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New Standard for Detecting Alzheimer's By Rick Nauert PhD 2 min readA University of California, Los Angeles (UCLA) led research team has validated a standard protocol that can be used to detect one of the earliest signs of Alzheimer's disease.The approach detects atrophy in the part of the brain known as the hippocampus.The findingchristian louboutin outletmarks a six year effort by an international consortium to develop a unified and reliable approach to assessing signs of Alzheimer's through structural imaging tests.The study is published in the journal Alzheimer and Dementia.Using brain tissue of deceased Alzheimer disease patients, a group headed by Dr. Liana Apostolova, director of the neuroimaging laboratory at UCLA, confirmed that the newly agreed upon method for measuring hippocampal atrophy in structural MRI tests correlates with the pathologic changes that are known to be hallmarks of the disease.These changes include the progressive development of amyloid plaques and neurofibrillary tangles in the brain.hippocampal protocol willlouboutin outlet uknow become the gold standard in the field, adopted by many if not all research groups across the globe in their study of Alzheimer disease, said Apostolova.will serve as a powerful tool in clinical trials for measuring the efficacy of new drugs in slowing or halting disease progression.In living patients, physicians diagnose Alzheimer by evaluating other health factors, known as biomarkers, in combination with memory loss and other cognitive symptoms.The hippocampus is a small region of the brain that is associated with memory formation, and memory loss is the earliest clinical feature of Alzheimer disease.Its shrinkage or atrophy, as determined by a structural MRI exam, is a well establishedmoncler outlet ukbiomarker for the disease and is commonly used in both clinical and research settings to diagnose the disease and monitor its progression.Until now, the effectiveness of structural MRI has been limited because of the widely different approaches being used to identify the hippocampus and measure its volume.For example, a typical hippocampus is about 3,000 to 4,000 cubic millimeters in volume. But, Apostolova notes, two scientists analyzing the same structure can come up with a difference of as much as 2,000 cubic millimeters.In addition, no previous study had verified whether estimates for the volume of the hippocampus using MRI corresponded to actual tissue loss.To address these deficiencies,mulberry outletthe European Alzheimer Disease Consortium Alzheimer Disease Neuroimaging Initiative was established to develop a protocol in an effort to establish a definitive method for measuring hippocampal shrinkage through structural MRI in a way that best corresponds to the Alzheimer disease process.Once the protocol was established, Apostolova and four other experts were invited to develop the gold standard for measuring the hippocampus to be used by anyone employing the protocol.The UCLA led team then validated the technique and ensured the changes in the hippocampus corresponded to the hallmark pathologic changes associated with Alzheimer disease.technique is meant to be used on scansmulberry outlet storeof living human subjects, so it important that we are absolutely certain that this methodology measures what it is supposed to and captures disease presence accurately, Apostolova said.To do that, her group used a powerful 7 Tesla MRI scanner to take images of the brain specimens of 16 deceased individuals nine who had Alzheimer disease and seven who were cognitively normal each for 60 hours.This provided unprecedented visualization of the hippocampal tissue, Apostolova said.After applying the protocol to measure the hippocampal structures, the researchers analyzed the tissues for two changes that signify the disease: a buildup of amyloid tau protein and loss of neurons.may11.29

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