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https://www.readbyqxmd.com/read/28086865/rnai-reveals-proteins-for-metabolism-and-protein-processing-associated-with-langat-virus-infection-in-ixodes-scapularis-black-legged-tick-ise6-cells
#1
Jeffrey M Grabowski, Monika Gulia-Nuss, Richard J Kuhn, Catherine A Hill
BACKGROUND: Tick-borne flaviviruses (TBFs) cause thousands of human cases of encephalitis worldwide each year, with some TBF infections progressing to hemorrhagic fever. TBFs are of medical and veterinary importance and strategies to reduce flavivirus transmission by the tick vector may have significant application. Analyses of the proteome of ISE6 cells derived from the black legged tick, Ixodes scapularis infected with the TBF, Langat virus (LGTV), have provided insights into proteins and cellular processes involved with LGTV infection...
January 13, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28078104/discovery-of-flavivirus-derived-endogenous-viral-elements-in-anopheles-mosquito-genomes-supports-the-existence-of-anopheles-associated-insect-specific-flaviviruses
#2
Sebastian Lequime, Louis Lambrechts
The Flavivirus genus encompasses several arboviruses of public health significance such as dengue, yellow fever, and Zika viruses. It also includes insect-specific flaviviruses (ISFs) that are only capable of infecting insect hosts. The vast majority of mosquito-infecting flaviviruses have been associated with mosquito species of the Aedes and Culex genera in the Culicinae subfamily, which also includes most arbovirus vectors. Mosquitoes of the Anophelinae subfamily are not considered significant arbovirus vectors; however, flaviviruses have occasionally been detected in field-caught Anopheles specimens...
January 2017: Virus Evolution
https://www.readbyqxmd.com/read/28074266/fever-of-unknown-origin-giant-cell-arteritis-and-aortic-dissection
#3
K Hofheinz, S Bertz, J Wacker, G Schett, B Manger
Giant cell arteritis is one of the most frequent causes of pyrexia of unknown origin after infectious or malignant causes have been ruled out. In this case report we describe a 66-year old female patient, who after five weeks of remitting fever developed a life-threatening, painless severe aortic dissection. The timely use of modern imaging technologies such as magnetic resonance angiography or positron emission computed tomography could in the future be of help to recognize aortic involvement early and to avoid this devastating complication in patients with fever of unknown origin...
January 10, 2017: Zeitschrift Für Rheumatologie
https://www.readbyqxmd.com/read/28068282/serological-and-molecular-biological-studies-of-parvovirus-b19-coxsackie-b-viruses-and-adenoviruses-as-potential-cardiotropic-viruses-in-bulgaria
#4
Stefka Kr Ivanova, Svetla G Angelova, Asya P Stoyanova, Irina L Georgieva, Lubomira K Nikolaeva-Glomb, Zafira G Mihneva, Neli St Korsun
BACKGROUND: Inflammatory diseases of the heart (myocarditis, pericarditis) are commonly caused by viruses. Among the human cardiotropic viruses, parvovirus B19, Coxsackie B viruses, and adenoviruses play a leading role. AIM: The aim of the present study was to determine the presumptive causative role of parvovirus B19, Coxsackie B viruses, and adenoviruses in the development of myocarditis, pericarditis and dilated cardiomyopathy by demonstrating the presence of specific antiviral antibodies or viral DNA in patients' serum samples...
December 1, 2016: Folia Medica
https://www.readbyqxmd.com/read/28065832/a-novel-method-to-enhance-phenotype-epicardial-functional-substrates-and-ventricular-tachyarrhythmias-in-brugada-syndrome
#5
Fa-Po Chung, Sunu Budhi Raharjo, Yenn-Jiang Lin, Shih-Lin Chang, Li-Wei Lo, Yu-Feng Hu, Ta-Chuan Tuan, Tze-Fan Chao, Jo-Nan Liao, Chin-Yu Lin, Yao-Ting Chang, Yuan Hung, Abigail Te, Shinya Yamada, Hiroshi Tasaka, Shih-Ann Chen, Chin-Tien Wang
BACKGROUND: Fever is associated with the manifestation of Brugada phenotype and ventricular tachycardia/fibrillation (VT/VF) in patients with Brugada syndrome (BrS). The thermal effect on the pathogenesis of functional substrates in BrS remains unknown. OBJECTIVE: The study aimed to elucidate the thermal effect on BrS phenotype, VT/VF, and electrophysiological characteristics of epicardial functional substrates in BrS. METHODS: We consecutively studied 15 patients with BrS receiving radiofrequency catheter ablation (RFCA) for drug-refractory ventricular tachyarrhythmias...
January 5, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28062417/pulmonary-tuberculosis-presenting-as-post-operative-fever-of-unknown-origin
#6
Patrick Bogue, Mhairi Bolland, Peter How, Harrison Benziger
Post-operative fever is common following emergency surgery. Investigation and management of post-operative fever can be challenging when a clear source of sepsis is not evident or the underlying source of infection is not recognised. We herein report a case of secondary pulmonary tuberculosis presenting as post-operative fever following emergency laparotomy for a perforated duodenal ulcer. This case of tuberculosis was diagnosed on day 41 post-operatively and prior inconclusive results meant that we relied mainly on re-visiting history and examination in order to identify 3 targeted investigations: plain chest X-ray, sputum sample and blood test...
January 6, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28058158/a-rare-cause-of-proptosis-in-childhood-langerhans-cell-histiocytosis
#7
Mustafa Vatansever, Esra Vatansever, Erdem Dinç, Ayça Sarı, Tuba Kara
A three-year-old male patient was admitted to the clinic with proptosis in his right eye. He had a history of fever with an unknown etiology. In examination, right proptosis was observed and an immobile mass was palpated at the lateral wall of the right orbita. Eye movement was unrestricted in all directions and anterior and posterior segment examination was normal in both eyes. On computed tomography, diffuse bone destruction and expansion was observed in the right orbital lateral wall and other cranial bones...
August 2016: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28053110/ovine-herpesvirus-2-glycoproteins-b-h-and-l-are-sufficient-for-and-viral-glycoprotein-ov8-can-enhance-cell-cell-membrane-fusion
#8
Salim M AlHajri, Cristina W Cunha, Anthony V Nicola, Hector C Aguilar, Hong Li, Naomi S Taus
: Ovine herpesvirus 2 (OvHV-2) is a gammaherpesvirus in the genus Macavirus that is carried asymptomatically by sheep. Infection of poorly adapted animals with OvHV-2 results in sheep-associated malignant catarrhal fever, a fatal disease characterized by lymphoproliferation and vasculitis. There is no treatment or vaccine for the disease and no cell culture system to propagate the virus. The lack of cell culture has hindered studies of OvHV-2 biology including its entry mechanism. As an alternative method to study OvHV-2 glycoproteins responsible for membrane fusion as a part of the entry mechanism, we developed a virus-free cell-to-cell membrane fusion assay to identify the minimum required OvHV-2 glycoproteins to induce membrane fusion...
January 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28052948/tb-or-not-to-be-kikuchi-fujimoto-disease-a-rare-but-important-differential-for-tb
#9
C McKenna, T Whitfield, N Patel, A Bonington
A 29-year-old British Pakistani woman presented with a 2-month history of drenching fevers, night sweats, lethargy and tender cervical and axillary lymphadenopathy. Initial investigations, bloods and imaging were unremarkable. Fever persisted during her admission, and treatment for tuberculosis (TB) lymphadenitis was started postbiopsy until histology confirmed a diagnosis of Kikuchi-Fujimoto's disease (KFD). KFD has a non-specific presentation of fever, night sweats and lymphadenopathy and commonly raises a clinical suspicion of a number of other serious conditions such as TB, lymphoma, HIV, systemic lupus erythematous, toxoplasmosis and infectious mononucleosis...
January 4, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28043581/common-features-of-tuberculosis-and-sarcoidosis
#10
Esmaeil Mortaz, Mohammad Reza Masjedi, Atefeh Abedini, Soheila Matroodi, Arda Kiani, Dina Soroush, Ian M Adcock
Tuberculosis (TB) is a disease caused by Mycobacterium tuberculosis. Despite the availability of novel therapeutic approaches, TB is considered as one of the leading causes of death due to infectious diseases worldwide. Alveolar macrophages are the first line of defense against M. tuberculosis; they ingest and sequester the bacilli within granulomatous structures. Control and resolution of the infection requires activated T lymphocytes as well as Th1 cytokines. There are two forms of TB: active TB and latent TB...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28039013/data-informed-analysis-of-2014-dengue-fever-outbreak-in-guangzhou-impact-of-multiple-environmental-factors-and-vector-control
#11
Yi Jing, Xia Wang, Sanyi Tang, Jianhong Wu
Epidemics of dengue fever in China were reported before 1940 and the outbreak of dengue fever in Guangdong province in 2014 is the most serious so far. The important question is what factors account for this serious outbreak, and how to evaluate the sensitivity of the multiple factors including weather variables and human actions on the dengue disease. Therefore, according to the relations among the temperature (daily mean temperature (DMT) and diurnal temperature range (DTR)), vector parameters and reproduction number we have proposed the analytical formula for the relative vector's capacity and effective reproduction number, and then we have the formula for the likelihood function by employing the generation interval-informed method...
December 27, 2016: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28031280/proteolytic-cleavage-of-the-immunodominant-outer-membrane-protein-rompa-in-rickettsia-rickettsii
#12
Nicholas F Noriea, Tina R Clark, David Mead, Ted Hackstadt
: Rickettsia rickettsii, the causative agent of Rocky Mountain spotted fever, contains two immunodominant proteins, rOmpA and rOmpB, in the outer membrane. Both rOmpA and rOmpB are conserved throughout spotted fever group rickettsiae as members of a family of autotransporter proteins. Previously, it was demonstrated that rOmpB is proteolytically processed with the cleavage site residing near the autotransporter domain at the carboxy-terminal end of the protein, cleaving the 168 kDa precursor into apparent 120 kDa and 32 kDa fragments...
December 28, 2016: Journal of Bacteriology
https://www.readbyqxmd.com/read/28018446/familial-mediterranean-fever-presenting-as-fever-of-unknown-origin-in-korea
#13
Jun Hee Lee, Jong Hyun Kim, Jung Ok Shim, Kwang Chul Lee, Joo Won Lee, Jung Hwa Lee, Jae Jin Chae
Familial Mediterranean fever (FMF) is the most common Mendelian autoinflammatory disease, characterized by uncontrolled activation of the innate immune system that manifests as recurrent brief fever and polyserositis (e.g., peritonitis, pleuritic, and arthritis). FMF is caused by autosomal recessive mutations of the Mediterranean fever gene, MEFV which encodes the pyrin protein. Although FMF predominantly affects people from Mediterranean and Middle Eastern ethnic origins, 3 cases of FMF have been reported in Korea since 2012...
November 2016: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/28009946/successful-surgical-treatment-of-a-huge-candida-albicans-aortic-fungus-ball-with-pseudoaneurysm
#14
Satoru Tobinaga, Yuichirou Hirata, Hiroyuki Saisho, Kumiko Wada, Kohsuke Saku, Satoshi Kikusaki, Tohru Takaseya, Hiroyuki Tanaka
A 70-year-old woman with a history of aortic valve replacement and coronary artery bypass grafting (CABG) was transferred to the authors' hospital for further management of a three-month fever of unknown origin. Computed tomography showed a huge mass in the ascending aorta with pseudoaneurysm. Blood β-D-glucan levels were significantly high, and blood culture showed the growth of Candida albicans. The fungus ball was excised surgically, together with aortic root replacement and CABG, followed by six-month postoperative anti-fungal therapy...
July 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28006774/the-prevalence-of-fabry-disease-in-patients-with-chronic-kidney-disease-in-turkey-the-turkfab-study
#15
Kultigin Turkmen, Aydın Guclu, Garip Sahin, Ismail Kocyigit, Levent Demirtas, Fatih Mehmet Erdur, Erkan Sengül, Oktay Ozkan, Habib Emre, Faruk Turgut, Hilmi Unal, Murat Karaman, Cengiz Acıkel, Hasan Esen, Ebru Balli, Gulfidan Bıtırgen, Halil Zeki Tonbul, Mahmut Ilker Yılmaz, Alberto Ortiz
BACKGROUND/AIMS: Fabry disease is a treatable cause of chronic kidney disease (CKD) characterized by a genetic deficiency of α-galactosidase A. European Renal Best Practice (ERBP) recommends screening for Fabry disease in CKD patients. However, this is based on expert opinion and there are no reports of the prevalence of Fabry disease in stage 1-5 CKD. Hence, we investigated the prevalence of Fabry disease in CKD patients not receiving renal replacement therapy. METHODS: This prospective study assessed α-galactosidase activity in dried blood spots in 313 stage 1-5 CKD patients, 167 males, between ages of 18-70 years whose etiology of CKD was unknown and were not receiving renal replacement therapy...
2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/28005031/-follow-up-of-patients-with-ixodes-tick-borne-borrelioses-caused-by-borrelia-miyamotoi-or-borrelia-burgdorferi-sensu-lato
#16
L I Bagautdinova, A E Platonov, D S Sarksyan, O V Stukolova, G A Shipulin, V V Maleev, M V Dudarev
: Ixodes tick-borne borrelioses (ITBB) are caused by two different spirochetes: Borrelia from the group of Borrelia burgdorferi sensu lato, the agents of the classic Lyme borreliosis (LB), and Borrelia miyamotoi that belongs to the group of Borrelia causing tick-borne relapsing fevers. ITBB caused by B. miyamotoi (BM-ITBB) is a previously unknown infectious disease discovered in Russia. It is known that the LB sequelae may reduce the long-term life guality of convalescents. AIM: To study the follow-up of those who have recovered from new BM-ITBB infection in comparison with persons who have had LB...
2016: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/27999807/clinical-and-microbiological-characteristics-of-visceral-leishmaniasis-outbreak-in-a-northern-italian-nonendemic-area-a-retrospective-observational-study
#17
E Franceschini, C Puzzolante, M Menozzi, L Rossi, A Bedini, G Orlando, W Gennari, M Meacci, G Rugna, E Carra, M Codeluppi, C Mussini
Background. Visceral leishmaniasis (VL) caused by Leishmania infantum is endemic in the Mediterranean area. In the last decades a northward spread of the parasite has been observed in Italy. This paper describes a VL outbreak in Modena province (Emilia-Romagna, Northern Italy) between 2012 and 2015. Methods. Retrospective, observational study to evaluate epidemiological, microbiological characteristics, and clinical management of VL in patients referring to Policlinico Modena Hospital. Results. Sixteen cases of VL occurred in the study period...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27998728/il-1%C3%AE-and-caspase-1-drive-autoinflammatory-disease-independently-of-il-1%C3%AE-or-caspase-8-in-a-mouse-model-of-familial-mediterranean-fever
#18
Deepika Sharma, Bhesh Raj Sharma, Peter Vogel, Thirumala-Devi Kanneganti
Mutations in the gene encoding pyrin are associated with autoinflammatory disorder Familial Mediterranean Fever (FMF). A FMF-knock-in mouse strain that expresses chimeric pyrin protein with a V726A mutation (Mefv(V726A/V726A)) was generated to model human FMF. This mouse strain shows an autoinflammatory disorder that is prevented by genetic deletion of IL-1 (IL-1) receptor or apoptosis-associated speck-like protein containing a CARD (ASC). ASC-mediated cell death leads to the release of IL-1α and IL-1β, both of which signal through IL-1 receptor...
December 17, 2016: American Journal of Pathology
https://www.readbyqxmd.com/read/27995553/role-of-neutrophil-to-lymphocyte-and-monocyte-to-lymphocyte-ratios-in-the-diagnosis-of-bacterial-infection-in-patients-with-fever
#19
Are Naess, Siri Saervold Nilssen, Reidun Mo, Geir Egil Eide, Haakon Sjursen
PURPOSE: To study the role of the neutrophil:lymphocyte ratio (NLR) and monocyte:lymphocyte ratio (MLR) in discriminating between different patient groups hospitalized for fever due to infection and those without infection. METHODS: For 299 patients admitted to hospital for fever with unknown cause, a number of characteristics including NLR and MLR were recorded. These characteristics were used in a multiple multinomial regression analysis to estimate the probability of a final diagnostic group of bacterial, viral, clinically confirmed, or no infection...
December 19, 2016: Infection
https://www.readbyqxmd.com/read/27990380/kawasaki-disease-for-dermatologists
#20
REVIEW
Aman Gupta, Surjit Singh
Kawasaki disease (KD) is a systemic vasculitis that mostly affects children below the age of 5. The vasculitis involves arteries of medium size, especially the coronaries. Various etiologies have been proposed including association with micro-organisms, bacterial superantigens, and genetic factors, however, the exact cause remains unknown. There is no specific laboratory test for KD. Diagnosis is clinical and depends upon the presence of fever for ≥5 days and 4 or more of five principal features, viz. polymorphous exanthem, extremity changes, mucosal changes involving the lips and oral cavity, bilateral bulbar conjunctival injection, and unilateral cervical lymphadenopathy...
November 2016: Indian Dermatology Online Journal
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