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Genetic Variants Associated with Chronic Obstructive Pulmonary Disease Risk: Cumulative Epidemiological Evidence from Meta-Analyses and Genome-Wide Association Studies. Can Respir J 2022; 2022:3982335. [PMID: 35721789 PMCID: PMC9203202 DOI: 10.1155/2022/3982335] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 05/26/2022] [Indexed: 12/03/2022] Open
Abstract
Background Last two decades, many association studies on genetic variants and chronic obstructive pulmonary disease (COPD) risk have been published. But results from different studies are inconsistent. Therefore, we performed this article to systematically evaluate results from previous meta-analyses and genome-wide association studies (GWASs). Material and Methods. Firstly, we retrieved meta-analyses in PubMed, Embase, and China National Knowledge Infrastructure and GWASs in PubMed and GWAS catalog on or before April 7th, 2022. Then, data were extracted and screened. Finally, two main methods—Venice criteria and false-positive report probability test—were used to evaluate significant associations. Results As a result, eighty-eight meta-analyses and 5 GWASs were deemed eligible for inclusion. Fifty variants in 26 genes obtained from meta-analyses were significantly associated with COPD risk. Cumulative epidemiological evidence of an association was graded as strong for 10 variants in 8 genes (GSTM1, CHRNA, ADAM33, SP-D, TNF-α, VDBP, HMOX1, and HHIP), moderate for 6 variants in 5 genes (PI, GSTM1, ADAM33, TNF-α, and VDBP), and weak for 40 variants in 23 genes. Five variants in 4 genes showed convincing evidence of no association with COPD risk in meta-analyses. Additionally, 29 SNPs identified in GWASs were proved to be noteworthy based on the FPRP test. Conclusion In summary, more than half (52.38%) of genetic variants reported in previous meta-analyses showed no association with COPD risk. However, 13 variants in 9 genes had moderate to strong evidence for an association. This article can serve as a useful reference for further studies.
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Matuszyk A, Ceranowicz P, Warzecha Z, Cieszkowski J, Gałązka K, Bonior J, Jaworek J, Konturek PC, Gil K, Dembiński A. Pretreatment with obestatin inhibits the development of acetic acid-induced colitis in rats. Arch Med Sci 2018; 14:920-929. [PMID: 30002711 PMCID: PMC6040133 DOI: 10.5114/aoms.2016.58749] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 01/22/2016] [Indexed: 12/28/2022] Open
Abstract
INTRODUCTION Obestatin is a 23-amino acid peptide derived from proghrelin, a common prohormone for ghrelin and obestatin. Previous studies have shown that obestatin exhibits some protective and therapeutic effects in the pancreas and stomach. The aim of this study was to examine the effect of pretreatment with obestatin on the development of acetic acid-induced colitis. MATERIAL AND METHODS Studies were performed on Wistar rats. Before induction of colitis, rats were treated intraperitoneally with saline or obestatin, administered twice at a dose of 4, 8 or 16 nmol/kg/dose. The first dose of saline or obestatin was administered 8 h before the induction of colitis, the second one 7 h after the first dose. Colitis was induced by enema with 1 ml of 4% acetic acid solution. The severity of colitis was assessed 1 or 24 h after administration of enema. RESULTS Pretreatment with obestatin administered at a dose of 8 or 16 nmol/kg/dose significantly reduced the area of mucosal damage evoked by enema with acetic acid (p < 0.05). This effect was accompanied by an improvement of mucosal blood flow and DNA synthesis in the colon. Moreover, obestatin administered at a dose of 8 or 16 nmol/kg/dose significantly reduced mucosal concentration of IL-1β and activity of myeloperoxidase (p < 0.05). CONCLUSIONS Pretreatment with obestatin exhibited a protective effect in the colon, leading to a reduction of colonic damage in acetic acid-induced colitis. This effect was associated with an improvement of mucosal blood flow, an increase in mucosal cell proliferation, and a decrease in local inflammation.
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Affiliation(s)
- Aleksandra Matuszyk
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
- Department of Anatomy, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Piotr Ceranowicz
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Zygmunt Warzecha
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Jakub Cieszkowski
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Krystyna Gałązka
- Department of Pathomorphology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Joanna Bonior
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Jolanta Jaworek
- Department of Medical Physiology, Faculty of Health Sciences, Jagiellonian University Medical College, Krakow, Poland
| | - Peter Christopher Konturek
- Department of Internal Medicine II, Thuringia-Clinic Saalfeld, Teaching Hospital of the University of Jena, Saalfeld, Germany
| | - Krzysztof Gil
- Department of Pathophysiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
| | - Artur Dembiński
- Department of Physiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow, Poland
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Mi YY, Chen YZ, Chen J, Zhang LF, Zuo L, Zou JG. Updated analysis of vitamin D receptor gene FokI polymorphism and prostate cancer susceptibility. Arch Med Sci 2017; 13:1449-1458. [PMID: 29181077 PMCID: PMC5701687 DOI: 10.5114/aoms.2016.61793] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 11/03/2015] [Indexed: 01/28/2023] Open
Abstract
INTRODUCTION Polymorphisms of the vitamin D receptor (VDR) gene have been investigated in various case-control studies to evaluate prostate cancer susceptibility; however, published data on the association between vitamin D receptor gene FokI polymorphism and prostate cancer risk are inconclusive. MATERIAL AND METHODS To assess the impact of vitamin D receptor gene FokI polymorphism, we performed a meta-analysis of eligible studies including 9,720 patients and 9,710 control subjects. RESULTS The overall results indicated no obvious association of this variant on prostate cancer risk. However, in subgroup analysis by ethnicity, positive associations existed in Caucasian descendents for allelic contrast (OR = 1.03, 95% CI: 1.00-1.06, pheterogeneity = 0.552, p = 0.026) and the dominant genetic model (OR = 1.03, 95% CI: 1.00-1.05, pheterogeneity = 0.856, p = 0.032). In the subgroup analysis by tumor stage, there was a significant association between this variant and advanced prostate cancer under the recessive genetic model (OR = 1.15, 95% CI: 1.01-1.32, pheterogeneity = 0.469, p = 0.032). In the subgroup analysis by source of control, association of the VDR FokI polymorphism and prostate cancer susceptibility was also found in population-based studies under homozygote comparison and the recessive genetic model. CONCLUSIONS The VDR FokI polymorphism may contribute to the risk of developing prostate cancer in Caucasian and population-based studies. Further large, well-designed studies are warranted to confirm this conclusion in more detail.
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Affiliation(s)
- Yuan-Yuan Mi
- Department of Urology, Third Affiliated Hospital of Nantong University, Wuxi, China
| | - Yang-Zhi Chen
- Department of Urology, Changzhou No. 2 People’s Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Jing Chen
- Department of Urology, Changzhou No. 2 People’s Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Li-Feng Zhang
- Department of Urology, Changzhou No. 2 People’s Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Li Zuo
- Department of Urology, Changzhou No. 2 People’s Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
| | - Jian-Gang Zou
- Department of Urology, Changzhou No. 2 People’s Hospital Affiliated to Nanjing Medical University, Changzhou, Jiangsu Province, China
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Liu K, Du J, Ruan L. MicroRNA-21 regulates the viability and apoptosis of diffuse large B-cell lymphoma cells by upregulating B cell lymphoma-2. Exp Ther Med 2017; 14:4489-4496. [PMID: 29067124 DOI: 10.3892/etm.2017.5021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Accepted: 12/19/2016] [Indexed: 12/31/2022] Open
Abstract
Diffuse large B-cell lymphoma (DLBCL), one of the most frequently diagnosed non-Hodgkin lymphoma (NHL), is partly attributed to hereditary factors. MicroRNA-21 (miR-21) is an oncogenic substance that induces NHL and primarily targets tumor-suppressive molecules, such as B cell lymphoma-2 (Bcl-2). The present study explored whether Bcl-2, targeted by miR-21, would affect the development of NHL. Specimens were harvested from 55 patients with DLBCL who had undergone surgical treatment. Expression levels of miR-21 and Bcl-2 were evaluated through reverse transcription-quantitative polymerase chain reaction, immunohistochemistry and western blotting. Luciferase-reporter assays were performed to investigate the potential association between miR-21 and Bcl-2. MTT assays, flow cytometric analysis and caspase-3 activity assays were used to evaluate cell viability and apoptosis of DLBCL cells, respectively. Furthermore, statistical analysis was conducted using SPSS 19.0 software and the expression levels of miR-21 and Bcl-2 within DLBCL tissues were significantly upregulated when compared to those in normal tissues (P<0.01). As predicted by TargetScan, perfect base pairing was observed between the seed sequence of mature miR-21 and the 3' untranslated region of Bcl-2 mRNA. Dual luciferase reporter gene assays also revealed that miR-21 significantly facilitated the luciferase activity of Bcl-2 wild-type, with 61% upregulation (P<0.01) observed. MTT assays demonstrated that the viability of OCI-LY3 cells was decreased when cells were transfected with miR-21 inhibitor or Bcl-2 small interfering RNA and compared with those of control and negative control groups (all P<0.05). The apoptosis rate and caspase-3 activity level of the miR-21 group were 2.73±0.48 and 0.47±0.05, respectively, which were both significantly different from the groups with lower levels of miR-21 expression levels (all P<0.01). Since miR-21 may contribute to increased viability and decreased apoptosis of DLBCL cells through targeting Bcl-2, both Bcl-2 and miR-21 are likely to serve as effective targets for developing novel DLBCL treatments in the future.
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Affiliation(s)
- Ke Liu
- Department of Hematology, The First Affiliated Hospital and College of Clinical Medicine, Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| | - Jingxia Du
- Department of Pharmacology, Medical College, Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| | - Linhai Ruan
- Department of Hematology, The First Affiliated Hospital and College of Clinical Medicine, Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
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Bose S, Rivera-Mariani F, Chen R, Williams D, Belli A, Aloe C, McCormack MC, Breysse PN, Hansel NN. Domestic exposure to endotoxin and respiratory morbidity in former smokers with COPD. INDOOR AIR 2016; 26:734-42. [PMID: 26547489 PMCID: PMC5324735 DOI: 10.1111/ina.12264] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2015] [Accepted: 10/31/2015] [Indexed: 05/28/2023]
Abstract
Indoor air pollution has been linked to adverse chronic obstructive pulmonary disease (COPD) health, but specific causative agents have not yet been identified. We evaluated the role of indoor endotoxin exposure upon respiratory health in former smokers with COPD. Eighty-four adults with moderate to severe COPD were followed longitudinally and indoor air and dust samples collected at baseline, 3 and 6 months. Respiratory outcomes were repeatedly assessed at each time point. The associations between endotoxin exposure in air and settled dust and health outcomes were explored using generalizing estimating equations in multivariate models accounting for confounders. Dust endotoxin concentrations in the main living area were highest in spring and lowest in fall, while airborne endotoxins remained steady across seasons. Airborne and dust endotoxin concentrations were weakly correlated with one another (rs = +0.24, P = 0.005). Endotoxin concentrations were not significantly associated with respiratory symptoms, rescue medication use, quality of life, or severe exacerbations. In vitro whole-blood assays of the pro-inflammatory capacity of PM10 filters with and without endotoxin depletion demonstrated that the endotoxin component of indoor air pollution was not the primary trigger for interleukin-1β release. Our findings support that endotoxin is not the major driver in the adverse effects of indoor PM upon COPD morbidity.
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Affiliation(s)
- S Bose
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA.
| | - F Rivera-Mariani
- Department of Biology, Miami Dade College Wolfson Campus, Miami, FL, USA
| | - R Chen
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - D Williams
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - A Belli
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - C Aloe
- Division of Pediatric Allergy and Immunology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - M C McCormack
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - P N Breysse
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
| | - N N Hansel
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University, Baltimore, MD, USA
- Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, USA
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Mlak R, Homa-Mlak I, Powrózek T, Mackiewicz B, Michnar M, Krawczyk P, Dziedzic M, Rubinsztajn R, Chazan R, Milanowski J, Małecka-Massalska T. Impact of I/D polymorphism of ACE gene on risk of development and course of chronic obstructive pulmonary disease. Arch Med Sci 2016; 12:279-87. [PMID: 27186170 PMCID: PMC4848351 DOI: 10.5114/aoms.2015.50757] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Accepted: 09/10/2014] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Chronic obstructive pulmonary disease (COPD) affects more than 10% of the world's population over 40 years of age. The main exogenous risk factor is cigarette smoking; however, only 20% of smokers develop COPD, indicating that some other factors, e.g. genetic, may play an important role in the disease pathogenesis. Recent research indicates that ACE (angiotensin-converting enzyme) may be a susceptibility gene for asthma or COPD. The aim of our study was to determine the influence of I/D (insertion/deletion) polymorphism of the ACE gene (AluYa5, rs4646994) on the risk and course of COPD. MATERIAL AND METHODS We investigated ACE I/D polymorphism in 206 COPD and 165 healthy Caucasian subjects. RESULTS In the generalized linear model (GLZ) analysis of the influence of selected factors on presence of COPD we found a significant independent effect for male sex (repeatedly increases the risk of COPD, OR = 7.7, p = 0.049), as well as smoking or lower body mass index, but only in combination with older age (OR = 0.96, p = 0.003 and OR = 1.005, p = 0.04 respectively). Interestingly, analysis of factors which may influence the risk of a higher number of exacerbations demonstrated that occurrence of DD genotype, but only in men, is associated with a lower risk (OR = 0.7, p = 0.03) of this complication. CONCLUSIONS We suggest that ACE may not be a susceptibility gene for the origin of COPD but a disease-modifying gene. Since the impact of I/D polymorphism of the ACE gene on COPD risk is moderate or negligible, other molecular changes, that will help predict the development of this disease, should still be sought.
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Affiliation(s)
- Radosław Mlak
- Department of Human Physiology, Medical University of Lublin, Lublin, Poland
- Department of Oncology, Medical University of Lublin, Lublin, Poland
| | - Iwona Homa-Mlak
- Department of Human Physiology, Medical University of Lublin, Lublin, Poland
- Department of Oncology, Medical University of Lublin, Lublin, Poland
| | - Tomasz Powrózek
- Department of Oncology, Medical University of Lublin, Lublin, Poland
| | | | - Marek Michnar
- Department of Oncology, Medical University of Lublin, Lublin, Poland
| | - Paweł Krawczyk
- Department of Oncology, Medical University of Lublin, Lublin, Poland
| | - Marcin Dziedzic
- Department of Laboratory Diagnostics, Medical University of Lublin, Lublin, Poland
| | - Renata Rubinsztajn
- Department of Internal Medicine, Pulmonology and Allergology, Medical University of Warsaw, Warsaw, Poland
| | - Ryszarda Chazan
- Department of Internal Medicine, Pulmonology and Allergology, Medical University of Warsaw, Warsaw, Poland
| | - Janusz Milanowski
- Department of Oncology, Medical University of Lublin, Lublin, Poland
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Ma L, Chu WM, Zhu J, Wu YN, Wang ZL. Interleukin-1β (3953/4) C→T polymorphism increases the risk of chronic periodontitis in Asians: evidence from a meta-analysis of 20 case-control studies. Arch Med Sci 2015; 11:267-73. [PMID: 25995740 PMCID: PMC4424246 DOI: 10.5114/aoms.2015.50961] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2014] [Revised: 06/02/2014] [Accepted: 06/12/2014] [Indexed: 12/02/2022] Open
Abstract
INTRODUCTION To investigate the association of the interleukin-1β (IL-1β) (3953/4) C→T polymorphism with chronic periodontitis (CP) in Asians. MATERIAL AND METHODS Systematic searches of electronic databases and hand searching of references were performed, including PubMed, Embase, the Cochrane Library, and the Chinese National Knowledge Infrastructure (CNKI). Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of the associations. Publication bias was tested by Egger's test. Sensitivity analysis was conducted by limiting the meta-analysis studies conforming to Hardy-Weinberg equilibrium (HWE). Data analyses were carried out using RevMan 6.0. RESULTS A meta-analysis was performed on 20 published case-control studies, including 1,656 CP cases and 1,498 healthy controls. The pooled OR was 1.60 (95% CI = 1.02-2.52, p = 0.04) for the T allele carriers (TT + CT) compared with CC and 1.60 (95% CI = 1.06-2.42, p = 0.02) for T vs. C. Subgroup analysis by country revealed significant risks of CP among Indians carrying the T allele (TT vs. CC: OR = 3.88, 95% CI = 1.77-8.50, p = 0.0007). CONCLUSIONS The analysis showed that IL-1β (3953/4) C→T polymorphism probably increases the risk of CP in Asians, and the IL-1β+3954 TT genotype may be associated with a strongly increased risk of CP in Indians, but not in Chinese.
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Affiliation(s)
- Lu Ma
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei-Ming Chu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiang Zhu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yu-Nong Wu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, China
- Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zi-Lu Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, China
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