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Objective: To explore the efficacy of different blood specimen preservation methods and time on biochemical indicators of healthy blood donors.
Method: This was a retrospective observational study. Two hundred healthy blood donors were selected as the study participants at Beijing Aerospace General Hospital from April 2023 to September 2023. According to the preservation method of blood samples, they were divided into three groups: ABC, Group-A was stored at room temperature (20°C), Group-B was stored at -20°C, and Group-C was stored at 4°C. Compared and analyzed the differences in biochemical indicators between different time periods and levels within one hour.
Result: The results of various test indexes were measured within one hour, The levels of ALT, CK, LDH, GLU, Cr, and UA in Group-A changed after 12 h, AST and BUN changed after 24 hour, and ALB values changed significantly after one week (p<0.05); The GLU of Group-B changed after 12 hours, and the Cr changed after 24 hours, ALT, AST, CK, LDH, BUN, and UA levels changed after one week (p<0.05), while ALB levels remained unchanged (p=0.23); The video of ALT and LDH in Group-C showed changes after 24 hours, while the values of other indicators changed after one week (p<0.05).
Conclusion: Under normal temperature storage, most indicators change within 12-24 hours. Storage at 4°C can delay the changes of some indicators, while -20°C is more suitable for short-term stable storage.
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http://dx.doi.org/10.12669/pjms.41.7.10873 | DOI Listing |
Nutr J
September 2025
Department of Life Sciences, Division of Food and Nutrition Science, Chalmers University of Technology, Gothenburg, 412 96, Sweden.
Background: Avenanthramides (AVAs) and Avenacosides (AVEs) are unique to oats (Avena Sativa) and may serve as biomarkers of oat intake. However, information regarding their validity as food intake biomarkers is missing. We aimed to investigate critical validation parameters such as half-lives, dose-response, matrix effects, relative bioavailability under single dose, and in relation to the abundance of Feacalibacterium prausnitzii, and under repeated dosing, to understand the potential applications of AVAs and AVEs as biomarkers of oat intake.
View Article and Find Full Text PDFNat Aging
September 2025
Aging Biomarker Consortium (ABC), Beijing, China.
The global surge in the population of people 60 years and older, including that in China, challenges healthcare systems with rising age-related diseases. To address this demographic change, the Aging Biomarker Consortium (ABC) has launched the X-Age Project to develop a comprehensive aging evaluation system tailored to the Chinese population. Our goal is to identify robust biomarkers and construct composite aging clocks that capture biological age, defined as an individual's physiological and molecular state, across diverse Chinese cohorts.
View Article and Find Full Text PDFNat Aging
September 2025
Department of Clinical Molecular Biology, University of Oslo and Akershus University Hospital, Lørenskog, Norway.
Beyond their classical functions as redox cofactors, recent fundamental and clinical research has expanded our understanding of the diverse roles of nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP) in signaling pathways, epigenetic regulation and energy homeostasis. Moreover, NAD and NADP influence numerous diseases as well as the processes of aging, and are emerging as targets for clinical intervention. Here, we summarize safety, bioavailability and efficacy data from NAD-related clinical trials, focusing on aging and neurodegenerative diseases.
View Article and Find Full Text PDFVet Anaesth Analg
August 2025
Department of Anesthesiology and Pain Management, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Argentina.
Objective: To evaluate the effect of 5 cmHO positive end-expiratory pressure (PEEP) and end-inspiratory pause (EIP) on airway dead space (V) and its resultant effects on alveolar tidal volume (V) and physiological dead space-to-tidal volume ratio (V/V) in dorsally recumbent anesthetized dogs.
Study Design: Prospective, controlled clinical study.
Animals: Healthy adult dogs (n = 20, > 20 kg) undergoing elective surgery.
Int J Sports Physiol Perform
September 2025
Department of Physical Education and Sport Sciences, National Taiwan Normal University, Taipei, Taiwan.
Purpose: This study explored the acute physiological effects of different eccentric tempos, explosive speed (EXP), volitional speed, and 4-second tempo during 5 sets of velocity-based squat training.
Methods: Twelve healthy males performed parallel squats under 3 eccentric conditions using a randomized crossover design. Each session included 5 sets at a relative load, initiated with a concentric mean velocity of 0.