Publications by authors named "Yungping Qiu"

2 Publications

  • Page 1 of 1

Sarcosine Is Uniquely Modulated by Aging and Dietary Restriction in Rodents and Humans.

Cell Rep 2018 10;25(3):663-676.e6

Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA; Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY, USA. Electronic address:

A hallmark of aging is a decline in metabolic homeostasis, which is attenuated by dietary restriction (DR). However, the interaction of aging and DR with the metabolome is not well understood. We report that DR is a stronger modulator of the rat metabolome than age in plasma and tissues. A comparative metabolomic screen in rodents and humans identified circulating sarcosine as being similarly reduced with aging and increased by DR, while sarcosine is also elevated in long-lived Ames dwarf mice. Pathway analysis in aged sarcosine-replete rats identify this biogenic amine as an integral node in the metabolome network. Finally, we show that sarcosine can activate autophagy in cultured cells and enhances autophagic flux in vivo, suggesting a potential role in autophagy induction by DR. Thus, these data identify circulating sarcosine as a biomarker of aging and DR in mammalians and may contribute to age-related alterations in the metabolome and in proteostasis.
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http://dx.doi.org/10.1016/j.celrep.2018.09.065DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6280974PMC
October 2018

Preparation of indapamide slow-release pellets.

Adv Ther 2004 Jul-Aug;21(4):238-46

School of Pharmacy, Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, PR China.

During the process of developing a slow-release formulation of indapamide, researchers created a drug-containing pellet coated with Eudragit RS100 (Rohm GMbH & Co. KG, Darmstadt, Germany) to control the rate at which the drug was released. The two main variables were the agglomerants used in the pellet preparation and the amount of Eudragit RS100 used to coat them. The optimal outcome was indicated by the greatest number of drug-containing pellets recovered through an 18- to 24-mesh sieve and a satisfactory 24-hour release curve. The kinetics of dissolution fit the Higuchi kinetics model. Stability tests of the drug pellets showed no notable changes in the rate of drug release, related substances (mean byproducts or impurities from interactions or decompositions), and drug content.
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http://dx.doi.org/10.1007/BF02850156DOI Listing
January 2005