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Suture Dermalon 5/0 19 MM

Company: COVIDIEN
Catalog#: 1756-21
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Murine Pancreatic Islets Transplantation under the Kidney Capsule
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Date:
2018-03-05
[Abstract]  Type 1 diabetes (T1D) is an autoimmune disease caused by the lack of insulin-producing pancreatic beta cells leading to systemic hyperglycemia. Pancreatic islet transplantation is a valid therapeutic approach to restore insulin loss and to promote adequate glycemic control. Pancreatic islet transplantation in mice is an optimal preclinical model to identify new therapeutic strategies aiming at preventing rejection and optimizing post-transplant immuno-suppressive/-tolerogenic therapies.

Islet transplantation in preclinical animal models can be performed in different sites such the kidney capsule, spleen, bone marrow and pancreas. This protocol describes murine islet transplantation under the kidney capsule. This is a widely accepted procedure for research purposes. Stress ...
[摘要]  1型糖尿病(T1D)是由于缺乏产生胰岛素的胰腺β细胞导致系统性高血糖症而引起的自身免疫性疾病。 胰岛移植是恢复胰岛素损失和促进充分血糖控制的有效治疗方法。 小鼠胰岛移植是一种最佳的临床前模型,用于鉴定旨在预防排斥和优化移植后免疫抑制/抗原治疗的新治疗策略。

临床前动物模型中的胰岛移植可以在不同部位进行,如肾囊,脾脏,骨髓和胰腺。 该协议描述了肾囊下的鼠胰岛移植。 这是一个被广泛接受的研究目的。 动物造成的压力很小,并导致可靠和可重复的结果。

【背景】迄今为止在小动物模型中报道了许多用于胰岛植入的备选位置,并且必须根据要使用的程序的技术优势和实验目的来选择理想的位点。 考虑到肾囊是一种血管外部位,并且它没有免疫保护,肾囊下的胰岛移植仍然是一种低死亡率的手术过程,导致几天内高血糖症逆转。 另外,肾囊下的移植允许组织学研究和胰岛功能的正式证明(Cantarelli和Piemonti,2011; Elisa Cantarelli等人,2013)。

Mechanical Allodynia Assessment in a Murine Neuropathic Pain Model
Author:
Date:
2018-01-20
[Abstract]  Experimental animal models are unique tools (i) to study pain transmission and pathophysiology of neuropathic pain, (ii) to identify novel molecular targets and (iii) to test the potential analgesic effect of specific molecules. The chronic constriction injury (CCI) model of neuropathic pain is the first model of post-traumatic painful peripheral neuropathy, originally developed by Bennett and Xie in the late 1980s. The chronic constriction is performed in the sciatic nerve and induces a partial denervation involving myelinated afferent axons and unmyelinated axons. Damage to unmyelinated axons is much more severe than myelinated afferents. As the model induces a partial denervation, it is very useful for the analysis of pain behaviours. Stimulation of the hind paw, a target of the ... [摘要]  实验动物模型是独特的工具:(i)研究神经性疼痛的疼痛传递和病理生理学,(ii)鉴定新的分子靶标和(iii)测试特定分子的潜在镇痛作用。神经性疼痛的慢性缩窄性损伤(CCI)模型是最初由Bennett和Xie在二十世纪八十年代后期开发的创伤后疼痛性周围神经病的第一个模型。慢性收缩是在坐骨神经中进行的,并诱导部分去神经支配,包括有髓鞘的传入轴突和无髓鞘轴突。对无髓鞘轴突的损伤比有髓神经传入者严重得多。由于该模型导致部分去神经支配,对疼痛行为的分析非常有用。刺激后爪(坐骨神经的靶标)引起可被定量的疼痛。因此,通常通过测量对von Frey丝刺激的后爪缩回反应,在坐骨神经的CCI后7,14和21天评估机械异常性疼痛。在这里,我们详细描述协议允许在小鼠中可靠和可重复的CCI模型。总的来说,研究人员最常使用这种手术模式来发现更有效的慢性疼痛状态的药物控制药物。

【背景】Bennett和Xie(1988)首先提出了神经性疼痛的慢性缩窄性损伤(CCI)模型。慢性缩窄应用于模拟创伤后疼痛性周围神经病的坐骨神经。该模型诱导了部分去神经支配,因此对定量分析疼痛行为和评价新药的镇痛效果非常有用。坐骨神经的CCI在异氟烷麻醉下进行(诱导5%,维持2%)。通过解剖将股二头肌和股浅筋膜分开以暴露坐骨神经。通过在坐骨神经周围松散地结扎一根结扎物来诱导CCI,以保持神经外循环。
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