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https://www.readbyqxmd.com/read/28220810/dengue-virus-ns1-protein-activates-immune-cells-via-tlr4-but-not-tlr2-or-tlr6
#1
Naphak Modhiran, Daniel Watterson, Antje Blumenthal, Alan G Baxter, Paul R Young, Katryn J Stacey
The secreted hexameric form of the dengue virus (DENV) non-structural protein 1 (NS1) has recently been shown to elicit inflammatory cytokine release and disrupt endothelial cell monolayer integrity. This suggests that circulating NS1 contributes to the vascular leak that plays a major role in the pathology of dengue haemorrhagic fever and shock. Pathways activated by NS1 are thus of great interest as potential therapeutic targets. Recent works have separately implicated both toll-like receptor 4 (TLR4) and the TLR2/6 heterodimer in immune cell activation by NS1...
February 21, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28209139/stroke-caused-by-an-inflammatory-thrombus-a-case-report
#2
Kai Shan, Wei Guo
BACKGROUND: Stroke is the leading cause of mortality and disability worldwide. Several definite risk factors have been identified for stroke, although infectious factors might also contribute to stroke episodes through increased susceptibility or direct induction. CASE PRESENTATION: A 46-year-old Chinese male initially presented with fever, headache, and impaired memory and developed disturbance of consciousness after admission. A clinical diagnosis of Staphylococcus aureus sepsis, massive cerebral infarction and haemorrhagic transformation (left internal carotid arterial system, inflammatory thrombus) were made based on brain radiography, blood culture and postoperative pathological examinations...
February 16, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28207988/the-role-of-the-unfolded-protein-response-in-dengue-virus-pathogenesis
#3
REVIEW
Nilanka Perera, Joanna L Miller, Nicole Zitzmann
Symptomatic dengue virus (DENV) infections range from mild fever to severe haemorrhagic disease and death. Host-viral interactions play a significant role in deciding the fate of the infection. The unfolded protein response (UPR) is a pro-survival cellular reaction induced in response to DENV mediated ER stress. The UPR has complex interactions with the cellular autophagy machinery, apoptosis and innate immunity. DENV has evolved to manipulate the UPR to facilitate its replication and to evade host immunity...
February 16, 2017: Cellular Microbiology
https://www.readbyqxmd.com/read/28132865/implementation-of-a-non-human-primate-model-of-ebola-disease-infection-of-mauritian-cynomolgus-macaques-and-analysis-of-virus-populations
#4
Géraldine Piorkowski, Frédéric Jacquot, Gilles Quérat, Caroline Carbonnelle, Delphine Pannetier, France Mentré, Hervé Raoul, Xavier de Lamballerie
Ebola virus (EBOV) haemorrhagic fever remains a threat to global public health with an urgent need for an effective treatment. In order to achieve these goals, access to non-human primate (NHP) laboratory models is an essential requirement. Here, we present the first NHP-EBOV laboratory model readily available to the European scientific community, based on infection of Mauritian cynomolgus macaques using a Central-African EBOV strain and increasing virus challenge dose (10, 100, or 1000 focus forming units per animal)...
January 26, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28118988/evaluation-of-positive-rift-valley-fever-virus-formalin-fixed-paraffin-embedded-samples-as-a-source-of-sequence-data-for-retrospective-phylogenetic-analysis
#5
B Mubemba, P N Thompson, L Odendaal, P Coetzee, E H Venter
Rift Valley fever (RVF), caused by an arthropod borne Phlebovirus in the family Bunyaviridae, is a haemorrhagic disease that affects ruminants and humans. Due to the zoonotic nature of the virus, a biosafety level 3 laboratory is required for isolation of the virus. Fresh and frozen samples are the preferred sample type for isolation and acquisition of sequence data. However, these samples are scarce in addition to posing a health risk to laboratory personnel. Archived formalin-fixed, paraffin-embedded (FFPE) tissue samples are safe and readily available, however FFPE derived RNA is in most cases degraded and cross-linked in peptide bonds and it is unknown whether the sample type would be suitable as reference material for retrospective phylogenetic studies...
January 22, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28111475/immunobiology-of-ebola-and-lassa-virus-infections
#6
REVIEW
Joseph B Prescott, Andrea Marzi, David Safronetz, Shelly J Robertson, Heinz Feldmann, Sonja M Best
Two of the most important contemporary emerging viruses that affect human health in Africa are Ebola virus (EBOV) and Lassa virus (LASV). The 2013-2016 West African outbreak of EBOV was responsible for more than 11,000 deaths, primarily in Guinea, Sierra Leone and Liberia. LASV is constantly emerging in these and surrounding West African countries, with an estimate of more than 500,000 cases of Lassa fever, and approximately 5,000 deaths, annually. Both EBOV and LASV are zoonotic, and human infection often results in a severe haemorrhagic fever in both cases...
January 23, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28062078/-coexistence-of-acute-appendicitis-and-dengue-fever-a-case-report
#7
Juan Fidel Osuna-Ramos, Carlos Silva-Gracia, Gerardo Joel Maya-Vacio, Alejandra Romero-Utrilla, Efrén Rafael Ríos-Burgueño, Jesús Salvador Velarde-Félix
BACKGROUND: Dengue is the most important human viral disease transmitted by mosquitoes. It can be asymptomatic or it can present in any of its 3clinical forms: Dengue fever, dengue haemorrhagic fever and dengue shock syndrome. However, some atypical manifestations have been reported in surgical emergencies caused by acute appendicitis in patients with dengue fever. CLINICAL CASE: We report the case of an 18-year-old Mexican male who presented to the emergency department of the General Hospital of Culiacan, Sinaloa, with symptoms of dengue fever, accompanied by crampy abdominal pain with positive Rovsing and Dunphy signs...
January 3, 2017: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/28050423/retroperitoneal-haematoma-in-a-patient-with-dengue-haemorrhagic-fever-a-rare-case-report
#8
Jasminder Singh, Harpreet Singh, Gagandeep Sukhija, Ruchi Jagota, Saroj Bala
Dengue Haemorrhagic Fever (DHF) has diverse manifestations ranging from asymptomatic petechial skin haemorrhages to life threatening cerebral, pulmonary, gastrointestinal and genitourinary haemorrhages. However, the association of spontaneous retroperitoneal haematomas with DHF is not well documented in literature. We report a rare case of spontaneous retroperitoneal haematoma complicating DHF.
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050371/haemostatic-profile-in-patients-of-myeloproliferative-neoplasms-a-tertiary-care-centre-experience
#9
Yatendra Parashar, Rashmi Kushwaha, Ashutosh Kumar, Kamal Agarwal, U S Singh, Mili Jain, S P Verma, A K Tripathi
INTRODUCTION: Patients of MPN commonly present with abnormalities in laboratory coagulation tests that are consistent with hypercoagulable state. Some individuals with MPN exhibit a pattern of exclusive bleeding or thrombotic events; many others have both bleeding and thrombosis during the course of the disease. AIM: This study was undertaken to assess the haemostatic defects and platelet functions in patients of MPN. MATERIALS AND METHODS: One year prospective study was conducted at a tertiary care centre in North India in Department of Pathology in collaboration with Department of Clinical Haematology...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28043993/safety-and-reproducibility-of-virtual-assisted-lung-mapping-a-multicentre-study-in-japan%C3%A2
#10
Masaaki Sato, Taiji Kuwata, Keiji Yamanashi, Atsushi Kitamura, Kenji Misawa, Kota Imashimizu, Masashi Kobayashi, Masaki Ikeda, Terumoto Koike, Shinji Kosaka, Ryuta Fukai, Yasuo Sekine, Noritaka Isowa, Shin Hirayama, Hiroaki Sakai, Fumiaki Watanabe, Kazuhiro Nagayama, Akihiro Aoyama, Hiroshi Date, Jun Nakajima
OBJECTIVES: Virtual-assisted lung mapping (VAL-MAP) is a preoperative bronchoscopic multispot dye-marking technique using virtual images. The purpose of this study was to evaluate the safety, efficacy and reproducibility of VAL-MAP among multiple centres. METHODS: Selection criteria included patients with pulmonary lesions anticipated to be difficult to identify at thoracoscopy and/or those undergoing sub-lobar lung resections requiring careful determination of resection margins...
January 2, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28031363/unravelling-the-armour-of-a-killer-evasion-of-host-defence-s-by-african-swine-fever-virus
#11
Ana Luisa Reis, Chris Netherton, Linda K Dixon
African swine fever is an acute haemorrhagic disease of pigs. Extensive recent spread in the Russian Federation and Eastern Europe has increased the risk to global pig production. The virus is a large DNA virus and is the only member of the Asfarviridae family. In pigs the virus replicates predominantly in macrophages. We review how the virus overcomes the barriers to replication in the macrophage and the virus mechanism to inhibit key host defence pathways.
December 28, 2016: Journal of Virology
https://www.readbyqxmd.com/read/28009103/experts-perceptions-on-china-s-capacity-to-manage-emerging-and-re-emerging-zoonotic-diseases-in-an-era-of-climate-change
#12
A Hansen, J Xiang, Q Liu, M X Tong, Y Sun, X Liu, K Chen, S Cameron, S Hanson-Easey, G-S Han, P Weinstein, C Williams, P Bi
Zoonotic diseases transmitted by arthropods and rodents are a major public health concern in China. However, interventions in recent decades have helped lower the incidence of several diseases despite the country's large, frequently mobile population and socio-economic challenges. Increasing globalization, rapid urbanization and a warming climate now add to the complexity of disease control and prevention and could challenge China's capacity to respond to threats of emerging and re-emerging zoonoses. To investigate this notion, face-to-face interviews were conducted with 30 infectious disease experts in four cities in China...
December 23, 2016: Zoonoses and Public Health
https://www.readbyqxmd.com/read/27977689/tick-borne-diseases-in-turkey-a-review-based-on-one-health-perspective
#13
REVIEW
Abdullah Inci, Alparslan Yildirim, Onder Duzlu, Mehmet Doganay, Serap Aksoy
The importance of tick-borne diseases is increasing all over the world, including Turkey. Global warming, environmental and ecological changes and the existence of suitable habitats increase the impact of ticks and result in frequent emergence or re-emergence of tick-borne diseases (TBDs) with zoonotic characteristics. In Turkey, almost 19 TBDs have been reported in animals and men, involving four protozoa (babesiosis, theileriosis, cytauxzoonosis, hepatozoonosis), one filarial nematode (acanthocheilonemasis), ten bacterial agents (anaplasmosis, ehrlichiosis, aegyptianellosis, tick-borne typhus, Candidatus Rickettsia vini, Lyme borreliosis, tick-borne relapsing fever [TBRF], tularaemia, bartonellosis, and hemoplasmosis), and four viral infections (tick-borne encephalitis [TBE], Crimean-Congo Haemorrhagic Fever [CCHF], louping-ill [LI], and lumpy skin disease [LSD])...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27957477/crimean-congo-haemorrhagic-fever-in-persian-traditional-medicine
#14
Omid Mozafari, Mohammad Reza Shirzadi, Seyed Afshin Shorofi, Arezoo Mozafari
No abstract text is available yet for this article.
September 2016: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/27932690/peripartum-dengue-haemorrhagic-fever-a-chameleon-that-changes-its-spots-a-case-requiring-laparotomy
#15
Gowri Dorairajan, Haritha Sagili
No abstract text is available yet for this article.
January 2017: Tropical Doctor
https://www.readbyqxmd.com/read/27926935/serological-and-virological-evidence-of-crimean-congo-haemorrhagic-fever-virus-circulation-in-the-human-population-of-borno-state-northeastern-nigeria
#16
David N Bukbuk, Stuart D Dowall, Kuiama Lewandowski, Andrew Bosworth, Saka S Baba, Anitha Varghese, Robert J Watson, Andrew Bell, Barry Atkinson, Roger Hewson
BACKGROUND: Despite several studies on the seroprevalence of antibodies against Crimean-Congo Haemorrhagic Fever virus (CCHFV) from humans and cattle in Nigeria, detailed investigation looking at IgG and IgM have not been reported. Additionally, there have been no confirmed cases of human CCHFV infection reported from Nigeria. PRINCIPAL FINDINGS: Samples from sera (n = 1189) collected from four Local Government Areas in Borno State (Askira/Uba, Damboa, Jere and Maiduguri) were assessed for the presence of IgG and IgM antibodies...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27924663/myomectomy-for-intramural-fibroids-during-caesarean-section-a-therapeutic-dilemma
#17
Murat Akbas, Veli Mihmanli, Berk Bulut, Ilkbal Temel Yuksel, Gulsen Karahisar, Gokhan Demirayak
The aim of the present study was to assess the safety of myomectomy for intramural fibroids during caesarean section. A retrospective study of 63 women who underwent myomectomy during caesarean section and 63 women who underwent caesarean delivery without myomectomy was conducted. The study group was divided into subgroups according to the volume of fibroids and total incision count. The volume of fibroids, the preoperative and postoperative haemoglobin values and the difference between them, incidence of haemorrhage and blood transfusion, duration of operation and postoperative fever of patients were investigated...
December 7, 2016: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/27920694/pancreatic-and-hepatic-metastasis-of-an-undiagnosed-choriocarcinoma-an-exceptional-cause-of-haemoperitoneum-in-young-women-report-of-a-rare-case
#18
Nishat Fatema, Neeru Vinod Arora, Fatma Majid Al Abri, Yaseer Muhammad Tareq Khan
Haemoperitoneum in women of reproductive age usually suggests either ruptured ectopic pregnancy or ruptured ovarian cysts. Metastatic choriocarcinoma is considered the least common cause of haemoperitoneum in women of childbearing age. We report a rare case of pancreatic and hepatic metastasis of choriocarcinoma in a young, 30-year-old female who had delivered 10 months prior at term gestation with no previous history of gestational trophoblastic disease or molar pregnancy. She had a short history of fever and pain in the right hypochondrium, with findings of hypovolaemic shock due to intraperitoneal haemorrhage...
September 2016: Case Reports in Oncology
https://www.readbyqxmd.com/read/27857837/autoimmune-polyendocrinopathy-and-hypophysitis-after-puumala-hantavirus-infection
#19
Marlene Tarvainen, Satu Mäkelä, Jukka Mustonen, Pia Jaatinen
: Puumala hantavirus (PUUV) infection causes nephropathia epidemica (NE), a relatively mild form of haemorrhagic fever with renal syndrome (HFRS). Hypophyseal haemorrhage and hypopituitarism have been described in case reports on patients with acute NE. Chronic hypopituitarism diagnosed months or years after the acute illness has also been reported, without any signs of a haemorrhagic aetiology. The mechanisms leading to the late-onset hormonal defects remain unknown. Here, we present a case of NE-associated autoimmune polyendocrinopathy and hypopituitarism presumably due to autoimmune hypophysitis...
2016: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/27843231/anterior-ischemic-optic-neuropathy-following-dengue-fever
#20
Reshma Ramakrishnan, Saurabh Shrivastava, Shrikant Deshpande, Priyanka Patkar
Dengue fever is caused by a flavivirus. This infection is endemic in the tropics and warm temperate regions of the world. Ocular manifestations of dengue fever include subconjunctival, vitreous, and retinal haemorrhages; posterior uveitis; optic neuritis; and maculopathies, haemorrhage, and oedema. However anterior ischemic optic neuropathy is a rare presentation. Optic nerve ischemia most frequently occurs at the optic nerve head, where structural crowding of nerve fibers and reduction of the vascular supply may combine to impair perfusion to a critical degree and produce optic disc oedema...
September 2016: Oman Journal of Ophthalmology
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