PubMed · 7735056
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
P I Reed. 1994. The ECP-IM intervention study.. https://doi.org/10.1097/00008469-199412002-00018
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Ascorbic acid (AsA) is an essential nutritional component and powerful antioxidant in vegetables, and in plants, AsA levels are regulated by light. AsA levels in the leaves of Chinese chive (Allium tuberosum Rottler ex Spr), a popular vegetable, are poorly understood. Thus, this study was performed to assess the influence of light on AsA biosynthesis in chive and select related genes (AtuGGP1 and AtuGME1); in addition, bioinformatic analyses and gene expression level assays were performed. The biological information obtained for AtuGGP1 and AtuGME1 was analysed with several tools, including NCBI, DNAMAN, and MEGA11. After different light treatments were performed, the Chive AsA content and AtuGGP1 and AtuGME1 expression levels were determined. These results suggest that 1) compared with natural light, continuous darkness inhibited AsA synthesis in chives. 2) The amino acid sequences of AtuGGP1 and AtuGME1 are very similar to those of other plants. 3) The trends observed for the expression levels of AtuGGP1 and AtuGME1 were consistent with the AsA content observed in chives. Hence, we speculated that light controls AsA biosynthesis in chives by regulating AtuGGP1 and AtuGME1 expression. This study provided impactful and informative evidence regarding the functions of GGP and GME in chives.
Instabilities of ascorbate and dehydroascorbate throughout sample processing are clearly a significant aspect of quantifying of them. Contents of ascorbate in biological fluids decrease with measurable oxidation occurring within minutes to hours. Similarly, dehydroascorbate disappears with chemical or enzymatic degradation within minutes. The half-life of dehydroascorbate in human heparinized plasma was approximately 2 min. These results indicated that the amount of dehydroascorbate present in sample solutions is a function of both the oxidation of ascorbate and the degradation of dehydroascorbate during the processing of biological fluids. To quantify ascorbate and dehydroascorbate concentrations in biological fluids including circulating blood plasma and urine, we established a high-performance liquid chromatographic method, which requires no pretreatment of sample solutions.
Asthma is a syndrome that may have many causes resulting in airway inflammation and hyperresponsiveness. The search for the causes of asthma has led to the investigation of genetic, atopic, viral, and nutritional factors. For the last 2 decades, a number of studies have linked particular nutrients to asthma. The studies have examined both the suboptimal status of particular nutrients as causes of asthma and supplements of specific nutrients as therapy for asthma. We reviewed and analyzed data from these studies to determine the role of nutritional therapy in the management of asthma. The studies on food allergies reveal that IgE-mediated reactions to food are a minor cause of respiratory symptoms, affecting more children than adults. Currently, there are no available data to support the use of nutritional supplements in the treatment of chronic asthma.