Humans ; Lead ; urine ; Lead Poisoning ; diagnosis ; urine ; Spectrometry, Fluorescence ; methods ; Spectrophotometry, Atomic ; methods

Objective To study clinical manifestations, diagnosis, treatment, as well as effect of surgical operation, of primary mediastinal large B-cell lymphoma (PMBCL).Methods Data of 19 patients of PMBCL with complete clinical and pathological records hospitalized at Peking Union Medical College Hospital during 1998 to 2008 were retrospectively reviewed and analyzed.Kaplan-Meier method was used to estimate their survival time and survival rate in comparison of efficacy in those with surgical operation to those without it.Results Overall three-year survival rate was 54% for all the 19 patients, 55% for those with surgical operation and 54% without it, respectively, with an average survival time of 44 months, 44 months for those with surgical operation and 42 months without it, respectively, but not reaching at statistical significance.Symptoms of superior vena cava syndrome in five cases at admission relieved immediately after surgical operation, but symptoms of superior vena cava syndrome in three of nine cases in non-surgical group relieved gradually one to three weeks after chemotherapy.Conclusions Surgical operation has no significant effect on survival in patients with PMBCL, but it can relieve syndrome of superior vena cava syndrome and provide accurate pathological diagnosis.

Background and purpose:With the recognition of prognostic factors and application of surgical- pathological staging,the treatment strategy of endometrial cancer has greatly changed.In this study,we investigated the treatment strategy,survival rate and prognostic factors of endometrial cancer.Methods:Five hundred and fifty-nine patients of endometrial cancer underwent primary surgical treatment from January 1996 to December 2006 in Cancer Hospital,Fudan University.The clinicopathologic parameters and prognosis were analyzed retrospectively.Results: Patients were followed up with the median period 36 months,25 cases experienced local relapse,24 cases were found to have distant metastases.The 3-year overall survival(OS)was 88.7%,3-year and 5-year disease free survival(DFS) was 82.7% and 80.9%.The 3-year overall survival(OS)were 95.5% in stageⅠ,95.3% in stageⅡ,75.9% in stageⅢand 32.4% in stageⅣrespectively(P

Objective: To chine and express the recombinant human endothelial monocyte-activating polypeptide-Ⅱ(EMAP-Ⅱ)and identify its anti-tumor biological activities.Methods: EMAP-Ⅱ_(147-312)was expressed by the expression vector pMAL-p2x and E.coli BL-21 and the product was purified.The production of tissue factor(TF)in human umbili- cal vein endothelial cell ECV-304 mediated by the recombinant EMAP-Ⅱwas determined by chemiluminescence sub- strate.The promoting effect of recombinant EMAP-Ⅱon TNF?-induced ECV-304 cell.Apoptosis was determined by flow cytometry.Its inhibitory effect on human pancreaic cancer cell SW1990 proliferation was determined by MTT method. Results:DNA sequencing verified that EMAP-Ⅱwas correctly cloned.The molecular mass of the protein identified by SDS-PAGE was consistent with the theoretic value.The productivity of recombinant EMAP-Ⅱwas 500?g per 1 g bacteria (wet mass).The purified product induced expression of tissue factor(TF)in ECV-304 cells;it also enhanced the sensi- tivity of ECV-304 cells to the apoptotic effect of TNF?([16.6?2.5]% vs[25.6?2.3]%,P

Oblective To evaluate the corneal healing of non-epuality diopter response histopathologically,immunohistochemically and ultrastructurally after excimer laser photorefractive keratectomy(PRK) with SVS APEX PLUS(Summit Technology Inc. USA) excimer laser, and the effects of corticosteroid on the healing. Methods PRK on 6 white rabbits(12 eyes) was performed on right eye of the rabbit for an attampted correction of -4.00 diopter and on left eye for an attempted correction of -8.00 diopter. The rabbits were divided into 2 groups randomly and each group included 6 eyes: Group FLM (3 rabbits, 6 eyes) and group CM (3 rabbits, 6 eyes). Fluoromethalone was given to group FLM,and chloromycetin to group CM. On 10d, 30d and 100d ,the eyes of one rabbit in each group were enucleated randomly. Half of each cornea was prepared for electron microscope observation (SEM and TEM)and the rest embedded in OCT compound for immunohistochemical study to examine Ⅲ -C and FN. Results All eyes were reepithelialized within 3d after PRK. Subepithelial corneal haze was observed on 15d,which was dominant on 30 or 60d. On 100d postoperatively,corneal hazes of 11 eyes were grades 0 or 0. 5,only 1 eye(the left eye of group CM) was denser haze (grade 1). On 3d postoperatively, one or two layers of corneal epithelial cell covered the ablation zone. On 30d after PRK,the epithelial cells showed hyperplastic changes. The cells were larger and increased from normal 5 or 6 layers to 7 or 8 layers of cells on 100d after PRK,epithelium was clear with more bright epithelium. Microplicae and microvilli were less than before. The expression of Ⅲ -C and FN in group CM was significantly more evident than that in group FLM. Conclusion The study show that despite recovery of a continuous and smooth epithelial layer and nearly normal corneal tissues on 100d after PRK,abnormalities of both epithelium and superficial stroma can be detected in the area of ablation. The ablation depth of stroma can influence the appearance of corneal haze after PRK. The microplicae and microvilli of rabbit cornea epithelium become less after PRK,which can be one of cause leading to ocular dry sensation in some patients.

ObjectiveTo explore the relationship between chronic kidney disease (CKD) and cerebral small vessel disease (SVD) in elderly patients. MethodsOne hundred and fifty-two elderly male CKD patients for experimental group and 158 elderly male for control group were recruited. Demographic data and vascular risk factors were recorded. White matter lesion (WML) was semi-quantitatively assessed by cerebral magnetic resonance imaging (MRI), and lacunar infarction (LI) was also calculated. Results(1) The prevalenees of hypertentsion and diabetes mellitus were higher in elderly CKD patients than those in control group (30. 9% vs. 19.0%, 23.7%vs. 14.6%;both P～0. 05). (2) The percentages of grade 2 and grade 3 WMLs were higher in elderly CKD patients than those in control group (34.9% vs. 24.1%, 25.7% vs. 16.5%;both P<0.05). Prevalence of LI was higher in elderly CKD patients than that in control group (45.4% vs.25.3% ,X2= 13. 70, P<0. 05). The similar Resultswere also obtained except for control subjects with hypertension and diabetes mellitus. (3) The logistic regression analysis showed that age, hypertension and low glomerular filtration rate (GFR) were closely associated with SVD in elderly CKD patients. ConclusionsHypertention and diabetes mellitus are risk factors for CKD in elderly patients. SVD is associated with CKD, and age, hypertension and low GFR may be risk factors for SVD in elderly CKD patients.

Citri Fructus identification by fingerprint and chemometrics was investigated in this paper. Twenty-three Citri Fructus samples were collected which referred to two varieties as Cirtus wilsonii and C. medica recorded in Chinese Pharmacopoeia. HPLC chromatograms were obtained. The components were partly identified by reference substances, and then common pattern was established for chemometrics analysis. Similarity analysis, principal component analysis (PCA) , partial least squares-discriminant analysis (PLS-DA) and hierarchical cluster analysis heatmap were applied. The results indicated that C. wilsonii and C. medica could be ideally classified with common pattern contained twenty-five characteristic peaks. Besides, preliminary pattern recognition had verified the chemometrics analytical results. Absolute peak area (APA) was used for relevant quantitative analysis, results showed the differences between two varieties and it was valuable for further quality control as selection of characteristic components.
Chromatography, High Pressure Liquid ; Citrus ; chemistry ; classification ; Discriminant Analysis ; Drugs, Chinese Herbal ; chemistry ; Fruit ; chemistry ; classification ; Mass Spectrometry ; Principal Component Analysis

Carcinoma ; genetics ; metabolism ; pathology ; surgery ; China ; Humans ; Male ; Oncogene Proteins, Fusion ; genetics ; Prostatic Hyperplasia ; genetics ; metabolism ; pathology ; surgery ; Prostatic Neoplasms ; genetics ; metabolism ; pathology ; surgery ; Proto-Oncogene Proteins c-ets ; genetics ; metabolism ; Reverse Transcriptase Polymerase Chain Reaction ; Serine Endopeptidases ; genetics ; metabolism

Background T helper cell 17 (Th17),a newly discovered subset of CD4+ T cells,have been found to play an important role in dry eye disease in animal model.Further investigation should be done on the immunopathogenesis of Th17 cells in dry eye patients.Objective This study was to analyze the expression status of interleukin-17 (IL-17) and IL-22 in tear and supernatant of peripheral blood mononuclear cells (PBMCs) of dry eye patients and their correlation with clinical symptom and sign.Methods Twenty Sj(o)gren syndrome (SS)patients,twenty non-Sj(o)gren syndrome (NSS) patients were included in Wuxi Second Hospital from 2010 to 2011,and twenty healthy volunteers were recruited at the same period.All of subjects understood the purpose and procedure of research and written informed consent was obtained form each subject initial of this study.Dry eye symptom questionnairs were self-answered and multiple dry eye disease-related clinical tests,including the breakup time of tear film (BUT),Schirmer Ⅰ test (S Ⅰ t) and corneal fluorescein staining were performed.The periphery blood of 3 ml and tear were collected in all the subjects,and IL-17 and IL-22 levels in supernatant of PBMCs and tear were detected by enzyme-linked immunosorbent assay (ELISA).The correlations between levels of IL-17 and IL-22 with BUT,S Ⅰ t,corneal fluorescein staining and dry eye scores were analyzed.Results The dry eye scores reduced,BUT prolonged,S Ⅰ t increased and corneal fluorescein dye decreased from SS group,NSS group to normal control group,with significant differences among the three groups (dry eye scores:H =40.81,P＜0.01 ; BUT:H =40.15,P＜0.01 ;S Ⅰ t..H=50.07,P＜0.01 ;corneal dye scores:H=40.52,P＜0.01).The concentration of IL-17 in the supernatant of PBMCs in the SS patients,NSS patients and normal controls were (964.92±124.83)ng/L,(718.85± 115.89)ng/L and (341.95±85.08) ng/L,showing a statistically significant difference among them (F=162.95,P＜0.01).The levels of IL-17 in the tear were (440.69±126.09) ng/L,(364.33±126.85) ng/L and (61.16±11.60) ng/L in the SS group,NSS group and normal control group respectively,exhibiting an elevated level in the SS group and NSS group compared with the control group (F=75.27,P＜0.01).In addition,the levels of IL-22 in the supernatant of PBMCs in the SS patients,NSS patients and normal controls were (98.77± 11.27) ng/L,(79.65 ± 11.01) ng/L and (32.78±9.34) ng/L,and those in the tear were (22.22 ± 8.96) ng/L,(14.92 ±4.35) ng/L and (10.47 ± 2.67) ng/L,with significant differences among the three groups (F =206.27,P＜0.01 ;F =19.87,P＜0.01).The significant correlations were found between the IL-17 and IL-22 concentration in the supernatant of PBMCs and tear with corneal fluorescein staining scores and S Ⅰ t.Conclusions The contents of IL-17 and IL-22 in PBMCs and tear upregulate in the SS and NSS patients,indicating that Th17 plays a key role in the immunity mechanism of dry eye.

Objective:To compare the dosimetric difference between knowledge-based planning (KBP) volumetric modulated arc therapy (VMAT) and intensity-modulated radiotherapy (IMRT) models for predicting the dose distribution during IMRT, aiming to investigate the feasibility of VMAT model to predict the IMRT plans.Methods:Fifty prostate cancer patients who had completed radiotherapy were selected. Manual planning was performed on each selected patient to generate the corresponding IMRT and VMAT plans. The IMRT and VMAT manual plans of the 40 randomly-selected patients were adopted to generate the KBP VMAT and IMRT models. The remaining 10 patients were utilized to predict IMRT plans. VMAT library-derived IMRT model (V-IMRT) and IMRT library-derived IMRT model (I-IMRT) were generated. Dosimetric parameters related to organ-at-risks (OARs) and planning target volume (PTV) were statistically compared among the manual IMRT (mIMRT), V-IMRT and I-IMRT plans.Results:Compared with the mIMRT plan, I-IMRT could significantly better control D max of the PTV ( P=0.039), whereas V-IMRT and I-IMRT plans could better protect the bladder and bilateral femoral heads (both P<0.05). V-IMRT plan could better protect the D max of bilateral femoral heads and the D 15% of the right femoral head (both P<0.05), whereas no significant difference was observed in other OARs and PTV (all P>0.05). Conclusions:Compared with the manual plans, KBP IMRT plan has significant advantages in protecting the OARs. KBP VMAT and IMRT models are both feasible in clinical practice, which yield equivalent accuracy for predicting IMRT plan.