Alzheimer’s Disease Without Amyloid Plaques

in medicine, biology

Amyloid plaques have long been thought to be the cause of neuron loss in Alzheimer’s disease.  Now researchers report that excess of mutated amyloid precursor protein (APP) inside the neurons is sufficient to induce neuron death.  The report challenges the notion that amyloid deposits outside of the cells are necessary for neuron death in Alzheimer’s disease.

ePetri Dish, A Smart Petri Dish From Caltech

in biology, education

The imaging sensor chips in electronic gadgets helped engineers at the California Institute of Technology  transform the way cell cultures are imaged by serving as the platform for a "smart" petri dish, named ePetri.

New Light-Sensitive Polymer For Use In Non-Invasive Surgical Procedures Developed

in technology, medicine

Scientists at the University of California, San Diego have developed what they believe to be the first polymeric material that is sensitive to biologically benign levels of near infrared (NRI) irradiation, enabling the material to disassemble in a highly controlled fashion.

Dendritic Cell Scientist Wins Nobel Prize

in Medicince, biology

Dendritic cell research got a boost this week when Ralph Steinman won the Nobel Prize for Physiology or Medicine. Sadly, Steinman did not live long enough to receive the Prize, he passed away just three days before the Nobel Prize was announced.

Interaction Of Hydrophobic Molecules With Water – New Insights

in technology

Researchers now report how water repelling substances interact with water at the molecular level.  This finding may have far-reaching implications in the science of protein chemistry, drug design, biofouling and nanomaterials.

Researchers Report DNA Modifications In Non-dividing Brain Cells

in Medicen, biology

Hopkins scientists report that changes to DNA in brain neurons do occur though these neurons do not divide. They used electric shock to stimulate the brains of live mice. A few hours after administering the brain stimulation, the scientists analyzed two million of the same type of neurons from the brains of stimulated mice.

Unveiling The Biological Clock - A New Clock Gene From Salk

in biology, omics

Researchers at the Salk Institute for Biological Studies have identified a new component of the biological clock, a gene responsible for starting the biological clock from its restful state every morning. According to Salk Institute, the new discovery fills in a missing link in the molecular mechanisms that control our daily wake-sleep cycle.

Singing After Stroke? Don’t Ignore Rhythm

in medicine, biology

When a stroke damages speech areas in the brain’s left hemisphere, sufferers often have severe difficulties speaking – a condition known as non-fluent aphasia. A new study published in the journal Brain may lead the way to new rehabilitative therapies for the speech disorders.