Stationary distribution and extinction for a stochastic two-compartment model of B-cell chronic lymphocytic leukemia

Author(s):  
Miaomiao Gao ◽  
Daqing Jiang ◽  
Xiangdan Wen

In this paper, we study the dynamical behavior of a stochastic two-compartment model of [Formula: see text]-cell chronic lymphocytic leukemia, which is perturbed by white noise. Firstly, by constructing suitable Lyapunov functions, we establish sufficient conditions for the existence of a unique ergodic stationary distribution. Then, conditions for extinction of the disease are derived. Furthermore, numerical simulations are presented for supporting the theoretical results. Our results show that large noise intensity may contribute to extinction of the disease.

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Miaomiao Gao ◽  
Daqing Jiang ◽  
Tasawar Hayat ◽  
Ahmed Alsaedi ◽  
Bashir Ahmad

<p style='text-indent:20px;'>This paper focuses on the spread dynamics of an HIV/AIDS model with multiple stages of infection and treatment, which is disturbed by both white noise and telegraph noise. Switching between different environmental states is governed by Markov chain. Firstly, we prove the existence and uniqueness of the global positive solution. Then we investigate the existence of a unique ergodic stationary distribution by constructing suitable Lyapunov functions with regime switching. Furthermore, sufficient conditions for extinction of the disease are derived. The conditions presented for the existence of stationary distribution improve and generalize the previous results. Finally, numerical examples are given to illustrate our theoretical results.</p>


2006 ◽  
Vol 12 (4) ◽  
pp. 187-192
Author(s):  
F. Scamardella ◽  
M. Maconi ◽  
L. Albertazzi ◽  
B. Gamberi ◽  
L. Gugliotta ◽  
...  

Author(s):  
Alessandro Pileri ◽  
Carlotta Baraldi ◽  
Alessandro Broccoli ◽  
Roberto Maglie ◽  
Annalisa Patrizi ◽  
...  

2001 ◽  
Vol 194 (11) ◽  
pp. 1639-1648 ◽  
Author(s):  
Andreas Rosenwald ◽  
Ash A. Alizadeh ◽  
George Widhopf ◽  
Richard Simon ◽  
R. Eric Davis ◽  
...  

The most common human leukemia is B cell chronic lymphocytic leukemia (CLL), a malignancy of mature B cells with a characteristic clinical presentation but a variable clinical course. The rearranged immunoglobulin (Ig) genes of CLL cells may be either germ-line in sequence or somatically mutated. Lack of Ig mutations defined a distinctly worse prognostic group of CLL patients raising the possibility that CLL comprises two distinct diseases. Using genomic-scale gene expression profiling, we show that CLL is characterized by a common gene expression “signature,” irrespective of Ig mutational status, suggesting that CLL cases share a common mechanism of transformation and/or cell of origin. Nonetheless, the expression of hundreds of other genes correlated with the Ig mutational status, including many genes that are modulated in expression during mitogenic B cell receptor signaling. These genes were used to build a CLL subtype predictor that may help in the clinical classification of patients with this disease.


2021 ◽  
Author(s):  
Francesca Magrinelli ◽  
Sara Mariotto ◽  
Gianpaolo Nadali ◽  
Giuseppe Todeschini ◽  
Massimiliano Lanzafame ◽  
...  

1994 ◽  
Vol 39 (2) ◽  
pp. 137-146 ◽  
Author(s):  
P. Tassone ◽  
P. Bonelli ◽  
F. Tuccillo ◽  
H.M. Bond ◽  
M.C. Turco ◽  
...  

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