Video Experimental Relacionado
Updated: May 5, 2026
09:50
Impact Assessment of Repeated Exposure of Organotypic 3D Bronchial and Nasal Tissue Culture Models to Whole Cigarette Smoke
Published on: February 12, 2015
11.3K
La exposición al humo del tabaco se asocia con la función endotelial atenuada en niños sanos de 11 años de edad
Katariina Kallio1, Eero Jokinen, Olli T Raitakari
1Research Centre of Applied and Preventive Cardiovascular Medicine, University of Turku, Kiinamyllynkatu 10, FIN-20520 Turku, Finland. katariina.kallio@utu.fi
Circulation
|June 6, 2007
Resumen
El tabaquismo pasivo, medido por la cotinina sérica, perjudica la función endotelial en los niños. Este estudio muestra un deterioro dependiente de la dosis de la dilatación de los vasos sanguíneos en niños de 11 años expuestos al humo ambiental del tabaco.
Área de la Ciencia:
- Cardiología pediátrica.
- Salud ambiental Salud ambiental es la salud del medio ambiente.
- Biología vascular Biología vascular
Sus antecedentes:
- El tabaquismo pasivo está relacionado con el daño arterial en adultos.
- Su impacto en la función endotelial de los niños sigue sin estar claro.
Objetivo del estudio:
- Investigar el efecto del tabaquismo pasivo en la función endotelial en niños.
- Para determinar si los niveles de cotinina se correlacionan con la salud vascular en sujetos pediátricos.
Principales métodos:
- Estudio longitudinal de niños (8-11 años) en un ensayo prospectivo de prevención de la aterosclerosis.
- Los niveles séricos de cotinina se miden anualmente.
- Dilatación mediada por el flujo dependiente del endotelio de la arteria braquial evaluada a través de ultrasonido a los 11 años.
Principales resultados:
- El aumento de la concentración sérica de cotinina se asoció con una reducción de la dilatación mediada por flujo en niños de 11 años.
- Se observó una relación dependiente de la dosis entre los niveles de cotinina y la función endotelial deteriorada.
- Estas asociaciones persistieron incluso después de tener en cuenta los factores de riesgo tradicionales.
Conclusiones:
- La exposición ambiental al humo del tabaco, verificada por los niveles de cotinina, tiene un impacto negativo en la función endotelial en los niños.
- Los hallazgos indican un deterioro dependiente de la dosis de la salud vascular en niños expuestos al humo pasivo.
Videos de Conceptos Relacionados
01:20Chronic Obstructive Pulmonary Disease-II: Pathophysiology
5.0K
Chronic Obstructive Pulmonary Disease (COPD) pathophysiology is intricate and multifaceted, involving a complex interplay of physiological processes. Understanding these mechanisms is crucial for effectively managing and treating COPD. Here is an in-depth look at the critical elements in the pathophysiology of COPD:
Chronic Inflammation
Chronic Inflammation
5.0K
01:29Stimulants
1.4K
Stimulants are substances that enhance neural activity and elevate dopamine levels in the brain, leading to their highly addictive nature. These drugs include cocaine, amphetamines, MDMA, caffeine, and nicotine, each with distinct mechanisms of action and varied health implications.
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
Cocaine can be administered via snorting, injection, or smoking. It primarily functions by blocking the reuptake of dopamine, resulting in a euphoric high characterized by an intense sensation of happiness and...
1.4K
01:26Stress Prevention and Stress Management Techniques IV
366
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
366
01:23Chronic Obstructive Pulmonary Disease I: Introduction
71
Chronic obstructive pulmonary disease is a common, preventable, and treatable respiratory disorder characterized by persistent symptoms and progressive airflow limitation. This limitation results from a combination of small-airway disease (obstructive bronchiolitis) and parenchymal destruction (emphysema), both driven by chronic inflammation from exposure to harmful particles or gases.The disease includes two main pathological entities: emphysema, marked by destruction of alveolar walls and...
71
01:23Chronic Obstructive Pulmonary Disease II: Emphysema
155
Emphysema, a major phenotype of chronic obstructive pulmonary disease (COPD), is characterized by irreversible destruction of alveolar walls and permanent enlargement of distal airspaces. Unlike chronic bronchitis, which primarily affects the airways, emphysema predominantly involves the lung parenchyma, where structural damage leads to airflow limitation.PathophysiologyIt most commonly results from prolonged exposure to cigarette smoke and other toxic gases, particularly cigarette smoke.
155
01:24Chronic Obstructive Pulmonary Disease III: Chronic Bronchitis Features
77
Chronic bronchitis is a key phenotype of chronic obstructive pulmonary disease (COPD), characterized by airway-centered inflammation and mucus overproduction. It develops from long-term exposure to harmful particles or gases, most commonly cigarette smoke, which triggers a persistent inflammatory response.Cellular and Structural ChangesInflammation initially affects the large bronchi and later the smaller airways, with infiltration by immune cells, including neutrophils, macrophages, and...
77