Burns ; diagnosis ; pathology ; Hot Temperature ; adverse effects ; Humans ; Male ; Middle Aged

OBJECTIVETo review the experience in correction operation of pectus excavatum with non-thoracoscopic Nuss procedure.

METHODSFrom September 2005 to August 2007, 108 patients with pectus excavatum were surgically corrected by non-thoracoscopic Nuss procedure. There were 91 male patients and 17 female patients. The age was from 2 years and 10 months old to 25 years old with an average of 7 years and 9 months old. The Haller indexes were from 3.6 to 10.1 before the operation.

RESULTSThe operation in all patients had been performed successfully without any severe complications. The average time of operation was 40 minutes. The average bleeding volume during procedure was 10 ml. Uneventful recovery was achieved in all the cases. Excellent outcome was obtained in the follow-up of 2 months to 21 months in 92 patients.

CONCLUSIONSNon-thoracoscopic Nuss procedure for correction of pectus excavatum is safe and effective. It is unnecessary to perform the procedure into thoracic cavity so that there is less trauma and shorter time for the operation.

Adolescent ; Adult ; Child ; Child, Preschool ; Female ; Follow-Up Studies ; Funnel Chest ; diagnostic imaging ; surgery ; Humans ; Male ; Radiography ; Thoracic Surgical Procedures ; methods ; Treatment Outcome

To investigate the relationship between the single nucleotide polymorphism (SNPs) of the bcr and abl gene and chronic myelogeous leukemia (CML), the 9 sequence-tagged sites (STS) in bcr and abl gene were screened by DNA pooling and denaturing high performance liquid chromatography (dHPLC), and the results were varified by sequencing. The results showed that the polymorphism sites were detected in 4 out of the 9 STS fragments and there were 3 bases different from the reference sequence found in 3 fragments. In conclusion, the novel SNP in U07000 fragment shows significantly different frequencies between CML and controled people.
Chromatography, High Pressure Liquid ; methods ; Fusion Proteins, bcr-abl ; genetics ; Genes, abl ; genetics ; Humans ; Leukemia, Myelogenous, Chronic, BCR-ABL Positive ; genetics ; Polymorphism, Single Nucleotide ; Proto-Oncogene Proteins c-bcr ; genetics ; Sequence Analysis, DNA ; Sequence Tagged Sites

OBJECTIVETo observe the effects of polyethylene oxide (PEO) on microcirculation of normal rat hindlimb skeletal muscle.

METHODSSixteen male Wistar rats were anesthetized and equally and randomly divided into PEO group (administered with 10 ppm PEO solution) and control group (administered with equal volume of normal saline). The PEO solution or saline was separately injected through the caudal vein at a constant rate of 5 ml/h for 20 minutes. Using short axis view at right mid thigh region, contrast-enhanced ultrasonography was performed before and after the administration of solution. Electrocardiogram, blood pressure, and central venous pressure were also monitored.

RESULTSIn the PEO group, after the administration of PEO, microcirculation capillary volume increased from (20.78±2.63) dB to (22.40±1.94) dB (P=0.023), red blood cell velocity from (0.27±0.08) s-1 to (0.35±0.13) s-1(P=0.010), and capillary blood flow from (5.65±1.81) dB/s to (7.91±3.28) dB/s (P=0.013). In the control group, there were no significant changes in microcirculation capillary volume, red blood cell velocity, and capillary blood flow (all Pþ0.05) after the injection of normal saline. The changes of heart rates, blood pressures and central venous pressure were not significant after the administration of either PEO or saline (all Pþ0.05).

CONCLUSIONPEO can remarkably increase capillary volume, red blood cell velocity, and capillary blood flow in normal rat hindlimb skeletal muscle.

Animals ; Hindlimb ; blood supply ; Male ; Microcirculation ; drug effects ; Muscle, Skeletal ; blood supply ; Polyethylene Glycols ; pharmacology ; Rats ; Rats, Wistar

Human mesenchymal stem cells (MSC) are one kind of adult stem cells that can self-renew and give rise to one or more mesenchymal tissues, existing in bone marrow and other tissues. Not similar to CD34 recognizing hematopoietic stem cells, no such marker can be used yet to identify MSC. To isolate and identify MSC from bone marrow, anti-SH2 and SH3 monoclonal antibodies as markers to identify MSC were used. Two monoclonal antibodies were purified from ascites of SH2 and SH3 hybridomas-inoculated mice, flow cytometry and immunohistochemistry were used to identify plastic-adherent cultured MSC. And SH2 and SH3 antigen positive cells were isolated from bone marrow mononuclear cells (BMMNC) by immunobeads covered with secondary antibodies. And anti-SH2 and CD105 McAbs were used to label MSC at the same time to clarify whether they recognize the same antigen. The results showed that about 80% of MSC were antigens SH3 and SH2 positive. The SH2 and SH3 positive-selected cells were MSC while MSC accounted for less than 1% of negative-selected cells. When cells were labeled by SH2 McAb, they could not be labeled by CD105 simutaneously. In conclusion, antigens SH2 and SH3 are specific markers to identify and isolate MSC. Anti-SH2 McAb can replace anti-CD105 McAb to identify the specific marker on MSC.
Animals ; Antibodies, Monoclonal ; biosynthesis ; immunology ; Bone Marrow Cells ; cytology ; immunology ; Cells, Cultured ; Flow Cytometry ; Humans ; Immunohistochemistry ; Immunomagnetic Separation ; methods ; Mesenchymal Stromal Cells ; cytology ; immunology ; Mice ; src Homology Domains ; immunology

Objective To determine whether morphine having the ability to influence the antiviral effect of lamivudine(3TC)in vitro study.Methods MT2 cells were randomly assigned into morphine+3TC treatment group,morphine+naloxone+3TC treatment group,naloxone+3TC treatment group.Both 3TC and virus control groups were set up.The corresponding MT2 cells were treated with opiates antagonist(naloxone)for 0.5 hours before the 24-hours morphine treatment program was implemented while all of the groups were then infected with equal amounts of cell-free HIV-1 ⅢB strain and 3TC.HIV-1 p24 antigen in culture supernatants collected at days 3,4,5 and 6after infection status was tested and the inhibition of 3TC anti-HIV-1 p24 antigen of various treatment groups calculated.Results Inhibition of 3TC anti-HIV-1 p24 antigen of Morphine+3TC treatment group was the lowest when HIV-1 infected cells at 3rd and 4th day and showed significant difierence (P<0.05)when compared to the 3TC control.However,there was no statistically significant difference among them(P>0.05),when virus was infected the cells at 5th and 6th day.The difference of 3TC anti-HIV-1 p24 antigen inhibition between the morphine+naloxone+3TC treatment group and the naloxone+3TC treatment group was not significant(P>0.05).Similar results were obtained when these two groups were compared to the 3TC control group(P>0.05),respectively.The 3TC anti-HIV-1 p24 antigen inhibition of each treatment group reduced as the time of infection prolonged,showing a significant and time-course effbct.Conclusion The 3TC antiviral effect was reduced by morphine in the early stage of infection,and could be blocked by naloxone.

OBJECTIVETo investigate the renin-angiotensin system (RAS) in mesenteric adipose tissues and effect of angiotensin II on adipocyte differentiation.

METHODSThirty normal 8-week-old male Wistar rats were divided into groups on normal diet and high-fat diet. The rats on high-fat diet for 24 weeks developed the metabolic syndrome respectively. The mRNA and protein expression of mesenteric adipose tissue were measured by reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. Lipid drop in 3T3-L1 preadipocytes and mature adipocytes were observed using oil-red O staining. The fluorescence microscope was used to detect cytosolic-free calcium in 3T3-L1 preadipocytes and mature adipocytes.

RESULTSThe expressions of angiotensinogen, angiotensin converting enzyme, angiotensin II receptor type 1 in mesenteric adipose tissue were significantly increased in rats with metabolic syndrome compared with those in rats on normal diet (P <0. 05, P <0. 01). After administration of angiotensin II , no lipid droplet in 3T3 -L1 preadipocytes and adipocytes were observed, however, intensive lipid droplet in adipocyte was found after administration of captopril and candesartan. Angiotensin II increased the intracellular-free calcium concentration in preadipocytes (P < 0. 01 ) , which was blocked by captopril and candesartan; in contrast, angiotensin II effect was blunt in mature adipocyte. Captopril and candesartan partially recovered the angiotensin II -mediated increase of cytosolic-free calcium.

CONCLUSIONRAS in the mesenteric adipose tissues is active in rats with metabolic syndrome, and antagonization of RAS can recover the lipogenesis of adipocyte.

Adipocytes ; metabolism ; Adipose Tissue ; metabolism ; Angiotensin II ; pharmacology ; Angiotensinogen ; biosynthesis ; Animals ; Benzimidazoles ; pharmacology ; Calcium ; metabolism ; Captopril ; pharmacology ; Cells, Cultured ; Male ; Metabolic Syndrome ; physiopathology ; Peptidyl-Dipeptidase A ; biosynthesis ; RNA, Messenger ; biosynthesis ; Rats ; Rats, Wistar ; Receptor, Angiotensin, Type 2 ; biosynthesis ; Renin-Angiotensin System ; physiology ; Reverse Transcriptase Polymerase Chain Reaction ; Tetrazoles ; pharmacology

OBJECTIVETo investigate the risk factors of mortality in patients with severe chest trauma (SCT).

METHODSThe clinical data of 777 SCT [abbreviated injury scale (AIS) ≥3] patients who were treated in the Chongqing Emergency Medical Center from January 2006 to April 2009 were retrospectively reviewed. Stepwise logistic regression analysis was used to explore 15 possible mortality-related risk factors.

RESULTSSeven factors were found to be correlated with the mortality of SCT: age, hemorrhagic shock, multiple organ dysfunction syndrome (MODS), pulmonary infection, abdominal organ injury, Glasgow coma scale (GCS) score, and thorax AIS score. Among them five factors were the independent factors that might increase the mortality of SCT: hemorrhagic shock (B=1.710, OR=1.291, P=0.001), MODS (B=3.453, OR=1.028, P<0.001), pulmonary infection (B=2.396, OR=10.941, P<0.001), abdominal organ injury (B=1.542, OR=1.210, P=0.005), and thorax AIS score ≥4 (B=0.487, OR=1.622, P<0.001). Two factors showed protective effects: age ≤60 years (B=-0.035, OR=0.962, P=0.01) and GCS score ≥12 (B=-0.635, OR=0.320, P<0.001).

CONCLUSIONSAge, disease severity, and complications (hemorrhagic shock, MODS, and pulmonary infection) are independent risk factors of the mortality of SCT. Effective treatment programs targeting these risk factors may improve the outcomes of SCT patients.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Female ; Humans ; Logistic Models ; Male ; Middle Aged ; Retrospective Studies ; Risk Factors ; Thoracic Injuries ; mortality ; Young Adult

OBJECTIVETo investigate the polymorphisms of cluster of differentiation 14(CD14)gene promoters and explore whether such polymorphisms are associated with the susceptibility to multiple organ dysfunction syndrome(MODS) in Chongqing population.

METHODSThe single nucleotide polymorphisms of the promoter region of CD14 gene at position -1145 and -159 were detected using polymerase chain reaction-restriction fragment length polymorphism method in 106 patients with severe chest trauma, among whom 47 were with MODS.

RESULTSTrauma patients carrying G allele tended to have a higher risk of MODS than those carrying A allele at position-1145, the MODS scores in trauma patients carrying G allele were significantly higher than those carrying A allele (P=0.217 for dominant effect and P=0.037 for recessive effect), and the MODS scores in trauma patients carrying T allele were significantly higher than those carrying C allele at position -159 (P=0.048 for dominant effect and P=0.198 for recessive effect). The genotypes of CD14 gene at positions -1145 and -159 were significantly correlated with the MODS scores (P=0.043,P=0.046). Compare with single-point mutation, simultaneous two-point mutation had significantly higher risk of MODS (Pü0.01), while the difference of MODS scores showed no statistical significance (P=0.239).

CONCLUSIONThe polymorphisms of CD14 gene promoters are associated with MODS after severe chest trauma in Chongqing population.

Adult ; Female ; Genotype ; Humans ; Lipopolysaccharide Receptors ; genetics ; Male ; Multiple Organ Failure ; etiology ; genetics ; Polymorphism, Genetic ; Polymorphism, Restriction Fragment Length ; Promoter Regions, Genetic ; Thoracic Injuries ; complications

OBJECTIVETo investigate the impact of high-dose microbubbles induced by high mechanical index myocardial contrast echocardiography (MCE) on vascular permeability and its recovery time in rats.

METHODSThirty male Wistar rats were randomized into 4 MCE groups (groups A-D) and a control group. In the MCE groups, Evans blue was injected at 10 s before MCE (A), immediately after the end of MCE (B), and at 5 min (C) and 20 min after the end of MCE (D). In the control group, the microbubbles and Evans blue were injected at the end of a 5-min ultrasound exposure. All the rats were sacrificed 5 min after Evans blue injection, and the content of Evans blue in the myocardium and the percentage of Evans blue leakage area were determined.

RESULTSThe percentage of Evans blue leakage area in groups A, B and C were significantly higher than that in the control group (P<0.05), while the percentage was similar between group D and the control group (P>0.05). Evans blue contents in groups A and B were significantly higher than that in the control group (P<0.05), but groups C and D showed comparable contents with the control group E (P>0.05). No significant changes of the heart rates and premature beat number were observed during and after MCE in these groups (P>0.05).

CONCLUSIONHigh mechanical index MCE and a high contrast dose may induce increased microvascular leakage in rats, and the vascular permeability can recover in 20 min after MCE.

Animals ; Capillary Permeability ; drug effects ; Contrast Media ; pharmacology ; Coronary Vessels ; physiopathology ; Echocardiography ; Male ; Microbubbles ; Rats ; Rats, Wistar