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Sivill S, Iborra S, Cantillo JF. Efficient experimental method for purifying allergens from aqueous extracts. Methods 2024; 229:63-70. [PMID: 38917960 DOI: 10.1016/j.ymeth.2024.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 06/27/2024] Open
Abstract
Studying the molecular and immunological basis of allergic diseases often requires purified native allergens. The methodologies for protein purification are usually difficult and may not be completely successful. The objective of this work was to describe a methodology to purify allergens from their natural source, while maintaining their native form. The purification strategy consists of a three-step protocol and was used for purifying five specific allergens, Ole e 1, Amb a 1, Alt a 1, Bet v 1 and Cup a 1. Total proteins were extracted in PBS (pH 7.2). Then, the target allergens were pre-purified and enriched by salting-out using increasing concentrations of ammonium sulfate. The allergens were further purified by anion exchange chromatography. Purification of Amb a 1 required an extra step of cation exchange chromatography. The detection of the allergens in the fractions obtained were screened by SDS-PAGE, and Western blot when needed. Further characterization of purified Amb a 1 was performed by mass spectrometry. Ole e 1, Alt a 1, Bet v 1 and Cup a 1 were obtained at > 90 % purity. Amb a 1 was obtained at > 85 % purity. Overall, we propose an easy-to-perform purification approach that allows obtaining highly pure allergens. Since it does not involve neither chaotropic nor organic reagents, we anticipate that the structural and biological functions of the purified molecule remain intact. This method provides a basis for native allergen purification that can be tailored according to specific needs.
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Affiliation(s)
- S Sivill
- R&D, Inmunotek, Alcalá de Henares, Madrid, Spain
| | - S Iborra
- R&D, Inmunotek, Alcalá de Henares, Madrid, Spain
| | - J F Cantillo
- R&D, Inmunotek, Alcalá de Henares, Madrid, Spain.
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Rio P, Caldarelli M, Gasbarrini A, Gambassi G, Cianci R. The Impact of Climate Change on Immunity and Gut Microbiota in the Development of Disease. Diseases 2024; 12:118. [PMID: 38920550 PMCID: PMC11202752 DOI: 10.3390/diseases12060118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2024] [Revised: 05/29/2024] [Accepted: 05/31/2024] [Indexed: 06/27/2024] Open
Abstract
According to the definition provided by the United Nations, "climate change" describes the persistent alterations in temperatures and weather trends. These alterations may arise naturally, such as fluctuations in the solar cycle. Nonetheless, since the 19th century, human activities have emerged as the primary agent for climate change, primarily attributed to the combustion of fossil fuels such as coal, oil, and gas. Climate change can potentially influence the well-being, agricultural production, housing, safety, and employment opportunities for all individuals. The immune system is an important interface through which global climate change affects human health. Extreme heat, weather events and environmental pollutants could impair both innate and adaptive immune responses, promoting inflammation and genomic instability, and increasing the risk of autoimmune and chronic inflammatory diseases. Moreover, climate change has an impact on both soil and gut microbiome composition, which can further explain changes in human health outcomes. This narrative review aims to explore the influence of climate change on human health and disease, focusing specifically on its effects on the immune system and gut microbiota. Understanding how these factors contribute to the development of physical and mental illness may allow for the design of strategies aimed at reducing the negative impact of climate and pollution on human health.
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Affiliation(s)
- Pierluigi Rio
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, 00168 Rome, Italy; (P.R.); (M.C.); (A.G.); (G.G.)
- Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 00168 Rome, Italy
| | - Mario Caldarelli
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, 00168 Rome, Italy; (P.R.); (M.C.); (A.G.); (G.G.)
- Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 00168 Rome, Italy
| | - Antonio Gasbarrini
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, 00168 Rome, Italy; (P.R.); (M.C.); (A.G.); (G.G.)
- Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 00168 Rome, Italy
| | - Giovanni Gambassi
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, 00168 Rome, Italy; (P.R.); (M.C.); (A.G.); (G.G.)
- Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 00168 Rome, Italy
| | - Rossella Cianci
- Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, 00168 Rome, Italy; (P.R.); (M.C.); (A.G.); (G.G.)
- Fondazione Policlinico Universitario A. Gemelli, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS), 00168 Rome, Italy
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Rosario CS, Urrutia-Pereira M, Murrieta-Aguttes M, D’Amato G, Chong-Silva DC, Godoi RHM, Rosario Filho NA. Air pollution and rhinitis. FRONTIERS IN ALLERGY 2024; 5:1387525. [PMID: 38863567 PMCID: PMC11166029 DOI: 10.3389/falgy.2024.1387525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 05/15/2024] [Indexed: 06/13/2024] Open
Abstract
Rhinitis arises from either allergic or non-allergic inflammation of the nasal mucosa, characterized by the infiltration of inflammatory cells into the tissue and nasal secretions, along with structural alterations in the nasal mucosa. The pathways through which air pollution affects rhinitis may diverge from those affecting asthma. This article aims to review the effects of diverse air pollutants on the nose, the correlation of climate change and pollution, and how they aggravate the symptoms of patients with rhinitis.
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Affiliation(s)
| | | | | | - Gennaro D’Amato
- Division of Respiratory and Allergic Diseases, Department of Chest Diseases, High Speciality Hospital “A. Cardarelli”, Naples, Italy
- Medical School of Specialization in Respiratory Diseases, Federico II University of Naples, Naples, Italy
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Kim BE, Hui-Beckman JW, Nevid MZ, Goleva E, Leung DYM. Air pollutants contribute to epithelial barrier dysfunction and allergic diseases. Ann Allergy Asthma Immunol 2024; 132:433-439. [PMID: 38006973 DOI: 10.1016/j.anai.2023.11.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/15/2023] [Accepted: 11/15/2023] [Indexed: 11/27/2023]
Abstract
Air pollution is a global problem associated with various health conditions, causing elevated rates of morbidity and mortality. Major sources of air pollutants include industrial emissions, traffic-related pollutants, and household biomass combustion, in addition to indoor pollutants from chemicals and tobacco. Various types of air pollutants originate from both human activities and natural sources. These include particulate matter, pollen, greenhouse gases, and other harmful gases. Air pollution is linked to allergic diseases, including atopic dermatitis, allergic rhinitis, allergic conjunctivitis, food allergy, and bronchial asthma. These pollutants lead to epithelial barrier dysfunction, dysbiosis, and immune dysregulation. In addition, climate change and global warming may contribute to the exacerbation and the development of allergic diseases related to air pollutants. Epigenetic changes associated with air pollutants have also been connected to the onset of allergic diseases. Furthermore, these changes can be passed down through subsequent generations, causing a higher prevalence of allergic diseases in offspring. Modulation of the aryl hydrocarbon receptor could be a valuable strategy for alleviating air pollutant-induced epidermal barrier dysfunction and atopic dermatitis. A more effective approach to preventing allergic diseases triggered by air pollutants is to reduce exposure to them. Implementing public policies aimed at safeguarding individuals from air pollutant exposure may prove to be the most efficient solution. A pressing need exists for global policy initiatives that prioritize efforts to reduce the production of air pollutants.
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Affiliation(s)
- Byung Eui Kim
- Department of Pediatrics, National Jewish Health, Denver, Colorado
| | | | | | - Elena Goleva
- Department of Pediatrics, National Jewish Health, Denver, Colorado
| | - Donald Y M Leung
- Department of Pediatrics, National Jewish Health, Denver, Colorado.
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Sung M, Leung DYM, Kim BE. How does pollution worsen allergies? Ann Allergy Asthma Immunol 2024; 132:407-408. [PMID: 38569749 DOI: 10.1016/j.anai.2024.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 02/07/2024] [Accepted: 02/07/2024] [Indexed: 04/05/2024]
Affiliation(s)
- Myongsoon Sung
- Department of Pediatrics, National Jewish Health, Denver, Colorado; Department of Pediatrics, Soonchunhyang University Gumi Hospital, Gumi, Republic of Korea
| | - Donald Y M Leung
- Department of Pediatrics, National Jewish Health, Denver, Colorado.
| | - Byung Eui Kim
- Department of Pediatrics, National Jewish Health, Denver, Colorado
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Stukus DR. What the practicing allergist can and should do regarding climate change. Ann Allergy Asthma Immunol 2023; 131:679-680. [PMID: 38044014 DOI: 10.1016/j.anai.2023.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/21/2023] [Accepted: 07/21/2023] [Indexed: 12/05/2023]
Affiliation(s)
- David R Stukus
- Section of Allergy and Immunology, Department of Pediatrics, Nationwide Children's Hospital and The Ohio State University College of Medicine, Columbus, Ohio.
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