Objective To determine the effect of suppressing TrkA expression on pancreatic cancer chemosensitivity to gemcitabine and further disclose the role of PI3K/Akt signal transduction pathway in pancreatic cancer chemoresistance. Methods Human pancreatic cancer cell lines PANC-1, MIA-PaCa-2 and ASPC-1 were studied. The expression and kinase activity of TrkA were determined by Western blot analysis and in vitro kinase assay, respectively. RNA interference was used to suppress TrkA expression. Gemcitabine-induced cytotoxicity was determined by tetrazolium reduction assay and caspase profiling was performed. The effect of TrkA-specific siRNA on PI3K/Akt activity was also quantified. Results TrkA expression and kinase activity in cell lines were directly correlated with gemcitabine chemoresistance. TrkA-specific siRNA suppressed TrkA expression and kinase activity, and furthermore increased gemcitabine-induced, caspase-mediated apoptosis. PI3K/Akt activity was decreased by suppression of TrkA expression. Conclusion TrkA is a determinant of pancreatic adenocarcinoma chemoresistance and PI3K/Akt is a key signaling component by which NGF activation of the TrkA signal transduction pathway protects pancreatic cancer cells from chemotherapy-induced cell death.

OBJECTIVETo compare the clinical curative effect of thoracolumbar burst fracture treated by the posterior unilateral approach corpectomy fusion screw-rod fixation and anterior corpectomy bone fusion screw plate fixation.

METHODSFrom January 2008 to May 2014,36 cases of thoracolumbar burst fracture underwent operation of decompression, fusion, and internal fixation was retrospective analyzed. Among them, 16 patients were treated through posterior approach as posterior group, including 13 males and 3 females aged from 37 to 62 years old; 9 cases caused by falling injury, 3 cases by traffic accident injury,4 cases by heavy aboved;the injury segment was on T₁₂ in 2 cases, L₁ in 5 cases, L₂ in 7 cases, L₃ in 2 cases; according ASIA grade, 3 cases were grade A, 2 cases were grade B, 2 cases were grade C, 5 cases were grade D, 4 cases were grade E; the time between injury and operation ranged from 5 to 15 days. Other 20 patients were treated through anterior-lateral approach as anterior-lateral group, including 15 males and 5 females with age from 27 to 62 years old; 12 cases caused by falling injury, 4 cases by traffic accident injury, 4 cases by heavy aboved; the injury segment was on T₁₂ in 2 cases, L₁, in 7 cases, L₂ in 9 cases, L₃ in 2 cases; for ASIA grade: 4 cases were grade A, 2 cases were grade B, 4 cases were grade C, 6 cases were grade D, 4 cases were grade E; the time between injury and operation ranged from 4 to 12 days. The operation time, bleeding during operation and postoperative drainage volume were observed in two groups,and the changes of nerve function of ASIA grade, clinical efficacy,improved degree of thoracic and lumbar lordosis,and bony fusion were compared between two groups.

RESULTSAll patients were followed up from 12 to 24 months with an average of (15.8 ± 3.3) months. The operation time, bleeding during operation, and postoperative drainage volume had no significant different between two groups (P > 0.05). As compared with preoperative, ASIA grade of two groups at last follow-up had statistically significantly different (P < 0.01), the neural function of two groups after operation was recovered for different extent. The JOA score of two groups was compared between last follow-up and preoperative, the difference had statistically significant (P < 0.01), the two groups showed good clinical effect. The clinical results of ASIA grade, JOA score and RIS had no significant differences between two groups. All patients of two groups were obtained fusion. Thoracic and lumbar lordosis angle improvement degree had no significant difference between two groups ,it bad significant difference had statistical significance compared with preoperative, the two approaches could effectively restore the spinal sequence.

CONCLUSIONFor patients with thoracolumbar burst fracture just treated by anterior decompression and reconstruction of anterior column, according to the degree of operation performer' skill proficiency and the patient' condition to choose, but for patients must performed the spinal canal decompression anterior and posterior, the three column-reconstruction to required anterior-posterior approach, the posterior unilateral approach corpectomy fusion screw-rod fixation obviously shorten operation time, reduce the operation wound, it is worth the clinical promotion.

Adult ; Decompression, Surgical ; methods ; Female ; Humans ; Lumbar Vertebrae ; injuries ; surgery ; Male ; Middle Aged ; Pedicle Screws ; Reconstructive Surgical Procedures ; Retrospective Studies ; Spinal Fractures ; surgery ; Spinal Fusion ; methods ; Thoracic Vertebrae ; injuries ; surgery

Oxidation and free radicals participate in the pathological process of multiple diseases in organisms, and acupuncture shows good effect in antagonizing oxygen stress (OS). This article reviews the effect of acupuncture in antagonizing oxygen stress and the mechanism of its anti-free radical effect in various diseases. The authors hold that acupuncture not only has a chain-blocking effect, but also has preventive and repairing effects of anti-oxidation. And anti-OS action is one of the important mechanisms of acupuncture.
Acupuncture ; Chronic Disease ; therapy ; Humans ; Moxibustion ; Oxidation-Reduction ; Oxidative Stress

Objective To investigate mental symptoms of SARS patients and its related factors for three period-admission, discharge and three months after SARS crisis and to carry out mental intervention and effect evaluation.Methods The mental problems of SARS patients in three periods of admission, discharger and three months after discharger were continuously investigated.114 SARS patients came from seven designated hospitals in Taiyuan of Shanxi. The participants were assessed by self- compiled stressor Questionnaire, PSSS, SCSQ, SES, SCL-90 and EPQ.Results 1.Change tendency of factor score: The SCL-90 total and factors scores including obsessive-compulsion, phobic anxiety went up during discharge compared with admission. After that,these factors scores went down. The factors scores of somatization and depression descended continuously for three period. 2.Change tendency of the incidence:The incidence on factors of obsessive-compulsive, interpersonal sensitivity, phobic anxiety ascended during discharge compared with admission. Then,these factors scores descended. The other factors went down continually for three periods.3. The self-esteem was influencing factor on mental symptoms of SARS patients for three periods.Conscientious condition severity was influencing factor in admission and discharge.Negative coping was influencing factor in discharge and three months after SARS crisis. Education was influencing factor in three months after SARS crisis.4.After intervention ,the most mental symptoms of 35 SARS patients had mental problems were improved. Dissimilarly, a part of mental symptoms got severity.Conclusions 1.SARS patients exist severe mood disorders and have different influencing factors for three periods. They should be evaluated continuously and be intervened in time.2.The effect of mental intervention by telephone is not uncertainty.

Objective To investigate the genotype distribution of extended-spectrum?-lactamases(ESBLs) and AmpC?-lacta- mases produced by Escherichia coli and Klebsiella pneumoniae in 10 teaching hospitals of China.Methods 90 clinical strains of E.coli and 61 strains of K.pneumoniae isolated in 2003 and confirmed to produce ESBLs were collected from 10 teaching hos- pitals in China.Analytical isoelectric focusing was used to measure the pI of the?-lactamases.Conjugation experiment was used to study the transfer of cefoxitin resistance.Plasmid-mediated AmpC enzyme genes were amplified and sequenced by multiplex polymerase chain reaction (MPCR).Results The prevalence of ESBL-producing E.coli and K.pneumoniae was about 50% in Wuhan,Nanjing and Jinan.The prevalence of ESBL-producing E.coli was lower than K.pneumoniae in Beijing.However,in other hospitals the prevalence of ESBL-producing E.coli was a little higher than K.pneumoniae.About 24.4% of ESBL-pro- ducing E.coli isolates and 19.4% of ESBL-producing K.pneumoniae isolates were resistant to cefoxitin.Cefoxitin-resistant i solate was identified in all hospitals except Shenyang.Major genotype of ESBL-producing isolates was CTX-M.The CTX-M-9 group was the most common group,followed by CTX-M-1.More K.pneumoniae isolates produced both ESBLs and AmpC en- zyme than E.coli.The genotype was CTX-M/DHA-1.The PCR results of 3 transconjugants producing both ESBLs and AmpC enzyme were the same as their donor isolates.Conclusions The genotype of ESBL-producing isolates is mainly CTX-M-9 group in these teaching hospitals.More K.pneumoniae isolates produced both ESBLs and AmpC enzyme than E.coli.Most of these isolates are due to geno type CTX-M/DHA-1,which can spread through plasmid.

Objective The hepatitis B virus (HBV) core protein assembly inhibitors GLS4JHS could destroy HBV capsid assembly and the formation of non-capsid polymer structure.The aim of this study is to explore the mechanisms of GLS4JHS in inhibiting HBV replication.Methods HepAD38 cells was used as the study model.TaqMan real-time polymerase chain reaction (PCR) and quantitative real-time PCR with specific primers were used to measure the change in pregenomic RNA (pgRNA) and covalently closed circular DNA (cccDNA) levels under different concentrations.ChIP assay in HepAD38 cells was used to assess the recruitment of HBV core protein and histone modifications.Results The amount of cccDNA and pgRNA decreased with the increasing GLS4JHS concentrations.After the drug concentrations reached 400 nmol/L, cccDNA and pgRNA declined by 94% and 84%, respectively.Both HBV core protein occupancy on the cccDNA and cccDNA-bound H3 histone acetylation were reduced by GLS4JHS.Conclusions GLS4JHS decreases transcriptional activity of cccDNA and reduces pgRNA production by inhibiting cccDNA minichromosome bound to HBV core protein and acetylated histone H3, which results in HBV DNA formation.

Aim To investigate the effects of anti-in-flammation and antioxidation of an amphiphilic curcu-min derivative (Curc-OEG)on CCl4-induced hepatic fibrosis in rats.Methods Rats were randomly divided into four groups:control group,model group,curcumin and Curc-OEG treatment group.All rats except those in control group were given subcuta-neous injection of CCl4 and olive oil mixture,twice a week for 8 weeks.After 4 weeks,rats of control and model group were trea-ted with normal saline intravenously,curcumin group were ad-ministered with curcumin 400 mg.kg -1 .d -1 by gavage and Curc-OEG group were treated with Curc-OEG 1 00 mg.kg -1 .d -1 intra-venously respectively.After 4 weeks treatment,the serum levels of ALT and AST were tested.HE and Sirus staining were used to evaluate the extent of liver inflammation and fibrosis.The mRNA expression levels of proinflammatory cytokines of NF-kB,IL-1 β, IL-6,TNF-α,COX-2 were observed with Real Time PCR.The level of MOD,SOD and GSH in liver of rats were quantified. Results The levels of ALT in control,model,curcumin and Curc-OEG group was (31 .7 ±8.7)U·L -1 ,(383.0 ±75.6) U·L -1 ,(406.3 ±204.7)U·L -1 ,(1 07.0 ±73.7)U·L -1 respectively;that of AST was (1 37.7 ±32.7)U·L -1 ,(585.3 ±36.7)U·L -1 ,(485.0 ±246.5)U·L -1 ,(202.7 ±56.0) U·L -1 respectively,Curc-OEG possessed more hepatoprotective effects than that of curcumin.Liver pathology showed Curc-OEG treatment could significantly alleviate steatosis,reduce inflamma-tion and apparently suppress hepatic fibrogenesis by reducing the thickness of bridging fibrotic septa.Compared with curcumin, Curc-OEG down-regulated mRNA and protein expression levels of NF-kB,IL-1 β,IL-6,TNF-α,COX-2 (P <0.05 ).Moreo-ver,Curc-OEG reduced the level of MOD and increased the lev-els of SOD and GSH.Conclusion Curc-OEG could more sig-nificantly protect the rat liver from CCl4-caused fibrogenesis by anti-inflammatory and antioxidant effect than curcumin.

Humans ; Adenocarcinoma, Mucinous/pathology* ; Stomach Neoplasms/pathology*

Abstract Long-term use of levodopa in the treatment of Parkinson's disease can cause motor complications, which seriously impair the patients'motor function, reduce the quality of life, and aggravate the functional disability. Since there has been no effective treatment for motor complications, clarifying the influencing factors and prevention methods are conducive to reducing the risk of incidence and improving the quality of life of the patients. This paper summarizes the types and mechanism of motor complications of Parkinson's disease, the influencing factors ( levodopa dose, onset age, Helicobacter pylori infection and high protein diet ) and preventive measures ( psychological intervention, low protein diet, rehabilitation exercise and drugs ), so as to provide reference for the prevention and control of the disease.

OBJECTIVETo observe blood uric acid levels and Goldstein grading, as well as their correlation in Wilson's disease (WD) patients with different Chinese medical syndrome types.

METHODSTotally 906 WD patients in line with inclusive criteria were assigned to 6 groups, i.e., the heart spirit confused by phlegm group (HSCP, 26 cases), the phlegm-fire disturbing heart group (PFDH, 90 cases), the retention of damp-heat group (RDH, 113 cases), deficiency of qi and blood group (DQB, 168 cases), the deficiency of Gan-yin and Shen-yin group (DGYSY, 327 cases), the deficiency of Gan and Shen group (DGS, 182 cases) due to different Chinese medical syndrome types. Recruited were another 160 healthy subjects having similar ages and diet structures, who came for medical examinations, as the healthy control group. Venous blood was collected from the medial cubital vein of each-patient on an empty stomach in early mornings to detect blood uric acid levels. Results Blood uric acid levels were lower in each syndrome type group than in the healthy control group (146.08 +/- 67.24 micromol/L in the HSCP group; 157.08 +/- 69.77 micromol/L in the PFDH group; 162.58 +/- 97.72 micromol/L in the RDH group; 156.20 +/- 62.63 micromol/L in the DQB group; 161.83 +/- 111.23 micromol/L in the DGYSY group; 194.41 +/- 90.01 micromol/L in the DGS group; 242.39 +/- 87.55 micromol/L in the healthy control group, P < 0.01). Blood uric acid levels were higher in the DGYSY group than in the other 5 syndrome groups (P < 0.01). Correlation analyses between Goldstein grading and blood uric acid showed that, along with increased Goldstein grade (that was aggravating disease conditions), WD patients' blood uric acid levels decreased (P < 0.01).

CONCLUSIONSWD patient's blood uric acid levels decreased more. Blood uric acid levels and Goldstein grading were different in various Chinese medical syndrome types. Blood uric acid levels had certain value in assessing the severity of WD.

Asian Continental Ancestry Group ; Heart ; Hepatolenticular Degeneration ; blood ; classification ; diagnosis ; Humans ; Medicine, Chinese Traditional ; Syndrome ; Uric Acid ; blood