Objective To evaluate the role of PI3K-Akt-HIF-1α signaling pathway in dexmedetomidine-induced reduction of damage to the unventilated lung during one-lung ventilation (OLV) in rats.Methods Forty adult male Sprague-Dawley rats,weighing 250-350 g,were randomly divided into 4 groups (n=10 each) using a random number table:two-lung ventilation TLV) group,OLV + normal saline group (group OLV),OLV + dexmedetomidine group (group D),and OLV + dexmedetomidine +LY294002 group (group DL).Bilateral lungs were ventilated for 2.5 h in group TLV,and the right lung was ventilated for 2 h followed by 0.5 h TLV in the other groups.The rats were sacrificed,the left lung was removed for determination of wet to dry lung weight ratio (W/D ratio),and expression of phosphorylated Akt (p-Akt) and hypoxia-inducible factor-1 alpha (HIF-1α) (by Western blot).Results Compared with group TLV,W/D ratio was significantly increased,the expression of p-Akt was down-regulated,and the expression of HIF-1α was up-regulated in the other three groups (P＜0.05).Compared with group OLV,W/D ratio was significantly decreased,and the expression of p-Akt and HIF-lα was up-regulated in D and DL groups (P＜0.05).Compared with group DL,W/D ratio was significantly decreased,and the expression of p-Akt and HIF-1α was up-regulated in group D (P＜0.05).Conclusion PI3K-Akt-HIF-1α signaling pathway is involved in dexmedetomidine-induced reduction of damage to the unventilated lung during OLV in rats.

Asia ; epidemiology ; Humans ; Non-alcoholic Fatty Liver Disease ; epidemiology ; Prevalence

The deposition of amyloid β-protein (Aβ is the key pathological basis of cerebral amyloid angiopathy (CAA) and Alzheimer's disease (AD). The current studies emphasis that the stability of internal environment between cells of the neurovascular unit is the key to maintain normal brain function. This article reviews the relationship between the Aβand the neurovascular unit injury, and we expect to provide some new ideas for the clinical prevention and treatment of CAA and AD.

DICOM standard is a compulsory international standard for the establishment of Integrated Hospital Information System (IHIS) and Picture Archiving and Communication System (PACS). This paper introduces such information of DICOM3.0 as its generation, components, operational mechanism and application. To understand DICOM standard exactly is helpful for the efficient operation of PACS.

There are many therapeutic drugs for rheumatoid arthritis(RA) treatment,but the pathogenesis of RA have not been fully understood,therefore no curable drug has been found.With increasing knowledge of the inflammatory process,especially in signaling,some drugs modifying disease progress and interfering signaling pathways have been studied.Cytokine inhibitors such as tumor necrosis factor-blocking agents and IL-1 receptor antagonist in clinical trials and in practice have resulted in dramatic improvement in RA disease control.Important molecular mechanisms of actions on total glucosides of paeony(TGP) and Glucosides of Chaenomeles speciosa(GCS) were showed to modulate G protein-AC-cAMP and Ras-MAPKs signaling pathways and to inhibit synoviacytes proliferation.This review focuses on agents which target various cytokines,other inflammatory mediators,antigen of cells,and signaling pathways.

OBJECTIVE:To review the current situation and the trend of development of oral hypoglycemic agents in our hospital.METHODS:The defined daily dose DDDs and the sales amount of oral hypoglycemic agents used in our hospital during2001～July,2004were analyzed statistically.RESULTS:The DDDs of sulfonylureas was decreasing,whereas it still accounted for more than70%of the total DDDs;the glipizide ranked the first in DDDs during these years;the DDDs of biguanides kept increasing year by year;the sales amount of?-glucosidase inhibitor and thiazolidine diketone drugs was in?creasing;all the‘Medical Insurance’drugs accounted for more than97%of the total DDDs.CONCLUSION:The oral hy?poglycemic agents used in our hospital is rational on the whole.

Objective:To investigate the clinic efficacy of gene transfected miniature pig skin as dressings to cure superficial Ⅱ degree burns of face in infants.Methods:Forty inpatients suffering from superficial Ⅱ degree face burn were included in our study.The ages of patients were 0.5 to 11 years and wound areas were 0.5% to 1.5% TBSA.A prospective randomized study was undertaken to evaluate the efficacy of CTLA4Ig gene transfected miniature pig skin while exposure therapy in traditional was taken as control.The healing time,scar,pain,skin graft and the rate of infection of wounds were observed.Results:The CTLA4Ig gene transfected miniature pig skin groups had less healing time,less pain and less infection rate.Conclusion:It is feasible that the CTLA4Ig gene transfected miniature pig skin is used as an effective and efficient cover to treat superficial Ⅱ degree burn wounds on face of infants.

Objective:To investigate the presence of Anti-Neutrophil Cytoplasmic Antibodies(ANCA) and their specific antigens in the patients with thromboangiitis obliterans(Buerger's disease,TAO).Methods:The TAO group includes 23 patients.The arteriosclerosis obliterans(ASO) group includs 25 pantients and the control group is health group includs 25 volunteers.Serum samples were investigated for ANCA prevalence by indirect immunofluorescent technique in TAO group,ASOgroup and health group.the reactivity to proteinase 3(PR3),myeloperoxidase(MPO),cathepsin G(CG),bactericidal/permesbility-increasing protein(BPI),elastase(HLE) and lactoferrin(LF) was measured by ELISA in TAO group and health group.Results:(1) There are 13 of 23 patients with TAO who are tested ANCA positive by indirect immunofluorescence,the ANCA prevalence is 52.2%.Only one patient is pANCA positive among 25 patients with ASO,the prevalence is 4%,and no ANCA are found in healthy controls.(2) ANCA were predominantly found in group II(66.7%;12/18) compared to group I(33.3%;3/9) and the levels of the titre of ANCA in the group II was higher than group I.(3) Only five of 12 ANCA-positive sera reacted with MPO,three of the twelve reacted with LF,one serum is HLE positive and one is BPI positive.No serum reacted with PR3 and CG.(4) Anti-MPO,anti-LF,anti-BPI and anti-HLE autoantibodies were found only in the severe group.Conclusion:The prevalence of ANCA and levels of Anti-MPO,anti-LF,anti-BPI and anti-HLE correlated with disease severity.Therefore,detection of ANCA can be a helpful serological test for the diagnosis of thromboangiitis obliterans.

Objective:To study the expression and its significance of P27 protein in hcpatocellular carcinomas(HCC).Methods:Expression of P27 protein is investigated by immunohistochemistry technique(SP) in 50 cases of hepatocellular carcinoma who had undergone surgery for HCC,22 cases of their adjacent noncancerous lesions and 9 cases normal liver control specimens.Results:The P27 LI in hepatocellular carcinomas was higher than that in the adjacent noncancerous lesions (P=0.002).Furthermore,the P27LI in adjacent noncancerous lesions was significantly highter than that in normal liver lesions (P=0.007).The expression of P27 was significantly correlated with tumor differentiation,stage,size,portal invasion,and intrahepatic metastasis.The post-operation survival time for patients with P27LI≥50% was longer than those with P27 LI

Improved medical postgraduate reexamination system is essential to the quality of students. In this study, organization of medical postgraduate reexamination was discussed from the perspectives of preliminary arrangements of medical postgraduate reexamination, fairness of reexami-nation process and improvement of the follow-up after the reexamination. Sufficient attention on the re-examination, effective supervision of the reexamination process and control of human factors were the three main factors for the successful medical postgraduate reexamination and effective guarantee for the improvement of postgraduate quality.