Objective To analyze the examination results of external quality assessment(EQA),at all levels of iodine deficiency disorders(IDD) net work laboratories in Ningxia from 2002 to 2012,and to provide a reliable laboratory quality assurance for surveillance and control of IDD.Methods The data of IDD network laboratories at Ningxia provincial,municipal and county levels from 2002 to 2012 were collected and analyzed.Results Both of the response rate and qualification rate of salt iodine and urinary iodine laboratories at the provincial level were 100％ in the past 11 years.The response rate and qualification rate of salt iodine laboratories at municipal level were also 100％ ; the response rate of urinary iodine was 100％ since 2005,and the qualification rate had been 100％ for six years since 2007.The response rate of salt iodine at county level had been 100％ since 2004,and the qualification rate had been 100％ for four years since 2009.Conclusions IDD network laboratory in Ningxia Province runs good,and the quality control measures are solid and effective.

Objective:According to the tumor of children psychology, explore a set of suitable for children accurate tumor radiotherapy positioning method, in order to improve the positioning accuracy, thus improve the tumor clinical cure rate.Methods: 1.Eliminate fear; 2.Adaptability training; 3.The methods of psychological suggestion. Evaluation method: take psychological induction of radiation induced by radiation therapy in children with and without taking mental children from the placement time, downtime in drug utilization rate, treatment rate and bit error rate comparison.Results: There is obvious difference between two groups (P<0.05).Conclusion: radiotherapy positioning of children with psychological intervention in the method, can improve the treatment of children's compliance.

HOX gene belongs to a highly conserved subgroup of the homeobox superfamily .The HOX genes constitute a family of transcription factors that play key roles in embryonic development , regulating numerous processes , such us cellular growth, differentiation, apoptosis, motility and angiogenesis.The present review shows that there is a close relationship between aberrant expression of HOX genes and malignancy .This article summarizes briofly the advances in the research on HOX genes and their roles in tumor genesis .

AIM: To examine COX-2 expression in esophageal carcinoma,and to study relationships between COX-2 expression and clinicopathological features and prognosis of esophageal carcinoma patients.METHODS: 89 paraffin-embedded tissue samples from patients with esophageal carcinoma were collected,its clinicopathological features such as tumour differentiation,depth of invasion,length and site of the tumor,regional lymph node metastases,distant metastasis were recorded.Survival time of 81 cases were also recorded.By SP immunohistochemistry method,the expression of COX-2 in tumor samples was examined.RESULTS: COX-2 expression in esophageal carcinoma was markedly higher than that in nomal esophagus,the expression was higher in less differentiated and deeper invaded cases(P0.05).Cases of esophageal carcinoma with lower COX-2 expression had longer survival time than those with higher COX-2 expression(P

Objective:To investigate the relationship between EGFR mutations and pulmonary tuberculosis in lung adenocarcino-ma. Methods:We detected EGFR mutations in 506 patients with lung adenocarcinoma by PCR amplification and sequencing and ana-lyzed the relationship between the mutations observed and pulmonary tuberculosis. Survival analysis was performed using the Ka-plan-Meier method with log-rank tests. Result:A total of 218 patients showed EGFR mutations;of these patients, 25 had a clinical his-tory of pulmonary tuberculosis. Compared with lung adenocarcinoma patients with no history of tuberculosis, patients with a history of pulmonary tuberculosis showed higher incidence rates of EGFR mutations, especially of exon 21 (P=0.047, P=0.002). Higher incidence rates of EGFR mutations, especially of exon 21, were observed in patients with lung cancer and tuberculosis in the same lobe or the same side of the lung than in those who had lung cancer and tuberculosis in opposite sides of the lung (P=0.02, P=0.03). Survival analy-sis showed that adenocarcinoma patients with a history of pulmonary tuberculosis have 2-year survival rates lower than that of adeno-carcinoma patients with no history of the disease (P=0.039). In patients adenocarcinoma associated with tuberculosis patients without EGFR-TKIs treatment, the 2-year survival rates of EGFR mutation patients and those without EGFR mutation showed no statistically significant difference (P=0.948). At the same time, we got the same results in adenocarcinoma associated with tuberculosis patients with EGFR-TKIs treatment (P=0.425). Conclusion:Lung adenocarcinoma patients with a history of pulmonary tuberculosis have high-er incidence rates of EGFR mutations, and EGFR mutations are not related to disease prognosis.

Animals ; Cochlea ; growth & development ; metabolism ; Female ; Guinea Pigs ; Male ; Nerve Growth Factor ; metabolism

Objective To investigate the effect of dexmedetomidine postconditioning on acute lung injury (ALI) induced by lipopolysaccharide (LPS) in rats.Methods Fifty male Spragne-Dawley rats,aged 7-8 weeks,weighing 200-250 g,were randomly divided into 5 groups (n =10 each) using a random number table:control group (group C),LPS group and postconditioning with 3 different doses of dexmedetomidine groups (LD,MD and HD groups).ALI was induced with LPS 8 mg/kg injected via the caudal vein in LPS,LD,MD and HD groups.Dexmedetomidine 5,10 and 15 μg/kg were injected intraperitoneally in LD,MD and HD groups,respectively,at 1 h after LPS injection.The equal volume of normal saline was injected intraperitoneally in C and L groups.Blood samples were taken from the left ventricle at 6 h after dexmedetomidine administration,then the animals were sacrificed and broncheoalveolar lavage fluid (BALF) was collected.The concentrations of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) in plasma and BALF were detected by ELISA.The lungs were removed for microscopic examination of pathological changes and for determination of wet/dry lung weight (W/D) ratio and expression of Toll-like receptor 4 (TLR4) mRNA (by RT-PCR) in lung tissues.Results Compared with group C,W/D ratio,pathological scores,and the concentrations of IL-6 and TNF-α in plasma and BALF were significantly increased,and the expression of TLR4 mRNA was up-regulated in LPS,LD,MD and HD groups.Compared with LPS and LD groups,W/D ratio,pathological scores,and the concentrations of IL-6 and TNF-α in plasma and BALF were significantly decreased,and the expression of TLR4 mRNA was down-regulated in MD and HD groups.There was no significant difference in the parameters mentioned above between LPS and LD groups,and between MD and HD groups.Conclusion Dexmedetomidine postconditioning can alleviate ALI induced by LPS in rats,and up-regulated TLR4 mRNA expression and reduced inflammatory responses may be involved in the mechanism.

Objective To establish a HPLC method for the determination of galuteolin in Qingyan buccal tablets.Methods A Phenomenex luna C18 column served as stationary phase and the mobile phase was acetonitrile-0.5 %glacial acetic acid,gradient elution with the flow rate of 1 mL?min-1.The column temperature was 25 ℃and detection wavelength was 350 nm.Results A good linearity of galuteolin was in the range of 0.077 12 ?g～0.771 2 ?g and r=0.999 6.The average recovery of galuteolin was 101.35 %and RSD=1.58 %.Conclusion This method is simple,sensitive,accurate,and will provide evidence for the determination of galuteolin in compound preparations.

AIM: To investigate the expression of MAT1 protein in pancreatic cancers and the relationship between MAT1 and clinicopathological features of pancreatic cancers. METHODS: 94 surgical specimens, including 70 pancreatic cancers, 10 pancreatic benign tumors, 14 chronic pancreatitis and 10 autopsy normal pancreas tissues, were analyzed immunohistochemically, and then MAT1 expression and clinicopathological features were compared. RESULTS: MAT1 was expressed mainly in the cancer cells,and also in the fibroblasts, where it was localized within the cytoplasm and nuclear envelope. MAT1 expression was found in 75.7% (53/70) of the cancers, but not detected or weakly expressed in control tissues. There was a significant difference in expression of MAT1 among the above four tissues (P

Objective To investigate the lung CT findings in patients with primary Sj(o)gren's syndrome (pSS) and clinical significance.Methods Images of lung CT scans of 68 patients with pSS were retrospectively observed.The distribution characteristics of lung lesions were observed.CT visual score were used to quantitatively analyze lung lesions.Binary classification unconditional logistic regression analysis was used to investigate the relationship between pulmonary arterial hypertension (PAH) and anti-SSB seropositivity in Patients with pSS.Results The 68 cases of patients with pSS,PAH in 13 (19％),anti-SSB seropositivity in 25(37％),CT shows normal in 13 (19％),interlobular septal thickening,ground-glass opacity and intralobular interstitial thickening were frequent findings.The lesion distribution was in the peripheral and lower lung fields.Interlobular septal thickening and cysts were associated with PAH in Patients with pSS (OR=1.780,2.513,P＜0.05),cysts was significantly associated with anti-SSB seropositivity (OR =10.530,P＜0.05).Conclusion Lung CT can quantitatively analyze the degree of pSS lung damage,and provide helps for clinical treatment and prognosis.