Nuclear receptor transcription factors are ligand-activated proteins that control various biological events from cell growth and development to lipid metabolism, and energy and glucose homeostasis. Nuclear receptors are important drug targets for metabolic diseases. Liver X receptors (LXRs) are nuclear receptor transcription factors that play essential roles in regulation of cholesterol, triglyceride, fatty acid, and glucose homeostasis. LXR-deficient mice have shown the association of LXR-signaling pathway dysfunction with several human pathologies including atherosclerosis, hyperlipidemia, Alzheimer's disease and cancer. Thus, LXRs are promising pharmacological targets for these diseases. Synthetic LXR agonists may lower cholesterol, but increase triglyceride and induce fatty liver. The naturally occurring LXR ligands, with moderate activity, may serve as nutraceuticals for prevention or treatment of the disorders, while minimizing potential side effects. In this review, recent advances in natural LXR modulators are summarized including agonist, antagonist and the modulator of LXR pathway.

Purpose:To evaluate the efficacy of NP regimen (NVB and DDP) in advanced non-small-cell lung cancer (NSCLC). Methods:48 patients with advanced NSCLC were treated by NP regimen. All of them had stage Ⅲ-Ⅳ disease (22 of them were primary treatment, the others were subsequent treatment). The chemotherapy dosage of NVB was 25 mg/m2 iv. d1,5, That of DDP was 35 mg/m2 iv d1,3.Results:The overall response rate (RR) was 50%, medium response time 5.5 months, medium survival time 11 months. The RR of 22 patients with primary treatment was 63.6%. The other patients after multiple course therapy 38.5%. The major adverse effects were myelosuppression and vein inflammation drug infusion through deep vein could avoid the vein inflammation. Conclusions:Authors suggest that NP regimen is effective therapy for non-small-cell lung cancer and deserves further clinical observation.

Purpose:To investigate clinical effects and side reactions of advanced NSCLC by combined chemotherapy base on gemcitabine. Methods:36 cases of advanced NSCLC were divided into two groups: Group 1, 20 cases were treated by gemcitabine 1.6 g at d1,d8,d15 and 80mg/m 2 DDP at d1; Group 2,16 cases were treaded by gemcitabine 1.6 g and paclitaxel 60 mg at d1,d8,d15.Both groups were repeated every 4 weeks and clinical effects were evaluated after 3 cycles.Results:CR 1 case, PR 17 cases, SD 16 cases, PD 2 cases and CR+PR 18 cases (response rate 50 0%) in 36 cases observed. In 20 cases primary treatments:CR+PR 11cases (response rate 55 0%);In 16 cases re-treatments: CR+ PR 7 cases (response rate 43.75%); In 15 cases of advanced NSCLC re-treated by gemcitabine combined with paclitaxel: CR+PR 7 cases (response rate 46.7%). Side reaction: most cases showed bone marrow suppression and symptoms of gastrointestinal side-effects, which included 12 cases of Ⅲ-Ⅳ grades leukocytopenia (33.3%),7 cases of Ⅱ-Ⅲ grades soterocytopenia (19.4%),8 cases of Ⅲ-Ⅳ grades symptoms of gastrointestinal side-effects (22.2%),2 cases of Ⅱ grades abnormal liver function.Conclusions:Better clinical effects have been achieved in the therapy of advanced NSCLC by combined methods based on gemcitabine and side-reactions are tolerable;Nice effects were obtained in the re-treatment of NSCLC by gemcitabine combined with paclitaxel.It is valuable to investigate its Clinical effects more deeply.

The teaching model in classroom is a popular process of language communication between teachers and students.There is a paradox phenomenon in asking and interlocution due to tergiversalion ofthe original intention ofthe teaching.So,it is an important thing that the teaching model should be transferred from asking to interlocution to establish equal right,enhance understanding and decrease undesirable manners.

Objective To investigate the efficacy and safety of tranexamic acid in perioperative blood loss in old patients with multi-level lumbar spinal stenosis.Methods From January 2009 to September 2010,a total of 68 consecutive patients with multi-level lumbar spinal stenosis ( ≥65 years old) underwent posterior decompression,internal fixation and bone graft fusion who were randomly divided into group A and group B with 34 patients in each.The patients in group A received tranexamic acid and the patients in group B received an equal volume of normal saline.The amounts of intraoperative blood loss,postoperative wound drainage,blood transfusion,the number of the patients needing blood transfusion and hemoglobin,fibrinogen,prothrombin time and so on were examined preoperatively and 24 hours postoperatively.All the patients were observed for the clinical symptoms of deep vein thrombosis.Results The amounts of intraoperative blood loss,postoperative wound drainage,blood transfusion and the number of the patients needing blood transfusion in group A were significantly decreased than those in group B[ (641.1 ± 128.4) ml vs.(780.1 ± 107.3) ml,(228.80 ± 52.07) ml vs.(345.50 ±42.16) ml,(1.02 + 1.56) U vs.(2.89 ± 1.76) U,16 cases vs.28 cases ],there were significant differences between two groups (P ＜ 0.05 ).As for the value of postoperative hemoglobin concentration in group A [ ( 104.00 ± 4.87) g/L ] was significantly higher than that in group B [ (92.20 + 5.47 ) g/L ] (P ＜ 0.05 ).There were no significant differences in the levels of fibrinogen,prothrombin time,and activated partial thromboplastin time between two groups (P ＞ 0.05).No deep vein thrombosis was found 7 days postoperatively.Conclusion Tranexamic acid can be effectively used in spine surgery in old patients with multi-level lumbar spinal stenosis without increasing the risk of venous thrombosis.

As an important member of Tim gene family,T cell immunoglobulin domain and mucin domain protein (Tim) - 1 mainly expressed in T cell surface and adjust T cells immune response.Recent studies have found that Tim-1 gene polymorphisms may be linked with allergic diseases,autoimmune diseases and infection diseases.The review of relationship between Tim-1 polymorphism and diseases will have profound and long-term impact to expound the pathogenesis,providing new method to prevent and treat diseases.

Objective: To establish a method for the determination of ketoconazole and miconazole nitrate in compound ketocon-azole gels. Methods:An HPLC method was developed. A Hypersil BDS C18 column(416 mm × 200 mm,5μm) was used, the mobile phases consisted of 0. 5% ammonium acetate solution-methanol(containing 0. 2% triethanolamine) (20∶80), the flow rate was 1. 0 ml ·min-1 , the detection wavelength was set at 230nm, the column temperature was 30℃ and the injection volume was 20μl. Results:There was a good linear correlation within the range of 5. 1-510. 0 mg·L-1 for ketoconazole (r=0. 999 9) and 50. 0-500. 0 mg·L-1 for miconazole nitrate (r=0. 999 9), the average recovery for ketoconazole and miconazole nitrate was 100. 3%(RSD=0. 38%, n=6) and 99. 9%(RSD=0. 79%, n=6), respectively. Conclusion:The method is simple, rapid, accurate and sensitive, and can pro-vide a method for controlling the quality of compound ketoconazole gels.

In order to to be a outstanding doctor must have the six elements:theory, practice, moral quality, psychological quality, developing quality and communication quality. To cultivate outstanding physicians are de-signed, on the ability of accommodation;A sound personality and good professional ethics;Unity, is the ability to obtain from the following several aspects:reform the traditional education teaching system, establishing the special general education management organization, set up a scientific system of general education courses, makes the strong ability of general education teachers and building with students as the core of teaching methods.

During the treatment of pediatric tumor,vincristine is one of the most widely used and most effective drugs. However,the adverse reactions have limited its clinical application. In recent years,studies have found that the metabolism of vincristine are different in different races and different individuals,and co-ad-ministration with certain drugs such as imidazoles antifungal drugs may enhance its adverse reaction. Resear-ches on new drug delivery system provide a new idea for reducing the adverse reactions of vincristine and impro-ving its bioavailability.

Neuroblastoma(NB)is the most common extra -cranial malignant tumor of children.While it ac-counts for 7% of all childhood malignancies,NB accounts for 1 0% of childhood cancer mortality.According to the risk group classification systems,there is high heterogeneity malignant degree of NB.Many bio -features are associated with the prognosis of NB.As the development of the diagnosis and therapy,the relationship between some bio -features and the prognosis has been changed.In the future,target therapy of molecular biology may be a new breakthrough in the therapy area.