Effect of Aging on the Progression of Articular Cartilage Damage in a Rat Osteoarthritis Model
Masanori Watanabe,
Satoshi Kojima,
Keiji Asada,
Itaru Hibino,
Masahiro Hoso
Issue:
Volume 4, Issue 2, March 2018
Pages:
21-25
Received:
28 March 2018
Accepted:
17 April 2018
Published:
10 May 2018
Abstract: This study aimed to investigate and clarify the effect of aging on the progression of cartilage damage using a rat osteoarthritis model. In total, 12 rats, including three rats per age group, were assigned to the experimental group, and two rats (one 3 and 18 months old each) were assigned to the control group. In the experimental group, joint instability was induced using the destabilization of the medial meniscus model. After completion of the 4-week experimental period, the bilateral knee joints were harvested and the histological changes in the articular structures of the joints were observed using a light microscope. Medial dislocation of the medial meniscus, low staining of the cartilaginous substrate on the tibial side localized around the medial meniscus tip, and irregularities and fibrillation of the superficial layer of the cartilage on the tibial side were observed in all experimental age groups. No significant age-related differences were observed in the degree of observed findings and the score of cartilage degeneration. The results indicate that aging does not affect the early stages of progression of cartilage damage.
Abstract: This study aimed to investigate and clarify the effect of aging on the progression of cartilage damage using a rat osteoarthritis model. In total, 12 rats, including three rats per age group, were assigned to the experimental group, and two rats (one 3 and 18 months old each) were assigned to the control group. In the experimental group, joint inst...
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Nonalcoholic Fatty Liver Disease and the Risk of Incident Chronic Kidney Disease: A Meta-Analysis
Yichao Zheng,
Yifen Wu,
Yadong Lai,
Hanxu Zhuang,
Guian Zheng
Issue:
Volume 4, Issue 2, March 2018
Pages:
26-31
Received:
14 April 2018
Accepted:
2 May 2018
Published:
19 May 2018
Abstract: Nonalcoholic fatty liver disease (NAFLD) is a multisystem disease that affects many extrahepatic-organ systems. In this respect, several studies have suggested the possible association between NAFLD and the risk of incident chronic kidney disease (CKD). However, the extent of this association remains unclear. Thus the present meta-analysis was conducted to better characterize this association. In the meta-analysis, a comprehensive search of the databases of MEDLINE, EMBASE, Web of Science and Cochran Library was carried out from inception through September 2017. All large observational studies that investigated the association between NAFLD and the risk of incident CKD were included. The incident CKD was defined as occurrence of estimated glomerular filtration rate (eGFR) < 60ml/min/1.73m2 and/or overt proteinuria. The pooled hazard ratio (HR) with 95% confidence intervals (CIs) was calculated using the random-effects model. Data were extracted from 5 large observational studies involving 57,341 adult individuals (41.3% with NAFLD) with 1,886 cases of incident CKD. NAFLD is significantly associated with increased risk of incident CKD (HR 1.40, 95%CI 1.22-1.61). The statistical heterogeneity of included studies was low, with an I2=25.4%. In conclusion, the present meta-analysis confirms the association between NAFLD and the risk of incident CKD.
Abstract: Nonalcoholic fatty liver disease (NAFLD) is a multisystem disease that affects many extrahepatic-organ systems. In this respect, several studies have suggested the possible association between NAFLD and the risk of incident chronic kidney disease (CKD). However, the extent of this association remains unclear. Thus the present meta-analysis was cond...
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