title: Analysis of the disease course of HIV-1 by entropic chaos degree.
abstract: When a V3 sequence obtained on the n-th year after infection with human immunodeficiency virus type 1 (HIV-1) was supposed to change into a V3 sequence on the n + 1-th year, the variation between the above two sequences was analyzed by means of entropic chaos degree. The entropic chaos degree measures chaotic aspects of the dynamics causing the variation of sequence. If it is large, then the dynamics produces the large complexity, in other words, the variation of sequences becomes large. As a result, the chaos degree for the dynamics changing the V3 region showed the specific variation patterns throughout from the early stages of infection to death. That is, the variation patterns indicated that the entropic chaos degree is useful to measure the stage of disease progression after HIV-1 infection.
authors.affiliation: Department of Control and Computer Engineering, Numazu College of Technology, Shizuoka, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Sato
authors.forename: M
authors.initials: M
authors.lastname: Ohya
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000503:physiopathology*; D018450:Disease Progression; D015699:HIV Envelope Protein gp120 / Q000235:genetics; D015658:HIV Infections / Q000503:physiopathology* / Q000821:virology; D015497:HIV-1; D006801:Humans; D017711:Nonlinear Dynamics; D011237:Predictive Value of Tests
chemical_list: D015699:HIV Envelope Protein gp120