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1.
Nat Commun ; 10(1): 5334, 2019 11 25.
Artigo em Inglês | MEDLINE | ID: mdl-31767869

RESUMO

Protein products of the regenerating islet-derived (REG) gene family are important regulators of many cellular processes. Here we functionally characterise a non-protein coding product of the family, the long noncoding RNA (lncRNA) REG1CP that is transcribed from a DNA fragment at the family locus previously thought to be a pseudogene. REG1CP forms an RNA-DNA triplex with a homopurine stretch at the distal promoter of the REG3A gene, through which the DNA helicase FANCJ is tethered to the core promoter of REG3A where it unwinds double stranded DNA and facilitates a permissive state for glucocorticoid receptor α (GRα)-mediated REG3A transcription. As such, REG1CP promotes cancer cell proliferation and tumorigenicity and its upregulation is associated with poor outcome of patients. REG1CP is also transcriptionally inducible by GRα, indicative of feedforward regulation. These results reveal the function and regulation of REG1CP and suggest that REG1CP may constitute a target for cancer treatment.

2.
Asia Pac J Clin Oncol ; 12(1): 70-6, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26668125

RESUMO

AIMS: To compare serum protein expression profiles between lung cancer patients and healthy individuals, and to examine whether there are differences in serum protein expression profiles among patients with lung cancers of different histological types and whether the characteristic expression of serum proteins may assist in differential diagnosis of various subtypes of lung cancers. METHODS: Blood samples were collected from 123 lung cancer patients before commencement of treatment who attended Shanxi Cancer Hospital, China, between 2008 and 2013. Blood samples from 60 healthy individuals were also collected in the same period. Serum protein expression profiles were analyzed using surface-enhanced laser desorption/ionization time-of-flight mass spectrometry. The differences in the serum protein spectrums of lung cancer patients with different histological subtypes were analyzed by one-way Analysis of Variance and receiver operating characteristic curves. RESULTS: A cluster of 48 protein mass-to-change ratio (M/Z) peaks was differentially expressed between sera of lung cancer patients and healthy individuals. The M/Z 1205, 4673, 1429 and 4279 peaks were differentially expressed among patients with lung squamous cell carcinomas, adenocarcinomas and small-cell lung carcinomas. CONCLUSION: These results reinforce the notion that profiling of serum proteins may be of diagnostic value in lung cancer, and suggest that the differences in serum protein profiles may be useful in differential diagnosis of lung cancers of varying histological subtypes.


Assuntos
Biomarcadores Tumorais/sangue , Proteínas Sanguíneas/análise , Neoplasias Pulmonares/sangue , Neoplasias Pulmonares/patologia , Idoso , China , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Proteômica/métodos , Curva ROC , Espectrometria de Massas por Ionização e Dessorção a Laser Assistida por Matriz/métodos
3.
Zhonghua Jie He He Hu Xi Za Zhi ; 36(8): 577-80, 2013 Aug.
Artigo em Chinês | MEDLINE | ID: mdl-24252733

RESUMO

OBJECTIVES: To improve the understanding of bronchial Dieulafoy disease by summarizing the clinical and literature reported cases. METHODS: The clinical data of 3 patients with bronchial Dieulafoy disease diagnosed by pathology from January 1, 2007 to May 31, 2012 in our hospital was collected and summarized. The data of 19 cases from literature case report regarding bronchial Dieulafoy disease both in Chinese and English were also reviewed through databases including Wanfang Data, National Knowledge Infrastructure, National Center for Biotechnology Information and Ovid Technologics from January 1, 2005 to May 31, 2012. The clinical characteristics, diagnosis and treatment of all the 22 cases were summarized and analyzed. RESULTS: The average age of the 22 cases with bronchial Dieulafoy disease was (47 ± 15) years, and the preponderance was in male adults (16/22). Right lung (16/22) was more commonly involved than the left lung (4/22), and rarely in both lungs (2/22). Eight cases had smoking history, and 10 cases had underlying diseases such as tuberculosis.Sudden onset of massive hemoptysis was a common manifestation. Massive or lethal hemorrhage was often caused by biopsy injury. The abnormality of bronchial Dieulafoy disease was usually demonstrated as nodular lesions within the lumen of the bronchus.However, It was unable to determine their originating of the anomalous arteries in half of the cases(11/22). Most anomalous arteries confirmed by pathology were branched from bronchial artery (9/22), and rarely from pulmonary artery (2/22). The definitive diagnosis was made by pathological examination.Selective bronchial artery embolization and pulmonary lobectomy were the major therapeutic strategies, but bleeding may relapse after bronchial artery embolization, and lobectomy of the lung was a cure approach. CONCLUSIONS: Bronchial Dieulafoy disease should be differentiated in patients with massive and unexplained hemoptysis.It takes a very high risk for biopsy, which rarely needs to be implemented. Bronchial arteriography and selective bronchial artery embolization should be promptly carried out to avoid life-threatening hemoptysis.Lobectomy could be an alternative choice for a cure.


Assuntos
Artérias Brônquicas/patologia , Broncopatias/diagnóstico , Broncopatias/terapia , Hemoptise/diagnóstico , Hemoptise/terapia , Adulto , Angiografia , Artérias Brônquicas/diagnóstico por imagem , Broncopatias/complicações , Broncoscopia , Embolização Terapêutica , Feminino , Hemoptise/etiologia , Humanos , Pulmão/irrigação sanguínea , Pulmão/patologia , Pulmão/cirurgia , Masculino , Pessoa de Meia-Idade , Pneumonectomia , Estudos Retrospectivos , Resultado do Tratamento
4.
Zhonghua Jie He He Hu Xi Za Zhi ; 32(1): 17-20, 2009 Jan.
Artigo em Chinês | MEDLINE | ID: mdl-19484956

RESUMO

OBJECTIVE: To investigate the results of spirometry testing used in the screening of COPD from at risk populations. METHODS: A survey of the population aged over 40 years with any of chronic cough and sputum, dyspnea, heavy tobacco smoke was performed, using a questionnaire on clinical characteristics of COPD. Spirometry and chest X ray examination were performed. Different screening methods were compared for sensitivity and specificity for COPD diagnosis. RESULTS: Of 241 surveyed persons, 156 were diagnosed as having COPD, among whom 126 cases were firstly diagnosed. Among all surveyed persons, 87 (36. 1%) cases had mild and moderate COPD, while 69 (28. 6%) had severe and very severe disease. The sensitivity and specificity for diagnosis of COPD of shortness of breath were 61.5% and 61.2% respectively. Combination of respiratory symptoms and risk factors improved the screening power. More than 40 years of age combined with any of heavy smoking, chronic cough and sputum, or shortness of breath, improved the sensitivity to more than 90 percent. CONCLUSIONS: Spirometry test screening of the at risk population can effectively improve early diagnosis of COPD.


Assuntos
Programas de Rastreamento/métodos , Doença Pulmonar Obstrutiva Crônica/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Diagnóstico Precoce , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medição de Risco , Sensibilidade e Especificidade , Fumar , Espirometria
6.
Wei Sheng Wu Xue Bao ; 45(6): 915-9, 2005 Dec.
Artigo em Chinês | MEDLINE | ID: mdl-16496703

RESUMO

Culture independent method was used to study the diversity of rumen bacteria. Molecular diversity of rumen bacteria was analyzed by PCR amplification and sequencing of 16S rDNA clone libraries prepared from the rumen content of Holstein cows. The total DNA directly extracted from rumen fluid was used as PCR template. Bacteria universal primer 27F and 1492R was used as primer. Random clones, containing almost full size 16S rDNA sequences (about 1.5 kb long), were sequenced and subjected to an on line similarity search. The 16S rDNA sequence analysis indicated that more than half of the sequences belonged to the not-yet-cultured groups. The 16S rDNA similarity levels with cultured species was less than 90%. The bacterial community structure was also revealed by phylogenetic tree of known sequences and selected sequence. In the library from the rumen fluid, the sequences were mainly affiliated with the following major phyla: low G + C Gram-positive bacteria, Cytophaga-Flexibacter-Bacteroides, and the remaining sequences were placed within not-yet-uncultured groups that had an uncertain affiliation. These several sequences are likely to represent novel taxonomic groupings. The nucleotide sequences have been submitted to the GenBank/EMBL /DDBJ databases under accession numbers AY986777-AY986791.


Assuntos
Bactérias/classificação , Rúmen/microbiologia , Animais , Bactérias/genética , Bactérias/crescimento & desenvolvimento , Sequência de Bases , Bovinos , Meios de Cultura , DNA Bacteriano/isolamento & purificação , Dados de Sequência Molecular , Filogenia , RNA Ribossômico 16S/genética
7.
Zhonghua Liu Xing Bing Xue Za Zhi ; 26(11): 907-10, 2005 Nov.
Artigo em Chinês | MEDLINE | ID: mdl-16676616

RESUMO

OBJECTIVE: To study the association between the functional polymorphism of matrix metalloproteinases (MMPs) and the development of chronic obstructive pulmonary disease (COPD). METHODS: 147 COPD patients and 120 healthy smoking controls were selected. Spirometry and chest X-rays had been taken. Questionnaires including sex, age, smoking history, occupational exposure were completed. MMP-9 (-1562 C/T), MMP-1(-1607 1G/2G), MMP-12 (-82 A/G), MMP-12(-357 Asn/ Ser) alleles were determined using PCR-RFLP method. Independent samples T test analysis was carried out to compare patients' age, smoking index, FEV1 /FVC, FEV1 % pred with that of healthy controlled group. The frequencies of genotypes and alleles between groups were analyzed by chi-square tests and multilogistic regression. RESULTS: MMP12 Asn/Asn, CT/AsnAsn were risk factors for smoking-induced COPD. The ORs were 2.361 (95% CI: 1.369-4.017) and 2.433(95% CI: 1.159-5.342) respectively while CC/1G1G/ SerSer seemed to be a protective factor for smoking-induced COPD, with OR as 0.457 and 95% CI as 0.231-0.911. CONCLUSION: Asn/Asn, CT/AsnAsn might be susceptible genotypes while CC/GG/SerSer might serve as protective genotype.


Assuntos
Grupos Étnicos/genética , Predisposição Genética para Doença , Metaloproteinase 12 da Matriz/genética , Metaloproteinase 1 da Matriz/genética , Metaloproteinase 9 da Matriz/genética , Polimorfismo Genético , Doença Pulmonar Obstrutiva Crônica/genética , Idoso , Estudos de Casos e Controles , China/etnologia , Feminino , Frequência do Gene , Genótipo , Humanos , Modelos Logísticos , Masculino
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