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Rather RA, Dhawan V. Genetic markers: Potential candidates for cardiovascular disease. Int J Cardiol 2016; 220:914-23. [PMID: 27416153 DOI: 10.1016/j.ijcard.2016.06.251] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Revised: 06/22/2016] [Accepted: 06/26/2016] [Indexed: 02/07/2023]
Abstract
The effective prevention of cardiovascular disease depends upon the ability to recognize the high-risk individuals at an early stage of the disease or long before the development of adverse events. Evolving technologies in the fields of proteomics, metabolomics, and genomics have played a significant role in the discovery of cardiovascular biomarkers, but so far these methods have achieved the modest success. Hence, there is a crucial need for more reliable, suitable, and lasting diagnostic and therapeutic markers to screen the disease well in time to start the clinical aid to the patients. Gene polymorphisms associated with the cardiovascular disease play a decisive role in the disease onset. Therefore, the genetic marker evaluation to classify high-risk patients from low-risk patients trends an effective approach to patient management and care. Currently, there are no genetic markers available for extensive adoption as risk factors for coronary vascular disease, yet, there are numerous promising, biologically acceptable candidates. Many of these gene biomarkers, alone or in combination, can play an essential role in the prediction of cardiovascular risk. The present review highlights some putative emerging genetic biomarkers that could facilitate more authentic and fast diagnosis of CVD. This review also briefly describes few technological approaches employed in the biomarker search.
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Affiliation(s)
- Riyaz Ahmad Rather
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Veena Dhawan
- Department of Experimental Medicine and Biotechnology, Postgraduate Institute of Medical Education and Research, Chandigarh, India.
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Srivastava K, Narang R, Bhatia J, Saluja D. Expression of Heat Shock Protein 70 Gene and Its Correlation with Inflammatory Markers in Essential Hypertension. PLoS One 2016; 11:e0151060. [PMID: 26989902 PMCID: PMC4798713 DOI: 10.1371/journal.pone.0151060] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Accepted: 02/22/2016] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVES Hypertension is characterized by systemic high blood pressure and is the most common and important risk factor for the development of cardiovascular diseases. Studies have shown that the circulating levels of certain inflammatory markers such as tumor necrosis factor-alpha (TNF-alpha), interlukin-6 (IL-6), c-reactive protein (CRP), and tumor suppressor protein-53 (p53) are upregulated and are independently associated with essential hypertension. However, mechanism of increase in the levels of HSP70 protein is not clear. No such studies are reported in the blood circulation of patients with essential hypertension. In the present study, we investigated the expression of circulating HSP70 at mRNA and protein levels and its relationship with other inflammatory markers in patients with essential hypertension. MATERIALS AND METHODS We recruited 132 patients with essential hypertension and 132 normal controls from similar socio-economic-geographical background. The expression of HSP70 at mRNA levels was determined by Real Time PCR and at protein levels by indirect Elisa and Western Blot techniques. RESULTS We found a significantly higher expression of HSP70 gene expression (approximately 6.45 fold, P < 0.0001) in hypertensive patients as compared to healthy controls. A significant difference (P < 0.0001) in the protein expression of HSP70 was also observed in plasma of patients as compared to that of controls. CONCLUSION Higher expression of HSP70 is positively correlated with inflammatory markers in patients with essential hypertension and this correlation could play an important role in essential hypertension.
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Affiliation(s)
- Kamna Srivastava
- Dr. B R Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007, India
| | - Rajiv Narang
- Department of Cardiology, All India Institute of Medical Sciences, New Delhi-110029, India
| | - Jagriti Bhatia
- Department of Pharmacology, All India Institute of Medical Sciences, New Delhi- 110029, India
| | - Daman Saluja
- Dr. B R Ambedkar Center for Biomedical Research, University of Delhi, Delhi-110007, India
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Rivera-Molina YA, Rojas BR, Tang Q. Nuclear domain 10-associated proteins recognize and segregate intranuclear DNA/protein complexes to negate gene expression. Virol J 2012; 9:222. [PMID: 23021128 PMCID: PMC3502357 DOI: 10.1186/1743-422x-9-222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2012] [Accepted: 09/27/2012] [Indexed: 11/29/2022] Open
Abstract
Background DNA viruses, such as herpes simplex virus type 1 (HSV-1), Simian virus 40 (SV40), and Cytomegaloviruses (CMV), start their replicative processes and transcription at specific nuclear domains known as ND10 (nuclear domain 10, also called PML bodies). It has been previously determined that for HSV-1 and SV40, a short DNA sequence and its binding protein are required and sufficient for cell localization of viral DNA replication and gene transcription. Results Our recent observations provide evidence that a foreign (not endogenous) DNA/protein complex in the nucleus recruits ND10 proteins. First, the complexes formed from the bacterial lac operator DNA and its binding protein (lac repressor), or from HPV11 (human papillomavirus 11) origin DNA and its binding protein (E2), co-localized with different ND10 proteins. Second, the HSV-1 amplicon without inserted lac operator DNA repeats distributed in the nucleus randomly, whereas the amplicon with lac operator DNA repeats associated with ND10, suggesting that DNA-binding proteins are required to localize at ND10. The cellular intrinsic DNA/protein complex (as detected for U2 DNA) showed no association with ND10. Furthermore, our examination of PML−/−, Daxx−/−, and Sp100-negative cells led to our discovering that DNA/protein complexes recruit ND10 protein independently. Using the GFP-LacI/Operator system, we were able to direct the transfected DNA to ND10 and found that gene expression was significantly repressed when the transfected DNA was directed to ND10. Conclusion Taken together, the results suggest that cells recognize DNA/protein complexes through a mechanism that involves interaction with the ND10-associated proteins.
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Affiliation(s)
- Yisel A Rivera-Molina
- Department of Microbiology/RCMI Program, Ponce School of Medicine and Health Sciences, Ponce, 00716, Puerto Rico
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Genetic variations in HSPA8 gene associated with coronary heart disease risk in a Chinese population. PLoS One 2010; 5:e9684. [PMID: 20300519 PMCID: PMC2838785 DOI: 10.1371/journal.pone.0009684] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2009] [Accepted: 02/20/2010] [Indexed: 11/19/2022] Open
Abstract
Background There is ample evidence that Hsp70 takes part in the progress of coronary heart disease (CHD). This implies that genetic variants of Hsp70 genes such as HSPA8 (HSC70) gene might contribute to the development of CHD. The present study aimed to investigate whether certain genetic variants of HSPA8 gene are associated with CHD in Han Chinese people. Methodology/Principal Findings A total of 2006 subjects (1003 CHD cases and 1003 age- and sex- matched healthy controls) were recruited. Genetic variants in the HSPA8 gene were identified by sequencing of the gene in 60 unrelated Chinese. Four tag single nucleotide polymorphisms (tagSNPs) (rs2236659, rs2276077, rs10892958, and rs1461496) were selected and genotyped. The function of the significant SNP was evaluated using luciferase reporter assays in two cell lines. By sequencing the promoter and all exons and introns of the HSPA8 gene, 23 genetic variants were identified. One promoter SNP rs2236659 was associated with susceptibility to CHD. Carriers of the “C” allele of rs2236659 had decreased CHD risk with odds ratio (OR) of 0.78 (95% CI: 0.62, 0.98; P = 0.033) after adjustment for conventional risk factors. Haplotype analyses indicated that haplotype GCGC contributed to a lower CHD risk (OR = 0.78, 95% CI: 0.65, 0.93; P = 0.006) compared with the common haplotype AGGT. In a transfection assay, the C allele of rs2236659 showed a 37–40% increase in luciferase expression of the reporter gene luciferase in endothelial and non-endothelial cells compared with the T allele. Conclusions/Significance These findings suggest that genetic variants in HSPA8 gene (especially promoter SNP rs2236659) contribute to the CHD susceptibility by affecting its expression level.
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Qi Y, Niu WQ, Zhu TC, Liu JL, Dong WY, Xu Y, Ding SQ, Cui CB, Pan YJ, Yu GS, Zhou WY, Qiu CC. Genetic interaction of Hsp70 family genes polymorphisms with high-altitude pulmonary edema among Chinese railway constructors at altitudes exceeding 4000 meters. Clin Chim Acta 2009; 405:17-22. [DOI: 10.1016/j.cca.2009.03.056] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2009] [Revised: 03/23/2009] [Accepted: 03/24/2009] [Indexed: 01/02/2023]
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Li JX, Tang BP, Sun HP, Feng M, Cheng ZH, Niu WQ. Interacting contribution of the five polymorphisms in three genes of Hsp70 family to essential hypertension in Uygur ethnicity. Cell Stress Chaperones 2009; 14:355-62. [PMID: 19085089 PMCID: PMC2728270 DOI: 10.1007/s12192-008-0089-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2008] [Revised: 09/24/2008] [Accepted: 10/15/2008] [Indexed: 10/21/2022] Open
Abstract
Experimental evidence suggesting that heat shock protein 70 (Hsp70) gene or associated genes are responsible for the pathophysiology of hypertension is accumulating. In this study, we focused on five polymorphisms in three genes (HSPA1A, HSPA1B, and HSPA1L) of Hsp70 family to explore the genetic contribution, alone and in combination, of these polymorphisms to essential hypertension risk in a Uygur population. Genotyping was performed using PCR-RFLP and direct sequencing techniques. Data were analyzed using haplotype and multifactor dimensionality reduction (MDR) methods. Genotype distributions of all the polymorphisms satisfied the Hardy-Weinberg proportions in cases and controls. Statistical significance was only observed in the genotype (P = 0.0028) and (P = 0.0146) allele distributions of -110A/C polymorphism, with the -110C allele conferring a 1.45- and 2.83-fold of relative risk, assuming the additive and recessive models, respectively, and in 1267A/G genotype distribution (P = 0.0106) with the 1267G allele conferring a 44% reduced risk. The interaction information analysis indicated that polymorphisms -110A/C and 1267A/G had a strong synergistic effect, while polymorphisms 2074G/C and 2437T/C had a moderate synergistic effect. Haplotype analyses further strengthened the interaction information. Using the haplotype H(1) as a reference, haplotype H(4) had a 40% reduced risk, while haplotypes H(5) and H(8) had a significantly 5.00- and 3.75-fold increased risk for essential hypertension, respectively. Taken together, our results supported strong genetic interaction of the studied polymorphisms with the risk of having essential hypertension in Uygur ethnicity. Functional studies are warranted to confirm or refute these findings. This is the first study to evaluate the genetic interaction information of the Hsp70 in Uygur ethnicity, which represents one of the major nationalities in China with high homogeneity and unique lifestyles. Moreover, we employed the haplotype and MDR methods to explore the potential interaction of Hsp70 genetic polymorphisms in the pathogenesis of essential hypertension in Uygur.
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Affiliation(s)
- Jin-Xin Li
- Cardiology Department, The First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan Road, 830011 Urumqi, Xinjiang China
| | - Bao-Peng Tang
- Cardiology Department, The First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan Road, 830011 Urumqi, Xinjiang China
| | - Hui-Ping Sun
- Cardiology Department, The First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan Road, 830011 Urumqi, Xinjiang China
| | - Min Feng
- Clinical Laboratory of Diagnostic Department, The Affiliated Tumor Hospital of Xinjiang Medical University, No. 30, Beijing South Road, 830011 Urumqi, Xinjiang China
| | - Zu-Heng Cheng
- Cardiology Department, The First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan Road, 830011 Urumqi, Xinjiang China
| | - Wen-Quan Niu
- State Key Laboratory of Medical Genomics, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Ruijin Second Road 197, 200025 Shanghai, China
- Shanghai Key Laboratory of Vascular Biology, Shanghai Institute of Hypertension and Sino-French Research Center for Life Science and Genomics, Ruijin Hospital, Ruijin Second Road 197, 200025 Shanghai, China
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He M, Guo H, Yang X, Zhang X, Zhou L, Cheng L, Zeng H, Hu FB, Tanguay RM, Wu T. Functional SNPs in HSPA1A gene predict risk of coronary heart disease. PLoS One 2009; 4:e4851. [PMID: 19333379 PMCID: PMC2659421 DOI: 10.1371/journal.pone.0004851] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Accepted: 02/13/2009] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND HSP70 plays crucial roles in endothelial cell apoptosis, which is involved in the early phase and progress of coronary heart disease (CHD). However, the association between polymorphisms of HSP70 genes and the risk of CHD still remains unclear. Our aim was to determine whether genetic variants in the HSPA1A gene are associated with the risk of CHD. METHODOLOGY/PRINCIPAL FINDINGS By resequencing and genotyping, the associations of 2 single nucleotide polymorphisms (SNPs) +190G/C (rs1043618) and -110A/C (rs1008438) in the HSPA1A gene with risk of CHD were determined in a 1,003 pairs case-control study. The SNP function was further analyzed using a luciferase reporter assay in two cell lines. The results indicated that +190CC genotype was associated with significantly higher risk of CHD when compared with +190GG genotype (OR = 1.56, 95% CI: 1.10-2.20, P = 0.012), while association between -110A/C polymorphism and CHD was not statistically significant (P>0.05). However, the -110C/+190C haplotype had a significantly higher risk of CHD when compared with the -110A/+190G haplotype (OR = 1.17, 95% CI: 1.01-1.34, P = 0.031). Luciferase reporter assays showed that the +190C allele resulted in 14% ~ 45% reduction in luciferase expression in endothelial and non-endothelial cells when compared with the +190G allele. CONCLUSIONS/SIGNIFICANCE The identified genetic variants in the HSPA1A gene combinatorially contribute towards the susceptibility to CHD likely by affecting the level of synthesis of HSP70. This study may provide useful markers for identification of subjects at risk for CHD.
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Affiliation(s)
- Meian He
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Huan Guo
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaobo Yang
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Xiaomin Zhang
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Li Zhou
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Longxian Cheng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Hesong Zeng
- Department of Cardiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Frank B. Hu
- Departments of Nutrition and Epidemiology, Harvard School of Public Health, Boston, Massachusetts, United States of America
| | - Robert M. Tanguay
- Laboratory of Cellular and Developmental Genetics, Department of Medicine, Faculty of Medicine, and CREFSIP, Pavilion C.E. Marchand, Université Laval, Québec, Canada
| | - Tangchun Wu
- Institute of Occupational Medicine and the Ministry of Education Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
- * E-mail:
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Giacconi R, Cipriano C, Muti E, Costarelli L, Malavolta M, Caruso C, Lio D, Mocchegiani E. Involvement of -308 TNF-alpha and 1267 Hsp70-2 polymorphisms and zinc status in the susceptibility of coronary artery disease (CAD) in old patients. Biogerontology 2007; 7:347-56. [PMID: 16953332 DOI: 10.1007/s10522-006-9049-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Coronary artery disease (CAD) is characterized by an inflammatory status and it represents the major cause of death in elderly. Zinc deficiency and inflammatory genes within major histocompatibility complex (MHC) region are implicated in ischaemic heart diseases. TNF-alpha is present in coronary artery plaques and may provoke plaque instability. Hsp70 plays instead a pro-atherogenic role, via proinflammatory cytokine production, in atherosclerotic lesions contributing to plaque rupture. Contradictory data report the association between -308 TNF-alpha polymorphism and CAD, while no investigations exist on Hsp70-2 gene in CAD. In the current study, we analysed -308 TNF-alpha and 1267 Hsp70-2 polymorphisms and zinc status in 190 healthy old controls and 216 old patients with carotid stenosis subdivided in two groups: the first one 105 patients with CAD (C group), and the second one 111 patients without cardiovascular events (D group). We found a lack of association between -308 TNF-alpha polymorphism and CAD. Conversely, 1267 Hsp70-2 polymorphism was associated with CAD. In particular, significant higher frequency of AB + BB genotypes (B + genotype) was observed in C patients than controls (71.4 vs.56.9%, P = 0.017, odds ratio = 1.898). However, when C patients were subdivided into four subgroups on the basis of presence/absence of 1267B Hsp70-2 and -308A TNF-alpha alleles, B + A + patients showed higher prothrombin activity as well as Hsp70-2, TNF-alpha, IL-6 gene expressions in carotid atheroma when compared to B - A - genotypes. The zinc status (plasma and Zn/Fe ratio in erythrocytes) is not affected by these polymorphisms. However, zinc deficiency is present in CAD condition. In conclusion, 1267 HSP70-2 polymorphism and zinc deficiency, rather than -308 TNF-alpha, are independently associated with CAD. B + A+ and B + A- carriers seem more predisposed to ischaemic events; conversely, B - A- genotype may be considered a protective marker against CAD.
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Affiliation(s)
- Robertina Giacconi
- Immunolgy Ctr. (Section Nutrition, Immunity and Ageing), Res. Dept. INRCA, Via Birarelli 8, 60121, Ancona, Italy
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Zintzaras E, Kitsios G. Identification of chromosomal regions linked to premature myocardial infarction: a meta-analysis of whole-genome searches. J Hum Genet 2006; 51:1015-1021. [PMID: 17024316 DOI: 10.1007/s10038-006-0053-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2006] [Accepted: 08/13/2006] [Indexed: 10/24/2022]
Abstract
Myocardial infarction (MI) is a complication of coronary artery disease and the leading cause of death in the Western world. MI is considered a distinct phenotype with an increased genetic component for its premature type. MI's exact inheritance pattern is still unknown. Genome searches for identifying susceptibility loci for premature MI produced inconclusive or inconsistent results. Thus, a genome search meta-analysis (GSMA) was applied to available genome search data on premature MI. GSMA is a non-parametric method to identify genetic regions that rank high, on average in terms of linkage statistics across genome searches unweighted or weighted by study size. The significance of each region's average and heterogeneity, unadjusted or adjusted by neighbouring average simulated ranks, was calculated using a Monte Carlo test. The meta-analysis involved five genome searches in Caucasians. Eight regions (6p22.3-6p21.1, 14p13-14q13.1, 13q33.1-13q34, 5p15.33-5p15.1, 8q13.2-8q22.2, 1p36.21-1p35.2, 12q24.31-12q24.33, 8q24.21-8q24.3) were found to have significant average rank by either unweighted or weighted analyses. In addition, region 8q24.21-8q24.3 produced significant low heterogeneity (P (unadjusted)=0.03 and P (adjusted)=0.05). Four regions (6p22.3-6p21.1, 14p13-14q13.1, 8q13.2-8q22.2, 8q24.21-8q24.3) were not identified by the individual studies. The meta-analysis suggests that these four regions should be further investigated for genes that confer susceptibility to MI.
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Affiliation(s)
- Elias Zintzaras
- Department of Biomathematics, University of Thessaly School of Medicine, Papakyriazi 22, 41222, Larissa, Greece.
| | - Georgios Kitsios
- Department of Biomathematics, University of Thessaly School of Medicine, Papakyriazi 22, 41222, Larissa, Greece
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Fekete A, Viklický O, Hubácek JA, Rusai K, Erdei G, Treszl A, Vítko S, Tulassay T, Heemann U, Reusz G, Szabó AJ. Association between heat shock protein 70s and Toll-like receptor polymorphisms with long-term renal allograft survival. Transpl Int 2006; 19:190-6. [PMID: 16441767 DOI: 10.1111/j.1432-2277.2006.00265.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Long-term renal allograft survival has not improved significantly in recent years and only a minority of grafts survives for more than 15 years. To evaluate the association between HSPA1A G(190)C, HSPA1B A(1267)G and TLR4 A(299)G polymorphisms and allograft survival we analyzed DNA of patients with long-term renal graft function over 15 years (Tx15), consecutively transplanted recipients (Tx), patients with acute rejection and healthy controls. HSPA1B (1267)AA was less prevalent in Tx versus Tx15 (P = 0.02) and versus controls (P = 0.004). HSPA1B (1267)GG was more frequent in Tx versus Tx15 (P = 0.005) and versus controls (P = 0.002). HSPA1B (1267)G allele occurred more often in Tx versus Tx15 (P = 0.03), and versus controls (P = 0.02). TLR4 (299)AG genotype prevalence was increased in Tx15 versus Tx (P = 0.02), while TLR4 (299)G allele was more frequent in Tx15 versus Tx (P = 0.02). The increased frequency of HSPA1B (1267)AA and TLR4 (299)AG genotypes in Tx15 group indicates that better cytoprotective functions in HSPA1B (1267)AA and reduced proinflammatory response in TLR4 (299)AG carriers might have improved renal allograft survival.
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Affiliation(s)
- Andrea Fekete
- Research Laboratory of Paediatrics and Nephrology, Hungarian Academy of Sciences and Semmelweis University, Budapest, Hungary
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Giacconi R, Caruso C, Lio D, Muti E, Cipriano C, Saba V, Boccoli G, Gasparini N, Malavolta M, Mocchegiani E. 1267 HSP70-2 polymorphism as a risk factor for carotid plaque rupture and cerebral ischaemia in old type 2 diabetes-atherosclerotic patients. Mech Ageing Dev 2005; 126:866-73. [PMID: 15992611 DOI: 10.1016/j.mad.2005.03.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2004] [Revised: 02/17/2005] [Accepted: 03/16/2005] [Indexed: 11/20/2022]
Abstract
Patients with type 2 diabetes mellitus (NIDDM) are at risk for macrovascular disease complications, such as myocardial infarction (MI) or stroke from plaque rupture. Cytokines play a key role in plaque vulnerability. IFN-gamma inhibits collagen synthesis thereby affecting plaque stability. High IL-6, TNF-alpha, and dyslipidemia are risk factors for thrombosis. Abnormal increments of HSP70 in atherosclerotic plaques might lead to plaque instability and rupture caused by chronic inflammation, which up-regulates the expression of pro-inflammatory cytokines (IL-6 and TNF-alpha) in human monocytes. Studies of a polymorphic PstI site lying in the coding region at position 1267 of the HSP70-2 gene have shown that the BB genotype is associated with NIDDM. We screened 60 old NIDDM patients with carotid stenosis and 107 old healthy controls for 1267 HSP70-2 polymorphism in order to establish if an association with plaque frailty exists. Different genotypic distributions were observed between patients and healthy controls. An increased relative risk was associated with the B allele (p = 0.0107; odds ratio = 1.861). HSP70-2, IL-6, IFN-gamma, TNF-alpha gene expressions within the plaques and serum levels of triglyceride, total cholesterol and LDL cholesterol were tested from patients stratified according to their B+ (AB and BB) and B- (AA) genotypes. Plaque morphology (soft or fibrous-calcified) and the incidence of cerebral ischaemia were also assessed. B+ patients showed increased HSP70-2, IL-6, IFN-gamma, TNF-alpha and dyslipidemia as compared to B- carriers. The frequency of soft plaques increased in B+ in comparison to B- patients (67% versus 13%; odds ratio 13.0, p = 0.0006). A higher frequency of cerebral ischaemia (ictus or transient ischaemic attack (TIA)) was present in B+ than in B- genotype (53% versus 20%; odds ratio 4.57, p < 0.05) Hence, 1267 HSP70-2 polymorphism may be of use in identifying B+ NIDDM patients at risk for carotid plaque rupture and cerebral ischaemia.
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Affiliation(s)
- Robertina Giacconi
- Immunolgy Ctr. (Sect. Nutrition, Immunity and Ageing) Res. Department INRCA, Via Birarelli 8, 60121 Ancona, Italy
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Balog A, Gyulai Z, Boros LG, Farkas G, Takács T, Lonovics J, Mándi Y. Polymorphism of the TNF-alpha, HSP70-2, and CD14 genes increases susceptibility to severe acute pancreatitis. Pancreas 2005; 30:e46-50. [PMID: 15714129 DOI: 10.1097/01.mpa.0000153329.92686.ac] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Proinflammatory cytokines and heat shock proteins play fundamental roles in the pathogenesis of acute pancreatitis. We studied whether polymorphisms of the tumor necrosis factor alpha (TNF-alpha), heat shock protein 70-2 (HSP70-2), and CD14 genes correlate with the severity of acute pancreatitis. METHODS Patients with acute pancreatitis (n = 77) of mixed etiology were grouped according to the severity of the disease on the basis of the Ranson scores. Healthy blood donors (n = 71) served as controls. TNF-alpha-308 polymorphism was determined by NcoI RFLP, HSP70-2 polymorphism by PstI RFLP, and CD14-159 polymorphism by melting point analysis. RESULTS There was a moderate increase in the frequency of the TNF1/2 genotype (P = 0.046) among patients with severe acute pancreatitis as compared with those with mild disease. A more significant increase was observed in the frequency of the HSP70-2 G allele between groups of patients with mild or severe pancreatitis (18.9% vs. 53%; P < 0.001). Conversely, the A/A genotype was markedly more frequent among the patients with mild pancreatitis (P < 0.0001). There was no significant correlation between CD14-159 promoter polymorphism and the severity of pancreatitis. CONCLUSION High frequencies of the HSP70-2 G and the TNF-alpha -308 A alleles were associated with risk of severe acute pancreatitis. Genotype assessments may be important prognostic tools to predict disease severity and the course of acute pancreatitis. Therefore, genotype assessments may also be used to guide treatment or to identify risk populations for severe acute pancreatitis.
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Affiliation(s)
- Attila Balog
- Department of Medical Microbiology and Immunology, Faculty of Medicine, University of Szeged, Szeged, Hungary
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Zhou F, Wang F, Li F, Yuan J, Zeng H, Wei Q, Tanguay RM, Wu T. Association of hsp70-2 and hsp-hom gene polymorphisms with risk of acute high-altitude illness in a Chinese population. Cell Stress Chaperones 2005; 10:349-56. [PMID: 16333988 PMCID: PMC1283878 DOI: 10.1379/csc-156.1] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2005] [Accepted: 09/08/2005] [Indexed: 11/24/2022] Open
Abstract
High-altitude illness (HAI) is a potentially fatal condition involving genetic and environmental components. Accumulated experimental evidence suggests that heat shock proteins (Hsps), especially HSP70, can protect cells and organs against different types of damage. We investigated whether genetic variation in constitutive and inducible hsp70 genes could be associated with risk of HAI. The association between polymorphisms of the HSP70 family genes and risk of HAI was determined in 56 patients with HAI and in 100 matched controls by genotyping for the polymorphisms +190 G/C, +1267 A/G, 2437 G/C in the hsp70-1, hsp70-2, and hsp70-hom genes by using polymerase chain reaction-restriction fragment length polymorphism. The data showed that there was no statistically significant difference in the genotype and allele distributions of hsp70-1, in hsp70-2 allele and hsp70-2 A/A and A/B genotypes, and in allele distribution of hsp70-hom among patients with HAI and controls (chi2 test, P > 0.05). However, there was a significantly higher frequency of hsp70-2 B/B and hsp70-hom A/A and B/B genotypes and a significantly lower frequency of the hsp70-hom A/B genotype in the HAI patients compared with the controls (P < 0.05 for all). The risk associated with the hsp70-2 B/B and hsp70-hom A/A, A/B, and B/B genotypes were 4.017 (95% CI = 1.496-10.781; P = 0.004), 2.434 (95% CI = 1.184-5.003; P = 0.012), 0.299 (95% CI = 0.148-0.602, P = 0.001), and 5.880 (95% CI =1.145-30.196, P = 0.026), respectively. Our results suggest that individuals with hsp70-2 B/B and hsp70-hom A/B and B/B genotypes may be more susceptible to HAI, whereas those with hsp70-hom A/B genotype may be tolerant to HAI. Further studies in individuals of different age and sex are warranted to elucidate the underlying mechanisms of this association and the possible functions of different genotypes of hsp70-2 and hsp70-hom under hypoxic stress.
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Affiliation(s)
- Fang Zhou
- Institute of Occupational Medicine, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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14
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Gibbons GH, Liew CC, Goodarzi MO, Rotter JI, Hsueh WA, Siragy HM, Pratt R, Dzau VJ. Genetic markers: progress and potential for cardiovascular disease. Circulation 2004; 109:IV47-58. [PMID: 15226250 DOI: 10.1161/01.cir.0000133440.86427.26] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Gary H Gibbons
- Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, Ga, USA
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15
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Fekete A, Treszl A, Tóth-Heyn P, Vannay A, Tordai A, Tulassay T, Vásárhelyi B. Association between heat shock protein 72 gene polymorphism and acute renal failure in premature neonates. Pediatr Res 2003; 54:452-5. [PMID: 12840151 DOI: 10.1203/01.pdr.0000083024.05819.47] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Heat shock protein (HSP)70 plays an important role in the ischemic tolerance of fetal and neonatal kidney. We have investigated the association of genetic polymorphisms of the constitutive HSP70 (HSP73) and the inducible HSP70 (HSP72) encoding genes with the risk of acute renal failure (ARF) in very low birth weight (VLBW) neonates. Thirty-seven VLBW neonates with ARF and 93 VLBW neonates without ARF were enrolled in the study. The presence of HSP72 (1267)AG and HSP73 (190)GC polymorphism was analyzed from dried blood samples by PCR and restriction length fragment polymorphism. Allelic prevalence was related to reference values obtained in 131 healthy adults. Stepwise binary logistic regression was applied to determine the independent effect of the established risk factors to the development of ARF. Sixteen of 37 VLBW neonates with ARF and 18 of 93 VLBW neonates without ARF were homozygous for HSP72 (1267)G allele (p </= 0.01). The association between HSP72 (1267)GG genotype and ARF remained at the level of significance (p = 0.05) when it was adjusted for established risk factors of neonatal ARF. Prevalence of HSP72 (1267)GG was also higher in VLBW neonates than in the reference population (p < 0.05) and in VLBW neonates with infant respiratory distress syndrome than in those without (p < 0.001). We found that in VLBW neonates carrying HSP72 (1267)GG genetic variation, which is associated with low inducibility of HSP72, the risk of ARF was increased. Therefore, VLBW neonates with (1267)GG might express less HSP72 and might be less protected against ARF.
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Affiliation(s)
- Andrea Fekete
- Research Laboratory for Pediatrics and Nephrology of the Hungarian Academy of Sciences, 1083 Budapest, Hungary.
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Abstract
The cutaneous forms of lupus erythematosus (LE) are true complex traits, susceptibility to which is determined by multiple factors. Good evidence exists for both genetic and environmental components to this complexity. Several different experimental techniques have found the strongest genetic associations with cutaneous LE to include sequence polymorphisms of genes encoding HLA, TNF-alpha and complement molecules, particularly in anti-Ro-positive patients. Abnormal expression of multiple other cytokines, adhesion molecules and cellular proteins (such as Ro and La) points towards a range of candidate genes that are currently being examined in cutaneous LE. Combinations of specific polymorphisms of genes encoding these immunoregulatory molecules may determine individual susceptibility to LE.
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Affiliation(s)
- T P Millard
- Department of Photobiology, St John's Institute of Dermatology, St Thomas' Hospital, London, UK.
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17
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Bolla M, Wood N, Humphries S. Rapid determination of apolipoprotein E genotype using a heteroduplex generator. J Lipid Res 1999. [DOI: 10.1016/s0022-2275(20)32109-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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