The state health department is cutting off $600,000 in federal funding to a Houston affiliate of Planned Parenthood for a nearly three-decade-old H.I.V. prevention program, officials said on Wednesday. Chris Van Deusen, a department spokesman, said the services “will be provided by local health departments in the area.” Republican leaders have intensified efforts to cut funding for Planned Parenthood after an anti-abortion group released videos it said showed officials of the reproductive health agency negotiating prices for fetal tissues from abortions it performs. Planned Parenthood has said the videos were heavily edited and denied profiting from fetal tissue donation.