Atorvastatin hemicalcium salt (Atorvastatin Calcium) is an HMG-CoA reductase inhibitor with oral activity. Atorvastatin hemicalcium salt is used to lower cholesterol.

HMG-CoA reductase:8 nM, MKN45 cells:2.1 µM, A549 cells:8.7 μM, SV-SMC (human) proliferation:0.39 μM

Briefly, SV-SMC from 5 different patients are seeded into 24-well cell culture plates at a density of 1×104?cells per well in full growth medium. Cells are incubated overnight and then quiesced in serum free medium for 3 days before transfer to full growth medium (10% FCS) containing 5 different statins (simvastatin, atorvastatin, fluvastatin, lovastatin, and pravastatin)at a range of concentrations. All statins are tested on cells from each individual patient. Medium and drugs are replaced after 2 days, and viable cell numbers are determined in triplicate wells after 4 days using Trypan Blue and a hemocytometer. The increase in cell number is calculated by subtracting the starting cell number (day 0) from the final cell number (day 4). Data are then normalized to control values (no statin) to correct for differences in proliferation rates between cells from different patients.