1
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Pal R, Dutta S. Association Study of Transforming Growth Factor Beta 1 + 29 T/C exon 1 Polymorphism in Breast Cancer Patients from North Indian Population. Appl Biochem Biotechnol 2023; 195:3671-3680. [PMID: 36951937 DOI: 10.1007/s12010-023-04438-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/15/2023] [Indexed: 03/24/2023]
Abstract
BACKGROUND TGFB1 cytokine is involved in normal mammary epithelial development as well as in breast tumorigenesis. It has role in both breast tumor suppression and progression. TGFB1 gene has several single nucleotide polymorphisms (SNPs) many of which modulate the activity of TGFB1. Our aim in this study was to analyze TGFB1 + 29 polymorphism in breast cancer individuals from North Indian population. METHODS TGFB1 + 29 T/C polymorphism was analyzed using Sanger sequencing in 285 breast cancer patients and age matched 363 healthy controls from North Indian population. Next, transcript expression of 13 apoptotic genes, TRAIL, DR4, DR5, DcR1, DcR2, Bcl2, cytochrome c, Casp8L, Casp8, FlipS, FlipL, Casp3s and Casp3 were carried out in 77 breast tumor tissues obtained from 77 individuals. RESULTS TGFB1 + 29 CC genotype provided protection against the development of breast cancer (P = 0.012). This was mainly attributable to higher age group (> 45 years) women (P = 0.016). Individuals having CC protector genotype showed significantly higher expression of TGFB1 transcript compared to the TT and TC risk genotypes (P = 0.044). Furthermore, we observed that TGFB1 + 29 CC genotype showed increased TRAIL mediated apoptosis via the extrinsic pathway in breast tumor patients with age greater than 45 years (P = 0.027). CONCLUSION TGFB1 + 29 homozygous mutant CC genotype is related to protection against breast cancer in North Indian women population greater than 45 years of age.
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Affiliation(s)
- Ranjana Pal
- Department of Life Sciences, Presidency University, 86/1 College Street, Kolkata, West Bengal, 700073, India.
- Department of Life Sciences, Jawaharlal Nehru University, New Delhi, India.
| | - Siddhartha Dutta
- Department of Life Sciences, Jawaharlal Nehru University, New Delhi, India
- Department of Biotechnology, University of Engineering and Management, Kolkata, West Bengal, India
- Department of Microbiology and Biotechnology, Sister Nivedita University, Kolkata, West Bengal, India
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Badshah Y, Shabbir M, Khan K, Fatima M, Majoka I, Aslam L, Munawar H. Manipulation of Interleukin-6 (IL-6) and Transforming Growth Factor Beta-1(TGFβ-1) towards viral induced liver cancer pathogenesis. PLoS One 2022; 17:e0275834. [PMID: 36215278 PMCID: PMC9550071 DOI: 10.1371/journal.pone.0275834] [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: 11/29/2021] [Accepted: 09/22/2022] [Indexed: 11/23/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is the most common liver malignancy. Early diagnosis of HCC has always been challenging. This study aims to assess the pathogenicity and the prevalence of IL-6 -174G/C (rs1800795) and TGFβ-1 +29C/T (rs1800470) polymorphisms in HCV-infected HCC patients. Experimental strategies are integrated with computational approaches to analyse the pathogenicity of the TGFβ-1 +29C/T and IL-6-174 G/C polymorphisms in HCV-induced HCC. AliBaba2 was used to predict the effect of IL-6-174 G/C on transcription factor binding site in IL-6 gene. Structural changes in the mutant TGFβ-1 structure were determined through project HOPE. To assess the polymorphic prevalence of IL-6 -174G/C and TGFβ-1 +29C/T genotypes in HCC and control subjects, amplification refractory mutation system PCR (ARMS-PCR) was performed on 213 HCC and 216 control samples. GraphPad Prism version 8.0 was used for the statistical analysis of the results. In-silico analysis revealed the regulatory nature of both IL-6 -174G/C and TGFβ-1 +29C/T polymorphisms. ARMS-PCR results revealed that the individuals carrying TT genotype for TGFβ-1 gene have an increased risk of developing HCC (p<0.0001, OR = 5.403, RR = 2.062) as compared to individuals with CT and CC genotype. Similarly, GC genotype carriers for IL-6 gene exhibit an increased risk of HCC susceptibility (p<0.0001, OR = 2.276, RR = 1.512) as compared to the people carrying the GG genotype. Genotype TT of TGFβ-1 gene and genotype GC of IL-6 gene are found to be associated with HCV-induced HCC. IL-6 polymorphism may alter its transcription that leads to its pathogenicity. TGFβ-1 polymorphism may alter protein structure stability.
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Affiliation(s)
- Yasmin Badshah
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Maria Shabbir
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Khushbukhat Khan
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Maha Fatima
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Iqra Majoka
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Laiba Aslam
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
| | - Huda Munawar
- Department of Healthcare Biotechnology, Atta-ur-Rahman School of Applied Biosciences, National University of Sciences and Technology, Islamabad, Pakistan
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Ahmed F, Adnan M, Malik A, Tariq S, Kamal F, Ijaz B. Perception of breast cancer risk factors: Dysregulation of TGF-β/miRNA axis in Pakistani females. PLoS One 2021; 16:e0255243. [PMID: 34297787 PMCID: PMC8301651 DOI: 10.1371/journal.pone.0255243] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/12/2021] [Indexed: 01/10/2023] Open
Abstract
Breast cancer poses a serious health risk for women throughout the world. Among the Asian population, Pakistani women have the highest risk of developing breast cancer. One out of nine women is diagnosed with breast cancer in Pakistan. The etiology and the risk factor leading to breast cancer are largely unknown. In the current study the risk factors that are most pertinent to the Pakistani population, the etiology, molecular mechanisms of tumor progression, and therapeutic targets of breast cancer are studied. A correlative, cross-sectional, descriptive, and questionnaire-based study was designed to predict the risk factors in breast cancer patients. Invasive Ductal Carcinoma (90%) and grade-II tumor (73.2%) formation are more common in our patient’s data set. Clinical parameters such as mean age of 47.5 years (SD ± 11.17), disturbed menstrual cycle (> 2), cousin marriages (repeated), and lactation period (< 0.5 Y) along with stress, dietary and environmental factors have an essential role in the development of breast cancer. In addition to this in silico analysis was performed to screen the miRNA regulating the TGF-beta pathway using TargetScanHuman, and correlation was depicted through Mindjet Manager. The information thus obtained was observed in breast cancer clinical samples both in peripheral blood mononuclear cells, and biopsy through quantitative real-time PCR. There was a significant dysregulation (**P>0.001) of the TGF-β1 signaling pathway and the miRNAs (miR-29a, miR-140, and miR-148a) in patients’ biopsy in grade and stage specifically, correlated with expression in blood samples. miRNAs (miR-29a and miR-140, miR-148a) can be an effective diagnostic and prognostic marker as they regulate SMAD4 and SMAD2 expression respectively in breast cancer blood and biopsy samples. Therefore, proactive therapeutic strategies can be devised considering negatively regulated cascade genes and amalgamated miRNAs to control breast cancer better.
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Affiliation(s)
- Fayyaz Ahmed
- Laboratory of Applied and Functional Genomics, National Center of Excellence in Molecular Biology, University of the Punjab Lahore, Lahore, Pakistan
| | - Muhammad Adnan
- Laboratory of Applied and Functional Genomics, National Center of Excellence in Molecular Biology, University of the Punjab Lahore, Lahore, Pakistan
| | - Ayesha Malik
- Laboratory of Applied and Functional Genomics, National Center of Excellence in Molecular Biology, University of the Punjab Lahore, Lahore, Pakistan
| | - Somayya Tariq
- Laboratory of Applied and Functional Genomics, National Center of Excellence in Molecular Biology, University of the Punjab Lahore, Lahore, Pakistan
| | - Farukh Kamal
- Department of Pathology, Fatima Jinnah Medical University, Lahore, Pakistan
| | - Bushra Ijaz
- Laboratory of Applied and Functional Genomics, National Center of Excellence in Molecular Biology, University of the Punjab Lahore, Lahore, Pakistan
- * E-mail:
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4
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Sengupta D, Banerjee S, Mukhopadhyay P, Guha U, Ganguly K, Bhattacharjee S, Sengupta M. A meta-analysis and in silico analysis of polymorphic variants conferring breast cancer risk in the Indian subcontinent. Future Oncol 2020; 16:2121-2142. [PMID: 32744066 DOI: 10.2217/fon-2020-0333] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Background: Genetic association studies on breast cancer on the Indian subcontinent have yielded conflicting results, and the precise effect of these variants on breast cancer pathogenesis is not known. Methods: Genomic variants, as obtained from selected studies from the Indian subcontinent, were subjected to random-effects and fixed-effect meta-analysis. Functional annotation of the relevant variants was done through a tried and tested in silico pipeline. Results: We found rs4646903/CYP1A1, rs1799814/CYP1A1, rs61886492/GCPII, del2/GSTM1, rs4680/COMT and rs1801394/MTRR to be associated with breast cancer. The del2/GSTM1 holds the association in premenopausal women. Conclusions: This is the first study of its kind from the Indian subcontinent analysing the extent of association of variants across populations followed by their functional annotation in the disease pathway.
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Affiliation(s)
- Debmalya Sengupta
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Souradeep Banerjee
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Pramiti Mukhopadhyay
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Udayan Guha
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Kausik Ganguly
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
| | - Samsiddhi Bhattacharjee
- National Institute of Biomedical Genomics, Near Netaji Subhas Sanatorium Post Office, Kalyani, West Bengal 741251, India
| | - Mainak Sengupta
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata 700019, India
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Youn HJ, Han W. A Review of the Epidemiology of Breast Cancer in Asia: Focus on Risk Factors. Asian Pac J Cancer Prev 2020; 21:867-880. [PMID: 32334446 PMCID: PMC7445974 DOI: 10.31557/apjcp.2020.21.4.867] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Indexed: 01/11/2023] Open
Abstract
Background and Aim: Breast cancer is the most prevalent cancer in women. To date, regional differences in breast cancer risk factors have not been identified. The aim of our review was to gain a better understanding of the role of risk factors in women with breast cancer in Asia. Methods: We conducted a PubMed search on 15 March 2016, for journal articles published in English between 2011 and 2016, which reported data for human subjects in Asia with a diagnosis of breast cancer. Search terms included breast neoplasm, epidemiology, Asia, prevalence, incidence, risk and cost of illness. Studies of any design were included, except for review articles and meta-analyses, which were excluded to avoid duplication of data. No exclusions were made based on breast cancer treatment. We reported the results using the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. Results: A total of 776 abstracts were retrieved. After screening against the eligibility criteria, 562 abstracts were excluded. The remaining 214 abstracts, which were published between 2013 and 2015, were included in this review. Results were summarized and reported under three categories: incidence, prevalence or outcomes for breast cancer in Asia; modifiable risk factors; and non-modifiable risk factors. We found that the increased risk of breast cancer among participants from Asia was associated with older age, family history of breast cancer, early menarche, late menopause, high body mass index, being obese or overweight, exposure to tobacco smoke, and high dietary intake of fats or fatty foods. In contrast, intake of dietary fruits, vegetables, and plant- and soy-based products was associated with a decreased breast cancer risk. While based on limited data, when compared to women from the United States, women from Asia had a decreased risk of breast cancer. Conclusions: This review of 214 abstracts of studies in Asia, published between 2013 and 2015, confirmed the relevance of known non-modifiable and modifiable risk factors for women with breast cancer.
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Affiliation(s)
- Hyun Jo Youn
- Department of Surgery, Research Institute of Clinical Medicine, Chonbuk National University and Biomedical Research Institute, Chonbuk National University Hospital, Republic of Korea
| | - Wonshik Han
- Department of Surgery and Cancer Research Institute, Seoul National University College of Medicine, Seoul National University Cancer Hospital, Republic of Korea
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6
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Avazpour N, Hajjari M, Kazemi Nezhad SR, Tahmasebi Birgani M. SNHG1 Long Noncoding RNA is Potentially Up-Regulated in Colorectal Adenocarcinoma. Asian Pac J Cancer Prev 2020; 21:897-901. [PMID: 32334448 DOI: 10.31557/apjcp.2020.21.4.897] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Indexed: 01/13/2023] Open
Abstract
Colorectal cancer (CRC) is one of the most common types of cancer worldwide. However, the molecular mechanisms involved in CRC initiation and progression is remained to be unknown. It seems that lncRNAs, as the main and lengthy functional transcripts of the genome, have important roles in different cancers such as CRC. CRC-related lncRNAs are reported to be involved in diverse molecular processes such as metastasis, invasion, cell proliferation, and apoptosis. This study was aimed to analyse the expression level of lncRNA SNHG1 in colorectal adenocarcinoma and normal tissues. We performed an in silico analysis on a large cohort and confirmed the results by experimental analysis of clinical samples through real-time PCR. Our findings demonstrated that that SNHG1 is potentially overexpressed in tumor tissues compared with adjacent normal tissues. The expression level of SNHG1 was shown to be potentially associated with clinicopathological features of tumors. The current study suggests the potential role of SNHG1 in colon cancer progression.
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Affiliation(s)
- Niloofar Avazpour
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Mohamadreza Hajjari
- Department of Genetics, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | | | - Maryam Tahmasebi Birgani
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Association of TGF-β1 Polymorphisms with Breast Cancer Risk: A Meta-Analysis of Case-Control Studies †. Cancers (Basel) 2020; 12:cancers12020471. [PMID: 32085560 PMCID: PMC7072663 DOI: 10.3390/cancers12020471] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 02/10/2020] [Accepted: 02/11/2020] [Indexed: 01/11/2023] Open
Abstract
Reports on the association of TGF-β1 polymorphisms with breast cancer (BC) have been conflicting, inconsistent, inconclusive, and controversial. PubMed, EMBASE, and Google Scholar were used to identify studies on TGF-β1 polymorphisms and BC risk. Data were extracted independently, and of the initial 3043 studies, 39 case-control studies were eligible for inclusion in the meta-analysis. Information from these studies was extracted, and the overall associations of three TGF-β1 polymorphisms (TGF-β1 29>T/C, TGF-β1-509 C/T, and TGF-β1*6A) with BC risk were analyzed using overall allele, homozygous, heterozygous, recessive, and dominant models. None of the three TGF-β1 polymorphisms studied had a significant influence on the development of BC. However, stratified analysis revealed a positive correlation between the TGF-β1 29T>C polymorphism and BC risk according to a heterozygous model of the Asian population (odds ratio (OR) = 1.115, 95% confidence interval (CI) = 1.006–1.237, p = 0.039). Interestingly, this polymorphism was associated with lower odds of BC according to a heterozygous model of the Middle Eastern population (OR = 0.602, 95% CI = 0.375–0.966, p = 0.035). Thus, our analysis of large datasets indicates that the TGF-β1 29T>C polymorphism is significantly associated with BC risk in the Asian population. In contrast, the TGF-β1*6A and TGF-β1-509 C/T polymorphisms failed to show an association with BC.
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8
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Hadj-Ahmed M, Ghali RM, Bouaziz H, Habel A, Stayoussef M, Ayedi M, Hachiche M, Rahal K, Yacoubi-Loueslati B, Almawi WY. Transforming growth factor beta 1 polymorphisms and haplotypes associated with breast cancer susceptibility: A case-control study in Tunisian women. Tumour Biol 2019; 41:1010428319869096. [PMID: 31405342 DOI: 10.1177/1010428319869096] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Variable association of transforming growth factor beta 1 (TGFβ1) in breast cancer (BC) pathogenesis was documented, and the contribution of specific TGFB1 polymorphisms to the progression of BC and associated features remains poorly understood. We investigated the contribution of TGFB1 rs1800469, rs1800470, rs1800471, and rs1800472 variants and 4-locus TGFB1 haplotypes on BC susceptibility, and pathological presentation of BC subtypes. Study subjects comprised 430 female BC cases, and 498 cancer-free control women. BC-associated pathological parameters were also evaluated for correlation with TGFB1 variants. Results obtained showed that the minor allele frequency (MAF) of rs1800471 (+74G>C) was higher seen in BC cases than in control subjects, and was associated with increased risk of BC. Significant differences in rs1800471 and rs1800469 (-509C>T) genotype distribution were noted between BC cases and controls, which persisted after controlling for key covariates. TGFB1 rs1800472 was positively, while rs1800470 was negatively associated with triple negativity, while rs1800470 positively correlated with menarche, but negatively with tumor size and molecular type, and rs1800469 correlated positively with menstrual irregularity, distant metastasis, nodal status, and hormonotherapy. Heterogeneity in LD pattern was noted between the tested TGFB1 variants. Four-locus (rs1800472-rs1800471-rs1800470-rs1800469) Haploview analysis identified haplotype TGCT to be negatively associated, and haplotypes CGTT and CCCC to be positively associated with BC. This association of CGTT and CCCC, but not TGCT, with BC remained significant after controlling for key covariates. In conclusion, TGFB1 alleles and specific genotypes, and 4-locus TGFB1 haplotypes influence BC susceptibility, suggesting dual association imparted by specific SNP, consistent with dual role for TGFB1 in BC pathogenesis.
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Affiliation(s)
- Mariem Hadj-Ahmed
- 1 Laboratory of Mycology, Pathologies and Biomarkers, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Rabeb M Ghali
- 2 Faculty of Pharmacy of Monastir, University of Monastir, Monastir, Tunisia
| | - Hanen Bouaziz
- 3 Department of Carcinological Surgery, Salah Azaïz Institute, Tunis, Tunisia
| | - Azza Habel
- 1 Laboratory of Mycology, Pathologies and Biomarkers, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Mouna Stayoussef
- 1 Laboratory of Mycology, Pathologies and Biomarkers, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Mouna Ayedi
- 4 Department of Medical Oncology, Salah Azaïz Institute, Tunis, Tunisia
| | - Monia Hachiche
- 2 Faculty of Pharmacy of Monastir, University of Monastir, Monastir, Tunisia
| | - Khaled Rahal
- 2 Faculty of Pharmacy of Monastir, University of Monastir, Monastir, Tunisia
| | - Besma Yacoubi-Loueslati
- 1 Laboratory of Mycology, Pathologies and Biomarkers, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia
| | - Wassim Y Almawi
- 1 Laboratory of Mycology, Pathologies and Biomarkers, Faculty of Sciences of Tunis, University of Tunis El Manar, Tunis, Tunisia.,5 Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana, Kazakhstan
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Fu J, He HY, Ojha SC, Shi H, Sun CF, Deng CL, Sheng YJ. Association of IL-6, IL-10 and TGF-β1 gene polymorphisms with brucellosis: A systematic review with meta-analysis. Microb Pathog 2019; 135:103640. [PMID: 31344477 DOI: 10.1016/j.micpath.2019.103640] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 07/18/2019] [Accepted: 07/18/2019] [Indexed: 01/22/2023]
Abstract
BACKGROUND Brucellosis is one of the major public health problems worldwide. Several current studies have provided data that polymorphisms in the interleukin-6 (IL-6), interleukin-10 (IL-10) and transforming growth factor beta1(TGF-β1) gene were associated with the susceptibility to human brucellosis, but the results remain inconsistent. OBJECTIVES The aim of present study was to investigate the relationship between IL-6 (-174 G/C), IL-10 (-1082 A/G, -819C/T) and TGF-β1 (codon 10, codon 25) gene polymorphisms and brucellosis. METHODS We performed a comprehensive search of the PubMed, EMBASE, Web of Science, OVID-EBMR, and the Cochrane Library up to Oct. 30, 2018. The search was designed using the following key words: "brucellosis" or" "brucella melitensis", "IL-10" or "interleukin10" or "interleukin-10", "IL-6" or "interleukin6" or "interleukin-6", "TGF-β1" or "TGF-beta1" or "transforming growth factor β1", "polymorphism" and "single nucleotide polymorphism (SNP)". Crude odds ratios (ORs) with 95% confidence intervals (CIs) were used to measure the strength of association between TGF-β1, IL-10 and IL-6 polymorphisms and brucellosis risk. All the statistical analyses were conducted by Review manager 5.3 software. RESULTS A total of 8 studies involving 1308 cases and 902 controls met the inclusion criteria for IL-6, IL-10, TGF-β1 polymorphisms and brucellosis risk. There was a slightly trend of increasing risk of brucellosis in individuals with the G allele compared with individuals with the C allele (OR = 1.07, 95% CI: 0.85-1.33, P = 0.57) in IL-6 polymorphism. However, statistical analysis showed that these differences are not significant. Our results suggested TGF-β1 (codon 25 G/C) GG genotype may be considered as a risk factor for brucellosis (OR = 1.67, 95% CI: 1.12-2.50, P = 0.01). Herein, we failed to find any significant association between IL-10 (-1082 A/G, -819C/T), TGF-β1 (codon 10C/T) gene polymorphism and susceptibility to brucellosis in all gene models. CONCLUSION IL-6 (-174 G/C), IL-10 (-1082 A/G, -819C/T), and TGF-β1 (codon 10C/T) polymorphisms is not a risk factor for brucellosis infection. TGF-β1 codon 25 GG genotype may be considered as a risk factor for brucellosis.
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Affiliation(s)
- Juan Fu
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Hong-Yan He
- Experimental Teaching Center, School of Public Health of Southwest Medical University, Luzhou, 646000, China
| | - Suvash Chandra Ojha
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Han Shi
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Chang-Feng Sun
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Cun-Liang Deng
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Yun-Jian Sheng
- Department of Infectious Diseases, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China.
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10
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Sadeghi Y, Tabatabaei Irani P, Rafiee L, Tajadini M, Amouheidari A, Javanmard SH. Evaluation of rs1982073 polymorphism of transforming growth factor-β1 in glioblastoma. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2019; 24:40. [PMID: 31160907 PMCID: PMC6540769 DOI: 10.4103/jrms.jrms_850_18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 01/07/2019] [Accepted: 02/20/2019] [Indexed: 11/04/2022]
Abstract
Background Glioblastoma (GBM) is the most common and invasive form of primary malignant brain tumors, with a survival rate of about 1 year. Transforming growth factor-β1 (TGF-β1) plays a very important role in tissue homeostasis and cancers. It seems that polymorphism of T29C (L10P, rs1982073, or rs1800470), which has been studied in various cancers such as breast and colon, creates the significant differences plays an important role in GBM prognosis and treatment. In this study, we evaluated the effect of T29C (rs1982073) polymorphism of TGF-β1 gene in GBM. Materials and Methods This study was conducted on 100 cases of GBM including 47 paraffin-embedded brain tissue samples and 53 blood samples from another 53 GBM patients, who was under therapy, and 150 were controls. The TGF-β rs1982073 single-nucleotide polymorphism (SNP) was identified by the NCBI and genotyping was performed by high-resolution melt (HRM) assay. Melt curves from HRM which suspected to SNP were selected and subjected to direct sequencing. Finally, the collected data were entered into the SPSS software (Version. 20) and mean ± standard deviation or n (%) was used to show the data. Results The mean age in GBM group was 51.63 ± 13.27 years. Accordingly, the two groups were matched in terms of age and gender (P > 0.05). The frequency of GG genotype was significantly higher in GBM patients. In contrast, although the frequency of AG genotype was higher in GBM group, it was not statistically significant. Furthermore, the presence of G allele was significantly more frequent than A allele in GBM patients. Conclusion Findings of the present study supports that the Pro10Leu, rs1982073, or rs1800470 SNP in TGF-β1 is found to be expressed significantly more in GBM patients as it was found in breast cancer.
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Affiliation(s)
- Yasaman Sadeghi
- General Medicine, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Pouya Tabatabaei Irani
- General Medicine, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Laleh Rafiee
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan, Iran.,Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohamadhasan Tajadini
- Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Alireza Amouheidari
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan, Iran.,Department of Radiation Oncology, Isfahan Milad Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Shaghayegh Haghjooy Javanmard
- Applied Physiology Research Center, Isfahan Cardiovascular Research Institute, Isfahan, Iran.,Department of Physiology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
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11
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Tumor necrosis factor-alpha and tumor necrosis factor beta polymorphisms and risk of breast cancer: Review. GENE REPORTS 2018. [DOI: 10.1016/j.genrep.2018.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Trugilo KP, Cebinelli GCM, Berti FCB, Okuyama NCM, Cezar-Dos-Santos F, Sena MM, Mangieri LFL, Watanabe MAE, de Oliveira KB. Polymorphisms in the TGFB1 signal peptide influence human papillomavirus infection and development of cervical lesions. Med Microbiol Immunol 2018; 208:49-58. [PMID: 30167873 DOI: 10.1007/s00430-018-0557-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 08/23/2018] [Indexed: 12/26/2022]
Abstract
The main purpose was to assess the effect of c.29C>T and c.74G>C polymorphisms in the TGFB1 signal peptide on HPV infection and development of cervical lesions. Cervical swabs and blood samples were obtained from 349 outpatient women, along with socio-demographic and sexual behavioral data. The study population was stratified by absence or presence of HPV DNA, as tested by PCR, as well as by lesion grade. TGFB1 signal peptide polymorphisms were genotyped using PCR-restriction fragment length polymorphism. HPV DNA was detected in 172 (49.3%) patients. c.74GC and the combined c.29CC+CT/c.74GC genotype were more frequent in infected patients (35.1 and 15.7%) than in uninfected women (6.2 and 14.7%). Accordingly, these genotypes were associated with a higher risk of HPV infection, with odds ratio and 95% confidence interval of 2.81 and 1.35-5.86 (P = 0.004) for c.74GC and 3.14 and 1.42-6.94 (P = 0.004) for the combined genotype, respectively. High-grade lesions were also 2.48 times more likely to occur in c.29CC patients than in c.29TT patients, with a 95% confidence interval of 1.01-6.08 (P = 0.047). The data demonstrate that c.74G>C and c.29C>T polymorphisms are significantly associated with risk of HPV infection and high-grade squamous intraepithelial lesions, respectively. Thus, TGFB1 signal peptide polymorphisms are potential susceptibility markers.
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Affiliation(s)
- Kleber Paiva Trugilo
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | | | - Fernanda Costa Brandão Berti
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Nádia Calvo Martins Okuyama
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Fernando Cezar-Dos-Santos
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Michelle Mota Sena
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Luis Fernando Lásaro Mangieri
- Department of Gynecology and Obstetrics, Health Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Maria Angelica Ehara Watanabe
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil
| | - Karen Brajão de Oliveira
- Department of Pathological Science, Biological Science Center, State University of Londrina, Londrina, Paraná, Brazil.
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Vitiello GAF, Guembarovski RL, Hirata BKB, Amarante MK, de Oliveira CEC, de Oliveira KB, Cebinelli GCM, Guembarovski AL, Campos CZ, Watanabe MAE. Transforming growth factor beta 1 (TGFβ1) polymorphisms and haplotype structures have dual roles in breast cancer pathogenesis. J Cancer Res Clin Oncol 2018; 144:645-655. [PMID: 29362917 DOI: 10.1007/s00432-018-2585-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 01/15/2018] [Indexed: 12/11/2022]
Abstract
PURPOSE Despite the documented dual role of TGFβ1 in breast cancer (BC) pathogenesis, the subtype-specific influences of its polymorphisms remain undocumented. The present study investigated the effects of the TGFB1 promoter region (rs1800468 or G-800A and rs1800469 or C-509T) and signal peptide (rs1800470 or C29T and rs1800471 or G74C) single nucleotide polymorphisms (SNPs) and their haplotype structures on the susceptibility and clinicopathological presentation of BC subtypes. METHODS TGFB1 genotypes were assessed by PCR-RFLP and haplotype structures were inferred for 323 BC patients and 405 neoplasia-free women, and case-control analyses were performed by logistic regression adjusted by age. Clinicopathological parameters (age at diagnosis, tumor size, histopathological grade, lymph node metastasis, proliferation index and disease stage) were tested for correlation with TGFB1 variants. All statistical analyses were two-tailed with an alpha level of 0.05. RESULTS Variants related to increased TGFβ1 production (C-509T SNP and GTCG haplotype) were associated with increased susceptibility to HER2+ tumors and correlated with worse prognostic parameters in HER2+ and triple-negative (TN) BCs, but correlated negatively to Ki67 in ER/PR+HER2- tumors. Conversely, low TGFβ1 production variants (C29T SNP and GCTG haplotype) were protective against HER2+ tumors and correlated negatively with prognostic parameters in HER2+ and TN BCs, while indicating higher proliferation rates in ER/PR+HER2- tumors. Furthermore, the GCCG haplotype was associated with decreased susceptibility to ER/PR+HER2- tumors, but correlated positively with Ki67 in this subgroup. CONCLUSION The present study indicates that TGFB1 variants have subtype-specific roles in BC and may switch from tumor suppressor to promoter during tumor development, consistent with TGFβ1 dual role in BC pathogenesis.
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Affiliation(s)
- Glauco Akelinghton Freire Vitiello
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil
| | | | - Bruna Karina Banin Hirata
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil
| | - Marla Karine Amarante
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil
| | - Carlos Eduardo Coral de Oliveira
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil
| | - Karen Brajão de Oliveira
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil
| | - Guilherme Cesar Martelossi Cebinelli
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil
| | - Alda Losi Guembarovski
- Department of Pathology, Clinical and Toxicological Analysis, Londrina State University, Londrina, Parana, Brazil
| | | | - Maria Angelica Ehara Watanabe
- Laboratory of studies and applications of DNA polymorphisms and Immunology, Department of Pathological Sciences, Biological Sciences Center, Londrina State University, PR445 (Celso Garcia Cid highway), Km 380, Londrina, PR, 86057-970, Brazil.
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Association between Altered Expression and Genetic Variations of Transforming Growth Factor β-Smad Pathway with Chronic Myeloid Leukemia. Int J Hematol Oncol Stem Cell Res 2018; 12:14-22. [PMID: 29951173 PMCID: PMC6018248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background: Chronic myeloid leukemia (CML) is a hematological disorder caused by fusion of BCR and ABL genes. BCR-ABL dependent and independent pathways play equally important role in CML. TGFβ-Smad pathway, an important BCR -ABL independent pathway, has scarce data in CML. Present study investigate the association between TGFβ-Smad pathway and CML. Materials and Methods: Sixty-four CML patients and age matched healthy controls (n=63) were enrolled in this study. Patients were segregated into responder and resistant groups depending on their response to Imatinib mesylate (IM). TGFβ1 serum levels were evaluated by ELISA and transcript levels of TGFβ1 receptors, SMAD4 and SMAD7 were evaluated by Real-Time PCR. Sequencing of exons and exon-intron boundaries of study genes was performed using Next Generation Sequencing (NGS) in 20 CML patients. Statistical analysis was performed using SPSS version 16.0. Results:TGFβ1 serum levels were significantly elevated (p = 0.02) and TGFβR2 and SMAD4 were significantly down-regulated (p = 0.012 and p = 0.043 respectively) in the patients. c.69A>G in TGFβ1, c.1024+24G>A in TGFβR1 and g.46474746C>T in SMAD7 were the most important genetic variants observed with their presence in 10/20, 8/20 and 7/20 patients respectively. In addition, TGFβR1 transcript levels were reduced in CML patients with c.69A>G mutation. None of the genes differed significantly in terms of expression or genetic variants between responder and resistant patient groups. Conclusion: Our findings demonstrate the role of differential expression and genetic variants of TGFβ-Smad pathway in CML. Decreased TGFβR2 and SMAD4 levels observed in the present study may be responsible for reduced tumor suppressive effects of this pathway in CML.
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Eskandari E, Metanat M, Pahlevani E, Nakhzari-Khodakheir T. Association between TGFβ1 polymorphisms and chronic hepatitis B infection in an Iranian population. Rev Soc Bras Med Trop 2017; 50:301-308. [PMID: 28700046 DOI: 10.1590/0037-8682-0266-2016] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 03/06/2017] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION: Transforming growth factor-beta 1 (TGFβ1) is a potent suppressive cytokine that contributes to chronic hepatitis B (CHB) infection. Disparities in TGFβ1 production among individuals have been attributed to TGFβ1 genetic polymorphisms. We examined whether three putative polymorphisms in TGFβ1[-509 C/T (rs1800469), +869 C/T (rs1800470), and +11929 C/T (rs1800472)]are associated with CHB infection in a South-Eastern Iranian population. METHODS: In total, 341 subjects were recruited, including 178 patients with CHB and 163 healthy individuals as controls. Genotyping of the three TGFβ1 SNPs was performed by tetra amplification refractory mutation system-PCR. RESULTS: TheTGFβ1 +869 TT vs.CC genotype in codominant (OR=0.445, p=0.012) and TT vs. TC+CC in the recessive (OR=0.439, p=0.003) model as well as the variant allele T vs. C(OR=0.714, p=0.038) were associated with lower CHB infection risk. However, the +11929 C/T polymorphism was associated with increased CHB risk, and the CT vs. CC genotype (OR=2.77, P=0.001) and T variant allele (OR=2.53, P=0.002) were risk factors for CHB. Furthermore, TTT (+869/-509/+11929) and CCC haplotypes were risk and protective factors for CHB, respectively. We found no significant association between viral DNA load and TGFβ1 genotype or hepatic enzyme levels (p >0.05). CONCLUSIONS: Results indicated that the TGFβ1+869TT genotype and T allele were protective factors, whereas the +11929 CT genotype and T allele were risk factors for CHB infection.
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Affiliation(s)
- Ebrahim Eskandari
- Genetic of Non-Communicable Disease Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.,Department of Clinical Biochemistry, School of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Malihe Metanat
- Infectious Diseases & Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Elham Pahlevani
- Infectious Diseases & Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
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The Relationship between VEGFA and TGFB1 Polymorphisms and Target Lesion Revascularization after Elective Percutaneous Coronary Intervention. DISEASE MARKERS 2017; 2017:8165219. [PMID: 28811677 PMCID: PMC5546133 DOI: 10.1155/2017/8165219] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 06/10/2017] [Accepted: 06/14/2017] [Indexed: 12/31/2022]
Abstract
Background and Aim The specific association between genetic variation and in-stent restenosis is still only partly understood. The aim of this study is to analyze the relationship between functional polymorphisms in the genes encoding vascular endothelial growth factor A (VEGF-A; rs699947) and transforming growth factor beta 1 (TGF-β1; rs1800470) and target lesion revascularization (TLR) risk. Methods A total of 676 patients (805 lesions) with stable coronary artery disease (SCAD) who received elective percutaneous coronary intervention (PCI) with at least one bare-metal stent implantation were included. The primary study endpoint was TLR at a 4-year follow-up. Results The TLR rate was higher in patients with the VEGFA A/A genotype (15.4%) than in patients with the VEGFA A/C (7.9%) and C/C (8.9%) genotypes (p = 0.009). The VEGFA A/A genotype, after adjustment for clinical and procedural covariates, remained significantly and independently associated with the TLR (hazard ratio—2.09 [95% confidence interval 1.32–3.33, p = 0.0017]). However, we found no association between TLR and the TGFB1 genotype. Conclusion The VEGFA A/A genotype is significantly and independently associated with TLR risk in Polish SCAD patients who received elective PCI with bare-metal stent implantation.
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Zhang L, Mao L, Xu J. Transforming growth factor-β1 polymorphisms and graft-versus-host disease risk: a meta-analysis. Oncotarget 2016; 7:2455-61. [PMID: 26544732 PMCID: PMC4823047 DOI: 10.18632/oncotarget.6289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 10/04/2015] [Indexed: 11/25/2022] Open
Abstract
Some studies have demonstrated that transforming growth factor (TGF)-β polymorphisms may have an important role in the pathological process of graft-versus-host disease (GVHD). However, the results are not consistent. Thus, we performed a meta-analysis. Online databases were searched to obtain relevant articles published up until May 2015. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of associations. Donors (OR=0.56; 95%CI, 0.32-0.98; P=0.04) and recipients (OR=0.73; 95%CI, 0.63-0.85; P<0.0001) with TGF-β1 rs1800469 polymorphism showed decreased GVHD risk, respectively. Donors with TGF-β1 rs1800470 polymorphism were also observed to have lower GVHD risk (OR=0.65; 95%CI, 0.46-0.94; P=0.02). However, TGF-β1 rs1800470 polymorphism in recipients was not associated with GVHD risk (OR=1.28; 95%CI, 0.81-2.01; P=0.29). No significant heterogeneity was found in the meta-analysis. This meta-analysis suggests that donors or recipients with TGF-β1 rs1800469 polymorphism and donors with TGF-β1 rs1800470 polymorphism might be associated with reduced GVHD risk.
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Affiliation(s)
- Lin Zhang
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Lihong Mao
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Junxiu Xu
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Osadnik T, Strzelczyk JK, Lekston A, Reguła R, Bujak K, Fronczek M, Gawlita M, Gonera M, Wasilewski J, Szyguła-Jurkiewicz B, Gierlotka M, Gąsior M. The association of functional polymorphisms in genes encoding growth factors for endothelial cells and smooth muscle cells with the severity of coronary artery disease. BMC Cardiovasc Disord 2016; 16:218. [PMID: 27835972 PMCID: PMC5106826 DOI: 10.1186/s12872-016-0402-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Accepted: 11/08/2016] [Indexed: 12/18/2022] Open
Abstract
Background Despite the important roles of vascular smooth muscle cells and endothelial cells in atherosclerotic lesion formation, data regarding the associations of functional polymorphisms in the genes encoding growth factors with the severity of coronary artery disease (CAD) are lacking. The aim of the present study is to analyze the relationships between functional polymorphisms in genes encoding basic fibroblast growth factor (bFGF, FGF2), epidermal growth factor (EGF), insulin-like growth factor-1 (IGF-1), platelet derived growth factor-B (PDGFB), transforming growth factor-β1 (TGF-β1) and vascular endothelial growth factor A (VEGF-A) and the severity of coronary atherosclerosis in patients with stable CAD undergoing their first coronary angiography. Methods In total, 319 patients with stable CAD who underwent their first coronary angiography at the Silesian Centre for Heart Diseases in Zabrze, Poland were included in the analysis. CAD burden was assessed using the Gensini score. The TaqMan method was used for genotyping of selected functional polymorphisms in the FGF2, PDGFB, TGFB1, IGF1 and VEGFA genes, while rs4444903 in the EGF gene was genotyped using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. The associations between the selected polymorphisms and the Gensini were calculated both for the whole cohort and for a subgroup of patients without previous myocardial infarction (MI). Results There were no differences in the distribution of the Gensini score between the genotypes of the analyzed polymorphisms in FGF2, EGF, IGF1, PDFGB, and TGFB1 in the whole cohort and in the subgroup of patients without previous MI. The Gensini score for VEGFA rs699947 single-nucleotide polymorphism (SNP) in patients without previous myocardial infarction, after correction for multiple testing, was highest in patients with the A/A genotype, lower in heterozygotes and lowest in patients with the C/C genotype, (p value for trend = 0.013, false discovery rate (FDR) = 0.02). After adjustment for clinical variables, and correction for multiple comparisons the association between the VEGFA genotype and Gensini score remained only nominally significant (p = 0.04, FDR = 0.19) under the dominant genetic model in patients without previous MI. Conclusions We were unable to find strong association between analyzed polymorphisms in growth factors and the severity of coronary artery disease, although there was a trend toward association between rs699947 and the severity of CAD in patients without previous MI. Electronic supplementary material The online version of this article (doi:10.1186/s12872-016-0402-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tadeusz Osadnik
- 2nd Department of Cardiology and Angiology, Silesian Center for Heart Diseases, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland. .,Genomics Laboratory, Kardio-Med Silesia Science and Technology Park, Marii Curie-Skłodowskiej Street 10C, 41-800, Zabrze, Poland.
| | - Joanna Katarzyna Strzelczyk
- Department of Medical and Molecular Biology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Jordana Street 19, 41-808, Zabrze, Poland
| | - Andrzej Lekston
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Rafał Reguła
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Kamil Bujak
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Martyna Fronczek
- Genomics Laboratory, Kardio-Med Silesia Science and Technology Park, Marii Curie-Skłodowskiej Street 10C, 41-800, Zabrze, Poland.,Silesian Center for Heart Diseases, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Marcin Gawlita
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Małgorzata Gonera
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Jarosław Wasilewski
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Bożena Szyguła-Jurkiewicz
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Marek Gierlotka
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
| | - Mariusz Gąsior
- 3rd Department of Cardiology, School of Medicine with the Division of Dentistry in Zabrze, Medical University of Silesia, Katowice, Marii Curie-Skłodowskiej Street 9, 41-800, Zabrze, Poland
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Yang M, Zhu M, Tang L, Zhu H, Lu Y, Xu B, Jiang J, Chen X. Polymorphisms of TGFβ-1 and TGFBR2 in relation to coronary artery disease in a Chinese population. Clin Biochem 2016; 49:873-8. [PMID: 27234600 DOI: 10.1016/j.clinbiochem.2016.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 05/18/2016] [Accepted: 05/20/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND AND AIM TGF-β1 has been previously reported to be involved in the pathogenesis of atherosclerosis. The aim of the present study was to assess whether functional gene polymorphisms of TGF-β1 and its key receptor TGF-β receptor type II (TGFBR2) contribute as risk factors to the onset and severity of atherosclerotic coronary artery disease (CAD). DESIGN AND METHODS A total of 605 patients who underwent angiography for suspected CAD were prospectively recruited to this study. Coronary stenosis severity was assessed by the number of narrowed coronary vessels and the Gensini score. Among them, 502 patients had documented CAD, and 103 patients without documented CAD served as non-CAD controls. All patients were genotyped for one TGF-β1 polymorphism (rs1800470 (+T29C)) and two TGFBR2 polymorphisms (rs6785385 (-3779A/G), rs764522 (-1444C/G)) by polymerase chain reaction-restriction fragment length polymorphism and confirmed by direct sequencing. RESULTS No significant difference in the frequency for either polymorphism was found between CAD and control patients. Neither TGFBR2 rs6785385 (-3779A/G) nor rs764522 (-1444C/G) gene polymorphisms were associated with the severity of CAD (P>0.05). In male CAD patients, polymorphisms at TGF-β1 rs1800470 (+T29C) were, however, associated with the severity of CAD. The T allele frequency was significantly and positively correlated with the number of narrowed coronary arteries (three or more vessels: 49.3%, two vessels: 44.1%, one vessel: 36.9%) (P=0.039). Gensini scores in patients with the TT, CT, and CC genotype were 34.33±2.23, 32.06±4.79, and 26.90±3.83, respectively (P<0.05). In multiple linear regression analysis, the T allele of TGF-β1 polymorphism was independently correlated with the Gensini score (β=0.131). CONCLUSION TGF-β1 T29C gene polymorphism may be associated with severity of CAD in male patients. TGFBR2 polymorphisms may not determine the genetic susceptibility to CAD.
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Affiliation(s)
- Minjun Yang
- Laboratory of Cardiovascular Disease, China; Department of Cardiology, Taizhou Hospital, Wenzhou Medical University, Zhejiang Province 317000, China
| | - Min Zhu
- Enze Medical Research Center, Taizhou, Zhejiang Province 317000, China
| | - Lijiang Tang
- Laboratory of Cardiovascular Disease, China; Zhejiang Hospital, Zhejiang Province 317000, China
| | - Huanhuan Zhu
- Laboratory of Cardiovascular Disease, China; Department of Cardiology, Taizhou Hospital, Wenzhou Medical University, Zhejiang Province 317000, China
| | - Yifei Lu
- Laboratory of Cardiovascular Disease, China; Department of Cardiology, Taizhou Hospital, Wenzhou Medical University, Zhejiang Province 317000, China
| | - Baohui Xu
- Vascular Center, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jianjun Jiang
- Laboratory of Cardiovascular Disease, China; Department of Cardiology, Taizhou Hospital, Wenzhou Medical University, Zhejiang Province 317000, China.
| | - Xiaofeng Chen
- Laboratory of Cardiovascular Disease, China; Department of Cardiology, Taizhou Hospital, Wenzhou Medical University, Zhejiang Province 317000, China; Enze Medical Research Center, Taizhou, Zhejiang Province 317000, China.
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20
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Osadnik T, Strzelczyk JK, Reguła R, Bujak K, Fronczek M, Gonera M, Gawlita M, Wasilewski J, Lekston A, Kurek A, Gierlotka M, Trzeciak P, Hawranek M, Ostrowska Z, Wiczkowski A, Poloński L, Gąsior M. The Relationships between Polymorphisms in Genes Encoding the Growth Factors TGF-β1, PDGFB, EGF, bFGF and VEGF-A and the Restenosis Process in Patients with Stable Coronary Artery Disease Treated with Bare Metal Stent. PLoS One 2016; 11:e0150500. [PMID: 26930482 PMCID: PMC4773170 DOI: 10.1371/journal.pone.0150500] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 02/15/2016] [Indexed: 12/22/2022] Open
Abstract
Background Neointima forming after stent implantation consists of vascular smooth muscle cells (VSMCs) in 90%. Growth factors TGF-β1, PDGFB, EGF, bFGF and VEGF-A play an important role in VSMC proliferation and migration to the tunica intima after arterial wall injury. The aim of this paper was an analysis of functional polymorphisms in genes encoding TGF-β1, PDGFB, EGF, bFGF and VEGF-A in relation to in-stent restenosis (ISR). Materials and Methods 265 patients with a stable coronary artery disease (SCAD) hospitalized in our center in the years 2007–2011 were included in the study. All patients underwent stent implantation at admission to the hospital and had another coronary angiography performed due to recurrence of the ailments or a positive result of the test assessing the coronary flow reserve. Angiographically significant ISR was defined as stenosis >50% in the stented coronary artery segment. The patients were divided into two groups–with angiographically significant ISR (n = 53) and without significant ISR (n = 212). Additionally, the assessment of late lumen loss (LLL) in vessel was performed. EGF rs4444903 polymorphism was genotyped using the PCR-RFLP method whilst rs1800470 (TGFB1), rs2285094 (PDGFB) rs308395 (bFGF) and rs699947 (VEGF-A) were determined using the TaqMan method. Results Angiographically significant ISR was significantly less frequently observed in the group of patients with the A/A genotype of rs1800470 polymorphism (TGFB1) versus patients with A/G and G/G genotypes. In the multivariable analysis, LLL was significantly lower in patients with the A/A genotype of rs1800470 (TGFB1) versus those with the A/G and G/G genotypes and higher in patients with the A/A genotype of the VEGF-A polymorphism versus the A/C and C/C genotypes. The C/C genotype of rs2285094 (PDGFB) was associated with greater LLL compared to C/T heterozygotes and T/T homozygotes. Conclusions The polymorphisms rs1800470, rs2285094 and rs6999447 of the TGFB1, PDGFB and VEGF-A genes, respectively, are associated with LLL in patients with SCAD treated by PCI with a metal stent implantation.
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Affiliation(s)
- Tadeusz Osadnik
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
- Genomics Laboratory, Kardio-Med Silesia Science and Technology Park, Zabrze, Poland
- * E-mail:
| | - Joanna Katarzyna Strzelczyk
- Department of Medical and Molecular Biology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Rafał Reguła
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Kamil Bujak
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Martyna Fronczek
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
- Genomics Laboratory, Kardio-Med Silesia Science and Technology Park, Zabrze, Poland
| | - Małgorzata Gonera
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Marcin Gawlita
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Jarosław Wasilewski
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Andrzej Lekston
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Anna Kurek
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Marek Gierlotka
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Przemysław Trzeciak
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Michał Hawranek
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Zofia Ostrowska
- Department of Medical and Molecular Biology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Andrzej Wiczkowski
- Department of Medical and Molecular Biology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Lech Poloński
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
| | - Mariusz Gąsior
- Third Department of Cardiology, School of Medicine with the Division of Dentistry, Medical University of Silesia, Zabrze, Poland
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21
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Gautam KA, Pooja S, Sankhwar SN, Sankhwar PL, Goel A, Rajender S. c.29C>T polymorphism in the transforming growth factor-β1 (TGFB1) gene correlates with increased risk of urinary bladder cancer. Cytokine 2015; 75:344-8. [PMID: 26048435 DOI: 10.1016/j.cyto.2015.05.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 04/28/2015] [Accepted: 05/19/2015] [Indexed: 12/28/2022]
Abstract
TGF-β1 is a pleiotropic cytokine, which plays a dual role in tumor development. In the early stages, it inhibits the growth of tumor while in the late stages of carcinoma, it promotes tumor growth. The purpose of this study was to analyze the distribution of the TGFB1 gene polymorphisms between cases and controls so as to assess their correlation with bladder cancer risk. This study included 237 cases of urinary bladder cancer and 290 age matched controls from the same ethnic background. Three polymorphisms in the TGFB1 gene, c.29C>T (rs-1800470), c.74G>C (rs-1800471) and +140A>G (rs-13447341), were analyzed by direct DNA sequencing. Statistical analyses revealed no significant differences in the demographical data, except that the frequencies of smokers and non-vegetarians were higher in the cases. Eighty percent of the bladder cancer patients had superficial transitional cell carcinoma, and 53.16% and 26.31% of the patients were in grade I and grade II, respectively. We found that c.29C>T substitution increased the risk of bladder cancer significantly and recessive model of analysis was the best fitted model (p=0.004; OR=1.72 95% CI 1.18-2.50). A significantly higher risk in the recessive form was also suggested by co-dominant analysis showing that the homozygous form (TT) was a significant risk factor in comparison to CC and CT genotypes. The other two polymorphisms, c.74G>C (p=0.18, OR=0.67 95% CI 0.37-1.21) and +140A>G (p=0.416, OR=0.77 95% CI 0.41-1.45) did not affect the risk of urinary bladder cancer. In conclusion, we found that the TGFB1 c.29C>T substitution increases the risk of bladder cancer significantly while c.74G>C and +140A>G polymorphisms do not affect the risk.
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Affiliation(s)
| | - Singh Pooja
- Department of Pathology, King George's Medical University, Lucknow, India
| | | | - Pushp Lata Sankhwar
- Department of Obstetrics & Gynaecology, King George's Medical University, Lucknow, India
| | - Apul Goel
- Department of Urology, King George's Medical University, Lucknow, India
| | - Singh Rajender
- Endocrinology Division, Central Drug Research Institute, Lucknow, India.
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22
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Sepanjnia A, Eskandari-Nasab E, Moghadampour M, Tahmasebi A, Dahmardeh F. TGFβ1genetic variants are associated with an increased risk of acute brucellosis. Infect Dis (Lond) 2015; 47:458-64. [DOI: 10.3109/23744235.2015.1016298] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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23
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Stremitzer S, Zhang W, Yang D, Ning Y, Stintzing S, Sebio A, Sunakawa Y, Yamauchi S, Matsusaka S, El-Khoueiry R, Stift J, Wrba F, Gruenberger T, Lenz HJ. Genetic variations in angiopoietin and pericyte pathways and clinical outcome in patients with resected colorectal liver metastases. Cancer 2015; 121:1898-905. [PMID: 25690670 DOI: 10.1002/cncr.29259] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 08/20/2014] [Accepted: 09/02/2014] [Indexed: 01/24/2023]
Abstract
BACKGROUND Genes involved in the angiopoietin and pericyte pathways may become escape mechanisms under antivascular endothelial growth factor (anti-VEGF) therapy. The authors investigated whether variations within genes in these pathways are associated with clinical outcome in patients with colorectal liver metastases who undergo liver resection and receive perioperative, bevacizumab-based chemotherapy. METHODS Single nucleotide polymorphisms (SNPs) in 9 genes (angiopoietin-1 [ANGPT1]; ANGPT2; TEK tyrosine kinase, endothelial [TEK]; platelet-derived growth factor β [PDGFB]; β-type platelet-derived growth factor receptor [PDGFRB]; insulin-like growth factor 1 [IGF1]; transforming growth factor β1 [TGFB1]; RalA binding protein 1 [RALBP1]; and regulator of G-protein signaling 5 [RGS5]) were analyzed in samples of genomic DNA from 149 patients and were evaluated for associations with clinical outcome. RESULTS RALBP1 reference SNP 329007 (rs329007) A>G resulted in a significant difference in recurrence-free survival (A/A genotype, 14.0 months; A/G or G/G genotype, 9.2 months; hazard ratio [HR], 1.60; P = .024). PDGFB rs1800818 A>G was associated with 3-year overall survival rates (A/A genotype, 78%; A/G genotype, 69%; [HR 1.37]; G/G genotype, 53%; [HR 2.12]; P = .048). In multivariate analysis, RALBP1 rs329007 A>G remained significant (HR, 1.99; P = .002). PDGFB rs1800818 A>G and RALBP1 rs329007 A>G were correlated with radiologic response (A/A or A/G genotype, 86%; G/G genotype, 71% [P = .042]; A/A genotype, 78%; A/G or G/G genotype, 94% [P = .018], respectively). RALBP1 rs329007 A>G demonstrated significantly different rates of histologic response (A/A genotype: major histologic response, 35%; partial histologic response, 34%; no histologic response, 30%; A/G or G/G genotype: 46%, 13%, and 41%, respectively; P = .029). Recursive partitioning analysis revealed that ANGPT2 rs2442599 T>C and RALBP1 rs329007 A>G were the main SNPs that predicted histologic response and recurrence-free survival, whereas PDGFB rs1800818 A>G was the leading SNP that predicted overall survival. ANGPT2 rs2916702 C>T and rs2442631 G>A were significantly associated with the probability of achieving a cure. CONCLUSIONS The current data suggest that variations in genes involved in the angiopoietin and pericyte pathways may be predictive and/or prognostic biomarkers in patients with resected colorectal liver metastases who receive bevacizumab-based chemotherapy.
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Affiliation(s)
- Stefan Stremitzer
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California.,Department of Surgery, Medical University Vienna, Vienna, Austria
| | - Wu Zhang
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Dongyun Yang
- Department of Preventive Medicine, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Yan Ning
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Sebastian Stintzing
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Ana Sebio
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Yu Sunakawa
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Shinichi Yamauchi
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Satoshi Matsusaka
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Rita El-Khoueiry
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Judith Stift
- Clinical Institute of Pathology, Medical University Vienna, Vienna, Austria
| | - Friedrich Wrba
- Clinical Institute of Pathology, Medical University Vienna, Vienna, Austria
| | | | - Heinz-Josef Lenz
- Division of Medical Oncology, Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, California
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Alqumber MA, Dar SA, Haque S, Wahid M, Singh R, Akhter N. No Association of the TGF-β1 29T/C Polymorphism with Breast Cancer Risk in Caucasian and Asian Populations: Evidence from a Meta-Analysis Involving 55, 841 Subjects. Asian Pac J Cancer Prev 2014; 15:8725-34. [DOI: 10.7314/apjcp.2014.15.20.8725] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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25
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Al-Alawi M, Hassan T, Chotirmall SH. Transforming growth factor β and severe asthma: a perfect storm. Respir Med 2014; 108:1409-23. [PMID: 25240764 DOI: 10.1016/j.rmed.2014.08.008] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 08/13/2014] [Accepted: 08/21/2014] [Indexed: 12/18/2022]
Abstract
Asthma is a chronic inflammatory airway disease involving complex interplay between resident and infiltrative cells, which in turn are regulated by a wide range of host mediators. Identifying useful biomarkers correlating with clinical symptoms and degree of airway obstruction remain important to effective future asthma treatments. Transforming growth factor β (TGF-β) is a major mediator involved in pro-inflammatory responses and fibrotic tissue remodeling within the asthmatic lung. Its role however, as a therapeutic target remains controversial. The aim of this review is to highlight its role in severe asthma including interactions with adaptive T-helper cells, cytokines and differentiation through regulatory T-cells. Associations between TGF-β and eosinophils will be addressed and the effects of genetic polymorphisms of the TGF-β1 gene explored in the context of asthma. We highlight TGF-β1 as a potential future therapeutic target in severe asthma including its importance in identifying emerging clinical phenotypes in asthmatic subjects who may be suitable for individualized therapy through TGF-β modulation.
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Affiliation(s)
- Mazen Al-Alawi
- Department of Respiratory Medicine, Mater Misericordiae Hospital, Eccles Street, Dublin 7, Ireland
| | - Tidi Hassan
- Department of Respiratory Medicine, Mater Misericordiae Hospital, Eccles Street, Dublin 7, Ireland
| | - Sanjay H Chotirmall
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore.
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