Aim To investigate the effects of mm LDL on the up-regulation of α1receptors in moues mesenter-ic arteries. Methods Mice tail intravenous injection of mm LDL was used. Vitro sensitive myograph was employed to examine Noradrenaline( NA) induced vascular contraction on mice mesenteric artery,and the m RNA and protein expressions of α1and α2receptors were analyzed by real-time PCR and Western blot,respectively. Results mm LDL significantly increased NA induced concentration-contractile curve,and the data of Em...