Objective To understand the knowledge of sexual and reproductive health of undergraduates with different nationalities and provide scientific basis for sexual and reproductive health education in the nationalities university.Methods A self-developed questionnaire about sexual,reproductive health and sexual attitude was used to carry out investigation among 2 200 freshman.Results Formal education (family and school) do not become the main source of the sex knowledge; there were statistic significance of the comparison of sexual,reproductive knowledge and sexual attitude among minority undergraduates and Han nationality undergraduates,as well as among undergraduates from different minorities.Conclusions The undergraduates are thirsty for gaining general sexual knowledge from school and family during the period of university.It is necessary to improve sexual and reproductive knowledge through various ways for minority undergraduates.

AIM: To establish a simple and repeatable orthotopic animal model of the A549 cell line.METHODS: A549 cells in matrigel were inoculated into left lung or right flank of nude mouse. The growth pattern of A549 tumors and the chemotherapeutic efficacy of carboplatinum were studied. RESULTS: Tumors generated and dispersed widespreadly to contralateral lung. Tumors in lung were less susceptible to carboplatinum than those growing in flank. CONCLUSION: A simple and repeatable orthotopic animal model of the A549 cell line was presented, this allows researchers to evaluate novel compounds and new drugs for treatment of human lung cancer.KEY WORDS A549 cell line; orthotopic model; nude mice

On the basis of Shay's ulcer model, we have studied the effects of food re. striction time on the experimental gastric ulcer in rats. The results indicat that each restricted group forms gastric ulcer after ligation of pylorus 18 hr. There are a postive correlation between the restricted time and the severity of gastric ulcer, and a negative correlation between the severity of gastric ulcer and the amount of gastric acid secretion. We suggested that Shay's ulcer model does not belong to peptic ulcer, but belonges to one of the stress ulcers. The restricted time may play an important role in the mechanism for this ulcer model.

Objective To study the effect of new generation histone deacetylase inhibitor LBH589 single-drug or combined with the mouse serum which contains the radix echinopsis on multiple myeloma (MM) cell line U266 and their mechanism.Methods The acetylation level of α-tublin which was a substrate of HDAC6 was detected by Western blot.The chemical force between Heat shock protein 90 (HSP90) and its client proteins was detected by immune precipitation (IP).Results The different concentrations of LBH589 single drug (0,20,50 nmol/L),and 50 nmol/L combined with the mouse serum which contained the radix echinopsis (1 g/ml) were able to inhibit the proliferation of U266 cell.With the increase of drug concentration and the extension of time,the acetylation levels of α-tublin and HSP90 increased gradually (at 24 or 48 hours) in a dose dependent (P ＜ 0.05).The inhibition of LBH589 combined with the mouse serum was stronger than that of LBH589 single drug (P ＜ 0.05).Conclusion LBH589 could inhibit the growth of MM cells and their cell cycles,and induce the apoptosis of MM cell line U266.

Cardiopulmonary resuscitation is an important part of standardized residency training. There are certain flaws in the various commonly used training and assessment mode. In the exploration of the new mode, "step-by-step" training helps to learn skills step by step. "Low intensity and high frequency" training not only focuses on key points and difficulties, and lightens the burden of the teachers and residents, but also can improve the training effect through repeated reinforcement. Combining different training methods organically to establish a "diversified" training mode can make full use of the advantages of different methods and make up for each other's shortcomings. In addition, the "veto power" should be introduced into the assessment. Scenario simulation with role play may be an effective way to train teamwork ability, but it still needs further exploration.

Humans ; Temporomandibular Joint Disorders ; diagnosis ; therapy

Humans ; Precision Medicine ; Temporomandibular Joint Disorders ; diagnosis ; psychology ; surgery ; therapy

Objective To determine enterobacteria DNA load in venous blood of febrile surgical patients using real-time quantitative polymerase chain reaction (RQ-PCR), to study the correlations between DNA load and vital signs/blood cell count, and to compare the difference between different detection methods in terms of positive rates.Methods A total of 72 blood samples were obtained for bacterial cuhure and RQ-PCR.The correlations of enterobacteria DNA load with body temperature, heart rate, while blood cell count,and percentages of leukocyte and lymphocyte were then analyzed.Results The enterobacteria positive rate determined by RQ-PCR (63.89％) was significantly higher than that by bacterial culture (9.72％) (F =4.383, P =0.036).The DNA load was significantly correlated with both body temperature and heart rate (P =0.006, r =0.323;P =0.000, r =0.411), but not with white blood cell count, percentages of leukocyte and lymphocyte, and age (P=0.438, r=0.093;P=0.825, r=0.027;P=0.451, r=-0.090;P =0.096, r =0.198).Conclusions RQ-PCR can quickly determine the enterobacteria DNA load in peripheral blood with high sensitivity.Routine blood cell count may not accurately reflect the enterobacteria DNA load in blood.Body temperature and heart rate may be influenced by various factors.

At present the study of Marine antineoplastic drugs has already become the focus of concern around the world, Marine natural products has become an important source of clinical anti-cancer drugs. Ecteinascidin-743 from the Caribbean sea squirts Ecteinascidia turbinata extraction have been the ocean alkaloid, antitumor activity is significantly higher than the current widely used clinical antitumor drugs, inhibit a wide variety of tumor cell activity such as leukemia, ovarian cancer, soft tissue sarcoma, melanoma, cervical cancer, breast cancer, colorectal cancer, kidney cancer, prostate cancer, lung cancer and non-small cell lung cancer and other tumor cells, is the first successful application to the oceans, clinical antitumor drugs. In this paper, the drug synthesis, pharmacological and clinical research progress were reviewed.

Objective To study the quality control of yinpian of Isatis Root.Methods Optical microscope was used to identify the microscopic features,TLC was adopted to identify the arginine in Isatis Root,and HPIC-ELSD was used to detect the quality of arginine.Results and Conclusion There is no difference between yinpian and crude powder of Isatis Root.Arginine can be detected bv TLC.The moisture contents.the total ash contents and the acid-insoluble ash contents in the yinpian should be less than 9.0%,10.0%,and 2.0% respectively;while the alcohol-soluble extractive contents and the contents of arginine in Isatis Root should be more than 25.0% and 2.01% respectively.