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Yang Y, Ma M, Zhang J, Jin S, Zhang D, Lin X. Triglyceride-glucose index in the prediction of clinical outcomes after successful recanalization for coronary chronic total occlusions. Cardiovasc Diabetol 2023; 22:304. [PMID: 37940976 PMCID: PMC10634094 DOI: 10.1186/s12933-023-02037-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/17/2023] [Indexed: 11/10/2023] Open
Abstract
BACKGROUND Triglyceride-glucose index (TyG) has been widely used to predict cardiovascular outcomes. However, it remains unclear whether TyG holds prognostic significance for patients with coronary chronic total occlusions (CTO). Thus, our study aimed to evaluate the predictive accuracy and prognostic value of TyG in individuals who underwent successful percutaneous coronary intervention (PCI) for CTO. METHODS A total of 331 consecutive patients with ≥ 1 successful CTO-PCI were included. The baseline and angiographic data were acquired. The duration of follow-up ranged from 32 to 79 months, with a median of 44 months and an interquartile range of 39 to 67 months. The primary outcome measured was the occurrence of major adverse cardiac and cerebrovascular events (MACCE), including mortality, target vessel revascularization, recurrent myocardial infarction, and stroke. RESULTS After controlling for confounders, multivariate Cox regression analysis revealed that TyG remained statistically significant, regardless of being a continuous or categorical variable. In the partially adjusted regression model, the Hazard ratio (95%CI) for MACCE was 2.54 (1.12-5.79) in tertile 3 and 1.61 (1.22-2.12) per SD increase in the TyG.Kaplan-Meier survival analysis demonstrated significant differences in MACCE-free survival rates across tertiles of the TyG, as indicated by the log-rank test (p = 0.001). ROC analysis was conducted to evaluate the predictive ability of TyG for MACCE, resulting in an AUC of 0.677. CONCLUSION The TyG index demonstrates independent predictive capabilities for MACCE in patients who have undergone successful CTO-PCI. These findings suggest that TyG holds the potential as a valuable tool in risk stratification and the identification of patients who may benefit from early intervention in the management of CTO.
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Affiliation(s)
- Yu Yang
- Department of cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei city, 230022, Anhui province, China
| | - Mengqing Ma
- Department of cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei city, 230022, Anhui province, China
| | - Jian Zhang
- Department of cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei city, 230022, Anhui province, China
| | - Shiyu Jin
- Department of cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei city, 230022, Anhui province, China
| | - Dingxin Zhang
- Department of cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei city, 230022, Anhui province, China
| | - Xianhe Lin
- Department of cardiology, The First Affiliated Hospital of Anhui Medical University, Hefei city, 230022, Anhui province, China.
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Yuan Y, Sun W, Kong X. Comparison between distinct insulin resistance indices in measuring the development of hypertension: The China Health and Nutrition Survey. Front Cardiovasc Med 2022; 9:912197. [PMID: 36277749 PMCID: PMC9582523 DOI: 10.3389/fcvm.2022.912197] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 09/15/2022] [Indexed: 11/15/2022] Open
Abstract
Aim Our aim was to identify the relationship between several surrogate insulin resistance (IR) indices based on lipid products and the development of hypertension. Materials and methods A total of 3,281 participants aged ≥ 18 years enrolled in the China Health and Nutrition Survey from 2009 to 2015 and who were followed up for 6 years were included in the final analysis. Logistic regression was used to analyze the association between different IR indices and incident hypertension. Results There were 882 (28.9%) hypertensive participants in 2015. With regard to the homeostasis model assessment of insulin resistance (HOMA-IR) based on insulin level, subjects in the highest quartile of HOMA-IR values were more likely to develop hypertension [RR = 1.58 (1.26–1.98), P < 0.001] after being adjusted by sex and age, smoke habits, alcohol consumption, community type, married status, and education years in 2009. Subjects in the highest quartile of the triglyceride-glucose index (TyG) combined with body mass index (BMI) and waist circumference (WC) had more than two times the risk of hypertension after full adjustment compared with individuals in the lowest quartile (both P < 0.001), and the trend continued when adjusted for the HOMA-IR. Compared with those in the lowest quartile of TyG-BMI values, females in the highest quartile had a higher risk of developing hypertension than males [2.82 (2.01–3.97) vs. 2.56 (1.80–3.64)] after the full adjustment, and the trend existed independent of IR. Young participants in the highest quartile of the HOMA-IR had significantly higher risks of hypertension compared with subjects in the lowest quartile [1.67 (1.31–2.14), P < 0.005], and this trend was not significant in the elderly participants. Conclusion The results from our large-scale study elucidate the superiority of the TyG-BMI and TyG-WC compared with the HOMA-IR in the prediction of hypertension, which may be related to lipid deposition. The sex-specific predictive value is distinct for different IR indicators.
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Affiliation(s)
- Yue Yuan
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China,Department of Cardiology, Nanjing Medical University, Nanjing, China
| | - Wei Sun
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China,Department of Cardiology, Nanjing Medical University, Nanjing, China,Wei Sun
| | - Xiangqing Kong
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China,Department of Cardiology, Nanjing Medical University, Nanjing, China,*Correspondence: Xiangqing Kong
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Zhang XH, Li Y, Zhou L, Tian GP. Interleukin-38 in atherosclerosis. Clin Chim Acta 2022; 536:86-93. [PMID: 36150521 DOI: 10.1016/j.cca.2022.09.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 09/15/2022] [Accepted: 09/15/2022] [Indexed: 11/25/2022]
Abstract
Chronic inflammation caused by immune cells and their mediators is a characteristic of atherosclerosis. Interleukin-38 (IL-38), a member of the IL-1 family, exerts multiple anti-inflammatory effects via specific ligand-receptor interactions. Upon recognizing a specific receptor, IL-38 restrains mitogen-activated protein kinase (MAPK), nuclear factor kappa B (NK-κB), or other inflammation-related signaling pathways in inflammatory disease. Further research has shown that IL-38 also displays anti-atherosclerotic effects and reduces the occurrence and risk of cardiovascular events. On the one hand, IL-38 can regulate innate and adaptive immunity to inhibit inflammation, reduce pathological neovascularization, and inhibit apoptosis. On the other hand, it can curb obesity, reduce hyperlipidemia, and restrain insulin resistance to reduce cardiovascular disease risk. Therefore, this article expounds on the vital function of IL-38 in the development of atherosclerosis to provide a theoretical basis for further in-depth studies of IL-38 and insights on the prophylaxis and treatment of atherosclerosis.
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Affiliation(s)
- Xiao-Hong Zhang
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yu Li
- Department of Orthopaedics, Wuhan Children's Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430016, China
| | - Li Zhou
- Department of Pathology, Chongqing Public Health Medical Center, Southwest University Public Health Hospital, Chongqing 400036, China.
| | - Guo-Ping Tian
- Department of Cardiovascular Medicine, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China.
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Guo W, Kim SH, Wu D, Li L, Ortega EF, Thomas M, Meydani SN, Meydani M. Dietary Fruit and Vegetable Supplementation Suppresses Diet-Induced Atherosclerosis in LDL Receptor Knockout Mice. J Nutr 2021; 151:902-910. [PMID: 33561256 DOI: 10.1093/jn/nxaa410] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 09/17/2020] [Accepted: 11/24/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Epidemiologic studies suggest that fruit and vegetable (F&V) consumption is inversely associated with incidence of cardiovascular disease (CVD). However, evidence for causality is lacking, and the underlying mechanisms are not well understood. OBJECTIVES We aimed to determine whether there is a causal relation between consuming high levels of F&V and prevention of atherosclerosis, the hallmark of CVD pathogenesis. Furthermore, the underlying mechanisms were determined. METHODS Six-week-old male LDL receptor-knockout mice were randomly assigned to 3 diet groups (12 mice/group) for 20 wk: control (CON, 10% kcal fat, 0.20 g/kg cholesterol), atherogenic (Ath, 27% kcal fat, 0.55 g/kg cholesterol), and Ath supplemented with 15% F&V (Ath + FV) (equivalent to 8-9 servings/d in humans). F&V was added as a freeze-dried powder that was prepared from the 24 most commonly consumed F&Vs in the United States. Body weight, aortic atherosclerotic lesion area, hepatic steatosis area, serum lipid profile and proinflammatory cytokine TNF-α concentrations, gut microbiota, and liver TNF-α and fatty acid synthase (Fasn) mRNA concentrations were assessed. RESULTS F&V supplementation did not affect weight gain. Mice fed the Ath + FV diet had a smaller aortic atherosclerotic lesion area (71.7% less) and hepatic steatosis area (80.7% less) than those fed the Ath diet (both P < 0.001) independent of impact on weight, whereas no difference was found between Ath + FV and CON groups in these 2 pathologic markers. Furthermore, F&V supplementation prevented Ath diet-induced dyslipidemia (high concentrations of serum TG and VLDL cholesterol and lower concentrations of HDL cholesterol), reduced serum TNF-α concentration (by 21.5%), suppressed mRNA expression of liver TNF-α and Fasn, and ameliorated Ath-induced gut microbiota dysbiosis. CONCLUSIONS Our results indicate that consuming a large quantity and variety of F&Vs causally attenuates diet-induced atherosclerosis and hepatic steatosis in mice. These effects of F&Vs are associated with, and may be mediated through, improved atherogenic dyslipidemia, alleviated gut dysbiosis, and suppressed inflammation.
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Affiliation(s)
- Weimin Guo
- Nutritional Immunology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Sharon H Kim
- Vascular Biology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Dayong Wu
- Nutritional Immunology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Lijun Li
- Nutritional Immunology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Edwin Frank Ortega
- Nutritional Immunology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Michael Thomas
- Vascular Biology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Simin Nikbin Meydani
- Nutritional Immunology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
| | - Mohsen Meydani
- Vascular Biology Laboratories, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
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Sexual Functioning in Hyperprolactinemic Patients Treated With Cabergoline or Bromocriptine. Am J Ther 2019; 26:e433-e440. [PMID: 29746287 DOI: 10.1097/mjt.0000000000000777] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND Elevated prolactin levels were found to be associated with impaired sexuality. STUDY QUESTION The aim of the study was to compare the impact of bromocriptine and cabergoline on sexual functioning in both genders. STUDY DESIGN The study enrolled 39 young women and 18 young men receiving bromocriptine treatment. In 19 women and 8 men, because of poor tolerance, bromocriptine was replaced with cabergoline, whereas the remaining ones continued bromocriptine treatment. MEASURES AND OUTCOMES Apart from measuring serum levels of prolactin and insulin sensitivity, at the beginning of the study and 16 weeks later, all included patients completed questionnaires evaluating female or male sexual functioning (Female Sexual Function Index; International Index of Erectile Function-15). RESULTS Irrespective of the gender, posttreatment prolactin levels were lower in cabergoline-treated patients than in bromocriptine-treated patients. Baseline sexual functioning did not differ between patients well and poorly tolerating bromocriptine treatment. Neither in men nor in women receiving bromocriptine, posttreatment sexual functioning differed from baseline one. In both genders, cabergoline improved sexual desire. Moreover, in men, the drug improved erectile and orgasmic function, whereas in women, it improved sexual arousal. All these effects correlated with the impact of this drug on prolactin levels and on insulin sensitivity. CONCLUSIONS Cabergoline is superior to bromocriptine in affecting male and female sexual functioning and should be preferred in hyperprolactinemic men and women with sexual dysfunction.
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Intermittent Hypoxia Composite Abnormal Glucose Metabolism-Mediated Atherosclerosis In Vitro and In Vivo: The Role of SREBP-1. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:4862760. [PMID: 30863480 PMCID: PMC6378806 DOI: 10.1155/2019/4862760] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 10/31/2018] [Indexed: 11/18/2022]
Abstract
Objective The aim of this study was to establish a 3T3-L1 adipocyte model and ApoE−/− mouse model of intermittent hypoxia (IH) composite abnormal glucose metabolism (AGM) in vitro and in vivo and explore their synergistic damage effect leading to atherosclerosis (AS) and the influence of SREBP-1 signaling molecule-related mechanisms. Methods Mature 3T3-L1 adipocytes were cultured with complete culture medium containing DEX 1 × 106 mol/L for 96 h to establish an AGM-3T3-L1 adipocyte model. Then, AGM-3T3-L1 adipocytes were treated with IH for 0 cycles, 2 cycles, 4 cycles, 8 cycles, 16 cycles, and 32 cycles and sustained hypoxia (SH). ApoE−/− mice were treated with high-fat diet and injection of STZ solution to establish an AGM-ApoE−/− mouse model. A total of 16 AGM-ApoE−/− mice were randomly and averagely divided into the normoxic control group (NC) and model group (CIH). AGM-ApoE−/− mice of the CIH group were treated with IH, which meant that the oxygen concentration fell to 10 ± 0.5% in the first 90 seconds of one cycle and then increased to 21 ± 0.5% in the later 90 seconds, continuous for eight hours per day (09 : 00-17 : 00) with a total of eight weeks. Eight C57BL/6J mice were used as the blank control group (Con) which was fed with conventional diet. qPCR and Western blotting were used to detect the expression level of SREBP-1c, FAS, and IRS-1. Oil Red O staining was used to compare the plaque of the aorta among each mouse group. Results As a result, within 32 cycles of IH, mRNA and protein expression levels of SREBP-1c and FAS in AGM-3T3-L1 adipocytes were elevated with the increase in IH cycles; the mRNA expression of IRS-1 was decreased after IH 32 cycles and lower than that of the SH group. For the study in vivo, Oil Red O staining showed a more obvious AS aortic plaque in the CIH group. After CIH treatment of 4 w and 8 w, fasting blood glucose (FBG) of the NC group and CIH group was higher than that of the Con group, and the insulin level of the CIH group was higher than that of the Con group after IH treatment of 8 w. The expressions of the IRS-1 mRNA level in the aorta, skeletal muscle, and liver of the CIH group were lower than those in the Con group. The mRNA and protein expression of SREBP-1c and its downstream molecule FAS in the aorta, skeletal muscle, and liver significantly enhanced in the CIH group in contrast with those in the Con group. Conclusion The CIH composite AGM could promote the progress of AS, which might be related to the modulation of the expression of SREBP-1-related molecular pathways.
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Cho SJ, Lee HJ, Rhee SJ, Kim EY, Kim KN, Yoon DH, Ahn YM. The relationship between visceral adiposity and depressive symptoms in the general Korean population. J Affect Disord 2019; 244:54-59. [PMID: 30316052 DOI: 10.1016/j.jad.2018.09.046] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Revised: 08/26/2018] [Accepted: 09/15/2018] [Indexed: 01/10/2023]
Abstract
BACKGROUND In Korea, depressive symptoms or depression are prevalent. Metabolic syndrome is the representative medical condition associated with depression. This study examined the association between clinically significant depressive symptoms and intra-abdominal fat, measured using abdominal computed tomography, in a large sample of the Korean population who underwent routine health examination. METHODS People who underwent routine health examinations at the Seoul National University Hospital Healthcare System, Gangnam Center, from October 2004 to July 2012 were included in the study. There were 11,434 cases of individuals with CT scan data and entries in the Beck Depression Inventory (BDI). Of these, 1156 men and women underwent CT scans more than once. In these cases, we analyzed the first scan. RESULTS We analyzed 4945 male and 2293 female participants; 333 participants (171 male, 162 female) were in the clinically depressed group. After controlling for confounding factors, we found that clinically depressive symptoms were associated with visceral adiposity in women. Per 1 cm2 of visceral adipose tissue area, the risk of being clinically depressed increased 1.006-fold. Similarly, per 1% increase in the ratio of visceral and total adipose tissue area in women, the risk increased 1.028-fold. CONCLUSIONS Our large-sample study showed depressive symptoms are associated with intra-abdominal fat and the ratio of visceral and total adipose area in women, after controlling for confounding factors including BMI, hypertension, and diabetes.
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Affiliation(s)
- Sung Joon Cho
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyun Jeong Lee
- Cancer Survivorship Branch, National Cancer Control Institute, Goyang, Republic of Korea
| | - Sang Jin Rhee
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea
| | - Eun Young Kim
- Department of Psychiatry and Behavioral Science, College of Medicine, Seoul National University, Seoul, Republic of Korea; Mental Health Center, Seoul National University Health Care Center, Seoul, Republic of Korea
| | - Kyoung-Nam Kim
- Division of Public Health and Preventive Medicine, Seoul National University Hospital, Seoul, Republic of Korea; Department of Preventive Medicine, Seoul National University, College of Medicine, Seoul, Republic of Korea
| | - Dae Hyun Yoon
- Department of Psychiatry, Seoul National University Hospital, Healthcare System Gangnam Center, Seoul, Republic of Korea.
| | - Yong Min Ahn
- Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea; Institute of Human Behavioral Medicine, Seoul National University, College of Medicine, Seoul, Republic of Korea.
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Salukhov VV, Khalimov YS, Shustov SB, Kadin DV. Decrease of cardiovascular risk in patients with type 2 diabetes: review of the common strategies and clinical studies. DIABETES MELLITUS 2018. [DOI: 10.14341/dm9570] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Military Medical Academy of S.M. Kirov, Saint-Petersburg, Russia
Recent clinical trials about the cardiovascular safety of empagliflozin and liraglutide demonstrated a convincing lowering effect on mortality from cardiovascular causes among the patients with type 2 diabetes. These findings resulted in many questions about why this phenomenon was seen in two drugs with widely different mechanisms of functioning. It is important to note that the glucose-lowering effect was moderate, although a feature seen in both empagliflozin and liraglutide was their ability to increase insulin sensitivity. In many fundamental studies, this feature was associated with a reduction of cardiovascular risks. Insulin resistance, which has always been a pathophysiological base for the development of cardiovascular disease in patients with type 2 diabetes, is a topic for this report. Different methods to manage insulin resistance, including lifestyle changes, drug treatment and metabolic surgery, are discussed. Furthermore, the most common features of glucose-lowering drugs are analysed, including protective effects for cardiovascular outcomes in patients with type 2 diabetes presented in randomised clinical trials. Studies include the United Kingdom Prospective Diabetes Study (UKPDS), PROspective pioglitAzone Clinical Trial In macroVascular Events (PROactive), Insulin Resistance Intervention After Stroke (IRIS), Liraglutide Effect and Action in Diabetes: Evaluation of Cardiovascular Outcome Results (LEADER) and the Empagliflozin Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients (EMPA-REG OUTCOME). The current study shows that the potential to reduce the risk of cardiovascular disease is determined not only by effective lowering of glucose but also by the ability to lower insulin resistance, which causes a paradigm shift in the management of type 2 diabetes.
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Cairns K, McCarvill T, Ruzickova M, Calkin CV. Course of bipolar illness worsens after onset of insulin resistance. J Psychiatr Res 2018; 102:34-37. [PMID: 29579625 DOI: 10.1016/j.jpsychires.2018.03.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/12/2018] [Accepted: 03/13/2018] [Indexed: 12/25/2022]
Abstract
Cross-sectional studies indicate that comorbid insulin resistance (IR) and type 2 diabetes are associated with a more severe course of bipolar disorder (BD); however, this relationship has not previously been assessed longitudinally. To address this, we reviewed health records of a case series of six patients with BD and comorbid IR. Severity and length of affective episodes (both mania and depression) over the lifetime were recorded using the Affective Morbidity Index; these data were obtained from ongoing prospective follow-up and from detailed retrospective chart reviews. All six patients with a previously episodic, relapsing-remitting course of illness experienced a worsening of morbidity after the onset of laboratory-demonstrated IR. These results suggest that IR may be a potential testable, modifiable factor in the progression of BD from a treatment responsive (episodic) to a non-responsive (chronic) course of illness.
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Affiliation(s)
- Kathleen Cairns
- Nova Scotia Health Authority, Abbie J. Lane Memorial Building, Room 3089, 5909 Veterans' Memorial Lane, Halifax, NS, B3H 2E2, Canada
| | - Terrence McCarvill
- Department of Psychiatry, Dalhousie University, Abbie J. Lane Memorial Building, Room 3094, 5909 Veterans' Memorial Lane, Halifax, NS, B3H 2E2, Canada; Operational Trauma/Stress Support Centre, Suite 210, 100 Eileen Stubbs Avenue, Dartmouth, NS, B3B 1Y6, Canada
| | - Martina Ruzickova
- Department of Psychiatry, Dalhousie University, Abbie J. Lane Memorial Building, Room 3094, 5909 Veterans' Memorial Lane, Halifax, NS, B3H 2E2, Canada
| | - Cynthia V Calkin
- Department of Psychiatry, Dalhousie University, Abbie J. Lane Memorial Building, Room 3094, 5909 Veterans' Memorial Lane, Halifax, NS, B3H 2E2, Canada; Department of Medical Neuroscience, Dalhousie University, Abbie J. Lane Memorial Building, Room 3095, 5909 Veterans' Memorial Lane, Halifax, NS, B3H 2E2, Canada.
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Fasting insulin, insulin resistance, and risk of cardiovascular or all-cause mortality in non-diabetic adults: a meta-analysis. Biosci Rep 2017; 37:BSR20170947. [PMID: 28811358 PMCID: PMC6448479 DOI: 10.1042/bsr20170947] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/24/2017] [Accepted: 07/26/2017] [Indexed: 12/27/2022] Open
Abstract
Studies on elevated fasting insulin or insulin resistance (IR) and cardiovascular
or all-cause mortality risk in non-diabetic individuals have yielded conflicting
results. This meta-analysis aimed to evaluate the association of elevated
fasting insulin levels or IR as defined by homeostasis model assessment of IR
(HOMA-IR) with cardiovascular or all-cause mortality in non-diabetic adults. We
searched for relevant studies in PubMed and Emabse databases until November
2016. Only prospective observational studies investigating the association of
elevated fasting insulin levels or HOMA-IR with cardiovascular or all-cause
mortality risk in non-diabetic adults were included. Risk ratio (RR) with its
95% confidence intervals (CIs) was pooled for the highest compared with the
lowest category of fasting insulin levels or HOMA-IR. Seven articles involving
26976 non-diabetic adults were included. The pooled, adjusted RR of all-cause
mortality comparing the highest with the lowest category was 1.13 (95% CI:
1.00–1.27; P=0.058) for fasting insulin levels and 1.34
(95% CI: 1.11–1.62; P=0.002) for HOMA-IR, respectively.
When comparing the highest with the lowest category, the pooled adjusted RR of
cardiovascular mortality was 2.11 (95% CI: 1.01–4.41;
P=0.048) for HOMA-IR in two studies and 1.40 (95% CI:
0.49–3.96; P=0.526) for fasting insulin levels in one
study. IR as measured by HOMA-IR but not fasting insulin appears to be
independently associated with greater risk of cardiovascular or all-cause
mortality in non-diabetic adults. However, the association of fasting insulin
and HOMA-IR with cardiovascular mortality may be unreliable due to the small
number of articles included.
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Şelli ME, Wick G, Wraith DC, Newby AC. Autoimmunity to HSP60 during diet induced obesity in mice. Int J Obes (Lond) 2016; 41:348-351. [PMID: 27899808 PMCID: PMC5300117 DOI: 10.1038/ijo.2016.216] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 10/18/2016] [Accepted: 11/13/2016] [Indexed: 02/06/2023]
Abstract
Adaptive immunity has been implicated in adipose tissue inflammation, obesity and its adverse metabolic consequences. No obesity-related autoantigen has yet been identified, although heat shock protein 60 (HSP60) has been implicated in other autoimmune diseases. We investigated whether feeding a high-fat diet to C57BL/6J mice would cause autoimmunity to HSP60 and whether immunomodulation with peptides from HSP60 would reverse the resulting obesity or metabolic dysfunction. Obese mice had higher circulating levels of HSP60 associated with increased T-lymphocyte proliferation responses and the emergence of circulating IgG1 and IgG2c antibody levels against HSP60. Treatment with escalating doses of a mixture of three proven immunomodulatory HSP60 peptides did not reduce weight but completely reversed the increase in VLDL/LDL levels and partially reversed the glucose intolerance in obese mice. Obese mice mount an autoimmune response to HSP60, which partly underlies the resulting metabolic disturbances.
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Affiliation(s)
- M E Şelli
- School of Clinical Sciences and Bristol Heart Institute, Bristol Royal Infirmary, University of Bristol, Bristol, UK
| | - G Wick
- Laboratory of Autoimmunity, Division for Experimental Pathology and Immunology, Biocenter Innsbruck Medical University, Innsbruck, Austria
| | - D C Wraith
- School of Cellular and Molecular Medicine, University of Bristol, Bristol, UK
| | - A C Newby
- School of Clinical Sciences and Bristol Heart Institute, Bristol Royal Infirmary, University of Bristol, Bristol, UK
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The effect of fenofibrate on cardiometabolic risk factors in bromocriptine-treated women with mixed dyslipidemia: A pilot study. Pharmacol Rep 2016; 68:185-9. [PMID: 26721371 DOI: 10.1016/j.pharep.2015.08.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 07/29/2015] [Accepted: 08/12/2015] [Indexed: 10/23/2022]
Abstract
BACKGROUND Elevated prolactin levels are associated with metabolic and hormonal complications. No previous study has investigated the effect of any fibrate on plasma levels of lipids and other cardiometabolic risk factors in patients receiving dopamine agonist therapy. METHODS The study included 36 premenopausal women with mixed dyslipidemia and slightly increased prolactin levels, 17 of whom had already been treated with bromocriptine (5.0-7.5mg daily). The included patients received micronized fenofibrate (200mg daily) for 6 months. Plasma lipids, glucose homeostasis markers, as well as plasma levels of prolactin, uric acid, high-sensitivity C-reactive protein (hsCRP), homocysteine and fibrinogen were determined before and after 12 weeks of fenofibrate therapy. RESULTS Insulin sensitivity was more expressed while baseline plasma levels of hsCRP and fibrinogen were lower in patients treated with bromocriptine than in women not receiving dopamine agonist therapy. Although fenofibrate improved plasma lipids and insulin sensitivity, as well as reduced plasma levels of the investigated cardiometabolic risk factors in both groups of patients, its action on HDL cholesterol, triglycerides, insulin sensitivity, hsCRP and fibrinogen was stronger in subjects receiving bromocriptine. Moreover, only in bromocriptine-naïve patients, fenofibrate increased plasma homocysteine. CONCLUSIONS Our study shows that the effect of fenofibrate on plasma lipids and circulating levels of cardiometabolic risk factors may be potentiated by bromocriptine treatment. They also suggest that hyperprolactinemic women with mixed dyslipidemia and early glucose metabolism abnormalities may receive the greatest benefits from concomitant treatment with a fibrate and bromocriptine.
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Calkin CV, Alda M. Insulin resistance in bipolar disorder: relevance to routine clinical care. Bipolar Disord 2015; 17:683-8. [PMID: 26308475 DOI: 10.1111/bdi.12330] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 07/24/2015] [Indexed: 12/29/2022]
Affiliation(s)
- Cynthia V Calkin
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
| | - Martin Alda
- Department of Psychiatry, Dalhousie University, Halifax, NS, Canada.,National Institute of Mental Health, Klecany, Czech Republic
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Xu RS. Pathogenesis of diabetic cerebral vascular disease complication. World J Diabetes 2015; 6:54-66. [PMID: 25685278 PMCID: PMC4317317 DOI: 10.4239/wjd.v6.i1.54] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2014] [Revised: 09/20/2014] [Accepted: 12/10/2014] [Indexed: 02/05/2023] Open
Abstract
Diabetes mellitus is one of the most potent independent risk factors for the development of diabetic cerebral vascular disease (CVD). Many evidences suggested that hyperglycemia caused excess free fatty acids, the loss of endothelium-derived nitric oxide, insulin resistance, the prothrombotic state, endothelial dysfunction, the abnormal release of endothelial vasoactivators, vascular smooth muscle dysfunction, oxidative stress, and the downregulation of miRs participated in vessel generation and recovery as well as the balance of endotheliocytes. In turn, these abnormalities, mainly via phosphatidylinositol 3 kinase, mitogen-activated protein kinase, polyol, hexosamine, protein kinase C activation, and increased generation of advanced glycosylation end products pathway, play an important role in inducing diabetic CVD complication. A deeper comprehension of pathogenesis producing diabetic CVD could offer base for developing new therapeutic ways preventing diabetic CVD complications, therefore, in the paper we mainly reviewed present information about the possible pathogenesis of diabetic CVD complication.
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Rhee SJ, Kim EY, Kim SH, Lee HJ, Kim B, Ha K, Yoon DH, Ahn YM. Subjective depressive symptoms and metabolic syndrome among the general population. Prog Neuropsychopharmacol Biol Psychiatry 2014; 54:223-30. [PMID: 24975752 DOI: 10.1016/j.pnpbp.2014.06.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 06/17/2014] [Accepted: 06/18/2014] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The evidence of the association between depression and metabolic syndrome is increasing, but the existence of sex differences in this association remains controversial. The aim of this study was to investigate the association between subjective depressive symptoms and metabolic syndrome and each of its components by sex in the Korean population. METHODS The study sample comprised 15,073 men and 15,034 women who underwent routine health examinations. They completed the Beck Depression Inventory for depressive symptoms, and medical examinations provided data regarding metabolic syndrome. Adjustments for age, marriage, cigarette smoking, alcohol use, exercise, education, cancer, stroke, angina, and thyroid disease were performed. The association between depressive symptoms and metabolic syndrome and each of its components was analyzed by multiple logistic regression. RESULTS In women, depressive symptoms were associated with metabolic syndrome (OR=1.35, 95% CI=1.11-1.64, p=0.002) and the high-density lipoprotein cholesterol component (OR=1.26, 95% CI=1.09-1.46, p=0.002) of metabolic syndrome. There was also an association between the severity of depressive symptoms and metabolic syndrome in women (OR=1.046, 95% CI=1.002-1.091, p=0.039). In men, depressive symptoms were inversely associated with the hypertension component of metabolic syndrome (OR=0.73, 95% CI=0.58-0.91, p=0.005). CONCLUSIONS Subjective depressive symptoms were associated with metabolic syndrome only in women. Further research should consider sex differences and dyslipidemia.
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Affiliation(s)
- Sang Jin Rhee
- Department of Psychiatry, Seoul National University Hospital, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
| | - Eun Young Kim
- Department of Psychiatry, Seoul National University Hospital, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
| | - Se Hyun Kim
- Institute of Human Behavioral Medicine, Medical Research Institute, Seoul National University, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
| | - Hyun Jeong Lee
- Department of Psychiatry, Seoul National University Hospital, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
| | - Bora Kim
- Department of Psychiatry, Seoul National University Hospital, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
| | - Kyooseob Ha
- Institute of Human Behavioral Medicine, Seoul National University College of Medicine, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea; Mood Disorders Clinic and Affective Neuroscience Laboratory, Department of Neuropsychiatry, Seoul National University Bundang Hospital, Seongnam, Gyeonggi 463-707, Republic of Korea
| | - Dae Hyun Yoon
- Department of Psychiatry, Seoul National University Hospital, Healthcare System Gangnam Center, Yeoksam-Dong, Gangnam-Gu, Seoul 135-984, Republic of Korea.
| | - Yong Min Ahn
- Department of Psychiatry, Seoul National University Hospital, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea; Institute of Human Behavioral Medicine, Seoul National University College of Medicine, Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea.
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Wang Z, Wang L, Fan H, Jiang W, Wang S, Gu Z, Wang T. Adapted low intensity ergometer aerobic training for early and severely impaired stroke survivors: a pilot randomized controlled trial to explore its feasibility and efficacy. J Phys Ther Sci 2014; 26:1449-54. [PMID: 25276034 PMCID: PMC4175255 DOI: 10.1589/jpts.26.1449] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/31/2014] [Indexed: 12/21/2022] Open
Abstract
[Purpose] To evaluate the feasibility and efficacy of adapted low intensity ergometer
aerobic training for early and severely impaired stroke survivors. [Subjects] The subjects
were forty-eight early stroke survivors. [Methods] Eligible subjects were recruited and
randomly assigned to an experimental group and a control group. Both groups participated
in comprehensive rehabilitation training. Low intensity aerobic training was only
performed by the experimental group. Outcome measures were the Fugl-Meyer motor score,
Barthel index, exercise test time, peak heart rate, plasma glucose level and serum lipid
profiles. [Results] Patients in the experimental group finished 88.6% of the total aerobic
training sessions prescribed. In compliant participants (adherence≥80%), aerobic training
significantly improved the Barthel index (from 40.1±21.1 to 79.2±14.2), Fugl-Meyer motor
score (from 26.4±19.4 to 45.4±12.7), exercise test time (from 12.2±3.62 min to
13.9±3.6 min), 2-hour glucose level (from 9.22±1.16 mmol/L to 7.21±1.36 mmol/L) and
homeostasis model of assessment for insulin resistence index (from 1.72±1.01 to
1.28±0.88). [Conclusion] Preliminary findings suggest that early and severely impaired
stroke patients may benefit from low intensity ergometer aerobic training.
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Affiliation(s)
- Zun Wang
- Rehabilitation Therapy Department, The Second Medical School of Nanjing University of Traditional Chinese Medicine, China
| | - Lei Wang
- Rehabilitation Therapy Department, The Second Medical School of Nanjing University of Traditional Chinese Medicine, China
| | - Hongjuan Fan
- Rehabilitation Therapy Department, The Second Medical School of Nanjing University of Traditional Chinese Medicine, China
| | - Wenjun Jiang
- Department of Rehabilitation Medicine, Affiliated Hospital of Jiangsu University, China
| | - Sheng Wang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, China
| | - Zhaohua Gu
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, China
| | - Tong Wang
- Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, China
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Krysiak R, Okopien B. Different Effects of Cabergoline and Bromocriptine on Metabolic and Cardiovascular Risk Factors in Patients with Elevated Prolactin Levels. Basic Clin Pharmacol Toxicol 2014; 116:251-6. [DOI: 10.1111/bcpt.12307] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 08/05/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Robert Krysiak
- Department of Internal Medicine and Clinical Pharmacology; Medical University of Silesia; Katowice Poland
| | - Bogusław Okopien
- Department of Internal Medicine and Clinical Pharmacology; Medical University of Silesia; Katowice Poland
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Gao X, Liu X, Xu J, Xue C, Xue Y, Wang Y. Dietary trimethylamine N-oxide exacerbates impaired glucose tolerance in mice fed a high fat diet. J Biosci Bioeng 2014; 118:476-81. [PMID: 24721123 DOI: 10.1016/j.jbiosc.2014.03.001] [Citation(s) in RCA: 238] [Impact Index Per Article: 23.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/19/2014] [Accepted: 03/02/2014] [Indexed: 12/13/2022]
Abstract
Trimethylamine N-oxide (TMAO) is an oxidation product of trimethylamine (TMA) and is present in many aquatic foods. Here, we investigated the effects of TMAO on glucose tolerance in high fat diet (HFD)-fed mice. Male C57BL/6 mice were randomly assigned to the control, high fat (HF), and TMAO groups. The HF group was fed a diet containing 25% fat, and the TMAO group was fed the HFD plus 0.2% TMAO for 4 weeks. After 3 weeks of feeding, oral glucose tolerance tests were performed. Dietary TMAO increased fasting insulin levels and homeostasis model assessment-estimated insulin resistance (HOMA-IR) and exacerbated the impaired glucose tolerance in HFD-fed mice. These effects were associated with the expression of genes related to the insulin signal pathway, glycogen synthesis, gluconeogenesis and glucose transport in liver. mRNA levels of the pro-inflammatory cytokine MCP-1 increased significantly and of the anti-inflammatory cytokine IL-10 greatly decreased in adipose tissue. Our results suggest that dietary TMAO exacerbates impaired glucose tolerance, obstructs the hepatic insulin signaling pathway, and causes adipose tissue inflammation in mice fed a high fat diet.
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Affiliation(s)
- Xiang Gao
- College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, China
| | - Xiaofang Liu
- College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, China
| | - Jie Xu
- College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, China
| | - Changhu Xue
- College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, China
| | - Yong Xue
- College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, China
| | - Yuming Wang
- College of Food Science and Engineering, Ocean University of China, No. 5, Yu Shan Road, Qingdao, Shandong Province 266003, China.
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Wang Z, Fan H, Wang L, Wang T. Effects of routine rehabilitation training on glucose tolerance among nondiabetic stroke patients: a pilot study. Intern Med 2014; 53:2051-6. [PMID: 25224186 DOI: 10.2169/internalmedicine.53.2205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE Impaired glucose tolerance (IGT) and diabetic glucose tolerance (DGT) are closely associated with vascular disease mortality and morbidity. This study was designed to determine whether routine stroke rehabilitation training can be used to improve the glucose status and whether IGT and DGT persist among nondiabetic stroke patients at discharge after such training. METHODS Eighty eligible subjects were evaluated using Oral Glucose Tolerance Tests (OGTTs) at entry and discharge at the rehabilitation medical departments of two large hospitals in China. Routine rehabilitation training was provided during hospitalization. The secondary outcome measurements were BMI, Fugl-Meyer motor score, Barthel index, HbA1c, triglycerides, HDL cholesterol and LDL cholesterol. Non-acute and nondiabetic stroke patients treated at the rehabilitation department. RESULTS Fifty-four patients had IGT or DGT at entry, while 61 patients exhibited abnormal glucose tolerance at discharge, accounting for 67.7% and 76.25% of all subjects respectively. The mean 2-hour plasma glucose level was 8.98 mmol/L at entry and 9.11 mmol/L at discharge. No changes were noted in the OGTT results or secondary outcomes after training (p>0.05), with the exceptions of significant improvements in the Fugl-Meyer motor score and Barthel index (p<0.05). CONCLUSION These preliminary results suggest that IGT and DGT are present at a high frequency among nondiabetic stroke patients both before and after routine rehabilitation training. Routine stroke rehabilitation training, which greatly improves functional outcomes, may have no effect on the incidence of abnormal glucose tolerance.
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Affiliation(s)
- Zun Wang
- Rehabilitation Department, The Second Medical School of Nanjing University of Traditional Chinese Medicine, China
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Effect of low-intensity ergometer aerobic training on glucose tolerance in severely impaired nondiabetic stroke patients. J Stroke Cerebrovasc Dis 2013; 23:e187-93. [PMID: 24231135 DOI: 10.1016/j.jstrokecerebrovasdis.2013.09.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 09/24/2013] [Accepted: 09/25/2013] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE To investigate whether low-intensity ergometer aerobic training has beneficial effect on glucose tolerance in nondiabetic patients with severely impaired stroke. METHODS Fifty-four severely impaired stroke survivors were recruited and randomly assigned to the experimental group and control group. They have no diabetes history with fasting plasma glucose less than 7 mmol/L. Both groups participated in a 6-week rehabilitation training program with low-intensity ergometer aerobic training added only in the experimental group 3 times per week. Primary outcome variables were fasting glucose, fasting insulin, 2-hour glucose, and homeostasis model assessment-insulin resistance (HOMA-IR) in oral glucose tolerance test before and after intervention. RESULTS Before intervention, 36 of 54 (66.7%) were diagnosed with impaired glucose status or diabetic glucose tolerance totally. The average 2-hour plasma glucose level was 9.14 ± 1.39 mmol/L. After intervention, aerobic training significantly improved fasting insulin (from 8.51 ± 2.01 μU/mL to 7.11 ± 2.02 μU/mL), 2-hour glucose level (from 9.13 ± 1.14 mmol/L to 7.22 ± 1.23 mmol/L), and HOMA-IR (from 1.62 ± 1.01 to 1.29 ± .79) in the intervention group compared with the control group (P < .05). Aerobic training also significantly improved their glucose tolerance state (P < .05). CONCLUSIONS Preliminary findings suggest that abnormal glucose tolerance may be highly present among severely impaired nondiabetic stroke patients and low-intensity ergometer aerobic training may have beneficial role in improving glucose tolerance.
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Xu R, Yang R, Hu H, Xi Q, Wan H, Wu Y. Diabetes alters the expression of partial vasoactivators in cerebral vascular disease susceptible regions of the diabetic rat. Diabetol Metab Syndr 2013; 5:63. [PMID: 24499567 PMCID: PMC3854485 DOI: 10.1186/1758-5996-5-63] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2013] [Accepted: 10/17/2013] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND The pathogenesis between cerebral vascular disease (CVD) and the endothelial dysfunction (ETD) remains elusive in diabetes. Therefore, we investigated the expression of partial vasoactivators which be closely relative to ETD in CVD susceptible brain regions in the diabetic rat. The aim was to search some possible pathogenesis. METHODS Diabetes was induced by a single intraperitoneal injection of streptozotocin and a high lipid/sugar diet. The expression of vasoactivators ET-1, CGRP, VCAM-1, ICAM-1 and P-selectin were assessed by immunohistochemical staining and measurement of optic density of positive cells in the frontal and temporal lobe, basal ganglia and thalamus at 4 weeks after establishment of the diabetic model. RESULTS The expression of ET-1, VCAM-1, ICAM-1 and P-selectin significantly increased and CGRP significantly decreased in the diabetic group, and the expression of these vasoactivators was significantly different among the frontal, temporal lobe, basal ganglia and thalamus, and among the emotion, splanchno-motor and neuroendocrine center in the diabetic group. CONCLUSIONS Diabetes alters the expression of partial vasoactivators in cerebral vascular disease susceptible regions of the diabetic rat. Therefore, we suggested that CVD complications in diabetes are partly caused by ETD via an imbalance expression of endothelial vasoactivators, which might be associated with dysfunction of emotion, autonomic nerve and endocrine center. However, further studies are warranted.
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Affiliation(s)
- Renshi Xu
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Rongwei Yang
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Huoyou Hu
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Qiujiang Xi
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Hui Wan
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
| | - Yuchen Wu
- Department of Neurology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, China
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Abstract
OBJECTIVE The aim of this review article is to discuss the epidemiological links between diabetes and cancer; the potential biological mechanisms linking diabetes, obesity and cancer; the risk of cancer associated with antidiabetic medications. METHODS The data discussed in this review were obtained from the American Association of Clinical Endocrinologists Consensus Conference on Diabetes and Cancer, held in New York, NY, USA, September 2012. RESULTS The results of these studies demonstrate a significant association between diabetes and the risk of multiple cancers, including hepatocellular, pancreatic, endometrial, colorectal, breast, kidney, bladder, gastric, and ovarian cancer, non-Hodgkin lymphoma, T cell lymphoma and leukemia. There are multiple potential biological mechanisms that may link type 2 diabetes, obesity and cancer. Insulin resistance and hyperinsulinemia may lead to direct activation of the insulin receptors on tumor cells and promote tumor growth. Other potential mechanisms include increased circulating, local or bioavailable insulin-like growth factor 1, hyperglycemia, dyslipidemia, increased circulating or local estrogen, adipokines and direct and indirect effects of inflammatory cytokines. Epidemiological studies have had conflicting results regarding the associations between various classes of antidiabetic medication and cancer development. Animal studies have demonstrated increased tumor growth with certain medications, but their relevance to humans is uncertain. Metformin may, however, have protective effects on cancer development and may improve survival in patients with cancer. CONCLUSION We describe the current understanding of the links among diabetes, antidiabetic medication and cancer risk. We highlight some of the issues that should be addressed in the future to prevent cancer development and death in those with diabetes.
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Affiliation(s)
- Emily J Gallagher
- Department of Medicine, Division of Endocrinology, Mt Sinai School of Medicine, New York, New York 10029-6574, USA
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