Gregory of Nyssa and Transubstantiation

Q. Did Gregory advocate the Roman dogma of transubstantiation?

Gregory, Bishop of Nyssa (c. 335-395 A.D.):

For this holy altar, too, by which I stand, is stone, ordinary in its nature, nowise different from the other slabs of stone that build our houses and adorn our pavements; but seeing that it was consecrated to the service of God, and received the benediction, it is a holy table, an altar undefiled, no longer touched by the hands of all, but of the priests alone, and that with reverence. The bread again is at first common bread, but when the sacramental action consecrates it, it is called, and becomes, the Body of Christ. So with the sacramental oil; so with the wine: though before the benediction they are of little value, each of them, after the sanctification bestowed by the Spirit, has its several operation. The same power of the word, again, also makes the priest venerable and honourable, separated, by the new blessing bestowed upon him, from his community with the mass of men. While but yesterday he was one of the mass, one of the people, he is suddenly rendered a guide, a president, a teacher of righteousness, an instructor in hidden mysteries; and this he does without being at all changed in body or in form; but, while continuing to be in all appearance the man he was before, being, by some unseen power and grace, transformed in respect of his unseen soul to the higher condition. (Philip Schaff, NPNF2, Vol. V, Oratorical Works., On the Baptism of Christ). Here

~ Soli Deo Gloria