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https://www.readbyqxmd.com/read/28915873/a-prospective-cohort-study-on-ambient-air-pollution-and-respiratory-morbidities-including-childhood-asthma-in-adolescents-from-the-western-cape-province-study-protocol
#1
Toyib Olaniyan, Mohamed Jeebhay, Martin Röösli, Rajen Naidoo, Roslynn Baatjies, Nino Künzil, Ming Tsai, Mark Davey, Kees de Hoogh, Dilys Berman, Bhawoodien Parker, Joy Leaner, Mohamed Aqiel Dalvie
BACKGROUND: There is evidence from existing literature that ambient air pollutant exposure in early childhood likely plays an important role in asthma exacerbation and other respiratory symptoms, with greater effect among asthmatic children. However, there is inconclusive evidence on the role of ambient air pollutant exposures in relation to increasing asthma prevalence as well as asthma induction in children. At the population level, little is known about the potential synergistic effects between pollen allergens and air pollutants since this type of association poses challenges in uncontrolled real life settings...
September 16, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28890769/pollen-load-and-flower-constancy-of-three-species-of-stingless-bees-hymenoptera-apidae-meliponinae
#2
Norita Widya Pangestika, Tri Atmowidi, Sih Kahono
The genera of stingless bees play an important role as pollinators of plants. These bees are actively involved in the pollination of agricultural crops and known to have preferences in selecting flowers to pollinate. The aims of this study were to analyse the pollen load and flower constancy in Tetragonula laeviceps, Lepidotrigona terminata, and Heterotrigona itama. Each individual of species stingless bees collected and was put in a 1.5 mL micro-tube contain 0.5 mL 70% ethanol:glycerol (4:1). Pollen loads on each individual of stingless bees was counted by hemocytometer...
July 2017: Tropical Life Sciences Research
https://www.readbyqxmd.com/read/28889361/brevibacillus-laterosporus-isolated-from-the-digestive-tract-of-honeybees-has-high-antimicrobial-activity-and-promotes-growth-and-productivity-of-honeybee-s-colonies
#3
Jamal M Khaled, Fahd A Al-Mekhlafi, Ramzi A Mothana, Naiyf S Alharbi, Khalid E Alzaharni, Anwar H Sharafaddin, Shine Kadaikunnan, Ahmed S Alobaidi, Noofal I Bayaqoob, Marimuthu Govindarajan, Giovanni Benelli
The development of novel antimicrobial drugs, as well as the discovery of novel compounds able to promote honeybee's growth, represents major challenges for modern entomology. The main aim of this study was to investigate whether Brevibacillus laterosporus isolated from the digestive tract of Saudi honeybees, Apis mellifera, was able to stimulate colony strength parameters of honeybees and to evaluate its ability to produce antimicrobial agents. Honeybees were collected in Dirab, Riyadh Region, Saudi Arabia, and microorganisms were isolated and identified by 16S ribosomal RNA analysis...
September 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28798556/a-metabolomic-geographic-and-seasonal-analysis-of-the-contribution-of-pollen-derived-adenosine-to-allergic-sensitization
#4
Geoffrey A Mueller, Peter M Thompson, Eugene F DeRose, Thomas M O'Connell, Robert E London
BACKGROUND: Studies on ragweed and birch pollen extracts suggested that the adenosine content is an important factor in allergic sensitization. However, exposure levels from other pollens and considerations of geographic and seasonal factors have not been evaluated. OBJECTIVE: This study compared the metabolite profile of pollen species important for allergic disease, specifically measured the adenosine content, and evaluated exposure to pollen-derived adenosine...
December 2016: Metabolomics: Official Journal of the Metabolomic Society
https://www.readbyqxmd.com/read/28752721/phleum-pratense-molecular-pattern-across-italy
#5
G Ciprandi, E Scala, R Ariano
Introduction. Phleum pratense (Timothy grass) is the most frequent cause of grass allergy in Europe. Molecular-based allergy diagnostics have been recently introduced in the clinical practice, allowing to define and characterize exactly the sensitization profile. Aim of the study. The present study was aimed to investigate the possible relationships between Graminaceae pollen data and the pattern of IgE reactivity to different allergen components across Italy. Methods. Pollen data, including duration and quantity, were recorded over a 10-year period in 24 Italian centres located along the Italian peninsula...
July 2017: European Annals of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28745780/the-ambient-pollen-distribution-in-beijing-urban-area-and-its-relationship-with-consumption-of-outpatient-anti-allergic-prescriptions
#6
X-Y Wang, Z-M Tian, H-Y Ning, X-Y Wang
OBJECTIVE: The impact of pollen exposure on allergy medication is poorly characterized. We aim to study the main kind of ambient pollen in Beijing urban area and the correlation with outpatient anti-allergic prescriptions throughout one year in a tertiary hospital. MATERIALS AND METHODS: With a modified volumetric trap, ambient pollens were sampled from January to December 2015. Meanwhile, information on 15 anti-allergic medication prescriptions in outpatient pharmacy was obtained and analyzed by generalized linear model...
July 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28734739/serum-levels-of-squamous-cell-carcinoma-antigens-1-and-2-reflect-disease-severity-and-clinical-type-of-atopic-dermatitis-in-adult-patients
#7
Tomoko Okawa, Yukie Yamaguchi, Kenzen Kou, Junya Ono, Yoshinori Azuma, Noriko Komitsu, Yusuke Inoue, Masumi Kohno, Setsuko Matsukura, Takeshi Kambara, Shoichiro Ohta, Kenji Izuhara, Michiko Aihara
BACKGROUND: Recent studies have indicated that serum levels of squamous cell carcinoma antigen (SCCA) 1 and 2 induced by type 2 cytokines such as IL-4 and IL-13, are increased in patients with atopic dermatitis (AD). However, no clinical studies have analyzed serum levels of SCCA2 in larger series of AD patients or their association with various clinical characteristics. This study was performed to clarify whether serum levels of SCCA2 are associated with disease severity and clinical phenotypes of adult AD patients...
July 19, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/28723912/ginger-and-the-beetle-evidence-of-primitive-pollination-system-in-a-himalayan-endemic-alpine-ginger-roscoea-alpina-zingiberaceae
#8
Babu Ram Paudel, Mani Shrestha, Adrian G Dyer, Qing-Jun Li
The Himalayan endemic alpine genus Roscoea, like other members of ginger family, exhibits the combination of floral traits that would fit pollination by long distant foragers such as bees, birds or flies. We studied the pollination biology of Roscoea alpina, observed potential floral visitors and determined their foraging behaviour, visitation frequency and pollination efficiency, to seek evidence in support of the pollination syndrome hypothesis. We also measured the floral spectra of R. alpina flowers to evaluate if signals fit with the currently known framework for observed floral visitors...
2017: PloS One
https://www.readbyqxmd.com/read/28719626/impact-of-respiratory-infections-outdoor-pollen-and-socioeconomic-status-on-associations-between-air-pollutants-and-pediatric-asthma-hospital-admissions
#9
Julie E Goodman, Christine T Loftus, Xiaobin Liu, Ke Zu
BACKGROUND: Epidemiology studies have shown that ambient concentrations of ozone and fine particulate matter (PM2.5) are associated with increased emergency department (ED) visits and hospital admissions (HAs) for asthma. OBJECTIVE: Evaluate the impact of outdoor pollen, respiratory infections, and socioeconomic status (SES) on the associations between ambient ozone and PM2.5 and asthma HAs in New York City. METHODS: Daily ozone, PM2.5, meteorological factors, pollen, and hospitalization records during 1999 to 2009 were obtained for New York City residents...
2017: PloS One
https://www.readbyqxmd.com/read/28718953/computational-validation-of-the-recently-proposed-pollen-season-definition-criteria
#10
K Karatzas, M Riga, U Berger, M Werchan, O Pfaar, K Ch Bergmann
In a recently published paper (Pfaar et al., 2016), a Task Force of the Immunotherapy and Aerobiology and Pollution Interest Groups of the EAACI suggested specific criteria for the definition of pollen exposure times for three types of pollen events: (a) Pollen Season (PS) start and end, (b) high pollen season (or Peak Pollen Period-PPP) start and end, and (c) high pollen days. Species addressed included Birch, Grasses, Cypress, Olive, and Ragweed. Two important questions arise from the aforementioned definitions: (i) do they lead to a narrow (thus well defined) time interval identifying start and end event dates (robustness of the criteria) and (ii) if slightly altered, will they result to a narrow (thus again well defined) fluctuation of start and end event dates (sensitivity of the criteria)? In an effort to provide with responses to aforementioned questions, we analyzed Poaceae pollen count data coming from Germany (up to 40 pollen monitoring stations, years 2012-2016)...
July 18, 2017: Allergy
https://www.readbyqxmd.com/read/28665769/lack-of-evidence-for-microplastic-contamination-in-honey
#11
Peter Mühlschlegel, Armin Hauk, Ulrich Walter, Robert Sieber
Honey samples from Switzerland were investigated with regard to their microplastic particle burden. Five representative honey samples of different origin were processed following a standardized protocol to separate plastic-based microparticles from particles of natural origin, such as pollen, propolis, wax, and bee-related debris. The procedure was optimized to minimize post-sampling microplastic cross-contamination in the laboratory. The isolated microplastic particles were characterized and grouped by means of light microscopy as well as chemically characterized by microscopically coupled Raman and Fourier transform infrared spectroscopy...
July 10, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
https://www.readbyqxmd.com/read/28566688/sublingual-house-dust-mite-immunotherapy-has-no-impact-on-decrease-of-circulating-erythrocytes-upon-airway-allergen-challenge-in-allergic-rhinitis
#12
Galateja Jordakieva, Michael Kundi, Patrick Lemell, René Zieglmayer, Petra Zieglmayer, Jasminka Godnic-Cvar, Erika Jensen-Jarolim
House dust mite (HDM) allergy is a predominant cause for perennial allergic rhinitis (AR) in Europe. We recently reported that circulating erythrocyte numbers decrease after airway allergen challenge in a murine asthma model and in grass-pollen sensitized AR subjects. Consequently, we aimed to evaluate these findings in HDM sensitized AR subjects and the influence of preceding allergen immunotherapy. Seventy-seven (age 26.8 ± 7.3 years; 54.5% female) HDM-allergic rhinitis subjects previously enrolled in a randomized, monocentric sublingual immunotherapy (SLIT) trial at the Vienna Challenge Chamber (VCC) were included...
May 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28542337/changes-in-hospitalizations-for-chronic-respiratory-diseases-after-two-successive-smoking-bans-in-spain
#13
Iñaki Galán, Lorena Simón, Elena Boldo, Cristina Ortiz, Rafael Fernández-Cuenca, Cristina Linares, María José Medrano, Roberto Pastor-Barriuso
BACKGROUND: Existing evidence on the effects of smoke-free policies on respiratory diseases is scarce and inconclusive. Spain enacted two consecutive smoke-free regulations: a partial ban in 2006 and a comprehensive ban in 2011. We estimated their impact on hospital admissions via emergency departments for chronic obstructive pulmonary disease (COPD) and asthma. METHODS: Data for COPD (ICD-9 490-492, 494-496) came from 2003-2012 hospital admission records from the fourteen largest provinces of Spain and from five provinces for asthma (ICD-9 493)...
2017: PloS One
https://www.readbyqxmd.com/read/28510185/morphological-physiological-cytological-and-phytochemical-studies-in-diploid-and-colchicine-induced-tetraploid-plants-of-fagopyrum-tataricum-l-gaertn
#14
Lin-Jiao Wang, Mao-Yin Sheng, Pei-Cai Wen, Jia-Ying Du
BACKGROUND: Tartary buckwheat are very popular as an important functional food material and its cultivation is very widespread in our whole world, but there obviously lack works in the researches of genetic breeding for agricultural and medicinal utilization. The aim of this study is to obtain good germplasm resources for agricultural and medicinal use of tartary buckwheat (Fagopyrum tataricum) by inducing the tetraploid plants. RESULTS: Four cultivars of F. tataricum, that is, Qianwei 2#, Jinku 2#, Chuanqiao 1#, and Liuqiao 1# were selected to experiment...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28506423/a-case-of-recurrent-facial-angioedema-associated-with-elevated-tree-pollen-counts
#15
Divya Jayaraman, Donna L Bratton, Ronald J Harbeck, Molly Wolf, Nathan Rabinovitch
No abstract text is available yet for this article.
May 11, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28500390/pollen-exposure-and-hospitalization-due-to-asthma-exacerbations-daily-time-series-in-a-european-city
#16
Nicholas J Osborne, Ian Alcock, Benedict W Wheeler, Shakoor Hajat, Christophe Sarran, Yolanda Clewlow, Rachel N McInnes, Deborah Hemming, Mathew White, Sotiris Vardoulakis, Lora E Fleming
Exposure to pollen can contribute to increased hospital admissions for asthma exacerbation. This study applied an ecological time series analysis to examine associations between atmospheric concentrations of different pollen types and the risk of hospitalization for asthma in London from 2005 to 2011. The analysis examined short-term associations between daily pollen counts and hospital admissions in the presence of seasonal and long-term patterns, and allowed for time lags between exposure and admission. Models were adjusted for temperature, precipitation, humidity, day of week, and air pollutants...
May 12, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28480855/plant-aeroallergens-in-two-major-cities-of-georgia-tbilisi-and-kutaisi
#17
T Abramidze, M Gotua, N Chikhelidze, T Cheishvili, A Gamkrelidze
Pollen allergy is caused by a hypersensitivity reaction mainly of the respiratory tract and eye conjunctivae to pollen grains. The number of people allergic to plant aeroallergens has substantially increased in big cities and industrial areas. The monitoring of aerobiological parameters is of paramount importance for the characterization of allergenic risks. The aims of presented study were as follows: to profile the plant aeroallergens in two major cities of Georgia, to compare the character of pollination curves, to determine the dates of beginning of pollen seasons and their duration in particular cities...
March 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28448597/reconstructing-grassland-fire-history-using-sedimentary-charcoal-considering-count-size-and-shape
#18
Berangere A Leys, Julie L Commerford, Kendra K McLauchlan
Fire is a key Earth system process, with 80% of annual fire activity taking place in grassland areas. However, past fire regimes in grassland systems have been difficult to quantify due to challenges in interpreting the charcoal signal in depositional environments. To improve reconstructions of grassland fire regimes, it is essential to assess two key traits: (1) charcoal count, and (2) charcoal shape. In this study, we quantified the number of charcoal pieces in 51 sediment samples of ponds in the Great Plains and tested its relevance as a proxy for the fire regime by examining 13 potential factors influencing charcoal count, including various fire regime components (e...
2017: PloS One
https://www.readbyqxmd.com/read/28417625/influence-of-sensitization-patterns-on-fractional-exhaled-nitric-oxide-in-asthmatic-children
#19
Miao Qing, Xu Wei, Li Zhen, Guan Hui, Liu Xiao-Ying, Huang Hui-Jie, Wang Yan, Ren Yi-Xin, Liu Yong-Ge, Xiang Li
Fractional exhaled nitric oxide (FeNO) has been suggested as a non-invasive biomarker of airway inflammation, which is increased in atopic subjects. Whether sensitization to particular allergens is a predictive factor for increased FeNO levels is not yet fully understood. We conducted a retrospective cross-sectional study. From October to December in 2015, the medical documents of 127 mild, steroid-naive asthmatic children and 34 healthy age-matched children were enrolled in this study. The results of the FeNO measurements, skin prick test, and the spirometry were collected for analysis...
February 2017: Iranian Journal of Allergy, Asthma, and Immunology
https://www.readbyqxmd.com/read/28378978/poaceae-secale-spp-and-artemisia-spp-pollen-in-the-air-at-two-sites-of-different-degrees-of-urbanisation
#20
Aleksandra Kruczek, Małgorzata Puc, Tomasz Wolski
INTRODUCTION: Among herbal plants, most cases of allergic reactions, like seasonal inflammation of nasal mucosa, conjunctivitis and pollen asthma, are related to the allergens from grass pollen. As the blossoming and pollination of rye is known to start the pollen season of grasses, information about the airborne rye pollen count permits alerting the people allergic to certain allergens contained in rye pollen. An important cause of allergy is also the pollen from wormwood, blossoming in late summer, as its two main allergens produce cross-reactions with many other plant allergens...
March 21, 2017: Annals of Agricultural and Environmental Medicine: AAEM
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