PUBLICATION

Novel Discoveries in Acid-base Regulation and Osmoregulation: A Review of Selected Hormonal Actions in Zebrafish and Medaka

Authors
Yan, J.J., Hwang, P.P.
ID
ZDB-PUB-190318-1
Date
2019
Source
General and comparative endocrinology   277: 20-29 (Review)
Registered Authors
Hwang, Pung Pung
Keywords
Calcitonin gene related peptides, Estrogen-related receptors, Insulin-like growth factor 1, Isotocin, Osmoregulation, Stanniocalcin 1
MeSH Terms
  • Acid-Base Equilibrium*
  • Animals
  • Hormones/metabolism*
  • Models, Biological
  • Oryzias/metabolism*
  • Osmoregulation*
  • Zebrafish/metabolism*
PubMed
30878350 Full text @ Gen. Comp. Endocrinol.
Abstract
Maintenance of internal ionic and acid-base homeostasis is critical for survival in all biological systems. Similar to mammals, aquatic fishes have developed sophisticated homeostatic mechanisms to mitigate metabolic or environmental disruptions in ionic and acid-base status of systemic body fluids via hormone-controlled transport of ions or acid equivalents. The present review summarizes newly discovered actions of several hormones in zebrafish (Danio rerio) and medaka (Oryzias latipes) that have greatly contributed to our overall understanding of ionic/acid-base regulation. For example, isotocin and cortisol were reported to enhance transport of various ions by stimulating the proliferation and/or differentiation of ionocyte progenitors. Meanwhile, stanniocalcin-1, a well-documented hypocalcemic hormone, was found to suppress ionocyte differentiation and thus downregulate secretion of H+ and uptake of Na+ and Cl-. Estrogen-related receptor and calcitonin gene-related peptide also regulate the differentiation of certain types of ionocytes to either stimulate or suppress H+ secretion and Cl- uptake. On the other hand, endothelin and insulin-like growth factor 1 activate the respective secretion of H+ and Na+/Cl through fast actions. These new findings enhance our understanding of how hormones regulate fish ionic and acid-base regulation while further providing new insights into vertebrate evolution, mammalian endocrinology and human disease-related therapeutics.
Genes / Markers
Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping