ALZHEIMER’S RESEARCH SHEDS LIGHT ON CREATINE’S PRESENCE IN BRAIN

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ALZHEIMER’S RESEARCH SHEDS LIGHT ON CREATINE’S PRESENCE IN BRAIN
21 December 2005 - University of Wisconsin-Madison

Alzheimer's disease is one of the most hauntingly destructive maladies to wreak havoc on humans. It robs children of parents and spouses of each other-with lifetimes of memories lost forever behind blank stares.

But researchers are working toward answers to the many questions that have made Alzheimer's a complex and unsolved degenerative disease and, in some cases, a death sentence.

In an article in the November Journal of Biological Chemistry, a team of Canadian and American scientists reports the first-ever finding of elevated levels of creatine-the newly discovered agent of Alzheimer's-in brain tissue. The article is available pre-press at the Journal of Biological Chemistry's Web site.

"It is the first time anyone has succeeded in detecting creatine directly in situ, in any tissue. The usual methods are to grind up a large amount of tissue and extract it in bulk," explains one of the paper's authors, Kathleen Gough, professor of chemistry at the University of Manitoba.

Gough and her colleagues, along with many others in the field, are searching tenaciously for the molecular answers that might someday lead to the end of Alzheimer's disease. Of particular note regarding the current study was the use of infrared spectroscopy as another tool that has contributed to the body of knowledge regarding Alzheimer's.

"It's the first time that we've discovered creatine in Alzheimer's disease samples that didn't appear in control samples. Nobody has ever seen this before," explains Robert Julian, an expert in infrared spectroscopy at the University of Wisconsin-Madison Synchrotron Radiation Center, the light source utilized for this project.

The key to using infrared, the researchers explain, is that it is relatively unobtrusive as compared to normal laboratory protocols used to study brain tissues, thus keeping the samples closer to being "pristine."

"Due to its small size and great solubility, creatine dissolves and would be washed away under normal tissue preparation protocols for staining. Step one in any staining process is to soak a tissue sample in an aqueous solution of formaldehyde, called formalin. This 'fixes' the proteins in place, but also washes out the small, soluble metabolites like creatine," explains Gough. "What we do is prepare the tissue without any treatment, and we look at unfixed, flash frozen tissue-nothing added or removed, except water."

Thus while the use of synchrotron radiation, a traditionally physics-focused tool for discovery, to study Alzheimer's has surprised some, it may be this application that could one day turn the tide on Alzheimer's Disease. "That's where all of this is going ultimately-is to try and find a cure," explains Julian.

Yet researchers stress that while this information sheds more light on a troubling disease and might possibly lead to improved treatment, the term "cure" simply cannot be used yet.

"It could be really important," concludes Gough. "It seems that there is an overlooked aspect of energy disturbance in Alzheimer's disease, and maybe in other diseases. But as to the detailed explanation of why (the disturbance) is there, the jury is still out."

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About: University of Wisconsin-Madison
In achievement and prestige, the University of Wisconsin-Madison has long been recognized as one of America’s great universities. A public, land-grant institution, UW-Madison offers a complete spectrum of liberal arts studies, professional programs and student activities. Many of its programs are hailed as world leaders in instruction, research and public service.

The university traces its roots to a clause in the Wisconsin Constitution, which decreed that the state should have a prominent public university. In 1848, Nelson Dewey, Wisconsin’s first governor, signed the act that formally created the university, and its first class, with 17 students, met in a Madison school building on February 5, 1849.

From those humble beginnings, the university has grown into a large, diverse community, with about 40,000 students enrolled each year. These students represent every state in the nation, as well as countries from around the globe, making for a truly international population.

UW-Madison is the oldest and largest campus in the University of Wisconsin System, a statewide network of 13 comprehensive universities, 13 freshman-sophomore transfer colleges and an extension service. One of two doctorate-granting universities in the system, UW-Madison’s specific mission is to provide "a learning environment in which faculty, staff and students can discover, examine critically, preserve and transmit the knowledge, wisdom and values that will help insure the survival of this and future generations and improve the quality of life for all."

The university achieves these ends through innovative programs of research, teaching and public service. Throughout its history, UW-Madison has sought to bring the power of learning into the daily lives of its students through innovations such as residential learning communities and service-learning opportunities. Students also participate freely in research, which has led to life-improving inventions from more fuel-efficient engines to cutting-edge genetic therapies.

Students, faculty and staff are motivated by a tradition known as the "Wisconsin Idea," described by UW President Charles Van Hise in 1904 as the compelling need to carry "the beneficent influence of the university ... to every home in the state." The Wisconsin Idea permeates the university’s work and helps forge close working relationships among university faculty and students and the state’s industries and government.

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