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https://www.readbyqxmd.com/read/29354215/the-role-of-biopsies-and-autopsies-in-the-diagnosis-of-cognitive-impairment-with-emphasis-on-small-vessel-diseases-a-critical-appraisal-enriched-by-personal-experience
#1
Leila Chimelli
Acquired and hereditary microangiopathies cause cerebral small vessel diseases (CSVD) that impair cognition. The most frequent is primary angiitis of the CNS (PACNS), whose diagnosis remains challenging, requiring a multidisciplinary approach. Secondary vasculitis, CADASIL, miscellaneous microangiopathies and lymphomas, also cause cognitive impairment. Despite the fact that the need for biopsy has decreased in the era of new neuroimaging methods, biopsies that include small leptomeningeal and parenchymal arterial vessels still remain the gold standard to diagnose PACNS and other CSVD, and to exclude mimics such as infections and malignancies...
October 2017: Dementia & Neuropsychologia
https://www.readbyqxmd.com/read/29352287/ifn%C3%AE-inhibits-g-csf-induced-neutrophil-expansion-and-invasion-of-the-cns-to-prevent-viral-encephalitis
#2
Chandran Ramakrishna, Edouard M Cantin
Emergency hematopoiesis facilitates the rapid expansion of inflammatory immune cells in response to infections by pathogens, a process that must be carefully regulated to prevent potentially life threatening inflammatory responses. Here, we describe a novel regulatory role for the cytokine IFNγ that is critical for preventing fatal encephalitis after viral infection. HSV1 encephalitis (HSE) is triggered by the invasion of the brainstem by inflammatory monocytes and neutrophils. In mice lacking IFNγ (GKO), we observed unrestrained increases in G-CSF levels but not in GM-CSF or IL-17...
January 19, 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29348988/anal-squamous-cell-carcinoma-in-a-patient-with-myasthenia-gravis-is-immunosuppression-the-main-underlying-etiology
#3
Muhammad Masab, Muhammad W Saif
Patients who are immunocompromised by diseases such as human immunodeficiency virus (HIV) infection are more prone to develop some malignancies such as Kaposi's sarcoma and central nervous system (CNS) lymphomas. Historically, anal squamous cell carcinoma (SCC) was also included on the list as an acquired immunodeficiency syndrome (AIDs)-defining cancer.  Similarly, compromised immune disorders including severe immunosuppression, haematologic malignancies, and solid organ transplantation have been identified as important risk factors for the development of anal SCC...
November 15, 2017: Curēus
https://www.readbyqxmd.com/read/29347976/intracisternal-tuberculoma-a-refractory-type-of-tuberculoma-indicating-surgical-intervention
#4
Fanfan Chen, Lei Chen, Yongfu Cao, Yongjun Yi, Jingwen Zhuang, Wuhua Le, Wei Xie, Lanbo Tu, Peng Li, Yimin Fang, Ling Li, Yuqing Kou, Kaikai Fu, Hua He, Hongbin Ju
BACKGROUND: Central nervous system (CNS) tuberculoma is a rare disease with severe neurological deficits. This retrospective research is to review the data of patients diagnosed as CNS tuberculoma. Surgeries were performed in all patients. The clinical features especially the neurological image and the anatomical characters of the tuberculomas were concerned. METHODS: Totally 11 patients diagnosed as CNS tuberculoma were admitted in Guangzhou First People's Hospital (7cases) and Changzheng Hospital (4 cases) during 2006-2015...
January 18, 2018: BMC Neurology
https://www.readbyqxmd.com/read/29344259/lesions-of-the-central-nervous-system-in-leukemia-pathological-and-magnetic-resonance-imaging-features-at-presentation-in-14-patients
#5
Jing Liu, Yaming Wang, Xuefei Sun, Shuo Liu, Zhenkun Yu, Nan Ji, Shengjun Sun, Yuanbo Liu
The present study aimed to characterize the specific pathology and magnetic resonance imaging (MRI) findings observed in patients with leukemia with central nervous system (CNS) lesions, and to determine their value in the management of such patients. Lesions of the CNS were observed during and following treatment of leukemia. The data from stereotactic biopsy-proven pathology (12 patients) and MRI examinations (14 patients) were retrospectively evaluated. Proton-magnetic resonance-spectroscopy was performed in three patients...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343258/mass-spectrometric-profiling-of-cerebrospinal-fluid-reveals-metabolite-biomarkers-for-cns-involvement-in-varicella-zoster-virus-reactivation
#6
Maike Kuhn, Kurt-Wolfram Sühs, Manas K Akmatov, Frank Klawonn, Junxi Wang, Thomas Skripuletz, Volkhard Kaever, Martin Stangel, Frank Pessler
BACKGROUND: Varicella zoster virus (VZV) reactivation spans the spectrum from uncomplicated segmental herpes zoster to life-threatening disseminated CNS infection. Moreover, in the absence of a small animal model for this human pathogen, studies of pathogenesis at the organismal level depend on analysis of human biosamples. Changes in cerebrospinal fluid (CSF) metabolites may reflect critical aspects of host responses and end-organ damage in neuroinfection and neuroinflammation. We therefore applied a targeted metabolomics screen of CSF to three clinically distinct forms of VZV reactivation and infectious and non-infectious disease controls in order to identify biomarkers for CNS involvement in VZV reactivation...
January 17, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29340592/neuroimmunomodulators-in-neuroborreliosis-and-lyme-encephalopathy
#7
Elizabeth A Eckman, Javier Pacheco-Quinto, Aimee R Herdt, John J Halperin
Background: Lyme encephalopathy, characterized by non-specific neurobehavioral symptoms including mild cognitive difficulties, may occur in patients with systemic Lyme disease and is often mistakenly attributed to CNS infection. Identical symptoms occur in innumerable other inflammatory states and may reflect the effect of systemic immune mediators on the CNS. Methods: Multiplex immunoassays were used to characterize the inflammatory profile in serum and CSF from Lyme and non-Lyme patients with a range of symptoms to determine if there are specific markers of active CNS infection (neuroborreliosis), or systemic inflammatory mediators associated with neurobehavioral syndromes...
January 11, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29338732/transcriptional-profile-and-epstein-barr-virus-infection-status-of-laser-cut-immune-infiltrates-from-the-brain-of-patients-with-progressive-multiple-sclerosis
#8
Caterina Veroni, Barbara Serafini, Barbara Rosicarelli, Corrado Fagnani, Francesca Aloisi
BACKGROUND: It is debated whether multiple sclerosis (MS) might result from an immunopathological response toward an active Epstein-Barr virus (EBV) infection brought into the central nervous system (CNS) by immigrating B cells. Based on this model, a relationship should exist between the local immune milieu and EBV infection status in the MS brain. To test this hypothesis, we analyzed expression of viral and cellular genes in brain-infiltrating immune cells. METHODS: Twenty-three postmortem snap-frozen brain tissue blocks from 11 patients with progressive MS were selected based on good RNA quality and prominent immune cell infiltration...
January 16, 2018: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29333935/association-between-human-papilloma-virus-hpv-vaccination-and-risk-of-multiple-sclerosis-a-systematic-review
#9
Angela Meggiolaro, Giuseppe Migliara, Giuseppe La Torre
INTRODUCTION: The vaccination against Humanpapilloma Virus (HPV) is an effective strategy to prevent high-risk HPV infection and subsequent cervical carcinogenesis. Although the safety profile has been ascertained, the relation with the development of central nervous system (CNS) autoimmune disorders (AD) appears still controversial. Multiple Sclerosis (MS) is the most common cause of chronic neurological impairment in young people, typically striking females. The main purpose of this review was to assess the association between HPV vaccination and MS...
January 15, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29333566/principles-of-management-of-central-nervous-system-infections
#10
REVIEW
Sunit Singhi, Suresh Kumar Angurana
CNS infections in children are medical emergency and are associated with high mortality and morbidity. For diagnosis, a high index of suspicion is required. Clinical assessment should be supplemented by laboratory investigations including CSF Gram stain and cultures, blood culture, PCR on CSF, serological tests, and imaging. Commonly associated life threatening complications include coma, seizure, raised intracranial pressure (ICP), focal deficits, shock, respiratory failure, and fluid and electrolyte abnormalities...
January 15, 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29330881/cocaine-and-hiv-1-tat-disrupt-cholesterol-homeostasis-in-astrocytes-implications-for-hiv-associated-neurocognitive-disorders-in-cocaine-user-patients
#11
Bianca Cotto, Kalimuthusamy Natarajaseenivasan, Kimberly Ferrero, Leroy Wesley, Matthew Sayre, Dianne Langford
Cholesterol synthesis and clearance by astrocytes are tightly regulated to maintain constant levels within the brain. In this context, liver X receptors (LXRs) are the master regulators of cholesterol homeostasis in the central nervous system (CNS). Increasing levels of cholesterol in astrocytes trigger LXR activation leading to the transcription of target genes involved in cholesterol trafficking and efflux, including apolipoprotein E, cytochrome P450 enzymes, sterol regulatory binding protein, and several ATP-binding cassette transporter proteins...
January 13, 2018: Glia
https://www.readbyqxmd.com/read/29329410/1918-h1n1-influenza-virus-replicates-and-induces-pro-inflammatory-cytokine-responses-in-extra-respiratory-tissues-of-ferrets
#12
Emmie de Wit, Jurre Siegers, Jacqueline M Cronin, Sarah Weatherman, Judith van den Brand, Lonneke M Leijten, Peter van Run, Lineke Begeman, Henk-Jan van den Ham, Arno C Andeweg, Trenton Bushmaker, Dana P Scott, Greg Saturday, Vincent J Munster, Heinz Feldmann, Debby van Riel
Background: The 1918 Spanish H1N1 influenza pandemic was the most severe recorded influenza pandemic with an estimated 20-50 million deaths worldwide. Even though it is known that influenza viruses can cause extra-respiratory tract complications-which are often severe or even fatal- the potential contribution of extra-respiratory tissues to the pathogenesis of 1918 H1N1 virus infection has not been studied comprehensively. Methods: Here, we performed a time course study in ferrets inoculated intranasally with 1918 H1N1 virus, with special emphasis on the involvement of extra-respiratory tissues...
January 10, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29323725/serum-igg-antibodies-from-healthy-subjects-up-to-100-years-old-react-to-jc-polyomavirus
#13
Ilaria Bononi, Elisa Mazzoni, Silvia Pietrobon, Marco Manfredini, Elena Trregiani, Marika Rossini, Francesca Lotito, Giovanni Guerra, Paola Rizzo, Fernanda Martini, Mauro Tognon
JC polyomavirus (JCPyV) was identified in 1971 in the brain tissue of a patient (J.C.) affected by the progressive multifocal leukoencephalopathy (PML). JCPyV encodes for the oncoproteins large T antigen (Tag) and small t-antigen (tag). These oncoproteins are responsible of the cell transformation and tumorigenesis in experimental animals. JCPyV is ubiquitous in human populations. After the primary infection, which is usually asymptomatic, JCPyV remains lifelong in the host in a latent phase. Its reactivation may occur in heathy subjects and immunocompromised patients...
January 11, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29322494/common-primary-and-secondary-causes-of-headache-in-the-elderly
#14
Tara L Sharma
OBJECTIVE/BACKGROUND: Headache in the elderly, defined as individuals aged 65 and older, although less prevalent than younger individuals, can present as a diagnostic challenge, given the increase in potentially fatal diseases within this population. METHODS: These individuals require a complete history, neurological examination, and assessment of potential secondary causes of headaches. RESULTS: Secondary causes include temporal or giant cell arteritis, subdural hematomas, central nervous system (CNS) tumors, strokes, and CNS infections...
January 11, 2018: Headache
https://www.readbyqxmd.com/read/29321331/germline-igm-is-sufficient-but-not-required-for-antibody-mediated-alphavirus-clearance-from-the-central-nervous-system
#15
Voraphoj Nilaratanakul, Jie Chen, Oanh Tran, Victoria K Baxter, Elizabeth M Troisi, Jane X Yeh, Diane E Griffin
Sindbis virus (SINV) infection of neurons in the brain and spinal cord in mice provides a model system for investigating recovery from encephalomyelitis and antibody-mediated clearance of virus from the central nervous system (CNS). To determine the roles of IgM and IgG in recovery, we compared the responses of immunoglobulin-deficient activation-induced adenosine deaminase (AID)-/-, secretory IgM (sIgM)-/- and AID-/- sIgM-/- double knock out (DKO) mice with wild-type (WT) C57BL/6 mice for disease, clearance of infectious virus and viral RNA from brain and spinal cord, antibody responses and B cell infiltration into the CNS...
January 10, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29319809/increased-microglial-csf1r-expression-in-the-siv-macaque-model-of-hiv-cns-disease
#16
Audrey C Knight, Samuel A Brill, Suzanne E Queen, Patrick M Tarwater, Joseph L Mankowski
Chronic microglial activation and associated neuroinflammation are key factors in neurodegenerative diseases including HIV-associated neurocognitive disorders. Colony stimulating factor 1 receptor (CSF1R)-mediated signaling is constitutive in cells of the myeloid lineage, including microglia, promoting cell survival, proliferation, and differentiation. In amyotrophic lateral sclerosis and Alzheimers disease, CSF1R is upregulated. Inhibiting CSF1R signaling in animal models of these diseases improved disease outcomes...
January 8, 2018: Journal of Neuropathology and Experimental Neurology
https://www.readbyqxmd.com/read/29319242/clinical-diversity-of-cns-cryptococcosis
#17
J M Koshy, S Mohan, D Deodhar, M John, A Oberoi, A Pannu
Background: Though cryptococcal meningitis (CM) is recognized as a disease of the immunocompromised, studies have implicated that it also affect immunocompetent patients. Methodology: This was a cross sectional study conducted in the Department of Medicine of a tertiary teaching institution in North India. All the patients diagnosed with CM on the basis of detection of cryptococcal antigen or the presence of capsulated budding yeast cells on India ink preparation, from April 2009 to March2015 were included in the study...
October 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29315142/enteroviral-encephalitis-in-a-child-with-cns-relapse-of-burkitt-leukemia-treated-with-rituximab
#18
Najma Shaheen, Francis Mussai
A boy with central nervous system relapse of Burkitt leukemia developed fever and neurological symptoms and cognitive impairment. He had received multi-drug chemotherapy including rituximab. Enterovirus (EV) was detected in cerebrospinal fluid by polymerase chain reaction, and magnetic resonance imaging findings were consistent with viral infection. The patient was treated with intravenous immunoglobulin and within 1 month cleared his EV. Rituximab can cause a profound B-cell deficiency predisposing patients to infections including EV encephalitis...
January 8, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29313587/hereditary-haemorrhagic-telangiectasia-with-severe-anemia-and-recurrent-cns-infections
#19
Nrushen Peesapati, Pbpr Naidu, S Sunitha, P V Sivaram
Hereditary Haemorrhagic Telangiectasia, also known as Osler-Rendu-Weber disease is a rare autosomal dominant disorder affecting small vessels of multiple systems whose main pathological change is the presence of abnormal arteriovenous communications. Usually presents as skin and mucosal telangiectasias, epistaxis, gastrointestinal bleeding and visceral arteriovenous malformations. Although the epistaxis and gastrointestinal blood loss can result in anaemia, patients with hereditary haemorrhagic telangiectasia rarely presents as severe anaemia1 or CNS infections...
September 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29311619/in-situ-immune-response-and-mechanisms-of-cell-damage-in-central-nervous-system-of-fatal-cases-microcephaly-by-zika-virus
#20
Raimunda S S Azevedo, Jorge R de Sousa, Marialva T F Araujo, Arnaldo J Martins Filho, Bianca N de Alcantara, Fernanda M C Araujo, Maria G L Queiroz, Ana C R Cruz, Beatriz H Baldez Vasconcelos, Jannifer O Chiang, Lívia C Martins, Livia M N Casseb, Eliana V da Silva, Valéria L Carvalho, Barbara C Baldez Vasconcelos, Sueli G Rodrigues, Consuelo S Oliveira, Juarez A S Quaresma, Pedro F C Vasconcelos
Zika virus (ZIKV) has recently caused a pandemic disease, and many cases of ZIKV infection in pregnant women resulted in abortion, stillbirth, deaths and congenital defects including microcephaly, which now has been proposed as ZIKV congenital syndrome. This study aimed to investigate the in situ immune response profile and mechanisms of neuronal cell damage in fatal Zika microcephaly cases. Brain tissue samples were collected from 15 cases, including 10 microcephalic ZIKV-positive neonates with fatal outcome and five neonatal control flavivirus-negative neonates that died due to other causes, but with preserved central nervous system (CNS) architecture...
January 8, 2018: Scientific Reports
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