Research is a plus for any medical school, whether they are research-heavy or not. As for DO adcoms, I was only asked about my research at one school that happened to be impressed with my first-author publication and my role in clinical studies. Unfortunately, the school is not too involved with research. The other DO school that I interviewed at is more involved with research, but didn't ask about it at all. I brought it up anyway just to make a point of it and to cover all bases (my uGPA wasn't stellar).
So if I were you, I would definitely consider your research to be an important aspect of your application and one in which you should feel proud to discuss. I also think it makes you well-rounded. As evidenced by the fact that applicants often have non-medical volunteer work/activities, not everything has to be medically relevant.
Good luck! Don't forget to "sell yourself" during your interviews. Be proud, not cocky!!