» Articles » PMID: 27534819

Vitamin A Supplementation Transiently Increases Retinol Concentrations in Extrahepatic Organs of Neonatal Rats Raised Under Vitamin A-Marginal Conditions

Overview
Journal J Nutr
Publisher Elsevier
Date 2016 Aug 19
PMID 27534819
Citations 6
Authors
Affiliations
Soon will be listed here.
Abstract

Background: Vitamin A (VA; retinol) supplementation is recommended for children aged >6 mo in countries with high rates of malnutrition, but the distribution and retention of VA in body tissues have not been extensively explored.

Objective: We sought to determine the distribution and retention of VA in tissues of neonatal rats raised under VA-marginal conditions.

Methods: Sprague-Dawley neonatal rats (n = 104; 63 males) nursed by mothers fed a VA-marginal diet (0.35 mg retinol equivalents/kg diet) were randomized and treated on postnatal day 4 with an oral dose of either VA (6 μg retinyl palmitate/g body weight) or canola oil as control. Pups (n = 4/group) were killed at 13 time points from 30 min to 24 d after dose administration. The total retinol concentration and mass were determined in all collected organs.

Results: In the control group, plasma VA was marginal (0.8 μmol/L), whereas liver VA was deficient (<70 nmol/g). Nonetheless, the liver contained most (∼76%) of the total VA mass in the body, whereas extrahepatic nondigestive organs together contained ∼13%. White adipose tissue (WAT), which was nearly absent before postnatal day 12, contained only ∼1%. In VA-supplemented neonates, the mean total retinol concentrations in all organs were significantly greater than in control pups. However, this increase lasted for only ∼1 d in most extrahepatic tissues, with the exception of WAT, in which it lasted 18 d.

Conclusions: Extrahepatic organs in neonatal rats raised under VA-marginal conditions store relatively little VA, and the scarcity of adipose tissue may predispose neonates to a low-VA status. The effect of VA supplementation on VA content in most extrahepatic organs is transient. A more frequent supplementation along with other nutritional interventions may be necessary for maintaining a steady supply of retinol to the rapidly developing extrahepatic organs.

Citing Articles

RNAseq studies reveal distinct transcriptional response to vitamin A deficiency in small intestine versus colon, uncovering novel vitamin A-regulated genes.

Chai Z, Lyu Y, Chen Q, Wei C, Snyder L, Weaver V J Nutr Biochem. 2021; 98:108814.

PMID: 34242724 PMC: 8908335. DOI: 10.1016/j.jnutbio.2021.108814.


Metabolism of Neonatal Vitamin A Supplementation: A Systematic Review.

Gannon B, Rogers L, Tanumihardjo S Adv Nutr. 2020; 12(3):942-958.

PMID: 33216111 PMC: 8262574. DOI: 10.1093/advances/nmaa137.


Retinoic Acid Mediated Clearance of in Vitamin A Deficient Mice Requires CD11b+ and T Cells.

Snyder L, McDaniel K, Tian Y, Wei C, Kennett M, Patterson A Front Immunol. 2019; 9:3090.

PMID: 30671060 PMC: 6331472. DOI: 10.3389/fimmu.2018.03090.


Vitamin A and retinoic acid combined have a more potent effect compared to vitamin A alone on the uptake of retinol into extrahepatic tissues of neonatal rats raised under vitamin A-marginal conditions.

Hodges J, Tan L, Green M, Ross A Curr Dev Nutr. 2018; 1(12).

PMID: 29377015 PMC: 5779100. DOI: 10.3945/cdn.116.000265.


Single High-Dose Vitamin A Supplementation to Neonatal Piglets Results in a Transient Dose Response in Extrahepatic Organs and Sustained Increases in Liver Stores.

Gannon B, Davis C, Nair N, Grahn M, Tanumihardjo S J Nutr. 2017; 147(5):798-806.

PMID: 28381532 PMC: 6584120. DOI: 10.3945/jn.117.247577.


References
1.
Bhutta Z, Ahmed T, Black R, Cousens S, Dewey K, Giugliani E . What works? Interventions for maternal and child undernutrition and survival. Lancet. 2008; 371(9610):417-40. DOI: 10.1016/S0140-6736(07)61693-6. View

2.
Riabroy N, Tanumihardjo S . Oral doses of α-retinyl ester track chylomicron uptake and distribution of vitamin A in a male piglet model for newborn infants. J Nutr. 2014; 144(8):1188-95. DOI: 10.3945/jn.114.191668. View

3.
Ross A, Ambalavanan N, Zolfaghari R, Li N . Vitamin A combined with retinoic acid increases retinol uptake and lung retinyl ester formation in a synergistic manner in neonatal rats. J Lipid Res. 2006; 47(8):1844-51. DOI: 10.1194/jlr.M600061-JLR200. View

4.
Wronska A, Sledzinski T, Goyke E, Lawniczak A, Wierzbicki P, Kmiec Z . Short-term calorie restriction and refeeding differently affect lipogenic enzymes in major white adipose tissue depots of young and old rats. J Physiol Pharmacol. 2014; 65(1):117-26. View

5.
Ross A . Separation and quantitation of retinyl esters and retinol by high-performance liquid chromatography. Methods Enzymol. 1986; 123:68-74. DOI: 10.1016/s0076-6879(86)23010-4. View