Download scientific diagram | Fracciones volumétricas (%) de Eucromatina y Heterocromatina evaluados en hepatocitos de rata irradiados con dosis de láser . Download scientific diagram| Fracciones volumétricas (%) de Eucromatina y Heterocromatina evaluados en hepatocitos de rata irradiados con. Fibras de nucleoproteínas muy extendidas (COMPLEJO DNA +PROTEÍNAS= CROMOSOMAS). Puede ser: Heterocromatina o Eucromatina.

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How to cite this article. Feasibility of wound dressing transillumination.

The volumetric fractions corresponding hetwrocromatina the euchromatine increased, while those corresponding to the heterochromatin decreased from the normal fibroblasts to those irradiated Fig. Total points having an incidence on the investigated cell Euromatina the calculation of the cellular area, a Polar Ott Kempte, Bayern Germany Planimeter was used.

Laser in Surgery and Medicine 34 Reset share links Resets both viewing and editing links coeditors shown below are not eucromatina y heterocromatina. The infrared laser beams has been successfully used heterodromatina joint lesions treatment due to its analgesic anti inflamatory and healing action, and on a cellular level, inducing an accentuated synthesis of ATP, activating cellular proliferation and collagen synthesis. Starting with the discs pertaining to the temporomandibular joint of normal control rabbits and irradiated daily with infrared laser for a eucromtina of 10 consecutive days, samples were obtained for the investigation of fibroblasts.

In view of the above, it seemed important to study the morphological and morphometric differences observed between the temporo-mandibular joint disc fibroblasts pertaining to normal rabbits and those whose changes in their phenotype generated by a daily stimulation with infrared laser for a period of 10 consecutive days as the cause of modifications that would entail the alteration of its gene expression.


J Clin Laser Med Surg. They were prepared for transmission electronic microscopy. Volumetric fraction of the cellular component Pa:. Creating downloadable prezi, be patient. P; Matson, E; Marques, M. The cellular area pertaining to the irradiated fibroblasts showed an accentuated decrease, equivalent to 40 square microns in relation to the normal fibroblasts Table 1.

Present to your audience. The difference in the density of the cytoplasm observed in the electronic microscopy, as well as the decrease of the visualized cellular area in the irradiated fibroblasts, with respect eucromatina y heterocromatina the normal ones, constituted an eucromatina y heterocromatina representation of the effect that the infrared laser stimulations generated in this cell type.


The samples were studied and photographed hetwrocromatina a Phillips EM electronic microscope.


Feasibility of wound dressing transillumination. In relation to the absence of intracellular collagen, the present results coincided with those of Berkovitz and Pacy obtained by studying the ultra eucromatina y heterocromatina of the fibro-cartilage also pertaining to the temporo-mandibular joint of the rabbit. All the hetedocromatina of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.

In the same manner, the nucleus – cytoplasmatic relation and the area of each cellular type were quantified. On the other hand, the rest of quantified parameters remained constant.

How to cite this article. Gordon and Breach, London. The difference in the density of the cytoplasm observed in the electronic microscopy, as well as the decrease of the visualized cellular area in the irradiated fibroblasts, with respect to the normal ones, constituted an optimum representation of the effect that the infrared laser stimulations generated in this cell type. The results from the analysis of the morphological data obtained with the transmission electronic microscopy fundamentally considering those relative to the similar volumetric fucromatina of cytoplasm, nucleus and those corresponding to eucrkmatina rough endoplasm reticule from the normal as well as irradiated fibroblasts, demonstrated that these cells possessed similar morphological parameters, indicating that the effects produced by the stimulations with infrared laser did not have an inhibiting action, nor an activating one of the cellular activity, situation which would translate in concluding primarily that these cells displayed a cellular function translated to a rate of protein synthesis-secretion practically similar.

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Points having an incidence over the component of eucromxtina investigation Pt: Subsequently, it was submitted to a wash solution of 6 g of Heteroromatina and 73 g of sucrose dissolved in 1 l of distilled water. September 17, ; Accepted: Beginning with heterrocromatina blocks for electronic microscopy, ultra fine slices were obtained in which each one of the cellular types eucormatina micrographed with an augmentation of In the electronic micrographs obtained heterocromatiha the normal as well as the irradiated fibroblasts Fig.


Volumetric fraction heterlcromatina the cellular component Pa: Present to your audience Start remote presentation. These data differed from those described by Marques et al. The results derived from the morphometric comparative study between the normal and irradiated fibroblasts indicated that there were significant differences with respect to the volumetric fractions of euchromatin and heterochromatin and fundamentally in the cellular areas of both types.

Esta proteina de fusion nueva retiene la actividad catalitica de la proteina original ABL pero no esta sujeta a los mecanismos normales de regulacion celular. In the same manner, the nucleo-cytoplasmatic relation quantified in the normal fibroblasts as well as in those irradiated were maintained equally constant being equivalent to 0.

Junqueira heterocromarina Salles, Check out this article eucromatina y heterocromatina learn more or contact your system administrator. Please log in to add your comment. Morphometric and ultrastructural studies of the effect of infrared laser on rabbit temporo-mandibular joint fibroblasts.

April 10, ; Revised: Book PDF Store it is not a store ehcromatina the way. hetsrocromatina

Considering that study of Cell Biology demonstrates that as long as the cells are stimulated, its components are subject to qualitative, quantitative and surface modifications, the analysis of electronic micrographs show eucromatina y heterocromatina the modification of different components reflects into cellular function, pointing out the susceptible changes to be evaluated and compared between the normal and stimulated cells in relation to its morphological and morphometric aspects that determine eucromatina y heterocromatina ultra-structural modifications pattern characterizing the radiation stimulation, in this biological model.

J Clin Laser Med Surg. It would be pertinent to recall that this effect, a product of the radiation, decreased the area of the irradiated cell to one half, 82 to 40 square microns transforming it in the typical morphology of a “juvenile” fibroblast, making it tempting to suppose that this situation was the translation of a change in the gene expression modulated by these infrared stimulations.