Background and purpose:Backgrounds and Objective: Oxaliplatin is a third-generation platinum compound,there are some distinct differeuces in mechanism between cisplatin and oxaliplatin,and oxaliplatin is less toxic Poorly differentiated cartinoma is the most common histological type,for nasopharyngeal carcinoma,although radiotherapy is the basic therapeutic approach to nasopharyngeal carcinoma,chemotherapy is also important for recurrent and metastatic nasopharyngeal carcinoma,so in this work we analyzed the effects of oxaliplatin on nasopharyngeal carcinoma cell lines in vitro.Methods:CNE2 was incubated with oxaliplatin at various concentrations and times,cell growth inhibition was assessed by MTT-microculture tetrazolium assay,cell-cycle kinetics and apoptosis were analyzed by flow cytometry and microscopy transmission electron.Results:Growth of CNE2 cells was significantly inhibited in a dose-dependent and time-dependment fashion.The inhibition of cell growth inhibition was(95.6?0.7)% after incubation with 100 ug/ml oxaliplatin for 48 hours,the cell was arrested at G_(2)/M and apoptosis was induced.When CNE2 cells were treated with oxaliplatin at the concentration of 0、0.03、4.0、100 ?g/ml,the rates of CNE2 cell apoptosis were(0.19?0.17)% 、(0.37?0.09)%、(5.50?1.08)%、(9.43?0.09)%,respectively.24 hours after 20 ?g/ml the CNE2 cells were characterized by chromatin condensation,chromatin crescent formation,nucleus fragmentation and apoptosis body by transmission electron microscopy.Conclusions:Oxaliplatin suppresses the growth of CNE2 cells in vitro by causing cell-cycle arrest and cell apoptosis.

Objective To explore the expression of FLT3 on the cells from acute myeloblastic leukemia (AML)and its clinical signficance.Methods The expression of FLT3 from 80 AML cases was measured by FISH.All cases were indentified by karyotyping,40 cases were normal karyotye,and the other 40 cases were abnormal.Results The FLT3 expression level was different in different AML cases.The expression rate in normal karyotype cases was 5.0%,but in abnormal cases 30.7%,in refractory relapse cases 43.3%,in continual complete remission cases 4.5%.The patients’DFS (Disease-Free survival)and OS (overall survival)without FLT3 expression were 65% and 86% in 24 months’following investigation,but the patients’ DFS and OS with FLT3 expression were 20% and 40% respectively.The difference was distinct between them(P<0.05). Conclusion FLT3 can be thought as a new marker for worse prognosis of AML patients,and its expression level is associat-ed with maglignacy-grade.

Objective To explore the inhibitory effect of anti-miRNA-214 oligonucleotide on leukemia U937 cells.Methods U937 cells were transfected with anit-miRNA-214 oligonucleotide,cell viability was analyzed by MTT assay.Apoptosis was detected by flow cytometry.The expression of miRNA214 in the U937 cells were measured by real-time PCR.Results The MTT result showed that the growth of U937 cells treated with AMO-miRNA-214 in 24 h,48 h,72 h was obviously inhibited (0.812±0.001,0.770±0.002,0.541±0.001),compared with those in control groups (randomized control 1.011±0.002,1.112±0.003,1.111±0.003,blank control 1.112±0.001,1.023±0.001,1.101±0.001),the differences had statistical significance (F =2.782,3.659,2.735,P =0.021,0.018,0.036).The flow cytometry results showed that the apoptosis detected in AMO-miRNA-214 group at 48 h,72 h (15.12±0.02,19.14±0.01) had significant differences compared with those in control groups (randomized control 2.04±0.02,2.45±0.03,blank control 1.19±0.02,2.02±0.01) (F =3.683,3.762,P =0.013,0.015).The expression of miRNA-214 was downregulated significantly in U937 cells after treated with oligonucleotide (31.1±0.2) compared with those in control groups (randomized control 25.8±0.1,blank control 25.6±0.2) (P ＜ 0.05).Conclusion Targeted inhibition of miRNA-214 with oligonucleotide can suppress U937 cells growth and induce apoptosis.

Objective To study the clinical characteristics of elderly sleep apnea syndrome (ASA). Methods 329 SAS patients diagnosed by 7-hour polysomnography(PSG) were classified into the aged and the middle aged groups. Results Both the body mass index(BMI) and neck circumference were significantly lower in the aged group than those in the middle aged group(P

Objective To evaluate the application of domestic probe fluorescence in situ hybridization (FISH) in prenatal diagnosis on uncultured amniocytes aneuploid. Methods One thousand three hundred and sixty-nine uncultured amniocytes (16-24 gestational weeks) from 37 hospitals in China were selected for prenatal diagnosis. 5 chromosomes (21, 13, 18, X and Y) were detected with muhicolor FISH. In the mean time, cytogenetic karyotype analysis was performed as control. Results Of all the samples, 1361 samples were successfully tested by FISH, the rate of successful detection was 99.42% (1361/1369). Thirty-five samples were shown with abnormal karyotypes by domestic FISH probe, the abnormal rate is 2. 57% (35/1361 ), including trisomy 21 (22 samples), trisomy 13 (4 samples), trisomy 18(6 samples), X0 (1 sample) and XXY (2 samples). Results of both FISH and cytogenetic karyotype analysis exhibited extreme concordance. Conclusion Domestic FISH probe used in prenatal diagnosis on uncultured aminiocytes showed the following advantages, such as highly efficient, low cost, small amounts of samples needed and reliable results.

Objective To study the altered radiobiological effect of simulative intensity-modulated radiotherapy (SIMR) in cultured human nasopharyngeal carcinoma (NPC) cells and the related mechanism. Methods Single cell suspension of exponentially growing CNE-2 cells, a poor differentiated NPC cell line, was seeded and cultured for 12 hours, then the cells were irradiated in two different models by 6 MV X-ray beams at 3 Gy/min. In single fraction irradiation (SFR) model, cells were irradiated a single fraction of 0, 2, 4, 6 or 8 Gy within 0 to 3 minutes. In S1MR model, cells were irradiated 0, 2, 4, 6 or 8 Gy in 5 frac-tions with interval of 8.0-8.5 minutes between. Clonogenic assay was performed to determine the radiosen-sitivity. Cellular apoptosis was measured by flow cytometry. RT-PCR was used to detect mRNA expressions of Bax and Bcl-2, Respectively. Results Compared with SFR group, the survival fraction in SIMR group was higher at all the dose levels. The values of α, β, D0 and Dq were higher in SIMR group than in SFR group. At dose levels of 2 Gy, 4 Gy and 6 Gy, The early and late apoptotic cells in SIMR group were lower than in SFR group (21.20%: 15.89%, F=18.51, P=0.020;13.00%: 10.20, F=15.67, P=0.040).The mRNA expression of Bax was upregulated in a dose-dependent manner in the both groups. Compared with SFR group, the mRNA expression of Bax in SIMR group was lower at all the dose levels (Mean value of 76.75% : 62.50%, F =36.57, P =0.000). Bcl-2 mRNA expression at every dose level had no significant difference between the two groups (Mean value of 29.25% : 29.75%, F=0.74, P=0.800). Conclusions Prolonged delivery time in SIMR model can decrease the radiobiological effects.

Bile collected from 28 cases with various hepatic or biliary diseases during operation was assayed for the ?-glucuronidase level. In Group I consisting of 14 patients with primary intrahepatic stone, the ?-glucuronidase level averaged 2250.67 u/dl, while in Group II consisting of 14 patieats with other hepatic diseases, it averaged only 463.99 u/dl(P = 0.01).The patients of both groups showed a declination of the enzyme level gostoperatively, but in Group I, the enzyme level raised with other hepatic diseases, he T-tube. The AMPS and MP contents of the bile .remarkable inhibitory effect on two substances exert their function in positive remarkable inhibitory effect on at pH4,6. It is believed that. ?-glucuronidase, Group 11 consisting the results of thisles in the reformation of biliary stones reformation biliaryWhen ?-glucuronidase level is lower than 200u/dl.Chinese traditional prescriptions with glycynrhizae liquid extract shows a remarkable inhibitory effect on this enzyme. In Chinese traditonal prescriptions, the drugs which can promote circulation and clear deposit are usually added. According to the results of this study, the authors suggest that the therapeutic effect of glycyrrhizae be emphasized.

AIM: To investigate the effects of testosterone on endothelial function and intimal proliferation after balloon injury in male rabbit abdominal aorta. METHODS: 24 male New Zealand white rabbits were divided randomly into three groups: control group ( n =8, sham castration), hypotestosteronemia group ( n =8,castration) and testosterone replacement group (n =8,castration +testosterone undecanoate intramuscular injection,14 mg/kg). Abdominal aorta was injured with 3 mm PTCA balloon after testosterone undecanoate had been injected for three days. Two weeks later, blood samples were obtained for detection of plasma testosterone, lipids, metabolic product of nitric oxide (NO - 2/NO - 3), superoxide dismutase(SOD) and malondialdehyde (MDA),and all the abdominal aorta were excised to be analyzed by computer. RESULTS: The intimal area of hypotestosteronemia group were significantly larger than that of other two groups( P

Objective To observe the clinical efficacy of acupuncture and moxibustion combined with cognitive training in treating cognitive impairment after traumatic brain injury (TBI). MethodsSixty patients were recruited into the study and randomly divided into the control group and the treatment group according to the MINIMIZE software. Patients in the control group were treated with cognitive training and regular treatment. Besides the traditional treatment, patients in the treatment group were additionally treated with acupuncture and moxibution. The treatment lasted four weeks. Mini-Mental State Examination (MMSE) and Loewenstein Occupational Therapy Cognitive Assessment (LOTCA) were applied to evaluate the patients’ cognitive function before and after the treatment.Results In the end, there were 27 patients in the control group and 28 patients in the treatment group, because 5 patients withdrew from the study. After treatment, scores of MMSE, LOTCA and their sub-items in the control group and the treatment group increased significantly (P<0.05), and the scores in the treatment group were higher than the control group (P<0.05).Conclusion Combination of acupuncture, moxibution, and cognitive training could help patients after TBI to increase the scores of MMSE and LOTCA, and improve the cognitive impairment caused by TBI. Its therapeutic effect is superior than the pure cognitive training.

Objective To explore the curative effect of ursodeoxycholi acid on retinopathy of prematurity (ROP) caused by high concentration of oxygen in newborn rats. Methods The model of ROP was established. Neonatal rats were divided into normal control group, ROP model group, low dose ursodeoxycholi acid treatment group (10mg/kg) and high dose ursodeoxycholi acid treatment group (40mg/kg). Rats were sacrificed at days 17. The new retinal vessels were observed and counted under lfuorescence microscope. Results The new retinal vessels in ROP rats were hyperplastic, twisted and unevenly distributed. There was signiifcant difference in the number of new retinal vessels among different groups (P=0.000). The number of new retinal vessels of rats in ROP group, low-dose group and high-dose group was signiifcantly more than that in control group (P=0.000). The number of new retinal vessels in low-dose group and high-dose group was significantly less than that in ROP group (P<0.05). The number of new retinal vessels in high-dose group was less than that in low-dose group (P>0.05). Conclusions Ursodeoxycholi acid could inhibit the angiogenesis of retina and could have curative effect on ROP.