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Ruscinc N, Massarico Serafim RA, Almeida C, Rosado C, Baby AR. Challenging the safety and efficacy of topically applied chlorogenic acid, apigenin, kaempferol, and naringenin by HET-CAM, HPLC-TBARS-EVSC, and laser Doppler flowmetry. Front Chem 2024; 12:1400881. [PMID: 38831914 PMCID: PMC11144873 DOI: 10.3389/fchem.2024.1400881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 04/29/2024] [Indexed: 06/05/2024] Open
Abstract
The integumentary system, a vital organ, constitutes a multifaceted barrier against pathogens and environmental factors, crucial for maintaining homeostasis. Intrinsic and extrinsic factors can accelerate skin aging and compromise its homeostatic functions and solar rays, particularly ultraviolet (UV) radiation, pose a significant risk for skin cancer. Polyphenols are molecules that donate hydrogen or electrons, preventing the oxidation of substances, such as lipids, or the formation of inflammatory mediators by cyclooxygenase enzymes. This study explored the in vitro safety, by HET-CAM (hen's egg test on chorioallantoic membrane), and protective effects of polyphenols (chlorogenic acid, apigenin, kaempferol, and naringenin) against stratum corneum UV-induced lipid peroxidation using an innovative method, the HPLC-TBARS-EVSC (high-performance liquid chromatography-thiobarbituric acid reactive substances-ex vivo stratum corneum), and a stress test using methyl nicotinate and laser Doppler flowmetry to establish in vivo the samples' topical anti-inflammatory ability. An aqueous gel containing 0.1% w/w of each polyphenol was formulated using ammonium acryloyldimethyltaurate/VP copolymer. Through the utilization of the HET-CAM assay for in vitro safety assessment, chlorogenic acid, apigenin, kaempferol, and naringenin were classified as non-irritating active ingredients. This classification was based on their lack of adverse reactions within the vascularization of the chorioallantoic membrane. To assess the protective capabilities of four polyphenols against lipid peroxidation in the stratum corneum, the HPLC-TBARS-EVSC protocol was conducted. It was observed that only naringenin exhibited a significant reduction in epidermal lipoperoxidation, indicating superior anti-radical potential. Conversely, chlorogenic acid, apigenin, and kaempferol displayed a pro-oxidant profile under the specified test conditions. The laser Doppler flowmetry suggested the anti-inflammatory potential of naringenin, kaempferol, and chlorogenic acid, with naringenin showing superior efficacy involving all parameters quantified. Naringenin emerged as the only polyphenol capable of reducing the intensity of the inflammatory response induced by methyl nicotinate solution in the participants, compared to the blank gel and the untreated area. This comprehensive investigation underscores the diverse protective roles of polyphenols in skin health, emphasizing naringenin's notable anti-radical and anti-inflammatory properties.
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Affiliation(s)
- Nadia Ruscinc
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Cíntia Almeida
- CBIOS-Universidade Lusófona’s Research Center for Biosciences and Health Technologies, Lisbon, Portugal
- Department of Biomedical Sciences, University of Alcalá, Madrid, Spain
| | - Catarina Rosado
- CBIOS-Universidade Lusófona’s Research Center for Biosciences and Health Technologies, Lisbon, Portugal
| | - André Rolim Baby
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
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Jayabal H, Bates-Jensen BM, Abiakam NS, Worsley PR, Bader DL. The identification of biophysical parameters which reflect skin status following mechanical and chemical insults. Clin Physiol Funct Imaging 2021; 41:366-375. [PMID: 33934487 DOI: 10.1111/cpf.12707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 04/26/2021] [Indexed: 12/25/2022]
Abstract
BACKGROUND Skin is constantly exposed to mechanical and chemical insults, in the form of prolonged loading, overhydration or exposure to irritants. An array of non-invasive biophysical tools has been adopted to monitor the changes in skin response. The present study aims to identify a set of robust parameters sensitive to mechanical and chemical challenges to skin integrity. MATERIALS AND METHODS Eleven healthy participants were recruited to evaluate the skin response following mechanical loading, tape stripping, overhydration and chemical irritation. Forearm skin responses were recorded at baseline and at three time points following the insult. Measurements included transepidermal water loss, sub-epidermal moisture, erythema and laser Doppler imaging. Thresholds were informed by basal values, and the sensitivity of parameters to detect skin changes was evaluated. RESULTS High degree of variability in skin response was observed with selected biophysical parameters, such as sub-epidermal moisture, laser Doppler imaging and erythema, even in the absence of an applied insult. Temporal skin response revealed distinct response profiles during each evoked insult. Indeed, the sensitivity of the biophysical parameters was influenced by the threshold values and time point of measurement. Some statistically significant correlations were determined between the biophysical parameters. CONCLUSION The study revealed that thresholds derived from single biophysical parameters were limited in detecting skin changes following insults. A complementary evaluation using combined parameters has the potential to provide a more sensitive assessment. Further research is required to identify robust biophysical parameters, to aid the early detection of skin damage in clinical settings.
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Affiliation(s)
- Hemalatha Jayabal
- School of Health Sciences, University of Southampton, Southampton, UK
| | - Barbara M Bates-Jensen
- School of Nursing and David Geffen School of Medicine, University of California at Los Angeles (UCLA), Los Angeles, CA, USA
| | | | - Peter R Worsley
- School of Health Sciences, University of Southampton, Southampton, UK
| | - Dan L Bader
- School of Health Sciences, University of Southampton, Southampton, UK
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Hall PT, Bratcher SZ, Stubbs C, Rifkin RE, Grzeskowiak RM, Burton BJ, Greenacre CB, Stephenson SM, Anderson DE, Crouch DL. Fully Implanted Prostheses for Musculoskeletal Limb Reconstruction After Amputation: An In Vivo Feasibility Study. Ann Biomed Eng 2020; 49:1012-1021. [PMID: 33034786 DOI: 10.1007/s10439-020-02645-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 09/30/2020] [Indexed: 11/28/2022]
Abstract
Previous prostheses for replacing a missing limb following amputation must be worn externally on the body. This limits the extent to which prostheses could physically interface with biological tissues, such as muscles, to enhance functional recovery. The objectives of our study were to (1) test the feasibility of implanting a limb prosthesis, or endoprosthesis, entirely within living skin at the distal end of a residual limb, and (2) identify effective surgical and post-surgical care approaches for implanting endoprostheses in a rabbit model of hindlimb amputation. We iteratively designed, fabricated, and implanted unjointed endoprosthesis prototypes in six New Zealand White rabbits following amputation. In the first three rabbits, the skin failed to heal due to ishemia and dehiscence along the sutured incision. The skin of the final three subsequent rabbits successfully healed over the endoprotheses. Factors that contributed to successful outcomes included modifying the surgical incision to preserve vasculature; increasing the radii size on the endoprostheses to reduce skin stress; collecting radiographs pre-surgery to match the bone pin size to the medullary canal size; and ensuring post-operative bandage integrity. These results will support future work to test jointed endoprostheses that can be attached to muscles.
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Affiliation(s)
- Patrick T Hall
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, 1512 Middle Dr, Knoxville, TN, 37966, USA.
| | - Samantha Z Bratcher
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, 1512 Middle Dr, Knoxville, TN, 37966, USA
| | - Caleb Stubbs
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, 1512 Middle Dr, Knoxville, TN, 37966, USA
| | - Rebecca E Rifkin
- Department of Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, USA
| | - Remi M Grzeskowiak
- Department of Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, USA
| | - Bryce J Burton
- Office of Laboratory Animal Care, University of Tennessee College of Veterinary Medicine, Knoxville, TN, USA
| | - Cheryl B Greenacre
- Department of Small Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, USA
| | | | - David E Anderson
- Department of Large Animal Clinical Sciences, University of Tennessee College of Veterinary Medicine, Knoxville, TN, USA
| | - Dustin L Crouch
- Department of Mechanical, Aerospace, and Biomedical Engineering, University of Tennessee, Knoxville, 1512 Middle Dr, Knoxville, TN, 37966, USA
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Ex vivo penetration analysis and anti-inflammatory efficacy of the association of ferulic acid and UV filters. Eur J Pharm Sci 2020; 156:105578. [PMID: 32998032 DOI: 10.1016/j.ejps.2020.105578] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/03/2020] [Accepted: 09/24/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Unprotected chronic exposure to ultraviolet (UV) radiation generates many harmful effects to human skin and sunscreens are essential to health, however, traditional products do not provide enough protection against cutaneous oxidative stress, a process amplified by UV radiation. Therefore, the development of multifunctional photoprotective formulations seems to be a more efficacious approach, since these enable the absorption/reflection of UV radiation and maintain the cutaneous homeostasis. OBJECTIVES In the present study, ferulic acid (FA), a well-known antioxidant, has been combined with two UV filters, bemotrizinol and ethylhexyl triazone, and the safety and efficacy of this formulation has been assessed combining ex vivo and in vivo methods. METHODS Skin permeation assays were performed by applying the formulation in the volar forearm of participants, after which consecutive samples of the stratum corneum were collected by tape stripping, and the quantification of FA, bemotrizinol and ethylhexyl triazone was performed by high-performance liquid chromatography (HPLC). Also, the FA anti-inflammatory action in combination with the UV filters was probed through a method employing Laser Doppler flowmetry to measure the vasodilatory response to methyl nicotinate topical application. RESULTS Skin permeation assay was able to characterize the penetration depth of each substance. It should also be noted that a specific HPLC analytical method was developed in this study to enable the rapid simultaneous quantification of the three substances. Results from Laser Doppler flowmetry showed that the FA was able to mitigate the vasodilatory response. CONCLUSIONS FA proved to be a valuable resource in a multifunction sunscreen, not only providing an increase in the SPF of sunscreens, previously published, but also decreasing the extent of inflammation.
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Banerjee G, Briggs M, Johnson MI. The immediate effects of kinesiology taping on cutaneous blood flow in healthy humans under resting conditions: A randomised controlled repeated-measures laboratory study. PLoS One 2020; 15:e0229386. [PMID: 32084245 PMCID: PMC7034885 DOI: 10.1371/journal.pone.0229386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 02/05/2020] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Kinesiology taping (KT) is used in musculoskeletal practice for preventive and rehabilitative purposes. It is claimed that KT improves blood flow in the microcirculation by creating skin convolutions and that this reduces swelling and facilitates healing of musculoskeletal injuries. There is a paucity of physiological studies evaluating the effect of KT on cutaneous blood microcirculation. OBJECTIVES The purpose of this parallel-group controlled laboratory repeated measures design study was to evaluate the effects of KT on cutaneous blood microcirculation in healthy human adults using a dual wavelength (infrared and visible-red) laser Doppler Imaging (LDI) system. KT was compared with rigid taping and no taping controls to isolate the effects associated with the elasticity of KT. METHODS Forty-five healthy male and female human adults were allocated to one of the three interventions using constrained randomisation following the pre-intervention measurement: (i) KT (ii) ST (standard taping) (iii) NT (no taping). Cutaneous blood perfusion was measured using LDI in the ventral surface of forearm at pre-intervention, during-intervention and post-intervention in a normothermic environment at resting conditions. RESULTS Mixed ANOVA of both infrared and visible-red datasets revealed no statistically significant interaction between Intervention and Time. There was statistically significant main effect for Time but not Intervention. CONCLUSION KT does not increase cutaneous blood microcirculation in healthy human adults under resting physiological conditions in a normothermic environment. On the contrary, evidence suggests that taping, regardless of the elasticity in the tape, is associated with immediate reductions in cutaneous blood flow.
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Affiliation(s)
- Gourav Banerjee
- Centre for Pain Research, School of Clinical and Applied Sciences, Leeds Beckett University, Leeds, England, United Kingdom
- * E-mail:
| | - Michelle Briggs
- Division of Nursing, Midwifery and Social Work, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, England, United Kingdom
| | - Mark I. Johnson
- Centre for Pain Research, School of Clinical and Applied Sciences, Leeds Beckett University, Leeds, England, United Kingdom
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Saednia K, Tabbarah S, Lagree A, Wu T, Klein J, Garcia E, Hall M, Chow E, Rakovitch E, Childs C, Sadeghi-Naini A, Tran WT. Quantitative Thermal Imaging Biomarkers to Detect Acute Skin Toxicity From Breast Radiation Therapy Using Supervised Machine Learning. Int J Radiat Oncol Biol Phys 2020; 106:1071-1083. [PMID: 31982495 DOI: 10.1016/j.ijrobp.2019.12.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 12/11/2019] [Accepted: 12/24/2019] [Indexed: 12/29/2022]
Abstract
PURPOSE Radiation-induced dermatitis is a common side effect of breast radiation therapy (RT). Current methods to evaluate breast skin toxicity include clinical examination, visual inspection, and patient-reported symptoms. Physiological changes associated with radiation-induced dermatitis, such as inflammation, may also increase body-surface temperature, which can be detected by thermal imaging. Quantitative thermal imaging markers were identified and used in supervised machine learning to develop a predictive model for radiation dermatitis. METHODS AND MATERIALS Ninety patients treated for adjuvant whole-breast RT (4250 cGy/fx = 16) were recruited for the study. Thermal images of the treated breast were taken at 4 intervals: before RT, then weekly at fx = 5, fx = 10, and fx = 15. Parametric thermograms were analyzed and yielded 26 thermal-based features that included surface temperature (°C) and texture parameters obtained from (1) gray-level co-occurrence matrix, (2) gray-level run-length matrix, and (3) neighborhood gray-tone difference matrix. Skin toxicity was evaluated at the end of RT using the Common Terminology Criteria for Adverse Events (CTCAE) guidelines (Ver.5). Binary group classes were labeled according to a CTCAE cut-off score of ≥2, and thermal features obtained at fx = 5 were used for supervised machine learning to predict skin toxicity. The data set was partitioned for model training, independent testing, and validation. Fifteen patients (∼17% of the whole data set) were randomly selected as an unseen test data set, and 75 patients (∼83% of the whole data set) were used for training and validation of the model. A random forest classifier with leave-1-patient-out cross-validation was employed for modeling single and hybrid parameters. The model performance was reported using receiver operating characteristic analysis on patients from an independent test set. RESULTS Thirty-seven patients presented with adverse skin effects, denoted by a CTCAE score ≥2, and had significantly higher local increases in skin temperature, reaching 36.06°C at fx = 10 (P = .029). However, machine-learning models demonstrated early thermal signals associated with skin toxicity after the fifth RT fraction. The cross-validated model showed high prediction accuracy on the independent test data (test accuracy = 0.87) at fx = 5 for predicting skin toxicity at the end of RT. CONCLUSIONS Early thermal markers after 5 fractions of RT are predictive of radiation-induced skin toxicity in breast RT.
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Affiliation(s)
- Khadijeh Saednia
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Electrical Engineering and Computer Science, York University, Toronto, Canada
| | - Sami Tabbarah
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada; Evaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, Canada
| | - Andrew Lagree
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Tina Wu
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Jonathan Klein
- Department of Radiation Oncology, Albert Einstein College of Medicine, New York City, New York
| | - Eduardo Garcia
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Michael Hall
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada
| | - Edward Chow
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Eileen Rakovitch
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada
| | - Charmaine Childs
- Department of Radiotherapy & Oncology, Sheffield Hallam University, Sheffield, United Kingdom
| | - Ali Sadeghi-Naini
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada; Department of Electrical Engineering and Computer Science, York University, Toronto, Canada; Physical Sciences Platform, Sunnybrook Research Institute, Toronto, Canada
| | - William T Tran
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, Canada; Evaluative Clinical Sciences Platform, Sunnybrook Research Institute, Toronto, Canada; Department of Radiation Oncology, University of Toronto, Toronto, Canada; Department of Radiotherapy & Oncology, Sheffield Hallam University, Sheffield, United Kingdom; Department of Biomedical Physics, Ryerson University, Toronto, Canada.
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7
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Chen YC, Wang PR, Lai TJ, Lu LH, Dai LW, Wang CH. Using therapeutic ultrasound to promote irritated skin recovery after surfactant-induced barrier disruption. ULTRASONICS 2019; 91:206-212. [PMID: 30122437 DOI: 10.1016/j.ultras.2018.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 07/10/2018] [Accepted: 08/12/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Surfactant-induced skin barrier disruption can enhance blood flow and water content in the superficial skin. The effect of therapeutic ultrasound on accelerating the recovery of superficial skin after skin barrier disruption has seldom been studied. OBJECTIVE To understand the effects of therapeutic ultrasound on barrier recovery, we used the sodium lauryl sulfate irritation model and treatment with ultrasound intervention. METHODS The study allocated 30 healthy subjects into an ultrasound group (n = 15) and a control group (n = 15), each divided into three subgroups (sodium lauryl sulfate at concentrations of 1.0%, 0.5%, and 0%). Pulsed ultrasound (1 MHz, 0.3 W/cm2SATA) was applied to ultrasound subgroups. The treatment effect was evaluated by the recovery rate of enhanced blood flow and water content. RESULTS The results indicated a surfactant dose-dependent effect on blood flow, but not on water content. The recovery rates of enhanced blood flow were higher in the 0.5% and 1.0% ultrasound subgroups than in the control subgroups throughout the experiment. However, recovery rates of water content were higher in the ultrasound subgroups than in the control subgroups only on Day2. CONCLUSIONS Pulsed ultrasound accelerated the barrier recovery by reducing the enhanced blood flow and water content after skin barrier disruption.
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Affiliation(s)
- Yueh-Chi Chen
- Institute of Medicine, Chung Shan Medical University, and Physical Therapy Room, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Peir-Renn Wang
- Department of Physical Medicine and Rehabilitation, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Te-Jen Lai
- Institute of Medicine, Chung Shan Medical University, and Department of Psychiatry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Li-Hua Lu
- Physical Therapy Room, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Long-Wei Dai
- Department of Physical Medicine and Rehabilitation, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chun-Hou Wang
- Department of Physical Therapy, Chung Shan Medical University, and Physical Therapy Room, Chung Shan Medical University Hospital, Taichung, Taiwan.
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Olsen J, Birch-Johansen FH, Themstrup L, Holmes J, Jemec GBE. Dynamic optical coherence tomography of histamine induced wheals. Skin Res Technol 2018; 24:592-598. [DOI: 10.1111/srt.12470] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/02/2018] [Indexed: 01/08/2023]
Affiliation(s)
- J. Olsen
- Department of Dermatology; Zealand University Hospital; Roskilde Denmark
- Health Sciences Faculty; University of Copenhagen; Copenhagen Denmark
| | - F. H. Birch-Johansen
- Department of Dermatology; Zealand University Hospital; Roskilde Denmark
- Health Sciences Faculty; University of Copenhagen; Copenhagen Denmark
| | - L. Themstrup
- Department of Dermatology; Zealand University Hospital; Roskilde Denmark
- Health Sciences Faculty; University of Copenhagen; Copenhagen Denmark
| | - J. Holmes
- Michelson Diagnostics Ltd; Maidstone UK
| | - G. B. E. Jemec
- Department of Dermatology; Zealand University Hospital; Roskilde Denmark
- Health Sciences Faculty; University of Copenhagen; Copenhagen Denmark
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Bader DL, Worsley PR. Technologies to monitor the health of loaded skin tissues. Biomed Eng Online 2018; 17:40. [PMID: 29650012 PMCID: PMC5897925 DOI: 10.1186/s12938-018-0470-z] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 03/24/2018] [Indexed: 01/18/2023] Open
Abstract
There are many situations where the skin and underlying soft tissues are compromised by mechanical loading in the form or pressure, or pressure in combination with shear. If sustained, this can lead to damage in the tissues particularly adjacent to bony prominences, resulting in chronic wounds. An array of bioengineering technologies have been adopted to assess the integrity of loaded soft tissues. This paper aims to review these approaches for the quantification, simulation and early detection of mechanically-induced skin damage. The review considers different measurements at the interface between the skin and support surface/medical device, involving pressure, shear, friction and the local microclimate. The potential of the techniques to monitor the physiological response of the skin to these external stimuli including biophysical measurement devices and sampling of biofluids are critically analysed. In addition, it includes an analysis of medical imaging technologies and computational modelling to provide a means by which tissue deformation can be quantified and thresholds for tissue damage defined. Bioengineering measurement and imaging technologies have provided an insight into the temporal status of loaded skin. Despite the advances in technology, to date, the translation to clinical tools which are robust and cost effective has been limited. There is a need to adapt existing technologies and simulation platforms to enable patients, carers and clinicians to employ appropriate intervention strategies to minimise soft tissue damage.
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Affiliation(s)
- Dan L Bader
- Skin Health Group, Faculty of Health Sciences, University of Southampton, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK.
| | - Peter R Worsley
- Skin Health Group, Faculty of Health Sciences, University of Southampton, Southampton General Hospital, Tremona Road, Southampton, SO16 6YD, UK.
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Disease Severity and Quality of Life Measurements in Contact Dermatitis: A Systematic Review 2005–2015. Dermatitis 2016; 27:362-371. [DOI: 10.1097/der.0000000000000235] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Bandier J, Carlsen B, Rasmussen M, Petersen L, Johansen J. Skin reaction and regeneration after single sodium lauryl sulfate exposure stratified by filaggrin genotype and atopic dermatitis phenotype. Br J Dermatol 2015; 172:1519-1529. [DOI: 10.1111/bjd.13651] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/05/2015] [Indexed: 12/27/2022]
Affiliation(s)
- J. Bandier
- National Allergy Research Centre; Department of Dermato-Allergology; Copenhagen University Hospital Gentofte; Kildegårdsvej 28 2900 Hellerup Denmark
| | - B.C. Carlsen
- National Allergy Research Centre; Department of Dermato-Allergology; Copenhagen University Hospital Gentofte; Kildegårdsvej 28 2900 Hellerup Denmark
| | - M.A. Rasmussen
- Faculty of Science; University of Copenhagen; Frederiksberg Denmark
| | - L.J. Petersen
- Department of Nuclear Medicine; Aalborg University Hospital; Aalborg Denmark
- Department of Clinical Medicine; Aalborg University Hospital; Aalborg Denmark
| | - J.D. Johansen
- National Allergy Research Centre; Department of Dermato-Allergology; Copenhagen University Hospital Gentofte; Kildegårdsvej 28 2900 Hellerup Denmark
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Di Giminiani P, Petersen LJ, Herskin MS. Capsaicin-induced neurogenic inflammation in pig skin: a behavioural study. Res Vet Sci 2014; 96:447-53. [PMID: 24746289 DOI: 10.1016/j.rvsc.2014.03.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 03/06/2014] [Accepted: 03/30/2014] [Indexed: 02/03/2023]
Abstract
Topical capsaicin is a well-established model of experimental hyperalgesia. Its application to the study of animals has been limited to few species. The effect of topical capsaicin on hyperalgesia in porcine skin was evaluated as part of a study of inflammatory pain in the pig. Two experiments were carried out on pigs of 27 ± 5 kg (n = 8) and 57 ± 3 kg (n = 16). Thermal and mechanical noxious stimuli were provided (CO2 laser and Pressure Application Measurement device) to assess avoidance behaviours. Capsaicin induced significant thermal hyperalgesia in the smaller pigs (P < 0.05), while no mechanical hyperalgesia was observed in either animal group. The present model of topical capsaicin application may be useful to investigate the mechanisms of primary hyperalgesia in this species, although some experimental conditions, such as the administration route and cutaneous morphology, need to be evaluated.
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Affiliation(s)
- Pierpaolo Di Giminiani
- Department of Animal Science, Aarhus University, AU-FOULUM, Blichers Allé, DK-8830 Tjele, Denmark.
| | - Lars J Petersen
- Department of Clinical Medicine, Aalborg University, Sdr. Skovvej 11, DK-9000 Aalborg, Denmark; Department of Nuclear Medicine, Aalborg University Hospital, Hobrovej 18-22, DK-9000 Aalborg, Denmark
| | - Mette S Herskin
- Department of Animal Science, Aarhus University, AU-FOULUM, Blichers Allé, DK-8830 Tjele, Denmark
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Dreno B, Araviiskaia E, Berardesca E, Bieber T, Hawk J, Sanchez-Viera M, Wolkenstein P. The science of dermocosmetics and its role in dermatology. J Eur Acad Dermatol Venereol 2014; 28:1409-17. [PMID: 24684296 DOI: 10.1111/jdv.12497] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 03/03/2014] [Indexed: 12/12/2022]
Abstract
Our increased knowledge of normal skin physiology has ushered in a subtle revolution in cosmetic science. Originally designed as preparations to enhance personal appearance by direct application on to the skin, cosmetics have now taken on a new role in dermatology, through the support of the management of many skin disorders. This evolving role of cosmetics in skin care is primarily due to scientific and technological advancements that have changed our understanding of normal skin physiology and how cosmetics modify its appearance both physically and biologically. The vast array of techniques currently available to investigate skin responsivity to multiple stimuli has brought about a new era in cosmetic and dermocosmetic development based on a robust understanding of skin physiology and its varied responses to commonly encountered environmental insults. Most cosmetic research is undertaken on reconstructed skin models crucial in dermatological research, given the strict ban imposed by the European Union on animal testing. In addition, the design and conduct of trials evaluating cosmetics now follow rules comparable to those used in the development and evaluation of pharmaceutical products. Cosmetic research should now aim to ensure all trials adhere to strictly reproducible and scientifically sound methodologies. The objective of this review is to provide an overview of the multidisciplinary scientific approach used in formulating dermocosmetics, and to examine the major advances in dermocosmetic development and assessment, the safety and regulatory guidelines governing their production and the exciting future outlook for these dermocosmetic processes following good practice rules.
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Affiliation(s)
- B Dreno
- Department of Dermato Cancerology, Nantes University, Nantes, France
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