title: Acute and subchronic antihyperglycemic activities of Bowdichia virgilioides roots in non-diabetic and diabetic rats.
abstract: OBJECTIVE
  The present study was undertaken to evaluate the acute and subchronic antihyperglycemic effects of methanolic extract of Bowdichia virgilioides root bark of B. virgilioides in streptozotocin (STZ)-induced diabetic rats.
  
  
  METHODS
  The extract (100, 250 or 500 mg/kg) was orally administered to male Wistar diabetic (STZ, 42 mg/kg i.v.) and non-diabetic rats into two main protocols: (i) subchronic experiments, where animals were treated for 21 days with B. virgilioides extract and the following parameters were evaluated: Body weight, fluid and food intake (determined daily), urinary glucose and urea (every 3 days) and glycemia (every 5 days). At the end of the experimental period, skeletal muscles (extensor digitorum longus [EDL] and soleus), retroperitoneal and epididymal white adipose tissues were collected and weighed; liver samples were used for the determination of the lipid and glycogen contents; (ii) acute experiments, which evaluated the alterations on fasting and post-prandial glycemia and on glucose tolerance using the oral glucose tolerance test (OGTT).
  
  
  RESULTS
  In subchronic experiments, the treatment with B. virgilioides extract did not change any parameter evaluated in diabetic and non-diabetic animals. On fasting and post-prandial glycemia, the extract treatment did not promote changes in the glycemia values in diabetic or non-diabetic animals. In OGTT, the treatment with 500 mg/kg B. virgilioides extract reduced the hyperglycemia peak after a glucose overload, when compared with non-treated diabetic animals, resulting in a lower area under curve.
  
  
  CONCLUSIONS
  The results of our work indicate that B. virgilioides root extract promotes an acute antihyperglycemic effect in STZ-diabetic rats; this effect probably occurs through an inhibition of the intestinal glucose absorption. The continuity of the research is necessary to elucidate these possibilities.
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Ana Carolina Mazei
authors.initials: AC
authors.lastname: Silva
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Maísa Pavani
authors.initials: MP
authors.lastname: Dos Santos
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Suélem Aparecida
authors.initials: SA
authors.lastname: de França
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Virginia Claudia
authors.initials: VC
authors.lastname: da Silva
authors.affiliation: Department of Science Education, Federal University of Paraná, Coastal Sector, Matinhos, Paraná, Brazil.
authors.forename: Luiz Everson
authors.initials: LE
authors.lastname: da Silva
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Uir Santana
authors.initials: US
authors.lastname: de Figueiredo
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Evandro Luiz
authors.initials: EL
authors.lastname: Dall'Oglio
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Paulo Teixeira de Sousa
authors.initials: PT
authors.lastname: Júnior
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Carbene França
authors.initials: CF
authors.lastname: Lopes
authors.affiliation: Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University, Araraquara, São Paulo, Brazil.
authors.forename: Amanda Martins
authors.initials: AM
authors.lastname: Baviera
authors.affiliation: Department of Chemistry, Federal University of Mato Grosso, Cuiabá, Mato Grosso, Brazil.
authors.forename: Nair Honda
authors.initials: NH
authors.lastname: Kawashita
keywords: Antihyperglycemic effect; Bowdichia virgilioides; antihyperglycemic plants; fabaceae; medicinal plants