Association of rs12122341 polymorphism with the development of acute cerebrovascular event

Purpose

To study SNP rs12122341 (C> G) with development of Acute Cerebrovascular Event in the patients with cardiovascular pathology and risk factors of its development who are representatives of the east Siberian population.

Material and methods

260 patients with Acute Cerebrovascular Event participated in a research (age [57.0; 51.0–62.0]) and 272 patients of control group (age [55.0; 51.0–62.0].). Among the patients who transferred Acute Cerebrovascular Event, 157 men and 103 women. The control group included 170 men and 102 women. Inspection of the main group included: collecting complaints, anamnesis, clinical examination, computer tomography of a brain, electrocardiography, echo, ultrasonic of arteries, daily monitoring of arterial blood pressure and cardiac rhythm, analysis of a coagulant system of blood. Patients of the main group had the following cardiovascular pathology and risk factors: arterial hypertension, supraventricular tachycardia, dislipidemiya, atherosclerosis brachiocephalic of arteries, disturbances of a system of a hemostasis. The control group is examined within the international HAPIEE project. The molecular and genetic research was conducted by PCR method in real time. Statistical processing of material was carried out with use of set of the Statistica for Windows 7.0, Excel and SPSS 22 application programs.

Results

As a result of a research gender differences in functions of genotypes of SNP rs12122341 are set (C> G). So, for males risk factor of Acute Cerebrovascular Event is the genotype of CC, for female persons – CG genotype. In the general group of patients with Acute Cerebrovascular Event and also in subgroups of patients with different cardiovascular pathology and risk factors of statistically significant differences in frequencies of genotypes and alleles it is not revealed.

Conclusion

A genotype of the CC SNP rs12122341 (C> G) the risk of development of Acute Cerebrovascular Event in males in comparison with genotypes of CG and GG (p=0.009 raises; OR 1.83, 95% of CI: 1.16–2.91). The genotype of CG performs protective function concerning development of Acute Cerebrovascular Event in males. At female persons risk factor of development of Acute Cerebrovascular Event is CG genotype.

Funding Acknowledgement

Type of funding sources: None.

Association of rs3025058 polymorphism with the development of acute cerebrovascular event

Purpose

To study SNP rs3025058 association (5a/6a) with development of Acute Cerebrovascular Event in the patients with cardiovascular pathology and risk factors of its development who are representatives of the east Siberian population.

Material and methods

260 patients with Acute Cerebrovascular Event participated in a research (age [57.0; 51.0–62.0]) and 272 patients of control group (age [55.0; 51.0–62.0].). Among the patients who transferred Acute Cerebrovascular Event, 157 men and 103 women. The control group included 170 men and 102 women. Inspection of the main group included: collecting complaints, anamnesis, clinical examination, computer tomography of a brain, electrocardiography, echo, ultrasonic of arteries, daily monitoring of arterial blood pressure and cardiac rhythm, analysis of a coagulant system of blood. Patients of the main group had the following cardiovascular pathology and risk factors: arterial hypertension, supraventricular tachycardia, dislipidemiya, atherosclerosis brachiocephalic of arteries, disturbances of a system of a hemostasis. The control group is examined within the international HAPIEE project. The molecular and genetic research was conducted by PCR method in real time. Statistical processing of material was carried out with use of set of the Statistica for Windows 7.0, Excel and SPSS 22 application programs.

Results

In all analyzed groups and subgroups of patients statistically significant connection between a genotype of 5a/5a and an allele of 5a and in subgroup of women with Acute Cerebrovascular Event, subgroups of patients with AG and hypercoagulation of significant associations of polymorphism rs3025058 (5a/6a) with Acute Cerebrovascular Eventis not revealed.

Conclusion

A genotype 5a/5a and an allele 5a SNP rs3025058 (5a/6a) increase risk of development of an Acute Cerebrovascular Event in persons of the east Siberian population, including with such risk factors as atherosclerosis the brachiocephalic of arteries and a dislipidemiya.

Funding Acknowledgement

Type of funding sources: None.

Association of rs10507391 polymorphism with the development of acute cerebrovascular event

Purpose

To study SNP rs10507391 association (A> T) with development of Acute Cerebrovascular Event in the patients with cardiovascular pathology and risk factors of its development who are representatives of the east Siberian population.

Material and methods

260 patients with Acute Cerebrovascular Event participated in a research (age [57.0; 51.0–62.0]) and 272 patients of control group (age [55.0; 51.0–62.0].). Among the patients who transferred Acute Cerebrovascular Event, 157 men and 103 women. The control group included 170 men and 102 women. Inspection of the main group included: collecting complaints, anamnesis, clinical examination, computer tomography of a brain, electrocardiography, echo, ultrasonic of arteries, daily monitoring of arterial blood pressure and cardiac rhythm, analysis of a coagulant system of blood. Patients of the main group had the following cardiovascular pathology and risk factors: arterial hypertension, supraventricular tachycardia, dislipidemiya, atherosclerosis brachiocephalic of arteries, disturbances of a system of a hemostasis. The control group is examined within the international HAPIEE project. The molecular and genetic research was conducted by PCR method in real time. Statistical processing of material was carried out with use of set of the Statistica for Windows 7.0, Excel and SPSS 22 application programs.

Results

When studying SNP rs10507391 association (A> T) connection between a rare genotype of a TT and an allele of T and the increased risk of Acute Cerebrovascular Event is established with development of Acute Cerebrovascular Event in all analyzed groups and subgroups of patients.

Conclusion

A genotype of a TT and an allele of T of SNP rs10507391 (A> T) increases risk of development of an acute disorder of cerebral circulation in patients regardless of the previous cardiovascular pathology and risk factors, including at patients with arterial hypertension, supraventricular tachyarrhythmias, atherosclerosis the brachiocephalic of arteries, disturbance of lipidic exchange and the system of a hemostasis.

Funding Acknowledgement

Type of funding sources: None.

Association of 12204590 polymorphism with the development of acute cerebrovascular event

Purpose

To study SNP rs12204590 (T > A) with development of Acute Cerebrovascular Event in the patients with cardiovascular pathology and risk factors of its development who are representatives of the east Siberian population.

Material and methods

260 patients with Acute Cerebrovascular Event participated in a research (age [57.0; 51.0–62.0]) and 272 patients of control group (age [55.0; 51.0–62.0].). Among the patients who transferred Acute Cerebrovascular Event, 157 men and 103 women. The control group included 170 men and 102 women. Inspection of the main group included: collecting complaints, anamnesis, clinical examination, computer tomography of a brain, electrocardiography, echo, ultrasonic of arteries, daily monitoring of arterial blood pressure and cardiac rhythm, analysis of a coagulant system of blood. Patients of the main group had the following cardiovascular pathology and risk factors: arterial hypertension, supraventricular tachycardia, dislipidemiya, atherosclerosis brachiocephalic of arteries, disturbances of a system of a hemostasis. The control group is examined within the international HAPIEE project. The molecular and genetic research was conducted by PCR method in real time. Statistical processing of material was carried out with use of set of the Statistica for Windows 7.0, Excel and SPSS 22 application programs.

Results

The connection of the genotype of TA SNP rs12204590 (T > A) with the development of Acute Cerebrovascular Event in a general group of patients was confirmed, but no statistically significant associations were obtained when patients were divided into subgroups depending on cardiovascular pathology and risk factors.

Conclusion

The genotype of TA SNP rs12204590 (T > A), compared to the genotypes of TT and AA, reduces the risk of developing Acute Cerebrovascular Event, including in patients with arterial hypertension. The genotype of AA SNP rs12204590 (T > A) increases the risk of developing Acute Cerebrovascular Event in males.

Funding Acknowledgement

Type of funding sources: None.

Association of rs11196288 polymorphism with the development of acute cerebrovascular event

Purpose

To study SNP rs11196288 (A> G) with development of Acute Cerebrovascular Event in the patients with cardiovascular pathology and risk factors of its development who are representatives of the east Siberian population.

Material and methods

260 patients with Acute Cerebrovascular Event participated in a research (age [57.0; 51.0–62.0]) and 272 patients of control group (age [55.0; 51.0–62.0].). Among the patients who transferred Acute Cerebrovascular Event, 157 men and 103 women. The control group included 170 men and 102 women. Inspection of the main group included: collecting complaints, anamnesis, clinical examination, computer tomography of a brain, electrocardiography, echo, ultrasonic of arteries, daily monitoring of arterial blood pressure and cardiac rhythm, analysis of a coagulant system of blood. Patients of the main group had the following cardiovascular pathology and risk factors: arterial hypertension, supraventricular tachycardia, dislipidemiya, atherosclerosis brachiocephalic of arteries, disturbances of a system of a hemostasis. The control group is examined within the international HAPIEE project. The molecular and genetic research was conducted by PCR method in real time. Statistical processing of material was carried out with use of set of the Statistica for Windows 7.0, Excel and SPSS 22 application programs.

Results

As a result of the conducted research in one of the analyzed groups and subgroups statistically significant associations of genotypes and alleles of polymorphism of rs11196288 were not revealed (A> G) with Acute Cerebrovascular Event.

Conclusion

SNP rs11196288 (A> G) has no significant effect on development of Acute Cerebrovascular Event in persons of the east Siberian population regardless of the previous cardiovascular pathology and risk factors.

Funding Acknowledgement

Type of funding sources: None.

Putative role of Brugada syndrome genes in familial atrial fibrillation

OBJECTIVE

Familial atrial fibrillation (FAF), a not uncommon arrhythmia of the atrium, is characterized by heritability, early onset and absence of other heart defects. The molecular and genetic basis is still not completely clear and genetic diagnosis cannot be achieved in about 90% of patients. In this study, we present the results of genetic screening by next generation sequencing in affected Russian families.

PATIENTS AND METHODS

Sixty subjects (18 probands and 42 relatives) with a clinical diagnosis of FAF were enrolled in the study. Since AF frequently associates with other cardiomyopathies, we included all genes that were known to be associated with these disorders at the time of our study. All probands were therefore systematically screened for 47 genes selected from the literature.

RESULTS

Our study revealed that seven variants co-segregated with the clinical phenotype in seven families. Interestingly, four out of six genes and three out of seven variants have already been associated with Brugada syndrome in the literature.

CONCLUSIONS

To our knowledge, this is the first report of association of the CACNA1C, CTNNA3, PKP2, ANK2 and SCN10A genes with FAF; it is also the first study in Russian families.

1267Relationship between polymorphism of ADRA2B gene and primary cardiac conduction disorders

Background

Cardiac conduction system (CCS) disease resulting in disrupted conduction and impaired cardiac rhythm is common with significant morbidity and mortality. Current treatment options are limited and rational efforts to develop cell-based and regenerative therapies require knowledge in molecular networks that establish and maintain CCS function. Recent genome-wide association studies (GWAS) have identified numerous loci associated with adult human CCS function, including ADRA2B.  

Materials and methods

A family examination was performed for 71 patients with atrioventricular block (AVB). The control group was formed by 657 patients without clinical ECG manifestations of cardiac diseases. All the examinees underwent ECG, echocardioscopy, electrophysiological examination of the heart. 

Results

by results of research, it has been established that the frequency of carriers of a homozygous genotype on rare allele (DD) among patients with AVB (43.7%±5.9) was higher in comparison with the controls (16%±1.4). The obvious tendency to decrease in carriers of a heterozygous genotype (ID) among patients with AVB (23.9%±5.1) in comparison with the control group (51.1%±2.0) has also been noted. 

Conclusions

 In this work, we revealed association between hereditary disturbances of cardiac conduction and polymorphism of 2-adrenergic receptor gene using clinical - genetic material for the first time.

Genotypes: AVB (n = 71) Control group (n = 657) р n %±m n %±m II 23 32,4 ± 5,6 216 32,9 ± 1,8 р>0,05 ID 17 23,9 ± 5,1 336 51,1 ± 2,0 р<0,001 DD 31 43,7 ± 5,9 105 16 ± 1,4 р<0,001 Allels: Allel I 63 32,9 ± 1,8 768 58,4 ± 1,4 р<0,001 Allels D 79 51,1 ± 2,0 546 41,6 ± 1,4 р<0,001 ОR; 95% CI OR 1,764;1,244-2,5 Genotype II 23 32,4 ± 5,6 216 32,9 ± 1,8 р>0,05 Genotypes ID + DD 48 67,6 ± 5,6 441 67,1 ± 1,8 р>0,05 ОR; 95% CI OR 0,978;0,58-1,65

P336Relationship between polymorphism of NOS3 gene and primary cardiac conduction disorders

Background

 Inherited cardiac conduction diseases (CCD) are rare but are caused by mutations in a myriad of genes. Nitric oxide (NO) derived from endothelial NO synthase (NOS3) is crucial to ССD. Nitric oxide is a reactive free radical which acts as a biologic mediator in several processes, including neurotransmission and cardiac activities. Nitric oxide is synthesized from L-arginine by nitric oxide synthases. Multiple transcript variants encoding different isoforms have been found for this gene. 

Material and methods: 

A family examination was performed for 69 patients with atrioventricular block (AVB). The control group was formed by 220 patients without clinical ECG manifestations of cardiac diseases. All the examinees underwent ECG, echocardioscopy, electrophysiological examination of the heart.

Results

 by results of research, it has been established that the frequency of carriers of a homozygous genotype on rare allele (4b/4b) among patients with AVB (26.1%±5.3) was higher in comparison with the controls (3.2%±1.2). The obvious tendency to decrease in carriers of a homozygous genotype on extended allele (4a/4a) among patients with AVB (47.8%±6.0) in comparison with the control group (71.4%±3.0) has also been noted. 

Conclusions

 In this work we revealed association between hereditary disturbances of cardiac conduction, such as AVB and polymorphism of NOS3 gene, using clinical - genetic material for the first time.

1264Genetic investigation of gap junction protein, alpha 5 of in Russian families with sick sinus syndrome

Background

Connexin 40 (Cx40) is a gap-junction protein expressed in the heart where it mediates the coordinated electrical activation of the atria and ventricular conduction tissues, facilitates cell-to-cell adhesion, and provides pathways for direct intercellular communication. Recent studies have shown that Cx40 null mice have cardiac conduction abnormalities with a very high incidence of cardiac malformations in heterozygous (18%) and homozygous (33%) animals, indicating that Cx40 plays a vital role in cardiomorphogenesis.The process that mediates interactions between an AV node cell and its surroundings that contributes to the process of the AV node cell communicating with a bundle of His cell in cardiac conduction. Encompasses interactions such as signaling or attachment between one cell and another cell, between a cell and an extracellular matrix, or between a cell and any other aspect of its environment. 

Methods

This first study of SSS in a Russian population comprises the clinical and genetic investigation of 30 Russian families, including 67 members. The involvement of the Cx40 genes was investigated. The control group consisted of 615 patients without clinical ECG manifestations of cardiac diseases. All the examinees have undergone ECG, echocardioscopy, electrophysiological examination of the heart. 

Results

We conclude that polymorphism 44AG has mutation-specific effects on Cx40-related SSS. 

Conclusions

Mutation Cx40 impairs gap junction formation at cell-cell interfaces. This is the first demonstration of a germ line mutation in a connexin gene that emphasizes the importance of Cx40 in normal propagation in the specialized conduction system. 

This study provides further evidence of the genetic heterogeneity of SSS.

P337Homozygous polymorphism of gene transcription factor SP4 is associated with hereditary sick sinus syndrome

PURPOSE

The human transcription factor SP4 has functional polymorphism on А80807Т. Our study aimed to confirm that gene transcription factor SP4 polymorphism affect hereditary sick sinus syndrome.

METHODS

Polymerase chain reaction-restriction fragment length polymorphism was used to screen for А80807Т. We genotyped polymorphism А80807Т of the transcription factor SP4 in 109 patients with hereditary sick sinus syndrome, 59 their healthy relatives and 196 control subjects. Structure of primers was as follows: 1) 5’-aaatgaggacaatgaaaagcaca-3’- direct (A)  2)  5’-gcctaagctgctactatttcagtg3’- reverse(A - com) 3)  5’-catttctcaattgcctgctataga-3’ – reverse (T) 4)  5’-actgttgccctttgttgcca-3’ – direct (T - common), 

RESULTS

Patients with the T80807Т genotype shaved associate with hereditary sick sinus syndrome  more frequently than in controls and those with А80807Т and А80807A (P < 0.05). Presence of a T80807Т genotype was associated with an increased odds of having hereditary sick sinus syndrome.

CONCLUSIONS

Our data suggest that patients with the T80807Т genotype of the gene transcription factor SP4 are at increased risk to develop hereditary sick sinus syndrome.

P339Ser49Gly of beta1-adrenergic receptor is associated with hereditary sick sinus syndrome

PURPOSE

The human beta(1)-adrenergic receptor (ADRB1), an important therapeutic target in cardiovascular diseases, has functional polymorphism on Ser49Gly. Our study aimed to confirm that beta(1)-adrenergic receptor polymorphisms affect hereditary sick sinus syndrome. 

METHODS

Polymerase chain reaction-restriction fragment length polymorphism was used to screen for Ser49Gly. We genotyped polymorphism Ser49Gly of the beta1-AR in 108 patients with hereditary sick sinus syndrome, 59 their healthy relatives and 198 control subjects. Structure of primers was as follows: common 5’-TTGCT-GCCTC-CCGCC-AGCGA-TG-3’, wild 5’-TTGCT-GCCTC-CCGCC-AGCGA-CA-3’, mutant 5’-TCACG-CACAG-CACGT-CCACT-GA-3’. 

RESULTS

Patients with the Ser49Gly genotype shaved associat with hereditary sick sinus syndrome more frequently than in controls and those with Ser49Ser and Gly49Gly (P < 0.01).The patients carrying 49 Gly in the ADRB1 gene was significantly higher odds in SSS than in patients without this allele (p < 0.05). Presence of a Gly49 allele was associated with an increased odds of having hereditary sick sinus syndrome. 

CONCLUSIONS

Our data suggest that patients with the Ser49Gly genotype and Gly49 allele of the beta(1)-adrenergic receptor gene are at increased risk to develop hereditary sick sinus syndrome.

The ESC ACCA EAPCI EORP acute coronary syndrome ST-elevation myocardial infarction registry

Aims 

The Acute Cardiac Care Association (ACCA)–European Association of Percutaneous Coronary Intervention (EAPCI) Registry on ST-elevation myocardial infarction (STEMI) of the EurObservational programme (EORP) of the European Society of Cardiology (ESC) registry aimed to determine the current state of the use of reperfusion therapy in ESC member and ESC affiliated countries and the adherence to ESC STEMI guidelines in patients with STEMI.

Methods and results 

Between 1 January 2015 and 31 March 2018, a total of 11 462 patients admitted with an initial diagnosis of STEMI according to the 2012 ESC STEMI guidelines were enrolled. Individual patient data were collected across 196 centres and 29 countries. Among the centres, there were 136 percutaneous coronary intervention centres and 91 with cardiac surgery on-site. The majority of centres (129/196) were part of a STEMI network. The main objective of this study was to describe the demographic, clinical, and angiographic characteristics of patients with STEMI. Other objectives include to assess management patterns and in particular the current use of reperfusion therapies and to evaluate how recommendations of most recent STEMI European guidelines regarding reperfusion therapies and adjunctive pharmacological and non-pharmacological treatments are adopted in clinical practice and how their application can impact on patients’ outcomes. Patients will be followed for 1 year after admission.

Conclusion 

The ESC ACCA-EAPCI EORP ACS STEMI registry is an international registry of care and outcomes of patients hospitalized with STEMI. It will provide insights into the contemporary patient profile, management patterns, and 1-year outcome of patients with STEMI.

TNFR1 -383 A˃C polymorphism and ankylosing spondylitis in a Russian Caucasian population: a preliminary study

The aim of this study was to assess the association between the TNFR1 rs2234649 polymorphism and ankylosing spondylitis susceptibility in a Russian Caucasian population. A total of 41 ankylosing spondylitis patients and 43 healthy controls, matched according to age and sex, were enrolled, and polymerase chain reaction-restriction fragment length polymorphism analysis was used to genotype the rs2234649 variant. We evaluated genotype distributions in the patient and control groups with the chi-square test, and assessed the relationship between genotypes and ankylosing spondylitis using the odds ratio. Our analysis showed that the rs2234649 polymorphism does not increase ankylosing spondylitis risk. In conclusion, the TNFR1 gene polymorphism tested does not appear to be useful for assessing predisposition to this disease or for its diagnosis or prognosis.