Results 131 to 140 of about 34,492 (275)

Harmonizing NAD+ metabolism with CeMOF nanozyme to orchestrate intraocular pressure modulation for glaucoma treatment

open access: yesVIEW, EarlyView.
Our findings demonstrate that NAD+ metabolism dysregulation contributes to elevated intraocular pressure in glaucoma. Supplementation with NAD+ precursors reduces IOP by alleviating oxidative stress, cellular senescence, and extracellular matrix deposition.
Youjia Zhang   +10 more
wiley   +1 more source

L‐Tryptophan Produced by Bifidobacterium pseudocatenulatum NCU‐08 Delays Aging in SAMP8 Mice by Activating the Sirt1/P53/P21/Rb Signaling Pathway

open access: yesAging Cell, EarlyView.
Bifidobacterium pseudocatenulatum NCU‐08, isolated from the feces of centenarians, facilitated the entry of L‐tryptophan into hippocampal neurons of SAMP8 mice, where it was metabolized into NAD+. The increased NAD+ levels activated Sirt1 protein, thereby suppressing the expression of senescence‐associated proteins P53, P21, and Rb, ultimately delaying
Tangchang Xu   +8 more
wiley   +1 more source

Untargeted metabolomics of colonic digests reveals kynurenine pathway metabolites, dityrosine and 3-dehydroxycarnitine as red versus white meat discriminating metabolites [PDF]

open access: yes, 2016
Epidemiological research has demonstrated that the consumption of red meat is an important risk factor for the development of colorectal cancer (CRC), diabetes mellitus and cardiovascular diseases.
De Smet, S.   +5 more
core   +2 more sources

Xanthurenic acid and its rôle in the trytophane metabolism of pyroxidine-deficient rats [PDF]

open access: yes, 1943
In a previous publication (1) the isolation of a green pigment from the urine of pyridoxine-deficient rats was described. The green pigment was shown to be the product of a reaction between ferric ammonium sulfate or other ferric salts and a compound ...
Haagen-Smit, A. J.   +2 more
core  

Metabolism within the tumor microenvironment and its implication on cancer progression: an ongoing therapeutic target [PDF]

open access: yes, 2018
Since reprogramming energy metabolism is considered a new hallmark of cancer, tumor metabolism is again in the spotlight of cancer research. Many studies have been carried out and many possible therapies have been developed in the last years.
Abdel-Aziz   +431 more
core   +2 more sources

Multi‐Omics Reveal the Metabolic Changes in Cumulus Cells During Aging

open access: yesCell Proliferation, EarlyView.
Fatty acid β‐oxidation was elevated in cumulus cells from older mice. Tryptophan metabolism in aged cumulus cells was active. Supplementing with 5‐HT could mitigate aging damage in oocytes. ABSTRACT Maternal age has been reported to impair oocyte quality.
Liangyue Shi   +6 more
wiley   +1 more source

Neopterin and Kynurenine in Mesangioproliferative Glomerulonephritis

open access: yesPteridines, 1998
Serum kynurenine and neopterin concentrations were determined in patients with chronic mesangioproliferative glomerulonephritis with normal renal function and in patients with chronic renal failure. Significantly increased kynurenine and neopterin levels
Martinsons Agris   +3 more
doaj   +1 more source

KYNA Ameliorates Hepatic Ischemia–Reperfusion Injury by Activating the Hippo Signalling Pathway via FTO‐Dependent m6A Demethylation of LATS1

open access: yesCell Proliferation, EarlyView.
Our study elucidates the cellular and molecular mechanisms underlying KYNA's protective effects against HIRI. It emphasises that KYNA modulates the methylation status of the Hippo signalling pathway through the activation of AHR, thereby mitigating damage by promoting LATS1 degradation and facilitating the nuclear translocation of YAP. ABSTRACT Hepatic
Wenjie Zheng   +10 more
wiley   +1 more source

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