Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Membrane Fluidity01:23

Membrane Fluidity

150.1K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
150.1K
Membrane Fluidity01:26

Membrane Fluidity

14.0K
Membrane fluidity is explained by the fluid mosaic model of the cell membrane, which describes the plasma membrane structure as a mosaic of components—including phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
Mosaic nature of the membrane
The mosaic characteristic of the membrane helps the plasma membrane remain fluid. The integral proteins and lipids exist as separate but loosely-attached molecules in the membrane. The membrane is...
14.0K
Overview of the Vascular System01:20

Overview of the Vascular System

2.7K
The vascular system comprises an extensive network of arteries, capillaries, and veins. The vascular system can be broadly divided into the blood and lymphatic systems. Typically, blood vessels can be categorized into three histological regions: tunica intima, tunica media, and tunica adventitia. The tunica intima consists of a single layer of endothelial cells attached to the basal lamina. Underlying the basal lamina is a connective tissue layer and an elastic lamina that gives stability and...
2.7K
Fluid Connective Tissues: Blood and Lymph01:20

Fluid Connective Tissues: Blood and Lymph

16.7K
Blood and lymph are fluid connective tissues. They contain cells, also known as formed elements, circulating in a liquid extracellular matrix, the plasma. The formed elements are derived from hematopoietic stem cells in the bone marrow. Blood and lymph connect all vital parts and carry nutrients, oxygen, and other essential molecules like antibodies.
Blood
The blood flows through blood vessels— arteries, capillaries, and veins. Blood plasma is primarily made of proteins, solutes, and...
16.7K
Characteristics and Functions of Blood01:26

Characteristics and Functions of Blood

10.3K
Blood is specialized connective tissue comprising about 8% of the body mass. It has a thick, liquid extracellular matrix that contains cells, dissolved proteins, and electrolytes, making it five times more viscous than water. Blood is warm, around 38°C, and has an alkaline pH ranging from 7.35 to 7.45.
The primary function of blood is to transport oxygen and carbon dioxide between tissues and the lungs. Oxygenated blood is bright red, while oxygen-depleted blood is darker. It also carries...
10.3K
Structure and Function of Platelets01:18

Structure and Function of Platelets

7.1K
The cell fragments known as platelets are disc-shaped, with an average diameter of about 3 μm and a thickness of roughly 1 μm. They play a crucial role in the body's vascular clotting system, which also involves plasma proteins, blood cells, and blood vessel tissues.
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...
7.1K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

[Brain-derived neurotrophic factor in the acute and early recovery period of ischemic stroke: the role of nocturnal hypoxemia].

Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova·2024
Same author

Mid-holocene Brown Bear (Ursus arctos) from the Bolshoy Lyakhovsky Island (New Siberian Islands).

Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections·2023
Same author

[Peculiarities of hemostasis in patients with COVID-19].

Terapevticheskii arkhiv·2022
Same author

The Interaction of Water-Soluble Nitroxide Radicals with Photosystem II.

Applied magnetic resonance·2021
Same author

[Impact of endothelial dysfunction on the course of acute ST-elevation myocardial infarction and its correction by remote ischemic preconditioning].

Terapevticheskii arkhiv·2020
Same author

Juri Markovich Vasiliev - My Mentor and Friend.

Biochemistry. Biokhimiia·2019

Video Experimental Relacionado

Updated: May 5, 2026

Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells
10:10

Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells

Published on: October 27, 2009

21.5K

La adhesión de las plaquetas a las membranas fosfolípidas líquidas y sólidas.

L B Margolis, A N Tikhonov, E Y Vasilieva

    Cell
    |January 1, 1980
    PubMed
    Resumen

    Las membranas de fosfolípidos líquidos previenen la adhesión plaquetaria, mientras que las membranas sólidas la promueven. Esto sugiere que la fluidez de la membrana celular es crucial para prevenir las interacciones no deseadas de las plaquetas con las paredes de los vasos sanguíneos.

    Más Videos Relacionados

    Characterization of Leukocyte-platelet Rich Fibrin, A Novel Biomaterial
    08:14

    Characterization of Leukocyte-platelet Rich Fibrin, A Novel Biomaterial

    Published on: September 29, 2015

    12.6K
    An In Vitro Assay to Study Platelet Migration Using RGD-Functionalized Avidin-Biotin Tethers
    05:43

    An In Vitro Assay to Study Platelet Migration Using RGD-Functionalized Avidin-Biotin Tethers

    Published on: November 8, 2024

    936

    Videos de Experimentos Relacionados

    Last Updated: May 5, 2026

    Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells
    10:10

    Platelet Adhesion and Aggregation Under Flow using Microfluidic Flow Cells

    Published on: October 27, 2009

    21.5K
    Characterization of Leukocyte-platelet Rich Fibrin, A Novel Biomaterial
    08:14

    Characterization of Leukocyte-platelet Rich Fibrin, A Novel Biomaterial

    Published on: September 29, 2015

    12.6K
    An In Vitro Assay to Study Platelet Migration Using RGD-Functionalized Avidin-Biotin Tethers
    05:43

    An In Vitro Assay to Study Platelet Migration Using RGD-Functionalized Avidin-Biotin Tethers

    Published on: November 8, 2024

    936

    Área de la Ciencia:

    • La bioquímica es la bioquímica.
    • Biología celular Biología celular.
    • Ciencia de los materiales Ciencia de los materiales.

    Sus antecedentes:

    • La adhesión de las plaquetas a las superficies es crítica en la hemostasis y la trombosis.
    • Comprender las propiedades de las membranas modelo que influyen en las interacciones plaquetarias es esencial para el desarrollo de biomateriales y la comprensión de los procesos fisiológicos.

    Objetivo del estudio:

    • Para investigar la relación entre la fluidez de la membrana fosfolípida y la adhesión plaquetaria in vitro.
    • Para determinar si las transiciones de fase de la membrana influyen en la interacción de las plaquetas con las membranas modelo.

    Principales métodos:

    • Preparación de membranas modelo de fosfolípidos utilizando varios lípidos (lecitina, fosfatidiletanolamina, esfingomielina).
    • Evaluación de la adhesión de las plaquetas a estas membranas utilizando plasma rico en plaquetas.
    • Espectroscopia de resonancia de espín de electrones (ESR) para determinar el estado de fase de la membrana (fluido vs. sólido/gel).
    • Modificación química (enlace cruzado) de membranas para alterar su estado de fase.

    Principales resultados:

    • Las membranas fosfolípidas fluidas (por encima de la temperatura de transición de fase) no se adhirieron a las plaquetas.
    • Las membranas fosfolípidas sólidas (gel) (por debajo de la temperatura de transición de fase) eran adhesivas a las plaquetas.
    • Las membranas de enlace cruzado para inducir un estado sólido las hicieron adhesivas a las plaquetas.

    Conclusiones:

    • La fluidez de la membrana, específicamente la transición de un estado líquido a un estado sólido, dicta la adhesión de las plaquetas.
    • La fluidez de la membrana plasmática de las células endoteliales puede ser un factor clave en su naturaleza no adhesiva hacia las plaquetas in vivo.