died on Jan. 16 at age 58, due to complications from sudden cardiac arrest, his rep told The Post.“Beverly Hills, 90210” ran for 10 seasons on Fox, from 1990 to 2000, following a group of friends through high school, college, and life in the titular neighborhood. Doherty, 52, starred as Brenda Walsh, who moves to the area with her brother Brandon (Jason Priestley) and tries to fit in.