Propylthiouracil-induced chemical hypothyroidism with high-dose tamoxifen prolongs survival in recurrent high grade glioma: a phase I/II study.
Anticancer Res
; 23(1B): 617-26, 2003.
Article
em En
| MEDLINE
| ID: mdl-12680157
ABSTRACT
BACKGROUND:
High-dose tamoxifen has had disappointing results as a palliative therapy in recurrent glioma. Insulin-like growth factor 1 (IGF-1) is a thyroid hormone modulated naturally occurring antagonist of tamoxifen-induced cytotoxicity. Thyroid function was suppressed to reduce IGF-1 levels in glioma patients and high-dose tamoxifen administered. MATERIALS ANDMETHODS:
Propylthiouracil was used to induce chemical hypothyroidism in 22 patients with recurrent glioma. Tamoxifen was started within one month and given in escalating doses from 40 mg twice a day up to 80 mg 3 times a day. No significant toxicity developed.RESULTS:
Eleven out of 22 patients became hypothyroid. No patients experienced symptoms of clinical hypothyroidism. Median survival was significantly longer in the hypothyroid group (10.1 months versus 3.1 months); p = 0.03. There was a significant decrease in blood levels of IGF-1 (p = 0.02). in hypothyroid patients.CONCLUSION:
Patients treated for recurrent high-grade gliomas with high-dose tamoxifen had significantly longer survival when chemical hypothyroidism was induced with propylthiouracil.
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Base de dados:
MEDLINE
Assunto principal:
Propiltiouracila
/
Tamoxifeno
/
Antitireóideos
/
Neoplasias Encefálicas
/
Antineoplásicos Hormonais
/
Glioma
/
Hipotireoidismo
/
Recidiva Local de Neoplasia
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Revista:
Anticancer Res
Ano de publicação:
2003
Tipo de documento:
Article
País de afiliação:
Estados Unidos