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Pollen count

Mika J Mäkelä, Pär Gyllfors, Erkka Valovirta, Maria A Steffensen, Pernille M Grønager, Johannes Savolainen, Lone Winther
PURPOSE: The SQ tree sublingual immunotherapy (SLIT)-tablet containing allergen extracts with the major allergen Bet v 1 from birch pollen is currently being developed for the treatment of tree pollen-induced allergic rhinitis/conjunctivitis with or without asthma. The aim of this Phase II trial was to investigate the dose-related efficacy and safety of the SQ tree SLIT-tablet. METHODS: This study was a randomized, parallel-group, double-blind, placebo-controlled, multi-national trial conducted in Europe...
March 15, 2018: Clinical Therapeutics
Rubaba Hamid Shafique, Shamim Akhter, Shahid Abbas, Muhammad Ismail
This study is the first report on the epidemiological status of house dust mite (HDM) allergy in Pothwar, Pakistan. Allergy data of 2087 symptomatic patients were obtained, of whom 1706 (81.7%) patients were skin-prick-test positive for HDM allergens. This percentage was significantly higher than for pollen and food allergens. In the results of this study Dermatophagoides farinae (61%) and D. pteronyssinus (29%) were the predominant species in the study area. Besides these pyroglyphids, predatory Cheyletus sp...
March 10, 2018: Experimental & Applied Acarology
Maxime Jeanjean, Marie-Abele Bind, Jonathan Roux, Jean-Claude Ongagna, Jérôme de Sèze, Denis Bard, Emmanuelle Leray
BACKGROUND: Triggers of multiple sclerosis (MS) relapses are essentially unknown. PM10 exposure has recently been associated with an increased risk of relapses. OBJECTIVES: We further explore the short-term associations between PM10, NO2, benzene (C6H6), O3, and CO exposures, and the odds of MS relapses' occurrence. METHODS: Using a case-crossover design, we studied 424 MS patients living in the Strasbourg area, France between 2000 and 2009 (1783 relapses in total)...
February 6, 2018: Environmental Research
Maili Lehto, Henrik Wolff, Reko Leino, Harri Alenius, Johannes Savolainen
BACKGROUND: Allergen specific immunotherapy (SIT) effectively alleviates type I allergic diseases characterized by T helper (Th) 2-type immunity. Our recent studies have shown that a synthetic trivalent glycocluster, triacedimannose (TADM), suppresses the Th2-type allergic inflammation. The aim of this study was to compare TADM with two well-known adjuvants, unmethylated cytocine-phosphate-guanine oligodeoxynucleotide (CpG) and monophosphoryl lipid A (MPLA) in a grass allergen induced chronic allergic inflammation model in mice...
January 26, 2018: Allergy
Javier Tello, María Ignacia Montemayor, Astrid Forneck, Javier Ibáñez
Background: Low pollen viability may limit grapevine yield under certain conditions, causing relevant economic losses to grape-growers. It is usually evaluated by the quantification of the number of viable and non-viable pollen grains that are present in a sample after an adequate pollen grain staining procedure. Although the manual counting of both types of grains is the simplest and most sensitive approach, it is a laborious and time-demanding process. In this regard, novel image-based approaches can assist in the objective, accurate and cost-effective phenotyping of this trait...
2018: Plant Methods
Xue-Yan Wang, Ting-Ting Ma, Xiao-Yan Wang, Yan Zhuang, Xiang-Dong Wang, Hui-Yu Ning, Hai-Yun Shi, Rui-Li Yu, Dan Yan, Hong-Dong Huang, Yong-Fei Bai, Guang-Liang Shan, Biao Zhang, Qing-Kun Song, Yan-Fen Zhang, Tie-Jun Zhang, Da-Zhong Jia, Xi-Long Liu, Zhen-Xiang Kang, Wei-Jun Yan, Ba-Te Yang, Xiu-Zhi Bao, Shu-Hua Sun, Fang-Fang Zhang, Wen-Hui Yu, Chao-Lu Bai, Tang Wei, Tong Yang, Tao-Qiong Ma, Xue-Bin Wu, Jian-Guo Liu, Hui Du, Luo Zhang, Yong Yan, De-Yun Wang
BACKGROUND: The aim of this study was to investigate the prevalence of epidemiologic and physician-diagnosed pollen-induced AR (PiAR) in the grasslands of northern China, and to study the impact of the intensity and time of pollen exposure on PiAR prevalence. METHODS: A multistage, clustered and proportionately stratified random sampling with a field-interviewer administrated survey study was performed together with skin prick tests (SPT) and measurements of the daily pollen count...
January 10, 2018: Allergy
Susan W Nicolson, Susana Da Silva Das Neves, Hannelie Human, Christian W W Pirk
Pollen, the main protein source for honey bees, is mixed with regurgitated nectar or honey during collection and then stored as 'bee bread' before its consumption, mainly by young nurse workers. It has been suggested that storage of pollen improves its nutritional value and digestibility, but there is little evidence for such changes. We fed two fresh pollen types of different protein content (aloe and sunflower), and two stored pollen types (sunflower and a mixed pollen), to young caged worker bees. We measured daily consumption of pollen and sucrose solution, and survival after 14 days...
December 26, 2017: Journal of Insect Physiology
M D Galera, B Elvira-Rendueles, J M Moreno, L Negral, M C Ruiz-Abellón, A García-Sánchez, S Moreno-Grau
Olive cultivation is of great importance in Southern Europe but olive pollen is the leading cause of allergy in many regions where it is grown. The best preventive measure for allergic patients is to avoid exposure. Thus, aerobiological monitoring networks must supply realistic pollen classes for the different types of allergic pollen. Even though those pollen classes are defined, they do not necessarily fit local data. Altogether, they should use predictive models to assess flowering intensity in advance. In this study, the Olea pollen degree of exposure classes (OPDEC) are defined based on percentiles and a predictive model is suggested for Cartagena, Spain...
May 1, 2018: Science of the Total Environment
Meryem Bakour, Noori S Al-Waili, Nawal El Menyiy, Hamada Imtara, Anna Cristina Figuira, Thia Al-Waili, Badiaa Lyoussi
Aluminum toxicity might be related to oxidative stress, and the antioxidant activity and protective effect of bee bread, which contains pollen, honey and bees' enzymes, on aluminum induced blood and hepato-renal toxicity was investigated in rats. Chemical analysis and antioxidant capacity of bee bread were conducted. The animal experiment in rats included; group 1: received distilled water (10 ml/kg b.wt), group 2: received aluminum chloride (662.2 mg/kg b.wt), group 3: received aluminum chloride (662.2 mg/kg b...
December 2017: Journal of Food Science and Technology
Ze-Yu Tong, Shuang-Quan Huang
Plant stigmas and bee pollinators are competitors for pollen. Pollen placed on a pollinator's body can be picked up by conspecific stigmas or it can be collected by the pollinator as food. Hypothetically, one solution is for pollen to be placed on 'safe sites' on the pollinator's body, sites where the pollinator cannot easily remove it, leaving the pollen for stigmas. We compared 14 sites on the bumblebee body in terms of the ability of the bee to groom off fluorescent power, a dust that may be thought of as analogous to pollen...
November 13, 2017: Oecologia
Ying Chun Chen, Yang Jung Huang, Chiu Mei Wang, Chin An Chiu, Huey Ling Lin, Pei Fang Lee, Ya Ming Cheng, Chen Chang
BACKGROUND: Lilium callosum is native to Taiwan, but little is known about it since it has been considered extinct since 1915. After the rediscovery of this rare species after a fire in 2011 in Tunghsiao Township, intensive work has been conducted to count the number in the wild population, to develop a conservation strategy, and to understand its reproductive characteristics and even economic potential. RESULTS: To conserve the germplasm of this population, three scales from a wild L...
November 13, 2017: Botanical Studies (Taipei, Taiwan)
Manuel Tritschler, Jutta J Vollmann, Orlando Yañez, Nor Chejanovsky, Karl Crailsheim, Peter Neumann
Multiple infections are common in honey bees, Apis mellifera, but the possible role of nutrition in this regard is poorly understood. Microsporidian infections, which are promoted by protein-fed, can negatively correlate with virus infections, but the role of protein nutrition for the microsporidian-virus interface is unknown. Here, we challenged naturally deformed wing virus - B (DWV-B) infected adult honey bee workers fed with or without pollen ( = protein) in hoarding cages, with the microsporidian Nosema ceranae...
November 8, 2017: Scientific Reports
Nema A Mohamed, Osama M Ahmed, Walaa G Hozayen, Marium A Ahmed
This study aimed to assess the effects of bee pollen (BP) and/or date palm pollen (DPP) suspensions on the glycemic state, testicular dysfunctions, oxidative stress and antioxidant defense system in streptozotocin (STZ)-induced diabetic male Wistar rats. Diabetes mellitus was induced by single intraperitoneal injection of STZ to overnight-fasted rats at dose of 40mg/kg body weight. After 1 week of STZ injection, diabetic rats were treated with BP and/or DPP suspensions at dose levels of 100mg/kg body weight/day for 4 weeks...
October 25, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Masahiko Ayaki, Motoko Kawashima, Miki Uchino, Kazuo Tsubota, Kazuno Negishi
PURPOSE: The purpose of this study was to evaluate the influence of seasons on the signs and symptoms of dry eye disease (DED). METHODS: This is a cross-sectional, case-control study, and participants were non-DED subjects (n=1,916, mean age 54.4±14.4 years) and DED patients (n=684, 54.2±12.1 years) visiting six eye clinics at various practices and locations in Japan. We evaluated the signs and symptoms of DED and the seasons with the most severe results were compared to those with the least severe results in both groups...
2017: Clinical Ophthalmology
Ulas Uguz, Aykut Guvensen, Nedret Sengonca Tort
In this present study, airborne pollen in Çeşme was investigated between February 17, 2012 and February 17, 2014 using the volumetric method. Çeşme, one of Turkey's most important tourism centers, which attracts numerous local and foreign tourists each year, is a district of Izmir, a province in the western part of Turkey. During the 2-year study, 12,905 pollen grains belonging to 64 taxa (33 arboreal, 31 non-arboreal plants) were detected. However, the 2-year data results revealed that the taxa with the pollen concentration more than 4% in the atmosphere were Cupressaceae/Taxaceae (4268 pollen, 33...
September 30, 2017: Environmental Monitoring and Assessment
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
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
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
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
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
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