{"id":51126,"date":"2005-02-01T00:00:00","date_gmt":"2018-12-04T04:32:41","guid":{"rendered":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/recovery-from-impaired-dark-adaptation-in-nightblind-pregnant\/"},"modified":"2018-12-04T05:32:41","modified_gmt":"2018-12-04T04:32:41","slug":"recovery-from-impaired-dark-adaptation-in-nightblind-pregnant","status":"publish","type":"resume","link":"https:\/\/aprifel-pp.mentalworks.biz\/fr\/resume-scientifique\/recovery-from-impaired-dark-adaptation-in-nightblind-pregnant\/","title":{"rendered":"Recovery from impaired dark adaptation in nightblind pregnant nepali women who receive small daily doses of vitamin a as amaranth leaves, carrots, goat liver, vitamin a-fortified rice, or retinyl palmitate."},"content":{"rendered":"<p>BACKGROUND: It is not known whether daily consumption of vitamin A-containing foods is efficacious for treating nightblindness. OBJECTIVE: We assessed the effect of supplementation with vitamin A from food or synthetic sources on dark adaptation and plasma retinol concentrations in nightblind pregnant Nepali women. DESIGN: Nightblind pregnant women were randomly assigned to 1 of 6 treatment groups to receive 6 d\/wk for 6 wk either 850 microg retinol equivalents\/d as retinyl palmitate, vitamin A-fortified rice, goat liver, amaranth leaves, or carrots or 2000 microg retinol equivalents\/d as retinyl palmitate. Dark adaptation was assessed weekly by using the pupillary threshold (PT) test; plasma retinol concentrations were measured before and after the intervention. These outcomes were also assessed in a comparison group of nonnightblind pregnant women. RESULTS: In the nightblind women, the mean PT improved significantly (P&lt;0.0001) from -0.71+\/-0.04 to -1.42+\/-0.02 log cd\/m2, and the final mean PT did not differ significantly from that in the nonnightblind women (-1.43+\/-0.04; P=0.55). Improvement in dark adaptation was greater in the liver group than in the vitamin A-fortified rice group (P&lt;0.02). Plasma retinol concentrations increased significantly (P&lt;0.0001) from 0.95+\/-0.05 to 1.07+\/-0.05 micromol\/L. The plasma retinol response was greater in the higher-dose capsule and liver groups than in the vegetable groups and significantly greater in the liver group than in the vitamin A-fortified rice group (both: P&lt;0.05). CONCLUSION: Improvement in dark adaptation did not differ significantly between women who received vitamin A as liver, amaranth leaves, carrots, or retinyl palmitate.<\/p>\n<p>Publication Types:<br \/>\nClinical Trial<br \/>\nRandomized Controlled Trial <\/p>\n","protected":false},"template":"","mots_cles":[],"class_list":["post-51126","resume","type-resume","status-publish","hentry"],"acf":{"auteurs":null,"adresse":null,"numero":null,"page":null,"mois":null,"annee":null,"mots-cles":null,"sources":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.6 (Yoast SEO v23.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Recovery from impaired dark adaptation in nightblind pregnant nepali women who receive small daily doses of vitamin a as amaranth leaves, carrots, goat liver, vitamin a-fortified rice, or retinyl palmitate. - Aprifel<\/title>\n<meta name=\"description\" content=\"Recovery from impaired dark adaptation in nightblind pregnant nepali women who receive small daily doses of vitamin a as amaranth leaves, carrots, goat liver, vitamin a-fortified rice, or retinyl palmitate. - 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