{{'Search' | translate}}
 

Leica DMI6000 B inverted microscope

全自动反转研究显微镜生物医学研究

Company: Leica Microsystems
Catalog#: Leica DMI6000 B
Bio-protocol()
Company-protocol()
Other protocol()

Drosophila Endurance Training and Assessment of Its Effects on Systemic Adaptations
Author:
Date:
2018-10-05
[Abstract]  Exercise induces beneficial systemic adaptations that reduce the incidence of age-related diseases. However, the molecular pathways that elicit these adaptations are not well understood. Understanding the molecular mechanisms that underlie the exercise response can lead to widely beneficial therapies. Large populations, relatively short lifespan, and easily modifiable genetics make Drosophila a well-suited model system for complex, longitudinal studies. We have developed an enforced climbing apparatus for Drosophila, known as the Power Tower, for the study of systemic exercise adaptations. The Power Tower takes advantage of the fly’s natural instinct for negative geotaxis, an innate behavior to run upwards after being tapped to the bottom of their vial. Flies will ... [摘要]  运动诱导有益的系统适应,减少与年龄有关的疾病的发生率。然而,引起这些适应的分子途径还不是很清楚。了解作为运动反应基础的分子机制可以产生广泛有益的疗法。大群体,相对较短的寿命和易于修改的遗传学使得 Drosophila 成为复杂纵向研究的一个非常适合的模型系统。我们开发了一种用于 Drosophila 的强制攀爬装置,称为Power Tower,用于研究系统性运动适应性。 Power Tower利用苍蝇的天然本能来消极地质,这是一种天生的行为,在被轻敲到他们的小瓶底部之后向上运行。苍蝇将持续运行至耗尽点或直至机器关闭,以先到者为准。运动3周后,雄性 Drosophila 适应训练,具有许多类似于哺乳动物模型和人类所见的保守,易于量化的生理改善。在这里,我们描述了一个有用的耐力训练协议和一套有效量化训练效果的训练后评估。
【背景】耐力运动可以降低几乎所有与年龄相关的疾病(Ciolac,2013)。耐力训练对心血管功能,能量代谢和活动有很强的作用,从苍蝇到人类都是高度保守的(Piazza et al。,2009; Booth et al。,2015 ; Wilson et al。,2015)。更好地理解运动的遗传介质可能会导致治疗方法,这些治疗方法可以使因疾病或受伤而无法运动的个体受益。 Drosophila ...

Induction of Photothrombotic Stroke in the Sensorimotor Cortex of Rats and Preparation of Tissue for Analysis of Stroke Volume and Topographical Cortical Localization of Ischemic Infarct
Author:
Date:
2018-05-20
[Abstract]  The photothrombotic model of stroke is commonly used in research as it allows the ischemic infarct to be targeted to specific regions of the cortex with high reproducibility and well-defined infarct borders. Unlike other models of stroke, photothrombosis allows the precise size and location of infarct to be tightly controlled with minimal surgical invasion. Photothrombosis is induced when a circulating photosensitive dye is irradiated in vivo, resulting in focal disruption of the endothelium, activation of platelets and occlusion of the microvasculature (Watson et al., 1985; Dietrich et al., 1987; Carmichael, 2005). The protocols here define how photothrombosis can be specifically targeted to the sensorimotor forelimb cortex of rat with high reproducibility. ... [摘要]  中风的光血栓形成模型通常用于研究,因为它允许缺血性梗塞针对特定区域的皮层,具有高重现性和明确的梗塞边界。 与其他卒中模型不同,光血栓形成能够以最小的手术入侵严密控制梗死的精确大小和位置。 当在体内辐射循环的光敏染料时诱导光血栓形成,导致内皮的局灶性破坏,血小板的活化和微血管的闭塞(Watson等人,1985年 ; Dietrich等人,1987; Carmichael,2005)。 这里的方案定义了如何将光致血栓形成特异性地靶向大鼠的感觉运动前肢皮层并具有高重现性。 提供了大鼠皮质组织处理的详细方法以允许精确分析脑卒中体积和立体定向确定缺血性损伤的精确皮层区域。

【背景】中风的光血栓形成模型允许在皮层的特定区域中精确布置缺血性梗塞(Carmichael,2005; Underly and Shih,2017)。光血栓形成可用于封闭皮层中的特定动脉和动脉分支(Carmichael et al。,2005),pia的个别血管(Taylor和Shih,2013),并定义了皮质区域如桶(Dietrich等人,1987)和后肢躯体感觉皮层(Que等人,1999)。使用这种方法,在许多实验动物模型中已经产生了高度可重现的缺血性梗塞,包括啮齿动物(Watson等人,1985; Carmichael等人,2005)和非人类动物模型人灵长类动物(Ikeda et ...

In vivo Use of Dextran-based Anterograde Cortical Tracers to Assess the Integrity of the Cortical Spinal Tract
Author:
Date:
2018-05-20
[Abstract]  When injected into the motor cortex of rats, anterograde tracers label fibers of the associated descending corticospinal tract (CST) that originate from pyramidal neurons in the tracer-injected cortex. These fibers can be assessed at the level of the spinal cord to determine the integrity of the descending CST and the spatial distribution of axons in the spinal grey matter. Here we provide detailed methods on the minimally invasive stereotaxic injection of anterograde tracers into the forelimb sensorimotor representation in the rat cortex. In addition, we detail the fixing and processing of spinal tissue for assessment of CST integrity and branching into spinal grey matter. [摘要]  当注射到大鼠运动皮层时,顺行示踪剂标记伴随着皮质脊髓束下行(CST)的起源于示踪剂注射皮层中的锥体神经元的纤维。 这些纤维可以在脊髓水平进行评估以确定下降的CST的完整性和脊髓灰质中轴突的空间分布。 在这里,我们提供了在大鼠皮层前肢感觉运动表征的微创立体定向注射顺行示踪剂的详细方法。 此外,我们详细介绍了脊柱组织的固定和加工,以评估CST的完整性和分支到脊髓灰质。

【背景】运动皮层含有上运动神经元,其产生形成CST的下行轴突并终止于脊髓。注入大鼠运动皮层的顺行示踪剂标记这些CST的降纤维,允许其在脊髓水平进行评估(图1)。在啮齿动物模型中,CST的顺行标记广泛用于评估一系列脊髓损伤模型(包括损伤)中的CST完整性(Thallmair等人,1998; Vavrek等人, 2006)和挫伤(Hill等人,2001)。此外,顺行皮质示踪剂已被用于评估不同模型的脑损伤例如皮质卒中中的遗留纤维和CST的可塑性(Wahl等人,2014; Wiersma等人, ...

Comments