Nutrition Commons^™

Isolation And Characterization Of Natural Alpha-Glucosidase Inhibitors From Antioxidant Rich Red Wine Grapes (Vitis Vinifera), Hoda Chaouki Kadouh

Wayne State University Dissertations

Background: Diabetes is currently a global public health problem affecting people at all ages. Dietary antioxidants have been associated with a reduced risk of type 2 diabetes. Grape pomace contains considerable amounts of polyphenols and it has been reported to exhibit an inhibitory activity against alpha- glucosidases. Alpha-glucosidases, in turn, play a major role in controlling starch digestion and therefore postprandial blood glucose, a target for diabetes management.

Objective: This study aims to investigate the anti-diabetes potential of a selection of six grape pomaces and prepare and purify active components in the active variety that specifically inhibit intestinal alpha-glucosidases. The …

Uracil Accumulation Response To Folate Depletion Is A Function Of Dna Repair Imbalance That May Be A Mechanism Of Aging, Hongzhi Ma

Wayne State University Dissertations

Folate is an essential nutrient for human. They carry and transfer one carbon units. They has important biological functions during many reactions, like DNA synthesis, RNA synthesis, DNA methylation, DNA repair, cell division and growth. Through biochemical techniques to determine the gene expression, enzyme activity, uracil level in DNA, and through microbiological assay to determine the folate level, elucidates mechanism of uracil accumulation response to folate depletion. The findings present folate deficiency status affects the uracil DNA glycosylase activity, and uracil initiated DNA base excising repair. DNA repair ability decide whether there is uracil accumulation under the folate depletion condition …

Metabolic Syndrome In Obese African American Adolescents, Yulyu Yeh

Wayne State University Dissertations

Limited research regarding metabolic syndrome (MetS) has been conducted in obese African American adolescents (OAAA) using the International Diabetes Federation IDF criteria. MetS is a constellation of risk factors that increase the risk for chronic diseases and is defined as presence of any 3 or more of the 5 criteria: fasting glucose 100mg/dl, waist circumference 90th percentile, triglycerides 150 mg/dl, blood pressure (BP) 130/85 mmHg and HDL < 40mg/dl. The aim of this study was to assess the incidence of MetS in OAAA by using the IDF criteria and the relationship with diet, fast food consumption, nutrition knowledge, home food environment (HFE), and serum calcium, leptin, 1,25-dihydroxy vitamin D (1, 25 D3) levels. One hundred and fifty one OAAA (mean age: 14.3 ± 1.4 years, 65.6% girls, mean BMI: 37.4±7.2 kg/m2) in a metropolitan area took part in this study. Anthropometric data and fasting blood samples were collected. Participants completed a set of questionnaires regarding diet, fast food consumption, and nutrition knowledge. HFE was completed by the care givers. The MetS rate for OAAA was 61.6% and boys had higher MetS than girls (73.1%, 55.6% respectively). OAAA without MetS had higher serum calcium and 1,25 D3 level but no significant difference were found in food consumption, nutrition knowledge, and HFE. Total cholesterol /HDL ratio and Insulin resistance increased the odds of MetS by 55% and 10% and 1,25 D3 decrease the odds of MetS by 2%. Even though high fast food consumption, lack of nutrition knowledge and poor food environment were negatively associated with obesity, they didn't contribute to MetS. Increase serum vitamin D and calcium level might be beneficial to reduce MetS in OAAA population.

Multifaceted Nutritional Intervention In Hemodialysis Patients, Zulfitri Azuan Mat Daud

Wayne State University Dissertations

Mortality rate in patients undergoing chronic hemodialysis (HD) in the United States remain unacceptably high despite improvement in dialysis technology. Cardiovascular disease (CVD) account for more than 50% of the premature death in this population. Evidences indicate that the accelerated CVD are attributed to by malnutrition, inflammation, dyslipidemia and oxidative stress. Dietary intervention using nutrients with antioxidant, anti-inflammatory, and potential lipid altering properties to correct the aforementioned problems remain inconclusive. Furthermore, such nutritional intervention trial is often hampered by poor compliance related to medical and socioeconomic barriers. Therefore, a series of randomized, double-blind, placebo-controlled, parallel trials were undertaken to document …