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Sartori LF, Tsemberis E, Hernandez T, Luchette K, Zhang D, Farooqi S, Bush J, McCann JC, Balamuth F, Weiss SL. Distinct mitochondrial respiration profiles in pediatric patients with febrile illness versus sepsis. Pediatr Res 2024:10.1038/s41390-024-03420-z. [PMID: 39095577 DOI: 10.1038/s41390-024-03420-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 06/06/2024] [Accepted: 07/08/2024] [Indexed: 08/04/2024]
Abstract
OBJECTIVE Mitochondrial dysfunction, linked to sepsis-related organ failure, is unknown in febrile illness. METHODS Prospective study of children in an Emergency Department (ED) with febrile illness or without infection (ED controls); secondary analysis of ICU patients with sepsis or without infection (ICU controls). Mitochondrial oxygen consumption measured in peripheral blood mononuclear cells using respirometry, with primary outcome of spare respiratory capacity (SRC). Mitochondrial content measured as citrate synthase (CS: febrile illness and ED controls) and mitochondrial to nuclear DNA ratio (mtDNA:nDNA: all groups). RESULTS SRC was lower in febrile illness (6.7 ± 3.0 pmol/sec/106 cells) and sepsis (5.7 ± 4.7) than ED/PICU controls (8.5 ± 3.7; both p < 0.05), but not different between febrile illness and sepsis (p = 0.26). Low SRC was driven by increased basal respiration in febrile illness and decreased maximal uncoupled respiration in sepsis. Differences were no longer significant after adjustment for patient demographics. Febrile illness demonstrated lower CS activity than ED controls (p = 0.07) and lower mtDNA:nDNA than both ED/PICU controls and sepsis (both p < 0.05). CONCLUSION Mitochondrial SRC was reduced in both febrile illness and sepsis, but due to distinct mitochondrial profiles and impacted by demographics. Further work is needed to determine if mitochondrial profiles could differentiate febrile illness from early sepsis. IMPACT STATEMENT Mitochondrial dysfunction has been linked to organ failure in sepsis, but whether mitochondrial alterations are evident in febrile illness without sepsis is unknown. In our study, while mitochondrial spare respiratory capacity (SRC), an index of cellular bioenergetic reserve under stress, was reduced in children with both febrile illness and sepsis compared to children without infections, low SRC was driven by increased basal respiration in febrile illness compared with decreased maximal uncoupled respiration in sepsis. Additional research is needed to understand if distinct mitochondrial profiles could be used to differentiate febrile illness from early sepsis in children.
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Affiliation(s)
- Laura F Sartori
- Department of Emergency Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
| | - Elena Tsemberis
- Department of Emergency Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Tyne Hernandez
- Department of Emergency Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Katherine Luchette
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Donglan Zhang
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | | | - Jenny Bush
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - John C McCann
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Fran Balamuth
- Department of Emergency Medicine, Children's Hospital of Philadelphia, Philadelphia, PA, USA
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Scott L Weiss
- Nemours Children's Health, Wilmington, DE, USA
- Sidney Kimmel Medical College - Thomas Jefferson University, Philadelphia, PA, USA
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Greenwood JC, Talebi FM, Jang DH, Spelde AE, Gordon EK, Horak J, Acker MA, Kilbaugh TJ, Shofer FS, Augoustides JG, Brenner JS, Muzykantov VR, Bakker J, Abella BS. Anaerobic Lactate Production Is Associated With Decreased Microcirculatory Blood Flow and Decreased Mitochondrial Respiration Following Cardiovascular Surgery With Cardiopulmonary Bypass. Crit Care Med 2024; 52:1239-1250. [PMID: 38578158 PMCID: PMC11250782 DOI: 10.1097/ccm.0000000000006289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
OBJECTIVES Quantify the relationship between perioperative anaerobic lactate production, microcirculatory blood flow, and mitochondrial respiration in patients after cardiovascular surgery with cardiopulmonary bypass. DESIGN Serial measurements of lactate-pyruvate ratio (LPR), microcirculatory blood flow, plasma tricarboxylic acid cycle cycle intermediates, and mitochondrial respiration were compared between patients with a normal peak lactate (≤ 2 mmol/L) and a high peak lactate (≥ 4 mmol/L) in the first 6 hours after surgery. Regression analysis was performed to quantify the relationship between clinically relevant hemodynamic variables, lactate, LPR, and microcirculatory blood flow. SETTING This was a single-center, prospective observational study conducted in an academic cardiovascular ICU. PATIENTS One hundred thirty-two patients undergoing elective cardiovascular surgery with cardiopulmonary bypass. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Patients with a high postoperative lactate were found to have a higher LPR compared with patients with a normal postoperative lactate (14.4 ± 2.5 vs. 11.7 ± 3.4; p = 0.005). Linear regression analysis found a significant, negative relationship between LPR and microcirculatory flow index ( r = -0.225; β = -0.037; p = 0.001 and proportion of perfused vessels: r = -0.17; β = -0.468; p = 0.009). There was not a significant relationship between absolute plasma lactate and microcirculation variables. Last, mitochondrial complex I and complex II oxidative phosphorylation were reduced in patients with high postoperative lactate levels compared with patients with normal lactate (22.6 ± 6.2 vs. 14.5 ± 7.4 pmol O 2 /s/10 6 cells; p = 0.002). CONCLUSIONS Increased anaerobic lactate production, estimated by LPR, has a negative relationship with microcirculatory blood flow after cardiovascular surgery. This relationship does not persist when measuring lactate alone. In addition, decreased mitochondrial respiration is associated with increased lactate after cardiovascular surgery. These findings suggest that high lactate levels after cardiovascular surgery, even in the setting of normal hemodynamics, are not simply a type B phenomenon as previously suggested.
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Affiliation(s)
- John C. Greenwood
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Fatima M. Talebi
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - David H. Jang
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Audrey E. Spelde
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Emily K. Gordon
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Jiri Horak
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Michael A. Acker
- Division of Cardiovascular Surgery, Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Todd J. Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Center for Mitochondrial and Epigenomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Frances S. Shofer
- Department of Epidemiology & Biostatistics, Department of Emergency Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - John G.T. Augoustides
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Jacob S. Brenner
- Division of Pulmonary, Allergy, & Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Vladimir R. Muzykantov
- Department of Pharmacology and Center for Translational Targeted Therapeutics and Nanomedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jan Bakker
- Department of Intensive Care Adults, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Benjamin S. Abella
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
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Pak YK, Im S, Choi HS, Lind L, Lind M, Lee HK. Correlation between environmental pollutant exposure and cardiopulmonary health by serum biomarker analysis in the Swedish elderly population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024:1-14. [PMID: 39037202 DOI: 10.1080/09603123.2024.2382306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 07/16/2024] [Indexed: 07/23/2024]
Abstract
Persistent organic pollutants (POPs) affect human health through the aryl hydrocarbon receptor (AhR) pathway and are implicated in mitochondrial dysfunction. Using data from the PIVUS study, we investigated the associations of serum AhR ligand (POP)-mediated luciferase activity (AhRL), mitochondrial ATP production inhibiting substances (MIS-ATP), and those affecting reactive oxygen species (MIS-ROS) with several metabolic syndrome (MetS) and cardiopulmonary function parameters. These include insulin resistance (HOMA-IR), inflammation, oxidative stress, and cardiopulmonary variables (FVC, FEV1, LV-EF, CCA distensibility). MIS-ATP showed significant correlations with HOMA-IR and pulmonary functions, indicating its direct impact of MIS-ATP on metabolic and pulmonary health. MIS-ROS correlated with oxidative stress markers and CCA distensibility, suggesting a role in systemic inflammatory responses. This study highlights the intricate relationships between environmental pollutant mixture and cardiopulmonary health in MetS as indicated by biomarkers of POP exposure in the elderly population, suggesting POP exposure may influence MetS onset and progression through mitochondrial dysfunction.
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Affiliation(s)
- Youngmi Kim Pak
- Department of Physiology, Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Kyung Hee University School of Medicine, Seoul, South Korea
- Department of Neuroscience, Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Kyung Hee University School of Medicine, Seoul, South Korea
| | - Suyeol Im
- Department of Neuroscience, Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Kyung Hee University School of Medicine, Seoul, South Korea
| | - Hoon Sung Choi
- Department of Internal Medicine, Chung Ang University College of Medicine, Seoul, South Korea
| | - Lars Lind
- Department of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Monica Lind
- Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden
| | - Hong Kyu Lee
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
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Attachaipanich T, Sriwichaiin S, Apaijai N, Kerdphoo S, Thongmung N, Vathesatogkit P, Sritara P, Chattipakorn N, Kitiyakara C, Chattipakorn SC. An Increase in Vascular Stiffness Is Positively Associated With Mitochondrial Bioenergetics Impairment of Peripheral Blood Mononuclear Cells in the Older Adults. J Gerontol A Biol Sci Med Sci 2024; 79:glae095. [PMID: 38567632 DOI: 10.1093/gerona/glae095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Indexed: 04/04/2024] Open
Abstract
The cardio-ankle vascular index (CAVI) is a noninvasive parameter reflecting vascular stiffness. CAVI correlates with the burden of atherosclerosis and future cardiovascular events. Mitochondria of peripheral blood mononuclear cells (PBMCs) have been identified as a noninvasive source for assessing systemic mitochondrial bioenergetics. This study aimed to investigate the relationship between CAVI values and mitochondrial bioenergetics of PBMCs in the older adults.. This cross-sectional study enrolled participants from the Electricity Generating Authority of Thailand between 2017 and 2018. A total of 1 640 participants with an ankle-brachial index greater than 0.9 were included in this study. All participants were stratified into 3 groups based on their CAVI values as high (CAVI ≥ 9), moderate (9 > CAVI ≥ 8), and low (CAVI < 8), in which each group comprised 702, 507, and 431 participants, respectively. The extracellular flux analyzer was used to measure mitochondrial respiration of isolated PBMCs. The mean age of the participants was 67.9 years, and 69.6% of them were male. After adjusted with potential confounders including age, sex, smoking status, body mass index, diabetes, dyslipidemia, hypertension, and creatinine clearance, participants with high CAVI values were independently associated with impaired mitochondrial bioenergetics, including decreased basal respiration, maximal respiration, and spare respiratory capacity, as well as increased mitochondrial reactive oxygen species. This study demonstrated that CAVI measurement reflects the underlying impairment of cellular mitochondrial bioenergetics in PBMCs. Further longitudinal studies are necessary to establish both a causal relationship between CAVI measurement and underlying cellular dysfunction.
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Affiliation(s)
- Tanawat Attachaipanich
- Faculty of Medicine, Cardiac Electrophysiology Research and Training Center, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Medicine, Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Sirawit Sriwichaiin
- Faculty of Medicine, Cardiac Electrophysiology Research and Training Center, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Medicine, Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Nattayaporn Apaijai
- Faculty of Medicine, Cardiac Electrophysiology Research and Training Center, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Medicine, Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Sasiwan Kerdphoo
- Faculty of Medicine, Cardiac Electrophysiology Research and Training Center, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Medicine, Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Nisakron Thongmung
- Office of Research Academic and Innovation, Faculty of Medicine Ramathibodi Hospital Mahidol University, Bangkok, Thailand
| | - Prin Vathesatogkit
- Department of Medicine, Faculty of Medicine Ramathibodi Hospital Mahidol University, Bangkok, Thailand
| | - Piyamitr Sritara
- Department of Medicine, Faculty of Medicine Ramathibodi Hospital Mahidol University, Bangkok, Thailand
| | - Nipon Chattipakorn
- Faculty of Medicine, Cardiac Electrophysiology Research and Training Center, Chiang Mai University, Chiang Mai, Thailand
- Faculty of Medicine, Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- The Academy of Science, The Royal Society of Thailand, Bangkok
| | - Chagriya Kitiyakara
- Department of Medicine, Faculty of Medicine Ramathibodi Hospital Mahidol University, Bangkok, Thailand
| | - Siriporn C Chattipakorn
- Faculty of Medicine, Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
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Wang DD, Naumova AV, Isquith D, Sapp J, Huynh KA, Tucker I, Balu N, Voronyuk A, Chu B, Ordovas K, Maynard C, Tian R, Zhao XQ, Kim F. Dapagliflozin reduces systemic inflammation in patients with type 2 diabetes without known heart failure. Cardiovasc Diabetol 2024; 23:197. [PMID: 38849829 PMCID: PMC11161924 DOI: 10.1186/s12933-024-02294-z] [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: 03/19/2024] [Accepted: 06/03/2024] [Indexed: 06/09/2024] Open
Abstract
OBJECTIVE Sodium glucose cotransporter 2 (SGLT2) inhibitors significantly improve cardiovascular outcomes in diabetic patients; however, the mechanism is unclear. We hypothesized that dapagliflozin improves cardiac outcomes via beneficial effects on systemic and cardiac inflammation and cardiac fibrosis. RESEARCH AND DESIGN METHODS This randomized placebo-controlled clinical trial enrolled 62 adult patients (mean age 62, 17% female) with type 2 diabetes (T2D) without known heart failure. Subjects were randomized to 12 months of daily 10 mg dapagliflozin or placebo. For all patients, blood/plasma samples and cardiac magnetic resonance imaging (CMRI) were obtained at time of randomization and at the end of 12 months. Systemic inflammation was assessed by plasma IL-1B, TNFα, IL-6 and ketone levels and PBMC mitochondrial respiration, an emerging marker of sterile inflammation. Global myocardial strain was assessed by feature tracking; cardiac fibrosis was assessed by T1 mapping to calculate extracellular volume fraction (ECV); and cardiac tissue inflammation was assessed by T2 mapping. RESULTS Between the baseline and 12-month time point, plasma IL-1B was reduced (- 1.8 pg/mL, P = 0.003) while ketones were increased (0.26 mM, P = 0.0001) in patients randomized to dapagliflozin. PBMC maximal oxygen consumption rate (OCR) decreased over the 12-month period in the placebo group but did not change in patients receiving dapagliflozin (- 158.9 pmole/min/106 cells, P = 0.0497 vs. - 5.2 pmole/min/106 cells, P = 0.41), a finding consistent with an anti-inflammatory effect of SGLT2i. Global myocardial strain, ECV and T2 relaxation time did not change in both study groups. CLINICAL TRIAL GOV REGISTRATION NCT03782259.
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Affiliation(s)
- Dennis D Wang
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Anna V Naumova
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Daniel Isquith
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Jamie Sapp
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Kim A Huynh
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Isabella Tucker
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Niranjan Balu
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Anna Voronyuk
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Baocheng Chu
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Karen Ordovas
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
- Department of Radiology, University of Washington, Seattle, WA, USA
| | - Charles Maynard
- Department of Health Systems and Population Health, University of Washington, Seattle, WA, USA
| | - Rong Tian
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
| | - Xue-Qiao Zhao
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Francis Kim
- Division of Cardiology, Department of Medicine, University of Washington, Seattle, WA, USA.
- University of Washington, 850 Republican St, Box 358055, Seattle, WA, 98104, USA.
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DeConne TM, Fancher IS, Edwards DG, Trott DW, Martens CR. CD8 + T-cell metabolism is related to cerebrovascular reactivity in middle-aged adults. Am J Physiol Regul Integr Comp Physiol 2024; 326:R416-R426. [PMID: 38406845 DOI: 10.1152/ajpregu.00267.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 02/27/2024]
Abstract
Cerebrovascular reactivity (CVR) decreases with advancing age, contributing to increased risk of cognitive impairment; however, the mechanisms underlying the age-related decrease in CVR are incompletely understood. Age-related changes to T cells, such as impaired mitochondrial respiration, increased inflammation, likely contribute to peripheral and cerebrovascular dysfunction in animals. However, whether T-cell mitochondrial respiration is related to cerebrovascular function in humans is not known. Therefore, we hypothesized that peripheral T-cell mitochondrial respiration would be positively associated with CVR and that T-cell glycolytic metabolism would be negatively associated with CVR. Twenty middle-aged adults (58 ± 5 yr) were recruited for this study. T cells were separated from peripheral blood mononuclear cells. Cellular oxygen consumption rate (OCR) and extracellular acidification rate (ECAR, a marker of glycolytic activity) were measured using extracellular flux analysis. CVR was quantified using the breath-hold index (BHI), which reflects the change in blood velocity in the middle-cerebral artery (MCAv) during a 30-s breath-hold. In contrast to our hypothesis, we found that basal OCR in CD8+ T cells (β = -0.59, R2 = 0.27, P = 0.019) was negatively associated with BHI. However, in accordance with our hypothesis, we found that basal ECAR (β = -2.20, R2 = 0.29, P = 0.015) and maximum ECAR (β = -50, R2 = 0.24, P = 0.029) were negatively associated with BHI in CD8+ T cells. There were no associations observed in CD4+ T cells. These associations appeared to be primarily mediated by an association with the pressor response to the breath-hold test. Overall, our findings suggest that CD8+ T-cell respiration and glycolytic activity may influence CVR in humans.NEW & NOTEWORTHY Peripheral T-cell metabolism is related to in vivo cerebrovascular reactivity in humans. Higher glycolytic metabolism in CD8+ T cells was associated with lower cerebrovascular reactivity to a breath-hold in middle-aged adults, which is possibly reflective of a more proinflammatory state in midlife.
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Affiliation(s)
- Theodore M DeConne
- Department of Internal Medicine, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States
| | - Ibra S Fancher
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, United States
| | - David G Edwards
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, United States
| | - Daniel W Trott
- Department of Kinesiology, University of Texas at Arlington, Arlington, Texas, United States
| | - Christopher R Martens
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware, United States
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Paradis S, Charles AL, Giannini M, Meyer A, Lejay A, Talha S, Laverny G, Charloux A, Geny B. Targeting Mitochondrial Dynamics during Lower-Limb Ischemia Reperfusion in Young and Old Mice: Effect of Mitochondrial Fission Inhibitor-1 (mDivi-1). Int J Mol Sci 2024; 25:4025. [PMID: 38612835 PMCID: PMC11012338 DOI: 10.3390/ijms25074025] [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: 02/29/2024] [Revised: 03/25/2024] [Accepted: 04/01/2024] [Indexed: 04/14/2024] Open
Abstract
Peripheral arterial disease (PAD) strikes more than 200 million people worldwide and has a severe prognosis by potentially leading to limb amputation and/or death, particularly in older patients. Skeletal muscle mitochondrial dysfunctions and oxidative stress play major roles in this disease in relation with ischemia-reperfusion (IR) cycles. Mitochondrial dynamics through impairment of fission-fusion balance may contribute to skeletal muscle pathophysiology, but no data were reported in the setting of lower-limb IR despite the need for new therapeutic options. We, therefore, investigated the potential protective effect of mitochondrial division inhibitor-1 (mDivi-1; 50 mg/kg) in young (23 weeks) and old (83 weeks) mice submitted to two-hour ischemia followed by two-hour reperfusion on systemic lactate, muscle mitochondrial respiration and calcium retention capacity, and on transcripts specific for oxidative stress and mitochondrial dynamics. At the systemic levels, an IR-related increase in circulating lactate was still major despite mDivi-1 use (+305.9% p < 0.0001, and +269.4% p < 0.0001 in young and old mice, respectively). Further, IR-induced skeletal muscle mitochondrial dysfunctions (more severely impaired mitochondrial respiration in old mice (OXPHOS CI state, -68.2% p < 0.0001 and -84.9% p < 0.0001 in 23- and 83-week mice) and reduced calcium retention capacity (-46.1% p < 0.001 and -48.2% p = 0.09, respectively) were not corrected by mDivi-1 preconditioning, whatever the age. Further, mDivi-1 treatment did not oppose superoxide anion production (+71.4% p < 0.0001 and +37.5% p < 0.05, respectively). At the transcript level, markers of antioxidant enzymes (SOD 1, SOD 2, catalase, and GPx) and fission markers (Drp1, Fis) remained unchanged or tended to be decreased in the ischemic leg. Fusion markers such as mitofusin 1 or 2 decreased significantly after IR in both groups. In conclusion, aging enhanced the deleterious effects or IR on muscle mitochondrial respiration, and in this setting of lower-limb IR, mDivi-1 failed to protect the skeletal muscle both in young and old mice.
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Affiliation(s)
- Stéphanie Paradis
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Department of Physiology and Functional Explorations, University Hospital of Strasbourg, 67000 Strasbourg, France
| | - Anne-Laure Charles
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
| | - Margherita Giannini
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Department of Physiology and Functional Explorations, University Hospital of Strasbourg, 67000 Strasbourg, France
| | - Alain Meyer
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Department of Physiology and Functional Explorations, University Hospital of Strasbourg, 67000 Strasbourg, France
| | - Anne Lejay
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Vascular Surgery Department, University Hospital of Strasbourg, 67000 Strasbourg, France
| | - Samy Talha
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Department of Physiology and Functional Explorations, University Hospital of Strasbourg, 67000 Strasbourg, France
| | - Gilles Laverny
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 67400 Illkirch, France;
| | - Anne Charloux
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Department of Physiology and Functional Explorations, University Hospital of Strasbourg, 67000 Strasbourg, France
| | - Bernard Geny
- Biomedicine Research Center of Strasbourg (CRBS), UR 3072, “Mitochondria, Oxidative Stress and Muscle Plasticity”, Faculty of Medicine, University of Strasbourg, 67081 Strasbourg, France; (S.P.); (A.-L.C.); (M.G.); (A.M.); (A.L.); (S.T.); (A.C.)
- Department of Physiology and Functional Explorations, University Hospital of Strasbourg, 67000 Strasbourg, France
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8
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Wang D, Naumova A, Isquith D, Sapp J, Huynh KA, Tucker I, Balu N, Voronyuk A, Chu B, Ordovas K, Maynard C, Tian R, Zhao XQ, Kim F. Dapagliflozin Reduces Systemic Inflammation in Patients with Type 2 Diabetes Without Known Heart Failure. RESEARCH SQUARE 2024:rs.3.rs-4132581. [PMID: 38585865 PMCID: PMC10996801 DOI: 10.21203/rs.3.rs-4132581/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Objective Sodium glucose cotransporter 2 (SGLT2) inhibitors significantly improve cardiovascular outcomes in diabetic patients; however, the mechanism is unclear. We hypothesized that dapagliflozin improves cardiac outcomes via beneficial effects on systemic and cardiac inflammation and cardiac fibrosis. Research and Design Methods This randomized placebo-controlled clinical trial enrolled 62 adult patients (mean age 62, 17% female) with type 2 diabetes (T2D) without known heart failure. Subjects were randomized to 12 months of daily 10 mg dapagliflozin or placebo. For all patients, blood/plasma samples and cardiac magnetic resonance imaging (CMRI) were obtained at time of randomization and at the end of 12 months. Systemic inflammation was assessed by plasma IL-1B, TNFα, IL-6 and ketone levels and PBMC mitochondrial respiration, an emerging marker of sterile inflammation. Cardiac fibrosis was assessed by T1 mapping to calculate extracellular volume fraction (ECV); cardiac tissue inflammation was assessed by T2 mapping. Results Between the baseline and 12-month time point, plasma IL-1B was reduced (-1.8 pg/mL, P=0.003) while ketones were increased (0.26 mM, P=0.0001) in patients randomized to dapagliflozin. PBMC maximal oxygen consumption rate (OCR) decreased over the 12-month period in the placebo group but did not change in patients receiving dapagliflozin (-158.9 pmole/min/106cells, P=0.0497 vs -45.2 pmole/min/106cells, P=0.41), a finding consistent with an anti-inflammatory effect of SGLT2i. ECV and T2 relaxation time did not change in both study groups. Conclusion This study demonstrates that 12 months of dapagliflozin reduces IL-1B mediated systemic inflammation but affect cardiac fibrosis in T2D. Clinical Trialgov Registration NCT03782259.
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9
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Korepanov VA, Atabekov TA, Rebrova TY, Batalov RE, Afanasiev SA. Relationship between mitochondrial respiratory dysfunction of blood mononuclear cells and heart failure severity. J Geriatr Cardiol 2024; 21:130-134. [PMID: 38440343 PMCID: PMC10908581 DOI: 10.26599/1671-5411.2024.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2024] Open
Affiliation(s)
- Viacheslav A. Korepanov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Tariel A. Atabekov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Tatiana Yu. Rebrova
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Roman E. Batalov
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
| | - Sergey A. Afanasiev
- Cardiology Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk, Russia
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10
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Hogg M, Wolfschmitt EM, Wachter U, Zink F, Radermacher P, Vogt JA. Ex Vivo 13C-Metabolic Flux Analysis of Porcine Circulating Immune Cells Reveals Cell Type-Specific Metabolic Patterns and Sex Differences in the Pentose Phosphate Pathway. Biomolecules 2024; 14:98. [PMID: 38254698 PMCID: PMC10813356 DOI: 10.3390/biom14010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 12/08/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
In general, females present with stronger immune responses than males, but scarce data are available on sex-specific differences in immunometabolism. In this study, we characterized porcine peripheral blood mononuclear cell (PBMC) and granulocyte energy metabolism using a Bayesian 13C-metabolic flux analysis, which allowed precise determination of the glycolytic, pentose phosphate pathway (PPP), and tricarboxylic acid cycle (TCA) fluxes, together with an assessment of the superoxide anion radical (O2•-) production and mitochondrial O2 consumption. A principal component analysis allowed for identifying the cell type-specific patterns of metabolic plasticity. PBMCs displayed higher TCA cycle activity, especially glutamine-derived aspartate biosynthesis, which was directly related to mitochondrial respiratory activity and inversely related to O2•- production. In contrast, the granulocytes mainly utilized glucose via glycolysis, which was coupled to oxidative PPP utilization and O2•- production rates. The granulocytes of the males had higher oxidative PPP fluxes compared to the females, while the PBMCs of the females displayed higher non-oxidative PPP fluxes compared to the males associated with the T helper cell (CD3+CD4+) subpopulation of PBMCs. The observed sex-specific differences were not directly attributable to sex steroid plasma levels, but we detected an inverse correlation between testosterone and aldosterone plasma levels and showed that aldosterone levels were related with non-oxidative PPP fluxes of both cell types.
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Affiliation(s)
- Melanie Hogg
- Institute for Anesthesiological Pathophysiology and Process Engineering, Ulm University Medical Center, 89081 Ulm, Germany; (E.-M.W.); (U.W.); (F.Z.); (P.R.); (J.A.V.)
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11
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Jayaraman P, Rajagopal M, Paranjpe I, Liharska L, Suarez-Farinas M, Thompson R, Del Valle DM, Beckmann N, Oh W, Gulamali FF, Kauffman J, Gonzalez-Kozlova E, Dellepiane S, Vasquez-Rios G, Vaid A, Jiang J, Chen A, Sakhuja A, Chen S, Kenigsberg E, He JC, Coca SG, Chan L, Schadt E, Merad M, Kim-Schulze S, Gnjatic S, Tsalik E, Langley R, Charney AW, Nadkarni GN. Peripheral Transcriptomics in Acute and Long-Term Kidney Dysfunction in SARS-CoV2 Infection. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.10.25.23297469. [PMID: 37961671 PMCID: PMC10635190 DOI: 10.1101/2023.10.25.23297469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Background Acute kidney injury (AKI) is common in hospitalized patients with SARS-CoV2 infection despite vaccination and leads to long-term kidney dysfunction. However, peripheral blood molecular signatures in AKI from COVID-19 and their association with long-term kidney dysfunction are yet unexplored. Methods In patients hospitalized with SARS-CoV2, we performed bulk RNA sequencing using peripheral blood mononuclear cells(PBMCs). We applied linear models accounting for technical and biological variability on RNA-Seq data accounting for false discovery rate (FDR) and compared functional enrichment and pathway results to a historical sepsis-AKI cohort. Finally, we evaluated the association of these signatures with long-term trends in kidney function. Results Of 283 patients, 106 had AKI. After adjustment for sex, age, mechanical ventilation, and chronic kidney disease (CKD), we identified 2635 significant differential gene expressions at FDR<0.05. Top canonical pathways were EIF2 signaling, oxidative phosphorylation, mTOR signaling, and Th17 signaling, indicating mitochondrial dysfunction and endoplasmic reticulum (ER) stress. Comparison with sepsis associated AKI showed considerable overlap of key pathways (48.14%). Using follow-up estimated glomerular filtration rate (eGFR) measurements from 115 patients, we identified 164/2635 (6.2%) of the significantly differentiated genes associated with overall decrease in long-term kidney function. The strongest associations were 'autophagy', 'renal impairment via fibrosis', and 'cardiac structure and function'. Conclusions We show that AKI in SARS-CoV2 is a multifactorial process with mitochondrial dysfunction driven by ER stress whereas long-term kidney function decline is associated with cardiac structure and function and immune dysregulation. Functional overlap with sepsis-AKI also highlights common signatures, indicating generalizability in therapeutic approaches. SIGNIFICANCE STATEMENT Peripheral transcriptomic findings in acute and long-term kidney dysfunction after hospitalization for SARS-CoV2 infection are unclear. We evaluated peripheral blood molecular signatures in AKI from COVID-19 (COVID-AKI) and their association with long-term kidney dysfunction using the largest hospitalized cohort with transcriptomic data. Analysis of 283 hospitalized patients of whom 37% had AKI, highlighted the contribution of mitochondrial dysfunction driven by endoplasmic reticulum stress in the acute stages. Subsequently, long-term kidney function decline exhibits significant associations with markers of cardiac structure and function and immune mediated dysregulation. There were similar biomolecular signatures in other inflammatory states, such as sepsis. This enhances the potential for repurposing and generalizability in therapeutic approaches.
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12
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Osataphan N, Phrommintikul A, Leemasawat K, Somwangprasert A, Apaijai N, Suksai S, Sirikul W, Gunaparn S, Chattipakorn SC, Chattipakorn N. Effects of metformin and donepezil on the prevention of doxorubicin-induced cardiotoxicity in breast cancer: a randomized controlled trial. Sci Rep 2023; 13:12759. [PMID: 37550350 PMCID: PMC10406870 DOI: 10.1038/s41598-023-40061-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 08/03/2023] [Indexed: 08/09/2023] Open
Abstract
Doxorubicin (DOX) causes deleterious cardiotoxicity. We aimed to investigate the protective roles of metformin and donepezil against DOX-induced cardiotoxicity. In this randomized-controlled trial, 143 female breast cancer patients were enrolled. Metformin (n = 43), donepezil (n = 52), or placebo (n = 48) were prescribed during DOX treatment. The primary endpoint was a proportion of patients with high sensitivity troponin-I (hsTnI) more than the 99th percentile value (> 15.6 ng/L) after DOX treatment. The secondary outcomes were the changes in the hsTnI, N-terminal pro-B-type natriuretic peptide (NT-proBNP), left ventricular ejection fraction (LVEF), global longitudinal strain (GLS) and peripheral blood mononuclear cells analysis for mitochondrial respiration. Baseline characteristics were similar between the groups. The primary endpoint occurred in 58.54% of metformin group, 76.92% in donepezil group, and 69.77% in placebo group (p = 0.215). The level of hsTnI increased after receiving DOX with subsequent decline in LVEF and GLS. Metformin and donepezil did not attenuate hsTnI elevation, LVEF or GLS reduction. There was no significant change in NT-proBNP level. Mitochondrial respiratory dysfunction was observed in the placebo and donepezil groups. However, metformin preserved mitochondrial respiration during DOX therapy. In conclusion, co-treatment with metformin or donepezil did not prevent myocardial injury. Metformin had a favorable mitochondrial outcome and warranted future studies.
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Affiliation(s)
- Nichanan Osataphan
- Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Arintaya Phrommintikul
- Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Krit Leemasawat
- Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | | | - Nattayaporn Apaijai
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Supanai Suksai
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Wachiranun Sirikul
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriluck Gunaparn
- Division of Cardiology, Department of Internal Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
- Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand.
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
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13
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Alfatni A, Charles AL, Sauer F, Riou M, Goupilleau F, Talha S, Meyer A, Andres E, Kindo M, Mazzucotelli JP, Epailly E, Geny B. Peripheral Blood Mononuclear Cells Mitochondrial Respiration and Superoxide Anion after Heart Transplantation. J Clin Med 2022; 11:jcm11237247. [PMID: 36498821 PMCID: PMC9735976 DOI: 10.3390/jcm11237247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/28/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
INTRODUCTION The mitochondrial function of circulating peripheral blood mononuclear cells (PBMCs) is an interesting new approach to cardiac diseases. Thus, PBMC's mitochondrial respiration decreases in relation to heart failure severity. However, no data are available on heart-transplanted patients (Htx). POPULATION AND METHODS We determined PBMCs mitochondrial respiration by high-resolution respirometry (Oroboros Instruments) and superoxide anion production using electron paramagnetic resonance (Bruker-Biospin) in 20 healthy subjects and 20 matched Htx and investigated clinical, biological, echocardiographic, coronarography and biopsy characteristics. RESULTS PBMCs mitochondrial respiratory chain complex II respiration was decreased in Htx (4.69 ± 0.84 vs. 7.69 ± 1.00 pmol/s/million cell in controls and Htx patients, respectively; p = 0.007) and complex IV respiration was increased (24.58 ± 2.57 vs. 15.68 ± 1.67 pmol/s/million cell; p = 0.0035). Superoxide anion production was also increased in Htx (1.47 ± 0.10 vs. 1.15 ± 0.10 µmol/min; p = 0.041). The leucocyte-to-lymphocyte ratio was increased in Htx, whom complex II correlated with leucocyte number (r = 0.51, p = 0.02) and with the left ventricular posterior wall peak early diastolic myocardial velocity (r = -0.62, p = 0.005). Complex IV was increased in the two patients with acute rejection and correlated negatively with Htx's isovolumetric relation time (r = -0.45, p = 0.045). DISCUSSION Although presenting with normal systolic function, Htx demonstrated abnormal PBMC's mitochondrial respiration. Unlike immunosuppressive therapies, subclinical diastolic dysfunction might be involved in these changes. Additionally, lymphopenia might reduce complex II, and acute rejection enhances complex IV respirations. CONCLUSION PBMC's mitochondrial respiration appears modified in Htx, potentially linked to cellular shift, mild diastolic dysfunction and/or acute rejection.
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Affiliation(s)
- Abrar Alfatni
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
| | - Anne-Laure Charles
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
| | - François Sauer
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
- Physiology and Functional Exploration Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Marianne Riou
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
- Physiology and Functional Exploration Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Fabienne Goupilleau
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
| | - Samy Talha
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
- Physiology and Functional Exploration Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Alain Meyer
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
- Physiology and Functional Exploration Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Emmanuel Andres
- Department of Internal Medicine, University Hospital of Strasbourg, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Michel Kindo
- Cardiovascular Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Jean-Philippe Mazzucotelli
- Cardiovascular Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Eric Epailly
- Cardiovascular Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
| | - Bernard Geny
- Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, University of Strasbourg, 11 Rue Humann, 67000 Strasbourg, France
- Physiology and Functional Exploration Service, University Hospital of Strasbourg, NHC, 1 Place de l’Hôpital, CEDEX, 67091 Strasbourg, France
- Correspondence:
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14
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Canet F, Díaz-Pozo P, Luna-Marco C, Fernandez-Reyes M, Vezza T, Marti M, Salazar J, Roldan I, Morillas C, Rovira-Llopis S, Rocha M, Víctor V. Mitochondrial redox impairment and enhanced autophagy in peripheral blood mononuclear cells from type 1 diabetic patients. Redox Biol 2022; 58:102551. [PMID: 36455476 PMCID: PMC9713367 DOI: 10.1016/j.redox.2022.102551] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/25/2022] Open
Abstract
Type 1 diabetes (T1D) involves critical metabolic disturbances that contribute to an increased cardiovascular risk. Leukocytes are key players in the onset of atherosclerosis due to their interaction with the endothelium. However, whether mitochondrial redox impairment, altered bioenergetics and abnormal autophagy in leukocytes contribute to T1D physiopathology is unclear. In this study we aimed to evaluate the bioenergetic and redox state of peripheral blood mononuclear cells (PBMCs) from T1D patients in comparison to those from healthy subjects, and to assess autophagy induction and leukocyte-endothelial interactions. T1D patients presented lower levels of fast-acting and total antioxidants in their blood, and their leukocytes produced higher amounts of total reactive oxygen species (ROS) and superoxide radical with respect to controls. Basal and ATP-linked respiration were similar in PBMCs from T1D and controls, but T1D PBMCs exhibited reduced spare respiratory capacity and a tendency toward decreased maximal respiration and reduced non-mitochondrial respiration, compared to controls. The autophagy markers P-AMPK, Beclin-1 and LC3-II/LC3-I were increased, while P62 and NBR1 were decreased in T1D PBMCs versus those from controls. Leukocytes from T1D patients displayed lower rolling velocity, higher rolling flux and more adhesion to the endothelium versus controls. Our findings show that T1D impairs mitochondrial function and promotes oxidative stress and autophagy in leukocytes, and suggest that these mechanisms contribute to an increased risk of atherosclerosis by augmenting leukocyte-endothelial interactions.
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Affiliation(s)
- F. Canet
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - P. Díaz-Pozo
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - C. Luna-Marco
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - M. Fernandez-Reyes
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - T. Vezza
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - M. Marti
- CIBERehd - Department of Pharmacology, University of Valencia, Valencia, Spain,Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - J.D. Salazar
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - I. Roldan
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - C. Morillas
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain
| | - S. Rovira-Llopis
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain,Department of Physiology, School of Medicine, University of Valencia and Institute of Health Research INCLIVA, Valencia, Spain,Corresponding author. Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain.
| | - M. Rocha
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain,CIBERehd - Department of Pharmacology, University of Valencia, Valencia, Spain,Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain,Corresponding author. Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain.
| | - V.M. Víctor
- Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain,CIBERehd - Department of Pharmacology, University of Valencia, Valencia, Spain,Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain,Department of Physiology, School of Medicine, University of Valencia and Institute of Health Research INCLIVA, Valencia, Spain,Corresponding author. Service of Endocrinology and Nutrition, University Hospital Doctor Peset, Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain.
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15
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Greenwood JC, Talebi FM, Jang DH, Spelde AE, Kilbaugh TJ, Shofer FS, Acker MA, Augoustides JGT, Bakker J, Meyer NJ, Brenner JS, Muzykantov VR, Abella BS. Protocol for the MicroRESUS study: The impact of circulatory shock and resuscitation on microcirculatory function and mitochondrial respiration after cardiovascular surgery. PLoS One 2022; 17:e0273349. [PMID: 36018848 PMCID: PMC9417024 DOI: 10.1371/journal.pone.0273349] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 08/05/2022] [Indexed: 11/26/2022] Open
Abstract
Background Despite current resuscitation strategies, circulatory shock and organ injury after cardiac surgery occur in 25–40% of patients. Goal-directed resuscitation after cardiac surgery has generated significant interest, but clinical practice to normalize hemodynamic variables including mean arterial pressure, cardiac filling pressures, and cardiac output may not reverse microcirculation abnormalities and do not address cellular dysoxia. Recent advances in technology have made it possible to measure critical components of oxygen delivery and oxygen utilization systems in live human tissues and blood cells. The MicroRESUS study will be the first study to measure microcirculatory and mitochondrial function in patients with circulatory shock and link these findings with clinical outcomes. Methods and analysis This will be a prospective, observational study that includes patients undergoing elective cardiovascular surgery with cardiopulmonary bypass (CPB). Microcirculation will be quantified with sublingual incident dark field videomicroscopy. Mitochondrial respiration will be measured by performing a substrate–uncoupler–inhibitor titration protocol with high resolution respirometry on peripheral blood mononuclear cells at baseline and serial timepoints during resuscitation and at recovery as a possible liquid biomarker. Plasma samples will be preserved for future analysis to examine endothelial injury and other mechanisms of microcirculatory dysfunction. Thirty-day ventilator and vasopressor-free days (VVFDs) will be measured as a primary outcome, along with sequential organ failure assessment scores, and other clinical parameters to determine if changes in microcirculation and mitochondrial respiration are more strongly associated with clinical outcomes compared to traditional resuscitation targets. Discussion This will be the first prospective study to examine both microcirculatory and mitochondrial function in human patients with circulatory shock undergoing cardiac bypass and address a key mechanistic knowledge gap in the cardiovascular literature. The results of this study will direct future research efforts and therapeutic development for patients with shock.
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Affiliation(s)
- John C. Greenwood
- Division of Critical Care Medicine, Department of Emergency Medicine, Department of Anesthesiology and Critical Care, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
- * E-mail:
| | - Fatima M. Talebi
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
| | - David H. Jang
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Audrey E. Spelde
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Todd J. Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Center for Mitochondrial and Epigenomic Medicine, The Children’s Hospital of Philadelphia, Philadelphia, PA, United States of America
| | - Frances S. Shofer
- Department of Epidemiology & Biostatistics, Department of Emergency Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Michael A. Acker
- Division of Cardiovascular Surgery, Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
| | - John G. T. Augoustides
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
| | - Jan Bakker
- Division of Pulmonary, Allergy, and Critical Care Medicine, New York University, New York, NY, United States of America
| | - Nuala J. Meyer
- Division of Pulmonary and Critical Care, Department of Medicine, Perelman School of Medicine, Philadelphia, PA, United States of America
| | - Jacob S. Brenner
- Division of Pulmonary and Critical Care, Department of Medicine, Perelman School of Medicine, Philadelphia, PA, United States of America
| | - Vladimir R. Muzykantov
- Department of Pharmacology, University of Pennsylvania, Philadelphia, PA, United States of America
| | - Benjamin S. Abella
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States of America
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Chen F, Sun J, Chen C, Zhang Y, Zou L, Zhang Z, Chen M, Wu H, Tian W, Liu Y, Xu Y, Luo H, Zhu M, Yu J, Wang Q, Wang K. Quercetin Mitigates Methamphetamine-Induced Anxiety-Like Behavior Through Ameliorating Mitochondrial Dysfunction and Neuroinflammation. Front Mol Neurosci 2022; 15:829886. [PMID: 35295707 PMCID: PMC8919775 DOI: 10.3389/fnmol.2022.829886] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/19/2022] [Indexed: 11/13/2022] Open
Abstract
Methamphetamine (MA) abuse results in neurotoxic outcomes, including increased anxiety and depression. Studies have reported an association between MA exposure and anxiety, nonetheless, the underlying mechanism remains elusive. In the present study, we developed a mouse model of anxiety-like behavior induced by MA administration. RNA-seq was then performed to profile the gene expression patterns of hippocampus (HIPP), and the differentially expressed genes (DEGs) were significantly enriched in signaling pathways related to psychiatric disorders and mitochondrial function. Based on these, mitochondria was hypothesized to be involved in MA-induced anxiety. Quercetin, as a mitochondrial protector, was used to investigate whether to be a potential treatment for MA-induced anxiety; accordingly, it alleviated anxiety-like behavior and improved mitochondrial impairment in vivo. Further experiments in vitro suggested that quercetin alleviated the dysfunction and morphological abnormalities of mitochondria induced by MA, via decreasing the levels of reactive oxygen species (ROS), mitochondrial membrane potential (MMP), and increasing the oxygen consumption rate (OCR) and ATP production. Moreover, the study examined the effect of quercetin on astrocytes activation and neuroinflammation, and the results indicated that it significantly attenuated the activation of astrocytes and reduced the levels of IL-1β, TNFα but not IL-6. In light of these findings, quantitative evidence is presented in the study supporting the view that MA can evoke anxiety-like behavior via the induction of mitochondrial dysfunction. Quercetin exerted antipsychotic activity through modulation of mitochondrial function and neuroinflammation, suggesting its potential for further therapeutic development in MA-induced anxiety.
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Affiliation(s)
- Fengrong Chen
- School of Medicine, Kunming University of Science and Technology, Kunming, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
| | - Jiaxue Sun
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Yunnan Institute of Digestive Disease, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Cheng Chen
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Yunnan Institute of Digestive Disease, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yongjin Zhang
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Center for Experimental Studies and Research, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lei Zou
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Department of Organ Transplant, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Zunyue Zhang
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Yunnan University, Kunming, China
| | - Minghui Chen
- School of Medicine, Kunming University of Science and Technology, Kunming, China
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
| | - Hongjin Wu
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
| | - Weiwei Tian
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
| | - Yu Liu
- The School of Foreign Languages, University of Shanghai for Science and Technology, Shanghai, China
| | - Yu Xu
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Yunnan Institute of Digestive Disease, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Huayou Luo
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Yunnan Institute of Digestive Disease, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Mei Zhu
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
| | - Juehua Yu
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Center for Experimental Studies and Research, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qian Wang
- Tianhua College, Shanghai Normal University, Shanghai, China
| | - Kunhua Wang
- NHC Key Laboratory of Drug Addiction Medicine, Kunming Medical University, Kunming, China
- Yunnan University, Kunming, China
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17
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Li T, Wang W, Gan W, Lv S, Zeng Z, Hou Y, Yan Z, Zhang R, Yang M. Comprehensive bioinformatics analysis identifies LAPTM5 as a potential blood biomarker for hypertensive patients with left ventricular hypertrophy. Aging (Albany NY) 2022; 14:1508-1528. [PMID: 35157609 PMCID: PMC8876903 DOI: 10.18632/aging.203894] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 12/11/2021] [Indexed: 11/29/2022]
Abstract
Left ventricular hypertrophy (LVH) is a pivotal manifestation of hypertensive organ damage associated with an increased cardiovascular risk. However, early diagnostic biomarkers for assessing LVH in patients with hypertension (HT) remain indefinite. Here, multiple bioinformatics tools combined with an experimental verification strategy were used to identify blood biomarkers for hypertensive LVH. GSE74144 mRNA expression profiles were downloaded from the Gene Expression Omnibus (GEO) database to screen candidate biomarkers, which were used to perform weighted gene co-expression network analysis (WGCNA) and establish the least absolute shrinkage and selection operator (LASSO) regression model, combined with support vector machine-recursive feature elimination (SVM-RFE) algorithms. Finally, the potential blood biomarkers were verified in an animal model. A total of 142 hub genes in peripheral blood leukocytes were identified between HT with LVH and HT without LVH, which were mainly involved in the ATP metabolic process, oxidative phosphorylation, and mitochondrial structure and function. Notably, lysosomal associated transmembrane protein 5 (LAPTM5) was identified as the potential diagnostic marker of hypertensive LVH, which showed strong correlations with diverse marker sets of reactive oxygen species (ROS) and autophagy. RT-PCR validation of blood samples and cardiac magnetic resonance imaging (CMRI) showed that the expression of LAPTM5 was significantly higher in the HT with LVH model than in normal controls, LAPTM5 demonstrated a positive association with the left ventricle wall thickness as well as electrocardiogram (ECG) parameters widths of the QRS complex and QTc interval. In conclusion, LAPTM5 may be a potential biomarker for the diagnosis of LVH in patients with HT, and it can provide new insights for future studies on the occurrence and the molecular mechanisms of hypertensive LVH.
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Affiliation(s)
- Tiegang Li
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Weiqi Wang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Wenqiang Gan
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Silin Lv
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zifan Zeng
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Yufang Hou
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Zheng Yan
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Rixin Zhang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
| | - Min Yang
- State Key Laboratory of Bioactive Substances and Function of Natural Medicine, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
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18
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Janssen JJE, Lagerwaard B, Porbahaie M, Nieuwenhuizen AG, Savelkoul HFJ, van Neerven RJJ, Keijer J, de Boer VCJ. Extracellular flux analyses reveal differences in mitochondrial PBMC metabolism between high-fit and low-fit females. Am J Physiol Endocrinol Metab 2022; 322:E141-E153. [PMID: 35001658 PMCID: PMC8897018 DOI: 10.1152/ajpendo.00365.2021] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Analyzing metabolism of peripheral blood mononuclear cells (PBMCs) can possibly serve as a cellular metabolic read-out for lifestyle factors and lifestyle interventions. However, the impact of PBMC composition on PBMC metabolism is not yet clear, neither is the differential impact of a longer-term lifestyle factor versus a short-term lifestyle intervention. We investigated the effect of aerobic fitness level and a recent exercise bout on PBMC metabolism in females. PBMCs from 31 young female adults divided into a high-fit (V̇o2peak ≥ 47 mL/kg/min, n = 15) and low-fit (V̇o2peak ≤ 37 mL/kg/min, n = 16) groups were isolated at baseline and overnight after a single bout of exercise (60 min, 70% V̇o2peak). Oxygen consumption rate (OCR) and glycolytic rate (GR) were measured using extracellular flux (XF) assays and PBMC subsets were characterized using fluorescence-activated cell sorting (FACS). Basal OCR, FCCP-induced OCR, spare respiratory capacity, ATP-linked OCR, and proton leak were significantly higher in high-fit than in low-fit females (all P < 0.01), whereas no significant differences in glycolytic rate (GR) were found (all P > 0.05). A recent exercise bout did not significantly affect GR or OCR parameters (all P > 0.05). The overall PBMC composition was similar between high-fit and low-fit females. Mitochondrial PBMC function was significantly higher in PBMCs from high-fit than from low-fit females, which was unrelated to PBMC composition and not impacted by a recent bout of exercise. Our study reveals a link between PBMC metabolism and levels of aerobic fitness, increasing the relevance of PBMC metabolism as a marker to study the impact of lifestyle factors on human health.NEW & NOTEWORTHY Mitochondrial metabolism was significantly higher in PBMCs from high-fit than from low-fit females. This was unrelated to PBMC composition and not impacted by a recent bout of exercise. Our study reveals a link between PBMC metabolism and levels of aerobic fitness, increasing the relevance of PBMC metabolism as a marker to study the impact of lifestyle factors on human health.
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Affiliation(s)
- Joëlle J E Janssen
- Human and Animal Physiology, Wageningen University and Research, Wageningen, The Netherlands
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, The Netherlands
| | - Bart Lagerwaard
- Human and Animal Physiology, Wageningen University and Research, Wageningen, The Netherlands
- TI Food and Nutrition, Wageningen, The Netherlands
| | - Mojtaba Porbahaie
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, The Netherlands
| | - Arie G Nieuwenhuizen
- Human and Animal Physiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Huub F J Savelkoul
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, The Netherlands
| | - R J Joost van Neerven
- Cell Biology and Immunology, Wageningen University and Research, Wageningen, The Netherlands
| | - Jaap Keijer
- Human and Animal Physiology, Wageningen University and Research, Wageningen, The Netherlands
| | - Vincent C J de Boer
- Human and Animal Physiology, Wageningen University and Research, Wageningen, The Netherlands
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19
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Sauer F, Riou M, Charles AL, Meyer A, Andres E, Geny B, Talha S. Pathophysiology of Heart Failure: A Role for Peripheral Blood Mononuclear Cells Mitochondrial Dysfunction? J Clin Med 2022; 11:jcm11030741. [PMID: 35160190 PMCID: PMC8836880 DOI: 10.3390/jcm11030741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/24/2022] [Accepted: 01/27/2022] [Indexed: 02/06/2023] Open
Abstract
Heart failure (HF) is a leading cause of hospitalization in patients aged more than 65 years and is associated with high mortality rates. A better comprehension of its physiopathology is still needed, and, in addition to neurohormonal systems and sodium glucose co-transporter 2 modulations, recent studies focus on the mitochondrial respiration of peripheral blood circulating cells (PBMCs). Thus, cardiovascular metabolic risk factors and cellular switch with an increased neutrophil/lymphocytes ratio might favor the decreased PBMC mitochondrial respiration observed in relation with HF severity. PBMCs are implicated in the immune system function and mitochondrial dysfunction of PBMC, potentially induced by their passage through a damaged heart and by circulating mitoDAMPs, which can lead to a vicious circle, thus sustaining negative cardiac remodeling during HF. This new approach of HF complex pathophysiology appears to be a promising field of research, and further studies on acute and chronic HF with reduced or preserved LVEF are warranted to better understand whether circulating PBMC mitochondrial function and mitoDAMPs follow-ups in HF patients might show diagnosis, prognosis or therapeutic usefulness.
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Affiliation(s)
- François Sauer
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- University Hospital of Strasbourg, Physiology and Functional Exploration Service, 1 Place de l’Hôpital, 67091 Strasbourg, France
| | - Marianne Riou
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- University Hospital of Strasbourg, Physiology and Functional Exploration Service, 1 Place de l’Hôpital, 67091 Strasbourg, France
| | - Anne-Laure Charles
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- University Hospital of Strasbourg, Physiology and Functional Exploration Service, 1 Place de l’Hôpital, 67091 Strasbourg, France
| | - Alain Meyer
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- University Hospital of Strasbourg, Physiology and Functional Exploration Service, 1 Place de l’Hôpital, 67091 Strasbourg, France
| | - Emmanuel Andres
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- Internal Medicine, Diabete and Metabolic Diseases Service, University Hospital of Strasbourg, 1 Place de l’Hôpital, 67091 Strasbourg, France
| | - Bernard Geny
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- University Hospital of Strasbourg, Physiology and Functional Exploration Service, 1 Place de l’Hôpital, 67091 Strasbourg, France
- Correspondence:
| | - Samy Talha
- University of Strasbourg, Translational Medicine Federation of Strasbourg (FMTS), Faculty of Medicine, Team 3072 “Mitochondria, Oxidative Stress and Muscle Protection”, 11 rue Humann, 67000 Strasbourg, France; (F.S.); (M.R.); (A.-L.C.); (A.M.); (E.A.); (S.T.)
- University Hospital of Strasbourg, Physiology and Functional Exploration Service, 1 Place de l’Hôpital, 67091 Strasbourg, France
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20
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Xu X, Lin JHI, Bais AS, Reynolds MJ, Tan T, Gabriel GC, Kondos Z, Liu X, Shiva SS, Lo CW. Mitochondrial Respiration Defects in Single-Ventricle Congenital Heart Disease. Front Cardiovasc Med 2021; 8:734388. [PMID: 34631832 PMCID: PMC8494974 DOI: 10.3389/fcvm.2021.734388] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 08/16/2021] [Indexed: 02/04/2023] Open
Abstract
Background: Congenital heart disease (CHD) with single-ventricle (SV) physiology is now survivable with a three-stage surgical course ending with Fontan palliation. However, 10-year transplant-free survival remains at 39–50%, with ventricular dysfunction progressing to heart failure (HF) being a common sequela. For SV-CHD patients who develop HF, undergoing the surgical course would not be helpful and could even be detrimental. As HF risk cannot be predicted and metabolic defects have been observed in Ohia SV-CHD mice, we hypothesized that respiratory defects in peripheral blood mononuclear cells (PBMCs) may allow HF risk stratification in SV-CHD. Methods: SV-CHD (n = 20), biventricular CHD (BV-CHD; n = 16), or healthy control subjects (n = 22) were recruited, and PBMC oxygen consumption rate (OCR) was measured using the Seahorse Analyzer. Respiration was similarly measured in Ohia mouse heart tissue. Results: Post-Fontan SV-CHD patients with HF showed higher maximal respiratory capacity (p = 0.004) and respiratory reserve (p < 0.0001), parameters important for cell stress adaptation, while the opposite was found for those without HF (reserve p = 0.037; maximal p = 0.05). This was observed in comparison to BV-CHD or healthy controls. However, respiration did not differ between SV patients pre- and post-Fontan or between pre- or post-Fontan SV-CHD patients and BV-CHD. Reminiscent of these findings, heart tissue from Ohia mice with SV-CHD also showed higher OCR, while those without CHD showed lower OCR. Conclusion: Elevated mitochondrial respiration in PBMCs is correlated with HF in post-Fontan SV-CHD, suggesting that PBMC respiration may have utility for prognosticating HF risk in SV-CHD. Whether elevated respiration may reflect maladaptation to altered hemodynamics in SV-CHD warrants further investigation.
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Affiliation(s)
- Xinxiu Xu
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Jiuann-Huey Ivy Lin
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Critical Care Medicine, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Abha S Bais
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Michael John Reynolds
- School of Medicine, Pittsburgh Heart, Lung, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Tuantuan Tan
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - George C Gabriel
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Zoie Kondos
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Xiaoqin Liu
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Sruti S Shiva
- School of Medicine, Pittsburgh Heart, Lung, Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, PA, United States.,Department of Pharmacology and Chemical Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Cecilia W Lo
- Department of Developmental Biology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
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21
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Liepinsh E, Makarova E, Plakane L, Konrade I, Liepins K, Videja M, Sevostjanovs E, Grinberga S, Makrecka-Kuka M, Dambrova M. Low-intensity exercise stimulates bioenergetics and increases fat oxidation in mitochondria of blood mononuclear cells from sedentary adults. Physiol Rep 2021; 8:e14489. [PMID: 32562386 PMCID: PMC7305243 DOI: 10.14814/phy2.14489] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 05/21/2020] [Accepted: 05/21/2020] [Indexed: 12/19/2022] Open
Abstract
AIM Exercise training induces adaptations in muscle and other tissue mitochondrial metabolism, dynamics, and oxidative phosphorylation capacity. Mitochondrial fatty acid oxidation was shown to be pivotal for the anti-inflammatory status of immune cells. We hypothesize that exercise training can exert effects influence mitochondrial fatty acid metabolism in peripheral blood mononuclear cells (PBMCs). The aim was to investigate the effect of exercise on the fatty acid oxidation-dependent respiration in PBMCs. DESIGN Twelve fasted or fed volunteers first performed incremental-load exercise tests to exhaustion on a cycle ergometer to determine the optimal workload ensuring maximal health benefits in volunteers with a sedentary lifestyle. In addition, the same volunteers performed 60 min of low-intensity constant-load exercise. RESULTS In the incremental-load exercise, the maximal whole-body fat oxidation rate measured by indirect calorimetry was reached at the fasted state already at a 50 W workload. At the 75-175 W workloads, the contribution of fat oxidation significantly decreased to only 11%, the heart rate increased to 185 BPM, and the study participants reached exhaustion. These results show that low-intensity exercise (50W) is optimal for maximal whole-body fat utilization. After low-intensity exercise, the ROUTINE mitochondrial respiration, as well as fatty acid oxidation-dependent respiration in PBMCs at LEAK and OXPHOS states, were significantly increased by 31%, 65%, and 76%, respectively. In addition, during 60 min of low-intensity (50W) exercise, a 2-fold higher lipolysis rate was observed and 13.5 ± 0.9 g of fat was metabolized, which was 57% more than the amount of fat that was metabolized during the incremental-load exercise. CONCLUSIONS In individuals with a sedentary lifestyle participating in a bicycle ergometry exercise program, maximal lipolysis and whole-body fat oxidation rate is reached in a fasted state during low-intensity exercise. For the first time, it was demonstrated that low-intensity exercise improves bioenergetics and increases fatty acid oxidation in PBMCs and may contribute to the anti-inflammatory phenotype.
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Affiliation(s)
| | | | | | | | | | - Melita Videja
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Riga Stradins University, Riga, Latvia
| | | | | | | | - Maija Dambrova
- Latvian Institute of Organic Synthesis, Riga, Latvia.,Riga Stradins University, Riga, Latvia
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22
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Pearson RC, Olenick AA, Shaker N, Blankenship MM, Tinius RA, Winchester LJ, Oregon E, Maples JM. High-fat meal increases peripheral blood mononuclear cell pro-inflammatory cytokine expression in African-American women. Appl Physiol Nutr Metab 2021; 46:661-668. [DOI: 10.1139/apnm-2020-0873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
African-American (AA) women have elevated predominance of inflammatory diseases concurrent with local inflammation resulting in compromised metabolic function. The purpose of the study was 2-fold: 1) to examine the gene and protein expression of pro- and anti-inflammatory cytokine secretion by peripheral blood mononuclear cells (PBMC) obtained from AA and Caucasian-American (CA) women in response to an acute high-fat meal; and 2) to explore the influence of race (AA vs. CA) on PBMC reactivity. Ten AA and 11 CA women consumed a high-fat meal with baseline and 4 h postprandial venous blood draws. PBMCs were incubated for 3 h then messenger RNA expression and supernatant protein concentration was used to examine inflammatory profiles. All women had a postprandial increase in interleukin (IL)-8 gene expression, IL-8 protein concentration, and tumor necrosis factor alpha (TNF-α) protein concentration (P < 0.05). AA women had a postprandial increase in IL-6, IL-8, and TNF-α protein concentration (P < 0.05). AA women had higher postprandial IL-1β protein concentration and IL-8 gene expression compared with CA women (P < 0.05). Our data uncovers the specific impact of race and time on pro-inflammatory PBMC (IL-1β, IL-6, IL-8, and TNF-α) expression profiles in response to an acute high-fat meal challenge. Novelty: African Americans have higher predominance of inflammatory disease. We explored the potential race impact on peripheral blood mononuclear cell reactivity in response to a meal. A pro-inflammatory response to an acute high-fat meal with race impact was observed possibly contributing to health disparities impacting African-American women.
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Affiliation(s)
- Regis C. Pearson
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Alyssa A. Olenick
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Nuha Shaker
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Maire M. Blankenship
- School of Nursing and Allied Health, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Rachel A. Tinius
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Lee J. Winchester
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Evie Oregon
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
| | - Jill M. Maples
- School of Kinesiology, Recreation, and Sport, Western Kentucky University, Bowling Green, KY 42101, USA
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23
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Janssen JJE, Lagerwaard B, Bunschoten A, Savelkoul HFJ, van Neerven RJJ, Keijer J, de Boer VCJ. Novel standardized method for extracellular flux analysis of oxidative and glycolytic metabolism in peripheral blood mononuclear cells. Sci Rep 2021; 11:1662. [PMID: 33462298 PMCID: PMC7814123 DOI: 10.1038/s41598-021-81217-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 12/22/2020] [Indexed: 01/29/2023] Open
Abstract
Analyzing metabolism of peripheral blood mononuclear cells (PBMCs) provides key opportunities to study the pathophysiology of several diseases, such as type 2 diabetes, obesity and cancer. Extracellular flux (XF) assays provide dynamic metabolic analysis of living cells that can capture ex vivo cellular metabolic responses to biological stressors. To obtain reliable data from PBMCs from individuals, novel methods are needed that allow for standardization and take into account the non-adherent and highly dynamic nature of PBMCs. We developed a novel method for extracellular flux analysis of PBMCs, where we combined brightfield imaging with metabolic flux analysis and data integration in R. Multiple buffy coat donors were used to demonstrate assay linearity with low levels of variation. Our method allowed for accurate and precise estimation of XF assay parameters by reducing the standard score and standard score interquartile range of PBMC basal oxygen consumption rate and glycolytic rate. We applied our method to freshly isolated PBMCs from sixteen healthy subjects and demonstrated that our method reduced the coefficient of variation in group mean basal oxygen consumption rate and basal glycolytic rate, thereby decreasing the variation between PBMC donors. Our novel brightfield image procedure is a robust, sensitive and practical normalization method to reliably measure, compare and extrapolate XF assay data using PBMCs, thereby increasing the relevance for PBMCs as marker tissue in future clinical and biological studies, and enabling the use of primary blood cells instead of immortalized cell lines for immunometabolic experiments.
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Affiliation(s)
- Joëlle J E Janssen
- Human and Animal Physiology, Department of Animal Sciences, Wageningen University and Research, De Elst 1 6708 WD, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
- Cell Biology and Immunology, Wageningen University and Research, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
| | - Bart Lagerwaard
- Human and Animal Physiology, Department of Animal Sciences, Wageningen University and Research, De Elst 1 6708 WD, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
- TI Food and Nutrition, P.O. Box 557, 6700 AN, Wageningen, The Netherlands
| | - Annelies Bunschoten
- Human and Animal Physiology, Department of Animal Sciences, Wageningen University and Research, De Elst 1 6708 WD, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
| | - Huub F J Savelkoul
- Cell Biology and Immunology, Wageningen University and Research, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
| | - R J Joost van Neerven
- Cell Biology and Immunology, Wageningen University and Research, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
| | - Jaap Keijer
- Human and Animal Physiology, Department of Animal Sciences, Wageningen University and Research, De Elst 1 6708 WD, P.O. Box 338, 6700 AH, Wageningen, The Netherlands
| | - Vincent C J de Boer
- Human and Animal Physiology, Department of Animal Sciences, Wageningen University and Research, De Elst 1 6708 WD, P.O. Box 338, 6700 AH, Wageningen, The Netherlands.
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24
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Zhang X, Zink F, Hezel F, Vogt J, Wachter U, Wepler M, Loconte M, Kranz C, Hellmann A, Mizaikoff B, Radermacher P, Hartmann C. Metabolic substrate utilization in stress-induced immune cells. Intensive Care Med Exp 2020; 8:28. [PMID: 33336295 PMCID: PMC7746792 DOI: 10.1186/s40635-020-00316-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Accepted: 06/11/2020] [Indexed: 12/21/2022] Open
Abstract
Immune cell activation leads to the acquisition of new functions, such as proliferation, chemotaxis, and cytokine production. These functional changes require continuous metabolic adaption in order to sustain ATP homeostasis for sufficient host defense. The bioenergetic demands are usually met by the interconnected metabolic pathways glycolysis, TCA cycle, and oxidative phosphorylation. Apart from glucose, other sources, such as fatty acids and glutamine, are able to fuel the TCA cycle.Rising evidence has shown that cellular metabolism has a direct effect on the regulation of immune cell functions. Thus, quiescent immune cells maintain a basal metabolic state, which shifts to an accelerated metabolic level upon immune cell activation in order to promote key effector functions.This review article summarizes distinct metabolic signatures of key immune cell subsets from quiescence to activation and demonstrates a methodical concept of how to assess cellular metabolic pathways. It further discusses why metabolic functions are of rising interest for translational research and how they can be affected by the underlying pathophysiological condition and/or therapeutic interventions.
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Affiliation(s)
- Xiaomin Zhang
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Fabian Zink
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Felix Hezel
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Josef Vogt
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Ulrich Wachter
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Martin Wepler
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
- Klinik für Anästhesiologie, Universitätsklinikum Ulm, Ulm, Germany
| | - Maurizio Loconte
- Anesthesia and Intensive Care, San Martino Policlinico Hospital, IRCCS for Oncolocy and Neuroscience, Genoa, Italy
| | - Christine Kranz
- Institut für Analytische und Bioanalytische Chemie, Universität Ulm, Ulm, Germany
| | - Andreas Hellmann
- Institut für Analytische und Bioanalytische Chemie, Universität Ulm, Ulm, Germany
| | - Boris Mizaikoff
- Institut für Analytische und Bioanalytische Chemie, Universität Ulm, Ulm, Germany
| | - Peter Radermacher
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
| | - Clair Hartmann
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum Ulm, Helmholzstraße 8/1, 89081 Ulm, Germany
- Klinik für Anästhesiologie, Universitätsklinikum Ulm, Ulm, Germany
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25
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Effects of Acute Subdural Hematoma-Induced Brain Injury On Energy Metabolism in Peripheral Blood Mononuclear Cells. Shock 2020; 55:407-417. [PMID: 32826816 DOI: 10.1097/shk.0000000000001642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT In activated immune cells, differentiation and function are determined by cell type-specific modifications of metabolic patterns. After traumatic brain injury both immune cell activation and suppression were reported. Therefore, we sought to explore immune cell energy metabolism in a long-term, resuscitated porcine model of acute subdural hematoma (ASDH)-induced acute brain injury devoid of impaired systemic hemodynamics and oxygen transport.Before and up to 50 h after induction of ASDH, peripheral blood mononuclear cells (PBMCs) were separated by density gradient centrifugation, and cell metabolism was analyzed using high-resolution respirometry for mitochondrial respiration and electron spin resonance for reactive oxygen species production. After incubation with stable isotope-labeled 1,2-13C2-glucose or 13C5-glutamine, distinct labeling patterns of intermediates of glycolysis or tricarboxylic acid (TCA) cycle and 13CO2 production were measured by gas chromatography-mass spectroscopy. Principal component analysis was followed by a varimax rotation on the covariance across all measured variables and all measured time points.After ASDH induction, average PBMC metabolic activity remained unaffected, possibly because strict adherence to intensive care unit guidelines limited trauma to ASDH induction without any change in parameters of systemic hemodynamics, oxygen transport, and whole-body metabolism. Despite decreased glycolytic activity fueling the TCA cycle, the principal component analysis indicated a cell type-specific activation pattern with biosynthetic and proliferative characteristics.
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Lehti M, Valkeinen H, Sipilä S, Perhonen M, Rottensteiner M, Pullinen T, Pietiläinen R, Nyman K, Vehkaoja A, Kainulainen H, Kujala UM. Effects of aerobic and strength training on aerobic capacity, muscle strength, and gene expression of lymphomonocytes in patients with stable CAD. Am J Transl Res 2020; 12:4582-4593. [PMID: 32913532 PMCID: PMC7476147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 06/19/2020] [Indexed: 06/11/2023]
Abstract
This study examined the effectiveness, suitability, and safety of a mixed interval-type aerobic and strength training program (MIAST) on physical fitness in patients with stable coronary artery disease (CAD) without history of myocardial infarction (MI). Twenty-three patients with stable CAD were randomly assigned to a MIAST (n = 12; mean age 58.6 years) or control (n = 11; 63.3 years) group. The MIAST group participated in the progressive training program twice a week for 21 weeks. Peak oxygen uptake (VO2peak), workload, and exercise time were measured as were maximal muscle strength, serum lipids, glucose concentration, and the cross-sectional area (CSA) of knee extensors. The safety and suitability of the program were assessed by wireless electrocardiogram (ECG) monitoring and exercise diaries. VO2peak (6.9%; P < 0.05) and exercise time (11.2%; P < 0.05) improved significantly after 12 weeks of training in the MIAST group compared to the control group. Muscle strength (19.9%; P < 0.05) and CSA (2.2%; P < 0.05) increased, and serum lipids and blood glucose tended to decrease after the training. The successful training program (increase in maximal oxygen uptake) increased the gene expression of oxygen metabolism and decreased the gene expression of inflammation pathways in lymphomonocytes. The MIAST program, including interval-type aerobic and strength training, was safe, did not cause any adverse effects, and led to significant improvements in physical fitness in patients with stable CAD.
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Affiliation(s)
- Maarit Lehti
- Faculty of Sport and Health Science, University of JyväskyläJyväskylä, Finland
- LIKES Research Centre for Physical Activity and HealthJyväskylä, Finland
| | - Heli Valkeinen
- Finnish Institute for Health and WelfareHelsinki, Finland
| | - Sarianna Sipilä
- Gerontology Research Center, Faculty of Sport and Health Sciences, University of JyväskyläJyväskylä, Finland
| | | | - Mirva Rottensteiner
- Faculty of Sport and Health Science, University of JyväskyläJyväskylä, Finland
- Department of Medicine, Central Finland Health Care DistrictJyväskylä, Finland
| | - Teemu Pullinen
- Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of JyväskyläJyväskylä, Finland
| | | | - Kai Nyman
- Central Hospital of Central FinlandJyväskylä, Finland
| | - Antti Vehkaoja
- Faculty of Medicine and Health Technology, Tampere UniversityTampere, Finland
| | - Heikki Kainulainen
- Neuromuscular Research Center, Faculty of Sport and Health Sciences, University of JyväskyläJyväskylä, Finland
| | - Urho M Kujala
- Faculty of Sport and Health Science, University of JyväskyläJyväskylä, Finland
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27
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DeConne TM, Muñoz ER, Sanjana F, Hobson JC, Martens CR. Cardiometabolic risk factors are associated with immune cell mitochondrial respiration in humans. Am J Physiol Heart Circ Physiol 2020; 319:H481-H487. [PMID: 32678706 DOI: 10.1152/ajpheart.00434.2020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Modifiable cardiometabolic risk factors induce the release of proinflammatory cytokines and reactive oxygen species from circulating peripheral blood mononuclear cells (PBMCs), resulting in increased cardiovascular disease risk and compromised immune health. These changes may be driven by metabolic reprogramming of PBMCs, resulting in reduced mitochondrial respiration; however, this has not been fully tested. We aimed to determine the independent associations between cardiometabolic risk factors including BMI, blood pressure, fasting glucose, and plasma lipids with mitochondrial respiration in PBMCs isolated from generally healthy individuals (n = 21) across the adult lifespan (12 men/9 women; age, 56 ± 21 yr; age range, 22-78 yr; body mass index, 27.9 ± 5.7 kg/m2; blood pressure, 123 ± 16/72 ± 10 mmHg; glucose, 90 ± 14 mg/dL; low-density lipoprotein cholesterol (LDL-C), 111 ± 22 mg/dL; and high-density lipoprotein cholesterol (HDL-C), 62 ± 16 mg/dL). PBMCs were isolated from whole blood by density-dependent centrifugation and used to assess mitochondrial function by respirometry. Primary outcomes included basal and maximal oxygen consumption rate (OCR), which were subsequently used to determine spare respiratory capacity and OCR metabolic potential. After we corrected for systolic blood pressure (SBP), diastolic blood pressure (DBP), and blood glucose, LDL-C was negatively associated with maximal respiration (r = -0.56, P = 0.016), spare respiratory capacity (r = -0.58, P = 0.012), and OCR metabolic potential (r = -0.71, P = 0.0011). In addition, SBP was negatively associated with OCR metabolic potential (r = -0.62, P = 0.0056) after we corrected for DBP, blood glucose, and LDL-C. These data suggest a link between blood cholesterol, SBP, and mitochondrial health that may provide insight into how cardiometabolic risk factors contribute to impaired immune cell function.NEW & NOTEWORTHY Independent of other cardiometabolic risk factors, low-density lipoprotein cholesterol, and systolic blood pressure were found to be negatively associated with several parameters of mitochondrial respiration in peripheral blood mononuclear cells of healthy adults. These data suggest that low-density lipoprotein cholesterol and systolic blood pressure may induce metabolic reprogramming of immune cells, contributing to increased cardiovascular disease risk and impaired immune health.
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Affiliation(s)
- Theodore M DeConne
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware
| | - Eric R Muñoz
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware
| | - Faria Sanjana
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware
| | - Joshua C Hobson
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware
| | - Christopher R Martens
- Department of Kinesiology and Applied Physiology, University of Delaware, Newark, Delaware
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28
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New Insights into the Implication of Mitochondrial Dysfunction in Tissue, Peripheral Blood Mononuclear Cells, and Platelets during Lung Diseases. J Clin Med 2020; 9:jcm9051253. [PMID: 32357474 PMCID: PMC7287602 DOI: 10.3390/jcm9051253] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Revised: 04/16/2020] [Accepted: 04/20/2020] [Indexed: 12/13/2022] Open
Abstract
Lung diseases such as chronic obstructive pulmonary disease, asthma, pulmonary arterial hypertension, or idiopathic pulmonary fibrosis are major causes of morbidity and mortality. Complex, their physiopathology is multifactorial and includes lung mitochondrial dysfunction and enhanced reactive oxygen species (ROS) release, which deserves increased attention. Further, and importantly, circulating blood cells (peripheral blood mononuclear cells-(PBMCs) and platelets) likely participate in these systemic diseases. This review presents the data published so far and shows that circulating blood cells mitochondrial oxidative capacity are likely to be reduced in chronic obstructive pulmonary disease (COPD), but enhanced in asthma and pulmonary arterial hypertension in a context of increased oxidative stress. Besides such PBMCs or platelets bioenergetics modifications, mitochondrial DNA (mtDNA) changes have also been observed in patients. These new insights open exciting challenges to determine their role as biomarkers or potential guide to a new therapeutic approach in lung diseases.
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29
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Lee HK. Fatty acid overload to compromised oxidative phosphorylation activates inflammation in type 2 diabetes: Hidden beasts and how to find them. J Diabetes Investig 2020; 11:290-293. [PMID: 31677342 PMCID: PMC7078090 DOI: 10.1111/jdi.13172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 01/18/2023] Open
Affiliation(s)
- Hong Kyu Lee
- Department of Internal MedicineEulji General HospitalNowon‐GuKorea
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30
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Hu Y, Xia W, Li Y, Wang Q, Lin S, Wang B, Zhou C, Cui Y, Jiang Y, Pu X, Wei X, Wu H, Zhang H, Zhu Z, Liu D, Li Z. High-salt intake increases TRPC3 expression and enhances TRPC3-mediated calcium influx and systolic blood pressure in hypertensive patients. Hypertens Res 2020; 43:679-687. [PMID: 32037396 DOI: 10.1038/s41440-020-0409-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 12/16/2019] [Accepted: 01/08/2020] [Indexed: 02/06/2023]
Abstract
Enhanced transient receptor potential canonical subtype 3 (TRPC3) expression and TRPC3-mediated calcium influx in monocytes from hypertensive rats and patients are associated with increased blood pressure. Daily salt intake is closely related to hypertension, but the relationship between TRPC3 expression and salt intake has not yet been evaluated in hypertensive patients. Using reverse transcription-polymerase chain reaction, we studied the expression of TRPC3 and TRPC3-related store-operated calcium entry (SOCE) in peripheral blood mononuclear cells (PBMCs) from hypertensive and normotensive control subjects. Measurement of SOCE was performed using the fluorescent dye Fura-2 AM. Participants were divided into a low-salt group (<9 g) and a high-salt group (≥9 g) based on 24-h urinary sodium excretion. Increased TRPC3 mRNA expression levels and SOCE were observed in THP-1 cells after high-NaCl treatment. However, administration of the TRPC3-specific inhibitor Pyr3 significantly decreased the effect. Furthermore, the TRPC3 mRNA expression levels in PBMCs from high-salt intake patients with essential hypertension were significantly higher than those in low-salt intake patients compared with those in normotensive control subjects. We also observed significantly increased TRPC3-mediated SOCE in PBMCs from hypertensive subjects (but not from normotensive control subjects), with calcium concentration correlating with salt intake. More importantly, TRPC3 mRNA levels showed a significant correlation with salt intake and systolic blood pressure in patients with essential hypertension. This study demonstrated, for the first time, that increased TRPC3 mRNA levels are associated with elevated salt intake and systolic blood pressure in hypertensive patients.
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Affiliation(s)
- Yingru Hu
- Department of Endocrinology, Yongchuan Hospital of Chongqing Medical University, Chongqing, 402160, China
| | - Weijie Xia
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yingsha Li
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Qianran Wang
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Shaoyang Lin
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Bin Wang
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Cui Zhou
- Department of Endocrinology, Yongchuan Hospital of Chongqing Medical University, Chongqing, 402160, China
| | - Yuanting Cui
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Yanli Jiang
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Xiaona Pu
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Xiao Wei
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Hao Wu
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Hengshu Zhang
- Department of Burn and Plastic Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Zhiming Zhu
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China
| | - Daoyan Liu
- Department of Hypertension and Endocrinology, Center for Hypertension and Metabolic Diseases, Daping Hospital, Third Military Medical University, Chongqing Institute of Hypertension, Chongqing, 400042, China.
| | - Zhiyong Li
- Department of Endocrinology, Yongchuan Hospital of Chongqing Medical University, Chongqing, 402160, China.
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31
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Peripheral Blood Mononuclear Cells and Platelets Mitochondrial Dysfunction, Oxidative Stress, and Circulating mtDNA in Cardiovascular Diseases. J Clin Med 2020; 9:jcm9020311. [PMID: 31979097 PMCID: PMC7073649 DOI: 10.3390/jcm9020311] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/16/2020] [Accepted: 01/19/2020] [Indexed: 12/14/2022] Open
Abstract
Cardiovascular diseases (CVDs) are devastating disorders and the leading cause of mortality worldwide. The pathophysiology of cardiovascular diseases is complex and multifactorial and, in the past years, mitochondrial dysfunction and excessive production of reactive oxygen species (ROS) have gained growing attention. Indeed, CVDs can be considered as a systemic alteration, and understanding the eventual implication of circulating blood cells peripheral blood mononuclear cells (PBMCs) and or platelets, and particularly their mitochondrial function, ROS production, and mitochondrial DNA (mtDNA) releases in patients with cardiac impairments, appears worthwhile. Interestingly, reports consistently demonstrate a reduced mitochondrial respiratory chain oxidative capacity related to the degree of CVD severity and to an increased ROS production by PBMCs. Further, circulating mtDNA level was generally modified in such patients. These data are critical steps in term of cardiac disease comprehension and further studies are warranted to challenge the possible adjunct of PBMCs’ and platelets’ mitochondrial dysfunction, oxidative stress, and circulating mtDNA as biomarkers of CVD diagnosis and prognosis. This new approach might also allow further interesting therapeutic developments.
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32
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Circulating Leukocytes and Oxidative Stress in Cardiovascular Diseases: A State of the Art. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:2650429. [PMID: 31737166 PMCID: PMC6815586 DOI: 10.1155/2019/2650429] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 09/09/2019] [Indexed: 02/07/2023]
Abstract
Increased oxidative stress from both mitochondrial and cytosolic sources contributes to the development and the progression of cardiovascular diseases (CVDs), and it is a target of therapeutic interventions. The numerous efforts made over the last decades in order to develop tools able to monitor the oxidative stress level in patients affected by CVDs rely on the need to gain information on the disease state. However, this goal has not been satisfactorily accomplished until now. Among others, the isolation of circulating leukocytes to measure their oxidant level offers a valid, noninvasive challenge that has been tested in few pathological contexts, including hypertension, atherosclerosis and its clinical manifestations, and heart failure. Since leukocytes circulate in the blood stream, it is expected that they might reflect quite closely both systemic and cardiovascular oxidative stress and provide useful information on the pathological condition. The results of the studies discussed in the present review article are promising. They highlight the importance of measuring oxidative stress level in circulating mononuclear cells in different CVDs with a consistent correlation between degree of oxidative stress and severity of CVD and of its complications. Importantly, they also point to a double role of leukocytes, both as a marker of disease condition and as a direct contributor to disease progression. Finally, they show that the oxidative stress level of leukocytes reflects the impact of therapeutic interventions. It is likely that the isolation of leukocytes and the measurement of oxidative stress, once adequately developed, may represent an eligible tool for both research and clinical purposes to monitor the role of oxidative stress on the promotion and progression of CVDs, as well as the impact of therapies.
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Shirakawa R, Yokota T, Nakajima T, Takada S, Yamane M, Furihata T, Maekawa S, Nambu H, Katayama T, Fukushima A, Saito A, Ishimori N, Dela F, Kinugawa S, Anzai T. Mitochondrial reactive oxygen species generation in blood cells is associated with disease severity and exercise intolerance in heart failure patients. Sci Rep 2019; 9:14709. [PMID: 31605012 PMCID: PMC6789126 DOI: 10.1038/s41598-019-51298-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/29/2019] [Indexed: 12/12/2022] Open
Abstract
Systemic oxidative stress plays a key role in the development of chronic heart failure (CHF). We tested the hypothesis that mitochondrial reactive oxygen species (ROS) generation in circulating peripheral blood mononuclear cells (PBMCs) contributes to CHF progression. A total of 31 patients who had a history of hospital admission due to worsening HF were enrolled and grouped as having either mild CHF defined as New York Heart Association (NYHA) functional class I-II or moderate-to-severe CHF defined as NYHA functional class III. ROS levels in PBMC mitochondria were significantly increased in CHF patients with NYHA functional class III compared to those with NYHA functional class I-II, accompanied by impaired mitochondrial respiratory capacity in PBMCs. ROS generation in PBMC mitochondria was positively correlated with urinary 8-hydroxydeoxyguanosine, a systemic oxidative stress marker, in CHF patients. Importantly, mitochondrial ROS generation in PBMCs was directly correlated with plasma levels of B-type natriuretic peptide, a biomarker for severity of HF, and inversely correlated with peak oxygen uptake, a parameter of exercise capacity, in CHF patients. The study showed that ROS generation in PBMC mitochondria was higher in patients with advanced CHF, and it was associated with disease severity and exercise intolerance in CHF patients.
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Affiliation(s)
- Ryosuke Shirakawa
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takashi Yokota
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan.
| | - Takayuki Nakajima
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Shingo Takada
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Miwako Yamane
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takaaki Furihata
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Satoshi Maekawa
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Hideo Nambu
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Takashi Katayama
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Arata Fukushima
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Akimichi Saito
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Naoki Ishimori
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Flemming Dela
- Xlab, Center for Healthy Aging, Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark.,Department of Geriatrics, Bispebjerg-Frederiksberg University Hospital, Copenhagen, Denmark
| | - Shintaro Kinugawa
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Toshihisa Anzai
- Department of Cardiovascular Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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34
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Ederlé C, Charles AL, Khayath N, Poirot A, Meyer A, Clere-Jehl R, Andres E, De Blay F, Geny B. Mitochondrial Function in Peripheral Blood Mononuclear Cells (PBMC) Is Enhanced, Together with Increased Reactive Oxygen Species, in Severe Asthmatic Patients in Exacerbation. J Clin Med 2019; 8:jcm8101613. [PMID: 31623409 PMCID: PMC6833034 DOI: 10.3390/jcm8101613] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/24/2019] [Accepted: 09/27/2019] [Indexed: 12/11/2022] Open
Abstract
Asthma is a chronic inflammatory lung syndrome with an increasing prevalence and a rare but significant risk of death. Its pathophysiology is complex, and therefore we investigated at the systemic level a potential implication of oxidative stress and of peripheral blood mononuclear cells’ (PBMC) mitochondrial function. Twenty severe asthmatic patients with severe exacerbation (GINA 4–5) and 20 healthy volunteers participated at the study. Mitochondrial respiratory chain complexes activities using different substrates and reactive oxygen species (ROS) production were determined in both groups by high-resolution respirometry and electronic paramagnetic resonance, respectively. Healthy PBMC were also incubated with a pool of plasma of severe asthmatics or healthy controls. Mitochondrial respiratory chain complexes activity (+52.45%, p = 0.015 for VADP) and ROS production (+34.3%, p = 0.02) were increased in asthmatic patients. Increased ROS did not originate mainly from mitochondria. Plasma of severe asthmatics significantly increased healthy PBMC mitochondrial dioxygen consumption (+56.8%, p = 0.031). In conclusion, such asthma endotype, characterized by increased PMBCs mitochondrial oxidative capacity and ROS production likely related to a plasma constituent, may reflect activation of the immune system. Further studies are needed to determine whether increased PBMC mitochondrial respiration might have protective effects, opening thus new therapeutic approaches.
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Affiliation(s)
- Carole Ederlé
- Pôle de Pathologie Thoracique, Service de Pneumologie, Nouvel Hôpital Civil, 1, Place de l'Hôpital, FHU OMICARE Université de Strasbourg, 67000 Strasbourg, France.
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
| | - Anne-Laure Charles
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
| | - Naji Khayath
- Pôle de Pathologie Thoracique, Service de Pneumologie, Nouvel Hôpital Civil, 1, Place de l'Hôpital, FHU OMICARE Université de Strasbourg, 67000 Strasbourg, France.
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
| | - Anh Poirot
- Pôle de Pathologie Thoracique, Service de Pneumologie, Nouvel Hôpital Civil, 1, Place de l'Hôpital, FHU OMICARE Université de Strasbourg, 67000 Strasbourg, France.
| | - Alain Meyer
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
- Service de Physiologie et d'Explorations Fonctionnelles, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 1 Place de l'Hôpital, 67091 Strasbourg CEDEX, France.
| | - Raphaël Clere-Jehl
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
| | - Emmanuel Andres
- Service de Médecine Interne, Diabète et Maladies Métaboliques, Pôle M.I.R.N.E.D., Hôpitaux Universitaires, 67000 CHRU Strasbourg CEDEX, France.
| | - Frédéric De Blay
- Pôle de Pathologie Thoracique, Service de Pneumologie, Nouvel Hôpital Civil, 1, Place de l'Hôpital, FHU OMICARE Université de Strasbourg, 67000 Strasbourg, France.
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
| | - Bernard Geny
- Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Equipe d'Accueil 3072, «Mitochondrie, Stress Oxydant, et Protection Musculaire», 11 Rue Humann, Université de Strasbourg, 67000 Strasbourg, France.
- Service de Physiologie et d'Explorations Fonctionnelles, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 1 Place de l'Hôpital, 67091 Strasbourg CEDEX, France.
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Zhu B, Li Y, Xiang L, Zhang J, Wang L, Guo B, Liang M, Chen L, Xiang L, Dong J, Liu M, Mei W, Li H, Xiang G. Alogliptin improves survival and health of mice on a high-fat diet. Aging Cell 2019; 18:e12883. [PMID: 30644630 PMCID: PMC6413659 DOI: 10.1111/acel.12883] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 10/08/2018] [Accepted: 11/01/2018] [Indexed: 12/14/2022] Open
Abstract
Alogliptin is a commonly prescribed drug treating patients with type 2 diabetes. Here, we show that long‐term intervention with alogliptin (0.03% w/w in diet) improves survival and health of mice on a high‐fat diet. Alogliptin intervention takes beneficial effects associated with longevity, including increased insulin sensitivity, attenuated functionality decline, decreased organ pathology, preserved mitochondrial function, and reduced oxidative stress. Autophagy activation is proposed as an underlying mechanism of these beneficial effects. We conclude that alogliptin intervention could be considered as a potential strategy for extending lifespan and healthspan in obesity and overweight.
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Affiliation(s)
- Biao Zhu
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Yixiang Li
- Department of Hematology and Medical Oncology, School of Medicine; Emory University; Atlanta Georgia
| | | | - Jiajia Zhang
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Li Wang
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Bei Guo
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Minglu Liang
- Clinical Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
| | - Long Chen
- Clinical Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
| | - Lin Xiang
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Jing Dong
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Min Liu
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Wen Mei
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Huan Li
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
| | - Guangda Xiang
- Department of Endocrinology; Wuhan General Hospital of Chinese People's Liberation Army; Wuhan China
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Hedges CP, Woodhead JST, Wang HW, Mitchell CJ, Cameron-Smith D, Hickey AJR, Merry TL. Peripheral blood mononuclear cells do not reflect skeletal muscle mitochondrial function or adaptation to high-intensity interval training in healthy young men. J Appl Physiol (1985) 2019; 126:454-461. [DOI: 10.1152/japplphysiol.00777.2018] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Measurement of skeletal muscle mitochondrial respiration requires invasive biopsy to obtain a muscle sample. Peripheral blood mononuclear cell (PBMC) mitochondrial protein content appears to reflect training status in young men; however, no studies have investigated whether there are training-induced changes in PBMC mitochondrial respiration. Therefore, we determined whether PBMC mitochondrial respiration could be used as a marker of skeletal muscle mitochondrial respiration in young healthy men and whether PBMC mitochondrial respiration responds to short-term training. Skeletal muscle and PBMC samples from 10 healthy young (18–35 yr) male participants were taken before and after a 2-wk high-intensity interval training protocol. High-resolution respirometry was used to determine mitochondrial respiration from muscle and PBMCs, and Western blotting and quantitative PCR were used to assess mitochondrial biogenesis in PBMCs. PBMC mitochondrial respiration was not correlated with muscle mitochondrial respiration at baseline ( R2 = 0.012–0.364, P > 0.05). While muscle mitochondrial respiration increased in response to training (32.1–61.5%, P < 0.05), PBMC respiration was not affected by training. Consequently, PBMCs did not predict training effect on muscle mitochondrial respiration ( R2 = 0.024–0.283, P > 0.05). Similarly, gene and protein markers of mitochondrial biogenesis did not increase in PBMCs following training. This suggests PBMC mitochondrial function does not reflect that of skeletal muscle and does not increase following short-term high-intensity training. PBMCs are therefore not a suitable biomarker for muscle mitochondrial function in young healthy men. It may be useful to study PBMC mitochondrial function as a biomarker of muscle mitochondrial function in pathological populations with different respiration capacities. NEW & NOTEWORTHY Research in primates has suggested that peripheral blood mononuclear cells (PBMCs) may provide a less-invasive alternative to a muscle biopsy for measuring muscle mitochondrial function. Furthermore, trained individuals appear to have greater mitochondrial content in PBMCs. Here we show that in healthy young men, PBMCs do not reflect skeletal muscle mitochondrial function and do not adapt in response to a training intervention that increases muscle mitochondrial function, suggesting PBMCs are a poor marker of muscle mitochondrial function in humans.
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Affiliation(s)
- C. P. Hedges
- Discipline of Nutrition, School of Medical Sciences, University of Auckland, Auckland, New Zealand
- Applied Surgery and Metabolism Laboratory, School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - J. S. T. Woodhead
- Discipline of Nutrition, School of Medical Sciences, University of Auckland, Auckland, New Zealand
| | - H. W. Wang
- Applied Surgery and Metabolism Laboratory, School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - C. J. Mitchell
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - D. Cameron-Smith
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - A. J. R. Hickey
- Applied Surgery and Metabolism Laboratory, School of Biological Sciences, University of Auckland, Auckland, New Zealand
| | - T. L. Merry
- Discipline of Nutrition, School of Medical Sciences, University of Auckland, Auckland, New Zealand
- Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, Auckland, New Zealand
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Ježková J, Ďurovcová V, Wenchich L, Hansíková H, Zeman J, Hána V, Marek J, Lacinová Z, Haluzík M, Kršek M. The relationship of mitochondrial dysfunction and the development of insulin resistance in Cushing's syndrome. Diabetes Metab Syndr Obes 2019; 12:1459-1471. [PMID: 31695455 PMCID: PMC6707348 DOI: 10.2147/dmso.s209095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 06/13/2019] [Indexed: 11/23/2022] Open
Abstract
PURPOSE Cushing's syndrome is characterized by metabolic disturbances including insulin resistance. Mitochondrial dysfunction is one pathogenic factor in the development of insulin resistance in patients with obesity. We explored whether mitochondrial dysfunction correlates with insulin resistance and other metabolic complications. PATIENTS AND METHODS We investigated the changes of mRNA expression of genes encoding selected subunits of oxidative phosphorylation system (OXPHOS), pyruvate dehydrogenase (PDH) and citrate synthase (CS) in subcutaneous adipose tissue (SCAT) and peripheral monocytes (PM) and mitochondrial enzyme activity in platelets of 24 patients with active Cushing's syndrome and in 9 of them after successful treatment and 22 healthy control subjects. RESULTS Patients with active Cushing's syndrome had significantly increased body mass index (BMI), homeostasis model assessment of insulin resistance (HOMA-IR) and serum lipids relative to the control group. The expression of all investigated genes for selected mitochondrial proteins was decreased in SCAT in patients with active Cushing's syndrome and remained decreased after successful treatment. The expression of most tested genes in SCAT correlated inversely with BMI and HOMA-IR. The expression of genes encoding selected OXPHOS subunits and CS was increased in PM in patients with active Cushing's syndrome with a tendency to decrease toward normal levels after cure. Patients with active Cushing's syndrome showed increased enzyme activity of complex I (NQR) in platelets. CONCLUSION Mitochondrial function in SCAT in patients with Cushing's syndrome is impaired and only slightly affected by its treatment which may reflect ongoing metabolic disturbances even after successful treatment of Cushing's syndrome.
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Affiliation(s)
- Jana Ježková
- Third Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Correspondence: Jana JežkováThird Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital, U Nemocnice 1128 02 Praha 2, Prague, Czech RepublicTel +420 60 641 2613Fax +420 22 491 9780Email
| | - Viktória Ďurovcová
- Third Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Laszlo Wenchich
- Institute of Rheumatology, Prague, Czech Republic
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Hana Hansíková
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Jiří Zeman
- Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Václav Hána
- Third Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Josef Marek
- Third Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
| | - Zdeňka Lacinová
- Institute of Medical Biochemistry and Laboratory Diagnostic, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Martin Haluzík
- Institute of Medical Biochemistry and Laboratory Diagnostic, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
- Centre for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Michal Kršek
- Third Department of Medicine, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic
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Chronic heart failure is characterized by altered mitochondrial function and structure in circulating leucocytes. Oncotarget 2018; 9:35028-35040. [PMID: 30416677 PMCID: PMC6205552 DOI: 10.18632/oncotarget.26164] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 09/13/2018] [Indexed: 12/21/2022] Open
Abstract
Oxidative stress is currently viewed as a key factor in the genesis and progression of Heart Failure (HF). The aim of this study was to characterize the mitochondrial changes linked to oxidative stress generation in circulating peripheral blood mononuclear cells isolated from chronic HF patients (HF_PBMCs) in order to highlight the involvement of mitochondrial dysfunction in the pathophysiology of HF. To assess the production of reactive oxygen species (ROS), mitochondrial function and ultrastructure and the mitophagic flux in circulating PBMCs we enrolled 15 patients with HF and a control group of ten healthy subjects. The HF_PBMCs showed a mitochondrial population consisting of damaged and less functional organelles responsible of higher superoxide anion production both at baseline and under in vitro stress conditions, with evidence of cellular apoptosis. Although the mitophagic flux at baseline was enhanced in HF_PBMCs at level similar to those that could be achieved in control PBMCs only under inflammatory stress conditions, the activation of mitophagy was unable to preserve a proper mitochondrial dynamics upon stress stimuli in HF. In summary, circulating HF_PBMCs show structural and functional derangements of mitochondria with overproduction of reactive oxidant species. This mitochondrial failure sustains a leucocyte dysfunctional status in the blood that may contribute to development and persistence of stress conditions within the cardiovascular system in HF.
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Gatterer H, Menz V, Salazar-Martinez E, Sumbalova Z, Garcia-Souza LF, Velika B, Gnaiger E, Burtscher M. Exercise Performance, Muscle Oxygen Extraction and Blood Cell Mitochondrial Respiration after Repeated-Sprint and Sprint Interval Training in Hypoxia: A Pilot Study. J Sports Sci Med 2018; 17:339-347. [PMID: 30116106 PMCID: PMC6090395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 05/07/2018] [Indexed: 06/08/2023]
Abstract
This study aimed to investigate and compare the effects of repeated-sprint (RSH) and sprint interval training in hypoxia (SIH) on sea level running and cycling performance, and to elucidate potential common or divergent adaptations of muscle perfusion and -oxygenation as well as mitochondrial respiration of blood cells. Eleven team-sport athletes performed either RSH (3x5x10s, 20s and 5min recovery between repetitions and sets) or SIH (4x30s, 5min recovery) cycling training for 3weeks (3 times/week) at a simulated altitude of 2,200m. Before and three days after the training period, a Wingate and a repeated cycling sprint test (5x6s, 20s recovery) were performed with a 30min resting period between the tests. Four to five days after the training, participants performed a repeated running sprint test (RSA, 6x17m back and forth, 20s recovery) and a Yo-Yo intermittent recovery test (YYIR2) with 1 hour active recovery between tests. The order of the tests as well as the duration of the resting periods remained the same before and after the training period. During the cycling tests near-infrared spectroscopy was performed on the vastus lateralis. In four participants, mitochondrial respiration of peripheral blood mononuclear cells (PBMC) and platelets was measured before and after training. YYIR2 running distance increased by +96.7 ± 145.6 m after RSH and by +100.0 ± 51.6 m after SIH (p = 0.034, eta² = 0.449). RSA mean running time improved by -0.138 ± 0.14s and -0.107 ± 0.08s after RSH and SIH respectively (p = 0.012, eta² = 0.564). RSH compared to SIH improved re-oxygenation during repeated sprinting. Improvements in repeated cycling were associated with improvements in re-oxygenation (r = 0.707, p <0.05). Mitochondrial electron transfer capacity normalized per PBMC count was decreased in RSH only. This study showed that cycling RSH and SIH training improves sea-level running performance. Our preliminary results suggest that RSH and SIH training results in different patterns of muscular oxygen extraction and PBMC mitochondrial respiration, without effect on platelets respiration.
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Affiliation(s)
- Hannes Gatterer
- Institute of Mountain Emergency Medicine, EURAC Research, Bolzano, Italy
- Department of Sport Science, University Innsbruck, Austria
| | - Verena Menz
- Department of Sport Science, University Innsbruck, Austria
| | | | - Zuzana Sumbalova
- Department of Visceral, Transplant, and Thoracic Surgery, D. Swarovski Research Laboratory, Medical University of Innsbruck, Austria
- Pharmacobiochemical Laboratory, 3rd Department of Internal Medicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Luiz Felipe Garcia-Souza
- Department of Sport Science, University Innsbruck, Austria
- Department of Visceral, Transplant, and Thoracic Surgery, D. Swarovski Research Laboratory, Medical University of Innsbruck, Austria
| | - Beáta Velika
- Department of Visceral, Transplant, and Thoracic Surgery, D. Swarovski Research Laboratory, Medical University of Innsbruck, Austria
- Department of Medical and Clinical Biochemistry, Faculty of Medicine, Pavol Jozef Šafárik University in Košice, Slovakia
| | - Erich Gnaiger
- Department of Visceral, Transplant, and Thoracic Surgery, D. Swarovski Research Laboratory, Medical University of Innsbruck, Austria
- Oroboros Instruments, Innsbruck, Austria
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Herman P, Stein A, Gibbs K, Korsunsky I, Gregersen P, Bloom O. Persons with Chronic Spinal Cord Injury Have Decreased Natural Killer Cell and Increased Toll-Like Receptor/Inflammatory Gene Expression. J Neurotrauma 2018; 35:1819-1829. [PMID: 29310515 PMCID: PMC6033303 DOI: 10.1089/neu.2017.5519] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Infections are the leading cause of death for individuals with traumatic spinal cord injury (SCI). Along with increased infection rates, inflammation is often also observed in persons with chronic SCI. Together, immunological changes post-SCI are also poised to impede neurological recovery and mediate common medical consequences of SCI, including atherogenesis and neuropathic pain. The molecular mechanisms contributing to increased infection susceptibility and inflammation in persons living with SCI are poorly understood. Here, we used tools of functional genomics to perform a pilot study to compare whole-blood gene expression in individuals with chronic SCI (≥1 year from initial injury; N = 31) and uninjured individuals (N = 26). We identified 1815 differentially expressed genes in all SCI participants and 2226 differentially expressed genes in persons with SCI rostral to thoracic level 5, compared to uninjured participants. This included marked downregulation of natural killer cell genes and upregulation of the proinflammatory Toll-like receptor signaling pathway. These data provide novel mechanistic insights into the causes underlying the symptoms of immune dysfunction in individuals living with SCI.
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Affiliation(s)
- Paige Herman
- 1 The Feinstein Institute for Medical Research , Northwell Health
| | - Adam Stein
- 2 Department of Physical Medicine and Rehabilitation, Zucker School of Medicine at Hofstra Northwell
| | - Katie Gibbs
- 1 The Feinstein Institute for Medical Research , Northwell Health.,2 Department of Physical Medicine and Rehabilitation, Zucker School of Medicine at Hofstra Northwell
| | - Ilya Korsunsky
- 3 Robert S. Boas Center for Genomics & Human Genetics , The Feinstein Institute for Medical Research
| | - Peter Gregersen
- 3 Robert S. Boas Center for Genomics & Human Genetics , The Feinstein Institute for Medical Research.,4 Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra Northwell , Northwell Health, Hempstead, NewYork
| | - Ona Bloom
- 1 The Feinstein Institute for Medical Research , Northwell Health.,2 Department of Physical Medicine and Rehabilitation, Zucker School of Medicine at Hofstra Northwell .,4 Department of Molecular Medicine, Donald and Barbara Zucker School of Medicine at Hofstra Northwell , Northwell Health, Hempstead, NewYork
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41
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Wang B, Xiong S, Lin S, Xia W, Li Q, Zhao Z, Wei X, Lu Z, Wei X, Gao P, Liu D, Zhu Z. Enhanced Mitochondrial Transient Receptor Potential Channel, Canonical Type 3-Mediated Calcium Handling in the Vasculature From Hypertensive Rats. J Am Heart Assoc 2017; 6:e005812. [PMID: 28711865 PMCID: PMC5586301 DOI: 10.1161/jaha.117.005812] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/11/2017] [Indexed: 12/18/2022]
Abstract
BACKGROUND Mitochondrial Ca2+ homeostasis is fundamental to the regulation of mitochondrial reactive oxygen species (ROS) generation and adenosine triphosphate production. Recently, transient receptor potential channel, canonical type 3 (TRPC3), has been shown to localize to the mitochondria and to play a role in maintaining mitochondrial calcium homeostasis. Inhibition of TRPC3 attenuates vascular calcium influx in spontaneously hypertensive rats (SHRs). However, it remains elusive whether mitochondrial TRPC3 participates in hypertension by increasing mitochondrial calcium handling and ROS production. METHODS AND RESULTS In this study we demonstrated increased TRPC3 expression in purified mitochondria in the vasculature from SHRs, which facilitates enhanced mitochondrial calcium uptake and ROS generation compared with Wistar-Kyoto rats. Furthermore, inhibition of TRPC3 by its specific inhibitor, Pyr3, significantly decreased the vascular mitochondrial ROS production and H2O2 synthesis and increased adenosine triphosphate content. Administration of telmisartan can improve these abnormalities. This beneficial effect was associated with improvement of the mitochondrial respiratory function through recovering the activity of pyruvate dehydrogenase in the vasculature of SHRs. In vivo, chronic administration of telmisartan suppressed TRPC3-mediated excessive mitochondrial ROS generation and vasoconstriction in the vasculature of SHRs. More importantly, TRPC3 knockout mice exhibited significantly ameliorated hypertension through reduction of angiotensin II-induced mitochondrial ROS generation. CONCLUSIONS Together, we give experimental evidence for a potential mechanism by which enhanced TRPC3 activity at the cytoplasmic and mitochondrial levels contributes to redox signaling and calcium dysregulation in the vasculature from SHRs. Angiotensin II or telmisartan can regulate [Ca2+]mito, ROS production, and mitochondrial energy metabolism through targeting TRPC3.
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MESH Headings
- Adenosine Triphosphate/metabolism
- Angiotensin II Type 1 Receptor Blockers/pharmacology
- Animals
- Antihypertensive Agents/pharmacology
- Benzimidazoles/pharmacology
- Benzoates/pharmacology
- Blood Pressure
- Calcium/metabolism
- Calcium Signaling/drug effects
- Cells, Cultured
- Disease Models, Animal
- Energy Metabolism
- Hypertension/drug therapy
- Hypertension/genetics
- Hypertension/metabolism
- Hypertension/physiopathology
- Male
- Mice, Knockout
- Mitochondria/drug effects
- Mitochondria/metabolism
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/physiopathology
- Myocytes, Smooth Muscle/drug effects
- Myocytes, Smooth Muscle/metabolism
- Oxidation-Reduction
- Rats, Inbred SHR
- Rats, Inbred WKY
- Reactive Oxygen Species/metabolism
- TRPC Cation Channels/genetics
- TRPC Cation Channels/metabolism
- Telmisartan
- Time Factors
- Up-Regulation
- Vasoconstriction
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Affiliation(s)
- Bin Wang
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Shiqiang Xiong
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Shaoyang Lin
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Weijie Xia
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Qiang Li
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Zhigang Zhao
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Xing Wei
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Zongshi Lu
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Xiao Wei
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Peng Gao
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Daoyan Liu
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
| | - Zhiming Zhu
- Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Third Military Medical University Chongqing Institute of Hypertension, Chongqing, China
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Tanshinone IIA Inhibits Glutamate-Induced Oxidative Toxicity through Prevention of Mitochondrial Dysfunction and Suppression of MAPK Activation in SH-SY5Y Human Neuroblastoma Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:4517486. [PMID: 28690763 PMCID: PMC5485345 DOI: 10.1155/2017/4517486] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 04/17/2017] [Accepted: 05/02/2017] [Indexed: 01/27/2023]
Abstract
Glutamate excitotoxicity is associated with many neurological diseases, including cerebral ischemia and neurodegenerative diseases. Tanshinone IIA, a diterpenoid naphthoquinone from Salvia miltiorrhiza, has been shown to suppress presynaptic glutamate release, but its protective mechanism against glutamate-induced neurotoxicity is lacking. Using SH-SY5Y human neuroblastoma cells, we show here that excessive glutamate exposure decreases cell viability and proliferation and increases LDH release. Pretreatment with tanshinone IIA, however, prevents the decrease in cell viability and proliferation and the increase in LDH release induced by glutamate. Tanshinone IIA also attenuates glutamate-induced oxidative stress by reducing reactive oxygen species level and malondialdehyde and protein carbonyl contents and by enhancing activities and protein levels of superoxide dismutase and catalase. We then show that tanshinone IIA prevents glutamate-induced mitochondrial dysfunction by increasing mitochondrial membrane potential and ATP content and by reducing mitochondrial protein carbonyl content. Moreover, tanshinone IIA can inhibit glutamate-induced apoptosis through regulation of apoptosis-related protein expression and MAPK activation, including elevation of Bcl-2 protein level, decrease in Bax and cleaved caspase-3 levels, and suppression of JNK and p38 MAPK activation. Collectively, our findings demonstrate that tanshinone IIA protects SH-SY5Y cells against glutamate toxicity by reducing oxidative stress and regulating apoptosis and MAPK pathways.
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Remodeling pathway control of mitochondrial respiratory capacity by temperature in mouse heart: electron flow through the Q-junction in permeabilized fibers. Sci Rep 2017; 7:2840. [PMID: 28588260 PMCID: PMC5460290 DOI: 10.1038/s41598-017-02789-8] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 04/18/2017] [Indexed: 12/16/2022] Open
Abstract
Fuel substrate supply and oxidative phosphorylation are key determinants of muscle performance. Numerous studies of mammalian mitochondria are carried out (i) with substrate supply that limits electron flow, and (ii) far below physiological temperature. To analyze potentially implicated biases, we studied mitochondrial respiratory control in permeabilized mouse myocardial fibers using high-resolution respirometry. The capacity of oxidative phosphorylation at 37 °C was nearly two-fold higher when fueled by physiological substrate combinations reconstituting tricarboxylic acid cycle function, compared with electron flow measured separately through NADH to Complex I or succinate to Complex II. The relative contribution of the NADH pathway to physiological respiratory capacity increased with a decrease in temperature from 37 to 25 °C. The apparent excess capacity of cytochrome c oxidase above physiological pathway capacity increased sharply under hypothermia due to limitation by NADH-linked dehydrogenases. This mechanism of mitochondrial respiratory control in the hypothermic mammalian heart is comparable to the pattern in ectotherm species, pointing towards NADH-linked mt-matrix dehydrogenases and the phosphorylation system rather than electron transfer complexes as the primary drivers of thermal sensitivity at low temperature. Delineating the link between stress and remodeling of oxidative phosphorylation is important for understanding metabolic perturbations in disease evolution and cardiac protection.
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Phosphorylation of Histone H2A.X in Peripheral Blood Mononuclear Cells May Be a Useful Marker for Monitoring Cardiometabolic Risk in Nondiabetic Individuals. DISEASE MARKERS 2017; 2017:2050194. [PMID: 28572698 PMCID: PMC5441116 DOI: 10.1155/2017/2050194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Revised: 04/02/2017] [Accepted: 04/11/2017] [Indexed: 11/23/2022]
Abstract
Phosphorylation of H2A.X (serine 139) in the histone H2A family located in the downstream of the DNA damage kinase signaling cascade is an important indicator of DNA damage. Recently, phosphorylation of H2A.X was proposed as a sensitive biomarker of aging. This study investigated if phosphorylation of H2A.X in peripheral blood mononuclear cells (PBMCs) is associated with cardiometabolic risk in nondiabetic individuals. Basic parameters and oxidative stress/inflammatory markers were measured in nondiabetic healthy Koreans (n = 119). Phosphorylation of H2A.X was measured randomly among the study subjects using a flow cytometer. According to the number of metabolic syndrome risk factor (MetS-RF), the study subjects were subdivided into “super healthy” (MetS − RF = 0, n = 71) and “MetS-risk” (MetS − RF ≥ 1, n = 48) groups. Phosphorylation of H2A.X in PBMCs (percentages and mean fluorescence intensity) was significantly higher in the MetS-risk group than in the super healthy group after adjusting for age, sex, cigarette smoking, and alcohol consumption. Phosphorylated H2A.X was positively correlated with the number of MetS-RF as well as waist circumference, blood pressures, triglyceride, HbA1C, oxidized LDL, high sensitivity C-reactive protein, tumor necrosis factor-alpha, and alanine aminotransferase after the adjustment. The present study suggested that phosphorylated H2A.X in circulating PBMCs measured by flow cytometer may be a useful marker for monitoring cardiometabolic risk in nondiabetic individuals.
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Qi S, Barnig C, Charles AL, Poirot A, Meyer A, Clere-Jehl R, de Blay F, Geny B. Effect of nasal allergen challenge in allergic rhinitis on mitochondrial function of peripheral blood mononuclear cells. Ann Allergy Asthma Immunol 2017; 118:367-369. [PMID: 28073613 DOI: 10.1016/j.anai.2016.11.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 11/24/2016] [Accepted: 11/29/2016] [Indexed: 11/19/2022]
Affiliation(s)
- Shanshan Qi
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France; Service de Pneumologie, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle, Strasbourg, France
| | - Cindy Barnig
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France; Fédération de Médecine Translationnelle, Strasbourg, France; Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
| | - Anne-Laure Charles
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France
| | - Anh Poirot
- Service de Pneumologie, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Alain Meyer
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France; Fédération de Médecine Translationnelle, Strasbourg, France; Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Raphaël Clere-Jehl
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France; Fédération de Médecine Translationnelle, Strasbourg, France
| | - Fréderic de Blay
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France; Service de Pneumologie, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Fédération de Médecine Translationnelle, Strasbourg, France
| | - Bernard Geny
- Université de Strasbourg, Mitochondrie, Stress Oxydant et Protection Musculaire, Strasbourg, France; Fédération de Médecine Translationnelle, Strasbourg, France; Service de Physiologie et d'Explorations Fonctionnelles, Pôle de Pathologie Thoracique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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Guo Y, Deng X, Chen S, Yang L, Ni J, Wang R, Lin J, Bai M, Jia Z, Huang S, Zhang A. MicroRNA-30e targets BNIP3L to protect against aldosterone-induced podocyte apoptosis and mitochondrial dysfunction. Am J Physiol Renal Physiol 2016; 312:F589-F598. [PMID: 27974319 DOI: 10.1152/ajprenal.00486.2016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Revised: 12/07/2016] [Accepted: 12/07/2016] [Indexed: 12/20/2022] Open
Abstract
MicroRNAs are essential for the maintenance of podocyte homeostasis. Emerging evidence has demonstrated a protective role of microRNA-30a (miR-30a), a member of the miR-30 family, in podocyte injury. However, the roles of other miR-30 family members in podocyte injury are unclear. The present study was undertaken to investigate the contribution of miR-30e to the pathogenesis of podocyte injury induced by aldosterone (Aldo), as well as the underlying mechanism. After Aldo treatment, miR-30e was reduced in a dose-and time-dependent manner. Notably, overexpression of miR-30e markedly attenuated Aldo-induced apoptosis in podocytes. In agreement with this finding, miR-30e silencing led to significant podocyte apoptosis. Mitochondrial dysfunction (MtD) has been shown to be an early event in Aldo-induced podocyte injury. Here we found that overexpression of miR-30e improved Aldo-induced MtD while miR-30e silencing resulted in MtD. Next, we found that miR-30e could directly target the BCL2/adenovirus E1B-interacting protein 3-like (BNIP3L) gene. Aldo markedly enhanced BNIP3L expression in podocytes, and silencing of BNIP3L largely abolished Aldo-induced MtD and cell apoptosis. On the contrary, overexpression of BNIP3L induced MtD and apoptosis in podocytes. Together, these findings demonstrate that miR-30e protects mitochondria and podocytes from Aldo challenge by targeting BNIP3L.
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Affiliation(s)
- Yan Guo
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Xu Deng
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Shuang Chen
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Lingyun Yang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Jiajia Ni
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Rong Wang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Jiajuan Lin
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Mi Bai
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Zhanjun Jia
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Songming Huang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and.,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Aihua Zhang
- Department of Nephrology, Children's Hospital of Nanjing Medical University, Nanjing, China; and .,Jiangsu Key Laboratory of Pediatrics, Nanjing Medical University, Nanjing, China
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Zeliger HI. Predicting disease onset in clinically healthy people. Interdiscip Toxicol 2016; 9:39-54. [PMID: 28652846 PMCID: PMC5458104 DOI: 10.1515/intox-2016-0006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Revised: 04/12/2016] [Accepted: 04/17/2016] [Indexed: 11/17/2022] Open
Abstract
Virtually all human disease is induced by oxidative stress. Oxidative stress, which is caused by toxic environmental exposure, the presence of disease, lifestyle choices, stress, chronic inflammation or combinations of these, is responsible for most disease. Oxidative stress from all sources is additive and it is the total oxidative stress from all sources that induces the onset of most disease. Oxidative stress leads to lipid peroxidation, which in turn produces Malondialdehyde. Serum malondialdehyde level is an additive parameter resulting from all sources of oxidative stress and, therefore, is a reliable indicator of total oxidative stress which can be used to predict the onset of disease in clinically asymptomatic individuals and to suggest the need for treatment that can prevent much human disease.
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48
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Bielli A, Scioli MG, Mazzaglia D, Doldo E, Orlandi A. Antioxidants and vascular health. Life Sci 2015; 143:209-16. [DOI: 10.1016/j.lfs.2015.11.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/06/2015] [Accepted: 11/12/2015] [Indexed: 01/04/2023]
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