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Effects of stanniectomy and experimental hypercalcemia on plasma calcium levels and calcium influx in American eels, Anguilla rostrata, LeSueur.

Abstract：

:Intraperitoneal injection of CaCl2 in intact, sham-stanniectomized, and stanniectomized American eels, Anguilla rostrata (LeSueur), resulted in a rapid elevation of plasma calcium level which was more marked and of longer duration in the stanniectomized eels. The same treatment reduced whole body calcium influx (JinCa2+) in the intact and sham-stanniectomized groups for the first but not the second of two 4 hr flux periods. The same treatment did not affect JinCa2+ in the stanniectomized eels. We conclude that calcium loading in eels with intact stannius corpuscles (CS) results in the release of a CS hormone (stanniocalcin) which inhibits the uptake of calcium from the environment and that this facilitates the return to normocalcemia. These data provide direct evidence for a relationship between stanniocalcin release in vivo and a hypocalcemic response and the first evidence concerning the functional turnover time of this hormone.

journal_name

Gen Comp Endocrinol

journal_title

General and comparative endocrinology

authors

Fenwick JC,Brasseur JG

doi

10.1016/0016-6480(91)90321-v

subject

Has Abstract

pub_date

1991-06-01 00:00:00

pages

459-65

issue

3

eissn

0016-6480

issn

1095-6840

journal_volume

82

pub_type

杂志文章

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