In vitro immune potentials of a water-soluble polysaccharide extract from Dioscorea opposita planted in Henan Province, China
Pakistan Journal of Pharmaceutical Sciences. 2017; 30 (4): 1383-1388
em Inglês
| IMEMR
| ID: emr-189710
ABSTRACT
Dioscorea opposita is an edible and medicinal plant available in many areas of China. This study aimed to assess in vitro immune potentials of a water-soluble polysaccharide extract from D. opposita planted in Henan Province, China. In vitro effects of the extract on three immune cells [macrophages, natural killer cells and splenocytes] from mice and secretion of eight immune-related molecules in macrophages and splenocytes were evaluated. In total, the extract exhibited a dose-dependent manner on these immunological responses. The extract at dose level of 50ug/ml enhanced respective splenocyte proliferation, macrophage phagocytosis, and natural killer cell activity by 150%, 18% and 47%, increased secretion of interleukin-2 and interferon-y [from 41.4 and 24.6 pg/ml to 48.8 and 91.5 pg/ml, respectively] but decreased secretion of interleukin-4 [from 38.9 to 27.9 pg/ml] in splenocytes. The extract at the same dose level also stimulated inducible nitric oxide synthase and lysozyme in macrophages, and enhanced secretion of interleukin-6, interleukin-1 p and tumor necrosis factor-a [from 26.6, 73.4 and 39.6 pg/ml to 60.2, 131.0 and 144.7 pg/ml, respectively]. It is concluded that water-soluble polysaccharides from D. opposita have immune potentials to the body, via activating immune cells and regulating the secretion of immune-related molecules
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Índice:
IMEMR (Mediterrâneo Oriental)
Assunto principal:
Polissacarídeos
/
Técnicas In Vitro
/
Extratos Vegetais
/
Células Matadoras Naturais
/
Estruturas Vegetais
/
Imunidade
/
Macrófagos
/
Camundongos
Limite:
Animais
Idioma:
Inglês
Revista:
Pak. J. Pharm. Sci.
Ano de publicação:
2017
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