Osteoarthritis and sports injuries often lead to cartilage defects. How to promote its repair and rebuild the smooth cartilage surface has been a hot spot of research in recent years. Kartogenin (KGN), a small molecule discovered in recent years, has been shown to promote the proliferation and chondrogenic differentiation of mesenchymal stem cells (MSCs). As more and more studies have been conducted on KGN, its mechanism of action has been gradually revealed. However, KGN is insoluble in water and therefore easily removed by body fluids. In order to address such issues, a number of systems for efficient intra-articular delivery of KGN have been developed. In addition, due to the complex pathology of cartilage repair, KGN is often used in combination with other drugs to target different stages. In addition, with the rapid development of tissue engineering, scholars have combined KGN with various scaffolds by physical or chemical methods. In this paper, we firstly introduce the general properties of KGN followed by a review of the latest advances in the intra-articular delivery modes of KGN. Finally, we discuss the prospects for the application of KGN in cartilage regeneration, which is aimed at providing a new idea and target for the treatment of cartilage defects.
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http://dx.doi.org/10.1039/d4ra06558a | DOI Listing |
Sci Rep
January 2025
Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Microtia is a congenital malformation characterized by underdevelopment of the external ear. While chondrocyte dysfunction has been implicated in microtia, the specific cellular abnormalities remain poorly understood. This study aimed to investigate mitochondrial dysfunction in microtia chondrocytes using single-cell RNA sequencing.
View Article and Find Full Text PDFBone
January 2025
Department of Research and Development, Schulthess Klinik, Lengghalde 2, 8008 Zürich, Switzerland. Electronic address:
Osteoarthritis (OA) is associated with sclerosis, a thickening of the subchondral bone plate, yet little is known about bone adaptations around full-thickness cartilage defects in severe knee OA, particularly beneath bone-on-bone wear grooves. This high-resolution micro-computed tomography (microCT) study aimed to quantify subchondral bone microstructure relative to cartilage defect location, distance from the joint space, and groove depth. Ten tibial plateaus with full-thickness cartilage defects were microCT-scanned to determine defect location and size.
View Article and Find Full Text PDFCureus
December 2024
Orthopaedics, King Saud University, Riyadh, SAU.
Osteochondritis dissecans is a rare condition characterized by the deterioration of a small area of bone and cartilage without infection. Its exact cause is unclear, though factors such as abnormal bone development, joint pressure, repetitive injuries, inadequate blood supply, and genetic links have been observed. In this case, a 27-year-old woman experienced chronic right knee pain following a twisting injury, which led to reduced mobility and mild pain.
View Article and Find Full Text PDFGenes Dis
March 2025
Pediatric Orthopaedic Hospital, Honghui Hospital, Xi'an Jiaotong University, Xi'an, Shaanxi 710032, China.
Although the pathogenesis and mechanism of congenital skeletal dysplasia are better understood, progress in drug development and intervention research remains limited. Here we report that melatonin treatment elicits a mitigating effect on skeletal abnormalities caused by deficiency. In addition to our previous finding of endoplasmic reticulum stress upon deficiency, we found calcium (Ca) overload jointly contributed to -associated chondrodysplasias.
View Article and Find Full Text PDFAm J Sports Med
January 2025
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York, USA.
Background: Failure of primary cartilage restoration procedures of the knee that proceed to necessitating revision cartilage procedures represent a challenging clinical scenario with variable outcomes reported in previous literature.
Purpose: To perform a systematic review and meta-analysis of clinical outcomes and adverse events after revision cartilage restoration procedures of the knee for failed primary cartilage procedures.
Study Design: Systematic review and meta-analysis; Level of evidence, 4.
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