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Öğe ANTI-INFLAMMATORY DRUG-LOADED BIOPOLYMERIC SPONGIOUS MATRICES WITH THERAPEUTIC PERSPECTIVES IN BURNS TREATMENT(Soc Stinte Farmaceutice Romania, 2018) Udeanu, Denisa Ioana; Kaya, Madalina Georgiana Albu; Ghica, Mihaela Violeta; Marin, Stefania; Marin, Maria Minodora; Kaya, Durmus Alpaslan; Popa, LacramioaraThe most important goals of burns treatment suppose a fast skin regeneration to promote healing, the initial pain reduction and minimal scars forming. The development of new biopolymers-based wound dressings to ensure a proper healing process is nowadays a major challenge considering the incidence and consequences of burns. Our previously designed anti-inflammatory drug-loaded biopolymeric spongious matrices were initially tested by in vitro analysis and revealed proper morphological structure, swelling ability, degradation profiles and drug release patterns, indicating their potential use for burns treatment. Thus, the study aims to evaluate some collagen-sodium carboxymethylcellulose spongious matrices with or without mefenamic acid as non-steroidal anti-inflammatory drug in experimentally induced burns on Wistar rats, a frequently used animal model for the assessment of wounds healing. The treatment with the designed sponges promoted the wound healing compared to the classical treated control group. The sponges with mefenamic acid accelerated the healing process with a faster epithelial regeneration and a minimal scarring in comparison with the formulations containing no anti-inflammatory drug.Öğe Design and evaluation of new wound dressings based on collagen-cellulose derivatives(Elsevier Sci Ltd, 2023) Tudoroiu, Elena-Emilia; Kaya, Madalina Georgiana Albu; Titorencu, Irina; Dinu-Pirvu, Cristina Elena; Marin, Maria Minodora; Rosca, Ana-Maria; Popa, LacramioaraThe purpose of this research was to design and characterize new hydrogels, respectively, their lyophilized forms, spongious matrices, based on collagen and methylcellulose or hydroxyethylcellulose to be used as wound dressings. 1.1% collagen gel was blended with 3% cellulose ethers gels in different ratios. To design the new potential dressings, we evaluated the compatibility of biopolymers through rheological and spectroscopic analyses for hydrogels, respectively spectral, morphological, goniometric, enzymatic, and thermal stability. Rheological measurements indicated that all hydrogels were pseudoplastic, a required property for their manipulation and application. Spectroscopic and spectral analyses showed the conservation of the specific triple helix structure of collagen for samples with 30% cellulose ethers. The morphological evaluation demonstrated that matrices presented hydrophilic and porous structures with proper swelling ability. The thermal and biodegradation study illustrated the increase of matrices' stability with the addition of cellulose ethers gels. Biocompatibility tests showed that none of the tested matrices had any cytotoxic effect and some compositions of collagen and methylcellulose or hydroxyethylcellulose release factors that might promote fibroblasts' proliferation and had no inhibitor effect on fibroblasts migration ability; all these results guarantee the development of a promising wound dressing based on 70% collagen gel and 30% cellulose ethers gels.Öğe DICLOFENAC SPONGIOUS MATRICES BASED ON COLLAGEN AND ALGINATE FOR RELIEVING INJURY PAINS(Incdtp-Icpi, 2018) Draghici, Roxana-Denisa; Marin, Maria Minodora; Ghica, Mihaela Violeta; Kaya, Madalina Georgiana Albu; Anuta, Valentina; Dinu-Pirvu, Cristina; Kaya, Durmus AlpaslanThe sport injuries become more and more frequent so there is a need to discover new solutions for increasing the quality of life for people affected by such wounds. The aim of this study was to obtain a novel NSAID drug delivery system, topical diclofenac spongious matrices based on collagen and alginate for the treatment of injuries and relieving of pain. The samples were analyzed by flow analysis and after their freeze-drying were analyzed by FT-IR and in vitro release of sodium diclofenac.The results obtained from analyses confirmed that diclofenac spongious matrices based on collagen and alginate exhibit proper characteristics for the treatment of injuries and relieving of pain.Öğe Novel Nanocomposite Hydrogels Based on Crosslinked Microbial Polysaccharide as Potential Bioactive Wound Dressings(Mdpi, 2023) Marin, Maria Minodora; Kaya, Madalina Albu; Kaya, Durmus Alpaslan; Constantinescu, Roxana; Trica, Bogdan; Gifu, Ioana Catalina; Alexandrescu, ElviraA multitude of dressings have been developed to promote wound repair, such as membranes, foams, hydrocolloids and hydrogels. In this study, a crosslinked polysaccharide hydrogel was mixed with a bioactive ingredient to synthesize a novel nanocomposite material to be used in wound healing. Variation of the ratio between hydrogel components was followed and its effect was analyzed in regard to swelling, degradation rate and thermo-mechanical behavior. The resulting crosslinked structures were characterized by FTIR and microscopy analyses. The antimicrobial activity of the crosslinked hydrogels loaded with bioactive agent was evaluated using two bacterial strains (Gram-positive Staphylococcus aureus and Gram-negative bacteria Escherichia Coli). All the results showed that the new synthesized biopolymer nanocomposites have adequate properties to be used as antibacterial wound dressings.Öğe Polymer – flufenamic acid delivery systems for injured skin(2022) Marin, Maria Minodora; Ghıca, Mihaela Violeta; Kaya, Durmuş Alpaslan; Udeanu, Denisa Ioana; Kaya, Madalina Albu; Dinu-Pirvu, Cristina-Elena; Popa, LacramıoaraCollagen, the main protein of the body, is extracted in different forms and used as reservoir for drug delivery. The aim of this work was to obtain a drug delivery system based on collagen-dextran matrices cross-linked with glutaraldehyde as support and flufenamic acid and/or microcapsules with flufenamic acid as drug. The flufenamic acid was encapsulated in polymeric microcapsules consisting in gelatin, alginate, and sodium carboxymethyl cellulose. The morphology of matrices was determined by water absorption and contact angle. The biodegradation was performed in collagenase solution. In vitroflufenamic acid release profiles were built and the kinetic mechanism was set according to different mathematical models. The pharmacological studies followed the effect of collagen formulations treatment on the healing process of Wistar rats which were induced experimental wounds. The studied matrices proved that flufenamic acid delivery can be controlled, and the healing can be completed using the designed spongious matrices.