Name: near infrared (nir) light increases expression of a marker of mitochondrial function in the mouse vestibular sensory epithelium
Uploaded: 2015-03-14T14:00:00
Description: Watch this Scientific Journal Video about Near Infrared NIr Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium at JoVE.com

Los autores desean agradecer al Dr. Paul Witting y Genevieve Fong por su ayuda con la extracción de ARNm y PCR, y la Garnett Passe y Rodney Williams Memorial Fundación para el apoyo.

Declaración de Ética: Todos los procedimientos descritos a continuación fueron aprobados por la Universidad de Comité de Ética Animal Sydney. 1. Los animales NOTA: 1 y 8 - Un 9 meses de edad ratones (C57 / BL6) se obtuvieron del Centro de Recursos Animales (Perth, Australia). Los animales fueron alojados en el Fondo para Bosch de roedores en la Universidad de Sydney. <ol><li> Ratones Casa en jaulas estándar del ratón en un 12/12 horas de luz / oscuridad ...

<ol>
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Los resultados representativos descritos aquí muestran que breve entrega transcraneal de la luz NIR (90 seg / día durante 5 días) es suficiente para elevar los niveles de expresión de antioxidantes en ratones de edad avanzada en comparación con los ratones tratados con placebo. Mientras que el calor emitido podría representar una fuente de mitocondrial y / o activación neuronal, según lo informado por vestibular rata aferentes 24 - nuestra medición del calor emitido por el NIR LED dispositivo fue &lt...

Disminución en los resultados equilibrio y caídas posteriores son comunes, y por desgracia a menudo características definitorias de envejecimiento natural 1. El impacto de esta disminución puede ser tanto físico y social, y reduce significativamente la calidad de vida de las personas mayores. En respuesta, las terapias físicas y de rehabilitación han sido el foco de la investigación de cataratas, pero no se han asociado con la reducción constante en la prevalencia de caídas repetidas. Al mismo tiempo, el trabajo de investigación de los cambios en el sistema vestibular periférico o central (el sistema responsable de mantener el equilibrio) es escasa, y posibles estrategias terapéuticas dirigidas a estos sistemas y las causas subyacentes del desequilibrio limitado. Trabajos recientes sobre los trastornos neurodegenerativos asociados con la edad, incluyendo la degeneración macular relacionada con la edad 2-4, modelos de enfermedad de Alzheimer 5-8, y la enfermedad de Parkinson 9-12 han demostrado efectos neuroprotectores de simple aplicación no invasiva de infrarrojo cercano (NIR) la luz. Además, en el sistema vestibular, NIR se ha utilizado para aumentar la actividad de las neuronas aferentes primarias vestibulares in vitro 13. Aunque no se entiende bien el mecanismo de la luz NIR, la mayoría de los estudios que utilizan NIR han sugerido que NIR estimula las mitocondrias complejo IV (citocromo c oxidasa) 14-17 para facilitar el metabolismo celular. En el epitelio sensorial vestibular la placa subcuticular de células que el cabello de tipo es denso en las mitocondrias de 18 años y, como tal, puede representar un punto de acción para el tratamiento terapéutico NIR. Aquí, una breve régimen, el tratamiento no invasivo de transcraneal aplica NIR que se puede utilizar para medir el metabolismo celular (y por implicación, la función mitocondrial) en el ratón epitelio sensorial vestibular se describe. También se discutió es una preparación del epitelio sensorial vestibular y se muestra que NIR aumenta la expresión de un ubiquitonos anti-oxidante (superóxido dismutasa 1) en el epitelio sensorial - previamente demostrado ser importante para la supervivencia de las células ciliadas cóclea 19.

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			<td height="42" style="height:42px;">Quantum WARP 10</td>
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			<td height="63" style="height:63px;">Screw top microtubules</td>
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			<td height="21" style="height:21px;">Standard Pattern Scissors</td>
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			<td height="21" style="height:21px;width:216px;">Friedman-Pearson Rongeurs</td>
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			<td height="42" style="height:42px;width:216px;">Stereo microscope</td>
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			<td height="21" style="height:21px;width:216px;">Dumont #5 SF Forceps</td>
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			<td height="21" style="height:21px;width:216px;">Isolate II RNA Micro Kit</td>
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near infrared (nir) light increases expression of a marker of mitochondrial function in the mouse vestibular sensory epithelium

Las estrategias para atenuar la disminución en la función del equilibrio con la edad son predominantemente centrada en terapias físicas que incluyen tareas de equilibrio y ejercicios. Sin embargo, estos enfoques no abordan las causas subyacentes del declive de equilibrio. Utilizando ratones, se evaluó el impacto de la luz del infrarrojo cercano (NIR) en el metabolismo de las células en el epitelio sensorial vestibular. Los datos recogidos muestran que esta intervención simple y seguro puede proteger estas células vulnerables de los efectos perjudiciales del envejecimiento natural. ARNm se extrajo a partir del epitelio sensorial vestibular periférica aislada (ampullaris crista y la mácula del utrículo) y posteriormente se transcribe en una biblioteca de ADNc. Después, esta biblioteca se probaron para la expresión de antioxidante ubicua (SOD-1). Entonces Antioxidante expresión génica se utilizó para cuantificar el metabolismo celular. Utilizando la entrega transcraneal de Nir en jóvenes (4 semanas) y mayores (8-9 meses) los ratones, y un régimen de tratamiento breve (90 seg / día durante 5 díasays), este trabajo sugiere Nir solo puede ser suficiente para mejorar la función mitocondrial en el epitelio sensorial vestibular. Dado que actualmente no hay métodos disponibles, asequibles, no invasivos de la terapia para mejorar la función de las células ciliadas vestibulares, la aplicación de radiación NIR externa proporciona una posible estrategia para contrarrestar el impacto del envejecimiento en el metabolismo celular enel epitelio sensorial vestibular.

Para comparar el impacto del tratamiento en Nir joven (4 semanas) y mayores (8-9 meses) los ratones que mide la expresión de antioxidante superóxido dismutasa 1 (SOD-1) en jóvenes (n = 16) y mayores (n = 20) Los ratones que fueron NIR-tratada, tratada simulada, o bloqueado-NIR. La Figura 2 muestra un aumento significativo en normalizado SOD-1 la expresión de β-actina de más de 2 veces en los animales jóvenes tratados con NIR jóvenes en comparación con los animales tratados con placebo (p &lt;0,...

Watch this Scientific Journal Video about Near Infrared NIr Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium at JoVE.com

Near Infrared NIr Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium

Infrarrojo Cercano (NIR) Luz aumenta la expresión de un marcador de la función mitocondrial en el ratón vestibular sensorial Epitelio

La disfunción mitocondrial es una característica de la senescencia celular. En este trabajo se utiliza el tratamiento no invasivo de infrarrojo cercano (NIR) para mejorar la función mitocondrial en el ratón epitelio sensorial vestibular envejecimiento.

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Near Infrared (NIr) Light Increases Expression of a Marker of Mitochondrial Function in the Mouse Vestibular Sensory Epithelium

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El uso de un contador de células automatizado para simplificar estudios de expresión génica: siRNA Derribo de IL-4 la expresión génica en células dependientes Namalwa

The use of siRNA mediated gene knockdown is continuing to be an important tool in studies of gene expression.  siRNA studies are being conducted not only ...

In vitro Reconstitution of the Active T. castaneum Telomerase

In vitro Reconstitution of the Active T. castaneum Telomerase

En la reconstitución in vitro de los activos T. castaneum telomerasa

Efforts to isolate the catalytic subunit of telomerase, TERT, in sufficient quantities for structural studies, have been met with limited success for more ...

Using High Resolution Computed Tomography to Visualize the Three Dimensional Structure and Function of Plant Vasculature

El uso de alta resolución de tomografía computarizada para visualizar la estructura tridimensional y la función de la Planta Vasculatura

High resolution x-ray computed tomography (HRCT) is a non-destructive diagnostic imaging technique with sub-micron resolution capability that is now being ...

MicroRNA Expression Profiles of Human iPS Cells, Retinal Pigment Epithelium Derived From iPS, and Fetal Retinal Pigment Epithelium

Perfiles de expresión de microARN de las células iPS humanas, de la retina del epitelio pigmentario Derivado de Ips y Fetal epitelio pigmentario de la retina

The objective of this report is to describe the protocols for comparing the microRNA (miRNA) profiles of human induced-pluripotent stem (iPS) cells, ...

Method for the Assessment of Effects of a Range of Wavelengths and Intensities of Red/near-infrared Light Therapy on Oxidative Stress In Vitro

Method for the Assessment of Effects of a Range of Wavelengths and Intensities of Red/near-infrared Light Therapy on Oxidative Stress In Vitro

Método para la Evaluación de los efectos de un rango de longitudes de onda e intensidades de / Terapia de luz del infrarrojo cercano Red sobre el estrés oxidativo<em&gt; In Vitro</em

Red/near-infrared light therapy (R/NIR-LT), delivered by laser or light emitting diode (LED), improves functional and morphological outcomes in a range of ...

Studying Mitochondrial Structure and Function in Drosophila Ovaries

Studying Mitochondrial Structure and Function in Drosophila Ovaries

Estudiar mitocondrial Estructura y función en<em&gt; Drosophila</em&gt; Los ovarios

Analysis of the mitochondrial structure-function relationship is required for a thorough understanding of the regulatory mechanisms of mitochondrial ...

Primary Cell Cultures from the Mouse Retinal Pigment Epithelium

Cultivos celulares primarios de células del epitelio pigmentario de la retina del ratón

The retinal pigment epithelium (RPE) is a highly polarized multi-functional epithelium that is located between the neural retina and the choroid of the ...