2013
DOI: 10.1038/nature11808
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Biguanides suppress hepatic glucagon signalling by decreasing production of cyclic AMP

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Cited by 753 publications
(710 citation statements)
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References 29 publications
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“…Reduction in hepatic glucose output is the principal action of metformin although its mechanism(s) have not been clearly identified. The previously held view that metformin reduces glucose synthesis via activation of AMPK has been challenged; recent data indicate that lowered hepatic glucose output with metformin may result from inhibition of electron transport in mitochondrial respiratory Complex I [29] (this is described in more detail in the commentary by Rena et al in this issue of Diabetologia [30]), as well as antagonism of glucagon action in the liver [31].…”
Section: Mechanisms Of Metformin Action In Target Tissues Relevant Tomentioning
confidence: 99%
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“…Reduction in hepatic glucose output is the principal action of metformin although its mechanism(s) have not been clearly identified. The previously held view that metformin reduces glucose synthesis via activation of AMPK has been challenged; recent data indicate that lowered hepatic glucose output with metformin may result from inhibition of electron transport in mitochondrial respiratory Complex I [29] (this is described in more detail in the commentary by Rena et al in this issue of Diabetologia [30]), as well as antagonism of glucagon action in the liver [31].…”
Section: Mechanisms Of Metformin Action In Target Tissues Relevant Tomentioning
confidence: 99%
“…Further, in one recent study, metformin lowered testosterone levels in women with PCOS despite the absence of any improvement in insulin sensitivity, as quantified by a frequently sampled IVGTT [40]. In vitro studies using cultured ovarian theca cells support a direct inhibitory effect of metformin on ovarian steroidogenesis [35,41,42] through inhibition of mitochondrial Complex I [35], a mechanism which has also been implicated in metformin action in the liver and other tissues [29,31].…”
Section: Impact Of Metformin On Reproductive Features Of Pcosmentioning
confidence: 99%
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“…In the Procedure, we use the Adenovirus (Ad) CMV-Turq-AKAR4 vector as an example, which was made as described previously 49 …”
Section: #06366236001 Made Up Fresh)mentioning
confidence: 99%
“…En effet, l'AMP inhibe l'activité de l'adénylate cyclase stimulée par le glucagon en se liant sur un site inhibiteur appelé site P au niveau de l'enzyme. Cette inhibition diminue les concentrations intracellulaires d'AMP cyclique (AMPc) et l'activité de la PKA (protéine kinase A), conduisant à une réduction de la production de glucose stimulée par le glucagon [23] (Figure 2). Ainsi, la metformine diminue l'hyperglycémie par une inhibition de la production de glucose hépatique en réduisant le flux gluconéogénique par une action purement énergétique.…”
Section: Le Foie Est L'organe Cible De La Metformineunclassified