To study the protective effect of local mild hypothermia on the ischemic cerebral tissue, a model of middle cerebral artery(MCA) occlusion was prepared in Wistar rats which were randomly divided into the normal temperature group, FK 506 group, mild hypothermia group and control group. The radioactivity of calcineurin in ischemic cerebral tissue was measured in different time after MCA occlusion. The activity of calcineurin decreased 6 hours after ischemia in the normal temperature group and the FK 506 group, whereas no obvious change of calcineurin activity was observed in the mild hypothermia group, which had a significant difference. It is suggested that the local mild hypothermia treatment may inhibit the change of calcineurin activity in ischemic cerebral tissue, and has a tangible protective effect on the ischemic brain.

BACKGROUND: There is still no satisfactory therapy for thetreatment of cerebral infarction at present. Although sub-hypothermia is effective in the treatment of cerebral infarction, its side effect is relatively more. Local sub-hypothermia might have favorable effects in the treatment of cerebral infarction.OBJECTIVE: To observe the protective effects of local sub-hypothermia on the ischemic brain tissues in rats to further explore its mechanism.DESIGN: A randomized controlled basic study based on the experimental animals.SETTING: Institute of neurology of a university hospital.MATERIALS: The study was conducted in the Animal Laboratory of Neurology, the First College for Clinical Medicine, Harbin Medical University between April 2000 and January 2002. Fifty male Wistar rats(cleanness grade) with a bodyweight of(250 ± 25) g were selected.INTERVENTIONS: Ten rats were randomly selected from the 50 rats and divided into normal group and sham-operation group with 5 rats each. The rest 40 rats were randomly divided into normal temperature cerebral ischemia group and local hypothermia cerebral ischemia group with 20 rats each. Rat cerebral middle-sized arterial ischemia model was established for local sub-hypothermia disposal.MAIN OUTCOME MEASURES: Impacts on cerebral infarction volume,nerve function, and neuron-specific enolase(NSE) of rats in each group.RESULTS: The cerebral infarction volume at 48 hours after embolism in rats was ( 128.95 ± 13.42) or (84.90 ± 11.36) mm3 respectively, nerve function evaluation was( 1.60 ± 0. 24) or (0. 95 ± 0. 17), and serous NSE concentration was(13.55±4.07) or(9.19±3.42) μg/L in either sub-hypothermia group or normal temperature group, which were significantly different from each other.CONCLUSION: Local sub-hypothermia therapy has protective effects on ischemic cerebral neurons.

OBJECTIVE To analyze and evaluate the comsumption of the antibacterial drugs during surgery operation in our hospital objectively.METHODS To carry out statistical analysis of antibacterial drugs from May to Dec in 2007.RESULTS The 93 percent of preventive usage of antibacterial drugs were in 2 hours after operation.The most was cephalosporins.CONCLUSIONS It is important to enhance the education of rational use and supervision.

Objective To investigate the methods and effects of different flaps for repair of high energy injury-induced soft tissue wound of the heel.Methods From January 2002 to June 2012,the patients including 12 males and 9 females aged 18-57 years (mean,32 years) underwent heel soft tissue defect reconstruction.Causes of injury were traffic injury in 11 case and mechanical injury in 10 cases.Dimension of soft tissue defect ranged from 5 cm × 3 cm to 8 cm × 6 cm.Soft-tissue defect was repaired with sural neurovascular flaps at the posterolateral heel in 9 cases (Group A),with posterior tibial artery flaps at the posterolateral heel in 5 cases (Group B),and with medial plantar flaps at the loading area of heel in 7 cases (Group C).Sensory recovery and two point discrimination motion of the ankle joint were observed and compared among groups 12 month after operation.Heel pain was observed during weight bearing and joint activity was evaluated using the visual analogue scale (VAS).Results All the flaps survived,except for one with epidermal necrosis over the distal part,which healed after partial changing medication.Duration of follow-up was 12-24 months.There were no differences in the appearance,texture and contour between the flaps and recipient sites.Flaps showed no ulcer in the weight-bearing area and recovered their protective sense.Patients could walk normally after surgery.At postoperative 1 year,sensory recovery rate of the flaps in Groups A,B and C was 0,20％ and 100％ respectively (P ＜0.01).Appearance of the heel in all groups recovered to almost normal.Cases that could start nil weight-bearing exercise without pain accounted for 8 (89％) in Group A,4 (80％) in Group B,and 6 (86％) in Group C (P ＞ 0.05).While heel pain existed in weight-bearing exercise.Difference in VAS was significant among the three groups (P ＜ 0.05),but ankle range of motion was not (P ＞0.05).Conclusion Medial plantar flaps are suitable for tissue defect of 5-8 cm in length but sural neurovascular flaps and posterior tibial artery flaps should be considered for over 8 cm defect in order to elevate survival rate of the flaps and reconstruct limb function.

Aged ; Antigens, CD20 ; analysis ; Gene Rearrangement ; Humans ; Immunoblastic Lymphadenopathy ; genetics ; metabolism ; pathology ; Immunoglobulin Heavy Chains ; genetics ; Immunohistochemistry ; Lymph Nodes ; metabolism ; pathology ; Lymphoma, T-Cell ; genetics ; metabolism ; pathology ; Male ; Polymerase Chain Reaction ; RNA, Viral ; analysis ; Receptors, Antigen, T-Cell, gamma-delta ; genetics ; Reed-Sternberg Cells ; metabolism ; pathology

Scientific research is the essence of the comprehensive competitiveness in promoting medical development and progress.The county-level public hospitals are to improve all the medical staffs' scientific research awareness and level and the development and progress of clinical medical science by establishing an incentive mechanism and a platform for scientific research and combining the specialties of the hospitals to carry out relative scientific research.

Female ; Humans ; Infant, Newborn ; Maple Syrup Urine Disease ; diagnosis ; therapy

OBJECTIVETo investigate moisture content and hygroscopicity of spray dry powder of Gubi compound's water extract obtained at different spray drying conditions and laying a foundation for spray drying process of Chinese herbal compound preparation.

METHODIn the paper, on the basis of single-factor experiments, the author choose inlet temperature, liquid density, feed rate, air flow rate as investigated factors.

RESULTThe experimental absorption rate-time curve and scanning electron microscopy results showed that under different spray drying conditions the spray-dried powders have different morphology and different adsorption process.

CONCLUSIONAt different spray-dried conditions, the morphology and water content of the powder is different, these differences lead to differences in the adsorption process, at the appropriate inlet temperature and feed rate with a higher sample density and lower air flow rate, in the experimental system the optimum conditions is inlet temperature of 150 degrees C, feed density of 1.05 g x mL(-1), feed rate of 20 mL x min(-1) air flow rate of 30 m3 x h(-1).

Desiccation ; methods ; Drugs, Chinese Herbal ; chemistry ; Hydrophobic and Hydrophilic Interactions ; Particle Size ; Powders ; chemistry ; Temperature ; Water ; analysis ; Wettability

The treatment results of radiofrequency ablation (m) were analyzed in l5 patients with the complicated Supraventricular tachycardia(SVT)． The causes of SVT were dual accessory pathway(AP) in 9 patients, single M with slow-fast atrioventricular junctional reentrant tachycardio (AVJRT) in 5 patients and single AP with slow fast/fast-slow AVJRT in l patient． Results: 24 APs and 6 slow pathways of atrioventricular node were abl a ted． All patients were successful． During the follow-up of 6～48 months, there were no recurrence in l5 patients, also there were no occurrence of atrioventricular block and other complications． Conclusion: Using the proper methods of m of the complicated SVT would have a h igher successful rate, a lower recurrent rate and lower complications．

Antigens ; analysis ; immunology ; Antigens, CD ; analysis ; immunology ; Formaldehyde ; Hot Temperature ; Humans ; Immunohistochemistry ; methods ; Neoplasms ; metabolism ; pathology ; Paraffin Embedding ; methods ; Staining and Labeling ; Tissue Fixation ; methods