New Lab-Grown Organoids Accurately Mimic Pediatric Brain Tumor Biology
Scientists at St. Jude Children’s Research Hospital have created patient‑derived tumor organoids and organoid xenografts that faithfully recapitulate the genetic, epigenetic and cellular landscape of pediatric brain tumors. The 3D models, validated with DNA methylation, bulk and single‑cell RNA sequencing, and whole‑genome analysis, respond to drugs in the same way as traditional orthotopic xenografts. By cutting development time from months to weeks, the platform offers a faster, cheaper pre‑clinical testing tool. The organoid lines are now available to external researchers, expanding access to high‑fidelity disease models.
BMI Increases in Early Childhood May Reflect Muscle Growth, Not Fat
A study of 2,410 U.S. children from the 2021‑2023 NHANES cohort shows that while BMI rises during the classic adiposity rebound around age six, waist‑to‑height ratio continues to fall, indicating the BMI increase reflects lean‑tissue growth rather than excess fat....
New Findings Explain Why Eccentric Training Prevents Common Sprinting Injuries
A nine‑week Nordic hamstring exercise program increased eccentric knee‑flexor strength by roughly 40% and lengthened biceps femoris fibers by about 25%, without changing individual sarcomere length. Ultrasound and motion‑capture data suggest the muscle adds sarcomeres in series, allowing fibers to...
Researchers Discover How Stress Signals Weaken the Aging Immune System
Aging hematopoietic stem cells (HSCs) lose regenerative capacity as stress signals activate the RIPK3‑MLKL pathway, causing mitochondrial damage without triggering cell death. Researchers from the University of Tokyo and St. Jude Children’s Research Hospital demonstrated that transient MLKL activation in mitochondria...
Waters Debuts Industry-First Extended-Range MALS Detector for UHPLC/UPLC, Powering Rapid Characterization of Large Molecules
Waters Corporation launched the omniDAWN™ Multi‑Angle Light Scattering (MALS) Photometer, the first extended‑range detector compatible with UHPLC and UPLC. The instrument covers particle radii from 50 nm to 500 nm, enabling absolute molar mass and size measurements for large biomolecules such as...
Can Processed Meats Fit Into a Healthy Diet?
A recent review in Animal Frontiers argues that processed meats provide high‑quality, complete protein and dense micronutrients, challenging blanket dietary restrictions. The authors note that protein digestibility and essential amino‑acid scores often exceed 100 %, while also highlighting the variability in...
Are Healthy Foods Really Healthy? Nutrition Researchers Say Context Matters
A recent opinion paper in Clinical Nutrition argues that the health impact of any food cannot be judged in isolation; it depends on what the food replaces on the plate. The authors contend that most nutrition meta‑analyses pool heterogeneous dietary...
Lower-Protein Toddler Formula Does Not Reduce BMI at Age 2, Trial Finds
A multicenter European randomized trial (ToMI) compared lower‑protein (1.5 g/100 kcal) and higher‑protein (6.1 g/100 kcal) toddler formulas in 1,624 children. At 24 months, BMI z‑scores were statistically indistinguishable between groups, indicating no sustained impact on adiposity. However, the high‑protein cohort recorded higher weight and...
Waist-to-Height Ratio Outperforms BMI in Predicting Hypertension Risk
A new study by the University of Eastern Finland and Rutgers University shows that waist‑to‑height ratio (WHtR) cut‑offs predict elevated blood pressure and hypertension more accurately than body mass index (BMI). Analyzing 19,124 U.S. participants from NHANES 2015‑2023, researchers found...
Study Identifies New Genes Linked to Severe Pregnancy Sickness
USC researchers expanded the genetic landscape of hyperemesis gravidarum, identifying nine additional genes alongside the previously known GDF15, GFRAL, IGFBP7, and PGR. The genome‑wide association study analyzed 10,974 HG cases and 461,461 controls across diverse ancestries, the largest cohort to...
Behavioral Design Project Aims to Reduce Benzodiazepine Overuse
A collaborative project between the Universitat Oberta de Catalunya (UOC) and Badalona Serveis Assistencials (BSA) is launching a behavioural‑design pilot to curb long‑term benzodiazepine use in primary‑care. The three‑month intervention, beginning in April at the CAP Martí i Julià centre,...
Study Reveals Interhemispheric Brain Circuit Crucial for Spatial Memory
A joint Spanish research team has mapped a direct neuronal bridge linking the right‑hemisphere CA1 region of the hippocampus to the left‑hemisphere subiculum. Optogenetic silencing of this pathway in mice impairs spatial navigation and object‑location memory while leaving anxiety and...
Study Finds Long COVID Leaves a Distinct Immune Signature in the Blood
A collaborative Australian‑Norwegian study identified a distinct set of inflammatory and neurological proteins in the blood of long COVID patients, measured six to nine months after infection. Machine‑learning analysis highlighted IL‑20, MCP‑1 and NBL1 as key discriminators from recovered and...
SARS-CoV-2 Rarely Reaches First-Trimester Placentas but Still Disrupts Early Pregnancy Immunity
A large analysis of 761 first‑trimester placentas found SARS‑CoV‑2 in only three samples, confirming that in‑utero transmission during early pregnancy is rare. Despite minimal viral presence, infected tissues displayed heightened interferon‑stimulated genes, M2‑like macrophage infiltration, and altered WNT/TGF‑β signaling that...
Common Osteoporosis Drugs Could Slow or Halt Aneurysm Progression
Researchers at Nagoya University discovered that clonal hematopoiesis, found in about 60% of aortic aneurysm patients, accelerates aneurysm expansion. In mouse models, Tet2‑mutant macrophages promoted elastin loss and matrix degradation via the RANK/RANKL pathway. Treatment with FDA‑approved osteoporosis drugs—anti‑RANKL antibodies...
