Metabolic disorders and bone tissue mineral density in the early pathogenesis of osteonecrosis: study on rabbits with steroid-induced osteonecrosis

2020 ◽  
Vol 170 (12) ◽  
pp. 704-708
Author(s):  
L. Wang ◽  
◽  
L. Zhang ◽  
M. Gao ◽  
◽  
...  
2020 ◽  
Vol 33 (2) ◽  
Author(s):  
Khrystyna Kovalyshyn ◽  
Mykola Rozhko

Introduction. A research was conducted of the features of the structural and functional state of bone tissue in patients with generalized periodontitis with rheumatoid arthritis who live in different anthropogenically loaded areas. Aim. The aim of the research is to assess the bone tissue mineral density according to the indicators of densitometric researches and the level of a marker of bone metabolism in generalized periodontitis of I and II degree of severity. Material and methods. We examined 105 patients with GP of the I and II degree of severity, among whom were patients with rheumatoid arthritis who live in environmentally favorable and unfavorable areas. Peculiarities of the structural and functional state of bone tissue were assessed using an ultrasonic densitometer Sunlight Mini Omni TM and the level of a marker of bone tissue resorption of deoxypyridinoline in urine. Results. Patients with generalized periodontitis with rheumatoid arthritis who live in environmentally unfavorable areas, found the largest number of people with signs of osteopenia, osteoporosis and elevated levels of deoxypyridinoline. In particular, in generalized periodontitis of the II degree of severity with osteopenia – 14 people (48.27%), with osteoporosis – 9 people (31%), the level of deoxypyridinoline determined in women was 12.03 ± 0.16 n/mol, which in 2.2 times significantly higher than the group of healthy (p < 0.001). Conclusions. According to densitometric parameters and the level of deoxypyridinoline in the urine, the acceleration of bone tissue resorption in patients with generalized periodontitis of the II degree of severity with rheumatoid arthritis who live in environmentally unfavorable areas was established.


Bone ◽  
2012 ◽  
Vol 51 (5) ◽  
pp. 868-875 ◽  
Author(s):  
Do-Gyoon Kim ◽  
Anand R. Navalgund ◽  
Boon Ching Tee ◽  
Garrett J. Noble ◽  
Richard T. Hart ◽  
...  

2007 ◽  
Vol 35 (1) ◽  
pp. 84-92 ◽  
Author(s):  
Tonino Traini ◽  
Marco Degidi ◽  
Giovanna Iezzi ◽  
Luciano Artese ◽  
Adriano Piattelli

Molecules ◽  
2021 ◽  
Vol 26 (3) ◽  
pp. 546
Author(s):  
Asako Takahashi ◽  
Mayu Ishizaki ◽  
Yoshifumi Kimira ◽  
Yukari Egashira ◽  
Shizuka Hirai

Obesity is a major risk factor for some metabolic disorders including type 2 diabetes. Enhancement of peroxisome proliferator-activated receptor (PPAR) γ, a master regulator of adipocyte differentiation, is known to increase insulin-sensitive small adipocytes. In contrast, decreased PPARγ activity is also reported to improve insulin resistance. We have previously identified erucic acid as a novel natural component suppressing PPARγ transcriptional activity. In this study, we investigated the effect of erucic acid-rich yellow mustard oil (YMO) on obese/diabetic KK-Ay mice. An in vitro luciferase reporter assay and mesenchymal stem cell (MSC) differentiation assay revealed that 25 µg/mL YMO significantly inhibited PPARγ transcriptional activity and differentiation of MSCs into adipocytes but promoted their differentiation into osteoblasts. In KK-Ay mice, dietary intake of 7.0% (w/w) YMO significantly decreased the surrogate indexes for insulin resistance and the infiltration of macrophages into adipose tissue. Furthermore, 7.0% YMO increased bone mineral density. These results suggest that YMO can ameliorate obesity-induced metabolic disorders.


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