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Genetics and Epigenetics of Human Pubertal Timing: The Contribution of Genes Associated With Central Precocious Puberty.
J Endocr Soc
January 2025
Cellular and Molecular Endocrinology Laboratory LIM/25, Division of Endocrinology and Metabolism, Clinicas Hospital, School of Medicine, University of Sao Paulo, 01246-903 Sao Paulo, Brazil.
Human puberty is a dynamic biological process determined by the increase in the pulsatile secretion of GnRH triggered by distinct factors not fully understood. Current knowledge reveals fine tuning between an increase in stimulatory factors and a decrease in inhibitory factors, where genetic and epigenetic factors have been indicated as key players in the regulation of puberty onset by distinct lines of evidence. Central precocious puberty (CPP) results from the premature reactivation of pulsatile secretion of GnRH.
View Article and Find Full Text PDFEarly prenatal but not postnatal glucocorticoid exposure is associated with enhanced HPA axis activity into adulthood in a wild primate.
Proc Biol Sci
January 2025
Behavioral Ecology Department, University of Goettingen, Goettingen, Germany.
The hypothalamic-pituitary-adrenal (HPA) axis plays a dual role in the biology of developmental plasticity in mammals, including humans-HPA axis activity not only provides the input for, but is also a target of, offspring developmental plasticity. To investigate the understudied effects of exposure timing, this study quantified maternal HPA axis activity during each half of gestation as well as during early lactation and assessed its effect on offspring HPA axis activity in a cross-sectional sample of infant, juvenile and adult Assamese macaques (). To add ecological validity to experimental studies under laboratory conditions, macaques were studied in the wild.
View Article and Find Full Text PDFDepression in adolescence and young adulthood: the difficulty to integrate motivational/emotional systems.
Front Psychol
January 2025
Department of Human Neuroscience, Sapienza University of Rome, Rome, Italy.
Depression is presented as a multi-factorial bio-psycho-social expression that has evolved primarily as an effect of stressors related to the motivational/emotional systems that regulate the in our relationship with conspecifics. These stressors may be caused by two sources of threat, firstly, the loss of bonding with the caregiver and later with a partner and/or group which relates to the SEPARATION (PANIC/GRIEF) system, secondly, social defeat as an expression of the social competition and social dominance. The sexual maturity drives the individual to social competition and social dominance, even if the latter often occurs before sexual maturity, e.
View Article and Find Full Text PDFAutonomic Reflexes With Epipharyngeal Abrasive Therapy (EAT).
Cureus
January 2025
Otolaryngology, Ito ENT Clinic, Funabashi, JPN.
A literature review was conducted of epipharyngeal abrasive therapy (EAT) in the treatment of chronic epipharyngitis, focusing on the mechanism of action by autonomic nerve stimulation. The mechanism of action of EAT in stimulating the immune system has recently become clear. However, the mechanism of action of EAT on the autonomic nervous system remains to be elucidated.
View Article and Find Full Text PDFPerceptions and emotions in postoperative recovery of patients with perianal diseases.
World J Psychiatry
January 2025
Digestive Physiology and Gastrointestinal Motility Lab, Instituto de Investigaciones Médico-Biológicas, Universidad Veracruzana, Veracruz 91700, Mexico.
This article examines the complex relationship between disease perception, negative emotions, and their impact on postoperative recovery in patients with perianal diseases. These conditions not only cause physical discomfort, but also carry a significant emotional burden, often exacerbated by social stigma. Psychological factors, including stress, anxiety, and depression, activate neuroendocrine pathways, such as the hypothalamic-pituitary-adrenal axis, disrupting the gut microbiota and leading to dysbiosis.
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