a mature male germ cell, the specific output of the testes, which fertilizes the mature ovum (secondary oocyte) in sexual reproduction. It is microscopic in size, looks like a …
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Current approaches for DNA extraction and fragmentation from mammalian spermatozoa provide several challenges for the investigation of the oxidative stress burden carried in the genome of male gametes. Indeed, the potential introduction of oxidative DNA damage induced by reactive oxygen species, reducing agents (dithiothreitol or beta …
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In pig spermatozoa, piRNAs have been annotated to sperm morphology, spermatogenesis, acrosomal reaction, sperm hyperactivation, and male fertility (Ablondi …
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The goal of this study is to identify hub genes that might affect biomarkers related to spermatogenesis. Using the clinically significant transcriptome and single-cell sequencing data sets on the …
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Abstract. A spermatozoon is a male germ cell capable of fertilizing an oocyte and carries genetic information for determining the of the offspring. It comprises autosomes and an X (X spermatozoa) or a Y chromosome (Y spermatozoa). The origin and maturation of both X and Y spermatozoa are the same, however, certain differences …
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Introduction. Infertility is a multifactorial problem; a majority of infertility cases are idiopathic and molecular exploration on spermatozoa, and seminal plasma revealed that 50% of such problems were associated with a male partner ().Male fertility assumes much significance in dairy animals because semen from a single male is used to …
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Sperm chromatin decondensation at the right time is essential for the zygote formation and reduced condensation may predispose sperm DNA to oxidative damage. Royere and colleagues observed abnormal 'overcondensation' of the chromatin after cryopreservation via acridine orange staining and Feulgen DNA cytophotometric studies …
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The effects of stress hormones on spermatozoa functionality (% acrosome-reacted-spermatozoa) were followed after incubation of spermatozoa with adrenaline (10 μM, 100 μM) or hydrocortisone (50 ...
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the percentage of spermatozoa moving forward in the field of view under a microscope with a magnification of 10x. The percentage of abnormal spermatozoa was assessed by William's stain. Spermatozoa morphology was observed by using a microscope magnification of 100x. Abnormalities of spermatozoa were calculated from a
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Human fertilization begins when a capacitated spermatozoon binds to the zona pellucida (ZP) surrounding a mature oocyte. Defective spermatozoa-ZP interaction contributes to male infertility and is a …
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This article addresses the importance of oxidative processes in both the generation of functional gametes and the aetiology of defective sperm function. Functionally, sperm capacitation is recognized as a redox-regulated process, wherein a low level of reactive oxygen species (ROS) generation is intimately involved in driving such events …
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Single human spermatozoa. This page introduces spermatogenesis the development of spermatozoa, the male haploid gamete cell. In humans at puberty, spermatozoa are produced by meiosis in the seminiferous tubules of the testis (male gonad). A second process of spermiogenesis leads to change in cellular organisation …
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The spermatozoa of man conform in general to the distinctive design of spermatozoa in other eutherian mammals, but certain characteristics set human spermatozoa apart. In flat profile, the sperm head is reminiscent of a dumbbell, it has no perforatorium, and its protamine contains only approximately 8 mol% cysteine compared …
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The meaning of SPERMATOZOON is a motile male gamete of an animal usually with rounded or elongate head and a long posterior flagellum.
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Introduction. Nutrition manipulation has been shown to improve bull welfare [] and to induce a beneficial impact on semen quality.Feed enrichment with polyunsaturated fatty acids (PUFAs) altered the fatty acid composition of bull spermatozoa and improved the semen quality [].Among the PUFAs, the essential fatty acids cannot be synthesized de …
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Introduction. In mammals, vast numbers of spermatozoa are deposited in the lower reproductive tract during coitus. In some species such as laboratory rodents and pigs, the fertilizing spermatozoa are sequestered in the isthmic region of the oviduct until ovulation begins [1, 2].It is known that only a small fraction of these spermatozoa is …
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A spermatozoon is a male germ cell capable of fertilizing an oocyte and carries genetic information for determining the of the offspring. It comprises autosomes and an X (X spermatozoa) or a Y chromosome (Y spermatozoa). The origin and maturation of both X and Y spermatozoa are the same, however, certain differences may exist. Previous …
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A spermatozoon (in plural spermatozoa) is a motile sperm cell, that is, the reproductive cell of human males, carried in semen, that fertilizes the ovum to create a …
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A total of 48 lipid molecular species were significantly altered between normozoospermic and asthenozoospermic spermatozoa. Furthermore, the levels of total GM3 and six GM3 molecular species, which were altered in normozoospermic spermatozoa versus asthenozoospermic spermatozoa, were inversely correlated with sperm …
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To characterize the proteomic alterations to sperm during epididymal maturation, we isolated highly enriched populations of functionally immature and mature spermatozoa from the caput (proximal) and cauda (distal) segments of the mouse epididymis, respectively (Figure S1 A).To differentiate epididymal-driven changes to the …
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Human zona pellucida (ZP) matrix is composed of four glycoproteins designated as ZP glycoprotein -1 (ZP1), -2 (ZP2), -3 (ZP3), and -4 (ZP4). Mutations in the genes encoding human ZP glycoproteins are one of the causative factors leading to abnormal ZP matrix and infertility in women. Relevance of the human ZP glycoproteins in …
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In summary, the present study confirmed the feasibility of SAGE investigation into the spermatozoal transcriptome, revealing large quantity transcripts of constant …
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spermatozoa: [ sper″mah-to-zo´on ] (pl. spermatozo´a ) ( Gr. ) a mature male germ cell, the specific output of the testes, which fertilizes the mature ovum (secondary oocyte ) in sexual reproduction . It is microscopic in size, looks like a translucent tadpole, and has a flat elliptical head containing a spherical center section, and a long ...
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Spermatozoa meaning in Bengali - শুক্রাণু; ; sperm; | English – Bangla & English (E2B) Online Dictionary. ইংরেজি - বাংলা Online অভিধান। Providing the maximum meaning of …
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