Objective To investigate the characteristics of memory impairment in patients with ischemic cerebrovascular diseases(ICVD)for further understanding in the cognitive impairment at early stage.Methods Forty-six ICVD patients aged 49 to 80 years old and forty-six matched volunteers,all from the same hospital during Sep 2005 to Feb 2006,were enrolled.Mini-mental state examination(MMSE),clinical memory scale(CMS),Fuld object-memory evaluation(FOM)and rapid verbal retrieve(RVR)were used to evaluate the cognitive and memory function.Results The ICVD patients had lower scores in every memory function than the controls(P

Objective: To explore the associations of Hand-Foot-Mouth disease (HFM) among children of different age groups in kindergartens, and to provide scientific evidence for HFM prevention and control. Methods: Cluster sampling was used to select 9 912 children from 40 kindergartens. The major caregivers of children were invited to participate into the study and fulfill a self-administered questionnaire that consisted of general background, hand washing and the history of HFM among children in the recent 1 year. Chi-square and binary logistic regression were applied,to analyze the influencing factors of HFM among children of different age groups. Results: In the 2 year-old-group, children who were male (OR=1.76, 95%CI=1.24-2.50), had the major caregiver with high school educational background or below (OR=1.54, 95%CI=1.06-2.24), had family income more than 100 000 yuan or more per year(OR=1.49, 95%CI=1.01-2.20), children whose major caregiver seldom wash hands immediately after coming home(OR=2.10, 95%CI=1.05-4.19)，and 3-5 times per week(OR=2.07, 95%CI=1.26-3.41) were more likely to have HFM. In the 3 year-old-group, the more time children spent in the outdoors, the less likely they got HFM(3-5 times per week: OR=0.58, 95%CI=0.43-0.81; ≥6 times per week: OR=0.45, 95%CI=0.29-0.70). Children whose major caregiver did not use soap were more likely to have HFM(OR=1.67, 95%CI=1.11-2.49). In the 4 year-old-group, children who occasionally took toys when going out were less likely to get HFM (vs always, OR=0.57, 95%CI=0.38-0.88). No significant factors were found in the 5 year-old-group. Conclusion The behaviors and activities of major caregivers and children could influence the HFM incidence.To prevent HFM, it was advised that the major caregivers should wash hands immediately after coming home, and develop the habit of using soap for handwashing together with children at the earlier age, and encourage children to take more outside-door activities according to the age characteristics. Attention should be paid to avoid contaminating takeout snacks, and to clean the takeout toys timely.

Objective To compare the serum peptidome spectrum between nephrotic syndrome patients and normal controls, and to search for their variations. Methods The serum peptide profiling was determined by ClinProt magnetic bead enrichment and matrix assisted laser desorption ionisation time-of-flight mass spectrometry (MALDI-TOF MS) in 17 mesangial proliferative glomerulonephritis (MsPGN) patients, 12 minimal change nephrotic syndrome (MCNS) patients, 10 membranous nephropathy (MN) patients, 10 focal segmental glomerulosclerosis (FSGS) patients, and 10 healthy volunteers. Results 5 differentially expressed polypeptides were screened out between MsPGN and normal controls (15.28±7.61, P＜0.01). 7 differentially expressed polypeptides were screened out between MCNS and normal controls (2.16±1.59, P＜0.01). 6 differential expressed polypeptides were screened out between MN and normal controls (35.48±13.71, P＜0.01). 5 differential expressed polypeptides were screened out between FSGS and normal controls (18.06±8.07, P＜0.05). The statistical significance was set at P＜0.05. A Genetic Algorithm was used to set up the classification model between patients and normal controls. The model separated MsPGN, MCNS, MN and FSGS group from normal controls with a cross validation of 96.18%, 100%, 98.53% and 94.12%, respectively. The recognition capabilities were 100%. Conclusions The study established the serum peptidome spectrum for nephrotic syndrome by proteomic technology, and provided a new viewpoint to better understand the pathogenesis of nephrotic syndrome.

OBJECTIVETo investigate the effects of cyclosporine A (CsA), a powerful inhibitor of mitochondrial permeability transition pore (MPTP), on pneumocyte apoptosis, the release of cytochrome C and the activity of caspase-3 after lung ischemia/reperfusion, and explore the mechanisms.

METHODSSingle lung in situ ischemia/reperfusion animal model was used. 30 SD rats were randomly divided into three groups (n = 10): sham (S) group, ischemia/reperfusion (I/R) group and cyclosporine A (CsA) group. Apoptosis of pneumocyte was assessed by TUNEL method, cytochrome C (CytC) in cytoplasm was detected by immunohistochemistry techniques, and the activity of caspase-3 was measured with spectrophotometer.

RESULTSThe content of CytC in cytoplasm, the activity of caspase-3, and the value of apoptosis index (AI) in ischemia/reperfusion group were evidently higher than that in S group (P < 0.01). CsA suppressed apoptosis as well as CytC release and caspase-3 activity (P < 0.01).

CONCLUSIONCsA can prevent the release of cytochrome C, block the apoptosis of pneumocyte accordingly maybe by closing the MPTP.

Alveolar Epithelial Cells ; cytology ; drug effects ; Animals ; Apoptosis ; drug effects ; Caspase 3 ; metabolism ; Cyclosporine ; pharmacology ; Cytochromes c ; metabolism ; Lung ; blood supply ; pathology ; Male ; Rats ; Rats, Sprague-Dawley ; Reperfusion Injury ; metabolism ; pathology

Objective: To analyze the features of Norovirus outbreaks in schools and kindergartens and the associated factors in Chengdu, 2017, and to provide the scientific basis for Norovious outbreaks prevention and control. Methods: A total of 75 schools and kindergartens in Chengdu of 2017 participated in the study about Norovirus outbreaks. ANOVA and binary Logistic regression models were used to analyze the influencing factors and duration of Norovirus outbreaks. Results: Overall 710 cases were included. There was an average of 9.47 cases and 27.52 hours for each outbreak,decreasing by 1.06 cases and 10.56 hours compared with those of 2016. Most outbreaks happened in kindergartens and in the firstlevel economy regions from January to March, with GII type as the main outbreak. Compared with the first case of vomiting at home, vomiting in public area (OR=11.76, 95%CI=1.63-84.69) was much more serious, and compared with the active report of school/ community, being informed of the outbreak passively (OR=4.09，95%CI=1.04-16.03) was positively associated with outbreak severity. Conclusion To prevent Norovirus infection, specific development and training of dealing with vomiting and feces should be introduced, and measures to increase the ability to surveil and report Norovirus outbreaks should be enhanced.

Objective To study the value of DSA for hepatic vascular anatomy,and to evaluate the efficacy of portal vein occlusion in rabbits with hepatic VX2 tumor.Methods Twenty New Zealand white rabbits were randomly divided into two groups with 10 in each group,including test group A and positive control group B of ham operation.For the test group A,portal branch ligation(PBL)was performed for the left external branch after 3 weeks of the tumor implantation to the left external lobe.Two weeks later,the DSA of hepatic artery and portal vein were performed in all of the rabbits.Results The total displaying effectiveness of the branches of hepatic artery by DSA was better than that by vascular perfusion.There was hypovascular blood supply to hepatic artery implantation of the tumor in the test group A,comparing with that of the group B.Conclusion DSA can clearly display spacial details of the hepatic vascular anatomy in rabbits,and play an important role in post-procedual evaluation of the portal vein occlusion in rabbits.

OBJECTIVETo detect serum hepatoma-specific datura stramonium lectin-tightly binding gamma-glutamyl transferase (DSA-GGT) in patients with primary hepatic cancer (PHC) by avidin-biotin ELISA method which was established in our laboratory, and carry on a study of its clinical application.

METHODSTo detect serum DSA-GGT in 45 healthy control subjects, 58 PHC patients and 203 non-PHC patients (including 36 patients with other tumors and 167 patients with benign liver diseases) with the method was established; meanwhile, AFP was detected by ELISA method.

RESULTS38 individuals were DSA-GGT positive in 58 PHC patients, the sensitivity was 65.5%. 18 individuals were DSA-GGT positive in 203 patients without PHC, the specificity was 91.1%. The sensitivity and specificity of AFP in diagnosis of PHC patients was 69.0% and 90.6%, respectively. The sensitivity and specificity of combination of DSA-GGT and AFP was 93.1% and 85.7%, respectively. The average intra-CV and inter-CV of DSA-GGT ELISA was 8.9% and 11.5%, respectively.

CONCLUSIONThe sensitivity and specificity of DSA-GGT ELISA method established in our lab is similar with that of AFP assay and the accuracy is good. Combination of DSA-GGT and AFP may improve the diagnostic sensitivity. The method should be potentially as a new way to improve diagnosis of PHC.

Adult ; Avidin ; Biotin ; Carcinoma, Hepatocellular ; blood ; diagnosis ; enzymology ; Enzyme-Linked Immunosorbent Assay ; methods ; Female ; Humans ; Liver Neoplasms ; blood ; diagnosis ; enzymology ; Male ; Middle Aged ; Sensitivity and Specificity ; Young Adult ; alpha-Fetoproteins ; analysis ; gamma-Glutamyltransferase ; blood

OBJECTIVETo investigate the intervention and mechanism of ambroxol combined with low-dose heparin on oxidative stress, TNF-alpha and IL-1beta in rabbits with acute lung injury (ALI).

METHODSTwenty-four healthy Japanese rabbits were randomly divided into three groups: (1) Normal saline control group (NC), (2) Oleic acid injury group (OA), (3) Ambroxol + low-dose heparin therapy group (AH). After the success of ALI model, AH group was injected ambroxol + low-dose heparin, while the NC group and OA group were injected the same dose of normal saline by the same method. Arterial oxygen tension (PaO2), tumor necrosis factor-alpha (TNF-alpha) and interleukin-1beta (IL-1beta) at different time points were determined. The pathological manifestation of both side lungs was observed at the end of expeiment. The activity of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), xanthine oxidase (XO) and the content of malondialdehyde (MDA) in bronchoalveolar lavage fluid (BALF) and lung tissue homogenate were tested. The apoptosis index was detected. The lung wet/dry (W/D) ratio was calculated. The pathological changes in lung tissue were observed by light microscopy, and the ultrastructural changes of lung tissue were observed by electron microscopy.

RESULTS(1) The instructive injury induced by ALI observed under electron microscope and light microscope and W/D was decreased significantly in AH group. (2) PaO2 was improved significantly in AH group, compared with that in OA group (P < 0.01). (3) The activity of GSH-Px and SOD in AH group increased significantly (P < 0.01 or P < 0.05) but the activity of XO and the content of MDA decreased significantly (P < 0.01), compared with those in OA group. (4) Except the content of IL-1beta in serum before treatment, the content of IL-1beta and TNF-alpha in serum, BALF, lung tissue homogenate of OA group increased significantly (P < 0.01), and those were obviously improved in AH group. (5) Apoptosis index (AI) in AH group decreased significantly (P < 0.01) compared with that in OA group.

CONCLUSIONIn ALI induced by OA, IL-1beta and TNF-alpha increases significantly and involved in the occurrence and development of ALI. Ambroxol combined with low-dose heparin can reduce lung cells oxidative stress to inhibit the release of IL-1beta and TNF-alpha, which play a role in the treatment of ALI.

Acute Lung Injury ; chemically induced ; drug therapy ; metabolism ; Ambroxol ; therapeutic use ; Animals ; Drug Therapy, Combination ; Female ; Heparin ; administration & dosage ; Interleukin-1beta ; metabolism ; Male ; Oleic Acids ; Oxidative Stress ; drug effects ; Rabbits ; Tumor Necrosis Factor-alpha ; metabolism

OBJECTIVETo investigate the protective effects and mechanism of SP600125-specificity inhibitor of c-Jun N-terminal kinase (JNK)on lung ischemia /reperfusion injury in rats.

METHODSThe unilateral lung ischemia/reperfusion model was replicated in vivo. Rats were randomly divided into three groups (n = 10): control group, ischemia/reperfusion group ( I/R group) and ischemia/reperfusion + SP600125 group (SP600125 group). The lung tissues sampled at the end of each experiment were assayed for wet/dry weight ratio (W/D),the injured alveoli rate (IAR), the expression of phosphorylation JNK (p-JNK) and JNK protein were detected by Western blot, the expression of Bcl-2, Bax, Caspase3 protein were detected by immunocytochemistry techniques, the pneumocyte apoptosis index (AI) was detected by terminal deoxynucleotidyl transferase mediated dUTP nick end abeling(TUNEL), the ultrastructure changes were observed under electron microscope.

RESULTSCompared to I/R group, the expression of p-JNK, Bcl-2, Bax and caspase-3 protein were markedly decreased (all P < 0.01), the expression of Bcl-2 protein and the ratio of Bcl-2/Bax were markedly increased in SP600125 group(all P < 0.01). The value of AI, W/D, IAR showed significantly lower than those in I/R group (all P <0.01). Meanwhile, light morphological and ultrastructure injury were found in SP600125 group.

CONCLUSIONSP600125 can suppress JNK signal pathway, up-regulate the ratio of Bcl-2/Bax to inhibit Caspase-3 dependent apoptosis, so that it protects lung tissue from ischemia/reperfusion injury.

Animals ; Anthracenes ; pharmacology ; Apoptosis ; drug effects ; Caspase 3 ; metabolism ; Lung ; blood supply ; metabolism ; pathology ; MAP Kinase Signaling System ; Phosphorylation ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Rats ; Rats, Wistar ; Reperfusion Injury ; metabolism ; pathology ; bcl-2-Associated X Protein ; metabolism

The aim of the present study is to investigate the effects of Panax notoginseng saponins (PNS) on pneumocyte apoptosis and apoptosis-related protein, as well as c-Jun N-terminal kinase (JNK) in lung ischemia/reperfusion (I/R) injury. Thirty Wistar rats were randomly divided into control group, I/R group and PNS group. The unilateral lung I/R model was replicated by obstruction of left lung hilus for 30 min and reperfusion for 120 min in vivo. The rats in PNS group were given intraperitoneal injection of PNS at 60 min before ischemia and 10 min before reperfusion. Some lung tissues sampled at the end of the experiment were assayed for wet/dry weight ratio (W/T). The expressions of phosphorylated JNK (p-JNK) and JNK protein were detected by Western blot. The expressions of Bcl-2, Bax and Caspase-3 protein were detected by immunocytochemistry techniques. The pneumocyte apoptotic index (AI) was detected by terminal deoxynuleotidy1 transferase mediated dUTP nick end labeling (TUNEL). The morphological and ultrastructure changes were observed under light microscope and electron microscope, and the injured alveolus rate (IAR) was counted as well. The results showed that compared to control group, I/R group showed increased expressions of p-JNK, Bcl-2, Bax and Caspase-3 protein (all P < 0.01), decreased ratio of Bcl-2/Bax (P < 0.05), and increased values of AI, W/T and IAR (all P < 0.01). Moreover, light microscope and electron microscope showed serious morphological and ultrastructure injury in I/R group. Compared to I/R group, PNS group showed markedly decreased expressions of p-JNK, Bax and Caspase-3 protein (all P < 0.01), increased expression of Bcl-2 protein and ratio of Bcl-2/Bax (both P < 0.01), and lower values of AI, W/T and IAR (all P < 0.01). Meanwhile, light morphological and ultrastructure injury was found to be alleviated in PNS group. These results suggest that PNS can protect lung tissue from I/R injury, and the mechanism may correlate with suppressing JNK signal pathway, up-regulating the ratio of Bcl-2/Bax which results in inhibition of Caspase-3 dependent apoptosis.
Alveolar Epithelial Cells ; drug effects ; Animals ; Apoptosis ; drug effects ; Female ; Ischemia ; physiopathology ; JNK Mitogen-Activated Protein Kinases ; metabolism ; Lung ; blood supply ; metabolism ; pathology ; Male ; Panax notoginseng ; chemistry ; Rats ; Rats, Wistar ; Reperfusion Injury ; prevention & control ; Saponins ; isolation & purification ; pharmacology ; Signal Transduction ; drug effects