Ultrastructural changes in esophageal mucosa of chronic tobacco chewers.
Artigo
em Inglês
| IMSEAR
| ID: sea-24934
ABSTRACT
Seventeen chronic tobacco chewers and three control subjects underwent clinical evaluation, upper gastrointestinal endoscopy and esophageal mucosal biopsies. The esophageal biopsies were processed and examined under the electron microscope. A large number of ultrastructural abnormalities such as discontinuous, fragmented basement membrane, with reduction in hemidesmosomes, widened intercellular spaces were found in the esophageal mucosa of chronic tobacco chewers which resembled the ultrastructural features of experimental carcinogenesis and leukoplakia. It is concluded that chronic chewing of tobacco produces ultrastructural abnormalities in the esophageal mucosa which could be important precursors for esophageal malignancy.
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Assunto principal:
Plantas Tóxicas
/
Fatores de Tempo
/
Membrana Basal
/
Biópsia
/
Humanos
/
Microscopia Eletrônica
/
Tabaco sem Fumaça
/
Epitélio
/
Esôfago
/
Junções Intercelulares
Idioma:
Inglês
Ano de publicação:
1993
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS