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Jang Y, Kim T, Choi Y, Ahn KH, Kim JH, Seong H, Kim YJ, Kim SW, Choi JY, Kim HY, Song JY, Choi HJ, Kim SI, Sohn JW, Chin B, Choi BY, Park B. Association between obesity and cancer risk in adults with HIV in Korea. AIDS 2024; 38:1386-1394. [PMID: 38597513 PMCID: PMC11216375 DOI: 10.1097/qad.0000000000003904] [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: 12/10/2023] [Revised: 02/21/2024] [Accepted: 02/29/2024] [Indexed: 04/11/2024]
Abstract
INTRODUCTION This study aimed to investigate the association between obesity and cancer risk as well as site-specific cancer risks in adults with HIV using a nationwide health screening database in Korea. METHODS Of the 16,671 adults with a new diagnosis of HIV from 2004 to 2020, 456 incident cancer cases and 1814 individually matched controls by sex, year of birth, year of HIV diagnosis, and follow-up duration (1 : 4 ratio) were included in this nested case-control study. The association between obesity (BMI ≥25 kg/m 2 ) and cancer risks was estimated and presented as odds ratios (ORs) and 95% confidence intervals (95% CIs). RESULTS Of the 456 cancer incident cases, there were 146 AIDS-defining cancer cases and 310 non-AIDS-defining cancer cases. Compared with nonobese adults with HIV, obese adults with HIV were at higher risk of non-AIDS-defining cancer (OR = 1.478, 95% CI = 1.118-1.955). Otherwise, the overall risk of AIDS-defining cancer (OR = 0.816, 95% CI = 0.520-1.279) and each type of AIDS-defining cancer (Kaposi sarcoma and non-Hodgkin's lymphoma) were not high in obese adults with HIV. Of the specific types of non-AIDS-defining cancers, obesity was associated with an increased risk of colorectal cancer (OR = 3.090, 95% CI = 1.110-8.604) and liver, bile duct, and pancreatic cancers (OR = 2.532, 95% CI = 1.141-5.617). CONCLUSION Obesity, which is one of the important health concerns in HIV management, was associated with an increased risk of non-AIDS-defining cancer but not AIDS-defining cancer.
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Affiliation(s)
- Yoonyoung Jang
- Department of Preventive Medicine, Hanyang University College of Medicine
- Department of Agricultural Economics and Rural Development, Seoul National University
| | - Taehwa Kim
- Department of Preventive Medicine, Hanyang University College of Medicine
- Department of Psychology, Sungkyunkwan University
| | - Yunsu Choi
- Department of Preventive Medicine, Hanyang University College of Medicine
| | - Kyoung Hwan Ahn
- Department of Preventive Medicine, Hanyang University College of Medicine
| | - Jung Ho Kim
- Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine
| | - Hye Seong
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul
| | - Youn Jeong Kim
- Division of Infectious Disease, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon
| | - Shin-Woo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu
| | - Jun Yong Choi
- Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine
| | - Hyo Youl Kim
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju
| | - Joon Young Song
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul
| | - Hee Jung Choi
- Division of Infectious Diseases, Department of Internal Medicine, Ewha Womans University College of Medicine
| | - Sang Il. Kim
- Division of Infectious Disease, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea
| | - Jang Wook Sohn
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul
| | - BumSik Chin
- Division of Infectious Diseases, Department of Internal Medicine, National Medical Center, Seoul, Korea
| | - Bo-Youl Choi
- Department of Preventive Medicine, Hanyang University College of Medicine
| | - Boyoung Park
- Department of Preventive Medicine, Hanyang University College of Medicine
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Amroodi MN, Maghsoudloo M, Amiri S, Mokhtari K, Mohseni P, Pourmarjani A, Jamali B, Khosroshahi EM, Asadi S, Tabrizian P, Entezari M, Hashemi M, Wan R. Unraveling the molecular and immunological landscape: Exploring signaling pathways in osteoporosis. Biomed Pharmacother 2024; 177:116954. [PMID: 38906027 DOI: 10.1016/j.biopha.2024.116954] [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: 04/19/2024] [Revised: 06/05/2024] [Accepted: 06/15/2024] [Indexed: 06/23/2024] Open
Abstract
Osteoporosis, characterized by compromised bone density and microarchitecture, represents a significant global health challenge, particularly in aging populations. This comprehensive review delves into the intricate signaling pathways implicated in the pathogenesis of osteoporosis, providing valuable insights into the pivotal role of signal transduction in maintaining bone homeostasis. The exploration encompasses cellular signaling pathways such as Wnt, Notch, JAK/STAT, NF-κB, and TGF-β, all of which play crucial roles in bone remodeling. The dysregulation of these pathways is a contributing factor to osteoporosis, necessitating a profound understanding of their complexities to unveil the molecular mechanisms underlying bone loss. The review highlights the pathological significance of disrupted signaling in osteoporosis, emphasizing how these deviations impact the functionality of osteoblasts and osteoclasts, ultimately resulting in heightened bone resorption and compromised bone formation. A nuanced analysis of the intricate crosstalk between these pathways is provided to underscore their relevance in the pathophysiology of osteoporosis. Furthermore, the study addresses some of the most crucial long non-coding RNAs (lncRNAs) associated with osteoporosis, adding an additional layer of academic depth to the exploration of immune system involvement in various types of osteoporosis. Finally, we propose that SKP1 can serve as a potential biomarker in osteoporosis.
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Affiliation(s)
- Morteza Nakhaei Amroodi
- Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, department of orthopedic, school of medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mazaher Maghsoudloo
- Key Laboratory of Epigenetics and Oncology, the Research Center for Preclinical Medicine, Southwest Medical University, Luzhou 646000, Sichuan, China
| | - Shayan Amiri
- Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, department of orthopedic, school of medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Khatere Mokhtari
- Department of Cellular and Molecular Biology and Microbiology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan, Iran
| | - Parnaz Mohseni
- Department of Pediatrics, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Azadeh Pourmarjani
- Department of Pediatrics, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Behdokht Jamali
- Department of microbiology and genetics, kherad Institute of higher education, Busheher, lran
| | - Elaheh Mohandesi Khosroshahi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Saba Asadi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Pouria Tabrizian
- Bone and Joint Reconstruction Research Center, Shafa Orthopedic Hospital, department of orthopedic, school of medicine, Iran University of Medical Sciences, Tehran, Iran.
| | - Maliheh Entezari
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Mehrdad Hashemi
- Farhikhtegan Medical Convergence Sciences Research Center, Farhikhtegan Hospital Tehran Medical Sciences, Islamic Azad University, Tehran, Iran; Department of Genetics, Faculty of Advanced Science and Technology Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
| | - Runlan Wan
- Department of Oncology, The Affiliated Hospital, Southwest Medical University, Luzhou 646000, China; Key Laboratory of Medical Electrophysiology, Ministry of Education & Medical Electrophysiological Key Laboratory of Sichuan Province, (Collaborative Innovation Center for Prevention of Cardiovascular Diseases), Institute of Cardiovascular Research, Southwest Medical University, Luzhou 646000, China.
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Valentine Y, Nikolajczyk BS. T cells in obesity-associated inflammation: The devil is in the details. Immunol Rev 2024. [PMID: 38767210 DOI: 10.1111/imr.13354] [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] [Indexed: 05/22/2024]
Abstract
Obesity presents a significant health challenge, affecting 41% of adults and 19.7% of children in the United States. One of the associated health challenges of obesity is chronic low-grade inflammation. In both mice and humans, T cells in circulation and in the adipose tissue play a pivotal role in obesity-associated inflammation. Changes in the numbers and frequency of specific CD4+ Th subsets and their contribution to inflammation through cytokine production indicate declining metabolic health, that is, insulin resistance and T2D. While some Th subset alterations are consistent between mice and humans with obesity, some changes mainly characterize male mice, whereas female mice often resist obesity and inflammation. However, protection from obesity and inflammation is not observed in human females, who can develop obesity-related T-cell inflammation akin to males. The decline in female sex hormones after menopause is also implicated in promoting obesity and inflammation. Age is a second underappreciated factor for defining and regulating obesity-associated inflammation toward translating basic science findings to the clinic. Weight loss in mice and humans, in parallel with these other factors, does not resolve obesity-associated inflammation. Instead, inflammation persists amid modest changes in CD4+ T cell frequencies, highlighting the need for further research into resolving changes in T-cell function after weight loss. How lingering inflammation after weight loss affecting the common struggle to maintain lower weight is unknown. Semaglutide, a newly popular pharmaceutical used for treating T2D and reversing obesity, holds promise for alleviating obesity-associated health complications, yet its impact on T-cell-mediated inflammation remains unexplored. Further work in this area could significantly contribute to the scientific understanding of the impacts of weight loss and sex/hormones in obesity and obesity-associated metabolic decline.
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Affiliation(s)
- Yolander Valentine
- Department of Pharmacology and Nutritional Science, University of Kentucky, Lexington, Kentucky, USA
| | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Science, University of Kentucky, Lexington, Kentucky, USA
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, Kentucky, USA
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, Kentucky, USA
- Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, Kentucky, USA
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Rockhold JD, Marszalkowski H, Sannella M, Gibney K, Murphy L, Zukowski E, Kalantar GH, SantaCruz-Calvo S, Hart SN, Kuhn MK, Yu J, Stefanik O, Chase G, Proctor EA, Hasturk H, Nikolajczyk BS, Bharath LP. Everolimus alleviates CD4 + T cell inflammation by regulating autophagy and cellular redox homeostasis. GeroScience 2024:10.1007/s11357-024-01187-z. [PMID: 38761287 DOI: 10.1007/s11357-024-01187-z] [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: 10/10/2023] [Accepted: 04/30/2024] [Indexed: 05/20/2024] Open
Abstract
Aging is associated with the onset and progression of multiple diseases, which limit health span. Chronic low-grade inflammation in the absence of overt infection is considered the simmering source that triggers age-associated diseases. Failure of many cellular processes during aging is mechanistically linked to inflammation; however, the overall decline in the cellular homeostasis mechanism of autophagy has emerged as one of the top and significant inducers of inflammation during aging, frequently known as inflammaging. Thus, physiological or pharmacological interventions aimed at improving autophagy are considered geroprotective. Rapamycin analogs (rapalogs) are known for their ability to inhibit mTOR and thus regulate autophagy. This study assessed the efficacy of everolimus, a rapalog, in regulating inflammatory cytokine production in T cells from older adults. CD4+ T cells from older adults were treated with a physiological dose of everolimus (0.01 µM), and indices of autophagy and inflammation were assessed to gain a mechanistic understanding of the effect of everolimus on inflammation. Everolimus (Ever) upregulated autophagy and broadly alleviated inflammatory cytokines produced by multiple T cell subsets. Everolimus's ability to alleviate the cytokines produced by Th17 subsets of T cells, such as IL-17A and IL-17F, was dependent on autophagy and antioxidant signaling pathways. Repurposing the antineoplastic drug everolimus for curbing inflammaging is promising, given the drug's ability to restore multiple cellular homeostasis mechanisms.
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Affiliation(s)
- Jack Donato Rockhold
- Department of Health Sciences and Nutrition, Merrimack College, North Andover, MA, USA
| | | | - Marco Sannella
- Department of Health Sciences and Nutrition, Merrimack College, North Andover, MA, USA
| | - Kaleigh Gibney
- Department of Health Sciences and Nutrition, Merrimack College, North Andover, MA, USA
| | - Lyanne Murphy
- Department of Biology, Merrimack College, North Andover, MA, USA
| | - Emelia Zukowski
- Department of Health Sciences and Nutrition, Merrimack College, North Andover, MA, USA
| | - Gabriella H Kalantar
- Dept of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY, USA
| | - Sara SantaCruz-Calvo
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, USA
- Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Samantha N Hart
- Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
- Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY, USA
| | - Madison K Kuhn
- Department of Neurosurgery, Pharmacology, and Biomedical Engineering and Center for Neural Engineering, Pennsylvania State University, Hershey, PA, USA
| | - Jingting Yu
- Razavi Newman Integrative Genomics and Bioinformatics Core, The Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Olivia Stefanik
- Department of Health Sciences and Nutrition, Merrimack College, North Andover, MA, USA
| | - Gabrielle Chase
- Department of Chemistry and Biochemistry, Merrimack College, North Andover, MA, USA
| | - Elizabeth A Proctor
- Department of Neurosurgery, Pharmacology, and Biomedical Engineering and Center for Neural Engineering, Pennsylvania State University, Hershey, PA, USA
- Department of Engineering Science & Mechanics, Pennsylvania State University, University Park, PA, USA
| | | | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY, USA
- Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Leena P Bharath
- Department of Health Sciences and Nutrition, Merrimack College, North Andover, MA, USA.
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Randall TD, Meza-Perez S. Immunity in adipose tissues: Cutting through the fat. Immunol Rev 2024. [PMID: 38733141 DOI: 10.1111/imr.13344] [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] [Indexed: 05/13/2024]
Abstract
Well known functions of adipose tissue include energy storage, regulation of thermogenesis, and glucose homeostasis-each of which are associated with the metabolic functions of fat. However, adipose tissues also have important immune functions. In this issue of Immunological Reviews, we present a series of articles that highlight the immune functions of adipose tissue, including the roles of specialized adipose-resident immune cells and fat-associated lymphoid structures. Importantly, immune cell functions in adipose tissues are often linked to the metabolic functions of adipocytes and vice versa. These reciprocal interactions and how they influence both immune and metabolic functions will be discussed in each article. In the first article, Wang et al.,11 discuss adipose-associated macrophages and how obesity and metabolism impact their phenotype and function. Several articles in this issue discuss T cells as either contributors to, or regulators of, inflammatory responses in adipose tissues. Valentine and Nikolajczyk12 provide insights into the role of T cells in obesity-associated inflammation and their contribution to metabolic dysfunction, whereas an article from Kallies and Vasanthakumar13 and another from Elkins and Li14 describe adipose-associated Tregs and how they help prevent inflammation and maintain metabolic homeostasis. Articles from Okabe35 as well as from Daley and Benezech15 discuss the structure and function of fat-associated lymphoid clusters (FALCs) that are prevalent in some adipose tissues and support local immune responses to pathogens, gut-derived microbes and fat-associated antigens. Finally, an article from Meher and McNamara16 describes how innate-like B1 cells in adipose tissues regulate cardiometabolic disease. Importantly, these articles highlight the physical and functional attributes of adipose tissues that are different between mice and humans, the metabolic and immune differences between various adipose depots in the body and the differences in immune cells, adipose tissues and metabolic functions between the sexes. At the end of this preface, we highlight how these differences are critically important for our understanding of anti-tumor immunity to cancers that metastasize to a specific example of visceral adipose tissue, the omentum. Together, these articles identify some unanswered mechanistic questions that will be important to address for a better understanding of immunity in adipose tissues.
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Affiliation(s)
- Troy D Randall
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Selene Meza-Perez
- Division of Clinical Immunology and Rheumatology, Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Kalantar GH, Saraswat S, SantaCruz-Calvo S, Gholamrezaeinejad F, Javidan A, Agrawal M, Liu R, Kern PA, Zhang XD, Nikolajczyk BS. Fasting and Glucose Metabolism Differentially Impact Peripheral Inflammation in Human Type 2 Diabetes. Nutrients 2024; 16:1404. [PMID: 38794641 PMCID: PMC11124302 DOI: 10.3390/nu16101404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 04/21/2024] [Accepted: 04/24/2024] [Indexed: 05/26/2024] Open
Abstract
Cytokines produced by peripheral T-helper 1/17 cells disproportionately contribute to the inflammation (i.e., metaflammation) that fuels type 2 diabetes (T2D) pathogenesis. Shifts in the nutrient milieu could influence inflammation through changes in T-cell metabolism. We aimed to determine whether changes in glucose utilization alter cytokine profiles in T2D. Peripheral blood mononuclear cells (PBMCs), CD4+ T-cells, and CD4+CD25- T-effector (Teff) cells were isolated from age-matched humans classified by glycemic control and BMI. Cytokines secreted by CD3/CD28-stimulated PBMCs and Teff were measured in supernatants with multiplex cytokine assays and a FLEXMAP-3D. Metabolic activity of stimulated CD4+ T-cells was measured by a Seahorse XFe96 analyzer. In this study, we demonstrated that T-cell stimulated PBMCs from non-fasted people with T2D produced higher amounts of cytokines compared to fasting. Although dysglycemia characterizes T2D, cytokine production by PBMCs or CD4+ T-cells in T2D was unaltered by hyperglycemic media. Moreover, pharmacological suppression of mitochondrial glucose oxidation did not change T-cell metabolism in T2D, yet enhanced cytokine competency. In conclusion, fasting and glucose metabolism differentially impact peripheral inflammation in human T2D, suggesting that glucose, along with fatty acid metabolites per our previous work, partner to regulate metaflammation. These data expose a major disconnect in the use of glycemic control drugs to target T2D-associated metaflammation.
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Affiliation(s)
- Gabriella H. Kalantar
- Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA;
| | - Shubh Saraswat
- Department of Biostatistics, University of Kentucky, Lexington, KY 40536, USA; (S.S.); (X.D.Z.)
| | - Sara SantaCruz-Calvo
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA (F.G.); (A.J.)
| | - Fatemeh Gholamrezaeinejad
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA (F.G.); (A.J.)
| | - Aida Javidan
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA (F.G.); (A.J.)
| | - Madhur Agrawal
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA (F.G.); (A.J.)
| | - Rui Liu
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY 40536, USA
| | - Philip A. Kern
- Department of Internal Medicine, University of Kentucky, Lexington, KY 40536, USA;
- Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, KY 40536, USA
| | - Xiaohua Douglas Zhang
- Department of Biostatistics, University of Kentucky, Lexington, KY 40536, USA; (S.S.); (X.D.Z.)
| | - Barbara S. Nikolajczyk
- Department of Microbiology, Immunology, and Molecular Genetics, University of Kentucky, Lexington, KY 40536, USA;
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40536, USA (F.G.); (A.J.)
- Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, KY 40536, USA
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Azizi S, Esmaeili Motlagh P, Eslami S, Ghafouri-Fard S. Association Between RORA Polymorphisms and Obesity. Biochem Genet 2024:10.1007/s10528-024-10768-8. [PMID: 38570441 DOI: 10.1007/s10528-024-10768-8] [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: 12/25/2023] [Accepted: 02/29/2024] [Indexed: 04/05/2024]
Abstract
RORα is a transcription factor encoded by RORA gene. This protein is involved in several metabolic conditions, including obesity. We assessed association between two polymorphisms within this gene (namely rs11639084 and rs4774388) and severe obesity in Iranian population. Both SNPs were associated with obesity in all models (P < 0.0001) except for over-dominant model. T allele of rs11639084 was associated with this trait with OR (95% CI) of 16.85 (13.11-21.67) and was considered as the risk allele. Allelic model best fit the data, since the AIC value for this model was the highest (AIC = 28.82). In the co-dominant model, TT genotype was associated with obesity with OR (95% CI) of 301.6 (137.4-662.1). This genotype was shown to be the risk genotype in the recessive model when compared with TC+CC (OR (95% CI) = 60.54 (30.35-120.7)). The C allele of rs4774388 was shown to be the risk allele with OR (95% CI) of 4.61 (3.72-5.71). In the recessive model, the CC genotype was associated with the mentioned trait with OR (95% CI) of 9.92 (6.62-14.8). This model best fit the data (AIC = 37.08). Cumulatively, the current study suggests contribution of RORα to the pathogenesis of obesity.
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Affiliation(s)
- Shahryar Azizi
- Department of Surgery, Erfan Niayesh Hospital, Tehran, Iran
| | - Parisa Esmaeili Motlagh
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Solat Eslami
- Department of Medical Biotechnology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
- Non-communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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Yang H, Liu Q, Liu H, Kang X, Tian H, Kang Y, Li L, Yang X, Ren P, Kuang X, Wang X, Guo L, Tong M, Ma J, Fan W. Berberine alleviates concanavalin A-induced autoimmune hepatitis in mice by modulating the gut microbiota. Hepatol Commun 2024; 8:e0381. [PMID: 38466881 DOI: 10.1097/hc9.0000000000000381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 12/14/2023] [Indexed: 03/13/2024] Open
Abstract
BACKGROUND Autoimmune hepatitis (AIH) is an immune-mediated liver disease of unknown etiology accompanied by intestinal dysbiosis and a damaged intestinal barrier. Berberine (BBR) is a traditional antibacterial medicine that has a variety of pharmacological properties. It has been reported that BBR alleviates AIH, but relevant mechanisms remain to be fully explored. METHODS BBR was orally administered at doses of 100 mg⋅kg-1⋅d-1 for 7 days to mice before concanavalin A-induced AIH model establishment. Histopathological, immunohistochemical, immunofluorescence, western blotting, ELISA, 16S rRNA analysis, flow cytometry, real-time quantitative PCR, and fecal microbiota transplantation studies were performed to ascertain BBR effects and mechanisms in AIH mice. RESULTS We found that liver necrosis and apoptosis were decreased upon BBR administration; the levels of serum transaminase, serum lipopolysaccharide, liver proinflammatory factors TNF-α, interferon-γ, IL-1β, and IL-17A, and the proportion of Th17 cells in spleen cells were all reduced, while the anti-inflammatory factor IL-10 and regulatory T cell proportions were increased. Moreover, BBR treatment increased beneficial and reduced harmful bacteria in the gut. BBR also strengthened ileal barrier function by increasing the expression of the tight junction proteins zonula occludens-1 and occludin, thereby blocking lipopolysaccharide translocation, preventing lipopolysaccharide/toll-like receptor 4 (TLR4)/ NF-κB pathway activation, and inhibiting inflammatory factor production in the liver. Fecal microbiota transplantation from BBR to model mice also showed that BBR potentially alleviated AIH by altering the gut microbiota. CONCLUSIONS BBR alleviated concanavalin A-induced AIH by modulating the gut microbiota and related immune regulation. These results shed more light on potential BBR therapeutic strategies for AIH.
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Affiliation(s)
- Hao Yang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Qingqing Liu
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Haixia Liu
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Xing Kang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Haixia Tian
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Yongbo Kang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
| | - Lin Li
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
| | - Xiaodan Yang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Peng Ren
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Xiaoyu Kuang
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
| | - Xiaohui Wang
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
- Laboratory of Morphology, Shanxi Medical University, Jinzhong 030619, China
| | - Linzhi Guo
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
- Laboratory of Morphology, Shanxi Medical University, Jinzhong 030619, China
| | - Mingwei Tong
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
| | - Jieqiong Ma
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
| | - Weiping Fan
- Department of Microbiology and Immunology, Shanxi Medical University, Jinzhong, China
- Key Laboratory of Cellular Physiology (Shanxi Medical University), Ministry of Education, and Shanxi Key Laboratory of Cellular Physiology, Taiyuan, China
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Liu G, Liu X, Wang F, Jia G, Zhao H, Chen X, Wang J. Effects of Dietary Glutamine Supplementation on the Modulation of Microbiota and Th17/Treg Immune Response Signaling Pathway in Piglets after Lipopolysaccharide Challenge. J Nutr 2024:S0022-3166(24)00100-7. [PMID: 38367809 DOI: 10.1016/j.tjnut.2024.02.014] [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: 12/30/2023] [Revised: 02/05/2024] [Accepted: 02/13/2024] [Indexed: 02/19/2024] Open
Abstract
BACKGROUND Glutamine (Gln) has an important effect on the growth performance and immune function of piglets. However, the effect of Gln on intestinal immunity in piglets through modulating the signaling pathways of the helper T cells 17 (Th17)/regulatory T cells (Treg) immune response has not been reported. OBJECTIVE This study aimed to determine the effect of Gln on piglet growth performance and immune stress response and its mechanism in piglets. METHODS Twenty-four weaned piglets were randomly assigned to 4 treatments with 6 replicates each, using a 2 × 2 factorial arrangement: diet (basal diet or 1% Gln diet) and immunological challenge [saline or lipopolysaccharide (LPS)]. After 21 d, half of the piglets on the basal diet and 1% Gln diet received the intraperitoneal injection of LPS and the other half received the same volume of normal saline. RESULTS The results showed that Gln increased average daily feed intake and average daily weight gain in comparison with the control group (P < 0.05). Dietary Gln increased the villus height, villus height-to-crypt depth ratio, and the abundance of Bacteroidetes, Lactobacillus sp., and Ruminococcus sp. while reducing the abundance of Firmicutes, Clostridium sensu stricto 1 sp., and Terrisporobacter sp. (P < 0.05). Furthermore, Gln increased the concentration of short-chain fatty acids in the colon and the expression of genes of interleukin (IL)-10, transforming growth factor-beta-1, forkhead box P3 while downregulating the expression of genes of IL-6, IL-8, IL-1β, tumor necrosis factor-α, IL-17A, IL-21, signal transducer and activator of transcription 3, and rar-related orphan receptor c in ileum (P < 0.05). Correlation analysis demonstrated a strong association between colonic microbiota, short-chain fatty acids, and ileal inflammatory cytokines. CONCLUSIONS These results suggest that dietary Gln could improve growth performance and attenuate LPS-challenged intestinal inflammation by modulating microbiota and the Th17/Treg immune response signaling pathway in piglets.
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Affiliation(s)
- Guangmang Liu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China.
| | - Xinlian Liu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Fang Wang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Gang Jia
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Hua Zhao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Xiaoling Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Chengdu, Sichuan, China
| | - Jing Wang
- Maize Research Institute, Sichuan Agricultural University, Chengdu, Sichuan, China
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10
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Bradley D, Deng T, Shantaram D, Hsueh WA. Orchestration of the Adipose Tissue Immune Landscape by Adipocytes. Annu Rev Physiol 2024; 86:199-223. [PMID: 38345903 DOI: 10.1146/annurev-physiol-042222-024353] [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] [Indexed: 02/15/2024]
Abstract
Obesity is epidemic and of great concern because of its comorbid and costly inflammatory-driven complications. Extensive investigations in mice have elucidated highly coordinated, well-balanced interactions between adipocytes and immune cells in adipose tissue that maintain normal systemic metabolism in the lean state, while in obesity, proinflammatory changes occur in nearly all adipose tissue immune cells. Many of these changes are instigated by adipocytes. However, less is known about obesity-induced adipose-tissue immune cell alterations in humans. Upon high-fat diet feeding, the adipocyte changes its well-known function as a metabolic cell to assume the role of an immune cell, orchestrating proinflammatory changes that escalate inflammation and progress during obesity. This transformation is particularly prominent in humans. In this review, we (a) highlight a leading and early role for adipocytes in promulgating inflammation, (b) discuss immune cell changes and the time course of these changes (comparing humans and mice when possible), and (c) note how reversing proinflammatory changes in most types of immune cells, including adipocytes, rescues adipose tissue from inflammation and obese mice from insulin resistance.
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Affiliation(s)
- David Bradley
- Diabetes and Metabolism Research Center, Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA;
- Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, Pennsylvania State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA;
| | - Tuo Deng
- Second Xiangya Hospital, Central South University, Changsha, China
| | - Dharti Shantaram
- Diabetes and Metabolism Research Center, Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA;
| | - Willa A Hsueh
- Diabetes and Metabolism Research Center, Division of Endocrinology, Diabetes and Metabolism, Department of Internal Medicine, The Ohio State University, Columbus, Ohio, USA;
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11
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Gao F, Litchfield B, Wu H. Adipose tissue lymphocytes and obesity. THE JOURNAL OF CARDIOVASCULAR AGING 2024; 4:5. [PMID: 38455510 PMCID: PMC10919906 DOI: 10.20517/jca.2023.38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
Obesity is associated with chronic inflammation in adipose tissue (AT), mainly evidenced by infiltration and phenotypic changes of various types of immune cells. Macrophages are the major innate immune cells and represent the predominant immune cell population within AT. Lymphocytes, including T cells and B cells, are adaptive immune cells and constitute another important immune cell population in AT. In obesity, CD8+ effector memory T cells, CD4+ Th1 cells, and B2 cells are increased in AT and promote AT inflammation, while regulatory T cells and Th2 cells, which usually function as immune regulatory or type 2 inflammatory cells, are reduced in AT. Immune cells may regulate the metabolism of adipocytes and other cells through various mechanisms, contributing to the development of metabolic diseases, including insulin resistance and type 2 diabetes. Efforts targeting immune cells and inflammation to prevent and treat obesity-linked metabolic disease have been explored, but have not yielded significant success in clinical studies. This review provides a concise overview of the changes in lymphocyte populations within AT and their potential role in AT inflammation and the regulation of metabolic functions in the context of obesity.
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Affiliation(s)
- Feng Gao
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
| | | | - Huaizhu Wu
- Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
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12
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Zukowski E, Sannella M, Rockhold JD, Kalantar GH, Yu J, SantaCruz‐Calvo S, Kuhn MK, Hah N, Ouyang L, Wang T, Murphy L, Marszalkowski H, Gibney K, Drummond MJ, Proctor EA, Hasturk H, Nikolajczyk BS, Bharath LP. STAT3 modulates CD4 + T mitochondrial dynamics and function in aging. Aging Cell 2023; 22:e13996. [PMID: 37837188 PMCID: PMC10652300 DOI: 10.1111/acel.13996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 09/10/2023] [Accepted: 09/11/2023] [Indexed: 10/15/2023] Open
Abstract
Aging promotes numerous intracellular changes in T cells that impact their effector function. Our data show that aging promotes an increase in the localization of STAT3 to the mitochondria (mitoSTAT3), which promotes changes in mitochondrial dynamics and function and T-cell cytokine production. Mechanistically, mitoSTAT3 increased the activity of aging T-cell mitochondria by increasing complex II. Limiting mitoSTAT3 using a mitochondria-targeted STAT3 inhibitor, Mtcur-1 lowered complex II activity, prevented age-induced changes in mitochondrial dynamics and function, and reduced Th17 inflammation. Exogenous expression of a constitutively phosphorylated form of STAT3 in T cells from young adults mimicked changes in mitochondrial dynamics and function in T cells from older adults and partially recapitulated aging-related cytokine profiles. Our data show the mechanistic link among mitoSTAT3, mitochondrial dynamics, function, and T-cell cytokine production.
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Affiliation(s)
- Emelia Zukowski
- Department of Nutrition and Public HealthMerrimack CollegeNorth AndoverMassachusettsUSA
| | - Marco Sannella
- Department of Nutrition and Public HealthMerrimack CollegeNorth AndoverMassachusettsUSA
| | - Jack Donato Rockhold
- Department of Nutrition and Public HealthMerrimack CollegeNorth AndoverMassachusettsUSA
| | - Gabriella H. Kalantar
- Department of Microbiology, Immunology and Molecular GeneticsUniversity of KentuckyLexingtonKentuckyUSA
| | - Jingting Yu
- Razavi Newman Integrative Genomics and Bioinformatics CoreThe Salk Institute for Biological StudiesLa JollaCaliforniaUSA
| | - Sara SantaCruz‐Calvo
- Departments of Pharmacology and Nutritional SciencesUniversity of KentuckyLexingtonKentuckyUSA
- Barnstable Brown Diabetes and Obesity CenterUniversity of KentuckyLexingtonKentuckyUSA
| | - Madison K. Kuhn
- Departments of Neurosurgery, Pharmacology, and Biomedical Engineering and Center for Neural EngineeringPennsylvania State UniversityHersheyPennsylvaniaUSA
| | - Nasun Hah
- Next Generation Sequencing CoreThe Salk Institute for Biological StudiesLa JollaCaliforniaUSA
| | - Ling Ouyang
- Next Generation Sequencing CoreThe Salk Institute for Biological StudiesLa JollaCaliforniaUSA
| | - Tzu‐Wen Wang
- Next Generation Sequencing CoreThe Salk Institute for Biological StudiesLa JollaCaliforniaUSA
| | - Lyanne Murphy
- Department of BiologyMerrimack CollegeNorth AndoverMassachusettsUSA
| | | | - Kaleigh Gibney
- Department of Nutrition and Public HealthMerrimack CollegeNorth AndoverMassachusettsUSA
| | - Micah J. Drummond
- Department of Physical Therapy and Athletic TrainingUniversity of UtahSalt Lake CityUtahUSA
| | - Elizabeth A. Proctor
- Departments of Neurosurgery, Pharmacology, and Biomedical Engineering and Center for Neural EngineeringPennsylvania State UniversityHersheyPennsylvaniaUSA
- Department of Engineering Science & MechanicsPennsylvania State UniversityHersheyPennsylvaniaUSA
| | | | - Barbara S. Nikolajczyk
- Departments of Pharmacology and Nutritional SciencesUniversity of KentuckyLexingtonKentuckyUSA
- Barnstable Brown Diabetes and Obesity CenterUniversity of KentuckyLexingtonKentuckyUSA
| | - Leena P. Bharath
- Department of Nutrition and Public HealthMerrimack CollegeNorth AndoverMassachusettsUSA
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13
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Bosnić Z, Babič F, Wittlinger T, Anderková V, Šahinović I, Majnarić LT. Influence of Age, Gender, Frailty, and Body Mass Index on Serum IL-17A Levels in Mature Type 2 Diabetic Patients. Med Sci Monit 2023; 29:e940128. [PMID: 37837182 PMCID: PMC10583604 DOI: 10.12659/msm.940128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Accepted: 08/09/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND The cytokine IL-17A is emerging as a marker of chronic inflammation in cardio-metabolic conditions. This study aimed to identify relevant factors that in older primary care patients with type 2 diabetes (T2D) could influence serum IL-17A concentrations. The results have a potential to improve risk stratification and therapy options for these patients. MATERIAL AND METHODS The study was conducted during a period of 4 months, in 2020, in the south-eastern region of Croatia. Patients from primary health care, diagnosed with T2D (N=170, M: F 75: 95, ≥50 years old), were recruited at their visits. Those with malignant diseases, on chemotherapy or biological therapy, with amputated legs, or at hemodialysis, were excluded. The multinomial regression models were used to determine independent associations of the groups of variables, indicating sociodemographic and clinical characteristics of these patients, with increasing values (quartiles) of serum IL-17A. RESULTS The regression models indicated the frailty index and sex bias are the key modifying factors in associations of other variables with IL-17A serum values. CONCLUSIONS Sex bias and the existence of different frailty phenotypes could be the essential determining factors of the serum IL-17A levels in community-dwelling patients with T2D age 50 years and older. The results support the concept of T2D as a complex disorder.
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Affiliation(s)
- Zvonimir Bosnić
- Department of Family Medicine, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - František Babič
- Department of Cybernetics and Artificial Intelligence, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Košice, Slovakia
| | - Thomas Wittlinger
- Department of Cardiology, Asklepios Hospital, Goslar, Germany
- University of Göttingen, Göttingen, Germany
| | - Viera Anderková
- Department of Cybernetics and Artificial Intelligence, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Košice, Slovakia
| | - Ines Šahinović
- Department of Clinical Laboratory Diagnostics, Osijek University Hospital, Osijek, Croatia
| | - Ljiljana Trtica Majnarić
- Department of Family Medicine, Faculty of Medicine, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
- Department of Pathophysiology, Physiology and Immunology, Faculty of Dental Medicine and Health, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
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14
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Bachstetter AD, Lutshumba J, Winford E, Abner EL, Martin BJ, Harp JP, Van Eldik LJ, Schmitt FA, Wilcock DM, Stowe AM, Jicha GA, Nikolajczyk BS. A blunted T H17 cytokine signature in women with mild cognitive impairment: insights from inflammatory profiling of a community-based cohort of older adults. Brain Commun 2023; 5:fcad259. [PMID: 37901041 PMCID: PMC10612408 DOI: 10.1093/braincomms/fcad259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 06/23/2023] [Accepted: 10/06/2023] [Indexed: 10/31/2023] Open
Abstract
People with dementia have an increase in brain inflammation, caused in part by innate and adaptive immune cells. However, it remains unknown whether dementia-associated diseases alter neuro-immune reflex arcs to impact the systemic immune system. We examined peripheral immune cells from a community-based cohort of older adults to test if systemic inflammatory cytokine signatures associated with early stages of cognitive impairment. Human peripheral blood mononuclear cells were cultured with monocyte or T-cell-targeted stimuli, and multiplex assays quantitated cytokines in the conditioned media. Following T-cell-targeted stimulation, cells from women with cognitive impairment produced lower amounts of TH17 cytokines compared with cells from cognitively healthy women, while myeloid-targeted stimuli elicited similar amounts of cytokines from cells of both groups. This TH17 signature correlated with the proportion of circulating CD4+ and CD8+ T cells and plasma glial fibrillary acidic protein and neurofilament light concentrations. These results suggest that decreases in TH17 cytokines could be an early systemic change in women at risk for developing dementia. Amelioration of TH17s cytokines in early cognitive impairment could, in part, explain the compromised ability of older adults to respond to vaccines or defend against infection.
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Affiliation(s)
- Adam D Bachstetter
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536, USA
- Department of Neuroscience, University of Kentucky, Lexington, KY 40536, USA
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
| | - Jenny Lutshumba
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536, USA
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
| | - Edric Winford
- Department of Neuroscience, University of Kentucky, Lexington, KY 40536, USA
| | - Erin L Abner
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
- Department of Epidemiology, University of Kentucky, Lexington, KY 40536, USA
| | - Barbra J Martin
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
| | - Jordan P Harp
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
- Department of Neurology, University of Kentucky, Lexington, KY 40536, USA
| | - Linda J Van Eldik
- Department of Neuroscience, University of Kentucky, Lexington, KY 40536, USA
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
| | - Frederick A Schmitt
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY 40536, USA
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
- Department of Neurology, University of Kentucky, Lexington, KY 40536, USA
- Department of Behavioral Sciences, University of Kentucky, Lexington, KY 40536, USA
| | - Donna M Wilcock
- Department of Neuroscience, University of Kentucky, Lexington, KY 40536, USA
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
- Department of Physiology, University of Kentucky, Lexington, KY 40536, USA
| | - Ann M Stowe
- Department of Neuroscience, University of Kentucky, Lexington, KY 40536, USA
- Department of Neurology, University of Kentucky, Lexington, KY 40536, USA
| | - Gregory A Jicha
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY 40536, USA
- Department of Neurology, University of Kentucky, Lexington, KY 40536, USA
| | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Science, and Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY 40536, USA
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15
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Peng H, Lv Y, Li C, Cheng Z, He S, Wang C, Liu J. Cathepsin S inhibition in dendritic cells prevents Th17 cell differentiation in perivascular adipose tissues following vascular injury in diabetic rats. J Biochem Mol Toxicol 2023; 37:e23419. [PMID: 37341014 DOI: 10.1002/jbt.23419] [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: 12/05/2022] [Revised: 05/25/2023] [Accepted: 06/08/2023] [Indexed: 06/22/2023]
Abstract
In the context of diabetes mellitus (DM), the circulating cathepsin S (CTSS) level is significantly higher in the cardiovascular disease group. Therefore, this study was designed to investigate the role of CTSS in restenosis following carotid injury in diabetic rats. To induce DM, 60 mg/kg of streptozotocin (STZ) in citrate buffer was injected intraperitoneally into Sprague-Dawley rats. After successful modeling of DM, wire injury of the rat carotid artery was performed, followed by adenovirus transduction. Levels of blood glucose and Th17 cell surface antigens including ROR-γt, IL-17A, IL-17F, IL-22, and IL-23 in perivascular adipose tissues (PVAT) were evaluated. For in vitro analysis, human dendritic cells (DCs) were treated with 5.6-25 mM glucose for 24 h. The morphology of DCs was observed using an optical microscope. CD4+ T cells derived from human peripheral blood mononuclear cells were cocultured with DCs for 5 days. Levels of IL-6, CTSS, ROR-γt, IL-17A, IL-17F, IL-22 and IL-23 were measured. Flow cytometry was conducted to detect DC surface biomarkers (CD1a, CD83, and CD86) and Th17 cell differentiation. The collected DCs presented a treelike shape and were positive for CD1a, CD83, and CD86. Glucose impaired DC viability at the dose of 35 mM. Glucose treatment led to an increase in CTSS and IL-6 expression in DCs. Glucose-treated DCs promoted the differentiation of Th17 cells. CTSS depletion downregulated IL-6 expression and inhibited Th17 cell differentiation in vitro and in vivo. CTSS inhibition in DCs inhibits Th17 cell differentiation in PVAT tissues from diabetic rats following vascular injury.
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Affiliation(s)
- Hongyu Peng
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Yuan Lv
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Changjiang Li
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Zichao Cheng
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Songyuan He
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Cong Wang
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
| | - Jinghua Liu
- Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing, China
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16
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Fleeman RM, Snyder AM, Kuhn MK, Chan DC, Smith GC, Crowley NA, Arnold AC, Proctor EA. Predictive link between systemic metabolism and cytokine signatures in the brain of apolipoprotein E ε4 mice. Neurobiol Aging 2023; 123:154-169. [PMID: 36572594 PMCID: PMC9892258 DOI: 10.1016/j.neurobiolaging.2022.11.015] [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: 06/29/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 12/12/2022]
Abstract
The ε4 variant of apolipoprotein E (APOE) is the strongest and most common genetic risk factor for Alzheimer's disease (AD). While the mechanism of conveyed risk is incompletely understood, promotion of inflammation, dysregulated metabolism, and protein misfolding and aggregation are contributors to accelerating disease. Here we determined the concurrent effects of systemic metabolic changes and brain inflammation in young (3-month-old) and aged (18-month-old) male and female mice carrying the APOE4 gene. Using functional metabolic assays alongside multivariate modeling of hippocampal cytokine levels, we found that brain cytokine signatures are predictive of systemic metabolic outcomes, independent of AD proteinopathies. Male and female mice each produce different cytokine signatures as they age and as their systemic metabolic phenotype declines, and these signatures are APOE genotype dependent. Ours is the first study to identify a quantitative and predictive link between systemic metabolism and specific pathological cytokine signatures in the brain. Our results highlight the effects of APOE4 beyond the brain and suggest the potential for bi-directional influence of risk factors in the brain and periphery.
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Affiliation(s)
- Rebecca M Fleeman
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA; Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA
| | - Amanda M Snyder
- Department of Neurology, Penn State College of Medicine, Hershey, PA, USA
| | - Madison K Kuhn
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA; Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA; Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA; Center for Neural Engineering, Pennsylvania State University, University Park, PA, USA
| | - Dennis C Chan
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA; Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA; Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA; Center for Neural Engineering, Pennsylvania State University, University Park, PA, USA
| | - Grace C Smith
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA; Department of Biology, Pennsylvania State University, University Park, PA, USA
| | - Nicole A Crowley
- Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA; Center for Neural Engineering, Pennsylvania State University, University Park, PA, USA; Department of Biology, Pennsylvania State University, University Park, PA, USA
| | - Amy C Arnold
- Department of Neural and Behavioral Sciences, Penn State College of Medicine, Hershey, PA, USA
| | - Elizabeth A Proctor
- Department of Neurosurgery, Penn State College of Medicine, Hershey, PA, USA; Department of Pharmacology, Penn State College of Medicine, Hershey, PA, USA; Department of Biomedical Engineering, Pennsylvania State University, University Park, PA, USA; Center for Neural Engineering, Pennsylvania State University, University Park, PA, USA; Department of Engineering Science & Mechanics, Pennsylvania State University, University Park, PA, USA.
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17
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Sardarmelli Z, Sheikh V, Solgi G, Behzad M. Enhanced production of interleukin-29 and related genes are associated with T helper 1 cell parameters in patients with type 2 diabetes mellitus. Hum Immunol 2023; 84:235-240. [PMID: 36635158 DOI: 10.1016/j.humimm.2023.01.002] [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: 11/02/2022] [Revised: 12/27/2022] [Accepted: 01/05/2023] [Indexed: 01/12/2023]
Abstract
OBJECTIVE The production of interleukin (IL)-29 andthe genes related to IL-29 signaling pathway (STAT1, NF-κB, and NFATc1), and T helper (Th) 1 cells (T-bet, IFN-γ, TNF-α, and IL-2) were evaluated in type 2 diabetes mellitus (T2DM). Correlations between IL-29 and diabetes parameters, and between gene expression in IL-29 pathway and Th1 cells were also examined. MATERIALS AND METHODS 41 newly diagnosed patients with T2DM and 41 healthy controls were recruited. CD4+ T cells were purifed and the production of IL-29 in the supernatant of anti- CD3 and anti- CD28 activated Th cells was detected using ELISA. The expression of IL-29- and Th1- related genes was determined with real-time PCR. RESULTS The secretion of IL-29 and the expression levels of NF-κB, NFATc1, IFN-γ, and TNF-α in Th cells were seen to be increased in diabetes persons compared to controls. Positive connections between IL-29 with hemoglobin A1c (HbA1c) and fasting plasma glucose (FPG) were found in diabetes persons. IL-29 was positively correlated with NFATc1 and TNF-α. NFATc1 was positively related to TNF-α. CONCLUSION Abnormal expression levels of IL-29- and Th1- related genes are linked with T2DM pathogenesis. IL-29 may amplify the expression of Th1-specific genes especially TNF-α by upregulating NFATc1 expression.
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Affiliation(s)
- Zahra Sardarmelli
- Department of Immunology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Vida Sheikh
- Department of Internal Medicine, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Ghasem Solgi
- Department of Immunology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Mahdi Behzad
- Department of Immunology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
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18
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Felipe LA, Bachi ALL, Oliveira MC, Moreira SMBP, Afonso JPR, Lino MEM, Paixão V, Silva CHM, Vieira RP, Vencio S, Jirjos EI, Malheiros CA, Insalaco G, Júnior WRF, Oliveira LVF. Effects of Roux-en-Y gastric bypass on the metabolic profile and systemic inflammatory status of women with metabolic syndrome: randomized controlled clinical trial. Diabetol Metab Syndr 2023; 15:19. [PMID: 36788619 PMCID: PMC9930348 DOI: 10.1186/s13098-023-00986-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 01/25/2023] [Indexed: 02/16/2023] Open
Abstract
BACKGROUND Obesity remains a public health problem worldwide. The high prevalence of this condition in the population raises further concerns, considering that comorbidities are often associated with obesity. Among the comorbidities closely associated with obesity, metabolic syndrome (MS) is particularly important, which potentially increases the risk of manifestation of other disorders, such as the prothrombotic and systemic pro-inflammatory states. METHODS A randomized, controlled clinical trial was performed involving female patients (n = 32) aged between 18 and 65 years, with a clinical diagnosis of MS, with severe obesity undergoing Roux-en-Y gastric bypass (RYGB). The study design followed the Consolidated Standards of Reporting Trials statement (CONSORT). Lipid profile, blood glucose and adipokines (adiponectin, leptin, and resistin) and (cytokines IL-1β, IL-6, IL-17, IL-23, and TNF-α) in blood plasma samples were evaluated before and six months after RYGB. RESULTS Patients undergoing RYGB (BSG) showed a significant improvement from preoperative grade III obesity to postoperative grade I obesity. The results showed that while HDL levels increased, the other parameters showed a significant reduction in their postoperative values when compared not only to the values observed before surgery in the BSG group, but also to the values obtained in the control group (CG). As for systemic inflammatory markers adiponectin, leptin, resistin, IL-1β, IL-6, IL-17, IL-23 and TNF- α it was observed that the levels of resistin and IL-17 in the second evaluation increased significantly when compared to the levels observed in the first evaluation in the CG. In the BSG group, while the levels of adiponectin increased, the levels of the other markers showed significant reductions in the postoperative period, in relation to the respective preoperative levels. The analysis of Spearman's correlation coefficient showed a significant positive correlation between IL-17 and IL-23 in the preoperative period, significant positive correlations between TNF-α and IL-6, TNF-α and IL-17, IL-6 and IL-17, and IL-17 and IL-23 were observed postoperatively. CONCLUSIONS According to our results, the reduction of anthropometric measurements induced by RYGB, significantly improves not only the plasma biochemical parameters (lipid profile and glycemia), but also the systemic inflammatory status of severely obese patients with MS. Trials registration NCT02409160.
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Affiliation(s)
- Lucenda A Felipe
- Post-Graduation Program in Health Sciences, Santa Casa of Sao Paulo Medical School, Sao Paulo, SP, 01221-010, Brazil
| | - André L L Bachi
- Post-Graduation Program in Health Sciences, Santo Amaro University (UNISA), São Paulo, SP, Brazil
| | - Miriã C Oliveira
- Human Movement and Rehabilitation Post Graduation Program, Evangelical University of Goiás (UniEVANGELICA), Anápolis, GO, Brazil
| | - Sandra M B P Moreira
- Post-Graduation Program in Health Sciences, Santa Casa of Sao Paulo Medical School, Sao Paulo, SP, 01221-010, Brazil
| | - João Pedro R Afonso
- Human Movement and Rehabilitation Post Graduation Program, Evangelical University of Goiás (UniEVANGELICA), Anápolis, GO, Brazil
| | - Maria E M Lino
- Scientific Initiation Program, Evangelical University of Goiás, (UniEVANGELICA), Anápolis, GO, Brazil
| | - Vitória Paixão
- Department of Otorhinolaryngology, ENT Lab, Federal University of São Paulo (UNIFESP), São Paulo, SP, 04021-001, Brazil
| | - Carlos H M Silva
- Human Movement and Rehabilitation Post Graduation Program, Evangelical University of Goiás (UniEVANGELICA), Anápolis, GO, Brazil
| | - Rodolfo P Vieira
- Human Movement and Rehabilitation Post Graduation Program, Evangelical University of Goiás (UniEVANGELICA), Anápolis, GO, Brazil
| | - Sergio Vencio
- Institute of Pharmaceutical Sciences, Goiania, (GO), Brazil
| | - Elias I Jirjos
- Post-Graduation Program in Health Sciences, Santa Casa of Sao Paulo Medical School, Sao Paulo, SP, 01221-010, Brazil
| | - Carlos A Malheiros
- Post-Graduation Program in Health Sciences, Santa Casa of Sao Paulo Medical School, Sao Paulo, SP, 01221-010, Brazil
| | - Giuseppe Insalaco
- Institute for Biomedical Research and Innovation, National Research Council of Italy (CNR), 90146, Palermo, Italy
| | - Wilson R Freitas Júnior
- Post-Graduation Program in Health Sciences, Santa Casa of Sao Paulo Medical School, Sao Paulo, SP, 01221-010, Brazil
| | - Luis V F Oliveira
- Human Movement and Rehabilitation Post Graduation Program, Evangelical University of Goiás (UniEVANGELICA), Anápolis, GO, Brazil.
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Shirakawa K, Sano M. Drastic transformation of visceral adipose tissue and peripheral CD4 T cells in obesity. Front Immunol 2023; 13:1044737. [PMID: 36685567 PMCID: PMC9846168 DOI: 10.3389/fimmu.2022.1044737] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Obesity has a pronounced effect on the immune response in systemic organs that results in not only insulin resistance but also altered immune responses to infectious diseases and malignant tumors. Obesity-associated microenvironmental changes alter transcriptional expression and metabolism in T cells, leading to alterations in T-cell differentiation, proliferation, function, and survival. Adipokines, cytokines, and lipids derived from obese visceral adipose tissue (VAT) may also contribute to the systemic T-cell phenotype, resulting in obesity-specific pathogenesis. VAT T cells, which have multiple roles in regulating homeostasis and energy utilization and defending against pathogens, are most susceptible to obesity. In particular, many studies have shown that CD4 T cells are deeply involved in the homeostasis of VAT endocrine and metabolic functions and in obesity-related chronic inflammation. In obesity, macrophages and adipocytes in VAT function as antigen-presenting cells and contribute to the obesity-specific CD4 T-cell response by inducing CD4 T-cell proliferation and differentiation into inflammatory effectors via interactions between major histocompatibility complex class II and T-cell receptors. When obesity persists, prolonged stimulation by leptin and circulating free fatty acids, repetitive antigen stimulation, activating stress responses, and hypoxia induce exhaustion of CD4 T cells in VAT. T-cell exhaustion is characterized by restricted effector function, persistent expression of inhibitory receptors, and a transcriptional state distinct from functional effector and memory T cells. Moreover, obesity causes thymic regression, which may result in homeostatic proliferation of obesity-specific T-cell subsets due to changes in T-cell metabolism and gene expression in VAT. In addition to causing T-cell exhaustion, obesity also accelerates cellular senescence of CD4 T cells. Senescent CD4 T cells secrete osteopontin, which causes further VAT inflammation. The obesity-associated transformation of CD4 T cells remains a negative legacy even after weight loss, causing treatment resistance of obesity-related conditions. This review discusses the marked transformation of CD4 T cells in VAT and systemic organs as a consequence of obesity-related microenvironmental changes.
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Affiliation(s)
| | - Motoaki Sano
- Department of Cardiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, Japan
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20
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Xu Q, Zhang X, Li T, Shao S. Exenatide regulates Th17/Treg balance via PI3K/Akt/FoxO1 pathway in db/db mice. Mol Med 2022; 28:144. [PMID: 36463128 PMCID: PMC9719171 DOI: 10.1186/s10020-022-00574-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/11/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND The T helper 17 (Th17)/T regulatory (Treg) cell imbalance is involved in the course of obesity and type 2 diabetes mellitus (T2DM). In the current study, the exact role of glucagon-like peptide-1 receptor agonist (GLP-1RA) exenatide on regulating the Th17/Treg balance and the underlying molecular mechanisms are investigated in obese diabetic mice model. METHODS Metabolic parameters were monitored in db/db mice treated with/without exenatide during 8-week study period. The frequencies of Th17 and Treg cells from peripheral blood and pancreas in db/db mice were assessed. The phosphoinositide 3-kinase (PI3K)/protein kinase B (Akt)/Forkhead box O1 (FoxO1) pathway in Th17 and Treg cells from the spleens of male C57BL/6J mice was detected by western blotting. In addition, the expression of glucagon-like peptide-1 receptor (GLP-1R) in peripheral blood mononuclear cells (PBMCs) of male C57BL/6J mice was analyzed. RESULTS Exenatide treatment improved β-cell function and insulitis in addition to glucose, insulin sensitivity and weight. Increased Th17 and decreased Treg cells in peripheral blood were present as diabetes progressed while exenatide corrected this imbalance. Progressive IL-17 + T cell infiltration of pancreatic islets was alleviated by exenatide intervention. In vitro study showed no significant difference in the level of GLP-1R expression in PBMCs between control and palmitate (PA) groups. In addition, PA could promote Th17 but suppress Treg differentiation along with down-regulating the phosphorylation of PI3K/Akt/FoxO1, which was reversed by exenatide intervention. FoxO1 inhibitor AS1842856 could abrogate all these effects of exenatide against lipid stress. CONCLUSIONS Exenatide could restore systemic Th17/Treg balance via regulating FoxO1 pathway with the progression of diabetes in db/db mice. The protection of pancreatic β-cell function may be partially mediated by inhibiting Th17 cell infiltration into pancreatic islets, and the resultant alleviation of islet inflammation.
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Affiliation(s)
- Qinqin Xu
- grid.33199.310000 0004 0368 7223Division of Endocrinology, Tongji Hospital, Huazhong University of Science and Technology, Jiefang Road 1095, Wuhan, 430030 Hubei Province People’s Republic of China ,Branch of National Clinical Research Center for Metabolic Diseases, Hubei, People’s Republic of China
| | - Xiaoling Zhang
- grid.33199.310000 0004 0368 7223Division of Endocrinology, Tongji Hospital, Huazhong University of Science and Technology, Jiefang Road 1095, Wuhan, 430030 Hubei Province People’s Republic of China ,Branch of National Clinical Research Center for Metabolic Diseases, Hubei, People’s Republic of China
| | - Tao Li
- grid.33199.310000 0004 0368 7223Division of Ophthalmology, Tongji Hospital, Huazhong University of Science and Technology, Jiefang Road 1095, Wuhan, 430030 Hubei Province People’s Republic of China
| | - Shiying Shao
- grid.33199.310000 0004 0368 7223Division of Endocrinology, Tongji Hospital, Huazhong University of Science and Technology, Jiefang Road 1095, Wuhan, 430030 Hubei Province People’s Republic of China ,Branch of National Clinical Research Center for Metabolic Diseases, Hubei, People’s Republic of China
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21
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Pugh GH, Fouladvand S, SantaCruz-Calvo S, Agrawal M, Zhang XD, Chen J, Kern PA, Nikolajczyk BS. T cells dominate peripheral inflammation in a cross-sectional analysis of obesity-associated diabetes. Obesity (Silver Spring) 2022; 30:1983-1994. [PMID: 36069294 PMCID: PMC9509440 DOI: 10.1002/oby.23528] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 05/16/2022] [Accepted: 06/07/2022] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Myeloid cells dominate metabolic disease-associated inflammation (metaflammation) in mouse obesity, but the contributions of myeloid cells to the peripheral inflammation that fuels sequelae of human obesity are untested. This study used unbiased approaches to rank contributions of myeloid and T cells to peripheral inflammation in people with obesity across the spectrum of metabolic health. METHODS Peripheral blood mononuclear cells (PBMCs) from people with obesity with or without prediabetes or type 2 diabetes were stimulated with T cell-targeting CD3/CD28 or myeloid-targeting lipopolysaccharide for 20 to 72 hours to assess cytokine production using Bio-Plex. Bioinformatic modeling ranked cytokines with respect to their predictive power for metabolic health. Intracellular tumor necrosis factor α was quantitated as a classical indicator of metaflammation. RESULTS Cytokines increased over 72 hours following T cell-, but not myeloid-, targeted stimulation to indicate that acute myeloid inflammation may shift to T cell inflammation over time. T cells contributed more tumor necrosis factor α to peripheral inflammation regardless of metabolic status. Bioinformatic combination of cytokines from all cohorts, stimuli, and time points indicated that T cell-targeted stimulation was most important for differentiating inflammation in diabetes, consistent with previous identification of a mixed T helper type 1/T helper type 17 cytokine profile in diabetes. CONCLUSIONS T cells dominate peripheral inflammation in obesity; therefore, targeting T cells may be an effective approach for prevention/management of metaflammation.
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Affiliation(s)
- Gabriella H. Pugh
- Department of Microbiology, Immunology, & Molecular
Genetics, University of Kentucky Lexington, Kentucky, USA
| | - Sajjad Fouladvand
- Department of Computer Science, University of Kentucky
Lexington, Kentucky, USA
| | - Sara SantaCruz-Calvo
- Department of Pharmacology and Nutritional Sciences,
University of Kentucky Lexington, Kentucky, USA
| | - Madhur Agrawal
- Department of Pharmacology and Nutritional Sciences,
University of Kentucky Lexington, Kentucky, USA
| | | | - Jin Chen
- Department of Computer Science, University of Kentucky
Lexington, Kentucky, USA
| | - Philip A. Kern
- Department of Internal Medicine, University of Kentucky
Lexington, Kentucky, USA
- Barnstable Brown Diabetes Center, University of Kentucky
Lexington, Kentucky, USA
| | - Barbara S. Nikolajczyk
- Department of Microbiology, Immunology, & Molecular
Genetics, University of Kentucky Lexington, Kentucky, USA
- Department of Pharmacology and Nutritional Sciences,
University of Kentucky Lexington, Kentucky, USA
- Barnstable Brown Diabetes Center, University of Kentucky
Lexington, Kentucky, USA
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22
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Bharath LP, Hart SN, Nikolajczyk BS. T-cell Metabolism as Interpreted in Obesity-associated Inflammation. Endocrinology 2022; 163:6657752. [PMID: 35932471 PMCID: PMC9756079 DOI: 10.1210/endocr/bqac124] [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: 05/24/2022] [Indexed: 11/19/2022]
Abstract
The appreciation of metabolic regulation of T-cell function has exploded over the past decade, as has our understanding of how inflammation fuels comorbidities of obesity, including type 2 diabetes. The likelihood that obesity fundamentally alters T-cell metabolism and thus chronic obesity-associated inflammation is high, but studies testing causal relationships remain underrepresented. We searched PubMed for key words including mitochondria, obesity, T cell, type 2 diabetes, cristae, fission, fusion, redox, and reactive oxygen species to identify foundational and more recent studies that address these topics or cite foundational work. We investigated primary papers cited by reviews found in these searches and highlighted recent work with >100 citations to illustrate the state of the art in understanding mechanisms that control metabolism and thus function of various T-cell subsets in obesity. However, "popularity" of a paper over the first 5 years after publication cannot assess long-term impact; thus, some likely important work with fewer citations is also highlighted. We feature studies of human cells, supplementing with studies from animal models that suggest future directions for human cell research. This approach identified gaps in the literature that will need to be filled before we can estimate efficacy of mitochondria-targeted drugs in clinical trials to alleviate pathogenesis of obesity-associated inflammation.
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Affiliation(s)
- Leena P Bharath
- Department of Nutrition and Public Health, Merrimack College, North Andover, MA 01845, USA
| | - Samantha N Hart
- Departments of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
| | - Barbara S Nikolajczyk
- Correspondence: Barbara S. Nikolajczyk, PhD, Healthy Kentucky Research Bldg. Rm. 217, 760 Press Ave, Lexington, KY 40536, USA.
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23
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Tan T, Xiang Y, Deng C, Cao C, Ren Z, Huang G, Zhou Z. Variable frequencies of peripheral T-lymphocyte subsets in the diabetes spectrum from type 1 diabetes through latent autoimmune diabetes in adults (LADA) to type 2 diabetes. Front Immunol 2022; 13:974864. [PMID: 36091068 PMCID: PMC9449581 DOI: 10.3389/fimmu.2022.974864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 08/08/2022] [Indexed: 11/13/2022] Open
Abstract
T lymphocytes are key players in the pathogenesis of autoimmune diabetes. We recruited subjects with T1D (n=81), LADA (n=82), T2D (n=95) and NGT (n=218) and analyzed the percentages of T-lymphocyte subsets, including T helper 1 (Th1), T helper 2 (Th2), T helper 17 (Th17), T cytotoxic 1 (Tc1), regulatory T cells (Tregs), effector T (Teff), naïve T, central memory T (Tcm), and effector memory T (Tem) cells by flow cytometry. LADA patients possessed similar frequencies of IFN-γ+CD4+ T (Th1), IFN-γ+CD8+ T and CD4+ Teff cells compared with T1D patients, but much lower than those of NGT subjects. Like T2D patients, LADA patients had increased frequencies of CD4+ Tem and CD8+ Tem cells with respect to T1D and NGT subjects. In LADA patients, Th2 cells were decreased while CD4+ Tcm cells were increased compared with NGT subjects. Notably, we observed significant negative correlations between the CD4+ Tcm cell frequency and C-peptide in LADA subjects. These data demonstrates that LADA patients possess T-cell subset changes resembling both T1D and T2D and represent the middle of the diabetes spectrum between T1D and T2D. Based on these T-cell subset alterations, we speculate that autoimmunity-induced β-cell destruction and inflammation-induced insulin resistance might both be involved in the pathogenesis of LADA.
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24
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Boland L, Bitterlich LM, Hogan AE, Ankrum JA, English K. Translating MSC Therapy in the Age of Obesity. Front Immunol 2022; 13:943333. [PMID: 35860241 PMCID: PMC9289617 DOI: 10.3389/fimmu.2022.943333] [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: 05/13/2022] [Accepted: 06/10/2022] [Indexed: 12/19/2022] Open
Abstract
Mesenchymal stromal cell (MSC) therapy has seen increased attention as a possible option to treat a number of inflammatory conditions including COVID-19 acute respiratory distress syndrome (ARDS). As rates of obesity and metabolic disease continue to rise worldwide, increasing proportions of patients treated with MSC therapy will be living with obesity. The obese environment poses critical challenges for immunomodulatory therapies that should be accounted for during development and testing of MSCs. In this review, we look to cancer immunotherapy as a model for the challenges MSCs may face in obese environments. We then outline current evidence that obesity alters MSC immunomodulatory function, drastically modifies the host immune system, and therefore reshapes interactions between MSCs and immune cells. Finally, we argue that obese environments may alter essential features of allogeneic MSCs and offer potential strategies for licensing of MSCs to enhance their efficacy in the obese microenvironment. Our aim is to combine insights from basic research in MSC biology and clinical trials to inform new strategies to ensure MSC therapy is effective for a broad range of patients.
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Affiliation(s)
- Lauren Boland
- Roy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, IA, United States
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, United States
| | - Laura Melanie Bitterlich
- Biology Department, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth, Ireland
| | - Andrew E. Hogan
- Biology Department, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth, Ireland
| | - James A. Ankrum
- Roy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, IA, United States
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA, United States
- *Correspondence: James A. Ankrum, ; Karen English,
| | - Karen English
- Biology Department, Maynooth University, Maynooth, Ireland
- Kathleen Lonsdale Institute for Human Health Research, Maynooth, Ireland
- *Correspondence: James A. Ankrum, ; Karen English,
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Taylor HA, Przemylska L, Clavane EM, Meakin PJ. BACE1: More than just a β-secretase. Obes Rev 2022; 23:e13430. [PMID: 35119166 PMCID: PMC9286785 DOI: 10.1111/obr.13430] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/04/2022] [Accepted: 01/16/2022] [Indexed: 02/06/2023]
Abstract
β-site amyloid precursor protein cleaving enzyme-1 (BACE1) research has historically focused on its actions as the β-secretase responsible for the production of β-amyloid beta, observed in Alzheimer's disease. Although the greatest expression of BACE1 is found in the brain, BACE1 mRNA and protein is also found in many cell types including pancreatic β-cells, adipocytes, hepatocytes, and vascular cells. Pathologically elevated BACE1 expression in these cells has been implicated in the development of metabolic diseases, including type 2 diabetes, obesity, and cardiovascular disease. In this review, we examine key questions surrounding the BACE1 literature, including how is BACE1 regulated and how dysregulation may occur in disease, and understand how BACE1 regulates metabolism via cleavage of a myriad of substrates. The phenotype of the BACE1 knockout mice models, including reduced weight gain, increased energy expenditure, and enhanced leptin signaling, proposes a physiological role of BACE1 in regulating energy metabolism and homeostasis. Taken together with the weight loss observed with BACE1 inhibitors in clinical trials, these data highlight a novel role for BACE1 in regulation of metabolic physiology. Finally, this review aims to examine the possibility that BACE1 inhibitors could provide a innovative treatment for obesity and its comorbidities.
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Affiliation(s)
- Hannah A Taylor
- Discovery & Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Lena Przemylska
- Discovery & Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Eva M Clavane
- Discovery & Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Paul J Meakin
- Discovery & Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
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Enos CW, Ramos VL, McLean RR, Lin TC, Foster N, Dube B, Van Voorhees AS. Cardiometabolic multimorbidity is common among patients with psoriasis and is associated with poorer outcomes compared to those without comorbidity.. J DERMATOL TREAT 2022; 33:2975-2982. [PMID: 35737885 DOI: 10.1080/09546634.2022.2089329] [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] [Indexed: 10/17/2022]
Abstract
BACKGROUND Associations between cardiometabolic multimorbidity and response to therapy in psoriasis are unknown. OBJECTIVE Determine the associations of multimorbidity with response to biologic treatment in psoriasis patients. METHODS CorEvitas Psoriasis Registry participants who initiated biologic therapy and had 6-months follow-up were stratified by 0, 1, 2+ comorbidities (diabetes, hypertension, hyperlipidemia). Adjusted odds ratios (95% CIs) were calculated overall and separately by biologic class (TNFi, IL-17i, IL-12/23i + IL-23i), to assess the likelihood of achieving response for the 1 and 2+ groups vs. 0. RESULTS Of 2,923 patients, 49.5%, 24.7% and 25.8% reported 0, 1 and 2+ comorbidities, respectively. Overall, likelihood of PASI75 was 18% (OR =0.82; 95%CI: 0.67, 1.00) and 23% (OR =0.77; 95%CI: 0.63, 0.96) lower in those with 1 and 2+ comorbidities, respectively, vs. 0. In those who initiated IL-17i, odds of PASI75 and PAS90 were 34% (OR =0.66; 95%CI: 0.48-0.91) and 35% (OR =0.65; 95%CI: 0.47-0.91) lower in the 2+ multimorbidity cohort. No significant associations were found among users of TNFi or IL-12/23i + IL-23i groups in the multimorbidity group. LIMITATIONS Patients may not be representative of all psoriasis patients. CONCLUSION Multimorbidity in psoriasis may decrease the likelihood of achieving treatment response to biologic therapy and should be considered when discussing treatment expectations with patients.
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Affiliation(s)
- Clinton W Enos
- Eastern Virginia Medical School Department of Dermatology
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27
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Cross-Talk between the Cytokine IL-37 and Thyroid Hormones in Modulating Chronic Inflammation Associated with Target Organ Damage in Age-Related Metabolic and Vascular Conditions. Int J Mol Sci 2022; 23:ijms23126456. [PMID: 35742902 PMCID: PMC9224418 DOI: 10.3390/ijms23126456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 02/04/2023] Open
Abstract
Chronic inflammation is considered to be the main mechanism contributing to the development of age-related metabolic and vascular conditions. The phases of chronic inflammation that mediate the progression of target organ damage in these conditions are poorly known, however. In particular, there is a paucity of data on the link between chronic inflammation and metabolic disorders. Based on some of our own results and recent developments in our understanding of age-related inflammation as a whole-body response, we discuss the hypothesis that cross-talk between the cytokine IL-37 and thyroid hormones could be the key regulatory mechanism that justifies the metabolic effects of chronic tissue-related inflammation. The cytokine IL-37 is emerging as a strong natural suppressor of the chronic innate immune response. The effect of this cytokine has been identified in reversing metabolic costs of chronic inflammation. Thyroid hormones are known to regulate energy metabolism. There is a close link between thyroid function and inflammation in elderly individuals. Nonlinear associations between IL-37 and thyroid hormones, considered within the wider clinical context, can improve our understanding of the phases of chronic inflammation that are associated with target organ damage in age-related metabolic and vascular conditions.
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28
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Increased Risk of COVID-19 in Patients with Diabetes Mellitus-Current Challenges in Pathophysiology, Treatment and Prevention. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19116555. [PMID: 35682137 PMCID: PMC9180541 DOI: 10.3390/ijerph19116555] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 05/10/2022] [Accepted: 05/25/2022] [Indexed: 01/08/2023]
Abstract
Coronavirus disease-COVID-19 (coronavirus disease 2019) has become the cause of the global pandemic in the last three years. Its etiological factor is SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus type 2). Patients with diabetes (DM-diabetes mellitus), in contrast to healthy people not suffering from chronic diseases, are characterised by higher morbidity and mortality due to COVID-19. Patients who test positive for SARCoV-2 are at higher risk of developing hyperglycaemia. In this paper, we present, analyse and summarize the data on possible mechanisms underlying the increased susceptibility and mortality of patients with diabetes mellitus in the case of SARS-CoV-2 infection. However, further research is required to determine the optimal therapeutic management of patients with diabetes and COVID-19.
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Zi C, He L, Yao H, Ren Y, He T, Gao Y. Changes of Th17 cells, regulatory T cells, Treg/Th17, IL-17 and IL-10 in patients with type 2 diabetes mellitus: a systematic review and meta-analysis. Endocrine 2022; 76:263-272. [PMID: 35397088 DOI: 10.1007/s12020-022-03043-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 03/19/2022] [Indexed: 12/17/2022]
Abstract
PURPOSE The aim of this study was to investigate the changes of Helper T cells 17 (Th17 cells), Regulatory T cells (Treg cells), Treg/Th17, Interleukin-17 (IL-17) and Interleukin-10 (IL-10) in patients with type 2 diabetes mellitus (T2DM). METHODS Four electronic resource databases were searched from their inception to 1 August 2021. Case-control studies about changes of Th17 cells, Treg cells, Treg/Th17, IL-17 and IL-10 in patients with T2DM were retrieved. We performed this meta-analysis via RevMan V.5.3 and Stata14. RESULTS 20 studies with 1242 individuals were included in the meta-analysis. Compared with the controls, the patients with T2DM had significantly increased levels of percentage of Th17 cells (SMD, 1.74; 95% CI, 0.47-3.01; p < 0.001), IL-17 (SMD, 2.17; 95% CI, 0.06-4.28; p < 0.001), IL-10 (SMD, 1.20; 95% CI, 0.81-1.59; p = 0.003), but decreased levels of percentage of Treg cells (SMD, -1.17; 95% CI, -2.22 to -0.13; p < 0.001) and Treg/Th17 ratio (SMD, -4.43; 95% CI, -7.07 to -1.78; p < 0.001). Subgroup analysis showed that percentage of CD4+CD25+FOXP3+ Tregs (SMD, -2.36; 95% CI, -3.19 to -1.52; p = 0.003) in patients was notably lower than controls. While not significant changes were found in the percentage of CD4+CD25+Tregs (SMD, 0.03; 95% CI, -0.34-0.40; p = 0.63) between patients and controls. For plasma or serum IL-10, a higher plasma IL-10 level (SMD,1.37; 95% CI, 0.92-1.82; p = 0.01) was observed in T2DM. While serum IL-10 (SMD, 0.73; 95% CI, 0.35-1.12; p = 0.79) had no obvious difference between patients and controls. For ELISA or flow cytometry, IL-10 (SMD, 1.2; 95% CI, 0.71-1.70; p = 0.001) was higher in T2DM patients by using detection method of ELISA. Yet IL-10 using flow cytometry and subgroup analysis of IL-17 had no significant differences. CONCLUSIONS Adaptive immune system indeed plays an essential role in the process of T2DM. Imbalance between Th17 and Treg triggers pro-inflammatory environment in patients with T2DM.
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Affiliation(s)
- Changyan Zi
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, PR China.
| | - Lisha He
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, PR China.
| | - Huan Yao
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, PR China
| | - Yuan Ren
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, PR China
| | - Tingting He
- School of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, 611137, Chengdu, PR China
| | - Yongxiang Gao
- School of International Education, Chengdu University of Traditional Chinese Medicine, 610075, Chengdu, PR China.
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Scherer PE, Kirwan JP, Rosen CJ. Post-acute sequelae of COVID-19: A metabolic perspective. eLife 2022; 11:78200. [PMID: 35318939 PMCID: PMC8942467 DOI: 10.7554/elife.78200] [Citation(s) in RCA: 39] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 03/16/2022] [Indexed: 12/16/2022] Open
Abstract
The SARS-CoV-2 pandemic continues to rage around the world. At the same time, despite strong public health measures and high vaccination rates in some countries, a post-COVID-19 syndrome has emerged which lacks a clear definition, prevalence, or etiology. However, fatigue, dyspnea, brain fog, and lack of smell and/or taste are often characteristic of patients with this syndrome. These are evident more than a month after infection, and are labeled as Post-Acute Sequelae of CoV-2 (PASC) or commonly referred to as long-COVID. Metabolic dysfunction (i.e., obesity, insulin resistance, and diabetes mellitus) is a predisposing risk factor for severe acute COVID-19, and there is emerging evidence that this factor plus a chronic inflammatory state may predispose to PASC. In this article, we explore the potential pathogenic metabolic mechanisms that could underly both severe acute COVID-19 and PASC, and then consider how these might be targeted for future therapeutic approaches.
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Affiliation(s)
- Philipp E Scherer
- Touchstone Diabetes Center University of Texas Southwestern, Dallas, United States
| | - John P Kirwan
- Pennington Biomedical Research Center, Baton Rouge, United States
| | - Clifford J Rosen
- Center for Clinical and Translational Research, Maine Medical Center Research Institute, Scarborough, United States
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Bharath LP, Regan T, Conway R. Regulation of Immune Cell Function by Nicotinamide Nucleotide Transhydrogenase. Am J Physiol Cell Physiol 2022; 322:C666-C673. [PMID: 35138175 PMCID: PMC8977145 DOI: 10.1152/ajpcell.00607.2020] [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] [Indexed: 11/22/2022]
Abstract
Redox homeostasis is elemental for the normal physiology of all cell types. Cells use multiple mechanisms to regulate the redox balance tightly. The onset and progression of many metabolic and aging-associated diseases occur due to the dysregulation of redox homeostasis. Thus, it is critical to identify and therapeutically target mechanisms that precipitate abnormalities in redox balance. Reactive oxygen species (ROS) produced within the immune cells regulate homeostasis, hyperimmune and hypoimmune cell responsiveness, apoptosis, immune response to pathogens, and tumor immunity. Immune cells have both cytosolic and organelle-specific redox regulatory systems to maintain appropriate levels of ROS. Nicotinamide nucleotide transhydrogenase (NNT) is an essential mitochondrial redox regulatory protein. Dysregulation of NNT function prevents immune cells from mounting an adequate immune response to pathogens, promotes a chronic inflammatory state associated with aging and metabolic diseases, and initiates conditions related to a dysregulated immune system such as autoimmunity. While many studies have reported on NNT in different cell types, including cancer cells, relatively few studies have explored NNT in immune cells. This review provides an overview of NNT and focuses on the current knowledge of NNT in the immune cells.
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Affiliation(s)
- Leena P Bharath
- Department of Nutrition and Public Health, Merrimack College, North Andover, Massachusetts, United States
| | - Thomas Regan
- Department of Nutrition and Public Health, Merrimack College, North Andover, Massachusetts, United States
| | - Rachel Conway
- Department of Nutrition and Public Health, Merrimack College, North Andover, Massachusetts, United States
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Liu R, Pugh GH, Tevonian E, Thompson K, Lauffenburger DA, Kern PA, Nikolajczyk BS. Regulatory T Cells Control Effector T Cell Inflammation in Human Prediabetes. Diabetes 2022; 71:264-274. [PMID: 34737186 PMCID: PMC8914282 DOI: 10.2337/db21-0659] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 11/01/2021] [Indexed: 02/03/2023]
Abstract
A disparate array of plasma/serum markers provides evidence for chronic inflammation in human prediabetes, a condition that is most closely replicated by standard mouse models of obesity and metaflammation. These remain largely nonactionable and contrast with our rich understanding of inflammation in human type 2 diabetes. New data show that inflammatory profiles produced by CD4+ T cells define human prediabetes as a unique inflammatory state. Regulatory T cells (Treg) control mitochondrial function and cytokine production by CD4+ effector T cells (Teff) in prediabetes and type 2 diabetes by supporting T helper (Th)17 or Th1 cytokine production, respectively. These data suggest that Treg control of Teff metabolism regulates inflammation differentially in prediabetes compared with type 2 diabetes. Queries of genes that impact mitochondrial function or pathways leading to transcription of lipid metabolism genes identified the fatty acid importer CD36 as highly expressed in Treg but not Teff from subjects with prediabetes. Pharmacological blockade of CD36 in Treg from subjects with prediabetes decreased Teff production of the Th17 cytokines that differentiate overall prediabetes inflammation. We conclude that Treg control CD4+ T cell cytokine profiles through mechanisms determined, at least in part, by host metabolic status. Furthermore, Treg CD36 uniquely promotes Th17 cytokine production by Teff in prediabetes.
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Affiliation(s)
- Rui Liu
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY
| | - Gabriella H. Pugh
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY
| | - Erin Tevonian
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA
| | - Katherine Thompson
- Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY
| | | | - Philip A. Kern
- Department of Medicine, University of Kentucky, Lexington, KY
- Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, KY
| | - Barbara S. Nikolajczyk
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY
- Barnstable Brown Diabetes and Obesity Research Center, University of Kentucky, Lexington, KY
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY
- Corresponding author: Barbara S. Nikolajczyk,
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Endometrial cytokines in patients with and without endometriosis evaluated for infertility. Fertil Steril 2022; 117:629-640. [DOI: 10.1016/j.fertnstert.2021.11.024] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 11/10/2021] [Accepted: 11/11/2021] [Indexed: 12/14/2022]
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Enos CW, Ramos VL, McLean RR, Lin TC, Foster N, Dube B, Van Voorhees AS. Comorbid obesity and history of diabetes are independently associated with poorer treatment response to biologics at 6 months: A prospective analysis in Corrona Psoriasis Registry. J Am Acad Dermatol 2022; 86:68-76. [PMID: 34256035 DOI: 10.1016/j.jaad.2021.06.883] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 05/07/2021] [Accepted: 06/26/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Psoriasis is associated with comorbid systemic metabolic disease. OBJECTIVE To assess possible associations of comorbid obesity, history of diabetes, hypertension, and hyperlipidemia with response to biologic treatment at 6 months among patients in CorEvitas' Psoriasis Registry. METHODS Participants included 2924 patients initiating biologic therapy (tumour necrosis factor inhibitors [TNFi], interleukin [IL]-17i, IL-12/23i, or IL-23i) with baseline and 6-month follow-up visits available. Logistic regressions resulted in adjusted odd ratios (OR) and 95% confidence intervals (CI) for achievement of response in select outcomes for those with obesity and history of diabetes, hypertension, and hyperlipidemia relative to those without each. RESULTS Overall, obesity reduced by 25% to 30% odds of achieving PASI75 (OR, 0.75; 95% CI, 0.64-0.88) and PASI90 (OR, 0.70; 95% CI, 0.59-0.81). History of diabetes reduced odds of achieving PASI75 by 31% (OR, 0.69; 95% CI, 0.56-0.85) and PASI90 by 21% (OR, 0.79; 95% CI, 0.63-0.98). Obesity was associated with lower response to TNFi and IL-17i classes. Independent of obesity, diabetes was associated with poorer outcomes when on IL-17i therapy and hypertension, to a lesser extent, when on the TNFi class. No significant associations were found in the hyperlipidemia group. LIMITATIONS The study assessed only short-term effectiveness and small sample sizes limited the power to detect differences. CONCLUSION Assessment of comorbid disease burden is important for improved likelihoods of achieving treatment response with biologics.
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Affiliation(s)
- Clinton W Enos
- Eastern Virginia Medical School Department of Dermatology, Norfolk, Virginia
| | - Vanessa L Ramos
- Eastern Virginia Medical School Department of Dermatology, Norfolk, Virginia
| | | | | | | | | | - Abby S Van Voorhees
- Eastern Virginia Medical School Department of Dermatology, Norfolk, Virginia.
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Artemniak-Wojtowicz D, Kucharska AM, Stelmaszczyk-Emmel A, Majcher A, Pyrżak B. Changes of Peripheral Th17 Cells Subset in Overweight and Obese Children After Body Weight Reduction. Front Endocrinol (Lausanne) 2022; 13:917402. [PMID: 35873001 PMCID: PMC9299423 DOI: 10.3389/fendo.2022.917402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Obesity has been a growing problem in young patients leading to serious metabolic complications. There are many studies supporting the idea, that obesity should be considered as a chronic inflammation closely associated with immune system alterations. Th17 subpopulation is strongly involved in this process. The aim of our study was to evaluate circulating Th17 cells in overweight and obese children and explore the relationships between Th17 subset and metabolic parameters. METHODS We evaluated peripheral Th17 cells in fresh peripheral blood samples from 27 overweight and obese and 15 normal-weight children. Th17 cells were identified by flow cytometry using monoclonal antibody and intracellular IL-17A staining. Th17 cells were defined as CD3+CD4+CD196+IL-17Aic+. The analysis involved anthropometric and metabolic parameters measured at baseline and three months after the change of lifestyle and diet. We evaluated the relationship between metabolic parameters and Th17 cells. RESULTS In overweight and obese children we found significantly higher Th17 cells percentage compared to normal weight controls (median 0.097% (0.044 - 0.289) vs 0.041% (0.023 - 0.099), p = 0.048). The percentage of Th17 cells decreased statistically significantly in children who reduced weight after the intervention (0.210% (0.143 - 0.315) vs 0.039% (0.028 - 0.106), p = 0.004). In this group we also noticed statistically significant reduction of TC and LDL-C concentration (p = 0.01, p = 0.04, respectively). CONCLUSIONS Obesity in children is associated with increased percentage of peripheral Th17 cells. Weight reduction leads to significant decrease of circulating Th17 cells and improvement of lipid parameters. This significant reduction of proinflammatory Th17 cells is a promising finding suggesting that obesity-induced inflammation in children could be relatively easily reversible.
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Affiliation(s)
- Dorota Artemniak-Wojtowicz
- Department of Pediatrics and Endocrinology, Medical University of Warsaw, Warsaw, Poland
- *Correspondence: Dorota Artemniak-Wojtowicz, ; Anna M. Kucharska,
| | - Anna M. Kucharska
- Department of Pediatrics and Endocrinology, Medical University of Warsaw, Warsaw, Poland
- *Correspondence: Dorota Artemniak-Wojtowicz, ; Anna M. Kucharska,
| | - Anna Stelmaszczyk-Emmel
- Department of Laboratory Diagnostics and Clinical Immunology of Developmental Age, Medical University of Warsaw, Warsaw, Poland
| | - Anna Majcher
- Department of Pediatrics and Endocrinology, Medical University of Warsaw, Warsaw, Poland
| | - Beata Pyrżak
- Department of Pediatrics and Endocrinology, Medical University of Warsaw, Warsaw, Poland
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Zhang W, Gao R, Rong X, Zhu S, Cui Y, Liu H, Li M. Immunoporosis: Role of immune system in the pathophysiology of different types of osteoporosis. Front Endocrinol (Lausanne) 2022; 13:965258. [PMID: 36147571 PMCID: PMC9487180 DOI: 10.3389/fendo.2022.965258] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
Osteoporosis is a skeletal system disease characterized by low bone mass and altered bone microarchitecture, with an increased risk of fractures. Classical theories hold that osteoporosis is essentially a bone remodeling disorder caused by estrogen deficiency/aging (primary osteoporosis) or secondary to diseases/drugs (secondary osteoporosis). However, with the in-depth understanding of the intricate nexus between both bone and the immune system in recent decades, the novel field of "Immunoporosis" was proposed by Srivastava et al. (2018, 2022), which delineated and characterized the growing importance of immune cells in osteoporosis. This review aimed to summarize the response of the immune system (immune cells and inflammatory factors) in different types of osteoporosis. In postmenopausal osteoporosis, estrogen deficiency-mediated alteration of immune cells stimulates the activation of osteoclasts in varying degrees. In senile osteoporosis, aging contributes to continuous activation of the immune system at a low level which breaks immune balance, ultimately resulting in bone loss. Further in diabetic osteoporosis, insulin deficiency or resistance-induced hyperglycemia could lead to abnormal regulation of the immune cells, with excessive production of proinflammatory factors, resulting in osteoporosis. Thus, we reviewed the pathophysiology of osteoporosis from a novel insight-immunoporosis, which is expected to provide a specific therapeutic target for different types of osteoporosis.
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Affiliation(s)
- Weidong Zhang
- Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
| | - Ruihan Gao
- Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
| | - Xing Rong
- Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
| | - Siqi Zhu
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
- Affiliated Hospital 2, Jinzhou Medical University, Jinzhou, China
| | - Yajun Cui
- Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
| | - Hongrui Liu
- Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
- *Correspondence: Minqi Li, ; Hongrui Liu,
| | - Minqi Li
- Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Department of Bone Metabolism, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University, Jinan, China
- Center of Osteoporosis and Bone Mineral Research, Shandong University, Jinan, China
- *Correspondence: Minqi Li, ; Hongrui Liu,
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SantaCruz-Calvo S, Bharath L, Pugh G, SantaCruz-Calvo L, Lenin RR, Lutshumba J, Liu R, Bachstetter AD, Zhu B, Nikolajczyk BS. Adaptive immune cells shape obesity-associated type 2 diabetes mellitus and less prominent comorbidities. Nat Rev Endocrinol 2022; 18:23-42. [PMID: 34703027 PMCID: PMC11005058 DOI: 10.1038/s41574-021-00575-1] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/17/2021] [Indexed: 02/07/2023]
Abstract
Obesity and type 2 diabetes mellitus (T2DM) are increasing in prevalence owing to decreases in physical activity levels and a shift to diets that include addictive and/or high-calorie foods. These changes are associated with the adoption of modern lifestyles and the presence of an obesogenic environment, which have resulted in alterations to metabolism, adaptive immunity and endocrine regulation. The size and quality of adipose tissue depots in obesity, including the adipose tissue immune compartment, are critical determinants of overall health. In obesity, chronic low-grade inflammation can occur in adipose tissue that can progress to systemic inflammation; this inflammation contributes to the development of insulin resistance, T2DM and other comorbidities. An improved understanding of adaptive immune cell dysregulation that occurs during obesity and its associated metabolic comorbidities, with an appreciation of sex differences, will be critical for repurposing or developing immunomodulatory therapies to treat obesity and/or T2DM-associated inflammation. This Review critically discusses how activation and metabolic reprogramming of lymphocytes, that is, T cells and B cells, triggers the onset, development and progression of obesity and T2DM. We also consider the role of immunity in under-appreciated comorbidities of obesity and/or T2DM, such as oral cavity inflammation, neuroinflammation in Alzheimer disease and gut microbiome dysbiosis. Finally, we discuss previous clinical trials of anti-inflammatory medications in T2DM and consider the path forward.
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Affiliation(s)
- Sara SantaCruz-Calvo
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA.
| | - Leena Bharath
- Department of Nutrition and Public Health, Merrimack College, North Andover, MA, USA
| | - Gabriella Pugh
- Department of Microbiology, Immunology and Molecular Genetics, University of Kentucky, Lexington, KY, USA
| | - Lucia SantaCruz-Calvo
- Department of Chemistry and Food Technology, Technical University of Madrid, Madrid, Spain
| | - Raji Rajesh Lenin
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Jenny Lutshumba
- Department of Neuroscience, University of Kentucky, Lexington, KY, USA
| | - Rui Liu
- Department of Pharmaceutical Sciences, University of Kentucky, Lexington, KY, USA
| | | | - Beibei Zhu
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA
| | - Barbara S Nikolajczyk
- Department of Pharmacology and Nutritional Sciences and the Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, USA.
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Frieler RA, Vigil TM, Song J, Leung C, Lumeng CN, Mortensen RM. High-fat and high-sodium diet induces metabolic dysfunction in the absence of obesity. Obesity (Silver Spring) 2021; 29:1868-1881. [PMID: 34549547 PMCID: PMC8571049 DOI: 10.1002/oby.23264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/09/2021] [Accepted: 07/13/2021] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Excess dietary fat and sodium (NaCl) are both associated with obesity and metabolic dysfunction. In mice, high NaCl has been shown to block high-fat (HF) diet-induced weight gain. Here, the impact of an HF/NaCl diet on metabolic function in the absence of obesity was investigated. METHODS Wild-type mice were administered chow, NaCl (4%), HF, and HF/NaCl diets. Metabolic analysis was performed by measuring fasted blood glucose and insulin levels and by glucose tolerance test and insulin tolerance test. RESULTS After 10 weeks on diets, male and female mice on the HF diet gained weight, and HF/NaCl mice had significantly reduced weight gain similar to chow-fed mice. In the absence of obesity, HF/NaCl mice had significantly elevated fasting blood glucose and impaired glucose control during glucose tolerance tests. Both NaCl and HF/NaCl mice had decreased pancreas and β-cell mass. Administration of NaCl in drinking water did not protect mice from HF-diet-induced weight gain and obesity. Further analysis revealed that longer administration of HF/NaCl diets for 20 weeks resulted in significant weight gain and insulin resistance. CONCLUSIONS The data demonstrate that despite early inhibitory effects on fat deposition and weight gain, an HF/NaCl diet does not prevent the metabolic consequences of HF diet consumption.
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Affiliation(s)
- Ryan A. Frieler
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI
| | - Thomas M. Vigil
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI
| | - Jianrui Song
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI
| | - Christy Leung
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI
| | - Carey N. Lumeng
- Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, MI
| | - Richard M. Mortensen
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, MI
- Department of Internal Medicine, Division of Metabolism, Endocrinology, and Diabetes, University of Michigan Medical School, Ann Arbor, MI
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI
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Kantroo V, Kanwar MS, Goyal P, Rosha D, Modi N, Bansal A, Ansari AP, Wangnoo SK, Sobti S, Kansal S, Chawla R, Jasuja S, Gupta I. Mortality and Clinical Outcomes among Patients with COVID-19 and Diabetes. Med Sci (Basel) 2021; 9:medsci9040065. [PMID: 34842758 PMCID: PMC8628982 DOI: 10.3390/medsci9040065] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 10/19/2021] [Accepted: 10/22/2021] [Indexed: 12/11/2022] Open
Abstract
Background Diabetes mellitus (DM) is a decisive risk factor for severe illness in coronavirus disease 2019 (COVID-19). India is home to a large number of people with DM, and many of them were infected with COVID-19. It is critical to understand the impact of DM on mortality and other clinical outcomes of COVID-19 infection from this region. Aims The primary objective of our study was to analyze the mortality rate in people with DM infected with COVID-19. The secondary objectives were to assess the effect of various comorbidities on mortality and study the impact of DM on other clinical outcomes. Methods This is a retrospective study of COVID-19 infected patients admitted to a tertiary care hospital in north India in the early phase of the pandemic. Results Of the 1211 cases admitted, 19 were excluded because of incomplete data, and 1192 cases were finally considered for analysis. DM constituted 26.8% of total patients. The overall mortality rate was 6.1%, and the rate was 10.7% in the presence of diabetes (p < 0.01, OR 2.55). In univariate analysis, increased age, chronic kidney disease (CKD), coronary artery disease (CAD), stroke, and cancer were associated with mortality. On multiple logistic regression, the independent predictors of mortality were CAD, CKD, and cancer. Breathlessness and low SpO2 at presentation, extensive involvement in CXR, and elevated ANC/ALC ratio were also significantly associated with mortality. Conclusions The presence of comorbidities such as DM, hypertension, CAD, CKD, and cancer strongly predict the risk of mortality in COVID-19 infection. Early triaging and aggressive therapy of patients with these comorbidities can optimize clinical outcomes.
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Affiliation(s)
- Viny Kantroo
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
- Correspondence:
| | - Manjit S. Kanwar
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Piyush Goyal
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Deepak Rosha
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Nikhil Modi
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Avdhesh Bansal
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Athar Parvez Ansari
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Subhash Kumar Wangnoo
- Department of Apollo Centre of Diabetes and Endocrinology, Indraprastha Apollo Hospitals, New Delhi 110076, India;
| | - Sanjay Sobti
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Sudha Kansal
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Rajesh Chawla
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
| | - Sanjiv Jasuja
- Department of Nephrology and Kidney Transplant, Indraprastha Apollo Hospitals, New Delhi 110076, India;
| | - Ishan Gupta
- Department of Respiratory, Critical Care and Sleep Medicine, Indraprastha Apollo Hospitals, New Delhi 110076, India; (M.S.K.); (P.G.); (D.R.); (N.M.); (A.B.); (A.P.A.); (S.S.); (S.K.); (R.C.); (I.G.)
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The impact of the Th17:Treg axis on the IgA-Biome across the glycemic spectrum. PLoS One 2021; 16:e0258812. [PMID: 34669745 PMCID: PMC8528330 DOI: 10.1371/journal.pone.0258812] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 10/05/2021] [Indexed: 11/24/2022] Open
Abstract
Secretory IgA (SIgA) is released into mucosal surfaces where its function extends beyond that of host defense to include the shaping of resident microbial communities by mediating exclusion/inclusion of respective microbes and regulating bacterial gene expression. In this capacity, SIgA acts as the fulcrum on which host immunity and the health of the microbiota are balanced. We recently completed an analysis of the gut and salivary IgA-Biomes (16S rDNA sequencing of SIgA-coated/uncoated bacteria) in Mexican-American adults that identified IgA-Biome differences across the glycemic spectrum. As Th17:Treg ratio imbalances are associated with gut microbiome dysbiosis and chronic inflammatory conditions such as type 2 diabetes, the present study extends our prior work by examining the impact of Th17:Treg ratios (pro-inflammatory:anti-inflammatory T-cell ratios) and the SIgA response (Th17:Treg-SIgA axis) in shaping microbial communities. Examining the impact of Th17:Treg ratios (determined by epigenetic qPCR lymphocyte subset quantification) on the IgA-Biome across diabetes phenotypes identified a proportional relationship between Th17:Treg ratios and alpha diversity in the stool IgA-Biome of those with dysglycemia, significant changes in community composition of the stool and salivary microbiomes across glycemic profiles, and genera preferentially abundant by T-cell inflammatory phenotype. This is the first study to associate epigenetically quantified Th17:Treg ratios with both the larger and SIgA-fractionated microbiome, assess these associations in the context of a chronic inflammatory disease, and offers a novel frame through which to evaluate mucosal microbiomes in the context of host responses and inflammation.
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Zhang S, Gang X, Yang S, Cui M, Sun L, Li Z, Wang G. The Alterations in and the Role of the Th17/Treg Balance in Metabolic Diseases. Front Immunol 2021; 12:678355. [PMID: 34322117 PMCID: PMC8311559 DOI: 10.3389/fimmu.2021.678355] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 06/22/2021] [Indexed: 12/17/2022] Open
Abstract
Chronic inflammation plays an important role in the development of metabolic diseases. These include obesity, type 2 diabetes mellitus, and metabolic dysfunction-associated fatty liver disease. The proinflammatory environment maintained by the innate immunity, including macrophages and related cytokines, can be influenced by adaptive immunity. The function of T helper 17 (Th17) and regulatory T (Treg) cells in this process has attracted attention. The Th17/Treg balance is regulated by inflammatory cytokines and various metabolic factors, including those associated with cellular energy metabolism. The possible underlying mechanisms include metabolism-related signaling pathways and epigenetic regulation. Several studies conducted on human and animal models have shown marked differences in and the important roles of Th17/Treg in chronic inflammation associated with obesity and metabolic diseases. Moreover, Th17/Treg seems to be a bridge linking the gut microbiota to host metabolic disorders. In this review, we have provided an overview of the alterations in and the functions of the Th17/Treg balance in metabolic diseases and its role in regulating immune response-related glucose and lipid metabolism.
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Affiliation(s)
- Siwen Zhang
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Xiaokun Gang
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Shuo Yang
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Mengzhao Cui
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Lin Sun
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Zhuo Li
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
| | - Guixia Wang
- Department of Endocrinology & Metabolism, The First Hospital of Jilin University, Changchun, China
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Lutshumba J, Nikolajczyk BS, Bachstetter AD. Dysregulation of Systemic Immunity in Aging and Dementia. Front Cell Neurosci 2021; 15:652111. [PMID: 34239415 PMCID: PMC8258160 DOI: 10.3389/fncel.2021.652111] [Citation(s) in RCA: 52] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 05/28/2021] [Indexed: 12/13/2022] Open
Abstract
Neuroinflammation and the tissue-resident innate immune cells, the microglia, respond and contribute to neurodegenerative pathology. Although microglia have been the focus of work linking neuroinflammation and associated dementias like Alzheimer's Disease, the inflammatory milieu of brain is a conglomerate of cross-talk amongst microglia, systemic immune cells and soluble mediators like cytokines. Age-related changes in the inflammatory profile at the levels of both the brain and periphery are largely orchestrated by immune system cells. Strong evidence indicates that both innate and adaptive immune cells, the latter including T cells and B cells, contribute to chronic neuroinflammation and thus dementia. Neurodegenerative hallmarks coupled with more traditional immune system stimuli like infection or injury likely combine to trigger and maintain persistent microglial and thus brain inflammation. This review summarizes age-related changes in immune cell function, with special emphasis on lymphocytes as a source of inflammation, and discusses how such changes may potentiate both systemic and central nervous system inflammation to culminate in dementia. We recap the understudied area of AD-associated changes in systemic lymphocytes in greater detail to provide a unifying perspective of inflammation-fueled dementia, with an eye toward evidence of two-way communication between the brain parenchyma and blood immune cells. We focused our review on human subjects studies, adding key data from animal models as relevant.
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Affiliation(s)
- Jenny Lutshumba
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY, United States
- Department of Neuroscience, University of Kentucky, Lexington, KY, United States
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
| | - Barbara S. Nikolajczyk
- Department of Pharmacology and Nutritional Science, University of Kentucky, Lexington, KY, United States
- Barnstable Brown Diabetes and Obesity Center, University of Kentucky, Lexington, KY, United States
| | - Adam D. Bachstetter
- Spinal Cord and Brain Injury Research Center, University of Kentucky, Lexington, KY, United States
- Department of Neuroscience, University of Kentucky, Lexington, KY, United States
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
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Long X, Zeng X, Tan F, Yi R, Pan Y, Zhou X, Mu J, Zhao X. Lactobacillus plantarum KFY04 prevents obesity in mice through the PPAR pathway and alleviates oxidative damage and inflammation. Food Funct 2021; 11:5460-5472. [PMID: 32490861 DOI: 10.1039/d0fo00519c] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this study, lactic acid bacterium, Lactobacillus plantarum KFY04, was isolated from Xinjiang yogurt, and it was used to intervene in obese mice maintained on a 45% fat diet, and we compared its effects to those of a commercial strain, LDSB, and l-carnitine. The results showed that the LP-KFY04 intervention mice gained weight more slowly and had lower liver, epididymal adipose, and perirenal adipose tissue indices when compared to the other high-fat groups. Moreover, the LP-KFY04 can reduce the formation of fat vacuoles in the liver, while also reducing adipocyte differentiation and volume, and LP-KFY04 groups had the lowest liver and serum AST, ALT, TG, and TC levels and lowest serum LDL-C and highest HDL-C levels among the groups maintained on a high-fat diet. LP-KFY04 was also shown to mitigate obesity-associated oxidative damage and inflammatory responses. Additionally, quantitative real-time PCR and western blot analysis examining liver and adipose tissue expression of PPAR-α, CYP7A1, CPT1, and LPL showed an increased expression in the LP-KFY04 groups while decreased expression levels of PPAR-γ and C/EBPα relative to the other high-fat diet groups. These results show that of the different interventions, LP-KFY04 was the most effective at mitigating the effects of obesity than LDSB and l-carnitine. The results confirmed that LP-KEY04 has better anti-obesity, anti-oxidative, and anti-inflammatory effects than current fermentation strains. It indicates LP-KFY04 is a fermentation strain with potential practical value and high functionality, and it shows that a fermentation strain should not only have good fermentation performance, but, more importantly, it must provide more functionality on the basis of fermentation.
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Affiliation(s)
- Xingyao Long
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, P.R. China. and Department of Food Science and Biotechnology, Cha University, Seongnam 13488, South Korea
| | - Xiaofei Zeng
- Department of Cardiothoracic Surgery, First Affiliated Hospital of Chengdu Medical College, Chengdu 610500, P.R. China
| | - Fang Tan
- Department of Public Health, Our Lady of Fatima University, Valenzuela 838, Philippines
| | - Ruokun Yi
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, P.R. China.
| | - Yanni Pan
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, P.R. China. and Department of Food Science and Biotechnology, Cha University, Seongnam 13488, South Korea
| | - Xianrong Zhou
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, P.R. China.
| | - Jianfei Mu
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, P.R. China.
| | - Xin Zhao
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing Engineering Research Center of Functional Food, Chongqing Engineering Laboratory for Research and Development of Functional Food, Chongqing University of Education, Chongqing 400067, P.R. China.
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Chang YC, Hee SW, Chuang LM. T helper 17 cells: A new actor on the stage of type 2 diabetes and aging? J Diabetes Investig 2021; 12:909-913. [PMID: 33686797 PMCID: PMC8169348 DOI: 10.1111/jdi.13541] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/03/2021] [Accepted: 03/05/2021] [Indexed: 12/18/2022] Open
Affiliation(s)
- Yi-Cheng Chang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Medical Genomics and Proteomics, National Taiwan University, Taipei, Taiwan.,Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Siow-Wey Hee
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Lee-Ming Chuang
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Molecular Medicine, National Taiwan University, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, National Taiwan University, Taipei, Taiwan
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45
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Rahmani-Kukia N, Abbasi A. Physiological and Immunological Causes of the Susceptibility of Chronic Inflammatory Patients to COVID-19 Infection: Focus on Diabetes. Front Endocrinol (Lausanne) 2021; 12:576412. [PMID: 33746897 PMCID: PMC7971178 DOI: 10.3389/fendo.2021.576412] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 01/19/2021] [Indexed: 12/14/2022] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has recently emerged, which was then spread rapidly in more than 190 countries worldwide so far. According to the World Health Organization, 3,232,062 global cases of COVID-19 were confirmed on April 30th with a mortality rate of 3.4%. Notably, the symptoms are almost similar to those of flu such as fever, cough, and fatigue. Unfortunately, the global rates of morbidity and mortality caused by this disease are more and still increasing on a daily basis. The rates for patients suffering from inflammatory diseases like diabetes, is even further, due to their susceptibility to the pathogenesis of COVID-19. In this review, we attempted to focus on diabetes to clarify the physiological and immunological characteristics of diabetics before and after the infection with COVID-19. We hope these conceptions could provide a better understanding of the mechanisms involved in COVID-19 susceptibility and increase the awareness of risk to motivate behavior changes in vulnerable people for enhancing the prevention. Up to now, the important role of immune responses, especially the innate ones, in the development of the worst signs in COVID-19 infection have been confirmed. Therefore, to better control patients with COVID-19, it is recommended to consider a history of chronic inflammatory diseases as well as the way of controlling immune response in these patients.
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Affiliation(s)
- Nasim Rahmani-Kukia
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ardeshir Abbasi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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46
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Hasiakos S, Gwack Y, Kang M, Nishimura I. Calcium Signaling in T Cells and Chronic Inflammatory Disorders of the Oral Cavity. J Dent Res 2021; 100:693-699. [PMID: 33541200 DOI: 10.1177/0022034521990652] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Acute immune responses to microbial insults in the oral cavity often progress to chronic inflammatory diseases such as periodontitis and apical periodontitis. Chronic oral inflammation causes destruction of the periodontium, potentially leading to loss of the dentition. Previous investigations have demonstrated that the composition of oral immune cells, rather than the overall extent of cellular infiltration, determines the pathological development of chronic inflammation. The role of T lymphocyte populations, including Th1, Th2, Th17, and Treg cells, has been extensively described. Studies now propose pathogenic Th17 cells as a distinct subset, uniquely classifiable from traditional Th17 populations. In situ differentiation of pathogenic Th17 cells has been verified as a source of destructive inflammation, which critically drives pathogenesis in chronic inflammatory diseases such as diabetes, rheumatoid arthritis, and inflammatory bowel disease. Pathogenic Th17 cells resemble a Th1 penotype and produce not only interleukin 17 (IL-17) but also γ-interferon (IFN-γ) and granulocyte-macrophage colony-stimulating factor (GM-CSF). The proinflammatory cytokine-specific mechanisms known to induce IL-17 expression in Th17 cells are well characterized; however, differentiation mechanisms that lead to pathogenic Th17 cells are less understood. Recently, Ca2+ signaling through Ca2+ release-activated Ca2+ channels (CRAC) in T cells has been uncovered as a major signaling axis involved in the regulation of T-cell-mediated chronic inflammation. In particular, pathogenic Th17 cell-mediated immunological diseases appear to be effectively targeted via such Ca2+ signaling pathways. Pathogenic plasticity of Th17 cells has been extensively illustrated in autoimmune and chronic inflammatory diseases. Although their specific causal relationship to oral infection-induced chronic inflammatory diseases is not fully established, pathogenic Th17 cells may be involved in the underlining mechanism. This review highlights the current understanding of T-cell phenotype regulation, calcium signaling pathways in this event, and the potential role of pathogenic Th17 cells in chronic inflammatory disorders of the oral cavity.
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Affiliation(s)
- S Hasiakos
- Division of Oral Biology and Medicine, UCLA School of Dentistry, Los Angeles, CA, USA.,Department of Physiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Y Gwack
- Department of Physiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - M Kang
- Section of Endodontics, UCLA School of Dentistry, Los Angeles, CA, USA
| | - I Nishimura
- Division of Oral Biology and Medicine, UCLA School of Dentistry, Los Angeles, CA, USA.,Weintraub Center for Reconstructive Biotechnology, UCLA School of Dentistry, Los Angeles, CA, USA
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Roberts J, Pritchard AL, Treweeke AT, Rossi AG, Brace N, Cahill P, MacRury SM, Wei J, Megson IL. Why Is COVID-19 More Severe in Patients With Diabetes? The Role of Angiotensin-Converting Enzyme 2, Endothelial Dysfunction and the Immunoinflammatory System. Front Cardiovasc Med 2021; 7:629933. [PMID: 33614744 PMCID: PMC7886785 DOI: 10.3389/fcvm.2020.629933] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 12/15/2020] [Indexed: 01/08/2023] Open
Abstract
Meta-analyses have indicated that individuals with type 1 or type 2 diabetes are at increased risk of suffering a severe form of COVID-19 and have a higher mortality rate than the non-diabetic population. Patients with diabetes have chronic, low-level systemic inflammation, which results in global cellular dysfunction underlying the wide variety of symptoms associated with the disease, including an increased risk of respiratory infection. While the increased severity of COVID-19 amongst patients with diabetes is not yet fully understood, the common features associated with both diseases are dysregulated immune and inflammatory responses. An additional key player in COVID-19 is the enzyme, angiotensin-converting enzyme 2 (ACE2), which is essential for adhesion and uptake of virus into cells prior to replication. Changes to the expression of ACE2 in diabetes have been documented, but they vary across different organs and the importance of such changes on COVID-19 severity are still under investigation. This review will examine and summarise existing data on how immune and inflammatory processes interplay with the pathogenesis of COVID-19, with a particular focus on the impacts that diabetes, endothelial dysfunction and the expression dynamics of ACE2 have on the disease severity.
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Affiliation(s)
- Jacob Roberts
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
| | - Antonia L. Pritchard
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
| | - Andrew T. Treweeke
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
| | - Adriano G. Rossi
- Centre for Inflammation Research, University of Edinburgh, Edinburgh, United Kingdom
| | - Nicole Brace
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
| | - Paul Cahill
- School of Biotechnology, Dublin City University, Dublin, Ireland
| | - Sandra M. MacRury
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
| | - Jun Wei
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
| | - Ian L. Megson
- Institute for Health Research and Innovation, University of the Highlands and Islands, Inverness, United Kingdom
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Pérez-Galarza J, Prócel C, Cañadas C, Aguirre D, Pibaque R, Bedón R, Sempértegui F, Drexhage H, Baldeón L. Immune Response to SARS-CoV-2 Infection in Obesity and T2D: Literature Review. Vaccines (Basel) 2021; 9:102. [PMID: 33572702 PMCID: PMC7911386 DOI: 10.3390/vaccines9020102] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 01/09/2021] [Accepted: 01/22/2021] [Indexed: 12/12/2022] Open
Abstract
In December 2019, a novel coronavirus known as SARS-CoV-2 was first detected in Wuhan, China, causing outbreaks of the coronavirus disease COVID-19 that has now spread globally. For this reason, The World Health Organization (WHO) declared COVID-19 a public health emergency in March 2020. People living with pre-existing conditions such as obesity, cardiovascular diseases, type 2 diabetes (T2D), and chronic kidney and lung diseases, are prone to develop severe forms of disease with fatal outcomes. Metabolic diseases such as obesity and T2D alter the balance of innate and adaptive responses. Both diseases share common features characterized by augmented adiposity associated with a chronic systemic low-grade inflammation, senescence, immunoglobulin glycation, and abnormalities in the number and function of adaptive immune cells. In obese and T2D patients infected by SARS-CoV-2, where immune cells are already hampered, this response appears to be stronger. In this review, we describe the abnormalities of the immune system, and summarize clinical findings of COVID-19 patients with pre-existing conditions such as obesity and T2D as this group is at greater risk of suffering severe and fatal clinical outcomes.
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Affiliation(s)
- Jorge Pérez-Galarza
- Research Institute of Biomedicine, Central University of Ecuador, Quito 170201, Ecuador; (J.P.-G.); (C.C.); (D.A.); (R.P.)
- Faculty of Medicine, Central University of Ecuador, Quito 170403, Ecuador; (R.B.); (F.S.)
| | | | - Cristina Cañadas
- Research Institute of Biomedicine, Central University of Ecuador, Quito 170201, Ecuador; (J.P.-G.); (C.C.); (D.A.); (R.P.)
| | - Diana Aguirre
- Research Institute of Biomedicine, Central University of Ecuador, Quito 170201, Ecuador; (J.P.-G.); (C.C.); (D.A.); (R.P.)
| | - Ronny Pibaque
- Research Institute of Biomedicine, Central University of Ecuador, Quito 170201, Ecuador; (J.P.-G.); (C.C.); (D.A.); (R.P.)
| | - Ricardo Bedón
- Faculty of Medicine, Central University of Ecuador, Quito 170403, Ecuador; (R.B.); (F.S.)
- Hospital General Docente de Calderón, Quito 170201, Ecuador
| | - Fernando Sempértegui
- Faculty of Medicine, Central University of Ecuador, Quito 170403, Ecuador; (R.B.); (F.S.)
| | - Hemmo Drexhage
- Immunology Department, Erasmus Medical Center, 3015 Rotterdam, The Netherlands;
| | - Lucy Baldeón
- Research Institute of Biomedicine, Central University of Ecuador, Quito 170201, Ecuador; (J.P.-G.); (C.C.); (D.A.); (R.P.)
- Faculty of Medicine, Central University of Ecuador, Quito 170403, Ecuador; (R.B.); (F.S.)
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Bajaj V, Gadi N, Spihlman AP, Wu SC, Choi CH, Moulton VR. Aging, Immunity, and COVID-19: How Age Influences the Host Immune Response to Coronavirus Infections? Front Physiol 2021; 11:571416. [PMID: 33510644 PMCID: PMC7835928 DOI: 10.3389/fphys.2020.571416] [Citation(s) in RCA: 243] [Impact Index Per Article: 81.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 12/16/2020] [Indexed: 01/08/2023] Open
Abstract
The novel coronavirus severe acute respiratory syndrome coronavirus 2 causing the Coronavirus disease (COVID-19) pandemic has ravaged the world with over 72 million total cases and over 1.6 million deaths worldwide as of early December 2020. An overwhelming preponderance of cases and deaths is observed within the elderly population, and especially in those with pre-existing conditions and comorbidities. Aging causes numerous biological changes in the immune system, which are linked to age-related illnesses and susceptibility to infectious diseases. Age-related changes influence the host immune response and therefore not only weaken the ability to fight respiratory infections but also to mount effective responses to vaccines. Immunosenescence and inflamm-aging are considered key features of the aging immune system wherein accumulation of senescent immune cells contribute to its decline and simultaneously increased inflammatory phenotypes cause immune dysfunction. Age-related quantitative and qualitative changes in the immune system affect cells and soluble mediators of both the innate and adaptive immune responses within lymphoid and non-lymphoid peripheral tissues. These changes determine not only the susceptibility to infections, but also disease progression and clinical outcomes thereafter. Furthermore, the response to therapeutics and the immune response to vaccines are influenced by age-related changes within the immune system. Therefore, better understanding of the pathophysiology of aging and the immune response will not only help understand age-related diseases but also guide targeted management strategies for deadly infectious diseases like COVID-19.
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Affiliation(s)
- Varnica Bajaj
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
- School of Medicine, Boston University, Boston, MA, United States
| | - Nirupa Gadi
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
- School of Medicine, Boston University, Boston, MA, United States
| | - Allison P. Spihlman
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
- School of Medicine, Boston University, Boston, MA, United States
| | - Samantha C. Wu
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
- School of Medicine, Boston University, Boston, MA, United States
| | - Christopher H. Choi
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
- School of Medicine, Boston University, Boston, MA, United States
| | - Vaishali R. Moulton
- Division of Rheumatology and Clinical Immunology, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
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Shao S, Yang Q, Pan R, Yu X, Chen Y. Interaction of Severe Acute Respiratory Syndrome Coronavirus 2 and Diabetes. Front Endocrinol (Lausanne) 2021; 12:731974. [PMID: 34690930 PMCID: PMC8527093 DOI: 10.3389/fendo.2021.731974] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 09/17/2021] [Indexed: 01/08/2023] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is causing a worldwide epidemic. It spreads very fast and hits people of all ages, especially patients with underlying diseases such as diabetes. In this review, we focus on the influences of diabetes on the outcome of SARS-CoV-2 infection and the involved mechanisms including lung dysfunction, immune disorder, abnormal expression of angiotensin-converting enzyme 2 (ACE2), overactivation of mechanistic target of rapamycin (mTOR) signaling pathway, and increased furin level. On the other hand, SARS-CoV-2 may trigger the development of diabetes. It causes the damage of pancreatic β cells, which is probably mediated by ACE2 protein in the islets. Furthermore, SARS-CoV-2 may aggravate insulin resistance through attacking other metabolic organs. Of note, certain anti-diabetic drugs (OADs), such as peroxisome proliferator-activated receptor γ (PPARγ) activator and glucagon-like peptide 1 receptor (GLP-1R) agonist, have been shown to upregulate ACE2 in animal models, which may increase the risk of SARS-CoV-2 infection. However, Metformin, as a first-line medicine for the treatment of type 2 diabetes mellitus (T2DM), may be a potential drug benefiting diabetic patients with SARS-CoV-2 infection, probably via a suppression of mTOR signaling together with its anti-inflammatory and anti-fibrosis function in lung. Remarkably, another kind of OADs, dipeptidyl Peptidase 4 (DPP4) inhibitor, may also exert beneficial effects in this respect, probably via a prevention of SARS-CoV-2 binding to cells. Thus, it is of significant to identify appropriate OADs for the treatment of diabetes in the context of SARS-CoV-2 infections.
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Affiliation(s)
- Shiying Shao
- Division of Endocrinology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Qin Yang
- Division of Pathology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Ruping Pan
- Department of Nuclear Medicine, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - Xuefeng Yu
- Division of Endocrinology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
| | - Yong Chen
- Division of Endocrinology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
- Branch of National Clinical Research Center for Metabolic Diseases, Hubei, China
- *Correspondence: Yong Chen,
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