Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate.
The anti-oxidant drug N-acetylcysteine (NAC) has been proposed as adjunctive treatment in severe falciparum malaria. However, this might inhibit the anti-malarial drug action of the artemisinins, which are thought to exert their parasitocidal action through oxidative damage. We studied the interacti...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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2007
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| _version_ | 1826281600882573312 |
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| author | Arreesrisom, P Dondorp, A Looareesuwan, S Udomsangpetch, R |
| author_facet | Arreesrisom, P Dondorp, A Looareesuwan, S Udomsangpetch, R |
| author_sort | Arreesrisom, P |
| collection | OXFORD |
| description | The anti-oxidant drug N-acetylcysteine (NAC) has been proposed as adjunctive treatment in severe falciparum malaria. However, this might inhibit the anti-malarial drug action of the artemisinins, which are thought to exert their parasitocidal action through oxidative damage. We studied the interaction between NAC and artesunate as well as quinine in an in vitro drug sensitivity assay. Combination with NAC reduced the parasitocidal effect of artesunate only within the first 6 h of incubation, whereas no interaction was observed with quinine. Pre-incubation of P. falciparum with NAC resulted in a similar inhibitory effect on the anti-malarial activity of artesunate, whereas no inhibition was observed when NAC was added 2 h after parasite exposure to artesunate. Assessment of parasite maturation inhibition by the standard Giemsa's staining was in accordance with the use of a vital staining. The results herein caution the use of adjunctive treatment for malaria infection. Combination of antagonistic drugs may lead to adverse effects. |
| first_indexed | 2024-03-07T00:31:14Z |
| format | Journal article |
| id | oxford-uuid:7fde7713-6401-40bf-bdf4-d3ff313c70e6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T00:31:14Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:7fde7713-6401-40bf-bdf4-d3ff313c70e62022-03-26T21:19:38ZSuppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:7fde7713-6401-40bf-bdf4-d3ff313c70e6EnglishSymplectic Elements at Oxford2007Arreesrisom, PDondorp, ALooareesuwan, SUdomsangpetch, RThe anti-oxidant drug N-acetylcysteine (NAC) has been proposed as adjunctive treatment in severe falciparum malaria. However, this might inhibit the anti-malarial drug action of the artemisinins, which are thought to exert their parasitocidal action through oxidative damage. We studied the interaction between NAC and artesunate as well as quinine in an in vitro drug sensitivity assay. Combination with NAC reduced the parasitocidal effect of artesunate only within the first 6 h of incubation, whereas no interaction was observed with quinine. Pre-incubation of P. falciparum with NAC resulted in a similar inhibitory effect on the anti-malarial activity of artesunate, whereas no inhibition was observed when NAC was added 2 h after parasite exposure to artesunate. Assessment of parasite maturation inhibition by the standard Giemsa's staining was in accordance with the use of a vital staining. The results herein caution the use of adjunctive treatment for malaria infection. Combination of antagonistic drugs may lead to adverse effects. |
| spellingShingle | Arreesrisom, P Dondorp, A Looareesuwan, S Udomsangpetch, R Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate. |
| title | Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate. |
| title_full | Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate. |
| title_fullStr | Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate. |
| title_full_unstemmed | Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate. |
| title_short | Suppressive effects of the anti-oxidant N-acetylcysteine on the anti-malarial activity of artesunate. |
| title_sort | suppressive effects of the anti oxidant n acetylcysteine on the anti malarial activity of artesunate |
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