Proanthocyanidins (PAs), also known as condensed tannins, are a class of polyphenols found in a variety of plants. They are very Solidful antioxidants that remove harmful free oxygen radicals from cells.
In vitro
Proanthocyanidins have also been shown to inhibit lipid peroxidation, platelet aggregation, capillary permeability and fragility. They have been shown to modulate the activity of regulatory enzymes including cyclooxygenase, lipooxygenase, protein kinase C, angiotensin-converting enzyme, hyaluronidase enzyme and cytochrome P450 activities.
In vivo
Proanthocyanidins have been shown to play important roles in several biological processes resulting in health benefits. For instance, proanthocyanidins have been reported to have antioxidant, anti-inflammatory, antimicrobial, antiproliferative, cardioprotective, hypolipidemic and antidiabetic activities. Proanthocyanidins induce a strong hypotriglyceridemic effect in experimental animals, in part by inhibiting VLDL secretion by the liver. Animal studies demonstrate that proanthocyanidins reduce the plasma levels of atherogenic apolipoprotein B-triglyceride-rich lipoproteins and LDL-cholesterol but increase antiatherogenic HDL-cholesterol. Proanthocyanidins are thought to be poorly absorbable and highly metabolized by gut microflora before absorption. They affects lipid metabolism and has important positive consequences on cardiovascular diseases.
2.Xintao Gao, Yulan Yin, Shuai Liu, Kehong Dong, Jing Wang, Chuanlong Guo. (2023) Fucoidan-proanthocyanidins nanoparticles protect against cisplatin-induced acute kidney injury by activating mitophagy and inhibiting mtDNA-cGAS/STING signaling pathway. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 245 (125541). [PMID:37355076]
3.Lin Yamei, Zhi Hongxin, Liu Shengkai, Chen Boyu, Fu Yujie, Liu Zhiguo. (2023) Green synthesis, characterization and application on the proanthocyanidins-functionalized Fe3O4 @ Ag nanoparticles. CHEMICAL PAPERS, 77 (4):(2115-2124). [PMID:]
4.Yao Fan, Siying Che, Lei Zhang, Chunsong Zhou, Haiyan Fu, Yuanbin She. (2022) Dual channel sensor array based on ZnCdSe QDs – KMnO4: An effective tool for analysis of catechins and green teas. FOOD RESEARCH INTERNATIONAL, 160 (111734). [PMID:36076421]
5.Chao Song, Chao Gao, Zhenxin Wang. (2022) Grape-Seed-Derived Procyanidin Attenuates Chemotherapy-Induced Cognitive Impairment by Suppressing MMP-9 Activity and Related Blood–Brain-Barrier Damage. Brain Sciences, 12 (5):(571). [PMID:35624958]
2.Xintao Gao, Yulan Yin, Shuai Liu, Kehong Dong, Jing Wang, Chuanlong Guo. (2023) Fucoidan-proanthocyanidins nanoparticles protect against cisplatin-induced acute kidney injury by activating mitophagy and inhibiting mtDNA-cGAS/STING signaling pathway. INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES, 245 (125541). [PMID:37355076]
3.Lin Yamei, Zhi Hongxin, Liu Shengkai, Chen Boyu, Fu Yujie, Liu Zhiguo. (2023) Green synthesis, characterization and application on the proanthocyanidins-functionalized Fe3O4 @ Ag nanoparticles. CHEMICAL PAPERS, 77 (4):(2115-2124). [PMID:]
4.Yao Fan, Siying Che, Lei Zhang, Chunsong Zhou, Haiyan Fu, Yuanbin She. (2022) Dual channel sensor array based on ZnCdSe QDs – KMnO4: An effective tool for analysis of catechins and green teas. FOOD RESEARCH INTERNATIONAL, 160 (111734). [PMID:36076421]
5.Chao Song, Chao Gao, Zhenxin Wang. (2022) Grape-Seed-Derived Procyanidin Attenuates Chemotherapy-Induced Cognitive Impairment by Suppressing MMP-9 Activity and Related Blood–Brain-Barrier Damage. Brain Sciences, 12 (5):(571). [PMID:35624958]
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