parameterize_steadystate {httkgui} | R Documentation |
This function initializes the parameters needed in the functions calc_mc_css, calc_mc_oral_equiv, and calc_analytic_css for the three compartment steady state model ('3compartmentss').
parameterize_steadystate(chem.cas=NULL,chem.name=NULL,species="Human", clint.pvalue.threshold=0.05,default.to.human=F, human.clint.fub=F)
chem.name |
Either the chemical name or the CAS number must be specified. |
chem.cas |
Either the chemical name or the CAS number must be specified. |
species |
Species desired (either "Rat", "Rabbit", "Dog", "Mouse", or default "Human"). |
clint.pvalue.threshold |
Hepatic clearances with clearance assays having p-values greater than the threshold are set to zero. |
default.to.human |
Substitutes missing rat values with human values if true. |
human.clint.fub |
Uses human hepatic intrinsic clearance and fraction of unbound plasma in calculation of partition coefficients for rats if true. |
When species is specified as rabbit, dog, or mouse, the function uses the appropriate physiological data(volumes and flows) but substitues human fraction unbound, partition coefficients, and intrinsic hepatic clearance.
Clint |
Hepatic Intrinsic Clearance, uL/min/10^6 cells. |
Fgutabs |
Fraction of the oral dose absorbed, i.e. the fraction of the dose that enters the gutlumen. |
Funbound.plasma |
Fraction of plasma that is not bound. |
Qtotal.liverc |
Flow rate of blood exiting the liver, L/h/kg BW^3/4. |
Qgfrc |
Gromerular Filtration Rate, L/h/kg BW^3/4, volume of fluid filtered from kidney and excreted. |
BW |
Body Weight, kg |
MW |
Molecular Weight, g/mol |
million.cells.per.gliver |
Millions cells per gram of liver tissue. |
Vliverc |
Volume of the liver per kg body weight, L/kg BW. |
liver.density |
Liver tissue density, kg/L. |
Fhep.assay.correction |
The fraction of chemical unbound in hepatocyte assay using the method of Kilford et al. (2008) |
John Wambaugh
parameters <- parameterize_steadystate(chem.name='Bisphenol-A',species='Rat') parameters <- parameterize_steadystate(chem.cas='80-05-7')