Amebic Liver Abscess in Rat: Morphological Evidence of Innate Immune Modulation by the Sympathetic Nervous System/ Absceso Hepatico Amebiano en Rata: Evidencia Morfologica de la Modulacion de la Respuesta Inmune Innata por el Sistema Nervioso Simpatico

All organs of the immune system are innervated and almost all neurotransmitter receptors are present on immune cells. We studied the effects of sympathetic innervation in the development of amebic liver abscess (ALA) in rats. Our results showed that lack of sympathetic innervation promote a decrease...

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Veröffentlicht in:International journal of morphology 2015-03, Vol.33 (1), p.213
Hauptverfasser: Munoz-Ortega, Ma, Cervantes-Garcia, Daniel, Quintanar-Stephano, Andres, del Rosario, Maria, Campos-Esparza, Garcia-Lorenzana, Mario, Campos-Rodriguez, R, Rodriguez, M.G, Ventura-Juarez, Javier
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container_title International journal of morphology
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creator Munoz-Ortega, Ma
Cervantes-Garcia, Daniel
Quintanar-Stephano, Andres
del Rosario, Maria
Campos-Esparza
Garcia-Lorenzana, Mario
Campos-Rodriguez, R
Rodriguez, M.G
Ventura-Juarez, Javier
description All organs of the immune system are innervated and almost all neurotransmitter receptors are present on immune cells. We studied the effects of sympathetic innervation in the development of amebic liver abscess (ALA) in rats. Our results showed that lack of sympathetic innervation promote a decrease in size of ALA. We found scarce amoebas, increased the number of neutrophils and a few collagen fibers surrounding the abscess, meanwhile in control group, we observed abscesses areas with typical necrosis including trophozoites and neutrophils. Macrophages were differentially distributed surrounding abscess area in control and vehicle groups, but equally located in and outside of the abscesses in sympathectomized rat. No significant differences were observed on NK cells in analysed groups. In cytokines quantification studies, we observed down- expression of IFN-[gamma] and TNF-a, moreover, we found overexpression of IL-10 in sympathectomized and ALA group. In conclusion, our results suggest that elimination of sympathetic nerve fibers in a model rat of amebic liver abscess induces reduction of the innate immune response and presence of amebas through the liver at seven days post-inoculation. KEY WORDS: Sympathectomy; Rat; E. histolytica; Amebic liver abscess. Todos los organos del sistema inmune estan inervados y casi todos los receptores para neurotransmisores estan presentes en las celulas de la respuesta inmune. Nosotros estudiamos el efecto de la inervacion simpatica en el desarrollo del Absceso Hepatico Amebiano (AHA) en ratas. Nuestros resultados muestran que la inervacion simpatica promueve una disminucion en el tamano del AHA. Nosotros encontramos areas fibroticas bien definidas con algunas amibas, mayor numero de neutrofilos y pocas fibras de colagena rodeando el area de dano, mientras que en el grupo control, nosotros observamos areas con necrosis, trofozoitos y pocos neutrofilos en el area fibrotica. Los macrofagos se observaron distribuidos en el area fibrotica en los animales simpatectomizados, mientras que en los controles encontramos a los macrofagos distribuidos en la periferia del absceso. No se encontro diferencia significativa en la distribucion y cantidad de celulas NK. En el estudio de citocinas nosotros observamos una disminucion de IFN-g y TNF-[alpha] y un incremento de IL-10 en animales simpatectomizados. En conclusion, nuestros resultados sugieren que la eliminacion de las fibras del sistema nervioso simpatico en el modelo de AHA en ra
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We studied the effects of sympathetic innervation in the development of amebic liver abscess (ALA) in rats. Our results showed that lack of sympathetic innervation promote a decrease in size of ALA. We found scarce amoebas, increased the number of neutrophils and a few collagen fibers surrounding the abscess, meanwhile in control group, we observed abscesses areas with typical necrosis including trophozoites and neutrophils. Macrophages were differentially distributed surrounding abscess area in control and vehicle groups, but equally located in and outside of the abscesses in sympathectomized rat. No significant differences were observed on NK cells in analysed groups. In cytokines quantification studies, we observed down- expression of IFN-[gamma] and TNF-a, moreover, we found overexpression of IL-10 in sympathectomized and ALA group. In conclusion, our results suggest that elimination of sympathetic nerve fibers in a model rat of amebic liver abscess induces reduction of the innate immune response and presence of amebas through the liver at seven days post-inoculation. KEY WORDS: Sympathectomy; Rat; E. histolytica; Amebic liver abscess. Todos los organos del sistema inmune estan inervados y casi todos los receptores para neurotransmisores estan presentes en las celulas de la respuesta inmune. Nosotros estudiamos el efecto de la inervacion simpatica en el desarrollo del Absceso Hepatico Amebiano (AHA) en ratas. Nuestros resultados muestran que la inervacion simpatica promueve una disminucion en el tamano del AHA. Nosotros encontramos areas fibroticas bien definidas con algunas amibas, mayor numero de neutrofilos y pocas fibras de colagena rodeando el area de dano, mientras que en el grupo control, nosotros observamos areas con necrosis, trofozoitos y pocos neutrofilos en el area fibrotica. Los macrofagos se observaron distribuidos en el area fibrotica en los animales simpatectomizados, mientras que en los controles encontramos a los macrofagos distribuidos en la periferia del absceso. No se encontro diferencia significativa en la distribucion y cantidad de celulas NK. En el estudio de citocinas nosotros observamos una disminucion de IFN-g y TNF-[alpha] y un incremento de IL-10 en animales simpatectomizados. En conclusion, nuestros resultados sugieren que la eliminacion de las fibras del sistema nervioso simpatico en el modelo de AHA en rata, reduce la respuesta inmune innata y persisten amebas en el tejido danados a los 7 dias post-inoculacion. PALABRAS CLAVE: Simpatectomia; Rata; E. histolytica; Absceso hepatico amebiano.</description><identifier>ISSN: 0717-9367</identifier><language>spa</language><publisher>Universidad de La Frontera, Facultad de Medicina</publisher><subject>Collagen ; Killer cells ; Liver ; Liver diseases ; Macrophages</subject><ispartof>International journal of morphology, 2015-03, Vol.33 (1), p.213</ispartof><rights>COPYRIGHT 2015 Universidad de La Frontera, Facultad de Medicina</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780</link.rule.ids></links><search><creatorcontrib>Munoz-Ortega, Ma</creatorcontrib><creatorcontrib>Cervantes-Garcia, Daniel</creatorcontrib><creatorcontrib>Quintanar-Stephano, Andres</creatorcontrib><creatorcontrib>del Rosario, Maria</creatorcontrib><creatorcontrib>Campos-Esparza</creatorcontrib><creatorcontrib>Garcia-Lorenzana, Mario</creatorcontrib><creatorcontrib>Campos-Rodriguez, R</creatorcontrib><creatorcontrib>Rodriguez, M.G</creatorcontrib><creatorcontrib>Ventura-Juarez, Javier</creatorcontrib><title>Amebic Liver Abscess in Rat: Morphological Evidence of Innate Immune Modulation by the Sympathetic Nervous System/ Absceso Hepatico Amebiano en Rata: Evidencia Morfologica de la Modulacion de la Respuesta Inmune Innata por el Sistema Nervioso Simpatico</title><title>International journal of morphology</title><description>All organs of the immune system are innervated and almost all neurotransmitter receptors are present on immune cells. We studied the effects of sympathetic innervation in the development of amebic liver abscess (ALA) in rats. Our results showed that lack of sympathetic innervation promote a decrease in size of ALA. We found scarce amoebas, increased the number of neutrophils and a few collagen fibers surrounding the abscess, meanwhile in control group, we observed abscesses areas with typical necrosis including trophozoites and neutrophils. Macrophages were differentially distributed surrounding abscess area in control and vehicle groups, but equally located in and outside of the abscesses in sympathectomized rat. No significant differences were observed on NK cells in analysed groups. In cytokines quantification studies, we observed down- expression of IFN-[gamma] and TNF-a, moreover, we found overexpression of IL-10 in sympathectomized and ALA group. In conclusion, our results suggest that elimination of sympathetic nerve fibers in a model rat of amebic liver abscess induces reduction of the innate immune response and presence of amebas through the liver at seven days post-inoculation. KEY WORDS: Sympathectomy; Rat; E. histolytica; Amebic liver abscess. Todos los organos del sistema inmune estan inervados y casi todos los receptores para neurotransmisores estan presentes en las celulas de la respuesta inmune. Nosotros estudiamos el efecto de la inervacion simpatica en el desarrollo del Absceso Hepatico Amebiano (AHA) en ratas. Nuestros resultados muestran que la inervacion simpatica promueve una disminucion en el tamano del AHA. Nosotros encontramos areas fibroticas bien definidas con algunas amibas, mayor numero de neutrofilos y pocas fibras de colagena rodeando el area de dano, mientras que en el grupo control, nosotros observamos areas con necrosis, trofozoitos y pocos neutrofilos en el area fibrotica. Los macrofagos se observaron distribuidos en el area fibrotica en los animales simpatectomizados, mientras que en los controles encontramos a los macrofagos distribuidos en la periferia del absceso. No se encontro diferencia significativa en la distribucion y cantidad de celulas NK. En el estudio de citocinas nosotros observamos una disminucion de IFN-g y TNF-[alpha] y un incremento de IL-10 en animales simpatectomizados. En conclusion, nuestros resultados sugieren que la eliminacion de las fibras del sistema nervioso simpatico en el modelo de AHA en rata, reduce la respuesta inmune innata y persisten amebas en el tejido danados a los 7 dias post-inoculacion. 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We studied the effects of sympathetic innervation in the development of amebic liver abscess (ALA) in rats. Our results showed that lack of sympathetic innervation promote a decrease in size of ALA. We found scarce amoebas, increased the number of neutrophils and a few collagen fibers surrounding the abscess, meanwhile in control group, we observed abscesses areas with typical necrosis including trophozoites and neutrophils. Macrophages were differentially distributed surrounding abscess area in control and vehicle groups, but equally located in and outside of the abscesses in sympathectomized rat. No significant differences were observed on NK cells in analysed groups. In cytokines quantification studies, we observed down- expression of IFN-[gamma] and TNF-a, moreover, we found overexpression of IL-10 in sympathectomized and ALA group. In conclusion, our results suggest that elimination of sympathetic nerve fibers in a model rat of amebic liver abscess induces reduction of the innate immune response and presence of amebas through the liver at seven days post-inoculation. KEY WORDS: Sympathectomy; Rat; E. histolytica; Amebic liver abscess. Todos los organos del sistema inmune estan inervados y casi todos los receptores para neurotransmisores estan presentes en las celulas de la respuesta inmune. Nosotros estudiamos el efecto de la inervacion simpatica en el desarrollo del Absceso Hepatico Amebiano (AHA) en ratas. Nuestros resultados muestran que la inervacion simpatica promueve una disminucion en el tamano del AHA. Nosotros encontramos areas fibroticas bien definidas con algunas amibas, mayor numero de neutrofilos y pocas fibras de colagena rodeando el area de dano, mientras que en el grupo control, nosotros observamos areas con necrosis, trofozoitos y pocos neutrofilos en el area fibrotica. Los macrofagos se observaron distribuidos en el area fibrotica en los animales simpatectomizados, mientras que en los controles encontramos a los macrofagos distribuidos en la periferia del absceso. No se encontro diferencia significativa en la distribucion y cantidad de celulas NK. En el estudio de citocinas nosotros observamos una disminucion de IFN-g y TNF-[alpha] y un incremento de IL-10 en animales simpatectomizados. En conclusion, nuestros resultados sugieren que la eliminacion de las fibras del sistema nervioso simpatico en el modelo de AHA en rata, reduce la respuesta inmune innata y persisten amebas en el tejido danados a los 7 dias post-inoculacion. PALABRAS CLAVE: Simpatectomia; Rata; E. histolytica; Absceso hepatico amebiano.</abstract><pub>Universidad de La Frontera, Facultad de Medicina</pub></addata></record>
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subjects Collagen
Killer cells
Liver
Liver diseases
Macrophages
title Amebic Liver Abscess in Rat: Morphological Evidence of Innate Immune Modulation by the Sympathetic Nervous System/ Absceso Hepatico Amebiano en Rata: Evidencia Morfologica de la Modulacion de la Respuesta Inmune Innata por el Sistema Nervioso Simpatico
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