Adult ; Carcinoma, Renal Cell ; pathology ; surgery ; Cerebellar Neoplasms ; pathology ; surgery ; Cystadenoma, Papillary ; pathology ; surgery ; Diseases in Twins ; pathology ; surgery ; Epididymis ; pathology ; surgery ; Genital Neoplasms, Male ; pathology ; surgery ; Hemangioblastoma ; pathology ; surgery ; Humans ; Kidney Neoplasms ; pathology ; surgery ; Male ; von Hippel-Lindau Disease ; pathology ; surgery

Objective To explore the diagnosis and therapy experience of vascular ring combined with tracheal compression in infants and neonates.Methods Sixteen cases(including 7 boys and 9 girls,aged 1 day to 12 months)with vascular ring combined with tracheal compression hospitalized in Guangdong General Hospital from Jun.2004 to Dec.2009 were enrolled.In these 16 children,13 cases had congenital heart malformations.All children underwent X-ray,echocardiography and spiral computed tomography examination.Nine cases received bronchoscopy study.Fifteen cases performed surgical division of vascular ring with cardiopulmonary bypass and 1 case underwent vascular ring division and tracheoplasty.Eleven cases received management of congenital heart defect simultaneously.Results Vascular ring anomalies included pulmonary artery sling in 5 children,right aortic arch-left ligmentum/aberrant left subclavian artery in 8 cases,double aortic arch in 1 case,innominate artery compression in 1 case,and pulmonary sling combined with right aortic arch-aberrant left subclavian artery in 1 case.There were 2 ring-sling complex cases in this study.The diagnosis of vascular ring were correctly made by echocardiography in 7 children and made by spiral computed tomography in all 16 cases.Two cases combined with tracheal ring died.In the follow-up study of 11 cases,5 cases were still vulnerable to wheezing.Conclusions The common presentation of tracheal compression in infants and neonates associated with vascular ring are tachypea,stridor,and dyspnea.Multi-slices spiral computed tomography is an important imaging modality.Surgical divisions of vascular ring are safe procedure in most cases and tracheal compression can be relieved by this operation.In patients with severe tracheal stenosis,tracheoplasty should be recommended.

OBJECTIVETo identify the serum protein markers for the gestational diabetes mellitus (GDM) complicated by pregnancy-induced hypertensive (PIH) syndrome to provide a molecular biological basis for the screening, prevention and therapy of the related diseases.

METHODSSerum samples were collected from the patients with GDM, PIH syndrome, and GDM complicated by PIH syndrome. IgG and albumins were removed from the samples before SDS -PAGE. The protein bands showing significant differences among the 3 samples were collected, digested and identified with mass spectrometry, and the function of the identified proteins was analyzed.

RESULTSThree SDS-PAGE were performed in parallel to confirm the differentially expressed proteins. Mass spectrometry indicated that the proteins showing obvious differences among the 3 samples were haptoglobin, protein SMG8 and apoptosis-inducing factor-1.

CONCLUSIONSThe protein markers identified in GDM complicated by PIH syndrome may be integrated into the proteomic database of gestational metabolic diseases. Identification of the associated protein markers may provide significant experimental data for the prevention, diagnosis and therapy of the related diseases.

Adult ; Apoptosis Inducing Factor ; blood ; Biomarkers ; blood ; Diabetes, Gestational ; blood ; diagnosis ; Electrophoresis, Polyacrylamide Gel ; Female ; Haptoglobins ; analysis ; Humans ; Hypertension, Pregnancy-Induced ; blood ; diagnosis ; Pregnancy ; Proteomics ; methods ; Young Adult

OBJECTIVETo build animal model of skull defect for the basic research of skull defects reconstruction with autogenous cranial bone dust and its relevance to the clinical application.

METHODSThree full-thickness parietal skull defects (A, B and C) were created in 30 New Zealand white rabbits. The size of all the defects was 1 cm in diameter. The defect A was left untreated as control. Defects B and C were reconstructed with autogenous cranial bone dust. Two pieces of pyroxylin membrane were placed on the top and bottom of the defect B. every 10 rabbits were killed for analysis at 4, 8, 12 weeks after operation.

RESULTSDefect A was largely repaired with connective tissue. Defect B was repaired rapidly with newly formed cancellous bone in the early period, but the following process of the growth, remodeling and maturing of the newly-formed cancellous bone was slowly. The bone ingrowth in defect C was more mature, but could not repair the defect completely, especially in the central zone. The grafted bone dust was absorbed gradually. Active angiogenesis could be observed in the newly formed bone. For the same defect, new bone had a greater amount of calcium at 12 weeks than at 4 and 8 weeks after operation (P < 0.05). And the calcium content of new bone was higher in defect C than in defect B at 8, 12 weeks after operation (P < 0.05).

CONCLUSIONSThe osteogenesis and angiogenesis are closely related to the time and location. The pyroxylin membrane can significantly promote the formation of cancellous bone in defect with autogenous bone dust graft during the early period.

Animals ; Bone Regeneration ; Bone Substitutes ; Bone Transplantation ; Female ; Male ; Materials Testing ; Osteogenesis ; Rabbits ; Skull ; Transplantation, Autologous

AIM AND METHODSTo investigate the effect of 2 mg/kg and 10 mg/kg losartan intraperitoneally (i.p) on arterial blood pressure (AP) and heart rate (HR) in rat and the involvement in the activity of habenulas neurons. Glass micropipette was used to record any changes of unit discharging of neurons in LHb and MHb before and after losartan was intraperitoneally injected.

RESULTSAP and HR were not significantly changed by 2 mg/kg losartan (i.p). However, AP was apparently decreased by 10 mg/kg losartan (i.p), but HR was unchanged. After 10 mg/kg losartan (i.p), 66.66% (12/18) unit discharging of neurons in LHb were increased in frequency, and 61.90% (13/21) in MHb were decreased.

CONCLUSIONAP of rat was significantly decreased by 10 mg/kg losartan (i.p). Depressor effect of losartan (i.p) was involved in the excision of neurons in LHb and the inhibition in MHb.

Animals ; Blood Pressure ; drug effects ; Habenula ; drug effects ; physiology ; Losartan ; pharmacology ; Neurons ; drug effects ; physiology ; Rats ; Rats, Wistar

OBJECTIVETo explore the effect of microRNA (miRNA)-mediated p65 gene knockdown on the proliferation and apoptosis of human breast cancer MDA-MB-231 cells.

METHODSp65-targeted miRNA plasmid was constructed and transfected into MDA-MB-231 cells via lipofectamine(TM)2000. The expression of p65 gene in the transfected cells at the mRNA and protein levels were detected by RT-PCR and Western blotting, respectively. The cell proliferation and apoptosis were measured by MTT assay and flow cytometry (FCM), respectively. The expressions of apoptosis-related proteins were detected by Western blotting in the transfected cells.

RESULTSCompared with the negative control group, the expressions of p65 mRNA and protein in p65miRNA-trasnfected cells were significantly down-regulated (P<0.05). MTT assay showed significantly lowered viability of MDA-MB-231 cells after the transfection (P<0.05). FCM showed an increased cell apoptosis rate in p65miRNA group compared with that in the negative control group (P<0.05). Caspase-3 and PARP were both cleaved into their active forms and the expression of these active forms was increased in p65miRNA group.

CONCLUSIONThe miRNA targeting p65 gene can inhibit the proliferation and induce apoptosis of breast cancer cells, and p65 gene might become a new target in gene therapy for human breast cancer.

Apoptosis ; genetics ; Breast Neoplasms ; genetics ; pathology ; Cell Line, Tumor ; Cell Proliferation ; Female ; Gene Knockdown Techniques ; Gene Silencing ; Humans ; MicroRNAs ; genetics ; RNA, Messenger ; genetics ; metabolism ; Transcription Factor RelA ; genetics ; metabolism ; Transfection

OBJECTIVETo construct a eukaryotic co-expression plasmid pIRES-fimA:IL15, which can be used as an immunoreaction-enhancing DNA vaccine against Porphyromonas gingivalis FimA, and investigate its expression in mammalian cells.

METHODSThe eukaryotic co-expression plasmid pIRES-fimA:IL15 was constructed by molecular cloning methods and characterized by restricted endonuclease mapping, PCR and DNA sequencing. The plasmid was transfected into mammalian cell CHO using Lipofectamine 2000. Expression of fimA gene was detected by Western blot and the protein secretion in cultural medium was analyzed by ELISA.

RESULTSEndonuclease mapping showed that the target genes fimA and IL-15 obtained by PCR had the same molecular size as predicted. The DNA sequencing data also indicated that inserted fimA gene and IL-15 gene had correct DNA sequence and orientation. The recombined plasmid could express FimA in mammalian cell CHO transfected. FimA and IL-15 could be secreted into cultural supernatant detected by ELISA.

CONCLUSIONA new eukaryotic co-expression plasmid pIRES-fimA: IL15 was constructed and it could be applied for further immunization in animal as an effective anti-Porphyromonas gingivalis vaccine.

Animals ; Cloning, Molecular ; Humans ; Interleukin-15 ; Plasmids ; Porphyromonas gingivalis ; Transfection

Acquired Immunodeficiency Syndrome ; epidemiology ; transmission ; Female ; Homosexuality, Female ; Humans ; Risk-Taking

OBJECTIVETo observe the antibody responses induced by recombinant plasmid plRES-fimA:IL15 via nasal immunization to BABL/c mice and the regulation of IL-15 to sIgA.

METHODSBABL/c mice were immunized with recombinant plasmids pIRES-fimA:IL15 and pIRES-fimA via nasal or intramuscular route. Serum IgG and salivary sIgA levels after immunization were analyzed by ELISA.

RESULTSNasal immunization with plasmids pIRESfimA:IL15 or pIRES-fimA elicited significant higher level of salivary FimA-specific sIgA responses compared with intramuscular immunization. There was no significant difference of the serum IgG responses between nasal immunization mice and intramuscular immunization mice. Nasal immunization with plasmid pIRES -fimA:IL15 elicited significant higher level of salivary sIgA response than with pIRES-fimA (P<0.05).

CONCLUSIONNasal dropping may be an effective mucosal immunization route of anti-Porphyromonas gingivalis DNA vaccine to elicit specific antibody responses in serum and oral region. IL-15 has a positive regulation effect to sIgA response.

Animals ; Humans ; Immunization ; Interleukin-15 ; Mice ; Mice, Inbred BALB C ; Plasmids ; Porphyromonas gingivalis

Objective To develop a loop-mediated isothermal amplification (LAMP) method for rapid diagnosing of Legionella pneumophila in the Pathogen Detection Department(PDD) or in small-scale laboratory. Methods Five primers (2 Inner Primers, 2 Outer Primers and a Loop Primer) for the LAMP test were designed by targeting the mip gene of Lpneumophila and reaction system of LAMP reaction was optimized. 12 strains of L.pneumophila, 45 local strains, 6 non-L.pneumophila strains, 11 other strains and 59 environmental water samples were analyzed to evaluate the specificity and sensibility of the LAMP amplification. At the same time, the results of the LAMP were also compared with biochemical culture and quantitative PCR methods. Results The amplification products of L.pneumophila turned green by visual inspection and had ladder-like pattern on the gel, but non-L.pneumophila and other products from the strains remained orange by visual examination and had no band on the gel. The detection rate of LAMP was higher than the biochemical culture and the real-time PCR methods. Reaction time of the LAMP method was only 1.5 h and the detection limit of LAMP assay was 5 cfu/reaction. In addition, the LAMP results could be determined only by visual inspection. Conclusion LAMP assay targeting the mip gene of L.pneumophila appeared to be rapid, specific, and sensitive for the detection of L.pneumophila. This method not only reduced the dependence of complicated equipment but also had a potential for wider use in the PDD, small-scale laboratory, emergency motor vehicle or for field survey.