IN VITRO STUDIES FURTHER DETAILS
In Vitro Study No: 1511
METHODS
Chemical
Conc. (mg/ml)
Volume (ml)
Loading (mg/cm2)
Vehicle
Species
Membrane
Site
Area (cm2)
Cell Type
Receptor Fluid
Temp. (oC)
Temp. Measured
Exposure Time (h)
Study Length (h)
Occluded
Analytical Method
Coumarin
0.014
0.2
0.0044
Phosphate Buffer (pH 7.4)
Human
Full Thickness Skin
Scalp
0.636
Static
phsphate buffer (pH 7.4)
37
Receptor Fluid
48
48
2
Radiolabelled (3H)
RESULTS
% Recovery
+/-
% In Stratum Corneum
+/-
% in Viable Skin
+/-
% Penetrated
+/-
% Absorbed
+/-
s-s-flux (mcrg/cm2/h)
+/-
kp (cm/h)
n
Lag Time (h)
0.172
0.064
0.0125
5
0.36
NOTES
Cadaver skin was used. They did not give the concentration applied or loading. I have extrapolated it back from the flux and Kp.
REFERENCE
Percutaneous Absorption of Coumarin, Griseofulvin and Propranolol Across Human Scalp and Abdominal Skin (1989) Meth. And Find Exp. Clin. Pharamcol., 11 :643-646