Models

Dataset Information

50

Rattanakul2003_BoneFormation_PTHadministration


ABSTRACT: This a model from the article: Modeling of bone formation and resorption mediated by parathyroid hormone: response to estrogen/PTH therapy. Rattanakul C, Lenbury Y, Krishnamara N, Wollkind DJ. Biosystems 2003:70(1):55-72. 12753937 , Abstract: Bone, a major reservoir of body calcium, is under the hormonal control of the parathyroid hormone (PTH). Several aspects of its growth, turnover, and mechanism, occur in the absence of gonadal hormones. Sex steroids such as estrogen, nonetheless, play an important role in bone physiology, and are extremely essential to maintain bone balance in adults. In order to provide a basis for understanding the underlying mechanisms of bone remodeling as it is mediated by PTH, we propose here a mathematical model of the process. The nonlinear system model is then utilized to study the temporal effect of PTH as well as the action of estrogen replacement therapy on bone turnover. Analysis of the model is done on the assumption, supported by reported clinical evidence, that the process is characterized by highly diversified dynamics, which warrants the use of singular perturbation arguments. The model is shown to exhibit limit cycle behavior, which can develop into chaotic dynamics for certain ranges of the system's parametric values. Effects of estrogen and PTH administrations are then investigated by extending on the core model. Analysis of the model seems to indicate that the paradoxical observation that intermittent PTH administration causes net bone deposition while continuous administration causes net bone loss, and certain other reported phenomena may be attributed to the highly diversified dynamics which characterizes this nonlinear remodeling process. About this model: This model represents the second model from the published paper (eqs 35-37). The model has been built on the core model (which describes changes in the concentration of PTH, the number of osteoclasts and the number of osteoblasts) by considering the effects of exogenous PTH administration - in this particular case pulsatile, for a period of 6 hours in an interval of 1 day. This model was taken from the CellML repository and automatically converted to SBML. The original model was: rattananakul, lenbury, krishnamara, wollkind. (2003) - version01 The original CellML model was created by: Lloyd, Catherine, May c.lloyd@auckland.ac.nz The University of Auckland Auckland Bioengineering Institute This model originates from BioModels Database: A Database of Annotated Published Models (http://www.ebi.ac.uk/biomodels/). It is copyright (c) 2005-2011 The BioModels.net Team. To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information. In summary, you are entitled to use this encoded model in absolutely any manner you deem suitable, verbatim, or with modification, alone or embedded it in a larger context, redistribute it, commercially or not, in a restricted way or not.. To cite BioModels Database, please use: Li C, Donizelli M, Rodriguez N, Dharuri H, Endler L, Chelliah V, Li L, He E, Henry A, Stefan MI, Snoep JL, Hucka M, Le Novère N, Laibe C (2010) BioModels Database: An enhanced, curated and annotated resource for published quantitative kinetic models. BMC Syst Biol., 4:92.

SUBMITTER: Vijayalakshmi Chelliah  

PROVIDER: MODEL1012140000 | BioModels | 2005-01-01

REPOSITORIES: BioModels

altmetric image

Publications

Modeling of bone formation and resorption mediated by parathyroid hormone: response to estrogen/PTH therapy.

Rattanakul Chontita C   Lenbury Yongwimon Y   Krishnamara Nateetip N   Wollkind David J DJ  

Bio Systems 20030601 1


Bone, a major reservoir of body calcium, is under the hormonal control of the parathyroid hormone (PTH). Several aspects of its growth, turnover, and mechanism, occur in the absence of gonadal hormones. Sex steroids such as estrogen, nonetheless, play an important role in bone physiology, and are extremely essential to maintain bone balance in adults. In order to provide a basis for understanding the underlying mechanisms of bone remodeling as it is mediated by PTH, we propose here a mathematica  ...[more]

Similar Datasets

2009-03-25 | BIOMD0000000274 | BioModels
2005-01-01 | MODEL1012140001 | BioModels
2016-01-01 | S-EPMC4904033 | BioStudies
2019-01-01 | S-EPMC6668688 | BioStudies
2010-11-23 | BIOMD0000000279 | BioModels
2019-01-29 | PXD012303 | Pride
2009-01-01 | S-EPMC2744747 | BioStudies
2019-01-01 | S-EPMC6430773 | BioStudies
2016-05-26 | BIOMD0000000612 | BioModels
2015-01-01 | S-EPMC4641015 | BioStudies