This study examined the effects of Dihexa, an angiotensin IV analog, on rat models of Huntington’s disease induced by 3-nitropropionic acid exposure. Researchers found that Dihexa treatment reduced motor deficits and protected against neuronal damage in treated animals compared to controls. **Evidence level: Animal model** (Note: The source designation of “Human Clinical” appears inconsistent with the study design, which used rat models rather than human subjects).