信阳师范学院学报(自然科学版)
信暘師範學院學報(自然科學版)
신양사범학원학보(자연과학판)
JOURNAL OF XINYANG NORMAL UNIVERSITY(NATURAL SCIENCE EDITION)
2005年
3期
262-267
,共6页
免疫模型%基本再生数%全局稳定性
免疫模型%基本再生數%全跼穩定性
면역모형%기본재생수%전국은정성
immunological models%basic reproduction number%global stability
在研究人类免疫缺陷性病毒HIV和丙肝病毒C(HCV)中,数学模型起到了非常重要的作用.感染T细胞在人体内潜伏若干年后才转化为病毒,在这期间,感染T细胞的丢失不是简单的线性作用关系.本文报道了一类具有饱和丢失率的数学模型,得到了基本再生数R0. R0完全决定T细胞的全局动力学性质,即如果 R0≤1,感染T细胞消失,如果R0>1, 感染变为慢性的, 在可行区域内,惟一流行病平衡点是全局渐近稳定的.同时,还考虑了在饱和丢失感染T细胞下的药物的影响.
在研究人類免疫缺陷性病毒HIV和丙肝病毒C(HCV)中,數學模型起到瞭非常重要的作用.感染T細胞在人體內潛伏若榦年後纔轉化為病毒,在這期間,感染T細胞的丟失不是簡單的線性作用關繫.本文報道瞭一類具有飽和丟失率的數學模型,得到瞭基本再生數R0. R0完全決定T細胞的全跼動力學性質,即如果 R0≤1,感染T細胞消失,如果R0>1, 感染變為慢性的, 在可行區域內,惟一流行病平衡點是全跼漸近穩定的.同時,還攷慮瞭在飽和丟失感染T細胞下的藥物的影響.
재연구인류면역결함성병독HIV화병간병독C(HCV)중,수학모형기도료비상중요적작용.감염T세포재인체내잠복약간년후재전화위병독,재저기간,감염T세포적주실불시간단적선성작용관계.본문보도료일류구유포화주실솔적수학모형,득도료기본재생수R0. R0완전결정T세포적전국동역학성질,즉여과 R0≤1,감염T세포소실,여과R0>1, 감염변위만성적, 재가행구역내,유일류행병평형점시전국점근은정적.동시,환고필료재포화주실감염T세포하적약물적영향.
It is well-known that the mathematical models provise very important information for theresearch of human immunodeficiency uirus-type 1 and hepatitis C virus (HCV).The infected T cells can remain latent and harbor virus for several years before virus productin occurs.In this period ,the loss of infected T cell is not simple linear interaction .In this paper ,we consider the classcal mathematical model with saturated loss of infected cellls.Our analysis establishes that the global dynamics of T cells are completely determined by a basic reproduction number R0.If R0≤1,infected T cells always die out.If R0>1,the infection becomes chronic,and a unique endemic equilibrium is globally stable in the interior of the feasible region.We also consider the drug effectiveness under saturated loss of infected cells.