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Aritreyee Datta, Vikas Yadav, Anirban Ghosh, Jaesun Choi, Dipita Bhattacharyya, Rajiv K Kar, Humaira Ilyas, Arkajyoti Dutta, Eunseol An, Jayanta Mukhopadhyay, Dongkuk Lee, Kaustuv Sanyal, Ayyalusamy Ramamoorthy, Anirban Bhunia
There is a significant need for developing compounds that kill Cryptococcus neoformans, the fungal pathogen that causes meningoencephalitis in immunocompromised individuals. Here, we report the mode of action of a designed antifungal peptide, VG16KRKP (VARGWKRKCPLFGKGG) against C. neoformans. It is shown that VG16KRKP kills fungal cells mainly through membrane compromise leading to efflux of ions and cell metabolites. Intracellular localization, inhibition of in vitro transcription, and DNA binding suggest a secondary mode of action for the peptide, hinting at possible intracellular targets...
October 18, 2016: Biophysical Journal
Joana Correia, José Eduardo Alves, Paula Ferreira, Manuela Ferreira, Paula Pires, Cristina Garrido
No abstract text is available yet for this article.
November 2016: Pediatric Infectious Disease Journal
Mariana G Lima, Vinícius M Tunholi-Alves, Fabrício N Gaudêncio, Florence G Martins, Rosane N Castro, Silvana C Thiengo, Juberlan S Garcia, Arnaldo Maldonado, Jairo Pinheiro
Angiostrongylus cantonensis is considered the main agent responsible for human eosinophilic meningoencephalitis. This parasite has low specificity for mollusk hosts and it can also use aquatic snails as auxiliary hosts. Studies based on the metabolic profile of Biomphalaria spp. infected by A. cantonensis have been conducted to observe parasite-host interactions. In the present study, the glucose content in the hemolymph and glycogen content in the digestive gland and cephalopedal mass of Biomphalaria tenagophila and Biomphalaria straminea experimentally infected by A...
October 12, 2016: Experimental Parasitology
Laurence Ducharme-Crevier, Michele G Mills, Priya M Mehta, Craig M Smith, Mark S Wainwright
BACKGROUND: The primary objective of this study was to characterize changes in cerebral blood flow measured using transcranial Doppler in children with central nervous system infections. We hypothesized that children with central nervous system infections have abnormal cerebral blood flow, associated with a greater frequency of complications and poor neurological outcome. METHODS: We conducted a single-center, retrospective study of children admitted to the neonatal or pediatric intensive care unit with central nervous system infection and undergoing transcranial Doppler as part of routine care between March 2011 and July 2015...
September 4, 2016: Pediatric Neurology
C Hoyer, P Eisele, A D Ebert, S Schneider, A Gass, M Fatar, K Szabo, A Alonso
BACKGROUND: The term "aseptic meningitis" encompasses cases of meningitis with negative bacterial CSF culture, which predominantly are of viral etiology. While the clinical course is usually benign, complications such as encephalitic involvement resulting in a more severe clinical course may occur. Dysfunction of the blood-brain-barrier (BBB), which is a prerequisite for viral entry into the brain parenchyma, can be approximated using the CSF/serum albumin ratio, readily obtainable in routine CSF analysis...
October 6, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
S Grisariu, I Vaxman, M Gatt, S Elias, B Avni, A Arad, O Pasvolsky, P Raanani, O Paltiel
In recent years, anti-CD20 antibodies have been increasingly used to treat lymphoproliferative and immune disorders. Chronic viral infections are infrequently reported in patients receiving these therapies. Enteroviral infection can cause life-threatening meningoencephalitis and other systemic chronic syndromes in immune deficient patients. We describe the clinical courses and outcomes of 6 patients from 2 tertiary care institutions who developed chronic enteroviral infection with neurological manifestations, after combined chemoimmunotherapy with rituximab for B-cell lymphoma...
October 13, 2016: Hematological Oncology
Tomoya Shibahara, Tomonaga Matsushita, Ryu Matsuo, Yoshihisa Fukushima, Kenji Fukuda, Hiroshi Sugimori, Masahiro Kamouchi, Takanari Kitazono, Tetsuro Ago
Rheumatoid meningoencephalitis (RM) is a rare complication of rheumatoid arthritis (RA). This report describes a 63-year-old man with complaints of high-grade fever, headache, and vomiting for several days before admission. Both his serum and cerebrospinal fluid were positive for anti-cyclic citrullinated peptide (CCP) antibody and rheumatoid factor, and contrast-enhanced fluid-attenuated inversion recovery magnetic resonance imaging (MRI) showed abnormal gadolinium enhancement of the meninges and high-intensity lesions in the subarachnoid spaces...
May 2016: Case Reports in Neurology
Jolanta Florczak-Wyspiańska, Ewa Nawotczyńska, Wojciech Kozubski
Yellow fever (YF) is a mosquito-borne viral hemorrhagic fever, which is a serious and potentially fatal disease with no specific antiviral treatment that can be effectively prevented by an attenuated vaccine (YEL). Despite the long history of safe and efficacious YF vaccination, sporadic case reports of serious adverse events (SAEs) have been reported, including yellow fever vaccine-associated neurotropic disease (YEL-AND). YEL-AND usually appears within one month of YF vaccination, manifesting as meningoencephalitis, Guillain-Barré syndrome (GBS) or acute disseminated encephalomyelitis (ADEM)...
September 22, 2016: Neurologia i Neurochirurgia Polska
F X Han, J H Gao, J H Gai
Hand-foot-mouth disease (HFMD) is a common pediatric disease responsible for the development of rashes or herpes on the hand, foot, and mouth. Severe complications of HFMD include myocarditis, pulmonary edema, aseptic meningoencephalitis, and even death. Therefore, early diagnosis of HFMD is of particular importance. In this study, we determined the clinical value of the combined detection of liver function and high-sensitivity C-reactive protein (hs-CRP) expression in children with HFMD. Three hundred children with HFMD were recruited to this study between July 2013 and July 2015 and divided into the mild and severe HFMD groups (N = 150 per group)...
September 23, 2016: Genetics and Molecular Research: GMR
D K Ajithdoss, M K Torchetti, L Badcoe, D S Bradway, T V Baszler
Highly pathogenic avian influenza (HPAI) is a major viral disease of poultry characterized by acute onset, systemic infection, and rapid death. In January 2015, H5N2 HPAI was identified by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) and gene sequencing as the cause of rapid death in 40 of 390 ring-necked pheasants (approximately 10% mortality), raised in a game bird farm in Washington State. We report clinicopathologic findings and viral antigen distribution in pheasants that died during the outbreak...
September 30, 2016: Veterinary Pathology
Yuta Aizawa, Akihide Koyama, Tomohiko Ishihara, Osamu Onodera, Akihiko Saitoh
BACKGROUND: Human parechovirus type 3 (HPeV3) is an emerging virus that causes sepsis and meningoencephalitis in neonates and young infants. Correct diagnosis of HPeV3 infection is critical in determining appropriate management and predicting patients' clinical course. Real-time reverse transcription PCR (RT-PCR) analysis of serum and/or cerebrospinal fluid (CSF) has been used to diagnose HPeV3 infection; however, the assay detection limits have not been fully evaluated. OBJECTIVES: We tested the hypothesis that droplet digital RT-PCR (RT-ddPCR)-a novel technique that precisely quantitates low-copy target genes by diluting and partitioning samples into compartments-increases the detection rate of HPeV3 RNA as compared with real-time RT-PCR...
September 23, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
Josephine Mbuagbaw, Ahmadou M Jingi, Jean Jacques N Noubiap, Arnaud D Kaze, Jobert Richie N Nansseu, Jean Joel R Bigna, Edvine Wawo Yonta, Kathleen Ngu Blackett
OBJECTIVE: To describe the trends in mortality and the spectrum of disease in HIV-infected and -uninfected inpatients in a population in Yaoundé. DESIGN: A retrospective study. SETTING: Internal Medicine Unit, University Hospital Centre, Yaoundé, Cameroon. PARTICIPANTS: All deaths registered between January 2000 and May 2007 in the unit. MAIN OUTCOMES MEASURES: Sociodemographic characteristics, clinical features and results of all investigations done, cause of death...
September 2016: JRSM Open
Claire L Nicholls, Fiona Parsonson, Lawrence Ek Gray, Adele Heyer, Steven Donohue, Greg Wiseman, Robert Norton
Primary amoebic meningoencephalitis (PAM) is a fulminant, diffuse haemorrhagic meningoencephalitis caused by Naegleria fowleri, with an almost invariably fatal outcome. In Australia and the developed world, PAM remains a rare disease, although it is very likely that large numbers of cases go undetected in developing countries. N. fowleri is a thermophilic, free-living amoeba with a worldwide distribution. It is acquired when contaminated fresh water is flushed into the nose and penetrates the central nervous system via the cribriform plate...
October 3, 2016: Medical Journal of Australia
Kyung-Tae Lee, Yee-Seul So, Dong-Hoon Yang, Kwang-Woo Jung, Jaeyoung Choi, Dong-Gi Lee, Hyojeong Kwon, Juyeong Jang, Li Li Wang, Soohyun Cha, Gena Lee Meyers, Eunji Jeong, Jae-Hyung Jin, Yeonseon Lee, Joohyeon Hong, Soohyun Bang, Je-Hyun Ji, Goun Park, Hyo-Jeong Byun, Sung Woo Park, Young-Min Park, Gloria Adedoyin, Taeyup Kim, Anna F Averette, Jong-Soon Choi, Joseph Heitman, Eunji Cheong, Yong-Hwan Lee, Yong-Sun Bahn
Cryptococcus neoformans is the leading cause of death by fungal meningoencephalitis; however, treatment options remain limited. Here we report the construction of 264 signature-tagged gene-deletion strains for 129 putative kinases, and examine their phenotypic traits under 30 distinct in vitro growth conditions and in two different hosts (insect larvae and mice). Clustering analysis of in vitro phenotypic traits indicates that several of these kinases have roles in known signalling pathways, and identifies hitherto uncharacterized signalling cascades...
2016: Nature Communications
Francesco Drago, Giulia Ciccarese, Arianna Fay Agnoletti, Francesca Sarocchi, Aurora Parodi
Sweet's syndrome (SS) is an inflammatory disease characterized by fever, leucocytosis and distinctive skin lesions that histologically consist of a dermal infiltrate of neutrophils with nuclear fragmentation. Aseptic neutrophilic inflammation may occur also in other organs. Central nervous system involvement in SS, Neuro-Sweet's syndrome (NSS), is rare and reported especially among Asian patients. A systematic review of the literature has been performed to find articles reporting cases of SS with neurological involvement...
September 22, 2016: Acta Neurologica Belgica
M R Wilson, L L Zimmermann, E D Crawford, H A Sample, P R Soni, A N Baker, L M Khan, J L DeRisi
Solid organ transplant patients are vulnerable to suffering neurologic complications from a wide array of viral infections and can be sentinels in the population who are first to get serious complications from emerging infections like the recent waves of arboviruses, including West Nile virus, Chikungunya virus, Zika virus, and Dengue virus. The diverse and rapidly changing landscape of possible causes of viral encephalitis poses great challenges for traditional candidate-based infectious disease diagnostics that already fail to identify a causative pathogen in approximately 50% of encephalitis cases...
September 20, 2016: American Journal of Transplantation
M Levy, M-T Abi-Warde, A-C Rameau, S Fafi-Kremer, Y Hansmann, M Fischbach, L Higel
Tick-borne encephalitis (TBE) is an arbovirus induced by tick-borne encephalitis virus (TBEV) transmitted by tick bite. The disease is rare in France (two to three cases per year) but endemic zones extend from Western Europe to the east coast of Asia (10,000-15,000 cases per year). An 8-year-old boy was admitted to our pediatric ward in Strasbourg (France) for febrile headache with diplopia. Four days after a tick bite, he declared a febrile headache together with maculopapular rash on the elbows, knees, and cheeks...
October 2016: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
Joanne G Wildenbeest, Ines Said, Bregje Jaeger, Reinier M van Hest, Diederik van de Beek, Dasja Pajkrt
Mycoplasma hominis is a commensal organism in the genitourinary tract that can cause life-threatening CNS infections in neonates after intrauterine infection or through vertical transmission during birth. We present a case of an 11-day-old neonate presenting with fever and supporting laboratory evidence of a CNS infection. No systemic maternal infection or maternal genitourinary tract infection occurred at the time of delivery. Empirical treatment was initiated, consisting of amoxicillin, cefotaxime, and aciclovir...
September 15, 2016: Lancet Infectious Diseases
Dídac Casas-Alba, Antonio Martínez-Monseny, Laura Monfort, Carmen Muñoz-Almagro, María Cabrerizo, Àngela Deyà, Cristian Launes
Human parechovirus-3 has been associated with severe clinical manifestations in infants, such as sepsis-like illness and meningoencephalitis. Nevertheless, the vast majority of patients have a favorable outcome. We report the occurrence of this infection in dizygotic infants with extreme hyperferritinemia and a transient impairment of natural-killer cell cytotoxicity.
September 15, 2016: Pediatric Infectious Disease Journal
Anne-Marie Ionescu, Divya Khare, Jay Kavi
A 61-year-old man was admitted with a 1-week history of influenza-like symptoms during a period of increased influenza virus activity. He soon developed type 2 respiratory failure and became increasingly drowsy. He later suffered a convulsive episode in the intensive care unit (ICU) which self-terminated. Initial clinical findings suggested community-acquired pneumonia and meningoencephalitis. However, a detailed history revealed that he was a pet bird-keeper, which raised a suspicion of ornithosis. Chlamydia psittaci DNA was detected in sputum by PCR...
2016: BMJ Case Reports
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