Objective To understand the difference of Demodex prevalence among medical students living and studying together with different classes, sexes and nationalities. \ Methods\ Demodex folliculorum and Demodex brevis were detected by using cellophane tape on the nasolabial grooves. \ Results\ The overall prevalence was 51\^5% in 2 248 medical students. Prevalence in different classes and sexes was: freshman 42\^6%, sophomore 49\^6% and third year students 66\^8%; 55\^7% in males and 48\^7% in females. Prevalence in students with different nationalities was: Mongolian 49\^8%, Han 52\^8% and other minorities 64\^3%. \ Conclusion\ The Demodex prevalence in students of senior classes was higher than those from junior ones (P

Child ; Humans ; Myelodysplastic Syndromes ; diagnosis ; Prognosis

Objective To understand the relationship between Demodex and bacteria infection in rosacea (brandy nose), and to find effective means for the treatment. MethodsCellophane tape was used to detect Demodex on the nasolabial grooves and the face; sebum and tissue on face was scraped and cultured to examine bacteria under microscope. The hospital_made anti_rosacea lotion was used on the affected part two times a day for 7 days. Results It was found that 193 (74^2%) of 260 cases with rosacea were infected by Demodex and 209 (80^4%) of the patients were infected by bacteria. The overall effective rate of the treatment for rosacea was 73^5%. Conclusion Bacteria infection in rosacea is an important factor inducing rosacea. The curative effect of the anti_rosacea lotion is good.

This article brought forward the adverse vocational education model-organizing lower level of undergraduates to participate in the work of public health specialty. This model enhanced their understanding of this work and urged more students to devote themselves in this area. Besides, questionnaires were used to know how alumni performed and what was needed for a future professional of public health.

Objective To describe the sonographic appearance of mesenchymal hamartoma of the liver(MHL)and to analyze the diagnostic value of ultrasound.Methods Eleven surgically and pathologically confirmed cases of MHL from January 2005 to May 2011 in the Beijing Children′s Hospital were retrospectively reviewed.Results Ultrasound examinations showed 9 cystic hamartomas,including 7 multiseptate cystic and 2 monocystic lesions.Of the 7 multiseptate cystic hamartomas,4 had a honeycomb appearance and 3 had irregularly-distributed multiple cysts with varied septations.Of the 2 monocystic hamartomas,1 had a large cystic portion while the other was mainly solid with approximately 4% cystic portion of the tumor.Two cases in this group were solid,presenting with a well-defined homogenous mass.Conclusions Ultrasonography is an effective imaging modality for the diagnosis for MHL.A mixed or a mainly-cystic liver mass found in a child less than 2 years old should be suspicious for MHL.

[Objective] To study the inhibition effect of berberine on cell proliferation in acute T lymphocytic leukemia cell line Molt-4,and its mechanisms.[Methods] The logarithmic growing cell lines were incubated with 0,10,100 μg/ml berberine for various hours.The apoptosis induced by berberine was detected by flow cytometry,eletrophoresis and microscopy.The protein pro-Caspase-3 and p65 were determined by Western bolt assay.[Results]Treated with berberine,Molt-4 cells were found with apoptosis bodies by microscopy.By flow cytometry,it was found that number of G2/M cells was increased and number of S cells was reduced.Necrosis band was found in DNA ladder electrophoresis.The expression of pro Caspase-3 was activated partly and p65 was down-regulated in Molt-4 cells treated with berberine.[Conclusion]Berberine can induce Molt-4 cells apoptosis, and NF-κB、Caspase-3 have been shown to regulate the apoptosis programme.

Objective To approach the effect of ulinastatin (UTI) on protection of vascular endothelial cells in rats with sepsis and its mechanism.Methods Fifty-two Sprague-Dawley (SD) male rats were randomly divided into a normal saline pretreatment group (control group) and a UTI pretreatment group (UTI group), each groupn = 26. The rats in two groups were given lipopolysaccharide (LPS, 10 mg/kg) intra-peritoneal injection for the establishment of rat septic models. In UTI group, 18 hours before LPS injection, intraperitoneal injection of UTI 100 kU/kg dissolved in 5 mL normal saline was given, while in the control group, 3 hours before LPS injection, intraperitoneal injection of 5 mL normal saline was given to the rats for pretreatment. Respectively, at 0.5, 2, 4, 12, 24, 72 hours after model establishment, tail venous blood and myocardial tissue were taken. The levels of tumor necrosis factor-α (TNF-α), interleukins (IL-6, IL-10), vascular cell adhesion molecule (VCAM) and intercellular adhesion molecule-1 (ICAM-1) were detected by enzyme-linked immunosorbent assay (ELISA); the correlation between TNF-α and ICAM-1 was analyzed; the expression of ICAM-1 in myocardial cell was determined by immunohistochemistry.Results After model establishment, the levels of TNF-α, IL-6, IL-10, ICAM and VCAM in two groups were gradually increased, reaching the peaks at 24, 12, 12, 72, 72 hours, respectively. Compared with control group, the levels of TNF-α, IL-6, ICAM-1, VCAM of UTI group were significantly lower at various time points [24 hours TNF-α (ng/L): 119.8±28.9 vs. 190.2±30.4, 12 hours IL-6 (ng/L): 327.8±26.9 vs. 948.7±63.8, 72 hours VCAM (ng/L): 36.3±3.2 vs. 68.8±2.4, 72 hours ICAM-1 (ng/L): 115.6±11.6 vs. 129.4±8.2,P < 0.05 orP < 0.01], IL-10 was significantly increased [12 hours (ng/L): 80.7±1.9 vs. 42.3±4.9,P < 0.01]. TNF-αwas positively correlated to ICAM significantly (UTI group:r = 0.907,P = 0.050; control group:r = 0.961, P = 0.010). Immunohistochemistry showed that after modeling for 0.5 hour, basically no positive expression of ICAM-1 in myocardial cells was found in the two groups; in the control group, at 12 hours the positive expression of ICAM-1 was increased, and in UTI group, a little expression of ICAM-1 was seen; at 72 hours, the expression of ICAM-1 was significantly increased in both groups.Conclusion UTI can protect the function of endothelial cells in rats with sepsis by regulating the expressions of proinflammatory cytokine, anti-inflammatory cytokine, adhesion molecules, and improving the microvascular permeability.

To detect the effect of PDZ1, domain of postsynaptic density 95 (PSD-95), on apoptosis of hippocampal neurons induced by oxygen-glucose deprivation (OGD), Sprague-Dawley rat hippocampal neurons were infected with PDZ1-viruses after 21 days of plating. Twenty-four hours after infection, cells were treated with OGD for 1.5 h, then were incubated with DAPI and apoptosis-like cells were characterized, or were collected for co-immunoprecipitation and Western blot analyses. The results showed that: (1) PDZ1 overexpression was observed in hippocampal neurons; (2) Apoptosis induced by OGD was obviously decreased in neurons overexpressing PDZ1 (P<0.05); (3) Overexpression of PDZ1 prevented the binding of GluR6 to PSD-95; (4) Overexpression of PDZ1 inhibited MLK3 and JNK1/2 activation induced by OGD. These results indicate that overexpression of PDZ1 may prevent hippocampal neurons from apoptosis induced by OGD.
Animals ; Apoptosis ; Cells, Cultured ; Culture Media ; chemistry ; Disks Large Homolog 4 Protein ; Glucose ; chemistry ; Hippocampus ; cytology ; Intracellular Signaling Peptides and Proteins ; metabolism ; Membrane Proteins ; metabolism ; Neurons ; cytology ; pathology ; Oxygen ; chemistry ; PDZ Domains ; Rats ; Rats, Sprague-Dawley

Objective:To observe the clinical efficacy of point application with Da Huang (Rhizoma Rhei Cruda) powder at Shenque (CV 8) plus moxa-salt hot compress on the umbilicus for preventing gastrointestinal adverse reactions after chemotherapy for non-Hodgkin lymphoma (NHL).Methods:A total of 60 cases with NHL under chemotherapy were divided into two groups by hospitalization order,with 30 cases in each group.The control group was treated with routine nursing and the observation group was additionally given point application with Da Huang (Rhizoma Rhei Cruda) powder plus moxa-salt hot compress on the umbilicus,to compare the effect in preventing gastrointestinal adverse reactions after chemotherapy between the two groups.Results:The occurrence rates of constipation,nausea,vomiting and poor appetite on the second day and fifth day after chemotherapy were obviously lower in the observation group than those in the control group,with statistically significant differences between the two groups (all P＜0.05).Conclusion:The point application with Da Huang (Rhizoma Rhei Cruda) powder at Shenque (CV 8) plus maxa-salt hot compress on the umbilicus can produce more significant efficacy in preventing the gastrointestinal adverse reactions after chemotherapy for NHL than routine nursing.Moreover,it is simple and easy to be used and popularized.

Objective To investigate the drug resistant mechanism and homology of three strains of carbapenem-resistant Klebsiella pneumoniae (K.pneumoniae) isolated from different sites of one patient.Methods Three strains of carbapenem-resistant K.pneumoniae were isolated from femoral vein catheter tip,wound secretions and sputum of a patient with severe burns,respectively.Their carbapenemase,metallo-β-lactamase (MBL) and drug resistance genes were detected by modified Hodge test,double-disk synergy test and combination disk diffusion and PCR,respectively,and homology and biological typing were analyzed by enterobacterial repetitive intergenic consensus-PCR (ERIC-PCR) assay and multilocus sequence typing (MLST) technology,respectively.Results The carbapenemase and MBL of three strains of carbapenem-resistant K.pneumoniae were negative and positive,respectively.The blaNDM-1 gene was identified from the three strains,but other drug resistance genes such as blanC,blaGES,blaIMP,blaSPM,blaVIM,blaGIM and blaOXA-48 were not detected.ERIC-PCR showed that three isolates belonged to the same genotype,and MLST showed that they were type ST17.Conclusion Carring blaNDM-1 gene is the main cause leading to the drug resistance of three strains of carbapenem-resistant K.pneumoniae,and they belong to the same genotype.