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| Urolithins are gut microbiota–derived dibenzopyran-6-one metabolites formed from ellagitannins → ellagic acid. They are the bioactive, systemically relevant forms responsible for most of the anticancer, mitochondrial, and signaling effects attributed to pomegranate and berry consumption. Ellagic acid itself is largely confined to the gut lumen; urolithins are what reach circulation and tissues. Urolithin A (UA), Most studied; mitophagy, anticancer, anti-inflammatory Humans fall into urolithin metabotypes: Metabotype Description Approx. Population A Produces UA (best profile) ~40% B Produces UB ± UA ~25–30% 0 Non-producer ~30% ROS Modulation (Context-Dependent) Cancer cells: -Mild ROS ↑ or redox stress → apoptosis, growth arrest Normal cells: -ROS ↓, improved mitochondrial efficiency This duality is why urolithins are less chemo-antagonistic than classic antioxidants. Anticancer Signaling ↓ PI3K/AKT/mTOR ↓ Wnt/β-catenin ↓ NF-κB, STAT3 Cell-cycle arrest (G1/S) Unlike sulforaphane or NAC, urolithins: -Do not strongly upregulate NRF2 in cancer cells -May normalize NRF2 signaling in normal cellsDirect Urolithin A Supplements: Bypass microbiome dependency Urolithin A–type activity — Cancer vs Normal Cell Effects
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| Mitochondrial respiration plays a crucial role in the development and progression of cancer. Cancer cells often exhibit altered metabolic profiles, including changes in mitochondrial respiration, to support their rapid growth and proliferation. In cancer cells, mitochondrial respiration is often downregulated, and instead, they rely on glycolysis for energy production, even in the presence of oxygen. This phenomenon is known as the "Warburg effect." There are several key players involved in the regulation of mitochondrial respiration in cancer cells, including: Pyruvate dehydrogenase (PDH): a critical enzyme that converts pyruvate into acetyl-CoA, which is then fed into the citric acid cycle. Citrate synthase: an enzyme that catalyzes the first step of the citric acid cycle. Succinate dehydrogenase (SDH): an enzyme that participates in both the citric acid cycle and the electron transport chain. Cytochrome c oxidase (COX): the final enzyme in the electron transport chain, responsible for generating ATP. Alterations in the expression and activity of these enzymes can impact mitochondrial respiration in cancer cells. For example, increased expression of PDH and citrate synthase can enhance mitochondrial respiration, while decreased expression of SDH and COX can impair it. Additionally, various transcription factors and signaling pathways regulate mitochondrial respiration in cancer cells, including: HIF-1α (hypoxia-inducible factor 1 alpha): a transcription factor that promotes glycolysis and suppresses mitochondrial respiration in response to hypoxia. c-Myc: a transcription factor that regulates the expression of genes involved in mitochondrial respiration and biogenesis. PI3K/Akt/mTOR: a signaling pathway that promotes cell growth and proliferation, in part by regulating mitochondrial respiration. |
| 4874- | Uro, | EGCG, | A Combination Therapy of Urolithin A+EGCG Has Stronger Protective Effects than Single Drug Urolithin A in a Humanized Amyloid Beta Knockin Mice for Late-Onset Alzheimer's Disease |
| - | in-vivo, | AD, | NA |
Query results interpretion may depend on "conditions" listed in the research papers. Such Conditions may include : -low or high Dose -format for product, such as nano of lipid formations -different cell line effects -synergies with other products -if effect was for normal or cancerous cells
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