Objective:To study the structural changes of upper airway i n the patients with Angle Ⅱ 1 malocclusion treated by orthodontic appliance. Methods:12 patients with Angle Ⅱ 1 malocclusion caused by mout h breathing were treated by rapid maxillary expansion (RME) of splint and Tip-E dge technology, the structure of upper airway was measured before and after trea tment,the data were analyzed. Results:After treatment PNS-Ba,SP P-SPPW,P-T,TB-TPPW,V-LPW,UC-LC and H-C3(hor) increased(P

OBJECTIVEThe aim of this study was to observe the effects of Tip-Edge Differential Straight-Arch Technique in treating Angle II (1) malocclusion.

METHODS13 adults with Angle II (1) malocclusion were treated with Tip-Edge appliance. The results of cephalometric measurements before and after treatment were statistically analyzed.

RESULTSThe average treatment time was 16.2 months. The results of cephalometric measurement showed that UIC-AP decreased by 3.72 mm (P < 0.01), LIC-AP decreased by 1.03 mm (P < 0.01), LIC-MP decreased by 1.59 mm (P < 0.01), L6-MP increased by 0.99 mm (P <0.05), the over jet decreased by 3.73 mm (P < 0.01).

CONCLUSIONTip-Edge appliance can effectively change the dento-alveolar position by means of the differential mechanics.

Adolescent ; Adult ; Cephalometry ; Female ; Humans ; Male ; Malocclusion, Angle Class II ; therapy ; Orthodontic Appliance Design ; Orthodontic Appliances ; Orthodontic Brackets ; Orthodontic Wires ; Tooth Movement Techniques ; instrumentation ; methods

In this paper, the effect of 5% (V/V) n-alkanes (e.g, n-Heptane, n-Octane, n-Decane, n-Dodecanen-Tetradecane and n-Hexadecane) on the growth and protease production of organic-solvent-tolerant- bacte-rium Bacillus licheniformis YP1 was studied. 5%(V/V) n-alkanes had no effect on the stability of YP1 prote-ase. 5% (V/V) n-alkanes had no notable influence on the yield of strain YP1 but dramatically affected theprotease production. The presence of n-Heptane, n-Octane and n-Decane deeply repressed the protease pro-duction; however n-Dodecane, n-Tetradecane and n-Hexadecane enhanced the protease production promi-nencely. The concentration of n-Tetradecane (1%-8%, V/V) had a direct ration with the protease production.The detailed experiments showed that the notable increase of protease activity appeared at the late logarithmof cultivation compared with the blank. The cell shape of YP1 strain remarkably decreased when grown inthe presence of n-Tetradecane. This is the first report about the effect of n-alkanes on the protease productionby the solvent tolerant bacterium.

Objective To explore the effect of hypoxia-inducible factor 1α(HIF-1α)in pathological scar and its specific mechanism,and the therapy target of pathological scar.Methods Real time PCR and Western blot was used to test the expression of HIF-1αin normal tissue and pathological scar,meanwhile to detect the effect of hypoxic environment on the expression of HIF-1α.Fibroblasts activity in pathological scar and normal tissue under different oxygen concentration(20%,10%,5%,2% and 1%)was determined by MTT method.Determine the different expression of HIF-1αmRNA and protein in normal environment(20% oxygen) and hypoxic environment(5%oxygen).The changes of the number of fibroblasts after the silence of HIF-1αby HIF-1αshRNA virus using flow cytometer.Results The Real time PCR and Western blot results showed that the expressions of HIF-1αmRNA and protein in fibroblasts of pathological scar was significantly higher than that in normal tissue(P<0.05),and the activity of the keloid fibroblasts in hypoxia environment(5%,2% and 1%)was also higher than that in normal tissue(P<0.05).The expressions of HIF-1αmRNA and protein in keloid fiber cells were higher in hypoxia environment(5% oxygen)than those in normal environment(20% oxygen),but when silence the expression of HIF-1αin keloid fibroblasts,the apoptosis of fibroblast in hypoxia environment(5%oxygen)were significantly higher than control group[(0.021 ±0.001)%vs.(3.739 ± 0.039)%,P<0.05].Conclusion HIF-1αincreases significantly in the pathological keloid fibroblasts and could promote the proliferation of fibroblasts and its vitality,which could accelerate the formation of pathological scar.

Objective To investigate the effect of Kang Shueling gel on the degree of inflammation in the patients with Ⅱ degree burns. Methods 86 patients with Ⅱ degree burns from July 2014 to July 2016 in our hospital were divided into the control group and the experimental group by lottery method with 43 cases in each group. The control group was treated with silver sulfadiazine, the experimental group was treated with Kang Shuling gel, the two groups of clinical curative efficacy, inflammatory factors, visual analogue scale (VAS), wound healing rate and wound healing time, wound infection rate and adverse drug reactions were compared. Results After treatment, the total effective rate of the experimental group was 95.34% higher than that of the control group 72.09%, the difference was statistically significant (P<0.05). The tumor necrosis factor-α(TNF-α), interleukin-6 (IL-6) levels of the experimental group was lower than the control group, the difference was statistically significant (P<0.05). The VAS of the experimental group was lower than the control group, the difference was statistically significant (P<0.05).The wound healing rate of the experimental group was higher than that of the control group on the seventh day and the fourteenth day, and the wound healing time was better than that of the control group, the difference was statistically significant (P<0.05). The wound infection rate of the experimental group was lower than that of the control group (P<0.05). There was no significant difference in adverse drug reactions between the two groups. Conclusion The curative effect of Kang Shuling gel on the treatment of Ⅱ degree burns patients worthy of affirmation, could reduce serum inflammatory factors level.

Objective We determined the proportion of doctors in Haidian community participating in the training of secondary prevention of ischemic cerebrovascular diseases related knowledge and the knowledge level of doctors so as to make a new targeted training plan,and assessed the effect of the training.Methods We enrolled 80 doctors,who filled out the questionnaire on secondary prevention of ischemic cerebrovascular diseases related knowledge,from 22 Haidian community center from March to July in 2014 in Beijing.The primary outcome was the proportion of doctors with the training of secondary prevention of ischemic cerebrovascular diseases related knowledge and the improvement rate of new training.Results Seventy (87.5％) community doctors didn't accept ischemic stroke secondary prevention system training.The understanding of Chinese Ischemic Stroke Subclassification and three cornerstones of secondary prevention of ischemic stroke(anti-hypertention,anti-lipidemia,antithrombotic) after the training was significant improvement (20％ vs.82.5％,P ＜ 0.05;31.25％vs.90％,P ＜ 0.05),while according to different causes classification subtype the doctors could make corresponding strategies of secondary prevention of ischemic cerebrovascular diseases.The rates of all community risk factors identification,community health education,lifestyle intervention,antihypertension,aspirin use,statin use,hypoglycemic treatment were both above 60％ no matter before the training or after the trainig.Conclusion Our results suggest that the community doctors in Haidian District lack corresponding knowledge of ischemic stroke secondary prevention.Further training of ischemic stroke secondary prevention is needed.

Anti-glutamic acid decarboxylase antibody-associated encephalitis is a kind of autoimmune encephalitis mediated by anti-glutamic acid decarboxylase antibody, which belongs to anti-neuronal intracellular synaptic protein antibody-associated encephalitis. Clinical manifestations include stiff-person syndrome, cerebellar ataxia, limbic encephalitis, seizures, etc., often associated with a variety of autoimmune diseases, rarely associated with tumors. Detection of anti-glutamic acid decarboxylase antibody is crucial for clinical diagnosis. Immunotherapy helps to relieve symptoms and improve prognosis. The incidence of this disease is low, and there are few reports at home and abroad. This paper intends to review the research on this encephalitis, hoping to improve the clinicians′ understanding and the level of diagnosis and treatment of the disease.

Based on the analysis of survey results and random interviews on medical students , this paper dis-cussed from the perspective of medical students under the present situation of doctor -patient relationship:satisfied with prescriptions basic medical quality , but there are still a large room to improve;to cure medical ethics appraisal is higher , but still need to strengthen medical ethics education; the parties are still lack of trust in the prescrip-tions;the doctor-patient relationship nervous .And put forward the following countermeasures on how to relieve the strain on the doctor -patient relationship , strengthening medical ethics education , strengthen the study and practice of doctor-patient communication , pay attention to legal consciousness propaganda and training , use media power to improve direction of publit opinion .

Objective To study the clinical features and differential diagnosis of Langerhans cell histiocytosis (LCH).Methods A case of LCH was reported and the literatures were reviewed.Results The of multisystem LCH patient,presented with a diabetes insipidus (DI) and panhypopituitarism,was 44 years old,and developed costal,tibial and femoral multiple lesions.The final diagnosis as LCH was made based on biopsy of tibia and lymph nodes.The biopsy specimen showed that the cells were infiltrated exhibiting the characteristic morphologic features of Langerhans cell (LC) with a convoluted shape,elongated nuclei exhibiting longitudinal grooves,and immunohistochemistry results revealed positive LC for the S-100,CD1a and Langerin immunostaining.Conclusions LCH may range from a solitary lytic bone lesion (for example eosinophilic granuloma) with a favorable course to a fatal disseminated leukaemia-like form.LCH typically involves the bone,lesions almost can be found in all organs.DI and CNS involvement often present as a puzzling syndrome,which renders the diagnosis problematicly,and often delays the diagnosis of LCH.The damage to the pituitary/hypothalamus axis results in life-long hormonal replacement therapy.

Objective To investigate the glucolipid metabolism in lipoprotein lipase (LPL) gene knockout mice, and to explore the possible mechanisms of insulin resistance. Methods 16- and 40-week old LPL gene knockout heterozygous mice( LPL + / -) and wild type ( WT) C57 mice were selected and divided into 4 groups:16-week LPL+ / -(n=6), 16-week WT(n = 6), 40-week LPL+ / -(n = 6), and 40-week WT(n = 6) group. LPL activity of post-heparin serum was examined. Serum triglyceride( TG) and free fatty acid( FFA) were measuzed. Intraperitoneal glucose tolerance test(IPGTT) in 4 groups of mice were performed. The glucose area under the curve (AUCG) and homeostasis model assessment for insulin resistance index and β-cell function index ( HOMA-IR, HOMA-β) were calculated to evaluate insulin sensitivity and the function of islet β-cells. Serum malondialdehyde (MDA) and total antioxidant capacity ( TAOC) levels were determined by means of colorimetric method. Using dihydroethidium( DHE) fluorescent staining method, reactive oxygen species ( ROS) levels in liver and skeletal muscle were determined. Results LPL activity levels of both 16- and 40-week LPL+ / - mice were significantly lower than that in WT mice of the same age. Serum TG and FFA of 40-week old LPL+ / - mice were significantly higher than those in WT mice of the same age(P<0. 05), and they were also higher than those of 16-week old LPL+ / - mice(P<0. 05). IPGTT showed that compared with WT mice, blood glucose level in LPL+ / - mice was significantly higher than that in WT group at 30 and 120 minute(P<0. 05), and fasting insulin and HOMA-IR were increased significantly(P<0. 05). Serum MDA of 40-week old LPL+ / - mice was evidently higher than that in WT mice by the same week(P<0. 05), while TAOC level was lower than that of WT mice (P<0. 05). ROS in skeletal muscle of 16-week old LPL+ /- mice was significantly increased. Meanwhile, ROS in both liver and skeletal muscle of 40-week old LPL+ / - mice was significantly higher than that in WT mice of the same age. Conclusion As time goes by, lipid and glucose disorders of LPL+ / - mice are aggravating, and insulin resistance develops evidently. Insulin resistance in LPL+ / -mice with dyslipidemia may be related to oxidative stress.