Nowadays,statin has been one of the key medications for the prevention and treatment of cardiovascular and cerebrovascular diseases.Over the past years,lost of studies related to statins in preventing and treat ischemic cerebrovascular disease have been carried out.For clinical practice,this paper reviewed the clinical evidences of statins on primary prevention and secondary prevention for ischemic stroke as well as the safety of statins.

To cultivate the high quality graduate is the aim of discipline construction as well as the graduate's cultivation.By raising graduate's humanities knowledge,establishing the "?" type knowledge structure,we want to make them grasp commonly used computer knowledge,improve their English proficiency,take part in the international lab cross-talking,hold the laboratory conference regularly,and encourage the graduate to present their articles to international biomedicine periodical.All these contribute to construct the platform which helps the graduate students grow into the innovated talent.

OBJECTIVE: Functional deterioration of the nerves following cerebral hemorrhage is associated with cerebral hemorrhage-induced brain edema and involves multiple pathways of nerve injuries, now recognized as a complex pathophysiological process involving the interactions between multiple factors. Elucidation of the mechanisms of nervous system injury after cerebral hemorrhage may provide theoretical basis for implementing effective rehabilitative interventions for cerebral hemorrhage.DATA SOURCES: A computer-based search in the Medline database for related articles published between January 1991 and December 2003 was conducted using the combinations of the searching words of "emorrhagic stroke, cerebral hemorrhage, brain edema, and nervous system injury", with the language of the articles limited to English. A search in Wanfang database was also conducted using the key words of "cerebral hemorrhage, brain edema, nervous system injury" (in Chinese) for related Chinese articles published between January 2004 and January 2005.STUDY SELECTION: Total 85 original articles were selected after elimination of the irrelevant ones. Inclusion criteria: reports of animal experiments and clinical trials on cerebral hemorrhage following brain edema and mechanisms of nervous system injury were selected, particularly those focusing on brain edema after cerebral hemorrhage.DATA EXTRACTION: Of the 85 articles, 22 were found closely related to the subject concerned and 18 were indirectly relevant. Nine were excluded for duplicated reports, so that 31 articles were finally selected for analysis.DATA SYNTHESIS: Analysis of the literature suggested that secondary edema around the hematoma and nervous system injury were important indicators for poor prognosis of patients with cerebral hemorrhage. Multiple factors participated in the process of secondary brain edema and nerve injuries,such as the hydrostatic pressure during formation of the hematoma and clot retraction, activation of blood coagulation cascade, generation of thrombin,erythrocytolysis and the toxicity of hemoglobin, the activation of the complement system, space-occupying effects, rupture of the blood-brain barrier,secondary ischemia around the hematoma, inflammatory reaction of the neurons around hematoma and cell apoptosis.CONCLUSION: Effective protective interventions for brain edema after cerebral hemorrhage and complex pathophysiological changes may attenuate nervous system injuries following cerebral hemorrhage and improve the prognosis of functional recovery.

Leukoaraiosis (LA) is a group of clinical syndrome caused by multiple etiologies.It belongs to one of the types of cerebral small vessel diseases.Studies have shown that LA usually can lead to different degrees of cognitive impairment.In recent years,with the development of imaging techniques,the studies about correlation between maging findings and cognitive impairment in LA patients and cognitive impairment are increasing gradually and have drawn some new conclusions.And thus,the understanding of the clinical significance of LA has been further deepened.This article mainly reviews the advances in research on the correlation between imaging findings and cognitive impairment in LA patients.

Quantitative calibration strategy as an essential issue in laser ablation ICP-MS plays an important role for the guarantee of analytical accuracy.In this study, uncertainties of reference values in current available glass certified reference materials (NIST, MPI-DING and USGS) as well as the matrix effect among them were systematically evaluated.The results illustrated that NIST610 was better than other reference materials from aspect of reference value uncertainty.The matrix effect among NIST, MPI-DING and USGS reference materials was insignificant under our experimental conditions.A quantification strategy based on two reference materials (NIST610 and StHs6/80-G) and normalization to 100% (w/w) was proposed to avoid the insufficiency of single reference material strategy, which suffered the very low content and large uncertainty for some elements.The comparision of ML3B-G results obtained from three quantification strategies (single reference material NIST610, single reference material StHs6/80-G and two refterence materials) illustrated that the proposed strategy improved the analytical accuracy.Three reference materials (BCR-2G, CGSG-2 and KL-2G) were quantified with the proposed strategy, and almost all data matched well with reference value, meanwhile the data reported here could supplement the reference value database.

Objective: To evaluate the cognitive dysfunction of patients with vascular dementia (VD) Method: A cross-sectiona l investigation was done in 32 pat ients with VD and 26 normal control All of them were tested with MMSE, ADL (ac t ivity of daily life), DS (digit span), and HAMD Results: (1) M MSE result, compared with control, patient's time orientation (244?119/47 3?0 60, t=915, p

Objective To explore the risk factors and their prognostic value in Chinese female patients with ischemic stroke.Methods A total of 4 442 female patients with ischemic stroke were enrolled in the study from the Chinese National Stroke Registry System.According to the modified Rankin Scale (mRS) score,patients were divided into the group A (with good outcomes,mRS =0-2) and the group B (with bad outcomes,mRS =3-6),with the follow-up for 12 months.The risk factors were collected at month 3 and month 12,including age,family history,body mass index (BMI),hypertension,diabetes mellitus (DM),hyperlipidemia,atrial fibrillation (AF),coronary heart disease (CHD),smoking and moderate or heavy alcohol intake.The multivariate logistic regression was performed to determine the prognostic value of those risk factors.Results Patients in the group B were older than those in the group A [month 3:(71.3 ± 11.4) years oldvs (65.5±11.8) years old and month 12:(71.9±11.3) years old vs (65.1 ±11.6)years old,with both P ＜0.001].Patients in the group B were found to have higher ratio of BMI ＜25 kg/m2(66.3％ vs 62.0％,P =0.006;66.6％ vs 61.8％,P =0.002) and more likely to have the history of DM (27.0％ vs 23.3％,26.6％ vs 23.6％,respectively; both P ＜ 0.05),A F (18.0％ vs 6.2％,17.9％ vs 6.3％,respectively; both P ＜0.001) and CHD (21.4％ vs 14.4％,21.8％ vs 14.2％,respectively; both P ＜ 0.001) than those in the group A.The multivariate logistic regression analysis showed that women's age (OR =1.04,1.05,95％ CI 1.03-1.05,1.04-1.06,respectively),the histories of DM (both OR =1.35,95％ CI 1.15-1.58,respectively) and AF (OR =2.91,2.84,95％ CI 2.33-3.64,2.27-3.56,respectively) were significantly associated with the bad outcomes at month 3 and month 12.The history of CHD was associated with the bad outcomes at month 12 (OR =1.20,95％ CI 1.00-1.43),while the history of hyperlipidemia might improve the outcome at month 12 (OR =0.75,95％ CI 0.60-0.94).Conclusions The risk factors may have different prognostic value in female patients with ischemic stroke.The diagnosis and treatment for DM,AF and CHD may be helpful to improve the prognosis in Chinese female patients with ischemic stroke.

Objective To investigate the effects of recombinant tissue-type plasminogen activator (rt-PA) combined with mild hypothermia on the hemorrhagic transformation after cerebral ischemia-reperfusion within or out of the therapeutic time window in rats.Methods The focal cerebral ischemia-reperfusion 3 and 4 hours models of rats were established by middle cerebral artery occlusion (MCAO) 3 or 4 hours. The rats were randomly divided into the normal saline group (group NS), normothermia rt-PA group (group rt-PA), rt-PA combined with hypothermia group (group rt-PA +HT), and sham-operation group. Brain mild hypothermia was achieved after ischemia reperfusion and maintained 3 hours. Rats were sacrificed 24 h after ischemia reperfusion, and the amount of bleeding was measured.Results The amount of bleeding significantly reduced in the group rt-PA+HT compared with group rt-PA, which obviously increased in the group rt-PA compared with group NS ( P<0.05); there was a significant difference between rt-PA groups MCAO 3 hours and 4 hours ( P<0.05).Conclusion rt-PA can increase hemorrhagic transformation volume; hemorrhagic transformation volume is higher if treated by rt-PA within 3 h therapeutic time window than treated beyond the time window; mild hypothermia should possibly prevent the development of hemorrhagic transformation and prolong the therapeutic time window of thrombolytic intervention in ischemic stroke.

Objective To explore the relationship between lesion sites of stroke and swallowing function. Methods Ischemic stroke patients consecutively admitted into the stroke unit were screened in this study. The new and previous lesion sites of stroke, dysphagia and aspiration under videofluoroscopy (VF) were recorded and their relation was analyzed. Results 211 patients were included and 169 patients had completed the MRI and VF examination. 159 patients had dysphagia and 94 had aspiration under VF. 72 patients (9 missing) were found disorder in oral phase and 150 in pharyngeal phase. There was no significantly difference in dysphagia under VF and in aspiration among different lesion sites (P>0.05). Patients with stroke in medulla tended to happen aspiration (P=0.056). Stroke sites above the tentorium of cerebellum (P=0.028) or above medulla (P=0.005) may cause disorder in oral phase. Conclusion The stroke injury in brain cortex, white matter, brainstem and cerebellum or hemisphere could lead to dysphagia and aspiration. The injury of medulla may cause aspiration. Lesion of brain hemisphere or above the medulla could result disorder in oral phase of swallowing.

Objective To evaluate the potential effects of RS504393, CC chemokine receptor (CCR) 2b and CCR1 antagonist, on LPS-induced acute lung injury (ALI) and to investigate the underlying mechanisms. Method A549 cell line was stimulated with LPS (10 μg/mL) and then treated with RS504393 (10 μg/mL) for 6 hours. ALI model was established with intranasal administration of LPS (5 mg/kg) in C57BL/6J mice. RS504393 (5 mg/kg) was administered 30 min before LPS dripped nasally. IL-8, IL-1β, plasminogen activator inhibitor (PAI)-l,monocyte chemoattractant protein (MCP)-2,and the expressions of CCR1 and CCR2b were studied by using Realtime-RT-PCR, ELISA and cyto-flowmetry. Results In A549 cell line treated with RS504393,the expressions of CCR1, CCR2b and IL-8 were significantly inhibited after LPS stimulation. In rats with LPS-induced ALI, treatment with RS504393 significantly protected mice against lung injury by attenuating influx of leukocytes and protein into bronchoalveolar space and by lessening pathological changes of lung. Treatment with RS504393 down-regulated IL-1β and PAI-1 expressions in bronchoal veolar lavage fluid (BALF) and lungs at mRNA and protein levels along with up-regulation MCP-2 expression compared to rats of vehicle-treated groups. Conclusions CCR2b and CCR1 play pivotal roles in the development of ALl,and RS504393 as a antagonist can halt the development of ALI.