Abstract:
:The ability to sense and respond to stressful conditions is essential to maintain organismal homeostasis. It has long been recognized that stress response factors that improve survival in changing conditions can also influence longevity. In this review, we discuss different strategies used by animals in response to decreased O(2) (hypoxia) to maintain O(2) homeostasis, and consider interactions between hypoxia responses, nutritional status, and H(2)S signaling. O(2) is an essential environmental nutrient for almost all metazoans as it plays a fundamental role in development and cellular metabolism. However, the physiological response(s) to hypoxia depend greatly on the amount of O(2) available. Animals must sense declining O(2) availability to coordinate fundamental metabolic and signaling pathways. It is not surprising that factors involved in the response to hypoxia are also involved in responding to other key environmental signals, particularly food availability. Recent studies in mammals have also shown that the small gaseous signaling molecule hydrogen sulfide (H(2)S) protects against cellular damage and death in hypoxia. These results suggest that H(2)S signaling also integrates with hypoxia response(s). Many of the signaling pathways that mediate the effects of hypoxia, food deprivation, and H(2)S signaling have also been implicated in the control of lifespan. Understanding how these pathways are coordinated therefore has the potential to reveal new cellular and organismal homeostatic mechanisms that contribute to longevity assurance in animals.
journal_name
Front Genetjournal_title
Frontiers in geneticsauthors
Iranon NN,Miller DLdoi
10.3389/fgene.2012.00257subject
Has Abstractpub_date
2012-11-27 00:00:00pages
257issn
1664-8021journal_volume
3pub_type
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journal_title:Frontiers in genetics
pub_type: 杂志文章
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pub_type: 杂志文章,评审
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pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Frontiers in genetics
pub_type: 杂志文章,评审
doi:10.3389/fgene.2018.00517
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doi:10.3389/fgene.2019.00573
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journal_title:Frontiers in genetics
pub_type: 杂志文章
doi:10.3389/fgene.2018.00646
更新日期:2018-12-11 00:00:00
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journal_title:Frontiers in genetics
pub_type: 杂志文章,评审
doi:10.3389/fgene.2019.00303
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journal_title:Frontiers in genetics
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Frontiers in genetics
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