Rational use of antibiotics can delay the emergence of antimicrobial resistance, and antimicrobial resistance surveillance provides the basis for standardizing clinical rational use of antibiotics. Therefore, antimicrobial resistance surveillance network is of great importance, and its construction can improve the rational use of antibiotics.The construction of antimicrobial resistance surveillance network should emphasize the capacity building of clinical microbiology laboratory and enhance quality control of resistance data based on the standards put forth by Clinical and Laboratory Standards Institute ( CLSI) .

Acute Disease ; Electrocardiography ; Humans ; Myocardial Infarction ; chemically induced ; physiopathology ; Poisoning ; complications ; physiopathology

The authors first make an analysis of the problems in clinical nursing quality control, including maintaining conservative points of view, sticking to backward quality control criteria, ignoring patients feelings, neg lecting clinical practice, and letting quality inspection become a mere formality. Then they argue that nursing quality managers should update their points of view and make constant innovations, revise quality evaluation criteria and emphasize the practical results of patient care, pay great attention to the psychological needs of the patients, and improve nursing expertise so as to render nursing quality control more rational, standardized and scientific.

Carotid Body Tumor ; diagnosis ; therapy ; Humans

Autophagy is an important homeostatic cellular recycling mechanism responsible for degrading injured or dysfunctional cellular organelles and proteins in all living cells. Aging is a universal phenomenon characterized by progressive deterioration of cells and organs due to accumulation of macromolecular and organelle damage. Growing evidences indicate that the rate of autophagosome formation and maturation and the efficiency of autophagosome/lysosome fusion decline with age. Dysfunctional autophagy has also been observed in age-related diseases. Autophagy disruption resulted accumulation of mutated or misfolded proteins is the essential feature of neurodegenerative disorders. However, in cancers, fibroproliferative diseases or cardiovascular diseases, autophagy can play either a protective or destructive role in different types of disease, and even in different stages of the same disease. The review will discuss the cellular and molecular mechanisms of autophagy and its important role in the pathogenesis of aging and age-related diseases, and the ongoing drug discovery strategies for therapeutic intervention.
Aging ; Autophagy ; Drug Discovery ; Humans ; Lysosomes ; metabolism ; Neurodegenerative Diseases ; Phagosomes ; metabolism ; Protein Folding

Objective To study the effect of topical tacrolimus (FK506) on the survival of the xenogeneic transplanted hair follicles from human scalp to Wistar rats. Methods In our study, Wistar rats were used as recipients and human as donor. The black hair follicles of human scalp were harvested, and then the xenogeneic grafts were transplanted to white Wistar rats on the back. 20 couples of rats were divided in 2 groups: topical tacrolimus group (group A), and blank control group (group B). After operaton, we compared the survival time of hair follicles and their histologic outcomes in order to verify the practicability of xenogeneic transplantion of hair follicles, and the topical application of tacrolimus results.Results The mean survival time of group A was longer [(49. 9 ±7. 1) days] as compared to group B [(13. 1±1. 2) days]. The longest survival time was 65 days in group A and 14 days in group B, respectively. By comparison of the results we found that topical tacrolimus prolonged the survival time of the xenotransplanted hair follicles significantly and that tropical medication could not avoid rejection. Conclusions The immune privilege function dependent on the hair follicle anagen and axillary topical tacrolimus, can prolong the survival time of the xenogeneic transplanted hair follicles in rats significantly.

BACKGROUND: Delirium is an acute organic brain syndrome caused by various reasons, and it is common in elderly patients. Antipsychotics treatment is an important method to control delirium.OBJECTIVE: To observe the efficacy of new antipsychotic agent of olanzapine and the traditional antipsychotic agent of haloperidol in treating senile delirium.DESIGN: A randomized controlled observation. SETTING: Mental Health Center, the First Affiliated Hospital of Chongqing University of Medical Sciences.PARTICIPANTS: Totally 175 inpatients with senile delirium were selected from the First Affiliated Hospital of Chongqing University of Medical Sciences from September 2001 to September 2003, they were randomly divided into olanzapine treatment group (n=74), haloperidol treatment group (n=72) and a control group(n=29). There were 111 males (63.4%) and 64 females (36.6%). Delirium had occurred for a duration of 30 minutes to 17 days, with an average of (3.02±2.71) days. The enrolled patients were classified according to the etiological factors of delirium: metabolic (n=68), toxic (n=47), structural (n=25) and infectious (n=35).METHODS: Different treatments were used in different groups. Control group (n=29): The patients were only given somatic treatment aiming at delirium, and not any drug for central nervous system was used. Olanzapine group (n=74): Besides the somatic treatment aiming at delirium, the patients were given olanzapine (Zyprexa, produced by Eli Lilly and Company,5 mg/tablet) taken orally or sublingually (fasted patients), the initial dosage was 1.25-2.5 mg per day, and then adjusted to 1.25-20 mg per day. Haloperidol group (n=72): Besides the somatic treatment aiming at delirium, they were treated with intramuscular injection of haloperidol (2.5-10 mg per day). The effects were prospectively observed for 1 week.The scores were observed before enrollment and at 1-7 days respectively,the severity of mental disorder and amelioration were evaluated by the clinical global impression scale-severity of illness (CGI-SI) and global improvement item of clinical global impression scale (CGI-GI). The dosage and time of administration was taken as the dosage and time to take effect when the CGI-SI baseline scores decreased by more than 1 point.MAIN OUTCOME MEASURES: The severity of mental disorder and amelioration were observed.RESULTS: ① The scores of CGI-SI after treatment were significantly decreased in the olanzapine group, haloperidol group and control group, and there were significant differences (P ＜ 0.01). ② The rates of marked effect in the three groups were 82.4%, 87.5% and 31.0%, respectively, and those in the two treatment groups were significantly different from that in the control group (P ＜ 0.01). ③ Both olanzapine and haloperidol began to take effect at small dosages, and it was the fasted in the olanzapine group, followed by the haloperidol group, and slowest in the control group.CONCLUSION: Olanzapine and haloperidol have similar effects in treating senile delirium. However, olanzapine is faster to take effect than haloperidol.

TLR2 activity plays an important role in the pathogenesis of autoimmune diseases, tumor carcinogenesis and cardio-cerebrovascular diseases. To establish a TLR2 receptor-based cell screening model, NF-kappaB promoter-driven luciferase reporter plasmids were transfected into human embryonic kidney cells (HEK293) stably expressing human TLR2 and co-receptors CD14, TLR1 and TLR6. Single clones were then isolated and characterized. Using this screening system, a human TLR2-binding peptide C8 was obtained from the Ph.D.-7 Phage Display Peptide Library through biopanning and rapid analysis of selective interactive ligands (BRASIL). The binding characteristic of C8 with human TLR2 was evaluated by ELISA, flow cytometry and immunofluorescence. The NF-kappaB luciferase activity assay showed that C8 could activate the TLR2/TLR1 signaling pathway and induce the production of cytokines TNF-alpha and IL-6. In conclusion, the TLR2 receptor-based cell screening system is successfully established and a new TLR2-binding peptide is identified by using this system.

Objective: To investigate the effects of different extracts of Smilax china L on the activity of ovarian cancer cells. Methods:Solvent extraction method was used to extract the active ingredients of Smilax china L. , and CCK-8 assay method was ap-plied to detect the influence of different Smilax china L. extracts (0, 50, 100, 150 and 200μg·ml-1 ) on the survival rate of ovarian cancer cells including low invasiveness A2780 cells and high invasiveness HO-8910PM cells. At the same time, the status of the two kinds of ovarian cancer cells at different time points (24, 48 and 72 h) was observed. Results:The IC50 of N-butanol extracts (SCR-B) on HO-8910 and A2780 ovarian cancer cells was 47. 5 μg· ml-1 and 69. 2 μg· ml-1 , respectively, and that of ethyl acetate ex-tracts (SCR-E) on A2780 and HO-8910 cells was 147. 9 μg· ml-1 and 166. 0 μg· ml-1, respectively. Smilax china L. extracts had the inhibition against both A278 and HO-8910PM ovarian cells in a dose-and time-dependent manner. Conclusion:The inhibitory activity of SCR-B against ovarian cancer cells is stronger than that of SCR-E, and SCR-B has stronger inhibition against A2780 cells than against HO-8910 cells. SCR-B has better inhibition against ovarian cancer cells.