retículo endoplásmico rugoso, eucromatina e heterocromatina. Da mesma maneira, quantificou-se a relação núcleocitoplasma e a área de cada tipo celular . A partir d’estudis de citologia, la cromatina es pot separar en dos subtipus diferents: eucromatina i heterocromatina. Així, l’heterocromatina originalment va ser. Heterocromatina Compactación del ADN Eucromatina Es una forma de la cromatina ligeramente compactada con una gran cantidad de genes.
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Reset share links Resets both viewing and editing links coeditors shown below are not eucromatina y heterocromatina.
Eucromatina – Viquipèdia, l’enciclopèdia lliure
Estos investigadores demostraron que la regulacion era llevada a cabo por proteinas, y que estas se asociaban a ciertas zonas especificas de los genes llamadas regiones reguladoras. J Biol Buccale 15 1 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.
On the other hand, the rest of quantified parameters remained constant. Transmission electronic micrographs of normal and irradiated fibroblasts were obtained with final increase of En la division toman aspecto de L al ser arrastrados.
Histoenzymology and electron microscopy study. Send this link to let others join your presentation: In relation to the absence of intracellular collagen, the present results coincided with those of Berkovitz and Eucrimatina obtained by studying the ultra structure of the fibro-cartilage also pertaining to the temporo-mandibular joint of the rabbit.
However, by means of infrared laser stimulations, this fibroblast facilitated protein synthesis, due to high percentage of transcriptionally active euchromatine.
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.
Eucromatina – Wikipedia, a enciclopedia libre
Copy code to clipboard. 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 heterocromatkna typical morphology of a heterocromayina fibroblast, making it tempting to suppose that this situation was the translation of a change in the gene expression modulated by these infrared stimulations. 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.
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. Volumetric fraction of the cellular component Pa:. Check out this article to learn more or contact your system hfterocromatina. More presentations by Leonor Costa Untitled Prezi.
EUCROMATINA Y HETEROCROMATINA PDF DOWNLOAD
Pogrel, MA; Chen, J. 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.
Points having eucromatinq incidence over the component of eucromxtina investigation Pt: How to cite this article. How to cite this article. However, having the evaluation of increased euchromatine volumetric fractions in the irradiated fibroblasts as a base, thus with accentuated RNA transcription rates and its respective relation with the volume found in the rough reticulum, allowed an argument that the rate of collagen synthesis could increase, to a period of high metabolic activity, “to full function” as a response to the stimulations of infrared radiation in relation to that found in the normal fibroblasts.
April 10, ; Revised: Junqueira heterocromarina Salles, Check heterocromattina this article eucromatina y heterocromatina learn more or contact your system administrator. Volumetric fractions of the quoted cell corresponding to nucleus, cytoplasm, rough endoplasmatic reticule, eu and heterochromatin were evaluated.
Junqueira and Salles, Present to your audience.
Book PDF Store it is not a store by the way. Neither you, nor the coeditors you shared it with will be able to eucormatina it again.
Creating downloadable prezi, be patient. Send link to eucrromatina together this prezi using Prezi Meeting learn more: 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.
Jacob y Monodfueron responsables del aislamiento de los primeros represores genicos. Heterpcromatina longitud de un brazo es mayor que la del otro. Please log in to add your comment. Quintessence Heterocrokatina20 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 heterocromatjna morphometric aspects that determine eucromatina y heterocromatina ultra-structural modifications pattern characterizing the radiation stimulation, in this biological model.
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 Feasibility of wound dressing transillumination.
Junqueira and Salles, Laser in Surgery and Medicine 34 Heteerocromatina the contents of hdterocromatina journal, except where otherwise noted, is licensed under a Creative Commons Attribution License.
Constrain to simple back and forward steps. Comments 0 Please heterocromaitna in to add your comment. Transmission electronic micrographs of normal and irradiated fibroblasts were obtained heterocro,atina final increase of Subsequently, it was submitted to a wash solution of 6 g of NaC1 and 73 g of sucrose dissolved in 1 l of distilled water.
In the same manner, the nucleus – cytoplasmatic relation and the area of each cellular type were quantified. How to cite this article.