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https://www.readbyqxmd.com/read/28339033/role-of-tropomyosin-in-silkworm-allergy
#1
Kyoung Yong Jeong, In-Soo Han, June Yong Lee, Kyung Hee Park, Jae-Hyun Lee, Jung-Won Park
Silkworm pupae are widely consumed in Asian countries and allergic reactions following consumption have been described. However, false‑positive responses in skin prick allergy tests or non‑specific immunoglobulin E (IgE) responses to total extract of silkworm pupa make diagnosis difficult. Although improved allergy diagnosis is required, molecular characterization of silkworm allergens has not been performed to date, except for Bomb m 1, an arginine kinase. This study aimed to evaluate the allergenicity of tropomyosin, a well‑established invertebrate pan‑allergen, from silkworm pupa...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28337681/morphological-and-molecular-evidence-on-the-existence-of-a-single-estuarine-and-rocky-intertidal-acanthocephalan-species-of-profilicollis-meyer-1931-acanthocephala-polymorphidae-along-the-atlantic-and-pacific-coasts-of-southern-south-america
#2
Sara M Rodríguez, Julia I Diaz, Guillermo D'Elía
Profilicollis chasmagnathi Holcman-Spector, Mañé-Garzón & Dei-Cas, 1977 (Acanthocephala: Polymorphidae) has been reported to parasitise different grapsid species as intermediate hosts along the South Atlantic shores, i.e. Cyrtograpsus angulatus (Dana) and Neohelice granulata (Dana) in Uruguay and Cyrtograpsus altimanus (Rathbun) in Argentina. Larvae of a similar acanthocephalan described as Profilicollis antarcticus Zdzitowiecki, 1985 were recorded in the crab Hemigrapsus crenulatus (Milne-Edwards) from an estuarine habitat on the Southeast Pacific shore in Chile...
March 23, 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28336276/chitin-extraction-from-blue-crab-portunus-segnis-and-shrimp-penaeus-kerathurus-shells-using-digestive-alkaline-proteases-from-p-segnis-viscera
#3
Marwa Hamdi, Amal Hammami, Sawssen Hajji, Mourad Jridi, Moncef Nasri, Rim Nasri
Since chitin is closely associated with proteins, deproteinization is a crucial step in the process of extracting chitin. Thus, this research aimed to extract chitin from Portunus segnis and Penaeus kerathurus shells by means of crude digestive alkaline proteases from the viscera of P. segnis, regarding deproteinization step, as an alternative to chemical treatment. Casein zymography revealed that five caseinolytic proteases bands exist, suggesting the presence of at least five different major proteases. The optimum pH and temperature for protease activity was pH 8...
March 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28336053/non-indigenous-predators-threaten-ecosystem-engineers-interactive-effects-of-green-crab-and-oyster-size-on-american-oyster-mortality
#4
Tyler R Pickering, Luke A Poirier, Timothy J Barrett, Shawn McKenna, Jeff Davidson, Pedro A Quijón
Non-indigenous green crabs (Carcinus maenas) are emerging as important predators of autogenic engineers like American oysters (Crassostrea virginica) throughout the eastern seaboard of Canada and the United States. To document the spreading distribution of green crabs, we carried out surveys in seven sites of Prince Edward Island during three fall seasons. To assess the potential impact of green crabs on oyster mortality in relation to predator and prey size, we conducted multiple predator-prey manipulations in the field and laboratory...
March 12, 2017: Marine Environmental Research
https://www.readbyqxmd.com/read/28331406/redescription-of-potamonautes-sidneyi-rathbun-1904-decapoda-potamonautidae-and-description-of-a-new-congeneric-species-from-kwazulu-natal-south-africa
#5
Nasreen Peer, Gavin Gouws, Eric Lazo-Wasem, Renzo Perissinotto, Nelson A F Miranda
A new species of freshwater crab, Potamonautes danielsisp. n., is described from the southern region of the KwaZulu-Natal Province, South Africa. Potamonautes danielsi most closely resembles Potamonautes sidneyi which is re-described here, but can be distinguished by a suite of key morphological characters including carapace shape and width, slim pereopods, inflated propodi of the chelipeds, and the shape and terminal segment length:subterminal segment length ratio of the 1(st) gonopod. In a previous study (Gouws et al...
2017: ZooKeys
https://www.readbyqxmd.com/read/28330919/moving-beyond-linear-food-chains-trait-mediated-indirect-interactions-in-a-rocky-intertidal-food-web
#6
Geoffrey C Trussell, Catherine M Matassa, Patrick J Ewanchuk
In simple, linear food chains, top predators can have positive indirect effects on basal resources by causing changes in the traits (e.g. behaviour, feeding rates) of intermediate consumers. Although less is known about trait-mediated indirect interactions (TMIIs) in more complex food webs, it has been suggested that such complexity dampens trophic cascades. We examined TMIIs between a predatory crab (Carcinus maenas) and two ecologically important basal resources, fucoid algae (Ascophyllum nodosum) and barnacles (Semibalanus balanoides), which are consumed by herbivorous (Littorina littorea) and carnivorous (Nucella lapillus) snails, respectively...
March 29, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28325962/harryplax-severus-a-new-genus-and-species-of-an-unusual-coral-rubble-inhabiting-crab-from-guam-crustacea-brachyura-christmaplacidae
#7
Jose C E Mendoza, Peter K L Ng
Harryplax severus, a new genus and species of coral rubble-dwelling pseudozioid crab is described from the island of Guam in the western Pacific Ocean. The unusual morphological features of its carapace, thoracic sternum, eyes, antennules, pereopods and gonopods place it in the family Christmaplacidae Naruse & Ng, 2014. A suite of characters on the cephalothorax, pleon and appendages distinguishes Harryplax severusgen. & sp. n. from the previously sole representative of the family, Christmaplax mirabilis Naruse & Ng, 2014, described from Christmas Island in the eastern Indian Ocean...
2017: ZooKeys
https://www.readbyqxmd.com/read/28319177/radiological-features-of-primitive-neuroectodermal-tumors-in-intra-abdominal-and-retroperitoneal-regions-a-series-of-18-cases
#8
Xiaoping Yi, Wenguang Liu, Youming Zhang, Desheng Xiao, Hongling Yin, Xueying Long, Li Li, Hongyan Zai, Minfeng Chen, Wenzheng Li, Lunquan Sun
OBJECTIVES: To characterize the imaging and clinicopathological features of primitive neuroectodermal tumors (PNETs) arising in intra-abdominal and retroperitoneal regions. METHODS: Eighteen patients with histopathologically proven intra-abdominal and retroperitoneal PNET were enrolled; computed tomography was performed for all cases, and magnetic resonance imaging was performed for a single case. Typical computed tomography and magnetic resonance imaging findings, including morphology, texture and enhancement features, as well as clinicopathological characteristics and prognosis data were retrospectively analyzed...
2017: PloS One
https://www.readbyqxmd.com/read/28306209/crab-chitin-based-2d-soft-nanomaterials-for-fully-biobased-electric-devices
#9
Jun You, Mingjie Li, Beibei Ding, Xiaochen Wu, Chaoxu Li
2D nanomaterials have various size/morphology-dependent properties applicable in electronics, optics, sensing, and actuating. However, intensively studied inorganic 2D nanomaterials are frequently hindered to apply in some particular and industrial fields, owing to harsh synthesis, high-cost, cytotoxicity, and nondegradability. Endeavor has been made to search for biobased 2D nanomaterials with biocompatibility, sustainability, and biodegradability. A method of hydrophobization-induced interfacial-assembly is reported to produce an unprecedented type of nanosheets from marine chitin...
March 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28303537/concentrations-of-trace-metals-in-tissues-of-chionoecetes-crabs-chionoecetes-japonicus-and-chionoecetes-opilio-caught-from-the-east-japan-sea-waters-and-potential-risk-assessment
#10
Dong-Woon Hwang, Minkyu Choi, In-Seok Lee, Kil-Bo Shim, Tae-Hoon Kim
The concentrations of trace metals (As, Cd, Co, Cu, Fe, Hg, Pb, and Zn) were measured in muscle and hepatopancreas of two Chionoecetes crabs (Chionoecetes japonicus and C. opilio) caught from the East/Japan Sea (EJS) in order to assess the potential health risk by the consumption of deep sea crabs. The highest metal concentrations in muscle and hepatopancreas were As and Fe, respectively, while the lowest metal concentration in two tissues was Pb. The mean concentrations of Cd, Co, Cu, Fe, and Pb in Chionoecetes crabs were one or two orders of magnitude higher in hepatopancreas than in muscles...
March 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28302201/-risk-factors-for-allergic-diseases-in-children-aged-0-24-months-in-the-wuhu-urban-area-anhui-province-china
#11
Shou-Gui Wang, Xiang-Sheng Zhang, Yan-Fang Zhao, Li Sun, Xi-Tao Pan, Ning Wan
OBJECTIVE: To investigate the prevalence of allergic diseases in children aged 0-24 months in the Wuhu urban area of Anhui Province and risk factors for allergic diseases. METHODS: Cluster random sampling was performed to select 600 children aged 0-24 months and their mothers from the Wuhu urban area, and a questionnaire survey was conducted to collect the data of disease history, family history, mothers' conditions during pregnancy, and child-rearing situation...
March 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28300940/distribution-and-abundance-of-freshwater-decapods-in-an-atlantic-rainforest-catchment-with-a-dammed-future
#12
E F Silva-Junior, M Silva-Araújo, T P Moulton
Variations in physical characteristics along the course of a river influence habitat availability which reflects in species distribution. Knowledge of ecology and diversity of lotic species is important for evaluating how river ecosystems will respond to environmental impacts. Freshwater decapods are a group of high ecological and economic importance, but the knowledge about factors influencing their distribution is scarce in Brazil. We performed a survey of decapods to describe their abundance and distribution as well as to study their relationships with stream physical variables and especially their association with different substrates types...
March 13, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28300282/stable-nitrogen-and-carbon-isotopes-in-sediments-and-biota-from-three-tropical-marine-food-webs-application-to-chemical-bioaccumulation-assessment
#13
Hui Zhang, Yun Teng, Tra Thi Thanh Doan, Yun Wei Yat, Sheot Harn Chan, Barry C Kelly
Studies of trophodynamics and contaminant bioaccumulation in tropical marine ecosystems are limited. This study employed stable isotope and trace contaminant analysis to assess sources of primary productivity, trophic interactions and chemical bioaccumulation behavior in two mangrove food webs and one offshore coastal marine food web in Singapore. Samples of sediment, phytoplankton, mangrove leaves, clams, snails, crabs, worms, prawns, and fishes were analyzed for stable carbon and nitrogen isotope values, as well as concentrations of persistent organic pollutants...
March 16, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28291601/molecular-detection-of-hepatozoon-spp-in-domestic-dogs-and-wild-mammals-in-southern-pantanal-brazil-with-implications-in-the-transmission-route
#14
Keyla Carstens Marques de Sousa, Marina Pugnaghi Fernandes, Heitor Miraglia Herrera, Jyan Lucas Benevenute, Filipe Martins Santos, Fabiana Lopes Rocha, Wanessa Teixeira Gomes Barreto, Gabriel Carvalho Macedo, João Bosco Campos, Thiago Fernandes Martins, Pedro Cordeiro Estrela de Andrade Pinto, Darci Barros Battesti, Eliane Mattos Piranda, Paulo Henrique Duarte Cançado, Rosangela Zacarias Machado, Marcos Rogério André
Hepatozoon parasites comprise intracellular apicomplexan parasites transmitted to vertebrate animals by ingestion of arthropods definitive hosts. The present work aimed to investigate the occurrence of Hepatozoon spp. in wild animals, domestic dogs and their respective ectoparasites, in southern Pantanal region, central-western Brazil, by molecular techniques. Between August 2013 and March 2015, 31 coatis (Nasua nasua), 78 crab-eating foxes (Cerdocyon thous), seven ocelots (Leopardus pardalis), 42 dogs (Canis lupus familiaris), 110 wild rodents (77 Thichomys fosteri, 25 Oecomys mamorae, and 8 Clyomys laticeps), 30 marsupials (14 Thylamys macrurus, 11 Gracilinanus agilis, 4 Monodelphis domestica and 1 Didelphis albiventris), and 1582 ticks and 80 fleas collected from the sampled animals were investigated...
February 22, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28288910/characterization-and-functional-analysis-of-a-novel-c-type-lectin-from-the-swimming-crab-portunus-trituberculatus
#15
Junkai Lu, Zuoben Yu, Changkao Mu, Ronghua Li, Weiwei Song, Chunlin Wang
C-type lectins (CTLs) are a family of calcium-dependent carbohydrate-binding proteins. In the present study, a novel C-type lectin (designated as PtCTL1) was identified and characterized from Portunus trituberculatus. The full-length cDNA of PtCTL1 was of 702 bp, containing a 5' untranslated region (UTR) of 91 bp, a 3' UTR of 110 bp with a poly (A) tail, and an open reading frame (ORF) of 501 bp encoding a polypeptide of 166 amino acids with a putative signaling peptide of 21 amino acids. A C-type lectin carbohydrate-recognition domain (CRD) containing four conserved cysteines was identified in the amino acid sequence of PtCTL1...
March 10, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28286629/impact-of-crab-symptoms-in-survival-of-patients-with-symptomatic-myeloma-in-novel-agent-era
#16
Aya Nakaya, Shinya Fujita, Atsushi Satake, Takahisa Nakanishi, Yoshiko Azuma, Yukie Tsubokura, Masaaki Hotta, Hideaki Yoshimura, Kazuyoshi Ishii, Tomoki Ito, Shosaku Nomura
The acronym CRAB summarizes the most typical clinical manifestations of multiple myeloma, these being hypercalcemia, renal failure, anemia, and bone disease. CRAB can be used to distinguish between active, symptomatic multiple myeloma and monoclonal gammopathy of undermined significance or smoldering myeloma. The distinction is relevant not only for classification and diagnosis but also for therapy. CRAB factors influence the prognosis of multiple myeloma. However, it is unclear whether the presence of CRAB factors has an influence on the prognosis of myeloma treated with novel agents...
February 23, 2017: Hematology Reports
https://www.readbyqxmd.com/read/28282622/the-effects-of-fipronil-and-the-photodegradation-product-fipronil-desulfinyl-on-growth-and-gene-expression-in-juvenile-blue-crabs-callinectes-sapidus-at-different-salinities
#17
Andrew D Goff, Parichehr Saranjampour, Lauren M Ryan, Michelle L Hladik, Joseph A Covi, Kevin L Armbrust, Susanne M Brander
Endocrine disrupting compounds (EDCs) are now widely established to be present in the environment at concentrations capable of affecting wild organisms. Although many studies have been conducted in fish, less is known about effects in invertebrates such as decapod crustaceans. Decapods are exposed to low concentrations of EDCs that may cause infertility, decreased growth, and developmental abnormalities. The objective herein was to evaluate effects of fipronil and its photodegradation product fipronil desulfinyl...
February 28, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28280560/territorial-battles-between-fiddler-crab-species
#18
H L Clark, P R Y Backwell
Many species worldwide are impacted by habitat loss. This may result in increased competition both within species and between species. Many studies have demonstrated that when two previously non-overlapping species are forced to compete over a resource, one species is likely to become dominant over the other. This study explores the impact a larger species of fiddler crab (Tabuca elegans-previously known as Uca elegans) has when invading an area previously used solely by a smaller species (Austruca mjoebergi-previously known as Uca mjoebergi)...
January 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28273149/effect-of-thermal-processing-on-t-cell-reactivity-of-shellfish-allergens-discordance-with-ige-reactivity
#19
Jodie B Abramovitch, Andreas L Lopata, Robyn E O'Hehir, Jennifer M Rolland
Crustacean allergy is a major cause of food-induced anaphylaxis. We showed previously that heating increases IgE reactivity of crustacean allergens. Here we investigate the effects of thermal processing of crustacean extracts on cellular immune reactivity. Raw and cooked black tiger prawn, banana prawn, mud crab and blue swimmer crab extracts were prepared and IgE reactivity assessed by ELISA. Mass spectrometry revealed a mix of several allergens in the raw mud crab extract but predominant heat-stable tropomyosin in the cooked extract...
2017: PloS One
https://www.readbyqxmd.com/read/28267872/a-3d-imaging-and-visualization-workflow-using-confocal-microscopy-and-advanced-image-processing-for-brachyuran-crab-larvae
#20
S A Kamanli, T C Kihara, A D Ball, D Morritt, P F Clark
Confocal laser scanning microscopy is an excellent tool for nondestructive imaging of arthropods and can provide detailed information on morphology including fine surface detail. A methodology is presented here for the visualization by confocal microscopy of arthropods, using brachyuran crab zoeal stages as examples and postprocessing techniques derived from micro-CT protocols to improve the final images. This protocol is divided into description of the preprocessing steps (cleaning, staining, digesting and mounting), confocal laser scanning microscopy and data visualization using open-source, freeware programs ImageJ and Drishti...
March 7, 2017: Journal of Microscopy
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