Effects of Catastrophic Anemia in an Intra-Host Model of Malaria

In this paper, we develop a mathematical model to assess the strength of the effects of catastrophic anemia level on the dynamical transmission of malaria parasite within the body of a host. We first consider a temporal model. The important mathematical features of the model are thoroughly investigated. We found that the model exhibits forward bifurcation. We also consider a spatiotemporal model using reaction–diffusion equations. The model is numerically analyzed to assess the impact of anemia on the dynamical transmission of malaria parasite within the body of a host. Through numerical simulation, we found that malaria can lead to a catastrophic anemia level even if the parasite is nonpersistent within the body of a host. Numerical results also suggest that to reduce or control the anemia level, the strategy should be to accelerate innate cell reproduction rate or should have the ability to clean parasitized red blood cells (PRBCs) with a high mortality rate.

[1]  D. Kwiatkowski,et al.  The regulation of malaria parasitaemia: parameter estimates for a population model , 1995, Parasitology.

[2]  D. Kwiatkowski,et al.  Estimating sequestered parasite population dynamics in cerebral malaria. , 1998, Proceedings of the National Academy of Sciences of the United States of America.

[3]  L. Allen Animal source foods to improve micronutrient nutrition and human function in developing countries. Proceedings of a conference. June 24-26, 2002. Washington, DC, USA. , 2003, The Journal of nutrition.

[4]  W. Bossert,et al.  The Dynamics ofPlasmodium falciparumBlood-stage Infection , 1997 .

[5]  K. Dietz,et al.  Review of intra-host models of malaria. , 1999, Parassitologia.

[6]  R. Price,et al.  Factors contributing to anemia after uncomplicated falciparum malaria. , 2001, The American journal of tropical medicine and hygiene.

[7]  J. Watmough,et al.  Reproduction numbers and sub-threshold endemic equilibria for compartmental models of disease transmission. , 2002, Mathematical biosciences.

[8]  W. Bossert,et al.  The dynamics of Plasmodium falciparum blood-stage infection. , 1997, Journal of theoretical biology.

[9]  R. Snow,et al.  Impact of malaria control on childhood anaemia in Africa – a quantitative review , 2004, Tropical medicine & international health : TM & IH.

[10]  D. Roberts,et al.  Severe malarial anaemia. , 2006, Current molecular medicine.

[11]  J. Hyman,et al.  Determining Important Parameters in the Spread of Malaria Through the Sensitivity Analysis of a Mathematical Model , 2008, Bulletin of mathematical biology.

[12]  J. Langhorne,et al.  Malarial anemia: of mice and men. , 2007, Blood.

[13]  R. Anderson Complex dynamic behaviours in the interaction between parasite population and the host's immune system. , 1998, International journal for parasitology.

[14]  R M May,et al.  Non-linear phenomena in host—parasite interactions , 1989, Parasitology.

[15]  A. Lloyd,et al.  Reply to: Models for the in-host dynamics of malaria revisited: errors in some basic models lead to large over-estimates of growth rates , 1998, Parasitology.

[16]  D. Kwiatkowski,et al.  A model for estimating total parasite load in falciparum malaria patients. , 2002, Journal of theoretical biology.

[17]  W L Hogarth,et al.  Anaemia of acute malaria infections in non-immune patients primarily results from destruction of uninfected erythrocytes , 1999, Parasitology.

[18]  R. Anderson,et al.  The within-host cellular dynamics of bloodstage malaria: theoretical and experimental studies , 1996, Parasitology.

[19]  R Heinrich,et al.  Mathematical modelling of the within-host dynamics of Plasmodium falciparum , 2000, Parasitology.

[20]  O. Diekmann,et al.  On the definition and the computation of the basic reproduction ratio R0 in models for infectious diseases in heterogeneous populations , 1990, Journal of mathematical biology.

[21]  Jane Crawley,et al.  Reducing the burden of anemia in infants and young children in malaria-endemic countries of Africa: from evidence to action. , 2004, The American journal of tropical medicine and hygiene.

[22]  K. Dietz,et al.  Modelling the transition of asexual blood stages of Plasmodium falciparum to gametocytes. , 2000, Journal of theoretical biology.

[23]  B. Hellriegel Modelling the immune response to malaria with ecological concepts: short-term behaviour against long-term equilibrium , 1992, Proceedings of the Royal Society of London. Series B: Biological Sciences.

[24]  W. Bossert,et al.  The optimal production of gametocytes by Plasmodium falciparum. , 1998, Journal of theoretical biology.

[25]  Z. Premji,et al.  An analysis of anemia and child mortality. , 2001, The Journal of nutrition.

[26]  D. Weatherall,et al.  The deoxyuridine suppression test in severe anaemia following Plasmodium falciparum malaria. , 1984, Transactions of the Royal Society of Tropical Medicine and Hygiene.

[27]  K. Dietz,et al.  Plasmodium falciparum parasitaemia described by a new mathematical model , 2001, Parasitology.

[28]  W. Bossert,et al.  The blood-stage dynamics of mixed Plasmodium malariae-Plasmodium falciparum infections. , 1999, Journal of theoretical biology.

[29]  J. Langhorne,et al.  Insights into the immunopathogenesis of malaria using mouse models , 2006, Expert Reviews in Molecular Medicine.

[30]  R. M. May,et al.  Immunisation and herd immunity , 1990, The Lancet.