[Diet as a risk factor for Alzheimer's disease].

Chronic exposure to an unhealthy diet is one of the causes of civilization diseases and significantly affects the average longevity. The impact of diet on health is extremely complicated due to the chemical diversity of its composition. The diet provides over 26,000 biochemicals and even more of their metabolites.

Correction: The Calculator of Anti-Alzheimer's Diet. Macronutrients.

[This corrects the article DOI: 10.1371/journal.pone.

The Calculator of Anti-Alzheimer's Diet. Macronutrients.

The opinions about optimal proportions of macronutrients in a healthy diet have changed significantly over the last century. At the same time nutritional sciences failed to provide strong evidence backing up any of the variety of views on macronutrient proportions. Herein we present an idea how these proportions can be calculated to find an optimal balance of macronutrients with respect to prevention of Alzheimer's Disease (AD) and dementia.

Correlation of Alzheimer's disease death rates with historical per capita personal income in the USA.

Alzheimer's disease (AD) is a progressive degenerating disease of complex etiology. A variety of risk factors contribute to the chance of developing AD. Lifestyle factors, such as physical, mental and social activity, education, and diet all affect the susceptibility to developing AD.

Maintenance of long-term potentiation in hippocampal mossy fiber-CA3 pathway requires fine-tuned MMP-9 proteolytic activity.

Mechanisms of synaptic plasticity involve proteolytic activity mediated by a complex system of proteases, including members of metalloproteinase (MMP) family. In particular, MMP-9 is critical in LTP maintenance in the Schaffer collateral-CA1 pathway and in the acquisition of hippocampus-dependent memory. Recent studies from this laboratory revealed that in the mossy fiber-CA3 (MF-CA3) projection, where LTP induction and expression are largely presynaptic, MMPs blockade disrupts LTP maintenance and that LTP induction is associated with increased MMP-9 expression.

Lack of cyclin D2 impairing adult brain neurogenesis alters hippocampal-dependent behavioral tasks without reducing learning ability.

The exact function of the adult brain neurogenesis remains elusive, although it has been suggested to play a role in learning and memory processes. In our studies, we employed cyclin D2 gene knockout (cD2 KO) mice showing impaired neurogenesis as well as decreased hippocampal size. However, irrespectively of the genetic background of cD2 KO mice, this phenotype resulted in neither deficits in the hippocampal-dependent learning ability nor the memory formation.

Influence of vitamins C and E on cytotoxic activity of adriamycin in chosen cell cultures.

Influence of different concentrations of ascorbic acid (vitamin C) and dl-alpha-tocopherol acetate (vitamin E) on in vitro cytotoxic adriamycin activity, in: embryonic human fibroblasts (CLV102), human melanoma cells (ME18) and adriamycin-resistant subline cells (ME18/R), was studied. IC50 value for each compound (compound concentration in the culture medium, for which 50% of cells survive) was determined. Cells' survival after the used agent was examined with trypan blue test.