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Ibrahim I, Nuermaimaiti Y, Maimaituxun G, Luo X, Maimaituxun M, Akbar A, Tuerxun K, Wu Y. Neutrophil Extracellular Traps (NETs) Are Associated with Type 2 Diabetes and Diabetic Foot Ulcer Related Amputation: A Prospective Cohort Study. Diabetes Ther 2024; 15:1333-1348. [PMID: 38619692 PMCID: PMC11096146 DOI: 10.1007/s13300-024-01579-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 03/26/2024] [Indexed: 04/16/2024] Open
Abstract
INTRODUCTION The prevalence of diabetes mellitus and its sequelae has been on the rise, and diabetic foot ulcer (DFU) is the leading cause of non-traumatic lower limb amputation globally. The rising occurrence and financial burden associated with DFU necessitate improved clinical assessment and treatment. Diabetes has been found to enhance the formation of neutrophil extracellular traps (NETs) by neutrophils, and excessive NETs have been implicated in tissue damage and impaired wound healing. However, there is as yet insufficient evidence to clarify the value of NETs in assessing and predicting outcomes of DFU. METHODS We designed this prospective study with three cohorts formed from type 2 diabetes mellitus (T2DM) patients with DFU (n = 200), newly diagnosed T2DM patients (n = 42), and healthy donors (n = 38). Serum levels of NETs were detected for all groups, and the prognostic value for DFU-related amputation was analyzed. RESULTS The results showed that serum NET levels of the DFU group were significantly higher than in the T2DM group (P < 0.05), which also had significantly elevated serum NET levels compared to healthy donors (P < 0.05). Multivariate Cox regression showed that serum NET levels, diabetic foot surgical history, and Wagner grade were the risk factors for amputation (P < 0.05), and these three variables also exhibited the highest coefficient values in additional Lasso Cox regression. For patients with DFU, Kaplan-Meier curves showed that high serum NET levels associated with higher amputation probability (HR = 0.19, P < 0.01) and ROC curve based on NET value showed good validity for amputation (AUC: 0.727, CI 0.651-0.803). CONCLUSION Elevated serum NET levels serve as an easily accessible serological prognostic marker for assessing the risk of DFU-related amputation, thereby offering evaluation metrics for healthcare providers. Further investigations are necessary to understand the mechanisms driving this relationship.
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Affiliation(s)
- Irshat Ibrahim
- Department of General Surgery, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China
| | - Yilimire Nuermaimaiti
- Department of Endocrinology, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China
| | | | - Xinling Luo
- Department of General Surgery, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China
| | - Mailudemu Maimaituxun
- Department of Endocrinology, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China
| | - Azimat Akbar
- Department of General Surgery, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China
| | - Kahaer Tuerxun
- Department of General Surgery, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China.
| | - Yuanquan Wu
- Department of General Surgery, The First People's Hospital of Kashi Prefecture, Kashi, 844000, China.
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Serban D, Papanas N, Dascalu AM, Kempler P, Raz I, Rizvi AA, Rizzo M, Tudor C, Silviu Tudosie M, Tanasescu D, Pantea Stoian A, Gouveri E, Ovidiu Costea D. Significance of Neutrophil to Lymphocyte Ratio (NLR) and Platelet Lymphocyte Ratio (PLR) in Diabetic Foot Ulcer and Potential New Therapeutic Targets. INT J LOW EXTR WOUND 2024; 23:205-216. [PMID: 34791913 DOI: 10.1177/15347346211057742] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Diabetic foot ulcer (DFU) is a well-known complication of diabetes and a significant burden on the national health systems. The neutrophil/lymphocyte ratio (NLR) and platelet/lymphocyte ratio are inexpensive and easily accessible biomarkers that have proved to be useful in several inflammatory, infectious and cardiovascular diseases. We carried out a comprehensive review examining the association of NLR and PLR with the onset and progression of DFU. PLR and NLR were significantly increased in patients with DFU, compared with a control group of T2DM patients without DFU, and correlate well with DFU severity, evaluated by Wagner and IWGDF grading scales. In patients with diabetic foot infections (DFI), elevated NLR and PLR were correlated with osteomyelitis, increased risk of amputation, and septic complications. The significance of the elevated value of these biomarkers in DFU is related to chronic hyperglycemia and low-grade systemic inflammation, atherosclerotic and vascular complications, and also the associated septic factor. Serial, dynamic follow-up can provide useful information in planning and monitoring DFU treatment, as well as in risk stratification of these vulnerable patients. Further randomized studies are needed to set the cut-off values with clinical significance.
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Affiliation(s)
- Dragos Serban
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania, ; ;
- Fourth Department of General Surgery, Emergency University Hospital, Romania,
| | - Nikolaos Papanas
- Diabetes Centre-Diabetic Foot Clinic, Democritus University of Thrace, University Hospital of Alexandroupolis, Greece,
| | - Ana Maria Dascalu
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania, ; ;
- Department of Ophthalmology, Emergency University Hospital Bucharest, Romania
| | | | | | - Ali A Rizvi
- Emory University, Atlanta, GA, USA,
- University of South Carolina School of Medicine Columbia, SC, USA
| | - Manfredi Rizzo
- University of South Carolina School of Medicine Columbia, SC, USA
- Mother and Child Care, Internal Medicine and Medical Specialties, University of Palermo, Italy,
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania,
| | - Corneliu Tudor
- Fourth Department of General Surgery, Emergency University Hospital, Romania,
| | - Mihail Silviu Tudosie
- "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania, ; ;
- Clinical Emergency Hospital, Bucharest, Romania
| | | | | | | | - Daniel Ovidiu Costea
- Ovidius University, Constanta, Romania,
- Emergency County Hospital, Constanta, Romania
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Quiroga J, Cortes B, Sarmiento J, Morán G, Henríquez C. Characterization of extracellular trap production and release by equine neutrophils in response to different stimuli. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2024; 155:105151. [PMID: 38423491 DOI: 10.1016/j.dci.2024.105151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 01/31/2024] [Accepted: 02/19/2024] [Indexed: 03/02/2024]
Abstract
This study explores Neutrophil Extracellular Trap (NET) formation in equine neutrophils, which is crucial for eliminating infections and is implicated in various equine inflammatory diseases. We investigated the molecular pathways involved in NET release by equine neutrophils in response to stimuli. We use PMA, A23187, LPS, PAF, OZ, and cytokines, observing NET release in response to PMA, PAF, and A23187. In contrast, LPS, OZ, and the cytokines tested did not induce DNA release or did not consistently induce citrullination of histone 4. Peptidyl-arginine deiminase inhibition completely halted NET release, while NADPH oxidase and mitochondrial reactive oxygen species only played a role in PMA-induced NETs. Neutrophil elastase inhibition modestly affected PAF-induced NET liberation but not in PMA or A23187-induced NET, while myeloperoxidase did not contribute to NET release. We expect to provide a foundation for future investigations into the role of NETs in equine health and disease and the search for potential therapeutic targets.
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Affiliation(s)
- John Quiroga
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Bayron Cortes
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - José Sarmiento
- Instituto de Fisiología, Facultad de Medicina, Universidad Austral de Chile, Chile
| | - Gabriel Morán
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Claudio Henríquez
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile.
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Wu X, Yang Y. Neutrophil extracellular traps (NETs) and fibrotic diseases. Int Immunopharmacol 2024; 133:112085. [PMID: 38626550 DOI: 10.1016/j.intimp.2024.112085] [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: 02/28/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/18/2024]
Abstract
Fibrosis, a common cause and serious outcome of organ failure that can affect any organ, is responsible for up to 45% of all deaths in various clinical settings. Both preclinical models and clinical trials investigating various organ systems have shown that fibrosis is a highly dynamic process. Although many studies have sought to gain understanding of the mechanism of fibrosis progression, their findings have been mixed. In recent years, increasing evidence indicates that neutrophil extracellular traps (NETs) are involved in many inflammatory and autoimmune disorders and participate in the regulation of fibrotic processes in various organs and systems. In this review, we summarize the current understanding of the role of NETs in fibrosis development and progression and their possibility as therapeutic targets.
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Affiliation(s)
- Xiaojiao Wu
- School of Pediatrics, Nanjing Medical University, Nanjing, China
| | - Yang Yang
- Department of Gastroenterology, Sir Run Run Hospital, Nanjing Medical University, Nanjing, China.
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5
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Joshi G, Das A, Verma G, Guchhait P. Viral infection and host immune response in diabetes. IUBMB Life 2024; 76:242-266. [PMID: 38063433 DOI: 10.1002/iub.2794] [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: 03/17/2023] [Accepted: 11/05/2023] [Indexed: 04/24/2024]
Abstract
Diabetes, a chronic metabolic disorder disrupting blood sugar regulation, has emerged as a prominent silent pandemic. Uncontrolled diabetes predisposes an individual to develop fatal complications like cardiovascular disorders, kidney damage, and neuropathies and aggravates the severity of treatable infections. Escalating cases of Type 1 and Type 2 diabetes correlate with a global upswing in diabetes-linked mortality. As a growing global concern with limited preventive interventions, diabetes necessitates extensive research to mitigate its healthcare burden and assist ailing patients. An altered immune system exacerbated by chronic hyperinflammation heightens the susceptibility of diabetic individuals to microbial infections, including notable viruses like SARS-CoV-2, dengue, and influenza. Given such a scenario, we scrutinized the literature and compiled molecular pathways and signaling cascades related to immune compartments in diabetics that escalate the severity associated with the above-mentioned viral infections in them as compared to healthy individuals. The pathogenesis of these viral infections that trigger diabetes compromises both innate and adaptive immune functions and pre-existing diabetes also leads to heightened disease severity. Lastly, this review succinctly outlines available treatments for diabetics, which may hold promise as preventive or supportive measures to effectively combat these viral infections in the former.
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Affiliation(s)
- Garima Joshi
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
| | - Anushka Das
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
| | - Garima Verma
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
| | - Prasenjit Guchhait
- Regional Centre for Biotechnology, National Capital Region Biotech Science Cluster, Faridabad, India
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Shrestha S, Lee YB, Lee H, Choi YK, Park BY, Kim MJ, Youn YJ, Kim SH, Jung SJ, Song DK, Jin HK, Bae JS, Lee IK, Jeon JH, Hong CW. Diabetes Primes Neutrophils for Neutrophil Extracellular Trap Formation through Trained Immunity. RESEARCH (WASHINGTON, D.C.) 2024; 7:0365. [PMID: 38654733 PMCID: PMC11037460 DOI: 10.34133/research.0365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 04/02/2024] [Indexed: 04/26/2024]
Abstract
Neutrophils are primed for neutrophil extracellular trap (NET) formation during diabetes, and excessive NET formation from primed neutrophils compromises wound healing in patients with diabetes. Here, we demonstrate that trained immunity mediates diabetes-induced NET priming in neutrophils. Under diabetic conditions, neutrophils exhibit robust metabolic reprogramming comprising enhanced glycolysis via the pentose phosphate pathway and fatty acid oxidation, which result in the accumulation of acetyl-coenzyme A. Adenosine 5'-triphosphate-citrate lyase-mediated accumulation of acetyl-coenzyme A and histone acetyltransferases further induce the acetylation of lysine residues on histone 3 (AcH3K9, AcH3K14, and AcH3K27) and histone 4 (AcH4K8). The pharmacological inhibition of adenosine 5'-triphosphate-citrate lyase and histone acetyltransferases completely inhibited high-glucose-induced NET priming. The trained immunity of neutrophils was further confirmed in neutrophils isolated from patients with diabetes. Our findings suggest that trained immunity mediates functional changes in neutrophils in diabetic environments, and targeting neutrophil-trained immunity may be a potential therapeutic target for controlling inflammatory complications of diabetes.
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Affiliation(s)
- Sanjeeb Shrestha
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
| | - Yu-Bin Lee
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
| | - Hoyul Lee
- Leading-edge Research Center for Drug Discovery and Development for Diabetes and Metabolic Disease,
Kyungpook National University Hospital, Daegu 41404, Republic of Korea
- Research Institute of Aging and Metabolism,
Kyungpook National University, Daegu 41404, Republic of Korea
| | - Yeon-Kyung Choi
- Department of Internal Medicine, School of Medicine, Kyungpook National University,
Kyungpook National University Chilgok Hospital, Daegu 41404, Republic of Korea
| | - Bo-Yoon Park
- Research Institute of Aging and Metabolism,
Kyungpook National University, Daegu 41404, Republic of Korea
| | - Mi-Jin Kim
- Research Institute of Aging and Metabolism,
Kyungpook National University, Daegu 41404, Republic of Korea
| | - Young-Jin Youn
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
| | - Sun-Hwa Kim
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
| | - Soo-Jung Jung
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
| | - Dong-Keun Song
- Department of Pharmacology, College of Medicine,
Hallym University, Chuncheon 24252, Republic of Korea
| | - Hee Kyung Jin
- Department of Laboratory Animal Medicine, College of Veterinary Medicine,
Kyungpook National University, Daegu 41566, Republic of Korea
- KNU Alzheimer’s disease Research Institute,
Kyungpook National University, Daegu 41566, Republic of Korea
| | - Jae-Sung Bae
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
- KNU Alzheimer’s disease Research Institute,
Kyungpook National University, Daegu 41566, Republic of Korea
| | - In-Kyu Lee
- Leading-edge Research Center for Drug Discovery and Development for Diabetes and Metabolic Disease,
Kyungpook National University Hospital, Daegu 41404, Republic of Korea
- Department of Internal Medicine, School of Medicine, Kyungpook National University,
Kyungpook National University Chilgok Hospital, Daegu 41404, Republic of Korea
- Department of Internal Medicine, School of Medicine, Kyungpook National University,
Kyungpook National University Hospital, Daegu 41940, Republic of Korea
| | - Jae-Han Jeon
- Leading-edge Research Center for Drug Discovery and Development for Diabetes and Metabolic Disease,
Kyungpook National University Hospital, Daegu 41404, Republic of Korea
- Research Institute of Aging and Metabolism,
Kyungpook National University, Daegu 41404, Republic of Korea
- Department of Internal Medicine, School of Medicine, Kyungpook National University,
Kyungpook National University Chilgok Hospital, Daegu 41404, Republic of Korea
| | - Chang-Won Hong
- Department of Physiology, School of Medicine,
Kyungpook National University, Daegu 41944, Republic of Korea
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Lecomte K, Toniolo A, Hoste E. Cell death as an architect of adult skin stem cell niches. Cell Death Differ 2024:10.1038/s41418-024-01297-3. [PMID: 38649745 DOI: 10.1038/s41418-024-01297-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 04/09/2024] [Accepted: 04/11/2024] [Indexed: 04/25/2024] Open
Abstract
Our skin provides a physical and immunological barrier against dehydration and environmental insults ranging from microbial attacks, toxins and UV irradiation to wounding. Proper functioning of the skin barrier largely depends on the interplay between keratinocytes- the epithelial cells of the skin- and immune cells. Two spatially distinct populations of keratinocyte stem cells (SCs) maintain the epidermal barrier function and the hair follicle. These SCs are inherently long-lived, but cell death can occur within their niches and impacts their functionality. The default cell death programme in skin is apoptosis, an orderly and non-inflammatory suicide programme. However, recent findings are shedding light on the significance of various modes of regulated necrotic cell death, which are lytic and can provoke inflammation within the local skin environment. While the presence of dying cells was generally regarded as a mere consequence of inflammation, findings in various human dermatological conditions and experimental mouse models of aberrant cell death control demonstrated that cell death programmes in keratinocytes (KCs) can drive skin inflammation and even tumour initiation. When cells die, they need to be removed by phagocytosis and KCs can function as non-professional phagocytes of apoptotic cells with important implications for their SC capacities. It is becoming apparent that in conditions of heightened SC activity, distinct cell death modalities differentially impact the different skin SC populations in their local niches. Here, we describe how regulated cell death modalities functionally affect epidermal SC niches along with their relevance to injury repair, inflammatory skin disorders and cancer.
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Affiliation(s)
- Kim Lecomte
- VIB Center for Inflammation Research, 9052, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9052, Ghent, Belgium
| | - Annagiada Toniolo
- VIB Center for Inflammation Research, 9052, Ghent, Belgium
- Department of Biomedical Molecular Biology, Ghent University, 9052, Ghent, Belgium
| | - Esther Hoste
- VIB Center for Inflammation Research, 9052, Ghent, Belgium.
- Department of Biomedical Molecular Biology, Ghent University, 9052, Ghent, Belgium.
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Saleem M, Syed Khaja AS, Moursi S, Altamimi TA, Alharbi MS, Usman K, Khan MS, Alaskar A, Alam MJ. Narrative review on nanoparticles based on current evidence: therapeutic agents for diabetic foot infection. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024:10.1007/s00210-024-03094-8. [PMID: 38639898 DOI: 10.1007/s00210-024-03094-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/11/2024] [Indexed: 04/20/2024]
Abstract
Diabetes's effects on wound healing present a major treatment challenge and increase the risk of amputation. When traditional therapies fail, new approaches must be investigated. With their submicron size and improved cellular internalisation, nanoparticles present a viable way to improve diabetic wound healing. They are attractive options because of their innate antibacterial qualities, biocompatibility, and biodegradability. Nanoparticles loaded with organic or inorganic compounds, or embedded in biomimetic matrices such as hydrogels, chitosan, and hyaluronic acid, exhibit excellent anti-inflammatory, antibacterial, and antioxidant properties. Drug delivery systems (DDSs)-more precisely, nanodrug delivery systems (NDDSs)-use the advantages of nanotechnology to get around some of the drawbacks of traditional DDSs. Recent developments show how expertly designed nanocarriers can carry a variety of chemicals, transforming the treatment of diabetic wounds. Biomaterials that deliver customised medications to the wound microenvironment demonstrate potential. Delivery techniques for nanomedicines become more potent than ever, overcoming conventional constraints. Therapeutics for diabetes-induced non-healing wounds are entering a revolutionary era thanks to precisely calibrated nanocarriers that effectively distribute chemicals. This review highlights the therapeutic potential of nanoparticles and outlines the multifunctional nanoparticles of the future that will be used for complete wound healing in diabetics. The investigation of novel nanodrug delivery systems has the potential to revolutionise diabetic wound therapy and provide hope for more efficient and focused therapeutic approaches.
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Affiliation(s)
- Mohd Saleem
- Department of Pathology, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia.
| | | | - Soha Moursi
- Department of Pathology, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia
| | - Tahani Almofeed Altamimi
- Department of Family Medicine, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia
| | - Mohammed Salem Alharbi
- Department of Internal Medicine, College of Medicine, University of Hail, 55211, Hail, Saudi Arabia
| | - Kauser Usman
- Department of Internal Medicine, King George's Medical University, Lucknow, India
| | - Mohd Shahid Khan
- Department of Microbiology, Integral Institute of Medical Sciences and Research, Lucknow, India
| | - Alwaleed Alaskar
- Department of Diabetes and Endocrinology, King Salman Specialist Hospital, 55211, Hail, Saudi Arabia
| | - Mohammad Jahoor Alam
- Department of Biology, College of Science, University of Hail, 55211, Hail, Saudi Arabia
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Storms N, de la Rebière G, Franck T, Mouithys Mickalad A, Sandersen C, Ceusters J, Serteyn D. Neutrophil extracellular traps and active myeloperoxidase concentrate in lamellar tissue of equids with naturally occurring laminitis. Vet Immunol Immunopathol 2024; 270:110738. [PMID: 38452577 DOI: 10.1016/j.vetimm.2024.110738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 02/20/2024] [Accepted: 02/21/2024] [Indexed: 03/09/2024]
Abstract
Laminitis is a pathology of the equine digit ultimately leading to a failure of the dermo-epidermal interface. Neutrophil activation is recognized as a major factor in SIRS-associated laminitis and has recently been described in induced endocrinopathic laminitis evidenced by the presence of myeloperoxidase (MPO). Neutrophil extracellular traps (NET) are released with neutrophil activation. This study aimed to investigate the presence and activity of MPO and NET in the lamellar tissue of equids presented with naturally occurring laminitis. Samples of lamellar tissue of five horses and five donkeys presented with laminitis, as well as eight control horses without laminitis, were collected. Lamellar tissue extracts were submitted to ELISA and specific immuno-extraction followed by enzymatic detection (SIEFED) assays to confirm the presence and activity of both MPO and NET. Lamellar sections were also immunohistopathologically stained for MPO and NET. Analysis of lamellar tissue extracts revealed that laminitis cases had significantly higher levels of total MPO concentration, MPO activity, and NET-bound MPO activity in comparison to control horses. Moreover, a strong correlation was identified between the activity of NET-bound MPO and the total MPO activity, which suggests that MPO activity partly originates from NET-bound MPO. Immunohistochemical staining showed that MPO and NET labelling in laminitis cases was moderate to marked, primarily in the epidermis and in inflammatory infiltrates containing neutrophils, while labelling in control horses was minimal. This article constitutes the first indication of the presence and activity of NET-bound MPO in the lamellar tissue of horses and donkeys with naturally occurring laminitis. Targeting these substances may provide new treatment possibilities for this debilitating disease.
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Affiliation(s)
- Nazaré Storms
- Department of Equine Surgery and Anesthesiology of the University of Liège, B41, Quartier vallée 2, Avenue de Cureghem 5D, Liège 4000, Belgium; Center for Oxygen Research and Development, B6, Quartier Agora, B6a, Liège 4000, Belgium.
| | - Geoffroy de la Rebière
- Department of Equine Surgery and Anesthesiology of the University of Liège, B41, Quartier vallée 2, Avenue de Cureghem 5D, Liège 4000, Belgium
| | - Thierry Franck
- Center for Oxygen Research and Development, B6, Quartier Agora, B6a, Liège 4000, Belgium
| | - Ange Mouithys Mickalad
- Center for Oxygen Research and Development, B6, Quartier Agora, B6a, Liège 4000, Belgium
| | - Charlotte Sandersen
- Department of Equine Surgery and Anesthesiology of the University of Liège, B41, Quartier vallée 2, Avenue de Cureghem 5D, Liège 4000, Belgium; Center for Oxygen Research and Development, B6, Quartier Agora, B6a, Liège 4000, Belgium
| | - Justine Ceusters
- Center for Oxygen Research and Development, B6, Quartier Agora, B6a, Liège 4000, Belgium
| | - Didier Serteyn
- Department of Equine Surgery and Anesthesiology of the University of Liège, B41, Quartier vallée 2, Avenue de Cureghem 5D, Liège 4000, Belgium; Center for Oxygen Research and Development, B6, Quartier Agora, B6a, Liège 4000, Belgium
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10
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Aslanian-Kalkhoran L, Mehdizadeh A, Aghebati-Maleki L, Danaii S, Shahmohammadi-Farid S, Yousefi M. The role of neutrophils and neutrophil extracellular traps (NETs) in stages, outcomes and pregnancy complications. J Reprod Immunol 2024; 163:104237. [PMID: 38503075 DOI: 10.1016/j.jri.2024.104237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 01/23/2024] [Accepted: 03/07/2024] [Indexed: 03/21/2024]
Abstract
Neutrophils are the main components of innate immunity to eliminate infectious pathogens. Neutrophils play a role in several stages of the reproductive cycle, and their presence in the female reproductive system is highly regulated, so their function may change during pregnancy. Emerging evidence suggests that neutrophils are important at all stages of pregnancy, from implantation, placentation, and connective tissue regeneration to birth, as well as birth itself. Neutrophil extracellular traps (NETs) are defined as extracellular strands of unfolded DNA together with histone complexes and neutrophil granule proteins. NET formation is a new mechanism of these cells for their defense function. These strands containing DNA and antimicrobial peptides were initially recognized as one of the defense mechanisms of neutrophils, but later it was explained that they are involved in a variety of non-infectious diseases. Since the source of inflammation and tissue damage is the irregular activity of neutrophils, it is not surprising that NETosis are associated with a number of inflammatory conditions and diseases. The overexpression of NET components or non-principled NET clearance is associated with the risk of production and activation of autoantibodies, which results in participation in autoinflammatory and autoimmune disorders (SLE, RA), fibrosis, sepsis and other disorders such as vascular diseases, for example, thrombosis and atherosclerosis. Recent published articles have shown the role of neutrophils and extracellular traps (NETs) in pregnancy, childbirth and pregnancy-related diseases. The aim of this study was to identify and investigate the role of neutrophils and neutrophil extracellular traps (NETs) in the stages of pregnancy, as well as the complications caused by these cells.
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Affiliation(s)
- Lida Aslanian-Kalkhoran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Mehdizadeh
- Hematology and Oncology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Shahla Danaii
- Gynecology Department, Eastern Azerbaijan ACECR ART Centre, Eastern Azerbaijan Branch of ACECR, Tabriz, Iran
| | | | - Mehdi Yousefi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
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11
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Wang Y, Wang C, Li J. Neutrophil extracellular traps: a catalyst for atherosclerosis. Mol Cell Biochem 2024:10.1007/s11010-024-04931-3. [PMID: 38401035 DOI: 10.1007/s11010-024-04931-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/05/2024] [Indexed: 02/26/2024]
Abstract
Neutrophil extracellular traps (NETs) are network-like structures released by activated neutrophils. They consist mainly of double-stranded DNA, histones, and neutrophil granule proteins. Continuous release of NETs in response to external stimuli leads to activation of surrounding platelets and monocytes/macrophages, resulting in damage to endothelial cells (EC) and vascular smooth muscle cells (VSMC). Some clinical trials have demonstrated the association between NETs and the severity and prognosis of atherosclerosis. Furthermore, experimental findings have shed light on the molecular mechanisms by which NETs contribute to atherogenesis. NETs play a significant role in the formation of atherosclerotic plaques. This review focuses on recent advancements in the understanding of the relationship between NETs and atherosclerosis. It explores various aspects, including the formation of NETs in atherosclerosis, clinical trials investigating NET-induced atherosclerosis, the mechanisms by which NETs promote atherogenesis, and the translational implications of NETs. Ultimately, we aim to propose new research directions for the diagnosis and treatment of atherosclerosis.
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Affiliation(s)
- Yinyu Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Cuiping Wang
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China.
| | - Jiayan Li
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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Zhang X, Zhang J, Ren Y, Sun R, Zhai X. Unveiling the pathogenesis and therapeutic approaches for diabetic nephropathy: insights from panvascular diseases. Front Endocrinol (Lausanne) 2024; 15:1368481. [PMID: 38455648 PMCID: PMC10918691 DOI: 10.3389/fendo.2024.1368481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 02/08/2024] [Indexed: 03/09/2024] Open
Abstract
Diabetic nephropathy (DN) represents a significant microvascular complication in diabetes, entailing intricate molecular pathways and mechanisms associated with cardiorenal vascular diseases. Prolonged hyperglycemia induces renal endothelial dysfunction and damage via metabolic abnormalities, inflammation, and oxidative stress, thereby compromising hemodynamics. Concurrently, fibrotic and sclerotic alterations exacerbate glomerular and tubular injuries. At a macro level, reciprocal communication between the renal microvasculature and systemic circulation establishes a pernicious cycle propelling disease progression. The current management approach emphasizes rigorous control of glycemic levels and blood pressure, with renin-angiotensin system blockade conferring renoprotection. Novel antidiabetic agents exhibit renoprotective effects, potentially mediated through endothelial modulation. Nonetheless, emerging therapies present novel avenues for enhancing patient outcomes and alleviating the disease burden. A precision-based approach, coupled with a comprehensive strategy addressing global vascular risk, will be pivotal in mitigating the cardiorenal burden associated with diabetes.
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Affiliation(s)
- Xiaoqian Zhang
- Department of Nephrology, Beijing Hospital of Integrated Traditional Chinese and Western Medicine, Beijing, China
| | - Jiale Zhang
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yan Ren
- Xiyuan Hospital of China Academy of Chinese Medical Sciences, Beijing, China
| | - Ranran Sun
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xu Zhai
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Luo J, Qin X, Zhang X, Zhang Y, Yuan F, Shi W, Liu B, Wei Y. Prognostic implications of systemic immune-inflammation index in myocardial infarction patients with and without diabetes: insights from the NOAFCAMI-SH registry. Cardiovasc Diabetol 2024; 23:41. [PMID: 38254086 PMCID: PMC10804591 DOI: 10.1186/s12933-024-02129-x] [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: 08/20/2023] [Accepted: 01/08/2024] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND It is well-known that systemic inflammation plays a crucial role in the pathogenesis and prognosis of acute myocardial infarction (AMI). The systemic immune-inflammation index (SII, platelet × neutrophil/lymphocyte ratio) is a novel index that is used for the characterization of the severity of systemic inflammation. Recent studies have identified the high SII level as an independent predictor of poor outcomes in patients with AMI. We aimed to investigate the prognostic implications of SII in AMI patients with and without diabetes mellitus (DM). METHODS We included 2111 patients with AMI from February 2014 to March 2018. Multivariable Cox regression analyses were performed to estimate the hazard ratios (HRs) and 95% confidence intervals (CIs) of all-cause death and cardiovascular (CV) death. Multiple imputation was used for missing covariates. RESULTS Of 2111 patients (mean age: 65.2 ± 12.2 years, 77.5% were males) analyzed, 789 (37.4%) had DM. Generalized additive model analyses showed that as the SII increased, the C-reactive protein and peak TnT elevated while the LVEF declined, and these associations were similar in patients with and without DM. During a median of 2.5 years of follow-up, 210 all-cause deaths and 154 CV deaths occurred. When treating the SII as a continuous variable, a higher log-transformed SII was significantly associated with increased all-cause mortality (HR: 1.57, 95%CI: 1.02-2.43) and CV mortality (HR: 1.85, 95%CI 1.12-3.05), and such an association was also significant in the diabetics (HRs and 95%CIs for all-cause death and CV death were 2.90 [1.40-6.01] and 3.28 [1.43-7.57], respectively) while not significant in the nondiabetics (Pinteraction for all-cause death and CV death were 0.019 and 0.049, respectively). Additionally, compared to patients with the lowest tertiles of SII, those with the highest tertiles of SII possessed significantly higher all-cause mortality (HR: 1.82, 95%CI 1.19-2.79) and CV mortality (HR: 1.82, 95%CI 1.19-2.79) after multivariable adjustment, and this relationship remained pronounced in the diabetics (HRs and 95%CIs for all-cause death and CV death were 2.00 [1.13-3.55] and 2.09 [1.10-3.98], respectively) but was not observed in the nondiabetics (HRs and 95%CIs for all-cause death and CV death were 1.21 [0.75-1.97] and 1.60 [0.89-2.90], respectively). Our restricted cubic splines analyses indicated a pronounced linear association between SII and mortality only in diabetics. CONCLUSIONS In AMI patients with DM, high SII is an independent predictor of poor survival and may be helpful for patient's risk stratification.
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Affiliation(s)
- Jiachen Luo
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Xiaoming Qin
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Xingxu Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Yiwei Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Fang Yuan
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Wentao Shi
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Baoxin Liu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China
| | - Yidong Wei
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, 301 Middle Yanchang Road, Jingan District, Shanghai, 200072, China.
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Fan Y, Yan Z, Li T, Li A, Fan X, Qi Z, Zhang J. Primordial Drivers of Diabetes Heart Disease: Comprehensive Insights into Insulin Resistance. Diabetes Metab J 2024; 48:19-36. [PMID: 38173376 PMCID: PMC10850268 DOI: 10.4093/dmj.2023.0110] [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: 04/14/2023] [Accepted: 06/28/2023] [Indexed: 01/05/2024] Open
Abstract
Insulin resistance has been regarded as a hallmark of diabetes heart disease (DHD). Numerous studies have shown that insulin resistance can affect blood circulation and myocardium, which indirectly cause cardiac hypertrophy and ventricular remodeling, participating in the pathogenesis of DHD. Meanwhile, hyperinsulinemia, hyperglycemia, and hyperlipidemia associated with insulin resistance can directly impair the metabolism and function of the heart. Targeting insulin resistance is a potential therapeutic strategy for the prevention of DHD. Currently, the role of insulin resistance in the pathogenic development of DHD is still under active research, as the pathological roles involved are complex and not yet fully understood, and the related therapeutic approaches are not well developed. In this review, we describe insulin resistance and add recent advances in the major pathological and physiological changes and underlying mechanisms by which insulin resistance leads to myocardial remodeling and dysfunction in the diabetic heart, including exosomal dysfunction, ferroptosis, and epigenetic factors. In addition, we discuss potential therapeutic approaches to improve insulin resistance and accelerate the development of cardiovascular protection drugs.
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Affiliation(s)
- Yajie Fan
- Department of Cardiovascular, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Department of Cardiovascular, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Zhipeng Yan
- Department of Cardiovascular, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Tingting Li
- Department of Cardiovascular, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Aolin Li
- Department of Cardiovascular, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xinbiao Fan
- Department of Cardiovascular, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhongwen Qi
- Institute of Gerontology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Junping Zhang
- Department of Cardiovascular, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
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Bian X, He J, Zhang R, Yuan S, Dou K. The Combined Effect of Systemic Immune-Inflammation Index and Type 2 Diabetes Mellitus on the Prognosis of Patients Undergoing Percutaneous Coronary Intervention: A Large-Scale Cohort Study. J Inflamm Res 2023; 16:6415-6429. [PMID: 38164165 PMCID: PMC10758317 DOI: 10.2147/jir.s445479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Accepted: 12/12/2023] [Indexed: 01/03/2024] Open
Abstract
Background Chronic low-grade inflammation is the common mechanism of both atherosclerosis and type 2 diabetes mellitus (T2DM), and systemic immune-inflammation index (SII) has been emerged as a novel and simple inflammatory biomarker. However, the association between SII and glycemic metabolism and their synergetic effect on the prognosis of coronary artery disease (CAD) patients remains unclear. Methods A total of 8602 patients hospitalized for percutaneous coronary intervention (PCI) were included. The primary endpoint was major adverse cardiovascular events (MACE), including all-cause death, myocardial infarction (MI), and target vessel revascularization. According to the optimal cut-off value of SII for MACEs, patients were grouped into higher levels of SII (SII-H) and lower levels of SII (SII-L) and further divided by the concomitance of T2DM into four groups: SII-H/T2DM, SII-H/Non-T2DM, SII-L/T2DM, SII-L/Non-T2DM. Results During a median 2.4-year follow-up, 522 MACEs occurred. The optimal cut-off value of SII for MACEs was 502.5. A 1-unit increase of SII (transformed by natural logarithm) was associated with a 29% increase of MACE risks in the T2DM cohort [adjusted hazard ratio (HR): 1.29, 95% confidence interval (CI): 1.03 to 1.61, P = 0.024], while had no effect in the non-T2DM cohort (HR: 1.03, 95% CI: 0.80 to 1.34, P = 0.800). Compared to those in SII-H/T2DM group, patients in SII-H/Non-T2DM, SII-L/T2DM, SII-L/Non-T2DM had significantly decreased risk of MACEs [adjusted HR: 0.77, 95% CI: 0.61 to 0.98, P = 0.036; adjusted HR: 0.66, 95% CI: 0.50 to 0.87, P = 0.003; adjusted HR: 0.58, 95% CI: 0.45 to 0.74, P < 0.001; respectively]. Multivariable Cox regression analysis also indicated the highest risk in T2DM patients with higher levels of SII than others (P for trend < 0.001). Conclusion In this large-scale real-world study, diabetic patients with elevated SII levels were associated with worse clinical outcomes after PCI.
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Affiliation(s)
- Xiaohui Bian
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- State Key Laboratory of Cardiovascular Disease, Beijing, People’s Republic of China
| | - Jining He
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- State Key Laboratory of Cardiovascular Disease, Beijing, People’s Republic of China
| | - Rui Zhang
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- State Key Laboratory of Cardiovascular Disease, Beijing, People’s Republic of China
| | - Sheng Yuan
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- State Key Laboratory of Cardiovascular Disease, Beijing, People’s Republic of China
| | - Kefei Dou
- Cardiometabolic Medicine Center, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, People’s Republic of China
- State Key Laboratory of Cardiovascular Disease, Beijing, People’s Republic of China
- National Clinical Research Center for Cardiovascular Diseases, Beijing, People’s Republic of China
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Basyreva LY, Shmeleva EV, Ivanov VA, Vakhrusheva TV, Panasenko OM, Ostrovsky EM, Gusev SA, Sergienko VI. The Effect of Vitamin D3 on Neutrophil Extracellular Trap Formation in High-Glucose Conditions. Bull Exp Biol Med 2023; 176:137-142. [PMID: 38189871 DOI: 10.1007/s10517-024-05983-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Indexed: 01/09/2024]
Abstract
NETosis, i.e., the formation of neutrophil extracellular traps (NET), and neutrophil autophagy are important elements in the pathogenesis and the development of complications of type 2 diabetes mellitus (T2DM). Therefore, the search of drugs that can regulate the level of NETosis and autophagy in T2DM is relevant. Here we studied an ex vivo NET formation and neutrophil death in whole blood from healthy subjects upon the addition of glucose up to a high concentration of 15 mM or/and the phorbol ester PMA (phorbol-12-myristate-13-acetate). Their individual and combined action caused neutrophil death and an increase in NET content. It can be hypothesized that this resulted from activation of NETosis and autophagy. It was also shown that this activation of NETosis and autophagy is completely prevented by daily intake of 1000 IU vitamin D3 for 14 days. Therefore, vitamin D3 supplementation can be considered as a preventive measure against the development of T2DM complications.
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Affiliation(s)
- L Yu Basyreva
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia.
| | - E V Shmeleva
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - V A Ivanov
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - T V Vakhrusheva
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - O M Panasenko
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - E M Ostrovsky
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - S A Gusev
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
| | - V I Sergienko
- Yu. M. Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine, Federal Medical-Biological Agency of Russia, Moscow, Russia
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Rivera-Concha R, Moya C, León M, Uribe P, Schulz M, Prado A, Taubert A, Hermosilla C, Sánchez R, Zambrano F. Effect of different sperm populations on neutrophils extracellular traps (NETs) formation in cattle. Res Vet Sci 2023; 164:105028. [PMID: 37804665 DOI: 10.1016/j.rvsc.2023.105028] [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: 07/13/2023] [Revised: 09/17/2023] [Accepted: 09/21/2023] [Indexed: 10/09/2023]
Abstract
In cattle, clinical and subclinical inflammation in the bovine female reproductive tract (FRT) significantly reduces fertility. PMN participate in this FRT-associated inflammation by eliminating pathogens by eliciting various defense mechanisms, with the release of neutrophil extracellular traps NETs) being the latest process discovered. Consistently, human-, bovine- and porcine-derived spermatozoa induce release of NETs in exposed PMN of the same species origin, and thereby decreasing sperm motility through NETs-mediated entrapment. The release of NETs in the presence of different sperm sub-populations is evaluated in this work. Cryopreserved bovine sperm were selected and different sperm populations were used: viable sperm, sperm with oxidative stress, capacitated sperm, and sperm with loss of viability. Isolated PMN of dairy cows were co-incubated with these sperm populations for 4 h. Neutrophil elastase (NE) and DNA were detected by fluorescence microscopy analysis. It was noted that exposed bovine PMN released NETs in the presence of sperm. Moreover, sperm-triggered NETosis resulted different phenotypes of NETs, i. e. spread NETs (sprNETs), diffused NETs (diffNETs) and aggregated NETs (aggNETs). Viable/motile spermatozoa induced a higher proportion of NETotic cells at 15, 60 and 120 min in comparison to controls. In conclusion, all bovine sperm populations in co-culture with PMN generated NETs extrusion while viable sperm activated NETotic cells to a greater extent. With this being an early event in the activation of bovine PMN.
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Affiliation(s)
- Rodrigo Rivera-Concha
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; Ph.D. Program in Medical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Claudia Moya
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Marion León
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Pamela Uribe
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; Department of Internal Medicine, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Mabel Schulz
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Aurora Prado
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Anja Taubert
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
| | - Carlos Hermosilla
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
| | - Raúl Sánchez
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
| | - Fabiola Zambrano
- Center of Excellence in Translational Medicine-Scientific and Technological Bioresource Nucleus (CEMT-BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile.
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Islam MM, Takeyama N. Role of Neutrophil Extracellular Traps in Health and Disease Pathophysiology: Recent Insights and Advances. Int J Mol Sci 2023; 24:15805. [PMID: 37958788 PMCID: PMC10649138 DOI: 10.3390/ijms242115805] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Neutrophils are the principal trouper of the innate immune system. Activated neutrophils undergo a noble cell death termed NETosis and release a mesh-like structure called neutrophil extracellular traps (NETs) as a part of their defensive strategy against microbial pathogen attack. This web-like architecture includes a DNA backbone embedded with antimicrobial proteins like myeloperoxidase (MPO), neutrophil elastase (NE), histones and deploys in the entrapment and clearance of encountered pathogens. Thus NETs play an inevitable beneficial role in the host's protection. However, recent accumulated evidence shows that dysregulated and enhanced NET formation has various pathological aspects including the promotion of sepsis, pulmonary, cardiovascular, hepatic, nephrological, thrombotic, autoimmune, pregnancy, and cancer diseases, and the list is increasing gradually. In this review, we summarize the NET-mediated pathophysiology of different diseases and focus on some updated potential therapeutic approaches against NETs.
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Affiliation(s)
- Md Monirul Islam
- Department of Emergency and Critical Care Medicine, Aichi Medical University, Aichi 480-1195, Japan
- Department of Biochemistry and Biotechnology, University of Science and Technology Chittagong (USTC), Chattogram 4202, Bangladesh
| | - Naoshi Takeyama
- Department of Emergency and Critical Care Medicine, Aichi Medical University, Aichi 480-1195, Japan
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Liu C, Yalavarthi S, Tambralli A, Zeng L, Rysenga CE, Alizadeh N, Hudgins L, Liang W, NaveenKumar SK, Shi H, Shelef MA, Atkins KB, Pennathur S, Knight JS. Inhibition of neutrophil extracellular trap formation alleviates vascular dysfunction in type 1 diabetic mice. SCIENCE ADVANCES 2023; 9:eadj1019. [PMID: 37878711 PMCID: PMC10599623 DOI: 10.1126/sciadv.adj1019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/20/2023] [Indexed: 10/27/2023]
Abstract
While neutrophil extracellular traps (NETs) have previously been linked to some diabetes-associated complications, such as dysfunctional wound healing, their potential role in diabetic vascular dysfunction has not been studied. Diabetic Akita mice were crossed with either Elane-/- or Pad4-/- mice to generate NET-deficient diabetic mice. By 24 weeks of age, Akita aortae showed markedly impaired relaxation in response to acetylcholine, indicative of vascular dysfunction. Both Akita-Elane-/- mice and Akita-Pad4-/- mice had reduced levels of circulating NETs and improved acetylcholine-mediated aortic relaxation. Compared with wild-type aortae, the thromboxane metabolite TXB2 was roughly 10-fold higher in both intact and endothelium-denuded aortae of Akita mice. In contrast, Akita-Elane-/- and Akita-Pad4-/- aortae had TXB2 levels similar to wild type. In summary, inhibition of NETosis by two independent strategies prevented the development of vascular dysfunction in diabetic Akita mice. Thromboxane was up-regulated in the vessel walls of NETosis-competent diabetic mice, suggesting a role for neutrophils in driving the production of this vasoconstrictive and atherogenic prostanoid.
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Affiliation(s)
- Chao Liu
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Srilakshmi Yalavarthi
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Ajay Tambralli
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Lixia Zeng
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Christine E. Rysenga
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Nikoo Alizadeh
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Lucas Hudgins
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Wenying Liang
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | | | - Hui Shi
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Department of Rheumatology and Immunology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Miriam A. Shelef
- Division of Rheumatology, Department of Medicine, University of Wisconsin–Madison, Madison, WI, USA
- William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
| | - Kevin B. Atkins
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
| | - Subramaniam Pennathur
- Division of Nephrology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Jason S. Knight
- Division of Rheumatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA
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da Silva NM, Leite NPDM, Carvalho AE, Almeida VDD, Santos ÍKD, Cavalcanti JRLDP, Fernandes TAADM, Nascimento EGCD, Andrade MFD. The Role of Extracellular Traps in HIV Infection. AIDS Res Hum Retroviruses 2023. [PMID: 37772695 DOI: 10.1089/aid.2022.0178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023] Open
Abstract
Human immunodeficiency virus (HIV) infection is still an important public health problem, which justifies the research of new therapies to combat it. Recent studies show that Extracellular Traps (ETs) are cellular mechanisms useful in the capture and destruction of some viruses, such as the HIV. Here, we show that neutrophils from peripheral blood, genital tissues, and placenta are activated when exposed to human immunodeficiency virus type 1 (HIV-1) and release Neutrophil Extracellular Traps (NETs). The NETs can capture, neutralize, and inactivate the virus and, also, protect other target cells from HIV infection, as long as the DNA and other constituents of the NETs remain intact. Further, the review indicates that the immunoprotective role of NETs in the context of HIV-1 infection is a promising finding for the development of new antiviral therapies. It is necessary, however, the development of studies that evaluate the tissue injury that NETs can cause and the biological relationships with other cells to improve them as therapeutic targets.
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Affiliation(s)
- Natanias Macson da Silva
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | | | - Amanda Estevam Carvalho
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Valéria Duarte de Almeida
- Multicenter Graduate Program in Physiological Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Ísis Kelly Dos Santos
- Department of Physical Education, School of Physical Education, University of Rio Grande do Norte State, Mossoro, Brazil
| | - José Rodolfo Lopes de Paiva Cavalcanti
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Physiological Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Thales Allyrio Araújo de Medeiros Fernandes
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Physiological Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Ellany Gurgel Cosme do Nascimento
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Biomedical Sciences, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
| | - Micássio Fernandes de Andrade
- Graduate Program in Health and Society, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Multicenter Graduate Program in Biochemistry and Molecular Biology, School of Health Sciences, University of Rio Grande do Norte State, Mossoro, Brazil
- Department of Health Sciences, School of Biological and Health Sciences, Federal Rural University of the Semi-arid, Mossoro, Brazil
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21
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Sileikaite-Morvaközi I, Hansen WH, Davies MJ, Mandrup-Poulsen T, Hawkins CL. Detrimental Actions of Chlorinated Nucleosides on the Function and Viability of Insulin-Producing Cells. Int J Mol Sci 2023; 24:14585. [PMID: 37834034 PMCID: PMC10572493 DOI: 10.3390/ijms241914585] [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: 07/26/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023] Open
Abstract
Neutrophils are innate immune cells that play a key role in pathogen clearance. They contribute to inflammatory diseases, including diabetes, by releasing pro-inflammatory cytokines, reactive oxygen species, and extracellular traps (NETs). NETs contain a DNA backbone and catalytically active myeloperoxidase (MPO), which produces hypochlorous acid (HOCl). Chlorination of the DNA nucleoside 8-chloro-deoxyguanosine has been reported as an early marker of inflammation in diabetes. In this study, we examined the reactivity of different chlorinated nucleosides, including 5-chloro-(deoxy)cytidine (5ClC, 5CldC), 8-chloro-(deoxy)adenosine (8ClA, 8CldA) and 8-chloro-(deoxy)guanosine (8ClG, 8CldG), with the INS-1E β-cell line. Exposure of INS-1E cells to 5CldC, 8CldA, 8ClA, and 8CldG decreased metabolic activity and intracellular ATP, and, together with 8ClG, induced apoptotic cell death. Exposure to 8ClA, but not the other nucleosides, resulted in sustained endoplasmic reticulum stress, activation of the unfolded protein response, and increased expression of thioredoxin-interacting protein (TXNIP) and heme oxygenase 1 (HO-1). Exposure of INS-1E cells to 5CldC also increased TXNIP and NAD(P)H dehydrogenase quinone 1 (NQO1) expression. In addition, a significant increase in the mRNA expression of NQO1 and GPx4 was seen in INS-1E cells exposed to 8ClG and 8CldA, respectively. However, a significant decrease in intracellular thiols was only observed in INS-1E cells exposed to 8ClG and 8CldG. Finally, a significant decrease in the insulin stimulation index was observed in experiments with all the chlorinated nucleosides, except for 8ClA and 8ClG. Together, these results suggest that increased formation of chlorinated nucleosides during inflammation in diabetes could influence β-cell function and may contribute to disease progression.
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Affiliation(s)
| | | | | | | | - Clare L. Hawkins
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark; (I.S.-M.); (M.J.D.); (T.M.-P.)
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22
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Habibi-Kavashkohie MR, Scorza T, Oubaha M. Senescent Cells: Dual Implications on the Retinal Vascular System. Cells 2023; 12:2341. [PMID: 37830555 PMCID: PMC10571659 DOI: 10.3390/cells12192341] [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: 07/19/2023] [Revised: 09/12/2023] [Accepted: 09/19/2023] [Indexed: 10/14/2023] Open
Abstract
Cellular senescence, a state of permanent cell cycle arrest in response to endogenous and exogenous stimuli, triggers a series of gradual alterations in structure, metabolism, and function, as well as inflammatory gene expression that nurtures a low-grade proinflammatory milieu in human tissue. A growing body of evidence indicates an accumulation of senescent neurons and blood vessels in response to stress and aging in the retina. Prolonged accumulation of senescent cells and long-term activation of stress signaling responses may lead to multiple chronic diseases, tissue dysfunction, and age-related pathologies by exposing neighboring cells to the heightened pathological senescence-associated secretory phenotype (SASP). However, the ultimate impacts of cellular senescence on the retinal vasculopathies and retinal vascular development remain ill-defined. In this review, we first summarize the molecular players and fundamental mechanisms driving cellular senescence, as well as the beneficial implications of senescent cells in driving vital physiological processes such as embryogenesis, wound healing, and tissue regeneration. Then, the dual implications of senescent cells on the growth, hemostasis, and remodeling of retinal blood vessels are described to document how senescent cells contribute to both retinal vascular development and the severity of proliferative retinopathies. Finally, we discuss the two main senotherapeutic strategies-senolytics and senomorphics-that are being considered to safely interfere with the detrimental effects of cellular senescence.
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Affiliation(s)
- Mohammad Reza Habibi-Kavashkohie
- Department of Biological Sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2L 2C4, Canada; (M.R.H.-K.); (T.S.)
- The Center of Excellence in Research on Orphan Diseases, Courtois Foundation (CERMO-FC), Montreal, QC H3G 1E8, Canada
| | - Tatiana Scorza
- Department of Biological Sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2L 2C4, Canada; (M.R.H.-K.); (T.S.)
- The Center of Excellence in Research on Orphan Diseases, Courtois Foundation (CERMO-FC), Montreal, QC H3G 1E8, Canada
| | - Malika Oubaha
- Department of Biological Sciences, Université du Québec à Montréal (UQAM), Montréal, QC H2L 2C4, Canada; (M.R.H.-K.); (T.S.)
- The Center of Excellence in Research on Orphan Diseases, Courtois Foundation (CERMO-FC), Montreal, QC H3G 1E8, Canada
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23
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Alnima T, Meijer RI, Spronk HMH, Warlé M, Cate HT. Diabetes- versus smoking-related thrombo-inflammation in peripheral artery disease. Cardiovasc Diabetol 2023; 22:257. [PMID: 37735399 PMCID: PMC10514957 DOI: 10.1186/s12933-023-01990-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Accepted: 09/11/2023] [Indexed: 09/23/2023] Open
Abstract
Peripheral artery disease (PAD) is a major health problem with increased cardiovascular mortality, morbidity and disabling critical limb threatening ischemia (CLTI) and amputation. Diabetes mellitus (DM) and cigarette smoke are the main risk factors for the development of PAD. Although diabetes related PAD shows an accelerated course with worse outcome regarding complications, mortality and amputations compared with non-diabetic patients, current medical treatment does not make this distinction and includes standard antiplatelet and lipid lowering drugs for all patients with PAD. In this review we discuss the pathophysiologic mechanisms of PAD, with focus on differences in thrombo-inflammatory processes between diabetes-related and smoking-related PAD, and hypothesize on possible mechanisms for the progressive course of PAD in DM. Furthermore, we comment on current medical treatment and speculate on alternative medical drug options for patients with PAD and DM.
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Affiliation(s)
- T Alnima
- Department of Internal Medicine, Section of Vascular Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
- Department of Internal Medicine, Section of Diabetology, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - R I Meijer
- Department of Internal Medicine, Section of Diabetology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - H M H Spronk
- Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center+, Maastricht, The Netherlands
| | - M Warlé
- Department of Vascular Surgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - H Ten Cate
- Thrombosis Expertise Center, Heart and Vascular Center, Maastricht University Medical Center+, Maastricht, The Netherlands
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24
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Brianik CJ, Bouallagui Y, Allam B. Triploid animals, a potential model for ETosis research: Influence of polyploidy on the formation and efficacy of extracellular traps in the eastern oyster. FISH & SHELLFISH IMMUNOLOGY 2023; 140:108992. [PMID: 37567455 DOI: 10.1016/j.fsi.2023.108992] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/04/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Decondensation and the subsequent release of chromatin from specific immune cells in response to inflammatory stimuli is a highly conserved aspect of the innate immune system and leads to the formation of extracellular traps, observable in nearly all forms of multicellular life. This process is known as ETosis, with the release of DNA and its associated antimicrobial proteins physically capturing and neutralizing pathogens following an infection or tissue damage. Despite the universality of this response, data concerning extracellular traps in non-model organisms is limited, with most invertebrate studies doing little more than proving their existence due to difficulties in stimulation and high interindividual variability in trap production. This study provides a novel, simple, and inexpensive method for the consistent stimulation of extracellular traps in eastern oyster (Crassostrea virginica) hemocytes. Using the methods described in this study, we compared how ploidy impacts the rate, size, and efficacy of extracellular traps. Findings demonstrated that hemocyte extracellular traps were potent antimicrobials against both Gram-positive and Gram-negative bacteria. Furthermore, we provide evidence to suggest that agranulocytes may be the primary ETosis effector cells in C. virginica. This study is the first to describe extracellular traps in C. virginica and highlights the possible benefits of using triploid animals to gain a further understanding of ETosis and the factors that regulate its induction and efficacy.
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Affiliation(s)
- Christopher J Brianik
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, 11790, USA
| | - Younes Bouallagui
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, 11790, USA
| | - Bassem Allam
- School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY, 11790, USA.
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25
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Li J, Yin L, Chen S, Li Z, Ding J, Wu J, Yang K, Xu J. The perspectives of NETosis on the progression of obesity and obesity-related diseases: mechanisms and applications. Front Cell Dev Biol 2023; 11:1221361. [PMID: 37649550 PMCID: PMC10465184 DOI: 10.3389/fcell.2023.1221361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/04/2023] [Indexed: 09/01/2023] Open
Abstract
Obesity is a disease commonly associated with urbanization and can also be characterized as a systemic, chronic metabolic condition resulting from an imbalance between energy intake and expenditure. The World Health Organization (WHO) has identified obesity as the most serious chronic disease that is increasingly prevalent in the world population. If left untreated, it can lead to dangerous health issues such as hypertension, hyperglycemia, hyperlipidemia, hyperuricemia, nonalcoholic steatohepatitis, atherosclerosis, and vulnerability to cardiovascular and cerebrovascular events. The specific mechanisms by which obesity affects the development of these diseases can be refined to the effect on immune cells. Existing studies have shown that the development of obesity and its associated diseases is closely related to the balance or lack thereof in the number and function of various immune cells, of which neutrophils are the most abundant immune cells in humans, infiltrating and accumulating in the adipose tissues of obese individuals, whereas NETosis, as a newly discovered type of neutrophil-related cell death, its role in the development of obesity and related diseases is increasingly emphasized. The article reviews the significant role that NETosis plays in the development of obesity and related diseases, such as diabetes and its complications. It discusses the epidemiology and negative impacts of obesity, explains the mechanisms of NETosis, and examines its potential as a targeted drug to treat obesity and associated ailments.
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Affiliation(s)
- Jinyu Li
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, China
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Lijia Yin
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Siyi Chen
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zelin Li
- The First Clinical Medical College of Nanchang University, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jiatong Ding
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jiaqiang Wu
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Kangping Yang
- The Second Clinical Medical College of Nanchang University, Second Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jixiong Xu
- Department of Endocrinology and Metabolism, First Affiliated Hospital of Nanchang University, Nanchang, China
- Jiangxi Clinical Research Center for Endocrine and Metabolic Disease, Nanchang, Jiangxi, China
- Jiangxi Branch of National Clinical Research Center for Metabolic Disease, Nanchang, Jiangxi, China
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26
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Linnemann C, Şahin F, Li N, Pscherer S, Götz F, Histing T, Nussler AK, Ehnert S. Insulin Can Delay Neutrophil Extracellular Trap Formation In Vitro-Implication for Diabetic Wound Care? BIOLOGY 2023; 12:1082. [PMID: 37626968 PMCID: PMC10452400 DOI: 10.3390/biology12081082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/24/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023]
Abstract
Diabetes is a worldwide evolving disease with many associated complications, one of which is delayed or impaired wound healing. Appropriate wound healing strongly relies on the inflammatory reaction directly after injury, which is often altered in diabetic wound healing. After an injury, neutrophils are the first cells to enter the wound site. They have a special defense mechanism, neutrophil extracellular traps (NETs), consisting of released DNA coated with antimicrobial proteins and histones. Despite being a powerful weapon against pathogens, NETs were shown to contribute to impaired wound healing in diabetic mice and are associated with amputations in diabetic foot ulcer patients. The anti-diabetic drugs metformin and liraglutide have already been shown to regulate NET formation. In this study, the effect of insulin was investigated. NET formation after stimulation with PMA (phorbol myristate acetate), LPS (lipopolysaccharide), or calcium ionophore (CI) in the presence/absence of insulin was analyzed. Insulin led to a robust delay of LPS- and PMA-induced NET formation but had no effect on CI-induced NET formation. Mechanistically, insulin induced reactive oxygen species, phosphorylated p38, and ERK, but reduced citrullination of histone H3. Instead, bacterial killing was induced. Insulin might therefore be a new tool for the regulation of NET formation during diabetic wound healing, either in a systemic or topical application.
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Affiliation(s)
- Caren Linnemann
- Siegfried Weller Institute for Trauma Research, BG Unfallklinik Tübingen, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany; (C.L.); (A.K.N.)
| | - Filiz Şahin
- Siegfried Weller Institute for Trauma Research, BG Unfallklinik Tübingen, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany; (C.L.); (A.K.N.)
| | - Ningna Li
- Microbial Genetics, Interfaculty Institute of Microbiology and Infection Medicine, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany
| | - Stefan Pscherer
- Siegfried Weller Institute for Trauma Research, BG Unfallklinik Tübingen, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany; (C.L.); (A.K.N.)
- Department of Internal Medicine III, Sophien- and Hufeland-Hospital, 99425 Weimar, Germany
| | - Friedrich Götz
- Microbial Genetics, Interfaculty Institute of Microbiology and Infection Medicine, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany
| | - Tina Histing
- Siegfried Weller Institute for Trauma Research, BG Unfallklinik Tübingen, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany; (C.L.); (A.K.N.)
| | - Andreas K. Nussler
- Siegfried Weller Institute for Trauma Research, BG Unfallklinik Tübingen, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany; (C.L.); (A.K.N.)
| | - Sabrina Ehnert
- Siegfried Weller Institute for Trauma Research, BG Unfallklinik Tübingen, Eberhard Karls Universität Tuebingen, 72076 Tuebingen, Germany; (C.L.); (A.K.N.)
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27
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Zhu Y, Xia X, He Q, Xiao QA, Wang D, Huang M, Zhang X. Diabetes-associated neutrophil NETosis: pathogenesis and interventional target of diabetic complications. Front Endocrinol (Lausanne) 2023; 14:1202463. [PMID: 37600700 PMCID: PMC10435749 DOI: 10.3389/fendo.2023.1202463] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 07/17/2023] [Indexed: 08/22/2023] Open
Abstract
Neutrophil extracellular traps (NETs) are known as extracellular fibers networks consisting of antimicrobial proteins and decondensated chromatin DNA released by activated neutrophils. NETosis is a NETs-induced neutrophilic cell death which is unique from necrosis or apoptosis. Besides its neutralizing pathogen, NETosis plays a crucial role in diabetes and diabetes-related complications. In patients with diabetes, NETs-releasing products are significantly elevated in blood, and these findings confirm the association of NETosis and diabetic complications, including diabetic wound healing, diabetic retinopathy, and atherosclerosis. This article briefly summarizes the mechanisms of NETosis and discusses its contribution to the pathogenesis of diabetes-related complications and suggests new therapeutic targets by some small molecule compounds.
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Affiliation(s)
- Yuyan Zhu
- College of Basic Medical Science, China Three Gorges University, Yichang, China
- Institute of Infection and Inflammation, China Three Gorges University, Yichang, China
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
| | - Xuan Xia
- College of Basic Medical Science, China Three Gorges University, Yichang, China
- Institute of Infection and Inflammation, China Three Gorges University, Yichang, China
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
- Department of Physiology and Pathophysiology, College of Basic Medical Science, China Three Gorges University, Yichang, China
| | - Qian He
- National Clinical Research Center for Metabolic Diseases, Hunan Provincial Key Laboratory of Metabolic Bone Diseases, Department of Metabolism and Endocrinology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Qing-Ao Xiao
- Department of Interventional Radiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China
- Department of Interventional Radiology, Yichang Central People’s Hospital, Yichang, Hubei, China
| | - Decheng Wang
- College of Basic Medical Science, China Three Gorges University, Yichang, China
- Institute of Infection and Inflammation, China Three Gorges University, Yichang, China
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
| | - Meirong Huang
- College of Basic Medical Science, China Three Gorges University, Yichang, China
- Institute of Infection and Inflammation, China Three Gorges University, Yichang, China
- Hubei Key Laboratory of Tumor Microenvironment and Immunotherapy, China Three Gorges University, Yichang, China
- Department of Physiology and Pathophysiology, College of Basic Medical Science, China Three Gorges University, Yichang, China
| | - Xiaolin Zhang
- Department of Interventional Radiology, The First College of Clinical Medical Science, China Three Gorges University, Yichang, Hubei, China
- Department of Interventional Radiology, Yichang Central People’s Hospital, Yichang, Hubei, China
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28
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Magaña-Guerrero FS, Aguayo-Flores JE, Buentello-Volante B, Zarco-Ávila K, Sánchez-Cisneros P, Castro-Salas I, De la Torre-Galván E, Rodríguez-Loaiza JL, Jiménez-Corona A, Garfias Y. Spontaneous Neutrophil Extracellular Traps Release Are Inflammatory Markers Associated with Hyperglycemia and Renal Failure on Diabetic Retinopathy. Biomedicines 2023; 11:1791. [PMID: 37509431 PMCID: PMC10376331 DOI: 10.3390/biomedicines11071791] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 07/30/2023] Open
Abstract
Diabetic retinopathy (DR) is the major microvascular complication of diabetes and causes vitreous traction and intraretinal hemorrhages leading to retinal detachment and total blindness. The evolution of diabetes is related to exacerbating inflammation caused by hyperglycemia and activation of inflammatory cells. Neutrophils are cells able to release structures of extracellular DNA and proteolytic enzymes called extracellular traps (NETs), which are associated with the persistence of inflammation in chronic pathologies. The purpose of the study was to determine the usefulness of neutrophil traps as indicators of DR progression in patients with type 2 diabetes (T2DM). We performed a case-control study of seventy-four cases classified into five groups (non-proliferative DR, mild, moderate, severe, and proliferative) and fifteen healthy controls. We found correlations between NETs and a diagnostic time of T2DM (r = 0.42; p < 0.0001), fasting glucose (r = 0.29; p < 0.01), glycated hemoglobin (HbA1c) (r = 0.31; p < 0.01), estimated glomerular filtration rate (eGFR) (r = -0.29; p < 0.01), and plasma osmolarity (r = 0.25; p < 0.01). These results suggest that due to NETs being associated with clinical indicators, such as HbA1c and eGFR, and that NETs are also associated with DR, clinical indicators might be explained in part through an NET-mediated inflammation process.
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Affiliation(s)
- Fátima Sofía Magaña-Guerrero
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | - José Eduardo Aguayo-Flores
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | - Beatriz Buentello-Volante
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | - Karla Zarco-Ávila
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | - Paola Sánchez-Cisneros
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | - Ilse Castro-Salas
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | - Enya De la Torre-Galván
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
| | | | - Aida Jiménez-Corona
- Department of Ocular Epidemiology and Visual Health, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
- General Directorate of Epidemiology, Health Secretariat, Mexico City 01480, Mexico
| | - Yonathan Garfias
- Cell and Tissue Biology, Research Unit, Institute of Ophthalmology Conde de Valenciana, Mexico City 06800, Mexico
- Department of Biochemistry, Faculty of Medicine, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico
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29
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Thimmappa PY, Vasishta S, Ganesh K, Nair AS, Joshi MB. Neutrophil (dys)function due to altered immuno-metabolic axis in type 2 diabetes: implications in combating infections. Hum Cell 2023:10.1007/s13577-023-00905-7. [PMID: 37115481 DOI: 10.1007/s13577-023-00905-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 03/31/2023] [Indexed: 04/29/2023]
Abstract
Metabolic and inflammatory pathways are highly interdependent, and both systems are dysregulated in Type 2 diabetes (T2D). T2D is associated with pre-activated inflammatory signaling networks, aberrant cytokine production and increased acute phase reactants which leads to a pro-inflammatory 'feed forward loop'. Nutrient 'excess' conditions in T2D with hyperglycemia, elevated lipids and branched-chain amino acids significantly alter the functions of immune cells including neutrophils. Neutrophils are metabolically active cells and utilizes energy from glycolysis, stored glycogen and β-oxidation while depending on the pentose phosphate pathway for NADPH for performing effector functions such as chemotaxis, phagocytosis and forming extracellular traps. Metabolic changes in T2D result in constitutive activation and impeded acquisition of effector or regulatory activities of neutrophils and render T2D subjects for recurrent infections. Increased flux through the polyol and hexosamine pathways, elevated production of advanced glycation end products (AGEs), and activation of protein kinase C isoforms lead to (a) an enhancement in superoxide generation; (b) the stimulation of inflammatory pathways and subsequently to (c) abnormal host responses. Neutrophil dysfunction diminishes the effectiveness of wound healing, successful tissue regeneration and immune surveillance against offending pathogens. Hence, Metabolic reprogramming in neutrophils determines frequency, severity and duration of infections in T2D. The present review discusses the influence of the altered immuno-metabolic axis on neutrophil dysfunction along with challenges and therapeutic opportunities for clinical management of T2D-associated infections.
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Affiliation(s)
- Pooja Yedehalli Thimmappa
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Planetarium Complex, Manipal, Karnataka, 576104, India
| | - Sampara Vasishta
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Planetarium Complex, Manipal, Karnataka, 576104, India
| | - Kailash Ganesh
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Planetarium Complex, Manipal, Karnataka, 576104, India
| | - Aswathy S Nair
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Planetarium Complex, Manipal, Karnataka, 576104, India
| | - Manjunath B Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Planetarium Complex, Manipal, Karnataka, 576104, India.
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Raja JM, Maturana MA, Kayali S, Khouzam A, Efeovbokhan N. Diabetic foot ulcer: A comprehensive review of pathophysiology and management modalities. World J Clin Cases 2023; 11:1684-1693. [PMID: 36970004 PMCID: PMC10037283 DOI: 10.12998/wjcc.v11.i8.1684] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 01/08/2023] [Accepted: 02/17/2023] [Indexed: 03/07/2023] Open
Abstract
Diabetic foot ulcer (DFU) is a debilitating and severe manifestation of uncontrolled and prolonged diabetes that presents as ulceration, usually located on the plantar aspect of the foot. Approximately 15% of individuals with diabetes will eventually develop DFU, and 14%-24% of them will require amputation of the ulcerated foot due to bone infection or other ulcer-related complications. The pathologic mechanisms underlying DFU are comprise a triad: Neuropathy, vascular insufficiency, and secondary infection due to trauma of the foot. Standard local and invasive care along with novel approaches like stem cell therapy pave the way to reduce morbidity, decrease amputations, and prevent mortality from DFU. In this manuscript, we review the current literature with focus on the pathophysiology, preventive options, and definitive management of DFU.
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Affiliation(s)
- Joel M Raja
- Department of Internal Medicine, University of Tennessee Health Science Center, Memphis, TN 38119, United States
| | - Miguel A Maturana
- Department of Internal Medicine, University of Tennessee Health Science Center, Memphis, TN 38119, United States
| | - Sharif Kayali
- Department of Internal Medicine, University of Tennessee Health Science Center, Memphis, TN 38119, United States
| | - Amir Khouzam
- Department of Internal Medicine, University of Tennessee Health Science Center, Memphis, TN 38119, United States
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Role of Innate Immune Cells in Chronic Diabetic Wounds. J Indian Inst Sci 2023. [DOI: 10.1007/s41745-022-00355-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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Wu TW, Chou CL, Cheng CF, Lu SX, Wu YJ, Wang LY. Associations of genetic markers of diabetes mellitus with carotid atherosclerosis: a community-based case-control study. Cardiovasc Diabetol 2023; 22:51. [PMID: 36894991 PMCID: PMC9999522 DOI: 10.1186/s12933-023-01787-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/01/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Diabetes mellitus (DM) is a well-established determinant of atherosclerosis and cardiovascular diseases (CVD). Recently, genome-wide association studies (GWAS) identified several single nucleotide polymorphism (SNP) significantly correlated with DM. The study aimed to explore the relationships of the top significant DM SNPs with carotid atherosclerosis (CA). METHODS We used a case-control design and randomly selected 309 cases and 439 controls with and without, respectively, carotid plaque (CP) from a community-based cohort. Eight recent GWAS on DM in East Asians reported hundreds of SNPs with genome-wide significance. The study used the top significant DM SNPs, with a p-value < 10-16, as the candidate genetic markers of CA. The independent effects of these DM SNPs on CA were assessed by multivariable logistic regression analyses to control the effects of conventional cardio-metabolic risk factors. RESULTS Multivariable analyses showed that, 9 SNPs, including rs4712524, rs1150777, rs10842993, rs2858980, rs9583907, rs1077476, rs7180016, rs4383154, and rs9937354, showed promising associations with the presence of carotid plaque (CP). Among them, rs9937354, rs10842993, rs7180016, and rs4383154 showed significantly independent effects. The means (SD) of the 9-locus genetic risk score (9-GRS) of CP-positive and -negative subjects were 9.19 (1.53) and 8.62 (1.63), respectively (p < 0.001). The corresponding values of 4-locus GRS (4-GRS) were 4.02 (0.81) and. 3.78 (0.92), respectively (p < 0.001). The multivariable-adjusted odds ratio of having CP for per 1.0 increase in 9-GRS and 4-GRS were 1.30 (95% CI 1.18-1.44; p = 4.7 × 10-7) and 1.47 (95% CI 1.74-9.40; p = 6.1 × 10-5), respectively. The means of multi-locus GRSs of DM patients were similar to those of CP-positive subjects and higher than those of CP-negative or DM-negative subjects. CONCLUSIONS We identified 9 DM SNPs showing promising associations with CP. The multi-locus GRSs may be used as biomarkers for the identification and prediction of high-risks subjects for atherosclerosis and atherosclerotic diseases. Future studies on these specific SNPs and their associated genes may provide valuable information for the preventions of DM and atherosclerosis.
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Affiliation(s)
- Tzu-Wei Wu
- Department of Medicine, MacKay Medical College, No. 46, Sec. 3, Zhongzheng Road, Sanzhi District, New Taipei City, Taiwan
| | - Chao-Liang Chou
- Department of Medicine, MacKay Medical College, No. 46, Sec. 3, Zhongzheng Road, Sanzhi District, New Taipei City, Taiwan.,Department of Neurology, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Chun-Fang Cheng
- Tamsui Health Station, Department of Health, New Taipei City Government, New Taipei City, Taiwan
| | - Shu-Xin Lu
- Department of Neurology, MacKay Memorial Hospital, New Taipei City, Taiwan
| | - Yih-Jer Wu
- Department of Medicine, MacKay Medical College, No. 46, Sec. 3, Zhongzheng Road, Sanzhi District, New Taipei City, Taiwan. .,Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan. .,Cardiovascular Center, Department of Internal Medicine, MacKay Memorial Hospital, Taipei, Taiwan. .,Department of Medical Research, MacKay Memorial Hospital, Taipei, Taiwan.
| | - Li-Yu Wang
- Department of Medicine, MacKay Medical College, No. 46, Sec. 3, Zhongzheng Road, Sanzhi District, New Taipei City, Taiwan.
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Lower Circulating Cell-Free Mitochondrial DNA Is Associated with Heart Failure in Type 2 Diabetes Mellitus Patients. CARDIOGENETICS 2023. [DOI: 10.3390/cardiogenetics13010003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023] Open
Abstract
Cell-free nuclear (cf-nDNA) and mitochondrial (cf-mDNA) DNA are released from damaged cells in type 2 diabetes mellitus (T2DM) patients, contributing to adverse cardiac remodeling, vascular dysfunction, and inflammation. The purpose of this study was to correlate the presence and type of cf-DNAs with HF in T2DM patients. A total of 612 T2DM patients were prescreened by using a local database, and 240 patients (120 non-HF and 120 HF individuals) were ultimately selected. The collection of medical information, including both echocardiography and Doppler imagery, as well as the assessment of biochemistry parameters and the circulating biomarkers, were performed at baseline. The N-terminal brain natriuretic pro-peptide (NT-proBNP) and cf-nDNA/cf-mtDNA levels were measured via an ELISA kit and real-time quantitative PCR tests, respectively. We found that HF patients possessed significantly higher levels of cf-nDNA (9.9 ± 2.5 μmol/L vs. 5.4 ± 2.7 μmol/L; p = 0.04) and lower cf-mtDNA (15.7 ± 3.3 μmol/L vs. 30.4 ± 4.8 μmol/L; p = 0.001) than those without HF. The multivariate log regression showed that the discriminative potency of cf-nDNA >7.6 μmol/L (OR = 1.07; 95% CI = 1.03–1.12; p = 0.01) was higher that the NT-proBNP (odds ratio [OR] = 1.10; 95% confidence interval [CI] = 1.04–1.19; p = 0.001) for HF. In conclusion, we independently established that elevated levels of cf-nDNA, originating from NT-proBNP, were associated with HF in T2DM patients.
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Tong Y, Xin Y, Fu L, Shi J, Sun Y. Excessive neutrophil extracellular trap formation induced by Porphyromonas gingivalis lipopolysaccharide exacerbates inflammatory responses in high glucose microenvironment. Front Cell Infect Microbiol 2023; 13:1108228. [PMID: 36743304 PMCID: PMC9895784 DOI: 10.3389/fcimb.2023.1108228] [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: 11/25/2022] [Accepted: 01/10/2023] [Indexed: 01/22/2023] Open
Abstract
Introduction Neutrophil extracellular trap (NET) is a novel defense strategy of neutrophils and found to be induced by Porphyromonas gingivalis (P. gingivalis) lipopolysaccharide (LPS) or high glucose. The aim of this study was to investigate the roles and mechanisms of NET formation in high glucose inflammatory microenvironment. Methods NETs induced by 1 μg/ml P. gingivalis LPS and/or 25 mM glucose were visualized using a fluorescence microscopy and the levels of extracellular DNA were determined by a microplate reader. The bactericidal efficiency of NETs was assessed by quantifying the survival P. gingivalis in neutrophils. The levels of NLRP3 and IL-1β in THP-1 derived-macrophages, and the expressions of p-PKC βII, p-MEK1/2, p-ERK1/2, ORAI1 and ORAI2 in neutrophils were detected by Western blot. Moreover, levels of intracellular Ca2+ and reactive oxygen species (ROS) in neutrophils were explored by flow cytometry. Results P. gingivalis LPS enhanced the formation of NETs and increased the levels of extracellular DNA in high glucose microenvironment (p < 0.05). Compared with normal glucose inflammatory microenvironment, quantities of extra- and intracellular viable P. gingivalis in neutrophils exposed to NETs induced in high glucose inflammatory one were increased (p < 0.05) and the expressions of NLRP3 and IL-1β were dramatically increased in macrophages co-cultured with NETs from high glucose inflammatory microenvironment (p < 0.05). In addition, levels of ROS, intracellular Ca2+, p-PKC βII, p-MEK1/2, p-ERK1/2, ORAI1 and ORAI2 were increased in neutrophils stimulated with both high glucose and P. gingivalis LPS compared with the single stimulus groups (p < 0.05). Discussion In high glucose inflammatory microenvironment, formation of NETs was enhanced via oxidative stress, which failed to reverse the decreased bactericidal capacity in high glucose microenvironment, and instead aggravated the subsequent inflammatory responses.
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Affiliation(s)
- Yue Tong
- Department of Periodontology, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China,Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China,Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Yue Xin
- Department of Periodontology, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China,Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China,Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Lanqing Fu
- Department of Periodontology, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China,Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China,Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Jia Shi
- Department of Periodontology, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China,Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China,Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China
| | - Ying Sun
- Department of Periodontology, The Affiliated Stomatological Hospital of Nanjing Medical University, Nanjing, China,Jiangsu Province Key Laboratory of Oral Diseases, Nanjing, China,Jiangsu Province Engineering Research Center of Stomatological Translational Medicine, Nanjing, China,*Correspondence: Ying Sun,
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Farhan A, Hassan G, Ali SHL, Yousaf Z, Shafique K, Faisal A, Younis BB, Mirza S. Spontaneous NETosis in diabetes: A role of hyperglycemia mediated ROS and autophagy. Front Med (Lausanne) 2023; 10:1076690. [PMID: 36895726 PMCID: PMC9988915 DOI: 10.3389/fmed.2023.1076690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 01/23/2023] [Indexed: 02/23/2023] Open
Abstract
Type 2-diabetes, particularly poorly controlled diabetes, is a risk factor for several infections such as lower respiratory tract and skin infections. Hyperglycemia, a characteristic downstream effect of poorly controlled diabetes, has been shown to impair the function of immune cells, in particular neutrophils. Several studies have demonstrated that hyperglycemia-mediated priming of NADPH oxidase results in subsequent elevated levels of reactive oxygen species (ROS). In healthy neutrophils, ROS plays an important role in pathogen killing by phagocytosis and by induction of Neutrophil Extracellular Traps (NETs). Given the key role of ROS in autophagy, phagocytosis and NETosis, the relationship between these pathways and the role of diabetes in the modulation of these pathways has not been explored previously. Therefore, our study aimed to understand the relationship between autophagy, phagocytosis and NETosis in diabetes. We hypothesized that hyperglycemia-associated oxidative stress alters the balance between phagocytosis and NETosis by modulating autophagy. Using whole blood samples from individuals with and without type 2-diabetes (in the presence and absence of hyperglycemia), we demonstrated that (i) hyperglycemia results in elevated levels of ROS in neutrophils from those with diabetes, (ii) elevated levels of ROS increase LCIII (a marker for autophagy) and downstream NETosis. (iii) Diabetes was also found to be associated with low levels of phagocytosis and phagocytic killing of S. pneumoniae. (iv) Blocking either NADPH oxidase or cellular pathways upstream of autophagy led to a significant reduction in NETosis. This study is the first to demonstrate the role of ROS in altering NETosis and phagocytosis by modulating autophagy in type 2-diabetes. GRAPHICAL ABSTRACT.
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Affiliation(s)
- Anam Farhan
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Ghulam Hassan
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Sheikha Hina Liaqat Ali
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Zainab Yousaf
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Kandeel Shafique
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Amir Faisal
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
| | - Bilal Bin Younis
- Sakina Institute of Diabetes and Endocrinology Research (SiDER), Shalamar Hospital, Lahore, Pakistan
| | - Shaper Mirza
- Department of Life Sciences, Syed Babar Ali School of Science and Engineering, Lahore University of Management Sciences, Lahore, Pakistan
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ZHANG YU, ZHOU XI, ZHANG CHUNYAN, LAI DENGNI, LIU DONGBO, WU YANYANG. Vitamin B3 inhibits apoptosis and promotes autophagy of islet β cells under high glucose stress. BIOCELL 2023. [DOI: 10.32604/biocell.2023.026429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
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Zhao Z, Pan Z, Zhang S, Ma G, Zhang W, Song J, Wang Y, Kong L, Du G. Neutrophil extracellular traps: A novel target for the treatment of stroke. Pharmacol Ther 2023; 241:108328. [PMID: 36481433 DOI: 10.1016/j.pharmthera.2022.108328] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 11/30/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
Stroke is a threatening cerebrovascular disease caused by thrombus with high morbidity and mortality rates. Neutrophils are the first to be recruited in the brain after stroke, which aggravate brain injury through multiple mechanisms. Neutrophil extracellular traps (NETs), as a novel regulatory mechanism of neutrophils, can trap bacteria and secret antimicrobial molecules, thereby degrading pathogenic factors and killing bacteria. However, NETs also exacerbate certain non-infectious diseases by activating autoimmune or inflammatory responses. NETs have been found to play important roles in the pathological process of stroke in recent years. In this review, the mechanisms of NETs formation, the physiological roles of NETs, and the dynamic changes of NETs after stroke are summarized. NETs participate in stroke through various mechanisms. NETs promote the coagulation cascade and interact with platelets to induce thrombosis. tPA induces the degranulation of neutrophils to form NETs, leading to hemorrhagic transformation and thrombolytic resistance. NETs aggravate stroke by mediating inflammation, atherosclerosis and vascular injury. In addition, the regulation of NETs in stroke, the potential of NETs as biomarker and the treatment of stroke targeting NETs are discussed. The increasing evidences suggest that NETs may be a potential target for stroke treatment. Inhibition of NETs formation or promotion of NETs degradation plays protective effects in stroke. However, how to avoid the adverse effects of NETs-targeted therapy deserves further study. In summary, this review provides a reference for the pathogenesis, drug targets, biomarkers and drug development of NETs in stroke.
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Affiliation(s)
- Ziyuan Zhao
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Zirong Pan
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Sen Zhang
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Guodong Ma
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Wen Zhang
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Junke Song
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Yuehua Wang
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China
| | - Linglei Kong
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China.
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100050, China.
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Zheng F, Ma L, Li X, Wang Z, Gao R, Peng C, Kang B, Wang Y, Luo T, Wu J, Yang Y, Gong L, Li Q, Yang S, Hu J. Neutrophil Extracellular Traps Induce Glomerular Endothelial Cell Dysfunction and Pyroptosis in Diabetic Kidney Disease. Diabetes 2022; 71:2739-2750. [PMID: 36095260 DOI: 10.2337/db22-0153] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 09/08/2022] [Indexed: 01/11/2023]
Abstract
Diabetic kidney disease (DKD) is the leading cause of end-stage renal disease. Neutrophil extracellular traps (NETs) are a network structure composed of loose chromatin and embedded with multiple proteins. Here, we observed increased NETs deposition in the glomeruli of DKD patients and diabetic mice (streptozotocin-induced or db/db mice). After NETs were degraded with DNase I, diabetic mice exhibited attenuated glomerulopathy and glomerular endothelial cells (GECs) injury. We also observed alleviated glomerulopathy and GECs injury in peptidylarginine deiminase 4-knockout mice with streptozotocin-induced diabetes. In vitro, NETs-induced GECs pyroptosis was characterized by pore formation in the cell membrane, dysregulation of multiple genes involved in cell membrane function, and increased expression of pyroptosis-related proteins. Strengthening the GECs surface charge by oleylamine significantly inhibited NETs-induced GECs pyroptosis. These findings suggest that the GECs charge-related pyroptosis is involved in DKD progression, which is promoted by NETs.
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Affiliation(s)
- Fengfan Zheng
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Linqiang Ma
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xuan Li
- Department of Clinical Nutrition, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhihong Wang
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Rufei Gao
- School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Chuan Peng
- The Chongqing Key Laboratory of Translational Medicine in Major Metabolic Diseases, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Bing Kang
- Department of Clinical Nutrition, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yue Wang
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Ting Luo
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jinshan Wu
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yi Yang
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Lilin Gong
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Qifu Li
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shumin Yang
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jinbo Hu
- Department of Endocrinology, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Kovoor E, Chauhan SK, Hajrasouliha A. Role of inflammatory cells in pathophysiology and management of diabetic retinopathy. Surv Ophthalmol 2022; 67:1563-1573. [PMID: 35914582 PMCID: PMC11082823 DOI: 10.1016/j.survophthal.2022.07.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 07/18/2022] [Accepted: 07/25/2022] [Indexed: 02/05/2023]
Abstract
Diabetic retinopathy (DR) is a sight-threatening complication of diabetes mellitus. Several inflammatory cells and proteins, including macrophages and microglia, cytokines, and vascular endothelial growth factors, are found to play a significant role in the development and progression of DR. Inflammatory cells play a significant role in the earliest changes seen in DR including the breakdown of the blood retinal barrier leading to leakage of blood into the retina. They also have an important role in the pathogenesis of more advanced stage of proliferative diabetic retinopathy, leading to neovascularization, vitreous hemorrhage, and tractional retinal detachment. In this review, we examine the function of numerous inflammatory cells involved in the pathogenesis, progression, and role as a potential therapeutic target in DR. Additionally, we explore the role of inflammation following treatment of DR.
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Affiliation(s)
- Elias Kovoor
- Carver College of Medicine, University of Iowa, Iowa City, IA, USA
| | - Sunil K Chauhan
- Schepens Eye Institute, Harvard Medical School, Boston, MA, USA
| | - Amir Hajrasouliha
- Department of Ophthalmology, Indiana University School of Medicine, Indianapolis, IN, USA.
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Girard D, Vandiedonck C. How dysregulation of the immune system promotes diabetes mellitus and cardiovascular risk complications. Front Cardiovasc Med 2022; 9:991716. [PMID: 36247456 PMCID: PMC9556991 DOI: 10.3389/fcvm.2022.991716] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 08/30/2022] [Indexed: 12/15/2022] Open
Abstract
Diabetes mellitus (DM) is a chronic metabolic disorder characterized by persistent hyperglycemia due to insulin resistance or failure to produce insulin. Patients with DM develop microvascular complications that include chronic kidney disease and retinopathy, and macrovascular complications that mainly consist in an accelerated and more severe atherosclerosis compared to the general population, increasing the risk of cardiovascular (CV) events, such as stroke or myocardial infarction by 2- to 4-fold. DM is commonly associated with a low-grade chronic inflammation that is a known causal factor in its development and its complications. Moreover, it is now well-established that inflammation and immune cells play a major role in both atherosclerosis genesis and progression, as well as in CV event occurrence. In this review, after a brief presentation of DM physiopathology and its macrovascular complications, we will describe the immune system dysregulation present in patients with type 1 or type 2 diabetes and discuss its role in DM cardiovascular complications development. More specifically, we will review the metabolic changes and aberrant activation that occur in the immune cells driving the chronic inflammation through cytokine and chemokine secretion, thus promoting atherosclerosis onset and progression in a DM context. Finally, we will discuss how genetics and recent systemic approaches bring new insights into the mechanisms behind these inflammatory dysregulations and pave the way toward precision medicine.
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Affiliation(s)
- Diane Girard
- Université Paris Cité, INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker Enfants Malades, IMMEDIAB Laboratory, Paris, France
- Université Paris Cité, Institut Hors-Mur du Diabète, Faculté de Santé, Paris, France
| | - Claire Vandiedonck
- Université Paris Cité, INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker Enfants Malades, IMMEDIAB Laboratory, Paris, France
- Université Paris Cité, Institut Hors-Mur du Diabète, Faculté de Santé, Paris, France
- *Correspondence: Claire Vandiedonck
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Deep Insight of the Pathophysiology of Gestational Diabetes Mellitus. Cells 2022; 11:cells11172672. [PMID: 36078079 PMCID: PMC9455072 DOI: 10.3390/cells11172672] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 12/19/2022] Open
Abstract
Diabetes mellitus is a severe metabolic disorder, which consistently requires medical care and self-management to restrict complications, such as obesity, kidney damage and cardiovascular diseases. The subtype gestational diabetes mellitus (GDM) occurs during pregnancy, which severely affects both the mother and the growing foetus. Obesity, uncontrolled weight gain and advanced gestational age are the prominent risk factors for GDM, which lead to high rate of perinatal mortality and morbidity. Zn in-depth understanding of the molecular mechanism involved in GDM will help researchers to design drugs for the optimal management of the condition without affecting the mother and foetus. This review article is focused on the molecular mechanism involved in the pathophysiology of GDM and the probable biomarkers, which can be helpful for the early diagnosis of the condition. The early diagnosis of the metabolic disorder, most preferably in first trimester of pregnancy, will lead to its effective long-term management, reducing foetal developmental complications and mortality along with safety measures for the mother.
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Shafqat A, Abdul Rab S, Ammar O, Al Salameh S, Alkhudairi A, Kashir J, Alkattan K, Yaqinuddin A. Emerging role of neutrophil extracellular traps in the complications of diabetes mellitus. Front Med (Lausanne) 2022; 9:995993. [PMID: 36082273 PMCID: PMC9445264 DOI: 10.3389/fmed.2022.995993] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Accepted: 08/05/2022] [Indexed: 11/13/2022] Open
Abstract
Immune dysfunction is widely regarded as one of the central tenants underpinning the pathophysiology of diabetes mellitus (DM) and its complications. When discussing immunity, the role of neutrophils must be accounted for: neutrophils are the most abundant of the circulating immune cells and are the first to be recruited to sites of inflammation, where they contribute to host defense via phagocytosis, degranulation, and extrusion of neutrophil extracellular traps (NETs). NETs are composed of DNA associated with nuclear and cytosolic neutrophil proteins. Although originally reported as an antimicrobial strategy to prevent microbial dissemination, a growing body of evidence has implicated NETs in the pathophysiology of various autoimmune and metabolic disorders. In these disorders, NETs propagate a pathologic inflammatory response with consequent tissue injury and thrombosis. Many diabetic complications—such as stroke, retinopathy, impaired wound healing, and coronary artery disease—involve these mechanisms. Therefore, in this review, we discuss laboratory and clinical data informing our understanding of the role of NETs in the development of these complications. NET markers, including myeloperoxidase, citrullinated histone H3, neutrophil elastase, and cell-free double-stranded DNA, can easily be measured in serum or be detected via immunohistochemical/immunocytochemical staining of tissue specimens. Therefore, NET constituents potentially constitute reliable biomarkers for use in the management of diabetic patients. However, no NET-targeting drug is currently approved for the treatment of diabetic complications; a candidate drug will require the outcomes of well-designed, robust clinical trials assessing whether NET inhibition can benefit patients in terms of morbidity, quality of life, health expenditures, and mortality. Therefore, much work remains to be done in translating these encouraging pieces of data into clinical trials for NET-targeting medications to be used in the clinic.
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Affiliation(s)
- Areez Shafqat
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
- *Correspondence: Areez Shafqat
| | | | - Osama Ammar
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | | | - Anas Alkhudairi
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Junaid Kashir
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
- Center of Comparative Medicine, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Khaled Alkattan
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
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Conejeros I, López-Osorio S, Zhou E, Velásquez ZD, Del Río MC, Burgos RA, Alarcón P, Chaparro-Gutiérrez JJ, Hermosilla C, Taubert A. Glycolysis, monocarboxylate transport, and purinergic signaling are key events in Eimeria bovis-induced NETosis. Front Immunol 2022; 13:842482. [PMID: 36032127 PMCID: PMC9403323 DOI: 10.3389/fimmu.2022.842482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 07/14/2022] [Indexed: 12/15/2022] Open
Abstract
The protozoan parasite Eimeria bovis is the causative agent of bovine coccidiosis, an enteric disease of global importance that significantly affects cattle productivity. Previous studies showed that bovine NETosis—an important early host innate effector mechanism of polymorphonuclear neutrophil (PMN)—is elicited by E. bovis stages. So far, the metabolic requirements of E. bovis-triggered NET formation are unknown. We here studied early glycolytic and mitochondrial responses of PMN as well as the role of pH, distinct metabolic pathways, P2 receptor-mediated purinergic signaling, and monocarboxylate transporters 1 and 2 (MCT1, MCT2) in E. bovis sporozoite-induced NET formation. Seahorse-based experiments revealed a rapid induction of both neutrophil oxygen consumption rate (OCR) and early glycolytic responses, thereby reflecting immediate PMN activation and metabolic changes upon confrontation with sporozoites. The impact of these metabolic changes on NET formation was studied via chemical inhibition experiments targeting glycolysis and energy generation by the use of 2-fluor-2-deoxy-D-glucose (FDG), 6-diazo-5-oxo-L-norleucin (DON), sodium dichloroacetate (DCA), oxythiamine (OT), sodium oxamate (OXA), and oligomycin A (OmA) to block glycolysis, glutaminolysis, pyruvate dehydrogenase kinase, pyruvate dehydrogenase, lactate dehydrogenase, and mitochondrial ATP-synthase, respectively. Overall, sporozoite-induced NET formation was significantly diminished via PMN pretreatments with OmA and OXA, thereby indicating a key role of ATP- and lactate-mediated metabolic pathways. Consequently, we additionally studied the effects of extracellular pH, MCT1, MCT2, and purinergic receptor inhibitors (AR-C141900, AR-C155858, theobromine, and NF449, respectively). Pretreatment with the latter inhibitors led to blockage of sporozoite-triggered DNA release from exposed bovine PMN. This report provides first evidence on the pivotal role of carbohydrate-related metabolic pathways and purinergic receptors being involved in E. bovis sporozoite-induced NETosis.
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Affiliation(s)
- Iván Conejeros
- Institute of Parasitology, Justus -Liebig University Giessen, Giessen, Germany
- *Correspondence: Iván Conejeros,
| | - Sara López-Osorio
- Institute of Parasitology, Justus -Liebig University Giessen, Giessen, Germany
- CIBAV Research Group, Facultad de Ciencias Agrarias, Universidad de Antioquia (UdeA), Medellín, Colombia
| | - Ershun Zhou
- Institute of Parasitology, Justus -Liebig University Giessen, Giessen, Germany
- College of Life Sciences and Engineering, University of Foshan, Foshan, China
| | - Zahady D. Velásquez
- Institute of Parasitology, Justus -Liebig University Giessen, Giessen, Germany
| | - María Cristina Del Río
- Department of Animal Pathology, Faculty of Veterinary Medicine, Universidad de Las Palmas de Gran Canaria, Las Palmas, Spain
| | - Rafael Agustín Burgos
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | - Pablo Alarcón
- Laboratory of Inflammation Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology and Morphophysiology, Universidad Austral de Chile, Valdivia, Chile
| | | | - Carlos Hermosilla
- Institute of Parasitology, Justus -Liebig University Giessen, Giessen, Germany
| | - Anja Taubert
- Institute of Parasitology, Justus -Liebig University Giessen, Giessen, Germany
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Neutrophils and Neutrophil Extracellular Traps in Cardiovascular Disease: An Overview and Potential Therapeutic Approaches. Biomedicines 2022; 10:biomedicines10081850. [PMID: 36009397 PMCID: PMC9405087 DOI: 10.3390/biomedicines10081850] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/18/2022] [Accepted: 07/23/2022] [Indexed: 11/17/2022] Open
Abstract
Recent advances in pharmacotherapy have markedly improved the prognosis of cardiovascular disease (CVD) but have not completely conquered it. Therapies targeting the NOD-like receptor family pyrin domain containing 3 inflammasome and its downstream cytokines have proven effective in the secondary prevention of cardiovascular events, suggesting that inflammation is a target for treating residual risk in CVD. Neutrophil-induced inflammation has long been recognized as important in the pathogenesis of CVD. Circadian rhythm-related and disease-specific microenvironment changes give rise to neutrophil diversity. Neutrophils are primed by various stimuli, such as chemokines, cytokines, and damage-related molecular patterns, and the activated neutrophils contribute to the inflammatory response in CVD through degranulation, phagocytosis, reactive oxygen species generation, and the release of neutrophil extracellular traps (NETs). In particular, NETs promote immunothrombosis through the interaction with vascular endothelial cells and platelets and are implicated in the development of various types of CVD, such as acute coronary syndrome, deep vein thrombosis, and heart failure. NETs are promising candidates for anti-inflammatory therapy in CVD, and their efficacy has already been demonstrated in various animal models of the disease; however, they have yet to be clinically applied in humans. This narrative review discusses the diversity and complexity of neutrophils in the trajectory of CVD, the therapeutic potential of targeting NETs, and the related clinical issues.
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Zhong H, Liang H, Yan Y, Chen L, Zhao T, Liu L, Chen Y. Nucleic Acid-Scavenging Hydrogels Accelerate Diabetic Wound Healing. Biomacromolecules 2022; 23:3396-3406. [PMID: 35786877 DOI: 10.1021/acs.biomac.2c00526] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Chronic inflammation is a typical feature and a major impediment in refractory diabetic foot ulcer (DFU). High levels of extracellular cell-free nucleic acid (cfDNA) have recently been known to play a critical role in the cause of inflammation. Herein, we fabricated polyacrylamide-based cationic hydrogels and topically applied them to the ulcer of a diabetic rat model. The cfDNA level in the wound area was significantly reduced after hydrogel adsorption, and the level of inflammation was eliminated. In turn, the wound closure was significantly promoted without introducing systemic toxicity. Cationic hydrogels represent an effective material to combat uncontrolled inflammation in DFU.
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Affiliation(s)
- Hai Zhong
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510006, China
| | - Huiyi Liang
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510006, China
| | - Yanzi Yan
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510006, China
| | - Lei Chen
- Department of Burns, First Affiliated Hospital of Sun Yat-sen University, Guangzhou 510080, China
| | - Tianyu Zhao
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510006, China
| | - Lixin Liu
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510006, China
| | - Yongming Chen
- School of Materials Science and Engineering, Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, Sun Yat-sen University, Guangzhou 510006, China
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Role of Inflammasomes in Keloids and Hypertrophic Scars-Lessons Learned from Chronic Diabetic Wounds and Skin Fibrosis. Int J Mol Sci 2022; 23:ijms23126820. [PMID: 35743263 PMCID: PMC9223684 DOI: 10.3390/ijms23126820] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 02/06/2023] Open
Abstract
Keloids and hypertrophic scars are pathological cutaneous scars. They arise from excessive wound healing, which induces chronic dermal inflammation and results in overwhelming fibroblast production of extracellular matrix. Their etiology is unclear. Inflammasomes are multiprotein complexes that are important in proinflammatory innate-immune system responses. We asked whether inflammasomes participate in pathological scarring by examining the literature on scarring, diabetic wounds (also characterized by chronic inflammation), and systemic sclerosis (also marked by fibrosis). Pathological scars are predominantly populated by anti-inflammatory M2 macrophages and recent literature hints that this could be driven by non-canonical inflammasome signaling. Diabetic-wound healing associates with inflammasome activation in immune (macrophages) and non-immune (keratinocytes) cells. Fibrotic conditions associate with inflammasome activation and inflammasome-induced transition of epithelial cells/endothelial cells/macrophages into myofibroblasts that deposit excessive extracellular matrix. Studies suggest that mechanical stimuli activate inflammasomes via the cytoskeleton and that mechanotransduction-inflammasome crosstalk is involved in fibrosis. Further research should examine (i) the roles that various inflammasome types in macrophages, (myo)fibroblasts, and other cell types play in keloid development and (ii) how mechanical stimuli interact with inflammasomes and thereby drive scar growth. Such research is likely to significantly advance our understanding of pathological scarring and aid the development of new therapeutic strategies.
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Evaluation of peripheral blood polymorphonuclear cell functions after an oral carbohydrate overload in obese and insulin dysregulated horses. Vet Immunol Immunopathol 2022; 250:110455. [PMID: 35716440 DOI: 10.1016/j.vetimm.2022.110455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 05/11/2022] [Accepted: 06/08/2022] [Indexed: 11/20/2022]
Abstract
Obesity and insulin dysregulation (ID) are increasingly prevalent conditions in equid populations worldwide. Immune impairment is well described in humans with metabolic dysfunction and is reported but still incompletely understood in horses. This study evaluated the effect of acute induced transient hyperglycemia on apoptosis, phagocytosis and oxidative burst activity of peripheral blood polymorphonuclear cells (PMN) of lean and obese adult horses with or without insulin dysregulation. Seventeen adult horses were allocated into three groups based on their body condition score (BCS) and metabolic status: lean-insulin sensitive (lean-IS), obese-insulin sensitive (obese-IS) and obese-insulin dysregulated (obese-ID). ID was determined by insulin tolerance testing (ITT). Blood glucose elevation was induced through an infeed-oral glucose test (in-feed OGT), and all assessments of PMN functions (apoptosis, phagocytosis and oxidative burst) were done in vitro after isolation from peripheral blood before and 120 min after carbohydrate overload. Results were analyzed using a repeated measures linear mixed model with significance defined at P < 0.05. No differences in apoptosis were observed between experimental groups at any time point. Phagocytic capacity was significantly lower at baseline in the obese-ID group but increased in response to glucose administration when compared to the other two groups. Basal reactive oxygen species production in the obese-IS group differed significantly from the lean-IS and obese-ID groups and decreased significantly in response to glucose administration. Results from this study showed that both metabolic status itself, and oral glucose administration, seem to be factors that alter PMN functionality in horses, specifically phagocytosis and oxidative burst.
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Neutrophils Actively Contribute to Obesity-Associated Inflammation and Pathological Complications. Cells 2022; 11:cells11121883. [PMID: 35741012 PMCID: PMC9221045 DOI: 10.3390/cells11121883] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/02/2022] [Accepted: 06/08/2022] [Indexed: 02/01/2023] Open
Abstract
Obesity is characterized by an increase in body weight associated with an exaggerated enlargement of the adipose tissue. Obesity has serious negative effects because it is associated with multiple pathological complications such as type 2 diabetes mellitus, cardiovascular diseases, cancer, and COVID-19. Nowadays, 39% of the world population is obese or overweight, making obesity the 21st century epidemic. Obesity is also characterized by a mild, chronic, systemic inflammation. Accumulation of fat in adipose tissue causes stress and malfunction of adipocytes, which then initiate inflammation. Next, adipose tissue is infiltrated by cells of the innate immune system. Recently, it has become evident that neutrophils, the most abundant leukocytes in blood, are the first immune cells infiltrating the adipose tissue. Neutrophils then get activated and release inflammatory factors that recruit macrophages and other immune cells. These immune cells, in turn, perpetuate the inflammation state by producing cytokines and chemokines that can reach other parts of the body, creating a systemic inflammatory condition. In this review, we described the recent findings on the role of neutrophils during obesity and the initiation of inflammation. In addition, we discuss the involvement of neutrophils in the generation of obesity-related complications using diabetes as a prime example.
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Liu G, Ren X, Li Y, Li H. Midkine promotes kidney injury in diabetic kidney disease by increasing neutrophil extracellular traps formation. ANNALS OF TRANSLATIONAL MEDICINE 2022; 10:693. [PMID: 35845498 PMCID: PMC9279803 DOI: 10.21037/atm-22-2382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/31/2022] [Indexed: 12/02/2022]
Abstract
Background We sought to investigate the role of midkine (MK) on neutrophil extracellular trap formation (NETosis) and diabetic kidney disease (DKD) progression. Methods The expression of MK and NETosis in the renal tissue of DKD patients was examined by immunohistochemistry and immunofluorescence, respectively. Neutrophils extracted from mouse bone marrow by gradient centrifugation were treated with MK for this in-vitro study. A mouse diabetes model was induced by a high-fat diet combined with an intraperitoneal injection of streptozocin (STZ). Antisense oligodeoxynucleotide (ODN) for MK inhibition was administered via tail vein injection. Results We found that the expression of MK was increased in the kidney tissue of DKD patients. Additionally, a greater number of neutrophils were primed toward NETosis in the kidney tissue of DKD patients, which was manifested by the increased expression of NETosis biomarkers citrullinated histone H3 (H3Cit) and myeloperoxidase (MPO). In vitro, MK treatment concentration-dependently increased neutrophil proliferation (cell counting kit-8). Further, western blot and enzyme-linked immunosorbent assays showed that MK (100 ng/mL) significantly promoted NETosis and the expression of inflammatory factors interleukin (IL)-1 and IL-6 secretion in high-glucose treated neutrophils. In the mouse diabetes model, MK promoted the pathological damage and fibrosis of kidney tissue, as demonstrated by the reversion of the pathological damage and fibrosis by the MK antisense ODN [diabetes mellitus (DM) + MK – ODN] treatment. Additionally, the inhibition of MK reduced the formation of NETs. Conclusions MK promotes DKD progression by increasing NETosis.
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Affiliation(s)
- Gaohong Liu
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.,Department of Nephrology, Shanxi Provincial People's Hospital, Taiyuan, China
| | - Xiaojun Ren
- Department of Nephrology, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Yousong Li
- Department of Traditional Chinese Medicine, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, China
| | - Han Li
- Department of Nephrology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China
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Thimmappa PY, Nair AS, Najar MA, Mohanty V, Shastry S, Prasad TSK, Joshi MB. Quantitative phosphoproteomics reveals diverse stimuli activate distinct signaling pathways during neutrophil activation. Cell Tissue Res 2022; 389:241-257. [PMID: 35622142 PMCID: PMC9287233 DOI: 10.1007/s00441-022-03636-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 05/11/2022] [Indexed: 12/19/2022]
Abstract
Neutrophils display functional heterogeneity upon responding diversely to physiological and pathological stimulations. During type 2 diabetes (T2D), hyperglycemia constitutively activates neutrophils, leading to reduced response to infections and on the other hand, elevated metabolic intermediates such as homocysteine induce bidirectional activation of platelets and neutrophils leading to thrombosis. Hence, in the context of T2D-associated complications, we examined the influence of high glucose, homocysteine, and LPS representing effector molecules of hyperglycemia, thrombosis, and infection, respectively, on human neutrophil activation to identify distinct signaling pathways by quantitative phosphoproteomics approach. High glucose activated C-Jun-N-Terminal Kinase, NTRK1, SYK, and PRKACA kinases associated with Rho GTPase signaling and phagocytosis, whereas LPS induced AKT1, SRPK2, CSNK2A1, and TTN kinases involved in cytokine signaling and inflammatory response. Homocysteine treatment led to activatation of LRRK2, FGR, MAPK3, and PRKCD kinases which are associated with neutrophil degranulation and cytoskeletal remodeling. Diverse inducers differentially modulated phosphorylation of proteins associated with neutrophil functions such as oxidative burst, degranulation, extracellular traps, and phagocytosis. Further validation of phosphoproteomics data on selected kinases revealed neutrophils pre-cultured under high glucose showed impeded response to LPS to phosphorylate p-ERK1/2Thr202/Tyr204, p-AKTSer473, and C-Jun-N-Terminal KinaseSer63 kinases. Our study provides novel phosphoproteome signatures that may be explored to understand neutrophil biology in T2D-associated complications.
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Affiliation(s)
- Pooja Yedehalli Thimmappa
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Aswathy S Nair
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Mohd Altaf Najar
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Mangalore, 575020, India
| | - Varshasnatha Mohanty
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to Be University), Mangalore, 575020, India
| | - Shamee Shastry
- Department of Immunohematology and Blood Transfusion, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, 576104, India
| | | | - Manjunath B Joshi
- Department of Ageing Research, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal, 576104, India.
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