Endocrinol Metab > Volume 20(4); 2005 > Article
Journal of Korean Endocrine Society 2005;20(4):344-352.
DOI: https://doi.org/10.3803/jkes.2005.20.4.344    Published online August 1, 2005.
Efficacy of Octreotide LAR in Acromegalic Patients.
Ji Youn Kim, Jae Hwan Jee, Chan Ho Yoon, Yun Jae Chung, Byung Wan Lee, Gun Yong Cho, Sang Young Kim, Jae Hoon Chung, Yong Ki Min, Myung Shik Lee, Moon Kyu Lee, Kwang Won Kim
Division of Endocrinology and Metabolism, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Abstract
BACKGROUND
Octreotide(OC)-LAR is a long-acting preparation of octreotide which has been effectively used to suppress GH/IGF-1 hypersecretion in acromegalic patients. The clinical response, biochemical outcomes, and safety of OC-LAR were evaluated in 27 active acromegalic patients. METHOD: 27patients with an active disease status (according to the clinical picture, GH >5microgram/L and elevated age-matched IGF-1), and previously treated with bromocriptine after surgery, comprised the study population. OC-LAR was given(20mg, i.m., every 4 week for 3 injections, then the doses were titrated individually) and the acromegalic symptoms and adverse reactions recorded. The serum levels of GH and IGF-1 were evaluated every 12 week. The acromegalic symptoms including headache, fatigue and arthralgia, improved in all patients. RESULTS: Gastrointestinal side effects were transient and mild. The levels of GH significantly decreased, from 8.9+/-3.5 to 2.9+/-2.2 microgram/L at 12 weeks(P<0.001, vs. baseline), to 2.9+/-2.1microgram/L after 24 weeks(P<0.001) and to 2.5 +/-1.3microgram/L at 48 weeks(P<0.001). The levels of IGF-1 significantly decreased, from 753.7+/-213.6 to 429.7+/-253.4 microgram/L at 12 weeks(P<0.001, vs. at baseline), to 405.7+/-213.3microgram/L at 24 weeks(P <0.001) and to 348.9+/-144.7microgram/L at 48 weeks(P<0.001). The safelevel of GH is less than 2.5microgram/L and normal age-matched IGF-1 levels were achieved in 63 and 52% of the patients, respectively. CONCLUSION: Octreotide-LAR was well tolerated and effective as an adjuvant treatment in lowering the levels of GH and IGF-1 in active acromegalic patients.
Key Words: Octreotide-LAR (OC-LAR), Acromegaly, Somatostatin analogue


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