scholarly journals Abnormal subchondral bone remodeling and its association with articular cartilage degradation in knees of type 2 diabetes patients

Bone Research ◽  
2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Yan Chen ◽  
Yong-Can Huang ◽  
Chun Hoi Yan ◽  
Kwong Yuen Chiu ◽  
Qingjun Wei ◽  
...  
Cells ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 927 ◽  
Author(s):  
Szu-Yu Chien ◽  
Chun-Hao Tsai ◽  
Shan-Chi Liu ◽  
Chien-Chung Huang ◽  
Tzu-Hung Lin ◽  
...  

Osteoarthritis (OA) is a chronic inflammatory and progressive joint disease that results in cartilage degradation and subchondral bone remodeling. The proinflammatory cytokine interleukin 1 beta (IL-1β) is abundantly expressed in OA and plays a crucial role in cartilage remodeling, although its role in the activity of chondrocytes in cartilage and subchondral remodeling remains unclear. In this study, stimulating chondrogenic ATDC5 cells with IL-1β increased the levels of bone morphogenetic protein 2 (BMP-2), promoted articular cartilage degradation, and enhanced structural remodeling. Immunohistochemistry staining and microcomputed tomography imaging of the subchondral trabecular bone region in the experimental OA rat model revealed that the OA disease promotes levels of IL-1β, BMP-2, and matrix metalloproteinase 13 (MMP-13) expression in the articular cartilage and enhances subchondral bone remodeling. The intra-articular injection of Noggin protein (a BMP-2 inhibitor) attenuated subchondral bone remodeling and disease progression in OA rats. We also found that IL-1β increased BMP-2 expression by activating the mitogen-activated protein kinase (MEK), extracellular signal-regulated kinase (ERK), and specificity protein 1 (Sp1) signaling pathways. We conclude that IL-1β promotes BMP-2 expression in chondrocytes via the MEK/ERK/Sp1 signaling pathways. The administration of Noggin protein reduces the expression of IL-1β and BMP-2, which prevents cartilage degeneration and OA development.


2019 ◽  
Vol 35 (3) ◽  
pp. 505-515 ◽  
Author(s):  
Linyang Chu ◽  
Xuqiang Liu ◽  
Zihao He ◽  
Xuequan Han ◽  
Mengning Yan ◽  
...  

World Science ◽  
2020 ◽  
Vol 2 (6(58)) ◽  
pp. 45-53
Author(s):  
Ivaskiva K. Yu. ◽  
Orlenko V. L. ◽  
Dobrovynska O. V.

The aim of study was to investigate markers of connective tissue metabolism (COMP level) and indicators that reflect the synthetic and catabolic phases of the metabolism of the main components of connective tissue - collagen and glycosaminoglycans in patients with diabetic arthropathy.The study involved 87 patients with diabetes. Patients were examined using a visual analogue scale of the Leken index and WOMAK. Cartilage oligomeric matrix Protein (COMP) was determined using enzyme immunoassay.Results. The presence of diabetic arthropathy was detected in 78% of patients with type 1 diabetes and in 80% of patients with type 2 diabetes. In the vast majority of patients, the joints of the upper extremities were involved in the pathological process. A direct correlation was established between the presence of arthropathy and the COMP level (r = 0.76, p = 0.001), the Leken index (r = 0.76, p = 0.001), YOUR scale (r = 0.88 , p = 0.001) and WOMAK (R = 0.88, p = 0.001). Patients with type 1 diabetes with joint damage are characterized by a compensatory increase in the synthesis of subchondral bone in response to increased collagen breakdown. For patients with type 1 diabetes with joint damage is characterized by a compensatory increase in subchondral bone synthesis in response to increased collagen breakdown.Conclusions: The results suggest that arthropathy in patients with type 1 and type 2 diabetes is characterized by an increase in the cartilage degradation marker in direct proportion to the severity and number of affected joints.


2020 ◽  
Vol 11 (1) ◽  
pp. 7-10
Author(s):  
Khadiza Begum ◽  
Fahmida Islam ◽  
Farjana Aktar ◽  
Murshida Aziz ◽  
Tohfa E Ayub Tahiya

Background: In recent times much is talked about of serum ferritin, an acute phase reactant a marker of iron stores in the body and its association with diabetes mellitus. Studies implicate that increased body iron stores and subclinical hemochromatosis has been associated with the development of glucose intolerance, type 2 diabetes and its micro as well as macrovascular complications. Material & Methods: This study was carried out to examine and to observe for any relationship between serum ferritin with Type 2 diabetes mellitus. Our study populations were included 163. Among them 81 type 2 diabetes patients as a case (M=49,F=32, mean 44.68 age in years)and 82 normal healthy individual as a control ( M=35, F=47 , mean 34.71 in years). Results: Majority were healthy outpatients who had come for regular checkup and were matched with controls. Serum ferritin and FBS were estimated and other investigations. Results showed that although Serum ferritin was in the normal range value it was increased in type 2 diabetes patients than in controls and was statistically significant, we did get a positive correlation with duration of diabetes. It can be concluded that there were positive associations between serum ferritin and FBG, age, sex among study groups. Conclusion: In conclusion our study shows that there is significant correlation between increased serum ferritin in diabetes compared to individuals with normal blood sugars in this part and hyper ferritinemia may be one of the causes for development of insulin resistance before overt diabetes. Anwer Khan Modern Medical College Journal Vol. 11, No. 1: Jan 2020, P 7-10


Author(s):  
Ansumali Joshi ◽  
Priyadarshini Yonzon ◽  
Luna Thapa ◽  
Ritika Karki

Diabetes ◽  
2019 ◽  
Vol 68 (Supplement 1) ◽  
pp. 1158-P
Author(s):  
LI CHEN ◽  
LINGGE FENG ◽  
CUI TANG ◽  
YI ZHANG

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