OBJECTIVETo investigate the mutations in exon 19 of epidermal growth factor receptor (EGFR) gene in non-small cell lung cancer from Chinese patients.

METHODSGenomic DNA was extracted from 72 lung cancer tissues. Then the exon 19 of EGFR gene was amplified by nested PCR and sequenced.

RESULTSIn 13 tumor tissues, multi-nucleotide in-frame deletion mutations at the exon 19 of EGFR gene, had been detected. There were 4 mutation types. The mutation rate was 18.1%. The mutations were all heterozygous. There was association of the exon 19 mutation of EGFR gene with adenocarcinoma, female patients and non-smokers.

CONCLUSIONThere were multi-nucleotide in-frame deletion mutations in exon 19 of EGFR gene. Mutations of the exon 19 of EGFR gene were higher in female, non-smoking and adenocarcinoma patients.

Adenocarcinoma ; genetics ; Adult ; Aged ; Aged, 80 and over ; Carcinoma, Non-Small-Cell Lung ; genetics ; DNA Mutational Analysis ; Exons ; genetics ; Female ; Genes, erbB-1 ; genetics ; Humans ; Male ; Middle Aged ; Mutation ; Polymerase Chain Reaction ; Sex Factors ; Smoking

Ischemic stroke is prone to recurrence, which is the leading cause of death and disability in stroke. Using predictive model to assess the recurrence risk in patients with ischemic stroke, stratifying risk, and formulating corresponding interventions to reduce the recurrence rate are the core contents of secondary prevention. In this paper, research progress on the prediction of recurrence risks of ischemic stroke recently is summarized from the predicting content or factors, including clinical factors, imaging factors, biological markers and traditional Chinese Medicine syndrome differentiation, and the methods of constructing prediction models about traditional statistical methods and machine learning, in order to provide a reference for clinical work.

Aim To evaluate the effects of puerarin (PR) on pancreatic islet MIN6 cell injury and apopto- sis induced by palmitic acirl ( PA).Methods MIN6 cells pretreated with 2 h different concentrations of PR were then co-cultured with 120 (xmol • L"1 PA for 24 h to establish the cell injury and apoptosis model.MTT, LDH,MDA and GSH were used to determine the dam¬age of MIN6 cells.AOEB fluorescence staining was used to detect the apoptosis of MIN6 cells.Western blot was used to detect the expressions of inflammation- related protein NF-kB , apoptosis-related factors Bcl-2 and Bax.Results Compared with model group, cell viability and GSH activity of puerarin administration groups increased, LDH and MDA contents decreased.the protein expressions of p-NF-KB and Bax were down-regulated, and the protein expressions of Bcl-2 were up-regulated (P <0.05).Conclusions Puerar- in ean improve the function of pancreatic islet cells by inhibiting apoptosis and inflammation, and ameliorate pancreatic islet MIN6 cell injury and apoptosis induced by palmitic acid-induced, alleviate MIN6 cell injury in¬duced by inflammatory factors, which may be achieved by down-regulating the expression of p-NF-KB and Bax proteins,and up-regulating the expression of Bcl-2 pro¬tein.