Zobrazeno 1 - 10
of 27
pro vyhledávání: '"Liviu A. Sicinschi"'
Autor:
Reed Harder, Alvaro Pazos, Timothy L. Cover, Rafal S. Sobota, Barbara G. Schneider, Liviu A. Sicinschi, Keith T. Wilson, Thibaut de Sablet, Pelayo Correa, Richard M. Peek, Luis Eduardo Bravo, Carrie L. Shaffer, Nuri Kodaman, Judith Romero-Gallo, M. Blanca Piazuelo, Scott M. Williams, Robertino M. Mera
Publikováno v:
Proceedings of the National Academy of Sciences. 111:1455-1460
Helicobacter pylori is the principal cause of gastric cancer, the second leading cause of cancer mortality worldwide. However, H. pylori prevalence generally does not predict cancer incidence. To determine whether coevolution between host and pathoge
Autor:
Pelayo Correa, María Clara Yépez, Dexter T. Thompson, Benjamin D. Gold, Timothy L. Cover, Keith T. Wilson, Liviu A. Sicinschi, John T. Loh, Barbara G. Schneider, Luis Eduardo Bravo, Richard M. Peek
Publikováno v:
Helicobacter. 17:96-106
Background H. pylori infection is usually acquired in childhood, but little is known about its natural history in asymptomatic children, primarily due to the paucity of non-invasive diagnostic methods. H. pylori strains harboring cagA and specific al
Autor:
Maria Constanza Camargo, Barbara G. Schneider, Richard M. Peek, Alberto G. Delgado, Liviu A. Sicinschi, Maria Blanca Piazuelo, Stuart S. Hobbs, Pelayo Correa, Judith Romero-Gallo, Luis Eduardo Bravo, Robertino M. Mera, Uma Krishna
Publikováno v:
Clinical Microbiology and Infection. 16(4):369-378
The C-terminus of the Helicobacter pylori CagA protein is polymorphic, bearing different EPIYA sequences (EPIYA-A, B, C or D), and one or more CagA multimerization (CM) motifs. The number of EPIYA-C motifs is associated with precancerous lesions and
Autor:
M. Blanca Piazuelo, Robertino M. Mera, Barbara G. Schneider, Pelayo Correa, Liviu A. Sicinschi, M. Constanza Camargo, Yolanda Mora, Hernan Correa, Richard M. Peek, Alberto G. Delgado, Luis Eduardo Bravo
Publikováno v:
Human Pathology. 39:1360-1369
Eosinophils and mast cells participate in the immune response against Helicobacter pylori, but their involvement in the gastric precancerous process is unclear. This study aimed to estimate eosinophil and mast cell density in antral mucosa in subject
Autor:
Richard M. Peek, Alberto G. Delgado, Liviu A. Sicinschi, Luis Eduardo Bravo, Pelayo Correa, M. Blanca Piazuelo, Barbara G. Schneider, Judith Romero-Gallo, M. Constanza Camargo
Publikováno v:
Helicobacter. 13:135-145
cagA-positive and vacA s1 and m1 genotypes of Helicobacter pylori are associated with an elevated risk of gastric cancer (GC). We determined these genotypes using paraffin-embedded gastric biopsy specimens harvested from infected individuals and comp
Autor:
Jovanny Zabaleta, Richard M. Peek, M. Blanca Piazuelo, Karen J. Goodman, Liviu A. Sicinschi, Barbara G. Schneider, Elizabeth T. H. Fontham, M. Constanza Camargo, Robertino M. Mera, Pelayo Correa
Publikováno v:
Cancer Epidemiology, Biomarkers & Prevention. 15:1674-1687
Background: Polymorphisms of interleukin-1B (IL1B) and its receptor antagonist (IL1RN) genes have been inconsistently associated with gastric cancer risk. We examined these associations by performing meta-analyses. Materials and Methods: Twenty-five
Autor:
Jovanny Zabaleta, Liviu A. Sicinschi, Barbara G. Schneider, Elizabeth T. H. Fontham, Augusto C. Ochoa, Pelayo Correa, M. Constanza Camargo, M. Blanca Piazuelo, William Ferrante, Luis A. Balart
Publikováno v:
The American Journal of Gastroenterology. 101:163-171
Interleukin-1beta plays an important role in inflammation and gastric physiology. Polymorphisms of the IL1B gene have been associated with gastric atrophy and increased cancer risk, especially in Helicobacter pylori-infected subjects. The aim of this
Autor:
Lizbeth López-Carrillo, M. Constanza Camargo, Maria Blanca Piazuelo, Robin R. Henry, Liviu A. Sicinschi, Jovanny Zabaleta, Rosa A. Sierra, Pelayo Correa, Jia Chen, Barbara G. Schneider
Publikováno v:
International Journal of Cancer. 118:649-657
Several polymorphisms of the IL1B and IL10 gene promoters have been reported to be associated with gastric cancer risk in Caucasians. However, studies in other populations have shown differing results. We aimed to test for associations between polymo
Publikováno v:
Helicobacter. 8:601-607
Background. We compared results of genotyping of Helicobacter pylori cagA and vacA virulence genes in DNA from gastric biopsies, both paraffin-embedded and frozen, and from stool samples, in order to evaluate the comparative sensitivity of the stool
Publikováno v:
Journal of Microbiological Methods. 52:197-207
The detection and molecular typing of Helicobacter pylori virulence genes in human stool specimens by polymerase chain reaction (PCR) require an adequate amount of bacterial DNA and an appropriately adjusted PCR protocol. DNA was isolated from stool