Results 51 to 60 of about 16,246 (249)
BMC Molecular and Cell Biology, 2021 Background Although bacterial infections have been recognized as a possible cause of male infertility, the effect of bacterial infections on sperm quality and sperm DNA fragmentation remains controversial.
Fatemeh Eini +5 more
doaj +1 more source
Guidelines on sperm DNA fragmentation testing [PDF]
Translational Andrology and Urology, 2017 Male factor subfertility is present in more than 50% of the couples treated with assisted reproductive techniques. Routine semen analysis provides information on semen volume as well as sperm concentration, motility, and morphology. Standardized methods have been published by the World Health Organization (WHO) (1).
openaire +2 more sources
Clinical usefulness of sperm DNA fragmentation testing [PDF]
Translational Andrology and Urology, 2017 The search for the best biomarker for the diagnosis of male infertility is more evident in recent years as conventional semen analysis is not always an optimal predictor of male fertility. Since the advent of the intra-cytoplasmic sperm injection (ICSI) for male factor infertility, the pace of research related to sperm functional assays has slowed down.
Varghese, Alex C. +3 more
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Advanced Science, EarlyView.We identify a Lepidoptera‐conserved testis‐specific arylalkylamine N‐acetyltransferase (LTNAT) that governs male moth fertility via a novel mechanism. LTNAT loss disrupts eupyrene sperm mitochondrial derivatives and impairs apyrene sperm motility, offering a safe molecular target for innovative pesticides and genetic pest control.
Hao Sun +5 more
wiley +1 more source
Zdravniški Vestnik, 2018 Background. To determine the relationship between sperm morphological abnormalities, DNA fragmentation and fertilization rate in IVF and ICSI. Methods. Sperm samples from 10 IVF and 20 ICSI cycles were analyzed.
Barbara Dariš, Veljko Vlaisavljević
doaj +1 more source
Effects of sperm preparation techniques on sperm survivability and DNA fragmentation
Journal of International Medical Research, 2022 Objective This study was performed to determine the effect of swim-up (SU) and density gradient centrifugation (DGC) on sperm survival and DNA fragmentation.
Minh Tam Le +5 more
doaj +1 more source
PSMA8‐Containing 20S Proteasome Regulates Spermiogenesis and Male Fertility
Advanced Science, EarlyView.PSMA8 assembles s20S proteasome that degrades specific substrates in elongating spermatids. Degradation of s20S‐substrates activates translation of FXR1‐target mRNAs, which are essential for mitochondrial sheath formation and sperm morphogenesis.
Huiwen Cao +7 more
wiley +1 more source
Risk factors associated with sperm DNA fragmentation [PDF]
Translational Andrology and Urology, 2017 Dr. Franco (1) in his commentary in response to the practice recommendations by Agarwal et al . (2) provides information on several important aspects of sperm DNA fragmentation (SDF), especially the impact of paternal age, overweight and varicocele; and finally the author concluded by listing the current limitations of SDF tests.
Agarwal, Ashok +3 more
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Macrophage Extracellular Traps in Immunity and Cancer
Advanced Science, EarlyView.As a macrophage‐mediated innate defense mechanism, the dysregulated release of METs drives chronic inflammation and influences tumor progression. Furthermore, METs exhibit a functional duality within the tumor microenvironment, capable of both promoting and suppressing tumor development.
Junyao Li +5 more
wiley +1 more source
Ecological Adaptation Mechanisms Underlying Successful Plant Reproduction
Advanced Science, EarlyView.During floral induction, various environmental and endogenous signals converge to regulate the florigen protein, which is transported from leaves to the SAM to initiate flowering. Within the SAM, a complex network of receptor kinases and small peptides orchestrates floral development with high spatiotemporal precision.
Hang Zhao +8 more
wiley +1 more source