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Intramuscular Injection of BOTOX® Boosts Learning and Memory in Adult Mice in Association with Enriched Circulation of Platelets and Enhanced Density of Pyramidal Neurons in the Hippocampus.
Neurochemical Research ( IF 4.4 ) Pub Date : 2020-09-24 , DOI: 10.1007/s11064-020-03133-9
Ajisha Yesudhas 1 , Syed Aasish Roshan 2 , Risna Kanjirassery Radhakrishnan 1 , G P Poornimai Abirami 1 , Nivethitha Manickam 1 , Kaviya Selvaraj 1 , Gokul Elumalai 1 , Sellathamby Shanmugaapriya 3 , Muthuswamy Anusuyadevi 2 , Mahesh Kandasamy 1, 4
Affiliation  

BOTOX® is a therapeutic form of botulinum neurotoxin. It acts by blocking the release of acetylcholine (ACh) from the synaptic vesicles at the neuromuscular junctions, thereby inhibiting the muscle contraction. Notably, many neurological diseases have been characterized by movement disorders in association with abnormal levels of ACh. Thus, blockade of aberrant release of ACh appears to be a potential therapeutic strategy to mitigate many neurological deficits. BOTOX® has widely been used to manage a number of clinical complications like neuromuscular disorders, migraine and neuropathic pain. While the beneficial effects of BOTOX® against movement disorders have extensively been studied, its possible role in the outcome of cognitive function remains to be determined. Therefore, we investigated the effect of BOTOX® on learning and memory in experimental adult mice using behavioural paradigms such as open field task, Morris water maze and novel object recognition test in correlation with haematological parameters and histological assessments of the brain. Results revealed that a mild dose of BOTOX® treatment via an intramuscular route in adult animals improves learning and memory in association with increased number of circulating platelets and enhanced structural plasticity in the hippocampus. In the future, this minimally invasive treatment could be implemented to ameliorate different forms of dementia resulting from abnormal ageing and various neurocognitive disorders including Alzheimer’s disease (AD).



中文翻译:

肌肉内注射BOTOX®可以增强成年小鼠的学习和记忆力,并与丰富的血小板循环和海马锥体神经元密度增强有关。

BOTOX®是肉毒杆菌神经毒素的治疗形式。它通过阻止乙酰胆碱(ACh)从神经肌肉连接处的突触小泡释放而发挥作用,从而抑制肌肉收缩。值得注意的是,许多神经系统疾病的特征在于运动异常与ACh水平异常相关。因此,阻断ACh的异常释放似乎是减轻许多神经功能缺损的潜在治疗策略。BOTOX®已被广泛用于处理许多临床并发症,例如神经肌肉疾病,偏头痛和神经性疼痛。尽管已经广泛研究了BOTOX®对运动障碍的有益作用,但其在认知功能结果中的可能作用仍有待确定。因此,我们使用行为范例(例如,野外任务,莫里斯水迷宫和新型物体识别测试)与血液学参数和大脑的组织学评估相关联,研究了BOTOX®对实验成年小鼠学习和记忆的影响。结果显示,成年动物通过肌肉内途径进行的适度BOTOX®治疗可改善学习和记忆,并增加循环血小板的数量并增强海马的结构可塑性。将来,可以实施这种微创治疗来缓解因异常衰老和包括阿尔茨海默氏病(AD)在内的各种神经认知障碍导致的各种形式的痴呆。莫里斯水迷宫和新颖的物体识别测试与血液学参数和大脑的组织学评估相关。结果显示,成年动物通过肌肉内途径进行的适度BOTOX®治疗可改善学习和记忆,并增加循环血小板的数量并增强海马的结构可塑性。将来,可以实施这种微创治疗来缓解因异常衰老和包括阿尔茨海默氏病(AD)在内的各种神经认知障碍导致的各种形式的痴呆。莫里斯水迷宫和新颖的物体识别测试与血液学参数和大脑的组织学评估相关。结果显示,成年动物通过肌肉内途径进行的适度BOTOX®治疗可改善学习和记忆,并增加循环血小板的数量并增强海马的结构可塑性。将来,可以实施这种微创治疗来缓解因异常衰老和包括阿尔茨海默氏病(AD)在内的各种神经认知障碍导致的各种形式的痴呆。结果显示,成年动物通过肌肉内途径进行的适度BOTOX®治疗可改善学习和记忆,并增加循环血小板的数量并增强海马的结构可塑性。将来,可以实施这种微创治疗来缓解因异常衰老和包括阿尔茨海默氏病(AD)在内的各种神经认知障碍导致的各种形式的痴呆。结果显示,成年动物通过肌肉内途径进行的适度BOTOX®治疗可改善学习和记忆,并增加循环血小板的数量并增强海马的结构可塑性。将来,可以实施这种微创治疗来缓解因异常衰老和包括阿尔茨海默氏病(AD)在内的各种神经认知障碍导致的各种形式的痴呆。

更新日期:2020-11-25
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