Sun Protection Intervention for Urban Youth

Introduction: Skin cancer is less prevalent in persons with darker skin color compared to those with light skin, but contrarily is associated with greater mortality rates. Experts agree this is primarily due to late detection. Challenges in early detection include low public awareness, uncommon presentation, lower index of suspicion among health care providers, and decreased access to specialty care. To address some of these barriers, we designed a survey-based study to discover current beliefs, perceptions, and attitudes of urban youth towards sun protection before and after an educational intervention. Methods: In 2022, 17 children living in metro Detroit participated in an educational presentation regarding sun protection and completed pre- and post- surveys. Statistical significance was calculated via Chi-square tests. Results: After education, there was a significant increase in likelihood of sunscreen application before going outdoors (p \u3c 0.05). There was no significant difference after education regarding sunscreen beliefs (p = 0.463), sunscreen application frequency (p= 0.835), reapplication of sunscreen (p=1.074), daily sunscreen application (p=0.099), alternative sun protection (p=0.863), and likelihood of sharing about sun protection (p=0.227). Conclusions: This study was paired with a program that encouraged children to be active outside. The aim was to increase the likelihood of sunscreen application before going outdoors. In the pre-survey, more people said they would tell family and friends, but this was not reflected in the post survey. Future directions could include an interactive activity to share educational information and reinforce objectives

Elevated Expression of Phospholipid Transfer Protein in Bone Marrow Derived Cells Causes Atherosclerosis

Background: Phospholipid transfer protein (PLTP) is expressed by various cell types. In plasma, it is associated with high density lipoproteins (HDL). Elevated levels of PLTP in transgenic mice result in decreased HDL and increased atherosclerosis. PLTP is present in human atherosclerosis lesions, where it seems to be macrophage derived. The aim of the present study is to evaluate the atherogenic potential of macrophage derived PLTP. Methods and Findings: Here we show that macrophages from human PLTP transgenic mice secrete active PLTP. Subsequently, we performed bone marrow transplantations using either wild type mice (PLTPwt/wt), hemizygous PLTP transgenic mice (huPLTPtg/wt) or homozygous PLTP transgenic mice (huPLTPtg/tg) as donors and low density lipoprotein receptor deficient mice (LDLR-/-) as acceptors, in order to establish the role of PLTP expressed by bone marrow derived cells in diet-induced atherogenesis. Atherosclerosis was increased in the huPLTPtg/wt → LDLR-/ - mice (2.3-fold) and even further in the huPLTPtg/tg→LDLR-/ - mice (4.5-fold) compared with the control PLTPwt/wt→LDLR-/- mice (both P<0.001). Plasma PLTP activity levels and non-HDL cholesterol were increased and HDL cholesterol decreased compared with controls (all P<0.01). PLTP was present in atherosclerotic plaques in the mice as demonstrated by immunohistochemistry and appears to co-localize with macrophages. Isolated macrophages from PLTP transgenic mice do not show differences in cholesterol efflux or in cytokine production. Lipopolysaccharide activation of macrophages results in increased production of PLTP. This effect was strongly amplified in PLTP transgenic macrophages. Conclusions: We conclude that PLTP expression by bone marrow derived cells results in atherogenic effects on plasma lipids, increased PLTP activity, high local PLTP protein levels in the atherosclerotic lesions and increased atherosclerotic lesion size