Results 31 to 40 of about 21,453 (167)

Os ritmos circadianos e a reprodução em mamíferos [PDF]

open access: yes, 2010
Apresenta-se uma revisão sobre o estudo da Cronobiologia com ênfase nos ritmos circadianos e a relação desses com fenômenos reprodutivos nos ...
Tamura, Eduardo Koji   +2 more
core   +1 more source

Screening for polymorphisms in the AANAT gene and their association with extreme diurnal preference

open access: yesSleep Science, 2013
Arylalkylamine N-Acetyltransferase (AANAT) is a rate-limiting enzyme of the melatonin synthesis pathway. Polymorphisms in the AANAT gene are likely to alter the rate of melatonin synthesis and thus lead particular variations on the circadian rhythms of ...
Bruna Del Vechio Koike   +3 more
doaj   +1 more source

Ritmos atencionales en la escuela colombiana

open access: yesRevista Colombiana de Educación, 2005
La institución escolar establece unos ciertos patrones para la gestión del tiempo (definición del horario y del calendario escolar) fundamentados en creencias que no siempre encuentran respaldo en la evidencia científica.
Christian Hederich Martínez   +1 more
doaj   +1 more source

Genes reloj y ritmos circadianos en tejidos implicados en reproducción [PDF]

open access: yes, 2020
La mayoría de procesos fisiológicos y conductuales tienen lugar en períodos de 24 horas (circadianos). En mamíferos, el reloj circadiano central se encuentra en el núcleo supraquiasmático (NSQ) y coordina sus oscilaciones con los relojes ...
Niño Caballero, Ángela
core  

Activity/rest rhythm of depressed adolescents undergoing therapy: case studies

open access: yesTrends in Psychiatry and Psychotherapy
Introduction: Disorders of circadian rhythms have been reported in studies of both depressed children and of depressed adolescents. The aim of this study was to evaluate whether there is a relationship between the 24-hour spectral power (24h SP) of the ...
Maria Eugênia Mesquita   +7 more
doaj   +1 more source

Adaptação da escala Brian para uso em crianças e adolescentes: um estudo preliminar

open access: yesClinical and Biomedical Research, 2013
Introdução: Alterações nos ritmos circadianos tem sido frequentemente observadas entre pacientes com Transtorno do Humor Bipolar (THB). No entanto, existem poucos instrumentos para medi-las e a maioria deles mede exclusivamente distúrbios do sono.
Ana Claudia Mércio Loredo Souza   +8 more
doaj  

Circadian rest-activity pattern and cardiometabolic illnesses

open access: yesRevista Médica Clínica Las Condes
Background: A regular circadian rest-activity pattern is essential for optimal health. Any disruption or irregularity can lead to alterations in circadian rhythms, which in turn can trigger cardiometabolic illnesses.
Mario Henríquez-Beltrán   +3 more
doaj   +1 more source

Screening for polymorphisms in the HIOMT gene and associations with circadian phenotypes

open access: yesSleep Science, 2013
HIOMT is a gene that encodes hydroxyindole-O-methyltransferase, the final enzyme in the melatonin synthesis pathway. As the timing of melatonin synthesis is different for morning and evening people, it is possible that polymorphisms in genes coding for ...
Danyella Silva Pereira   +5 more
doaj   +1 more source

Regulación de los ritmos circadianos en el nematodo C. elegans : mecanismos moleculares y conservación evolutiva [PDF]

open access: yes, 2023
Fil: Lamberti, Melisa Luciana. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; Argentina.Los ritmos circadianos son oscilaciones endógenas que poseen todos los organismos, desde procariotas hasta seres
Lamberti, Melisa Luciana
core   +1 more source

Circadian rhythm in succinate dehydrogenase activity in Neurospora crassa

open access: yesActa Biológica Colombiana, 2004
Neurospora crassa is a widely studied model of circadian rhythmicity. In this fungus, metabolism is controlled by multiple factors which include development, medium characteristics and the circadian clock. The study of the circadian control of metabolism
Claudia Patricia Álvarez Barón
doaj  

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