Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 101
Filtrar
2.
J Transl Med ; 20(1): 569, 2022 12 06.
Artigo em Inglês | MEDLINE | ID: mdl-36474290

RESUMO

BACKGROUND: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is characterized by persistent physical and mental fatigue. The post-COVID-19 condition patients refer physical fatigue and cognitive impairment sequelae. Given the similarity between both conditions, could it be the same pathology with a different precipitating factor? OBJECTIVE: To describe the cognitive impairment, neuropsychiatric symptoms, and general symptomatology in both groups, to find out if it is the same pathology. As well as verify if the affectation of smell is related to cognitive deterioration in patients with post-COVID-19 condition. METHODS: The sample included 42 ME/CFS and 73 post-COVID-19 condition patients. Fatigue, sleep quality, anxiety and depressive symptoms, the frequency and severity of different symptoms, olfactory function and a wide range of cognitive domains were evaluated. RESULTS: Both syndromes are characterized by excessive physical fatigue, sleep problems and myalgia. Sustained attention and processing speed were impaired in 83.3% and 52.4% of ME/CFS patients while in post-COVID-19 condition were impaired in 56.2% and 41.4% of patients, respectively. Statistically significant differences were found in sustained attention and visuospatial ability, being the ME/CFS group who presented the worst performance. Physical problems and mood issues were the main variables correlating with cognitive performance in post-COVID-19 patients, while in ME/CFS it was anxiety symptoms and physical fatigue. CONCLUSIONS: The symptomatology and cognitive patterns were similar in both groups, with greater impairment in ME/CFS. This disease is characterized by greater physical and neuropsychiatric problems compared to post-COVID-19 condition. Likewise, we also propose the relevance of prolonged hyposmia as a possible marker of cognitive deterioration in patients with post-COVID-19.


Assuntos
COVID-19 , Síndrome de Fadiga Crônica , Humanos , Síndrome de Fadiga Crônica/complicações , COVID-19/complicações , Fadiga Mental , Encéfalo
3.
Eur Heart J Qual Care Clin Outcomes ; 9(1): 1-7, 2022 12 13.
Artigo em Inglês | MEDLINE | ID: mdl-36316010

RESUMO

AIMS: To develop quality indicators (QIs) for the evaluation of the prevention and management of cancer therapy-related cardiovascular toxicity. METHODS AND RESULTS: We followed the European Society of Cardiology (ESC) methodology for QI development which comprises (i) identifying the key domains of care for the prevention and management of cancer therapy-related cardiovascular toxicity in patients on cancer treatment, (ii) performing a systematic review of the literature to develop candidate QIs, and (iii) selecting of the final set of QIs using a modified Delphi process. Work was undertaken in parallel with the writing of the 2022 ESC Guidelines on Cardio-Oncology and in collaboration with the European Haematology Association, the European Society for Therapeutic Radiology and Oncology and the International Cardio-Oncology Society. In total, 5 main and 9 secondary QIs were selected across five domains of care: (i) Structural framework, (ii) Baseline cardiovascular risk assessment, (iii) Cancer therapy related cardiovascular toxicity, (iv) Predictors of outcomes, and (v) Monitoring of cardiovascular complications during cancer therapy. CONCLUSION: We present the ESC Cardio-Oncology QIs with their development process and provide an overview of the scientific rationale for their selection. These indicators are aimed at quantifying and improving the adherence to guideline-recommended clinical practice and improving patient outcomes.


Assuntos
Cardiologia , Neoplasias , Humanos , Indicadores de Qualidade em Assistência à Saúde , Oncologia , Neoplasias/terapia
4.
Rev. chil. neuro-psiquiatr ; 60(2): 185-194, jun. 2022.
Artigo em Espanhol | LILACS | ID: biblio-1388433

RESUMO

RESUMEN: El presente trabajo tiene como principal objetivo presentar la teoría polivagal como un modelo bio-comportamental del comportamiento emocional e interpersonal, con la finalidad de identificar ámbitos de contribución de la teoría al estudio de la psicoterapia en torno al estatus clínico de los consultantes, el proceso terapéutico y el cambio. La revisión del modelo neurofisiológico muestra una reconceptualización las relaciones recíprocas entre sistema nervioso autónomo y la emocionalidad en el contexto interpersonal, lo cual permite distinguir condiciones de activación normal y patológica de las estrategias comportamentales defensivas (lucha/huida e inmovilización), así como su inhibición a través del sistema de enganche prosocial. Las investigaciones revisadas muestran evidencia a favor de las hipótesis derivadas del modelo tanto en población normal como clínica. De particular interés clínico resulta el sistema de enganche prosocial, pues habilita la emergencia del comportamiento interpersonal confiable, lo cual resulta ser un elemento pivotal para la psicoterapia por su potencial valor diagnóstico, así como sus efectos sobre el desarrollo y consolidación de la relación terapéutica y los resultados benéficos en el consultante. Finalmente, es posible identificar un cuerpo emergente de estudios de psicoterapia que evalúan la actividad del sistema de enganche prosocial mediante la variabilidad de la frecuencia cardiaca de alta frecuencia, vinculándolo tanto al proceso (p. ej., alianza de trabajo) como al resultado (p. ej., nivel de síntomas), evidenciando el valor de profundizar en esta línea interdisciplinaria de investigación y, eventualmente, incorporar estas mediciones al arsenal clínico de evaluación.


ABSTRACT The present work presents the polivagal theory as a bio-behavioral model of emotional and interpersonal behavior, aiming to identify its theoretical contributions to the study of psychotherapy regarding client's clinical status, therapeutic process as well as change. A review of the model shows a reconceptualization of interactions among autononomic nervous system and emotionality within interpersonal context, allowing for identifying normal and pathological activation of defensive behavioral strategies (figh-or-flight and immobilization), as well as their inhibition through the social engagement system. Empirical research shows evidence in favor of hypotheses derived from the model in normal and clinical populations. In clinical contexts, the social engagement system is of particular interest as it allows the emergence of interpersonal trustworthy behavior, being a cornerstone in psychotherapy due to its potential diagnostic value for clients, the development of the therapeutic relationships, as well as beneficial outcomes. Lastly, a nascent body of psychotherapy studies assessing the social engagement system (through high frequency heart rate variability-) and its relation with the therapeutic process (i.e. working alliance) and outcomes (i.e. symptom level) are identified. The evidence supports the value of further developing this interdisciplinary line of research and, eventually, incorporating these measurements into the clinical assessment arsenal.


Assuntos
Humanos , Psicoterapia , Sistema Nervoso Autônomo , Regulação Emocional , Relações Interpessoais
5.
Int. j. odontostomatol. (Print) ; 14(4): 590-595, dic. 2020. graf
Artigo em Espanhol | LILACS | ID: biblio-1134544

RESUMO

RESUMEN: Las fracturas panfaciales son aquellas que afectan de forma simultánea al tejido óseo de dos o más tercios del rostro. El manejo inicial de estos pacientes es resolver o estabilizar las urgencias médico - quirúrgicas que puedan presentar, debido a que la gran mayoría de estas fracturas están asociadas a traumatismos de alta energía cinética, las que determinan la presencia de lesiones concomitantes que pueden comprometer la vida del paciente. El tratamiento quirúrgico de las fracturas panfaciales puede abarcar desde la intervención quirúrgica inicial de control de daños, estabilización, reducción y fijación quirúrgica de los segmentos fracturados mediante osteosíntesis hasta intervenciones mediatas para la reconstrucción de los tejidos afectados por el traumatismo. Para el tratamiento de las fracturas panfaciales existe una sistemática quirúrgica que tiene por objeto contener y/o minimizar daños agudos y permitir una reducción morfológica y funcional. Reportamos un caso clínico de fractura panfacial cuyo tratamiento siguió esta sistemática terapeútica.


ABSTRACT: Panfacial fractures affect bone tissue in two or more thirds of the face simultaneously. The initial management of these patients is to resolve or stabilize the medical-surgical emergencies that they may present. Most of these fractures are associated to trauma of high kinetic energy, which determine the presence of concomitant inju- ries that can compromise the life of the patient. The surgical treatment of panfacial fractures may include from the initial surgical intervention of damage control, stabilization, reduction and surgical fixation of fractured segments through osteosynthesis, to mediate the reconstruction of tissues affected by the trauma. For the treatment of panfacial fractures there is a surgical approach that aims to contain and/or minimize acute damage and allow for morphological and functional reduction. We report a clinical case of panfacial fracture whose treatment followed this therapeutic approach.


Assuntos
Humanos , Masculino , Adulto Jovem , Fraturas Cranianas , Traumatismos Faciais/cirurgia , Tomografia Computadorizada por Raios X , Ossos Faciais
6.
Clin Radiol ; 75(10): 794.e19-794.e26, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32732094

RESUMO

AIM: To evaluate the response measures in continuing an image-guided intervention service in two tertiary-level musculoskeletal oncology centres during the COVID-19 pandemic. MATERIALS AND METHODS: This study was a retrospective review of all patients undergoing image-guided intervention in the computed tomography (CT) and normal ultrasound (US) rooms from 24 March 2020 to 24 May 2020 (during the COVID-19 pandemic peak) at Royal National Orthopaedic Hospital, London, and Royal Orthopaedic Hospital, Birmingham, UK. Measures were put in place to address air pressures, airflow direction, aerosol generation, and the safe utilisation of existing scanning rooms and work lists for interventional procedures. RESULTS: Three hundred and thirty-one patients (164 at Royal National Orthopaedic Hospital and 167 at Royal Orthopaedic Hospital) underwent image-guided procedures at both sites in the CT and US rooms. At the Royal National Orthopaedic Hospital, 40% of all procedures were performed under general anaesthesia. These consisted of 47 CT biopsies, 7 CT radiofrequency ablations (RFAs), and 12 US biopsies. At the Royal Orthopaedic Hospital, 86% of all procedures were performed under local anaesthetic, with no general anaesthetic procedures. These consisted of 61 CT biopsies and 83 US biopsies. All 256 patients having procedures in the CT room had no post-procedural complications or COVID-19-related symptoms and morbidity on follow-up. CONCLUSION: By adopting a pragmatic approach with meticulous planning, a limited, but fully functional image-guided interventional list can be run without any adverse patient outcomes.


Assuntos
Infecções por Coronavirus/prevenção & controle , Sistema Musculoesquelético/diagnóstico por imagem , Neoplasias/patologia , Pandemias/prevenção & controle , Pneumonia Viral/prevenção & controle , Radiografia Intervencionista/estatística & dados numéricos , Tomografia Computadorizada por Raios X/estatística & dados numéricos , Ultrassonografia de Intervenção/estatística & dados numéricos , Biópsia , COVID-19 , Protocolos Clínicos , Arquitetura Hospitalar , Humanos , Sistema Musculoesquelético/patologia , Neoplasias/diagnóstico por imagem , Equipamento de Proteção Individual , Estudos Retrospectivos , Reino Unido
7.
Clin Transl Oncol ; 22(12): 2286-2292, 2020 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-32419111

RESUMO

INTRODUCTION: The number of patients who have a cardiac implantable electronic device (CIEDs) that undergo a course of radiotherapy is increasing due to the ageing population. The majority of clinical studies only evaluate any CIED malfunction at the end of a course of irradiation or in a case of there being symptoms of possible malfunction. As a result, little data has been collected on CIED status acquired during an active course of irradiation. MATERIAL AND METHODS: We aimed to evaluate the correct functioning of a CIED during a course of radiotherapy. So, a retrospective analysis was made of all patients having CIEDS in a single institution during their course of radiotherapy. All CIEDs were systematically checked before and during the course of radiotherapy according to the risk of device failure and patient dependence. RESULTS: Data was analysed from 56 patients (43 men, 13 women) with a mean age of 78.2 years, of whom 87.5% of the patients carried a pacemaker (PM), the 39% of the patients were PM dependent, and the remaining patients carried an implantable cardioverter-defibrillator (ICD). An observable dose of irradiation was evident in only 10 cases. 69.1% of the CIEDs were checked daily and the remainder were checked weekly. During the radiotherapy course, 82% of the patients did not complain of any cardiological event. The CIED of five patients experienced an increase in the threshold and, in another case, a sudden reduction in the duration of the battery was reported. Another patient with a CIED experienced a cardiac insufficiency episode triggered by a ventricular tachycardia. CONCLUSION: In conclusions, although adverse clinical events from exposure of a CIED to irradiation are rare, they can appear in any group of risk. No dose-dependency was observed on the malfunction of the CIED.


Assuntos
Desfibriladores Implantáveis , Análise de Falha de Equipamento , Neoplasias/radioterapia , Marca-Passo Artificial , Radioterapia Conformacional/métodos , Idoso , Idoso de 80 Anos ou mais , Desfibriladores Implantáveis/estatística & dados numéricos , Feminino , Seguimentos , Cardiopatias/terapia , Humanos , Masculino , Marca-Passo Artificial/estatística & dados numéricos , Dosagem Radioterapêutica , Radioterapia Conformacional/efeitos adversos , Radioterapia de Intensidade Modulada , Estudos Retrospectivos
8.
Sci Adv ; 6(7): eaay2387, 2020 02.
Artigo em Inglês | MEDLINE | ID: mdl-32095526

RESUMO

Cell-derived extracellular matrix (ECM) provides a niche to promote osteogenic differentiation, cell adhesion, survival, and trophic factor secretion. To determine whether osteogenic preconditioning would improve the bone-forming potential of unfractionated bone marrow aspirate (BMA), we perfused cells on ECM-coated scaffolds to generate naïve and preconditioned constructs, respectively. The composition of cells selected from BMA was distinct on each scaffold. Naïve constructs exhibited robust proangiogenic potential in vitro, while preconditioned scaffolds contained more mesenchymal stem/stromal cells (MSCs) and endothelial cells (ECs) and exhibited an osteogenic phenotype. Upon implantation into an orthotopic calvarial defect, BMA-derived ECs were present in vessels in preconditioned implants, resulting in robust perfusion and greater vessel density over the first 14 days compared to naïve implants. After 10 weeks, human ECs and differentiated MSCs were detected in de novo tissues derived from naïve and preconditioned scaffolds. These results demonstrate that bioreactor-based preconditioning augments the bone-forming potential of BMA.


Assuntos
Reatores Biológicos , Medula Óssea/fisiologia , Neovascularização Fisiológica , Osteogênese , Perfusão , Proliferação de Células , Células Cultivadas , Células Endoteliais/citologia , Humanos , Células-Tronco Mesenquimais/citologia , Fenótipo , Próteses e Implantes , Sucção
9.
Clin Transl Oncol ; 22(8): 1418-1422, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31863353

RESUMO

PURPOSE: The aim of the current survey was to describe the functioning of cardio-oncology (C-O) units in Spain. METHODS: All members of the Spanish Society of Cardiology pertaining to scientific communities related to C-O received questionnaires on the existence of specific programs at their institutions. A second, more extensive questionnaire was sent to the centers which reported C-O organization. RESULTS: We identified 56 centers with C-O programs of which 32 (62.5%) replied to the extended questionnaire. 28% of all centers reported having a multidisciplinary unit involving specialists in several areas. More than 80% of the centers developed surveillance protocols locally adapted which included advanced echocardiographic techniques (68%) or troponin (82%). CONCLUSIONS: The number of institutions with C-O programs is still limited but higher than reported in a survey in 2017. Development of multidisciplinary units of C-O should be promoted to improve the cardiovascular health of cancer patients.


Assuntos
Institutos de Câncer/organização & administração , Serviço Hospitalar de Cardiologia/organização & administração , Pesquisas sobre Atenção à Saúde/estatística & dados numéricos , Oncologia/organização & administração , Neoplasias/terapia , Institutos de Câncer/estatística & dados numéricos , Serviço Hospitalar de Cardiologia/estatística & dados numéricos , Humanos , Oncologia/estatística & dados numéricos , Desenvolvimento de Programas , Espanha
11.
J Control Release ; 301: 13-27, 2019 05 10.
Artigo em Inglês | MEDLINE | ID: mdl-30853527

RESUMO

The regeneration of complex tissues and organs remains a major clinical challenge. With a view towards bioprinting such tissues, we developed a new class of pore-forming bioink to spatially and temporally control the presentation of therapeutic genes within bioprinted tissues. By blending sacrificial and stable hydrogels, we were able to produce bioinks whose porosity increased with time following printing. When combined with amphipathic peptide-based plasmid DNA delivery, these bioinks supported enhanced non-viral gene transfer to stem cells in vitro. By modulating the porosity of these bioinks, it was possible to direct either rapid and transient (pore-forming bioinks), or slower and more sustained (solid bioinks) transfection of host or transplanted cells in vivo. To demonstrate the utility of these bioinks for the bioprinting of spatially complex tissues, they were next used to zonally position stem cells and plasmids encoding for either osteogenic (BMP2) or chondrogenic (combination of TGF-ß3, BMP2 and SOX9) genes within networks of 3D printed thermoplastic fibers to produce mechanically reinforced, gene activated constructs. In vivo, these bioprinted tissues supported the development of a vascularised, bony tissue overlaid by a layer of stable cartilage. When combined with multiple-tool biofabrication strategies, these gene activated bioinks can enable the bioprinting of a wide range of spatially complex tissues.


Assuntos
Bioimpressão , Técnicas de Transferência de Genes , Tinta , Engenharia Tecidual , Alginatos , Animais , Proteína Morfogenética Óssea 2/genética , DNA/administração & dosagem , Hidrogéis , Células-Tronco Mesenquimais , Metilcelulose , Plasmídeos , Porosidade , Impressão Tridimensional , Fatores de Transcrição SOX9/genética , Suínos , Fator de Crescimento Transformador beta3/genética
12.
Clin Transl Oncol ; 21(1): 94-105, 2019 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-30627982

RESUMO

One of the most common side effects of cancer treatment is cardiovascular disease, which substantially impacts long-term survivor's prognosis. Cardiotoxicity can be related with either a direct side effect of antitumor therapies or an accelerated development of cardiovascular diseases in the presence of preexisting risk factors. Even though it is widely recognized as an alarming clinical problem, scientific evidence is scarce in the management of these complications in cancer patients. Consequently, current recommendations are based on expert consensus. This Guideline represents SEOM's ongoing commitment to progressing and improving supportive care for cancer patients.


Assuntos
Antineoplásicos/efeitos adversos , Cardiotônicos/uso terapêutico , Cardiotoxicidade/prevenção & controle , Doenças Cardiovasculares/prevenção & controle , Neoplasias/tratamento farmacológico , Guias de Prática Clínica como Assunto/normas , Cardiotoxicidade/diagnóstico , Cardiotoxicidade/etiologia , Doenças Cardiovasculares/induzido quimicamente , Doenças Cardiovasculares/diagnóstico , Ensaios Clínicos como Assunto , Gerenciamento Clínico , Humanos , Prognóstico , Sociedades Médicas
13.
Clin Transl Oncol ; 20(12): 1577-1581, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29796996

RESUMO

BACKGROUND: There is an increasing number of patients with cardiac implantable electronic devices (CIED), either pacemakers or defibrillators, who are receiving a course of radiotherapy. Several guidelines have been published by national societies, but no Spanish national guidelines for management of these patients have been published. More importantly, national clinical practice regarding these patients is not standardised. MATERIALS AND METHODS: Members of the Spanish Breast Cancer Radiation Oncology Group (GEORM in Spanish) were surveyed through an online questionnaire on behalf of the Spanish radiation oncology departments. RESULTS: Only 39.3% of the Spanish radiation oncology departments have policies aimed at CIED carrier patients. Regardless of that, 96.4% of those who responded to the survey refer these patients to their Cardiology department before the start of the course of radiotherapy, and 17.8% of respondents said to manipulate the CIED without any cardiology department direction. A wide range of responses was obtained related to concepts such as "distance from the irradiation field to the CIED" or "safe accumulated doses". CONCLUSIONS: Our results demonstrate the need for national guidelines for CIED patients and the need to promote educational activities addressed to standardise clinical management of these patients in the radiation oncology departments.


Assuntos
Desfibriladores Implantáveis , Marca-Passo Artificial , Radioterapia (Especialidade)/métodos , Radioterapia (Especialidade)/normas , Radioterapia/métodos , Humanos , Neoplasias/radioterapia , Espanha , Inquéritos e Questionários
15.
Clin Transl Oncol ; 20(6): 687-694, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29139040

RESUMO

The increased incidence and decreased mortality of breast cancer have produced an increased number of breast cancer survivors. The type of sequelae and comorbidities that these patients present call for a collaborative follow-up by hospital-based specialized care and primary care. In this document, we present a guideline drafted and agreed among scientific societies whose members care for breast cancer survivors. The purpose of this guideline is to achieve the shared and coordinated follow-up of these patients by specialized care and primary care professionals. In it, we review the health issues derived from the treatments performed, with recommendations about the therapeutic approach to each of them, as well as a proposal for joint follow-up by primary and specialized care.


Assuntos
Assistência ao Convalescente , Neoplasias da Mama/terapia , Sobreviventes de Câncer , Guias de Prática Clínica como Assunto/normas , Sociedades Médicas , Feminino , Humanos , Espanha
16.
Clin Transl Oncol ; 19(10): 1199-1204, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28639051

RESUMO

Pancreatic ductal adenocarcinoma (PDAC) is a tumor with a very poor prognosis. Most of the patients are diagnosed in advanced stages of the disease, and 5-year survival rates in these patients remains <10%. Surgery still remains the only radical treatment option, although only 15-20% of patients are candidates for surgical resection at the time of the diagnosis. Patients who undergo radical surgery still have a limited survival rate, being the average of 23 months. Three clinical trials have shown that adjuvant chemotherapy therapy after surgery may improve survival: CONKO-1, ESPAC-3, and ESPAC-4. Adjuvant therapy is recommended in patients with R0/R1, T1-4/N1-0 tumors and with ECOG 0-1. In patients with ECOG-2, the decision needs to be individualized. Treatment schemes that have demonstrated efficacy include gemcitabine alone, 5-fluorouracil, or the combination of gemcitabine and capecitabine for six months. Prior to adjuvant treatment, the following test are recommended: Complete blood tests, including CA19.9 biomarker; imaging studies to rule out early disease relapse (preferable thorax-abdomen-pelvic CT). Studies that have evaluated the efficacy of radiation therapy in the adjuvant setting have presented conflicting results. Its use should be considered in patients with R1 or R2 tumors or in those with lymph nodes involved.


Assuntos
Carcinoma Ductal Pancreático/terapia , Terapia Neoadjuvante , Neoplasias Pancreáticas/terapia , Quimiorradioterapia Adjuvante , Humanos , Prognóstico
17.
Acta Biomater ; 55: 226-238, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28363788

RESUMO

Controlling the phenotype of mesenchymal stem cells (MSCs) through the delivery of regulatory genes is a promising strategy in tissue engineering (TE). Essential to effective gene delivery is the choice of gene carrier. Non-viral delivery vectors have been extensively used in TE, however their intrinsic effects on MSC differentiation remain poorly understood. The objective of this study was to investigate the influence of three different classes of non-viral gene delivery vectors: (1) cationic polymers (polyethylenimine, PEI), (2) inorganic nanoparticles (nanohydroxyapatite, nHA) and (3) amphipathic peptides (RALA peptide) on modulating stem cell fate after reporter and therapeutic gene delivery. Despite facilitating similar reporter gene transfection efficiencies, these nanoparticle-based vectors had dramatically different effects on MSC viability, cytoskeletal morphology and differentiation. After reporter gene delivery (pGFP or pLUC), the nHA and RALA vectors supported an elongated MSC morphology, actin stress fibre formation and the development of mature focal adhesions, while cells appeared rounded and less tense following PEI transfection. These changes in MSC morphology correlated with enhanced osteogenesis following nHA and RALA transfection and adipogenesis following PEI transfection. When therapeutic genes encoding for transforming growth factor beta 3 (TGF-ß3) and/or bone morphogenic protein 2 (BMP2) were delivered to MSCs, nHA promoted osteogenesis in 2D culture and the development of an endochondral phenotype in 3D culture, while RALA was less osteogenic and appeared to promote a more stable hyaline cartilage-like phenotype. In contrast, PEI failed to induce robust osteogenesis or chondrogenesis of MSCs, despite effective therapeutic protein production. Taken together, these results demonstrate that the differentiation of MSCs through the application of non-viral gene delivery strategies depends not only on the gene delivered, but also on the gene carrier itself. STATEMENT OF SIGNIFICANCE: Nanoparticle-based non-viral gene delivery vectors have been extensively used in regenerative medicine, however their intrinsic effects on mesenchymal stem cell (MSC) differentiation remain poorly understood. This paper demonstrates that different classes of commonly used non-viral vectors are not inert and they have a strong effect on cell morphology, stress fiber formation and gene transcription in MSCs, which in turn modulates their capacity to differentiate towards osteogenic, adipogenic and chondrogenic lineages. These results also point to the need for careful and tissue-specific selection of nanoparticle-based delivery vectors to prevent undesired phenotypic changes and off-target effects when delivering therapeutic genes to damaged or diseased tissues.


Assuntos
Técnicas de Transferência de Genes , Teste de Materiais , Células-Tronco Mesenquimais/metabolismo , Nanopartículas/metabolismo , Animais , Durapatita/química , Durapatita/farmacologia , Células-Tronco Mesenquimais/citologia , Peptídeos/química , Peptídeos/farmacologia , Polietilenoimina/química , Polietilenoimina/farmacologia , Suínos
18.
Clin Transl Oncol ; 19(6): 667-681, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-27995549

RESUMO

The management of patients with pancreatic cancer has advanced over the last few years. We convey a multidisciplinary group of experts in an attempt to stablish practical guidelines for the diagnoses, staging and management of these patients. This paper summarizes the main conclusions of the working group. Patients with suspected pancreatic ductal adenocarcinoma should be rapidly evaluated and referred to high-volume centers. Multidisciplinary supervision is critical for proper diagnoses, staging and to frame a treatment plan. Surgical resection together with chemotherapy offers the highest chance for cure in early stage disease. Patients with advanced disease should be classified in treatment groups to guide systemic treatment. New chemotherapeutic regimens have resulted in improved survival. Symptomatic management is critical in this disease. Enrollment in a clinical trial is, in general, recommended.


Assuntos
Carcinoma Ductal Pancreático/diagnóstico , Carcinoma Ductal Pancreático/terapia , Neoplasias Pancreáticas/diagnóstico , Neoplasias Pancreáticas/terapia , Seguimentos , Humanos , Guias de Prática Clínica como Assunto , Espanha
19.
Int. j. odontostomatol. (Print) ; 10(3): 507-512, dic. 2016. ilus
Artigo em Espanhol | LILACS | ID: biblio-841002

RESUMO

El quiste epidermoide es un quiste de tejido blando de origen ectodérmico que se encuentra con poca frecuencia en la cavidad oral. Clínicamente se caracteriza por ser una lesión asintomática, de larga evolución, recubierta con mucosa normal, y usualmente se diagnostica cuando el aumento de volumen genera molestias en el paciente. El tratamiento varía de acuerdo a su tamaño y localización anatómica. Presentamos el caso de una paciente de 29 años de edad con un quiste epidermoide de gran tamaño, en reloj de arena, del piso de boca. Se describen las características específicas histológicas y clínicas, y se discute la conducta terapéutica seguida.


The epidermoid cyst is a soft tissue cyst of ectodermal origin found infrequently in the oral cavity. Clinically, it is characterized by an asymptomatic lesion, of long evolution, covered with normal mucosa, and is usually diagnosed when the volume increases and generates patient discomfort. Treatment varies according to its size and anatomical location. We report the case of a 29 year old patient with a large, hourglass shaped, epidermoid cyst in the floor of the mouth. Specific histological and clinical characteristics are described and the therapeutic behavior followed is discussed.


Assuntos
Humanos , Feminino , Adulto , Cisto Epidérmico/cirurgia , Doenças da Boca/cirurgia , Soalho Bucal/patologia , Soalho Bucal/cirurgia , Cisto Epidérmico/diagnóstico , Doenças da Boca/diagnóstico
20.
Comunidad salud ; 14(1): 52-60, jun. 2016. ilus
Artigo em Espanhol | LILACS | ID: biblio-828635

RESUMO

El cáncer de mama ocurre cuando las células mamarias crecen sin control, debido a que éstas escapan de los exquisitos controles que regulan la multiplicación celular, ocasionando una proliferación celular sin respuesta a la regulación. La mayoría de los casos de cáncer de mama no tienen una causa identificable, pero aproximadamente del 5 al 10% son causados por mutaciones genéticas hereditarias. A pesar de que se conocen otros genes como causantes del cáncer de mama hereditario, la mayor parte de los estudios que evalúan las estrategias de manejo clínico se han centrado en mujeres con mutaciones en los genes BRCA1 o BRCA2 (BReast CAncer, por sus siglas en inglés). Los individuos portadores de mutaciones en estos genes tienen un aumento significativo del riesgo a lo largo de su vida de padecer esta patología, comparado con el riesgo de la población general.


Breast cancer occurs when breast cells grow out of control, because these exquisite escape controls that regulate cell proliferation, cell proliferation without causing a response to regulation. Most cases of breast cancer have no identifiable cause, but about 5 to 10% are caused by inherited genetic mutations. Although other genes as the cause of hereditary breast cancer, known most studies evaluating clinical management strategies have focused on women with mutations in BRCA1 or BRCA2 genes. Individuals carrying mutations in these genes have a significantly increased risk throughout his life of suffering this disease, compared to the risk of the general population.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA