Genetic analysis of crown size in the first molars using SMXA recombinant inbred mouse strains

被引：19

作者：

Shimizu, T ^{[1
]}

Oikawa, H ^{[1
]}

Han, J ^{[1
]}

Kurose, E ^{[1
]}

Maeda, T ^{[1
]}

机构：

[1] Nihon Univ, Sch Dent Matsudo, Dept Pediat Dent, Chiba 2718587, Japan

来源：

JOURNAL OF DENTAL RESEARCH | 2004年 / 83卷 / 01期

关键词：

tooth size; SMXA recombinant inbred mice; QTL analysis; interval mapping;

D O I：

10.1177/154405910408300109

中图分类号：

R78 [口腔科学];

学科分类号：

1003 ;

摘要：

Tooth crown size may be determined by both genetic and environmental factors. The aim of this study was to identify quantitative trait loci (QTLs) affecting dental crown size and determine whether there is genetic independence between upper and lower teeth, using SMXA recombinant inbred strains of mice. Mesiodistal and buccolingual crown diameters (MD and BL, respectively) of the upper and lower first molars (M-1 and M-1, respectively) were measured. For each trait, mean values of substrains showed a continuous spectrum of distribution. Genome-wide scan detected QTLs exceeding suggestive threshold levels for MD of M-1 (chromosomes 7, 13, and 17), BL of M-1 (chromosomes 8 and 13), MD of M-1 (chromosomes 7 and 13), and BL of M-1 (chromosomes 3 and 15). These findings suggest that tooth crown size is controlled by multiple genes, and that there is some independence of genetic control between M-1 and M-1.

引用

页码：45 / 49

页数：5