Nitrogen-containing bisphosphonates exert antitumor activity through induction of apoptosis or inhibition of proliferation, invasion and migration in tumor cells, inhibition of angiogenesis and promotion of immune surveillance. Animal models show that bisphosphonates delay visceral metastasis progression. Both ABCSG-12 and ZOFAST trial have demonstrated that Zoledronate reduced breast cancer recurrence risks. Bisphosphonates are synergistic with a variety of chemotherapeutics, and sequential dosing is more effective, which may be attributable to increased uptake of bisphosphonates by tumor cells after pretreatment with chemotherapeutics. Metronomic administration of bisphophonates after chemotherapy provides bisphosphonates the promising antineoplatic potential.

Objective To investigate the association of human papilloma virus (HPV) typing and p53 expression with radiosensitivity in patients with cervical cancer.Methods A total of 80 patients with cervical cancer from 2014 to 2016 were enrolled,and among these patients,40 had stage Ⅰ B+ Ⅱ A disease and 40 had stage Ⅱ B +ⅢA disease.HPV genotype was identified and p53 expression was measured.All the patients underwent external and internal pelvic irradiation alone,and the correlation between short-term therapeutic effect and HPV typing/p53 expression was analyzed.The chi-square test or the Fisher's exact test was used for statistical analysis,and Spearman rank correlation analysis was also performed.Results The radiotherapy-insensitive (stable disease+progressive disease) group had higher p53 positive rates than the radiotherapy-sensitive (complete response+partial response) group (stage Ⅰ B+ Ⅱ:100％ vs.80.0％,P=0.044;stage Ⅱ B+ⅢA:100％ vs.90.0％,P=0.013).The expression of p53 was negatively correlated with radiosensitivity (r =-0.427,P =0.000).In the radiotherapy-insensitive group of patients with stage I B + Ⅱ and Ⅱ B +Ⅲ A,the rate of HPV multiple infections was higher than that of single subtype infection (65.0％/95.0％ vs.35.0％/5.0％,P=0.004 and 0.003),while in the radiotherapy-sensitive group,the rate of single subtype infection was higher than that of multiple infections (85.0％/60.0％ vs.15.0％/40.0％,P=0.004 and 0.003).The highest detection rate of HPV16 was 66.3％ in all patients,and the highest detection rate of HPV18 was 60.0％ in the radiotherapy-insensitive group.Conclusions High expression of p53 is associated with radioresistance in patients with cervical cancer.Patients with HPV muhiple infections have poor radiosensitivity,and HPV16 is the most common subtype in dual infection.Among patients who do not achieve remission after radiotherapy,HPV multiple infections with HPV18 as the main pathogen has the highest detection rate.

Objective:To explore the rules of acupoint sticking therapy based on data mining technology for the treatment of angina pectoris of coronary heart diseases, and to provide a reference for guiding acupoint selection and rational use of Chinese medicine.Methods:To search for the clinical research literature of acupoints for the treatment of angina pectoris of coronary heart diseases from China Academic Journal Database (Wanfang Data), China National Knowledge Resources Database (CNKI), China biomedical literature service system (SinoMed) and Chinese science and technology journal database (Chongqing VIP) dated from January 31, 2020. Using Microsoft Excel 2016, SPSS Statistics 21.0, and SPSS Modeler 14.2 statistical software as tools to conduct association analysis and cluster analysis on those acupoints and Chinese medicine.Results:A total of 102 acupoints application prescriptions were included, involving 38 acupoints. The top 5 frequently used acupoints were Danzhong (RN17), Neiguan (PC6), Xinshu (BL15), Zusanli (ST36), and Zhiyang (DU9). The top 5 acupuncture were Neiguan (PC6)- Sanyinjiao (SP6), Xinshu (BL15)- Geshu (BL17), Danzhong (RN17)- Geshu (BL17), Danzhong (RN17)- Jueyinshu (BL14), Danzhong (RN17)- Geshu (BL17) and Xinshu (BL15). There are 102 prescriptions of applied medicines with 88 kinds of Chinese medicine. The top 5 frequently used Chinese medicines were Chuanxiong Rhizoma, Borneolum Syntheticum, Salviae Miltiorrhizae Radix et Rhizoma, Olibanum, Santali Albi Lignum, the top three drug pairs were Chuanxiong Rhizoma- Cinnamomi Cortex, Allii Macrostemonis Bulbus- Trichosanthis Fructus, Olibanum- Myrrha. Conclusion:The commonly used single points to treat angina pectoris of coronary heart disease are Danzhong, and usually combined with Neiguan and Xinshu, and the acupoints along the Urinary Bladder Meridian of Foot- Taiyang are used frequently; the Chinese medicines are mainly used for activating blood circulation, genenrally reflects the therapeutic principle of removing blood stasis, dredging collaterals and relieving pain.

Objective To explore the value of human epididymis protein 4(HE4),cancer antigen 125(CA125) and the risk of ovarian malignancy algorithm(ROMA) in the diagnosis of ovarian cancer.Methods Electrochemical luminescence and Enzymelinked immunosorbent assay (ELISA) were used to determine the levels of serum HE4,CA125 in 56 patients with ovarian carcinoma,73 cases of ovarian benign tumor and 50 health women,and the ROMA was calculated by HE4 and CA125 levels depending on the menopause state,drawing the receiver operating characteristics(ROC) curve and calculating the area under the curve(AUC).Results The average levels of the HE4,CA125 and the value of the ROMA were (345.33±605.03)pmol/L,(701.46±1 500.30) U/mL,(58.72±31.00) ％ in the ovarian carcinoma group,(53.84± 14.68)pmol/L,(44.25±45.81)U/mL,(10.80± 6.75) ％ in the ovarian benign tumor group,and (46.03±10.26)pmol/L,(17.39±10.64)U/mL,(6.92±3.85)％ in the health control group respectively,compared with the benign tumor group and the health control group,the ovarian carcinoma group were higher in HE4,CA125 and the ROMA value,and the difference were significantly (P＜0.05),whereas compared in the ovarian benign group and the health group,except the CA125 was higher in the benign group and the difference had statistical significance(P＜0.05),the HE4 level and the value of the ROMA had no statistical significance(P＞0.05).The sensitivities of the HE4,CA125 and ROMA were 71.43％,76.79 ％,89.28％,the specificities were 93.15 ％,53.42％,94.52 ％ and the ROC-AUCs were 0.930,0.809,0.937 respectively.When the specificity for the diagnosis of the ovarian carcinoma was 95.00％,the sensitivities of the HE4,CA125 and ROMA were 80.40％,53.60％,83.90％ respectively.Conclusion HE4 and CA125 combined detection to calculate the ROMA can elevate the sensitivity and specificity for the ovarian carcinoma diagnosis.

Objective To study the influence of different positions in the isokinetic muscle test of knees by CON-TREX Biomechanical Test and Training System, so as to select the suitable conditions for forensic identification of muscle strength test. Methods Fifty-two healthy volunteers joined the isokinetic muscle strength test in unfixed and fixed position, respectively and in two kinds of angular speed (60°/s and 30°/s). The differences of peak torque (PT) and peak torque angle (PTA) between bilateral knee flexor and extensor were statistically analyzed. Results In the unfixed position, under the two speed, there was statistically significant difference in PT between bilateral knee flexor and extensor (P<0.05);while in the fixed position, under the two speed, there was no statistically significant difference (P>0.05). In any kind of conditions, the PTA of bilateral knee flexor and extensor did not have statistically signifi-cant difference(P>0.05). Conclusion The position of the subject influences the results of PT. So the po-sition of subject in knees isokinetic muscle test should be regulated.

Objective To study the application of isokinetic muscle testing in identification of the faked paralysis to provide scientific data for establishing a standard systemof muscle strength in forensic medicine identification. Methods Fifty-seven patients with bone fracture or nerve damage as damaged group and 128 normal subjects pretended paralysis as faked paralyzed group were included in this study. Isokinetic muscle testing was performed on bilateral knees of all subjects in the two groups. The peak torque (PT) and peak torque angle (PTA ) were compared between both sides in each group. The fea-tures of torque-time graph of two groups were classified. Results In the damaged group, the differences of PTbetween two sides of flexors and extensors were statistically significant (P<0.05), while the dif-ferences of PTA were not statistically significant (P>0.05). In faked paralyzed group, the differences of PTand PTA between two sides of flexors and extensors were both statistically significant (P<0.05). The torque-time graph of damaged knee presented mostly as single lead peak, while torque-time graph of the faked paralyzed knee presented mostly as multiple peaks. Conclusion The feature of torque-time graph could be useful to identify the faked paralyzed extremities in forensic authentication.

Objective To evaluate the value of 3.0T MRI diffusion-weighted imaging (DWI)in diagnosis and staging of cervical cancer. Methods A total of 65 cervical carcinoma patients were enrolled and performed T2 WI,DWI and LAVA-Flex dynamic contrast-enhancement before operation.MR images were analyzed by two radiologists to evaluate the staging performance.Results All the cervical cancers were detected in DWI,while three lesions were missed in T2 WI and one lesion was missed in LAVA-Flex dynamic contrast-enhanced MRI.Respectively,the accuracy of staging with DWI,T2 WI and LAVA-Flex dynamic contrast-enhanced MRI was 90.8%,78.5%and 87.7%.Accuracy of DWI was significantly higher than that of T2 WI(P =0.04),while there was no significant difference of accuracy between DWI and LAVA-Flex dynamic contrast-enhanced sequence (P =0.39).Conclusion DWI shows relatively higher accuracy than T2 WI in the staging of cervical cancer which makes it an ideal method to replace LAVA-Flex dynamic contrast-enhanced MRI for exact staging.

Pancreas transplantation alone(PTA) which dose not popularize in clinical therapy the insulin-dependent diabete mellitus patients who have not occurred end-stage complications,which was resulted in not only the technical but also the sociological and ethnics reasons.There are some reasons to restrict the development of clinical PTA at present.In this article the sociological and ethnics reasons to circumscribe the development of clinical PTA were discussed.

OBJECTIVEThis study aimed to investigate the effects of different tooth preparations on the fracture strength and pattern of failure of teeth with severe wedge-shaped defect restored with post and core crowns.

METHODSAccording to whether the teeth above the wedge-shaped defect was removed (represented by B) or not (represented by A), the ferrule next to the wedge-shaped defect was prepared (represented by D) or not (represented by C), the cast post-and-core was chosen (represented by E) or glass-fiber post and resin core was chosen (represented by F). A total of 64 human mandibular premolar teeth were randomly divided into 8 groups: A1-1 (A + C + E), A1-2 (A + C + F), A2-1 (A + D + E), A2-2 (A + D + F), B1-1 (B + C + E), B1-2 (B + C + F), B2-1 (B + D + E), B2-2 (B + D + F), each group 8 teeth. All the teeth were prepared and restored accordingly and then mounted on an electronic pressure universal testing machine. The maximum fracture strength and the patterns of failure were recorded.

RESULTS1) The fracture strength of Group A1-1 > that of Group B1-1, Group A1-2 > Group B1-2, Group B2-1 > Group B1-1, and Group B2-1 > Group B2-2 with significant differences (P < 0.05). 2) The patterns of repairable fracture in Group A1-2 and B1-2 were both 37.5%, and that of the other groups were 0. Furthermore, the difference was significant, and Group A1-2 and B1-2 were higher than other groups.

CONCLUSIONThe maintenance of the overhang above the severe wedge-shaped defect aid in the improvement of the fracture strength of the tooth restored with post and core crown. The ferrule of the wedge-shaped defect is not recommended to be prepared. Furthermore, the glass-fiber post and resin core is favorable for the re-repair of the teeth than the cast post and core.

Objective To investigate the prevalence and risk factors of postpartum depression among female immigrants at Tianhe district of Guangzhou. Methods A total of 2021 migrant women postpartum in three hospitals at Tianhe district of Guangzhou were screened with Center for Epidemiological Survey Depression Scale , (CES-D), Social Support Rating Scale(SSRS) and self-made related factors questionnaire from May to December, 2013. Results This study showed postpartum depression affected 18.31% of migrant women at Tianhe district of Guangzhou. Unconditional logistic regression analysis showed a significant correlation of PPD with birth place , residence time,newborn disease,fetus gender and household income (P < 0.05). Multivariate logistic regression analysis identified birth place,residence time,newborn disease,fetus gender as the risk factors for PPD,household income was negatively correlated with the incidence of PPD with OR value of 0.680;Compared with healthy female immigrants, the total score of social support rating scale,the score of objective support,subjective support and social utilization degree were significantly reduced respectively in female immigrants with PPD. Conclusion The prevalence of PPD was high at Tianhe district of Guangzhou,health education and comprehensive social support system should be offered in order to prevent PPD.