Objective To study the effect of granulocyte-macrophage colony-stimulating factor(GM-CSF)on angiogenesis of rat with acute myocardial injury induced by isoproterenol(Iso). Methods A total of 60 adult male Wistar rats were randomly divided into 3 groups: normal control group, GM-CSF pretreatment group (GM-CSF group), and lso injury group, 20 rats in each group. GM-CSF group was administered recombinant human(rh)GM-CSF(5.0 μg/kg), through tail intravenous injection once a day for three days. Then the GM-CSF group and the Iso injury group were anesthetized by intraperitoneal injection of lso( 15.0 mg/kg) once a day for three days. The same dose of saline was administered in the same way to the control rats. Ten days after injection, pathological changes of myocardial damage and infarct area were examined by immunohistochemistry. The mRNA expression levels of polypeptide antigen (CD34), vascular endothelial growth factor (VEGF) and its receptor KDR/flk- 1 were measured by RT-PCR. Results The difference of myocardial necrosis area between groups was statistically significant(F=10.07, P < 0.01), in which GM-CSF group[(37.37 ± 12.98)%] was significantly less than Iso injury group[(45.51 ±14.96)%, P < 0.05]. The difference of myocardial neovascularization density index of rats between groups was statistically significant ( F = 25.54, P < 0.05 ), in which GM-CSF group [(3980.05 ± 477.22) No/mm2] was significantly higher than Iso injury group((2605.93±361.49)No/mm2,P<0.01).The differences of myocardial CD34,VEGF,KDR/flk-1 mRNA expression between groups were statistically significant(F=17.83,4.29,4.10,all P<0.01).Compared to Iso mjury group[CD34(23.85±6.06),VEGF(31.80±8.05),KDR/flk-1(30.16±8.01)]were higher in the GM-CSF group[CD34(44.04±10.13),VEGF(49A±11.59),and KDR/flk-1(46A9±7.90),all P<0.01].The expressions of myocardiM VEGF mRNA and its receptor KDR/flk-1 mRNA was positively correlated(r=0.725,R2=0.526,P<0.01).Conclusions GM-CSF prelreatmcnt increases the density ofnew blood vessels in myocardium,and reduces the Iso-induced myocardial injury in rats.

AIM: The distribution of endothelin-1(ET-1) in uterine tube and its source were investigated in order to find out relation between endothelin-1 and function of uterine tube.METHODS: The distribution of endothelin-1 and the expression of ET-1 mRNA in the rabbits uterine tubes were studied using SABC immunohistochemistry and in situ hybridization histochemistry with digoxigenin-labelled rat ET-1 cRNA probe. RESULTS: ET-1 granules with red color were seen in the uterine tube epithelial cells and they were located mainly above the cell nucleus and under the cell surface membrane. Less ET-1 granules were seen in the myometrium of uterine tube. ET-1 mRNA positive hybridization signals with deep blue were distributed in the uterine tube epithelial cells. These signals were strong and dense. They were distributed mainly above the nucleus and near the cell surface membrane. ET-1 mRNA positive hybridization signal was not seen in the myometrium of uterine tube.CONCLUSION: Our results indicate that epithelial cells of rabbit's uterine tube epithelial cells secrete ET-1.

[ ABSTRACT] AIM: To investigate the seroprevalence of neutralizing antibodies to human adenovirus type 5 (AdHu5) , human adenovirus type 26 (AdHu26) and chimpanzee adenovirus type 68 (AdC68) in the patients with chro-nic hepatitis B ( CHB) and the patients with primary liver cancer ( PLC) , and to provide guidance for developing safe and effective biotherapy vectors against CHB and PLC.METHODS:The blood samples from 196 patients with CHB and 193 patients with PLC were examined to assess the presence of neutralizing antibodies against AdHu5, AdHu26 and AdC68 by adenovirus neutralization assays.RESULTS:The seroprevalence rates of neutralizing antibodies to AdHu5, AdHu26 and AdC68 in the CHB patients were 84.7%, 58.2%and 39.8%, respectively.Among the patients with PLC, the prevalence rates of neutralizing antibodies were as follows:AdHu5, 75.1%;AdHu26, 66.8%;AdC68, 32.1%.CONCLUSION:The prevalence rates and titers of neutralizing antibodies against AdC68 were the lowest among the 3 adenoviruses.There-fore, AdC68 serves as more suitable biological therapy vectors for CHB and PLC than AdHu5 and AdHu26.

Objective To investigate the efficacy of skin scraping plus movable cupping in treating neck-shoulder syndrome. Method One hundred and eighty patients with neck-shoulder syndrome were randomly allocated to treatment and control groups. The treatment group received skin scraping plus movable cupping and the control group, acupuncture. Result The total efficacy rate was 88.8% in the treatment group and 77.5% in the control group; there was a statistically significant difference between the two groups (P<0.05). Conclusion Skin scraping plus movable cupping has a good therapeutic effect on neck-shoulder syndrome.

Objective To report the experience of using rectus abdominis musculocutaneous flap after open-window thoracosto- my in managing refractory chronic pleural empyema.Methods From Nov.2004 to Mar.2006,intrathoracic transplantation of the musculocutaneous flap was performed successfully in 4 patients with empyema and fistula after upper lobectomy.The myocutaneous flap was designed in such a way that epigastrica vessels were incorporated.Results The rectus abdominis myocutaneous flap has provided sufficient bulk for tract obliteration.Over a mean follow-up period of 10 months,patients are free from recurrent infections and skin nacrosis.Conclusion Vaseularized museulocutaneous flap may help in healing refractory empyema.

Objective To investigate the clinical efficacy of intermittent liver-nourishing and mind-regulating acupuncture in preventive treatment of migraine. Method One hundred and twenty migraine patients were randomly allocated to treatment and control groups, 60 cases each. The treatment group received intermittent liver-nourishing and mind-regulating acupuncture and the control group took flunarizine hydrochloride capsules orally. The migraine score, the visual analogue scale (VAS) score and the headache severity rating score were recorded in the subjects before treatment and at the end of treatment and the 4-week, 8-week, 12-week, 16-week and 20-week follow-ups. The Self-Rating Anxiety Scale (SAS) score and the Self-Rating Depression Scale (SDS) were recorded before and after treatment.Result After one course of treatment, the total efficacy rate was 98.3% in the treatment group and 89.5% in the control group; there was a statistically significant difference between the two groups (P<0.05). There was a statistically significant difference in the migraine score between before treatment and at the end of treatment in the two groups (P<0.05) and between the two groups at the same follow-ups (P<0.05). There was a statistically significant difference in the VAS score between before treatment and at the end of treatment in the two groups (P<0.05) and between the two groups at the same follow-ups (P<0.05). There were statistically significant differences in the SAS and SDS scores between before treatment and at the end of treatment in the two groups (P<0.05) and between the two groups after treatment (P<0.05).Conclusion Intermittent liver-nourishing and mind-regulating acupuncture has marked efficacy in preventive treatment of migraine. It can increase the total efficacy rate and reduce the number of relapses.

Objective: To investigate the prevalence and influencing factors of electronic cigarette (e-cigarette) use among adolescents in Haidian District, Beijing, so as to provide insights into tobacco control among adolescents. Methods: The students in junior high school, high school and vocational high school were recruited from Haidian District using the stratified cluster random sampling method in October of 2019, and subjects' demographic features and use of e-cigarettes were collected using the Questionnaire for Survey on Tobacco Prevalence among Adolescents in China in 2019. The factors affecting e-cigarette use were identified among adolescents using the multivariable logistic regression analysis. Results: A total of 658 adolescents were investigated, including 315 junior high school students ( 47.87% ), 221 high school students ( 33.59% ), and 122 vocational high school students ( 18.54% ), and there were 261 boys ( 39.66% ), and 397 girls ( 60.34% ). There were 605 students that had heard of electronic cigarettes ( 91.95% ), 63 students that had used e-cigarettes (9.57%), and 23 students with current use of e-cigarettes ( 3.50% ), and there were 39 students that had never used electronic cigarettes but had a tendency of use in the future ( 6.55% ). Multivariable logistic regression analysis identified parental smoking ( OR=2.408, 95%CI: 1.179-4.916 ), close friends' smoking ( OR=3.597, 95%CI: 1.715-7.544 ) and cigarette smoking ( OR=23.029, 95%CI: 11.092-47.812 ) as factors affecting e-cigarette use among adolescents. Conclusions The prevalence of electronic cigarette uses is 9.57% among adolescents in Haidian District, Beijing. Parental smoking, peer smoking and use of cigarettes may facilitate the use of e-cigarettes among adolescents.

To obtain higher potency and specificity, a series of 7-alkoxy analogues of illudalic acid was synthesized on the base of structure-activity relationship (SAR). All of these compounds exhibited submicromolar inhibition of the enzyme when tested against human leukocyte common antigen-related phosphatase (LAR) (for example, for 15e, IC50 = 180 nmol x L(-1)). They represent the most potent small-molecule inhibitors of LAR so far. These analogues also display excellent selectivity for LAR over other protein tyrosine phosphatases (PTPs) except for the highly homologous PTPsigma. The compound 15f is of 120-fold selectivity for LAR versus PTP-1B inhibition. The development of potent enzyme-specific inhibitors is so important that they may serve both as tools to study the role of LAR and as therapeutic agents for treatment of type II diabetes.

Objective To observe the clinical efficacy of heat-sensitive moxibustion plus point-toward-point needling in treating poststroke strephenopodia.Method Eighty patients with poststroke strephenopodia were randomized into a treatment group intervened by heat-sensitive moxibustion plus point-toward-point needling and a control group intervened by rehabilitation, 40 cases in each group. In addition to the basic treatment, the treatment group was given heat-sensitive moxibustion plus point-toward-point needling, and the control group was given rehabilitation treatment. Holden's Functional Ambulation Classification (FAC), Fugl-Meyer Assessment (FMA) of the lower-limb motor function, and Tinetti Gait Assessment (TGA) were adopted for evaluation of the two groups, and the clinical efficacies were compared.ResultThe effective rate was 90.0% in the treatment group versus 77.5% in the control group, and the difference was statistically significant (P<0.05); after the treatment,there was a significant difference in comparing the Holden's FAC between the two groups (P<0.05); the FMA score changed significantly after the treatment in both groups (P<0.05), and there was a significant difference in comparing the FMA score between thetwo groups after the treatment (P<0.05); the TGA score changed significantly after the intervention in both groups (P<0.05), and there was a significant difference in comparing the TGA score between the two groups after the intervention (P<0.05).ConclusionHeat-sensitive moxibustion plus point-toward-point needling can produce a significant efficacy in treating poststroke strephenopodia, as it can enhance the effective rate and improve the lower-limb motor function.

OBJECTIVETo offer normal reference of diameter of the cervical spinal cord and available diameter of cervical spinal canal and to screen scientific radiographic criteria to define and quantify cervical spinal cord disease.

METHODSThe magnetic resonance images of 120 normal people had been measured. The data of diameters of cervical spinal cord, CSF, M, the ratio of diameters of cord and CSF, and the ratio of diameters of cord and M had been collected and statistical analysis was made. And the relationships between the data above and each of gender, the length of C-spine and age were evaluated. In addition, the ratio of diameters of cord and CSF, and the ratio of diameters of cord and M was evaluated.

RESULTSThe study showed that in healthy people, the diameters of cervical spinal cord, CSF and M was larger in the males than in the females, decreased with age, and increased with the length of C-spine but the diameter of CSF. And the ratio of diameters of cord and CSF increased with age and not affected by the length of C-spine. However, the ratio of diameters of cord and M was not affected by age and the length of C-spine.

CONCLUSIONThe ratio of diameters of cord and M is not affected by individual variation and can be used to evaluate cervical spinal cord atrophy, compression and impaired in patients with cervical myelopathy and can be important information in looking for clinically critical points.

Adolescent ; Adult ; Aged ; Cervical Vertebrae ; anatomy & histology ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Spinal Canal ; anatomy & histology ; Spinal Cord ; anatomy & histology