A5101478719- Sperm and Testicular Function
- Reproductive Biology and Fertility
- Reproductive biology and impacts on aquatic species
- Ovarian function and disorders
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- Reproductive Physiology in Livestock
- Molecular Biology Techniques and Applications
- Hormonal and reproductive studies
- Wildlife Ecology and Conservation
- Reproductive System and Pregnancy
- Seed Germination and Physiology
- Animal Genetics and Reproduction
- Animal Behavior and Welfare Studies
- Animal Virus Infections Studies
- Bee Products Chemical Analysis
- Ion channel regulation and function
- Selenium in Biological Systems
- Genetic and phenotypic traits in livestock
Universidad Antonio Nariño
2020-2024
University of Girona
2020-2021
University of Caldas
2016-2019
Clínica CES
2005
Yale University
2001
Hochschule Hannover
1979
The purpose of this study was to determine the association three proteins involved in sperm function on freezability porcine semen: heat shock protein 90 alpha (HSP90a), Niemann-Pick disease type C2 (NPC2), and lipocalin-type prostaglandin D synthase (L-PGDS). Six adult boars (each boar ejaculated times, 18 total) were classified by based percentage functionally competent sperm. male semen with highest (MHF) lowest (MLF) centrifuged immediately after collection separate seminal plasma...
Context Conventional sperm quality tests may not be sufficient to predict the fertilising ability of a given ejaculate; thus, rapid, reliable and sensitive are necessary measure function. Aims This study sought address whether cluster analysis approach based on flow cytometry variables could provide more information about Methods Spermatozoa were exposed either isotonic (300mOsm/kg) or hypotonic (180mOsm/kg) media for 5 20min, then stained with SYBR14 propidium iodide (PI). Based dot plots,...
During capacitation, sperm undergo a myriad of changes, including remodeling plasma membrane, modification motility and kinematic parameters, membrane hyperpolarization, increase in intracellular calcium levels, tyrosine phosphorylation certain proteins. While potassium channels have been reported to be crucial for capacitation mouse human sperm, their role pigs has not investigated. With this purpose, samples from 15 boars were incubated medium 300 min with quinine, general blocker...
The aim of this study was to determine the effect sperm and seminal plasma (SP) on freezability porcine semen. Semen eight commercial males from two farms in central-western region Colombia (four boars each farm) frozen tested select with high (MHF) low (MLF), according percentage functionally competent (FCS). Immediately after collection completed, SP selected were separated by centrifugation combine types sperm, incubate them for three hours then freeze them. variables evaluated were:...
This work aimed to establish whether the temperature humidity index (THI) under different intertropical zones affects retention of cytoplasmic droplets (CDs), sperm function and DNA integrity in boars. With this purpose, two separate studies were devised. In first one, 49 boars from six farms collected every 45 days (230 ejaculates). THI measured daily, parameters evaluated. Boars classified into three groups based on incidence ejaculates having more than 25% spermatozoa with CDs: persistent...
Inhalt: 55 Ejakulate cines asiatischen Wasserhuffels wurden nach der Ainitub-Methode ein-gefroren. Die durchschnittlichc Auftuurate tirtrug 62 % aktiu uorwartsbeweglicher Samenzellen. Von besonderer Redeutung war die so fortige Verdunnung des Samens zur Vermeidung irreuersibler Spermienagglutination und Aufliisung uon Protoplasmatropfen. Der Vergleich verschiedener Fixationsmedien Untersuchung Akrosommorphologie weist auf deren unterschiedliche Brauchbarkeit fur frisches gefrorenes Spermu...