Airway Obstruction ; complications ; etiology ; physiopathology ; Asphyxia ; etiology ; physiopathology ; Fibroma ; complications ; pathology ; Humans ; Infant, Newborn ; Oropharyngeal Neoplasms ; complications ; pathology ; Rare Diseases

Objective To report a retroperitoneal laparoscopic surgery for ureteropelvic junction obstruction (UPJO) by double renal veins.Methods A 28-year-old male patient with left low back pain for 6 months was diagnosed as left hydronephrosis and UPJO.A ureteral stent had been placed 3 months before and failed to improve hydronephrosis,so the ureteral stent was pulled out.CT scan showed that left UPJ went through the two renal veins,suggesting UPJO.Nephrogram showed that left GFR and right GFR were 35 ml/min and 34 ml/min,respectively.These results indicated mechanical obstruction of left upper urinary tract.The patient underwent retroperitoneal laparoscopic Anderson-Hynes dismembered pyeloplasty.Results The surgical procedure was successful.Two left renal veins were found,and the ventral one was in front of ureter,compressing the ureter.An aberrant renal artery went into left kidney with the ureter.0.5 cm stenosis of ureteropelvic junction was excised,and pyeloplasty was performed.A ureteral stent was placed into the ureter,then the pelvis and the ureter were sew up in front of the ventral renal vein.The surgical time was 240 min,and blood loss was 50 ml.Postoperative hospital stay time was 4 d.During 4 months' follow up,hydronephrosis was attenuated significantly.Conclusion Retroperitoneal laparoscopic surgery for UPJO with aberrant two renal vein might be a minimally-invasive and effective procedure.

Objective Overexpressions of epidermal growth factor(EGF)and EGF receptor have been associ- ated with progression and invasive phenotype of pancreatic cancer.However,the underlying molecular mechanism by which EGF worked in pancreatic cancer cells has not been completely understood.In this study,effect of EGF on the invasion and metastasis of pancreatic cancer cells and its regulatory mechanism were investigated.Methods The effects of EGF on the proliferation,adhesion and invasion of pancreatic cancer cells were detected by WST-1 prolif- eration assay,adhesion assay and invasive assay,respectively.The activity and expression of MMP-2 and MMP-9 were examined by zymography,Western blot and RT-PCR,respectively.The activity of NF-?B was examined by EMSA.Results EGF could significantly promote the invasiveness of pancreatic cancer cells but did not affect cell proliferation or adhesion.The expressions of NF-?B and MMP-9 were significantly increased by EGF,but EGF did not affect the activity and expression of MMP-2.Furthermore,EGF stimulated the NF-?B binding activity.Pre- treatment with NF-?B inhibitors,pyrrolidine dithiocarbamate(PDTC),could significantly inhibit the activity of NF-?B induced by EGF.Meanwhile,the EGF-induced expression and activity of MMP-9,as well as cell invasiveness were also inhibited by NF-?B inhibitor.Conclusion EGF could increase the expression and promote the invasiveness of MMP-9 via the activation of NF-?B in pancreatic cancer cells,which implies that NF-?B inhibitant,such as PDTC,may diminish the invasiveness of pancreatic cancer cells.

OBJECTIVETo investigate the relationship between (GT)n polymorphism and esophageal cancer by analyzing the connection between microsatellite polymorphisms in the promoter of heme oxygenase-1 and the clinicopathological characteristics of esophageal squamous cell carcinoma (ESCC) in Han chinese population.

METHODSThe (GT)n repeats in HO-1 gene in 83 male and 43 female hospital-based patients with ESCC (aged between 40 and 79 years with a mean of (61 ± 8) years) and 134 healthy control individuals were obtained by DNA sequencing. Polymorphisms of the (GT)n repeats were generally grouped into three classes based on allele frequencies: class S alleles (<25 repeats), class M alleles (25 to 29 repeats), and class L alleles (≥30 repeats). The correlation between susceptibility and clinicopathological characteristics of ESCC were analyzed by χ2 test. For in vitro experiments, the transient-transfection assay was performed to explore the correlation between different lengths of (GT)n repeats and promoter activity by assessing the promoter activities of HO-1 gene in cultured Ecal09 cells treated with H2O2 by analysis of cariance.

RESULTSHigher frequencies of L-allele (25. 8% vs. 14. 9%, χ2 = 9. 520, P = 0. 002), L-allele carrier (41. 3% vs. 27. 6%, χ2 = 5. 381 , P = 0. 020) were found in patients with ESCC. Furthermore, the lymphatic metastasis rate (63. 5% vs. 41. 8%, χ = 5. 685, P = 0. 017) and the detection rate of poorly differentiated ESCC cell (53. 8% vs. 28. 4%, χ2 = 8. 335, P = 0. 004) was significantly higher in L-allele carriers compared to non-L-allele carriers. In transfection experiments, promoter activities of 5'-flanking regions of the HO-1 gene in Eca109 cells transfected with the recombinant gene carrying (GT)16 repeat after treatment with H2O2 increased (F = 23. 615,P = 0. 008). In H2O treated control group, compared to (GT)26 and (GT)36, the basal promoter activities of HO-1 gene carrying (GT)16 repeat increased (F =41. 376, P = 0. 003; F = 50. 761, P = 0. 002).

CONCLUSIONThe long (GT)n repeats of HO-1 gene promoter can increase the susceptibility of esophageal squamous cell carcinoma and the risk of lymphatic metastasis.

Alleles ; Asian Continental Ancestry Group ; Carcinoma, Squamous Cell ; etiology ; pathology ; Esophageal Neoplasms ; etiology ; pathology ; Female ; Gene Frequency ; Heme Oxygenase-1 ; genetics ; Humans ; Hydrogen Peroxide ; Lymphatic Metastasis ; Male ; Microsatellite Repeats ; Polymorphism, Genetic ; Promoter Regions, Genetic ; Risk Factors ; Transfection

MTT Colorimetric method is usually applied for measuring the living animal cell number. By changing the reaction temperature and the reaction time as well as the colorimetric wavelength, the improved MTT colorimetric method was established to count the living bacterial cell number. This new method was used to measure the living cell concentration in the process for culturing bacteria PBW1. The results measured by the improved MIT colorimetric method and dilute plate method are similar. Compared with other methods including the dilute plate method, the improved MTT colorimetric method has many advantages such as accuracy, quickness.

Biomarkers ; blood ; Child ; Chorionic Gonadotropin ; blood ; Follicle Stimulating Hormone ; blood ; Growth Disorders ; etiology ; Humans ; Klinefelter Syndrome ; complications ; diagnosis ; genetics ; Magnetic Resonance Imaging ; Male ; Mediastinal Neoplasms ; complications ; diagnosis ; surgery ; Puberty, Precocious ; diagnosis ; etiology ; Teratoma ; complications ; diagnosis ; surgery ; Testis ; pathology

Objective To retrospectively evalute the value and accuracy of adenosine stress and rest SPECT myocardial perfusion imaging. Methods A total of 1858 patients who were suspected or known for coronary artery disease (CAD) underwent 99Tcm-methoxyisobutylisonitrile ( MIBI ) myocardial perfusionSPECT with adenosine infusion using the standard 2-day protocol. Images were interpreted by two or more experienced nuclear medicine physicians . Coronary angiography was carried out in all patients within one month. Kappa test was used to analyze the correlation between the two imaging studies. Results By coronary angiography, there were 957 patients diagnosed of CAD (one-, two-, three-vessel disease: 506,256,195, respectively) and 901 normal. Stenosis was found in 1603 vessels, including left anterior descending coronary artery (LAD): 765, left circumflex coronary artery (LCX): 399 and right coronary artery (RCA): 439. By adenosine induced stress myocardial perfusion imaging, 876 patients were diagnosed of myocardial ischemia ( sensitivity: 876/957, 91.54% ) and 651 patients had negative findings ( specificity:651/901,72.25 % ). The positive and negative predictive values were 77.80% ( 876/1126 ) and 88.93% (651/732), respectively. The correlation coefficient between the two imaging studies was 0.641. The vessel-based sensitivity was 81.31% (622/765) for LAD, 56.64% (226/399) for LCX and 70.62% (310/439) for RCA, respectively. The sensitivity for detection of one-, two-, three-vessel stenosis was 87.55% (443/506), 94.92% (243/256) and 97.44% (190/195), respectively. The side-effects was mild and transient with an incidence rate of 84.12% ( 1563/1858), without major cardiac events. Conclusion Stress myocardial perfusion imaging induced by adenosine is reliable for the evaluation of myocardial blood supply in CAD patients.

Lu Dangshen, a traditional authentic medicinal material of Codonopsis Radix is mainly produced in Shangdang (Changzhi) area of Shanxi Province. Baitiao Dangshen is mainly produced in Gansu Province. Codonopsis Radix contains many kinds of components such as phenylpropanoids, polyalkynes, alkaloids, terpenes, fatty acids, flavonoids, and so on. At present, the effect of producing areas on its chemical compositions has not been systematically studied. This study analyzed the differences of metabolites among Codonopsis pilosula from different producing areas by UPLC-HRMS. PCA, OPLS-DA coupled with Thermo mzcloud online and local databases were used to compare the overall differences of metabolites among Codonopsis pilosula from different producing areas, and the chemical constituents were identified to further screen and find out the different metabolites and analyze the metabolic pathways by information retrieval in HMDB, PubChem, Chemspider and KEGG databases. The results showed that 72 differential metabolites were identified in this study. There were 15 kinds of up-regulated and 57 kinds of down-regulated metabolites of Lu Dangshen compared with Baitiao Dangshen. The top 30 metabolic pathways were analyzed by KEGG enrichment, and the most important metabolic pathways were phenylpropanoid biosynthesis, which was demonstrated that phenylpropanoid biosynthesis pathway and related intermediate metabolites could be used as the characteristics of distinguishing Lu Dangshen from different habitats of Codonopsis pilosula. The present study provided a basis for analyzing the influence of producing areas on the chemical components of Codonopsis pilosula and reasonably evaluating the quality of Codonopsis Radix, and also provided a new idea for expounding the authenticity of Lu Dangshen.

OBJECTIVETo explore mid-term follow up results of distal fixation prosthesis in treating unstable intertrochanteric fractures in elderly patients.

METHODSFrom May 2008 to March 2014,58 elderly patients with unstable intertrochanteric were treated with distal fixation prosthesis, among them, there were 15 males and 43 females aged from 75 to 87 years old with an average of 83.2 years old. Fracture were classified according to Evans classification, 39 cases were type I c and 19 cases were type I d. Surgical risk was evaluated before operation, 9 patients were performed total hip arthroplasty and 49 patients were performed prosthetic replacement hip joint function of patients with different age period, Evans classificaton, prothesis type, fixation method were evaluated respectively by using Harris score.

RESULTSFifty-six patients were followed up from 13 to 36 months with an average of 21.6 months. Harris score was 83.51 ± 6.40, 5 cases got excellent results, 38 cases good and 13 cases moderate. Harris score of patients aged from 75 to 80 years old was 88.64 ± 2.35, 81.64 ± 6.40 in patients aged more than 80 years old, and had significant differences between two groups; Harris score in patients with type Evans I c was 83.64 ± 6.53, and 83.11 ± 6.08 in type Evans I d, while there was no significant differences between two groups. There was no obvious meaning in Harris score between patients with tension band (83.63 ± 6.15) and without tension band (82.41 ± 6.57). There was no significant meaning in Harris score between patients with normal distal fixation prosthesis (83.34 ± 6.43) and femoral moment reconstruction distal fixation prosthesis (83.92 ± 6.51). There was 1 patient occurred hip joint dislocation on the operative side and re-dislocation after manual reduction, then received open reduction. Two patients occurred femoral osteolysis without clinical symptoms, and treated conservative treatment.

CONCLUSIONArtificial joint replacement for unstable intertrochanteric fractures in elderly patients, hip joint function in patients aged more than 80 years old is worse, while there was no obvious market effect in fracture classification, whether to use tension band and type of distal fixation prosthesis, moreover, proximal femoral osteolysis should be focused on.

Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Hip ; Female ; Femur ; surgery ; Follow-Up Studies ; Fracture Fixation, Intramedullary ; Hip Fractures ; surgery ; Hip Joint ; surgery ; Hip Prosthesis ; Humans ; Male ; Treatment Outcome