title: Beneficial effect of dose escalation and surgical debulking in patients with acromegaly treated with somatostatin analogs in a Romanian tertiary care center.
abstract: BACKGROUND
  Somatostatin analogs (SSA) are now considered standard therapy for acromegaly, as primary or adjunctive treatment after pituitary surgery.
  
  
  OBJECTIVE
  To evaluate the efficacy of SSA and the effect of dose escalation in non-operated patients with acromegaly as compared to patients treated after pituitary surgery in a Romanian tertiary care center.
  
  
  METHODS
  Retrospective study of 73 consecutively evaluated patients with acromegaly treated with SSA, divided into 2 groups: 11 patients (4M/7F, 21-62 years) with primary treatment and 62 patients (22M/40F, 21-68 years) treated after surgery. They received Octreotide LAR 20-30 mg i.m./28 days or Lanreotide SR 30 mg i.m./14/10/7 days. Random serum growth hormone (GH) was measured using IRMA, sensitivity 0.2-0.01 μg/L IGF-1 was measured using different assays and compared with ULN for age and sex.
  
  
  RESULTS
  Overall, random GH ≤2.5 μg/L was attained in 39 patients (53.4%) and optimal GH ≤1 ng/mL) in 30 patients (41%), while normal IGF-1 was recorded in 22/72 patients (30.5%). The final random GH ≤2.5 μg/L was achieved in 27.2% of non-operated patients (3/11) as compared with 58% (36/62) of patients treated medically after pituitary surgery, p<0.05. Escalation of doses of SSA applied in 43 patients improved the number of controlled patients by 5 (12.1%, p=0.059) and the number of optimally controlled patients by 9.7%. Of the 8 patients who switched from Lanreotide to Octreotide, 2 patients achieved GH normalization.
  
  
  CONCLUSIONS
  The rate of biochemical control via SSA treatment in patients with acromegaly could be improved by rise of the SSA dose or by debulking surgery. Occasionally, substituting one SSA for another may be of benefit.
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.|"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Monica Livia
authors.initials: ML
authors.lastname: Gheorghiu
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania. simona.galoiu@gmail.com.|"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania. simona.galoiu@gmail.com.
authors.forename: Simona
authors.initials: S
authors.lastname: Găloiu
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.
authors.forename: Mădălina
authors.initials: M
authors.lastname: Vintilă
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.
authors.forename: Mariana
authors.initials: M
authors.lastname: Purice
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.
authors.forename: Dan
authors.initials: D
authors.lastname: Hortopan
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.
authors.forename: Anda
authors.initials: A
authors.lastname: Dumitraşcu
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.|"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Mihail
authors.initials: M
authors.lastname: Coculescu
authors.affiliation: "C.I. Parhon" National Institute of Endocrinology, Bucharest, Romania.|"Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
authors.forename: Cătălina
authors.initials: C
authors.lastname: Poiană
mesh_terms: D000172:Acromegaly / Q000097:blood / Q000175:diagnosis / Q000209:etiology / Q000628:therapy*; D000236:Adenoma / Q000097:blood / Q000150:complications / Q000175:diagnosis / Q000628:therapy*; D000328:Adult; D000368:Aged; D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000009:adverse effects; D014408:Biomarkers, Tumor / Q000097:blood; D017024:Chemotherapy, Adjuvant; D065426:Cytoreduction Surgical Procedures / Q000009:adverse effects; D005260:Female; D049912:Growth Hormone-Secreting Pituitary Adenoma / Q000097:blood / Q000150:complications / Q000175:diagnosis / Q000628:therapy*; D019382:Human Growth Hormone / Q000097:blood; D006801:Humans; D007334:Insulin-Like Growth Factor I / Q000378:metabolism; D008297:Male; D008875:Middle Aged; D020360:Neoadjuvant Therapy; D010456:Peptides, Cyclic / Q000008:administration & dosage* / Q000009:adverse effects; D012189:Retrospective Studies; D012383:Romania; D013004:Somatostatin / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives*; D062606:Tertiary Care Centers; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D000970:Antineoplastic Agents; D014408:Biomarkers, Tumor; C583557:IGF1 protein, human; D010456:Peptides, Cyclic; C060347:lanreotide; D019382:Human Growth Hormone; D013004:Somatostatin; D007334:Insulin-Like Growth Factor I