Objective To investigate the changes of serum homocysteine ( Hcy),C-reactive protein ( hsCRP) levels in acute cerebral infarction patients and its significance.Methods 64 patients with acute cerebral infarction were selected as research group,and 60 healthy volunteers were selected as control group.Detected the acute cerebral infarction patients after 1d,the first 7d,14d Hcy,hs-CRP,total cholesterol,triglycerides,high density lipoprotein,low density lipoprotein levels and the control group the level of these indicators.Results Of total cholesterol,triglycerides,low density lipoprotein of the study group was higher than those of the control group of high-density lipoprotein(t =3.073,2.874,2.015,all P ＜0.05);after admission ld,treatment of the first 7d,14d showed no significant difference between the two groups ( t =2.223,2.268,all P ＜ 0.05 ).Conclusion Hcy,hs-CRP and the occurrence of acute cerebralinfarction was closely related to the development,and testing to determine the severity of the disease for the guide had important clinical significance.

Objective To investigate the pathologic features of ganglioglioma/gangliocytoma.Methods 19 cases of gangliogliomas and gangliocytomas were studied by HE stain, immunohistochemistry and ultrastructural observation.Results (1) The tumor cells presented widespread, derangement distribution, and conglobation in some regions. (2) The tumor cells were similar with ganglion cell, showing multipolar in feature, and had large, irregular nucleoli. The nucleoli were clear. Some tumor cells were bi-nucleated. (3) Neurogliocytomas were Ⅱ～Ⅲ grades according to the standard published by WHO. (4) Immunoreactions showed GFAP (-), S-100 (+) and Synaptophyein (+) in neoplastic cells. (5) Ultrastructure observation showed cytolysosome, ribosome and rough endoplasmic reticulum in the cytoplasm of the neoplastic cells. Abundant mitochondria and dense neuroendocrine granules were also found in these cells.Conclusions Ganglioglioma/gangliocytoma is a rare tumor of central nervous system. Its diagnosis mainly depends on histopathology, special markers of immunohistochemistry and ultrastructural features. The property of neoplasma is related to the component of neurogliocytoma.

Objective To investigate the clinical and pathological features of meningeal carcinoma.Methods The clinical,cerebrospinal fluid(CSF)and immunocytochemistry data of 142 patients with meningeal carcinoma were analysis retrospectively.Results Clinical manifestation:headache were found in 123 cases(86.62%),and dizziness were found in 19 cases(13.38%).26 cases(18.31%)had fever and 10 cases(7.04%)had poor vision.CSF and immunocytochemistry:in all cases,EMA,CK were positive and CD14,GFAP were negative in all meningeal carcinomatosis.99 cases(69.72%)showed low molecule CK(+)and high molecule CK(-).These were adenocarcinoma.33 cases(23.24%)showed high molecule CK(+)and low molecule CK(-).These were squamous cell carcinoma.10 cases(7.04%)showed both high and low molecule CK(+).These were adenocarcinoma and squamous cell carcinoma.In 67 cases(47.18%),primary cancer were found in lungs.Tumors were found in gastrointestinal tract in 23 cases(16.20%),and in breast in 9 cases(6.34%).Other primary cancers were found in endomertrium(1 case),in ovarium(1 case)and in liver(1 case).In 37 cases(26.06%),primary cancer couldn't been found.Among the 105 cases which primary cancer were found,15 cases were drawn out.In other 90 cases,82(91.11%)died from 3 to 14 months after diagnosis.In the cases no primary cancer were found,6 cases were drawn out.In other 31 cases,28(90.32%)died from 2 to 13 months after diagnosis although primary tumor was not found.Conclusions The headache and dizziness are the main symptom.The immunocytochemistry are important in the diagnosis of the meningeal carcinoma.The prognosis of the cases with meningeal carcinoma is serious whatever found or not found primary cancer.

ObjectiveTo study the effect the low level laser irradiation in nostril combined with the electric stimulation of cerebellum on acute cerebral infarction.Methods88 patients with acute cerebral infarction were randomly divided into two groups, 45 cases in the study group who were accepted level laser irradiation in nostril combined with the electric stimulation of cerebellum and the normal medicine therapy, 43 cases in the control group who were accepted the normal medicine therapy only. The effects of two groups were observed.ResultsThe scores of the nervous function defect degree and the cerebrovascular dynamics indexes of study group were obviously increased (P<0.05 or P<0.01) compared with those before treatment. The indexes of blood viscosity were significantly decreased compared with those before treatment(P<0.01).However, all these indexes of the control group showed no significantly difference before and after treatment. ConclusionThe low level laser irradiation in nostril combined with the electric stimulation of cerebellum therapy is effective on acute cerebral infarction.It is helpful for early comprehensive recovery of motor function of the hemiplegic limbs.

ObjectiveTo investigate the clinical characteristics of patients,risk factors and preventive measures of nosocomial infection in diabetic cerebral infarction(DCI).MethodsThe clinical data of 124 DCI cases with nosocomial infection and 116 DCI cases without nosocomial infection were analyzed retrospectively.ResultsThe clinical characteristics of nosocomial infection in DCI patients were that large cerebral infarction and severity neurological deficits were very common.The patients always had long hospitalization days and poor prognosis.Invasive operation,antibiotic prophylaxis,severity neurological deficits,fasting plasma glucose,urinary albumin,size of cerebral infarction,albumin/globulin and hospitalization days were the risk factors for nosocomial infection in DCI.Among the patients,nosocomial lower respiratory tract infection was the highest(41.5%),the second one was urinary tract infection(28.1%).The case that both sites of infected was common(8.9%).Klebsiella pneumoniae(16.7%),Pseudomonas aeruginosa(15.9%),Candida albicans(12.1%) and Escherichia coli(12.1%) were the most frequent pathogens.ConclusionThe patient's condition of nosocomial infection in DCI is serious and has poor prognosis.Taking preventive measures according to the risk factors can reduce the infection rate.

Objective To investigate the expression of COX-2 and angiogenesis in colorectal carcinoma tissue.Methods The expressions of COX-2 and MVD of 88 cases of colorectal carcinoma and 20cases of control tissue were examined by immunohistochemical staining. Results Compared with normal control,positive expression rates of COX-2(3/20 vs 64/88),and CD34(7/20 vs 74/88)of colorectal carcinoma tissue increased significantly(P＜0.05).MVD in COX-2 positive expressed tissue(63.24-20.4)was higher than that in COX-2 negative expressed tissue(41.2±29.8)(P＜0.01).Conclusion COX-2 is overexpressed in colorectal carcinoma tissue,which may have a strong relationship with MVD.

Objective To explore the molecular and cytogenetic abnormalities in multiple myeloma (MM).Methods The la-boratory data of bone marrow smears were retrospectively analyzed in 61 patients of MM.24 hours short-term culture of bone marrow and R banding technology were performed in 31 patients.Among these patients,10 cases were selected for de-tecting the IgH gene expression by the interval FISH method.Results The proportions of myeloma cells were 0.19~0.94 in bone marrow smears of 61 patients.In 31 patients,25 patients had enough metaphases for analysis,in which 19 cases (71.3%)had abnormal clones,8q24,11q13,13q14 and 17p13 were important structural abnormalities,where 14q32 rear-rangement was the most characteristic abnormal structure,6 patients were detected IgH gene rearrangement.Conclusion Bone marrow smear combined with other laboratory examinations could make the diagnosis of MM,chromosomal abnormali-ties may help to explore the pathogenesis of MM,and provide a theoretical basis for the early diagnosis,treatment and prog-nosis of this disease.

Objective To observe the effects of stress treatment for different time on autonomic behaviors and spatial learning-memory abilities of rats and to investigate the therapeutic efficacy of Chaihu Shugan San(CSS). Methods Seventy-five 8-week-old Wistar rats were randomly divided into blank control group, model control group, and low-, middle-, and high- dose CSS groups, 15 rats in each group. Chronic multi-stress model was set up. The rat body weight in various groups was measured. The autonomic behaviors of rats were observed by open field test, and the abilities of spatial learning-memory of rats were examined by Morris water maze test. Results (1)On modeling day 20, 30, the model control group had lighter body weight than the blank control group (P < 0.01); the middle-, high- dose CSS groups had higher body weight than the model control group (P < 0.05 or P < 0.01) , and the high-dose CSS group had the highest body weight, the difference being insignificant compared with the blank control group (P > 0.05). (2)Open field test results showed as follows:Compared with the blank control group, the total distance and central-area distance were shortened (P < 0.01) and the average speed was decreased(P < 0.01) in the model control group at different modeling time points, the effect being positively correlated with the modeling time; compared with the model control group, the total distance and central-area distance were prolonged(P < 0.05 or P < 0.01) and the average speed was increased (P < 0.05 or P < 0.01) in the low-, middle-, and high- dose CSS groups at different modeling time points, and the therapeutic efficacy of high- dose CSS group was approach to the blank control group. (3)Morris water maze test results showed as follows: Compared with blank control group, the average latent period was prolonged and the times of platform crossing were decreased in the model control group (P < 0.01); compared with the model control group, the average potential time was shortened and the times of platform crossing were increased in the middle- and high-dose CSS groups (P<0.01), the efficacy being not significantly different from that of the blank control group (P > 0.05). Conclusion The chronic stress may decrease the excitability, reduce autonomic behaviors, and injure spatial learning and memory abilities of rats, the effect being positively correlated with the modeling time. And CSS has an effect on improving the above indexes, in particular the middle-and high-dose of CSS.

Objective To invstigate the effect of ultrasound microbubble mediated miRNA delivery on mi-gration,invasion and cloning ability of human hepatoma HepG2 cells. Methods The migration,invasion and col-ony forming ability of HepG2 cells were measured after transfection with antisense miRNA-21/221 and miRNA-199a mimic via the optimal ultrasound microbubble transfection method. Results Compared with the control group ,the migration ,invasion and cloning ability of cells were significantly inhibited after transfection with miRNA mimics(P < 0.05,respectively),especially for miR-199a(relative cell migration rate was 31.05%,the number of invasive cells were 38.67 ± 4.51 and the number of clones were 105.67 ± 5.86). Conclusion The pres-ent study may provide new ideas and clues for gene therapy and prognosis of hepatocell ular carcinoma through ana-lyzing the effect of miRNAs on the biological characteristics of human hepatoma HepG2 cells.

Objective To investigate the mouse liver blood vessel images using phase contrast X-ray imaging with synchrotron radiation. Methods 6 female C57BL/6 mice were randomly divided into two groups, 3 mice in each group. In one group, livers excised after hgated arteries, veins and common bile duct. In another group, iodine infused via the portal vein and drained from inferior vena cave until all the blood in the portal veins and hepatic veins was displaced. After infusion, arteries, veins and common bile duct were ligated and livers were excised. Results Blood vessel images were clearly produced by diffraction enhanced imaging. This method can discriminate vessels down to about 40 μm in diameter without contrast agent. Using a contrasting agent more details could be produced. In one liver lobe, the entire branch of the portal vein could be clearly produced by one by one phase contrast image from the main axial blood vessels of liver lobe to the nine generation of branching. Conclusions Phase contrast imaging has the advantage of good contrast and high spatial resolution. [Key wnrds] Synchrotron radiation; Phase contrast imaging; Diffraction enhanced imaging; Blood vessel; X-rays