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1
artículo
Objective: To perform a literature review on oral squamous cell carcinoma, the presence of cancer stem cells; their association with the course of the disease and therapeutic applications. Methods: A search was performed in the PubMed database by entering the following algorithm: ((((neoplastic stem cells[MeSH Terms]) OR (Cancer stem cells[Text Word])) AND (Squamous Cell Carcinoma of Head and Neck[MeSH Terms])) AND (Oral squamous cell carcinoma[Text Word]), to find articles in english published between 2012 and 2022. The PRISMA diagram was used to identify and select the articles. Results: A result of 49 articles was obtained; of which 27 were chosen according to the title and abstract in their association with the topic. In addition, 8 additional articles suggested by their relationship with the information previously searched were included. In total, 35 articles were evaluated. There h...
2
artículo
Publicado 2000
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The Cellular production consists on containing the components and machines in cells, combining the production for process with the online productión, to obtain the advantages that offer both processes, in this case the company can offer variety of products and low costs.
3
artículo
Publicado 2000
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The Cellular production consists on containing the components and machines in cells, combining the production for process with the online productión, to obtain the advantages that offer both processes, in this case the company can offer variety of products and low costs.
4
artículo
Publicado 2023
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Objective: to describe the knowledge of university students about the effects on learning and health of excessive use of cell phones in classrooms. Methodology: descriptive and explanatory. The sample was made up of 207 students: 59 men and 148 women; administered instruments were applied. Results: Regarding learning, health and the use of cell phones in the classroom, 66% of students agree that the use of cell phones in the classroom affects learning; 44% would support banning cell phone use in classrooms. 68.6% recognize the teacher's authority to prohibit their use in the classroom, and 49.8% support the idea of creating a space to store students' cell phones during class. Conclusion: university students know that excessive cell phone use affects the physical and psychological health of users, and even the nervous system, generates addiction, affects human interaction, affects ...
5
artículo
Publicado 2020
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Objective: to develop a microfluidic system (lab-on-a-chip) for detecting circulating breast cancer tumor cells. Materials and methods: the device was designed using 3D technology, and it was manufactures using soft photolithography and a laser cutting machine. The system performance and its magnetic settings were assessed using Jurkat cells and breast cancer cells that show different expression of CD45 and EpCAM surface markers. Antibodies against these markers were bound to magnetic pellets. Additionally, iron nanoparticles were used for assessing their entrapment. Results: nanoparticles were significantly trapped in the area set by magnetic field modeling. Tumor cells labeled with magnetic antibodies became trapped. Conclusions: we were able to manufacture a lab-on-a-chip system that is capable to trap circulating breast cancer tumor cells, which may become an excellent tool for diagn...
6
artículo
Publicado 2018
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Se utilizaron exopolisacáridos (EPS) extraídos de cianobacterias de Nostoc commune para preparar sustratos celulares de baja adhesión para el crecimiento de células selectivas tumorales. Los sustratos fueron reforzados con bigotes de quitina y nanopartículas de almidón y caracterizados mediante espectroscopia infrarroja Fouriertransform, difracción de rayos X y pruebas de tracción. Se sembraron dos células independientes de anclaje, HeLa modificada por GFP y células THP-1 en las muestras para evaluar su interacción con los compuestos. Los resultados confirmaron la interacción de la superficie celular de los compuestos a base de EPS. Las propiedades mecánicas de estas películas se pueden adaptar controlando el tipo y la concentración del refuerzo, que se puede utilizar en el diseño de diferentes tipos de biomateriales.
7
artículo
Publicado 2018
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Este trabajo se realizó con el apoyo financiero del Consejo Nacional de Ciencia y Tecnología (CONCYTEC) mediante convenio No. 409-2012-CONCYTEC-OAJ, así como por el convenio No. 541-FIDECOM-INNOVATE PERÚ-PIMEN-2015.
8
artículo
Publicado 2025
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El cáncer de cérvix incluye tipos histológicos variados, el carcinoma escamoso y el adenocarcinoma representan el 70% y 25%, respectivamente. El tumor neuroendocrino de cuello uterino es extremadamente raro e infrecuente y representa el 2% de todas las malignidades cervicales invasoras en mujeres de edad media de 45 años. Cabe resaltar que el carcinoma neuroendocrino de células pequeñas es una variante de cáncer de pulmón extrapulmonar y el agente causal son las cepas de alto riesgo de VPH. Presentamos el caso de una mujer de 59 años con diagnóstico de carcinoma neuroendocrino de células pequeñas de cuello uterino tratada con quimioterapia neoadyuvante e histerectomía radical tipo C1. Los estudios anatomopatológicos revelaron adenocarcinoma endocervical in situ positivo para p16 y Ki67 en 90%. Con abordaje realizado la paciente no presenta evidencia de signos de recurrencia...
9
artículo
Publicado 2001
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A packed-bed bioreactor was designed with immobilized cells on a ceramic inert support (instalox seats). The design equatlons, considering an ideal plug-flow tubular bloreactor, were solved with appropiate algorithms installed in Mathcad 7P, obtaining a volume of 10L for the appropiate desing restrictions. It was determinad that for small bioreactors it is not necessary to consider the pattern of axial disperslon and that the isothermic operation is possible for the hlgh degree of retromixing of coolant in the jacket.
10
artículo
Publicado 2001
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A packed-bed bioreactor was designed with immobilized cells on a ceramic inert support (instalox seats). The design equatlons, considering an ideal plug-flow tubular bloreactor, were solved with appropiate algorithms installed in Mathcad 7P, obtaining a volume of 10L for the appropiate desing restrictions. It was determinad that for small bioreactors it is not necessary to consider the pattern of axial disperslon and that the isothermic operation is possible for the hlgh degree of retromixing of coolant in the jacket.
11
artículo
Publicado 2009
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The study is about the construction of a prototype from flotation cell pilot “San Marcos” to pilot level, for develop this the next activities has been performed: confection of planes from machine organs including necessary cuts, preparation of molds for fuse the pieces and other parts, assembly the flotation equipment, Install the cell in the circuits from pilot plant, and prove the suitable functioning for the equipment.
12
artículo
Publicado 2009
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The study is about the construction of a prototype from flotation cell pilot “San Marcos” to pilot level, for develop this the next activities has been performed: confection of planes from machine organs including necessary cuts, preparation of molds for fuse the pieces and other parts, assembly the flotation equipment, Install the cell in the circuits from pilot plant, and prove the suitable functioning for the equipment.
13
artículo
At this Work, we present the first results of the colaboration UNI/HAHN-MEITNER-INSTITUT, obtained in the characterization of high efficiency solar cells (Programme Euro-Joule) with a home made photocurrent spectrometer. First, we show the application of the System to a monocrystalline silicon solar cell (Co. ISOFOTON /Spain). We describe next the results obtained with two types of "Joule"Solar cells: CdS/Cu(In,Ga,)(S,Se)2 and ZnSe/Cu(ln,Ga,)(S,Se)2.
14
artículo
Publicado 2015
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Stem cells application of stem cells raises a revolution in medicine beyond the preceding. This article describes basic information about them, shows the accepted stem cell therapies in clinical practice, mentions some of the amazing research being made for future clinical application in medicine and presents some warnings about unproven stem cell therapies. Finally, some information about confrontation between regulators and patients demanding accelerated authorization for unproven stem cell therapies.
15
artículo
Publicado 2009
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The most recent and astonishing scientific advances have allowed the development of fertilization techniques based on the somatic cell nuclear transfer method. Thanks to this, it has been possible to widen knowledge about embryo cells, maintaining their pluripotentiality and now there are some cell banks available for therapeutic purposes.However, embryo cell manipulation has been the subject of many discussion from the scientific, ethics, and politics point of view, because of many fears generated by the likelihood of manipulating the genetic machinery of a non-differentiated totipotent stem cell.In the last Presidential Elections in the USA, Mr. Barack Obama proimised to strengthen research in this promising field. This promise opens the way for many patients that are awaiing for therapy options that nowadays still are not possible.
16
artículo
Publicado 2009
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The most recent and astonishing scientific advances have allowed the development of fertilization techniques based on the somatic cell nuclear transfer method. Thanks to this, it has been possible to widen knowledge about embryo cells, maintaining their pluripotentiality and now there are some cell banks available for therapeutic purposes.However, embryo cell manipulation has been the subject of many discussion from the scientific, ethics, and politics point of view, because of many fears generated by the likelihood of manipulating the genetic machinery of a non-differentiated totipotent stem cell.In the last Presidential Elections in the USA, Mr. Barack Obama proimised to strengthen research in this promising field. This promise opens the way for many patients that are awaiing for therapy options that nowadays still are not possible.
17
artículo
Publicado 1959
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This case, which seems complete documentation to prove his diagnosis, we demonstrated the possibility of malignant changes and metastasis in giant cell tumor originally benign histology.
18
artículo
Pregnancy is a challenge to the maternal vascular system, requiring systemic adaptation and pronounced local changes in the uterus. The maternal cardiovascular adaptation to pregnancy involves a complex physiologic response to the presence of the growing fetus, including alterations in maternal vascular endothelial cells that contribute to a profound fall in total systemic vascular resistance. The discovery of endothelial progenitor cells has generated considerable interest in the field of vascular biology. These cells can be mobilized into the circulation by growth factors and can then support the health of the vascular endothelium by several mechanisms. These cells arise from a population of circulating mononuclear cells and have the capacity to form new blood vessels and contribute to vascular repair. Diseases of pregnancy, such as preeclampsia, increase the risk of complications and ...
19
artículo
Publicado 2022
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It is reported a squamous cell carcinoma (CCE) located in the vulva of a female 12-year-old crossbreed horse, raised in an extensive system. The mare presented a granulomatous tumour adhered to the vulva, which had progressive growth and affected the entire area of the vulva. The tumour showed a whitish red colour, solid consistency, non-regular surface and ulcerations. The diagnosis was made using the histopathological technique using three fragments and had a compatible result for squamous cell carcinoma.
20
artículo
Publicado 2024
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This work is the result of the observation of the ways in which the cell phone has burst into daily life, transforming the scenario in which we lived a few decades ago. Although we recognize the benefits of this technology, due to its excessive use, worrying effects arise that we intend to evidence from the review of a set of bibliographic sources. These transformations entail risks for the coexistence among its members of the responsible for weaving values, worldview, customs, idiosyncrasies, etc. In this new reality, young people mainly establish virtual and less affective bonds. They isolate themselves from the environment, show disinterest in tangible spaces and are part of manipulable identities. The virtuality is replacing interpersonal communication. Now the definition of man as an eminently social being is fading. Our objective is to make explicit the progressive dependence of ce...
