PubMed | Nutrition, Cell Biology and Physiology and., University of North Carolina at Chapel Hill, From the Curriculum in Genetics & Molecular Biology. and From the Curriculum in Genetics & Molecular Biology
Type: Journal Article | Journal: The Journal of biological chemistry | Year: 2016
Proliferation and differentiation of intestinal epithelial cells (IECs) occur in part through precise regulation of key transcription factors, such as SOX9. MicroRNAs (miRNAs) have emerged as prominent fine-tuners of transcription factor expression and activity. We hypothesized that miRNAs, in part through the regulation of SOX9, may mediate IEC homeostasis. Bioinformatic analyses of the SOX9 3-UTR revealed highly conserved target sites for nine different miRNAs. Of these, only the miR-30 family members were both robustly and variably expressed across functionally distinct cell types of the murine jejunal epithelium. Inhibition of miR-30 using complementary locked nucleic acids (LNA30bcd) in both human IECs and human colorectal adenocarcinoma-derived Caco-2 cells resulted in significant up-regulation of SOX9 mRNA but, interestingly, significant down-regulation of SOX9 protein. To gain mechanistic insight into this non-intuitive finding, we performed RNA sequencing on LNA30bcd-treated human IECs and found 2440 significantly increased genes and 2651 significantly decreased genes across three time points. The up-regulated genes are highly enriched for both predicted miR-30 targets, as well as genes in the ubiquitin-proteasome pathway. Chemical suppression of the proteasome rescued the effect of LNA30bcd on SOX9 protein levels, indicating that the regulation of SOX9 protein by miR-30 is largely indirect through the proteasome pathway. Inhibition of the miR-30 family led to significantly reduced IEC proliferation and a dramatic increase in markers of enterocyte differentiation. This in-depth analysis of a complex miRNA regulatory program in intestinal epithelial cell models provides novel evidence that the miR-30 family likely plays an important role in IEC homeostasis.
PubMed | Service de gynecologie, Service de gastro enterologie, Service de pediatrie generale, Nancy University Hospital Center and 37 more.
Type: Journal Article | Journal: Geriatrie et psychologie neuropsychiatrie du vieillissement | Year: 2016
The number of serum 25-hydroxyvitamin D (25OHD) assays has increased tenfold in France in less than 10 years, sometimes for invalidated reasons. In 2013, the French National Authority for Health (Haute autorit de sant, or HAS) limited the indications for serum 25OHD measurements to rickets/osteomalacia, older adults with recurrent falls, monitoring of kidney transplant in adults, and surgical treatment of obesity in adults. Our aim here was to note that other indications for serum 25OHD measurements are supported by previous literature and by a number of national and international recommendations, in particular the following: any situation of bone fragility, any chronic renal failure <45 mL/min/1.73m
Menon P.,International Food Policy Research Institute |
Covic N.M.,North West University South Africa |
Harrigan P.B.,Nutrition |
Horton S.E.,University of Waterloo |
And 5 more authors.
Annals of the New York Academy of Sciences | Year: 2014
Undernutrition among women and children contributes to almost half the global burden of child mortality in developing countries. The impact of nutrition on economic development has highlighted the need for evidence-based solutions and yielded substantial global momentum. However, it is now recognized that the impact of evidence-based interventions is limited by the lack of evidence on the best operational strategies for scaling up nutrition interventions. With the goal of encouraging greater engagement in implementation research in nutrition and generating evidence on implementation and utilization of nutrition interventions, this paper brings together a framework and a broad analysis of literature to frame and highlight the crucial importance of research on the delivery and utilization of nutrition interventions. The paper draws on the deliberations of a high-level working group, an e-consultation, a conference, and the published literature. It proposes a framework and areas of research that have been quite neglected, and yet are critical to better understanding through careful research to enable better translation of global and national political momentum for nutrition into public health impact. © 2014 New York Academy of Sciences.
PubMed | Nutrition, MSc in Rehabilitation Sciencies, University of Northern Paraná and UEL UNOPAR
Type: Journal Article | Journal: International archives of otorhinolaryngology | Year: 2015
IntroductionPoor diet habits and inadequate intake of nutrients are a concern in the elderly. Nutritional education with guidance may improve the results of the treatment of vertigo. ObjectiveEvaluate the presence of benign paroxysmal positional vertigo (BPPV) associated with feeding habits. MethodsCross-sectional study with elderly people living independently. We evaluated nutritional habits through the method of dietary 24-hour recall and manipulation of Dix-Hallpike. ResultsBased on a sample of 487 individuals, 117 had BPPV. Among the 117 elderly patients with BPPV, 37 (31.62%) had inadequate feeding. From those 370 individuals without BPPV, 97 (26.21%) had inappropriate feeding. No significant association between nutritional habits and BPPV in the total population was observed (p=0.3064). However, there was significant relation between BPPV and inadequate carbohydrate intake (p=0.0419) and insufficient fiber intake (p=0.03), and the diet of these subjects was rich in polyunsaturated fatty acids (p=0.0084). ConclusionThese data correlate with the dyslipidemia and hypertriglyceridemia status, making it extremely important to reduce the intake of fats and carbohydrates and increase the fiber intake to stabilize triglycerides and thus minimize harmful effects on the inner ear. Food readjustment is suggested in patients with BPPV, along with the work of a multidisciplinary team to improve the quality of the elderly.
Koletzko B.,Ludwig Maximilians University of Munich |
Bauer C.P.,Fachklinik Gaissach |
Bung P.,Gynecology Clinic |
Cremer M.,Nutrition Consultant |
And 11 more authors.
Annals of Nutrition and Metabolism | Year: 2014
Diet and physical activity before and during pregnancy affect short- and long-term health of mother and child. The energy needs at the end of pregnancy increase only by about 10% compared to nonpregnant women. An excessive energy intake is undesirable since maternal overweight and excessive weight gain can increase the risks for a high birth weight and later child overweight and diabetes. Maternal weight at the beginning of pregnancy is especially important for pregnancy outcome and child health. Women should strive to achieve normal weight already before pregnancy. Regular physical activity can contribute to a healthy weight and to the health of pregnant women. The need for certain nutrients increases more than energy requirements. Before and during pregnancy, foods with a high content of essential nutrients should be preferentially selected. Supplements should include folic acid and iodine, iron (in case of suboptimal iron stores), the ω-3 fatty acid docosahexaenoic acid (in case of infrequent consumption of ocean fish) and vitamin D (in case of decreased sun exposure and decreased endogenous vitamin D synthesis). Pregnant women should not smoke and not stay in rooms where others smoke or have smoked before (passive smoking). Alcohol consumption should be avoided, since alcohol can harm unborn children. © 2014 S. Karger AG, Basel.