نتایج جستجو برای: mathematical model of hiv infection

تعداد نتایج: 21459276  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

2016
Cristiana J. Silva Delfim F. M. Torres

We propose a new mathematical model for the transmission dynamics of the human immunodeficiency virus (HIV). Global stability of the unique endemic equilibrium is proved. Then, based on data provided by the “Progress Report on the AIDS response in Cape Verde 2015”, we calibrate our model to the cumulative cases of infection by HIV and AIDS from 1987 to 2014 and we show that our model predicts w...

Journal: :current medical mycology 0
alireza izadi dept. of medical mycology, faculty of medicine golamreza asadikaram dept. of biochemistry, faculty of medicine nozar nakhaee dept. of epidemiology, faculty of medicine sanaz hadizadeh dept. of medical mycology, faculty of medicine seyyed amin ayatollahi mousavi dept. of medical mycology, faculty of medicine

background and purpose: tgf-β is a potent regulator and suppressor of the immune system and overproduction of this cytokine may contribute to immunosuppression in hiv-infected patients. increasing population of immunosuppressed patients has resulted in increasingly frequent of fungal infections, including oral candidiasis. the aim of this study was to evaluate the plasma levels of tgf-β under i...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده مدیریت 1391

one of the most important factors in study of project’s , is the study of environmental opportunities factors the permanent study of environmental opportunity factors . the study of permanent environmental changing and knowing golden threats’ cooperate with possible threats and at the result in structure forming and future skeleton of organization has a vital effects . the petrochemical industr...

Journal: :iranian journal of pathology 0
alireza abdollahi dept of pathology, imam hospital complex, school of medicine, tehran university of medical sciences, tehran, iran hana saffar dept of pathology, imam hospital complex, school of medicine, tehran university of medical sciences, tehran, iran

it is estimated that the number of hiv infected children globally has increased from 1.6 million in 2001 to 3.3 million in 2012. the number of children below 15 years of age living with hiv has increased worldwide. published data from recent studies confirmed dramatic survival benefit for infants started anti-retroviral therapy (art) as early as possible after diagnosis of hi. early confirmatio...

Background and Aims: Hepatitis E virus (HEV) infection is usually a self-limited viral disease that causes acute hepatitis and may progress to chronic hepatitis in immunosuppressed individuals. It seems that hemodialysis patients and HIV infected people are more exposed to HEV infection. The aim of this study was to evaluate the extent of HEV infection in hemodialysis and HIV infected patients ...

Journal: :Journal of acquired immune deficiency syndromes 1992
G W Nelson A S Perelson

Strains of human immunodeficiency virus (HIV) differ greatly in their ability to replicate in T4 cells. Fast-replicating strains are observed during the early and late stages of HIV infection, while slow-replicating strains prevail during the intermediate, latent, stage. The prevalence of slow-replicating strains has been attributed to these strains' ability to escape the immune response. Howev...

Hossein Faramarzi Jamal Sarvari, Kamran Bagheri Lankarani, Mahmood Amini Lari Mina Gholami Mohammad Motamedifar, Mohammad Taheri,

Evidence has shown that liver disease caused by hepatitis viruses can be more aggressive and severe in HIV infected subjects. Therefore, the present cross-sectional study aimed to evaluate the seroprevalence of HDV infection among HIV/HBV co-infected clients in Shiraz, southwest Iran. In this study, 178 patients co-infected with HBV and HIV individuals were enrolled. The diagnosis of HIV infect...

Journal: :AIDS 2012
Janne Estill Cindy Aubrière Matthias Egger Leigh Johnson Robin Wood Daniela Garone Thomas Gsponer Gilles Wandeler Andrew Boulle Mary-Ann Davies Timothy B Hallett Olivia Keiser

OBJECTIVES In low-income settings, treatment failure is often identified using CD4 cell count monitoring. Consequently, patients remain on a failing regimen, resulting in a higher risk of transmission. We investigated the benefit of routine viral load monitoring for reducing HIV transmission. DESIGN Mathematical model. METHODS We developed a stochastic mathematical model representing the co...

Journal: :Mathematical biosciences and engineering : MBE 2004
Patrick W Nelson Michael A Gilchrist Daniel Coombs James M Hyman Alan S Perelson

Mathematical models of HIV-1 infection can help interpret drug treatment experiments and improve our understanding of the interplay between HIV-1 and the immune system. We develop and analyze an age- structured model of HIV-1 infection that allows for variations in the death rate of productively infected T cells and the production rate of viral particles as a function of the length of time a T ...

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