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Lin QR, Jia LQ, Lei M, Gao D, Zhang N, Sha L, Liu XH, Liu YD. Natural products as pharmacological modulators of mitochondrial dysfunctions for the treatment of diabetes and its complications: An update since 2010. Pharmacol Res 2024; 200:107054. [PMID: 38181858 DOI: 10.1016/j.phrs.2023.107054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 12/12/2023] [Accepted: 12/31/2023] [Indexed: 01/07/2024]
Abstract
Diabetes, characterized as a well-known chronic metabolic syndrome, with its associated complications pose a substantial and escalating health and healthcare challenge on a global scale. Current strategies addressing diabetes are mainly symptomatic and there are fewer available curative pharmaceuticals for diabetic complications. Thus, there is an urgent need to identify novel pharmacological targets and agents. The impaired mitochondria have been associated with the etiology of diabetes and its complications, and the intervention of mitochondrial dysfunction represents an attractive breakthrough point for the treatments of diabetes and its complications. Natural products (NPs), with multicenter characteristics, multi-pharmacological activities and lower toxicity, have been caught attentions as the modulators of mitochondrial functions in the therapeutical filed of diabetes and its complications. This review mainly summarizes the recent progresses on the potential of 39 NPs and 2 plant-extracted mixtures to improve mitochondrial dysfunction against diabetes and its complications. It is expected that this work may be useful to accelerate the development of innovative drugs originated from NPs and improve upcoming therapeutics in diabetes and its complications.
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Affiliation(s)
- Qian-Ru Lin
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Lian-Qun Jia
- Key Laboratory of Ministry of Education for TCM Viscera-State Theory and Applications, Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning 116600, China
| | - Ming Lei
- Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China
| | - Di Gao
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Nan Zhang
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Lei Sha
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China
| | - Xu-Han Liu
- Department of Endocrinology, Dalian Municipal Central Hospital, Dalian, Liaoning 116033, China.
| | - Yu-Dan Liu
- Department of Neuroendocrine Pharmacology, School of Pharmacy, China Medical University, Shenyang, Liaoning 110122, China.
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Chen J, Zhong K, Jing Y, Liu S, Qin S, Peng F, Li D, Peng C. Procyanidin B2: A promising multi-functional food-derived pigment for human diseases. Food Chem 2023; 420:136101. [PMID: 37059021 DOI: 10.1016/j.foodchem.2023.136101] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 03/19/2023] [Accepted: 03/31/2023] [Indexed: 04/16/2023]
Abstract
Natural edible pigments play a paramount part in the food industry. Procyanidin B2 (PB2), one of the most representative naturally occurring edible pigments, is usually isolated from the seeds, fruits, and leaves of lots of common plants, such as grapes, Hawthorn, black soybean, as well as blueberry, and functions as a food additive in daily life. Notably, PB2 has numerous bioactivities and possesses the potential to treat/prevent a wide range of human diseases, such as diabetes mellitus, diabetic complications, atherosclerosis, and non-alcoholic fatty liver disease, and the underlying mechanisms were partially elucidated, including mediating signaling pathways like NF-κB, MAPK, PI3K/Akt, apoptotic axis, and Nrf-2/HO-1. This paper presents a review of the natural sources, bioactivities, and the therapeutic/preventive potential of PB2 and the possible mechanisms, with the aim of promoting the development of PB2 as a functional food and providing references for its clinical application in the treatment of diseases.
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Affiliation(s)
- Junren Chen
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Kexin Zhong
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yiqi Jing
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shengmeng Liu
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Siqi Qin
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fu Peng
- Department of Pharmacology, Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, China.
| | - Dan Li
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
| | - Cheng Peng
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China, Chengdu University of Traditional Chinese Medicine, Chengdu, China.
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Yin J, Wang K, Zhu X, Lu G, Jin D, Qiu J, Zhou F. Procyanidin B2 suppresses hyperglycemia‑induced renal mesangial cell dysfunction by modulating CAV‑1‑dependent signaling. Exp Ther Med 2022; 24:496. [PMID: 35837062 PMCID: PMC9257762 DOI: 10.3892/etm.2022.11423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/27/2022] [Indexed: 11/06/2022] Open
Abstract
The dysfunction of renal mesangial cells (MCs) is a hallmark of diabetic kidney disease (DKD), which triggers glomerulosclerosis leading to end-stage renal disease. Procyanidin B2 (PB2), the main component of proanthocyanidin, is well known for its antioxidant and anti-inflammatory effects; however, it remains unclear as to whether it has protective effects on DKD. The present study investigated the protective effect of PB2 against hyperglycemia-induced renal MC dysfunction in mouse SV40-Mes13 (Mes13) cells. The Mes13 cells were treated with or without PB2 under HG conditions. Cell proliferation was assessed using an MTT assay and oxidative stress was assessed by examining intracellular ROS generation and H2O2 production. The changes in extracellular matrix accumulation- and cellular inflammation-related proteins were measured by western blot analysis, ELISA and immunofluorescence analysis. The results showed that PB2 treatment markedly attenuated hyperglycemia-induced cell proliferation, oxidative stress, extracellular matrix accumulation and cellular inflammation in Mes13 cells, which was accompanied by an inactivation of redoxosomes, TGF-β1/SMAD and IL-1β/TNF-α/NF-κB signaling pathways. The present study also demonstrated that hyperglycemia upregulated and activated caveolin-1 (CAV-1), whereas PB2 treatment potently reversed this effect. In accordance, CAV-1 overexpression abolished the protective effects of PB2 against hyperglycemia in Mes13 cells, indicating that the cytoprotective effect of PB2 was CAV-1-dependent. These findings form the basis of the potential clinical applications of PB2 in the treatment of DKD.
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Affiliation(s)
- Jun Yin
- Department of Nephrology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Ke Wang
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu 214063, P.R. China
| | - Xue Zhu
- NHC Key Laboratory of Nuclear Medicine, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, Jiangsu 214063, P.R. China
| | - Guoyuan Lu
- Department of Nephrology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, P.R. China
| | - Donghua Jin
- Department of Nephrology, People's Hospital of Suzhou New District, Suzhou, Jiangsu 215129, P.R. China
| | - Junsi Qiu
- Department of Nephrology, The Affiliated Wuxi No.2 People's Hospital of Nanjing Medical University, Wuxi, Jiangsu 214002, P.R. China
| | - Fanfan Zhou
- Sydney Pharmacy School, The University of Sydney, Sydney, New South Wales A-2006, Australia
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Geoffroy K, Laplante P, Clairefond S, Azzi F, Trudel D, Lattouf JB, Stagg J, Saad F, Mes-Masson AM, Bourgeois-Daigneault MC, Cailhier JF. High Levels of MFG-E8 Confer a Good Prognosis in Prostate and Renal Cancer Patients. Cancers (Basel) 2022; 14:cancers14112790. [PMID: 35681775 PMCID: PMC9179566 DOI: 10.3390/cancers14112790] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/19/2022] [Accepted: 06/02/2022] [Indexed: 11/23/2022] Open
Abstract
Simple Summary In the present study, we analyzed the distribution and prognostic impact of milk fat globule-epidermal growth factor-8 (MFG-E8) protein expression in patients with prostate and renal cancers. Our data highlighted MFG-E8 expression by tumor cells in the epithelium. Our results also showed that low levels of MFG-E8 in prostate and renal cancers were associated with worse clinical outcomes. Furthermore, higher numbers of CD206+ cells were found in the peripheral regions of renal clear cell carcinoma that expressed lower MFG-E8 levels. Globally, our results suggest that MFG-E8 expression could potentially be used as a prognostic marker in prostate and renal cancers. Abstract Milk fat globule-epidermal growth factor-8 (MFG-E8) is a glycoprotein secreted by different cell types, including apoptotic cells and activated macrophages. MFG-E8 is highly expressed in a variety of cancers and is classically associated with tumor growth and poor patient prognosis through reprogramming of macrophages into the pro-tumoral/pro-angiogenic M2 phenotype. To date, correlations between levels of MFG-E8 and patient survival in prostate and renal cancers remain unclear. Here, we quantified MFG-E8 and CD68/CD206 expression by immunofluorescence staining in tissue microarrays constructed from renal (n = 190) and prostate (n = 274) cancer patient specimens. Percentages of MFG-E8-positive surface area were assessed in each patient core and Kaplan–Meier analyses were performed accordingly. We found that MFG-E8 was expressed more abundantly in malignant regions of prostate tissue and papillary renal cell carcinoma but was also increased in the normal adjacent regions in clear cell renal carcinoma. In addition, M2 tumor-associated macrophage staining was increased in the normal adjacent tissues compared to the malignant areas in renal cancer patients. Overall, high tissue expression of MFG-E8 was associated with less disease progression and better survival in prostate and renal cancer patients. Our observations provide new insights into tumoral MFG-E8 content and macrophage reprogramming in cancer.
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Affiliation(s)
- Karen Geoffroy
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
| | - Patrick Laplante
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
| | - Sylvie Clairefond
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
| | - Feryel Azzi
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Division of Pathology and Cellular Biology, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Dominique Trudel
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Division of Pathology and Cellular Biology, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Jean-Baptiste Lattouf
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Division of Urology, Department of Surgery, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - John Stagg
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Faculté de Pharmacie, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Fred Saad
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Division of Urology, Department of Surgery, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Anne-Marie Mes-Masson
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Department of Medicine, Faculté de Médecine, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Marie-Claude Bourgeois-Daigneault
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Department de Microbiologie, Infectiologie et Immunologie, Faculté de Médecine, Université de Montréal, Montreal, QC H3C 3J7, Canada
| | - Jean-François Cailhier
- Institut du Cancer de Montréal (ICM), Centre de Recherche du Centre Hospitalier de l’Université de Montréal (CRCHUM), Montreal, QC H2X 0A9, Canada; (K.G.); (P.L.); (S.C.); (F.A.); (D.T.); (J.-B.L.); (J.S.); (F.S.); (A.-M.M.-M.); (M.-C.B.-D.)
- Department of Medicine, Faculté de Médecine, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Division of Nephrology, Department of Medicine, Université de Montréal, Montreal, QC H3C 3J7, Canada
- Correspondence: ; Tel.: +1-514-890-8000-x25971; Fax: +1-514-412-7938
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Leng F, Zhou J, Wang C, Sun L, Zhang Y, Li Y, Wang L, Wang S, Zhang X, Xie Z. Post-veraison different frequencies of water deficit strategies enhance Reliance grapes quality under root restriction. Food Chem 2022; 390:133181. [PMID: 35567977 DOI: 10.1016/j.foodchem.2022.133181] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 04/27/2022] [Accepted: 05/05/2022] [Indexed: 11/04/2022]
Abstract
In this study, two water deficit treatments in the same amount of water but with different frequencies (T1: 2.5 L per 4 d and T2: 5 L per 8 d) were performed on Reliance grapevines from veraison until harvest to explore their effects on grape berries quality under root restriction. Results showed that glucose, fructose and sucrose contents were increased, while malic acid, tartaric acid and citric acid contents were decreased under two treatments. Meanwhile, water deficits also promoted the accumulation of phenylalanine and proline. For phenols, anthocyanins, resveratrol and flavonols contents in the water deficit groups were significantly higher than those in the control group. In addition, two water deficit treatments increased the characteristic aromas contents, especially the esters contents. Overall, T2 treatment had a better effect than T1 treatment. This study provided an idea for improving water use efficiency and grape quality.
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Affiliation(s)
- Feng Leng
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, PR China
| | - Jialing Zhou
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, PR China
| | - Chengyang Wang
- Zhoushan Academy of Agricultural Sciences, Zhejiang 316000, PR China
| | - Liping Sun
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, PR China
| | - Yue Zhang
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, PR China
| | - Youmei Li
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, PR China
| | - Lei Wang
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Shiping Wang
- Department of Plant Science, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xianan Zhang
- Forestry and Fruit Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China.
| | - Zhaosen Xie
- College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, PR China.
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Xu M, Chen X, Huang Z, Chen D, Yu B, He J, Chen H, Yu J, Luo Y, Zheng P. Procyanidin B2 induces porcine skeletal slow-twitch myofiber gene expression by AMP-activated protein kinase signaling pathway. Anim Biotechnol 2021; 33:346-355. [PMID: 34061706 DOI: 10.1080/10495398.2021.1927065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
In this study, our aim is to investigate the effect of dimer procyanidin B2 [epicatechin-(4β-8)-epicatechin] (PB2) on porcine skeletal myofiber gene expression in vitro. Our data showed PB2 promoted the protein expression of slow myosin heavy chain (MyHC) in porcine myotubes, concomitant with the increases in mRNA levels of MyHC I, MyHC IIa and Tnni1. We also found PB2 activated AMPK signaling in porcine myotubes. NRF1 and CaMKKβ that are two important upstream factors of AMPK, and Sirt1 and PGC-1α that are two major downstream factors of AMPK, were also up-regulated by PB2. The mechanism study showed the effect of PB2 on slow-twitch myofiber gene expression was abolished by AMPK inhibitor compound C or by AMPKα1 siRNA. Together, we found PB2 induced porcine skeletal slow-twitch myofiber gene expression by AMPK signaling pathway.
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Affiliation(s)
- Meng Xu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Xiaoling Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Zhiqing Huang
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Daiwen Chen
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Bing Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Jun He
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Hong Chen
- College of Food Science, Sichuan Agricultural University, Yaan, Sichuan, P. R. China
| | - Jie Yu
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Yuheng Luo
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
| | - Ping Zheng
- Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, P. R. China
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Chiang HY, Chu PH, Chen SC, Lee TH. MFG-E8 Regulates Vascular Smooth Muscle Cell Migration Through Dose-Dependent Mediation of Actin Polymerization. J Am Heart Assoc 2021; 10:e020870. [PMID: 34041925 PMCID: PMC8483510 DOI: 10.1161/jaha.121.020870] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Migration of vascular smooth muscle cells (VSMCs) is the main contributor to neointimal formation. The Arp2/3 (actin-related proteins 2 and 3) complex activates actin polymerization and is involved in lamellipodia formation during VSMC migration. Milk fat globule-epidermal growth factor 8 (MFG-E8) is a glycoprotein expressed in VSMCs. We hypothesized that MFG-E8 regulates VSMC migration through modulation of Arp2/3-mediated actin polymerization. Methods and Results To determine whether MFG-E8 is essential for VSMC migration, a model of neointimal hyperplasia was induced in the common carotid artery of wild-type and MFG-E8 knockout mice, and the extent of neointimal formation was evaluated. Genetic deletion of MFG-E8 in mice attenuated injury-induced neointimal hyperplasia. Cultured VSMCs deficient in MFG-E8 exhibited decreased cell migration. Immunofluorescence and immunoblotting revealed decreased Arp2 but not Arp3 expression in the common carotid arteries and VSMCs deficient in MFG-E8. Exogenous administration of recombinant MFG-E8 biphasically and dose-dependently regulated the cultured VSMCs. At a low concentration, MFG-E8 upregulated Arp2 expression. By contrast, MFG-E8 at a high concentration reduced the Arp2 level and significantly attenuated actin assembly. Arp2 upregulation mediated by low-dose MFG-E8 was abolished by treating cultured VSMCs with β1 integrin function-blocking antibody and Rac1 inhibitors. Moreover, treatment of the artery with a high dose of recombinant MFG-E8 diminished injury-induced neointimal hyperplasia and reduced VSMC migration. Conclusions MFG-E8 plays a critical role in VSMC migration through dose-dependent regulation of Arp2-mediated actin polymerization. These findings suggest that high doses of MFG-E8 may have therapeutic potential for treating vascular occlusive diseases.
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Affiliation(s)
- Hou-Yu Chiang
- Department of Anatomy College of Medicine Chang Gung University Taoyuan Taiwan.,Graduate Institute of Biomedical Sciences College of Medicine Chang Gung University Taoyuan Taiwan.,Division of Cardiology Department of Internal Medicine Chang Gung Memorial Hospital Linkou Taiwan
| | - Pao-Hsien Chu
- Division of Cardiology Department of Internal Medicine Chang Gung Memorial Hospital Linkou Taiwan.,College of Medicine Chang Gung University Taoyuan Taiwan
| | - Shao-Chi Chen
- Department of Anatomy College of Medicine Chang Gung University Taoyuan Taiwan
| | - Ting-Hein Lee
- Department of Anatomy College of Medicine Chang Gung University Taoyuan Taiwan.,Graduate Institute of Biomedical Sciences College of Medicine Chang Gung University Taoyuan Taiwan.,Division of Cardiology Department of Internal Medicine Chang Gung Memorial Hospital Linkou Taiwan
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Yan LJ. NADH/NAD + Redox Imbalance and Diabetic Kidney Disease. Biomolecules 2021; 11:biom11050730. [PMID: 34068842 PMCID: PMC8153586 DOI: 10.3390/biom11050730] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/11/2022] Open
Abstract
Diabetic kidney disease (DKD) is a common and severe complication of diabetes mellitus. If left untreated, DKD can advance to end stage renal disease that requires either dialysis or kidney replacement. While numerous mechanisms underlie the pathogenesis of DKD, oxidative stress driven by NADH/NAD+ redox imbalance and mitochondrial dysfunction have been thought to be the major pathophysiological mechanism of DKD. In this review, the pathways that increase NADH generation and those that decrease NAD+ levels are overviewed. This is followed by discussion of the consequences of NADH/NAD+ redox imbalance including disruption of mitochondrial homeostasis and function. Approaches that can be applied to counteract DKD are then discussed, which include mitochondria-targeted antioxidants and mimetics of superoxide dismutase, caloric restriction, plant/herbal extracts or their isolated compounds. Finally, the review ends by pointing out that future studies are needed to dissect the role of each pathway involved in NADH-NAD+ metabolism so that novel strategies to restore NADH/NAD+ redox balance in the diabetic kidney could be designed to combat DKD.
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Affiliation(s)
- Liang-Jun Yan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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9
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Ni YQ, Zhan JK, Liu YS. Roles and mechanisms of MFG-E8 in vascular aging-related diseases. Ageing Res Rev 2020; 64:101176. [PMID: 32971257 DOI: 10.1016/j.arr.2020.101176] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 08/17/2020] [Accepted: 09/03/2020] [Indexed: 12/20/2022]
Abstract
The aging of the vasculature plays a crucial role in the pathological progression of various vascular aging-related diseases. As endothelial cells (ECs) and vascular smooth muscle cells (VSMCs) are essential parts in the inner and medial layers of vessel wall, respectively, the structural and functional alterations of ECs and VSMCs are the major causes of vascular aging. Milk fat globule-epidermal growth factor 8 (MFG-E8) is a multifunctional glycoprotein which exerts a regulatory role in the intercellular interactions involved in a variety of biological and pathological processes. Emerging evidence suggests that MFG-E8 is a novel and outstanding modulator for vascular aging via targeting at ECs and VSMCs. In this review, we will summarise the cumulative roles and mechanisms of MFG-E8 in vascular aging and vascular aging-related diseases with special emphasis on the functions of ECs and VSMCs. In addition, we also aim to focus on the promising diagnostic function as a biomarker and the potential therapeutic application of MFG-E8 in vascular aging and the clinical evaluation of vascular aging-related diseases.
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10
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Health Effects of Grape Seed and Skin Extracts and Their Influence on Biochemical Markers. Molecules 2020; 25:molecules25225311. [PMID: 33202575 PMCID: PMC7696942 DOI: 10.3390/molecules25225311] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/11/2020] [Accepted: 11/12/2020] [Indexed: 11/17/2022] Open
Abstract
This review is focused on the study of the effects of grape seed and skin extract (GSSE) on human health. GSSE contains high concentrations of important polyphenolic substances with high biological activity. This review is a summary of studies that investigate the effects of GSSE on diabetes mellitus, cardiovascular disease and cancer, its neuroprotective effect, and its effects on the gastrointestinal tract and other health complications related to these diseases. The results of the studies confirm that the anti-inflammatory, antiapoptotic, and pro-proliferative effects of “Vitis vinifera L.” seed extract reduce the level of oxidative stress and improve the overall lipid metabolism.
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Álvarez-Cilleros D, López-Oliva ME, Martín MÁ, Ramos S. Cocoa ameliorates renal injury in Zucker diabetic fatty rats by preventing oxidative stress, apoptosis and inactivation of autophagy. Food Funct 2020; 10:7926-7939. [PMID: 31773121 DOI: 10.1039/c9fo01806a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Redox balance, autophagy and apoptosis are main processes involved in the development of diabetic nephropathy. Epidemiological and animal studies suggest that cocoa might reduce the risk of diabetic complications. However, the molecular mechanisms responsible for these potential preventive activities and whether cocoa exerts beneficial effects on dysregulated signalling pathways involved in cellular antioxidant defence, autophagy and apoptosis in the diabetic kidney remain largely unknown. Therefore, this work investigated the effect of a cocoa-rich diet on the mentioned processes in the renal cortex of Zucker Diabetic Fatty (ZDF) rats. Male ZDF rats were fed either a control or cocoa-rich diet (10%), and Zucker lean animals received the control diet (10-20 weeks-of-life). ZDF rats fed with cocoa decreased body weight and glucose and insulin levels, and improved renal function. Cocoa intake further prevented the enhanced renal cortical oxidative stress in diabetic rats by regulating the antioxidant defence system and close-related proteins to cytoprotection and cell response; thus, cocoa diminished oxidative markers (reactive oxygen species and carbonyl groups) and NADPH-oxidase-4 levels, and restored key enzymatic antioxidant activities (superoxide dismutase and catalase), nuclear-erythroid-2-related factor-2, and ERK-MAPK levels, as well as sirtuin-1/5'-AMP-activated-protein kinase signalling. Moreover, in ZDF rats cocoa-rich diet contributed to alleviation of the renal cortical injury through autophagy activation (p62 upregulation, and downregulation of beclin-1 and LC3), and inhibition of apoptosis (Bcl-xL stimulation and suppression of Bax and caspases-9 and -3). These findings provide the first in vivo evidence on the molecular mechanisms of cocoa to circumvent renal cortical damage that involve improvement of antioxidant competences, stimulation of autophagy and suppression of apoptosis in ZDF rats.
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Affiliation(s)
- David Álvarez-Cilleros
- Department of Metabolism and Nutrition, Institute of Food Science and Technology and Nutrition (ICTAN), Consejo Superior de Investigaciones Científicas (CSIC), José Antonio Novais 10, Ciudad Universitaria, 28040 Madrid, Spain.
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Inactivation of TSC1 promotes epithelial-mesenchymal transition of renal tubular epithelial cells in mouse diabetic nephropathy. Acta Pharmacol Sin 2019; 40:1555-1567. [PMID: 31235817 PMCID: PMC7468253 DOI: 10.1038/s41401-019-0244-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Accepted: 04/25/2019] [Indexed: 02/06/2023] Open
Abstract
Epithelial–mesenchymal transition (EMT) of renal tubular epithelial cells is one of the potential mechanisms of renal fibrosis, which promotes the development of diabetic nephropathy (DN). However, the molecular mechanisms of EMT remain largely unknown. Tuberous sclerosis proteins TSC1 and TSC2 are key integrators of growth factor signaling, and the loss of TSC1 or TSC2 function leads to a spectrum of diseases that underlie abnormalities in cell growth, proliferation, differentiation, and migration. In this study, we investigated the effects of TSC1 on high glucose (HG)-induced EMT of human proximal tubular epithelial HK-2 cells in vitro and renal fibrosis in TSC1−/− and db/db mice. We found that the exposure of HK-2 cells to HG (30 mM) time-dependently decreased TSC1 expression, increased the phosphorylation of mTORC1, P70S6K, and 4E-BP-1, and promoted cell migration, resulting in EMT. Transfection of the cells with TSC1 mimic significantly ameliorated HG-induced EMT of HK-2 cells. The tubules-specific TSC1 knockout mice (TSC1−/−) displayed a significant decline in renal function. TSC1−/− mice, similar to db/db mice, showed greatly activated mTORC1 signaling and EMT process in the renal cortex and exacerbated renal fibrosis. Overexpression of TSC1 through LV-TSC1 transfection significantly alleviated the progression of EMT and renal fibrosis in the renal cortex of db/db mice. Taken together, our results suggest that TSC1 plays a key role in mediating HG-induced EMT, and inhibition of TSC1-regulated mTORC1 signaling may be a potential approach to prevent renal fibrosis in DN.
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Zhang R, Yu Q, Lu W, Shen J, Zhou D, Wang Y, Gao S, Wang Z. Grape seed procyanidin B2 promotes the autophagy and apoptosis in colorectal cancer cells via regulating PI3K/Akt signaling pathway. Onco Targets Ther 2019; 12:4109-4118. [PMID: 31213831 PMCID: PMC6538883 DOI: 10.2147/ott.s195615] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 03/07/2019] [Indexed: 12/17/2022] Open
Abstract
Aim: Colorectal cancer (CRC) is a major malignancy in China, which is the critical risk of people health. Many natural herbs extracts have been found to exhibit good therapeutic effect on CRC. Our previous study found that grape seed procyanidins B2 (PB2) would induce CRC cell death. However, the molecular mechanism underlying its anti-tumor effect on CRC remains unclear. Thereby, this study aimed to investigate the anti-tumor mechanism of PB2 on CRC. Methods: CCK-8, western blotting, flow cytometry, qRT-PCR and animal study were used in the current study. Results: The in vitro and in vivo data demonstrated that PB2 could promote the apoptosis of CRC cells in a dose-dependent manner, which was significantly reversed by caspase 3 inhibitor. Meanwhile, PB2 dose-dependently induced autophagy in CRC cells, which was markedly attenuated by autophagy inhibitor 3-MA. In addition, PB2 dose-dependently inhibited the expressions of p-PI3K, p-Akt and p-mTOR in the cells. Conclusion: PB2 dose-dependently induced apoptosis and autophagy in CRC cells via downregulation of PI3K/Akt pathway. This study provided the experimental basis for further development of PB2 as a new effective anticancer drug for the patients with CRC.
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Affiliation(s)
- Ruijuan Zhang
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
| | - Qianyun Yu
- Department of TCM, Shanghai Huangpu District Wuliqiao Community Health Center, Shanghai, 200023, People's Republic of China
| | - Wenqiang Lu
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
| | - Jun Shen
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
| | - Dongqing Zhou
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
| | - Yingjue Wang
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
| | - Shurong Gao
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
| | - Zhijun Wang
- Department of TCM, Shanghai Putuo District People's Hospital, Shanghai 200060, People's Republic of China
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Nie Y, Stürzenbaum SR. Proanthocyanidins of Natural Origin: Molecular Mechanisms and Implications for Lipid Disorder and Aging-Associated Diseases. Adv Nutr 2019; 10:464-478. [PMID: 30926997 PMCID: PMC6520035 DOI: 10.1093/advances/nmy118] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/06/2018] [Accepted: 11/27/2018] [Indexed: 12/27/2022] Open
Abstract
Proanthocyanidins are phytonutrients formed by oligomerization or polymerization of subunits catechin, epicatechin, and their gallic acid esters. Proanthocyanidins are a component of many plants and thus form an integral part of the human diet. Oligomeric proanthocyanidins are currently marketed as medicinal products that target vascular disorders and chronic pathological conditions, many of which are age-associated. Proanthocyanidins are also characterized by their effects on energy homeostasis. Not dissimilar to their chemically synthesized counterparts, naturally extracted proanthocyanidins act via inhibition of lipases, stimulation of energy expenditure, or suppression of appetite. Here we review the current knowledge-base and highlight challenges and future impacts regarding involvement of proanthocyanidins in global lipid metabolism, with a focus on the molecular mechanisms and pathological conditions that progress with aging.
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Affiliation(s)
- Yu Nie
- Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
| | - Stephen R Stürzenbaum
- Department of Analytical, Environmental & Forensic Sciences, School of Population Health & Environmental Sciences, Faculty of Life Sciences & Medicine, King's College London, London, United Kingdom
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Laddha AP, Kulkarni YA. Tannins and vascular complications of Diabetes: An update. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2019; 56:229-245. [PMID: 30668344 DOI: 10.1016/j.phymed.2018.10.026] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/19/2018] [Accepted: 10/20/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Diabetes mellitus is a chronic metabolic disorder associated with persistent increased level of glucose in the blood. According to a report by World Health Organisation (WHO), prevalence of diabetes among adults over 18 years of age had reached to 8.5% in year 2014 which was 4.7% in 1980s. The Prolong increased level of glucose in blood leads to development of microvascular (blindness, nephropathy and neuropathy) and macrovascular (cardiovascular and stroke) degenerative complications because of uncontrolled level of glucose in blood. This also leads to the progression of oxidative stress and affecting metabolic, genetic and haemodynamic system by activation of polyol pathway, protein kinase C pathway, hexosamine pathway and increases advanced glycation end products (AGEs) formation. Diabetes mellitus and its associated complications are one of the major leading causes of mortality worldwide. Various natural products like alkaloids, glycosides, flavonoids, terpenoids and polyphenols are reported for their activity in management of diabetes and its associated diabetic complications. Tannins are systematically studied by many researchers in past few decades for their effect in diabetes and its complications. AIM The present review was designed to compile the data of tannins and their beneficial effects in the management of diabetic complications. METHOD Literature search was performed using various dataset like pubmed, EBSCO, proQuest Scopus and selected websites including the National Institutes of Health (NIH) and the World Health Organization (WHO). RESULTS Globally, more than 400 natural products have been investigated in diabetes and its complications. Tannins are the polyphenolic compounds present in many medicinal plants and various dietary sources like fruits, nuts, grains, spices and beverages. Various reports have shown that compounds like gallic acid, ellagic acid, catechin, epicatechin and procynidins from medicinal plants play major role in controlling progression of diabetes and its related complications by acting on molecular pathways and key targets involved in progression. Many chemists used above mentioned phyto-constituents as a pharmacophore for the developing new chemical entities having higher therapeutic benefits in management of diabetic complications. CONCLUSION This review focuses on the role of various tannins in prevention and management of diabetic complications like diabetic nephropathy, diabetic neuropathy, diabetic retinopathy and diabetic cardiomyopathy. It will help researchers to find some leads for the development of new cost effective therapy using dietary source for the management of diabetic complications.
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Affiliation(s)
- Ankit P Laddha
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400 056, India
| | - Yogesh A Kulkarni
- Shobhaben Pratapbhai Patel School of Pharmacy & Technology Management, SVKM's NMIMS, V.L. Mehta Road, Vile Parle (W), Mumbai 400 056, India.
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Comparative Metabolic Profiling of Grape Skin Tissue along Grapevine Berry Developmental Stages Reveals Systematic Influences of Root Restriction on Skin Metabolome. Int J Mol Sci 2019; 20:ijms20030534. [PMID: 30695987 PMCID: PMC6386830 DOI: 10.3390/ijms20030534] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/20/2018] [Accepted: 12/27/2018] [Indexed: 11/30/2022] Open
Abstract
This research aimed to comparatively evaluate the influences of root restriction (RR) cultivation and traditional cultivation (RC) on grape berry skin metabolomics using a non-targeted metabolomics method. Two-hundred-and-ninety-one metabolites were annotated and the kinetics analyses showed that berry skin metabolome is stage- and cultivation-dependent. Our results showed that RR influences significantly the metabolomes of berry skin tissues, particularly on secondary metabolism, and that this effect is more obvious at pre-veraison stage, which was evidenced by the early and fast metabolic shift from primary to secondary metabolism. Altogether, this study provided an insight into metabolic adaptation of berry skin to RR stress and expanded general understanding of berry development.
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Role of NADPH oxidase pathway in renal protection induced by procyanidin B2: In L-NAME induced rat hypertension model. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.04.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Wei J, Wu H, Zhang H, Li F, Chen S, Hou B, Shi Y, Zhao L, Duan H. Anthocyanins inhibit high glucose-induced renal tubular cell apoptosis caused by oxidative stress in db/db mice. Int J Mol Med 2018; 41:1608-1618. [PMID: 29328429 PMCID: PMC5819916 DOI: 10.3892/ijmm.2018.3378] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Accepted: 01/04/2018] [Indexed: 01/09/2023] Open
Abstract
Oxidative stress is an important contributory factor resulting the development of kidney injury in patients with diabetes. Numerous in vitro and in vivo studies have suggested that anthocyanins, natural phenols commonly existing in numerous fruits and vegetables, exhibit important antioxidative, anti‑inflammatory and antihyperlipidemic effects; however, their effects and underlying mechanisms on diabetic nephropathy (DN) have not yet been fully determined. In the present study, the regulation of apoptosis metabolism and antioxidative effects exhibited by anthocyanins [grape seed procyanidin (GSPE) and cyanidin‑3‑O‑β‑glucoside chloride (C3G)] were investigated, and the molecular mechanism underlying this process was investigated in vivo and in vitro. GSPE administration was revealed to suppress renal cell apoptosis, as well as suppress the expression of Bcl‑2 in diabetic mouse kidneys. Furthermore, GSPE administration was demonstrated to suppress the expression of thioredoxin interacting protein (TXNIP), in addition to enhancing p38 mitogen‑activation protein kinase (MAPK) and extracellular signal‑regulated kinase 1/2 (ERK1/2) oxidase activity in diabetic mouse kidneys. In vitro experiments using HK‑2 cells revealed that C3G suppressed the generation of HG‑mediated reactive oxygen species, cellular apoptosis, the expression of cleaved caspase‑3 and the Bax/Bcl‑2 ratio; and enhanced the expression of cytochrome c released from mitochondria. Furthermore, treatment with C3G was revealed to suppress the expression of TXNIP, in addition to the phosphorylation of p38 MAPK and ERK1/2 oxidase activity in HK‑2 cells under HG conditions. In addition, treatment with C3G was revealed to attenuate the HG‑induced suppression of the biological activity of thioredoxin, and to enhance the expression of thioredoxin 2 in HK‑2 cells under HG conditions. In conclusion, the present study demonstrated that anthocyanins may exhibit protective effects against HG‑induced renal injury in DN via antioxidant activity.
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Affiliation(s)
- Jinying Wei
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Haijiang Wu
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Haiqiang Zhang
- Department of Gastrointestinal Surgery Hernia and Abdominal Wall Surgery, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000
| | - Fang Li
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Shurui Chen
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Baohua Hou
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Yonghong Shi
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
| | - Lijuan Zhao
- School of Public Health, Hebei Medical University, Shijiazhuang, Hebei 050017, P.R. China
| | - Huijun Duan
- Department of Pathology, Hebei Medical University
- Key Laboratory of Kidney Diseases of Hebei Province, Shijiazhuang, Hebei 050017
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Yin M, Zhang P, Yu F, Zhang Z, Cai Q, Lu W, Li B, Qin W, Cheng M, Wang H, Gao H. Grape seed procyanidin B2 ameliorates hepatic lipid metabolism disorders in db/db mice. Mol Med Rep 2017; 16:2844-2850. [PMID: 28677803 DOI: 10.3892/mmr.2017.6900] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 04/27/2017] [Indexed: 11/06/2022] Open
Abstract
Diabetes is commonly associated with liver lipid metabolism disorders. AMP-activated protein kinase (AMPK) has a key role in regulating lipid metabolism. Grape seed procyanidin B2 (GSPB2), a natural polyphenol polymer, ameliorates mitochondrial dysfunction and inhibits oxidative stress or apoptosis via AMPK pathways. In the present study, the hypothesis that GSPB2 treatment may ameliorate liver lipid metabolic disorders by activating AMPK and downstream pathways was tested in diabetic mice. Db/m mice were used as controls, and diabetic db/db mice were randomly divided into 2 groups for treatment: Vehicle and GSPB2 (30 mg/kg/day for 10 weeks). Animals were weighed every week. Fasting blood was collected prior to sacrifice to measure fasting blood glucose (FBG), triglycerides (TG) and total cholesterol (TC). Hepatic TG and free fatty acid (FFA) levels were analyzed. Hepatic sections were examined by light microscopy following hematoxylin and eosin staining. The expression of hepatic AMPK, phosphorylated acetyl‑CoA carboxylase (ACC), carnitine palmitoyl transferase 1 (CPT1) and 4‑hydroxynonenal (4‑HNE) was measured by western blot analysis. Liver mitochondria were isolated to assess electron transport complex I (CI), complex II (CII) and complex IV by high-resolution respirometry. The results demonstrated that GSPB2 significantly decreased body weight and serum TG, TC and FFA levels, but not FBG levels in diabetic mice. GSPB2 visibly decreased lipid droplet accumulation in the liver and significantly reduced hepatic TG and FFA levels. In diabetic mice, GSPB2 restored liver AMPK and ACC phosphorylation, increased CPT1 protein expression, ameliorated lipid peroxidation damage, which was assessed by comparing 4‑HNE levels, and partially restored the damaged mitochondrial respiratory capacity of CI and CII in the liver. In conclusion, long‑term oral treatment with GSPB2 may benefit hepatic lipid metabolism disorders, potentially by decreasing hepatic lipid synthesis and increasing hepatic FFA β‑oxidation via the AMPK‑ACC pathway.
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Affiliation(s)
- Mei Yin
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Pei Zhang
- Department of Endocrinology, Liaocheng People's Hospital Affiliated to Taishan Medical College, Liaocheng, Shandong 252000, P.R. China
| | - Fei Yu
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Zhen Zhang
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Qian Cai
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Weida Lu
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Baoying Li
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Weidong Qin
- Department of Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Mei Cheng
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Hao Wang
- Department of Critical Care Medicine, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
| | - Haiqing Gao
- Department of Geriatrics, Qilu Hospital of Shandong University, Jinan, Shandong 250012, P.R. China
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Li Y, Ran W, Zhang J, Chen S, Li Y, Luo D, Wang C, Jia W. Elevated serum milk fat globule-epidermal growth factor 8 levels in type 2 diabetic patients are suppressed by overweight or obese status. IUBMB Life 2017; 69:63-71. [PMID: 28067023 DOI: 10.1002/iub.1592] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 12/03/2016] [Indexed: 11/07/2022]
Abstract
Inflammation is the most important link between obesity and type 2 diabetes (T2D). Although milk fat globule-epidermal growth factor 8 (MFG-E8) is a key mediator in anti-inflammatory responses, its role in obesity and diabetes is not yet completely understood. We aimed to measure MFG-E8 serum levels and to explore the role of MFG-E8 in obesity and T2D. Fasting serum MFG-E8 levels were quantified by enzyme-linked immunosorbent assay for 168 individuals, whose oral glucose tolerance test was conducted, and levels of inflammatory factors, including tumor necrosis factor-α (TNF-α) and C-reactive protein, were measured. The participants were subdivided into 66 newly diagnosed T2D individuals, 44 impaired glucose tolerance (IGT) subjects and 58 healthy controls. Their characteristics were further classified as lean or nonlean for investigation. MFG-E8 levels were significantly higher in T2D subjects than in healthy controls (P = 0.028). Decreased levels of MFG-E8 were found in overweight or obese individuals, compared to those in lean subjects, in both the T2D and IGT groups (P < 0.001). Interestingly, MFG-E8 levels showed a negative correlation with body mass index (BMI) and TNF-α levels in the total population and the T2D subgroup. Further, BMI and TNF-α concentrations were found to be independent predictors of MFG-E8 levels in all subjects. MFG-E8 levels are elevated in T2D but suppressed by increased adipose tissues, thereby allowing inflammatory factors to rise to high levels. MFG-E8 may serve as a potential biomarker for obesity and T2D in the clinical setting. © 2017 IUBMB Life, 69(2):63-71, 2017.
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Affiliation(s)
- Yuanyuan Li
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Wenzhuo Ran
- Department of Clinical Laboratory, Wuhan No. 1 Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Jiaqiang Zhang
- Department of Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Shi Chen
- Department of Pancreatic Surgery, Shanghai Jiao Tong University School of Medicine Affiliated Ruijin Hospital, Shanghai, China
| | - Yihang Li
- Department of Anesthesiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Deng Luo
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Chen Wang
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Weiping Jia
- Department of Endocrinology and Metabolism, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Clinical Center for Diabetes, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Li H, Ma Y, Xu W, Chen H, Day L. MFG-E8 protein promotes C2C12myogenic differentiation by enhancing PI3K/Akt signaling. NEW J CHEM 2017. [DOI: 10.1039/c7nj02216f] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The effect of MFG-E8 on C2C12cell differentiation was analysed by immunocytochemistry, qRT-PCR and Western blot.
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Affiliation(s)
- He Li
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Ying Ma
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Weili Xu
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Haoran Chen
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
| | - Li Day
- School of Chemistry and Chemical Engineering
- Harbin Institute of Technology
- Harbin 150090
- P. R. China
- AgResearch Limited
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Wang L, Sun X, Weiszmann J, Weckwerth W. System-Level and Granger Network Analysis of Integrated Proteomic and Metabolomic Dynamics Identifies Key Points of Grape Berry Development at the Interface of Primary and Secondary Metabolism. FRONTIERS IN PLANT SCIENCE 2017; 8:1066. [PMID: 28713396 PMCID: PMC5491621 DOI: 10.3389/fpls.2017.01066] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 06/02/2017] [Indexed: 05/19/2023]
Abstract
Grapevine is a fruit crop with worldwide economic importance. The grape berry undergoes complex biochemical changes from fruit set until ripening. This ripening process and production processes define the wine quality. Thus, a thorough understanding of berry ripening is crucial for the prediction of wine quality. For a systemic analysis of grape berry development we applied mass spectrometry based platforms to analyse the metabolome and proteome of Early Campbell at 12 stages covering major developmental phases. Primary metabolites involved in central carbon metabolism, such as sugars, organic acids and amino acids together with various bioactive secondary metabolites like flavonols, flavan-3-ols and anthocyanins were annotated and quantified. At the same time, the proteomic analysis revealed the protein dynamics of the developing grape berries. Multivariate statistical analysis of the integrated metabolomic and proteomic dataset revealed the growth trajectory and corresponding metabolites and proteins contributing most to the specific developmental process. K-means clustering analysis revealed 12 highly specific clusters of co-regulated metabolites and proteins. Granger causality network analysis allowed for the identification of time-shift correlations between metabolite-metabolite, protein- protein and protein-metabolite pairs which is especially interesting for the understanding of developmental processes. The integration of metabolite and protein dynamics with their corresponding biochemical pathways revealed an energy-linked metabolism before veraison with high abundances of amino acids and accumulation of organic acids, followed by protein and secondary metabolite synthesis. Anthocyanins were strongly accumulated after veraison whereas other flavonoids were in higher abundance at early developmental stages and decreased during the grape berry developmental processes. A comparison of the anthocyanin profile of Early Campbell to other cultivars revealed similarities to Concord grape and indicates the strong effect of genetic background on metabolic partitioning in primary and secondary metabolism.
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Affiliation(s)
- Lei Wang
- Department of Ecogenomics and Systems Biology, University of ViennaVienna, Austria
| | - Xiaoliang Sun
- Department of Ecogenomics and Systems Biology, University of ViennaVienna, Austria
| | - Jakob Weiszmann
- Department of Ecogenomics and Systems Biology, University of ViennaVienna, Austria
- Vienna Metabolomics Center, University of ViennaVienna, Austria
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology, University of ViennaVienna, Austria
- Vienna Metabolomics Center, University of ViennaVienna, Austria
- *Correspondence: Wolfram Weckwerth
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Cai X, Bao L, Ren J, Li Y, Zhang Z. Grape seed procyanidin B2 protects podocytes from high glucose-induced mitochondrial dysfunction and apoptosis via the AMPK-SIRT1-PGC-1α axis in vitro. Food Funct 2016; 7:805-15. [PMID: 26650960 DOI: 10.1039/c5fo01062d] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Grape seed procyanidin B2 (GSPB2) was reported to have protective effects on diabetic nephropathy (DN) as a strong antioxidant. Our previous studies demonstrated that GSPB2 was effective in ameliorating podocyte injury in rats with DN. However, little is known about the benefits of GSPB2 in protecting against podocyte apoptosis and its molecular mechanisms in vitro. In the present study, we investigated whether GSPB2 could protect podocytes from high glucose-induced apoptosis and explored the possible mechanism. Cell viability and apoptosis were detected by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and flow cytometry, respectively. The intracellular reactive oxygen species (ROS) level was measured using a dichlorofluorescein diacetate (DCFH-DA) fluorescent probe. Real-time reverse transcription-PCR was used to determine the gene expression of nuclear respiratory factor 1 (NRF-1) and mitochondrial transcription factor A (TFAM), and quantitative real-time PCR was used to detect mitochondrial DNA (mtDNA) copy number. Western blots were carried out for the related protein expression in podocytes. Our results showed that GSPB2 significantly inhibited high glucose-induced podocyte apoptosis and increased the expression of nephrin and podocalyxin. GSPB2 treatment also suppressed intracellular ROS production and oxidative stress. The mRNA expressions of NRF-1, TFAM and mtDNA copy number were markedly increased, and mitochondrial swelling was effectively reduced in podocytes cultured under high glucose after GSPB2 treatment. The AMPK-SIRT1-PGC-1α axis was also activated by GSPB2 intervention. In conclusion, GSPB2 protected podocytes from high glucose-induced mitochondrial dysfunction and apoptosis via the AMPK-SIRT1-PGC-1α axis in vitro, suggesting a potential role of GSPB2 in the treatment of DN.
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Affiliation(s)
- Xiaxia Cai
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, P. R. China.
| | - Lei Bao
- Department of Clinical Nutrition, Peking University International Hospital, Beijing, P. R. China
| | - Jinwei Ren
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, P. R. China.
| | - Yong Li
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, P. R. China.
| | - Zhaofeng Zhang
- Department of Nutrition and Food Hygiene, School of Public Health, Peking University, Beijing, P. R. China.
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Cao AL, Wang L, Chen X, Wang YM, Guo HJ, Chu S, Liu C, Zhang XM, Peng W. Ursodeoxycholic acid and 4-phenylbutyrate prevent endoplasmic reticulum stress-induced podocyte apoptosis in diabetic nephropathy. J Transl Med 2016; 96:610-22. [PMID: 26999661 DOI: 10.1038/labinvest.2016.44] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 02/13/2016] [Accepted: 02/16/2016] [Indexed: 02/07/2023] Open
Abstract
Endoplasmic reticulum (ER) stress, resulting from the accumulation of misfolded and/or unfolded proteins in ER membranes, is involved in the pathogenesis of diabetic nephropathy (DN). The aim of this study was to investigate the role of ER stress inhibitors ursodeoxycholic acid (UDCA) and 4-phenylbutyrate (4-PBA) in the treatment of DN in db/db mice. Findings have revealed that diabetic db/db mice were more hyperglycemic than their non-diabetic controls, and exhibited a marked increase in body weight, water intake, urine volume, fasting plasma glucose, systolic blood pressure, glucose and insulin tolerance. UDCA (40 mg/kg/day) or 4-PBA (100 mg/kg/day) treatment for 12 weeks resulted in an improvement in these biochemical and physical parameters. Moreover, UDCA or 4-PBA intervention markedly decreased urinary albuminuria and attenuated mesangial expansion in diabetic db/db mice, compared with db/db mice treated with vehicle. These beneficial effects of UDCA or 4-PBA on DN were associated with the inhibition of ER stress, as evidenced by the decreased expression of BiP, phospho-IRE1α, phospho-eIF2α, CHOP, ATF-6 and spliced X-box binding protein-1 in vitro and in vivo. UDCA or 4-PBA prevented hyperglycemia-induced or high glucose (HG)-induced apoptosis in podocytes in vivo and in vitro via the inhibition of caspase-3 and caspase-12 activation. Autophagy deficiency was also seen in glomeruli in diabetic mice and HG-incubated podocytes, exhibiting decreased expression of LC3B and Beclin-1, which could be restored by UDCA or 4-PBA treatment. Taken together, our results have revealed an important role of ER stress in the development of DN, and UDCA or 4-PBA treatment may be a potential novel therapeutic approach for the treatment of DN.
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Affiliation(s)
- Ai-Li Cao
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Wang
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xia Chen
- Department of Nephrology, Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yun-Man Wang
- Department of Nephrology, Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Heng-Jiang Guo
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Shuang Chu
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Cheng Liu
- Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xue-Mei Zhang
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, China
| | - Wen Peng
- Department of Nephrology, Laboratory of Renal Disease, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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25
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Yin W, Li B, Li X, Yu F, Cai Q, Zhang Z, Cheng M, Gao H. Anti-inflammatory effects of grape seed procyanidin B2 on a diabetic pancreas. Food Funct 2016. [PMID: 26207855 DOI: 10.1039/c5fo00496a] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The prevalence of type 2 diabetes mellitus (T2DM) has increased considerably in recent years, highlighting the importance of developing new therapeutic strategies. Insulin-resistance and gradual dysfunction of pancreatic islets are the mainstay in the progression of T2DM. Therefore, preserving the function of the pancreas may lead to new prospective approaches. Our previous studies suggested that grape seed procyanidin B2 (GSPB2), a natural polyphenol product, exhibited protective effects on diabetic vasculopathy. However, effects of GSPB2 on a diabetic pancreas remain unknown. In this study, we provided strong evidence that GSPB2 exerted protective effects on a diabetic pancreas. GSPB2 attenuated the elevated body weights, food intake and advanced glycation end-product (AGE) levels in db/db mice (p < 0.05), though it had no significant effect on glucose levels. The increased islet sizes, insulin levels, as well as HOMA-IR were also improved by GSPB2 treatment in db/db mice (p < 0.05). Milk fat globule epidermal growth factor-8 (MFG-E8), an estimated target of GSPB2 in our previous studies, was up-regulated in pancreatic tissues whereas GSPB2 treatment down-regulated the protein level (p < 0.05). Since MFG-E8 is highly involved in inflammation, we further investigate pro-inflammatory cytokines interleukin-1β (IL-1β) and NLRP3 levels. We found that levels of IL-1β and NLRP3 increased in a diabetic pancreas while GSPB2 treatment notably attenuated these alterations (p < 0.05). In conclusion, our results suggest that inflammation is involved in the damage of a diabetic pancreas and GSPB2 provides protective effects at least in part through anti-inflammation.
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Affiliation(s)
- Wenbin Yin
- Department of Geriatrics, Qilu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Jinan, Shandong, China.
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Wu S, Yue Y, Li J, Li Z, Li X, Niu Y, Xiang J, Ding H. Procyanidin B2 attenuates neurological deficits and blood-brain barrier disruption in a rat model of cerebral ischemia. Mol Nutr Food Res 2015; 59:1930-41. [PMID: 26228251 DOI: 10.1002/mnfr.201500181] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 07/12/2015] [Accepted: 07/14/2015] [Indexed: 01/08/2023]
Abstract
SCOPE Disruption of the blood-brain barrier (BBB) is a major pathogenic mechanism of neurological dysfunction and death after ischemic stroke. The aim of our study was to investigate the effect of procyanidin B2 (PB), a bioactive food compound, on BBB disruption induced by ischemic stroke and explore the underlying mechanism. METHODS AND RESULTS PB was administrated intragastrically once a day starting at 3 h after transient middle cerebral artery occlusion (MCAO). PB treatment significantly decreased the infarction volume, brain edema, and neurological deficits after MCAO. PB prevented BBB disruption against ischemic stroke, as indicated by the reduction of Evans blue leakage and IgG levels. These results were also corroborated by immunofluorescence staining and Western blot analysis of ZO-1. Additionally, levels of reactive oxygen species and malondialdehyde were lessened in the ipsilateral ischemic area of brain by PB. The activities of antioxidant enzymes were elevated. Meanwhile, PB reversed the suppression of NF-E2-related factor nuclear translocation, and increased the protein expression of HO-1, GSTα, and NQO1 in the ipsilateral ischemic area of brain. CONCLUSION PB attenuates neurological deficits and BBB disruption in a rat model of cerebral ischemia, and the neuroprotection of PB is associated with activation of NF-E2-related factor pathway.
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Affiliation(s)
- Shuangchan Wu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Yuan Yue
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Jian Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Zhike Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Xiaofei Li
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Yunhui Niu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Jin Xiang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
| | - Hong Ding
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, Wuhan University School of Pharmaceutical Sciences, Wuhan University, Wuhan, P. R. China
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Grape seed procyanidin B2 ameliorates mitochondrial dysfunction and inhibits apoptosis via the AMP-activated protein kinase-silent mating type information regulation 2 homologue 1-PPARγ co-activator-1α axis in rat mesangial cells under high-dose glucosamine. Br J Nutr 2014; 113:35-44. [PMID: 25404010 DOI: 10.1017/s000711451400347x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Grape seed procyanidin B2 (GSPB2), an antioxidative and anti-inflammatory polyphenol in grape seed, has been found to have protective effects on diabetic nephropathy. Based on its favourable biological activities, in the present study, we aimed to investigate whether GSPB2 could inhibit apoptosis in rat mesangial cells treated with glucosamine (GlcN) under high-dose conditions. The results showed that the administration of GSPB2 (10 μg/ml) significantly increased the viability of mesangial cells treated with GlcN at a dose of 15 mM. We found that GSPB2 inhibited apoptosis in mesangial cells using terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphates (dUTP) nick-end labelling staining and flow cytometry technique (P< 0·05 for both). GSPB2 treatment also suppressed oxidative stress by elevating the activity of glutathione peroxidase (P< 0·05) and superoxide dismutase (P< 0·01), as well as prevented cellular damage. GSPB2 enhanced the mRNA expression of nuclear respiratory factor 1, mitochondrial transcription factor A and mitochondrial DNA copy number in mesangial cells as determined by real-time PCR (P< 0·05 for each). Finally, GSPB2 treatment activated the protein expression of PPARγ co-activator-1α (PGC-1α), silent mating type information regulation 2 homologue 1 (SIRT1) and AMP-activated protein kinase (AMPK) in mesangial cells. These findings suggest that GSPB2 markedly ameliorates mitochondrial dysfunction and inhibits apoptosis in rat mesangial cells treated with high-dose GlcN. This protective effect could be, at least in part, due to the activation of the AMPK-SIRT1-PGC-1α axis.
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28
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Pei F, Li BY, Zhang Z, Yu F, Li XL, Lu WD, Cai Q, Gao HQ, Shen L. Beneficial effects of phlorizin on diabetic nephropathy in diabetic db/db mice. J Diabetes Complications 2014; 28:596-603. [PMID: 24927646 DOI: 10.1016/j.jdiacomp.2014.04.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 03/18/2014] [Accepted: 04/16/2014] [Indexed: 11/23/2022]
Abstract
AIMS This study observes the effects of phlorizin on diabetic nephrology in db/db diabetic mice and explores possible underlying mechanisms. METHODS Sixteen diabetic db/db mice and eight age-matched db/m mice were divided into three groups: vehicle-treated diabetic group (DM group), diabetic group treated with phlorizin (DMT group) and normal control group (CC group). Phlorizin was given in normal saline solution by intragastric administration for 10 weeks. Differentially expressed proteins in three groups were identified using iTRAQ quantitative proteomics and the data were further analyzed with ingenuity pathway analysis. RESULTS The body weight and serum concentrations of fasting blood glucose (FBG), advanced glycation end products (AGEs), total cholesterol, triglycerides, blood urea nitrogen, creatinine and 24-h urine albumin were increased in the DM group compared to those of the CC group (P<0.05), and they were decreased by treatment with phlorizin (P<0.05). Morphologic observations showed phlorizin markedly attenuated renal injury. Phlorizin prevented diabetic nephropathy by regulating the expression of a series of proteins involved in renal and urological disease, molecular transport, free radical scavenging, and lipid metabolism. CONCLUSIONS Phlorizin protects mice from diabetic nephrology and thus may be a novel therapeutic approach for the treatment of diabetic nephrology.
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Affiliation(s)
- Fei Pei
- Department of Nephrology, Qi-Lu Hospital of Shandong University, Shandong Province 250012, People's Republic of China
| | - Bao-Ying Li
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
| | - Zhen Zhang
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
| | - Fei Yu
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
| | - Xiao-Li Li
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
| | - Wei-da Lu
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
| | - Qian Cai
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
| | - Hai-Qing Gao
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China.
| | - Lin Shen
- Department of Geriatrics, Qi-Lu Hospital of Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Shandong Province 250012, People's Republic of China
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29
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Liu Y, Lv X, Tan R, Liu T, Chen T, Li M, Liu Y, Nie F, Wang X, Zhou P, Chen M, Zhou Q. A modified TALEN-based strategy for rapidly and efficiently generating knockout mice for kidney development studies. PLoS One 2014; 9:e84893. [PMID: 24416307 PMCID: PMC3885652 DOI: 10.1371/journal.pone.0084893] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 11/20/2013] [Indexed: 02/05/2023] Open
Abstract
The transcription activator-like effector nucleases (TALENs) strategy has been widely used to delete and mutate genes in vitro. This strategy has begun to be used for in vivo systemic gene manipulation, but not in an organ-specific manner. In this study, we developed a modified, highly efficient TALEN strategy using a dual-fluorescence reporter. We used this modified strategy and, within 5 weeks, we successfully generated kidney proximal tubule-specific gene Ttc36 homozygous knockout mice. Unilateral nephrectomy was performed on the 6-week-old founders (F0) to identify the knockout genotype prior to the birth of the offspring. This strategy was found to have little effect on reproduction in the knockout mice and inheritability of the knockout genotypes. The modified TALEN knockout strategy in combination with unilateral nephrectomy can be readily used for studies of gene function in kidney development and diseases.
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Affiliation(s)
- Yunhong Liu
- Core Facility of Genetically Engineered Mice, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Xiaoyan Lv
- Department of Dermatology, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Ruizhi Tan
- Core Facility of Genetically Engineered Mice, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Tianming Liu
- Lab of Molecular Nephrology, Chongqing Medical University, Chongqing, China
| | - Tielin Chen
- State Key Laboratory of Biotherapy and Cancer Center, Sichuan University, Chengdu, Sichuan, China
| | - Mi Li
- Core Facility of Genetically Engineered Mice, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Yuhang Liu
- Core Facility of Genetically Engineered Mice, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Fang Nie
- Lab of Molecular Nephrology, Chongqing Medical University, Chongqing, China
| | - Xiaoyan Wang
- Lab of Molecular Nephrology, Chongqing Medical University, Chongqing, China
| | - Puhui Zhou
- Lab of Molecular Nephrology, Chongqing Medical University, Chongqing, China
- * E-mail: (PZ); (QZ)
| | - Mianzhi Chen
- Core Facility of Genetically Engineered Mice, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
| | - Qin Zhou
- Core Facility of Genetically Engineered Mice, Regenerative Medicine Research Center, West China Hospital, West China Medical School, Sichuan University, Chengdu, Sichuan, China
- * E-mail: (PZ); (QZ)
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