Results 51 to 60 of about 2,944,740 (334)

Analysis of epididymal sperm from Korean native bull (Hanwoo) aged at 8 and 15 months before freezing and after thawing

open access: yesJournal of Animal Reproduction and Biotechnology, 2016
The recovery of epididymal sperm in animals is considered as one of the important tools to preserve high value or endangered species. However, there are no appropriate castrating indicators such as months of age in bull, sperm morphology, and motility ...
Sung-Sik Kang   +11 more
doaj   +1 more source

Identification of Fis1 Interactors in Toxoplasma gondii Reveals a Novel Protein Required for Peripheral Distribution of the Mitochondrion [PDF]

open access: yes, 2020
Toxoplasma gondii’s single mitochondrion is very dynamic and undergoes morphological changes throughout the parasite’s life cycle. During parasite division, the mitochondrion elongates, enters the daughter cells just prior to cytokinesis, and undergoes ...
Arrizabalaga, Gustavo   +2 more
core   +1 more source

The correlation of sperm morphology with unexplained recurrent spontaneous abortion: A systematic review and meta-analysis

open access: yesOncoTarget, 2017
Sperm morphology displays a potential impact on sperm function and may ultimately impact reproductive function. Current studies have investigated the correlation between sperm morphology with unexplained recurrent spontaneous abortion (RSA) but have ...
Xiaodan Cao   +5 more
semanticscholar   +1 more source

Multi‐omics and low‐input proteomics profiling reveals dynamic regulation driving pluripotency initiation in early mouse embryos

open access: yesFEBS Open Bio, EarlyView.
Mouse pre‐implantation development involves a transition from totipotency to pluripotency. Integrating transcriptomics, epigenetic profiling, low‐input proteomics and functional assays, we show that eight‐cell embryos retain residual totipotency features, whereas cytoskeletal remodeling regulated by the ubiquitin‐proteasome system drives progression ...
Wanqiong Li   +8 more
wiley   +1 more source

In-vitro application of pentoxifylline preserved ultrastructure of spermatozoa after vitrification in asthenozoospermic patients [PDF]

open access: yes, 2017
PURPOSE: To evaluate the effect of in vitro application of pentoxifylline (PX) on sperm parameters and ultrastructure after vitrification in asthenozoospermic patients. MATERIALS AND METHODS: A total of 30 asthenozoospermic semen samples (aged 25-45
Khalili, Ma   +7 more
core  

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

open access: yesFEBS Open Bio, EarlyView.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer   +7 more
wiley   +1 more source

Decline of Sperm Quality over the Last Two Decades in the South of Europe: A Retrospective Study in Infertile Patients

open access: yesBiology, 2022
Semen quality has a direct relation to male fertility. Whether sperm variables in humans have decreased over the last years is still uncertain, with some studies showing a decline and others reporting no changes.
Emma Garcia-Grau   +7 more
doaj   +1 more source

Contribution of Bacterial Infection to Male Infertility in Nigerians [PDF]

open access: yes, 2009
There is disagreement as to the influence of certain microbial infection on male infertility and such agents are ignored. The incidence of these microbial agents in seminal fluid isolates is on the increase.
Emokpae, MA, Sadiq, NM, Uadia, PO
core   +1 more source

Importance of sperm morphology during sperm transport and fertilization in mammals

open access: yesAsian Journal of Andrology, 2016
After natural or artificial insemination, the spermatozoon starts a journey from the site of deposition to the place of fertilization. However, only a small subset of the spermatozoa deposited achieves their goal: to reach and fertilize the egg.
F. García-Vázquez   +3 more
semanticscholar   +1 more source

Our experience in sperm morphology assessment [PDF]

open access: yesAsian Journal of Andrology, 2010
We read with great interest the article recently published by Menkeveld et al.1 as we have a double interest in sperm morphology assessment. The first one as a Clinical Andrology Laboratory (Laboratory of Male Fertility, Department of Clinical Biochemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Argentina) attempting to give ...
Julia Irene, Ariagno   +7 more
openaire   +2 more sources

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