ArticleActa pharmacologica Sinica2016
Trimer procyanidin oligomers contribute to the protective effects of cinnamon extracts on pancreatic β-cells in vitro.
Article in Acta pharmacologica Sinica, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 42 citations in OpenAlex.
- Targeted Regulation of Pancreatic Islet Function by Natural Products Against Type 2 Diabetes Mellitus: Advances and Prospects.Biomolecules · 2026Review
- Challenges in melanoma research and increased melanoma risk call for novel methodological and therapeutic/protective strategies: the case of procyanidin C1 targeting redox metabolism.Frontiers in pharmacology · 2026Article
- Article
- The flavonoid procyanidin C1 has senotherapeutic activity and increases lifespan in mice.Nature metabolism · 2021Article
- Neuroprotective Effects of B-Type Cinnamon Procyanidin Oligomers on MPPMolecules (Basel, Switzerland) · 2021Article
- Growth Performance, Serum Biochemical Indices, Duodenal Histomorphology, and Cecal Microbiota of Broiler Chickens Fed on Diets Supplemented with Cinnamon Bark Powder at Prestarter and Starter Phases.Animals : an open access journal from MDPI · 2021Article
- Procyanidin B2 Alleviates Palmitic Acid-Induced Injury in HepG2 Cells via Endoplasmic Reticulum Stress Pathway.Evidence-based complementary and alternative medicine : eCAM · 2021Article
- Paraventricular Nucleus Infusion of Oligomeric Proantho Cyanidins Improves Renovascular Hypertension.Frontiers in neuroscience · 2021Article
- Network Analyses Based on Machine Learning Methods to Quantify Effects of Peptide-Protein Complexes as Drug Targets Using Cinnamon in Cardiovascular Diseases and Metabolic Syndrome as a Case Study.Frontiers in genetics · 2021Article
- Proanthocyanidins Should Be a Candidate in the Treatment of Cancer, Cardiovascular Diseases and Lipid Metabolic Disorder.Molecules (Basel, Switzerland) · 2020Review
- Screening active components fromPharmaceutical biology · 2020Article
- Bilberry (Antioxidants (Basel, Switzerland) · 2020Article
- Inhibition of heparanase protects against pancreatic beta cell death in streptozotocin-induced diabetic mice via reducing intra-islet inflammatory cell infiltration.British journal of pharmacology · 2020Article
- Review
- Proanthocyanidins of Natural Origin: Molecular Mechanisms and Implications for Lipid Disorder and Aging-Associated Diseases.Advances in nutrition (Bethesda, Md.) · 2019Review
- Enhancement of Berberine Hypoglycemic Activity by Oligomeric Proanthocyanidins.Molecules (Basel, Switzerland) · 2018Article
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Authors and funding
9 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
aimCinnamon extracts rich in procyanidin oligomers have shown to improve pancreatic β-cell function in diabetic db/db mice. The aim of this study was to identify the active compounds in extracts from two species of cinnamon responsible for the pancreatic β-cell protection in vitro.
methodsCinnamon extracts were prepared from Cinnamomum tamala (CT-E) and Cinnamomum cassia (CC-E). Six compounds procyanidin B2 (cpd1), (-)-epicatechin (cpd2), cinnamtannin B1 (cpd3), procyanidin C1 (cpd4), parameritannin A1 (cpd5) and cinnamtannin D1 (cpd6) were isolated from the extracts. INS-1 pancreatic β-cells were exposed to palmitic acid (PA) or H2O2 to induce lipotoxicity and oxidative stress. Cell viability and apoptosis as well as ROS levels were assessed. Glucose-stimulated insulin secretion was examined in PA-treated β-cells and murine islets.
resultsCT-E, CC-E as well as the compounds, except cpd5, did not cause cytotoxicity in the β-cells up to the maximum dosage using in this experiment. CT-E and CC-E (12.5-50 μg/mL) dose-dependently increased cell viability in both PA- and H2O2-treated β-cells, and decreased ROS accumulation in H2O2-treated β-cells. CT-E caused more prominent β-cell protection than CC-E. Furthermore, CT-E (25 and 50 μg/mL) dose-dependently increased glucose-stimulated insulin secretion in PA-treated β-cells and murine islets, but CC-E had little effect. Among the 6 compounds, trimer procyanidins cpd3, cpd4 and cpd6 (12.5-50 μmol/L) dose-dependently increased the cell viability and decreased ROS accumulation in H2O2-treated β-cells. The trimer procyanidins also increased glucose-stimulated insulin secretion in PA-treated β-cells.
conclusionTrimer procyanidins in the cinnamon extracts contribute to the pancreatic β-cell protection, thus to the anti-diabetic activity.
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