Congenital adrenal hyperplasia(CAH) is a family of autosomal recessive disorders.The most frequent form of the disease is steroid 21-hydroxylase deficiency,which accounts for more than 90％ of all cases of CAH.In the pathogenesis of CAH,the cortisol synthesis impairement leads to excessive ACTH secretion of the adrenal glands,which ultimately results in adrenal hyperplasia and androgen overproduction.CAH causes signs of androgen excess including ambiguous genitalia in newborn females and rapid postnatal growth in both sexes.In the most severesalt wasting form of CAH,concomitant aldosterone deficiency may lead to salt wasting with life-threatening adrenal crises.Newborn screening,especially in males,reduces morbidity and mortality from adrenal crises.Glucocorticoid replacement remains the cornerstone of treatment.However,how to make a suitable therapeutic regimen of CAH is still a challenge to the pediatric clinician.

Objective:To explore the pretection of small dosage desamethasone to pulmonary function on acute lung injury model.Methods:54 male SD rats were divided randomly into control group,injury group and therapeutic group.Major observed marker consisted of count of cell sum,total protein level and TNF-? level of bronchoalveolar douche solution.Secondary marker consisted of lung coefficient,PAO2,TNF-? level in blood serum and histopathologic examination.Results: Alveolar texture in therapeutic group existed yet,but alveolar interval increased thickness,neutrophilic granulocyte infiltration relieved obviously,and a little bleeding in alveolar cavity.PAO2 in therapeutic group was higher than that of injured group(P

Objective To study the relationship between HLA-DRB1alleles and the systematic lupus erythematosus of the Zhuang Nationality in Guangxi Province.Methods Allele polymerase chain reaction-sequence specific primers(PCR-SSP)were used to study the HLA-DRB1allele genes in52patients with SLE and70healthy controls of the Zhuang Nationality in Guangxi Province.Results The allele frequencies of HLA-DRB1*1401and HLA-DRB1*16were significantly less in SLE patients than those of the controls(RR=0.28,? 2 =5.00,P=0.02and RR=0.39,? 2 =3.95,P=0.05).HLA-DRB1*08,DRB1*11and DRB1*13alleles were not found in these two groups.Conclusion Our data suggest that the HLA-DRB1*1401and HLA-DRB1*16might be protecting genes for SLE in Guangxi Zhuang nationality.No susceptible gene is found in our study.

Objective To investigate the effect of Sufentainil on myocardial ischemia-reperfusion injury and caspase-3 to rat heart. Methods Ninety Wistar rats weighing 200-300g were randomly divided into 3 groups(n=30):sham group(group S), ischemia-reperfusion group (group I/R)and Sufentainil group (group SF). Each group was divided into 3 subgroups according to the time phases at 30, 60 and 120min(n=10).In group I/R and group S the animals were received normal saline intravenously. In group SF sufentainil 5μg/kg NS 20ml was given. After 24 h, all animals were anesthetized with intraperitioneal 20% urethane 1 mg/kg, intubated and mechanically ventilated. The chest was opened and heart exposed via thoracotomy.In group S , left artery anterior descending artery(LAD) was not ocluded. While in I/R and SF group myocardial ischemia was introduced by clamping LAD for40 min. The animals were killed at 30, 60 and 120 min of reperfusion respectively(n=10each). Cardiac tropoin I(cTnI), expression of caspase-3 and apoptosis of cell in heart tissues were measured at the same time.Ultrastructure of myocardium taking the from apex was examined by electron microscopy at the end of 120 min reperfusion. Results Compared with group S, the concentration of cTnI was increased in the other 2 groups(P<0.05).cTnI was significantly lower in group SF than in group I/R(P<0.05). Expression of caspase-3 and apoptosis index induced by myocardial reperfusion were attenuatated in group SF(P<0.05). The damage of myocardial ultrastructure caused by myocardial I/R were also significantly improved in group SF. Conclusion Sufentainil may relieve the heart cellular apoptosis by decreasing caspase-3expressing.

Apoptosis ; Humans ; Periodontitis ; pathology

Adolescent ; Adult ; Child ; Child, Preschool ; Heart Defects, Congenital ; surgery ; Humans ; Young Adult

Objective To study the relationship between drug resistance and expression of the gene associated with drug resistance in Candida albicans,as well as the secretory proteinase activity of these isolates.Methods The minimum inhibitory concentrations(MIC)to fouconzole and itraconazole in 99 strains of Candida albicans isolated from respiratory tract were measured by broth microdilution method,the M27-A protocol recommended by NCCLS.The gene expressions of CDR1 and MDR1 were semi-quantitatively determined by RT-RCR.The secretory proteinase activity of these isolates was assayed by plate with medium containing bovine serum albumin.Results The rates of drug resistance to fluconzole and itraconazole were 4% and 12.1% respectively.CDR1 expression in the susceptible dose-dependent(S-DD)isolates was higher than those in the susceptible isolates and drug-resistant isolates(P

Schwann cells play an important role in diabetic peripheral neuropathy.Recently,to investigate the effect of high glucose on Schwann cell in vitro has become a new research hotpoint with the development of cell culture technology.This review concentrates on the biological effect of high glucose on Schwann cell.

This paper is to explore the feasibility of molecular sieve oxygen generator in the supply of oxygen in hospital. By introducing the different principles of oxygenation technology of pressure swing adsorption and oxygenation technology of heavy cooling, this article compared the merits of two ways in national regulations, safety, convenience, and economical efficiency. Oxygenation technology of pressure swing adsorption was more advanced, more automated and life-longer compared with cylinder oxygen supply and central oxygen supply. Molecular sieve oxygen generator is a new generation of oxygen generating equipment with a good application prospect, and can provide a better choice for hospital oxygen supply.

Objective:Human capillary lymphatic endothelial cells (LECs) were isolated and cultured to assist further investigation of the function of lymphatic vessels generation during cancer metastasis. Methods:Human skin was digested by type I collagenase. Cells were isolated using magnetic beads which were marked by monoclonal antibodies against the extracellular domain of VEGFR-3, and purified by cloning col-umn. The morphology and structure of cells were observed by microscopy. Immunophenotype was identified by immunofluorescence. Cell growth curve was recorded to measure the effect of VEGF-C protein. Results:LECs exhibited the typical cobblestone morphology as monolayer growth pattem under microscopy. Enlarged nucleus and rich cytoplasm with bubbles were found under electromicroscopy. LECs specific markers inclu-ding VEGFR-3, LYVE-1, Podoplaninand D2-40 all were positive. VIII factor as specific marker of blood ves-sel endothelium cells (BVECs) was negative. VEGF-C induced a marked increase of cell proliferation. Con-clusions:Human dermal LECs could be harvested successfully using collagenase digestion, immunomagnet-ic beads sorting and clonic column purification.