Evidence map›Paper›PMID 10948694›Full record

ArticleJournal of pharmacokinetics and biopharmaceutics1999

Basic pharmacodynamic models for agents that alter production of natural cells.

W Krzyzanski, R Ramakrishnan, W J Jusko

Abstract read
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In one paragraph

Article in Journal of pharmacokinetics and biopharmaceutics, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed
0.5field-weighted citation impact, top 30% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 84 citations in OpenAlex.

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  11. Delayed logistic indirect response models: realization of oscillating behavior.Journal of pharmacokinetics and pharmacodynamics · 2018
    Article
  12. Article
  13. Models for the red blood cell lifespan.Journal of pharmacokinetics and pharmacodynamics · 2016
    Article
  14. Article
  15. Review
  16. Pharmacodynamic models of age-structured cell populations.Journal of pharmacokinetics and pharmacodynamics · 2015
    Review
  17. Article
  18. Article
  19. Observational
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

W KrzyzanskiDepartment of Pharmaceutics, School of Pharmacy, State University of New York at Buffalo, Buffalo 14260, USA.
R Ramakrishnan
W J Jusko
University at Buffalo, State University of New York · US

Funding

MATHEMATICAL MODELS IN PHARMACODYNAMICSR01GM057980 · NIGMS · STATE UNIVERSITY OF NEW YORK AT BUFFALO · PI JUSKO, WILLIAM J., KRZYZANSKI, WOJCIECH · 1998 to 2013
$3.4M
NIGMS NIH HHS GM 57980
6 · The paper itself

Abstract

Basic indirect pharmacodynamic models for agents which alter the generation of natural cells based on a life-span concept are introduced. It is assumed that cells (R) are produced at a constant rate (kin), survive for a specific duration TR, and then are lost. The rate of cell loss must equal the production rate but is delayed by TR. A therapeutic agent can stimulate or inhibit the production rate according to the Hill function: 1 +/- H(C(t)) where H(C(t)) contains capacity (Smax) and sensitivity (SC50) constants and C(t) is a pharmacokinetic function. Thus an operative model is [equation: see text] with the baseline condition R0 = kin.TR. One- and two-compartment catenary cell models were examined by simulation to describe the role of pharmacokinetics and cell properties. The area under the effect curve (AUCE) was derived. The models were applied to literature data to describe the stimulatory effects of single doses of hematopoietic growth factors such as granulocyte colony-stimulating factor (G-CSF) on neutrophils, thrombopoietin (TPO) on platelets, and erythropoietin (EPO) on reticulocytes in blood. The models described experimental data adequately and provided cell life-spans and SC50 values. The proposed cell production/loss models can be readily used to analyze the pharmacodynamics of agents which alter cell production yielding realistic physiological parameters.

Indexed as

Cell Physiological PhenomenaPharmacokineticsAlgorithmsArea Under CurveBlood PlateletsCell DivisionGranulocyte Colony-Stimulating FactorHematopoiesisHumansModels, BiologicalNeutrophilsReticulocytesThrombopoietinGranulocyte Colony-Stimulating FactorThrombopoietin

Identifiers

PMID10948694
OpenAlexW2167689077

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.