Cinnamtannin A2

Cinnamtannin A2, a tetrameric procyanidin, can increases GLP-1 and insulin secretion in mice. Cinnamtannin A2 could upregulate the expression of corticotrophin releasing hormone. Cinnamtannin A2 exhibits antioxidant, anti-diabetic and nephroprotective effect[1][2].

Signaling Pathways >> Others >> Others

Research Areas >> Metabolic Disease

Cinnamtannin A2 (0.125-2.0 μg/mL) inhibits LDL oxidation induced by copper ions or MeO-AMVN[3].

Cinnamtannin A2 (10 mg/kg; i.p. for 30 days) ameliorates the level of KIM1 and NAGL in 5/6 nephractomized rats by regulating Nrf2- Keap1 pathway[2]. Cinnamtannin A2 (10 μg/kg; p.o.) increases the secretion of insulin and glucagon-like peptide-1 (GLP-1) in plasma of mice[1]. Cinnamtannin A2 (10 μg/kg; p.o.) significantly promotes phosphorylation of both IRB and IRS-1 in mice[1]. Animal Model: Male Sprague-Dawley rats (250-300 g) were induced chronic renal failure (CRF) by removing the kidneys[2] Dosage: 10 mg/kg Administration: I.p. for 30 days Result: Ameliorated the altered level of creatinine, blood urea nitrogen, Neutrophil gelatinase-associated lipocalin, Kidney Injury Molecule-1 and cytokines in the serum and microalbuminurea. Reduced the oxidative stress level. Attenuated the altered expression of proteins involved in Nrf2-Keap1 pathway in the kidney tissue. Reduced the tubular injury score in the kidney tissue.

[1]. Yamashita Y, et, al. Cinnamtannin A2, a tetrameric procyanidin, increases GLP-1 and insulin secretion in mice. Biosci Biotechnol Biochem. 2013;77(4):888-91.

[2]. Li N, et, al. Cinnamtannin A2 protects the renal injury by attenuates the altered expression of kidney injury molecule 1 (KIM-1) and neutrophil gelatinase-associated lipocalin (NGAL) expression in 5/6 nephrectomized rat model. AMB Express. 2020 May 8;10(1):87.

[3]. Osakabe N, et, al. Catechins and their oligomers linked by C4 --> C8 bonds are major cacao polyphenols and protect low-density lipoprotein from oxidation in vitro. Exp Biol Med (Maywood). 2002 Jan;227(1):51-6.