In the E group, the mean values of the SC79 mouse Biomechanical parameters were higher than those of the C group, but these differences were not significant. Table 1 The results from comparative bioassay: body weight, biomechanical test, histomorphometry, and serum
analysis Sham OVX Estradiol benzoate Parathyroid hormone AICAR Mean STD Mean STD Mean STD Mean STD Body weight (g) 275.6a 14.31 342.2 19.91 280.3a 12.05 324.9b,c 19.38 Serum analysis Osteocalcin (ng/ml) 2a 2.0 17.78 5.64 5.347a 1.79 45.46a,b,c 5.22 Crosslaps (ng/ml) 4.04a 0.25 33.83 8.37 46.86 34.25 45.66b 19.56 Biomechanical PD-1/PD-L1 Inhibitor 3 supplier test Maximum load (N) 192.1a 20.49 166.03 38.36 182.92b 13.83 225.25a,b,c 46.55 Yield load (N) 120.2 16.48 111.57 31.33 113.14 10.04 132.00 18.69 Stiffness (N/mm) 267.0a 26.10 235.56 40.82 237.15b 45.40 314.87a,b,c 72.05 Histomorphometry N.Nd/mm2 48.54a 5.439 34.35 6.97 40.66b 6.24 41.32a 4.36 Tb.Ar (%) 77.25a 10.73
57.18 13.62 61.04b 8.27 75.65ac 9.02 Tb.Wi (mcm) 8.5a 1.38 7.62 0.95 7.53b 1.25 9.80abc 1.27 B.Dm (mcm) 3,154 135.9 3,137 280.6 3,140 161.1 3,151 124.1 Ma.Dm (mcm) 1,814 67.78 1,838 221.4 1,792 123.4 1,615a,b,c 132.5 B.Dm/Ma.Dm 1.740 0.063 1.716 0.08 1.749 0.069 1.938a,b,c 0.069 Tb.Ar ratio of trabecular
area, N.Nd/mm 2 connectivity, Tb.Wi trabecular thickness, B.Dm bone diameter, Ma.Dm marrow diameter aSham/E/PTH vs. E (p < 0.05) Histomorphometric changes in the proximal femur after administration GPX6 of estradiol and parathyroid hormone The results of the histomorphometric analysis and micro-architectural parameters are summarized in Table 1. The results of Tb.Ar, N.Nd/mm2, and Tb.Wi were significantly higher in the PTH group (Tb.Ar = 75.65%, N.Nd/mm2 = 41.32, Tb.Wi = 9.80 µm) in comparison to the C group (Tb.Ar = 57.18%, N.Nd/mm2 = 34.35, Tb.Wi = 7.62 µm). We found a significantly higher value for the PTH compared to E groups concerning the Tb.Ar. Although the mean values of Tb.Ar, N.Nd/mm2, and Tb.Wi were higher in the E-treated rats (Tb.Ar = 61.04%, N.Nd/mm2 = 40.66, Tb.Wi = 7.53) than in the C, these differences were statistically not significant. The Tb.Wi in the PTH rats was significantly higher compared to the sham animals (Tb.Wi = 8.5 µm; Fig. 5). Fig. 5 Microradiographs of the proximal femur of rat show the high content of both cortical and trabecular surfaces (after breaking test). a The control group (C) with a low trabecular density. b The rat femur after treatment with estradiol, c the sham group, and d after substitution with PTH (high trabecular content and thick cortical shell) The mean of B.Dm/Ma.Dm ratio was in the PTH group (1.938) significantly higher than C group (1.716).