Endodontics ; Humans ; Licensure, Dental

Cone-Beam Computed Tomography ; methods ; Humans ; Risk Factors ; Tooth Extraction ; Tooth Fractures ; diagnosis ; diagnostic imaging ; etiology ; therapy ; Tooth Root ; injuries

Anti-Bacterial Agents ; adverse effects ; Child, Preschool ; Clindamycin ; adverse effects ; Humans ; Infant ; Male ; Paraplegia ; chemically induced

As a rising automatic identification technology, radio frequency identification (RFID) is receiving considerable attention and eliciting widespread interest in medical institutions in China. Some medical institutions have begun exploring and developing RFID systems for kinds of applications. A majority of medical institutions pay insufficient attention to the issue of RFID interference with medical devices. Specialized standards for the application of RFID in healthcare environments are desired. And there are misalignments between existing technology standards. Further researches should be developed to study the influence on safety and efficiency of medical devices induced by RFID system.

Objective To explore the mechanism of cerebral infarction caused by hyperhomocystinemia.Methods A hundred and nineteen paitents with acute cerebral infarction were chosen for case group.According to their levels of plasm total homocystine,they were divided into two groups: hyperhomocystinemia group and nonhyperhomocystinemia group.Forty patents without cerebrovascular disease,hepatophy,nephrosis and thyroid gland disease were chosen as control subjects.Plasm levels of total homocystine,serum levels of MDA and IL-8 were measured respectively,their correlations were also studied.Results Plasma levels of tHcy(?mol/L)and serum levels of MDA(nmol/L)and IL-8 (ng/ml)showed a significant increase in case group(19.97,4.41?0.84,0.23?0.08)in comparison with control subjects(9.83,3.24?0.64,0.12?0.08),t values were 8.139,8.021,7.767 respectively(P

Objective:To investigate the levels of the specific antibody in the serum of convalescent SARS patients.Methods:The specific antibody in the serum of convalescent SARS patients were detected by indirect ELISA and double antigen sandwich method.Results:The levels of the specific IgG antibody in the serum of convalescent SARS patients is up to the maximum in the fifth week, the levels of the specific IgM is up to the maximum in the third week. The levels of the specific IgG in the serum of convalescent SARS patients is 1-7 times than that of the specific IgM. The positive detection rate of the specific antibody during 5-7 weeks in the serum of convalescent SARS patients is up to 100%.Conclusion:The levels of the specific antibody in the serum of convalescent SARS patients is up to the maximum in the fifth week, and the positive detection rate of the specific antibody is 100%.

Objective The current study was to investigate the clinical and pathological features of macroscopic hematuria associated acute kideny injury (MH-AKI) in patients with IgA nephropathy (IgAN) and its associated prognostic factors.Methods We performed an analysis on the clinical and pathological features of biopsy-proven IgAN patients diagnosed during 2004 to August of 2007,who had experienced MH associated AKI.The patients enrolled in the study were followed up.The renal lesions were evaluated with Katafuchi pathological scores of IgAN.Results 5 patients with IgAN had experienced at least one episode of MH-AKI,accounting for 1.3% of IgAN diagnosed during the same period and 13.5% of IgAN patients with macroscopic hematuria.High proportion of tubules filled with red blood cell casts and tubular injury were demonstrated in all biopsy specimens.Renal function of 3 patients completely recovered within 14 days.One patient (patient 4) got quick recovery in the first month of the disease but completely recovered 418 days later.The other patients only had an incomplete recovery during the 20-month follow-up.The incompletely recovered one had relatively an older age,longer persistence of MH,more sclerotic glomeruli and a more severe tubule-interstitial damage.Conclusion AKI is commonly seen during episodes of MH in patients with IgAN.Not all patients with MH-AKI showed a complete recovery.Age,duration of MH,proportion of glomerular sclerosis and the severity of tubular necrosis might be the risk factors of an incomplete recovery of renal function.

Animals ; Humans ; Lymph Nodes ; pathology ; Lymphangiogenesis ; physiology ; Lymphatic Metastasis ; Lymphatic Vessels ; metabolism ; pathology ; Neoplasms ; metabolism ; pathology ; Vascular Endothelial Growth Factor C ; metabolism ; physiology ; Vascular Endothelial Growth Factor D ; metabolism ; physiology

OBJECTIVE: To study the effect of bioactive glass (BG) on the dentin bond strength and the microleakage of hybrid layer. METHODS: In the study, 30 dentin planes were prepared from the third molars with no caries and equally assigned to the control group, BG group, and sodium trimetaphosphate (STMP)-polyacrylic acid (PAA)-BG group (S-P-BG group), randomly. After etched with 35% phosphoric acid, the dentin planes of BG group were pretreated with 0.5 g/L BG, and the dentin planes of S-P-BG group were pretreated with 5% STMP, 5% PAA and 0.5 g/L BG. No additional pretreatment was done to the dentin planes of control group. Then the dentin planes were bonded using 3M Single Bond 2 adhesive to 3M Z350XT composite resin, and cut into 0.9 mm×0.9 mm column samples, which were stored at 37 ℃ artificial saliva (AS). After 24 hours, 1 month, and 3 months, the microtensile bond strength test was performed. The data were analyzed using one-way ANOVA and LSD method. The morphology of the bond fracture interface was observed with scanning electron microscope. Other 27 teeth were collected and the enamel layer and roots cut off, with the pulp chamber exposed. 0.1% rhodamine B was added to the 3M Single Bond 2 adhesive, and then the adhesive was applied to complete the bonding procedures as above. The teeth were stored in 37 ℃ AS for 24 hours, 1 month, 3 months, and then 0.1% sodium fluorescein solution was placed in the chambers and stained for 1 hour. Confocal laser scanning microscopy was used to observe the interface morphology and microleakage of the hybrid layer. RESULTS: At the end of 24 hours and 1 month, there was no significant difference in the microtensile bond strength among the three groups (P>0.05). After 3 months of soaking, the S-P-BG group [(36.91±7.07) MPa] had significantly higher microtensile bond strength than the control group [(32.73±8.06) MPa] (P=0.026); For the control group and the BG group, the microtensile bond strength significantly decreased at the end of 3 months compared with 24 hours (control group: P=0.017, BG group: P=0.01); The microtensile bond strength of S-P-BG group af the end of 3 months had no significant difference in compared with 24 hours [(37.99±7.98) MPa] (P>0.05). Observation of the fracture surface at the 24 hours showed no obvious mineralization in all the three groups. After 1 and 3 months, mineral formation was observed in BG group and S-P-BG group, and no obvious collagen exposure was observed in S-P-BG group. Confocal laser scanning microscopy revealed no obvious differences in the morphology and quantity of the resin tag in the control group, BG group and S-P-BG group. At the end of 24 hours, leakage was found in all the three groups. The microleakage of the control group increased at the end of 3 months, while the microleakage of the BG and S-P-BG groups decreased. CONCLUSION BG pretreatment of dentin bonding interface can induce mineralization at the bonding interface and reduce the microleakage of the hybrid layer; pretreating the dentin bonding interface with STMP, PAA and BG may enhance the maintaining of the dentin bonding durability.
Dentin ; Dentin-Bonding Agents ; Glass ; Resin Cements ; Tensile Strength

OBJECTIVE:To provide the basis for the formulation of the health intervention strategy for medical and health insti-tutions'pharmacists and provide reference for other related research. METHODS:A total of 180 medical and health institutions' pharmacists in Heilongjiang province were investigated and evaluated by work satisfaction MMSS scale(modified)and quality of life(SF-36)scale,and the relevant data were analyzed statistically. RESULTS:A total of 180 questionnaires were distributed and 134 valid questionnaires were collected. The effective recovery rate was 74.44%. The average score of work satisfaction degree was (3.44±0.79),which was at the middle level. The highest score was the relationship with colleagues and the lowest score was wel-fare. The physical function,the physiological function and the social function dimension of the respondents were higher thanChi-nese norm. The scores of physical pain,general health,vitality,emotional function and mental health were lower thanChinese norm,and there was statistical significance between the scores of the other dimensions andChinese norm(P<0.05),except for the physiological function and vitality dimension. Multivariate analysis showed that gender,duties,education,length of service and work satisfaction score had an effect on quality of life(P<0.05),among these factors,work satisfaction score was positively correlated with quality of life. CONCLUSIONS:The quality of life of medical and health institutions'pharmacists still needs to be improved,which is related to many influential factors,and job satisfaction is an important influential factor.