TORONTO, June 12, 2025 (GLOBE NEWSWIRE) -- DiagnaMed Holdings Corp. ("”DiagnaMed” or “DMED") (CSE: DMED) (OTCQB: DGNMF), a Canadian technology innovator specializing in advanced hydrogen extraction technologies, today announced the appointment of John Karagiannidis as President and Chief Executive Officer, succeeding Fabio Chianelli, who is stepping down from his executive positions but will remain actively involved as a member of the Board of Directors. Mr. Karagiannidis In his continued role as President ...