Video Experimental Relacionado
Updated: Sep 9, 2025
12:59
Improving Strength, Power, Muscle Aerobic Capacity, and Glucose Tolerance through Short-term Progressive Strength Training Among Elderly People
Published on: July 5, 2017
12.7K
La terapia dirigida con Glycocalyx previene la pérdida muscular relacionada con la edad y disminuye la capacidad
Daniel R Machin1,2, Md Torikul Islam3, Alec Malouf2
1Department of Cell Biology and Physiology, Vascular Physiology Group, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA.
Aging
|September 2, 2025
Resumen
El hialuronano de alto peso molecular (HMW-HA) es crucial para la función física. La suplementación con EndocalyxTM, rico en HMW-HA, preserva la capacidad de ejercicio y la salud muscular en ratones envejecidos.
Área de la Ciencia:
- Gerontología
- Biología cardiovascular
- Fisiología del músculo esquelético
Sus antecedentes:
- La disminución relacionada con la edad en la función cardiovascular y la capacidad física predice la mortalidad.
- Estudios anteriores mostraron que EndocalyxTM (hialuronano de alto peso molecular) mejora la salud cardiovascular en el envejecimiento.
- El papel de HMW-HA en la disfunción física relacionada con la edad no se ha explorado.
Objetivo del estudio:
- Investigar el papel de la HMW-HA en el deterioro físico relacionado con la edad.
- Determinar los efectos de la suplementación con EndocalyxTM en la función física en ratones envejecidos.
Principales métodos:
- Eliminación inducida por tamoxifeno de Has2 (productor de HMW-HA) para evaluar su necesidad para la función física.
- Suplementación con EndocalyxTM en ratones jóvenes y viejos durante 10 semanas.
- Evaluación del grosor del glicólise, la capacidad de ejercicio y el contenido mitocondrial del músculo esquelético (actividad de la citrato sintasa).
Principales resultados:
- La deleción de Has2 condujo al agotamiento del glicócalico, a la reducción de la capacidad de ejercicio y al deterioro de la respiración del músculo esquelético.
- Los ratones viejos suplementados con EndocalyxTM mostraron un aumento en el grosor del glicolítico en comparación con los controles.
- EndocalyxTM impidió la disminución de la capacidad de ejercicio relacionada con la edad y mantuvo el contenido mitocondrial del músculo esquelético.
Conclusiones:
- La integridad de Glycocalyx es esencial para mantener la función física durante el envejecimiento.
- Dirigirse al glicolítico con intervenciones como EndocalyxTM puede ofrecer una estrategia terapéutica para la disfunción física relacionada con la edad.
Más Videos Relacionados
Videos de Conceptos Relacionados
01:20Myasthenia Gravis: Overview and Treatment
1.9K
Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which...
1.9K
01:19The Effect of Aging on Tissues
2.4K
Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
2.4K
01:26Cross-bridge Cycle
118.2K
As muscle contracts, the overlap between the thin and thick filaments increases, decreasing the length of the sarcomere—the contractile unit of the muscle—using energy in the form of ATP. At the molecular level, this is a cyclic, multistep process that involves binding and hydrolysis of ATP, and movement of actin by myosin.
118.2K
01:31Skeletal Muscle Relaxants: Therapeutic Uses
612
Skeletal muscle relaxants are used to relax muscle tone and alleviate painful muscle contractions. However, the choice of skeletal muscle relaxants depends on the duration of the surgical procedure in order to minimize potential side effects. Skeletal muscle relaxants like neuromuscular blocking agents [NMBAs] are commonly employed as adjuvants alongside general anesthetics in clinical settings. NMBAs are also used to maintain controlled ventilation during surgery of the larynx or pharynx...
612
01:24Muscle Recovery and Fatigue
2.5K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
2.5K
01:27Exercise and Muscle Performance
1.6K
Exercise induces a range of adaptations in muscle tissue, depending on the type and duration of activity. Such physical training can be broadly categorized into two types: endurance exercises and resistance exercises.
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
Endurance exercises
Endurance exercises involve running, swimming, or cycling, which require repetitive movements with low force output. When a person engages in endurance exercise, a few noticeable changes occur in their skeletal muscles. For instance, the number of capillaries...
1.6K