Mouse spermatozoa with higher fertilization rates have thinner nuclei

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Mouse spermatozoa with higher fertilization rates have thinner nuclei

BACKGROUND Although spermatozoa with normal morphology are assumed to have uniform fertilization ability, recent data show that even normal spermatozoa have considerable variation in their head shape which is associated with differences in fertilization ability. Appropriate quantitative indicators for good sperm morphology, however, remain unidentified. METHODS Therefore, in an effort to iden...

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One of the best discriminators for the fertilization potential of human spermatozoa is sperm morphology. The problem in the assessment of the sperm morphological characteristics is their pleiomorphism. Examination of spermatozoa with the light microscope can provide only limited information on their internal structure. More detailed examination of sperm structure using electron microscopy can r...

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Different fertilization rates between immotile testicular spermatozoa and immotile ejaculated spermatozoa for ICSI in men with Kartagener's syndrome: case reports.

We report two cases of infertility treatment in couples where males suffered from Kartagener's syndrome (KS) and a total absence of motile sperm in the ejaculate. A total of three ICSI cycles was carried out. In all cycles, viable ejaculated or testicular spermatozoa were selected using the hypo-osmotic swelling (HOS) test. Case 1: In the first ICSI cycle total fertilization failure occurred af...

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ژورنال

عنوان ژورنال: PeerJ

سال: 2017

ISSN: 2167-8359

DOI: 10.7717/peerj.3913