Aerobiologia最新文献

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Characterization and health risk assessment of size-segregated fungal bioaerosols in and around a sugar mill in India 印度一家制糖厂及其周围大小分隔的真菌生物气溶胶的特征和健康风险评估
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-03-19 DOI: 10.1007/s10453-024-09812-2
Swati Tyagi, Arun Srivastava
{"title":"Characterization and health risk assessment of size-segregated fungal bioaerosols in and around a sugar mill in India","authors":"Swati Tyagi,&nbsp;Arun Srivastava","doi":"10.1007/s10453-024-09812-2","DOIUrl":"10.1007/s10453-024-09812-2","url":null,"abstract":"<div><p>Suspended particles of biological origin comprising of virus, fragments of plants and animals dander, pollen grains, fungal spores and bacteria known as bioaerosols have become a major concern in the past decades. In the present study reports, the concentration and size distribution of fungal bioaerosol in and around a sugar mill situated in the Muzaffarnagar region of Uttar Pradesh, India, are presented. The sampling was performed in the winter when the mill used to be in the operational mode. The highest mean fungal concentration was observed at the cutter site (4022 ± 321 cfu/m<sup>3</sup>) and lowest at storage site (832 ± 85 cfu/m<sup>3</sup>). The maximum and minimum concentration of fungal bioaerosol was observed during January (3090 ± 174 cfu/m<sup>3)</sup> and March (629 ± 69 cfu/m<sup>3</sup>) respectively. During the entire sampling period, the fine fraction of fungal bioaerosol was observed to be significantly higher at all the sites, whereas coarse fraction was lower. The association between fine and coarse fractions of bioaerosols showed a very strong positive relationship. The levels of fungal bioaerosol and their association with the meteorological parameters in sugar mill were also conducted. A positive association with the relative humidity and wind speed was observed at significance level of <i>p</i> &lt; 0.05, whereas a negative relation was observed with temperature at <i>p</i> &lt; 0.05. The lifetime average daily dose was calculated for both inhalation and dermal; among them LADD<sub>inhalation</sub> is ~ 5 times over LADD<sub>dermal</sub>. The health risk index was observed as &lt; 1 for both inhalation and dermal routes, whereas HI<sub>inhalation</sub> value was 10<sup>5</sup> times higher than the HI<sub>dermal</sub> value. The dominant fungi genera found in the air of examined dwellings were <i>Penicillium</i> spp., <i>Aspergillus</i> spp., <i>Cladosporium</i> spp., and <i>Alternaria</i> spp., which occurred predominantly at all of the studied sites during the sampling period.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"201 - 215"},"PeriodicalIF":2.2,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140204598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessing the impact of climatic factors on dengue fever transmission in Bangladesh 评估气候因素对孟加拉国登革热传播的影响
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-03-18 DOI: 10.1007/s10453-024-09814-0
Md. Mamun Miah, Mohammad Belal Hossain, Sumiya Nur Jannat, Md. Rezaul Karim, Md. Rashedur Rahman, Yasin Arafat, Farjana Haque Pingki
{"title":"Assessing the impact of climatic factors on dengue fever transmission in Bangladesh","authors":"Md. Mamun Miah,&nbsp;Mohammad Belal Hossain,&nbsp;Sumiya Nur Jannat,&nbsp;Md. Rezaul Karim,&nbsp;Md. Rashedur Rahman,&nbsp;Yasin Arafat,&nbsp;Farjana Haque Pingki","doi":"10.1007/s10453-024-09814-0","DOIUrl":"10.1007/s10453-024-09814-0","url":null,"abstract":"<div><p>Dengue fever is a virus-borne disease spread by mosquitos, and its global prevalence has risen significantly in recent years. The aim of this study was to analyze the impact and association of climatic factors on the spread of dengue incidence in Bangladesh. From January 2011 to December 2021, the study used secondary data on monthly dengue cases and the monthly average of climatic factors. In addition to the descriptive statistics, bivariate analyses of Kendall’s tau-b and Spearman’s rho have been performed for measuring the association of climatic factors on dengue infection. The generalized linear negative binomial regression model with and without lag was applied to evaluate the impacts of climatic factors on dengue transmission. Results of goodness of fit statistics <span>((AIC, BIC, and deviance))</span> showed that NBR model with one month lag best fitted to our data. The model findings revealed that temperature <span>((IRR:1.223, 95% CI:1.089-1.374))</span>, humidity <span>((IRR:1.131, 95% CI:1.103-1.159))</span>, precipitation <span>((IRR:1.158, 95% CI:1.072-1.253))</span>, and air pressure <span>((IRR:5.279, 95% CI:1.411-19.046))</span> were significantly positively influenced the spread of dengue incidence in Bangladesh. Additionally, dengue fever cases are anticipated to rise by 1.223, 1.131, 1.158, and 5.279 times, respectively, for the everyone-unit increase in the monthly average mean temperature, humidity, precipitation, and air pressure range. The findings on the epidemiological trends of the dengue epidemic and weather changes may interest policymakers and health officials.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"233 - 245"},"PeriodicalIF":2.2,"publicationDate":"2024-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140151414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterization and decontamination of deposited dust: a management regime at a museum 沉积尘埃的特征描述和净化:博物馆的管理制度
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-03-05 DOI: 10.1007/s10453-024-09813-1
A. A. Abdel Hameed, S. El-Gendy, Y. Saeed
{"title":"Characterization and decontamination of deposited dust: a management regime at a museum","authors":"A. A. Abdel Hameed,&nbsp;S. El-Gendy,&nbsp;Y. Saeed","doi":"10.1007/s10453-024-09813-1","DOIUrl":"10.1007/s10453-024-09813-1","url":null,"abstract":"<div><p>Deposited dust represents a nutritional niche for microflora. Inhibiting microflora-associated deposited dust is a critical approach to manage cultural heritage buildings. Knowledge on the effectiveness of commercial disinfection on microflora in a real field environment is limited. The present study aims to: (1) characterize deposited dust composition, and (2) assess the effectiveness of several commercial biocides/and an air ionizer on microflora-associated floor surface and air before and after treatment. Deposited dust was collected using a dust collector and microbial air sampling was conducted via a volumetric impactor sampler. Susceptibility of microorganisms to biocide/ionizer was performed in a naturally ventilated unoccupied room with a floor area of 18 m<sup>2</sup>. One-treatment protocol, a daily disinfection mode, was applied to each biocide/ionizer. The surface floor was adjacently sprayed by a biocide, and the ionizer was turned on for 30 min. Indoor deposited dust rates varied between 0.75 and 8.7 mg/m<sup>2</sup>/day with indoor/outdoor ratio of ~ 1:100. Ion concentrations of NH<sub>4</sub><sup>+</sup>, Cl<sup>−</sup>, SO<sub>4</sub><sup>2−</sup> and NO<sub>3</sub><sup>−</sup> were higher indoor than outdoor. The concentration of microorganisms-associated deposited dust averaged 10<sup>6</sup> CFU/g; 10<sup>5</sup> CFU/g and 10<sup>4</sup> CFU/g for bacteria, fungi and actinomycetes, respectively. A total of 23 fungal taxa were identified, with <i>Aspergillus flavus</i>, <i>Asp. fumigatus</i> and <i>Asp. niger</i> were the predominant taxa. Biocides quickly reduced floor surface and airborne microbial loads. The biocidal effect was time limited, as microflora loads increased again after ~ 4 days of the treatment protocol. Benzalkonium chloride (BAC) out-performed other biocides, showed a relatively permanent microbial inhibiting effect. The air ionizer reduced airborne microorganisms and increased surface floor ones. Characterizing of deposited dust (rate and composition) and choice an appropriate biocide may effectively reduce biodeterioration. Further real field treatment trials under various microenvironmental conditions are needed to determine the effectiveness of disinfection treatment.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"217 - 232"},"PeriodicalIF":2.2,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-024-09813-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140036113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The real hues of Red Rain-Kerala, India 红雨的真实色调--印度喀拉拉邦
IF 2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-02-28 DOI: 10.1007/s10453-024-09810-4
Merin Ann Ninan, Merin Grace Jiji, Thomas Ponnachen Valukattil, Harikumar Sadasivan Pillai Puthenveedu, Sabu Thomas, Binoy Thomas Thundiathu
{"title":"The real hues of Red Rain-Kerala, India","authors":"Merin Ann Ninan, Merin Grace Jiji, Thomas Ponnachen Valukattil, Harikumar Sadasivan Pillai Puthenveedu, Sabu Thomas, Binoy Thomas Thundiathu","doi":"10.1007/s10453-024-09810-4","DOIUrl":"https://doi.org/10.1007/s10453-024-09810-4","url":null,"abstract":"<p>This scientific article presents a comprehensive exploration of the intriguing ecological phenomenon known as \"red rain\", observed in the coastal town located at latitude N 11°.61108 and longitude E 75°.57383 in Kerala, India. The study aims to elucidate the origins, characteristics, and potential environmental implications associated with this phenomenon. Through a meticulous descriptive analysis, incorporating microscopic evaluation, DNA-sequencing, Fourier-transform infrared spectroscopy (FTIR), Gas Chromatography-Mass Spectrometry (GC–MS) analysis, and phylogenetic analysis, we deciphered the underlying factors responsible for the distinct red coloration observed in the rain. Our research findings highlight the presence of specific organic compounds, namely psi-psi Carotene 3,4 didehydro-1,2,7′8'-tetrahydro-1-methoxy-2-oxo and psi-psi and- Carotene 3,3',4,4'-tetradehydro1′2' dihydro 1-hydroxy-1'-methoxy in the algae, <i>Trentepohlia abietina</i>, as the primary contributors to the red color observed in the red rain. The research findings contribute to a deeper understanding of this distinctive occurrence and its implications for the local ecosystem in Kerala.</p>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"52 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140006585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Air pollution may alter reproductive dynamics/efficacy in plants: correlative evidences from an urban sprawl in Eastern Indo-Gangetic plain 空气污染可能会改变植物的繁殖动态/功效:印度洋-冈底斯平原东部城市扩张的相关证据
IF 2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-02-15 DOI: 10.1007/s10453-024-09811-3
Sujit Das, Chandan Barman, Anamika Roy, Mamun Mandal, Robert Popek, Arjun Adit, Abhijit Sarkar
{"title":"Air pollution may alter reproductive dynamics/efficacy in plants: correlative evidences from an urban sprawl in Eastern Indo-Gangetic plain","authors":"Sujit Das, Chandan Barman, Anamika Roy, Mamun Mandal, Robert Popek, Arjun Adit, Abhijit Sarkar","doi":"10.1007/s10453-024-09811-3","DOIUrl":"https://doi.org/10.1007/s10453-024-09811-3","url":null,"abstract":"<p>For urban ecosystem, the understanding of plant responses and behavioral pattern to prevailing stresses is critical. This study aims to evaluate the reproductive behavior of 40 roadside plants, including trees, shrubs, and herbs, to higher air pollution load for three successive years (i.e.—2017, 2018, and 2019) in an Indo-gangetic urban sprawl. The mean surface concentration of three gaseous pollutants (O<sub>3</sub>, NO<sub>2</sub>, and SO<sub>2</sub>) and one particulate matter with aerodynamic diameter ≤ 1 µm (PM<sub>1</sub>) was found to be highest at the polluted sites during all seasons. Though, there is no prescribed national standard for total atmospheric deposition; but, it was found significantly higher in all the seasons at the urban sites. According to obtained results, the natural pollen viabilities in all the plant species decreased to 10% significantly earlier at the urban sites. The seed numbers, weight, viability, and <i>in-vivo</i> germinations were also reduced significantly under higher air pollution load. The K-means cluster including all obtained data demonstrated a major group of 36 plants followed by two out groups of 2 plants each. Exceptionally, few plants, such as <i>M. indica, R. communis, S. sisymbrifolium, M. azedarach, H. indicum, J. gossypifolia, S. tora, A. indicum,</i> and <i>C. gigantea</i>, showed improved or unaffected responses in some of the reproductive parameters under higher air pollution load. Altogether, the obtained responses of all these plant species might be useful to understand the reproductive strategies, and can be utilized towards screening of effective species for sustainable urban green space development.</p>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"277 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bioaerosol exposure assessment of aquaculture workers in Korea 韩国水产养殖工人生物气溶胶暴露评估
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-02-11 DOI: 10.1007/s10453-024-09809-x
Woo-Je Lee, Ki-Youn Kim
{"title":"Bioaerosol exposure assessment of aquaculture workers in Korea","authors":"Woo-Je Lee,&nbsp;Ki-Youn Kim","doi":"10.1007/s10453-024-09809-x","DOIUrl":"10.1007/s10453-024-09809-x","url":null,"abstract":"<div><p>In aquaculture, biological hazards can be exposed to workers in the form of bioaerosols. This study is to evaluate the level of biological hazard exposure and to provide fundamental data for the health management of aquaculture workers in Korea. A field survey was conducted to measure bioaerosol exposure at ten aquaculture farms in areas where Korean aquaculture is concentrated. Airborne bacteria and fungi with size distribution and identification were measured by simultaneously monitoring temperature and relative humidity. Particularly, high concentrations of airborne bacteria and fungi were observed in farms G and H. Compared to the standards set by the Korean Ministry of Environment, both total airborne bacteria and fungi concentrations exceeded the limit in farms G and H, with the airborne fungi concentration showing four times higher than the standard. As a cause, it is believed to be the quantity and form of work. In size distribution, it was similar to previous study. However, the respirable size range accounted for more than 50% of total concentration, so extra caution should be needed. <i>Staphylococcus spp.</i>, <i>Micrococcus spp.</i>, <i>Corynebacterium spp.</i>, and <i>Bacillus spp.</i> are dominant species for airborne bacteria whereas <i>Cladosporium spp.</i>, <i>Penicillium spp.</i>, <i>Aspergillus spp.</i>, and <i>Alternaria spp.</i> are dominant species for airborne fungi. Most farms had concentrations below the standard, but two farms exceeded the standard, likely due to work type. And some caution is needed for respirable size bioaerosol. Further research is needed, considering additional factors such as tank type, fish species, and type of works.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"191 - 200"},"PeriodicalIF":2.2,"publicationDate":"2024-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Long-read sequencing of metagenomes from wet deposition samples in the Western USA during an elevated precipitation in February 2019 对 2019 年 2 月降水量增加期间美国西部湿沉积物样本中的元基因组进行长读数测序
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-02-07 DOI: 10.1007/s10453-024-09807-z
Samantha M. Waters, Sonali Verma, Nathan Cai, Joseph Varelas
{"title":"Long-read sequencing of metagenomes from wet deposition samples in the Western USA during an elevated precipitation in February 2019","authors":"Samantha M. Waters,&nbsp;Sonali Verma,&nbsp;Nathan Cai,&nbsp;Joseph Varelas","doi":"10.1007/s10453-024-09807-z","DOIUrl":"10.1007/s10453-024-09807-z","url":null,"abstract":"<div><p>During the month of February in 2019, the Western USA experienced elevated precipitation levels, corresponding to atmospheric river events, ending a drought period. Rainwater samples were collected at four time points across two weeks and analyzed by microscopy, analytical chemistry, and long-read sequencing methods. Quantification of whole cells showed concentrations of &gt; 10<sup>6</sup> cells/L. Imaged cells from fluorescent and scanning electron microscopy included microeukaryotes. Analytic chemistry detected Na<sup>+</sup> and Cl<sup>−</sup> ions, which were in agreement with back trajectories of an oceanic origin and atmospheric river occurrence. Taxonomic investigation of long-read sequences generated from the Nanopore MinION resulted in a high proportion of read assignments to fungal groups. For bacterial taxonomies, common rainwater-associated bacterial genera were present at higher proportions than other bacterial groups: <i>Erwinia</i>, <i>Hymenobacter</i>, <i>Pseudomonas,</i> and <i>Pantoea.</i> The microscopy data support the potential of intact and viable cell wet deposition into local environments and the taxonomic identification of common atmospheric-associated bacterial genera from long-read sequencing highlights the potential usefulness of this platform for atmospheric samples and field campaigns.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"161 - 173"},"PeriodicalIF":2.2,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trends in airborne grass pollen in Évora City (Portugal) 原始研究文章:"埃武拉市(葡萄牙)空气中草花粉的变化趋势
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-02-06 DOI: 10.1007/s10453-024-09808-y
Elsa Rute Guerra Caeiro, Roberto Alexandre Pisa Camacho, Manuel Branco Ferreira, Pedro Carreiro-Martins, Irene Gomes Câmara Camacho
{"title":"Trends in airborne grass pollen in Évora City (Portugal)","authors":"Elsa Rute Guerra Caeiro,&nbsp;Roberto Alexandre Pisa Camacho,&nbsp;Manuel Branco Ferreira,&nbsp;Pedro Carreiro-Martins,&nbsp;Irene Gomes Câmara Camacho","doi":"10.1007/s10453-024-09808-y","DOIUrl":"10.1007/s10453-024-09808-y","url":null,"abstract":"<div><p>Aerobiology could be used as complementary data or proxy for studying phenology, especially in species which usually are not long-distance transported, such as grasses. This 21-year aerobiological study took place in Évora (South Portugal), using a seven-day recording volumetric pollen trap with the aim of analysing the temporal trends of grass pollen seasons. To this end, data were statistically tested for correlation and regression to determine the features and temporal trends of pollen seasons. Main results show that Poaceae pollen has a high representation in pollen spectrum, 20% (min: 7%; max: 44%), with a long season starting in March and lasting till August/September or October. There was an overall, but not statistically significant trend, towards an increase in the annual pollen integral and peak values, and also an overall non-statistically significant trend towards an earlier start and later end of the pollen season. Main and high pollen seasons have been lasting longer, and the days with allergenic potential have been rising in line with the local temperature rising trend. It seems that grass pollen production is being aided by warmer temperatures and increased grassland areas in Alentejo region. This could promote the increase in annual pollen levels and in the number of high pollen days over the years. In clinical terms, it means that grass allergic patients are exposed to longer periods of airborne pollen and to higher counts over a longer time. The climate conditions projected for Alentejo region, including rising temperature, and the changes in local grassland areas may help to clarify the trends of grass pollen seasons in the next decades.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"175 - 189"},"PeriodicalIF":2.2,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-024-09808-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139767295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Examining the roles of meteorological variables in COVID-19 spread in Malaysia 研究气象变量在 COVID-19 在马来西亚传播中的作用
IF 2.2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-01-24 DOI: 10.1007/s10453-023-09804-8
Khai Yuen Ng, Md Zobaer Hasan, Azizur Rahman
{"title":"Examining the roles of meteorological variables in COVID-19 spread in Malaysia","authors":"Khai Yuen Ng,&nbsp;Md Zobaer Hasan,&nbsp;Azizur Rahman","doi":"10.1007/s10453-023-09804-8","DOIUrl":"10.1007/s10453-023-09804-8","url":null,"abstract":"<div><p>There are limited studies that established significant relationships between meteorological variables and COVID-19 spread in Malaysia. Although knowledge from studies conducted in other countries can be utilised as a basis for the policy formulation in general, country-specific studies are necessary as meteorological parameters and COVID-19 spread vary from country to country. This study investigated the potential roles of five meteorological parameters (average relative humidity, maximum temperature, average temperature, minimum temperature, and average wind speed) on COVID-19 spread in each of the 13 states and the entire Malaysia. The state-wise daily COVID-19-confirmed cases and daily meteorological parameters from 1 August 2020 to 31 March 2021 were acquired from Ministry of Health Malaysia and Malaysia Meteorological Department, respectively. The correlations between state-wise daily COVID-19-confirmed cases and daily meteorological parameters were ascertained via Pearson’s and Spearman’s correlation tests at 5% significance level. Overall, significant correlations exist between all meteorological parameters considered in this study and daily COVID-19-confirmed cases throughout Malaysia. Average wind speed was positively correlated with COVID-19-confirmed cases, whereas average relative humidity, maximum temperature, average temperature, and minimum temperature were negatively associated with COVID-19-confirmed cases. These study findings build up knowledge pertaining the association between important meteorological factors and COVID-19 spread in various regions with different climates. The research outcomes could be helpful in understanding, bringing awareness, and educating Malaysian citizens through communication between citizens and governmental as well as non-governmental agencies via official portals to develop a better response mechanism for the Malaysian perspective.</p></div>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"40 2","pages":"129 - 144"},"PeriodicalIF":2.2,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10453-023-09804-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139554868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Expression of allergenic protein and polycyclic aromatic hydrocarbons in the Platanus pollen grains collected from different area of Shanghai 上海不同地区采集的桔梗花粉颗粒中过敏原蛋白和多环芳烃的表达
IF 2 3区 环境科学与生态学
Aerobiologia Pub Date : 2024-01-16 DOI: 10.1007/s10453-023-09805-7
{"title":"Expression of allergenic protein and polycyclic aromatic hydrocarbons in the Platanus pollen grains collected from different area of Shanghai","authors":"","doi":"10.1007/s10453-023-09805-7","DOIUrl":"https://doi.org/10.1007/s10453-023-09805-7","url":null,"abstract":"<h3>Abstract</h3> <p>As one of biological particles, pollen grains could be suspended in air and cause health risks such as pollinosis and rhinitis. Air pollutants can be absorbed on the pollen grains which would increase allergenicity. However, few studies have been focused on characterization of polycyclic aromatic hydrocarbons (PAHs), one kind of toxic pollutants absorbed on pollen grains, and their relationships with the allergenic proteins. In this study, fresh Platanus pollen samples were collected in the central parking area and the outer ring area of Shanghai in the spring of 2023. Mass concentration of allergenic protein (Pla a3) released from the samples collected at the two sampling sites were investigated by using western blot assay and enzyme linked immunosorbent assay, while mass levels of PAHs absorbed on the surface of flower inflorescence and pollen grains were measured by using GC-MS. Our data showed that the mass level of Pla a3 released from the pollen grains collected in the parking area was significantly higher than that collected in the outer ring area. Mass level of PAHs on the flower inflorescence and pollen grains in the parking area was 2 times higher than that in the outer ring area. The molecular docking results indicated that four disulfide bonds (Cys4-Cys52, Cys14-Cys29, Cys30-Cys75, Cys50-Cys89) in the Pla a3 protein structure could interact with the PAHs by hydrogen bonds. This interaction could increase the structural stability of the protein and enhance the allergenicity.</p>","PeriodicalId":7718,"journal":{"name":"Aerobiologia","volume":"226 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139483011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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