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Haemorrhagic fever

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https://www.readbyqxmd.com/read/28437586/pathogenesis-of-vascular-leak-in-dengue-virus-infection
#1
REVIEW
Gathsaurie Neelika Malavige, Graham S Ogg
Endothelial dysfunction leading to vascular leak is the hallmark of severe dengue. Vascular leak typically becomes clinically evident during 3-6 days since the onset of illness, which is known as the critical phase. This critical phase follows the period of peak viraemia, and lasts for 24 to 48 hours and usually shows rapid and complete reversal, suggesting it is likely to occur as a result of inflammatory mediators, rather than infection of the endothelium. Cytokines such as TNFα, which are known to be elevated in the critical phase of dengue, are likely to be contributing factors...
April 24, 2017: Immunology
https://www.readbyqxmd.com/read/28424792/sustained-high-levels-of-both-total-and-high-molecular-weight-adiponectin-in-plasma-during-the-convalescent-phase-of-haemorrhagic-fever-with-renal-syndrome-are-associated-with-disease-severity
#2
Kang Tang, Chunmei Zhang, Yusi Zhang, Yun Zhang, Ran Zhuang, Boquan Jin, Ying Ma
Haemorrhagic fever with renal syndrome (HFRS) is characterised by an uncontrolled immune response that causes vascular leakage. Adiponectin (APN) is an adipocytokine involved in prorevascularisation and immunomodulation. To investigate the possible effects of APN in the pathogenesis of HFRS, total and high molecular weight (HMW) APN levels in the plasma of patients with HFRS were quantified using enzyme-linked immunosorbent assay (ELISA). Compared with those in healthy controls, the plasma total and HMW APN levels in patients were elevated to different degrees from the fever onset and remained high at the convalescent phase...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28424030/expanded-dengue-syndrome-three-concomitant-uncommon-presentations-in-the-same-patient
#3
Ahmad Mursel Anam, Raihan Rabbani, Farzana Shumy
We report a case of expanded dengue syndrome, where three uncommon presentations occurred concomitantly. A patient with dengue haemorrhagic fever presented initially with acute acalculous cholecystitis along with acute pancreatitis, but later on, during resolution of pancreatitis and cholecystitis, developed pancytopenia, most likely due to haemophagocytic syndrome. Such presentations, besides being rare themselves, have not been reported to occur concomitantly, in the same patient, during the same disease process...
April 2017: Tropical Doctor
https://www.readbyqxmd.com/read/28403751/management-of-dengue-in-australian-travellers-a-retrospective-multicentre-analysis
#4
MULTICENTER STUDY
Alex Yc Tai, Sarah L McGuinness, Roselle Robosa, David Turner, G Khai Lin Huang, Karin Leder, Tony M Korman, Irani Thevarajan, Andrew J Stewardson, Alexander A Padiglione, Douglas F Johnson
OBJECTIVES: To describe the epidemiology, clinical and laboratory features and outcomes of dengue in returned Australian travellers, applying the revised WHO dengue classification (2009) to this population. DESIGN, SETTING AND PARTICIPANTS: Retrospective case series analysis of confirmed dengue cases hospitalised at one of four Australian tertiary hospitals, January 2012 - May 2015. MAIN OUTCOME MEASURES: Clinical features, laboratory findings and outcomes of patients with dengue; dengue classification according to 2009 WHO guidelines...
April 17, 2017: Medical Journal of Australia
https://www.readbyqxmd.com/read/28402024/marburg-virus-like-particles-produced-in-insect-cells-induce-neutralizing-antibodies-in-rhesus-macaques
#5
Weiwei Gai, Xuexing Zheng, Chong Wang, Yongkun Zhao, Qi Wang, Hualei Wang, Gary Wong, Ying Xie, Haijun Wang, Zengguo Cao, Na Feng, Hang Chi, Tiecheng Wang, Yuwei Gao, Junjie Shan, Songtao Yang, Xianzhu Xia
Marburg virus (MARV), which is one of the most virulent agents in the world, causes lethal haemorrhagic fever in humans and nonhuman primates (NHPs) with a mortality rate of up to 90%. Currently, there is no effective treatment or approved vaccine for MARV for human use to control disease outbreak and spread. Virus-like particles (VLPs), which are morphologically identical to the native infectious virus particle, are efficacious as vaccines against many viruses, including human papilloma virus (HPV), porcine circovirus (PCV) type 2 and hepatitis B virus (HBV)...
April 12, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28397519/emerging-vector-borne-diseases-in-dromedaries-in-tunisia-west-nile-bluetongue-epizootic-haemorrhagic-disease-and-rift-valley-fever
#6
Thameur B Hassine, Jihane Amdouni, Federica Monaco, Giovanni Savini, Soufien Sghaier, Imed B Selimen, Walid Chandoul, Khaled B Hamida, Salah Hammami
A total of 118 sera were collected during 2016 from two groups of dromedaries from Kebili and Medenine governorates in the south of Tunisia. The aim of this study was to provide the first serological investigation of four emerging vector-borne diseases in two groups of dromedaries in Tunisia. Sera were tested by ELISA and serum neutralisation test to identify West Nile virus (WNV), bluetongue virus (BTV), epizootic haemorrhagic disease virus (EHDV) and Rift Valley fever virus (RVFV). In the first group, the seroprevalence for BTV was 4...
March 31, 2017: Onderstepoort Journal of Veterinary Research
https://www.readbyqxmd.com/read/28396469/the-ebola-outbreak-2013-2016-old-lessons-for-new-epidemics
#7
REVIEW
Cordelia E M Coltart, Benjamin Lindsey, Isaac Ghinai, Anne M Johnson, David L Heymann
Ebola virus causes a severe haemorrhagic fever in humans with high case fatality and significant epidemic potential. The 2013-2016 outbreak in West Africa was unprecedented in scale, being larger than all previous outbreaks combined, with 28 646 reported cases and 11 323 reported deaths. It was also unique in its geographical distribution and multicountry spread. It is vital that the lessons learned from the world's largest Ebola outbreak are not lost. This article aims to provide a detailed description of the evolution of the outbreak...
May 26, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28396468/a-review-of-phase-i-trials-of-ebola-virus-vaccines-what-can-we-learn-from-the-race-to-develop-novel-vaccines
#8
REVIEW
Teresa Lambe, Georgina Bowyer, Katie J Ewer
Sporadic outbreaks of Ebola virus infection have been documented since the mid-Seventies and viral exposure can lead to lethal haemorrhagic fever with case fatalities as high as 90%. There is now a comprehensive body of data from both ongoing and completed clinical trials assessing various vaccine strategies, which were rapidly advanced through clinical trials in response to the 2013-2016 Ebola virus disease (EVD) public health emergency. Careful consideration of immunogenicity post vaccination is essential but has been somewhat stifled because of the wide array of immunological assays and outputs that have been used in the numerous clinical trials...
May 26, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28396467/offering-patients-more-how-the-west-africa-ebola-outbreak-can-shape-innovation-in-therapeutic-research-for-emerging-and-epidemic-infections
#9
REVIEW
Amanda M Rojek, Peter W Horby
Although, after an epidemic of over 28 000 cases, there are still no licensed treatments for Ebola virus disease (EVD), significant progress was made during the West Africa outbreak. The pace of pre-clinical development was exceptional and a number of therapeutic clinical trials were conducted in the face of considerable challenges. Given the on-going risk of emerging infectious disease outbreaks in an era of unprecedented population density, international travel and human impact on the environment it is pertinent to focus on improving the research and development landscape for treatments of emerging and epidemic-prone infections...
May 26, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28384938/misoprostol-induced-convulsion-a-rare-side-effect-of-misoprostol
#10
Nalini Sharma, Rituparna Das, Santa Singh Ahanthem, Kalyani Reddy
Misoprostol, a synthetic prostaglandin E1 has wider application in obstetrics gynaecology. It has been recommended in the prophylaxis and treatment of Post Partum Haemorrhage (PPH) by Federation of Obstetrics and Gynaecology (FIGO), World Health Organisation (WHO) and American College of Obstetrics and Gynaecology (ACOG). It is a very safe drug associated with transient side-effects like fever, chills, nausea, vomiting, diarrhoea and abdominal pain. In the present case report patient had an unusual side effect of hyperpyrexia and convulsion after use of misoprostol for prophylaxis against PPH...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28375542/emergence-of-zika-virus-epidemic-and-the-national-response-in-jamaica
#11
K R Webster-Kerr, Cdc Christie, A Grant, D Chin, H Burrowes, K Clarke, I Wellington, K Shaw, W De La Haye
Background: Jamaica, along with the Americas, experienced major epidemics of arboviral diseases transmitted by the Aedes aegypti mosquito in recent years. These include dengue fever in 2012, Chikungunya fever in 2014 and Zika virus infection (ZIKV) in 2016. We present the emergence of the ZIKV epidemic in Jamaica and outline the national response. Methods: The Ministry of Health's preparedness included: heightened surveillance, clinical management guidance, vector control and management, laboratory capacity strengthening, training and staffing, risk communication and public education, social mobilization, inter-sectoral collaboration, resource mobilization and international cooperation...
September 26, 2016: West Indian Medical Journal
https://www.readbyqxmd.com/read/28352053/spontaneous-iliopsoas-haematoma-in-a-patient-with-dengue-haemorrhagic-fever-dhf-a-case-report
#12
Arvind Kumar, Saikat Mondal, Prayas Sethi, Smita Manchanda, Ashutosh Biswas, Naveet Wig
No abstract text is available yet for this article.
January 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28352047/larvicidal-activity-of-ottonia-anisum-metabolites-against-aedes-aegypti-a-potential-natural-alternative-source-for-mosquito-vector-control-in-brazil
#13
André M Marques, Leosvaldo S Velozo, Michelle A Carvalho, Michele T Serdeiro, Nildimar A Honório, Maria Auxiliadora C Kaplan, Marise Maleck
BACKGROUND & OBJECTIVES: Aedes aegypti mosquito is the principal vector of the viruses responsible for urban yellow fever, dengue, dengue haemorrhagic fever, as well as Zika and chikungunya in Brazil. The present study was aimed to investigate the insecticidal potential of the extract and fractions of Ottonia anisum, along with special metabolites isolated from it, as natural alternatives against larvae (L3) of Ae. aegypti, vector of potentially deadly tropical infections in Brazil. METHODS: The plant species O...
January 2017: Journal of Vector Borne Diseases
https://www.readbyqxmd.com/read/28345293/detection-of-zaire-ebolavirus-in-swine-assay-development-and-optimization
#14
B S Pickering, B Collignon, G Smith, P Marszal, G Kobinger, H M Weingartl
Ebolaviruses (family Filoviridae, order Mononegavirales) cause often fatal, haemorrhagic fever in primates including humans. Pigs have been identified as a species susceptible to Reston ebolavirus (RESTV) infection, with indicated transmission to humans in the Philippines; however, their role during Ebola outbreaks in Africa needs to be clarified. To perform surveillance studies, detection of ebolavirus requires a prerequisite validation of viral RNA and antibody detection methods in swine samples. These diagnostic tests also need to be suitable for deployment to low-level containment laboratories...
March 27, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28335777/the-reasons-why-pakistan-might-be-at-high-risk-of-crimean-congo-haemorrhagic-fever-epidemic-a-scoping-review-of-the-literature
#15
REVIEW
Muhammad Atif, Anum Saqib, Raazeyah Ikram, Muhammad Rehan Sarwar, Shane Scahill
Pakistan has faced a number of significant healthcare challenges over the past decade. In 2000, one of these events - a deadly epidemic of Crimean Congo Haemorrhagic Fever (CCHF) - struck Pakistan. The people of Pakistan are at a very high risk of acquiring CCHF, due to a number of factors which emerge from a scoping review of the literature. First, the underdeveloped healthcare system of the country is currently not prepared to cope with challenges of this nature. Healthcare professionals and medical institutes are not sufficiently equipped to properly diagnose, manage and prevent CCHF...
March 23, 2017: Virology Journal
https://www.readbyqxmd.com/read/28318536/chromobacterium-violaceum-infection-in-a-horse
#16
Márcia Elisa Hammerschmitt, Veronica Machado Rolim, Gustavo Geraldo Medina Snel, Franciele Maboni Siqueira, David Driemeier, Saulo Petinatti Pavarini
Chromobacterium violaceum is an opportunistic pathogen of mammals that produces characteristic violet pigment in bacterial culture. We report pneumonia and septicaemia caused by C. violaceum in a horse. Necropsy examination was performed on a 3-year-old Quarter Horse stallion with a history of recurrent episodes of pneumonia, fever, dyspnoea and sanguineous nasal discharge. The lungs were not collapsed, but they contained dark red foci mixed with white areas, and multiple nodules of firm consistency. Within the liver and kidney there were randomly distributed, multifocal, white pinpoint lesions (0...
March 16, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28304014/viral-haemorrhagic-fever-a-case-of-systematic-neglect
#17
Zafir Zohab Hussain Khan, Sayed Mustafa Mahmood Shah
No abstract text is available yet for this article.
March 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28299919/spontaneous-soft-tissue-haemorrhage-in-systemic-lupus-erythematosus
#18
M C Abdulla
Diversity in clinical presentations and complications of systemic lupus erythematosus (SLE) make the diagnosis and management challenging. The mechanisms of haemorrhagic manifestations in SLE have not been well elucidated. A 47-year-old woman with no comorbidities was admitted after suffering fatigue and low grade fever for six months. She had bilateral soft tissue haemorrhage over the forearm and intra retinal haemorrhages. She was assessed and diagnosed as having SLE based on positive antinuclear antibody, strongly positive anti double stranded DNA, thrombocytopenia and low C3 and C4 levels...
December 31, 2016: Reumatismo
https://www.readbyqxmd.com/read/28295179/platelets-and-infections-in-the-resource-limited-countries-with-a-focus-on-malaria-and-viral-haemorrhagic-fevers
#19
REVIEW
Jecko Thachil
Infections continue to cause a high incidence of mortality and morbidity in resource-poor nations. Although antimicrobial therapy has aided mostly in dealing with the pathogenic micro-organisms themselves, the collateral damage caused by the infections continue to cause many deaths. Intensive care support and manipulation of the hosts' abnormal response to the infection have helped to improve mortality in well-resourced countries. But, in those areas with limited resources, this is not yet the case and simpler methods of diagnosis and interventions are required...
March 14, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28284213/mathematical-modelling-and-a-systems-science-approach-to-describe-the-role-of-cytokines-in-the-evolution-of-severe-dengue
#20
S D Pavithra Jayasundara, S S N Perera, Gathsaurie Neelika Malavige, Saroj Jayasinghe
BACKGROUND: Dengue causes considerable morbidity and mortality in Sri Lanka. Inflammatory mediators such as cytokines, contribute to its evolution from an asymptotic infection to severe forms of dengue. The majority of previous studies have analysed the association of individual cytokines with clinical disease severity. In contrast, we view evolution to Dengue Haemorrhagic Fever as the behaviour of a complex dynamic system. We therefore, analyse the combined effect of multiple cytokines that interact dynamically with each other in order to generate a mathematical model to predict occurrence of Dengue Haemorrhagic Fever...
March 11, 2017: BMC Systems Biology
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