منابع مشابه
Prolactin and growth hormone in fish osmoregulation.
Prolactin is an important regulator of multiple biological functions in vertebrates, and has been viewed as essential to ion uptake as well as reduction in ion and water permeability of osmoregulatory surfaces in freshwater and euryhaline fish. Prolactin-releasing peptide seems to stimulate prolactin expression in the pituitary and peripheral organs during freshwater adaptation. Growth hormone,...
متن کاملThe role of prolactin in fish osmoregulation: a review.
The protein hormone prolactin (PRL) was first discovered as an anterior pituitary factor capable of stimulating milk production in mammals. We now know that PRL has over 300 different functions in vertebrates. In fish, PRL plays an important role in freshwater osmoregulation by preventing both the loss of ions and the uptake of water. This paper will review what is currently known about the str...
متن کاملTRPV1 and Osmoregulation
Central control of systemic osmoregulation is the job of the organum vasculosum lamina terminalis (OVLT), located at the rostral ventral edge of the third ventricle. In this week’s Journal, Ciura and Bourque demonstrate that OVLT neurons are intrinsically osmosensitive because they express transient receptor potential vanilloid 1 (TRPV1) channels. The authors compared the neuronal activity of h...
متن کاملOsmoregulation and excretion.
The article discusses advances in osmoregulation and excretion with emphasis on how multicellular animals in different osmotic environments regulate their milieu intérieur. Mechanisms of energy transformations in animal osmoregulation are dealt with in biophysical terms with respect to water and ion exchange across biological membranes and coupling of ion and water fluxes across epithelia. The ...
متن کاملRole of Prolactin, Growth Hormone, Insulin-like Growth Factor I and Cortisol in Teleost Osmoregulation $ + 0 ) 2 6 -4
Maintenance of constant cellular ion concentrations is a basic requirement of all life forms. The strategy evolved by teleost fish to achieve this requirement is by maintaining nearly constant levels of extracellular ions at approximately one-third the ionic strength of seawater (SW). In freshwater (FW), teleosts must counteract the passive loss of ions and gain of water by actively taking up i...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1975
ISSN: 0003-1569
DOI: 10.1093/icb/15.4.937