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- M Kimmel, R Chakraborty, J P King, M Bamshad, W S Watkins, L B Jorde
- Genetics
- 1998

To examine the signature of population expansion on genetic variability at microsatellite loci, we consider a population that evolves according to the time-continuous Moran model, with growing population size and mutations that follow a general asymmetric stepwise mutation model. We present calculations of expected allele-size variance and homozygosity at aā¦ (More)

- Tomasz Lipniacki, Pawel Paszek, A R Allan R Brasier, Bruce Luxon, Marek Kimmel
- Journal of theoretical biology
- 2004

The two-feedback-loop regulatory module of nuclear factor kappaB (NF-kappaB) signaling pathway is modeled by means of ordinary differential equations. The constructed model involves two-compartment kinetics of the activators IkappaB (IKK) and NF-kappaB, the inhibitors A20 and IkappaBalpha, and their complexes. In resting cells, the unphosphorylatedā¦ (More)

- A Polanski, M Kimmel
- Genetics
- 2003

We present new methodology for calculating sampling distributions of single-nucleotide polymorphism (SNP) frequencies in populations with time-varying size. Our approach is based on deriving analytical expressions for frequencies of SNPs. Analytical expressions allow for computations that are faster and more accurate than Monte Carlo simulations. Inā¦ (More)

- R Chakraborty, M Kimmel, D N Stivers, L J Davison, R Deka
- Proceedings of the National Academy of Sciencesā¦
- 1997

Using the generalized stepwise mutation model, we propose a method of estimating the relative mutation rates of microsatellite loci, grouped by the repeat motif. Applying ANOVA to the distributions of the allele sizes at microsatellite loci from a set of populations, grouped by repeat motif types, we estimated the effect of population size differences andā¦ (More)

- Bo Peng, Marek Kimmel
- Bioinformatics
- 2005

SUMMARY
simuPOP is a forward-time population genetics simulation environment. The core of simuPOP is a scripting language (Python) that provides a large number of objects and functions to manipulate populations, and a mechanism to evolve populations forward in time. Using this R/Splus-like environment, users can create, manipulate and evolve populationsā¦ (More)

- P H Lieberman, M F Brennan, M Kimmel, R A Erlandson, P Garin-Chesa, B Y Flehinger
- Cancer
- 1989

In the period from 1923 to 1986 our pathologists examined pathologic material from 102 patients with alveolar soft-part sarcoma (ASPS). Followup clinical data is available for 91. Median followup is 7 years (range 1 month to 27 years). Local recurrence was only found if residual disease was left at the time of the original excision. Survival in thoseā¦ (More)

- Dimitra Trikka, Zhe Fang, +4 authors David L Nelson
- Genome research
- 2002

We have initiated a candidate gene approach to study variation and predisposition to cancer in the four major ethnic groups that constitute the U.S. population (African Americans, Caucasians, Hispanics, and Asians). We resequenced portions of three helicase genes (BLM, WRN, and RECQL) identifying a total of 37 noncoding single nucleotide polymorphismsā¦ (More)

- Tomasz Lipniacki, Pawel Paszek, Allan R Brasier, Bruce A Luxon, Marek Kimmel
- Biophysical journal
- 2006

Living cells may be considered noisy or stochastic biochemical reactors. In eukaryotic cells, in which the number of protein or mRNA molecules is relatively large, the stochastic effects originate primarily in regulation of gene activity. Transcriptional activity of a gene can be initiated by transactivator molecules binding to the specific regulatoryā¦ (More)

- A Swierniak, A Polanski, M Kimmel
- Cell proliferation
- 1996

We explore mathematical properties of models of cancer chemotherapy including cell-cycle dependence. Using the mathematical methods of control theory, we demonstrate two assertions of interest for the biomedical community: 1 Periodic chemotherapy protocols are close to the optimum for a wide class of models and have additional favourable properties. 2 Twoā¦ (More)

- M Kimmel, B J Flehinger
- Biometrics
- 1991

This paper is concerned with the relationship between the occurrence of metastases and the size of primary cancers. We consider two probabilistic characterizations of this relationship. First is the distribution function of tumor sizes at the point of metastatic transition; second is the probability that detectable metastases are present when the cancerā¦ (More)