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Resting-state fMRI study on male patients with Parkinson's disease and with sexual dysfunction

3 months 3 weeks ago
Sexual dysfunction (SD) is a common non-motor symptom in Parkinson's disease (PD) that substantially reduces patients' quality of life. However, the underlying neural mechanisms of SD in PD remain poorly understood. This study aimed to investigate the role of functional abnormalities in brain regions with dopaminergic innervation in male PD patients with SD, using resting-state functional magnetic resonance imaging (rs-fMRI). A total of 34 male PD patients were enrolled. The bilateral caudate,...
Kunpeng Qin

White matter fractional anisotropy decreases precede hyperintensities in Alzheimer's disease

3 months 3 weeks ago
The associations of β-amyloid (Aβ) and tau deposition with white matter (WM) degeneration in Alzheimer's disease (AD) remain inadequately elucidated. We investigate baseline and longitudinal changes of microstructural fractional anisotropy (FA) and macrostructural white matter hyperintensities (WMHs) and their relationships with Aβ and tau positron emission tomography (PET) and vascular risk factors in different Aβ/tau stages defined by PET imaging. Lower levels and faster decline rates of FA...
Pan Sun

Identifying molecular pathways of olfactory dysfunction in Parkinson's disease through a systems biology framework

3 months 3 weeks ago
The sense of smell is essential for human perception. Olfactory function declines with increasing age, affecting a substantial portion of the elderly population, and this decline is more pronounced in men. This reduction can be attributed to anatomical and degenerative changes in the brain and olfactory receptors. There is robust clinical evidence indicating an association between olfactory perception decline/deficit (OPD) and major neurodegenerative diseases, with severe deficits observed in...
Nicolas Daniel Glasbauer

Establishment of salivary tissue-organoid biorepository: characterizing salivary gland stem/progenitor cells and novel differentiation marker PSMA/FOLH1

3 months 3 weeks ago
The salivary gland (SG) is vital for oral function and overall health through secretion of saliva. However salivary dysfunction due to aging, medications, autoimmune disorders, and cancer treatments poses significant challenges. We established the first diverse and clinically annotated salivary regenerative biobank at Mayo Clinic to study salivary gland stem/progenitor cells (SGSPCs). Optimization of cell isolation and progenitor assays revealed SGSPCs enriched within the CD24/EpCAM/CD49f+ and...
Syed Mohammed Musheer Aalam

Age-Related Oxidative Stress and Mitochondrial Dysfunction in Lymph Node Stromal Cells Limit the Peripheral T Cell Homeostatic Maintenance and Function

3 months 3 weeks ago
Lymph nodes (LN) are the key organs in charge of long-term maintenance of naïve lymphocytes and their initial, primary activation upon infection. Accumulating evidence indicates that LN stromal cells undergo degenerative changes with aging that critically impair LN function, including the generation of protective primary immune responses. The nature of these defects remains incompletely understood. We here demonstrate that age-related LN stromal changes manifest themselves in mitochondrial...
Sandip Ashok Sonar