Objective To explore clinical effect of capecitabine combined with oxaliplatin on stage Ⅲ colorectal cancer,as well as its impact to immune function and quality of life.Methods 62 cases with stage Ⅲ colorectal cancer were selected as research subjects,and they were randomly divided into control group (oxaliplatin combined with 5-fluorouracil + calcium folinate,FOLFOX4 plan) and observation group (capecitabine combined with oxaliplatin,XELOX plan),31 cases in each group.The clinical effect,immune function and quality of life were compared between the two groups.Results The total effective rate had no obvious difference between the two groups(P＞0.05).The levels of CD+3,CD+4 and CD+8 cells of the observation group were (68.31±6.37)％,(43.58±4.24)％,(46.35±5.34)％,respectively,which of the control group were (57.72±5.26)％,(35.28±5.21)％,(38.76±4.42)％,respectively.After treatment,the above indicators of the two groups were significantly higher than those before treatment,which of the observation group were significantly higher than those of the control group(t=15.09,6.88,7.14,all P＜0.05).After treatment,the scores of emotion,role,social,physical,cognition and total scores of the observation group were (84.38±3.02)points,(82.36±3.03)points,(63.35±3.08)points,(89.24±4.05)points,(90.14±4.02)points,(69.53±4.28)points,respectively,which of the control group were (76.91±4.04)points,(73.82±3.07)points,(56.83±3.11)points,(86.42±4.04)points,(85.52±3.06)points,(54.49±4.32)points,respectively.After treatment,the scores of the two groups were significantly higher than those before treatment,which of the observation group were significantly higher than those of the control group (t=8.25,11.02,8.29,2.75,5.09,13.77,all P＜0.05).Conclusion Capecitabine combined with oxaliplatin has similar clinical effect with routine FOLFOX4 plan on patients with stage Ⅲ colorectal cancer,and it can help patients to improve immune cell function and quality of life,so it is worthy to be promoted in clinical.

BACKGROUND:One function of papaver nudicaule L is its analgesic effect. Previous studies showed that total alkaloid,extracted from papaver nudicaule,possesses observable analgesic effects. Nudicauline,separated from the total alkaloid of papaver nudicaule,is a new kind of alkaloid.OBJECTIVE:To study the analgesic effect of nudicauline and its mechanism of action.DESIGN:A randomized controlled study based on the experimental animals.SETTING:Institute of Traditional Chinese Medicine ,Chengde Medical Colege.MATERIALS:The experiment was conducted in the Institute of Traditional Chinese Medicine of Chengde Medical College (Key Laboratory for Research and Exploitation of Traditional Chinese Medicine) from August 2001 to December 2003.Totally 140 mice were included and randomly divided into 14 groups with 10 mice in each group in this experiment.METHODS: ① Study of the analgesic effect.The animals were randomly assigned to 5 groups:saline control group,and nudicauline 2.5,5.0 and 10.0 mg/kg groups as well as morphine group. ② relation with endor-phin.The animals were divided into 5 groups:saline control group,nudicauline +naloxone group,morphine group,and morphine +naloxone group. ③relation with nitrogen monoxide.The animals were divided into 4 groups:saline group,nudicauline group,nudicauline +L-arginine 400 mg/kg group,and n-nitro-L-arginine methyl ester (L-NAME) 37.5 mg/kg group.Totally 20 μL 10 g/L formalin was injected into the right hindlimbs of the mice. The pain observation item:walking freely was 0 point;being lame,could stand on the floor without moving was 1 point;could lift their feet was 2 point;could shake or lick their feet was 3 points.The observation fell into 2 phases:0 to 10 minutes after pain induction was set as the first phase,and 20 to 30minutes was set as the second phase.MAIN OUTCOME MEASURES:The pain response scores of the mice in each group under the effect of different drugs.RESULTS: ① Nudicauline reduced significantly the score of response to the pain induced by formalin in the second phase(P ＜ 0.05-0.01).The higher dosage of nudicauine had certain inhibitory effect on the pain reaction in the first phase (P ＜ 0.05).Morphine had significant inhibitory effect on the pain reaction in both phases(P ＜ 0.01). ② Naloxone could completely inhibit the analgesic effect of morphine,but had no influence on the analgesic effect of nudicauline. ③ The analgesic effect of nudicauline was partially blocked by L-arginine in the second phase and enhanced by L-NAME.CONCLUSION:Nudicauline has obvious analgesic effects,whereas opium antagonist naloxone can completely inhibit the analgesic effect of morphine,but cannot alter the effect of nudicauline,which indicates that the analgesic effect is not related to the endogenous opioid system. L-arginine can partially inhibit the analgesic effect of nudicauline while L-NAME can increase the analgesic effect of nudicauline,suggesting that the analgesic effect of nudicauline may be partially associated with the production and release of nitrogen monoxide.

MicroRNA(miR)-203 is a stemness-inhibiting miRNA that adjusts the epithelioid cell differentiation by restricting the expression of stemness-related transcription factor.Its abnormal expression has been detected in several types of human cancers,including bladder cancer,breast cancer,colon cancer and pancreatic cancer.miR-203 plays a critical role in the tumor genesis and development by regulating cell proliferation,differentiation and apoptosis.

Flowering, the floral transition from vegetative growth to reproductive growth, is induced by diverse endogenous and exogenous cues, such as photoperiod, temperature, hormones and age. Precise flowering time is critical to plant growth and evolution of species. The numerous renewal molecular and genetic results have revealed five flowering time pathways, including classical photoperiod pathway, vernalization pathway, autonomous pathway, gibberellins (GA) pathway and newly identified age pathway. These pathways take on relatively independent role, and involve extensive crosstalks and feedback loops. This review describes the complicated regulatory network of this floral transition to understand the molecular mechanism of flowering and provide references for further research in more plants.
Arabidopsis ; physiology ; Flowers ; physiology ; Gene Expression Regulation, Plant ; Gene Regulatory Networks

BACKGROUND: Real-time fluorescence quantitative polymerase chain reaction (PCR) refers to join the fluorescence groups into PCR reacting system, and to real-time monitor entire PCR process using the fluorescence signal accumulation, finally to make the quantitative analysis of the unknown template through the standard curve. OBJECTIVE: To study the theory of real-time fluorescence quantitative PCR and to explore its applications and progress in medicine. METHODS: With "real-time fluorescence quota PCR, theorem, application" in English for the search term, PubMed database was retrieved from January 2000 to December 2008. With "real-time fluorescence quantitative PCR, principle, application" in Chinese for the search term, Wanfang Database from January 2000 to December 2008, Tsinghua Tongfang Chinese database from January 2000 to December 2008 ware was retrieved. Literatures were limited to English and Chinese languages. Cell factor and tumor resistance genes served as the evaluation index. The methodology of research on the real-time fluorescence quantitative PCR technology and medical applied research on real-time fluorescence quantitative PCR technology were included. While repetitive research and Meta analysis were excluded. RESULTS AND CONCLUSION: Because real-time fluorescence quantitative PCR technology has not only realized PCR develops from qualitative to quantitative levels, but also has strong specificity, high sensitivity, good duplication, accurate quantization, high automaticity, and entire blocking response compared with conventional PCR, thus it becomes the important tool in the molecular biology research. Real-time fluorescence quantitative PCR technique has been widely applied, such as mRNA expression, detections of DNA copy number and determination of mononucleotide polymorphism, as well as in the clinical medicine including accurate quantitative examination of mycobacterium tuberculosis, Type B and Type C hepatitis, AIDS virus, gonococcus, and chlamydia trachomatis. Its quantitative scope extremely extends, no need of gradient dilution, the specificity is stronger, overcomes the false positivity. Due to the traditional PCR technology cannot give the accurate quantization, it is greatly limited in the practical application. Therefore, the accurate quantization of the PCR product, particularly the dynamic monitoring of viral etiology, becomes the urgent need.

Purpose To observe the effect of MK on proliferation, migration and angiogenesis of human umbilical vein endothelial HU-VECs cells and to explore the role of MK in tumor angiogenesis. Methods siRNA targeting MK was used to downregulate MK expres-sion in human breast cancer cell line MDA-MB-231. Then, the experiment was divided into three groups: the untreated group, the empty vector transfection group and MK gene interference group. CCK-8 assay was used to detect the endothelial cells proliferation, tr-answell method was for detection of endothelial cell migration numbers, and matrigel in vitro small tube formation assay was used to sur-vey the state of tube formation. Expression of MK in siRNA transfection was identified by RT-PCR and Western blot. Results The MK gene interference group showed lower cell proliferation activity, less number of migration of cells and tube formation than the other two groups (P<0. 05). Conclusion Low-expressed MK in human breast cancer cell line MDA-MB-231 can inhibit proliferation, mi-gration and angiogenesis of endothelial cells, which shows that MK may play an important role in tumor angiogenesis.

Objective To investigate the relationship between the neurotoxicity of A? and monoamine neurotransmissions in brain.Methods 32 male SD rats were divided into four groups: The model group, Nimodipine treatment group, Shenmai treatment group and the control group,there are 8 rats in each group.Under the stereotaxis A? was injected into NBM of rats to establish AD model, The extracellular monoamine neurotransmissions were detected by microdialysis in vivo with high performance liquid chromatography.Results The contents of frontal lobe NE,DA,5 HT in the model group were lower than those in the control group, which recovered to normal level,DA in hippocampus was higher than the control group;after the treatment of Shenmai,the result was similar to Nimodipine group.There was no difference between the two treatment groups.The rising levels of three kinds of transmitters in different brain area were different.Conclusion Neurotoxicity of A? might relate to dysfunction in monoamine system. A? on monamine system of inhibition was shown through multiple pathways, including the loss of Ca 2+ homeostasis.

Objective: To study the expression of cyclin D1 and E in lung cancer. Methods: The immunohistochemical technique was used to detect the expression of cyclin D1 and E in 68 cases of non small cell lung cancer(NSCLC) and 21 cases of small cell lung cancer(SCLC). Results: The rate of cyclin D1 protein positive expression was 48.5% in NSCLC, 4.8% in SCLC,showing significant difference( P

Traumatic stress in the normal individual results in activation of the sympatho-adrenal system causing a rise in noradrenaline and adrenaline, acute phase response in liver ,and activation of the hypothalamic-pituitary-adrenocortical(HPA)system resulting in elevated levels of cortisol. Studies in animals and in humans with posttraumatic stress disorder indicate that successful adaptation to stress is a prerequisite for the survival of all organisms living in an enviroment in which noxious stimuli are constantly present.