astronomy

Lary Walker

Lary Walker is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lary Walker rather than just read about it. In short: Lary Walker is an American neuroscientist and researcher in the field of neurodegenerative diseases. He is Professor Emeritus at Emory University in Atlanta, Georgia where he was Associate Director of the Goizueta Alzheimer's Disease Research Center.

Key takeaways

Lary Walker belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lary Walker to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lary Walker from memory before moving on to harder problems.

Reference excerpt

Lary Walker is an American neuroscientist and researcher in the field of neurodegenerative diseases. He is Professor Emeritus at Emory University in Atlanta, Georgia where he was Associate Director of the Goizueta Alzheimer's Disease Research Center. He is known for his research on the role of abnormal proteins in the causation of Alzheimer's disease.

Education and career Walker received his Bachelor of Science degree from Louisiana State University and his Master of Science and PhD degrees from Tulane University. Following a German Academic Exchange (DAAD) Fellowship at the University of Kassel and a National Institutes of Health (NIH) postdoctoral fellowship at Emory University, he moved to the Neuropathology Laboratory of Donald L. Price at Johns Hopkins University, where he began work on the biological basis of Alzheimer's disease. In 1995 he became head of the Alzheimer's disease drug discovery program at Parke-Davis/Warner-Lambert in Ann Arbor, Michigan. In 2003 he returned to Emory University where he was the Marie and E.R. Snelling Professor of Neurology until transitioning to emeritus status in 2020.

Research

Biology of Aβ plaques Walker's early research established that a variety of neurons are involved in the formation of Aβ plaques, one of the pathological hallmarks of Alzheimer's disease. With Dale Schenk at Athena Neurosciences (later part of Élan Pharmaceuticals), he discovered that antibodies to the Aβ protein can enter the brain from the cerebrospinal fluid and selectively bind to Aβ plaques and cerebral Aβ-amyloid angiopathy (CAA). Based on his work with animal models of Alzheimer's disease, Walker has proposed that humans are uniquely vulnerable to Alzheimer's disease.

Prion-like properties of disease-causing proteins Since the late 1990s, Walker's research has been directed toward the mechanisms underlying the misfolding and aggregation of the Aβ protein in the brain. In collaboration with Mathias Jucker at the University of Tübingen, he discovered that the accumulation of Aβ can be initiated in transgenic mouse models by a prion-like mechanism in which 'seeds' of abnormal Aβ precipitate the formation of plaques and CAA. In 2000, Walker and Harry LeVine introduced the term 'proteopathy' (also known as 'proteinopathy') to describe diseases characterized by the misfolding and aggregation of proteins. This terminology has been applied to a number of neurodegenerative disorders and amyloidoses, including tauopathies such as Pick's disease, synucleinopathies such as Parkinson's disease and Lewy Body Dementia, systemic amyloidoses, and others.

Awards Walker received the Metlife Foundation Award for Medical Research in Alzheimer's Disease in 2014, the Alexander von Humboldt Research Award in 2016, and the Peter Bassoe Lectureship of the American Neuropsychiatric Association in 2017.

Bibliography

Selected reviews Walker, LC; Jucker, M (2013). "Seeds of dementia". Scientific American. 308: 52–7. doi:10.1038/scientificamerican0513-52. PMC 10699165. PMID 23627220.. Walker, LC; Diamond, MI; Duff, KE; Hyman, BT (2013). "Mechanisms of protein seeding in neurodegenerative diseases". JAMA Neurology. 70: 304–10. doi:10.1001/jamaneurol.2013.1453. PMC 3665718. PMID 23599928.. Jucker, M; Walker, LC (2013). "Self-propagation of pathogenic protein aggregates in neurodegenerative diseases". Nature. 501: 45–51. Bibcode:2013Natur.501...45J. doi:10.1038/nature12481. PMC 3963807. PMID 24005412.. Walker, LC; Jucker, M (2015). "Neurodegenerative diseases: expanding the prion concept". Annual Review of Neuroscience. 38: 87–103. doi:10.1146/annurev-neuro-071714-033828. PMC 4803040. PMID 25840008.. Walker, LC (2016). "Proteopathic Strains and the Heterogeneity of Neurodegenerative Diseases". Annual Review of Genetics. 50: 329–346. doi:10.1146/annurev-genet-120215-034943. PMC 6690197. PMID 27893962.. Jucker, M; Walker, LC (2018). "Propagation and spread of pathogenic protein assemblies in neurodegenerative diseases". Nature Neuroscience. 21: 1341–1349. doi:10.1038/s41593-018-0238-6. PMC 6375686. PMID 30258241.. Walker, LC (2020). "Aβ plaques". Free Neuropathology. 1 (31). doi:10.17879/freeneuropathology-2020-3025. PMC 7745791. PMID 33345256.. Jucker, M; Walker, LC (2023). "Alzheimer's disease: From immunotherapy to immunoprevention". Cell. 186: 4260–4270. doi:10.1016/j.cell.2023.08.021. PMC 10578497. PMID 37729908.. Walker, LC; Jucker, M (2024). "The prion principle and Alzheimer's disease". Science. 385: 1278–1279. doi:10.1126/science.adq5252. PMC 11492928. PMID 39298592..

Selected research reports Callahan, MJ; Lipinski, WJ; Bian, F; Durham, RA; Pack, A; Walker, LC (2001). "Augmented senile plaque load in aged female beta-amyloid precursor protein-transgenic mice". Am J Pathol. 158: 1173–7. doi:10.1016/s0002-9440(10)64064-3. PMC 1850367. PMID 11238065.. Meyer-Luehmann, M; Coomaraswamy, J; Bolmont, T; et al. (September 2006). "Exogenous induction of cerebral beta-amyloidogenesis is governed by agent and host". Science. 313: 1781–4. doi:10.1126/science.1131864. PMID 16990547.. Rosen, RF; Ciliax, BJ; Wingo, TS; Gearing, M; Dooyema, J; Lah, JJ; Ghiso, JA; LeVine, H; Walker, LC (2010). "Deficient high-affinity binding of Pittsburgh compound B in a case of Alzheimer's disease". Acta Neuropathol. 119: 221–233. doi:10.1007/s00401-009-0583-3. PMC 3045810. PMID 19690877.. Rosen, RF; Fritz, JJ; Dooyema, J; Cintron, AF; Hamaguchi, T; Lah, JJ; LeVine, H; Jucker, M; Walker, LC (2012). "Exogenous seeding of cerebral β-amyloid deposition in βAPP-transgenic rats". J Neurochem. 120: 660–666. doi:10.1111/j.1471-4159.2011.07551.x. PMC 3293176. PMID 22017494.. Rasmussen, J; Mahler, J; Beschorner, N; Kaeser, SA; Häsler, LM; Baumann, F; Nyström, S; Portelius, E; Blennow, K; Lashley, T; Fox, NC; Sepulveda-Falla, D; Glatzel, M; Oblak, AL; Ghetti, B; Nilsson, KPR; Hammarström, P; Staufenbiel, M; Walker, LC; Jucker, M (2017). "Amyloid polymorphisms constitute distinct clouds of conformational variants in different etiological subtypes of Alzheimer's disease". Proc Natl Acad Sci U S A. 114: 13018–13023. doi:10.1073/pnas.1713215114. PMC 5724274. PMID 29158413..

Complete list of published work https://scholar.google.com/citations?user=Ap8lgXEAAAAJ&hl=en&oi=sra nih.gov

… excerpt ends here. Continue reading the full article.

Worked examples

Example 1 — a first encounter with Lary Walker

Start with the simplest possible case. Write down what Lary Walker claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lary Walker before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lary Walker ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lary Walker

In research: Lary Walker appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lary Walker in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lary Walker is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1950 births, Alzheimer's disease researchers, American medical researchers, so understanding it makes those chapters shorter.
In everyday life: Look for Lary Walker outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Lary Walker in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lary Walker means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lary Walker out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lary Walker in simple terms?

Why does Lary Walker matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lary Walker?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lary Walker.