ABSTRACT
Maternal metabolic status influences pregnancy and, consequently, the perinatal outcome. Resistin is a pro-inflammatory adipokine predominantly expressed and secreted by mononuclear cells, adipose tissue, and placental trophoblastic cells during pregnancy. Recently, we reported an inverse association between maternal resistin levels and fetal low-density lipoprotein cholesterol (LDL-C). Then, in this work, we used a human placental explant model and the trophoblast cell line JEG-3 to evaluate whether resistin affects placental LDL-C uptake. Resistin exposure induced the transcription factor SREBP-2, LDLR, and PCSK9 mRNA expression, and changes at the protein level were confirmed by immunohistochemistry and Western blot. However, for LDLR, the changes were not consistent between mRNA and protein levels. Using a labeled LDL-cholesterol (BODIPY FL LDL), uptake assay demonstrated that the LDL-C was significantly decreased in placental explants exposed to a high dose of resistin and a lesser extent in JEG-3 cells. In summary, resistin induces PCSK9 expression in placental explants and JEG-3 cells, which could be related to negative regulation of the LDLR by lysosomal degradation. These findings suggest that resistin may significantly regulate the LDL-C uptake and transport from the maternal circulation to the fetus, affecting its growth and lipid profile.
Subject(s)
Proprotein Convertase 9 , Receptors, LDL , Pregnancy , Humans , Female , Proprotein Convertase 9/genetics , Proprotein Convertase 9/metabolism , Cholesterol, LDL , Receptors, LDL/metabolism , Resistin , Cell Line, Tumor , Placenta/metabolism , RNA, Messenger/metabolismABSTRACT
Dilated cardiomyopathy is usually not reversible. In a few cases diverse etiologies can be treated and cardiomyopathy may disappear or improve significantly. The case of a young man with hypothyroidism and dilated cardiomyopathy is presented. After thyroid hormone replacement, a severe left ventricular dysfunction became reverted.
Subject(s)
Humans , Male , Adult , Thyroxine/therapeutic use , Cardiomyopathy, Dilated/etiology , Cardiomyopathy, Dilated/drug therapy , Hypothyroidism/complications , Echocardiography , Cardiomyopathy, Dilated/diagnostic imagingABSTRACT
BACKGROUND: In an effort to form and sustain community-academic partnerships (CAPs) to enhance clinical and translational research, an assessment of needs for selecting and implementing evidence-based programs (EBPs) was conducted among a group of community-based organizations (CBOs) throughout Puerto Rico. METHODS: The survey was based on an instrument developed by the Cancer Prevention and Control Research Network. It assessed specific service information, program selection/implementation processes, knowledge and perception of EBPs, funding venues, evaluation processes, and capacity and training needs. Recruitment consisted of contacting 100 nonprofit organizations in Puerto Rico that work or address specific health areas, namely, cancer, neurological disorders, HIV, and cardiovascular health. RESULTS: The survey revealed wide variability in understanding what constitutes an EBP. Training needs for building a productive translational research process also were identified. Prominent among these were securing funding for ongoing operations, utilizing data for decision making, developing collaborations, managing information, conducting community needs assessments, and program evaluation. CONCLUSIONS: These findings point to important implications for promoting community-campus partnerships for advancing clinical and translational research.