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Estrogen-Like Effect of Bazi Bushen Capsule in Ovariectomized Rats
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Obestatin: its physicochemical characteristics and physiological functions.

Sheng-Qiu Tang1, Qing-Yan Jiang, Yong-Liang Zhang

  • 1Laboratory of Animal Physiology and Biochemistry, College of Animal Science, South China Agriculture University, Wushan Avenue, Tianhe District, Guangzhou 510642, China.

Peptides
|March 8, 2008
PubMed
Summary
This summary is machine-generated.

Obestatin, a peptide hormone, has diverse physiological roles, including regulating thirst, anxiety, and cell proliferation. This review clarifies its functions and structure amidst conflicting research findings.

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Area of Science:

  • Endocrinology
  • Neuroscience
  • Cell Biology

Background:

  • Obestatin, co-encoded with ghrelin, is a 23-amino acid peptide with initially reported roles in appetite and gut motility.
  • Recent studies have challenged these initial findings, suggesting broader physiological functions for obestatin.
  • Controversy exists regarding obestatin's cognate receptor and precise biological effects.

Purpose of the Study:

  • To provide a comprehensive review of the latest research on obestatin.
  • To elucidate the structure, distribution, and physiological functions of obestatin.
  • To address the ongoing scientific debate surrounding obestatin's effects and receptor interactions.

Main Methods:

  • Literature review of recent scientific publications on obestatin.
  • Analysis of studies investigating obestatin's effects on various physiological processes.
  • Examination of research on obestatin's interaction with potential receptors, including GPR39.

Main Results:

  • Obestatin's functions extend beyond appetite regulation to include inhibition of thirst and anxiety, memory enhancement, sleep regulation, and modulation of cell proliferation.
  • Specific findings indicate obestatin stimulates piglet liver and adipose cell proliferation while inhibiting insulin-like growth factor-I (IGF-I) secretion.
  • The orphan receptor GPR39 has been implicated, but its definitive role as the sole obestatin receptor remains under investigation.

Conclusions:

  • Obestatin exhibits a complex array of physiological functions, distinct from its initially proposed roles.
  • Further research is required to fully understand obestatin's signaling pathways and its cognate receptor(s).
  • This review consolidates current knowledge, highlighting obestatin's significance in metabolic and neural processes.