Objective To investigate the clinical spectrum of respiratory viruses in infants and young children with acute lower respiratory infection(ALRI) in Chongqing area from 2003-2007.And to assess the clinical diagnostic value of virus detection in nasopharyngeal secretions(NPS) and serum viral antibody detection for ALRI.Methods Cases of 2 529 specimens of NPS in hospitalized children with ALRI from Apr.2003 to Oct.2007 were taken for detecting 7 common respiratory virus antigens by immunofluorescence assay including respiratory syncytial virus (RSV),adenovirus(ADV),influenza A(IA),influenza B (IB),parainfluenza virus1-3 (PIV1,PIV2,PIV3).Fifty-five thousand eight hundred and eighty-seven samples were tested for ADV-IgM by ELISA.Among those,45 159 cases were further tested for RSV-IgM by ELISA.Results Respiratory virus pathogens were detected in 778 samples out of 2 529(30.76%) including RSV positive in 668 samples (85.86%),PIV3 positive in 75 samples (9.64%),IA positive in 22 samples (2.57%),ADV positive in 15 samples ( 1.93%),only 1 sample ( 0.13%) positive for both PIV1 and RSV. And the positive rate of RSV-IgM was 0.9%-15.2%,and the positive rate for ADV-IgM was about 0.6%-10.6%.RSV infection occured mainly in winter and spring.Conclusions Respiratory virus is the most common pathogen in children with ALRI during the survey period in Chongqing area,especially for RSV infection.The pattern of RSV circulation varied every year with seasonality.It is suggest that this year is peak one for RSV infection from the monthly positive results,especially in Feburary(50%) in 2007.But the infection rate of PIV3,IA,ADV and PIV1 are lower,particularly IB and PIV2 infection have not been seen for the last 5 years.It is fast and accurate to detect RSV antigen and suit to clinical diagnosis by using immunofluorescence assay than other antibody detection.

Humans ; Medicine, Chinese Traditional ; methods

Autoimmune Diseases ; diagnosis ; immunology ; pathology ; surgery ; Humans ; Immunoglobulin G ; blood ; Magnetic Resonance Imaging ; Male ; Middle Aged ; Pancreatectomy ; Pancreatitis ; diagnosis ; immunology ; pathology ; surgery

To discuss the availability of evaluation on the dissolution studies of the multicomponents in traditional Chinese medicine, the in vitro dissolution of total composition of the tablet of rhizomes of Ligusticum chuanxiong components and its correlation with the in vivo were studied by the method of area under the absorbance-wavelength curve (AUAWC). Taken the tablet of rhizomes of Ligusticum chuanxiong components which is composed of sodium ferulate and ligustrazine hydrochloride as subject model, the dissolution tests were carried out with basket method. The plasma concentrations of tablets in different rats were determined by AUAWC at different interval times. The in vivo absorption percentage was calculated by Wagner-Nelson equation to evaluate the in vitro and in vivo correlation. According to the results, the cumulative dissolution in vitro of total composition of tablets of rhizomes of Ligusticum chuanxiong components at 60 min was 90.65% in water by AUAWC. The in vivo pharmacokinetics is fitted with an one-compartment model. The linear equation based on the cumulative dissolution rate (fr) and absorption percentage (fa) at 5, 10, 20, 30 and 60 min was fa = 0.819 7 fr+0.183 and the correlation coefficient was 0.959 5, which showed a good correlation between the in vitro dissolution and the in vivo absorption percentage. The method of AUAWC can be used accurately, feasibly and conveniently to evaluate the in vitro and in vivo correlation of total composition of tablets of rhizomes of Ligusticum chuanxiong components, which will provide better guidance to study the in vitro and in vivo correlation of sustained release preparation etc under complex system of traditional Chinese medicine in the future.
Animals ; Coumaric Acids ; chemistry ; Delayed-Action Preparations ; Drugs, Chinese Herbal ; chemistry ; pharmacokinetics ; Ligusticum ; chemistry ; Rats ; Rhizome ; chemistry ; Solubility ; Tablets

BACKGROUND: After local injection of Botulinum toxin type-A (BoTX-A), not only the function of the neuromuscular conjunction was affected, but also the changes occurred remote from the injected site. F-waves result from the back fire of the motoneuron activation, which may indirectly reflect the functional state of the motoneurons.OBJECTIVE: To evaluate the remote effect of local BoTX-A injection by F-wave test.DESIGN: Self-control study based on patients with movement disorders.SETTING: Neruologic clinic in a university hospital.PARTICIPANTS: Twenty-six patients with movement disorders not received previous local BoTX-A were selected from Neurological Clinic in Renmin Hospital of Wuhan University between September 2002 and July 2003, including 19 cases with hemificiospasm, 5 Meige syndrome and 2 torticollis spasmodicus.INTERVENTIONS: F- and M-waves of ulnar and tibial nerves were recorded before 1, 12 - 24 weeks after local injection of BoTX-A in 26 patients.MAIN OUTCOME MEASURES: The following parameters were analyzed:latency(ML) and amplitude (Mamp) of M-wave, minimal (Fmin) and average latency (Fave), amplitude of negative peak(Famp), duration (Fdur), persistence (Fpcr) and chronodispersion (Fchr) of F-wave.RESULTS: No definite F-response of ulnar nerve stimulation was obtained 1 week after injection in 3 HFS patients (5 nerves) . Fave prolonged significantly on ulnar and tibal nerve and Fdur increased significantly on ulnar nerve 1 week after injection, but there was no significant difference 12 - 24 weeks later, compared with before injection. No significant correlation of the altered F-wave parameters was found with the dosage of BoTX-A.CONCLUSION: Fdur and Fave could sensitively assess the remote effect,which correlates with distance away from the injected muscle, rather than the dosage of BoTX-A.

This paper reports a new type of thighbone and cervical bone fraction internal fixing aim di- rector,it has the advantage of entering pin accuratly,simple operating,short time for x-ray irradiating, little suffering to the patient and being economic.

OBJECTIVE To explore the effect of clofenotane (DDT) on epithelial-mesenchymal transition (EMT) and the relevant molecular mechanism in human colorectal cancer cells. METHODS Human colorectal cancer cells DLD1 were treated with DDT 0.01, 0.1, 1.0, 10.0 and 100.0 nmol·L-1 for 48 h. Then, the morphology of DLD1 cells was observed. mRNA levels of E-cadherin, N-cadherin, vimentin and Snail1 were detected by real-time PCR. Protein expression of STAT3 signaling pathway of proteins STAT3 and p-STAT3 was detected by Western blotting. STAT3 inhibitor WP1006 (5μmol · L-1) was added to determine its impact on DDT-induced alternation of STAT3/Snail1 signaling and EMT-related molecules. Protein expression of STAT3 and p-STAT3 was detected by Western blotting and mRNA levels of E-cadherin, N-cadherin, Vimentin and Snail1 were detected by real-time PCR. RESULTS DLD1 cell morphology was changed after exposure to DDT 0.01-100.0 nmol · L- 1. Meanwhile, real-time PCR showed that the mRNA level of E-cadherin was significantly decreased compared with normal cell control (P<0.01), which was 42.4±2.8%of that in the normal control group. The mRNA levels of N-cadherin, Vimentin and Snail1 were significantly increased (P<0.01), which were 1.91±0.1, 1.5±0.2 and 1.5±0.1 times that of the normal control group. DDT 0.1, 1.0 and 10.0 nmol · L-1 exposure induced up-regulation of STAT3 and p-STAT3 protein levels (P<0.01), which were 2.1 and 1.8 times that of the normal control group. The addition of STAT3 inhibitor WP1066 (5 μmol · L-1) prevented STAT3 from phosphorylation as well as the up-regulation of Snail1(P<0.01), which was (56.3 ± 0.9)% that of the DDT 1.0 nmol · L-1 treat?ment group. Compared with DDT treatment alone, the mRNA levels of EMT-related molecules were remarkably reversed by WP1066 (5 μmol · L- 1) co-treatment, increasing E-cadherin but decreasing N-cadherin and vimentin in DLD1 cells(P<0.01), which were 50.2±2.9%and 61.6±6.1%of those in the DDT 1.0 nmol · L- 1 treatment group, respectively. CONCLUSION DDT alters the expressions of EMT-related molecules including E-cadherin, N-cadherin and vimentin via STAT3/Snail1 signaling, thus promoting the EMT process in human colorectal cancer cells. This progress may be closely related to DDT-induced colorectal cancer development.

Objective To explore the apoptosis of alveolar epithelial cell(AEC)and the dynamic changes of Caspase-3 mRNA and Bax and Bcl-2 expression in premature rat with hyperoxia-induced chronic lung disease(CLD).Methods Sixty premature rats within 1 day after birth were randomly divided into 2 groups:hyperoxia group(n=30)and control group(n=30).Hyperoxia-induced premature rat CLD models were prepared,and situ nick end-labeling(TUNEL),reverse transcription polymerasechain reaction(RT-PCR)and immunohistochemical technique were used to determine apoptosis index(AI)of AEC and the expressions of Caspase-3 mRNA and Bax and Bcl-2 proteins in lung tissues at 1,3,7,14 and 21 d after birth.Results Compared with control group,in the hyperoxia group,on the third day after exposured to hyperoxia,the AI of AEC and the expressions of Caspase-3 mRNA and Bax began to increase,and the expression of Caspase-3 mRNA was kept at high level on 7-21 d.The expression of Bcl-2 began to decrease on 7 d,and significantly decreased on 7-21 d.AI of AEC was positively correlated with the expression of Caspase-3 mRNA and Bax,and negatively with the expression of Bcl-2.Conclusions Hyperoxia may induce the increased expression of Caspase-3 mRNA,which might result in the abnormal expression of Bax and Bcl-2 in lung tissues and their imbalance,which might be one of the underlying mechanisms of apoptosis of AEC in premature rats with CLD.

0.05).However,the level of PRG-1 protein in cerebral cortex of experimental group was significantly higher than that of control group at 7 d(t=2.347,P=0.041).Conclusion The up-regulated expression of PRG-1 in cerebral cortex may be associated with the recurrent neonatal seizure-induced brain damage.