Results 121 to 130 of about 1,568,056 (388)

TRiC Is a Structural Component of Mammalian Sperm Axonemes

open access: yesCytoskeleton, EarlyView.
ABSTRACT The TRiC chaperonin is responsible for folding ~5%–10% of the proteome in eukaryotic cells. Our recent cryo‐electron microscopy studies of axonemes from diverse mammalian cell types led to the surprising discovery that a fully assembled TRiC chaperonin is a structural component of mammalian sperm flagella, where it is tethered to the radial ...
Alan Brown   +3 more
wiley   +1 more source

Is semen analysis without strict criteria misleading decisions in IVF? A prospective systematic study

open access: yesInternational Journal of Reproductive BioMedicine, 2018
Background: Sperm morphology has been strongly linked to fertilization. This makes it an important component in semen analysis. They are usually assessed by world health organization (WHO) standard or Kruger strict criteria in in-vitro fertilization (IVF)
Faduola Paul   +2 more
doaj  

Impact of alcohol on male reproductive hormones, oxidative stress and semen parameters in Sprague–Dawley rats

open access: yesMiddle East Fertility Society Journal, 2015
Objective: To investigate the impact of alcohol on the reproductive hormones, oxidative stress and semen parameters. Design: This is an experimental animal study.
A.A. Oremosu, E.N. Akang
doaj   +1 more source

Influence of Long-term Ingestion of Garcinia Kola Seed Diet on Sperm Count, Sperm Motility, and Fertility in the Wistar Rat [PDF]

open access: yes, 2013
The influence of long-term ingestion of Garcinia kola seed on the sperm count, sperm motility, and fertility was investigated in the rat. Twenty adult Wistar rats initially weighing between 150 and 160 g were randomly divided into 2 groups (A and B) of ...
A., Fischer, V.   +5 more
core   +1 more source

Conserved Phosphorylation of the Myosin1e TH1 Domain Impacts Membrane Association and Function in Yeast and Worms

open access: yesCytoskeleton, EarlyView.
ABSTRACT Cells have an intrinsic ability to rapidly respond to environmental change to regulate cell cycle progression and membrane organisation, thereby affecting cell growth and division. The actin cytoskeleton is a highly dynamic complex of proteins that can rapidly reorganise to change the growth pattern of a cell.
Holly R. Brooker   +7 more
wiley   +1 more source

Identifying windows of susceptibility to essential elements for semen quality among 1428 healthy men screened as potential sperm donors

open access: yesEnvironment International, 2021
Background: Essential elements such as iron (Fe), cobalt (Co), copper (Cu), zinc (Zn), selenium (Se), rubidium (Rb), strontium (Sr), and molybdenum (Mo) are necessary for reproductive health.
Heng-Gui Chen   +9 more
doaj  

The NLS3 Motif in TPX2 Regulates Spindle Architecture in Xenopus Egg Extracts

open access: yesCytoskeleton, EarlyView.
ABSTRACT A bipolar spindle composed of microtubules and many associated proteins functions to segregate chromosomes during cell division in all eukaryotes, yet both spindle size and architecture vary dramatically across different species and cell types.
Guadalupe E. Pena   +4 more
wiley   +1 more source

Real-Time Single Cell Monitoring: Measurement and Counting of Motile Sperm Using LCR Impedance-Integrated Microfluidic Device

open access: yesMicromachines, 2019
In this research, we aimed to count the ratio of the number of motile to immotile sperm for patients with infertility problems based on a low-sperm-concentration examination.
Chalinee Phiphattanaphiphop   +3 more
doaj   +1 more source

Strictures of the female reproductive tract impose fierce competition to select for highly motile sperm [PDF]

open access: yesarXiv, 2018
Investigating sperm locomotion in the presence of an external fluid flow and geometries simulating the female reproductive tract can lead to a better understanding of sperm motion during the fertilization process. In this study, using a microfluidic device featuring a stricture that simulates the biophysical properties of narrow junctions inside the ...
arxiv  

High-resolution 4D acquisition of freely swimming human sperm cells without staining [PDF]

open access: yesarXiv, 2020
We present a new acquisition method that enables high-resolution, fine-detail full reconstruction of the three-dimensional movement and structure of individual human sperm cells swimming freely. We achieve both retrieval of the three-dimensional refractive-index profile of the sperm head, revealing its fine internal organelles and time-varying ...
arxiv  

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