Aspects of Male Reproductive Toxic Effects of Quassia amara L.: Histopathological and Ultrastructural Study in Mouse


Affiliations

  • Bharathidasan University, Department of Animal Science, Tiruchirappalli, Tamil Nadu, 620 024, India
  • Mercy College, Palakkad, Kerala, 678006, India

Abstract

Quassia amara is a Brazilian medicinal plant traditionally used as an herbal remedy for a variety of diseases. Quassin is the major secondary chemical compound in it, which is under investigation as an anti-malarial compound. There are preliminary studies implicating Q. amara in male reproductive toxicity. Hence, this elaborate study was undertaken to find the male reproductive toxic effects of Q. amara and quassin. Methanolic extract of Q. amara bark and quassin were administered to male mice for 35 days. The cauda epididymidal sperm, testis and epididymis were subjected to analysis adopting light and transmission electron microscopy. Sperm counts, motility and viability decreased. The incidence of sperm with abnormal morphologies increased. There was premature loss of germ cells from the seminiferous tubules, which correlated with Sertoli cell pathology. The Leydig cells were vacuolated, suggesting a hypo-androgen status. The epididymis indicated severe histopathological changes, including reflection of a mitogenic / tumorigenic effect of Q. amara. Thus, this study indicates that Q. amara, when applied as a therapeutic, could be severely toxic to male reproductive mechanisms and the principal mechanism of action appears to be through Leydig cells. Quassin, the major secondary metabolite responsible for the therapeutic potential of Q. amara, is also the one causative of the male reproductive toxic effects. Thus, this study substantiates the claim that Q. amara is toxic to male reproductive system.

Keywords

Epididymis, Histopathology, Sperm, Testis, Quassia amara, Quassin

Subject Discipline

Obstetrics and Gynaecology

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