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Asghari K, Shargh Z, Fatehfar S, Chodari L, Sameei P. The impact of zinc on the molecular signaling pathways in the diabetes disease. J Trace Elem Med Biol 2022; 72:126985. [PMID: 35429747 DOI: 10.1016/j.jtemb.2022.126985] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 03/14/2022] [Accepted: 04/07/2022] [Indexed: 01/11/2023]
Abstract
Since there's been an upsurge in people with diabetes or pre-diabetes conditions, many studies have been conducted to evaluate approaches for reducing the complications of diabetes. One of the most common therapeutic elements suggested for this purpose is zinc (Zn). Zn has long been shown to positively improve complications of both type 1 and type 2 diabetes. This review aims to provide comprehensive information about the influence of Zn on the various signaling pathways in multiple tissues with diabetic conditions, with great attention to the treatment period and effective dose of Zn.
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Affiliation(s)
- Keyvan Asghari
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
| | - Zahra Shargh
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
| | - Sina Fatehfar
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran
| | - Leila Chodari
- Neurophysiology Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran; Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran.
| | - Parsa Sameei
- Student Research Committee, Urmia University of Medical Sciences, Urmia, Iran.
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2
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Mikłosz A, Łukaszuk B, Chabowski A, Górski J. Treadmill Running Changes Endothelial Lipase Expression: Insights from Gene and Protein Analysis in Various Striated Muscle Tissues and Serum. Biomolecules 2021; 11:biom11060906. [PMID: 34204548 PMCID: PMC8234415 DOI: 10.3390/biom11060906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/04/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022] Open
Abstract
Endothelial lipase (EL) is an enzyme capable of HDL phospholipids hydrolysis. Its action leads to a reduction in the serum high-density lipoprotein concentration, and thus, it exerts a pro-atherogenic effect. This study examines the impact of a single bout exercise on the gene and protein expression of the EL in skeletal muscles composed of different fiber types (the soleus—mainly type I, the red gastrocnemius—mostly IIA, and the white gastrocnemius—predominantly IIX fibers), as well as the diaphragm, and the heart. Wistar rats were subjected to a treadmill run: (1) t = 30 [min], V = 18 [m/min]; (2) t = 30 [min], V = 28 [m/min]; (3) t = 120 [min], V = 18 [m/min] (designated: M30, F30, and M120, respectively). We established EL expression in the total muscle homogenates in sedentary animals. Resting values could be ordered with the decreasing EL protein expression as follows: endothelium of left ventricle > diaphragm > red gastrocnemius > right ventricle > soleus > white gastrocnemius. Furthermore, we observed that even a single bout of exercise was capable of inducing changes in the mRNA and protein level of EL, with a clearer pattern observed for the former. After 30 min of running at either exercise intensity, the expression of EL transcript in all the cardiovascular components of muscles tested, except the soleus, was reduced in comparison to the respective sedentary control. The protein content of EL varied with the intensity and/or duration of the run in the studied whole tissue homogenates. The observed differences between EL expression in vascular beds of muscles may indicate the muscle-specific role of the lipase.
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Affiliation(s)
- Agnieszka Mikłosz
- Department of Physiology, Medical University of Bialystok, 12-222 Bialystok, Poland; (B.Ł.); (A.C.)
- Correspondence: ; Tel.: +48-85-746-55-85
| | - Bartłomiej Łukaszuk
- Department of Physiology, Medical University of Bialystok, 12-222 Bialystok, Poland; (B.Ł.); (A.C.)
| | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, 12-222 Bialystok, Poland; (B.Ł.); (A.C.)
| | - Jan Górski
- Department of Basic Sciences, Lomza State University of Applied Sciences, 18-400 Lomza, Poland;
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Rajamanickam A, Munisankar S, Menon PA, Nutman TB, Babu S. Diminished circulating levels of angiogenic factors and RAGE ligands in helminth-diabetes comorbidity and reversal following anthelmintic treatment. J Infect Dis 2021; 224:1614-1622. [PMID: 33822083 DOI: 10.1093/infdis/jiab170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/29/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Various epidemiological and experimental studies propose that helminths could play a preventive role against the progression of Type 2 diabetes mellitus (T2DM). T2DM induces microvascular and large vessel complications mediated by elevated levels of angiogenic factors and soluble RAGE ligands. However, the interactions between helminths and host angiogenic factors and RAGE ligands are unexplored. METHODS To assess the relationship between a soil-transmitted helminth, Strongyloides stercoralis (Ss) and T2DM, we measured plasma levels of VEGF-A, C, D, Angio-1 and Angio-2 and their receptors VEGF-R1, R2 and R3 as well as sRAGE and their ligands AGE, S100A12 and HMBG-1 in individuals with T2DM with Ss+ or without Ss infection (Ss-). In Ss+ individuals, we also measured the levels of aforementioned factors 6 months following anthelmintic therapy. RESULTS Ss+ individuals exhibited significantly decreased levels of VEGF-A, C, D, Angio-1 and Angio-2 and their soluble receptors VEGF-R1, R2 and R3, that increased following anthelmintic therapy. Likewise, Ss+ individuals exhibited significantly decreased levels of AGE and their ligands sRAGE, S100A12 and HMBG-1 which reversed following anthelmintic therapy. CONCLUSION Our data suggest that Ss infection could play a beneficial role by limiting or delaying the T2DM related vascular complications.
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Affiliation(s)
- Anuradha Rajamanickam
- National Institute of Health-NIRT-International Center for Excellence in Research, Chennai, India
| | - Saravanan Munisankar
- National Institute of Health-NIRT-International Center for Excellence in Research, Chennai, India
| | - Pradeep A Menon
- National Institute for Research in Tuberculosis, Chennai, India
| | - Thomas B Nutman
- Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Subash Babu
- National Institute of Health-NIRT-International Center for Excellence in Research, Chennai, India and Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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Karwi QG, Ho KL, Pherwani S, Ketema EB, Sun QY, Lopaschuk GD. Concurrent diabetes and heart failure: interplay and novel therapeutic approaches. Cardiovasc Res 2021; 118:686-715. [PMID: 33783483 DOI: 10.1093/cvr/cvab120] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 03/29/2021] [Indexed: 12/12/2022] Open
Abstract
Diabetes mellitus increases the risk of developing heart failure, and the co-existence of both diseases worsens cardiovascular outcomes, hospitalization and the progression of heart failure. Despite current advancements on therapeutic strategies to manage hyperglycemia, the likelihood of developing diabetes-induced heart failure is still significant, especially with the accelerating global prevalence of diabetes and an ageing population. This raises the likelihood of other contributing mechanisms beyond hyperglycemia in predisposing diabetic patients to cardiovascular disease risk. There has been considerable interest in understanding the alterations in cardiac structure and function in the diabetic patients, collectively termed as "diabetic cardiomyopathy". However, the factors that contribute to the development of diabetic cardiomyopathies is not fully understood. This review summarizes the main characteristics of diabetic cardiomyopathies, and the basic mechanisms that contribute to its occurrence. This includes perturbations in insulin resistance, fuel preference, reactive oxygen species generation, inflammation, cell death pathways, neurohormonal mechanisms, advanced glycated end-products accumulation, lipotoxicity, glucotoxicity, and posttranslational modifications in the heart of the diabetic. This review also discusses the impact of antihyperglycemic therapies on the development of heart failure, as well as how current heart failure therapies influence glycemic control in diabetic patients. We also highlight the current knowledge gaps in understanding how diabetes induces heart failure.
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Affiliation(s)
- Qutuba G Karwi
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Kim L Ho
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Simran Pherwani
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Ezra B Ketema
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Qiu Yu Sun
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Gary D Lopaschuk
- Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
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Song Y, Yang J, Jing W, Wang Q, Liu Y, Cheng X, Ye F, Tian J, Wei F, Ma S. Systemic elucidation on the potential bioactive compounds and hypoglycemic mechanism of Polygonum multiflorum based on network pharmacology. Chin Med 2020; 15:121. [PMID: 33292335 PMCID: PMC7672844 DOI: 10.1186/s13020-020-00401-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 11/06/2020] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Diabetes is a complex metabolic disease characterized by hyperglycemia, plaguing the whole world. However, the action mode of multi-component and multi-target for traditional Chinese medicine (TCM) could be a promising treatment of diabetes mellitus. According to the previous research, the TCM of Polygonum multiflorum (PM) showed noteworthy hypoglycemic effect. Up to now, its hypoglycemic active ingredients and mechanism of action are not yet clear. In this study, network pharmacology was employed to elucidate the potential bioactive compounds and hypoglycemic mechanism of PM. METHODS First, the compounds with good pharmacokinetic properties were screened from the self-established library of PM, and the targets of these compounds were predicted and collected through database. Relevant targets of diabetes were summarized by searching database. The intersection targets of compound-targets and disease-targets were obtained soon. Secondly, the interaction net between the compounds and the filtered targets was established. These key targets were enriched and analyzed by protein-protein interactions (PPI) analysis, molecular docking verification. Thirdly, the key genes were used to find the biologic pathway and explain the therapeutic mechanism by genome ontology (GO) and kyoto encyclopedia of genes and genomes (KEGG) analysis. Lastly, the part of potential bioactive compounds were under enzyme activity inhibition tests. RESULTS In this study, 29 hypoglycemic components and 63 hypoglycemic targets of PM were filtrated based on online network database. Then the component-target interaction network was constructed and five key components resveratrol, apigenin, kaempferol, quercetin and luteolin were further obtained. Sequential studies turned out, AKT1, EGFR, ESR1, PTGS2, MMP9, MAPK14, and KDR were the common key targets. Docking studies indicated that the bioactive compounds could stably bind the pockets of target proteins. There were 38 metabolic pathways, including regulation of lipolysis in adipocytes, prolactin signaling pathway, TNF signaling pathway, VEGF signaling pathway, FoxO signaling pathway, estrogen signaling pathway, linoleic acid metabolism, Rap1 signaling pathway, arachidonic acid metabolism, and osteoclast differentiation closely connected with the hypoglycemic mechanism of PM. And the enzyme activity inhibition tests showed the bioactive ingredients have great hypoglycemic activity. CONCLUSION In summary, the study used systems pharmacology to elucidate the main hypoglycemic components and mechanism of PM. The work provided a scientific basis for the further hypoglycemic effect research of PM and its monomer components, but also provided a reference for the secondary development of PM.
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Affiliation(s)
- Yunfei Song
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Jianbo Yang
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Wenguang Jing
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Qi Wang
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Yue Liu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China
| | - Xianlong Cheng
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China
| | - Fei Ye
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Jinying Tian
- Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Feng Wei
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China.
| | - Shuangcheng Ma
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, 102488, China.
- Institute for Control of Chinese Traditional Medicine and Ethnic Medicine, National Institutes for Food and Drug Control, Beijing, 100050, China.
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4-hydroxy-2-nonenal decreases coronary endothelial cell migration: Potentiation by aldehyde dehydrogenase 2 inhibition. Vascul Pharmacol 2020; 131:106762. [PMID: 32585188 DOI: 10.1016/j.vph.2020.106762] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 06/07/2020] [Accepted: 06/15/2020] [Indexed: 12/12/2022]
Abstract
4-hydroxynonenal (4HNE) is a reactive aldehyde, which is involved in oxidative stress associated pathogenesis. The cellular toxicity of 4HNE is mitigated by aldehyde dehydrogenase (ALDH) 2. Thus, we hypothesize that ALDH2 inhibition exacerbates 4HNE-induced decrease in coronary endothelial cell (EC) migration in vitro. To test our hypothesis, we pharmacologically inhibited ALDH2 in cultured mouse coronary ECs (MCECs) by disulfiram (DSF) (2.5 μM) before challenging the cells with different doses of 4HNE (25, 50 and 75 μM) for 4, 12, 16 and 24 h. We evaluated MCEC migration by scratch wound migration assay. 4HNE attenuated MCEC migration significantly relative to control (P < .05), which was exacerbated with DSF pretreatment (P < .05). DSF pretreatment exacerbated 4HNE-induced decrease in ALDH2 activity in MCECs. Next, we showed that 75 μM 4HNE significantly decreased the intracellular mRNA levels of vascular endothelial growth factor (VEGF), VEGF receptor 2 (VEGFR2), focal adhesion kinase (FAK) and other promigratory genes compared to control, which were further decreased by DSF pretreatment. 75 μM 4HNE also decreased the protein levels of VEGFR2, FAK, phospho-FAK, Src and paxillin in MCECs. Thus, we conclude that ALDH2 inhibition potentiates 4HNE-induced decrease in MCECs migration in vitro.
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Wadowski PP, Kautzky-Willer A, Gremmel T, Koppensteiner R, Wolf P, Ertl S, Weikert C, Schörgenhofer C, Jilma B. Sublingual microvasculature in diabetic patients. Microvasc Res 2020; 129:103971. [DOI: 10.1016/j.mvr.2019.103971] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 12/24/2019] [Accepted: 12/24/2019] [Indexed: 01/07/2023]
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8
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Shi X, Luo X, Xu X. Dimethylarginine dimethylaminohydrolase-1 contributes to exercise-induced cardiac angiogenesis in mice. Biosci Trends 2020; 14:115-122. [DOI: 10.5582/bst.2019.01351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Xiaowei Shi
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Xueting Luo
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Xin Xu
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
- Department of Exercise Rehabilitation, Shanghai University of Sport, Shanghai, China
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9
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Yazdani F, Shahidi F, Karimi P. The effect of 8 weeks of high-intensity interval training and moderate-intensity continuous training on cardiac angiogenesis factor in diabetic male rats. J Physiol Biochem 2020; 76:291-299. [PMID: 32157499 DOI: 10.1007/s13105-020-00733-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 02/13/2020] [Indexed: 01/04/2023]
Abstract
The balance of pro-angiogenic and anti-angiogenic factors has a significant role in the development of diabetic cardiomyopathy. The purpose of this study was to examine the effect of 8 weeks of high-intensity interval training (HIIT) and moderate intensity continuous training (MICT) on the myocardial angiogenic factors and histological changes in male diabetic rats. Thirty-two male Wistar rats were randomly assigned into four groups: healthy non-exercised control, diabetic (D), D + HIIT, and D+ MICT groups. Diabetes type 2 was induced by a high-fat diet for 2 weeks and a single injection of streptozotocin. Following confirmation of diabetes, animals were subjected to HIIT (90 to 95% of VO2max) or MICT (50-65% of VO2max) protocols 5 days a week for 8 weeks. Western blotting was used for detection of protein expressions of vascular endothelial growth factor (VEGF), transforming growth factor-beta (TGF-β), matrix metalloproteinase-2 (MMP2), and tissue inhibitor of matrix metalloproteinase-2 (TIMP2) in the left ventricle. In addition, baseline and final blood glucose and body weight were measured. Histological changes were evaluated using H&E and Masson's trichrome staining. The results showed that exercise increased protein levels of pro-angiogenic factors while reduced anti-angiogenic factors protein levels in diabetic animals. These changes were followed by increased capillary density and reduced interstitial fibrosis in the left ventricle. Moreover, the MICT was superior to HIIT in enhancing angiogenic factors and attenuation of blood glucose and fibrosis in the diabetic rats. These findings confirm the effectiveness of exercise, particularly MICT, in the improvement of diabetic cardiomyopathy.
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Affiliation(s)
- Faramarz Yazdani
- Department of Physiology, Faculty of Physical Education and Sport Sciences, Shahid Rajaee Teacher Training University, Tehran, Iran
| | - Fereshteh Shahidi
- Department of Physiology, Faculty of Physical Education and Sport Sciences, Shahid Rajaee Teacher Training University, Tehran, Iran.
| | - Pouran Karimi
- Neurosciences Research Center (NSRC), Tabriz University of Medical Sciences, Tabriz, Iran
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10
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Sadek NB, Gamal SM, Aboulhoda BE, Rashed LA, Shawky HM, Gamal El-Din MM. The Potential Role of Undercarboxylated Osteocalcin Upregulation in Microvascular Insufficiency in a Rat Model of Diabetic Cardiomyopathy. J Cardiovasc Pharmacol Ther 2019; 25:86-97. [PMID: 31533469 DOI: 10.1177/1074248419876632] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is accompanied by microvascular complications that lead to myocardial dysfunction and heart failure. Most conventional therapies cannot ameliorate the microvascular insufficiency in DCM. In this study, we tested the hypothesis that undercarboxylated osteocalcin (ucOC) may be a new adjuvant therapy against the progression of DCM and its underlying microvascular pathology. MATERIALS AND METHODS Diabetes was induced in Wistar rats with a high-fat diet combined with streptozotocin injections, and ucOC was upregulated after warfarin administration in the treated group. After 8 weeks, cardiac functions were assessed using a Langendorff apparatus. Cardiac tissue samples were also extracted to assess the ucOC receptor and vascular endothelial growth factor (VEGF) for histopathological studies. RESULTS Both the systolic and the diastolic dysfunction observed in the DCM group were significantly improved after the increase in ucOC blood levels. Significant improvement in VEGF and CD31 expression after warfarin injection was associated with increased capillary density, neovascularization, and decreased myocardial fibrosis together with the reestablishment of myocardial structural and ultrastructural patterns. CONCLUSION Undercarboxylated osteocalcin may have a promising effect in improving microvascular insufficiency and myocardial dysfunction in DCM.
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Affiliation(s)
- Nermeen B Sadek
- Faculty of Medicine, Department of Physiology, Cairo University, Cairo, Egypt
| | - Sarah M Gamal
- Faculty of Medicine, Department of Physiology, Cairo University, Cairo, Egypt
| | - Basma E Aboulhoda
- Faculty of Medicine, Department of Anatomy and Embryology, Cairo University, Cairo, Egypt
| | - Laila A Rashed
- Faculty of Medicine, Department of Biochemistry, Cairo University, Cairo, Egypt
| | - Heba M Shawky
- Faculty of Medicine, Department of Physiology, Cairo University, Cairo, Egypt
| | - Maha M Gamal El-Din
- Faculty of Medicine, Department of Physiology, Cairo University, Cairo, Egypt
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Landers-Ramos RQ, Blumenthal JB, Prior SJ. Serum IL-6 and sIL-6R in type 2 diabetes contribute to impaired capillary-like network formation. J Appl Physiol (1985) 2019; 127:385-392. [PMID: 31219767 DOI: 10.1152/japplphysiol.00002.2019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
We hypothesized that the serum from individuals with type 2 diabetes mellitus (T2DM) and impaired glucose tolerance (IGT) would reduce in vitro capillary-like network formation compared with normal glucose tolerance (NGT) serum and that this would occur along with higher serum concentrations of inflammatory cytokines and lower concentrations of angiogenic growth factors. Subjects were sedentary, older (55-65 yr) adults with NGT, IGT, or T2DM (n = 10/group) matched for body mass index. Human retroviral telomerized endothelial cells (HRVT-ECs) or coronary artery endothelial cells (CECs) were used in a capillary-like network formation assay using endothelial basal medium supplemented with 7.5% serum. Quantification of HRVT-EC network length indicated that serum from the T2DM group resulted in 32 and 35% lower network formation than when using serum from the NGT and IGT groups, respectively (P < 0.05). Serum from T2DM subjects resulted in CEC network formation that was 11 and 8% lower than when using serum from NGT and IGT subjects, respectively (P < 0.05). Analysis of serum cytokines indicated that IL-6 was 41% and 49% higher in the IGT and T2DM groups, respectively, compared with the NGT group (P < 0.05) and there was a trend for higher soluble interleukin-6 receptor (sIL-6R; P = 0.06) and IL-8 (P = 0.08) in the T2DM serum compared with NGT. The use of recombinant IL-6 and sIL-6R at concentrations detected in the T2DM serum also reduced capillary network formation compared with NGT concentrations (P < 0.05). These results suggest that IL-6 and sIL-6R present in the serum of T2DM individuals impair in vitro endothelial cell function across different cell lines. Our findings may have implications for the microvascular complications associated with T2DM.NEW & NOTEWORTHY Higher concentrations of serum factors, specifically Interleukin-6 and its soluble receptor found in individuals with type 2 diabetes (T2DM) appear to impair endothelial cell capillary-like network formation compared with those present in serum from individuals with impaired glucose tolerance and normal glucose tolerance. This may have implications for the vascular complications associated with T2DM.
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Affiliation(s)
- Rian Q Landers-Ramos
- Department of Kinesiology, Towson University, Towson, Maryland.,Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimore, Maryland
| | - Jacob B Blumenthal
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimore, Maryland
| | - Steven J Prior
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland.,Baltimore Veterans Affairs Geriatric Research, Education and Clinical Center, Baltimore, Maryland.,Department of Kinesiology, University of Maryland School of Public Health, College Park, Maryland
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12
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Zanjani SB, Chodari L, Bavil FM, Sadeghzadeh P, Shahabi P. Effect of voluntary exercise on intracellular signalling pathways of angiogenesis in the sciatic nerve of type 1 diabetic castrated male rats. Physiol Int 2019; 106:39-47. [DOI: 10.1556/2060.106.2019.08] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Objectives
Impaired angiogenesis in sciatic nerve is a major complication of diabetic neuropathy. Protein kinase B (AKT) and extracellular signal regulated kinase (ERK) signaling pathways play critical roles during capillary-like network formation in the angiogenesis process.
Methods
Twenty-four adult male Wistar rats (weight: 250–300 g) were used in the research. The rats were randomly divided into four groups (n = 6): (1) diabetic (Dia), (2) diabetic + castration (Dia-Cas), (3) diabetic + exercise (Dia-E), and (4) diabetic + castration + exercise (Dia-Cas-E). Type 1 diabetes (T1D) was induced with streptozotocin (50 mg/kg). After 6 weeks, sciatic nerve was separated and used for histological evaluation and determination of phosphorylated AKT (P-AKT) and phosphorylated ERK (P-ERK) levels by ELISA method.
Results
Glucose levels decreased in the Dia-E group compared to the Dia-Cas group (p < 0.01). In addition, our finding shows that exercise in the Dia-Cas group diminished blood glucose levels compared to the Dia-Cas group but this effect of exercise was not significant. Voluntary exercise in the diabetic castrated group decreased P-AKT protein and increased P-ERK 1/2 protein levels in the sciatic tissue compared to the diabetes group significantly (p < 0.05). Histopathological findings showed that Dia-Cas group with 6-week exercise training significantly raised the number of microvascular density in the sciatic tissue of diabetic rats compared to the diabetic group (p < 0.05).
Conclusions
Voluntary exercise in diabetic rats increases angiogenesis in the sciatic nerve. The possible mechanism is the increase of P-ERK 1/2 but not P-AKT levels in the sciatic nerve of T1D rats.
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Affiliation(s)
- SB Zanjani
- 1 Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - L Chodari
- 2 Department of Physiology, Urmia University of Medical Sciences, Urmia, Iran
- 3 Neurophysiology Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - FM Bavil
- 4 Laboratory of Physiology, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - P Sadeghzadeh
- 4 Laboratory of Physiology, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - P Shahabi
- 1 Department of Physiology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
- 4 Laboratory of Physiology, Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Naderi R, Mohaddes G, Mohammadi M, Alihemmati A, Khamaneh A, Ghyasi R, Ghaznavi R. The Effect of Garlic and Voluntary Exercise on Cardiac Angiogenesis in Diabetes: The Role of MiR-126 and MiR-210. Arq Bras Cardiol 2018; 112:154-162. [PMID: 30570073 PMCID: PMC6371831 DOI: 10.5935/abc.20190002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 08/02/2018] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Diabetes mellitus (DM) is one of the major risk factors for cardiovascular disease, leading to endothelial dysfunction and angiogenesis impairment . MiR-126 and miR-210 support angiogenic response in endothelial cells. OBJECTIVE The present study sought to explore the effect of garlic and voluntary exercise, alone or together, on miR-126 and miR-210 expressions and cardiac angiogenesis in rats with type 1 diabetes. METHODS Male Wistar rats were divided into five groups (n = 7): Control, Diabetes, Diabetes+Garlic, Diabetes+Exercise, and Diabetes+Garlic+Exercise. Diabetes was induced in the animals by streptozotocin (ip, 50 mg/kg). The rats were then fed raw fresh garlic homogenate (250 mg/kg) or were subjected to voluntary exercise, or to combined garlic and voluntary exercise for 6 weeks. MiR-126 and miR-210 expressions in the myocardium were determined by real time PCR, and the serum lipid profile was measured by enzymatic kits. Angiogenesis was evaluated by immunostaining for PECAM-1/ CD31 in the myocardium. RESULTS Diabetes reduced both cardiac miR-126 expression and angiogenesis (p < 0.05). On the other hand, there was a miR-210 expression increase in the myocardium of diabetic animals (p < 0.001). However, those effects reversed either with garlic or voluntary exercise (p < 0.01). Moreover, treating diabetic rats with garlic and voluntary exercise combined had an additional effect on the expressions of miR-126 and miR-210 (p < 0.001). Furthermore, both voluntary exercise and garlic significantly improved serum lipid profiles (p < 0.001). CONCLUSION The induction of diabetes decreased angiogenesis in the myocardium, whereas our treatment using long-term voluntary exercise and garlic improved myocardial angiogenesis. These changes were possibly owing to the enhancement of myocardial miR-126 and miR-210 expressions.
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Affiliation(s)
- Roya Naderi
- Nephrology and Kidney Transplant Research Center - Urmia University of Medical Sciences, Urmia - Iran.,Department of Physiology, faculty of Medicine - Urmia University of Medical Sciences, Urmia - Iran
| | - Gisou Mohaddes
- Neuroscience Research Centre of Tabriz University of Medical Sciences, Tabriz - Iran
| | - Mustafa Mohammadi
- Drug Applied Research Center of Tabriz University of Medical Sciences, Tabriz - Iran
| | - Alireza Alihemmati
- Department of Histology and Embryology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz - Iran
| | - Amirmahdi Khamaneh
- School of advanced medical sciences - Tabriz University of Medical Sciences, Tabriz - Iran
| | - Rafighe Ghyasi
- Drug Applied Research Center of Tabriz University of Medical Sciences, Tabriz - Iran
| | - Rana Ghaznavi
- Sports medicine research center, Neuroscience institute - Tehran University of Medical Sciences, Tehran - Iran
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Chodari L, Mohammadi M, Mohaddes G, Alipour MR, Ghorbanzade V, Dariushnejad H, Mohammadi S. Testosterone and Voluntary Exercise, Alone or Together Increase Cardiac Activation of AKT and ERK1/2 in Diabetic Rats. Arq Bras Cardiol 2016; 107:532-541. [PMID: 28558078 PMCID: PMC5210457 DOI: 10.5935/abc.20160174] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 08/04/2016] [Indexed: 01/03/2023] Open
Abstract
Background Impaired angiogenesis in cardiac tissue is a major complication of diabetes.
Protein kinase B (AKT) and extracellular signal regulated kinase (ERK)
signaling pathways play important role during capillary-like network
formation in angiogenesis process. Objectives To determine the effects of testosterone and voluntary exercise on levels of
vascularity, phosphorylated Akt (P- AKT) and phosphorylated ERK (P-ERK) in
heart tissue of diabetic and castrated diabetic rats. Methods Type I diabetes was induced by i.p injection of 50 mg/kg of streptozotocin in
animals. After 42 days of treatment with testosterone (2mg/kg/day) or
voluntary exercise alone or in combination, heart tissue samples were
collected and used for histological evaluation and determination of P-AKT
and P-ERK levels by ELISA method. Results Our results showed that either testosterone or exercise increased
capillarity, P-AKT, and P-ERK levels in the heart of diabetic rats.
Treatment of diabetic rats with testosterone and exercise had a synergistic
effect on capillarity, P-AKT, and P-ERK levels in heart. Furthermore, in the
castrated diabetes group, capillarity, P-AKT, and P-ERK levels significantly
decreased in the heart, whereas either testosterone treatment or exercise
training reversed these effects. Also, simultaneous treatment of castrated
diabetic rats with testosterone and exercise had an additive effect on P-AKT
and P-ERK levels. Conclusion Our findings suggest that testosterone and exercise alone or together can
increase angiogenesis in the heart of diabetic and castrated diabetic rats.
The proangiogenesis effects of testosterone and exercise are associated with
the enhanced activation of AKT and ERK1/2 in heart tissue.
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Affiliation(s)
- Leila Chodari
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mustafa Mohammadi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Gisou Mohaddes
- Neuroscience Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Vajiheh Ghorbanzade
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hassan Dariushnejad
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shima Mohammadi
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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15
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Alasvand M, Javanmard SH, Rashidi B, Khazaei M. Myocardial capillary density after neuropeptide Y antagonist administration in normal and high-fat diet C57BL6 mice. Adv Biomed Res 2016; 5:165. [PMID: 27995104 PMCID: PMC5137228 DOI: 10.4103/2277-9175.190998] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Accepted: 02/15/2016] [Indexed: 12/17/2022] Open
Abstract
Background: Neuropeptide Y (NPY), a 36 amino acid peptide, has several effects on cardiovascular system. It is demonstrated that the angiogenic activity of NPY is similar to fibroblast growth factor and vascular endothelial growth factor (VEGF). The aim of this study was to evaluate the effect of systemic administration of antagonist of NPY receptor (BIIE0742) on coronary angiogenesis in normal and diet-induced obese animals. Materials and Methods: Twenty-four male mice were received high-fat diet (HFD) or normal diet (ND) for 14 weeks. Then, each group was randomized to the treatment of antagonist of NPY receptor (BIIE0246) or saline as following: ND+ BIIE0246 (100 μl/kg; i.p.), ND+ saline, HFD+ BIIE0246, HFD+ saline. After 14 days, blood samples were taken, and myocardial tissue (left ventricle) from all experimental groups was evaluated by immunohistochemistry. Results: Serum VEGF concentration and VEGF: Soluble VEGF receptor (sVEGFR)-1 ratio in obese animals was higher than normal group. Administration of BIIE0246 significantly reduced serum VEGF and VEGF: sVEGFR-1 ratio and increased serum sVEGFR-1 concentrations in obese animals (P < 0.05). In normal animals, BIIE0246 increased serum sVEGFR-1 level and decreased VEGF: sVEGFR-1 ratio. Serum nitrite did not alter after administration of BIIE0246 in both groups (P > 0.05). Myocardial capillary density expressed as the number of CD31 positive cells/mm2 was reduced after NPY antagonist treatment in obese and normal animals (P > 0.05). Conclusion: Administration of NPY antagonist impairs myocardial capillary density, reduces angiogenic factors and elevates anti-angiogenic factors, and there are no differences between obese and normal animals.
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Affiliation(s)
- Masoud Alasvand
- Department of Physiology, Sanandaj University of Medical Sciences, Sanandaj, Iran
| | | | - Bahman Rashidi
- Department of Anatomy, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Majid Khazaei
- Neurogenic Inflammatory Research Center and Department of Physiology, Mashhad University of Medical Sciences, Mashhad, Iran
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Testosterone and Voluntary Exercise Promote Angiogenesis in Hearts of Rats with Diabetes by Enhancing Expression of VEGF-A and SDF-1a. Can J Diabetes 2016; 40:436-441. [PMID: 27444229 DOI: 10.1016/j.jcjd.2016.03.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 01/28/2016] [Accepted: 03/08/2016] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Impaired angiogenesis in cardiac tissue is a major complication of diabetes. This study was aimed to evaluate the effects of testosterone and voluntary exercise on vascular endothelial growth factor-A (VEGF-A), stromal cell-derived factor 1a (SDF-1a) and myocardial capillary density in heart of rats with diabetes. METHODS Type 1 diabetes was induced by intraperitoneal injection of 55 mg/kg of streptozotocin in 80 male Wistar rats. After 42 days of treatment with testosterone (2 mg/kg/day) or voluntary exercise alone or in combination, angiogenesis was determined in the hearts by immunostaining for PECAM-1/CD31. The expressions of VEGF-A and SDF-1a levels in heart were also determined by the ELISA method. RESULTS Our results showed that capillary density, VEGF-A and SDF-1a levels in the heart were significantly decreased in castrated rats with diabetes, whereas these effects were reversed by testosterone and exercise. Furthermore, simultaneous treatment of castrated rats with diabetes with testosterone and exercise had a synergistic effect on capillary density, VEGF-A and SDF-1a levels in the heart. In the group with diabetes, either testosterone or exercise increased capillary density, VEGF-A and SDF-1a protein levels in heart tissue. However, the effects of combination therapy in rats with diabetes with testosterone and exercise on capillary density, VEGF-A and SDF-1a levels in the heart was synergistic. CONCLUSIONS Our findings suggest that testosterone and exercise can promote neoangiogenesis in rats with diabetes and in castrated rats with diabetes. The proangiogenesis effect of testosterone and exercise is associated with the enhanced expression of VEGF-A and SDF-1a in heart tissue.
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Chen Y, Du J, Zhao YT, Zhang L, Lv G, Zhuang S, Qin G, Zhao TC. Histone deacetylase (HDAC) inhibition improves myocardial function and prevents cardiac remodeling in diabetic mice. Cardiovasc Diabetol 2015; 14:99. [PMID: 26245924 PMCID: PMC4527099 DOI: 10.1186/s12933-015-0262-8] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 07/18/2015] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Recent evidence indicates that inhibition of histone deacetylase (HDAC) protects the heart against myocardial injury and stimulates endogenous angiomyogenesis. However, it remains unknown whether HDAC inhibition produces the protective effect in the diabetic heart. We sought to determine whether HDAC inhibition preserves cardiac performance and suppresses cardiac remodeling in diabetic cardiomyopathy. METHODS Adult ICR mice received an intraperitoneal injection of either streptozotocin (STZ, 200 mg/kg) to establish the diabetic model or vehicle to serve as control. Once hyperglycemia was confirmed, diabetic mice received sodium butyrate (1%), a specific HDAC inhibitor, in drinking water on a daily basis to inhibit HDAC activity. Mice were randomly divided into following groups, which includes Control, Control + Sodium butyrate (NaBu), STZ and STZ + Sodium butyrate (NaBu), respectively. Myocardial function was serially assessed at 7, 14, 21 weeks following treatments. RESULTS Echocardiography demonstrated that cardiac function was depressed in diabetic mice, but HDAC inhibition resulted in a significant functional improvement in STZ-injected mice. Likewise, HDAC inhibition attenuates cardiac hypertrophy, as evidenced by a reduced heart/tibia ratio and areas of cardiomyocytes, which is associated with reduced interstitial fibrosis and decreases in active caspase-3 and apoptotic stainings, but also increased angiogenesis in diabetic myocardium. Notably, glucose transporters (GLUT) 1 and 4 were up-regulated following HDAC inhibition, which was accompanied with increases of GLUT1 acetylation and p38 phosphorylation. Furthermore, myocardial superoxide dismutase, an important antioxidant, was elevated following HDAC inhibition in the diabetic mice. CONCLUSION HDAC inhibition plays a critical role in improving cardiac function and suppressing myocardial remodeling in diabetic heart.
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Affiliation(s)
- Youfang Chen
- Department of Surgery, Boston University Medical School, Roger Williams Medical Center, Boston University, 50 Maude Street, Providence, RI, 02908, USA.
| | - Jianfeng Du
- Department of Surgery, Boston University Medical School, Roger Williams Medical Center, Boston University, 50 Maude Street, Providence, RI, 02908, USA.
| | - Yu Tina Zhao
- Department of Surgery, Boston University Medical School, Roger Williams Medical Center, Boston University, 50 Maude Street, Providence, RI, 02908, USA.
| | - Ling Zhang
- Department of Medicine, Rhode Island Hospital, Brown University, Providence, RI, USA.
| | - Guorong Lv
- Department of Ultrasound, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, China.
| | - Shougang Zhuang
- Department of Medicine, Rhode Island Hospital, Brown University, Providence, RI, USA.
| | - Gangjian Qin
- Feinberg Cardiovascular Research Institute, Northwestern University Feinberg School of Medicine, Chicago, USA.
| | - Ting C Zhao
- Department of Surgery, Boston University Medical School, Roger Williams Medical Center, Boston University, 50 Maude Street, Providence, RI, 02908, USA.
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Histomorphometric evaluation of the small coronary arteries in rats exposed to industrial noise. Int J Mol Sci 2015; 16:10095-104. [PMID: 25946344 PMCID: PMC4463634 DOI: 10.3390/ijms160510095] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/02/2015] [Accepted: 04/14/2015] [Indexed: 01/19/2023] Open
Abstract
Morphological changes induced by industrial noise (IN) have been experimentally observed in several organs. Histological observations of the coronary arteries showed prominent perivascular tissue and fibrosis among IN-exposed rats. The effects on the small arteries are unknown. Objective: To evaluate the histomorphometric changes induced by IN on rat heart small arteries. Methods: Twenty Wistar rats exposed to IN during a maximum period of seven months and 20 age-matched controls were studied. Hearts were transversely sectioned from ventricular apex to atria and a mid-ventricular fragment was selected for analysis. The histological images were obtained with an optical microscope using 400× magnifications. A total of 634 arterial vessels (298 IN-exposed and 336 controls) were selected. The mean lumen-to-vessel wall (L/W) and mean vessel wall-to-perivascular tissue (W/P) ratios were calculated using image J software. Results: There were no differences between exposed and control animals in their L/W ratios (p = 0.687) and time variations in this ratio were non-significant (p = 0.110). In contrast, exposed animals showed lower W/P ratios than control animals (p < 0.001), with significant time variations (p = 0.004). Conclusions: Industrial noise induced an increase in the perivascular tissue of rat small coronary arteries, with significant development of periarterial fibrosis.
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Erekat NS, Al-Jarrah MD, Al Khatib AJ. Treadmill Exercise Training Improves Vascular Endothelial Growth Factor Expression in the Cardiac Muscle of Type I Diabetic Rats. Cardiol Res 2014; 5:23-29. [PMID: 28392871 PMCID: PMC5358275 DOI: 10.14740/cr314w] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/31/2013] [Indexed: 12/31/2022] Open
Abstract
Background Vascular endothelial growth factor (VEGF) expression is a potent mitogen for endothelial cells that is involved in angiogenesis. Cardiac VEGF is decreased in many pathologic conditions, including diabetes mellitus and aging. Exercise training has improved VEGF expression in the aging heart. Thus, the aim of our study is to illustrate the impact of treadmill exercise training on the cardiac VEGF expression in type I diabetic rats. Methods Twenty normal Sprague-Dawley rats and Sprague-Dawley rats with streptozotocin-induced diabetes were divided into the following equal groups: sedentary control (SC), exercised control (EC), sedentary diabetic rats (SD) and exercised diabetic rats (ED). Immunohistochemistry was used to investigate VEGF expression in the cardiac tissue in each of the four different groups. Results Cardiac VEGF expression was significantly (P < 0.05) lower in SD compared with that in SC. However, exercise training significantly (P < 0.01) enhanced VEGF expression in the cardiac tissue in ED compared with that in SD. Conclusion Our present data suggest that treadmill exercise training improved diabetes-induced downregulation in the cardiac VEGF expression.
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Affiliation(s)
- Nour S Erekat
- Department of Anatomy, Faculty of Medicine, Jordan University of Science and Technology (JUST), Irbid, Jordan
| | - Muhammed D Al-Jarrah
- Department of Rehabilitation Sciences, Faculty of Applied Medical Sciences, JUST, Irbid, Jordan
| | - Ahed J Al Khatib
- Department of Pathology, Faculty of Medicine, JUST, Irbid, Jordan
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20
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Murdoch CE, Shuler M, Haeussler DJF, Kikuchi R, Bearelly P, Han J, Watanabe Y, Fuster JJ, Walsh K, Ho YS, Bachschmid MM, Cohen RA, Matsui R. Glutaredoxin-1 up-regulation induces soluble vascular endothelial growth factor receptor 1, attenuating post-ischemia limb revascularization. J Biol Chem 2014; 289:8633-44. [PMID: 24482236 DOI: 10.1074/jbc.m113.517219] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Glutaredoxin-1 (Glrx) is a cytosolic enzyme that regulates diverse cellular function by removal of GSH adducts from S-glutathionylated proteins including signaling molecules and transcription factors. Glrx is up-regulated during inflammation and diabetes, and Glrx overexpression inhibits VEGF-induced EC migration. The aim was to investigate the role of up-regulated Glrx in EC angiogenic capacities and in vivo revascularization in the setting of hind limb ischemia. Glrx-overexpressing EC from Glrx transgenic (TG) mice showed impaired migration and network formation and secreted higher levels of soluble VEGF receptor 1 (sFlt), an antagonizing factor to VEGF. After hind limb ischemia surgery Glrx TG mice demonstrated impaired blood flow recovery, associated with lower capillary density and poorer limb motor function compared with wild type littermates. There were also higher levels of anti-angiogenic sFlt expression in the muscle and plasma of Glrx TG mice after surgery. Noncanonical Wnt5a is known to induce sFlt. Wnt5a was highly expressed in ischemic muscles and EC from Glrx TG mice, and exogenous Wnt5a induced sFlt expression and inhibited network formation in human microvascular EC. Adenoviral Glrx-induced sFlt in EC was inhibited by a competitive Wnt5a inhibitor. Furthermore, Glrx overexpression removed GSH adducts on p65 in ischemic muscle and EC and enhanced NF-κB activity, which was responsible for Wnt5a-sFlt induction. Taken together, up-regulated Glrx induces sFlt in EC via NF-κB-dependent Wnt5a, resulting in attenuated revascularization in hind limb ischemia. The Glrx-induced sFlt explains part of the mechanism of redox-regulated VEGF signaling.
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Rocha-e-Silva M. Cardiovascular research in CLINICS. Clinics (Sao Paulo) 2013; 68:727-31. [PMID: 23778482 PMCID: PMC3674271 DOI: 10.6061/clinics/2013(06)01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Tahergorabi Z, Khazaei M. The relationship between inflammatory markers, angiogenesis, and obesity. ARYA ATHEROSCLEROSIS 2013; 9:247-53. [PMID: 23970920 PMCID: PMC3746949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 05/11/2013] [Indexed: 10/31/2022]
Abstract
Obesity is recognized as a chronic low grade and systemic inflammatory disease. Angiogenesis is critical for adipose tissue expansion. Several evidences have demonstrated that angiogenesis sustains inflammation by preparing oxygen and nutrients for inflammatory cells and inflammation in turn can cause insulin resistance, type 2 diabetes, and cardiovascular disease. The understanding of mechanisms of obesity especially main roles of inflammation and angiogenesis in fat mass expansion can lead to therapeutic approaches in growing field of obesity and its related disorders. In this review, we studied the relationship between obesity, angiogenesis, and inflammation.
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Affiliation(s)
- Zoya Tahergorabi
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Majid Khazaei
- Associate Professor, Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran
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Costa PZ, Soares R. Neovascularization in diabetes and its complications. Unraveling the angiogenic paradox. Life Sci 2013; 92:1037-45. [DOI: 10.1016/j.lfs.2013.04.001] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 03/28/2013] [Accepted: 04/01/2013] [Indexed: 01/14/2023]
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Stereological study of the diabetic heart of male rats. Lab Anim Res 2013; 29:12-8. [PMID: 23573103 PMCID: PMC3616204 DOI: 10.5625/lar.2013.29.1.12] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 02/17/2013] [Accepted: 03/01/2013] [Indexed: 01/19/2023] Open
Abstract
The present study aimed to quantitatively compare the normal and diabetic hearts of rats using stereological methods. Diabetic and control rats received streptozotocin (60 mg/kg) and no treatments, respectively. On the 56th day, the hearts were removed and their total volume was estimated using isotropic Cavalieri method. The total volume of the connective tissues and vessels, total length and diameter of the vessels, total number of cardiomyocytes nuclei, and the mean volume of the cardiomyocytes were estimated, as well. In comparison to the control animals, 60 and 43% increase was observed in the total volume of the connective tissue and microvessels of the diabetic rats, respectively (P<0.05). The percent of the vessel profiles with the diameter of 2-4 µm was decreased, while the percent of the vessel profiles with the diameter of 4.1-8 µm was increased in the diabetic hearts (P<0.05). No significant difference was found in the vessels with more than 8 µm diameters. The total number of the cardiomyocytes' nuclei and the number-weighted mean volume were respectively decreased by 37 and 64% in the diabetic group (P<0.01). A significant difference was observed between the two groups concerning the left ventricle volume to body weight ratio as an index for ventricular hypertrophy (P<0.05), while no difference was found regarding the right ventricle to body weight ratio. It can be concluded that diabetes can induce structural changes, including loss and/or atrophy of the cardiomyocytes, accompanied with increase in the connective tissue in the rats' hearts.
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Changes of serum angiogenic factors concentrations in patients with diabetes and unstable angina pectoris. Cardiovasc Diabetol 2013; 12:34. [PMID: 23421785 PMCID: PMC3598554 DOI: 10.1186/1475-2840-12-34] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 02/08/2013] [Indexed: 11/10/2022] Open
Abstract
Backgroud Diabetic microvascular changes are considered to be influenced by angiogenic factors. As a compensatory mechanism, the expression of some angiogenic factors are elevated in ischemic myocardium. The aim of this study was to investigate the changes of serum angiogenic factors, and the association among these angiogenic factors, the severity of coronary artery stenosis and collateral vessels form in patients with diabetes and unstable angina pectoris (UAP). Methods 42 patients with diabetes (diabetes group), 57 patients with UAP (UAP group), and 36 age-matched healthy people (control group) were selected. Serum concentrations of angiogenic factors were measured using cytokine array technology. The severity of coronary artery stenosis was scored using the angiographic Gensini score. Coronary collateral vessels were scored according to Rentrop's classification. Results No significant differences in the serum concentrations of vascular endothelial growth factor (VEGF), angiopoietin-1 (Ang-1), angiopoietin-2 (Ang-2), angiogenin, angiostatin, basic fibroblast growth factor (bFGF) and platelet-derived growth factor-BB (PDGF-BB) were detected between control group and diabetes group. But in patients with diabetes complicated with UAP and in patients with UAP without diabetes, serum concentrations of VEGF and Ang-2 were elevated (p < 0.01, p < 0.01). Only serum Ang-2 concentrations were significantly correlated with Gensini score (r=0.585, p < 0.001), left ventricular end diastolic diameter (r=0.501, p < 0.001), left ventricular end systolic diameter (r=0.563, p < 0.001) and left ventricular ejection fraction (r=−0.523, p < 0.001). Conclusion Serum concentrations of VEGF and Ang-2 were increased, and diabetes didn’t affect this increases in patients with UAP. Serum Ang-2 concentrations were correlated with the severity of coronary artery stenosis.
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Tahergorabi Z, Khazaei M. Imbalance of angiogenesis in diabetic complications: the mechanisms. Int J Prev Med 2012; 3:827-38. [PMID: 23272281 PMCID: PMC3530300 DOI: 10.4103/2008-7802.104853] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Accepted: 10/07/2012] [Indexed: 12/22/2022] Open
Abstract
Type 2 diabetes mellitus is a complex disease and a chronic health-care problem. Nowadays, because of alteration of lifestyle such as lack of exercise, intake of high fat diet subsequently obesity and aging population, the prevalence of diabetes mellitus is increasing quickly in around the world. The international diabetes federation estimated in 2008, that 246 million adults in worldwide suffered from diabetes mellitus and the prevalence of disease is expected to reach to 380 million by 2025. Although, mainly in management of diabetes focused on hyperglycemia, however, it is documented that abnormalities of angiogenesis may contribute in the pathogenesis of diabetes complications. Angiogenesis is the generation of new blood vessels from pre-existing ones. Normal angiogenesis depends on the intricate balance between angiogenic factors (such as VEGF, FGF2, TGF-β, angiopoietins) and angiostatic factors (angiostatin, endostatin, thrombospondins). Vascular abnormalities in different tissues including retina and kidney can play a role in pathogenesis of micro-vascular complications of diabetes; also vascular impairment contributes in macrovascular complications e.g., diabetic neuropathy and impaired formation of coronary collaterals. Therefore, identifying of different mechanisms of the diabetic complications can give us an opportunity to prevent and/or treat the following complications and improves quality of life for patients and society. In this review, we studied the mechanisms of angiogenesis in micro-vascular and macro-vascular complications of diabetes mellitus.
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Affiliation(s)
- Zoya Tahergorabi
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran
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27
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El-Sayyad HI, Al-Haggar MS, El-Ghawet HA, Bakr IH. Cardiomyopathy and angiogenesis defects of Wistar rat fetuses of diabetic and hypercholesterolemic mothers. Nutrition 2012; 28:e33-43. [DOI: 10.1016/j.nut.2011.12.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 12/22/2011] [Accepted: 12/22/2011] [Indexed: 10/28/2022]
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28
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Tahergorabi Z, Khazaei M. A review on angiogenesis and its assays. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2012; 15:1110-26. [PMID: 23653839 PMCID: PMC3646220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2011] [Accepted: 03/04/2012] [Indexed: 11/07/2022]
Abstract
Angiogenesis or formation of new blood vessels from preexisting vasculature is a key process in some physiological conditions such as wound healing, growth, and action of female reproductive organs. Moreover, disturbance of the mechanisms of physiological angiogenesis has a role in pathogenesis of some diseases in the form of overproliferation of blood vessels such as cancers, psoriasis, arthritis, retinopathies, obesity, asthma, and atherosclerosis or impaired angiogenesis participates in diseases such as heart and brain ischemia, neurodegeneration, hypertension, osteoporosis, respiratory distress, preeclampsia, endometriosis, postpartum cardiomyopathy, and ovarian hyperstimulation syndrome. Research and study in angiogenesis provide a potential to cure a variety of diseases such as cancers or cardiovascular diseases. Thus, in recent years, several methods for evaluation of angiogenesis have been introduced and selecting the most appropriate cure is very important. In this article, first, we briefly reviewed appropriate assays to evaluate therapeutic angiogenesis (clinical manipulation of angiogenesis) and its importance during some clinical diseases and then introduced in vitro, in vivo, and ex vivo assays of angiogenesis besides their benefits and disadvantages. Next, some quantitative techniques for assessing angiogenesis have been discussed.
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Affiliation(s)
- Zoya Tahergorabi
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran.
| | - Majid Khazaei
- Department of Physiology, Isfahan University of Medical Sciences, Isfahan, Iran.,Corresponding author: Tel: +98-311-7922407; Fax: +98-311-6688597;
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