Key result
Higher N-palmitoyl glutamine levels are linked to reduced incident mortality and enhanced mitochondrial biogenesis.
Why the study?
Is N-palmitoyl glutamine a molecular transducer of cardiorespiratory fitness and is it associated with incident mortality?
Observational
Yes
Is N-palmitoyl glutamine a molecular transducer of cardiorespiratory fitness and is it associated with incident mortality?
Answers are grounded in this paper and cite their sources.
N-palmitoyl glutamine is identified as a potential exercise-stimulated molecular transducer of cardiorespiratory fitness that promotes mitochondrial biogenesis and is inversely associated with mortality.
BACKGROUND: Cardiorespiratory fitness is an integrative measure of cardiometabolic health and predictor of survival, yet little is known about its molecular underpinnings. Small molecule metabolites and lipids are increasingly recognized as exercise-stimulated signaling molecules and candidate molecular transducers of cardiorespiratory fitness. METHODS: max relationships were assessed using linear regression and tested for replication in FHS (Framingham Heart Study) participants who also underwent cardiopulmonary exercise testing. Metabolite relationships with incident all-cause mortality ascertained in JHS (Jackson Heart Study) and MESA (Multi-Ethnic Study of Atherosclerosis) were tested using Cox regression. Experimental studies of cellular respiration and mitochondrial function were performed in C2C12 myotubes. CONCLUSIONS: max, increases after regular aerobic exercise, and is inversely associated with incident mortality. N-pal-gln stimulates mitochondrial biogenesis and efficiency, demonstrating its potential role as an exercise-stimulated transducer of cardiorespiratory fitness.
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Robbins et al. (2025) conducted an observational in Cardiorespiratory fitness. N-Palmitoyl Glutamine was evaluated on incident all-cause mortality (p=0.0027). N-palmitoyl glutamine is inversely associated with incident mortality and stimulates mitochondrial biogenesis and efficiency (P=0.0027).
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