Adolescent ; Antigens, CD20 ; metabolism ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Male ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; diagnosis ; metabolism ; pathology ; Prognosis

OBJECTIVE To analyze risk factors in order to provide scientific gist in diagnosis and treatment of central venous catheter related sepsis(CRS) in patients with total parenteral nutrition(TPN). METHODS To make comparison of the 57 cases of CRS with 423 cases of non-CRS during 1998-2002.First,monovariable chi-square test and then non-condition Logistic regression analysis of the markedly different factors in SPSS10.0 were conducted. RESULTS The major risk factors might be infectious disease,duration of central venous catheter in,location of catheter, type of catheter and material of catheter,and serum protein

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.

OBJECTIVETo observe the short-term clinical efficacy of compound Xiatianwu combined with methotrexate (MTX) in treating rheumatoid arthritis.

METHODOne hundred and four patients with rheumatoid arthritis were randomly divided into two groups: 64 cases in the combined treatment group who was treated with compound Xiatianwu combined with MTX, and the remaining 40 cases in the control group which was only treated with MTX. The changes in ACR20, ACR50, ACR70 and laboratory indexes including anti-cyclic citrulline polypeptide, rheumatoid factor, erythrocyte sedimentation rate, high sensitivity creative protein were compared before and after treatment. Adverse reactions in the two groups were observed as well.

RESULTAfter being treated for 3 months, the ACR20 improvement rate reached 59.4% in the combined treatment group, higher than 35% in the control group, with significant statistical difference (P <0.05); The ACR50 improvement rate reached 32. 8% the treated group, also higher than 17.5% in the control group, with significant statistical difference (P <0.05). After treatment for three months, both groups showed remarkable improvement in anti-cyclic citrulline polypeptide, rheumatoid factor, erythrocyte sedimentation rate and high sensitivity creative protein compared with that before treatment, demonstrating statistical significance (P <0. 05). The combined treatment group displayed more significant improvement in erythrocyte sedimentation rate and high sensitivity creative protein as well as much less adverse reactions than the MTX group.

CONCLUSIONCompound Xiatianwu combined with MTX can effectively improve clinical symptoms of RA patients and laboratory indexes, and shows higher medication safety.

Adult ; Arthritis, Rheumatoid ; drug therapy ; Dose-Response Relationship, Drug ; Drug Therapy, Combination ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Male ; Methotrexate ; therapeutic use ; Middle Aged ; Treatment Outcome

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

To explore the antagonistic effect of gingerols against the inflammation induced by lectin from Pinellia ternata. In this study, ELISA method was used to determine the effect of different extracts from gingerols on the release of inflammatory factor TNF-α from macrophages induced by lectin from P. ternata. The fluorescence probe was used to determine the effect of gingerols on the changes in ROS of macrophages induced by lectin from P. ternata. The western-blot method was applied to study the effect of gingerols on the increase in expression of cell receptor interacting protein RIP3 in macrophages induced by lectin from P. ternata. The scanning electron microscope (SEM) was used to study the effect of gingerols on morphological changes in macrophages induced by lectin from P. ternata. According to the results, gingerols can significantly inhibit the release of inflammatory factor from macrophages induced by lectin from P. ternata, ROS overproduction and increase in RIP3 expression. SEM results showed that gingerols can inhibit the cytomorphosis and necrocytosis induced by lectin from P. ternata. Fresh ginger's detoxication may be related to gingerols' effects in inhibiing release of inflammatory factor, ROS overproduction and increase in RIP3 expression caused by macrophages induced by lectin from P. ternata, which are mainly inflammatory development.
Animals ; Catechols ; pharmacology ; Cells, Cultured ; Drug Antagonism ; Fatty Alcohols ; pharmacology ; Ginger ; chemistry ; Lectins ; toxicity ; Macrophages ; drug effects ; metabolism ; Male ; Mice ; Mice, Inbred ICR ; Pinellia ; chemistry ; toxicity ; Reactive Oxygen Species ; metabolism ; Receptor-Interacting Protein Serine-Threonine Kinases ; genetics ; metabolism ; Tumor Necrosis Factor-alpha ; genetics ; metabolism

Animals ; COS Cells ; Female ; Hepatitis B Core Antigens ; genetics ; Hepatitis B Surface Antigens ; genetics ; Hepatitis B Vaccines ; immunology ; Interleukin-12 ; genetics ; Mice ; Mice, Inbred BALB C ; Vaccines, DNA ; immunology

OBJECTIVETo establish a method for isolating and culturing mouse dental follicle cells and to study the phenotype characteristics of dental follicle cells.

METHODSMandibular first molars from 9 day old Balb/c mice were digested with 1% trypsin, subsequently, and the dental follicle was enucleated from the tooth germ and cultured. The shape and ultrastructural appearance of dental follicle cells were observed under phase-contrast microscope and scanning electron microscope (SEM). Immunocytochemistry was used to detect the expression of alkaline phosphatase (ALP), bone sialoprotein (BSP) and osteopontin (OPN).

RESULTSThree types of cells were isolated: some were cuboidal/polygonal; some were elongated, spindle-shaped, fibroblast-like cells; and a minor, third cell type was very thin and elongated. The cytoplasm of the first two cell types was filled with abundant granules. The cells were pleomorphism under SEM and had many filipodia and microvilli. According to whether there were filaments overlying the surface, the cells could be divided into two subtypes. Some but not all follicle cells expressed ALP, BSP and OPN.

CONCLUSIONThe cultured dental follicle cells consisted of several cell phenotypes and had the potential of differentiating into cementoblasts, periodontal ligament fibroblasts and osteoblasts.

Alkaline Phosphatase ; Animals ; Cell Culture Techniques ; Cell Line ; Cells, Cultured ; Dental Cementum ; Dental Sac ; Fibroblasts ; Integrin-Binding Sialoprotein ; Mice ; Mice, Inbred BALB C ; Molar ; Osteoblasts ; Osteopontin ; Periodontal Ligament ; Phenotype ; Tooth Germ

OBJECTIVETo study the expression of Runx2/Cbfa1 in the developing dentin and differentiating odontoblasts.

METHODSA postnatal mice teeth developing model was built histologically. Immunohistochemical technique was adopted to determine the expression of Runx2/Cbfa1 in the developing pulpo-dentinal complex in mice.

RESULTSRunx2/Cbfa1 was merely present in predentin in the exact and before the 11th day's postnatal stages. Meanwhile, it was positively located in odontoblasts and dental pulp cells in root region, but negatively in coral part after the 11th day's stages.

CONCLUSIONRunx2/Cbfa1 may play an important role in the deposing of tooth dentin and in the differentiating of odontoblasts and pulp cells.

Animals ; Cell Differentiation ; Core Binding Factor Alpha 1 Subunit ; Dental Pulp ; Dentin ; Mice ; Odontoblasts ; Tooth

Red in vivo recombination is a new kind of genetic engineering technique based on homologous recombination. In this work, plasmid pKD46 which expresses Red recombination proteins is transferred into Escherichia coli strain DH5?.The kanamycine resistant gene is generated by PCR by using primers with homology to hisDCB gene of E.coli chromosome. Thus, the hisDCB gene was replaced with kanamycine resistant gene by the plasmid recombination system, then the resistant gene was eliminated by a helper plasmid encoding the FLP recombinase. At last, a E.coli histidine auxotroph which is sensitive to kanamycine was got. The results indicate that Red in vivo recombination is a convenient method to construct auxotrophs.