Name: trans-tympanic drug delivery for the treatment of ototoxicity
Uploaded: 2018-03-16T12:30:00
Description: Watch this Scientific Journal Video about Trans-Tympanic Drug Delivery for the Treatment of Ototoxicity at JoVE.com

本文所述的工作得到了 RO1 CA166907、NIDCD RO1-DC 002396 和 RO3 DC011621 的支持。

雄性大鼠是按照国家卫生研究院的动物使用指南和由南伊利诺伊大学医学院实验室动物护理和使用委员会批准的协议处理的。在药物管理局麻醉前和72小时后, 对大鼠进行听觉脑干反应 (ABR) 检查, 以验证其对鼓膜药物传递的影响。
1. 听觉脑干反应 (ABR)
注意:通过听觉测试设备和软件采集 ABR 测量结果。ABR 代表诱发电位或高频波产生的第八颅神经 ...

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通过鼓膜管理途径, 可以将药物和其他药物的局部运送到耳蜗, 如果系统地进行管理, 可能会产生明显的系统性副作用。这种药物管理方法允许药物迅速进入行动地点, 其剂量要比通过系统途径所能达到的要高得多。在这里和发表的结果表明, 通过鼓膜管理的 [R] n-苯基异丙腺苷 (r-PIA) 保护耳蜗从顺铂诱导的外毛细胞损失 (图 1)19和诱导炎症的表现,...

外周听觉系统非常敏感的药物, 如顺铂和氨基糖苷类抗生素。顺铂是一种广泛使用的化疗剂, 用于治疗各种实体肿瘤, 如卵巢, 睾丸, 头颈癌。使用这种药物的耳毒性是剂量限制和相当常见的, 影响75-100% 的患者治疗1。其他药物, 如卡铂和奥沙利铂, 已成为替代顺铂2,3,4,5, 但它们的用处仅限于少数癌症。
早期研究表明活性氧 (ROS) 对顺铂和氨基糖苷类产生的耳毒性有重要作用。随后的研究表明, NOX3 异构体氧化酶是耳蜗中 ROS 的主要来源, 并由顺铂6,7激活。ROS 的产生危及细胞的抗氧化缓冲能力, 导致细胞膜脂质过氧化增加8。此外, 顺铂增加了羟基自由基产生剧毒醛 4-hydroxynonenal (4-他), 一个引发细胞死亡9,10。根据这些发现, 对治疗顺铂耳毒性的几种抗氧化剂进行了研究。这些包括 n-乙酰半胱氨酸 (NAC), 硫代硫酸钠 (STS), 汀和 d-蛋氨酸。然而, 抗氧化剂治疗的一个主要关注是, 这些抗氧化剂可以降低顺铂化疗的功效时, 系统地管理11通过与硫醇组的相互作用的抗氧化剂分子。
鉴于这些问题的抗氧化剂治疗, 本研究的目的是检查传递抗氧化剂和其他药物的耳蜗, 以减少听力损失的跨鼓膜路线。下面描述的药物和短干涉 (si) RNA 的跨鼓膜路线似乎特别有希望。

<table border="0" cellpadding="0" cellspacing="0" style="width:1025px;" width="1025">
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		<tr height="19">
			<td height="19" style="height:19px;width:423px;">Ketathesia (100 mg/ml) 10 ml</td>
			<td style="width:192px;">Henry Schein</td>
			<td style="width:127px;">56344</td>
			<td style="width:284px;">Controlled substance&#160;</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">AnaSed Injection/Xylazine (20 mg/ml) 20 ml</td>
			<td>Henry Schein</td>
			<td>33197</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">2.5 mm disposable ear specula</td>
			<td>Welch Allyn</td>
			<td>52432</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Surgical Scope</td>
			<td>Zeiss</td>
			<td></td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">29 G X 1/2 insulin syringe</td>
			<td>Fisher Scientific</td>
			<td>14-841-32&#160;</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">cis-Diammineplatinum(II) dichloride</td>
			<td>Sigma Aldrich</td>
			<td>P4394</td>
			<td>TOXIC - wear proper PPE</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Harvard 50-7103 Homeothermic Blanket Control Unit</td>
			<td>Harvard Apparatus</td>
			<td>Series 863</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Excel International 21 G X 3/4 butterfly needle</td>
			<td>Fisher</td>
			<td>14-840-34&#160;</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">BSP Single Speed Syringe Pump</td>
			<td>Brain Tree Sci, Inc</td>
			<td>BSP-99</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">Pulse Sound Measurement System</td>
			<td>Bruel &#38; Kjaer</td>
			<td>Pulse 13 software</td>
			<td></td>
		</tr>
		<tr height="20">
			<td height="20" style="height:20px;">High-Frequency Module</td>
			<td>Bruel &#38; Kjaer</td>
			<td>3560C</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">1/8&#8243; Pressure-field Microphone &#8212;-Type 4138</td>
			<td>Bruel &#38; Kjaer</td>
			<td>bp2030</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">High Frequency Transducer</td>
			<td>Intelligent Hearing System</td>
			<td>M014600</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Opti-Amp Power Transmitter</td>
			<td>Intelligent Hearing System</td>
			<td>M013010P</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">SmartEP ABR System</td>
			<td>Intelligent Hearing System</td>
			<td>M011110</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Disposable Subdermal EEG Electrodes</td>
			<td>CareFusion</td>
			<td>019-409700</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">16% Formaldehyde, Methanol-free</td>
			<td>Fisher Scientific</td>
			<td>28908</td>
			<td>TOXIC - wear proper PPE&#160;</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">7 mL Borosilicate Glass Scintillation Vial</td>
			<td>Fisher Scientific</td>
			<td>03-337-26</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">EDTA</td>
			<td>Fisher Scientific</td>
			<td>BP118-500</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Sucrose</td>
			<td>Fisher Scientific</td>
			<td>S5-500</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Tissue Plus OCT Compound</td>
			<td>Fisher Scientific</td>
			<td>4585</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">CryoMolds (15 mm x 15 mm x 5mm)</td>
			<td>Fisher Scientific</td>
			<td>22-363-553</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Microscope Slides (25mm x 75mm)</td>
			<td>MidSci</td>
			<td>1354W</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Coverslips (22 x 22 x 1)</td>
			<td>Fisher Scientific</td>
			<td>12-542-B</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Poly-L-Lysine Solution (0.01%)</td>
			<td>EMD Millipore</td>
			<td>A-005-C</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">HM525 NX Cryostat</td>
			<td>Thermo Fischer Scientific</td>
			<td>956640</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">MX35 Premier Disposable Low-Profile Microtome Blades</td>
			<td>Thermo Fischer Scientific</td>
			<td>3052835</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Wheaton&#8482;&#160;Glass 20-Slide Staining Dish with Removable Rack</td>
			<td>Fisher Scientific</td>
			<td>08-812</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Super Pap Pen Liquid Blocker</td>
			<td>Ted Pella, Inc.</td>
			<td>22309</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Normal Donkey Serum</td>
			<td>Jackson Immuno Research</td>
			<td>017-000-121</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">TritonX-100</td>
			<td>Acros</td>
			<td>21568</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">BSA</td>
			<td>Sigma Aldrich</td>
			<td>A7906</td>
			<td>Can be purchased through other vendors</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Phospho-Stat1 (Ser727) antibody</td>
			<td>Cell Signaling</td>
			<td>9177</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">VR1 Antibody (C-15)</td>
			<td>Santa Cruz</td>
			<td>sc-12503</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">DyLight 488 Donkey anti Rabbit</td>
			<td>Jackson Immuno Research</td>
			<td>711-485-152</td>
			<td>Discontinued</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">DyLight 488 Donkey anti Goat</td>
			<td>Jackson Immuno Research</td>
			<td>705-485-003</td>
			<td>Discontinued</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">Rhodamine (TRTIC) Donkey anti Rabbit</td>
			<td>Jackson Immuno Research</td>
			<td>711-025-152</td>
			<td>Discontinued</td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">ProLong&#174; Diamond Antifade Mountant w/ DAPI</td>
			<td>Thermo Fisher</td>
			<td>P36971</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">(&#8722;)-N6-(2-Phenylisopropyl)adenosine</td>
			<td>Sigma Aldrich</td>
			<td>P4532</td>
			<td></td>
		</tr>
		<tr height="19">
			<td height="19" style="height:19px;">8-Cyclopentyl-1,3-dipropylxanthine</td>
			<td>Sigma Aldrich</td>
			<td>C101</td>
			<td></td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">siRNA pSTAT1</td>
			<td>Qiagen</td>
			<td>Custome Made</td>
			<td>Kaur et al. 201120</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">siRNA NOX3</td>
			<td>Qiagen</td>
			<td>Custome Made</td>
			<td>Kaur et al. 201120</td>
		</tr>
		<tr height="22">
			<td height="22" style="height:22px;">Scrambled Negative Control siRNA</td>
			<td>Qiagen</td>
			<td>1022076</td>
			<td>Kaur et al. 201120</td>
		</tr>
	</tbody>
</table>

trans-tympanic drug delivery for the treatment of ototoxicity

保护剂治疗药物性耳毒性的系统管理受到限制, 因为这些保护剂可能会干扰初级药物的化疗效果。这种情况尤其适用于药物顺铂, 其抗癌作用因抗氧化剂而减弱, 为听力丧失提供了足够的保护。其他当前或潜在的 otoprotective 代理可能会造成类似的问题, 如果系统管理。将各种生物制品或保护剂直接应用于耳蜗, 可以使这些药物的高水平在局部具有有限的系统性副作用。在本报告中, 我们展示了一种跨鼓膜的方法, 提供各种药物或生物试剂的耳蜗, 这应该加强对耳蜗的基础科学研究, 并提供一个简单的方法指导使用 otoprotective 剂在诊所。本报告详细介绍了一种跨鼓膜药物传递方法, 并举例说明了该技术如何成功地应用于实验动物治疗顺铂耳毒性。

在顺铂治疗后三天大鼠的 ABR 反应显示阈值显著升高。通过鼓膜 (r) n-phenylisopropyladenosine (r-PIA), 腺苷 A1受体激动剂15, 顺铂前, 这些阈值的升高明显减少。R-PIA 在腺苷 A1受体上的作用的特异性表明, 它是由 8-环戊基-13-dipropylxanthine (DPCPX) 对抗,一个1 受体特定拮抗剂16。这种药物增强顺铂诱发的 ABR ?...

Watch this Scientific Journal Video about Trans-Tympanic Drug Delivery for the Treatment of Ototoxicity at JoVE.com

Trans-Tympanic Drug Delivery for the Treatment of Ototoxicity

本文提出了一种通过鼓膜入耳蜗进行药物局部化管理的技术。通过这条途径运送药物不会影响化疗药物如顺铂的抗癌功效。

经鼓膜药物治疗耳毒性的临床研究

The systemic administration of protective agents to treat drug-induced ototoxicity is limited by the possibility that these protective agents could ...

Research

JoVE Journal

Medicine

Thermal Ablation for the Treatment of Abdominal Tumors

热消融治疗腹部肿瘤

Percutaneous thermal ablation is an emerging treatment option for many tumors of the abdomen not amenable to conventional treatments. During a thermal ...

科研

医学

Osmotic Drug Delivery to Ischemic Hindlimbs and Perfusion of Vasculature with Microfil for Micro-Computed Tomography Imaging

药物输送到微型计算机断层扫描成像缺血后肢血管灌注与微滤渗透

Preclinical research in animal models of peripheral arterial disease plays a vital role in testing the efficacy of therapeutic agents designed to ...

Heterotopic Mucosal Engrafting Procedure for Direct Drug Delivery to the Brain in Mice

异位黏膜移植程序直接给药到小鼠的大脑

Delivery of therapeutics into the brain is impeded by the presence of the blood-brain barrier (BBB) which restricts the passage of polar and high ...

Slow-release Drug Delivery through Elvax 40W to the Rat Retina: Implications for the Treatment of Chronic Conditions

通过40W的Elvax缓释给药的大鼠视网膜：对慢性疾病的治疗

Diseases of the retina are difficult to treat as the retina lies deep within the eye. Invasive methods of drug delivery are often needed to treat these ...

Intraluminal Drug Delivery to the Mouse Arteriovenous Fistula Endothelium

腔内药物输送到鼠标动静脉瘘内皮

Delivery of therapeutic agents to enhance arteriovenous fistula (AVF) maturation can be administered either via intraluminal or external routes. The ...

Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients

在耐药性颞叶癫痫患者卵圆孔电极记录的网络分析

Approximately 30% of epilepsy patients are refractory to antiepileptic drugs. In these cases, surgery is the only alternative to eliminate/control ...

Pancreatic Duct Infusion: An Effective and Selective Method of Drug and Viral Delivery

胰腺管输液：药物和病毒输送的有效和选择性方法

The pancreas is a bifunctional organ with both endocrine and exocrine components. A number of pathologies can afflict the pancreas, including diabetes, ...

Optimized LC-MS/MS Method for the High-throughput Analysis of Clinical Samples of Ivacaftor, Its Major Metabolites, and Lumacaftor in Biological Fluids of Cystic Fibrosis Patients

经优化的 LC/ms 方法对囊性纤维化患者 Ivacaftor 及其主要代谢物和 Lumacaftor 的高通量分析

Defects in the cystic fibrosis trans-membrane conductance regulator (CFTR) are the cause of cystic fibrosis (CF), a disease with life-threatening ...

Improved Method for the Establishment of an In Vitro Blood-Brain Barrier Model Based on Porcine Brain Endothelial Cells

Improved Method for the Establishment of an In Vitro Blood-Brain Barrier Model Based on Porcine Brain Endothelial Cells

一种基于猪脑内皮细胞的体外血脑屏障模型的改进方法

The aim of this protocol presents an optimized procedure for the purification and cultivation of pBECs and to establish in vitro blood-brain barrier (BBB) ...

Novel Methods for Intranasal Administration Under Inhalation Anesthesia to Evaluate Nose-to-Brain Drug Delivery

吸入麻醉下鼻内给药评价鼻腔给脑药物的新方法

Intranasal administration has been reported to be a potential pathway for nose-to-brain delivery of therapeutic agents that circumvents the blood-brain ...