Genetic sperm defects.
نویسنده
چکیده
Genetic sperm defects are specific sperm defects, which have been shown to have a genetic mode of transmission. Such genetic linkage, either direct or indirect, has been associated with a number of sperm defects in different species, with this number increasing with improved diagnostic capabilities. A number of sperm defects, which have proven or suspected genetic modes of transmission are discussed herein, with particular emphasis on cattle. These include: 1. Acrosome defects (knobbed, ruffled and incomplete); 2. Head defects (abnormal condensation, decapitated, round head, rolled head, nuclear crest); 3. Midpiece abnormalities ("Dag" defect, "corkscrew" defect, "pseudo-droplet" defect); 4. Tail defects ("tail stump" defect, primary ciliary dyskinesia).
منابع مشابه
O-36: Evaluation of Genetic Variations in Intron 4 and Exon 5 of RABL2B Gene in Infertile Men with Oligoasthenoteratospermia and Immotile Short Tail Sperm Defects
Background One of the main causes of male infertility is defect in structure and function of sperm cells. Infertile men with oligoasthenoteratospermia (OAT) defect, have sperms with abnormalities in count, motility and morphology. Patients with immotile short tail sperm (ISTS) disorder have immotile short-tailed sperm with disorganized axonem, and a significant decrease in sperm counts. Numerou...
متن کاملGenetic sperm defects and consanguinity.
BACKGROUND The existence of a genetic component to human infertility has been suggested, although neither the specific abnormalities involved, nor their genetic mechanism of transmission, are currently defined. We have examined, by transmission electron microscopy (TEM), ejaculate from 1600 males with fertility problems. Among the subjects studied, we focused on a group of patients whose family...
متن کاملP-133: Investigation of Genetic Variations in Exon 6 of AKAP4 Gene in Infertile Men with Immotile Short Tail Sperm
Background The immotile short tail sperm (ISTS) defect is one of the disorders that cause male infertility. Men with this condition have immotile short-tail sperm with structural defects in the fibrous sheath(FS). A Kinase Anchoring Protein 4 (AKAP4) is one of the most abundant proteins in the fibrous sheathof sperm flagella and provides scaffold for the correct assembly of FS.Since exon 6 of A...
متن کاملDiagnosis of genetic defects through parallel assessment of PLCζ and CAPZA3 in infertile men with history of failed oocyte activation
Objective(s): Phospholipase C ζ (PLCζ) is considered as a nominee for sperm associated oocyte activating factors and is located back-to-back with CAPZA3, an actin-capping protein controlling actin polymerization during spermiogenesis. They contain a common bidirectional promoter. The objective of this study was to identify individuals with parallel low expression of PLCζ and CAPZA3 mRNA, in hop...
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ورودعنوان ژورنال:
- Theriogenology
دوره 64 3 شماره
صفحات -
تاریخ انتشار 2005