September 2004: A recessive head-tilt phenotype has been identified in some mice in this strain and is being bred out, but may be segregating in the mice currently being distributed.
A diabetes-resistant recombinant congenic developed by introgressing selected markers of resistance alleles for all but one known diabesity QTL in the parental strains NZO/HlLt and NON/Lt. The NONcNZO5/LtJ stock has been specifically constructed to exclude 5 NZO-derived and two NON-derived diabetes susceptibility QTL present in the highly diabetes-prone NONcNZO10LtJ recombinant congenic stock. NONcNZO5/LtJ males develop a comparable level of moderate obesity to that developing in the highly diabetes susceptible NONcNZO10/LtJ males, but they do not develop the extreme obesity characteristic of NZO/HlLt. Neither NONcNZO5/LtJ males nor females develop spontaneous type 2 diabetes on a 6% fat-containing diet. Serum insulin and leptin values are close to the NON/Lt parental background range and significantly lower than in NZO/HlLt. Unlike NZO/HlLt, NONcNZO5/LtJ breeds well. Unlike NZO and NONcNZO10/LtJ males, NONcNZO5LtJ males are resistant to adverse hepatic side effects of thiazolidinediones and thus, in combination with NONcNZO10/LtJ mice, may be useful for pharmacogenetic analysis. This strain represents a model of polygenic obesity and may be used as a diabetes resistant control for NONcNZO10/LtJ (Stock No. 004456).
Currently there are no related genes or alleles for this strain.