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Knoll M, Honce R, Meliopoulos V, Segredo-Otero EA, Johnson KEE, Schultz-Cherry S, Ghedin E, Gresham D. Host obesity impacts genetic variation in influenza A viral populations. J Virol 2024; 98:e0177823. [PMID: 38785423 DOI: 10.1128/jvi.01778-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 04/21/2024] [Indexed: 05/25/2024] Open
Abstract
Obesity is well established as a risk factor for many noncommunicable diseases; however, its consequences for infectious disease are poorly understood. Here, we investigated the impact of host obesity on influenza A virus (IAV) genetic variation using a diet-induced obesity ferret model and the A/Hong Kong/1073/1999 (H9N2) strain. Using a co-caging study design, we investigated the maintenance, generation, and transmission of intrahost IAV genetic variation by sequencing viral genomic RNA obtained from nasal wash samples over multiple days of infection. We found evidence for an enhanced role of positive selection acting on de novo mutations in obese hosts that led to nonsynonymous changes that rose to high frequency. In addition, we identified numerous cases of mutations throughout the genome that were specific to obese hosts and that were preserved during transmission between hosts. Despite detection of obese-specific variants, the overall viral genetic diversity did not differ significantly between obese and lean hosts. This is likely due to the high supply rate of de novo variation and common evolutionary adaptations to the ferret host regardless of obesity status, which we show are mediated by variation in the hemagglutinin and polymerase genes (PB2 and PB1). We also identified defective viral genomes (DVGs) that were found uniquely in either obese or lean hosts, but the overall DVG diversity and dynamics did not differ between the two groups. Our study suggests that obesity may result in a unique selective environment impacting intrahost IAV evolution, highlighting the need for additional genetic and functional studies to confirm these effects.IMPORTANCEObesity is a chronic health condition characterized by excess adiposity leading to a systemic increase in inflammation and dysregulation of metabolic hormones and immune cell populations. Influenza A virus (IAV) is a highly infectious pathogen responsible for seasonal and pandemic influenza. Host risk factors, including compromised immunity and pre-existing health conditions, can contribute to increased infection susceptibility and disease severity. During viral replication in a host, the negative-sense single-stranded RNA genome of IAV accumulates genetic diversity that may have important consequences for viral evolution and transmission. Our study provides the first insight into the consequences of host obesity on viral genetic diversity and adaptation, suggesting that host factors associated with obesity alter the selective environment experienced by a viral population, thereby impacting the spectrum of genetic variation.
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Affiliation(s)
- Marissa Knoll
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, New York, USA
| | - Rebekah Honce
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Victoria Meliopoulos
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | | | - Katherine E E Johnson
- Systems Genomics Section, Laboratory of Parasitic Diseases, NIAID, NIH, Bethesda, Maryland, USA
| | - Stacey Schultz-Cherry
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, Tennessee, USA
| | - Elodie Ghedin
- Systems Genomics Section, Laboratory of Parasitic Diseases, NIAID, NIH, Bethesda, Maryland, USA
| | - David Gresham
- Department of Biology, Center for Genomics and Systems Biology, New York University, New York, New York, USA
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2
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Sankararaman S, Venegas C, Seth S, Palchaudhuri S. "Feed a Cold, Starve a Fever?" A Review of Nutritional Strategies in the Setting of Bacterial Versus Viral Infections. Curr Nutr Rep 2024; 13:314-322. [PMID: 38587572 DOI: 10.1007/s13668-024-00536-w] [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] [Accepted: 03/27/2024] [Indexed: 04/09/2024]
Abstract
PURPOSE OF REVIEW Some data, mostly originally derived from animal studies, suggest that low glucose intake is protective in bacterial sepsis but detrimental in overwhelming viral infections. This has been interpreted into a broad belief that different forms of sepsis may potentially require different nutritional management strategies. There are a few mechanistic differences between the host interactions with virus and bacteria which can explain why there may be opposing responses to macronutrient and micronutrient during the infected state. Here, we aim to review relevant evidence on the mechanisms and pathophysiology of nutritional management strategies in various infectious syndromes and summarize their clinical implications. RECENT FINDINGS Newer literature - in the context of the SARS-CoV-19 pandemic - offers some insight to viral infections. There is still limited clinically applicable data during infection that clearly delineate the role of nutrition during an active viral vs bacterial infections. Based on contrasting findings in different models of viruses and bacteria, the macronutrient and micronutrient needs may depend more on specific infectious organisms that may not be generalizable as bacterial versus viral. Overall, the metabolic effects of sepsis are context dependent, and various host-specific (e.g., age, baseline nutritional status, immune status, comorbidities) and illness variables (phase, duration, and severity of illness) play a significant role in determining the outcome besides pathogen-specific (virus or bacterial or fungi and combined infections) factors. Microbe therapy (probiotics and prebiotics) seems to have therapeutic potential in both viral and bacterial infected states, and this seems like a promising area for further practical research.
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Affiliation(s)
- Senthilkumar Sankararaman
- Division of Pediatric Gastroenterology, UH Rainbow Babies & Children's Hospital, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Carla Venegas
- Department Critical Care Medicine and Nutrition Support Team, Mayo Clinic, Jacksonville, FL, USA
| | - Sonia Seth
- Upstate Medical University, Syracuse, NY, USA
| | - Sonali Palchaudhuri
- Division of Gastroenterology, Massachusetts General Hospital, Boston, MA, USA.
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Badurdeen DS, Li Z, Lee JH, Ma T, Bhagwate AV, Latanich R, Dogiparthi A, Ordog T, Kovbasnjuk O, Kumbhari V, Foulke-Abel J. Intestinal epigenomic alterations are associated with a dysregulated nutrient absorption phenotype in obesity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.06.591758. [PMID: 38766131 PMCID: PMC11100618 DOI: 10.1101/2024.05.06.591758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Obesity is an epidemic with myriad health effects, but little is understood regarding individual obese phenotypes and how they may respond to therapy. Epigenetic changes associated with obesity have been detected in blood, liver, pancreas, and adipose tissues. Previous work found that dietary glucose hyperabsorption occurs in some obese subjects, but detailed transcriptional or epigenomic features of the intestine associated with this phenotype are unknown. This study evaluated differentially expressed genes and relative chromatin accessibility in intestinal organoids established from donors classified as lean, obese, or obese hyperabsorptive by body mass index and glucose transport assays. Transcriptomic analysis indicated that obese hyperabsorptive subjects have significantly upregulated dietary nutrient absorption proteins and downregulated type I interferon targets. Chromatin accessibility and transcription factor footprinting suggested that enhanced binding of HNF4G promotes the obese hyperabsorption phenotype. Quantitative PCR assessment in a larger subject cohort suggested that intestinal epithelial expression of CUBN, GIP, and SLC2A5 have high correlation with hyperabsorption. The obese hyperabsorption phenotype is characterized by transcriptional changes that support increased nutrient uptake and may be driven by differentially accessible chromatin. Recognizing unique intestinal phenotypes in obesity provides new perspective in considering therapeutic targets and options to manage the disease.
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4
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Marin AG, Filipescu A, Petca A. The Role of Obesity in the Etiology and Carcinogenesis of Endometrial Cancer. Cureus 2024; 16:e59219. [PMID: 38807790 PMCID: PMC11132319 DOI: 10.7759/cureus.59219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2024] [Indexed: 05/30/2024] Open
Abstract
Endometrial cancer, the most common gynecological malignancy, presents a complex public health challenge. While its incidence rises alongside the obesity epidemic, a well-established risk factor for endometrial cancer development, the impact of obesity on survival after diagnosis remains unclear. This review aims to explore the complex relationship between obesity and endometrial cancer's development and survival rates, examining evidence from both epidemiological and clinical studies. It also aims to explore the proposed biological mechanisms by which excess adipose tissue promotes carcinogenesis and contributes to endometrial cancer progression and its negative effects on treatment outcomes. Furthermore, we analyzed the impact of body mass index, inflammation, hormonal imbalances, and their potential effects on endometrial cancer survival rates.
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Affiliation(s)
| | - Alexandru Filipescu
- Obstetrics and Gynaecology, Elias Emergency University Hospital, Bucharest, ROU
| | - Aida Petca
- Obstetrics and Gynaecology, Carol Davila University of Medicine and Pharmacy, Bucharest, ROU
- Obstetrics and Gynaecology, Elias Emergency University Hospital, Bucharest, ROU
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5
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Merz MP, Seal SV, Grova N, Mériaux S, Guebels P, Kanli G, Mommaerts E, Nicot N, Kaoma T, Keunen O, Nazarov PV, Turner JD. Early-life influenza A (H1N1) infection independently programs brain connectivity, HPA AXIS and tissue-specific gene expression profiles. Sci Rep 2024; 14:5898. [PMID: 38467724 PMCID: PMC10928197 DOI: 10.1038/s41598-024-56601-5] [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: 09/22/2023] [Accepted: 03/08/2024] [Indexed: 03/13/2024] Open
Abstract
Early-life adversity covers a range of physical, social and environmental stressors. Acute viral infections in early life are a major source of such adversity and have been associated with a broad spectrum of later-life effects outside the immune system or "off-target". These include an altered hypothalamus-pituitary-adrenal (HPA) axis and metabolic reactions. Here, we used a murine post-natal day 14 (PND 14) Influenza A (H1N1) infection model and applied a semi-holistic approach including phenotypic measurements, gene expression arrays and diffusion neuroimaging techniques to investigate HPA axis dysregulation, energy metabolism and brain connectivity. By PND 56 the H1N1 infection had been resolved, and there was no residual gene expression signature of immune cell infiltration into the liver, adrenal gland or brain tissues examined nor of immune-related signalling. A resolved early-life H1N1 infection had sex-specific effects. We observed retarded growth of males and altered pre-stress (baseline) blood glucose and corticosterone levels at PND42 after the infection was resolved. Cerebral MRI scans identified reduced connectivity in the cortex, midbrain and cerebellum that were accompanied by tissue-specific gene expression signatures. Gene set enrichment analysis confirmed that these were tissue-specific changes with few common pathways. Early-life infection independently affected each of the systems and this was independent of HPA axis or immune perturbations.
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Affiliation(s)
- Myriam P Merz
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, 2 Avenue de Université, L-4365, Esch-Sur-Alzette, Luxembourg
- Central Biobank Charité, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Snehaa V Seal
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
- Faculty of Science, Technology and Medicine, University of Luxembourg, 2 Avenue de Université, L-4365, Esch-Sur-Alzette, Luxembourg
| | - Nathalie Grova
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
- Inserm U1256, NGERE, Nutrition-Génétique Et Exposition Aux Risques Environnementaux, Université de Lorraine, 54000, Nancy, France
| | - Sophie Mériaux
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
| | - Pauline Guebels
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg
| | - Georgia Kanli
- In Vivo Imaging Platform, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
- Translational Radiomics, Department of Cancer Research, Luxembourg Institute of Health, 1526, Luxembourg, Luxembourg
| | - Elise Mommaerts
- LuxGen Genome Center, Laboratoire National de Santé, Luxembourg Institute of Health, 3555, Dudelange, Luxembourg
| | - Nathalie Nicot
- LuxGen Genome Center, Laboratoire National de Santé, Luxembourg Institute of Health, 3555, Dudelange, Luxembourg
| | - Tony Kaoma
- Bioinformatics Platform, Data Integration and Analysis Unit, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
| | - Olivier Keunen
- In Vivo Imaging Platform, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
- Translational Radiomics, Department of Cancer Research, Luxembourg Institute of Health, 1526, Luxembourg, Luxembourg
| | - Petr V Nazarov
- Bioinformatics Platform, Data Integration and Analysis Unit, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
- Multiomics Data Science Research Group, Department of Cancer Research, Luxembourg Institute of Health, 1445, Strassen, Luxembourg
| | - Jonathan D Turner
- Immune Endocrine and Epigenetics Research Group, Department of Infection and Immunity, Luxembourg Institute of Health (LIH), 29 Rue Henri Koch, 4354, Esch-Sur-Alzette, Luxembourg.
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Rai P, Webb EM, Kang L, Weger-Lucarelli J. Insulin reduces the transmission potential of chikungunya virus and activates the toll pathway in Aedes aegypti mosquitoes. INSECT MOLECULAR BIOLOGY 2023; 32:648-657. [PMID: 37334906 DOI: 10.1111/imb.12863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
Chikungunya virus (CHIKV) is an alphavirus that has re-emerged globally over the last two decades and has the potential to become endemic in the United States due to the presence of competent mosquito vectors, Aedes aegypti and Aedes albopictus. CHIK disease is characterised by fever, rash, and joint pain, and causes chronic debilitating joint pain and swelling in >50% of infected individuals. Given the disease severity caused by CHIKV and the global presence of vectors to facilitate its spread, strategies to reduce viral transmission are desperately needed; however, the human biological factors driving CHIKV transmission are poorly understood. Towards that end, we have previously shown that mosquitoes fed on alphavirus-infected obese mice have reduced infection and transmission rates compared to those fed on infected lean mice despite similar viremia in lean and obese mice. One of the many host factors that increase in obese hosts is insulin, which was previously shown to impact the infection of mosquitoes by several flaviviruses. However, insulin's impact on alphavirus infection of live mosquitoes is unknown and whether insulin influences mosquito-borne virus transmission has not been tested. To test this, we exposed A. aegypti mosquitoes to bloodmeals with CHIKV in the presence or absence of physiologically relevant levels of insulin and found that insulin significantly lowered both infection and transmission rates. RNA sequencing analysis on mosquito midguts isolated at 1-day-post-infectious-bloodmeal (dpbm) showed enrichment in genes in the Toll immune pathway in the presence of insulin, which was validated by reverse transcription-quantitative polymerase chain reaction (RT-qPCR). We then sought to determine if the Toll pathway plays a role in CHIKV infection of Ae. aegypti mosquitoes; therefore, we knocked down Myd88, a critical immune adaptor molecule for the Toll pathway, in live mosquitoes, and found increased CHIKV infection compared to the mock knockdown control group. Overall, these data demonstrate that insulin reduces CHIKV transmission by Ae. aegypti and activates the Toll pathway in mosquitoes, suggesting that conditions resulting in higher serum insulin concentrations may reduce alphavirus transmission. Finally, these studies suggest that strategies to activate insulin or Toll signalling in mosquitoes may be an effective control strategy against medically relevant alphaviruses.
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Affiliation(s)
- Pallavi Rai
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD College of Veterinary Medicine, Blacksburg, Virginia, USA
- Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Tech, Blacksburg, Virginia, USA
| | - Emily M Webb
- Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Tech, Blacksburg, Virginia, USA
- Department of Entomology, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, Virginia, USA
| | - Lin Kang
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD College of Veterinary Medicine, Blacksburg, Virginia, USA
- Biomedical Research, Edward Via College of Osteopathic Medicine, Monroe, Louisiana, USA
| | - James Weger-Lucarelli
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD College of Veterinary Medicine, Blacksburg, Virginia, USA
- Center for Emerging, Zoonotic, and Arthropod-borne Pathogens, Virginia Tech, Blacksburg, Virginia, USA
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7
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Ruck L, Wiegand S, Kühnen P. Relevance and consequence of chronic inflammation for obesity development. Mol Cell Pediatr 2023; 10:16. [PMID: 37957462 PMCID: PMC10643747 DOI: 10.1186/s40348-023-00170-6] [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: 07/09/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Increasing prevalence of morbid obesity accompanied by comorbidities like type 2 diabetes mellitus (T2DM) led to a demand for improving therapeutic strategies and pharmacological intervention options. Apart from genetics, inflammation processes have been hypothesized to be of importance for the development of obesity and related aspects like insulin resistance. MAIN TEXT Within this review, we provide an overview of the intricate interplay between chronic inflammation of the adipose tissue and the hypothalamus and the development of obesity. Further understanding of this relationship might improve the understanding of the underlying mechanism and may be of relevance for the establishment of new treatment strategies.
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Affiliation(s)
- Lisa Ruck
- Klinik Für Pädiatrische Endokrinologie und Diabetologie, Charité Universitätsmedizin, Berlin, Germany.
- Berlin Institute of Health at Charité-Universitätsmedizin Berlin, BIH Biomedical Innovation Academy, BIH Charité Junior Clinician Scientist Program, Charitéplatz 1, 10117, Berlin, Germany.
| | - Susanna Wiegand
- Abteilung Interdisziplinär, Sozial-Pädiatrisches Zentrum, Charité Universitätsmedizin, Berlin, Germany
| | - Peter Kühnen
- Klinik Für Pädiatrische Endokrinologie und Diabetologie, Charité Universitätsmedizin, Berlin, Germany
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8
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Hornung F, Schulz L, Köse-Vogel N, Häder A, Grießhammer J, Wittschieber D, Autsch A, Ehrhardt C, Mall G, Löffler B, Deinhardt-Emmer S. Thoracic adipose tissue contributes to severe virus infection of the lung. Int J Obes (Lond) 2023; 47:1088-1099. [PMID: 37587162 PMCID: PMC10599992 DOI: 10.1038/s41366-023-01362-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 07/27/2023] [Accepted: 08/07/2023] [Indexed: 08/18/2023]
Abstract
OBJECTIVE Obesity is an independent risk factor for severe influenza virus and COVID-19 infections. There might be an interplay between adipose tissue and respiratory pathogens, although the mechanism is unknown. Proinflammatory factors secreted by the adipose tissue are often discussed to serve as indirect contributor to virus infection. However, the direct potential of adipose tissue to serve as a viral niche has not yet been investigated. METHODS Two murine obesity models (DIO and ob/ob) were infected with influenza A virus (IAV) and monitored for 3 weeks. p.i. Lung and adipose tissue were harvested, and the viral load was analysed. Direct replication of IAV in vitro was investigated in human derived primary adipocytes and macrophages. The indirect impact of the secretory products of adipocytes during infection was analysed in a co-culture system with lung fibroblasts. Moreover, lung and adipose tissue was harvested from deceased patients infected with SARS-CoV-2 omicron variant. Additionally, replication of SARS-CoV-2 alpha, delta, and omicron variants was investigated in vitro in adipocytes and macrophages. RESULTS Both murine obesity models presented high IAV titers compared to non-obese mice. Interestingly, adipose tissue adjacent to the lungs was a focal point for influenza virus replication in mice. We further detected IAV replication and antiviral response in human adipocytes. Co-cultivation of adipocytes and lung fibroblasts led to increased IL-8 concentration during infection. Though we observed SARS-CoV-2 in the thoracic adipose tissue of COVID-19 patients, no active replication was found in adipocytes in vitro. However, SARS-CoV-2 was detected in the macrophages and this finding was associated with increased inflammation. CONCLUSIONS Our study revealed that thoracic adipose tissue contributes to respiratory virus infection. Besides indirect induction of proinflammatory factors during infection, adipocytes and macrophages within the tissue can directly support viral replication.
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Affiliation(s)
- Franziska Hornung
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany.
| | - Luise Schulz
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Nilay Köse-Vogel
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Antje Häder
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Jana Grießhammer
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Daniel Wittschieber
- Institute of Forensic Medicine, Jena University Hospital, Am Klinikum 1, Jena, Germany
- Institute of Forensic Medicine, University Hospital Bonn, University of Bonn, Stiftsplatz 12, 53111, Bonn, Germany
| | - Angelina Autsch
- Institute of Forensic Medicine, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Christina Ehrhardt
- Section of Experimental Virology, Institute of Medical Microbiology, Center for Molecular Biomedicine (CMB), Jena University Hospital, Hans-Knoell-Straße 2, Jena, Germany
| | - Gita Mall
- Institute of Forensic Medicine, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Bettina Löffler
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany
| | - Stefanie Deinhardt-Emmer
- Institute of Medical Microbiology, Jena University Hospital, Am Klinikum 1, Jena, Germany.
- Leibniz Institute of Photonic Technology-Member of the Research Alliance "Leibniz Health Technologies", Albert-Einstein-Straße 9, Jena, Germany.
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9
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Almond M, Farne HA, Jackson MM, Jha A, Katsoulis O, Pitts O, Tunstall T, Regis E, Dunning J, Byrne AJ, Mallia P, Kon OM, Saunders KA, Simpson KD, Snelgrove RJ, Openshaw PJM, Edwards MR, Barclay WS, Heaney LM, Johnston SL, Singanayagam A. Obesity dysregulates the pulmonary antiviral immune response. Nat Commun 2023; 14:6607. [PMID: 37857661 PMCID: PMC10587167 DOI: 10.1038/s41467-023-42432-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 10/11/2023] [Indexed: 10/21/2023] Open
Abstract
Obesity is a well-recognized risk factor for severe influenza infections but the mechanisms underlying susceptibility are poorly understood. Here, we identify that obese individuals have deficient pulmonary antiviral immune responses in bronchoalveolar lavage cells but not in bronchial epithelial cells or peripheral blood dendritic cells. We show that the obese human airway metabolome is perturbed with associated increases in the airway concentrations of the adipokine leptin which correlated negatively with the magnitude of ex vivo antiviral responses. Exogenous pulmonary leptin administration in mice directly impaired antiviral type I interferon responses in vivo and ex vivo in cultured airway macrophages. Obese individuals hospitalised with influenza showed dysregulated upper airway immune responses. These studies provide insight into mechanisms driving propensity to severe influenza infections in obesity and raise the potential for development of leptin manipulation or interferon administration as novel strategies for conferring protection from severe infections in obese higher risk individuals.
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Affiliation(s)
- Mark Almond
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Hugo A Farne
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Millie M Jackson
- Centre for Bacterial Resistance Biology. Section of Molecular Microbiology. Department of Infectious Disease, Imperial College London, London, UK
| | - Akhilesh Jha
- Department of Medicine, University of Cambridge, Cambridge, UK
| | - Orestis Katsoulis
- Centre for Bacterial Resistance Biology. Section of Molecular Microbiology. Department of Infectious Disease, Imperial College London, London, UK
| | - Oliver Pitts
- Centre for Bacterial Resistance Biology. Section of Molecular Microbiology. Department of Infectious Disease, Imperial College London, London, UK
| | | | - Eteri Regis
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Jake Dunning
- Pandemic Sciences Institute, University of Oxford, Oxford, UK
| | - Adam J Byrne
- National Heart and Lung Institute, Imperial College London, London, UK
- School of Medicine and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, 4, Ireland
| | - Patrick Mallia
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Onn Min Kon
- National Heart and Lung Institute, Imperial College London, London, UK
| | | | | | | | | | - Michael R Edwards
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Wendy S Barclay
- Section of Virology, Department of Infectious Disease, Imperial College London, London, UK
| | - Liam M Heaney
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
| | | | - Aran Singanayagam
- Centre for Bacterial Resistance Biology. Section of Molecular Microbiology. Department of Infectious Disease, Imperial College London, London, UK.
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10
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Kasmani MY, Topchyan P, Brown AK, Brown RJ, Wu X, Chen Y, Khatun A, Alson D, Wu Y, Burns R, Lin CW, Kudek MR, Sun J, Cui W. A spatial sequencing atlas of age-induced changes in the lung during influenza infection. Nat Commun 2023; 14:6597. [PMID: 37852965 PMCID: PMC10584893 DOI: 10.1038/s41467-023-42021-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 09/26/2023] [Indexed: 10/20/2023] Open
Abstract
Influenza virus infection causes increased morbidity and mortality in the elderly. Aging impairs the immune response to influenza, both intrinsically and because of altered interactions with endothelial and pulmonary epithelial cells. To characterize these changes, we performed single-cell RNA sequencing (scRNA-seq), spatial transcriptomics, and bulk RNA sequencing (bulk RNA-seq) on lung tissue from young and aged female mice at days 0, 3, and 9 post-influenza infection. Our analyses identified dozens of key genes differentially expressed in kinetic, age-dependent, and cell type-specific manners. Aged immune cells exhibited altered inflammatory, memory, and chemotactic profiles. Aged endothelial cells demonstrated characteristics of reduced vascular wound healing and a prothrombotic state. Spatial transcriptomics identified novel profibrotic and antifibrotic markers expressed by epithelial and non-epithelial cells, highlighting the complex networks that promote fibrosis in aged lungs. Bulk RNA-seq generated a timeline of global transcriptional activity, showing increased expression of genes involved in inflammation and coagulation in aged lungs. Our work provides an atlas of high-throughput sequencing methodologies that can be used to investigate age-related changes in the response to influenza virus, identify novel cell-cell interactions for further study, and ultimately uncover potential therapeutic targets to improve health outcomes in the elderly following influenza infection.
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Affiliation(s)
- Moujtaba Y Kasmani
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Paytsar Topchyan
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Ashley K Brown
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Ryan J Brown
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Xiaopeng Wu
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Yao Chen
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Achia Khatun
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Donia Alson
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Yue Wu
- Carter Immunology Center, University of Virginia, Charlottesville, VA, 22908, USA
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, 22908, USA
| | - Robert Burns
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
| | - Chien-Wei Lin
- Department of Biostatistics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Matthew R Kudek
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Jie Sun
- Carter Immunology Center, University of Virginia, Charlottesville, VA, 22908, USA
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA, 22908, USA
| | - Weiguo Cui
- Department of Microbiology and Immunology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
- Blood Research Institute, Versiti Wisconsin, Milwaukee, WI, 53226, USA.
- Department of Pathology, Northwestern University, Chicago, IL, 60611, USA.
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11
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Lepretre F, Gras D, Chanez P, Duez C. Natural killer cells in the lung: potential role in asthma and virus-induced exacerbation? Eur Respir Rev 2023; 32:230036. [PMID: 37437915 DOI: 10.1183/16000617.0036-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/23/2023] [Indexed: 07/14/2023] Open
Abstract
Asthma is a chronic inflammatory airway disorder whose pathophysiological and immunological mechanisms are not completely understood. Asthma exacerbations are mostly driven by respiratory viral infections and characterised by worsening of symptoms. Despite current therapies, asthma exacerbations can still be life-threatening. Natural killer (NK) cells are innate lymphoid cells well known for their antiviral activity and are present in the lung as circulating and resident cells. However, their functions in asthma and its exacerbations are still unclear. In this review, we will address NK cell activation and functions, which are particularly relevant for asthma and virus-induced asthma exacerbations. Then, the role of NK cells in the lungs at homeostasis in healthy individuals will be described, as well as their functions during pulmonary viral infections, with an emphasis on those associated with asthma exacerbations. Finally, we will discuss the involvement of NK cells in asthma and virus-induced exacerbations and examine the effect of asthma treatments on NK cells.
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Affiliation(s)
- Florian Lepretre
- Aix-Marseille Université, INSERM, INRAE, C2VN, Marseille, France
| | - Delphine Gras
- Aix-Marseille Université, INSERM, INRAE, C2VN, Marseille, France
| | - Pascal Chanez
- Aix-Marseille Université, INSERM, INRAE, C2VN, Marseille, France
- APHM, Hôpital Nord, Clinique des Bronches, de l'allergie et du sommeil, Marseille, France
| | - Catherine Duez
- Aix-Marseille Université, INSERM, INRAE, C2VN, Marseille, France
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12
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Chandrasekaran R, Morris CR, Butzirus IM, Mark ZF, Kumar A, Souza De Lima D, Daphtary N, Aliyeva M, Poynter ME, Anathy V, Dixon AE. Obesity exacerbates influenza-induced respiratory disease via the arachidonic acid-p38 MAPK pathway. Front Pharmacol 2023; 14:1248873. [PMID: 37680710 PMCID: PMC10482034 DOI: 10.3389/fphar.2023.1248873] [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: 06/28/2023] [Accepted: 08/08/2023] [Indexed: 09/09/2023] Open
Abstract
Obesity is a risk factor for severe influenza, and asthma exacerbations caused by respiratory viral infections. We investigated mechanisms that increase the severity of airway disease related to influenza in obesity using cells derived from obese and lean individuals, and in vitro and in vivo models. Primary human nasal epithelial cells (pHNECs) derived from obese compared with lean individuals developed increased inflammation and injury in response to influenza A virus (IAV). Obese mice infected with influenza developed increased airway inflammation, lung injury and elastance, but had a decreased interferon response, compared with lean mice. Lung arachidonic acid (AA) levels increased in obese mice infected with IAV; arachidonic acid increased inflammatory cytokines and injury markers in response to IAV in human bronchial epithelial (HBE) cells. Obesity in mice, and AA in HBE cells, increased activation of p38 MAPK signaling following IAV infection; inhibiting this pathway attenuated inflammation, injury and tissue elastance responses, and improved survival. In summary, obesity increases disease severity in response to influenza infection through activation of the p38 MAPK pathway in response to altered arachidonic acid signaling.
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Affiliation(s)
- Ravishankar Chandrasekaran
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Carolyn R. Morris
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Isabella M. Butzirus
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Zoe F. Mark
- Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Amit Kumar
- Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Dhemerson Souza De Lima
- Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Nirav Daphtary
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Minara Aliyeva
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Matthew E. Poynter
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Vikas Anathy
- Pathology and Laboratory Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
| | - Anne E. Dixon
- Department of Medicine, Larner College of Medicine, University of Vermont, Burlington, VT, United States
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13
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de Lima MHF, Machado CC, Nascimento DC, Silva CMS, Toller-Kawahisa JE, Rodrigues TS, Veras FP, Pontelli MC, Castro IA, Zamboni DS, Filho JCA, Cunha TM, Arruda E, da Cunha LD, Oliveira RDR, Cunha FQ, Louzada-Junior P. The TIGIT + T regulatory cells subset associates with nosocomial infection and fatal outcome in COVID-19 patients under mechanical ventilation. Sci Rep 2023; 13:13599. [PMID: 37604833 PMCID: PMC10442317 DOI: 10.1038/s41598-023-39924-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 08/02/2023] [Indexed: 08/23/2023] Open
Abstract
The TIGIT+FOXP3+Treg subset (TIGIT+Tregs) exerts robust suppressive activity on cellular immunity and predisposes septic individuals to opportunistic infection. We hypothesized that TIGIT+Tregs could play an important role in intensifying the COVID-19 severity and hampering the defense against nosocomial infections during hospitalization. Herein we aimed to verify the association between the levels of the TIGIT+Tregs with the mechanical ventilation requirement, fatal outcome, and bacteremia during hospitalization. TIGIT+Tregs were immunophenotyped by flow cytometry from the peripheral blood of 72 unvaccinated hospitalized COVID-19 patients at admission from May 29th to August 6th, 2020. The patients were stratified during hospitalization according to their mechanical ventilation requirement and fatal outcome. COVID-19 resulted in a high prevalence of the TIGIT+Tregs at admission, which progressively increased in patients with mechanical ventilation needs and fatal outcomes. The prevalence of TIGIT+Tregs positively correlated with poor pulmonary function and higher plasma levels of LDH, HMGB1, FGL2, and TNF. The non-survivors presented higher plasma levels of IL-33, HMGB1, FGL2, IL-10, IL-6, and 5.54 times more bacteremia than survivors. Conclusions: The expansion of the TIGIT+Tregs in COVID-19 patients was associated with inflammation, lung dysfunction, bacteremia, and fatal outcome.
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Affiliation(s)
- Mikhael Haruo Fernandes de Lima
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Caio Cavalcante Machado
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Daniele Carvalho Nascimento
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Camila Meirelles S Silva
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Juliana Escher Toller-Kawahisa
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Tamara Silva Rodrigues
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Flavio Protassio Veras
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Marjorie Cornejo Pontelli
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Italo A Castro
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Dario Simões Zamboni
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - José-Carlos A Filho
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Thiago M Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Eurico Arruda
- Virology Research Center, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Larissa Dias da Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- Department of Cell and Molecular Biology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Renê D R Oliveira
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil
| | - Fernando Q Cunha
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
- Departament of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
| | - Paulo Louzada-Junior
- Divisions of Clinical Immunology, Emergency, Infectious Diseases and Intensive Care Unit, Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, São Paulo, 14049-900, Brazil.
- Center of Research in Inflammatory Diseases, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
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14
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Knoll M, Honce R, Meliopoulos V, Schultz-Cherry S, Ghedin E, Gresham D. Host obesity impacts genetic variation in influenza A viral populations. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.12.548715. [PMID: 37503024 PMCID: PMC10369978 DOI: 10.1101/2023.07.12.548715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Obesity is a chronic health condition characterized by excess adiposity leading to a systemic increase in inflammation and dysregulation of metabolic hormones and immune cell populations. Obesity is well established as a risk factor for many noncommunicable diseases; however, its consequences for infectious disease are poorly understood. Influenza A virus (IAV) is a highly infectious pathogen responsible for seasonal and pandemic influenza. Host risk factors, including compromised immunity and pre-existing health conditions, can contribute to increased infection susceptibility and disease severity. During viral replication in a host, the negative sense single stranded RNA genome of IAV accumulates genetic diversity that may have important consequences for viral evolution and transmission. Here, we investigated the impact of host obesity on IAV genetic variation using a diet induced obesity ferret model. We infected obese and lean male ferrets with the A/Hong Kong/1073/1999 (H9N2) IAV strain. Using a co-caging study design, we investigated the maintenance, generation, and transmission of intrahost IAV genetic variation by sequencing viral genomic RNA obtained from nasal wash samples over multiple days of infection. We found evidence for an enhanced role of positive selection acting on de novo mutations in obese hosts that led to nonsynonymous changes that rose to high frequency. In addition, we identified numerous cases of recurrent low-frequency mutations throughout the genome that were specific to obese hosts. Despite these obese-specific variants, overall viral genetic diversity did not differ significantly between obese and lean hosts. This is likely due to the high supply rate of de novo variation and common evolutionary adaptations to the ferret host regardless of obesity status, which we show are mediated by variation in the hemagglutinin (HA) and polymerase genes (PB2 and PB1). As with single nucleotide variants, we identified a class of defective viral genomes (DVGs) that were found uniquely in either obese or lean hosts, but overall DVG diversity and dynamics did not differ between the two groups. Our study provides the first insight into the consequences of host obesity on viral genetic diversity and adaptation, suggesting that host factors associated with obesity alter the selective environment experienced by a viral population, thereby impacting the spectrum of genetic variation.
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Affiliation(s)
- Marissa Knoll
- Center for Genomics and Systems Biology, Department of Biology, New York University
| | - Rebekah Honce
- Department of Infectious Diseases, St. Jude Children’s Research Hospital
| | | | | | - Elodie Ghedin
- Systems Genomics Section, Laboratory of Parasitic Diseases, NIAID, NIH, Bethesda, MD 20894, USA
| | - David Gresham
- Center for Genomics and Systems Biology, Department of Biology, New York University
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15
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Gaudet M, Kaufmann E, Jalaleddine N, Mogas A, Hachim M, Senok A, Divangahi M, Hamid Q, Al Heialy S. Lung Epithelial Cells from Obese Patients Have Impaired Control of SARS-CoV-2 Infection. Int J Mol Sci 2023; 24:ijms24076729. [PMID: 37047702 PMCID: PMC10095048 DOI: 10.3390/ijms24076729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/27/2023] [Accepted: 03/05/2023] [Indexed: 04/08/2023] Open
Abstract
Obesity is known to increase the complications of the COVID-19 coronavirus disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, the exact mechanisms of SARS-CoV-2 infection in obese patients have not been clearly elucidated. This study aims to better understand the effect of obesity on the course of SARS-CoV-2 infection and identify candidate molecular pathways involved in the progression of the disease, using an in vitro live infection model and RNA sequencing. Results from this study revealed the enhancement of viral load and replication in bronchial epithelial cells (NHBE) from obese subjects at 24 h of infection (MOI = 0.5) as compared to non-obese subjects. Transcriptomic profiling via RNA-Seq highlighted the enrichment of lipid metabolism-related pathways along with LPIN2, an inflammasome regulator, as a unique differentially expressed gene (DEG) in infected bronchial epithelial cells from obese subjects. Such findings correlated with altered cytokine and angiotensin-converting enzyme-2 (ACE2) expression during infection of bronchial cells. These findings provide a novel insight on the molecular interplay between obesity and SARS-CoV-2 infection. In conclusion, this study demonstrates the increased SARS-CoV-2 infection of bronchial epithelial cells from obese subjects and highlights the impaired immunity which may explain the increased severity among obese COVID-19 patients.
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Affiliation(s)
- Mellissa Gaudet
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, Montreal, QC H4A 3J1, Canada
| | - Eva Kaufmann
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, Montreal, QC H4A 3J1, Canada
- Department of Biomedical and Molecular Sciences, Queen’s University, Kingston, ON K7L 3N6, Canada
| | - Nour Jalaleddine
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai P.O. Box 505055, United Arab Emirates
| | - Andrea Mogas
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, Montreal, QC H4A 3J1, Canada
| | - Mahmood Hachim
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai P.O. Box 505055, United Arab Emirates
| | - Abiola Senok
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai P.O. Box 505055, United Arab Emirates
| | - Maziar Divangahi
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, Montreal, QC H4A 3J1, Canada
| | - Qutayba Hamid
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, Montreal, QC H4A 3J1, Canada
- Sharjah Institute for Medical Research, University of Sharjah, Sharjah P.O. Box 27272, United Arab Emirates
| | - Saba Al Heialy
- Meakins-Christie Laboratories, Research Institute of the McGill University Healthy Center, Montreal, QC H4A 3J1, Canada
- College of Medicine, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai P.O. Box 505055, United Arab Emirates
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16
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Guo SA, Bowyer GS, Ferdinand JR, Maes M, Tuong ZK, Gillman E, Liao M, Lindeboom RGH, Yoshida M, Worlock K, Gopee H, Stephenson E, Gao CA, Lyons PA, Smith KGC, Haniffa M, Meyer KB, Nikolić MZ, Zhang Z, Wunderink RG, Misharin AV, Dougan G, Navapurkar V, Teichmann SA, Conway Morris A, Clatworthy MR. Obesity Is Associated with Attenuated Tissue Immunity in COVID-19. Am J Respir Crit Care Med 2023; 207:566-576. [PMID: 36095143 PMCID: PMC10870921 DOI: 10.1164/rccm.202204-0751oc] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 09/12/2022] [Indexed: 02/03/2023] Open
Abstract
Rationale: Obesity affects 40% of U.S. adults, is associated with a proinflammatory state, and presents a significant risk factor for the development of severe coronavirus disease (COVID-19). To date, there is limited information on how obesity might affect immune cell responses in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. Objectives: To determine the impact of obesity on respiratory tract immunity in COVID-19 across the human lifespan. Methods: We analyzed single-cell transcriptomes from BAL in three ventilated adult cohorts with (n = 24) or without (n = 9) COVID-19 from nasal immune cells in children with (n = 14) or without (n = 19) COVID-19, and from peripheral blood mononuclear cells in an independent adult COVID-19 cohort (n = 42), comparing obese and nonobese subjects. Measurements and Main Results: Surprisingly, we found that obese adult subjects had attenuated lung immune or inflammatory responses in SARS-CoV-2 infection, with decreased expression of IFN-α, IFN-γ, and TNF-α (tumor necrosis factor α) response gene signatures in almost all lung epithelial and immune cell subsets, and lower expression of IFNG and TNF in specific lung immune cells. Peripheral blood immune cells in an independent adult cohort showed a similar but less marked reduction in type-I IFN and IFNγ response genes, as well as decreased serum IFNα, in obese patients with SARS-CoV-2. Nasal immune cells from obese children with COVID-19 also showed reduced enrichment of IFN-α and IFN-γ response genes. Conclusions: These findings show blunted tissue immune responses in obese patients with COVID-19, with implications for treatment stratification, supporting the specific application of inhaled recombinant type-I IFNs in this vulnerable subset.
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Affiliation(s)
- Shuang A. Guo
- Molecular Immunity Unit
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - Georgina S. Bowyer
- Molecular Immunity Unit
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
| | - John R. Ferdinand
- Molecular Immunity Unit
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
| | - Mailis Maes
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
| | - Zewen K. Tuong
- Molecular Immunity Unit
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - Eleanor Gillman
- Molecular Immunity Unit
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
| | - Mingfeng Liao
- Institute for Hepatology, National Clinical Research Center for Infectious Disease, Shenzhen Third People’s Hospital, Shenzhen, China
| | | | - Masahiro Yoshida
- UCL Respiratory, Division of Medicine, University College London, London, United Kingdom
| | - Kaylee Worlock
- UCL Respiratory, Division of Medicine, University College London, London, United Kingdom
| | - Hudaa Gopee
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Emily Stephenson
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Catherine A. Gao
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Paul A. Lyons
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
- NIHR Cambridge Biomedical Research Centre, Cambridge, United Kingdom; and
| | - Kenneth G. C. Smith
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
- NIHR Cambridge Biomedical Research Centre, Cambridge, United Kingdom; and
| | - Muzlifah Haniffa
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, United Kingdom
| | - Kerstin B. Meyer
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
| | - Marko Z. Nikolić
- UCL Respiratory, Division of Medicine, University College London, London, United Kingdom
| | - Zheng Zhang
- Institute for Hepatology, National Clinical Research Center for Infectious Disease, Shenzhen Third People’s Hospital, Shenzhen, China
| | - Richard G. Wunderink
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Alexander V. Misharin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Gordon Dougan
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
- NIHR Cambridge Biomedical Research Centre, Cambridge, United Kingdom; and
| | - Vilas Navapurkar
- John V. Farman Intensive Care Unit, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | | | - Andrew Conway Morris
- Division of Anaesthesia, Department of Medicine
- Division of Immunology, Department of Pathology, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, United Kingdom
- John V. Farman Intensive Care Unit, Addenbrooke’s Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, United Kingdom
| | - Menna R. Clatworthy
- Molecular Immunity Unit
- Cambridge Institute for Therapeutic Immunology and Infectious Disease
- Department of Medicine, Cambridge Biomedical Campus
- Cellular Genetics, Wellcome Sanger Institute, Hinxton, United Kingdom
- NIHR Cambridge Biomedical Research Centre, Cambridge, United Kingdom; and
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17
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Vick LV, Collins CP, Khuat LT, Wang Z, Dunai C, Aguilar EG, Stoffel K, Yendamuri S, Smith R, Mukherjee S, Barbi J, Canter RJ, Monjazeb AM, Murphy WJ. Aging augments obesity-induced thymic involution and peripheral T cell exhaustion altering the "obesity paradox". Front Immunol 2023; 13:1012016. [PMID: 36776393 PMCID: PMC9910174 DOI: 10.3389/fimmu.2022.1012016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 12/07/2022] [Indexed: 01/28/2023] Open
Abstract
Introduction The incidence of obesity, a condition characterized by systemic chronic inflammation, has reached pandemic proportions and is a poor prognostic factor in many pathologic states. However, its role on immune parameters has been diverse and at times contradictory. We have previously demonstrated that obesity can result in what has been called the "obesity paradox" which results in increased T cell exhaustion, but also greater efficacy of immune checkpoint blockade in cancer treatment. Methods The role of obesity, particularly in the context of aging, has not been robustly explored using preclinical models. We therefore evaluated how age impacts the immune environment on T cell development and function using diet-induced obese (DIO) mice. Results We observed that DIO mice initially displayed greater thymopoiesis but then developed greater thymic involution over time compared to their lean counterparts. Both aging and obesity resulted in increased T cell memory conversion combined with increased expression of T cell exhaustion markers and Treg expansion. This increased T cell immunosuppression with age then resulted in a loss of anti-tumor efficacy by immune checkpoint inhibitors (ICIs) in older DIO mice compared to the younger DIO counterparts. Discussion These results suggest that both aging and obesity contribute to T cell dysfunction resulting in increased thymic involution. This combined with increased T cell exhaustion and immunosuppressive parameters affects immunotherapy efficacy reducing the advantage of obesity in cancer immunotherapy responses.
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Affiliation(s)
- Logan V. Vick
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Craig P. Collins
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Lam T. Khuat
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Ziming Wang
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Cordelia Dunai
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Ethan G. Aguilar
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Kevin Stoffel
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Sai Yendamuri
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Randall Smith
- Department of Immunology Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Sarbajit Mukherjee
- Department of Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Joseph Barbi
- Department of Thoracic Surgery, Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
- Department of Immunology Roswell Park Comprehensive Cancer Center, Buffalo, NY, United States
| | - Robert J. Canter
- Division of Surgical Oncology, Department of Surgery, University of California Davis Comprehensive Cancer Center, University of California Davis School of Medicine, Sacramento, CA, United States
| | - Arta M. Monjazeb
- Department of Radiation Oncology, University of California Davis Comprehensive Cancer Center, University of California School of Medicine, Sacramento, CA, United States
| | - William J. Murphy
- Department of Dermatology, University of California Davis School of Medicine, Sacramento, CA, United States
- Department of Internal Medicine, Division of Hematology and Oncology, University of California Davis School of Medicine, Sacramento, CA, United States
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18
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Geerling E, Hameed M, Weger-Lucarelli J, Pinto AK. Metabolic syndrome and aberrant immune responses to viral infection and vaccination: Insights from small animal models. Front Immunol 2022; 13:1015563. [PMID: 36532060 PMCID: PMC9747772 DOI: 10.3389/fimmu.2022.1015563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 11/08/2022] [Indexed: 12/05/2022] Open
Abstract
This review outlines the propensity for metabolic syndrome (MetS) to induce elevated disease severity, higher mortality rates post-infection, and poor vaccination outcomes for viral pathogens. MetS is a cluster of conditions including high blood glucose, an increase in circulating low-density lipoproteins and triglycerides, abdominal obesity, and elevated blood pressure which often overlap in their occurrence. MetS diagnoses are on the rise, as reported cases have increased by greater than 35% since 1988, resulting in one-third of United States adults currently diagnosed as MetS patients. In the aftermath of the 2009 H1N1 pandemic, a link between MetS and disease severity was established. Since then, numerous studies have been conducted to illuminate the impact of MetS on enhancing virally induced morbidity and dysregulation of the host immune response. These correlative studies have emphasized the need for elucidating the mechanisms by which these alterations occur, and animal studies conducted as early as the 1940s have linked the conditions associated with MetS with enhanced viral disease severity and poor vaccine outcomes. In this review, we provide an overview of the importance of considering overall metabolic health in terms of cholesterolemia, glycemia, triglyceridemia, insulin and other metabolic molecules, along with blood pressure levels and obesity when studying the impact of metabolism-related malignancies on immune function. We highlight the novel insights that small animal models have provided for MetS-associated immune dysfunction following viral infection. Such animal models of aberrant metabolism have paved the way for our current understanding of MetS and its impact on viral disease severity, dysregulated immune responses to viral pathogens, poor vaccination outcomes, and contributions to the emergence of viral variants.
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Affiliation(s)
- Elizabeth Geerling
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO, United States
| | - Muddassar Hameed
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States,Center for Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - James Weger-Lucarelli
- Department of Biomedical Science and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States,Center for Zoonotic and Arthropod-borne Pathogens, Virginia Polytechnic Institute and State University, Blacksburg, VA, United States
| | - Amelia K. Pinto
- Department of Molecular Microbiology and Immunology, Saint Louis University School of Medicine, St. Louis, MO, United States,*Correspondence: Amelia K. Pinto,
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19
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Wang Y, Hu C. Leptin and Asthma: What Are the Interactive Correlations? Biomolecules 2022; 12:biom12121780. [PMID: 36551211 PMCID: PMC9775505 DOI: 10.3390/biom12121780] [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: 10/25/2022] [Revised: 11/25/2022] [Accepted: 11/28/2022] [Indexed: 12/02/2022] Open
Abstract
Leptin is an adipokine directly correlated with the proinflammatory obese-associated phenotype. Leptin has been demonstrated to inhibit adipogenesis, promote fat demarcation, promote a chronic inflammatory state, increase insulin sensitivity, and promote angiogenesis. Leptin, a regulator of the immune response, is implicated in the pathology of asthma. Studies involved in the key cell reaction and animal models of asthma have provided vital insights into the proinflammatory role of leptin in asthma. Many studies described the immune cell and related cellular pathways activated by leptin, which are beneficial in asthma development and increasing exacerbations. Subsequent studies relating to animal models support the role of leptin in increasing inflammatory cell infiltration, airway hyperresponsiveness, and inflammatory responses. However, the conclusive effects of leptin in asthma are not well elaborated. In the present study, we explored the general functions and the clinical cohort study supporting the association between leptin and asthma. The main objective of our review is to address the knowns and unknowns of leptin on asthma. In this perspective, the arguments about the different faces of leptin in asthma are provided to picture the potential directions, thus yielding a better understanding of asthma development.
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Affiliation(s)
- Yang Wang
- Department of Respiratory Medicine (Department of Respiratory and Critical Care Medicine), Xiangya Hospital, Central South University, Changsha 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Chengping Hu
- Department of Respiratory Medicine (Department of Respiratory and Critical Care Medicine), Xiangya Hospital, Central South University, Changsha 410008, China
- Correspondence:
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20
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Hameed M, Geerling E, Pinto AK, Miraj I, Weger-Lucarelli J. Immune response to arbovirus infection in obesity. Front Immunol 2022; 13:968582. [PMID: 36466818 PMCID: PMC9716109 DOI: 10.3389/fimmu.2022.968582] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 11/04/2022] [Indexed: 12/26/2023] Open
Abstract
Obesity is a global health problem that affects 650 million people worldwide and leads to diverse changes in host immunity. Individuals with obesity experience an increase in the size and the number of adipocytes, which function as an endocrine organ and release various adipocytokines such as leptin and adiponectin that exert wide ranging effects on other cells. In individuals with obesity, macrophages account for up to 40% of adipose tissue (AT) cells, three times more than in adipose tissue (10%) of healthy weight individuals and secrete several cytokines and chemokines such as interleukin (IL)-1β, chemokine C-C ligand (CCL)-2, IL-6, CCL5, and tumor necrosis factor (TNF)-α, leading to the development of inflammation. Overall, obesity-derived cytokines strongly affect immune responses and make patients with obesity more prone to severe symptoms than patients with a healthy weight. Several epidemiological studies reported a strong association between obesity and severe arthropod-borne virus (arbovirus) infections such as dengue virus (DENV), chikungunya virus (CHIKV), West Nile virus (WNV), and Sindbis virus (SINV). Recently, experimental investigations found that DENV, WNV, CHIKV and Mayaro virus (MAYV) infections cause worsened disease outcomes in infected diet induced obese (DIO) mice groups compared to infected healthy-weight animals. The mechanisms leading to higher susceptibility to severe infections in individuals with obesity remain unknown, though a better understanding of the causes will help scientists and clinicians develop host directed therapies to treat severe disease. In this review article, we summarize the effects of obesity on the host immune response in the context of arboviral infections. We have outlined that obesity makes the host more susceptible to infectious agents, likely by disrupting the functions of innate and adaptive immune cells. We have also discussed the immune response of DIO mouse models against some important arboviruses such as CHIKV, MAYV, DENV, and WNV. We can speculate that obesity-induced disruption of innate and adaptive immune cell function in arboviral infections ultimately affects the course of arboviral disease. Therefore, further studies are needed to explore the cellular and molecular aspects of immunity that are compromised in obesity during arboviral infections or vaccination, which will be helpful in developing specific therapeutic/prophylactic interventions to prevent immunopathology and disease progression in individuals with obesity.
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Affiliation(s)
- Muddassar Hameed
- Department of Biomedical Sciences and Pathobiology, VA-MD Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
| | - Elizabeth Geerling
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Amelia K. Pinto
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Iqra Miraj
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, China
| | - James Weger-Lucarelli
- Department of Biomedical Sciences and Pathobiology, VA-MD Regional College of Veterinary Medicine, Virginia Tech, Blacksburg, VA, United States
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21
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Body fat percentage is independently and inversely associated with serum antibody responses to SARS-CoV-2 mRNA vaccines. Sci Rep 2022; 12:19224. [PMID: 36357408 PMCID: PMC9648460 DOI: 10.1038/s41598-022-21884-z] [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: 07/11/2022] [Accepted: 10/05/2022] [Indexed: 11/11/2022] Open
Abstract
Vaccination is widely considered the most effective preventative strategy to protect against severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection. An individual's exercise habits, and physical fitness have been shown to impact the immune response following vaccination using traditional vaccine platforms, but their effects are not well characterized following administration of newer vaccination technology (mRNA vaccines). We investigated these effects on the magnitude of antibody responses following SARS-CoV-2 mRNA vaccination while accounting for known covariates (age, sex, time since vaccination, and the type of vaccine administered). Adults of varying fitness levels (18-65 years; N = 50) who had received either the Moderna or Pfizer SARS-CoV-2 mRNA vaccine between 2 weeks and 6 months prior, completed health history and physical activity questionnaires, had their blood drawn, body composition, cardiorespiratory fitness, and strength assessed. Multiple linear regressions assessed the effect of percent body fat, hand grip strength, cardiorespiratory fitness, and physical activity levels on the magnitude of receptor binding domain protein (RBD) and spike protein subunit 1 (S1) and 2 (S2) while accounting for known covariates. Body fat percentage was inversely associated with the magnitude of S1 (p = 0.006, β = - 366.56), RBD (p = 0.003, β = - 249.30), and S2 (p = 0.106, β = - 190.08) antibodies present in the serum following SARS-CoV-2 mRNA vaccination. Given the increasing number of infections, variants, and the known waning effects of vaccination, future mRNA vaccinations such as boosters are encouraged to sustain immunity; reducing excess body fat may improve the efficacy of these vaccinations.
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22
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Lee KS, Russ BP, Wong TY, Horspool AM, Winters MT, Barbier M, Bevere JR, Martinez I, Damron FH, Cyphert HA. Obesity and metabolic dysfunction drive sex-associated differential disease profiles in hACE2-mice challenged with SARS-CoV-2. iScience 2022; 25:105038. [PMID: 36068847 PMCID: PMC9436780 DOI: 10.1016/j.isci.2022.105038] [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: 04/26/2022] [Revised: 06/25/2022] [Accepted: 08/25/2022] [Indexed: 12/05/2022] Open
Abstract
Severe outcomes from SARS-CoV-2 infection are highly associated with preexisting comorbid conditions like hypertension, diabetes, and obesity. We utilized the diet-induced obesity (DIO) model of metabolic dysfunction in K18-hACE2 transgenic mice to model obesity as a COVID-19 comorbidity. Female DIO, but not male DIO mice challenged with SARS-CoV-2 were observed to have shortened time to morbidity compared to controls. Increased susceptibility to SARS-CoV-2 in female DIO was associated with increased viral RNA burden and interferon production compared to males. Transcriptomic analysis of the lungs from all mouse cohorts revealed sex- and DIO-associated differential gene expression profiles. Male DIO mice after challenge had decreased expression of antibody-related genes compared to controls, suggesting antibody producing cell localization in the lung. Collectively, this study establishes a preclinical comorbidity model of COVID-19 in mice where we observed sex- and diet-specific responses that begin explaining the effects of obesity and metabolic disease on COVID-19 pathology. Transcriptomic analysis of infected lungs revealed unique sex-dependent differences Obese female mice have high viral RNA burden and interferon production in the lung Male mice have altered antibody and T cell response gene profiles after viral challenge Metabolic dysfunction comorbidity can be studied in the hACE2 mouse model of COVID-19
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Affiliation(s)
- Katherine S. Lee
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Brynnan P. Russ
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Ting Y. Wong
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Alexander M. Horspool
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Michael T. Winters
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
| | - Mariette Barbier
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Justin R. Bevere
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Ivan Martinez
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- West Virginia University Cancer Institute, School of Medicine, Morgantown, WV, USA
| | - F. Heath Damron
- Department of Microbiology, Immunology, and Cell Biology, West Virginia University, Morgantown, WV, USA
- Vaccine Development Center at West Virginia University Health Sciences Center, Morgantown, WV, USA
| | - Holly A. Cyphert
- Department of Biological Sciences, Marshall University, Huntington, WV, USA
- Corresponding author
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23
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Guo W, Wu D, Li L, Ding S, Meydani SN. Obesity, rather than high fat diet, exacerbates the outcome of influenza virus infection in influenza-sensitized mice. Front Nutr 2022; 9:1018831. [PMID: 36337627 PMCID: PMC9631825 DOI: 10.3389/fnut.2022.1018831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 10/07/2022] [Indexed: 11/21/2022] Open
Abstract
Introduction Obesity is associated with impaired immune function and increased susceptibility to infection. High fat (HF) diet-induced obesity is a commonly used animal model. However, HF diet itself is known to affect immune function and infection. Thus, it is not discernable which one, HF diet or adiposity, is the major contributor to the observed impairment in immunity and susceptibility to infection in HF diet-induced obesity. We hypothesized that obesity is a major contributor to impaired immune function. Methods and results Weight-matched outbred female CD-1 mice (1-mo) were randomly assigned to either a HF (45%) or a low fat (LF, 10%) diet group. Ten week after feeding their respective diets, weight gain in the mice fed the HF diet varied greatly. Thus, based on the average body weight, mice in HF diet group were divided into two sub-groups: HF lean (HF-L) and HF obese (HF-O). After 25-week, mice were immunized with an influenza A/Puerto Rico/8/34 vaccine and boosted 3-week later. Five week after the booster, mice were infected with influenza A/Puerto Rico/8/34 virus, and body weight was recorded daily for 1 month. HF-O mice exhibited significant weight loss after influenza virus challenge compared to LF and HF-L mice while LF and HF-L mice largely maintained their weight to a similar extent. Conclusion Our findings suggest that obesity, rather than HF diet, per se, may impair the efficacy of influenza vaccination.
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Affiliation(s)
- Weimin Guo
- Nutritional Immunology Laboratory, JM USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States
- *Correspondence: Weimin Guo,
| | - Dayong Wu
- Nutritional Immunology Laboratory, JM USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States
| | - Lijun Li
- Nutritional Immunology Laboratory, JM USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States
| | - Samuel Ding
- Department of Medicine, Tufts University School of Medicine, Boston, MA, United States
| | - Simin Nikbin Meydani
- Nutritional Immunology Laboratory, JM USDA Human Nutrition Research Center on Aging, Tufts University, Boston, MA, United States
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24
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Greene E, MacIver NJ. Targeting T cell (oxidative) metabolism to improve immunity to viral infection in the context of obesity. Front Immunol 2022; 13:1025495. [PMID: 36275776 PMCID: PMC9583400 DOI: 10.3389/fimmu.2022.1025495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/23/2022] [Indexed: 01/08/2023] Open
Abstract
Disorders of systemic metabolism can influence immunity. Individuals with obesity are known to have increased inflammation, increased risk to select autoimmune diseases, impaired response to several infections, and impaired vaccine response. For example, over the last decade, it has become clear that individuals with obesity have increased risk of morbidity and mortality from influenza infection. Unsurprisingly, this finding is also observed in the current COVID-19 pandemic: individuals with obesity, particularly severe obesity, have increased risk of poor outcomes from SARS-CoV-2 infection, including increased rates of hospitalization, ICU admission, mechanical ventilation, and death. Several studies have now demonstrated a critical role for T cells in the context of obesity-associated immune dysfunction in response to viral infection, and one mechanism for this may be altered T cell metabolism. Indeed, recent studies have shown that activated T cells from obese mice have an altered metabolic profile characterized by increased glucose oxidation, both in vitro and in vivo following viral infection. For that reason, treatments that target abnormal immune cell metabolism in obesity may improve outcomes to viral infection. To that end, several recent studies have shown that use of the metabolic drug, metformin, can reverse abnormal T cell metabolism and restore T cell immunity, as well as survival, in response to viral infection. These findings will be discussed in detail here.
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Affiliation(s)
- Elizabeth Greene
- Department of Pediatrics, Duke University School of Medicine, Durham, NC, United States
| | - Nancie J. MacIver
- Department of Pediatrics, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- *Correspondence: Nancie J. MacIver,
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25
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Gao P, Ji M, Liu X, Chen X, Liu H, Li S, Jia B, Li C, Ren L, Zhao X, Wang Q, Bi Y, Tan X, Hou B, Zhou X, Tan W, Deng T, Wang J, Gao GF, Zhang F. Apolipoprotein E mediates cell resistance to influenza virus infection. SCIENCE ADVANCES 2022; 8:eabm6668. [PMID: 36129973 PMCID: PMC9491715 DOI: 10.1126/sciadv.abm6668] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Viruses exploit host cell machinery to support their replication. Defining the cellular proteins and processes required for a virus during infection is crucial to understanding the mechanisms of virally induced disease and designing host-directed therapeutics. Here, we perform a genome-wide CRISPR-Cas9-based screening in lung epithelial cells infected with the PR/8/NS1-GFP virus and use GFPhi cell as a unique screening marker to identify host factors that inhibit influenza A virus (IAV) infection. We discovered that APOE affects influenza virus infection both in vitro and in vivo. Cell deficiency in APOE conferred substantially increased susceptibility to IAV; mice deficient in APOE manifested more severe lung pathology, increased virus load, and decreased survival rate. Mechanistically, lack of cell-produced APOE results in impaired cell cholesterol homeostasis, enhancing influenza virus attachment. Thus, we identified a previously unrecognized role of APOE in restraining IAV infection.
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Affiliation(s)
- Ping Gao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Miao Ji
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinyuan Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaotong Chen
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Hongtao Liu
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shihua Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Baoqian Jia
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Chao Li
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lili Ren
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Xin Zhao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Qihui Wang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Yuhai Bi
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Xu Tan
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, China
| | - Baidong Hou
- Key Laboratory of Infection and Immunity, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
| | - Xuyu Zhou
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Wenjie Tan
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Tao Deng
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
| | - Jianwei Wang
- MOH Key Laboratory of Systems Biology of Pathogens and Christophe Mérieux Laboratory, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - George Fu Gao
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 101408, China
- National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Fuping Zhang
- CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences (CAS), Beijing 100101, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 101408, China
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26
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Hellmich C, Wojtowicz EE. You are what you eat: How to best fuel your immune system. Front Immunol 2022; 13:1003006. [PMID: 36211413 PMCID: PMC9533172 DOI: 10.3389/fimmu.2022.1003006] [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: 07/25/2022] [Accepted: 08/31/2022] [Indexed: 11/26/2022] Open
Abstract
Normal bone marrow (BM) homeostasis ensures consistent production of progenitor cells and mature blood cells. This requires a reliable supply of nutrients in particular free fatty acids, carbohydrates and protein. Furthermore, rapid changes can occur in response to stress such as infection which can alter the demand for each of these metabolites. In response to infection the haematopoietic stem cells (HSCs) must respond and expand rapidly to facilitate the process of emergency granulopoiesis required for the immediate immune response. This involves a shift from the use of glycolysis to oxidative phosphorylation for energy production and therefore an increased demand for metabolites. Thus, the right balance of each dietary component helps to maintain not only normal homeostasis but also the ability to quickly respond to systemic stress. In addition, some dietary components can drive chronic inflammatory changes in the absence of infection or immune stress, which in turn can impact on overall immune function. The optimal nutrition for the best immunological outcomes would therefore be a diet that supports the functions of immune cells allowing them to initiate effective responses against pathogens but also to resolve the response rapidly when necessary and to avoid any underlying chronic inflammation. In this review we discuss how these key dietary components can alter immune function, what is their impact on bone marrow metabolism and how changes in dietary intake of each of these can improve the outcomes of infections.
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Affiliation(s)
- Charlotte Hellmich
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, United Kingdom
- Department of Haematology, Norfolk and Norwich University Hospitals NHS Trust, Norwich, United Kingdom
- *Correspondence: Charlotte Hellmich, ; Edyta E. Wojtowicz,
| | - Edyta E. Wojtowicz
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, United Kingdom
- Earlham Institute, Norwich Research Park, Norwich, United Kingdom
- *Correspondence: Charlotte Hellmich, ; Edyta E. Wojtowicz,
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27
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Shaikh SR, MacIver NJ, Beck MA. Obesity Dysregulates the Immune Response to Influenza Infection and Vaccination Through Metabolic and Inflammatory Mechanisms. Annu Rev Nutr 2022; 42:67-89. [PMID: 35995048 PMCID: PMC10880552 DOI: 10.1146/annurev-nutr-062320-115937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The COVID-19 pandemic demonstrates that obesity alone, independent of comorbidities, is a significant risk factor for severe outcomes from infection. This susceptibility mirrors a similar pattern with influenza infection; that is, obesity is a unique risk factor for increased morbidity and mortality. Therefore, it is critical to understand how obesity contributes to a reduced ability to respond to respiratory viral infections. Herein, we discuss human and animal studies with influenza infection and vaccination that show obesity impairs immunity. We cover several key mechanisms for the dysfunction. These mechanisms include systemic and cellular level changes that dysregulate immune cell metabolism and function in addition to how obesity promotes deficiencies in metabolites that control the resolution of inflammation and infection. Finally, we discuss major gaps in knowledge, particularly as they pertain to diet and mechanisms, which will drive future efforts to improve outcomes in response to respiratory viral infections in an increasingly obese population.
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Affiliation(s)
- Saame Raza Shaikh
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; , ,
| | - Nancie J MacIver
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; , ,
- Department of Pediatrics, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Melinda A Beck
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; , ,
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Renu S, Deblais L, Patil V, Schrock J, Kathayat D, Srivastava V, Feliciano-Ruiz N, Han Y, Ramesh A, Lakshmanappa YS, Ghimire S, Dhakal S, Rajashekara G, Renukaradhya GJ. Gut Microbiota of Obese Children Influences Inflammatory Mucosal Immune Pathways in the Respiratory Tract to Influenza Virus Infection: Optimization of an Ideal Duration of Microbial Colonization in a Gnotobiotic Pig Model. Microbiol Spectr 2022; 10:e0267421. [PMID: 35579462 PMCID: PMC9241774 DOI: 10.1128/spectrum.02674-21] [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] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/15/2022] [Indexed: 11/20/2022] Open
Abstract
The impact of obesity on the human microbiota, immune maturation, and influenza virus infection has not been yet established in natural host animal models of influenza. In this study, gnotobiotic (Gn) pigs were colonized with human fecal microbiota (HFM) of obese (oHFM) or healthy lean (hHFM) children and infected at different periods (2-, 3-, and 5-weeks post-transplantation) using a zoonotic influenza virus strain. The infected oHFM pigs were characterized by lower levels of Firmicutes (Lactococcus, Lactobacillus, Turicibacter, and Streptococcus) and Actinobacteria (Bifidobacterium), which was associated with higher levels of Proteobacteria (Klebsiella), Bacteroidetes, and Verrucomicrobia (Akkermansia) compared with the infected hHFM group (P < 0.01). Furthermore, these genera significantly correlated with the expression of immune effectors, immune regulators, and inflammatory mediators, and displayed opposite trends between oHFM and hHFM groups (P < 0.01). The lymphoid and myeloid immune cell frequencies were differently modulated by the oHFM and hHFM colonization, especially apparent in the 5-weeks HFM colonized piglets. In addition, oHFM group had higher pro-inflammatory cytokines (IL-6, IL-12, TNF-α, and IFNγ) gene expression in the respiratory tract compared with the hHFM colonized pigs was detected. In conclusion, pigs colonized for longer duration, established oHFM increased the immune maturation favoring the activation of inflammatory mediators, however, the influenza virus load remained comparable with the hHFM group. Further, a longer duration of microbial colonization (5 weeks) may be required to reveal the impact of microbiome on the host immune maturation and susceptibility to influenza virus infection in the humanized Gn pig model. IMPORTANCE The diversity of gut microbiome of obese people differs markedly from that of lean healthy individuals which, in turn, influences the severity of inflammatory diseases because of differential maturation of immune system. The mouse model provides crucial insights into the mechanism(s) regulating the immune systems mediated by the gut microbiota but its applicability to humans is questionable because immune cells in mice are poorly activated in microbiota humanized mice. Several important strains of Bifidobacterium, Lactobacillus, and Clostridium fails to colonize the murine gut. Thus, understanding the role of certain important commensal gut bacterial species influences upon health and disease, a suitable large animal model like pig that supports the growth and colonization of most of the important human gut bacteria and possess comparable immunology and physiology to humans is beneficial to improve health.
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Affiliation(s)
- Sankar Renu
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Loic Deblais
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Veerupaxagouda Patil
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Jennifer Schrock
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Dipak Kathayat
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Vishal Srivastava
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Ninoshkaly Feliciano-Ruiz
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Yi Han
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Anikethana Ramesh
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Yashavanth S. Lakshmanappa
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Shristi Ghimire
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Santosh Dhakal
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Gireesh Rajashekara
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
| | - Gourapura J. Renukaradhya
- Center for Food Animal Health, Department of Animal Sciences, Ohio Agricultural Research and Development Center, Wooster, Ohio, USA
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Wang J, Zhu L, Liu L, Yan X, Xue L, Huang S, Zhang B, Xu T, Ji F, Li C, Ming F, Zhao Y, Cheng J, Chen K, Zhao XA, Sang D, Guan X, Chen X, Yan X, Zhang Z, Liu J, Huang R, Zhu C, Wu C. Clinical features and prognosis of COVID-19 patients with metabolic syndrome: A multicenter, retrospective study. MEDICINA CLINICA (ENGLISH ED.) 2022; 158:458-465. [PMID: 35702719 PMCID: PMC9181760 DOI: 10.1016/j.medcle.2021.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 05/21/2021] [Indexed: 01/08/2023]
Abstract
Background Few studies have investigated the impacts of metabolic syndrome (MS) on coronavirus disease 2019 (COVID-19). We described the clinical features and prognosis of confirmed COVID-19 patients with MS during hospitalization and after discharge. Methods Two hundred and thirty-three COVID-19 patients from the hospitals in 8 cities of Jiangsu, China were retrospectively included. Clinical characteristics of COVID-19 patients were described and risk factors of severe illness were analyzed by logistic regression analysis. Results Forty-five (19.3%) of 233 COVID-19 patients had MS. The median age of COVID-19 patients with MS was significantly higher than non-MS patients (53.0 years vs. 46.0 years, P = 0.004). There were no significant differences of clinical symptoms, abnormal chest CT images, and treatment drugs between two groups. More patients with MS had severe illness (33.3% vs. 6.4%, P < 0.001) and critical illness (4.4% vs. 0.5%, P = 0.037) than non-MS patients. The proportions of respiratory failure and acute respiratory distress syndrome in MS patients were also higher than non-MS patients during hospitalization. Multivariate analysis showed that concurrent MS (odds ratio [OR] 7.668, 95% confidence interval [CI] 3.062–19.201, P < 0.001) and lymphopenia (OR 3.315, 95% CI 1.306–8.411, P = 0.012) were independent risk factors of severe illness of COVID-19. At a median follow-up of 28 days after discharge, bilateral pneumonia was found in 95.2% of MS patients, while only 54.7% of non-MS patients presented bilateral pneumonia. Conclusions 19.3% of COVID-19 patients had MS in our study. COVID-19 patients with MS are more likely to develop severe complications and have worse prognosis. More attention should be paid to COVID-19 patients with MS.
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Key Words
- ARDS, acute respiratory distress syndrome
- BMI, body mass index
- COVID-19, coronavirus disease 2019
- Coronavirus disease 2019
- FBG, fasting blood glucose
- ICU, intensive care units
- IQR, interquartile range
- MS, metabolic syndrome
- Metabolic syndrome
- Prognosis
- SARS, severe acute respiratory syndrome
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- TC, total cholesterol
- TG, triglycerides
- WHO, world Health Organization
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Affiliation(s)
- Jian Wang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Li Zhu
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Longgen Liu
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Xuebing Yan
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Leyang Xue
- Department of Critical Medicine, Huai'an No. 4 People's Hospital, Huai'an, China
| | - Songping Huang
- Department of Infectious Diseases, Nantong Third People's Hospital, Nantong University, Nantong, China
| | - Biao Zhang
- Department of Quality Control Office, Huai'an No. 4 People's Hospital, Huai'an, China
| | - Tianmin Xu
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Fang Ji
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Chunyang Li
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Fang Ming
- Department of Infectious Diseases, Nantong Third People's Hospital, Nantong University, Nantong, China
| | - Yun Zhao
- Department of Infectious Diseases, The Third People's Hospital of Yangzhou, Yangzhou, China
| | - Juan Cheng
- Department of Infectious Diseases, Yancheng Second People's Hospital, Yancheng, China
| | - Kang Chen
- Department of Tuberculosis, The Third People's Hospital of Changzhou, Changzhou, China
| | - Xiang-An Zhao
- Department of Gastroenterology, Northern Jiangsu People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Dawen Sang
- Department of Infectious Diseases, Yancheng Second People's Hospital, Yancheng, China
| | - Xinying Guan
- Department of Neurology, The Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Xiaobing Chen
- Department of Emergency, The Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Xiaomin Yan
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Zhaoping Zhang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Jiacheng Liu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Rui Huang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Chuanwu Zhu
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Chao Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
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30
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Wang J, Zhu L, Liu L, Yan X, Xue L, Huang S, Zhang B, Xu T, Ji F, Li C, Ming F, Zhao Y, Cheng J, Chen K, Zhao XA, Sang D, Guan X, Chen X, Yan X, Zhang Z, Liu J, Huang R, Zhu C, Wu C. Clinical features and prognosis of COVID-19 patients with metabolic syndrome: A multicenter, retrospective study. Med Clin (Barc) 2022; 158:458-465. [PMID: 34243955 PMCID: PMC8213355 DOI: 10.1016/j.medcli.2021.05.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 05/17/2021] [Accepted: 05/21/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Few studies have investigated the impacts of metabolic syndrome (MS) on coronavirus disease 2019 (COVID-19). We described the clinical features and prognosis of confirmed COVID-19 patients with MS during hospitalization and after discharge. METHODS Two hundred and thirty-three COVID-19 patients from the hospitals in 8 cities of Jiangsu, China were retrospectively included. Clinical characteristics of COVID-19 patients were described and risk factors of severe illness were analyzed by logistic regression analysis. RESULTS Forty-five (19.3%) of 233 COVID-19 patients had MS. The median age of COVID-19 patients with MS was significantly higher than non-MS patients (53.0 years vs. 46.0 years, P=0.004). There were no significant differences of clinical symptoms, abnormal chest CT images, and treatment drugs between two groups. More patients with MS had severe illness (33.3% vs. 6.4%, P<0.001) and critical illness (4.4% vs. 0.5%, P=0.037) than non-MS patients. The proportions of respiratory failure and acute respiratory distress syndrome in MS patients were also higher than non-MS patients during hospitalization. Multivariate analysis showed that concurrent MS (odds ratio [OR] 7.668, 95% confidence interval [CI] 3.062-19.201, P<0.001) and lymphopenia (OR 3.315, 95% CI 1.306-8.411, P=0.012) were independent risk factors of severe illness of COVID-19. At a median follow-up of 28 days after discharge, bilateral pneumonia was found in 95.2% of MS patients, while only 54.7% of non-MS patients presented bilateral pneumonia. CONCLUSIONS 19.3% of COVID-19 patients had MS in our study. COVID-19 patients with MS are more likely to develop severe complications and have worse prognosis. More attention should be paid to COVID-19 patients with MS.
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Affiliation(s)
- Jian Wang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Li Zhu
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China
| | - Longgen Liu
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Xuebing Yan
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Leyang Xue
- Department of Critical Medicine, Huai'an No. 4 People's Hospital, Huai'an, China
| | - Songping Huang
- Department of Infectious Diseases, Nantong Third People's Hospital, Nantong University, Nantong, China
| | - Biao Zhang
- Department of Quality Control Office, Huai'an No. 4 People's Hospital, Huai'an, China
| | - Tianmin Xu
- Department of Infectious Diseases, The Third People's Hospital of Changzhou, Changzhou, China
| | - Fang Ji
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Chunyang Li
- Department of Infectious Diseases, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Fang Ming
- Department of Infectious Diseases, Nantong Third People's Hospital, Nantong University, Nantong, China
| | - Yun Zhao
- Department of Infectious Diseases, The Third People's Hospital of Yangzhou, Yangzhou, China
| | - Juan Cheng
- Department of Infectious Diseases, Yancheng Second People's Hospital, Yancheng, China
| | - Kang Chen
- Department of Tuberculosis, The Third People's Hospital of Changzhou, Changzhou, China
| | - Xiang-An Zhao
- Department of Gastroenterology, Northern Jiangsu People's Hospital, Clinical Medical College of Yangzhou University, Yangzhou, China
| | - Dawen Sang
- Department of Infectious Diseases, Yancheng Second People's Hospital, Yancheng, China
| | - Xinying Guan
- Department of Neurology, The Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Xiaobing Chen
- Department of Emergency, The Affiliated Hospital of Kangda College of Nanjing Medical University, The First People's Hospital of Lianyungang, Lianyungang, China
| | - Xiaomin Yan
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Zhaoping Zhang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China
| | - Jiacheng Liu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital Clinical College of Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China
| | - Rui Huang
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
| | - Chuanwu Zhu
- Department of Infectious Diseases, The Affiliated Infectious Diseases Hospital of Soochow University, Suzhou, China.
| | - Chao Wu
- Department of Infectious Diseases, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, China.
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Obesity and Leptin Resistance in the Regulation of the Type I Interferon Early Response and the Increased Risk for Severe COVID-19. Nutrients 2022; 14:nu14071388. [PMID: 35406000 PMCID: PMC9002648 DOI: 10.3390/nu14071388] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 03/23/2022] [Accepted: 03/23/2022] [Indexed: 02/06/2023] Open
Abstract
Obesity, and obesity-associated conditions such as hypertension, chronic kidney disease, type 2 diabetes, and cardiovascular disease, are important risk factors for severe Coronavirus disease-2019 (COVID-19). The common denominator is metaflammation, a portmanteau of metabolism and inflammation, which is characterized by chronically elevated levels of leptin and pro-inflammatory cytokines. These induce the “Suppressor Of Cytokine Signaling 1 and 3” (SOCS1/3), which deactivates the leptin receptor and also other SOCS1/3 sensitive cytokine receptors in immune cells, impairing the type I and III interferon early responses. By also upregulating SOCS1/3, Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV)-2 adds a significant boost to this. The ensuing consequence is a delayed but over-reactive immune response, characterized by high-grade inflammation (e.g., cytokine storm), endothelial damage, and hypercoagulation, thus leading to severe COVID-19. Superimposing an acute disturbance, such as a SARS-CoV-2 infection, on metaflammation severely tests resilience. In the long run, metaflammation causes the “typical western” conditions associated with metabolic syndrome. Severe COVID-19 and other serious infectious diseases can be added to the list of its short-term consequences. Therefore, preventive measures should include not only vaccination and the well-established actions intended to avoid infection, but also dietary and lifestyle interventions aimed at improving body composition and preventing or reversing metaflammation.
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Keilen J, Gar C, Rottenkolber M, Fueessl L, Joseph AT, Draenert R, Seissler J, Lechner A. No association of natural killer cell number and function in peripheral blood with overweight/obesity and metabolic syndrome in a cohort of young women. Physiol Rep 2022; 10:e15148. [PMID: 35179822 PMCID: PMC8855889 DOI: 10.14814/phy2.15148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 11/28/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023] Open
Abstract
AIM To reexamine the associations of NK cell number and function in the peripheral blood with overweight/obesity and the metabolic syndrome in a large, well-phenotyped human cohort. METHODS Cross-sectional analysis of 273 women in the PPSDiab Study; measurement of absolute and relative number of NK cells in peripheral blood, and of functional parameters CD69 positivity and cytotoxicity against K562 cells; group comparison of NK cell characteristics between lean, overweight, and obese participants, as well as metabolic syndrome scores of 0, 1, 2, and ≥3; Spearman correlation analyses to clinical parameters related to the metabolic syndrome. RESULTS We found no differences in NK cell number and function between lean, overweight, and obese women (relative NK cell number (median (Q1-Q3), [%]) 5.1(2.6-9.4) vs. 4.8 (2.9-8.4) vs. 3.8 (1.7-7.8), p = 0.187; absolute NK cell number [106 /L]: 86.9 (44.6-188.8) vs. 92.6 (52.5-154.6) vs. 85.9 (44-153.8), p = 0.632; CD69+ [%]: 27.2 (12.9-44.3) vs. 37.6 (13.2-52.8) vs. 33.6 (16.3-45), p = 0.136; cytotoxicity [%]: 11.0 (7.1-14.5) vs. 8.5 (6.4-13.2) vs. 11.3 (8.7-14.2), p = 0.094), as well as between different metabolic syndrome scores. Nonesterified fatty acids correlated with absolute and relative NK cell number and cytotoxicity (ρ [p-value]: 0.142 [0.021], 0.119 [0.049], and 0.131 [0.035], respectively). Relative NK cell number further correlated with high-density lipoprotein cholesterol (0.144 [0.018]) and cytotoxicity with 2 h glucose in oral glucose tolerance testing (0.132 [0.034]). CD69 positivity correlated with body fat (0.141 [0.021]), triglycerides (0.129 [0.033]), and plasma leptin (0.155 [0.010]). After correction for multiple testing, none of the associations remained significant. CONCLUSION In the present study, we observed no associations of NK cell number and function in the peripheral blood with overweight/obesity and the metabolic syndrome. Extreme phenotypes of obesity and the metabolic syndrome might have caused differing results in previous studies. Further analyses with a focus on compartments other than peripheral blood may help to clarify the relation between NK cells and metabolic diseases.
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Affiliation(s)
- Julia Keilen
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
| | - Christina Gar
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
| | - Marietta Rottenkolber
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
| | - Louise U. Fueessl
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
| | - Anna T. Joseph
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
| | - Rika Draenert
- Stabsstelle Antibiotic StewardshipLMU Klinikum MunichMunichGermany
| | - Jochen Seissler
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
| | - Andreas Lechner
- Diabetes Research GroupDepartment of Medicine IVUniversity HospitalLMU MunichMunichGermany
- Clinical Cooperation Group DiabetesLudwig‐Maximilians‐Universität München and Helmholtz Zentrum MünchenMunichGermany
- German Center for Diabetes Research (DZD)München‐NeuherbergGermany
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Yang Y, Wang L, Liu J, Fu S, Zhou L, Wang Y. Obesity or increased body mass index and the risk of severe outcomes in patients with COVID-19: A protocol for systematic review and meta-analysis. Medicine (Baltimore) 2022; 101:e28499. [PMID: 35029905 PMCID: PMC8735775 DOI: 10.1097/md.0000000000028499] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND To assess the effect of obesity or a high body mass index (BMI) on the risk of severe outcomes in patients with coronavirus disease 2019 (COVID-19). METHODS Studies on the relationship between BMI or obesity and COVID-19 since December 2019. The odds ratio (OR) and weighted mean difference (WMD) with their 95% confidence intervals (CIs) were used to assess the effect size. RESULTS BMI was significantly increased in COVID-19 patients with severe illness (WMD: 1.18; 95% CI: 0.42-1.93), who were admitted to an intensive care unit (ICU) (WMD: 1.46; 95% CI: 0.96-1.97), who required invasive mechanical ventilation (IMV) (WMD: 2.70, 95% CI: 1.05-4.35) and who died (WMD: 0.91, 95% CI: 0.02-1.80). In Western countries, obesity (BMI of ≥30 kg/m2) increased the risk of hospitalization (OR: 2.08; 95% CI: 1.22-3.54), admission to an ICU (OR: 1.54; 95% CI: 1.29-1.84), need for IMV (OR: 1.73, 95% CI: 1.38-2.17), and mortality (OR: 1.43; 95% CI: 1.17-1.74) of patients with COVID-19. In the Asian population, obesity (BMI of ≥28 kg/m2) increased the risk of severe illness (OR: 3.14; 95% CI: 1.83-5.38). Compared with patients with COVID-19 and a BMI of <25 kg/m2, those with a BMI of 25-30 kg/m2 and ≥30 kg/m2 had a higher risk of need for IMV (OR: 2.19, 95% CI: 1.30-3.69 and OR: 3.04; 95% CI: 1.76-5.28, respectively). The risk of ICU admission in patients with COVID-19 and a BMI of ≥30 kg/m2 was significantly higher than in those with a BMI of 25-30 kg/m2 (OR: 1.49; 95% CI: 1.00-2.21). CONCLUSION As BMI increased, the risks of hospitalization, ICU admission, and need for IMV increased, especially in COVID-19 patients with obesity. ETHICS AND DISSEMINATION This systematic review and meta-analysis does not require an ethics approval as it does not collect any primary data from patients.
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Affiliation(s)
- Yaxian Yang
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Liting Wang
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, P.R. China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Jingfang Liu
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, P.R. China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Songbo Fu
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, P.R. China
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Liyuan Zhou
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Yan Wang
- Department of Endocrinology, The First Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
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Mancuso P, Curtis JL, Weitzel AM, Griffin CA, Bouchard B, Freeman CM, Bridges D, Singer K. Diet-induced obesity in mice impairs host defense against Klebsiella pneumonia in vivo and glucose transport and bactericidal functions in neutrophils in vitro. Am J Physiol Lung Cell Mol Physiol 2022; 322:L116-L128. [PMID: 34850640 PMCID: PMC8794018 DOI: 10.1152/ajplung.00008.2021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 11/16/2021] [Accepted: 11/16/2021] [Indexed: 01/03/2023] Open
Abstract
Obesity impairs host defense against Klebsiella pneumoniae, but responsible mechanisms are incompletely understood. To determine the impact of diet-induced obesity on pulmonary host defense against K. pneumoniae, we fed 6-wk-old male C57BL/6j mice a normal diet (ND) or high-fat diet (HFD) (13% vs. 60% fat, respectively) for 16 wk. Mice were intratracheally infected with Klebsiella, assayed at 24 or 48 h for bacterial colony-forming units, lung cytokines, and leukocytes from alveolar spaces, lung parenchyma, and gonadal adipose tissue were assessed using flow cytometry. Neutrophils from uninfected mice were cultured with and without 2-deoxy-d-glucose (2-DG) and assessed for phagocytosis, killing, reactive oxygen intermediates (ROI), transport of 2-DG, and glucose transporter (GLUT1-4) transcripts, and protein expression of GLUT1 and GLUT3. HFD mice had higher lung and splenic bacterial burdens. In HFD mice, baseline lung homogenate concentrations of IL-1β, IL-6, IL-17, IFN-γ, CXCL2, and TNF-α were reduced relative to ND mice, but following infection were greater for IL-6, CCL2, CXCL2, and IL-1β (24 h only). Despite equivalent lung homogenate leukocytes, HFD mice had fewer intraalveolar neutrophils. HFD neutrophils exhibited decreased Klebsiella phagocytosis and killing and reduced ROI to heat-killed Klebsiella in vitro. 2-DG transport was lower in HFD neutrophils, with reduced GLUT1 and GLUT3 transcripts and protein (GLUT3 only). Blocking glycolysis with 2-DG impaired bacterial killing and ROI production in neutrophils from mice fed ND but not HFD. Diet-induced obesity impairs pulmonary Klebsiella clearance and augments blood dissemination by reducing neutrophil killing and ROI due to impaired glucose transport.
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Affiliation(s)
- Peter Mancuso
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan
- Graduate Program in Immunology, University of Michigan, Ann Arbor, Michigan
| | - Jeffrey L Curtis
- Graduate Program in Immunology, University of Michigan, Ann Arbor, Michigan
- Division of Pulmonary & Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
- Medical Service, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Anne M Weitzel
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Cameron A Griffin
- Division of Pediatric Endocrinology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
| | - Benjamin Bouchard
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Christine M Freeman
- Graduate Program in Immunology, University of Michigan, Ann Arbor, Michigan
- Division of Pulmonary & Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan
- Research Service, Veterans Affairs Ann Arbor Healthcare System, Ann Arbor, Michigan
| | - Dave Bridges
- Department of Nutritional Sciences, School of Public Health, University of Michigan, Ann Arbor, Michigan
| | - Kanakadurga Singer
- Graduate Program in Immunology, University of Michigan, Ann Arbor, Michigan
- Division of Pediatric Endocrinology, Department of Pediatrics, University of Michigan, Ann Arbor, Michigan
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35
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Green WD, Al-Shaer AE, Shi Q, Gowdy KM, MacIver NJ, Milner JJ, Beck MA, Shaikh SR. Metabolic and functional impairment of CD8 + T cells from the lungs of influenza-infected obese mice. J Leukoc Biol 2022; 111:147-159. [PMID: 33847405 PMCID: PMC8787296 DOI: 10.1002/jlb.4a0120-075rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/21/2021] [Accepted: 02/22/2021] [Indexed: 12/25/2022] Open
Abstract
Obesity is an independent risk factor for morbidity and mortality in response to influenza infection. However, the underlying mechanisms by which obesity impairs immunity are unclear. Herein, we investigated the effects of diet-induced obesity on pulmonary CD8+ T cell metabolism, cytokine production, and transcriptome as a potential mechanism of impairment during influenza virus infection in mice. Male C57BL/6J lean and obese mice were infected with sub-lethal mouse-adapted A/PR/8/34 influenza virus, generating a pulmonary anti-viral and inflammatory response. Extracellular metabolic flux analyses revealed pulmonary CD8+ T cells from obese mice, compared with lean controls, had suppressed oxidative and glycolytic metabolism at day 10 post-infection. Flow cytometry showed the impairment in pulmonary CD8+ T cell metabolism with obesity was independent of changes in glucose or fatty acid uptake, but concomitant with decreased CD8+ GrB+ IFNγ+ populations. Notably, the percent of pulmonary effector CD8+ GrB+ IFNγ+ T cells at day 10 post-infection correlated positively with total CD8+ basal extracellular acidification rate and basal oxygen consumption rate. Finally, next-generation RNA sequencing revealed complex and unique transcriptional regulation of sorted effector pulmonary CD8+ CD44+ T cells from obese mice compared to lean mice following influenza infection. Collectively, the data suggest diet-induced obesity increases influenza virus pathogenesis, in part, through CD8+ T cell-mediated metabolic reprogramming and impaired effector CD8+ T cell function.
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Affiliation(s)
- William D Green
- Department of Microbiology and Immunology, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Abrar E Al-Shaer
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Qing Shi
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Kymberly M Gowdy
- Division of Pulmonary, Critical Care and Sleep Medicine, The Ohio State University, Columbus, OH, 43210, USA
| | - Nancie J MacIver
- Department of Immunology, Department of Pediatrics, Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, North Carolina, USA
| | - J Justin Milner
- Department of Microbiology and Immunology, Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Melinda A Beck
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
| | - Saame Raza Shaikh
- Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, North Carolina, USA
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36
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Cho DH, Lee GY, An JH, Han SN. The Effects of 1,25(OH)2D3 treatment on Immune Responses and Intracellular Metabolic Pathways of Bone Marrow-Derived Dendritic Cells from Lean and Obese Mice. IUBMB Life 2021; 74:378-390. [PMID: 34962347 DOI: 10.1002/iub.2592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 12/15/2021] [Indexed: 11/11/2022]
Abstract
Vitamin D affects differentiation, maturation, and activation of dendritic cells (DCs). Obesity-related immune dysfunction is associated with metabolic changes in immune cells. Objectives of the study are to investigate the effects of vitamin D and obesity on immune responses and markers related to immunometabolism of bone marrow-derived dendritic cells (BMDCs). Bone marrow cells (BMCs) were isolated from lean and obese mice, and BMDCs were generated by culturing BMCs with rmGM-CSF. BMDCs were treated with 1 or 10 nM of 1,25-dihydroxyvitamin D3 (1,25(OH)2D3), and maturation was induced by LPS (50 ng/mL) stimulation for 24 h. Cell phenotypes, cytokine productions, and expression of proteins and genes involved in Akt/mTOR signaling pathway and glycolytic pathway were determined. 1,25(OH)2D3 treatment inhibited differentiation of BMDCs (CD11c+ %), expression of phenotypes related with DC function (MHC class II and CD86) and production of IL-12p70 in both lean and obese mice. The expression of PD-L1 and the ratio of IL-10/IL-12p70 were increased by 1,25(OH)2D3. With 1,25(OH)2D3 treatment, Akt/mTOR signaling pathway was suppressed, and expression of genes related to glycolysis (Glut1, Pfkfb4, Hif1A) was increased. The upregulation of glycolysis-related genes observed with 1,25(OH)2D3 treatment seems to be associated with the induction of tolerogenic features of BMDCs from lean and obese mice, and Hif1A seems to have a potential role in conveying the effect of 1,25(OH)2D3 on glycolysis. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Da Hye Cho
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
| | - Ga Young Lee
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
| | - Jeong Hee An
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea
| | - Sung Nim Han
- Department of Food and Nutrition, College of Human Ecology, Seoul National University, Seoul, Korea.,Research Institute of Human Ecology, Seoul National University, Seoul, Korea
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37
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Pandemics of the 21st Century: The Risk Factor for Obese People. Viruses 2021; 14:v14010025. [PMID: 35062229 PMCID: PMC8779521 DOI: 10.3390/v14010025] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 12/15/2021] [Accepted: 12/21/2021] [Indexed: 02/07/2023] Open
Abstract
The number of obese adults and children is increasing worldwide, with obesity now being a global epidemic. Around 2.8 million people die annually from clinical overweight or obesity. Obesity is associated with numerous comorbid conditions including hypertension, cardiovascular disease, type 2 diabetes, hypercholesterolemia, hypertriglyceridemia, nonalcoholic fatty liver disease, and cancer, and even the development of severe disease after infection with viruses. Over the past twenty years, a number of new viruses has emerged and entered the human population. Moreover, influenza (H1N1)pdm09 virus and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have caused pandemics. During pandemics, the number of obese patients presents challenging and complex issues in medical and surgical intensive care units. Morbidity amongst obese individuals is directly proportional to body mass index. In this review, we describe the impact of obesity on the immune system, adult mortality, and immune response after infection with pandemic influenza virus and SARS-CoV-2. Finally, we address the effect of obesity on vaccination.
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38
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High-Fat Diet-Induced Fatty Liver Is Associated with Immunosuppressive Response during Sepsis in Mice. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:5833857. [PMID: 34925696 PMCID: PMC8674062 DOI: 10.1155/2021/5833857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022]
Abstract
High-fat diet-induced fatty liver is an indolent and chronic disease accompanied by immune dysfunction and metabolic disturbances involving numerous biological pathways. This study investigated how this abnormal metabolic disorder influences sepsis in mice. Mice were fed with normal chow (NC) or high-fat diet (HFD), and palmitic acid (PA) was used to treat hepatocytes to mimic fat accumulation in vitro. Lipopolysaccharide (LPS) was used to induce sepsis and related immune responses. Mice fed on a high-fat diet displayed higher mortality and more severe liver damage but compromised immunoreaction. The supernatant from PA-treated primary hepatocytes markedly diminished the inflammatory cytokine expression of macrophages after LPS stimulation, which showed a state of immunosuppression. Metabolomics analysis indicated the level of many key metabolites with possible roles in immunoreaction was altered in the HFD and PA groups compared with corresponding controls; specifically, β-hydroxybutyric acid (BHB) showed an immunosuppressive effect on Raw264.7 cells during the LPS stimulation. Transcriptomic analysis suggested that several differential signaling pathways may be associated with the alteration of immune function between the NC and HFD groups, as well as in the in vitro model. Our study suggests that the consumption of HFD may alter the hepatic metabolic profile, and that certain metabolites may remold the immune system to immunosuppressive state in the context of sepsis.
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39
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Chavez J, Hai R. Effects of Cigarette Smoking on Influenza Virus/Host Interplay. Pathogens 2021; 10:pathogens10121636. [PMID: 34959590 PMCID: PMC8704216 DOI: 10.3390/pathogens10121636] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/13/2021] [Accepted: 12/14/2021] [Indexed: 12/15/2022] Open
Abstract
Cigarette smoking has been shown to increase the risk of respiratory infection, resulting in the exacerbation of infectious disease outcomes. Influenza viruses are a major respiratory viral pathogen, which are responsible for yearly epidemics that result in between 20,000 and 50,000 deaths in the US alone. However, there are limited general summaries on the impact of cigarette smoking on influenza pathogenic outcomes. Here, we will provide a systematic summarization of the current understanding of the interplay of smoking and influenza viral infection with a focus on examining how cigarette smoking affects innate and adaptive immune responses, inflammation levels, tissues that contribute to systemic chronic inflammation, and how this affects influenza A virus (IAV) disease outcomes. This summarization will: (1) help to clarify the conflict in the reports on viral pathogenicity; (2) fill knowledge gaps regarding critical anti-viral defenses such as antibody responses to IAV; and (3) provide an updated understanding of the underlying mechanism behind how cigarette smoking influences IAV pathogenicity.
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40
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Abstract
The global COVID-19 (coronavirus disease 2019) pandemic has become a complex problem that overlaps with a growing public health problem, obesity. Obesity alters different components of the innate and adaptive immune responses, creating a chronic and low-grade state of inflammation. Nutritional status is closely related to a better or worse prognosis of viral infections. Excess weight has been recognised as a risk factor for COVID-19 complications. In addition to the direct risk, obesity triggers other diseases such as diabetes and hypertension, increasing the risk of severe COVID-19. The present review explains the diets that induce obesity and the importance of different foods in this process. We also review tissue disruption in obesity, leading to impaired immune responses and the possible mechanisms by which obesity and its co-morbidities increase COVID-19 morbidity and mortality. Nutritional strategies that support the immune system in patients with obesity and with COVID-19 are also discussed in light of the available data, considering the severity of the infection. The discussions held may contribute to combating this global emergency and planning specific public health policy.
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41
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Willers M, Viemann D. Role of the gut microbiota in airway immunity and host defense against respiratory infections. Biol Chem 2021; 402:1481-1491. [PMID: 34599869 DOI: 10.1515/hsz-2021-0281] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/27/2021] [Indexed: 12/14/2022]
Abstract
Colonization of the intestine with commensal bacteria is known to play a major role in the maintenance of human health. An altered gut microbiome is associated with various ensuing diseases including respiratory diseases. Here, we summarize current knowledge on the impact of the gut microbiota on airway immunity with a focus on consequences for the host defense against respiratory infections. Specific gut commensal microbiota compositions and functions are depicted that mediate protection against respiratory infections with bacterial and viral pathogens. Lastly, we highlight factors that have imprinting effects on the establishment of the gut microbiota early in life and are potentially relevant in the context of respiratory infections. Deepening our understanding of these relationships will allow to exploit the knowledge on how gut microbiome maturation needs to be modulated to ensure lifelong enhanced resistance towards respiratory infections.
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Affiliation(s)
- Maike Willers
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, D-30625 Hannover, Germany
| | - Dorothee Viemann
- Department of Pediatric Pneumology, Allergology and Neonatology, Hannover Medical School, D-30625 Hannover, Germany.,Cluster of Excellence RESIST (EXC 2155), Hannover Medical School, D-30625 Hannover, Germany.,Department of Pediatrics, Translational Pediatrics, University Hospital Würzburg, Zinklesweg 10, D-97078 Würzburg, Germany
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42
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Hulme KD, Noye EC, Short KR, Labzin LI. Dysregulated Inflammation During Obesity: Driving Disease Severity in Influenza Virus and SARS-CoV-2 Infections. Front Immunol 2021; 12:770066. [PMID: 34777390 PMCID: PMC8581451 DOI: 10.3389/fimmu.2021.770066] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 09/30/2021] [Indexed: 12/15/2022] Open
Abstract
Acute inflammation is a critical host defense response during viral infection. When dysregulated, inflammation drives immunopathology and tissue damage. Excessive, damaging inflammation is a hallmark of both pandemic influenza A virus (IAV) infections and Severe Acute Respiratory Syndrome-Coronavirus-2 (SARS-CoV-2) infections. Chronic, low-grade inflammation is also a feature of obesity. In recent years, obesity has been recognized as a growing pandemic with significant mortality and associated costs. Obesity is also an independent risk factor for increased disease severity and death during both IAV and SARS-CoV-2 infection. This review focuses on the effect of obesity on the inflammatory response in the context of viral respiratory infections and how this leads to increased viral pathology. Here, we will review the fundamentals of inflammation, how it is initiated in IAV and SARS-CoV-2 infection and its link to disease severity. We will examine how obesity drives chronic inflammation and trained immunity and how these impact the immune response to IAV and SARS-CoV-2. Finally, we review both medical and non-medical interventions for obesity, how they impact on the inflammatory response and how they could be used to prevent disease severity in obese patients. As projections of global obesity numbers show no sign of slowing down, future pandemic preparedness will require us to consider the metabolic health of the population. Furthermore, if weight-loss alone is insufficient to reduce the risk of increased respiratory virus-related mortality, closer attention must be paid to a patient’s history of health, and new therapeutic options identified.
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Affiliation(s)
- Katina D Hulme
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Ellesandra C Noye
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Kirsty R Short
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia.,Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia
| | - Larisa I Labzin
- Australian Infectious Diseases Research Centre, The University of Queensland, Brisbane, QLD, Australia.,Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD, Australia
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43
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Alarcon PC, Damen MS, Madan R, Deepe GS, Spearman P, Way SS, Divanovic S. Adipocyte inflammation and pathogenesis of viral pneumonias: an overlooked contribution. Mucosal Immunol 2021; 14:1224-1234. [PMID: 33958704 PMCID: PMC8100369 DOI: 10.1038/s41385-021-00404-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/18/2021] [Accepted: 03/27/2021] [Indexed: 02/06/2023]
Abstract
Epidemiological evidence establishes obesity as an independent risk factor for increased susceptibility and severity to viral respiratory pneumonias associated with H1N1 influenza and SARS-CoV-2 pandemics. Given the global obesity prevalence, a better understanding of the mechanisms behind obese susceptibility to infection is imperative. Altered immune cell metabolism and function are often perceived as a key causative factor of dysregulated inflammation. However, the contribution of adipocytes, the dominantly altered cell type in obesity with broad inflammatory properties, to infectious disease pathogenesis remains largely ignored. Thus, skewing of adipocyte-intrinsic cellular metabolism may lead to the development of pathogenic inflammatory adipocytes, which shape the overall immune responses by contributing to either premature immunosenescence, delayed hyperinflammation, or cytokine storm in infections. In this review, we discuss the underappreciated contribution of adipocyte cellular metabolism and adipocyte-produced mediators on immune system modulation and how such interplay may modify disease susceptibility and pathogenesis of influenza and SARS-CoV-2 infections in obese individuals.
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Affiliation(s)
- Pablo C. Alarcon
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Divisions of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, U,Medical Scientist Training Program, Cincinnati, OH, USA,Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Michelle S.M.A. Damen
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Divisions of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, U
| | - Rajat Madan
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Veterans Affairs Medical Center, Cincinnati, OH, USA
| | - George S. Deepe
- Division of Infectious Diseases, Department of Internal Medicine, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Paul Spearman
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Divisions of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Sing Sing Way
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA,Divisions of Infectious Diseases, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA,Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Senad Divanovic
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA. .,Divisions of Immunobiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA. .,Medical Scientist Training Program, Cincinnati, OH, USA. .,Immunology Graduate Program Cincinnati Children's Hospital Medical Center and the University of Cincinnati College of Medicine, Cincinnati, OH, USA. .,Center for Inflammation and Tolerance, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
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44
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Gowda D, Ohno M, B Gowda SG, Chiba H, Shingai M, Kida H, Hui SP. Defining the kinetic effects of infection with influenza virus A/PR8/34 (H1N1) on sphingosine-1-phosphate signaling in mice by targeted LC/MS. Sci Rep 2021; 11:20161. [PMID: 34635791 PMCID: PMC8505484 DOI: 10.1038/s41598-021-99765-0] [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: 05/21/2021] [Accepted: 09/23/2021] [Indexed: 12/26/2022] Open
Abstract
Influenza remains a world-wide health concern, causing 290,000-600,000 deaths and up to 5 million cases of severe illnesses annually. Noticing the host factors that control biological responses, such as inflammatory cytokine secretion, to influenza virus infection is important for the development of novel drugs. Sphingosine-1-phosphate (S1P) is a bioactive sphingolipid metabolite and has essential biological functions in inflammation. However, the kinetic effects of influenza virus infection on physiological S1P levels and their signaling in multiple tissues remain unknown. In this study, we utilized a mouse model intranasally infected with 50 or 500 plaque forming units (PFU) of A/Puerto Rico/8/34 (H1N1; PR8) virus to investigate how S1P levels and expression of its regulating factors are affected by influenza virus infection by the liquid-chromatography/mass spectrometry and real-time PCR, respectively. The S1P level was significantly high in the plasma of mice infected with 500 PFU of the virus than that in control mice at 6 day-post-infection (dpi). Elevated gene expression of sphingosine kinase-1 (Sphk1), an S1P synthase, was observed in the liver, lung, white adipose tissue, heart, and aorta of infected mice. This could be responsible for the increased plasma S1P levels as well as the decrease in the hepatic S1P lyase (Sgpl1) gene in the infected mice. These results indicate modulation of S1P-signaling by influenza virus infection. Since S1P regulates inflammation and leukocyte migration, it must be worth trying to target this signaling to control influenza-associated symptoms.
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Affiliation(s)
- Divyavani Gowda
- Faculty of Health Sciences, Hokkaido University, Kita-12 Nishi-5, Kita-Ku, Sapporo, 060-0812, Japan
| | - Marumi Ohno
- International Institute for Zoonosis Control, Hokkaido University, Kita 20 Nishi10, Kita-ku, Sapporo, 001-0020, Japan
| | | | - Hitoshi Chiba
- Faculty of Health Sciences, Hokkaido University, Kita-12 Nishi-5, Kita-Ku, Sapporo, 060-0812, Japan.,Department of Nutrition, Sapporo University of Health Sciences, Nakanuma Nishi-4-3-1-15, Higashi-Ku, Sapporo, 007-0894, Japan
| | - Masashi Shingai
- International Institute for Zoonosis Control, Hokkaido University, Kita 20 Nishi10, Kita-ku, Sapporo, 001-0020, Japan
| | - Hiroshi Kida
- International Institute for Zoonosis Control, Hokkaido University, Kita 20 Nishi10, Kita-ku, Sapporo, 001-0020, Japan.
| | - Shu-Ping Hui
- Faculty of Health Sciences, Hokkaido University, Kita-12 Nishi-5, Kita-Ku, Sapporo, 060-0812, Japan.
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45
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Geerling E, Stone ET, Steffen TL, Hassert M, Brien JD, Pinto AK. Obesity Enhances Disease Severity in Female Mice Following West Nile Virus Infection. Front Immunol 2021; 12:739025. [PMID: 34531877 PMCID: PMC8439568 DOI: 10.3389/fimmu.2021.739025] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/09/2021] [Indexed: 11/21/2022] Open
Abstract
A rise in adiposity in the United States has resulted in more than 70% of adults being overweight or obese, and global obesity rates have tripled since 1975. Following the 2009 H1N1 pandemic, obesity was characterized as a risk factor that could predict severe infection outcomes to viral infection. Amidst the SARS-CoV-2 pandemic, obesity has remained a significant risk factor for severe viral disease as obese patients have a higher likelihood for developing severe symptoms and requiring hospitalization. However, the mechanism by which obesity enhances viral disease is unknown. In this study, we utilized a diet-induced obesity mouse model of West Nile virus (WNV) infection, a flavivirus that cycles between birds and mosquitoes and incidentally infects both humans and mice. Likelihood for severe WNV disease is associated with risk factors such as diabetes that are comorbidities also linked to obesity. Utilizing this model, we showed that obesity-associated chronic inflammation increased viral disease severity as obese female mice displayed higher mortality rates and elevated viral titers in the central nervous system. In addition, our studies highlighted that obesity also dysregulates host acute adaptive immune responses, as obese female mice displayed significant dysfunction in neutralizing antibody function. These studies highlight that obesity-induced immunological dysfunction begins at early time points post infection and is sustained through memory phase, thus illuminating a potential for obesity to alter the differentiation landscape of adaptive immune cells.
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Affiliation(s)
- Elizabeth Geerling
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - E Taylor Stone
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Tara L Steffen
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Mariah Hassert
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - James D Brien
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
| | - Amelia K Pinto
- Department of Molecular Microbiology and Immunology, Saint Louis University, St. Louis, MO, United States
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46
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Rai P, Chuong C, LeRoith T, Smyth JW, Panov J, Levi M, Kehn-Hall K, Duggal NK, Lucarelli JW. Adenovirus transduction to express human ACE2 causes obesity-specific morbidity in mice, impeding studies on the effect of host nutritional status on SARS-CoV-2 pathogenesis. Virology 2021; 563:98-106. [PMID: 34509029 PMCID: PMC8414371 DOI: 10.1016/j.virol.2021.08.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/27/2021] [Accepted: 08/31/2021] [Indexed: 01/08/2023]
Abstract
The COVID-19 pandemic has paralyzed the global economy and resulted in millions of deaths globally. People with co-morbidities like obesity, diabetes and hypertension are at an increased risk for severe COVID-19 illness. This is of overwhelming concern because 42% of Americans are obese, 30% are pre-diabetic and 9.4% have clinical diabetes. Here, we investigated the effect of obesity on disease severity following SARS-CoV-2 infection using a well-established mouse model of diet-induced obesity. Diet-induced obese and lean control C57BL/6 N mice, transduced for ACE2 expression using replication-defective adenovirus, were infected with SARS-CoV-2, and monitored for lung pathology, viral titers, and cytokine expression. No significant differences in tissue pathology or viral replication was observed between AdV transduced lean and obese groups, infected with SARS-CoV-2, but certain cytokines were expressed more significantly in infected obese mice compared to the lean ones. Notably, significant weight loss was observed in obese mice treated with the adenovirus vector, independent of SARS-CoV-2 infection, suggesting an obesity-dependent morbidity induced by the vector. These data indicate that the adenovirus-transduced mouse model of SARS-CoV-2 infection, as described here and elsewhere, may be inappropriate for nutrition studies.
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Affiliation(s)
- Pallavi Rai
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, VA, USA
| | - Christina Chuong
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, VA, USA
| | - Tanya LeRoith
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, VA, USA
| | - James W Smyth
- Center for Heart and Reparative Medicine, Fralin Biomedical Research Institute, Roanoke, VA, USA; Department of Biological Sciences, College of Science, Virginia Polytechnic State Institute and State University, Blacksburg, VA, USA; Department of Basic Science Education, Virginia Tech Carilion School of Medicine, Roanoke, VA, USA
| | - Julia Panov
- Tauber Bioinformatics Research Center, Haifa 3498838, Israel; Sagol Department of Neurobiology, University of Haifa, Haifa 3498838, Israel
| | - Moshe Levi
- Department of Biochemistry and Molecular & Cellular Biology, Georgetown University, Washington, DC, USA
| | - Kylene Kehn-Hall
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, VA, USA
| | - Nisha K Duggal
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, VA, USA
| | - James-Weger Lucarelli
- Department of Biomedical Sciences and Pathobiology, Virginia Tech, VA-MD Regional College of Veterinary Medicine, Blacksburg, VA, USA.
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47
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Dalamaga M, Christodoulatos GS, Karampela I, Vallianou N, Apovian CM. Understanding the Co-Epidemic of Obesity and COVID-19: Current Evidence, Comparison with Previous Epidemics, Mechanisms, and Preventive and Therapeutic Perspectives. Curr Obes Rep 2021; 10:214-243. [PMID: 33909265 PMCID: PMC8080486 DOI: 10.1007/s13679-021-00436-y] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/14/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW A growing body of evidence suggests that obesity and increased visceral adiposity are strongly and independently linked to adverse outcomes and death due to COVID-19. This review summarizes current epidemiologic data, highlights pathogenetic mechanisms on the association between excess body weight and COVID-19, compares data from previous pandemics, discusses why COVID-19 challenges the "obesity paradox," and presents implications in prevention and treatment as well as future perspectives. RECENT FINDINGS Data from meta-analyses based on recent observational studies have indicated that obesity increases the risks of infection from SARS-CoV-2, severe infection and hospitalization, admission to the ICU and need of invasive mechanical ventilation (IMV), and the risk of mortality, particularly in severe obesity. The risks of IMV and mortality associated with obesity are accentuated in younger individuals (age ≤ 50 years old). The meta-inflammation in obesity intersects with and exacerbates underlying pathogenetic mechanisms in COVID-19 through the following mechanisms and factors: (i) impaired innate and adaptive immune responses; (ii) chronic inflammation and oxidative stress; (iii) endothelial dysfunction, hypercoagulability, and aberrant activation of the complement; (iv) overactivation of the renin-angiotensin-aldosterone system; (v) overexpression of the angiotensin-converting enzyme 2 receptor in the adipose tissue; (vi) associated cardiometabolic comorbidities; (vii) vitamin D deficiency; (viii) gut dysbiosis; and (ix) mechanical and psychological issues. Mechanistic and large epidemiologic studies using big data sources with omics data exploring genetic determinants of risk and disease severity as well as large randomized controlled trials (RCTs) are necessary to shed light on the pathways connecting chronic subclinical inflammation/meta-inflammation with adverse COVID-19 outcomes and establish the ideal preventive and therapeutic approaches for patients with obesity.
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Affiliation(s)
- Maria Dalamaga
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, Goudi, 11527 Athens, Greece
| | - Gerasimos Socrates Christodoulatos
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, Goudi, 11527 Athens, Greece
| | - Irene Karampela
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Mikras Asias 75, Goudi, 11527 Athens, Greece
- Second Department of Critical Care, Attikon General University Hospital, Medical School, National and Kapodistrian University of Athens, 1 Rimini St, Haidari, 12462 Athens, Greece
| | - Natalia Vallianou
- Department of Internal Medicine and Endocrinology, Evangelismos General Hospital of Athens, 45-47 Ypsilantou street, 10676 Athens, Greece
| | - Caroline M. Apovian
- Section of Endocrinology, Diabetes, Nutrition, and Weight Management, Department of Medicine, Boston University School of Medicine and Boston Medical Center, Doctor’s Office Building, 720 Harrison Avenue, Suite, Boston, MA 8100 USA
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48
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Amin M, Fatema K, Arefin S, Hussain F, Bhowmik D, Hossain M. Obesity, a major risk factor for immunity and severe outcomes of COVID-19. Biosci Rep 2021; 41:BSR20210979. [PMID: 34350941 PMCID: PMC8380923 DOI: 10.1042/bsr20210979] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/29/2021] [Accepted: 08/04/2021] [Indexed: 12/15/2022] Open
Abstract
An influenza-like virus named severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) is responsible for COVID-19 disease and spread worldwide within a short time. COVID-19 has now become a significant concern for public health. Obesity is highly prevalent worldwide and is considered a risk factor for impairing the adaptive immune system. Although diabetes, hypertension, cardiovascular disease (CVD), and renal failure are considered the risk factors for COVID-19, obesity is not yet well-considered. The present study approaches establishing a systemic association between the prevalence of obesity and its impact on immunity concerning the severe outcomes of COVID-19 utilizing existing knowledge. Overall study outcomes documented the worldwide prevalence of obesity, its effects on immunity, and a possible underlying mechanism covering obesity-related risk pathways for the severe outcomes of COVID-19. Overall understanding from the present study is that being an immune system impairing factor, the role of obesity in the severe outcomes of COVID-19 is worthy.
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Affiliation(s)
- Mohammad Tohidul Amin
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
| | - Kaniz Fatema
- Department of Applied Chemistry and Chemical Engineering, Noakhali Science and Technology University, Noakhlai-3814, Bangladesh
| | - Sayema Arefin
- Department of Pharmacy, Mawlana Bhashani Science and Technology University, Santosh, Tangail-1902, Bangladesh
| | - Fahad Hussain
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
| | - Dipty Rani Bhowmik
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
| | - Mohammad Salim Hossain
- Department of Pharmacy, Noakhali Science and Technology University, Noakhali-3814, Bangladesh
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49
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Gaur P, Riehn M, Zha L, Köster M, Hauser H, Wirth D. Defective interferon amplification and impaired host responses against influenza virus in obese mice. Obesity (Silver Spring) 2021; 29:1272-1278. [PMID: 34314110 DOI: 10.1002/oby.23196] [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: 11/19/2020] [Revised: 03/16/2021] [Accepted: 04/07/2021] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Obesity is a major risk factor that increases morbidity and mortality upon infection. Although type I and type III interferon (IFN)-induced innate immune responses represent the first line of defense against viral infections, their functionality in the context of metabolic disorders remains largely obscure. This study aimed to investigate IFN responses upon respiratory viral infection in obese mice. METHODS The activation of IFNs as well as IFN regulatory factors (IRFs) upon H3N2 influenza infection in mice upon high-fat-diet feeding was investigated. RESULTS Influenza infection of obese mice was characterized by higher mortalities. In-depth analysis revealed impaired induction of both type I and type III IFNs as well as markedly reduced IFN responses. Notably, it was found that IRF7 gene expression in obese animals was reduced in homeostasis, and its induction by the virus was strongly attenuated. CONCLUSIONS The results suggest that the attenuated IRF7 expression and induction are responsible for the reduced expression levels of type I and III IFNs and, thus, for the higher susceptibility and severity of respiratory infections in obese mice.
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Affiliation(s)
- Pratibha Gaur
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Mathias Riehn
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Lisha Zha
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Mario Köster
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Hansjörg Hauser
- Staff Unit Scientific Strategy, Helmholtz Centre for Infection Research, Braunschweig, Germany
| | - Dagmar Wirth
- Model Systems for Infection and Immunity, Helmholtz Centre for Infection Research, Braunschweig, Germany
- Institute for Experimental Hematology, Hannover Medical School, Hannover, Germany
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50
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The Mechanism behind Influenza Virus Cytokine Storm. Viruses 2021; 13:v13071362. [PMID: 34372568 PMCID: PMC8310017 DOI: 10.3390/v13071362] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 07/05/2021] [Accepted: 07/09/2021] [Indexed: 02/06/2023] Open
Abstract
Influenza viruses are still a serious threat to human health. Cytokines are essential for cell-to-cell communication and viral clearance in the immune system, but excessive cytokines can cause serious immune pathology. Deaths caused by severe influenza are usually related to cytokine storms. The recent literature has described the mechanism behind the cytokine–storm network and how it can exacerbate host pathological damage. Biological factors such as sex, age, and obesity may cause biological differences between different individuals, which affects cytokine storms induced by the influenza virus. In this review, we summarize the mechanism behind influenza virus cytokine storms and the differences in cytokine storms of different ages and sexes, and in obesity.
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