Obesity is a possible risk factor of multiple sclerosis (MS), but the association between obesity and MS disease activity has not been explored. In a cohort of 86 MS patients, 80% of overweight or obese patients (BMI≥25kg/m(2)) had MRI activity compared to 48% of the normal-weight patients (BMI<25kg/m(2)) (p=0.001) during interferon-beta treatment. NEDA-status (no evidence of disease activity) was defined as a composite that consisted of absence of any relapses, sustained disability-progression and MRI-activity. Among normal-weight patients 26% obtained NEDA-status compared to only 13% of patients with BMI >25 (p=0.05). This may indicate that BMI affects interferon-beta treatment response.
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http://dx.doi.org/10.1016/j.jneuroim.2015.09.008 | DOI Listing |
Alzheimers Dement
December 2024
Flanders Institute for Biotechnology (VIB), Leuven, Belgium.
Background: While social and medical debate about the efficacy and safety of anti-Aβ immunotherapy is ongoing, one thing that emerged is that we have little understanding of the working mechanisms of these antibodies and this lack of knowledge complicates the interpretation of the clinical results. Here, we aimed to establish if microglia are required for the efficacy of Lecanemab, one of the most promising FDA-approved disease-modifying therapy for AD (Van Dyck et al. N Engl J Med 2023).
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Institute for Regenerative Medicine, Department of Cell Biology and Genetics, School of Medicine, Texas A&M University Health Science Center, College Station, Texas, USA., College Station, TX, USA.
Background: Current treatments for Alzheimer's disease (AD) lack disease-modifying interventions. Hence, novel therapies capable of restraining AD progression and maintaining better brain function for extended periods after the initial diagnosis have great significance. Extracellular vesicles (EVs) from human induced pluripotent stem cell (hiPSC)-derived neural stem cells (NSCs) are attractive in this context due to their robust antiinflammatory properties.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Xuanwu Hospital of Capital Medical University, Beijing, Beijing, China.
Background: Alzheimer's disease (AD), also known as senile dementia, is the most common degenerative disease of the central nervous system. Neuroinflammation is currently believed to be a crucial factor in the progression of AD, while its exact mechanism remains unclear.
Method: APP/PS1 AD mice were treated with a natural active ingredient tetrahydroxy stilbene glucoside (TSG) at 40 mg/kg/day and 80 mg/kg/day respectively for 5 consecutive months, and then the Morris water maze test (MWM) and the novel object recognition test were performed to assess the effect of TSG on the cognitive and memory ability of AD mice.
Alzheimers Dement
December 2024
Laboratory of Behavioral Neuroscience, National Institute on Aging, Intramural Research Program, Baltimore, MD, USA.
Background: While immune function is known to play a mechanistic role in Alzheimer's disease (AD), whether immune proteins in peripheral circulation influence the rate of amyloid-b (Aβ) progression remains unknown.
Method: Using the Baltimore Longitudinal Study of Aging (BLSA; n = 196; mean follow-up: 5 years/4 scans), we identified immune-related proteins in plasma (candidate proteins) related to rates of change in cortical Aβ levels, as measured by C-PiB PET. Along with identifying genetic variants that contributed to candidate protein associations, characterizing their relationships with tau-PET and changes in ADRD biomarkers (Aβ, NfL, GFAP, pTau-181), and assessing their expression patterns in human microglia, we leveraged data from the Atherosclerosis Risk in Communities (ARIC) study to determine if changes in candidate protein levels precede Ab = β onset (n = 272), and whether they predict 20-year dementia risk during mid-life (n = 11,596) and 8-year dementia risk during late-life (n = 4,288).
Nat Commun
December 2024
College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National University, Seoul, Republic of Korea.
Delivering protein drugs to the central nervous system (CNS) is challenging due to the blood-brain and blood-spinal cord barrier. Here we show that neutrophils, which naturally migrate through these barriers to inflamed CNS sites and release neutrophil extracellular traps (NETs), can be leveraged for therapeutic delivery. Tannic acid nanoparticles tethered with anti-Ly6G antibody and interferon-β (aLy6G-IFNβ@TLP) are constructed for targeted neutrophil delivery.
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