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Pan Y, Meng H, Guo L, Kong B, Shuai W, Huang H. Examination of nonlinear associations between pulse pressure index and incident prediabetes susceptibility: a 5-year retrospective cohort investigation. Sci Rep 2024; 14:17948. [PMID: 39095555 PMCID: PMC11297041 DOI: 10.1038/s41598-024-68813-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024] Open
Abstract
Prediabetes and related complications constitute significant public health burdens globally. As an indicator closely associated with abnormal glucose metabolism and atherosclerosis, the utility of Pulse Pressure Index (PPI) as a prediabetes risk marker has not been explored. We performed a retrospective cohort analysis to investigate this putative association between PPI and prediabetes hazard. Our analysis encompassed 183,517 Chinese adults ≥ 20 years registered within the Rich Healthcare Group 2010-2016. PPI was defined as (systolic blood pressure - diastolic blood pressure)/systolic blood pressure. The relationship between PPI and prediabetes risk was assessed via Cox proportional hazards regression modeling. Non-linearity evaluations applied cubic spline fitting approaches alongside smooth curve analysis. Inflection points of PPI concerning prediabetes hazard were determined using two-piecewise Cox models. During a median follow-up of 3 years (2.17-3.96 years), new-onset prediabetes was documented in 20,607 patients (11.23%). Multivariate regression analysis showed that PPI was an independent risk factor for prediabetes, and the risk of prediabetes increased by 0.6% for every 1% increase in PPI (Hazard Ratio [HR]: 1.006, 95% Confidence Interval [CI] 1.004-1.008, P < 0.001). This association was non-significant for PPI ≤ 37.41% yet exhibited a sharp upsurge when PPI surpassed 37.41% (HR: 1.013, 95% CI 1.005-1.021, P = 0.0029). Our analysis unveils a positive, non-linear association between PPI and future prediabetes risk. Within defined PPI ranges, this relationship is negligible but dramatically elevates beyond identified thresholds.
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Affiliation(s)
- Yucheng Pan
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, Hubei, People's Republic of China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China
| | - Hong Meng
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, Hubei, People's Republic of China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China
| | - Liang Guo
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, Hubei, People's Republic of China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China
| | - Bin Kong
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, People's Republic of China
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, Hubei, People's Republic of China
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China
| | - Wei Shuai
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, People's Republic of China.
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, Hubei, People's Republic of China.
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China.
| | - He Huang
- Department of Cardiology, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei, People's Republic of China.
- Hubei Key Laboratory of Cardiology, Wuhan, 430060, Hubei, People's Republic of China.
- Cardiovascular Research Institute of Wuhan University, Wuhan, 430060, Hubei, People's Republic of China.
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2
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Takegami M, Ushigome E, Hata S, Yoshimura T, Kitagawa N, Hasegawa G, Tanaka T, Ohnishi M, Tsunoda S, Yokota I, Ushigome H, Asano M, Hamaguchi M, Yamazaki M, Fukui M. Home-measured pulse pressure is a predictor of cardiovascular disease in type 2 diabetes: The KAMOGAWA-HBP study. Nutr Metab Cardiovasc Dis 2022; 32:2330-2337. [PMID: 36100493 DOI: 10.1016/j.numecd.2022.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 10/15/2022]
Abstract
BACKGROUND AND AIMS Pulse pressure (PP) is a prognostic predictor of cardiovascular mortality. This retrospective cohort study aimed to investigate the association between home PP measurements and cardiovascular disease in patients with type 2 diabetes. METHODS AND RESULTS Home blood pressure was measured for 14 consecutive days in 1082 patients with type 2 diabetes, and pulse pressure was calculated. A 10 mmHg increase in morning PP was associated with a 1.30-fold increase in the risk of cardiovascular disease. The risk of cardiovascular disease was 1.88 times higher in the morning in the higher PP group than in the lower PP group. In the receiver operating characteristic analysis, the areas under the curve (95% confidence interval) corresponding to the PP (morning, evening, and clinic) for new-onset cardiovascular disease were 0.63 (0.58-0.69), 0.62 (0.57-0.67), and 0.59 (0.54-0.64), respectively. The area under the curve for PP measured in the morning was significantly greater than that for PP measured in the clinic (P = 0.032). CONCLUSION Home-measured PP is a better predictor of new-onset cardiovascular disease than clinic-measured PP, in patients with type 2 diabetes.
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Affiliation(s)
- Maya Takegami
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Emi Ushigome
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan.
| | - Shinnosuke Hata
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Takashi Yoshimura
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Nobuko Kitagawa
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Goji Hasegawa
- Department of Endocrinology and Metabolism, Kyoto Second Red Cross Hospital, Kyoto, Japan
| | - Toru Tanaka
- Department of Endocrinology and Metabolism, Kyoto First Red Cross Hospital, Kyoto, Japan
| | - Masayoshi Ohnishi
- Department of Endocrinology and Metabolism, Osaka General Hospital of West Japan Railway Company, Osaka, Japan
| | - Sei Tsunoda
- Department of Cardiology, Nishijin Hospital, Kyoto, Japan
| | - Isao Yokota
- Department of Biostatistics, Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Hidetaka Ushigome
- Department of Organ Transplantation and General Surgery, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Mai Asano
- Department of Endocrinology and Metabolism, Kyoto First Red Cross Hospital, Kyoto, Japan
| | - Masahide Hamaguchi
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
| | - Masahiro Yamazaki
- Department of Endocrinology and Metabolism, Kyoto Second Red Cross Hospital, Kyoto, Japan
| | - Michiaki Fukui
- Department of Endocrinology and Metabolism, Kyoto Prefectural University of Medicine, Graduate School of Medical Science, Kyoto, Japan
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Nutraceutical Prevention of Diabetic Complications—Focus on Dicarbonyl and Oxidative Stress. Curr Issues Mol Biol 2022; 44:4314-4338. [PMID: 36135209 PMCID: PMC9498143 DOI: 10.3390/cimb44090297] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/25/2022] [Accepted: 09/16/2022] [Indexed: 11/16/2022] Open
Abstract
Oxidative and dicarbonyl stress, driven by excess accumulation of glycolytic intermediates in cells that are highly permeable to glucose in the absence of effective insulin activity, appear to be the chief mediators of the complications of diabetes. The most pathogenically significant dicarbonyl stress reflects spontaneous dephosphorylation of glycolytic triose phosphates, giving rise to highly reactive methylglyoxal. This compound can be converted to harmless lactate by the sequential activity of glyoxalase I and II, employing glutathione as a catalyst. The transcription of glyoxalase I, rate-limiting for this process, is promoted by Nrf2, which can be activated by nutraceutical phase 2 inducers such as lipoic acid and sulforaphane. In cells exposed to hyperglycemia, glycine somehow up-regulates Nrf2 activity. Zinc can likewise promote glyoxalase I transcription, via activation of the metal-responsive transcription factor (MTF) that binds to the glyoxalase promoter. Induction of glyoxalase I and metallothionein may explain the protective impact of zinc in rodent models of diabetic complications. With respect to the contribution of oxidative stress to diabetic complications, promoters of mitophagy and mitochondrial biogenesis, UCP2 inducers, inhibitors of NAPDH oxidase, recouplers of eNOS, glutathione precursors, membrane oxidant scavengers, Nrf2 activators, and correction of diabetic thiamine deficiency should help to quell this.
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4
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Matsumoto KI, Nakanishi I, Zhelev Z, Bakalova R, Aoki I. Nitroxyl Radical as a Theranostic Contrast Agent in Magnetic Resonance Redox Imaging. Antioxid Redox Signal 2022; 36:95-121. [PMID: 34148403 PMCID: PMC8792502 DOI: 10.1089/ars.2021.0110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance:In vivo assessment of paramagnetic and diamagnetic conversions of nitroxyl radicals based on cyclic redox mechanism can be an index of tissue redox status. The redox mechanism of nitroxyl radicals, which enables their use as a normal tissue-selective radioprotector, is seen as being attractive on planning radiation therapy. Recent Advances:In vivo redox imaging using nitroxyl radicals as redox-sensitive contrast agents has been developed to assess tissue redox status. Chemical and biological behaviors depending on chemical structures of nitroxyl radical compounds have been understood in detail. Polymer types of nitroxyl radical contrast agents and/or nitroxyl radical-labeled drugs were designed for approaching theranostics. Critical Issues: Nitroxyl radicals as magnetic resonance imaging (MRI) contrast agents have several advantages compared with those used in electron paramagnetic resonance (EPR) imaging, while support by EPR spectroscopy is important to understand information from MRI. Redox-sensitive paramagnetic contrast agents having a medicinal benefit, that is, nitroxyl-labeled drug, have been developed and proposed. Future Directions: A development of suitable nitroxyl contrast agent for translational theranostic applications with high reaction specificity and low normal tissue toxicity is under progress. Nitroxyl radicals as redox-sensitive magnetic resonance contrast agents can be a useful tool to detect an abnormal tissue redox status such as disordered oxidative stress. Antioxid. Redox Signal. 36, 95-121.
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Affiliation(s)
- Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Group, Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Ikuo Nakanishi
- Quantum RedOx Chemistry Group, Institute for Quantum Life Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Zhivko Zhelev
- Medical Faculty, Trakia University, Stara Zagora, Bulgaria.,Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Rumiana Bakalova
- Functional and Molecular Imaging Goup, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Ichio Aoki
- Functional and Molecular Imaging Goup, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
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5
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The Association between Plasma Concentration of Phytoestrogens and Hypertension within the Korean Multicenter Cancer Cohort. Nutrients 2021; 13:nu13124366. [PMID: 34959918 PMCID: PMC8703377 DOI: 10.3390/nu13124366] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/26/2021] [Accepted: 12/03/2021] [Indexed: 12/12/2022] Open
Abstract
In order to examine the association between plasma phytoestrogen concentration (genistein, daidzein, equol and enterolactone) and hypertension, we conducted a nested case–control study for 229 hypertension cases including 112 prehypertension and 159 healthy controls derived from the Korean Multi-center Cancer Cohort (KMCC). The concentration of plasma phytoestrogens was measured using time-resolved fluoroimmunoassay. We assessed the association between plasma phytoestrogens and hypertension using logistic regression models using odds ratio (OR) and 95% confidence interval (95%CI). The highest tertile of plasma equol and enterolactone concentration exhibited a significantly decreased risk of hypertension (equol, OR = 0.34, 95%CI 0.20–0.57; enterolactone, OR = 0.32, 95%CI 0.18–0.57), compared with the lowest tertile. Equol and enterolactone showed reduced ORs for prehypertension (the highest tertile relative to the lowest tertile, OR = 0.50, 95%CI 0.26–0.96; OR = 0.38, 95%CI 0.19–0.75, respectively) and hypertension (OR = 0.42, 95%CI 0.22–0.81; OR = 0.28, 95%CI 0.14–0.54, respectively). There was a stronger association in hypertension (the highest tertile relative to the lowest tertile in obesity vs. non-obesity; equol, OR = 0.06 vs. 0.63; enterolactone, OR = 0.07 vs. 0.46; both p-heterogeneity < 0.01). This study suggests that equol and enterolactone may contribute to prevent primarily prehypertension and hypertension, and control cardiovascular disease (CVD) based on the continuum of hypertension and CVD. Further study to assess hypertension risk based on useful biomarkers, including phytoestrogens, may contribute to primary prevention of hypertension.
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Banerjee A, Mukherjee S, Maji BK. Monosodium glutamate causes hepato-cardiac derangement in male rats. Hum Exp Toxicol 2021; 40:S359-S369. [PMID: 34560825 DOI: 10.1177/09603271211049550] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
People in the fast-food era rely on pre-packaged foods and engage in limited physical activity, which leads to a shift in eating patterns. Monosodium glutamate (MSG), a dietary ingredient used in this sort of cuisine, has been found to be hazardous to both experimental animals and humans. The objective of this study was to explore at the unnecessary changes caused by consuming MSG in secret and exceeding the recommended dosage. Hence, we decided to evaluate the impact of MSG by using three different doses (200, 400, and 600 mg/kg body weight orally) for 28 days in rats. We uncovered that all three MSG dosages result in a rise in body weight, dyslipidemia, inflammatory response, and hepato-cardiac marker enzymes, all of which imply hepatic and cardiac toxicity. Furthermore, changes in redox status suggest oxidative stress, which was higher in all three MSG dosages although not as much as in the MSG-600 group when compared to control. Such effects eventually manifested themselves in tissue architecture of the liver and heart, resulting in severe hepato-cardiac derangement, but the degree of tissue damage was greater in the MSG-600 group. As a result, it is possible that MSG has a negative influence on the liver and heart. However, the MSG-600 group showed a substantial effect, indicating that MSG should not be used in food preparation. Therefore, the findings of the study may aid in the formulation of health-care strategies and serve as a warning to the general public regarding the use of MSG in daily diet.
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Affiliation(s)
- Arnab Banerjee
- Department of Physiology (UG & PG), Serampore College, West Bengal, India
| | - Sandip Mukherjee
- Department of Physiology (UG & PG), Serampore College, West Bengal, India
| | - Bithin Kumar Maji
- Department of Physiology (UG & PG), Serampore College, West Bengal, India
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7
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Li H, Xu W, Liu X, Wang T, Wang S, Liu J, Jiang H. JAK2 deficiency improves erectile function in diabetic mice through attenuation of oxidative stress, apoptosis, and fibrosis. Andrology 2021; 9:1662-1671. [PMID: 34085398 PMCID: PMC8672361 DOI: 10.1111/andr.13061] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/11/2021] [Accepted: 05/31/2021] [Indexed: 12/13/2022]
Abstract
Background Janus kinase 2 (JAK2) is activated in diabetic mellitus (DM) conditions and may enhance oxidative stress, apoptosis and fibrosis in many tissues. Whether JAK2 activation is involved in the occurrence of diabetic erectile dysfunction (ED) is unknown. Objectives We performed this study to investigate the effect of JAK2 deficiency on diabetic ED. Materials and methods Conditional JAK2 gene knockout mice (Cre+/+‐JAK2fl/fl) were used, in which JAK2 gene knockout could be induced by tamoxifen. Mice fell into four groups: control, JAK2 knockout (JAK2−/−), DM, and DM with JAK2−/−. DM was induced by intraperitoneal injection of streptozotocin. Two months later, JAK2 gene knockout was induced with tamoxifen in Cre+/+‐JAK2fl/fl mice. After another 2 months, erectile function was measured by electrical stimulation of the cavernous nerve, and penile tissues were harvested. Ratio of maximal intracavernosal pressure (MIP) to mean arterial blood pressure (MAP), expression and phosphorylation of JAK2, oxidative stress level, NO/Cyclic Guanosine Monophosphate (cGMP) pathway, apoptosis, fibrosis, and transforming growth factor beta 1 (TGF‐β1)/Smad/Collagen IV pathway in corpus cavernosum, were measured. Results JAK2 expression was remarkably decreased after induction with tamoxifen. JAK2 was activated in penile tissues of diabetic mice, and JAK2 deficiency could improve the impaired erectile function caused by DM. However, in mice without DM, JAK2 deficiency had no apparent influence on erectile function. Levels of oxidative stress, apoptosis, fibrosis, and TGF‐β1/Smad/Collagen IV pathway were all elevated by DM, whereas JAK2 deficiency lessened these alterations in diabetic mice. Moreover, JAK2 deficiency improved the expression of the down‐regulated NO/cGMP pathway in diabetic mice. In non‐diabetic mice, no apparent changes were found in aforementioned parameters after JAK2 gene knockout. Discussion and conclusion Our study showed that JAK2 deficiency could improve erectile function in diabetic mice, which might be mediated by reduction in oxidative stress, apoptosis, and fibrosis in corpus cavernosum.
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Affiliation(s)
- Hao Li
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Wenchao Xu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaming Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Tao Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shaogang Wang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jihong Liu
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongyang Jiang
- Department of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute of Urology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Yu C, Chen S, Wang X, Wu G, Zhang Y, Fu C, Hu C, Liu Z, Luo X, Wang J, Chen L. Exposure to maternal diabetes induces endothelial dysfunction and hypertension in adult male rat offspring. Microvasc Res 2021; 133:104076. [PMID: 32956647 DOI: 10.1016/j.mvr.2020.104076] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 09/15/2020] [Accepted: 09/16/2020] [Indexed: 01/10/2023]
Abstract
The adverse environment in early life can modulate adult phenotype, including blood pressure. Our previous study shows, in a rat streptozotocin (STZ)-induced maternal diabetes model, fetal exposure to maternal diabetes is characterized by established hypertension in the offspring. However, the exact mechanisms are not known. Our present study found, as compared with male control mother offspring (CMO), male diabetic mother offspring (DMO) had higher blood pressure with arterial dysfunction, i.e., decreased acetylcholine (Ach)-induced vasodilation. But there is no difference in blood pressure between female CMO and DMO. The decreased Ach-induced vasodilation was related to decreased nitric oxide (NO) production in the endothelium, not NO sensitivity in vascular smooth muscle because sodium nitroprusside (SNP)-mediated vasodilation was preserved; there was decreased NO production and lower eNOS phosphorylation in male DMO. The reactive oxygen species (ROS) level was increased in male DMO than CMO; normalized ROS levels with tempol increased NO production, normalized Ach-mediated vasodilation, and lowered blood pressure in male DMO rats. It indicates that diabetic programming hypertension is related to arterial dysfunction; normalizing ROS might be a potential strategy for the prevention of hypertension in the offspring.
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MESH Headings
- Age Factors
- Animals
- Arterial Pressure
- Blood Glucose/metabolism
- Cyclic GMP/metabolism
- Diabetes Mellitus, Experimental/blood
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/physiopathology
- Diabetes, Gestational/blood
- Diabetes, Gestational/physiopathology
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/physiopathology
- Female
- Hypertension/etiology
- Hypertension/metabolism
- Hypertension/physiopathology
- Male
- Mesenteric Artery, Superior/metabolism
- Mesenteric Artery, Superior/physiopathology
- Nitric Oxide/metabolism
- Oxidative Stress
- Pregnancy
- Prenatal Exposure Delayed Effects
- Rats, Sprague-Dawley
- Reactive Oxygen Species/metabolism
- Sex Factors
- Vasodilation
- Rats
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Affiliation(s)
- Cheng Yu
- Department of Cardiology, Fujian Heart Center, Provincial Institute of Coronary Disease, Fujian Medical University Union Hospital, Fuzhou, Fujian, China; Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Shuo Chen
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Xinquan Wang
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Gengze Wu
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Ye Zhang
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Chunjiang Fu
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Cuimei Hu
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Zhengbi Liu
- Center of Laboratory Animal, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Xiaoli Luo
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China
| | - Jialiang Wang
- Department of Cardiology, Daping Hospital, Third Military Medical University; Chongqing Institute of Cardiology, Chongqing, China.
| | - Lianglong Chen
- Department of Cardiology, Fujian Heart Center, Provincial Institute of Coronary Disease, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
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Banerjee A, Das D, Paul R, Roy S, Bhattacharjee A, Prasad SK, Banerjee O, Mukherjee S, Maji BK. Altered composition of high-lipid diet may generate reactive oxygen species by disturbing the balance of antioxidant and free radicals. J Basic Clin Physiol Pharmacol 2020; 31:/j/jbcpp.ahead-of-print/jbcpp-2019-0141/jbcpp-2019-0141.xml. [PMID: 32229664 DOI: 10.1515/jbcpp-2019-0141] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Accepted: 01/21/2020] [Indexed: 12/13/2022]
Abstract
Background In the present era, obesity is increasing rapidly, and high dietary intake of lipid could be a noteworthy risk factor for the occasion of obesity, as well as nonalcoholic fatty liver disease, which is the independent risk factor for type 2 diabetes and cardiovascular disease. For a long time, high-lipid diet (HLD) in "fast food" is turning into part of our everyday life. So, we were interested in fulfilling the paucity of studies by means of preliminary evaluation of these three alternative doses of HLD on a rat model and elucidating the possible mechanism of these effects and divulging the most alarming dose. Methods Thirty-two rats were taken, and of these, 24 were fed with HLD in three distinctive compositions of edible coconut oil and vanaspati ghee in a ratio of 2:3, 3:2 and 1:1 (n = 8), orally through gavage at a dose of 10 mL/kg body weight for a period of 28 days, whereas the other eight were selected to comprise the control group. Results After completion of the experiment, followed by analysis of data it was revealed that hyperlipidemia with increased liver and cardiac marker enzymes, are associated with hepatocellular injury and cardiac damage. The data also supported increased proinflammatory cytokines such as interleukin 6 (IL-6) and tumor necrosis factor α (TNF-α). As oxidative stress parameter increased in both liver and heart, there is also an increased in TNF-α due to an increased expression of inducible nitric oxide (NO) synthase, which led to a high production of NO. Moreover, HLD treatment explicitly weakens reasonability of hepatocytes and cardiomyocytes conceivably through G0/G1 or S stage capture or perhaps by means of enlistment of sub-G0/G1 DNA fragmentation and a sign of apoptosis. Conclusions Based on the outcomes, it tends to be inferred that consequences of the present examination uncovered HLD in combination of 2:3 applies most encouraging systemic damage by reactive oxygen species generation and hyperlipidemia and necroapoptosis of the liver and heart. Hence, outcome of this study may help to formulate health care strategy and warns about the food habit in universal population regarding the use of hydrogenated and saturated fats (vanaspati ghee) in diet.
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Affiliation(s)
- Arnab Banerjee
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Debasmita Das
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Rajarshi Paul
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Sandipan Roy
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Ankita Bhattacharjee
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Shilpi Kumari Prasad
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Oly Banerjee
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Sandip Mukherjee
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India
| | - Bithin Kumar Maji
- Department of Physiology (UG and PG), Serampore College, 9 William Carey Road, Serampore, Hooghly-712201, West Bengal, India, Phone: +91-9433509890
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10
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Roberts HM, Grant MM, Hubber N, Super P, Singhal R, Chapple ILC. Impact of Bariatric Surgical Intervention on Peripheral Blood Neutrophil (PBN) Function in Obesity. Obes Surg 2019; 28:1611-1621. [PMID: 29238916 PMCID: PMC5973997 DOI: 10.1007/s11695-017-3063-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aim The aim of this study was to investigate the impact of weight loss following gastric band surgery on multiple measures of peripheral blood neutrophil (PBN) function. Material and Methods Twenty-three obese patients undergoing gastric band surgery were recruited to a longitudinal intervention study, alongside non-obese, healthy gender- and age-matched controls. Eighteen pairs of patients and controls completed all stages of the study. PBNs were isolated by density centrifugation and a comprehensive analysis of PBN function was undertaken at various stages of the patients’ bariatric surgical care pathway. Results Obese patients exhibited exaggerated PBN activity in response to various stimuli, characterised by higher reactive oxygen species (ROS) generation (n = 18, p < 0.001) and release of pro-inflammatory cytokines (n = 10, p < 0.05) and lower PBN extracellular trap (NET) formation (n = 18, p < 0.01). PBN chemotactic accuracy was also impaired prior to surgery (n = 18, p < 0.01). Weight loss was associated with normalised NET production and lower ROS production and cytokine release relative to healthy controls. However, chemotactic accuracy remained impaired in patients. Conclusions Weight loss following gastric band surgery was associated with a decrease in the pro-inflammatory activities of peripheral blood neutrophils (PBNs). A hyper-inflammatory PBN phenotype, involving excess ROS and cytokine release, reduced NET formation and chemotaxis, may lead to a reduced ability to eliminate infection, alongside inflammation-mediated tissue damage in obese individuals. Electronic supplementary material The online version of this article (10.1007/s11695-017-3063-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Helen M Roberts
- Periodontal Research Group, School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Dental Hospital (Birmingham Community Healthcare Trust), 5 Mill Pool Way, Edgbaston, Birmingham, B5 7ET, UK
| | - Melissa M Grant
- Periodontal Research Group, School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Dental Hospital (Birmingham Community Healthcare Trust), 5 Mill Pool Way, Edgbaston, Birmingham, B5 7ET, UK.
| | - Naomi Hubber
- Periodontal Research Group, School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Dental Hospital (Birmingham Community Healthcare Trust), 5 Mill Pool Way, Edgbaston, Birmingham, B5 7ET, UK
| | - Paul Super
- Birmingham Heartlands Hospital, Bordesley Green East, B9 5SS, Birmingham, UK
| | - Rishi Singhal
- Birmingham Heartlands Hospital, Bordesley Green East, B9 5SS, Birmingham, UK
| | - Iain L C Chapple
- Periodontal Research Group, School of Dentistry, Institute of Clinical Science, University of Birmingham and Birmingham Dental Hospital (Birmingham Community Healthcare Trust), 5 Mill Pool Way, Edgbaston, Birmingham, B5 7ET, UK
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11
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Mercader J, Sabater AG, Le Gonidec S, Decaunes P, Chaplin A, Gómez-Zorita S, Milagro FI, Carpéné C. Oral Phenelzine Treatment Mitigates Metabolic Disturbances in Mice Fed a High-Fat Diet. J Pharmacol Exp Ther 2019; 371:555-566. [PMID: 31270215 DOI: 10.1124/jpet.119.259895] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Accepted: 07/01/2019] [Indexed: 12/15/2022] Open
Abstract
Novel mechanisms and health benefits have been recently suggested for the antidepressant drug phenelzine (PHE), known as a nonselective monoamine oxidase inhibitor. They include an antilipogenic action that could have an impact on excessive fat accumulation and obesity-related metabolic alterations. We evaluated the metabolic effects of an oral PHE treatment on mice fed a high-fat diet (HFD). Eleven-week-old male C57BL/6 mice were fed a HFD and either a 0.028% PHE solution (HFD + PHE) or water to drink for 11 weeks. PHE attenuated the increase in body weight and adiposity without affecting food consumption. Energy efficiency was lower in HFD + PHE mice. Lipid content was reduced in subcutaneous fat pads, liver, and skeletal muscle. In white adipose tissue (WAT), PHE reduced sterol regulatory element-binding protein-1c and phosphoenolpyruvate carboxykinase mRNA levels, inhibited amine-induced lipogenesis, and did not increase lipolysis. Moreover, HFD + PHE mice presented diminished levels of hydrogen peroxide release in subcutaneous WAT and reduced expression of leukocyte transmigration markers and proinflammatory cytokines in visceral WAT and liver. PHE reduced the circulating levels of glycerol, triacylglycerols, high-density lipoprotein cholesterol, and insulin. Insulin resistance was reduced, without affecting glucose levels and glucose tolerance. In contrast, PHE increased rectal temperature and slightly increased energy expenditure. The mitigation of HFD-induced metabolic disturbances points toward a promising role for PHE in obesity treatment and encourages further research on its mechanisms of action. SIGNIFICANCE STATEMENT: Phenelzine reduces body fat, markers of oxidative stress, inflammation, and insulin resistance in high-fat diet mice. Semicarbazide-sensitive amine oxidase, monoamine oxidase, phosphoenolpyruvate carboxykinase, and sterol regulatory element-binding protein-1c are involved in the metabolic effects of phenelzine. Phenelzine could be potentially used for the treatment of obesity-related complications.
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Affiliation(s)
- Josep Mercader
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Agustín G Sabater
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Sophie Le Gonidec
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Pauline Decaunes
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Alice Chaplin
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Saioa Gómez-Zorita
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Fermín I Milagro
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
| | - Christian Carpéné
- Balearic Islands Health Research Institute, Palma de Mallorca, Spain (J.M.); Department of Fundamental Biology and Health Sciences, University of Balearic Islands (UIB), Palma de Mallorca, Spain (J.M.); Alimentómica, S.L., Spin-off from UIB, Palma de Mallorca, Spain (A.G.S.); Institute of Metabolic and Cardiovascular Diseases, INSERM, UMR1048, Teams 1 & 3, Toulouse, France (C.C., S.L.G., P.D.); I2MC, University of Toulouse, UMR1048, Paul Sabatier University, Toulouse Cedex 4, France (C.C., S.L.G., P.D.); Cardiovascular Research Institute, School of Medicine, Case Western Reserve University, Cleveland, Ohio (A.C.); Nutrition and Obesity Group, Department of Nutrition and Food Science, University of the Basque Country and Lucio Lascaray Research Institute, Vitoria, Spain (S.G.-Z.); CIBERobn Physiopathology of Obesity and Nutrition, Institute of Health Carlos III, Madrid, Spain (S.G.-Z., F.I.M.); Department of Nutrition, Food Science, and Physiology, University of Navarra, Pamplona, Spain (F.I.M.); and Centre for Nutrition Research, University of Navarra, Pamplona, Spain (F.I.M.)
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12
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Liu S, Adewole D, Yu L, Sid V, Wang B, O K, Yang C. Rutin attenuates inflammatory responses induced by lipopolysaccharide in an in vitro mouse muscle cell (C2C12) model. Poult Sci 2019; 98:2756-2764. [DOI: 10.3382/ps/pez037] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 01/22/2019] [Indexed: 01/19/2023] Open
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13
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Lv H, Zhu C, Wu R, Ni H, Lian J, Xu Y, Xia Y, Shi G, Li Z, Caldwell RB, Caldwell RW, Yao L, Chen Y. Chronic mild stress induced anxiety-like behaviors can Be attenuated by inhibition of NOX2-derived oxidative stress. J Psychiatr Res 2019; 114:55-66. [PMID: 31039481 DOI: 10.1016/j.jpsychires.2019.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 04/08/2019] [Accepted: 04/11/2019] [Indexed: 12/14/2022]
Abstract
Chronic stress-induced anxiety disorder is a highly-prevalent, modern social disease in which oxidative stress plays an important role. It is necessary to determine the underlying mechanisms governing this disorder to establish an effective treatment target for anxiety disorders. In this study, we examined the behavioral changes in mice subjected to chronic mild stress (CMS). We found that CMS exposure leads to anxiety-like phenotypes and increased levels of oxidative stress in the ventral hippocampus of mice. Furthermore, CMS increased the excitatory synaptic transmission of pyramidal cells in the ventral CA1 (vCA1). Administration of 4-hydroxy-3-methoxy-acetophenone (apocynin), an inhibitor of the nicotinamide adenine dinucleotide phosphate (NADPH) oxidases, clearly ameliorated the changes induced by CMS exposure. In addition, our results of behavioral tests and analyses of reactive oxygen species (ROS) using NOX2-deficient mice indicate that CMS-induced enhanced oxidative stress level is primarily caused by the increased expression of NOX2. NOX2-derived oxidative stress can serve as a target for anxiety therapy led by chronic stress.
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Affiliation(s)
- Hang Lv
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Chuan'an Zhu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Ruolin Wu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Hui Ni
- The Research Center of Basic Integrative Medicine, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Jiating Lian
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yunlong Xu
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Yucen Xia
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Guoqi Shi
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Zhixing Li
- Department of Soft Tissue Traumatology, Fourth Affiliated Hospital of Guangzhou University of Chinese Medicine, Shenzhen, 518033, China
| | - Ruth B Caldwell
- Vascular Biology Centre, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Robert William Caldwell
- Department of Pharmacology & Toxicology, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Lin Yao
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Yongjun Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China; Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, 510515, China.
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14
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Lei XW, Li Q, Zhang JZ, Zhang YM, Liu Y, Yang KH. The Protective Roles of Folic Acid in Preventing Diabetic Retinopathy Are Potentially Associated with Suppressions on Angiogenesis, Inflammation, and Oxidative Stress. Ophthalmic Res 2019; 62:80-92. [PMID: 31018207 DOI: 10.1159/000499020] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 02/20/2019] [Indexed: 11/19/2022]
Abstract
This study aimed to evaluate the therapeutic effect of folic acid (FA) on diabetic retinopathy (DR) in a genetic mouse model of obese type 2 diabetes mellitus (T2D). C57BL/KsJ-db/db (db/db) T2D mice were divided into control, FA, metformin (MET), and FA plus MET groups (n = 10/group). Serum levels of glucose, glycated hemoglobin, and insulin were determined weekly. The retinal thickness was measured using optical coherence tomography (OCT) at 4 weeks after treatments. The retinal expression and serum levels of vascular formation, inflammation, and oxidative stress-associated molecules were examined. Our results demonstrated that FA, but not MET, played a protective role against retinal thinning in the early stage of DR in db/db mice, although FA did not exhibit antihyperglycemic effect. In addition, retinal expression and serum levels of a panel of molecules associated with angiogenesis (CD31 and VEGFR), inflammation (IL-1β and NLRP3), and oxidative stress (3-NT, 4-HNE, Vav2, and NOX4) were significantly downregulated in FA-treated diabetic mice compared with those in saline-treated controls. Furthermore, the serum level of homocysteine was also markedly decreased following FA treatments. These findings suggest that through potential suppressions on angiogenesis, inflammation, and oxidative stress, FA may serve as a potential therapeutic agent against DR.
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Affiliation(s)
- Xun-Wen Lei
- The First Hospital of Lanzhou University, Lanzhou, China, .,The First Clinical Medical College of Lanzhou University, Lanzhou, China, .,Evidence-Based Medicine Center, School of Basic Medical Sciences of Lanzhou University, Lanzhou, China,
| | - Qiang Li
- The First Hospital of Lanzhou University, Lanzhou, China.,The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Jin-Zhi Zhang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China
| | - Yue-Mei Zhang
- The First Hospital of Lanzhou University, Lanzhou, China
| | - Yang Liu
- The First Hospital of Lanzhou University, Lanzhou, China
| | - Ke-Hu Yang
- The First Clinical Medical College of Lanzhou University, Lanzhou, China.,Evidence-Based Medicine Center, School of Basic Medical Sciences of Lanzhou University, Lanzhou, China.,Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, China
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15
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Resveratrol Anti-Obesity Effects: Rapid Inhibition of Adipocyte Glucose Utilization. Antioxidants (Basel) 2019; 8:antiox8030074. [PMID: 30917543 PMCID: PMC6466544 DOI: 10.3390/antiox8030074] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 03/19/2019] [Accepted: 03/22/2019] [Indexed: 12/11/2022] Open
Abstract
Studies in animal models of diabetes and obesity have shown that resveratrol mitigates complications of metabolic diseases, beyond those resulting from oxidative stress. Furthermore, results obtained with cultured preadipocytes have also revealed that prolonged resveratrol treatment impairs adipogenesis. Considering the role of adipocytes in the hypertrophy of fat stores, and keeping in mind that insulin is the main trigger of excessive energy storage during post-prandial periods, the present study aimed to investigate how short-term effects of resveratrol can limit glucose disposal in a gut-adipose tissue axis. We found that resveratrol exhibits a more potent inhibitory capacity towards α-glucosidase than pancreatic lipase activity. Resveratrol also rapidly blunts glucose transport in mature fat cells by counteracting the effect of insulin and insulin-like lipogenic agents. Within two hours, resveratrol also inhibited the incorporation of glucose into lipids of adipocytes, which was unaffected by membrane cholesterol depletion. Moreover, the comparison between adipocytes with invalidated semicarbazide-sensitive amine oxidase activity and their control, or between resveratrol and several inhibitors, did not indicate that the recently described interaction of resveratrol with amine oxidases was involved in its antilipogenic effect. Caffeine and piceatannol, previously said to interact with glucose carriers, also inhibit lipogenesis in adipocytes, whereas other antioxidant phytochemicals do not reproduce such an antilipogenic effect. This study highlights the diverse first steps by which resveratrol impairs excessive fat accumulation, indicating that this natural molecule and its derivatives deserve further studies to develop their potential anti-obesity properties.
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Oyagbemi AA, Omobowale TO, Awoyomi OV, Ajibade TO, Falayi OO, Ogunpolu BS, Okotie UJ, Asenuga ER, Adejumobi OA, Hassan FO, Ola-Davies OE, Saba AB, Adedapo AA, Yakubu MA. Cobalt chloride toxicity elicited hypertension and cardiac complication via induction of oxidative stress and upregulation of COX-2/Bax signaling pathway. Hum Exp Toxicol 2018; 38:519-532. [PMID: 30596275 DOI: 10.1177/0960327118812158] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cobalt is a ferromagnetic metal with extensive industrial and biological applications. To assess the toxic effects of, and mechanisms involved in cobalt chloride (CoCl2)-induced cardio-renal dysfunctions. Male Wistar rats were exposed orally, daily through drinking water to 0 ppm (control), 150 ppm, 300 ppm, and 600 ppm of CoCl2, respectively. Following exposure, results revealed significant ( p < 0.05) rise in markers of oxidative stress, but decreased activities of catalase, glutathione peroxidase, glutathione-S-transferase, and reduced glutathione content in cardiac and renal tissues. There were significant increases in systolic, diastolic, and mean arterial blood pressure at the 300- and 600-ppm level of CoCl2-exposed rats relative to the control. Prolongation of QT and QTc intervals was observed in CoCl2 alone treated rats. Also, there were significant increases in the heart rates, and reduction in P wave, and PR duration of rats administered CoCl2. Histopathology of the kidney revealed peritubular and periglomerular inflammation, focal glomerular necrosis following CoCl2 exposure. Further, cyclooxygenase-2 and B-cell associated protein X expressions were upregulated in the cardiac and renal tissues of CoCl2-exposed rats relative to the control. Combining all, results from this study implicated oxidative stress, inflammation, and apoptosis as pathologic mechanisms in CoCl2-induced hypertension and cardiovascular complications of rats.
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Affiliation(s)
- A A Oyagbemi
- 1 Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - T O Omobowale
- 2 Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - O V Awoyomi
- 3 Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Nigeria
| | - T O Ajibade
- 1 Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - O O Falayi
- 4 Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - B S Ogunpolu
- 2 Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - U J Okotie
- 3 Federal College of Animal Health and Production Technology, Moor Plantation, Ibadan, Nigeria
| | - E R Asenuga
- 5 Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Benin, Ibadan, Nigeria
| | - O A Adejumobi
- 2 Department of Veterinary Medicine, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - F O Hassan
- 1 Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - O E Ola-Davies
- 1 Department of Veterinary Physiology and Biochemistry, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - A B Saba
- 4 Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - A A Adedapo
- 4 Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria
| | - M A Yakubu
- 4 Department of Veterinary Pharmacology and Toxicology, Faculty of Veterinary Medicine, University of Ibadan, Ibadan, Nigeria.,6 Department of Environmental and Interdisciplinary Sciences, College of Science, Engineering and Technology, Vascular Biology Unit, Center for Cardiovascular Diseases, COPHS, Texas Southern University, Houston, TX, USA
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Bubb KJ, Ritchie RH, Figtree GA. Modified redox signaling in vasculature after chronic infusion of the insulin receptor antagonist, S961. Microcirculation 2018; 26:e12501. [PMID: 30178465 DOI: 10.1111/micc.12501] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 07/02/2018] [Accepted: 08/30/2018] [Indexed: 11/28/2022]
Abstract
BACKGROUND Type 2 diabetes and associated vascular complications cause substantial morbidity and mortality. It is important to investigate mechanisms and test therapies in relevant physiological models, yet few animal models adequately recapitulate all aspects of the human condition. OBJECTIVE We sought to determine the potential of using an insulin receptor antagonist, S961, in mice for investigating vascular pathophysiology. METHODS S961 was infused into mice for 4 weeks. Blood glucose was monitored, and insulin was measured at the end of the protocol. Blood pressure and pressor responses to vasodilators were measured in cannulated mice, and vascular reactive oxygen and nitrogen species were measured in isolated tissue. RESULTS S961 infusion-induced hyperglycemia and hyperinsulinemia. There was evidence of increased vascular reactive oxygen and nitrogen species and modification of NO-mediated signaling. Pressor responses to a NO donor were attenuated, but responses to bradykinin were preserved. CONCLUSIONS Infusion of S961, an insulin receptor antagonist, results in the production of a mouse model of type 2 diabetes that may be useful for investigating redox signaling in the vasculature of insulin-resistant mice over the short term. It is limited by both the transient nature of the hyperglycemia and incomplete functional analogy to the human condition.
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Affiliation(s)
- Kristen J Bubb
- Cardiovascular and Thoracic Health, Kolling Institute of Medical Research, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
| | - Rebecca H Ritchie
- Heart Failure Pharmacology Laboratory, Basic Science Domain, Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
| | - Gemma A Figtree
- Cardiovascular and Thoracic Health, Kolling Institute of Medical Research, Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia
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El Midaoui A, Haddad Y, Filali-Zegzouti Y, Couture R. Argan Oil as an Effective Nutri-Therapeutic Agent in Metabolic Syndrome: A Preclinical Study. Int J Mol Sci 2017; 18:ijms18112492. [PMID: 29165388 PMCID: PMC5713458 DOI: 10.3390/ijms18112492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/17/2017] [Accepted: 11/18/2017] [Indexed: 01/22/2023] Open
Abstract
The present study aims at examining the effects of argan oil on the three main cardiovascular risk factors associated with metabolic syndrome (hypertension, insulin resistance and obesity) and on one of its main complications, neuropathic pain. Male Sprague-Dawley rats had free access to a drinking solution containing 10% d-glucose or tap water for 12 weeks. The effect of argan oil was compared to that of corn oil given daily by gavage during 12 weeks in glucose-fed rats. Glucose-fed rats showed increases in systolic blood pressure, epididymal fat, plasma levels of triglycerides, leptin, glucose and insulin, insulin resistance, tactile and cold allodynia in association with a rise in superoxide anion production and NADPH oxidase activity in the thoracic aorta, epididymal fat and gastrocnemius muscle. Glucose-fed rats also showed rises in B1 receptor protein expression in aorta and gastrocnemius muscle. Argan oil prevented or significantly reduced all those anomalies with an induction in plasma adiponectin levels. In contrast, the same treatment with corn oil had a positive impact only on triglycerides, leptin, adiponectin and insulin resistance. These data are the first to suggest that argan oil is an effective nutri-therapeutic agent to prevent the cardiovascular risk factors and complications associated with metabolic syndrome.
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Affiliation(s)
- Adil El Midaoui
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3C 3J7, Canada.
- Department of Biology, FST Errachidia, Moulay Ismail University, Errachidia, Morocco.
| | - Youssef Haddad
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3C 3J7, Canada.
| | | | - Réjean Couture
- Department of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3C 3J7, Canada.
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Yzydorczyk C, Li N, Chehade H, Mosig D, Bidho M, Keshavjee B, Armengaud JB, Nardou K, Siddeek B, Benahmed M, Vergely C, Simeoni U. Transient postnatal overfeeding causes liver stress-induced premature senescence in adult mice. Sci Rep 2017; 7:12911. [PMID: 29018245 PMCID: PMC5635041 DOI: 10.1038/s41598-017-11756-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Accepted: 08/25/2017] [Indexed: 02/08/2023] Open
Abstract
Unbalanced nutrition early in life is increasingly recognized as an important factor in the development of chronic, non-communicable diseases at adulthood, including metabolic diseases. We aimed to determine whether transient postnatal overfeeding (OF) leads to liver stress-induced premature senescence (SIPS) of hepatocytes in association with liver structure and hepatic function alterations. Litters sizes of male C57BL/6 mice were adjusted to 9 pups (normal feeding, NF) or reduced to 3 pups during the lactation period to induce transient postnatal OF. Compared to the NF group, seven-month-old adult mice transiently overfed during the postnatal period were overweight and developed glucose intolerance and insulin resistance. Their livers showed microsteatosis and fibrosis, while hepatic insulin signaling and glucose transporter protein expressions were altered. Increased hepatic oxidative stress (OS) was observed, with increased superoxide anion production, glucose-6-phosphate dehydrogenase protein expression, oxidative DNA damage and decreased levels of antioxidant defense markers, such as superoxide dismutase and catalase proteins. Hepatocyte senescence was characterized by increased p21WAF, p53, Acp53, p16INK4a and decreased pRb/Rb and Sirtuin-1 (SIRT-1) protein expression levels. Transient postnatal OF induces liver OS at adulthood, associated with hepatocyte SIPS and alterations in liver structure and hepatic functions, which could be mediated by a SIRT-1 deficiency.
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Affiliation(s)
- Catherine Yzydorczyk
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland.
| | - Na Li
- Equipe: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (AE 7460, PEC2), UFR Sciences de Santé, Université de Bourgogne Franche-Comté, Dijon, France
| | - Hassib Chehade
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Dolores Mosig
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Mickael Bidho
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Basile Keshavjee
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Jean Baptiste Armengaud
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Katya Nardou
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Benazir Siddeek
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Mohamed Benahmed
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
| | - Catherine Vergely
- Equipe: Physiopathologie et Epidémiologie Cérébro-Cardiovasculaires (AE 7460, PEC2), UFR Sciences de Santé, Université de Bourgogne Franche-Comté, Dijon, France
| | - Umberto Simeoni
- Woman-Mother-Child Department, Division of Pediatrics, DOHaD Laboratory, Centre Hospitalier Universitaire Vaudois and University of Lausanne, Lausanne, Switzerland
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Smith AD, Brands MW, Wang MH, Dorrance AM. Obesity-Induced Hypertension Develops in Young Rats Independently of the Renin-Angiotensin-Aldosterone System. Exp Biol Med (Maywood) 2016; 231:282-7. [PMID: 16514174 DOI: 10.1177/153537020623100307] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
A correlation exists between obesity and hypertension. In the currently available models of diet-induced obesity, the treatment of rats with a high fat (HF) diet does not begin until adulthood. Our aim was to develop and characterize a model of pre-pubescent obesity-induced hypertension. Male Sprague-Dawley rats were fed a HF diet (35% fat) for 10 weeks, beginning at age 3 weeks. Blood pressure was measured by tail-cuff, and a terminal blood sample was obtained to measure fasting blood glucose, insulin, plasma renin, aldosterone, thiobarbitutic acid reactive substances (TBARS), and free 8-isoprostanes levels. The vascular reactivity in the aorta was assessed using a myograph. Blood pressure was increased in rats fed the HF diet (HF, 161 ± 2 mm Hg vs. control, 137 ± 2 mm Hg, P < 0.05). Blood glucose (HF, 155 ± 4 mg/dL vs. control, 123 ± 5 mg/dL, P < 0.05), insulin (HF, 232 ± 63 pM vs. control, 60 ± 11 pM, P < 0.05), TBARS (expressed as nM of malondialdehyde [MDA]/ml [HF, 1.8 ± 0.37 nM MDA/ml vs. control 1.05 ± 0.09 nM MDA/ml, P < 0.05]), and free 8-isoprostanes (HF, 229 ± 68 pg/ml vs. control, 112 ± 9 pg/ml, P < 0.05) levels were elevated in the HF diet group. Interestingly, plasma renin and aldosterone levels were not different between the groups. The maximum vasoconstriction to phenylephrine (10−4 M) was increased in the HF diet group (HF, 26.1 ± 1.5 mN vs. control 22.3 ± 1.2 mN, P < 0.05). In conclusion, pre-pubescent rats become hypertensive and have increased oxidative stress and enhanced vasoconstriction when fed a HF diet. Surprisingly, this occurs without the increase in renin or aldosterone levels seen in the adult models of diet-induced obesity.
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Affiliation(s)
- Anita D Smith
- Department of Physiology, Medical College of Georgia, Augusta, 30912-3000, USA.
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Salim HM, Fukuda D, Yagi S, Soeki T, Shimabukuro M, Sata M. Glycemic Control with Ipragliflozin, a Novel Selective SGLT2 Inhibitor, Ameliorated Endothelial Dysfunction in Streptozotocin-Induced Diabetic Mouse. Front Cardiovasc Med 2016; 3:43. [PMID: 27833913 PMCID: PMC5080286 DOI: 10.3389/fcvm.2016.00043] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 10/10/2016] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Endothelial dysfunction caused by increased oxidative stress is a critical initiator of macro- and micro-vascular disease development in diabetic patients. Ipragliflozin, a selective sodium-glucose cotransporter 2 (SGLT2) inhibitor, offers a novel approach for the treatment of diabetes by enhancing urinary glucose excretion. The aim of this study was to examine whether ipragliflozin attenuates endothelial dysfunction in diabetic mice. METHODS Eight-week-old male C57BL/6 mice were treated with streptozotocin (150 mg/kg) by a single intraperitoneal injection to induce diabetes mellitus. At 3 days of injection, ipragliflozin (3 mg/kg/day) was administered via gavage for 3 weeks. Vascular function was assessed by isometric tension recording. Human umbilical vein endothelial cells (HUVEC) were used for in vitro experiments. RNA and protein expression were examined by quantitative RT-PCR (qPCR) and western blot, respectively. Oxidative stress was determined by measuring urine 8-hydroxy-2'-deoxyguanosine (8-OHdG) level. RESULTS Ipragliflozin administration significantly reduced blood glucose level (P < 0.001) and attenuated the impairment of endothelial function in diabetic mice, as determined by acetylcholine-dependent vasodilation (P < 0.001). Ipragliflozin did not alter metabolic parameters, such as body weight and food intake. Ipragliflozin administration ameliorated impaired phosphorylation of Akt and eNOSSer1177 in the abdominal aorta and reduced reactive oxygen species generation as determined by urinary excretion of 8-OHdG in diabetic mice. Furthermore, qPCR analyses demonstrated that ipragliflozin decreased the expression of inflammatory molecules [e.g., monocyte chemoattractant protein-1 (MCP-1) vascular cell adhesion molecule-1 (VCAM-1), and intercellular adhesion molecule (ICAM)-1] in the abdominal aorta (P < 0.05). In in vitro studies, incubation with methylglyoxal, one of the advanced glycation end products, significantly impaired phosphorylation of Akt and eNOSSer1177 (P < 0.01) and increased the expression of MCP-1, VCAM-1, and ICAM-1 in HUVEC. CONCLUSION Ipragliflozin improved hyperglycemia and prevented the development of endothelial dysfunction under a hyperglycemic state, at least partially by attenuation of oxidative stress.
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Affiliation(s)
- Hotimah Masdan Salim
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Daiju Fukuda
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Shusuke Yagi
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Takeshi Soeki
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Michio Shimabukuro
- Department of Cardio-Diabetes Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
| | - Masataka Sata
- Department of Cardiovascular Medicine, Institute of Biomedical Sciences, Tokushima University Graduate School , Tokushima , Japan
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Les F, Deleruyelle S, Cassagnes LE, Boutin JA, Balogh B, Arbones-Mainar JM, Biron S, Marceau P, Richard D, Nepveu F, Mauriège P, Carpéné C. Piceatannol and resveratrol share inhibitory effects on hydrogen peroxide release, monoamine oxidase and lipogenic activities in adipose tissue, but differ in their antilipolytic properties. Chem Biol Interact 2016; 258:115-25. [PMID: 27475863 DOI: 10.1016/j.cbi.2016.07.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/05/2016] [Accepted: 07/11/2016] [Indexed: 02/06/2023]
Abstract
Piceatannol is a hydroxylated derivative of resveratrol. While both dietary polyphenols coexist in edible plants and fruits, and share equivalent concentrations in several wines, the influence of piceatannol on adiposity has been less studied than that of resveratrol. Though resveratrol is now recognized to limit fat deposition in various obesity models, the benefit of its dietary supplementation remains under debate regarding human obesity treatment or prevention. The research for more potent resveratrol analogs is therefore still undergoing. This prompted us to compare various effects of piceatannol and resveratrol directly on human adipose tissue (hAT). Hydrogen peroxide release was measured by Amplex Red-based fluorescence in subcutaneous hAT samples from obese patients. Interactions of stilbenes with human amine oxidases and quinone reductase were assessed by radiometric methods, computational docking and electron paramagnetic resonance. Influences on lipogenic and lipolytic activities were compared in mouse adipocytes. Resveratrol and piceatannol inhibited monoamine oxidase (MAO) with respective IC50 of 18.5 and 133.7 μM, but not semicarbazide-sensitive amine oxidase (SSAO) in hAT. For both stilbenes, the docking scores were better for MAO than for SSAO. Piceatannol and resveratrol similarly hampered hydrogen peroxide detection in assays with and without hAT, while they shared pro-oxidant activities when incubated with purified quinone reductase. They exhibited similar dose-dependent inhibition of adipocyte lipogenic activity. Only piceatannol inhibited basal and stimulated lipolysis when incubated at a dose ≥100 μM. Thus, piceatannol exerted on fat cells dose-dependent effects similar to those of resveratrol, except for a stronger antilipolytic action. In this regard, piceatannol should be useful in limiting the lipotoxicity related to obesity when ingested or administered alone - or might hamper the fat mobilization induced by resveratrol when simultaneously administered with it.
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Affiliation(s)
- Francisco Les
- Instit. Maladies Métaboliques et Cardiovasculaires, I2MC, INSERM U1048, Instit. National de la Santé et de la Recherche Médicale, Toulouse, France; Dpt. of Pharmacy, Fac. Health Sciences, Univ. San Jorge, Zaragoza, Spain
| | - Simon Deleruyelle
- Instit. Maladies Métaboliques et Cardiovasculaires, I2MC, INSERM U1048, Instit. National de la Santé et de la Recherche Médicale, Toulouse, France; I2MC, CHU Rangueil, Univ. Paul Sabatier, Toulouse, France
| | | | - Jean A Boutin
- Dpt. de Biotechnologie, Chimie & Biologie, Instit. de Recherches Servier, Croissy sur Seine, France
| | - Balázs Balogh
- Dpt. of Organic Chemistry, Semmelweiss Univ., Budapest, Hungary
| | | | - Simon Biron
- Dpt. of Surgery, Fac. Medicine, Laval Univ., CRIUCPQ, Québec, Canada
| | - Picard Marceau
- Dpt. of Surgery, Fac. Medicine, Laval Univ., CRIUCPQ, Québec, Canada
| | - Denis Richard
- Dpt. of Physiology, Fac. Medicine, Laval Univ., CRIUCPQ, Québec, Canada
| | - Françoise Nepveu
- Univ. of Toulouse, PHARMA-DEV, Univ. Paul Sabatier & IRD, Toulouse, France
| | - Pascale Mauriège
- Dpt. of Kinesiology, Fac. Medicine, Laval Univ., CRIUCPQ, Québec, Canada
| | - Christian Carpéné
- Instit. Maladies Métaboliques et Cardiovasculaires, I2MC, INSERM U1048, Instit. National de la Santé et de la Recherche Médicale, Toulouse, France; I2MC, CHU Rangueil, Univ. Paul Sabatier, Toulouse, France.
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Simões FV, de Batista PR, Botelho T, Ribeiro-Júnior RF, Padilha AS, Vassallo DV. Treatment with high dose of atorvastatin reduces vascular injury in diabetic rats. Pharmacol Rep 2016; 68:865-73. [PMID: 27351941 DOI: 10.1016/j.pharep.2016.04.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 04/28/2016] [Accepted: 04/29/2016] [Indexed: 10/21/2022]
Abstract
BACKGROUND Previous reports showed conflicting results regarding the treatment effects of statin on Diabetes mellitus (DM). We investigated how treatment with high dose of atorvastatin affects the impaired vascular function in diabetic rats. METHODS Atorvastatin (80mg/kg/day, oral gavage, 4 weeks) or its vehicle was administered to male control or streptozotocin (STZ)-induced diabetic rats. Aortic segments were used to investigate the vascular reactivity, protein expression of cyclooxygenase-2 (COX-2) and nicotinamide adenine dinucleotide phosphate oxidase (NADPH oxidase) 1 (NOX1) and superoxide anions levels. RESULTS Atorvastatin treatment did not affect glycemia levels. In diabetic rats, the vascular reactivity to phenylephrine increased compared with controls and the atorvastatin treatment reduced this response. Removal of the endothelium increased the response to phenylephrine in control rats, but not in the diabetic group. Atorvastatin increased the endothelial modulation in diabetic rats. L-NAME (100μM) increased the reactivity in all groups, but this effect was greater in atorvastatin-treated diabetic rats. Indomethacin (10μM) and NS398 (1μM) decreased the contractile response in diabetic rats and atorvastatin reversed these effects, without changing COX-2 expression. Apocynin (30μM) decreased the phenylephrine response in diabetic rats, which also showed increased NOX1 and superoxide anions; these effects were prevented by atorvastatin treatment. CONCLUSIONS The results suggest that treatment with high dose of atorvastatin, independent of glycemia, improves endothelial function in aortas from diabetic rats by reducing the constrictor prostanoids derived from COX-2 and by reducing the oxidative stress by NADPH oxidase, as well as a possible increasing of nitric oxide participation.
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Affiliation(s)
- Fabiana Vieira Simões
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Priscila Rossi de Batista
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Tatiani Botelho
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | | | - Alessandra Simão Padilha
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Dalton Valentim Vassallo
- Department of Physiological Sciences, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil; Escola Superior de Ciências da Santa Casa de Misericórdia de Vitória (EMESCAM), Vitória, ES, Brazil.
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Lemon JA, Aksenov V, Samigullina R, Aksenov S, Rodgers WH, Rollo CD, Boreham DR. A multi-ingredient dietary supplement abolishes large-scale brain cell loss, improves sensory function, and prevents neuronal atrophy in aging mice. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2016; 57:382-404. [PMID: 27199101 DOI: 10.1002/em.22019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 04/14/2016] [Indexed: 06/05/2023]
Abstract
Transgenic growth hormone mice (TGM) are a recognized model of accelerated aging with characteristics including chronic oxidative stress, reduced longevity, mitochondrial dysfunction, insulin resistance, muscle wasting, and elevated inflammatory processes. Growth hormone/IGF-1 activate the Target of Rapamycin known to promote aging. TGM particularly express severe cognitive decline. We previously reported that a multi-ingredient dietary supplement (MDS) designed to offset five mechanisms associated with aging extended longevity, ameliorated cognitive deterioration and significantly reduced age-related physical deterioration in both normal mice and TGM. Here we report that TGM lose more than 50% of cells in midbrain regions, including the cerebellum and olfactory bulb. This is comparable to severe Alzheimer's disease and likely explains their striking age-related cognitive impairment. We also demonstrate that the MDS completely abrogates this severe brain cell loss, reverses cognitive decline and augments sensory and motor function in aged mice. Additionally, histological examination of retinal structure revealed markers consistent with higher numbers of photoreceptor cells in aging and supplemented mice. We know of no other treatment with such efficacy, highlighting the potential for prevention or amelioration of human neuropathologies that are similarly associated with oxidative stress, inflammation and cellular dysfunction. Environ. Mol. Mutagen. 57:382-404, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- J A Lemon
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, 1280 Main Street West, Hamilton ON, Canada, L8S 4K1
| | - V Aksenov
- Department of Biology, McMaster University, 1280 Main Street West, Hamilton ON, Canada, L8S 4K1
| | - R Samigullina
- Department of Biology, McMaster University, 1280 Main Street West, Hamilton ON, Canada, L8S 4K1
| | - S Aksenov
- Department of Pathology, New York-Presbyterian/Queens Hospital, 56-45 Main Street, Flushing, New York, 11355
| | - W H Rodgers
- Department of Pathology, New York-Presbyterian/Queens Hospital, 56-45 Main Street, Flushing, New York, 11355
| | - C D Rollo
- Department of Biology, McMaster University, 1280 Main Street West, Hamilton ON, Canada, L8S 4K1
| | - D R Boreham
- Department of Medical Physics and Applied Radiation Sciences, McMaster University, 1280 Main Street West, Hamilton ON, Canada, L8S 4K1
- Medical Sciences Division, Northern Ontario School of Medicine, 935 Ramsey Lake Road, Sudbury ON, Canada, P3E 2C6
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Aging Increases Susceptibility to High Fat Diet-Induced Metabolic Syndrome in C57BL/6 Mice: Improvement in Glycemic and Lipid Profile after Antioxidant Therapy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1987960. [PMID: 27057272 PMCID: PMC4775807 DOI: 10.1155/2016/1987960] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Accepted: 01/18/2016] [Indexed: 12/27/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) has been considered a novel component of the metabolic syndrome (MetS), with the oxidative stress participating in its progression. This study aimed to evaluate the metabolic profile in young and old mice with MetS, and the effects of apocynin and tempol on glycemic and lipid parameters. Young and old C57BL/6 mice with high fat diet- (HFD-) induced MetS received apocynin and tempol 50 mg·kg−1/day in their drinking water for 10 weeks. After HFD, the young group showed elevated fasting glucose, worsened lipid profile in plasma, steatosis, and hepatic lipid peroxidation. Nevertheless, the old group presented significant increase in fasting insulin levels, insulin resistance, plasma and hepatic lipid peroxidation, and pronounced steatosis. The hepatic superoxide dismutase and catalase activity did not differ between the groups. Tempol and apocynin seemed to prevent hepatic lipid deposition in both groups. Furthermore, apocynin improved glucose tolerance and insulin sensitivity in old mice. In summary, old mice are more susceptible to HFD-induced metabolic changes than their young counterparts. Also, the antioxidant therapy improved insulin sensitivity and glucose tolerance, and in addition, apocynin seemed to prevent the HFD-induced hepatic fat deposition, suggesting an important role of oxidative stress in the induction of NAFLD.
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Løhr M, Jensen A, Eriksen L, Grønbæk M, Loft S, Møller P. Age and metabolic risk factors associated with oxidatively damaged DNA in human peripheral blood mononuclear cells. Oncotarget 2015; 6:2641-53. [PMID: 25650665 PMCID: PMC4413607 DOI: 10.18632/oncotarget.3202] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 12/12/2014] [Indexed: 12/22/2022] Open
Abstract
Aging is associated with oxidative stress-generated damage to DNA and this could be related to metabolic disturbances. This study investigated the association between levels of oxidatively damaged DNA in peripheral blood mononuclear cells (PBMCs) and metabolic risk factors in 1,019 subjects, aged 18-93 years. DNA damage was analyzed as strand breaks by the comet assay and levels of formamidopyrimidine (FPG-) and human 8-oxoguanine DNA glycosylase 1 (hOGG1)-sensitive sites There was an association between age and levels of FPG-sensitive sites for women, but not for men. The same tendency was observed for the level of hOGG1-sensitive sites, whereas there was no association with the level of strand breaks. The effect of age on oxidatively damaged DNA in women disappeared in multivariate models, which showed robust positive associations between DNA damage and plasma levels of triglycerides, cholesterol and glycosylated hemoglobin (HbA1c). In the group of men, there were significant positive associations between alcohol intake, HbA1c and FPG-sensitive sites in multivariate analysis. The levels of metabolic risk factors were positively associated with age, yet only few subjects fulfilled all metabolic syndrome criteria. In summary, positive associations between age and levels of oxidatively damaged DNA appeared mediated by age-related increases in metabolic risk factors.
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Affiliation(s)
- Mille Løhr
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Annie Jensen
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Louise Eriksen
- National Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - Morten Grønbæk
- National Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - Steffen Loft
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
| | - Peter Møller
- Department of Public Health, Section of Environmental Health, University of Copenhagen, Copenhagen, Denmark
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Bačić G, Pavićević A, Peyrot F. In vivo evaluation of different alterations of redox status by studying pharmacokinetics of nitroxides using magnetic resonance techniques. Redox Biol 2015; 8:226-42. [PMID: 26827126 PMCID: PMC4753396 DOI: 10.1016/j.redox.2015.10.007] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2015] [Accepted: 10/25/2015] [Indexed: 12/22/2022] Open
Abstract
Free radicals, particularly reactive oxygen species (ROS), are involved in various pathologies, injuries related to radiation, ischemia-reperfusion or ageing. Unfortunately, it is virtually impossible to directly detect free radicals in vivo, but the redox status of the whole organism or particular organ can be studied in vivo by using magnetic resonance techniques (EPR and MRI) and paramagnetic stable free radicals - nitroxides. Here we review results obtained in vivo following the pharmacokinetics of nitroxides on experimental animals (and a few in humans) under various conditions. The focus was on conditions where the redox status has been altered by induced diseases or harmful agents, clearly demonstrating that various EPR/MRI/nitroxide combinations can reliably detect metabolically induced changes in the redox status of organs. These findings can improve our understanding of oxidative stress and provide a basis for studying the effectiveness of interventions aimed to modulate oxidative stress. Also, we anticipate that the in vivo EPR/MRI approach in studying the redox status can play a vital role in the clinical management of various pathologies in the years to come providing the development of adequate equipment and probes.
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Affiliation(s)
- Goran Bačić
- EPR Laboratory, Faculty of Physical Chemistry, University of Belgrade, 11000 Belgrade, Serbia
| | - Aleksandra Pavićević
- EPR Laboratory, Faculty of Physical Chemistry, University of Belgrade, 11000 Belgrade, Serbia
| | - Fabienne Peyrot
- LCBPT, UMR 8601 CNRS - Université Paris Descartes, Sorbonne Paris Cité, 75006 Paris, France; ESPE of Paris, Paris Sorbonne Université, 75016 Paris, France
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Ciobanu DM, Olar LE, Stefan R, Veresiu IA, Bala CG, Mircea PA, Roman G. Fluorophores advanced glycation end products (AGEs)-to-NADH ratio is predictor for diabetic chronic kidney and cardiovascular disease. J Diabetes Complications 2015; 29:893-7. [PMID: 26169772 DOI: 10.1016/j.jdiacomp.2015.06.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 05/26/2015] [Accepted: 06/15/2015] [Indexed: 01/01/2023]
Abstract
AIMS An imbalance in advanced glycation end products (AGEs) and NADH formation has been associated with diabetic chronic kidney disease (CKD) and cardiovascular disease (CVD). No data have been reported on simultaneous measurement of AGEs and NADH in type 2 diabetes (T2DM) patients. We aimed to compare AGEs, NADH and the AGEs-to-NADH ratio in T2DM and controls, and to assess its relationship with diabetic CKD and CVD. MATERIAL AND METHODS In this cross-sectional study, we measured serum AGEs (370/435nm) and NADH (370/460nm) in T2DM patients (n=63) and controls (n=25) using fluorescence spectroscopy. The AGEs-to-NADH ratio was analyzed according to diabetic CKD and CVD. RESULTS We found significantly higher AGEs-to-NADH ratio in T2DM compared to controls. The AGEs-to-NADH ratio was significantly associated with triglycerides, blood glucose, HDL-cholesterol, estimated glomerular filtration rate. The AGEs-to-NADH ratio was a significant predictor for the presence of diabetic CKD and CVD when using ROC curves. Multivariate analysis showed that triglycerides and the presence of T2DM were predictors for the AGEs-to-NADH ratio. CONCLUSIONS These findings suggest that the fluorophores AGEs-to-NADH ratio could be a new biomarker for the presence of diabetic CKD and CVD.
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Affiliation(s)
- Dana M Ciobanu
- "Iuliu Hatieganu" University of Medicine and Pharmacy, Faculty of Medicine, Department of Diabetes, Nutrition and Metabolic Diseases, 2-4 Clinicilor Street, Cluj-Napoca, 400006, Romania.
| | - Loredana E Olar
- University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, 3-5 Calea Manastur Street, 400372, Cluj-Napoca, Romania
| | - Razvan Stefan
- University of Agricultural Sciences and Veterinary Medicine, Faculty of Veterinary Medicine, 3-5 Calea Manastur Street, 400372, Cluj-Napoca, Romania
| | - Ioan A Veresiu
- "Iuliu Hatieganu" University of Medicine and Pharmacy, Faculty of Medicine, Department of Diabetes, Nutrition and Metabolic Diseases, 2-4 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Cornelia G Bala
- "Iuliu Hatieganu" University of Medicine and Pharmacy, Faculty of Medicine, Department of Diabetes, Nutrition and Metabolic Diseases, 2-4 Clinicilor Street, Cluj-Napoca, 400006, Romania
| | - Petru A Mircea
- "Iuliu Hatieganu" University of Medicine and Pharmacy, Faculty of Medicine, Department of Internal Medicine, First Medical Clinic, 3-5 Clinicilor Street, 400006, Cluj-Napoca, Romania
| | - Gabriela Roman
- "Iuliu Hatieganu" University of Medicine and Pharmacy, Faculty of Medicine, Department of Diabetes, Nutrition and Metabolic Diseases, 2-4 Clinicilor Street, Cluj-Napoca, 400006, Romania
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Floerchinger AM, Jackson MI, Jewell DE, MacLeay JM, Paetau-Robinson I, Hahn KA. Effect of feeding a weight loss food beyond a caloric restriction period on body composition and resistance to weight gain in dogs. J Am Vet Med Assoc 2015. [DOI: 10.2460/javma.247.4.375] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Sánchez A, Martínez P, Muñoz M, Benedito S, García-Sacristán A, Hernández M, Prieto D. Endothelin-1 contributes to endothelial dysfunction and enhanced vasoconstriction through augmented superoxide production in penile arteries from insulin-resistant obese rats: role of ET(A) and ET(B) receptors. Br J Pharmacol 2015; 171:5682-95. [PMID: 25091502 DOI: 10.1111/bph.12870] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Revised: 07/21/2014] [Accepted: 07/26/2014] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND AND PURPOSE We assessed whether endothelin-1 (ET-1) inhibits NO and contributes to endothelial dysfunction in penile arteries in a model of insulin resistance-associated erectile dysfunction (ED). EXPERIMENTAL APPROACH Vascular function was assessed in penile arteries, from obese (OZR) and lean (LZR) Zucker rats, mounted in microvascular myographs. Changes in basal and stimulated levels of superoxide (O2 (-) ) were detected by lucigenin-enhanced chemiluminescence and ET receptor expression was determined by immunohistochemistry. KEY RESULTS ET-1 stimulated acute O2 (-) production that was blunted by tempol and the NADPH oxidase inhibitor, apocynin, but markedly enhanced in obese animals. ET-1 inhibited the vasorelaxant effects of ACh and of the NO donor S-nitroso-N-acetyl-DL-penicillamine in arteries from both LZR and OZR. Selective ETA (BQ123) or ETB receptor (BQ788) antagonists reduced both basal and ET-1-stimulated superoxide generation and reversed ET-1-induced inhibition of NO-mediated relaxations in OZR, while only BQ-123 antagonized ET-1 actions in LZR. ET-1-induced vasoconstriction was markedly enhanced by NO synthase blockade and reduced by endothelium removal and apocynin. In endothelium-denuded penile arteries, apocynin blunted augmented ET-1-induced contractions in OZR. Both ETA and ETB receptors were expressed in smooth muscle and the endothelial layer and up-regulated in arteries from OZR. CONCLUSIONS AND IMPLICATIONS ET-1 stimulates ETA -mediated NADPH oxidase-dependent ROS generation, which inhibits endothelial NO bioavailability and contributes to ET-1-induced contraction in healthy penile arteries. Enhanced vascular expression of ETB receptors contributes to augmented ROS production, endothelial dysfunction and increased vasoconstriction in erectile tissue from insulin-resistant obese rats. Hence, antagonism of ETB receptors might improve the ED associated with insulin-resistant states.
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Affiliation(s)
- A Sánchez
- Departamento de Fisiología, Facultad de Farmacia, Universidad Complutense de Madrid, Madrid, Spain
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LUO GANGJIAN, ZHU GUOSONG, YUAN DONGDONG, YAO WEIFENG, CHI XINJIN, HEI ZIQING. Propofol alleviates acute lung injury following orthotopic autologous liver transplantation in rats via inhibition of the NADPH oxidase pathway. Mol Med Rep 2014; 11:2348-54. [DOI: 10.3892/mmr.2014.2924] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Accepted: 10/31/2014] [Indexed: 11/06/2022] Open
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Effect of orally administered L. fermentum NCIMB 5221 on markers of metabolic syndrome: an in vivo analysis using ZDF rats. Appl Microbiol Biotechnol 2014; 98:115-26. [PMID: 24121931 DOI: 10.1007/s00253-013-5252-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Revised: 09/05/2013] [Accepted: 09/07/2013] [Indexed: 02/06/2023]
Abstract
Metabolic syndrome, encompassing type 2 diabetes mellitus and cardiovascular disease, is a growing health concern of industrialized countries. Ferulic acid (FA) is a phenolic acid found in foods normally consumed by humans that has demonstrated antioxidant activity, cholesterol-lowering capabilities, and anti-tumorigenic properties. Select probiotic bacteria, including Lactobacillus fermentum NCIMB 5221, produce FA due to intrinsic ferulic acid esterase activity. The aim of the present research was to investigate a FA-producing probiotic, L. fermentum NCIMB 5221, as a biotherapeutic for metabolic syndrome. The probiotic formulation was administered daily for 8 weeks to Zucker diabetic fatty (ZDF) rats, a model of hyperlipidemia and hyperglycemia. Results show that the probiotic formulation reduced fasting insulin levels and insulin resistance, significantly reduced serum triglycerides (p = 0.016), lowered serum low-density lipoprotein cholesterol levels (p = 0.008), and significantly reduced the atherogenic (p = 0.016) and atherosclerosis (p = 0.012) index as compared to the control animals. In addition, the probiotic formulation significantly increased high-density lipoprotein cholesterol levels (p = 0.041) as compared to the control animals. This research indicates that administration of the FA-producing L. fermentum NCIMB 5221 has the potential to reduce insulin resistance, hyperinsulinemia, hypercholesterolemia, and other markers involved in the pathogenesis of metabolic syndrome. Further studies are required to investigate the human clinical potential of the probiotic formulation in affecting the markers and pathogenesis of metabolic syndrome.
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Du J, Fan LM, Mai A, Li JM. Crucial roles of Nox2-derived oxidative stress in deteriorating the function of insulin receptors and endothelium in dietary obesity of middle-aged mice. Br J Pharmacol 2014; 170:1064-77. [PMID: 23957783 DOI: 10.1111/bph.12336] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 08/05/2013] [Accepted: 08/08/2013] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND PURPOSE Systemic oxidative stress associated with dietary calorie overload plays an important role in the deterioration of vascular function in middle-aged patients suffering from obesity and insulin resistance. However, effective therapy is still lacking. EXPERIMENTAL APPROACH In this study, we used a mouse model of middle-aged obesity to investigate the therapeutic potential of pharmaceutical inhibition (apocynin, 5 mM supplied in the drinking water) or knockout of Nox2, an enzyme generating reactive oxygen species (ROS), in high-fat diet (HFD)-induced obesity, oxidative stress, insulin resistance and endothelial dysfunction. Littermates of C57BL/6J wild-type (WT) and Nox2 knockout (KO) mice (7 months old) were fed with a HFD (45% kcal fat) or normal chow diet (NCD, 12% kcal fat) for 16 weeks and used at 11 months of age. KEY RESULTS Compared to NCD WT mice, HFD WT mice developed obesity, insulin resistance, dyslipidaemia and hypertension. Aortic vessels from these mice showed significantly increased Nox2 expression and ROS production, accompanied by significantly increased ERK1/2 activation, reduced insulin receptor expression, decreased Akt and eNOS phosphorylation and impaired endothelium-dependent vessel relaxation to acetylcholine. All these HFD-induced abnormalities (except the hyperinsulinaemia) were absent in apocynin-treated WT or Nox2 KO mice given the same HFD. CONCLUSIONS AND IMPLICATIONS In conclusion, Nox2-derived ROS played a key role in damaging insulin receptor and endothelial function in dietary obesity after middle-age. Targeting Nox2 could represent a valuable therapeutic strategy in the metabolic syndrome.
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Affiliation(s)
- Junjie Du
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
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Choi DH, Lee KH, Kim JH, Seo JH, Kim HY, Shin CY, Han JS, Han SH, Kim YS, Lee J. NADPH oxidase 1, a novel molecular source of ROS in hippocampal neuronal death in vascular dementia. Antioxid Redox Signal 2014; 21:533-50. [PMID: 24294978 PMCID: PMC4086030 DOI: 10.1089/ars.2012.5129] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
AIMS Chronic cerebral hypoperfusion (CCH) is a common pathological factor that contributes to neurodegenerative diseases such as vascular dementia (VaD). Although oxidative stress has been strongly implicated in the pathogenesis of VaD, the molecular mechanism underlying the selective vulnerability of hippocampal neurons to oxidative damage remains unknown. We assessed whether the nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (Nox) complex, a specialized superoxide generation system, plays a role in VaD by permanent ligation of bilateral common carotid arteries in rats. RESULTS Male Wistar rats (10 weeks of age) were subjected to bilateral occlusion of the common carotid arteries (two-vessel occlusion [2VO]). Nox1 expression gradually increased in hippocampal neurons, starting at 1 week after 2VO and for approximately 15 weeks after 2VO. The levels of superoxide, DNA oxidation, and neuronal death in the CA1 subfield of the hippocampus, as well as consequential cognitive impairment, were increased in 2VO rats. Both inhibition of Nox by apocynin, a putative Nox inhibitor, and adeno-associated virus-mediated Nox1 knockdown significantly reduced 2VO-induced reactive oxygen species generation, oxidative DNA damage, hippocampal neuronal degeneration, and cognitive impairment. INNOVATION AND CONCLUSION We provided evidence that neuronal Nox1 is activated in the hippocampus under CCH, causing oxidative stress and consequential hippocampal neuronal death and cognitive impairment. This evidence implies that Nox1-mediated oxidative stress plays an important role in neuronal cell death and cognitive dysfunction in VaD. Nox1 may serve as a potential therapeutic target for VaD.
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Affiliation(s)
- Dong-Hee Choi
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
- Department of Medical Science, School of Medicine, Konkuk University, Seoul, Korea
| | - Kyoung-Hee Lee
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Ji-Hye Kim
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Ju-Ha Seo
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Hahn Young Kim
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Chan Young Shin
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Jung-Soo Han
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Seol-Heui Han
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
| | - Yoon-Seong Kim
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida
| | - Jongmin Lee
- Center for Neuroscience Research, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Korea
- Rehabilitation Medicine, School of Medicine, Konkuk University, Seoul, Korea
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Pi X, Xie L, Portbury AL, Kumar S, Lockyer P, Li X, Patterson C. NADPH oxidase-generated reactive oxygen species are required for stromal cell-derived factor-1α-stimulated angiogenesis. Arterioscler Thromb Vasc Biol 2014; 34:2023-32. [PMID: 24990230 DOI: 10.1161/atvbaha.114.303733] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
OBJECTIVE Reactive oxygen species (ROS) act as signaling molecules during angiogenesis; however, the mechanisms used for such signaling events remain unclear. Stromal cell-derived factor-1α (SDF-1α) is one of the most potent angiogenic chemokines. Here, we examined the role of ROS in the regulation of SDF-1α-dependent angiogenesis. APPROACH AND RESULTS Bovine aortic endothelial cells were treated with SDF-1α, and intracellular ROS generation was monitored. SDF-1α treatment induced bovine aortic endothelial cell migration and ROS generation, with the majority of ROS generated by bovine aortic endothelial cells at the leading edge of the migratory cells. Antioxidants and nicotinamide adenine dinucleotide phosphate oxidase (NOX) inhibitors blocked SDF-1α-induced endothelial migration. Furthermore, knockdown of either NOX5 or p22phox (a requisite subunit for NOX1/2/4 activation) significantly impaired endothelial motility and tube formation, suggesting that multiple NOXs regulate SDF-1α-dependent angiogenesis. Our previous study demonstrated that c-Jun N-terminal kinase 3 activity is essential for SDF-1α-dependent angiogenesis. Here, we identified that NOX5 is the dominant NOX required for SDF-1α-induced c-Jun N-terminal kinase 3 activation and that NOX5 and MAP kinase phosphatase 7 (MKP7; the c-Jun N-terminal kinase 3 phosphatase) associate with one another but decrease this interaction on SDF-1α treatment. Furthermore, MKP7 activity was inhibited by SDF-1α, and this inhibition was relieved by NOX5 knockdown, indicating that NOX5 promotes c-Jun N-terminal kinase 3 activation by blocking MKP7 activity. CONCLUSIONS We conclude that NOX is required for SDF-1α signaling and that intracellular redox balance is critical for SDF-1α-induced endothelial migration and angiogenesis.
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Affiliation(s)
- Xinchun Pi
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill.
| | - Liang Xie
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill
| | - Andrea L Portbury
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill
| | - Sarayu Kumar
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill
| | - Pamela Lockyer
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill
| | - Xi Li
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill
| | - Cam Patterson
- From the UNC McAllister Heart Institute (X.P., L.X., A.L.P., P.L., X.L., C.P.), Department of Medicine (X.P., L.X., A.L.P., P.L., X.L., C.P.), and Department of Chemistry (S.K.), University of North Carolina, Chapel Hill
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Protein kinase C in enhanced vascular tone in diabetes mellitus. Int J Cardiol 2014; 174:230-42. [DOI: 10.1016/j.ijcard.2014.04.117] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 04/03/2014] [Accepted: 04/09/2014] [Indexed: 12/24/2022]
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Valsartan slows the progression of diabetic nephropathy in db/db mice via a reduction in podocyte injury, and renal oxidative stress and inflammation. Clin Sci (Lond) 2014; 126:707-20. [PMID: 24195695 DOI: 10.1042/cs20130223] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Higher doses of AngII (angiotensin II) blockers are intended to optimize albuminuria reduction rather than for blood pressure control in chronic kidney disease. However, the long-term renoprotection of high-dose AngII blockers has yet to be defined. The present study sought to determine whether doses of ARB (AngII receptor blocker) that maximally reduce proteinuria could slow the progression of glomerulosclerosis in the uninephrectomized db/db mouse, a model of Type 2 diabetes. Untreated uninephrectomized db/db mice had normal blood pressure, but developed progressive albuminuria and mesangial matrix expansion between 18 and 22 weeks of age, which was associated with increased renal expression of TGFβ1 (transforming growth factor β1), PAI-1 (plasminogen-activator inhibitor-1), type IV collagen and FN (fibronectin). Treatment with valsartan in the drinking water of db/db mice from 18 to 22 weeks of age, at a dose that was determined previously to maximally reduce proteinuria, prevented the increases in albuminuria and the markers of renal fibrosis seen in untreated db/db mice. In addition, WT-1 (Wilms tumour protein-1)-immunopositive podocyte numbers were found to be lower in the untreated glomeruli of mice with diabetes. The expression of podocin and nephrin were continually decreased in mice with diabetes between 18 and 22 weeks of age. These changes are indicative of podocyte injury and the administration of valsartan ameliorated them substantially. Renal expression of TNFα (tumour necrosis factor α), MCP-1 (monocyte chemoattractant protein-1), Nox2 (NADPH oxidase 2), p22phox and p47phox and urine TBARS (thiobarbituric acid-reacting substance) levels, the markers of renal inflammation and oxidative stress, were increased during disease progression in mice with diabetes. Valsartan treatment was shown to reduce these markers. Thus high doses of valsartan not only reduce albuminuria maximally, but also halt the progression of the glomerulosclerosis resulting from Type 2 diabetes via a reduction in podocyte injury and renal oxidative stress and inflammation.
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Carter EL, Ragsdale SW. Modulation of nuclear receptor function by cellular redox poise. J Inorg Biochem 2014; 133:92-103. [PMID: 24495544 DOI: 10.1016/j.jinorgbio.2014.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/28/2013] [Accepted: 01/09/2014] [Indexed: 02/09/2023]
Abstract
Nuclear receptors (NRs) are ligand-responsive transcription factors involved in diverse cellular processes ranging from metabolism to circadian rhythms. This review focuses on NRs that contain redox-active thiol groups, a common feature within the superfamily. We will begin by describing NRs, how they regulate various cellular processes and how binding ligands, corepressors and/or coactivators modulate their activity. We will then describe the general area of redox regulation, especially as it pertains to thiol-disulfide interconversion and the cellular systems that respond to and govern this redox equilibrium. Lastly, we will discuss specific examples of NRs whose activities are regulated by redox-active thiols. Glucocorticoid, estrogen, and the heme-responsive receptor, Rev-erb, will be described in the most detail as they exhibit archetypal redox regulatory mechanisms.
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Affiliation(s)
- Eric L Carter
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Stephen W Ragsdale
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI 48109, USA.
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Narayanan SP, Rojas M, Suwanpradid J, Toque HA, Caldwell RW, Caldwell RB. Arginase in retinopathy. Prog Retin Eye Res 2013; 36:260-80. [PMID: 23830845 PMCID: PMC3759622 DOI: 10.1016/j.preteyeres.2013.06.002] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2013] [Revised: 06/14/2013] [Accepted: 06/25/2013] [Indexed: 12/12/2022]
Abstract
Ischemic retinopathies, such as diabetic retinopathy (DR), retinopathy of prematurity and retinal vein occlusion are a major cause of blindness in developed nations worldwide. Each of these conditions is associated with early neurovascular dysfunction. However, conventional therapies target clinically significant macula edema or neovascularization, which occur much later. Intra-ocular injections of anti-VEGF show promise in reducing retinal edema, but the effects are usually transient and the need for repeated injections increases the risk of intraocular infection. Laser photocoagulation can control pathological neovascularization, but may impair vision and in some patients the retinopathy continues to progress. Moreover, neither treatment targets early stage disease or promotes repair. This review examines the potential role of the ureahydrolase enzyme arginase as a therapeutic target for the treatment of ischemic retinopathy. Arginase metabolizes l-arginine to form proline, polyamines and glutamate. Excessive arginase activity reduces the l-arginine supply for nitric oxide synthase (NOS), causing it to become uncoupled and produce superoxide and less NO. Superoxide and NO react and form the toxic oxidant peroxynitrite. The catabolic products of polyamine oxidation and glutamate can induce more oxidative stress and DNA damage, both of which can cause cellular injury. Studies indicate that neurovascular injury during retinopathy is associated with increased arginase expression/activity, decreased NO, polyamine oxidation, formation of superoxide and peroxynitrite and dysfunction and injury of both vascular and neural cells. Furthermore, data indicate that the cytosolic isoform arginase I (AI) is involved in hyperglycemia-induced dysfunction and injury of vascular endothelial cells whereas the mitochondrial isoform arginase II (AII) is involved in neurovascular dysfunction and death following hyperoxia exposure. Thus, we postulate that activation of the arginase pathway causes neurovascular injury by uncoupling NOS and inducing polyamine oxidation and glutamate formation, thereby reducing NO and increasing oxidative stress, all of which contribute to the retinopathic process.
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Affiliation(s)
- S. Priya Narayanan
- Vision Discovery Institute, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
- Vascular Biology Center, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
| | - Modesto Rojas
- Vision Discovery Institute, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
- Vascular Biology Center, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
| | - Jutamas Suwanpradid
- Vision Discovery Institute, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
- Vascular Biology Center, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
| | - Haroldo A. Toque
- Department of Pharmacology & Toxicology, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
| | - R. William Caldwell
- Vision Discovery Institute, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
- Department of Pharmacology & Toxicology, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
| | - Ruth B. Caldwell
- Vision Discovery Institute, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
- Vascular Biology Center, Georgia Regents University, 1459 Laney Walker Boulevard, Augusta, 30912, USA
- VA Medical Center, One Freedom Way, Augusta, GA, USA
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Tilton SC, Karin NJ, Webb-Robertson BJM, Waters KM, Mikheev V, Lee KM, Corley RA, Pounds JG, Bigelow DJ. Impaired transcriptional response of the murine heart to cigarette smoke in the setting of high fat diet and obesity. Chem Res Toxicol 2013; 26:1034-42. [PMID: 23786483 PMCID: PMC4234196 DOI: 10.1021/tx400078b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Smoking and obesity are each well-established risk factors for cardiovascular heart disease, which together impose earlier onset and greater severity of disease. To identify early signaling events in the response of the heart to cigarette smoke exposure within the setting of obesity, we exposed normal weight and high fat diet-induced obese (DIO) C57BL/6 mice to repeated inhaled doses of mainstream (MS) or sidestream (SS) cigarette smoke administered over a two week period, monitoring effects on both cardiac and pulmonary transcriptomes. MS smoke (250 μg wet total particulate matter (WTPM)/L, 5 h/day) exposures elicited robust cellular and molecular inflammatory responses in the lung with 1466 differentially expressed pulmonary genes (p < 0.01) in normal weight animals and a much-attenuated response (463 genes) in the hearts of the same animals. In contrast, exposures to SS smoke (85 μg WTPM/L) with a CO concentration equivalent to that of MS smoke (~250 CO ppm) induced a weak pulmonary response (328 genes) but an extensive cardiac response (1590 genes). SS smoke and to a lesser extent MS smoke preferentially elicited hypoxia- and stress-responsive genes as well as genes predicting early changes of vascular smooth muscle and endothelium, precursors of cardiovascular disease. The most sensitive smoke-induced cardiac transcriptional changes of normal weight mice were largely absent in DIO mice after smoke exposure, while genes involved in fatty acid utilization were unaffected. At the same time, smoke exposure suppressed multiple proteome maintenance genes induced in the hearts of DIO mice. Together, these results underscore the sensitivity of the heart to SS smoke and reveal adaptive responses in healthy individuals that are absent in the setting of high fat diet and obesity.
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Affiliation(s)
| | | | | | | | | | | | | | - Joel G. Pounds
- Pacific Northwest National Laboratory, Richland, WA 99352
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Utsumi H. Novel Redox Molecular Imaging “ReMI” with Dual Magnetic Resonance. YAKUGAKU ZASSHI 2013; 133:803-14. [DOI: 10.1248/yakushi.13-00139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hideo Utsumi
- Innovation Center for Medical Redox Navigation, Kyushu University
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Al-Rejaie SS, Aleisa AM, Sayed-Ahmed MM, AL-Shabanah OA, Abuohashish HM, Ahmed MM, Al-Hosaini KA, Hafez MM. Protective effect of rutin on the antioxidant genes expression in hypercholestrolemic male Westar rat. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 13:136. [PMID: 23773725 PMCID: PMC3717094 DOI: 10.1186/1472-6882-13-136] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 06/13/2013] [Indexed: 01/09/2023]
Abstract
Background High-cholesterol diet (HCD) increases the oxidative stress in different tissues leading to many diseases. Rutin (RT) is a natural flavonoid (vitamin p), which possesses an antioxidant activity with protective potential. The present study aimed to examine the potential effects of rutin on hypercholesterolemia-induced hepatotoxicity in rat. Methods Male Wistar rats were divided into four groups: GI) control (Rat chow), GII) Rutin (0.2% in rat chow), GIII) HCD (1% cholesterol and 0.5% cholic acid in rat chow) and GIV) rutin (0.2%) + HCD. Results Rutin in combination with HCD induced a significant protective effect against the hepatotoxicity by reducing the plasma level of alanine transaminase (ALT), aspartate aminotransferase (AST), triglyceride (TG), total cholesterol (TC), and low-density lipoprotein (LDL). The HCD (GII) showed a decrease in glutathione peroxidase (GPx), glutathione reductase (GR) and increase in glutathione S transferase α (GSTα), sulfiredoxin-1(Srx1), glutamate-cysteine ligase (GCL) and paraoxonase-1(PON-1) genes expression levels. Conclusion Treatment with rutin reversed all the altered genes induced by HCD nearly to the control levels. The present study concluded that the HCD feedings altered the expression levels of some genes involved in the oxidative stress pathway resulting in DNA damage and hepatotoxicity. Rutin have a hepatoprotective effect through the mechanism of enhancing the antioxidant effect via amelioration of oxidative stress genes.
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Role of lipid peroxidation-derived α, β-unsaturated aldehydes in vascular dysfunction. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:629028. [PMID: 23819013 PMCID: PMC3683506 DOI: 10.1155/2013/629028] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2013] [Revised: 04/30/2013] [Accepted: 05/07/2013] [Indexed: 12/30/2022]
Abstract
Vascular diseases are the most prominent cause of death, and inflammation and vascular dysfunction are key initiators of the pathophysiology of vascular disease. Lipid peroxidation products, such as acrolein and other α, β-unsaturated aldehydes, have been implicated as mediators of inflammation and vascular dysfunction. α, β-Unsaturated aldehydes are toxic because of their high reactivity with nucleophiles and their ability to form protein and DNA adducts without prior metabolic activation. This strong reactivity leads to electrophilic stress that disrupts normal cellular function. Furthermore, α, β-unsaturated aldehydes are reported to cause endothelial dysfunction by induction of oxidative stress, redox-sensitive mechanisms, and inflammatory changes such as induction of cyclooxygenase-2 and cytokines. This review provides an overview of the effects of lipid peroxidation products, α, β-unsaturated aldehydes, on inflammation and vascular dysfunction.
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Influence of blood pressure and body mass index on retinal vascular caliber in preschool-aged children. J Hum Hypertens 2013; 27:523-8. [PMID: 23448844 DOI: 10.1038/jhh.2013.15] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Revised: 01/06/2013] [Accepted: 01/16/2013] [Indexed: 11/08/2022]
Abstract
We assessed the associations between body mass index (BMI) and blood pressure (BP) with the retinal microvasculature among preschool-aged children. Three hundred and seventy-nine children aged 3-<6 years old had gradable retinal photographs, and quantifiable retinal vascular caliber using validated computer-based methods. Weight, height, BMI, waist circumference and BP were obtained using standardized protocols. Mean (±s.d.) BMI and systolic BP in preschool-aged children were 16.0 (±1.8) kg m(-2) and 93.2 (±9.9) mm Hg, respectively. After multivariable adjustment, each kg m(-2) increase in BMI was associated with a 1.06 μm narrowing of retinal arteriolar caliber (P=0.01) and 1.12 μm widening of retinal venular caliber (P=0.02). Children in the 95th percentile (obese) compared with those in the <85th percentile (healthy weight) had narrower retinal arteriolar caliber (∼6.1 μm, Ptrend=0.01) and wider retinal venular caliber (∼6.4 μm, Ptrend=0.01). Each 10 mm Hg increase in systolic BP was associated with a 1.70 μm narrower retinal arteriolar caliber (multivariable-adjusted P=0.02). We show that BMI and systolic BP have inverse linear associations with retinal arteriolar caliber, and BMI has a positive linear association with retinal venular caliber during early childhood. These findings suggests that the influence of BP and BMI on small vessels are continuous and commence early in life.
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Othman A, Ahmad S, Megyerdi S, Mussell R, Choksi K, Maddipati KR, Elmarakby A, Rizk N, Al-Shabrawey M. 12/15-Lipoxygenase-derived lipid metabolites induce retinal endothelial cell barrier dysfunction: contribution of NADPH oxidase. PLoS One 2013; 8:e57254. [PMID: 23437353 PMCID: PMC3577708 DOI: 10.1371/journal.pone.0057254] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2012] [Accepted: 01/18/2013] [Indexed: 01/08/2023] Open
Abstract
The purpose of the current study was to evaluate the effect of 12/15- lipoxygenase (12/15-LOX) metabolites on retinal endothelial cell (REC) barrier function. FITC-dextran flux across the REC monolayers and electrical cell-substrate impedance sensing (ECIS) were used to evaluate the effect of 12- and 15-hydroxyeicosatetreanoic acids (HETE) on REC permeability and transcellular electrical resistance (TER). Effect of 12- or 15-HETE on the levels of zonula occludens protein 1 (ZO-1), reactive oxygen species (ROS), NOX2, pVEGF-R2 and pSHP1 was examined in the presence or absence of inhibitors of NADPH oxidase. In vivo studies were performed using Ins2Akita mice treated with or without the 12/15-LOX inhibitor baicalein. Levels of HETE and inflammatory mediators were examined by LC/MS and Multiplex Immunoassay respectively. ROS generation and NOX2 expression were also measured in mice retinas. 12- and 15- HETE significantly increased permeability and reduced TER and ZO-1expression in REC. VEGF-R2 inhibitor reduced the permeability effect of 12-HETE. Treatment of REC with HETE also increased ROS generation and expression of NOX2 and pVEGF-R2 and decreased pSHP1 expression. Treatment of diabetic mice with baicalein significantly decreased retinal HETE, ICAM-1, VCAM-1, IL-6, ROS generation, and NOX2 expression. Baicalein also reduced pVEGF-R2 while restored pSHP1 levels in diabetic retina. Our findings suggest that 12/15-LOX contributes to vascular hyperpermeability during DR via NADPH oxidase dependent mechanism which involves suppression of protein tyrosine phosphatase and activation of VEGF-R2 signal pathway.
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Affiliation(s)
- Amira Othman
- Department of Oral Biology/Anatomy, College of Dental Medicine, Georgia Regents University (GRU), Augusta, Georgia, United States of America
- Department of Anatomy, Mansoura University, Mansoura, Egypt
| | - Saif Ahmad
- Department of Ophthalmology and Vision Discovery Institute, Medical College of Georgia, Georgia Regents University (GRU), Augusta, Georgia, United States of America
| | - Sylvia Megyerdi
- Department of Oral Biology/Anatomy, College of Dental Medicine, Georgia Regents University (GRU), Augusta, Georgia, United States of America
| | - Rene Mussell
- Department of Oral Biology/Anatomy, College of Dental Medicine, Georgia Regents University (GRU), Augusta, Georgia, United States of America
| | - Karishma Choksi
- Department of Oral Biology/Anatomy, College of Dental Medicine, Georgia Regents University (GRU), Augusta, Georgia, United States of America
| | - Krishna Rao Maddipati
- Department of Pathology, Wayne States University, Detroit, Michigan, United States of America
| | - Ahmed Elmarakby
- Department of Oral Biology/Anatomy, College of Dental Medicine, Georgia Regents University (GRU), Augusta, Georgia, United States of America
- Vascular Biology Center, Medical College of Georgia, Georgia Regents University (GRU), Augusta, Georgia, United States of America
| | - Nasser Rizk
- Department of Health Sciences, College of Science, Qatar University, Doha, Qatar
| | - Mohamed Al-Shabrawey
- Department of Oral Biology/Anatomy, College of Dental Medicine, Georgia Regents University (GRU), Augusta, Georgia, United States of America
- Department of Anatomy, Mansoura University, Mansoura, Egypt
- Department of Ophthalmology and Vision Discovery Institute, Medical College of Georgia, Georgia Regents University (GRU), Augusta, Georgia, United States of America
- Vascular Biology Center, Medical College of Georgia, Georgia Regents University (GRU), Augusta, Georgia, United States of America
- * E-mail:
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Berlanga-Acosta J, Schultz GS, López-Mola E, Guillen-Nieto G, García-Siverio M, Herrera-Martínez L. Glucose toxic effects on granulation tissue productive cells: the diabetics' impaired healing. BIOMED RESEARCH INTERNATIONAL 2012; 2013:256043. [PMID: 23484099 PMCID: PMC3591209 DOI: 10.1155/2013/256043] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Accepted: 11/24/2012] [Indexed: 12/15/2022]
Abstract
Type 2 diabetes mellitus is a metabolic noncommunicable disease with an expanding pandemic magnitude. Diabetes predisposes to lower extremities ulceration and impairs the healing process leading to wound chronification. Diabetes also dismantles innate immunity favoring wound infection. Amputation is therefore acknowledged as one of the disease's complications. Hyperglycemia is the proximal detonator of systemic and local toxic effectors including proinflammation, acute-phase proteins elevation, and spillover of reactive oxygen and nitrogen species. Insulin axis deficiency weakens wounds' anabolism and predisposes to inflammation. The systemic accumulation of advanced glycation end-products irreversibly impairs the entire physiology from cells-to-organs. These factors in concert hamper fibroblasts and endothelial cells proliferation, migration, homing, secretion, and organization of a productive granulation tissue. Diabetic wound bed may turn chronically inflammed, procatabolic, and an additional source of circulating pro-inflammatory cytokines, establishing a self-perpetuating loop. Diabetic fibroblasts and endothelial cells may bear mitochondrial damages becoming prone to apoptosis, which impairs granulation tissue cellularity and perfusion. Endothelial progenitor cells recruitment and tubulogenesis are also impaired. Failure of wound reepithelialization remains a clinical challenge while it appears to be biologically multifactorial. Ulcer prevention by primary care surveillance, education, and attention programs is of outmost importance to reduce worldwide amputation figures.
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Affiliation(s)
- Jorge Berlanga-Acosta
- Tissue Repair and Cytoprotection Research Group, Center for Genetic Engineering and Biotechnology, Playa, CP 10600 Havana, Cuba.
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Guimarães DD, Carvalho CC, Braga VA. Scavenging of NADPH oxidase-derived superoxide anions improves depressed baroreflex sensitivity in spontaneously hypertensive rats. Clin Exp Pharmacol Physiol 2012; 39:373-8. [PMID: 22283703 DOI: 10.1111/j.1440-1681.2012.05679.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In pathological conditions, such as hypertension, there is impairment in the autonomic control of blood pressure resulting in changes in baroreflex sensitivity. In the present study we tested the hypothesis that acute superoxide scavenging would restore the depressed baroreflex sensitivity (BRS) in spontaneously hypertensive rats (SHR). Male 10-week-old SHR (n = 14) and their controls (Wistar-Kyoto (WKY) rats; n = 14) underwent femoral artery and vein catheterization for conscious blood pressure recording and drug administration. The BRS was obtained by the drug-induced method using phenylephrine (8 μg/kg, i.v.) and sodium nitroprusside (25 μg/kg, i.v.) before and after the administration of tiron (30 mg/kg, i.v.), a superoxide dismutase mimetic, or apocynin (30 μg/kg), an NADPH oxidase inhibitor. Spontaneously hypertensive rats was significantly hypertensive compared with WKY rats (160 ± 7 vs 105 ± 2 mmHg, respectively). However, there was no significant difference in heart rate between the two groups (388 ± 10 vs 370 ± 20 b.p.m.). In addition, SHR exhibited a diminished BRS compared with WKY rats (-1.34 ± 0.11 vs -2.91 ± 0.20 b.p.m./mmHg, respectively). Administration of tiron improved BRS in SHR (from -1.34 ± 0.11 to 2.26 ± 0.21 b.p.m./mmHg), as did apocynin (to -2.14 ± 0.23 b.p.m./mmHg). Serum samples from SHR (n = 20) and WKY rats (n = 20) were collected for thiobarbituric acid-reactive substances assays before and after tiron or apocynin to confirm the reduction in oxidative stress. There was considerably greater oxidative stress in SHR compared with WKY rats (36.2 ± 3.0 vs 13.3 ± 2.6 nmol/L, respectively). Both apocynin and tiron treatment reduced the oxidative stress in SHR (from 36.2 ± 3.0 to 21.5 ± 3.0 nmol/L and from 37.2 ± 3.9 to 21.9 ± 1.6 nmol/L, respectively). The data suggest that acute scavenging of NADPH oxidase-derived superoxide improves baroreflex sensitivity in SHR.
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Affiliation(s)
- D D Guimarães
- Biotechnology Center, Federal University of Paraíba, João Pessoa, Brazil
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Rindler PM, Plafker SM, Szweda LI, Kinter M. High dietary fat selectively increases catalase expression within cardiac mitochondria. J Biol Chem 2012. [PMID: 23204527 DOI: 10.1074/jbc.m112.412890] [Citation(s) in RCA: 112] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Obesity is a predictor of diabetes and cardiovascular disease. One consequence of obesity is dyslipidemia characterized by high blood triglycerides. It has been proposed that oxidative stress, driven by utilization of lipids for energy, contributes to these diseases. The effects of oxidative stress are mitigated by an endogenous antioxidant enzyme network, but little is known about its response to high fat utilization. Our experiments used a multiplexed quantitative proteomics method to measure antioxidant enzyme expression in heart tissue in a mouse model of diet-induced obesity. This experiment showed a rapid and specific up-regulation of catalase protein, with subsequent assays showing increases in activity and mRNA. Catalase, traditionally considered a peroxisomal protein, was found to be present in cardiac mitochondria and significantly increased in content and activity during high fat feeding. These data, coupled with the fact that fatty acid oxidation enhances mitochondrial H(2)O(2) production, suggest that a localized catalase increase is needed to consume excessive mitochondrial H(2)O(2) produced by increased fat metabolism. To determine whether the catalase-specific response is a common feature of physiological conditions that increase blood triglycerides and fatty acid oxidation, we measured changes in antioxidant expression in fasted versus fed mice. Indeed, a similar specific catalase increase was observed in mice fasted for 24 h. Our findings suggest a fundamental metabolic process in which catalase expression is regulated to prevent damage while preserving an H(2)O(2)-mediated sensing of diet composition that appropriately adjusts insulin sensitivity in the short term as needed to prioritize lipid metabolism for complete utilization.
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Affiliation(s)
- Paul M Rindler
- Free Radical Biology and Aging Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA
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Narne P, Ponnaluri KC, Singh S, Siraj M, Ishaq M. Relationship between NADPH oxidase p22phox C242T, PARP-1 Val762Ala polymorphisms, angiographically verified coronary artery disease and myocardial infarction in South Indian patients with type 2 diabetes mellitus. Thromb Res 2012; 130:e259-65. [DOI: 10.1016/j.thromres.2012.09.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2012] [Revised: 07/25/2012] [Accepted: 09/18/2012] [Indexed: 11/17/2022]
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50
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Quintela AM, Jiménez R, Gómez-Guzmán M, Zarzuelo MJ, Galindo P, Sánchez M, Vargas F, Cogolludo A, Tamargo J, Pérez-Vizcaíno F, Duarte J. Activation of peroxisome proliferator-activated receptor-β/-δ (PPARβ/δ) prevents endothelial dysfunction in type 1 diabetic rats. Free Radic Biol Med 2012; 53:730-41. [PMID: 22683600 DOI: 10.1016/j.freeradbiomed.2012.05.045] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 05/30/2012] [Accepted: 05/31/2012] [Indexed: 01/27/2023]
Abstract
Endothelial dysfunction plays a key role in the pathogenesis of diabetic vascular disease. Herein, we have analyzed if the peroxisome proliferator-activated receptor-β/-δ (PPARβ/δ) agonist GW0742 exerts protective effects on endothelial function in type 1 diabetic rats. The rats were divided into 4 groups: control, control-treated (GW0742, 5 mg kg(-1)day(-1) for 5 weeks), diabetic (streptozotocin injection), and diabetic-treated. GW0742 administration in diabetic rats did not alter plasma glucose, systolic blood pressure, or heart rate, but reduced plasma triglyceride levels. The vasodilatation induced by acetylcholine was decreased in aortas from diabetic rats. GW0742 restored endothelial function, increasing eNOS phosphorylation. Superoxide production, NADPH oxidase activity, and mRNA expression of prepro endothelin-1, p22(phox), p47(phox), and NOX-1 were significantly higher in diabetic aortas, and GW0742 treatment prevented these changes. In addition, GW0742 prevented the endothelial dysfunction and the upregulation of prepro endothelin-1 and p47(phox) after the in vitro incubation of aortic rings with high glucose and these effects were prevented by the PPARβ/δ antagonist GSK0660. PPARβ/δ activation restores endothelial function in type 1 diabetic rats. This effect seems to be related to an increase in nitric oxide bioavailability as a result of reduced NADPH oxidase-driven superoxide production and downregulation of prepro endothelin-1.
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Affiliation(s)
- Ana María Quintela
- Department of Pharmacology, School of Pharmacy, University of Granada, 18071 Granada, Spain
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