Alzheimer’s disease tagged posts

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

Serotonin 2C Receptor Regulates Memory in Mice and Humans: Implications for Alzheimer’s Disease

Artists rendition of a brain and neuron activity in a gold color.

Researchers at Baylor College of Medicine, the University of Cambridge in the U.K. and collaborating institutions have shown that serotonin 2C receptor in the brain regulates memory in people and animal models. The findings, published in the journal Science Advances, not only provide new insights into the factors involved in healthy memory but also in conditions associated with memory loss, like Alzheimer’s disease, and suggest novel avenues for treatment.

“Serotonin, a compound produced by neurons in the midbrain, acts as a neurotransmitter, passing messages between brain cells,” said co-corresponding author Dr. Yong Xu, professor of pediatrics—nutrition and associate director for basic sciences at the USDA/ARS Children’s Nutrition Research Center at Baylor.

“Serotonin-produc...

Read More

Targeting ‘Undruggable’ Proteins Promises New Approach for Treating Neurodegenerative Diseases

Targeting 'undruggable' proteins promises new approach for treating neurodegenerative diseases
Proteins are nature’s polymers, governing biological processes at every level. A new study presents artificial proteins made using modern, precision polymers to intervene and alter natural processes towards a new way of developing therapeutics. Credit: Northwestern University/University of Wisconsin

Proteins are nature’s polymers, governing biological processes at every level. A new study presents artificial proteins made using modern, precision polymers to intervene and alter natural processes towards a new way of developing therapeutics.

Researchers led by Northwestern University and the University of Wisconsin-Madison have introduced a pioneering approach aimed at combating neurodegenerative diseases such as Alzheimer’s disease, Parkinson’s disease and Amyotrophic lateral scleros...

Read More