keyword
MENU ▼
Read by QxMD icon Read
search

Mosquitos

keyword
https://www.readbyqxmd.com/read/28545111/northern-range-expansion-of-the-asian-tiger-mosquito-aedes-albopictus-analysis-of-mosquito-data-from-connecticut-usa
#1
Philip M Armstrong, Theodore G Andreadis, John J Shepard, Michael C Thomas
BACKGROUND: The Asian tiger mosquito (Aedes albopictus) is an invasive species and important arbovirus vector that was introduced into the U.S. in the 1980's where it continues to expand its range. Winter temperature is an important constraint to its northward expansion, with potential range limits located between the 0° and -5°C mean cold month isotherm. Connecticut is located within this climatic zone and therefore, Ae. albopictus was monitored statewide to assess its northern range expansion and to delineate where populations can stably persist...
May 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28545090/neotropical-bats-that-co-habit-with-humans-function-as-dead-end-hosts-for-dengue-virus
#2
Amanda Vicente-Santos, Andres Moreira-Soto, Claudio Soto-Garita, Luis Guillermo Chaverri, Andrea Chaves, Jan Felix Drexler, Juan Alberto Morales, Alejandro Alfaro-Alarcón, Bernal Rodríguez-Herrera, Eugenia Corrales-Aguilar
Several studies have shown Dengue Virus (DENV) nucleic acids and/or antibodies present in Neotropical wildlife including bats, suggesting that some bat species may be susceptible to DENV infection. Here we aim to elucidate the role of house-roosting bats in the DENV transmission cycle. Bats were sampled in households located in high and low dengue incidence regions during rainy and dry seasons in Costa Rica. We captured 318 bats from 12 different species in 29 households. Necropsies were performed in 205 bats to analyze virus presence in heart, lung, spleen, liver, intestine, kidney, and brain tissue...
May 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28545061/microbiota-induced-peritrophic-matrix-regulates-midgut-homeostasis-and-prevents-systemic-infection-of-malaria-vector-mosquitoes
#3
Faye H Rodgers, Mathilde Gendrin, Claudia A S Wyer, George K Christophides
Manipulation of the mosquito gut microbiota can lay the foundations for novel methods for disease transmission control. Mosquito blood feeding triggers a significant, transient increase of the gut microbiota, but little is known about the mechanisms by which the mosquito controls this bacterial growth whilst limiting inflammation of the gut epithelium. Here, we investigate the gut epithelial response to the changing microbiota load upon blood feeding in the malaria vector Anopheles coluzzii. We show that the synthesis and integrity of the peritrophic matrix, which physically separates the gut epithelium from its luminal contents, is microbiota dependent...
May 17, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28542540/elevation-as-a-proxy-for-mosquito-borne-zika-virus-transmission-in-the-americas
#4
Alexander G Watts, Jennifer Miniota, Heather A Joseph, Oliver J Brady, Moritz U G Kraemer, Ardath W Grills, Stephanie Morrison, Douglas H Esposito, Adriano Nicolucci, Matthew German, Maria I Creatore, Bradley Nelson, Michael A Johansson, Gary Brunette, Simon I Hay, Kamran Khan, Marty Cetron
INTRODUCTION: When Zika virus (ZIKV) first began its spread from Brazil to other parts of the Americas, national-level travel notices were issued, carrying with them significant economic consequences to affected countries. Although regions of some affected countries were likely unsuitable for mosquito-borne transmission of ZIKV, the absence of high quality, timely surveillance data made it difficult to confidently demarcate infection risk at a sub-national level. In the absence of reliable data on ZIKV activity, a pragmatic approach was needed to identify subnational geographic areas where the risk of ZIKV infection via mosquitoes was expected to be negligible...
2017: PloS One
https://www.readbyqxmd.com/read/28542484/simulating-within-vector-generation-of-the-malaria-parasite-diversity
#5
Lauren M Childs, Olivia F Prosper
Plasmodium falciparum, the most virulent human malaria parasite, undergoes asexual reproduction within the human host, but reproduces sexually within its vector host, the Anopheles mosquito. Consequently, the mosquito stage of the parasite life cycle provides an opportunity to create genetically novel parasites in multiply-infected mosquitoes, potentially increasing parasite population diversity. Despite the important implications for disease transmission and malaria control, a quantitative mapping of how parasite diversity entering a mosquito relates to diversity of the parasite exiting, has not been undertaken...
2017: PloS One
https://www.readbyqxmd.com/read/28542335/interventions-that-effectively-target-anopheles-funestus-mosquitoes-could-significantly-improve-control-of-persistent-malaria-transmission-in-south-eastern-tanzania
#6
Emmanuel W Kaindoa, Nancy S Matowo, Halfan S Ngowo, Gustav Mkandawile, Arnold Mmbando, Marcelina Finda, Fredros O Okumu
Malaria is transmitted by many Anopheles species whose proportionate contributions vary across settings. We re-assessed the roles of Anopheles arabiensis and Anopheles funestus, and examined potential benefits of species-specific interventions in an area in south-eastern Tanzania, where malaria transmission persists, four years after mass distribution of long-lasting insecticide-treated nets (LLINs). Monthly mosquito sampling was done in randomly selected households in three villages using CDC light traps and back-pack aspirators, between January-2015 and January-2016, four years after the last mass distribution of LLINs in 2011...
2017: PloS One
https://www.readbyqxmd.com/read/28542242/-we-do-not-bury-dead-livestock-like-human-beings-community-behaviors-and-risk-of-rift-valley-fever-virus-infection-in-baringo-county-kenya
#7
Edna N Mutua, Salome A Bukachi, Bernard K Bett, Benson A Estambale, Isaac K Nyamongo
BACKGROUND: Rift Valley Fever (RVF), is a viral zoonotic disease transmitted by Aedes and Culex mosquitoes. In Kenya, its occurrence is associated with increased rains. In Baringo County, RVF was first reported in 2006 resulting in 85 human cases and 5 human deaths, besides livestock losses and livelihood disruptions. This study sought to investigate the county's current RVF risk status. METHODOLOGY AND PRINCIPAL FINDINGS: A cross-sectional study on the knowledge, attitudes and practices of RVF was conducted through a mixed methods approach utilizing a questionnaire survey (n = 560) and 26 focus group discussions (n = 231)...
May 24, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28542240/wmel-limits-zika-and-chikungunya-virus-infection-in-a-singapore-wolbachia-introgressed-ae-aegypti-strain-wmel-sg
#8
Cheong Huat Tan, PeiSze Jeslyn Wong, Meizhi Irene Li, HuiTing Yang, Lee Ching Ng, Scott Leslie O'Neill
BACKGROUND: Zika (ZIKV) and Chikungunya (CHIKV) viruses are emerging Aedes-borne viruses that are spreading outside their known geographic range and causing wide-scale epidemics. It has been reported that these viruses can be transmitted efficiently by Ae. aegypti. Recent studies have shown that Ae. aegypti when transinfected with certain Wolbachia strains shows a reduced replication and dissemination of dengue (DENV), Chikungunya (CHIKV), and Yellow Fever (YFV) viruses. The aim of this study was to determine whether the wMel strain of Wolbachia introgressed onto a Singapore Ae...
May 19, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28542123/malaria-surveillance-united-states-2014
#9
Kimberly E Mace, Paul M Arguin
PROBLEM/CONDITION: Malaria in humans is caused by intraerythrocytic protozoa of the genus Plasmodium. These parasites are transmitted by the bite of an infective female Anopheles mosquito. The majority of malaria infections in the United States occur among persons who have traveled to regions with ongoing malaria transmission. However, malaria is occasionally acquired by persons who have not traveled out of the country through exposure to infected blood products, congenital transmission, laboratory exposure, or local mosquitoborne transmission...
May 26, 2017: MMWR. Surveillance Summaries: Morbidity and Mortality Weekly Report. Surveillance Summaries
https://www.readbyqxmd.com/read/28541740/controlling-aedes-albopictus-and-culex-pipiens-pallens-using-silver-nanoparticles-synthesized-from-aqueous-extract-of-cassia-fistula-fruit-pulp-and-its-mode-of-action
#10
Hatem Fouad, Li Hongjie, Dawood Hosni, Jiqian Wei, Ghulam Abbas, Hassan Ga'al, Mo Jianchu
Mosquitoes act as key vector for transmission of devastating parasites and pathogens which affect millions of people globally. In this research, the green synthesis of silver nanoparticles of Cassia fistula fruit pulp as an innovative and operative tool against vector mosquitoes is presented. Silver nanoparticles were characterized by a series of techniques including Fourier transform infrared spectroscopy, Transmission Electron Microscope and confirmed by Scanning Electron Microscope, UV-Vis spectrophotometry and X-ray diffraction...
May 25, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/28541424/a-new-in-vitro-bioassay-system-for-the-discovery-and-quantitative-evaluation-of-mosquito-repellents
#11
Abbas Ali, Charles L Cantrell, Ikhlas A Khan
Mosquitoes vector many pathogens that cause human diseases. Repellents play a significant role in reducing the risk of these diseases by preventing mosquito bites. In this paper, we are reporting an Ali and Khan (A & K), large cage in vitro bioassay system that can effectively be used to measure repellency of compounds against mosquitoes. The system uses temperature as a landing and feeding stimulus, and collagen as a feeding substrate. The minimum effective dose (MED) of DEET (N, N-diethyl-meta-toluamide; 19...
May 24, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28541371/knowledge-about-the-human-immunodeficiency-syndrome-among-elders-in-a-unit-for-the-care-of-the-elderly
#12
Giovanna Gaudenci Nardelli, Bruna Stephanie Sousa Malaquias, Eliana Maria Gaudenci, Carolina Silva Ledic, Nayara Freitas Azevedo, Vitória Eugênia Martins, Álvaro da Silva Santos
Objective: To analyze the knowledge of elders regarding HIV/AIDS. Methods: Descriptive, cross-sectional, quantitative study, with 457 elders from the Unit for the Care of Elders in Uberaba - Minas Gerais, lasting 3 months. The instruments used were the Mental State Mini-exam and a questionnaire on the human immunodeficiency virus for elders, together with frequency measures for their analysis. Results: Most participants were female (74%), between 60 and 69 y/o (51%)...
May 18, 2017: Revista Gaúcha de Enfermagem
https://www.readbyqxmd.com/read/28539933/mal-de-r%C3%A3-o-cuarto-virus-infection-triggers-the-production-of-distinctive-viral-derived-sirna-profiles-in-wheat-and-its-planthopper-vector
#13
Luis A de Haro, Analía D Dumón, María F Mattio, Evangelina Beatriz Argüello Caro, Gabriela Llauger, Diego Zavallo, Hervé Blanc, Vanesa C Mongelli, Graciela Truol, María-Carla Saleh, Sebastián Asurmendi, Mariana Del Vas
Plant reoviruses are able to multiply in gramineae plants and delphacid vectors encountering different defense strategies with unique features. This study aims to comparatively assess alterations of small RNA (sRNA) populations in both hosts upon virus infection. For this purpose, we characterized the sRNA profiles of wheat and planthopper vectors infected by Mal de Río Cuarto virus (MRCV, Fijivirus, Reoviridae) and quantified virus genome segments by quantitative reverse transcription PCR We provide evidence that plant and insect silencing machineries differentially recognize the viral genome, thus giving rise to distinct profiles of virus-derived small interfering RNAs (vsiRNAs)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28539441/chikungunya-virus-overcomes-polyamine-depletion-by-mutation-of-nsp1-and-the-opal-stop-codon-to-confer-enhanced-replication-and-fitness
#14
Bryan C Mounce, Teresa Cesaro, Lea Vlajnić, Anna Vidiņa, Thomas Vallet, James Weger-Lucarelli, Gabriella Pasoni, Kenneth A Stapleford, Jean-Pierre Levraud, Marco Vignuzzi
Polyamines, small positively-charge molecules present in all cells, play important roles in the replication of DNA and RNA viruses. Chikungunya virus (CHIKV) relies on polyamines for translation of the viral genome upon viral entry, and pharmacological depletion of polyamines limits viral replication. However, the potential development of antiviral resistance necessitates a better understanding of how polyamines function and can be targeted via compounds that alter polyamine levels. We have isolated CHIKV that is resistant to polyamine depletion that contains two mutations in the non-structural protein 1 (nsP1) coding region in combination with mutation to the opal stop codon preceding nsP4...
May 24, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28539440/uncovering-the-repertoire-of-endogenous-flaviviral-elements-in-aedes-mosquito-genomes
#15
Yasutsugu Suzuki, Lionel Frangeul, Laura B Dickson, Hervé Blanc, Yann Verdier, Joelle Vinh, Louis Lambrechts, Maria-Carla Saleh
Endogenous viral elements derived from non-retroviral RNA viruses were described in various animal genomes. Whether they have a biological function such as host immune protection against related viruses is a field of intense study. Here, we investigated the repertoire of endogenous flaviviral elements (EFVEs) in Aedes mosquitoes, the vectors of arboviruses such as dengue and chikungunya viruses. Previous studies identified three EFVEs from Ae. albopictus and one from Ae. aegypti cell lines. However, in-depth characterization of EFVEs in wild-type mosquito populations and individuals in vivo has not been performed...
May 24, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28538734/zika-virus-evolution-and-spread-in-the-americas
#16
Hayden C Metsky, Christian B Matranga, Shirlee Wohl, Stephen F Schaffner, Catherine A Freije, Sarah M Winnicki, Kendra West, James Qu, Mary Lynn Baniecki, Adrianne Gladden-Young, Aaron E Lin, Christopher H Tomkins-Tinch, Simon H Ye, Daniel J Park, Cynthia Y Luo, Kayla G Barnes, Rickey R Shah, Bridget Chak, Giselle Barbosa-Lima, Edson Delatorre, Yasmine R Vieira, Lauren M Paul, Amanda L Tan, Carolyn M Barcellona, Mario C Porcelli, Chalmers Vasquez, Andrew C Cannons, Marshall R Cone, Kelly N Hogan, Edgar W Kopp, Joshua J Anzinger, Kimberly F Garcia, Leda A Parham, Rosa M Gélvez Ramírez, Maria C Miranda Montoya, Diana P Rojas, Catherine M Brown, Scott Hennigan, Brandon Sabina, Sarah Scotland, Karthik Gangavarapu, Nathan D Grubaugh, Glenn Oliveira, Refugio Robles-Sikisaka, Andrew Rambaut, Lee Gehrke, Sandra Smole, M Elizabeth Halloran, Luis Villar, Salim Mattar, Ivette Lorenzana, Jose Cerbino-Neto, Clarissa Valim, Wim Degrave, Patricia T Bozza, Andreas Gnirke, Kristian G Andersen, Sharon Isern, Scott F Michael, Fernando A Bozza, Thiago M L Souza, Irene Bosch, Nathan L Yozwiak, Bronwyn L MacInnis, Pardis C Sabeti
Although the recent Zika virus (ZIKV) epidemic in the Americas and its link to birth defects have attracted a great deal of attention, much remains unknown about ZIKV disease epidemiology and ZIKV evolution, in part owing to a lack of genomic data. Here we address this gap in knowledge by using multiple sequencing approaches to generate 110 ZIKV genomes from clinical and mosquito samples from 10 countries and territories, greatly expanding the observed viral genetic diversity from this outbreak. We analysed the timing and patterns of introductions into distinct geographic regions; our phylogenetic evidence suggests rapid expansion of the outbreak in Brazil and multiple introductions of outbreak strains into Puerto Rico, Honduras, Colombia, other Caribbean islands, and the continental United States...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28538723/genomic-epidemiology-reveals-multiple-introductions-of-zika-virus-into-the-united-states
#17
Nathan D Grubaugh, Jason T Ladner, Moritz U G Kraemer, Gytis Dudas, Amanda L Tan, Karthik Gangavarapu, Michael R Wiley, Stephen White, Julien Thézé, Diogo M Magnani, Karla Prieto, Daniel Reyes, Andrea M Bingham, Lauren M Paul, Refugio Robles-Sikisaka, Glenn Oliveira, Darryl Pronty, Carolyn M Barcellona, Hayden C Metsky, Mary Lynn Baniecki, Kayla G Barnes, Bridget Chak, Catherine A Freije, Adrianne Gladden-Young, Andreas Gnirke, Cynthia Luo, Bronwyn MacInnis, Christian B Matranga, Daniel J Park, James Qu, Stephen F Schaffner, Christopher Tomkins-Tinch, Kendra L West, Sarah M Winnicki, Shirlee Wohl, Nathan L Yozwiak, Joshua Quick, Joseph R Fauver, Kamran Khan, Shannon E Brent, Robert C Reiner, Paola N Lichtenberger, Michael J Ricciardi, Varian K Bailey, David I Watkins, Marshall R Cone, Edgar W Kopp, Kelly N Hogan, Andrew C Cannons, Reynald Jean, Andrew J Monaghan, Robert F Garry, Nicholas J Loman, Nuno R Faria, Mario C Porcelli, Chalmers Vasquez, Elyse R Nagle, Derek A T Cummings, Danielle Stanek, Andrew Rambaut, Mariano Sanchez-Lockhart, Pardis C Sabeti, Leah D Gillis, Scott F Michael, Trevor Bedford, Oliver G Pybus, Sharon Isern, Gustavo Palacios, Kristian G Andersen
Zika virus (ZIKV) is causing an unprecedented epidemic linked to severe congenital abnormalities. In July 2016, mosquito-borne ZIKV transmission was reported in the continental United States; since then, hundreds of locally acquired infections have been reported in Florida. To gain insights into the timing, source, and likely route(s) of ZIKV introduction, we tracked the virus from its first detection in Florida by sequencing ZIKV genomes from infected patients and Aedes aegypti mosquitoes. We show that at least 4 introductions, but potentially as many as 40, contributed to the outbreak in Florida and that local transmission is likely to have started in the spring of 2016-several months before its initial detection...
May 24, 2017: Nature
https://www.readbyqxmd.com/read/28537028/enhanced-larvicidal-antibacterial-and-photocatalytic-efficacy-of-tio2-nanohybrids-green-synthesized-using-the-aqueous-leaf-extract-of-parthenium-hysterophorus
#18
Keerthika Thandapani, Manikandan Kathiravan, Elangovan Namasivayam, Indira Arulselvi Padiksan, Geetha Natesan, Manish Tiwari, Benelli Giovanni, Venkatachalam Perumal
Titanium dioxide nanoparticles are emerging as a biocompatible nanomaterial with multipurpose bioactivities. In this study, titanium dioxide (TiO2) nanoparticles were effectively synthesized using the aqueous leaf extracts of Parthenium hysterophorus prepared by microwave irradiation. TiO2 nanoparticles were fabricated by treating the P. hysterophorus leaf extracts with the TiO4 solution. Biologically active compounds such as alcohols, phenols, alkanes, and fluoroalkanes were involved in bioreduction of TiO4 into TiO2...
May 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28536536/rna-seq-comparison-of-larval-and-adult-malpighian-tubules-of-the-yellow-fever-mosquito-aedes-aegypti-reveals-life-stage-specific-changes-in-renal-function
#19
Yiyi Li, Peter M Piermarini, Carlos J Esquivel, Hannah E Drumm, Faye D Schilkey, Immo A Hansen
Introduction: The life history of Aedes aegypti presents diverse challenges to its diuretic system. During the larval and pupal life stages mosquitoes are aquatic. With the emergence of the adult they become terrestrial. This shifts the organism within minutes from an aquatic environment to a terrestrial environment where dehydration has to be avoided. In addition, female mosquitoes take large blood meals, which present an entirely new set of challenges to salt and water homeostasis. Methods: To determine differences in gene expression associated with these different life stages, we performed an RNA-seq analysis of the main diuretic tissue in A...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28534930/sensitivity-of-rt-pcr-method-in-samples-shown-to-be-positive-for-zika-virus-by-rt-qpcr-in-vector-competence-studies
#20
Marcelo Henrique Santos Paiva, Duschinka Ribeiro Duarte Guedes, Walter Soares Leal, Constância Flávia Junqueira Ayres
Tissue samples from mosquitoes artificially infected with Zika virus and shown to be positive by RT-qPCR were reexamined by RT-PCR. Using these samples we compared the two methods employed in virus RNA detection for vector competence studies. Results demonstrated that, albeit useful, RT-PCR gave false negatives with low viral loads (< 106 RNA copies/ml).
May 22, 2017: Genetics and Molecular Biology
keyword
keyword
27061
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"