C - Michigan Technological University

of variation was 4.3%. Activities of TRACP and BSALP were quantified as in section2.2.2.3.3 ResultsSerum leptin had an increasing trend during the prehibernation fattening season,and began a downward trend during hibernation (Figure 3.1). By “seasonal means” and“peak-valley” analyses, there were no significant differences between prehibernationvalues and hibernation values; though serum leptin was lower during post-hibernation(Tables 3.2 and 3.3). By “seasonal means” analysis, leptin fell from 4.07+0.178 ng/mL inhibernation to 3.23+0.219 ng/mL in post-hibernation (p=0.0058) (Table 3.3). Serum NPYdisplayed a similar trend to leptin, though it was more pronounced and shifted towardsthe following decad (Figure 3.2). NPY increased over November and December,peaking a decad after the transition into hibernation, and then steadily fell throughhibernation and post-hibernation. By both analysis models, NPY concentrations weresignificantly higher during hibernation than fall active and spring active periods (Tables3.2 and 3.3). By “seasonal means” analysis, NPY increased from 194+4 pmol/L in fall to219+4 pmol/L during hibernation and then dropped back to 178+6 in spring (p