News for R package httk

changes in version 1.6

This revision includes data and modifications as reported in the recently submitted Pearce et al. paper 
"Evaluation and Calibration of High‐Throughput Predictions of Chemical Distribution to Tissues". 
The Schmitt (2008) method for partition coefficients has been modified and calibrated using experimental data. 
The new method is now default, although the previous approach is available (set regression=FALSE and Funbound.plasma.pc.correction=FALSE
for other models).  The membrane affinity regression is new and always used in place of the old. 

added functions: available_rblood2plasma
in vivo Rblood2plasma used when available
well-stirred blood correction and restrictive.clearance options added 
New in vitro data from Uchimura 2010, brown 2007 and Pirovano 2016, Gulden 2002
Tonnelier Funbound.plasma values of 0.005 changed to 0 in chem.physical_and_invitro.data
new tissue.data table with Ruark 2014 that contains different formatting with human and rat specific data
parameterize_schmitt: added force.human.fub argument
added plasma protein and neutral lipid volume fractions to physiology.data for use in package
calc_mc_css: defaults to direct resampling. no longer coerces species to human when httkpop=T.  
             When another species is entered, a warning is thrown and the function behaves as if httkpop=F.
updated help file references and examples
fixed parameterize_3comp default.to.human bug: always set to false
removed temperature from schmitt parameters
overwrite 0 values for Fubound.plasma when overwrite=F in add_chemtable
added vignette for generating partition coefficient plots
added dsstox info: new columns: "DSSTox_Substance_Id","Structure_Formula", or "Substance_Type".  overwrote: MW and SMILES
added pc.data and obach2008 tables
httkpop option in calc_mc_css: well-stirred correction and new Funbound.plasma used by default.  
                               New partition coefficients used with other models by default.

Changes in version 1.5

This revision provides models, data, and vignettes for “httk-pop” functionality. “httk-pop” allows Monte Carlo simulation of physiological 
variability as described in Ring et al. “Identifying populations sensitive to environmental chemicals by simulating toxicokinetic variability”, 
which is accepted for publication at Environment International. This new human variability functionality is the new default, 
although the previous approach is available (set httkpop=FALSE).

default.to.human argument added to calc_hepatic_clearance and calc_stats.
calc_hepatic_clearance and calc_total_clearance do not necessarily require all parameters.
Argument "tissue" added to calc_analytic_css, calc_mc_css, and calc_mc_oral_equiv, enabling tissue specific calculations in addition to plasma.
get_cheminfo minor bug fix.
calc_dow: fraction neutral argument changed to fraction charged, thus treating zwitterions as neutrals
monte_carlo bug fix: Upper bound placed at limit of detection for censored params truncated normal distribution.  However, this has no impact on
                     the default case where the limit of detection is .01 the mean .005 because of the small standard deviation size (.0015). 
                     Only large coefficients of variation or Funbound.plasma values close to the limit of detection would be affected.
Multiple iv doses enabled in solve functions.
get_rblood2plasma function added to retrieve in vivo Rblood2plasma from chem.physical_and_invitro.data.

Version: 1.4
This revision incorporates changes suggested by the reviewers of Pearce et al. "httk: R Package for High-Throughput Toxicokinetics",
which was accepted, pending minor revision, in the Journal of  Statistical Software, included in vignettes. 

Table name "PK.physiology.data" changed to "physiology.data".


Version 1.3
This revision adds ~200 more chemicals (from two recent publications including Wetmore et al. 2015) and make several small changes to improve usability and stability. 

Version 1.2
This revision changes some model parameter names to follow a more systematic naming convention. 
Minor bugs have been fixed. 
This version is consistent with a newly submitted article to JSS describing use of the package. 

Version 1.1

Initial public (CRAN) release.


