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Associations between inflammation and striatal dopamine D2-receptor availability in aging.
J Neuroinflammation
January 2025
Department of Medical and Translational Biology, Umeå university, Umeå, 901 87, Sweden.
Background: Normal brain aging is associated with dopamine decline, which has been linked to age-related cognitive decline. Factors underlying individual differences in dopamine integrity at older ages remain, however, unclear. Here we aimed at investigating: (i) whether inflammation is associated with levels and 5-year changes of in vivo dopamine D2-receptor (DRD2) availability, (ii) if DRD2-inflammation associations differ between men and women, and (iii) whether inflammation and cerebral small-vessel disease (white-matter lesions) serve as two independent predictors of DRD2 availability.
View Article and Find Full Text PDFExtension of T Hyperintense Areas in Patients With a Glioma: A Comparison Between High-Quality 7 T MRI and Clinical Scans.
NMR Biomed
March 2025
Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands.
Gliomas are highly heterogeneous and often include a nonenhancing component that is hyperintense on T weighted MRI. This can often not be distinguished from secondary gliosis and surrounding edema. We hypothesized that the extent of these T hyperintense areas can more accurately be determined on high-quality 7 T MRI scans.
View Article and Find Full Text PDFhUC-MSC preserves erectile function by restoring mitochondrial mass of penile smooth muscle cells in a rat model of cavernous nerve injury via SIRT1/PGC-1a/TFAM signaling.
Biol Res
January 2025
Department of Urology and Andrology, Renji Hospital, Shanghai Institute of Andrology, School of Medicine, Shanghai Jiaotong University, Shanghai, 200127, China.
Background: Cavernous nerve injury-induced erectile dysfunction (CNI-ED) is a common complication following radical prostatectomy and severely affects patients' quality of life. The mitochondrial impairment in corpus cavernosum smooth muscle cells (CCSMCs) may be an important pathological mechanism of CNI-ED. Previous studies have shown that transplantation of human adipose derived stem cells (ADSC) can alleviate CNI-ED in a rat model.
View Article and Find Full Text PDFFrom circuits to lifespan: translating mouse and human timelines with neuroimaging based tractography.
J Neurosci
January 2025
Department of Anatomy, Physiology, and Pharmacology, College of Veterinary Medicine, Auburn University, Auburn, AL, USA.
Animal models are commonly used to investigate developmental processes and disease risk, but humans and model systems (e.g., mice) differ substantially in the pace of development and aging.
View Article and Find Full Text PDFSpatial heterogeneity in myelin sheathing impacts signaling reliability and susceptibility to injury.
eNeuro
January 2025
Department of Biology, University of Ottawa, Ottawa, ON K1N 6N5, Canada.
Axons in the mammalian brain show significant diversity in myelination motifs, displaying spatial heterogeneity in sheathing along individual axons and across brain regions. However, its impact on neural signaling and susceptibility to injury remains poorly understood. To address this, we leveraged cable theory and developed model axons replicating the myelin sheath distributions observed experimentally in different regions of the mouse central nervous system.
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