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Effects of adipose allograft matrix on viability of humeral head cartilage and rotator cuff tendon.
BMC Musculoskelet Disord
January 2025
Department of Clinical Sciences, College of Veterinary Medicine, Columbus, OH, USA.
Background: Rotator cuff repairs may fail because of compromised blood supply, suture anchor pullout, or poor fixation to bone. To augment the repairs and promote healing of the tears, orthobiologics, such a platelet-rich plasma (PRP), and biologic scaffolds have been applied with mixed results. Adipose allograft matrix (AAM), which recruits native cells to damaged tissues, may also be a potential treatment for rotator cuff tears.
View Article and Find Full Text PDFBiomimetic bone cartilage scaffolds based on trilayer methacrylated hydroxyapatite/GelMA composites for full-thickness osteochondral regeneration.
Int J Biol Macromol
January 2025
Department of Pharmaceutical Analysis, Higher Educational Key Laboratory for Nano Biomedical Technology of Fujian Province, The School of Pharmacy, Fujian Medical University, Fuzhou 350122, China. Electronic address:
Since cartilage injury is often accompanied by subchondral bone damage, conventional single-phase materials cannot accurately simulate the osteochondral structure or repair osteochondral injury. In this work, a gradient gelatin-methacryloyl (GelMA) hydrogel scaffold was constructed by a layer-by-layer stacking method to realize full-thickness regeneration of cartilage, calcified cartilage and subchondral bone. Of note, to surmount the inadequate mechanical property of GelMA hydrogel, nanohydroxyapatite (nHA) was incorporated and further functionalized with hydroxyethyl methacrylate (nHA-hydroxyethyl methacrylate, nHAMA) to enhance the interfacial adhesion with the hydrogel, resulting in better mechanical strength akin to human bone.
View Article and Find Full Text PDFCTLA4-Ig reduces muscle fiber damage in a model of Duchenne muscular dystrophy by attenuating pro-inflammatory gene expression in myeloid lineage cells.
Am J Pathol
January 2025
Department of Integrative Biology and Physiology, University of California, Los Angeles, CA 90095-1606; Molecular, Cellular & Integrative Physiology Program, University of California, Los Angeles, CA 90095-1606; Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, University of California, Los Angeles, CA 90095. Electronic address:
Duchenne muscular dystrophy (DMD) is a lethal, muscle-wasting, genetic disease that is greatly amplified by an immune response to the diseased muscles. The mdx mouse model of DMD was used to test whether the pathology can be reduced by treatments with a CTLA4-Ig fusion protein that blocks costimulatory signals required for activation of T-cells. CTLA4-Ig treatments reduced mdx sarcolemma lesions and reduced the numbers of activated T-cells, macrophages and antigen presenting cells in mdx muscle and reduced macrophage invasion into muscle fibers.
View Article and Find Full Text PDFIntraoperative Facet Joint Block Reduces Pain After Oblique Lumbar Interbody Fusion: A Double-Blinded, Randomized, Placebo-Controlled Clinical Trial.
J Bone Joint Surg Am
November 2024
Department of Neurosurgery, Bokwang Hospital, Daegu, Republic of Korea.
Background: Oblique lumbar interbody fusion (OLIF) results in less tissue damage than in other surgeries, but immediate postoperative pain occurs. Notably, facet joint widening occurs in the vertebral body after OLIF. We hypothesized that the application of a facet joint block to the area of widening would relieve facet joint pain.
View Article and Find Full Text PDFNovel triangle papilla access approach for interdental bone defect regeneration: A case study.
Clin Adv Periodontics
January 2025
Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.
Background: Successful periodontal regeneration depends on primary wound closure and interdental papilla preservation. In this case study, we introduce a novel triangle papilla access approach (T-PAA) performed under a surgical microscope for treating interdental bone defects. In this novel approach, buccal incisions were used to access root surfaces and bone defects, avoiding interdental papilla incisions and preventing papillary collapse and necrosis.
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