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A 68-year-old woman with a history of schizophrenia developed coronavirus disease (COVID)-19 and was transferred to our hospital. Despite treatment, she died of respiratory failure 16 days after the onset. At the time of autopsy, polymerase chain reaction (PCR) for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) RNA using swabs from the nasopharynx and the lung was positive; however, the cerebrospinal fluid was negative. An autopsy showed diffuse alveolar damage and recent multiple cerebral infarcts. Acute splenitis was observed with thrombi adhering to the vascular endothelium in areas of severe neutrophilic infiltration. Immunohistochemistry using an antibody against the SARS-CoV-2 nucleocapsid showed immunoreactivity along the hyaline membrane of the lung; however, the antibody showed no immunoreactivity in the medulla, the thalamus, the frontal lobe, and the pituitary. Future pathologic studies should clarify the mechanisms involved in a variety of clinical and pathological changes related to COVID-19.
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http://dx.doi.org/10.31662/jmaj.2021-0178 | DOI Listing |
Vet Res Commun
September 2025
Department of Botany and Zoology, Faculty of Science, Masaryk University, Brno, Czech Republic.
Tenrecs (Afrosoricida: Tenrecidae) are insectivorous mammals endemic to Madagascar, currently facing population declines due to habitat loss and subsistence hunting. Emerging infectious diseases, including parasitic infections, may pose additional threats. A comparable situation has been observed in Algerian hedgehogs (Atelerix algirus) in Mallorca, where the invasive nematode Angiostrongylus cantonensis has been associated with severe neuropathology.
View Article and Find Full Text PDFFront Neurol
August 2025
Department of Pediatric Neuroscience, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.
Background: Pediatric Huntington's disease (PHD), a rare and severe form of juvenile-onset Huntington's disease (JOHD), is associated with highly expanded CAG repeats in the gene and a rapidly progressive neurodegenerative course. Recent studies have suggested that glucose metabolism may be impaired in PHD due to reduced expression of glucose transporters in the brain, resembling aspects of GLUT1 Deficiency Syndrome (GLUT1DS).
Methods: We investigated glucose metabolism in two pediatric patients with genetically confirmed PHD (CAG repeats: 76 and 79) referred to our tertiary care center.
J Neural Transm (Vienna)
September 2025
Edmond J. Safra Program in Parkinson's Disease, the Rossy Progressive Supranuclear Palsy Centre, and the Morton and Gloria Shulman Movement Disorders Clinic, Toronto Western Hospital, Toronto, ON, Canada.
Parkinson's disease (PD) is increasingly recognized as a heterogeneous neurodegenerative entity with diverse clinical presentations, genetic contributors, and neuropathological features. Central to its pathogenesis is misfolded and aggregated α-synuclein, which collectively form Lewy pathology. Recent advances in biomarker and genetic research have enabled biologically grounded models of PD classification, diagnosis and staging.
View Article and Find Full Text PDFActa Neuropathol
September 2025
Department of Laboratory Medicine and Pathology, University of Washington, 325 9th Ave, Seattle, WA, 98104, USA.
Early onset familial Alzheimer's disease (EOFAD) is rare compared to sporadic AD, but dominant variants in genes involved in amyloid β (Aβ) processing are well-described. One such variant is in the presenilin 2 (PSEN2) gene, N141I, and was first described in a family with Volga German descent. Separately, individuals with Down syndrome (DS) are also at risk for early onset AD, having an extra copy of an amyloid precursor protein gene.
View Article and Find Full Text PDFNeural Regen Res
September 2025
Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan Province, China.
As a class of bioactive substances that play important roles in a variety of physiological and pathological processes, prostaglandins have attracted increasing research attention. Published studies have identified the molecular characteristics of prostaglandins in peripheral organs, the enzymes involved in prostaglandin biosynthesis, and prostaglandin receptors. Some studies have also explored the characteristics of prostaglandins and their functions in the central nervous system.
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