1
|
Zhang L, Peng X, Wang Q, Li J, Lv S, Han S, Zhang L, Ding H, Wang CY, Xiao G, Du X, Peng K, Li H, Liu W. CCR2 is a host entry receptor for severe fever with thrombocytopenia syndrome virus. SCIENCE ADVANCES 2023; 9:eadg6856. [PMID: 37531422 PMCID: PMC10396298 DOI: 10.1126/sciadv.adg6856] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 06/30/2023] [Indexed: 08/04/2023]
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV) is an emerging tick-borne bunyavirus causing a high fatality rate of up to 30%. To date, the receptor mediating SFTSV entry remained uncharacterized, hindering the understanding of disease pathogenesis. Here, C-C motif chemokine receptor 2 (CCR2) was identified as a host receptor for SFTSV based on a genome-wide CRISPR-Cas9 screen. Knockout of CCR2 substantially reduced viral binding and infection. CCR2 enhanced SFTSV binding through direct binding to SFTSV glycoprotein N (Gn), which is mediated by its N-terminal extracellular domain. Depletion of CCR2 in C57BL/6J mouse model attenuated SFTSV replication and pathogenesis. The peripheral blood primary monocytes from elderly individuals or subjects with underlying diabetes mellitus showed higher CCR2 surface expression and supported stronger binding and replication of SFTSV. Together, these data indicate that CCR2 is a host entry receptor for SFTSV infection and a novel target for developing anti-SFTSV therapeutics.
Collapse
Affiliation(s)
- Leike Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- Hubei Jiangxia Laboratory, Wuhan, Hubei 430200, China
| | - Xuefang Peng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Qingxing Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Jin Li
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Shouming Lv
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Shuo Han
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Lingyu Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Heng Ding
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
| | - Cong-Yi Wang
- Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430040, China
| | - Gengfu Xiao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Xuguang Du
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing 100193, China
| | - Ke Peng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
- School of Public Health, Wuhan University, Wuhan, Hubei 430071, China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China
- School of Public Health, Wuhan University, Wuhan, Hubei 430071, China
| |
Collapse
|
2
|
SGLT2 Inhibitor—Dapagliflozin Attenuates Diabetes-Induced Renal Injury by Regulating Inflammation through a CYP4A/20-HETE Signaling Mechanism. Pharmaceutics 2023; 15:pharmaceutics15030965. [PMID: 36986825 PMCID: PMC10054805 DOI: 10.3390/pharmaceutics15030965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/21/2023] [Accepted: 03/13/2023] [Indexed: 03/19/2023] Open
Abstract
Diabetic kidney disease (DKD) is a serious complication of diabetes, affecting millions of people worldwide. Inflammation and oxidative stress are key contributors to the development and progression of DKD, making them potential targets for therapeutic interventions. Sodium-glucose cotransporter 2 inhibitors (SGLT2i) have emerged as a promising class of drugs, with evidence demonstrating that they can improve renal outcomes in people with diabetes. However, the exact mechanism by which SGLT2i exert their renoprotective effects is not yet fully understood. This study demonstrates that dapagliflozin treatment attenuates renal injury observed in type 2 diabetic mice. This is evidenced by the reduction in renal hypertrophy and proteinuria. Furthermore, dapagliflozin decreases tubulointerstitial fibrosis and glomerulosclerosis by mitigating the generation of reactive oxygen species and inflammation, which are activated through the production of CYP4A-induced 20-HETE. Our findings provide insights onto a novel mechanistic pathway by which SGLT2i exerts their renoprotective effects. Overall, and to our knowledge, the study provides critical insights into the pathophysiology of DKD and represents an important step towards improving outcomes for people with this devastating condition.
Collapse
|
3
|
Holtz JK, Thinggaard BS, Grauslund J, Subhi Y. Association between oral metformin use and the risk of age-related macular degeneration: A systematic review with meta-analysis. Acta Ophthalmol 2023. [PMID: 36876510 DOI: 10.1111/aos.15655] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 12/13/2022] [Accepted: 02/16/2023] [Indexed: 03/07/2023]
Abstract
Rodent studies demonstrate that oral metformin use may reduce chronic low-grade inflammation, downregulate apoptosis and extend life span. Emerging epidemiological evidence suggests that oral metformin use may protect against development of age-related macular degeneration (AMD) in humans. In this study, we systematically reviewed the literature on the association between oral metformin use and AMD in patients with type 2 diabetes and conducted a quantitative meta-analysis to provide a summary estimate of the association. We searched 12 literature databases on 10 August 2022 and identified nine eligible studies with data on a total of 1 427 074 individuals with diabetes. We found that patients with diabetes using metformin had a significantly lower odds ratio (OR) of having or developing AMD (OR 0.63; 95% CI: 0.46-0.86; p = 0.004). Our analyses also revealed that although the findings were robust in the sensitivity analysis, the Funnel plot indicated a certain publication bias towards finding a protective effect. Results of individual studies suggested inconsistent findings, as some studies found lower risk of AMD from higher total metformin exposure, whereas other studies found a higher risk of AMD from higher total metformin exposure. Taken together, there may be a link between metformin use and lower risk of AMD, but the relationship is only studied in observational studies, various sources of bias can be speculated to influence, and careful interpretation is warranted.
Collapse
Affiliation(s)
| | - Benjamin Sommer Thinggaard
- Department of Ophthalmology, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Jakob Grauslund
- Department of Ophthalmology, Odense University Hospital, Odense, Denmark.,Department of Clinical Research, University of Southern Denmark, Odense, Denmark.,Steno Diabetes Center Odense, Odense University Hospital, Odense, Denmark.,Department of Ophthalmology, Vestfold Hospital Trust, Tønsberg, Norway
| | - Yousif Subhi
- Department of Clinical Research, University of Southern Denmark, Odense, Denmark.,Department of Ophthalmology, Rigshospitalet, Glostrup, Denmark
| |
Collapse
|
4
|
Garcés-Hernández MJ, Pedraza-Escudero K, Garibay-Nieto N, Hernández-Ruiz J, Prieto-Chávez JL, Arriaga-Pizano LA, Villanueva-Ortega E, Escobedo G, Manjarrez-Reyna AN, López-Alvarenga JC, Pérez-Hernández JL, Queipo-García G. The CCR2 + Monocyte Subsets Increase in Obese Boys but Not Girls with Abnormally High Carotid Intima-Media Thickness: A Pilot Study. J Cardiovasc Dev Dis 2022; 9:330. [PMID: 36286282 PMCID: PMC9604509 DOI: 10.3390/jcdd9100330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 09/21/2022] [Accepted: 09/23/2022] [Indexed: 11/16/2022] Open
Abstract
The differential contribution of monocyte subsets expressing the C-C chemokine receptor 2 (CCR2) to subclinical atherosclerosis in girls and boys is unclear. In this pilot study, we compared classical, intermediate, and nonclassical monocyte subsets expressing CCR2 in 33 obese children of both sexes aged 8 to 16 divided by carotid intima-media thickness (IMT), considering values above the 75th percentile (p75) as abnormally high IMT. Obesity was defined as body mass index above the 95th percentile according to age and sex. Flow cytometry analyses revealed that boys but not girls with IMT ≥ p75 displayed increased CCR2+ cell percentage and CCR2 expression in the three monocyte subsets, compared to boys with IMT < p75. The CCR2+ cell percentage and CCR2 expression in the three monocyte subsets significantly correlated with increased IMT and insulin resistance in boys but not girls, where the CCR2+ nonclassical monocyte percentage had the strongest associations (r = 0.73 and r = 0.72, respectively). The role of CCR2+ monocyte subpopulations in identifying an abnormally high IMT shows a marked sexual dimorphism, where boys seem to be at higher subclinical atherosclerosis risk than girls.
Collapse
Affiliation(s)
| | - Karen Pedraza-Escudero
- Childhood Obesity Clinic, Hospital General de México Dr. Eduardo Liceaga, Ciudad de México 06720, Mexico
| | - Nayely Garibay-Nieto
- Childhood Obesity Clinic, Hospital General de México Dr. Eduardo Liceaga, Ciudad de México 06720, Mexico
| | - Joselin Hernández-Ruiz
- Clinical Pharmacology Unit, Hospital General de México Dr. Eduardo Liceaga, Dr. Balmis 148, Doctores, Cuauhtémoc, Ciudad de México 06720, Mexico
| | - Jessica Lakshmi Prieto-Chávez
- Flow Cytometry Laboratory, Instrumental Center, Health Investigation Coordination, Hospital de Especialidades del Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México 06720, Mexico
| | - Lourdes Andrea Arriaga-Pizano
- Flow Cytometry Laboratory, Instrumental Center, Health Investigation Coordination, Hospital de Especialidades del Centro Médico Siglo XXI, Instituto Mexicano del Seguro Social, Ciudad de México 06720, Mexico
| | - Eréndira Villanueva-Ortega
- Childhood Obesity Clinic, Hospital General de México Dr. Eduardo Liceaga, Ciudad de México 06720, Mexico
| | - Galileo Escobedo
- Laboratory of Immunometabolism, Research Division, General Hospital of México “Dr. Eduardo Liceaga”, Ciudad de México 06720, Mexico
| | - Aaron Noe Manjarrez-Reyna
- Laboratory of Immunometabolism, Research Division, General Hospital of México “Dr. Eduardo Liceaga”, Ciudad de México 06720, Mexico
| | - Juan Carlos López-Alvarenga
- Population Health and Biostatistics, School of Medicine, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA
- Research Department, Universidad México-Americana del Norte, Reynosa 88640, Mexico
| | - José Luis Pérez-Hernández
- Gastroenterology and Hepatology Department, Hospital General de México “Dr. Eduardo Liceaga”, Ciudad de México 06720, Mexico
| | - Gloria Queipo-García
- Department of Human Genetics, Hospital General de México “Dr. Eduardo Liceaga”, Ciudad de México 06720, Mexico
| |
Collapse
|
5
|
Blanks AM, Pedersen LN, Caslin HL, Mihalick VL, Via J, Canada JM, Van Tassell B, Carbone S, Abbate A, Lee Franco R. LPS differentially affects expression of CD14 and CCR2 in monocyte subsets of Post-STEMI patients with hyperglycemia. Diabetes Res Clin Pract 2022; 191:110077. [PMID: 36089102 DOI: 10.1016/j.diabres.2022.110077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/15/2022] [Accepted: 09/02/2022] [Indexed: 11/03/2022]
Abstract
AIMS Following ST-segment elevation myocardial infarction (STEMI), recruitment and activation of monocytes [classical (CD14++CD16-CCR2++), intermediate (CD14++CD16+CCR2+), non-classical (CD14LowCD16++CCR2Low)] are needed for myocardial wound healing. Monocyte surface receptor CC chemokine receptor type 2 (CCR2) is responsible for monocyte chemotaxis to sites of inflammation and the lipopolysaccharide (LPS)-binding protein co-receptor, CD14, is involved in pro-inflammatory monocyte activation. The purpose of this investigation was to determine the effects of ex-vivo LPS activation on monocyte subset CD14 and CCR2 expression in post-STEMI individuals with normal and elevated random blood glucose. METHODS Post-STEMI subjects were identified as normal random glucose (NG, <98 mg/dL, n = 13) or impaired random glucose (IG, ≥98 mg/dL, n = 26) and monocytes were analyzed for non-activated and LPS-activated (1 µg/mL for 4 h) CCR2 and CD14 expression. RESULTS Non-activated intermediate monocytes from IG showed decreased CD14 expression when compared to NG, which was maintained following LPS-activation. The NG group showed a larger absolute reduction in classical CCR2 expression, leading to a significant difference between NG and IG following LPS-activation. CONCLUSION Results suggest a heightened response to pro-inflammatory activation in IG following STEMI, which may impair or delay post-STEMI myocardial healing, and thus increase the incidence of chronic heart failure. NIH 1R34HL121402.
Collapse
Affiliation(s)
- Anson M Blanks
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, United States
| | - Lauren N Pedersen
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, United States
| | - Heather L Caslin
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37212, United States
| | - Virginia L Mihalick
- VCU Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23219, United States
| | - Jeremy Via
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, United States
| | - Justin M Canada
- VCU Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23219, United States
| | - Benjamin Van Tassell
- Department of Pharmacotherapy and Outcomes Science, Virginia Commonwealth University, Richmond, VA 23298, United States
| | - Salvatore Carbone
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, United States
| | - Antonio Abbate
- VCU Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23219, United States
| | - R Lee Franco
- Department of Kinesiology and Health Sciences, College of Humanities and Sciences, Virginia Commonwealth University, Richmond, VA 23284, United States.
| |
Collapse
|
6
|
Endothelial Dysfunction and Ischemia-Modified Albumin Levels in Males with Diabetic and Nondiabetic Erectile Dysfunction. DISEASE MARKERS 2022; 2022:3661822. [PMID: 35585936 PMCID: PMC9110139 DOI: 10.1155/2022/3661822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/06/2022] [Accepted: 04/08/2022] [Indexed: 01/07/2023]
Abstract
In this study, we aimed to determine endothelial dysfunction and ischemia-modified albumin (IMA) levels in patients diagnosed with erectile dysfunction (ED) and to examine the relationship between these and diabetes disease. 86 male patients (46 patients with diabetes, age:
and 40 patients with nondiabetes (control group), age:
) were included in the study. IMA, a new indicator of tissue ischemia and oxidative stress, was checked. Superoxide dismutase (SOD) activity, another oxidative stress indicator, was examined. Endothelin-1 (ET-1), one of the parameters of endothelial dysfunction, was measured. Additionally, endothelial function was evaluated with flow-mediated vasodilatation (FMD). Student’s
-test was used for statistical evaluation.
values less than 0.05 were considered statistically significant. SOD activity was significantly lower in the diabetic group than in the control group, and ET-1 was significantly higher (
). IMA was found to be significantly higher in the diabetic group than the control group (
). FMD was significantly lower in diabetic group compared to the control group (
). According to our findings, the co-occurrence of erectile dysfunction and diabetes demonstrates a complex condition that includes endothelial dysfunction, oxidative stress, and tissue ischemia. When the correlation of indicators, which are markers, was examined, the severity of the co-occurrence of diabetes and erectile dysfunction was again demonstrated.
Collapse
|
7
|
Starace V, Battista M, Brambati M, Cavalleri M, Bertuzzi F, Amato A, Lattanzio R, Bandello F, Cicinelli MV. The role of inflammation and neurodegeneration in diabetic macular edema. Ther Adv Ophthalmol 2021; 13:25158414211055963. [PMID: 34901746 PMCID: PMC8652911 DOI: 10.1177/25158414211055963] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 10/08/2021] [Indexed: 12/14/2022] Open
Abstract
The pathogenesis of diabetic macular edema (DME) is complex. Persistently high blood glucose activates multiple cellular pathways and induces inflammation, oxidation stress, and vascular dysfunction. Retinal ganglion cells, macroglial and microglial cells, endothelial cells, pericytes, and retinal pigment epithelium cells are involved. Neurodegeneration, characterized by dysfunction or apoptotic loss of retinal neurons, occurs early and independently from the vascular alterations. Despite the increasing knowledge on the pathways involved in DME, only limited therapeutic strategies are available. Besides antiangiogenic drugs and intravitreal corticosteroids, alternative therapeutic options tackling inflammation, oxidative stress, and neurodegeneration have been considered, but none of them has been currently approved.
Collapse
Affiliation(s)
- Vincenzo Starace
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Marco Battista
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Maria Brambati
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Michele Cavalleri
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Federico Bertuzzi
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Alessia Amato
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Rosangela Lattanzio
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Francesco Bandello
- Department of Ophthalmology, IRCCS San Raffaele Scientific Institute, Milan, ItalySchool of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| | - Maria Vittoria Cicinelli
- Department of Ophthalmology, University Vita-Salute, IRCCS Ospedale San Raffaele, via Olgettina 60, 20132 Milan, ItalySchool of Medicine, Vita-Salute San Raffaele University, Milan, Italy
| |
Collapse
|
8
|
Pan X, Kaminga AC, Wen SW, Liu A. Chemokines in Prediabetes and Type 2 Diabetes: A Meta-Analysis. Front Immunol 2021; 12:622438. [PMID: 34054797 PMCID: PMC8161229 DOI: 10.3389/fimmu.2021.622438] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 03/09/2021] [Indexed: 12/11/2022] Open
Abstract
Background A growing number of studies found inconsistent results on the role of chemokines in the progression of type 2 diabetes (T2DM) and prediabetes (PDM). The purpose of this meta-analysis was to summarize the results of previous studies on the association between the chemokines system and T2DM/PDM. Methods We searched in the databases, PubMed, Web of Science, Embase and Cochrane Library, for eligible studies published not later than March 1, 2020. Data extraction was performed independently by 2 reviewers, on a standardized, prepiloted form. Group differences in chemokines concentrations were summarized using the standardized mean difference (SMD) with a 95% confidence interval (CI), calculated by performing a meta-analysis using the random-effects model. Results We identified 98 relevant studies that investigated the association between 32 different chemokines and T2DM/PDM. Altogether, these studies involved 14,708 patients and 14,574 controls. Results showed that the concentrations of CCL1, CCL2, CCL4, CCL5, CCL11, CXCL8, CXCL10 and CX3CL1 in the T2DM patients were significantly higher than that in the controls, while no difference in these concentrations was found between the PDM patients and controls. Conclusion Progression of T2DM may be associated with elevated concentrations of chemokines. Meta-Analysis Registration PROSPERO, identifier CRD42019148305.
Collapse
Affiliation(s)
- Xiongfeng Pan
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China.,Hunan Provincial Key Laboratory of Clinical Epidemiology, Xiangya School of Public Health, Central South University, Changsha, China
| | - Atipatsa C Kaminga
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China.,Department of Mathematics and Statistics, Mzuzu University, Mzuzu, Malawi
| | - Shi Wu Wen
- OMNI Research Group, Ottawa Hospital Research Institute, Ottawa, ON, Canada.,Department of Obstetrics and Gynaecology and School of Epidemiology and Public Health, University of Ottawa Faculty of Medicine, Ottawa, ON, Canada
| | - Aizhong Liu
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| |
Collapse
|
9
|
Keshavjee SH, Schwenger KJP, Yadav J, Jackson TD, Okrainec A, Allard JP. Factors Affecting Metabolic Outcomes Post Bariatric Surgery: Role of Adipose Tissue. J Clin Med 2021; 10:714. [PMID: 33670215 PMCID: PMC7916950 DOI: 10.3390/jcm10040714] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 02/07/2023] Open
Abstract
Obesity is an ever-growing public health crisis, and bariatric surgery (BS) has become a valuable tool in ameliorating obesity, along with comorbid conditions such as diabetes, dyslipidemia and hypertension. BS techniques have come a long way, leading to impressive improvements in the health of the majority of patients. Unfortunately, not every patient responds optimally to BS and there is no method that is sufficient to pre-operatively predict who will receive maximum benefit from this surgical intervention. This review focuses on the adipose tissue characteristics and related parameters that may affect outcomes, as well as the potential influences of insulin resistance, BMI, age, psychologic and genetic factors. Understanding the role of these factors may help predict who will benefit the most from BS.
Collapse
Affiliation(s)
- Sara H. Keshavjee
- Vagelos College of Physicians & Surgeons, Columbia University, New York, NY 10032, USA;
| | - Katherine J. P. Schwenger
- Division of Gastroenterology, Toronto General Hospital, University Health Network, Toronto, ON M5G 2N2, Canada;
| | - Jitender Yadav
- Department of Immunology, University of Toronto, Toronto, ON M5S 1A8, Canada;
| | - Timothy D. Jackson
- Division of General Surgery, University Health Network, University of Toronto, Toronto, ON M5T 2S8, Canada; (T.D.J.); (A.O.)
| | - Allan Okrainec
- Division of General Surgery, University Health Network, University of Toronto, Toronto, ON M5T 2S8, Canada; (T.D.J.); (A.O.)
| | - Johane P. Allard
- Division of Gastroenterology, Toronto General Hospital, University Health Network, Toronto, ON M5G 2N2, Canada;
| |
Collapse
|
10
|
Cardio-ankle vascular index is linked to deranged metabolic status, especially high HbA1c and monocyte-chemoattractant-1 protein, in predialysis chronic kidney disease. Int Urol Nephrol 2019; 52:137-145. [PMID: 31773386 DOI: 10.1007/s11255-019-02336-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 11/06/2019] [Indexed: 12/31/2022]
Abstract
INTRODUCTION AND PURPOSE Arterial stiffness is an independent predictor of cardiovascular disease in chronic kidney disease (CKD). Cardio-ankle vascular index (CAVI) is a newly developed method used to assess arterial stiffness, independent of changes in blood pressure. CAVI reflects stiffness and atherosclerosis at the thoracic, abdominal, common iliac, femoral, and tibial artery levels. In predialysis stage 3-5 diabetic and nondiabetic CKD patients, CAVI levels and its relation to atherosclerosis-associated risk factors including monocyte-chemoattractant protein-1 (MCP-1), sclerostin, fibroblast growth factor-23 (FGF-23), Klotho, and 25-OH vitamin D were determined. MATERIALS AND METHODS The study was performed on three age-matched and gender-matched groups. Group 1 included 46 stage 3-5 nondiabetic CKD patients, group 2 included 44 stage 3-5 diabetic CKD patients, and group 3 included 44 non-uremic controls. All subjects underwent CAVI measurement. Serum glycated hemoglobin (HbA1c), total calcium, phosphorus, parathormone, FGF-23, Klotho, MCP-1, sclerostin, and 25-OH vitamin D were determined using standard methods. RESULTS CAVI level was 8.22 ± 0.18 m/s in diabetic CKD patients and significantly higher than in nondiabetic CKD (7.61 ± 0.18 m/s) and control (7.59 ± 0.17 m/s) patients. FGF-23 level was higher in the CKD groups than controls but not statistically significant. MCP-1 level was significantly higher in diabetic CKD patients. Klotho and sclerostin levels were significantly lower in diabetic CKD patients. In the whole cohort, CAVI showed positive correlations with age (r = 0.447, p < 0.0001), smoking (r = 0.331, p = 0.035), mean arterial blood pressure (MABP; r = 0.327, p < 0.0001), fasting blood glucose (r = 0.185, p = 0.033), and HbA1c (r = 0.258, p = 0.003). Stepwise regression analysis revealed that age (p = 0.0001, B = 0.461), MABP (p < 0.0001, B = 0.365), HbA1c (p = 0.003, B = 0.251), and MCP-1 (p = 0.013, B = 0.214) independently predicted CAVI levels. CONCLUSION Our results indicate higher CAVI levels, therefore, resulting in increased arterial stiffness in the setting of diabetic CKD. Apart from age and MABP, deranged metabolic status, especially increased HbA1c and MCP-1 levels, is also independently associated with increasing CAVI levels in CKD patients. These results emphasize the importance of metabolic control in the development of arterial stiffness in CKD patients, which is an early predictor of developing cardiovascular complications.
Collapse
|
11
|
Tan X, Hu L, Shu Z, Chen L, Li X, Du M, Sun D, Mao X, Deng S, Huang K, Zhang F. Role of CCR2 in the Development of Streptozotocin-Treated Diabetic Cardiomyopathy. Diabetes 2019; 68:2063-2073. [PMID: 31439648 PMCID: PMC6804626 DOI: 10.2337/db18-1231] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Accepted: 07/26/2019] [Indexed: 02/06/2023]
Abstract
CCR2 has been proven to play an important role in diabetes. However, the role of CCR2 in diabetic cardiomyopathy has not been examined. In this study, we investigated the effects of cardiac CCR2 on diabetic cardiomyopathy. We created a model of streptozotocin (STZ)-induced diabetic cardiomyopathy. Expression of CCR2 was upregulated in the hearts of STZ-induced diabetic mice. CCR2 knockout significantly improved STZ-induced cardiac dysfunction and fibrosis. Moreover, deletion of CCR2 inhibited STZ-induced apoptosis and the production of STZ-induced reactive oxygen species in the heart. CCR2 knockout resulted in M2 polarization in hearts of STZ-treated mice. Treatment with a CCR2 inhibitor reversed hyperglycemia-induced cardiac dysfunction in db/db mice. These results suggest that CCR2-induced inflammation and oxidative stress in the heart are involved in the development of diabetic cardiomyopathy and that CCR2 could be a novel target for therapy.
Collapse
Affiliation(s)
- Xin Tan
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- Center for Translational Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lizhi Hu
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Zhiping Shu
- Nuclear Medicine Department, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Long Chen
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xiangrao Li
- Department of Cardiovascular Diseases, the First Affiliated Hospital, Zhengzhou University, Zhengzhou, China
| | - Meng Du
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dan Sun
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xiaoxiang Mao
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shan Deng
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Kai Huang
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fengxiao Zhang
- Clinical Center for Human Genomic Research, Union Hospital, Huazhong University of Science and Technology, Wuhan, China
- Department of Cardiovascular Diseases, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| |
Collapse
|
12
|
Systems biology approaches to identify disease mechanisms and facilitate targeted therapy in the management of glomerular disease. Curr Opin Nephrol Hypertens 2019; 27:433-439. [PMID: 30074515 DOI: 10.1097/mnh.0000000000000446] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
PURPOSE OF REVIEW Current clinical pathological classifications of glomerular diseases are inadequate at predicting patient disease progression or response to therapy. With the advent of precision medicine and its successes in oncology, it is important to understand if similar approaches in glomerular diseases can improve patient management. The purpose of this review is to summarize approaches to obtain comprehensive molecular profiles from human biopsies and utilize them to define the pathophysiology of glomerular failure. RECENT FINDINGS Multicenter research networks have provided the framework to capture both prospective clinical disease course and patterns of end organ damage in biopsy cohorts. With these sample and data sets in hand, efforts are progressing towards molecular disease characterization, identification of novel prognostic marker, development of more precise clinical trials and discovery of predictive biomarkers to more effectively stratify patients to appropriate treatment regiments. Partnerships between academia, public funding agencies and private companies seek to improve timelines and maximize resources while also leveraging domain expertise in an integrated framework to holistically understand disease. SUMMARY The application of system biology techniques within team science frameworks across disciplines and continents will seek to realize the impact of precision medicine to bring urgently needed novel therapeutic options to patients with glomerular disease.
Collapse
|
13
|
Macarie RD, Vadana M, Ciortan L, Tucureanu MM, Ciobanu A, Vinereanu D, Manduteanu I, Simionescu M, Butoi E. The expression of MMP-1 and MMP-9 is up-regulated by smooth muscle cells after their cross-talk with macrophages in high glucose conditions. J Cell Mol Med 2018; 22:4366-4376. [PMID: 29992758 PMCID: PMC6111860 DOI: 10.1111/jcmm.13728] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 05/18/2018] [Indexed: 01/29/2023] Open
Abstract
Patients with diabetes mellitus have an increased risk of myocardial infarction and coronary artery disease-related death, exhibiting highly vulnerable plaques. Many studies have highlighted the major role of macrophages (MAC) and smooth muscle cells (SMC) and the essential part of metalloproteases (MMPs) in atherosclerotic plaque vulnerability. We hypothesize that in diabetes, the interplay between MAC and SMC in high glucose conditions may modify the expression of MMPs involved in plaque vulnerability. The SMC-MAC cross-talk was achieved using trans-well chambers, where human SMC were grown at the bottom and human MAC in the upper chamber in normal (NG) or high (HG) glucose concentration. After cross-talk, the conditioned media and cells were isolated and investigated for the expression of MMPs, MCP-1 and signalling molecules. We found that upon cross-talk with MAC in HG, SMC exhibit: (i) augmented expression of MMP-1 and MMP-9; (ii) significant increase in the enzymatic activity of MMP-9; (iii) higher levels of soluble MCP-1 chemokine which is functionally active and involved in MMPs up-regulation; (iv) activated PKCα signalling pathway which, together with NF-kB are responsible for MMP-1 and MMP-9 up-regulation, and (v) impaired function of collagen assembly. Taken together, our data indicate that MCP-1 released by cell cross-talk in diabetic conditions binds to CCR2 and triggers MMP-1 and MMP-9 over-expression and activity, features that could explain the high vulnerability of atherosclerotic plaque found at diabetic patients.
Collapse
Affiliation(s)
- Razvan Daniel Macarie
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| | - Mihaela Vadana
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| | - Letitia Ciortan
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| | - Monica M. Tucureanu
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| | - Andrea Ciobanu
- Cardiology DepartmentCarol Davila University of Medicine and Pharmacy, University and Emergency Hospital BucharestBucharestRomania
| | - Dragos Vinereanu
- Cardiology DepartmentCarol Davila University of Medicine and Pharmacy, University and Emergency Hospital BucharestBucharestRomania
| | - Ileana Manduteanu
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| | - Maya Simionescu
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| | - Elena Butoi
- Institute of Cellular Biology and Pathology “Nicolae Simionescu”, Biopathology and Therapy of InflammationBucharestRomania
| |
Collapse
|
14
|
Gale JD, Berger B, Gilbert S, Popa S, Sultan MB, Schachar RA, Girgenti D, Perros-Huguet C. A CCR2/5 Inhibitor, PF-04634817, Is Inferior to Monthly Ranibizumab in the Treatment of Diabetic Macular Edema. ACTA ACUST UNITED AC 2018; 59:2659-2669. [DOI: 10.1167/iovs.17-22731] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Jeremy D. Gale
- Inflammation and Immunology Research Unit, Pfizer, Inc., Cambridge, Massachusetts, United States
| | - Brian Berger
- Retina Research Center, Austin, Texas, United States
| | - Steven Gilbert
- Early Clinical Development, Pfizer, Inc., Cambridge, Massachusetts, United States
| | - Serghei Popa
- Department of Rheumatology and Nephrology, State University of Medicine and Pharmacy, N. Testemitanu, Chisinau, Moldova
| | - Marla B. Sultan
- Global Product Development, Pfizer, Inc., New York, New York, United States
| | - Ronald A. Schachar
- Clinical Affairs, Pfizer Essential Health, Pfizer, Inc., San Diego, California, United States
| | - Douglas Girgenti
- Global Product Development, Pfizer, Inc., New York, New York, United States
| | - Christelle Perros-Huguet
- Inflammation and Immunology Research Unit, Pfizer, Inc., Cambridge, Massachusetts, United States
| |
Collapse
|
15
|
Matia-García I, Salgado-Goytia L, Ramos-Arellano LE, Muñoz-Valle JF, Armenta-Solís A, Garibay-Cerdenares OL, Ramírez M, Parra-Rojas I. A possible association between the -2518 A>G MCP-1 polymorphism and insulin resistance in school children. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2018; 62:79-86. [PMID: 29694633 PMCID: PMC10118690 DOI: 10.20945/2359-3997000000012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 08/09/2017] [Indexed: 11/23/2022]
Abstract
Objective Monocyte chemoattractant protein 1 (MCP-1) has been suggested to be involved in the pathophysiology of insulin resistance (IR); therefore, variants in the MCP-1 gene may contribute to the development of this disease. The aim of this study was to analyze the relationship of the -2518 A>G MCP-1 (rs1024611) gene polymorphism with insulin resistance in Mexican children. Subjects and methods A cross-sectional study was performed in 174 children, including 117 children without insulin resistance and 57 children with IR, with an age range of 6-11 years. Levels for serum insulin and high-sensitivity C-reactive protein were determined. The -2518 A>G MCP-1 polymorphism was identified by the polymerase chain reaction-restriction fragment length polymorphism method. Insulin resistance was defined as a HOMA-IR in the upper 75th percentile, which was ≥ 2.4 for all children. Results Genotype frequencies of the rs1024611 polymorphism for the insulin-sensitive group were 17% AA, 48% AG and 35% GG, and the frequency of G allele was 59%, whereas frequencies for the insulin-resistant group were 12% AA, 37% AG and 51% GG, and the frequency of G allele was 69%. The genotype and allele frequencies between groups did not show significant differences. However, the GG genotype was the most frequent in children with IR. The GG genotype was associated with insulin resistance (OR = 2.2, P = 0.03) in a genetic model. Conclusion The -2518 A>G MCP-1 gene polymorphism may be related to the development of insulin resistance in Mexican children.
Collapse
|
16
|
Lee SK. Circulating Monocyte Chemoattractant Protein-1 Levels and Lumbar Bone Mineral Density in Korean Women. J Obes Metab Syndr 2017; 26:287-290. [PMID: 31089532 PMCID: PMC6489469 DOI: 10.7570/jomes.2017.26.4.287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 11/20/2017] [Accepted: 11/29/2017] [Indexed: 11/12/2022] Open
Abstract
Background Monocyte chemoattractant protein-1 (MCP-1) is expressed in adipose tissue, macrophages, endothelial cells, and osteoblasts by parathyroid hormone administration. Circulating MCP-1 levels are positively correlated with the degree of obesity. However, whether circulating MCP-1 affects bone metabolism is unclear. Therefore, in this study, the association between circulating MCP-1 levels and lumbar bone mineral density (BMD) based on menopausal status was assessed. Methods We recruited 109 premenopausal and 46 postmenopausal Korean women and examined the association between circulating MCP-1 concentrations and various parameters including lumbar BMD based on menopausal status. Results A significant increase in body weight, abdominal circumference, body mass index, and MCP-1 levels (from 245.9±73.5 to 336.5±101.7 pg/mL) and significant decrease (from 0.992±0.114 to 0.772±0.113 g/cm2) in lumbar BMD were observed after menopause. However, circulating MCP-1 levels were not correlated with any parameters including lumbar BMD in premenopausal or postmenopausal women. Conclusion Circulating MCP-1 levels were not correlated with lumbar BMD regardless of menopausal status.
Collapse
Affiliation(s)
- Seong-Kyu Lee
- Department of Biochemistry-Molecular Biology, Eulji University School of Medicine, Daejeon; Department of Internal Medicine, Eulji University Hospital, Daejeon, Korea
| |
Collapse
|
17
|
Angelo AGS, Neves CTC, Lobo TF, Godoy RVC, Ono É, Mattar R, Daher S. Monocyte profile in peripheral blood of gestational diabetes mellitus patients. Cytokine 2017; 107:79-84. [PMID: 29241982 DOI: 10.1016/j.cyto.2017.11.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 11/14/2017] [Accepted: 11/29/2017] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Gestational diabetes Mellitus has been considered an inflammatory disease involving different cells and mediators in its development. The role of innate immune cells in GDM physiopathology remains unclear, therefore this study was conducted to assess monocyte profile in GDM patients. DESIGN This was a case-control study including 20 glucose-tolerant pregnant women (controls) and 18 GDM patients. METHODS Flow cytometry was used to assess peripheral blood monocytes subsets (classical, intermediate, non-classical), the expression of TLR4 and CCR2 chemokine receptor (CD192) and cytokines (TNFA, IL6, IL10) secretion by monocytes subsets. In addition, sCD14 serum levels were evaluated by ELISA. RESULTS We observed increased percentage of CD14+ cells, decreased frequency of intermediate monocytes (CD14+CD16+), and lower percentage of circulating monocytes (classical, intermediate and non-classical) that express TLR4 in the diabetic group compared to controls. Soluble CD14+ serum levels were higher in GDM patients compared to controls. There were no differences in the expression of the CCR2 chemokine receptor and cytokines (TNFA, IL6 and IL10) secretion between the studied groups. CONCLUSIONS Our results demonstrated that GDM patients present impaired monocyte profile in the peripheral blood, suggesting that these cells are involved in GDM physiopathology.
Collapse
Affiliation(s)
- Ana G S Angelo
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Carla T C Neves
- Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, Universidade de São Paulo, São Paulo, Brazil.
| | - Thalita F Lobo
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Ramon V C Godoy
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Érika Ono
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Rosiane Mattar
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| | - Silvia Daher
- Department of Obstetrics, Universidade Federal de São Paulo, São Paulo, Brazil.
| |
Collapse
|
18
|
Abstract
Chronic kidney disease (CKD) represents a leading cause of death in the United States. There is no cure for this disease, with current treatment strategies relying on blood pressure control through blockade of the renin-angiotensin system. Such approaches only delay the development of end-stage kidney disease and can be associated with serious side effects. Recent identification of several novel mechanisms contributing to CKD development - including vascular changes, loss of podocytes and renal epithelial cells, matrix deposition, inflammation and metabolic dysregulation - has revealed new potential therapeutic approaches for CKD. This Review assesses emerging strategies and agents for CKD treatment, highlighting the associated challenges in their clinical development.
Collapse
|
19
|
Ohashi W, Hattori K, Hattori Y. Control of Macrophage Dynamics as a Potential Therapeutic Approach for Clinical Disorders Involving Chronic Inflammation. J Pharmacol Exp Ther 2015; 354:240-250. [DOI: 10.1124/jpet.115.225540] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
|
20
|
Gustafson B, Hedjazifar S, Gogg S, Hammarstedt A, Smith U. Insulin resistance and impaired adipogenesis. Trends Endocrinol Metab 2015; 26:193-200. [PMID: 25703677 DOI: 10.1016/j.tem.2015.01.006] [Citation(s) in RCA: 250] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 01/19/2015] [Accepted: 01/21/2015] [Indexed: 12/20/2022]
Abstract
The adipose tissue is crucial in regulating insulin sensitivity and risk for diabetes through its lipid storage capacity and thermogenic and endocrine functions. Subcutaneous adipose tissue (SAT) stores excess lipids through expansion of adipocytes (hypertrophic obesity) and/or recruitment of new precursor cells (hyperplastic obesity). Hypertrophic obesity in humans, a characteristic of genetic predisposition for diabetes, is associated with abdominal obesity, ectopic fat accumulation, and the metabolic syndrome (MS), while the ability to recruit new adipocytes prevents this. We review the regulation of adipogenesis, its relation to SAT expandability and the risks of ectopic fat accumulation, and insulin resistance. The actions of GLUT4 in SAT, including a novel family of lipids enhancing insulin sensitivity/secretion, and the function of bone morphogenetic proteins (BMPs) in white and beige/brown adipogenesis in humans are highlighted.
Collapse
Affiliation(s)
- Birgit Gustafson
- The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, SE-41345 Gothenburg, Sweden
| | - Shahram Hedjazifar
- The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, SE-41345 Gothenburg, Sweden
| | - Silvia Gogg
- The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, SE-41345 Gothenburg, Sweden
| | - Ann Hammarstedt
- The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, SE-41345 Gothenburg, Sweden
| | - Ulf Smith
- The Lundberg Laboratory for Diabetes Research, Department of Molecular and Clinical Medicine, Sahlgrenska Academy at the University of Gothenburg, SE-41345 Gothenburg, Sweden.
| |
Collapse
|
21
|
Mitrović S, Kelava T, Šućur A, Grčević D. Levels of Selected Aqueous Humor Mediators (IL-10, IL-17, CCL2, VEGF, FasL) in Diabetic Cataract. Ocul Immunol Inflamm 2014; 24:159-66. [PMID: 25314260 DOI: 10.3109/09273948.2014.949779] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
PURPOSE To compare levels of selected mediators in serums and aqueous humor (AH) of type 2 diabetes mellitus cataract patients with senile cataract patients, and to determine their association with postoperative corneal edema (CE). METHODS Patients (32 senile and 29 diabetic cataract) undergoing standardized phacoemulsification combined with intraocular lens implantation were recruited. CE was assessed using an ordinal scale (grade 0 to 3). IL-10, CCL2, IL-17, FasL, and VEGF were measured by ELISA. RESULTS Diabetic patients had higher AH levels of VEGF (p = .042) and IL-10 (p = .021), lower AH levels of FasL (p = .048), and higher serum levels of CCL2 (p = .002). AH levels of CCL2 were higher in diabetic patients with more severe CE at the first postoperative day (p = .012). CONCLUSIONS We found disturbed AH microenvironment in diabetic cataract, with significant changes for VEGF, IL-10, and FasL. Higher CCL2 was associated with the development of early postoperative CE in diabetic patients.
Collapse
Affiliation(s)
- Sanja Mitrović
- a Department of Ophthalmology , General Hospital, "Dr. J. Benčević," Slavonski Brod, Croatia; and Ophthalmology Clinic , Slavonski Brod , Croatia and
| | - Tomislav Kelava
- b Department of Physiology and Immunology and Laboratory for Molecular Immunology , University of Zagreb School of Medicine , Zagreb , Croatia
| | - Alan Šućur
- b Department of Physiology and Immunology and Laboratory for Molecular Immunology , University of Zagreb School of Medicine , Zagreb , Croatia
| | - Danka Grčević
- b Department of Physiology and Immunology and Laboratory for Molecular Immunology , University of Zagreb School of Medicine , Zagreb , Croatia
| |
Collapse
|
22
|
Radhakrishnan P, Srikanth P, Seshadri KG, Barani R, Samanta M. Serum monocyte chemoattractant protein-1 is a biomarker in patients with diabetes and periodontitis. Indian J Endocrinol Metab 2014; 18:505-510. [PMID: 25143907 PMCID: PMC4138906 DOI: 10.4103/2230-8210.137498] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION The role of serum Monocyte Chemoattractant Protein-1 (MCP-1) as a biomarker of periodontitis is well documented; however, its role in diabetic patients with periodontitis is unknown. AIM This study was conducted to determine the presence and concentration of serum MCP-1 in diabetic patients with and without periodontitis and correlate it glycemic status with periodontitis. MATERIALS AND METHODS Adult diabetic patients were enrolled and grouped into group I, II, and III based on their glycemic status and serum MCP-1 estimated by ELISA. Linear regression and correlation tests were performed using R statistical software, Medcalc software to observe correlation between the serum MCP-1 and glycated hemoglobin level among different groups. RESULTS Serum samples obtained from 37 patients tested positive for MCP-1. Mean serum MCP-1 concentration was highest (482.3 pg/ml) in group III, lowest (149.3 pg/ml) in group I, and intermediate 398.8 pg/ml in group II. Correlation and regression analysis was done between HbA1c and serum MCP-1. A significant positive correlation (P < 0.001) was observed. Serum MCP-1 increased by 37.278 pg/ml for every 1% rise in HbA1c, and the levels were raised in group II and group III than in group I irrespective of their glycemic status. With an HbA1c range of 6.5-6.9% (group II), the serum MCP-1 values cluster around 380-410 pg/ml. Elevated levels of serum MCP-1 (>500 pg/ml) in three subjects corresponded to HbA1c values more than 12.2% (group III). CONCLUSION To our knowledge, this is the first study to document serum MCP-1 levels in diabetic patients with periodontitis. Glycemic status influences serum MCP-1, and lack of glycemic control contributes to increased serum MCP-1 levels. Serum MCP-1 may thus serve as a biomarker of inflammation and disease progression in diabetes with periodontitis.
Collapse
Affiliation(s)
- Preethi Radhakrishnan
- Department of Microbiology, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Padma Srikanth
- Department of Microbiology, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Krishna G. Seshadri
- Department of Endocrinology, Diabetes and Metabolism, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Ramya Barani
- Department of Microbiology, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| | - Maitreya Samanta
- Environmental Health Engineering, Sri Ramachandra Medical College and Research Institute, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
| |
Collapse
|
23
|
CCL2/CCR2 augments the production of transforming growth factor-beta1, type 1 collagen and CCL2 by human CD45-/collagen 1-positive cells under high glucose concentrations. Clin Exp Nephrol 2013; 17:793-804. [DOI: 10.1007/s10157-013-0796-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 03/11/2013] [Indexed: 12/19/2022]
|
24
|
Tateya S, Kim F, Tamori Y. Recent advances in obesity-induced inflammation and insulin resistance. Front Endocrinol (Lausanne) 2013; 4:93. [PMID: 23964268 PMCID: PMC3737462 DOI: 10.3389/fendo.2013.00093] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 07/11/2013] [Indexed: 12/12/2022] Open
Abstract
It has been demonstrated in rodents and humans that chronic inflammation characterized by macrophage infiltration occurs mainly in adipose tissue or liver during obesity, in which activation of immune cells is closely associated with insulin sensitivity. Macrophages can be classified as classically activated (M1) macrophages that support microbicidal activity or alternatively activated (M2) macrophages that support allergic and antiparasitic responses. In the context of insulin action, M2 macrophages sustain insulin sensitivity by secreting IL-4 and IL-10, while M1 macrophages induce insulin resistance through the secretion of proinflammatory cytokines, such as TNFα. Polarization of M1/M2 is controlled by various dynamic functions of other immune cells. It has been demonstrated that, in a lean state, TH2 cells, Treg cells, natural killer T cells, or eosinophils contribute to the M2 activation of macrophages by secreting IL-4 or IL-10. In contrast, obesity causes alteration of the constituent immune cells, in which TH1 cells, B cells, neutrophils, or mast cells induce M1 activation of macrophages by the elevated secretion of TNFα and IFNγ. Increased secretion of TNFα and free fatty acids from hypertrophied adipocytes also contributes to the M1 activation of macrophages. Since obesity-induced insulin resistance is established by macrophage infiltration and the activation of immune cells inside tissues, identification of the factors that regulate accumulation and the intracellular signaling cascades that define polarization of M1/M2 would be indispensable. Regulation of these factors would lead to the pharmacological inhibition of obesity-induced insulin resistance. In this review, we introduce molecular mechanisms relevant to the pathophysiology and review the most recent studies of clinical applications targeting chronic inflammation.
Collapse
Affiliation(s)
- Sanshiro Tateya
- Department of Internal Medicine, Division of Diabetes, Metabolism, and Endocrinology, Graduate School of Medicine, Kobe University, Kobe, Japan
| | - Francis Kim
- Department of Medicine, University of Washington, Seattle, WA, USA
- Diabetes and Obesity Center of Excellence, University of Washington, Seattle, WA, USA
| | - Yoshikazu Tamori
- Department of Internal Medicine, Division of Diabetes, Metabolism, and Endocrinology, Graduate School of Medicine, Kobe University, Kobe, Japan
- Department of Internal Medicine, Diabetes Center, Chibune Hospital, Osaka, Japan
- *Correspondence: Yoshikazu Tamori, Department of Internal Medicine, Division of Diabetes, Metabolism, and Endocrinology, Graduate School of Medicine, Kobe University, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan e-mail:
| |
Collapse
|
25
|
Fu CP, Lee IT, Sheu WHH, Lee WJ, Liang KW, Lee WL, Lin SY. The levels of circulating and urinary monocyte chemoattractant protein-1 are associated with chronic renal injury in obese men. Clin Chim Acta 2012; 413:1647-51. [PMID: 22609259 DOI: 10.1016/j.cca.2012.05.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2012] [Revised: 04/23/2012] [Accepted: 05/09/2012] [Indexed: 12/22/2022]
Abstract
BACKGROUND Monocyte chemoattractant protein-1 (MCP-1) is a vital inflammatory marker of obesity. Whether obesity by itself increases the risk of chronic kidney injury and accelerates its progression is unknown. More importantly, it is unknown whether obesity could induce kidney injury by MCP-1. METHODS We enrolled 40 obese men and 26 healthy volunteers who served as controls. The degree of insulin resistance was evaluated by the homeostasis model assessment (HOMA-IR) method, and kidney function was determined based on the estimated glomerular filtration rate (eGFR), albuminuria, the concentration of serum cystatin C (S-CysC), and the urinary cystatin C to creatinine ratio (UCCR). RESULTS The obese subjects had significantly higher S-CysC concentration (1114±288 vs.962±169 mg/L, p=0.021) and a higher UCCR (3.5±1.6 vs. 2.5±0.8 μg/g, p=0.002) than those of controls. The concentration of circulating MCP-1 and the urinary MCP-1 to creatinine ratio (UMCR) were higher in the obese group and were correlated with fat mass and HOMA-IR. Using stepwise multiple linear regression analysis, circulating MCP-1 concentration was found to be independently associated with the amount of S-CysC. In addition, the UMCR was independently associated with the UCCR. CONCLUSION The concentrations of circulating and urinary monocyte chemoattractant protein-1 are associated with chronic renal injury in obese men.
Collapse
Affiliation(s)
- Chia-Po Fu
- Division of Endocrinology and Metabolism, Department of Medicine, Taichung Veterans General Hospital, Taichung, Taiwan
| | | | | | | | | | | | | |
Collapse
|
26
|
Papatheodorou K, Papanas N, Papazoglou D, Gioka T, Antonoglou C, Glaros D, Maltezos E. Monocyte chemoattractant protein 1 is correlated with glycemic control and peripheral arterial disease in type 2 diabetic patients with metabolic syndrome. Angiology 2012; 64:223-9. [PMID: 22492254 DOI: 10.1177/0003319712440143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We evaluated the serum levels of monocyte chemoattractant protein 1 (MCP-1) and their association with peripheral arterial disease (PAD) in 199 patients with type 2 diabetes mellitus (T2DM) and metabolic syndrome ([MetS], group A) in comparison with 109 healthy controls (group B). In group A, MCP-1 levels were significantly (P < .001) higher than group B and exhibited a positive correlation with HbA1c (P < .001) and a negative correlation with ankle-brachial index (P < .001). In the same group, patients with PAD had significantly higher MCP-1 levels compared with those without PAD (P < .001). In conclusion, T2DM patients with MetS exhibit higher serum MCP-1 levels. The latter is associated with worse glycemic control and PAD. These results suggest a potential contributory role for MCP-1 in the pathogenesis of PAD in the presence of hyperglycemia and MetS in T2DM.
Collapse
Affiliation(s)
- K Papatheodorou
- Second Department of Internal Medicine, Democritus University of Thrace, University Hospital of Alexandroupolis, Alexandroupolis Greece.
| | | | | | | | | | | | | |
Collapse
|
27
|
Kolattukudy PE, Niu J. Inflammation, endoplasmic reticulum stress, autophagy, and the monocyte chemoattractant protein-1/CCR2 pathway. Circ Res 2012; 110:174-89. [PMID: 22223213 DOI: 10.1161/circresaha.111.243212] [Citation(s) in RCA: 193] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Numerous inflammatory cytokines have been implicated in the pathogenesis of cardiovascular diseases. Monocyte chemoattractant protein (MCP)-1/CCL2 is expressed by mainly inflammatory cells and stromal cells such as endothelial cells, and its expression is upregulated after proinflammatory stimuli and tissue injury. MCP-1 can function as a traditional chemotactic cytokine and also regulates gene transcription. The recently discovered novel zinc-finger protein, called MCPIP (MCP-1-induced protein), initiates a series of signaling events that causes oxidative and endoplasmic reticulum (ER) stress, leading to autophagy that can result in cell death or differentiation, depending on the cellular context. After a brief review of the basic processes involved in inflammation, ER stress, and autophagy, the recently elucidated role of MCP-1 and MCPIP in inflammatory diseases is reviewed. MCPIP was found to be able to control inflammatory response by inhibition of nuclear factor-κB activation through its deubiquitinase activity or by degradation of mRNA encoding a set of inflammatory cytokines through its RNase activity. The potential inclusion of such a novel deubiquitinase in the emerging anti-inflammatory strategies for the treatment of inflammation-related diseases such as cardiovascular diseases and type 2 diabetes is briefly discussed.
Collapse
Affiliation(s)
- Pappachan E Kolattukudy
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32816, USA.
| | | |
Collapse
|
28
|
Ullevig SL, Zhao Q, Zamora D, Asmis R. Ursolic acid protects diabetic mice against monocyte dysfunction and accelerated atherosclerosis. Atherosclerosis 2011; 219:409-16. [PMID: 21752377 PMCID: PMC3199329 DOI: 10.1016/j.atherosclerosis.2011.06.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 05/20/2011] [Accepted: 06/06/2011] [Indexed: 02/08/2023]
Abstract
AIMS Accelerated atherosclerosis is a major diabetic complication initiated by the enhanced recruitment of monocytes into the vasculature. In this study, we examined the therapeutic potential of the phytonutrients ursolic acid (UA) and resveratrol (RES) in preventing monocyte recruitment and accelerated atherosclerosis. METHODS AND RESULTS Dietary supplementation with either RES or UA (0.2%) protected against accelerated atherosclerosis induced by streptozotocin in high-fat diet-fed LDL receptor-deficient mice. However, mice that received dietary UA for 11 weeks were significantly better protected and showed a 53% reduction in lesion formation while mice fed a RES-supplemented diet showed only a 31% reduction in lesion size. Importantly, UA was also significantly more effective in preventing the appearance of proinflammatory GR-1(high) monocytes induced by these diabetic conditions and reducing monocyte recruitment into MCP-1-loaded Matrigel plugs implanted into these diabetic mice. Oxidatively stressed THP-1 monocytes mimicked the behavior of blood monocytes in diabetic mice and showed enhanced responsiveness to monocyte chemoattractant protein-1 (MCP-1) without changing MCP-1 receptor (CCR2) surface expression. Pretreatment of THP-1 monocytes with RES or UA (0.3-10μM) for 15h resulted in the dose-dependent inhibition of H(2)O(2)-accelerated chemotaxis in response to MCP-1, but with an IC(50) of 0.4μM, UA was 2.7-fold more potent than RES. CONCLUSION Dietary UA is a potent inhibitor of monocyte dysfunction and accelerated atherosclerosis induced by diabetes. These studies identify ursolic acid as a potential therapeutic agent for the treatment of diabetic complications, including accelerated atherosclerosis, and provide a novel mechanism for the anti-atherogenic properties of ursolic acid.
Collapse
MESH Headings
- Animals
- Aortic Diseases/etiology
- Aortic Diseases/immunology
- Aortic Diseases/prevention & control
- Atherosclerosis/etiology
- Atherosclerosis/immunology
- Atherosclerosis/prevention & control
- Cardiovascular Agents/pharmacology
- Cell Line
- Chemokine CCL2/metabolism
- Chemotaxis, Leukocyte/drug effects
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/drug therapy
- Diabetes Mellitus, Experimental/immunology
- Diabetes Mellitus, Experimental/physiopathology
- Diabetic Angiopathies/etiology
- Diabetic Angiopathies/immunology
- Diabetic Angiopathies/prevention & control
- Dose-Response Relationship, Drug
- Female
- Humans
- Hyperlipidemias/complications
- Hyperlipidemias/genetics
- Hyperlipidemias/metabolism
- Kidney/drug effects
- Kidney/physiopathology
- Macrophages/drug effects
- Macrophages/immunology
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Monocytes/drug effects
- Monocytes/immunology
- Oxidative Stress/drug effects
- Receptors, CCR2/metabolism
- Receptors, LDL/deficiency
- Receptors, LDL/genetics
- Resveratrol
- Stilbenes/pharmacology
- Time Factors
- Triterpenes/pharmacology
- Ursolic Acid
Collapse
Affiliation(s)
- Sarah L. Ullevig
- Department of Biochemistry, University of Texas Health Science Center at San Antonio
| | - Qingwei Zhao
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio
| | - Debora Zamora
- Department of Clinical Laboratory Sciences, University of Texas Health Science Center at San Antonio
| | - Reto Asmis
- Department of Biochemistry, University of Texas Health Science Center at San Antonio
| |
Collapse
|
29
|
Neumeier M, Bauer S, Brühl H, Eisinger K, Kopp A, Abke S, Walter R, Schäffler A, Buechler C. Adiponectin stimulates release of CCL2, -3, -4 and -5 while the surface abundance of CCR2 and -5 is simultaneously reduced in primary human monocytes. Cytokine 2011; 56:573-80. [PMID: 21890375 DOI: 10.1016/j.cyto.2011.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2011] [Revised: 08/02/2011] [Accepted: 08/05/2011] [Indexed: 11/17/2022]
Abstract
The adipokine adiponectin is well known to affect the function of immune cells and upregulation of CCL2 by adiponectin in monocytes/macrophages has already been reported. In the current study the effect of adiponectin on CCL2, -3, -4, and -5 and their corresponding receptors CCR1, CCR2, and CCR5 has been analyzed. Adiponectin elevates mRNA and protein of the CC chemokines in primary human monocytes. Simultaneously the surface abundance of CCR2 and CCR5 is reduced while CCR1 is not affected. Downregulation of CCR2 by adiponectin is blocked by a CCR2 antagonist although expression of the CCL2 regulated genes CCR2 and TGF-beta 1 is not altered in the adiponectin-incubated monocytes. CCL2, -3, and -5 concentrations measured in supernatants of monocytes of normal-weight (NW), overweight (OW), and type 2 diabetic (T2D) patients positively correlate with BMI and are increased in obesity and T2D. In contrast CCL4 is similarly abundant in the supernatants of all of these monocytes. The degree of adiponectin-mediated induction of the chemokines CCL3, -4, and -5 negatively correlates with their basal levels and upregulation of CCL3 and CCL5 is significantly impaired in OW and T2D cells. Serum concentrations of these chemokines are almost equal in the three groups and do not correlate with the levels in monocyte supernatants. In conclusion these data demonstrate that adiponectin stimulates release of CCL2 to CCL5 in primary human monocytes, and induction in cells of overweight probands is partly impaired. Adiponectin also lowers surface abundance of CCR2 and CCR5 and downregulation of CCR2 seems to depend on autocrine/paracrine effects of CCL2.
Collapse
MESH Headings
- Adiponectin/pharmacology
- Adult
- Aged
- Body Weight/drug effects
- Cell Membrane/drug effects
- Cell Membrane/metabolism
- Cells, Cultured
- Chemokine CCL2/blood
- Chemokine CCL2/genetics
- Chemokine CCL2/metabolism
- Chemokine CCL3/blood
- Chemokine CCL3/genetics
- Chemokine CCL3/metabolism
- Chemokine CCL4/blood
- Chemokine CCL4/genetics
- Chemokine CCL4/metabolism
- Chemokine CCL5/blood
- Chemokine CCL5/genetics
- Chemokine CCL5/metabolism
- Chemokines, CC/blood
- Chemokines, CC/genetics
- Chemokines, CC/metabolism
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/immunology
- Humans
- Male
- Middle Aged
- Monocytes/cytology
- Monocytes/drug effects
- Monocytes/immunology
- Monocytes/metabolism
- Overweight/blood
- Overweight/immunology
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, CCR2/metabolism
- Receptors, CCR5/metabolism
- Subcellular Fractions/drug effects
- Subcellular Fractions/immunology
- Up-Regulation/drug effects
Collapse
Affiliation(s)
- Markus Neumeier
- Department of Internal Medicine I, Regensburg University Hospital, D-93042 Regensburg, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Li H, Deng X, Li Z, Luo C, Liu J, Wang Y. Variation of serum monocyte chemoattractant protein-1 in patients with diabetes and metabolic syndrome. ACTA ACUST UNITED AC 2011; 31:312-316. [PMID: 21671170 DOI: 10.1007/s11596-011-0373-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Indexed: 01/07/2023]
Abstract
This study investigated the variation of serum monocyte chemoattractant protein-1 (MCP-1) in patients with both diabetes mellitus (DM) and metabolic syndrome (MS). Based on the International Diabetes Federation (IDF) diagnostic criteria, 93 patients enrolled in this study were divided into four groups: normal control (NC), simple DM, simple MS, and DM plus MS (DM-MS) groups. The main measures included height, weight, waist circumference (WC), hip circumference, blood pressure, fasting blood glucose, insulin resistance index (HOMA-IR), serum triglyceride (TG), HDL-ch, LDL-ch, and MCP-1. The results showed that the serum levels of MCP-1 in the DM-MS group were significantly increased as compared with those in the DM and MS groups (P<0.05), and the increase in the MCP-1 level in the DM group was much higher than in the MS group (P<0.05). The DM-MS group had the highest HOMA-IR levels, followed by MS, DM and NC groups (P<0.05). Correlation tests showed that the association of MCP-1 with age, HDL-ch, or LDL-ch was insignificant, whereas that of MCP-1 with body mass index (BMI), waist hip rate (WHR), WC, systolic blood pressure (SBP), diastolic blood pressure (DBP), TG, and HOMA-IR was significantly positive. It was concluded that circulating MCP-1 was substantially increased in patients with both DM and MS as compared with that in the patients with DM or MS alone, and the central obese state may contribute to a more vicious proinflammatory condition and insulin resistance in patients with diabetes.
Collapse
Affiliation(s)
- Huiqing Li
- Department of Endocrinology, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Xiuling Deng
- Department of Endocrinology, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Zhenqiong Li
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Changqing Luo
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Jianshe Liu
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Yumei Wang
- Department of Nephrology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| |
Collapse
|
31
|
Hu W, Qiao J, Yang Y, Wang L, Li R. Elevated C-reactive protein and monocyte chemoattractant protein-1 in patients with polycystic ovary syndrome. Eur J Obstet Gynecol Reprod Biol 2011; 157:53-6. [PMID: 21530057 DOI: 10.1016/j.ejogrb.2011.03.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2010] [Revised: 07/30/2010] [Accepted: 03/18/2011] [Indexed: 10/18/2022]
Abstract
OBJECTIVES C-reactive protein (CRP) and monocyte chemoattractant protein-1 (MCP-1) are inflammatory factors involved in the pathogenesis of atherosclerosis. This study aimed to analyse serum concentrations of CRP and MCP-1 in patients with polycystic ovary syndrome (PCOS), and to test the effect of these factors on human THP-1 cells to determine the inflammatory state of these patients. STUDY DESIGN Eighty-five women with PCOS and 65 healthy women with regular menstrual cycles, matched for age and body mass index (BMI), were included in the study. Serum total cholesterol, triglycerides, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein-cholesterol, fasting glucose and fasting insulin were monitored. Serum CRP and MCP-1 were compared between patients with PCOS and controls. Phorbol 12-myristate 13-acetate was used to induce the differentiation of human THP-1 monocytes into THP-1 macrophages. THP-1 macrophages were incubated with serum from patients with PCOS or controls for 24h, and MCP-1 mRNA expression was determined using real-time reverse transcriptase polymerase chain reaction. RESULTS Serum CRP and MCP-1 levels were significantly higher in women with PCOS compared with controls (CRP 1.9±2.0 mg/l vs. 0.9±0.8 mg/l; MCP-1 125.7±68.0 ng/ml vs. 89.8±68.3 ng/ml, respectively). Serum CRP level was positively correlated with BMI (r=0.494, p=0.000), waist:hip ratio (r=0.451, p=0.000), testosterone (r=0.214, p=0.032), homeostasis model assessment of insulin resistance (HOMA-IR; r=0.617, p=0.000) and MCP-1 (r=0.219, p=0.027), and negatively correlated with HDL-C (r=-0.209, p=0.035). MCP-1 level was positively correlated with BMI (r=0.381, p=0.000), waist:hip ratio (r=0.421, p=0.000), HOMA-IR (r=0.265, p=0.007) and triglycerides (r=0.439, p=0.000). MCP-1 mRNA expression in THP-1 cells incubated with serum from patients with PCOS was significantly higher than that in THP-1 cells incubated with serum from controls (p<0.05). CONCLUSION Patients with PCOS suffer low-grade chronic inflammation indicated by higher levels of CRP and MCP-1, which could lead to increased risk of atherogenesis.
Collapse
Affiliation(s)
- Weihong Hu
- Department of Gynaecology and Obstetrics, Peking University Third Hospital, Beijing 100083, China
| | | | | | | | | |
Collapse
|
32
|
Wu JD, Xu XH, Zhu J, Ding B, Du TX, Gao G, Mao XM, Ye L, Lee KO, Ma JH. Effect of exenatide on inflammatory and oxidative stress markers in patients with type 2 diabetes mellitus. Diabetes Technol Ther 2011; 13:143-8. [PMID: 21284481 DOI: 10.1089/dia.2010.0048] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AIM This study was designed to determine the effect of exenatide on inflammatory and oxidative stress markers in type 2 diabetes mellitus (T2DM) patients who were suboptimally controlled with metformin and/or sulfonylurea. SUBJECTS AND METHODS Twenty-three patients with T2DM with inadequate glucose control were randomly divided into two groups: exenatide group (E group) (12 patients, 5 μg b.d. × 4 weeks followed by 10 μg b.d. × 12 weeks) and placebo group (P group) (11 patients). Glycosylated hemoglobin (HbA1c), the seven-point glucose profile, daily mean glucose, and glycemic excursion were determined. The effects of exenatide on 8-iso-prostaglandin F2α (PGF2α), monocyte chemoattractant protein-1 (MCP-1), and high-sensitivity C-reactive protein (hs-CRP) were investigated. RESULTS Exenatide treatment reduced body weight and body mass index (BMI) and improved HbA1c, the seven-point glucose profile, and daily mean glucose compared with placebo (P < 0.05). Limited glycemic excursion was found in the E group compared with the P group (P < 0.05), including a smaller SD and postprandial glucose excursion. In addition, the oxidative stress maker PGF2α was significantly reduced by exenatide treatment (P < 0.05). The inflammatory markers hs-CRP and MCP-1 were also significantly reduced in the E group compared with the P group (P < 0.05). PGF2α was significantly correlated with glycemic excursion (P < 0.05), whereas MCP-1 was significantly correlated with body weight, BMI, glycemic excursion, and HbA1c (P < 0.05 for all). CONCLUSIONS Exenatide treatment reduced patient body weight and BMI, improved HbA1c and the seven-point glucose profile, reduced daily mean glucose, limited glycemic excursion, and reduced oxidative stress and inflammatory markers in patients of T2DM having inadequate glucose control.
Collapse
Affiliation(s)
- Jin-dan Wu
- Department of Endocrinology, Nanjing First Hospital, Nanjing Medical University, Nanjing, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Berchiche YA, Gravel S, Pelletier ME, St-Onge G, Heveker N. Different effects of the different natural CC chemokine receptor 2b ligands on beta-arrestin recruitment, Gαi signaling, and receptor internalization. Mol Pharmacol 2010; 79:488-98. [PMID: 21088225 DOI: 10.1124/mol.110.068486] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The chemokine receptor CCR2, which has been implicated in a variety of inflammatory, autoimmune, and cardiovascular conditions, binds several natural chemokine ligands. Here, we assessed the recruitment of β-arrestin to CCR2 in response to these ligands using bioluminescence resonance energy transfer technology. Compared with CCL2, which was considered as a full agonist, other CCR2 ligands were partial agonists with reduced efficacy and potency. Agonist potencies were not a function of their affinity for CCR2. Efficacy of arrestin recruitment matched that of agonist-induced CCR2 internalization. Although the potency and efficacy rank orders of the ligands in arrestin recruitment were similar to those observed for Gα(i1) activation, arrestin recruitment was at least in part resistant to Gα(i/o)-inactivating pertussis toxin, suggesting partial independence from Gα(i/o). The degree of pertussis toxin resistance of arrestin recruitment was different between the chemokines. Moreover, qualitative differences between the arrestin responses to the different ligands were identified in the stability of the response: although CCL7-induced arrestin recruitment had a half-life of less than 15 min, CCL8 and CCL13 induced stable CCR2-arrestin interactions. Finally, the ligands stabilized different conformations of the CCR2 homodimer. Our results support the validity of models for receptor-ligand interactions in which different ligands stabilize different receptor conformations also for endogenous receptor ligands, with corresponding implications for drug development targeting CCR2.
Collapse
Affiliation(s)
- Yamina A Berchiche
- Department of Biochemistry, Université de Montréal, Montréal, Québec, Canada
| | | | | | | | | |
Collapse
|
34
|
Effect of lignin-derived lignophenols on vascular oxidative stress and inflammation in streptozotocin-induced diabetic rats. Mol Cell Biochem 2010; 348:117-24. [DOI: 10.1007/s11010-010-0645-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2010] [Accepted: 10/28/2010] [Indexed: 10/18/2022]
|
35
|
Knudsen EC, Seljeflot I, Michael A, Eritsland J, Mangschau A, Müller C, Arnesen H, Andersen GØ. Increased levels of CRP and MCP-1 are associated with previously unknown abnormal glucose regulation in patients with acute STEMI: a cohort study. Cardiovasc Diabetol 2010; 9:47. [PMID: 20809989 PMCID: PMC2940874 DOI: 10.1186/1475-2840-9-47] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2010] [Accepted: 09/02/2010] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Inflammation plays an important role in the pathophysiology of both atherosclerosis and type 2 diabetes and some inflammatory markers may also predict the risk of developing type 2 diabetes. The aims of the present study were to assess a potential association between circulating levels of inflammatory markers and hyperglycaemia measured during an acute ST-elevation myocardial infarction (STEMI) in patients without known diabetes, and to determine whether circulating levels of inflammatory markers measured early after an acute STEMI, were associated with the presence of abnormal glucose regulation classified by an oral glucose tolerance test (OGTT) at three-month follow-up in the same cohort. METHODS Inflammatory markers were measured in fasting blood samples from 201 stable patients at a median time of 16.5 hours after a primary percutaneous coronary intervention (PCI). Three months later the patients performed a standardised OGTT. The term abnormal glucose regulation was defined as the sum of the three pathological glucose categories classified according to the WHO criteria (patients with abnormal glucose regulation, n = 50). RESULTS No association was found between inflammatory markers and hyperglycaemia measured during the acute STEMI. However, the levels of C-reactive protein (CRP) and monocyte chemoattractant protein-1 (MCP-1) measured in-hospital were higher in patients classified three months later as having abnormal compared to normal glucose regulation (p = 0.031 and p = 0.016, respectively). High levels of CRP (≥ 75 percentiles (33.13 mg/L)) and MCP-1 (≥ 25 percentiles (190 ug/mL)) were associated with abnormal glucose regulation with an adjusted OR of 3.2 (95% CI 1.5, 6.8) and 7.6 (95% CI 1.7, 34.2), respectively. CONCLUSION Elevated levels of CRP and MCP-1 measured in patients early after an acute STEMI were associated with abnormal glucose regulation classified by an OGTT at three-month follow-up. No significant associations were observed between inflammatory markers and hyperglycaemia measured during the acute STEMI.
Collapse
Affiliation(s)
- Eva C Knudsen
- Center for Clinical Heart Research, Oslo University Hospital, Ullevål, Oslo, Norway
- Department of Cardiology, Oslo University Hospital, Ullevål, Oslo, Norway
- Center for Heart Failure Research, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Ingebjørg Seljeflot
- Center for Clinical Heart Research, Oslo University Hospital, Ullevål, Oslo, Norway
- Department of Cardiology, Oslo University Hospital, Ullevål, Oslo, Norway
- Center for Heart Failure Research, Oslo University Hospital, Ullevål, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Abdelnoor Michael
- Center of Clinical Research, Unit of Epidemiology and Biostatistics, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Jan Eritsland
- Department of Cardiology, Oslo University Hospital, Ullevål, Oslo, Norway
- Center for Heart Failure Research, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Arild Mangschau
- Department of Cardiology, Oslo University Hospital, Ullevål, Oslo, Norway
- Center for Heart Failure Research, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Carl Müller
- Nuclear Medicine, Oslo University Hospital, Ullevål, Oslo, Norway
| | - Harald Arnesen
- Center for Clinical Heart Research, Oslo University Hospital, Ullevål, Oslo, Norway
- Department of Cardiology, Oslo University Hospital, Ullevål, Oslo, Norway
- Center for Heart Failure Research, Oslo University Hospital, Ullevål, Oslo, Norway
- Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Geir Ø Andersen
- Center for Clinical Heart Research, Oslo University Hospital, Ullevål, Oslo, Norway
- Department of Cardiology, Oslo University Hospital, Ullevål, Oslo, Norway
- Center for Heart Failure Research, Oslo University Hospital, Ullevål, Oslo, Norway
| |
Collapse
|
36
|
Kajitani N, Shikata K, Nakamura A, Nakatou T, Hiramatsu M, Makino H. Microinflammation is a common risk factor for progression of nephropathy and atherosclerosis in Japanese patients with type 2 diabetes. Diabetes Res Clin Pract 2010; 88:171-6. [PMID: 20138680 DOI: 10.1016/j.diabres.2010.01.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2009] [Revised: 01/06/2010] [Accepted: 01/11/2010] [Indexed: 12/27/2022]
Abstract
AIM This study aimed to evaluate the change of serum levels of proinflammatory molecules in patients with type 2 diabetes and clarify the involvement of these molecules in diabetic nephropathy and atherosclerosis. METHODS Sixty-six Japanese type 2 diabetic patients (T2DM) and 39 healthy control subjects were enrolled. We assessed clinical parameters, urinary albumin excretion rate (AER), brachial-ankle pulse wave velocity (baPWV), intima media thickness (IMT) and serum levels of proinflammatory molecules. RESULTS Serum levels of IL-6, IP-10 and MCP-1 were significantly higher in T2DM than in control subjects. In T2DM, serum levels of high-sensitivity (hs) CRP, IP-10, hsTNF-alpha, VCAM-1 and E-selectin were positively correlated with AER. Serum levels of IP-10, hsTNF-alpha and VCAM-1 were positively correlated with baPWV. Serum levels of hsCRP, IL-6, IP-10 and hsTNF-alpha were positively correlated with IMT. Multiple linear regression analysis revealed that serum levels of hsTNF-alpha were independently associated with AER (beta=0.235, P=0.038) and serum levels of IP-10 were independently associated with baPWV (beta=0.209, P=0.047) and IMT (beta=0.303, P=0.032). CONCLUSION Our results suggest that low-grade inflammation, microinflammation, may be a common risk factor for diabetic nephropathy and atherosclerosis in Japanese type 2 diabetic patients.
Collapse
Affiliation(s)
- Nobuo Kajitani
- Department of Medicine and Clinical Science, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1, Shikata-cho, Okayama 700-8558, Japan
| | | | | | | | | | | |
Collapse
|
37
|
Younce CW, Wang K, Kolattukudy PE. Hyperglycaemia-induced cardiomyocyte death is mediated via MCP-1 production and induction of a novel zinc-finger protein MCPIP. Cardiovasc Res 2010; 87:665-74. [PMID: 20356868 DOI: 10.1093/cvr/cvq102] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIMS Cardiomyocyte apoptosis contributes to the development of diabetic cardiomyopathy. How the elevated glucose levels associated with diabetes cause cell death is unknown. Here we report that high glucose-induced cardiomyocyte death is mediated via monocyte chemotactic protein-1 (MCP-1) production and induction of a novel zinc-finger protein. METHODS AND RESULTS H9c2 cardiomyoblasts treated with 28 mmol/L glucose were evaluated for MCP-1 production and induction of the zinc-finger protein, MCP-1-induced protein (MCPIP). Disruptors of MCP-1 interaction with its receptor, CCR2, and knockdown of MCPIP with siRNA were used to determine if MCP-1 and MCPIP mediate glucose-induced cell death. The molecular mechanisms were evaluated by assessing reactive oxygen species (ROS) production, endoplasmic reticulum (ER) stress, and autophagy. Key findings were confirmed in isolated neonatal rat cardiomyocytes. Glucose treatment of H9c2 cardiomyoblasts and isolated cardiomyocytes caused MCP-1 production, MCPIP induction, ROS production, ER stress, autophagy, and cell death. Treatment with CCR2 antagonists and knockdown of MCPIP attenuated glucose-induced ROS production, ER stress, autophagy, and cell death. Inhibition of ROS with 1400 W, tiron, and cerium oxide (CeO(2)) nanoparticles attenuated ER stress, autophagy, and cell death. Specific inhibitors of ER stress and knockdown of IRE-1 attenuated glucose-induced autophagy and cell death. Inhibitors of autophagy and knockdown of beclin-1 attenuated glucose-induced death. CONCLUSION Glucose-induced cardiomyocyte death is mediated via MCP-1 production and MCPIP induction, which causes sequential events--ROS production, ER stress, autophagy, and cell death.
Collapse
Affiliation(s)
- Craig W Younce
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Bldg 20, Rm. 136, Orlando, FL 32816, USA
| | | | | |
Collapse
|
38
|
Tateya S, Tamori Y, Kawaguchi T, Kanda H, Kasuga M. An increase in the circulating concentration of monocyte chemoattractant protein-1 elicits systemic insulin resistance irrespective of adipose tissue inflammation in mice. Endocrinology 2010; 151:971-9. [PMID: 20056828 DOI: 10.1210/en.2009-0926] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chronic inflammation in adipose tissue is thought to be important for the development of insulin resistance in obesity. Furthermore, the level of monocyte chemoattractant protein-1 (MCP-1) is increased not only in adipose tissue but also in the circulation in association with obesity. However, it has remained unclear to what extent the increased circulating level of MCP-1 contributes to insulin resistance. We have now examined the relevance of circulating MCP-1 to the development of insulin resistance in mice. The plasma concentration of MCP-1 was increased chronically or acutely in mice to the level observed in obese animals by chronic subcutaneous infusion of recombinant MCP-1 with an osmotic pump or by acute intravenous infusion of MCP-1 with an infusion pump, respectively. Whole-body metabolic parameters as well as inflammatory changes in adipose tissue were examined. A chronic increase in the circulating level of MCP-1 induced insulin resistance, macrophage infiltration into adipose tissue, and an increase in hepatic triacylglycerol content. An acute increase in the circulating MCP-1 concentration also induced insulin resistance but not macrophage infiltration into adipose tissue. In addition, inhibition of signaling by MCP-1 and its receptor CCR2 by administration of a novel CCR2 antagonist ameliorated insulin resistance in mice fed a high-fat diet without affecting macrophage infiltration into adipose tissue. These data indicate that an increase in the concentration of MCP-1 in the circulation is sufficient to induce systemic insulin resistance irrespective of adipose tissue inflammation.
Collapse
Affiliation(s)
- Sanshiro Tateya
- Division of Diabetes, Metabolism, and Endocrinology, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
| | | | | | | | | |
Collapse
|
39
|
Gacka M, Dobosz T, Szymaniec S, Bednarska-Chabowska D, Adamiec R, Sadakierska-Chudy A. Proinflammatory and atherogenic activity of monocytes in type 2 diabetes. J Diabetes Complications 2010; 24:1-8. [PMID: 18835531 DOI: 10.1016/j.jdiacomp.2008.07.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2007] [Revised: 06/15/2008] [Accepted: 07/12/2008] [Indexed: 11/23/2022]
Abstract
UNLABELLED Cytokines secreted by the monocyte-macrophage system play a key role in the progression of atherosclerotic lesions in Type 2 diabetes. The objectives of this study were to assess the influence of cytokine gene expression in monocytes from patients with Type 2 diabetes on direct markers of endothelial injury with regard to clinically manifest atherosclerosis. METHODS Monocytes from 58 patients with Type 2 diabetes and from 22 age-matched healthy volunteers of a control group were isolated in order to assess expression of tumor necrosis factor alpha (TNFalpha), interleukin (IL)-6, IL-8 and IL-10 cytokines (RTPCR, Applied Biosystems). Thrombomodulin concentration was determined using a Diagnostica Stago Immunoenzymatic assay, and circulating endothelial cell numbers were assayed using immunofluorescence studies with CLB-HEC19 antibodies. RESULTS In 28 patients, TNFalpha expression in monocytes was observed. In these patients, as compared to those with undetectable levels of this cytokine's expression, higher hemoglobin A(1c) (P=.012) and thrombomodulin (P=.005) concentrations were found. IL-8 expression was determined in 36 patients. Higher expression of TNFalpha (P=.048) and IL-8 (P=.049) was detected in patients with peripheral arterial disease in contrast to those free from this complication. CONCLUSION TNFalpha and IL-8 play a significant role in the proatherogenic activity of monocytes in Type 2 diabetes. The TNFalpha-connected activity of monocytes may directly determine endothelial dysfunction and injury. The location of atherosclerosis should be taken into account in the assessment of the proinflammatory activity of peripheral blood monocytes.
Collapse
Affiliation(s)
- Małgorzata Gacka
- Department of Angiology, Diabetology and Hypertension, Medical University of Wrocław, Wrocław, Poland.
| | | | | | | | | | | |
Collapse
|
40
|
Kiyici S, Ersoy C, Kaderli A, Fazlioglu M, Budak F, Duran C, Gul OO, Sigirli D, Baran I, Tuncel E, Erturk E, Imamoglu S. Effect of rosiglitazone, metformin and medical nutrition treatment on arterial stiffness, serum MMP-9 and MCP-1 levels in drug naive type 2 diabetic patients. Diabetes Res Clin Pract 2009; 86:44-50. [PMID: 19674806 DOI: 10.1016/j.diabres.2009.07.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Revised: 07/07/2009] [Accepted: 07/13/2009] [Indexed: 11/29/2022]
Abstract
The aim of the study was to evaluate the long-term effect of rosiglitazone and metformin monotherapy with medical nutrition treatment (MNT) and of MNT alone on arterial stiffness, serum monocyte chemoattractant protein (MCP)-1 and matrix metalloproteinase (MMP)-9 in drug naive patients with type 2 diabetes mellitus. Fifty type 2 diabetic patients were randomized to receive rosiglitazone 4 mg/day (n=19) or metformin 850 mg/day (n=16) with MNT or MNT alone (n=15), for 52 weeks. Arterial stiffness was assessed by using large and small artery elasticity index (SAEI and LAEI, respectively). SAEI, LAEI, serum MCP-1 and MMP-9 levels were measured at baseline and following 52 weeks of treatment. SAEI was improved only in the rosiglitazone group, and the difference was still statistically significant when the three groups were compared (p=0.024). There were no differences in LAEI in inter- and intragroup comparisons at the end of the study. Serum MMP-9 levels were decreased in the metformin (-13.5+/-34.8%, p=0.02) and rosiglitazone (-27.2+/-51.0%, p=0.023) groups compared with baseline values, whereas no significant change was seen in serum MCP-1 levels. These results suggest that rosiglitazone monotherapy has favorable effects on arterial stiffness compared with metformin monotherapy independent of glycemic control.
Collapse
Affiliation(s)
- Sinem Kiyici
- Uludag University, Medical Faculty, Department of Endocrinology and Metabolism, Bursa 16059, Turkey.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Qiao M, Zhao Q, Lee CF, Tannock LR, Smart EJ, LeBaron RG, Phelix CF, Rangel Y, Asmis R. Thiol oxidative stress induced by metabolic disorders amplifies macrophage chemotactic responses and accelerates atherogenesis and kidney injury in LDL receptor-deficient mice. Arterioscler Thromb Vasc Biol 2009; 29:1779-86. [PMID: 19592463 DOI: 10.1161/atvbaha.109.191759] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Strengthening the macrophage glutathione redox buffer reduces macrophage content and decreases the severity of atherosclerotic lesions in LDL receptor-deficient (LDLR(-/-)) mice, but the underlying mechanisms were not clear. This study examined the effect of metabolic stress on the thiol redox state, chemotactic activity in vivo, and the recruitment of macrophages into atherosclerotic lesions and kidneys of LDL-R(-/-) mice in response to mild, moderate, and severe metabolic stress. METHODS AND RESULTS Reduced glutathione (GSH) and glutathione disulfide (GSSG) levels in peritoneal macrophages isolated from mildly, moderately, and severe metabolically-stressed LDL-R(-/-) mice were measured by HPLC, and the glutathione reduction potential (E(h)) was calculated. Macrophage E(h) correlated with the macrophage content in both atherosclerotic (r(2)=0.346, P=0.004) and renal lesions (r(2)=0.480, P=0.001) in these mice as well as the extent of both atherosclerosis (r(2)=0.414, P=0.001) and kidney injury (r(2)=0.480, P=0.001). Compared to LDL-R(-/-) mice exposed to mild metabolic stress, macrophage recruitment into MCP-1-loaded Matrigel plugs injected into LDL-R(-/-) mice increased 2.6-fold in moderately metabolically-stressed mice and 9.8-fold in severely metabolically-stressed mice. The macrophage E(h) was a strong predictor of macrophage chemotaxis (r(2)=0.554, P<0.001). CONCLUSIONS Thiol oxidative stress enhances macrophage recruitment into vascular and renal lesions by increasing the responsiveness of macrophages to chemoattractants. This novel mechanism contributes at least in part to accelerated atherosclerosis and kidney injury associated with dyslipidemia and diabetes in mice.
Collapse
Affiliation(s)
- Mu Qiao
- Office of the Dean, School of Health Professions, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Role of MCP-1 in cardiovascular disease: molecular mechanisms and clinical implications. Clin Sci (Lond) 2009; 117:95-109. [PMID: 19566488 DOI: 10.1042/cs20080581] [Citation(s) in RCA: 199] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Many of the major diseases, including cardiovascular disease, are widely recognized as inflammatory diseases. MCP-1 (monocyte chemotactic protein-1) plays a critical role in the development of cardiovascular diseases. MCP-1, by its chemotactic activity, causes diapedesis of monocytes from the lumen to the subendothelial space where they become foam cells, initiating fatty streak formation that leads to atherosclerotic plaque formation. Inflammatory macrophages probably play a role in plaque rupture and the resulting ischaemic episode as well as restenosis after angioplasty. There is strong evidence that MCP-1 plays a major role in myocarditis, ischaemia/reperfusion injury in the heart and in transplant rejection. MCP-1 also plays a role in cardiac repair and manifests protective effects under certain conditions. Such protective effects may be due to the induction of protective ER (endoplasmic reticulum) stress chaperones by MCP-1. Under sustained ER stress caused by chronic exposure to MCP-1, the protection would break down resulting in the development of heart failure. MCP-1 is also involved in ischaemic angiogenesis. The recent advances in our understanding of the molecular mechanisms that might be involved in the roles that MCP-1 plays in cardiovascular disease are reviewed. The gene expression changes induced by the signalling events triggered by MCP-1 binding to its receptor include the induction of a novel zinc-finger protein called MCPIP (MCP-1-induced protein), which plays critical roles in the development of the pathophysiology caused by MCP-1 production. The role of the MCP-1/CCR2 (CC chemokine receptor 2) system in diabetes, which is a major risk factor for cardiovascular diseases, is also reviewed briefly. MCP-1/CCR2- and/or MCPIP-targeted therapeutic approaches to intervene in inflammatory diseases, including cardiovascular diseases, may be feasible.
Collapse
|
43
|
Park KS, Ahn KJ, Kim BJ, Kim HJ, Yoo SM, Kim JY, Lee KH, Baik HW, Lee SK. Circulating concentrations of monocyte chemoattractant protein-1 are associated with menopause status in Korean women. Clin Chim Acta 2009; 403:92-6. [DOI: 10.1016/j.cca.2009.01.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Revised: 01/25/2009] [Accepted: 01/26/2009] [Indexed: 01/08/2023]
|
44
|
Kumekawa M, Fukuda G, Shimizu S, Konno K, Odawara M. Inhibition of monocyte chemoattractant protein-1 by Krüppel-like factor 5 small interfering RNA in the tumor necrosis factor- alpha-activated human umbilical vein endothelial cells. Biol Pharm Bull 2008; 31:1609-13. [PMID: 18670098 DOI: 10.1248/bpb.31.1609] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Krüppel-like factor 5 (KLF5) is one of the pivotal transcriptional factors communicating with inflammatory cytokines. Regulation of monocyte chemoattractant protein-1 (MCP-1) is a target to prevent from inflammation and atherogenic changes in patient with diabetes mellitus. This study was made to determine whether KLF5 may associate with MCP-1 expression in human umbilical vein endothelial cells (HUVECs) induced by tumor necrosis factor-alpha (TNF-alpha), in terms of the initial events of damaged vascular cells in diabetes. MCP-1 expression was markedly augmented by the treatment of TNF-alpha to HUVECs, but this augmentation was inhibited by KLF5 small interfering RNA, which primarily suppressed the expression of KLF5 at mRNA levels in the cells. Though TNF-alpha augmented the levels of endothelin-1 (ET-1) and attenuated those of embryonic form of myosin heavy chain (SMemb) in HUVECs, the inhibition of KLF5 did not affect the levels of these cytokines in the cells. These results suggested that in HUVECs, KLF5 is playing a critical role in regulating the expression of MCP-1, which has been considered to be involved in the diabetic atherogenic events.
Collapse
Affiliation(s)
- Mari Kumekawa
- Third Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan
| | | | | | | | | |
Collapse
|
45
|
Nair PC, Sobhia ME. Fingerprint Directed Scaffold Hopping for Identification of CCR2 Antagonists. J Chem Inf Model 2008; 48:1891-902. [PMID: 18763838 DOI: 10.1021/ci800157j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Pramod C. Nair
- Centre for Pharmacoinformatics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Punjab-160062, India
| | - M. Elizabeth Sobhia
- Centre for Pharmacoinformatics, National Institute of Pharmaceutical Education and Research (NIPER), Sector 67, SAS Nagar, Punjab-160062, India
| |
Collapse
|
46
|
Mallewa JE, Wilkins E, Vilar J, Mallewa M, Doran D, Back D, Pirmohamed M. HIV-associated lipodystrophy: a review of underlying mechanisms and therapeutic options. J Antimicrob Chemother 2008; 62:648-60. [PMID: 18565973 DOI: 10.1093/jac/dkn251] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Lipodystrophy (LD) is a common adverse effect of HIV treatment with highly active antiretroviral therapy, which comprises morphological and metabolic changes. The underlying mechanisms for LD are thought to be due to mitochondrial toxicity and insulin resistance, which results from derangements in levels of adipose tissue-derived proteins (adipocytokines) that are actively involved in energy homeostasis. Several management strategies for combating this syndrome are available, but they all have limitations. They include: switching from thymidine analogues to tenofovir or abacavir in lipoatrophy, or switching from protease inhibitors associated with hyperlipidaemia to a protease-sparing option; injection into the face with either biodegradable fillers such as poly-L-lactic acid and hyaluronic acid (a temporary measure requiring re-treatment) or permanent fillers such as bio-alcamid (with the risk of foreign body reaction or granuloma formation); and structured treatment interruption with the risk of loss of virological control and disease progression. There is therefore a need to explore alternative therapeutic options. Some new approaches including adipocytokines, uridine supplementation, glitazones, growth hormone (or growth hormone-releasing hormone analogues), metformin and statins (used alone or in combination) merit further investigation.
Collapse
Affiliation(s)
- Jane E Mallewa
- Department of Infectious Diseases, North Manchester General Hospital, Delaunays Road, Manchester M8 5RB, UK.
| | | | | | | | | | | | | |
Collapse
|
47
|
Nakamura K, Yamagishi SI, Adachi H, Matsui T, Kurita-Nakamura Y, Takeuchi M, Inoue H, Imaizumi T. Circulating advanced glycation end products (AGEs) and soluble form of receptor for AGEs (sRAGE) are independent determinants of serum monocyte chemoattractant protein-1 (MCP-1) levels in patients with type 2 diabetes. Diabetes Metab Res Rev 2008; 24:109-14. [PMID: 17694504 DOI: 10.1002/dmrr.766] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
BACKGROUND Atherosclerosis is an inflammatory disease. Monocyte chemoattractant protein-1 (MCP-1) is an essential chemokine responsible for the recruitment of monocytes to inflammatory lesions in the vasculature, an initial step of atherosclerosis. Since serum levels of MCP-1 are higher in patients with type 2 diabetes, inhibition of MCP-1 may be a novel therapeutic target for prevention of accelerated atherosclerosis in diabetes. However, little is known about the regulation and determinants of serum MCP-1 levels in patients with diabetes. In this study, we examined the determinants of serum MCP-1 levels in type 2 diabetic patients. METHODS Eighty-six consecutive outpatients with type 2 diabetes (36 male and 50 female; mean age 68.4+/-9.6) underwent a complete history and physical examination, determination of blood chemistries, MCP-1, tumour necrosis factor-alpha, adiponectin, advanced glycation end products (AGEs), and soluble form of receptor for AGEs (sRAGE). We examined the association between MCP-1 levels and those in anthropometric, metabolic and inflammatory variables in these subjects. RESULTS Univariate regression analysis showed that serum levels of MCP-1 were positively associated with AGEs (r=0.386, p<0.001) and sRAGE (r=0.315, p<0.001). After adjusting for age and sex, AGEs (p<0.001) and sRAGE (p<0.05) still remained significant. CONCLUSION The results demonstrate for the first time that circulating levels of AGEs and sRAGE are independent determinants of serum MCP-1 levels in patients with type 2 diabetes. Our present observations suggest the AGEs-RAGE system may be mainly involved in the elevation of MCP-1 in type 2 diabetic patients.
Collapse
Affiliation(s)
- Kazuo Nakamura
- Department of Medicine, Kurume University School of Medicine, Kurume, Japan
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Cullen JP, Morrow D, Jin Y, von Offenberg Sweeney N, Sitzmann JV, Cahill PA, Redmond EM. Resveratrol inhibits expression and binding activity of the monocyte chemotactic protein-1 receptor, CCR2, on THP-1 monocytes. Atherosclerosis 2007; 195:e125-33. [PMID: 17499741 PMCID: PMC2231518 DOI: 10.1016/j.atherosclerosis.2007.03.039] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2006] [Revised: 03/02/2007] [Accepted: 03/27/2007] [Indexed: 11/16/2022]
Abstract
UNLABELLED Monocyte chemotactic protein-1 and its receptor, CCR2, play a key role in atherosclerosis. We determined the effect of the polyphenol, resveratrol, on CCR2 and the mechanisms involved. Resveratrol treatment inhibited 125I-MCP-1 binding to THP-1 cells; 31, 56, 84% decrease for 10, 50 and 100 microM resveratrol, in the absence of any effect on receptor affinity. The inhibitory effect of resveratrol on 125I-MCP-1 binding to THP-1 cells and on CCR2 protein expression determined by FACS analysis was attenuated by treatment with L-NAME (NOS inhibitor), PD98059 (MAPK inhibitor) and LY294002 (PI3K inhibitor), whereas neither X/XO (reactive oxygen species generator) nor ICI182780 (estrogen receptor antagonist) had any effect. Concomitant with a decrease in CCR2 protein expression, resveratrol inhibited THP-1 CCR2 mRNA levels, in the absence of any effect on its stability; 26 and 45% inhibition at 10 and 50 microM resveratrol, respectively. This effect was not altered by co-treatment with L-NAME, PD98059 or ICI182780, but was potentiated by LY294002 and X/XO. CONCLUSIONS Resveratrol inhibits monocyte CCR2 binding activity in an NO-, MAPK- and PI3K-dependent manner, whereas it inhibits CCR2 mRNA in an NO- and MAPK-independent, PI3K-dependent manner. These inhibitory effects of resveratrol on chemokine receptor binding and expression may contribute, in part, to its cardiovascular protective activity in vivo.
Collapse
Affiliation(s)
- John P. Cullen
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642
| | - David Morrow
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642
| | - Ying Jin
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642
| | | | | | - Paul A. Cahill
- Vascular Health Research Centre, Dublin City University, Dublin, Ireland
| | - Eileen M. Redmond
- Department of Surgery, University of Rochester Medical Center, Rochester, NY 14642
| |
Collapse
|
49
|
Coll B, Alonso-Villaverde C, Joven J. Monocyte chemoattractant protein-1 and atherosclerosis: is there room for an additional biomarker? Clin Chim Acta 2007; 383:21-9. [PMID: 17521622 DOI: 10.1016/j.cca.2007.04.019] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2006] [Revised: 03/21/2007] [Accepted: 04/07/2007] [Indexed: 12/28/2022]
Abstract
Atherosclerosis is an inflammatory disease in which several chemokines are implicated. The roles of these molecules extend from the recruitment of circulating inflammatory cells to the activation of inflammatory and pro-thrombotic cascades, which ultimately leads to an atherosclerosis-related event. One of the most studied chemokines is monocyte chemoattractant protein-1 (CCL2), which has been strongly linked to atherosclerosis in both animal and human studies. The higher the expression of either the CCL2 gene or its receptor CCR-2, the higher the likelihood of developing atherosclerosis in genetically-modified animals. Conversely, the deletion of either CCL2 or its receptor is followed by a significant reduction in the development of atherosclerotic plaques. Studies in humans yield controversial results. Most of these studies linked the plasma CCL2 concentration to the occurrence of atherosclerosis or related events; however, this relationship does not seem to be independent of the classical, known risk factors. Currently, there are no suitable analytical tools to reach strong conclusions with respect to the value of plasma CCL2 concentration as a biomarker of atherosclerosis, but experimental evidence suggests that the CCL2/CCR2 pathway should be further explored as a diagnostic, prognostic and therapeutic target.
Collapse
Affiliation(s)
- Blai Coll
- Centre de Recerca Biomedica, Hospital Universitari Sant Joan, 43201, Reus, Spain
| | | | | |
Collapse
|
50
|
Dragomir E, Simionescu M. Monocyte chemoattractant protein-1--a major contributor to the inflammatory process associated with diabetes. Arch Physiol Biochem 2006; 112:239-44. [PMID: 17178597 DOI: 10.1080/13813450601094672] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
There is evidence that strongly suggests that inflammation plays an important role in diabetes and cardiovascular diseases. The high glucose-induced inflammatory process is characterised by the cooperation of a complex network of inflammatory molecules such as cytokines, adhesion molecules, growth factors, and chemokines. Among the chemokine family, monocyte chemoattractant protein (MCP-1) is a potent chemotactic factor, which is upregulated at sites of inflammation being in control of leukocytes trafficking. Here, we review the current knowledge on MCP-1 and its regulation by high glucose level in vascular cells involved in diabetes-induced accelerated atherosclerosis. The signalling pathways involved in MCP-1 modulation by high glucose, the proximal signalling events that stimulate downstream effects and the role of this chemokine in the pathophysiology of diabetes and its complications, are discussed.
Collapse
Affiliation(s)
- Elena Dragomir
- Institute of Cellular Biology and Pathology Nicolae Simionescu, Bucharest, Romania.
| | | |
Collapse
|