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Central nervous system infections

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https://www.readbyqxmd.com/read/28731916/central-nervous-system-fungal-infection-and-acute-lymphoblastic-leukemia-in-children-what-is-the-optimal-duration-of-antifungal-therapy
#1
Harsha P Lashkari, Neil Fernandes, Kishan Alva, Santosh Rai
Invasive fungal infections are rare in children with acute lymphoblastic leukemia. It compromises the antileukemia therapy should it happen. Central nervous system fungal infections carry high mortality. We here report the case of a 6.5-year-old girl who developed multiple central nervous system fungal abscesses possibly due to Aspergillus infection during induction therapy for acute lymphoblastic leukemia who has been successfully managed without compromising antileukemia therapy. She has been receiving antifungal therapy and maintenance chemotherapy for 20 months from diagnosis...
July 20, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28731002/neuropathogenesis-by-chandipura-virus-an-acute-encephalitis-syndrome-in-india
#2
REVIEW
Sourish Ghosh, Anirban Basu
Chandipura virus (CHPV) has been contributing to the rising number of premature deaths due to acute encephalitis syndrome for over a decade in India. CHPV belongs to the family Rhabdoviridae. Neuropathogenesis of CHPV has been well established but the exact route of entry into the central nervous system (CNS) and the triggering factor for neuronal death are still unknown. Rabies virus and vesicular stomatitis virus, which are related closely to CHPV, enter the CNS retrogradely from peripheral or olfactory neurons...
January 2017: National Medical Journal of India
https://www.readbyqxmd.com/read/28730336/serologic-markers-of-autism-spectrum-disorder
#3
REVIEW
T V Khramova, Anna L Kaysheva, Y D Ivanov, T O Pleshakova, I Y Iourov, S G Vorsanova, Y B Yurov, A A Schetkin, A I Archakov
According to WHO data, about 67 million people worldwide are affected by autism, and this number grows by 14% annually. Among the possible causes of autism are genetic modifications, organic lesions of the central nervous system, metabolic disorders, influence of viral and bacterial infections, chemical influence to the mother's body during pregnancy, etc. The conducted research shows that research papers published until today do not name any potential protein markers that meet the requirements of the basic parameters for evaluating the efficiency of disease diagnostics, in particular high sensitivity, specificity, and accuracy...
July 20, 2017: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/28729867/exposure-to-the-epstein-barr-viral-antigen-latent-membrane-protein-1-induces-myelin-reactive-antibodies-in-vivo
#4
Yakov Lomakin, Georgii Pavlovich Arapidi, Alexander Chernov, Rustam Ziganshin, Evgenii Tcyganov, Irina Lyadova, Ivan Olegovich Butenko, Maria Osetrova, Natalia Ponomarenko, Georgy Telegin, Vadim Markovich Govorun, Alexander Gabibov, Alexey Belogurov
Multiple sclerosis (MS) is an autoimmune chronic inflammatory disease of the central nervous system (CNS). Cross-reactivity of neuronal proteins with exogenous antigens is considered one of the possible mechanisms of MS triggering. Previously, we showed that monoclonal myelin basic protein (MBP)-specific antibodies from MS patients cross-react with Epstein-Barr virus (EBV) latent membrane protein 1 (LMP1). In this study, we report that exposure of mice to LMP1 results in induction of myelin-reactive autoantibodies in vivo...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28729142/nocardia-farcinica-brain-abscess-report-of-3-cases
#5
Ana Galacho-Harriero, Pedro D Delgado-López, Maria P Ortega-Lafont, Javier Martín-Alonso, José M Castilla-Díez, Belen Sánchez-Borge
BACKGROUND: Central nervous system nocardial infection is a rarely reported disease that usually affects patients with predisposing and debilitating conditions but also the immunocompetent population. The most common variant affecting the brain is Nocardia farcinica. Management of brain nocardiosis is troublesome and requires consideration of the severity of the underlying systemic disease, the difficulties in identifying the bacterium and the frequent delay in initiating adequate therapy...
July 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28727854/toxoplasma-gondii-entry-association-and-physiological-influence-on-the-central-nervous-system
#6
REVIEW
Oscar A Mendez, Anita A Koshy
Toxoplasma gondii is one of the world's most successful parasites, in part because of its ability to infect and persist in most warm-blooded animals. A unique characteristic of T. gondii is its ability to persist in the central nervous system (CNS) of a variety of hosts, including humans and rodents. How, what, and why T. gondii encysts in the CNS has been the topic of study for decades. In this review, we will discuss recent work on how T. gondii is able to traverse the unique barrier surrounding the CNS, what cells of the CNS play host to T...
July 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28724943/aim2-inflammasome-mediated-pyroptosis-in-enterovirus-a71-infected-neuronal-cells-restricts-viral-replication
#7
Thinesshwary Yogarajah, Kien Chai Ong, David Perera, Kum Thong Wong
Encephalomyelitis is a well-known complication of hand, foot, and mouth disease (HFMD) due to Enterovirus 71 (EV71) infection. Viral RNA/antigens could be detected in the central nervous system (CNS) neurons in fatal encephalomyelitis but the mechanisms of neuronal cell death is not clearly understood. We investigated the role of absent in melanoma 2 (AIM2) inflammasome in neuronal cell death, and its relationship to viral replication. Our transcriptomic analysis, RT-qPCR, Western blot, immunofluorescence and flow cytometry studies consistently showed AIM2 gene up-regulation and protein expression in EV-A71-infected SK-N-SH cells...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28724755/trim33-tif1-%C3%AE-is-essential-for-macrophage-and-neutrophil-mobilisation-to-developmental-or-inflammatory-cues
#8
Doris Lou Demy, Muriel Tauzin, Mylène Lancino, Véronique le Cabec, Michael Redd, Emi Murayama, Isabelle Maridonneau-Parini, Nikolaus Trede, Philippe Herbomel
Macrophages infiltrate and establish in developing organs from an early stage, often before these have become vascularised. Similarly, leukocytes in general can quickly migrate through tissues to any site of wounding. This unique capacity is rooted in their characteristic amoeboid motility, the genetic basis of which is poorly known. Trim33 (Tif1-γ), a nuclear protein that associates with specific DNA binding transcription factors to modulate gene expression, has been found mainly involved in hematopoiesis and gene regulation by TGF-ß...
July 19, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28721050/the-use-of-natalizumab-for-multiple-sclerosis
#9
REVIEW
Rachel Brandstadter, Ilana Katz Sand
Natalizumab is a monoclonal antibody that acts as an α4 integrin antagonist to prevent leukocyte trafficking into the central nervous system. It is US Food and Drug Administration (FDA) approved for the treatment of relapsing-remitting multiple sclerosis (RRMS). Natalizumab demonstrated high efficacy in Phase III trials by reducing the annualized relapse rate, preventing multiple sclerosis (MS) lesion accumulation on magnetic resonance imaging, and decreasing the probability of sustained progression of disability...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28721049/the-potential-role-of-vagus-nerve-stimulation-in-the-treatment-of-hiv-associated-depression-a-review-of-literature
#10
REVIEW
William C Nicholson, Mirjam-Colette Kempf, Linda Moneyham, David E Vance
Depression is the most common comorbidity and neuropsychiatric complication in HIV. Estimates suggest that the prevalence rate for depression among HIV-infected individuals is three times that of the general population. The association between HIV and clinical depression is complex; however, chronic activation of inflammatory mechanisms, which disrupt central nervous system (CNS) function, may contribute to this association. Disruptions in CNS function can result in cognitive disorders, social withdrawal, fatigue, apathy, psychomotor impairment, and sleep disturbances, which are common manifestations in depression and HIV alike...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28719956/a-case-of-ectopic-peritoneal-paragonimiasis-mimicking-diverticulitis-or-abdominal-abscess
#11
Min Jae Kim, Sung-Han Kim, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Jun Hee Woo, Yong Sik Yoon, Kyung Won Kim, Jaeeun Cho, Jong-Yil Chai, Yong Pil Chong
Paragonimiasis is a parasitic disease caused by Paragnonimus species. The primary site of infection is the lung, and extrapulmonary involvement is also reported. When infected with Paragonimus westermani, which is the dominant species in Korea, the central nervous system is frequently involved along with the liver, intestine, peritoneal cavity, retroperitoneum, and abdominal wall. Ectopic paragonimiasis raises diagnostic challenge since it is uncommon and may be confused with malignancy or other inflammatory diseases...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28719951/neuronal-apoptosis-pathological-basis-of-behavioral-dysfunctions-induced-by-angiostrongylus-cantonensis-in-rodents-model
#12
Shiqi Luo, Lisi OuYang, Jie Wei, Feng Wu, Zhongdao Wu, Wanlong Lei, Dongjuan Yuan
Angiostrongylus cantonensis invades the central nervous system (CNS) of humans to induce eosinophilic meningitis and meningoencephalitis and leads to persistent headache, cognitive dysfunction, and ataxic gait. Infected mice (nonpermissive host), admittedly, suffer more serious pathological injuries than rats (permissive host). However, the pathological basis of these manifestations is incompletely elucidated. In this study, the behavioral test, histological and immunohistochemical techniques, and analysis of apoptotic gene expression, especially caspase-3, were conducted...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28719330/case-report-microcephaly-in-twins-due-to-the-zika-virus
#13
Victor S Santos, Sheila J G Oliveira, Ricardo Q Gurgel, Dorothy R R Lima, Cliomar A Dos Santos, Paulo R S Martins-Filho
Recent studies have demonstrated an association between congenital Zika virus (ZIKV) infection and microcephaly; however, to date, there have been no reports on the consequences of ZIKV infection on fetuses in twin pregnancies. Herein, we reported on the first case of a monochorionic diamniotic (MCDA) twin pregnancy having ZIKV-related microcephaly. Our findings suggested that, in an MCDA twin pregnancy, the ZIKV may cause infection in both fetuses, resulting in severe abnormalities in the central nervous system due to neural cell destruction and the disruption of the normal development processes of the brain...
July 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28719042/serotonergic-paraneurons-in-the-female-mouse-urethral-epithelium-and-their-potential-role-in-peripheral-sensory-information-processing
#14
F Aura Kullmann, Huiyi H Chang, Christian Gauthier, Bronagh M McDonnell, Jih-Chao Yeh, Dennis R Clayton, Anthony J Kanai, William C de Groat, Gerard L Apodaca, Lori A Birder
AIM: The mechanisms underlying detection and transmission of sensory signals arising from visceral organs, such as the urethra, are poorly understood. Recently, specialized ACh-expressing cells embedded in the urethral epithelium have been proposed as chemosensory sentinels for detection of bacterial infection. Here we examined the morphology and potential role in sensory signaling of a different class of specialized cells that express serotonin (5-HT), termed paraneurons. METHODS: Urethrae, dorsal root ganglia neurons and spinal cords were isolated from adult female mice and used for immunohistochemistry and calcium imaging...
July 18, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/28715527/screening-criteria-for-ophthalmic-manifestations-of-congenital-zika-virus-infection
#15
Andrea A Zin, Irena Tsui, Julia Rossetto, Zilton Vasconcelos, Kristina Adachi, Stephanie Valderramos, Umme-Aiman Halai, Marcos Vinicius da Silva Pone, Sheila Moura Pone, Joel Carlos Barros Silveira Filho, Mitsue S Aibe, Ana Carolina C da Costa, Olivia A Zin, Rubens Belfort, Patricia Brasil, Karin Nielsen-Saines, Maria Elisabeth Lopes Moreira
Importance: Current guidelines recommend screening eye examinations for infants with microcephaly or laboratory-confirmed Zika virus infection but not for all infants potentially exposed to Zika virus in utero. Objective: To evaluate eye findings in a cohort of infants whose mothers had polymerase chain reaction-confirmed Zika virus infection during pregnancy. Design, Setting, and Participants: In this descriptive case series performed from January 2 through October 30, 2016, infants were examined from birth to 1 year of age by a multidisciplinary medical team, including a pediatric ophthalmologist, from Fernandes Figueira Institute, a Ministry of Health referral center for high-risk pregnancies and infectious diseases in children in Rio de Janeiro, Brazil...
July 17, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28713103/-listeriosis-of-central-nervous-system-in-patients-with-ulcerative-colitis-case-study
#16
Agnieszka Żak-Gołąb, Krzysztof Dąbrowski, Antoni Hrycek
In the recently an increase morbidity inflammatory bowel disease, including ulcerative colitis was observed. The use of purine analogs and their metabolites are associated with a higher incidence of infections in this group of patients. Listeriosis is an infectious disease caused by a relatively anaerobic gram-positive bacteria - Listeria monocytogenes. Common symptoms include fever, nausea, vomiting and diarrhea, but these pathogens can also cause myocarditis, central nervous system infections, including brain abscesses and sepsis...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28711535/infection-or-glioma-the-false-dilemma-of-primary-cns-histiocytic-sarcoma
#17
William Clifton, Oluwaseun Akinduro, Sebastian Lopez-Chiriboga, Dale Alan Whitaker, Ronald Reimer
Primary CNS histiocytic sarcoma (HS) is an extremely rare lymphoproliferative disorder which affects the central nervous system and behaves aggressively. There have been only twenty-seven reported cases of primary CNS HS. The paucity of literature on this entity has made diagnosis and treatment difficult both for the surgeon and pathologist. This is a case of primary CNS HS in a middle-aged female who presented with a supposed cerebellar abscess from an outside institution. The intraoperative frozen pathology was initially interpreted as a high grade glioma, however the final pathology was demonstrated to be histiocytic sarcoma...
July 12, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28705656/impact-of-enteroviral-polymerase-chain-reaction-testing-on-length-of-stay-for-infants-60-days-old-or-younger
#18
Paul L Aronson, Todd W Lyons, Andrea T Cruz, Stephen B Freedman, Pamela J Okada, Alesia H Fleming, Joseph L Arms, Amy D Thompson, Suzanne M Schmidt, Jeffrey Louie, Michael J Alfonzo, Michael C Monuteaux, Lise E Nigrovic
OBJECTIVE: To determine the impact of a cerebrospinal fluid enterovirus polymerase chain reaction (PCR) test performance on hospital length of stay (LOS) in a large multicenter cohort of infants undergoing evaluation for central nervous system infection. STUDY DESIGN: We performed a planned secondary analysis of a retrospective cohort of hospitalized infants ≤60 days of age who had a cerebrospinal fluid culture obtained at 1 of 18 participating centers (2005-2013)...
July 10, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28701405/propagation-of-astrovirus-va1-a-neurotropic-human-astrovirus-in-cell-culture
#19
Andrew B Janowski, Irma K Bauer, Lori R Holtz, David Wang
Astrovirus VA1/HMO-C (VA1; mamastrovirus 9) is a recently discovered astrovirus genotype that is divergent from the classic human astroviruses (mamastrovirus 1). The gastrointestinal tract is presumed to be the primary site of infection and pathogenicity for astroviruses. However, VA1 has been independently detected in brain tissue of five cases of human encephalitis. Studies of the pathogenicity of VA1 are currently impossible because there are no reported cell culture systems or in vivo models that support VA1 infection...
July 12, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28700657/increased-transgene-expression-level-of-rabies-virus-vector-for-transsynaptic-tracing
#20
Shinya Ohara, Yasuhiro Sota, Sho Sato, Ken-Ichiro Tsutsui, Toshio Iijima
Viral vectors that can infect neurons transsynaptically and can strongly express foreign genes are useful for investigating the organization of neural circuits. We previously developed a propagation-competent rabies virus (RV) vector based on a highly attenuated HEP-Flury strain (rHEP5.0-CVSG), which selectively infects neurons and propagates between synaptically connected neurons in a retrograde direction. Its relatively low level of transgene expression, however, makes immunostaining necessary to visualize the morphological features of infected neurons...
2017: PloS One
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