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Bertolini M, Gherardini J, Chéret J, Alam M, Sulk M, Botchkareva NV, Biro T, Funk W, Grieshaber F, Paus R. Mechanical epilation exerts complex biological effects on human hair follicles and perifollicular skin: An ex vivo study approach. Int J Cosmet Sci 2024; 46:175-198. [PMID: 37923568 DOI: 10.1111/ics.12923] [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: 07/06/2023] [Revised: 10/04/2023] [Accepted: 10/12/2023] [Indexed: 11/07/2023]
Abstract
OBJECTIVE Electrical epilation of unwanted hair is a widely used hair removal method, but it is largely unknown how this affects the biology of human hair follicles (HF) and perifollicular skin. Here, we have begun to explore how mechanical epilation changes selected key biological read-out parameters ex vivo within and around the pilosebaceous unit. METHODS Human full-thickness scalp skin samples were epilated ex vivo using an electro-mechanical device, organ-cultured for up to 6 days in serum-free, supplemented medium, and assessed at different time points by quantitative (immuno-)histomorphometry for selected relevant read-out parameters in epilated and sham-epilated control samples. RESULTS Epilation removed most of the hair shafts, often together with fragments of the outer and inner root sheath and hair matrix. This was associated with persistent focal thinning of the HF basal membrane, decreased melanin content of the residual HF epithelium, and increased HF keratinocyte apoptosis, including in the bulge, yet without affecting the number of cytokeratin 15+ HF epithelial stem cells. Sebocyte apoptosis in the peripheral zone was increased, albeit without visibly altering sebum production. Epilation transiently perturbed HF immune privilege, and increased the expression of ICAM-1 in the bulge and bulb mesenchyme, and the number of perifollicular MHC class II+ cells as well as mast cells around the distal epithelium and promoted mast cell degranulation around the suprabulbar and bulbar area. Moreover, compared to controls, several key players of neurogenic skin inflammation, itch, and/or thermosensation (TRPV1, TRPA1, NGF, and NKR1) were differentially expressed in post-epilation skin. CONCLUSION These data generated in denervated, organ-cultured human scalp skin demonstrate that epilation-induced mechanical HF trauma elicits surprisingly complex biological responses. These may contribute to the delayed re-growth of thinner and lighter hair shafts post-epilation and temporary post-epilation discomfort. Our findings also provide pointers regarding the development of topically applicable agents that minimize undesirable sequelae of epilation.
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Affiliation(s)
- Marta Bertolini
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Jennifer Gherardini
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Jérémy Chéret
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Majid Alam
- Department of Dermatology and Venereology, Qatar Translational Research Institute, Hamad Medical Corporation, Doha, Qatar
| | - Mathias Sulk
- Department of Dermatology, University of Münster, Münster, Germany
| | - Natalia V Botchkareva
- Department of Dermatology, Boston University Chobanian and Avedisian School of Medicine, Boston, Massachusetts, USA
| | - Tamas Biro
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Wolfgang Funk
- Clinic for Plastic, Aesthetic and Reconstructive Surgery, Dr. Dr. med. Funk, Munich, Germany
| | | | - Ralf Paus
- Monasterium Laboratory Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
- CUTANEON - Skin & Hair Innovations, Hamburg, Germany
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Smiljanić K, Prodić I, Trifunovic S, Krstić Ristivojević M, Aćimović M, Stanković Jeremić J, Lončar B, Tešević V. Multistep Approach Points to Compounds Responsible for the Biological Activity and Safety of Hydrolates from Nine Lamiaceae Medicinal Plants on Human Skin Fibroblasts. Antioxidants (Basel) 2023; 12:1988. [PMID: 38001841 PMCID: PMC10669667 DOI: 10.3390/antiox12111988] [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: 10/10/2023] [Revised: 10/29/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
As byproducts of essential oil distillation, hydrolates are used in natural cosmetics/biomedicine due to their beneficial skin effects. However, data on their safety with relevant biological targets, such as human skin cells, are scarce. Therefore, we have tested nine hydrolates from the Lamiaceae family with skin fibroblasts that are responsible for extracellular collagenous matrix builds. Thyme, oregano, and winter savoury hydrolates showed several times higher total phenolics, which correlated strongly with their radical scavenging and antioxidative capacity; there was no correlation between their viability profiles and the reducing sugar levels. No proteins/peptides were detected. All hydrolates appeared safe for prolonged skin exposure except for 10-fold diluted lavender, which showed cytotoxicity (~20%), as well as rosemary and lavandin (~10%) using viability, DNA synthesis, and cell count testing. Clary sage, oregano, lemon balm, and thyme hydrolates (10-fold diluted) increased fibroblast viability and/or proliferation by 10-30% compared with the control, while their viability remained unaffected by Mentha and winter savoury. In line with the STITCH database, increased viability could be attributed to thymol presence in oregano and thyme hydrolates in lemon balm, which is most likely attributable to neral and geranial. The proliferative effect of clary sage could be supported by alpha-terpineol, not linalool. The major volatile organic compounds (VOCs) associated with cytotoxic effects on fibroblasts were borneol, 1,8-cineole, and terpinene-4-ol. Further research with pure compounds is warranted to confirm the roles of VOCs in the observed effects that are relevant to cosmetic and wound healing aspects.
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Affiliation(s)
- Katarina Smiljanić
- University of Belgrade—Faculty of Chemistry (UBFC), Studentski Trg 12–16, 11158 Belgrade, Serbia; (M.K.R.); (V.T.)
| | - Ivana Prodić
- Institute of Virology, Vaccines and Sera “Torlak”—National Institute of the Republic of Serbia, Vojvode Stepe 458, 11152 Belgrade, Serbia;
| | - Sara Trifunovic
- Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade, Serbia;
- Mediterranean Institute for Life Sciences, 21000 Split, Croatia
| | - Maja Krstić Ristivojević
- University of Belgrade—Faculty of Chemistry (UBFC), Studentski Trg 12–16, 11158 Belgrade, Serbia; (M.K.R.); (V.T.)
| | - Milica Aćimović
- Institute of Field and Vegetable Crops—National Institute of the Republic of Serbia, 21101 Novi Sad, Serbia;
| | - Jovana Stanković Jeremić
- Institute of Chemistry, Technology and Metallurgy, National Institute of the Republic of Serbia, University of Belgrade, 11000 Belgrade, Serbia;
| | - Biljana Lončar
- Faculty of Technology Novi Sad, University of Novi Sad, 21000 Novi Sad, Serbia;
| | - Vele Tešević
- University of Belgrade—Faculty of Chemistry (UBFC), Studentski Trg 12–16, 11158 Belgrade, Serbia; (M.K.R.); (V.T.)
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3
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Samra T, Gomez-Gomez T, Linowiecka K, Akhundlu A, Lopez de Mendoza G, Gompels M, Lee WW, Gherardini J, Chéret J, Paus R. Melatonin Exerts Prominent, Differential Epidermal and Dermal Anti-Aging Properties in Aged Human Eyelid Skin Ex Vivo. Int J Mol Sci 2023; 24:15963. [PMID: 37958946 PMCID: PMC10647640 DOI: 10.3390/ijms242115963] [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: 09/13/2023] [Revised: 10/27/2023] [Accepted: 10/31/2023] [Indexed: 11/15/2023] Open
Abstract
Human skin aging is associated with functional deterioration on multiple levels of physiology, necessitating the development of effective skin senotherapeutics. The well-tolerated neurohormone melatonin unfolds anti-aging properties in vitro and in vivo, but it remains unclear whether these effects translate to aged human skin ex vivo. We tested this in organ-cultured, full-thickness human eyelid skin (5-6 donors; 49-77 years) by adding melatonin to the culture medium, followed by the assessment of core aging biomarkers via quantitative immunohistochemistry. Over 6 days, 200 µM melatonin significantly downregulated the intraepidermal activity of the aging-promoting mTORC1 pathway (as visualized by reduced S6 phosphorylation) and MMP-1 protein expression in the epidermis compared to vehicle-treated control skin. Conversely, the transmembrane collagen 17A1, a key stem cell niche matrix molecule that declines with aging, and mitochondrial markers (e.g., TFAM, MTCO-1, and VDAC/porin) were significantly upregulated. Interestingly, 100 µM melatonin also significantly increased the epidermal expression of VEGF-A protein, which is required and sufficient for inducing human skin rejuvenation. In aged human dermis, melatonin significantly increased fibrillin-1 protein expression and improved fibrillin structural organization, indicating an improved collagen and elastic fiber network. In contrast, other key aging biomarkers (SIRT-1, lamin-B1, p16INK4, collagen I) remained unchanged. This ex vivo study provides proof of principle that melatonin indeed exerts long-suspected but never conclusively demonstrated and surprisingly differential anti-aging effects in aged human epidermis and dermis.
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Affiliation(s)
- Tara Samra
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Tatiana Gomez-Gomez
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Kinga Linowiecka
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
- Department of Human Biology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1, 87-100 Torun, Poland
| | - Aysun Akhundlu
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Gabriella Lopez de Mendoza
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Matthew Gompels
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Wendy W. Lee
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami Miller School of Medicine, Miami, FL 33125, USA
| | - Jennifer Gherardini
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Jérémy Chéret
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
| | - Ralf Paus
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, FL 33125, USA; (T.S.); (T.G.-G.); (K.L.); (A.A.); (J.G.); (J.C.)
- Monasterium Laboratory, 48149 Muenster, Germany
- CUTANEON—Skin & Hair Innovations, 22335 Hamburg, Germany
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Piccini I, Chéret J, Tsutsumi M, Sakaguchi S, Ponce L, Almeida L, Funk W, Kückelhaus M, Kajiya K, Paus R, Bertolini M. Preliminary evidence that Merkel cells exert chemosensory functions in human epidermis. Exp Dermatol 2023; 32:1848-1855. [PMID: 37587642 DOI: 10.1111/exd.14907] [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: 02/07/2023] [Revised: 05/30/2023] [Accepted: 07/31/2023] [Indexed: 08/18/2023]
Abstract
The mechanotransduction of light-touch sensory stimuli is considered to be the main physiological function of epidermal Merkel cells (MCs). Recently, however, MCs have been demonstrated to be also thermo-sensitive, suggesting that their role in skin physiologically extends well beyond mechanosensation. Here, we demonstrate that in healthy human skin epidermal MCs express functional olfactory receptors, namely OR2AT4, just like neighbouring keratinocytes. Selective stimulation of OR2AT4 by topical application of the synthetic odorant, Sandalore®, significantly increased Piccolo protein expression in MCs, as assessed by quantitative immunohistomorphometry, indicating increased vesicle trafficking and recycling, and significantly reduced nerve growth factor (NGF) immunoreactivity within MCs, possibly indicating increased neurotrophin release upon OR2AT4 activation. Live-cell imaging showed that Sandalore® rapidly induces a loss of FFN206-dependent fluorescence in MCs, suggesting OR2AT4-dependent MC depolarization and subsequent vesicle secretion. Yet, in contrast to keratinocytes, OR2AT4 stimulation by Sandalore® altered neither the number nor the proliferation status of MCs. These preliminary ex vivo findings demonstrate that epidermal MCs also exert OR-dependent chemosensory functions in human skin, and invite one to explore whether these newly identified properties are dysregulated in selected skin disorders, for example, in pruritic dermatoses, and if these novel MC functions can be therapeutically targeted to maintain/promote skin health.
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Affiliation(s)
- Ilaria Piccini
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Jeremy Chéret
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Moe Tsutsumi
- MIRAI Technology Institute, Shiseido Co., Ltd., Yokohama, Japan
| | - Saito Sakaguchi
- MIRAI Technology Institute, Shiseido Co., Ltd., Yokohama, Japan
| | - Leslie Ponce
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Luis Almeida
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
| | - Wolfgang Funk
- Clinic for Plastic, Aesthetic and Reconstructive Surgery, Munich, Germany
| | | | - Kentaro Kajiya
- MIRAI Technology Institute, Shiseido Co., Ltd., Yokohama, Japan
| | - Ralf Paus
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
- Dr. Phillip Frost Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
- CUTANEON - Skin & Hair Innovations, Hamburg, Germany
| | - Marta Bertolini
- Monasterium Laboratory, Skin and Hair Research Solutions GmbH, Münster, Germany
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Tamari M, Zamidar L, Ver Heul AM, Nograles K, Goncalves J, Guttman-Yassky E, Lebwohl M, Kim BS. Difelikefalin suppresses itch and reduces scratching independent of inflammation in a murine model of atopic dermatitis. J Allergy Clin Immunol 2023; 152:927-932. [PMID: 37453613 DOI: 10.1016/j.jaci.2023.06.022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 06/07/2023] [Accepted: 06/23/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Therapies specifically targeting nonhistaminergic pruritus are largely lacking. Difelikefalin (DFK) has been found to reduce itch in various chronic pruritic conditions, including atopic dermatitis (AD). OBJECTIVE We sought to investigate the ability of DFK to impact scratching behavior, inflammatory mediators, and neuronal signaling in a murine model of AD. METHODS The ears of C57BL/6 mice were topically treated with MC903 for 12 consecutive days to induce AD-like inflammation and itch. Before MC903 treatment, mice were treated with either DFK (0.5 mg/kg, intraperitoneal injection twice daily) or vehicle (saline). Skin ear thickness, histological analysis, flow cytometry, RNA-sequencing, and differential gene expression analyses of mouse ear skin were used to examine the effect of DFK on skin inflammation. Scratching behavior was quantified to measure itch behavior in mice that were topically treated with MC903 for 6 consecutive days; then, mice received a single injection of either DFK (1.0 mg/kg, intraperitoneal injection) or saline. Calcium imaging and single-cell RNA-sequencing were used in mouse dorsal root ganglia neurons to determine the size of the neurons activated with DFK treatment. Statistical significance was determined by Mann-Whitney test, unless otherwise noted. RESULTS DFK rapidly suppressed itch without altering AD-like skin inflammation in MC903 (calcipotriol)-treated mice. In vitro Ca2+ influx trace of dorsal root ganglia suggested that a major target for DFK is the larger-diameter mechanoreceptors (eg, Aꞵ-fibers), rather than small-diameter pruriceptive C-fibers. CONCLUSIONS These studies support a potential neuromodulatory role of DFK for reducing itch associated with AD in mice.
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Affiliation(s)
- Masato Tamari
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - Lydia Zamidar
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - Aaron M Ver Heul
- Washington University School of Medicine in St Louis, St Louis, Mo
| | | | | | | | - Mark Lebwohl
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - Brian S Kim
- Icahn School of Medicine at Mount Sinai, New York, NY.
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6
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Guttman-Yassky E, Facheris P, Da Rosa JC, Rothenberg-Lausell C, Del Duca E, David E, Estrada Y, Liu Y, Bose S, Chowdhury M, Munera C, Goncalves J, Nograles K, Kim BS, Lebwohl M. Oral difelikefalin reduces moderate to severe pruritus and expression of pruritic and inflammatory biomarkers in subjects with atopic dermatitis. J Allergy Clin Immunol 2023; 152:916-926. [PMID: 37453614 DOI: 10.1016/j.jaci.2023.06.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 06/07/2023] [Accepted: 06/23/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Pruritus is the most common and burdensome symptom of atopic dermatitis (AD). Pruritus-targeted treatments in AD are lacking, particularly for patients with milder skin disease. OBJECTIVE We sought to evaluate the impact of the selective κ-opioid receptor agonist difelikefalin (DFK) on pruritus intensity and pruritus- and immune-related biomarkers in subjects with moderate to severe AD-related pruritus. METHODS A phase 2 clinical trial investigated the efficacy and safety of oral DFK 0.25, 0.5, and 1.0 mg in subjects with moderate to severe AD-related pruritus. A biomarker substudy evaluated the effects of DFK on the expression of pruritus, TH2-associated genes, and skin barrier-related genes. RESULTS In the clinical trial (N = 401), all DFK doses reduced itch versus placebo; however, the results were not statistically significant at week 12. In a subgroup of subjects in the trial with mild to moderate skin inflammation and moderate to severe itch (itch-dominant AD phenotype), DFK reduced itch at week 12 versus placebo. In the biomarker substudy, DFK downregulated the expression of key pruritus-related genes (eg, IL-31 and TRPV1) and the AD phenotype (eg, CCL17). Gene set variation analysis confirmed that DFK, but not placebo, downregulated pruritus-related genes and TH2 pathways. DFK improved skin barrier integrity markers and upregulated the expression of claudins and lipid metabolism-associated genes (eg, SEC14L6, ELOVL3, CYP1A2, and AKR1D1). CONCLUSIONS DFK treatment reduced itch in subjects with moderate to severe AD-related pruritus, particularly those with an "itch-dominant" AD phenotype, and had an impact on the expression of pruritus, TH2-associated genes, and skin barrier-related genes. DFK is a promising therapy for AD-related pruritus; further clinical studies are warranted.
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Affiliation(s)
| | | | | | | | | | - Eden David
- Icahn School of Medicine at Mount Sinai, New York, NY
| | | | - Ying Liu
- Icahn School of Medicine at Mount Sinai, New York, NY
| | - Swaroop Bose
- Icahn School of Medicine at Mount Sinai, New York, NY
| | | | | | | | | | - Brian S Kim
- Icahn School of Medicine at Mount Sinai, New York, NY.
| | - Mark Lebwohl
- Icahn School of Medicine at Mount Sinai, New York, NY
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Wiegmann H, Ständer S, Bobko S, Renkhold L, Lotts T, Zeidler C, Pereira M, Agelopoulos K. Non-Neuronal Kappa Opioid Pathway Profiling in the Skin of Different Chronic Pruritus-Associated Dermatoses. J Invest Dermatol 2023; 143:1845-1848.e2. [PMID: 36871658 DOI: 10.1016/j.jid.2023.02.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/06/2023] [Accepted: 02/16/2023] [Indexed: 03/06/2023]
Affiliation(s)
- Henning Wiegmann
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany.
| | - Sonja Ständer
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany
| | - Svetlana Bobko
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany; Moscow Scientific and Practical Center of Dermatovenerology and Cosmetology, Moscow, Russia
| | - Lina Renkhold
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany
| | - Tobias Lotts
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany
| | - Claudia Zeidler
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany
| | - Manuel Pereira
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany
| | - Konstantin Agelopoulos
- Department of Dermatology and Center for Chronic Pruritus, University Hospital Münster, Münster, Germany
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Τhe Effect of Opioid Administration on Cytologic and Histopathologic Diagnosis of Canine Cutaneous Mast Cell Tumors Treated by Surgical Excision. Vet Sci 2022; 9:vetsci9050202. [PMID: 35622730 PMCID: PMC9143400 DOI: 10.3390/vetsci9050202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/17/2022] [Accepted: 04/19/2022] [Indexed: 12/04/2022] Open
Abstract
Mast cell tumor (MCT) is a frequent cutaneous tumor in dogs, with a variable biological behavior. Studies correlate cytologic and histopathologic features of MCTs with their biological behavior, prognosis, and response to treatment. The use of preoperative opioids is common in canine patients undergoing surgical removal of these tumors. Certain opioids can induce or downregulate mast cell degranulation and influence cancer progression. The aim of the present study was to investigate whether the administration of morphine or butorphanol during surgical excision of canine cutaneous MCTs affects their cytologic and histopathologic appearance, thus influencing cytologic and histopathologic grading. This was a prospective, blinded, randomized, cohort clinical study. Forty-five dogs with cutaneous MCTs were randomly allocated into three groups according to preanaesthetic medication: dexmedetomidine combined with morphine (group M) or butorphanol (group B) or normal saline (group C). Cytologic specimens and histopathologic samples were obtained both prior to and after surgery. Samples were graded according to Kiupel’s and Patnaik’s systems, examined immunohistochemically for Ki-67 protein (Ki-67) and c-kit proto-oncogene product (KIT) expression, and histochemically for argyrophilic nucleolar organizing regions (AgNORs). Based on both Kiupel’s and Patnaik’s systems, no statistically significant differences were noted concerning the number of cases with grading discrepancies in grades allocated prior to versus after surgery among the groups. The same applied for cytological grading and immunohistochemical and histochemical evaluation. It seems that administration of morphine or butorphanol as part of the preanesthetic medication for surgical removal of canine cutaneous mast cell tumors does not influence histopathologic and cytologic grading of MCTs.
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Ádám D, Arany J, Tóth KF, Tóth BI, Szöllősi AG, Oláh A. Opioidergic Signaling-A Neglected, Yet Potentially Important Player in Atopic Dermatitis. Int J Mol Sci 2022; 23:4140. [PMID: 35456955 PMCID: PMC9027603 DOI: 10.3390/ijms23084140] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 03/30/2022] [Accepted: 03/31/2022] [Indexed: 02/04/2023] Open
Abstract
Atopic dermatitis (AD) is one of the most common skin diseases, the prevalence of which is especially high among children. Although our understanding about its pathogenesis has substantially grown in recent years, and hence, several novel therapeutic targets have been successfully exploited in the management of the disease, we still lack curative treatments for it. Thus, there is an unmet societal demand to identify further details of its pathogenesis to thereby pave the way for novel therapeutic approaches with favorable side effect profiles. It is commonly accepted that dysfunction of the complex cutaneous barrier plays a central role in the development of AD; therefore, the signaling pathways involved in the regulation of this quite complex process are likely to be involved in the pathogenesis of the disease and can provide novel, promising, yet unexplored therapeutic targets. Thus, in the current review, we aim to summarize the available potentially AD-relevant data regarding one such signaling pathway, namely cutaneous opioidergic signaling.
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Affiliation(s)
- Dorottya Ádám
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (D.Á.); (J.A.); (K.F.T.); (B.I.T.)
- Doctoral School of Molecular Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - József Arany
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (D.Á.); (J.A.); (K.F.T.); (B.I.T.)
- Doctoral School of Molecular Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Kinga Fanni Tóth
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (D.Á.); (J.A.); (K.F.T.); (B.I.T.)
- Doctoral School of Molecular Medicine, University of Debrecen, 4032 Debrecen, Hungary
| | - Balázs István Tóth
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (D.Á.); (J.A.); (K.F.T.); (B.I.T.)
| | - Attila Gábor Szöllősi
- Department of Immunology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary;
| | - Attila Oláh
- Department of Physiology, Faculty of Medicine, University of Debrecen, 4032 Debrecen, Hungary; (D.Á.); (J.A.); (K.F.T.); (B.I.T.)
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French AR, van Rijn RM. An updated assessment of the translational promise of G-protein-biased kappa opioid receptor agonists to treat pain and other indications without debilitating adverse effects. Pharmacol Res 2022; 177:106091. [PMID: 35101565 PMCID: PMC8923989 DOI: 10.1016/j.phrs.2022.106091] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 01/22/2023]
Abstract
Kappa opioid receptor (κOR) agonists lack the abuse liability and respiratory depression effects of clinically used mu opioid receptor (μOR) analgesics and are hypothesized to be safer alternatives. However, κOR agonists have limiting adverse effects of their own, including aversion, sedation, and mood effects, that have hampered their clinical translation. Studies performed over the last 15 years have suggested that these adverse effects could result from activation of distinct intracellular signaling pathways that are dependent on β-arrestin, whereas signaling downstream of G protein activation produces antinociception. This led to the hypothesis that agonists biased away from β-arrestin signaling would have improved therapeutic windows over traditional unbiased agonists and allow for clinical development of analgesic G-protein-biased κOR agonists. Given a recent controversy regarding the benefits of G-protein-biased μOR agonists, it is timely to reassess the therapeutic promise of G-protein-biased κOR agonists. Here we review recent discoveries from preclinical κOR studies and critically evaluate the therapeutic windows of G-protein-biased κOR agonists in each of the adverse effects above. Overall, we find that G-protein-biased κOR agonists generally have improved therapeutic window relative to unbiased agonists, although frequently study design limits strong conclusions in this regard. However, a steady flow of newly developed biased κOR agonists paired with recently engineered behavioral and molecular tools puts the κOR field in a prime position to make major advances in our understanding of κOR function and fulfill the promise of translating a new generation of biased κOR agonists to the clinic.
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Affiliation(s)
- Alexander R French
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA; Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA
| | - Richard M van Rijn
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN 47907, USA; Purdue Institute for Integrative Neuroscience, Purdue University, West Lafayette, IN 47907, USA; Purdue Institute for Drug Discovery, Purdue University, West Lafayette, IN 47907, USA.
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11
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Marsella R, Ahrens K, Wilkes R, Soeberdt M, Abels C. Topical κ-opioid receptor agonist asimadoline improves dermatitis in a canine model of atopic dermatitis. Exp Dermatol 2021; 31:628-632. [PMID: 34839557 DOI: 10.1111/exd.14507] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 11/16/2021] [Accepted: 11/25/2021] [Indexed: 11/30/2022]
Abstract
This prospective, 4-week, placebo-controlled, cross-over study aimed to investigate the efficacy of 1% topical κ-opioid agonist, asimadoline, in a model of canine atopic dermatitis (AD). Fourteen beagles were challenged with house dust mites every 3-4 days for a total of 9 challenges. Severity of dermatitis was assessed, and pruritus was monitored using GoPro HERO cameras. Pruritus scoring was evaluated at 10 time periods; baseline, 4 h post allergen challenge and the last day of the study on Day 28. Scoring was done blindly by personnel using BORIS software. A global subjective score was also given using a visual analogue scale (VAS). A 4-week washout period occurred and dogs were crossed-over, the study was repeated, and the results were analysed using combined data. Gel was applied once daily on inguinal area (0.6 ml/dog). ANOVA showed significant effect of time (p < 0.0001) and group (p = 0.0001) on dermatitis scores. Overall, no statistically significant effect on pruritus was found due to a crossing of scores on Day 17. Overtime the placebo scores increased while the active ingredient showed decrease after first 3 weeks. It is concluded that this approach is promising in dogs with AD and longer studies with more frequent application may be beneficial.
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Affiliation(s)
- Rosanna Marsella
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - Kim Ahrens
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | - Rachel Wilkes
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
| | | | - Christoph Abels
- Dr. August Wolff GmbH & Co. KG Arzneimittel, Bielefeld, Germany
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12
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Tang W, Luo L, Hu B, Zheng M. Butorphanol alleviates lipopolysaccharide-induced inflammation and apoptosis of cardiomyocytes via activation of the κ-opioid receptor. Exp Ther Med 2021; 22:1248. [PMID: 34539844 PMCID: PMC8438658 DOI: 10.3892/etm.2021.10683] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 04/16/2021] [Indexed: 12/25/2022] Open
Abstract
Sepsis-induced myocardial dysfunction is a leading cause of the high mortality rates associated with sepsis. The aim of the present study was to investigate the effect of butorphanol on sepsis-induced cardiomyocyte dysfunction. Lipopolysaccharide (LPS) was used to induce H9C2 cardiomyocytes to establish an in vitro sepsis model. The effect of butorphanol on the viability of LPS-induced H9C2 cells was analyzed using a Cell Counting Kit-8 assay. The levels of tumor necrosis factor-α, interleukin (IL)-1β and IL-6 were detected using ELISA. Western blotting was used to analyze the expression levels of inflammation-and apoptosis-related proteins. Cell apoptosis was measured using a TUNEL assay. The expression levels of κ-opioid receptor (KOR) were analyzed using reverse transcription-quantitative PCR analysis and western blotting. Following LPS induction, the levels of inflammatory cytokines and proapoptotic proteins were found to be upregulated in H9C2 cells, while butorphanol treatment downregulated these levels. The expression levels of KOR were also upregulated following butorphanol treatment in LPS-induced H9C2 cells. Addition of the KOR inhibitor, nor-binaltorphimine, alleviated the inhibitory effects of butorphanol on inflammation and apoptosis in LPS-induced H9C2 cells. In conclusion, the findings of the present study provided evidence indicating that butorphanol may alleviate LPS-induced inflammation and apoptosis in cardiomyocytes by upregulating KOR expression, which may provide a novel insight into the potential therapeutic effects of butorphanol and its underlying mechanism of action.
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Affiliation(s)
- Weiqing Tang
- Department of Anesthesiology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Liu Luo
- Department of Anesthesiology, The Affiliated Zhuzhou Hospital of Xiangya School of Medicine, Central South University, Zhuzhou Central Hospital, Zhuzhou, Hunan 412000, P.R. China
| | - Baoji Hu
- Department of Anesthesiology, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Mingzhi Zheng
- Department of Anesthesiology, The Affiliated Zhuzhou Hospital of Xiangya School of Medicine, Central South University, Zhuzhou Central Hospital, Zhuzhou, Hunan 412000, P.R. China
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