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Nna VU, Abu Bakar AB, Ahmad A, Eleazu CO, Mohamed M. Oxidative Stress, NF-κB-Mediated Inflammation and Apoptosis in the Testes of Streptozotocin-Induced Diabetic Rats: Combined Protective Effects of Malaysian Propolis and Metformin. Antioxidants (Basel) 2019; 8:antiox8100465. [PMID: 31600920 PMCID: PMC6826571 DOI: 10.3390/antiox8100465] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/05/2019] [Accepted: 10/08/2019] [Indexed: 02/07/2023] Open
Abstract
Oxidative stress, inflammation and apoptosis are major complications that trigger organ failure in diabetes mellitus (DM), and are proven to adversely affect the male reproductive system. Clinical and experimental studies have demonstrated the promising protective effects of propolis in DM and its associated systemic effects. Herein, we investigated the effect of Malaysian propolis (MP) on testicular oxidative stress, inflammation and apoptosis in diabetic rats. Further, the possibility of a complementary effect of MP with the anti-hyperglycaemic agent, metformin (Met), was studied with the idea of recommending its use in the event that Met alone is unable to contain the negative effects of DM on the male reproductive system in mind. Male Sprague-Dawley rats were either gavaged distilled water (normoglycaemic control and diabetic control groups), MP (diabetic rats on MP), Met (diabetic rats on Met) or MP+Met (diabetic rats on MP+Met), for 4 weeks. MP decreased oxidative stress by up-regulating (p < 0.05) testicular mRNA levels of nuclear factor erythroid 2-related factor 2, superoxide dismutase, catalase and glutathione peroxidase; increasing (p < 0.05) the activities of antioxidant enzymes; and decreasing (p < 0.05) lipid peroxidation in the testes and epididymis of diabetic rats. Further, MP down-regulated (p < 0.05) testicular mRNA and protein levels of pro-inflammatory mediators (nuclear factor kappa B, inducible nitric oxide synthase, tumour necrosis factor-α and interleukin (IL)-1β), decreased (p < 0.05) the nitric oxide level, and increased (p < 0.05) IL-10 mRNA and protein levels. MP also down-regulated (p < 0.05) Bax/Bcl-2, p53, casapase-8, caspase-9 and caspase-3 genes, and increased (p < 0.05) testicular germ cell proliferation. MP's effects were comparable to Met. However, the best results were achieved following co-administration of MP and Met. Therefore, we concluded that administration of the MP+Met combination better attenuates testicular oxidative stress, inflammation and apoptosis in DM, relative to MP or Met monotherapy, and may improve the fertility of males with DM.
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Affiliation(s)
- Victor Udo Nna
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
- Department of Physiology, Faculty of Basic Medical Sciences, College of Medical Sciences, University of Calabar, Calabar P.M.B. 1115, Cross River State, Nigeria.
| | - Ainul Bahiyah Abu Bakar
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
| | - Azlina Ahmad
- Basic Science and Oral Biology Unit, School of Dental Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
| | - Chinedum Ogbonnaya Eleazu
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
- Department of Chemistry/Biochemistry/Molecular Biology, Federal University Ndufu Alaike Ikwo, Abakiliki P.M.B. 10, Ebonyi State, Nigeria.
| | - Mahaneem Mohamed
- Department of Physiology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
- Unit of Integrative Medicine, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian 16150, Kelantan, Malaysia.
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The Effect of Iranian Propolis on Glucose Metabolism, Lipid Profile, Insulin Resistance, Renal Function and Inflammatory Biomarkers in Patients with Type 2 Diabetes Mellitus: A Randomized Double-Blind Clinical Trial. Sci Rep 2019; 9:7289. [PMID: 31086222 PMCID: PMC6514000 DOI: 10.1038/s41598-019-43838-8] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 05/02/2019] [Indexed: 12/17/2022] Open
Abstract
Propolis is a natural product with many biological properties including hypoglycemic activity and modulating lipid profile. The present study was designed to evaluate the effect of Iranian propolis extract on glucose metabolism, Lipid profile, Insulin resistance, renal and liver function as well as inflammatory biomarkers in patients with type 2 diabetes mellitus (T2DM). A double-blind, placebo-controlled clinical trial was conducted. The duration of the study lasted 90 days. Patients with T2DM were recruited and randomly divided into an Iranian propolis group (1000 mg/day) (n = 50) and a placebo group (n = 44). There was a significant decrease in the serum levels of glycosylated hemoglobin (HbA1c), 2-hour post prandial (2hpp), insulin, homeostasis model assessment-insulin resistance (HOMA-IR), homeostasis model assessment of β-cell function (HOMA-β), High sensitive C-reactive protein (hs-CRP), tumor necrosis factor-α (TNF-α). However, there was a notable elevation in the serum HDL-C in the propolis group compared with the placebo group. In addition, a notable reduction in serum liver transaminase (ALT and AST) and blood urea nitrogen (BUN) concentrations in the propolis group was observed. Iranian propolis has beneficial effects on reducing post prandial blood glucose, serum insulin, insulin resistance, and inflammatory cytokines. It is also a useful treatment for preventing the liver and renal dysfunction, as well as, elevating HDL-C concentrations in patients with T2DM.
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Karimian J, Hadi A, Pourmasoumi M, Najafgholizadeh A, Ghavami A. The efficacy of propolis on markers of glycemic control in adults with type 2 diabetes mellitus: A systematic review and meta‐analysis. Phytother Res 2019; 33:1616-1626. [DOI: 10.1002/ptr.6356] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 03/08/2019] [Accepted: 03/10/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Jahangir Karimian
- Department of General Courses, School of Management and Medical Information SciencesIsfahan University of Medical Sciences Isfahan Iran
| | - Amir Hadi
- Halal Research Center of IRI, FDA Tehran Iran
| | - Makan Pourmasoumi
- Gastrointestinal and Liver Diseases Research CenterGuilan University of Medical Sciences Rasht Iran
| | | | - Abed Ghavami
- Department of Nutrition, School of NutritionTabriz University of Medical Sciences Tabriz Iran
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Afsharpour F, Javadi M, Hashemipour S, Koushan Y, Haghighian HK. Propolis supplementation improves glycemic and antioxidant status in patients with type 2 diabetes: A randomized, double-blind, placebo-controlled study. Complement Ther Med 2019; 43:283-288. [PMID: 30935545 DOI: 10.1016/j.ctim.2019.03.001] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/27/2019] [Accepted: 03/01/2019] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES The prevalence of type 2 diabetes has risen dramatically in recent years. There are many different safe therapies used for diabetes and also number of natural supplements that can be used to manage diabetes. We assessed the effect of oral propolis supplementation on blood glucose, insulin resistance and antioxidant status in type 2 diabetes. METHODS We conducted a randomized, double-blinded, placebo-controlled trial for 8-week. Sixty two patients with type 2 diabetes (30-55 years of age) were randomly assigned in two group, propolis (n = 31) and placebo (n = 31). Patients were given doses of 500 mg, three times a day (1500 mg), of propolis or placebo three time a day. The fasting blood sugar (FBS), two-hour postprandial glucose (2-hp), insulin, insulin resistance (IR), hemoglobin A1c (HbA1c), total antioxidant capacity (TAC) and activity of glutathione peroxidase (GPx) and superoxide dismutase (SOD) were measured at the beginning and end of the study. Statistical analysis was performed using SPSS software. RESULTS After two month, FBS, 2-hp, insulin, IR, HbA1c was significantly decreased in patients treated with propolis compared with placebo group (p < 0.05). Additionally intake of propolis significantly increased the blood levels of TAC and activity of GPx and SOD (p < 0.05). CONCLUSION Propolis treatment can be helpful as a diet supplement in patients with type 2 diabetes through improvement in glycemic status, reduction in insulin resistance and amelioration in antioxidant status. This supplement without side effects can increase the effectiveness of prescribing drugs in diabetes.
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Affiliation(s)
- Fatemeh Afsharpour
- Department of Nutrition, School of Health, Qazvin University of Medical Science, Qazvin, Iran; Metabolic Diseases Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Maryam Javadi
- Department of Nutrition, School of Health, Qazvin University of Medical Science, Qazvin, Iran; Children Growth Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Sima Hashemipour
- Metabolic Diseases Research Center, Qazvin University of Medical Sciences, Qazvin, Iran
| | - Yaghob Koushan
- Medical Plant Research Center of Islamic Azad University of Tabriz, Researcher in Traditional Medicine, Tabriz, Iran
| | - Hossein Khadem Haghighian
- Department of Nutrition, School of Health, Qazvin University of Medical Science, Qazvin, Iran; Metabolic Diseases Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
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Aoi W, Zou X, Xiao JB, Marunaka Y. Body Fluid pH Balance in Metabolic Health and Possible Benefits of Dietary Alkaline Foods. EFOOD 2019. [DOI: 10.2991/efood.k.190924.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Cao H, Ou J, Chen L, Zhang Y, Szkudelski T, Delmas D, Daglia M, Xiao J. Dietary polyphenols and type 2 diabetes: Human Study and Clinical Trial. Crit Rev Food Sci Nutr 2018; 59:3371-3379. [PMID: 29993262 DOI: 10.1080/10408398.2018.1492900] [Citation(s) in RCA: 187] [Impact Index Per Article: 31.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Hui Cao
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Taipa, Macau
| | - Juanying Ou
- School of Biological Sciences, the University of Hong Kong, Hong Kong, China
| | - Lei Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Yanbo Zhang
- School Chinese Medicine, the University of Hong Kong, Hong Kong, China
| | - Tomasz Szkudelski
- Department of Animal Physiology and Biochemistry, Poznan University of Life Sciences, Poznan, Poland
| | - Dominique Delmas
- INSERM U866 Research Center, Université de Bourgogne, Dijon, France
| | - Maria Daglia
- Department of Drug Sciences, Medicinal Chemistry and Pharmaceutical Technology Section, University of Pavia, Pavia, Italy
| | - Jianbo Xiao
- Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau, Taipa, Macau
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Zhuo JC, Cai DK, Xie KF, Gan HN, Li SS, Huang XJ, Huang D, Zhang CZ, Li RY, Chen YX, Zeng XH. Mechanism of YLTZ on glycolipid metabolism based on UPLC/TOF/MS metabolomics. J Chromatogr B Analyt Technol Biomed Life Sci 2018; 1097-1098:128-141. [PMID: 30241074 DOI: 10.1016/j.jchromb.2018.08.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 12/21/2022]
Abstract
Type 2 diabetes mellitus (T2DM) is a metabolic disease characterized by dysfunction of glycolipid metabolism. YLTZ is used to treat hyperlipidemia, yet its hypolipidemic and hypoglycemic mechanism on T2DM are unknown. Thus, UPLC/TOF/MS was applied in this study to identify the potential bio-markers, and deduce the possible metabolic pathways. According to bio-indexes, the increased blood lipid levels, including TC, TG, LDL and FA, and the decreased HDL, the elevated glucose, reduced insulin level and impaired OGTT were observed in diabetic rat model. While YLTZ can decrease the lipid levels and glucose content, as well as increased insulin standards and improve OGTT. After data from UPLC/TOF/MS processed, 17 metabolites were obtained, including phospholipids (LPCs, PCs and PGP (18:1)), beta-oxidation production (HAA, VAG and CNE) and precursors (THA), bile acid (CA, CDCA and IDCA), hydrolysate of TG (MG (22:4)), glycometabolism (G6P), cholesterol-driven synthetics (ADO) and production of arachidonate acid (THETA). As a result, YLTZ was able to reduce LPCs, PCs, PGP (18:1), HAA, VAG, CNE, CA, ADO and THETA, as well as enhance MG (22:4) and G6P. After analyzing results, several metabolic pathways were deduced, which containing, cholesterol synthesis and elimination, FA beta-oxidation, TG hydrolysis, phospholipids synthesis, glycolysis, gluconeogenesis and inflammation. Consequently, YLTZ performed to prohibit the FA beta-oxidation, synthesis of cholesterol and phospholipids, gluconeogenesis and inflammation level, as well as promote TG hydrolysis, glycolysis and blood circulation. Hence, applying metabonomics in TCM research can uncover its pharmacological edges, elucidating comprehensively that YLTZ has capacity of hypolipidemic, hypoglycemic and promoting blood circulation, matching the effect of removing blood stasis, eliminating phlegm and dampness.
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Affiliation(s)
- Jun-Cheng Zhuo
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Da-Ke Cai
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Kai-Feng Xie
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Hai-Ning Gan
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Sha-Sha Li
- Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Xue-Jun Huang
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Dane Huang
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Cheng-Zhe Zhang
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Ru-Yue Li
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China; Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China
| | - Yu-Xing Chen
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China.
| | - Xiao-Hui Zeng
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China; Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou, Guangdong 510095, China.
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Gao W, Pu L, Wei J, Yao Z, Wang Y, Shi T, Zhao L, Jiao C, Guo C. Serum Antioxidant Parameters are Significantly Increased in Patients with Type 2 Diabetes Mellitus after Consumption of Chinese Propolis: A Randomized Controlled Trial Based on Fasting Serum Glucose Level. Diabetes Ther 2018; 9:101-111. [PMID: 29214374 PMCID: PMC5801227 DOI: 10.1007/s13300-017-0341-9] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Indexed: 02/07/2023] Open
Abstract
INTRODUCTION Propolis is a natural product with many biological activities. The present study was designed to evaluate the effects of Chinese propolis on glucose metabolism, antioxidant function, and inflammatory cytokines in patients with type 2 diabetes mellitus (T2DM). METHODS In the 18-week study, recruited T2DM patients were randomly divided into a Chinese propolis group (900 mg/day) (n = 31) and a control group (n = 30) according to fasting serum glucose levels at baseline. RESULTS At the end of the study, no significant difference was found between the groups in serum glucose, glycosylated hemoglobin, insulin, aldose reductase, or adiponectin. However, serum GSH, flavonoids, and polyphenols were significantly increased, and serum lactate dehydrogenase activity was significantly reduced in the Chinese propolis group. Meanwhile, serum IL-6 was significantly increased in the Chinese propolis group. CONCLUSION Chinese propolis is effective at improving antioxidant function in T2DM patients, partly by increasing serum antioxidant parameters.
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Affiliation(s)
- Weina Gao
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Lingling Pu
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China.
| | - Jingyu Wei
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Zhanxin Yao
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Yawen Wang
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Tala Shi
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Liting Zhao
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China
| | - Changya Jiao
- Nutrition and Health Research Center, By-Health Ltd, Guangzhou, People's Republic of China
| | - Changjiang Guo
- Department of Nutrition, Tianjin Institute of Health and Environmental Medicine, Tianjin, People's Republic of China.
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Yang L, Ling W, Du Z, Chen Y, Li D, Deng S, Liu Z, Yang L. Effects of Anthocyanins on Cardiometabolic Health: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Adv Nutr 2017; 8:684-693. [PMID: 28916569 PMCID: PMC5593100 DOI: 10.3945/an.116.014852] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Numerous clinical trials have examined the role of anthocyanins on cardiometabolic health, but their effects have not been quantitatively synthesized and systematically evaluated. The aim of our study was to conduct a systematic review and meta-analysis of randomized controlled trials (RCTs) assessing the effects of anthocyanins on glycemic regulation and lipid profiles in both healthy populations and those with cardiometabolic diseases. The MEDLINE, EMBASE, Cochrane database, OVID EBM Reviews, and clinicaltrials.gov databases were searched until February 2017. RCTs with a duration of ≥2 wk that evaluated the effects of anthocyanins on glycemic control, insulin sensitivity, and lipids as either primary or secondary outcomes were included. The Cochrane Risk of Bias tool was used to assess the study quality. Standardized mean differences (SMDs) were determined by random-effects models. Meta-regression, sensitivity, and subgroup analyses were performed to explore the influence of covariates on the overall effects. Thirty-two RCTs (1491 participants) were eligible for meta-analysis. Anthocyanins significantly reduced fasting glucose (SMD: -0.31; 95% CI: -0.59, -0.04; I2 = 80.7%), 2-h postprandial glucose (SMD: -0.82; 95% CI: -1.49, -0.15; I2 = 77.7), glycated hemoglobin (SMD: -0.65; 95% CI: -1.00, -0.29; I2 = 72.7%), total cholesterol (SMD: -0.33; 95% CI: -0.62, -0.03; I2 = 86.9%), and LDL (SMD: -0.35; 95% CI: -0.66, -0.05; I2 = 85.2%). Sensitivity analyses showed that the overall effects remained similar by excluding the trials with a high or unclear risk of bias. The significant improvements in glycemic control and lipids support the benefits of anthocyanins in the prevention and management of cardiometabolic disease. Further well-designed RCTs are needed to evaluate the long-term effects of anthocyanins on metabolic profiles and to explore the optimal formula and dosage. The protocol for this review was registered at https://www.crd.york.ac.uk/PROSPERO/#index.php as CRD42016033210.
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Affiliation(s)
- LiPing Yang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition and
| | - WenHua Ling
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition and
| | - ZhiCheng Du
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yet-Sen University, Guangzhou, China
| | - YuMing Chen
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yet-Sen University, Guangzhou, China
| | - Dan Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition and
| | - ShiZhou Deng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition and
| | - ZhaoMin Liu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition and
| | - LiLi Yang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition and
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Samadi N, Mozaffari-Khosravi H, Rahmanian M, Askarishahi M. Effects of bee propolis supplementation on glycemic control, lipid profile and insulin resistance indices in patients with type 2 diabetes: a randomized, double-blind clinical trial. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2017; 15:124-134. [PMID: 28285617 DOI: 10.1016/s2095-4964(17)60315-7] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Propolis, a natural resinous substance made by bees from material extracted from plants, flowers and bee's wax, has shown great therapeutic effects and been widely used in food and drug industries. Recently, some researchers have studied the effect of this substance in the treatment of diabetes. OBJECTIVE The purpose of this trial was to determine the effect of bee propolis on glycemic control, serum lipid profile and insulin resistance indices in patients with type 2 diabetes (T2D). DESIGN, SETTING, PARTICIPANTS AND INTERVENTIONS This randomized clinical trial involved 66 patients with T2D, which were randomly divided into two groups of intervention (IG) and placebo (PG). IG received 300 mg three times a day for a total of 900 mg/d of propolis pills, while PG received similar pills, lacking propolis, on the same schedule for 12 weeks. MAIN OUTCOME MEASURES Fasting blood glucose (FBG), hemoglobin A1c (HbA1c), total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG), serum insulin and insulin resistance indices were the main outcome measures. RESULTS The mean change in FBG between the IG ((17.76 ± 27.72) mg/dL decrease) and the PG ((6.48 ± 42.77) mg/dL increase) was significantly different (P = 0.01). Change in mean HbA1c had a similar pattern to FBG. The mean change in TC between the IG ((5.16 ± 43.80) mg/dL increase) and the PG ((28.9 ± 27.4) mg/dL increase) was also significantly different (P = 0.01), showing the protective role of propolis against the increase in TC. The change in mean LDL was similar to mean TC. There was no significant difference in other lipids or insulin resistance indices between the two groups. CONCLUSION Based on this study, the daily intake of 900 mg of bee propolis supplement for 12 weeks results in improvement of glycemic and some serum lipid levels in patients with T2D. TRIAL REGISTRATION This study is registered on the website of Iranian Ministry of Health (www.irct.ir) with proprietary code of IRCT2014080218659N1.
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Affiliation(s)
- Nazli Samadi
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hassan Mozaffari-Khosravi
- Department of Nutrition, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Yazd Diabetic Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Masoud Rahmanian
- Yazd Diabetic Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Internal Medicine, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohsen Askarishahi
- Department of Biostatistics and Epidemiology, Faculty of Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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The Role of Propolis in Oxidative Stress and Lipid Metabolism: A Randomized Controlled Trial. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4272940. [PMID: 28539963 PMCID: PMC5429932 DOI: 10.1155/2017/4272940] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Accepted: 11/14/2016] [Indexed: 12/20/2022]
Abstract
Although there is evidence of the benefits of propolis on human health, the vast majority of studies have been conducted using animal models. The present study includes the chemical characterization and clinical evaluation of the effects of the oral administration of propolis solution on the oxidative status and modulation of lipids in a human population in Talca, Chile. Chemical characterization of propolis, total phenol, flavonoids, and total antioxidant capacity were determined by ORAC. Identification of phenols and flavonoids in propolis was assessed by HPLC-DAD. A double-blind, placebo-controlled clinical trial was conducted. Subjects provided informed consent form and the Bioethics Committee of the Universidad de Talca approved protocol. Eligible subjects (n = 67) were randomized in two groups: propolis (n = 35) and placebo (n = 32). All subjects were evaluated at 0 (baseline), 45, and 90 days. In the propolis group, we observed that increases in HDL-c went from 53.9 ± 11.9 to 65.8 ± 16.7 mg/dL (p < 0.001) from baseline to 90 days. Compared to placebo subjects, consumption of propolis induced a net increase in GSH levels (p < 0.0001) and a decrease (p < 0.001) in TBARS levels for the propolis group. Our findings indicate potential benefits of propolis use in human health. The use of propolis appears to have positive effects on oxidative status and improvement of HDL-c, both of which contribute to a reduced risk of cardiovascular disease.
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Yu Y, Zheng G. Troxerutin protects against diabetic cardiomyopathy through NF‑κB/AKT/IRS1 in a rat model of type 2 diabetes. Mol Med Rep 2017; 15:3473-3478. [PMID: 28440404 PMCID: PMC5436284 DOI: 10.3892/mmr.2017.6456] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Accepted: 12/09/2016] [Indexed: 12/13/2022] Open
Abstract
Troxerutin is a bioflavonoid, which can be used to treat venous disorders, thrombosis and cerebrovascular diseases. Recent studies have demonstrated that it may also be used to prevent edemas. However, it is not known whether troxerutin protects against the cardiomyopathic complications of diabetes. In the present study, a rat model of type 2 diabetes was used to investigate the potential for troxerutin to protect against diabetic cardiomyopathy, through changes to nuclear factor‑κB (NF‑κB) expression. Troxerutin administration significantly reduced heart rate, blood pressure, blood glucose and plasma triglyceride levels across all measured time points. Furthermore, troxerutin significantly reduced reactive oxygen species levels, NF‑κB protein expression, and suppressed the phosphorylated forms of AKT, insulin receptor substrate 1 (IRS1) and c‑Jun N‑terminal kinase (JNK). These results suggested that troxerutin protects against cardiomyopathy via alterations in NF‑κB, AKT and IRS1 signaling, in a rat model of type 2 diabetes.
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Affiliation(s)
- Yongzhi Yu
- Department of Cardiology, Linzi District People's Hospital, Zibo, Shandong 255400, P.R. China
| | - Guanzhong Zheng
- Department of Cardiology, Linzi District People's Hospital, Zibo, Shandong 255400, P.R. China
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Ohkura N, Oishi K, Kihara-Negishi F, Atsumi GI, Tatefuji T. Effects of a diet containing Brazilian propolis on lipopolysaccharide-induced increases in plasma plasminogen activator inhibitor-1 levels in mice. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2016; 5:439-443. [PMID: 27757277 PMCID: PMC5061490 DOI: 10.5455/jice.20160814112735] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Accepted: 07/23/2016] [Indexed: 01/11/2023]
Abstract
BACKGROUND Brazilian propolis has many biological activities including the ability to help prevent thrombotic diseases, but this particular effect has not been proven. Plasma levels of plasminogen activator inhibitor-1 (PAI-1), an inhibitor of fibrinolysis, increase under inflammatory conditions such as infection, obesity and atherosclerosis and such elevated levels predispose individuals to a risk of developing thrombotic diseases. AIM This study aimed to determine the effects of a diet containing Brazilian propolis on lipopolysaccharide (LPS)-induced increases in plasma PAI-1 levels. MATERIALS AND METHODS Mice were fed with a diet containing 0.5% (w/w) Brazilian propolis for 8 weeks. Thereafter, the mice were subcutaneously injected with saline containing 0.015 mg/kg of LPS and sacrificed 4 h later. RESULTS Orally administered Brazilian propolis significantly suppressed the LPS-induced increase in PAI-1 antigen and its activity in mouse plasma. CONCLUSION This study indicated that Brazilian propolis contains natural products that can decrease thrombotic tendencies in mice.
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Affiliation(s)
- Naoki Ohkura
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University, Tokyo, Itabashi, Japan
| | - Katsutaka Oishi
- Biological Clock Research Group, Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology, Japan
| | - Fumiko Kihara-Negishi
- Department of Life and Health Science, School of Pharma-Sciences, Teikyo University, Tokyo, Itabashi, Japan
| | - Gen-Ichi Atsumi
- Department of Molecular Physiology and Pathology, School of Pharma-Sciences, Teikyo University, Tokyo, Itabashi, Japan
| | - Tomoki Tatefuji
- Institute for Bee Products and Health Science, Yamada Apiculture Center, Kagamino, Okayama, Japan
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Brazilian Green Propolis Improves Antioxidant Function in Patients with Type 2 Diabetes Mellitus. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13050498. [PMID: 27187435 PMCID: PMC4881123 DOI: 10.3390/ijerph13050498] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 04/27/2016] [Accepted: 05/09/2016] [Indexed: 01/08/2023]
Abstract
Propolis contains a variety of bioactive components and possesses many biological properties. This study was designed to evaluate potential effects of Brazilian green propolis on glucose metabolism and antioxidant function in patients with type 2 diabetes mellitus (T2DM). In the 18-week randomized controlled study, enrolled patients with T2DM were randomly assigned to Brazilian green propolis group (900 mg/day) (n = 32) and control group (n = 33). At the end of the study, no significant difference was found in serum glucose, glycosylated hemoglobin, insulin, aldose reductase or adiponectin between the two groups. However, serum GSH and total polyphenols were significantly increased, and serum carbonyls and lactate dehydrogenase activity were significantly reduced in the Brazilian green propolis group. Serum TNF-α was significantly decreased, whereas serum IL-1β and IL-6 were significantly increased in the Brazilian green propolis group. It is concluded that Brazilian green propolis is effective in improving antioxidant function in T2DM patients.
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