Afferent Pathways ; Animals ; Female ; Nerve Block ; Olfactory Bulb ; metabolism ; Parvalbumins ; metabolism ; Rats ; Rats, Wistar

Objective This study investigates the epithelial-mesenchymal transition effects exerted on human liver cancer cells HepG2 by THP-1 derived macrophages.The roles of tumor-associated macrophages (TAMs) on liver cancer progression and its mechanisms were explored.Methods HepG2 cells were cultured with THP-1 derived macrophages to mimic the microenvironment of liver cancer.After the culture treatment,morphological changes of the liver cancer cells were observed.Decreased E-cadherin expression is a hallmark of epithelial-mesenchymal transition (EMT),and the Ecadherin protein variations in the HepG2 cells were detected by immunofluorescence (IF) and Westernblot.FlowCytomix was carried out to screen the cytokines in the supernanants of THP-1 cells and THP-1 derived macrophages.Results After culture with macrophages,HepG2 cells revealed a morphological change.These cells lacked epithelial morphology and became a spindle-like mesenchymal cell phenotype.Additionally,the E-cadherin protein expression was reduced dramatically as measured by IF and Western-blot.IL-8 and IL-1β expression in the supernatants were increased 40 and 20 times,respectively,after THP-1 cells were activated to macrophages (P＜0.01).TNF-α expression was increased 8 times (P =0.056).Conclusion THP-1 derived macrophages could induce EMT effects on HepG2 cells,which may relate to the increased secretion of IL-1β,IL-8 and TNF-α.

This paper describes a patient security detection system developed with two dimensional bar codes, wireless communication and removal storage technique. Based on the system, nurses and correlative personnel check code wait operation patient to prevent the defaults. The tests show the system is effective. Its objectivity and currency are more scientific and sophisticated than current traditional method in domestic hospital.
Automatic Data Processing ; organization & administration ; Computer Communication Networks ; Humans ; Operating Room Information Systems ; organization & administration ; Patient Identification Systems ; methods ; Quality Assurance, Health Care ; methods ; Safety

Hemagglutinin (HA) contains a head domain with a high degree of variability and a relatively conserved stem region. HA is the major viral antigen on the surface of the influenza virus. To define the biologic activities of chimeric HA bearing different head domains and stem regions or their potential use, a HA chimeric gene containing the head domain of the H7 subtype virus and stem region of the H3 subtype virus was modified and expressed using a baculovirus expression vector. Then, the secreted protein was purified and its biologic activities characterized. Approximately 1.4 mg/mL cH7/3 HA could be obtained, and its molecular weight was ≈ 70 kD. The trimer form of cH7/3 protein had hemagglutination activity and could be recognized by specific antibodies. The method described here can be used for further studies on the screening of HA stem-reactive antibodies or the development of vaccines with conserved epitopes.
Antibodies, Viral ; immunology ; Baculoviridae ; genetics ; metabolism ; Gene Expression ; Genetic Vectors ; genetics ; metabolism ; Hemagglutination ; Hemagglutinin Glycoproteins, Influenza Virus ; genetics ; immunology ; Humans ; Influenza Vaccines ; genetics ; immunology ; Influenza, Human ; prevention & control ; virology

Objective:To choose the best vector for the expression of CS3 fimbriae. Methods: The CS3 operon was cloned into different plasmid vectors such as pUC19 and pTrc99A. The expression of CS3 was monitored by whole-cell ELISA and SDS-PAGE analysis. The assembly of CS3 fimbriae was detected with electron microscopy. Results:The expression level of CS3 fimbriae using plasmid pUC19 as carrying vector was the highest, and the insertion orientation of CS3 gene into the plasmid has a little effect on its expression level. The expression of CS3 fimbriae was confirmed by SDS-PAGE analysis and electron microscopy.Conclusions:The promotor of CS3 itself played the key role in the expression of CS3 fimbriae and the copy number of plasmid was the main factor to affect the expression level.

Objective　To explore the method of chemical synth esis of L-alanyl-L-glutamine dipeptide. Methods　 L-alanyl-L -glutamine dipeptide was prepared by condensation and ammoniation reaction of L -glutamine and 2-D-chloropropionyl chloride. The physico-chemical properties of this dipeptide were identified with melting point determination, amino acid analysis, elements analysis and MS and its purity was determined with HPLC. Results　This dipeptide was confirmed good in quality by physico-chem ical determination. Conclusion　Dipeptide synthetized by this me thod is simple, convenient and with good guality.

AIMTo study the effects and mechanism of naloxone on the febrile response in IL-1beta-induced fever rats.

METHODSThe fever model was established by intracerebroventricular injection of IL-1beta in rats. The effect of naloxone on the body temperature of feverrats was observed. The contents of cAMP in hypothalamus and AVP in VSA were detected.

RESULTSNaloxone alleviated IL-1beta-induced fever and the contents of cAMP in hypothalamus and AVP in VSA were correspondingly decreased (P < 0.01).

CONCLUSIONNaloxone could inhibit IL-1beta-induced fever in rats, and the mechanism might be due to inhibiting synthesis of cAMP in hypothalamus and promoting release of AVP in VSA.

Animals ; Arginine Vasopressin ; metabolism ; Cyclic AMP ; metabolism ; Fever ; metabolism ; Hypothalamus ; drug effects ; metabolism ; Male ; Naloxone ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Septum of Brain ; drug effects ; metabolism

BACKGROUND: Noninvasive monitoring of intra-abdominal pressure (IAP) by measuring abdominal wall tension (AWT) was effective and feasible in previous postmortem and animal studies. This study aimed to investigate the feasibility of the AWT method for noninvasively monitoring IAP in the intensive care unit (ICU). METHODS: In this prospective study, we observed patients with detained urethral catheters in the ICU of Shanghai Tenth People's Hospital between April 2011 and March 2013. The correlation between AWT and urinary bladder pressure (UBP) was analyzed by linear regression analysis. The effects of respiratory and body position on AWT were evaluated using the paired samples t test, whereas the effects of gender and body mass index (BMI) on baseline AWT (IAP<12 mmHg) were assessed using one-way analysis of variance. RESULTS: A total of 51 patients were studied. A significant linear correlation was observed between AWT and UBP (R=0.986, P<0.01); the regression equation was Y=–1.369+9.57X (P<0.01). There were significant differences among the different respiratory phases and body positions (P<0.01). However, gender and BMI had no significant effects on baseline AWT (P=0.457 and 0.313, respectively). CONCLUSIONS: There was a significant linear correlation between AWT and UBP and respiratory phase, whereas body position had significant effects on AWT but gender and BMI did not. Therefore, AWT could serve as a simple, rapid, accurate, and important method to monitor IAP in critical y il patients.

OBJECTIVETo investigate the association between the morphological features of biopsy-diagnosed high grade intraepithelial neoplasia in the gastric mucosa and the postoperative pathology.

METHODSFifty-one patients with biopsy-diagnosed high grade intraepithelial neoplasia in the gastric mucosa were retrospectively analyzed. Thirty-three patients underwent surgery. The morphology of lesions under endoscopy and histopathological findings of the surgical specimens were investigated.

RESULTSOf the 51 patients, 43 had superficial lesions similar to early gastric cancer under endoscopy, 8 were similar to advanced carcinoma. In the 33 surgical cases, high grade intraepithelial neoplasia of gastric mucosa was confirmed on postoperative pathological examination in 13 (39.4%) patients, adenocarcinoma was identified in the remaining 20 patients (60.6%), including 14 early gastric cancers and 6 advanced carcinomas. Thirteen cases with high grade intraepithelial neoplasia confirmed postoperatively were superficial elevated or flat lesions less than 20 mm.

CONCLUSIONSPatients with biopsy-diagnosed high grade intraepithelial neoplasia in the gastric mucosa have a high risk of cancer. Thus aggressive follow-up and appropriate surgical interventions are recommended to avoid misdiagnosis.

Adult ; Aged ; Aged, 80 and over ; Biopsy ; Female ; Gastric Mucosa ; pathology ; Gastroscopy ; Humans ; Male ; Middle Aged ; Prostatic Intraepithelial Neoplasia ; pathology ; Stomach Neoplasms ; pathology

Opioid receptor, is classified into three subtypes, mu, kappa and delta, with the mu-type receptor plays important roles in opioid analgesia and opioid addiction. The cDNA encoding mu-type receptor was obtained by RT-PCR from human brain RNA and was cloned into pcDNA3.1(+). The resultant recombinant plasmid pcDNAMORs were transfected into CHO cells by liposome. After PCR identification, the positive clone were treated with agonist and antiagonist were tested for their competence of signal transduction. CHO cells that contained mu-opioid receptor in the expression vector pcDNA3.1(+) acquired naloxone-blockable high-affinity specific binding of morphine and DAMGO. The concentration of cAMP in CHO cells transfected with pcDNAMOR was reduced after binding to morphine and DAMGO, and increased after binding naloxone. These results indicate that the mu-type receptor expreesd on the CHO cell has similar biological property as the nature receptor. The availability of these specific cell lines will facilitate the drug development and promote our understanding the mechanism underlying opiate addiction.
Animals ; Brain Chemistry ; CHO Cells ; Cricetinae ; Cricetulus ; DNA, Complementary ; biosynthesis ; genetics ; Humans ; Receptors, Opioid, mu ; biosynthesis ; genetics ; Transfection