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Luo Q, Cai Y, Zhao Q, Jiang Y, Tian L, Liu Y, Liu WJ. Renal Protective Effects of Melatonin in Animal Models of Diabetes Mellitus-Related Kidney Damage: A Systematic Review and Meta-Analysis. J Diabetes Res 2022; 2022:3770417. [PMID: 35746917 PMCID: PMC9213184 DOI: 10.1155/2022/3770417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 04/05/2022] [Indexed: 12/09/2022] Open
Abstract
Diabetic nephropathy (DN)-chronic kidney damage caused by hyperglycemia-eventually develops into end-stage renal disease (ESRD). Melatonin is a powerful antioxidant that has a wide range of biological activities. Potentially helpful effects of melatonin on diabetic kidney disease have been found in several studies. However, its protective mechanisms are not clear and remain to be explored. In this review (CRD42021285429), we conducted a meta-analysis to estimate the effects and relevant mechanisms of melatonin for diminishing renal injuries in diabetes mellitus models. The Cochrane Library, PubMed, and EMBASE databases up to September 2021 were used. Random- or fixed-effects models were used for calculating the standardized mean difference (SMD) or 90% confidence interval (CI). The risk of bias was estimated using the SYRCLE's RoB tool. Statistical analysis was conducted with RevMan. A total of 15 studies including 224 animals were included in the analysis. The experimental group showed a remarkable decrease in serum creatinine (P = 0.002), blood urea nitrogen (P = 0.02), and urinary albumin excretion rate (UAER) (P < 0.00001) compared with the control group, while the oxidative stress index improved. The experimental group also showed a remarkable increase in superoxide dismutase (P = 0.21), glutathione (P < 0.0001), and catalase (P = 0.04) and a remarkable decrease in MDA (P < 0.00001) content compared with the control group. We concluded that melatonin plays a role in renal protection in diabetic animals by inhibiting oxidative stress. Moreover, it should be noted that fasting blood glucose was reduced in the experimental group compared with the control group. The kidney and body weights of the animals were not decreased in the diabetic animal model compared with the control group.
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Affiliation(s)
- Qian Luo
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Beijing 100700, China
| | - Yuzi Cai
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Beijing 100700, China
| | - Qihan Zhao
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Beijing 100700, China
| | - Yuhua Jiang
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Beijing 100700, China
| | - Lei Tian
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Beijing 100700, China
| | - Yuning Liu
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Beijing 100700, China
| | - Wei Jing Liu
- Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100700, China
- Zhanjiang Key Laboratory of Prevention and Management of Chronic Kidney Disease, Guangdong Medical University, Zhanjiang, Guangdong 524001, China
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Mansour DF, Saleh DO, Ahmed-Farid OA, Rady M, Bakeer RM, Hashad IM. Ginkgo biloba extract (EGb 761) mitigates methotrexate-induced testicular insult in rats: Targeting oxidative stress, energy deficit and spermatogenesis. Biomed Pharmacother 2021; 143:112201. [PMID: 34560547 DOI: 10.1016/j.biopha.2021.112201] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/13/2021] [Accepted: 09/13/2021] [Indexed: 12/23/2022] Open
Abstract
Methotrexate (MTX) is commonly used as a therapeutic agent in the treatment of malignancies and autoimmune disorders. Risk of subsequent infertility following MTX administration has been reported as a significant side effect due to testicular toxicity. The aim of the study was to evaluate the modulatory effects of Ginkgo biloba (standardized extract, EGb 761) on MTX-induced testicular oxidative stress, energy deficits and spermatogenic status in rats. All groups received intraperitoneal injection of MTX (0.5 mg/kg) twice weekly for four weeks except the control group that received the corresponding vehicles. Other groups received oral EGb761, at doses 25, 50 or 100 mg/kg/day, for four weeks, concurrently with MTX. Blood and semen sampling followed by testis dissection were performed 24 h after last EGb 761 treatment. Semen was examined for sperm progressive motility, percent of normal spermatozoa and sperm cell concentration as well as seminal plasma essential and non-essential amino acids. Serum LH, FSH and testosterone were detected as well as testicular MDA, GSH, GSSG, TNF-α, IL-1β, IL-6, NF-κB and the nuclear, cytoplasmic and mRNA expression levels of Nrf-2 besides the testicular cell energy; AMP, ADP and ATP. Histopathological studies of interstitial fibrosis and the severity of germ cell degeneration were also conducted. MTX induced significant decline in sperm quality along with decreased essential and non-essential amino acids in seminal plasma. MTX reduced serum FSH, LH and testosterone as well as testicular ATP, GSH and Nrf2, while increased levels of testicular ADP, AMP, MDA, GSSG and TNF-α. Results were confirmed by prominent interstitial fibrosis and severe germ cell degeneration in MTX group. Concurrent treatment with EGb 761 alleviated MTX-induced testicular insult evidenced by amelioration of oxidative stress biomarkers, energy functions, seminal sperms abnormalities and spermatogenesis status. The present study suggests a beneficial role of EGb 761 in MTX-induced testicular injury and subsequent distortion of spermatogenesis.
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Affiliation(s)
- Dina F Mansour
- Department of Pharmacology, Medical division, National Research Centre (ID: 60014618), Giza, Dokki 12622, Egypt
| | - Dalia O Saleh
- Department of Pharmacology, Medical division, National Research Centre (ID: 60014618), Giza, Dokki 12622, Egypt.
| | - Omar A Ahmed-Farid
- Department of Physiology, National Organization for Drug Control and Research, Giza, Egypt
| | - Mona Rady
- Department of Microbiology, Immunology and Biotechnology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
| | - Rofanda M Bakeer
- Department of Pathology, Faculty of Medicine, Helwan University, Egypt
| | - Ingy M Hashad
- Department of Biochemistry, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo, Egypt
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Chang TT, Chen YA, Li SY, Chen JW. Nrf-2 mediated heme oxygenase-1 activation contributes to the anti-inflammatory and renal protective effects of Ginkgo biloba extract in diabetic nephropathy. JOURNAL OF ETHNOPHARMACOLOGY 2021; 266:113474. [PMID: 33068650 DOI: 10.1016/j.jep.2020.113474] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 10/01/2020] [Accepted: 10/11/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ginkgo biloba extract (GbE) is derived from a medicinal plant and suggested as a treatment for diabetic nephropathy (DN), but the mechanism was not clarified. AIM OF STUDY The present study investigated whether GbE prevented DN via activation of heme oxygenase (HO)-1. MATERIALS AND METHODS Streptozotocin-induced diabetic mice were fed a high-fat diet to generate DN. Human and murine podocytes were used for the in vitro study. RESULTS GbE improved renal function via decreasing glomerular hypertrophy, the kidney/body weight ratio, and albuminuria in DN mice. GbE reversed the reduction of synaptopodin and nephrin and enhanced HO-1 expression in the kidneys of DN mice. GbE decreased the enhancement of TNF-α, IL-6, fibronectin, and lipid accumulation in the glomeruli of DN mice. GbE attenuated the uptake of oxidized low-density lipoprotein and reduced the production of ROS in high glucose-stimulated podocytes, and HO-1 inhibitor treatment abrogated the protective effects of GbE. Nuclear factor erythroid 2-related factor 2 (Nrf-2) siRNA significantly abolished the beneficial effects of GbE via decreased HO-1 expression and enhanced TNF-α and IL-6 levels. CONCLUSIONS GbE protected podocytes against hyperglycemia and prevented the development of DN via Nrf-2/HO-1 activation. Our findings provide further mechanistic insight into the potential use of GbE in clinical DN.
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Affiliation(s)
- Ting-Ting Chang
- Department and Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yi-An Chen
- Department and Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Szu-Yuan Li
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Nephrology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jaw-Wen Chen
- Department and Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan; Healthcare and Services Center, Taipei Veterans General Hospital, Taiwan; Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan; Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
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Oxidative Stress Markers in Chronic Kidney Disease with Emphasis on Diabetic Nephropathy. Antioxidants (Basel) 2020; 9:antiox9100925. [PMID: 32992565 PMCID: PMC7600946 DOI: 10.3390/antiox9100925] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 09/20/2020] [Accepted: 09/24/2020] [Indexed: 02/07/2023] Open
Abstract
Diabetes prevalence is increasing worldwide, especially through the increase of type 2 diabetes. Diabetic nephropathy occurs in up to 40% of diabetic patients and is the leading cause of end-stage renal disease. Various factors affect the development and progression of diabetic nephropathy. Hyperglycaemia increases free radical production, resulting in oxidative stress, which plays an important role in the pathogenesis of diabetic nephropathy. Free radicals have a short half-life and are difficult to measure. In contrast, oxidation products, including lipid peroxidation, protein oxidation, and nucleic acid oxidation, have longer lifetimes and are used to evaluate oxidative stress. In recent years, different oxidative stress biomarkers associated with diabetic nephropathy have been found. This review summarises current evidence of oxidative stress biomarkers in patients with diabetic nephropathy. Although some of them are promising, they cannot replace currently used clinical biomarkers (eGFR, proteinuria) in the development and progression of diabetic nephropathy.
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Comparing the renoprotective effects of the antioxidants melatonin, vitamin D and vitamin E in diabetic rats. J Taibah Univ Med Sci 2020; 15:351-357. [PMID: 33132806 PMCID: PMC7564901 DOI: 10.1016/j.jtumed.2020.05.007] [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: 04/02/2020] [Revised: 05/24/2020] [Accepted: 05/27/2020] [Indexed: 01/03/2023] Open
Abstract
Objectives Diabetes mellitus is associated with oxidative stress that leads to inflammation and diabetic nephropathy. This study aimed to determine the possible renoprotective effects of the antioxidants melatonin, vitamin D and vitamin E in diabetic rats. Methods We divided 108 albino rats into 12 groups. G1 group was fed a normal diet and did not receive any medication. G2 to G4 consisted of non-diabetic rats that were treated as follows: G2 with melatonin; G3 with vitamin E; G4 with vitamin D. Groups G5 to G12 consisted of diabetic rats that were treated as follows: G5 received no medication; G6 treated with insulin; G7 treated with melatonin; G8 treated with melatonin and insulin; G9 treated with vitamin E; G10 treated with vitamin E and insulin; G11 treated with vitamin D and G12 treated with vitamin D and insulin. Two months after treatment commenced, histological and biochemical examinations of glucose profile, oxidative stress status, renal function, homocysteine and TNF-α were performed. Results Total antioxidant capacity (TAC) increased significantly in groups G2, 7, 8, 10 and 11. TNF-α significantly increased in G2, but decreased in all other groups. Creatinine increased significantly in groups G5, 6, 7, 8, 9, 11 and 12. In the kidneys of the diabetic rats, thickened capillary basement membrane, diffuse mesangial sclerosis and nodular glomerulosclerosis was observed. Rats treated with melatonin showed marked improvement in these symptoms. However, in those treated with vitamin D and E, thickened capillary basement membrane and mesangial sclerosis was still present. Conclusions Melatonin, administered either with or without insulin had a significant biochemical antioxidant effect and histological renoprotective effect. Conversely, vitamin D and E did not appear to have any effects on the parameters measured.
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Shi R, Wang Y, An X, Ma J, Wu T, Yu X, Liu S, Huang L, Wang L, Liu J, Ge J, Qiu S, Yin H, Wang X, Wang Y, Yang B, Yu J, Sun Z. Efficacy of Co-administration of Liuwei Dihuang Pills and Ginkgo Biloba Tablets on Albuminuria in Type 2 Diabetes: A 24-Month, Multicenter, Double-Blind, Placebo-Controlled, Randomized Clinical Trial. Front Endocrinol (Lausanne) 2019; 10:100. [PMID: 30873118 PMCID: PMC6402447 DOI: 10.3389/fendo.2019.00100] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Accepted: 02/04/2019] [Indexed: 12/31/2022] Open
Abstract
Purpose: We investigated the effects of Traditional Chinese Medicine (TCM) on the occurrence and progression of albuminuria in patients with type 2 diabetes. Methods: In this randomized, double-blind, multicenter, controlled trial, we enrolled 600 type 2 diabetes without diabetic nephropathy (DN) or with early-stage DN. Patients were randomly assigned (1:1) to receive Liuwei Dihuang Pills (LWDH) (1.5 g daily) and Ginkgo biloba Tablets (24 mg daily) orally or matching placebos for 24 months. The primary endpoint was the change in urinary albumin/creatinine ratio (UACR) from baseline to 24 months. Results: There were 431 patients having UACR data at baseline and 24 months following-up in both groups. Changes of UACR from baseline to follow-up were not affected in both groups: -1.61(-10.24, 7.17) mg/g in the TCM group and -0.73(-7.47, 6.75) mg/g in the control group. For patients with UACR ≥30 mg/g at baseline, LWDH and Ginkgo biloba significantly reduced the UACR value at 24 months [46.21(34.96, 58.96) vs. 20.78(9.62, 38.85), P < 0.05]. Moreover, the change of UACR from baseline to follow-up in the TCM group was significant higher than that in the control group [-25.50(-42.30, -9.56] vs. -20.61(-36.79, 4.31), P < 0.05]. Conclusion: LWDH and Ginkgo biloba may attenuate deterioration of albuminuria in type 2 diabetes patients. These results suggest that TCM is a promising option of renoprotective agents for early stage of DN. Trial registration: The study was registered in the Chinese Clinical Trial Registry. (no. ChiCTR-TRC-07000037, chictr.org).
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Affiliation(s)
- Ruifeng Shi
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
| | - Yanping Wang
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
- Department of Endocrinology, Wuxi Third People's Hospital, Wuxi, China
| | - Xiaofei An
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Jianhua Ma
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | - Tongzhi Wu
- Discipline of Medicine and Centre of Research Excellence in Translating Nutritional Science to Good Health, University of Adelaide, Adelaide, SA, Australia
| | - Xiaojin Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Southeast University, Nanjing, China
| | - Su Liu
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Liji Huang
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Lijuan Wang
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Jingshun Liu
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Jing Ge
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Shanhu Qiu
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
| | - Han Yin
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
| | - Xiaolai Wang
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
| | - Yao Wang
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
| | - Bingquan Yang
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
| | - Jiangyi Yu
- Department of Endocrinology, Jiangsu Province Hospital of Traditional Chinese Medicine, Nanjing, China
- Jiangyi Yu
| | - Zilin Sun
- Department of Endocrinology, Zhongda Hospital, School of Medicine, Institute of Diabetes, Southeast University, Nanjing, China
- *Correspondence: Zilin Sun
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Du Y, Xu BJ, Deng X, Wu XW, Li YJ, Wang SR, Wang YN, Ji S, Guo MZ, Yang DZ, Tang DQ. Predictive metabolic signatures for the occurrence and development of diabetic nephropathy and the intervention of Ginkgo biloba leaves extract based on gas or liquid chromatography with mass spectrometry. J Pharm Biomed Anal 2018; 166:30-39. [PMID: 30599279 DOI: 10.1016/j.jpba.2018.12.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 11/27/2018] [Accepted: 12/11/2018] [Indexed: 11/28/2022]
Abstract
Diabetic nephropathy (DN) is one of the leading causes of death in diabetes mellitus (DM). Early warning and therapy has significant clinical value for DN. This research sought to find biomarkers to predict the occurrence and development of DN and the intervention of Ginkgo biloba leaves extract (GBE) by quantifying fatty acids, amino acids, and nucleosides and nucleobases in rat plasma. Samples were respectively collected at the weekend of 5-10 weeks after diabetic rats induced by streptozotocin were defined. Plasma fasting blood-glucose, kidney index, blood urea nitrogen, creatinine, urine albumin excretion and ultrastructural morphology of kidney were measured or observed. Fatty acids, amino acids and nucleosides and nucleobases in rat plasma were analyzed by gas chromatography or liquid phase chromatography and mass spectrometry, respectively. From the biochemical index and morphological change of kidney, the rats from the 5th to 7th week were in the stage of DM while from the begin of 8th week the rats were suggested in the early stage of DN. The results of quantitative metabolomics showed that 16 differential metabolites were related to the progression of DN, and oleic acid, glutamate and guanosine might be the potential biomarkers of kidney injury. 14 differential metabolites were related to GBE against the progression of DN, while oleic acid and glutamate might be the potential biomarkers of GBE against kidney injury. Those findings potentially promote the understanding of the pathogenic progression of DN and reveal the therapeutic mechanism of GBE against DN.
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Affiliation(s)
- Yan Du
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Bing-Ju Xu
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Xu Deng
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Xiao-Wen Wu
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Yin-Jie Li
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Shi-Rui Wang
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Yi-Nan Wang
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Shuai Ji
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Meng-Zhe Guo
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Dong-Zhi Yang
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China
| | - Dao-Quan Tang
- Key Laboratory of New Drug Research and Clinical Pharmacy of Jiangsu Province, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Department of Pharmaceutical Analysis, School of Pharmacy, Xuzhou Medical University, Xuzhou 221004, China; Center for Experimental Animals, Xuzhou Medical University, Xuzhou 221004, China.
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Influence of Standardized Extract Ginkgo biloba EGb761® Towards Quality of Life Indicators in Patients with Diabetes Mellitus Type 2. BIONANOSCIENCE 2018. [DOI: 10.1007/s12668-018-0550-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Qin Y, Zhai Q, Li Y, Cao M, Xu Y, Zhao K, Wang T. Cyanidin-3-O-glucoside ameliorates diabetic nephropathy through regulation of glutathione pool. Biomed Pharmacother 2018; 103:1223-1230. [PMID: 29864902 DOI: 10.1016/j.biopha.2018.04.137] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/15/2018] [Accepted: 04/17/2018] [Indexed: 12/31/2022] Open
Abstract
Diabetic nephropathy (DN) is a common complication of diabetes and the major cause of chronic kidney disease. Cyanidin 3-glucoside (C3G) is the most widespread anthocyanin in nature. In the present study, we aimed to investigate the possible effects of C3G on DN in db/db mice. We found that body weights and high levels of fasting blood glucose, serum insulin, C-peptide, glycosylated hemoglobin A1c, and systolic blood pressure in diabetic mice were significantly reduced by C3G. C3G also reduced the ratio of kidney to body weight and the levels of blood urea nitrogen (BUN), serum creatinine, urinary albumin content and albumin/creatinine ratio (ACR), ameliorated the pathological changes of kidneys, reduced the surface area of Bowman's capsule, glomerular tuft, Bowman's space, and decreased renal expression of collagen IV, fibronectin, transforming growth factor β 1 (TGFβ1), matrix metalloprotein 9 (MMP9) and α-smooth muscle actin (α-SMA) in db/db mice. The Lee's index, perirenal white adipose tissue weight, and high levels of blood and renal triglyceride and cholesterol were decreased by C3G. Moreover, C3G reduced systemic levels and renal expression of tumor necrosis factor ɑ (TNFɑ), IL-1ɑ, and monocyte chemotactic protein-1 (MCP-1), indicating the inhibition of inflammation. Furthermore, C3G increased glutathione (GSH) level and decreased GSSG level in kidneys of diabetic mice. The renal mRNA expression of glutamate-cysteine ligase catalytic subunit (GCLC) and glutamate-cysteine ligase modifier subunit (GCLM) was increased by C3G in diabetic mice. Buthionine sulphoximine (BSO), an inhibitor of GSH synthesis, inhibited the effects of C3G on glucose metabolic dysfunction and DN. The data demonstrates that enhancement of GSH pool is involved in the renal-protective effects of C3G. Overall, C3G could be a promising therapeutic option for attenuation of diabetes and DN.
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Affiliation(s)
- Yan Qin
- Ward 2, The Department of Endocrinology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Qianqian Zhai
- Ward 2, The Department of Endocrinology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Yan Li
- Ward 2, The Department of Endocrinology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Meng Cao
- Ward 2, The Department of Endocrinology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Yun Xu
- Ward 1, The Department of Endocrinology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Kelei Zhao
- The Department of Oncology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China
| | - Tao Wang
- Ward 2, The Department of Endocrinology, The First Affiliated Hospital of Xinxiang Medical University, Weihui 453100, Henan, China.
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Esin RG, Khairullin IK, Esin OR. [Cerebral insulin resistance: current concepts of the pathogenesis and possible therapeutic strategies]. Zh Nevrol Psikhiatr Im S S Korsakova 2018; 118:92-95. [PMID: 29460912 DOI: 10.17116/jnevro20181181192-95] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The review presents current concepts about the problem of cerebral insulin resistance (IR). It has now been established that cerebral IR plays a key role in the pathogenesis of degenerative and metabolic diseases of the brain. Based on literature data and own clinical experience, the authors recommend to use the standardized extract of ginkgo biloba EGb761 as a cellular protector, which increases insulin sensitivity of cells and reduces atherogenesis, in order to improve cognitive functions and quality of life in patients with diabetes mellitus.
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Affiliation(s)
- R G Esin
- Kazan State Medical Academy - the branch of Russian Medical Academy of Continuous Professional Education, Kazan, Russia; Kazan Federal University, Kazan, Russia
| | | | - O R Esin
- Kazan Federal University, Kazan, Russia
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Amelioration of renal structural changes in STZ-induced diabetic mice with ethanolic extract of Allium saralicum R.M. Fritsch. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s00580-018-2674-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Gao F, He X, Liang S, Liu S, Liu H, He Q, Chen L, Jiang H, Zhang Y. Quercetin ameliorates podocyte injury via inhibition of oxidative stress and the TGF-β1/Smad pathway in DN rats. RSC Adv 2018; 8:35413-35421. [PMID: 35547920 PMCID: PMC9087986 DOI: 10.1039/c8ra07935h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 10/04/2018] [Indexed: 12/18/2022] Open
Abstract
This is the first study to demonstrate that quercetin ameliorates podocyte injury via inhibition of the TGF-β1/Smad pathway.
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Affiliation(s)
- Fanfan Gao
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Xin He
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Shanshan Liang
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Sixiu Liu
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Hua Liu
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Quan He
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Lei Chen
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Hongli Jiang
- Dialysis Department of Nephrology Hospital
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
| | - Yali Zhang
- Department of Nephrology
- The First Affiliated Hospital of Xi'an Jiaotong University
- Xi'an 710061
- China
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Alamgeer, Iman S, Asif H, Saleem M. Evaluation of antihypertensive potential of Ficus carica fruit. PHARMACEUTICAL BIOLOGY 2017; 55:1047-1053. [PMID: 28187689 PMCID: PMC6130763 DOI: 10.1080/13880209.2017.1278611] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 10/15/2016] [Accepted: 12/07/2016] [Indexed: 05/31/2023]
Abstract
CONTEXT Ficus carica L. (Moraceae) fruit is said to possess cardiovascular activity and has been used empirically in traditional phytotherapies for the treatment of hypertension and various other cardiovascular diseases. OBJECTIVE This study investigated the antihypertensive and cardioinhibitory activity of the aqueous-methanol extract of F. carica fruit in rats. MATERIALS AND METHODS Extract in 250, 500 and 1000 mg/kg doses (p.o.) were administered to normotensive Sprague Dawley rats and blood pressure was measured using non-invasive technique. Hypertension was induced in rats by oral administration of 10% glucose for 3 weeks. Hypotensive effect of extract (1000 mg/kg p.o) was studied in normotensive and glucose-treated hypertensive rats. Langendorff's isolated heart technique was used to assess the effect of crude extract on force of contraction and heart rate. In addition, antioxidant potential, TPC, TFC were also assessed by DPPH free radical scavenging activity, Folin-Ciocalteu reagent and AlCl3 assay, respectively. Furthermore, phenolic compounds were analyzed using HPLC-DAD technique. RESULTS AND DISCUSSION The 1000 mg/kg dose decreased blood pressure significantly in normotensive and glucose-treated hypertensive rats. The isolated heart study showed that the extract produced negative inotropic and chronotropic effects but it failed to block the stimulatory effect of both adrenaline and CaCl2. HPLC studies on the F. carica extract indicated the presence of quercetin, gallic acid, caffeic acid, vanillic acid, syringic acid, coumaric acid and chromotropic acid. CONCLUSIONS This study demonstrated that aqueous methanol extract of F. carica fruit exerted hypotensive and antihypertensive effects in glucose-induced hypertensive rats.
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Affiliation(s)
- Alamgeer
- Department of Pharmacology, Faculty of Pharmacy, University of Sargodha, Sargodha, Pakistan
| | - Shifa Iman
- Department of Pharmacology, Faculty of Pharmacy, University of Sargodha, Sargodha, Pakistan
| | - Hira Asif
- Department of Pharmacology, Faculty of Pharmacy, University of Sargodha, Sargodha, Pakistan
| | - Muhammad Saleem
- Department of Pharmacy GC, University Faisalabad, Faisalabad, Pakistan
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Aqueous calyxes extract of Roselle or Hibiscus sabdariffa Linn supplementation improves liver morphology in streptozotocin induced diabetic rats. Arab J Gastroenterol 2017; 18:13-20. [PMID: 28336227 DOI: 10.1016/j.ajg.2017.02.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 11/13/2016] [Accepted: 02/11/2017] [Indexed: 01/23/2023]
Abstract
BACKGROUND AND STUDY AIMS The complex series of deleterious events among diabetes patients leads to multiple organ failure. Therefore, a holistic approach of treatment is urgently required to prevent worsening of complications. The present investigation was carried out to study the possible protective effects of Roselle or Hibiscus sabdariffa Linn (HSL) calyxes aqueous extract, as an antidiabetic and antioxidant agent against oxidative liver injury in streptozotocin-induced diabetic rats. MATERIAL AND METHODS A single dose of streptozotocin (45mg/kg body weight, iv) was used to induced diabetes in male Sprague Dawley rats which were then divided into two groups: Diabetic control (DC) and HSL-treated diabetic (DR) group. Normal rats were divided into normal control (NC), HSL-treated control (NR). Aqueous calyxes extract of HSL (100mg/kg/day, orally) was given for 28 consecutive days in the treated group. Weight, biochemical and histopathological (light and electron microscopic) parameters were compared in all groups. RESULTS Supplementation of HSL significantly lowered the level of fasting blood glucose and increased plasma insulin level in DR group compared to DC group (p<0.05). Alanine aminotransaminases and aspartate aminotransferase enzymes level were found to be significantly reduced in DR compared to DC. Microscopic examination demonstrated destruction of the liver architecture, cytoplasmic vacuolation of the hepatocytes and signs of necrosis in diabetic rats. Moreover, dilatation and congestion of blood vessels with leucocytes adherence were detected. Ultrastructural study using electron microscope showed homogeneous substance accumulation in nuclear chromatin, a decrease of organelles and mitochondrial degeneration in the diabetic rats. CONCLUSION Administration of HSL in diabetic rats causes significant decrease in hepatocyte destruction and prevented the changes associated with the diabetic condition. Thus, our findings provide a scientific rationale for the use of HSL as promising agent in preventing liver injury in diabetes.
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Hagh-Nazari L, Goodarzi N, Zangeneh MM, Zangeneh A, Tahvilian R, Moradi R. Stereological study of kidney in streptozotocin-induced diabetic mice treated with ethanolic extract of Stevia rebaudiana (bitter fraction). ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s00580-016-2398-7] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Xu YY, Zeng QB, Yao ML, Yu C, Li J, Zhang AH. A possible new mechanism and drug intervention for kidney damage due to arsenic poisoning in rats. Toxicol Res (Camb) 2016; 5:511-518. [PMID: 30090365 PMCID: PMC6061977 DOI: 10.1039/c5tx00165j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 12/30/2015] [Indexed: 11/21/2022] Open
Abstract
Arsenic poisoning is a worldwide endemic disease that affects thousands of people. Currently, the aetiology of the disease is known, but its pathogenesis is uncharacterized and there is no specific treatment. We established a rat model of coal-burning arsenic poisoning by feeding the animals corn powder baked with high arsenic coal. By observing subsequent changes in kidney and immune function, we found that arsenic induces both kidney and immune damage. Furthermore, there is a significant correlation between kidney and immune damage. Moreover, Ginkgo biloba, a known immune enhancer, was used as an intervention agent in arsenic poisoned rats to validate the relationship between kidney and immune damage. Meanwhile, we also explored the mechanism of Ginkgo biloba treatment of kidney damage in burning-coal arsenic poisoned rats. We found that Ginkgo biloba enhanced immune function in rats with arsenic poisoning and ameliorated arsenic-induced kidney damage. These results suggest that immune suppression may be one of the mechanisms underlying arsenic-induced kidney damage and that Ginkgo biloba might relieve kidney damage by enhancing immune function.
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Affiliation(s)
- Yu-Yan Xu
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Qi-Bing Zeng
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Mao-Lin Yao
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Chun Yu
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Jun Li
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
| | - Ai-Hua Zhang
- Key Laboratory of Environment Pollution Monitoring and Disease Control , Ministry of Education; Department of Toxicology , School of Public Health , Guizhou Medical University , Guiyang , Guizhou 550025 , China . ; ; Tel: +86 851 8841 6172
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Myrciaria cauliflora extracts attenuate diabetic nephropathy involving the Ras signaling pathway in streptozotocin/nicotinamide mice on a high fat diet. J Food Drug Anal 2016; 24:136-146. [PMID: 28911396 PMCID: PMC9345440 DOI: 10.1016/j.jfda.2015.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 09/04/2015] [Accepted: 11/11/2015] [Indexed: 11/20/2022] Open
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Yilmaz M, Rencuzogullari E, Canli M. The effects of cyfluthrin on some biomarkers in the liver and kidney of Wistar rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:4747-4752. [PMID: 25339534 DOI: 10.1007/s11356-014-3734-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 10/15/2014] [Indexed: 06/04/2023]
Abstract
Pesticides can cause oxidative stress resulting to deleterious effects in animal metabolisms. Cyfluthrin is a synthetic pyrethroid used worldwide to protect crops and to eliminate pests. Thus, the aim of this study was to investigate the effects of the cyfluthrin on the level of malondialdehyde (MDA) and activities of catalase (CAT), glutathione peroxidase (GPx), and acetylcholinesterase (AChE) in the liver and kidney of Wistar Albino Sprague Dawley rats (Rattus norvegicus var. albinos) following intraperitoneal treatment of cyfluthrin (1.2, 12, and 120 mg/kg b.w./day) for 21 days. Comparisons were made with two control solutions named as serum physiologic and solvent in which cyfluthrin was dissolved. CAT activity in the liver and kidney of rats did not change after the lowest cyfluthrin treatment, while its activity significantly decreased at the higher doses. In general, cyfluthrin significantly decreased the activity of GPx in the liver and kidney at all doses, while MDA levels in the liver increased at all doses. Cyfluthrin significantly decreased AChE activity in the liver of rats at all doses, while this was true at the highest dose for the kidney. This study showed that the studied biomarkers were effective in determining the toxic effects of cyfluthrin. Thus, they should be used to monitor pesticide-affected areas before untargeted animals, including humans who suffer from the use of pesticides.
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Affiliation(s)
- Mehmet Yilmaz
- Department of Biology, Cukurova University Faculty of Sciences and Letters, Adana, Turkey
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Esin RG, Naprienko MV, Mukhametova ER, Khairullin IK, Esin OR. [Tanakan as a multimodal cytoprotective factor in general medicine (part II)]. Zh Nevrol Psikhiatr Im S S Korsakova 2015; 115:177-182. [PMID: 26978514 DOI: 10.17116/jnevro2015115112177-182] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The second section of the review provides an update of the data on mechanisms of action of a standardized extract of Ginkgo biloba EGb761® (tanakan) and its efficacy in treatment of depression, pain, complications of diabetes, Parkinson disease, tinnitus and dizziness, reproductive dysfunction. Updated data enable to use EGb761® (tanakan) as a highly-effective cytoprotective agent in treatment of cardiovascular, degenerative and metabolic diseases of the nervous system, inner ear disturbances (tinnitus), dysfunction of reproductive system as well as in prevention and treatment of stress-induced disorders.
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Affiliation(s)
- R G Esin
- Kazan State Medical Academy, Kazan; Kazan Federal University, Kazan
| | - M V Naprienko
- Sechenov First Moscow State Medical University, Moscow
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Tang D, Yu Y, Zheng X, Wu J, Li Y, Wu X, Du Q, Yin X. Comparative investigation of in vitro biotransformation of 14 components in Ginkgo biloba extract in normal, diabetes and diabetic nephropathy rat intestinal bacteria matrix. J Pharm Biomed Anal 2014; 100:1-10. [DOI: 10.1016/j.jpba.2014.07.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2014] [Revised: 07/12/2014] [Accepted: 07/18/2014] [Indexed: 12/01/2022]
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She S, Liu W, Li T, Hong Y. Effects of puerarin in STZ-induced diabetic rats by oxidative stress and the TGF-β1/Smad2 pathway. Food Funct 2014; 5:944-50. [PMID: 24595557 DOI: 10.1039/c3fo60565e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The present study aimed to investigate the effects of pueraria on streptozotocine (STZ)-induced renal damage and its possible mechanisms. Wistar rats were randomly divided into five groups: the normal control group, diabetes untreated model group, two dosages (140 and 200 mg per kg bw per day) of puerarin treatment groups and a positive control group. Rats were studied 30 days after the STZ treatment, and the diabetes untreated model group presented significantly higher kidney index, blood glucose, triglyceride (TG), total cholesterol (TC), malondialdehyde (MDA), interferon-γ (IFN-γ), and IFN-γ/IL-4 levels, lower body weight, fasting blood insulin (FPI), IL-4, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px) and nitric oxide (NO) levels and worse renal function (higher blood urea nitrogen (BUN), serum creatinine (SCr), urine protein (UP) levels and glomerular extracellular matrix (relative area)) compared with the normal control group (p < 0.05). Furthermore, RT-FQ-PCR and western blot analyses showed that TGF-β1, Smad2, CTGF and FN protein and mRNA expression was significantly increased in the diabetes untreated model group compared with the normal control group. In contrast, the puerarin treatment dose-dependently significantly decreased the kidney index, blood glucose, TG, TC, MDA, IFN-γ, and IFN-γ/IL-4 levels, increased the body weight, FPI, IL-4, SOD, CAT, GSH-Px and NO levels and improved the renal function (lower BUN, SCr, UP levels and glomerular extracellular matrix (relative area)) in puerarin treatment groups (p < 0.05). In addition, the mRNA and protein expression of TGF-β1, Smad2, CTGF and FN was downregulated. It can be concluded that puerarin exerted its anti-diabetic effect on the STZ-treated rats through the inhibition of the TGF-β1/Smad2 pathway.
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Affiliation(s)
- ShaoYi She
- Department of Urology, The First Affiliated Hospital of Shantou University Medical College, Shantou, PR China
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Ginkgo biloba Extract for Patients with Early Diabetic Nephropathy: A Systematic Review. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:689142. [PMID: 23533513 PMCID: PMC3595672 DOI: 10.1155/2013/689142] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Accepted: 09/29/2012] [Indexed: 01/01/2023]
Abstract
Objectives. To evaluate the effectiveness and safety of a Ginkgo biloba extract for patients with early diabetic nephropathy. Methods. Randomised controlled trials (RCTs) conducted on adults with early diabetic nephropathy which used Gingko biloba extract were included. The major databases were searched, and manufacturers of Gingko biloba products were contacted for information on any published or unpublished studies. Two authors independently extracted the data from the included studies. Data analysis was conducted using Review Manager 5.0 software. Results. Sixteen RCTs were included. Ginkgo biloba extract decreased the urinary albumin excretion rate (UAER), fasting blood glucose (FBG), serum creatinine (SCR), and blood urea nitrogen (BUN). The extract also improved hemorheology. The methodological quality in the included studies was low. The explicit generation of the allocation sequence was described in only 6 trials. None of the included trials were confirmed to use blinding. Three studies had observed adverse events. One study using angiotensin-converting enzyme inhibitor (ACEi) reported mild cough in both groups. No serious adverse effects were reported. Conclusions. Gingko biloba extract is a valuable drug which has prospect in treating early diabetic nephropathy, especially with high UAER baseline level. The safety for early diabetic nephropathy is uncertain. Long-term, double-blinded RCTs with large sample sizes are still needed to provide stronger evidence.
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Tavafi M. Diabetic nephropathy and antioxidants. J Nephropathol 2013; 2:20-7. [PMID: 24475422 DOI: 10.5812/nephropathol.9093] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2012] [Accepted: 10/15/2012] [Indexed: 02/07/2023] Open
Abstract
CONTEXT Oxidative stress has crucial role in pathogenesis of diabetic nephropathy (DN). Despite satisfactory results from antioxidant therapy in rodent, antioxidant therapy showed conflicting results in combat with DN in diabetic patients. EVIDENCE ACQUISITIONS Directory of Open Access Journals (DOAJ), Google Scholar,Pubmed (NLM), LISTA (EBSCO) and Web of Science have been searched. RESULTS Treatment of DN in human are insufficient with rennin angiotensin system (RAS) blockers, so additional agent ought to combine with this management. Meanwhile based on DN pathogenesis and evidences in experimental and human researches, the antioxidants are the best candidate. New multi-property antioxidants may be improved human DN that show high power antioxidant capacity, long half-life time, high permeability to mitochondrion, improve body antioxidants enzymes activity and anti-inflammatory effects. CONCLUSIONS Based on this review and our studies on diabetic rats, rosmarinic acid a multi-property antioxidant may be useful in DN patients, but of course, needs to be proven in clinical trials studies.
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Affiliation(s)
- Majid Tavafi
- Department of Anatomy, Lorestan University of Medical Sciences, Faculty of Medicine, Khoram Abad, Iran
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El Mesallamy HO, Metwally NS, Soliman MS, Ahmed KA, Abdel Moaty MM. The chemopreventive effect of Ginkgo biloba and Silybum marianum extracts on hepatocarcinogenesis in rats. Cancer Cell Int 2011; 11:38. [PMID: 22040519 PMCID: PMC3225333 DOI: 10.1186/1475-2867-11-38] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Accepted: 10/31/2011] [Indexed: 02/08/2023] Open
Abstract
Background/objective This study was designed to evaluate the potential chemopreventive activities of Ginkgo biloba extract (EGb) and Silybum marianum extract (silymarin) against hepatocarcinogenesis induced by N-nitrosodiethylamine (NDEA) in rats. Methods Rats were divided into 6 groups. Group 1 served as normal control rats. Group 2 animals were intragastrically administrated NDEA at a dose of 10 mg/kg five times a week for 12 weeks to induce hepatocellular carcinoma (HCC). Groups 3 and 4 animals were pretreated with silymarin and EGb respectively. Groups 5 and 6 animals were posttreated with silymarin and EGb respectively. The investigated parameters in serum are alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyltransferase (GGT) and vascular endothelial growth factor (VEGF). The investigated parameters in liver tissue are malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR) and comet assay parameters. Results In NDEA group, MDA level was elevated with subsequent decrease in GSH level and SOD, GPx and GR activities. In addition, NDEA group revealed a significant increase in serum ALT, AST and GGT activities and VEGF level. Furthermore, NDEA administrated animals showed a marked increase in comet assay parameters. These biochemical alterations induced by NDEA were confirmed by the histopathological examination of rat livers intoxicated with NDEA that showed an obvious cellular damage and well differentiated HCC. In contrast, silymarin+NDEA treated groups (3&5) and EGb+NDEA treated groups (4&6) showed a significant decrease in MDA level and a significant increase in GSH content and SOD, GPx and GR activities compared to NDEA group. Silymarin and EGb also beneficially down-regulated the increase in serum ALT, AST, GGT activities and VEGF level induced by NDEA. In addition, silymarin and EGb significantly decreased comet assay parameters. Histopathological examination of rat livers treated with either silymarin or EGb exhibited an improvement in the liver architecture compared to NDEA group. Conclusions The obtained findings suggested that silymarin and EGb may have beneficial chemopreventive roles against hepatocarcinogenesis through their antioxidant, antiangiogenic and antigenotoxic activities.
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Affiliation(s)
- Hala O El Mesallamy
- Therapeutical Chemistry Department, Pharmaceutical and Drug Industries Research Division, National Research Centre (NRC), Tahrir st,, Dokki, Giza, Egypt.
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In vitro suppression of quercetin on hypertrophy and extracellular matrix accumulation in rat glomerular mesangial cells cultured by high glucose. Fitoterapia 2011; 82:920-6. [DOI: 10.1016/j.fitote.2011.05.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 05/03/2011] [Accepted: 05/06/2011] [Indexed: 12/29/2022]
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Taki Y, Hagiwara E, Hirose C, Shinozuka K, Umegaki K, Yamada S. Effects of Ginkgo biloba extract on the pharmacokinetics and pharmacodynamics of tolbutamide in protein-restricted rats. J Pharm Pharmacol 2011; 63:1238-43. [DOI: 10.1111/j.2042-7158.2011.01327.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
Objectives
Effects of repeated administration of Ginkgo biloba extract on pharmacokinetics and pharmacodynamics of tolbutamide were examined in rats fed a low-protein diet.
Methods
Rats were given a low (7% casein) or control (20% casein) protein diet for 21 days and administered Ginkgo biloba extract (100 mg/kg per day) for the last 5 days. Tolbutamide was co-administered on the last day. Blood glucose and plasma tolbutamide concentrations were determined over the subsequent 12 h and the activity of hepatic cytochrome P450s were determined at 12 h after dosing.
Key findings
There were significant decreases in body weight, the ratio of liver to body weight, and plasma albumin concentrations in rats on the low-protein diet compared with controls. The hypoglycaemic effect of tolbutamide was significantly greater and the concentration of the drug in plasma was higher in the former group. The repeated administration of Ginkgo biloba extract had little influence on the hypoglycaemic effect of tolbutamide, but tended to decrease the drug concentration in plasma of control rats, while it reduced significantly the hypoglycaemic action and plasma concentration of tolbutamide in the protein-restricted rats.
Conclusions
The effects of Ginkgo biloba extract on the pharmacokinetics and pharmacodynamics of tolbutamide were significantly enhanced in rats on the low-protein diet.
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Affiliation(s)
- Yuko Taki
- Department of Pharmacokinetics and Pharmacodynamics and Global Center of Excellence (COE) Program, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Tokyo, Japan
| | - Eri Hagiwara
- Department of Pharmacokinetics and Pharmacodynamics and Global Center of Excellence (COE) Program, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Tokyo, Japan
| | - Chiemi Hirose
- Department of Pharmacokinetics and Pharmacodynamics and Global Center of Excellence (COE) Program, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Tokyo, Japan
| | - Kazumasa Shinozuka
- Department of Pharmacology, School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, Nishinomiya, Tokyo, Japan
| | - Keizo Umegaki
- National Institute of Health and Nutrition, Tokyo, Japan
| | - Shizuo Yamada
- Department of Pharmacokinetics and Pharmacodynamics and Global Center of Excellence (COE) Program, School of Pharmaceutical Sciences, University of Shizuoka, Shizuoka, Tokyo, Japan
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Tang DQ, Wei YQ, Gao YY, Yin XX, Yang DZ, Mou J, Jiang XL. Retracted
: Protective Effects of Rutin on Rat Glomerular Mesangial Cells Cultured in High Glucose Conditions. Phytother Res 2011; 25:1640-7. [DOI: 10.1002/ptr.3461] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2010] [Revised: 02/01/2011] [Accepted: 02/02/2011] [Indexed: 01/09/2023]
Affiliation(s)
- Dao-quan Tang
- Department of Pharmaceutical Analysis; School of Pharmacy; Xuzhou Medical College; Xuzhou 221004 China
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
| | - Ya-qin Wei
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
| | - Yuan-yuan Gao
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
| | - Xiao-xing Yin
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
- Department of Clinical Pharmacology; School of Pharmacy; Xuzhou Medical College; Xuzhou 221004 China
| | - Dong-zhi Yang
- Department of Pharmaceutical Analysis; School of Pharmacy; Xuzhou Medical College; Xuzhou 221004 China
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
| | - Jie Mou
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
| | - Xiang-lan Jiang
- Department of Pharmaceutical Analysis; School of Pharmacy; Xuzhou Medical College; Xuzhou 221004 China
- Key Laboratory of New Drug and Clinical Application; Xuzhou Medical College; Xuzhou 221004 China
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Tavafi M, Ahmadvand H, Tamjidipoor A, Delfan B, Khalatbari AR. Satureja khozestanica essential oil ameliorates progression of diabetic nephropathy in uninephrectomized diabetic rats. Tissue Cell 2010; 43:45-51. [PMID: 21185580 DOI: 10.1016/j.tice.2010.11.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2010] [Revised: 11/17/2010] [Accepted: 11/27/2010] [Indexed: 01/08/2023]
Abstract
Diabetic nephropathy is the common cause of leading to end stage of renal disease (ESRD). Satureja khozestanica essential oil (SKEO) was used as an antioxidant and antidiabetic for the inhibition of diabetic nephropathy. Forty male rats were uninephrectomized and divided in four groups randomly; group one as control, group two diabetic untreatment, groups three and four treatment with SKEO by 250 or 500 ppm in drinking water, respectively. Diabetes was induced in the second, third and fourth groups by alloxan injection subcutaneously. After eight weeks treatment, serum malondialdehyde, serum creatinine and serum urea were measured. The kidney paraffin sections were stained by periodic acid Schiff method. Glomerular volume and glomerular number were estimated by stereological rules. Glomerular sclerosis was studied semi-quantitatively. The means were compared by SPSS 13 software and Mann-Whitney test at p<0.05. Satureja khozestanica essential oil (250 or 500 ppm) significantly inhibited the progression of glomerular hypertrophy, glomerular number loss, glomerulosclerosis, lipid peroxidation, serum urea and creatinine compared with the diabetic untreated group. The level of glomerular number, serum malondialdehyde, serum creatinine and urea in the treated groups was significantly maintained at the same level as that of the control group. In conclusion, satureja essential oil significantly can ameliorate glomerular hypertrophy, loss of glomerular number, glomerulosclerosis and attenuated serum urea and serum creatinine in diabetic rats.
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Affiliation(s)
- Majid Tavafi
- Department of Anatomy, Lorestan University of Medical Sciences, Faculty of Medicine, Khoram Abad, Iran.
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Kim HJ, Kim YC. Antidiabetic and renoprotective effects of Corni Fructus extract in db/db mice. Mol Cell Toxicol 2010. [DOI: 10.1007/s13273-010-0020-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Fernandes ES, Pinto RM, de Paula Reis JE, de Oliveira Guerra M, Peters VM. Effects of Ginkgo biloba extract on the embryo-fetal development in Wistar rats. ACTA ACUST UNITED AC 2010; 89:133-8. [PMID: 20437472 DOI: 10.1002/bdrb.20235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Ginkgo biloba extract (GBE) is an herbal medicine used for treating neurodegenerative diseases, cerebrovascular insufficiency, peripheral arterial occlusive disease, and also vestibular disturbance. Some components of GBE have presented estrogenic effects and, in a previous study, high dosages of GBE caused intra-uterine growth retardation in fetuses of Wistar rats treated during the fetogenesis period. METHODS Pregnant Wistar rats were treated, through gavage, with different dosages of aqueous GBE (3.5, 7.0, and 14.0 mg/Kg/day), during the tubal transit and implantation period. Rats were killed on the 15th day of pregnancy and the following parameters were evaluated: clinical symptoms of maternal toxicity; maternal body weight; feed and water intake; maternal liver, kidney, and ovary weights; number of corpora lutea; implants per group ratio; pre- and post-implantation loss per group ratio; live fetuses mean; dead fetuses percentage; fetus and placenta weight per offspring ratio; and fetal external malformation. RESULTS No significant alteration was found for both the maternal and embryonic parameters evaluated. CONCLUSIONS The GBE treatment in pregnant Wistar rats, during the tubal transit and implantation period, caused no toxic effect on the maternal organism and did not induce embryonic death, growth retardation, and/or fetal malformations.
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Su J, Zhang P, Zhang JJ, Qi XM, Wu YG, Shen JJ. Effects of total glucosides of paeony on oxidative stress in the kidney from diabetic rats. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2010; 17:254-260. [PMID: 19758795 DOI: 10.1016/j.phymed.2009.07.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2009] [Revised: 05/29/2009] [Accepted: 07/02/2009] [Indexed: 05/28/2023]
Abstract
TGP, extracted from the traditional Chinese herb root of Paeonia lactiflora pall, has been shown to have therapeutic effect in experimental diabetic nephropathy. However, its mechanism is not fully understood. In this study, the effects of TGP on oxidative stress were investigated in the kidney of diabetic rats induced by streptozotocin. TGP (50, 100, 200mg/kg) was orally administered once a day for 8 weeks. TGP treatment in all three doses significantly lowered 24 h urinary albumin excretion rate in diabetic rats and attenuated glomerular volume. TGP treatment with 100 and 200mg/kg significantly reduced indices for tubulointerstitial injury in diabetic rats. The level of MDA was significantly increased in the kidney of diabetic rats and attenuated by TGP treatment at the dose of 200mg/kg. TGP treatment in a dose-dependent manner decreased the level of 3-NT protein of the kidney which increased under diabetes. T-AOC was significantly reduced in diabetic rat kidney and remarkably increased by TGP treatment at the dose of 100 and 200mg/kg. Activity of antioxidant enzyme such as SOD, CAT was markedly elevated by TGP treatment with 200mg/kg. Western blot analysis showed that p-p38 MAPK and NF-kappaB p65 protein expression increased in diabetic rat kidney, which were significantly decreased by TGP treatment. It seems likely that oxidative stress is increased in the diabetic rat kidneys, while TGP can prevent diabetes-associated renal damage against oxidative stress.
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Affiliation(s)
- Jing Su
- Department of Nephrology, the First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, PR China
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Pinto MDS, Kwon YI, Apostolidis E, Lajolo FM, Genovese MI, Shetty K. Potential of Ginkgo biloba L. leaves in the management of hyperglycemia and hypertension using in vitro models. BIORESOURCE TECHNOLOGY 2009; 100:6599-6609. [PMID: 19665890 DOI: 10.1016/j.biortech.2009.07.021] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2008] [Revised: 07/07/2009] [Accepted: 07/07/2009] [Indexed: 05/28/2023]
Abstract
Leaves from four different Ginkgo biloba L. trees (1 and 2--females; 3 and 4--males), grown at the same conditions, were collected during a period of 5 months (from June to October, 2007). Water and 12% ethanol extracts were analyzed for total phenolics content, antioxidant activity, phenolic profile, and the potential in vitro inhibitory effects on alpha-amylase, alpha-glucosidase, and Angiotensin I-Converting Enzyme (ACE) enzymes related to the management of diabetes and hypertension. The results indicated a significant difference among the trees in all functional benefits evaluated in the leaf extracts and also found important seasonal variation related to the same functional parameters. In general, the aqueous extracts had higher total phenolic content than the ethanolic extracts. Also, no correlation was found between total phenolics and antioxidant activity. In relation to the ACE inhibition, only ethanolic extracts had inhibitory activity.
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Affiliation(s)
- Marcia Da Silva Pinto
- Laboratório de Química, Bioquímica e Biologia Molecular de Alimentos, Departamento de Alimentos e Nutrição Experimental, FCF, Universidade de São Paulo, Av. Prof. Lineu Prestes 580, Bloco 14, 05508-900 São Paulo, SP, Brazil
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Tang D, Yin Y, Zhang Z, Gao Y, Wei Y, Chen Y, Han L. Simultaneous HPLC-DAD analysis of five flavonoids in diabetic rat plasma and its application in the study of pharmacokinetics. ACTA CHROMATOGR 2009. [DOI: 10.1556/achrom.21.2009.3.11] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Tang D, Zhang Z, Gao Y, Wei Y, Han L. Protective effects of serum containing Ginkgo biloba extract on glomerulosclerosis in rat mesangial cells. JOURNAL OF ETHNOPHARMACOLOGY 2009; 124:26-33. [PMID: 19375492 DOI: 10.1016/j.jep.2009.04.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2008] [Revised: 04/03/2009] [Accepted: 04/07/2009] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ginkgo biloba extract (GBE) is an ancient Chinese phytomedicine which was used to treat various ailments including circulatory and demential disorders. AIM OF THE STUDY To study GBE's protective effects on the glomerulosclerosis of diabetic nephropathy (DN) in rat mesangial cells by serum pharmacological methods. MATERIALS AND METHODS The cultured mesangial cells were divided into seven groups: normal, solvent control, high glucose, low dose of GBE serum, moderate dose of GBE serum, high dose of GBE serum, and GBE. The activities of cell antioxidases, type IV collagen and laminin, Smad2/3 and Smad7, and TGF-beta(1) mRNA were measured by methods of spectrophotometry, radioimmunoassay, immunocytochemistry, and RT-PCR, respectively. RESULTS The intensity of oxidative stress decreased in the GBE serum-treated groups in comparison with the high glucose group. In addition, the expression of Smad2/3 was greatly reduced, whereas Smad7 expression increased; type IV collagen, laminin and TGF-beta(1) mRNA levels were also diminished. CONCLUSION These results suggest that GBE is protective agent against glomerulosclerosis in diabetic nephropathy of mesangial cells.
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Affiliation(s)
- Daoquan Tang
- Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, Nanjing, Jiangsu 210009, China
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van Patot MCT, Keyes LE, Leadbetter G, Hackett PH. Ginkgo bilobafor Prevention of Acute Mountain Sickness: Does It Work? High Alt Med Biol 2009; 10:33-43. [DOI: 10.1089/ham.2008.1085] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Martha C. Tissot van Patot
- Department of Anesthesiology, University of Colorado Denver, Aurora, Colorado
- Altitude Research Center, Division of Emergency Medicine, Department of Surgery, University of Colorado, Denver Colorado
| | - Linda E. Keyes
- Altitude Research Center, Division of Emergency Medicine, Department of Surgery, University of Colorado, Denver Colorado
| | - Guy Leadbetter
- Department of Exercise Physiology, Mesa State College, Grand Junction, Colorado
| | - Peter H. Hackett
- Altitude Research Center, Division of Emergency Medicine, Department of Surgery, University of Colorado, Denver Colorado
- Institute for Altitude Medicine, Telluride, Colorado
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Wu Y, Li S, Cui W, Zu X, Du J, Wang F. Ginkgo biloba extract improves coronary blood flow in healthy elderly adults: role of endothelium-dependent vasodilation. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2008; 15:164-169. [PMID: 18258419 DOI: 10.1016/j.phymed.2007.12.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2007] [Revised: 06/19/2007] [Accepted: 12/07/2007] [Indexed: 05/25/2023]
Abstract
Advancing age decreases endothelial function; accordingly, it alters the physiological regulation of coronary blood flow. Ginkgo biloba extract (GBE) has well-documented anti-ageing effects. However, little is yet known about the pharmacological actions of GBE on endothelial dysfunction and coronary blood flow in healthy elderly adults. We designed the study to test the effects of GBE on distal left anterior descending coronary artery (LAD) blood flow and endothelium-dependent brachial artery flow-mediated dilation (FMD) in healthy elderly adults. Sixty healthy elderly adults were randomly assigned to either GBE or control groups. LAD blood flow and brachial artery FMD were measured non-invasively using high-resolution ultrasound before and after intravenous administration of GBE or saline. GBE significantly increased LAD blood flow in maximal diastolic peak velocity (MDPV), maximal systolic peak velocity (MSPV) and diastolic time velocity integral (DTVI) compared with the placebo group (19.16+/-13.91% vs. 0.30+/-2.55%, 17.76+/-14.56% vs. 0.53+/-2.32%, and 21.73+/-16.13% vs. 0.81+/-2.33%, MDPV, MSPV, and DTVI improvement from baseline, respectively, p<0.01). Brachial artery FMD was also increased by 56.03% (from 7.21+/-2.52% to 11.28+/-3.95%, p<0.01). A linear correlation was found between the percentage change in MDPV, MSPV, or DTVI of LAD blood flow and the percentage change in brachial artery FMD following treatment with GBE (r=0.538, 0.366, or 0.573, respectively, p<0.01, p<0.05, or p<0.01). Our data demonstrate that GBE treatment in healthy elderly adults leads to the increase of LAD blood flow in MDPV, MSPV and DTVI, and the increased response might relate to the improved endothelium-dependent vasodilatory capacity. This study implies an important future therapeutic strategy of using GBE to counteract the detrimental effects of ageing.
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Affiliation(s)
- Yuzhou Wu
- Department of Cardiology, Second Hospital of Hebei Medical University, Shijiazhuang 050000, PR China.
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Akgül T, Ayyildiz A, Nuhoğlu B, Karagüzel E, Oğüş E, Yağmurdur H, Ustün H, Germiyanoğlu C. Ginkgo biloba (EGb 761) usage attenuates testicular injury induced by testicular ischemia/reperfusion in rats. Int Urol Nephrol 2007; 40:685-90. [PMID: 18004670 DOI: 10.1007/s11255-007-9296-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2007] [Accepted: 10/12/2007] [Indexed: 10/22/2022]
Abstract
INTRODUCTION We investigated the effect of ginkgo biloba on testicular ischemia-reperfusion (IR) injury. MATERIALS AND METHODS Thirty-two Wistar Albino rats were randomly assigned into four groups. Torsion/detorsion (T/D) performed to the rats in group 1, group 2 received ginkgo biloba (50 mg/day) for a month before T/D, group 3 received only gingko biloba (50 mg/day) for a month and group 4 was defined as sham group. After 1 month the testes were removed. RESULTS Mean testicular malondialdehyde, nitrate and nitrite levels were significantly increased in group 1 compared to groups 2, 3 and 4 (P<0.05). The rats in group 3 provided basal histological appearance. In group 1, edema, congestion and hemorrhage between seminiferous tubules were predominant. In group 2, histopathologic features were markedly less than group 1. CONCLUSIONS Malondialdehyde, nitrate and nitrite levels were increased after unilateral testicular torsion. EGb 761 has a protective effect on testicular injury induced by IR.
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Affiliation(s)
- Turgay Akgül
- Ministry of Health Ankara Training and Research Hospital, Second Urology Clinic, 11.Sokak 18/4 Bahçelievler, 06500 Ankara, Turkey.
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