Results 101 to 110 of about 2,944,740 (334)

Sperm trajectories form chiral ribbons. [PDF]

open access: yes, 2013
We report the discovery of an entirely new three-dimensional (3D) swimming pattern observed in human and horse sperms. This motion is in the form of 'chiral ribbons', where the planar swing of the sperm head occurs on an osculating plane creating in some
Choi, Inkyum   +5 more
core   +1 more source

Paternal Caffeine Exposure Programs Offspring Stress Vulnerability via Sperm Dlk1‐Dio3 Imprinting‐Directed Remodeling of a Novel Neural Circuit

open access: yesAdvanced Science, EarlyView.
The study elucidates that paternal preconception stress can drive offspring hyperresponsivity of the stress system via hypomethylation of a specific DNA region in sperm. This key link is confirmed in a cohort of prospective fathers: the epigenetic alteration is associated with elevated stress hormone levels.
Mengxi Lu   +10 more
wiley   +1 more source

Evolution of sperm morphology in anurans: insights into the roles of mating system and spawning location

open access: yesBMC Evolutionary Biology, 2014
BackgroundThe degree of postcopulatory sexual selection, comprising variable degrees of sperm competition and cryptic female choice, is an important evolutionary force to influence sperm form and function.
Yu Zeng, S. Lou, W. Liao, R. Jehle
semanticscholar   +1 more source

Natural Resistance to Ovarian Hyperstimulation Syndrome in Estrildid Finches Reveals Macrophage GPR183 as a Potential Therapeutic Target

open access: yesAdvanced Science, EarlyView.
Ovarian macrophage depletion reverses OHSS resistance in estrildid finches and exacerbates OHSS symptoms in rats. Activating macrophage GPR183 alleviates OHSS by reducing pro‐inflammatory factors, increasing immunomodulatory molecules, remodeling CD44/SDC4‐mediated communication, and restoring immune homeostasis.
Xiaofei Yan   +11 more
wiley   +1 more source

Effect of age on semen parameters in infertile men after varicocelectomy

open access: yesTherapeutics and Clinical Risk Management, 2011
Kamaleddin Hassanzadeh-Nokashty1, Parisa Yavarikia2, Alireza Ghaffari3, Samad Hazhir1, Mohammadali Hassanzadeh11Department of Urology, 2Faculty of Nursery and Midwifery, 3Department of Internal Medicine, Tabriz University of Medical Sciences, Tabriz ...
Hassanzadeh-Nokashty K   +4 more
doaj  

Design, Control, and Clinical Applications of Magnetic Actuation Systems: Challenges and Opportunities

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This review aims to provide a broad understanding for interdisciplinary researchers in engineering and clinical applications. It addresses the development and control of magnetic actuation systems (MASs) in clinical surgeries and their revolutionary effects in multiple clinical applications.
Yingxin Huo   +3 more
wiley   +1 more source

THE EFFECTS OF NICOTINE EXPOSURE PER INHALATION TO THE CHANGE OF MOTILITY AND MORPHOLOGY OF THE RAT’S SPERM

open access: yesJurnal Urologi Indonesia, 2019
Objective: Smoking are known to have detrimental effect on sperm. The effects are suspiciously come from nicotine as its main pharmacologic component. This study is carried out to analyze the effect of nicotine exposure per inhalation to the difference ...
Puruhito Eko Nugroho   +2 more
doaj   +1 more source

Reproductive physiology of the female cat [PDF]

open access: yes, 2003
Ovarian cyclicity induces considerable changes in morphology, physiology and function of the reproductive organs in animals. This thesis aimed to study reproductive physiology of the female domestic cat, focusing on the cervix, uterus and uterine tube ...
Chatdarong, Kaywalee
core  

MTCA‐Net: Multi‐Task Cascade Analysis Network for Real‐Time Sperm Quality Analysis

open access: yesAdvanced Intelligent Systems, EarlyView.
This article proposes MTCA‐Net, a multi‐task cascaded analysis network for real‐time sperm quality assessment in intracytoplasmic sperm injection. The framework integrates detection, tracking, and segmentation modules to jointly analyze sperm morphology and motility.
Jiajin Li   +10 more
wiley   +1 more source

The Comparison of HA Binding and Zeta Methods Efficiency in Selection of Sperm with Normal Morphology and Intact Chromatin

open access: yesمجله دانشکده پزشکی اصفهان, 2009
Background: Sperm selection for ICSI is based on morphology and motility, but these parameters may not relevant chromatin integrity. One of the sperm selection methods for ICSI is based on sperm functional characteristics.
Mohammad Reza Deemeh   +5 more
doaj  

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