The effect of crude ethanol extract and fractions of Hyptidendron canum (Pohl ex Benth) Harley on the hepatopancreas of Oreochromis niloticus L
Biol. Res
;
42(2): 153-162, 2009. ilus
Artigo
em Inglês
| LILACS
| ID: lil-524885
ABSTRACT
Hyptidendron canum (Pohl ex Benth.) Harley is a native tree of the Brazilian Savannah. The fish Oreochromis niloticus L. was used as an experimental model to determine the bioactivity of the crude ethanol extract as well as ethyl acetate, hexanic and chloroform fractions obtained from its leaves. The plant ethanol extract and fractions were administered to the fish orally with their feed. Twenty four hours later, the fish were sacrificed and their livers dissected, fixed in neutral formalin, embedded in paraffin and sectioned. Histological analyses were performed using Masson's trichrome and Haematoxylin-Eosin. Histochemical studies were performed using Feulgen, PAS (Periodic Acid Schiff) and PAS + salivary amylase and Sudan IV stain. The qualitative analysis of the material showed that both the crude ethanol extract and the fractions from H. canum induced vasoactive activity, causing vasodilation and vascular congestion, and the hexanic fraction also caused an apparent proliferation of capillaries. Hepatopancreas toxicity was evident through inflammatory processes. Pancreatic (chloroform fraction) and hepatic alterations, hemorrhagic spots and necroses were observed in fish treated with-ethanol extract and fractions. This study is the first description of the biologic action of the crude ethanol extract and the hexane, ethyl acetate and chloroform fractions in fish.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Extratos Vegetais
/
Lamiaceae
/
Ciclídeos
/
Hepatopâncreas
Tipo de estudo:
Pesquisa qualitativa
Limite:
Animais
Idioma:
Inglês
Revista:
Biol. Res
Assunto da revista:
Biologia
Ano de publicação:
2009
Tipo de documento:
Artigo
País de afiliação:
Brasil
Instituição/País de afiliação:
Federal University of Goiás/BR
/
ICB IV Institute of Biological Science/BR
/
School of Medicine Veterinary/BR
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