Acute Effects and Long‐Term Sequelae of 1,3‐Dinitrobenzene on Male Reproduction in the Rat II. Quantitative and Qualitative Histopathology of the Testis

REX A. HESS, RALPH E. LINDER, LILLIAN F. STRADER, SALLY D. PERREAULT

Research output: Contribution to journalArticle

Abstract

This study determined the quantitative and qualitative histopathologic effects of a single oral dose of 1,3‐dinitrobenzene (48 mg/kg) on the rat testis from 1 to 175 days postexposure. The testis was damaged severely by hour 24, as evidenced by increased numbers of regressive seminiferous tubules that exhibited degenerating pachytene spermatocytes, chromatin margination in spermatids, giant cells, deformed spermatid heads, retained spermatids, and reduced numbers of meiotic figures. The major effects during the first 48 hours posttreatment were degeneration or exfoliation of pachytene spermatocytes and round spermatids and the retention of step 19 spermatids. These regressive effects continued until 24 days, after which the tubules either recovered or became atrophic. At the end of the study (175 days), three males were normal, one had regressed testicles, and three males had atrophic tubules (15 to 45%). Several cellular abnormalities were common throughout the period. In addition, the frequency of the stages of spermatogenesis was altered, an indication of a disturbance in the kinetics of spermatogenesis. 1,3‐Dinitrobenzene produced profound and specific lesions in the seminiferous tubules, and recovery was slow and incomplete. Atrophic tubules seemed to form if the normal cellular associations were not reestablished within 24 days, possibly due to the inability of Sertoli cells to reorganize the synchrony of germ cell development. 1988 American Society of Andrology

Original languageEnglish (US)
Pages (from-to)327-342
Number of pages16
JournalJournal of andrology
Volume9
Issue number5
DOIs
StatePublished - 1988

Keywords

  • abnormal spermatogenesis
  • testis
  • toxicology

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Reproductive Medicine
  • Endocrinology
  • Urology

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