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Chronic treatment with carvacrol improves passive avoidance memory in a rat model of Parkinson's disease / O tratamento com carvacrol melhora a memória de esquiva passiva em um modelo da doença de Parkinson em ratos
Haddadi, Hossein; Rajaei, Ziba; Alaei, Hojjatallah; Shahidani, Somayeh.
  • Haddadi, Hossein; Isfahan University of Medical Sciences. School of Medicine. Department of Physiology. Isfahan. IR
  • Rajaei, Ziba; Isfahan University of Medical Sciences. School of Medicine. Department of Physiology. Isfahan. IR
  • Alaei, Hojjatallah; Isfahan University of Medical Sciences. School of Medicine. Department of Physiology. Isfahan. IR
  • Shahidani, Somayeh; Isfahan University of Medical Sciences. School of Medicine. Department of Physiology. Isfahan. IR
Arq. neuropsiquiatr ; 76(2): 71-77, Feb. 2018. graf
Article in English | LILACS | ID: biblio-888359
ABSTRACT
ABSTRACT The present study investigated the effects of carvacrol on motor and memory deficits as well as hyperalgesia in the 6-OHDA-lesioned rat model of Parkinson's disease. The animals were subjected to unilateral microinjection of 6-OHDA into the medial forebrain bundle and treated with carvacrol (25, 50 and 100 mg/kg, ip) for six weeks after surgery. The 6-OHDA-lesioned rats showed contralateral rotations towards the lesion side, which was accompanied by learning and memory deficits in a passive avoidance test and a decrease in tail withdrawal latency in a tail flick test at the end of week 6. The results also showed that treatment with carvacrol at a dose of 25 mg/kg ameliorated memory deficits, with no effect on rotations and hyperalgesia in lesioned rats. In conclusion, carvacrol improves memory impairments in rats with Parkinson's disease; therefore, it may serve as an adjunct therapy for the alleviation of memory deficits in Parkinson's disease patients.
RESUMO
RESUMO O presente estudo investigou os efeitos do carvacrol nos déficits motores e de memória, bem como na hiperalgesia, em um modelo da doença de Parkinson (DP) em ratos com lesões 6-OHDA. Os animais foram submetidos a microinjeção unilateral de 6-OHDA no feixe mediano do prosencéfalo e tratados com carvacrol (25, 50 e 100 mg / kg, ip) durante 6 semanas após a cirurgia. Os ratos com lesões 6-OHDA mostraram rotações contralaterais para o lado da lesão, que foram acompanhadas de déficits de aprendizagem e de memória em um teste de evitação passiva, e de uma diminuição da latência de retirada da cauda em um teste de cauda no final da semana 6. Os resultados também mostraram que o tratamento crônico com carvacrol a uma dose de 25 mg / kg aliviou os déficits de memória, sem efeito sobre rotações e hiperalgesia em ratos lesados. Em conclusão, o carvacrol melhora a deficiência de memória em ratos com DP e, portanto, pode servir como uma terapia complementar para aliviar os déficits de memória em pacientes com DP.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Parkinson Disease / Monoterpenes / Memory Disorders / Memory, Short-Term / Antiparkinson Agents Type of study: Evaluation studies / Prognostic study Limits: Animals Language: English Journal: Arq. neuropsiquiatr Journal subject: Neurology / Psychiatry Year: 2018 Type: Article Affiliation country: Iran Institution/Affiliation country: Isfahan University of Medical Sciences/IR

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Full text: Available Index: LILACS (Americas) Main subject: Parkinson Disease / Monoterpenes / Memory Disorders / Memory, Short-Term / Antiparkinson Agents Type of study: Evaluation studies / Prognostic study Limits: Animals Language: English Journal: Arq. neuropsiquiatr Journal subject: Neurology / Psychiatry Year: 2018 Type: Article Affiliation country: Iran Institution/Affiliation country: Isfahan University of Medical Sciences/IR