論文

査読有り
2019年1月

Compound 48/80 reduces the crop-emptying rate, likely through a histamine-associated pathway in chicks

Domestic Animal Endocrinology
  • Tetsuya Tachibana
  • ,
  • Wataru Ueoka
  • ,
  • Md Sakirul
  • ,
  • Islam Khan
  • ,
  • Ryosuke Makino
  • ,
  • Mark A. Cline

66
開始ページ
57
終了ページ
63
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.domaniend.2018.10.001

© 2018 Elsevier Inc. Infectious conditions are associated with reduced food passage through the digestive tract in both mammals and chicks; however, the precise mechanism mediating this response in chicks remains unclear. The purpose of the present study was to determine if mast cells, a blood cell type which plays an important role in the immune system, might affect food passage through the digestive tract in chicks. Specifically, we performed intraperitoneal (IP) injections of compound 48/80, an inducer of mast cell degranulation, and measured crop emptying. The IP injection of compound 48/80 significantly reduced the crop-emptying rate, but it did not affect the proventriculus to small intestine transit rate or the number of defecations. We also found that IP-injected histamine, which is secreted by mast cells, also reduced the crop-emptying rate. In addition, IP injection of 2-pyridylethylamine (histamine H1 receptor agonist), but not dimaprit, (R)-(−)-α-methylhistamine, and VUF8430 (histamine H2, H3, and H4 receptor agonists, respectively), reduced the crop-emptying rate, implying that histamine reduces the crop emptying rate via the histamine H1 receptor. Finally, we found that IP injection of compound 48/80 reduced mRNA expression of histidine decarboxylase, a rate-limiting enzyme for histamine synthesis, in the esophagus and proventriculus at 1 h and the proventriculus and duodenum at 3 h after the injection. In sum, the present study suggests that the degranulation of mast cells causes a reduction in the crop-emptying rate, possibly via the histamine pathway in chicks.

リンク情報
DOI
https://doi.org/10.1016/j.domaniend.2018.10.001
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/30472035
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85056807235&origin=inward

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