keyword
MENU ▼
Read by QxMD icon Read
search

larvae

keyword
https://www.readbyqxmd.com/read/28213538/colonization-and-transmission-of-the-gut-microbiota-of-the-burying-beetle-nicrophorus-vespilloides-through-development
#1
Yin Wang, Daniel E Rozen
Carrion beetles in the genus Nicrophorus rear their offspring on decomposing carcasses where larvae are exposed to a diverse community of decomposer bacteria. Parents coat the carcass with antimicrobial secretions prior to egg hatch (defined as Pre-Hatch care) and also feed regurgitated food, and potentially bacteria, to larvae throughout development (defined as Full care). Here we partition the roles of pre- and post-hatch parental care in the transmission and persistence of culturable symbiotic bacteria to larvae...
February 17, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28213036/meat-sources-of-infection-for-outbreaks-of-human-trichinellosis
#2
REVIEW
Ali Rostami, H Ray Gamble, Jean Dupouy-Camet, Hooshang Khazan, Fabrizio Bruschi
Trichinellosis is one of the most important foodborne zoonotic diseases, with worldwide distribution. While human risk for trichinellosis has historically been linked to pork, modern pork production systems and slaughter inspection programs have reduced or eliminated pork as a source for trichinellosis in many countries. While pork may no longer pose a significant risk for trichinellosis, many other animal species may be hosts for Trichinella species nematodes and when human consume meat from these animal species, there may be risk for acquiring trichinellosis...
June 2017: Food Microbiology
https://www.readbyqxmd.com/read/28212668/association-of-community-sanitation-usage-with-soil-transmitted-helminth-infections-among-school-aged-children-in-amhara-region-ethiopia
#3
William E Oswald, Aisha E P Stewart, Michael R Kramer, Tekola Endeshaw, Mulat Zerihun, Berhanu Melak, Eshetu Sata, Demelash Gessese, Tesfaye Teferi, Zerihun Tadesse, Birhan Guadie, Jonathan D King, Paul M Emerson, Elizabeth K Callahan, Matthew C Freeman, W Dana Flanders, Thomas F Clasen, Christine L Moe
BACKGROUND: Globally, in 2010, approximately 1.5 billion people were infected with at least one species of soil-transmitted helminth (STH), Ascaris lumbricoides, Trichuris trichiura, hookworm (Ancylostoma duodenale and Necator americanus). Infection occurs through ingestion or contact (hookworm) with eggs or larvae in the environment from fecal contamination. To control these infections, the World Health Organization recommends periodic mass treatment of at-risk populations with deworming drugs...
February 17, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28212397/a-targeted-gene-expression-platform-allows-for-rapid-analysis-of-chemical-induced-antioxidant-mrna-expression-in-zebrafish-larvae
#4
Margaret G Mills, Evan P Gallagher
Chemical-induced oxidative stress and the biochemical pathways that protect against oxidative damage are of particular interest in the field of toxicology. To rapidly identify oxidative stress-responsive gene expression changes in zebrafish, we developed a targeted panel of antioxidant genes using the Affymetrix QuantiGene Plex (QGP) platform. The genes contained in our panel include eight putative Nrf2 (Nfe2l2a)-dependent antioxidant genes (hmox1a, gstp1, gclc, nqo1, prdx1, gpx1a, sod1, sod2), a stress response gene (hsp70), an inducible DNA damage repair gene (gadd45bb), and three reference genes (actb1, gapdh, hprt1)...
2017: PloS One
https://www.readbyqxmd.com/read/28210981/assessing-common-bean-cultivars-for-resistance-to-the-soybean-looper-chrysodeixis-includens-lepidoptera-noctuidae
#5
R Morando, E L L Baldin, P L Cruz, A L Lourenção
The soybean looper Chrysodeixis includens (Walker) (Lepidoptera: Noctuidae) is known as an important pest of leguminous plants worldwide. In Brazil, this pest species is gaining importance to producers of the common bean Phaseolus vulgaris L. (Fabaceae) because it limits field production of the crop. Chemical control is still the primary method of insect control. However, due to the possible harmful effects of pesticides to humans and the environment, alternative and less aggressive practices are being investigated...
February 16, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28210947/nano-formulation-enhances-insecticidal-activity-of-natural-pyrethrins-against-aphis-gossypii-hemiptera-aphididae-and-retains-their-harmless-effect-to-non-target-predators
#6
Nikos E Papanikolaou, Argyro Kalaitzaki, Filitsa Karamaouna, Antonios Michaelakis, Vassiliki Papadimitriou, Vassilis Dourtoglou, Dimitrios P Papachristos
The insecticidal activity of a new nano-formulated natural pyrethrin was examined on the cotton aphid, Aphis gossypii Glover (Hemiptera: Aphididae), and the predators Coccinella septempunctata L. (Coleoptera: Coccinellidae) and Macrolophus pygmaeus Rambur (Hemiptera: Miridae), in respect with the nano-scale potential to create more effective and environmentally responsible pesticides. Pyrethrin was nano-formulated in two water-in-oil micro-emulsions based on safe biocompatible materials, i.e., lemon oil terpenes as dispersant, polysorbates as stabilizers, and mixtures of water with glycerol as the dispersed aqueous phase...
February 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28210503/strongyloidiasis-current-status-with-emphasis-in-diagnosis-and-drug-research
#7
REVIEW
Tiago Mendes, Karen Minori, Marlene Ueta, Danilo Ciccone Miguel, Silmara Marques Allegretti
Strongyloidiasis is a parasitic neglected disease caused by the nematode Strongyloides stercoralis affecting 30 to 100 million people worldwide. Complications, strongly associated with alcoholism, organ transplants, and HTLV-1 virus, often arise due to late diagnosis, frequently leading to patient death. Lack of preemptive diagnosis is not the only difficulty when dealing with this parasite, since there are no gold standard diagnostic techniques, and the ones used have problems associated with sensitivity, resulting in false negatives...
2017: Journal of Parasitology Research
https://www.readbyqxmd.com/read/28209130/determination-of-antibacterial-activity-and-minimum-inhibitory-concentration-of-larval-extract-of-fly-via-resazurin-based-turbidometric-assay
#8
Chien Huey Teh, Wasi Ahmad Nazni, Ab Hamid Nurulhusna, Ahmad Norazah, Han Lim Lee
BACKGROUND: Antimicrobial resistance is currently a major global issue. As the rate of emergence of antimicrobial resistance has superseded the rate of discovery and introduction of new effective drugs, the medical arsenal now is experiencing shortage of effective drugs to combat diseases, particularly against diseases caused by the dreadful multidrug-resistant strains, such as the methicillin-resistant Staphylococcus aureus (MRSA). The ability of fly larvae to thrive in septic habitats has prompted us to determine the antibacterial activity and minimum inhibitory concentrations (MICs) of larval extract of flies, namely Lucilia cuprina, Sarcophaga peregrina and Musca domestica against 4 pathogenic bacteria [Staphylococcus aureus, methicillin-resistant S...
February 16, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28208772/transcriptional-and-behavioral-responses-of-zebrafish-larvae-to-microcystin-lr-exposure
#9
Eleni Tzima, Iliana Serifi, Ioanna Tsikari, Ainhoa Alzualde, Ioannis Leonardos, Thomais Papamarcaki
Microcystins are cyclic heptapeptides that constitute a diverse group of toxins produced by cyanobacteria. One of the most toxic variants of this family is microcystin-LR (MCLR) which is a potent inhibitor of protein phosphatase 2A (PP2A) and induces cytoskeleton alterations. In this study, zebrafish larvae exposed to 500 μg/L of MCLR for four days exhibited a 40% reduction of PP2A activity compared to the controls, indicating early effects of the toxin. Gene expression profiling of the MCLR-exposed larvae using microarray analysis revealed that keratin 96 (krt96) was the most downregulated gene, consistent with the well-documented effects of MCLR on cytoskeleton structure...
February 9, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28208716/cell-imaging-counting-as-a-novel-ex-vivo-approach-for-investigating-drug-induced-hepatotoxicity-in-zebrafish-larvae
#10
Xuan-Bac Nguyen, Stanislav Kislyuk, Duc-Hung Pham, Angela Kecskés, Jan Maes, Deirdre Cabooter, Pieter Annaert, Peter De Witte, Annelii Ny
Drug-induced liver injury (DILI) is the most common reason for failures during the drug development process and for safety-related withdrawal of drugs from the pharmaceutical market. Therefore, having tools and techniques that can detect hepatotoxic properties in drug candidates at an early discovery stage is highly desirable. In this study, cell imaging counting was used to measure in a fast, straightforward, and unbiased way the effect of paracetamol and tetracycline, (compounds known to cause hepatotoxicity in humans) on the amount of DsRed-labeled hepatocytes recovered by protease digestion from Tg(fabp10a:DsRed) transgenic zebrafish...
February 8, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28207793/the-drosophila-speciation-factor-hmr-localizes-to-genomic-insulator-sites
#11
Thomas Andreas Gerland, Bo Sun, Pawel Smialowski, Andrea Lukacs, Andreas Walter Thomae, Axel Imhof
Hybrid incompatibility between Drosophila melanogaster and D. simulans is caused by a lethal interaction of the proteins encoded by the Hmr and Lhr genes. In D. melanogaster the loss of HMR results in mitotic defects, an increase in transcription of transposable elements and a deregulation of heterochromatic genes. To better understand the molecular mechanisms that mediate HMR's function, we measured genome-wide localization of HMR in D. melanogaster tissue culture cells by chromatin immunoprecipitation. Interestingly, we find HMR localizing to genomic insulator sites that can be classified into two groups...
2017: PloS One
https://www.readbyqxmd.com/read/28207787/hyaluronic-acid-synthesis-is-required-for-zebrafish-tail-fin-regeneration
#12
Xiaohu Ouyang, Nicholas J Panetta, Maya D Talbott, Alexander Y Payumo, Caroline Halluin, Michael T Longaker, James K Chen
Using genome-wide transcriptional profiling and whole-mount expression analyses of zebrafish larvae, we have identified hyaluronan synthase 3 (has3) as an upregulated gene during caudal fin regeneration. has3 expression is induced in the wound epithelium within hours after tail amputation, and its onset and maintenance requires fibroblast growth factor, phosphoinositide 3-kinase, and transforming growth factor-ß signaling. Inhibition of hyaluronic acid (HA) synthesis by the small molecule 4-methylumbelliferone (4-MU) impairs tail regeneration in zebrafish larvae by preventing injury-induced cell proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28206869/acoustic-control-of-mosquito-larvae-in-artificial-drinking-water-containers
#13
Seth C Britch, Herbert Nyberg, Robert L Aldridge, Tom Swan, Kenneth J Linthicum
Emerging technology designed to kill mosquito larvae with sound waves may present a nonchemical and nonbiological alternative to reduce larval populations of key medically important mosquito species such as Aedes aegypti in containers or catchments of water. These devices could benefit integrated vector management programs facing public resistance to the use of chemical or biological larvicides in stored drinking water. In this study we investigate the efficacy of a Larvasonic SD-Mini Acoustic Larvicide device in reducing larval populations of Ae...
December 2016: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28206865/assessment-of-a-simple-compound-saving-method-to-study-insecticidal-activity-of-natural-extracts-and-pure-compounds-against-mosquito-larvae
#14
Michaël Falkowski, Arnaud Jahn-Oyac, Emma Ferrero, Jean Issaly, Véronique Eparvier, Romain Girod, Alice M S Rodrigues, Didier Stien, Emeline Houël, Isabelle Dusfour
Research on natural insecticides has intensified with the spread of resistance to chemicals among insects, particularly disease vectors. To evaluate compounds, the World Health Organization (WHO) has published standardized procedures. However, those may be excessively compound-consuming when it comes to assessing the activity of natural extracts and pure compounds isolated in limited amount. As part of our work on the discovery of new mosquito larvicides from Amazonian plants, we developed a compound-saving assay in 5-ml glass tubes instead of WHO larval 100-ml cups...
December 2016: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28206862/haemagogus-leucocelaenus-and-other-mosquitoes-potentially-associated-with-sylvatic-yellow-fever-in-cantareira-state-park-in-the-s%C3%A3-o-paulo-metropolitan-area-brazil
#15
Luis Filipe Mucci, Antônio Ralph Medeiros-Sousa, Walter Ceretti-Júnior, Aristides Fernandes, Amanda Alves Camargo, Eduardo Evangelista, Rafael de Oliveira Christe, Joyce Montes, Renildo Souza Teixeira, Mauro Toledo Marrelli
The aim of this work was to investigate whether Haemagogus leucocelaenus and other mosquito species associated with sylvatic transmission of yellow fever virus are present in Cantareira State Park (CSP) in the São Paulo Metropolitan Area (SPMA). From October 2015 to March 2016, adult mosquitoes were captured with the Centers for Disease Control and Prevention traps, manual battery-powered aspirators, and Shannon traps; larvae and pupae were collected in natural and artificial breeding sites. A total of 109 adult mosquito specimens and 30 immature forms belonging to 11 taxonomic categories in 4 genera (Aedes, Psorophora, Sabethes, and Haemagogus) were collected, including Hg...
December 2016: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28206701/differential-responses-of-helicoverpa-armigera-c-type-immunlectin-genes-to-the-endoparasitoid-campoletis-chlorideae
#16
Xiong-Ya Wang, Su-Fen Bai, Xin Li, Shi-Heng An, Xin-Ming Yin, Xian-Chun Li
The C-type lectins mediate nonself recognition in insects. The previous studies focused on host immunlectin response to bacterial infection; however, the molecular basis of immunlectin reactions to endoparasitoids has not been elucidated. The present study investigated the effect of parasitization by Campoletis chlorideae on hemagglutination activity (HA; defined as the ability of lectin to agglutinate erythrocytes or other cells), and transcriptional expression of C-type immunlectin genes in the larval host, Helicoverpa armigera...
February 16, 2017: Archives of Insect Biochemistry and Physiology
https://www.readbyqxmd.com/read/28205590/antifouling-potential-of-nature-inspired-sulfated-compounds
#17
Joana R Almeida, Marta Correia-da-Silva, Emília Sousa, Jorge Antunes, Madalena Pinto, Vitor Vasconcelos, Isabel Cunha
Natural products with a sulfated scaffold have emerged as antifouling agents with low or nontoxic effects to the environment. In this study 13 sulfated polyphenols were synthesized and tested for antifouling potential using the anti-settlement activity of mussel (Mytilus galloprovincialis) plantigrade post-larvae and bacterial growth inhibition towards four biofilm-forming bacterial strains. Results show that some of these Nature-inspired compounds were bioactive, particularly rutin persulfate (2), 3,6-bis(β-D-glucopyranosyl) xanthone persulfate (6), and gallic acid persulfate (12) against the settlement of plantigrades...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205543/ontogenetic-loops-in-habitat-use-highlight-the-importance-of-littoral-habitats-for-early-life-stages-of-oceanic-fishes-in-temperate-waters
#18
Patrick Polte, Paul Kotterba, Dorothee Moll, Lena von Nordheim
General concepts of larval fish ecology in temperate oceans predominantly associate dispersal and survival to exogenous mechanisms such as passive drift along ocean currents. However, for tropical reef fish larvae and species in inland freshwater systems behavioural aspects of habitat selection are evidently important components of dispersal. This study is focused on larval Atlantic herring (Clupea harengus) distribution in a Baltic Sea retention area, free of lunar tides and directed current regimes, considered as a natural mesocosm...
February 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205115/a-fixed-precision-sequential-sampling-plan-for-the-potato-tuberworm-moth-phthorimaea-operculella-zeller-lepidoptera-gelechidae-on-potato-cultivars
#19
M Shahbi, A Rajabpour
Phthorimaea operculella Zeller is an important pest of potato in Iran. Spatial distribution and fixed-precision sequential sampling for population estimation of the pest on two potato cultivars, Arinda(®) and Sante(®), were studied in two separate potato fields during two growing seasons (2013-2014 and 2014-2015). Spatial distribution was investigated by Taylor's power law and Iwao's patchiness. Results showed that the spatial distribution of eggs and larvae was random. In contrast to Iwao's patchiness, Taylor's power law provided a highly significant relationship between variance and mean density...
February 15, 2017: Neotropical Entomology
https://www.readbyqxmd.com/read/28204887/determination-of-monoamine-neurotransmitters-in-zebrafish-danio-rerio-by-gas-chromatography-coupled-to-mass-spectrometry-with-a-two-step-derivatization
#20
Alvaro Aragon, Jessica Legradi, Ana Ballesteros-Gómez, Juliette Legler, Martin van Velzen, Jacob de Boer, Pim Leonards
A sensitive analytical method for the determination of monoamine neurotransmitters (MNTs) in zebrafish larvae was developed using gas chromatography coupled to mass spectrometry. Six MNTs were selected as target compounds for neurotoxicity testing. MNTs underwent a two-step derivatization with hexamethyldisilazane (HDMS) for O-silylation followed by N-methyl-bis-heptafluorobutyramide (MBHFBA) for N-perfluoroacylation. Derivatization conditions were optimized by an experimental design approach. Method validation showed linear calibration curves (r (2) > 0...
February 15, 2017: Analytical and Bioanalytical Chemistry
keyword
keyword
83272
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"