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... Chronic non-healing diabetic wounds and ulcers can be fatal, lead to amputations, and remain a major challenge to medical, and health care sectors. Susceptibility to infection and impaired angiogenesis are two central reasons for the clinical consequences associated with chronic non-healing diabetic wounds. Herein, we successfully developed calcium ion (Ca²⁺) cross-linked sodium alginate (SA) hydr ...
... In the present research, we developed zinc oxide nanoparticles (ZnO-NPs) based surgical sutures for the accelerated wound healing process. Color change from transparent to dark, surface plasmon response with a peak at 270 nm and infra-red spectra with ZnO-bond stretches at 489.6831 cm⁻¹ confirmed the synthesis of NPs. Rod shape ZnO-NPs with an ideal size of 70 ± 03 nm were noted with uniform distr ...
... Escherichia coli (E. coli) is the most common Gram-negative bacterium causing infection of the uterus or mammary gland and is one of the major causes of infertility in livestock. In those animals affected by E. coli driven LPS-mediated infections, fertility problems occur in part due to disrupted follicular and luteal functionality. However, the molecular mechanisms by which LPS induces inflammati ...
... The present paper describes a novel multi-functional Calotropis gigantea (CG) fabric with durable antibacterial property and comfortable wearability for various applications. First, antibacterial microspheres (AMs) were prepared by self-assembly of silk fibroin (SF), chitosan (CS) and nano-silver microspheres (NSMs). Oxygen low-temperature plasma (OLTP) treatment was used to improve the adhesion b ...
... In this study, doxycycline (DOXY)-loaded diatom biosilica (DBs) were developed and coated with hydroxybutyl chitosan (HBC) hydrogel for wound healing. The HBC/DBs/DOXY composite hydrogel had significant inhibitory activity against S. aureus (100%) and E. coli (98%). In addition, the HBC/DBs/DOXY hydrogel showed minimum cytotoxicity on L929 cells in vitro, indicating the great biocompatibility of t ...
Christian Verónica Pérez-Contreras; Jesús Alvarado-Flores; Alejandra Orona-Ortiz; José Luis Balderas-López; Rosa María Salgado; Noé Zacaula-Juárez; Edgar Krötzsch; Andrés Navarrete
... The bark of Amphipterygium adstringens Schiede ex Schltdl (Anacardiaceae), commonly known as ‘cuachalalate’ has been used in Mexican traditional medicine for the treatment of skin and oral lesions, gastric ulcers, and other conditions. The use as wound healing of the bark of this plant has been known since before the Spanish conquest of Mexico. Its uses are mentioned in the first writings of the S ...
... Bacterial infection raises serious concerns in tissue repair settings involved with implantable biomaterials, devastating the regenerative process and even life-threatening. When hard tissues are infected with bacteria (called ‘osteomyelitis’), often the cases in open fracture or chronic inflammation, a complete restoration of regenerative capacity is significantly challenging even with highly-dos ...
... Galectin-3 (Gal-3), a member of the β-galactoside-binding lectin family, involved in tumor angiogenesis and metastasis, is considered a diagnostic biomarker and a promising treatment target for early cancer. Gal-3 recognizes the poly-N-acetyllactosamine (poly-LacNAc)-based carbohydrate motifs of glycoproteins and glycolipids. To date, protein glycosylation with poly-LacNAc has been mainly achieved ...
... Catalytic conversion of hydrogen peroxide (H₂O₂) to more toxic hydroxyl radicals (•OH) is a good choice for sterilization and anti-infection, but endogenous H₂O₂ is insufficient to achieve satisfactory sterilization efficacy. Despite great efforts, designing and developing antimicrobial materials that specifically and effectively self-supply H₂O₂ at the wound site remain as tremendous challenges. ...
... Angiogenesis plays a key role in tumor growth and metastasis. Current antiangiogenic drugs have shown poor clinical benefit making the development of new antiangiogenic agents a clinical need. In this work, we optimized the production of a recombinant fusion protein derived from vasostatin-30 (VS30) and vasoinhibin (Vi), named VS_VI, using Escherichia coli and the central composite experimental de ...
... The diabetic wound is easily to develop into a chronic wound because of the extremely serious and complex inflammatory microenvironment including biofilm formation, over-expressed reactive oxygen species (ROS), hypoxia and insufficiency of nitric oxide (NO) synthesis. In this work, a multifunctional hydrogel was designed and prepared by crosslinking hydrophilic poly (PEGMA-co-GMA-co-AAm) (PPGA) po ...
... Frequent dressing changes can result in secondary wound damage. Therefore, it is of great significance to construct a wound dressing that can be used for a long time without changing. Here, a double-network hydrogel was synthesized through hydrogen bonding interactions of tea polyphenol (TP)/glycerol with photo-crosslinked N-acryloyl glycinamide (NAGA), gelatin methacrylate (GelMA), and nanoclay h ...
... Metalloproteinase tissue inhibitors (TIMPs) have the activity of inhibiting matrix metalloproteinases (MMPs), which can promote cell growth, bind to the matrix, inhibit angiogenesis, and play a key role in extracellular matrix (ECM) metabolism regulation. In this study, TIMP-1, 2 from Hyriopsis cumingii (designated as HcTIMP-1, 2) were cloned and identified. Full-length cDNA of HcTIMP-1, 2 was 116 ...
... We report a one-pot, room-temperature, morphology-controlled synthesis of titanium oxide (TiOₓ)–gold nanocomposites (TiOₓ–Au NCs) using HAuCl₄ and TiCl₃ as precursors, and catechin as reducing agent. TiOₓ–Au NCs have a range of morphologies from star-like to urchin-like shape depending on the concentration of TiCl₃ in the reaction mixture. The urchin-shaped TiOₓ–Au NCs exhibited excellent photocat ...
... Zinc oxide nanoparticles (ZnO NPs) are known for their antibacterial, antioxidant, and anti-inflammatory activities. Moreover, ZnO NPs can stimulate cell migration, re-epithelialization, and angiogenesis. All these attributes are highly relevant to wound healing. Local administration of ZnO NPs to the wound can be achieved through electrospun nanofibers. We hypothesized that the use of poly(lactid ...
... Dysbiosis of the gut microbiome has been associated with the development of colorectal cancer (CRC). Gut microbiota is involved in the metabolic transformations of dietary components into oncometabolites and tumor-suppressive metabolites that in turn affect CRC development. In a healthy colon, the major of microbial metabolism is saccharolytic fermentation pathways. The alpha-bug hypothesis sugges ...
Escherichia coli; Staphylococcus aureus; angiogenesis; antibacterial properties; bone formation; bone marrow; bone transplantation; chickens; chorioallantoic membrane; dexamethasone; human umbilical vein endothelial cells; hydrophilicity; mesenchymal stromal cells; models; polymers; rats
Abstract:
... Polyetheretherketone (PEEK) is a biocompatible polymer, but its clinical application is largely limited due to its inert surface. To solve this problem, a multifunctional PEEK implant is urgently fabricated. In this work, a dual-metal–organic framework (Zn–Mg-MOF74) coating is bonded to PEEK using a mussel-inspired polydopamine interlayer to prepare the coating, and then, dexamethasone (DEX) is lo ...
... Recently, the incidence of chronic diabetic wounds increases continuously, and the existing clinical treatment is less effective. Thus, it is an urgent need to solve these problems for better clinical treatment effects. Herein, we prepared a brand-new tailored recombinant human collagen type III (rhCol III) and constructed a multifunctional microenvironment-responsive hydrogel carrier based on mul ...
... Wound healing is a dynamic and intricate process, and newly dressings are urgently needed to promote wound healing over the multiple stages. Herein, two water-soluble adenine-modified chitosan (CS-A) derivatives were synthesized in aqueous solutions and freeze-dried to obtain porous sponge-like dressings. The novel derivatives displayed antibacterial activities against S. aureus and E. coli. Moreo ...
... Quick and effective sterilization of drug-resistant bacteria inevitably became an ever-growing global challenge. In this study, a multifunctional composite (PDA/Cu-CS) hydrogel mainly composed of polydopamine (PDA) and copper-doped calcium silicate ceramic (Cu-CS) was prepared. It was confirmed that PDA/copper (PDA/Cu) complexing in the composite hydrogel played a key role in enhancing the phototh ...