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Napier C, Grobbelaar H, Oldewage-Theron W. An introduction to the Food-Based Dietary Guidelines for the Elderly in South Africa. SOUTH AFRICAN JOURNAL OF CLINICAL NUTRITION 2021. [DOI: 10.1080/16070658.2021.1950376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Carin Napier
- Department of Food & Nutrition Consumer Sciences, Durban University of Technology, Durban, South Africa
- Centre for Longitudinal Research, The University of Auckland, Auckland, New Zealand
| | - Heleen Grobbelaar
- Department of Food & Nutrition Consumer Sciences, Durban University of Technology, Durban, South Africa
| | - Wilna Oldewage-Theron
- Department of Nutritional Sciences, Texas Tech University, Lubbock, Texas, USA
- Department of Sustainable Food Systems and Development, University of the Free State, Bloemfontein, South Africa
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Canchi S, Raao B, Masliah D, Rosenthal SB, Sasik R, Fisch KM, De Jager PL, Bennett DA, Rissman RA. Integrating Gene and Protein Expression Reveals Perturbed Functional Networks in Alzheimer's Disease. Cell Rep 2020; 28:1103-1116.e4. [PMID: 31340147 PMCID: PMC7503200 DOI: 10.1016/j.celrep.2019.06.073] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 05/20/2019] [Accepted: 06/19/2019] [Indexed: 12/23/2022] Open
Abstract
Asymptomatic and symptomatic Alzheimer’s disease (AD) subjects may present with equivalent neuropathological burdens but have significantly different antemortem cognitive decline rates. Using the transcriptome as a proxy for functional state, we selected 414 expression profiles of symptomatic AD subjects and age-matched non-demented controls from a community-based neuropathological study. By combining brain tissue-specific protein interactomes with gene networks, we identified functionally distinct composite clusters of genes that reveal extensive changes in expression levels in AD. Global expression for clusters broadly corresponding to synaptic transmission, metabolism, cell cycle, survival, and immune response were downregulated, while the upregulated cluster included largely uncharacterized processes. We propose that loss of EGR3 regulation mediates synaptic deficits by targeting the synaptic vesicle cycle. Our results highlight the utility of integrating protein interactions with gene perturbations to generate a comprehensive framework for characterizing alterations in the molecular network as applied to AD. Canchi et al. reveal the transcriptomic dynamics of clinically and neuropathologically confirmed Alzheimer’s disease subjects by integrating brain tissue-specific proteome data with gene network analysis. They identify perturbed biological processes and provide insights into the interactions between molecular mechanisms in symptomatic Alzheimer’s disease.
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Affiliation(s)
- Saranya Canchi
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA; Veterans Affairs San Diego Healthcare System, San Diego, CA, USA
| | - Balaji Raao
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA
| | - Deborah Masliah
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA
| | - Sara Brin Rosenthal
- Center for Computational Biology & Bioinformatics, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Roman Sasik
- Center for Computational Biology & Bioinformatics, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Kathleen M Fisch
- Center for Computational Biology & Bioinformatics, Department of Medicine, University of California, San Diego, La Jolla, CA, USA
| | - Philip L De Jager
- Center for Translational & Computational Neuroimmunology, Department of Neurology, Columbia University Medical Center, New York, NY, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Robert A Rissman
- Department of Neurosciences, University of California, San Diego, La Jolla, CA, USA; Veterans Affairs San Diego Healthcare System, San Diego, CA, USA.
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