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Cho A, Jin W, Lee J, Shin N, Lee MS, Li L, Yang SH, Park KS, Yang CW, Kim DK, Oh YK, Lim CS, Lee JP. Periostin deficiency attenuates kidney fibrosis in diabetic nephropathy by improving pancreatic β-cell dysfunction and reducing kidney EMT. Sci Rep 2023; 13:17599. [PMID: 37845302 PMCID: PMC10579313 DOI: 10.1038/s41598-023-44177-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 10/04/2023] [Indexed: 10/18/2023] Open
Abstract
Diabetic nephropathy (DN) is associated with kidney fibrosis. A previous study revealed that periostin (POSTN) contributes to kidney fibrosis. This study examined the role of POSTN in DN. The urinary concentrations of POSTN and TNC increased according to the severity of DN in human samples. Streptozotocin (STZ) was administered after unilateral nephrectomy (UNXSTZ) to induce DN in wild-type and Postn-null mice. Four experimental groups were generated: wild-typeham (WT Sham), wild-type UNXSTZ (WT STZ), Postn-null Sham (KO Sham), and Postn-null UNXSTZ (KO STZ). After 20 weeks, the KO STZ group had lower levels of urine albumin excretion, glomerular sclerosis, and interstitial fibrosis than those of the WT STZ group. Additionally, the KO STZ group had lower expression of fibrosis markers, including TNC. The KO STZ group showed better glucose regulation than the WT STZ model. Furthermore, the KO STZ group exhibited significantly preserved pancreatic islet integrity and insulin expression. HK-2 cells were used to observe the aggravation of fibrosis caused by POSTN under TGF-β conditions. We stimulated INS-1 cells with streptozotocin and evaluated the viability of these cells. The anti-POSTN antibody treatment of INS-1 cells with streptozotocin resulted in higher cell viability than that with treatment with streptozotocin alone. The absence of POSTN in DN contributes to renal fibrosis alleviation by improving pancreatic β-cell function. Additionally, there is an association between POSTN and TNC.
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Affiliation(s)
- Ara Cho
- Translational Medicine Major, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Wencheng Jin
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeonghwan Lee
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Nayeon Shin
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
| | - Myoung Seok Lee
- Department of Radiology, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Lilin Li
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Critical Care Medicine, Yanbian University Hospital, Yanji, Jilin, China
| | - Seung Hee Yang
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
- Kidney Research Institute, Seoul National University, Seoul, Republic of Korea
| | - Kyong Soo Park
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Chul Woo Yang
- Transplantation Research Center, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dong Ki Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Yun Kyu Oh
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Chun Soo Lim
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jung Pyo Lee
- Translational Medicine Major, Seoul National University College of Medicine, Seoul, Republic of Korea.
- Department of Internal Medicine, Seoul National University Boramae Medical Center, 20, Boramae-ro 5-gil, Dongjak-gu, Seoul, 07061, Republic of Korea.
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea.
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El-Huneidi W, Anjum S, Mohammed AK, Bin Eshaq S, Abdrabh S, Bustanji Y, Soares NC, Semreen MH, Alzoubi KH, Abu-Gharbieh E, Taneera J. Rosemarinic acid protects β-cell from STZ-induced cell damage via modulating NF-κβ pathway. Heliyon 2023; 9:e19234. [PMID: 37662743 PMCID: PMC10472240 DOI: 10.1016/j.heliyon.2023.e19234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 07/30/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023] Open
Abstract
Rosmarinic acid (RA), a natural ester phenolic compound, is known to have antioxidant and anti-inflammatory properties. RA has also been reported to exhibit a hypoglycemic effect; however, the mechanisms underlying this effect have yet to be investigated. Therefore, the present study focused on the anti-diabetic effects and mechanism of RA in INS-1 cells using in vitro model. Streptozotocin (STZ) at a concentration of 3 mM was applied to INS-1 cells for 4 h to create a diabetic model. The cells were pretreated for 24 h with various concentrations (1 and 2.5 μM) of RA. The Cell viability, glucose-stimulated insulin secretion (GSIS), glucose uptake, lipid peroxidation, reactive oxygen species (ROS), apoptosis, and protein expression of Bcl-2, NF-κB, 1L-1β, and PARP were assessed. Results showed that STZ-treated INS-1 cells exhibited reduced cell viability, insulin release, insulin content, glucose uptake, and elevated MDA and ROS levels. Cells pretreated with RA maintained the function and morphology of β-cells against STZ-induced damage. Moreover, RA sustained high protein expression levels of Bcl-2 and low expression levels of NF-κB, IL-1β, and PARP. In conclusion, RA preserved β-cells function against STZ-induced damage by altering NF-κB and Bcl-2 pathways.
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Affiliation(s)
- Waseem El-Huneidi
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Shabana Anjum
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Engineering, Drug Delivery Research Group, American University of Sharjah, Sharjah, United Arab Emirates
| | - Abdul Khader Mohammed
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Shuhd Bin Eshaq
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Sham Abdrabh
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Yasser Bustanji
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- School of Pharmacy, The University of Jordan, Amman, 11942, Jordan
| | - Nelson C. Soares
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Pharmacy, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- Department of Human Genetics, National Institute of Health Doutor Ricardo Jorge (INSA), Lisbon, Portugal
| | - Mohammad H. Semreen
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Pharmacy, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Karem H. Alzoubi
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Pharmacy, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Eman Abu-Gharbieh
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
| | - Jalal Taneera
- Research Institute of Medical and Health Sciences, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
- College of Medicine, University of Sharjah, Sharjah, P.O. Box 27272, United Arab Emirates
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Park JE, Han JS. HM-Chromanone Alleviates Hyperglycemia by Protecting Pancreatic Islet Cells in Streptozotocin-Induced Diabetic Mice. J Med Food 2023. [PMID: 37083465 DOI: 10.1089/jmf.2022.k.0084] [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: 04/22/2023] Open
Abstract
We examined the effects of HM-chromanone (HMC) on alleviating hyperglycemia and protecting pancreatic β-cells from streptozotocin (STZ)-induced damage in C57BL/6J mice. HMC was administered to STZ-induced diabetic mice at 10 or 30 mg/kg, for 14 days. Thereafter, changes in fasting blood glucose levels, insulin-secretion, histopathological examination of pancreas islet cell and apoptotic protein levels, and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay were determined. The results revealed that HMC dose-dependently improved blood glucose concentrations and alleviated pancreatic islet cells damage. In diabetic mice, degeneration of the islet cells was observed wherein they appeared shrunken, with hyaline deterioration, nuclear dissolution, and condensation. However, morphology of the islet cell was restored, and nuclei were visibly rounded in the HMC (30 mg/kg)-administered diabetic mice. In addition, β-cell numbers were markedly increased in HMC mice compared to STZ-induced diabetic mice, and the number of cells stained with glucagon was decreased. HMC markedly decreased the expression of proapoptotic proteins and increased antiapoptotic proteins, and the number of apoptotic cells detected by TUNEL was elevated. HMC decreased expression of interleukin (IL)-1β, IL-6, and tumor necrosis factor-α in diabetic mice. Moreover, HMC increased antioxidant-enzymes activity, and decreased reactive oxygen species generation. In conclusion, the results demonstrate the potential of HMC to alleviate hyperglycemia by protecting the pancreatic β-cells in diabetic mice.
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Affiliation(s)
- Jae Eun Park
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan, Korea
| | - Ji Sook Han
- Department of Food Science and Nutrition & Kimchi Research Institute, Pusan National University, Busan, Korea
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Mazraesefidi M, Mahmoodi M, Hajizadeh M. Effects of silibinin on apoptosis and insulin secretion in rat RINm5F pancreatic β-cells. Biotech Histochem 2023; 98:201-209. [PMID: 36762428 DOI: 10.1080/10520295.2022.2154840] [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: 02/11/2023] Open
Abstract
We investigated whether silibinin, a flavonoid, might be useful for treating diabetes mellitus by treating five groups of rat RINm5F β-insulinemia cells as follows: control streptozotocin (STZ) group administered citrate buffer and dimethyl sulfoxide; STZ group administered 20 mM STZ; silibinin group administered 50 µM silibinin; pre-silibinin group administered 50 µM silibinin 5 h before administering 20 mM STZ; simultaneous group administered 50 µM silibinin at the same time as 20 mM STZ. For all groups, MTT assay and flow cytometry were used to evaluate cell viability and necrosis, respectively. Glucose-stimulated insulin secretion (GSIS) and insulin cell content were determined using enzyme-linked immunosorbent assay. Also, expression of genes, pancreatic and duodenal homeobox 1 (pdx1), neuronal differentiation 1 (neurod1), v-maf avian musculoaponeurotic fibrosarcoma oncogene homolog A (mafa), glucose transporter 2 (glut2)) was determined using the real-time polymerase chain reaction. We found that silibinin improved the viability of RINm5F cells and increased GSIS and cellular insulin under glucotoxic conditions. Silibinin increased the expression of neurod1, mafa and glut2, but reduced pdx1 expression. Our findings suggest that silibinin might increase glucose sensitivity and insulin synthesis under glucotoxic conditions, which could be useful for diabetes treatment.
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Affiliation(s)
- Maryam Mazraesefidi
- Department of Clinical Biochemistry, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Mehdi Mahmoodi
- Department of Clinical Biochemistry, Afzalipoor Faculty of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohammadreza Hajizadeh
- Department of Clinical Biochemistry, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran.,Molecular Medicine Research Center, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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A Comprehensive Review on Distribution, Pharmacological Properties, and Mechanisms of Action of Sesamin. J CHEM-NY 2022. [DOI: 10.1155/2022/4236525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Sesamin is a kind of fat-soluble lignan extracted from sesame seeds or other plants. It has attracted more and more attention because of its extensive pharmacological activities. In this study, we systematically summarized the pharmacological activities of sesamin including antioxidant, anti-inflammatory, anticancer, protection of liver and kidney, prevention of diabetes, hypertension, and atherosclerosis. Studies focus on the abilities of sesamin to attenuate oxidative stress by reducing the levels of ROS and MDA, to inhibit the release of pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, etc.), and to induce apoptosis and autophagy in cancer cells through a variety of signaling pathways such as NF-κB, JNK, p38 MAPK, PI3K/AKT, caspase-3, and p53. By inhibiting the production of ROS, sesamin can also enhance the biological activities of NO in blood vessels, improve endothelial dysfunction and hypertension, and change the process of atherosclerotic lesion formation. In line with this, the various pharmacological properties of sesamin have been discussed in this review so that we can have a deeper understanding of the pharmacological activities of sesamin and clear the future development direction of sesamin.
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Zhang Y, Jin D, An X, Duan L, Duan Y, Lian F. Lychee Seed as a Potential Hypoglycemic Agent, and Exploration of its Underlying Mechanisms. Front Pharmacol 2021; 12:737803. [PMID: 34690773 PMCID: PMC8531476 DOI: 10.3389/fphar.2021.737803] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/06/2021] [Indexed: 12/12/2022] Open
Abstract
Food is people's primal want. A reasonable diet and healthy food not only provide nutrients for human growth but also contribute to disease prevention and treatment, while following an unhealthy diet can lead to an increased risk of many diseases, especially metabolic disorders, such as diabetes. Nature is enriched with different food sources, and it seems that purely natural products are more in line with the current concept of health, which enhance the formation of the notion that "Food/Diet Supplements from Natural Sources as a Medicine." As a delicious fruit, the medicinal values such as anticancer, antibacterial, antioxidation, and antiglycating properties of lychee have been found. Lychee (Litchi in Chinese) is a subtropical fruit plant belonging to the family Sapindaceae. It has been widely cultivated in warm climates worldwide, particularly in China, for thousands of years. In recent years, various phytochemical components such as quercetin, procyanidin A2, and (2R)-naringenin-7-O-(3-O-αL-rhamnopyranosyl-β-D-glucopyranoside) have been identified in a lychee seed, which may lend a lychee seed as a relatively safe and inexpensive adjuvant treatment for diabetes and diabetic complications. In fact, accumulating evidence has shown that lychee seed, lychee seed extracts, and related compounds have promising antihyperglycemic activities, including improving insulin resistance, anti-inflammatory effect, lipid regulation, neuroprotection, antineurotoxic effect, and renoprotection effect. In this review, we summarized publications on antiglycemic effects and mechanisms of lychee seed, lychee seed extracts, and related compounds, which included their efficacies as a cure for diabetes and diabetic complications in cells, animals, and humans, attempting to obtain a robust evidence basis for the clinical application and value of lychee seed.
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Affiliation(s)
- Yuehong Zhang
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - De Jin
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xuedong An
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Liyun Duan
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yingying Duan
- Clinical department of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Fengmei Lian
- Department of Endocrinology, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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The Coffee Diterpene, Kahweol, Ameliorates Pancreatic β-Cell Function in Streptozotocin (STZ)-Treated Rat INS-1 Cells through NF-kB and p-AKT/Bcl-2 Pathways. Molecules 2021; 26:molecules26175167. [PMID: 34500601 PMCID: PMC8434527 DOI: 10.3390/molecules26175167] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/20/2021] [Accepted: 08/24/2021] [Indexed: 12/20/2022] Open
Abstract
Kahweol is a diterpene molecule found in coffee that exhibits a wide range of biological activity, including anti-inflammatory and anticancer properties. However, the impact of kahweol on pancreatic β-cells is not known. Herein, by using clonal rat INS-1 (832/13) cells, we performed several functional experiments including; cell viability, apoptosis analysis, insulin secretion and glucose uptake measurements, reactive oxygen species (ROS) production, as well as western blotting analysis to investigate the potential role of kahweol pre-treatment on damage induced by streptozotocin (STZ) treatment. INS-1 cells pre-incubated with different concentrations of kahweol (2.5 and 5 µM) for 24 h, then exposed to STZ (3 mmol/L) for 3 h reversed the STZ-induced effect on cell viability, apoptosis, insulin content, and secretion in addition to glucose uptake and ROS production. Furthermore, Western blot analysis showed that kahweol downregulated STZ-induced nuclear factor kappa B (NF-κB), and the antioxidant proteins, Heme Oxygenase-1 (HMOX-1), and Inhibitor of DNA binding and cell differentiation (Id) proteins (ID1, ID3) while upregulated protein expression of insulin (INS), p-AKT and B-cell lymphoma 2 (BCL-2). In conclusion, our study suggested that kahweol has anti-diabetic properties on pancreatic β-cells by suppressing STZ induced apoptosis, increasing insulin secretion and glucose uptake. Targeting NF-κB, p-AKT, and BCL-2 in addition to antioxidant proteins ID1, ID3, and HMOX-1 are possible implicated mechanisms.
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Wang X, Qiao J, Zou C, Zhao Y, Huang Y. Sesamin induces cell cycle arrest and apoptosis through p38/C-Jun N-terminal kinase mitogen-activated protein kinase pathways in human colorectal cancer cells. Anticancer Drugs 2021; 32:248-256. [PMID: 33534411 DOI: 10.1097/cad.0000000000001031] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Sesamin, a lignan compound, exhibits a variety of biological activities and possesses potent anticancer properties on some human cancers. However, its effect on human colorectal cancer (CRC) remains to be elucidated. To investigate the effects of sesamin on CRC cells and further to explore the mechanisms, cell viability, cell cycle and apoptosis assays were performed in this study. We found that sesamin had a selective antiproliferation of CRC cell line HCT116 in a dose- and time-dependent manner, but no obvious effect on human normal colorectal mucosa epithelial cell FHC. Further study showed that sesamin-induced cell cycle arrest and decreased the expression of Cyclin D1 significantly and dose-dependently in HCT116 cells. Moreover, sesamin dose-dependently triggered apoptosis of HCT116 but not FHC, and promoted the expression levels of proapoptotic biomarkers Bax, cleaved caspase-3 and cleaved PARP-1 and inhibited the expression of antiapoptotic biomarker Bcl-2. Western blot analysis was used to reveal the possible signaling pathways, and we found that sesamin upregulated the phosphorylation expression levels of C-Jun N-terminal kinase (JNK) and p38 except ERK1/2 in a dose-dependent way in both HCT116 and another CRC cell line SW480. Moreover, we found that the apoptosis effect induced by sesamin was partially eliminated by inhibiting JNK or p38 activation. Finally, we showed that sesamin effectively reduced the growth of xenograft tumors derived from cell lines with limited toxicity. Taken together, the potential ability of sesamin to induce cell cycle arrest and apoptosis was shown to be via the p38 and JNK mitogen-activated protein kinase signaling pathways, which may be one of the mechanisms of the anticancer activity of this low-toxic agent.
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Affiliation(s)
| | | | | | - Yutao Zhao
- Institute of Anesthesia, Xuzhou Medical University, Xuzhou, Jiangsu Province, China
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Sesamin alleviates diabetes-associated behavioral deficits in rats: The role of inflammatory and neurotrophic factors. Int Immunopharmacol 2021; 92:107356. [PMID: 33440305 DOI: 10.1016/j.intimp.2020.107356] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/23/2020] [Accepted: 12/27/2020] [Indexed: 12/13/2022]
Abstract
Neuroinflammation and loss of neurotrophic support have key roles in the pathophysiology of diabetes-associated behavioral deficits (DABD). Sesamin (Ses), a major lignan of sesame seed and its oil, shows anti-hyperglycemic, anti-oxidative, and neuroprotective effects. The present study was designed to assess the potential protective effects of Ses against DABD and investigate the roles of inflammatory markers and neurotrophic factors in streptozotocin (STZ)-induced diabetic rats. After confirmation of diabetes, Ses (30 mg/kg/day; P.O.) or insulin (6 IU/rat/day; S.C.) was administered to rats for eight consecutive weeks. During the eighth-week period of the study, behavioral functions of the animals were evaluated by employing standard behavioral paradigms. Moreover, inflammation status, neurotrophic factors, and histological changes were assessed in the cerebral cortex and hippocampal regions of the rats. The results of behavioral tests showed that STZ-induced diabetes increased anxiety-/depression-like behaviors, decreased locomotor/exploratory activities, and impaired passive avoidance learning and memory. These DABD were accompanied by neuroinflammation, lack of neurotrophic support, and neuronal loss in both cerebral cortex and hippocampus of the rats. Intriguingly, chronic treatment with Ses improved all the above-mentioned diabetes-related behavioral, biochemical, and histological deficits, and in some cases, it was even more effective than insulin therapy. In conclusion, the results suggest that Ses was capable of improving DABD, which might be ascribed, at least partly, to the reduction of blood glucose level, inhibition of neuroinflammation, and potentiation of neurotrophic factors.
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Treatment with Mammalian Ste-20-like Kinase 1/2 (MST1/2) Inhibitor XMU-MP-1 Improves Glucose Tolerance in Streptozotocin-Induced Diabetes Mice. Molecules 2020; 25:molecules25194381. [PMID: 32987643 PMCID: PMC7582334 DOI: 10.3390/molecules25194381] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/18/2020] [Accepted: 09/22/2020] [Indexed: 01/14/2023] Open
Abstract
Diabetes mellitus (DM) is one of the major causes of death in the world. There are two types of DM—type 1 DM and type 2 DM. Type 1 DM can only be treated by insulin injection whereas type 2 DM is commonly treated using anti-hyperglycemic agents. Despite its effectiveness in controlling blood glucose level, this therapeutic approach is not able to reduce the decline in the number of functional pancreatic β cells. MST1 is a strong pro-apoptotic kinase that is expressed in pancreatic β cells. It induces β cell death and impairs insulin secretion. Recently, a potent and specific inhibitor for MST1, called XMU-MP-1, was identified and characterized. We hypothesized that treatment with XMU-MP-1 would produce beneficial effects by improving the survival and function of the pancreatic β cells. We used INS-1 cells and STZ-induced diabetic mice as in vitro and in vivo models to test the effect of XMU-MP-1 treatment. We found that XMU-MP-1 inhibited MST1/2 activity in INS-1 cells. Moreover, treatment with XMU-MP-1 produced a beneficial effect in improving glucose tolerance in the STZ-induced diabetic mouse model. Histological analysis indicated that XMU-MP-1 increased the number of pancreatic β cells and enhanced Langerhans islet area in the severe diabetic mice. Overall, this study showed that MST1 could become a promising therapeutic target for diabetes mellitus.
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Zhou DY, Mou X, Liu K, Liu WH, Xu YQ, Zhou D. In silico prediction and validation of potential therapeutic genes in pancreatic β-cells associated with type 2 diabetes. Exp Ther Med 2020; 20:60. [PMID: 32952650 PMCID: PMC7485321 DOI: 10.3892/etm.2020.9188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 03/24/2020] [Indexed: 02/07/2023] Open
Abstract
Diabetes mellitus is becoming a major health burden worldwide. Pancreatic β-cell death is a characteristic of type 2 diabetes (T2D), but the underlying mechanisms of pancreatic β-cell death remain unknown. Therefore, the aim of the present study was to identify potential targets in the pancreatic islet of T2D. The GSE20966 dataset was obtained from the Gene Expression Omnibus (GEO) database, and differentially expressed genes (DEGs) were identified by using the GEO2R tool. The Gene Ontology terms and Kyoto Encyclopedia of Genes and Genomes Pathway enrichment analysis of DEGs were further assessed using the Database for Annotation, Visualization and Integrated Discovery. Furthermore, protein-protein interaction (PPI) networks were constructed for the up- and downregulated genes using STRING databases and were then visualized with Cytoscape. The body weight, fasting blood glucose (FBG), pancreatic index and biochemistry parameters were measured in db/db mice. Moreover, the morphology of the pancreas was detected by hematoxylin and eosin staining, and hub genes were assessed using reverse transcription-quantitative PCR (RT-qPCR) and western blot analysis. In total, 570 DEGs were screened, including 376 upregulated and 194 downregulated genes, which were associated with 'complement activation, classical pathway', 'proteolysis', 'complement activation' and 'pancreatic secretion pathway'. It was found that the body weight, FBG, alanine aminotransferase, aspartate aminotransferase, total cholesterol, triglycerides, blood urea nitrogen, creatinine, fasting serum insulin, glucagon and low-density lipoprotein cholesterol levels were significantly higher in db/db mice, while high-density lipoprotein cholesterol levels and the pancreatic index were significantly decreased. Furthermore, albumin, interleukin-8, CD44, C-C motif chemokine ligand 2, hepatocyte growth factor, cystic fibrosis transmembrane conductance regulator, histone cluster 1 H2B family member n, mitogen-activated protein kinase 11 and neurotrophic receptor tyrosine kinase 2 were identified as hub genes in PPI network. RT-qPCR and western blotting results demonstrated the same expression trend in hub genes as found by the bioinformatics analysis. Therefore, the present study identified a series of hub genes involved in the progression of pancreatic β-cell, which may help to develop effective therapeutic strategy for T2D.
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Affiliation(s)
- Di Yi Zhou
- Department of Endocrinology, Zhejiang Integrated Traditional and Western Medicine Hospital, Hangzhou, Zhejiang 310003, P.R. China
| | - Xin Mou
- Department of Endocrinology, Zhejiang Integrated Traditional and Western Medicine Hospital, Hangzhou, Zhejiang 310003, P.R. China
| | - Kaiyuan Liu
- Department of Endocrinology, Zhejiang Integrated Traditional and Western Medicine Hospital, Hangzhou, Zhejiang 310003, P.R. China
| | - Wen Hong Liu
- College of The Second Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310000, P.R. China
| | - Ya Qing Xu
- Department of Endocrinology, Zhejiang Integrated Traditional and Western Medicine Hospital, Hangzhou, Zhejiang 310003, P.R. China
| | - Danyang Zhou
- Department of Endocrinology, Zhejiang Integrated Traditional and Western Medicine Hospital, Hangzhou, Zhejiang 310003, P.R. China
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Liang H, Pan Y, Teng Y, Yuan S, Wu X, Yang H, Zhou P. A proteoglycan extract from Ganoderma Lucidum protects pancreatic beta-cells against STZ-induced apoptosis. Biosci Biotechnol Biochem 2020; 84:2491-2498. [PMID: 32799731 DOI: 10.1080/09168451.2020.1805718] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The pancreatic β-cell death or dysfunction induced by oxidative stress plays an important effect on the development and progression of diabetes mellitus. Based on our previous findings, a natural proteoglycan extracted from Ganoderma Lucidum, named FYGL, could treat T2DM in vivo. In this study, we investigated the effects of FYGL on STZ-induced apoptosis of INS-1 cells and its underlying mechanisms. The results showed that FYGL significantly improved the cell viability and alleviated the apoptosis in STZ-treated INS-1 cells. Moreover, FYGL markedly decreased the intracellular ROS accumulation and NO release, and deactivated NF-κB, JNK, and p38 MAPK signaling pathways in STZ-induced INS-1 cells. Furthermore, FYGL improved the insulin secretion through inhibiting the activation of JNK and improving the expression of Pdx-1 in INS-1 cells damaged by STZ. These results indicated that FYGL could protect pancreatic β-cells against apoptosis and dysfunction, and be used as a promising pharmacological medicine for diabetes management. Abbreviations: T2DM: type 2 diabetes mellitus; FYGL: Fudan-Yueyang G. lucidum; ROS: reactive oxygen species; NO: reactive oxygen species; NF-κB: nuclear factor kappa beta; JNK: c-jun N-terminal kinase; MAPK: mitogen-activated protein kinase; Pdx-1: Pancreatic duodenal homeobox 1.
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Affiliation(s)
- Haohui Liang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai, P. R. China
| | - Yanna Pan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai, P. R. China
| | - Yilong Teng
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai, P. R. China
| | - Shilin Yuan
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai, P. R. China
| | - Xiao Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai, P. R. China
| | - Hongjie Yang
- Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine , Shanghai, P. R. China
| | - Ping Zhou
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University , Shanghai, P. R. China
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Vijayakumar S, Vinayagam R, Anand MAV, Venkatachalam K, Saravanakumar K, Wang MH, Casimeer C S, KM G, David E. Green synthesis of gold nanoparticle using Eclipta alba and its antidiabetic activities through regulation of Bcl-2 expression in pancreatic cell line. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101786] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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14
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Kuo PC, Kao ZH, Lee SW, Wu SN. Effects of Sesamin, the Major Furofuran Lignan of Sesame Oil, on the Amplitude and Gating of Voltage-Gated Na + and K + Currents. Molecules 2020; 25:molecules25133062. [PMID: 32635522 PMCID: PMC7411736 DOI: 10.3390/molecules25133062] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 07/01/2020] [Accepted: 07/01/2020] [Indexed: 12/17/2022] Open
Abstract
Sesamin (SSM) and sesamolin (SesA) are the two major furofuran lignans of sesame oil and they have been previously noticed to exert various biological actions. However, their modulatory actions on different types of ionic currents in electrically excitable cells remain largely unresolved. The present experiments were undertaken to explore the possible perturbations of SSM and SesA on different types of ionic currents, e.g., voltage-gated Na+ currents (INa), erg-mediated K+ currents (IK(erg)), M-type K+ currents (IK(M)), delayed-rectifier K+ currents (IK(DR)) and hyperpolarization-activated cation currents (Ih) identified from pituitary tumor (GH3) cells. The exposure to SSM or SesA depressed the transient and late components of INa with different potencies. The IC50 value of SSM needed to lessen the peak or sustained INa was calculated to be 7.2 or 0.6 μM, while that of SesA was 9.8 or 2.5 μM, respectively. The dissociation constant of SSM-perturbed inhibition on INa, based on the first-order reaction scheme, was measured to be 0.93 μM, a value very similar to the IC50 for its depressant action on sustained INa. The addition of SSM was also effective at suppressing the amplitude of resurgent INa. The addition of SSM could concentration-dependently inhibit the IK(M) amplitude with an IC50 value of 4.8 μM. SSM at a concentration of 30 μM could suppress the amplitude of IK(erg), while at 10 μM, it mildly decreased the IK(DR) amplitude. However, the addition of neither SSM (10 μM) nor SesA (10 μM) altered the amplitude or kinetics of Ih in response to long-lasting hyperpolarization. Additionally, in this study, a modified Markovian model designed for SCN8A-encoded (or NaV1.6) channels was implemented to evaluate the plausible modifications of SSM on the gating kinetics of NaV channels. The model demonstrated herein was well suited to predict that the SSM-mediated decrease in peak INa, followed by increased current inactivation, which could largely account for its favorable decrease in the probability of the open-blocked over open state of NaV channels. Collectively, our study provides evidence that highlights the notion that SSM or SesA could block multiple ion currents, such as INa and IK(M), and suggests that these actions are potentially important and may participate in the functional activities of various electrically excitable cells in vivo.
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Affiliation(s)
- Ping-Chung Kuo
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan;
| | - Zi-Han Kao
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (Z.-H.K.); (S.-W.L.)
| | - Shih-Wei Lee
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (Z.-H.K.); (S.-W.L.)
| | - Sheng-Nan Wu
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan; (Z.-H.K.); (S.-W.L.)
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 40402, Taiwan
- Correspondence: ; Tel.: +886-6-235-3535-5334; Fax: +886-6-2362780
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15
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Xin S, Ye X. Oxalomalate regulates the apoptosis and insulin secretory capacity in streptozotocin-induced pancreatic β-cells. Drug Dev Res 2020; 81:437-443. [PMID: 31904108 DOI: 10.1002/ddr.21635] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 12/13/2019] [Accepted: 12/22/2019] [Indexed: 12/26/2022]
Abstract
Diabetes mellitus (DM) is a kind of metabolic disorder characterized by long-term hyperglycemia. Oxidative stress is involved in inducing the apoptosis of pancreatic β-cells and promoting the development of DM. Oxalomalate (OMA) is a competitive inhibitor of two classes of NADP+-dependent isocitrate dehydrogenase isoenzymes that are the main nicotinamide adenine dinucleotide phosphate (NADPH) producers to scavenge cellular reactive oxygen species (ROS). However, the role of OMA in DM remains unclear. The present study aimed to investigate the protective effects of OMA on streptozotocin (STZ)-induced β-cell damage and its underlying mechanisms. The viability of rat insulinoma cell line (INS-1) and the contents of ROS, nitric oxide and NAPDH were examined after cells being treated with STZ. After treatment with OMA in STZ-stimulated INS-1, the cell viability, apoptosis, and apoptosis-related proteins were measured. Meanwhile, the levels of oxidative stress-related factors and the changes of insulin secretion were determined. The results revealed that OMA significantly increased the cell viability (p < .05), reduced the apoptotic rate (p < .001), and altered the expression levels of Bcl-2, Bax, cleaved caspase3, and cleaved-caspase9 (p < .05 or p < .01) in STZ-induced INS-1 cells. Moreover, OMA enhanced the activities of superoxide dismutase, catalase, glutathione peroxidase (p < .01), whereas reduced the levels of ROS, malondialdehyde and lactic dehydrogenase (p < .001). Furthermore, OMA improved the ability of insulin secretion. These results indicated that OMA might have antioxidative stress and anti-apoptosis effects to protect INS-1 cells from STZ-induced cell damage.
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Affiliation(s)
- Suping Xin
- Department of Endocrinology, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Xinhua Ye
- Department of Endocrinology, Changzhou Second People's Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
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16
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Design, synthesis and biological evaluation of vincamine derivatives as potential pancreatic β-cells protective agents for the treatment of type 2 diabetes mellitus. Eur J Med Chem 2019; 188:111976. [PMID: 31918073 DOI: 10.1016/j.ejmech.2019.111976] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/06/2019] [Accepted: 12/16/2019] [Indexed: 12/19/2022]
Abstract
A series of vincamine derivatives were designed, synthesized and evaluated as pancreatic β-cells protective agents for type 2 diabetes mellitus. Most of the compounds displayed potent pancreatic β-cells protective activities and five derivatives were found to exhibit 20-50-fold higher activities than vincamine. Especially for compounds Vin-C01 and Vin-F03, exhibited a remarkable EC50 value of 0.22 μM and 0.27 μM, respectively. Their pancreatic β-cells protective activities increased approximately 2 times than vincamine. In cell viability assay, compounds Vin-C01 and Vin-F03 could effectively promote β-cell survival and protect β-cells from STZ-induced apoptosis. Further cellular mechanism of action studies demonstrated that their potent β-cells protective activities were achieved by regulating IRS2/PI3K/Akt signaling pathway. The present study evidently showed that compounds Vin-C01 and Vin-F03 were two more potent pancreatic β-cells protective agents compared to vincamine and might serve as promising lead candidates for the treatment of type 2 diabetes mellitus.
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Wang Q, Jia M, Zhao Y, Hui Y, Pan J, Yu H, Yan S, Dai X, Liu X, Liu Z. Supplementation of Sesamin Alleviates Stress-Induced Behavioral and Psychological Disorders via Reshaping the Gut Microbiota Structure. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12441-12451. [PMID: 31674783 DOI: 10.1021/acs.jafc.9b03652] [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] [Indexed: 05/22/2023]
Abstract
Sesamin, a lignan from sesame seed, has been reported to attenuate chronic mild stress-induced depressive-like behaviors. Gut microbiota play pivotal roles in mediating psychological behaviors by regulating gut barrier integrity and systemic inflammatory responses. Here, we found that oral sesamin administration (50 mg/kg·bodyweight/day) significantly attenuated depressive, aversive, repetitive, and anxiety-like behaviors in a long-term multiple nonsocial stress-treated mice model. Sesamin inhibited stress-induced gut barrier integrity damage, reduced circulating lipopolysaccharide (LPS) levels, and suppressed neuroinflammatory responses. Moreover, sesamin treatment also restructured the gut microbiome by enhancing the relative abundances of Bacteroidales and S24-7. The correlation analysis indicated that the microbiota composition changes were strongly correlated with behavioral disorders, serotonin, norepinephrine, and LPS levels. In conclusion, sesamin has preventive effects on stress-induced behavioral and psychological disorders, which might be highly related to the reshaped microbiota composition. This study provides a clue for understanding the systemic mechanism of anti-depression effects of sesamin.
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Affiliation(s)
- Qianxu Wang
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Mengzhen Jia
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Yihang Zhao
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Yan Hui
- Department of Food Science , University of Copenhagen , Copenhagen 1958 , Denmark
- BGI Institute of Applied Agriculture , BGI-Shenzhen , Shenzhen 518120 , China
| | - Junru Pan
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Hongfei Yu
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Shikai Yan
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Xiaoshuang Dai
- BGI Institute of Applied Agriculture , BGI-Shenzhen , Shenzhen 518120 , China
| | - Xuebo Liu
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
| | - Zhigang Liu
- College of Food Science and Engineering , Northwest A&F University , Yangling 712100 , China
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18
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Zhang H, Zhu C, Sun Z, Yan X, Wang H, Xu H, Ma J, Zhang Y. Linderane protects pancreatic β cells from streptozotocin (STZ)-induced oxidative damage. Life Sci 2019; 233:116732. [PMID: 31394125 DOI: 10.1016/j.lfs.2019.116732] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 08/03/2019] [Accepted: 08/04/2019] [Indexed: 12/25/2022]
Abstract
AIMS Linderane, an important bioactive compound in Linderae, improved glucose and lipid metabolism in ob/ob mice. However, the effect of linderane on streptozotocin (STZ)-induced oxidative damage in INS-1 cells remains unclear. MAIN METHODS INS-1 cells were pre-treated with different doses of linderane for 2 h and then treated with 3 mM STZ for 12 h. Cell viability was determined by MTT assay. Cell apoptosis was detected using an Annexin V-FITC Apoptosis Detection Kit. The level of intracellular ROS was determined using dichlorofluorescein-diacetate (DCFH-DA). The activities of insulin secretion, SOD, catalase (CAT) and GPx were measured using ELISA kits. The expression levels of bax, bcl-2, p38, p-p38, nuclear Nrf2 and HO-1 were measured using western blot. KEY FINDINGS The results showed that STZ-caused inhibitory effects on cell viability and insulin secretion were mitigated by linderane. Furthermore, linderane inhibited apoptosis and oxidative stress in STZ-induced INS-1 cells. Finally, linderane suppressed the activation of p38 MAPK pathway, as well as enhanced the activation of Nrf2 pathway in STZ-induced INS-1 cells. Activation of p38 MAPK pathway or inhibition of Nrf2 significantly reversed the protective effects of linderane against STZ-induced ROS production and cell apoptosis. SIGNIFICANCE The protective effects of linderane on STZ-induced INS-1 cells might be attributed to the inhibition of p38 MAPK and activation of Nrf2 pathway.
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Affiliation(s)
- Haijun Zhang
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China.
| | - Chunping Zhu
- Department of Cardiac Function, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; Department of Cardiac Function, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
| | - Zhe Sun
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
| | - Xiaoguang Yan
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
| | - Huihui Wang
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
| | - Haibo Xu
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
| | - Jiani Ma
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
| | - Yanrong Zhang
- The Second Department of Endocrinology, The First Hospital of Qiqihar, Qiqihar 161005, Heilongjiang Province, China; The Second Department of Endocrinology, Affiliated Qiqihar Hospital, Southern Medical University, Qiqihar 161005, Heilongjiang Province, China
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19
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Sesamin: A promising protective agent against diabetes-associated cognitive decline in rats. Life Sci 2019; 230:169-177. [DOI: 10.1016/j.lfs.2019.05.071] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/22/2019] [Accepted: 05/27/2019] [Indexed: 02/06/2023]
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20
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Effects of streptozotocin and S-allyl-L-cysteine on motility, plasma membrane integrity, and mitochondrial activity of boar spermatozoa. Trop Anim Health Prod 2019; 52:437-444. [PMID: 31301041 DOI: 10.1007/s11250-019-01983-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 06/13/2019] [Indexed: 01/26/2023]
Abstract
This study investigated the effects of streptozotocin (STZ) and S-allyl-L-cysteine (SAC) on motility, plasma membrane integrity, and mitochondrial activity of the boar sperm. STZ (0, 10, 50, and 100 μM) and SAC (0, 1, 5, 25, and 100 μM) were treated alone and co-treated in the fresh boar semen. The motility, plasma membrane integrity, and mitochondrial activity of sperm were analyzed at 3, 6, and 9 h after incubation. Boar semen was collected using the gloved-hand method from ten crossbred male pigs, and age of experimental ten male pigs is 24~27 months. The sperm plasma membrane integrity was analyzed using Live/Dead sperm kit. Mitochondrial activity was analyzed using rhodamine 123 and PI double-staining method. Additionally, sperm motility was evaluated according to standard method. Sperm motility, plasma membrane integrity, and mitochondrial activity were decreased in an STZ concentration-dependent manner (P < 0.05) and also were decreased by 10 μM STZ in all incubation times (P < 0.05). The motility, plasma membrane integrity, and mitochondrial activity of the sperm were increased at 5 μM SAC treatment, whereas it was decreased at 100 μM treatment. In addition, sperm motility, plasma membrane integrity, and mitochondrial activity were increased when co-treated with 50 μM STZ and 5 μM SAC group at 9 h after incubation (P < 0.05). Based on our results, STZ has a deleterious effect on sperm characteristics, and SAC can protect sperm motility, viability, and function of the sperm exposed to STZ.
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21
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Wang L, Li C, Huang Q, Fu X. Biofunctionalization of selenium nanoparticles with a polysaccharide from Rosa roxburghii fruit and their protective effect against H 2O 2-induced apoptosis in INS-1 cells. Food Funct 2019; 10:539-553. [PMID: 30662993 DOI: 10.1039/c8fo01958d] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Defective glucose-stimulated insulin secretion (GSIS) induced by chronic exposure to reactive oxygen species (ROS) is a hallmark of type 2 diabetes mellitus (T2DM). Therefore, it is of great interest to search for biofunctional agents with antioxidant activity to protect pancreatic islet cells from oxidative damage. In the present study, selenium nanoparticles (SeNPs) functionalized with a novel polysaccharide (RTFP-3) extracted from Rosa roxburghii fruit were first prepared via a facile, single-step and green in situ synthesis method. The in vitro protective effects of RP3-SeNPs on INS-1 cells against H2O2-induced cell apoptosis were investigated. Structural characterization indicated that RTFP-3-functionalized SeNPs (RP3-SeNPs) with an average diameter of 104.5 nm were highly uniform and extremely stable in comparison with bare SeNPs. The results of bioassays revealed that RP3-SeNPs possessed much higher protective and suppressive activities against H2O2-induced apoptosis of INS-1 cells in comparison with their individual components. After treatment with an RP3-SeNPs solution (2 μg mL-1), the cell viability of INS-1 cells reached about 89.34%. Mechanistic studies demonstrated that RP3-SeNPs effectively blocked the overproduction of intracellular ROS, mitochondrial damage, and the activation of caspase-3, caspase-8, and caspase-9 in INS-1 cells, which indicated that RP3-SeNPs functioned via attenuating oxidative stress and downregulating the expression of uncoupling protein-2 (UCP-2). Our findings suggest that RP3-SeNPs can function as a promising candidate to prevent or limit the dysfunction of β-cells.
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Affiliation(s)
- Lei Wang
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, South China University of Technology, Guangzhou 510640, China.
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Liu Y, Han J, Zhou Z, Li D. Paeoniflorin protects pancreatic β cells from STZ-induced damage through inhibition of the p38 MAPK and JNK signaling pathways. Eur J Pharmacol 2019; 853:18-24. [DOI: 10.1016/j.ejphar.2019.03.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 03/12/2019] [Accepted: 03/14/2019] [Indexed: 12/22/2022]
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Wang K, Su Y, Liang Y, Song Y, Wang L. Oral DhHP-6 for the Treatment of Type 2 Diabetes Mellitus. Int J Mol Sci 2019; 20:ijms20061517. [PMID: 30917579 PMCID: PMC6470840 DOI: 10.3390/ijms20061517] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 03/15/2019] [Accepted: 03/22/2019] [Indexed: 12/16/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is associated with pancreatic β-cell dysfunction which can be induced by oxidative stress. Deuterohemin-βAla-His-Thr-Val-Glu-Lys (DhHP-6) is a microperoxidase mimetic that can scavenge reactive oxygen species (ROS) in vivo. In our previous studies, we demonstrated an increased stability of linear peptides upon their covalent attachment to porphyrins. In this study, we assessed the utility of DhHP-6 as an oral anti-diabetic drug in vitro and in vivo. DhHP-6 showed high resistance to proteolytic degradation in vitro and in vivo. The degraded DhHP-6 product in gastrointestinal (GI) fluid retained the enzymatic activity of DhHP-6, but displayed a higher permeability coefficient. DhHP-6 protected against the cell damage induced by H2O2 and promoted insulin secretion in INS-1 cells. In the T2DM model, DhHP-6 reduced blood glucose levels and facilitated the recovery of blood lipid disorders. DhHP-6 also mitigated both insulin resistance and glucose tolerance. Most importantly, DhHP-6 promoted the recovery of damaged pancreas islets. These findings suggest that DhHP-6 in physiological environments has high stability against enzymatic degradation and maintains enzymatic activity. As DhHP-6 lowered the fasting blood glucose levels of T2DM mice, it thus represents a promising candidate for oral administration and clinical therapy.
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Affiliation(s)
- Kai Wang
- School of life Sciences, Jilin University, Changchun 130012, China.
| | - Yu Su
- School of life Sciences, Jilin University, Changchun 130012, China.
| | - Yuting Liang
- School of life Sciences, Jilin University, Changchun 130012, China.
| | - Yanhui Song
- School of life Sciences, Jilin University, Changchun 130012, China.
| | - Liping Wang
- School of life Sciences, Jilin University, Changchun 130012, China.
- Key Laboratory for Molecular Enzymology and Engineering, the Ministry of Education, Jilin University, Changchun 130012, China.
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Zhang Q, Xiao X, Zheng J, Li M. A glucagon-like peptide-1 analog, liraglutide, ameliorates endothelial dysfunction through miRNAs to inhibit apoptosis in rats. PeerJ 2019; 7:e6567. [PMID: 30863684 PMCID: PMC6408912 DOI: 10.7717/peerj.6567] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/05/2019] [Indexed: 01/08/2023] Open
Abstract
Background and Aims Many studies have revealed that glucagon-like peptide-1 has vasoprotective effects. In this study, we investigated whether liraglutide suppressed endothelial dysfunction and explored the mechanism involved. Methods Experimental diabetes was induced through combined high-fat diet administration and intraperitoneal streptozotocin injections. Rats were randomly divided into the following four groups: control, diabetes, diabetes + a low liraglutide dose (0.2 mg/kg/d), and diabetes + a high liraglutide dose (0.4 mg/kg/d). Endothelial function and metabolic parameters were measured after 8 weeks of treatment. miRNA arrays were analyzed to identify the differentially expressed miRNAs. Results We found that liraglutide significantly improved aortic endothelial function in diabetic rats. Liraglutide inhibited miR-93-5p, miR-181a-5p and miR-34a-5p expression, and activated miR-26a-5p expression. miRNA mimic transfection experiments indicated negative relationships between miR-93-5p, miR-181a-5p, miR-34a-5p, and miR-26a-5p and Sirt1, Creb, Bcl-2, and Pten expression, respectively. Moreover, liraglutide increased Sirt1, Creb, and Bcl-2 expression levels and reduced Pten expression level. Conclusion Our results demonstrate the role of key miRNAs in the liraglutide-mediated regulation of endothelial cell function in diabetic rats.
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Affiliation(s)
- Qian Zhang
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Xinhua Xiao
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Jia Zheng
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Ming Li
- Key Laboratory of Endocrinology, Ministry of Health, Department of Endocrinology, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
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25
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Du T, Yang L, Xu X, Shi X, Xu X, Lu J, Lv J, Huang X, Chen J, Wang H, Ye J, Hu L, Shen X. Vincamine as a GPR40 agonist improves glucose homeostasis in type 2 diabetic mice. J Endocrinol 2019; 240:195-214. [PMID: 30400036 DOI: 10.1530/joe-18-0432] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 11/02/2018] [Indexed: 12/18/2022]
Abstract
Vincamine, a monoterpenoid indole alkaloid extracted from the Madagascar periwinkle, is clinically used for the treatment of cardio-cerebrovascular diseases, while also treated as a dietary supplement with nootropic function. Given the neuronal protection of vincamine and the potency of β-cell amelioration in treating type 2 diabetes mellitus (T2DM), we investigated the potential of vincamine in protecting β-cells and ameliorating glucose homeostasis in vitro and in vivo. Interestingly, we found that vincamine could protect INS-832/13 cells function by regulating G-protein-coupled receptor 40 (GPR40)/cAMP/Ca2+/IRS2/PI3K/Akt signaling pathway, while increasing glucose-stimulated insulin secretion (GSIS) by modulating GPR40/cAMP/Ca2+/CaMKII pathway, which reveals a novel mechanism underlying GPR40-mediated cell protection and GSIS in INS-832/13 cells. Moreover, administration of vincamine effectively ameliorated glucose homeostasis in either HFD/STZ or db/db type 2 diabetic mice. To our knowledge, our current work might be the first report on vincamine targeting GPR40 and its potential in the treatment of T2DM.
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MESH Headings
- Animals
- Blood Glucose/metabolism
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/prevention & control
- Diabetes Mellitus, Type 2/genetics
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/prevention & control
- Glucose/metabolism
- Homeostasis/drug effects
- Insulin Secretion/drug effects
- Insulin-Secreting Cells/drug effects
- Insulin-Secreting Cells/metabolism
- Male
- Mice
- Receptors, G-Protein-Coupled/agonists
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/metabolism
- Signal Transduction/drug effects
- Vasodilator Agents/pharmacology
- Vincamine/pharmacology
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Affiliation(s)
- Te Du
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
| | - Liu Yang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
| | - Xu Xu
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaofan Shi
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
| | - Xin Xu
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
| | - Jian Lu
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jianlu Lv
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xi Huang
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Jing Chen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
| | - Heyao Wang
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
| | - Jiming Ye
- School of Health and Biomedical Sciences, RMIT University, Victoria, Australia
| | - Lihong Hu
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xu Shen
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
- School of Pharmacy, University of Chinese Academy of Sciences, Beijing, China
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
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26
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Zhao Y, Wang Q, Jia M, Fu S, Pan J, Chu C, Liu X, Liu X, Liu Z. (+)-Sesamin attenuates chronic unpredictable mild stress-induced depressive-like behaviors and memory deficits via suppression of neuroinflammation. J Nutr Biochem 2019; 64:61-71. [DOI: 10.1016/j.jnutbio.2018.10.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 10/10/2018] [Accepted: 10/17/2018] [Indexed: 01/02/2023]
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27
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Hidayat AFA, Chan CK, Mohamad J, Kadir HA. Leptospermum flavescens Sm. protect pancreatic β cell function from streptozotocin involving apoptosis and autophagy signaling pathway in in vitro and in vivo case study. JOURNAL OF ETHNOPHARMACOLOGY 2018; 226:120-131. [PMID: 30118836 DOI: 10.1016/j.jep.2018.08.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/12/2018] [Accepted: 08/13/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL IMPORTANCE Leptospermum flavescens has been used traditionally in Malaysia to treat various ailments such as constipation, hypertension, diabetes and cancer. AIM OF STUDY To investigate the potential protective effects of L. flavescens in pancreatic β cells through inhibition of apoptosis and autophagy cell death mechanisms in in vitro and in vivo models. MATERIALS AND METHODS L. flavescens leaves were extracted using solvent in increasing polarities: hexane, ethyl acetate, methanol and water. All extracts were tested for INS-1 β cells viability stimulated by streptozotocin (STZ). The extract which promotes the highest cell protective activity was further evaluated for insulin secretion, apoptosis and autophagy signaling pathways. Then, the acute toxicity of extract was carried out in SD rats according to OECD 423 guideline. The active extract was tested in diabetic rats where the pancreatic β islets were evaluated for insulin, apoptosis and autophagy protein. RESULTS The methanolic extract of L. flavescens (MELF) was found to increase INS-1 β cells viability and insulin secretion against STZ. In addition, MELF has been shown to inhibit INS-1 β cells apoptosis and autophagy activity. Notably, there was no toxicity observed in SD rats when administered with MELF. Furthermore, MELF exhibited anti-hyperglycemic activity in diabetic rats where apoptosis and autophagy protein expression was found to be suppressed in pancreatic β islets. CONCLUSION MELF was found to protect pancreatic β cells function from STZ-induced apoptosis and autophagy in in vitro and in vivo.
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Affiliation(s)
- Ahmad Fadhlurrahman Ahmad Hidayat
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chim Kei Chan
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Jamaludin Mohamad
- Biohealth Program, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia.
| | - Habsah Abdul Kadir
- Biomolecular Research Group, Biochemistry program, Institute of Biological Science, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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28
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Liu Y, Han J, Zhou Z, Li D. Tangeretin inhibits streptozotocin-induced cell apoptosis via regulating NF-κB pathway in INS-1 cells. J Cell Biochem 2018; 120:3286-3293. [PMID: 30216514 DOI: 10.1002/jcb.27596] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/07/2018] [Indexed: 12/20/2022]
Abstract
Oxidative stress is considered to play an important role in inducing the pancreatic β-cells apoptosis and promoting the development of diabetes mellitus. Tangeretin is a plant-derived flavonoid that retains antidiabetic effects. However, the role of tangeretin in streptozotocin (STZ)-induced β-cell apoptosis remains unclear. In this study, we aimed to examine the effects of tangeretin on STZ-induced cell apoptosis and the underlying mechanisms implicated in vitro. Our results showed that tangeretin improved the cell viability in STZ-induced INS-1 cells. Tangeretin reduced the increase of apoptosis ratio and revered the altered expressions of Bax and Bcl-2 caused by STZ induction. Furthermore, the impairment of insulin secretion ability as well as a reduction in messenger RNA levels of insulin 1 and 2 was significantly attenuated by tangeretin in STZ-induced INS-1 cells. Moreover, tangeretin resulted in a significant decrease in reactive oxygen species content, accompanied by an evident increase in the activities of superoxide dismutase, catalase, and glutathione peroxidase. Mechanistic studies further revealed that tangeretin inhibited the NF-κB pathway in STZ-induced INS-1 cells. These data indicated that tangeretin improved the cell apoptosis induced by STZ in INS-1 cells, which might be partly due to its antioxidant potential. Furthermore, NF-κB was found to be involved in the protective effect of tangeretin. Collectively, the results indicated that tangeretin could be used as a therapeutic approach for diabetes mellitus treatment.
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Affiliation(s)
- Yang Liu
- Department of Endocrinology, Huaihe Hospital of Henan University, Kaifeng, Henan Province, China
| | - Jiakai Han
- Department of Endocrinology, Huaihe Hospital of Henan University, Kaifeng, Henan Province, China
| | - Zhenyu Zhou
- Department of Breast and Thyroid Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Dandan Li
- Department of Endocrinology, Huaihe Hospital of Henan University, Kaifeng, Henan Province, China
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29
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Alpha-Mangostin Improves Insulin Secretion and Protects INS-1 Cells from Streptozotocin-Induced Damage. Int J Mol Sci 2018; 19:ijms19051484. [PMID: 29772703 PMCID: PMC5983655 DOI: 10.3390/ijms19051484] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/04/2018] [Accepted: 05/13/2018] [Indexed: 12/13/2022] Open
Abstract
Alpha (α)-mangostin, a yellow crystalline powder with a xanthone core structure, is isolated from mangosteen (Garcinia mangostana), which is a tropical fruit of great nutritional value. The aim of the present study was to investigate the anti-diabetic effects of α-mangostin and to elucidate the molecular mechanisms underlying its effect on pancreatic beta (β)-cell dysfunction. To assess the effects of α-mangostin on insulin production, rat pancreatic INS-1 cells were treated with non-toxic doses of α-mangostin (1⁻10 μM) and its impact on insulin signaling was examined by Western blotting. In addition, the protective effect of α-mangostin against pancreatic β-cell apoptosis was verified by using the β-cell toxin streptozotocin (STZ). Our results showed that α-mangostin stimulated insulin secretion in INS-1 cells by activating insulin receptor (IR) and pancreatic and duodenal homeobox 1 (Pdx1) followed by phosphorylation of phospho-phosphatidylinositol-3 kinase (PI3K), Akt, and extracellular signal regulated kinase (ERK) signaling cascades, whereas it inhibited the phosphorylation of insulin receptor substrate (IRS-1) (Ser1101). Moreover, α-mangostin was found to restore the STZ-induced decrease in INS-1 cell viability in a dose-dependent manner. In addition, treatment of INS-1 cells with 50 μM STZ resulted in an increase in intracellular reactive oxygen species (ROS) levels, which was represented by the fluorescence intensity of 2',7'-dichlorodihydrofluorescein diacetate (DCFH-DA). This oxidative stress was decreased by co-treatment with 5 μM α-mangostin. Similarly, marked increases in the phosphorylation of P38, c-Jun N-terminal kinase (JNK), and cleavage of caspase-3 by STZ were decreased significantly by co-treatment with 5 μM α-mangostin. These results suggest that α-mangostin is capable of improving insulin secretion in pancreatic β-cells and protecting cells from apoptotic damage.
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30
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Kim J, Shin SH, Kang JK, Kim JW. HX-1171 attenuates pancreatic β-cell apoptosis and hyperglycemia-mediated oxidative stress via Nrf2 activation in streptozotocin-induced diabetic model. Oncotarget 2018; 9:24260-24271. [PMID: 29849938 PMCID: PMC5966269 DOI: 10.18632/oncotarget.24916] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 09/04/2017] [Indexed: 12/20/2022] Open
Abstract
Streptozotocin (STZ) acts specifically on pancreatic beta cells, inducing cell destruction and cell dysfunction, resulting in diabetes. Many studies have reported that nuclear factor-erythroid 2-related factor 2 (Nrf2), a main regulator of antioxidant expression, prevents and improves diabetes-related diseases. In this study, we investigated the antidiabetic effect of the newly discovered Nrf2 activator, HX-1171, in the STZ-induced diabetic mouse model. HX-1171 enhanced insulin secretion by reducing STZ-induced cell apoptosis, and decreased intracellular reactive oxygen species (ROS) generation by upregulating the expression of antioxidant enzymes through Nrf2 activation in INS-1 pancreatic beta cells. In STZ-induced diabetic mice, HX-1171 administration significantly lowered blood glucose levels and restored blood insulin levels. In the STZ-only injected mice, the pancreatic islets showed morphological changes and loss of function, whereas the HX-1171-treated group was similar to that of the control group. These results suggest that HX-1171 may be developed as a promising therapeutic agent for diabetes-related diseases.
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Affiliation(s)
- Jimin Kim
- Cell Factory Research Center, Division of Systems Biology and Bioengineering, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, University of Science and Technology, Daejeon, Republic of Korea
| | - Su-Hyun Shin
- Cell Factory Research Center, Division of Systems Biology and Bioengineering, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, University of Science and Technology, Daejeon, Republic of Korea
| | - Jong-Koo Kang
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Jae Wha Kim
- Cell Factory Research Center, Division of Systems Biology and Bioengineering, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, University of Science and Technology, Daejeon, Republic of Korea
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31
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Ye SF, Yang Y, Wu L, Ma WW, Zeng HH. Ethaselen: a novel organoselenium anticancer agent targeting thioredoxin reductase 1 reverses cisplatin resistance in drug-resistant K562 cells by inducing apoptosis. J Zhejiang Univ Sci B 2018; 18:373-382. [PMID: 28471109 DOI: 10.1631/jzus.b1600073] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
It has been reported that Ethaselen shows inhibitory effects on thioredoxin reductase (TrxR) activity and human tumor cell growth. In order to find an efficient way to reverse cisplatin resistance, we investigated the reversal effects of Ethaselen on cisplatin resistance in K562/cisplatin (CDDP) cells that were established by pulse-inducing human erythrocyte leukemic cell line K562, which are fivefold more resistant to cisplatin compared to K562 cells. The morphology and growth showed that the adhesion of K562/CDDP further decreased while the cell volume increased. The proliferation of K562/CDDP is strengthened. The antitumor activities in vitro were assessed by MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay and combination index (CI), showing the significant synergic effects of cisplatin and Ethaselen. Focusing on apoptosis, a series of comparisons was made between K562 and K562/CDDP. Cisplatin induced higher reactive oxygen species (ROS) generation in K562 and subsequently induced the formation of mitochondrial permeability transition pores (PTPs). In addition, cisplatin increased the ratio of Bax to Bcl-2 in K562, which can influence the mitochondrial membrane permeability. PTP formation and mitochondrial membrane permeabilization eventually resulted in the release of cytochrome c and activation of the Caspase pathway. However, these effects were not clearly seen in K562/CDDP, which may be the reason for the acquired CDDP resistance. However, Ethaselen can induce a high level of ROS in K562/CDDP by TrxR activity inhibition and increased ratio of Bax to Bcl-2 in K562/CDDP by nuclear factor κB (NF-κB) suppression, which subsequently induces the release of cytochrome c in K562/CDDP. This response is partly responsible for the reversal of the cisplatin resistance in K562/CDDP cells.
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Affiliation(s)
- Suo-Fu Ye
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China.,School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Yong Yang
- Keaise Clinical Examination Lab, Wuhan 430000, China
| | - Lin Wu
- Keaise Clinical Examination Lab, Wuhan 430000, China
| | - Wei-Wei Ma
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China.,School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Hui-Hui Zeng
- State Key Laboratory of Natural and Biomimetic Drugs, Peking University, Beijing 100191, China.,School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
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32
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Majdalawieh AF, Massri M, Nasrallah GK. A comprehensive review on the anti-cancer properties and mechanisms of action of sesamin, a lignan in sesame seeds (Sesamum indicum). Eur J Pharmacol 2017; 815:512-521. [DOI: 10.1016/j.ejphar.2017.10.020] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/15/2017] [Accepted: 10/11/2017] [Indexed: 01/17/2023]
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33
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Tao S, Ren Y, Zheng H, Zhao M, Zhang X, Zhu Y, Yang J, Zheng S. Salvianolic acid B inhibits intermittent high glucose-induced INS-1 cell apoptosis through regulation of Bcl-2 proteins and mitochondrial membrane potential. Eur J Pharmacol 2017; 814:56-62. [PMID: 28800882 DOI: 10.1016/j.ejphar.2017.08.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 07/19/2017] [Accepted: 08/07/2017] [Indexed: 12/22/2022]
Abstract
Blood glucose fluctuations, also referred to as intermittent high glucose, have been validated to be more harmful than sustained high glucose in exacerbating pancreatic dysfunction by inducing β cell apoptosis. Salvianolic acid B (Sal B), an aqueous component of Salvia miltiorrhiza, has been proved beneficial to pancreatic islet function in diabetes, but the underlying mechanisms remain to be elucidated. The present study investigated the protective effect of Sal B on INS-1 cells exposed to intermittent high glucose and the possible mechanisms implicated. The results indicated that Sal B was able to restore cell viability and suppress INS-1 cell apoptosis induced by intermittent high glucose. Preincubation with Sal B led to a significant decrease of caspase-9 and caspase-3 activity and poly ADP-ribose polymerase (PARP) cleavage. Exposure to intermittent high glucose induced significant up-regulation of proapoptotic proteins, down-regulation of antiapoptotic protein and depolarization of mitochondrial membrane potential (MMP) in INS-1 cells, while these changes were reversed effectively in Sal B treated groups. In addition, Sal B markedly attenuated intermittent high glucose-induced oxidative stress as manifested by notably decreased levels of intracellular reactive oxygen species and malondialdehyde (MDA). Taken together, these results indicate that Sal B is able to suppress intermittent high glucose-induced INS-1 cell apoptosis, which might be ascribed to regulation of Bcl-2 family protein expression and preservation of mitochondrial membrane potential.
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Affiliation(s)
- Shanjun Tao
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China
| | - Younan Ren
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China
| | - Haowen Zheng
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China
| | - Mengqiu Zhao
- Department of Basic Medicine, Anhui Vocational Institute of Population, Chizhou 247009, China
| | - Xu Zhang
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China
| | - Yuanmei Zhu
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China
| | - Jieren Yang
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China
| | - Shuguo Zheng
- Department of Pharmacology, Wannan Medical College, 22 West Wenchang Road, Wuhu 241002, China.
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34
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Elucidation of Molecular Mechanisms of Streptozotocin-Induced Oxidative Stress, Apoptosis, and Mitochondrial Dysfunction in Rin-5F Pancreatic β-Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7054272. [PMID: 28845214 PMCID: PMC5563420 DOI: 10.1155/2017/7054272] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 06/12/2017] [Accepted: 07/02/2017] [Indexed: 01/12/2023]
Abstract
Streptozotocin is a pancreatic beta-cell-specific cytotoxin and is widely used to induce experimental type 1 diabetes in rodent models. The precise molecular mechanism of STZ cytotoxicity is however not clear. Studies have suggested that STZ is preferably absorbed by insulin-secreting β-cells and induces cytotoxicity by producing reactive oxygen species/reactive nitrogen species (ROS/RNS). In the present study, we have investigated the mechanism of cytotoxicity of STZ in insulin-secreting pancreatic cancer cells (Rin-5F) at different doses and time intervals. Cell viability, apoptosis, oxidative stress, and mitochondrial bioenergetics were studied. Our results showed that STZ induces alterations in glutathione homeostasis and inhibited the activities of the respiratory enzymes, resulting in inhibition of ATP synthesis. Apoptosis was observed in a dose- and time-dependent manner. Western blot analysis has also confirmed altered expression of oxidative stress markers (e.g., NOS and Nrf2), cell signaling kinases, apoptotic protein-like caspase-3, PARP, and mitochondrial specific proteins. These results suggest that STZ-induced cytotoxicity in pancreatic cells is mediated by an increase in oxidative stress, alterations in cellular metabolism, and mitochondrial dysfunction. This study may be significant in better understanding the mechanism of STZ-induced β-cell toxicity/resistance and the etiology of type 1 diabetes induction.
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35
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Lee AS, Lee SH, Lee S, Yang BK. Effects of Streptozotocin, Bisphenol A and Diethylstilbestrol on Production of Reactive Oxygen Species and Lipid Peroxidation in the Boar Sperm. ACTA ACUST UNITED AC 2017. [DOI: 10.15616/bsl.2017.23.2.128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- A-Sung Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Sang-Hee Lee
- Institute of Animal Resources, Kangwon National University, Chuncheon 24341, Korea
| | - Seunghyung Lee
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
| | - Boo-Keun Yang
- College of Animal Life Sciences, Kangwon National University, Chuncheon 24341, Korea
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36
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Establishment of an ideal time window model in hypothermic-targeted temperature management after traumatic brain injury in rats. Brain Res 2017. [PMID: 28629741 DOI: 10.1016/j.brainres.2017.06.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Although hypothermic-targeted temperature management (HTTM) holds great potential for the treatment of traumatic brain injury (TBI), translation of the efficacy of hypothermia from animal models to TBI patientshas no entire consistency. This study aimed to find an ideal time window model in experimental rats which was more in accordance with clinical practice through the delayed HTTM intervention. Sprague-Dawley rats were subjected to unilateral cortical contusion injury and received therapeutic hypothermia at 15mins, 2 h, 4 h respectively after TBI. The neurological function was evaluated with the modified neurological severity score and Morris water maze test. The brain edema and morphological changes were measured with the water content and H&E staining. Brain sections were immunostained with antibodies against DCX (a neuroblast marker) and GFAP (an astrocyte marker). The apoptosis levels in the ipsilateral hippocampi and cortex were examined with antibodies against the apoptotic proteins Bcl-2, Bax, and cleaved caspase-3 by the immunofluorescence and western blotting. The results indicated that each hypothermia therapy group could improve neurobehavioral and cognitive function, alleviate brain edema and reduce inflammation. Furthermore, we observed that therapeutic hypothermia increased DCX expression, decreased GFAP expression, upregulated Bcl-2 expression and downregulated Bax and cleaved Caspase-3 expression. The above results suggested that HTTM at 2h or even at 4h post-injury revealed beneficial brain protection similarly, despite the best effect at 15min post-injury. These findings may provide relatively ideal time window models, further making the following experimental results more credible and persuasive.
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37
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Lee D, Kim KH, Lee J, Hwang GS, Lee HL, Hahm DH, Huh CK, Lee SC, Lee S, Kang KS. Protective effect of cirsimaritin against streptozotocin-induced apoptosis in pancreatic beta cells. J Pharm Pharmacol 2017; 69:875-883. [DOI: 10.1111/jphp.12719] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Accepted: 03/04/2017] [Indexed: 12/24/2022]
Abstract
Abstract
Objectives
Maintaining glucose homoeostasis is essential for the survival of cells. Despite the various health benefits of Korean thistle (Cirsium japonicum var. maackii), their effects on pancreatic β-cell apoptosis in type 1 diabetes mellitus and the underlying mechanisms remain unclear, and experimentally investigated in this study.
Methods
The effects of C. japonicum var. maackii and its active component cirsimaritin against streptozotocin (STZ)-induced cytotoxicity were assessed in INS-1 cells. By Western blotting analysis, protein expressions related to apoptosis were evaluated. The involvement of apoptosis was also confirmed with image-based cytometric assay and caspase activity tests.
Key findings
Cirsium japonicum var. maackii extract and cirsimaritin in non-toxic concentrations improved cell viability to near normal levels and protected INS-1 cells against STZ-induced damage. In addition, cirsimaritin reduced the intracellular oxidative stress induced by STZ. Cirsimaritin effectively suppressed apoptosis in pancreatic β cells by decreasing the activation of caspase-8 and caspase-3, BID and the DNA repair protein poly (ADP-ribose) polymerase (PARP) and increasing anti-apoptotic BCL-2 protein expression.
Conclusions
This study demonstrates the therapeutic potential and action mechanism of cirsimaritin for the prevention and treatment of type 1 diabetes mellitus.
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Affiliation(s)
- Dahae Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Ki Hyun Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Jaemin Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong, Korea
| | - Gwi Seo Hwang
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Hye Lim Lee
- College of Korean Medicine, Gachon University, Seongnam, Korea
| | - Dae-Hyun Hahm
- Acupuncture and Meridian Science Research Center, Kyung Hee University, Seoul, Korea
| | - Chang Ki Huh
- Imsil Research Institute of Cheese Science, Imsil, Korea
| | - Sang Cheon Lee
- Imsil Research Institute of Cheese Science, Imsil, Korea
| | - Sanghyun Lee
- Department of Integrative Plant Science, Chung-Ang University, Anseong, Korea
| | - Ki Sung Kang
- College of Korean Medicine, Gachon University, Seongnam, Korea
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38
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Ji W, Yuan M, Zhang L, Zhang H, Jiao J, Gao Z. Effect of p53β on human gastric cancer cells treated with recombinant mutated human TNF and cisplatin. Mol Med Rep 2017; 15:3865-3870. [PMID: 28393225 DOI: 10.3892/mmr.2017.6436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 01/27/2017] [Indexed: 11/05/2022] Open
Abstract
The present study aimed to investigate the role of tumour protein 53 isoform b (p53β) on human gastric cancer (GC) cell lines treated with recombinant mutated human tumour necrosis factor (rmhTNF) and cisplatin. The Cell Counting Kit‑8 assay was used to assess growth in the GC cell lines MKN45 and SGC7901, following treatment with rmhTNF in the presence or absence of cisplatin. Levels of p53β and bcl‑2 apoptosis regulator (bcl‑2) mRNA were assessed using reverse transcription‑polymerase chain reaction. The results demonstrated that growth was significantly inhibited by either cisplatin or rmhTNF treatments alone in MKN45 cells, and combination treatment with cisplatin and rmhTNF had a synergistic effect on growth inhibition of MKN45 cells. Notably, these observations were not evident in SGC7901 cells, where a mutant form of p53 is present. Treatment of MKN45 cells with rmhTNF did not affect bcl‑2 or p53β mRNA expression levels. However, treatment of MKN45 cells with cisplatin induced upregulation of p53β and downregulation of bcl-2 mRNA expression levels, and these effects were enhanced by combination treatment with rmhTNF. Pearson correlation analysis revealed a negative correlation between the expression of p53β and bcl‑2 mRNA, and a negative correlation between bcl-2 mRNA expression and the inhibition of cell growth. In conclusion, the inhibitory effect of cisplatin on the growth of MKN45 GC cells was enhanced by rmhTNF via unknown mechanisms that involved p53β, indicating that p53β may be an appropriate therapeutic target for the treatment of GC.
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Affiliation(s)
- Wansheng Ji
- Department of Gastroenterology, The Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Mingliang Yuan
- Department of Gastroenterology, Graduate School of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Li Zhang
- Department of Gastroenterology, The Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Hongmei Zhang
- Department of Gastroenterology, The Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Jianxin Jiao
- Department of Gastroenterology, The Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
| | - Zhixing Gao
- Department of Gastroenterology, The Affiliated Hospital of Weifang Medical University, Weifang, Shandong 261031, P.R. China
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Vinayagam R, Xu B. 7, 8-Dihydroxycoumarin (daphnetin) protects INS-1 pancreatic β-cells against streptozotocin-induced apoptosis. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2017; 24:119-126. [PMID: 28160851 DOI: 10.1016/j.phymed.2016.11.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 11/14/2016] [Accepted: 11/30/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND AND OBJECTIVE Daphnetin (7, 8-dihydroxycoumarin), a natural coumarin compound, is known to exhibit antioxidant and anti-inflammatrory effects. However, the underlying mechanisms of its anti-apoptotic and antidiabetic effects yet not been examined. Therefore, the present work studied the anti-apoptotic and anti-diabetic effects of daphnetin by in vitro experiments. METHODS The rat insulinoma (INS-1) cells were pre-treated with daphnetin at different concentrations (1, 10, 20 and 40µM) for 24h followed by exposition to streptozotocin (STZ) (3mM) for 12h. Effects of daphnetin and STZ on INS-1 cells were determined by MTT assay, glucose stimulated insulin secretion (GSIS) assay, lipid peroxidation, antioxidant status (SOD, CAT, GPx, and GST) Apoptosis staining (DAPI, Hoechst 33342, AO/EB and ROS) was performed by fluorescence microscopy, and Bcl-2, Bax and NF-κB protein expression was detected by Western blotting. RESULTS MTT assay indicated that the viability of INS-1 cells was significantly reduced with exposure to STZ for 12h as compared to control cells, while pre-treated with daphnetin for 24h resulted in a significant improvement of cell viability. The effects daphnetin treatment in INS-1 cells on insulin secretion was tested and results showed that the pre-treatment of daphnetin could improve GSIS. Further, daphnetin pre-treatment significantly reduced the levels of lipid peroxidation markers and also improved antioxidant enzymes' activities in STZ-induced INS-1 cells. Western blotting assay revealed that daphnetin could suppress apoptosis through up-regulation of anti-apoptotic Bcl-2 protein expression and the down-regulation of pro-apoptotic Bax and nuclear factor NF-κB protein levels. CONCLUSION The results showed that daphnetin might be used in treating diabetes due to its insulin stimulating property and subsequent regulation of apoptotic pathway.
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Affiliation(s)
- Ramachandran Vinayagam
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519085, China
| | - Baojun Xu
- Food Science and Technology Program, Beijing Normal University-Hong Kong Baptist University United International College, Zhuhai, Guangdong 519085, China.
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Fernandez-Gomez B, Ramos S, Goya L, Mesa MD, del Castillo MD, Martín MÁ. Coffee silverskin extract improves glucose-stimulated insulin secretion and protects against streptozotocin-induced damage in pancreatic INS-1E beta cells. Food Res Int 2016. [DOI: 10.1016/j.foodres.2016.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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41
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Salvianolic acid B improves vascular endothelial function in diabetic rats with blood glucose fluctuations via suppression of endothelial cell apoptosis. Eur J Pharmacol 2016; 791:308-315. [DOI: 10.1016/j.ejphar.2016.09.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Revised: 08/31/2016] [Accepted: 09/06/2016] [Indexed: 11/21/2022]
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42
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Zhang Y, Mei H, Shan W, Shi L, Chang X, Zhu Y, Chen F, Han X. Lentinan protects pancreatic β cells from STZ-induced damage. J Cell Mol Med 2016; 20:1803-12. [PMID: 27444655 PMCID: PMC5020630 DOI: 10.1111/jcmm.12865] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Accepted: 03/03/2016] [Indexed: 12/23/2022] Open
Abstract
Pancreatic β‐cell death or dysfunction mediated by oxidative stress underlies the development and progression of diabetes mellitus (DM). In this study, we evaluated the effect of lentinan (LNT), an active ingredient purified from the bodies of Lentinus edodes, on pancreatic β‐cell apoptosis and dysfunction caused by streptozotocin (STZ) and the possible mechanisms implicated. The rat insulinoma cell line INS‐1 were pre‐treated with the indicated concentration of LNT for 30 min. and then incubated for 24 hrs with or without 0.5 mM STZ. We found that STZ treatment causes apoptosis of INS‐1 cells by enhancement of intracellular reactive oxygen species (ROS) accumulation, inducible nitric oxide synthase (iNOS) expression and nitric oxide release and activation of the c‐jun N‐terminal kinase (JNK) and p38 mitogen‐activated protein kinase (MAPK) signalling pathways. However, LNT significantly increased cell viability and effectively attenuated STZ‐induced ROS production, iNOS expression and nitric oxide release and the activation of JNK and p38 MAPK in a dose‐dependent manner in vitro. Moreover, LNT dose‐dependently prevented STZ‐induced inhibition of insulin synthesis by blocking the activation of nuclear factor kappa beta and increasing the level of Pdx‐1 in INS‐1 cells. Together these findings suggest that LNT could protect against pancreatic β‐cell apoptosis and dysfunction caused by STZ and therefore may be a potential pharmacological agent for preventing pancreatic β‐cell damage caused by oxidative stress associated with diabetes.
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Affiliation(s)
- Yaqin Zhang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hongliang Mei
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China.,Department of Pharmacology, College of Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Shan
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Li Shi
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China.,The Affiliated Drum Tower Hospital of Nanjing Medical University, Nanjing, Jiangsu, China.,Changzhou No.2 People's Hospital, The Affiliated Hospital of Nanjing Medical University, Changzhou, Jiangsu, China
| | - Xiaoai Chang
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yunxia Zhu
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Fang Chen
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Xiao Han
- Department of Biochemistry and Molecular Biology, Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing Medical University, Nanjing, Jiangsu, China.
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Ahmad S, ElSherbiny NM, Jamal MS, Alzahrani FA, Haque R, Khan R, Zaidi SK, AlQahtani MH, Liou GI, Bhatia K. Anti-inflammatory role of sesamin in STZ induced mice model of diabetic retinopathy. J Neuroimmunol 2016; 295-296:47-53. [DOI: 10.1016/j.jneuroim.2016.04.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Revised: 03/30/2016] [Accepted: 04/01/2016] [Indexed: 12/24/2022]
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44
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Pektaş MB, Sadi G, Koca HB, Yuksel Y, Vurmaz A, Koca T, Tosun M. Resveratrol Ameliorates the Components of Hepatic Inflammation and Apoptosis in a Rat Model of Streptozotocin-Induced Diabetes. Drug Dev Res 2016; 77:12-9. [DOI: 10.1002/ddr.21287] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Accepted: 12/09/2015] [Indexed: 12/16/2022]
Affiliation(s)
- Mehmet Bilgehan Pektaş
- Department of Medical Pharmacology, Faculty of Medicine; Afyon Kocatepe University; Afyonkarahisar Turkey
| | - Gökhan Sadi
- Department of Biology, K.Ö. Science Faculty; Karamanoglu Mehmetbey University; Karaman Turkey
| | - Halit Bugra Koca
- Department of Medical Biochemistry, Faculty of Medicine; Afyon Kocatepe University; Afyonkarahisar Turkey
| | - Yasemin Yuksel
- Department of Histology, Faculty of Medicine; Afyon Kocatepe University; Afyonkarahisar Turkey
| | - Ayhan Vurmaz
- Department of Medical Biochemistry, Faculty of Medicine; Afyon Kocatepe University; Afyonkarahisar Turkey
| | - Tulay Koca
- Department of Medical Laboratory, Ataturk Vocational School of Health Services; Afyon Kocatepe University; Afyonkarahisar and Karaman Turkey
| | - Murat Tosun
- Department of Histology, Faculty of Medicine; Afyon Kocatepe University; Afyonkarahisar Turkey
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Merghani BH, Awadin WF, Elseady YY, Abu-Heakal SN. Protective Role of Wheat Germ Oil against Hyperglycemia and Hyperlipidemia in Streptozotocin Induced Diabetic Rats. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/ajava.2015.852.864] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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46
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Sun L, Wang C, Dai Y, Chu Y, Han J, Zhou J, Cai X, Huang W, Qian H. Coumaglutide, a novel long-acting GLP-1 analog, inhibits β-cell apoptosis in vitro and invokes sustained glycemic control in vivo. Eur J Pharmacol 2015; 767:211-9. [DOI: 10.1016/j.ejphar.2015.10.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 10/14/2015] [Accepted: 10/14/2015] [Indexed: 12/25/2022]
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