Objective To explore the relationship between Mel-CAM and adherence and invasion of trophoblastic cells and proliferation of Mel-CAM defined intermediate trophoblast.Methods Double immunohistochemical staining technique was used to detect the expression of Ki-67 in Mel-CAM defined intermediate trophoblast in human villi during the first trimester and hydatidiform mole.Results In this study there was a significantly stronger expression of Mel-CAM in hydatidiform mole than that in first-trimester villi (P

Objective To compare the clinical outcomes of rheumatoid arthritis (RA) patients treated with different disease modifying antirheumatic drugs (DMARD) by analysing the clinical data and improve the understanding of different DMARDs.Methods The clinical data of RA patients who were treated and followed-up during Jan.1999 to Mar.2003 in Peking Union Medical College Hospital were retrospectively reviewed.The clinical efficacy and radiotogical changes were compared between patients treated with one DMARD only,2 DMARDs combination and 3 DMARDs combination.The short-term and long-term effects among different dosage regimens in the three groups,and the long-term results of different duration of DMARD treatment were also compared.Resuits Three hundred and twenty-night patients had their clinical and follow-up data available for analysis.Among them,256 patients had DMARDs as their initial treatment.Some of the patients showed eorticosteroid in their treatment regimen while some patients did not have steroid.The clinical effectiveness had no significant difference between patients who had corticosteroid or not.Patients treated with 2 or more DMARDs combination had more improvement in ESR,CRP level,morning stiffness and number of swollen and tender joints compared with one DMARD alone.There was no significant difference in adverse reactions between the 3 groups treated with DMARDs.Conclusion DMARDs combination treatment can significantly and rapidly improve the symptoms and lab parameters in RA.

Objective: To determine the cognitive function and MRI-based measurement of MTL structures in patients with Alzheimer disease (AD) and to find a sensitive cognitive marker or specific MRI-based measurements for early diagnosis of AD. Method:Fifty-two AD patients, 27 VD (vascular dementia) patients and 35 aged matched normal control were recruited. The cognitive functions were evaluated with Alzheimer disease assessment scale-Cognitive portion (ADAS-Cog), Wechsler memory scale-revised and Mini-Mental Status Examination (MMSE). MTL structures, including hippocampal formation, amygdala and parahippocampal gyrus, were measured by MRI volumetric measurements. Result: Compared with VD patients and healthy controls, there was more pronounced reduction of performance on the main cognitive domains in AD patients, which indicated the diffused deficits of AD, including learning and memory, comprehension, language, orientation and concentration. The atrophy of MTL structures was more prominent in AD patients. A moderate diagnostic accuracy of 83.3% was achieved by Fisher's linear discriminant model, which comprised the scores of word recall, recall of test instructions, commands, constructional praxis and orientation in ADAS-Cog, and the performance on picture recall, visual recognition visual reproduction, logic memory and touch test in Wechsler memory test and part of memory in MMSE. In diagnose of AD, MRI based volumetry of left temporal horn of lateral ventricle and amygdalohippocampal complex had the sensitivity of 78.4% and accuracy of 77.1%. When cognitive indicators were combined with MRI based measurement, the diagnostic accuracy increased to 90.5%. Conclusion: AD produces more diffused cognitive deficit and severer atrophy of MTL structure. Combination of cognitive indicator with MRI based measurement can improve accuracy in diagnosis of AD.

Objective · To detect gingival thickness of the anterior teeth region of Han nationality youths in Shanghai by cone-beam computerized tomography (CBCT), and evaluate its clinical application feasibility and the gingival biotype. Methods · Firstly, gingival thickness in the same site (5 participators, 30 sites) was detected by bone sounding and CBCT respectively, and the data were compared. A total of 30 participators with healthy gingival were recruited to the study and examined by the CBCT, the gingival thickness of selected sites (330 sites) was assessed and compared. All the subjects were examined by the experienced doctors and classified into three groups, thick-type middle-type and thin-type. Gingival thickness range and the proportion of every type were obtained. All data analyses were performed using SPSS 13.0. Results · There was no statistical difference in the thickness of gingival measured by bone sounding and CBCT (P>0.05). The main gingival biotypes of Han nationality youths in Shanghai were thin-type and middle-type. The average gingival thickness of upper central incisors [(1.32±0.15) mm] was larger than those of upper lateral incisors [(1.07±0.16) mm,P=0.000] and upper canines [(1.08±0.18) mm, P=0.000]. Conclusion · CBCT is feasible for detecting gingival thickness. Gingival thickness of the upper central incisors is significantly larger than those of upper lateral incisors and upper canines. The main gingival biotype of Han nationality youths in Shanghai is middle-type, the proportion of thick-type is least.

Objective · To establish a replicative senescence model of human gingival fibroblasts (hGFs), investigate changes in aging related biological characteristics, and provide an efficient cell model for further study on the aging in periodontal diseases. Methods · hGFs were isolated from healthy gingival tissues and cultured with tissue block method in vitro. The tissue source was verified with immunofluorescence. hGFs were continuously cultured and cumulative population doublings (CPD) were calculated and used to draw the curves. Changes in the proliferative capacity of hGFs with CPDs of 10.82, 20.65, 29.52, 42.22, 60.79, and 70.03 were examined with CCK-8. Real-time PCR was used to evaluate changes in the mRNA expression of senescence-related genes p16INK4a and p21Cip1. Results · CPD curves showed that after continuous culture, the CPD value increased gradually and became stable after achieving 70.03. hGFs became flatter and more cell rocessesappeared with the increase of CPD value. The cell proliferative capacity declined and mRNA levels of p16INK4a and p21Cip1 significantly increased (P=0.000). Conclusion · A replicative senescence model of hGFs is established throughcontinuous culture. CPD curves can reflect the aging of hGFs.

Objective To examine the changes of the airway resistance(AR) in asthmatic bronchitis children before and after budeso-nide-solution inhaled therapy.Methods Fifty-six cases of asthmatic bronchitis children were randomly divided into A(regular treatment+budesonide-solution inhaled) and B groups(regular treatment),and 30 normal children at the same age as control group.The AR was eva-luated by Microloop lung function meter with MicoroRint sensor.The changes of AR were compared within above 3 groups.Results AR in asthmatic bronchitis children increased significantly compared with normal children.After 2 weeks treatment,AR decreased significantly in both A and B groups compared with that of 2 groups before therapy,AR in A groups declined to normal control level,but still kept higher level in B groups.Conclusions AR in asthmatic bronchitis children increase significantly.The effect of Budesonide-solution in asthmatic bronchitis children is partly via reducing AR to improve ventilated condition.

Objective To investigate the influence of indomethacin to the unite treatment effect on chronic phase myeloid leukemia (CML-CP) with interferon alpha-2b (IFNα-2b) and low dose cytarabine (LD-Ara-C).Methods 22 CML-CP patients were randomly divided into two groups.Control groups (10 cases) injected with IFNα-2b (3 million units),injection frequency was q.o.d,the duration of treatment was about 3-18 months,cytarabine (Ara-C) by slowly intravenous driped (30 mg/d).In this treatment schedule,every course of treatment sustained 10 days,and with a 2 weeks interval.During this process,patients in treatment group were treated with hydroxyl urea only when their WBC in peripheral blood exceed 20×109/L,otherwise,discontinue it.Treatment group (12 cases),on the first day of treatment with IFNα-2b and Ara-C,added indomethacin (25 mg) through oral administration,the frequency was t.i.d.During treatment in the two group,the end point of observation was completely hematology ease,at the same time,these indicators in the two groups needed to be compared,the time when WBC begin to fall,the time when WBC fall to normal range,the time when immature cells returned to normal,the time which complete hematological remission and the highest temperature of patients after IFNα-2b was subcutaneous injected.Results The time when WBC begin to fall in treatment group was (4.2±2.7) d,and the time was (5.0±2.5) d in control group (t =0.714,P ＞ 0.05).In treatment group,the time when WBC fall to normal range was(10.0±4.5) d,and the time was (12.0±4.5) d in control group (t =1.036,P ＞ 0.05).The time when immature cells returned to normal in treatment group was (14.2±4.8) d,and the time was (19.0±3.6) d in control group (t =2.609,P ＜ 0.02).The time which complete hematological remission was achieved in control group was (45.8±5.6) d,but it was (53.9±10.5) d in control group (t =2.314,· P ＜ 0.05).Meanwhile,the fever degree after IFNα-2b was subcutaneous injected obviously achieved improvement in treatment group (x2 =12.041,P ＜ 0.005).Conclusion The advantage of indomethacin to the unite treatment with IFNα-2b and LD-Ara-C on CML mainly lays in which cound alleviated the adverse reaction such as flu-like of IFN,and more,there are synergy effect in antagonist CML.

Objective To evaluate the value of fine needle aspiration (FNA) and core needle biopsy (CNB) in highly suspicious breast malignant lesions in terms of diagnostic accuracy,complication rate and cost-effectiveness.Methods We retrospectively reviewed records of patients with imaging diagnosis of BI-RADS 4c or 5 categories who have undergone either FNA or CNB under ultrasound guidance in Peking University People's Hospital from 2012 to 2014.Sensitivity,specificity,diagnostic accuracy,positive predictive,negative predictive,false positive rate,false negative rate,accuracy rate and unsatisfactory rate (non-diagnostic rate) were calculated and compared between FNAC and CNB.The complication of the procedures,operation time and cost were assessed.Results Among 638 consecutive cases,273 of them underwent FNA,and 365 underwent CNB.The accuracy rate of FNA and CNB were 99％ and 97.2％.The sensitivity,specificity,diagnostic accuracy,positive predictive,false positive rate and false negative rate were similar between the two groups.The unsatisfactory rate of FNA was significantly higher than that of CNB (25.3％ vs.10.9％,x2 =22.59,P =0.000).There was not severe complication in either groups,while subcutaneous ecchymosis and hematoma were more common in FNA group than in CNB group.The operation time of FNA was shorter than that of CNB (4.8 ± 1.3 min vs.15.5-± 1.7 min,P =0.000).The waiting time for final pathological report was shorter in patients undergoing FNA (1 vs.3 days).An estimated cost for FNA was RMB 447.5 Yuan/case,whereas that was 995 Yuan/case for CNB.Conclusions FNA and CNB are both accurate and safe preoperative diagnostic procedures.FNA is a simple and cost-effective method.

Objective:To observe the effect of Pidotimod and Thalidomid to enhance the immune response and protective immunity induced by the epitope Vaccines From W2b2a of Toxoplasma gondii in mice.Methods:Mice were immunized intramuscularly with Pidotimod and pcDNA3-W2b2a,thalidomide and pcDNA3-W2b2a,respectively,then the immune response and the survival time of mouse attacked by Toxoplasma gondii were observed.Results:After the immunization,the level of IFN-γin sera of mice inculated with pcDNA3-W2b2a and Pidotimod,pcDNA3-W2b2a and Freund adjuvant,pcDNA3-W2b2a and Thalidomid were significantly higher than pcDNA3-W2b2a (all P<0.05).After the immunization,IgG,CD4+/CD8+T cell ratio ,proliferation of T cell induced by pcDNA3-W2b2a and Pidotimod,pcDNA3-W2b2a and Freund adjuvant were higher than pcDNA3-W2b2a,pcDNA3-W2b2a and thalidomid ( all P<0.05).After challenged with highly virulent tachyzoites,the mean survival time in immunized groups were significantly longer than control group (all P<0.05).Conclusion:Pidotimod ,Thalidomid adjuvant can increase protective immunity of epitope Vaccines From W2b2a of Toxoplasma gondii in mice.

Background and purpose:Neoadjuvant chemotherapy is an excellent model for evaluation of predictive parameters.The goal of predictive parameters is to select patients who would most likely benefit from neoadjuvant chemotherapy.The objective of this study was to investigate the predictive value of biological markers for the patients' response to neoadjuvant anthracycline combined with taxanes chemotherapy.Methods:We investigated 160 patients with breast cancer who underwent 4 cycles of neoadjuvant anthracycline combined with taxanes chemotherapy,retrospectively.The expression of estrogen receptors(ER),progesterone receptors(PgR),Her2,Topo-Ⅱ and Ki-67 proteins were detected by immunohistochemical assay in core-needle biopsy specimens.The associations between biological markers as well as clinical and pathologic responses were analyzed.Results:The overall clinical response was 85%,including 28.8%(46/160) with clinical complete response(cCR) and 56.3%(90/160) with clinical partial response.The pathological complete response(pCR) was 14.4%.In the univariate analysis,absence of ER,PgR expression and over-expression of Her-2 were predictive of the cCR and pCR(P