A strain,WJ-100, with high flocculating activity was screened from activated sludge.Its optimum pH was 6.5 and optimum temperature was 25℃～40℃.Its shaking speed was in the range of 80～240 r/min. Na~ + ,K~ + ,Ca~ 2 + and Fe~ 3+ could accelerate flocculation .Ca~ 2+ did the most obviously.WJ-100 can use various saccharides as good sources of carbon,the flocculating rate reached 99.2%,99.8%,even 100%.The strain could flocculate very well when pH of Kaolin clay suspension was 2.0～10.0.WJ-100 had high flocculation efficiency in the conditions of relatively large pH value, temperature, sources of carbon, shaking speed, mixing speed etc.and showed fine resaerch and application importance.

Objective To investigate the effect of p 38 mitogen-activated protein kinase ( MARK) on expression of matrix metalloproteinase-9(MMP-9) and formation of cerebral edema in rats with cerebral ischemia-reperfusion. Methods Fifty-four SPF male SD rats were randomly divided into sham operation group ( Sham group ) , ischemia-reperfusion group(I/R group) and p38 inhibitor group(SB group).Middle cerebral artery ischemia-reperfusion model was made by modified line plug method .The neurologic exams were assessed at 24 h after reperfusion , Evans Blue method was used tomeasurement Blood-brain barrier`s permeability,the wet-dry ratio was used to measured to estimate cerebral edema ,Western blot was used to detect the expression of phosphorylation p 38 ( p-p38 ) and MMP-9 in the infarct region .Results Compared with Sham group , I/R group had aggravated neurological deficits ( P<0.05 );compared with the I/R group, SB group had alleviate neurological deficits (P<0.05).Compared with Sham group, blood-brain barrier permeability and brain water content of I /R group were significantly increased ( all P<0.05 );compared with the I/R group, blood-brain barrier permeability and brain water content of SB group were significantly decreased(all P<0.05).Compared with Sham group , the expression of p-p38, MMP-9 in margin of ischemia of I/R group were significantly increased (all P<0.05);compared with the I/R group, the expression of p-p38, MMP-9 in margin of ischemia of SB group were significantly decreased (all P<0.05).Conclusions p38 MAPK involved in the formation of brain edema in rats with cerebral ischemia-reperfusion , and its mechanism may be cerebral ischemia-reperfusion activates p38MAPK,and it make the expression of MMP-9 in margin of ischemia up-regulated,damaging blood-brain barrier permeability ,leading to cerebral edema .

Objective To evaluate the technique of electron microscopic autoradiography in inner ear pathology.Methods The thin sections that was labeled with the thymidine-H3(3H-TdR)were prepared.The labeled specimen were processed for electron microscopic autoradiography(EM-ARG)after treatment with emulsions,development and fixation.Results Incorporation of 3H-TdR was seen over regenerated cells in the experimental papilla in regions of hair cell loss.Conclusion This methocl gives a good localization of the label at the ultrastructural level.

Objective To explore therapeutic effects of acupuncture combined with puerarin injection in the treatment of patients with sudden deafness.Methods 83 patients with sudden deafnss were randomly divided into 2 groups.Control group(n =38) received puersrin injection.Treatment group ( n =45 ) received acupuncture received acupuncture combined with puerarin injection.The effect was compared between the two groups.Results The effective rate of treatment group was 86.7％,and was higher than that of control group(73.6％ ) ( P ＜0.05 ).The hearing function of treatment group was better than that of the control group after treatment ( t =6.21,P ＜ 0.01 ).Conclusion Acupuncture combined with puerarin injection in the treatment of patients with sudden deafness could obtain good curative effect,and it was worth to be spread and studied in the clinic.

Objective To observe the influence of metabolic syndrome(MS)on the left ventricular hypertrophy(LVH)in the essential hypertension(EH)patients.Methods 76 EH patients in middle to advanced ages were selected.Clinical examinations including blood pressure,serum lipid,plasma glucose and body mass index(BMI)were performed.The patients were divided into EH group and essential hypertension with HMS group.The left ventricular posterior wall thickness(LVPW),the left ventricular end diastolic dimension(LVDd),and interventricular septal thickness(IVS)were detected.The left ventricular mass index(LVMI)was calculated after Doppler and 30 controls were observed.Results LVPW,IVS,LVDd,LVMI and the rate of LVH were obviously higher in EH patients than that in the controlS(P＜0.05),and these were also higher in HMS than that in the controls and the EH patients(P＜0.01).Conclusions The degree of the left ventricular hypertrophy in EH patients with metabolic syndrome is more severe than that in EH patients.

TMP. The results suggested that 12D-TMP and 6D-TMP possessed remarkable isotope effects, and that the pyrazine ring of TMP may be responsible for its pharmacodynamics, while the substituted groups might primarily govern its pharma-cokinetics and toxicity. The results also indicated that to study the structure activity relationship of TMP and to modify its chemical structure are very fruitful for the development of TMP analogues of high potency.

Eighty six patients with chronic superficial gastritis, atrophic gastritis and peptic ulcer without autoimmune diseases underwent gastroscopy and biopsy in the gastric antrum and body. Hp was identified by histopathological analysis (Warthin Starry silver stains) and rapid urease test (RUT). Lymphoid tissue was observed by HE stain and immunohistochemistry method. Results showed that Hp infection was found in 68 6% of the patients.Lymphoid follicles were present in 35 6% of the Hp positive patients ,and no lymphoid follicles were found in the Hp negative patients.In six Hp positive patients,Lymphoepithelial lesions were found.Hp infection was closely associated with gastric mucosal lymphoid infiltration,lymphoid follicles and active inflammation( P

Polylactic acid (PLA) and its copolymer are biodegradable polymer materials which are widely used in the medical field because of their excellent mechanical properties, chemical stability, good biocompatibility, and biodegradability. In this paper, research advances in the study on polylactic acid and its application in vascular stent are discussed.

Objective: To detect the abnormal expression of WWOX (WW domain containing oxidoreduc-tase) exons 6-8 at mRNA level in human benign and malignant pleural effusion and to investigate the role of loss of WWOX exons 6-8 in the development of malignant pleural effusion. Methods; Deletion of WWOX ex-ons 6-8 mRNA transcript was analyzed by reverse transcriptase-PCR technology. Results: Of the 56 malig-nant pleural effusion samples, 39 showed loss of WWOX exons 6-8 mRNA transcript (69.6%). This deletion was not detected in the 20 benign pieural effusion samples. Conclusion: WWOX gene may play an important role in the develepment of malignant Neural effusion, Detection of WWOX exons 6-8 mRNA may serve as a candidate molecular target for treatment of malignant pleural effusion and can be a promising index in differen-tial diagnosis of benign and malignant pleural effusion.

Mechanical vascular anastomosis is a technique that uses special vascular anastomotic devices to entirely or partly substitute vascular anastomotic suturing . With the development of manufacture and the emergence of new biomaterials, this technique gained great progress and a large number of research both on preclinical and clinical has been carried out since the 50～60s of last century. The present paper reviewed the development of mechanical vascular anastomosis, analysed their advantages and deficiencies, and pointed out the research trend on these techniques.