Objective To summarize the experience of diagnosis and treatment of lower gastrointestinal bleeding caused by small intestinal vascular malformation .Methods 12 patients with lower gastrointetinal bleeding caused by small intestinal vascular malformation were retrospectively reviewed.Results ⑴Repeated intermittent hematochezia were the most common cases in our date of lower gastrointestinal bleeding caused by small intestinal vascular malformation.⑵The most common course of disease was 2～3 years.⑶Bleeding was halted after operation in 100% cases and no one relapse.Conclusions ⑴Active bleeding period should be evaluated firstly by angiography and prepare to emergency operation.⑵By treatment combined with enteroscopy during operation could help to diagnose.⑶Surgical operation is the most effective treatment for bleeding of small intestinal vascular malformation.

Object Effects of Bacillus licheniformis (Weigmann) Chester C2-13 on antioxidative activities of dried flower of Carthamus tinctorius L. (DFCT) were studied. Methods Clearance of hydroxyl radical was determined by 1, 10-phenanthroline-Fe~(2+) oxidative assay. The hemolysis of red blood cells, MDA production in hematocytolysis liver homogenate were measured by colorimetric assay. Products of fermentation were analyzed by HPLC. Results C2-13 can increase greatly antioxidative activities of DFCT. Using HPLC assay, it is observed that the fermentation and processing by the strain can improve the effective components of DFCT. Conclusion Some effective components of DFCT may be biotransformed by C2-13, so that the antioxidative activities are promoted.

BACKGROUND: Post-stroke depression(PSD) is the most common emotional change after stroke. It has high morbidity, which also seriously affects the near and long term functional prognosis of the patients and affects the quality of life (QOL) of the patients during convalescence.OBJECTIVE: To investigate the impacts of integrated rehabilitative therapy on post-stroke depression and ability of daily life(ADL) through interventional therapy in patients with post-stroke depression.DESIGN: A randomized controlled study with the patients as subjects basedon diagnosis.SETTING: Department of cadre in a university hospital.PARTICIPANTS: Sixty cases including 34 males and 26 females hospitalized in the Department of Cadre of the General Hospital Affiliated to Tianjing Medical University between October 2001 and March 2002 were randomly divided into rehabilitation group( n = 30) and control group( n = 30).INTERVENTIONS: Patients of rehabilitation group received both routine medication and integrated rehabilitative therapy (cinesiotherapy + psychotherapy) while the patients of control group only received routine medication(decompression, improving cerebral circulation and symptomatic therapy) . Barthel index(BI) and Hamilton rating scale for depression(HAMD)were used to assess the patients at admission, the 3rd month and the 6th month during the course of the disease.MAIN OUTCOME MEASURES: BI and HAMD score at the 3rd and 6thmonth in patients of rehabilitation group and control group.RESULTS: BI at 3rd month or 6th month was (68.0 ± 2.9) or (70.0 ± 3.5)in patients of rehabilitation group, which was significantly higher than (62.0±3.3) at 3rd month and (65.0±3.8) at 6th month in patients of control group( P ＜ 0. 001, 0. 01) . HAMD score at 3rd month or 6th month was(8.9 ±4.9) or(8.7 ±5.1) in patients of rehabilitation group, which was significantly lower than(15.2 ±5.6) at 3rd month or(14. 9 ±8. 1) at 6th month in patients of control group ( P ＜ 0.05).CONCLUSION: Integrated rehabilitative therapy can effectively improve the ADL of patients with post-stroke depression and relieve depression.

Objective To develop the numerical method for the steady and unsteady wet steam condensing flow in turbine stage. Methods An Eulerian/Eulerian numerical model is used to describe the spontaneous condensation flow in the steam turbine. For the steady condensing flow computations, the mixing plane model was used. For the unsteady condensing flow computations, the sliding mesh method was used to simulate the rotor-stator interactions. Results The numerical results showed the obvious differences between non-condensing and condensing flows. The results also showed the unsteadiness effect due to rotor-stator interactions had a deep influence on the formation and growth process of water droplets. Conclusion The numerical methods presented in this paper are valid for the condensing flow in the turbine stage.

Objective To explore the antineoplastic parvovirus H-1 induced cell death signaling pathways and their possible mechanisms in gastric carcinoma cells. Methods By using RT-PCR method, the mRNA expressional changes of mitogen-activated protein kinase (MAPK) signaling transduction pathway related genes were measured in gastric adenocarcinoma HGC27 cells infected by H-1 virus. Results The RT-PCR amplification results displayed that 48 h after HGC-27 cells were infected by H-1 virus, the expression of CREB was increased, the expression of ERK1, STAT2, p38-?, MEK2, ?-RAF and MTK1 were remarkably decreased, however, the expression of JNK2, ETS and ERK2 had no apparently change. Conclusions The cytotoxic effects of parvovirus H-1 might affect the gene expression involved in MAPK signal transduction pathway in gastric carcinoma HGC27 cells. It indicates that H-1 virus might interfere with specific cellular signal transduction pathways of gastric carcinoma cell to induce cell death. In conclusion, it was considered that modified and reconstructed parvovirus H-1 would be a very valuable tool in the anti-tumor study.

Objective To analyze the therapeutic effect of rehabilitation intervention for patients with post-stroke depression. Methods Sixty patients with post-stroke depression were divided randomly into a rehabilitation group(n=30) and a control group(n=30). Those in the former group were intervened with comprehensive rehabilitation programs (mainly the exercise and psychotherapy), while those in the later group only the ordinary medical drugs. 3～6 months later, therapeutic effect was assessed according to the recorded Barthel index and the HAMD scores, and a comparison was carried out between the two groups. Results In comparison with the control group, the therapeutic effect was significantly better in the rehabilitation group, as shown by significant increase of Barthel index scores at 3 months (P

Objective To investigate the sensitivities of distinct gastric cancer cells to parvovirus H-1 induced cytotoxicity and its possible mechanisms. Methods Six distinct differentiated gastric cancer cell lines were employed in this study, including HGC27 (undifferentiated), BGC823(undifferentiated), MKN45(poor differentiated), AGS (poor differentiated), SGC7901(moderate differentiated) and MKN28 (well differentiated). The cell cycle distributions were measured by flow cytometry. The differential sensitivities of six distinct gastric cancer cells after H-1 virus infection were detected by MTT analysis. The RT-PCR was employed to detect viral NS-1 gene expression in all six gastric cancer cell lines. Results The S phase ratios of HGC27, BGC823, MKN45, AGS, SGC7901 and MKN28 were 24.72%, 30.15%, 27.10%, 29.03%, 31.82% and 33.73% respectively. HGC27 cells were sensitive to H-1 virus induced cytotoxicity followed by SGC7901 cells. MKN45 and AGS cells were moderately sensitive. MKN28 cells were insensitive. However, BGC823 cells were resistant to H-1 virus induced cytotoxicity. The expressions of viral NS-1 were higher in HGC27, BGC823, MKN45 and SGC7901 cells, whilst NS-1 gene expressions were lower in AGS and MKN28 cells. Conclusions The sensitivities of distinct gastric cancer cells to H-1 virus induced cytotoxicity could be markedly different. In general, the poorly differentiated cells showed an enhanced sensitivity to H-1 virus attack as compared to well differentiated ones. The enhanced sensitivity of poorly-versus well-differentiated gastric cancer cells to H-1 virus is due to at least in part, to the enhanced capacity of the former cells for NS-1 protein production and accumulation. The undifferentiated BGC823 cells were resistant to H-1 virus triggered cytotoxicity. It may further verify that not all the tumor cells were sensitive to H-1 virus lytic effects.

Objective:To investigate the infuluence of electroacupuncture on blood lipid and liver function in nonclcoholic fatty liver rats. Methods:Thirty-three male SD rats were randomly divided into 2 groups:normal control group (n=11,fed with normal food) and non-alcoholic fatty liver model group (NAFLD) (n=23,fed with high-fat food). Eight weeks later 1 rats were randomly selected from the normal control group and 2 rats were randomly selected from the NAFLD group and were killed to undergo pathological examination of the liver. When the establishment of experimental model of NAFLD rats was confi rmed the remaining 20 NAFLD rats were sublishment into 2 equal subgroups:NAFLD control group to be fed continuously with high-fat food ,acupuncture treatment group (to fed continuously with high-fat food). Take Zusanli,Hong Leong,Sanyinjiao,Taichong points,electroacupuncture -spacing parameters,2Hz frequency,intensity 4mV to the appropriate vibrating slightly lower limb. By the end of the 12th week,all rats were killed to isolate the samples of test the levels of serum total cholesterol (TC),serum triglyceride (TG),high-density lipoprotein cholesterol (HDL-L),low-density lipoprotein cholesterol (LDL-CH),liver index,Valley serum ALT(ALT),Aspartate aminotransferase (AST),and liver pathology. Results:Treatment of rats --serum total cholesterol (TC),serum triglyceride (TG),low-density lipoprotein cholesterol (LDL-CH),liver index,Valley serum ALT(ALT),Aspartate aminotransferase (AST) were significantly lower than those of NAFLD control group (P

Objective To observe the specific immune responses and the protection against P815 mastocytoma cells stably expressing HBV surface antigen in H-2 d mice after DNA immunization of HBV surface antigen gene (pCR3.1-S). Methods The immunization was performed by intramuscular injection of DNA vaccine (pCR3.1-S). P815-HBV-S was inoculated subcutaneously into mice three weeks after DNA immunization. The tumor growth was measured every five days. HBsAg specific cytotoxic T lymphocyte (CTL) activity was measured by 51 Chromiunm release assay. Results HBV DNA vaccine can evidently inhibit the tumor growth, prolong the survival period and improve the survival rate in mice. Meanwhile, HBsAg specific CTL activity was obviously increased after DNA immunization. Conclusions The results show that the DNA vaccine, pCR3.1-S, has strong antigenecity in cellular immunity and has marked killing effect on HBV infected cells in vivo. DNA vaccine against HBV may be useful for both prophylactic and therapeutic purposes.

Amyloid fibrils belong to a category of abnormal aggregations of natural proteins, which are closely related to many human diseases. Recently, some critical peptide sequences have been extensively studied for clarifying the molecular mechanism of natural proteins to form amyloid fibrils. In the present study, we designed a short peptide GGAAVV (GAV-6) composed of hydrophobic amino acids glycine (G), alanine (A) and valine (V) and studied its ability to form amyloid fibrils. As characterized by atomic force microscopy (AFM) and dynamic light scattering (DLS), the peptide could self-assemble into smooth nanofibers without branches. Congo red staining/binding and thioflavin-T (ThT) binding experiments show that the nanofibers formed by GAV-6 shared identical properties with typical amyloid fibrils. These results show that the designed peptide GAV-6 could self-assemble into typical amyloid fibrils, which might make it a useful model molecule to clarify the mechanism for the formation of amyloid fibrils in the future.
Amino Acid Sequence ; Amyloid ; chemistry ; Humans ; Microscopy, Atomic Force ; Models, Molecular ; Nanofibers ; chemistry ; Peptides ; chemistry