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Full-Text Articles in Physiology
Characterization Of Mechanism Of Action Of Hydrogen Sulfide (H2s) In The Regulation Of Smooth Muscle Function, Ancy D. Nalli
Characterization Of Mechanism Of Action Of Hydrogen Sulfide (H2s) In The Regulation Of Smooth Muscle Function, Ancy D. Nalli
Theses and Dissertations
Hydrogen sulfide (H2S) is receiving increasing interest, as much as nitric oxide (NO) and carbon monoxide have received previously, to understand its physiological functions as it meets all the criteria to define as a third gasotransmitter. Endogenous synthesis from L-cysteine via cystathionine-γ-lyase (CSE) and cystathionine-β-synthase (CBS) and the function of H2S as an inhibitor of smooth muscle contraction in gastrointestinal tract are known. However, the loci of generation and action of H2S, and the mechanism of inhibition of contraction are unknown. Hence, my aims in the present study are to: i) identify the expression …
Mitochondrial Therapeutics During Ischemia-Reperfusion; Modulation Of Complex I: Effect Of Metformin., Shawn Y. Sunu
Mitochondrial Therapeutics During Ischemia-Reperfusion; Modulation Of Complex I: Effect Of Metformin., Shawn Y. Sunu
Theses and Dissertations
The modulation of the electron transport during ischemia-reperfusion has been shown to be protective. We hypothesized that metformin, a Complex I inhibitor, may exhibit characteristics of a pharmacological agent that could achieve long-term therapeutic intervention against ischemia-reperfusion injury. Mitochondria were harvested from adult male mice and incubated with or without metformin at 30oC for 15 minutes, while being shaken at 300 rpm. Metformin decreased Complex I oxidative phosphorylation and Complex I activity. However, metformin also increased injury and decreased the maximum membrane potential. Even though there was a decrease in maximum membrane potential, the proton motive force (PMF) …