Association between rs1801133 polymorphism and risk of adult ischemic stroke: Meta-analysis based on case–control studies

2016 ◽  
Vol 137 ◽  
pp. 17-25 ◽  
Author(s):  
Min Chen ◽  
Ben Yu Mao ◽  
Dan Wang ◽  
Xianglin Cheng ◽  
Chuan Xin Xu
2020 ◽  
Vol 120 (05) ◽  
pp. 815-822
Author(s):  
Artur Słomka ◽  
Mariusz Kowalewski ◽  
Ewa Żekanowska ◽  
Piotr Suwalski ◽  
Roberto Lorusso ◽  
...  

AbstractThe association between blood levels of protein Z (PZ) and risk of ischemic stroke remains poorly understood. We aimed to assess this potential relationship through a meta-analysis of case–control studies. PubMed, Scopus, Web of Science Core Collection, and the Cochrane Library were searched from April 1984 to April 2019. We selected case–control studies comparing PZ levels in adult patients with ischemic stroke and controls without ischemic stroke. Six case–control studies, with a total of 1,011 ischemic stroke patients and 1,128 controls, were included. Patients in the acute phase of ischemic stroke showed significantly higher levels of PZ compared with patients in the convalescent phase (standardized mean difference [SMD]: 0.289 mg/L; 95% confidence interval [CI]: 0.010, 0.569; p = 0.043). No significant differences in PZ levels were found between patients and controls in the acute phase (SMD: −0.059 mg/L; 95% CI: −0.570, 0.452; p = 0.821) or in the convalescent phase of ischemic stroke (SMD: −0.341 mg/L; 95% CI: −0.736, 0.055; p = 0.091). Subgroup analysis indicated that older patients (≥ 50 years old) had lower PZ levels than similarly aged controls. In contrast, when the study groups came from the United States and Australia or Europe no significant differences in PZ levels existed between patients and controls. No association between PZ and ischemic stroke was identified in this meta-analysis. The acute phase of ischemic stroke was associated with higher levels of PZ.


2020 ◽  
Author(s):  
Masoud Keikha ◽  
Mohsen Karbalaei

Abstract Background: Stroke is considered as one of the most concerns in health services facilities worldwide, and occurs in two types, ischemic stroke and hemorrhagic stroke. However, almost the three quarters of stroke cases are ischemic stroke which occur in effect of several risk factors such as hypertension, obesity, atherosclerosis, diabetes mellitus, arteritis, and inflammatory response. In recent years, infectious diseases are considered as one of the most important risk factors of ischemic stroke. In this regard, some bacteria causing the chronic infections in particular Chlamydia pneumonia, Helicobacter pylori, Mycoplasma pneumonia, and Mycobacterium tuberculosis get more attended. Methods: In the present meta-analysis, we studied 50 case-control studies and evaluated potential relevance of these infections with creation and development of ischemic stroke. Results: We surveyed the information of 33,978 participants in several nested case-control studies and demonstrated that bacterial infections can increase the risk of ischemic stroke.Conclusions: In this meta-analysis we demonstrated a meaningful relationship between infection by three bacteria C. pneumoniae, H. pylori, and M. tuberculosis with occurrence of ischemic stroke.


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