Purpose To explore the effects of progesterone receptor isoforms A and B ( PR-A,PR-B) on carcinogenesis and progres-sion of ovarian serous cystadenocarcinoma ( OSC) . Methods The expressions of PR-A and PR-B in 52 cases of OSC, 22 cases of o-varian borderline serous cystadenoma ( OBSC) , 22 cases of umbrella of normal fallopian ( UNF) were detected by immunohistochmical Elivision technique. Results The expression of PR-A in OSCs, OBSCs and UNFs were 94. 5%, 94. 5%, and 68. 38%, respective-ly, with there were statistical significance among three groups (P<0. 05). The expression of PR-B in OSCs, OBSCs and UNFs were 100%, 77. 27%, and 40. 38%, respectively, with there were statistical significance among three groups (P<0. 05). The difference of PR-A/PR-B ratio in OSCs, OBSCs and UNFs was statistical significance ( P<0. 05 ) . The expressions of PR-A and PR-B in OSCs were lower, there were statistical significance between the clinical stageⅠ+Ⅱ andⅢ+Ⅳ (P<0. 05), and histological gradeⅠandⅡ. The difference of PR-A/PR-B ratio between the histological gradeⅠandⅡin OSC was statistical significance. There was statistical significance of PR-B between OSCs with lymph metastasis and without lymph metastasis (P<0. 05). Expression of PR-A and PR-B in OSC was positive correlation (P<0. 05). Conclusion With the carcinogenesis and progression of OSC, the expressions of PR-A and PR-B gradually declined, and the downregulation of PR-B is more obvious, may be an important biological sign of malignant transfor-mation in ovarian tissue. The increasing ratio of PR-A to PR-B in OSC may indicate poor differentiation. The relatively higher expres-sion of PR-B may inhibit the lymph metastasis in OSC.

In this paper, we propose an image-based key frame gating method to reduce motion artifacts in intravascular ultrasound (IVUS) longitudinal cuts. The artifacts are mainly caused by the periodic relative displacement between blood vessels and the IVUS catheter due to cardiac motion. The method is achieved in four steps as following. Firstly, we convert IVUS image sequences to polar coordinates to cut down the amount of calculation. Secondly, we extracted a one-dimensional signal cluster reflecting cardiac motion by spectral analysis and filtering techniques. Thirdly, we designed a Butterworth band-pass filter for filtering the one-dimensional signal clusters. Fourthly, we retrieved the extremes of the filtered signal clusters to seek key frames to compose key-frames gated sequences. Experimental results showed that our algorithm was fast and the average frame processing time was 17ms. Observing the longitudinal viewpictures, we found that comparing to the original ones, the gated sequences had similar trend, less saw tooth shape, and good continuity. We selected 12 groups of clinical IVUS sequences [images (876 +/- 65 frames), coronary segments length (14.61 +/- 1.08 mm)] to calculate vessel volume, lumen volume, mean plaque burden of the original and gated sequences. Statistical results showed that, on one hand, both vessel volume and lumen volume measured of the gated sequences were significantly smaller than those of the original ones, and there was no significant difference on mean plaque burden between original and gated sequences, which met the need of the clinical diagnosis and treatment. On the other hand, variances of vessel area and lumen area of the gated sequences were significantly smaller than those of the original sequences, indicating that the gated sequences would be more stable than the original ones.
Algorithms ; Artifacts ; Heart ; Humans ; Motion ; Ultrasonography, Interventional

Objective The purpose of this research is to study the preventive and therapeutic effects of suramin on lipopolysaccharide (LPS)-induced mouse model of acute lung injury and its molecular mechanism.Methods A total of 24 healthy male C57BL/6 mice were randomly divided into two groups: Control group and suramin group.LPS (5 mg/kg, iv) induced acute lung injury model was used in this study.The severity of lung injury was evaluated using haematoxylin-eosin (HE) staining after the injection of LPS for 0, 24 and 72 hours.The expression of TNF-α and IL-6 mRNA levels were also detected by RT-PCR.In vitro, THP-1 cells were stimulated by LPS (100 ng/mL) with saline or suramin pre-treatment.The expressions of p-ERK1/2, p-JNK and p-P38 were analyzed by Western blot at 10 min, 20 min and 30 min after LPS insult.A 2-tailed Student's t test was used to compare difference between two independent groups.Results Compared with the saline group, the lung tissues injury were significantly decreased in the suramin group of 72 hours after the injection of LPS (saline 3.90 ±0.35;suramin 2.50 ±0.12) (t =7.668, P ＜ 0.01).The expressions of TNF-α (saline 8.35 ± 1.63;suramin 4.62 ± 0.70) (t =4.187, P＜0.01) andIL-6 (saline10.53 ± 2.10;suramin5.53±1.10) (t=4.224, P＜0.01) mRNA were also obviously reduced in suramin group after the injection of LPS for 24 hours.The expression levels of pERK1/2, p-JNK and p-P38 were obviously down-regulated by suramin at 10 min, 20 min and 30 min after LPS stimulation.Conclusion Suramin protected LPS-induced acute lung injury through down-regulating the expression of pro-inflammatory factors, which was closely relative to the inhibition of the MAPK pathway.

Objective To study the protective effect and mechanism of lactulose on the renal function in acute cholelithiasis with obstructive jaundice. Methods Fifty five cases of acute cholelithotic obstruction were randomly assigned into lactulose group (group L, n=28) and control group (group C, n=27), and 50% lactulose (group L)or 10% glucose (group C ) was administered orally for 3 days before the operation , respectively. The systemic and portal blood endotoxin (ET), blood urea nitrogen (BUN) and endogenous creatinine clearance rate (Ccr) were measured periodically. Results (1) In group L, the level of systemic vein ET and BUN were significantly lower than that in group C (P0.05); and the systemic vein ET and Ccr decreased significantly on 9d (P

Objective To study the effect of two-step pretargeting radioimmunotherapy of CD45 McAb and 188Re-Avidin on lymphoma Raji cell line.Methods The CD45 McAb and Avidin were directly labeled with 188Re,and the labeling efficiency and radiochemical purity were measured by the paper chromatography.The specific binding test and competition binding test between 188 Re-CD45 McAb and Raji cells in vitro were also performed.CCK-8 assay was used to determine the inhibition effect on Raji cell proliferation in the pretargeted group,188Re-CD45 McAb,188Re-Avidin and 188ReO4 groups,then the cell survival and proliferation inhibition rate were calculated.Results The specific cell binding rate of 188Re-CD45 McAb with Raji cells was (70.92 ± 1.91) ％,in the competition group,the binging rate of 188Re-CD45 McAb with Raji cells was only (7.96 ± 0.87)％.The Raji cells proliferation was inhibited in all groups with 188Re radiolabel,and the inhibition rate was positively correlated with the radioactivity dose (r=0.907-0.992,P ＜0.05).However,at the same dose,the inhibition effect in the group of two-step pretargeting at each time point were all stronger than those of 188Re-CD45 McAb,188Re-Avidin and 188 ReO4-alone (t =124.76-607.98,P ＜ 0.05).But there was no significantly statistical difference in the inhibitory effect between the groups of 188Re-Avidin and 188ReO4-(P ＞ 0.05).Conclusions It is confirmed that 188Re-CD45 McAb could be specifically bound to Raji cells,and the two-step pretargeting of CD45 McAb and 188Re-Avidin has obvious inhibitory effect on the Raji cell proliferation.

In this paper, the question about automatic brightness control for x-ray imaging systems based on CCD camera is discussed, and the structure and principle of an auto brightness control loop are analyzed along with the working procedure of the x-ray imaging system. A kind of digital brightness controller about a typical device and the designing idea of the computer brightness intelligent control software is introduced.
Algorithms ; Image Processing, Computer-Assisted ; Radiation Protection ; Radiographic Image Enhancement ; instrumentation ; Radiography ; instrumentation ; X-Ray Intensifying Screens

Objective To discuss the application of microsurgery in the treatment of male infertility.Methods From March 2007 to March 2012,there were totally 853 infertile men received microsurgical treatments in our department.Among them,344 patients with unilateral or bilateral varicocele underwent microsurgical varicocelectomy,60 underwent vasovasostomy (VV) and 192 underwent vastoepidystomy (VE)in microsurgical methods due to obstructive azoospermia.257 non-obstructive azoospermia (NOA) patients were performed microdissection of testicular sperm extraction (MD-TESE),at the same time,pathologic examination was done.Results ①For the varicocele patients,the pre-operative sperm density was (10 ±6) × 106/ml,the progressive sperm percentage was (16 ± 9)％.The post-operative density was (15 ± 8) ×106/ml,the progressive sperm percentage was (28 ± 14)％.The natural pregnant rate was 10.8％ (37/344).②In 60 patients undergone VV,the patent rate was 80.0％ (48/60),the natural pregnant rate was 35.0％ (21/60).In 192 VE patients,the patent rate was 53.1％ (102/192),the natural pregnant rate was 19.8％ (38/192).③In 257 NOA patients,the testicular volume,sperm retrieval rate of MD-TESE was significantly higher than that of conventional testicular sperm extraction (60.3％ vs.38.1％).Conclusion The microsurgery techniques in male infertility treatments could have some advantages such as explicit effects and decreased injuries.

Background and purpose:It has a signiifcant effect for erlotinib on treatment of patients with epidermal growth factor receptor mutation in advanced non-small cell lung cancer (NSCLC). But almost all patients will eventually progress for the resistance of drug. This study was to evaluate the efifcacy and safety of retreatment of erlotinib in patients with advanced NSCLC. Methods:It was a retrospective analysis of the 46 advanced NSCLC patients who previously treated with erlotinib and had clinical beneift. The patients were given erlotinib 150 mg orally once daily after failure to other medications until disease progression or the occurrence of intolerable toxicity. The clinical features, therapeutic effect and survival were analyzed. Results: The objective response rate of retreatment with erlotinib was 28.3%. The disease control rate was 60.9%. The rate of symptom relief was 45.7%. The median progression-free survival was 3.6 months. The median overall survival was 7.3 months. One-year survival rate was 8.7%. The median progression-free survival was signiifcant longer in the patients who stopped taking erlotinib more than 6 months than those less than 6 months (P=0.002). The median overall survival was signiifcant longer in the patients whose ECOG ≤2 than those ECOG >2 (P=0.038). The most common drug-related adverse events were rash and diarrhea. Conclusion:The retreatment of erlotinib could possibly prolong the survival time of patients who previously treated with erlotinib and had clinical beneift.

Objective To assess the safety and effectiveness of artificial ascites assisted thermal ablation for hepatic tumors adjacent to the gastrointestinal tract in patients with a history of abdominal surgery . Methods Thirty‐two patients (33 lesions located adjacent to the gastrointestinal tract) with a history of abdominal surgery were included in the study . Method ① :normal saline was injected into abdominal cavity to form water insulation band between liver and gastrointestinal tract . Method② :normal saline was injected with appropriate pressure to form local water insulation band between the liver and gastrointestinal tract . Method③ :normal saline was injected continuously at the interval between liver and gastrointestinal tract to flush away heat energy caused by ablation . All the patients were checked for gastrointestinal tract injury after ablation . During one month after ablation ,CT /MR was performed to evaluate whether the lesions were completely ablated . Results Respectively ,the numbers of lesion received method ① ,② and ③ were 27(81 .8% ) ,4(12 .1% ) and 2(6 .1% ) ,while the usage of normal saline were 400~2 000 ml ,600~800 ml and 1 000~1 500 ml . No gastrointestinal tract injury occurred . CT/MR scan during one month after ablation showed that all the 33 lesions had been completely ablated . Conclusions In patients with a history of abdominal surgery ,artificial ascites is a safe and effective method in assistance of thermal ablation for hepatic tumors adjacent to the gastrointestinal tract .

Objective The efficacy and safety of rectal instillation with formula for clearing heat, eliminating phlegm and relaxing bowel on treating encephalopathy complicated with pulmonary infection were evaluated by randomized controlled clinical trials. Methods Eighty eligible cases of encephalopathy complicated with pulmonary infection were randomly divided into treatment group and control group. Control group was given conventional treatment and treatment group was given rectal instillation treatment with formula for clearing heat , eliminating phlegm and relaxing bowel. The changes of index were observed before and after treatment in two groups including temperature,antifebrile time,white blood cell count,neutrophils ratio,C-reactive protein,procalcitonin, pneumonia severity index,and the efficacy score of TCM syndrome. Results Rectal instillation with formula for clearing heat and eliminating phlegm to relax bowel can be better improved encephalopathy complicated with pulmonary infection with syndrome of phlegm-heat obstructing in which the patients have yellow sputum, constipation,yellow urinary and other symptoms. It can reduce TCM syndrome score and level of serum calcitonin, relieve inflammation,enhanc antibacterial effect,and improve the clinical curative effect. Conclusions The curative effects of rectal instillation with formula for clearing heat and eliminating phlegm to relax bowel on treating encephalopathy complicated with pulmonary is definite which has no adverse reaction and safety use. It is worthy of further popularizing in clinic.