Objective To study the correlations between the leptin levels and the prevalence cervical carcinoma. Methods Blood samples were collected from 79 patients with cervical squamous cell carcinoma, 28 patients with cervical intraepithelial neoplasia and 35 healthy donors. The serum leptin concentrations were measured by enzyme linked immunosorbent assay. Meanwhile, tissue samples were obtained from the patients with cervical cancer and cervical intraepithelial neoplasia, Then the expressions oleptin in these tissues were detected by Western blot. Results The level of serum leptin in the patients with cervical cancer was significantly higher than those both in the patients with cervical epithelial tumor and in the healthy control group. the Western blot results also confirmed that the the expressions of leptin in the tumor tissues were atwas the highest level. Conclusion The elevated levels of leptin in serum and tumor tissues of patients with cervical cancer suggest that leptin may be involved in the occurrence and development of cervical cancer.

Objective The purpose of this study is to study the expression of miR -221 in cervical cancer tissues and its relationship with HPV infection .Methods HR-HPV infection was detected by HC2,and 30 cases of HR-HPV negative and 5 cases of HR-HPV positive cervical cancer tissues were collected .Mean-while,30 cases of normal cervical tissues in patients with benign disease were collected as control group .The ex-pression of miR -221was detected by RT -PCR,preliminarily investigating the relationship between miR -221 expression and the occurrence of cervical cancer and HPV infection .Through transfection of miR-221 and anti-miR-221 into HPV16-positive cervical carcinoma cell line Caski and HPV 16-negative cervical carcinoma cell line C33a,we observed the role of miR -221 on the migration and invasion of Caski cells and C 33a cells.Results Compared with normal cervical tissues , the expression of miR -221 in cervical cancer was significantly in-creased,the difference was statistically significant( P<0.01);and the expression of miR-221 was closely correl-ative to the patients with or without lymph node metastasis ,pathological grade and clinical stage ( P<0 .01 );the expression of miR-221 in HR-HPV positive cervical cancer tissues was higher than in HR -HPV negative cer-vical cancer tissues(P<0.01);transfection of miR -221 and anti-miR-221 could promote or downregulate C33 a and Caski cells migration and invasion ,and the changes between two groups had statistical significance ( P<0.05).Conclusion The increased expression of miR -221 in cervical cancer tissues is closely related to the oc-currence and development of cervical cancer and HPV infection .

Objective To analyze the clinical features and treatment of 68 cases of mucous membrane pemphigoid (MMP).Methods Clinical data were collected from 68 patients with MMP at the Department of Dermatology,Peking University First Hospital,between August 1987 and October 2012.Skin manifestations,histopathological and immunological findings were studied,with an emphasis on treatment regimens.Results The two most frequently involved sites were oral (67/68,98.5％) and conjunctival (23/68,33.8％) mucosa in patients with MMP.Immunological examinations included direct immunofluorescence test,indirect immunofluorescence test and enzyme-linked immunosorbent assay,with a positivity rate of 50％ (8/16),20.5％ (8/39) and 53.7％ (22/41) respectively.According to lesion distribution and disease severity,patients were given local therapy (n =5) or low to moderate dose of glucocorticoids (n =55,0.4-0.5 mg/kg or 30 mg per day).The condition was controlled until the dose of glucocorticoids reached 50 mg/d in three patients with cutaneous,oral,ocular,and other mucosal involvement.The time to onset of action of glucocorticoids at the controlling dose was (11.80 ± 5.88) days,and the duration of administration of glucocorticoids at this dose varied from 0.23 to 12 months (average,3.06 ± 2.84 months).Fifteen patients were almost cured,and four patients completely cured.Of the 15 patients almost cured,the time required for a 50％ reduction in the dose of glucocorticoids was (13.29 ± 5.76) months,and that required for the control of MMP was (17.33 ± 7.71) months.The dose of glucocorticoids was decreased to 76.5％ of the controling dose at 6 months after the control of MMP,and 58.1％ of that at 12 months.Oral candidiasis occurred in three patients during the treatment.Conclusions The diagnosis of MMP is mainly based on typical clinical and histopathological findings,and current immunological examinations are insufficiently sensitive.Usually,low to moderate dose of systemic corticosteroids combined with topical therapy can lead to satisfactory treatment outcomes.

Objective To investigate the effects of pemphigus vulgaris (PV) on pregnancy,childbirth and neonates.Methods Clinical data were collected from 8 pregnant patients with PV who visited the Peking University First Hospital and received follow up.Results Of these patients one developed PV in the third trimester of pregnancy,and the other 7 received treatment for PV and achieved complete subsidence of mucocutaneous lesions before pregnancy.Among the 7 cases,6 were treated with prednisone ＜ 10 mg/d,and 1 was treated with prednisone 22.5 mg/d.Finally,1 patient was lost to follow-up,1 patient underwent artificial abortion on about day 40 of pregnancy with no fluctuation in disease activity.Six patients delivered a normal birth weight baby at term,of whom,1 experienced fluctuation in disease activity in mid-pregnancy,1 suffered from recurrence of PV as a result of drug withdrawal at 2 months after delivery,and the other 4 showed no changes in disease activity.Four out of six neonates were healthy,while two were born with neonatal PV and healed after topical treatment.Conclusions Safe pregnancy and delivery can be achieved in patients with PV whose condition is completely under control with lowdose glucocorticoids after withdrawal of immunosuppressive agents.Although there is a risk of PV in neonates,the prognosis is optimistic.

Objective To investigate the image quality and radiation dose of 640-slice CT coronary arteriography(CTCA) with adaptive iterative dose reduction three-dimensional (AIDR3D)reconstrucction algoritym.Methods 640-slice CTCA with auto-matic exposure was performed on 84 consecutive patients.The original image data were reconstructed with AIDR3D and the filtered back-projection (FBP)algorithms at the image postprocessing workstation.Two experienced radiologists without knowing clinical information and reconstruction algorithms independently measured and calculated the image noise,signal-to-noise ratio and contrast-to-noise ratio with AIDR3D and FBP reconstruction algorithms.The qualitative image quality was assessed by using the 4-point scale.The radiation dose was calculated based on dose-length product exported on CT scanner.The quantitative and qualitative im-age quality with two kinds of reconstruction algorithm was analyzed statistically.Results The CTCA image noise was (27.20± 4.40)HU with AIDR3D and (60.00±12.40)HU with FBP,which with AIDR3D was decreased by 46.10% than that with FBP;the signal-to-noise ratio was 21.10 ± 5.10 with AIDR3D and 11.40 ± 2.80 with FBP,which with AIDR3D was increased by 84.70% than that with FBP;the contrast-to-noise ratio was 24.70±5.10 with AIDR3D and 13.50±3.20 with FBP,which with AIDR3D was raised by 82.20% than that with FBP,the differences in 3 indexes between the two kinds of reconstruction algorithm were statistically significant(P < 0.05 ).The CTCA qualitative image quality scores of proximal,middle and distal parts with AIDR3D were (3.90±0.30),(3.70±0.50)and (3.60±0.60)respectively,which all were higher than (2.60±0.60),(2.30± 0.60)and (2.10±0.70)with FBP respectively,the differences in 3 items between 2 kinds of algorithm had statistical significance (P <0.05).The total segments which could be used to diagnose the CTCA images with AIDR3D and FBP algorithms were 1 216 segments (96.50%)and 504 segments (40.00%),respectively,the difference had statistical significance(P <0.05).The mean ef-fective radiation dose was (2.10±1.00)mSv.Conclusion 640-slice CTCA with AIDR3D reconstruction algorithm not only signifi-cantly reduces the image noise than the conventional FBP algorithm,improves the quantitative and qualitative image quality,but also decreases the effective radiation dose.

Objective To investigate the feasibility and parameters for macrophage uptake oxygen and paclitaxel loaded lipid microbubbles (OPLMBs) in vitro.Methods OPLMBs were synthesized by mechanical vibration method and incubated with macrophages in different conditions in vitro.The ratio of macrophages uptake OPLMBs was observed by bright field microscope.Results The ratio of macrophages uptake OPLMBs was closely related to the size,concentration as well as the incubation time of OPLMBs with the macrophage.The ratio of macrophages uptake OPLMBs had a reverse relationship with the size of microbubbles.The highest rate of macrophages uptake OPLMBs was (18.9 ± 0.69)％ when the ratio of macrophages to microbubbles was 1 to 10,the time for macrophages co-incubation with microbubbles was 30 min,which was the suitable condition for macrophages uptake OPLMBs.Conclusions OPLMBs can be phagocytized successfully by macrophages in vitro.The size,concentration as well as the incubation time of OPLMBs with the macrophages are important parameters contributed to the efficiency of macrophage phagocytosis.

Objective To investigate the diagnosis and treatment of isolated celiac artery (CA) dissection and superior mesenteric artery (SMA) dissection.MethodsIntegrating clinical data of 119 cases with isolated dissection of the visceral arteries ( IDVA ) reported in literature and 2 patients with spontaneous isolated dissections of both CA and SMA treated in the Third Affiliated Hospital of Sun Yat-sen University,the diagnosis and treatment of IDVA were analyzed retrospectively.Results Among 119 cases reported in the literature,69 cases were symptomatic.All of the cases were diagnosed by contrast-enhanced abdominal CT or MRI.After IDVA was discovered,surgical treatment and endovascular stent placement was performed in 8 and 5 patients respectively,although the remaining 106 patients were managed conservatively with good results.In our 2 cases,the diagnosis of CA and SMA dissection was established by contrastenhanced CT and confirmed by conventional angiograghy.One patient was treated with anticoagulation and antihypertension,and the other patient was treated with endovascular stenting.Both of the patients didn't have discomfort during the follow-up period of 12 and 3 months respectively.ConclusionsContrastenhanced abdominal CT is the main tool for detection of IDVA.Most of the patients with IDVA can be managed conservatively,but close surveillance with imaging studies is necessary for early recognition of dissection progression.Patients with persistent or relapsed symptoms,and dissection progression,should undergo surgical or endovascular treatment.

OBJECTIVE:To provide basis and thinking for the development of medicines for treating depression. METHODS:Rats with adaptive feeding for 7 d were randomly divided into normal group,depression group and treatment group(citalopram hy-drobromide 1 mg/kg),8 in each group. Rats in depression group and treatment groups randomly received once low-density stimula-tion in a day [catching tail stimulation(1 min),frequent flashing stimulation(120 times/min,12 h),noise stimulation(4 h),ice water swimming stimulation(1 h),hot water stimulation(45 ℃,1 h),electric shocking foot(10 Hz,1 mA,each time interval of 100 ms,100 times),no food and no water(24 h)] for 21 d to reduce stress depression model. Body mass of rats in 0,7 d of adaptive feeding and 7,14,21 d of stress were respectively weighed,and horizontal activity and vertical activity frequencies in open field test were detected. After stress,rats were intragastrically administrated related medicines for 30 d,then 5-hydroxytrypta-mine (5-HT) and tryptophan hydroxylase (TPH) expressions in brain,liver,kidney tissues were determined. RESULTS:Com-pared with normal group,the increasing trend of body mass in depression group and treatment group slowed down from the 14 d of stress(P<0.05). The horizontal activity frequencies in depression group and treatment group in 14,21 d of stress slowed more ob-viously than the previous time point (P<0.05 or P<0.01);vertical activity frequencies in 21 d of stress slowed more obviously than the previous time point (P<0.05 or P<0.01). After 30 d of administration,horizontal activity and vertical activity frequen-cies in treatment group were increased more obviously than the previous time point (P<0.01). Compared with depression group,brain tissue of rats,indicating that TPH can be used as a target for depression treatment.

Objective To study the compliance of examinees,and effectiveness of colorectal distension with partially automated and individualized insufflation of air for dual-energy CT colonography.Methods Forty-six healthy adult volunteers without history of conditions affecting gastrointestinal motor function were enrolled in this study.One day before CT examination,volunteers were asked to orally administered 60 mL 4% diatrizoate meglumine five times for fecal tagging.Air was insufflated by using an inflator in a partially automated and individualized manner.The volunteers were initially asked to assume the right lateral decubitus position,then slowly turn to the supine position.Insufflation rate began at 1.5 L/min,and decreased to 0.5 L/min at later stage.The necessity and volume of air insufflation were decided according to effectiveness of colorectal distension on CT scout images,self-reported sensation of volunteers,and intestinal pressure.Dual-energy CT scanning was performed,and dual-energy blended images were acquired.Compliance of volunteers was statistically analyzed.The effectiveness of colorectal segments distension was statistically analyzed by using Kruskal-Wallis H test.Results No abdominal pain,bloating,nausea or vomiting were noted in the 46 volunteers.All volunteers easily accepted colorectal insufflation of air,with grade 1 compliance.The effectiveness of colorectal distension of grades 1,2,3 and 4 were 0%,2.1%,5.1% and 92.8%,respectively.The difference of effectiveness of colorectal segments distension had no statistical significance(χ2=6.19,P=0.288).The effectiveness of insufflation was poor in 6 colorectal segments,including 2 in sigmoid colon and 2 in rectum.Effectiveness of insufflation was suboptimal in 14 colorectal segments,including 4 in descending colon,4 in sigmoid colon,and 3 in rectum.Conclusion Compliance of examinees with partially automated and individualized insufflation of air for dual-energy CT colonography is excellent,with good effectiveness of colorectal distension.

Objective To evaluate the therapeutic effect of transarterial chemoembolization (TACE) combined with CT-guided 125I seed implantation in treating hepatocellular carcinoma (HCC) complicated by portal vein tumor thrombus(PVTT), and to discuss the technical points. Methods A total of 48 HCC patients with PVTT were enrolled in this study. TACE combined with CT-guided 125I seed implantation was carried out in all 48 patients. Based on the sites of PVTT, the lesions were classified into type A (PVTT within main portal vein), type B(PVTT within level-1 portal branch) and type C(PVTT within level-2 or more distal portal branch). According to whether the 125I seeds were directly implanted into the PVTT or not, the patients were divided into direct in-tumor thrombus implantation group (group A) and around tumor thrombus implantation group (group B; the 125I seeds were implanted in the liver parenchyma or in tumor tissue around the tumor thrombus within 1.7 cm region). The tumor thrombus control rate(TTCR), the disease control rate(DCR), the time to progress(TTP) and the overall survival rate of patients(OS) were determined, and the results were compared among different types and groups. Results TACE combined with CT-guided 125I seed implantation was successfully accomplished in all 48 patients. The median OS of type A, B and C was 8, 11.5 and 15 months respectively(P=0.003);the TTCR of type A, B and C was 61.5%, 70.8%and 72.7%respectively(P=0.548); the DCR of type A, B and C was 69.2%, 75%and 81.8% respectively (P=0.483); the median TTP of type A, B and C was 4.5, 8 and 11 months respectively(P=0.030);the median TTP of intra-hepatic tumor of type A, B and C was 5, 9 and 9.5 months respectively(P=0.012). The median OS in group A and group B was 10 and 11.5 months respectively (P=0.239); the TTCR in group A and group B was 69.2% and 68.2%respectively(P=0.591); the DCR of intra-hepatic tumor in group A and group B was 73.1% and 77.3%respectively(P=0.502); the median TTP of tumor thrombus in group A and group B was 7 and 10 months respectively(P=0.276); and the median TTP of intra-hepatic tumor in group A and group B was 8 and 9.5 months respectively(P=0.089). Conclusion For the treatment of hepatocellular carcinoma complicated by portal vein tumor thrombus, TACE combined with CT-guided 125I seed implantation can effectively control the progress of both the tumor thrombus and the intra- hepatic tumor and prolong patient’s survival time. Implantation of 125I seeds into the portal vein tumor thrombus and implantation of 125I seeds into the liver parenchyma around the tumor thrombus have the same therapeutic results. (J Intervent Radiol, 2015, 24:488-493)