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Mice, similarly to some other rodent species, communicate with specialized sounds in the ultrasonic range called ultrasonic vocalizations (USV). Evaluation of this behavioral activity enables estimation of the social interactions in animal models of autistic spectrum disorders (ASD). Because transgenic mouse models are generated, in most cases, on the mixed 129SV/ C57BL6 genetic background, we were interested if parameters that characterize USV differ between these two mouse strains. In addition, we wanted to compare these strains with the BALB/c line. In order to analyze USV, we applied the standard isolation test to newborn animals and compared standard parameters. Obtained results indicate clear differences between the 129SV and C57BL6 strains in respect to all analyzed USV parameters. Both strains behave also differently when compared with the BALB/c strain. For this reason in experiments utilizing transgenic animals, contribution of various genetic backgrounds has to be carefully considered.
A total of 215 animals of twelve inbred strains of mice (A.CA/W, AKR/W, BALB/cW, BN/aW,C57BL/6W, C57Bl/10W, CBA/W, CBAT6/W, C3H/W, DBA/2W, 129Sl/SvW and HLB/219J) bred at the Cancer Centre and Institute of Oncology, Warsaw (Oncology Centre), were characterized In terms of five blood serum biochemical indicators related to their health, reproduction and genetic background. Glucose, total protein, creatinine, triglycerides (triacylglycerols) and total cholesterol were determined in mice aged four months. Significant interstrain differences were found among nearly all parameters considered, with the exception of total protein. The level of triglycerides showed wide interstrain differences and revealed a similar variation trend as the total cholesterol.For cholesterol and triglycerides, significant differences between sexes for the majority of strains were found. The results obtained may be important in the selection of experimental animals,for analysis of changes associated with various diseases, and for the explanation of their genetic background.
In 230 mice from 12 inbred strains (A.CA/W, AKR/W, BALB/cW, BN/aW, CBA/W, CBA-T6/W,C3H/W, C57BL/6W, C57BL/10W, DBA2/W, 129S1/SvW, HLB219/J) the following parameters were measured: the total number of white (WBC) and red (RBC) blood cells, haemoglobin concentration (HGB), haematocrit (HCT), mean corpuscular volume (MCV), mean corpuscular hemoglobin (MCH), mean corpuscular haemoglobin concentration (MCHC) and platelets (PLT) number. Highly significant interstrain differences were shown within RBC, HGB, HCT, MCV and PLT.
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