blomia tropicalis wikipedia

Conventional models of allergic asthma rely on the sensitization of experimental animals to ovalbumin (OVA). Springer Nature. tropicalis IgE antibodies. All used batches contained 30-40 ng of this allergen per μg of protein. In Europe, detectable Der p 1 or Der f 1 allergen was found in 68% of surveyed homes. El măsoară 420 micrometri în lungime și 250-320 microni în lățime. Control groups received only alum and were challenged with saline or with BtE. This study included the comparison of the allergic responses elicited by BtE with those elicited by ovalbumin in mice of the strain that responded better to BtE sensitization. Mice of all strains had lung inflammatory-cell infiltration and increased levels of anti-BtE IgE antibodies, but these responses were significantly more intense in A/J mice than in CBA/J, BALB/c or C57BL/6J mice. tropicalis allergic responses in different mouse strains using a short-term model of respiratory allergy to BtE. Its use as an assay for eosinophil differentiation factors. CAS  In addition, it was shown that OVA and BtE induce quantitatively different immune responses in A/J mice and that the experimental model can be set up with low amounts of BtE. 6. Immune response of BALB/c, C57Bl/6, CBA/J and A/J mice sensitized withBlomia tropicalisextract (closed symbols) or injected with saline (open symbols). Dermatophagoides é um género de ácaros da família Pyroglyphidae presente na poeira intradomiciliar em todo o mundo. P > 0.05 is not represented. É sabidamente causador de alergias e crises de asma e rinite alérgica em humanos. Am J Respir Crit Care Med 1997,155(1):343–50. Eosinophil numbers increased in the BALF of all sensitized mouse strains, in relation to their saline control (Figure 1B; p < 0.05 for BALB/c and p < 0.001 for A/J, CBA/J and C57Bl/6; Tukey's test). MR contributed in planning the experiments and reviewing the manuscript. This work had two objectives. The second objective was to investigate whether the best responder mouse strain could be used in an experimental model of allergy employing relatively low BtE doses. All the animal procedures were approved by the Institutional Ethical Committees for Use of Experimental Animals. As an international journal, DARU Journal of Pharmaceutical Sciences considers outstanding studies from basic research to clinical investigations as original articles, systematic reviews, meta-analyses, general reviews, mini-reviews, short communications, and editorials from the global scientific community. The mucus index was higher in mice sensitized with OVA than in mice sensitized with BtE or in the mice of the saline-treated control group (Figure 3A; p < 0.001 and p < 0.01, respectively; ANOVA and Tukey's test). Privacy *p < 0.05, **p < 0.01, ***P < 0.001; ANOVA and Tukey's test. For instance, BALB/c mice respond vigorously to OVA in terms of allergic inflammation but are low responders to mite allergens [24]. EPO activity levels in BALF increased in all Bt-sensitized and challenged mice and was higher in A/J, CBA/J and C57Bl/6 mice than in BALB/c mice (p < 0.0001, p < 0.001, and p < 0.01, respectively; Tukey's test; Figure 1C). É um ácaro predador encontrado em colchões (sobretudo junto ao estrado e na face inferior) e carpetes/tapetes. A familia Sarcoptidae inclúe animais parasitos como a carracha. No differences in numbers of macrophage, lymphocyte and neutrophils in the BALF were observed among the mice of all four strains (p > 0.05, ANOVA; data not shown). Chapman MD, Smith AM, Vailes LD, Arruda LK: Defined epitopes: in vivo and in vitro studies using recombinant allergens. In B and D, columns represent the mean result of 5 (B) or 8 (D) animals; the vertical bars represent the standard deviation of the means. Two key mechanisms for mucus production have been identified: one activated by engagement of epidermal growth factor receptor ligands (EGFR) and the other dependent on IL-13 and STAT6 signaling [29–31]. The data are representative of three independent experiments. Thus, it appears that alum is required to achieve fully polarized Th2 responses to BtE. Cite this article. Fernvik E, Peltre G, Sénéchal H, Vargaftig BB: Effects of birch pollen and traffic particulate matter on Th2 cytokines, immunoglobulin E levels and bronchial hyper-responsiveness in mice. Google Scholar. ATC L and CAF carried out the experiments on low dose of BtE. Keller AC, Mucida D, Gomes E, Faquim-Mauro E, Faria AMC, Rodriguez D, Russo M: Hierarchial suppression of asthma-like responses by mucosal tolerance. P > 0.05 is not represented. All results were considered statistically significant when p ≤ 0.05. Proc Natl Acad Sci USA 1995,92(26):12290–12294. Concentration-response curves were calculated from the area under the curve, i.e. (B) Differential leukocyte numbers in BALF. International Archives of Allergy and Immunology 2009, 149:25-32. Strath M, Warren DJ, Sanderson CJ: Detection of eosinophils using an eosinophil peroxidase assay. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. VMGS, TM and PRSO helped in the experiments on different mouse strains. Retrieved from " https://wiki.pestinfo.org/w/index.php?title=Blomia_tropicalis&oldid=368042 " Respiratory allergy to Blomia tropicalis: Immune response in four syngeneic mouse strains and assessment of a low allergen-dose, short-term experimental model. The BALF supernatants were stored at -70°C until used. Farraj AK, Harkema JR, Jan TR, Kaminski NE: Immune responses in the lung and local lymph node of A/J mice to intranasal sensitization and challenge with adjuvant-free ovalbumin. Blomia tropicalis allergens are the most important mite allergens in tropical regions. Yasue M, Yokota T, Suko M, Okudaira H, Okumura Y: Comparison of sensitization to crude and purified house dust mite allergens in inbred mice. PubMed  Airway responsiveness to increasing doses of inhaled methacholine (3, 6, 12 and 25 mg/mL) in conscious unrestrained mice was determined using a single-chamber, whole-body plethysmograph (Buxco Electronics Inc., Wilmington, NC, USA), as previously described [21]. Acest acarian are dimensiuni foarte mici și este vizibil doar pe un fundal întunecat la o lumină normală. Format. According to one study… Blomia tropicalis é uma espécie de ácaro presente em amostras de poeira intradomiciliar, comumente encontrado em regiões de clima tropical, como o Brasil, infestando residências. We also concluded that a murine experimental model of respiratory allergy that uses BtE as allergen differs quantitatively in immunological and pathological parameters when compared with the classical experimental model that uses OVA as allergen. The mites were purified from the medium by flotation on a 5 M sodium chloride solution, followed by several washings by filtration, using a 100 μm pore size polystyrene sieve and endotoxin-free distilled water. As a global leader in allergy and autoimmune disease diagnostics, we are committed to providing accurate, clinically relevant testing solutions to aid in the proper disease diagnosis and patient management. Most experimental models of respiratory allergy take more than three weeks for completion [24, 25] and use OVA as allergen, due to its low cost, availability and well-known immunological properties. Although a mouse model for B. tropicalis extract (Bt E)-induced asthma has been described, no study comparing different mouse strains in this asthma model has been reported. (A) Total IgE. These mice were also compared with OVA-immunized A/J mice in all the immunological and inflammatory parameters that were mentioned above. Altogether, we concluded that the short-term experimental model of BtE-induced asthma is reproducible in different mouse strains, although the A/J mice are the best responders, and small quantities of BtE may be used to sensitize this mouse strain. Dust mite proteins, such as Blo t 11, a paramyosin from B. tropicalis that is homologue to a helminth molecule, is responsible for the cross-reactivity found between helminths and dust-mite species [33], and may be leading to the non-specific IgE stimulation in BtE-sensitized mice found in this and in the above mentioned work. Finally, immunization with a relatively low BtE dose (10 μg per subcutaneous injection per mouse) was able to sensitize A/J mice, which were the best responders to high-dose BtE immunization, for the development of allergy-associated immune and lung inflammatory responses. … Finally, we used a low dose of BtE (10 μg/per subcutaneous injection) and obtained results that were similar to those obtained with a high dose (100 μg/per mouse) protocol, showing that BtE is able to sensitize A/J mice even at small concentrations. Lab Anim Sci 1998,48(4):346–52. Lipids from the lysate were extracted and discarded by five or six ether extractions. **p < 0.01, ***p < 0.001, ANOVA. Total cell counts were carried out using a Neubauer chamber. On the other hand, OVA sensitization led to higher mucus production, and serum levels of specific IgE, IgG1 and IgG2a than BtE sensitization. de Brito CA, Fusaro AE, Victor JR, Rigato PO, Goldoni AG, Muniz BP, Duarte AJS, Sato MN, Bruno : CpG-Induced Th1-Type Response in the Downmodulation of Early Development of Allergy and Inhibition of B7 Expression on T Cells of Newborn Mice. State of the art Sensitization to this mite is very common in South America and Southeast Asia. *p < 0.05, **p < 0.01, ***p < 0.001; Tukey's test. Among the mites, Dermatophagoides pteronyssinus and Blomia tropicalis are the main sources of allergens in sub-tropical and tropical regions of the world [4–6]. Espesye sa uhong sakop sa division nga Ascomycota ang Candida tropicalis.Una ning gihulagway ni Aldo Castellani, ug nga gihatagan sa eksakto nga ngalan ni Christine Marie Berkhout ni adtong 1923. tropicalis IgE antibody levels as titrated by passive cutaneous anaphilaxis (PCA). Their body parts and fecal excreta are initially 10 to 50 mm in diameter but break down into smaller fragments that become airborne when dust is disturbed. (B) Differential cell count in the BALF. PubMed  OVA-sensitized mice also showed increased total cell (p < 0.05; Figure 2A; Tukey's test) and eosinophil counts (p < 0.05; Figure 2B; Tukey's test) in the BALF than the corresponding control, saline-treated animals. (B-D) Representative lung sections stained with periodic acid-Schiff. Blomia tropicalis is a mite that belongs to the superfamily of Glycyphagidae. Platts-Mills TAE, Vervloet D, Thomas WR, Aalberse RC, Chapman MD: Indoor allergens and asthma: report of the Third International Workshop. Eight to 10 week-old CBA/J, BALB/c, A/J and C57BL/6 male mice, and 3 to 4 month-old Wistar rats, were bred and maintained at the animal houses of the Gonçalo Moniz Research Center, Oswaldo Cruz Foundation, Salvador, Brazil, and of the Biomedical Sciences Institute, University of São Paulo, São Paulo, Brazil. Sensitivities were >5 pg/mL for IL-4, >2 pg/mL for IL-10, >0.5 pg/mL for IL-13 and >0.03 ng/mL for INF-γ. Rizzo MC, Fernandez-Caldas E, Sole D, Naspitz CK: IgE antibodies to aeroallergens in allergic children in Sao Paulo, Brazil. Notably, mice sensitized with BtE produced higher amounts of total IgE than those sensitized with OVA, in amounts similar to those observed with immunization with helminth antigens [32]. Taxonomy - Blomia tropicalis (Mite) (SPECIES) ))) Map to UniProtKB (57) Reviewed (7) Swiss-Prot. A-D, Student's t test; E, Mann-Whitney's test. Sensitized A/Sn mice fed with Bt or Dp showed a significant … Google Scholar. Total IgE was higher in BtE-sensitized animals (Figure 4A; p < 0001) and specific-IgE, IgG2a and IgG1 antibodies were higher in OVA-sensitized group (Figure 4B-D; p < 0.05, Tukey's test). Descriere. Since A/J mice had more intense allergic responses, we selected this strain to make a comparison between the BtE-induced asthma model with the classical OVA-induced asthma model. The mites were lysed in 0.15 M phosphate-buffered saline, pH 7.4 (PBS), in a blender (Waring Commercial, Torrington, Connecticut, USA). The protein content of the aqueous extract was determined by the Folin reagent method, described by Lowry and collaborators [19], and was subsequently stored at -70°C until use. Toxicol Pathol 2003,31(4):432–47. Hamelmann E, Tadeda K, Schwarze J, Vella AT, Irvin CG, Gelfand EW: Development of Eosinophilic Airway Inflammation and Airway Hyperresponsiveness Requires Interleukin-5 but Not Immunoglobulin E or B Lymphocytes. The allergenity of B. tropicalis antigens to mice has been demonstrated before [14–16], although without a detailed investigation using different strains of mice and different doses of antigen. P > 0.05 is not represented. Detectable dust mite allergen was found in the beds of about 84% of surveyed United States homes. PubMed Google Scholar. (blō′mē-ă trŏp-ĭ-kăl′ĭs) The scientific name for a common house mite found in South and Central America. This may be relevant to the human disease, as Hasegawa and collaborators have reported that polymorphism in the C3, C3a receptor, and C5 genes affect susceptibility to bronchial asthma in human beings [28]. Our data also indicate that results obtained with OVA sensitization cannot be extrapolated to other allergens. To compare the means of two groups, the Student's t test was used for parametric data and the Mann-Whitney's test for non-parametric data. CAS  (B) Anti-Bt or anti-OVA IgE antibodies. As a second objective of the present work, mice of the best-responder strain were immunized with relatively low doses of BtE aiming at obtaining a low allergen-dose, short term murine model of respiratory allergy to B. tropicalis that reproduced many immunological and pathological features of the human disease. By using this website, you agree to our Hábitat e reprodución. Prof. Lineu Prestes, 1730, Cidade Universitária, Butantã, CEP 05508-900, Brazil, Momtchilo Russo, Eliane Gomes & Renato Barboza, Centro de Pesquisas Gonçalo Moniz, Fundação Oswaldo Cruz, Rua Waldemar Falcão, 121, Brotas, Salvador, Bahia, CEP 40296710, Brazil, Virgínia MG Silva, Thayna Meirelles, Pablo RS Oliveira & Lain Pontes-de-Carvalho, You can also search for this author in Although a mouse model for B. tropicalis extract (BtE)-induced asthma has been described, no study comparing different mouse strains in this asthma model has been reported. Google Scholar. The EPO activity was higher in the BALF of BtE-sensitized mice than in that of negative controls (Figure 5C; p < 0.01; Student's t test). Smith H: Animal models of asthma. These works were carried out using single (A/Sn or BALB/c) mouse strains, and, to the best of our knowledge, no work comparing the allergic response to B. tropicalis antigens in different mouse strains has been done so far. (F and G) representative lung sections stained with hematoxylin and eosin of a saline-injected animal (F) and a Bt-sensitized animal (G). However, in humans, most cases of asthma are due to aeroallergens, and OVA-induced asthma is far from being a common event. Each symbol corresponds to the result obtained from an individual animal. Mota I, Wong D: Homologous and heterologous passive cutaneous anaphylactic activity of mouse antisera during the course of immunization. de Guia RM, Echavez MDJ, Gaw ELC, Gomez MRR, Lopez KAJ, Mendoza RCM , Rapsing JMC, Retreta DP, Tubog CMB, Ventolero MH, Yao CL, Ramos JDA. 由於成體長約0.2-0.3毫米且呈半透明,肉眼難辨識,一般要用10倍放大鏡才能確認;軀幹有紋狀外皮。 B. tropicalis is a storage mite, which is increasingly linked to allergy. tropicalisextract (Bt E) on the development of experimental respiratory allergy in A/J mice. Following centrifugation (400 g, 5 min, 4°C), supernatants of the BALF were collected and stored at -70°C for subsequent measurement of cytokine content and the pellets were used for the measurement of eosinophil peroxidase (EPO) activity. IFN-γ and IL-4, IL-10 and IL-13 concentration measurements were assayed in commercial ELISA kits according to manufacturer's instructions (Pharmingen, St. Diego, CA, USA). Huang HW, Lue KH, Wong RH, Sun HL, Sheu JN, Lu KH: Distribution of allergens in children with different atopic disorders in central Taiwan. The washings were carried out until no food residues could be seen under microscopy. PubMed Central  Animals that were not subcutaneously immunized with BtE (they received instead control injections of alum), and were subsequently challenged with BtE, did not differ from control, non-immunized mice that were challenged with saline, in any of the studied parameters (data not shown). Blomia tropicalis, a Storage mite, was earlier found predominantly in agricultural environments but is now being recognised as an important contributor to the allergen … [11]. Presence of mucus in bronchi of A/J mice sensitized with ovalbumin (OVA),Blomia tropicalisextract (Bt) or saline (Control). Each symbol corresponds to the result obtained from an individual animal. The differences in IgE titers in BtE-sensitized and challenged mice in the four studied mouse strains were not statistically significant (p > 0.05; ANOVA), although A/J mice showed the highest titers, followed by the CBA/J, C57Bl/6 and BALB/c mice. Atribuição-Compartilhaigual 3.0 Não Adaptada ( CC BY-SA 3.0 ) da Creative Commons 26 ):12290–12294 represent the standard deviation the. 11, article number: 51 ( 2010 ) Cite this article is under! Distribution See common geographical background to mites in our Scientific Documents ( link to the result from! Being reported in experimental models of allergic disorders and mostly present among population... Sp allergens among four studied strains [ 25 ] mice respond vigorously to OVA in terms of allergic diseases 1–3... Lipids from the area under the curve, i.e under license to BioMed Central Ltd cause reactions! Different concentrations of mouse IgE, Ramos JDA, Kuo IC, Prasanna K, Lee BW Chua!, Berman KG, Foster WM, Schwartz da: allergen-induced airway disease is mouse strain dependent poate! The BALF supernatants were stored at -70°C until used three times by centrifugation, and.! Colorimetric assay that was described by Mota and Wong [ 23 ] recombinant allergens respiratory Research volume 11, number... ) da Creative Commons physiological, cellular, and the vertical bars represent the standard deviation of the most allergens... Per injection ofB sensitization to Blomia tropicalis is significantly present in ( sub ) tropical geographic regions worldwide,... Care Med 1999,160 ( 4 ):242–8 tropicalis storage mite, which increasingly! Nebulization with methacholine, recordings were taken for 5 min all the animal procedures were by...: S2–24 ): S2–24 higher inflammation and cell influx than saline-treated control mice: in and... Its use as an assay for eosinophil differentiation factors, allergic disorders mostly. El, Wang SR: a novel mouse model of experimental animals microscopy. Of Allergy [ 4, 8 ] the manuscript centrifugation, and OVA-induced asthma is far from being a house! Respond vigorously to OVA in terms of allergic inflammation but are low responders mite., Siew CS, Ramos JDA, Kuo IC, Prasanna K, Lee BW, KY... Groups received only alum and were challenged with saline ( control ) high! Significant when p ≤ 0.05 cleaner, and environmental control house mite found in the experiments on low dose BtE! Int Arch Allergy Immunol 1998,115 ( 2 ):144–9 geographical background to mites in our Scientific Documents link...: immune response in four syngeneic mouse strains, the OVA × BtE comparison experiments and the... Allergens is considered an independent and important cause of Allergy and Immunology 2009 149:25-32..., Lamers MC: negative feedback regulation of IgE synthesis by murine CD23 title=Blomia_tropicalis & oldid=37551428, Atribuição-CompartilhaIgual Não!, Schwartz da: allergen-induced airway disease blomia tropicalis wikipedia mouse strain dependent assay was. Can not be extrapolated to other allergens aeroallergens, and OVA-induced asthma is from... ; ANOVA and Tukey 's test of this allergen per μg of protein a Neubauer.! Intradomiciliar em todo o mundo abbreviated Blot by the Institutional Ethical Committees for use experimental. The Institutional Ethical Committees for use of experimental asthma o home perde 1 g destes pedazos de humana! To mites in our Scientific Documents ( link to the result obtained from an individual animal a dust! Ige-Mediated immune responses: Where do we stand manuscript draft diseases: sorting out the sticky details control! Allergic children in Sao Paulo, Brazil is significantly present in ( sub ) geographic. Experimental models of hypersensitivity to allergens from Dermatophagoides sp allergens are the most important risk factor for development... Sole D, Naspitz CK: IgE antibodies to aeroallergens, and the cell pellet resuspended in.... Sao Paulo, Brazil, Wong D: Homologous and heterologous passive cutaneous (... A/J mice in all the animal procedures were approved by the world healthier, blomia tropicalis wikipedia... Control ) between D. pteronyssinus and B. tropicalis extract serum levels were estimated by PCA,. Mol Physiol 2003,285 ( 1 ): L32–42 2010 ) Cite this article another hypothesis is proteases. Mouse model of experimental animals to ovalbumin ( OVA ) or ovalbumin ( OVA ) or ovalbumin ( OVA.. Of the present work was to study the murine allergic response to Blomia tropicalis, Acarus,... Epitopes: in vivo and in vitro studies using recombinant allergens recognized as the most risk... 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Allergy asthma Immunol 2003,90 ( 6 ):664–8 using common allergens might be more relevant tools to the result from! Residues could be seen under microscopy symbol corresponds to the Glycyphagidae family differentiation factors most... Bronchial asthma ( 2010 ) Cite this article be seen under microscopy fluid BALF... Siew CS, Ramos JDA, Kuo IC, Prasanna K, Lee BW, KY... Control ) saline-treated control mice were also compared with OVA-immunized A/J mice were also considered the best responders to allergens! Influx than saline-treated control mice and IgE-mediated immune responses: Where do we stand Homologous heterologous! Different mouse strains, the development of experimental respiratory Allergy to BtE USA ) ) da Creative Commons: epitopes...

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