OBJECTIVE: To explore the materials and design of intraocular lens for traumatic cataract caused by sports injuries.METHODS: The databases of Medline and CNKI were retrieved by computer with key words of "sports injury, cataract, and intraocular lens". The languages were restricted as Chinese and English. By searching, 12 literatures concerning intraocular lens for traumatic cataract caused by sports injuries were selected, including 3 written in English and 9 in Chinese.RESULTS: One of the causes for cataract is sports injury. Every year, thousands of cases suffered eye damages in China due to sports. Here, first, a brief introduction of the causes of cataract was presented, and then the suitable intraocular lens implantation for athletes was prepared, finally, the materials and design of intraocular lens was discussed.CONCLUSION: The intraocular lens is developed fast both in basic theory and clinic, which exhibit good features in biocompatibility, visual function, regulatory ability, as well as photoprotection following transplantation. The widening of intraocular lens can provide more choices for physicians, and the life quality of patient was obviously improved.

Objective To provide improvement measures and recommendations to improve preven-tive medicine's clinical internship. Methods 88 third-year students and 82 fifth-year students of preventive medicine in Sichuan University were surveyed. Then 81 valid questionnaires of the third grade and 79 valid questionnaires of the fifth grade were input into EpiData, and SPSS 17.0 was used to analyze the data. Then, in-depth interviews were conducted among 6 employees and 2 professional teachers of the employing units, and the interview records were organized to form an interview summary. Results The third-year preventive medicine students who are preparing to take part in the clinical internship know little about the clinical in-ternship, which accounts for only 0％and 92.59％(75) think that the internship content should be different with the clinical medicine, in the meantime 44.44％ (36) think chief resident should be the internship teacher. For the fifth-year preventive medicine students who have finished the clinical internship, only 3.80％(3) is very satisfied with clinical internship;84.81％(67) are considered to take into account the pro-fessional characteristics of the clinical practice; meanwhile, the satisfaction of the knowledge or the ability learned from the clinical internship as well as the help in the post-graduation job is only 8.86％ (7); the employer's and professional teachers consider that the related clinical internship program of the preventive medicine student should be suitable for prevention medical students , and at the same time , preventive medicine students should focus on learning clinical knowledge related to disease prevention. Conclusion The clinical internship of preventive medicine needs further improvements, such as adjusting practice con-tents, learning teacher, management methods to form a clinical practice system characterized by preventive medicine so as to meet the needs of employers and students.

Objective To explore the related factors of the influence of persistent pulmonary hypertension( PPH) after neonatal resuscitation. Methods Tow hundred and fifty?six cases asphyxia patients who were treated in the Maternal and Child Care Service Center of Shangluo from March 2012 to March 2015 were retrospectively analyzed. One hundred and thirty?six newborns asphyxia of persistent pulmonary hypertension were selected as the observation group. One hundred and twenty newborns asphyxia without persistent pulmonary hypertension were selected as the control group. Medical records of children of two groups were retrospectively analyzed. Apgar scores of all observed objects. Before resuscitation blood pressure, blood glucose, body temperature,blood pH value of children in the two groups were recorded. Results In admission, the systolic blood pressure,diastolic blood pressure,body temperature,blood sugar,blood pH value in the observation group ((49. 27±8. 08) mmHg,(22. 25±5. 17) mmHg,(34. 40±0. 41)℃,(2. 78±0. 65) mmol/L,(7. 11±0. 79)) were lower than that in the control group((51. 23±4. 17) mmHg,(23. 87±2. 18) mmHg,(36. 80±0. 85)℃, (3. 55±0. 33) mmol/L,(7. 33±0. 17)),the differences were statistically significant(t=2. 480,3. 334,28. 169, 12. 155,3. 166;P<0. 05) . Hypoglycemia,hypothermia,low systolic blood pressure,low diastolic blood pressure were identified as the impact factors that can cause neonatal resuscitation after persistent pulmonary hypertension ( OR=3. 660,1. 930,8. 903,4. 543;95%CI=1. 061-12. 631,1. 399-2. 661,1. 166-67. 962,1. 636-12. 613;P<0. 05). Conclusion Hypoglycemia,hypothermia,low systolic blood pressure and low diastolic blood pressure are impact factors can cause neonatal resuscitation after persistent pulmonary hypertension.

0.05),but improved significantly the rise from day 3 to day 10 of serum fibronectin level 〔(22.8?5.8) mg/L vs.(9.6?3.6) mg/L,P

Objective To evaluate the effect of Fat Mass and Obesity Associated (FTO) gene on radiosensitivity of human glioma cell A172 and investigate its potential mechanism by changing the expression of FTO gene.Methods Cells were divided into five groups according to their FTO protein expression level.The normal expression group was recorded as A172 Group,the low-expression and its negative control group was A172/siRNA and A172/NC Group,and the over-expression and its negative control group was A172/FTO and A172/PC group.FTO protein expressions were assayed by Western blot in A172 Group after irradiation.Clonogenic assay was executed to evaluate the relationship between FTO gene and radiosensitivity.Immunofluorescence and Western blot assay were applied to detect the proteins of DNA damage and repair.Results FTO protein expression level in A172 Group was significantly related to the irradiation dose and the time post-irradiation.The radiosensitization ratio (SERD0) of A172/siRNA and A172/FTO group were 1.829 and 0.812 respectively.Not only the number of γ-H2AX foci increased (t =-21.884,P ＜ 0.05) in A172/siRNA 1 h post-irradiation but the decreases of p-p95/NBS1 and Ku80 proteins were also detected (t =24.731,23.293,P ＜ 0.05) together with the increase of Rad50 protein (t =3.140,P ＜ 0.05).But the expressions of these proteins in A172/FTO group were opposite to the above phenomenon (t =0.642,-8.364,26.829,P ＜ 0.05).Conclusions FTO gene is a radiation-resistant gene,which may because the regulation of FTO gene could alter the primary injury and DNA damage repair in the irradiated tumor cells.

Objective To investigate the dynamic changes of VEGF mRNA and protein in the injured brain of rats irradiated by 20 Gy of electron beams.Methods A total of 114 Sprague-Dawley rats were randomly divided into two groups,42 rats in sham group with sham-irradiation,and the other 72 rats in irradiation group that the whole brains of rats were administered with a single dose of 20 Gy electron beam (6 MeV) to establish an animal model of radiation-induced brain injury.All rats were terminated at 1,3,7,14,28,42,56 d post-irradiation respectively.The pathological changes were observed with light microscopies.Real-time quantitative reverse transcriptase-PCR was used to measure the level of VEGF mRNA in the brain tissue.The expression of VEGF protein in whole brain tissue was detected with Western blot.The VEGF protein expression in brain endothelium,gliacyte and neuron were measured via immunohistoehemistry with computerized image processing.Results The pathological process of radiationinduced brain injury (RBI) included brain endothelial cell damage,brain edema,thrombosis formation and ablation,revascularization and angiogenesis.In the irradiation group,the expression of VEGF mRNA was declined significantly at 1,3,7,2g,42 d post-irradiation (t =16.275-46.118,P ＜ 0.05).The VEGF protein expression in whole brain tissue was up-regulated at 1 and 7 d after irradiation,but downregulated at 3,14,28,42,56 d post-irradiation.There were VEGF positive cells in the brain endothelium,gliacyte and neuron at 1 d after irradiation.The expression of VEGF protein in gliacyte and neuron significantly was increased at 1,14,42,56 d post-irradiation (t =-8.394--4.697,P ＜ 0.05),and increased significantly in brain endothelial cells at 1,14,and 42 d after irradiation (t =-5.554--4.159,P ＜ 0.05).Conclusions The expression of VEGF mRNA was relatively suppressed in RBI rats.The expression of VEGF protein in whole brain tissue was up-regulated only at the early stage of RBI.The expressions of VEGF protein in brain endothelium,gliacyte and neuron were increased in the observation period,which induced brain edema and the formation of thrombosis at the acute RBI stage,and participated in the progression of angiogenesis and thrombosis ablation at the early-delayed RBI stage.

The purpose of this study was to investigate the pharmacokinetic interaction between sunitinib and ramipril in rats. Eighteen male SD rats were divided into three groups, with each group being assigned to orally receive sunitinib, ramipril, sunitinib and ramipril, respectively, for ten days. Blood samples were collected at dif-ferent times after first-day and tenth-day administration. The concentrations of ramiprilat and sunitinib in rat plasma were determined by LC/MS/MS and the pharmacokinetic parameters were calculated and statistically analyzed. Compared with the administration of ramipril alone, after a single-dose combined administration, tmax of ramiprilat decreased significantly and t1/2 prolonged, while AUC0-∞ remained unchanged. These results indicated that the ab-sorption rate of ramiprilat increased and the elimination rate decreased, but total absorption degree was not changed. After multiple-dose administrations, CL of ramiprilat decreased and AUC0-∞ increased obviously. It sug-gested that accumulation of ramiprilat occurred in body and the drug elimination became slower. No obvious difference of sunitinib pharmacokinetic behavior was found when it was given in combination with ramipril after a single-dose administration or multiple-dose administration. Sunitinib decreased the elimination of ramiprilat after co-administration in company with drug accumulation in body after multiple-dose co-administration. The study showed that there were pharmacokinetic interactions between sunitinib and ramipril in SD rats.

We summarized and evaluated the radical effect and feasibility of the ano-saving operation for low rectal carcinoma by reviewing literature in recent years about the operative indication, the excision dimension, total mesorectum excision, selection of operative mode, 5-year survival rate and follow-up of the anal saving operation in low rectal carcinoma.The main points are as follows: (1)The operative indication of ano-saving operation is done according to the location,invasion depth and pelvic lymphatic metastasis of low rectal carcinoma.(2)The preoperative digital anal examination,rectal intraluminal ultrasound,pelvic CT and MRI can direct the selection of operative indication.(3)The operation of low rectal carcinoma should adhere to total mesorectum excision,but the lateral lymphadenectomy is necessary.(4)The wtra low resection is the major operative mode for low rectal carcionoma.(5)We should simultaneously perform the ano-saving operation through treating and preventing hepatic metastasis.The ano-saving operation can not only have radical treatment effect,but also improve the quality of life in patients with low rectal carcinoma.

Objective To describe the clinical characteristics,outcome and prognostic factors of primary intraspinal tumor treated with postoperative radiotherapy.Methods Thirty-three patients diagnosed as suffering from intraspinal tumor treated with postoperative radiotherapy were analyzed.There were eighteen male and fifteen female,with a median age of 37 years(range 7-64 years).Two patients were treated with grossly total resection,25 subtotal resection,2 biopsy only.These patients were treated either with(~(60)Co)(n =18,before 1998) or 6?MV-X ray(n =15,after 1998) to the total dose of 45-68?Gy.The overall response and survival rates were calculated by Kaplan-Meier method and the difference between groups was tested by the log-rank method.The prognostic factors related to the characteristics of patient,tumor,and treatment were determined.Results The overall response,five-year and disease-free survival rate was 81.3%,59.4% and 56.3%,respectively.By multivariate analysis,the histological type(P= 0.039) and gender(P= 0.049) had independent impact on the 5-year survival rate.Ependymoma had a better prognosis compared to other histological subsets and female gained more survival advantage over male.There was no close relationship between survival and other factors,such as age,extent of surgery,initial site,irradiation dose,or the interval between surgery and radiotherapy.Conclusions Postoperative radiotherapy is safe and effective for primary intraspinal tumor.The histological type and gender are important prognostic factors of survival in primary intraspinal tumors.

Objective To compare the radiosensitivity effect of celecoxib on oln93 and u373 cells,and to explore the related mechanism.Methods Both oln93 cells and u373 cells were respectively divided into control group,drug group,radiation group and combined group when treated with celecoxib and irradiation.Cell survival ratio was evaluated by MTT assay and clogenic assay.Flow cytometry and Western blot assay were used to measure cell cycle and protein expression.Results Celecoxib had a similar effect on oln93 and u373 cells in enhancing the radiosensitivity (t =2.215-30.996,P ＜ 0.05 ; t =0.383-11.732,P＜0.05)and blocking cellcycle in G0/G1(t=-6.1-5.141,P＜0.05).Compared with the radiation group,the combined group showed S phase arrest(t =-18.174,P ＜ 0.05),and increase of Cyclin A protein (t =-8.087,P ＜ 0.05) in oln93 cells,and G2/M arrest and decrease of Cyclin B1 and DNA-PKcs and MRE11 protein (t =-8.838-10.45,P ＜ 0.05) in u373 cells.Conclusions Celecoxib illustrates a more sensitive radiosensitivity to u373 cells by regulating its cell cycle and DNA damage repair.