Results 161 to 170 of about 740,952 (392)

Selenoproteins in mammalian spermatogenesis:role of the nuclear GPx4 [PDF]

open access: yes, 2011
The selenoprotein Phospholipid Hydroperoxide Glutathione Peroxidase (PHGPx/GPx4) is an enzyme unique among the various GPxs, because it is able to use protein thiols, beside glutathione, The GPx4 gene encodes for three isoforms having different ...
Maccari, Irene
core  

Soft Micromanipulation Robot for Real‐Time Adaptive Multimodal Operation

open access: yesAdvanced Science, EarlyView.
This manuscript proposes a soft micromanipulator robot (SMR) for “full‐angle” precision biomedical operations. Bio‐inspired SMR achieves omnidirectional motion, micrometer precision, and multimodal capabilities including aspiration, transfer, rotation, assembly, injection, and cutting.
Zhuowei Li   +8 more
wiley   +1 more source

Investigation on the Origin of Sperm DNA Fragmentation: Role of Apoptosis, Immaturity and Oxidative Stress

open access: yesMolecular Medicine, 2015
Sperm DNA fragmentation (sDF) represents a threat to male fertility, human reproduction and the health of the offspring. The causes of sDF are still unclear, even if apoptosis, oxidative assault and defects in chromatin maturation are hypothesized. Using
M. Muratori   +7 more
semanticscholar   +1 more source

Effect of Neem Oil on Sperm Mitochondrial Activity [PDF]

open access: yes, 2010
It is a known fact that neem oil has some effect on motility of sperm. Motility of sperm depends on mitochondrial activity present in mid-piece of sperm.
Gaikwad, RD   +3 more
core  

Micro/Nanorobots for Combating Brain Disorders: Challenges, Advances, and Perspectives

open access: yesAdvanced Science, EarlyView.
Micro/nanorobots (MNRs) offer a transformative approach for precision therapy in brain disorders. By overcoming biological barriers and enabling controlled propulsion, targeted delivery, and real‐time imaging/tracking, MNRs pave the way toward effective, minimally invasive treatments. This review outlines the interplay between brain disease challenges,
Qi Zhang, Dong Sun
wiley   +1 more source

Sperm selection in natural conception: what can we learn from Mother Nature to improve assisted reproduction outcomes?

open access: yesHuman Reproduction Update, 2015
BACKGROUND In natural conception only a few sperm cells reach the ampulla or the site of fertilization. This population is a selected group of cells since only motile cells can pass through cervical mucus and gain initial entry into the female ...
D. Sakkas   +3 more
semanticscholar   +1 more source

DNA fragmentation index (DFI) as a measure of sperm quality and fertility in mice. [PDF]

open access: yes, 2020
Although thousands of genetically modified mouse strains have been cryopreserved by sperm freezing, the likelihood of cryorecovery success cannot be accurately predicted using conventional sperm parameters.
Li, Ming-Wen, Lloyd, KC Kent
core   +1 more source

Sperm DNA and detection of DNA fragmentations in sperm [PDF]

open access: yesTürk Üroloji Dergisi/Turkish Journal of Urology, 2018
The questionable effectiveness of routine sperm parameters in determining male factor infertility problems and increasing the success rates of assisted reproductive techniques have led to the investigation of more detailed sperm parameters that could affect the male fertility and reproduction.
openaire   +3 more sources

Surgical Procedure of Lateral Lymph Node Dissection for Advanced Lower Rectal Cancer

open access: yesAnnals of Gastroenterological Surgery, EarlyView.
Lateral lymph node dissection (LLND) is an effective surgical approach for lower rectal cancer. This paper outlines key points from the Japan Society of Gastroenterological Surgery consensus meeting, including standardized LLND techniques and procedural highlights.
Mamoru Uemura   +9 more
wiley   +1 more source

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