** Shares of Tenax Therapeutics TENX.O soar 172% to $4.60
premarket
** Says co granted U.S. patent, covering use of its
experimental intravenous drug, levosimendan, for the treatment
of pulmonary hypertension associated with a type of heart
failure
** Patent expected to last until 2040 - TENX
** There are currently no FDA approved treatments for
pulmonary hypertension with heart failure and preserved ejection
fraction, co adds
** Up to Wednesday's close, stock fell 89% in past 12 months
(Reporting by Leroy Leo in Bengaluru)
((Leroy.Dsouza@thomsonreuters.com ; Twitter: https://twitter.com/LeroyLeo7;))