Objective To evaluate the characteristics and safety of capsule endoscopy for elderly patients.Methods The clinical data of 376 patients who underwent capsule endoscopy between May 2002 and September 2007 were retrospectively analyzed,and patients were divided into geriatric group(≥60 years old,n=134)and control group(

Cardiovascular Diseases ; diagnosis ; therapy ; Humans ; RNA Interference

The fused gene (PTH-HSA) of parathyroid hormone (PTH) gene and Human Serum Albumin(HSA) gene was amplified without linker by Overlapping PCR technology. The spliced gene was clone into Pichia pastoris secretory vector pPIC9K. With the help of promoter AOX1 and mat ? signal peptide, the PTH-HSA gene was designed to secretory expression.Linearized by restriction enzyme SalI, The recombinant plasmid pPIC9K/PTH-HSA was transformed into Pichia pastoris KM71 by electroporation. The recombinant strains which were identified by G418 and PCR analysis were induced by methanol to express protein PTH-HSA. The target protein was expressed in fermentation supernatant. Western blot analysis of the fusion protein showed that the expressed fusion protein PTH-HSA had the antigenicity of HSA.adenylate cyclase assay proved that the fused protein exhibited the bioactivity to stimulate cAMP synthesis The specific activity of broth was about 318IU/ml.

Adult ; Air Pollution, Indoor ; adverse effects ; Benzene ; adverse effects ; Control Groups ; Female ; Humans ; Leukocyte Count ; Male ; Middle Aged ; Occupational Exposure ; adverse effects ; Paint

OBJECTIVE: To analyze the causes of the esophagogastric junction outlet obstruction (EGJOO) patients, to discuss the differences of the clinical manifestation and esophageal motility characteristics between the anatomic EGJOO (A-EGJOO) and functional EGJOO (F-EGJOO) subgroups, and to search the diagnostic values of the specific metrics for differentiating the subgroups of EGJOO patients. METHODS: For the current retrospective study, all the patients who underwent the esophageal high resonance manometry test were retrospectively analyzed from Jan 2012 to Oct 2018 in Peking University Third Hospital. The EGJOO patients were enrolled in the following research. The clinical characteristics, such as symptoms and causes of the patients were studied. Then the patients were divided into two subgroups as A-EGJOO subgroup and F-EGJOO subgroup. The clinical symptoms and the main manometry metrics were compared between these two subgroups. The significant different metrics between the two groups were selected to draw receiver operating characteristic (ROC) curves and the diagnostic values were analyzed in differentiating the A-EGJOO and F-EGJOO subgroups. RESULTS: The most common symptom of EGJOO was chest pain or chest discomfort (30.63%), then the dysphagia (29.73%), and acid regurgitation/heartburn (27.03%). Non-erosive reflux disease (36.04%) was the most popular cause for EGJOO, then the reflux esophagitis (17.12%). Besides the intra-EGJOO and extra-EGJOO lesions, the connective tissue disease (6.31%) and central nervous diseases (2.70%) were found to be the etiology of EGJOO. The causes of the rest 19 EGJOO were unknown. A-EGJOO patients presented significantly higher intra bolus pressure (IBP) than that of F-EGJOO [6.80 (5.20, 9.20) mmHg vs. 5.10 (3.10, 7.60) mmHg, P=0.016]. The area under curve of IBP was 0.637. When IBP≥5.15 mmHg, the sensitivity was 78.60% and specificity 50.70% to differentiate A- or F-EGJOO. CONCLUSION Chest pain or chest discomfort was the most common symptom in EGJOO patients. Besides the intraluminal structural disorders, the extra-luminal causes were found in EGJOO patients. A-EGJOO presented higher IBP than that of F-EGJOO patients. The cutoff value of IBP to differentiate A-EGJOO from EGJOO was 5.15 mmHg with sensitivity 78.06% and specificity 50.70%. However for the low area under curve, the diagnostic value of IBP was limited.
Deglutition Disorders ; Esophageal Motility Disorders/diagnosis* ; Esophagogastric Junction ; Humans ; Manometry ; Retrospective Studies

Objective To evaluate the effects of capsule endoscopy in the diagnosis and prognosis of small bowel tumors.Methods Three hundred and fifty-eight consecutive patients who underwent capsule endoscopy for suspected small bowel disease during May 2002 to Feb.2007 were examined.The final diagnosis was confirmed pathologically.Results Thirty-three(9.22%) out of 358 patients were identified as small bowel tumors[male 14/female 19,mean age(51?17)years].Of them,23(69.70%) patients had malignant tumors and ten(30.30%) had benign tumors.Obscure gastrointestinal bleeding were found in 26 cases,bleeding with abdominal pain in 2 cases,bleeding with diarrhea in 1 case,abdominal pain in 2 cases,abdominal pain with diarrhea in 1 case and vomiting in 1 case.All patients with benign tumors underwent surgery for their tumor.No further bleeding or abdominal pain after resection was found in all but one patient.Of the patients with malignant tumors,all expect two underwent surgery.Three patients accepted palliative surgery while eighteen patients received a curative resection.The locations of the tumor detected by capsule endoscopy were correlated well with the results of surgery.Conclusions Capsule endoscopy promises a higher diagnostic yield in small bowel tumors. h may improve the diagnosis of small bowel tumors and alter management thoroughly.

Effect of organic acids on the synthesis of 1,3 propanediol was studied.The adsorption of organic acids from glycerol fermentation liquor by ion-exchange resins was investigated.The results showed that organic acid and 1,3 propanediol production was in negative relationship.The static adsorption showed that ion-exchange resin 005 had the best adsorption abilities of the organic acids in the glycerol fermentation liquor.It was showed that the yield of 1,3propanediol increased by 166% after the extraction of organic acids from glycerol fermentation liquor and the convertion rate increased by 34%.

Objective To establish CFPAC-1 cell lines deficient in CDC25B2 by recombinant lentivirus, and to investigate the role of this gene. Methods After CFPAC-1 cells were transduced with recombinant lentivirus producing CDC25B2 siRNA, stably transduced cells with green fluorescent protein were selected by flow cytometer. The mRNA and protein expression of CDC25B2 was examined by RT-PCR and Western blot analysis. The effect of the lentivirus on the cell proliferation, cell cycle, clone-forming, migration and invasion ability was analyzed by MTr method, flow cytometer, plate clone-forming assay and Transwell chamber method respectively. Results CDC25B2 siRNA knocked down CDC25B2 expression in CFPAC-1 cells significantly. The silencing efficiency of siRNA transduction by recombinant lentivirns was very high. Proliferation, cloneforming, migration and invasion ability of human pancreatic cancer cell line CFPAC-I were significantly in-creased, while cell cycle was not affected. Conclusion CDC25 B2 plays an important role in cell proliferation, clone-forming, migration and invasion of pancreatic cancer. This research provides experimental evidences for targeting CDC25B2 in gene therapy against pancreatic cancer.

There are reports about the chemical compounds of Ciwujia herbs, but with no study report about the chemical material basis of Ciwujia injection (CWJI). In this study, LC-MS(n) and LC-Q-TOF-MS techniques were adopted for a qualitative analysis on phenylpropanoids in CWJI. The Ultmate XB-C18 column (4.6 mm x 250 mm, 5 microm) was adopted and eluted with the mobile phase of 0.5% formic acid-water and acetonitrile, with the flow rate at 0.8 mL x min(-1) and the column temperature at 20 degrees C. Based on the data of high-resolution and multi-stage MS, control products and literatures, altogether 54 phenylpropanoids were identified in Ciwujia Injection, including 34 phenylpropanoids, 16 ligans and 4 coumarins. Among them, 28 were reported for the first time in Ciwujia, and 14 compound structures were identified in comparison with the control products. The method established in this study could be used to simply and rapidly identify phenylpropanoids in CWJI. The findings provide scientific data for defining the chemical material basis of CWJI.
Chromatography, High Pressure Liquid ; methods ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; Eleutherococcus ; chemistry ; Mass Spectrometry ; methods ; Molecular Structure

The diabetic ulceration is not uncommon, and becomes refractory, as the skin in a diabetic patient is relatively thin as well as hypoesthetic and less sensitive to temperature. As there are already preexisting histological and cellular derangement in the skin, healing of the skin injury is difficult, thus resulting in an intractable ulceration. When diabetes is not controlled, the skin contents of sugar and advanced glycation end product accumulate, invoking cellular deformation and accumulation of matrix metalloproteinases (MMP), resulting in an imbalance between MMP and its inhibitors, malfunction of growth factors, and inflammatory reaction. These processes lead to obvious skin thinning, denaturation of connective tissues, thickening of vascular basal membrane, and neuropathy, etc. These pathological alterations could be recognized as "covert disorder" of skin in diabetic patients and may be underlying disorders in producing indolent diabetic ulcers.
Animals ; Diabetes Mellitus ; metabolism ; pathology ; Glycation End Products, Advanced ; metabolism ; Rats ; Skin ; metabolism ; pathology ; Skin Ulcer ; pathology ; Wound Healing