OBJECTIVES Circulating exosomes represent novel biomarkers for multiple diseases. In this study, we investigated whether circulating exosome levels could be used as a diagnostic biomarker for steroid-induced osteonecrosis of the femoral head (ONFH). METHODS We assessed the serum exosome level of 85 patients with steroid-induced ONFH and 115 healthy donors by Nanosight detection. We then asses...

Tumor necrosis factor receptor-associated factor 6 (TRAF6), a unique E3 ubiquitin ligase and adaptor protein, is involved in activation of various signaling cascades. Recent studies identify TRAF6 as one of the novel regulators of skeletal muscle atrophy. The role of TRAF6 in glucocorticoid-induced muscle atrophy, however, remains to be elucidated. In this study, we show that TRAF6 and its down...

Two women with connective tissue disease developed a characteristic steroid-induced myopathy. Reduced maximal transrespiratory pressures indicated reduced respiratory muscle strength. Gradual steroid dosage tapering resulted in prompt clinical improvement and marked increases in respiratory muscle strength, maximal inspiratory pressure increasing by 33 percent in one patient and by 70 percent i...

objective a 4-month-old female with osteogenesis imperfecta (oi) type ii was admitted in picu of our center due to severe respiratory distress and fever with a diagnosis of severe pneumonia, and mechanical ventilation was initiated. due to severe hypotonia, ncv and emg were performed, and spinal muscular atrophy (sma) type i was diagnosed.

Steroid-induced osteonecrosis of the femoral head (steroid-induced ONFH) is an avascular necrosis disease of bone. Tetramethylpyrazine (TMP), with significant vascular protective properties, has been widely used for the treatments of ischemic neural disorders and cardiovascular diseases. However, its role in the treatment of steroid-induced ONFH has not been evaluated. In this study, our result...

Dysbiosis resulting from a high fat/high sucrose diet (HFHSD) causes sarcopenia by decreasing the production of short-chain fatty acids (SCFAs). This study investigated effects miso, traditional fermented soybean food in Japan, on muscle mass atrophy. Eight week old male C57BL/6J mice were fed HFHSD with or without miso for 12 weeks. A increased soleus weights (p <0.05) and reduced intraperiton...

Risperidone treatment in a steroid-induced psychosis case Steroids have been used effectively for many years to treat a wide variety of both acute and chronic medical conditions. Despite some well-known side effects, the association of psychiatric disorders with the use of these drugs has not been well established and documented. We describe a case of a 46-year-old man with a recent diagnosis o...

This study was designed to investigate whether the administration of the anabolic steroid nandrolone decanoate is able to antagonize the loss in diaphragm function induced by long-term administration of a low-dose of methylprednisolone in emphysematous hamsters. Normal and emphysematous male hamsters were randomized to receive either saline or methylprednisolone 0.2 mg x kg(-1) x day(-1) for 9 ...

Dehydroepiandrosterone (DHEA) is an abundant steroid hormone, and its mechanism of action is yet to be determined. The aim of this study was to elucidate the importance of androgen receptors (ARs) and estrogen receptors (ERs) for DHEA function. Orchidectomized C57BL/6 mice were treated with DHEA, DHT, 17β-estradiol-3-benzoate (E2), or vehicle. Orchidectomized AR-deficient (ARKO) mice and wild-t...

Prolonged periods of muscular inactivity (e.g., limb immobilization) result in skeletal muscle atrophy. Although it is established that reactive oxygen species (ROS) play a role in inactivity-induced skeletal muscle atrophy, the cellular pathway(s) responsible for inactivity-induced ROS production remain(s) unclear. To investigate this important issue, we tested the hypothesis that elevated mit...