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Shuai Y, Xue Q, Tu H, Guo J, Teng Q, Xu Y, Xu J, Li Y, Zhou H, Zhao J. Multiplex LAMP assay for detecting the prevalent species of dust mites Dermatophagoides farinae and Dermatophagoides pteronyssinus in the domestic environment. Sci Rep 2024; 14:16156. [PMID: 38997337 PMCID: PMC11245516 DOI: 10.1038/s41598-024-66043-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024] Open
Abstract
Dermatophagoides farina (D. farinae) and Dermatophagoides pteronyssinus (D. pteronyssinus) are the prevalent kinds of house dust mites (HDMs). HDMs are common inhalant allergens that cause a range of allergic diseases, such as rhinitis, atopic dermatitis, and asthma. The epidemiology of these diseases is associated with exposure to mites. Therefore, in the present study, a method named multiplex loop-mediated isothermal amplification (LAMP) was developed to detect environmental dust mites. The multiplex LAMP assay allows amplification within a single tube and has an ITS plasmid detection limit as low as 40 fg/µL for both single dust mites and mixed dust mites (D. pteronyssinus and D. farinae), which is up to ten times more sensitive than classical PCR techniques. Furthermore, the multiplex LAMP method was applied to samples of single dust mites and clinical dust to confirm its validity. The multiplex LAMP assay exhibited higher sensitivity, simpler instrumentation, and visualization of test results, indicating that this method could be used as an alternative to traditional techniques for the detection of HDMs.
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Affiliation(s)
- Yujun Shuai
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Qiqi Xue
- Department of Laboratory Medicine, Third Affiliated Hospital of Naval Medical University, Shanghai, 200438, China
| | - Huanxin Tu
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Junjie Guo
- Department of Medical Parasitology, Qiqihaer Medical College, Qiqihaer, 161000, Heilongjiang, China
| | - Qiao Teng
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Yueye Xu
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Jingang Xu
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Yuanyuan Li
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Hongming Zhou
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China.
- Anhui Province Key Laboratory of Biological Macro-molecules Research, Wannan Medical College, Wuhu, 241002, Anhui, China.
| | - Jinhong Zhao
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China.
- Anhui Province Key Laboratory of Biological Macro-molecules Research, Wannan Medical College, Wuhu, 241002, Anhui, China.
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Hensel P, Saridomichelakis M, Eisenschenk M, Tamamoto-Mochizuki C, Pucheu-Haston C, Santoro D. Update on the role of genetic factors, environmental factors and allergens in canine atopic dermatitis. Vet Dermatol 2024; 35:15-24. [PMID: 37840229 DOI: 10.1111/vde.13210] [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: 12/19/2022] [Revised: 07/14/2023] [Accepted: 09/26/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND Canine atopic dermatitis (cAD) is a common, complex and multifactorial disease involving, among others, genetic predisposition, environmental factors and allergic sensitisation. OBJECTIVE This review summarises the current evidence on the role of genetic and environmental factors and allergic sensitisation in the pathogenesis of cAD since the last review by ICADA in 2015. MATERIALS AND METHODS Online citation databases and proceedings from international meetings on genetic factors, environmental factors and allergens relevant to cAD that had been published between 2015 and 2022 were reviewed. RESULTS Despite intensive research efforts, the detailed genetic background predisposing to cAD and the effect of a wide range of environmental factors still need more clarification. Genome-wide association studies and investigations on genetic biomarkers, such as microRNAs, have provided some new information. Environmental factors appear to play a major role. Lifestyle, especially during puppyhood, appears to have an important impact on the developing immune system. Factors such as growing up in a rural environment, large size of family, contact with other animals, and a nonprocessed meat-based diet may reduce the risk for subsequent development of cAD. It appears that Toxocara canis infection may have a protective effect against Dermatophagoides farinae-induced cAD. House dust mites (D. farinae and D. pteronyssinus) remain the most common allergen group to which atopic dogs react. Currently, the major allergens related to D. farinae in dogs include Der f 2, Der f 15, Der f 18 and Zen 1. CONCLUSIONS AND CLINICAL RELEVANCE Canine atopic dermatitis remains a complex, genetically heterogeneous disease that is influenced by multiple environmental factors. Further, well-designed studies are necessary to shed more light on the role of genetics, environmental factors and major allergens in the pathogenesis of cAD.
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Affiliation(s)
| | | | | | - Chie Tamamoto-Mochizuki
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina, USA
| | - Cherie Pucheu-Haston
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Louisiana State University, Baton Rouge, Louisiana, USA
| | - Domenico Santoro
- Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, USA
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Xue Q, Sheng L, Guo J, Zou M, Teng Q, Xu S, Li Y, Zhao J. Rapid visual detection of the allergen Dermatophagoides farinae in house dust by loop-mediated isothermal amplification. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:84674-84685. [PMID: 37368209 DOI: 10.1007/s11356-023-28398-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 06/19/2023] [Indexed: 06/28/2023]
Abstract
Dermatophagoides farinae is considered to be an important factor causing some allergic diseases, such as urticaria, allergic rhinitis, asthma, and other interrelated diseases. Avoiding exposure to allergens is the most effective way to reduce allergic reactions. In this study, we successfully established a loop-mediated isothermal amplification (LAMP) method for the detection of D. farinae DNA target internal transcribed spacer (ITS) and D. farinae 1 allergen (Der f 1) genes. The turbidity-monitoring system and visual fluorescent reagents were used to verify the test results of LAMP assay. Following optimization of the primers and reaction temperatures, the amplification sensitivity, specificity, and efficiency of the method for detecting D. farinae were assessed. There was no cross-reaction with other arthropod species that are commonly found in indoor environmental dust, such as Dermatophagoides pteronyssinus, Alophagoides ovatus, Periplaneta americana, Anopheles sinensis, and Musca domestica. Furthermore, the sensitivity of LAMP assay for detecting D. farinae DNA was 10 times greater than that of conventional PCR. The positive detection rate by the LAMP method was greater than the conventional PCR for both single D. farinae mites and D. farinae mites in indoor dust. A new type of LAMP method for D. farinae based on the Der f 1 and ITS genes was, therefore, successfully established. This study is the first time to detect the D. farinae allergen using LAMP assay. This assay could be useful as a model for the rapid detection of allergens produced by other house dust mites in the future.
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Affiliation(s)
- Qiqi Xue
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Lingwei Sheng
- Medical Laboratory Science, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Junjie Guo
- Department of Medical Parasitology, Qiqihaer Medical College, Qiqihaer, 161000, Heilongjiang, China
| | - Minghui Zou
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Qiao Teng
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Sijia Xu
- Medical Laboratory Science, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Yuanyuan Li
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China
| | - Jinhong Zhao
- Department of Medical Parasitology, Wannan Medical College, Wuhu, 241002, Anhui, China.
- Anhui Province Key Laboratory of Biological Macro-molecules Research, Wannan Medical College, Wuhu, 241002, Anhui, China.
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Xue Q, Zou M, Guo J, Teng Q, Zhang Q, Sheng L, Xu S, Fang C, Yao N, Li Y, Zhao J. Detection and assessment of dust mite allergens in an indoor environment in Anhui, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:3045-3055. [PMID: 35941504 PMCID: PMC9892137 DOI: 10.1007/s11356-022-22395-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/01/2022] [Indexed: 06/15/2023]
Abstract
Dust in the home environment is thought to be a potential trigger for increasing allergic diseases, such as allergic rash, rhinitis, asthma, and other conditions, associated with dust mites. To verify the status of dust mite prevalence in indoor surroundings, we collected 189 dust samples from the air conditioner filters (n = 75) and floors (n = 114) of households, schools, and hotels in the Anhui area, China. All samples were measured for dust mite breeding rate and breeding density under light microscopy and analyzed for dust mite species Dermatophagoides farinae 1 (Der f 1) and Dermatophagoides pteronyssinus 1 (Der p 1) allergen using enzyme-linked immunosorbent assay (ELISA). The dust mite breeding rates were 34.67% (26/75) and 20.18% (23/114), respectively, in the dust samples from the floor and air conditioning filters. The breeding density was the highest in households (10/g), followed by schools (9/g) and hotels (4/g). ELISA indicated that the allergen threshold (2.0 µg/g dust) of Der f 1 was exceeded in only two samples and Der p 1 in one sample. Additionally, a questionnaire was used to investigate the health knowledge on allergic diseases involved in indoor facilities, finding that most allergy sufferers were aware that indoor dust might be responsible for their conditions. The findings suggest that regular maintenance of indoor hygiene and cleaning of air-conditioning filters should reduce the risks of exposure to indoor allergens.
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Affiliation(s)
- Qiqi Xue
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Minghui Zou
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Junjie Guo
- Department of Medical Parasitology, Qiqihar Medical College, QiqiharHeilongjiang, 161000, China
| | - Qiao Teng
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Qiqi Zhang
- School of Clinical Medicine, Wannan Medical College, WuhuAnhui, 241002, China
| | - Lingwei Sheng
- Medical Laboratory Science, Wannan Medical College, WuhuAnhui, 241002, China
| | - Sijia Xu
- Medical Laboratory Science, Wannan Medical College, WuhuAnhui, 241002, China
| | - Can Fang
- School of Public Health, Wannan Medical College, WuhuAnhui, 241002, China
| | - Ning Yao
- School of Public Health, Wannan Medical College, WuhuAnhui, 241002, China
| | - Yuanyuan Li
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China
| | - Jinhong Zhao
- Department of Medical Parasitology, Wannan Medical College, WuhuAnhui, 241002, China.
- Anhui Province Key Laboratory of Biological Macromlecules Research, Wannan Medical College, WuhuAnhui, 241002, China.
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Adam GO, Park YG, Cho JH, Choi J, Oh HG. Detecting common allergens in dogs with atopic dermatitis in South Korean Provinces using a serological immunoglobulin E-specific allergen test. Vet World 2022; 15:1996-2003. [PMID: 36313853 PMCID: PMC9615500 DOI: 10.14202/vetworld.2022.1996-2003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 07/07/2022] [Indexed: 11/16/2022] Open
Abstract
Background and Aim: Canine atopic dermatitis (CAD) is a hereditary susceptibility to the development of allergic symptoms in response to repeated exposure to generally innocuous substances known as “allergens.” Allergens can be plants, animals, mold, mites, or milk. At present, serological enzyme-linked immunoassay (ELISA) kits are used for immunoglobulin E (IgE)-specific allergen detection due to their simplicity and accuracy. This study aimed to detect allergens in dogs with CAD and determine how they differ according to season, breed, age, and sex using a serological test in six provinces in South Korea for 12 months. This will allow practitioners to easily understand the risk factors related to CAD. Materials and Methods: In this study, IgE allergen-specific ELISA kits were used. The allergens were detected in serum samples collected from different regions considering season, sex, breed, and age. Allergens were divided into the following Ten categories: 1. Dairy, yeast, and egg, 2. grains, 3. vegetables, 4. meat, 5. seafood, 6. animals, 7. mold, 8. insects, 9. mites, and 10. trees. Results: The percentage of allergens detected in males (54.8%) was higher than that of females (45.2%); 54.2% of allergens occurred in 3-year-old dogs or older. Moreover, regarding frequency, 65.6% of overall allergens occur during autumn; Chungcheongnam-do and Jeollabuk-do showed 20.7% and 20.9%, respectively. Additionally, among allergens categories, notable allergen occurrence was as follows: 38.3% corn; 28.7% potatoes; 22.7% duck; 24.4%,codfish; 31.2% animal wool; 95.6% Aspergillus fumigatus; 31.9% flea; 41.8% oak; and 25.0% sheep’s sorrel grass. Conclusion: This study showcases the frequency of 60 allergens in six provinces detected in dogs with CAD; most likely from food or the environment using serological ELISA kits. Environmental sensitizer results can be considered for humans suffering from allergies to avoid a similar environment. A large-scale study can be performed to evaluate the allergens in the state. However, neither a skin test nor feed analysis was conducted, which is a limitation of this study.
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Affiliation(s)
- Gareeballah Osman Adam
- Department of Veterinary Medicine and Surgery, College of Veterinary Medicine, Sudan University of Science and Technology, Hilat Kuku, Khartoum 11311, Sudan; Integrated Omics Institute, Wonkwang University, Iksan, Jeonbuk 54538, Korea
| | - Yang-Gyu Park
- Allergy Test Service Center, HUVET Co. Ltd., Iksan-si 54531, Korea
| | - Jeong-Hwi Cho
- Allergy Test Service Center, HUVET Co. Ltd., Iksan-si 54531, Korea
| | - Jinyoung Choi
- Allergy Test Service Center, HUVET Co. Ltd., Iksan-si 54531, Korea
| | - Hong-Geun Oh
- Allergy Test Service Center, HUVET Co. Ltd., Iksan-si 54531, Korea
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