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Liu X, Su Y, Liu J, Liu D, Yu C. Inhibition of Th17 cell differentiation by aerobic exercise improves vasodilatation in diabetic mice. Clin Exp Hypertens 2024; 46:2373467. [PMID: 38963020 DOI: 10.1080/10641963.2024.2373467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2024] [Accepted: 06/21/2024] [Indexed: 07/05/2024]
Abstract
BACKGROUND Aortic endothelial diastolic dysfunction is an early complication of diabetes and the abnormal differentiation of Th17 cells is involved in the development of diabetes. However, the exact role of exercise on regulating the Th17 cells differentiation and the underlying molecular mechanisms remain to be elucidated in diabetic mice. METHODS db/db and db/m+ mice were randomly divided into exercise and sedentary groups. Mice in exercise group were exercised daily, 6 days/week, for 6 weeks and mice in sedentary groups were placed on a nonmoving treadmill for 6 weeks. Vascular endothelial function was measured via wire myograph and the frequencies of Th17 from peripheral blood in mice were assessed via flow cytometry. RESULTS Our data showed that exercise improved insulin resistance and aortic endothelial diastolic function in db/db mice. In addition, the proportion of Th17 cells and IL-17A level in peripheral blood of db/db mice were significantly increased, and exercise could promote Th17 cell differentiation and reduce IL-17A level. More importantly, STAT3 or ROR-γt inhibitors could promote Th17 cell differentiation in db/db mice, while exercise significantly down-regulated p-STAT3/ROR-γt signaling in db/db mice, suggesting that exercise regulated Th17 differentiation through STAT3/ROR-γt signaling. CONCLUSIONS This study demonstrated that exercise improved vascular endothelial function in diabetic mice via reducing Th17 cell differentiation through p-STAT3/ROR-γt pathway, suggesting exercise may be an important non-pharmacological intervention strategy for the treatment of diabetes-related vascular complications.
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Affiliation(s)
- Xiao Liu
- Department of Cardiology, Bishan Hospital of Chongqing Medical University, Chongqing, China
| | - Yidan Su
- Department of Cardiology, Bishan Hospital of Chongqing Medical University, Chongqing, China
| | - Jie Liu
- Department of Cardiology, Bishan Hospital of Chongqing Medical University, Chongqing, China
| | - Dawei Liu
- Department of Cardiology, Bishan Hospital of Chongqing Medical University, Chongqing, China
| | - Changqing Yu
- Department of Cardiology, Bishan Hospital of Chongqing Medical University, Chongqing, China
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Qian Z, Ping L, Dongming X, Xuelin Z. Slow-velocity eccentric-only resistance training improves symptoms of type 2 diabetic mellitus patients by regulating plasma MMP-2 and -9. Medicine (Baltimore) 2024; 103:e38855. [PMID: 39029066 PMCID: PMC11398826 DOI: 10.1097/md.0000000000038855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 07/21/2024] Open
Abstract
OBJECTIVE This study investigated the intervention effect of slow-velocity eccentric-only resistance training on type 2 diabetic mellitus (T2DM) patients based on the role of matrix metalloproteinase-2 and -9 (MMP-2 and -9) in regulating extracellular matrix homeostasis. METHODS 50 T2DM patients were randomly divided into the slow-velocity eccentric-only resistance training group (E) and control group (C). The E group performed eccentric-only resistance training 3 times a week, every other day for 10 weeks, while the C group did not. Blood samples were collected before and after training, and subjects were tested for changes in clinical parameters, insulin resistance indices [fasting insulin, homeostatic model assessment insulin resistance (HOMA-IR)], MMP-2 and -9, and hydroxyproline, and muscle strength (12-RM), respectively. RESULTS After 10 weeks of training, the E group showed significant decreases in fasting glucose (P < .05), insulin (P < .05), insulin resistance indices (P < .05), hemoglobin A1c (HbA1c) (P < .01), triglycerides (P = .06) and MMP-2 (P < .05), while total cholesterol (P < .05), MMP-9 (P < .05), hydroxyproline (P < .01), Creatine Kinase (CK) (P < .05), and muscle strength (P < .001) significantly increased. There were no significant changes in the count of neutrophil, lymphocyte and platelet, neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), high-density lipoprotein cholesterol (HDL-c), and low-density lipoprotein cholesterol (LDL-c). Compared with the C group, the E group showed a trend of a significant decrease in triglyceride (P < .05), lymphocyte count (P < .05), fasting glucose (P = .07), and plasma MMP-2 (P < .05), while MMP-9 (P < .05), hydroxyproline (P < .001), and muscle strength (P < .01) significantly increased. However, no significant changes were observed in insulin and insulin resistance indices, HbA1c, total cholesterol, HDL-c, LDL-c, CK, and other inflammatory indicators. CONCLUSIONS Slow-velocity eccentric-only resistance training was beneficial for T2DM, but the potential role of MMP-2 and -9 in regulating extracellular matrix homeostasis is very different in T2DM patients.
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Affiliation(s)
- Zhao Qian
- College of Physical Education, Qufu Normal University, Qufu, China
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Storck K, Ussar S, Kotz S, Altun I, Hu F, Birk A, Veit J, Kovacevic M. Characterization of Fat Used for the Optimization of the Soft Tissue Envelope of the Nose in Rhinoplasty. Facial Plast Surg 2024. [PMID: 38688299 DOI: 10.1055/s-0044-1786185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024] Open
Abstract
Septorhinoplasty (SRP) is one of the most common aesthetic procedures worldwide. A thin or scarred soft tissue envelope, especially in the context of secondary SRP, can lead to unpredictable scarring, shrinkage, and discoloration of the skin. Other than the careful preparation of the soft tissue mantle, no gold standard exists to minimize the above-mentioned risks. Our aim was to create a thin "separation layer" between the nasal bridge (osseous and cartilaginous) and the skin envelope by autologous fat transfer with the addition of platelet-rich fibrin (PRF) to conceal small irregularities, to improve the quality of the skin soft tissue mantle, and to optimize the mobility of the skin. We report 21 patients who underwent SRP on a voluntary basis. All patients had either thin skin and/or revision SRP with scarring. Macroscopic fat harvested from the periumbilical or rib region was minced and purified. PRF was obtained by centrifugation of autologous whole blood samples and mixed with the fat to form a graft, which was then transferred to the nasal dorsum. Postoperative monitoring of graft survival included sonography and magnetic resonance imaging (MRI) of the nose. The harvested adipose tissue was also analyzed in vitro. In the postoperative follow-up after 1 year, survival of the adipose tissue was demonstrated in all patients by both sonography and MRI. The in vitro analysis showed interindividual differences in the quantity, size, and quality of the transplanted adipocytes. Camouflage of the nasal bridge by using adipose tissue was beneficial for the quality of the skin soft tissue mantle and hence represents a good alternative to known methods. Future aims include the ability to assess the quality of adipose tissue to be transplanted based on clinical parameters. Level of evidence: N/A.
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Affiliation(s)
- Katharina Storck
- Department of Otorhinolaryngology, Head and Neck Surgery, Klinikum Rechts der Isar, TU Munich, Munich, Germany
| | - Siegfried Ussar
- Research Unit Adipocytes and Metabolism (ADM), Institute for Diabetes and Obesity at Helmholtz Center Munich, Neuherberg, Germany
| | - Sebastian Kotz
- Department of Otorhinolaryngology, Head and Neck Surgery, Klinikum Rechts der Isar, TU Munich, Munich, Germany
| | - Irem Altun
- Research Unit Adipocytes and Metabolism (ADM), Institute for Diabetes and Obesity at Helmholtz Center Munich, Neuherberg, Germany
| | - Fiona Hu
- Research Unit Adipocytes and Metabolism (ADM), Institute for Diabetes and Obesity at Helmholtz Center Munich, Neuherberg, Germany
| | - Amelie Birk
- Department of Otorhinolaryngology, Head and Neck Surgery, Klinikum Rechts der Isar, TU Munich, Munich, Germany
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Dlamini M, Khathi A. Investigating the Effects of Diet-Induced Prediabetes on Skeletal Muscle Strength in Male Sprague Dawley Rats. Int J Mol Sci 2024; 25:4076. [PMID: 38612885 PMCID: PMC11012655 DOI: 10.3390/ijms25074076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/01/2024] [Accepted: 04/02/2024] [Indexed: 04/14/2024] Open
Abstract
Type 2 diabetes mellitus, a condition preceded by prediabetes, is documented to compromise skeletal muscle health, consequently affecting skeletal muscle structure, strength, and glucose homeostasis. A disturbance in skeletal muscle functional capacity has been demonstrated to induce insulin resistance and hyperglycemia. However, the modifications in skeletal muscle function in the prediabetic state are not well elucidated. Hence, this study investigated the effects of diet-induced prediabetes on skeletal muscle strength in a prediabetic model. Male Sprague Dawley rats were randomly assigned to one of the two groups (n = 6 per group; six prediabetic (PD) and six non-pre-diabetic (NPD)). The PD group (n = 6) was induced with prediabetes for 20 weeks. The diet that was used to induce prediabetes consisted of fats (30% Kcal/g), proteins (15% Kcal/g), and carbohydrates (55% Kcal/g). In addition to the diet, the experimental animals (n = 6) were supplied with drinking water that was supplemented with 15% fructose. The control group (n = 6) was allowed access to normal rat chow, consisting of 35% carbohydrates, 30% protein, 15% fats, and 20% other components, as well as ordinary tap water. At the end of week 20, the experimental animals were diagnosed with prediabetes using the American Diabetes Association (ADA) prediabetes impaired fasting blood glucose criteria (5.6-6.9 mmol/L). Upon prediabetes diagnosis, the animals were subjected to a four-limb grip strength test to assess skeletal muscle strength at week 20. After the grip strength test was conducted, the animals were euthanized for blood and tissue collection to analyze glycated hemoglobin (HbA1c), plasma insulin, and insulin resistance using the homeostatic model of insulin resistance (HOMA-IR) index and malondialdehyde (MDA) concentration. Correlation analysis was performed to examine the associations of skeletal muscle strength with HOMA-IR, plasma glucose, HbA1c, and MDA concentration. The results demonstrated increased HbA1c, FBG, insulin, HOMA-IR, and MDA concentrations in the PD group compared to the NPD group. Grip strength was reduced in the PD group compared to the NPD group. Grip strength was negatively correlated with HbA1c, plasma glucose, HOMA-IR, and MDA concentration in the PD group. These observations suggest that diet-induced prediabetes compromises muscle function, which may contribute to increased levels of sedentary behavior during prediabetes progression, and this may contribute to the development of hyperglycemia in T2DM.
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Affiliation(s)
| | - Andile Khathi
- Department of Human Physiology, School of Laboratory Medicine, Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban X54001, South Africa;
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Qiu B, Zhou Y, Tao X, Hou X, Du L, Lv Y, Yu L. The effect of exercise on flow-mediated dilation in people with type 2 diabetes mellitus: a systematic review and meta-analysis of randomized controlled trials. Front Endocrinol (Lausanne) 2024; 15:1347399. [PMID: 38596227 PMCID: PMC11002232 DOI: 10.3389/fendo.2024.1347399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/11/2024] [Indexed: 04/11/2024] Open
Abstract
Introduction An increasing number of studies have investigated the effect of exercise on flow-mediated dilation (FMD) in people with type 2 diabetes mellitus (T2DM), while the findings were controversial. The primary aim of this systematic review and meta-analysis was to investigate the effect of exercise on FMD in T2DM patients, and the secondary aim was to investigate the optimal type, frequency, session duration, and weekly time of exercise for T2DM patients. Methods Searches were conducted in PubMed, Cochrane Library, Scopus, Web of Science, Embase and EBSCO databases. The Cochrane risk of bias tool (RoB2) in randomized trial and Physiotherapy Evidence Database (PEDro) scale were used to assess the methodological quality of the included studies. Results From the 3636 search records initially retrieved, 13 studies met the inclusion criteria. Our meta-analysis revealed that exercise had a significant effect on improving FMD in T2DM patients [WMD, 2.18 (95% CI, 1.78-2.58), p < 0.00001, I2 = 38%], with high-intensity interval training (HIIT) being the most effective intervention type [HIIT, 2.62 (1.42-3.82); p < 0.0001; aerobic exercise, 2.20 (1.29-3.11), p < 0.00001; resistance exercise, 1.91 (0.01-3.82), p = 0.05; multicomponent training, 1.49 (0.15-2.83), p = 0.03]. In addition, a higher frequency [> 3 times, 3.06 (1.94-4.19), p < 0.00001; ≤ 3 times, 2.02 (1.59-2.45), p < 0.00001], a shorter session duration [< 60 min, 3.39 (2.07-4.71), p < 0.00001; ≥ 60 min, 1.86 (1.32-2.40), p < 0.00001], and a shorter weekly time [≤ 180 min, 2.40 (1.63-3.17), p < 0.00001; > 180 min, 2.11 (0.82-3.40), p = 0.001] were associated with larger improvements in FMD. Conclusion This meta-analysis provides clinicians with evidence to recommended that T2DM patients participate in exercise, especially HIIT, more than 3 times per week for less than 60 min, with a target of 180 min per week being reached by increasing the frequency of exercise. Systematic review registration https://www.crd.york.ac.uk/prospero, identifier CRD42023466575.
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Affiliation(s)
- Bopeng Qiu
- Department of Strength and Conditioning Assessment and Monitoring, Beijing Sport University, Beijing, China
| | - Yilun Zhou
- Department of Strength and Conditioning Assessment and Monitoring, Beijing Sport University, Beijing, China
| | - Xifeng Tao
- Department of Strength and Conditioning Assessment and Monitoring, Beijing Sport University, Beijing, China
- School of Physical Education, Xihua University, Chengdu, China
| | - Xiao Hou
- School of Sport Sciences, Beijing Sport University, Beijing, China
| | - Liwen Du
- Department of Strength and Conditioning Assessment and Monitoring, Beijing Sport University, Beijing, China
| | - Yuanyuan Lv
- China Institute of Sport and Health Science, Beijing Sport University, Beijing, China
| | - Laikang Yu
- Department of Strength and Conditioning Assessment and Monitoring, Beijing Sport University, Beijing, China
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Dlamini M, Khathi A. Prediabetes-Associated Changes in Skeletal Muscle Function and Their Possible Links with Diabetes: A Literature Review. Int J Mol Sci 2023; 25:469. [PMID: 38203642 PMCID: PMC10778616 DOI: 10.3390/ijms25010469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/19/2023] [Accepted: 12/20/2023] [Indexed: 01/12/2024] Open
Abstract
The skeletal muscle plays a critical role in regulating systemic blood glucose homeostasis. Impaired skeletal muscle glucose homeostasis associated with type 2 diabetes mellitus (T2DM) has been observed to significantly affect the whole-body glucose homeostasis, thereby resulting in other diabetic complications. T2DM does not only affect skeletal muscle glucose homeostasis, but it also affects skeletal muscle structure and functional capacity. Given that T2DM is a global health burden, there is an urgent need to develop therapeutic medical therapies that will aid in the management of T2DM. Prediabetes (PreDM) is a prominent risk factor of T2DM that usually goes unnoticed in many individuals as it is an asymptomatic condition. Hence, research on PreDM is essential because establishing diabetic biomarkers during the prediabetic state would aid in preventing the development of T2DM, as PreDM is a reversible condition if it is detected in the early stages. The literature predominantly documents the changes in skeletal muscle during T2DM, but the changes in skeletal muscle during prediabetes are not well elucidated. In this review, we seek to review the existing literature on PreDM- and T2DM-associated changes in skeletal muscle function.
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Affiliation(s)
| | - Andile Khathi
- Department of Human Physiology, School of Laboratory Medicine and Medical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban X54001, South Africa;
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7
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Zhou Q, Yang J, Tang H, Guo Z, Dong W, Wang Y, Meng X, Zhang K, Wang W, Shao C, Hua X, Tang YD. High triglyceride-glucose (TyG) index is associated with poor prognosis of heart failure with preserved ejection fraction. Cardiovasc Diabetol 2023; 22:263. [PMID: 37775762 PMCID: PMC10541699 DOI: 10.1186/s12933-023-02001-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 09/20/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND The impact of insulin resistance on the prognosis of heart failure with preserved ejection fraction (HFpEF) remains unknown. This study aimed to investigate the association between the triglyceride-glucose (TyG) index, an easily calculated marker of insulin resistance, and the long-term prognosis of HFpEF. METHODS A total of 823 patients with HFpEF were enrolled in the study. The TyG index was determined using the formula ln(fasting triglycerides [mg/dL] × fasting glucose [mg/dL]/2). The primary endpoint was all-cause death. The secondary endpoints were cardiovascular (CV) death and heart failure (HF) rehospitalization. Restricted cubic spline, multivariate Cox proportional hazard models, and competing risk models were used for analyses. RESULTS During a median follow-up period of 3.16 years, 147 (17.8%) all-cause deaths, 139 (16.8%) CV deaths, and 222 (27.0%) HF rehospitalizations occurred. Restricted cubic spline analysis revealed a J-shaped association between the TyG index and the mortality and rehospitalization rates. In the multivariate Cox proportional hazard models, compared with those in the lowest TyG index tertile, patients in the highest tertile exhibited the greatest susceptibility to all-cause death (HR 1.53, 95% CI 1.19-1.98) and CV death (HR 1.52, 95% CI 1.19-1.96). In the competing risk model, a significant association between the TyG index and HF rehospitalization was observed (HR 1.31, 95% CI, 1.07-1.61). CONCLUSION A high TyG index is associated with an increased risk of mortality and rehospitalization in patients with HFpEF. The TyG index may serve as a promising prognostic marker for patients with HFpEF.
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Affiliation(s)
- Qing Zhou
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Graduate School of Peking Union Medical College, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Jie Yang
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Hongyi Tang
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
- Department of Orthodontics, Peking University School and Hospital of Stomatology, Beijing, 100034, China
| | - Zexuan Guo
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Wenyue Dong
- School of Basic Medical Sciences, Peking University, Beijing, 100091, China
| | - Yiting Wang
- School of Basic Medical Sciences, Peking University, Beijing, 100091, China
| | - Xiangbin Meng
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Kuo Zhang
- Department of Cardiology, State Key Laboratory of Cardiovascular Disease, Graduate School of Peking Union Medical College, National Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, China
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Wenyao Wang
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Chunli Shao
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China
| | - Xinwei Hua
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China.
| | - Yi-Da Tang
- Department of Cardiology, Institute of Vascular Medicine, State Key Laboratory of Vascular Homeostasis and Remodeling, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University Third Hospital, Peking University, Peking University, Beijing, 100191, China.
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Khapchaev AY, Antonova OA, Kazakova OA, Samsonov MV, Vorotnikov AV, Shirinsky VP. Long-Term Experimental Hyperglycemia Does Not Impair Macrovascular Endothelial Barrier Integrity and Function in vitro. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1126-1138. [PMID: 37758312 DOI: 10.1134/s0006297923080072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 07/08/2023] [Accepted: 07/11/2023] [Indexed: 10/03/2023]
Abstract
Hyperglycemia is a hallmark of type 2 diabetes implicated in vascular endothelial dysfunction and cardiovascular complications. Many in vitro studies identified endothelial apoptosis as an early outcome of experimentally modeled hyperglycemia emphasizing cell demise as a significant factor of vascular injury. However, endothelial apoptosis has not been observed in vivo until the late stages of type 2 diabetes. Here, we studied the long-term (up to 4 weeks) effects of high glucose (HG, 30 mM) on human umbilical vein endothelial cells (HUVEC) in vitro. HG did not alter HUVEC monolayer morphology, ROS levels, NO production, and exerted minor effects on the HUVEC apoptosis markers. The barrier responses to various clues were indistinguishable from those by cells cultured in physiological glucose (5 mM). Tackling the key regulators of cytoskeletal contractility and endothelial barrier revealed no differences in the histamine-induced intracellular Ca2+ responses, nor in phosphorylation of myosin regulatory light chain or myosin light chain phosphatase. Altogether, these findings suggest that vascular endothelial cells may well tolerate HG for relatively long exposures and warrant further studies to explore mechanisms involved in vascular damage in advanced type 2 diabetes.
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Affiliation(s)
- Asker Y Khapchaev
- Institute of Experimental Cardiology, Chazov National Medical Research Center for Cardiology, Moscow, 121552, Russia.
| | - Olga A Antonova
- Institute of Experimental Cardiology, Chazov National Medical Research Center for Cardiology, Moscow, 121552, Russia
| | - Olga A Kazakova
- Institute of Experimental Cardiology, Chazov National Medical Research Center for Cardiology, Moscow, 121552, Russia
| | - Mikhail V Samsonov
- Institute of Experimental Cardiology, Chazov National Medical Research Center for Cardiology, Moscow, 121552, Russia
| | - Alexander V Vorotnikov
- Institute of Experimental Cardiology, Chazov National Medical Research Center for Cardiology, Moscow, 121552, Russia
| | - Vladimir P Shirinsky
- Institute of Experimental Cardiology, Chazov National Medical Research Center for Cardiology, Moscow, 121552, Russia
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Bestepe F, Fritsche C, Lakhotiya K, Niosi CE, Ghanem GF, Martin GL, Pal-Ghosh R, Becker-Greene D, Weston J, Hollan I, Risnes I, Rynning SE, Solheim LH, Feinberg MW, Blanton RM, Icli B. Deficiency of miR-409-3p improves myocardial neovascularization and function through modulation of DNAJB9/p38 MAPK signaling. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 32:995-1009. [PMID: 37332476 PMCID: PMC10276151 DOI: 10.1016/j.omtn.2023.05.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 05/17/2023] [Indexed: 06/20/2023]
Abstract
Angiogenesis is critical for tissue repair following myocardial infarction (MI), which is exacerbated under insulin resistance or diabetes. MicroRNAs are regulators of angiogenesis. We examined the metabolic regulation of miR-409-3p in post-infarct angiogenesis. miR-409-3p was increased in patients with acute coronary syndrome (ACS) and in a mouse model of acute MI. In endothelial cells (ECs), miR-409-3p was induced by palmitate, while vascular endothelial growth factor (VEGF) and fibroblast growth factor (FGF) decreased its expression. Overexpression of miR-409-3p decreased EC proliferation and migration in the presence of palmitate, whereas inhibition had the opposite effects. RNA sequencing (RNA-seq) profiling in ECs identified DNAJ homolog subfamily B member 9 (DNAJB9) as a target of miR-409-3p. Overexpression of miR-409-3p decreased DNAJB9 mRNA and protein expression by 47% and 31% respectively, while enriching DNAJB9 mRNA by 1.9-fold after Argonaute2 microribonucleoprotein immunoprecipitation. These effects were mediated through p38 mitogen-activated protein kinase (MAPK). Ischemia-reperfusion (I/R) injury in EC-specific miR-409-3p knockout (KO) mice (miR-409ECKO) fed a high-fat, high-sucrose diet increased isolectin B4 (53.3%), CD31 (56%), and DNAJB9 (41.5%). The left ventricular ejection fraction (EF) was improved by 28%, and the infarct area was decreased by 33.8% in miR-409ECKO compared with control mice. These findings support an important role of miR-409-3p in the angiogenic EC response to myocardial ischemia.
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Affiliation(s)
- Furkan Bestepe
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Colette Fritsche
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Kartik Lakhotiya
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Carolyn E. Niosi
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - George F. Ghanem
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Gregory L. Martin
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Ruma Pal-Ghosh
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Dakota Becker-Greene
- Cardiovascular Division, Department of Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - James Weston
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Ivana Hollan
- Department of Health Sciences, Norwegian University of Science and Technology, Gjøvik, Norway
| | - Ivar Risnes
- Department of Cardiac Surgery, LHL Hospital Gardermoen, Jessheim, Norway
| | - Stein Erik Rynning
- Department of Heart Diseases, Haukeland University Hospital, Bergen, Norway
| | | | - Mark W. Feinberg
- Cardiovascular Division, Department of Medicine, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Robert M. Blanton
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
| | - Basak Icli
- Molecular Cardiology Research Institute, Department of Medicine, Tufts Medical Center, Boston, MA 02111, USA
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Zhang X, Duan Y, Zhang X, Jiang M, Man W, Zhang Y, Wu D, Zhang J, Song X, Li C, Lin J, Sun D. Adipsin alleviates cardiac microvascular injury in diabetic cardiomyopathy through Csk-dependent signaling mechanism. BMC Med 2023; 21:197. [PMID: 37237266 DOI: 10.1186/s12916-023-02887-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/29/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND Microvascular complications are associated with an overtly increased risk of adverse outcomes in patients with diabetes including coronary microvascular injury which manifested as disruption of adherens junctions between cardiac microvascular endothelial cells (CMECs). However, particular mechanism leading to diabetic coronary microvascular hyperpermeability remains elusive. METHODS Experimental diabetes was induced in mice with adipose tissue-specific Adipsin overexpression (AdipsinLSL/LSL-Cre) and their respective control (AdipsinLSL/LSL). In addition, cultured CMECs were subjected to high glucose/palmitic acid (HG + PA) treatment to simulate diabetes for a mechanistic approach. RESULTS The results showed that Adipsin overexpression significantly reduced cardiac microvascular permeability, preserved coronary microvascular integrity, and increased coronary microvascular density. Adipsin overexpression also attenuated cardiac dysfunction in diabetic mice. E/A ratio, an indicator of cardiac diastolic function, was improved by Adipsin. Adipsin overexpression retarded left ventricular adverse remodeling, enhanced LVEF, and improved cardiac systolic function. Adipsin-enriched exosomes were taken up by CMECs, inhibited CMECs apoptosis, and increased CMECs proliferation under HG + PA treatment. Adipsin-enriched exosomes also accelerated wound healing, rescued cell migration defects, and promoted tube formation in response to HG + PA challenge. Furthermore, Adipsin-enriched exosomes maintained adherens junctions at endothelial cell borders and reversed endothelial hyperpermeability disrupted by HG + PA insult. Mechanistically, Adipsin blocked HG + PA-induced Src phosphorylation (Tyr416), VE-cadherin phosphorylation (Tyr685 and Tyr731), and VE-cadherin internalization, thus maintaining CMECs adherens junctions integrity. LC-MS/MS analysis and co-immunoprecipitation analysis (Co-IP) unveiled Csk as a direct downstream regulator of Adipsin. Csk knockdown increased Src phosphorylation (Tyr416) and VE-cadherin phosphorylation (Tyr685 and Tyr731), while abolishing Adipsin-induced inhibition of VE-cadherin internalization. Furthermore, Csk knockdown counteracted Adipsin-induced protective effects on endothelial hyperpermeability in vitro and endothelial barrier integrity of coronary microvessels in vivo. CONCLUSIONS Together, these findings favor the vital role of Adipsin in the regulation of CMECs adherens junctions integrity, revealing its promises as a treatment target against diabetic coronary microvascular dysfunction. Graphical abstract depicting the mechanisms of action behind Adipsin-induced regulation of diabetic coronary microvascular dysfunction.
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Affiliation(s)
- Xuebin Zhang
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yu Duan
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xiao Zhang
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Mengyuan Jiang
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Wanrong Man
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Yan Zhang
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Dexi Wu
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jiye Zhang
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Xinglong Song
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Congye Li
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China
| | - Jie Lin
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
| | - Dongdong Sun
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi'an, China.
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Abdel-Megeed RM, Kadry MO. Amelioration of autophagy and inflammatory signaling pathways via α-lipoic acid, burdock and bee pollen versus lipopolysaccharide-induced insulin resistance in murine model. Heliyon 2023; 9:e15692. [PMID: 37139293 PMCID: PMC10149403 DOI: 10.1016/j.heliyon.2023.e15692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/11/2023] [Accepted: 04/19/2023] [Indexed: 05/05/2023] Open
Abstract
Lipopolysaccharide (LPS) has previously been implicated in insulin resistance by generating an innate immune response and activating inflammatory cascades. Many studies have discovered a relationship between high levels of serum LPS and the advancement of diabetic microvascular problems, indicating that LPS may play a role in the control of critical signaling pathways connected to insulin resistance. The current study focused on signaling pathways linked to insulin resistance and explored probable mechanisms of LPS-induced insulin resistance in a murine model. It next looked at the effects of burdock, bee pollen, and -lipoic acid on LPS-induced inflammation and autoimmune defects in rats. LPS intoxication was induced via ip injection for one week in a dose of 10 mg/kg followed by α-lipoic acid, Burdock and bee pollen in an oral treatment for one month. Following that, biochemical and molecular studies were performed. The RNA expression of the regulating genes STAT5A and PTEN was measured. In addition, ATF-4 and CHOP as autophagy biomarkers were also subjected to mRNA quantification. The results demonstrated a considerable improvement in the -lipoic acid, Burdock, and bee pollen treated groups via modifying oxidative stress indicators as well as molecular ones. Furthermore, glucose concentration in serum and α-amylase were also improved upon treatment with the superiority of α-lipoic acid for modulating all estimated parameters. In conclusion: the results declared in the current study suggested that α-lipoic acid could regulate insulin resistance signaling pathways induced by LPS intoxication.
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Fryk E, Rodrigues Silva VR, Bauzá-Thorbrügge M, Schmelz M, Gan LM, Strindberg L, Jansson PA. Feasibility of high-dose tadalafil and effects on insulin resistance in well-controlled patients with type 2 diabetes (MAKROTAD): a single-centre, double-blind, randomised, placebo-controlled, cross-over phase 2 trial. EClinicalMedicine 2023; 59:101985. [PMID: 37256099 PMCID: PMC10225663 DOI: 10.1016/j.eclinm.2023.101985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 06/01/2023] Open
Abstract
Background Phosphodiesterase-5 inhibitors exert positive vascular and metabolic effects in type 2 diabetes (T2D), but the effect on insulin resistance in T2D is unclear. Methods This randomised, double blind, placebo-controlled, two-period crossover trial was conducted at Sahlgrenska University Hospital (Gothenburg, Sweden). Men without apparent erectile dysfunction (age 40-70 years) and women (age 55-70 years, post-menopause) diagnosed with T2D between 3 months and 10 years, haemoglobin A1c (HbA1c) < 60 mmol/mol and a body mass index (BMI) 27-40 kg/m2 were enrolled. Participants were randomly assigned to one period of oral tadalafil 20 mg once a day and one period of placebo for 6 weeks, separated by an 8-week wash-out period. Placebo and tadalafil tablets were made visually indistinguishable and delivered randomized in two separate boxes for each participant. Both treatment periods ended with a glucose clamp, and measurements of body composition and metabolic markers in blood, subcutaneous and muscular interstitial fluid. The primary aim was to assess difference in whole-body insulin resistance after 6-weeks of treatment, determined after completion of the two study arms, and secondary aims were to study effects of tadalafil on pathophysiology of T2D as well as tolerability of high-dose tadalafil in T2D. Primary analysis was performed in participants with full analysis set (FAS) and safety analysis in all participants who received at least one dose of study medication. This trial is registered with ClinicalTrials.gov (NCT02601989), and EudraCT (2015-000573). Findings Between January 22nd, 2016, and January 31st, 2019, 23 participants with T2D were enrolled, of whom 18 were included in the full analysis set. The effect of tadalafil on insulin resistance was neutral compared with placebo. However, tadalafil decreased glycaemia measured as HbA1c (mean difference -2.50 mmol/mol, 95% confidence interval (CI), -4.20; -0.78, p = 0.005), and, further, we observed amelioration of endothelial function and markers of liver steatosis and glycolysis, whereas no statistically significant differences of other clinical phenotyping were shown. Muscle pain, dyspepsia, and headache were more frequent in participants on high-dose tadalafil compared with placebo (p < 0.05) but no difference between treatments appeared for serious adverse events. Interpretation High-dose tadalafil does not decrease whole-body insulin resistance, but increases microcirculation, induces positive effects in the liver and in intermediate metabolites, in parallel with an improved metabolic control measured as HbA1c. High-dose tadalafil is moderately well tolerated, warranting larger trials to define the optimal treatment regimen in T2D. Funding The Swedish Research Council, Swedish Diabetes Foundation, Novo Nordisk Foundation, the Swedish state under the agreement between the Swedish government and the county councils, the ALF-agreement, Sahlgrenska University Hospital funds, Gothenburg Society of Medicine, Eli Lilly & Company, USA, and Eli Lilly & Company, Sweden AB.
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Affiliation(s)
- Emanuel Fryk
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SU Sahlgrenska, 413 45 Gothenburg, Sweden
| | - Vagner Ramon Rodrigues Silva
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SU Sahlgrenska, 413 45 Gothenburg, Sweden
| | - Marco Bauzá-Thorbrügge
- Department of Neuroscience and Physiology, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, Box 430, 405 30 Gothenburg, Sweden
| | - Martin Schmelz
- Department of Anesthesiology and Intensive Care Medicine Mannheim, University of Heidelberg, 69117 Heidelberg, Germany
| | - Li-Ming Gan
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SU Sahlgrenska, 413 45 Gothenburg, Sweden
- Ribocure Pharmaceuticals AB, Sweden
- Suzhou Ribo Life Science CO. Ltd, China
| | - Lena Strindberg
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SU Sahlgrenska, 413 45 Gothenburg, Sweden
| | - Per-Anders Jansson
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, SU Sahlgrenska, 413 45 Gothenburg, Sweden
- Gothia Forum, Region Västra Götaland, SU Sahlgrenska, 413 45 Gothenburg, Sweden
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Ashkar F, Bhullar KS, Jiang X, Wu J. Tripeptide IRW Improves AMPK/eNOS Signaling Pathway via Activating ACE2 in the Aorta of High-Fat-Diet-Fed C57BL/6 Mice. BIOLOGY 2023; 12:biology12040556. [PMID: 37106756 PMCID: PMC10135585 DOI: 10.3390/biology12040556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 03/30/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023]
Abstract
This study aims to investigate the effect of tripeptide IRW on the local renin–angiotensin system (RAS), particularly angiotensin-converting enzyme 2 (ACE2), and their association with signaling pathways in the aorta of a high-fat-diet (HFD)-induced insulin-resistant mouse model. C57BL/6 mice were fed HFD (45% of the total calories) for six weeks, and then IRW was added to the diet (45 mg/kg body weight (BW)) for another eight weeks. ACE2 mRNA expression and protein level(s) were increased (p < 0.05), while angiotensin II receptor (AT1R) and angiotensin-converting enzyme (ACE) protein abundance was significantly reduced (p < 0.05) in the aorta of HFD mice treated by IRW. IRW supplementation also improved glucose transporter 4 (GLUT4) abundance (p < 0.05) alongside AMP-activated protein kinase (AMPK) (p < 0.05), Sirtuin 1 (SIRT1) (p < 0.05), and endothelial nitric oxide synthase (eNOS) (p < 0.05) expression. IRW downregulated the levels of endothelin 1 (ET-1) and p38 mitogen-activated protein kinases (p38 MAPK, p < 0.05). Furthermore, the levels of AMPK and eNOS in vascular smooth muscle cells (VSMCs) were significantly reduced in ACE2 knockdown cells treated with or without IRW (p < 0.01). In conclusion, this study provided new evidence of the regulatory role of IRW on the aortic ACE2 against metabolic syndrome (MetS) in an HFD-induced insulin-resistant model.
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Affiliation(s)
- Fatemeh Ashkar
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Khushwant S. Bhullar
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Xu Jiang
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2R3, Canada
| | - Jianping Wu
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2R3, Canada
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Vorotnikov AV, Khapchaev AY, Nickashin AV, Shirinsky VP. In Vitro Modeling of Diabetes Impact on Vascular Endothelium: Are Essentials Engaged to Tune Metabolism? Biomedicines 2022; 10:biomedicines10123181. [PMID: 36551937 PMCID: PMC9775148 DOI: 10.3390/biomedicines10123181] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/01/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Angiopathy is a common complication of diabetes mellitus. Vascular endothelium is among the first targets to experience blood-borne metabolic alterations, such as hyperglycemia and hyperlipidemia, the hallmarks of type 2 diabetes. To explore mechanisms of vascular dysfunction and eventual damage brought by these pathologic conditions and to find ways to protect vasculature in diabetic patients, various research approaches are used including in vitro endothelial cell-based models. We present an analysis of the data available from these models that identifies early endothelial cell apoptosis associated with oxidative stress as the major outcome of mimicking hyperglycemia and hyperlipidemia in vitro. However, the fate of endothelial cells observed in these studies does not closely follow it in vivo where massive endothelial damage occurs mainly in the terminal stages of diabetes and in conjunction with comorbidities. We propose that the discrepancy is likely in missing essentials that should be available to cultured endothelial cells to adjust the metabolic state and withstand the immediate apoptosis. We discuss the role of carnitine, creatine, and AMP-activated protein kinase (AMPK) in suiting the endothelial metabolism for long-term function in diabetic type milieu in vitro. Engagement of these essentials is anticipated to expand diabetes research options when using endothelial cell-based models.
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15
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Draicchio F, Behrends V, Tillin NA, Hurren NM, Sylow L, Mackenzie R. Involvement of the extracellular matrix and integrin signalling proteins in skeletal muscle glucose uptake. J Physiol 2022; 600:4393-4408. [PMID: 36054466 PMCID: PMC9826115 DOI: 10.1113/jp283039] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 08/03/2022] [Indexed: 01/11/2023] Open
Abstract
Whole-body euglycaemia is partly maintained by two cellular processes that encourage glucose uptake in skeletal muscle, the insulin- and contraction-stimulated pathways, with research suggesting convergence between these two processes. The normal structural integrity of the skeletal muscle requires an intact actin cytoskeleton as well as integrin-associated proteins, and thus those structures are likely fundamental for effective glucose uptake in skeletal muscle. In contrast, excessive extracellular matrix (ECM) remodelling and integrin expression in skeletal muscle may contribute to insulin resistance owing to an increased physical barrier causing reduced nutrient and hormonal flux. This review explores the role of the ECM and the actin cytoskeleton in insulin- and contraction-mediated glucose uptake in skeletal muscle. This is a clinically important area of research given that defects in the structural integrity of the ECM and integrin-associated proteins may contribute to loss of muscle function and decreased glucose uptake in type 2 diabetes.
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Affiliation(s)
- Fulvia Draicchio
- School of Life and Health SciencesWhitelands CollegeUniversity of RoehamptonLondonUK
| | - Volker Behrends
- School of Life and Health SciencesWhitelands CollegeUniversity of RoehamptonLondonUK
| | - Neale A. Tillin
- School of Life and Health SciencesWhitelands CollegeUniversity of RoehamptonLondonUK
| | - Nicholas M. Hurren
- School of Life and Health SciencesWhitelands CollegeUniversity of RoehamptonLondonUK
| | - Lykke Sylow
- Molecular Metabolism in Cancer & Ageing Research GroupDepartment of Biomedical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Richard Mackenzie
- School of Life and Health SciencesWhitelands CollegeUniversity of RoehamptonLondonUK
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16
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Fluitt MB, Mohit N, Gambhir KK, Nunlee-Bland G. To the Future: The Role of Exosome-Derived microRNAs as Markers, Mediators, and Therapies for Endothelial Dysfunction in Type 2 Diabetes Mellitus. J Diabetes Res 2022; 2022:5126968. [PMID: 35237694 PMCID: PMC8885279 DOI: 10.1155/2022/5126968] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 02/08/2022] [Indexed: 01/19/2023] Open
Abstract
The prevalence of diabetes mellitus (DM) is increasing at a staggering rate around the world. In the United States, more than 30.3 million Americans have DM. Type 2 diabetes mellitus (T2DM) accounts for 91.2% of diabetic cases and disproportionately affects African Americans and Hispanics. T2DM is a major risk factor for cardiovascular disease (CVD) and is the leading cause of morbidity and mortality among diabetic patients. While significant advances in T2DM treatment have been made, intensive glucose control has failed to reduce the development of macro and microvascular related deaths in this group. This highlights the need to further elucidate the underlying molecular mechanisms contributing to CVD in the setting of T2DM. Endothelial dysfunction (ED) plays an important role in the development of diabetes-induced vascular complications, including CVD and diabetic nephropathy (DN). Thus, the endothelium provides a lucrative means to investigate the molecular events involved in the development of vascular complications associated with T2DM. microRNAs (miRNA) participate in numerous cellular responses, including mediating messages in vascular homeostasis. Exosomes are small extracellular vesicles (40-160 nanometers) that are abundant in circulation and can deliver various molecules, including miRNAs, from donor to recipient cells to facilitate cell-to-cell communication. Endothelial cells are in constant contact with exosomes (and exosomal content) that can induce a functional response. This review discusses the modulatory role of exosomal miRNAs and proteins in diabetes-induced endothelial dysfunction, highlighting the significance of miRNAs as markers, mediators, and potential therapeutic interventions to ameliorate ED in this patient group.
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Affiliation(s)
- Maurice B. Fluitt
- Division of Endocrinology and Metabolism, Department of Medicine, Howard University College of Medicine, 520 W St NW, Washington, DC 20059, USA
| | - Neal Mohit
- Division of Endocrinology and Metabolism, Department of Medicine, Howard University College of Medicine, 520 W St NW, Washington, DC 20059, USA
- Department of Biology, Howard University, 415 College St. NW, Washington, DC 20059, USA
| | - Kanwal K. Gambhir
- Division of Endocrinology and Metabolism, Department of Medicine, Howard University College of Medicine, 520 W St NW, Washington, DC 20059, USA
| | - Gail Nunlee-Bland
- Division of Endocrinology and Metabolism, Department of Medicine, Howard University College of Medicine, 520 W St NW, Washington, DC 20059, USA
- Diabetes Treatment Center, Howard University Hospital, 2041 Georgia Ave, NW, Washington, DC 20060, USA
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Samsonov MV, Podkuychenko NV, Khapchaev AY, Efremov EE, Yanushevskaya EV, Vlasik TN, Lankin VZ, Stafeev IS, Skulachev MV, Shestakova MV, Vorotnikov AV, Shirinsky VP. AICAR Protects Vascular Endothelial Cells from Oxidative Injury Induced by the Long-Term Palmitate Excess. Int J Mol Sci 2021; 23:ijms23010211. [PMID: 35008640 PMCID: PMC8745318 DOI: 10.3390/ijms23010211] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 12/20/2021] [Accepted: 12/22/2021] [Indexed: 12/14/2022] Open
Abstract
Hyperlipidemia manifested by high blood levels of free fatty acids (FFA) and lipoprotein triglycerides is critical for the progression of type 2 diabetes (T2D) and its cardiovascular complications via vascular endothelial dysfunction. However, attempts to assess high FFA effects in endothelial culture often result in early cell apoptosis that poorly recapitulates a much slower pace of vascular deterioration in vivo and does not provide for the longer-term studies of endothelial lipotoxicity in vitro. Here, we report that palmitate (PA), a typical FFA, does not impair, by itself, endothelial barrier and insulin signaling in human umbilical vein endothelial cells (HUVEC), but increases NO release, reactive oxygen species (ROS) generation, and protein labeling by malondialdehyde (MDA) hallmarking oxidative stress and increased lipid peroxidation. This PA-induced stress eventually resulted in the loss of cell viability coincident with loss of insulin signaling. Supplementation with 5-aminoimidazole-4-carboxamide-riboside (AICAR) increased endothelial AMP-activated protein kinase (AMPK) activity, supported insulin signaling, and prevented the PA-induced increases in NO, ROS, and MDA, thus allowing to maintain HUVEC viability and barrier, and providing the means to study the long-term effects of high FFA levels in endothelial cultures. An upgraded cell-based model reproduces FFA-induced insulin resistance by demonstrating decreased NO production by vascular endothelium.
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Affiliation(s)
- Mikhail V. Samsonov
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Nikita V. Podkuychenko
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Asker Y. Khapchaev
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Eugene E. Efremov
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Elena V. Yanushevskaya
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Tatiana N. Vlasik
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Vadim Z. Lankin
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Iurii S. Stafeev
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
| | - Maxim V. Skulachev
- Belozersky Institute of Physico-Chemical Biology, M. V. Lomonosov Moscow State University, 119234 Moscow, Russia;
| | | | - Alexander V. Vorotnikov
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
- Correspondence: (A.V.V.); (V.P.S.)
| | - Vladimir P. Shirinsky
- National Medical Research Center for Cardiology, 121552 Moscow, Russia; (M.V.S.); (N.V.P.); (A.Y.K.); (E.E.E.); (E.V.Y.); (T.N.V.); (V.Z.L.); (I.S.S.)
- Correspondence: (A.V.V.); (V.P.S.)
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18
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Bryk-Wiązania AH, Undas A. Hypofibrinolysis in type 2 diabetes and its clinical implications: from mechanisms to pharmacological modulation. Cardiovasc Diabetol 2021; 20:191. [PMID: 34551784 PMCID: PMC8459566 DOI: 10.1186/s12933-021-01372-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/25/2021] [Indexed: 12/19/2022] Open
Abstract
A prothrombotic state is a typical feature of type 2 diabetes mellitus (T2DM). Apart from increased platelet reactivity, endothelial dysfunction, hyperfibrinogenemia, and hypofibrinolysis are observed in T2DM. A variety of poorly elucidated mechanisms behind impaired fibrinolysis in this disease have been reported, indicating complex associations between platelet activation, fibrin formation and clot structure, and fibrinolysis inhibitors, in particular, elevated plasminogen antigen inhibitor-1 levels which are closely associated with obesity. Abnormal fibrin clot structure is of paramount importance for relative resistance to plasmin-mediated lysis in T2DM. Enhanced thrombin generation, a proinflammatory state, increased release of neutrophil extracellular traps, elevated complement C3, along with posttranslational modifications of fibrinogen and plasminogen have been regarded to contribute to altered clot structure and impaired fibrinolysis in T2DM. Antidiabetic agents such as metformin and insulin, as well as antithrombotic agents, including anticoagulants, have been reported to improve fibrin properties and accelerate fibrinolysis in T2DM. Notably, recent evidence shows that hypofibrinolysis, assessed in plasma-based assays, has a predictive value in terms of cardiovascular events and cardiovascular mortality in T2DM patients. This review presents the current data on the mechanisms underlying arterial and venous thrombotic complications in T2DM patients, with an emphasis on hypofibrinolysis and its impact on clinical outcomes. We also discuss potential modulators of fibrinolysis in the search for optimal therapy in diabetic patients.
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Affiliation(s)
- Agata Hanna Bryk-Wiązania
- Department of Endocrinology, Jagiellonian University Medical College, Kraków, Poland.,University Hospital, Kraków, Poland
| | - Anetta Undas
- Institute of Cardiology, Jagiellonian University Medical College, 80 Prądnicka St., 31-202, Kraków, Poland. .,John Paul II Hospital, Kraków , Poland.
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Kim DY, Piao J, Park JS, Lee D, Hong HS. Substance P ameliorates TNF-α-mediated impairment of human aortic vascular cells in vitro. Clin Exp Pharmacol Physiol 2021; 48:1288-1297. [PMID: 34060109 DOI: 10.1111/1440-1681.13533] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/24/2021] [Accepted: 05/28/2021] [Indexed: 11/26/2022]
Abstract
Vascular diseases are caused by endothelial dysfunction due to inflammation. On endothelial injury, the expression of extracellular matrix (ECM) is enhanced and nitric oxide (NO) bioavailability becomes deficient. This condition affects endothelial metabolism and leads to vascular destruction. The aim of this investigation was to determine whether substance P (SP) is able to protect the endothelium against inflammatory stress. To this end, aortic endothelial cells were pre-treated with SP, followed by tumour necrosis factor α (TNF-α), and cellular responses were evaluated using a combination of cell biology and quantification assays, as well as western blot analyses. Our results show that TNF-α enhanced ECM expression and reduced NO production within 4 hours, promoting immune cell adhesion to the endothelium and monocyte chemoattractant protein-1 (MCP-1) secretion from aortic smooth muscle cells. However, SP treatment ameliorated TNF-α-induced endothelial impairment by maintaining low ECM levels. Our data suggest that this protective effect is mediated by Akt activation and NO-enriched conditions. The inhibition of aortic endothelial cell injury by SP also reduced MCP-1 production in aortic smooth muscle cells. Together, our data indicate that SP can protect aortic endothelial and smooth muscle cells from inflammatory injury, which suggests that SP may prevent cardiovascular disease.
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Affiliation(s)
- Do Young Kim
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Jiyuan Piao
- Department of Genetic Engineering, College of Life Science and Graduate School of Biotechnology, Kyung Hee University, Seoul, South Korea
| | - Jeong Seop Park
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Dahyeon Lee
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Hyun Sook Hong
- Department of Biomedical Science and Technology, Graduate School, Kyung Hee University, Seoul, South Korea
- East-West Medical Research Institute, Kyung Hee University, Seoul, South Korea
- Kyung Hee Institute of Regenerative Medicine (KIRM), Medical Science Research institute, Kyung Hee University Medical Center, Seoul, South Korea
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20
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Finsen SH, Hansen MR, Hoffmann‐Petersen J, Højgaard HF, Mortensen SP. Eight weeks of mineralocorticoid blockade does not improve insulin sensitivity in type 2 diabetes. Physiol Rep 2021; 9:e14971. [PMID: 34350730 PMCID: PMC8339527 DOI: 10.14814/phy2.14971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 06/25/2021] [Accepted: 06/25/2021] [Indexed: 11/24/2022] Open
Abstract
Individuals with type 2 diabetes have an increased risk of cardiovascular disease. A correlation between plasma aldosterone and hyperinsulinemia has been demonstrated in vivo, and hyperinsulinemia and insulin resistance are independently associated with the development of cardiovascular complications. We investigated if mineralocorticoid blockade (Eplerenone) improves insulin sensitivity in individuals with type 2 diabetes compared to healthy controls. We included 13 participants with type 2 diabetes (<5 years; male/female, Caucasians) and 10 healthy control participants (male/female, Caucasians). On 2 experimental days, before and at the end of the 8 weeks of treatment with mineralocorticoid blockade, a two-stage hyperinsulinemic-isoglycemic clamp (20 and 50 mU∙m-2 min-1 ) was performed for the determination of insulin sensitivity. No change in insulin sensitivity was detected at the end of the mineralocorticoid blockade in the individuals with type 2 diabetes or the healthy controls. Both before and at the end of the treatment with mineralocorticoid blockade, the individuals with type 2 diabetes had a lower insulin sensitivity compared to healthy controls. In conclusion, mineralocorticoid receptor blockade does not appear to improve insulin sensitivity in individuals with type 2 diabetes. CLINICAL TRIAL REGISTRATION: NCT03017703. https://clinicaltrials.gov/ct2/show/NCT03017703.
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Affiliation(s)
- Stine H. Finsen
- Department of Cardiovascular and Renal ResearchUniversity of Southern DenmarkOdenseDenmark
| | - Mie R. Hansen
- Department of Cardiovascular and Renal ResearchUniversity of Southern DenmarkOdenseDenmark
| | | | | | - Stefan P. Mortensen
- Department of Cardiovascular and Renal ResearchUniversity of Southern DenmarkOdenseDenmark
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21
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Karkada G, Maiya GA, Houreld NN, Arany P, Rao Kg M, Adiga S, Kamath SU, Shetty S. Effect of photobiomodulation therapy on inflammatory cytokines in healing dynamics of diabetic wounds: a systematic review of preclinical studies. Arch Physiol Biochem 2020; 129:663-670. [PMID: 33370535 DOI: 10.1080/13813455.2020.1861025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
CONTEXT Delayed wound healing in diabetes mellitus (DM) is due to the overlapping phases of the healing process. The prolonged inflammation and altered levels of inflammatory cytokines lead to deformed cell proliferation. Photobiomodulation alleviates the expression of inflammatory cytokines and promotes tissue repair, thereby restoring the wound healing process. OBJECTIVE To find out the effect of photobiomodulation therapy (PBMT) in the healing dynamics of diabetic wounds with particular emphasis on interleukin-6, interleukin-1β, and tumour necrosis factor-α. METHODS Scientific databases searched using keywords of the population: DM, intervention: PBMT, and outcomes: inflammatory cytokines. RESULTS We have included five preclinical studies in the present systematic review for qualitative analysis. These studies evaluated the effect of PBMT at different wavelengths, dosage, and time on wound healing in DM. CONCLUSIONS The systematic review concludes that PBMT regulates inflammatory cytokines levels, enhances cell proliferation, and migration, thereby improving the wound healing properties.
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Affiliation(s)
- Gagana Karkada
- Department of Physiotherapy, Centre for Diabetic Foot Care and Research, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - G Arun Maiya
- Department of Physiotherapy, Centre for Diabetic Foot Care and Research, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India
| | - Nicolette N Houreld
- Department of Health Sciences, Laser Research Centre, University of Johannesburg, Johannesburg, South Africa
| | - Praveen Arany
- Department of Oral Biology, School of Dental Medicine, Engineering & Applied Sciences, University at Buffalo, Buffalo, NY, USA
| | - Mohandas Rao Kg
- Department of Anatomy, Melaka Manipal Medical College-Manipal Campus, Manipal Academy of Higher Education, Manipal, India
| | - Shalini Adiga
- Department of Pharmacology, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
| | - Shobha Ullas Kamath
- Department of Biochemistry, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India
| | - Somashekar Shetty
- Department of Biochemistry, Melaka Manipal Medical College-Manipal Campus, Manipal Academy of Higher Education, Manipal, India
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22
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Draicchio F, van Vliet S, Ancu O, Paluska SA, Wilund KR, Mickute M, Sathyapalan T, Renshaw D, Watt P, Sylow L, Burd NA, Mackenzie RW. Integrin-associated ILK and PINCH1 protein content are reduced in skeletal muscle of maintenance haemodialysis patients. J Physiol 2020; 598:5701-5716. [PMID: 32969494 DOI: 10.1113/jp280441] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 09/09/2020] [Indexed: 12/17/2022] Open
Abstract
KEY POINTS Patients with renal failure undergoing maintenance haemodialysis are associated with insulin resistance and protein metabolism dysfunction. Novel research suggests that disruption to the transmembrane protein linkage between the cytoskeleton and the extracellular matrix in skeletal muscle may contribute to reduced amino acid metabolism and insulin resistance in haemodialysis. ILK, PINCH1 and pFAKTyr397 were significantly decreased in haemodialysis compared to controls, whereas Rac1 and Akt2 showed no different between groups. Rac1 deletion in the Rac1 knockout model did not alter the expression of integrin-associated proteins. Phenylalanine kinetics were reduced in the haemodialysis group at 30 and 60 min post meal ingestion compared to controls; both groups showed similar levels of insulin sensitivity and β-cell function. Key proteins in the integrin-cytoskeleton linkage are reduced in haemodialysis patients, suggesting for the first time that integrin-associated proteins dysfunction may contribute to reduced phenylalanine flux without affecting insulin resistance in haemodialysis patients. ABSTRACT Muscle atrophy, insulin resistance and reduced muscle phosphoinositide 3-kinase-Akt signalling are common characteristics of patients undergoing maintenance haemodialysis (MHD). Disruption to the transmembrane protein linkage between the cytoskeleton and the extracellular matrix in skeletal muscle may contribute to reduced amino acid metabolism and insulin resistance in MHD patients. Eight MHD patients (age: 56 ± 5 years: body mass index: 32 ± 2 kg m-2 ) and non-diseased controls (age: 50 ± 2 years: body mass index: 31 ± 1 kg m-2 ) received primed continuous l-[ring-2 H5 ]phenylalanine before consuming a mixed meal. Phenylalanine metabolism was determined using two-compartment modelling. Muscle biopsies were collected prior to the meal and at 300 min postprandially. In a separate experiment, skeletal muscle tissue from muscle-specific Rac1 knockout (Rac1 mKO) was harvested to investigate whether Rac1 depletion disrupted the cytoskeleton-integrin linkage, allowing for cross-model examination of proteins of interest. ILK, PINCH1 and pFAKTyr397 were significantly lower in MHD (P < 0.01). Rac1 and Akt showed no difference between groups for the human trial. Rac1 deletion in the Rac1 mKO model did not alter the expression of integrin-associated proteins. Phenylalanine rates of appearance and disappearance, as well as metabolic clearance rates, were lower in the MHD group at 30 and 60 min post meal ingestion compared to controls (P < 0.05). Both groups showed similar levels of insulin sensitivity and β-cell function. Key proteins in the integrin-cytoskeleton linkage are reduced in MHD patients, suggesting for the first time that integrin-associated proteins dysfunction may contribute to reduced phenylalanine flux without affecting insulin resistance in haemodialysis patients.
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Affiliation(s)
- Fulvia Draicchio
- Department of Life Sciences, Sport and Exercise Science Research Center, University of Roehampton, London, UK
| | - Stephan van Vliet
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Oana Ancu
- Department of Life Sciences, Sport and Exercise Science Research Center, University of Roehampton, London, UK
| | - Scott A Paluska
- Department of Family Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Kenneth R Wilund
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Monika Mickute
- Leicester Diabetes Center, Leicester General Hospital, Leicester, UK
| | | | - Derek Renshaw
- Centre for Sport, Exercise and Life Sciences, Coventry University, Coventry, UK
| | - Peter Watt
- Sport and Exercise Science and Sports Medicine research and enterprise group, Welkin Laboratories, University of Brighton, Eastbourne, UK
| | - Lykke Sylow
- Department of Nutrition, Exercise and Sport, August Krogh Bygningen, University of Copenhagen, Denmark
| | - Nicholas A Burd
- Department of Kinesiology and Community Health, University of Illinois at Urbana-Champaign, Urbana, IL, USA.,Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Richard Wa Mackenzie
- Department of Life Sciences, Sport and Exercise Science Research Center, University of Roehampton, London, UK
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23
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Gur S, Hellstrom WJ. Harnessing Stem Cell Potential for the Treatment of Erectile Function in Men with Diabetes Mellitus: From Preclinical/Clinical Perspectives to Penile Tissue Engineering. Curr Stem Cell Res Ther 2020; 15:308-320. [DOI: 10.2174/1574888x14666190828142045] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 07/10/2019] [Accepted: 08/06/2019] [Indexed: 12/20/2022]
Abstract
Background::
According to the World Health Organization, more than 150 million people
are diabetic, and this number will increase twofold by the year 2025. Diabetes-related complications
affect all body organ systems, including the penis. Diabetes-induced Erectile Dysfunction (ED) is
caused by neuropathy of the penile nerves and vasculopathy involving the smooth muscle and endothelium
of the corpus cavernosum.
Objective::
This study aims to present an overview of Stem Cell (SC) research in diabetic animal models
of ED, focusing on the function, signaling, and niches that have a prominent role in the regeneration
of cavernosal cells and penile tissues. We highlight common erectile pathologies caused by diabetes
and review relevant preclinical trials. We also discuss paracrine mechanisms of various SC therapies
involved in the repair of endothelial cells and cavernous nerves in these diabetic models.
Method::
A PubMed search was performed, with dates ranging from inception until Mar 31, 2019.
Results::
This review provides a comprehensive evaluation of the various strategies that have been
investigated for improving SC delivery methods, through preclinical literature and published clinical
trials regarding ED in men with diabetes. Various cell-type applications have benefited erectile function
in diabetic models of ED.
Conclusion::
This review examines the progress and remaining challenges in diabetes-related SC research
regarding ED. Moving forward, it is only with a combined effort of basic biology and translational
work that the potential of SC-based therapies in diabetes in ED can be realized.
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Affiliation(s)
- Serap Gur
- Department of Urology, Tulane University Health Sciences Center, New Orleans, LA, United States
| | - Wayne J.G. Hellstrom
- Department of Urology, Tulane University Health Sciences Center, New Orleans, LA, United States
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24
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Khoukaz HB, Ji Y, Braet DJ, Vadali M, Abdelhamid AA, Emal CD, Lawrence DA, Fay WP. Drug Targeting of Plasminogen Activator Inhibitor-1 Inhibits Metabolic Dysfunction and Atherosclerosis in a Murine Model of Metabolic Syndrome. Arterioscler Thromb Vasc Biol 2020; 40:1479-1490. [PMID: 32268785 PMCID: PMC7255962 DOI: 10.1161/atvbaha.119.313775] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 03/23/2020] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Enhanced expression of PAI-1 (plasminogen activator inhibitor-1) has been implicated in atherosclerosis formation in humans with obesity and metabolic syndrome. However, little is known about the effects of pharmacological targeting of PAI-1 on atherogenesis. This study examined the effects of pharmacological PAI-1 inhibition on atherosclerosis formation in a murine model of obesity and metabolic syndrome. Approach and Results: LDL receptor-deficient (ldlr-/-) mice were fed a Western diet high in cholesterol, fat, and sucrose to induce obesity, metabolic dysfunction, and atherosclerosis. Western diet triggered significant upregulation of PAI-1 expression compared with normal diet controls. Addition of a pharmacological PAI-1 inhibitor (either PAI-039 or MDI-2268) to Western diet significantly inhibited obesity and atherosclerosis formation for up to 24 weeks without attenuating food consumption. Pharmacological PAI-1 inhibition significantly decreased macrophage accumulation and cell senescence in atherosclerotic plaques. Recombinant PAI-1 stimulated smooth muscle cell senescence, whereas a PAI-1 mutant defective in LRP1 (LDL receptor-related protein 1) binding did not. The prosenescent effect of PAI-1 was blocked by PAI-039 and R2629, a specific anti-LRP1 antibody. PAI-039 significantly decreased visceral adipose tissue inflammation, hyperglycemia, and hepatic triglyceride content without altering plasma lipid profiles. CONCLUSIONS Pharmacological targeting of PAI-1 inhibits atherosclerosis in mice with obesity and metabolic syndrome, while inhibiting macrophage accumulation and cell senescence in atherosclerotic plaques, as well as obesity-associated metabolic dysfunction. PAI-1 induces senescence of smooth muscle cells in an LRP1-dependent manner. These results help to define the role of PAI-1 in atherosclerosis formation and suggest a new plasma-lipid-independent strategy for inhibiting atherogenesis.
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Affiliation(s)
- Hekmat B Khoukaz
- From the Department of Medicine (H.B.K, Y.J., D.J.B., M.V., A.A.A., W.P.F.), University of Missouri School of Medicine
| | - Yan Ji
- From the Department of Medicine (H.B.K, Y.J., D.J.B., M.V., A.A.A., W.P.F.), University of Missouri School of Medicine
| | - Drew J Braet
- From the Department of Medicine (H.B.K, Y.J., D.J.B., M.V., A.A.A., W.P.F.), University of Missouri School of Medicine
| | - Manisha Vadali
- From the Department of Medicine (H.B.K, Y.J., D.J.B., M.V., A.A.A., W.P.F.), University of Missouri School of Medicine
| | - Ahmed A Abdelhamid
- From the Department of Medicine (H.B.K, Y.J., D.J.B., M.V., A.A.A., W.P.F.), University of Missouri School of Medicine
| | - Cory D Emal
- Department of Chemistry, Eastern Michigan University, Ypsilanti (C.D.E.)
| | - Daniel A Lawrence
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor (D.A.L.)
| | - William P Fay
- From the Department of Medicine (H.B.K, Y.J., D.J.B., M.V., A.A.A., W.P.F.), University of Missouri School of Medicine
- Department of Medical Pharmacology & Physiology (W.P.F.), University of Missouri School of Medicine
- Research Service, Harry S. Truman Memorial Veterans Hospital, Columbia, MO (W.P.F.)
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25
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Lee DH, Lee BK, Kim YH, Park YS, Sim MS, Kim SJ, Oh SH, Lee DH, Kim YJ, Kim WY. Vasospasm-related Sudden Cardiac Death Has Outcomes Comparable with Coronary Stenosis in Out-of-Hospital Cardiac Arrest. J Korean Med Sci 2020; 35:e131. [PMID: 32419397 PMCID: PMC7234855 DOI: 10.3346/jkms.2020.35.e131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 03/05/2020] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Characteristics of coronary vasospasm-related sudden cardiac death are not well understood. We aimed to compare the characteristics and clinical outcomes between coronary vasospasm and stenosis, in out-of-hospital cardiac arrest (OHCA) survivors, who underwent coronary angiogram (CAG). METHODS We conducted a multicenter retrospective observational registry-based study at 8 Korean tertiary care centers. Data of OHCA survivors undergoing CAG between 2010 and 2015 were extracted. Patients were divided into vasospasm and stenosis (stenosis > 50%) groups based on CAG findings. The primary and the secondary outcomes were survival and a good neurologic outcome at 30 days after OHCA. Patients in the vasospasm and stenosis groups were propensity score matched. RESULTS Of the 413 included patients, vasospasm and stenosis groups comprised 87 and 326 patients, respectively. There were 279 (66.7%) survivors and 206 (49.3%) patients with good neurologic outcomes. The vasospasm group had better clinical characteristics for outcome (younger age, less diabetes and hypertension, more prehospital restoration of spontaneous circulation, higher Glasgow Coma Scale, less ST segment elevation, and less requirement of circulatory support). The vasospasm group had better survival (75/87 vs. 204/326, P < 0.001) and good neurologic outcomes (62/87 vs. 144/326, P < 0.001). However, vasospasm was not independently associated with survival (odds ratio [OR], 0.980; 95% confidence interval [CI], 0.400-2.406) or neurologic outcomes (OR, 0.870; 95% CI, 0.359-2.108) after adjustment and vasospasm was not associated with survival and neurologic outcome in propensity score-matched cohorts. CONCLUSION Our analysis of propensity score-matched cohorts finds that vasospasm OHCA survivors have survival and neurologic outcomes comparable with those of stenotic OHCA survivors.
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Affiliation(s)
- Dong Hun Lee
- Department of Emergency Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Byung Kook Lee
- Department of Emergency Medicine, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea.
| | - Yong Hwan Kim
- Department of Emergency Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
| | - Yoo Seok Park
- Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Min Seob Sim
- Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Su Jin Kim
- Department of Emergency Medicine, Korea University College of Medicine, Seoul, Korea
| | - Sang Hoon Oh
- Department of Emergency Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Dong Hoon Lee
- Department of Emergency Medicine, Chung-Ang University, College of Medicine, Seoul, Korea
| | - Youn Jung Kim
- Department of Emergency Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Won Young Kim
- Department of Emergency Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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26
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Sardu C, Gambardella J, Morelli MB, Wang X, Marfella R, Santulli G. Hypertension, Thrombosis, Kidney Failure, and Diabetes: Is COVID-19 an Endothelial Disease? A Comprehensive Evaluation of Clinical and Basic Evidence. J Clin Med 2020; 9:E1417. [PMID: 32403217 PMCID: PMC7290769 DOI: 10.3390/jcm9051417] [Citation(s) in RCA: 342] [Impact Index Per Article: 85.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Revised: 05/02/2020] [Accepted: 05/04/2020] [Indexed: 02/06/2023] Open
Abstract
The symptoms most commonly reported by patients affected by coronavirus disease (COVID-19) include cough, fever, and shortness of breath. However, other major events usually observed in COVID-19 patients (e.g., high blood pressure, arterial and venous thromboembolism, kidney disease, neurologic disorders, and diabetes mellitus) indicate that the virus is targeting the endothelium, one of the largest organs in the human body. Herein, we report a systematic and comprehensive evaluation of both clinical and preclinical evidence supporting the hypothesis that the endothelium is a key target organ in COVID-19, providing a mechanistic rationale behind its systemic manifestations.
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Affiliation(s)
- Celestino Sardu
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80100 Naples, Italy; (C.S.); (R.M.)
- Department of Medical Sciences, International University of Health and Medical Sciences “Saint Camillus”, 00131 Rome, Italy
| | - Jessica Gambardella
- Department of Advanced Biomedical Sciences, International Translational Research and Medical Education Academic Research Unit (ITME), “Federico II” University, 80131 Naples, Italy;
- Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, New York, NY 10461, USA; (M.B.M.); (X.W.)
| | - Marco Bruno Morelli
- Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, New York, NY 10461, USA; (M.B.M.); (X.W.)
- Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM), Montefiore University Hospital, New York, NY 10461, USA
| | - Xujun Wang
- Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, New York, NY 10461, USA; (M.B.M.); (X.W.)
| | - Raffaele Marfella
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, 80100 Naples, Italy; (C.S.); (R.M.)
| | - Gaetano Santulli
- Department of Advanced Biomedical Sciences, International Translational Research and Medical Education Academic Research Unit (ITME), “Federico II” University, 80131 Naples, Italy;
- Department of Medicine, Division of Cardiology, Albert Einstein College of Medicine, Wilf Family Cardiovascular Research Institute, New York, NY 10461, USA; (M.B.M.); (X.W.)
- Department of Molecular Pharmacology, Fleischer Institute for Diabetes and Metabolism (FIDAM), Montefiore University Hospital, New York, NY 10461, USA
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27
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Rubin LH, Xu Y, Norris PJ, Wang X, Dastgheyb R, Fitzgerald KC, Keating SM, Kaplan RC, Maki PM, Anastos K, Springer G, Benning L, Kassaye S, Gustafson DR, Valcour VG, Williams DW. Early Inflammatory Signatures Predict Subsequent Cognition in Long-Term Virally Suppressed Women With HIV. Front Integr Neurosci 2020; 14:20. [PMID: 32390808 PMCID: PMC7193823 DOI: 10.3389/fnint.2020.00020] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Accepted: 03/23/2020] [Indexed: 12/16/2022] Open
Abstract
Immunologic function is an important determinant of cognition. Here we examined the contribution of early immune signatures to cognitive performance among HIV-infected, virally suppressed women (HIV+VS) and in HIV-uninfected (HIV-) women. Specifically, we measured serum inflammatory markers, developed combinatory immune signatures, and evaluated their associations with cognition. Forty-nine HIV+VS women in the Women’s Interagency HIV Study (WIHS) who achieved viral suppression shortly after effective antiretroviral therapy (ART) initiation, and 56 matched HIV− women were selected. Forty-two serum inflammatory markers were measured within 2 years of effective ART initiation for HIV+VS women, and at an initial timepoint for HIV− women. The same inflammatory markers were also measured approximately 1, 7, and 12 years later for all women. Of the 105 women with complete immune data, 83 (34 HIV+VS, 49 HIV−) also had cognitive data available 12 years later at ≥1 time points (median = 3.1). We searched for combinatory immune signatures by adapting a dynamic matrix factorization analytic method that builds upon Tucker decomposition followed by Ingenuity® Pathway Analysis to facilitate data interpretation. Seven combinatory immune signatures emerged based on the Frobenius residual. Three signatures were common between HIV+VS and HIV− women, while four signatures were unique. These inflammatory signatures predicted subsequent cognitive performance in both groups using mixed-effects modeling, but more domain-specific associations were significant in HIV+VS than HIV− women. Leukocyte influx into brain was a major contributor to cognitive function in HIV+VS women, while T cell exhaustion, inflammatory response indicative of depressive/psychiatric disorders, microglial activity, and cytokine signaling predicted both global and domain-specific performance for HIV− women. Our findings suggest that immune signatures may be useful diagnostic, prognostic, and immunotherapeutic targets predictive of subsequent cognitive performance. Importantly, they also provide insight into common and distinct inflammatory mechanisms underlying cognition in HIV− and HIV+VS women.
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Affiliation(s)
- Leah H Rubin
- Department of Neurology, Johns Hopkins University, Baltimore, MD, United States.,Department of Psychiatry, Johns Hopkins University, Baltimore, MD, United States.,Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Yanxun Xu
- Department of Applied Mathematics and Statistics, Johns Hopkins University, Baltimore, MD, United States.,Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, United States
| | - Philip J Norris
- Department of Laboratory Medicine, Vitalant Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Xuzhi Wang
- Department of Applied Mathematics and Statistics, Johns Hopkins University, Baltimore, MD, United States
| | - Raha Dastgheyb
- Department of Neurology, Johns Hopkins University, Baltimore, MD, United States
| | | | - Sheila M Keating
- Department of Laboratory Medicine, Vitalant Research Institute, University of California, San Francisco, San Francisco, CA, United States
| | - Robert C Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Pauline M Maki
- Department of Psychiatry, University of Illinois at Chicago, Chicago, IL, United States.,Department of Psychology, University of Illinois at Chicago, Chicago, IL, United States
| | - Kathryn Anastos
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of General Internal Medicine, Albert Einstein College of Medicine, Bronx, NY, United States.,Department of Obstetrics and Gynecology and Women's Health, Albert Einstein College of Medicine, Bronx, NY, United States
| | - Gayle Springer
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Lorie Benning
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, United States
| | - Seble Kassaye
- Department of Medicine, Georgetown University, Washington, DC, United States
| | - Deborah R Gustafson
- Department of Neurology, SUNY Downstate Health Sciences University, Brooklyn, NY, United States
| | - Victor G Valcour
- Department of Neurology, University of California, San Francisco, San Francisco, CA, United States
| | - Dionna W Williams
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University, Baltimore, MD, United States.,Division of Clinical Pharmacology, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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28
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Park J, Kim HK, Park EA, Park JB, Lee SP, Lee W, Kim YJ, Sohn DW. Coronary Computed Tomography Angiography for the Diagnosis of Vasospastic Angina: Comparison with Invasive Coronary Angiography and Ergonovine Provocation Test. Korean J Radiol 2020; 20:719-728. [PMID: 30993923 PMCID: PMC6470084 DOI: 10.3348/kjr.2018.0847] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Accepted: 01/11/2019] [Indexed: 01/25/2023] Open
Abstract
OBJECTIVE To investigate the diagnostic validity of coronary computed tomography angiography (cCTA) in vasospastic angina (VA) and factors associated with discrepant results between invasive coronary angiography with the ergonovine provocation test (iCAG-EPT) and cCTA. MATERIALS AND METHODS Of the 1397 patients diagnosed with VA from 2006 to 2016, 33 patients (75 lesions) with available cCTA data from within 6 months before iCAG-EPT were included. The severity of spasm (% diameter stenosis [%DS]) on iCAG-EPT and cCTA was assessed, and the difference in %DS (Δ%DS) was calculated. Δ%DS was compared after classifying the lesions according to pre-cCTA-administered sublingual nitroglycerin (SL-NG) or beta-blockers. The lesions were further categorized with %DS ≥ 50% on iCAG-EPT or cCTA defined as a significant spasm, and the diagnostic performance of cCTA on identifying significant spasm relative to iCAG-EPT was assessed. RESULTS Compared to lesions without SL-NG treatment, those with SL-NG treatment showed a higher Δ%DS (39.2% vs. 22.1%, p = 0.002). However, there was no difference in Δ%DS with or without beta-blocker treatment (35.1% vs. 32.6%, p = 0.643). The significant difference in Δ%DS associated with SL-NG was more prominent in patients who were aged < 60 years, were male, had body mass index < 25 kg/m², and had no history of hypertension, diabetes, or dyslipidemia. Based on iCAG-EPT as the reference, the per-lesion-based sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of cCTA for VA diagnosis were 7.5%, 94.0%, 60.0%, 47.1%, and 48.0%, respectively. CONCLUSION For patients with clinically suspected VA, confirmation with iCAG-EPT needs to be considered without completely excluding the diagnosis of VA simply based on cCTA results, although further prospective studies are required for confirmation.
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Affiliation(s)
- Jiesuck Park
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Hyung Kwan Kim
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea.
| | - Eun Ah Park
- Department of Radiology, Seoul National University Hospital, Seoul, Korea.
| | - Jun Bean Park
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Seung Pyo Lee
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Whal Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Yong Jin Kim
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
| | - Dae Won Sohn
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea
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29
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Laboratory Parameters of Hemostasis, Adhesion Molecules, and Inflammation in Type 2 Diabetes Mellitus: Correlation with Glycemic Control. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17010300. [PMID: 31906326 PMCID: PMC6982208 DOI: 10.3390/ijerph17010300] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 12/28/2019] [Accepted: 12/30/2019] [Indexed: 12/25/2022]
Abstract
Background: Type 2 diabetes mellitus (T2DM) is characterized by a prothrombotic state, predisposing to vascular complications. Some related markers, linking thrombophilia to hemostasis and inflammation, however, have been poorly explored in relation to patients’ glycemia. We therefore investigated the association of laboratory hemostatic parameters, circulating adhesion molecules (ADMs), white blood cell (WBC) count, and neutrophil/lymphocyte ratio (NLR) with T2DM and glycemic control. Research design: In this study, 82 subjects, grouped into T2DM patients (n = 41) and healthy individuals (n = 41) were enrolled. To evaluate glycemic control, the T2DM cohort was expanded to 133 patients and sub-classified according to glycated hemoglobin (HbA1c) <7% and ≥ 7% (n = 58 and n = 75, respectively). We assessed glycemia, HbA1c, prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen, plasminogen activator inhibitor-1 (PAI-1), platelet and leukocyte parameters, vascular cell adhesion molecule 1 (VCAM-1), intercellular adhesion molecule 1 (ICAM-1), and selectins (E-, P-, L-). Results: PT % activity, PAI-1, VCAM-1, WBC, and neutrophil counts were significantly higher in T2DM patients than in healthy subjects. Poor glycemic control (HbA1c ≥ 7%) was correlated with increased PT activity (p = 0.015), and higher levels of E-selectin (p = 0.009), P-selectin (p = 0.012), and NLR (p = 0.019). Conclusions: Both T2DM and poor glycemic control affect some parameters of hemostasis, inflammation, and adhesion molecules. Further studies are needed to establish their clinical utility as adjuvant markers for cardio-vascular risk in T2DM patients.
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30
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Hasib A, Hennayake CK, Bracy DP, Bugler-Lamb AR, Lantier L, Khan F, Ashford MLJ, McCrimmon RJ, Wasserman DH, Kang L. CD44 contributes to hyaluronan-mediated insulin resistance in skeletal muscle of high-fat-fed C57BL/6 mice. Am J Physiol Endocrinol Metab 2019; 317:E973-E983. [PMID: 31550181 PMCID: PMC6957377 DOI: 10.1152/ajpendo.00215.2019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Extracellular matrix hyaluronan is increased in skeletal muscle of high-fat-fed insulin-resistant mice, and reduction of hyaluronan by PEGPH20 hyaluronidase ameliorates diet-induced insulin resistance (IR). CD44, the main hyaluronan receptor, is positively correlated with type 2 diabetes. This study determines the role of CD44 in skeletal muscle IR. Global CD44-deficient (cd44-/-) mice and wild-type littermates (cd44+/+) were fed a chow diet or 60% high-fat diet for 16 wk. High-fat-fed cd44-/- mice were also treated with PEGPH20 to evaluate its CD44-dependent action. Insulin sensitivity was measured by hyperinsulinemic-euglycemic clamp (ICv). High-fat feeding increased muscle CD44 protein expression. In the absence of differences in body weight and composition, despite lower clamp insulin during ICv, the cd44-/- mice had sustained glucose infusion rate (GIR) regardless of diet. High-fat diet-induced muscle IR as evidenced by decreased muscle glucose uptake (Rg) was exhibited in cd44+/+ mice but absent in cd44-/- mice. Moreover, gastrocnemius Rg remained unchanged between genotypes on chow diet but was increased in high-fat-fed cd44-/- compared with cd44+/+ when normalized to clamp insulin concentrations. Ameliorated muscle IR in high-fat-fed cd44-/- mice was associated with increased vascularization. In contrast to previously observed increases in wild-type mice, PEGPH20 treatment in high-fat-fed cd44-/- mice did not change GIR or muscle Rg during ICv, suggesting a CD44-dependent action. In conclusion, genetic CD44 deletion improves muscle IR, and the beneficial effects of PEGPH20 are CD44-dependent. These results suggest a critical role of CD44 in promoting hyaluronan-mediated muscle IR, therefore representing a potential therapeutic target for diabetes.
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Affiliation(s)
- Annie Hasib
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - Chandani K Hennayake
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - Deanna P Bracy
- Department of Molecular Physiology and Biophysics and Mouse Metabolic Phenotyping Centre, Vanderbilt University, Nashville, Tennessee
| | - Aimée R Bugler-Lamb
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - Louise Lantier
- Department of Molecular Physiology and Biophysics and Mouse Metabolic Phenotyping Centre, Vanderbilt University, Nashville, Tennessee
| | - Faisel Khan
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - Michael L J Ashford
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - Rory J McCrimmon
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
| | - David H Wasserman
- Department of Molecular Physiology and Biophysics and Mouse Metabolic Phenotyping Centre, Vanderbilt University, Nashville, Tennessee
| | - Li Kang
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee, Scotland, United Kingdom
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31
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Jansson L, Carlsson PO. Pancreatic Blood Flow with Special Emphasis on Blood Perfusion of the Islets of Langerhans. Compr Physiol 2019; 9:799-837. [PMID: 30892693 DOI: 10.1002/cphy.c160050] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The pancreatic islets are more richly vascularized than the exocrine pancreas, and possess a 5- to 10-fold higher basal and stimulated blood flow, which is separately regulated. This is reflected in the vascular anatomy of the pancreas where islets have separate arterioles. There is also an insulo-acinar portal system, where numerous venules connect each islet to the acinar capillaries. Both islets and acini possess strong metabolic regulation of their blood perfusion. Of particular importance, especially in the islets, is adenosine and ATP/ADP. Basal and stimulated blood flow is modified by local endothelial mediators, the nervous system as well as gastrointestinal hormones. Normally the responses to the nervous system, especially the parasympathetic and sympathetic nerves, are fairly similar in endocrine and exocrine parts. The islets seem to be more sensitive to the effects of endothelial mediators, especially nitric oxide, which is a permissive factor to maintain the high basal islet blood flow. The gastrointestinal hormones with pancreatic effects mainly influence the exocrine pancreatic blood flow, whereas islets are less affected. A notable exception is incretin hormones and adipokines, which preferentially affect islet vasculature. Islet hormones can influence both exocrine and endocrine blood vessels, and these complex effects are discussed. Secondary changes in pancreatic and islet blood flow occur during several conditions. To what extent changes in blood perfusion may affect the pathogenesis of pancreatic diseases is discussed. Both type 2 diabetes mellitus and acute pancreatitis are conditions where we think there is evidence that blood flow may contribute to disease manifestations. © 2019 American Physiological Society. Compr Physiol 9:799-837, 2019.
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Affiliation(s)
- Leif Jansson
- Uppsala University, Department of Medical Cell Biology, Uppsala, Sweden
| | - Per-Ola Carlsson
- Uppsala University, Department of Medical Cell Biology, Uppsala, Sweden.,Uppsala University, Department of Medical Sciences, Uppsala, Sweden
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32
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Anthocyanins from Cornus kousa ethanolic extract attenuate obesity in association with anti-angiogenic activities in 3T3-L1 cells by down-regulating adipogeneses and lipogenesis. PLoS One 2018; 13:e0208556. [PMID: 30521605 PMCID: PMC6283641 DOI: 10.1371/journal.pone.0208556] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Accepted: 11/19/2018] [Indexed: 12/16/2022] Open
Abstract
Cornus kousa the Korean dogwood has been traditionally used in East Asia as therapeutic traditional medicine however biological activities of Cornus kousa have not been investigated previously. The aim of the present study was to evaluate anti-obesity activities coupled with anti-angiogenic activities of anthocyanins rich fraction of ethanolic leaf extract of Cornus kousa (ELECk) in HUVECs and 3T3- L1 cells. Dried plants leaves were extracted with 70% ethanol and anthocyanin fraction (AnT Fr) was obtained by eluting the ethanolic extract through non-polar macroporous resin and further purification by HPLC. Antiangiogenic activities were determined by antiproliferative effect of AnT Fr on HUVECs. In the presence of various concentrations of AnT Fr, 3T3-L1 preadipocytes were induced to differentiate. Lipid accumulation in differentiated adipocytes were quantified by Oil-Red O staining. AnT Fr significantly suppressed angiogenesis by inhibiting proliferation and tube formation of HUVECs via downregulating VEGRF 2, PI3K, β-catenin, NF-kB, and Akt1 in a dose dependent manner. AnT Fr inhibited lipid accumulation by down-regulating adipogenesis and lipogenesis promoting signaling proteins, PPARγ, CCAAT, C/EBPα, aP2, FAS, and LPL, however enhanced AMPK activation to p-AMPK in 3T3 cells quantified and expressed by western blotting. AnT Fr inhibit lipid accumulation by regulating adipogenesis and lipogenesis related genes and signaling proteins. The anti-obesity activities exerted by Cornus kousa are associated with antiangiogenic activities of anthocyanins rich fraction of Cornus kousa. Hence the presence of bioactive anthocyanins, Cornus kosa, is a good candidate for nutraceutical and pharmaceutical formulation for treating or controlling obesity.
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33
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Gur S, Abdel-Mageed AB, Sikka SC, Hellstrom WJG. Advances in stem cell therapy for erectile dysfunction. Expert Opin Biol Ther 2018; 18:1137-1150. [PMID: 30301368 DOI: 10.1080/14712598.2018.1534955] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Stem cell (SC) application is a promising area of research in regenerative medicine, with the potential to treat, prevent, and cure disease. In recent years, the number of studies focusing on SCs for the treatment of erectile dysfunction (ED) and other sexual dysfunctions has increased significantly. AREAS COVERED This review includes critical ED targets and preclinical studies, including the use of SCs and animal models in diabetes, aging, cavernous nerve injury, and Peyronie's disease. A literature search was performed on PubMed for English articles. EXPERT OPINION Combination treatment offers better results than monotherapy to improve pathological changes in diabetic ED. Regenerative medicine is a promising approach for the maintenance of sexual health and erectile function later in life. Cavernous nerve regeneration and vascular recovery employing SC treatment may be focused on radical prostatectomy-induced ED. Notwithstanding, there are a number of hurdles to overcome before SC-based therapies for ED are considered in clinical settings. Paracrine action, not cellular differentiation, appears to be the principal mechanism of action underlying SC treatment of ED. Intracavernosal injection of a single SC type should be the choice protocol for future clinical trials.
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Affiliation(s)
- Serap Gur
- a Department of Urology , Tulane University Health Sciences Center , New Orleans , LA , USA.,b Department of Pharmacology, Faculty of Pharmacy , Ankara University , Ankara , Turkey
| | - Asim B Abdel-Mageed
- a Department of Urology , Tulane University Health Sciences Center , New Orleans , LA , USA
| | - Suresh C Sikka
- a Department of Urology , Tulane University Health Sciences Center , New Orleans , LA , USA
| | - Wayne J G Hellstrom
- a Department of Urology , Tulane University Health Sciences Center , New Orleans , LA , USA
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34
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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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35
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Low-level laser irradiation modifies the effect of hyperglycemia on adhesion molecule levels. Lasers Med Sci 2018; 33:1521-1526. [PMID: 29725945 DOI: 10.1007/s10103-018-2511-z] [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: 04/12/2017] [Accepted: 04/17/2018] [Indexed: 10/17/2022]
Abstract
Endothelium plays a key role in maintaining vascular homeostasis by secreting active factors involved in many biological processes such as hemostasis, angiogenesis, and inflammation. Hyperglycemia in diabetic patients causes dysfunction of endothelial cells. Soluble fractions of adhesion molecules like sE-selectin and vascular cell adhesion molecule (sVCAM) are considered as markers of endothelial damage. The low-level laser therapy (LLLT) effectively supports the conventional treatment of vascular complications in diabetes, for example hard-to-heal wounds in patients with diabetic foot syndrome. The aim of our study was to evaluate the effect of low-energy laser at the wavelength of 635 nm (visible light) and 830 nm (infrared) on the concentration of adhesion molecules: sE-selectin and sVCAM in the supernatant of endothelial cell culture of HUVEC line. Cells were cultured under high-glucose conditions of 30 mM/L. We have found an increase in sE-selectin and sVCAM levels in the supernatant of cells cultured under hyperglycemic conditions. This fact confirms detrimental influence of hyperglycemia on vascular endothelial cell cultures. LLLT can modulate the inflammation process. It leads to a decrease in sE-selectin and sVCAM concentration in the supernatant and an increase in the number of endothelial cells cultured under hyperglycemic conditions. The influence of LLLT is greater at the wavelength of 830 nm.
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36
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Indices of insulin resistance and glucotoxicity are not associated with bipolar disorder or major depressive disorder, but are differently associated with inflammatory, oxidative and nitrosative biomarkers. J Affect Disord 2017; 222:185-194. [PMID: 28710952 DOI: 10.1016/j.jad.2017.07.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 06/28/2017] [Accepted: 07/05/2017] [Indexed: 12/21/2022]
Abstract
BACKGROUND Insulin resistance (IR) is a key factor in diabetes mellitus, metabolic syndrome (MetS) and obesity and may occur in mood disorders and tobacco use disorder (TUD), where disturbances of immune-inflammatory, oxidative and nitrosative stress (IO&NS) pathways are important shared pathophysiological pathways. METHODS This study aimed to a) examine IR and β-cell function as measured by the homeostasis model assessment of insulin resistance (HOMA-IR) and insulin sensitivity and β cell function (HOMA-B) and glucotoxicity (conceptualized as increased glucose levels versus lowered HOMA-B values) in 74 participants with major depressive disorder (MDD) and bipolar disorder, with and or without MetS and TUD, versus 46 healthy controls, and b) whether IR is associated with IO&NS biomarkers, including nitric oxide metabolites (NOx), lipid hydroperoxides (LOOH), plasma advanced oxidation protein products (AOPP), C-reactive protein (CRP), haptoglobin (Hp) and uric acid. RESULTS Mood disorders are not associated with changes in IR or glucotoxicity, although the number of mood episodes may increase IR. 47.8% of the variance in HOMA-IR is explained by AOPP and body mass index (BMI, both positively) and NOx, Hp and TUD (all inversely). 43.2% of the variance in HOMA-B is explained by NOx, Hp and age (all inversely associated) and higher BMI and sex. The glucotoxic index is strongly associated with NOx, Hp and BMI (positively), male gender and lower education. LIMITATIONS This is a cross-sectional study and therefore we cannot draw firm conclusions on causal associations. CONCLUSIONS Activated IO&NS pathways (especially increased Hp and NOx) increase glucotoxicity and exert very complex effects modulating IR. Mood disorders are not associated with increased IR.
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37
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Di M, Wang L, Li M, Zhang Y, Liu X, Zeng R, Wang H, Chen Y, Chen W, Zhang Y, Zhang M. Dickkopf1 destabilizes atherosclerotic plaques and promotes plaque formation by inducing apoptosis of endothelial cells through activation of ER stress. Cell Death Dis 2017; 8:e2917. [PMID: 28703797 PMCID: PMC5550842 DOI: 10.1038/cddis.2017.277] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 04/10/2017] [Accepted: 04/13/2017] [Indexed: 12/13/2022]
Abstract
Several clinical studies reported that Dickkopf1 (DKK1) plasma levels are correlated with atherosclerosis. However, the impact of DKK1 on the formation and vulnerability of atherosclerotic plaques remains elusive. This study investigated DKK1’s effects on enlargement and destabilization of plaques by targeting endothelial cells and assessing the possible cellular mechanisms involved. The effects of DKK1 on atherogenesis and plaque stability were evaluated in ApoE−/− mice using lentivirus injections to knockdown and knock-in the DKK1 gene. The presence of DKK1 resulted in enlarged and destabilized atherosclerotic lesions and increased apoptosis, while silencing of DKK1 alleviated plaque formation and vulnerability in the whole progression of atherosclerosis. DKK1 expression was upregulated in response to ox-LDL treatment in a time- and concentration-dependent manner on human umbilical vein endothelial cell (HUVEC). The interference of DKK1 reversed ox-LDL-induced apoptosis in HUVECs. The mechanism underlying this effect was DKK1’s activation of the JNK signal transduction pathway and inhibition of canonical Wnt signaling, following by activation of the IRE1α and eif2α/CHOP pathways. In conclusion, DKK1 promotes plaque formation and vulnerability partly by inducing apoptosis in endothelial cells, which partly through inducing the JNK-endoplasmic reticulum stress pathway and inhibiting canonical Wnt signaling.
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Affiliation(s)
- Mingxue Di
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Lin Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China.,Department of Gerontology, The Second Hosipital of Shandong University, Jinan 250012, China
| | - Mengmeng Li
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Yu Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Xinxin Liu
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Renya Zeng
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Han Wang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Yifei Chen
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Weijia Chen
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Yun Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
| | - Mei Zhang
- Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan 250012, China.,The State and Shandong Province Joint Key Laboratory of Translational Cardiovascular Medicine, Qilu Hospital, Shandong University, Shandong 250012, China
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Abstract
Exposure to air pollution negatively impacts cardiovascular health. Studies show that increased exposure to a number of airborne pollutants increases the risk for cardiovascular disease progression, myocardial events, and cardiovascular mortality. A hypothesized mechanism linking air pollution and cardiovascular disease is the development of systemic inflammation and endothelium dysfunction, the latter of which can result from an imbalance of vasoactive factors within the vasculature. Endothelin-1 (ET-1) is a potent peptide vasoconstrictor that plays a significant role in regulating vascular homeostasis. It has been reported that the production and function of ET-1 and its receptors are upregulated in a number of disease states associated with endothelium dysfunction including hypertension and atherosclerosis. This mini-review surveys epidemiological and experimental air pollution studies focused on ET-1 dysregulation as a plausible mechanism underlying the development of cardiovascular disease. Although alterations in ET-1 system components are observed in some studies, there remains a need for future research to clarify whether these specific changes are compensatory or causally related to vascular injury and dysfunction. Moreover, further research may test the efficacy of selective ET-1 pharmacological interventions (e.g., ETA receptor inhibitors) to determine whether these treatments could impede the deleterious impact of air pollution exposure on cardiovascular health.
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Ell J, Regn S, Buchberger AM, von Bomhard A, Stark T, Schantz JT, Storck K. Donor-dependent variances of human adipose-derived stem cells in respect to the in-vitro endothelial cell differentiation capability. Adipocyte 2017; 6:20-32. [PMID: 28452591 DOI: 10.1080/21623945.2016.1273299] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Human adipose-derived stem cells (ASC) have been shown to differentiate into mature adipocytes and to play an important role in creating the vasculature, necessary for white adipose tissue to function. To study the stimulatory capacity of ASC on endothelial progenitor cells we used a commercially available co-culture system (V2a - assay). ASC, isolated from lipoaspirates of 18 healthy patients, were co-cultured for 13 d on endothelial progenitor cells. Using anti CD31 immunostaining, cells that had undergone endothelial differentiation were quantified after the defined co-cultivation period. Endothelial cell differentiation was observed and demonstrated by an increase in area covered by CD31+ cells compared with less to no endothelial cell differentiation in negative and media-only controls. Enzyme-linked immunosorbent assay (ELISA) for vascular endothelial growth factor (VEGF) in supernatant medium collected during the co-cultivation period revealed elevated VEGF levels in the co-culture samples as compared with ASC cultures alone, whereas no increase in adiponectin was detected by ELISA. These findings help to provide further insights in the complex interplay of adipose derived cells and endothelial cells and to better understand the diversity of ASCs in respect of their stimulatory capacity to promote angiogenesis in vitro.
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Affiliation(s)
- Jascha Ell
- Department of ENT, Head and Neck Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Sybille Regn
- Department of ENT, Head and Neck Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Anna-Maria Buchberger
- Department of ENT, Head and Neck Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Achim von Bomhard
- Department of Maxillofacial Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Thomas Stark
- Department of ENT, Head and Neck Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - Jan-Thorsten Schantz
- Department of Plastic and Reconstructive Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
- School of Chemical and Biochemical Engineering, Nanyang University of Technology, Singapore
| | - Katharina Storck
- Department of ENT, Head and Neck Surgery, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
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Matrozova J, Vasilev V, Vandeva S, Elenkova A, Kirilov G, Zaharieva S. Asymmetric Dimethylarginin (ADMA) as a Marker of Endothelial Dysfunction in Primary Aldosteronism. Int J Endocrinol Metab 2016; 14:e30324. [PMID: 28123434 PMCID: PMC5237362 DOI: 10.5812/ijem.30324] [Citation(s) in RCA: 4] [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: 04/01/2016] [Revised: 09/29/2016] [Accepted: 10/24/2016] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Recent studies have revealed a higher rate of cardiovascular complications in primary aldosteronism (PA) compared to patients with essential hypertension (EH). Asymmetric dimethylarginine (ADMA) is a marker of endothelial dysfunction that could contribute to increased cardiovascular risk in patients with PA. OBJECTIVES The aim of this study was to compare the levels of ADMA among patients with PA, controls with EH and healthy participants. Methods: Serum ADMA levels were determined, using commercially available competitive enzyme-linked immunosorbent assay. METHODS Serum ADMA levels were determined, using commercially available competitive enzyme-linked immunosorbent assay. RESULTS Patients with PA had significantly higher concentrations of ADMA than healthy controls (0.488 ± 0.085 vs. 0.433 ± 0.053 μmol/L, P = 0.027). No difference was found in ADMA levels between cases with PA and EH (0.488 ± 0.085 vs. 0.476 ± 0.075 μmol/L, р = 0.636). The difference between patients with EH and normotensive controls did not reach statistical significance (P = 0.06). CONCLUSIONS The lack of difference between ADMA levels in patients with PA and EH suggests that endothelial dysfunction is more likely related to hypertension per se than to the specific etiology of elevated blood pressure.
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Affiliation(s)
- Joanna Matrozova
- Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria
| | - Vladimir Vasilev
- Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria
| | - Silvia Vandeva
- Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria
| | - Atanaska Elenkova
- Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria
| | - Georgi Kirilov
- Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria
| | - Sabina Zaharieva
- Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria
- Corresponding author: Sabina Zaharieva, Clinical Centre of Endocrinology, Medical University-Sofia, Zdrave 2 St, Sofia, Bulgaria. Tel: +35-9888930953, E-mail:
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Silva CAD, Lopes Vasconcelos-Filho FS, Serafim M, Botura E, Rocha-e-Silva RCD, Pacheco C, Marques FAO, Melo SIL. EFFECT OF HIGH-INTENSITY EXERCISE ON ENDOTHELIAL FUNCTION IN PATIENTS WITH T2DM. REV BRAS MED ESPORTE 2016. [DOI: 10.1590/1517-869220162202151254] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Introduction: Diabetes mellitus is the most common metabolic disease worldwide. Endothelial dysfunction characteristic of these patients is one of the major risk factors for atherosclerosis. Early diagnosis of endothelial dysfunction is essential for the treatment especially of non-invasive manner, such as flow mediated dilation. Physical exercise is capable of generating beneficial adaptations may improve endothelial function. Objective: Identify the effect of physical exercise, using the clinical technique of ultrasound in the assessment of the endothelial function of patients with metabolic syndrome or type 2 diabetes mellitus. Methods: Thirty-one patients with type 2 diabetes mellitus or metabolic syndrome were studied, with a mean age (± SD) of 58±6 years, randomized into three groups. The training was performed for 50 minutes, four times a week. Before and after six weeks of training, subjects performed the endurance test and a study of the endothelial function of the brachial artery by high-resolution ultrasound. Results: After hyperemia, the percentage of arterial diameter was significantly higher for the high-intensity group (HI before = 2.52±2.85mm and after = 31.81±12.21mm; LI before = 3.23±3.52mm and after = 20.61±7.76mm; controls before = 3.56±2.33mm and after = 2.43±2.14mm; p<0.05). Conclusions: The high-intensity aerobic training improved the vasodilatation response-dependent endothelium, recorded by ultrasound, in patients with metabolic syndrome and type 2 diabetes.
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Rozenberg R, Mankowski RT, van Loon LJC, Langendonk JG, Sijbrands EJG, van den Meiracker AH, Stam HJ, Praet SFE. Hyperoxia increases arterial oxygen pressure during exercise in type 2 diabetes patients: a feasibility study. Eur J Med Res 2016; 21:1. [PMID: 26744210 PMCID: PMC4705628 DOI: 10.1186/s40001-015-0194-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 12/29/2015] [Indexed: 02/18/2023] Open
Abstract
Objective The study investigated the feasibility and potential outcome measures during acute hyperoxia in type 2 diabetes patients (DM2). Methods Eleven DM2 patients (7 men and 4 women) were included in the study. The patients cycled (30 min at 20 % Wmax) whilst breathing three different supplemental oxygen flows (SOF, 5, 10, 15 L min−1). During hyperoxic exercise, arterial blood gases and intra-arterial blood pressure measurements were obtained. Results Arterial pO2 levels increased significantly (ANOVA, p < 0.05) with SOF: 13.9 ± 1.2 (0 L min−1); 18.5 ± 1.5 (5 L min−1); 21.7 ± 1.7 (10 L min−1); 24.0 ± 2.3 (15 L min−1). Heart rate (HR) and pH increased significantly after terminating administration of hyperoxic air. Conclusions An SOF of 15 L min−1 appears to be more effective than 5 or 10 L min−1. Moreover, HR, blood pressure, blood lactate and pH are not recommended as primary outcome measures.
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Affiliation(s)
- Robert Rozenberg
- Subdivision MOVEFIT-Sports Medicine, Department of Rehabilitation Medicine, Erasmus University Medical Center, Wytemaweg 80, 3000 CA, Rotterdam, The Netherlands.
| | - Robert T Mankowski
- Subdivision MOVEFIT-Sports Medicine, Department of Rehabilitation Medicine, Erasmus University Medical Center, Wytemaweg 80, 3000 CA, Rotterdam, The Netherlands.
| | - Luc J C van Loon
- Department of Human Movement Sciences, NUTRIM School for Nutrition, Toxicology and Metabolism, Maastricht University Medical Centre, Universiteitssingel 50, 6229 ER, Maastricht, The Netherlands.
| | - Janneke G Langendonk
- Section of Pharmacology, Vascular and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Center, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands.
| | - Eric J G Sijbrands
- Section of Pharmacology, Vascular and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Center, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands.
| | - Anton H van den Meiracker
- Section of Pharmacology, Vascular and Metabolic Diseases, Department of Internal Medicine, Erasmus University Medical Center, 's-Gravendijkwal 230, 3015 CE, Rotterdam, The Netherlands.
| | - Henk J Stam
- Subdivision MOVEFIT-Sports Medicine, Department of Rehabilitation Medicine, Erasmus University Medical Center, Wytemaweg 80, 3000 CA, Rotterdam, The Netherlands.
| | - Stephan F E Praet
- Subdivision MOVEFIT-Sports Medicine, Department of Rehabilitation Medicine, Erasmus University Medical Center, Wytemaweg 80, 3000 CA, Rotterdam, The Netherlands.
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Qiang G, Wenzhai C, Huan Z, Yuxia Z, Dongdong Y, Sen Z, Qiu C. Effect of Sancaijiangtang on plasma nitric oxide and endothelin-1 levels in patients with type 2 diabetes mellitus and vascular dementia: a single-blind randomized controlled trial. J TRADIT CHIN MED 2015; 35:375-80. [PMID: 26427105 DOI: 10.1016/s0254-6272(15)30112-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To observe the effect of Sancaijiangtang powders on plasma nitric oxide and endothelin-1 levels. We sought to identify the common pathological link and mechanism of action for Traditional Chinese medicine in type 2 diabetes mellitus and vascular dementia, and to explicate the material basis for treating the different diseases with the same method in Traditional Chinese Medicine. METHODS In total, 168 patients with type 2 diabetes mellitus and vascular dementia were enrolled in the study, and randomly divided into two groups by simple randomization. Patients in the treatment group received oral Sancaijiangtang powders with pioglitazone hydrochloride three times daily, while patients in the control group received pioglitazone hydrochloride alone. The treatment course was for 12 weeks. Mini-mental state examinations (Chinese version) and Montreal Cognitive Assessments (Beijing version) were performed, and fasting plasma glucose, fasting insulin, hemoglobin A1c, homeostasis model assessment of insulin resistance, plasma nitric oxide and endothelin-1 levels were measured before and after the treatment. RESULTS The post-treatment levels for all measurements in both groups were better than pre-treat- ment levels (P < 0.05). The post-treatment levels for all measurements in the treatment group were better than the levels measured in the control group (P < 0.05). CONCLUSION Type 2 diabetes mellitus and vascular dementia have common pathological mechanisms for insulin resistance and endothelium dysfunction. Sancaijiangtang powders could improve the release of nitric oxide and inhibit the secretion of endothelin-1. Therefore, the material basis exists for treating the different diseases with the same method in Traditional Chinese Medicine.
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Williams AS, Kang L, Wasserman DH. The extracellular matrix and insulin resistance. Trends Endocrinol Metab 2015; 26:357-66. [PMID: 26059707 PMCID: PMC4490038 DOI: 10.1016/j.tem.2015.05.006] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 05/13/2015] [Accepted: 05/14/2015] [Indexed: 12/14/2022]
Abstract
The extracellular matrix (ECM) is a highly-dynamic compartment that undergoes remodeling as a result of injury and repair. Over the past decade, mounting evidence in humans and rodents suggests that ECM remodeling is associated with diet-induced insulin resistance in several metabolic tissues. In addition, integrin receptors for the ECM have also been implicated in the regulation of insulin action. This review addresses what is currently known about the ECM, integrins, and insulin action in the muscle, liver, and adipose tissue. Understanding how ECM remodeling and integrin signaling regulate insulin action may aid in the development of new therapeutic targets for the treatment of insulin resistance and type 2 diabetes (T2D).
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Affiliation(s)
- Ashley S Williams
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA
| | - Li Kang
- Division of Cardiovascular and Diabetes Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
| | - David H Wasserman
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, USA; Mouse Metabolic Phenotyping Center, Vanderbilt University, Nashville, TN, USA.
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McCue ME, Geor RJ, Schultz N. Equine Metabolic Syndrome: A Complex Disease Influenced by Genetics and the Environment. J Equine Vet Sci 2015. [DOI: 10.1016/j.jevs.2015.03.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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MG G. Intracavernous Administration of Adipose Stem Cells: A New Technique of Treating Erectile Dysfunction in Diabetic Patient, Preliminary Report of 6 Cases. ACTA ACUST UNITED AC 2015. [DOI: 10.15406/mojcsr.2015.02.00018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bossard M, Pumpol K, van der Lely S, Aeschbacher S, Schoen T, Krisai P, Lam T, Todd J, Estis J, Risch M, Risch L, Conen D. Plasma endothelin-1 and cardiovascular risk among young and healthy adults. Atherosclerosis 2015; 239:186-91. [DOI: 10.1016/j.atherosclerosis.2014.12.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 12/22/2014] [Accepted: 12/24/2014] [Indexed: 10/24/2022]
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Kolka CM, Castro AVB, Kirkman EL, Bergman RN. Modest hyperglycemia prevents interstitial dispersion of insulin in skeletal muscle. Metabolism 2015; 64:330-7. [PMID: 25468139 PMCID: PMC4277905 DOI: 10.1016/j.metabol.2014.10.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 09/22/2014] [Accepted: 10/28/2014] [Indexed: 10/24/2022]
Abstract
UNLABELLED Insulin injected directly into skeletal muscle diffuses rapidly through the interstitial space to cause glucose uptake, but this is blocked in insulin resistance. As glucotoxicity is associated with endothelial dysfunction, the observed hyperglycemia in diet-induced obese dogs may inhibit insulin access to muscle cells, and exacerbate insulin resistance. Here we asked whether interstitial insulin diffusion is reduced in modest hyperglycemia, similar to that induced by a high fat diet. METHODS During normoglycemic (100 mg/dl) and moderately hyperglycemic (120 mg/dl) clamps in anesthetized canines, sequential doses of insulin were injected into the vastus medialis of one hindlimb; the contra-lateral limb served as a control. Plasma samples were collected and analyzed for insulin content. Lymph vessels of the hind leg were also catheterized, and lymph samples were analyzed as an indicator of interstitial insulin concentration. RESULTS Insulin injection increased lymph insulin in normoglycemic animals, but not in hyperglycemic animals. Muscle glucose uptake was elevated in response to hyperglycemia, however the insulin-mediated glucose uptake in normoglycemic controls was not observed in hyperglycemia. Modest hyperglycemia prevented intra-muscularly injected insulin from diffusing through the interstitial space reduced insulin-mediated glucose uptake. CONCLUSION Hyperglycemia prevents the appearance of injected insulin in the interstitial space, thus reducing insulin action on skeletal muscle cells.
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MESH Headings
- Absorption, Physiological
- Animals
- Biological Transport/drug effects
- Diffusion
- Dogs
- Dose-Response Relationship, Drug
- Extracellular Space/chemistry
- Glucose/metabolism
- Glucose Clamp Technique
- Hindlimb
- Hyperglycemia/blood
- Hyperglycemia/drug therapy
- Hyperglycemia/metabolism
- Hyperglycemia/physiopathology
- Hypoglycemic Agents/administration & dosage
- Hypoglycemic Agents/metabolism
- Hypoglycemic Agents/pharmacokinetics
- Hypoglycemic Agents/therapeutic use
- Injections, Intramuscular
- Insulin Resistance
- Insulin, Regular, Pork/administration & dosage
- Insulin, Regular, Pork/analysis
- Insulin, Regular, Pork/pharmacokinetics
- Insulin, Regular, Pork/therapeutic use
- Lymph/chemistry
- Lymph/drug effects
- Male
- Quadriceps Muscle/chemistry
- Quadriceps Muscle/drug effects
- Quadriceps Muscle/metabolism
- Severity of Illness Index
- Tissue Distribution
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Affiliation(s)
- Cathryn M Kolka
- Department of Physiology and Biophysics, University of Southern California, Los Angeles, CA.
| | - Ana Valeria B Castro
- Department of Physiology and Biophysics, University of Southern California, Los Angeles, CA
| | - Erlinda L Kirkman
- Department of Physiology and Biophysics, University of Southern California, Los Angeles, CA
| | - Richard N Bergman
- Department of Physiology and Biophysics, University of Southern California, Los Angeles, CA
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Ruszkowska-Ciastek B, Sokup A, Socha MW, Ruprecht Z, Hałas L, Góralczyk B, Góralczyk K, Gadomska G, Rość D. A preliminary evaluation of VEGF-A, VEGFR1 and VEGFR2 in patients with well-controlled type 2 diabetes mellitus. J Zhejiang Univ Sci B 2015; 15:575-81. [PMID: 24903995 DOI: 10.1631/jzus.b1400024] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Decompensated chronic hyperglycemia often leads to late microvascular complications such as retinopathy, diabetic foot syndrome, and diabetic kidney disease. The aim of this study was to determine the concentration of vascular endothelial growth factor A (VEGF-A) and its receptors in patients with well-controlled diabetes. METHODS The study was conducted on 31 patients with well-controlled type 2 diabetes without micro- or macroangiopathy. Thirty healthy volunteers were enrolled in a control group. Serum concentrations of VEGF-A, VEGF receptors 1 and 2 (VEGFR1 and VEGFR2), fasting glucose, and lipid profiles were measured, and the plasma concentration of glycated hemoglobin (HbA1c) was determined. RESULTS No significant differences were observed between the concentration of VEGF-A, VEGFR1 or VEGFR2 in the subject group and that in the control group. Positive correlations were noted between the levels of VEGF-A, VEGFR2, and triglyceride, and there was a negative correlation between the levels of VEGFR2 and high-density lipoprotein (HDL)-cholesterol in the study group. CONCLUSIONS The concentrations of VEGF-A and its receptors 1 and 2 in patients with well-controlled diabetes are comparable to those of healthy individuals, which may indicate that appropriate control of glucose levels delays the occurrence of vascular complications. A negative correlation between VEGFR2 and HDL-cholesterol levels, and positive correlations between VEGF-A, VEGFR2, and triglyceride levels, suggest that lipid abnormalities occurring in diabetes may be involved in the modulation of angiogenesis.
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Affiliation(s)
- Barbara Ruszkowska-Ciastek
- Department of Pathophysiology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland; Department of Obstetrics, Gynecology and Oncological Gynecology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland; Department of Endocrinology and Diabetology, Collegium Medicum in Bydgoszcz, Nicolaus Copernicus University in Toruń, Poland
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Qian S, Huang H, Tang Q. Brown and beige fat: the metabolic function, induction, and therapeutic potential. Front Med 2015; 9:162-72. [DOI: 10.1007/s11684-015-0382-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2014] [Accepted: 10/16/2014] [Indexed: 12/27/2022]
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