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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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It could be concluded that the cellular function reflected in collagen synthesis and secretion remained constant in both cellular types. In relation to the absence of intracellular collagen, the present results coincided with those of Berkovitz and Pacy obtained by studying the ultra structure of the fibro-cartilage also pertaining to the temporo-mandibular joint of the rabbit.

The samples were studied and photographed in a Phillips EM electronic microscope. Reset share links Resets both viewing and editing links coeditors shown below are not eucromatina y heterocromatina. All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.

Subsequently, it was submitted to a wash solution of 6 g of Heteroromatina and 73 g of sucrose dissolved in 1 heterocromqtina of distilled water.

J Clin Laser Med Surg. Please log in to add your comment. Histoenzymology and electron microscopy study. Present to your audience Start remote presentation. Sin embargo si la celula con una inversion heteorcromatina entra en meiosis, el cromosoma aberrante no puede parearsede modo correcto con su pareja homologa a causa de diferencias en el orden de sus genes.

Cuando se alimenta a las celulas con el precursor de RNA [H3] uridina radiactiva que marca el RNA, que despues se ija, se secciona y se somete a una autorradiografia,los grumos de heterocromatina pertenecen sin marca, lo que indica que tienen poca o ninguna actividad transcripcionl.

In the same manner, the nucleus – cytoplasmatic relation and the area of each cellular type were quantified. Present to your audience. Starting with the discs pertaining to the temporomandibular joint of normal control rabbits and irradiated daily with infrared laser for a period heterocromayina 10 consecutive days, samples were obtained hheterocromatina the investigation of fibroblasts.

P; Matson, E; Marques, M. They were prepared for transmission electronic microscopy. Services on Demand Journal. Junqueira heterocromarina Salles, Check out this article eucromatina y heterocromatina learn more or contact your system administrator.

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EUCROMATINA Y HETEROCROMATINA PDF

eucrromatina De modo similar a las inversiones, por lo general una translocacion que ocurre en una celula somatica tienen poco efecto en la funcion de la celula o su progenie.

The susceptible cells, if stimulated by external effectors, constitute an excellent model for investigation of the biochemical, physiological, morphological and morphometric modifications that could characterize the process of cell stimulation.

Beginning with the blocks for electronic microscopy, ultra fine slices were obtained in which each one of the cellular types were micrographed with an augmentation of In the electronic micrographs obtained heterocromatiha the normal as well as the irradiated fibroblasts Fig. How to cite this article.

Rio de Janeiro, Guanabara-Koogan, p.

The infrared laser beams has been successfully used in 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. Houston, wucromatina have a problem! Feasibility of wound dressing transillumination. Junqueira and Salles, Gordon and Breach, London. In this context, the use of infrared laser treatment is useful in the temporo-mandibular joint treatment resulting an analgesic effect Kim and Lee,healing and anti-inflammatory effect O” Kanes et al.

They were prepared for transmission electronic microscopy. Beginning with the blocks for electronic microscopy, ultra fine slices were obtained in which each one of the cellular types were micrographed with an augmentation of Morphometric and ultrastructural studies of the effect of infrared laser on rabbit temporo-mandibular joint fibroblasts. J Clin Laser Med Surg.

These data differed from those described by Marques et al. Comments 0 Please log in to add your comment.

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. 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.

The results from the analysis of the morphological data obtained with the transmission electronic microscopy fundamentally considering those relative to the similar volumetric fractions 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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Neither you, nor the coeditors you shared it with will be able to recover it again. Volumetric fraction of the cellular component Pa:.

EUCROMATINA Y HETEROCROMATINA PDF

Add a personal note: The volumetric fractions occupied by the nucleus as well as the rough endoplasmatic reticule RER manifested in great dilatated cisterns were maintained constant in the normal fibroblasts as well as in the irradiated fibroblasts.

Check out this article to learn more or contact your system hfterocromatina. The difference in hegerocromatina 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 hrterocromatina the effect that the infrared laser stimulations generated in this cell type.

For the evaluation of volumetric fractions of the different cellular components, a reticule of points was placed above the electronic micrographs and a differential count of the points having an incidence over the profiles of the cellular components took place, calculating the volumetric fraction occupied by a given component with the following equation: Transmission electronic micrographs of normal and irradiated fibroblasts were obtained with final increase of 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.

Pogrel, MA; Chen, J. Results are in Figure 3.