The complete 154-kbp linear double-stranded genomic DNA sequence of herpes simplex virus 2 (HSV-2), consisting of two extended regions of unique sequences bounded by a pair of inverted repeat elements, was published in 1998 and since then has been widely employed in a wide range of studies. Throughout the HSV-2 genome are scattered 150 microsatellites (also referred to as short tandem repeats) of 1- to 6-nucleotide motifs, mainly distributed in noncoding regions. Microsatellites are considered reliable markers for genetic mapping to differentiate herpesvirus strains, as shown for cytomegalovirus and HSV-1. The aim of this work was to characterize 12 polymorphic microsatellites within the HSV-2 genome by use of 3 multiplex PCR assays in combination with length polymorphism analysis for the rapid genetic differentiation of 56 HSV-2 clinical isolates and 2 HSV-2 laboratory strains (gHSV-2 and MS). This new system was applied to a specific new HSV-2 variant recently identified in HIV-1-infected patients originating from West Africa. Our results confirm that microsatellite polymorphism analysis is an accurate tool for studying the epidemiology of HSV-2 infections.
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http://dx.doi.org/10.1128/JCM.01714-13 | DOI Listing |
S Afr J Infect Dis
December 2024
Division of Medical Microbiology, Department of Pathology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Background: Delayed or incorrect treatment of meningitis may result in adverse patient outcomes. However, laboratory testing in resource-limited settings is often limited to conventional diagnostic methods. We explored the utility of syndromic molecular assays for diagnosis.
View Article and Find Full Text PDFNature
January 2025
Department of Neuroscience and Mahoney Institute for Neurosciences, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
Glioblastoma (GBM) infiltrates the brain and can be synaptically innervated by neurons, which drives tumor progression. Synaptic inputs onto GBM cells identified so far are largely short-range and glutamatergic. The extent of GBM integration into the brain-wide neuronal circuitry remains unclear.
View Article and Find Full Text PDFS D Med
September 2024
Avera Medical Group Infectious Disease Specialists, Sioux Falls, South Dakota.
Eczema herpeticum (EH) is a potentially life-threatening condition, especially in the pediatric population, that occurs among patients with atopic dermatitis (AD). AD is a chronic inflammatory skin disorder with a complex pathophysiology that predisposes patients to EH. Herpes simplex virus (HSV) 1 is implicated in 90 % of EH cases and often initially presents with gingivostomatitis.
View Article and Find Full Text PDFJ Oncol Pharm Pract
January 2025
Apollo Institute of Medical Sciences and Research Chittoor, Andhra Pradesh, India.
Background And Aims: Melanoma now presents an average risk of 1 in 50 in the Western world. Talimogene laherparepvec (T-VEC), an FDAapproved oncolytic virus derived from Herpes Simplex Virus type 1 (HSV-1), has proven effective in reducing morbidity and mortality from melanoma but causes adverse effects like chills, fever, exhaustion, and injection site discomfort. Research focuses on combining T-VEC with immune checkpoint inhibitors, such as pembrolizumab, to enhance its efficacy and broaden its application.
View Article and Find Full Text PDFNeurobiol Dis
January 2025
Department of Molecular Genetics & Microbiology, University of Florida College of Medicine, Gainesville, FL 32611, USA.
Abnormal tau phosphorylation is a key mechanism in neurodegenerative diseases. Evidence implicates infectious agents, such as Herpes Simplex Virus 1 (HSV-1), as co-factors in the onset or the progression of neurodegenerative diseases, including Alzheimer's disease. This has led to divergence in the field regarding the contribution of viruses in the etiology of neurodegenerative diseases.
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