In a special issue of the Journal of Alzheimer's Disease published this month, ten contributions from worldwide experts in the field examine possible linkages between folate and homocysteine and Alzheimer's disease.
In the lead article Guest Editor Thomas Shea, Professor and Director of the Center for Cellular Neurobiology and Neurodegeneration Research, University of Massachusetts Lowell, suggests “Alzheimer’s disease has a multifactoral etiology, encompassing genetic and nutritional risk factors, and no single risk factor can account for all cases.…A genetic predisposition may remain latent pending an age-related critical decline in nutrition. This has confounded the linkage of nutrition to Alzheimer’s disease, since contributing nutritional deficiencies may remain undetected, and, even if considered, may not receive sufficient attention if they are benign in isolation.”
Andrew McCaddon from the Wales College of Medicine contributes some historical perspective on homocysteine and folate levels and the development of dementia, including some discussion of the potential for reversing such declines.
Aron M. Troen and colleagues from Tufts University write of their studies of mice fed diets to create excess homocysteine levels and then tested for cognitive functions. Sudha Seshadri discusses whether elevated homocysteine levels is a risk factor for dementia or merely a risk marker for some underlying process. Amy Chan and Thomas B. Shea then examine the connection between dietary deficiencies of folate and Vitamin E and the development of neurofibrillary tangles of tau protein, a hallmark of Alzheimer's disease.
Moving on to possible therapies, Sigfrido Scarpa and colleagues at the University of Rome investigated S-adenosylmethionine (SAM) metabolism in cell cultures, which might be used to interfere with amyloid-ß overproduction, another characteristic of AD. In a second contribution from that institution, Rosaria A. Cavallaro and co-workers looked at whether SAM administration influences gene expression in the brain.
Flaubert Tchantchou of the University of Maryland School of Pharmacy discusses the various metabolic processes involved in homocysteine regulation and the various consequences of folate deficiency.
Folate is one of the B vitamins. Martha Clare Morris and colleagues at the Rush University Medical Center expand on the possible role of all of the B vitamins in cognitive decline and comment on the potential benefits and harms of vitamin supplementation. In another contribution, Morris and coworkers report on a prospective cohort study of 1041 patients where dietary folate, B-12 and B-6 levels were not associated with the development of Alzheimer's disease.SPECIAL ISSUE: FOLATE AND HOMOCYSTEINE IN ALZHEIMERS DISEASE
Aron M. Troen, Barbara Shukitt-Hale, Wei-Hsun Chao, Bina Albuquerque, Donald E. Smith, Jacob Selhub, Jacob RosenbergElevated plasma homocysteine levels: Risk factor or risk marker for the development of dementia and Alzheimer's disease?
Sudha SeshadriDietary and genetically-induced oxidative stress alter tau phosphorylation: Influence of folate and apolipoprotein E deficiency
Amy Chan and Thomas B. SheaGene silencing through methylation: An epigenetic intervention on Alzheimer disease
Sigfrido Scarpa, Rosaria A. Cavallaro, Fabrizio D'Anselmi, Andrea FusoThe effect of S-adenosylmethionine on CNS gene expression studied by cDNA microarray analysis
Rosaria A. Cavallaro, Andrea Fuso, Fabrizio D'Anselmi, Laura Seminara, Sigfrido ScarpaHomocysteine metabolism and various consequences of folate deficiency
Martha Clare Morris, Denis A. Evans, Julie A. Schneider, Christine C. Tangney, Julia L. Bienias, Neelum T. AggarwalSelected Abstracts From the "Wellness For Persons With Dementia" Symposium
Astrid Engelen | alfa
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Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
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Water molecules exist in two different forms with almost identical physical properties. For the first time, researchers have succeeded in separating the two forms to show that they can exhibit different chemical reactivities. These results were reported by researchers from the University of Basel and their colleagues in Hamburg in the scientific journal Nature Communications.
From a chemical perspective, water is a molecule in which a single oxygen atom is linked to two hydrogen atoms. It is less well known that water exists in two...
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