Changes in parathyroid hormone receptor binding affinity during egg laying: Implications for calcium homeostasis in chicken

@article{Yasuoka1996ChangesIP,
  title={Changes in parathyroid hormone receptor binding affinity during egg laying: Implications for calcium homeostasis in chicken},
  author={Tadashi Yasuoka and Mitsuo Kawashima and T. Takahashi and Atsuko Iwata and Nobumitsu Oka and K. Tanaka},
  journal={Journal of Bone and Mineral Research},
  year={1996},
  volume={11}
}
Parathyroid hormone (PTH) receptor bindings were examined in the membrane fraction of the calvaria and the kidney of the hen by the use of [125I]PTH‐related protein (PTHrP) binding assays. The binding specificity, reversibility, and saturation of the receptor were demonstrated. The equilibrium dissociation constant (Kd) and the maximum binding capacity (Bmax) were obtained by Scatchard analyses. In both calvaria and kidney, Kd and Bmax values decreased at 3 h before oviposition in egg‐laying… 
Developmental changes of parathyroid hormone/parathyroid hormone-related peptide and calcitonin receptor binding properties in the chicken calvaria and kidney.
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The results suggest that the binding properties of PTH/PTHrP receptor and of CT receptor may be influenced by gonadal hormones relating to sexual maturation.
Changes in parathyroid hormone-related peptide receptor binding in the shell gland of laying hens (Gallus domesticus) during the oviposition cycle.
TLDR
The results suggest that PTH acts on the endometrium of the shell gland during the eggshell calcification.
Calcitonin Receptor Binding Properties in Bone and Kidney of the Chicken During the Oviposition Cycle
TLDR
The results suggest that the binding affinity and capacity of the CT receptor in the calvaria and the kidney of the hen may be modulated by the ovarian steroid hormone.
Parathyroid hormone receptor binding property in the shell gland of oviduct of the guineafowl during an oviposition cycle.
TLDR
The results suggest that PTH/PTHrP receptors are present in the shell gland of the guineafowl, and their binding may be related to eggshell formation.
Parathyroid hormone-related peptide directly increases adrenocorticotropic hormone secretion from the anterior pituitary in hens.
TLDR
The present study suggests that PTHrP may act directly on the anterior pituitary via its receptor binding and may enhance ACTH secretion from this tissue in hens.
Calcium homeostasis and vitamin D metabolism and expression in strongly calcifying laying birds.
  • A. Bar
  • Biology, Medicine
    Comparative biochemistry and physiology. Part A, Molecular & integrative physiology
  • 2008
TLDR
The present review deals with vitamin D metabolism and the expression of the above-mentioned proteins in birds, with special attention to the strongly calcifying laying bird.
Ligand binding and signalling pathways of PTH receptors in sea bream (Sparus auratus) enterocytes
TLDR
The characterisation of PTH receptors (PTHR) in piscine enterocytes is established and the amino acid residues important for receptor activation and for stabilising the ligand/receptor complex are established, by using amino-terminal PTHrP peptides.
Changes in Calcitonin Receptor Binding in the Shell Gland of Laying Hens (Gallus domesticus) During the Oviposition Cycle
TLDR
The results suggest that CT may not act on the endometrium of the shell gland during most time of theshell calcification period but may act several hours during the last period of calcification as well as post-calcification period.
Calcitonin directly increases adrenocorticotropic hormone-stimulated corticosterone production in the hen adrenal gland.
TLDR
The result suggested that CT acts directly on the adrenocortical cells via its receptor binding and increases responsiveness of ACTH on corticosterone production in the laying hen.
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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