Pharmacodynamics of recombinant IFN-beta during long-term treatment of malignant melanoma.
J Interferon Cytokine Res
; 16(10): 777-81, 1996 Oct.
Article
em En
| MEDLINE
| ID: mdl-8910762
ABSTRACT
The pharmacodynamics and biologic activities of recombinant human interferon-beta (rHuIFN-beta) derived from chinese hamster ovary (CHO) cells were examined during long-term therapy in 7 melanoma patients. The CHO-derived rHuIFN-beta was given s.c. in a dose of 3 x 10(6) U three times per week for 24 weeks. Serum levels of IFN could not be detected before and 48 h after the s.c. injections. 2'-5'-Oligoadenylate synthetase (2-5 OAS), beta 2-microglobulin, and neopterin levels increased significantly 48 h after application, with a maximum after 96 h. Subsequently, the values decreased and remained only slightly elevated during the long-term therapy. Natural killer (NK) cell activity increased in the first 96 h significantly and fell below pretreatment values after 4 weeks. The decrease of biologic response could not be attributed to the occurrence of anti-IFN-beta antibodies because only 2 of the 7 patients developed neutralizing antibodies after 16 and 24 weeks of treatment, respectively. This trial confirms the biologic potency of CHO-derived rHuIFN-beta. However, the selected parameters demonstrate that immunostimulation is only possible over a short treatment period.
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Base de dados:
MEDLINE
Assunto principal:
Biopterinas
/
2',5'-Oligoadenilato Sintetase
/
Microglobulina beta-2
/
Interferon beta
/
Melanoma
Idioma:
En
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
Alemanha