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Sleep drive is coupled to tissue damage via shedding of Caenorhabditis elegans EGFR ligand SISS-1.
Nat Commun
December 2024
Department of Biology, California State University Northridge, Northridge, CA, USA.
The benefits of sleep extend beyond the nervous system. Peripheral tissues impact sleep regulation, and increased sleep is observed in response to damaging conditions, even those that selectively affect non-neuronal cells. However, the 'sleep need' signal released by stressed tissues is not known.
View Article and Find Full Text PDFSystematic surveillance of SARS-CoV-2 reveals dynamics of variant mutagenesis and transmission in a large urban population.
Nat Commun
December 2024
Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, M5G 1X5, Canada.
Highly mutable pathogens generate viral diversity that impacts virulence, transmissibility, treatment, and thwarts acquired immunity. We previously described C19-SPAR-Seq, a high-throughput, next-generation sequencing platform to detect SARS-CoV-2 that we here deployed to systematically profile variant dynamics of SARS-CoV-2 for over 3 years in a large, North American urban environment (Toronto, Canada). Sequencing of the ACE2 receptor binding motif and polybasic furin cleavage site of the Spike gene in over 70,000 patients revealed that population sweeps of canonical variants of concern (VOCs) occurred in repeating wavelets.
View Article and Find Full Text PDFA microbiota-derived metabolite, 3-phenyllactic acid, prolongs healthspan by enhancing mitochondrial function and stress resilience via SKN-1/ATFS-1 in C. elegans.
Nat Commun
December 2024
Department of Biomedical Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, Republic of Korea.
The mechanisms underlying the impact of probiotic supplementation on health remain largely elusive. While previous studies primarily focus on the discovery of novel bioactive bacteria and alterations in the microbiome environment to explain potential probiotic effects, our research delves into the role of living Lactiplantibacillus (formerly known as Lactobacillus) and their conditioned media, highlighting that only the former, not dead bacteria, enhance the healthspan of Caenorhabditis elegans (C. elegans).
View Article and Find Full Text PDFCesarean section: One procedure, varied techniques. Detailed observations of 1013 first cesarean sections in a tertiary hospital in Ghana.
Int J Gynaecol Obstet
December 2024
Department of Obstetrics, Birth Center Wilhelmina Children Hospital, Division Woman and Baby, University Medical Center, Utrecht, The Netherlands.
Objective: Cesarean sections (CS) are among the most performed surgical procedures in the world. Small variations in surgical techniques could have a significant impact on a global scale, for example, in postoperative complications. In the present study we aimed to observe and audit every single step used during first time CS.
View Article and Find Full Text PDFMortality in Haemophilia Patients in India: A National Cohort Study.
Haemophilia
December 2024
Advanced Center for Oncology, Hematology and Rare Disorders (ACOHRD), K.J. Somaiya Super Speciality Hospital & Research Center, Somaiya Ayurvihar, Sion East, Mumbai, Maharashtra, India.
Introduction: Mortality and morbidity in persons with haemophilia (PWH) have decreased due to improved diagnosis and treatment along with comprehensive population outreach efforts, but the impact is not uniform in different countries.
Aim: The study aims to assess all-cause and intracranial haemorrhage (ICH)-specific mortality of PWH in India.
Methods: This is a retrospective, observational, multi-centric cohort study of 1020 haemophilia patients from three centres in India.
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