Fator neurotrófico derivado do cérebro na síndrome da fibromialgia

• Ano de defesa: 2008
• Autor(a) principal: Haas, Lisete
• Orientador(a): Lara, Diogo Rizzato
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: FIBROMIALGIA; DOR; DEPRESSÃO; ANTIDEPRESSIVOS
• Link de acesso: http://hdl.handle.net/10923/1279

Brain-derived neurotrophic factor (BDNF) is an endogenous protein involved in neuronal survival and synaptic plasticity of the central and peripheral nervous system. BDNF has been studied in pathological situations, including depression and chronic pain conditions, and appears to modulate nociceptive sensory inputs and pain hypersensitivity. Serum BDNF levels have been shown to be increase in serum and CSF of patients with fibromyalgia (FM). In the present study, we assessed serum BDNF levels in 30 female patients with FM and 30 healthy ageand gender-matched volunteers using an enzyme immunoassay. FM patients showed numerically higher levels of BDNF (FM= 167. 1 ± 171. 2 ng/ml) when compared with the control group (control = 113. 8 ± 149. 6 ng/ml), close to the limit of statistical significance (p=0. 056; Mann-Whitney test). However, only 6 out of 30 controls presented superior values to the median (15/15) of the patients with fibromyalgia (129 ng/ml) (p = 0. 029, Fisher exact test). There was no correlation between serum BDNF levels and age, disease duration, pain score, number of pain points and HAM-D score. There was no significant difference in BNDF levels regarding current antidepressant treatment. Our results confirm previous findings of increased serum BDNF levels in patients with FM, suggesting that BDNF may be involved in the pathophysiology of Fibromyalgia, despite high levels of depression.