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Marsella R. Atopic Dermatitis in Domestic Animals: What Our Current Understanding Is and How This Applies to Clinical Practice. Vet Sci 2021; 8:124. [PMID: 34357916 DOI: 10.3390/vetsci8070124] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/25/2021] [Accepted: 06/26/2021] [Indexed: 12/18/2022] Open
Abstract
Atopic dermatitis is a clinical syndrome that affects both people and animals. Dogs closely mimic the complexity of the human skin disease, and much progress has been made in recent years in terms of our understanding of the role of skin impairment and the identification of new treatments. Cats and horses also develop atopic syndromes which include both cutaneous and respiratory signs, yet studies in these species are lagging. It is now recognized that atopic dermatitis is not a single disease but a multifaceted clinical syndrome with different pathways in various subgroups of patients. Appreciating this complexity is clinically relevant as we develop more targeted treatments which may work well in some patients but not in others. Different phenotypes of atopic dermatitis have been described in dogs, and it is possible that phenotypes related to breed and age may exist in other animals similar to how they are described in people. The awareness of different mechanisms of disease leads to the desire to correlate different phenotypes with specific biomarkers and responses to treatment. In this review, the current understanding and updated information on atopic syndrome in animals are described, highlighting opportunities for further studies in the future.
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Noli C, Della Valle MF, Miolo A, Medori C, Schievano C. Effect of dietary supplementation with ultramicronized palmitoylethanolamide in maintaining remission in cats with nonflea hypersensitivity dermatitis: a double-blind, multicentre, randomized, placebo-controlled study. Vet Dermatol 2019; 30:387-e117. [PMID: 31237065 PMCID: PMC6852539 DOI: 10.1111/vde.12764] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/06/2019] [Indexed: 12/12/2022]
Abstract
Background Feline nonflea hypersensitivity dermatitis (NFHD) is a frequent cause of over‐grooming, scratching and skin lesions. Multimodal therapy often is necessary. Hypothesis/Objectives To investigate the efficacy of ultramicronized palmitoylethanolamide (PEA‐um) in maintaining methylprednisolone‐induced remission in NFHD cats. Animals Fifty‐seven NFHD cats with nonseasonal pruritus were enrolled originally, of which 25 completed all study requirements to be eligible for analysis. Methods and materials Cats were randomly assigned to PEA‐um (15 mg/kg per os, once daily; n = 29) or placebo (n = 28) while receiving a 28 day tapering methylprednisolone course. Cats responding favourably to methylprednisolone were then administered only PEA‐um (n = 21) or placebo (n = 23) for another eight weeks, followed by a four week long treatment‐free period. Cats were maintained in the study until relapse or study end, whichever came first. Primary outcome was time to relapse. Secondary outcomes were pruritus Visual Analog Scale (pVAS), SCORing Feline Allergic Dermatitis scale (SCORFAD) and owner Global Assessment Score (GAS). Results Mean relapse time was 40.5 days (±7.8 SE) in PEA‐um treated cats (n = 13) and 22.2 days (±3.7 SE) for placebo (n = 12; P = 0.04). On Day 28, the severity of pruritus was lower in the PEA‐um treated cats compared to placebo (P = 0.03). Mean worsening of pruritus at the final study day was lower in the PEA‐um group compared to placebo (P = 0.04), whereas SCORFAD was not different between groups. Mean owner GAS at the final study day was better in the PEA‐um than the placebo‐treated group (P = 0.05). Conclusion and clinical importance Ultramicronized palmitoylethanolamide could represent an effective and safe option to delay relapse in NFHD cats.
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Affiliation(s)
- Chiara Noli
- Servizi Dermatologici Veterinari, Strada Bedale della Ressia 2, 12016, Peveragno, CN, Italy
| | | | - Alda Miolo
- Science Information and Documentation Centre, Innovet Italia Srl, Via Egadi 7, 20144, Milano, Italy
| | - Cristina Medori
- Science Information and Documentation Centre, Innovet Italia Srl, Via Egadi 7, 20144, Milano, Italy
| | - Carlo Schievano
- Innovative Statistical Research SRL, Prato della Valle 24, 35123, Padova, Italy
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Marsella R, De Benedetto A. Atopic Dermatitis in Animals and People: An Update and Comparative Review. Vet Sci 2017; 4:vetsci4030037. [PMID: 29056696 PMCID: PMC5644664 DOI: 10.3390/vetsci4030037] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/20/2017] [Accepted: 07/22/2017] [Indexed: 12/13/2022] Open
Abstract
Atopic dermatitis is an extremely common, pruritic, and frustrating disease to treat in both people and animals. Atopic dermatitis is multifactorial and results from complex interactions between genetic and environmental factors. Much progress has been done in recent years in terms of understanding the complex pathogenesis of this clinical syndrome and the identification of new treatments. As we learn more about it, we appreciate the striking similarities that exist in the clinical manifestations of this disease across species. Both in animals and people, atopic disease is becoming increasingly common and important similarities exist in terms of immunologic aberrations and the propensity for allergic sensitization. The purpose of this review is to highlight the most recent views on atopic dermatitis in both domestic species and in people emphasizing the similarities and the differences. A comparative approach can be beneficial in understanding the natural course of this disease and the variable response to existing therapies.
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Affiliation(s)
- Rosanna Marsella
- Department of Dermatology, College of Medicine, University of Florida, 4037 NW 86 Terrace, Gainesville, FL 32606, USA.
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, 2015 SW 16th Avenue, Gainesville, FL 32610, USA.
| | - Anna De Benedetto
- Department of Dermatology, College of Medicine, University of Florida, 4037 NW 86 Terrace, Gainesville, FL 32606, USA.
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Meason-Smith C, Diesel A, Patterson AP, Older CE, Johnson TJ, Mansell JM, Suchodolski JS, Rodrigues Hoffmann A. Characterization of the cutaneous mycobiota in healthy and allergic cats using next generation sequencing. Vet Dermatol 2016; 28:71-e17. [PMID: 27553477 DOI: 10.1111/vde.12373] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 02/03/2023]
Abstract
BACKGROUND Next generation sequencing (NGS) studies have demonstrated a diverse skin-associated microbiota and microbial dysbiosis associated with atopic dermatitis in people and in dogs. The skin of cats has yet to be investigated using NGS techniques. HYPOTHESIS/OBJECTIVES We hypothesized that the fungal microbiota of healthy feline skin would be similar to that of dogs, with a predominance of environmental fungi, and that fungal dysbiosis would be present on the skin of allergic cats. ANIMALS Eleven healthy cats and nine cats diagnosed with one or more cutaneous hypersensitivity disorders, including flea bite, food-induced and nonflea nonfood-induced hypersensitivity. METHODS Healthy cats were sampled at twelve body sites and allergic cats at six sites. DNA was isolated and Illumina sequencing was performed targeting the internal transcribed spacer region of fungi. Sequences were processed using the bioinformatics software QIIME. RESULTS The most abundant fungal sequences from the skin of all cats were classified as Cladosporium and Alternaria. The mucosal sites, including nostril, conjunctiva and reproductive tracts, had the fewest number of fungi, whereas the pre-aural space had the most. Allergic feline skin had significantly greater amounts of Agaricomycetes and Sordariomycetes, and significantly less Epicoccum compared to healthy feline skin. CONCLUSIONS The skin of healthy cats appears to have a more diverse fungal microbiota compared to previous studies, and a fungal dysbiosis is noted in the skin of allergic cats. Future studies assessing the temporal stability of the skin microbiota in cats will be useful in determining whether the microbiota sequenced using NGS are colonizers or transient microbes.
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Affiliation(s)
- Courtney Meason-Smith
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
| | - Alison Diesel
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
| | - Adam P Patterson
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
| | - Caitlin E Older
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
| | - Timothy J Johnson
- Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, 1971 Commonwealth Avenue, 205 Veterinary Science, Saint Paul, MN, 55108, USA
| | - Joanne M Mansell
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
| | - Jan S Suchodolski
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
| | - Aline Rodrigues Hoffmann
- Department of Veterinary Pathobiology, College of Veterinary Medicine, Texas A&M University, 4467 TAMU, College Station, TX, 77843, USA
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Bieber T. Insights into immunoglobulin E-mediated late-phase reactions in dogs. Vet Dermatol 2014; 25:305-6. [PMID: 25124176 DOI: 10.1111/vde.12172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas Bieber
- Department of Dermatology and Allergy, Rheinische Friedrich-Wilhelms-University Bonn, Bonn, Germany.
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