Objective To investigate effects of cerebral isehemic preconditioning on neurological function,in- farct volume,and the expression of caspase-3 in brain issue after brain ischemia again,and to investigate the brain protection mechanism produced by cerebral ischemia preconditioning.Methods 48 healthy male Sprague-Dawley (SD)rats(weighted 200～250g)were randomly divided into 2 groups:ischemia group(n=24),ischemia precondi- tioning group(namely preconditioning group,n=24).Each group was divided into 4 subgroups according to 6h,1d, 2d,4d after ischemia again.Results At the same point of time after ischemia,neurological deficit in preconditioning group was much less than that in ischemia group,the difference was significant(P

Objective To discuss the value of MSCT in diagnosis of left pulmonary artery sling (LPAS) with tracheobronchial anomaly.Methods MSCT was performed in 9 children with LPAS and tracheobronchial anomalies,CT findings were analyzed retrospectively. Results According to the Wells classification of LPAS,which includes two main types and two subtypes,there were 2 patients of type 1A,3 patients of type 1 B,2 patients of type 2A and 2 patients of type 2B.All of children had tracheobronchial stenosis.Local tracheobronchial stenosis was found in 4 patients ( all were type 1 ) and long tracheobronchial stenosis in 5 patients ( 1 patient with type 1 and 4 patients with type 2).Conclusions MSCT is an ideal imaging modality for simultaneously identifying LPAS and associated tracheobronchial anomalies.The Wells classification is very useful for operation planning.

Objective To assess the value of the multi-slice CT based OMENS classification in diagnosing pediatric hemifacial microsomia. Methods Eleven patients including 9 boys and 2 girls with suspicion of hemifacial microsomia underwent MSCT. Multi-planar reformation (MPR), maximum intensity projection (MIP) and volume-rendered image (VR) reconstruction were performed at the workstation. The malformations of the facial structures were analyzed respectively with the OMENS classification system.Results On CT reconstruction images, hemifacial microsomia in all 11 patients was demonstrated clearly.Nine patients were found to have unilateral lesion, including 6 on the left side and 3 on the right side. Two patients presented bilateral involvement with various severity degree. The OMENS classification system can be perfectly used to analyze the deformities. Respectively, the orbit and zygomatic arch deformity involved 8 sides in 8 cases, the mandible deformity involved 10 sides in 9 cases, the auricular deformity involved 13 sides in 11 cases, and the soft tissue deformity involved 12 sides in 11 cases. Conclusion MSCT based OMENS classification system can make accurate and comprehensive evaluation of the morphological changes in hemifacial microsomia, which provide strong imaging evidence to clinical evaluation.

Acupuncture Therapy ; Adolescent ; Craniocerebral Trauma ; complications ; Humans ; Male ; Optic Nerve Injuries ; etiology ; physiopathology ; therapy ; Vision, Ocular

OBJECTIVETo observe the effect of Modified Yiqi Chutan Recipe (MYCR) on blood flow perfusion in treating mid-late stage non-small cell lung cancer (NSCLC) patients by using multislice CT perfusion (CTP) , and to assess the relationship between each CTP parameter and the prognosis as well.

METHODSTotally 87 mid-late stage NSCLC patients were randomly assigned to the treatment group (44 cases, Shenyi Capsule + MYCR +chemotherapy) and the control group (43 cases, chemotherapy alone) in the ratio of 1:1. And 21 days consisted of 1 therapeutic course, 4 courses in total. All of them underwent CTP of primary tumor and routine thoracic CT examination (plain CT and enhancement CT) 3 times (before therapy, after 2 and 4 cycles). CT findings were analyzed for tumor size and perfusion parameters [blood flow (BF), blood volume (BV), permeability surface (PS), mean transit time (MTT), and time to peak (TP) before and after treatment, and relationship between perfusion parameters and prognosis was also assessed.

RESULTSIn 87 cases, 7 dropped out and 80 cases were available, 40 in the treatment group and 40 in the control group. (1) The relief rate was 47.5% (19/40) and the total stable rate was 77.5% (31/40) in the treatment group, and they were 40.0% (16/40) and 65.0% (26/40) in the control group, with no statistical difference between the two groups (χ² = 0.672, 1.227; P > 0.05). (2) Compared with before treatment group in the same group, BF and PS decreased, and MTT increased in the two groups after 2 and 4 courses (P < 0.05); BE and PS decreased, and MTT increased in the control group after 2 courses (P < 0.05). Compared with the control group after 4 courses, BE decreased more significantly in the treatment group (P < 0.05). (3) After 4 courses, all patients were assigned to the remission group (35 cases) and the non-remission group (45 cases) according to the RECIST standard. Compared with before treatment in the same group, BF, BF, and PS all decreased, and MTT increased in the remission group after treatment (all P < 0.05); BF increased in the non-remission group after treatment (P < 0.05). (4) All patients were assigned to the BE increase group (34 cases) and the BE decrease group (46 cases) according to changed BE values after treatment. Results showed the mean survival rate was 246 days in the BF increase group (the 1-year accumulative survival rate being 13.0%) and 387 days in the BE decrease group (the 1-year accumulative survival rate being 53.1%). The life span was prolonged and the 1-year accumulative survival rate was elevated in the BE increase group, with statistical difference as compared with the BE decrease group (χ² = 19.057, P < 0.01).

CONCLUSIONSShenyi Capsule plus MYCR could reduce BE in mid-late stage NSCLC patients , improve vascular permeability, showing better synergistic effect with chemotherapy. CTP could not only reflect the change of tumor size, but also reflect vascular function of the tumor. Meanwhile, changes of CTP parameters were closely associated with prognosis. Patients with post-treatment decreased BE value had better prognosis and longer life span.

Capillary Permeability ; drug effects ; Carcinoma, Non-Small-Cell Lung ; diagnosis ; drug therapy ; Drugs, Chinese Herbal ; therapeutic use ; Humans ; Phytotherapy ; Tomography, X-Ray Computed

Objective To observe expression changes of the telomeric repeat binding factor 2 (TRF2) in mouse cortical neurons during aging and its biological significance.Methods TRF2 expression in cortical neurons of young (2 months) and old (20 months) C57BL/6J mice were tested by Western blot and real time PCR.pcDNA-TRF2 was transfected in embryonal cortical neurons.Neurons viability was determined by MTT after exposure to camptothecin for 16 h.Results TRF2 expression decreased significantly in cortical neurons in old mice than that in young mice.After exposure to camptothecin for 16 h,(75.4±2.6) ％ of pcDNA TRF2 transfected neurons were viable and the transfection rate was higher in pcDNA-TRF2 transfected neurons than in control transfected neurons [(32.6 ± 9.3) ％] (t =22.85,P ＜ 0.05).Conclusions TRF2 expression decreases significantly in aging mouse,downregulation of TRF2 may participate in neurons aging,and TRF2 overexpression may be a potential therapeutic target against neurodegeneration.

Objective:To investigate the effect of body mass index (BMI) on setup errors in intensity-modulated radiotherapy for cervical cancer and explore the optimal position for patients with different BMI without taking into account the rotation error and the changes in target area and adjacent organs.Methods:A total of 90 patients were divided into three groups according to their BMI: light weight group (BMI≤18.4 kg/m 2), normal weight group (18.5 kg/m 2≤BMI≤23.9 kg/m 2) and overweight group (BMI≥24 kg/m 2). Thirty patients were assigned into each group including15 patients in the supine position and 15 patients in the prone position. In total, 2 250 sets of CBCT scan data of 90 patients were obtained. The setup errors were recorded and analyzed in each group. The margins of the optimal position were calculated according to the formula of M PTV=2.5+ 0.7. Results:When BMI was not taken into account, there was no significant difference in the setup errors between the supine and prone positions in the x, y and z directions (all P>0.05). When BMI was considered, the setup error in the supine position were significantly smaller than those in the prone position in the x and y directions in the light weight group, whereas there was no significant difference in the setup errors between the supine and prone positions in the z direction ( P>0.05). The corresponding M PTV in the supine position was 4.76, 4.27 and 5.73 mm, respectively. In the normal weight group, there was no significant difference in the setup errors between the supine and prone positions in the x and y directions (both P>0.05), whereas the setup error in the prone position was smaller than that in the supine position in the z direction. The corresponding M PTV in the prone position were 6.42, 10.21 and 4.91 mm, respectively. In the overweight group, there was no significant difference in the setup errors between the supine and prone positions in the x and z directions (all P>0.05), whereas the setup error in the prone position was smaller than that in the supine position in the y direction. The corresponding M PTV in the prone position were 5.88, 5.26 and 5.32 mm, respectively. Conclusions:Without taking into account the rotation error and the changes in target area and adjacent organs, when the BMI≤18.4, the supine position is recommended. When the BMI≥18.5, it is better to choose the prone position.

[Objective]To explore effect of polypeptides from chlamys farreri(PCF) on human umbilical cord blood cells(HUCBCs) differentiation in vitro,the effects of the extract on protein tyrosine kinase(PTKs) was studied in vitro.[Method]Getting human umbilical cord blood cells and cultured with the PCF at dilution concentrations of 1:1600,1:3200,1:6400,1:12800 nerve growth factor(NGF) was used as positive control and DMEM as negative one.After 48,72,96 h,the HUCBCs was cultured and the activity of protein tyrosine kinase(PTK) was examined by ATP in corporation test using PtK assay system.[Result]HUCBCs in the negative control group had no PTK activity,but that of positive control group was detected significantly.The PTK activity in extract of polypeptides from chlamys farreri groups increased at 48h(P

Objective To investigate the clinical presentation, hormonal profile and metabolic abnormalities in subgroups of women with PCOS and explore a reasonable classification for PCOS. Methods A cross-sectional study of 192 women with PCOS (14-38 years of age) was performed. The patients were divided into 3 groups of A, B and C according to the revised 2003 consensus on diagnostic criteria and also divided into 2 groups according to body mass index(BMI) : group A(n=110), long term anovulation, clinical and biochemical evidence of high androgen level, ovary enlargement with its size larger than 10 ml or number of small follicles of 2-9 mm ≥12 under ultrasound with exclusion of other diseases caused by high androgen;group B(n=46), long term anovulation, clinical and biochemical evidence of high androgen level;group C(n=36), long term anovulation, ovary enlargement with its size larger than 10 ml or number of small follicles of 2-9 mm ≥12 under ultrasound with exclusion of other disease caused by high androgen; obesity PCOS group (OB-PCOS,n=70),BMI≥25(kg/m~2); no obesity PCOS group (NOB-PCOS,n=122), BMI

For the purpose of detecting the polymorphism of the human eighth complement component(C8A),an allele specific amplification method were established for detecting two alleles of C8A based on a nucleotide exchange of the C8? cDNA sequence.100 DNA blood samples from unrelated individuals of Han population in Chengdu were typed by this method.The result of comparison with the data of protein typing of the same samples using SDS PAGE method proved that the described method is efficient,correct and reliable for C8A genotypes.This methtod is valuable for further application in population genetic study and forensic science practice.