An analysis of occupational health examination results of 450 radiation workers in a steel mill / 中国辐射卫生

@#<b>Objective</b> To investigate the occupational health status of 450 radiation workers in a steel mill when they resigned, and to provide references and suggestions for the occupational health monitoring of the enterprise employees and for the workers’ proper arrangement after their resignations. <b>Methods</b> Occupational health examinations were performedon 450 steel workers who were about to resign in accordance with the applicable laws and regulations. And the examination results were statistically analyzed. <b>Results</b> Among the 450 radiation workers, 82% had abnormal examination results which included chromosome aberration in peripheral blood lymphocytes (4.89%), lens opacity (44.44%), pinguecula (25.33%), hypertension (28.22%), thyroid dysfunction (9.59%), and abnormal liver ultrasound findings (30.89%). Compared with the normal population, these steel workers had a significantly higher chromosome aberration rate in peripheral blood lymphocytes and a significantly higher incidence rate of ocular disorders. <b>Conclusion</b> It is important to effectively manage the occupational health of radiation employees in steel mills, and to regularly provide training on occupational health protection. To avoid radiation damage, workers should pay close attention to radiation protection at work, especially eye protection, to avoid eye disorders.

Analysis of occupational health examination results of radiation workers in Dezhou, China / 中国辐射卫生

Objective To investigate the occupational health status of radiation workers in Dezhou, China, explore the effects of low-dose ionizing radiation on the health of radiation workers, and provide a basis for improving the health of radiation workers. Methods A total of 1101 radiation workers in Dezhou who underwent occupational health examination in 2021 were selected. The effects of physical examination type, type of work, sex, length of service, and age on the health status of radiation workers were compared and analyzed. Results The abnormal rates of abdominal color Doppler ultrasound and eye lens were significantly higher in pre-post radiation workers than in radiation works (P < 0.05). The abnormal rates of eye lens increased with the length of service in radiation workers (P < 0.05). The abnormal rate of abdominal color Doppler ultrasound in male workers was higher than that in female workers, while the abnormal rates of blood routine and thyroid function were higher in female workers than in male workers (P < 0.05). Conclusion The abdominal rates of color Doppler ultrasound and eye lens are relatively high among radiation workers in Dezhou. It is necessary to improve the protection awareness and strengthen the level of radiation protection, so as to ensure the occupational health of radiation workers.

Adjuvant chemotherapy versus adjuvant concurrent chemoradiotherapy after radical surgery for early-stage cervical cancer: a randomized, non-inferiority, multicenter trial / 医学前沿

We conducted a prospective study to assess the non-inferiority of adjuvant chemotherapy alone versus adjuvant concurrent chemoradiotherapy (CCRT) as an alternative strategy for patients with early-stage (FIGO 2009 stage IB-IIA) cervical cancer having risk factors after surgery. The condition was assessed in terms of prognosis, adverse effects, and quality of life. This randomized trial involved nine centers across China. Eligible patients were randomized to receive adjuvant chemotherapy or CCRT after surgery. The primary end-point was progression-free survival (PFS). From December 2012 to December 2014, 337 patients were subjected to randomization. Final analysis included 329 patients, including 165 in the adjuvant chemotherapy group and 164 in the adjuvant CCRT group. The median follow-up was 72.1 months. The three-year PFS rates were both 91.9%, and the five-year OS was 90.6% versus 90.0% in adjuvant chemotherapy and CCRT groups, respectively. No significant differences were observed in the PFS or OS between groups. The adjusted HR for PFS was 0.854 (95% confidence interval 0.415-1.757; P = 0.667) favoring adjuvant chemotherapy, excluding the predefined non-inferiority boundary of 1.9. The chemotherapy group showed a tendency toward good quality of life. In comparison with post-operative adjuvant CCRT, adjuvant chemotherapy treatment showed non-inferior efficacy in patients with early-stage cervical cancer having pathological risk factors. Adjuvant chemotherapy alone is a favorable alternative post-operative treatment.

Comparison of short-term effects of arthroscopic and open reduction and internal fixation with Herbert screws in treatment of radial head fractures / 中华创伤杂志

Objective:To compare the short-term clinical effect of arthroscopic and open reduction and internal fixation with Herbert screws in treatment of Mason type II radial head fractures.Methods:A retrospective case-control study was conducted to analyze the clinical data of 38 patients with unilateral radial head fractures (Mason type II) admitted to Shanghai Zhongye Hospital from January 2017 to December 2018, including 22 males and 16 females, aged from 20 to 65 years [(37.4±12.6)years]. Twenty patients were treated by arthroscopic reduction and internal fixation with Herbert screw (Group A), and eighteen by open reduction and internal fixation with Herbert screw (Group B). The operation time and fracture healing time were recorded. The visual analogue scale (VAS), elbow flexion and extension range, forearm rotation range and Mayo elbow function score were compared between the two groups before and at 1, 3, 6, and 12 months after operation. The results of Mayo elbow performance score (MEPS) and upper limb function assessment using the disabilites of the arm, shoulder, and hand (DASH) score were compared between the two groups. Complications including screw breakage or fracture displacement were also evaluated.Results:All patients were followed up for 12-14 months [(12.3±2.3)months]. There was no significant difference in operation time between the two groups ( P>0.05). The fracture healing time was (8.9±0.6)weeks in Group A and (8.7±0.6)weeks in Group B ( P>0.05). There was no significant difference in VAS between the two groups before operation ( P>0.05). The VAS was (4.8±0.5)points at 1 month after operation in Group A, lower than (6.0±0.7)points in Group B ( P<0.05). There was no significant difference in VAS between Group A and Group B at 3, 6, and 12 months after operation ( P>0.05). There was no significant difference in elbow flexion and extension range between the two groups before operation ( P>0.05). The elbow flexion and extension range in Group A was (110.4±3.8)° and (137.1±4.0)° at 1, 3 months after operation, which was significant greater than (90.6±4.7)° and (125.1±3.5)° in Group B ( P<0.05). There was no significant difference in elbow flexion and extension range between the two groups at 6 and 12 months after operation ( P>0.05). There was no significant difference in the range of forearm rotation between the two groups before operation ( P>0.05). The range of forearm rotation in Group A was (107.1±2.8)° and (138.1±2.9)° at 1, 3 months after operation, significantly greater than (95.5±3.9)°, (121.5±3.0)° in Group B ( P<0.05). There was no significant difference in forearm rotation range between the two groups at 6 and 12 months after surgery ( P>0.05). There was no significant difference in MEPS between the two groups before operation ( P>0.05). The MEPS in Group A was (50.4±3.8)points at 1 month after operation, higher than (40.6±4.7)points in Group B ( P<0.05). There was no significant difference in MEPS between the two groups at 3, 6, and 12 months after operation ( P>0.05). There was no significant difference in DASH score between the two groups before operation ( P>0.05). The DASH score was (57.1±2.8)points at 1 month after surgery in Group A, higher than (42.5±3.9)points in Group B ( P<0.05). The DASH score was not significantly different between the two groups at 3, 6, and 12 months after operation ( P>0.05). There was no screw loosening or fracture after operation, and one patient in each group had fracture displacement ( P>0.05). Conclusion:For Mason type II radial head fractures, arthroscopic Herbert screw fixation has the advantages of less trauma, less pain and faster functional recovery of the affected limb compared with open reduction and Herbert screw fixation.

Expression of miR-378 in cervical cancer and its effects on the proliferation and invasion of cancer cells as well as the underlying mechanism / 中国基层医药

Objective:To detect the expression of miR-378 in cervical cancer and investigate its effects on the proliferation and invasion of cancer cells as well as the underlying mechanism.Methods:A total of 185 cervical tissue samples of women who received gynecological examination in Qilu Hospital of Shandong University from January 2012 to January 2016 were included in this study. Reverse transcription-quantitative polymerase chain reaction was performed to determine the expression of miR-378 in cervical tissue and C-33A cells. Western blot assay was performed to detect the expression of different cancer genes ATG12, CCND1 and pRb in C-33A cells. BrdU cell proliferation and Transwell invasion assay were performed to determine cell proliferation and invasion. Target Scan was used to predict and screen miR-378 gene targets and verified by a dual-luciferase reporter assay system.Results:The expression of miR-378 in cervical intraepithelial neoplasia (CIN) III lesioned tissue and cervical cancer tissue was significantly higher than that in normal cervical tissues ( F = 103.091, t = 9.381, 8.936, both P < 0.05). The expression of miR-378 in cervical cancer tissues with positive lymph node metastasis was significantly higher than that in cervical cancer tissues with negative lymph node metastasis ( t = 1.007, P < 0.01). The overexpression of miR-378 in cervical cancer tissues significantly promoted the migration and invasion of C-33A cells ( t = 5.285, P < 0.05), while low expression of miR-378 in cervical cancer tissues significantly inhibited the migration and invasion of HeLa cells ( t = 2.941, P < 0.05). The overexpression of miR-378 in C-33A cells significantly decreased the expression of ATG12, CCND1and pRb ( t = 1.382, 1.431 and 2.086, all P < 0.05). The low expression of miR-378 in C-33A cells significantly increased the expression of ATG12, CCND1 and pRb ( t = 3.961, 3.062 and 2.894, all P < 0.05). Conclusion:miR-378 can greatly promote the metastasis of cervical cancer cells. ATG12, as a direct target of miR-378, provides new insights into the molecular mechanism underlying cervical cancer pathology and therapeutic target.

Clinical features and prognosis of cervical adenocarcinoma and adenosquamous carcinoma: an analysis of 237 cases / 浙江大学学报·医学版

OBJECTIVE@#To analyze the clinical features and prognosis of cervical adenocarcinoma (AC) and adenosquamous carcinoma of cervix (ASC).@*METHODS@#The clinical data of 237 patients, including 201 cases of AC and 36 cases of ASC (FIGO stage ⅠB1-ⅡA), who underwent surgery in Qilu Hospital between September 2007 and September 2016 were reviewed. Clinical features of two groups were compared, and Kaplan-Meier survival analysis was performed to evaluate the prognosis.@*RESULTS@#A larger proportion of ASC patients had lymphovascular space invasion compared with AC patients (0.05). The 5-year overall survival rates of AC and ASC groups were 79.4% and 78.3%, and the 5-year recurrence-free survival rates were 77.4% and 73.0%. Among patients received concurrent chemoradiotherapy, the 5-year overall survival rates were 71.0% and 61.4%, and the 5-year recurrence-free survival rates were 68.8% abd 61.1%, respectively. No significant differences were observed in 5-year overall survival rates and recurrence-free survival rates between AC and ASC patients (all >0.05).@*CONCLUSIONS@#Lymphovascular space invasion was more likely to occur in patients with ASC, but there was no significant difference in the prognosis between AC and ASC patients.

Comparison of percutaneous compression plate and cannulated compression screw in treatment of undisplaced femoral neck fracture in the elderly / 中华创伤杂志

Objective To compare the efficacy between percutaneous compression plate (PCCP) and cannulated compression screw for undisplaced femoral neck fracture among the elderly.Methods A retrospective case-control study was made on 46 elderly patients with undisplaced femoral neck fracture between August 2011 and September 2015.There were 14 males and 32 females,with the age of (76.9 ± 12.1) years (range,60-85 years).The fracture types included Garden Ⅰ in 12 patients and Garden Ⅱ in 34.These patients were divided into PCCP group (PCCP for undisplaced femoral neck fracture in 23 patients) and cannulated screw group (three cannulated compression screws for undisplaced femoral neck fracture in 23 patients),according to different surgical fixations.The following data were compared between two groups,namely,operation time,intraoperative blood loss,postoperative hemoglobin decline,postoperative length of hospital stay,postoperative partial time of weight-bearing and full weight-bearing,fracture healing time,Harris hip score (HHS) as well as postoperative complications.Results All 46 patients were followed up,with follow-up duration for (34.6± 15.3)months (range,12-60 months) in PCCP group and for (32.9 ±17.3) months (range,12-60 months) in cannulated screw group (P ＞ 0.05).There were no statistically significant difference between two groups in terms of operation time,intraoperative blood loss,postoperative hemoglobin decline,postoperative length of hospital stay,fracture healing time,and postoperative full weight-bearing time (P ＞ 0.05).The partial weight-bearing time of patients in PCCP group was earlier than that in cannulated screw group (P ＜ 0.05).The HHS of patients at postoperative 3 months in PCCP group was better than that in cannulated screw group (P ＜ 0.05),but the HHS at the final follow-up had no statistically significant difference between two groups (P ＞ 0.05).There was no statistically significant difference in the incidence of postoperative complications between PCCP group (9％) and the cannulated screw group (13％) (P ＞ 0.05).Conclusions Usage of PCCP or cannulated compression screw can obtain satisfactory clinical results for the undisplaced femoral neck fracture among the elderly.But PCCP has the advantages of earlier partial weight-bearing time and faster recovery.

Quality of marriage and sexual function of cervical cancer patients following radical hysterectomy and vaginal extension / 中国医师杂志

Objective To investigate the quality of marriage and sexual function of cervical cancer patients following radical hysterectomy and vaginal extension.Methods Case-control and questionnairebased methods were used in this study.Forty patients of early-stage (Ⅰ b 1 ～ Ⅰ b2) cervical cancer who had undergone vaginal extension following classic radical hysterectomy were included in the observation group,while 40 patients with matching factors and radical hysterectomy only during the same period were included in the control group.The quality of marriage and sexual function were compared with OLSON marriage prolapse and incontinence sexual function questionnaire Shon Fonn (PISQ-12).Results The operation time and postoperative vaginal length in the observation group were higher than those in the control group (P ＜ 0.05 or P ＜ 0.01).The emotional,physical,and total scores during postoperation were lower than those during preoperation (P ＜ 0.01).The emotional,physical,and total scores in the control group were lower than those in the observation group (P ＜ 0.01).The marital satisfaction,husband and wife communication,conflict resolution methods,extracurricular activities and sex scores in the observation group were higher than those in the control group (P ＜ 0.05 or P ＜ 0.01).Conclusions Patients with peritoneovaginoplasty following radical hysterectomy had much longer vagina and less self-perceived short vagina.Vaginal extension following radical hysterectomy does not worsen the pelvic floor symptoms.

Definitive extended field intensity-modulated radiotherapy and concurrent cisplatin chemosensitization in the treatment of IB2-IIIB cervical cancer / 부인종양

OBJECTIVE: To assess the toxicity of delivering extended field intensity-modulated radiotherapy (EF-IMRT) and concurrent cisplatin chemotherapy for locally advanced cervical carcinoma. METHODS: Forty-five patients who underwent EF-IMRT and concurrent cisplatin chemotherapy for the treatment of stage IB2 to IIIB cervical cancer were retrospectively reviewed. The clinical target volume included all areas of gross and potentially microscopic disease and regional lymph node regions. All patients underwent high-dose-rate brachytherapy. The acute and late toxicity were scored using the Common Terminology Criteria for Adverse Events and the Radiation Therapy Oncology Group late radiation morbidity scoring criteria, respectively. RESULTS: The median follow-up was 28 months (range, 5 to 62 months). Forty-two patients had a complete response, and three had a persistent disease. Of those 42 patients, 15 patients (35.7%) had recurrence. The regions of recurrence were in-field in 2 patients and out-field in 13 patients. Acute grade > or =3 gastrointestinal, genitourinary and hematologic toxicity occurred in 3, 1, and 9 patients, respectively. Three patients (6.7%) suffered from late grade 3 toxicities. Seven patients experienced ovarian transposition, 5 of those patients (71%) maintained ovarian function. Thirty-eight patients (84.4%) were alive at the last follow-up. CONCLUSION: Concurrent cisplatin chemotherapy with EF-IMRT was safe. The acute and late toxicities are acceptable. EF-IMRT provides an opportunity to preserve endocrine function for patients with ovarian transposition.

Photodynamic effect of new photodynamic therapy combined with nucleolin silenceon cervical cancer cell line SiHa / 吉林大学学报(医学版)

Objective To study the antitumor effect of new photodynamic therapy (PDT) applying TMPyP4 combined with nucleolin silence on cervical cancer SiHa cells in vitro, and to explore an available combination treatment project for cervical cancer.Methods The SiHa Cells were divided into blank control group, RNAi group,PDT group and PDT-RNAi group.The proliferation activities of SiHa cells were assessed by Cell Counting Kit-8 (CCK8)assay.The apoptotic rates were measured by flow cytometry (FCM)with Annexin Ⅴ/PI staining. The invasiveness abilities were assessed by Transwell assay. Results Compared with blank control group, the inhibitory rates of growth of SiHa cells in RNAi group, PDT group and PDT-RNAi group were increased significantly (P<0.01);the inhibitory rates of growth of SiHa cells in PDT-RNAi group were higher than those in PDT group and RNAi group (P<0.05 ). The Q value was 1.27. Compared with blank control group, the apoptotic rates of SiHa cells in experiment groups were increased (P<0.05 ), and the late apoptotic rate in PDT-RNAi group was also increased;there were significant differences of the apoptotic rates between PDT-RNAi group and RNAi group, PDT group (P<0.05 ). Compared with blank control group, the cell invasiveness abilities of SiHa cells in experiment groups were decreased;there were significant differences of the invasiveness abilities of SiHa cells between PDT group and RNAi group (P<0.05).Conclusion New PDT shows a strong photodynamic effect on the SiHa cells,which can inhibit the proliferation and invasiveness and induce the apoptosis of SiHa cells invitro;nucleolin silence shows a good synergy effect to PDT.

Combination of plate screw and Steinmann pin in repair of comminuted calcaneal intra-articular and posterosuperior fractures / 中国组织工程研究

BACKGROUND:The therapeutic regimen of intraarticular calcaneal comminuted fractures commonly selects plate and screw fixation. However, for case of posterosuperior calcaneal fracture, the weakness of achil es tendon stretch and plate screw fixation results in difficulty or maintenance of reduction. OBJECTIVE:To investigate the therapeutic effects of open reduction and internal fixation with steel screw and Steinmann pins for comminuted calcaneal intra-articular and posterosuperior fractures. METHODS:From December 2009 to December 2013, forty patients with fractures of comminuted calcaneal posterosuperior fractures were randomly divided into two groups. In the control group, patients were treated by open reduction and internal fixation by plate screw only. In the experimental group, patients were treated by open reduction and internal fixation by combination of plate screw and Steinmann pin. The Gissane and Bohler angles of the calcaneus were measured from lateral radiograph before and 4 weeks after surgery, and the MARYLAND score was assessed at the last fol ow-up. Gissane and Bohler angle and MARYLAND score were compared in each group and among different groups. RESULTS AND CONCLUSION:Al patients were fol owed up for 9-23 months. BOHLER and GISSANE angles were significantly bigger at 4 weeks after surgery compared with pre-treatment in both groups (P<0.05). BOHLER and GISSANE angles were significantly bigger in the experimental group than in the control group at 4 weeks after surgery (P<0.05). During final fol ow-up, the average score by MARYLAND Foot Score was 78 in the experimental group and 67 in control group, with their excellent and good rate of 80%and 73%. The excellent and good rate was significantly higher in the experimental group than in the control group (P<0.05). These data indicated that open reduction and internal fixation with combination of plate screw and Steinmann pin has better efficacy in treatment of the comminuted calcaneal intra-articular and posterosuperior fractures compared with plate and screw fixation alone. Their fixation is firm. Functional exercise can be performed earlier. Postoperative recovery of function of the affected limbs is better than plate and screw fixation alone.

Absorbable rod versus Herbert screw for radial head fractures:therapeutic effects and treatment costs / 中国组织工程研究

BACKGROUND:Mason II type and III type radial head fractures with massive bone are mainly treated by open reduction and metal fixation, but metal implants have to be removed in the second operation, which increased patients’ travail and financial burden. Absorbable screw/rod also can be used to treat radial head fractures, and has its special advantages due to the low price and no second operation. OBJECTIVE:To compare the clinical therapeutic effects of absorbable rod and Herbert screw for the treatment of Mason II or III type radial head fractures. METHODS:A total of 80 patients with Mason II and III type radial head fractures were equal y assigned to experimental and control groups. They received open reduction and internal fixation. The experimental group was treated with absorbable rod and the control group received Herbert screw. RESULTS AND CONCLUSION:A total of 79 patients were fol owed up for averagely 34 months. No significant difference in average operative time, fracture healing time, Broberg and Morrey elbow scores and incidence of complications was detected between the experimental and control groups (P>0.05). However, treatment costs were lower in the experimental group than in the control group (P<0.05). Results indicated that the therapeutic effects between absorbable rod and Herbert screw for Mason II or III type radial head fractures were similar. However, absorbable rod for radial head fractures can avoid the second operation for removal of the implant. Therefore, we recommend absorbable rod in the choice of internal fixation materials.

Radial head replacement versus open reduction and internal fixation for comminuted radial head fractures:more advantageous? / 中国组织工程研究

BACKGROUND:At present, the methods of treating unstable comminuted radial head fractures contain open reduction and internal fixation and metal prosthesis replacement. There were success cases treated by the two methods, but some shortcomings simultaneously existed. OBJECTIVE:To compare the clinical therapeutic effects of replacement of the radial head with metal prosthesis with open reduction and internal fixation for the treatment of unstable comminuted radial head fractures. METHODS:A prospective randomized control ed analysis was performed in 45 cases of unstable comminuted radial head fractures. These cases received open reduction and internal fixation and metal prosthesis replacement. This study compared the Broberg and Morrey elbow joint function score and the incidence of complications after fixation, and performed statistical analysis. RESULTS AND CONCLUSION:The subjects were fol owed up for 1-5 years, averagely 2.8 years. According to Broberg and Morrey scores, the average score was 90.1 and the incidence of complications was 13.6%in the prosthesis replacement group. The average score was 76.8 and the incidence of complications was 47.9%in the open reduction. Significant differences were visible between the two groups (P<0.01). Compared with the open reduction group, prosthesis replacement for unstable comminuted radial head fractures obtained better joint function and lower incidence of complications.

Application of pathological diagnosis by rapid paraffin sections for biopsy in the diagnosis and treatment of cervical diseases / 中华妇产科杂志

Objective To evaluate the application of pathological diagnosis by rapid paraffin sections in the diagnosis and treatment of cervical diseases. Methods A total of 176 cases from our hospital between September 2009 and January 2010 with abnormal cervical cancer screening (including abnormal cytology result and high-risk HPV continuous positive) were randomly divided into 2 groups. Eighty-seven cases of them whose biopsy were got by Belinson forceps under the direction of colposcopy with rapid paraffin sections by ultrasonic histopathological rapid processor and BT transparent agents were selected as group A, while 89 cases with conventional paraffin sections were selected as group B. The production time and quality for paraffin sections were analyzed in the two groups. Those diagnosed as cervical intraepithelial neoplasia (CIN)Ⅱ or even worse and some special patients with CIN Ⅰ in the two groups received surgery, including loop electrosurgical procedure (LEEP) ,cold knife conization (CKC),.hysterectomy or radical hysterectomy.Tissue obtained after surgery was sent for routine pathological examination. If the results of postoperative routine pathological examination were inconsistent with the rapid or routine biopsy pathological examination,the heavier results were regard as the final diagnoses. The pathological results and diagnose accordance rates were recorded and compared between group A and group B. Results The quality of sections in two groups were all satisfied or basically satisfied to meet the diagnostic requirements. There were statistically significant difference in average production time between group A and B (40 minutes vs 24 hours, P 0. 05). Conclusion Bapid paraffin sections technology is safe, accurate and economical for rapid pathological diagnosis of cervical diseases, which is worthy for being widely used in hospitals.

Effect of extracelinlar signal regulated kinase signal pathway on apoptosis induced by MG262 in ovarian cancer cells / 中华妇产科杂志

Objective To investigate whether the proteasomes inhibitor MG262 exerts its anticancer function by inducing apoptosis in human ovarian cancer cells,and whether the extracellular signal regulated kinase (ERK) signaling pathway is involved in the regulation of apoptosis induction.Method Human ovarian cancer cell line SKOV3 was incubated with different concentrations of MG262 for 24 and 48 hours.Cell viability was evaluated with 3-(4,5-dimethyhhiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay at different time points of culturing.Flow cytometry was used to detect cell apoptosis rate.The expression of vascular endothelial growth factor (VEGF) was evaluated with western blot and enzyme-linked immtmosorbent assay (ELISA).Western blot was used to detect the expression of phosphorylated ERK(pERK) .Results The viability of SKOV3 cells was decreased by MG262 in a concentration-dependent fashion(P＜0.05).After 24 h incubation with MG262 at 1,10,20,40,60 and 80 nmol/L,the viability rates of SKOV3 were (94.6±3.1)%,(92.7±3.7)%,(89.5±7.7)%,(84.2±5.1)%,(82.0±7.4)%and(76.8±11.0) % respectively,and after 48 h incubation,those figures were further decreased to (91.3±10.1)%,(86.8±4.5)%,(74.6±4.2)%,(56.8±2.1)%,(49.3±4.5)% and (37.4±5.4) %,respectively(P＜0.05).Apoptosis rate of SKOV3 cells induced by MG262,PD98059 or their combination was (30.7±4.3)%,(26.8±8.6)% and (50.3±10.6)%,respectively,which were significantly different compared with controls (P＜0.05).In contrast to SKOV3 cells,apoptosis rate of 293T ceils induced by MG262,PD98059 or their combination was (14.5±5.3) %,(16.2±7.5) % and (10.8±7.3)%,respectively,which were not significantly different compared with controls (P＞0.05).pERK expression decreased gradually in a time-dependent manner. And wild-type p53 expression was not significantly different.There was no significant difference between experimental and control 293T cells(P＜0.05).In addition,MG262 down-regulated VEGF secretion and expression in SKOV3 ceils (P＜0.05).Conclusions Proteasome inhibitors can induce apoptosis and inhibit cell proliferation and angiogenesis through ERK signal pathway in SKOV3 cells.

Expression and significance of chemokine CXC receptor 3, 4 and their ligands at the early pregnancy decidua and villi / 中华妇产科杂志

Objective To explore the expression and significance of chemokine CXC reeeptor (CXCR)3 and CXCR4 and their ligands(CXCL)at the early pregnancy decidua and villi.Methods Decidual mononuclear cells were isolated from the normal decidua of 5-8 weeks pregnant women by lymphocyte separation medium in vitro.CD56+natural killer(NK)cells were purified by dynabeads cell sorter kiL Purity and phenotype of CD56+decidua NK cells were analyzed by fluorescence-activated eell sorter (FACS).Gene expression of CXCR3 and CXCR4 in decidua NK cells and CXCL9,CXCL10 and CXCL12 in early pregnancy decidua and villi was assessed bv RT.PCIZ Protein expression of CXCL9,CXCL10 in normal endometrium and early pregnancy decidua was characterized and quantified by streptavidin-biotin pemxidase chain reaction(SP)immunohistochemistry and computered image analysis system.Correlations between the gray degree of CXCL9 and CXCL10 and the number of CD56+NK cells in upper tissue were analyzed by Spearman's correlation ceefficient rank tesL Results The phenotype of 98.7%decidua NK cells was CD56bright.The genes of CXCR3 and CXCR4 were expressed in decidua NK cells and that of CXCL9 and CXCL1O were expressed in early pregnancy decidua and CXCLI2 in early pregnancy villi.CXCL9 and CXCL10 were expressed in the cytoplasm of surface epithelia,glandular epithelia and stromal cells of early pregnancy deeidua and were not expressed in villi by immunohistochemistry.The gray degree of CXCL9 and CXCL10 in the secretory phase endometrium(56±43,59±47)was stronger than that in the proliferative phase(16±18,8±14,P<0.05)and reached the highest(143±35,158±29,P<0.05)in the early pregnancy decidua.The number of cD+56 NK cell in the secretory phase endometrium(60±20)was more than that in the proliferative phase endometrium(23±4,P<0.05)and was the most in the early pregnancy decidua(114±15,P<0.05).The gray degree of CXCL9 in upper tissue had a positive correlation with the number of CD+56 cells(r=0.88,P<0.05)and that of CXCL10 had a similar pattern to CXCL9(r=0.86,P<0.05).Condusion The interactions between CXCL9,CXCL10 and CXCL12 expressed in decidua and villi and CXCR3,CXCR4 expressed in CD+56 decidua NK cells may influence the CD+56 NK cell recruitment at the maternal-fetal interface.

Enhancement of photodynamic therapy sensitivity by cisplatin in human cervical carcinoma cell lines / 西安交通大学学报(医学版)

Objective To investigate the mechanism of small-dose cisplatin in enhancing photodynamic therapy sensitivity and apoptosis in human cervical carcinoma cell lines.Methods The Hela and Siha cells were divided into four groups(blank control group,photodynamic therapy only,cisplatin only,photodynamic therapy and cisplatin).The effects on proliferation of Hela and Siha cells in the four groups were examined by MTT assay.The expression of P185c-erbB-2 in Hela and Siha cells affected was detected by immunocytochemistry.Results The degree of apoptosis caused by the joint application of cisplatin and photodynamic therapy was greater than that caused by cisplatin or photodynamic therapy alone.The expression of P185c-erbB-2 in cells declined correspondingly.However,the order of cisplatin and photodynamic therapy did not cause obvious differences in the effect.Conclusion The in vitro proliferation of Hela and Siha cells is restrained obviously by cisplatin combined with photodynamic therapy;the effect is greater than that of cisplatin or photodynamic therapy only.The mechanism of cispatin's enhancement of photodynamic therapy sensitivity may be related to inhibiting P185c-erbB-2 expression.

Effects of photodynamic therapy with 5-aminolevulinic acid on human ovarian carcinoma 3AO cells in vitro / 西安交通大学学报(医学版)

Objective To study the effects of 5-aminolevulinic acid (5-ALA) mediated photodynamic therapy (PDT) on human ovarian carcinoma 3AO cells in vitro. Methods Morphological changes were examined by microscopy; the inhibitory effects of 5-aminolevulinic acid mediated photodynamic(5-ALA-PDT) on 3AO cells were examined by MTT assay; cell cycle of 3AO cells was observed by flow cytometry with PI staining; the modality of 3AO cell death induced by 5-ALA-PDT was determined by flow cytometry with Annexin V-PI staining. Results Typical morphological changes of apoptosis occurred after 5-ALA-PDT. The inhibition rate of cells increased gradually with the increase of 5-ALA concentration and laser irradiation dose (P