[Study on phenotypic and genotypic characterization of clinical multidrug-resistant Escherichia coli isolates].

Objective: To study the mechanisms on drug susceptibility and resistance of clinically multidrug-resistant Escherichia coli isolates, to provide information on related treatment.

Methods: The susceptibility of E. coli strains that isolated from different kinds of samples in the last 3 years on drugs was analyzed by agar dilution test, with strains that exhibiting resistances to cefotaxime, ciprofloxacin and amikacin simultaneously collected for further analysis.

[The protective role of adiponectin in Con A-induced mouse liver injury].

Objective: To evaluate the role of adiponectin in regulating tumor necrosis factor alpha (TNF alpha) production and preventing fulminant autoimmunological damage of hepatocytes following concanavalin A (Con A) injection into mice.

Methods: Three days after recombinant plasmids pAA-neo-mAd were injected into the mice via the tail veins, Con A was injected into the mice. Mice transfected with empty pAA-neo vector served as controls.

Present status of serum lipid levels in Beijing professional populations and its trend of changes over 15 years--a collaborative study of seven research and clinical laboratories in Beijing.

Background: China's economy has been growing rapidly since 1980, which may have affected blood lipid levels. We carried out a study on serum lipid levels and prevalence of lipid abnormalities in Beijing professional populations in 2001-2002 and assessed the changing trends of lipid levels by comparing the results with that of a similar study in 1984-1986.

Methods: The study population included 31,068 government employees, medical and educational workers and scientific research personnel (male/female 6:4).