Publications by authors named "J Manuel Ramos Nieves"
Objective: We examined whether riluzole treatment modifies the associations between the dietary glycemic index (GI) and load (GL) and disease progression in amyotrophic lateral sclerosis (ALS).
Methods: Sporadic ALS patients in the Multicenter Cohort Study of Oxidative Stress who completed a baseline food frequency questionnaire were included (n = 304). Interactions between baseline riluzole treatment and GI/GL on functional decline and tracheostomy-free survival were examined using linear regression and Cox proportional hazard models adjusted for covariates.
Opportunistic screening is essential to improve the identification of individuals with osteoporosis. Our group has utilized image texture features to assess bone quality using clinical MRIs. We have previously demonstrated that greater heterogeneity of MRI texture related to history of fragility fractures, lower bone density, and worse microarchitecture.
View Article and Find Full Text PDFNocturnal camouflage through background matching against moonlight.
Proc Natl Acad Sci U S A
January 2025
Camouflage is often considered a daytime phenomenon based on light and shade. Nocturnal camouflage can also occur, but its mechanistic basis remains unclear. Here, we analyze the conditions for background matching (BM) of avian predators against the night sky.
View Article and Find Full Text PDFArticle Synopsis
- This study explores the relationship between psoas muscle size (measured by cross-sectional area) and bone health in patients undergoing spine fusion surgery, highlighting the connection between muscle and bone health in surgical outcomes.
- The research involved measuring psoas muscle area using CT scans and assessing bone density and microarchitecture with advanced imaging techniques in a cohort of 88 patients, revealing that larger psoas size correlates with better bone metrics.
- Findings showed that while psoas size is linked to higher bone mineral density and better microarchitecture at certain sites, this relationship varied by sex and did not hold for lumbar spine bone density, indicating complex interactions between muscle and bone health.