PMID: 9161463Mar 1, 1996Paper

Effect of the light-dark cycle over the growth of male rats with different health status

Archivos latinoamericanos de nutrición
C Sommer FinkelmanP de Gortari Gallardo

Abstract

The light-dark cycle exerts an influence over the lipostatic mechanism in the superior vertebrate animals promoting an acceleration in the lipid synthesis rate during the dark period (in the case of rodents) and a higher lipolitic rate during the day. This cycle, the feeding habits, and the awake-sleep cycle are syncronized. The Growth Hormone is a molecule that facilitates the lipolysis and the protein synthesis. This hormone is released, by the pituitary gland, during the puberty and during the short wave sleep period. Modifying the light-dark cycle and in consequence the sleep-awake cycle and the food consumption, we pretend to study its influence over the growth rate in weight and length in animals that consume 100% of its nutritional requirements. Also want to dilucidate if an alteration of the cycle (18 h light 6 h dark) in the malnourished animals can revert the deficiency of the growth rate expected in these animals. Male Wistar rats (160); 21 days old, adapted to the temperature and to the light-dark cycle (12 h-12 h) during a week. Then, four groups were formed; Group I: Well nourished rats with a light-dark (12 h-12 h) cycle; Group II: Well nourished rats with a light-dark (18 h-6 h) cycle; Group III: Malnourished ra...Continue Reading

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.