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John Q. Trojanowski

Researcher at University of Pennsylvania

Publications -  1538
Citations -  245534

John Q. Trojanowski is an academic researcher from University of Pennsylvania. The author has contributed to research in topics: Dementia & Alzheimer's disease. The author has an hindex of 226, co-authored 1467 publications receiving 213948 citations. Previous affiliations of John Q. Trojanowski include Vanderbilt University & University of California, San Francisco.

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The neuropathology of a chromosome 17-linked autosomal dominant parkinsonism and dementia ("pallido-ponto-nigral degeneration").

TL;DR: It is concluded that pallido-ponto-nigral degeneration is a hereditary neurodegenerative disorder characterized by neuronal and glial tau-rich inclusions formed from aggregated filaments and hyperphosphorylated tau proteins and can be subcategorized into the tauopathy group of chromosome 17-linked neurodegenersative disorders.
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Transgenic Mouse Model of Tauopathies with Glial Pathology and Nervous System Degeneration

TL;DR: Tau-positive glial lesions similar to human FTDs occur in these Tg mice, and these pathologies are linked to glial and axonal degeneration.
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Heterogeneity of neuroanatomical patterns in prodromal Alzheimer's disease: links to cognition, progression and biomarkers.

TL;DR: Four atrophy patterns are identified that effectively define a 4-dimensional categorization of neuroanatomical alterations in mild cognitive impairment and Alzheimer's disease that can complement existing dimensional approaches for staging Alzheimer’s disease using a variety of biomarkers, which offer the potential for enabling precision diagnostics and prognostics, as well as targeted patient recruitment of relatively homogeneous subgroups of subjects for clinical trials.
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Postmortem analysis of adrenal-medulla-to-caudate autograft in a patient with Parkinson's disease.

TL;DR: It is demonstrated that autografted chromaffin cells can survive for 4 months after transplantation and that related changes in dopamine receptors can be quantified.
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Neurons and neuroendocrine cells contain chromogranin: detection of the molecule in normal bovine tissues by immunochemical and immunohistochemical methods.

TL;DR: It is demonstrated a wider distribution of CG than previously recognized and that the molecule detected in tissue by immunohistochemistry is indeed CG, and it is concluded that CG is expressed by neurons, cells of the DNS, and by a few other cells that may or may not be related to the DNS.