This report describes a 61-year-old female with a giant cell tumor of the tendon sheath (GCT-TS). MRI showed that an elliptical abnormal signal was observed over the infrapatellar region of the right knee. We directly...This report describes a 61-year-old female with a giant cell tumor of the tendon sheath (GCT-TS). MRI showed that an elliptical abnormal signal was observed over the infrapatellar region of the right knee. We directly do arthroscopy to remove the tumor. An oval irregular mass of about 2.0 cm × 1.5 cm × 1 cm in the right knee joint was found. It was hard and had a dark red surface and the pedicle of the mass was connected with the joint capsule and infrapatellar fat pad. Nodular GCT-TS occurs less frequently in large joints than the small joints of the fingers and toes. The current report demonstrates the unique characteristics of the GCT-TS that extends around the ankle and invades the knee and proximal humerus.展开更多
Objective: In vitro comparison of chondrogenic differentiation ability of bone marrow extracted mesenchymal stem cells (MSCs) and buffy coat. Methods: MSCs of New Zealand white rabbits were cultured in vitro and adher...Objective: In vitro comparison of chondrogenic differentiation ability of bone marrow extracted mesenchymal stem cells (MSCs) and buffy coat. Methods: MSCs of New Zealand white rabbits were cultured in vitro and adherent cells were passaged. The cells were inoculated on polyglycolic acid (PGA) scaffold (3 mm in diameter and 2 mm in height) liquid for 21 days. Under the same conditions, without subculture, buffy coat was directly inoculated into the cell scaffold. The degree of chondrogenic differentiation was compared by Safranin-Ostaining, histological scoring and biochemical functional detection. Results: The chondrogenic differentiation ability of the buffy coat group was better than that of the MSC group. Safranin-Ostain was stronger in buffy coat group than in MSC group. The Bern Score was also higher in the buffy coat group than in the MSC group and the total amount of sulfated glycosaminoglycans (GAGs) in buffy coat group was higher than that in MSC group. Conclusion: The chondrogenic differentiation ability of buffy coat is higher than that of MSC. Through this result, it was found buffy coat can also differentiate into sub-cartilage without stimulating growth factor. Thus, buffy coat can make a great source in artificial cartilage engineering.展开更多
Cartilage injury is an important cause of osteoarthritis;however, there is no effective method of cartilage regeneration at present. Therefore, it would be of great value to explore and develop new methods of cartilag...Cartilage injury is an important cause of osteoarthritis;however, there is no effective method of cartilage regeneration at present. Therefore, it would be of great value to explore and develop new methods of cartilage regeneration. In recent years, it has become a hot topic on repairing damaged cartilage by using tissue engineered cartilage domestic and abroad. It’s the key factor to success for getting cell source which is effective, applicable and easy to obtain in the technology of cartilage tissue engineering filed. This article summarizes the research progress of bone marrow extract buffy coat in cartilage tissue engineering.展开更多
文摘This report describes a 61-year-old female with a giant cell tumor of the tendon sheath (GCT-TS). MRI showed that an elliptical abnormal signal was observed over the infrapatellar region of the right knee. We directly do arthroscopy to remove the tumor. An oval irregular mass of about 2.0 cm × 1.5 cm × 1 cm in the right knee joint was found. It was hard and had a dark red surface and the pedicle of the mass was connected with the joint capsule and infrapatellar fat pad. Nodular GCT-TS occurs less frequently in large joints than the small joints of the fingers and toes. The current report demonstrates the unique characteristics of the GCT-TS that extends around the ankle and invades the knee and proximal humerus.
文摘Objective: In vitro comparison of chondrogenic differentiation ability of bone marrow extracted mesenchymal stem cells (MSCs) and buffy coat. Methods: MSCs of New Zealand white rabbits were cultured in vitro and adherent cells were passaged. The cells were inoculated on polyglycolic acid (PGA) scaffold (3 mm in diameter and 2 mm in height) liquid for 21 days. Under the same conditions, without subculture, buffy coat was directly inoculated into the cell scaffold. The degree of chondrogenic differentiation was compared by Safranin-Ostaining, histological scoring and biochemical functional detection. Results: The chondrogenic differentiation ability of the buffy coat group was better than that of the MSC group. Safranin-Ostain was stronger in buffy coat group than in MSC group. The Bern Score was also higher in the buffy coat group than in the MSC group and the total amount of sulfated glycosaminoglycans (GAGs) in buffy coat group was higher than that in MSC group. Conclusion: The chondrogenic differentiation ability of buffy coat is higher than that of MSC. Through this result, it was found buffy coat can also differentiate into sub-cartilage without stimulating growth factor. Thus, buffy coat can make a great source in artificial cartilage engineering.
文摘Cartilage injury is an important cause of osteoarthritis;however, there is no effective method of cartilage regeneration at present. Therefore, it would be of great value to explore and develop new methods of cartilage regeneration. In recent years, it has become a hot topic on repairing damaged cartilage by using tissue engineered cartilage domestic and abroad. It’s the key factor to success for getting cell source which is effective, applicable and easy to obtain in the technology of cartilage tissue engineering filed. This article summarizes the research progress of bone marrow extract buffy coat in cartilage tissue engineering.
