Results 81 to 90 of about 3,506 (222)

Endocrinologic Control of Men's Sexual Desire and Arousal/Erection [PDF]

open access: yes, 2016
Several hormones and neurotransmitters orchestrate men's sexual response, including the appetitive (sexual desire) and consummative (arousal and penile erection) phases.
Aversa, Antonio   +4 more
core   +1 more source

Prolonged exposure to artificial light and carcinogenesis: A systematic review of oncostatic mechanisms associated with melatonin pathways

open access: yesPhotochemistry and Photobiology, EarlyView.
Exposure to artificial light at night (ALAN), particularly at blue wavelengths, disrupts circadian rhythms by suppressing melatonin, thereby increasing cancer susceptibility. This systematic review consolidates evidence linking prolonged ALAN exposure to an elevated risk of breast and prostate tumors.
Gabriel Barboza   +4 more
wiley   +1 more source

The blue lizard spandrel and the island syndrome

open access: yesBMC Evolutionary Biology, 2010
Background Many small vertebrates on islands grow larger, mature later, lay smaller clutches/litters, and are less sexually dimorphic and aggressive than their mainland relatives. This set of observations is referred to as the 'Island Syndrome'.
Monti Daria M   +8 more
doaj   +1 more source

Maternal nutrition as a key determinant of placental and developing blood–brain barrier xenobiotic protective functions

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Suboptimal maternal nutrition alters placental and developing blood–brain barrier (BBB) protective function and is associated with increased fetal brain vulnerability. In the placenta, nutritional adversity may reduce the exchange surface area and promote meta‐inflammation, compromising barrier efficiency in a model‐ and context ...
Kristin L. Connor   +4 more
wiley   +1 more source

Melanocortins, neural plasticity and aging [PDF]

open access: yesProgress in Neuro-Psychopharmacology and Biological Psychiatry, 1986
Peptides derived from ACHT and alpha-MSH are known to exert trophic influences on peripheral and central nervous structures. Age-related brain diseases may in part be related to loss of neural plasticity. Melanocortins improve adaptional abilities of the nervous system. Chronic treatment with melanocortins may counteract age-related brain pathology.
Gispen, W.H.   +3 more
openaire   +3 more sources

Condition-dependence, pleiotropy and the handicap principle of sexual selection in melanin-based colouration. [PDF]

open access: yes, 2015
The signalling function of melanin-based colouration is debated. Sexual selection theory states that ornaments should be costly to produce, maintain, wear or display to signal quality honestly to potential mates or competitors.
Roulin, A.
core   +1 more source

Influence of MC1R Gene Variants on Coat Color of Indicine Cattle Breeds

open access: yesAnimal Genetics, Volume 57, Issue 3, June 2026.
ABSTRACT Indicine cattle display a broad range of coat colors, representing a relevant and breed‐defining trait required for registration in breeder association. Among the genes involved in pigmentation, MC1R stands out for modulating the synthesis of melanin‐related proteins and remains poorly explored in indicine cattle breeds. Therefore, we aimed to
Silel V. S. A. Maciel   +12 more
wiley   +1 more source

Exploring metabolic dysfunction in chronic kidney disease [PDF]

open access: yes, 2012
Impaired kidney function and chronic kidney disease (CKD) leading to kidney failure and end-stage renal disease (ESRD) is a serious medical condition associated with increased morbidity, mortality, and in particular cardiovascular disease (CVD) risk ...
Slee, Adrian D.
core   +2 more sources

Obesity-associated melanocortin-4 receptor mutations are associated with changes in the brain response to food cues. [PDF]

open access: yes, 2014
CONTEXT: Mutations in the melanocortin-4 receptor (MC4R) represent the commonest genetic form of obesity and are associated with hyperphagia. OBJECTIVE: The aim of this study was to investigate whether melanocortin signaling modulates anticipatory food ...
Calder, Andrew J   +7 more
core   +4 more sources

Fifty Years Later, and We Still Don't Know About Badges of Status

open access: yesEcology and Evolution, Volume 16, Issue 5, May 2026.
Overall, aggression and coloration are positively associated across species, but the generality of this relationship is low, the relationship depends on effect size origin, and the dataset requires further verification, which raises methodological concerns.
Alfredo Sánchez‐Tójar   +1 more
wiley   +1 more source

Home - About - Disclaimer - Privacy