abnormal sperm
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Author(s):  
Zahra Ait Yachou ◽  

It is already well established that the percentage of normal sperm and specific sperm abnormalities has diagnostic value in vivo. The spermocytogram is an important part of the analysis of human semen, this kind of analysis, simple at first sight, brings real difficulties because the results from one laboratory to another are very relatively reliable. When analyzing abnormal sperm morphology, the observer has to estimate the respective size of the different spermatozoa or their components, the length of all the spermatozoa (too small or too big) and to identify the shape (sperm with a coiled flagellum, or no flagellum as an example). The objective of our work is first of all to make a comparative study of the results of the morphological evaluation of 50 semen samples between the manual technique versus the automated one (SCA) in order to find a possible correlation between these two techniques. According to the analytical stage of the manual and automatic results, the two latter led us to obtain significantly different percentages.


Author(s):  
Yangyang Wu ◽  
Xin Zhang ◽  
Xi Zhang ◽  
Siyu Liu ◽  
Jintao Zhang ◽  
...  

Abstract Sperm is the ultimate executor of male reproductive function. Normal morphology, quantity, and motility of sperm ensure the normal reproductive process. Palmitoylation is a posttranslational modification mediated by palmitoyltransferases whereby palmitoyl is added to proteins. Seven palmitoyltransferases have been identified in Saccharomyces cerevisiae and 23 in humans (including ZDHHC1–9 and ZDHHC11–24), with corresponding homologs in mice. We identified two testis-specific palmitoyltransferases ZDHHC11 and ZDHHC19 in mice. The Zdhhc11 and Zdhhc19-knockout mouse models were constructed, and it was found that the Zdhhc11 knockout males were fertile, while Zdhhc19 knockout males were sterile. ZDHHC19 is located in the cell membrane of step 4–9 spermatids in the mouse testis, and phenotypic analysis showed that the testicular weight ratio in the Zdhhc19−/− mice decreased along with the number and motility of the sperm decreased, while sperm abnormalities increased, mainly due to the “folded” abnormal sperm caused by sperm membrane fusion, suggesting the involvement of ZDHHC19 in maintaining membrane stability in the male reproductive system. In addition, Zdhhc19−/− mice showed abnormal sperm morphologies and apoptosis during spermatogenesis, suggesting that spermatogenesis in the Zdhhc19−/− mice was abnormal. These results indicate that ZDHHC19 promotes membrane stability in male germ cells. Summary sentence: ZDHHC19 is located in the cell membrane of Step4–9 spermatids in mouse testis; Zdhhc19 knockout mice showed male infertility, abnormal spermatogenesis, sperm morphology and motility.


2021 ◽  
Vol 20 (3) ◽  
Author(s):  
S.I. Ukraіnska ◽  
O.M. Kaluynikova ◽  
T.V. Blashkiv

Purpose - to estimate the disorder of spermatogenesis under conditions of experimentalchronic kidney disease (EChD).Material and methods. The study was carried out in two series of experiments on malemice with EChD, the model of which was created by immunizing animals with a kidneyhomogenate. The first series of experiments was devoted to the study of: sperm count(sperm concentration (mln / ml)) and the number of abnormal sperm forms; the ratio ofcells of different generations of spermatogenic epithelium (%) in the testes; pathways ofcell death of cells of the testes and epididymis (spermatocytes (primary) and spermatozoa).The fertile qualities of males were assessed in the second series of experiments, afterreplanting them to intact females. Pre- and post-implantation embryonic mortality andthe number of living fetuses per female mouse have been investigated. The research resultswere compared with the performance of animals in the control groups for each series.Results. No significant changes in the number of spermatozoa were found under EChDconditions (p> 0.05). An increase in the number of abnormal spermatozoa (22%) andthose with primary abnormalities (p <0.05) was found. Among the generations of testescells, a decrease in the number of spermatids and living spermatocytes (primary) (15%)was established, with an increase in the number of cells with apoptosis and necrosisamong them (p <0.05). The number of living cells of the epididymis (spermatozoa) alsodecreased (17.8%), with the growth of cells with apoptosis and necrosis among them (p<0.05). There was an increase in the pre- and post-implantation mortality of embryos (p<0.05); decrease in the number of living fetuses (p <0.05).Conclusions. Under conditions of four-time treatment with renal homogenate (EChD)there is a disorder of spermatogenesis in male mice. Experimental model of kidneydamage, proposed by us, can be useful for studying other aspects and consequences ofkidney pathology, and both for establishment of the features and detection of possiblepathogenetic links in the development of spermatogenesis disorder under conditions ofchronic kidney disease and search of the effective ways to correct it in future.


AYUSHDHARA ◽  
2021 ◽  
pp. 3566-3573
Author(s):  
Nagendra Chary.M ◽  
Lalitha B.R ◽  
T.Anil Kumar

Male reproductive health depends upon the normal structures and functions of Shukrava srotas. Shukra is composed of both sperm and semen and considered one of the important factors for fertilization. It is stated as Phalavat shukra. Preceptors of Ayurveda have described eight types of Shukra dosha and their treatments. Low sperm count, decrease sperm motility, abnormal sperm morphology, ejaculatory problems, sexual dysfunctions, environmental exposures (radiation, pollution, and stress etc), lifestyle habits (smoking, alcohol, recreational drugs etc), varicocele, hormonal imbalances, DNA damage, and reactive oxygen species (ROS) etc are causative factors for Male infertility. Thousands of years back, ancient system of medicine has mentioned the word Purusha vandya (male infertility) and different pharmacological activities, medicinal formulas, therapies to treat sperm disorders, semen impairments, and sexual dysfunctions. Vajeekarana is one of the special branches of Astanga Ayurveda which maintains the fertility and management of male infertility. Shukrala, Shukra janana, Shukra shodhana, Shukra rechaka, Shukra pravataka and Shukra sthambhaka etc., are the pharmacological activities mentioned to treat Shukradoshas. Shukrala karma mainly composed of Shukra vrudhikara and Shukra srutikara means which enhances the Shukra (semen and sperm) quantitatively and qualitatively and facilitates its ejaculation. Therefore, an attempt has been made to establish the concept of Shukrala karma and its therapeutic applicability in the management of male infertility.


Animals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3266
Author(s):  
Osman Ahmed ◽  
Khoboso Lehloenya ◽  
Masindi Mphaphathi ◽  
Abubeker Hassen

We investigated the supplementation effects of Acacia mearnsii tannin extract (TE) and encapsulated tannin extract (ETE) on reproductive performance and oxidative status of South African Mutton Merino rams. We also observed the season effect on the testicular measurements. Thirty rams were divided into five groups: 0.0 g TE (control), 1.5 g TE, 3 g TE, 1.5 g ETE, and 3 g ETE supplemented daily for 16 weeks transiting from autumn to winter. Bodyweight and testicular measurements were recorded biweekly. Semen and blood samples were collected weekly during the last five weeks of supplementation. Results showed that the increase in the ETE from 1.5 to 3 g increased the testicular length and sperm concentration, as well as decreased the percentages of low and non-progressive spermatozoa (p<0.05). Simultaneously,the increase in the TE from 1.5 to 3 g decreased semen volume and elevated the percentage of abnormal sperm (p<0.05). The results suggest that the encapsulation of TE affords the maximum benefit of the TE on the sperm quality. Treatments did not affect the hormonal and oxidative status. Testicular measurements were significantly higher in autumn compared to winter. The plasma level of cortisol significantly correlates negatively with sperm motility, viability, and acrosome integrity.


Author(s):  
Kaushal Kusum ◽  
Ramakrishna Roy ◽  
Vijay B. Sharma ◽  
Raghavendra Prasad Mishra ◽  
Neha Singh

Background: Different cryoprotectants had been used for safe gaurding the post thaw Canine sperm cell motility. Glycerol and ethylene glycol may be used as cryoprotectants. However, scanty reports are available on use of different concentrations of glycerol, ethylene glycol and the combination of glycerol and ethylene glycol as cryoprotectants for canine spermatatozoa. Methods: In present study, the semen samples were collected from 4 different adult spitz male dogs. The diluted semen was divided into four aliquots, Group I: 8% glycerol (control); Group II: 4% glycerol; Group III: 5% ethylene glycol; Group IV: 4% glycerol + 4% ethylene glycol. Result: The result showed that post-thaw sperm motility in canine semen with 5% ethylene glycol was recorded as 36.83±1.26%. For Group I (8% glycerol) and Group II (4% glycerol), the same was 34.25±0.95% and 26.50±0.81%, respectively whereas Group IV (4% glycerol + 4% ethylene glycol) it was 29.25%. However, there was no significant correlationship between abnormal sperm count and live spermatozoa; abnormal sperm count and dead spermatozoa; dead spermatozoa and DNA integrity and in between HOST (hypo-osmotic swelling test) and acrosomal integrity of spermatozoa.


2021 ◽  
Author(s):  
Shan Huang ◽  
Huiling Wu ◽  
Yunwei Qi ◽  
Liqiang Wei ◽  
Xiaodan Lv ◽  
...  

Abstract We describe the first case of two chromosomal abnormalities, balanced reciprocal translocation t(17;22)(p11.2;q11.2) and a microduplication in the region 10q23.31, in an infertility man suffering from teratospermia. Several genes located on the translocation breakpoints or the region of duplication show rich expression in the tissue of testis. They have been reported to be associated with developmental disorder and retardation, which might also be the risk factors affecting in spermatogonial differentiation and spermatogenesis. More studies should be carried out for identifification of new genes associated with semen quality. Our case might support the opinion that haploinsufficiency of the testis-expressed gene could be the cause of sperm immotility and abnormal sperm morphology. The two chromosomal abnormalities that carry additional reproductive risks, is apparently harmful with regard to the male infertility, and could contribute to the genomic instability resulting in disease.


2021 ◽  
Vol 116 (3) ◽  
pp. e282
Author(s):  
Eman Mohamed Hasanen ◽  
Manar Hozyen ◽  
Amira Hassan ◽  
Hanaa Ahmed Alkhader ◽  
Denny Sakkas ◽  
...  

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