The habenula (Hb) is involved in many natural human behaviors, and the relevance of its alterations in size and neural activity to several psychiatric disorders and addictive behaviors has been presumed and investigated in recent years using magnetic resonance imaging (MRI). Although the Hb is small, an increasing number of studies have overcome the difficulties in MRI. Conventional structural-based imaging also has great defects in observing the Hb contrast with adjacent structures. In addition, more and more attention should be paid to the Hb's functional, structural, and quantitative imaging studies. Several advanced MRI methods have recently been employed in clinical studies to explore the Hb and its involvement in psychiatric diseases. This review summarizes the anatomy and function of the human Hb; moreover, it focuses on exploring the human Hb with noninvasive MRI approaches, highlighting strategies to overcome the poor contrast with adjacent structures and the need for multiparametric MRI to develop imaging markers for diagnosis and treatment follow-up. LEVEL OF EVIDENCE: 3 TECHNICAL EFFICACY STAGE: 2.
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http://dx.doi.org/10.1002/jmri.28830 | DOI Listing |
J Med Case Rep
January 2025
Department of Pathology and Laboratories, University Hospital Fundación Santa Fe de Bogotá, Bogotá, DC, Colombia.
Background: Adenoid cystic carcinoma of the breast is a rare subtype, constituting less than 3.5% of primary breast carcinomas. Despite being categorized as a type of triple-negative breast cancer, it generally has a favorable prognosis.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
NYU Grossman School of Medicine, New York, NY, USA.
Background: Down syndrome (DS) is strongly associated with Alzheimer's disease (AD), attributable to APP overexpression, displaying common features with early-onset AD (EOAD) and late-onset AD (LOAD) like Amyloid-β (Aβ) and tau pathology. Here, we evaluated the Aβ plaques proteome of DS, EOAD and LOAD.
Method: We used unbiased localized proteomics to analyze amyloid plaques and the adjacent plaque-devoid tissue ('AD non-plaque') from post-mortem paraffin-embedded tissues in three subtypes of AD (n = 20/group): DS (59.
Alzheimers Dement
December 2024
University of Pennsylvania, Philadelphia, PA, USA.
Background: Alzheimer's disease (AD) is characterized by neocortical dissemination of neurofibrillary tangles (NFTs) while primary age-related tauopathy (PART) has NFTs largely confined to the hippocampus and adjacent structures. Thus, PART and AD represent two extremes of a spectrum of NFT spread. We investigated epigenetic mechanisms of interindividual variation in NFT spread.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Department of Neurology, University of Pennsylvania, Philadelphia, PA, USA.
Background: Limbic predominant age-related TDP-43 encephalopathy (LATE) is a common co-pathology in Alzheimer's disease (AD) and is associated with advanced cognitive impairment and severe atrophy in limbic regions. In AD, various maturation stages for tau neurofibrillary tangles have been characterized and can be selectively marked by monoclonal tau antibodies, providing insight into disease progression. Indeed, AD tau pathology progresses from an early "paperclip" conformation, marked by the MC1 epitope to a C-terminally truncated form of tau, marked by MN423 epitope.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Texas A&M University Health, Bryan, TX, USA.
Background: Our studies show that the small non-coding RNA, mir20a-3p, is neuroprotective for stroke in the acute phase and also attenuates long term cognitive decline in middle-aged female rats. Cognitive decline due to vascular diseases, such as stroke, is associated with secondary neurodegeneration in cortex and limbic structures. In this study, we assessed the volume of white matter, ventricles and regional diffusion-weighted MR imaging measures to delineate pathological tissue characteristics from the postmortem brain of stroke rats.
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