Eastin, W.C. and Spaziani, E. (1978) On the Control of Calcium Secretion in the Avian Shell Gland (Uterus). Biology of Reproduction, 19, 493-504. - References

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Eastin, W.C. and Spaziani, E. (1978) On the Control of Calcium Secretion in the Avian Shell Gland (Uterus). Biology of Reproduction, 19, 493-504.
https://doi.org/10.1095/biolreprod19.3.493

has been cited by the following article:

TITLE: Calcium Participates in Secretion of Porphyrin from Shell Gland Epithelial Cells of Japanese Quail (Coturnix coturnix japonica)

AUTHORS: Osamu Kai

KEYWORDS: Japanese Quail, Shell Gland Epithelial Cells, In Vitro Culture, Calcium Chloride, Protoporphyrin

JOURNAL NAME: Open Journal of Animal Sciences, Vol.9 No.1, January 24, 2019

ABSTRACT: To investigate factors involved in the secretion of protoporphyrin IX (PpIX), a superficial eggshell pigment, from shell gland epithelial cells of Japanese quail, we cultured cells in Ham’s F12 medium with calcium chloride and quail plasma. The addition of hormones (prostaglandin F2α, progesterone, estradiol-17β) to the medium did not change the PpIX concentration in the culture supernatant, but changing the calcium chloride (CaCl2) concentration did: a lower concentration of CaCl2 led to a higher PpIX concentration; 0 mM CaCl2 enhanced the secretion of PpIX from epithelial cells prepared at 5 or 7 mM CaCl2. The result suggests that a drop in concentration of CaCl2 mimics the end of shell calcification and stimulates rapid secretion of PpIX in vivo. Bovine serum albumin was almost as effective as quail plasma for PpIX secretion in culture, and would facilitate further study of the mechanism of PpIX secretion.