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What removes metformin from mitochondria and how does it affect ATP production?
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General Health
Question #30361
15 days ago
59

What removes metformin from mitochondria and how does it affect ATP production? - #30361

Pawan

But what removes metformin out of mitochondrias, when metformin is already attracted to negative space in mitochodria & is decreasing atp gradient.

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Dr. Bharat Joshi
I’m a periodontist and academician with a strong clinical and teaching background. Over the last 4 years and 8 months, I’ve been actively involved in dental education, guiding students at multiple levels including dental hygienist, BDS, and MDS programs. Currently, I serve as a Reader at MMCDSR in Ambala, Haryana—a role that allows me to merge my academic passion with hands-on experience. Clinically, I’ve been practicing dentistry for the past 12 years. From routine procedures like scaling and root planing to more advanced cases involving grafts, biopsies, and implant surgeries. Honestly, I still find joy in doing a simple RCT when it’s needed. It’s not just about the procedure but making sure the patient feels comfortable and safe. Academically, I have 26 research publications to my credit. I’m on the editorial boards of the Archives of Dental Research and Journal of Dental Research and Oral Health, and I’ve spent a lot of time reviewing manuscripts—from case reports to meta-analyses and even book reviews. I was honored to receive the “Best Editor” award by Innovative Publications, and Athena Publications recognized me as an “excellent reviewer,” which honestly came as a bit of a surprise! In 2025, I had the opportunity to present a guest lecture in Italy on traumatic oral lesions. Sharing my work and learning from peers globally has been incredibly fulfilling. Outside academics and clinics, I’ve also worked in the pharmaceutical sector as a Drug Safety Associate for about 3 years, focusing on pharmacovigilance. That role really sharpened my attention to detail and deepened my understanding of drug interactions and adverse effects. My goal is to keep learning, and give every patient and student my absolute best.
14 days ago
5

Hello dear See metformin causes lactic acidosis It impacts oxidative phosphorylation It inhibits atp production by selective inhibition of enolase and hmp shunt enzymes Regards

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Once metformin enters the mitochondria and exerts its effects, primarily by inhibiting complex I of the electron transport chain, there isn’t a well-defined mechanism specifically designed to “remove” it from the mitochondria. Rather, metformin is eventually redistributed out of the mitochondria through natural processes such as diffusion, facilitated by the concentration gradient and possibly by ATP-binding cassette (ABC) transporters. These transporters play a role in moving various molecules across membranes. They may help in modulating metformin’s cellular concentration by removing it from the mitochondria back into the cytosol, though direct evidence of their role in metformin efflux is not as robustly characterized as its uptake.

Metformin’s impact on ATP production is significant; by inhibiting complex I, it reduces the overall production of ATP by decreasing the mitochondrial proton gradient, which is crucial for ATP synthesis by ATP synthase. This reduction in ATP levels generates a mild state of energy stress leading to activation of AMP-activated protein kinase (AMPK), a key energy sensor in cells. AMPK activation can result in improved insulin sensitivity, increased glucose uptake, and enhanced fat metabolism, processes which together contribute to its therapeutic effects in type 2 diabetes management. However, this energy modulation can also cause lactic acidosis in rare instances, particularly in individuals with predisposing conditions like renal impairment, due to the buildup of lactate as a byproduct of altered energy metabolism. It’s crucial for patients on metformin to have their renal function regularly monitored and to manage any potential contraindications timely to mitigate risks.

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