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Cázares-Preciado JA, López-Arredondo A, Cruz-Cardenas JA, Luévano-Martínez LA, García-Rivas G, Prado-Garcia H, Brunck MEG. Metabolic features of neutrophilic differentiation of HL-60 cells in hyperglycemic environments. BMJ Open Diabetes Res Care 2024; 12:e004181. [PMID: 39122366 PMCID: PMC11409339 DOI: 10.1136/bmjdrc-2024-004181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 07/17/2024] [Indexed: 08/12/2024] Open
Abstract
INTRODUCTION Chronic hyperglycemia affects neutrophil functions, leading to reduced pathogen killing and increased morbidity. This impairment has been directly linked to increased glycemia, however, how this specifically affects neutrophils metabolism and their differentiation in the bone marrow is unclear and difficult to study. RESEARCH DESIGN AND METHODS We used high-resolution respirometry to investigate the metabolism of resting and activated donor neutrophils, and flow cytometry to measure surface CD15 and CD11b expression. We then used HL-60 cells differentiated towards neutrophil-like cells in standard media and investigated the effect of doubling glucose concentration on differentiation metabolism. We measured the oxygen consumption rate (OCR), and the enzymatic activity of carnitine palmitoyl transferase 1 (CPT1) and citrate synthase during neutrophil-like differentiation. We compared the surface phenotype, functions, and OCR of neutrophil-like cells differentiated under both glucose concentrations. RESULTS Donor neutrophils showed significant instability of CD11b and OCR after phorbol 12-myristate 13-acetate stimulation at 3 hours post-enrichment. During HL-60 neutrophil-like cell differentiation, there was a significant increase in surface CD15 and CD11b expression together with the loss of mitochondrial mass. Differentiated neutrophil-like cells also exhibited higher CD11b expression and were significantly more phagocytic. In higher glucose media, we measured a decrease in citrate synthase and CPT1 activities during neutrophil-like differentiation. CONCLUSIONS HL-60 neutrophil-like differentiation recapitulated known molecular and metabolic features of human neutrophil differentiation. Increased glucose concentrations correlated with features described in hyperglycemic donor neutrophils including increased CD11b and phagocytosis. We used this model to describe metabolic features of neutrophil-like cell differentiation in hyperglycemia and show for the first time the downregulation of CPT1 and citrate synthase activity, independently of mitochondrial mass.
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Affiliation(s)
| | | | | | - Luis Alberto Luévano-Martínez
- Escuela de Medicina y Ciencias de La Salud, Tecnologico de Monterrey, Monterrey, Nuevo Leon, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Mexico
| | - Gerardo García-Rivas
- Escuela de Medicina y Ciencias de La Salud, Tecnologico de Monterrey, Monterrey, Nuevo Leon, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Mexico
| | - Heriberto Prado-Garcia
- Laboratorio de Onco-Inmunobiología, Departamento de Enfermedades Crónico-Degenerativas, Instituto Nacional de Enfermedades Respiratorias Ismael Cosío Villegas, Mexico, Mexico
| | - Marion E G Brunck
- Escuela de Ingeniería y Ciencias, Tecnologico de Monterrey, Monterrey, Nuevo Leon, Mexico
- The Institute for Obesity Research, Tecnologico de Monterrey, Monterrey, Mexico
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Duc Nguyen H, Ardeshir A, Fonseca VA, Kim WK. Cluster of differentiation molecules in the metabolic syndrome. Clin Chim Acta 2024; 561:119819. [PMID: 38901629 DOI: 10.1016/j.cca.2024.119819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/22/2024]
Abstract
Metabolic syndrome (MetS) represents a significant public health concern due to its association with an increased risk of cardiovascular disease, type 2 diabetes, and other serious health conditions. Despite extensive research, the underlying molecular mechanisms contributing to MetS pathogenesis remain elusive. This review aims to provide a comprehensive overview of the molecular mechanisms linking MetS and cluster of differentiation (CD) markers, which play critical roles in immune regulation and cellular signaling. Through an extensive literature review with a systematic approach, we examine the involvement of various CD markers in MetS development and progression, including their roles in adipose tissue inflammation, insulin resistance, dyslipidemia, and hypertension. Additionally, we discuss potential therapeutic strategies targeting CD markers for the management of MetS. By synthesizing current evidence, this review contributes to a deeper understanding of the complex interplay between immune dysregulation and metabolic dysfunction in MetS, paving the way for the development of novel therapeutic interventions.
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Affiliation(s)
- Hai Duc Nguyen
- Division of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA, USA
| | - Amir Ardeshir
- Division of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA, USA; Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, USA
| | - Vivian A Fonseca
- Department Endocrinology Metabolism & Diabetes, Tulane University School of Medicine, New Orleans, LA, USA
| | - Woong-Ki Kim
- Division of Microbiology, Tulane National Primate Research Center, Tulane University, Covington, LA, USA; Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA, USA.
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Caimi G, Lo Presti R, Carollo C, Montana M, Carlisi M. Polymorphonuclear phenotypical expression of CD18, at baseline and after in vitro activation, in several clinical disorders: Revision of our case series. Clin Hemorheol Microcirc 2023; 85:41-58. [PMID: 37482987 DOI: 10.3233/ch-231771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
BACKGROUND In relation to the different and important roles of the beta2 integrins, we have revisited the expression of polymorphonuclear leukocyte CD18 in several clinical disorders, at baseline and after in vitro activation. SUBJECTS we have examined subjects with type 1 diabetes mellitus, vascular atherosclerotic disease, type 2 diabetes mellitus without and with macrovascular complications, chronic renal failure on conservative treatment, essential hypertension, deep venous thrombosis, acute ischemic stroke and subjects with venous leg ulcers. METHODS unfractioned leukocyte suspension was prepared according to the Mikita's method, while the leukocyte were separated into mononuclear and polymorphonuclear cells with a Ficoll-Hypaque medium. Using specific monoclonal antibody, the CD18 expression was evaluated with cytofluorimetric analysis, using FACScan (Becton Dickinson) be Cellquest software; the activation in vitro with PMA was effected according to modified Yasui and Masuda methods. RESULTS in type 1 diabetes mellitus, at baseline CD18 is under expressed in comparison with normal control, and not changes after PMA activation were observed; in subjects with vascular atherosclerotic disease, in type 2 diabetes mellitus CD18 is over expressed at baseline but does not vary after activation; in subjects with chronic renal failure, essential hypertension and in subjects with acute ischemic stroke the CD18 up-regulate at baseline compared to normal control, and it increases further after activation; in subjects with deep venous thrombosis the CD18 expression is not different from control group at baseline, but it increases after activation; finally, in subjects with venous leg ulcers the CD18 is normally expressed at baseline, and it does not change after PMA activation. CONCLUSIONS in the different clinical disorders, the trend of this integrin subunit provides some specific information, useful to select the best therapeutic strategy in clinical practice.
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Affiliation(s)
- Gregorio Caimi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Rosalia Lo Presti
- Department of Psychology, Educational Science and Human Movement, University of Palermo, Palermo, Italy
| | - Caterina Carollo
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Maria Montana
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
| | - Melania Carlisi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Palermo, Italy
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Does Genetic Predisposition Contribute to the Exacerbation of COVID-19 Symptoms in Individuals with Comorbidities and Explain the Huge Mortality Disparity between the East and the West? Int J Mol Sci 2021; 22:ijms22095000. [PMID: 34066804 PMCID: PMC8125927 DOI: 10.3390/ijms22095000] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/25/2021] [Accepted: 05/06/2021] [Indexed: 12/15/2022] Open
Abstract
The elderly and patients with several comorbidities experience more severe cases of coronavirus disease 2019 (COVID-19) than healthy patients without underlying medical conditions. However, it is unclear why these people are prone to developing alveolar pneumonia, rapid exacerbations, and death. Therefore, we hypothesized that people with comorbidities may have a genetic predisposition that makes them more vulnerable to various factors; for example, they are likely to become more severely ill when infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). To test this hypothesis, we searched the literature extensively. Polymorphisms of genes, such as those that encode angiotensin-converting enzyme 1 (ACE1), have been associated with numerous comorbidities, such as cardiovascular disease, hypertension, diabetes, chronic kidney disease, and obesity, and there are potential mechanisms to explain these associations (e.g., DD-type carriers have greater ACE1 activity, and patients with a genetic alpha-1 anti-trypsin (AAT) deficiency lack control over inflammatory mediators). Since comorbidities are associated with chronic inflammation and are closely related to the renin–angiotensin–aldosterone system (RAAS), these individuals may already have a mild ACE1/ACE2 imbalance before viral infection, which increases their risk for developing severe cases of COVID-19. However, there is still much debate about the association between ACE1 D/I polymorphism and comorbidities. The best explanation for this discrepancy could be that the D allele and DD subtypes are associated with comorbidities, but the DD genotype alone does not have an exceptionally large effect. This is also expected since the ACE1 D/I polymorphism is only an intron marker. We also discuss how polymorphisms of AAT and other genes are involved in comorbidities and the severity of SARS-CoV-2 infection. Presumably, a combination of multiple genes and non-genetic factors is involved in the establishment of comorbidities and aggravation of COVID-19.
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Jin F, Honma K, Mochizuki K, Goda T. Undernutrition in Pregnant Rats Induces Glucose Intolerance with Enhanced Expression of Inflammation-Related Genes in Peripheral Leukocytes of the Offspring. J Nutr Sci Vitaminol (Tokyo) 2020; 65:534-540. [PMID: 31902867 DOI: 10.3177/jnsv.65.534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Impaired glucose tolerance (IGT) induces chronic inflammation and subsequent development of complications triggered by arteriosclerosis. Moreover, undernutrition in pregnant rodents can induce IGT in their offspring. Here, we assessed whether undernutrition in pregnant rats would induce chronic inflammation in their offspring by measuring the expression levels of inflammation-related genes in peripheral blood leukocytes. Pregnant Wistar rats were divided into two groups: the control group received an American Institute of Nutrition Rodent diet (AIN-93G) ad libitum, and the undernutrition group had their diet restricted by 50% (w/w) compared with the control group from day 10 of pregnancy until birth of the offspring. Subsequently, mothers and pups were allowed to access the AIN-93G diet freely. At day 35 after birth, male pups were fasted for 4 h and subsequently orally administered with glucose solution (2 g/kg body weight). Blood glucose area under the curve (AUC) after glucose loading was significantly greater in the undernutrition group than the control group. The mRNA levels for inflammatory cytokines were increased by glucose loading especially in the undernutrition group. Expressions of genes encoding S100A9 and cell adhesion molecule CD11b were increased by glucose loading in the undernutrition group. Thus, undernutrition of pregnant rats during mid to late gestation induced the expression of inflammation-related genes in peripheral blood leukocytes of their offspring, with the development of IGT and impaired insulin secretion.
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Affiliation(s)
- Fangru Jin
- Laboratory of Nutritional Physiology, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka
| | - Kazue Honma
- Laboratory of Nutritional Physiology, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka
| | - Kazuki Mochizuki
- Laboratory of Food and Nutritional Sciences, Faculty of Life and Environmental Sciences, Department of Local Produce and Food Sciences, University of Yamanashi
| | - Toshinao Goda
- Laboratory of Nutritional Physiology, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka
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Dong X, Nao J, Gao Y. Peripheral Monocyte Count Predicts Outcomes in Patients with Acute Ischemic Stroke Treated with rtPA Thrombolysis. Neurotox Res 2019; 37:469-477. [PMID: 31478125 DOI: 10.1007/s12640-019-00103-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Revised: 07/10/2019] [Accepted: 08/22/2019] [Indexed: 12/12/2022]
Abstract
The aim of this study was to investigate the predictive value of the monocyte count as a prognostic biomarker on 90 days in patients with acute ischemic stroke (AIS) treated with recombinant tissue plasminogen activator (rtPA) thrombolysis. In total, 206 patients with AIS treated in our institute between 2013 and 2018 were retrospectively enrolled. All patients received rtPA thrombolytic therapy within 4.5 h of AIS onset. Using receiver operating characteristic (ROC) curve analysis, patients were divided into two groups according to monocyte count: a low monocyte count (LMC) group (monocytes < 0.53 × 109/L) and a high monocyte count (HMC) group (monocytes ≥ 0.53 × 109/L). Patients' functional outcomes 90 days after AIS were assessed using the modified Rankin Scale. More patients had a poor outcome in the HMC group than in the LMC group (49.32% vs.31.58%, p = 0.012). Multivariate logistic regression analysis revealed that infarct volume (odds ratio = 1.03, 95% confidence interval 1.01-1.04, p < 0.001), systolic pressure at admission (odds ratio = 1.02, 95% confidence interval 1.00-1.04, p = 0.016), fasting blood glucose at admission (odds ratio = 1.41, 95% confidence interval 1.18-1.67, p < 0.001), and monocyte count ≥ 0.53 × 109/L (odds ratio = 2.25, 95% confidence interval 1.09-4.62, p = 0.028) were independently associated with a poor outcome in AIS patients treated with rtPA thrombolysis. A peripheral monocyte count ≥ 0.53 × 109/L is an independent prognostic marker on 90-days in patients with AIS treated with rtPA thrombolysis.
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Affiliation(s)
- Xiaoyu Dong
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, People's Republic of China
| | - Jianfei Nao
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, People's Republic of China
| | - Yan Gao
- Department of Neurology, Shengjing Hospital of China Medical University, 36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, People's Republic of China.
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Circulating Monocyte and Lymphocyte Populations in Healthy First-Degree Relatives of Type 2 Diabetic Patients at Fasting and during Short-Term Hyperinsulinemia. Mediators Inflamm 2019; 2019:1491083. [PMID: 30983877 PMCID: PMC6432732 DOI: 10.1155/2019/1491083] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/27/2019] [Indexed: 12/11/2022] Open
Abstract
Aim The development of type 2 diabetes (T2DM) is associated with disturbances of immune status that may be reflected by alterations of the profile of circulating immune cells. In order to study whether there exists genetic predisposition to these alterations, we investigated the relative content of circulating monocyte and lymphocyte subpopulations at fasting condition and upon stimulation by short-term hyperinsulinemia in nondiabetic first-degree relatives (FDR) of T2DM patients and in control subjects. Materials and Methods 19 nondiabetic (FDR) and 19 control subjects without a family history of diabetes (all men) matched for age and BMI underwent 2-hour hyperinsulinemic-euglycemic clamp. Blood samples taken before and at the end of the clamp were used for the flow cytometry analysis of lymphocyte and monocyte populations and for the assessment of cytokine levels. Results At fasting conditions, FDR showed a higher CD4/CD8 ratio of peripheral lymphocytes, a higher percentage of Th17 lymphocytes, and a lower content of intermediate monocytes when compared to controls. The CD4/CD8 ratio correlated with fat mass, insulin, and HOMA-IR in the entire group of subjects. Hyperinsulinemia decreased a relative content of peripheral CD4+ and increased a relative content of CD8+ T lymphocytes, thus decreasing the CD4/CD8 ratio by 18-22% in both groups of subjects. In FDR but not in controls, the decrease of CD4+ T lymphocyte content was partially based on the decrease of TH2 and TH17 lymphocyte subpopulations. In control subjects but not in FDR, the number of intermediate monocytes has declined in response to hyperinsulinemia. Conclusion The alterations of the CD4/CD8 lymphocyte ratio, relative content of TH17 cells, and intermediate monocytes in FDR are features of genetic predisposition to T2DM and may play a role in pathogenesis of T2DM. Short-term hyperinsulinemia affected mostly the immune cell populations deregulated in FDR subjects, which suggests important interplay between immune system homeostasis and insulin levels.
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Newcombe EA, Camats-Perna J, Silva ML, Valmas N, Huat TJ, Medeiros R. Inflammation: the link between comorbidities, genetics, and Alzheimer's disease. J Neuroinflammation 2018; 15:276. [PMID: 30249283 PMCID: PMC6154824 DOI: 10.1186/s12974-018-1313-3] [Citation(s) in RCA: 336] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Accepted: 09/11/2018] [Indexed: 12/21/2022] Open
Abstract
Alzheimer’s disease (AD) is a neurodegenerative disorder, most cases of which lack a clear causative event. This has made the disease difficult to characterize and, thus, diagnose. Although some cases are genetically linked, there are many diseases and lifestyle factors that can lead to an increased risk of developing AD, including traumatic brain injury, diabetes, hypertension, obesity, and other metabolic syndromes, in addition to aging. Identifying common factors and trends between these conditions could enhance our understanding of AD and lead to the development of more effective treatments. Although the immune system is one of the body’s key defense mechanisms, chronic inflammation has been increasingly linked with several age-related diseases. Moreover, it is now well accepted that chronic inflammation has an important role in the onset and progression of AD. In this review, the different inflammatory signals associated with AD and its risk factors will be outlined to demonstrate how chronic inflammation may be influencing individual susceptibility to AD. Our goal is to bring attention to potential shared signals presented by the immune system during different conditions that could lead to the development of successful treatments.
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Affiliation(s)
- Estella A Newcombe
- Neurula Laboratory, Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Building 79, Brisbane, 4072, QLD, Australia.
| | - Judith Camats-Perna
- Neurula Laboratory, Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Building 79, Brisbane, 4072, QLD, Australia
| | - Mallone L Silva
- Neurula Laboratory, Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Building 79, Brisbane, 4072, QLD, Australia
| | - Nicholas Valmas
- Queensland Brain Institute, The University of Queensland, Brisbane, 4072, QLD, Australia
| | - Tee Jong Huat
- Neurula Laboratory, Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Building 79, Brisbane, 4072, QLD, Australia.,Centre for Stem Cell Ageing and Regenerative Engineering, The University of Queensland, Brisbane, 4072, QLD, Australia
| | - Rodrigo Medeiros
- Neurula Laboratory, Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland, Building 79, Brisbane, 4072, QLD, Australia.
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Cignarella A, Tedesco S, Cappellari R, Fadini GP. The continuum of monocyte phenotypes: Experimental evidence and prognostic utility in assessing cardiovascular risk. J Leukoc Biol 2018; 103:1021-1028. [PMID: 29603382 DOI: 10.1002/jlb.5ru1217-477rr] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 02/23/2018] [Accepted: 02/23/2018] [Indexed: 12/15/2022] Open
Abstract
The monocyte-macrophage cell lineage represents a major player in innate immunity, and is involved in many physiologic and pathologic conditions. Particularly, monocyte-macrophages play a very important role in atherosclerosis and cardiovascular disease. Monocyte heterogeneity is well recognized but the biologic and clinical meaning of the various monocyte subtypes is not entirely understood. Traditionally, monocytes can be divided in classical, intermediate, and nonclassical based on expression of the surface antigens CD14 and CD16. While macrophage diversity is now well recognized to organize as a continuum, monocyte subsets have long been considered as separated entities. However, mounting evidence obtained by tracking the ontology of human monocytes help clarifying that monocytes mature from classical to nonclassical ones, through an intermediate phenotype. This concept is therefore best depicted as a continuum, whereas the subdivision into discrete CD14/CD16 subsets appears an oversimplification. In this review, we discuss the evidence supporting the existence of a monocyte continuum along with the technical challenges of monocyte characterization. In particular, we describe the advantage of considering monocytes along a continuous distribution for the evaluation of cardiovascular risk. We make the point that small transition along the monocyte continuum better reflects cardiovascular risk than a simplified analysis of discrete monocyte subsets. Recognizing the monocyte continuum can be helpful to model other pathophysiologic conditions where these cells are involved.
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Affiliation(s)
| | | | | | - Gian Paolo Fadini
- Department of Medicine, University of Padova, Padova, Italy
- Venetian Institute of Molecular Medicine, Padova, Italy
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Bioenergetic state regulates innate inflammatory responses through the transcriptional co-repressor CtBP. Nat Commun 2017; 8:624. [PMID: 28935892 PMCID: PMC5608947 DOI: 10.1038/s41467-017-00707-0] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2014] [Accepted: 07/21/2017] [Indexed: 01/04/2023] Open
Abstract
The innate inflammatory response contributes to secondary injury in brain trauma and other disorders. Metabolic factors such as caloric restriction, ketogenic diet, and hyperglycemia influence the inflammatory response, but how this occurs is unclear. Here, we show that glucose metabolism regulates pro-inflammatory NF-κB transcriptional activity through effects on the cytosolic NADH:NAD+ ratio and the NAD(H) sensitive transcriptional co-repressor CtBP. Reduced glucose availability reduces the NADH:NAD+ ratio, NF-κB transcriptional activity, and pro-inflammatory gene expression in macrophages and microglia. These effects are inhibited by forced elevation of NADH, reduced expression of CtBP, or transfection with an NAD(H) insensitive CtBP, and are replicated by a synthetic peptide that inhibits CtBP dimerization. Changes in the NADH:NAD+ ratio regulate CtBP binding to the acetyltransferase p300, and regulate binding of p300 and the transcription factor NF-κB to pro-inflammatory gene promoters. These findings identify a mechanism by which alterations in cellular glucose metabolism can influence cellular inflammatory responses. Several metabolic factors affect cellular glucose metabolism as well as the innate inflammatory response. Here, the authors show that glucose metabolism regulates pro-inflammatory responses through effects on the cytosolic NADH:NAD+ ratio and the NAD(H)-sensitive transcription co-repressor CtBP.
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Analysis of inflammatory cytokine and TLR expression levels in Type 2 Diabetes with complications. Sci Rep 2017; 7:7633. [PMID: 28794498 PMCID: PMC5550417 DOI: 10.1038/s41598-017-07230-8] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Accepted: 06/23/2017] [Indexed: 12/29/2022] Open
Abstract
The pathogenesis and complications of type 2 diabetes (T2DM) are closely linked with defective glucose metabolism, obesity, cardiovascular disease and an inability to mount an effective immune response to certain pathogenic organisms. Perturbations in key innate immune receptors known as Toll-like receptors (TLRs) and inflammatory mediators such as IL-6, TNFα and IL-1β have been linked with T2DM. Herein, we sought to establish whether patients with T2DM and underlying complications exhibit perturbations in cytokine and TLR expression. Serum cytokine and mRNA levels of cytokines/TLRs in monocytes (M) and neutrophils (N) were measured in a cohort of 112 diabetic patients: good glycaemic control without complications (GC), good glycaemic control with complications (GCC), poor glycaemic control without complications (PC) and poor glycaemic control with complications (PCC) and compared them with 34 non-diabetic volunteers (NGT). Serum cytokine levels were normal in all study participants. In the GC group, cytokine and TLR gene expression were enhanced compared to NGT. In contrast, suppressed cytokine and TLR gene expression were evident in PC, GCC & PCC groups when compared to the GC. In conclusion, whereas serum pro-inflammatory cytokine levels are unaltered in T2DM patients, differences in inflammatory gene profiles exist among the T2DM patient groups.
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Szablewski L, Sulima A. The structural and functional changes of blood cells and molecular components in diabetes mellitus. Biol Chem 2017; 398:411-423. [DOI: 10.1515/hsz-2016-0196] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Accepted: 10/14/2016] [Indexed: 12/13/2022]
Abstract
Abstract
It is known fact that diabetes mellitus (DM) affects blood cells. Changes in the erythrocyte membrane, disorder in hemoglobin oxygen-binding and modification in mechanical characteristics, are effects of hyperglycemia on red blood cells. Altered susceptibility infection of patients with diabetes has been ascribed to a depression in the function of polymorphonuclear leukocytes. Neutrophil function in patients with diabetes with good glucose control is slightly different than in healthy ones. DM causes significant changes in lymphocytes metabolism and their functions. Patients with diabetes, presenting with acute coronary syndrome, are at higher risk of cardiovascular complications and recurrent ischemic events in comparison to non-diabetic counterparts. Various mechanisms, including endothelial dysfunction, platelet hyperactivity, and abnormalities in coagulation and fibrynolysis have been implicated for this increased atherothrombotic risk. There are many other alterations of blood cells due to DM. In the present review we focused on modifications of blood cells due to DM. Then, as a second point, we explored how the changes affect functions of red blood cells, white blood cells and platelets.
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Honma K, Mawatari R, Iikeda M, Mochizuki K, Goda T. Fasting during the suckling-weaning transient period of rats induces inflammatory gene expression in the adipose tissue and peripheral leukocytes. Nutrition 2016; 32:1268-74. [PMID: 27222344 DOI: 10.1016/j.nut.2016.03.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Revised: 02/21/2016] [Accepted: 03/15/2016] [Indexed: 12/17/2022]
Abstract
OBJECTIVE Nutritional deficiency during developmental stages could be associated with subsequent development of inflammation-related metabolic abnormalities. In this study, we examined the effects of a 3-d fast during the suckling-weaning transient period of rats, and subsequent intake of high-fat-high-sucrose (HF) and low-fat-high-starch (LF) diets in adulthood, on the expression of inflammatory genes in adipose tissue and peripheral leukocytes. METHODS Male Sprague-Dawley rats were deprived of food for 3 d during the suckling-weaning transient period, and were subsequently fed an HF or LF diet for 14 wk from 17 wk of age. Serum monocyte chemoattractant protein-1 (MCP-1) concentration and mRNA levels of inflammatory genes in mesenteric adipose tissues were assessed at 31 wk of age. The mRNA levels of inflammatory genes at 0 h and 2 h after oral glucose load at 30 wk of age in peripheral leukocytes were measured. RESULTS Fasting induced circulating MCP-1 protein in rats fed an LF diet but not an HF diet. The HF diet induced high mRNA levels of tumor necrosis factor-α, interleukin-1β, and S100 proteins in peripheral leukocytes at 2 h after glucose load in fasted rats when compared with controls. Expression of CD11c, an activated macrophage marker, was induced in the fasted group given an HF diet during adulthood. CONCLUSIONS Fasting rats during the suckling-weaning transient period and an HF diet intake during adulthood enhance inflammation by promoting the expression of inflammatory genes in adipose tissue and peripheral leukocytes.
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Affiliation(s)
- Kazue Honma
- Laboratory of Nutritional Physiology, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan
| | - Riko Mawatari
- Laboratory of Nutritional Physiology, School of Food and Nutritional Sciences, University of Shizuoka, Shizuoka, Japan
| | - Misa Iikeda
- Laboratory of Nutritional Physiology, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan
| | - Kazuki Mochizuki
- Laboratory of Nutritional Physiology, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan; Laboratory of Food and Nutritional Sciences, Department of Local Produce and Food Sciences, Faculty of Life and Environmental Sciences, University of Yamanashi, Yamanashi, Japan
| | - Toshinao Goda
- Laboratory of Nutritional Physiology, Graduate School of Nutritional and Environmental Sciences, University of Shizuoka, Shizuoka, Japan.
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de Vries MA, Alipour A, Klop B, van de Geijn GJM, Janssen HW, Njo TL, van der Meulen N, Rietveld AP, Liem AH, Westerman EM, de Herder WW, Cabezas MC. Glucose-dependent leukocyte activation in patients with type 2 diabetes mellitus, familial combined hyperlipidemia and healthy controls. Metabolism 2015; 64:213-7. [PMID: 25456098 DOI: 10.1016/j.metabol.2014.10.011] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 09/27/2014] [Accepted: 10/12/2014] [Indexed: 11/17/2022]
Abstract
BACKGROUND Leukocyte activation has been associated with vascular complications in type 2 diabetes mellitus (T2DM). Hyperglycemia may be involved in this leukocyte activation. Our aim was to investigate the role of elevated glucose concentrations on leukocyte activation in patients with a wide range of insulin sensitivity. METHODS Leukocyte activation was determined after ingestion of 75 gram glucose in subjects with T2DM, familial combined hyperlipidemia (FCH) and healthy controls. Leukocyte activation markers were measured by flow cytometry. Postprandial changes were calculated as the area under the curve (AUC), and the incremental area under the curve corrected for baseline values (dAUC). RESULTS 51 Subjects (20 T2DM, 17 FCH and 14 controls) were included. Fasting neutrophil CD66b expression and CD66b-AUC were respectively 36% and 39% higher in T2DM patients than in controls (p=0.004 and p=0.003). Fasting neutrophil CD66b expression correlated positively with glucose-AUC (Spearman's rho 0.481, p<0.001) and HbA1c (rho 0.433, p=0.002). Although fasting monocyte CD11b expression was not significantly different between subjects, monocyte CD11b-AUC was 26% higher in T2DM than in controls (p=0.006). Similar trends were observed for FCH patients. Monocyte CD11b-dAUC correlated positively with glucose-AUC (rho 0.322, p=0.022) and HbA1c (rho 0.319, p=0.023). CONCLUSIONS These data suggest that both acute and chronic hyperglycemia, associated with insulin resistance as seen in T2DM and FCH, are involved in the increased fasting and postprandial leukocyte activation observed in these conditions.
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MESH Headings
- Antigens, CD/blood
- Antigens, CD/metabolism
- Biomarkers/blood
- Biomarkers/metabolism
- Blood Glucose/analysis
- CD11b Antigen/blood
- CD11b Antigen/metabolism
- Cell Adhesion Molecules/blood
- Cell Adhesion Molecules/metabolism
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/immunology
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/physiopathology
- Female
- GPI-Linked Proteins/blood
- GPI-Linked Proteins/metabolism
- Glucose Tolerance Test
- Glycated Hemoglobin/analysis
- Humans
- Hyperglycemia/etiology
- Hyperlipidemia, Familial Combined/blood
- Hyperlipidemia, Familial Combined/immunology
- Hyperlipidemia, Familial Combined/metabolism
- Hyperlipidemia, Familial Combined/physiopathology
- Insulin Resistance
- Leukocytes/immunology
- Leukocytes/metabolism
- Male
- Middle Aged
- Monocytes/immunology
- Monocytes/metabolism
- Neutrophils/immunology
- Neutrophils/metabolism
- Up-Regulation
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Affiliation(s)
- Marijke A de Vries
- Department of Internal Medicine, Center for Diabetes and Cardiovascular Risk Management, Sint Franciscus Gasthuis, Rotterdam, the Netherlands.
| | - Arash Alipour
- Department of Internal Medicine, Center for Diabetes and Cardiovascular Risk Management, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Boudewijn Klop
- Department of Internal Medicine, Center for Diabetes and Cardiovascular Risk Management, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | | | - Hans W Janssen
- Department of Clinical Chemistry, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Tjin L Njo
- Department of Clinical Chemistry, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Noëlle van der Meulen
- Department of Internal Medicine, Center for Diabetes and Cardiovascular Risk Management, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Arie P Rietveld
- Department of Internal Medicine, Center for Diabetes and Cardiovascular Risk Management, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Anho H Liem
- Department of Cardiology, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Elsbeth M Westerman
- Department of Clinical Pharmacy, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
| | - Wouter W de Herder
- Department of Endocrinology, Erasmus Medical Center Rotterdam, The Netherlands
| | - Manuel Castro Cabezas
- Department of Internal Medicine, Center for Diabetes and Cardiovascular Risk Management, Sint Franciscus Gasthuis, Rotterdam, the Netherlands
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