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Articles by N. Ouedraogo
Total Records ( 2 ) for N. Ouedraogo
  O. Da , M. Traore/ Coulibaly , R.S. Yerbanga , B. Koama , N. Ouedraogo , S. Tamboura , Z.P. Dakuyo , M.P. Sekhoacha , J.B. Nikiema , G.A. Ouedraogo , M.G. Matsabisa and J.B. Ouedraogo
  Saye is an antimalarial recipe containing Cochlospermum planchonii Hook. F. (Cochlospermaceae), Phyllanthus amarus Schumach and Thonn (Euphorbiaceae) and Cassia alata L. (Fabaceae). This study assessed the antiplasmodial and antioxidant activity of the aqueous extracts of the individual plants and their combinations. Extracts were assessed on Plasmodium berghei infected mice according to the 4 day suppressive test, for their total phenol contents according to Folin-Ciocalteu method and their antioxidant potential by FRAP assay and by the inhibition of ion induced lipid peroxidation in rat liver homogenate. Macerated extracts from Cochlospermum planchonii, Phyllantus amarus and Cassia alata gave 50.6, 46.3 and 44.9% inhibition of the parasites at 100 mg kg-1 body weight (b.wt.), respectively. At 250 mg kg-1 b.wt. the decocted extract of Cochlospermum planchoii gave 54% inhibition. Decocted extracts of the combinations Cassia alata+Phyllanthus amarus (2:1) and Phyllanthus amarus+Cochlospermum planchonii (2:1) reduced mice parasitemia by about 20-30% at 100 mg kg-1 b.wt. At the same dose, a 4.9-15.9% inhibition was observed with the decocted extract of Cassia alata+Cochlospermum planchonii (1:1) and the whole “Saye” but a higher effect of 43.7 to 50.3% was observed at 250 mg kg-1 b.wt. Phyllantus amarus extract exhibited the highest total phenol content (294 μg TAEs/mg). The highest content in flavonoids 43 μg QE/mg and the highest inhibition of lipid peroxidation (22.56%) were found for Cassia alata+Phyllanthus amarus (2:1) and the best reducing power (41.38 μmol TE/mg) for Saye. Saye appears as promising antioxidant and could be used as preventive agent in oxidative stress diseases such as malaria.
  G. Mahe , N. Ouedraogo , G. Leftheriotis , B. Vielle , J. Picquet and P. Abraham
  Aim: To compare symptoms and walking capacities of patients with and without diabetes reporting vascular-type claudication. Methods: We recorded self-reported maximal walking distance, maximal walking distance on treadmill test (3.2 km h−1, 10% slope), exercise transcutaneous oxygen pressure DROP index [limb transcutaneous oxygen pressure (TcpO2) changes from rest minus chest TcpO2 changes from rest] and symptoms on treadmill in 230 patients with diabetes and 982 patients without diabetes. Exercise-induced proximal and distal symptoms were analysed in the perspective of underlying proximal and distal ischaemia (DROP value < negative 15 mmHg). Results: Self-reported maximal walking distance did not differ between groups, whereas maximal walking distance on treadmill test was lower in patients with diabetes vs. patients without diabetes (261 ± 257 and 339 ± 326 m, respectively; P < 0.05 when adjusted for potential confounders). In patients with ischaemia, the number of ischaemic areas (proximal and/or distal on right and/or left) was comparable between the two groups. Patients with diabetes had more distal ischaemia than patients without diabetes (38 vs. 29%, respectively; P < 0.01), whereas proximal ischaemia was similar between groups. The prevalence of lower-limb exercise-related symptoms without ischaemia was comparable between groups. There were more symptoms other than lower-limb pain in patients with diabetes than patients without diabetes (29.6 vs. 18.3%, respectively; P < 0.01). Conclusions: Patients with diabetes show more severe limitation on the treadmill and more non-limb symptoms than patients without diabetes, although self-reported walking capacity is comparable between the two groups. Using TcpO2, we confirm that patients with diabetes reporting claudication show more distal ischaemia than patients without diabetes, with no difference at the buttock level. Treadmill testing is of interest in patients with peripheral artery disease and diabetes.
 
 
 
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