Effects of lead on red blood cell membrane proteins.
Int Arch Occup Environ Health
; 61(1-2): 71-5, 1988.
Article
em En
| MEDLINE
| ID: mdl-3198286
ABSTRACT
The effects of lead on red blood cell (RBC) membrane proteins were studied in two groups of workers with different lead exposure levels Group I (6 subjects employed in a battery plant) with a mean blood lead of 40.1 (SD = 3.7) micrograms/100 ml; Group II (5 workers employed in different industries) with a mean blood lead of 60.6 (SD = 8.0) micrograms/100 ml, compared with a control group with mean blood lead of 15.6 (SD = 9.3) micrograms/100 ml. The analysis of RBC membrane polypeptides was carried out by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), and by using a densitometer for percentage measurement of the bands corresponding to protein fractions. The results show a very significant decrease in Band 3 (anion channel) and 4.1 in more exposed workers (Group II) only. The effects of lead on RBC membrane proteins seem to be evident at blood-lead levels higher (greater than 50 micrograms/100 ml) than those previously reported in literature. These results confirm the effects of lead on membrane proteins, even if the exact mechanism, particularly the influence of proteolysis and the meaning of the interference, still needs to be investigated thoroughly.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Membrana Eritrocítica
/
Chumbo
/
Proteínas de Membrana
Limite:
Adult
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Int Arch Occup Environ Health
Ano de publicação:
1988
Tipo de documento:
Article
País de afiliação:
Itália