Regulation, hormone

R. P. Phans and D. M. Reid, eds., Emyclopedia of Plant Physiology Hormonal Regulation of Development 111, Role of EnvironmentalEactors, Vol. 11, Springer Vedag, Berlin, 1985. 

Three hormones regulate turnover of calcium in the body (22). 1,25-Dihydroxycholecalciferol is a steroid derivative made by the combined action of the skin, Hver, and kidneys, or furnished by dietary factors with vitamin D activity. The apparent action of this compound is to promote the transcription of genes for proteins that faciUtate transport of calcium and phosphate ions through the plasma membrane. Parathormone (PTH) is a polypeptide hormone secreted by the parathyroid gland, in response to a fall in extracellular Ca(Il). It acts on bones and kidneys in concert with 1,25-dihydroxycholecalciferol to stimulate resorption of bone and reabsorption of calcium from the glomerular filtrate. Calcitonin, the third hormone, is a polypeptide secreted by the thyroid gland in response to a rise in blood Ca(Il) concentration. Its production leads to an increase in bone deposition, increased loss of calcium and phosphate in the urine, and inhibition of the synthesis of 1,25-dihydroxycholecalciferol. 

Amphibians. Immunosuppression has been shown to occur during metamorphosis in several amphibians, and appears to be hormonally regulated. The disappearance of 11 populations of toad from Colorado was associated with immune suppression, and frog mortalities have been associated with infection by a commonly occurring bacteria, Aeromonas hydrophila the cause of the immunosuppression in these animals has not been elucidated. " ... 

Pilkis, S. J., El-Maghrabi, M. R., and Claus, T. H., 1988. Hormonal regulation of hepatic gluconeogenesis and glycolysis. Annual Review of Biochemistry 57 755-783. 

U (No CaM) < O Q. CL Heart, kidney, Brain, liver, widespread Cardiac function, Ca2+-dependent regulation, hormonal regulation of gluconeogenesis, cell proliferation, coincidence detector for NO... 

Uptake of LCFAs across the lipid-bilayer of most mammalian cells occurs through both a passive diffusion of LCFAs and a protein-mediated LCFA uptake mechanism. At physiological LCFA concentrations (7.5 nM) the protein-mediated, saturable, substrate-specific, and hormonally regulated mechanism of fatty acids accounts for the majority (>90%) of fatty acid uptake by tissues with high LCFA metabolism and storage such as skeletal muscle, adipose tissue, liver,... 

Growth hormone, also called somatotropic hormone, is secreted by the anterior pituitary. This hormone regulates the growth of the individual until somewhere around early adulthood or the time when the person no longer gains height. 

Davidson, A., Halestrap, A.P. (1989). Inhibition of mitochondrial-matrix inorganic pyrophosphatase by physiological [Ca ], and its role in the hormonal regulation of mitochondrial matrix volume. Biochem. J. 258,817-821. 

Neuroendocrine determinants of stress have been found in rodent studies linking endothelial cell responses to hormonal regulation of the HS response (Blake et al., 1991). When rats are physically restrained some of their tissues elaborate HS genes. 

Singh, N.K., La Rosa, P.C., Handa, A.K., Hasegawa, P.M. Bressan, R.A. (1987f>). Hormonal regulation of protein synthesis associated with salt tolerance in plant cells. Proceedings of the National Academy of Sciences, USA, 84,739-43. 

Ness GC> Chambers CM Feedback and hormonal regulation of hepatic d-hydroxy-d-methylglutaryl coen me A reductase the concept of cholesterol buffering capacity. Proc Soc Exp Biol Med 2000 224 8. 

CP-channels with even smaller conductance have been described for the lacrimal and other exocrine glands [76,77]. These channels have a conductance of 1-2 pS. Unlike the ICOR-channel they appear to be blocked by millimolar concentrations of furosemide [77]. Most recent and only partially published data from my own laboratory obtained with the above modified nystatin technique [50,133,134] indicate that the respiratory epithelial cells and colonic carcinoma cells possess these types of small CP channels, and that these channels are involved in hormonal regulation of CP-conductance (cf. section 5). These CP-channels are regulated by cytosolic Ca. Hormonally induced increases in cytosolic Ca lead to an abrupt increase in the probability of these small CP-channels being open, yet they have no effect on the ICOR-channel. Data of this kind reinforce that the physiological importance of these small CP-channels may have been grossly underestimated. 

At this stage we appreciate the relevance of small Cl -channels for hormonally regulated transepithelial Cl -transport (cf. sections 2.4 and 5). Unfortunately substances such as NPPB are rather poor inhibitors of these small Cl -channels. Therefore, new compounds specifically directed towards these channels will be required. Our search into this direction is still ongoing. 

E. C. Landsberg, Hormonal regulation of iron-stress response in sunflower roots a morphological and cytological investigation. Protopkisma /94 69 (1996). 

Nyby J. (1983). Volatile and non-volatile chemosignals of female rodents differences in hormonal regulation. In Chemical Signals in Vertebrates 3 (Miiller-Schwarze D. and Silverstein R.M., eds.). Plenum, New York, pp. 179-194. 

Thavathiru E., Jana N. and De P.K. (1999). Abundant secretory lipocalins displaying male and lactation-specific expression in adult hamster submandibular gland cDNA cloning and sex hormone-regulated repression. Eur J Biochem 266, 467-476. 

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