Results 231 to 240 of about 170,260 (319)

A Method for the Estimation of Nicotinic Acid in Milk

open access: bronze, 1941
Eric Bailey   +3 more
openalex   +1 more source

Spatial distribution of nicotine concentrations in Berlin's surface waters and their potential sources. [PDF]

open access: yesEnviron Sci Pollut Res Int
Venohr M   +6 more
europepmc   +1 more source

Assessing Metabolic Ageing via DNA Methylation Surrogate Markers: A Multicohort Study in Britain, Ireland and the USA

open access: yesAging Cell, EarlyView.
DNA methylation was used to develop surrogate markers for over 500 metabolites, which were subsequently combined to develop a novel hybrid clock to assess metabolic ageing. The clock gave strong predictions of age in three cohorts (British, Irish and American) and the derived age accelerations were associated with multiple ageing risk factors and ...
Kexin Xu   +16 more
wiley   +1 more source

The Potential Impact of Oral Nicotine Pouches on Public Health: A Scoping Review. [PDF]

open access: yesNicotine Tob Res
Travis N   +7 more
europepmc   +1 more source

Serum Proteomic and Metabolomic Signatures of High Versus Low Physical Function in Octogenarians

open access: yesAging Cell, EarlyView.
Circulating factors are strongly implicated in modulating biological aging. In this study we show that the serum proteomic and metabolomic profile of high functioning octogenarians suggests lower activation of SASP, preservation of the tryptophan‐kynurenic pathway, higher lipophosphatidyl cholines promoting mitochondrial function, and reduced ...
Ceereena Ubaida‐Mohien   +11 more
wiley   +1 more source

Nicotinamide Riboside Supplementation Alleviates Testicular Aging Induced by Disruption of Qprt‐Dependent NAD+ De Novo Synthesis in Mice

open access: yesAging Cell, EarlyView.
In Qprt‐deficient mice, testicular NAD+ levels decline accelerated with age, leading to mitochondrial dysfunction, disrupted DSB repair, impaired meiotic sex chromosome inactivation, and germ cell loss. Nicotinamide riboside (NR) supplementation restores NAD+ levels and alleviates these defects, highlighting the importance of NAD+ de novo synthesis in ...
Yining Xu   +9 more
wiley   +1 more source

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