Background: Neuromyelitis optica (NMO) and multiple sclerosis (MS) are often presenting with overlapping symptoms. The aim of this study was to determine whether and how NMO and MS differ regarding cerebral iron deposits in deep gray matter (DGM) and the correlation between iron deposition and clinical severity as well as to regional atrophy of the DGM.
Methods: We analyzed 20 patients with NMO, 40 patients with a relapsing-remitting (RR) form of MS, and 20 healthy controls with 1.5T MRI. Quantitative susceptibility mapping (QSM) was performed to estimate iron concentration in the DGM.
Results: Patients with NMO have higher magnetic susceptibility values in the substantia nigra compared to healthy controls. RRMS patients have lower magnetic susceptibility values in the thalamus compared to healthy controls and NMO patients. Atrophy of the thalamus, pulvinar, and putamen is significant both in RRMS compared to NMO patients and healthy controls. A correlation was found between the disability score (EDSS) and magnetic susceptibility in the putamen in RRMS.
Conclusions: This study confirms that a disturbed cerebral iron homeostasis in patients with NMO occurs in different structures than in patients with RRMS. Increased magnetic susceptibility in substantia nigra in NMO and decreased magnetic susceptibility within the thalamus in RRMS were the only significant differences in the study sample. We could confirm that iron concentration in the thalami is decreased in RRMS compared to that in the HC group. Positive association was found between putaminal iron and EDSS in RRMS.
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http://dx.doi.org/10.1155/2020/6492786 | DOI Listing |
Acad Radiol
January 2025
Department of Medical Imaging, National Taiwan University Hospital, Taipei, Taiwan (T.W.L., C.H.W.); Center of Minimal-Invasive Interventional Radiology, National Taiwan University Hospital, Taipei, Taiwan (C.H.W.); Hepatitis Research Center, National Taiwan University Hospital, Taipei, Taiwan (C.H.W.). Electronic address:
Rationale And Objectives: Individuals with autosomal dominant polycystic kidney disease (ADPKD) can present with diverse renal and extra-renal manifestations. Large vessel anomalies, such as cerebral aneurysms, are potentially fatal extra-renal manifestations. However, limited research has been conducted on cerebral small vessel disease (CSVD).
View Article and Find Full Text PDFGastroenterol Clin North Am
March 2025
Karsh Division of Gastroenterology and Hepatology, Cedars-Sinai Medical Center, 8700 Beverly Boulevard, ST, Suite 7705, Los Angeles, CA 90048, USA. Electronic address:
Pancreatic cancer, often diagnosed at advanced stages, has poor survival rates. Effective screening aims to detect the disease early, improving outcomes. Current guidelines recommend screening high-risk groups, including those with a family history or genetic predispositions, using methods like endoscopic ultrasound and MRI.
View Article and Find Full Text PDFGastroenterol Clin North Am
March 2025
Division of Gastroenterology and Hepatology, Oregon Health & Science University, Portland, OR, USA. Electronic address:
Recurrent acute pancreatitis (RAP) is a complex syndrome that presents variably, with many cases remaining idiopathic after thorough diagnostics. For evaluating structural etiologies, endoscopic ultrasound and MR cholangiopancreatography are preferred over endoscopic retrograde cholangiopancreatography (ERCP) given their more favorable risk profile and sensitivity. The diagnostic work-up remains paramount since treatment should focus on addressing underlying causes such as early cholecystectomy for gallstone pancreatitis.
View Article and Find Full Text PDFAlzheimers Dement
January 2025
Department of Radiology, China-Japan Friendship Hospital, Beijing, China.
Introduction: The link between overload brain iron and transcriptional/cellular signatures in Alzheimer's disease (AD) remains inconclusive.
Methods: Iron deposition in 41 cortical and subcortical regions of 30 AD patients and 26 healthy controls (HCs) was measured using quantitative susceptibility mapping (QSM). The expression of 15,633 genes was estimated in the same regions using transcriptomic data from the Allen Human Brain Atlas (AHBA).
Transition metal phosphorus sulfides (MPS), a family of two-dimensional magnetic materials with a van der Waals structure, exhibit promising applications in nonlinear optical devices. The emergence of carrier coherence in MPS is a fascinating topic in coherently controlling the nonlinear effect (or other novel phenomena). Herein, we systematically investigated the third-order nonlinear optical responses of MPS (M = Ni, Fe, Mn) flake suspensions based on spatial self-phase modulation (SSPM) effect.
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