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Neurochemical Alterations Linked to Persistent COVID-19-Induced Anosmia: Probing Into Orbitofrontal Cortex by Magnetic Resonance Spectroscopy.
Acad Radiol
January 2025
Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Otorhinolaryngology Research Center, Guilan University of Medical Sciences, Rasht, Iran (M.H.D., S.N.). Electronic address:
Background: While many COVID-19-induced anosmia patients recover their sense of smell within a few months, a substantial number of them continue to experience olfactory impairment. In our primary study, the metabolic patterns in orbitofrontal cortex (OFC) were observed to exhibit more alterations than other regions. Hence, this study specifically probes into alterations within OFC region in subjects with persistent COVID-19-induced anosmia.
View Article and Find Full Text PDFBiologic Treatments for Chronic Rhinosinusitis With Nasal Polyps (CRSwNP): A Comparative Review of Efficiency and Risks.
Cureus
January 2025
Department of Otolaryngology, Iuliu Hațieganu University of Medicine and Pharmacy, Cluj-Napoca, ROU.
Chronic rhinosinusitis with nasal polyps (CRSwNP) is a chronic inflammatory condition of the nasal passages and sinuses, often characterized by nasal congestion, loss of smell, facial pressure, and nasal discharge. Conventional treatments, such as corticosteroids and endoscopic sinus surgery (ESS), often provide only temporary relief, with frequent recurrence of symptoms. For patients with severe, refractory CRSwNP, biologic therapies have emerged as a promising treatment option.
View Article and Find Full Text PDFAge-dependent phenotypes of cognitive impairment as sequelae of SARS-CoV-2 infection.
Front Aging Neurosci
January 2025
Laboratory for Brain Development, Modulation and Repair, Glenn Biggs Institute for Alzheimer's and Neurodegenerative Diseases, University of Texas Health San Antonio, San Antonio, TX, United States.
Cognitive changes associated with PASC may not be uniform across populations. We conducted individual-level pooled analyses and meta-analyses of cognitive assessments from eight prospective cohorts, comprising 2,105 patients and 1,432 controls from Argentina, Canada, Chile, Greece, India, Italy, Russia, and the UK. The meta-analysis found no differences by country of origin.
View Article and Find Full Text PDFUnlabelled: The integration of olfactory and spatial information is critical for guiding animal behavior. The lateral entorhinal cortex (LEC) is reciprocally interconnected with cortical areas for olfaction and the hippocampus and thus ideally positioned to encode odor-place associations. Here, we used mini-endoscopes to record neural activity in the mouse piriform cortex (PCx) and LEC.
View Article and Find Full Text PDFParosmia: Pathophysiology and Management.
Curr Allergy Asthma Rep
January 2025
Smell and Taste Clinic, Department of Otorhinolaryngology, Technical University of Dresden, Dresden, Germany.
Purpose Of Review: Parosmia is a qualitative olfactory disorder in which there is a mismatch between the memory of an odor and the actual experience triggered by an odor. There has been a surge in parosmia-related publications since the COVID-19 pandemic. This review summarizes the latest clinical findings, theories on pathophysiology and potential treatment options.
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