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圆头精子症

Globozoospermia.

作者信息

Bhattarai L, Gautam B, Raut B B, Chettri S

机构信息

Department of Anatomy, Universal College of Medical Sciences, Bhairahawa, Nepal.

Department of Gynaecology, Lumbini Province Hospital, Butwal, Nepal.

出版信息

Kathmandu Univ Med J (KUMJ). 2023 Jan-Mar;21(81):98-99.

Abstract

Male infertility may be due to low sperm concentration, poor sperm motility, or abnormal morphology. Among the factors involved in male infertility, there is a rare morphology disorder called "Globozoospermia". This condition is primarily characterized by the presence of round-headed spermatozoa, absence of acrosomal cap and cytoskeleton defects around the nucleus. The morphological characteristics of globozoospermia are formed during spermiogenesis. We report here a case of male infertility due to morphological disorder Globozoospermia. Assessment of semen by observing macroscopic and microscopic parameters are not sufficient for sperm analysis. In present case, macroscopic and microscopic assessment was within normal range. Morphological assessment showed 80% of spermatozoa with round head and absence of acrosomal cap. The absence of acrosome makes fertilization impossible since these sperm are unable to bind to the zona pellucida. By using Intracytoplasmic Sperm Injection (ICSI), conception is possible; however, the fertilization rate remains very low.

摘要

男性不育可能是由于精子浓度低、精子活力差或形态异常。在导致男性不育的因素中,有一种罕见的形态学紊乱称为“圆头精子症”。这种情况主要特征是存在圆头精子、顶体帽缺失以及细胞核周围细胞骨架缺陷。圆头精子症的形态特征在精子发生过程中形成。我们在此报告一例因形态学紊乱圆头精子症导致的男性不育病例。通过观察宏观和微观参数来评估精液对于精子分析是不够的。在本病例中,宏观和微观评估均在正常范围内。形态学评估显示80%的精子头部呈圆形且无顶体帽。顶体的缺失使得受精不可能发生,因为这些精子无法与透明带结合。通过使用卵胞浆内单精子注射(ICSI),受孕是可能的;然而,受精率仍然非常低。

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