scholarly journals Effects of long-term plate fixation with different fixation modes on the radial cortical bone in dogs

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0247410
Author(s):  
Norihiro Muroi ◽  
Hiroki Ochi ◽  
Masakazu Shimada ◽  
Yoshinori Asou ◽  
Yasushi Hara
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Histological Analysis ◽  
Locking Plate ◽  
Plate Fixation ◽  
Control Group ◽  
Mineral Density ◽  
Plate Group ◽  
Necrosis Factor

The aim of this study was to examine the effect of long-term locking plate fixation on the cortical bone of the canine radius. Locking compression plates were fixed to the left and right radius in dogs (n = 3). The left radius was fixed with a locking head screw (Locking Plate group, LP). The locking compression plate was compressed periosteally in the right radius using a cortex screw (Compression Plate group, CP). Radial bones from dogs that were euthanized for other purposes were collected as an untreated control group (Control group). After euthanasia at 36 weeks following plate fixation, radial bones were evaluated for bone mineral density and underwent histological analysis. Bone metabolic markers were analyzed by quantitative polymerase chain reaction (qPCR). Statistical analyses were performed for comparisons between groups. The LP group showed no significant difference in bone mineral density after plate fixation, whereas the CP group showed significantly lower bone mineral density. Histological analysis indicated that the number of osteoclasts and rate of empty lacunae increased significantly in the CP group relative to the Control and LP groups. qPCR analysis indicated increased expression of inflammatory cytokines, such as tumor necrosis factor-alpha, interleukin-6, and tumor necrosis factor ligand superfamily member 11 in the CP group, whereas Runt-related transcription factor 2, an osteoblast marker, was similar in all groups. The expression of hypoxia-inducible factor-1α in the CP group was also increased relative to that in the Control and LP groups. Thus, locking plate fixation is a biologically superior fixation method that does not cause implant-induced osteoporosis in the bone in the long term.

Anti-tumor Necrosis Factor Therapy Increased Spine and Femoral Neck Bone Mineral Density of Patients with Active Ankylosing Spondylitis with Low Bone Mineral Density

2015 ◽  
Vol 42 (8) ◽  
pp. 1413-1417 ◽  
Author(s):  
Haibo Li ◽  
Qiuxia Li ◽  
Xi Chen ◽  
Chen Ji ◽  
Jieruo Gu
Keyword(s):  
Bone Mineral Density ◽  
Ankylosing Spondylitis ◽  
Femoral Neck ◽  
Bone Mineral ◽  
Tumor Necrosis ◽  
Control Group ◽  
Study Group ◽  
Type I ◽  
Mineral Density ◽  
Necrosis Factor

Objective.To evaluate the effect of anti-tumor necrosis factor (TNF) therapy on bone mineral density (BMD) in patients with active ankylosing spondylitis (AS) with low BMD.Methods.Eighty-nine patients with active AS with low BMD were randomly divided into either a study group or a control group. The study group received etanercept (50 mg/week) or adalimumab (40 mg/2 week) subcutaneously for 1 year. BMD of lumbar spine and femoral neck was measured by dual energy X-ray absorptiometry, and bone turnover markers serum C telopeptide of type-I collagen (sCTX) and serum procollagen type-I N propeptide (PINP) were detected by ELISA at baseline and at end of study.Results.After 1 year, compared with baseline, there was a significant increase in spine and femoral neck BMD by a mean ± SD of 14.9% ± 15.6% (p < 0.0001) and 4.7% ± 7.9% (p < 0.0001) in the study group. In the control group, there was a significant decrease in spine and femoral neck BMD by a mean ± SD of −8.6% ± 9.7% (p < 0.0001) and −9.8% ± 11.5% (p < 0.0001). Compared with baseline, sCTX was significantly decreased in the study group (−40% at 1 yr, p < 0.0001), but bone-specific alkaline phosphatase and PINP increased (45.6%, p < 0.0001 and 30.8%, p < 0.0001, respectively).Conclusion.In patients with active AS with low BMD, the spine and femoral neck BMD increased after anti-TNF therapy for 1 year, and it was accompanied by a significant decrease in bone resorption markers and an increase in bone formation markers.

Determinants of bone mineral density in long-term adult survivors of childhood cancer

2013 ◽  
Author(s):  
C Klap B ◽  
L te Winkel M ◽  
den Hoed M ◽  
van Waas M ◽  
J C M M Neggers S ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Childhood Cancer ◽  
Bone Mineral ◽  
Adult Survivors ◽  
Mineral Density ◽  
Survivors Of Childhood Cancer

scholarly journals Nutritional Status in Spanish Adults with Celiac Disease Following a Long-Term Gluten-Free Diet Is Similar to Non-Celiac

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1626
Author(s):  
Catalina Ballestero-Fernández ◽  
Gregorio Varela-Moreiras ◽  
Natalia Úbeda ◽  
Elena Alonso-Aperte
Keyword(s):  
Bone Mineral Density ◽  
Vitamin D ◽  
Celiac Disease ◽  
Vitamin E ◽  
Nutritional Status ◽  
Bone Mineral ◽  
Biochemical Parameters ◽  
Gluten Free ◽  
Mineral Density

The only available treatment for celiac disease is life-long gluten exclusion. We conducted a cross-sectional age- and gender-matched study in 64 celiac adults on a long-term (>1 year) gluten-free diet and 74 non-celiac volunteers from Spain, using dietary, anthropometric, and biochemical parameters, as well as assessing bone mineral density and physical activity. Celiac adults had deficient intake (below 2/3 of the recommended intake) for folates, vitamin E, and iodine and low intake of calcium (below 80% of the recommended intake). Iron intake was also below 2/3 of the recommended intake in celiac women. Vitamin D intake was extremely low, and 34% of celiac patients had moderately deficient plasma levels. According to bone mineral density, celiac women may be more prone to osteopenia and osteoporosis. However, we found a perfectly analogous nutritional status scenario in celiac as compared to healthy volunteers, with the dietary deviations found being similar to those of the Spanish population, i.e., both groups followed a high-lipid, high-protein, and low-carbohydrate diet. Values for biochemical parameters were found within the reference ranges. Celiac disease had no influence on body weight, but body fat in celiac patients tended to be higher. According to our results, vitamin D, calcium, folates, vitamin E, iodine, and iron nutritional status should be specifically assessed and monitored in the celiac population.

scholarly journals Effect of Long-Term Unilateral Activity on Bone Mineral Density of Female Junior Tennis Players

1998 ◽  
Vol 13 (2) ◽  
pp. 310-319 ◽  
Author(s):  
Heidi Haapasalo ◽  
Pekka Kannus ◽  
Harri Sievänen ◽  
Matti Pasanen ◽  
Kirsti Uusi-Rasi ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Mineral Density ◽  
Tennis Players ◽  
Junior Tennis

scholarly journals Effects of 3-year GH replacement therapy on bone mineral density in younger and elderly adults with adult-onset GH deficiency

2012 ◽  
Vol 166 (2) ◽  
pp. 181-189 ◽  
Author(s):  
Mariam Elbornsson ◽  
Galina Götherström ◽  
Celina Franco ◽  
Bengt-Åke Bengtsson ◽  
Gudmundur Johannsson ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Elderly Patients ◽  
Bone Mineral ◽  
The Elderly ◽  
Marginal Effect ◽  
Adult Onset ◽  
Mineral Density ◽  
Gh Replacement ◽  
Femur Neck

ObjectiveLittle is known of the effects of long-term GH replacement on bone mineral content (BMC) and bone mineral density (BMD) in elderly GH-deficient (GHD) adults.Design/patients/methodsIn this prospective, single-center, open-label study, the effects of 3-year GH replacement were determined in 45 GHD patients >65 years and in 45 younger control GHD patients with a mean age of 39.5 (s.e.m.1.1) years. All patients had adult-onset disease and both groups were comparable in terms of number of anterior pituitary hormonal deficiencies, gender, body mass index, and waist:hip ratio.ResultsThe mean maintenance dose of GH was 0.24 (0.02) mg/day in the elderly patients and 0.33 (0.02) mg/day in the younger GHD patients (P<0.01). The 3 years of GH replacement induced a marginal effect on total body BMC and BMD, whereas femur neck and lumbar (L2–L4) spine BMC and BMD increased in both the elderly and the younger patients. The treatment response in femur neck BMC was less marked in the elderly patients (P<0.05 vs younger group). However, this difference disappeared after correction for the lower dose of GH in the elderly patients using an analysis of covariance. There were no between-group differences in responsiveness in BMC or BMD at other skeletal locations.ConclusionsThis study shows that GH replacement increases lumbar (L2–L4) spine and femur neck BMD and BMC in younger as well as elderly GHD patients. This supports the notion that long-term GH replacement is also useful in elderly GHD patients.

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