The effect of streptozotocin-induced diabetes on the rat seminal vesicle: A possible pathophysiological basis for disorders of ejaculation

John F.B. Morrison, S. Dhanasekaran, Rajan Sheen, C. M. Frampton, Eric Mensah-Brown

Research output: Chapter in Book/Report/Conference proceedingConference contribution

15 Citations (Scopus)

Abstract

In the streptozotocin (STZ)-diabetic rat major increases in noradrenaline concentration and content of the seminal vesicles were evident as early as 7 weeks following induction of hyperglycemia and returned toward normal after 34 weeks of hyperglycemia. There were significant reductions in the concentration and content of dopamine at 19-42 weeks of diabetes, and small occasionally significant reductions in the content of serotonin and adrenaline, particularly around 19-26 weeks after STZ treatment. The uptake of tritiated noradrenaline in the diabetics was increased at 12 weeks compared to the controls, and decreased to control levels with increasing age. Release of tritiated noradrenline was increased in response to electrical field stimulation and high potassium solutions, and raising calcium concentration caused increased release at rest and during electrical stimulation. Immunohistochemical demonstration of tyrosine hydroxylase was increased during the period when the noradrenaline concentration and content were elevated. It is concluded that there are significant changes in the sympathetic innervation of the seminal vesicle during the course of STZ diabetes, and that alterations in the reuptake, release, and synthesis of the neurotransmitter noradrenaline may contribute to changes in the concentration of the amine in the tissue. It is possible that the changes observed are related to the remodeling and regrowth of sympathetic nerve endings damaged in the early stages of hyperglycemia. These changes may also contribute to disorders of ejaculation in diabetes.

Original languageEnglish
Title of host publicationDiabetes Mellitus and Its Complications
Subtitle of host publicationMolecular Mechanisms, Epidemiology, and Clinical Medicine
PublisherBlackwell Publishing Inc.
Pages267-279
Number of pages13
ISBN (Print)1573316350, 9781573316354
DOIs
Publication statusPublished - Nov 2006

Publication series

NameAnnals of the New York Academy of Sciences
Volume1084
ISSN (Print)0077-8923
ISSN (Electronic)1749-6632

Keywords

  • Catecholamines
  • Male reproductive dysfunction
  • Noradrenaline
  • Seminal vesicle

ASJC Scopus subject areas

  • General Neuroscience
  • General Biochemistry,Genetics and Molecular Biology
  • History and Philosophy of Science

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