Video Experimental Relacionado
Updated: May 5, 2026
07:54
Field-Based Thermal Physiology Assay: Cold Shock Recovery under Ambient Conditions
Published on: March 9, 2021
3.6K
La termorregulación en el ciclo de vida de un parásito
1Growth and Development Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland 20892-0425, USA.
Nature
|August 16, 2002
Resumen
El parásito de la malaria Plasmodium falciparum utiliza la termorregulación para adaptarse. Las temperaturas más frías regulan al alza la transcripción del ARN, ayudando a su transición de huéspedes humanos a mosquitos.
Área de la Ciencia:
- Parasitología Parasitología.
- Biología Molecular Biología Molecular
- Adaptación al medio ambiente La adaptación al medio ambiente.
Sus antecedentes:
- El parásito de la malaria, Plasmodium falciparum, tiene un ciclo de vida complejo con distintas etapas de desarrollo.
- Cada etapa presenta desafíos ambientales únicos que requieren la adaptación de los parásitos.
- Comprender estas adaptaciones es clave para controlar la transmisión de la malaria.
Objetivo del estudio:
- Investigar el papel de la termorregulación en la transición del desarrollo de Plasmodium falciparum.
- Para dilucidar cómo el parásito detecta y responde a los cambios de temperatura ambiental durante su ciclo de vida.
Principales métodos:
- Análisis de los patrones de transcripción de ARN bajo condiciones de temperatura variables.
- Centrarse en la regulación dependiente de la temperatura de moléculas específicas de ARN.
Principales resultados:
- La termorregulación, específicamente la regulación ascendente de la transcripción del ARN a temperaturas más bajas, es crítica para el desarrollo de parásitos.
- Esta respuesta adaptativa facilita la transición de Plasmodium falciparum de huésped humano a huésped de mosquito.
Conclusiones:
- La detección ambiental y las respuestas adaptativas, particularmente la termorregulación, son vitales para la supervivencia y la transmisión del parásito de la malaria.
- Los hallazgos proporcionan nuevos conocimientos sobre los mecanismos moleculares subyacentes a la adaptabilidad ambiental de Plasmodium falciparum.
Videos de Conceptos Relacionados
01:25Body Temperature
3.7K
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
3.7K
01:19Mechanism of heat transfer
2.3K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
2.3K
01:25Increased Body Temperature
6.4K
A body temperature above 38°C (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
6.4K
01:07Body Temperature
1.9K
Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
1.9K
01:26Thermoregulation
2.9K
The human body has a sophisticated thermoregulation system that employs negative feedback mechanisms to maintain an optimal core temperature. When the core temperature drops, peripheral and central thermoreceptors send signals to the hypothalamus, activating the heat-promoting center. This center triggers several responses aimed at increasing the core temperature. First, vasoconstriction reduces the flow of warm blood from internal organs to the skin so that the heat is not lost from the skin,...
2.9K
01:22Microbial Interactions: Parasitism
116
Parasitism is a form of microbial interaction in which parasitic microbes exploit a host organism for nutrients and shelter, often at the host's expense. Unlike mutualistic relationships, where both organisms benefit, parasitism benefits only the parasite and harms the host.Classification of ParasitesMicrobial parasites are broadly classified based on their location relative to the host.Ectoparasites remain on the host’s surface, such as the skin or outer tissues, drawing nutrients...
116