We investigated formalin-fixed postmortem brain tissue from the hippocampus region of 18 AD cases and 11 age-matched controls using a polyclonal antibody against Ljungan virus (LV) capsid protein 1. Evidence of a LV antigen was found in all AD cases but in none of the control specimens ( < 0.0001). The antibodies reacted with neurons and astrocytes and also showed distinct positive reaction in the amyloid/neuritic plaques. The possible role of an incompletely characterized picornavirus as the etiologic agent in AD open up the possibility of treatment with antiviral therapy directed against picornaviruses. The positive result of such treatment in a small number of patients is presented separately back to back to this report.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7306919 | PMC |
http://dx.doi.org/10.3233/ADR-200174 | DOI Listing |
Bats are reservoir hosts for numerous well-known zoonotic viruses, but their broader virus-hosting capacities remain understudied. are an order of enteric viruses known to cause disease across a wide range of mammalian hosts, including Hepatitis A in humans and foot-and-mouth disease in ungulates. Host-switching and recombination drive the diversification of worldwide.
View Article and Find Full Text PDFGene
January 2025
National Institute of Animal Biotechnology, Hyderabad, Telangana 500032, India; Regional Center for Biotechnology (RCB), Faridabad, Haryana, India. Electronic address:
Duck viral hepatitis (DVH) caused by duck hepatitis A virus (DHAV) is a highly contagious and economically important disease of ducklings worldwide. In many parts of the globe, disease outbreaks are reported in spite of vaccinations, probably due to antigenic diversity among DHAV genotypes. We previously reported the first isolation of DHAV-2 (Genotype -2) from ducklings in Tamil Nadu, India.
View Article and Find Full Text PDFFood Environ Virol
January 2025
Laboratorio de Ecología Viral y Virus Zoonóticos, Unidad Académica de Bacteriología y Virología, Instituto de Higiene, Facultad de Medicina, Universidad de la República, Av. Alfredo Navarro 3051, 11600, Montevideo, Uruguay.
Human respiratory and enteric viruses are responsible for substantial morbidity and mortality worldwide. Wastewater-based epidemiology utilizing next-generation sequencing serves as an effective tool for monitoring viral circulation dynamics at the community level. However, these complex environmental samples are often laden with other microorganisms and host genomic material, which can hinder the sensitivity of viral detection.
View Article and Find Full Text PDFSaudi Med J
January 2025
From the Department of Pharmacognosy and Pharmaceutical Chemistry (Aljohani), College of Pharmacy; from the College of Pharmacy (Maghrabi, Alrehili, Alharbi, Alsihli, Alharthe, Albladi, Alosaimi, Albadrani); from the Department of Pharmacology and Toxicology (Miski, Elbadawy, Alrehaili), College of Pharmacy, Taibah University, Al-Medinah Al-Munawarah, from the Departmet of Chemistry (Hussein), Collage of Science, Jouf University, Aljouf, Kingdom of Saudi Arabia; from the Graduate School of Bioresource and Bioenvironmental Science (Abdelkarem), Kyushu University, Kyushu, Japan; from the Department of Pharmacognosy (Abdelkarem), Faculty of Pharmacy; and from the Department of Chemistry (Hussein), Faculty of Science, Al-Azhar University, Assiut, Egypt.
Objectives: To investigate the phytochemical composition of Ajwa date extract and evaluate its antiviral activity and mechanism of action.
Methods: High perfomance liquid chromatography, gas chromatography-mass spectrometry, and liquid chromatography-mass spectrometry were used to analyze the phytochemical profile of Ajwa date extract. The antiviral activity was assessed using the MTT colorimetric assay against herpes simplex virus type I (HSV-I) and coxsackievirus B4 (CVB-4).
Nucleic Acids Res
January 2025
Laboratory of Epigenetic Regulations, Institute of Molecular Genetics of the Czech Academy of Sciences, Videnska 1083, 142 20, Prague, Czech Republic.
In RNA interference (RNAi), long double-stranded RNA is cleaved by the Dicer endonuclease into small interfering RNAs (siRNAs), which guide degradation of complementary RNAs. While RNAi mediates antiviral innate immunity in plants and many invertebrates, vertebrates have adopted a sequence-independent response and their Dicer produces siRNAs inefficiently because it is adapted to process small hairpin microRNA precursors in the gene-regulating microRNA pathway. Mammalian endogenous RNAi is thus a rudimentary pathway of unclear significance.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!