Identification of plant extracts with potential antidiabetic properties: effect on human peroxisome proliferator-activated receptor (PPAR), adipocyte differentiation and insulin-stimulated glucose uptake - Christensen, K B; Minet, A; Svenstrup, H; Grevsen, K; Zhang, H; Schrader, E; Rimbach, G; Wein, S; Wolffram, S; Kristiansen, K (Phytother Res, 2009)