(Corrects spelling of guest’s name in panel.) Tatsuya Mizuno, a director at Mizuno Credit Advisory in Tokyo, talks about the outlook for Toyota Motor Corp.'s credit rating.   Toyota and its affiliates had their senior unsecured long-term ratings cut to Aa3 from Aa2 by Moody’s Investors Service on concern that it will take time for the company to recover its previous strong profitability. The company remains on review for possible downgrade, Moody’s said yesterday in a statement. Mizuno speaks with Susan Li on Bloomberg Television's "First Up."