Skip to main content

Part of the book series: Industrial and Applied Mathematics ((INAMA))

  • 667 Accesses

Abstract

The effect of perfect drug adherence towards controlling the disease HIV/AIDS is discussed through impulsive differential equations. Here, we have assumed the model with both drugs RTIs and IL-2 that are taken at each impulse \({t} = {t}_{{k}} ({k} = 1, 2, 3,\ldots )\) and \({t} = {T}_{l} (l = 1, 2, 3,\ldots )\) respectively. Furthermore, we have considered that the effects of the drugs are instantaneous. However, the system endures a prompt change in the state. Here, we have considered the mathematical models including combination of drug therapies (\(\mathrm{T}\)-20 and \(\mathrm{IL}\)-2). Here, we have mainly studied the dynamical behavior of the system in the presence of drug. Using impulsive differential equations, dosing interval and threshold value of dosages can be obtained more precisely. We also have determined the threshold value of the drug dosage and the dosing interval for which the disease-free equilibrium remains stable.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

eBook
USD 16.99
Price excludes VAT (USA)
  • Available as EPUB and PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 54.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 54.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

References

  1. Smith, R.J.: Explicitly accounting for antiretroviral drug uptake in theoretical HIV models predicts long-term failure of protease-only therapy. J. Theor. Biol. 251(2), 227–237 (2008)

    Article  MathSciNet  Google Scholar 

  2. Song, B., Lou, J., Wen, Q.: Modeling two different therapy strategies for drug T-20 on HIV-1 patients. Appl. Math. Mech. 32(4), 419–436 (2011)

    Article  MathSciNet  MATH  Google Scholar 

  3. Bainov, D.D., Simeonov, P.S.: Systems with Impulsive Effect. Ellis Horwood Ltd, Chichester (1989)

    MATH  Google Scholar 

  4. Smith, R.J., Wahl, L.M.: Distinct effects of protease and reverse transcriptase inhibition in an immunological model of HIV-1 infection with impulsive drug effects. Bull. Math. Biol. 66(5), 1259–1283 (2004)

    Article  MathSciNet  MATH  Google Scholar 

  5. Smith, R.J.: Adherence to antiretroviral HIV drugs: how many doses can you miss before resistance emerges? Proc. R. Soc. B 273, 617–624 (2006)

    Article  Google Scholar 

  6. Lou, J., Smith, R.J.: Modelling the effects of adherence to the HIV fusion inhibitor enfuvirtide. J. Theor. Biol. 268, 1–13 (2011)

    Article  MathSciNet  Google Scholar 

  7. Perelson, A.S., Krischner, D.E., De-Boer, R.: Dynamics of HIV infection of CD4 T cells. Math. Biosc. 114, 81–125 (1993)

    Article  MATH  Google Scholar 

  8. Perelson, A.S., Neuman, A.U., Markowitz, M.: J.M., Leonard, Ho, D.D.: HIV 1 dynamics in vivo: viron clearance rate, infected cell life span, and viral generation time. Science 271, 1582–1586 (1996)

    Article  Google Scholar 

  9. Yang, J., Wang, X., Zhang, F.: A differential equation model of HIV infection of CD4\(^+\) T cells with delay. Disc. Dyn. Nat. Soc. (2008). Article ID 903678, 16 pages doi:10.1155/2008/903678.179

  10. Bonhoeffer, S., Coffin, J.M., Nowak, M.A.: Human immunodeficiency virus drug therapy and virus load. J. Virol. 71, 3275–3278 (1997)

    Google Scholar 

  11. Smith, R.J., Wahl, L.M.: Drug resistance in an immunological model of HIV-1 infection with impulsive drug effects. The Bull. Math. Biol. 67(4), 783–813 (2005)

    Article  MathSciNet  MATH  Google Scholar 

  12. Smith, R.J., Aggarwala, B.D.: Can the viral reservoir of latently infected CD\(4^+\)T cells be eradicated with antiretroviral HIV drugs? J. Math. Biol. 59, 697–715 (2009)

    Article  MathSciNet  MATH  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Priti Kumar Roy .

Rights and permissions

Reprints and permissions

Copyright information

© 2015 Springer Science+Business Media Singapore

About this chapter

Cite this chapter

Roy, P.K. (2015). Perfect Drug Adherence. In: Mathematical Models for Therapeutic Approaches to Control HIV Disease Transmission. Industrial and Applied Mathematics. Springer, Singapore. https://doi.org/10.1007/978-981-287-852-6_7

Download citation

Publish with us

Policies and ethics