Correlation between RBC astaxanthin and Aβ40 (A) or Aβ42 (B) concentrations after 12 weeks administration of astaxanthin (N = 30).

<p>X-axis is the concentration of RBC Aβ. Y-axis is concentration of RBC astaxanthin that had been measured in our former human study <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0049620#pone.0049620-Nakagawa3" target="_blank">[12]</a>.</p

Correlation between RBC PLOOH and Aβ40 (A) or Aβ42 (B) concentration after 12 weeks administration of astaxanthin (N = 30).

<p>X-axis is concentration of RBC Aβ. Y-axis is concentration of RBC PLOOH [phosphatidylcholine hydroperoxide (PCOOH) and phosphatidylethanolamine hydroperoxide (PEOOH)] that had been measured in our former human study <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0049620#pone.0049620-Nakagawa3" target="_blank">[12]</a>.</p

Changes in Amyloid β levels in RBC and plasma before and after a 12 week administration of 0, 6 or 12 mg astaxanthin.

<p>Means ± SE are shown.</p><p>Significantly different between before and after astaxanthin administration: *<i>P</i><0.05.</p><p>Blood samples (RBC and plasma) that had been obtained from our former human study <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0049620#pone.0049620-Nakagawa3" target="_blank">[12]</a> were subjected to Aβ determination.</p