生物活性 | |||
---|---|---|---|
描述 | Guanfacine hydrochloride, an anti-hypertensive agent. Extended-release guanfacine appears to be safe and effective for reducing hyperactivity, impulsiveness, and distractibility in children with ASD (autism spectrum disorder)[3]. Guanfacine lowers blood pressure by activating CNS alpha adrenoreceptors, which results in sympathetic outflow leading to reduced vascular tone. Guanfacine is rapidly and completely absorbed from the gastrointestinal tract and apparently undergoes extensive distribution to all tissues. Guanfacine's adverse reactions include dry mouth, sedation, and constipation. Adverse effects and reaction to sudden withdrawal of the drug may be less severe with guanfacine than with clonidine[4]. Guanfacine extended release (ER), as a new option to the treatment of attention deficit hyperactivity disorder, which acts at postsynaptic level. Guanfacine stimulates postsynaptic alfa-2A adrenergic receptors so it inhibits the production of cAMP and closes HCN channels enhancing the effectiveness of the signal of the pyramidal neurons of the prefrontal cortex, thus improving working memory and attention[5]. |
临床研究 | |||||
---|---|---|---|---|---|
NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT02204410 | Attention Deficit Hyperactivit... 展开 >>y Disorder Deficient Emotional Self-Regulation 收起 << | Phase 4 | Completed | - | United States, Massachusetts ... 展开 >> Massachusetts General Hospital Boston, Massachusetts, United States, 02114 收起 << |
NCT01172288 | Tourettes Syndrome ... 展开 >> Tic 收起 << | Phase 2 | Completed | - | United States, Connecticut ... 展开 >> Yale Child Study Center New Haven, Connecticut, United States, 06520 收起 << |
NCT00684489 | Hypertension | Not Applicable | Completed | - | - |
实验方案 | |||
---|---|---|---|
1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
3.54mL 0.71mL 0.35mL |
17.70mL 3.54mL 1.77mL |
35.39mL 7.08mL 3.54mL |
参考文献 |
---|