ObjectiveTo explore the association of elongase of very long chain fatty acids family member 6 (ELOVL6) gene with increased risk of large-artery atherosclerosis stroke (LAA) in Han Chinese population in Chengdu.MethodsHan Chinese populations in Chengdu, Sichuan were chosen for this study using the case-control design between January 2015 and December 2017. The genotypes and haplotypes of six single nucleotides polymorphisms (SNPs) of ELOVL6 gene (rs3813825, rs17041272, rs4141123, rs9997926, rs6824447, and rs12504538) were analyzed in different genetic models in entire samples, and gene-enviromental interaction analyses were also carried out to get an insight of the risk factors for LAA. At the same time, we also analyzed the gene expression profile in peripheral blood mononuclear cells between groups.ResultsA total of 240 LAA cases and 211 healthy controls were enrolled in this study. All the enrolled subjects presented CC genotype of rs9997926, while the other five SNPs (rs3813825, rs17041272, rs4141123, rs6824447, and rs12504538) were genotyped successfully in all the enrolled subjects. rs17041272 polymorphism and TGTTG haplotype were significantly associated with LAA risk in studied population [CC/(CG+GG): odds ratio (OR)=0.640, 95% confidence interval (CI) (0.423, 0.968), P=0.034; TGTTG: OR=1.776, 95%CI (1.069, 2.951), P=0.024], and the interaction among rs17041272, rs6824447 SNPs and dyslipidemia increased susceptibility to LAA [OR=2.737, 95%CI (1.715, 4.368), P<0.001]. The ELOVL6 gene expression level was higher in LAA subjects (t=−3.167, P=0.003).ConclusionsELOVL6 gene is associated with LAA risk in Han nationality of Chinese population in Chengdu, and the interaction of gene-environmental risk factors could be of great importance in pathophysiology of LAA.
Objective To investigate the risk factors and the prevention and cure methods of ischemic stroke during low intensity anticoagulation therapy after mechanical heart valve replacement. Methods From March 2004 to July 2008，twentythree patients with ischemic stroke after mechanical heart valve replacement had been researched(ischemic stroke group). One hundred and twenty patients who had undergone mechanical heart valve replacement were randomly chosen in the same period as control group. Gender, age, the dose of warfarin , anticoagulation intensity(INR), INR review interval, left atrial diameter and heart rhythm were compared between the two groups, and the risk factors of ischemic stroke were analyzed by logistic regression analysis. Results (1) Patients in ischemic stroke group all discharged from hospital after treatment, and they were followed up for 1 month-3 years after discharged. All the patients’ neurological complications improved obviously, and no recurrent embolism and severe hemorrhage was found. (2) There was no statistical significance between two groups in gender, age and the dose of warfarin（Pgt;0.05）. (3) Nonconditional logistic regression analysis on influence factors showed that atrial fibrillation（P=0.000）, left atrial enlargement（P=0.002）, low anticoagulation intensity（P=0.012） and longtime INR review interval（P=0.047）were the risk factors of ischemic stroke during low intensity anticoagulation therapy after mechanical heart valve replacement. Conclusions (1)The prognosis of ischemic stroke during low intensity anticoagulation therapy after mechanical heart valve replacement is better than that of intracranial hemorrhage, and the occurrence of ischemic stroke is related to many risk factors. (2)The influences of risk factors should be minimized in order to avoid ischemic stroke. (3) Early low intensity anticoagulation therapy is safe and effective for patients with ischemic stroke after heart valve replacement.
Objective To explore the efficacy of endovascular therapy in elderly patients with acute ischemic stroke. Methods The acute ischemic stroke patients who received endovascular therapy between January 2020 and January 2023 were retrospectively enrolled. According to age, patients were divided into the elderly group (≥ 80 years old) and other age groups (<80 years old). The baseline data, green channel data, nerve function deficit, recanalization and complication information were collected, and the patients were followed up. Modified Rankin Scale (mRS) was used to evaluate patients prognosis at 3 months after onset. Score less than or equal to 2 points was defined as good prognosis and over 2 points was defined as poor prognosis. Results A total of 138 patients were included, and 7 patients were lost to follow-up. Finally, 131 patients were included. Among them, there were 50 cases in the elderly group and 81 cases in the other age group. There were statistically significant differences in age, hypertension, atrial fibrillation, and vascular recanalization between the elderly group and the other age group (P<0.05). There was no statistically significant difference in the other baseline data, complications, 3-month prognosis, or mortality between the two groups (P>0.05). The results of multivariate logistic regression analysis showed that the National Institute of Health Stroke Scale score at admission [odds ratio (OR)=1.150, 95% confidence interval (CI) (1.033, 1.281), P=0.011], pulmonary infection [OR=2.933, 95%CI (1.109, 7.758), P=0.030], and hypoproteinemia [OR=3.716, 95%CI (1.226, 11.264), P=0.020] affected the mRS score at 3 months after onset. Conclusions Among the patients with acute ischemic stroke undergoing endovascular therapy, there is no difference in the occurrence of complications or short-term prognosis between elderly patients and other age patients. However, the attention should still be paid to reducing the occurrence of complications in patients, strengthening their nutritional support, and thereby improving their prognosis.
Objective To evaluate the risk factors for cognitive impairment and their interactions in acute ischemic stroke (IS) patients. Methods IS patients admitted to the Department of Neurology, the People’s Hospital of Mianyang between January 2019 and January 2022 were selected. Patients were divided into a cognitive impairment group and a cognitive normal group. The demographic characteristics and clinical data of the subjects were collected, and the traditional risk factors for cognitive impairment were determined by univariate and multivariate logistic regression analysis. The multifactor dimensionality reduction test was used to detect the possible interactions between risk factors. Results A total of 255 patients were included. Among them, 88 cases (34.5%) in the cognitive impairment group and 167 cases (65.5%) in the cognitive normal group. The results of factor logistic regression analysis showed that after adjusting for covariates, big and medium infarction volume, severe IS, moderate to severe carotid artery stenosis as well as high hypersensitive C-reactive protein (hs-CRP) were associated with post-IS cognitive impairment (P<0.05). The cognitive impairment increased by 22.632 times [odds ratio=22.632, 95% confidence interval (5.980, 85.652), P<0.001] in patients with big and medium infarction volume, severe IS and high hs-CRP. Conclusions The cognitive impairment is common in acute IS. Patients with big and medium infarction volume, non-mild stroke, carotid artery stenosis, high hs-CRP, and non-right sided infarction are prone to cognitive impairment, and there are complex interactions among these risk factors.
Objective To systematically review the association between SG13S89 polymorphism inALOX5AP gene and ischemic stroke in Chinese population. Methods Web of Science, PubMed, CNKI, CBM, EMbase and WanFang Data databases were searched to collect studies about the association between SG13S89 polymorphism inALOX5AP gene and ischemic stroke from inception to October 2016. Two researchers independently screened literature, extracted data and evaluated the risk of bias of included studies. The meta-analysis was performed by STATA 12.0. Results A total of 11 case-control studies were included. The results of meta-analysis showed that SG13S89 polymorphism inALOX5AP gene was associated with the risk of ischemic stroke in Chinese (Avs. G: OR=1.192, 95%CI 1.029 to 1.381,P=0.019; AA+AGvs. GG: OR=1.20, 95%CI 1.029 to 1.400,P=0.020; AGvs. GG: OR=1.195, 95%CI 1.022 to 1.397,P=0.025). Conclusion SG13S89 polymorphism inALOX5AP gene may be related to ischemic stroke for Chinese, A allele may be a risk factor.
ObjectiveTo systematically review the efficacy and safety of bone mesenchymal stem cells (BMSCs) transplantation for ischemic stroke. MethodsWe electronically searched PubMed, The Cochrane Library (Issue 12, 2014), EMbase, CBM, CNKI and WanFang Data from inception to December 2014, to collect randomized controlled trials (RCTs) of BMSCs transplantation for ischemic stroke. Two reviewers independently screened literature according to the inclusion and exclusion criteria, extracted data, and assessed the risk of bias of included studies. Then, meta-analysis was performed using RevMan 5.3 software. ResultsA total of 6 RCTs involving 332 patients were included. The results of meta-analysis showed that, the BMSCs transplantation group was superior to the routine treatment group with significant differences in the neurologic deficits score (NIHSS score)(MD=-2.09, 95%CI -2.88 to -1.29, P<0.000 01), motor function (Fugl-Meyer rating scale) (MD=15.25, 95%CI 13.51 to 16.99, P<0.000 01) and daily life ability (Barthel index) (MD=20.04, 95%CI 9.91 to 30.17, P=0.000 1) after 3 months treatment. Two trials reported the adverse events including fever and headache, but the patients relieved in a brief period. ConclusionCurrent evidence shows that BMSCs transplantation can improve the neurological deficits, motor function and daily life ability after ischemic stroke with less adverse effect. No serious adverse events are observed. However, more high quality studies are needed to confirm its effects for lowering rates of death and dependency of BMSC.
Objective To investigate the relationship between age-adjusted Charlson comorbidity index (aCCI) and ischemic stroke in patients with ophthalmic artery occlusion (OAO) or retinal artery occlusion (RAO). MethodsA single center retrospective cohort study. Seventy-four patients with OAO or RAO diagnosed by ophthalmology examination in Shenzhen Second People's Hospital from June 2004 to December 2020 were included in the study. The baseline information of patients were collected and aCCI was used to score the patients’ comorbidity. The outcome was ischemic stroke. The median duration of follow-up was 1 796.5 days. According to the maximum likelihood ratio of the two-piecewise COX regression model and the recursive algorithm, the aCCI inflection point value was determined to be 6, and the patients were divided into low aCCI group (＜6 points) and high aCCI group (≥6 points). A Cox regression model was used to quantify the association between baseline aCCI and ischemic stroke. ResultsAmong the 74 patients, 53 were males and 21 were females, with the mean age of (55.22±14.18) (19-84) years. There were 9 patients of OAO and 65 patients of RAO. The aCCI value ranges from 1 to 10 points, with a median of 3 points. There were 63 patients (85.14%, 63/74) in the low aCCI group and 11 patients (14.86%, 11/74) in the high aCCI group. Since 2 patients could not determine the time from baseline to the occurrence of outcome events, 72 patients were included for Cox regression analysis. The results showed that 16 patients (22.22%, 16/72) had ischemic stroke in the future. The baseline aCCI in the low aCCI group was significantly associated with ischemic stroke [hazard ratio (HR)=1.76, 95% confidence interval (CI) 1.21-2.56, P=0.003], and for every 1 point increase in baseline aCCI, the risk of future ischemic stroke increased by 76% on average. The baseline aCCI in the high aCCI group had no significant correlation with the ischemic stroke (HR=0.66, 95%CI 0.33-1.33, P=0.247). ConclusionsaCCI score is an important prognostic information for patients with OAO or RAO. A higher baseline aCCI score predicts a higher risk of ischemic stroke, and the association has a saturation effect.
Objective To systematically evaluate the influence of alcohol intervention on the outcome of rats and mice with ischemic stroke. Methods Databases including PubMed, EMbase, BIOSIS and CNKI were electronically searched from establishment dates of databases to June 2012 to retrieve animal experiments on the influence of alcohol intervention on the outcome of rats and mice with ischemic stroke. The relevant studies were identified according to the predefined inclusion and exclusion criteria, the data were extracted, and the quality was evaluated. Then meta-analysis was performed using RevMan 5.1 software. Results Eight studies were included. The results of meta-analysis showed that no significant difference was found between the alcohol intervention group and the control group (MD=−6.98%, 95%CI −20.38% to 6.43%, P=0.31). However, compared with the control group, low dose of acute alcohol intervention (less than 2 g/kg) improved the prognosis of ischemic stroke with a significant difference (MD=−22.83%, 95%CI −38.77% to −6.89%, P=0.005), and highly-concentrated of chronic alcohol intervention worsened the cerebral ischemic damage of rats and mice with a significant difference (MD=24.06%, 95%CI 10.54% to 37.58%, P=0.000 5). Conclusion Low dose of acute alcohol intervention (less than 2 g/kg) could improve the prognosis of rats and mice with ischemic stroke which has the potential neuro-protective effects. However, highly-concentrated chronic alcohol intervention could worsen the cerebral ischemic damage. Due to the limitations of the included studies such as publication bias, the influence of alcohol intervention on the outcome of rats and mice with ischemic stroke could be overestimated.
ObjectiveTo construct the comprehensive evaluation indicator system of Chinese patent medicines for ischemic stroke, to determine the weight of indicators, and to provide references for the comprehensive evaluation of the efficacy, safety, and economy of Chinese patent medicines.MethodsTwo rounds of expert consultation by Delphi method were applied to establish the comprehensive evaluation indicator system of Chinese patent medicines for ischemic stroke, and the weight of each indicator was determined by the analytic hierarchy process method.ResultsQuestionnaire recovery rates of 2 rounds were 92.59% and 96.00%, the expert authority coefficient was greater than 0.7, and the coordination coefficients of experts in the total index were 0.224 and 0.370 (P<0.001). A three-level comprehensive evaluation indicator system for Chinese patent medicines for ischemic stroke was established and the three first-level indicators included efficacy, safety, and economy. And there were 15 second-level indicators, and 33 third-level indicators. Through the analytic hierarchy process method, the weights of each first-level indicator were 0.626 4, 0.301 2, and 0.072 4, respectively.ConclusionThe comprehensive evaluation indicator system contains efficacy, safety and economy, and provides a basis for a comprehensive evaluation of Chinese patent medicines for ischemic stroke. The indicator system is of great significance for the design of outcomes for clinical trials of ischemic stroke, the conduction of systematic reviews, and the development of clinical practice guidelines for ischemic stroke patients when selecting study outcomes.
ObjectiveTo investigate the relationship between the level of homocysteine (HCY) and the overall burden of cerebral small vessel disease (CSVD) in patients with ischemic stroke.MethodsA total of 322 patients with first-ever ischemic stroke admitted to the People’s Hospital of Deyang City between January 2016 and December 2017 were enrolled. The patients’ demographic information, clinical information, and serum HCY concentration were collected after admission. The presence or absence of a CSVD was assessed by MRI and the overall burden score for the CSVD was determined. Multivariate logistic regression analysis was used to assess whether serum HCY level was associated with the overall burden of CSVD.ResultsThe median level of HCY was 13.2 μmol/L (inter-quartile range: 4.3 to 22.6 μmol/L). Univariate analysis showed that the difference of HCY levels among patients with different total CSVD scores was statistically significant (F=6.874, P=0.001); Spearman correlation analyses showed that the HCY level grouped by quartiles was correlated to the number of lacunar infarctions (rs=0.267, P=0.001), Fazekas score of white matter lesions (rs=0.122, P=0.042), and enlarged perivascular space (EPV) score (rs=0.319, P=0.001), but was not correlated to cerebral microhemorrhage (rs=−0.010, P=0.869). After multivariate regression analysis to adjust the effects of other factors, compared with the patients with HCY levels in the lowest quartile group, the patients with HCY levels in the highest quartile group were more likely to develop lacunar infarction [odds ratio (OR)=1.892, 95% confidence interval (CI) (1.012, 2.987)], white matter lesions [OR=1.548, 95%CI (1.018, 1.654)], severe EPV [OR=6.347, 95%CI (3.592, 13.978)], and the increase in the CSVD score [OR=2.981, 95%CI (1.974, 5.398)].ConclusionIn patients with ischemic stroke, elevated HCY levels may be associated with the overall burden of the CSVD.