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1.
Rev. cuba. hematol. inmunol. hemoter ; 36(2): e1133, abr.-jun. 2020.
Article in Spanish | LILACS, CUMED | ID: biblio-1149903

ABSTRACT

La terapia celular basada en células mesenquimales/estromales se aplica ampliamente en la medicina moderna, aun cuando no todos los mecanismos de supervivencia y diferenciación están identificados. Sin embargo, hace pocos años se comenzaron a encontrar elementos extracelulares que generan nuevos paradigmas. En el presente trabajo se explican las principales características y funciones atribuidas a los exosomas, nanopartículas constituidas por microvesículas secretadas por las células con efecto en la matriz extracelular, y su repercusión como alternativa hacia una medicina regenerativa libre de células. Estas estructuras participan de forma notoria y crucial en la comunicación intercelular, lo que ha supuesto un cambio en el concepto de las funciones y el papel que desempeñan estas vesículas en los organismos vivos, en particular en la restauración de tejidos dañados y la respuesta inflamatoria e inmunológica. Se comentan algunos ejemplos de la repercusión biotecnológica de los exosomas en empresas y el mercado biofarmaceútico(AU)


Mesenchymal/stromal cell ;based therapy is widely applied in modern medicine, even though not all survival and differentiation mechanisms are identified. However, a few years ago, extracellular elements began to be found that generate new paradigms. The present work explains the main characteristics and functions attributed to exosomes, nanoparticles made up of microvesicles secreted by with an effect on the extracellular matrix, and their impact as an alternative towards cell-free regenerative medicine. These structures participate, notoriously and critically, in intercellular communication, which has led to a change in the concept of the functions and role that these vesicles play within living organisms, particularly in the restoration of damaged tissues and the inflammatory and immunological response. Some examples of the exosomes' biotechnological impact on companies and the biopharmaceutical market are discussed(AU)


Subject(s)
Humans , Regenerative Medicine/methods , Exosomes/physiology , Mesenchymal Stem Cells/physiology
3.
Rev. cuba. hematol. inmunol. hemoter ; 36(1): e1090, ene.-mar. 2020. tab
Article in Spanish | LILACS, CUMED | ID: biblio-1126545

ABSTRACT

Introducción: El cordón umbilical se ha convertido en un elemento de interés para la medicina regenerativa en los últimos años, pues constituye una fuente importante de células madres y progenitores hematopoyéticos. Objetivo: Caracterizar morfológicamente la sangre del cordón umbilical para terapia regenerativa en recién nacidos del Hospital Universitario Ginecobstétrico Ana Betancourt de Mora. Métodos: Estudio observacional, analítico y transversal realizado en el Centro de Inmunología y Productos Biológicos de Camagüey, entre enero y diciembre de 2017. Se evaluaron 35 muestras de sangre del cordón umbilical obtenidas de recién nacidos, que fueron partos eutócicos y sus madres no tuvieron procesos de enfermedades infecciosas. Resultados: El promedio mayor de células mononucleares correspondió a los linfocitos. En el conteo diferencial los polimorfonucleares neutrófilos ocuparon el primer lugar, seguido de los linfocitos, con medias de 0,50 y 0,46 x 109/L, respectivamente. De las células presentes en el frotis del botón, fueron más frecuente los linfocitos con 0.59 x 109/L; se observó un promedio de monocitos de 0,00-0,07 x 109/L. Conclusiones: La obtención de células mononucleares viables a través de la vena umbilical, constituye una técnica promisoria en las investigaciones biomédicas. Entre las células mononucleares predominaron los linfocitos, tanto en la sangre del cordón umbilical como en el botón celular aislado(AU)


Introduction: In recent years, the umbilical cord has become an element of interest for regenerative medicine, based on its importance as a source of stem cells and hematopoietic progenitors. Objective: To characterize the morphology of umbilical cord blood for regenerative therapy in newborns from Ana Betancourt de Mora Gyneco-obstetric University Hospital. Methods: Observational, analytical and cross-sectional study carried out at the Center of Immunology and Biological Products in Camagüey, between January and December 2017. We evaluated 35 samples of umbilical cord blood obtained from newborns who were eutocic deliveries and whose mothers did not have infectious disease processes. Results: The highest average of mononuclear cells corresponded to lymphocytes. In the differential count, neutrophil polymorphonuclear cells ranked first, followed by lymphocytes, with averages of 0.50x109 and 0.46x109 per liter, respectively. Of the cells present in the button cell smear, lymphocytes were more frequent, with 0.59x109 per L; an average of monocytes was observed, with 0.00-0.07x109 per L was observed. Conclusions: Obtaining viable mononuclear cells through the umbilical vein is a promising technique in biomedical research. Among the mononuclear cells, lymphocytes predominated, both in the cord blood and in the isolated cell button(AU)


Subject(s)
Humans , Male , Female , Cord Blood Stem Cell Transplantation/methods , Regenerative Medicine/methods , Blood Cell Count/standards , Cross-Sectional Studies
4.
Rev. bras. queimaduras ; 19(1): 78-83, 2020.
Article in Portuguese | LILACS | ID: biblio-1362797

ABSTRACT

OBJETIVO: O presente estudo tem como objetivo apresentar a trajetória do desenvolvimento da pele de tilápia como curativo biológico. MÉTODO: Descrição do processo de desenvolvimento da pele de tilápia como curativo biológico, desde a concepção da ideia para utilização no tratamento de queimaduras, até as perspectivas de sua utilização como scaffold em múltiplas especialidades médicas. RESULTADOS: Com o objetivo de oferecer uma alternativa segura, eficaz e de baixo custo para o tratamento de queimaduras, pesquisadores brasileiros desenvolveram um curativo biológico derivado da pele de tilápia. CONCLUSÃO: A pele de tilápia vem demonstrando um notável potencial como curativo biológico no tratamento de queimaduras e na medicina regenerativa.


OBJECTIVE: The present study aims to present the development trajectory of the tilapia skin as a biological dressing. METHODS: To describe the development process of tilapia skin as biological dressing, from the conception to the burn wounds treatment to the perspectives of its use as a scaffold in multiple medical specialties. RESULTS: In order to provide a safe, effective and low-cost alternative for the treatment of burn injuries, Brazilian researchers have recently developed a biological dressing derived from tilapia skin. CONCLUSION: The tilapia skin have been demonstrating the remarkable potential as a biological dressing in burn injuries treatment and in regenerative medicine.


Subject(s)
Humans , Biocompatible Materials/therapeutic use , Biological Dressings/supply & distribution , Burns/therapy , Regenerative Medicine/methods , Cichlids , Tissue Scaffolds
5.
Arq. bras. med. vet. zootec. (Online) ; 71(5): 1571-1581, set.-out. 2019. graf, ilus
Article in English | LILACS, VETINDEX | ID: biblio-1038673

ABSTRACT

There is a growing interest in the study of unspecialized mesenchymal stem cells, for there are still some discussions about their in vitro behavior. Regenerative medicine is a science undergoing improvement which develops treatments as cell therapy using somatic stem cells. In several studies, adipose tissue is presented as a source of multipotent adult cells that has several advantages over other tissue sources. This study aimed to characterize and evaluate the tagging of mesenchymal stem cells from the agoutis adipose tissue (Dasyprocta prymonolopha), with fluorescent intracytoplasmic nanocrystals. Fibroblast cells were observed, plastic adherent, with extended self-renewal, ability to form colonies, multipotency by differentiation into three lineages, population CD90 + and CD45 - expression, which issued high red fluorescence after the tagging with fluorescent nanocrystals by different paths and cryopreserved for future use. It is possible to conclude that mesenchymal stem cells from agouti adipose tissue have biological characteristics and in vitro behavior that demonstrate its potential for use in clinical tests.(AU)


Há um interesse crescente no estudo das células estaminais mesenquimais, não especializadas, pois ainda existem algumas discussões sobre seu comportamento in vitro. A medicina regenerativa é uma ciência em fase de crescimento que desenvolve tratamentos como terapia celular utilizando células estaminais somáticas. Em vários estudos, o tecido adiposo é apresentado como uma fonte de células adultas multipotentes que tem várias vantagens em relação a outras fontes de tecido. Este estudo teve como objetivo caracterizar e avaliar a marcação de células estaminais mesenquimais do tecido adiposo de cutias (Dasyprocta prymnolopha) com nanocristais intracitoplasmáticos fluorescentes. Observaram-se células fibroblásticas, aderentes ao plástico, com autorrenovação prolongada, capacidade de formar colônias, diferenciação em três linhagens, população CD90 + e expressão CD45, que emitiram alta fluorescência vermelha após a marcação com nanocristais fluorescentes por diferentes vias, e criopreservadas para uso futuro. É possível concluir que as células estaminais mesenquimais do tecido adiposo de cutias têm características biológicas e comportamentos in vitro que demonstram seu potencial para uso em testes clínicos.(AU)


Subject(s)
Animals , Adipose Tissue/cytology , Immunophenotyping/veterinary , Regenerative Medicine/methods , Nanoparticles , Mesenchymal Stem Cells , Dasyproctidae/genetics
6.
Rev. cuba. cir ; 57(1): 49-57, ene.-mar. 2018. tab
Article in Spanish | LILACS | ID: biblio-960346

ABSTRACT

Introducción: las fisuras anales son un problema de salud importante en la población cubana, incluso con la supresión de los factores desencadenantes, muchas de ellas tienden a la cronicidad; su evolución es tórpida, y es elevado el riesgo de complicación de las mismas. Objetivo: evaluar la cicatrización de las fisuras anales mediante lisado plaquetario en el Hospital General Docente Comandante Pinares de San Cristóbal. Método: se realizó un estudio cuasi experimental en el servicio de cirugía general del Hospital General Docente Comandante Pinares desde enero 2015 hasta junio 2017. Se incluyeron en el estudio todos los pacientes adultos, de ambos sexos, atendidos por el diagnóstico de fisura anal con inadecuada respuesta al tratamiento convencional y sin otras enfermedades de base que impidieran el uso de la terapia regenerativa. A todos los pacientes se les solicitó el consentimiento informado previa explicación de las características del estudio. Resultados: la hemorroidectomía fue el proceder más frecuente asociado a las fisuras anales. El dolor fue el síntoma predominante antes del tratamiento. La reducción del área de la fisura fue evidente en los tratados con lisado. El efecto final en los pacientes tratados con el método fue positivo. Conclusiones: se comprobó que el lisado plaquetario usado para la cicatrización de la fisura anal crónica fue efectivo con un resultado de satisfacción por parte de los pacientes, con un mínimo de reacciones adversas. Puede representar un futuro promisorio en el tratamiento de esta enfermedad(AU)


Introduction: Anal fissures are an important health problem in the Cuban population, even with the suppression of the triggering factors, many of them tend to chronicity; its evolution is torpid, and their risk for complication is high. Objective: To evaluate the healing of anal fissures by platelet lysate in Comandante Pinares General Teaching Hospital in San Cristóbal. Method: A quasi-experimental study was performed in the general surgery service of Comandante Pinares General Teaching Hospital, from January 2015 to June 2017. All adult patients, of both sexes, were attended upon diagnosis of anal fissure and were included in the study. with inadequate response to conventional treatment and without other underlying diseases that could prevent the use of regenerative therapy. All patients were asked for their informed consent prior explanation of the study characteristics. Results: Hemorrhoidectomy was the most frequent procedure associated with anal fissures. Pain was the predominant symptom before treatment. The reduction in the area of ​​the fissure was evident in those patients treated with the lysate. The final effect in patients treated with the method was positive. Conclusions: The usage of the platelet lysate for the healing of chronic anal fissure proved effective, with a result of patient satisfaction, with a minimum of adverse reactions. It may represent a promising future in the treatment of this disease(AU)


Subject(s)
Humans , Male , Female , Autoantigens/therapeutic use , Precipitating Factors , Regenerative Medicine/methods , Fissure in Ano/diagnosis , Data Collection/statistics & numerical data
7.
Einstein (Säo Paulo) ; 16(4): eRB4587, 2018. graf
Article in English | LILACS | ID: biblio-975099

ABSTRACT

ABSTRACT The biology of stem cells is one of the most dynamic and promising fields of the biological sciences, since it is the basis for the development of organisms. Its biological complexity demands efforts from several lines of research aimed mainly at its therapeutic use. Nanotechnology has been emerging as a new field of study, which shows great potential in the treatment of various diseases. This new area of health has been called "Nanomedicine" or "Bionanotechnology", which can be applied in Medicine by transport and drug delivery systems, robotic tools to be used in diagnostic and surgical processes, nanobiomaterials, gene therapies, nanobiomedical devices, among others. Because stem cells and Nanotechnology are two areas of extremely promising science, a new field of study, called "stem cell Nanotechnology", has gradually emerged. In this, Nanotechnology is used to help the stem cells apply their therapeutic potential in the treatment, cure, and repair of the damaged tissues, in an effective and safe way. In this way, stem cell Nanotechnology has generated great interest, since it may result in significant contributions to Regenerative Medicine and tissue engineering. The present work aims to present the state-of-the-art regarding its therapeutic use in Human Medicine.


RESUMO A biologia das células-tronco é um dos campos mais dinâmicos e promissores das ciências biológicas, pois é a base do desenvolvimento dos organismos. Sua complexidade biológica demanda esforços de diversas linhas de pesquisa, visando principalmente à sua utilização terapêutica. A Nanotecnologia surge como um novo campo de estudo, o qual demonstra grande potencial no que tange ao tratamento de diversas doenças. Esta nova área da saúde vem sendo denominada "Nanomedicina" ou "Bionanotecnologia", a qual pode ser aplicada na Medicina por meio da utilização de sistemas de transporte e liberação de fármacos, ferramentas robóticas a serem utilizadas em processos de diagnóstico e cirurgia, nanobiomateriais, terapias gênicas, dispositivos nanobiomédicos, entre outros. Em razão das células-tronco e a Nanotecnologia serem duas áreas da ciência extremante promissoras, um novo campo de estudo, denominado "Nanotecnologia das células-tronco", surge gradativamente. Neste, a Nanotecnologia é utilizada de forma a auxiliar as células-tronco a exercerem seu potencial terapêutico no tratamento, na cura e na reparação dos tecidos lesionados, de forma eficaz e segura. A Nanotecnologia das células-tronco tem gerado grande interesse, podendo resultar em contribuições significativas na Medicina Regenerativa e na engenharia de tecidos. O presente trabalho teve por objetivo apresentar o estado da arte visando à sua utilização terapêutica na Medicina Humana.


Subject(s)
Humans , Nanotechnology/methods , Multipotent Stem Cells , Regenerative Medicine/methods , Adult Stem Cells , Bone Diseases/therapy , Cardiovascular Diseases/therapy , Tissue Engineering/methods , Nanostructures/therapeutic use , Nanomedicine/methods , Neoplasms/therapy , Nervous System Diseases/therapy
8.
Rev. cuba. hematol. inmunol. hemoter ; 33(4): 97-103, oct.-dic. 2017. ilus
Article in Spanish | LILACS | ID: biblio-960442

ABSTRACT

La extrofia vesical es una anomalía congénita grave del tracto urinario inferior que afecta la vejiga, los huesos pelvianos, la pared abdominal, los genitales externos, el perineo y, en algunos casos, el intestino. Los tratamientos convencionales están basados en técnicas quirúrgicas, para lograr reconstruir la vejiga, los genitales y cerrar el defecto de la pared. Se presenta el caso de una niña de 3 años de edad, en la que el tratamiento quirúrgico se había aplicado en 6 ocasiones sin resultados. Se decidió combinar el tratamiento quirúrgico con la aplicación de medicina regenerativa. Se le aplicó lisado de plaquetas en la pared de la vejiga y los bordes de la pared abdominal a razón de 1 mL semanal, durante 4 semanas. Se logró la regeneración de los tejidos que permitió afrontar los bordes de dichas estructuras y realizar la técnica quirúrgica convencional. Como resultado se logró cierre total de vejiga, uretra y pared abdominal, sin fístulas entre estas estructuras ni al exterior. La utilización del lisado de plaquetas favorece el crecimiento y regeneración de los tejidos que componen el tracto urinario. La cirugía puede ser una solución definitiva, después de haber aplicado los factores de crecimiento plaquetarios, que preparan el tejido en cuanto a calidad y cantidad, favoreciendo el afrontamiento de los bordes, la cicatrización y disminuyendo las complicaciones posquirúrgicas(AU)


Bladder exstrophy is a severe congenital anomaly of lower urinary tract that affects the bladder, pelvic bones, abdominal wall, external genitalia, perineum and in some cases intestine. Conventional treatments are based on surgical techniques, in order to reconstruct bladder, genitals and close wall defect. We present a case of a 3 year old girl, in which surgical treatment was applied 6 times without results. It was decided to combine the surgical treatment with application of regenerative medicine. It was applied platelet lysate in the bladder wall and the edges of the abdominal wall at the rate of 1 mL weekly for 4 weeks, achieving tissue regeneration. It enabled to face the edges of those structures and perform conventional surgical technique. As a result, we achieved a total closure of bladder, urethra and abdominal wall, without fistulas either between these structures or outside. Therefore the use of platelet lysate promotes growth and tissue regeneration comprising the urinary tract, decreasing number of interventions, time exposition structures of the abdominal cavity, and post surgical complications such as fistulas(AU)


Subject(s)
Humans , Female , Child, Preschool , Bladder Exstrophy/surgery , Bladder Exstrophy/therapy , Regenerative Medicine/methods , Platelet Activation/immunology
9.
Rev. Asoc. Odontol. Argent ; 105(3): 123-132, sept. 2017.
Article in Spanish | LILACS | ID: biblio-973107

ABSTRACT

El tratamiento endodóntico convencional en casos de dientes con desarrollo radicular incompleto y periodontitis apical incluye opciones como la cirugía endodóntica o laapexificación mediante el uso de hidróxido de calcio o del compuesto de minerales trióxido. Sin embargo, numerosos ensayos ex vivo e in vivo en modelos animales, así como estudios clínicos en humanos, han demostrado que, luego de una adecuada desinfección y la formación de un coágulo sanguíneo, la posibilidad de obtener la regeneración de los tejidos infectados dentro del espacio del sistema de conductos radiculares –permitiendo a su vez la continuación del desarrollo de la raíz en DDRI con periodontitis apical– es actualmente una realidad con evidencia científicacomprobada. En ese sentido, la combinación de tres antibióticos talescomo metronidazol, ciprofloxacina y minociclina –conocida como pasta triple antibiótica– ha demostrado ser muy efectiva para obtener el nivel de desinfección necesaria. El propósito del presente estudio fue analizar la bibliografía referida al rol de la pasta triple antibiótica en endodoncia regenerativa para el tratamiento de dientes con desarrollo radicular incompleto con periodontitis apical.


Subject(s)
Adolescent , Child, Preschool , Child , Periapical Periodontitis/drug therapy , Regenerative Medicine/instrumentation , Regenerative Medicine/methods , Root Canal Filling Materials/pharmacology , Root Canal Filling Materials/therapeutic use , Tooth Apex/physiology , Anti-Bacterial Agents/classification , Anti-Bacterial Agents/therapeutic use , Drug Combinations , Tooth, Deciduous , Dentition, Permanent
10.
Actual. osteol ; 13(2): 157-176, Mayo - Ago. 2017. ilus
Article in Spanish | LILACS | ID: biblio-1118319

ABSTRACT

Existen numerosas patologías que generan situaciones invalidantes debido a problemas asociados a nivel de defectos óseos. Esto genera, en muchas oportunidades, cuestiones sanitarias de alto impacto. La ingeniería de tejidos óseos pretende generar propuestas novedosas para reparar pérdidas o fracturas óseas, promoviendo regenerar el tejido mediante el implante de matrices biodegradables que puedan actuar como estructuras para la adhesión celular, favoreciendo el crecimiento y la diferenciación hasta formar hueso de novo. El incremento notable de los conocimientos en las áreas biotecnológicas, de síntesis química, así como de biomedicina, permiten el desarrollo de numerosos tipos de matrices de tercera generación, biodegradables y no tóxicas, con características que proponen sean consideradas en la regeneración tisular ósea. Este trabajo intenta resumir los tipos de matrices que mayor impacto han tenido hasta el momento en la medicina regenerativa ósea, mostrando los casos más relevantes de resultados experimentales y clínicos, y propone algunas perspectivas que se deberían considerar para poder aplicarlas a la práctica clínica. Esta es un área que invita a los investigadores a posicionarse en un pensamiento complejo desde el punto de vista científico-filosófico. (AU)


There are several pathologies that generate disability due to complications associated with bone defects. This often generates high impact health troubles. Bone tissue engineering aims to generate novel means to repair bone loss or bone fractures, promoting tissue regeneration through the implantation biodegradables scaffolds, which can act as structures for cell adhesion, that promts cell growth and differentiation for the novo bone formation. The remarkable for the novo bone formation in biotechnology, chemical synthesis, and biomedical knowledge allows the development of numerous types of third generation scaffolds, applied to promote bone tissue regeneration. This brief report aims to review the scaffolds that have had more impact in bone regenerative medicine so far, describing the most relevant experimental and clinical results. This is an area that invites researchers to situate themselves in a complex thought of scientific-philosophical point of view. (AU)


Subject(s)
Humans , Tissue Engineering/methods , Regenerative Medicine/methods , Bone and Bones/metabolism , Bone and Bones/chemistry , Bone Diseases/therapy , Bone Regeneration , Osseointegration , Tissue Engineering/trends , Regenerative Medicine/trends , Fractures, Bone/therapy
11.
Rev. cuba. angiol. cir. vasc ; 18(1): 3-18, ene.-jun. 2017. ilus
Article in Spanish | LILACS | ID: biblio-844802

ABSTRACT

Introducción: La medicina regenerativa se apoya fundamentalmente en la terapia celular, en la administración de factores bioactivos, en la ingeniería de tejidos y en la terapia génica, integra todos estos procederes destinados a la promoción de la regeneración celular. Objetivo: Comunicar los principales resultados de la aplicación de la medicina regenerativa en Cuba en la especialidad de angiología. Métodos: Para la implantación celular se emplearon células mononucleares de la médula ósea y también las movilizadas con Filgrastim a la sangre periférica. Las plaquetas se usaron en forma de plasma rico en plaquetas o de lisado plaquetario. Se incluyeron los pacientes con diferentes enfermedades vasculares atendidos en instituciones del país en el período 2004-2015. Resultados: Con la terapia celular se obtuvo resultados favorables en pacientes con isquemia crítica de miembros inferiores, claudicación intermitente, tromboangeítis obliterante, pie diabético, síndrome posflebítico y linfedema de miembros inferiores. Con el uso de las plaquetas se obtuvieron resultados prometedores en pacientes claudicantes, con pie diabético y úlceras posflebíticas. Conclusiones: El balance realizado al finalizar el 2015 demuestra que el uso de la medicina regenerativa ha sido introducida en 14 de las 15 provincias cubanas. Se han beneficiados con la terapia celular 9 124 pacientes, de ellos 3 741 (41 por ciento) de la especialidad de angiología. Esta terapia resulta de menor costo que los procedimientos convencionales empleados en el tratamiento de las enfermedades vasculares periféricas; evita la amputación y el impacto social que esto representa se cuenta entre sus resultados más importantes


Introduction: Regenerative medicine is fundamentally based on cell therapy, administration of bioactive factors, tissue engineering and gene therapy and integrates all these procedures intended to promote cell regeneration. Objective: To present the main results of application of regenerative medicine in angiology in our country. Method: For cell implantation, mononuclear cells from the bone marrow and also those released with Filgrastim into the peripheral blood were used. Platelets were then used as platelet-rich plasma or platelet lysate. Patients with different vascular disorders, who had been treated in the 2004-2015 period in various domestic institutions, were included in this study. Results: The cell therapy yielded positive results in patients with critical lower limb ischemia, intermittent claudication, thromboangiitis obliterans, diabetic foot, postphlebitic syndrome, and lower limb lymphedema. The use of platelets showed promising results in patients with intermittent claudication, diabetic foot, and postphlebitic ulcers. Conclusions: The assessment made at the end of 2015 shows that regenerative medicine is implemented in 14 of the 15 Cuban provinces. A total number of 9 124 patients, 3 741 (41 percent) of whom are treated by the angiology specialty have benefited from cell therapy. This type of therapy is less costly than the conventional methods used in the treatment of peripheral vascular diseases, and avoidance of amputation and its social impact are the most significant outcomes of this therapy(AU)


Subject(s)
Humans , Peripheral Vascular Diseases/drug therapy , Regenerative Medicine/methods , Stem Cells
12.
Medicina (B.Aires) ; 77(2): 135-142, Apr. 2017. ilus
Article in Spanish | LILACS | ID: biblio-894448

ABSTRACT

Las células madre mesenquimales (MSCs) son células multipotentes con capacidad de auto-renovación, presentes en diferentes tejidos del organismo. En los últimos años se ha avanzado significativamente en su estudio debido a su potencial terapéutico en medicina regenerativa. Las MSCs se caracterizan por migrar selectivamente a sitios de injuria y remodelación y por su capacidad para evadir al sistema inmunitario y colaborar en la reparación tisular mediante la secreción de factores tróficos. Numerosos estudios pre-clínicos y clínicos analizan su potencial efecto terapéutico en la cirrosis hepática con resultados alentadores. Diversas evidencias experimentales sugieren que este efecto podría ser superior si se utilizaran MSCs como vehículo de genes terapéuticos. En este trabajo se revisa el rol de las MSCs en medicina regenerativa y su empleo en estudios clínicos y pre-clínicos, con énfasis en su potencial como vehículo de genes terapéuticos.


Mesenchymal stem cells (MSCs) are multipotent cells with self-renewal capacity which are present in diverse tissues. Recently, significant progresses have been made in the field of MSCs because of its therapeutic potential in regenerative medicine. MSCs selectively migrate toward sites of damage and remodeling, and have the ability to evade the immune system and to promote tissue repair through the production of a number of growth factors and cytokines. Many pre-clinical and clinical studies have been carried out to study its therapeutic effect in liver cirrhosis with promising results. In addition, experimental studies showed that this therapeutic effect can be improved by engineering MSCs to produce therapeutic genes. In this work, the role of MSCs in regenerative medicine and its clinical and pre-clinical applications are reviewed, with an emphasis on its potential as vehicles for therapeutic genes.


Subject(s)
Humans , Mesenchymal Stem Cell Transplantation , Regenerative Medicine/methods , Liver Cirrhosis/therapy , Liver Regeneration
13.
Rev. cuba. hematol. inmunol. hemoter ; 33(1): 1-10, ene.-mar. 2017.
Article in Spanish | LILACS, CUMED | ID: biblio-901071

ABSTRACT

Entre los pilares en que se apoya la Medicina Regenerativa están la terapia celular y la administración de factores bioactivos, fundamentalmente los derivados de las plaquetas. En los últimos años, la aplicación de plaquetas con fines regenerativos ha aportado nuevos conocimientos sobre sus posibilidades terapéuticas y se han obtenido avances prometedores con su empleo. En Cuba, el uso de plaquetas en la regeneración de tejidos se está aplicando con resultados favorables en un grupo significativo de enfermedades o condiciones clínicas y endiferentes especialidades, entre las que se encuentran ortopedia y traumatología, angiología, oftalmología, medicina del deporte.Los resultados obtenidos evidencian los beneficios que este tratamiento puede aportar a partir de un proceder simple, seguro, eficiente y económico(AU)


Among the pillars on which Regenerative Medicine is supported are cell therapy and the administration of bioactive factors, mainly those derived from platelets. In recent years, the application of platelets for regenerative purposes has brought new insights into their therapeutic possibilities and promising advances have been made with their use. In Cuba, the use of platelets in tissue regeneration is being applied with favorable results in a significant group of diseases or clinical conditions and different specialties, among which are orthopedics and traumatology, angiology, ophthalmology, sports medicine. The evidences show the benefits that this treatment can provide, from a simple, safe, efficient and economic procedure(AU)


Subject(s)
Humans , Male , Female , Platelet Transfusion/methods , Regenerative Medicine/methods
14.
Rev. cuba. hematol. inmunol. hemoter ; 33(1): 1-13, ene.-mar. 2017.
Article in Spanish | LILACS, CUMED | ID: biblio-901070

ABSTRACT

La Medicina Regenerativa se apoya fundamentalmente en la terapia celular, en la administración de factores bioactivos, en la ingeniería de tejidos y en la terapia génica. Según su estado evolutivo, las células madre pueden clasificarse en embrionarias y adultas. Recientemente se obtuvieron células con características embrionarias mediante la reprogramación de células adultas que se llamaron células madre pluripotentes inducidas. Se han obtenido importantes avances con la terapia con células madre adultas que tienen notables ventajas sobre las embrionarias, pues su manipulación resulta más simple y se pueden obtener del propio individuo que va a ser tratado. Los resultados obtenidos en Cuba evidencian los beneficios que la terapia celular puede aportar en pacientes sin otras opciones terapéuticas y sobre todo bajo un estricto control científico(AU)


Regenerative Medicine is fundamentally based on cell therapy, administration of bioactive factors, tissue engineering and gene therapy. According to their evolutionary state, stem cells can be classified into embryonics and adults. Recently were obtained cells with embryonic characteristics by reprogramming adult cells and have been called induced pluripotent stem cells. Already have been made significant progress in cell therapy using adult stem cells, which have significant advantages over embryonic cells, because its handling is simpler, and can be obtained from the own individual to be treated. The results obtained in Cuba show the benefits that cell therapy can bring to patients with no other therapeutic options and especially under strict scientific control(AU)


Subject(s)
Humans , Male , Female , Adult Stem Cells/transplantation , Regenerative Medicine/methods
15.
Arq. bras. cardiol ; 107(3): 271-275, Sept. 2016. tab
Article in English | LILACS | ID: lil-796038

ABSTRACT

Abstract Myocardial infarction is the most significant manifestation of ischemic heart disease and is associated with high morbidity and mortality. Novel strategies targeting at regenerating the injured myocardium have been investigated, including gene therapy, cell therapy, and the use of growth factors. Growth factor therapy has aroused interest in cardiovascular medicine because of the regeneration mechanisms induced by these biomolecules, including angiogenesis, extracellular matrix remodeling, cardiomyocyte proliferation, stem-cell recruitment, and others. Together, these mechanisms promote myocardial repair and improvement of the cardiac function. This review aims to address the strategic role of growth factor therapy in cardiac regeneration, considering its innovative and multifactorial character in myocardial repair after ischemic injury. Different issues will be discussed, with emphasis on the regeneration mechanisms as a potential therapeutic resource mediated by growth factors, and the challenges to make these proteins therapeutically viable in the field of cardiology and regenerative medicine.


Resumo O infarto do miocárdio representa a manifestação mais significativa da cardiopatia isquêmica e está associado a elevada morbimortalidade. Novas estratégias vêm sendo investigadas com o intuito de regenerar o miocárdio lesionado, incluindo a terapia gênica, a terapia celular e a utilização de fatores de crescimento. A terapia com fatores de crescimento despertou interesse em medicina cardiovascular, devido aos mecanismos de regeneração induzidos por essas biomoléculas, incluindo angiogênese, remodelamento da matriz extracelular, proliferação de cardiomiócitos e recrutamento de células-tronco, dentre outros. Em conjunto, tais mecanismos promovem a reparação do miocárdio e a melhora da função cardíaca. Esta revisão pretende abordar o papel estratégico da terapia, com fatores de crescimento, para a regeneração cardíaca, considerando seu caráter inovador e multifatorial sobre o reparo do miocárdio após dano isquêmico. Diferentes questões serão discutidas, destacando-se os mecanismos de regeneração como recurso terapêutico potencial mediado por fatores de crescimento e os desafios para tornar essas proteínas terapeuticamente viáveis no âmbito da cardiologia e da medicina regenerativa.


Subject(s)
Humans , Regeneration/physiology , Myocardial Ischemia/physiopathology , Myocardial Ischemia/therapy , Intercellular Signaling Peptides and Proteins/therapeutic use , Regenerative Medicine/methods , Neovascularization, Physiologic/physiology , Myocytes, Cardiac/physiology , Regenerative Medicine/trends , Heart/physiology
16.
Rev. Hosp. Ital. B. Aires (2004) ; 36(3): 124-128, sept. 2016. graf, ilus
Article in Spanish | LILACS | ID: biblio-1147033

ABSTRACT

La Biología sintética llegó para quedarse y expandir los límites de la ciencia. Numerosas técnicas moleculares que están siendo empleadas hoy en muchos laboratorios superaron la ficción para convertirse en una realidad. En este artículo se presentan dos técnicas innovadoras de la Biología sintética, como son la técnica de CRISPR, en especial la aplicación de CRISPR-on en la activación de genes específicos humanos, y el uso de ARN mensajeros sintéticos para la purificación y aislamiento celular. Con una mirada enfocada en la medicina traslacional, las herramientas de la Biología sintética ofrecen un gran potencial terapéutico. (AU)


Synthetic biology came to settle in and break the boundaries of the science. Many molecular techniques overcome the fiction to become reality. This article discusses two innovative techniques, as CRISPR, in particular the application of CRISPR-on which is able to activated particular human genes, and the synthetic RNAs messengers for isolation and purification specific cells. From a gaze focused on translational medicine, both tools offer great therapeutic potential. (AU)


Subject(s)
Humans , RNA, Messenger/isolation & purification , Synthetic Biology/classification , Clustered Regularly Interspaced Short Palindromic Repeats , Regenerative Medicine/methods , Synthetic Biology/methods , Cell- and Tissue-Based Therapy/methods
18.
Int. arch. otorhinolaryngol. (Impr.) ; 19(1): 86-89, Jan-Mar/2015.
Article in English | LILACS | ID: lil-741534

ABSTRACT

Introduction Burning mouth syndrome (BMS) is characterized by a burning sensation in the tongue, palate, lips, or gums of no well-defined etiology. The diagnosis and treatment for primary BMS are controversial. No specific laboratory tests or diagnostic criteria are well established, and the diagnosis is made by excluding all other possible disorders. Objective To review the literature on the main treatment options in idiopathic BMS and compare the best results of the main studies in 15 years. Data Synthesis We conducted a literature review on PubMed/MEDLINE, SciELO, and Cochrane-BIREME of work in the past 15 years, and only selected studies comparing different therapeutic options in idiopathic BMS, with preference for randomized and double-blind controlled studies. Final Comments Topical clonazepam showed good short-term results for the relief of pain, although this was not presented as a definitive cure. Similarly, α-lipoic acid showed good results, but there are few randomized controlled studies that showed the longterm results and complete remission of symptoms. On the other hand, cognitive therapy is reported as a good and lasting therapeutic option with the advantage of not having side effects, and it can be combined with pharmacologic therapy. .


Subject(s)
Humans , Cell Differentiation/drug effects , Hydrogels/pharmacology , Pluripotent Stem Cells/physiology , Stem Cell Niche/drug effects , Alginates , Carbocyanines , Collagen , Glucuronic Acid , Hexuronic Acids , Pluripotent Stem Cells/drug effects , Regenerative Medicine/methods , Spectrum Analysis
20.
Rev. cuba. estomatol ; 52(1): 0-0, ene.-mar. 2015.
Article in Spanish | LILACS | ID: lil-749610

ABSTRACT

Introducción: la medicina regenerativa es un cautivador campo de investigación de las ciencias biomédicas, y constituye una prometedora alternativa terapéutica en expansión para el tratamiento de los defectos óseos esqueletales, incluidos los del complejo craneofacial. Objetivo: realizar una revisión bibliográfica sobre el empleo de la medicina regenerativa en el tratamiento de defectos óseos del macizo craneofacial. Métodos: se realizó una revisión en el periodo comprendido entre junio y julio de 2013. Se evaluaron revistas de impacto de la Web of Sciencies relacionadas con este tema (28 revistas) y 2 revistas cubanas. Se consultaron las bases de datos de sistemas referativos, como MEDLINE, PubMed y SciELO con la utilización de descriptores como craniofacial bone defects, craniofacial regenerative medicine, bone regeneration, bone reconstruction, bone scaffolds y sus contrapartes en español. Se incluyeron artículos en idioma inglés y español y publicaciones de los últimos 5 años, con excepción de 1 de mayor tiempo. Se obtuvieron 115 artículos, el estudio se circunscribió a 51 que enfocaron esta temática de manera más integral. Se revisó un libro. Resultados: al analizar el comportamiento de los artículos sobre la temática de estudio respecto a su representatividad en las diferentes revistas científicas donde fueron publicados, 11,8 por ciento de ellos correspondieron, respectivamente, a las revistas Journal of Oral and Maxillofacial Surgery y The Journal of Craniofacial Surgery. Los restantes artículos estuvieron distribuidos de manera uniforme entre las otras revistas. Conclusiones: todas las publicaciones revisadas coinciden en pronunciar que hemos entrado en una nueva era en la regeneración del hueso bucofacial, donde la mejora de los materiales osteoinductivos, las terapias basadas en CM, entre otros elementos de esta rama de investigación, se pueden utilizar para mejorar y acelerar los resultados clínicos deseables en áreas como el trauma, distracción, defectos craneofaciales, de tamaño crítico y por exéresis de entidades patológicas, atrofia alveolar, osteonecrosis y elevación de la mucosa sinusal maxilar(AU)


Introduction: regenerative medicine is a charming area of research in the biomedical sciences, it constitute a promising therapeutic alternative for expansion in the treatment of skeletal bone defects, including the craniofacial complex. Objective: to review the literature on the use of regenerative medicine in the treatment of craniofacial bone defects. Methods: a review was conducted in the period from June to July 2013. Impact journals from Web of Sciencies related to this topic were evaluated (28 journals) and 2 Cuban magazines. Were consulted databases referativos systems such as MEDLINE, PubMed and SciELO with the use of descriptors such as craniofacial bone defects, craniofacial regenerative medicine, bone regeneration, bone reconstruction, bone scaffolds and its Spanish counterparts. We included articles in English and Spanish and publications of the last five year, except for one. 115 articles were obtained, confined the study to 51 that focused this issue more comprehensively. A book was reviewed. Results: by analyzing the behavior of the articles on the subject of study with respect to their representation in the various scientific journals where they were published, 11.8% of them corresponded, respectively, to the Journal of Oral and Maxillofacial Surgery and The Journal of Craniofacial Surgery. The remaining items were evenly distributed among the other magazines. Conclusions: all these publications agree pronounce that we have entered a new era in orofacial bone regeneration, where improved osteoinductive materials, CM based therapies, among other elements of this branch of research, can be used to improve and accelerate desirable clinical outcomes in areas such as trauma, distraction, craniofacial defects, critical size and excision of pathological atrophy alveolar osteonecrosis and elevated maxillary sinus mucosa(AU)


Subject(s)
Humans , Review Literature as Topic , Craniofacial Abnormalities/therapy , Regenerative Medicine/methods , Tissue Scaffolds/standards , Bone Regeneration , Databases, Bibliographic/statistics & numerical data
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