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Background: The genus Astragalus is the largest and one of the most diverse genera of flowering plants, particularly in the Northern Hemisphere, with a significant concentration of species in the Irano-Turanian region. Within this genus, section Hymenostegis is notable for its complexity and high levels of endemism, especially in northwestern Iran. During recent field explorations in West Azarbaijan province, a distinct population of Astragalus was identified, differing from known species within section Hymenostegis.
View Article and Find Full Text PDFResponse strength and latencies of auditory steady-state responses from age six.
Int J Audiol
January 2025
Department of Neurosciences, Research Group ExpORL, KU Leuven, Leuven, Belgium.
Objective: Auditory-steady state responses (ASSRs) to stimuli modulated by different frequencies may differ between children and adults. These differences in response characteristics or latency may reflect developmental changes. This study investigates age-related differences in response strength, latencies, and hemispheric laterality indices of ASSRs for different modulation frequencies.
View Article and Find Full Text PDFArticle Synopsis
- The study investigates uranium (U/U) ratios in environmental samples from the Pamir region to evaluate the influence of human nuclear activity on this remote area.
- The U/U ratios found (ranging from 0.007256 to 0.007263) suggest a slight enrichment of uranium, indicating the presence of anthropogenic materials, particularly in cryoconite compared to soil and water.
- The findings also suggest that while the area shows subtle enrichment of uranium, it remains relatively clean from local contamination, with environmental uranium largely resulting from historical global nuclear fallout rather than local sources.
Epstein-Barr virus, vitamin D and the immune response: connections with consequences for multiple sclerosis.
Front Immunol
January 2025
Department of Medical Microbiology and Immunology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates.
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system (CNS) with no definitive trigger. However, epidemiological studies indicate that environmental factors, such as infection with Epstein-Barr virus (EBV) and low vitamin D (Vit D) levels in genetically predisposed individuals, are important risk factors. One leading proposal is that EBV triggers MS via mechanisms such as molecular mimicry, where activated autoreactive B and T lymphocytes mistakenly target self-antigens.
View Article and Find Full Text PDFThe relationship between electric field strength induced by electroconvulsive therapy and cognitive and antidepressant outcomes.
Neuropsychopharmacology
January 2025
Department of Psychiatry, Radboud University Medical Center, Nijmegen, The Netherlands.
Electroconvulsive therapy (ECT) is an effective treatment for depression but is often associated with cognitive side effects. In patients, ECT-induced electric field (E-field) strength across brain regions varies significantly due to anatomical differences, which may explain individual differences in cognitive side effects. We examined the relationship between regional E-field strength and change in verbal fluency score (i.
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