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Degovics D, Hartmann P, Németh IB, Árva-Nagy N, Kaszonyi E, Szél E, Strifler G, Bende B, Krenács L, Kemény L, Erős G. A novel target for the promotion of dermal wound healing: Ryanodine receptors. Toxicol Appl Pharmacol 2019; 366:17-24. [PMID: 30684528 DOI: 10.1016/j.taap.2019.01.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 01/11/2019] [Accepted: 01/23/2019] [Indexed: 10/27/2022]
Abstract
Ryanodine receptors have an important role in the regulation of intracellular calcium levels in the nervous system and muscle. It has been described that ryanodine receptors influence keratinocyte differentiation and barrier homeostasis. Our goal was to examine the role of ryanodine receptors in the healing of full-thickness dermal wounds by means of in vitro and in vivo methods. The effect of ryanodine receptors on wound healing, microcirculation and inflammation was assessed in an in vivo mouse wound healing model, using skin fold chambers in the dorsal region, and in HaCaT cell scratch wound assay in vitro. SKH-1 mice were subjected to sterile saline (n = 36) or ryanodine receptor agonist 4-chloro-m-cresol (0.5 mM) (n = 42) or ryanodine receptor antagonist dantrolene (100 μM) (n = 42). Application of ryanodine receptor agonist 4-chloro-m-cresol did not influence the studied parameters significantly, whereas ryanodine receptor antagonist dantrolene accelerated the wound closure. Inhibition of the calcium channel also increased the vessel diameters in the wound edges during the process of healing and increased the blood flow in the capillaries at all times of measurement. Furthermore, application of dantrolene decreased xanthine-oxidoreductase activity during the inflammatory phase of wound healing. Inhibition of ryanodine receptor-mediated effects positively influence wound healing. Thus, dantrolene may be of therapeutic potential in the treatment of wounds.
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Affiliation(s)
- Döníz Degovics
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.
| | - Petra Hartmann
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - István Balázs Németh
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Noémi Árva-Nagy
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Enikő Kaszonyi
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Edit Szél
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Gerda Strifler
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Balázs Bende
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - László Krenács
- Laboratory of Tumour Pathology and Molecular Diagnostics, Szeged, Hungary
| | - Lajos Kemény
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, Szeged, Hungary
| | - Gábor Erős
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
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Szél E, Polyánka H, Szabó K, Hartmann P, Degovics D, Balázs B, Németh IB, Korponyai C, Csányi E, Kaszaki J, Dikstein S, Nagy K, Kemény L, Erős G. Anti-irritant and anti-inflammatory effects of glycerol and xylitol in sodium lauryl sulphate-induced acute irritation. J Eur Acad Dermatol Venereol 2015; 29:2333-41. [PMID: 26370610 DOI: 10.1111/jdv.13225] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 05/21/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND Glycerol is known to possess anti-irritant and hydrating properties and previous studies suggested that xylitol may also have similar effects. OBJECTIVE Our aim was to study whether different concentrations of these polyols restore skin barrier function and soothe inflammation in sodium lauryl sulphate (SLS)-induced acute irritation. METHODS The experiments were performed on male SKH-1 hairless mice. The skin of the dorsal region was exposed to SLS (5%) for 3 h alone or together with 5% or 10% of glycerol respectively. Further two groups received xylitol solutions (8.26% and 16.52% respectively) using the same osmolarities, which were equivalent to those of the glycerol treatments. The control group was treated with purified water. Transepidermal water loss (TEWL) and skin hydration were determined. Microcirculatory parameters of inflammation were observed by means of intravital videomicroscopy (IVM). Furthermore, accumulation of neutrophil granulocytes and lymphocytes, the expression of inflammatory cytokines and SLS penetration were assessed, as well. RESULTS Treatment with the 10% of glycerol and both concentrations of xylitol inhibited the SLS-induced elevation of TEWL and moderated the irritant-induced increase in dermal blood flow and in the number of leucocyte-endothelial interactions. All concentrations of the applied polyols improved hydration and prevented the accumulation of lymphocytes near the treatment site. At the mRNA level, neither glycerol nor xylitol influenced the expression of interleukin-1 alpha. However, expression of interleukin-1 beta was significantly decreased by the 10% glycerol treatment, while expression of tumour necrosis factor-alpha decreased upon the same treatment, as well as in response to xylitol. Higher polyol treatments decreased the SLS penetration to the deeper layers of the stratum corneum. CONCLUSION Both of the analysed polyols exert considerable anti-irritant and anti-inflammatory properties, but the effective concentration of xylitol is lower than that of glycerol.
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Affiliation(s)
- E Szél
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - H Polyánka
- Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary
| | - K Szabó
- Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary
| | - P Hartmann
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - D Degovics
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - B Balázs
- Department of Pharmaceutical Technology, University of Szeged, Szeged, Hungary
| | - I B Németh
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - C Korponyai
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - E Csányi
- Department of Pharmaceutical Technology, University of Szeged, Szeged, Hungary
| | - J Kaszaki
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - S Dikstein
- Unit of Cell Pharmacology, Hebrew University, Jerusalem, Israel
| | - K Nagy
- Department of Oral Surgery, University of Szeged, Szeged, Hungary
| | - L Kemény
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged, Szeged, Hungary
| | - G Erős
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary.,Department of Oral Biology and Experimental Dental Research, University of Szeged, Szeged, Hungary
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Aloisio C, Longhi MR, De Oliveira AG. Development and Characterization of a Biocompatible Soybean Oil-Based Microemulsion for the Delivery of Poorly Water-Soluble Drugs. J Pharm Sci 2015; 104:3535-43. [PMID: 26149419 DOI: 10.1002/jps.24555] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 05/19/2015] [Accepted: 06/04/2015] [Indexed: 11/11/2022]
Abstract
The aim of this work was the development and characterization of a biocompatible microemulsion (ME) containing soybean oil (O), phosphatidylcholine/sodium oleate/Eumulgin®HRE40 as the surfactant mixture (S) and water or buffer solution as the aqueous phase (W), for oral delivery of the poorly water-soluble drugs sulfamerazine (SMR) and indomethacin (INM). A wide range of combinations to obtain clear oil-in-water (o/w) ME was observed from pseudo-ternary phase diagrams, which was greater after the incorporation of both drugs, suggesting that they acted as stabilizers. Drug partition studies indicated a lower affinity of the drugs for the oil domain when they were ionized and with increased temperature, explained by the fact that both drugs were introduced inside the oil domain, determined by nuclear magnetic resonance. High concentrations of SMR and INM were able to be incorporated (22.0 and 62.3 mg/mL, respectively). The ME obtained presented an average droplet size of 100 nm and a negative surface charge. A significant increase in the release of SMR was observed with the ME with the highest percentage of O, because of the solubilizing properties of the ME. Also, a small retention effect was observed for INM, which may be explained by the differences in the partitioning properties of the drugs.
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Affiliation(s)
- Carolina Aloisio
- Unidad de Investigación y Desarrollo en Ciencia y Tecnología Farmacéutica (UNITEFA-CONICET), Departamento de Farmacia, Facultad de Ciencias Químicas-Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, X5000HUA, Argentina.,UNESP-Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, Araraquara, São Paulo, 14801-902, Brazil
| | - Marcela R Longhi
- Unidad de Investigación y Desarrollo en Ciencia y Tecnología Farmacéutica (UNITEFA-CONICET), Departamento de Farmacia, Facultad de Ciencias Químicas-Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba, X5000HUA, Argentina
| | - Anselmo Gomes De Oliveira
- UNESP-Universidade Estadual Paulista, Faculdade de Ciências Farmacêuticas, Araraquara, São Paulo, 14801-902, Brazil
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