Hemostasis is a major challenge in surgical procedures and traumas. Conventional hemostatic methods have limited efficacy and may cause additional tissue damage. In this study, we designed a novel hemostatic agent based on the in situ gel formation of gelatin cross-linked by a novel microbial transglutaminase (mTGase), in which the amino acid sequences differed from commercial mTGases. The new hemostatic agent showed the same biochemical crosslinking chemistry as the final stages of the blood coagulation cascade while using gelatin as a "structural" protein (rather than fibrin) and a calcium-independent mTGase as the crosslinking catalyst (rather than factor XIIIa). In rat liver hemostasis models, the hemostatic agent not only showed a similar hemostatic effect as that of SURGIFLO (positive control), but also stronger adhesion strength and elasticity than SURGIFLO. Therefore, this biomimetic gelatin-mTGase mix hemostatic is a novel and effective surgical sealant.
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http://dx.doi.org/10.1007/s11427-015-9019-x | DOI Listing |
Biopolymers
January 2025
School of Pharmacy and Bioengineering, Keele University, Keele, UK.
Cryogels were fabricated by combining polyvinyl alcohol (PVA) and chitosan of varying molecular weights (Mw). In this study, the effects of chitosan Mw, types of boron-containing molecules on network formation, and boron release rate in resulted cryogels were investigated. The PVA/chitosan blend maintained a constant 4.
View Article and Find Full Text PDFBMC Surg
January 2025
Department of Orthopedics, Taizhou Hospital of Zhejiang Province Affiliated to Wenzhou Medical University, Taizhou, Zhejiang, 317000, China.
Background: The relative efficacies of topical and intravenous tranexamic acid (TXA) in spinal surgery remain controversial. This meta-analysis aimed to compare the efficacy and safety of topical versus intravenous TXA in spinal surgery, with a particular focus on the impacts on intraoperative blood loss (IBL) and associated outcomes.
Methods: We searched the PubMed, EMBASE, Medline, and Cochrane Library databases to identify all literature related to topical and intravenous TXA in spinal surgery.
Clin Appl Thromb Hemost
January 2025
Department of Nursing, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
Introduction: Preoperative patients with knee osteoarthritis have a significantly increased risk of venous thromboembolism (VTE). While the Caprini risk assessment model offers some clinical guidance in predicting deep vein thrombosis (DVT), it has a relatively low predictive accuracy. Enhancing the model by integrating biomarkers, such as D-dimers, can potentially improve its accuracy.
View Article and Find Full Text PDFInt J Breast Cancer
December 2024
College of Medicine, King Faisal University, Al-Ahsa City, Eastern Province, Saudi Arabia.
This study is aimed at evaluating the effectiveness of TachoSil in controlling lymphatic leakage in breast cancer patients undergoing axillary dissection. By examining its ability to reduce postsurgical lymphatic drainage, the study will assess its impact on complications like seroma formation, recovery time, and overall patient outcomes, including quality of life and reduced healthcare costs. Breast cancer patients treated in the Department of Surgical Oncology at King Abdulaziz Medical City were enrolled to receive either TachoSil or undergo drain placement after axillary dissection.
View Article and Find Full Text PDFNagoya J Med Sci
November 2024
Department of Anesthesiology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Postoperative atrial fibrillation complicates 15-40% of cardiac surgery cases and is associated with various adverse health outcomes including high mortality. Although vasopressin administration decreases postoperative atrial fibrillation in on-pump coronary artery bypass grafting, its use in off-pump coronary artery bypass grafting has not been investigated. Therefore, we evaluated the effect of vasopressin use in off-pump coronary artery bypass grafting.
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