This study examines the biochemical profile of saliva, focusing on flow rate, total protein concentration, and the enzymatic activities of amylase and catalase. The study aims to explore the correlations between these parameters and their response to physiological stress induced by physical activity, providing insights into saliva's diagnostic potential. Thirty-one participants were recruited, and saliva samples were collected before and after a structured physical activity session. Biochemical parameters were analyzed using established protocols to assess changes induced by exercise. Significant positive correlations were observed between protein concentration and amylase activity, particularly in post-exercise conditions. No significant correlations were found between the salivary flow and enzyme activities. Catalase activity displayed a weaker association with protein levels. These findings suggest that saliva can be a non-invasive biomarker for systemic health and stress responses. The study highlights the diagnostic utility of saliva and underscores the need for further investigations in younger and healthier populations to broaden the applicability of these results.
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http://dx.doi.org/10.3390/ijms26031164 | DOI Listing |
Int J Cosmet Sci
March 2025
Hangzhou Shiguang Xinya Biotechnology Co., Ltd., Hangzhou, China.
Objective: The study investigated effects of peony callus extracts (PCE) on the protective efficacy against Ultraviolet B (UVB)-induced photoageing, using in vitro and in vivo studies. The research focused on PCE's ability to protect against inflammatory factors, DNA damage and accumulation of senescent cells, along with the evaluation of the extract's potential anti-photoageing benefits to skin.
Methods: Human keratinocyte cell line (HaCaT cells), mast cells and fibroblasts were used to evaluate the role of PCE in anti-photoageing.
Front Immunol
March 2025
Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, Sichuan, China.
Introduction: The molecular pathogenesis of ocular adnexal mucosa-associated lymphoid tissue (MALT) lymphoma and IgG4-related ophthalmic disease (IgG4-ROD) remains incompletely understood. Differentiating between the two diseases is vital given that the diagnostic evaluation and treatment approaches can vary significantly; this difficulty in distinction is exacerbated by the absence of specific biomarkers. This study aimed to investigate the differences between these two diseases based on their cellular composition, transcriptional heterogeneity, and the immune microenvironment using single-cell RNA transcriptional sequencing (scRNA-seq) technology.
View Article and Find Full Text PDFWellcome Open Res
February 2025
Syngenta International Research Station, Jealott's Hill, Berkshire, England, UK.
We present a genome assembly from a male specimen of (flea beetle; Arthropoda; Insecta; Coleoptera; Chrysomelidae). The genome sequence has a total length of 671.30 megabases.
View Article and Find Full Text PDFFront Cell Infect Microbiol
March 2025
Department of Pharmacy, Qilu Hospital (Qingdao), Cheeloo College of Medicine, Shandong University, Qingdao, Shandong, China.
Objective: This study aimed to predict and evaluate the efficacy of various polymyxin B dosing regimens for Gram-negative bacteremia using Monte Carlo simulation, with a specific focus on assessing the efficacy in patients receiving continuous renal replacement therapy (CRRT). The goal was to optimize clinical dosing regimens and guide rational polymyxin B use in practice.
Methods: A total of 1,939 Gram-negative bacterial strains were analyzed, collected between April 2019 and December 2021 through the China Bloodstream Gram-negative Pathogens Antimicrobial Resistance and Virulence Surveillance Network (CARVIS-NET).
Biosaf Health
October 2024
National Key Laboratory of Intelligent Tracking and Forecasting for Infectious Diseases, NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China.
Rhinovirus (RV) is a common pathogen that causes respiratory tract infection and can cause outbreaks in hospitals and welfare institutions. A cluster of respiratory diseases occurred in a primary school in Shenyang City, Liaoning Province, China, in 2022. In this outbreak, a total of 31 students had symptoms similar to those of upper respiratory tract infection, mainly cough and sore throat.
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