RESUMO
Anemia is a common cause of morbidity and disease and reduces the quality of life. This study examined the effect of a combination treatment (AAC) using Astragali radix (AMW) and Angelicae radix (AGW) in cyclophosphamide (CYP)-induced anemic rats on erythropoietin (EPO) expression and hematological parameters. Male 4-week-old Sprague-Dawley rats were divided into five groups with or without CYP-induced anemia and individual or the combined herbal treatments according to the experimental protocol. After treatment, reverse transcription-polymerase chain reaction was used to evaluate the effects of AAC on erythropoietin expression, and blood and serological parameters were measured. The EPO mRNA levels were lower in the CYP-treated group, compared to the normal group, and higher in the AAC-treated group. In the CYP-treated group, the serum iron concentration, total iron-binding capacity, and vitamin B(12) level were lower, but these were normal or almost normal in the AAC-treated group. The CYP-treated group gained less weight than the normal group, but weight gain was partially normalized in the AAC group. The feed efficiency ratio was lowest in the CYP group, but the differences were not significant. The numbers of red blood cells, white blood cells, and platelets, the hematocrit, and the hemoglobin level were measured. The results revealed a reduced number of blood cells in the CYP-treated group, whereas the AAC-, AMW-, and AGW-treated groups showed significantly enhanced blood cell numbers compared to the CYP-treated control group and the AAC-treated group. AAC enhanced EPO mRNA expression in the CYP-induced anemic rat and improved the hematological parameters and vitamin B(12) status.
Assuntos
Anemia/tratamento farmacológico , Angelica , Astragalus propinquus , Medicamentos de Ervas Chinesas/uso terapêutico , Eritropoetina/metabolismo , Expressão Gênica/efeitos dos fármacos , Fitoterapia , Anemia/induzido quimicamente , Animais , Antineoplásicos Alquilantes/efeitos adversos , Contagem de Células Sanguíneas , Células Sanguíneas/efeitos dos fármacos , Células Sanguíneas/metabolismo , Ciclofosfamida/efeitos adversos , Quimioterapia Combinada , Medicamentos de Ervas Chinesas/farmacologia , Ingestão de Energia/efeitos dos fármacos , Eritropoetina/genética , Ferro/sangue , Masculino , Raízes de Plantas , RNA Mensageiro/metabolismo , Ratos , Ratos Sprague-Dawley , Vitamina B 12/sangue , Aumento de Peso/efeitos dos fármacosRESUMO
Nelumbo nucifera semen (NNS) is a traditional herb with anti-diarrheal, anti-ganacratia, and tranquilizer-like pharmacological activities. In this study, we examined the anti-amnesic effect of NNS on rats with scopolamine-induced amnesia. Passive avoidance tests, acetylcholinesterase (ACHE) activity, and choline acetyltransferase (CHAT) expression were used to evaluate the NNS anti-amnesic effects. The rats were divided into five groups: the normal group, scopolamine-treated group (1mg/kg; control), NNS (1g/kg) and scopolamine (1mg/kg) co-treatment group, and the ARICEPT (1mg/kg) and scopolamine (1mg/kg) co-treatment group (positive control). The rats were administered the compounds orally for 14 days. The latency time of passive avoidance significantly increased by 54% in the NNS-treated group compared to the scopolamine-treated group. The ACHE activity in the NNS-treated group significantly decreased to 7.35% than that of the control group. CHAT-positive neurons increased by 51.02% in the NNS group compared to the control group. These results suggest that NNS extract improves scopolamine-induced dementia by inhibiting ACHE activity and inducing CHAT expression.
Assuntos
Colina O-Acetiltransferase/biossíntese , Memória/efeitos dos fármacos , Nelumbo/química , Nootrópicos/farmacologia , Extratos Vegetais/farmacologia , Escopolamina/farmacologia , Animais , Aprendizagem da Esquiva/efeitos dos fármacos , Hipocampo/enzimologia , Masculino , Neurônios/enzimologia , Ratos , Ratos Wistar , Tempo de Reação , Septo do Cérebro/enzimologiaRESUMO
Memory enhancement is a matter of concern in general, and in particular to people suffering from cognitive dysfunction. In this study, we investigated the effect of Nelumbo nucifera rhizome extract on learning and memory function. A step-through passive avoidance test was performed with Wistar rats. In addition, immunohistochemistry was used to investigate cell proliferation and differentiation in the dentate gyrus of the hippocampus. The methanol extract of N. nucifera rhizome (MNR) resulted in significant improvements of memory functions and neurogenesis in the dentate gyrus. In the passive avoidance test, the retention time of MNR-treated rats was significantly longer than that of controls. Immunohistochemical analyses using BrdU, Ki-67, and DCX showed significantly increased cell proliferation and cell differentiation in the dentate gyrus. These results suggest that N. nucifera rhizome extract may improve learning and memory with enhancing neurogenesis in the DG of the hippocampus.
