A5102027740- Reproductive Biology and Fertility
- Sperm and Testicular Function
- Philosophy and History of Science
- Reproductive biology and impacts on aquatic species
- History and advancements in chemistry
- Ethics and bioethics in healthcare
- Neuroethics, Human Enhancement, Biomedical Innovations
- Memory, violence, and history
- Psychology Research and Bibliometrics
- Psychological Treatments and Disorders
- Reproductive Physiology in Livestock
- Social Sciences and Policies
- Literary and Cultural Studies
- LGBTQ Health, Identity, and Policy
- Employment, Labor, and Gender Studies
- Chemistry and Chemical Engineering
- Educational Innovations and Technology
- Sexual Differentiation and Disorders
- Gastric Cancer Management and Outcomes
- Educational Technology in Learning
- Historical Studies in Science
- Phonocardiography and Auscultation Techniques
- Education in Rural Contexts
- Reproductive Health and Technologies
- Philosophical Thought and Analysis
Institute of Astronomy and Space Physics
2019-2024
University of Buenos Aires
2013-2024
Consejo Nacional de Investigaciones Científicas y Técnicas
2011-2021
Centro Científico Tecnológico - Tucumán
2020
Instituto de Filosofía
2020
Politecnica Salesiana University
2013
National University of Misiones
2012
Summary. In order to correlate functional and biochemical parameters, frozen bovine sperm samples presenting diverse motility were studied. Specimens collected from four bulls (A, B, C D) graded according motile spermatozoa percentage vigour, regarding the sample bull A as highest motility, those B of intermediate that D low motility. evaluate lipid peroxidation enhanced by addition sodium ascorb-ate ferrous sulphate, thiobarbituric acid reactive substances (TEARS) measured. Values 0.34 ±...
Abstract This report investigates the mechanisms by which heparin induces capacitation of sperm. Capacitation was determined with chlortetracycline and intracellular calcium concentration, [Ca2+]i, FURA 2‐AM. Atter 15 minutes incubation heparin, [Ca2+]i increased 60% over basal, reaching a plateau thereafter. Sixty percent entry inhibited methoxy‐verapamil, suggesting that activation voltage dependent channels (VDCC) may be involved in process. A significant correlation (R2 = 0.88,...
En el presente artículo nos proponemos argumentar en favor de una concepción procesual la identidad persona enferma. Para ello, recorreremos algunas las principales respuestas que ha dado filosofía a pregunta por personal, así como ciertas propuestas sobre cómo concebir enfermedad y A partir adopción un enfoque ontología, pondremos foco interpretación procesual-relacional no dualista los organismos biológicos.
Summary. An increase in intracellular calcium is essential to trigger capacitation and the acrosome reaction. The aim of this study was determine progesterone effect mediated by voltage-dependent channel protein kinase C on heparin-capacitated noncapacitated spermatozoa. Protein activated 1-oleoyl-2-acetyl glycerol, a membrane-permeant diacyl-glycerol, inhibited GF-109203X. percentage true reaction evaluated using differential-interferential optical contrast microscopy trypan blue stain....
Sperm catabolic processes produce energy for capacitation and acrosome reaction induction required oocyte fertilization. The aim was to determine metabolic enzymes' activities their participation in the supply of generation redox state acquire fertilizing capacity. Capacitation induced with heparin quercetin, progesterone. Enzymatic were determined spectrophotometrically. chlortetracycline differential–interferential contrast microscopy/tryptan blue techniques used evaluate reaction,...
The generation of reactive oxygen species (ROS) is associated with some factors such as oxidative substrate sources, mitochondrial function and NAD(P)H oxidase activity. In bovine spermatozoa, heparin capacitation produces a respiratory burst sensitive to diphenyleneiodonium (DPI). Creatine kinase (CK) related extramitochondrial ATP disponibility. Our purpose was determine the variation in ROS level its relation DPI CK participation, involved redox state energy capacitation....
The aim of this research was to evaluate two different diluents for sperm cryopreservation and study functional parameters in relation the response heparin, lysophosphatidylcholine progesterone, frozen-thawed semen fallow deer (Dama dama) during reproductive season (brama). In way, can be used as a biological model endangered cervids. Semen obtained by electroejaculation. Heparin, progesterone were capacitation acrosome reaction inducers, respectively. Capacitation evaluated...
Contents The aim of this research was to study the effect hyaluronic acid on bovine cryopreserved spermatozoa compared with heparin as regards variation capacitation induction, cellular oxidative metabolism and intracellular signal induced by membrane‐associated adenylate cyclase propose a inductor. Heparin or lysophosphatidylcholine were used induce sperm acrosome reaction, respectively. 2′,5′‐dideoxyadenosine inhibitor. highest percentages capacitated live integrity obtained incubating for...
Contents Our aim was to evaluate the effect of Sephadex filtration on respiratory activity porcine spermatozoa and its relation with quality functional sperm parameters. Samples were evaluated regarding oxygen uptake parameters: motility, plasma acrosome membrane integrity, capacitation reaction induction in vitro, functionality, determined by hypo‐osmotic swelling test ( HOST ), lipid peroxidation assessed thiobarbituric acid assay. improved all routine parameters (motility, integrity) ,...
<p>En el nivel superior no puede pasar inadvertido desafío que propone escenario educativo actual en cual convergen variables asociadas a numerosas transformaciones rol asumen docentes y alumnos, los modos de aprender, las formas compartir comunicar conocimiento, tiempos espacios aprendizaje sucede. Una multiplicidad acciones pedagógicas innovadoras hoy es posible con aprovechamiento nuevos medios, recursos entornos tecnologías digitales han puesto disposición la enseñanza, podrían...
Como resultado de las luchas disidencias sexogenéricas se han aprobado leyes en todo el mundo que garantizan reconocimiento identidades generizadas. La Ley Identidad Género argentina (2012) ofrece una definición “identidad género” opuesta a los enfoques biológicos y la patologización respeta voluntad individual niega lugar refrendos terceros “autorizados”. Esta ley regula acceso prácticas médicas para intervenir libremente cuerpos. Ahora bien, principios científicos del dimorfismo sexual...
<p style="margin-bottom: 0cm; line-height: 100%;" align="justify"><span style="font-family: serif;"><span style="font-size: xx-small;">En el presente trabajo presentaremos problema filosófico de la identidad personal y analizaremos enfoque genético misma. Este constituye una perspectiva generalizada actualmente en nuestra sociedad, a partir divulgación científica educación formal. Esto se debe, principalmente, al impacto que han tenido las técnicas identificación genética...
Political polarisation and the empowerment of libertarian right is a pressing problem in today's democracies. Previous studies have shown gender gap support for right, with young male populations standing out(1,2). In turn, these right-wingers reproduce hateful, anti-rights, or outright anti-feminist discourses(3), based on biologicist perspectives.Our paper presents results dataset analysis obtained during 2019 (4) 2023 presidential elections. The relationship between political ideology...
In this paper, we will try to establish the conditions of possibility agency. We present a notion ‘freedom’, as opposed traditional concept ‘free will’, based on pluralistic and relational ontology that admits existence real possibilities. contrast view, propose ‘freedom’ is not condition necessarily carried by individuals, nor it limited human beings, but characteristic complex organised systems capable acting mediating agents Our conceptualisation takes up Aristotelian potency different...