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Ecological erosion and expanding extinction risk of sharks and rays

4 months 2 weeks ago
Science, Volume 386, Issue 6726, December 2024.
Nicholas K. Dulvy, Nathan Pacoureau, Jay H. Matsushiba, Helen F. Yan, Wade J. VanderWright, Cassandra L. Rigby, Brittany Finucci, C. Samantha Sherman, Rima W. Jabado, John K. Carlson, Riley A. Pollom, Patricia Charvet, Caroline M. Pollock, Craig Hilton…

Programming tissue-sensing T cells that deliver therapies to the brain

4 months 2 weeks ago
Science, Volume 386, Issue 6726, December 2024.
Milos S. Simic, Payal B. Watchmaker, Sasha Gupta, Yuan Wang, Sharon A. Sagan, Jason Duecker, Chanelle Shepherd, David Diebold, Psalm Pineo-Cavanaugh, Jeffrey Haegelin, Robert Zhu, Ben Ng, Wei Yu, Yurie Tonai, Lia Cardarelli, Nishith R. Reddy, Sachdev S…

Deciphering proteins in Alzheimer's disease: A new Mendelian randomization method integrated with AlphaFold3 for 3D structure prediction

4 months 2 weeks ago
Hidden confounding biases hinder identifying causal protein biomarkers for Alzheimer's disease in non-randomized studies. While Mendelian randomization (MR) can mitigate these biases using protein quantitative trait loci (pQTLs) as instrumental variables, some pQTLs violate core assumptions, leading to biased conclusions. To address this, we propose MR-SPI, a novel MR method that selects valid pQTL instruments using Leo Tolstoy's Anna Karenina principle and performs robust post-selection...
Minhao Yao

Monoclonal therapy with lecanemab in the treatment of mild Alzheimer's disease: A systematic review and meta-analysis

4 months 2 weeks ago
Alzheimer's disease, a progressive neurodegenerative pathology, is characterized by the accumulation of Amyloid-β plaques in the brain. Lecanemab (BAN2401), a humanized IgG1 monoclonal antibody, binds with high affinity to Amyloid-β protofibrils. It is the first monoclonal antibody for Alzheimer's disease to receive full FDA approval. This systematic review, conducted meticulously, examines the current use and safety of Lecanemab in treating Alzheimer's disease. We screened literature from...
Nelson Arroyo-Pacheco

Multifaceted roles of DLG3/SAP102 in neurophysiology, neurological disorders and tumorigenesis

4 months 2 weeks ago
DLG3, also known as Synapse-associated protein 102 (SAP102), is essential for the organization and plasticity of excitatory synapses within the central nervous system (CNS). It plays a critical role in clustering and moving key components necessary for learning and memory processes. Mutations in the DLG3 gene, which result in truncated SAP102 proteins, have been associated with a range of neurological disorders, including X-linked intellectual disability (XLID), autism spectrum disorders (ASD),...
Khalid Idris Gidado

Homeostatic microglia initially seed and activated microglia later reshape amyloid plaques in Alzheimer's Disease

4 months 2 weeks ago
The role of microglia in the amyloid cascade of Alzheimer's disease (AD) is debated due to conflicting findings. Using a genetic and a pharmacological approach we demonstrate that depletion of microglia before amyloid-β (Aβ) plaque deposition, leads to a reduction in plaque numbers and neuritic dystrophy, confirming their role in plaque initiation. Transplanting human microglia restores Aβ plaque formation. While microglia depletion reduces insoluble Aβ levels, soluble Aβ concentrations stay...
Nóra Baligács

Relationships of functional connectivity of motor cortex, primary somatosensory cortex, and cerebellum to balance performance in middle-aged and older adults

4 months 2 weeks ago
Connectivity of somatosensory cortex (S1) and cerebellum with the motor cortex (M1) is critical for balance control. While both S1-M1 and cerebellar-M1 connections are affected with aging, the implications of altered connectivity for balance control are not known. We investigated the relationship between S1-M1 and cerebellar-M1 connectivity and standing balance in middle-aged and older adults. Our secondary objective was to investigate how cognition affected the relationship between connectivity...
Ashwini Sansare