Under the condition of the inevitable development trend of teachers' specialization in the world,this paper discusses the professional quality and existing problems of the medical physics teachers and the development ways to realize the teachers' specialization in medical physics.

Objective To explore the clinical effect of single use or combination of dydrogesterone and progestin in treatment of threatened abortion caused by uteal phase defect.Methods Totally 186 patients with threatened abortion caused by uteal phase defect accepted in The First Affiliated Hospital of Henan from April 2015 to April 2016 were selected and randomly divided into groups A,B,and C with 62 cases in each group.Patients in group A were given dydrogesterone,those in group B were given progestin,and those in group C were given dydrogesterone combined with progestin.Then the clinical effect,expression of hormones,treatment outcome,and adverse reaction were observed and compared.Results The total effective rates of groups A and B were 72.58％ and 66.13％,respectively,which were obviously lower than 90.32％ of group C with statistically significance (P ＜0.05).The expression levels of P,E2,and hCG of three groups after treatment were higher than those before,those in group C were the highest among them (P ＜ 0.05).The successful treatment rates of groups A,B,and C were 83.87％,82.26％,and 95.16％,respectively,which had no great difference.Conclusion Combination use of dydrogesterone and progestin has better effective rate in treatment of threatened abortion caused by uteal phase defect compared to single use of these two drugs,which has good safety and worth of clinical application.

Objective To investigate the effect of mixed application of lecture-based learning and flipped classroom and problem-based learning in microbiology teaching. Methods The five-year program students of Grade 2013 and Grade 2014 were randomly divided into two groups, and the experimental group (48 students in the teaching reform class) carried out the blended teaching, while the contrast group (48 students of parallel class) carried on the traditional teaching. After the lecture, the teaching effect of the hybrid teaching method and traditional teaching method was analyzed after the theoretical and the experi-mental operation test were adopted, and the four part questionnaire surveys including the integrated use of knowledge, active classroom atmosphere, innovation ability and teaching satisfaction were proceeded in each group. The data of each group was analyzed by t test analysis with SPSS 19.0 respectively. Results The theory test scores of experimental group was (90.16±3.14), which was higher than the control group (82.33± 4.21). The difference between them was very significant (P=0.000). Survey results showed that the integrated use of knowledge, active classroom atmosphere, innovation ability and teaching satisfaction were higher than traditional group. The difference was statistically considered significant (P<0.01). Conclusion Hybrid teaching method is very good for training and development of students' comprehensive quality and ability. It has important significance in improving the students' score.

This paper discusses the problems of optimizing teaching of medical microbiol-ogy on the aspects of optimizing teaching matters and teaching means,of integrating teaching with learning,and training teachers,etc. to improve the teaching quality in microbiology through some innovational measures.

Objective:To study the antitumor activity and immunological mechanisms of rBCG including GM-CSF and EB virus LMP2A gene fusion.Methods: Animal models of EB virus-positive tumors was built.The formation time of tumors in mice,survival time,tumor weight was analyzed to detect rBCG anti-tumor activity;ELISA method was used to detect the specific antibodies which was produced in the mice stimulated by rBCG,specific CTL killing effect was detected by lactic dehydrogenase assay,ELISPOT was used to assay the secretion of IFN-γand flow cytometry, HE staining of tumor tissue was used to detected lymphocyte infiltration in mice immunized with recombinant BCG.Statistical methods were used for rBCG immunization effect preliminary analysis and evaluation.Results:Comparing to other control,tumor formation time was significantly delayed and tumor growth was slow, survival time of mice prolonged .ELISA test results showed that the rBCG immunization groups of mice could produce specific IgG antibodies of GM-CSF and LMP2A.Specific CTL activity was detected in mice immunized with rBCG.IFN-γsecretion was detected by ELISPOT method, flow cytometry and morphological observation detected tumor tissue infiltration of lymphocytes growth in mice immunized with rBCG.Conclusion:The rBCG induced a humoral and cellular immune responses and induced C57BL/6 mice to produce a strong anti-tumor effect and the EB virus-positive tumor cells was significantly inhibited.

Objective To investigate the efficacy and safety of fluzopril in the treatment of platinum-sensitive recurrent epithelial ovarian cancer.Methods A total of 107 patients with platinum-sensitive recurrent epithelial ovarian cancer admitted to the First Affiliated Hospital of Henan University of Science and Technology from January 2019 to December 2020 were selected as the subjects.According to treatment methods,the patients were divided into control group(n=50)and observation group(n=57).The patients in the control group received a first-line chemotherapy regimen of paclitaxel combined with platinum:on the first day,intravenous infusion with paclitaxel injection 135 mg·m-2 was administered;on day 1-3,intravenous drip with cisplatin 50-60 mg·m-2 was administered;21 days was one chemotherapy cycle.On the basis of the treatment in the control group,the patients in the observation group were given fluzoparide capsules orally,150 mg each time,twice a day,and the treatment continued until disease progression or unacceptable toxic reactions occurred;21 days was one chemotherapy cycle.The patients in both groups received three consecutive chemotherapy cycles.The clinical efficacy,prognosis within 2 years after chemotherapy,Karnofsky Performance Status(KPS)score before and after chemotherapy,and incidence of adverse reactions during chemotherapy of patients between the two groups were compared.Results After 3 cycles of chemo-therapy,the disease control rate and objective remission rate of patients in the observation group were significantly higher than those in the control group(x2=5.420,4.220;P＜0.05).Following up to 24 months,the progression free survival of patients in the observation group was significantly longer than that in the control group(t=6.702,P＜0.05);there was no statistically significant difference in 1-year survival rate of patients between the two groups(x2=0.415,P＞0.05);the 2-year survival rate of patients in the observation group was significantly higher than that in the control group(x2=5.420,P＜0.05).Before chemotherapy,there was no statistically significant difference in KPS scores of patients between the two groups(t=0.537,P＞0.05);the KPS scores of patients in the two groups after three cycles of chemotherapy were significantly higher than those before chemotherapy(t=5.604,9.378;P＜0.05);after three cycles of chemotherapy,the KPS score of patients in the observation group was significantly higher than that in the control group(t=2.608,P＜0.05).The patients in both groups experienced hematological and non-hematological adverse reactions during chemotherapy;the main hematological adverse reactions was bone marrow suppression,most of which were Ⅲ ° and Ⅳ ° adverse reactions;the non-hematological adverse reactions included alo-pecia,gastrointestinal reactions,and liver and kidney dysfunction,most of which were Ⅰ°and Ⅱ°adverse reactions.There were no chemotherapy related deaths of patients in both groups.The incidence rates of anemia,thrombocytopenia,neutropenia,leuko-penia,lymphopenia,nausea,vomiting,fatigue,loss of appetite,hair loss,elevated serum creatinine,and elevated alanine amino-transferase(ALT)of patients during chemotherapy in the control group were 68.00％(34/50),72.00％(36/50),58.00％(29/50),68.00％(34/50),22.00％(11/50),26.00％(13/50),24.00％(12/50),46.00％(23/50),30.00％(15/50),50.00％(25/50),20.00％(10/50),10.00％(5/50),respectively;the incidence rates of anemia,thrombocytopenia,neutropenia,leukopenia,lymphopenia,nausea,vomiting,fatigue,loss of appetite,hair loss,elevated serum creatinine,and elevated ALT of patients during chemotherapy in the observation group were 61.40％(35/57),63.16％(36/57),49.12％(28/57),52.63％(30/57),21.05％(12/57),22.81％(13/57),24.56％(14/57),42.11％(24/57),29.82％(17/57),47.37％(27/57),21.05％(12/57),10.53％(6/57),respectively.There was no statistically significant difference in the incidences of anemia,thrombocytopenia,neutropenia,leukopenia,lymphopenia,nausea,vomiting,fatigue,loss of appetite,hair loss,elevated serum creatinine,and elevated ALT of patients during chemotherapy between the control group and the observation group(x2=0.047,0.000,0.041,0.694,0.056,0.000,0.208,0.041,0.184,0.160,0.233,0.102;P＞0.05).Conclusion For patients with platinum-sensitive recurrent ovarian cancer,the combination of paclitaxel and platinum chemo-therapy combined with fluzopril can effectively improve the anti-tumor effect,prolong the progression-free survival,improve survival rate and quality of life,and the adverse reactions are controllable.

Objective To compare the clinical efficacy and safety between recombinant human parathyroid hormone ( rhPTH) ( 1 -34) and elcatonin in the treatment of postmenopausal women with osteoporosis in China.Methods This 6 month, multicenter, randomized and controlled study enrolled 205 postmenopausal women with osteoporosis.They were randomized to receive either rhPTH (1 -34) 20 μg (200 U) daily or elcatonin 20 U weekly.Lumbar spine (L1-4 ) and femoral neck bone mineral density (BMD) and biochemical markers of bone turnover were measured. In the meantime adverse events were recorded. Results The results showed that both rhPTH ( 1 -34) and elcatonin increased L1-4 BMD significantly at the endpoint of the study, but femoral neck BMD did not change significantly.From baseline to endpoint, BMD of L1-4 and femoral neck in the rhPTH( 1-34) group increased by 5.51% (P <0.01) and 0.65% (P >0.05), but BMD of L1-4 and femoral neck in elcatonin group increased by 1.55% (P <0.05) and 0.11% (P>0.05).Moreover, the rhPTH(1-34) group had better improvement in L1-4 BMD than the elcatonin group at 3, 6 months, but there was no difference of BMD in these two groups with regard to femoral neck.There were greater mean increases of the bone markers in the rhPTH( 1-34) group than those in the elcatonin group at 3, 6 months [serum bone-specific alkaline phosphatase ( BSAP) 36.79% vs 0.31% ; 92.42% vs -0.17% ; the ratio of urine N-telopeptide of type I collagen and creatinine (NTX/Cr) 48.91% vs -5.32% ; 68.82% vs - 10.86%].Both kinds of treatment were well tolerated and there were no differences between the two groups in the rates of adverse events and serious adverse events.Conclusion It is concluded that rhPTH (1 -34) has more positive effects on bone formation than elcatonin as shown by the greater increments of L1-4 BMD and bone formation markers and the less occurrence of adverse events as well as no significant change in hepatic, renal or hemopoietic function.

Objective Recombinant human parathyroid hormone(1-34) [ rhPTH(1-34)] is the unique anabolic substance acting on the skeleton. The efficacy and safety of long-term administration of rhPTH(1-34) in Chinese postmenopausal women have not been evaluated. This study compared the clinical efficacy and safety of rhPTH(1-34) with elcatonin for treating postmenopausal women with osteoporosis in 11 urban areas of China. Methods A total of453 postmenopausal women with osteoporosis were enrolled in an 18-month, multi-center, randomized, controlled study. They were randomized to receive either rhPTH(1-34) 20 μg(200 U) daily for 18 months, or elcatonin 20 U weekly for 12 months. Lumbar spine ( L1-4) and femoral neck bone mineral density (BMD), fracture rate, back pain as well as biochemical markers of bone turnover ( serum bone-specific alkaline phosphatase was measured by radioimmunoassay; C-telopeptide/ creatinine ( CTX/ Cr) measured by quantitative sandwich enzyme-linked immunosorbent assay) at 6, 12, and 18 months. Adverse events were recorded. Results rhPTH(1-34) increased lumbar BMD more significantly than that did by elcatonin at 6 months( M6), 12 months (M12), and 18 months(M18; 4. 3% vs 1. 94% , 6. 8% vs 2. 72% , 9. 51% vs 2. 86% , P<0. 01). There was only a small but significant increase of femoral neck BMD at M18(2. 64% , P<0. 01) in rhPTH(1-34) groups. There were greater increases in bone turnover markers in the rhPTH(1-34) group than in the elcatonin group at M6, M12, and M18[serum bone-specific alkaline phosphatase(BSAP) 93. 67% vs -3. 56% , 117. 78% vs -4. 12% , 49. 24% vs-5. 81% , P<0. 01; urinary CTX/ Cr 250% vs -29. 5% , 330% vs -41. 4% , 273 % vs -10. 6% , P<0. 01]. rhPTH (1-34) showed similar effect of pain relief as elcatonin. The incidence of clinical fractures was 5. 36% (6 / 112) in elcatonin group and 3. 23% ( 11 / 341 ) in rhPTH ( 1-34 ) group ( P = 0. 303 ). Both treatments were well tolerated. Hypercaluria(9. 38% ) and hypercalcemia(7. 04% ) in rhPTH(1-34) group was transient and caused no clinical symptoms. Pruritus(8. 21% vs 2. 68, P=0. 044) and redness of injection site(4. 40% vs 0, P=0. 024) were more frequent in rhPTH(1-34). Nausea / vomiting(16. 07% vs 6. 16% , P = 0. 001) and hot flushes(7. 14% vs 0. 59% , P<0. 001) were more common in elcatonin group. Conclusion rhPTH(1-34) treatment was associated with greater increases in lumbar spine BMD and bone formation markers. It could increase femoral BMD after 18 months treatment. rhPTH(1-34) could ameliorate back pain effectively. The results of the present study indicate that rhPTH(1-34) is an effective, and safe agent in treating postmenopausal women with osteoporosis.