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https://www.readbyqxmd.com/read/29343315/subclinical-inflammation-affects-iron-and-vitamin-a-but-not-zinc-status-assessment-in-senegalese-children-and-cambodian-children-and-women
#1
Marion Fiorentino, Marlène Perignon, Khov Kuong, Chhoun Chamnan, Jacques Berger, Frank T Wieringa
OBJECTIVE: To assess the impact of the acute-phase response (APR) during inflammation on Fe, Zn and vitamin A biomarkers to allow accurate evaluation of micronutrient status in populations. DESIGN: Ferritin (FER), soluble transferrin receptor (TfR), retinol-binding protein (RBP), Zn, α1-acid glycoprotein and C-reactive protein concentrations were measured. Correction factors (CF) for each biomarker were calculated as the ratio for groups at different stages of inflammation v...
January 18, 2018: Public Health Nutrition
https://www.readbyqxmd.com/read/29340699/long-term-expression-of-glomerular-genes-in-diabetic-nephropathy
#2
Dominik Chittka, Bernhard Banas, Laura Lennartz, Franz Josef Putz, Kathrin Eidenschink, Sebastian Beck, Thomas Stempfl, Christoph Moehle, Simone Reichelt-Wurm, Miriam C Banas
Background: Although diabetic nephropathy (DN) is the most common cause for end-stage renal disease in western societies, its pathogenesis still remains largely unclear. A different gene pattern of diabetic and healthy kidney cells is one of the probable explanations. Numerous signalling pathways have emerged as important pathophysiological mechanisms for diabetes-induced renal injury. Methods: Glomerular cells, as podocytes or mesangial cells, are predominantly involved in the development of diabetic renal lesions...
January 11, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29338670/vitamin-a-and-vitamin-d-deficiencies-exacerbate-symptoms-in-children-with-autism-spectrum-disorders
#3
Min Guo, Jiang Zhu, Ting Yang, Xi Lai, Yuxi Lei, Jie Chen, Tingyu Li
OBJECTIVES: This study was designed to investigate the vitamin A (VA) and vitamin D (VD) levels in children with autism spectrum disorders (ASD) and to determine whether co-deficiency of VA and VD exacerbates clinical symptoms in autistic children. METHODS: The Autism Behavior Checklist, Childhood Autism Rating Scale (CARS), and Social Responsiveness Scale (SRS) were used to assess the symptoms of 332 children diagnosed as ASD. And the Gesell Developmental Scale (GDS) was used to evaluate neurodevelopment in children with ASD...
January 16, 2018: Nutritional Neuroscience
https://www.readbyqxmd.com/read/29336593/effect-of-vitamin-a-supplementation-on-iron-status-in-humans-a-systematic-review-and-meta-analysis
#4
Marcela de Sá Barreto da Cunha, Natália Aboudib Campos Hankins, Sandra Fernandes Arruda
Anemia is a worldwide public health problem that can be related to many causes, including vitamin A deficiency. The aim of this study was to assess and estimate the effect of vitamin A supplementation (VAS) on iron status biomarkers and anemia in humans. Six databases, including Cochrane, EMBASE, LILACS, Pubmed, Scopus and Web of Science, were searched for clinical trials and cohort studies that investigated the effect of vitamin A supplementation alone on iron status and anemia, without time-restriction. The search yielded 23 eligible studies, 21 clinical trials and 2 cohort studies, with children, teenagers, pregnant or lactating women...
January 16, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29330505/over-expression-of-a-retinol-dehydrogenase-srp35-dhrs7c-in-skeletal-muscle-activates-mtorc2-enhances-glucose-metabolism-and-muscle-performance
#5
Alexis Ruiz, Erez Dror, Christoph Handschin, Regula Furrer, Joaquin Perez-Schindler, Christoph Bachmann, Susan Treves, Francesco Zorzato
SRP-35 is a short-chain dehydrogenase/reductase belonging to the DHRS7C dehydrogenase/ reductase family 7. Here we show that its over-expression in mouse skeletal muscles induces enhanced muscle performance in vivo, which is not related to alterations in excitation-contraction coupling but rather linked to enhanced glucose metabolism. Over-expression of SRP-35 causes increased phosphorylation of AktS473, triggering plasmalemmal targeting of GLUT4 and higher glucose uptake into muscles. SRP-35 signaling involves RARα and RARγ (non-genomic effect), PI3K and mTORC2...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29330472/amyloid-deposition-in-a-mouse-model-humanized-at-the-transthyretin-and-retinol-binding-protein-4-loci
#6
Xiangshun Li, Yanyi Lyu, Jingling Shen, Yanshuang Mu, Lixia Qiang, Li Liu, Kimi Araki, Bruno P Imbimbo, Ken-Ichi Yamamura, Shoude Jin, Zhenghua Li
Familial amyloidotic polyneuropathy is an autosomal dominant disorder caused by a point mutation in the transthyretin (TTR) gene. The process of TTR amyloidogenesis begins with rate-limiting dissociation of the TTR tetramer. Thus, the TTR stabilizers, such as Tafamidis and Diflunisal, are now in clinical trials. Mouse models will be useful to testing the efficacy of these drugs. Although several mouse models have been generated, they all express mouse Rbp4. Thus, human TTR associates with mouse RBP4, resulting in different kinetic and thermodynamic stability profiles of TTR tetramers...
January 12, 2018: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29329923/different-protein-composition-of-low-calorie-diet-differently-impacts-adipokine-profile-irrespective-of-weight-loss-in-overweight-and-obese-women
#7
R Mateo-Gallego, I Lamiquiz-Moneo, S Perez-Calahorra, V Marco-Benedí, A M Bea, L Baila-Rueda, M Laclaustra, J L Peñalvo, F Civeira, A Cenarro
BACKGROUND AND AIMS: High-protein (HP) diets have shown benefits in cardiometabolic markers such as insulin or triglycerides but the responsible mechanisms are not known. We aimed to assess the effect of three energy-restricted diets with different protein contents (20%, 27%, and 35%; ∼80% coming from animal source) on plasma adipokine concentration and its association with changes in cardiometabolic markers. METHODS: Seventy-six women (BMI 32.8 ± 2.93) were randomized to one of three calorie-reduced diets, with protein, 20%, 27%, or 35%; carbohydrates, 50%, 43%, or 35%; and fat, 30%, for 3 months...
November 4, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/29321687/impact-of-biofortified-maize-consumption-on-serum-carotenoid-concentrations-in-zambian-children
#8
Amanda C Palmer, Neal E Craft, Kerry J Schulze, Maxwell Barffour, Justin Chileshe, Ward Siamusantu, Keith P West
Biofortified maize, designed as an intervention strategy to prevent vitamin A deficiency, can provide upwards of 15 μg β-carotene per g dry weight. Some varieties also have elevated concentrations of other carotenoids. We conducted a cluster randomized, controlled feeding trial in rural Zambia to test the impact of daily consumption of biofortified maize over a 6-month period on vitamin A status. Serum concentrations of retinol and carotenoids were assessed by high-performance liquid chromatography. Data on circulating carotenoids by intervention group in 679 children are reported here...
January 10, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29321172/modest-decreases-in-endogenous-all-trans-retinoic-acid-produced-by-a-mouse-rdh10-heterozygote-provoke-major-abnormalities-in-adipogenesis-and-lipid-metabolism
#9
Di Yang, Marta G Vuckovic, Carolyn P Smullin, Myeongcheol Kim, Christabel Pui-See Lo, Emily Devericks, Hong Sik Yoo, Milena Tintcheva, Yinghua Deng, Joseph L Napoli
Pharmacological dosing of all-trans-retinoic acid (atRA) controls adiposity in rodents by inhibiting adipogenesis and inducing fatty acid oxidation. Retinol dehydrogenases (Rdh) catalyze the first reaction that activate retinol into atRA. This study examined post-natal contributions of Rdh10 to atRA biosynthesis and physiological functions of endogenous atRA. Embryonic fibroblasts from Rdh10 heterozygote hypomorphs or with a total Rdh10 knockout exhibit decreased atRA biosynthesis and escalated adipogenesis...
January 10, 2018: Diabetes
https://www.readbyqxmd.com/read/29314705/effect-of-enhanced-homestead-food-production-and-aquaculture-on-dietary-intakes-of-women-and-children-in-rural-cambodia-a-cluster-randomized-controlled-trial
#10
Vashti Verbowski, Zaman Talukder, Kroeun Hou, Ly Sok Hoing, Kristina Michaux, Victoria Anderson, Rosalind Gibson, Kathy H Li, Larry D Lynd, Judy McLean, Tim J Green, Susan I Barr
The Cambodian diet is low in nutrient-dense animal-source foods. Enhanced homestead food production (EHFP) and aquaculture, which increase availability of nutrient-dense foods, are promising interventions to improve dietary intake. This study examined the effect of EHFP with or without aquaculture on dietary intake and prevalence of inadequate intake of select nutrients among women and children living in rural Cambodia, compared to controls. In a registered, cluster randomized controlled trial in Prey Veng, Cambodia, 10 households in each of 90 villages (n = 900) were randomized by village to receive EHFP, EHFP plus aquaculture, or control...
January 5, 2018: Maternal & Child Nutrition
https://www.readbyqxmd.com/read/29313750/serum-retinol-folic-acid-and-copper-are-associated-with-sperm-abnormalities-in-men-with-obesity
#11
Berniza Calderón, Vital Hevia, Belén Vega-Piñero, Antonia Martín-Hidalgo, Helena Mendez-Del Sol, Héctor F Escobar-Morreale, José I Botella-Carretero
BACKGROUND AND OBJECTIVES: Micronutrients may influence the development and differentiation of sperm cells. The aim of this study was to assess the possible association of deficiencies in several vitamins and trace elements with sperm abnormalities in men with obesity. PARTICIPANTS AND METHODS: Thirty male patients with moderate to severe obesity and ten lean controls who gave written informed consent were included. Anthropometric parameters were recorded. Hormonal and lipid profiles were analyzed, as well as serum concentrations of zinc, copper, retinol, α-tocopherol, 25-hydroxyvitamin D, cobalamin, and folic acid...
January 9, 2018: Journal of the American College of Nutrition
https://www.readbyqxmd.com/read/29311590/vitamin-a-and-e-nutritional-status-in-relation-to-leptin-adiponectin-igf-i-and-igf-ii-in-early-life-a-birth-cohort-study
#12
Qinwen Du, Zhong-Cheng Luo, Anne Monique Nuyt, Francois Audibert, Pierre Julien, Shu-Qin Wei, Dan-Li Zhang, William Fraser, Emile Levy
The metabolic health effects of vitamin A and E nutritional status in early life are largely unknown. We assessed whether vitamin A and vitamin E nutritional status may affect circulating leptin, adiponectin, insulin-like growth factor (IGF)-I and IGF-II levels in early life in humans. In a singleton birth cohort (n = 248), vitamin A and E nutritional status in fetuses/newborns were assessed by cord plasma concentrations of retinol, β-carotene, α- and γ-tocopherols. The primary outcomes were cord plasma leptin, adiponectin, IGF-I and IGF-II concentrations...
January 8, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29301374/why-differentiation-therapy-sometimes-fails-molecular-mechanisms-of-resistance-to-retinoids
#13
REVIEW
Petr Chlapek, Viera Slavikova, Pavel Mazanek, Jaroslav Sterba, Renata Veselska
Retinoids represent a popular group of differentiation inducers that are successfully used in oncology for treatment of acute promyelocytic leukemia in adults and of neuroblastoma in children. The therapeutic potential of retinoids is based on their key role in the regulation of cell differentiation, growth, and apoptosis, which provides a basis for their use both in cancer therapy and chemoprevention. Nevertheless, patients treated with retinoids often exhibit or develop resistance to this therapy. Although resistance to retinoids is commonly categorized as either acquired or intrinsic, resistance as a single phenotypic feature is usually based on the same mechanisms that are closely related or combined in both of these types...
January 3, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29298821/physiological-and-pathological-implications-of-retinoid-action-in-the-endometrium
#14
Yanwen Jiang, Lu Chen, Robert Taylor, Chunjin Li, Xu Zhou
Retinol (vitamin A) and its derivatives, collectively known as retinoids, are required for maintaining vision, immunity, barrier function, reproduction, embryogenesis, and cell proliferation and differentiation. Despite the fact that most events in the endometrium are predominantly regulated by steroid hormones (estrogens and progesterone), accumulating evidence shows that retinoid signaling is also involved in the development and maintenance of the endometrium, stromal decidualization, and blastocyst implantation...
January 3, 2018: Journal of Endocrinology
https://www.readbyqxmd.com/read/29291583/intracellular-and-extracellular-retinoid-like-activity-of-widespread-cyanobacterial-species
#15
Priebojová Jana, Hilscherová Klára, Procházková Tereza, Sychrová Eliška, Smutná Marie
Cyanobacterial species produce wide range of bioactive compounds. This study characterized production of retinoid-like compounds with embryotoxic and teratogenic potential by commonly occurring cyanobacterial species with tendency to form massive water blooms. The major goal was to simultaneously assess the intracellular and extracellular retinoid-like activity from several independent cultivations of one coccal (Microcystis aeruginosa) and four filamentous cyanobacteria (Aphanizomenon gracile, Cylindrospermopsis raciborskii, Limnothrix redekeii, and Planktothrix agardhii) and characterize the variability in its production among cultivations...
December 29, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29290976/neuron-derived-transthyretin-modulates-astrocytic-glycolysis-in-hormone-independent-manner
#16
Alina Zawiślak, Piotr Jakimowicz, James A McCubrey, Dariusz Rakus
It has been shown that neurons alter the expression of astrocytic metabolic enzymes by secretion of until now unknown molecule(s) into extracellular fluid. Here, we present evidence that neuron-derived transthyretin (TTR) stimulates expression of glycolytic enzymes in astrocytes which is reflected by an increased synthesis of ATP. The action of TTR is restricted to regulatory enzymes of glycolysis: phosphofructokinase P (PFKP) and pyruvate kinase M1/M2 isoforms (PKM1/2). The regulation of PFK and PKM expression by TTR is presumably specific for brain tissue and is independent of the role of TTR as a carrier protein for thyroxine and retinol...
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29286303/disturbed-vitamin-a-metabolism-in-non-alcoholic-fatty-liver-disease-nafld
#17
REVIEW
Ali Saeed, Robin P F Dullaart, Tim C M A Schreuder, Hans Blokzijl, Klaas Nico Faber
Vitamin A is required for important physiological processes, including embryogenesis, vision, cell proliferation and differentiation, immune regulation, and glucose and lipid metabolism. Many of vitamin A's functions are executed through retinoic acids that activate transcriptional networks controlled by retinoic acid receptors (RARs) and retinoid X receptors (RXRs).The liver plays a central role in vitamin A metabolism: (1) it produces bile supporting efficient intestinal absorption of fat-soluble nutrients like vitamin A; (2) it produces retinol binding protein 4 (RBP4) that distributes vitamin A, as retinol, to peripheral tissues; and (3) it harbors the largest body supply of vitamin A, mostly as retinyl esters, in hepatic stellate cells (HSCs)...
December 29, 2017: Nutrients
https://www.readbyqxmd.com/read/29285377/elevated-neutrophil-to-lymphocyte-ratio-is-associated-with-nutritional-impairment-immune-suppression-resistance-to-s-1-plus-cisplatin-and-poor-prognosis-in-patients-with-stage-iv-gastric-cancer
#18
Kenji Gonda, Masahiko Shibata, Yu Sato, Maria Washio, Hiroyuki Takeshita, Hirofumi Shigeta, Michikazu Ogura, Shinichi Oka, Shinich Sakuramoto
Gastric cancer continues to be a major cause of morbidity and mortality worldwide. Recently, there has been a growing interest in the host inflammatory response and there is increasing evidence that the neutrophil to lymphocyte ratio (NLR), which is a useful marker of systemic inflammation, can be an effective prognostic indicator in various types of malignant diseases. A total of 110 patients with stage IV gastric cancer who received chemotherapy of S-1 plus cisplatin were enrolled in this study. Eleven patients did not complete four cycles of the chemotherapy...
December 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29285249/retinol-dehydrogenase-10-promotes-development-and-progression-of-human-glioma-via-the-tweak-nf-%C3%AE%C2%BAb-axis
#19
Feng Guan, Liang Wang, Shuyu Hao, Zhen Wu, Jian Bai, Zhuang Kang, Quan Zhou, Hong Chang, Hui Yin, Da Li, Kaibin Tian, Junpeng Ma, Guijun Zhang, Junting Zhang
Retinol dehydrogenase-10 (RDH10) is a member of the short-chain dehydrogenase/reductase family, which plays an important role in retinoic acid (RA) synthesis. Here, we show that RDH10 is highly expressed in human gliomas, and its expression correlates with tumor grade and patient survival times. In vitro, lentivirus-mediated shRNA knockdown of RDH10 suppressed glioma cell proliferation, survival, and invasiveness and cell cycle progression. In vivo, RDH10 knockdown reduced glioma growth in nude mice. Microarray analysis revealed that RDH10 silencing reduces expression of TNFRSF12A (Fn14), TNFSF12 (TWEAK), TRAF3, IKBKB (IKK-β), and BMPR2, while it increases expression of TRAF1, NFKBIA (IκBα), NFKBIE (IκBε), and TNFAIP3...
December 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/29282841/differences-in-food-and-nutrient-intakes-between-australian-and-asian-born-women-living-in-australia-results-from-the-australian-longitudinal-study-on-women-s-health
#20
Huaqing Liu, John J Hall, Xiaoyue Xu, Gita D Mishra, Julie E Byles
AIM: To determine differences in food and nutrient intakes between Australian- and Asian-born women living in Australia. METHODS: Data were obtained from the Australian Longitudinal Study on Women's Health, including 6461 women born in Australia or Asia who completed food frequency questionnaires in 2001 and 2013. Diet was assessed using the Dietary Questionnaire for Epidemiological Studies version 2. Longitudinal generalised estimating-equation modelling was performed to determine the effect of country of birth and survey year on fruit and vegetable intake...
December 27, 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
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