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[A retrospective study on enzyme replacement therapy in patients with Gaucher disease].

AbstractOBJECTIVE:
Gaucher disease is the most common lysosomal storage disorder. A deficiency of beta-glucocerebrosidase causes accumulation of the glucocerebroside in macrophages throughout the body. This study summarizes the effects of enzyme replacement therapy (ERT) with Imiglucerase in children with Gaucher disease.
METHODS:
Data from 72 patients (46 were male and 26 female, age ranged from 16 months to 22 years, median 8 years and 8 months) who were treated in the hospital between May 1999 and October 2005 were collected and analyzed, 57 of the patients had type 1 Gaucher disease, 2 patients with type 2, and 13 patients with type 3. Twenty-two patients had undergone total splenectomy. Imiglucerase was given at an initial dose 60 U/kg body weight by intravenous infusion every 2 weeks. The dose was reduced to 45 U/kg when they had achieved the specified therapeutic goals after 2 years. Clinical outcome data of Imiglucerase treatment were collected using routine Gaucher clinical measures, including growth, hematology, liver and spleen 3-dimensional measurements, and skeletal assessments every 3 - 6 months.
RESULTS:
Three patients were lost to follow-up, 4 patients died, and 65 patients continued to receive the therapy. Hemoglobin and platelet levels of the patients with intact spleen increased most rapidly from the first 12 months of ERT (P < 0.01). Hemoglobin level of the patients who had undergone splenectomy determined at 30 months of treatment was higher than that of baseline (P < 0.01), but platelet levels were not significantly different (P > 0.05). The volumes of the liver decreased after the 6 months of ERT, decreased in average by (39 +/- 17)% at 24 months (P < 0.01). The volumes of spleen decreased after the 12 months of ERT by (59 +/- 21)% at 24 months (P < 0.01). During the first 12 month, the height and weight of the patients who were 2 - 12 years old increased (8.6 +/- 4.3) cm and (2.6 +/- 1.7) kg, respectively, and those of the patients who were 12 - 18 years old increased (5.2 +/- 3.9) cm and (4.5 +/- 3.3) kg, separately. Bone pain reported by 16 patients relieved after 3 months of treatment. But radiological evidence of bone disease did not change. The signs and symptoms of CNS involvement in patients with type 2 and type 3 disease were not improved. No serious adverse events were reported.
CONCLUSIONS:
ERT with Imiglucerase could improve the quality of life of the patients with Gaucher disease by ameliorating the Gaucher disease-associated anemia, thrombocytopenia, organomegaly, growth retardation and bone pain.
AuthorsYan-long Duan, Yong-hong Zhang, Yan Zang, Hui-ping Shi, Wei-min Zhang, Ya-mei Hu
JournalZhonghua er ke za zhi. Chinese journal of pediatrics (Zhonghua Er Ke Za Zhi) Vol. 44 Issue 9 Pg. 653-6 (Sep 2006) ISSN: 0578-1310 [Print] China
PMID17217655 (Publication Type: English Abstract, Journal Article)
Chemical References
  • Recombinant Proteins
  • Glucosylceramidase
  • imiglucerase
Topics
  • Adolescent
  • Anemia (enzymology)
  • Child
  • Child, Preschool
  • Enzyme Replacement Therapy (adverse effects, methods)
  • Female
  • Gaucher Disease (drug therapy, enzymology, physiopathology)
  • Glucosylceramidase (administration & dosage, adverse effects, deficiency, therapeutic use)
  • Growth Disorders (enzymology)
  • Hepatomegaly (enzymology)
  • Humans
  • Infant
  • Male
  • Recombinant Proteins (therapeutic use)
  • Retrospective Studies
  • Splenomegaly (enzymology)
  • Thrombocytopenia (enzymology)
  • Treatment Outcome
  • Young Adult

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