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https://www.readbyqxmd.com/read/27915419/necrotizing-meningoencephalitis-caused-by-sarcocystis-falcatula-in-bare-faced-ibis-phimosus-infuscatus
#1
Guilherme Konradt, Matheus Viezzer Bianchi, Ronaldo Viana Leite-Filho, Bruna Zafalon da Silva, Rodrigo Martins Soares, Saulo Petinatti Pavarini, David Driemeier
The infection by S. falcatula is commonly associated with respiratory disease in captive psittacine birds, with a few case reports of this protozoan causing encephalitis in wild birds. We describe the clinical, pathological, and molecular aspects of an infection by S. falcatula in a bare-faced ibis (Phimosus infuscatus). Clinically, wing paralysis and mild motor incoordination were observed. At necropsy, the telencephalic cortex showed multifocal to coalescing yellowish soft areas. Histologically, multifocal to coalescent nonsuppurative necrotizing meningoencephalitis of telencephalic cortex, cerebellum, and brainstem was observed...
December 3, 2016: Parasitology Research
https://www.readbyqxmd.com/read/27915049/csn1201-a-subunit-of-the-cop9-signalosome-regulates-the-virulence-in-cryptococcus-neoformans-infection
#2
Yibin Fan, Xiaohua Tao, Weili Pan, Wei Fang, Youming Huang, Mingyan Jia
The COP9 signalosome (CSN) is a multisubunit protein complex, and it now has been found to participate in diverse cellular and developmental processes in various eukaryotic organisms. Cryptococcus neoformans (C. neoformans) is an important basidiomycete pathogen that causes life-threatening meningoencephalitis primarily in the immune compromised population. Here, we generated CSN deletion mutants to investigate the role in Cryptococcus infection. Compared to other CSN mutants, we identified a CSN1201 mutant exhibited severely attenuated virulence...
November 30, 2016: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/27907970/-epidemiology-etiology-and-clinical-picture-of-enteroviral-meningitis-in-children-in-south-moravia
#3
Adriana Braunová, Petra Rainetová, Lenka Krbková, Iva Čapovová, Lenka Klapačová, Václav Musil, Martin Musílek, Jana Bednářová
OBJECTIVES: Enteroviruses (EVs) are the most common cause of aseptic viral meningitis. In some cases, they can cause severe meningoencephalitis and acute flaccid paralysis - an association with some virulent serotypes. The objectives were to describe the epidemiological situation of EV meningitis in children in South Moravia, to elucidate the etiology including the incidence of virulent serotypes and to evaluate the clinical presentation. MATERIAL AND METHODS: A total of 88 children with EV meningitis were prospectively evaluated...
September 2016: Klinická Mikrobiologie a Infekc̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27905621/-parechovirus-as-etiologic-agent-of-meningitis-and-or-sepsis-like-illness-in-infants
#4
Valentina Gutiérrez, Constanza Martínez-Valdebenito, Luisa Montecinos, Romina Alarcón, Constanza Gárate, Marcela Ferrés
INTRODUCTION: Human parechovirus (HPeV) belongs to the Picornaviridae family and has been described in viral meningoencephalitis and sepsis like illness in infants. Until now, 16 genotypes have been recognized, the most common are HPEV 1, 2 and 3; type 3 is most severe. AIMS: To estimate the frequency of HPEV etiology in viral meningoencephalitis and sepsis in infants and characterize clinical and molecular aspects of infection. METHODS: Between October 2013 and March 2015 we collected CSF samples, plasma, nasopharyngeal swabs and/or stools of patients younger than two years with suspected sepsis and/or viral meningitis...
August 2016: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/27899230/experimental-zika-virus-infection-induces-spinal-cord-injury-and-encephalitis-in-newborn-swiss-mice
#5
Natália C C A Fernandes, Juliana S Nogueira, Rodrigo A Réssio, Cinthya S Cirqueira, Lidia M Kimura, Karolina R Fernandes, Mariana S Cunha, Renato P Souza, Juliana M Guerra
A widespread epidemic of Zika virus (ZIKV) infection was reported in 2015 in South and Central America, with neurological symptons including meningoencephalitis and Guillain-Barré syndrome in adults, besides an apparent increased incidence of microcephaly in infants born to infected mothers. It is becoming a necessity to have a trustworthy animal model to better understand ZIKV infection. In this study we used newborn white Swiss mice as a model to investigate the ZIKV strain recently isolated in Brazil. ZIKV was inoculated via intracerebral and subcutaneous routes and analysed through gross histopathology and immunohistochemistry...
November 26, 2016: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/27890955/aspergillus-meningoencephalitis-in-a-patient-with-human-immunodeficiency-virus-infection-normal-cerebrospinal-fluid-does-not-mean-absence-of-meningitis
#6
Soaham Dilip Desai, Sanket Seth, Aniketh Shah, Bhalendu Vaishnav
A male with human immunodeficiency virus infection presented with febrile encephalopathy followed by seizures and left hemiparesis. Initial imaging with contrast computerized tomography (CT) scan brain and cerebrospinal fluid (CSF) examination were normal. Subsequent magnetic resonance imaging brain revealed bilateral parieto-occipital infarcts with bleed. He did not improve on treatment with broad-spectrum antibiotics, anti-tubercular drugs, and antifungals. He finally succumbed to the disease. His CSF culture grew Aspergillus after 2 weeks...
July 2016: Indian Journal of Sexually Transmitted Diseases
https://www.readbyqxmd.com/read/27890651/biofilm-is-associated-with-chronic-streptococcal-meningoencephalitis-in-fish
#7
A S Isiaku, M Y Sabri, M Y Ina-Salwany, M D Hassan, P N Tanko, M B Bello
Biofilms are aggregates of attached microbial organisms whose existence on tissues is often recognised as a mechanism for the establishment of most chronic diseases. Herein we investigated the ability of piscine Streptococcus agalactiae, an important aquatic pathogen, for adaptation to this sessile lifestyle in vitro and in the brain of a tilapia fish model. Piscine S. agalactiae exhibited a weak attachment to polystyrene plates and expressed a low biofilm phenotype under the study conditions. Furthermore, fluorescent in situ hybridization and confocal laser scanning microscopy revealed discrete aggregates of attached S...
November 24, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27889719/causes-of-death-among-children-aged-5-years-in-a-public-hospital-in-new-delhi
#8
Manas Pratim Roy, Ratan Gupta, Meenakshi Bhatt, Kailash Chander Aggarwal
Retrospective analysis was done for 3817 children aged 5-12 years admitted in a tertiary-care, public hospital in New Delhi between January to December, 2015. Mortality rate was 5.8%. About 47.1% deaths were due to central nervous system involvement; viral meningoencephalitis being the predominant cause. Overall, infectious diseases caused >80% of deaths. Public health interventions to reduce child mortality need to review such data for effective measures.
November 5, 2016: Indian Pediatrics
https://www.readbyqxmd.com/read/27884809/construction-of-a-streptococcus-agalactiae-phob-mutant-and-evaluation-of-its-potential-as-an-attenuated-modified-live-vaccine-in-golden-pompano-trachinotus-ovatus
#9
Xiaohui Cai, Bei Wang, Yinhui Peng, Yuan Li, Yishan Lu, Yucong Huang, Jichang Jian, Zaohe Wu
Streptococcus agalactiae is a Gram-positive pathogen that can survive inside professional phagocytes and nonphagocytic cells to cause septicemia and meningoencephalitis in freshwater and marine fish. However, vaccines based on extracellular products (ECP) and formalin-killed whole S. agalactiae cells, as well as subunit vaccine are unable to protect fish from infection by variant serotypes S. agalactiae. The search for live attenuated vaccine with highly conserved and virulent-related genes is essential for producing a vaccine to help understand and control streptococcosis In this study, the phoB gene was cloned from pathogenic S...
November 21, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27881097/ischaemic-stroke-and-clostridium-septicum-sepsis-and-meningitis-in-a-patient-with-occult-colon-carcinoma-a-case-report-and-review-of-the-literature
#10
Kosmas Macha, Antje Giede-Jeppe, Hannes Lücking, Roland Coras, Hagen B Huttner, Jürgen Held
BACKGROUND: Clostridium septicum is a rare cause of meningitis and brain abscess in children and adults. Gas production by the pathogen can lead to pneumocephalus and the overall mortality rate of Clostridium septicum CNS infection is as high as 74%. The most common entry site of the pathogen is the gastrointestinal tract. CASE PRESENTATION: We describe a 74-year-old man who presented with a left-sided cerebral infarction in the middle cerebral artery territory...
November 24, 2016: BMC Neurology
https://www.readbyqxmd.com/read/27875529/cd4-t-cells-are-as-protective-as-cd8-t-cells-against-rickettsia-typhi-infection-by-activating-macrophage-bactericidal-activity
#11
Kristin Moderzynski, Stefanie Papp, Jessica Rauch, Liza Heine, Svenja Kuehl, Ulricke Richardt, Bernhard Fleischer, Anke Osterloh
Rickettsia typhi is an intracellular bacterium that causes endemic typhus, a febrile disease that can be fatal due to complications including pneumonia, hepatitis and meningoencephalitis, the latter being a regular outcome in T and B cell-deficient C57BL/6 RAG1-/- mice upon Rickettsia typhi infection. Here, we show that CD4+ TH1 cells that are generated in C57BL/6 mice upon R. typhi infection are as protective as cytotoxic CD8+ T cells. CD4+- as well as CD8+-deficient C57BL/6 survived the infection without showing symptoms of disease at any point in time...
November 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27866477/cross-reactivity-of-the-31-kda-antigen-of-angiostrongylus-cantonensis-dealing-with-the-immunodiagnosis-of-meningoencephalitis
#12
Alessandra L Morassutti, Lisa N Rascoe, Sukwan Handali, Alexandre J DA Silva, Patricia P Wilkins, Carlos Graeff-Teixeira
The primary causative agent of eosinophilic meningoencephalitis (EoM) in endemic regions is the nematode Angiostrongylus cantonensis. The occurrence of EoM was previously restricted to countries in Southeast Asia and the Pacific Islands; however, more recently, it has been reported from other regions, including Brazil. The commonly used diagnosis is detection of specific antibody reactivity to the 31 kDa antigen, which is derived from female worm somatic extracts. Here we report the occurrence of cross-reactivity to this antigen in sera from other parasitic infections, especially those that may cause EoM, such as gnathostomiasis, toxocariasis, hydatidosis and strongyloidiasis...
November 21, 2016: Parasitology
https://www.readbyqxmd.com/read/27858519/role-of-microglia-in-fungal-infections-of-the-central-nervous-system
#13
George W Koutsouras, Raddy L Ramos, Luis R Martinez
Most fungi are capable of disseminating into the central nervous system (CNS) commonly being observed in immunocompromised hosts. Microglia plays a critical role in responding to these infections regulating inflammatory processes proficient at controlling CNS colonization by these eukaryotic microorganisms. Nonetheless, it is this inflammatory state that paradoxically yields cerebral mycotic meningoencephalitis and abscess formation. As peripheral macrophages and fungi have been investigated aiding our understanding of peripheral disease, ascertaining the key interactions between fungi and microglia may uncover greater abilities to treat invasive fungal infections of the brain...
November 18, 2016: Virulence
https://www.readbyqxmd.com/read/27851418/1783-tuberculosis-meningoencephalitis-causing-cerebral-salt-wasting-and-severe-hyponatremia
#14
Peter Nguyen, Nader Kamangar
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27836852/comparative-genomics-reveal-the-diversity-of-restriction-methylation-systems-in-listeria-monocytogenes
#15
Poyin Chen, Henk C den Bakker, Jonas Korlach, Nguyet Kong, Dylan B Storey, Ellen E Paxinos, Meredith Ashby, Tyson Clark, Khai Luong, Martin Wiedmann, Bart C Weimer
: Listeria monocytogenes is a bacterial pathogen that found in a wide variety of anthropogenic and natural environments. Genome sequencing technologies are rapidly becoming a powerful tool in facilitating our understanding of how genotype, classification and virulence phenotypes interact to predict the health risks of individual bacterial isolates. Currently, 57 closed L. monocytogenes genomes are publicly available representing three of the four phylogenetic lineages and suggest L. monocytogenes has high genomic synteny...
November 11, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27832029/brucellar-aortitis-and-meningoencephalitis-in-an-adolescent
#16
Gulsum Iclal Bayhan, Ibrahim Ece, Ahmet Faik Oner
Brucellosis can affect any organ system and result in possible complications. We present an adolescent male who had brucellar aortitis and meningitis simultaneously. Brucellar aortic involvement is a rare complication of brucellosis and can occur without concomitant endocarditis. Here, the patient was managed with prolonged antibiotic therapy without any surgery.
December 2016: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/27819416/neurological-manifestations-of-acute-posterior-multifocal-placoid-pigment-epitheliopathy
#17
Hussein Algahtani, Ashjan Alkhotani, Bader Shirah
BACKGROUND AND PURPOSE: Acute posterior multifocal placoid pigment epitheliopathy (APMPPE) is an immune-mediated chorioretinal disease that causes acute visual symptoms with characteristic ophthalmoscopic findings. Neurological complications are rarely reported in the literature. Here we report two new cases of APMPPE that presented with neurological manifestations, one of which was associated with peripheral neuropathy, which has not been described before. METHODS: A retrospective database review of all patients with a diagnosis of APMPPE was performed...
October 2016: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/27818809/neurobrucellosis-a-case-report-from-himachal-pradesh-india-and-review-of-the-literature
#18
Sujeet Raina, Ashish Sharma, Rajesh Sharma, Amit Bhardwaj
Human brucellosis is a multisystem disease that commonly presents as a febrile illness along with variable spectrum of clinical manifestations. Neurological complications include encephalitis, meningoencephalitis, radiculitis, myelitis, peripheral and cranial neuropathies, subarachnoid hemorrhage, and psychiatric manifestations. We report a case diagnosed as neurobrucellosis who presented with fever and bilateral upper motor neuron symptoms and signs along with bilateral sensorineural deafness. Diagnosis was confirmed by Rose Bengal Test (RBT) and standard tube agglutination test (SAT)...
2016: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/27818191/corticosteroids-for-the-management-of-severe-intracranial-hypertension-in-meningoencephalitis-caused-by-cryptococcus-gattii-a-case-report-and-review
#19
R-A Maciel, L-S Ferreira, F Wirth, P-D Rosa, M Aves, E Turra, L-Z Goldani
Immune reconstitution inflammatory syndrome in meningitis caused by Cryptococcus gattii in immunocompetent patients after initiation of antifungal therapy appears to be the result of paradoxical antifungal treatment-induced clinical deterioration due to improved local immune responses to cryptococcal organisms. Recent anecdotal reports have suggested a favorable clinical response to corticosteroids in select patients with C. gattii central nervous system (CNS) infections. In this report, we describe a 65-year-old patient with meningoencephalitis caused by C...
November 3, 2016: Journal de Mycologie Médicale
https://www.readbyqxmd.com/read/27816018/sequence-analysis-of-the-first-c2-subgenogroup-strain-of-enterovirus-71-isolated-in-korea
#20
Jung-Ah Lee, Young Sil Yoon, Ji-Yeon Hyeon, Jung Sik Yoo, Sang-Won Lee, June-Woo Lee, Sang-Won Lee
BACKGROUND: Enterovirus 71 (EV71) is an important causative agent of hand-foot-and-mouth disease with severe neurological complications, which may lead to death in children. Large outbreaks caused by EV71 have frequently occurred in Asia-Pacific region. OBJECTIVES: In Korea, the outbreaks have been caused by EV71 subgenogroups C3, and C4. Only genogroup C, especially subgenogroup C1, C3, C4, and C5, has been detected by the national enterovirus surveillance system in Korea...
October 22, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
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