Alzheimer’s disease tagged posts

Scientists reverse Alzheimer’s in mice using nanoparticles

Left-hand image:  Light sheet fluorescence microscope images of mouse brain 12h after NOT being treated with nanoparticles. The brains were analyzed to see the amount of Aβ plaques accumulation. Red: Aβ plaques. Green: vessels from the blood brain barrier. Right-hand image: Light sheet fluorescence microscope image of mouse brain 12h after being treated with nanoparticles. The brains were analyzed to see the amount of Aβ plaques accumulation. Red: Aβ plaques. Green: vessels from the blood brain barrier.

A research team co-led by the Institute for Bioengineering of Catalonia (IBEC) and West China Hospital Sichuan University (WCHSU), working with partners in the UK, has demonstrated a nanotechnology strategy that reverses Alzheimer’s disease in mice.

Unlike traditional nanomedici...

Read More

GIST Research reveals a promising new target to thwart Alzheimer’s decades before symptoms start

A person will have Alzheimer’s years before ever knowing it. The disorienting erasure of memories, language, thoughts—in essence, all that makes up one’s unique sense of self—is the final act of this enigmatic disease that spends decades disrupting vital processes and dismantling the brain’s delicate structure.

Once symptoms surface and doctors make a diagnosis, though, it can often be too late. Damage is widespread, impossible to reverse. No cure exists.

Attempts to develop drugs that clear away toxic accumulations of amyloid-beta and tau proteins—hallmarks of the disease that cause neurons to die—have ended in hundreds of failed clinical trials. Today, some scientists are skeptical over whether removing amyloid plaques is even enough...

Read More

Lithium loss ignites Alzheimer’s, but lithium compound can reverse disease in mice

One pair of boxes shows fewer green amyloid clusters on the left and more on the right. Another pair of boxes shows a dim arc of purple and red tau on the left and a brighter arc on the right.
Top row: In a mouse model of Alzheimer’s disease, lithium deficiency (right) dramatically increased amyloid beta deposits in the brain compared with mice that had normal physiological levels of lithium (left). Bottom row: The same was true for the Alzheimer’s neurofibrillary tangle protein tau. Images: Yankner Lab

What is the earliest spark that ignites the memory-robbing march of Alzheimer’s disease? Why do some people with Alzheimer’s-like changes in the brain never go on to develop dementia? These questions have bedeviled neuroscientists for decades.

Now, a team of researchers at Harvard Medical School may have found an answer: lithium deficiency in the brain.

The work, published in Nature, shows for the first time that lithium occurs naturally in the brain, shields it from ...

Read More

Highly accurate blood test diagnoses Alzheimer’s disease, measures extent of dementia

Kanta Horie
WashU Medicine researcher Kanta Horie, PhD, places a sample in a mass spectrometer that measures protein levels in blood plasma and other fluids. Horie co-led the development of a blood test for Alzheimer’s disease that diagnoses and stages the disease by using mass spectrometry to measure the level of a protein called MTBR-tau243.

Could help determine which patients are likely to benefit from new Alzheimer’s drugs. A newly developed blood test for Alzheimer’s disease not only aids in the diagnosis of the neurodegenerative condition but also indicates how far it has progressed, according to a study by researchers at Washington University School of Medicine in St. Louis and Lund University in Sweden.

Several blood tests for Alzheimer’s disease are already clinically available, incl...

Read More