European journal of endocrinology · 2008
Clinical use of cabergoline as primary and adjunctive treatment for acromegaly.
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Moyes V J, Metcalfe K A, Drake W M
Аннотация
BACKGROUND: Cabergoline is a dopamine agonist that may be used as primary or adjunctive therapy for acromegaly. Although one study suggested biochemical control may be achieved in a substantial proportion of patients, it is still commonly perceived to be a relatively ineffective treatment.
DESIGN AND METHOD: A prospective audit was performed of 15 consecutive acromegalic patients (eight males, seven females, median age 55, range 31-92 at presentation) treated with cabergoline to determine the effective dose and tolerability. All had normal anterior pituitary function; two patients had hyperprolactinaemia. Magnetic resonance imaging revealed nine adenomata, two partially empty sellae and four structurally normal pituitary glands. Nine patients had undergone transsphenoidal surgery 1-12 months, and one patient had received pituitary radiotherapy 18 years, prior to commencement of cabergoline. All patients had biochemical GH excess; median serum IGF1 471 ng/ml, range 239-746 ng/ml. The calculated mean of a series of GH measurements ranged from 2.7-45.8 mIU/l, median 9.7 mIU/l.
RESULTS: On a median weekly dose of cabergoline of 1.75 mg (range 0.5-7 mg) normalisation of both IGF1 and GH occurred in 4 out of the 15 patients (27%). Out of the 15 patients (33%), 5 achieved a serum IGF1 within the reference range with notable reductions seen in a further five patients. Nine patients (60%) achieved a mean serum GH level of less than 5 mIU/l. Duration of treatment was 2-52 months and was well tolerated in 14 patients.
CONCLUSION: Cabergoline can be an effective and well tolerated primary or adjunctive therapy for acromegaly and useful clinical responses are noted even with modest doses.
DESIGN AND METHOD: A prospective audit was performed of 15 consecutive acromegalic patients (eight males, seven females, median age 55, range 31-92 at presentation) treated with cabergoline to determine the effective dose and tolerability. All had normal anterior pituitary function; two patients had hyperprolactinaemia. Magnetic resonance imaging revealed nine adenomata, two partially empty sellae and four structurally normal pituitary glands. Nine patients had undergone transsphenoidal surgery 1-12 months, and one patient had received pituitary radiotherapy 18 years, prior to commencement of cabergoline. All patients had biochemical GH excess; median serum IGF1 471 ng/ml, range 239-746 ng/ml. The calculated mean of a series of GH measurements ranged from 2.7-45.8 mIU/l, median 9.7 mIU/l.
RESULTS: On a median weekly dose of cabergoline of 1.75 mg (range 0.5-7 mg) normalisation of both IGF1 and GH occurred in 4 out of the 15 patients (27%). Out of the 15 patients (33%), 5 achieved a serum IGF1 within the reference range with notable reductions seen in a further five patients. Nine patients (60%) achieved a mean serum GH level of less than 5 mIU/l. Duration of treatment was 2-52 months and was well tolerated in 14 patients.
CONCLUSION: Cabergoline can be an effective and well tolerated primary or adjunctive therapy for acromegaly and useful clinical responses are noted even with modest doses.