Buscar recursos académicos

Caviidae is a diverse group of caviomorph rodents that is broadly distributed in South America and is divided into three highly divergent extant lineages: Caviinae (cavies), Dolichotinae (maras), and Hydrochoerinae (capy...

Materias / palabras clave: Molecular clock; Biology; Mitochondrial DNA; Evolutionary biology; Sequence (biology); Gorilla; Hominidae; Divergence (linguistics); Zoology; Paleontology; Ancient DNA; Biological evolution

En este trabajo de Tesis se demostró, por primera vez, que la síntesis retiniana de prostaglandinas E2 y F2? en el hámster dorado varía circadianamente aún en condiciones de oscuridad constante y está regulada por ...

Abstract Background Circadian rhythms are endogenous, transcription-translation feedback loops that align cellular activities with the 24-h light–dark cycle. Stem-cell populations across tissues exhibit circadian oscil...

Circadian clocks coordinate time-of-day-specific metabolic and physiological processes to maximize organismal performance and fitness. In addition to light and temperature, which are regarded as strong zeitgebers for cir...

Non-infectious uveitis encompasses a diverse array of autoimmune ocular disorders marked by the breakdown of immune tolerance and recurrent inflammatory episodes. Regulatory T cells (Tregs) are integral to the maintenanc...

The temporal dynamics in biological systems displays a wide range of behaviors, from periodic oscillations, as in rhythms, bursts, long-range (fractal) correlations, chaotic dynamics up to brown and white noise. Herein, ...

Metabolic dysfunction-associated steatotic liver disease (MASLD) is the most common chronic liver disease around the world, with at least 40% global prevalence. Although genetic susceptibility contributes to disease risk...

"The presence of sulfated polysaccharides in cell walls of seaweeds is considered to be a consequence of the physiological adaptation to the high salinity of the marine environment. Recently, it was found that sulfated p...

Abstract The mechanisms by which core clock components are spatially organized to ensure robust oscillations in mammals remain unclear. Here, we identify the positive limb factor BMAL1 as a phase-separating protein that ...

Circadian rhythms are essential for maintaining intervertebral disc (IDD) homeostasis and regulate cellular metabolism, mechanical responses, and therapeutic efficacy. Core clock genes, especially CLOCK and BMAL1, have c...

Fil: Goya, María Eugenia. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; Argentina. Los ritmos circadianos están basados en relojes endógenos que les permiten a ...

Abstract The Molecular Evolutionary Genetics Analysis (MEGA) software has matured to contain a large collection of methods and tools of computational molecular evolution. Here, we describe new additions that make MEGA a ...

The Molecular Evolutionary Genetics Analysis (MEGA) software has matured to contain a large collection of methods and tools of computational molecular evolution. Here, we describe new additions that make MEGA a more comp...

Examining the pattern of nucleotide substitution for the control region of mitochondrial DNA (mtDNA) in humans and chimpanzees, we developed a new mathematical method for estimating the number of transitional and transve...

Fil: Migliori, María Laura. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Cronobiología; Argentina. Los ritmos circadianos (del latín circa y dies: cerca de 24 horas) tienen un...

BACKGROUND: The evolutionary analysis of molecular sequence variation is a statistical enterprise. This is reflected in the increased use of probabilistic models for phylogenetic inference, multiple sequence alignment, a...

Materias / palabras clave: circadian rhythm, biological clock, chronobiology, biological timing, molecular clock, photoperiodism; Science: Biology (General)