Punicalagins - NutraPedia

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Punicalagins Overview

1) Studied Conditions

Punicalagins have been studied for various health conditions, including:

  • Cardiovascular diseases
  • Diabetes
  • Cancer
  • Obesity
  • Alzheimer's disease
  • Inflammatory conditions

2) Efficacy in Treating Conditions

While preliminary studies show promise, the efficacy of punicalagins in treating specific health conditions is not yet fully established and requires more clinical research to confirm its benefits.

3) Health Benefits

Punicalagins are known to have several potential health benefits, such as:

  • Antioxidant properties
  • Anti-inflammatory effects
  • Antimicrobial activity
  • Improvement in heart health
  • Potential to reduce blood sugar levels
  • May have neuroprotective effects

4) Downsides

Although generally considered safe, there can be downsides to the use of punicalagins, including:

  • Allergic reactions in some individuals
  • Potential interactions with certain medications
  • Insufficient data on long-term use

5) Genetic Variations and Effects

Currently, there is limited research on the relationship between punicalagins and specific genetic variations. Some studies suggest that genetic differences might influence the metabolism and effectiveness of polyphenols, including punicalagins; however, more research is needed to draw conclusive results.

Summary of Research on Punicalagins and Related Compounds

Punicalagins in Pomegranate Juice

Studies have shown that commercial pomegranate juice has high levels of punicalagins, tannins that contribute to its strong antioxidant activity, which is greater than that of red wine and green tea. These punicalagins are derived from the whole fruit, including the rind, rather than just the arils.

Metabolism and Bioavailability of Punicalagins

Research in humans and rats indicates that punicalagins are metabolized by gut microflora into various derivatives, such as 6H-dibenzo[b,d]pyran-6-one derivatives. These metabolites have been identified in plasma and urine, though the majority of ingested punicalagins are not recovered, suggesting they may be transformed into undetectable metabolites or stored in tissues not analyzed.

Health Effects of Punicalagins

Punicalagins and their metabolites, such as urolithins, have been studied for their health effects, including antioxidant, anti-inflammatory, and potential anticancer properties. Urolithins, in particular, show estrogenic and antiestrogenic activities, influencing the proliferation of human breast cancer cells and binding to estrogen receptors.

Ellagitannins and Ellagic Acid

Ellagitannins from various foods, such as strawberries and walnuts, are metabolized into urolithin B in humans. The presence of urolithin B in urine suggests that gut microflora plays a significant role in metabolizing these compounds, which may have health benefits within the gastrointestinal tract.

Interactions with Drug Metabolism

Pomegranate juice, particularly punicalagins, can inhibit sulfoconjugation, a key metabolic pathway, potentially affecting the bioavailability of drugs and other compounds. This interaction highlights the importance of understanding potential nutrient-drug interactions.

Therapeutic Potential

Evidence suggests that punicalagins and related compounds have therapeutic potentials, such as protecting against liver damage, reducing inflammation in a model of colon inflammation, and exhibiting anti-cancer effects against prostate and breast cancer cells. Pomegranate extracts have also shown benefits in controlling blood sugar levels, managing diabetes, and protecting against gastric ulcers.

Safety and Toxicity

Studies assessing the toxicity of pomegranate extracts have generally found them to be safe, with no significant toxic effects observed at doses showing antiviral effectiveness or traditionally used in folk medicine.

References:


  1. Antioxidant activity of pomegranate juice and its relationship with phenolic composition and processing
  2. Ellagic acid and ellagitannins affect on sedimentation in muscadine juice and wine
  3. Absorption, metabolism, and antioxidant effects of pomegranate (Punica granatum l.) polyphenols after ingestion of a standardized extract in healthy human volunteers
  4. Pharmacologically active ellagitannins from Terminalia myriocarpa
  5. Evaluation of the bioavailability and metabolism in the rat of punicalagin, an antioxidant polyphenol from pomegranate juice
  6. Urolithins, ellagic acid-derived metabolites produced by human colonic microflora, exhibit estrogenic and antiestrogenic activities
  7. Pomegranate juice inhibits sulfoconjugation in Caco-2 human colon carcinoma cells
  8. The potent in vitro antioxidant ellagitannins from pomegranate juice are metabolised into bioavailable but poor antioxidant hydroxy-6H-dibenzopyran-6-one derivatives by the colonic microflora of healthy humans
  9. Metabolism of antioxidant and chemopreventive ellagitannins from strawberries, raspberries, walnuts, and oak-aged wine in humans: identification of biomarkers and individual variability
  10. Bioavailability of ellagic acid in human plasma after consumption of ellagitannins from pomegranate (Punica granatum L.) juice
  11. Pomegranate juice ellagitannin metabolites are present in human plasma and some persist in urine for up to 48 hours
  12. Identification of urolithin a as a metabolite produced by human colon microflora from ellagic acid and related compounds
  13. Assessment of antioxidant, anti-inflammatory, anti-cholinesterase and cytotoxic activities of pomegranate (Punica granatum) leaves
  14. [Effects of pomegranate tannins on experimental gastric damages]
  15. The inhibition of gastric mucosal injury by Punicagranatum L. (pomegranate) methanolic extract
  16. In vitro gastrointestinal digestion study of pomegranate juice phenolic compounds, anthocyanins, and vitamin C
  17. Anti-inflammatory properties of a pomegranate extract and its metabolite urolithin-A in a colitis rat model and the effect of colon inflammation on phenolic metabolism
  18. The influence of pomegranate by-product and punicalagins on selected groups of human intestinal microbiota
  19. Protective effect of ellagic acid, a natural polyphenolic compound, in a murine model of Crohn's disease
  20. Anti-inflammatory effects of pomegranate (Punica granatum L.) husk ellagitannins in Caco-2 cells, an in vitro model of human intestine
  21. NF-kappaB-dependent anti-inflammatory activity of urolithins, gut microbiota ellagic acid-derived metabolites, in human colonic fibroblasts
  22. Inhibitory effect of pomegranate on intestinal sodium dependent glucose uptake
  23. Potential risks resulting from fruit/vegetable-drug interactions: effects on drug-metabolizing enzymes and drug transporters
  24. Pomegranate seed extract attenuates chemotherapy-induced acute nephrotoxicity and hepatotoxicity in rats
  25. Pomegranate flower ameliorates fatty liver in an animal model of type 2 diabetes and obesity
  26. Punica granatum (pomegranate) flower extract possesses potent antioxidant activity and abrogates Fe-NTA induced hepatotoxicity in mice
  27. Pomegranate-mediated chemoprevention of experimental hepatocarcinogenesis involves Nrf2-regulated antioxidant mechanisms
  28. Pomegranate seed oil, a rich source of punicic acid, prevents diet-induced obesity and insulin resistance in mice
  29. Pomegranate phytoconstituents blunt the inflammatory cascade in a chemically induced rodent model of hepatocellular carcinogenesis
  30. Tannin 1-alpha-O-galloylpunicalagin induces the calcium-dependent activation of endothelial nitric-oxide synthase via the phosphatidylinositol 3-kinase/Akt pathway in endothelial cells
  31. Effects of a pomegranate fruit extract rich in punicalagin on oxidation-sensitive genes and eNOS activity at sites of perturbed shear stress and atherogenesis
  32. Pomegranate juice consumption inhibits serum angiotensin converting enzyme activity and reduces systolic blood pressure
  33. Antioxidants for hypertension
  34. Combination oral antioxidant supplementation reduces blood pressure
  35. Effect of pomegranate juice on Angiotensin II-induced hypertension in diabetic Wistar rats
  36. Studies on the Cytotoxic Activities of Punica granatum L. var. spinosa (Apple Punice) Extract on Prostate Cell Line by Induction of Apoptosis
  37. Phase II study of pomegranate juice for men with rising prostate-specific antigen following surgery or radiation for prostate cancer
  38. A randomized phase II study of pomegranate extract for men with rising PSA following initial therapy for localized prostate cancer
  39. Antiproliferative effects of pomegranate extract in MCF-7 breast cancer cells are associated with reduced DNA repair gene expression and induction of double strand breaks
  40. Efficacy of a herbal extract gel in the treatment of gingivitis: A clinical study
  41. Pomegranate materials inhibit flagellin gene expression and flagellar-propelled motility of uropathogenic Escherichia coli strain CFT073
  42. Priapism, pomegranate juice, and sildenafil: Is there a connection?
  43. Effects of pomegranate juice on human cytochrome P450 2C9 and tolbutamide pharmacokinetics in rats
  44. In vitro biotransformation of sildenafil (Viagra): identification of human cytochromes and potential drug interactions
  45. Toxicological evaluation of pomegranate seed oil
  46. Studies on the toxicity of Punica granatum L. (Punicaceae) whole fruit extracts
  47. Safety assessment of pomegranate fruit extract: acute and subchronic toxicity studies


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