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https://www.readbyqxmd.com/read/29333846/-food-allergy-in-children-recommendations-for-diagnosis-and-treatment
#1
(no author information available yet)
Food allergy arises from a specific immune response induced by food exposure. It is the first cause of anaphylaxis in childhood. Its prevalence increased exponentially in western countries. The proteins most frequently involved in infants are cow's milk and hen's egg; and in adults, seafood. Peanuts have the same frequency in both groups. The clinical manifestations and methodology of study are directly related to the pathophysiology of the disease. Clinical history, skin prick test, patch test, and food oral challenge are essential to arrive at a correct diagnosis, that will avoid unnecessary exclusions or exposures that carry life risk...
February 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29333344/the-old-and-the-new-plankton-ecological-replacement-of-associations-of-mollusc-plankton-and-giant-filter-feeders-after-the-cretaceous
#2
Amane Tajika, Alexander Nützel, Christian Klug
Owing to their great diversity and abundance, ammonites and belemnites represented key elements in Mesozoic food webs. Because of their extreme ontogenetic size increase by up to three orders of magnitude, their position in the food webs likely changed during ontogeny. Here, we reconstruct the number of eggs laid by large adult females of these cephalopods and discuss developmental shifts in their ecologic roles. Based on similarities in conch morphology, size, habitat and abundance, we suggest that similar niches occupied in the Cretaceous by juvenile ammonites and belemnites were vacated during the extinction and later partially filled by holoplanktonic gastropods...
2018: PeerJ
https://www.readbyqxmd.com/read/29332927/the-response-of-common-marmoset-immunity-against-cedar-pollen-extract
#3
Yuko Yamada, Shuji Takabayashi, Hideki Kato, Kenji Ishiwata, Naohiro Watanabe, Erika Sasaki, Sonoko Habu
The in vivo model of pollinosis has been established using rodents, but the model cannot completely mimic human pollinosis. We used Callithrix jacchus, the common marmoset (CM), to establish a pollinosis animal model using intranasal weekly administration of cedar pollen extract with cholera toxin adjuvant. Some of the treated CMs exhibited the symptoms of snitching, excess nasal mucus and/or sneezing, but the period was very short, and the symptoms disappeared after several weeks. The CD4+CD25+ cell ratio in the peripheral blood increased in CMs quickly after the nasal administration of cedar pollen extract, but the timing was not parallel with the symptoms...
January 15, 2018: Bioscience Trends
https://www.readbyqxmd.com/read/29332833/a-combination-of-thiol-ene-click-chemistry-and-surface-initiated-atom-transfer-radical-polymerization-fabrication-of-boronic-acid-functionalized-magnetic-graphene-oxide-composite-for-enrichment-of-glycoproteins
#4
Jie Su, Xiwen He, Langxing Chen, Yukui Zhang
An efficient glycoproteins enrichment platform is one of vital preprocessing steps in biomarker research and in particular glycoproteomics. In this work, a well-defined boronic acid functionalized magnetic graphene oxide nanocomposite (Fe3O4-GO@PAAPBA) was synthesized for the selective enrichment of glycoproteins from complex biological samples via a novel strategy based on the "thiol-ene" click chemistry and surface initiated atom transfer radical polymerization (SI-ATRP). The initiator of ATRP was anchored to the surface of substrate through "thiol-ene" click reaction...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29332150/ectoparasite-activity-during-incubation-increases-microbial-growth-on-avian-eggs
#5
G Tomás, D Martín-Gálvez, C Ruiz-Castellano, M Ruiz-Rodríguez, J M Peralta-Sánchez, M Martín-Vivaldi, J J Soler
While direct detrimental effects of parasites on hosts are relatively well documented, other more subtle but potentially important effects of parasitism are yet unexplored. Biological activity of ectoparasites, apart from skin injuries and blood-feeding, often results in blood remains, or parasite faeces that accumulate and modify the host environment. In this way, ectoparasite activities and remains may increase nutrient availability that may favour colonization and growth of microorganisms including potential pathogens...
January 13, 2018: Microbial Ecology
https://www.readbyqxmd.com/read/29332097/is-the-atopy-patch-test-reliable-in-the-evaluation-of-food-allergy-related-atopic-dermatitis
#6
Mahboubeh Mansouri, Elham Rafiee, Sepideh Darougar, Mehrnaz Mesdaghi, Zahra Chavoshzadeh
BACKGROUND: Aeroallergens and food allergens are found to be relevant in atopic dermatitis. The atopy patch test (APT) can help to detect food allergies in children with atopic dermatitis. This study evaluates if the APT is a valuable tool in the diagnostic workup of children with food allergy-related atopic dermatitis. METHODS: 42 children between 6 months and 12 years of age were selected at the Mofid Children Hospital. Atopic dermatitis was diagnosed, and the severity of the disease was determined...
January 13, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29332094/low-dose-oral-immunotherapy-using-low-egg-allergen-cookies-for-severe-egg-allergic-children-reduces-allergy-severity-and-affects-allergen-specific-antibodies-in-serum
#7
Akihiro Maeta, Marin Matsushima, Nozomi Muraki, Mariko Asano, Yuri Takaoka, Makoto Kameda, Kyoko Takahashi
BACKGROUND: We evaluated the safety and efficacy of low-egg-allergen cookies (LAC) as low-dose oral immunotherapy (OIT) in children with severe egg allergy. We also examined the relationship between mild desensitization by low-dose OIT and serum biomarkers of allergy. METHODS: We enrolled 13 children with egg allergy who could not receive OIT with hard-boiled egg white (EW). For 11 participants, OIT was carried out using LAC for 3-4 months. Open food challenges with hard-boiled EW and blood samplings were performed before and after OIT...
January 13, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29331832/investigations-on-a-cryopreservation-protocol-for-long-term-storage-of-psittacine-spermatozoa-using-cockatiel-semen-as-an-example
#8
H Schneider, D Fischer, K Failing, C Ehling, S Meinecke-Tillmann, A Wehrend, M Lierz
The aim of the present study was the establishment of an effective protocol for cryopreservation of psittacine semen. Therefore, pooled semen samples of 30 cockatiels (Nymphicus hollandicus) were diluted with modified Lake diluent (1:4), partitioned into four equal parts. Three portions were mixed with three cryoprotectants (dimethylacetamide, dimethyl sulfoxide, glycerol) in 4%, 8% and 12% final concentration, respectively, whereas the 4rth part served as control. Altogether, 96 incremental diluted semen samples were obtained for investigation...
December 16, 2017: Theriogenology
https://www.readbyqxmd.com/read/29331278/impact-of-treatment-with-a-protein-tyrosine-kinase-inhibitor-genistein-on-acute-and-chronic-experimental-schistosoma-mansoni-infection
#9
Maysa Mohamed Kamel Sobhy, Soheir Sayed Mahmoud, Shaimaa Helmy El-Sayed, Enas Mohamed Ali Rizk, Amira Raafat, Mohamed Sherif Ismail Negm
Schistosomiasis mansoni is considered one of the most common fibrotic diseases resulting from inflammation and deposition of fibrous tissue around parasitic eggs trapped in the liver, causing morbidity and mortality. Chemotherapy against schistosomiasis is largely dependent on Praziquantel (PZQ). Yet, the huge administration of it in endemic areas and its incompetence towards the immature stages have raised serious alarms against the development of drug resistance. Few drugs are directed to reverse schistosomal liver fibrosis, particularly at the chronic and advanced stages of the disease...
January 10, 2018: Experimental Parasitology
https://www.readbyqxmd.com/read/29331034/effects-of-in-situ-selenium-exposure-and-maternal-transfer-on-survival-and-deformities-of-brown-trout-salmo-trutta-fry
#10
Sean M Covington, Rami B Naddy, Alan L Prouty, Steven A Werner, Mark Dunn Lewis
Offspring of wild adult brown trout exposed to a range of selenium (Se) concentrations were reared in a laboratory setting to primarily assess effects on survival and deformities. Maternal whole body Se concentrations ranged from 4.7 to 22.6 mg/kg dry weight (dw) for wild fish. Corresponding Se concentrations in embryos ranged from 6.2 to 40.3 mg/kg dw. Significant relationships were found between embryo and whole-body tissue concentrations. Increasing egg Se concentrations were correlated with decreasing survival; however, hatch success was not significantly correlated with increasing embryo Se...
January 13, 2018: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29330802/microinjection-of-antisense-morpholinos-crispr-cas9-rnp-and-rna-dna-into-zebrafish-embryos
#11
Yi Xin, Cunming Duan
In this chapter, we describe a stepwise protocol of microinjection. Using this method, antisense morpholinos, CRISPR-Cas9 ribonucleoprotein complexes, capped mRNA, and DNA can be delivered into fertilized zebrafish eggs to manipulate gene expression during development. This protocol can also be adapted for microinjection in other fish and amphibian species.
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29330771/inhibition-of-human%C3%A2-immunodeficiency-type-1-virus-hiv-1-life-cycle-by-different-egg-white-lysozymes
#12
Mandana Behbahani, Mokhtar Nosrati, Hassan Mohabatkar
Lysozyme is a relatively small enzyme with different biological activities, which is found in tears, saliva, egg white, and human milk. In the study, the anti-HIV-1 activity of lysozymes purified from quail, Meleagris, and hen egg white has been determined. For this end, a time-of-drug-addition assay was performed to identify the target of anti-HIV-1 agents and for determination of probable anti HIV-1 mechanism of the studied lysozyme, the binding affinity of the lysozymes to the human CD4 receptor was studied by molecular docking method...
January 13, 2018: Applied Biochemistry and Biotechnology
https://www.readbyqxmd.com/read/29329840/determination-of-colistin-in-animal-tissues-egg-milk-and-feed-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#13
Qin Fu, Xiaowei Li, Kangni Zheng, Yuebin Ke, Yingyu Wang, Lina Wang, Fugen Yu, Xi Xia
A confirmatory method for the determination of colistin in animal tissues, egg, milk, and feed was developed and validated. Colistin A and colistin B were extracted from samples with the mixture of 10% trichloroacetic acid-acetonitrile and isolated with mixed-mode weak cation exchange cartridge. Analytes were separated from matrix components using ultra-high performance liquid chromatography, and detected with electrospray ionization on a triple quadrupole mass spectrometer. Mean recoveries ranged from 78.0% to 115...
May 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29329708/detection-of-native-proteins-using-solid-substrate-electrospray-ionization-mass-spectrometry-with-nonpolar-solvents
#14
Bin Hu, Zhong-Ping Yao
Detection of native proteins, particularly directly from raw biological samples, has been a challenging task for mass spectrometry. In this study, we demonstrated that solid-substrate electrospray ionization mass spectrometry with nonpolar solvents such as n-hexane could allow detection of native proteins and protein complexes directly from raw biological samples. Mechanistic study revealed that the process involved rapid vaporization of the nonpolar solvent, temperature reduction of substrate surface, condensation of water from the ambient air, and spray ionization of the condensed water with analytes under the electric field...
April 3, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29329626/applicability-of-flotac%C3%A2-technique-in-recovering-equine-strongyle-larvae-in-the-pasture-a-comparison-study
#15
Ingrid Carla do Nascimento Ramos, Rafael Antonio do Nascimento Ramos, Victor Fernando de Santana Lima, Alessio Giannelli, Irma Yaneth Torres López, Leucio Câmara Alves
The FLOTAC® technique represents a highly sensitive method for the isolation of oocysts, eggs, and larvae of parasites in faeces. This assay could be used for detecting free-living stages of nematodes in the pasture but no attempt has been assessed so far. Therefore, the performance of FLOTAC® technique for isolating infective larvae of nematodes in the environment was investigated and compared with the spontaneous sedimentation (SST) and centrifugal sedimentation (CST) techniques. The study was conducted in a horse farm located in northeastern Brazil, where the occurrence of strongyle larvae had been previously reported...
January 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29329623/parasite-control-strategies-used-by-equine-owners-in-the-united-states-a-national-survey
#16
M K Nielsen, M A Branan, A M Wiedenheft, R Digianantonio, L P Garber, C A Kopral, A M Phillippi-Taylor, J L Traub-Dargatz
The widespread occurrence of anthelmintic resistance in equine parasites across the world has led to recommendations of fecal egg count-based parasite programs to reduce treatment intensity and thereby delay further development of resistance as much as possible. The most recent study describing equine parasite control in the United States was conducted 20 years ago, and little is known about current strategies employed. This study was part of the National Animal Health Monitoring Systems (NAHMS) Equine 2015 Study, and aimed to describe equine parasite control strategies in the U...
January 30, 2018: Veterinary Parasitology
https://www.readbyqxmd.com/read/29329490/nematode-eggs-observed-in-cytology-of-cerebrospinal-fluid-diagnostic-for-intramedullary-spirocerca-lupi-spinal-cord-migration
#17
Sigal Klainbart, Orit Chai, Rafael Vaturi, Kira Rapoport, Itamar Aroch, Merav Hagar Shamir
Spinal spirocercosis due to aberrant Spirocerca lupi nematode migration is an emerging etiology for acute myelitis in dogs in Israel, causing severe, mostly nonsymmetrical hind limb paresis or paralysis, and sometimes tetraparesis or tetraparalysis. So far, incidental identification of parasites during spinal surgery or at necropsy provides the only definite diagnosis, while antemortem diagnosis of this condition has been uncertain. Specifically, antemortem diagnosis is based on the typical clinical presentation of acute, progressive, asymmetrical hind limb paresis or paralysis, with moderate to severe eosinophilic to mixed cerebrospinal fluid (CSF) pleocytosis and increased CSF protein concentration...
January 12, 2018: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/29329306/lifespan-extension-without-fertility-reduction-following-dietary-addition-of-the-autophagy-activator-torin1-in-drosophila-melanogaster
#18
Janet S Mason, Tom Wileman, Tracey Chapman
Autophagy is a highly conserved mechanism for cellular repair that becomes progressively down-regulated during normal ageing. Hence, manipulations that activate autophagy could increase lifespan. Previous reports show that manipulations to the autophagy pathway can result in longevity extension in yeast, flies, worms and mammals. Under standard nutrition, autophagy is inhibited by the nutrient sensing kinase Target of Rapamycin (TOR). Therefore, manipulations of TOR that increase autophagy may offer a mechanism for extending lifespan...
2018: PloS One
https://www.readbyqxmd.com/read/29329082/the-domestic-fowl-gallus-gallus-domesticus-embryo-as-an-alternative-for-mammalian-experiments-validation-of-a-test-method-for-the-detection-of-endocrine-disrupting-chemicals
#19
Luzie Jessl, Jessica Scheider, Jörg Oehlmann
In recent decades the embryo of Gallus g. domesticus has been widely used as a model for the study of early sexual development and the potential impact of substances affecting development, including endocrine disrupting chemicals (EDCs). Since there is no standardized procedure available for experiments with the chicken embryo, the objective of our project is to expedite the protocol to assess the potential effects of EDCs on early sexual differentiation. The main aim of the present study was to systematically investigate the natural variability of individual developmental and histological key parameters in untreated and solvent-treated control groups, since this has been insufficiently addressed so far...
December 28, 2017: Chemosphere
https://www.readbyqxmd.com/read/29327323/inclusion-complex-and-nanoclusters-of-cyclodextrin-to-increase-the-solubility-and-efficacy-of-albendazole
#20
P A Pacheco, L N C Rodrigues, J F S Ferreira, A C P Gomes, C J Veríssimo, H Louvandini, R L D Costa, L M Katiki
Albendazole (ABZ), a benzimidazole widely used to control gastrointestinal parasites, is poorly soluble in water, resulting in variable and incomplete bioavailability. This has favored the appearance ABZ-resistant nematodes and, consequently, an increase in its clinical ineffectiveness. Among the pharmaceutical techniques developed to increase drug efficacy, cyclodextrins (CDs) and other polymers have been extensively used with water-insoluble pharmaceutical drugs to increase their solubility and availability...
January 11, 2018: Parasitology Research
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