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        "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Se ha realizado un modelo experimental de fumador pasivo exponiendo a ratas al humo de 10 cigarrillos al d&#237;a&#47; dos meses&#46; Paralelamente se estableci&#243; un grupo control&#46; El estudio ha sido fundamentalmente morfol&#243;gico&#44; dividiendo los hallazgos en&#58; a&#41; citol&#243;gicos del lavado broncoalveolar &#40;LBA&#41; &#40;linfocitos&#44; macr&#243;fagos y polimorfonucleares&#41;&#59; b&#41; morfom&#233;tricos &#40;hiperinsuflaci&#243;n pulmonar&#44; engrosamiento septal&#44; hemosiderina&#44; &#225;rea linf&#225;tica&#44; epitelio en contacto &#40;Ep C&#41;&#44; epitelio plano &#40;Ep P&#41; y alveolos ocupados y c&#41; isot&#243;picos &#40;captaci&#243;n de Ga67 por el pulm&#243;n y cociente pulm&#243;n&#47;h&#237;gado&#41;&#46; El LBA present&#243; un aumento significativo de linfocitos &#40;x&#175; &#61; 27&#44;1&#37;&#41; y polimorfo-nucleares &#40;x&#175; &#61; 5&#44;6&#37;&#41; &#40;p &#60; 0&#44;001&#41;&#46; El estudio morfom&#233;trico mostr&#243; un aumento de todas las variables&#44; que fue significativo &#40;p &#60; 0&#44;01&#41; a excepci&#243;n del engrosamiento septal&#46; La captaci&#243;n de Ga67 fue menor en los pulmones de los animales expuestos a humo de tabaco&#44; habiendo diferencias significativas en el cociente P&#47;H&#46; Se concluye que la exposici&#243;n de forma pasiva a humo de tabaco produce alteraciones alveolo-intersticiales similares a las descritas en los modelos experimentales en rata de fumador activo&#46;</p></span>"
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        "resumen" => "<span id="abst0010" class="elsevierStyleSection elsevierViewall"><p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">A passive smoking experimental model was designed by exposing rats to the smoke of 10 cigarettes&#47;day for 2 months&#46; A control group was established parallel to the former&#46; This study consisted chiefly of measurement of morphologic parameters which were divided into&#58; a&#41; cytologic parameters at bronchoalveolar lavage &#40;lymphocytes&#44; macrophages and polymorphonuclears&#41;&#59; b&#41; morphometric parameters &#40;hyperinflation of the lung&#44; septal thickening&#44; deposition of hemosiderin&#44; lymphatic area&#44; epithelium in contact&#44; flat epithelium&#44; and occupied alveoli&#41;&#59; and c&#41; isotopic parameters &#40;pulmonary uptake of 67Gallium and lung&#47;liver ratio&#41;&#46; Bronchoalveolar lavage revealed a significant increase in the number of lymphocytes &#40;x&#175; &#61; 27&#46;1&#37;&#41; and polymorphonuclears &#40;x&#175; &#61; 5&#46;6&#37;&#41; &#40;p &#60; 0&#46;001&#41;&#46; The morphometric study disclosed an increase in all variables which was significant &#40;p &#60; 0&#46;01&#41; except for septal thickening&#46; The 67Gallium uptake was lower in the lungs of the animals exposed to tobacco smoke and there were significant differences in liver&#47;lung ratio&#46; It is concluded that passive exposure to tobacco smoke produces alveolo-interstitial alterations which are similar to those reported in experimental models of active smoking in rats&#46;</p></span>"
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Vol. 25. Issue 1.
Pages 3-9 (January - February 1989)
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Vol. 25. Issue 1.
Pages 3-9 (January - February 1989)
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Alteraciones alveolo-intersticiales en el fumador pasivo. Modelo morfometrico experimental
Alveolo-interstitial alterations in passive smoking. Morphometric experimental model
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A.I. Maurain Viloria, J. de D. Escolar Castellón, M.D. Ariño Matín, P. Miñana Amada, P. Roche Roche
Departamento de Ciencias Morfológicas. Facultad de Medicina. Universidad de Zaragoza
E. Prats Rivera*
* Servicio de Medicina Nuclear. Facultad de Medicina. Universidad de Zaragoza
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Se ha realizado un modelo experimental de fumador pasivo exponiendo a ratas al humo de 10 cigarrillos al día/ dos meses. Paralelamente se estableció un grupo control. El estudio ha sido fundamentalmente morfológico, dividiendo los hallazgos en: a) citológicos del lavado broncoalveolar (LBA) (linfocitos, macrófagos y polimorfonucleares); b) morfométricos (hiperinsuflación pulmonar, engrosamiento septal, hemosiderina, área linfática, epitelio en contacto (Ep C), epitelio plano (Ep P) y alveolos ocupados y c) isotópicos (captación de Ga67 por el pulmón y cociente pulmón/hígado). El LBA presentó un aumento significativo de linfocitos (x¯ = 27,1%) y polimorfo-nucleares (x¯ = 5,6%) (p < 0,001). El estudio morfométrico mostró un aumento de todas las variables, que fue significativo (p < 0,01) a excepción del engrosamiento septal. La captación de Ga67 fue menor en los pulmones de los animales expuestos a humo de tabaco, habiendo diferencias significativas en el cociente P/H. Se concluye que la exposición de forma pasiva a humo de tabaco produce alteraciones alveolo-intersticiales similares a las descritas en los modelos experimentales en rata de fumador activo.

A passive smoking experimental model was designed by exposing rats to the smoke of 10 cigarettes/day for 2 months. A control group was established parallel to the former. This study consisted chiefly of measurement of morphologic parameters which were divided into: a) cytologic parameters at bronchoalveolar lavage (lymphocytes, macrophages and polymorphonuclears); b) morphometric parameters (hyperinflation of the lung, septal thickening, deposition of hemosiderin, lymphatic area, epithelium in contact, flat epithelium, and occupied alveoli); and c) isotopic parameters (pulmonary uptake of 67Gallium and lung/liver ratio). Bronchoalveolar lavage revealed a significant increase in the number of lymphocytes (x¯ = 27.1%) and polymorphonuclears (x¯ = 5.6%) (p < 0.001). The morphometric study disclosed an increase in all variables which was significant (p < 0.01) except for septal thickening. The 67Gallium uptake was lower in the lungs of the animals exposed to tobacco smoke and there were significant differences in liver/lung ratio. It is concluded that passive exposure to tobacco smoke produces alveolo-interstitial alterations which are similar to those reported in experimental models of active smoking in rats.

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