“…The present experimental animal study is based on two crucial points: the respective results from the literature on the efficiency of anticholinergics on depression [ 153 , 154 , 155 , 156 , 157 , 158 , 159 ] including the results that BoNT-A is effective for the treatment of patients with major depression if injected into the brow muscles [ 258 , 259 , 260 , 261 , 262 , 263 , 264 , 265 , 266 ] and our own previous findings that bilaterally injected intrastriatal BoNT-A reduced anxiety in naïve Wistar rats [ 117 ]. To avoid unwanted side effects of systematically applied classical anticholinergic drugs, and hypothesizing that BoNT-A inhibits the release of ACh also as a local anticholinergic drug, we injected BoNT-A directly into the CPu in hemi-PD rats [ 109 , 110 , 112 , 113 , 114 , 116 , 117 , 118 , 120 ].…”