China ; Evidence-Based Medicine ; methods ; Humans ; Orthopedics ; methods

Objective To estimate the clinical effect of cutting titanium inlay crown in the restoration of short cracked molar. Methods Sixty-four short coronal cracked teeth were randomly divided into group A and group B. Group A were treated by crown. Group B were treated by titanium inlay crown. The curative effect was evaluated every year and lasted 2 years. Results One year after the repair, there was no significant difference in the achievement ratio between two groups (93.8%vs 100%,χ2=2.064, P>0.05). Two years after the repair, the success rate was significantly higher in group B (96.9%) than that of group A (68.8%,χ2=8.892, P<0.01). The failed cases of group A were treated by cutting titanium inlay crown, showing good retention. Conclusion The retention of a short cracked molar can be improved by means of cutting titanium inlay crowns.

Objective To investigate the clinical manifestations, endoscopic manifestations, histological characteristics, diagnosis and treatment of the primary gastrointestinal melanoma in China. Methods The gender, age, position, endoscopic manifestations, histological characteristics, treatment, prognosis of the primary gastrointestinal melanoma were gathered and analyzed by reviewing retrospectively the data of 2 cases seen at our hospital and 449 cases searched in CNKI from 1983 to 2015. Results The primary gastrointestinal melanoma was mostly seen in the rectum and anus, and secondly in the esophagus. A typical endoscopic finding was a protuberant or nodular tumor, with erosion or dirty surface on it. Most lesions were friable and easily hemorrhagic. The maximum diameters of most lesions, accounted for 83.3 %, were larger than 2.0 cm. The average value of the maximum diameters was (4.79 ± 2.67) cm. Most cases presented brown or black, followed by hoar. However, some lesions presented various colors, such as blue, red, even co-exited color or achromatic color. Preoperative misdiagnosed rate was 73.64 % and 1-year mortality was 54.19 %. Negative correlation was observed between survival time and lesion size, infiltration depth. Positive correlation was observed between lesion size and metastasis infiltration depth. Survival time had nothing to do with metastasis and age. Conclusion The primary gastrointestinal melanoma was highly aggressive, and usually found in the terminal age, usually together with extensive metastasis, misdiagnosed and poor prognosis. Knowing the clinical features, endoscopic manifestations, histological and immunohistochemical characteristics is the key to early diagnosis.

Objective To analyze the MRI features of fibrocystic breast disease (FBD). Methods 39 patients with pathologically proven FBD were retrospectively reviewed. The imaging protocol consisted of pro-contrast imagings and bilateral breast volume im-aging for breast assessme NT(VIBRANT). MRI features were interpreted based on the morphologic and enhancement kinetic de-scriptors defined on ACR DIRADS-MRI lexicon. Results There were 3 types on ACR BI-RADS-MRI lexicon in FBD,including 13 focal mass-type showing malignant enhancement kinetic pattern mostly;15 cyst-type with non-enhancement or mild enhance-ment,of them,1 case with periductal mastiffs showing strong enhancement and rapid up-slope and wash-out mimicking a breast cancer. 6 non-mass type usually showing benign enhancement kinetic pattern. In 5 patients,MRI did not show definite abnormal evi-dence. Conclusion MRI is of significant value in diagnosing FBD.

Abnormal activation of Notch1 plays pivotal roles in the molecular pathogenesis of human T-cell acutelymphoblastic leukemia (T-ALL). Activating Notch1 mutations present in over 60% of the T-ALL patients. However, so far,there is no therapy with little side effects that specifically targets the abnormally activated Notch1 pathway-induced T-ALL. Thepresent study briefly reviewed the effects of abnormal activation of Notch1 in the pathogenesis of T-ALL, as well as the currentapproaches targeting Notch1 and its limitations, thus providing some guidance for the research and development of clinicaltherapies targeting T-ALL.

Objective To investigate the effect of lipopolysaccharide (LPS) on stimulating high mobility group box-1 protein (HMGB1) mRNA expression in peritoneal macrophages in rats and its potential signaling mechanism. Methods Abdominal macrophages obtained from male Wistar rats were seeded on 24-well (1?10 6 cells/well) tissue culture plates. The cells were incubated for 3 days before they were stimulated with LPS, fludarabine (specific inhibitor of signal transducer and activator of transcription 1, STAT1), or rapamycin (specific inhibitor of signal transducer and activator of transcription 3, STAT3). After being stimulated, macrophages were denatured directly in tissue culture plates to determine HMGB1 mRNA expression. The time-dependent and dose-dependent responses between LPS stimulation and HMGB1 mRNA expression were analyzed, and the effect of treatment with fludarabine and rapamycin on HMGB1 mRNA expression was also observed. Results After being stimulated with 75-100ng/ml LPS, the HMGB1 mRNA expressions in macrophages were up-regulated markedly, peaking at 24-36 hours, and remained elevated up to 48 hours. It was found that the HMGB1 mRNA expression was significantly inhibited by treatment with either fludarabine (100?mol/L) or rapamycin (25ng/ml). Conclusions These data suggest that LPS stimulation can result in up-regulation of HMGB1 mRNA expression in peritoneal macrophages in rats. Janus kinase/STAT pathway may be involved in modulating HMGB1 mRNA expression in LPS-activated macrophages.

Aged ; Antigens, CD20 ; metabolism ; CD57 Antigens ; metabolism ; Diagnosis, Differential ; Follow-Up Studies ; Hodgkin Disease ; immunology ; pathology ; surgery ; Humans ; Leukocyte Common Antigens ; metabolism ; Lymphocytes ; pathology ; Lymphoma, B-Cell ; pathology ; Male

Child ; Fructose ; administration & dosage ; analogs & derivatives ; therapeutic use ; Humans ; Male ; Status Epilepticus ; drug therapy

Objective To observe the influence of recombinant human brain natriuretic peptide(rhBNP)on serum HMGB1 levels in canines'acute renal injury induced by endotoxin and explore its protective role of rhBNP in protecting canines'kidney against acute renal injury.Methods A total of 20 healthy dogs were randomly divided into four groups:blank group,sepsis shock group,low-dose intervention group and high dose intervention group, and there were 5 rats in each group.After establishing the model of canines'sepsis shock induced by endotoxin,15 canines (besides blank group)were randomly divided into 3 groups.As follows,5 μg/kg rhBNP was given to the low-dose intervention group,10μg/kg rhBNP was given to the high-dose intervention group.But nothing was given to control group.Systemic vascular resistance index(SVRI)at 0 h,2 h,4 h,8 h,12 h were observed by PICCO instrument.High mobility group box 1 protein (HMGB-1)and creatinine(CR)in blood samples at each time point were detected.After 12 hours,kidney samples were taken for histological examination.Results The results revealed that some renal tubulars epithelial cell were swelled,some epithelial cells were atrophy and interstitial cells swelled in control group under the light microscope.Kidney pathology score was 2-3.But these changes were improved in low-and high-dose intervention groups,and there were no significant difference in the latter two groups,kidney of both groups pathology score were 1-2.Compared with control group at the same point,CR of blood serum were significantly decreased in low-dose intervention group at 8 h,12 h(P<0.01), and high-dose intervention group significantly decreased at 4 h,8 h,12 h(P<0.01).Compared with low-dose intervention group at the same point,CR of blood serum in high-dose intervention group were significantly decreased at 4 h,8 h,12 h (P<0.05).Compared with control group at the same point, systemic vascular resistance index(SVRI)were significantly decreased in low-dose intervention group at 2 h (P<0.01 ),but significantly decreased in high-dose intervention group at 2 h and 4 h (P<0.01).Compared with low-dose intervention group at the same point,SVRI in high-dose intervention group were significantly decreased at 4 h (P<0.05 ).Compared with control group at the same point,the expressions of high mobility group box 1 protein (HMGB-1)in blood serum in low- and high-dose intervention groups were significantly decreased(P<0.01);Compared with low-dose intervention group at the same point,the expressions of HMGB-1 in blood serum in high-dose intervention group were significantly decreased (P<0.05).Conclusion rhBNP can effectively reduce canine kidney tissue injury mediated by endotoxin and improve kidney function,reduce SVRI,and its therapeutic effect of rhBNP was in a dose-response relationship.rhBNP can effectively reduce HMGB-1 levels in blood serum of sepsis shock canines,which may be associated with the decrease of late inflammatory factor HMGB1.

Objective To investigate the activation and role of signal transduction pathway of epidermal growth factor (EGF)-epidermal growth factor receptor (EGFR)-mitogen activated protein kinase (MAPK) in proliferation of human retinal pigment epithelial (RPE) cells. Methods Human RPE cells were stimulated with 0.1%,10% foetal calfserum (FCS) and EGF(0.1, 1, 10, 50 and 100 ng/ml)in 0.1% FCS Dulbeco′s modified Eagle′s medium (DMEM) and in 10% FCS DMEM for 3 days, respectively. Immunohistochemical staining and in situ hybridization were used to observe the expressions of EGFR protein and EGFR mRNA,respectively. Activation of MAPK was detected by immunohistochemical method with specific anti-phosphorylated ERK 1/2 antibody. Results The optimal concentrations of EGF were 10 ng/ml in 0.1% FCS DMEM and 1 ng/ml in 10% FCS DMEM. After 3 days of stimulation with EGF, phosphorylated ERK 1/2 staining was detectable in nucleus of RPE cells, whereas cells presented immunostaining for phosphorylated ERK 1/2 in the cytoplasm before stimulation. Conclusions EGF may improve the expression of EGFR protein and EGFR mRNA of RPE cells, and induced MAPK nuclear translocation in a concentration-dependent manner. EGF-EGFR-MAPK signal transduction pathway may play a key role in RPE cells proliferation, and serum exerts an important acceclerating function in the process.