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https://www.readbyqxmd.com/read/28230813/characterization-of-carbonic-anhydrase-9-in-the-alimentary-canal-of-aedes-aegypti-and-its-relationship-to-homologous-mosquito-carbonic-anhydrases
#1
Daniel P Dixon, Leslie Van Ekeris, Paul J Linser
In the mosquito midgut, luminal pH regulation and cellular ion transport processes are important for the digestion of food and maintenance of cellular homeostasis. pH regulation in the mosquito gut is affected by the vectorial movement of the principal ions including bicarbonate/carbonate and protons. As in all metazoans, mosquitoes employ the product of aerobic metabolism carbon dioxide in its bicarbonate/carbonate form as one of the major buffers of cellular and extracellular pH. The conversion of metabolic carbon dioxide to bicarbonate/carbonate is accomplished by a family of enzymes encoded by the carbonic anhydrase gene family...
February 21, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28229475/first-cases-of-zika-virus-infected-us-blood-donors-outside-states-with-areas-of-active-transmission
#2
Phillip C Williamson, Jeffrey M Linnen, Debra A Kessler, Beth H Shaz, Hany Kamel, Ralph R Vassallo, Valerie Winkelman, Kui Gao, Rainer Ziermann, Juscilene Menezes, Stephen Thomas, Jerry A Holmberg, Sonia Bakkour, Mars Stone, Kai Lu, Graham Simmons, Michael P Busch
BACKGROUND: Zika virus (ZIKV) is transmitted by Aedes mosquitos and can result in severe congenital and adult neurologic abnormalities. ZIKV has rapidly spread northward through Central America and the Caribbean and autochthonous cases have been identified in the continental United States. High rates of ZIKA RNA positivity were detected in blood donors during previous epidemics. ZIKV transmission by transfused blood from healthy donor components has been a growing concern. STUDY DESIGN AND METHODS: Individual-donation aliquots of plasma from volunteer blood donors were tested individually with an investigational Procleix ZIKV assay...
February 23, 2017: Transfusion
https://www.readbyqxmd.com/read/28228159/the-effect-of-interspecific-competition-on-the-temporal-dynamics-of-aedes-albopictus-and-culex-pipiens
#3
Giovanni Marini, Giorgio Guzzetta, Frederic Baldacchino, Daniele Arnoldi, Fabrizio Montarsi, Gioia Capelli, Annapaola Rizzoli, Stefano Merler, Roberto Rosà
BACKGROUND: Aedes albopictus and Culex pipiens larvae reared in the same breeding site compete for resources, with an asymmetrical outcome that disadvantages only the latter species. The impact of these interactions on the overall ecology of these two species has not yet been assessed in the natural environment. In the present study, the temporal patterns of adult female mosquitoes from both species were analysed in north-eastern Italy, and substantial temporal shifts between abundance curves of Cx...
February 23, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28226083/dengue-infection-in-the-nervous-system-lessons-learned-for-zika-and-chikungunya
#4
Marzia Puccioni-Sohler, Natalia Roveroni, Carolina Rosadas, Fernando Ferry, Jose Mauro Peralta, Amilcar Tanuri
Dengue, Zika and Chikungunya are emerging arboviruses and important causes of acute febrile disease in tropical areas. Although dengue does not represent a new condition, a geographic expansion over time has occurred with the appearance of severe neurological complications. Neglect has allowed the propagation of the vector (Aedes spp), which is also responsible for the transmission of other infections such as Zika and Chikungunya throughout the world. The increased number of infected individuals has contributed to the rise of neurological manifestations including encephalitis, myelitis, meningitis, Guillain-Barré syndrome and congenital malformations such as microcephaly...
February 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28225377/inappropriate-shocks-and-power-delivery-using-adult-automatic-external-defibrillator-pads-in-a-pediatric-patient
#5
Shai Tejman-Yarden, Uriel Katz, Marina Rubinstein, Yehuda Attias, Reem Yahia, David Mishali, Michael Glikson
The use of automatic external defibrillators (AEDs) during pulseless resuscitations is considered safe and reliable, and was established as part of the guidelines in out-of-hospital events. Based on extensive studies, the use of the standard AED is now indicated in every age group with a preference of pediatric pad application for small children and babies. If unavailable, adult pads are recommended. We report a case of 2 inappropriate AED shocks that were delivered to a neonate during a pulseless resuscitation after application of adult pads...
February 21, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28225068/relish2-mediates-bursicon-homodimer-induced-prophylactic-immunity-in-the-mosquito-aedes-aegypti
#6
Hongwei Zhang, Shengzhang Dong, Xi Chen, David Stanley, Brenda Beerntsen, Qili Feng, Qisheng Song
Bursicon is a neuropeptide hormone consisting of two cystine-knot proteins (burs α and burs β), responsible for cuticle tanning and other developmental processes in insects. Recent studies show that each bursicon subunit forms homodimers that induce prophylactic immunity in Drosophila melanogaster. Here, we investigated the hypothesis that bursicon homodimers act in prophylactic immunity in insects, and possibly arthropods, generally, using the mosquito, Aedes aegypti. We found that burs α and burs β are expressed in larvae, pupae and newly emerged adults...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28223504/transcriptome-wide-microrna-and-target-dynamics-in-the-fat-body-during-the-gonadotrophic-cycle-of-aedes-aegypti
#7
Xiufeng Zhang, Emre Aksoy, Thomas Girke, Alexander S Raikhel, Fedor V Karginov
The mosquito Aedes aegypti is a major vector of numerous viral diseases, because it requires a blood meal to facilitate egg development. The fat body, a counterpart of mammalian liver and adipose tissues, is the metabolic center, playing a key role in reproduction. Therefore, understanding of regulatory networks controlling its functions is critical, and the role of microRNAs (miRNAs) in the process is largely unknown. We aimed to explore miRNA expression and potential targets in the female fat body of Ae. aegypti, as well as their changes postblood meal (PBM)...
February 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28223259/use-of-an-antiepileptic-drug-to-control-epileptic-seizures-associated-with-cranioplasty-a-randomised-controlled-trial
#8
Fei Chen, Yaqi Duan, Yongqin Li, Wenjie Han, Weilei Shi, Weiwei Zhang, Yonghua Huang
BACKGROUND: Epilepsy is a common complication of cranioplasty. The present study was designed to explore the clinical effect of prophylactic anti-epilepsy drugs (AED) to control epileptic seizures associated with cranioplasty. METHODS: and design: This trial was a prospective, randomized, open-label, single-centre, active controlled study designed to investigate the use of antiepileptic drug to control epileptic seizures associated with cranioplasty. We tested the necessity and methods of drug use...
February 18, 2017: International Journal of Surgery
https://www.readbyqxmd.com/read/28222341/patient-emotions-and-perceptions-of-antiepileptic-drug-changes-and-titration-during-treatment-for-epilepsy
#9
Jesse Fishman, Greg Cohen, Colin Josephson, Ann Marie Collier, Srikanth Bharatham, Ying Zhang, Imane Wild
OBJECTIVE: To investigate the impact of antiepileptic drug (AED) change and dose titration on the emotional well-being of patients with epilepsy. METHODS: Members of an online epilepsy community were invited to voluntarily participate in an online survey. The cross-sectional anonymous survey consisted of 31 multiple choice questions balanced in terms of variety and positivity/negativity of emotions concerning participants' most recent AED change. To substantiate survey results, spontaneous comments from epilepsy-related online forums and social media websites that mentioned participants' experiences with AED medication changes (termed passive listening statements) were analyzed and categorized by theme...
February 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28222339/everyday-memory-impairment-in-patients-with-temporal-lobe-epilepsy-caused-by-hippocampal-sclerosis
#10
Patrícia Rzezak, Ellen Marise Lima, Ana Carolina Gargaro, Erica Coimbra, Silvia de Vincentiis, Tonicarlo Rodrigues Velasco, João Pereira Leite, Geraldo F Busatto, Kette D Valente
OBJECTIVE: Patients with temporal lobe epilepsy caused by hippocampal sclerosis (TLE-HS) have episodic memory impairment. Memory has rarely been evaluated using an ecologic measure, even though performance on these tests is more related to patients' memory complaints. We aimed to measure everyday memory of patients with TLE-HS to age- and gender-matched controls. METHODS: We evaluated 31 patients with TLE-HS and 34 healthy controls, without epilepsy and psychiatric disorders, using the Rivermead Behavioral Memory Test (RBMT), Visual Reproduction (WMS-III) and Logical Memory (WMS-III)...
February 18, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28219407/development-of-dirofilaria-immitis-and-dirofilaria-repens-in-aedes-japonicus-and-aedes-geniculatus
#11
Cornelia Silaghi, Relja Beck, Gioia Capelli, Fabrizio Montarsi, Alexander Mathis
BACKGROUND: The mosquito-borne filarial nematodes Dirofilaria immitis and Dirofilaria repens primarily affect dogs but also cats, causing heartworm disease or subcutaneous dirofilariosis, respectively, and both may also cause zoonotic diseases in humans. Several mosquito species have been reported as competent vectors for these nematodes, but no data are available for the invasive mosquito species Aedes japonicus (Theobald, 1901). The objective of this study was to describe the development of both D...
February 20, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28217557/regulation-of-antimicrobial-peptides-in-aedes-aegypti-aag2-cells
#12
Rudian Zhang, Yibin Zhu, Xiaojing Pang, Xiaoping Xiao, Renli Zhang, Gong Cheng
Antimicrobial peptides (AMPs) are an important group of immune effectors that play a role in combating microbial infections in invertebrates. Most of the current information on the regulation of insect AMPs in microbial infection have been gained from Drosophila, and their regulation in other insects are still not completely understood. Here, we generated an AMP induction profile in response to infections with some Gram-negative, -positive bacteria, and fungi in Aedes aegypti embryonic Aag2 cells. Most of the AMP inductions caused by the gram-negative bacteria was controlled by the Immune deficiency (Imd) pathway; nonetheless, Gambicin, an AMP gene discovered only in mosquitoes, was combinatorially regulated by the Imd, Toll and JAK-STAT pathways in the Aag2 cells...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28216635/floating-of-the-lobes-of-mosquito-aedes-togoi-larva-for-respiration
#13
Seung Chul Lee, Jun Ho Kim, Sang Joon Lee
Mosquito (Aedes togoi) larva has to float its siphon on the water surface to breathe air. To elucidate the floating mechanism of the siphon, morphological structures, especially the flap-like lobes and spiracle of the siphon, were observed. Wettability and dynamic behavior of the lobes on the water surface were also experimentally examined. The lobes formed a hollow cone shape under water and expanded on the water surface. The spiracle was located at the base of the cone. The lobes exhibited hydrophobic wettability...
February 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28215858/molecular-survey-of-dirofilaria-immitis-and-dirofilaria-repens-by-new-real-time-taqman-%C3%A2-pcr-assay-in-dogs-and-mosquitoes-diptera-culicidae-in-corsica-france
#14
Djamel Tahir, Fadi Bittar, Hélène Barré-Cardi, Doudou Sow, Mustapha Dahmani, Oleg Mediannikov, Didier Raoult, Bernard Davoust, Philippe Parola
Dirofilaria immitis and D. repens are filarioid nematodes of animals and humans, transmitted by the bite of infected mosquitoes. Domestic and wild canids are a major natural host and reservoir for these parasites. In this study, we designed a duplex real-time PCR protocol targeting the mitochondrial cytochrome c oxidase subunit I (COI) gene, detecting both D. immitis and D. repens using two primer pairs and two Dirofilaria-specific hydrolysable probes. The sensitivity and specificity of the primers and probes were tested in both experimental and naturally infected samples...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215188/high-school-cardiac-emergency-response-plans-and-sudden-cardiac-death-in-the-young
#15
Michelle J White, Emefah C Loccoh, Monica M Goble, Sunkyung Yu, Folafoluwa O Odetola, Mark W Russell
: Introduction Sudden cardiac death (SCD) is responsible for 5%-10% of all deaths among children 5-19 years-of-age. The incidence of SCD in youth in Michigan (USA) and nationwide is higher in racial/ethnic minorities and in certain geographic areas. School cardiac emergency response plans (CERPs) increase survival after cardiac arrest. However, school cardiac emergency preparedness remains variable. Studying population-level factors associated with school cardiac emergency preparedness and incidence of SCD in the young may improve understanding of disparities in the incidence of SCD...
February 20, 2017: Prehospital and Disaster Medicine
https://www.readbyqxmd.com/read/28213320/comparative-analysis-of-mosquito-diptera-culicidae-aedes-aegypti-liston-responses-to-the-insecticide-temephos-and-plant-derived-essential-oil-derived-from-piper-betle-l
#16
Prabhakaran Vasantha-Srinivasan, Sengottayan Senthil-Nathan, Athirstam Ponsankar, Annamalai Thanigaivel, Edward-Sam Edwin, Selvaraj Selin-Rani, Muthiah Chellappandian, Venkatraman Pradeepa, Jalasteen Lija-Escaline, Kandaswamy Kalaivani, Wayne B Hunter, Veeramuthu Duraipandiyan, Naif Abdullah Al-Dhabi
Resistance to treatments with Temephos or plant derived oil, Pb-CVO, between a field collected Wild Strain (WS) and a susceptible Laboratory Strain (LS) of Ae. aegypti were measured. The Temephos (0.1mg/L) showed the greatest percentage of mosquito mortality compared to Pb-CVO (1.5mg/L) in LS Ae. aegypti. However, WS Ae. aegypti was not significantly affected by Temephos (0.1mg/L) treatment compare to the Pb-CVO (1.5mg/L). However, both strains (LS and WS) when treated with Pb-CVO (1.5mg/L) displayed steady larval mortality rate across all instars...
February 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28212379/distribution-and-abundance-of-key-vectors-of-rift-valley-fever-and-other-arboviruses-in-two-ecologically-distinct-counties-in-kenya
#17
Rosemary Sang, Samwel Arum, Edith Chepkorir, Gladys Mosomtai, Caroline Tigoi, Faith Sigei, Olivia Wesula Lwande, Tobias Landmann, Hippolyte Affognon, Clas Ahlm, Magnus Evander
BACKGROUND: Rift Valley fever (RVF) is a mosquito-borne viral zoonosis of ruminants and humans that causes outbreaks in Africa and the Arabian Peninsula with significant public health and economic consequences. Humans become infected through mosquito bites and contact with infected livestock. The virus is maintained between outbreaks through vertically infected eggs of the primary vectors of Aedes species which emerge following rains with extensive flooding. Infected female mosquitoes initiate transmission among nearby animals, which amplifies virus, thereby infecting more mosquitoes and moving the virus beyond the initial point of emergence...
February 17, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28212349/household-dengue-prevention-interventions-expenditures-and-barriers-to-aedes-aegypti-control-in-machala-ecuador
#18
Naveed Heydari, David A Larsen, Marco Neira, Efraín Beltrán Ayala, Prissila Fernandez, Jefferson Adrian, Rosemary Rochford, Anna M Stewart-Ibarra
The Aedes aegypti mosquito is an efficient vector for the transmission of Zika, chikungunya, and dengue viruses, causing major epidemics and a significant social and economic burden throughout the tropics and subtropics. The primary means of preventing these diseases is household-level mosquito control. However, relatively little is known about the economic burden of Ae. aegypti control in resource-limited communities. We surveyed residents from 40 households in a high-risk community at the urban periphery in the city of Machala, Ecuador, on dengue perceptions, vector control interventions, household expenditures, and factors influencing purchasing decisions...
February 16, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208855/dengue-an-analysis-of-epidemiological-pattern-over-a-six-year-period
#19
Nidhi Singla, Preeti Chaudhary, Monika Thakur, Jagdish Chander
INTRODUCTION: Dengue is an arboviral infection transmitted among humans by Aedes aegypti, the urban vector and Aedes albopictus as a maintenance vector in sub-urban and rural areas. The diagnosis is routinely established by detection of NS1 antigen and/or by IgM antibodies testing. Dengue infects 50-100 million cases per year worldwide with atleast half million serious cases needing hospitalization. Therefore, it is necessary to keep the surveillance ongoing to timely look out for changes occurring in disease pattern over a geographical area...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28207332/leaking-containers-success-and-failure-in-controlling-the-mosquito-aedes-aegypti-in-brazil
#20
Ilana Löwy
In 1958, the Pan American Health Organization declared that Brazil had successfully eradicated the mosquito Aedes aegypti, responsible for the transmission of yellow fever, dengue fever, chikungunya, and Zika virus. Yet in 2016 the Brazilian minister of health described the situation of dengue fever as "catastrophic." Discussing the recent epidemic of Zika virus, which amplified the crisis produced by the persistence of dengue fever, Brazil's president declared in January 2016 that "we are in the process of losing the war against the mosquito Aedes aegypti...
February 16, 2017: American Journal of Public Health
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