Crustacean hyperglycemic hormone (CHH) neuropeptidesfamily: Functions, titer, and binding to target tissues

J. Sook Chung, N. Zmora, H. Katayama, Naoaki Tsutsui

Research output: Contribution to journalArticle

115 Citations (Scopus)

Abstract

The removal of the eyestalk (s) induces molting and reproduction promoted the presence of regulatory substances in the eyestalk (ES), particularly medulla terminalis X-organ and the sinus gland (MTXO-SG). The PCR-based cloning strategies have allowed for isolating a great number of cDNAs sequences of crustacean hyperglycemic hormone (CHH) neuropeptides family from the eyestalk and non-eyestalk tissues, e.g., pericardial organs and fore- and hindguts. However, the translated corresponding neuropeptides in these tissues, their circulating concentrations, the mode of actions, and specific physiological functions have not been well described. The profiles of CHH neuropeptides present in the MTXO-SG may differ among decapod crustacean species, but they can be largely divided into two sub-groups on the basis of structural homology: (1) CHH and (2) molt-inhibiting hormone (MIH)/mandibular organ-inhibiting hormone (MOIH)/vitellogenesis/gonad-inhibiting hormone (V/GIH). CHH typically elevating the level of circulating glucose from animals under stressful conditions (hyper- and hypothermia, hypoxia, and low salinity) has multiple target tissues and functions such as ecdysteroidogenesis, osmoregulation, and vitellogenesis. Recently, MIH, known for exclusively suppressing ecdysteroidogenesis in Y-organs, is also reported to have an additional role in vitellogenesis of adult female crustacean species, suggesting that some CHH neuropeptides may acquire an extra regulatory role in reproduction at adult stage. This paper reviews the regulatory roles of CHH and MIH at the levels of specific functions, temporal and spatial expression, titers, their binding sites on the target tissues, and second messengers from two crab species: the blue crab, Callinectes sapidus, and the European green crab, Carcinus maenas. It further discusses the diverse regulatory roles of these neuropeptides and the functional plasticity of these neuropeptides in regard to life stage and species-specific physiology.

Original languageEnglish
Pages (from-to)447-454
Number of pages8
JournalGeneral and Comparative Endocrinology
Volume166
Issue number3
DOIs
Publication statusPublished - May 2010
Externally publishedYes

Fingerprint

Neuropeptides
Brachyura
Crustacea
hormones
neuropeptides
Vitellogenesis
molting
vitellogenesis
Reproduction
ecdysteroidogenesis
Decapoda (Crustacea)
Osmoregulation
Carcinus maenas
Molting
sinuses
Salinity
Gonads
Second Messenger Systems
Hypothermia
crabs

Keywords

  • Binding
  • CHH
  • Energy metabolism
  • MIH
  • Molting
  • Osmoregulation
  • Second messengers
  • Titer
  • Vitellogenesis
  • VtG expression

ASJC Scopus subject areas

  • Endocrinology

Cite this

Crustacean hyperglycemic hormone (CHH) neuropeptidesfamily : Functions, titer, and binding to target tissues. / Chung, J. Sook; Zmora, N.; Katayama, H.; Tsutsui, Naoaki.

In: General and Comparative Endocrinology, Vol. 166, No. 3, 05.2010, p. 447-454.

Research output: Contribution to journalArticle

Chung, J. Sook ; Zmora, N. ; Katayama, H. ; Tsutsui, Naoaki. / Crustacean hyperglycemic hormone (CHH) neuropeptidesfamily : Functions, titer, and binding to target tissues. In: General and Comparative Endocrinology. 2010 ; Vol. 166, No. 3. pp. 447-454.
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