Objective To establish a national antibacterial resistance surveillance network and explore the epidemiology of bacterial resistance in China. Methods The minimal inhibitory concentration (MIC) was determined by National Committee for Clinical Laboratory Standards (NCCLS) standard agar double dilution method. The susceptibility and resistance rates of drugs were calculated according to the criteria in guidelines of NCCLS (2004). Results According to the previous protocol, a total of 4 075 pathogenic strains isolated from 17 hospitals located at 15 different cities from October 1, 2004 to September 30, 2005 in China were collected and the MICs were detected. Gram-negative bacilli were 3 150 strains ( 77.3%). Enterobacteriaceae Were highly susceptible to Carbapenems. In addition, Moxalactam, Piperacillin/Tazobactam, Cefoperazone/Sulbactam and Cefepime were also exhibited good antibacterial activities against Enterobacteriaceae,the resistance rates of them were less than 10 %. The resistance rates of nonfermentative Gramnegative bacilli, such as Pseudomonas aeruginosa and Acinetobacter baumanii, to Imipenem were 10. 6 % and 10.4 % , respectively. Cefoperazone/Sulbactam, Piperacillin/Tazobactam and Fluoroquinolones also showed good activity against nonfermentative Gram-negative bacilli.Conclusions The drug resistance rates of Escherichia coli and Acinetobacter baumanii increase obviously. Fluoroquinolones and Aminoglycosides are not very effective against Enterobacteriaceae,which should be paid more attention.

During aging, cardiac contractile response to β-AR stimulation is decreased in humans and animal models. Recent studies demonstrate that the positive inotropic effects of both β1-AR and β2-AR stimulation are significantly decreased with aging.This is accompanied by decreases in both β-AR subtype densities and a reduction in membrane adenylyl cyclase activity. However,neither G protein-coupled receptor kinases (GRKs) nor inhibitory G proteins (Gi) appears to contribute to the age-associated reduction in the β-AR modulation of contraction. Thus, while both aging and chronic heart failure exhibit a diminution in cardiac β-AR responsiveness, only heart failure exhibits increased GRK-mediated desensitization ofβ-Ars and an upregulation of Gi proteins.

Objective To investigate the relationship between gliosis, synaptic reorganization and the mechanism of chronic temporal lobe epilepsy induced by kainic acid. Methods The mossy fibers sprouting, synaptic reorganization and gliosis were observed by Neo-Timm staining and immunohistochemical staining respectively. Results The injected (ipslateral) side was injured predominantly in the CA 3 subfield and hilus, whereas the CA 1 subfield was injured mildlyThe contralateral side showed pathological changes mainly in the CA 1 subfield and hilus, and moderately in the CA 3 subfieldThe longer the rats survived, the more obvious changes were observed in the hippocampuses. Conclusion The injection of kainic acid in hippocampus can cause neuronal loss, reactive gliosis and plasticity of neurons, probably form the abnormal neuronal discharge circuit, finally induce the seizures

Objective To detect characteristics and the pathogenesis of rhodopsin (RHO) gene mutation in an inbreeding family with autosomal recessive retinitis pigmentosa (ARRP). Methods Peripheral venous blood 5-8 ml was abstracted from 8 members in the inbreeding ARRP family and 10 control individuals. DNA gene group was picked. Extron 1-5 of RHO gene was amplified by polymerase chain reaction (PCR),and the mutation of RHO gene was screened by direct DNA sequence measurement. Results The Gln-344-Arg mutation in the RHO gene was detected in 3 patients with ARRP and homozygotes of the mutation in 3 patients were found. Heterozygous of the mutation was detected in the parent of patients and 1 healthy family member. No mutation of RHO gene was found in 2 healthy family members and 10 control individuals. Conclusions The Gln-344-Arg mutation in the RHO gene may be the pathogenic factor of the ARRP family; the frequency of the mutation of RHO gene may increase in the inbreeding ARRP family.

Female ; Hamartoma ; Humans ; Infant, Newborn ; Mouth Diseases ; Palate, Soft

Cause of Death ; Female ; Hospital Mortality ; Hospitalization ; statistics & numerical data ; Humans ; Infant, Newborn ; Inpatients ; statistics & numerical data ; Male

OBJECTIVE: To investigate the influence of tripterygium glucoside tablet on the pharmacokinetics of atorvastatin in rats. METHODS: Twelve rats were equally randomized to two groups (six rats in each group), including the atorvastatin-only group (A) and the tripterygium glucoside tablet and atorvastatin group (B). Animals in group A were administered according the oral dose of 2 mg·kg-1; and animals in group B were administered at an oral dose of atorvastatin (2 mg·kg-1)and tripterygium glucoside tablet (2 mg·kg-1). Blood samples were collected into a heparinized tube via the oculi chorioideae vein at different time points after drug administration, and the plasma concentration of atorvastatin were determined using HPLC-UV. Finally, the pharmacokinetic profiles of atorvastatin were calculated and compared. RESULTS: Compared with the atorvastatin-only group(A), the pharmacokinetic parameters of the tripterygium glucoside tablet and atorvastatin group(B) have changed greatly. ρmax of atorvastatin increased from (4.77±0.64) to (7.79±0.61) mg·L-1, and AUC0-t increased from (12.82± 3.50) to (27.39±5.76) mg·h·L-1, at the same time, tmax was extended from (0.25±0.03) to (0.52±0.07) h, t1/2 was prolonged from (2.39±0.19) to (5.09±1.35) h, MRT was extended from (2.93±0.23) to (4.36±0.44)h. It indicates that the metabolism of atorvastatin may be suppressed. CONCLUSION: The RESULTS indicate that tripterygium glucoside tablet could influence the pharmacokinetics of atorvastatin when atorvastatin and tripterygium glucoside tablet are used concomitantly. This study could be used for clinical medication guidance of tripterygium glucoside tablet and atorvastatin to avoid the occurrence of adverse reactions.

Catechol-type siderophores secreted by a strain of soil bacteria in three different medium were assayed by two high-resolution TLC.The results showed different medium had a significant effect on the secretion of catechol-type siderophores,and in three different medium strain S1 produced different catechol-type siderophores.The effect of Al~(3+) on Catechol-type siderophores by S1 were also assayed.The results showed Al~(3+)had a significant stimulation on the secretion of catechol-type siderophores.Moreover,Al~(3+)could to some extent counteract the repression of Fe~(2+)on siderophores production.In KMB medium four catechol-type siderophores were identified and all ones except for 2,3-dihydroxybenzoic acid(2,3-DHBA) had high affinity for Al~(3+).

Objective To study pathogensand diagnostic value of beta2-microglobulin(?2-MG) in cerebrospinal fluid(CSF) in children with aseptic meningitis(AM).Methods Polymerase chain reaction (PCR) or reverse transcription-PCR (RT-PCR) assay,enzyme linked immunosorbent assay (ELISA) and passive particle agglutination were employed respectively to detect herpes simplex virus type-1(HSV-1) DNA,enterovirus(EV) RNA in CSF and the specific antibodies of HSV-1 and mycoplasma pneumonia(MP) in blood and CSF from 80 children with AM (AM group) and 20 cases of complete remission acute leukaemia(control group).Children with AM were divided into the EV meningitis group,HSV-1 meningitis group and MP meningitis group according to respective diagnostic criteria.The levels of ?2-MG in CSF from all groups were detected by radio immunoassay.SPSS 13.0 software was used to analyze the data.Results The infection rate of EV,HSV-1 and MP were 52.5%,11.25%and 5.0%,respectively in children with AM.The infection rate of EV was highest.The sensitivity of PCR was higher than ELISA.There could be false negative PCR results in bloody CSF specimens with HSV-1 DNA.The levels of ?2-MG in CSF was significantly higher in children with AM than that in control group(P

Animals ; Blood Glucose ; Diet, High-Fat ; Ghrelin ; blood ; Lipids ; blood ; Physical Conditioning, Animal ; Rats