Benign bacteria block mosquitoes from transmitting Zika, chikungunya viruses

(University of Wisconsin-Madison) Researchers at the University of Wisconsin-Madison have confirmed that a benign bacterium called Wolbachia pipientis can completely block transmission of Zika virus in Aedes aegypti. Matthew Aliota, a scientist at the UW-Madison School of Veterinary Medicine and first author of the paper, says the bacteria could present a 'novel biological control mechanism,' aiding efforts to stop the spread of Zika virus.
Source: EurekAlert! - Medicine and Health - Category: Global & Universal Source Type: news

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AbstractSouth Texas has experienced local transmission of Zika virus and of other mosquito-borne viruses such as chikungunya virus and dengue virus in the last decades. Using a mosquito surveillance program in the Lower Rio Grande Valley (LRGV) and San Antonio, TX, from 2016 to 2018, we detected the presence of an insect-specific virus, cell fusing agent virus (CFAV), in theAedes aegypti mosquito population. We tested 6,326 females and 1,249 males from the LRGV and 659 females from San Antonio for CFAV by RT-PCR using specific primers. Infection rates varied from 0 to 261 per 1,000 mosquitoes in the LRGV and 115 to 208 per...
Source: Archives of Virology - Category: Virology Source Type: research
The disease is transmitted through the bite of the female Aedes aegypti mosquito, an invasive species that also spreads diseases like yellow fever, Zika and chikungunya.
Source: Health News: - Category: Consumer Health News Source Type: news
In this study, we investigate the genetic variation associated with blocking and use these analyses to generate testable hypotheses surrounding the mechanism of Wolbachia-mediated dengue blocking. From our results, we hypothesize that Wolbachia may block virus replication by increasing the regeneration rate of mosquito cells via the Notch signaling pathway. We also propose that Wolbachia modulates the host’s transcriptional pausing pathway either to prime the host’s anti-viral response or to directly inhibit viral replication.
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Abstract Chloroquine (CQ) and hydroxychloroquine (HCQ) are derivatives of the heterocyclic aromatic compound quinoline. These economical compounds were used as antimalarial agents for many years. Currently, they are used as monotherapy or in conjunction with other therapies for the treatment of autoimmune diseases such as systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), Sjögren's syndrome (SS) and antiphospholipid antibody syndrome (APS). Based on its effects on the modulation of the autophagy process, various clinical studies suggest that CQ and HCQ could be used in combination with other chemo...
Source: Current Pharmaceutical Design - Category: Drugs & Pharmacology Authors: Tags: Curr Pharm Des Source Type: research
We performed an in-depth analysis of the ABC gene family in Aedes aegypti (Diptera: Culicidae), which is an important vector species of arthropod-borne viral infections such as chikungunya, dengue, and Zika. Desp...
Source: BMC Genomics - Category: Genetics & Stem Cells Authors: Tags: Research article Source Type: research
From 2013 to 2015, sanitary authorities reported an increased incidence of Guillain-Barré syndrome (GBS) associated with Zika virus (ZIKV) in French Polynesia, Caribbean, and Brazil.1–3 After the end of ZIKV epidemics, GBS cases where still above the usual limits in countries where the arrival of chikungunya virus (CHIKV) was also a concern.3
Source: Neurology Neuroimmunology and Neuroinflammation - Category: Neurology Authors: Tags: Autoimmune diseases, All Infections, Viral infections, Post-infectious, Guillain-Barre syndrome Clinical/Scientific Notes Source Type: research
After the outbreak in French Polynesia, Zika virus (ZIKV) explosive pandemic occurred in 2015, reports that ZIKV was linked to other diseases, especially neurological complications such as Guillain-Barré Syndrome (GBS), also burst in almost every continent, thereby turning into an international concern. In South America, the highest incidence occurred in Venezuela with approximately 680 cases of GBS after ZIKV infection. Currently, the main roots of this association remain unknown. In this regard, it is thought that the immune system plays a central role in such association through the host protection or even improv...
Source: Current Immunology Reviews - Category: Allergy & Immunology Source Type: research
Aedes aegypti is a primary vector of dengue, chikungunya and Zika infections in India. In the absence of specific drugs or safe and effective vaccines for these infections, their control relies mainly on vector c...
Source: Parasites and Vectors - Category: Microbiology Authors: Tags: Research Source Type: research
gari Alphaviruses are globally distributed and predominately transmitted by mosquitoes. Aedes species are common vectors for the clinically important alphaviruses—Chikungunya, Sindbis, and Ross River (RRV) viruses—with Aedes aegypti also being a vector for the flaviviruses dengue, Yellow Fever, and Zika viruses. Ae. aegypti was putatively implicated in the large 1979–1980 South Pacific Islands outbreak of RRV—the leading cause of arboviral disease in Australia today. The RNA interference (RNAi) defense response in mosquitoes involves a number of small RNAs, with their kinetics in...
Source: Viruses - Category: Virology Authors: Tags: Article Source Type: research
This study consists of the application of a community prevention project. Different surveys and methodological approaches were used. Associations between socio-environmental determinants and knowledge and practices for arboviruses transmission control were estimated by odds ratio. Logistic regression and qualitative techniques were used. Although around 75% of households had an adequate knowledge about arboviruses' origin and transmission, only 30% of them adopted adequate practices. Domestic risk practices were associated with serious deficiencies in water and sanitation services. Furthermore, a perception of greater risk...
Source: Cadernos de Saude Publica - Category: International Medicine & Public Health Authors: Tags: Cad Saude Publica Source Type: research
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