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Doctoral Thesis
Document
Author
Full name
Lia Rachel Chaves do Amaral Pelloso
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2005
Supervisor
Committee
Posso, Irimar de Paula (President)
Ashmawi, Hazem Adel
Capelozzi, Vera Luiza
Corrêa, Claudio Fernandes
Lemônica, Lino
Title in Portuguese
Efeito dos anticonvulsivantes gabapentina e carbamazepina associados ou não ao antidepressivo amitriptilina no controle da dor neuropática em pacientes portadores de Hanseníase
Keywords in Portuguese
Amitriptilina/uso terapêutico
Anticonvulsivos
Antidepressivos/uso terapêutico
Dor/terapia
Hanseníase
Abstract in Portuguese
Este é um estudo clínico, prospectivo, aleatório, e duplamente encoberto realizado em 80 doentes hansênicos de ambos os sexos e com idade variando entre 18 e 65 anos, portadores de dor neuropática. Os pacientes foram divididos em 4 grupos: Grupo G: pacientes tratados com gabapentina na dose de 400mg diários, Grupo C: pacientes tratados com carbamazepina na dose de 200 mg diários, Grupo GA: pacientes tratados com a associação de gabapentina 400 mg e amitriptilina 25 mg diários e Grupo CA: pacientes tratados com a associação de carbamazepina 200 mg e amitriptilina 25 mg diários e avaliados durante 4 meses quanto a intensidade da dor, consumo de prednisona, necessidade do uso de talidomida, queixa de queimação, parestesia, sensação de choque e alteração da sensibilidade, bem como da necessidade de realização de neurólise e eventos adversos relacionados ao tratamento. Os resultados permitiram verificar que o valor médio de intensidade de dor foi semelhante em todos os grupos no momento da inclusão e no momento de encerramento do estudo, e a diminuição da dor foi semelhante em todos os grupos, não havendo superioridade de nenhum dos esquemas terapêuticos sobre o outro, portanto a carbamazepina isolada ou associada a amitriptilina e a gabapentina isolada ou associada a amitriptilina foram igualmente eficientes na redução da dor que os pacientes apresentavam no momento de inclusão no estudo, porém a duração da dor, em dias, foi maior no grupo medicado com a gabapentina isolada, foi menor e igual nos grupos medicados com a carbamazepina e com a gabapentina associada a amitriptilina e teve uma duração intermediária no grupo medicado com a carbamazepina associada a amitriptilina, embora a diferença não tenha sido significativa pela análise estatística. Todos os fármacos foram igualmente eficazes na redução do consumo da prednisona e na necessidade do uso de talidomida. A queixa de queimação, de parestesia, de sensação de choque e de alteração da sensibilidade, bem como da necessidade de realização de neurólise foi semelhante nos quatro grupos do estudo e a incidência de eventos adversos relacionados ao tratamento também foi semelhante em todos os grupos
Title in English
The effects of the antiepiletic drugs gabapentin, carbamazepine, either used in association with amitriptyline or not, in the control of neuropathic pain in Hansen disease patients
Keywords in English
Amitriptyline
Anticonvulsivants
Antidrepressives/therapeutic use
Leprosy
Pain/therapy
Abstract in English
This study is a clinical trial. During the present study a prospective controlled four-way crossover double-blind randomized protocol was followed. Eighty hansen's patients, male and female, aged 18 to 65, with neuropathic pain took part. The patients were divided into 4 groups as follows: Group G -patients treated with a gabapentin 400 mg dose daily; Group C - patients treated with a carbamazepine 200 mg dose daily; Group GA - patients treated with a gabapentin 400 mg dose in association with an amitriptyline 25 mg daily, Group CA - patients treated with a carbamazepine 200 mg dose in association with an amitriptyline 25 mg daily. All four groups were assessed for four months taking into account pain intensity, prednisone consumption, the amount of thalidomide needed, burn sensation complaints, paresthesia, numbness, shock sensitivity and alterations to sensitivity, as well as neurolysis and side effects related to the treatment. The results of the study demonstrated that intensity of pain was similar in patients belonging to all four groups, both at the moment of inclusion and at the end of the study, and the reduction in the intensity of pain was also similar in all groups, without any report of superior effectiveness in any of the four groups studied. Therefore, the gabapentin and the carbamazepine, alone or in association with amitriptyline, proved to be equally effective in the reduction of the pain the patients felt at the moment of their inclusion to the present study. On the other hand, during the assessment of the duration of pain in days we noticed that it lasted longer in the group treated only with gabapentin, it was shorter or the same in the groups treated with carbamazepine and with gabapentin in association with an amitriptyline, and was considered intermediary in the group treated with carbamazepine in association with an amitriptyline, even though the difference was not considered significant in terms of statistical analysis. All the substances proved to be equally effective in the reduction of the consumption of prednisone and the need of thalidomide. The reports on burn sensation complaints; paresthesia, numbness, shock sensitivity and alterations to sensitivity, as well as neurolysis were also very similar in the four groups pertaining this study, as well as the side effects related to the treatment which were similar in all four groups
 
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Publishing Date
2007-02-06
 
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