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Effects of histamine on the contractility of the rat distal cauda epididymis.
Trajano, Francisco Mateus Gonçalves; Gomes, Luana Talinne da Costa; Dantas, Pedro Brüch; Sena, Maele Oliveira de; Oliveira, Jonas Ivan Nobre; Ventura, Sabatino; Gavioli, Elaine Cristina; da Silva Junior, Edilson Dantas.
Afiliação
  • Trajano FMG; Mode of Drug Action Laboratory, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • Gomes LTDC; Mode of Drug Action Laboratory, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • Dantas PB; Mode of Drug Action Laboratory, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • Sena MO; Mode of Drug Action Laboratory, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • Oliveira JIN; Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • Ventura S; Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Australia.
  • Gavioli EC; Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
  • da Silva Junior ED; Mode of Drug Action Laboratory, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil; Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil. Electronic address: edsjunior9@gmail.com.
Eur J Pharmacol ; 945: 175603, 2023 Apr 15.
Article em En | MEDLINE | ID: mdl-36804548
The motor activity of the epididymis duct is an essential process for male fertility and it is regulated by hormonal, neuronal and epithelial mechanisms. However, although there is evidence for the presence of histamine in the epididymis, its effects on epididymal motor activity are unknown. This study sought to evaluate the contractile effects of histamine on the rat distal cauda epididymis duct. Segments of the distal cauda epididymis duct from male Wistar rats were isolated and used in isolated organ bath experiments to evaluate the contractile effects of histamine in the absence or presence of antagonists of histamine receptors, α1-adrenoceptors and muscarinic acetylcholine receptors. The effects of histamine on noradrenaline induced contractions were also investigated. Histamine was able to induce phasic contractions on rat distal cauda epididymis duct which were prevented by promethazine 10-1000 nM (H1 receptor antagonist), ranitidine 1-100 µM (H2 receptor antagonist), atropine 100 nM (muscarinic antagonist), and prazosin 100 nM (α1-adrenoceptor antagonist). In addition, histamine was also able to modify noradrenaline-induced contractions possibly via activation of H1 and H2 receptors. In conclusion, this study demonstrates that histamine can induce phasic contractions of rat distal cauda epididymis via H2 receptors and autonomic neurotransmitters. Histamine may also exert modulatory actions on contractions of rat distal cauda epididymis duct induced by adrenergic receptor agonists. Further studies are necessary to unveil the localization of histamine receptors within the epididymal duct and the consequences of manipulation of the histaminergic system on epididymal function and male fertility.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Histamina / Epididimo Limite: Animals Idioma: En Revista: Eur J Pharmacol Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Histamina / Epididimo Limite: Animals Idioma: En Revista: Eur J Pharmacol Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda