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Zhao Y, Chen Y, Yan N. The Role of Natural Products in Diabetic Retinopathy. Biomedicines 2024; 12:1138. [PMID: 38927345 PMCID: PMC11200400 DOI: 10.3390/biomedicines12061138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 05/07/2024] [Accepted: 05/18/2024] [Indexed: 06/28/2024] Open
Abstract
Diabetic retinopathy (DR) is one of the most severe complications of diabetes mellitus and potentially leads to significant visual impairment and blindness. The complex mechanisms involved in the pathological changes in DR make it challenging to achieve satisfactory outcomes with existing treatments. Diets conducive to glycemic control have been shown to improve outcomes in diabetic patients, thus positioning dietary interventions as promising avenues for DR treatment. Investigations have demonstrated that natural products (NPs) may effectively manage DR. Many types of natural compounds, including saponins, phenols, terpenoids, flavonoids, saccharides, alkaloids, and vitamins, have been shown to exert anti-inflammatory, antioxidant, anti-neovascular, and antiapoptotic effects in vivo and in vitro. Nevertheless, the clinical application of NPs still faces challenges, such as suboptimal specificity, poor bioavailability, and a risk of toxicity. Prospective clinical studies are imperative to validate the therapeutic potential of NPs in delaying or preventing DR.
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Affiliation(s)
- Yuxuan Zhao
- Research Laboratory of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.Z.); (Y.C.)
- Department of Optometry and Visual Science, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yi Chen
- Research Laboratory of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.Z.); (Y.C.)
| | - Naihong Yan
- Research Laboratory of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China; (Y.Z.); (Y.C.)
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2
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Bilibio BLE, Dos Reis WR, Compagnon L, de Batista DG, Sulzbacher LM, Pinheiro JF, Ludwig MS, Frizzo MN, Cruzat V, Heck TG. Effects of alternate-day fasting and time-restricted feeding in obese middle-aged female rats. Nutrition 2023; 116:112198. [PMID: 37717500 DOI: 10.1016/j.nut.2023.112198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 08/12/2023] [Accepted: 08/13/2023] [Indexed: 09/19/2023]
Abstract
OBJECTIVES Obesity is a multifactorial condition associated with metabolic alterations that can be aggravated during female aging. Calorie restriction via intermittent fasting (IF) diets may reduce body weight and therefore have the potential to decrease obesity and associated comorbidities, such as insulin resistance. This study investigated the effects of two IF protocols, alternate-day fasting (ADF) and time-restricted feeding (TRF) in middle-aged obese female rats. METHODS Wistar rats (age 15 mo) were fed with standard chow or high-fat diet for 8 wk and then separated into the following groups (n = 5-8 each) for another 8 wk: control (received standard chow), obese (received high-fat diet), obese + ADF (24-h fasting protocol), and obese + TRF (14 h daily). RESULTS At the end of the study, both IF protocols were able to reduce body weight and body mass index compared with the obese group. However, no changes were observed in adiposity and glucose homeostasis. We also found an increase in total leukocytes, lymphocytes, and monocytes in the TRF group and a higher number of platelets in the ADF group. Blood lipid profiles, including triglycerides and high-density lipoprotein, as well as liver stress responses, such as heat shock protein 70 and malondialdehyde, were not changed by IF. CONCLUSIONS Although ADF and TRF protocols resulted in a reduction of body weight and body mass index, these dietary interventions did not promote health benefits, such as reducing blood lipid profile, adiposity, and insulin resistance. In addition, ADF and TRF increased inflammatory biomarkers, which may increase the risk of obesity-associated comorbidities.
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Affiliation(s)
- Bruna L Endl Bilibio
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Welerson R Dos Reis
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Letícia Compagnon
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Diovana G de Batista
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Mathematical and Computational Modelling, Regional University of North-western Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Lucas M Sulzbacher
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Juliana F Pinheiro
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Mirna S Ludwig
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Matias N Frizzo
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
| | - Vinicius Cruzat
- Faculty of Health, Southern Cross University, Gold Coast, Queensland, Australia.
| | - Thiago G Heck
- Research Group in Physiology, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil; Postgraduate Program in Mathematical and Computational Modelling, Regional University of North-western Rio Grande do Sul State, Ijuí, Rio Grande do Sul State, Brazil
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3
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Gao J, Tao L, Jiang Z. Alleviate oxidative stress in diabetic retinopathy: antioxidant therapeutic strategies. Redox Rep 2023; 28:2272386. [PMID: 38041593 PMCID: PMC11001280 DOI: 10.1080/13510002.2023.2272386] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2023] Open
Abstract
OBJECTIVES This review outlines the function of oxidative stress in DR and discusses therapeutic strategies to treat DR with antioxidants. METHODS Published papers on oxidative stress in DR and therapeutic strategies to treat DR with antioxidants were collected and reviewed via database searching on PubMed. RESULTS The abnormal development of DR is a complicated process. The pathogenesis of DR has been reported to involve oxidative stress, despite the fact that the mechanisms underlying this are still not fully understood. Excessive reactive oxygen species (ROS) accumulation can damage retina, eventually leading to DR. Increasing evidence have demonstrated that antioxidant therapy can alleviate the degeneration of retinal capillaries in DR. CONCLUSION Oxidative stress can play an important contributor in the pathogenesis of DR. Furthermore, animal experiments have shown that antioxidants are a beneficial therapy for treating DR, but more clinical trial data is needed.
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Affiliation(s)
- Jie Gao
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, People’s Republic of China
| | - Liming Tao
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, People’s Republic of China
| | - Zhengxuan Jiang
- Department of Ophthalmology, The Second Affiliated Hospital of Anhui Medical University, Hefei, People’s Republic of China
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Lateef Kadhim B, Abdulkareem Mohammed K. Lipoxygenase-12 Levels and Biochemical Parameters in Iraqi Patients With Type 2 Diabetes With and Without Benign Prostatic Hyperplasia. Cureus 2023; 15:e46745. [PMID: 38022061 PMCID: PMC10631570 DOI: 10.7759/cureus.46745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 10/06/2023] [Indexed: 12/01/2023] Open
Abstract
Background Diabetes mellitus (DM) is a chronic metabolic disorder characterized by hyperglycemia caused by a defect in the secretion or action or both of insulin. It has a complex pathogenesis. Benign prostatic hyperplasia (BPH) refers to an increase in the size of the prostate; it is one of the most common health problems in men that manifests with age. Lipoxygenase-12 (Lipox-12) is one of the enzymes in the Lipox 12/15 family, which plays a major role in catalyzing a variety of polyunsaturated fatty acids (PUFAs) that are capable of producing different metabolites. Lipox-12 has a significant effect on arachidonic acid metabolism, with PUFA, a pro- and anti-inflammatory mediator, as one of the enzyme isoforms. It also plays a major role in modulating inflammation at multiple checkpoints as diabetes progresses. The present study aims to measure Lipox-12 levels in patients with DM type 2 (DM2) and patients with DM2 + BPH. Methodology This study was conducted in Musayyib General Hospital, south of Baghdad, where a clinical examination was performed on 50 samples from controls (healthy subjects), 50 patients with DM2, and 50 patients with DM2 + BPH after taking each patient's history. The examinations performed included fasting blood sugar (FBS), hemoglobin A1c (HbA1c), prostate-specific antigen (PSA), triglycerides (TG), cholesterol (Chol), and Lipox-12. Results The results showed that both the DM2 and DM2 + BPH groups had higher FBS, HbA1c, TG, and Chol levels than healthy subjects; in contrast, Lipox-12 levels were the lowest in the DM2 group (sensitivity = 79% and specificity = 81%) but higher in the DM2 + BPH group (sensitivity = 80%; specificity = 82%) compared to the control group. Conclusions Lipox-12 had a high sensitivity and specificity in the DM2 and DM2 + BPH groups compared to the control group, and in both cases, it was used to monitor and diagnose DM2 and BPH.
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Affiliation(s)
- Bahaa Lateef Kadhim
- Department of Chemistry, College of Science, University of Baghdad, Baghdad, IRQ
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Zhang Q, Wu C, Liu Y, Tan X, Li C, Li L, Hu S. Chronic Inflammation Plays a Role of a Bridge Between Cardiovascular Disease and Hyperglycemia. Metab Syndr Relat Disord 2023; 21:468-474. [PMID: 37792412 DOI: 10.1089/met.2023.0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023] Open
Abstract
Background: Chronic inflammation is believed to play a key role in managing cardiovascular disease (CVD) and glycometabolism, but the specific effects remain unclear. The subclinical features of CVD events and hyperglycemia linked to inflammatory status were evaluated in this study. In addition, independent factors associated with inflammatory status were identified. Methods: Inflammatory status was measured by high-sensitivity C-reactive protein (hs-CRP), CVD events estimated by carotid intima-media thickness (cIMT), and hyperglycemia determined by glycated hemoglobin (HbA1c). Univariate analysis was performed to identify the characteristics of HbA1c-defined normoglycemia, prediabetes, and diabetes, whereas multivariate linear regression analysis was conducted to identify independent factors that correlated with hs-CRP levels. Results: Compared with HbA1c-defined normoglycemia, individuals with prediabetes and diabetes had significantly higher risks of cIMT thickening [risk ratio (RR) was 2.21 and 2.40, respectively], carotid atherosclerosis (RR was 2.29 and 3.04, respectively), and carotid plaque (RR was 2.15 and 2.63, respectively). Diabetes had higher risks of carotid atherosclerosis (RR was 1.33) and carotid plaque (RR was 1.22) than prediabetes. Increasing prevalence of cIMT thickening, atherosclerosis, and plaque was correlated with hs-CRP levels rising. There was a notable linear relationship between HbA1c and hs-CRP levels (R2 = 0.8685). In addition, both men and women showed an independent correlation of hs-CRP levels with HbA1c and low-density lipoprotein cholesterol, whereas men also had thyroid-stimulating hormone and women had age as an independent factor. Conclusions: Chronic inflammation links hyperglycemia to CVD events, and the relevant risk factors would be potential targets for alleviating inflammation and delaying the progression of the atherogenic process.
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Affiliation(s)
- Qiang Zhang
- Health Management Center, Chongqing General Hospital, Chongqing, China
| | - Chunxi Wu
- Department of Blood Transfusion, Southwest Hospital, Army Medical University, Chongqing, China
| | - Ying Liu
- Health Management Center, Chongqing General Hospital, Chongqing, China
| | - Xiaoqing Tan
- Health Management Center, Chongqing General Hospital, Chongqing, China
| | - Can Li
- Health Management Center, Chongqing General Hospital, Chongqing, China
| | - Lanlan Li
- Health Management Center, Chongqing General Hospital, Chongqing, China
| | - Shixia Hu
- Health Management Center, Chongqing General Hospital, Chongqing, China
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dos Santos JM, Zhong Q, Benite-Ribeiro SA, Heck TG. New Insights into the Role of Oxidative Stress in the Development of Diabetes Mellitus and Its Complications. J Diabetes Res 2023; 2023:9824864. [PMID: 37546353 PMCID: PMC10397502 DOI: 10.1155/2023/9824864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 06/27/2023] [Indexed: 08/08/2023] Open
Affiliation(s)
| | - Qing Zhong
- Department of Biomedical Sciences, Rocky Vista University, Ivins, USA
| | - Sandra A. Benite-Ribeiro
- Programa de Pós-graduação em Ciências Aplicadas à Saúde, Universidade Federal de Jataí, Jataí, Brazil
| | - Thiago Gomes Heck
- Postgraduate Program in Integral Health Care, Regional University of Northwestern Rio Grande do Sul State, Ijuı´, Rio Grande do Sul State, Brazil
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Wei D, Wang L, Xu Q, Wang J, Shi J, Ma C, Geng J, Zhao M, Liu X, Hou J, Huo W, Li L, Jing T, Wang C, Mao Z. Exposure to herbicides mixtures in relation to type 2 diabetes mellitus among Chinese rural population: Results from different statistical models. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 261:115109. [PMID: 37300918 DOI: 10.1016/j.ecoenv.2023.115109] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 06/01/2023] [Accepted: 06/03/2023] [Indexed: 06/12/2023]
Abstract
BACKGROUND Although it has been reported that herbicides exposure is related to adverse outcomes, available evidence on the associations of quantitatively measured herbicides with type 2 diabetes mellitus (T2DM) and prediabetes is still scant. Furthermore, the effects of herbicides mixtures on T2DM and prediabetes remain unclear among the Chinese rural population. AIMS To assess the associations of plasma herbicides with T2DM and prediabetes among the Chinese rural population. METHODS A total of 2626 participants were enrolled from the Henan Rural Cohort Study. Plasma herbicides were measured with gas chromatography coupled to triple quadrupole tandem mass spectrometry. Generalized linear regression analysis was employed to assess the associations of a single herbicide with T2DM, prediabetes, as well as indicators of glucose metabolism. In addition, the quantile g-computation and environmental risk score (ERS) structured by adaptive elastic net (AENET), and Bayesian kernel machine regression (BKMR) were used to estimate the effects of herbicides mixtures on T2DM and prediabetes. RESULTS After adjusting for covariates, positive associations of atrazine, ametryn, and oxadiazon with the increased odds of T2DM were obtained. As for prediabetes, each 1-fold increase in ln-transformed oxadiazon was related to 8.4% (95% confidence interval (CI): 1.033, 1.138) higher odds of prediabetes. In addition, several herbicides were significantly related to fasting plasma glucose, fasting insulin, and HOMA2-IR (false discovery rates adjusted P value < 0.05). Furthermore, the quantile g-computation analysis showed that one quartile increase in multiple herbicides was associated with T2DM (OR (odds ratio): 1.099, 95%CI: 1.043, 1.158), and oxadiazon was assigned the largest positive weight, followed by atrazine. In addition, the ERS calculated by the selected herbicides from AENET were found to be associated with T2DM and prediabetes, and the corresponding ORs and 95%CIs were 1.133 (1.108, 1.159) and 1.065 (1.016, 1.116), respectively. The BKMR analysis indicated a positive association between mixtures of herbicides exposure and the risk of T2DM. CONCLUSIONS Exposure to mixtures of herbicides was associated with an increased risk of T2DM among Chinese rural population, indicating that the impact of herbicides exposure on diabetes should be paid attention to and measures should be taken to avoid herbicides mixtures exposure.
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Affiliation(s)
- Dandan Wei
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Lulu Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Qingqing Xu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Juan Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jiayu Shi
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Cuicui Ma
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jintian Geng
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Mengzhen Zhao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Xiaotian Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jian Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Wenqian Huo
- Department of Occupational and Environmental Health Sciences, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Linlin Li
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Tao Jing
- School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, PR China
| | - Chongjian Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Zhenxing Mao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China.
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Hoca M, Becer E, Vatansever HS. The role of resveratrol in diabetes and obesity associated with insulin resistance. Arch Physiol Biochem 2023; 129:555-561. [PMID: 33719825 DOI: 10.1080/13813455.2021.1893338] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Diabetes mellitus is a significant health problem that is caused by chronic hyperglycaemia as a result of inadequate insulin production or ineffective insulin action in the body. In recent years, many new pharmacological and non-pharmacological therapies have been developed for improving pancreatic insulin secretion and insulin resistance. Resveratrol is a natural and biologically active stilbenoid polyphenol present in various plant species and has the potential to benefit diabetes. The anti-diabetic actions of resveratrol have also been extensively studied in diabetic human and animal models. Moreover, resveratrol might affect insulin sensitivity by regulating visceral fat derivated adipokine levels. The use of resveratrol in combination with anti-diabetic therapies or alone may have significant potential for the management of diabetes mellitus. This review provides an overview of the anti-diabetic action of resveratrol as well as the possible mechanisms that have an effect on insulin secretion and insulin resistance in diabetics.
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Affiliation(s)
- Mustafa Hoca
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Near East University, Nicosia, Cyprus
| | - Eda Becer
- Department of Biochemistry, Faculty of Pharmacy, Near East University, Nicosia, Cyprus
- DESAM Institute, Near East University, Nicosia, Cyprus
| | - Hafize Seda Vatansever
- DESAM Institute, Near East University, Nicosia, Cyprus
- Department of Histology and Embryology, Faculty of Medicine, Manisa Celal Bayar University, Manisa, Turkey
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Seibert P, Anklam CFV, Costa-Beber LC, Sulzbacher LM, Sulzbacher MM, Sangiovo AMB, dos Santos FK, Goettems-Fiorin PB, Heck TG, Frizzo MN, Ludwig MS. Increased eHSP70-to-iHSP70 ratio in prediabetic and diabetic postmenopausal women: a biomarker of cardiometabolic risk. Cell Stress Chaperones 2022; 27:523-534. [PMID: 35767179 PMCID: PMC9485348 DOI: 10.1007/s12192-022-01288-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/01/2022] [Accepted: 06/22/2022] [Indexed: 11/03/2022] Open
Abstract
Decreased estrogen levels in menopause are associated with anthropometric, metabolic, and inflammatory impairments, predisposing women to cardiometabolic risk factors such as diabetes. Menopause and type two diabetes (DM2) are marked by altered heat shock response (HSR), shown by decreased expression of the 70-kDa heat shock protein in the intracellular milieu (iHSP70). While iHSP70 plays an anti-inflammatory role, extracellular HSP70 (eHSP70) may mediate pro-inflammatory pathways and has been associated with insulin resistance in DM2. Considering the roles of these proteins according to localization, the eHSP70-to-iHSP70 ratio (H-index) has been proposed as a biomarker for HSR. We, therefore, evaluated whether this biomarker is associated with glycemic and inflammatory status in postmenopausal women. In this transversal study, 36 postmenopausal women were grouped according to fasting glycemia status as either the control group (normoglycemic, ≤ 99 mg/dL) or DM2 (prediabetic and diabetic, glycemia ≥ 100 mg/dL). DM2 group showed higher triglyceride/glucose (TyG) index and plasma atherogenic index (PAI), both of which are indicators of cardiometabolic risk. In addition, we found that the eHSP70-to-iHSP70 ratio (plasma/peripheral blood mononuclear cells-PBMC ratio) was higher in the DM2 group, compared with the control group. Furthermore, blood leukocyte and glycemia levels were positively correlated with the eHSP70-to-iHSP70 ratio in women that presented H-index values above 1.0 (a.u.). Taken together, our results highlight the eHSP70-to-iHSP70 ratio as a biomarker of altered HSR in DM2 postmenopausal women.
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Affiliation(s)
- Priscila Seibert
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Carolain Felipin Vincensi Anklam
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Lílian Corrêa Costa-Beber
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Lucas Machado Sulzbacher
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Maicon Machado Sulzbacher
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
- Post Graduate Program in Pharmacology, Federal University of Santa Maria (UFSM), Santa Maria, RS Brazil
| | - Angela Maria Blanke Sangiovo
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Fernanda Knopp dos Santos
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
| | - Pauline Brendler Goettems-Fiorin
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Thiago Gomes Heck
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
- Post Graduate Program in Mathematical and Computational Modeling (PPGMMC-UNIJUI), Ijuí, RS Brazil
| | - Matias Nunes Frizzo
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
| | - Mirna Stela Ludwig
- Research Group in Physiology, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), Ijuí, RS Brazil
- Research Group in Physiology, Post Graduate Program in Integral Attention to Health, Regional University of Northwestern Rio Grande Do Sul State (UNIJUI), RS, Rua do Comércio, 3000 – Bairro Universitário, Ijuí, 98700-000 Brazil
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Szkudelski T, Konieczna K, Szkudelska K. Regulatory Effects of Metformin, an Antidiabetic Biguanide Drug, on the Metabolism of Primary Rat Adipocytes. Molecules 2022; 27:molecules27165250. [PMID: 36014488 PMCID: PMC9415039 DOI: 10.3390/molecules27165250] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/12/2022] [Accepted: 08/13/2022] [Indexed: 11/16/2022] Open
Abstract
Metformin is a biguanide compound commonly applied in humans with type 2 diabetes. The drug affects different tissues, including fat tissue. The direct influence of metformin on cells of fat tissue, i.e., adipocytes, is poorly elucidated. In the present study, the short-term (4-h) effects of metformin on lipogenesis, glucose transport, lipolysis, and lactate release in primary rat adipocytes were explored. It was demonstrated that metformin reduced insulin-induced lipogenesis and increased glucose transport into adipocytes. The tested compound also decreased lactate release from fat cells. It was shown that metformin substantially limited lipolysis stimulated by epinephrine (adrenergic receptor agonist) and dibutyryl-cAMP (direct activator of protein kinase A). Moreover, metformin decreased the lipolytic process triggered by DPCPX (adenosine A1 receptor antagonist). In the case of each lipolytic stimulator, the drug evoked a similar inhibitory effect in the presence of 3 and 12 mM glucose. The lipolytic response of adipocytes to epinephrine was also found to be reduced by metformin when glucose was replaced by alanine. It was demonstrated that the tested compound limits the release of both glycerol and fatty acids from fat cells. The results of the present study provided evidence that metformin significantly affects the metabolism of primary rat adipocytes. Its action covers processes related to lipid accumulation and release and occurs after relatively short-term exposure.
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11
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Shafiepour M, Bamdad Z, Radman M. Prevalence of hearing loss among patients with type 2 diabetes. J Med Life 2022; 15:772-777. [PMID: 35928370 PMCID: PMC9321482 DOI: 10.25122/jml-2021-0300] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 01/05/2022] [Indexed: 11/17/2022] Open
Abstract
The auditory pathway is the main target for high levels of blood sugar. Increased glucose in diabetic patients can disrupt the auditory system physiologically and anatomically. The present study aimed to examine the prevalence of hearing loss in patients with type 2 diabetes. A total of 94 patients with type 2 diabetes, aged from 40 to 80 years, were selected randomly in the present descriptive cross-sectional study for pure tone audiometry (PTA), speech discrimination score (SDS), and speech reception threshold (SRT) tests. Accordingly, patients with a hearing threshold larger than or equal to 25 dB were considered hearing-impaired according to the PTA test. In addition, the patients' speech discrimination score was measured using a list of monosyllabic words with an intensity of 40 dB or more than the SDS test. However, in the SRT test, the patients' superficial speech comprehension threshold was measured using a list of two-syllable words. Most diabetic patients had hearing loss in both right and left ears based on the PTA and SRT tests. However, they did not have hearing loss in both ears according to the SDS test. There was no correlation between the PTA, SRT, and SDS tests and blood creatinine levels in both ears (p>0.05). Nevertheless, the right ear had a positive correlation with systolic blood pressure only in the PTA test (p<0.05). The difference between the two groups of men and women with type 2 diabetes in the hearing level in the right and left ears was not statistically significant. Hearing loss is a common deficiency in diabetic patients. In addition, it seems that diabetes is an independent risk factor for the hearing loss level.
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Affiliation(s)
| | - Zahra Bamdad
- Department of Otolaryngology, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Masoud Radman
- Department of Otolaryngology, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran,Corresponding Author: Radman Masoud, Department of Otolaryngology, Faculty of Medicine, Rafsanjan University of Medical Sciences, Rafsanjan, Iran. E-mail:
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12
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Maekawa M, Maekawa T, Sasase T, Takagi K, Takeuchi S, Kitamoto M, Nakagawa T, Toyoda K, Konishi N, Ohta T, Yamada T. Pathophysiological Analysis of Uninephrectomized db/db Mice as a Model of Severe Diabetic Kidney Disease. Physiol Res 2022; 71:209-217. [DOI: 10.33549/physiolres.934784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Diabetic nephropathy, included in diabetic kidney disease (DKD), is the primary disease leading to end-stage renal disease (ESRD) or dialysis treatment, accounting for more than 40% of all patients with ESRD or receiving dialysis. Developing new therapeutics to prevent the transition to ESRD or dialysis treatment requires an understanding of the pathophysiology of DKD and an appropriate animal model for drug efficacy studies. In this study, we investigated the pathophysiology of diabetic kidney disease with type 2 diabetes in uninephrectomized db/db mice. In addition, the nephrectomized db/db mice from 10 weeks to 42 weeks were used to assess the efficacy of long-term administration of the angiotensin-II–receptor antagonist losartan. The blood and urinary biochemical parameters and the blood pressure which is a main pharmacological endpoint of the losartan therapy, were periodically measured. And at the end, histopathological analysis was performed. Uninephrectomized db/db mice clearly developed obesity and hyperglycemia from young age. Furthermore, they showed renal pathophysiological changes, such as increased urinary albumin-creatinine ratio (UACR) (the peak value 3104±986 in 40-week-old mice), glomerular hypertrophy and increased fibrotic areas in the tubulointerstitial tubules. The blood pressure in the losartan group was significantly low compared to the normotensive Vehicle group. However, as expected, Losartan suppressed the increase in UACR (829±500) indicating the medication was sufficient, but the histopathological abnormalities including tubular interstitial fibrosis did not improve. These results suggest that the uninephrectomized db/db mice are useful as an animal model of the severe DKD indicated by the comparison of the efficacy of losartan in this model with the efficacy of losartan in clinical practice.
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Affiliation(s)
| | - T Maekawa
- Biological/Pharmacological Research Laboratories, Central Pharmaceutical Research Institute, Japan Tobacco Inc., Osaka, Japan.
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Zhang Z, Liu H, Hu X, He Y, Li L, Yang X, Wang C, Hu M, Tao S. Heat Shock Protein 70 Mediates the Protective Effect of Naringenin on High-Glucose-Induced Alterations of Endothelial Function. Int J Endocrinol 2022; 2022:7275765. [PMID: 35958293 PMCID: PMC9359828 DOI: 10.1155/2022/7275765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/02/2022] [Indexed: 11/17/2022] Open
Abstract
Endothelial dysfunction plays a pivotal role in the development and progression of diabetic vascular complications. Naringenin (Nar) is a flavanone bioactive isolated from citrus fruits known to have in vitro and in vivo antidiabetic properties. However, whether Nar affects endothelial function remains unclear in diabetes or under high-glucose (HG) condition. Using an in vitro model of hyperglycemia in human umbilical vein endothelial cells (HUVECs), we found that Nar administration markedly attenuated HG-induced alterations of endothelial function, evidenced by the mitigation of oxidative stress and inflammation, the reduction of cell adhesion molecular expressions, and the improvement of insulin resistance. We also found that HG exposure significantly reduced the levels of intracellular heat shock protein 70 (iHSP70 or iHSPA1A) and the release of HSP70 from HUVECs. HSP70 depletion mimicked and clearly diminished the protective effects of Nar on HG-induced alterations of endothelial function. In addition, Nar treatment significantly enhanced iHSP70 protein levels through a transcription-dependent manner. These results demonstrated that Nar could protect HUVECs against HG-induced alterations of endothelial function through upregulating iHSP70 protein levels. These findings are also helpful in providing new therapeutic strategies that are promising in the clinical use of Nar for the treatment of diabetes and diabetic complications.
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Affiliation(s)
- Zhihan Zhang
- Department of Orthopaedic Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Hui Liu
- Department of Orthopaedic Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xiang Hu
- Department of Orthopaedic Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Yikang He
- Tongji Medical College Huazhong University of Science and Technology, School of Nursing, Wuhan 430030, China
| | - Lu Li
- Department of Pathology and Pathophysiology, Wuhan University Taikang Medical School (School of Basic Medical Sciences), Wuhan 430071, China
| | - Xinyu Yang
- Department of Pathology and Pathophysiology, Wuhan University Taikang Medical School (School of Basic Medical Sciences), Wuhan 430071, China
| | - Changhua Wang
- Department of Pathology and Pathophysiology, Wuhan University Taikang Medical School (School of Basic Medical Sciences), Wuhan 430071, China
| | - Mingbai Hu
- Department of Breast and Thyroid Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Shengxiang Tao
- Department of Orthopaedic Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
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14
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Jiewei Y, Jingjing Z, Jingjing X, Guilan Z. Downregulation of circ-UBAP2 ameliorates oxidative stress and dysfunctions of human retinal microvascular endothelial cells (hRMECs) via miR-589-5p/EGR1 axis. Bioengineered 2021; 12:7508-7518. [PMID: 34608841 PMCID: PMC8806621 DOI: 10.1080/21655979.2021.1979440] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Hsa_circ_0001850_circ_0001850 (circ-UBAP2) is reported to be upregulated in diabetic retinopathy (DR). However, its role in high glucose (HG)-triggered oxidative stress and vascular dysfunction in DR is unclear. This study aimed to investigate the potential of circUBAP2 in DR. The content of malondialdehyde (MDA), and the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) were analyzed using the corresponding kits. Western blotting was performed to detect the protein expression of Nrf2, HO-1, and SOD-1. MTT assay was conducted to assess cell viability. A transwell migration assay was used to determine the migration ability of human retinal microvascular endothelial cells (hRMECs). A Matrigel tube formation assay was performed to analyze tube formation. The targeting relationships were verified using a luciferase reporter assay. We found that the circ-UBAP2 expression increased in DR patients and HG-treated hRMECs. Downregulation of circ-UBAP2 ameliorated HG-induced oxidative stress and dysfunction of hRMECs. Mechanistically, circ-UBAP2 sponges miR-589-5p, which is downregulated under hyperglycemic conditions. In addition, EGR1 was confirmed to be a target gene of miR-589-5p and was overexpressed in HG-treated hRMECs. In addition, EGR1 reversed the effects of miR-589-5p and induced oxidative stress and dysfunction in hRMECs. Taken together, knockdown of circ-UBAP2 relieved HG-induced oxidative stress and dysfunctions of the hRMECs through the miR-589-5p/EGR1 axis, which may offer a promising therapeutic target for DR.
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Affiliation(s)
- Yu Jiewei
- Ophthalmology Department, Jiujiang Hospital of Traditional Chinese Medicine, Jiujiang City, Jiangxi Province, China
| | - Zhou Jingjing
- Ophthalmology Department, Jiujiang Hospital of Traditional Chinese Medicine, Jiujiang City, Jiangxi Province, China
| | - Xue Jingjing
- Ophthalmology Department, Affiliated Hospital of Jiangxi University of Traditional Chinese, Nanchang City, Jiangxi Province, China
| | - Zhang Guilan
- Ophthalmology Department, The Third Clinical Medical College of China Three Gorges University, Gezhouba central hospital of sinopharm, Yichang City, Hubei Province, China
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15
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Wachal Z, Szilágyi A, Takács B, Szabó AM, Priksz D, Bombicz M, Szilvássy J, Juhász B, Szilvássy Z, Varga B. Improved Survival and Retinal Function of Aging ZDF Rats in Long-Term, Uncontrolled Diabetes by BGP-15 Treatment. Front Pharmacol 2021; 12:650207. [PMID: 33935754 PMCID: PMC8085539 DOI: 10.3389/fphar.2021.650207] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/02/2021] [Indexed: 11/13/2022] Open
Abstract
Retinal complications of diabetes often lead to deterioration or even loss of vision. This hastens discovery of pharmacological agents able to counterbalance diabetic retinopathy. BGP-15, an emerging small molecule agent, was formerly proven by our workgroup to be retinoprotective on nonobese diabetic animals, Goto-Kakizaki rats. In the present study, we aimed to examine its long-term tolerability or incidental side effects on obese-prone Zucker diabetic fatty (ZDF) rats to further increase the rationale for a future human translation. To make terminal visual status comparable with our other investigations, we also carried out electroretinography (ERG) at the end of the experiment. Our study was started on 16-week-old ZDF rats and lasted for 52 weeks, while BGP was administered daily by gavage. During the 12 months of treatment, 100% of BGP-treated animals survived compared to the non-treated ZDF group, where 60% of the animals died, which was a statistically significant difference. Based on ERG results, BGP-15 was able to counterbalance visual deterioration of ZDF rats caused by long-term diabetes. Some moderate but significant changes were seen in OGTT results and some relationship to oxidative stress by the western blot method: BGP-15 was able to increase expression of HSP70 and decrease that of NFkB in eyes of rats. These were in concert with our previous observations of SIRT1 increment and MMP9 decrement in diabetic eyes by BGP. In summary, not only is BGP-15 not harmful in the long run but it is even able to reduce the related mortality and the serious consequences of diabetes. BGP-15 is an excellent candidate for future drug development against diabetic retinopathy.
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Affiliation(s)
- Zita Wachal
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Anna Szilágyi
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Barbara Takács
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Adrienn Mónika Szabó
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Dániel Priksz
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Mariann Bombicz
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Judit Szilvássy
- Department of Oto-Rhino-Laryngology and Head and Neck Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Béla Juhász
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Zoltán Szilvássy
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
| | - Balázs Varga
- Department of Pharmacology and Pharmacotherapy, University of Debrecen, Debrecen, Hungary
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16
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Resveratrol Affects Insulin Signaling in Type 2 Diabetic Goto-Kakizaki Rats. Int J Mol Sci 2021; 22:ijms22052469. [PMID: 33671110 PMCID: PMC7957525 DOI: 10.3390/ijms22052469] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/24/2021] [Accepted: 02/25/2021] [Indexed: 12/19/2022] Open
Abstract
Resveratrol is a biologically active diphenolic compound exerting multiple beneficial effects in the organism, including anti-diabetic properties. This action is, however, not fully elucidated. In the present study, we examined effects of resveratrol on some parameters related to insulin signaling, and also on diabetes-associated dysregulation in Goto-Kakizaki (GK) rats with congenital type 2 diabetes. Resveratrol was given at the dose of 20 mg/kg b.w. for 10 weeks. It was shown that the expression and phosphorylation levels of insulin receptor in the skeletal muscle of GK rats were significantly decreased, compared with control animals. However, these changes were totally prevented by resveratrol. Liver expression of the insulin receptor was also reduced, but in this case, resveratrol was ineffective. Resveratrol was also demonstrated to significantly influence parameters of insulin binding (dissociation constant and binding capacity) in the skeletal muscle and liver. Moreover, it was shown that the expression levels of proteins related to intracellular glucose transport (GLUT4 and TUG) in adipose tissue of GK rats were significantly decreased. However, treatment with resveratrol completely abolished these changes. Resveratrol was found to induce normalization of TUG expression in the skeletal muscle. Blood levels of insulin and GIP were elevated, whereas proinsulin and GLP-1 diminished in GK rats. However, concentrations of these hormones were not affected by resveratrol. These results indicate that resveratrol partially ameliorates diabetes-associated dysregulation in GK rats. The most relevant finding covers the normalization of the insulin receptor expression in the skeletal muscle and also GLUT4 and TUG in adipose tissue.
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17
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Li J, Xie F, Zhu X, Hu H, Fang X, Huang Z, Liu Z, Wu S. Polysaccharides from the Fleshy Fruits of Camellia oleifera Attenuate the Kidney Injury in High-Fat Diet/Streptozotocin-Induced Diabetic Mice. J Med Food 2020; 23:1275-1286. [PMID: 33090944 DOI: 10.1089/jmf.2020.4717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
The fleshy fruits of Camellia oleifera Abel are the immature fruits of C. oleifera, which are infected by Exobasidium vexans Massee and then turn to be intumescent and hollowed. They contain rich trace elements and vitamin C and are eaten directly as wild fruits in the Chinese countryside. Recent studies report that C. oleifera has anti-inflammatory and antioxidative effects. The current study, for the first time, evaluates the renal protective capacity of polysaccharides from the fleshy fruits of C. oleifera (CFFP) in streptozotocin-induced diabetic mice fed high-fat diets. The diabetic mice were orally administered CFFP for 3 months to evaluate the renoprotective function of CFFP. Our results indicated that 250 mg/kg CFFP significantly alleviated diabetes-induced renal injury by decreasing serum creatine, blood urea nitrogen levels, the kidney/body weight ratio, expression of fibronectin and collagen, as well as the secretion of tumor necrosis factor-α and interleukin-6. Additionally, 250 mg/kg CFFP could significantly ameliorate renal oxidative stress through increasing glutathione levels and lowering malondialdehyde contents. We confirmed that CFFP could exert antioxidative, anti-inflammatory, and antifibrosis activities. CFFP might be a potential therapeutic agent, and the fleshy fruits of C. oleifera might be a diet therapy for diabetic patients in the future.
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Affiliation(s)
- Jialin Li
- School of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Fuhua Xie
- School of Basic Medicine, and Gannan Medical University, Ganzhou, China
| | - Xiuzhi Zhu
- School of Basic Medicine, and Gannan Medical University, Ganzhou, China
| | - Haibo Hu
- School of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Xiansong Fang
- The First Affiliated Hospital, Gannan Medical University, Ganzhou, China
| | - Zhiwei Huang
- School of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Zhiping Liu
- School of Basic Medicine, and Gannan Medical University, Ganzhou, China
| | - Suzhen Wu
- School of Basic Medicine, and Gannan Medical University, Ganzhou, China
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18
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Mensch A, Zierz S. Cellular Stress in the Pathogenesis of Muscular Disorders-From Cause to Consequence. Int J Mol Sci 2020; 21:ijms21165830. [PMID: 32823799 PMCID: PMC7461575 DOI: 10.3390/ijms21165830] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/07/2020] [Accepted: 08/11/2020] [Indexed: 02/07/2023] Open
Abstract
Cellular stress has been considered a relevant pathogenetic factor in a variety of human diseases. Due to its primary functions by means of contractility, metabolism, and protein synthesis, the muscle cell is faced with continuous changes of cellular homeostasis that require rapid and coordinated adaptive mechanisms. Hence, a prone susceptibility to cellular stress in muscle is immanent. However, studies focusing on the cellular stress response in muscular disorders are limited. While in recent years there have been emerging indications regarding a relevant role of cellular stress in the pathophysiology of several muscular disorders, the underlying mechanisms are to a great extent incompletely understood. This review aimed to summarize the available evidence regarding a deregulation of the cellular stress response in individual muscle diseases. Potential mechanisms, as well as involved pathways are critically discussed, and respective disease models are addressed. Furthermore, relevant therapeutic approaches that aim to abrogate defects of cellular stress response in muscular disorders are outlined.
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Tikhaze AK, Kosach VY, Lankin VZ, Panferova AA, Smirnova MD. [Indicator Characterizing Carbonyl-Dependent Modification of Erythrocytic Superoxydismutase as a Biochemical Marker of Oxidative Stress in Coronary Heart Disease]. ACTA ACUST UNITED AC 2020; 60:1019. [PMID: 32515705 DOI: 10.18087/cardio.2020.5.n1019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 02/19/2020] [Accepted: 03/23/2020] [Indexed: 11/18/2022]
Abstract
Aim To study the oxidative modification of red blood cell Cu,Zn superoxide dismutase (SOD) in patients with ischemic heart disease (IHD) in vivo and in vitro to substantiate the use of a new oxidative stress marker.Material and methods Red blood cell Cu,Zn SOD was measured by depression of nitrotetrazolium blue reduction by the superoxide anion generated in xanthine oxidase xanthine oxidation. Red blood cell Cu,Zn SOD was measured immunochemically. The biochemical study was performed in the control group (patients with low extremity fracture without known history of cardiovascular diseases and hyperlipidemia) and in groups of patients with acute myocardial infarction, stable angina, and decompensated heart failure. For evaluation of oxidative stress intensity in IHD patients, an empirical SOD oxidative modification coefficient (OMCSOD) was proposed, which is a Cu,Zn SOD activity / Cu,Zn SOD content ratio.Results The red blood cell Cu,Zn SOD activity was significantly decreased in all IHD groups compared to the control group. Furthermore, OMCSOD was also considerably decreased in IHD patients, which warrants the use of this biochemical index as an oxidative stress marker.Conclusion It was shown that the Cu,Zn SOD modification was induced by interaction of the enzyme molecules with a natural dicarbonyl, malonic dialdehyde, and OMCSOD can be used for evaluation of oxidative stress intensity in IHD patients.
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Affiliation(s)
- A K Tikhaze
- National Medical Research Center of Cardiology, Moscow, Russia
| | - V Ya Kosach
- V. V. Veresaev Municipal Clinical Hospital, Moscow, Russia
| | - V Z Lankin
- National Medical Research Center of Cardiology, Moscow, Russia
| | - A A Panferova
- National Medical Research Center of Cardiology, Moscow, Russia
| | - M D Smirnova
- National Medical Research Center of Cardiology, Moscow, Russia
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20
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Szkudelska K, Okulicz M, Hertig I, Szkudelski T. Resveratrol ameliorates inflammatory and oxidative stress in type 2 diabetic Goto-Kakizaki rats. Biomed Pharmacother 2020; 125:110026. [PMID: 32092822 DOI: 10.1016/j.biopha.2020.110026] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/13/2020] [Accepted: 02/13/2020] [Indexed: 02/06/2023] Open
Abstract
Type 2 diabetes is associated with inflammatory and oxidative stress. Resveratrol, a naturally occurring diphenolic compound, was shown to improve glycemic control and alleviate metabolic disturbances in Goto-Kakizaki (GK) rats, a non-obese model of type 2 diabetes. However, in GK rats effects of resveratrol addressing inflammatory and oxidative stress were not explored. The present study aimed to determine anti-inflammatory and anti-oxidative properties of resveratrol in these rats. GK and Sprague-Dawley (SD) rats were divided into 4 groups: GK control, GK treated with resveratrol, SD control and SD treated with resveratrol. Resveratrol (20 mg/kg b.w.) was given once a day for 10 weeks. It was shown that contents of inflammatory markers, interleukin 6 (IL-6), interleukin 1 β (IL-1β), tumor necrosis factor α (TNF-α) and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), were increased in the skeletal muscle of diabetic rats, but these effects were prevented by resveratrol therapy. Similarly, amounts of IL-1β and TNF-α were elevated in livers of GK rats; however, this rise was alleviated in resveratrol-treated animals. Moreover, the contents of inflammation-related factors (IL-6, IL-1β, TNF-α and NF-κB) were augmented in adipose tissue of GK rats; nevertheless, in this tissue resveratrol was ineffective. Resveratrol reduced also lipid peroxidation in the skeletal muscle, reduced activities of glutathione peroxidase in blood serum and catalase in the livers of GK rats. Our new findings show that resveratrol therapy results in relieving inflammatory and oxidative stress in GK rats, which may be largely associated with the alleviation of metabolic disturbances in this model of diabetes. Nevertheless, it was demonstrated that the efficacy of resveratrol action is tissue-specific.
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Affiliation(s)
- Katarzyna Szkudelska
- Department of Animal Physiology and Biochemistry, Poznan University of Life Sciences Wolynska 35, 60-637 Poznan, Poland.
| | - Monika Okulicz
- Department of Animal Physiology and Biochemistry, Poznan University of Life Sciences Wolynska 35, 60-637 Poznan, Poland
| | - Iwona Hertig
- Department of Animal Physiology and Biochemistry, Poznan University of Life Sciences Wolynska 35, 60-637 Poznan, Poland
| | - Tomasz Szkudelski
- Department of Animal Physiology and Biochemistry, Poznan University of Life Sciences Wolynska 35, 60-637 Poznan, Poland
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21
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Tao Q, Miao Y, Li H, Yuan X, Huang X, Wang Y, Andreassen OA, Fan X, Yang Y, Song X. Insulin Resistance and Oxidative Stress: In Relation to Cognitive Function and Psychopathology in Drug-Naïve, First-Episode Drug-Free Schizophrenia. Front Psychiatry 2020; 11:537280. [PMID: 33329081 PMCID: PMC7732418 DOI: 10.3389/fpsyt.2020.537280] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Accepted: 10/26/2020] [Indexed: 12/17/2022] Open
Abstract
Objective: The present study aimed to examine whether insulin resistance and oxidative stress are associated with cognitive impairment in first-episode drug-free schizophrenia (SZ) patients. Methods: Ninety first-episode SZ patients and 70 healthy controls were enrolled. Fasting insulin (FINS) and markers of oxidative stress [oxidized glutathione (GSSG), superoxide dismutase (SOD), nitric oxide (NO) and uric acid (UA) levels] were measured in serum before pharmacological treatment was initiated. Psychiatric symptoms and cognitive function were assessed with the Positive and Negative Syndrome Scale (PANSS) and MATRICS Consensus Cognitive Battery (MCCB), respectively. In addition, the homeostatic model assessment of insulin resistance (HOMA-IR) was also studied. Results: HOMA-IR and serum levels of GSSG and NO were significantly higher in SZ patients than in healthy controls (P < 0.001), while the serum levels of SOD were significantly lower than in healthy controls (P < 0.001). HOMA-IR, GSSG and NO levels were significantly correlated to the total cognitive function scores of the patient group (r = -0.345,-0.369,-0.444, respectively, P < 0.05). But these factors were not co-related to the cognitive functions in the healthy control group. And, levels of SOD, UA were not associated with the total cognitive function scores in both the patient and the healthy control groups. NO was positively correlated with general pathological and the total score in the PANSS, and was negatively correlated with six cognitive domains (r = -0.316 to -0.553, P < 0.05). Conclusions: The levels of insulin resistance and oxidative stress are elevated, and correlated with the severity of cognitive impairment in drug-naïve, first-episode SZ patients. Treatment approaches targeting on reducing insulin resistance and oxidative stress may improve cognitive function in SZ patients.
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Affiliation(s)
- Qi Tao
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Biological Psychiatry International Joint Laboratory of Henan/Zhengzhou University, Zhengzhou, China.,Henan Psychiatric Transformation Research Key Laboratory/Zhengzhou University, Zhengzhou, China.,Academy of Medical Sciences/Zhengzhou University, Zhengzhou, China
| | - Yu Miao
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Biological Psychiatry International Joint Laboratory of Henan/Zhengzhou University, Zhengzhou, China.,Henan Psychiatric Transformation Research Key Laboratory/Zhengzhou University, Zhengzhou, China
| | - Huihui Li
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Biological Psychiatry International Joint Laboratory of Henan/Zhengzhou University, Zhengzhou, China.,Henan Psychiatric Transformation Research Key Laboratory/Zhengzhou University, Zhengzhou, China
| | - Xiuxia Yuan
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Biological Psychiatry International Joint Laboratory of Henan/Zhengzhou University, Zhengzhou, China.,Henan Psychiatric Transformation Research Key Laboratory/Zhengzhou University, Zhengzhou, China
| | - Xufeng Huang
- Illawarra Health and Medical Research Institute and University of Wollongong, Wollongong, NSW, Australia
| | - Yunpeng Wang
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Lifespan Changes in Brain and Cognition (LCBC), Department of Psychology, University of Oslo, Oslo, Norway
| | - Ole A Andreassen
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Norwegian Center for Mental Disorders Research (NORMENT), Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Xiaoduo Fan
- Psychotic Disorders Program, UMass Memorial Medical Center, University of Massachusetts Medical School, Worcester, MA, United States
| | - Yongfeng Yang
- Henan Mental Hospital, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, China.,Henan Key Lab of Biological Psychiatry of Xinxiang Medical University, Xinxiang, China.,International Joint Research Laboratory for Psychiatry and Neuroscience of Henan, Xinxiang, China
| | - Xueqin Song
- Department of Psychiatry, The First Affiliated Hospital, Zhengzhou University, Zhengzhou, China.,Biological Psychiatry International Joint Laboratory of Henan/Zhengzhou University, Zhengzhou, China.,Henan Psychiatric Transformation Research Key Laboratory/Zhengzhou University, Zhengzhou, China
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