Bmi-1 is a core member of the polycomb group genes.As a proto-oncogene,Bmi-1 plays an important role in cell self-renewal,proliferation and apoptosis.Several studies have shown that Bmi-1 is highly expressed in some head and neck malignant tumors,such as nasopharyngeal cancer and laryngeal carcinoma.Furthermore,the expression level of Bmi-1 is closely related to the occurrence,development,incursion and prognosis of tumor.Bmi-1 is expected to become a novel tumor molecular marker,and provides a new direction for the treatment of the head and neck malignant tumor.

Radiation-induced stomatitis is a frequent side effect for head and neck cancer patients undergoing radiotherapy, which affects both the treatment and the life quality. The direct effects of radiation, oxidative stress, transcription factor, proinflammatory cytokine and pathogenic microorganism are involved in the onset of radiation-induced stomatitis. The pathologic process can be divided into five phases including initiation, up-regulation, amplification, ulceration and healing. Understanding of the pathogenesis and risk factors provides basis for prevention and control of radiation-induced stomatitis.

Inductive chemotherapy and concurrent chemoradiotherapy have been a focus on the clinical research in the treatment of nasopharyngeal carcinoma.Cisplatin,as a kind of representative platinum drug,can improve the curative effect,but it also brings a lot of side effects to nasopharyngeal carcinoma patients.The new kind of platinum drug-nedaplatin,can not only guarantee the curative effect but also reduce the side effects of chemotherapy.

Objective To investigate the clinical effects, the therapy reactions,the living qualities of three treatments in advanced nasopharyngeal carcinoma. Methods From Jan 2001 to Jun 2002, 120 patients pathologically confirmed NPC who firstly underwent radiotherapy were divided into two groups: radiotherapy with concurrent chemotherapy group(RC, n = 60, 5 fractions per week, one time per day, 200 cGy per day to a total dose of 7 000 ～ 8 000 cGy. cisplatin and 5-Fu two cycles in the first and fourth week during radioation); radiotherapy with AiDi injection group(RAD, n = 60, radiotherapy was the same as that of RC. Continuously injecting AiDi for 10 days 50 ml per day was one cycle which was repeated 3 cycles every alternation of 7 days); another 60 patients who contemporaneity reciceved radiotherapy alone (radiotherapy was the same as that of RC) because of some reasons and were comparable in clilical materials were regarded as the third group (R) to compare with the above two groups. The life quality, 3-year survival rate, and acute or chronic radiation reactions in the three groups were observed. Results All patients were followed up for more than 3 years: the 3-year survival rate in RC (73.3%),which was homologous as that in RAD(65.0 %, P =0.347), was higher than that in R group(53.3%,P = 0.028), and the local recurrent was inverse(10.0%,26.7%,P = 0.033 6). The acute and chronic radiation reactions in RC was highest whereas that in RAD group is lowest(P

Objective: To revise the Gratitude, Resentment, and Appreciation Test (GRAT) for Chinese college students. Methods: On the translation of the Gratitude, Resentment, and Appreciation Test (GRAT), some items was modified and developed a revised gratitude scale in the context of Chinese culture. The GRAT was filled by 1000 students from six universities. Results: The results of EFA have three factors, lack of a sense of deprivation (or sense of abundance), appreciation for simple pleasures, and social appreciation, the three factors are similar for study of Watkins. The result of CFA indicated that the validity of formal questionnaire was acceptable with the factor loading of each item. Internal consistency analysis showed that the Cronbach ? coefficient was 0.910, split -half correlation coefficients was 0.902. And the test-retest stability coefficient was 0.850. Conclusion: The reliability and validity of GRAT are verified.

Objective To observe the clinical effect of Sarcandra glabra extracts against oxida-tive damage. Methods 46 patients diagnosed as nasopharyngeal careinoma stage Ⅲ and Ⅳ a were ran-domly divided into control group (n=25) and study group (n=21). All patients underwent combined chemoradiotherapy treatment. Besides, the patients in study group were given Sarcandra glabra 20 g/d orally. The total activity of superoxide dismutase (SOD) and plasma eontent of malonaldehyde (MDA) were measured before and after treatment. The tumor regression and aeute chemoradiotherapy side reaction were observed after treatment. Results All patients fulfilled the whole range treatment, After treatment, the total plasma SOD activity decreased and plasma MDA level was elevated in con-trol group, while both SOD aetivity and MDA level were reduced in study group (P<0. 05). When the therapy ended, the SOD of study group was higher and MDA was lower than that of control group (P<0.05). There was no difference in tumor local control rate after radiotherapy between two groups (P>0.05). The incidence rate and severity of acute chemoradiotherapy side reaction were slighter in study group than those in control group (P<0. 05). Conclusion Sarcandra glabra extracts exerts obvious inhibitory effect on oxidative damage. Combined with chemoradiotherapy, Sarcandra glabra contributes to the tumor regression of patients with stage Ⅲ and Ⅳa nasopharyngeal carcinoma and at-tenuation of chemoradiotherapy side reaction.

Objective To explore the effect of the single maximum of alcohol consumption on vomiting induced by chemotherapy in male patients with nasopharyngeal carcinoma.Methods According to the single maximum of alcohol consumption,48 cases of male patients with nasopharyngeal carcinoma were divided into two groups:group A (small capacity for liquor group 10-50 g),group B (large capacity for liquor group ＞50 g).The amount of alcohol intake was assessed by a questionnaire.The responses of vomiting and the effects of antiemetic therapy between the two groups during the first cycle after induction chemotherapy were observed.Results The incidence rates of vomiting induced by chemotherapy between the two groups were 52.0％ and 17.4％,respectively.There were significant differences between the two groups (x2 =6.273,P ＜0.05).The incidence rates of grade 0,1,2 and 3 of vomiting in group A were 48.0％,20.0％,20.0％,12.0％,in group B were 82.6％,13.0％,4.4％,O,respectively.There were significant differences between the two groups (x2 =6.013,P =0.024).In the two groups,the complete control rate for acute vomit were 48.0％ and 82.6％ (x2 =6.273,P =0.012),for delayed vomit were 36.0％ and 65.2％ (x2 =4.090,P =0.043).There were also significant differences between the two groups.Conclusion With the increasing of capacity for liquor,the incidence of vomiting is significantly reduced,the degree of vomiting is distinctly alleviated,and the antiemetic efficacy is distinctly increased.

Objective To evaluate the short- and long-term efficacy of microwave hyperthermia combined with chemoradiotherapy in treating metastatic nasopharyngeal carcinoma to the cervical lymph nodes. Methods A total of 154 cases of stage N2-N3 nasopharyngeal carcinoma (1992 stage system) were randomized into two groups: group A (76 cases, treated with microwave hyperthermia combined with chemoradiotherapy) and group B (78 ca-ses, treated with chemoradiotherapy alone). Both groups received 1 to 2 cycles of chemotherappy with cisplatin and 5-fluorouracil and then received regular radiotherapy. The total doses of radiotherapy were 70-78 Gy/35-39 f, 47-51 d for the primary loci of nasopharynx and 68-72 Gy/34-36 f,46-50 d for the metastatic loci in the neck. Group A received microwave hyperthermia on the metastatic cervical node at the beginning of radiotherapy, with the micro-wave hyperthermia administered for 45 min every time,two times a week, totaling 8 to 14 times. Results The complete extinction rates of neck metastatic carcinoma were 80.3% and 61.5% , respectively, in groups A and B (P<0.05). The overall response rates of neck metastasis in the two groups were 100% and 96.2% , respective-ly. When the cervical lymph node metastasis disappeared, the radiotherapy doses in group A and B were (45.8 ± 5.46 ) Gy and (58.8±5.03 ) Gy, respectively (P<0.01). The 5-year local control rates of cervical lymph node in group A and B were 97.4% and 76.9%(P<0.05 ), respectively. The one-, three- and five- year survival rates were 97.4% , 76.3% and 59.2% respectively, in group A, versus 93.6% (P>0.05) ; and 52.6% (P< 0.01) and 41.0% (P<0.05), respectively, in group B. Conclusions Microwave hyperthermia combined with chemoradiotherapy can elevate the complete extinction rate of cervical lymph node metastasis of nasopharyngeal carcinoma and reduce the radiotherapy dose needed of effective control. The 5-year local control rate of cervical lymph node metastasis in combined therapy group is superior to that in the chemoradiotherapy alone group,and can elevate the long-term survival rate of patients.

Objective: To investigate the relationship between type 2 diabetes mellitus (T2DM) and the pathogenesis and metastasis of colorectal cancer. Methods: A case-control study was performed to compare 852 colorectal cancer patients with 940 controls (patients without cancer) recruited from 2001 to 2006, with respect to their sex, cancer subsite, the course of T2DM, hepatic metastasis, smoking and drinking. Correlated risk factors were analyzed. Results: The risk of colorectal cancer was increased in patients with T2DM and the relative risk (OR) was 2.466. The OR of male patients was higher than that of female patients, but with no significant difference (2.775 vs 2.070, P=0.394). The incidence of T2DM in patients with left hemicolon cancer was higher than that in those with right hemicolon cancer and rectal cancer, but with no significant difference between them. The colorectal cancer risk in T2DM patients with a DM course of 10 ～ 20 years was the highest, and the OR was 4.696. The rate of hepatic metastasis was higher in T2DM patients with colorectal cancer than that in celorectal cancer patients without T2DM and the OR was 2.888. Conclusion: T2DM may be one of the important pathogenic risk factors for colorectal cancer. The OR is increased with the extension of DM course within 20 years. Colorectal cancer patients with T2DM may be more prone to hepatic metastasis.

Objective To explore the protective effect of Tea polyphenols(TP) on radiation injury in submandibular glands. Methods Sixty rats were randomly divided into radiation group(R-group) and tea polyphenols combined radiation group (TPR-group), both groups were irradiated with a single exposure of 15 Gy γ-rays delivered to the head and neck area. The rats were intragastrically administered with normal sodium or TP from 14 days before radiation to the experiment ended. On day 3, day 6 and day 30 after radiation, ten submandibular glands glands were taken from each groups. TUNEL method was used to examine the apoptosis of submandibular glands cells and immunohistochemical technique was used to detect the Bcl-2 and the Bax expression in the glands. The morphologic changes of submandibular glands were observed by transmission electron microscopy. Results Apoptosis index in the cell of submandibular glands were significant decreased on days 3, days 6 and days 30 after irradiation, compared with R-group ( F = 56.383, P ＜ 0.01 ). Expression of Bcl-2 and Bax were not significant difference between the two groups. The lesions of submandibular glands in TPR-group were lighter and the apoptosis in cell nuclear were not typical than that of R-group from electron microscope study. Conclusion TP could protect the sumandibular glands against radiation injuries and the mechanism might be realized with the anti-apoptosis in the glands cell.