Abstract
ABSTRACT This study was performed to: detect the histological, immunohistochemical, and biochemical alterations that may occur in the testes of adult rats in induced hypothyroidism. And to investigate which one, ozone or MSCs-MVs have better therapeutic effect on testicular changes after hypothyroidism. Eighty-four male adult rats were separated into: control group, hypothyroidism group: rats will be given carbimazole for 30 days, ozone group: rats treated as hypothyroidism group then will be injected with ozone intraperitoneal for 7 days. MSC-MVs group: rats treated as hypothyroidism group then will be injected with a single intravenous dose MSC-MVs. Specimens of testes were handled for light, electron microscope, and immunohistochemical of vimentin and S100. Biochemical analysis for; MDA and TNFα; serum testosterone, TSH, T3, and T4 was done, also, sperm count and morphology assay. Morphometric and statistical analysis were performed. Hypothyroidism group showed disorganized seminiferous tubules. A noticeable gap was between the basement membrane and the germinal epithelium. Wide interstitium had congested vessels and acidophilic homogenous material. Vacuolated germinal epithelium and few germ cells had dark nuclei with noticeable separation of between the basement membrane and the germinal epithelium. Ozone and MSCs-MVs induced improvement in all the previous parameters and restoration of spermatogenesis. In Conclusion MSCs-MVs has better ameliorative effect than ozone on hypothyroidism-exposed testes.
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