Visual processing was an important approach to study brain's higher functions such as information process,study,memory,linguistic process,etc.As a major visual area,occipital region became a research focus,and the authors would talk about the working mechanism of occipital region in brain according to the progresses of neuroscience.

Objective To investigate the prevalence of atherosclerotic renal artery stenosis (ARAS) and risk factors in the atherosclerotic patient population. Methods A prospective study was undertaken during Oct 2002 to Nov 2003. Renal angiography was performed to screen the presence of renal artery disease among patients with variety of atherosclerotic disease, including coronary heart disease, cerebrovascular disease and lower-extremity occlusion disease. Before the angiography, clinical data were collected. Clinical features were compared between ARAS patients and non-ARAS ones in order to explore the risk factors. Results Two hundred and eighteen patients with coronary artery disease, cerebrovascular disease or lower-extremity occlusion disease were enrolled in the study. ARAS (≥50% diameter narrowing by angiography) was identified in 53 (24.3%) of all the patients. Insignificant renal artery stenosis (

Objective To investigate the changes and possible mechanisms of the expressions of metabolic pattern glutamic acid receptor 1(mGluR1) and mGluR3 in hippocampus of juvenile rats submitted to lithium chloride-pilocarpine induced model of epilepsy in 6 h,5 d,60 d after status epilepticus(SE) onset.Methods Seizures were induced in the juvenile rats with lithium and pilocarpine injected intraperito-neally,and behavioral changes and EEG were observed.Eighteen SD juvenile rats with SE were randomly divided into following groups: groupⅠ,in which the rats were killed at 6 h after SE onset(6 h SE),group Ⅱ,in which the animals were killed during the seizure-free period(5 days after SE onset),and group Ⅲ,in which the animals were killed in 60 days after SE induction(period of spontaneous recurrent seizures).And intraperitoneal injection of saline water control groups were divided into: groupⅠa,group Ⅱa and group Ⅲa.The hippocampus tissues after the rats were put to death were collected,the expressions of mGluR1 and mGluR3 mRNA were detected by reverse transcriptase polymerase chain reaction(RT-PCR) in the hippocampus of juvenile rats.Results EEG of rats in group Ⅰ were abnormal,but normal in groupⅡ,and 5(83%) cases of the juvenile rats in group Ⅲ manifested dissemination of sharp waves,spikes or spike wave.The saline control group did not spontaneously attack.There was more significant upregulation of mGluR1 mRNA expression(Pa0.05).The expressional levels of mGluR3 mRNA were upregulated in groupⅠ,group Ⅱ and group Ⅲ(Pa

AIM: To determine the optimal operation method and reduce operative complications by retrospective analysis of outcomes of different operative manipulation for patients with congenital ectopia lentis ( CEL) .
●METHODS: A retrospective study ranged from Jan. 1, 2010 to Jan. 1, 2015 was conducted and 31 CEL patients (57 eyes) treated with different operations were taken into this study. The postoperative outcome, operation related complications was analyzed in terms of different operative manipulations.
● RESULTS: The most common types of CEL are idiopathic and Marfan - related CEL. All eyes ( 98%) benefited from operation except 1 Marchesani syndrome eye concurrent with optic atrophy induced by glaucoma. A total of 3 eyes ( 5%) were treated by phacoemulsification combined with intraocular lens implantation; 8 eyes ( 14%) were treated by phacoemulsification, capsular tension ring implantation combined with intraocular lens implantation, among these 8 eyes, 1 eye was treated with capsular tension ring implantation combined with suture fixation; 39 eyes ( 68%) were treated by lens excision and anterior vitrectomy through corneal incision combined with intraocular lens implantation with suture fixation, among these 39 eyes, 2 eyes were treated with trabeculectomy , but not combined with intraocular lens implantation; 5 eyes ( 9%) were treated by intracapsular cataract extraction and anterior vitrectomy combined with intraocular lens implantation with suture fixation; 2 eyes ( 4%) were treated by lens excision and vitrectomy through pars plana combined with silicon oil injection.
● CONCLUSION: Almost all patients can obtain satisfactory outcomes through various operative manipulations. Phacoemulsification combined with intraocular lens implantation was the first choice for patients with lens dislocation range less than 90°. Phacoemulsification, capsular tension ring implantation combined with intraocular lens implantation was recommended for 90° - 180°, and lens excision and anterior vitrectomy through corneal incision combined with intraocular lens implantation with suture fixation was more suitable for lens dislocation range more than 180°. The appropriate operative methods for different types of CEL patients is the key to success.

0.07 s showed the sensitivity and specificity of 90.1% and 91.4% for those with stenosis ≥75%.Conclusions Color Doppler ultrasonography is a reliable and convenient examination for diagnosing ARAS.

Objective To investigate the effect of Exendin-4 (Ex-4) on ischemia/reperfusion (I/R) injury-induced apoptosis in primary rat cortical neurons and the possible underlying mechanisms.Methods Rat cortical neurons were cultured in vitro,identified by NES-immunohistological staining and immunofluorescence staining,and randomly divided into the following groups: control group,I/R group and Ex-4 group.RT-PCR was performed to establish the existence of active glucagon-like peptide-1 receptor (GLP-1R).ELISA was used to measure the neuronal cytoplasmic cAMP level. MTT was used to detect viability. Fluorescent DNA binding dye Hoechest 33258 was used to reveal apoptosis. C/EBP-homologous protein (CHOP) and growth arrest and DNA-damage-inducible gene 34 (GADD34) mRNAs were detected by real-time PCR. Results The apoptosis rate induced by ischemia 6 h/reperfusion 12 h was 77.0% ±5.3% and was decreased to 27.0% ± 3.5% after Ex-4 ( 0. 4 μg/ml ) treating ( t = 19. 462,P ＜ 0. 01 ).Levels of CHOP and GADD34 mRNA in cortical neurons increased since 4 h and peaked at 12 h after reperfusion. Ex-4 group showed a sharp elevation of levels of CHOP and GADD34 mRNA,peaking at 8 h reperfusion,and then tended to decrease.Conclusions Ex-4 has protective effect against rat cortical neurons injury induced by ischemia/reperfusion. The protective effect may be related to inhibition of ESR-related neuron apoptosis via regulation of unfolded protein response.

Objective To study the differences in clinical characteristics and etiology in bronchopneumonia and lobar pneumonia,and provide the basis for the clinical diagnosis and treatment.Methods A retrospective study was performed on 100 children with lobar pneumonia and 200 children with bronchopneumonia from Dec.2005 to Dec.2007.Antibodies of mycoplasma(MP) and chlamydia(CP) were detected with quantitative enzyme linked immunosorbent assay of serum samples which were collected on addmission.On the second day morning,axenic sputum samples of laryngeapharyngis at pars were collected with onetime asepsis aspiration sputum tube by negative pressure for bacterial culture,and the common seven viruses were detected with direct immunofluorescence,and MP DNA,CP DNA were detected.The results and the clinical data and the characters of sternum were analyzed.Results Lobar pneumonia was more in the elder children,and the features were fever and cough in clinic,absence in physical sign of bellow,and inflammation of one pulmonary lobe in X-ray.Sixty-one percent of childhood lobar pneumonia had MP infection in laboratory examination.But bronchopneumonia was found more in infants and young children,whose features were cough,dyspnea and catarrhus in clinics,wheezy phlegm and stridor in physical sign of bellow,pulmonic shadow of spot and lamellar in X-ray.Bacteria were the most common pathogen in bronchopneumonia.Conclusions Lobar pneumonia was different from bronchopneumonia in age and clinic features and sternum characters of patients,and much more different in etiology.Bacterial infection was important in bronchopneumonia.But in lobar pneumonia,MP infection occupied 61.0%,which was different from traditionaletiology.Moreover,the MP infection rate in infant and young children tend to increase obviously.

Objective To observe the effects of passive movement on the functional outcome after occlusion of the middle artery in the brain and reperfusion, and to explore the molecular mechanisms involved. Methods Cerebral infarction models were established in rats using left middle cerebral artery occlusion ( MCAO). The survivors were randomly divided into a passive movement group and a natural recovery group. There was also a sham-operated group and a normal group. Passive movement treatment (twice a day, twenty min per time) was started at different times after reperfusion. The expression of brain-derived neurotrophic factor (BDNF) and B cell lymphoma/leukemia-2 gene (Bcl-2) were determined using real-time PCRs. Results Expression of BDNF and Bcl-2 was detected a-round the infarction area in both groups. The expression of BDNF and Bcl-2 was highest in the sub-groups where passive movement was begun 24 or 48 h after the operation. Conclusions The expression of BDNF and Bcl-2 in the brain peaks when daily, moderate intensity passive movement is administered beginning 24 to 48 h after reperfusion. Passive movement might have a protective and rehabilitative effect after cerebral infarction.

[Objective]To analyze the clinical features and related risk factors in diabetic retinopathy(DR)and diabetic periph?eral neuropathy(DPN),the two micro-peripheral vascular diseases in newly diagnosed type 2 diabetes mellitus.[Methods]A retro?spective study of 211 cases of newly diagnosed type 2 diabetes mellitus inpatient from 2009 to 2012 ,and compare the two micro-peripheral vascular complications.[Results]The morbidity of DPN was(33.6%),which was higher than that of DR,some cases of DR co-existed with DPN,DR was related with DPN(r=0.158,P=0.020). Age and systolic blood pressure were the common risk factors in DR and DPN by single factor analysis.[Conclusion]It should be paid attention to the screening of both DR and DPN in each age group in newly diagnosed type 2 diabetes mellitus. Except for the control of blood glucose ,the control of the systolic blood pressure is important in the prevention and treatment in the two micro-peripheral vascular diseases.