Sulfur-based redox alterations in long-lived Snell dwarf mice
نویسندگان
چکیده
منابع مشابه
Hormone-treated snell dwarf mice regain fertility but remain long lived and disease resistant.
Snell dwarf mice have multiple hormonal deficits, but the way in which these deficits postpone aging are still uncertain. In this study, Snell dwarf mice received 11 weeks of growth hormone and thyroxine injections that increased their weight by approximately 45%, although they remained much smaller than controls. The hormone treatment also restored fertility to male dwarf mice. Despite these e...
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Studies of the mTOR pathway have prompted speculation that diminished mTOR complex-1 (mTORC1) function may be involved in controlling the aging process. Our previous studies have shown diminished mTORC1 activity in tissues of three long-lived mutant mice: Snell dwarf mice, growth hormone receptor gene disrupted mice (GHRKO), and in this article, mice deficient in the pregnancy-associated protei...
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Maintaining proteostasis is thought to be a key factor in slowed aging. In several growth-restricted models of long-life, we have shown evidence of increased proteostatic mechanisms, suggesting that proteostasis may be a shared characteristic of slowed aging. The Snell dwarf mouse is generated through the mutation of the Pit-1 locus causing reductions in multiple hormonal growth factors and mTO...
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Mutations that extend nematode longevity by interference with IGF-I/insulin sensing pathways also lead to resistance to multiple forms of stress. Here, we report that skin-derived fibroblasts from Snell dwarf mice, already known to show increased longevity and delayed aspects of aging, are resistant to multiple forms of cellular stress, including UV light, heat, paraquat, H2O2, and the toxic me...
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Pathways that control aging act via regulated biochemical processes, among which metabolism of xenobiotics (potentially harmful chemical agents encountered as environmental toxicants, for example, drugs, or produced internally) is one possible candidate. A new study of long-lived Ghrhr mutant mice reports that increased bile acid levels activate xenobiotic metabolism via the nuclear receptor, f...
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ژورنال
عنوان ژورنال: Mechanisms of Ageing and Development
سال: 2013
ISSN: 0047-6374
DOI: 10.1016/j.mad.2013.05.004