THE CYCLIC AMP SYSTEM
Reduced sensitivity of the hepatic adenylate cyclase cyclic AMP system to glucagon during sustained hormonal stimulation
... of cyclic AMP (cAMP) content has been described in a number of ...cAMP system, since other parameters of glucagon action did not wane with ...
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Exposure of thyroid slices to thyroid stimulating hormone induces refractoriness of the cyclic AMP system to subsequent hormone stimulation
... incubated for 20 min with 10 mM theophylline and with or without TSH. Cylic AMP was measured after the third incubation. Phosphodiesterase and adenylate cylase were assayed in homogenates prepared from slices ...
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Cyclic-AMP and bacterial cyclic-AMP receptor proteins revisited: adaptation for different ecological niches.
... coli cyclic-AMP receptor protein (CRP) represents one of the paradigms of bacterial gene ...the cyclic-AMP-CRP regulatory system has been adapted to respond to distinct external and ...
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Chemotactic responses of Dictyostelium discoideum amoebae to a cyclic AMP concentration gradient: evidence to support a spatial mechanism for sensing cyclic AMP
... a cyclic AMP (cAMP) concentration gradient were examined using a novel assay ...this system, a cAMP concentration gradient was generated, while the overall cAMP concentration could be either ...
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Cross Talk between a Fungal Blue-Light Perception System and the Cyclic AMP Signaling Pathway
... The mycoparasite Trichoderma atroviride is used as a biolog- ical control agent due to its capacity to attack a broad range of important air- and soilborne phytopathogenic fungi (17). The main mechanism for survival and ...
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Cyclic GMP from the surrounding somatic cells regulates cyclic AMP and meiosis in the mouse oocyte
... Regulation of meiotic prophase arrest in mouse oocytes by GPR3, a constitutive activator of the G s G protein. J. Cell Biol. 171, 255-265. Fig. 10. Working hypothesis for how meiotic arrest is maintained and how LH ...
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Cyclic AMP effectors regulate myometrial oxytocin receptor expression
... RNA extraction, cDNA synthesis, and qPCR RNA extraction, cDNA synthesis, and qPCR were performed as previously reported (17). Primer sets for genes listed in Sup- plemental Table 3 were designed and obtained from ...
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CYCLIC AMP MEDIATED EXCITATORY RESPONSES TO LEUCINE ENKEPHALIN IN APLYSIA NEURONES
... that cyclic AMP is a second messenger responsible for mediation of the ...second-messenger system is the lack of desensitization and the slow build-up of the responses, together with the observation ...
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Mesoporous Silica Nanoparticle-Based Double Drug Delivery System for Glucose-Responsive Controlled Release of Insulin and Cyclic AMP
... In contrast to nonporous nanoparticles, MSN offers both interior pore and exterior particle surfaces for loading different guest molecules. This is particularly useful for controlling the sequence of release for ...
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Small-molecule allosteric activators of PDE4 long form cyclic AMP phosphodiesterases
... The consequences of this are lowered intracellular Ca 2+ levels that lead to disinhibition of adenylyl cyclases-5/6 and thence to elevation of cAMP. Such chronically elevated cAMP levels drive the formation and swelling ...
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Small-molecule allosteric activators of PDE4 long form cyclic AMP phosphodiesterases
... The consequences of this are lowered intracellular Ca 2+ levels that lead to disinhibition of adenylyl cyclases-5/6 and thence to elevation of cAMP. Such chronically elevated cAMP levels drive the formation and swelling ...
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The Effect of Cyclic AMP and Dibutyryl Cyclic AMP on the Permeability Characteristics of the Renal Tubule
... (cyclic AMP) and N 6 ,O 2 -dibutyryl adenosine-3¢,5¢-cyclic monophosphate (dibutyryl cyclic AMP) on renal tubular permeability was studied by microinjection techniques in anesthetized ...
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Cyclic AMP signalling in pancreatic islets
... 35. Yamada S, Komatsu M, Sato Y, Yamauchi K, Kojima I, Aizawa T, Hashizume K. Time- dependent stimulation of insulin exocytosis by 3 ,5 -cyclic adenosine monophosphate in the rat islet beta-cell. Endocrinology ...
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Stimulation by Alcohols of Cyclic AMP Metabolism in Human Leukocytes: POSSIBLE ROLE OF CYCLIC AMP IN THE ANTI INFLAMMATORY EFFECTS OF ETHANOL
... In this study ethanol and certain other short-chain aryl (benzyl and phenethyl) and aliphatic (methyl, propyl, butyl, and amyl) alcohols produced up to 10-fold increases in cyclic AMP (c[r] ...
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cyclic-amp-dependent protein kinase 11
... The scheme shows the possible complexes involving C subunit, MgADP or MgATP, RII(cA)2 and P-RII(cA)2 in the absence (left; solid arrows) and the presence (right; broken arrows) of exogen[r] ...
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Cyclic AMP regulation of mammary tumor virus production.
... Addition of dibutyryl cyclic AMP (cAMP) and agents (isoproterenol and epinephrine) that stimulate the activities of adenylate cyclase enhance the stimulation of mammary tumor virus (MTV)[r] ...
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Cyclic AMP and the Chlamydomonas reinhardtii cell division cycle
... Similarly in type II cells of mutant 195, cells grown at 21 °C and assayed for activity at 25°C had adenylate cyclase activity at 0.3 pmol/min/mg protein but had no adenylate cyclase [r] ...
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Cyclic AMP signalling pathways in the regulation of uterine relaxation
... Cyclic AMP signalling pathways Cyclic AMP is a diffusible intracellular second messenger, which influences many physiological events, by transduc- ing hormone and small molecule effects into ...
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Cyclic AMP Regulates Social Behavior in African Trypanosomes
... IMPORTANCE In bacteria, studies of cell-cell communication and social behavior have profoundly influenced our understanding of microbial physiology, signaling, and pathogenesis. In contrast, mechanisms underlying social ...
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Evidence for the involvement of cyclic AMP in the pheromonal modulation of barnacle settlement
... of cyclic AMP in the settlement of the cypris larva of Balanus amphitrite amphitrite Darwin has been examined through the use of compounds that affect intracellular cyclic AMP ...dibutyryl ...
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