1
|
Díaz-García E, Nanwani-Nanwani K, García-Tovar S, Alfaro E, López-Collazo E, Quintana-Díaz M, García-Rio F, Cubillos-Zapata C. NLRP3 Inflammasome Overactivation in Patients with Aneurysmal Subarachnoid Hemorrhage. Transl Stroke Res 2022; 14:334-346. [PMID: 35819747 PMCID: PMC10160181 DOI: 10.1007/s12975-022-01064-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/27/2022] [Accepted: 07/06/2022] [Indexed: 10/17/2022]
Abstract
Aneurysmal subarachnoid hemorrhage (aSAH) is an uncommon and severe subtype of stroke leading to the loss of many years of productive life. We analyzed NLRP3 activity as well as key components of the inflammasome cascade in monocytes and plasma from 28 patients with aSAH and 14 normal controls using flow cytometry, western blot, ELISA, and qPCR technologies. Our data reveal that monocytes from patients with aSAH present an overactivation of the NLRP3 inflammasome, which results in the presence of high plasma levels of interleukin (IL)-1β, IL-18, gasdermin D, and tissue factor. Although further research is needed, we propose that serum tissue factor concentration might be a useful prognosis biomarker for clinical outcome, and for Tako-Tsubo cardiomyopathy and cerebral vasospasm prediction. Remarkably, MCC-950 inhibitor effectively blocks NLRP3 activation in aSAH monocyte culture and supresses tissue factor release to the extracellular space. Finally, our findings suggest that NLRP3 activation could be due to the release of erythrocyte breakdown products to the subarachnoid space during aSAH event. These data define NLRP3 activation in monocytes from aSAH patients, indicating systemic inflammation that results in serum TF upregulation which in turns correlates with aSAH severity and might serve as a prognosis biomarker for aSAH clinical outcome and for cerebral vasospasm and Tako-Tsubo cardiomyopathy prediction.
Collapse
Affiliation(s)
- Elena Díaz-García
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain. .,Biomedical Research Networking Center On Respiratory Diseases (CIBERES), Madrid, Spain.
| | | | - Sara García-Tovar
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain
| | - Enrique Alfaro
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain
| | | | - Manuel Quintana-Díaz
- Department of Intensive Care Medicine, La Paz University Hospital, Madrid, Spain.,Faculty of Medicine, Autonomous University of Madrid, Madrid, Spain
| | - Francisco García-Rio
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain.,Biomedical Research Networking Center On Respiratory Diseases (CIBERES), Madrid, Spain.,Faculty of Medicine, Autonomous University of Madrid, Madrid, Spain
| | - Carolina Cubillos-Zapata
- Respiratory Diseases Group, Respiratory Service, La Paz University Hospital, IdiPAZ, Paseo de la Castellana 261, 28046, Madrid, Spain. .,Biomedical Research Networking Center On Respiratory Diseases (CIBERES), Madrid, Spain.
| |
Collapse
|
2
|
Takenouchi Y, Seki Y, Shiba S, Ohtake K, Nobe K, Kasono K. Effects of dietary palmitoleic acid on vascular function in aorta of diabetic mice. BMC Endocr Disord 2022; 22:103. [PMID: 35436932 PMCID: PMC9014575 DOI: 10.1186/s12902-022-01018-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/22/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Chronic hyperglycemia in diabetes causes atherosclerosis and progresses to diabetic macroangiopathy, and can lead to coronary heart disease, myocardial infarction and cerebrovascular disease. Palmitoleic acid (POA) is a product of endogenous lipogenesis and is present in fish and vegetable oil. In human and animal studies, POA is reported as a beneficial fatty acid related to insulin sensitivity and glucose tolerance. However, few studies have reported its effects on aortic function in diabetes. Here, we investigated the effects of POA administration on vascular function in KKAy mice, a model of type 2 diabetes. METHODS Male C57BL/6 J (control) and KKAy (experimental) mice at the age of 14 weeks were used in the present study. For each mouse strain, one group was fed with reference diet and a second group was fed POA-containing diet for 2 weeks. The vascular reactivities of prepared aortic rings were then measured in an organ bath to determine if POA administration changed vascular function in these mice. RESULTS KKAy mice treated with POA exhibited decreased plasma glucose levels compared with mice treated with reference diet. However, endothelium-dependent vasorelaxant responses to acetylcholine and protease-activated receptor 2 activating protein, which are attenuated in the aorta of KKAy mice compared to C57BL/6 J mice under a reference diet, were not affected by a 2-week POA treatment. In addition, assessment of vasoconstriction revealed that the phenylephrine-induced vasoconstrictive response was enhanced in KKAy mice compared to C57BL/6 J mice under a reference diet, but no effect was observed in KKAy mice fed a POA-containing diet. In contrast, there was an increase in vasoconstriction in C57BL/6 J mice fed the POA-containing diet compared to mice fed a reference diet. Furthermore, the vasoconstriction in aorta in both C57BL/6 J and KKAy mice fed a POA-containing diet were further enhanced under hyperglycemic conditions compared to normal glucose conditions in vitro. In the hyperinsulinemic, and hyperinsulinemic combined with hyperglycemic conditions, vasoconstriction was increased in KKAy mice fed with POA. CONCLUSION These results suggest that POA intake enhances vasoconstriction under hyperglycemic and hyperinsulinemic conditions, which are characteristics of type 2 diabetes, and may contribute to increased vascular complications in diabetes.
Collapse
Affiliation(s)
- Yasuhiro Takenouchi
- Department of Pharmacology, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, 701-0192, Japan.
- Laboratory of Physiology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan.
| | - Yoshie Seki
- Laboratory of Physiology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Sachiko Shiba
- Laboratory of Physiology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Kazuo Ohtake
- Laboratory of Physiology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan
| | - Koji Nobe
- Division of Pharmacology, Department of Pharmacology, Toxicology Therapeutics, School of Pharmacy, Showa University, Shinagawa-ku, Tokyo, 142-8555, Japan
| | - Keizo Kasono
- Laboratory of Physiology, Faculty of Pharmaceutical Sciences, Josai University, 1-1 Keyakidai, Sakado, Saitama, 350-0295, Japan.
| |
Collapse
|
3
|
Díaz-García E, García-Tovar S, Alfaro E, Jaureguizar A, Casitas R, Sánchez-Sánchez B, Zamarrón E, Fernández-Lahera J, López-Collazo E, Cubillos-Zapata C, García-Río F. Inflammasome Activation: A Keystone of Proinflammatory Response in Obstructive Sleep Apnea. Am J Respir Crit Care Med 2022; 205:1337-1348. [PMID: 35363597 DOI: 10.1164/rccm.202106-1445oc] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE As the mechanism that links obstructive sleep apnea (OSA) with the regulation of inflammatory response is not well known, it is important to understand the inflammasome activation, mainly of nucleotide-binding oligomerization domain-like receptor 3 (NLRP3). OBJECTIVES To assess the NLRP3 activity in severe OSA patients and to identify its role in the systemic inflammatory response of OSA patients. METHODS We analyzed the NLRP3 activity as well as key components of the inflammasome cascade, such as adaptor molecule apoptosis-associated speck-like protein (ASC), caspase-1, Gasdermin D (GSDMD), interleukin (IL)-1β, IL-18 and tissue factor (TF), in monocytes and plasma from patients with severe OSA and non-apneic healthy subjects. We explored the association of the different key markers with inflammatory comorbidities. MAIN RESULTS Monocytes from patients with severe OSA presented higher NLRP3 activity than those from non-apneic control subjects, which directly correlated with the apnea-hypopnea index and hypoxemic indices. NLRP3 over-activity triggered inflammatory cytokines (Il-1β and IL-18) via caspase-1 and increased Gasdermin D, allowing for tissue factor to be released. In vitro models confirmed that monocytes increase NLRP3 signaling under intermittent hypoxia (IH) in an HIF-1α-dependent manner, and/or in combination with plasma from OSA patients. Plasma levels of TF were higher in OSA patients with systemic inflammatory comorbidities than in those without them. CONCLUSIONS In severe OSA patients, NLRP3 activation might be a linking mechanism between intermittent hypoxia and other OSA-induced immediate changes with the development of systemic inflammatory response.
Collapse
Affiliation(s)
- Elena Díaz-García
- Hospital Universitario La Paz-IdiPAZ, Grupo de Enfermedades Respiratorias, Madrid, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | | | | | - Ana Jaureguizar
- Hospital Universitario La Paz-IdiPAZ, Respiratory Diseases Research Group.Servicio de Neumología, Madrid, Spain
| | | | - Begoña Sánchez-Sánchez
- Hospital Universitario La Paz-IdiPAZ, Respiratory Diseases Research Group.Servicio de Neumología, Madrid, Spain
| | - Ester Zamarrón
- Hospital Universitario La Paz-IdiPAZ, Servicio de Neumología, Madrid, Spain
| | | | - Eduardo López-Collazo
- IdiPAZ, La PAZ Hospital , Innate Immune Response and Laboratory of TumorImmunology, Madrid, Spain
| | - Carolina Cubillos-Zapata
- Hospital Universitario La Paz-IdiPAZ, Grupo de Enfermedades Respiratorias, Madrid, Spain.,Centro de Investigación Biomédica en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain
| | - Francisco García-Río
- Hospital Universitario La Paz, IdiPAZ, Servicio de Neumología, Madrid, Spain.,Centro de Investigación Integrada en Red en Enfermedades Respiratorias (CIBERES), Madrid, Spain.,Universidad Autónoma de Madrid, Medicina, Madrid, Spain;
| |
Collapse
|
4
|
Ząbczyk MT, Hanarz M, Malinowski KP, Pociask E, Butenas S, Gajos G, Undas A. Active FXI Can Independently Predict Ischemic Stroke in Anticoagulated Atrial Fibrillation Patients: A Cohort Study. Thromb Haemost 2022; 122:1397-1406. [PMID: 35158400 DOI: 10.1055/s-0042-1742366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND Atrial fibrillation (AF) is associated with a prothrombotic state. Presence of active tissue factor (TF), activated factor IX (FIXa) and FXIa in circulating blood contributes to thrombosis. We investigated a prognostic value of these factors in AF patients. METHODS In this cohort study, 284 AF patients (aged 63.3 ± 8.8 years) treated with oral anticoagulants were enrolled. Plasma levels of active coagulation factors were evaluated using thrombin generation assay. Concentrations of fibrinogen, D-dimer, interleukin-6 (IL-6), and endothelial damage markers, including von Willebrand factor (VWF) and soluble (s)E-selectin, were also measured. Ischemic stroke and cardiovascular death, analyzed separately or as a composite endpoint, were recorded during a mean follow-up of 47 months. RESULTS Cerebrovascular events were observed in 20 patients (1.8%/year) who had at baseline higher fibrinogen, D-dimer, and VWF levels. Active TF and FXIa at enrollment were detectable in 12 (60%) and 15 (75%) patients who experienced ischemic stroke during follow-up. The composite endpoint observed in 23 patients (2.1%/year) was associated with increased concentrations of the above laboratory variables, along with 26% higher IL-6 levels. sE-selectin did not differ between the studied groups. On multivariable regression analysis, advanced age, anticoagulation discontinuation, and detectable FXIa, but not active TF, independently predicted the composite endpoint. No associations of FIXa with the study endpoints were observed. CONCLUSION FXIa present in circulating blood is associated with increased risk of ischemic stroke and cardiovascular death in anticoagulated AF patients during long-term follow-up. FXIa inhibition could be useful in cardiovascular prevention in AF beyond the current oral anticoagulation.
Collapse
Affiliation(s)
- Michał Tomasz Ząbczyk
- Department of Experimental Cardiac Surgery, Anesthesiology and Cardiology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland.,Krakow Centre for Medical Research and Technologies, John Paul II Hospital, Krakow, Poland
| | - Maksymilian Hanarz
- Department of Experimental Cardiac Surgery, Anesthesiology and Cardiology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland
| | - Krzysztof P Malinowski
- Department of Bioinformatics and Telemedicine, Jagiellonian University Medical College, Krakow, Poland
| | - Elżbieta Pociask
- Department of Biocybernetics and Biomedical Engineering, AGH University of Science and Technology, Krakow, Poland
| | - Saulius Butenas
- Department of Biochemistry, University of Vermont, Burlington, Vermont, United States
| | - Grzegorz Gajos
- Department of Coronary Disease and Heart Failure, John Paul II Hospital, Krakow, Poland.,Department of Coronary Disease and Heart Failure, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland
| | - Anetta Undas
- Department of Experimental Cardiac Surgery, Anesthesiology and Cardiology, Institute of Cardiology, Jagiellonian University Medical College, Krakow, Poland.,Krakow Centre for Medical Research and Technologies, John Paul II Hospital, Krakow, Poland
| |
Collapse
|
5
|
Witkowski M, Friebel J, Tabaraie T, Grabitz S, Dörner A, Taghipour L, Jakobs K, Stratmann B, Tschoepe D, Landmesser U, Rauch U. Metformin Is Associated with Reduced Tissue Factor Procoagulant Activity in Patients with Poorly Controlled Diabetes. Cardiovasc Drugs Ther 2020; 35:809-813. [PMID: 32940892 PMCID: PMC8266708 DOI: 10.1007/s10557-020-07040-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/15/2020] [Indexed: 12/16/2022]
Abstract
Purpose Metformin is the first-line antidiabetic drug and shown to reduce cardiovascular risk independent from its glucose lowering action. Particularly in poorly controlled diabetes, tissue factor (TF) is expressed in the vasculature and accounts for thromboembolic complications. Here, we aimed to assess the effect of metformin on TF activity and markers of vascular inflammation in poorly controlled type 2 diabetes. Methods In a cohort of patients with uncontrolled type 2 diabetes (glycosylated hemoglobin 8.39 ± 0.24%, 68.1 ± 2.6 mmol/mol, n = 46) of whom half of the individuals were treated with metformin and the other half did not receive metformin as part of an anti-diabetic combination therapy, we assessed TF activity and markers of vascular inflammation. In vitro, human monocytic cells (THP-1) were exposed to metformin and TF expression measured in the presence and absence of the AMP-activated protein kinase (AMPK) activator 5-aminoimidazole-4-carboxamide riboside (AICAR) or the AMPK inhibitor compound C. Results In the patients, metformin treatment was associated with lower levels of TF protein (241.5 ± 19 vs. 315.4 ± 25 pg/mL, p = 0.03) and reduced TF activity (408.9 ± 49 vs. 643.8 ± 47 U/mL, p = 0.001) compared with controls. Moreover, the patients on metformin showed lower levels of vascular cell adhesion molecule (VCAM)1 (26.6 ± 1.4 vs. 35.03 ± 3.1 ng/mL, p = 0.014) and higher expression of miR-126-3p/U6sno (11.39 ± 2.8 vs. 4.26 ± 0.9, p = 0.006), a known post-transcriptional down regulator of TF and VCAM1. In vitro, metformin dose-dependently reduced lipopolysaccharide (LPS)-induced TF expression in THP-1 cells. The AMPK activator AICAR alone lowered TF expression in THP-1, while the AMPK inhibitor compound C abrogated the metformin-dependent reduction in TF expression. Conclusions Our data are the first to report that metformin is associated with reduced plasma TF procoagulant activity possibly explaining—at least in part—the vasculoprotective properties of metformin. Electronic supplementary material The online version of this article (10.1007/s10557-020-07040-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Marco Witkowski
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Julian Friebel
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Termeh Tabaraie
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Sinah Grabitz
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Andrea Dörner
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Lena Taghipour
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Kai Jakobs
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Bernd Stratmann
- Herz und Diabeteszentrum NRW, Ruhr Universität Bochum, Bad Oeynhausen, Germany
| | - Diethelm Tschoepe
- Herz und Diabeteszentrum NRW, Ruhr Universität Bochum, Bad Oeynhausen, Germany
| | - Ulf Landmesser
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Ursula Rauch
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany.
| |
Collapse
|
6
|
Witkowski M, Witkowski M, Saffarzadeh M, Friebel J, Tabaraie T, Ta Bao L, Chakraborty A, Dörner A, Stratmann B, Tschoepe D, Winter SJ, Krueger A, Ruf W, Landmesser U, Rauch U. Vascular miR-181b controls tissue factor-dependent thrombogenicity and inflammation in type 2 diabetes. Cardiovasc Diabetol 2020; 19:20. [PMID: 32066445 PMCID: PMC7027062 DOI: 10.1186/s12933-020-0993-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/26/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Diabetes mellitus is characterized by chronic vascular inflammation leading to pathological expression of the thrombogenic full length (fl) tissue factor (TF) and its isoform alternatively-spliced (as) TF. Blood-borne TF promotes factor (F) Xa generation resulting in a pro-thrombotic state and cardiovascular complications. MicroRNA (miR)s impact gene expression on the post-transcriptional level and contribute to vascular homeostasis. Their distinct role in the control of the diabetes-related procoagulant state remains poorly understood. METHODS In a cohort of patients with poorly controlled type 2 diabetes (n = 46) plasma levels of miR-181b were correlated with TF pathway activity and markers for vascular inflammation. In vitro, human microvascular endothelial cells (HMEC)-1 and human monocytes (THP-1) were transfected with miR-181b or anti-miR-181b and exposed to tumor necrosis factor (TNF) α or lipopolysaccharides (LPS). Expression of TF isoforms, vascular adhesion molecule (VCAM) 1 and nuclear factor (NF) κB nuclear translocation was assessed. Moreover, aortas, spleen, plasma, and bone marrow-derived macrophage (BMDM)s of mice carrying a deletion of the first miR-181b locus were analyzed with respect to TF expression and activity. RESULTS In patients with type 2 diabetes, plasma miR-181b negatively correlated with the procoagulant state as evidenced by TF protein, TF activity, D-dimer levels as well as markers for vascular inflammation. In HMEC-1, miR-181b abrogated TNFα-induced expression of flTF, asTF, and VCAM1. These results were validated using the anti-miR-181b. Mechanistically, we confirmed a miR-181b-mediated inhibition of importin-α3 (KPNA4) leading to reduced nuclear translocation of the TF transcription factor NFκB. In THP-1, miR-181b reduced both TF isoforms and FXa generation in response to LPS due to targeting phosphatase and tensin homolog (PTEN), a principal inducer for TF in monocytes. Moreover, in miR-181-/- animals, we found that reduced levels of miR-181b were accompanied by increased TF, VCAM1, and KPNA4 expression in aortic tissue as well as increased TF and PTEN expression in spleen. Finally, BMDMs of miR-181-/- mice showed increased TF expression and FXa generation upon stimulation with LPS. CONCLUSIONS miR-181b epigenetically controls the procoagulant state in diabetes. Reduced miR-181b levels contribute to increased thrombogenicity and may help to identify individuals at particular risk for thrombosis.
Collapse
Affiliation(s)
- Marco Witkowski
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Mario Witkowski
- Research Centre Immunology and Institute of Medical Microbiology and Hygiene, University of Mainz Medical Centre, Mainz, Germany
| | - Mona Saffarzadeh
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Julian Friebel
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Termeh Tabaraie
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Loc Ta Bao
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Aritra Chakraborty
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Andrea Dörner
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Bernd Stratmann
- Heart and Diabetes Center NRW, Ruhr University of Bochum, Bad Oeynhausen, Germany
| | - Diethelm Tschoepe
- Heart and Diabetes Center NRW, Ruhr University of Bochum, Bad Oeynhausen, Germany
| | - Samantha J Winter
- Institute for Molecular Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Andreas Krueger
- Institute for Molecular Medicine, Goethe-University Frankfurt, Frankfurt am Main, Germany
| | - Wolfram Ruf
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
| | - Ulf Landmesser
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany
| | - Ursula Rauch
- Charité Centrum 11, Department of Cardiology, Charité - Universitätsmedizin Berlin, Campus Benjamin Franklin, Hindenburgdamm 30, 12200, Berlin, Germany.
| |
Collapse
|
7
|
Liu L, Huang XW, Yang H, Kuang SJ, Lian FH, Zhang MZ, Rao F, Shan ZX, Lin QX, Yang M, Lin JJ, Jiang S, Zhou ZL, Deng CY. Comparison of Ca 2+ Handling for the Regulation of Vasoconstriction between Rat Coronary and Renal Arteries. J Vasc Res 2019; 56:191-203. [DOI: 10.1159/000501614] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 06/20/2019] [Indexed: 11/19/2022] Open
|
8
|
Hyperglycaemia cause vascular inflammation through advanced glycation end products/early growth response-1 axis in gestational diabetes mellitus. Mol Cell Biochem 2019; 456:179-190. [DOI: 10.1007/s11010-019-03503-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 02/01/2019] [Indexed: 12/27/2022]
|
9
|
Kuang SJ, Qian JS, Yang H, Rao F, Chen XY, Zhang MZ, Shan ZX, Lin QX, Xue YM, Wu SL, Jiang L, Chen CB, Deng CY. The enhancement of TXA 2 receptors-mediated contractile response in intrarenal artery dysfunction in type 2 diabetic mice. Eur J Pharmacol 2017; 805:93-100. [PMID: 28286123 DOI: 10.1016/j.ejphar.2017.03.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 02/28/2017] [Accepted: 03/08/2017] [Indexed: 11/28/2022]
Abstract
Thromboxane A2 (TXA2) has been implicated in the pathogenesis of diabetic vascular complications, although the underlying mechanism remains unclear. The present study investigated the alterations in TXA2 receptor signal transduction in type 2 diabetic renal arteries. The contraction of renal arterial rings in control (db/m+) mice and type 2 diabetic (db/db) mice was measured by a Multi Myograph System. Intracellular calcium concentration ([Ca2+]i) in vascular smooth muscle cells was measured by Fluo-4/AM dye and confocal laser scanning microscopy. Quantitative real-time PCR and Western blot analysis were used to determine gene and protein expression levels, respectively. A stable TXA2 mimic U46619 caused markedly stronger dose-dependent contractions in the renal arteries of db/db mice than in those of db/m+ mice. This response was completely blocked by a TXA2 receptor antagonist GR32191 and significantly inhibited by U73122. U46619-induced vasoconstriction was increased in the presence of nifedipine in db/db mice compared with that in db/m+ mice, whereas the response to U46619 did not differ between the two groups in the presence of SKF96365. Sarcoplasmic reticulum Ca2+ release-mediated and CaCl2-induced contractions did not differ between the two groups. In db/db mice, store-operated Ca2+(SOC) entry-mediated contraction in the renal arteries and SOC entry-mediated Ca2+ influx in smooth muscle cells were significantly increased. And the gene and protein expressions of TXA2 receptors, Orai1 and Stim1 were upregulated in the diabetic renal arteries. Therefore the enhancement of U46619-induced contraction was mediated by the upregulation of TXA2 receptors and downstream signaling in the diabetic renal arteries.
Collapse
Affiliation(s)
- Su-Juan Kuang
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Jie-Sheng Qian
- Department of Radiology, Intervention Radiology Institute, The Third Affiliated Hospital, Sun Yat-Sen University, Guangzhou, PR China
| | - Hui Yang
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Fang Rao
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Xiao-Yan Chen
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Meng-Zhen Zhang
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Zhi-Xin Shan
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Qiu-Xiong Lin
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Yu-Mei Xue
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Shu-Lin Wu
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Li Jiang
- Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China
| | - Chun-Bo Chen
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China.
| | - Chun-Yu Deng
- Guangdong Cardiovascular Institute, PR China; Department of Medical Research, Guangdong General Hospital, PR China; Guangdong Academy of Medical Sciences, Guangzhou 510080, PR China.
| |
Collapse
|
10
|
Frampton MW, Pietropaoli A, Dentler M, Chalupa D, Little EL, Stewart J, Frasier L, Oakes D, Wiltshire J, Vora R, Utell MJ. Cardiovascular effects of ozone in healthy subjects with and without deletion of glutathione-S-transferase M1. Inhal Toxicol 2015; 27:113-9. [PMID: 25600221 DOI: 10.3109/08958378.2014.996272] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
CONTEXT Exposure to ozone has acute respiratory effects, but few human clinical studies have evaluated cardiovascular effects. OBJECTIVE We hypothesized that ozone exposure alters pulmonary and systemic vascular function, and cardiac function, with more pronounced effects in subjects with impaired antioxidant defense from deletion of the glutathione-S-transferase M1 gene (GSTM1 null). METHODS Twenty-four young, healthy never-smoker subjects (12 GSTM1 null) inhaled filtered air, 100 ppb ozone and 200 ppb ozone for 3 h, with intermittent exercise, in a double-blind, randomized, crossover fashion. Exposures were separated by at least 2 weeks. Vital signs, spirometry, arterial and venous blood nitrite levels, impedance cardiography, peripheral arterial tonometry, estimation of pulmonary capillary blood volume (Vc), and blood microparticles and platelet activation were measured at baseline and during 4 h after each exposure. RESULTS Ozone inhalation decreased lung function immediately after exposure (mean ± standard error change in FEV1, air: -0.03 ± 0.04 L; 200 ppb ozone: -0.30 ± 0.07 L; p < 0.001). The immediate post-exposure increase in blood pressure, caused by the final 15-min exercise period, was blunted by 200 ppb ozone exposure (mean ± standard error change for air: 16.7 ± 2.6 mmHg; 100 ppb ozone: 14.5 ± 2.4 mmHg; 200 ppb ozone: 8.5 ± 2.5 mmHg; p = 0.02). We found no consistent effects of ozone on any other measure of cardiac or vascular function. All results were independent of the GSTM1 genotype. CONCLUSIONS We did not find convincing evidence for early acute adverse cardiovascular consequences of ozone exposure in young healthy adults. The ozone-associated blunting of the blood pressure response to exercise is of unclear clinical significance.
Collapse
|
11
|
Shivanna S, Kolandaivelu K, Shashar M, Belghasim M, Al-Rabadi L, Balcells M, Zhang A, Weinberg J, Francis J, Pollastri MP, Edelman ER, Sherr DH, Chitalia VC. The Aryl Hydrocarbon Receptor is a Critical Regulator of Tissue Factor Stability and an Antithrombotic Target in Uremia. J Am Soc Nephrol 2015; 27:189-201. [PMID: 26019318 DOI: 10.1681/asn.2014121241] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 04/11/2015] [Indexed: 01/24/2023] Open
Abstract
Patients with CKD suffer high rates of thrombosis, particularly after endovascular interventions, yet few options are available to improve management and reduce thrombotic risk. We recently demonstrated that indoxyl sulfate (IS) is a potent CKD-specific prothrombotic metabolite that induces tissue factor (TF) in vascular smooth muscle cells (vSMCs), although the precise mechanism and treatment implications remain unclear. Because IS is an agonist of the aryl hydrocarbon receptor (AHR), we first examined the relationship between IS levels and AHR-inducing activity in sera of patients with ESRD. IS levels correlated significantly with both vSMC AHR activity and TF activity. Mechanistically, we demonstrated that IS activates the AHR pathway in primary human aortic vSMCs, and further, that AHR interacts directly with and stabilizes functional TF. Antagonists directly targeting AHR enhanced TF ubiquitination and degradation and suppressed thrombosis in a postinterventional model of CKD and endovascular injury. Furthermore, AHR antagonists inhibited TF in a manner dependent on circulating IS levels. In conclusion, we demonstrated that IS regulates TF stability through AHR signaling and uncovered AHR as an antithrombotic target and AHR antagonists as a novel class of antithrombotics. Together, IS and AHR have potential as uremia-specific biomarkers and targets that may be leveraged as a promising theranostic platform to better manage the elevated thrombosis rates in patients with CKD.
Collapse
Affiliation(s)
- Sowmya Shivanna
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Kumaran Kolandaivelu
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - Moshe Shashar
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Mostafa Belghasim
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Laith Al-Rabadi
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Mercedes Balcells
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts; Biological Engineering Department, Institut Químic de Sarrià, Ramon Llull University, Barcelona, Spain
| | - Anqi Zhang
- Metabolomics Core, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Janice Weinberg
- Department of Biostatistics, School of Public Health, Boston University, Boston, Massachusetts
| | - Jean Francis
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts
| | - Michael P Pollastri
- Department of Chemistry and Chemical Biology, Northeastern University, Boston, Massachusetts; and
| | - Elazer R Edelman
- Institute of Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts
| | - David H Sherr
- Department of Environmental Health, Boston University School of Public Health, Boston University School of Medicine, Boston, Massachusetts
| | - Vipul C Chitalia
- Renal Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts;
| |
Collapse
|
12
|
Singh A, Boden G, Rao AK. Tissue factor and Toll-like receptor (TLR)4 in hyperglycaemia-hyperinsulinaemia. Effects in healthy subjects, and type 1 and type 2 diabetes mellitus. Thromb Haemost 2015; 113:750-8. [PMID: 25653143 DOI: 10.1160/th14-10-0884] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2014] [Accepted: 11/23/2014] [Indexed: 01/08/2023]
Abstract
Diabetes mellitus (DM) patients have an increased incidence of cardiovascular events. Blood tissue factor-procoagulant activity (TF-PCA), the initiating mechanism for blood coagulation, is elevated in DM. We have shown that hyperglycaemia (HG), hyperinsulinaemia (HI) and combined HG+HI (induced using 24-hour infusion clamps) increases TF-PCA in healthy and type 2 DM (T2DM) subjects, but not in type 1 DM (T1DM) subjects. The mechanisms for this are unknown. DM patients have elevated plasma lipopolysaccharide (LPS), a toll-like receptor (TLR) 4 ligand. We postulated that TLR4 plays a role in modulating TF levels. We studied the effect of HG+HI on TLR4 and TF-PCA in vivo during 24-hour HG+HI infusion clamps in healthy subjects, and T1DM and T2DM subjects, and in vitro in blood. In vivo, in healthy subjects, 24-hour HG + HI infusion increased TLR4 six-fold, which correlated with TF-PCA (r= 0.91, p<0.0001). T2DM patients showed smaller increases in both. In T1DM subjects, TLR4 declined (50%, p<0.05) and correlated with TF-PCA (r=0.55; p<0.05). In vitro, HG (200 mg/dl added glucose) and HI (1-100 nM added insulin) increased TF-PCA in healthy subjects (~2-fold, 2-4 hours). Insulin inhibited by ~30% LPS-induced increase in TF-PCA and high glucose reversed it. TLR4 levels paralleled TF-PCA (r=0.71, p<0.0001); HG and HI increased TLR4 and insulin inhibited LPS-induced TLR4 increase. This is first evidence that even in healthy subjects, HG of short duration increases TLR4 and TF-PCA, key players in inflammation and thrombosis. TLR4-TF interplay is strikingly different in non-diabetic, T1DM and T2DM subjects.
Collapse
Affiliation(s)
| | | | - A Koneti Rao
- A. Koneti Rao, M.B.B.S., Temple University School of Medicine, Sol Sherry Thrombosis Research Center, 3400 North Broad Street, Philadelphia, PA 19140, USA, Tel.: +1 215 707 4684, Fax: +1 215 707 2783, E-mail:
| |
Collapse
|
13
|
Nobe K, Takenouchi Y, Kasono K, Hashimoto T, Honda K. Two Types of Overcontraction Are Involved in Intrarenal Artery Dysfunction in Type II Diabetic Mouse. J Pharmacol Exp Ther 2014; 351:77-86. [DOI: 10.1124/jpet.114.216747] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
|
14
|
Abstract
Treatment of diabetes mellitus requires, at a certain stage of its course, drug intervention. This article reviews the properties of available antidiabetic medications and highlights potential targets for developing newer and safer drugs. Antidiabetic agents are grouped in the article as parts I, II and III according to the history of development. Part I groups early developed drugs, during the 20th century, including insulin, sulfonylureas, the metiglinides, insulin sensitizers, biguanides and α-glucosidase inhibitors. Part II groups newer drugs developed during the early part of the 21st century, the past decade, including GLP-1 analogs, DPP-VI inhibitors, amylin analogs and SGLT2 inhibitors. Part III groups potential targets for future design of newer antidiabetic agents with less adverse effects than the currently available antidiabetic drugs.
Collapse
|
15
|
Chitalia VC, Shivanna S, Martorell J, Balcells M, Bosch I, Kolandaivelu K, Edelman ER. Uremic serum and solutes increase post-vascular interventional thrombotic risk through altered stability of smooth muscle cell tissue factor. Circulation 2012; 127:365-76. [PMID: 23269489 DOI: 10.1161/circulationaha.112.118174] [Citation(s) in RCA: 103] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Stent thrombosis (ST), a postinterventional complication with a mortality rate of 50%, has an incidence that rises precipitously in patients at risk. Chronic renal failure and end-stage renal disease have emerged as particularly strong ST risk factors, yet the mechanism remains elusive. Tissue factor (TF) is a crucial mediator of injury-related thrombosis and has been implicated for ST. We posit that uremia modulates TF in the local vessel wall to induce postinterventional thrombosis in patients with end-stage renal disease. METHODS AND RESULTS As a model of the de-endothelialized, postinterventional state, we exposed primary human vascular smooth muscle cells (vSMCs) pretreated with uremic serum (obtained from ESRD patients on hemodialysis) to coronary-like blood flow. vSMC TF expression, activity, stability, and posttranslational modification were examined after vSMCs were treated with uremic serum or solutes. We found significantly greater clot formation after uremic serum exposure, which was substantially reduced with the prior treatment with anti-TF neutralizing antibody. Uremic sera induced 2- to 3-fold higher TF expression and activity in vSMCs independent of diabetes mellitus. Relevant concentrations of isolated uremic solutes such as indole-3-acetic acid (3.5 μg/mL), indoxyl sulfate (25 μg/mL), and uric acid (80 μg/mL) recapitulated these effects in cell culture and the flow loop model. We show further that TF undergoes ubiquitination at baseline and that uremic serum, indole-3-acetic acid, and indoxyl sulfate significantly prolong TF half-life by inhibiting its ubiquitination. CONCLUSIONS The uremic milieu is profoundly thrombogenic and upregulates vSMC TF levels by increasing TF stability and decreasing its ubiquitination. Together, these data demonstrate for the first time that the posttranslational regulation of TF in uremia may have a causative role in the increased ST risk observed in uremic patients. These data suggest that interventions that reduce vSMC TF may help to prevent ST and that uremic solutes should be considered as novel risk factors for ST in patients with chronic renal failure.
Collapse
Affiliation(s)
- Vipul C Chitalia
- Harvard-MIT Division of Science and Technology, Bldg E25-449, Massachusetts Institute of Technology, 77 Mass Ave, Cambridge, MA 02139, USA.
| | | | | | | | | | | | | |
Collapse
|
16
|
Çolak S, Geyikoğlu F, Aslan A, Deniz GY. Effects of lichen extracts on haematological parameters of rats with experimental insulin-dependent diabetes mellitus. Toxicol Ind Health 2012; 30:878-87. [DOI: 10.1177/0748233712466130] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The prevalence of diabetes mellitus in the world is steadily increasing. Oxidative stress contributes to the development of diabetic complications, including diabetic haematological changes. Lichens are used as food supplements and are also used as possible natural antioxidant, antimicrobial and anticancer agents. We hypothesized that antioxidant activity of lichens may decrease hyperglycaemia-induced oxidative stress and prevent the development of diabetic complications, including abnormality in haematological condition. Therefore, the effects of Cetraria islandica water extract (CIWE) and Pseudevernia furfuracea water extract (PFWE) on the haematological parameters of rats with type 1 DM were investigated for the first time in the present study. Control Sprague-Dawley or streptozotocin (STZ)-induced diabetic rats were either untreated or treated with water lichen extracts (5–500 mg/kg body weight (bw)/day) for 2 weeks, starting at 72 h after STZ injection. On day 14, animals were anaesthetized and haematological and metabolic parameters were determined between control and experimental groups. In addition, the total oxidative stress (TOS), a specific indicator of oxidative stress, and the total antioxidant capacity (TAC) were measured by biochemical studies. In diabetic rats, CIWE of 250–500 mg/kg bw dose showed more prominent results when compared with doses of PFWE for TAC. The results obtained in the present study suggested that the antioxidant activities of lichens might be the possible reason behind the observed antihaematological status. However, the protective effect of lichen extracts were inadequate on diabetes-induced microcytic hypochromic anaemia. In addition, the extracts have no effect on metabolic complications. Our experimental data showed that high doses of CIWE and PFWE alone have no detrimental effect on blood cells and TOS status of plasma. Hence, they are safe and suitable for different administration routes.
Collapse
Affiliation(s)
- Suat Çolak
- Department of Biology, Faculty of Science and Arts, Artvin Çoruh University, Artvin, Turkey
| | - Fatime Geyikoğlu
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
| | - Ali Aslan
- Department of Biology, Kazim Karabekir Education Faculty, Ataturk University, Erzurum, Turkey
| | - Gülşah Yıldız Deniz
- Department of Nursing, Gumuşhane University, Health Services Vocational School, Gumuşhane, Turkey
| |
Collapse
|
17
|
Murali R, Karthikeyan A, Saravanan R. Protective Effects ofd-Limonene on Lipid Peroxidation and Antioxidant Enzymes in Streptozotocin-Induced Diabetic Rats. Basic Clin Pharmacol Toxicol 2012; 112:175-81. [DOI: 10.1111/bcpt.12010] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Accepted: 09/05/2012] [Indexed: 11/28/2022]
Affiliation(s)
- Ramakrishnan Murali
- Department of Biochemistry and Biotechnology, Faculty of Science; Annamalai University; Annamalai Nagar; Tamil Nadu; India
| | - Arumugam Karthikeyan
- Department of Biochemistry and Biotechnology, Faculty of Science; Annamalai University; Annamalai Nagar; Tamil Nadu; India
| | - Ramalingam Saravanan
- Department of Biochemistry and Biotechnology, Faculty of Science; Annamalai University; Annamalai Nagar; Tamil Nadu; India
| |
Collapse
|
18
|
Microparticle-associated tissue factor activity measured with the Zymuphen MP-TF kit and the calibrated automated thrombogram assay. Blood Coagul Fibrinolysis 2012; 23:520-6. [DOI: 10.1097/mbc.0b013e328354a256] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
19
|
Singh A, Boden G, Homko C, Gunawardana J, Rao AK. Whole-blood tissue factor procoagulant activity is elevated in type 1 diabetes: effects of hyperglycemia and hyperinsulinemia. Diabetes Care 2012; 35:1322-7. [PMID: 22410811 PMCID: PMC3357241 DOI: 10.2337/dc11-2114] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To determine tissue factor procoagulant activity (TF-PCA) in patients with type 1 diabetes and to examine effects of hyperglycemia and hyperglycemia plus hyperinsulinemia on TF-PCA. RESEARCH DESIGN AND METHODS We have determined circulating TF-PCA and other coagulation factors under basal (hyperglycemic) conditions, after acute correction of hyperglycemia, in response to 24 h of selective hyperglycemia, and in response to 24 h of hyperglycemia plus hyperinsulinemia in nine type 1 diabetic patients and in seven nondiabetic control subjects. RESULTS As shown previously in patients with type 2 diabetes, basal TF-PCA and plasma coagulation factor VIIa (FVIIa) were higher in patients with type 1 diabetes than in nondiabetic control subjects. However, in contrast with type 2 diabetes, normalizing glucose did not decrease the elevated TF-PCA levels, and raising glucose or glucose plus insulin levels did not increase TF-PCA. CONCLUSIONS Patients with type 1 diabetes have elevated circulating TF-PCA and FVIIa levels and are in a procoagulant state that may predispose them to acute cardiovascular events. The mechanisms regulating TF-PCA in patients with type 1 and type 2 diabetes are different and should be further explored.
Collapse
Affiliation(s)
- Anamika Singh
- Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania, USA
| | | | | | | | | |
Collapse
|
20
|
Two distinct dysfunctions in diabetic mouse mesenteric artery contraction are caused by changes in the Rho A–Rho kinase signaling pathway. Eur J Pharmacol 2012; 683:217-25. [DOI: 10.1016/j.ejphar.2012.03.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Revised: 03/07/2012] [Accepted: 03/09/2012] [Indexed: 11/17/2022]
|
21
|
Anticoagulant effects of an antidiabetic drug on monocytes in vitro. Thromb Res 2011; 128:e100-6. [PMID: 21862110 DOI: 10.1016/j.thromres.2011.07.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 07/01/2011] [Accepted: 07/07/2011] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Monocyte- and microparticle (MP)-associated tissue factor (TF) is upregulated in diabetes. Lipopolysaccharide (LPS) induces expression of TF and alternatively spliced TF (asTF) and increases MP release from monocytes. Using LPS-stimulated TF-bearing human monocytes, we examined whether glibenclamide, a sulfonylurea used to treat diabetes type 2, might possess anticoagulant properties. METHODS We studied the effects of glibenclamide on cell- and supernatant-associated procoagulant activity (Factor Xa-generating assay and clot formation assay), on expression of TF and asTF (flow cytometry, RT-qPCR, western blot) and on cell viability and MP release (flow cytometry). RESULTS Glibenclamide dose-dependently decreased procoagulant activity of cells and supernatants. The reduction in cellular procoagulant activity coincided with reduced expression of TF and asTF in cells, whereas cell viability remained almost unchanged. The glibenclamide-induced reduction in procoagulant activity of supernatants appeared to be associated with a decreased number of released MPs. CONCLUSIONS Reduction of monocyte- and supernatant-associated procoagulant activity by glibenclamide is associated with decreased expression of TF and asTF and possibly with a reduced MP number. Our data indicate that glibenclamide reduces the prothrombotic state in LPS-stimulated monocytes in vitro. Glibenclamide might therefore also have an anticoagulant effect in vivo, but this needs to be further evaluated.
Collapse
|
22
|
Taniguchi M, Ono N, Hayashi A, Yakura Y, Takeya H. Effect of dibutyryl cyclic adenosine monophosphate on the gene expression of plasminogen activator inhibitor-1 and tissue factor in adipocytes. Thromb Res 2011; 128:375-80. [PMID: 21496886 DOI: 10.1016/j.thromres.2011.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2010] [Revised: 02/16/2011] [Accepted: 03/08/2011] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Hypertrophic adipocytes in obese states express the elevated levels of plasminogen activator inhibitor-1 (PAI-1) and tissue factor (TF). An increase in the intracellular concentration of cyclic adenosine monophosphate (cAMP) promotes triglyceride hydrolysis and may improve dysregulation of adipocyte metabolism. Here, we investigate the effect of dibutyryl-cAMP (a phosphodiesterase-resistant analog of cAMP) on the gene expression of PAI-1 and TF in adipocytes. MATERIALS AND METHODS Differentiated 3T3-L1 adipocytes were treated with dibutyryl-cAMP and agents that would be expected to elevate intracellular cAMP, including cilostazol (a phosphodiesterase inhibitor with anti-platelet and vasodilatory properties), isoproterenol (a beta adrenergic agonist) and forskolin (an adenylyl cyclase activator). The levels of PAI-1 and TF mRNAs were measured using real-time quantitative reverse transcription-PCR. RESULTS AND CONCLUSIONS The treatment of adipocytes with dibutyryl-cAMP resulted in the inhibition of both lipid accumulation and TF gene expression. However, PAI-1 gene expression was slightly but significantly increased by dibutyryl-cAMP. On the other hand, cilostazol inhibited the expression of PAI-1 without affecting lipid accumulation. When the adipocytes were treated with cilostazol in combination with isoproterenol or forskolin, the inhibitory effect of cilostazol on PAI-1 gene expression was counteracted, thus suggesting that inhibition by cilostazol may not be the result of intracellular cAMP accumulation by phosphodiesterase inhibition. These results suggest the implication of cAMP in regulation of the gene expression of TF and PAI-1 in adipocytes. Our findings will serve as a useful basis for further research in therapy for obesity-associated thrombosis.
Collapse
Affiliation(s)
- Makoto Taniguchi
- Division of Pathological Biochemistry, Department of Life Sciences, Tottori University School of Medicine, Yonago 683–8503, Japan
| | | | | | | | | |
Collapse
|
23
|
Morel O, Kessler L, Ohlmann P, Bareiss P. Diabetes and the platelet: Toward new therapeutic paradigms for diabetic atherothrombosis. Atherosclerosis 2010; 212:367-76. [DOI: 10.1016/j.atherosclerosis.2010.03.019] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2009] [Revised: 03/05/2010] [Accepted: 03/18/2010] [Indexed: 01/21/2023]
|
24
|
Pimentel GD, Portero-McLellan KC, Oliveira EP, Spada APM, Oshiiwa M, Zemdegs JCS, Barbalho SM. Long-term nutrition education reduces several risk factors for type 2 diabetes mellitus in Brazilians with impaired glucose tolerance. Nutr Res 2010; 30:186-90. [PMID: 20417879 DOI: 10.1016/j.nutres.2010.03.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 02/22/2010] [Accepted: 03/12/2010] [Indexed: 12/24/2022]
Abstract
The aim of this study was to evaluate the effects of a nutrition education program (NEP) on anthropometric, dietetic, and metabolic parameters in high-risk subjects for type 2 diabetes mellitus. Fifty-one participants, both sexes, were randomly assigned to either the control (58.8%) or the intervention (NEP) group. The intervention group received frequent individual and group nutritional counseling from a team of nutritionists. Participants were assessed at baseline (M0) and after 12 months (M1) for anthropometric, dietetic, and metabolic parameters. The hypothesis was that high-risk subjects for type 2 diabetes mellitus participating in NEP would show an improvement in these parameters. At M1, the intervention group showed a significant decline in body weight (-3.4%), body mass index (-5.7%), cholesterol intake (-49.5%), fasting glycemia (-14.0%), fasting insulin (-9.0%), postprandial glycemia (-21.0%), postprandial insulin (-71.0%), total serum cholesterol (-23.0%), and glycated hemoglobin (-24.0%). A decrease in energy intake (5%, P = .06) and low-density lipoprotein cholesterol (25%, P = .07) was observed in the interventional group, although it did not reach statistical significance. In contrast, the control group presented a significantly higher energy intake (19%, P = .04) and a nonsignificant increase in consumption of all macronutrients. The long-term NEP was found to improve anthropometric, dietary, and metabolic parameters in high-risk subjects for type 2 diabetes mellitus.
Collapse
Affiliation(s)
- Gustavo D Pimentel
- Department of Physiology, Federal University of Sao Paulo (UNIFESP), São Paulo/SP, Brazil.
| | | | | | | | | | | | | |
Collapse
|