Objective To investigate the effect of emodin on immune suppression function of regulatory T cells in a mouse model of CT26 colon cancer. Methods Twenty-four mice were divided into the negative control group, the emodin group and the tumor group. The populations of CD8+CD3+T cells, the T cells producing IFN-γand the CD4+CD25+Tregs secreting IL-10 in different mouse tissues were detected by flow cytometry. Levels of IFN-γ, TNF- β1 and IL-10 in serum were determined by ELISA. Results Emodin could significantly increase the percent of CD8+CD3+T cells in tumor (P < 0.05) and improve the ability of IFN-γ secretion in T cells from peripheral blood and lymph nodes (P < 0.05). Emodin could reduce the levels of IFN-γ, TNF-β1 and IL-10 in the serum (P < 0.01) and inhibit IL-10 secretion in CD4+CD25+ Tregs (P < 0.01). Conclusion Emodin possesses the antitumor effect by affecting the immunosuppressive function of Tregs cells.

Female ; Granulosa Cell Tumor ; Humans ; Ovarian Neoplasms ; Thyroid Neoplasms

Objective To propose a method for the determination of droxidopa concentration in human plasma by HPLC method for the study of the pharmacokinetics of droxidopa.Methods After a single oral dose of 200 mg droxidopa capsule was administered to 12 healthy Chinese male volunteers,we used perchloric acid to precipitate proteinum and then determined the droxidopa concentration in plasma by HPLC.The pharmacokinetic parameters of droxidopa were calculated by 3P87 software.Results The linear range was 0.025-2 ?g/ml.Pharmacokinetic parameters were: T1/2(108.50?30.78)min,AUC(185.74?26.41) ?g?ml-1?min-1,CL(1.08?0.08)ml/min,Tmax(99.90?10.05)min,Cmax(0.74?0.08)?g/ml.At 10 h after administration,droxidopa was eliminated from the blood almost completely.Conclusion The method we proposed is sensitive,reproducible,and easy to operate.Pharmacokinetics of droxidopa in vivo is fitted to two-compartment model.

MicroRNA (miRNA) negatively regulates gene expression at the post-transcriptional level.Studies find that the abnormal expression of miR-151-5p in various human tumors may play an important role in the development of human tumors,especially in the invasion and metastasis.Further studies of miR-151-5p contribute to a more in-depth understanding of tumor invasion and metastasis,which have potential value in tumor diagnosis,treatment and prognosis.

Objective To investigate the relationship between dexamethasone and brain derive neurotrophic factor gene in experimental bacterial meningitis. Methods To construct the models of bacterial meningitis in 3 weeks old rats(n=33),then 23 of them were administed antibiotic and antibiotic plus dexamethasone respectively. BDNF mRNA and TrkB mRNA in brain was detected by in situ hybridization methods,respectively. Results After administration antibiotics, the expression of BDNF mRNA and TrkB mRNA in brain tissue were less than that in brain after infection 5 d(P 0.05), the expression of TrkB mRNA was stronger than that in brain at 5 d after infection(P

OBJECTIVE To study the rate and the risk factors of hospital infection after hemopoietic stem cell transplantation and improve treatment strategy.METHODS The clinical data of 21 cases of hemopoietic stem cell transplantation were analyzed respectively in our hospital.RESULTS Hospital infection was found in 15 cases,the infection rate was 71.4%.Fifteen kinds of bacteria and 4 kinds of fungi were observed.The risk factors were aggressive operation,the abuse of glucocorticoid and antibiotics.CONCLUSIONS The patients have a high rate of hospital infection after hemopoietic stem cell transplantation and a poor prognosis because of hospital infection.To decrease the rate of hospital infection after hemopoietic stem cell transplantation,the whole environmental protection should be carried out except decreased aggressive operation and the correct use of glucocorticoid and antibiotics.

OBJECTIVE To evaluate the cleaning efficacy of the automatic cleaning machine and the risk factors to ensure the effect of disinfection and sterilization. METHODS Cleaning efficacy of the automatic cleaning machines was detected by STF cleaning test card.It was put in the first cabin of every automatic cleaning machine.And it was also tested for these factors in determining cleaning qualities such as enzyme concentration,water temperature and pieces of instruments washed. RESULTS The cleaning efficacy of the automatic cleaning machines was 98.9% in the continuous two years.The qualified rate was 98.6% for surgical instruments,99.4% for all instrument in clinical sections. CONCLUSIONS The machine is suitable for the cleaning of surgical instruments.It also raises working efficiency,cutting down the cost of repairs and maintenance,reducing the chances of injury and infections in nurses who performed manual cleaning precedures.The procedures of the STF cleaning test card in detecting the cleaning efficacy is simpler,safer,and suitable for clinical applications.

Objective To explore the puberty and height development in childern with congenital adrenal hyperplasia(CAH) due to 21-hydroxylase deficiency(21-OHD) with the simple virilizing(SV) form.Methods Patients of SV 21-OHD,diagnosed and treated in Tianjin Children's Hospital from Jan.1970 to Jan.2008,were treated with cortisone acetate or hydrocortisone after diagnosed,and blood investigations were performed as part of monitoring,and dosages were adjusted accordingly to obtain normal growth velocity and slow bone age(BA) development.Gonadotropin-releasing hormone agonist(Gn-RHa) was given after the appearance of central precocious puberty(CPP).Forty-one patients(18 females,23 males) had achieved final height before Dec.31st 2008,and their puberty and height development were analyzed in this longitudinal study by contrast the ages and statures of obtaining final height(FH),chronological age(CA) and BA of G2/B2 stage,duration from G2/B2 stage to obtain FH and stature development of different gender during this period and the influences of compliancy on the ages and statures of obtaining FH were contrasted.Results With regarding to the age of testicular volume ≥4 mL,78.26% boys were before 9 years old.As far as the age of breast development was concerned,38.89% girls were before 8 year old and 66.67% menarche occurred before 10 year old.The differences between the duration and stature development of the period from the state of G2/B2 to skeletal maturation of different gender were significant (Pa

Objective To analyze rate of and reasons for not undertaking insulin pump therapy in children with type 1 diabetes(T1DM) and explore potential countermeasures.Methods Two hundred and seventy-eight persons of T1DM,diagnosed in Tianjin Children′s Hospital from Jan.2000 to Dec.2008,were assigned to fill in a questionnaire on T1DM and insulin pump therapy.Reasons for different compliances were analyzed and strategies were explored.Results Eighty-five point twenty-five percent of the children(237 persons) undertook the therapy and 14.75%(41 persons) refused.In the group of younger than 3 years,58.33%(21 persons)accepted the therapy,while in the group of older than 3 years,89.26%(216 persons) undertook it,consequently there was statistically significant difference(?2=23.83,P