Objective To investigate the effects of mifepristone on the expression of fibronectin (FN) in human villus and deciduas after termination of pregnancy. Methods Women with choice of termination of pregnancy(< 49 d) were divided into medical abortion complete group (n=15), medical abortion incomplete group(n=15) and control group (with dilatation and curettage, n=15). The villus and deciduas were collected at the third day of medical abortion or at the day of dilatation and curettage. Immunohistochemical technique was used to examine the expression of FN in villus and deciduas of these three groups. Results The positive expression rates of FN in villus and deciduas of control group were significantly higher than those of two medical abortion groups(P < 0.017), and the positive expression rates of FN of medical abortion incomplete group were significantly higher than those of medical abortion complete group (P < 0. 017). Conclusion Mifepristone can decrease the expression of FN in human villus and deciduas and interfere the condition of embryonic growth, exerting the anti-gestational effect at extracellular matrix level.

Adolescent ; Female ; Humans ; Lymphoma, Extranodal NK-T-Cell ; pathology ; therapy ; Neoplasm Staging ; Nose ; pathology

Objective To evaluate the dynamic changes of T lymphocyte subsets in children with hand-foot-and-mouth disease(HFMD)and to provide new evidence for the therapy and prognosis.Methods Peripheral venous blood samples of 346 HFMD cases in acute stage who were hospitalized in Beijing Ditan Hospital from May 1,2008 to August 31,2008 were collected and T lymphocyte subsets were assayed by flow cytometer.Meanwhile,T lymphocyte subsets of 67 HFMD cases in recovery phase were also detected.The pathogens were determined by reverse transcriptionpolymerase chain reaction(RT-PCR)using pharynx swab samples from 99 cases.Different samples were compared by independent-sample t test,paired t test or variance analysis.Results The average levels of T lymphocyte subsets of HFMD children in different agc groups were all lower than reference levels of healthy children in according age groups.In severe cases.T lymphocyte(TL)/lymphocyte (L)ratio in all age groups,helper T cell(Th)/L ratio in children older than 1 year,TL,Th and Th/suppressor T cell(Ts)ratio in children of 1-2 years old were all lower than those in common eases (P＜0.05).The Th/L ratio tended to increase with the disease progression.Ratios of TL/L and Th/L in common cases were increased in recovery phase(TL/L:56.3±8.6 vs 61.1±9.1,t=2.56,P＜0.05;Th/L:30.2±7.2 vs 34.9±7.9,t=2.90,P＜0.05)and all indices of severe cases except Ts/Lratio and Th/Ts ratio increased apparently in recovery phase(P＜0.01).TL[(1.738±0.976)×10~6/Lvs(2.696±1.946)×10~6/L,t=2.17,P＜0.05],Th/L ratio(25.9±7.0 vs 30.2±7.2,t=2.34,P＜0.05),Th[(0.864±0.550)×10~6/L vs(1.459±0.879)×10~6/L,t=2.90,P＜0.01]and L[(3.352±1.458)×10~6/L vs(4.664±2.435)×10~6/L,t=2.32,P＜0.05]of severe cases in acute phase were all lower than those of common cases(P＜0.05),while those were not significantly different in recovery phase between two groups(P＞0.05).The T lymphocyte subsets of enterovirus(EV)71 positive cases were lower than EVT1 negative cases,but there was no significant difference between these two groups(P＞0.05).Conclusion T lymphocyte immune responses may be correlated with HFMD onset and progression.

Objective To learn research cooperation and evolution process in the field of health management in China so as to provide evidence for decision-making.Methods A total of 2180 literatures were selected to investigate author affiliation,high output author,research cooperation,high frequency keywords,and research hotspot through information visualization tool CiteSpace Ⅱ.Results Domestic health management research literature had showed an increasing trend since 2007 and leveled off during recent 3 years (average annual output 446.7).A total of 4 216 authors contributed to 2 180 publications,resulting in an average number of authors per paper of 1.93.Researchers from all autonomous regions and municipalities in China had their health management research published (top five:Beijing,Jiangsu,Guangdong,Shanghai and Sichuan),expect for Qinghai,Tibet,Guizhou and Hainan.Forty-six authors had an occurrence frequency of ≥5.Forty-four keywords showed an occurrence frequency of ≥15 and centrality degree＞0,including health check-up,health education,hypertension,diabetes,life behavior intervention and student health management.Conclusions Health management research have made a rapid progress in China during recent years.Increasing number of research institutions and teams have involved in health management research.However,scientific research cooperation in the field of health management is relatively loose,and interdisciplinary,cross-reginal and interagency cooperation is insufficient.

OBJECTIVEThe aim of this study was to determine the metameric color differences between natural teeth and three brands of commercially available resin teeth.

METHODSThe spectral reflectance and color coordinates of natural teeth and three brands of commercially available resin teeth of A2 shade were measured with a spectrophotometer (PR-650) according to the CIE L*, a*, b* and CIE XYZ color scale relative to illuminant D65, A, cool white fluorescent (CWF) and ultraviolet (UV), and the metameric indices were calculated to determine the metameric color differences between natural teeth and resin teeth.

RESULTSCIE L*, a*, b* values were influenced by the type of illuminants in both natural teeth and resin teeth. The pattern of spectral reflectance curves for natural teeth and resin teeth of A2 shade were different, while there were more than three crossing points among each curves, which meant the color of natural teeth and resin teeth of A2 shade might be the same under certain illuminant. The metameric indices between natural teeth and resin teeth of A2 shade were 3.48, 2.52 and 3.36 under illuminant A; 1.21, 1.90, and 2.79 under illuminant CWF; 1.59, 2.07, and 4.07 under illuminant UV. The metameric indices between resin teeth of different brand were 1.08, 0.10, and 1.01 under illuminant A; 1.46, 2.23, and 0.94 under illuminant CWF; and 2.55, 2.69, and 4.64 under UV.

CONCLUSIONChanges in optical properties of resin teeth of A2 shade relative to the different illuminants were different from those of natural teeth, the metameric effect between natural teeth and resin teeth of A2 shade were significant. Therefore, shade matching between natural teeth and resin teeth should be performed under more than one illuminant.

Color ; Composite Resins ; Humans ; Lighting ; Mouth, Edentulous ; Resins, Synthetic ; Spectrophotometry

Cells, Cultured ; Chemokine CCL4 ; Chemotaxis, Leukocyte ; drug effects ; Endothelial Cells ; cytology ; metabolism ; Homocysteine ; pharmacology ; Humans ; Macrophage Inflammatory Proteins ; biosynthesis ; genetics ; Monocytes ; physiology ; RNA, Messenger ; biosynthesis ; genetics ; Umbilical Veins ; cytology

OBJECTIVETo summarize the clinical features and to evaluate outcomes and to assess therapeutic effects in 34 children and adolescents with Hodgkin lymphoma treated with risk-adapted combination chemotherapy and low-dose, involved-field radiation therapy (IFRT) in China.

METHODFrom January 2003 to April 2009, 34 hospitalized children with Hodgkin lymphoma were enrolled into the BCH-HL 2003 protocol (revised CCG 5942) in our hospital. Pathological samples were reviewed centrally and classified based on the World Health Organization guidelines. Staging was based on clinical evaluation and was defined by the Ann Arbor staging system. The 34 patients were treated according to the different risk factors in three treatment groups (standard, intermediate, and high risk), and received risk-adapted combination chemotherapy and IFRT. All analyses were calculated by the statistical program SPSS.

RESULTOf the 34 Hodgkin lymphoma patients, 28 were male and 6 were female. The median age was 8.7 years (range from 4 years to 15 years) at the time of diagnosis. In terms of clinical presentation, 53% had bulky lymph nodes, 47.1% had more than 4 node regions involved and 44% had "B" symptoms at presentation. The distribution for stage of disease was 0% for Stage I, 21% for Stage II, 35% for Stage III and 44% for Stage IV disease. All patients had classical histology consisting of three different sub-discipline: 22 cases of mixed cellularity (64.7%). In pathological samples of 25 cases there was EBV encoded RNA (EBER) or latent membrane protein (LMP) staining. The overall survival (OS) was 100% and the 5-year event-free survival was 94.1% with a median follow-up of (26.1 ± 16.3) months. Two patients had early relapse after treatment was finished. Organ toxicity was limited to hematological grades III and IV at rates of 40% and 71% respectively.

CONCLUSIONChildhood Hodgkin lymphoma in our study was more frequently seen in male school aged children. Combined-modality therapy using risk-adapted chemotherapy with radiation is effective and well tolerated. The overall prognosis was good.

Adolescent ; Child ; Child, Preschool ; Combined Modality Therapy ; Female ; Hodgkin Disease ; therapy ; Humans ; Male ; Risk Factors ; Treatment Outcome

AIMTo study preventive and therapeutic effect of zinc sulfate on lung injury during superior mesenteric artery occlusion (SMAO) shock and their mechanism of action.

METHODSModel of rabbit SMAO shock was made. The effect of zinc sulfate on the malondialdehyde (MDA) in erythrocyte membrane and plasma, oxidase (XOD) in plasma, superoxide dismutase (SOD) in erythrocyte and MDA, SOD and pulmonary surfactant (PS) in lung tissues homogenate were observed.

RESULTSThe administration of zinc sulfate decreased MDA and XOD, prevented the reduction of SOD and PS, and alleviated lung injury.

CONCLUSIONIt is suggested that lung is injured during SMAO shock and zinc sulfate possesses preventive and therapeutic effect, through stabilized membrane.

Animals ; Female ; Lung ; metabolism ; Lung Injury ; drug therapy ; etiology ; metabolism ; Male ; Mesenteric Artery, Superior ; pathology ; Mesenteric Vascular Occlusion ; complications ; drug therapy ; metabolism ; Rabbits ; Shock ; complications ; drug therapy ; metabolism ; Zinc Sulfate ; therapeutic use

AIMTo investigate the effects of angiotensin converting enzyme inhibitor (ACEI) on apoptosis and the expression of Fas and Fas-L in the kidney of diabetic rats.

METHODSUninephrectomized Spraque-Dawley rats were used to induce diabetes by intraperitoneal injection of streptozotocin (65 mg.kg-1). Benazepril (10 mg.kg-1) was given daily by gavage from the next day of the induction to diabetes for 12 weeks. Apoptosis was evaluated by means of terminal-deoxynucleotidyl transferase mediated d-UTP nick end labeling (TUNEL). Flow cytometry and immunohistochemistry were used to detect the expression of Fas and Fas-L.

RESULTSCompared with those in the kidneys of control group, apoptotic cells were more in number and the expression of Fas and Fas-L was higher in the diabetic kidneys (P < 0.05). The number of apoptotic cells and the level of expression of Fas and Fas-L were reduced by benazepril treatment (P < 0.05).

CONCLUSIONAngiotensin converting enzyme inhibitor benazepril showed some renal protective effect on diabetic nephropathy, partly through inhibiting apoptosis by down-regulating Fas and Fas-L expression.

Angiotensin-Converting Enzyme Inhibitors ; pharmacology ; Animals ; Apoptosis ; Benzazepines ; pharmacology ; Diabetes Mellitus, Experimental ; metabolism ; pathology ; Diabetic Nephropathies ; metabolism ; pathology ; Fas Ligand Protein ; Kidney ; metabolism ; pathology ; Male ; Membrane Glycoproteins ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; fas Receptor ; metabolism

OBJECTIVETo evaluate the clinical characteristics of childhood lymphoblastic lymphoma (LBL) and therapeutic efficacy of BCH-LBL-2003 regimen modified from BFM-90 protocol. The drug-related toxicities and prognostic factors were explored at the same time.

METHODSFrom Janurary 2003 to December 2009, 112 newly diagnosed LBL patients at the Hematology Center of Beijing Children's Hospital were enrolled in this study. The patients were treated with modified BFM-90-LBL protocol.

RESULTSAt a median follow-up of 29 months (1 to 90 months), the patients were evaluated on day 33 and at the end of induction therapy. The bone marrow complete remission (CR) rates were 96.4% and 100%, respectively. Meanwhile, the complete remission (CR) rates of tumor were 77.7% and 94.5%, and the partial remission (PR) rates were 22.3% and 5.5%, respectively. The overall response rate was 100%. The 3-year overall survival (OS) rate was 89.1% and 5-year OS was 87.0%. The 3-year event-free survival (EFS) was 85.4% and 5-year EFS was 83.3%. Eleven cases relapsed during the treatment (4 BM relapses, 3 CNS recurrences, 3 primary site and 1 lymph node of neck and BM). Eleven patients died (3 died of infection and 8 died of progressive disease after relapse). All patients experienced grade 3-4 hematological toxicity. Univariate analysis indicated that lack of CR at the end of induction therapy, immunophenotype, bulky tumor and course of disease had prognostic significance.

CONCLUSIONSLymphoblastic lymphoma in childhood and adolescence is highly aggressive. BCH-LBL-2003 protocol is very effective. The treatment-associated side effects were tolerable. Patients who didn't get CR at the end of induction therapy, with T-cell immunophenotype, with bulky disease and the course of disease less than 30 days may have a poor prognosis.

Adolescent ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Bone Marrow ; pathology ; Child ; Child, Preschool ; Disease-Free Survival ; Female ; Follow-Up Studies ; Humans ; Infant ; Male ; Neoplasm Staging ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; drug therapy ; pathology ; Remission Induction ; Survival Rate