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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 The effect of lavandula essential oils on release of niflumic acid from collagen hydrolysates(Korean Institute Chemical Engineers, 2016) Ghica, Mihaela Violeta; Albu, Madalina Georgiana; Kaya, Durmus Alpaslan; Popa, Lacramioara; Ozturk, Sevket; Rusu, Laura-Cristina; Dinu-Pirvu, CristinaThe aim of this paper is to design and characterize some drug delivery systems (DDS) based on collagen hydrolysates (H), niflumic acid as a non-steroidal anti-inflammatory model drug and two essential oils of Lavandula officinalis L. (LO) and Lavandula stoechas L. subsp. Stoechas (LS), for use in healing cutaneous wounds with post-lesion inflammatory response. The essential oils are characterized by GC-MS. The wettability capacity of collagen hydrolysate powders was assessed by contact angle measurement. Niflumic acid release was investigated using a modified Franz diffusion cell, and the diffusion coefficient, time-lag and drug flux were determined. The kinetic parameters were found to be influenced by different concentrations and types of essential oils. These therapeutical products, based on collagen hydrolysates and synergistic drug associations, could have potential biomedical application in wound healing treatment.Öğe Formulation and Characterization of Niacinamide and Collagen Emulsion and Its Investigation as a Potential Cosmeceutical Product(Mdpi, 2024) Danila, Elena; Kaya, Durmus Alpaslan; Anuta, Valentina; Popa, Lacramioara; Coman, Alina Elena; Chelaru, Ciprian; Constantinescu, Rodica RoxanaCosmeceuticals are one of the fast-growing areas of the natural personal care industry. Cosmeceuticals are cosmetic products with medicinal or drug-like benefits that can affect the biological functioning of the skin depending on the ingredients in the composition. The development of one formulation acting on the dermis and stimulating the collagen production is very important for the hydration of the skin. The association of collagen with other ingredients can have a positive effect on increasing the natural production of collagen in the skin. An example of such an ingredient is niacinamide, which, having a recognized nutritional value, has been quite recently studied. Considering these aspects, this study focused on developing oil-in-water (O/W) emulsions, based on natural ingredients (vegetable oils, floral waters, and essential oils) and hydrolyzed collagen and niacinamide as active ingredients, and on evaluating the stability, pH, optical, superficial, rheological and textural properties, as well as microbiological tests of the emulsions, in order to investigate their potential as a cosmeceutical product. All the obtained emulsions proved to be stable at variable temperatures and had a pH value compatible with natural pH of the skin, allowing their safe application. Over goniometric analysis, a partial wetting and a hydrophilic character of the emulsions were emphasized. Following the rheological analyses, all dermatocosmetic emulsions exhibited non-Newtonian pseudoplastic behavior and a thixotropic character, these properties being very important for their production process and their application on the skin surface to generate an optimal therapeutic effect. The textural characteristics recorded for all emulsions indicated adequate spreadability at the application site. All tested samples respected the Pharmacopoeia limits of microbiological contamination. All prepared emulsions have good stability, are safe for the skin and have appropriate physicochemical and microbiological characteristics; therefore, they can be used as a cosmeceutical product.Öğe PROTECTIVE EFFECT OF LYCOPENE ON OXIDATIVE STRESS INDUCED BY DIFFERENT DOSES OF 2,3,7,8-TETRACHLORODIBENZO-p-DIOXIN IN BRAIN, LIVER, KIDNEY, AND HEART TISSUE OF RATS(Soc Stiinte Farmaceutice Romania, 2011) Sakin, Fatih; Bulmus, Funda Gulcu; Servi, Kadir; Popa, LacramioaraThe aim of this study was to investigate the possible protective role of lycopene (LYC) on liver, kidney, heart, and brain in male rats exposed to different doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Forty-eight rats were divided into six groups. The first group received 0.5 mL corn oil as control; the second group was treated with 10 mg/kg bw/day LYC. Groups 3 and 4 were treated to 50 and 500 ng/kg bw/day of TCDD, respectively. Groups 5 and 6 were subjected to 50 and 500 ng/kg bw/day of TCDD along with 10 mg/kg bw/day of LYC, simultaneously. The duration of the experiment was 13 weeks. While the exposure to TCDD increased the levels of malondialdehyde (MDA), it decreased glutathione (GSH) levels, and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) activities. However, LYC-treatment decreased the high MDA levels and increased GSH, SOD, GSH-Px, and CAT activities. In conclusion, LYC treatment decreased TCDD-induced lipid peroxidation and supported the antioxidant activity. It is suggested that LYC has a protective effect against oxidative stress induced by TCDD.Öğe Protective effect of lycopene on oxidative stress induced by different doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin in brain, liver, kidney, and heart tissue of rats(2011) Sakin, Fatih; Bulmuş, Funda Gülcü; Servi, Kadir; Popa, LacramioaraThe aim of this study was to investigate the possible protective role of lycopene (LYC) on liver, kidney, heart, and brain in male rats exposed to different doses of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). Forty-eight rats were divided into six groups. The first group received 0.5 mL corn oil as control; the second group was treated with 10 mg/kg bw/day LYC. Groups 3 and 4 were treated to 50 and 500 ng/kg bw/day of TCDD, respectively. Groups 5 and 6 were subjected to 50 and 500 ng/kg bw/day of TCDD along with 10 mg/kg bw/day of LYC, simultaneously. The duration of the experiment was 13 weeks. While the exposure to TCDD increased the levels of malondialdehyde (MDA), it decreased glutathione (GSH) levels, and superoxide dismutase (SOD), glutathione peroxidase (GSH-Px) and catalase (CAT) activities. However, LYC-treatment decreased the high MDA levels and increased GSH, SOD, GSH-Px, and CAT activities. In conclusion, LYC treatment decreased TCDD-induced lipid peroxidation and supported the antioxidant activity. It is suggested that LYC has a protective effect against oxidative stress induced by TCDD.Öğe Rheological Properties and Stability of Dermatocosmetic Emulsions with Collagen and Natural Ingredients Used as Color Correcting Cream and Cream Foundation(Revista Chimie Srl, 2019) Danila, Elena; Kaya, Durmus Alpaslan; Ghica, Mihaela Violeta; Kaya, Madalina Georgiana Albu; Negrea, Cristina; Popa, Lacramioara; Nitipir, CorneliaThe aim of this study was to formulate and evaluate two types of 0/W emulsions based on collagen and other natural ingredients that can be used as color correcting (CC-cream) and cream foundation. Both types of emulsions obtained are stable at different temperatures and the pH values of emulsions correspond to the natural pH of the skin, indicating that emulsions can be safely applied to the skin. Results from the optical microscopy analysis show that all emulsions present foam-like appearance. The rheological properties of emulsions were studied and it was proved that all emulsions present a non-Newtonian pseudoplastic behaviour and thixotropic characteristics at two operating temperatures (24 and 33 degrees C). It can be concluded that all emulsions can be used as a natural alternative to a CC-cream or a cream foundation. Further microbiological tests and clinical trials are necessary for the obtained emulsions.Öğe Rheological properties and stability of dermatocosmetic emulsions with collagen and natural ingredients used as color correcting cream and cream foundation(Syscom 18 SRL, 2019) Danila, Elena; Kaya, Durmus Alpaslan; Ghica, Mihaela Violeta; Kaya, Madalina Georgiana Albu; Negrea, Cristina; Popa, Lacramioara; Nitipir, CorneliaThe aim of this study was to formulate and evaluate two types of O/W emulsions based on collagen and other natural ingredients that can be used as color correcting (CC-cream) and cream foundation. Both types of emulsions obtained are stable at different temperatures and the pH values of emulsions correspond to the natural pH of the skin, indicating that emulsions can be safely applied to the skin. Results from the optical microscopy analysis show that all emulsions present foam-like appearance. The rheological properties of emulsions were studied and it was proved that all emulsions present a non-Newtonian pseudoplastic behaviour and thixotropic characteristics at two operating temperatures (24 and 33°C). It can be concluded that all emulsions can be used as a natural alternative to a CC-cream or a cream foundation. Further microbiological tests and clinical trials are necessary for the obtained emulsions. © 2019 SYSCOM 18 S.R.L.. All rights reserved.
