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tag amyloid plaques microbiology cell molecular biology disease medicine

bacteria and DNA molecules on a purple background.
Engineering the Microbiome: CRISPR Leads the Way
Mariella Bodemeier Loayza Careaga, PhD | Mar 15, 2024 | 10+ min read
Scientists have genetically modified isolated microbes for decades. Now, using CRISPR, they intend to target entire microbiomes.
Do Microbes Trigger Alzheimer’s Disease?
Jill U. Adams | Sep 1, 2017 | 10 min read
The once fringe idea is gaining traction among the scientific community.
Tiled blue-gray MRI readouts of a human brain.
Cancer Tied to Reduced Risk of Alzheimer’s Disease
Dan Robitzski | Apr 14, 2022 | 7 min read
Observational evidence for the connection is solidifying, and some clues are emerging about the mechanisms that may explain it.
Attacking b-Amyloid at its Source
Brendan Maher | Jan 20, 2002 | 5 min read
The all-out assault to impede production of b-amyloid (Ab), the plaque-forming peptide believed by many to cause neurodegenerative Alzheimer's disease (AD), entails a war on two fronts. For those aiming to prevent plaques at their cellular source, the two clear targets are b-secretase and g-secretase, which sequentially cleave amyloid precursor protein (APP) to generate Ab. Some victories are emerging: Small molecules designed to inhibit g-secretase activity are being clinically tested, and the
Amending the Amyloid Hypothesis
Maria Anderson | Oct 24, 2004 | 6 min read
Aggregates of misfolded proteins are implicated in various neurodegenerative diseases.
Artist&rsquo;s rendition of multiple <em>Neisseria gonorrhoeae</em>, the bacteria that causes gonorrhea, depicted as two spheres stuck together, each covered in tendrils.
Gonorrhea-Blocking Mutation Also Protects Against Alzheimer’s: Study
Holly Barker, PhD | Aug 5, 2022 | 4 min read
Research traces the evolution of a gene variant that reduces the risk of Alzheimer’s disease, finding that it originally evolved in response to infectious bacteria.
Artist&rsquo;s rendition of a neuron silhouetted against a glowing red background.
SNO-y Protein Levels Help Explain Why More Women Develop Alzheimer’s
Dan Robitzski | Jan 6, 2023 | 4 min read
Female postmortem brains contain more S-nitrosylated C3 proteins, likely linked to menopause, which instruct immune cells to kill neuronal synapses.
Scanning electron micrograph (SEM) of the unicellular yeast Saccharomyces cerevisiae, known as Baker's or Brewer's yeast.
Yeast Models Provide New Insights into Neurodegenerative Diseases
Mahlon Collins | Oct 1, 2021 | 10+ min read
The single-celled fungus allows researchers to study Alzheimer’s, Parkinson’s, ALS and other brain diseases with unparalleled speed and scale.
Elusive Gamma-Secretase Identified
Nadia Halim | Jun 25, 2000 | 5 min read
Model of an inhibitor targeted to g-secretase interacting with presenilin. The background shows an Alzheimer's brain that carried a presenilin mutation, with immunohistochemistry revealing abundant amyloid plaques (red-orange patches). For years researchers have been perplexed by the identity of g-secretase, an enzyme that cuts amyloid precursor protein (APP) into amyloid ß (Aß) fragments that form telltale plaques in the brains of Alzheimer's patients. Now researchers from Merck Rese
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Vector image of black body with head surrounded by white clouds
Multiple Possible Causes of Long COVID Come into Focus
Natalia Mesa, PhD | Sep 28, 2022 | 10+ min read
Recent studies have lent support for a variety of hypotheses explaining the debilitating symptoms affecting millions of people after SARS-CoV-2 infection.  

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