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Mangone G, Serranti D, Bartolini E, Vigna V, Mastrangelo G, Ricci S, Trapani S, Azzari C, Resti M, Indolfi G. SNPs of the IFNL favour spontaneous clearance of HCV infection in children. Pediatr Res 2022; 91:1516-1521. [PMID: 33966053 DOI: 10.1038/s41390-021-01557-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 03/08/2021] [Accepted: 03/19/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Both spontaneous and treatment-induced clearance of hepatitis C virus (HCV) in adults have been associated with genetic polymorphisms in the interferon-λ genes. The aim of the present study was to confirm the association between the rs12979860 and evaluate the association between the rs368234815 and the rs4803217 single-nucleotide polymorphisms (SNPs) of the interferon-λ genes and the outcome of the infection in children. METHODS Alleles and genotypes frequencies of 32 children, who presented spontaneous clearance of the virus and 135 children, with viral persistence were compared with ethnically matched controls obtained from the 1000 Genomes Project and the International HapMap Project databases. RESULTS The frequencies of the C/C genotype of rs12979860, the TT/TT of the rs368234815 and the A/C of the rs4803217 were higher in the clearance group than in children with viral persistence (C/C versus T/T + C/T odds ratio (OR): 2.6; 90% confidence intervals (CI): 1.3-5; p = 0.01; TT/TT versus ΔG/TT + ΔG/ΔG OR: 2.8; 90% CI: 1.4-5.5; p = 0.01; and A/A versus A/C OR: 8.3; 90% CI: 1.5-45.9; p = 0.017, respectively) and with the ethnically matched controls. CONCLUSIONS The rs12979860, the rs368234815 and the rs4803217 SNPs are associated with spontaneous clearance of HCV in children. IMPACT Innate immune system response has a key role in the outcome of vertically acquired HCV infection in children. The rs12979860, the rs368234815 and the rs4803217 SNPs are associated with spontaneous clearance of HCV in children. Interferons-λ activate the Janus kinase-Stat pathway, which in turn induces several interferon-stimulated genes, leading to suppression of HCV replication both in vivo and in vitro.
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Affiliation(s)
- Giusi Mangone
- Immunology Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Daniele Serranti
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Elisa Bartolini
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Veronica Vigna
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy
| | - Greta Mastrangelo
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy.,Department NEUROFARBA, University of Florence, Firenze, Italy
| | - Silvia Ricci
- Department of Health Sciences, University of Florence, Firenze, Italy
| | - Sandra Trapani
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy.,Department of Health Sciences, University of Florence, Firenze, Italy
| | - Chiara Azzari
- Immunology Unit, Meyer Children's University Hospital of Florence, Firenze, Italy.,Department of Health Sciences, University of Florence, Firenze, Italy
| | - Massimo Resti
- Department of Health Sciences, University of Florence, Firenze, Italy
| | - Giuseppe Indolfi
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Firenze, Italy. .,Department NEUROFARBA, University of Florence, Firenze, Italy.
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Roumeliotis S, Roumeliotis A, Stamou A, Panagoutsos S, Manolopoulos VG, Tsetsos F, Georgitsi M, Liakopoulos V. Association of rs11780592 Polymorphism in the Human Soluble Epoxide Hydrolase Gene (EPHX2) with Oxidized LDL and Mortality in Patients with Diabetic Chronic Kidney Disease. Oxid Med Cell Longev 2021; 2021:8817502. [PMID: 34040693 DOI: 10.1155/2021/8817502] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 04/01/2021] [Accepted: 04/24/2021] [Indexed: 01/30/2023]
Abstract
Soluble epoxide hydrolase 2 (EPHX2) is an enzyme promoting increased cellular apoptosis through induction of oxidative stress (OS) and inflammation. The EPHX2 gene which encodes soluble EPHX2 might be implicated in the pathogenesis and development of OS and atherosclerosis. We aimed to assess the possible association between two functional polymorphisms of the EPHX2 gene (rs2741335 and rs11780592) with oxidized LDL (ox-LDL), carotid atherosclerosis, mortality, and cardiovascular (CV) disease in 118 patients with diabetic chronic kidney disease (CKD). At baseline, ox-LDL and carotid intima-media thickness (cIMT) were evaluated and all patients were followed for seven years with outcomes all-cause mortality and CV events. rs11780592 EPHX2 polymorphism was associated with ox-LDL, cIMT, albuminuria, and hypertension. Compared to AG and GG, AA homozygotes had higher values of albuminuria, ox-LDL, and cIMT (p = 0.046, p = 0.003, and p = 0.038, respectively). These associations remained significant, even after grouping for the G allele. After the follow-up period, 42/118 patients died (30/60 with AA genotype, 11/42 with AG genotype, and 1/12 with GG genotype) and 49/118 experienced a new CV event (fatal or nonfatal). The Kaplan-Meier analysis revealed that patients with the AA genotype exhibited a significantly higher mortality risk, compared to patients with AG and GG genotypes (p = 0.006). This association became even stronger, when AG and GG genotypes were grouped (AA vs. AG/GG, p = 0.002). AA homozygotes were strongly associated with all-cause mortality in both univariate (hazard ratio (HR) = 2.74, confidence interval (CI) = 1.40-5.35, p = 0.003) and multivariate Cox regression analysis (HR = 2.61, CI = 1.32-5.17, p = 0.006). In conclusion, our study demonstrated that genetic variations of EPHX2 gene were associated with increased circulating ox-LDL, increased cIMT, and all-cause mortality in diabetic CKD. Since EPHX2 regulates the cholesterol efflux and the oxidation of LDL in foam cells and macrophages, our study suggests that a genetic basis to endothelial dysfunction and OS might be present in diabetic CKD.
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Marsh S, King CR, Van Booven DJ, Revollo JY, Gilman RH, McLeod HL. Pharmacogenomic assessment of Mexican and Peruvian populations. Pharmacogenomics 2016; 16:441-8. [PMID: 25916516 DOI: 10.2217/pgs.15.10] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Clinically relevant polymorphisms often demonstrate population-specific allele frequencies. Central and South America remain largely uncategorized in the context of pharmacogenomics. MATERIALS & METHODS We assessed 15 polymorphisms from 12 genes (ABCB1 3435C>T, ABCG2 Q141K, CYP1B1*3, CYP2C19*2, CYP3A4*1B, CYP3A5*3C, ERCC1 N118N, ERCC2 K751Q, GSTP1 I105V, TPMT 238G>C, TPMT 460G>A, TPMT 719A>G, TYMS TSER, UGT1A1*28 and UGT1A1 -3156G>A) in 81 Peruvian and 95 Mexican individuals. RESULTS Six polymorphism frequencies differed significantly between the two populations: ABCB1 3435C>T, CYP1B1*3, GSTP1 I105V, TPMT 460G>A, UGT1A1*28 and UGT1A1 -3156G>A. The pattern of observed allele frequencies for all polymorphisms could not be accurately estimated from any single previously studied population. CONCLUSION This highlights the need to expand the scope of geographic data for use in pharmacogenomics studies.
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Affiliation(s)
- Sharon Marsh
- Faculty of Pharmacy & Pharmaceutical Sciences, 3142F Katz Centre for Pharmacy & Health Research, University of Alberta, Edmonton, AB T6G 2E1, Canada
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Ragia G, Giannakopoulou E, Karaglani M, Karantza IM, Tavridou A, Manolopoulos VG. Frequency of CYP450 enzyme gene polymorphisms in the Greek population: review of the literature, original findings and clinical significance. ACTA ACUST UNITED AC 2015; 29:235-48. [PMID: 24756055 DOI: 10.1515/dmdi-2014-0006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 03/26/2014] [Indexed: 12/21/2022]
Abstract
The cytochrome P450 (CYP450) enzyme family is involved in the oxidative metabolism of many therapeutic drugs and various endogenous substrates. These enzymes are highly polymorphic. Prevalence of CYP450 enzyme gene polymorphisms vary among different populations and substantial inter- and intra-ethnic variability in frequency of CYP450 enzyme gene polymorphisms has been reported. This paper provides an overview and investigation of CYP450 genotypic and phenotypic reports published in the Greek population.
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Indolfi G, Mangone G, Bartolini E, Nebbia G, Calvo PL, Moriondo M, Tovo PA, de Martino M, Azzari C, Resti M. Comparative analysis of rs12979860 SNP of the IFNL3 gene in children with hepatitis C and ethnic matched controls using 1000 Genomes Project data. PLoS One 2014; 9:e85899. [PMID: 24465773 PMCID: PMC3895017 DOI: 10.1371/journal.pone.0085899] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 12/05/2013] [Indexed: 12/17/2022] Open
Abstract
The rs12979860 single nucleotide polymorphism located on chromosome 19q13.13 near the interferon L3 gene (formerly and commonly known as interleukin 28B gene) has been associated in adults with both spontaneous and treatment induced clearance of hepatitis C virus. Although the exact mechanism of these associations remains unclear, it suggests that variation in genes involved in the immune response against the virus favours viral clearance. Limited and preliminary data are available on this issue in children. The aim of the present study was to evaluate, in a representative cohort of children with perinatal infection, the potential association between rs12979860 single nucleotide polymorphism and the outcome of hepatitis C virus infection. Alleles and genotypes frequencies were evaluated in 30 children who spontaneously cleared the virus and in 147 children with persistent infection and were compared with a population sample of ethnically matched controls with unknown hepatitis C status obtained using the 1000 Genomes Project data. The C allele and the C/C genotype showed greater frequencies in the clearance group (76.7% and 56.7%, respectively) when compared with both children with viral persistence (C allele 56.5%, p = 0.004; C/C genotype 32.7%, p = 0.02) and with the ethnically matched individuals (C allele 59.7%, p = 0.02; C/C genotype 34.7%, p = 0.03). Children with the C/C genotype were 2 times more likely to clear hepatitis C virus relative to children with the C/T and T/T genotypes combined (odds ratio: 2.7; 90% confidence intervals: 1.3-5.8). The present study provides the evidence that the rs12979860 single nucleotide polymorphism influences the natural history of hepatitis C virus in children.
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Affiliation(s)
- Giuseppe Indolfi
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Giusi Mangone
- Immunology Unit and Laboratory, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Elisa Bartolini
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Gabriella Nebbia
- U.O. Pediatria 2, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milano, Italy
| | - Pier Luigi Calvo
- Department of Pediatrics, Infectious Diseases Unit, University of Turin, Italy Regina Margherita Children's Hospital, Turin, Italy
| | - Maria Moriondo
- Immunology Unit and Laboratory, Meyer Children's University Hospital of Florence, Florence, Italy
| | - Pier-Angelo Tovo
- Department of Pediatrics, Infectious Diseases Unit, University of Turin, Italy Regina Margherita Children's Hospital, Turin, Italy
| | | | - Chiara Azzari
- Immunology Unit and Laboratory, Meyer Children's University Hospital of Florence, Florence, Italy
- Department of Health Sciences, University of Florence, Florence, Italy
| | - Massimo Resti
- Paediatric and Liver Unit, Meyer Children's University Hospital of Florence, Florence, Italy
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Kara E, Xiromerisiou G, Spanaki C, Bozi M, Koutsis G, Panas M, Dardiotis E, Ralli S, Bras J, Letson C, Edsall C, Pliner H, Arepalli S, Kalinderi K, Fidani L, Bostantjopoulou S, Keller MF, Wood NW, Hardy J, Houlden H, Stefanis L, Plaitakis A, Hernandez D, Hadjigeorgiou GM, Nalls MA, Singleton AB. Assessment of Parkinson's disease risk loci in Greece. Neurobiol Aging 2014; 35:442.e9-442.e16. [PMID: 24080174 DOI: 10.1016/j.neurobiolaging.2013.07.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Accepted: 07/15/2013] [Indexed: 12/14/2022]
Abstract
Genome-wide association studies (GWAS) have been shown to be a powerful approach to identify risk loci for neurodegenerative diseases. Recent GWAS in Parkinson's disease (PD) have been successful in identifying numerous risk variants pointing to novel pathways potentially implicated in the pathogenesis of PD. Contributing to these GWAS efforts, we performed genotyping of previously identified risk alleles in PD patients and control subjects from Greece. We showed that previously published risk profiles for Northern European and American populations are also applicable to the Greek population. In addition, although our study was largely underpowered to detect individual associations, we replicated 5 of 32 previously published risk variants with nominal p values <0.05. Genome-wide complex trait analysis revealed that known risk loci explain disease risk in 1.27% of Greek PD patients. Collectively, these results indicate that there is likely a substantial genetic component to PD in Greece, similarly to other worldwide populations, that remains to be discovered.
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