Objective To study proloning the surviving time limit of servered skeletal muscle through intermittent ischemia Methods We use canine gracilis as experimental object to observe its changes by"4C" (colour,capillary bleeding,contractility and consistency of muscle),succinic,dehydrogenase and electron microscope Result (1) At normal temperature the ischemic time limit of skeletal muscle was 7 hours (2) At low temperature (4℃),the surviving time limit of skeletal muscle was 15 hours.(3) However, intermittent ischemia, the surviving time limit of skeletal muscle was 25 hours. Conclusion Intermittent ischemia can prolong the surviving time limit of skeletal muscle obviously So, intermittent ischemia may be used as a new better method of servered limb perservation

Objective To explore the effect of direct observation of procedural skills (DOPS) in teaching acupuncture manipulation skills. Methods Sophomores of acupuncture and Tuina spe-ciality were divided into two groups based on their classes, 36 students in experimental group and 31 in control group. In experimental group, DOPS on filiform needling was done twice in the middle and at the end of the semester respectively. In control group, DOPS was done once at the end of semester. The final exam's DOPS score and satisfaction degree of teachers and students concerning the results of the assessment in two groups were compared by independent samples t-test. P<0.05 indicates signifi-cant differences. The teaching effect of DOPS was also evaluated by questionnaire survey of students in experimental group. Results The total score of DOPS (4.26 ±0.24), scores of needle insertion (4.18±0.42), and scores of reinforcing and reducing method (4.03±0.28) in experimental group were higher than those in control group ((4.14±0.25), (4.00±0.29) and (3.87±0.37), P<0.05). The teachers' satisfaction (8.38±0.51) and students' satisfaction (8.47±1.03) concerning the results of the assessment in experimental group were higher than those in control group ((8.05±0.78) and (7.94±1.15), P<0.05). More than 80% of students in experimental group supported the saying of‘DOPS promoting students' skills training and enhancing the ability of handwork ’ . Conclusions DOPS can be used as an effective teaching and examination method and can improve students' skills of acupuncture manipulation.

A total of 267 patients with pressure ulcer were randomly divided into treatment and control groups.All of them underwent traditional debridement.The wounds in treatment group were spreaded with traditional Chinese medicine.According to the results of bacteria culture and drug sensitivity,antimicrobial agents were selected in control group.The observation indices of two groups included pain grade,swelling grade,ulcer area and skin temperature difference.Then the variations of observation indices before and after treatment were examined.In treatment and control groups,the different values of pain grade before and after treatment were 2.1 ± 0.9 and 1.2 ± 0.7,swelling grade 1.3 ± 0.6 and 0.7 ± 0.5,ulcer area 4.7 ± 3.1 and 2.4 ± 2.5 and skin temperature difference 0.12 ± 0.05 and 0.22 ± 0.10 respectively.Treatment group was superior to control group and there was statistical significance (P ＜ 0.05).The effective rates were 95.6％ and 65.4％ and the number of cured patients 86 and 33 cases respectively.And there was statistical significance (P ＜ 0.05).

Objective To explore the effect of flipped classroom in teaching auricular needling method. Methods Sophomores of acupuncture and Tuina speciality were divided into two groups based on classes, with 33 students in experimental group and 30 in control group. In teaching auricular needling method, experimental group adopted flipped classroom by online resources and classroom activities, while control group adopted traditional classroom such as teaching, watching video, demonstration. Post-test score of two groups were compared by independent samples t-test. The teaching effect of flipped classroom was evaluated by questionnaire survey of students in experimental group. Results The total score of auricular needling (88.4±13.91), score of location (55.40±7.34), and score of application (32.00±10.31) in experi-mental group were significantly higher than those in con-trol group (71.48±15.93, 47.55±12.23 and 23.94± 11.97) (P<0.05). Students' satisfaction concerning the flipped classroom in experimental group was up to 90%. Conclusion Flipped classroom can be used in teaching auricular needling method, which can improve teaching quality and promote improvement of students' self-study and communication skills.

Filiform needle acupuncture technique is the core content of needling and moxibustion method. The examination and assessment of filiform needle manipulation are the most important measure for testing the effect of filiform needle acupuncture technique teaching. The establishment of a scientific examination and assessment system of filiform needle manipulation should involve comprehensive examination and assessment contents, definite and detailed evaluation rules and quantified scoring criteria to make the examination and assessment system be able to comprehensively and objectively assess the students' skills of filiform needle manipulation to achieve the purpose of improving the quality of filiform needle acupuncture technique teaching.

Objective To investigate the mechanism by which epidermal growth factor (EGF) accelerates the growth of estrogen-negative breast cancer cell line MDA-MB-435S. Methods Under the effect of EGF cyclin D_1 was measured by Western blot and cell-cycle was assayed by FCM. Results EGF enhanced cyclin D_1 expression. Protein kinase C (PKC) inhibitor Go6976 blocked cyclin D_1 over-expression caused by EGF. In EGF group G_0/G_1 was 69.36%, phase S was 22.77% and PI was 0.31. Differences were all significant compared with control (P

Objective:To investigate the effect of gemcitabine on myeloid derived suppressor cells (MDSC) in the spleen of B lymphoma cell-bearing mice, and the therapeutic effect of gemcitabine combined with intratumoral injection of dendritic cells (DCs) in treatment of large B lymphoma. Methods: BALB/c mice were inoculated subcutaneously with B lymphoma A20 cells; large tumors were formed 30 d after inoculation. Gr-1~+ CD11b~+ MDSC proportion in the spleen was analyzed by flow cytometry before and after gemcitabine treatment. Splenic MDSC sorted by immunomagnetic beads was further treated with gemcitabine, and then the apoptosis of MDSC was examined by Annexin-V/PI staining. Tumor growth and survival time of A20 tumor-bearing mice were observed after treatment with gemcitabine and intratumoral injection of DCs. Results: Splenic Gr-1~+ CD11b~+ MDSC ratio in A20 cell-bearing mice was 10 times higher than that in the normal mice. Gemcitabine induced apoptosis and necrosis of purified MDSC in vitro in a time-dependent manner. The percentage of MDSC in the spleen of A20 tumor-bearing mice was decreased after injection of a single dose of gemcitabine. Gemcit-abine or intratumoral injection of DCs alone inhibited growth of tumor to a certain degree, with the mean survival periods of mice in the gemcitabine, DCs, and untreated groups being (48.8±3.6) d, (47.2±7.4) d, and (38.8±2.2) d, respectively. Gemcitabine chemotherapy combined with intratumoral DC injection resulted in continuous shrink of the tumors, and 60% of the mice survived for more than 90 d. Conclusion: Gemcitabine can effectively eliminate splenic MDSC in tumor-bearing mice. Gemcitabine chemotherapy and DCs immunotherapy can work synergistically in the treat-ment of huge lymphoma. These results provide an experimental basis for the comprehensive chemotherapy and immunotber-apy of relapsed or refractory lymphoma.

AIM:To study testicular pathological change and its pathogenesis. METHODS:Testicular structure of alloxan induced diabetic rats was observed under light microscopy (LM)and transmission electron microscopy(TEM). Activity of superoxide dismutase(SOD),glutathione peroxidase(GSH-PX)，nitric oxide synthase(NOS)and content of malondialdehyde (MDA),nitric oxide(NO) were detected biochemically in testicular homogenate. RESULTS:It is manifestated as atrophy of seminiferous tubule and germinal arrest under LM and expansion of mitochondria and smooth endoplasmic reticulum, cytoplasmic inclusion of sertoli cell under TEM.Activity of SOD, GSH-PX decreased while activity of NOS, content of MDA, NO increased in diabetic rats compared with control one. CONCLUSION:Disturbance of spermatogenesis and damage of sertoli cell are the main morphological change of diabetic testis, lipid peroxidation and NO may be involved in it.

Objective To study the effects of ePTFE-covered stents versus bare stents on portal hemodynamics in portal hypertensive patients receiving TIPS. Methods Sixty patients with portal hypertension underwent TIPS with 8 mm diameter bare stents and ePTFE-covered stent from April 2007 to April 2009. The clinical outcomes were observed after TIPS, and the hemodynamics of potal vein system were studied before and after TIPS and during the follow up using direct portography and color Doppler ultrasound technique. Results TIPS procedures were successful in all patients without major complications. The follow-up of patients with bare stents were (8 ± 4) months and follow-up of ePTFEcovered stents group were (6 ± 4) months. Immediately after the TIPS the portosystemic pressure gradient of the two groups decreased by 60% and 58%, respectively(t =0.79, P >0.05). During the follow-up,portosystemic pressure gradient of bare stents group increased gradually, while that in ePTFE-covered stents group maintained low portosystemic pressure gradient (13.2 ± 1.2) mm Hg vs. (9. 5 ± 2. 9) mm Hg, P =0. 015. The blood velocity and volume of venous return of potal vein system were significantly higher in ePTFE-covered stents group than in bare stents group during the follow-up using color Doppler ultrasound method. The blood velocity and volume of the shunts were significantly higher in covered stents group than in bare stents group after 1 year, (125 ±20) cm/s vs. (88 ±13) cm/s, and (1816 ±380) ml/min vs.(1074 ±239) ml/min, respectively P<0. 01. Conclusions In TIPS patients with ePTFE-covered stents high blood velocity and low portosystemic pressure gradient sustained in contrast with those using bare stents.

Objective To evaluate the efficacy of percutaneous transluminal angioplasty (PTA) in the treatment of transplanted renal artery stenosis (TRAS)-induced renal dysfunction and hypertension. Methods Between July 1998 and January 2007, PTA was performed on 16 patients with RTAS. Color Doppler uhrasonography preceded the intra-arterial angiographic investigation,with false-negative results in 18. 75 % of patients. Sixteen cases of TRAS were examined at 1 st week,6th month and 13 years after PTA. Hypertension improvement was defined as mean arterial pressure decrease of at least 15 % from the pre-PTA value. Graft function was evaluated by SCr levels, and the improvement was defined as a 20% change. Results Angioplasty was technically feasible in 100 %.Sixteen patients with RTAS were cured clinically. During the follow-up period, graft function was improved in 81.25 %, 68. 75 %, 62. 5 %, 56. 25 %, 50 % of patients respectively at 1st week, 6th month and 1-3 years after PTA. The blood pressure was decreased in 62. 5%, 75 %, 75 %,56. 25 %, 50 % of patients respectively, but no patient remained hypotensor medication free.Conclusion PTA improved renal dysfunction and hypertension induced by TRAS, and it is a safe and effective treatment for TRAS.