  The study reported here concerns a phenomenon, discovered and extensively
investigated by Sorin Comorosan, wherein enzyme initial reaction rates are
enhanced as a consequence of incorporation of solutions derived from previously
irradiated crystalline material into the reaction medium. Effective irradiation
times conform to a sharply oscillatory pattern. In most reports, the irradiated
crystalline material has been the substrate for the enzyme reaction to be
studied, but there have been exceptions. The experiments presented here serve
to confirm and extend this latter aspect of the phenomenon. It is found that
the initial reaction rates for the lactic acid dehydrogenase (LDH) conversion
of pyruvate to lactate can be stimulated by irradiation of crystalline deposits
of sodium chloride, sodium bromide, potassium chloride and diatomaceous earth.
Similarly, stimulation of the LDH conversion of lactate to pyruvate is
demonstrated for irradiated sodium chloride. There appears to be no required
chemical feature of the irradiated material other than crystalline state.
