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Zhou Y, Zhu X, Ren Y, Hui Y. Distribution of Cheyletus mites in dust samples. THE EUROPEAN ZOOLOGICAL JOURNAL 2022. [DOI: 10.1080/24750263.2022.2126533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- Y. Zhou
- Department of Pediatrics Laboratory, The Affiliated Wuxi Children’s Hospital of Nanjing Medical University, China
| | - X. Zhu
- Department of Clinical Laboratory, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, China
| | - Y. Ren
- Clinical Research Center, The Affiliated Wuxi People’s Hospital of Nanjing Medical University, China
| | - Y. Hui
- Department of Respiratory, The Affiliated Wuxi Children’s Hospital of Nanjing Medical University, China
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Gad A, Saleh A, Farhat HI, Dawood YH, Abd El Bakey SM. Spatial Distribution, Contamination Levels, and Health Risk Assessment of Potentially Toxic Elements in Household Dust in Cairo City, Egypt. TOXICS 2022; 10:toxics10080466. [PMID: 36006146 PMCID: PMC9414935 DOI: 10.3390/toxics10080466] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 05/17/2023]
Abstract
Urban areas’ pollution, which is owing to rapid urbanization and industrialization, is one of the most critical issues in densely populated cities such as Cairo. The concentrations and the spatial distribution of fourteen potentially toxic elements (PTEs) in household dust were investigated in Cairo City, Egypt. PTE exposure and human health risk were assessed using the USEPA’s exposure model and guidelines. The levels of As, Cd, Cr, Cu, Hg, Mo, Ni, Pb, and Zn surpassed the background values. Contamination factor index revealed that contamination levels are in the sequence Cd > Hg > Zn > Pb > Cu > As > Mo > Ni > Cr > Co > V > Mn > Fe > Al. The degree of contamination ranges from considerably to very high pollution. Elevated PTE concentrations in Cairo’s household dust may be due to heavy traffic emissions and industrial activities. The calculated noncarcinogenic risk for adults falls within the safe limit, while those for children exceed that limit in some sites. Cairo residents are at cancer risk owing to prolonged exposure to the indoor dust in their homes. A quick and targeted plan must be implemented to mitigate these risks.
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Affiliation(s)
- Ahmed Gad
- Geology Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
- Correspondence: (A.G.); (A.S.)
| | - Ahmed Saleh
- National Research Institute of Astronomy and Geophysics (NRIAG), Cairo 11421, Egypt
- Correspondence: (A.G.); (A.S.)
| | - Hassan I. Farhat
- Geology Department, Faculty of Science, Suez University, El Salam City 43518, Egypt
| | - Yehia H. Dawood
- Geology Department, Faculty of Science, Ain Shams University, Cairo 11566, Egypt
| | - Sahar M. Abd El Bakey
- Department of Biological and Geological Sciences, Faculty of Education, Ain Shams University, Cairo 11341, Egypt
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Solarz K, Obuchowicz A, Asman M, Nowak W, Witecka J, Pietrzak J, Marek M, Łonak A, Stadnicka I, Hajduga-Staśko B. Abundance of domestic mites in dwellings of children and adolescents with asthma in relation to environmental factors and allergy symptoms. Sci Rep 2021; 11:18453. [PMID: 34531458 PMCID: PMC8446054 DOI: 10.1038/s41598-021-97936-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 08/20/2021] [Indexed: 11/19/2022] Open
Abstract
Exposure to house dust allergens, mainly from domestic mites, is an important cause of allergic reactions in sensitized asthmatic patients. A total of 63 dust samples were collected from 16 flats in Bytom (south Poland); in each flat a person (age 4-17 years) suffering from bronchial asthma lived with his/her family. Mite density was calculated as the number of specimens per g of dust. The results were compared with household features and the data were statistically analyzed. In total 566 mite specimens were isolated, including 526 members of the family Pyroglyphidae (93%). The dominant species were Dermatophagoides pteronyssinus (60% of the total count) and Dermatophagoides farinae (32%). Pyroglyphids were found in all mite positive samples (68%) of which 35% also contained non-pyroglyphids, including glycyphagids, cheyletids and gamasids. The results suggest associations between the density of some mite taxa (per g of dust) and the following indoor environmental factors: presence of pets, number of inhabitants, coal-stoves as a type of heating, cleaning frequency, higher relative humidity, presence of flowers and PVC windows. The severity of asthma seems to be associated with the numbers of D. farinae, total domestic mites and live mites per g of dust.
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Affiliation(s)
- Krzysztof Solarz
- Department of Parasitology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Katowice, Poland
| | - Anna Obuchowicz
- Department of Pediatrics in Bytom, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Marek Asman
- Department of Parasitology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Katowice, Poland.
| | - Wacław Nowak
- Department of Pediatrics in Bytom, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Joanna Witecka
- Department of Parasitology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Katowice, Poland
| | - Jolanta Pietrzak
- Department of Pediatrics in Bytom, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Marta Marek
- Department of Pediatrics in Bytom, Faculty of Health Sciences in Katowice, Medical University of Silesia in Katowice, Katowice, Poland
| | - Aldona Łonak
- Department of Parasitology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Katowice, Poland
| | - Izabela Stadnicka
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Katowice, Poland
| | - Bernadeta Hajduga-Staśko
- Department of Parasitology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia in Katowice, Katowice, Poland
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