Fibrin plays a major role in blood clotting and is important in wound healing. In the present study, physiologically clotted fibrin (PF) and calcined bone (CB) both of bovine origin were used in the preparation of a bone graft material with chitosan (C) as a binder. This bone graft (PF-CB) was characterized by stress-strain analysis, X-ray diffraction (XRD) studies, scanning electron microscopy, differential scanning calorimetry, thermogravimetric analysis, and FTIR spectroscopy. Thermal studies revealed that the incorporation of CB into PF did not alter the thermal stability of fibrin, although it affects the total loss percentage. The composition containing 24:1:15 (PF:C:CB) on dry weight basis exhibited maximum compressive strength, and the same composite was used for characterization studies. The XRD studies have shown the amorphous nature of the implant. SEM pictures revealed the heterogeneity and porous nature of the implant. PF in combination with CB is expected to exhibit osteoinductivity because fibrin, the osteoinductive protein, acts as an angiogenic factor, whereas CB provides calcium and phosphate ions that are needed for new bone formation.
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http://dx.doi.org/10.1002/jbm.b.30309 | DOI Listing |
Clin Oral Investig
January 2025
Fujian Key Laboratory of Oral Diseases & Stomatological Key lab of Fujian College and University, School and Hospital of Stomatology, Fujian Medical University, Fuzhou, Fujian Province, 350002, China.
Objective: Both the Masquelet technique (MT) and concentrated growth factors (CGF) reduce early graft loss and improve bone regeneration. This study aims to explore the efficacy of combining MT with CGF for mandibular defect repair by characterizing the induced membrane and assessing in vivo osteogenesis.
Materials And Methods: Three experimental groups were compared: negative control (NC), MT, and Masquelet combined with CGF (MTC).
Musculoskelet Surg
January 2025
Department of Orthopaedics and Trauma, National Orthopaedic Hospital, Enugu, Nigeria.
Int J Oral Maxillofac Surg
January 2025
Division of Maxillofacial Surgery, Department of Surgery, AZ Sint-Jan Brugge AV, Bruges, Belgium; Oral and Maxillofacial Surgery Unit, Division of Surgery, Barzilai Medical Center, Affiliated to Ben-Gurion University of the Negev, Ashkelon, Israel.
Antegonial notching can occur after bilateral sagittal split osteotomy (BSSO) and may lead to unpleasant aesthetic outcomes in both young and older patients. This clinical study presents a new concept to potentially overcome this problem and describes the workflow. Beta-tricalcium phosphate patient-specific gap implants (β-TCP gap-PSIs) are biocompatible and resorbable bone grafts that are placed in the space of the osteotomy gap during orthognathic procedures; they are virtually planned and printed in 3D.
View Article and Find Full Text PDFClin Lung Cancer
December 2024
State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Pulmonary and Critical Care Medicine, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China. Electronic address:
Background: Small cell lung cancer (SCLC) is initially highly sensitive to chemotherapy, which often leads to significant tumor reduction. However, the majority of patients eventually develop resistance, and the disease is further complicated by its "cold" tumor microenvironment, characterized by low tumor immunogenicity and limited CD8+ T cell infiltration. These factors contribute to the poor response to immunotherapy in many cases of extensive-stage SCLC (ES-SCLC).
View Article and Find Full Text PDFZhongguo Xiu Fu Chong Jian Wai Ke Za Zhi
January 2025
Department of Oral and Maxillofacial Surgery, the First Affiliated Hospital of Bengbu Medical University, Bengbu Anhui, 233004, P. R. China.
Objective: To investigate the effectiveness of posterior lateral perforator flap in lower limb combined with free fibula for maxillary tissue defect repair.
Methods: Between December 2018 and December 2023, 16 patients with the maxillary malignant tumors were admitted. There were 10 males and 6 females, with an average age of 64.
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