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Analuiza O, Paredes B, Lascano A, Bonilla S, Martínez-Guitarte JL. Development and Characterization of a Hand Rub Gel Produced with Artisan Alcohol ( Puntas), Silver Nanoparticles, and Saponins from Quinoa. Gels 2024; 10:234. [PMID: 38667653 PMCID: PMC11048961 DOI: 10.3390/gels10040234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 03/19/2024] [Accepted: 03/25/2024] [Indexed: 04/28/2024] Open
Abstract
The emergence of the global pandemic (COVID-19) has directed global attention towards the importance of hygiene as the primary defense against various infections. In this sense, one of the frequent recommendations of the World Health Organization (WHO) is regular hand washing and the use of alcohol-based hand sanitizers. Ethanol is the most widely used alcohol due to its effectiveness in eliminating pathogens, ease of use, and widespread production. However, artisanal alcohol, generally used as a spirit drink, could be a viable alternative for developing sanitizing gels. In this study, the use of alcohol "Puntas", silver nanoparticles, and saponins from quinoa was evaluated to produce hand sanitizer gels. The rheological, physicochemical, and antimicrobial properties were evaluated. In the previous assays, the formulations were adjusted to be similar in visual viscosity to the control gel. A clear decrease in the apparent viscosity was observed with increasing shear rate, and an inversely proportional relationship was observed with the amount of ethyl alcohol used in the formulations. The flow behavior index (n) values reflected a pseudoplastic behavior. Oscillatory dynamic tests were performed to analyze the viscoelastic behavior of gels. A decrease in storage modulus (G') and an increase in loss modulus (G″) as a function of the angular velocity (ω) was observed. The evaluation of pH showed that the gels complied with the requirements to be in contact with the skin of the people, and the textural parameters showed that the control gel was the hardest. The use of artisan alcohol could be an excellent alternative to produce sanitizer gel and contribute to the requirements of the population.
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Affiliation(s)
- Oscar Analuiza
- International School of Doctorate (EIDUNED), National University of Distance Education (UNED), 28040 Madrid, Spain;
- Faculty of Civil and Mechanical Engineering, Technical University of Ambato, Ambato 180104, Ecuador; (B.P.); (A.L.)
| | - Belen Paredes
- Faculty of Civil and Mechanical Engineering, Technical University of Ambato, Ambato 180104, Ecuador; (B.P.); (A.L.)
| | - Alejandra Lascano
- Faculty of Civil and Mechanical Engineering, Technical University of Ambato, Ambato 180104, Ecuador; (B.P.); (A.L.)
| | | | - José-Luis Martínez-Guitarte
- International School of Doctorate (EIDUNED), National University of Distance Education (UNED), 28040 Madrid, Spain;
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Trindade Mazala T, Costa Viana M, Carneiro G, Lee Nelson D, de Freitas-Marques MB, De Martinis BS, Florêncio J, Mazzé FM, da Silva SGD, Barbosa SL. Purification and use of crude green glycerol from the transesterification of triglycerides in the formulation of an alcohol gel hand sanitizer. Sci Rep 2024; 14:5510. [PMID: 38448502 PMCID: PMC10917745 DOI: 10.1038/s41598-023-49422-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 12/07/2023] [Indexed: 03/08/2024] Open
Abstract
The aim of this study was to produce an alcohol gel hand sanitizer containing green glycerol. Crude glycerol was purified using chemical and physical treatments. The sanitizer was prepared using 71.100 g of 99.3° GL ethanol, 28.0 g H2O, 0.5 g of Carboxypolymethylene [Carbopol 940® or Carbomer], 5 drops of triethanolamine (pH 5-7), and glycerol (1.5% w/w). The thermal behavior of the ethanol, carbopol, triethanolamine, glycerol, and alcohol gels were evaluated using Thermogravimetry and Differential Thermal Analysis. The apparent viscosity was obtained using a rotary viscometer. The determination of in vitro spreadability was achieved by an adaptation of the Knorst method. The ethanol content was measured by headspace gas chromatography using a flame ionization detector. The thermal behavior of the gels was influenced by the presence of glycerol, which confirms the possible network interactions formed. The relative densities of the samples were between 0.887 and 0.890 g/cm3. No alteration of the pH of the formulation resulted from the incorporation of glycerol. The apparent viscosities of the alcohol gels were greater than 20,000 cP. No alteration in the in vitro spreadability of the gel alcohol (530.6 mm2) resulted from the addition of glycerol. Hand sanitizer was produced using glycerol from a transesterification reaction. It represents an alternative use for the glycerol being produced in biodiesel processes. The product satisfied the requirements of WHO that preconize a formulation containing 1.45% glycerol as an humectant to protect skin against dryness and dermatitis.
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Affiliation(s)
- Tassio Trindade Mazala
- Department of Pharmacy, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM, Campus JK, Rodovia MGT 367 - Km 583, n° 5.000, Alto da Jacuba, Diamantina, Minas Gerais, 39100-000, Brazil
| | - Mateus Costa Viana
- Department of Pharmacy, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM, Campus JK, Rodovia MGT 367 - Km 583, n° 5.000, Alto da Jacuba, Diamantina, Minas Gerais, 39100-000, Brazil
| | - Guilherme Carneiro
- Department of Pharmacy, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM, Campus JK, Rodovia MGT 367 - Km 583, n° 5.000, Alto da Jacuba, Diamantina, Minas Gerais, 39100-000, Brazil
| | - David Lee Nelson
- Department of Pharmacy, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM, Campus JK, Rodovia MGT 367 - Km 583, n° 5.000, Alto da Jacuba, Diamantina, Minas Gerais, 39100-000, Brazil
| | - Maria B de Freitas-Marques
- Department of Chemistry, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Pampulha, Belo Horizonte, Minas Gerais, 31270-901, Brazil
- Curso de Farmácia. Faculdade de Minas, Faminas-BH, Av. Cristiano Machado, 12001, Vila Clóris, Belo Horizonte, Minas Gerais, 31744-007, Brazil
| | - Bruno Spinosa De Martinis
- Universidade de São Paulo, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Av. Bandeirantes, 3900, Ribeirão Prêto, SP, 14040-900, Brazil
| | - Jacques Florêncio
- Universidade de São Paulo, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Av. Bandeirantes, 3900, Ribeirão Prêto, SP, 14040-900, Brazil
| | - Fernanda Marur Mazzé
- Institute of Chemistry, Federal University of Rio Grande do Norte, Natal, RN, 59078-900, Brazil
| | | | - Sandro L Barbosa
- Department of Pharmacy, Universidade Federal dos Vales do Jequitinhonha e Mucuri-UFVJM, Campus JK, Rodovia MGT 367 - Km 583, n° 5.000, Alto da Jacuba, Diamantina, Minas Gerais, 39100-000, Brazil.
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Kovács A, Falusi F, Gácsi A, Budai-Szűcs M, Csányi E, Veréb Z, Monostori T, Csóka I, Berkó S. Formulation and investigation of hydrogels containing an increased level of diclofenac sodium using risk assessment tools. Eur J Pharm Sci 2024; 193:106666. [PMID: 38081373 DOI: 10.1016/j.ejps.2023.106666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 11/28/2023] [Accepted: 12/04/2023] [Indexed: 01/21/2024]
Abstract
Transdermal delivery of active ingredients is a challenge for pharmaceutical technology due to their inadequate penetration properties and the barrier function of the skin. The necessity of painless, effective, topical therapy for the aging population is growing, and a variety of diclofenac sodium-containing semi-solid preparations are available to alleviate the symptoms of these ailments. Our purpose was to formulate a novel composition with higher drug content to enhance drug release and permeation, thereby providing more effective therapy. Another goal was to maintain the concentration of the organic solvent mixture below 30%, to protect the skin barrier. Firstly, literature and market research were conducted, based on which the appropriate excipients for the target formulation were selected. Solubility tests were conducted with binary and ternary mixtures. As a result, the optimal ternary mixture was chosen. Hydrogels containing 1, 5, and 7% of diclofenac sodium were prepared and the stability of the formulations were studied by microscopic measurements and cytotoxicity test were carried out of the components also. The release and permeation of diclofenac sodium were investigated in different concentrations. It can be concluded that we have succeeded in preparing a topically applicable stable diclofenac sodium hydrogel with higher concentration, drug release, and improved skin permeation than the formulations available on the market.
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Affiliation(s)
- Anita Kovács
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary
| | - Fanni Falusi
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary
| | - Attila Gácsi
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary
| | - Mária Budai-Szűcs
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary
| | - Erzsébet Csányi
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary
| | - Zoltán Veréb
- Department of Dermatology and Allergology, Regenerative Medicine and Cellular Pharmacology Laboratory, University of Szeged, Szeged 6720, Hungary; Centre of Excellence for Interdisciplinary Research, Development and Innovation, University of Szeged, Szeged 6720, Hungary; Hungarian Centre of Excellence for Molecular Medicine-USz Skin Research Group, University of Szeged, Szeged 6720, Hungary
| | - Tamás Monostori
- Department of Dermatology and Allergology, Regenerative Medicine and Cellular Pharmacology Laboratory, University of Szeged, Szeged 6720, Hungary; Centre of Excellence for Interdisciplinary Research, Development and Innovation, University of Szeged, Szeged 6720, Hungary
| | - Ildikó Csóka
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary
| | - Szilvia Berkó
- Faculty of Pharmacy, Institute of Pharmaceutical Technology and Regulatory Affairs, University of Szeged, 6 Eötvös St., Szeged H-6720, Hungary.
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Mishra T, Vuppu S. Toxicity of chemical-based hand sanitizers on children and the development of natural alternatives: a computational approach. Crit Rev Toxicol 2023; 53:572-599. [PMID: 37916473 DOI: 10.1080/10408444.2023.2270496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 10/03/2023] [Indexed: 11/03/2023]
Abstract
The unintended exposure of children to hand sanitizers poses a high risk of potentially fatal complications. Skin irritation, dryness, cracking, peeling, hypoglycemia, apnea, and acidosis are examples of unintended consequences of hand sanitizer. The sanitizer reportedly kills normal microbial flora on hands, which usually promotes innate immunity among children under 12. Children are more susceptible to the toxicity associated with the chemical constituents of marketed chemical-based hand sanitizers; however, the studies to develop sanitizer formulations for children are rudimentary. The adverse events limit the use of hand sanitizers specifically in children because of their sensitive and delicate skin. Additionally, it is reported that many chemical-based hand sanitizer formulations, especially alcohol-based ones may also contain contaminants like methanol, acetaldehyde, benzene, isopropanol, and ethyl-acetate. These contaminants are found to be hazardous to human health exhibiting toxicity on ingestion, inhalation, or dermal exposure, especially in children. Therefore, it is important to design novel, innovative, safer sanitizer formulations for children. The study aims to discuss the toxic contaminants in chemical-based sanitizer formulations and propose a design for novel herbal formulations with minimal toxicity and adverse effects, especially for children. The review focuses on ADMET analysis of the common contaminants in hand sanitizers, molecular docking, Lipinski's rule of five analysis, and molecular simulation studies to analyze the efficacy of interaction with the receptor leading to anti-microbial activity and drug-likeness of the compound. The in silico methods can effectively validate the potential efficacy of novel formulations of hand sanitizers designed for children as an efficient alternative to chemical-based sanitizers with greater efficacy and the absence of toxic contaminants.
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Affiliation(s)
- Toshika Mishra
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, India
| | - Suneetha Vuppu
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, India
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Jin S, Newton MAA, Cheng H, Zhang Q, Gao W, Zheng Y, Lu Z, Dai Z, Zhu J. Progress of Hydrogel Dressings with Wound Monitoring and Treatment Functions. Gels 2023; 9:694. [PMID: 37754375 PMCID: PMC10528853 DOI: 10.3390/gels9090694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/09/2023] [Accepted: 08/21/2023] [Indexed: 09/28/2023] Open
Abstract
Hydrogels are widely used in wound dressings due to their moisturizing properties and biocompatibility. However, traditional hydrogel dressings cannot monitor wounds and provide accurate treatment. Recent advancements focus on hydrogel dressings with integrated monitoring and treatment functions, using sensors or intelligent materials to detect changes in the wound microenvironment. These dressings enable responsive treatment to promote wound healing. They can carry out responsive dynamic treatment in time to effectively promote wound healing. However, there is still a lack of comprehensive reviews of hydrogel wound dressings that incorporate both wound micro-environment monitoring and treatment functions. Therefore, this review categorizes hydrogel dressings according to wound types and examines their current status, progress, challenges, and future trends. It discusses various wound types, including infected wounds, burns, and diabetic and pressure ulcers, and explores the wound healing process. The review presents hydrogel dressings that monitor wound conditions and provide tailored treatment, such as pH-sensitive, temperature-sensitive, glucose-sensitive, pressure-sensitive, and nano-composite hydrogel dressings. Challenges include developing dressings that meet the standards of excellent biocompatibility, improving monitoring accuracy and sensitivity, and overcoming obstacles to production and commercialization. Furthermore, it provides the current status, progress, challenges, and future trends in this field, aiming to give a clear view of its past, present, and future.
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Affiliation(s)
- Shanshan Jin
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Md All Amin Newton
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Hongju Cheng
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Qinchen Zhang
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Weihong Gao
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Yuansheng Zheng
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Zan Lu
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
| | - Zijian Dai
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 200051, China
| | - Jie Zhu
- School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China; (S.J.); (M.A.A.N.); (H.C.); (Q.Z.); (W.G.); (Y.Z.); (Z.L.)
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Tang H, Wang H, Hamblin MR, Jiang L, Zhou Y, Xu Y, Wen X. Contact dermatitis caused by prevention measures during the COVID-19 pandemic: a narrative review. Front Public Health 2023; 11:1189190. [PMID: 37546301 PMCID: PMC10400336 DOI: 10.3389/fpubh.2023.1189190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2023] [Accepted: 07/04/2023] [Indexed: 08/08/2023] Open
Abstract
Introduction During the outbreak of Coronavirus disease 2019 (COVID-19), health care workers wore personal protective equipment including masks, gloves and goggles for a long time. In order to reduce the transmission routes of the virus, public places were sprayed with disinfectant. Moreover, the body, hands and clothing were frequently disinfected and washed for hygiene purposes. Studies have shown that these practices could easily irritate the skin and damage the skin barrier. Long-term irritation or exposure to allergens may lead to the occurrence of contact dermatitis (CD). Methods Subject headings were searched via the National Library of Medicine (PubMed) and web of science databases: COVID-19; contact dermatitis; adverse skin reaction; PPE; dermatitis; mask; glory; hand hygiene, disinfection; face shield; goggle; protect cloth. A total of 246 and 646 articles were retrieved from the two databases, respectively. 402 articles remained after removing duplicates. Reviews, non-English articles, articles that could not be accessed to read or did not conform to our topic were excluded. Finally, a total of 32 cross-sectional studies, 9 case reports and 2 randomized controlled trials were included. Discussion This article reviews reports of CD caused by various prevention and hygiene measures during the COVID-19 pandemic. The amount of skin damage caused by COVID-19 prevention measures could be decreased by improved education about skin management.
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Affiliation(s)
- Huimiao Tang
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Hao Wang
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Michael R. Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, South Africa
| | - Lu Jiang
- Outpatient Department of West China Hospital, Sichuan University, Chengdu, China
| | - Yanjun Zhou
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Yidan Xu
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
| | - Xiang Wen
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
- Laboratory of Dermatology, Clinical Institute of Inflammation and Immunology, Frontiers Science Center for Disease-related Molecular Network, West China Hospital, Sichuan University, Chengdu, China
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Egner P, Pavlačková J, Sedlaříková J, Pleva P, Mokrejš P, Janalíková M. Non-Alcohol Hand Sanitiser Gels with Mandelic Acid and Essential Oils. Int J Mol Sci 2023; 24:ijms24043855. [PMID: 36835267 PMCID: PMC9961504 DOI: 10.3390/ijms24043855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/01/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Antimicrobial hand gels have become extremely popular in recent years due to the COVID-19 pandemic. Frequent use of hand sanitising gel can lead to dryness and irritation of the skin. This work focuses on the preparation of antimicrobial acrylic acid (Carbomer)-based gels enhanced by non-traditional compounds-mandelic acid and essential oils-as a substitute for irritating ethanol. Physicochemical properties (pH and viscosity), stability and sensory attributes of the prepared gels were investigated. Antimicrobial activity against representative Gram-positive and Gram-negative bacteria and yeasts was determined. The prepared gels with mandelic acid and essential oil (cinnamon, clove, lemon, and thyme) proved to have antimicrobial activity and even better organoleptic properties than commercial ethanol-based antimicrobial gel. Further, results confirmed that the addition of mandelic acid had a desirable effect on gel properties (antimicrobial, consistency, stability). It has been shown that the essential oil/mandelic acid combination can be a dermatologically beneficial hand sanitiser compared to commercial products. Thus, the produced gels can be used as a natural alternative to alcohol-based daily hand hygiene sanitisers.
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Affiliation(s)
- Pavlína Egner
- Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
- Correspondence: (P.E.); (M.J.)
| | - Jana Pavlačková
- Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - Jana Sedlaříková
- Department of Fat, Surfactant and Cosmetics Technology, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - Pavel Pleva
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - Pavel Mokrejš
- Department of Polymer Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
| | - Magda Janalíková
- Department of Environmental Protection Engineering, Faculty of Technology, Tomas Bata University in Zlín, Vavrečkova 275, 760 01 Zlín, Czech Republic
- Correspondence: (P.E.); (M.J.)
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Antimicrobial Efficacy Assessment and Rheological Investigation of Two Different Hand Sanitizers Compared with the Standard Reference WHO Formulation 1. Gels 2023; 9:gels9020108. [PMID: 36826278 PMCID: PMC9957052 DOI: 10.3390/gels9020108] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/19/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
(1) Background: recently, the use of alcohol-based hand sanitizers (ABHSs) has become very frequent, and an evaluation of the stability and effectiveness of their formulations is a critical topic which should be carefully considered. (2) Methods: starting from the characterization of the hand sanitizers object of the study, our interest was focused on their rheological behavior in order to confirm their intrinsic features, but also the stability of each formulation in different conditions of shear and temperature; the second aspect concerns the antimicrobial assessment through a panel of in vitro and in vivo experimental trials. (3) Results: rheological investigation confirmed good stability for the two hand sanitizers in gel formula with respect to the reference in liquid formula; the antimicrobial activity evaluation showed good efficacy of each formulation both in vitro and in vivo. (4) Conclusions: altogether, our overview presents a valid quality control assessment to ensure the stability and efficacy of an alcohol-based hand sanitizer.
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A Self-Forming Hydrogel from a Bactericidal Copolymer: Synthesis, Characterization, Biological Evaluations and Perspective Applications. Int J Mol Sci 2022; 23:ijms232315092. [PMID: 36499417 PMCID: PMC9741259 DOI: 10.3390/ijms232315092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/03/2022] Open
Abstract
Objects touched by patients and healthcare workers in hospitals may harbor pathogens, including multi-drug resistant (MDR) staphylococci, enterococci (VRE), Escherichia coli, Acinetobacter, and Pseudomonas species. Medical devices contaminated by these pathogens may also act as a source of severe and difficult-to-treat human infections, thus becoming a critical public health concern requiring urgent resolutions. To this end, we recently reported the bactericidal effects of a cationic copolymer (CP1). Here, aiming at developing a bactericidal formulation possibly to be used either for surfaces disinfection or to treat skin infections, CP1 was formulated as a hydrogel (CP1_1.1-Hgel). Importantly, even if not cross-linked, CP1 formed the gel upon simple dispersion in water, without requiring gelling agents or other additives which could be skin-incompatible or interfere with CP1 bactericidal effects in possible future topical applications. CP1_1.1-Hgel was characterized by attenuated-total-reflectance Fourier transform infrared (ATR-FTIR) and UV-Vis spectroscopy, as well as optic and scanning electron microscopy (OM and SEM) to investigate its chemical structure and morphology. Its stability was assessed by monitoring its inversion properties over time at room temperature, while its mechanical characteristics were assessed by rheological experiments. Dose-dependent cytotoxicity studies performed on human fibroblasts for 24 h with gel samples obtained by diluting CP_1.1-Hgel at properly selected concentrations established that the 3D network formation did not significantly affect the cytotoxic profile of CP1. Also, microbiologic investigations carried out on two-fold serial dilutions of CP1-gel confirmed the minimum inhibitory concentrations (MICs) previously reported for the not formulated CP1.Selectivity indices values up to 12 were estimated by the values of LD50 and MICs determined here on gel samples.
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Mutual Jellification of Two Bactericidal Cationic Polymers: Synthesis and Physicochemical Characterization of a New Two-Component Hydrogel. Pharmaceutics 2022; 14:pharmaceutics14112444. [PMID: 36432635 PMCID: PMC9692830 DOI: 10.3390/pharmaceutics14112444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/29/2022] [Accepted: 11/08/2022] [Indexed: 11/16/2022] Open
Abstract
Here, a new two-component hydrogel (CP1OP2-Hgel) was developed, simply by dispersing in water two cationic bactericidal polymers (CP1 and OP2) effective against several multidrug-resistant (MDR) clinical isolates of the most relevant Gram-positive and Gram-negative species. Interestingly, while OP2 acts only as an antibacterial ingredient when in gel, CP1 works as both an antibacterial and a gelling agent. To verify whether it would be worthwhile to use CP1 and OP2 as bioactive ingredients of a new hydrogel supposed for a future treatment of skin infections, dose-dependent cytotoxicity studies with CP1 and OP2 were performed on human fibroblasts for 24 h, before preparing the formulation. Although a significant cytotoxicity at concentrations > 2 µM was evidenced for both polymers, selectivity indices (SIs) over 12 (CP1) and up to six (OP2) were determined, due to the powerful antibacterial properties of the two polymers, thus supporting the rationale for their formulation as a hydrogel. The chemical structure and morphology of CP1OP2-Hgel were investigated by PCA-assisted attenuated total reflectance (ATR) Fourier-transform infrared (FTIR) analysis and scanning electron microscopy (SEM), while its rheological properties were assessed by determining its dynamic viscosity. The cumulative weight loss and swelling percentage curves, the porosity, and the maximum swelling capability of CP1OP2-Hgel were also determined and reported. Overall, due to the potent bactericidal effects of CP1 and OP2 and their favorable selectivity indices against several MDR pathogens, good rheological properties, high porosity, and strong swelling capability, CP1OP2-Hgel may, in the future, become a new weapon for treating severe nosocomial skin infections or infected chronic wounds. Further investigations in this sense are currently being carried out.
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Hamad Vuai SA, Sahini MG, Sule KS, Ripanda AS, Mwanga HM. A Comparative In-vitro Study on Antimicrobial Efficacy of On-Market Alcohol-Based Hand washing Sanitizers towards Combating Microbes and its Application in Combating Covid-19 Global Outbreak. Heliyon 2022; 8:e11689. [PMCID: PMC9670678 DOI: 10.1016/j.heliyon.2022.e11689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/22/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
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Kucharski Ł, Cybulska K, Kucharska E, Nowak A, Pełech R, Klimowicz A. Biologically Active Preparations from the Leaves of Wild Plant Species of the Genus Rubus. Molecules 2022; 27:molecules27175486. [PMID: 36080251 PMCID: PMC9457741 DOI: 10.3390/molecules27175486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/11/2022] [Accepted: 08/23/2022] [Indexed: 11/16/2022] Open
Abstract
The plants of the genus Rubus (R.) are applied as antiseptic agents in the treatment of skin diseases. Despite the great interest in plants of this genus, there are few reports on the antioxidant and biological activities of preparations obtained from the leaves of these plants. Therefore, we decided to evaluate the antioxidant activity of preparations from leaves of wild plant species of the genus Rubus using the frequently applied DPPH, ABTS, and FRAP methods, as well as to determine the total polyphenol content using the Folin−Ciocalteau method and perform qualitative evaluation by gas chromatography−mass spectrometry (GC-MS). The bactericidal and fungicidal activities of the obtained preparations were evaluated by applying laboratory tests: using the disc and the well methods based on the standards EN 13697:2019, EN 13697:2015, and EN 1500:2013. Microbiological tests of the plant preparations against bacteria, fungi, and yeasts isolated from the environment and against reference strains were performed. Moreover, antimicrobial testing of antibiotics against the tested strains was performed for comparison. The n-octanol/water partition coefficient of the obtained preparations was determined by the shake-flask method to determine their lipophilicity. According to the results, a high content of polyphenols and other antioxidant and biologically active compounds can be thought of as the parameter responsible for the effective activity of plant preparations obtained from wild plant species of the genus Rubus. The methods for determining bactericidal and fungicidal activity clearly demonstrates that preparations with reduced ethanol content exhibit bactericidal and fungicidal activity on surfaces. Testing of hand disinfection by means of rubbing with the preparations confirmed their antimicrobial activity against Escherichia coli K12 NCTC 10538. The obtained results show that the tested preparations exhibit on average two times lower activity against the reference bacterial strains than comparable antibiotics. The preparations obtained from the leaves of R. idaeus L. and R. fruticosus L. could complement classical antibiotics. While environmental bacteria showed a similar response to the preparations and antibiotics, their sensitivity was about one-third less than that of the reference strains. Our studies have shown that the obtained preparations are highly hydrophilic (logP < 0). Thus, these preparations can only be used in lipid bilayers in the aqueous core of liposomes, not in the lipid envelope.
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Affiliation(s)
- Łukasz Kucharski
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, PL-70111 Szczecin, Poland
- Correspondence: (Ł.K.); (E.K.); Tel.: +48-660-476-340 (Ł.K.); +48-888-615-273 (E.K.)
| | - Krystyna Cybulska
- Department of Microbiology and Environmental Chemistry, Faculty of Environmental Management and Agriculture, West Pomeranian University of Technology, PL-71434 Szczecin, Poland
| | - Edyta Kucharska
- Faculty of Chemical Technology and Engineering, Department of Chemical Organic Technology and Polymeric Materials, West Pomeranian University of Technology, PL-70322 Szczecin, Poland
- Correspondence: (Ł.K.); (E.K.); Tel.: +48-660-476-340 (Ł.K.); +48-888-615-273 (E.K.)
| | - Anna Nowak
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, PL-70111 Szczecin, Poland
| | - Robert Pełech
- Faculty of Chemical Technology and Engineering, Department of Chemical Organic Technology and Polymeric Materials, West Pomeranian University of Technology, PL-70322 Szczecin, Poland
| | - Adam Klimowicz
- Department of Cosmetic and Pharmaceutical Chemistry, Pomeranian Medical University in Szczecin, PL-70111 Szczecin, Poland
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Silva AF, Wood TA, Hodgson DJM, Royer JR, Thijssen JHJ, Lips A, Poon WCK. Rheological design of thickened alcohol-based hand rubs. RHEOLOGICA ACTA 2022; 61:571-581. [PMID: 35811745 PMCID: PMC9255512 DOI: 10.1007/s00397-022-01347-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 04/21/2022] [Accepted: 04/21/2022] [Indexed: 06/15/2023]
Abstract
The handleability and sensory perception of hand sanitisers by consumers affect the hygiene outcome. Spillage may result in under-dosing and poor sensory properties can lead to under-utilisation. We first propose four principles (low runoff, spreadability, smoothness and non-stickiness) for designing the rheology of thickened alcohol-based hand rubs with acceptable handleability and hand feel. We then evaluate a commercial hand gel and a variety of simplified formulations thickened with microgels (Carbopol 974P, Carbopol Ultrez 20 and Sepimax Zen), or linear polymers (Jaguar HP 120 COS), and evaluate them against these design criteria. All four additives provide acceptable spreadability by shear thinning to η ≈ 10 - 1 Pa s at γ ˙ ∼ 10 3 s - 1 . Either the finite yield stress conferred by the microgels ( σ y ≳ 10 Pa ) or the increase in low-shear viscosity provided by the linear polymer ( η ≳ 1 Pa s at γ ˙ ≲ 0.1 s - 1 ) give rise to acceptably low runoff. However, the formulation using the linear polymer shows a filament breakage time of τ b ≈ 1 s in capillary rheology, which may result in stickiness and therefore a less than optimal hand feel.
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Affiliation(s)
- Andreia F Silva
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
| | - Tiffany A Wood
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
| | - Daniel J M Hodgson
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
| | - John R Royer
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
| | - Job H J Thijssen
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
| | - Alex Lips
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
| | - Wilson C K Poon
- Edinburgh Complex Fluids Partnership (ECFP), SUPA and School of Physics & Astronomy, The University of Edinburgh, Peter Guthrie Tait Road, Edinburgh, EH9 3FD UK
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Pérez de la Lastra JM, Anand U, González-Acosta S, López MR, Dey A, Bontempi E, Morales delaNuez A. Antimicrobial Resistance in the COVID-19 Landscape: Is There an Opportunity for Anti-Infective Antibodies and Antimicrobial Peptides? Front Immunol 2022; 13:921483. [PMID: 35720330 PMCID: PMC9205220 DOI: 10.3389/fimmu.2022.921483] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/06/2022] [Indexed: 12/15/2022] Open
Abstract
Although COVID-19 has captured most of the public health attention, antimicrobial resistance (AMR) has not disappeared. To prevent the escape of resistant microorganisms in animals or environmental reservoirs a "one health approach" is desirable. In this context of COVID-19, AMR has probably been affected by the inappropriate or over-use of antibiotics. The increased use of antimicrobials and biocides for disinfection may have enhanced the prevalence of AMR. Antibiotics have been used empirically in patients with COVID-19 to avoid or prevent bacterial coinfection or superinfections. On the other hand, the measures to prevent the transmission of COVID-19 could have reduced the risk of the emergence of multidrug-resistant microorganisms. Since we do not currently have a sterilizing vaccine against SARS-CoV-2, the virus may still multiply in the organism and new mutations may occur. As a consequence, there is a risk of the appearance of new variants. Nature-derived anti-infective agents, such as antibodies and antimicrobial peptides (AMPs), are very promising in the fight against infectious diseases, because they are less likely to develop resistance, even though further investigation is still required.
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Affiliation(s)
- José M. Pérez de la Lastra
- Biotechnology of Macromolecules, Instituto de Productos Naturales y Agrobiología, IPNA (CSIC), San Cristóbal de la Laguna, Spain
| | - Uttpal Anand
- Department of Life Sciences, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Sergio González-Acosta
- Biotechnology of Macromolecules, Instituto de Productos Naturales y Agrobiología, IPNA (CSIC), San Cristóbal de la Laguna, Spain
| | - Manuel R. López
- Biotechnology of Macromolecules, Instituto de Productos Naturales y Agrobiología, IPNA (CSIC), San Cristóbal de la Laguna, Spain
| | - Abhijit Dey
- Department of Life Sciences, Presidency University, Kolkata, India
| | - Elza Bontempi
- National Interuniversity Consortium of Materials Science and Technology (INSTM) and Chemistry for Technologies Laboratory, Department of Mechanical and Industrial Engineering, University of Brescia, Brescia, Italy
| | - Antonio Morales delaNuez
- Biotechnology of Macromolecules, Instituto de Productos Naturales y Agrobiología, IPNA (CSIC), San Cristóbal de la Laguna, Spain
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Vergara D, Loza-Rodríguez N, Acevedo F, Bustamante M, López O. Povidone-iodine loaded bigels: Characterization and effect as a hand antiseptic agent. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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