Abstract:
PURPOSE:To compare changes in macular pigment optical density (MPOD) and serum lutein concentration between free lutein and lutein esters supplements in healthy Japanese individuals. METHODS:Twenty healthy subjects (age range, 22-47 years) were recruited into this prospective, randomized, doubled-blind comparative study. Individuals were evenly divided into two groups: free lutein group, supplementation with 10 mg of free lutein; or lutein esters group, supplementation with 20 mg of lutein esters equivalent to 10 mg of free lutein. Each participant took either type of oral lutein daily for 3 months. The serum lutein concentrations and MPOD levels were measured at baseline and 3 and 6 months after the start of supplementation. RESULTS:There were no significant differences in the serum lutein concentrations and MPOD levels at baseline between the groups. The increased serum lutein concentration and MPOD levels at 3 months were respectively, 89% and 38% in the free lutein group and 97% and 17% in the lutein esters group. The serum lutein concentrations in both groups and MPOD levels in the free lutein group increased significantly (p < 0.05) from baseline. No significant differences in serum lutein concentrations and MPOD levels were seen between the groups. Three months after supplementation ended, the serum lutein concentration decreased; the MPOD remained elevated in both groups. CONCLUSIONS:The serum lutein concentrations and MPOD levels increased significantly with either free lutein or lutein esters, and no significant differences were found between the two. Both were considered useful as lutein supplements.
journal_name
Acta Ophthalmoljournal_title
Acta ophthalmologicaauthors
Yoshizako H,Hara K,Takai Y,Kaidzu S,Obana A,Ohira Adoi
10.1111/aos.13106subject
Has Abstractpub_date
2016-09-01 00:00:00pages
e411-6issue
6eissn
1755-375Xissn
1755-3768journal_volume
94pub_type
杂志文章,随机对照试验abstract:PURPOSE:To investigate the prevalence of potential age-related eye conditions in elderly who are assisted by home healthcare nurses. The number of referrals to the general practitioner (GP), feasibility of screening and associations between vision loss and health outcomes were also studied. METHODS:Cross-sectional stu...
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