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Do the biological characteristics of trout (Salmo trutta) smolts influence their spring migration timing and maiden marine sojourn duration?
J Fish Biol
January 2025
Salmon and Trout Research Centre, Game and Wildlife Conservation Trust, Dorset, UK.
Anadromous salmonids migrate seaward to exploit feeding and growth opportunities in marine habitats, yet how smolt biological characteristics influence their marine migratory behavior remains poorly understood. This study used 9 years of trout (Salmo trutta) population monitoring data from 15,595 tagged age-0+ parr, 1033 smolts detected migrating downstream in spring, and 99 adults detected returning from their first marine migration to the River Frome (Dorset, UK) to investigate the influence of smolt biological characteristics on their migration timing and maiden marine sojourn duration. Age-specific differences in the influence of smolt length on migration timing were found, with longer 1-year-old smolts emigrating later than their shorter counterparts within the same age class, but the opposite association existed for 2-year-old smolts.
View Article and Find Full Text PDFAnesthetic Approaches and Their Impact on Cancer Recurrence and Metastasis: A Comprehensive Review.
Cancers (Basel)
December 2024
Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.
Cancer recurrence and metastasis remain critical challenges following surgical resection, influenced by complex perioperative mechanisms. This review explores how surgical stress triggers systemic changes, such as neuroendocrine responses, immune suppression, and inflammation, which promote the dissemination of residual cancer cells and circulating tumor cells. Key mechanisms, such as epithelial-mesenchymal transition and angiogenesis, further enhance metastasis, while hypoxia-inducible factors and inflammatory responses create a microenvironment conducive to tumor progression.
View Article and Find Full Text PDFMorphometric analysis of the female reproductive tract: influence of long-term inhalation of trace amounts of sevoflurane.
J Mol Histol
December 2024
Department of Anesthesiology, Sanmenxia Central Hospital of Henan University of Science and Technology, Sanmenxia, 472000, Henan, China.
Sevoflurane is extensively employed as an inhalation anesthetic in medical practices, due to its promising pharmacokinetics. Conversely, the data regarding effects of prolonged exposure to trace amounts of sevoflurane on the female reproductive system is obscure. Therefore, this study aimed to investigate the reproductive toxicity and underlying mechanism of long-term sevoflurane inhalation in female rats.
View Article and Find Full Text PDFDual effects of GABAAR agonist anesthetics in neurodevelopment and vulnerable brains: from neurotoxic to therapeutic effects.
Neural Regen Res
December 2024
Department of Anesthesiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, Guangdong Province, China.
Debates regarding the specific effects of general anesthesia on developing brains have persisted for over 30 years. A consensus has been reached that prolonged, repeated, high-dose exposure to anesthetics is associated with a higher incidence of deficits in behavior and executive function, while single exposure has a relatively minor effect on long-term neurological function. In this review, we summarize the dose-dependent neuroprotective or neurotoxic effects of gamma-aminobutyric acid type A receptor agonists, a representative group of sedatives, on developing brains or central nervous system diseases.
View Article and Find Full Text PDFEffect of histone demethylase KDM5B on long-term cognitive impairment in neonatal rats induced by sevoflurane.
Front Mol Neurosci
November 2024
School of Anesthesiology, Zunyi Medical University, Zunyi, China.
Introduction: Whether repeated inhalation of sevoflurane during the neonatal period causes long-term learning and memory impairments in humans is unclear. Some recent investigations have indicated that general anesthesia drugs affect histone methylation modification and may further affect learning and memory ability. This study aimed to explore the role and mechanism of histone methylation in long-term cognitive dysfunction caused by repeated inhalation of sevoflurane during the neonatal period.
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