Download PDF by Thomas Nyström, Heinz D. Osiewacz: Model Systems in Aging (Topics in Current Genetics, Vol. 3)

By Thomas Nyström, Heinz D. Osiewacz

ISBN-10: 3540024905

ISBN-13: 9783540024903

Getting older is the innovative decline in organic capabilities over the years. This decline objectives macromolecules, cells, tissues and, for that reason, complete organisms. regardless of substantial growth within the improvement of testable speculation pertaining to getting older in an evolutionary context, a unifying idea of the molecular/physiological mechanistic explanations of getting older has no longer been reached. actually, is it no longer transparent to what volume getting older is a programmed or stochastic procedure. This ebook takes the reader from unicellular bacterial deterioration through senescence in yeast and worms to getting older in rodents and people, permitting a comparative view on similarities and adjustments in several genetic version structures. different version structures are scrutinized within the mild of latest getting older speculation, reminiscent of the loose radical and genomic instability theories.

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Additional info for Model Systems in Aging (Topics in Current Genetics, Vol. 3)

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In this study, about 15% of the analyzed genes leading to an extended life span were found to code for mitochondrial functions (Lee et al. 2002). , heteroduplex analysis and PCR strategies to demonstrate age-related mtDNA deletions and point mutations C. elegans and in mammals, systematic iRNA analysis of large sets of genes in C. elegans, a screen to identify asymmetric segregation of mitochondria in yeast) an important if not causal role of mitochondria in aging processes is unravelled. 5 Conclusions The data and conclusions derived from intensive investigations of the fungal aging model P.

In addition to this type of 30 Heinz D. Osiewacz common mechanism, mtDNA rearrangements were found to occur utilizing different GC-rich palindromes able to form stem-loop secondary structures. These mtDNA rearrangements appear to be the result of single- or double-strand breaks and subsequent ligation processes (de Vries et al. 1981). Apart from such processes in which sequences of the standard mtDNA are involved, another type of senescent-related mtDNA rearrangement was found in a number of natural isolates in the genus Neurospora.

Anserina strains with different lifespan. Biogerontology 3:143-153 Bulpitt KJ, Piko L (1984) Variation in the frequency of complex forms of mitochondrial DNA in different brain regions of senescent mice. Brain Res 300:41-48 Caten CE, Handley L (1978) Vegetative death syndrome in Aspergillus glaucus. Bull Br Mycol Soc 12:114 Chevaugeon J, Digbeu S (1960) Un second facteur cytoplasmique infectant chez le Pestalozzia annulata. C R Acad Sci 251:3043-3061 Cummings DJ, Belcour L, Grandchamp C (1979) Mitochondrial DNA from Podospora anserina.

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Model Systems in Aging (Topics in Current Genetics, Vol. 3) by Thomas Nyström, Heinz D. Osiewacz

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