Circadian Activity
Mostrando 1-12 de 254 artigos, teses e dissertações.
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1. Seasonal and Circadian Study of a Thymol/γ-Terpinene/p-Cymene Type Oil of Ocimum gratissimum L. and Its Antioxidant and Antifungal Effects
Ocimum gratissimum oil is used for various medicinal, food and cosmetic applications due to its high chemical variability. Local businesses have considered the economic exploitation of this plant. A specimen sampled at São Luís, MA, Brazil, with thymol and derivatives oil, was subjected to seasonal and circadian study, and to antifungal and antioxidant ass
J. Braz. Chem. Soc.. Publicado em: 08/04/2019
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2. MUSCLE STRENGTH AND CAFFEINE SUPPLEMENTATION: ARE WE DOING MORE OF THE SAME?
RESUMO O objetivo desta revisão foi examinar na literatura atual os avanços feitos com relação aos efeitos da suplementação de cafeína sobre a força máxima e seus mecanismos associados a partir de 2010, ano em foram publicados dois importantes artigos. As buscas foram realizadas nas bases de dados PubMed, Medline, Scielo e Web of Science procurando-
Rev Bras Med Esporte. Publicado em: 2019-04
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3. Plasticity in the timing of activity in the Red-rumped Agouti, Dasyprocta leporina (Mammalia: Rodentia), in the Atlantic Forest of southeastern Brazil
Resumo O horário de atividade reflete adaptações e respostas das espécies às variações diárias e sazonais do ambiente, sendo o entendimento destes padrões importante para uma melhor compreensão do nicho temporal das espécies. Este trabalho objetivou caracterizar o horário de atividade da cutia (Dasyprocta leporina) em dois remanescentes de Mata A
Biota Neotrop.. Publicado em: 11/02/2019
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4. Biology, distribution and geographic variation of loliginid squids (Mollusca: Cephalopoda) off southwestern Atlantic
ABSTRACT The biology and ecology of southwestern Atlantic loliginid squids have been intensively researched in the last few decades, mostly off the Brazilian southern coast. However, information gathered by scientific research cruisers, either past or recent, is limited. Three species of loliginid squids - the warm-tempered Doryteuthis sanpaulensis (Brakonie
Zoologia (Curitiba). Publicado em: 18/10/2018
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5. Temperature and circadian effects on metabolic rate of South American echimyid rodents, Trinomys setosus and Clyomys bishopi (Rodentia: Echimyidae)
ABSTRACT Basal metabolic rate (BMR) represents the lowest level of metabolic activity capable to sustain homeostasis in an endotherm and is an important tool to compare metabolic rates of different species. Echimyidae is the most specious family within caviomorph rodents, however, little is known about the biology of its species, such as Trinomys setosus (De
Zoologia (Curitiba). Publicado em: 26/04/2018
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6. Bone turnover markers in sheep and goat: A review of the scientific literature
ABSTRACT Bone turnover markers (BTMs) are product of bone cell activity and are generally divided in bone formation and bone resorption markers. The purpose of this review was to structure the available information on the use of BTMs in studies on small ruminants, especially for monitoring their variations related to diet, exercise, gestation and metabolic l
An. Acad. Bras. Ciênc.. Publicado em: 02/03/2017
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7. Circadian rhythms in insect disease vectors
Organisms from bacteria to humans have evolved under predictable daily environmental cycles owing to the Earth’s rotation. This strong selection pressure has generated endogenous circadian clocks that regulate many aspects of behaviour, physiology and metabolism, anticipating and synchronising internal time-keeping to changes in the cyclical environment. I
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
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8. Circadian clock of Aedes aegypti: effects of blood-feeding, insemination and RNA interference
Mosquitoes are the culprits of some of the most important vector borne diseases. A species’ potential as a vector is directly dependent on their pattern of behaviour, which is known to change according to the female’s physiological status such as whether the female is virgin/mated and unfed/blood-fed. However, the molecular mechanism triggered by and/or
Mem. Inst. Oswaldo Cruz. Publicado em: 2013
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9. Daily anticipatory rhythms of behavior and body temperature in response to glucose availability in rats
When food is available recurrently at a particular time of day, several species increase their locomotion in the hours that precede food delivery, a phenomenon called food anticipatory activity (FAA). In mammals, many studies have shown that FAA is driven by a food-entrained circadian oscillator (FEO) that is distinct from the light-entrained pacemaker in th
Psychol. Neurosci.. Publicado em: 2012-12
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10. Chemical composition, circadian rhythm and antibacterial activity of essential oils of piper divaricatum: a new source of safrole
The essential oils from leaves, stems and fruits of Piper divaricatum were analyzed by GC-MS. The tissues showed high safrole content: leaves (98%), fruits (87%) and stems (83%), with yields of 2.0, 4.8 and 1.7%, respectively. This is a new alternative source of safrole, a compound widely used as a flavoring agent and insecticide. The leaf's oil showed antib
Quím. Nova. Publicado em: 2012
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11. Circadian pattern of Bothrops moojeni in captivity (Serpentes: Viperidae)
Members of the subfamily Crotalinae are considered to be essentially nocturnal and most of the data about these snakes have been collected from the field. Information on how nutritional status affects the movement rate and activity patterns is a key point to elucidating the ecophysiology of snakes. In this study, we distributed 28 lancehead Bothrops moojeni
Journal of Venomous Animals and Toxins including Tropical Diseases. Publicado em: 2012
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12. Influence of scheduled restricted feeding on reentrainment of motor activity rhythm after a 6-h light-dark advance in rats
Circadian rhythms are entrained to cyclic environmental cues such as the light-dark cycle and food availability. The suprachiasmatic nucleus of the hypothalamus is the main circadian oscillator in mammals and is entrained primarily by the light-dark cycle, although in some experimental situations food availability can affect its oscillation. Here we tested w
Psychology & Neuroscience. Publicado em: 2011-12