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• W2805989395 abstract "Hydrogen Sulfide (H2S), recently identified as the third endogenously produced gaseous messenger, is a promising therapeutic prospect for multiple cardio-pathological states, including myocardial hypertrophy. The molecular niche of H2S in normal or diseased cardiac cells is, however, sparsely understood. Here, we show that β-adrenergic receptor (β-AR) overstimulation, known to produce hypertrophic effects in cardiomyocytes, rapidly decreased endogenous H2S levels. The preservation of intracellular H2S levels under these conditions strongly suppressed hypertrophic responses to adrenergic overstimulation, thus suggesting its intrinsic role in this process. Interestingly, unbiased global transcriptome sequencing analysis revealed an integrated metabolic circuitry, centrally linked by NADPH homeostasis, as the direct target of intracellular H2S augmentation. Within these gene networks, glucose-6-phosphate dehydrogenase (G6PD), the first and rate-limiting enzyme (producing NADPH) in pentose phosphate pathway, emerged as the critical node regulating cellular effects of H2S. Utilizing both cellular and animal model systems, we show that H2S-induced elevated G6PD activity is critical for the suppression of cardiac hypertrophy in response to adrenergic overstimulation. We also describe experimental evidences suggesting multiple processes/pathways involved in regulation of G6PD activity, sustained over extended duration of time, in response to endogenous H2S augmentation. Our data, thus, revealed H2S as a critical endogenous regulator of cardiac metabolic circuitry, and also mechanistic basis for its anti-hypertrophic effects." @default.
• W2805989395 created "2018-06-13" @default.
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• W2805989395 date "2018-02-01" @default.
• W2805989395 modified "2023-10-08" @default.
• W2805989395 title "Glucose-6-phosphate dehydrogenase is critical for suppression of cardiac hypertrophy by H2S" @default.
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• W2805989395 doi "https://doi.org/10.1038/s41420-017-0010-9" @default.
• W2805989395 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5841415" @default.
• W2805989395 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29531803" @default.
• W2805989395 hasPublicationYear "2018" @default.
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