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https://www.readbyqxmd.com/read/28636447/emerging-viral-infections-in-pakistan-issues-concerns-and-future-prospects
#1
Ali Talha Khalil, Muhammad Ali, Faouzia Tanveer, Muhammad Ovais, Muhammad Idrees, Zabta Khan Shinwari, James E Hollenbeck
Emerging infectious diseases pose a serious threat to public health security; this is especially true in the underdeveloped world because of limited resources to combat them. These emerging pathogens are characterized by a novel mode of pathogenesis and, in some cases, a broad host range. Over the past few decades, Pakistan has suffered a great deal from infectious diseases such as dengue, Crimean-Congo fever, hepatitis, measles, and polio. Changing climate conditions, environmental degradation, global warming, loss of biodiversity, and other ecological determinants have a direct effect on these diseases and result in the emergence and reemergence of infectious entities...
May 2017: Health Security
https://www.readbyqxmd.com/read/28636161/infinity-sperm-storage-the-gift-that-keeps-on-giving
#2
Gauthier Schang, Beatriz Fernandez-Fuertes, Samantha C Lean, Alexandra L Nguyen, Osvaldo Bogado Pascottini
Female Drosophila retain sperm for up to two weeks post-copulation in a network of storage organs includng the bursa, the seminal receptacle, and the spermathecae. This image shows the seminal receptacle of a Drosophila melanogaster female, 2-hrs post-copulation between a LHM (wild-type) female with a Protamine B (green), β-Tubulin (blue) fluorescently tagged male, whose sperm can be visualized within the female. This 'infinity' structure of the seminal receptacle resembles the tubular coil that allows for the storage of very long sperm relative to female body size -up to 20 times the length of the female in some Drosophila species...
June 21, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28616499/emergence-of-wesselsbron-virus-among-black-rat-and-humans-in-eastern-senegal-in-2013
#3
Moussa M Diagne, Martin Faye, Oumar Faye, Abdourahmane Sow, Fanny Balique, Mbacké Sembène, Laurent Granjon, Pascal Handschumacher, Ousmane Faye, Mawlouth Diallo, Amadou A Sall
Wesselsbron disease is a neglected mosquito transmitted Flavivirus infection that causes abortions and has teratogenic effects on sheep and cattle in Africa. Human can also be infected. The detection of human or animal cases is complicated by the non-specific symptoms close to Rift Valley Fever (RVF) in domestic livestock species or Dengue like syndrome in humans. Then, these detections are usually made during RVF investigations in sheep. These domestic animals should take a role in the life cycle of the virus but some evidences of Wesselsbron virus (WSLV) presence in wild animals suggest that the latter may be involved in the virus maintenance in nature...
June 2017: One Health
https://www.readbyqxmd.com/read/28615658/serotyping-dengue-virus-with-isothermal-amplification-and-a-portable-sequencer
#4
Junya Yamagishi, Lucky R Runtuwene, Kyoko Hayashida, Arthur E Mongan, Lan Anh Nguyen Thi, Linh Nguyen Thuy, Cam Nguyen Nhat, Kriengsak Limkittikul, Chukiat Sirivichayakul, Nuankanya Sathirapongsasuti, Martin Frith, Wojciech Makalowski, Yuki Eshita, Sumio Sugano, Yutaka Suzuki
The recent development of a nanopore-type portable DNA sequencer has changed the way we think about DNA sequencing. We can perform sequencing directly in the field, where we collect the samples. Here, we report the development of a novel method to detect and genotype tropical disease pathogens, using dengue fever as a model. By combining the sequencer with isothermal amplification that only requires a water bath, we were able to amplify and sequence target viral genomes with ease. Starting from a serum sample, the entire procedure could be finished in a single day...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28613285/dengue-hemorrhagic-fever-in-the-northwest-of-mexico-a-two-decade-analysis
#5
Vania Serrano-Pinto, Manuel Moreno-Legorretara
BACKGROUND: In Baja California Sur, Mexico, there are no records of dengue hemorrhagic fever in the state before 1995. Until now, there have been no published reports on the incidence rate. OBJECTIVE: To assess the incidence rate of dengue hemorrhagic fever in Baja California Sur in the last two decades. METHODS: We analyzed data on the total number of cases in the general population, incidence rate, age groups, gender, serotypes, and mortality data...
May 2017: Revista de Investigación Clínica; Organo del Hospital de Enfermedades de la Nutrición
https://www.readbyqxmd.com/read/28612239/dengue-hemorrhagic-fever-a-state-of-the-art-review-focused-in-pulmonary-involvement
#6
REVIEW
Renata Rocha de Almeida, Bernardo Paim, Solange Artimos de Oliveira, Arthur Soares Souza, Antônio Carlos Portugal Gomes, Dante Luiz Escuissato, Gláucia Zanetti, Edson Marchiori
Dengue fever is an arboviral disease transmitted to humans through the bites of infected female Aedes mosquitoes. Dengue virus is a member of the Flaviviridae family, and human infection can be caused by any of the four antigenically distinct serotypes (DENV 1-4). The infection has become recognized as the most important and prevalent arboviral disease in humans, endemic in almost 100 countries worldwide. Nearly 3 billion people live in areas with transmission risk. Autochthonous transmission of the virus in previously disease-free areas, increased incidence in endemic areas, and epidemic resurgence in controlled regions could increase the risk of contracting more severe forms of the disease, such as dengue hemorrhagic fever (DHF)/dengue shock syndrome (DSS)...
June 13, 2017: Lung
https://www.readbyqxmd.com/read/28603785/patterns-of-gall-bladder-wall-thickening-in-dengue-fever-a-mirror-of-the-severity-of-disease
#7
Jitendra Premjibhai Parmar, Chander Mohan, Maulik Vora
BACKGROUND: Dengue fever is a major public health problem with an increased incidence in recent years. Gall bladder wall thickening has been reported as one of the most common findings in dengue fever. There is a paucity of literature regarding the various patterns of gall bladder wall thickening in dengue fever and their significance in predicting the severity of disease. METHODOLOGY AND SIGNIFICANT FINDINGS: Out of 93 seropositive patients included in the study, 54 patients with dengue fever had gall bladder wall thickening...
April 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28599813/google-dengue-trends-an-indicator-of-epidemic-behavior-the-venezuelan-case
#8
Ricardo A Strauss, Julio S Castro, Ralf Reintjes, Jaime R Torres
INTRODUCTION: Dengue Fever is a neglected increasing public health thread. Developing countries are facing surveillance system problems like delay and data loss. Lately, the access and the availability of health-related information on the internet have changed what people seek on the web. In 2004 Google developed Google Dengue Trends (GDT) based on the number of search terms related with the disease in a determined time and place. The goal of this review is to evaluate the accuracy of GDT in comparison with traditional surveillance systems in Venezuela...
August 2017: International Journal of Medical Informatics
https://www.readbyqxmd.com/read/28598355/ecological-niche-modeling-identifies-fine-scale-areas-at-high-risk-of-dengue-fever-in-the-pearl-river-delta-china
#9
Qiaoxuan Li, Hongyan Ren, Lan Zheng, Wei Cao, An Zhang, Dafang Zhuang, Liang Lu, Huixian Jiang
Dengue fever (DF) is one of the most common and rapidly spreading mosquito-borne viral diseases in tropical and subtropical regions. In recent years, this imported disease has posed a serious threat to public health in China, especially in the Pearl River Delta (PRD). Although the severity of DF outbreaks in the PRD is generally associated with known risk factors, fine scale assessments of areas at high risk for DF outbreaks are limited. We built five ecological niche models to identify such areas including a variety of climatic, environmental, and socioeconomic variables, as well as, in some models, extracted principal components...
June 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28598067/is-this-the-right-direction-for-dengue-fever-research-in-india
#10
Sunitha M Daniel, Abraham M Varghese
No abstract text is available yet for this article.
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28598047/awareness-and-outcome-of-changing-trends-in-clinical-profile-of-dengue-fever-a-retrospective-analysis-of-dengue-epidemic-from-january-to-december-2014-at-a-tertiary-care-hospital
#11
Jitendra Singh, Anju Dinkar, Virendra Atam, D Himanshu, Kamlesh Kumar Gupta, Kauser Usman, Ravi Misra
BACKGROUND: Dengue fever is caused by mosquito-borne arboviral infection that has become a public health concern globally. Recently, an alarming rise of dengue has also been seen in India. Hence the study was undertaken to know profile of clinical manifestations and laboratory findings during the evolution of dengue fever. METHODS: In this study, retrospective data analysis was done in 216 seropositive dengue patients admitted between January to December 2014 in department of medicine at a north Indian care hospital...
May 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/28596655/a-correlation-of-the-platelet-count-with-d-dimer-levels-as-an-indicator-for-component-therapy-in-children-with-dengue-hemorrhagic-fever
#12
Arthi Sridhar, B M Sunil Kumar, Aarathi Rau, A T K Rau
Dengue Fever (DF) may evolve into two life threatening forms-Dengue Hemorrhagic Fever (DHF) and Dengue Shock Syndrome (DSS). DHF is associated with increased vascular permeability and plasma leakage causing thrombocytopenia and loss of clotting factors into the third space and may result in bleeding initially due to thrombocytopenia and later due to disseminated intravascular coagulation (DIC), often as a terminal event. Prompt recognition and treatment of minor bleeds in DF children with incipient DIC with component therapy may be associated with improved survival while failure to do so is usually catastrophic...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28591408/decrease-in-dengue-virus-2-infection-and-reduction-of-cytokine-chemokine-production-by-uncaria-guianensis-in-human-hepatocyte-cell-line-huh-7
#13
Cíntia da Silva Mello, Ligia Maria Marino Valente, Thiago Wolff, Raimundo Sousa Lima-Junior, Luciana Gomes Fialho, Cintia Ferreira Marinho, Elzinandes Leal Azeredo, Luzia Maria Oliveira-Pinto, Rita de Cássia Alves Pereira, Antonio Carlos Siani, Claire Fernandes Kubelka
BACKGROUND: Dengue fever may present hemorrhages and cavitary effusions as result of exacerbated immune responses. We investigated hydro-alcoholic extracts from leaves (UGL) and bark (UGB) of the medicinal species Uncaria guinanensis with respect to antiviral effects in Dengue virus (DENV) infection and in immunological parameters associated with in vivo physiopathological features. METHODS: Chemical profiles from UGB or UGL were compared in thin layer chromatography and 1H nuclear magnetic resonance using flavonoid compounds and a pentacyclic oxindole alkaloid-enriched fraction as references...
June 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28590221/evaluation-of-pyriproxyfen-dissemination-via-aedes-albopictus-from-a-point-source-larvicide-application-in-northeast-florida
#14
Aaron M Lloyd, Muhammad Farooq, Alden S Estep, Rui-De Xue, Daniel L Kline
The Asian tiger mosquito, Aedes albopictus , ranks among the most important vectors of dengue fever, Zika virus, and chikungunya virus. With no specific medications or vaccines available, vector control is the only way to combat these diseases. Autodissemination of the insect growth regulator pyriproxyfen (NyGuard®) from a point-source treatment was evaluated in field settings in northeast Florida. The objective of this study was to investigate the possibility of pyriproxyfen dissemination from a treatment site to nontreated oviposition sites via the skip oviposition behavior of Ae...
June 2017: Journal of the American Mosquito Control Association
https://www.readbyqxmd.com/read/28587513/delayed-care-seeking-and-outcome-of-dengue-infected-patients
#15
Nantawan Wongchidwan, Yupaporn Wattanagoon, Viravarn Luvira, Sopon Iamsirithaworn
A retrospective cohort study was conducted to assess the effect of early (1-4 days after fever onset) and delayed (≥5 days) care-seeking on outcomes of dengue-infected patients. We used data of adult dengue-infected patients treated in Bangkok, Thailand between June 2012 and September 2013. There were 110 patients in the early care-seeking group and 100 in the delayed care-seeking group. There were no deaths. Bleeding complications were not significantly different between the two groups while the latter group had a significantly higher rate of admission compared with the former (98% versus 91...
January 1, 2017: Tropical Doctor
https://www.readbyqxmd.com/read/28586575/and-yet-one-more-adds-to-the-sorrow
#16
EDITORIAL
Muhammad Zeeshan Haroon, Mohammad Salim Wazir
Chikungunya is one of the vector borne diseases. It is caused by Chikungunya virus, an alpha virus, spread by the bite of female Aedes mosquito. Chikungunya is a non-fatal, self-limiting Dengue like illness which is characterized by high grade fever, headache, skin rash, and prolong debilitating arthralgia mostly affecting peripheral small joints. Treatment is usually supportive for the symptoms which includes antipyretic, analgesics and anti-inflammatory drugs. Current outbreak in Karachi is the first declared outbreak in Pakistan...
October 2016: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28583207/knockdown-resistance-kdr-of-the-voltage-gated-sodium-channel-gene-of-aedes-aegypti-population-in-denpasar-bali-indonesia
#17
Penny Humaidah Hamid, Joko Prastowo, Anis Widyasari, Anja Taubert, Carlos Hermosilla
BACKGROUND: Aedes aegypti is the main vector of several arthropod-borne viral infections in the tropics profoundly affecting humans, such as dengue fever (DF), West Nile (WN), chikungunya and more recently Zika. Eradication of Aedes still largely depends on insecticides, which is the most cost-effective strategy, and often inefficient due to resistance development in exposed Aedes populations. We here conducted a study of Ae. aegypti resistance towards several insecticides regularly used in the city of Denpasar, Bali, Indonesia...
June 5, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28577370/viruses-vector-control-proposal-genus-aedes-emphasis
#18
REVIEW
Nelson Nogueira Reis, Alcino Lázaro da Silva, Elma Pereira Guedes Reis, Flávia Chaves E Silva, Igor Guedes Nogueira Reis
The dengue fever is a major public health problem in the world. In Brazil, in 2015, there were 1,534,932 cases, being 20,320 cases of severe form, and 811 deaths related to this disease. The distribution of Aedes aegypti, the vector, is extensive. Recently, Zika and Chikungunya viruses had arisen, sharing the same vector as dengue and became a huge public health issue. Without specific treatment, it is urgently required as an effective vector control. This article is focused on reviewing vector control strategies, their effectiveness, viability and economical impact...
May 31, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28577363/international-workshop-on-insecticide-resistance-in-vectors-of-arboviruses-december-2016-rio-de-janeiro-brazil
#19
Vincent Corbel, Dina M Fonseca, David Weetman, João Pinto, Nicole L Achee, Fabrice Chandre, Mamadou B Coulibaly, Isabelle Dusfour, John Grieco, Waraporn Juntarajumnong, Audrey Lenhart, Ademir J Martins, Catherine Moyes, Lee Ching Ng, Kamaraju Raghavendra, Hassan Vatandoost, John Vontas, Pie Muller, Shinji Kasai, Florence Fouque, Raman Velayudhan, Claire Durot, Jean-Philippe David
Vector-borne diseases transmitted by insect vectors such as mosquitoes occur in over 100 countries and affect almost half of the world's population. Dengue is currently the most prevalent arboviral disease but chikungunya, Zika and yellow fever show increasing prevalence and severity. Vector control, mainly by the use of insecticides, play a key role in disease prevention but the use of the same chemicals for more than 40 years, together with the dissemination of mosquitoes by trade and environmental changes, resulted in the global spread of insecticide resistance...
June 2, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28577343/de-novo-rna-synthesis-catalyzed-by-the-zika-virus-rna-polymerase-domain
#20
Christina Calmels, Michel Ventura, Cindy Aknin, Mathieu Métifiot, Marie-Line Andreola
Mosquito- and tick-borne pathogens including Chikungunya, Dengue, Japanese encephalitis, West Nile, Yellow fever and Zika virus, represent a new economic and public health challenge. In the absence of effective vaccines and specific therapies, only supportive regimens are administrated for most of these infections. Thus, the development of a targeted therapy is mandatory to stop the rapid progression of these pathogens and preoccupant associated burdens such as Guillain-Barre syndrome, microcephaly. For this, it is essential to develop biochemical tools to help study and target key viral enzymes involved in replication such as helicase complexes, methyl-transferases and RNA-dependent RNA polymerases...
June 2, 2017: Scientific Reports
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