Results 61 to 70 of about 19,776 (295)

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, Qianting Zhang, Wei Xu, Anxuan Fang, Haomang Xu, Cheng Qiu, Lugeng He, Chao Yu   +7 more
wiley   +1 more source

Fragmentation dynamics of frozen-thawed ram sperm DNA is modulated by sperm concentration [PDF]

, 2010
This study investigated the hypothesis that post-thaw incubation of ram sperm at high concentrations results in a faster rate of DNA fragmentation than when sperm are incubated at a lower concentration.
Gosalvez, J., Lopez-Fernandez, C., R.J. Wilson, Fernandez, J. L., J. Gosálvez, C. López-Fernández, S.D. Johnston, Johnston, S. D., Wilson, R. J., J.L. Fernández   +9 more
core   +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, Shenghui Huo, Yue Xing, Shuxin Zhang, Guilin Li, Yihui Liu, Chongyang Jin, Fuguang Li, Xiaoyang Ge   +8 more
wiley   +1 more source

Evidence based sperm DNA fragmentation [PDF]

Translational Andrology and Urology, 2017
Male factor infertility is an important and current issue in the field of human reproduction. The prevalence of male factor associated infertility is increasing with almost 50% of all cases of fertility treatments being linked to this factor (1). Moreover, the introduction of intracytoplasmic sperm injection (ICSI) in 1992 (2) offered, for patients ...
openaire   +2 more sources

Sperm DNA fragmentation assay by sperm chromatin dispersion (SCD): correlation between DNA fragmentation and outcome of intracytoplasmic sperm injection [PDF]

Reproductive Medicine and Biology, 2013
AbstractPurposeThe aim of the present study was to investigate the relationship between sperm DNA fragmentation index (sDFI) and outcome of intracytoplasmic sperm injection (ICSI).MethodsAll the patients were divided into two groups based on sperm DNA fragmentation analysis by the sperm chromatin dispersion (SCD) method. A total of 237 patients were in
T, Sivanarayana, Ch, Ravi Krishna, G, Jaya Prakash, K M, Krishna, K, Madan, G, Sudhakar, G A, Rama Raju   +6 more
openaire   +2 more sources

Sperm DNA fragmentation and male subfertility [PDF]

, 2012
The aims of the present study were to investigate whether: 1. There is a difference in sperm DNA fragmentation between subfertile men and fertile controls. 2. Sperm DNA fragmentation differs among men with different causes of subfertility. 3.
Κανταρτζή, Περσεφόνη-Δήμητρα, Kantartzi, Persefoni-Dimitra   +1 more
core   +1 more source

Redox‐Dependent Chaperoning of GBF1 Condensates Regulates Seed Germination in Arabidopsis

Advanced Science, EarlyView.
In dormant seeds (low ROS), GBF1 forms liquid condensates to repress the germination gene CathB3, and the chaperone GIP1 maintains condensate liquidity and repressive activity. Upon imbibition (high ROS), ROS oxidize GIP1 during germination, impairing its chaperone function.
Yunying Wang, Xiaofeng Fang
wiley   +1 more source

Influence of Bacteriospermia, Host and Lifestyle Factors on Sperm DNA Integrity: A Cross-Sectional Study Based on a Fertility Center of Nepal

Journal of Family and Reproductive Health
Objective: To determine the sperm DNA fragmentation in the semen of suspected sub-fertile men of Nepal and find its association with bacteriospermia demographic and lifestyle factors. Materials and methods: A cross-sectional study was conducted with the
Anima Shrestha, Dev Raj Joshi, Dijan Vaidya, Sanu Maiya Shrestha, Anjana Singh   +4 more
doaj   +1 more source

Effect of microsurgical varicocelectomy on sperm DNA fragmentation in infertile men

Middle East Fertility Society Journal, 2011
Objectives: To examine the effect of microsurgical varicocelectomy on the sperm DNA damage in infertile men. Setting: Private clinical practice. Design: Prospective study.
Sherif Ghazi, Howida Abdelfattah
doaj   +1 more source

The correct interpretation of sperm DNA fragmentation test [PDF]

Translational Andrology and Urology, 2017
We read the commentary by Dr. Ferlin with interest (1). The author first stated the drawbacks of semen analysis in the diagnosis of male infertility and the need for sperm function tests. It is followed by illustrating the limitation of the current evidence in supporting the routine use of sperm DNA fragmentation (SDF) testing in clinical practice.
Cho, Chak-Lam, Agarwal, Ashok, Majzoub, Ahmad, Esteves, Sandro C.   +3 more
openaire   +2 more sources