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Bone & Joint Research
Vol. 13, Issue 7 | Pages 321 - 331
3 Jul 2024
Naito T Yamanaka Y Tokuda K Sato N Tajima T Tsukamoto M Suzuki H Kawasaki M Nakamura E Sakai A

Aims

The antidiabetic agent metformin inhibits fibrosis in various organs. This study aims to elucidate the effects of hyperglycaemia and metformin on knee joint capsule fibrosis in mice.

Methods

Eight-week-old wild-type (WT) and type 2 diabetic (db/db) mice were divided into four groups without or with metformin treatment (WT met(-/+), Db met(-/+)). Mice received daily intraperitoneal administration of metformin and were killed at 12 and 14 weeks of age. Fibrosis morphology and its related genes and proteins were evaluated. Fibroblasts were extracted from the capsules of 14-week-old mice, and the expression of fibrosis-related genes in response to glucose and metformin was evaluated in vitro.


Bone & Joint Research
Vol. 3, Issue 12 | Pages 328 - 334
1 Dec 2014
Harada Y Kokubu T Mifune Y Inui A Sakata R Muto T Takase F Kurosaka M

Objectives

To investigate the appropriate dose and interval for the administration of triamcinolone acetonide (TA) in treating tendinopathy to avoid adverse effects such as tendon degeneration and rupture.

Methods

Human rotator cuff-derived cells were cultured using three media: regular medium (control), regular medium with 0.1 mg/mL of TA (low TA group), and with 1.0 mg/mL of TA (high TA group). The cell morphology, apoptosis, and viability were assessed at designated time points.