DISSOCIATION OF BIOCHEMICAL AND TUMOR-SUPRESSIVE EFFECTS OF SOMATOSTATIN ANALOGS

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Abstract

Normalization of the growth hormone and IGF-1 levels during somatostatin analogs treatment usually is a predictor of somatotropinoma volume reduction. However, dissociation of biochemical and tumor-supressive effects of somatostatin analogs was also noted. We represent the female patient who showed reduction of the GH levels from 34.3 to 3.1 ng/ml and IGF-1 levels from 796 to 415 ng/ml (the gender and age upper normal limit 262 ng/ml) within 36 months treatment with maximum doses of somatostatin analogs (octreotide LAR 40 mg). Despite the lack of biochemical control of acromegaly, progressive decrease of tumor volume by 44 – 64 – 73% from initial volume (during 12 – 24 – 36 months of treatment) was noted. This case shows that it is possible to expect considerable reduction of somatotropinoma volume during treatment with somatostatin analogs even without achievement of complete control over GH and IGF-1 secretion.

About the authors

A. V. Dreval’

Moscow Regional Research and Clinical Institute (MONIKI); 61/2 Shchepkina ul., Moscow, 129110, Russian Federation

Email: fake@neicon.ru
MD, PhD, Professor, Head of the Department of Therapeutic Endocrinology, MONIKI Россия

I. A. Ilovayskaya

Moscow Regional Research and Clinical Institute (MONIKI); 61/2 Shchepkina ul., Moscow, 129110, Russian Federation

Author for correspondence.
Email: irena.ilov@yandex.ru
PhD, Assistant Professor, senior scientific worker, Department of Therapeutic Endocrinology, MONIKI Россия

Yu. G. Pokramovich

Moscow Regional Research and Clinical Institute (MONIKI); 61/2 Shchepkina ul., Moscow, 129110, Russian Federation

Email: fake@neicon.ru
physician, Department of Therapeutic Endocrinology, MONIKI Россия

G. A. Stashuk

Moscow Regional Research and Clinical Institute (MONIKI); 61/2 Shchepkina ul., Moscow, 129110, Russian Federation

Email: fake@neicon.ru

MD, PhD, chief scientific worker, Department of X-ray Diagnostics, MONIKI

Россия

R. S. Tishenina

Moscow Regional Research and Clinical Institute (MONIKI); 61/2 Shchepkina ul., Moscow, 129110, Russian Federation

Email: fake@neicon.ru

MD, PhD, Professor, Head of the Chemical and Hormonal Laboratory,
MONIKI

Россия

References

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Copyright (c) 2014 Dreval’ A.V., Ilovayskaya I.A., Pokramovich Y.G., Stashuk G.A., Tishenina R.S.

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