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MEDICC Review 2012-Jan

Use of Cuban recombinant human erythropoietin in Parkinson's disease treatment.

Yalnız qeydiyyatdan keçmiş istifadəçilər məqalələri tərcümə edə bilərlər
Giriş / Qeydiyyatdan keçin
Bağlantı panoya saxlanılır
Ivonne Pedroso
María Luisa Bringas
Anubis Aguiar
Lilia Morales
Mario Alvarez
Pedro A Valdés
Lázaro Alvarez

Açar sözlər

Mücərrəd

BACKGROUND

Recombinant human erythropoietin is used primarily to treat anemia. There is evidence of its neuroprotective capacity from preclinical studies in Parkinson's disease and other neurodegenerative diseases. Recombinant human erythropoietin produced in Cuba (ior-EPOCIM) is registered and approved for use in humans in Cuba and in a number of other countries.

OBJECTIVE

Assess safety and possible neuroprotective effect of ior-EPOCIM in a group of Parkinson's disease patients.

METHODS

A three-phase exploratory study (proof of concept) was conducted from August 2008 to April 2009: preliminary assessment, treatment (weeks 1-5), and post-treatment (weeks 6-35). Participants were 10 Parkinson's disease patients (8 men, 2 women) from the outpatient clinic at the International Neurological Restoration Center, all at least one year post onset, aged 47-65 years. The ior-EPOCIM was administered subcutaneously in a once-weekly dose (60 IU/kg body weight) for five weeks. Therapy with patients' antiparkinsonian drugs was maintained throughout the study, except during motor examination, conducted following a 12-hour withdrawal (OFF condition). Safety was evaluated primarily by recording adverse events (by intensity and causality) from start of treatment until the study's completion. Hematological parameters and blood pressure were also measured because of their direct relationship to the medication's action. To evaluate possible neuroprotective activity, variables were included related to patients' motor function and cognitive and affective status, measured using internationally recognized scales. All variables were evaluated before, during and after treatment. Data were processed using a fixed-effects linear model, with a repeated-measures design (significance level p ≤ 0.05).

RESULTS

Three patients experienced mild adverse events (precordial discomfort and hypertension in one; leg fatigue in another; renal colic in a third), with a possible causal relationship in the first two that was neither life threatening nor required hospitalization. Hemoglobin was the only hematological parameter that showed a growing and significant increase (p < 0.001), but without reaching pathological levels. The other variables presented clinically positive and statistically significant changes compared to pretreatment assessment: motor function (p < 0.001), cognitive status (p < 0.001) and mood (p = 0.013). CONCLUSIONS At the dosage used, ior-EPOCIM was safe and well tolerated in these Parkinson's disease patients. Further studies are needed to corroborate these results and evaluate the medication's possible neuroprotective effect. KEYWORDS Parkinson disease, erythropoietin, recombinant proteins, neuroprotective agents, clinical trial, safety, ior-EPOCIM, Cuba.

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