Mass spectrometry based methods were used to reveal that polyubiquitin chains, including lysine 48-, lysine 63-, and lysine 11-linked chains, accumulated early in brains from a transgenic HD mouse model, brains from a knock-in mouse model of HD, and in brains from human HD patients(109) and also in brains from Alzheimer's disease patients.
This observed impairment of the UPS in R6/2 cell synapses [30] coupled with the finding that K48-linked polyubiquitin chains accumulate in R6/2, HdhQ150/Q150 HD knock-in mice and HD patient brains [7] suggests that while UPS impairment can occur as a consequence of mutant htt expression, it is not necessarily a global consequence of mutant htt expression.
And dolphins, at the top of the food chain, accumulate the heavy metals and other toxins we dump in the sea.
Quite apart from the ethics of eating a sentient animal, cetacean meat is positively dangerous – a result of their place at the top of the marine food chain, accumulating heavy metals in their bodies.
For example Mikhail A. Fedonkin suggested that an increase in the length of food chains may have contributed, as animals higher up the food chain accumulate greater amounts of waste products and toxins relative to their size, and biomineralization may have been a way of isolating excess carbonates or silicates consumed with prey.
Their molecular stability has maintained them intact, and they have entered the food chain, accumulating in the fat of exposed organisms.
The n-3 LC-PUFA are produced in marine microalgae (Harwood and Guschina, 2009) and are passed up the food chain, accumulating in fish lipids (Tocher, 2003).
Additionally, in rats, the stability of a protease-cleavable linker containing a valine-citrulline dipeptide was dependent on the conjugation site: the heavy chain ADC accumulated DAR 1 species, whereas the light chain ADC remained almost completely intact.
The Guardian's analysis has also discovered that the supermarket chain: Has accumulated large amounts of unused land close to existing superstores.
The registration and tracking errors of each component along this chain are accumulated.
With increasing plaque formation in the frontal cortex, ferritin light-chain (FTL) accumulated in the core of plaques, as seen in sections from a 10 month-old animal.
