Drugs, Chinese Herbal ; administration & dosage ; therapeutic use ; Humans ; Phytotherapy ; methods ; Pulmonary Disease, Chronic Obstructive ; drug therapy

The biomarkers can facilitate the evaluation of the factors modulating susceptibility to carcinogens among human populations. As an indicator of DNA damage, carcinogen-DNA adducts represent a critical step on the carcinogenic pathway. Genetic differences in detoxification capabilities and the DNA repair efficiency may modulate PAH-induced DNA damage and carcinogenesis. Experimental animal studies have demonstrated that the fetus and infant are more susceptible to polycyclic aromatic hydrocarbons (PAHs) induced carcinogenesis than adults. Recent years, more and more studies have shown that the prenatal exposure to PAHs not only associated with the increasing risk of cancer, but also related to adverse birth outcomes. This paper reviewed the differential susceptibility to PAHs between the paired maternal and newborn and discussed the relationship between the DNA adducts levels and the gene polymorphisms.

BACKGROUND: Ultrasound-medium frequency electrotherapy has better pain-relieving effect,whether it involves enkephalin and the like neurotransmitter is still not very clear, it is necessary to carry out qualitative and quantitative analysis of the pain response in rats received ultrasound-medium frequency electrotherapy.OBJECTIVE: To investigate the pain-relieving effect of ultrasound-medium frequency electrotherapy and its influence on the enkephalin content in rats, aiming to probe its underlying mechanism and relationship with neurotransmitter enkephalin.DESIGN: Randomly controlled study taking experimental animals as subjects.SETTING: Department of Physiotherapy, First Hospital Affiliated to China Medical University, Institute of Basic Medicine, Peking Union Medical CollegeMATERIALS: This experiment was carried out at the Institute of Basic Medicine, Peking Union Medical College between June 2002 and March 2003. Forty healthy male Wistar rats were adopted and randomized into four groups,namely methionine enkephalin detection experimental group and control group,as well as leucine enkephalin detection experimental group and control group with 10 rats in each group ,amongst which methionine enkephalin experimental group and leucine enkephalin experimental group were generally designed as experimental group ,with the other two group as control group.METHODS: ①Rats ín the experímental group were subjected to ultrasound-medium frequency electrotherapy with frequency of 0.8 MHz in manner of geminal pulse,the modulatìng frequency was 100 Hz and ultrasound intensity of 0.9 W/cm2;the carrier frequency of medium frequency electricity was 4 kHz with modulating frequency of 100 Hz in manner of continuous wave,the electric current of medium frequency was 2 mA and acting time of 10 min. rats in control group received the same dealing,but the higher voltage of ultrasound-medium frequency electrotheprauetic instrument was not used, thereby no energy output was available. tail flick test(TFr) was used to test rat algesthesia,and stopwatch was used to record the time for tail flick(s) that was taken as the value of pain threshold. ②The threshold of pain was tested at 10 minutes instantly after ultrasoundmedium frequency electric stimulation,and then pituitary (removing the posterior pituitary lobe) and hypothalamus were obtained to detect the content of methionine enkephalin and leucine enkephalin by using radioimmuno assay.MAIN OUTCOME MEASURES: The changes of the pain threshold after treatment,the content of methionine enkephalin and leucine enkephalin.RESULTS: Totally 40 rats were enrolled in the experiment and entered in the results analysis. ① The changing rate of pain threshold in two experimental group were 265.79% and 272.90% respectively,the difference was of no statistical significance (P ＞ 0.05). ②After ultrasoundmedium frequency electrotherapy,the content of methionine enkephalin and leucine enkephalin in pituitary and hypothalamus were obviously higher than before treatment [ The changing rate of methionine enkephalin and leucine enkephalin in adenohypophysis was 300.48 ±36.21)% and(204.61±68.65)% , respectively, compared to (239.80±59.98)%and(205.53±51.62)% in hypothalamus, P ＜ 0.05]. ③Linear regression analysis revealed that the variance of the pain threshold was positively correlated with the content of methionine enkephalin in adenohypophysis(r=0.91 ,P ＜ 0.01), suggesting the increment of methionine enkephalin in adenohypophysis was closely connected with the increment of pain threshold,and the level of methionine enkephalin in adenohypophysis would be higher than that in control group by 117.02% when the value of pain threshold increased by100%.CONCLUSION: One of the important mechanisms for the pain-relieving effect of ultrasound-medium frequency electrotherapy might be the increase of methionine enkephalin in adenohypophysis.

Objective To study the prospective memory and the severity of the impairment of event- based prospective memory(EBPM)and time-based prospective memory(TBPM)in normally aging adults. Methods We set a neuropsychological battery to measure the education-matched 40 adults and 40 normally aging adults who were given EBPM and TBPM tasks.Results Compared with the young controls(EBPM, 6.25?1.60;TBPM,5.38?0.87),both EBPM(2.50?0.85)and TBPM(4.93?1.07)in the elderly had been impaired,especially EBPM(t = 13.117,P

Objective To evaluate the expression and correlat ion of hTERT and p21(WAF1/CIP1) in colonic carcinoma. Methods A total of 45 cases of normal colonic carcinoma, 10 cases of colonic adenoma s and 10 cases of normal colonic tissues were studied using in situ hybridization (ISH) and immunohistochemical techniques. Results hTERT and p21 were found not only in colonic carcinoma (t he positive rate being 88.9% and 46.7%, respectively ), but also in colonic aden omas (the positive rate being 50.0% and 10.0%, respectively). The positive rate of hTERT expression increased significantly in advanced stage (C+D) of colonic c arcinoma ( P

This article introduces a novel scavenger for waste anesthetic gas which makes use of negative pressure in operating room. This setting can scavenge the exhaust gas absolutely without affection the normal work of anaesthesia.
Anesthetics ; Gas Scavengers ; Operating Rooms

Objective: This study investigates the effect of docetaxel + oxaliplatin + S-1 (DOS program) in treating advanced gastric cancer and surgical safety assessment. Methods: Fifty patients with advanced gastric cancer admitted to the Department of Gastrointestinal Surgery, The Affiliated Tumor Hospital of Xinjiang Medical University between January 2011 and May 2012 were enrolled in this study. These patients were randomized into the observation arm (n=25) and the control group (n=25). The observer group was administered three cycles of chemotherapy using a DOS program before surgical treatment, whereas the control group underwent surgery. Results: Compared with the control group, the clinical response rate (64.0%), D2 lymph node dissection rate (88.0% vs. 64.0%), and R0 resection rate (92.0%vs. 68.0%) in the observation group were significantly higher (P<0.05). Moreover, the number of postoperative lymph node metastasis in the observation group was significantly less than that in the control group (3.2±2.5 vs. 6.3±2.9, P<0.05). The operative time (230.5 min±45.6 min vs. 205.6 min±42.4 min) and intra-operative blood loss (425.5 mL ±115.4 mL vs. 210.6 mL±125.6 mL) of the two groups were sta-tistically significantly different (P<0.05). The incidence of postoperative complications and lymph node sweeping number of the two groups showed no significant difference (19.6 ±2.8 vs. 21.2 ±2.0, P>0.05). The patients exhibited good tolerance to chemotherapy, with bone marrow suppression and gastrointestinal reactions as the main adverse effects. Conclusion:The DOS program is a highly efficient, advanced gastric cancer neoadjuvant chemotherapy. The program can improve patient survival and has good patient tolerance and compliance, good peri-operative safety, high R0 resection rate, and low postoperative lymph node metastasis rate.

After the antidepressant patents were retrieved from Innography, their distribution, R& D level, hot spots and core patents were analyzed , which showed that the largest number of antidepressant patents was produced in USA, the medicinal preparations containing organic active ingredients were the hot spots, the technological and economic strengths of Pfizer, Novo and Sanofi-Aventis were relatively tremendous.The law-suited patents, reex-amined patents and patent strength were mined.

Objective To assess the effectiveness of absorbable screws and metallic devices for treating tibial plateau fractures.Methods Fifty-seven cases of tibial plateau fractures were treated with internal fixation using absorbable screws(Group A),cannulated screws(Group B)and condylar buttress plates(Group C)in our hospital.According to Schatzker classification,there were 15 cases with typeⅠfractures,21 with typeⅡ,nine with typeⅢand 12 with typeⅣ,who were followed up for 6-51 months. Statistical analysis was performed to compare bone union and functional restoration of the knee between three groups.Results Bone union was achieved in all cases.Based on Merchant scale for knee func- tion,excellence rate was 84%(16/19)for Group A,92%(11/12)for Group B and 85%(22/26) for Group C,with no significant statistical difference.Conclusion Absorbable screws is as effective as metallic devices for treating tibial plateau fractures and has advantages of minimal invasion,few complica- tions and avoiding secondary operation.