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COPPER

DEFICIENCY

IN

INFANCY

Angel Cordano, M.D., Juan M.

Baertl,

M.D., and George G. Graham, M.D.

Departtnent of

Research,

British American Hospital, Lima, Peru, and Pan American Health Organization

(Submitted December 23, 1963; accepted for publication May 7, 1964.)

This investigation was supported by grants Nos. AM-04635 and 05935 from the National Institutes

of Health, U. S. Public Health Service.

ADDRESS: (G.G.G.) British American Hospital, Apartado 2713, Lima. Peru.

PEDIATRICs, September 1964

324

-I_’

LETARY copper deficiency in animals

.LJ

and the role of Cu in erythropoesis

and bone metabolism have been

exten-sively 2 hi 1931 Josephs3

re-ported the probable existence of

simultane-ous Fe and Cu deficiencies in milk-fed

in-fants. Subsequently this was questioned

and modern textbooks state that dietary Cu

deficiency has never been documented in

humans.

A series

of

reports

exist

of

in-fants with anemia, hypoproteinemia,

hypo-ferremia, and hypocupremia which were

felt to be of dietary origin.8#{176} Recent work

suggests that most of these belong in the

category of exudative enteropathy.h1

Cart-wright mentions two patients with

non-tropical sprue who had anemia and

hypo-cupremia, but he was not able to make a

proper therapeutic trial.12

We have observed 4 infants, recovering

from marasmus on exclusive milk diets,

de-velop Cu deficiency, with many of the

characteristics of that produced

experi-mentally in pigs.13 It is probable that they

had long-standing intestinal losses due to

chronic diarrhea and intestinal

malabsorp-tion as well as poor intakes and that, when

growth was rapidly accelerated on a diet

of low Cu content, they developed overt

signs of deficiency.

Case 1

AC. is a mestizo male, born at term, weight

unknown, who was breast fed for 15 days and

then supposedly given evaporated cow’s milk until

1 month of age, when he developed vomiting and

diarrhea, was given acid skim milk and then again

evaporated milk, in very small quantities. At 7

months he started to receive broth and occasional

small amounts of potato and squash. Diarrhea was

almost continuously present from age 1 month,

anorexia from 6 months. At age 8 months, two

days prior to admission, he became obviously

fe-brile and vomited all feedings; the following day

he developed severe diarrhea and was noted to

be flaccid and stuporous. He was severely

under-nourished, subcutaneous fat almost absent, muscle

mass much decreased, and there were signs of

dehydration with decreased muscle tone and deep

tendon reflexes. Weight was 4.780 kg, length 62.3

cm. Shortly after admission flaccid paralysis of

the left leg and some of the back muscles was

noted; the subsequent course suggested that this acute illness was poliomyelitis. On the 171st

hos-pital day, he suffered a pathological fracture of

the right femur.

DuET: By the 3rd day he tolerated modified cow’s milk and by the 5th was getting 2 gm protein and

75 calories per kilogram of body weight per day

(cal/kg/day) from this preparation.#{176} For 6 months

protein intake was maintained at the same level,

recalculated daily. By the 11th day caloric intake

was increased to 100/kg/day by adding cane

sugar and cottonseed out to the milk and by the

47th day to 175 cal/kg/day. On the 99th day it

was reduced to 150 and on the 121st to 125/kg/

day. On the 182nd day protein intake was

in-creased to 3 gm/kg/day, keeping caloric intake

at 125/kg/day.

Although the milk contained added Fe, the

relatively small amounts given yielded only 1.4

mg elemental Fe and 28 tg Cu/kg/day during

the first 182 days and 2.1 mg Fe and 42 tsg Cu/ kg/day thereafter. An additional 90 mg Fe/days were given from the 17th to the 49th day, when

it was decreased to 45 and on the 199th day to

15 mg/day. On that day and the next he was

given 50 mg Fe intramuscularly. On the 207th

day he was started on 10 drops daily of 1% CuSO4

solution yielding 2.5 mg Cu/day, which added to

Similac with Iron, supplied by Ross Labora-tories, Columbus, Ohio.

I

Supplied by Anderson, Clayton & Co., Lima, Peru.

t

Fer-in-sol, supplied by Mead Johnson

In-ternational, Evansville, Indiana.

Imferon, supplied by Fisons Overseas, Ltd.,

(2)

ARTICLES

325

the amount in the milk gave a total of 362 pig!

kg/day. On the 216th day it was decreased to 104

and on the 225th it was increased to 167 g/k

day.

During 103 days, he received only the vitamins

in the milk, which in the amounts used should

yield 25 to 30 mg of vitamin C, 1,300 units of

vitamin A, 220 units of vitamin D, 0.35 mg of

vitamin B1 and 0.55 mg of riboflavin daily. On

the 103rd day a supplement of 50 mg/day of

ascorbic acid was added. On the 109th day this

was replaced by 1.2 ml of a multivitamin prepar-ation,#{176}0.6 ml of which yield 50 mg ascorbic acid,

5,000 U vitamin A, 1,000 U vitamin D, 1.0 mg

thiamine HC1, 1.2 mg riboflavin, 1.0 mg

pyridox-me HCI, 5 mg pantothenic acid, and 10 mg of

nicotinamide. On the 127th day this supplement

was halved. From the 168th to the 177th day he

was given 50 mg/day of ascorbic acid

intramuscu-laxly. On the 141st day 10 mg/day of folic acidf

were added and on the 162nd day this was

re-duced to 5 mg daily.

LABORATORY STUDIES (Fig. 1): Body weight,

polymorphonuclear (PMN) count, hematocrit (Hct),

reticulocytes (Ret), and pertinent hematinic treat-ment have been plotted against age and hospital

days. On the 45th day PMN count had dropped to

350/mm3 and total white blood cell (WBC) count was 5,050/mm3. During the next 168 days WBC

varied between 3,500 and 5,150 and PMN

be-tween 70 and 650/mm3, with the exception of a

single determination on the 193rd day of 6,500

WBC and 2,665 PMN associated with an acute

infection. On the 213th day, 6 days after

supple-mental Cu was started, WBC rose to 6,300 and

PMN to 900 (17%); thereafter there was a rapid

rise to normal values of more than 6,000 WBC’s

and 2,000 PMN’s/mm. On the 222nd day, 5 days

after decreasing the intake of Cu, WBC was 5,600

with 30% PMN (1,680/mm3); on the 225th day,

6,000 with 12% PMN (720) and on the 228th day,

4,500 with 10% PMN (450). On the 232nd day,

7 days after doubling the supplemental Cu, WBC

rose to 5,800 with 34% PMN (1,970/mm3) and

thereafter remained at normal levels.

On admission, Hct was 36% and Hgb 10.65 gm %. On the 85th day they started to drop rapidly

to low values of 16% and 4.75 gm by the 117th

day, 14 days after increasing the intake of

as-corbic acid and 8 days after adding the

multi-vitamin preparation, from which point they rose

slowly to a value of 20% and 6.5 gm on the 140th

day. After the addition of folic acid, Hct and

Hgb rose steadily to 30% and 8.91 gm on the

163rd to again fall slowly to 21% and 7.0 gm on

#{176}Abdecol, supplied by Parke, Davis & Co., Lima, Peru.

f

Folvite, supplied by Lederle Laboratories,

Pearl River, N.Y.

A#{149}g#{149}

:

PMN1O3

Hct. 1.

Ret.’!. -

-100

Fe mg .

CUPWk

_________________________

9- 0 -.-.-.-.-.-m1/fI/III/I/A

Vit.Crng.125T

rA.mg. 10T

,,,,-Agemonths

?

, 1 ,

9

1 Hosp- days 0 60 120 180 240

FIG. 1 (Case 1). Evolution of body weight (Wt),

polymorphonuclear neutrophils (PMN), hematocrit (Hct), and reticulocytes (Ret) during recovery from

marasmus on a high-calorie, low-copper diet.

In-take of iron (Fe) in mg/day, copper (Cu) in jsg/

kg/day, vitamin C in mg/day and folic acid (F.A.)

in mg/day are also shown in relation to the

chronologic age in months and the number of days after admission.

the 207th day, when Cu supplementation was

started. In the next 13 days they rose to 33% and

10 gm and from that day until the 262nd were

never below 33% and 10.0 gm or above 35% and

11.0 gm. He was then changed to a mixed diet

and Hct and Hgb rose further to stable values of

38% and 12 gm. At its lowest on the 120th day

the red blood cell (RBC) count was 1.34 million/

mm3; on the 140th day it had risen to 2.14

mil-lion. Following treatment with folic acid it rose

to over 3 million but by the 207th day had again

fallen to 2.67 million. Fifteen days after Cu was started it had risen to 4.0 million.

Microscopic examination of the blood for 103

days showed slight hypochromia and anisocytosis.

Thirteen days after increasing ascorbic acid

in-take, there was no hypochromia, some

macrocyto-sis, and moderate anisocytosis. Immediately

(3)

poly-chromatophilia; 49 days later there was very slight hypochromia and anisocytosis. Nine days

after the addition of Cu, there was very slight

hypochromia and anisocytosis; 6 days later the

smear was normal. Platelets were adequate at all

times.

Reticulocytes were below 1.4% until 5 days

after ascorbic acid was increased to 75 mg/day, when there was a rise to 3.9%. Two days after folic

acid was first given they again rose to 4.1% and

stayed near that level for about 1 week, then fell

below 1% until 3 days after Cu was started, when

they rose to 2.1%. On the 213th day they were

4.9% and on the 217th day, 4.2%. After this they fell to less than 0.5%.

Biopsy of bone marrow on the 116th day

re-vealed some diminution of erythroid elements,

conservation of normal maturation proportions and

a preponderance of orthochromatic normoblasts

over more juvenile elements. The granulocytic

series revealed a quantitative diminution of its

elements with a predominance of mature

ele-ments; there was an increase in the proportion of

lymphocytes. Repeat biopsy on the 247th day

(40 days after Cu was given) revealed marked

regenerative hyperplasia. Red cells had elements in all stages of development, with a preponderance of orthochromatic normoblasts. The myeloid series, equally hyperplastic, had a preponderance of meta-myelocytes and non-segmented neutrophils.

Mega-karyocytes were normal.

On the 207th day serum Cu was 68 pig/100

ml; on the 288th day it was 168 g/100 mi.#{176}

BONE: Radiologic appearance was normal until

the 161st day when widening and irregularity of

the left distal ulnar metaphysis were noted, with bony spurs on the medial and lateral aspects (Fig.

2a). The right wrist was similar. The knees

re-vealed loss of density and pattern of the

can-cellous bone of the femora and tibiae, with a

“ground-glass” appearance. The cortex of the

epiph-yses was very thin and more obvious than

usual, giving a ring-like appearance. On the 171st

day x-ray of the right femur (Fig. 2b) revealed

an incomplete anterior fracture 1 cm above the

distal metaphysis. Three bony spurs were also

noted on the posterior aspect of the femoral

me-taphysis. The left wrist on the 193rd day showed

widening of the ulnar metaphysis due to the

ex-ternal spur, persistent irregularity, and also loss of density in the medial aspect of the radial

me-taphysis. The right femur and knee on the 203rd day (Fig. 2c) revealed consolidation of the fracture

with hard callus and periosteal reaction extending

#{176}Serum copper determinations were kindly

per-formed by Miss Louise Gray, U.S. Plant, Soil and

Animal Nutrition Laboratories, Ithaca, N.Y.

Av-erage normal adult values in her laboratory are

109 ± 17 pig/100 ml.

to the mid-shaft. On the 215th, 8 days after Cu was begun, there was increased density and osse-ous trabeculation in the femoral epiphysis. On the

218th (Fig. 2d) there was bony union between

the ulnar metaphysis and the spur. Irregularity of

the ulnar metaphysis and loss of density of the

radial metaphysis persisted. On the 245th the

ossification centers of the knee were much more

clearly delineated, the fracture better consolidated

and there was some degree of osteoscierosis of

the metaphysis and neighboring areas of the

diaph-ysis of the left femur. Both tibiae revealed

growth arrest lines. The ulnar metaphysis lacked

lineal demarcation and had a hazy appearance.

On the 274th day there were no structural or

morphologic alterations of either knee.

SUMMARY: A.C. was rehabilitated on a diet of

milk with added sugar and oil. For the first 182

days this yielded 28 g and for the next 25 days,

42 g Cu/kg/day. Weight gain was satisfactory

and in accord with his caloric intake.14

By the 45th day moderate leukopenia, with

marked neutropenia, was evident and persisted

until the 213th day with the exception of one

brief neutrophilic response to an active infection. Six days after dietary Cu was raised to 362 pig/kg/

day there was evident a rapid increase in

neu-trophils. When this was reduced to 104 pig there

was a drop in neutrophils and when it was raised

to 167 g, they again increased to normal values.

The bone marrow changed from moderate

ma-turation arrest and hypoplasia to pronounced hy-perplasia.

Despite early administration of Fe, after the

85th day a severe, predominantly normocytic and

normochromic anemia developed. There was a

fair reticulocytic and hematologic response to

as-corbic acid and a further, incomplete response

to folic acid. When Cu intake was increased,

there was a prompt but moderate reticulocyte response and a rapid climb to nearly normal values

in Hgb, Hct, and RBC. When he was given a full

diet there was a further increase.

Five months after admission marked osteoporosis

of bone and changes reminiscent of scurvy

be-came apparent by x-ray. Shortly thereafter he

suffered a pathological fracture which healed with callus formation. Promptly after the administration of Cu, increased density of bone and healing of

the abnormal changes became evident. During

the period of Cu deficiency there was practically

no advance in radiologic “bone age”; after treat-ment there was a rapid advance.

Case 2

M.M. is a mestizo female, one of twins, who

was breast fed for a few days and then changed

to very dilute evaporated milk. At 6 months she

started to receive clear broth and occasional

(4)

a

b

fs

‘9

d

r

1

FR;. 2 (Case 1). (a) X-ray’ of left wrist 161 (lays after admission showing widening and irregularity of the ulnar motaphysis with bony spurs on the medial and lateral aspects. (b) X-ray of the right knee 171

days after admission showing incomplete fracture above the distal femoral metaphvsis as well as bony spurs on its posterior aspect. Also “ground-glass” appearanCe of long bones and “ring-like” epiphyses. (c) Right knee on the 203rd day shows consolidation of fracture with hard callus and periosteal reaction;

no change in the epiphyses. (d) Left wrist on 218th day reveals marked improvement.

hospital with a weight of 3 kg, after a 3-week

history of diarrhea and vomiting. She was given

acid whole milk with added casein, FeSO,, and

multivitamins. She had positive Kahn and

Maz-zini reactions; x-ravs of the long bones were

re-portedlv normal. She reached 4.75 kg by the time

she was transferred to our hospital.

On admission, age 14h months, she was alert,

had a protuberant abdomen, could not sit, and was grossly undernourished, with very scanty sub-cutaneous fat and muscle mass. She developed gradually increasing pallor and some increased pigmentation and roughness of the skin overlying

the malar areas of the face. On the 124th hospital day she received a transfusion of 120 ml of

whole blood. Because her serological tests for

syphilis were positive on admission, she was given penicillin for 9 days. Because of a positive

tuber-culin test and x-ray evidence of primary

pulmo-nary tuberculosis she was given isoniazid, 75 mg/

day orally, from the 6th to the 89th day, when it was discontinued because of unexplained low-grade fever and progressive anemia.

DIET: On admission she was placed on modified

cow’s milk yielding 2 gm protein and 75 cal!

(5)

4+

PMN.103

2-caloric intake was gradually raised to 175 cal/

kg/day by the 38th day. On the 73rd day it was

reduced to 150 cal/kg/day. Protein intake

re-mained at 2 gm/kg/day until the 123rd day when

it was increased to 3 gm by the addition of

casein.#{176} On the 141st day the caloric intake was

reduced to 100 cal/kg/day. On the 190th day it

was raised to 125 cal/kg/day and maintained at

this level, with 3 gui protein/kg/day, until the

289th day (age 2 yr) when she weighed 8.54 kg

and had a length of 70 cm.

She received an estimated 1.4 mg Fe and 28

g Cu/kg/day from the milk. On the 50th day

90 mg/day of Fe were added; on the 64th day

this was reduced to 45 mg/day. On the 214th day

she received 40 mg and on the 215th, 50 mg of

Fe intramuscularly. On the 229th day a daily

sup-plement of 2.4 mg Cu was started, bringing her

intake to 378 jig/kg/day. Ten days later it was

reduced to 168 pig/kg/day.

Until the 94th day she received the vitamins

present in the milk (cf. Case 1). She was then

given 25 mg/day of pyridoxine HC1 for 10 days,

100 mg/day for 12 days and 20 mg/day for 27

days. On the 108th day she was started on 10

mg/day of folic acid, on the 142nd it was

de-creased to 5, on the 181st to 2.5 and on the 279th to 0.3 mg/day. After the 117th day she received 75 mg or more of ascorbic acid daily.

LBORATORY Snmis (Fig. 3): By the 94th

day, PMN’s had dropped to 376/mm3 and until

the 229th day, when Cu was started, varied

be-tween 43 and 675/mm3. On the 232nd day there

were 448/mm3 (7% of 6,400); on the 235th there were 2,263/mm3 (31% of 7,300). After that, PMN’s

were never below 1,728/mm3 and WBC’s never below 6,000/mm3.

On admission, Hct was 32% and Hgb 9.6 gm;

rose to 38 and 10.65 on the 27th; 34 and 9.6 on

the 64th and then dropped to 12% and 3.48 gin by the 12.4th day, when a transfusion was given. The

following day they were 27% and 7.94 gin; rose to

30% and 9.6 gin in a few days, and then fell slowly to 20% and 7 gin by the 228th day. Seven days after Cu was started, they had risen to 32.5% and 9.0 gm

and then remained between 31 and 10.0 and 35%

and 11.0 gin. On a varied diet, Hct was between

35 and 37%. At its lowest, on the 124th day, RBC

was 1 million/mm. Ten days after transfusion it

was 3 million, but by the 228th day had fallen to

2.2 million. On the 3rd day of Cu supplementation,

it was 2.5 million; in another 3 days it was 2.7 mil-lion and in another 5 days, 3.3 million. It then rose gradually to approximately 4 million.

Blood smear was normal the 72nd day, when

moderate hypochromia and anisocytosis were

evi-dent. From the 106th to the 123rd days

anisocy-o Casec, supplied by Mead Johnson

Interna-tional, Evansville, Indiana.

::. ‘:i

Hct- ‘I.

Ret.’!.

Fe mg -

‘F

277M77777I h72772____]

300

Cu,isqfkg .

Vit.Cmg. ‘25T

F.A.mg. 10T 77fl)rmv,- 1

Agemonths p1.5 , 17 1 21 2,3

Hosp. dzys 50 110 170 230 290

Fic. 3 (Case 2). Evolution of body weight (Wt),

polymorphonuclears (PMN), hematocrit (Hct) and reticulocytes (Ret)) during recovery from marasmus on a high-calorie, low-copper diet. Intake of iron

(Fe) in mg/kg/day, copper (Cu) in pig/kg/day,

vitamin C in mg/day and folic acid (F.A.) in

mg/day are also shown in relation to age in

months and hospital days. The arrow indicates

transfusion of 120 ml of blood.

tosis became more marked and there was moderate

macrocytosis; hypochromia became severe. After

transfusion red cells were normal until the 204th

day, when there was moderate hypochromia and

some anisocytosis. On the 232nd day there was

pronounced hypochromia, some

polychromato-philia, and moderate anisocytosis and macrocyto-sis, this last probably related to reticulocytosis. Five days later there was only slight anisocytosis and thereafter there were no abnormalities. Plate-lets were adequate at all times.

Reticulocytes were below 1.3% until the 232nd

day, 3 days after Cu was started, when they rose

to 3.9%, with 7% nucleated RBC’s. On day 235

reticulocytes were 6.2%, nucleated RBC 3%.

Bone marrow on the 94th day revealed

eryth-roid hypoplasia with questionable early megalo.. blastic changes and some cytoplasmic vacuolation, maturation arrest of the myeloid series with some

giant metamyelocytes and marked lymphocytic

(6)

re-ARTICLES

vealed a normal myeloid series and some

eryth-roid hyperplasia. On the 260th day, 31 days

after Cu was begun, there was marked

hyper-plasia, particularly myeloid, with cells in all stages

of maturation, predominantly PMN’s; slight

in-crease in eosinophilic PMN’s, and normal

mega-karyocytes. Erythroid elements were hyperplastic,

with a predominance of orthochromatic

normo-blasts.

On the 95th day serum Cu was 119 pig/100

ml; on the 222nd day it was 72 ig/100 ml; on

the 296th day it was 170 pig/100 ml.

BONE: The day after admission x-rays revealed,

in the right tibia, hyperostoses, particularly on the internal surface of the diaphysis, as well as small, rounded, osteolytic images in its proximal third.

There was another elongated osteolytic image on

the external border of the previously mentioned

area of hyperostoses. These findings were felt to

be due to congenital lues. On the 178th day

there was osteoporosis and ring-like distal femoral epiphyses as well as several lines of growth arrest.

On the 204th day there was irregularity of the

left distal metaphysis. On the 233rd day there

was very slight irregularity within the radial

metaphysis and a normal ulnar metaphysis and

ulnar and radial diaphyses. On the 241st day

there was bony trabeculation apparent within the

femoral epiphysis but its density was still

sub-normal. On the 260th day the bony density and

pattern of the femoral epiphyses, ulnar and radial metaphyses were normal.

SUMMARY: M.M. was rehabilitated on a diet of

milk with sugar and oil which yielded 28 g of

Cu/kg/day. Gain in weight was satisfactory and

gain in length was slow. Marked neutropenia and

severe anemia developed by the 94th day.

Trans-fusion on the 124th day temporarily corrected

the anemia but not the neutropenia. Iron,

pyri-doxine, folic acid, ascorbic acid, and a

multivita-mm preparation were of no benefit; increasing

the Cu intake to 378 pig/kg/day produced a

prompt and dramatic response in neutrophils and

erythrocytes. Bone changes were present by the

178th day and returned to normal within 31 days

after Cu supplementation.

Case 3

CM. is the twin of Case 2, with identical past

and feeding histories. When admitted to another

hospital at the age of 12% months she weighed

3.625 kg. She also received acid whole milk and

1 month later weighed 4.24 kg. Her serological

tests for syphilis were positive.

At the time of transfer, at age 14% months, she weighed 4.34 kg and was 60 cm long. Her clinical

conditions and course were similar to those of

her twin, including pallor and brawny

pigmenta-tion of the skin and low-grade fever from the

86th to the 289th days. She did not receive a

blood transfusion. She was treated with penicillin for 9 days because of positive serological tests for

syphilis and with isoniazid, 75 mg/day orally,

from the 5th to the 89th hospital days.

DWT: She was given modified cow’s milk

yield-ing 2 gin protein and 75 cal/kg/day. On the 5th

day the caloric intake was raised to 100, and by

the 38th day to 175 cal/kg/day. On the 129th

day it was reduced to 150/kg/day and the protein

intake raised to 3 gm/kg/day by the addition

of casein. On the 141st day calories were reduced

to 100/kg/day protein intake remaining at 3

gm/kg/day. On the 158th the caloric intake was

increased to 125 and on the 190th day to 150

cal/kg/day. On the 258th day it was reduced to

125 cal/kg/day. On the 289th day, at age 2 years,

she weighed 9.86 kg and had a length of 70.5 cm.

Until the 289th day she received no more than

1.4 mg of Fe and 28 pig Cu/kg/day from the

milk. On the 41st day an additional 90 mg/day of Fe were added; on the 79th day this was reduced

to 45 and on the 214th to 15 mg/day. On the

115th day she received 100 mg of Fe

intramus-cularly. On the 214th, 215th, and 216th days she

received 25, 25, and 50 mg of Fe intramuscularly.

From the 263rd to the 272nd days she received

a daily supplement of 2.5 mg Cu, bringing her

intake to just over 300 pig/kg/day. On the 273rd

day this was reduced to 135 pig/kg/day.

For 94 days she received only the vitamins in

the milk (cf. Cases 1 and 2). She was then given

25 mg pyridoxine HC1 daily for 14 days, then

20 mg/day for 47 days. On the 124th day she

was started on a daily supplement of 1.2 ml of

the same multivitamins used in the other cases,

raising intake of ascorbic acid from 25 to 125

mg/day. On the 142nd day it was reduced to

0.6 nil/day. From the 173rd to the 177th day she

received daily intramuscularly 1 ml of a

multi-vitamin preparation containing 5 pig of

cyano-cobalamin and 100 mg ascorbic acid. On the

156th day she started receiving 10 mg/day of

folk acid; on the 177th day this was reduced to

5 mg/day. From the 229th to the 233rd days she

received 50 pig/day of vitamin B12 intramuscularly. LABORATORY STUDIES (Fig. 4): By the 94th day,

PMN’s had dropped to 960/mm3 and by the 115th

to 275. Thereafter they varied between 157 and

546 until the 239th day. There was one isolated

rise to 7,500 WBC, with 10% PMN, on the 193rd

day, associated with a mild diarrheal episode. On

the 239th day, 5 days after completing the 5-day

course of B12, PMN’s rose to 600 (17% of 3,500); on the 2,46th day to 650; on the 251st to 728;

on the 257th to 1,155 and on the 263rd day to

1,350/mm3 (27% of 5,000). On the 267th day,

4 days after beginning Cu, there was a spurt to

2,016 PMN’s, and thereafter a prompt rise to

normal values: 40 to 50% of 6 to 7,000 WBC’s.

(7)

Cu 1lkg.

j

125

Vit.Cmg. 0

some macrocytosis possibly due to reticulocytosis;

after the 173rd day slight hypochromia, marked

anisocytosis, some macrocytosis, and discreet poi-kiocytosis; on the 187th day slight hypochromia, moderate anisocytosis, and slight poikilocytosis.

The morphology then remained unchanged until

the 242nd day when it was judged normal.

Plate-lets were adequate.

Reticulocytes were below 1.2% until the 134th

day, 10 days after being started on multivitamins, when there was a rise to 3.3%, sustained between

1.6 and 4.7% until the 193rd day. There was a

very slight rise from 1.3 to 2.2% when B12 was

given. After Cu, reticulocytes remained above 1%

for 11 days and then dropped to 0.5% or less.

Bone marrow on the 94th day showed

matura-_______________________________ tion arrest of the myeloid series, with marked

lymphocytic infiltration. The erythroid series was

.. . - --J quantitatively decreased, with cytoplasmic

vacuo-lation. The same marrow was interpreted by

an---

other observer as showing questionable early

megaloblastic changes. Bone marrow on the 108th

showed erythroid hyperplasia and little change in

myeloid elements. On the 135th day, 6 days after

increasing protein intake, the bone marrow was

_________________________________ hyperplastic, erythroblastic, with a preponderance

of orthochromatic normoblasts. The myeloid series _________________________________ was less cellular, with inversion of

myeloid/eryth-roid ration. There was a preponderance of

mye-locytes and to a lesser degree of metamyelocytes. Mature elements were scarce. Biopsy after B12 and before Cu revealed active production of cellular

elements in both series. The myeloid had cells in

all phases of development, with a preponderance

of immature myelocytes, suggesting maturation

arrest. On the 277th day, 14 days after beginning

of Cu, the bone marrow revealed marked

hyper-plasia, predominantly neutrophilic, with very large numbers of mature, segmented neutrophils.

On the 95th day serum Cu was 72 pig/100 ml;

on the 222nd day it was 69 pig/nil; on the 296th

day it was 160 pig/100 ml.

BONE: On the 172nd day, radiologic appearance

of the wrist (Fig. 5a) was normal. On the 206th

day there was some irregularity of the distal

borders of the radial and ulnar metaphyses, with

minimal spur formation. On the 242nd day (Fig.

Sb) there was widening, irregularity, and fraying of the distal metaphyseal border of the ulna, with

lateral bony spurs; also an irregular lineal shadow

of calcification 1 to 2 mm below the medial half of the radial metaphysis. On the 261st day (Fig. 5c) there was some haziness of the ulnar and radial

metaphyses and some filling in of the space

be-tween the irregular area of calcification and the distal metaphysis of the radius. Part of the bony spur on the lateral aspect of the ulnar metaphysis was still present. On the 292nd day there still was

some haziness of the ulnar metaphysis alone. On

the 303rd day (Fig. 5d) the bony density and

C.

M.

Wt. kg. 10

PMN,10’

‘I.

Ret. ‘I. ____.__

-lOOy

Fe mg. - t

FA.mg. 10i 977)

B’2’ig 50i - I _1

Age months 15 17 19 #{149}21

Hosp. days 0 50 110 170 230 29C

Fic. 4 (Case 3). Evolution of body weight (Wt),

polymorphonuclears (PMN), hematocrit (Hct), and

reticulocytes (Ret) during recovery from marasmus on a high-calorie, low-copper diet. Intake of iron

(Fe) in mg/day, copper (Cu) in pig/kg/day,

vita-mm C in mg/day, folic acid (F.A.) in mg/day and

vitamin B12 in pig/day are also shown in relation to age and hospital days.

on the 94th day, Hct fell to 27 and Hgb to 8.9

and then continued to fall steadily to a low of

14% and 4.5 gm on the 131st day, one week after the addition of multivitamins. From that point

they climbed slowly to 24% and 8.0 gm. Two days

after completing the 5 days of B12, Hct rose to

27 and Hgb to 8.6; then to 30% and 9.25 gm by

the 246th day; they remained near this level until

Cu supplementation after which they rose to

39% and 11.0 gm. RBC’s fell from 3.0 million to

1.45 million by the 134th day; rose slowly to

over 2.0 million by the 170th and to just under

3.0 million by the 233rd day. They then

in-creased to over 3.5 million after B12 and to 4.0 million after Cu.

Blood smear on admission was normal; by the

102nd day there was moderate hypochromia and

anisocytosis, some macrocytosis, and an occasional target cell; on the 118th day less hypochromia and

anisocytosis and fewer macrocytes; on the 134th

(8)

FIG. 5 (Case 3). (a) X-ray of the left wrist on the 172nd day was still essentially normal. (b) On the 242nd day there is definite widening, irregularity, fraying, and lateral bony spurs of the ulnar

metaph-ysis; also an irregular, lineal shadow of calcification just below the medial half of the radial metaphysis. (c) On the 261st day, one month after B12 treatment, there is still some haziness of the metaphyses.

(d) On the 303rd day, 2 weeks after Cu supplementation, the appearance is alniost normal.

structure of the ulnar and radial rnetaphyses were normal.

SUMMARY: CM. was rehabilitated on a diet

yielding no more than 28 g Cu/kg/day. Because

of intentionally planned additional caloric intake, she gained in weight and length at a faster rate than her twin. Marked neutropenia was evident by the 94th day and anemia became evident at the

same time, becoming most severe by the 131st day. There was an incomplete erythroid response, with reticulocytosis, to a multivitamin preparation, probably related to its ascorbic acid content. There was no clear response to folic acid and to small doses of B12. There was additional incomplete

erythroid response and fair myeloid response to

larger doses of B2, with little additional reticulocy-tosis.Cu produced a further erythroid and myeloid

response. Bone lesions became evident on the 206th day and improved with the B12 and Cu therapy.

Case

4

MG. is a mestizo male who weighed 2.3 kg at

birth and was breast fed for 2 months. At that age he started subsisting on rice water, oat water, and various herb teas. lie supposedly received 100 ml

(9)

2

0

“vomiting” until the age of 15 months, when he

was admitted because of undernutrition, weighing 3.24 kg and measuring 55.5 cm. He was not able to raise his head and sucked his hand continuously.

Physical examination revealed extreme

undemutri-tion and an increase in body hair but was other-wise unremarkable. His course was complicated by the fact that he was a classic “ruminator”; this was finally overcome after 3 months of consider-able personal attention. Pitting edema of the lower

extremities and hypoalbuminemia were apparent

from the 8th to the 63rd hospital days. He was

found to harbor giardia lamblia in the stool and

was treated with

chloro-methoxy-acridil-amino-diethyl-aminopropanol dichiorhydrate from the

42nd to the 46th days.

DIET: He received 2 gui protein/kg/day until

the 119th day, when it was raised to 3 gm/kg/day, all from the milk. Caloric intake was 50/kg/day until day 9; 75 kg/day until day 12; 100/kg/day

until the 26th day and 150/kg/day until the 83rd

day, when it was raised to 175/kg/day. On the

141st day it was decreased to 150 and on the 147th day to 125 cal/kg/day, at which level it remained

until the 222nd day, when he weighed 8.275 kg

and measured 64.5 cm.

For 118 days he received an estimated 1.4 mg

Fe and 28 g Cu/kg/day from the milk.

There-after he received approximately 2.1 mg Fe and 42

pig Cu/kg/day. From the 27th to the 179th days he received a supplement of 15 mg of Fe daily. On the 140th and again on the 141st days he received

50 mg of Fe intramuscularly. From the 189 to the

201st days Cu intake was 384 pig/kg/day and from the 202nd to the 222nd, 173 pig/kg/day.

For 64 days he received only the vitamins in the milk. He then received 0.6 ml daily of the same

multivitamins used in the previous 3 cases. From

the 65th to the 102nd days he received 10 mg a

day of folic acid and from the 103rd to the 222nd, 5 mg daily. From the 148th to the 152nd days he received 50 g daily of vitamin B intramuscu-larly.

LABORATORY STUDIES (Fig. 6): By the 75th day

PMN’s had dropped to 828/mm’ (18% of 4,600

WBC) and then remained between 45 and 440

until the 163rd day, 15 days after B12 was first

given, when they rose to 738. On the 166th day

they were 584; on the 169th, 1,428; on the 177th,

1,231; and on the 188th day, 1,743/nun’ (21% of

8,300). On the 191st day, 2 days after Cu was

started, they were 2,070 (30% of 6,900); on the

196th day, 3,108 (37% of 8,400); thereafter they

were always above 3,500/mm’.

During the first 60 days Hct was between 34

and 38% and Hgb above 10.0 gm. On the 65th day

Hct had fallen to 23%, Hgb to 7.32 gm. After folic

acid and the additional vitamins, Hct rose rapidly to 30% on the 69th day and then ranged between

28 and 30, with a Hgb of 8.91 until the 104th,

MG.

wt. kg.

PMNo1O3

Hct. ‘!.

Ret. ‘I.

F. mg

300

Cu Ag/kg. o L

Vi t. C mg.

FA.mg. T 777Th-J . I

B12g. 50T i

Age months 15 17 19 21 23

I- , , . I

Hosp.days 30 90 150 210

FIG. 6 (Case 4). Body weight (Wt),

polymorpho-nuclears (PMN), hematocrit (Hct), and

reticulo-cytes (Ret) during recovery from marasmus on a

high-calorie, low-copper diet. Daily intake of iron (Fe) in mg, copper (Cu) in pig/kg, vitamin C in

mg, folic acid (F.A.) in mg and vitamin B12 in

pig are also shown in relation to age and hospital

days.

when it fell to 26, reaching a low of 16% with a

Hgb of 5 gin on the 146th day. After the adminis-tration of 1312 they rose steadily to 34% and 10.0 gm.

After Cu was added, Hct ranged between 34 and

36% and Hgb rose to 11.0 gm. On a full diet, Hct

rose further to 40% and Hgb to 12.1 gm. RBC’s

were 2.4 million on the 64th day. With folic acid and multivitamins they rose to over 3.0 million on the 75th day, only to fall again to a low of 1.7 mil-lion on the 148th. After B12 they rose steadily to 3.5, and with the further addition of Cu, to be-tween 3.7 and 4.0 million.

Red blood cells revealed moderate hypochromia, slight anisocytosis and polychromatophilia by the

70th day. Four days later the appearance was

(10)

ARTICLES

333

after B12 was given, there was moderate anisocy-tosis, slight hypochromia, and discreet

polychroma-tophilia and macrocytosis. After this, there was

only slight anisocytosis; after Cu was given, the

morphology was normal. Platelets were always

ade-quate.

With the exception of a single value of 2.7% on the 54th day, reticulocytes were below 1.0% during the first 64 days; 2 days after folic acid was added

there was a rise to 2.5% on day 67, 3.2% on day

69, 4.3% on day 70 and 3.0% on day 75. Values

between 1.2 and 2.2% persisted until the 133rd day. After the administration of B2 there was a second sharp rise to 4.6% by the 161st day. They then

re-mained between 1 and 2% until 18 days after Cu

was started, when they fell to below 1% and

re-mained low.

Biopsy on admission revealed a hypoplastic bone

marrow with a relative scarcity of cellular

ele-ments. Myeloid elements were diminished and

pri-manly polymorphonuclear. The erythroid series

was markedly decreased with only occasional

ortho-chromatic normoblasts. Megakaryocytes were also decreased. On the 188th day, 23 days after B12 was

first given and immediately before Cu was

in-creased, the myeloid series had elements in all

stages of development, with a predominance of

immature cells, especially myelocytes, suggesting

some degree of maturation arrest. On the 203rd

day, 14 days after Cu was started, the bone

mar-row revealed marked hyperplasia, particularly of

the myeloid series, which was represented by huge numbers of mature PMN’s.

On the 148th day serum Cu was 43 pig/100 ml;

on the 222nd day, 183 pig/100 ml.

BONE: Radiologic appearance was normal until the 138th day, when there was some irregularity of

the distal ulnar metaphysis with a small lateral

bony spur and loss of density and pattern within

the distal femoral and proximal tibial epiphyses,

which had a “ring-like” appearance. Fifteen days

later there was little change. On the 159th day

there was evidence of bone formation between the

previously mentioned spur and the ulnar epiphysis. On the 188th day there was normal bone structure apparent within the femoral and tibial epiphyses as well as an increase in size.

SUMMARY: M.C. was rehabilitated on a diet

yielding 28 pig Cu/kg/day for 118 days and 42

pig/kg/day thereafter. Marked neutropenia became

evident on the 75th day, anemia by the 65th day,

and bone lesions by the 138th day. Folic acid and/

or ascorbic acid produced a good reticulocyte

re-sponse and a partial erythroid remission but had

no effect on the myeloid series. Vitamin B12

pro-duced a slow but almost complete erythroid and

myeloid response as well as healing of the bone

lesions. Supplemental Cu produced a total myeloid

remission and further increased the erythroid

re-sponse; it also led to progress in bone age.

COMMENT

These 4 cases had important features in

common; very short periods of breast

feed-ing followed by semi-starvation diets and

repeated episodes of diarrhea or vomiting.

In 3 of them, significant infections

pre-ceded admission. All were rehabilitated on

milk diets modified by the addition of fat

and carbohydrate which resulted in marked

acceleration of weight gain and thus

cre-ated a relative deficiency of nutrients which

would otherwise have been present in

ade-quate amounts in the milk used.

Fe deficiency was anticipated but they

developed severe anemia 64 to 108 days

after admission, which was hypochromic to

normochromic; microcytes were not

prom-inent, and minimal macrocytosis was

pres-ent in all. Cases 1 and 3 had reticulocyte

responses and temporary erythroid

remis-sions following increase in ascorbic acid

in-take. One of these (Case 1) had an

addi-tional, similar response to folic acid. Case

4 had a similar response but the ascorbic

acid and folic acid had been increased

al-most simultaneously; Case 2 had received

a previous blood transfusion and had no

response to either.

In Case 4 there was a short period of

hypoalbuminemia; serum proteins were

otherwise within normal limits.

All 4 had been receiving only 28 p.g

Cu/kg/day during most of their stay and

developed significantly low serum Cu

values. Two of them (1 and 4) received

42 g Cu/kg/day for brief periods after

the anemia had developed, but without any

noticeable improvement. Cases 1 and 2 had

prompt and dramatic erythroid responses

to supplemental Cu, going up to nearly

normal values in a few days. Cases 3 and 4

had slower but good responses to vitamin

B12, and then had further responses to Cu.

All had slight but additional further

re-sponses, particularly in 11gb, when given

varied diets, suggesting that perhaps some

other nutrient was deficient. Subsequent

experience with other infants has shown

that a complete mineral

mixture15

given

(11)

re-suits in normal values for Hct, 11gb, and

RBC, suggesting that the additionally

de-ficient nutrient was one of the minerals.

Perhaps the most striking finding was a

marked neutropenia, which became

ap-parent with, or even before, the anemia.

Cases 1 and 3 were able to respond with

moderate leucocytosis and some increase in

neutrophils to intercurrent infections. There

was no improvement in the neutropenia

from ascorbic or folic acid, and transfusion

in Case 2 also failed to produce any

im-provement. Cases 1 and 2 had prompt and

complete responses to Cu; in Case 1 it was

possible to produce a temporary

neutro-penic relapse by decreasing the Cu intake

prematurely. Cases 3 and 4 had much

slower but good responses to vitamin B22

and subsequent complete responses to Cu.

After B12 the myeloid elements in the bone

marrow were hyperplastic but

predom-inantly immature; after Cu was added,

ma-ture PMN’s were evident in enormous

amounts.

Experimental work in pigs12 has

charac-terized the anemia of Cu deficiency as due

to a limitation in the rate of synthesis of red

cells by the bone marrow in the face of a

significantly decreased survival time. The

very slight but persistent reticulocytosis

during the entire period of Cu deficiency

in all 4 cases argues for the same

mech-anism in man. The additional

reticulocyto-sis, but with only transient and incomplete

hematologic response which was obtained

in 3 cases with ascorbic and folic acids,

suggests that these agents favored the

pro-duction of red cells by the marrow without

prolonging their life span. On the basis of

its action on different stages of Cu

metab-olism, it is possible that ascorbic acid may

have some other mode of action.16 Only in

the work of Lahey et al.13 have we been

able to find evidence of significant

leuko-penia and particularly neutropenia in Cu

deficient animals. There is a report of

neu-tropenia as a complication of penicillamine

therapy in Wilson’s Disease17 but in none

of the supposed cases of Cu deficiency that

we have been able to find in the literature

has this manifestation been reported. Dr.

Harold E. Harrison has suggested to us

that the neutropenia of the cases of

hyper-glycinemia reported by Childs, Nyhan et

al.18 might be due to the ability of glycine

to chelate Cu.

The good, though incomplete, remissions

obtained in 2 of our cases with vitamin B,2

might be explained in a variety of ways:

1. Vitamin

B12

may have increased the

intestinal absorption cf Cu or mobilized it

from other sites. Unfortunately, we do not

have serum Cu values after B12 and before

Cu supplementation.

2. It may have further stimulated the

production of red cells and also of white

blood cells by the marrow. The

hyper-plastic response observed lends support to

this possibility.

3. It may have increased the life span

of red cells produced, and, if we assume

that the neutropenia is also the result of

decreased survival, it may also have

in-creased the life span of neutrophils.

On the basis of the skimpy evidence

available, we cannot say if any or all 3

of these mechanisms were operant. We are

not aware of any experimental work

relat-ing vitamin B12 to Cu metabolism.

Case 1 developed the most severe

osse-ous lesions, and although a pathological

fracture occurred, it healed with good

cal-lus formation. All developed, in varying

degrees, osteoporosis, metaphyseal

irregu-larity, and spur formation. These lesions

were suggestive of scurvy but gave no

clinical indication of their existence.

Strik-ing apparent retardation in bone ag&9 was

present in all cases (Fig.

7).

This is in

marked contrast to the normal maturation

of bone reported in Cu-deficient dogs.2#{176}

In the first 2 there was prompt

improve-ment in the appearance of bone after Cu

supplementation. In the last 2, after B12

administration there was definite

improve-ment which continued after the addition of

Cu. Advance in radiologic bone age was

more prompt in the first 2 and quite slow

in the 4th case. These lesions are not

un-like those reported in dogs20 and pigs2’ who

were made Cu deficient.

(12)

exam-Is

15

12

E

Ld9 0 4

‘Ii

z 6

0

03

3

o--o

pies of growth “imbalance”-Cu deficiency

resulting from growth acceleration

pro-duced by a high-calorie, low-Cu intake in

infants whose stores were probably low.

We can only speculate as to the possible

role of isoniazid in Cases 2 and 3, as this

product has Cu-binding properties.22

Bush4 suggested that the human infant’s

Cu requirement was on the order of 80

g/kg/day, but Wilson and Lahey23

thought that it might be as low as 15

g/kg/day, as at this level they were

un-able, in 60 days, to produce any indication

of Cu deficiency in premature infants. It

must be remembered, however, that the

newborn has very ample stores in the liver

and that this length of time was probably

not enough to deplete them, particularly at

an age when utilization is probably very

low, despite the lower liver Cu stores of the

premature. Our cases, assuming that their

stores were low because of poor intake and

chronic intestinal losses, took 64 to 108 days

to show clear signs of deficiency. The fact

that 28 were not enough to prevent

de-ficiency and that 42 tg/kg/day produced

no improvement, suggests that their

mini-mum daily requirement was above this

second figure. In Case 1, 362 tg/kg/day

produced a prompt remission, but after 10

days on this dose, 104 tg/kday were

in-adequate and 167 &g/kday were

ade-quate to maintain it.

In Case 2, 158 .g, in Case 3, 135 tg, and

in Case 4, 173 tg/kg/day were adequate to

maintain remission. Consequently, we

might assume that the minimal daily

re-quirement for a rapidly growing infant

with inadequate stores is over 42 but below

135 pg/kg/day. This is in striking accord

with the requirements for pigs estimated by

Teague and Carpenter2’ of 77 to 110 g/kg.

The diet on which Cu deficiency was

in-advertently produced in these 4 infants is

not likely to occur by chance in everyday

practice and was probably complicated by

marginal or deficient intakes of other

nu-trients. We have, however, seen

hypocu-premia and the same hematologic picture

develop and respond promptly to Cu in one

other infant receiving the same diet

supple-‘3

2p/

,...‘,

I

I

I

1.1

74

/p/.,_.

:

r

..P-;g::,:::g

I

8i1i0’

9 12 15 15 21 26 27

AGE mos.

Fic. 7. Relation of radiologic bone age in months to chronologic age in 4 cases of marasmus recover-ing on a high-calorie, low-copper diet. The arrows indicate the beginning of copper supplementation.

Case 3 shows rapid advancement in bone age

be-fore copper, possibly under the influence of

vita-mm B12.

mented with folic and ascorbic acids.

In-fants receiving high caloric intakes often

have undiluted milk as the sole food and

probably receive barely adequate amounts

of Cu. The commonly used supplements to

the diet of infants, such as cereals, fruits,

and vegetables supply ample Cu. Also, the

commonly used utensils probably

contami-nate food with sufficient Cu. In our kitchen

the diets were mixed in glass containers

and placed in plastic nursing bottles,#{176} thus

inadvertently decreasing the possibility of

contamination with Cu. The casein added

to the diets of Cases 2 and 3 contains only

2 ppm of Cu and the amounts in the cane

sugar and oil are probably negligible. We

would agree with the contention that Cu

deficiency cannot occur with any frequency

in human beings. It must, however, be

taken into account in milk-fed infants who

become anemic, particularly if they have a

history of increased stool losses and

de-creased absorption.

SUMMARY

In four severely malnourished infants

who were rehabilitated on high-calorie,

(13)

low-Cu diets, we have observed the

ap-pearance of severe anemia, marked

neutro-penia, scurvy-like bone changes, and

hypo-cupremia. In 2 cases there was a prompt

and dramatic response to Cu

supplementa-tion. In the other 2, slower but good

re-sponses were obtained with vitamin B,,;

supplemental Cu produced further

re-sponses. The Cu requirement of rapidly

growing infants with poor stores is

esti-mated at between 42 and 135 tg/kg/day.

REFERENCES

1. Marston, H. R. : Cobalt, copper and

molyb-denum in the nutrition of animals and

plants. Physiol. Rev., 32:66, 1952.

2. Scheinberg, I. H. : Copper metabolism, a

re-view. In Wilson’s Disease, Some Current

Concepts. Edited by Walshe, J. M., and

Cummings, J. N. Oxford: Blackwell, 1961,

pp. 4-17.

3. Josephs, H. W.: Treatment of anemia in

in-fants with iron and copper. Bull. Johns Hop-kins Hosp., 49:246, 1931.

4. Bush, J. A.: The role of trace elements in

hemopoesis and in the therapy of anemia.

PsauAmIcs, 17:586, 1956.

5. Moore, C. V.: The essential trace elements. In

Clinical Nutrition. Edited by Jolliffe, N.;

2nd ed. New York: Hoeber-Harper, 1962,

p. 349.

6. Wintrobe, ‘M. M.: Clinical Hematology. 5th

ed. Philadelphia: Lea & Febiger, 1961, p. 141.

7. Smith, C. H.: Blood Disease of Infancy and

Childhood. St. Louis: Mosby, 1980, p. 169.

8. Lahey, M. E., and Schubert, W. K.: New

de-ficiency syndrome occurring in infancy.

J. Dis. Child., 93:31, 1957.

9. Sturgeon, P., and Brubaker, C.: Copper de-ficiency in infants; a syndrome characterized

by hypocupremia, iron deficiency anemia,

and hypoproteinemia. Amer. J. Dis. Child., 92:154, 1956.

10. Ulstrom, R. A., Smith, N. J., and Heimlich, E. M.: Transient dysproteinemia in infants,

a new syndrome; clinical studies. Amer. J.

Dis. Child., 92:219, 1956.

11. Gordon, R. S., Jr. : Exudative enteropathy. Lan-cet, 1 :325, 1959.

12. Cartwright, G. E. : The relationship of copper,

cobalt and other trace elements to

hemo-poesis. Amer. J. Clin. Nutr., 3: 11, 1955.

13. Lahey, M. E., Gubler, C. J., Chase, M. S.,

Cartwright, G. E., and Wintrobe, M. M..:

Studies on copper metabolism. II. Hemato-logic manifestations of copper deficiency in swine. Blood, 7:1053, 1952.

14. Graham, G. C., Cordano, A., and Baertl, J. M.:

Studies in infantile malnutrition. 2. The

effect of protein and calorie intake on weight gain. J. Nutr., 81:249, 1963.

15. Snyderman, S. E., Holt, L. E., Jr., Dancis, J.,

Roitman, E., Boyer, A., and Balis M. E.:

“Unessential” nitrogen: a limiting factor for human growth. J. Nutr., 78:57, 1962.

16. Scheinberg, I. H., and Morell, A. G. : Exchange

of ceruloplasmin copper with ionic Cu

with reference to Wilson’s Disease. J. Clin.

Invest., 36:1193, 1957.

17. Walshe, J. M.: Current views on the patho-genesis and treatment of Wilson’s Disease. Arch. Intern. Med., 103:155, 1959.

18. Childs, B., Nyhan, W. L., Borden, M., Bard, L., and Cooke, R. E. : Idiopathic hyperglyci-nemia and hyperglycinuria : A new disorder of amino acid metabolism. PEDlAmics, 27:

522, 1961.

19. Greulich, W. W., and Pyle, S. I.: Radiographic

Atlas of Skeletal Development of the Hand

and Wrist. 2nd ed. Stanford: Stanford Univ. Press, 1959.

20. Baxter, J. H., and Van Wyk, J. J.: A bone dis-order associated with copper deficiency. I.

Gross morphological, roentgenological and

chemical observations. Bull. Johns Hopkins

Hosp., 93:1, 1953.

21. Teague, H. S., and Carpenter, L. E.: The

dem-onstration of a copper deficiency in young

growing swine. J. Nutr., 43:389, 1951.

22. Weinberg, E. D.: The relationship of metal.

binding to antimicrobian action. In

Metal-Binding in Medicine. Edited by Seven,

M. J. Philadelphia: Lippincott, 1960, p.

329.

(14)

1964;34;324

Pediatrics

Angel Cordano, Juan M. Baertl and George G. Graham

COPPER DEFICIENCY IN INFANCY

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1964;34;324

Pediatrics

Angel Cordano, Juan M. Baertl and George G. Graham

COPPER DEFICIENCY IN INFANCY

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