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https://www.readbyqxmd.com/read/27920408/asthma-and-other-allergic-diseases-among-saudi-schoolchildren-in-najran-the-need-for-a-comprehensive-intervention-program
#1
Jobran M Alqahtani
BACKGROUND: In the last three decades, an increasing incidence of allergic diseases has been associated with increasing morbidity and mortality in children and young adults. OBJECTIVES: The study aimed to investigate the prevalence and risk factors associated with allergic diseases among Saudi schoolchildren in the southwestern Saudi region of Najran, and to determine the sensitization of patients to a set of allergens. DESIGN: Cross-sectional observational study...
November 2016: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/27920159/gametophytic-pollen-tube-guidance-attractant-peptides-gametic-controls-and-receptors
#2
Tetsuya Higashiyama, Wei-Cai Yang
No abstract text is available yet for this article.
December 5, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27917060/antarctotrechus-balli-sp-n-carabidae-trechini-the-first-ground-beetle-from-antarctica
#3
Allan C Ashworth, Terry L Erwin
Fossil elytra of a small trechine carabid are reported from the Oliver Bluffs on the Beardmore Glacier at lat. 85°S. They were compared with counterparts from the extant genera Trechisibus, Tasmanorites, Oxytrechus and Pseudocnides. The fossils share some characters but are sufficiently different to be described as a new genus and species. We named the new species Antarctotrechus balli in honour of George E. Ball who made major contributions to the study of carabids through his own research and the training of students while at the University of Alberta, Edmonton, Alberta, Canada...
2016: ZooKeys
https://www.readbyqxmd.com/read/27916955/multi-residue-analysis-of-pesticide-residues-in-crude-pollens-by-uplc-ms-ms
#4
Zhou Tong, Yan-Can Wu, Qiong-Qiong Liu, Yan-Hong Shi, Li-Jun Zhou, Zhen-Yu Liu, Lin-Sheng Yu, Hai-Qun Cao
A multi-residue method for the determination of 54 pesticide residues in pollens has been developed and validated. The proposed method was applied to the analysis of 48 crude pollen samples collected from eight provinces of China. The recovery of analytes ranged from 60% to 136% with relative standard deviations (RSDs) below 30%. Of the 54 targeted compounds, 19 pesticides were detected. The major detection rates of each compound were 77.1% for carbendazim, 58.3% for fenpropathrin, 56.3% for chlorpyrifos, 50...
December 1, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27916846/dehydropyrrolizidine-alkaloid-toxicity-cytotoxicity-and-carcinogenicity
#5
REVIEW
Bryan L Stegelmeier, Steven M Colegate, Ammon W Brown
Dehydropyrrolizidine alkaloid (DHPA)-producing plants have a worldwide distribution amongst flowering plants and commonly cause poisoning of livestock, wildlife, and humans. Previous work has produced considerable understanding of DHPA metabolism, toxicity, species susceptibility, conditions, and routes of exposure, and pathogenesis of acute poisoning. Intoxication is generally caused by contaminated grains, feed, flour, and breads that result in acute, high-dose, short-duration poisoning. Acute poisoning produces hepatic necrosis that is usually confirmed histologically, epidemiologically, and chemically...
November 29, 2016: Toxins
https://www.readbyqxmd.com/read/27915467/the-physics-of-pollinator-attraction
#6
REVIEW
Edwige Moyroud, Beverley J Glover
Contents 1 I. 1 II. 1 III. 3 IV. 4 V. 4 4 References 5 SUMMARY: This Tansley Insight focuses on recent advances in our understanding of how flowers manipulate physical forces to attract animal pollinators and ensure reproductive success. Research has traditionally explored the role of chemical pigments and volatile organic compounds as cues for pollinators, but recent reports have demonstrated the importance of physical and structural means of pollinator attraction. Here we explore the role of petal microstructure in influencing floral light capture and optics, analysing colour, gloss and polarization effects...
December 4, 2016: New Phytologist
https://www.readbyqxmd.com/read/27913982/pharmacological-management-of-allergic-rhinitis-in-the-elderly
#7
REVIEW
Andrzej Bozek
Recent studies suggest that allergic rhinitis is highly prevalent in the elderly population, but is underdiagnosed and undertreated. This review article briefly introduces allergic rhinitis in the elderly (epidemiology and pathophysiology) and identifies the main goals of treatment in these patients with respect to age-related physiological factors, comorbid conditions and polypharmacy. The primary focus of the article is a narrative review of the literature concerning the different types of treatment options in elderly patients aged 60+ years (pharmacological therapy and allergen-specific immunotherapy)...
December 3, 2016: Drugs & Aging
https://www.readbyqxmd.com/read/27913739/structure-activity-relation-of-amor-sugar-molecule-that-activates-pollen-tubes-for-ovular-guidance
#8
Jiao Jiao, Akane G Mizukami, Subramanian Sankaranarayanan, Junichiro Yamguchi, Kenichiro Itami, Tetsuya Higashiyama
Successful fertilization in flowering plants depends on the precise directional growth control of pollen tube through the female pistil tissue, towards the female gametophyte contained in the ovule for delivery of non-motile sperm cells. Cysteine-rich peptides LUREs secreted from the synergid cells on either side of the egg cell act as ovular attractants of pollen tubes. Competency control by the pistil is crucial for the response of pollen tubes to these ovular attractants. We recently reported that ovular 4-O-methyl-glucuronosyl arabinogalactan AMOR induces competency of the pollen tube to respond to ovular attractant LURE peptides in Torenia fournieri...
December 2, 2016: Plant Physiology
https://www.readbyqxmd.com/read/27911847/zika-virus-cell-tropism-in-the-developing-human-brain-and-inhibition-by-azithromycin
#9
Hanna Retallack, Elizabeth Di Lullo, Carolina Arias, Kristeene A Knopp, Matthew T Laurie, Carmen Sandoval-Espinosa, Walter R Mancia Leon, Robert Krencik, Erik M Ullian, Julien Spatazza, Alex A Pollen, Caleigh Mandel-Brehm, Tomasz J Nowakowski, Arnold R Kriegstein, Joseph L DeRisi
The rapid spread of Zika virus (ZIKV) and its association with abnormal brain development constitute a global health emergency. Congenital ZIKV infection produces a range of mild to severe pathologies, including microcephaly. To understand the pathophysiology of ZIKV infection, we used models of the developing brain that faithfully recapitulate the tissue architecture in early to midgestation. We identify the brain cell populations that are most susceptible to ZIKV infection in primary human tissue, provide evidence for a mechanism of viral entry, and show that a commonly used antibiotic protects cultured brain cells by reducing viral proliferation...
November 29, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27911415/extraction-of-plant-based-capsules-for-microencapsulation-applications
#10
Michael G Potroz, Raghavendra C Mundargi, Jae Hyeon Park, Ee-Lin Tan, Nam-Joon Cho
Microcapsules derived from plant-based spores or pollen provide a robust platform for a diverse range of microencapsulation applications. Sporopollenin exine capsules (SECs) are obtained when spores or pollen are processed so as to remove the internal sporoplasmic contents. The resulting hollow microcapsules exhibit a high degree of micromeritic uniformity and retain intricate microstructural features related to the particular plant species. Herein, we demonstrate a streamlined process for the production of SECs from Lycopodium clavatum spores and for the loading of hydrophilic compounds into these SECs...
November 9, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911374/flow-cytometric-analysis-of-particle-bound-bet-v-1-allergen-in-pm10
#11
Katrin Süring, Sabine Bach, Conny Höflich, Wolfgang Straff
Flow cytometry is a method widely used to quantify suspended solids such as cells or bacteria in a size range from 0.5 to several tens of micrometers in diameter. In addition to a characterization of forward and sideward scatter properties, it enables the use of fluorescent labeled markers like antibodies to detect respective structures. Using indirect antibody staining, flow cytometry is employed here to quantify birch pollen allergen (precisely Bet v 1)-loaded particles of 0.5 to 10 µm in diameter in inhalable particulate matter (PM10, particle size ≤10 µm in diameter)...
November 19, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27909970/over-expression-of-mir158-causes-pollen-abortion-in-brassica-campestris-ssp-chinensis
#12
Zhiming Ma, Jianxia Jiang, Ziwei Hu, Tianqi Lyu, Yang Yang, Jingjing Jiang, Jiashu Cao
We identified and cloned the two precursors of miR158 and its target gene in Brassica campestris ssp. chinensis, which both had high relative expression in the inflorescences. Further study revealed that over-expression of miR158 caused reduced pollen varbility, which was caused by the degradation of pollen contents from the binucleate microspore stage. These results first suggest the role of miR158 in pollen development of Brassica campestris ssp. chinensis. MicroRNAs (miRNAs) play crucial roles in many important growth and development processes both in plants and animals by regulating the expression of their target genes via mRNA cleavage or translational repression...
December 1, 2016: Plant Molecular Biology
https://www.readbyqxmd.com/read/27908260/-a-proteomics-approach-to-discover-drought-tolerance-proteins-in-wheat-pollen-grain-at-meiosis-stage
#13
Reza Fotovat, Mehdi Alikhani, Mostafa Valizadeh, Mehdi Mirzaei, Ghasem Hossein Salekdeh
Plants reproductive phase, when grain yield and consequently farmers' investment is most in jeopardy, is considered as the most sensitive stage to drought stress. In this study, we aimed to explore the proteomic response of wheat anther at meiosis stage in a drought tolerant, Darab, and susceptible, Shiraz, wheat genotypes. Wheat plants were exposed to drought stress at meiosis stage for four days under controlled environmental conditions. Then, anthers from both genotypes were sampled, and their proteomes were examined via quantitative proteomics analysis...
November 30, 2016: Protein and Peptide Letters
https://www.readbyqxmd.com/read/27907922/distinct-contributory-factors-determine-basophil-allergen-sensitivity-in-grass-pollen-rhinitis-and-in-anaphylactic-wasp-venom-allergy
#14
Peter Korošec, Mira Šilar, Peter Kopač, Renato Eržen, Mihaela Zidarn, Mitja Košnik
BACKGROUND: We sought to determine whether basophil-allergen sensitivity could be transferred to donor basophils by passive IgE sensitisation in allergic rhinitis and anaphylactic Hymenoptera venom hypersensitivity. METHODS: We studied 15 wasp venom-, 19 grass pollen- and 2 house dust mite-allergic patients, 2 healthy donors, and 8 wasp venom-allergic donors. In all subjects, we first evaluated the initial basophil response to wasp venom, grass pollen, or house dust mite allergen...
December 2, 2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/27907133/phosphorous-nutritional-level-carbohydrate-reserves-and-flower-quality-in-olives
#15
Ran Erel, Uri Yermiyahu, Hagai Yasuor, Dan Cohen Chamus, Amnon Schwartz, Alon Ben-Gal, Arnon Dag
The olive tree is generally characterized by relatively low final fruit set consequential to a significant rate of undeveloped pistils, pistil abortion, and flower and fruitlet abscission. These processes are acknowledged to be governed by competition for resources between the developing vegetative and reproductive organs. To study the role of phosphorus (P) nutritional level on reproductive development, trees were grown under four levels of P for three years in large containers. Phosphorus nutritional level was positively related to rate of reproductive bud break, inflorescence weight, rate of hermaphrodite flowers, pistil weight, fruitlet persistence, fruit set and the consequential total number of fruits...
2016: PloS One
https://www.readbyqxmd.com/read/27907097/levels-of-selected-persistent-organic-pollutants-pcb-pbde-and-pesticides-in-honey-bee-pollen-sampled-in-poland
#16
Marek Łukasz Roszko, Marta Kamińska, Krystyna Szymczyk, Renata Jędrzejczak
Chemical plant protection is a commonly discussed factor potentially responsible for decline in pollinators and other beneficial insect populations. Various groups of chemicals including persistent organic pollutants could impact a bee colony's welfare and are reported to be present in bee tissue and apiary products. The aim of this work was to evaluate the presence of selected persistent organic pollutant and pesticide residues in bee pollen originating from different geographical regions of Poland. Pesticide residues were identified in 60% of tested bee pollen samples...
2016: PloS One
https://www.readbyqxmd.com/read/27906504/combination-of-two-epitope-identification-techniques-enables-the-rational-design-of-soy-allergen-gly-m-4-mutants
#17
Heide Havenith, Karolin Kern, Paul Rautenberger, Holger Spiegel, Michael Szardenings, Elke Ueberham, Jörg Lehmann, Matthias Buntru, Simon Vogel, Regina Treudler, Rainer Fischer, Stefan Schillberg
BACKGROUND: Detailed IgE-binding epitope analysis is a key requirement for the understanding and development of diagnostic and therapeutic agents to address food allergies. METHODS: We combined an IgE-specific linear peptide microarray with random phage peptide display for the high-resolution mapping of IgE-binding epitopes of the major soybean allergen Gly m 4, which is a homologue to the birch pollen allergen Bet v1. RESULTS: Three epitopes were identified and mapped to a resolution of four key amino acids, allowing the rational design and the production of three Gly m 4 mutants with the aim to abolish or reduce the binding of epitope-specific IgE...
December 1, 2016: Biotechnology Journal
https://www.readbyqxmd.com/read/27904461/outbreak-and-spread-of-bacterial-canker-of-kiwifruit-caused-by-pseudomonas-syringae-pv-actinidiae-biovar-3-in-korea
#18
Gyoung Hee Kim, Kwang-Hyung Kim, Kyeong In Son, Eu Ddeum Choi, Young Sun Lee, Jae Sung Jung, Young Jin Koh
A bacterial pathogen, Pseudomonas syringae pv. actinidiae (Psa), is a causal agent of kiwifruit bacterial canker worldwide. Psa biovar 3 (Psa3) was first detected in 2011 at an orchard in Dodeok-myeon, Goheunggun, Jeonnam Province in Korea. In this study, we present the results of an epidemiological study regarding Psa3 occurrence on kiwifruit orchards in Korea for the period of 2013 to 2015. Since the first detection of Psa3 in 2011, there was no further case reported by 2013. However, Psa3 was rapidly spreading to 33 orchards in 2014; except for three orchards in Sacheonsi, Gyeongnam Province, most cases were reported in Jeju Island...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27903420/microbiology-of-processed-edible-insect-products-results-of-a-preliminary-survey
#19
Nils Th Grabowski, Günter Klein
Little is known of the microbiology of processed insect products. The present survey analysed a total of n=38 samples of deep-fried and spiced (Acheta domesticus, Locusta migratoria, and Omphisa fuscidentalis), cooked in soy sauce ("tsukudani"; Oxya yezoensis, Vespula flaviceps, and Bombyx mori), dried (A. domesticus, L. migatoria, Alphitobius diaperinus, Tenebrio molitor, B. mori, Hermetia illucens, and Musca domestica), powdered (H. illucens, T. molitor) and other (incl. deep-frozen B. mori and honeybee pollen) insect products microbiologically (total bacterial count [TBC], Enterobacteriaceae, staphylococci, bacilli, and yeasts and moulds counts, salmonellae, Listeria monocytogenes, and Escherichia coli)...
November 9, 2016: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/27902978/the-efficacy-of-sublingual-immunotherapy-for-allergic-rhinitis-may-vary-with-the-time-of-day
#20
Satoshi Igarashi, Keisuke Suzuki, Yuki Nakamura, Kayoko Ishimaru, Chiharu Fukano, Keisuke Masuyama, Katsuyo Ohashi-Doi, Atsuhito Nakao
BACKGROUND: Sublingual immunotherapy (SLIT) is a safe and effective treatment for allergic rhinitis (AR). However, many issues regarding SLIT remain to be resolved, including the optimal timing of administration. This study investigated the effect of time of day on SLIT efficacy with the goal of optimizing the therapeutic outcome. METHODS: We performed prophylactic SLIT at different times of day (10 a.m. or 10 p.m.) in 2 mouse models of AR: an ovalbumin (OVA)-induced AR model and Cry j 1-induced AR model, and compared the effects...
December 1, 2016: International Archives of Allergy and Immunology
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