University of North Carolina at Greensboro

About: University of North Carolina at Greensboro is a education organization based out in Greensboro, North Carolina, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 5481 authors who have published 13715 publications receiving 456239 citations. The organization is also known as: UNCG & UNC Greensboro.

Digestive Stability, Micellarization, and Uptake of β-Carotene Isomers by Caco-2 Human Intestinal Cells

Abstract: While isomeric profiles of carotenoids found in food often differ from those in body fluids and tissues, insights about the basis for these differences remain limited. We investigated the digestive stability, relative efficiency of micellarization, and cellular accumulation of trans and cis isomers of beta-carotene (BC) using an in vitro digestion procedure coupled with human intestinal (Caco-2) cells. A meal containing applesauce, corn oil, and either water-soluble beadlets (WSB) or Dunaliella salina (DS) as a BC source was subjected to simulated gastric and small intestinal digestion. BC isomers were stable during digestion, and the efficiency of micellarization of cis-BC isomers exceeded that of all-trans-BC isomers. The cellular profile of carotenoids generally reflected that in micelles generated during digestion, and intracellular isomerization was minimal. These data suggest that cis isomers of BC are preferentially micellarized during digestion and transferred across the brush-border surface of the enterocyte from mixed micelles with similar efficiency as all-trans-BC at the concentrations of the carotenoids utilized in this study.

Characterization of pu-erh tea using chemical and metabolic profiling approaches.

Abstract: In this study, the chemical constituents of pu-erh tea, black tea, and green tea, as well as those of pu-erh tea products of different ages, were analyzed and compared using a chemical profiling approach. Differences in tea processing resulted in differences in the chemical constituents and the color of tea infusions. Human biological responses to pu-erh tea ingestion were also studied by using ultraperformance liquid chromatography-quadrupole time-of-flight mass spectrometry (UPLC-QTOFMS) in conjunction with multivariate statistical techniques. Metabolic alterations during and after pu-erh tea ingestion were characterized by increased urinary excretion of 5-hydroxytryptophan, inositol, and 4-methoxyphenylacetic acid, along with reduced excretion of 3-chlorotyrosine and creatinine. This study highlights the potential for metabonomic technology to assess nutritional interventions and is an important step toward a full understanding of pu-erh tea and its influence on human metabolism.

Anger, disgust, and the negative aesthetic emotions: Expanding an appraisal model of aesthetic experience.

Abstract: Among Andres Serrano's many controversial photographs—images of corpses in a morgue, portraits of Ku Klux Klan members, images of blood and semen pressed between glass—Piss Christ stands out. Before a 1997 exhibition at the National Gallery of Victoria in Australia, the Catholic Church sued unsuccessfully to prevent the showing of Serrano's photographs. During the exhibition, Piss Christ was defaced twice in 2 days: ineffectively by a man with his bare hands, and effectively by a teenager with a hammer (?Protestor Damages Serrano Photo,? 1997). In an era where ignorance about the arts is high, negative emotions like anger, disgust, and contempt are common responses to provocative and challenging works. So what do psychological theories of aesthetic emotions have to say about negative responses to art? How can we understand the emotions that lead people to reject, censor, and deface works of art? The study of aesthetic emotions is central to the psychology of the art (Cupchik, 2006), yet essentially no research has been done on negative responses to art. The present research thus applies a recent appraisal model of aesthetic emotions (Silvia, 2005b) to anger and disgust in response to visual art. This model can explain when negative aesthetic emotions occur and predict subtle differences between similar emotions.

Interparental Hostility and Early Adolescent Problem Behavior: Spillover via Maternal Acceptance, Harshness, Inconsistency, and Intrusiveness

Abstract: To explore the link between interparental hostility and adolescent problem behaviors, the current study examines four important maternal parenting dimensions as potential mediators: acceptance, har...