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Sha H, Zhu W. Employing Bidirectional Two-Sample Mendelian Randomization Analysis to Verify the Potential of Polyunsaturated Fatty Acid Levels in the Prevention of Pancreatic Cancer. Curr Issues Mol Biol 2024; 46:6041-6051. [PMID: 38921031 PMCID: PMC11202278 DOI: 10.3390/cimb46060360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 06/27/2024] Open
Abstract
Polyunsaturated fatty acids (PUFAs), specifically Omega-3 (FAω3) and docosahexaenoic acid (DHA), have been studied for their potential role in modulating pancreatic cancer (PC) risk. Although observational studies suggest a beneficial effect in reducing this risk, their findings are often limited by confounding variables and issues of reverse causation. This study used a two-way two-sample Mendelian randomization (MR) method to test the hypothesized genetic causal relationship between PUFAs and PC risk. Data from an extensive genome-wide association study (GWAS) were analyzed, focusing on FAω3 and FAω6 levels, their ratios, and DHA as variables and PC incidence as outcomes. This relationship was comprehensively evaluated using related MR methods, such as inverse variance weighting (IVW), MR Egger, and weighted median (WM). This study finds a significant negative correlation between FAω3 and DHA levels and PC risk, while FAω6 levels show no significant correlation. Interestingly, the ratio of FAω6 to FAω3 was positively associated with increased risk of PC. Neither the MR Egger nor the MR-PRESSO tests detected significant pleiotropy, nor did the Cochrane's Q test show significant heterogeneity. Leave-one-out analyzes further confirmed the robustness of these results. Using MR analysis of two samples, this study provides genetic causal evidence that FAω3 and DHA levels reduce the risk of PC, whereas the ratio of FAω6 to FAω3 increases the risk of PC. These insights highlight the potential utility of supplementing FAω3 and DHA or altering PUFAs in developing PC prevention strategies.
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Affiliation(s)
| | - Weifeng Zhu
- School of Basic Medical Sciences, Jiangxi Medical College, Nanchang University, Nangchang 330006, China;
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Armitage CW, Bryan ER, Trim L, Palframan E, Wager L, Beagley KW, Carey AJ. Haematopoietic innate interleukin 17A production drives immunopathology in female mouse genital Chlamydia muridarum infection. Scand J Immunol 2024; 99:e13359. [PMID: 38605527 DOI: 10.1111/sji.13359] [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: 10/05/2023] [Revised: 01/02/2024] [Accepted: 01/09/2024] [Indexed: 04/13/2024]
Abstract
Chlamydia trachomatis infection is the leading cause of bacterial urogenital infection and has been demonstrated to drive inflammation and scarring of the reproductive tract. Recent studies have identified key triggers of proinflammatory adaptive immune responses driven by innate leukocytes and epithelia driving immunopathology. Utilizing chimeric mouse models, we investigated the definitive source and role of IL17 and IL17 signalling receptors during early Chlamydia muridarum infection of the female urogenital tract. Bone marrow transplants from wild-type (WT) and IL17A-/- mice to recipients demonstrated equivocal infection kinetics in the reproductive tract, but interestingly, adoptive transfer of IL17A-/- immune cells to WT recipients resulted in no infertility, suggesting a haematopoietic (as opposed to tissue) source of IL17 driving immunopathology. To further delineate the role of IL17 in immunopathology, we infected WT and IL17 receptor A (IL17RA)-/- female mice and observed a significant reduction in immunopathology in IL17RA-/- mice. WT bone marrow transplants to IL17RA-/- recipient mice prevented hydrosalpinx, suggesting signalling through IL17RA drives immunopathology. Furthermore, early chemical inhibition of IL17 signalling significantly reduced hydrosalpinx, suggesting IL17 acts as an innate driver of disease. Early during the infection, IL17 was produced by γδ T cells in the cervico-vagina, but more importantly, by neutrophils at the site of infertility in the oviducts. Taken together, these data suggest innate production of IL17 by haematopoietic leukocytes drives immunopathology in the epithelia during early C. muridarum infection of the female reproductive tract.
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Affiliation(s)
- Charles W Armitage
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
- Peter Goher Department of Immunobiology, Kings College London, London, UK
| | - Emily R Bryan
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Logan Trim
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Ella Palframan
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Lucas Wager
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Kenneth W Beagley
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Alison J Carey
- School of Biomedical Science and Centre for Immunology and Infection Control, Faculty of Health, Queensland University of Technology, Brisbane, Queensland, Australia
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You M, Shamseldin HE, Fogle HM, Rushing BR, AlMalki RH, Jaafar A, Hashem M, Abdulwahab F, Rahman AMA, Krupenko NI, Alkuraya FS, Krupenko SA. Further delineation of the phenotypic and metabolomic profile of ALDH1L2-related neurodevelopmental disorder. Clin Genet 2024; 105:488-498. [PMID: 38193334 PMCID: PMC10990829 DOI: 10.1111/cge.14479] [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: 11/09/2023] [Revised: 12/22/2023] [Accepted: 12/28/2023] [Indexed: 01/10/2024]
Abstract
ALDH1L2, a mitochondrial enzyme in folate metabolism, converts 10-formyl-THF (10-formyltetrahydrofolate) to THF (tetrahydrofolate) and CO2. At the cellular level, deficiency of this NADP+-dependent reaction results in marked reduction in NADPH/NADP+ ratio and reduced mitochondrial ATP. Thus far, a single patient with biallelic ALDH1L2 variants and the phenotype of a neurodevelopmental disorder has been reported. Here, we describe another patient with a neurodevelopmental disorder associated with a novel homozygous missense variant in ALDH1L2, Pro133His. The variant caused marked reduction in the ALDH1L2 enzyme activity in skin fibroblasts derived from the patient as probed by 10-FDDF, a stable synthetic analog of 10-formyl-THF. Additional associated abnormalities in these fibroblasts include reduced NADPH/NADP+ ratio and pool of mitochondrial ATP, upregulated autophagy and dramatically altered metabolomic profile. Overall, our study further supports a link between ALDH1L2 deficiency and abnormal neurodevelopment in humans.
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Affiliation(s)
- Mikyoung You
- UNC Nutrition Research Institute, Kannapolis, NC, USA
| | - Hanan E. Shamseldin
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Halle M. Fogle
- UNC Nutrition Research Institute, Kannapolis, NC, USA
- Department of Nutrition, University of North Carolina-Chapel Hill, NC, USA
| | - Blake R. Rushing
- UNC Nutrition Research Institute, Kannapolis, NC, USA
- Department of Nutrition, University of North Carolina-Chapel Hill, NC, USA
| | - Reem H. AlMalki
- Metabolomics Section, Department of Clinical Genomics, Center for Genome Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Amal Jaafar
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Mais Hashem
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Firdous Abdulwahab
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Anas M. Abdel Rahman
- Metabolomics Section, Department of Clinical Genomics, Center for Genome Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
- Department of Biochemistry and Molecular Medicine, College of Medicine, Al Faisal University, Riyadh, Saudi Arabia
| | - Natalia I. Krupenko
- UNC Nutrition Research Institute, Kannapolis, NC, USA
- Department of Nutrition, University of North Carolina-Chapel Hill, NC, USA
| | - Fowzan S. Alkuraya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center (KFSHRC), Riyadh, Saudi Arabia
| | - Sergey A. Krupenko
- UNC Nutrition Research Institute, Kannapolis, NC, USA
- Department of Nutrition, University of North Carolina-Chapel Hill, NC, USA
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Wolszczak-Biedrzycka B, Dorf J, Matowicka-Karna J, Wojewódzka-Żeleźniakowicz M, Żukowski P, Zalewska A, Maciejczyk M. Significance of nitrosative stress and glycoxidation products in the diagnosis of COVID-19. Sci Rep 2024; 14:9198. [PMID: 38649417 PMCID: PMC11035544 DOI: 10.1038/s41598-024-59876-w] [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: 02/10/2024] [Accepted: 04/16/2024] [Indexed: 04/25/2024] Open
Abstract
Nitrosative stress promotes protein glycoxidation, and both processes can occur during an infection with the SARS-CoV-2 virus. Therefore, the aim of this study was to assess selected nitrosative stress parameters and protein glycoxidation products in COVID-19 patients and convalescents relative to healthy subjects, including in reference to the severity of COVID-19 symptoms. The diagnostic utility of nitrosative stress and protein glycoxidation biomarkers was also evaluated in COVID-19 patients. The study involved 218 patients with COVID-19, 69 convalescents, and 48 healthy subjects. Nitrosative stress parameters (NO, S-nitrosothiols, nitrotyrosine) and protein glycoxidation products (tryptophan, kynurenine, N-formylkynurenine, dityrosine, AGEs) were measured in the blood plasma or serum with the use of colorimetric/fluorometric methods. The levels of NO (p = 0.0480), S-nitrosothiols (p = 0.0004), nitrotyrosine (p = 0.0175), kynurenine (p < 0.0001), N-formylkynurenine (p < 0.0001), dityrosine (p < 0.0001), and AGEs (p < 0.0001) were significantly higher, whereas tryptophan fluorescence was significantly (p < 0.0001) lower in COVID-19 patients than in the control group. Significant differences in the analyzed parameters were observed in different stages of COVID-19. In turn, the concentrations of kynurenine (p < 0.0001), N-formylkynurenine (p < 0.0001), dityrosine (p < 0.0001), and AGEs (p < 0.0001) were significantly higher, whereas tryptophan levels were significantly (p < 0.0001) lower in convalescents than in healthy controls. The ROC analysis revealed that protein glycoxidation products can be useful for diagnosing infections with the SARS-CoV-2 virus because they differentiate COVID-19 patients (KN: sensitivity-91.20%, specificity-92.00%; NFK: sensitivity-92.37%, specificity-92.00%; AGEs: sensitivity-99,02%, specificity-100%) and convalescents (KN: sensitivity-82.22%, specificity-84.00%; NFK: sensitivity-82,86%, specificity-86,00%; DT: sensitivity-100%, specificity-100%; AGE: sensitivity-100%, specificity-100%) from healthy subjects with high sensitivity and specificity. Nitrosative stress and protein glycoxidation are intensified both during and after an infection with the SARS-CoV-2 virus. The levels of redox biomarkers fluctuate in different stages of the disease. Circulating biomarkers of nitrosative stress/protein glycoxidation have potential diagnostic utility in both COVID-19 patients and convalescents.
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Affiliation(s)
- Blanka Wolszczak-Biedrzycka
- Department of Psychology and Sociology of Health and Public Health, University of Warmia and Mazury in Olsztyn, 10-900, Olsztyn, Poland.
| | - Justyna Dorf
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, 15-089, Białystok, Poland
| | - Joanna Matowicka-Karna
- Department of Clinical Laboratory Diagnostics, Medical University of Bialystok, 15-089, Białystok, Poland
| | | | - Piotr Żukowski
- Department of Restorative Dentistry, Croydon University Hospital, 530 London Road, Croydon, Surrey, CR7 7YE, UK
| | - Anna Zalewska
- Independent Laboratory of Experimental Dentistry, Medical University of Bialystok, 15-089, Białystok, Poland
| | - Mateusz Maciejczyk
- Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, 15-089, Białystok, Poland
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Liu X, Chen L, Peng W, Deng H, Ni H, Tong H, Hu H, Wang S, Qian J, Liang A, Chen K. Th17/Treg balance: the bloom and wane in the pathophysiology of sepsis. Front Immunol 2024; 15:1356869. [PMID: 38558800 PMCID: PMC10978743 DOI: 10.3389/fimmu.2024.1356869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 02/20/2024] [Indexed: 04/04/2024] Open
Abstract
Sepsis is a multi-organ dysfunction characterized by an unregulated host response to infection. It is associated with high morbidity, rapid disease progression, and high mortality. Current therapies mainly focus on symptomatic treatment, such as blood volume supplementation and antibiotic use, but their effectiveness is limited. Th17/Treg balance, based on its inflammatory property, plays a crucial role in determining the direction of the inflammatory response and the regression of organ damage in sepsis patients. This review provides a summary of the changes in T-helper (Th) 17 cell and regulatory T (Treg) cell differentiation and function during sepsis, the heterogeneity of Th17/Treg balance in the inflammatory response, and the relationship between Th17/Treg balance and organ damage. Th17/Treg balance exerts significant control over the bloom and wanes in host inflammatory response throughout sepsis.
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Affiliation(s)
- Xinyong Liu
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Longwang Chen
- Emergency Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Wei Peng
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Hongsheng Deng
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Hongying Ni
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Hongjie Tong
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Hangbo Hu
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Shengchao Wang
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Jin Qian
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
| | - Andong Liang
- Nursing Faculty, School of Medicine, Jinhua Polytechnic, Jinhua, China
| | - Kun Chen
- Department of Critical Care Medicine, Affiliated Jinhua Hospital, Zhejiang University School of Medicine, Jinhua, China
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