Presence of prolactin receptors in kidney and large intestine of the snake Ptyas mucosa.

@article{Cheng1990PresenceOP,
  title={Presence of prolactin receptors in kidney and large intestine of the snake Ptyas mucosa.},
  author={C. H. K. Cheng and H M Lee and Tzi Bun Ng and C. C. Wong},
  journal={General and comparative endocrinology},
  year={1990},
  volume={79 3},
  pages={
          351-60
        }
}
125I-labeled ovine prolactin was used to test for the presence of prolactin receptors in membranes prepared from tissues of the common rat snake Ptyas mucosa. High levels of specific binding were found in kidney and large intestine membranes prepared from snakes of both sexes. The binding was time, temperature, and protein dependent. The presence of Ca2+ in the incubation medium enhanced the binding, with optimal concentrations at 10-20 mM. Specificity of binding was established by employing… Expand
Presence of prolactin receptors in eel liver and carp kidney and growth hormone receptor in eel liver.
  • T. Ng, T. Hui, C. H. Cheng
  • Biology, Medicine
  • Comparative biochemistry and physiology. A, Comparative physiology
  • 1991
TLDR
The results suggest the presence of prolactin receptors in white eel liver and carp kidney membranes and growth hormone receptors inwhite eel Liver membranes is suggested. Expand
Growth hormone binding sites are present in tissues of the porcupine Hystrix hodgesoni, the snakehead Channa maculata and the winter flounder Pleuronectes americanus but not in those of the lamprey Petromyzon marinus
TLDR
It was found that among the different tissues studied, the liver membranes of Channa maculata and the gonad membranes of Pleuronectes americanus gave the highest specific binding of 125I-bGH. Expand
Regulation of epithelial calcium transport by prolactin: from fish to mammals.
TLDR
The cellular and molecular mechanisms of the PRL-stimulated calcium transport in mammals have been elaborated and it is demonstrated that the duodenal calcium absorption in lactating rats was markedly enhanced by the suckling-induced PRL surge, presumably to provide calcium for milk production. Expand
Study on the purification of growth hormone-like substance from pituitaries of the snake Ptyas mucosa.
Extract from the snake (Ptyas mucosa) pituitaries was capable of inhibiting the binding of 125I-labelled bovine growth hormone to female rat liver membranes. The growth hormone-like substance was notExpand
The effect of enhanced milk yield of dairy cows by frequent milking or suckling on intake and digestibility of the diet.
TLDR
Concentrations of all assayed hormones, except insulin, increased moderately for cows on treatment 2 compared with cows ontreatment 1 and increased dramatically for cattle on treatment 3, and followed the opposite trend. Expand

References

SHOWING 1-10 OF 38 REFERENCES
Prolactin receptors in the rat kidney.
TLDR
The demonstration of specific binding sites for Prolactin localized primarily in the proximal tubules was consistent with renal action of prolactin, predominantly on sodium metabolism. Expand
Prolactin binding sites in Xenopus laevis tissues: comparison between normal and dehydrated animals.
TLDR
Since PRL ranks among the few peptide hormones whose rise in the bloodstream promotes an increase in the number of their own receptors, the reduction of its binding sites in Xenopus specimens exposed to dehydration might lend some support to the earlier hypothesis that transfer to a dehydration environment may bring about some decrease in the blood PRL levels. Expand
Prolactin receptors in the male Rana esculenta.
TLDR
Testosterone is able to restore prolactin binding in hypophysectomized animals, as PRL treatment does, and the annual profile parallels that of renal fractions. Expand
Characterization of prolactin binding by membrane preparations from rat liver.
TLDR
Scatchard analysis of the binding of 125I-labelled sheep Prolactin to receptors indicated that prolactin has a high affinity for its receptor, and binding of prolactIn to liver membranes showed some properties different from those observed with mammary cells. Expand
Properties of a prolactin receptor from the rabbit mammary gland.
Receptors for human, simian, ovine, bovine and murine prolactin, human growth hormone and human placental lactogen have been identified in plasma-membrane-containing subcellular particles isolatedExpand
Occurrence and binding affinity of prolactin receptors in amphibian tissues.
  • B. White
  • Biology, Medicine
  • General and comparative endocrinology
  • 1981
TLDR
The binding of [125I]oPRL to particulate fractions of kidney, bladder, gut, and liver homogenates from representatives of 12 amphibian species was examined, particularly in the context of a role for prolactin in osmoregulation in amphibians. Expand
Studies of insulin, growth hormone and prolactin binding: tissue distribution, species variation and characterization.
TLDR
The specific binding of 125I-labeled insulin, hGH and oPRL was surveyed in crude membrane preparations of various tissues of the monkey, rat, guinea pig, rabbit, sheep, pigeon, and frog, finding no relation between phylogenetic proximity to man and the level of specific binding. Expand
A pigeon crop sac radioreceptor assay for prolactin.
TLDR
Ovine Prolactin, labelled with 125I by either lactoperoxidase or a mild chloramine T method, bound to receptors from the pigeon crop sac mucosa cells of prolactin-injected pigeons, demonstrating specific, dependent on time, temperature and the concentration of receptors. Expand
Prolactin and tadpole metamorphosis evidence of prolactin receptors in premetamorphic Rana catesbeiana liver and tail fin
TLDR
Pretreatment of the liver and tail fin particulate fractions with degradative enzymes revealed that trypsin and phospholipase C reduced the subsequent specific [125I]oPRL binding in both tissues, and neuraminidase treatment decreased the prolactin binding in the liver while having no effect on the tail fin. Expand
Prolactin receptors in tilapia (Sarotherodon mossambicus) tissues: binding studies using 125I-labeled ovine prolactin.
TLDR
The binding of 125I-labeled ovine prolactin (oPRL) to membrane preparations of tissue from freshwater-adapted tilapia (Sarotherodon mossambicus) was examined and indicated that a majority of the PRL receptors were already occupied by endogenous PRL. Expand
...
1
2
3
4
...