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Yun L, Ge M, Xu R, Zheng F, Zhao X, Li X. C677T Gene Polymorphism of MTHFR Is a Risk Factor for Impaired Renal Function in Pregnant Women With Preeclampsia in the Chinese Han Population. Front Cardiovasc Med 2022; 9:902346. [PMID: 35711354 PMCID: PMC9196626 DOI: 10.3389/fcvm.2022.902346] [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: 03/23/2022] [Accepted: 05/02/2022] [Indexed: 11/29/2022] Open
Abstract
Impaired renal function in pregnant women with preeclampsia is particularly common, yet there is no consensus about implementation. This lack of consensus is due in part to uncertainty about risks for disease progression. Limited evidence suggests that C677T gene polymorphism of 5, 10-methylenetetrahydrofolate reductase (MTHFR C677T) may affect impaired renal function in pregnant women with preeclampsia in Chinese Han population. To investigate the association between MTHFR C677T and impaired renal function in pregnant women with preeclampsia, a total of 327 pregnant women diagnosed with gestational hypertension (GH) or preeclampsia-eclampsia (PE) from January 2016 to December 2021 were selected as the study subjects. The personal information, gestational information, clinical indicators, and the C677T gene polymorphism of MTHFR were tested. Compared with the GH group, the PE renal function impairment group had increased in blood pressure, homocysteine level, liver and kidney function indicators (creatinine, uric acid, urea nitrogen, cystatin C, alanine aminotransferase, aspartate aminotransferase, cholyglycine), and blood lipids (total cholesterol, triglycerides and low density lipoprotein) but had reductions in plasma protein (total protein, albumin, globulin, prealbumin), trace elements (calcium and zinc), prothrombin time and fibrinogen. The homocysteine level in the TT genotype was higher than that in the CC and CT genotypes. Binary logistic regression analysis showed that the MTHFR C677T gene polymorphism was associated with PE renal function impairment in the recessive model (OR: 1.620, 95% CI: 1.033-2.541, P < 0.05). These findings show that the C677T gene polymorphism of MTHFR is an independent risk factor for impaired renal function in pregnant Chinese Han women with PE.
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Affiliation(s)
- Lin Yun
- Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
- Department of Medicine, Jinan Maternity and Child Care Hospital, Jinan, China
| | - Meiqi Ge
- Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
| | - Rui Xu
- Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, China
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Jinan, China
| | - Fei Zheng
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Jinan, China
| | - Xueqiang Zhao
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Jinan, China
| | - Xinran Li
- Department of Cardiology, The First Affiliated Hospital of Shandong First Medical University & Shandong Provincial Qianfoshan Hospital, Shandong Medicine and Health Key Laboratory of Cardiac Electrophysiology and Arrhythmia, Jinan, China
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Kulmann-Leal B, Ellwanger JH, Chies JAB. CCR5Δ32 in Brazil: Impacts of a European Genetic Variant on a Highly Admixed Population. Front Immunol 2021; 12:758358. [PMID: 34956188 PMCID: PMC8703165 DOI: 10.3389/fimmu.2021.758358] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/23/2021] [Indexed: 01/10/2023] Open
Abstract
The genetic background of Brazilians encompasses Amerindian, African, and European components as a result of the colonization of an already Amerindian inhabited region by Europeans, associated to a massive influx of Africans. Other migratory flows introduced into the Brazilian population genetic components from Asia and the Middle East. Currently, Brazil has a highly admixed population and, therefore, the study of genetic factors in the context of health or disease in Brazil is a challenging and remarkably interesting subject. This phenomenon is exemplified by the genetic variant CCR5Δ32, a 32 base-pair deletion in the CCR5 gene. CCR5Δ32 originated in Europe, but the time of origin as well as the selective pressures that allowed the maintenance of this variant and the establishment of its current frequencies in the different human populations is still a field of debates. Due to its origin, the CCR5Δ32 allele frequency is high in European-derived populations (~10%) and low in Asian and African native human populations. In Brazil, the CCR5Δ32 allele frequency is intermediate (4-6%) and varies on the Brazilian States, depending on the migratory history of each region. CCR5 is a protein that regulates the activity of several immune cells, also acting as the main HIV-1 co-receptor. The CCR5 expression is influenced by CCR5Δ32 genotypes. No CCR5 expression is observed in CCR5Δ32 homozygous individuals. Thus, the CCR5Δ32 has particular effects on different diseases. At the population level, the effect that CCR5Δ32 has on European populations may be different than that observed in highly admixed populations. Besides less evident due to its low frequency in admixed groups, the effect of the CCR5Δ32 variant may be affected by other genetic traits. Understanding the effects of CCR5Δ32 on Brazilians is essential to predict the potential use of pharmacological CCR5 modulators in Brazil. Therefore, this study reviews the impacts of the CCR5Δ32 on the Brazilian population, considering infectious diseases, inflammatory conditions, and cancer. Finally, this article provides a general discussion concerning the impacts of a European-derived variant, the CCR5Δ32, on a highly admixed population.
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Affiliation(s)
| | | | - José Artur Bogo Chies
- Laboratório de Imunobiologia e Imunogenética, Programa de Pós-Graduação em Genética e Biologia Molecular (PPGBM), Departamento de Genética, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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CCR5 gene editing – Revisiting pros and cons of CCR5 absence. INFECTION GENETICS AND EVOLUTION 2019; 68:218-220. [DOI: 10.1016/j.meegid.2018.12.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 12/19/2018] [Accepted: 12/23/2018] [Indexed: 01/08/2023]
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Kaminski VDL, Ellwanger JH, Sandrim V, Pontillo A, Chies JAB. Influence of NKG2C gene deletion and CCR5Δ32 in Pre‐eclampsia—Approaching the effect of innate immune gene variants in pregnancy. Int J Immunogenet 2019; 46:82-87. [DOI: 10.1111/iji.12416] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/28/2018] [Accepted: 01/03/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Valéria de Lima Kaminski
- Laboratório de Imunobiologia e Imunogenética, Programa de Pós‐Graduação em Genética e Biologia Molecular, Departamento de Genética Universidade Federal do Rio Grande do Sul ‐ UFRGS Porto Alegre RS Brazil
| | - Joel Henrique Ellwanger
- Laboratório de Imunobiologia e Imunogenética, Programa de Pós‐Graduação em Genética e Biologia Molecular, Departamento de Genética Universidade Federal do Rio Grande do Sul ‐ UFRGS Porto Alegre RS Brazil
| | - Valeria Sandrim
- Departamento de Farmacologia, Instituto de Biociências UNESP‐Universidade Estadual Paulista Botucatu SP Brazil
| | - Alessandra Pontillo
- Laboratório de Imunogenetica Departamento de Imunologia, Instituto de Ciências Biomédicas Universidade de São Paulo ‐ USP São Paulo SP Brazil
| | - José Artur Bogo Chies
- Laboratório de Imunobiologia e Imunogenética, Programa de Pós‐Graduação em Genética e Biologia Molecular, Departamento de Genética Universidade Federal do Rio Grande do Sul ‐ UFRGS Porto Alegre RS Brazil
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Michita RT, Kaminski VDL, Chies JAB. Genetic Variants in Preeclampsia: Lessons From Studies in Latin-American Populations. Front Physiol 2018; 9:1771. [PMID: 30618791 PMCID: PMC6302048 DOI: 10.3389/fphys.2018.01771] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 11/23/2018] [Indexed: 12/13/2022] Open
Abstract
Placental vascularization is a tightly regulated physiological process in which the maternal immune system plays a fundamental role. Vascularization of the maternal-placental interface involves a wide range of mechanisms primarily orchestrated by the fetal extravillous trophoblast and maternal immune cells. In a healthy pregnancy, an immune cross-talk between the mother and fetal cells results in the secretion of immunomodulatory mediators, apoptosis of specific cells, cellular differentiation/proliferation, angiogenesis, and vasculogenesis, altogether favoring a suitable microenvironment for the developing embryo. In the context of vasculopathy underlying common pregnancy disorders, it is believed that inefficient invasion of extravillous trophoblast cells in the endometrium leads to a poor placental blood supply, which, in turn, leads to decreased secretion of angiogenic factors, hypoxia, and inflammation commonly associated with preterm delivery, intrauterine growth restriction, and preeclampsia. In this review, we will focus on studies published by Latin American research groups, providing an extensive review of the role of genetic variants from candidate genes involved in a broad spectrum of biological processes underlying the pathophysiology of preeclampsia. In addition, we will discuss how these studies contribute to fill gaps in the current understanding of preeclampsia. Finally, we discuss some trending topics from important fields associated with pregnancy vascular disorders (e.g., epigenetics, transplantation biology, and non-coding RNAs) and underscore their possible implications in the pathophysiology of preeclampsia. As a result, these efforts are expected to give an overview of the extent of scientific research produced in Latin America and encourage multicentric collaborations by highlighted regional research groups involved in preeclampsia investigation.
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Affiliation(s)
- Rafael Tomoya Michita
- Immunogenetics Laboratory, Department of Genetics, Biosciences Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Valéria de Lima Kaminski
- Immunogenetics Laboratory, Department of Genetics, Biosciences Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - José Artur Bogo Chies
- Immunogenetics Laboratory, Department of Genetics, Biosciences Institute, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
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Matos AR, Martins JSCC, Oliveira MDLA, Garcia CC, Siqueira MM. Human CCR5Δ32 (rs333) polymorphism has no influence on severity and mortality of influenza A(H1N1)pdm09 infection in Brazilian patients from the post pandemic period. INFECTION GENETICS AND EVOLUTION 2018; 67:55-59. [PMID: 30389547 DOI: 10.1016/j.meegid.2018.10.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 10/12/2018] [Accepted: 10/29/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Influenza is an acute and highly contagious viral respiratory infection that causes significant morbidity and mortality. The identification of host genetic factors associated with susceptibility and severity of influenza virus infection is of paramount importance. Previous studies evaluating the potential involvement of the CCR5Δ32 polymorphism (rs333), a 32 base pair deletion in CC motif chemokine receptor 5 (CCR5) gene, in severity and mortality of influenza A(H1N1)pdm09 infected individuals have been reported, but their results are quite conflicting. OBJECTIVES The aim of this study was the evaluation of the CCR5Δ32 frequency in individuals with mild, severe and fatal influenza A(H1N1)pdm09 infection and its putative association with clinical and epidemiologic data. PATIENTS/METHODS A total of 432 individuals were included in this study and classified according to their clinical status, into the following groups: influenza like illness (ILI) (n = 153); severe acute respiratory infection (SARI) (n = 173) and fatal (n = 106) cases. The samples were collected in the post pandemic period, from 2012 to 2018. Individuals were further stratified according to their clinical and epidemiological data. The CCR5Δ32 variant was genotyped by PCR amplification and a subset of samples was further submitted to Sanger sequencing. RESULTS The different clinical groups (ILI, SARI and fatal) presented similar distribution of wt/wt and wt/Δ32 genotypes and CCR5Δ32 allele frequencies. Genotype Δ32/Δ32 was not detected in our study. Additionally, no association between wt/wt and wt/Δ32 genotypes and dyspnea, a clinical factor for influenza complications was found. Similarly, no significant differences in the distribution of wt/wt and wt/Δ32 genotypes and CCR5Δ32 variant allele frequencies were observed in samples from the different Brazilian geographical regions. CONCLUSIONS The CCR5Δ32 variant does not influence the susceptibility to influenza A(H1N1)pdm09 severe disease or mortality in individuals from Brazil.
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Affiliation(s)
- Aline R Matos
- Laboratório de Vírus Respiratórios e do Sarampo, National Influenza Center (NIC)/World Health Organization (WHO), Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil.
| | - Jéssica S C C Martins
- Laboratório de Vírus Respiratórios e do Sarampo, National Influenza Center (NIC)/World Health Organization (WHO), Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
| | - Maria de Lourdes A Oliveira
- Laboratório de Desenvolvimento Tecnológico em Virologia, Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
| | - Cristiana C Garcia
- Laboratório de Vírus Respiratórios e do Sarampo, National Influenza Center (NIC)/World Health Organization (WHO), Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
| | - Marilda M Siqueira
- Laboratório de Vírus Respiratórios e do Sarampo, National Influenza Center (NIC)/World Health Organization (WHO), Instituto Oswaldo Cruz/Fiocruz, Rio de Janeiro, Brazil
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Nerys-Junior A, Braga-Dias LP, Pezzuto P, Cotta-de-Almeida V, Tanuri A. Comparison of the editing patterns and editing efficiencies of TALEN and CRISPR-Cas9 when targeting the human CCR5 gene. Genet Mol Biol 2018; 41:167-179. [PMID: 29583154 PMCID: PMC5901495 DOI: 10.1590/1678-4685-gmb-2017-0065] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/07/2017] [Indexed: 01/02/2023] Open
Abstract
The human C-C chemokine receptor type-5 (CCR5) is the major transmembrane
co-receptor that mediates HIV-1 entry into target CD4+ cells. Gene therapy to
knock-out the CCR5 gene has shown encouraging results in providing a functional
cure for HIV-1 infection. In gene therapy strategies, the initial region of the
CCR5 gene is a hotspot for producing functional gene knock-out. Such target gene
editing can be done using programmable endonucleases such as transcription
activator-like effector nucleases (TALEN) or clustered regularly interspaced
short palindromic repeats (CRISPR-Cas9). These two gene editing approaches are
the most modern and effective tools for precise gene modification. However,
little is known of potential differences in the efficiencies of TALEN and
CRISPR-Cas9 for editing the beginning of the CCR5 gene. To examine which of
these two methods is best for gene therapy, we compared the patterns and amount
of editing at the beginning of the CCR5 gene using TALEN and CRISPR-Cas9
followed by DNA sequencing. This comparison revealed that CRISPR-Cas9 mediated
the sorting of cells that contained 4.8 times more gene editing than TALEN+
transfected cells.
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Affiliation(s)
- Arildo Nerys-Junior
- Laboratório de Virologia Molecular, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | - Luciene P Braga-Dias
- Laboratório do Serviço de Biotecnologia e Desenvolvimento Animal, Instituto de Ciência e Tecnologia em Biomodelos, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brazil
| | - Paula Pezzuto
- Laboratório de Virologia Molecular, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
| | | | - Amilcar Tanuri
- Laboratório de Virologia Molecular, Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil
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Silva-Carvalho WHV, de Moura RR, Coelho AVC, Crovella S, Guimarães RL. Frequency of the CCR5-delta32 allele in Brazilian populations: A systematic literature review and meta-analysis. INFECTION GENETICS AND EVOLUTION 2016; 43:101-7. [PMID: 27208805 DOI: 10.1016/j.meegid.2016.05.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 05/13/2016] [Accepted: 05/16/2016] [Indexed: 11/29/2022]
Abstract
The CCR5 is a chemokine receptor widely expressed by several immune cells that are engaged in inflammatory responses. Some populations have individuals exhibiting a 32bp deletion in the CCR5 gene (CCR5-delta32) that produces a truncated non-functional protein not expressed on the cell surface. This polymorphism, known to be associated with susceptibility to infectious and inflammatory diseases, such as osteomyelitis, pre-eclampsia, systemic lupus erythematous, juvenile idiopathic arthritis, rheumatoid arthritis and HIV/AIDS, is more commonly found in European populations with average frequency of 10%. However, it is also possible to observe a significant frequency in other world populations, such as the Brazilian one. We performed a systematic review and meta-analysis of CCR5-delta32 genetic association studies in Brazilian populations throughout the country to estimate the frequency of this polymorphism. We also compared CCR5-delta32 frequencies across Brazilian regions. The systematic literature reviewed studies involving delta32 allele in Brazilian populations published from 1995 to 2015. Among the reviewed literature, 25 studies including 30 Brazilian populations distributed between the North, Northeast, South and Southeast regions were included in our meta-analysis. We observed an overall allelic frequency of 4% (95%-CI, 0.03-0.05), that was considered moderate and, notably, higher than some European populations, such as Cyprus (2.8%), Italy (3%) and Greece (2.4%). Regarding the regional frequency comparisons between North-Northeast (N-NE) and South-Southeast (S-SE) regions, we observed an allelic frequency of 3% (95%-CI, 0.02-0.04) and 4% (95%-CI, 0.03-0.05), respectively. The populations from S-SE regions had a slightly higher CCR5-delta32 frequency than N-NE regions (OR=1.41, p=0.002). Although there are several studies about the CCR5-delta32 polymorphism and its effect on the immune response of some infectious diseases, this report is the first meta-analysis study that provides a descriptive study of the distribution of CCR5-delta32 allele in Brazilian population.
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Affiliation(s)
| | - Ronald Rodrigues de Moura
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil; Department of Genetics, Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil
| | - Antonio Victor Campos Coelho
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil; Department of Genetics, Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil
| | - Sergio Crovella
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil; Department of Genetics, Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil
| | - Rafael Lima Guimarães
- Laboratory of Immunopathology Keizo Asami (LIKA), Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil; Department of Genetics, Federal University of Pernambuco - UFPE, Recife, Pernambuco, Brazil
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