Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 4 de 4
Filter
Add more filters











Publication year range
1.
Córdoba; s.n; 2005. 56 p. ilus.
Thesis in Spanish | LILACS | ID: lil-428462

ABSTRACT

El carcinoma basocelular (CBC) es el tumor de presentación más común de la clínica dermatológica, siendo los individuos con mas riesgo a padecerlos aquellos de sexo masculino, mayores de 50 años y de raza caucásica. En este trabajo se estudiaron 60 biopsias de piel 30 pertenecientes a la variante sólida y 30 a la variante agresiva o ulcus rodens utilizando técnicas histológicas de rutina y especial de histoquímica (PAS, Alcian Blue PH: 0,5, ATO y lectinas ABL y EML) e inmunohistoquíomica para la detención de la oncoproteína bcl-2 y ULex europaeus. La observación con microscopio óptico permitió confirmar los cambios histopatológicos en las diferentes variantes clínico-patológicas coincidiendo en general con las descripciones dada por los autores consultados, aportando con la metodología aplicada, detalles y elementos de interés para el conocimiento histopatológico de esta enfermedad


Subject(s)
Carcinoma, Basal Cell
2.
Córdoba; s.n; 2005. 56 p. ilus. (278).
Thesis in Spanish | BINACIS | ID: bin-278

ABSTRACT

El carcinoma basocelular (CBC) es el tumor de presentación más común de la clínica dermatológica, siendo los individuos con mas riesgo a padecerlos aquellos de sexo masculino, mayores de 50 años y de raza caucásica. En este trabajo se estudiaron 60 biopsias de piel 30 pertenecientes a la variante sólida y 30 a la variante agresiva o ulcus rodens utilizando técnicas histológicas de rutina y especial de histoquímica (PAS, Alcian Blue PH: 0,5, ATO y lectinas ABL y EML) e inmunohistoquíomica para la detención de la oncoproteína bcl-2 y ULex europaeus. La observación con microscopio óptico permitió confirmar los cambios histopatológicos en las diferentes variantes clínico-patológicas coincidiendo en general con las descripciones dada por los autores consultados, aportando con la metodología aplicada, detalles y elementos de interés para el conocimiento histopatológico de esta enfermedad


Subject(s)
Carcinoma, Basal Cell
3.
Bioelectromagnetics ; 22(8): 589-95, 2001 Dec.
Article in English | MEDLINE | ID: mdl-11748677

ABSTRACT

The theoretical calculation about the dependence of the ionic current density across the cellular membrane on the intensity of the magnetic field applied to cellular tissue is presented. This interaction induces changes in the magnitude of the ionic current density across the cellular membrane and in the ionic concentration, and it also causes alterations in the osmotic pressure and in the capacity of the cellular tissues to absorb water. The magnetic field dependence of the ionic current densities J(p) (B) (positive ions) and J(n) (B) (negative ions), the membrane conductivity sigma (B), the ionic concentration in both membrane sides c(B), the osmotic pressure pi (B), and the water uptake rate by seeds k(w) (B) are presented. The increase in water uptake rate due to the applied magnetic field may be the explanation of the recently reported increase in the germination speed of the seeds treated with stationary magnetic fields.


Subject(s)
Magnetics , Seeds/metabolism , Water/metabolism , Cell Membrane/metabolism , Germination , Ion Channels/metabolism , Lactuca/growth & development , Lactuca/metabolism , Models, Biological , Osmotic Pressure , Seeds/growth & development
4.
Bioelectromagnetics ; 22(8): 596-602, 2001 Dec.
Article in English | MEDLINE | ID: mdl-11748678

ABSTRACT

An experimental study on water absorption by lettuce seeds previously treated in a stationary magnetic field of 0-10 mT is presented. A significant increase in the rate with which the seeds absorb water is observed in the interval 0-10 mT of magnetic treatment. An increment in the total mass of absorbed water in this interval is also observed. These results are consistent with the reports on the increase of germination rate of the seeds, and the theoretical calculation of the variations induced by magnetic fields in the ionic currents across the cellular membrane. The fields originate in changes in the ionic concentration and thus in the osmotic pressure which regulates the entrance of water to the seeds. The good correlation between the theoretical approach and experimental results provides strong evidence that the magnetic field alters the water relations in seeds, and this effect may be the explanation of the reported alterations in germination rate of seeds by the magnetic field.


Subject(s)
Magnetics , Seeds/metabolism , Water/metabolism , Cell Membrane/metabolism , Germination , Ion Channels/metabolism , Lactuca/growth & development , Lactuca/metabolism , Osmotic Pressure , Seeds/growth & development
SELECTION OF CITATIONS
SEARCH DETAIL