Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 82
Filtrar
3.
J Investig Allergol Clin Immunol ; 33(2): 95-101, 2023 Apr 18.
Artículo en Inglés | MEDLINE | ID: mdl-36069440

RESUMEN

Suspected or confirmed antibiotic allergy is a frequent clinical circumstance that influences antimicrobial prescription and often leads to the avoidable use of less efficacious and/or more toxic or costly drugs than first-line antimicrobials. Optimizing antimicrobial therapy in patients with antibiotic allergy labels has become one of the priorities of antimicrobial stewardship programs in several countries. These guidelines aim to make recommendations for the systematic approach to patients with suspected or confirmed antibiotic allergy based on current evidence. An expert panel (11 members of various scientific societies) formulated questions about the management of patients with suspected or confirmed antibiotic allergy. A systematic literature review was performed by a medical librarian. The questions were distributed among panel members who selected the most relevant references, summarized the evidence, and formulated graded recommendations when possible. The answers to all the questions were finally reviewed by all panel members. A systematic approach to patients with suspected or confirmed antibiotic allergy was recommended to improve antibiotic selection and, consequently, clinical outcomes. A clinically oriented, 3-category risk-stratification strategy was recommended for patients with suspected antibiotic allergy. Complementary assessments should consider both clinical risk category and preferred antibiotic agent. Empirical therapy recommendations for the most relevant clinical syndromes in patients with suspected or confirmed ß-lactam allergy were formulated, as were recommendations on the implementation and monitoring of the impact of the guidelines. Antimicrobial stewardship programs and allergists should design and implement activities that facilitate the most appropriate use of antibiotics in these patients.


Asunto(s)
Enfermedades Transmisibles , Hipersensibilidad a las Drogas , Hipersensibilidad , Servicio de Farmacia en Hospital , Humanos , Unidades de Cuidados Coronarios , Antibacterianos/efectos adversos , Enfermedades Transmisibles/tratamiento farmacológico , Hipersensibilidad a las Drogas/terapia , Hipersensibilidad a las Drogas/tratamiento farmacológico , Hipersensibilidad/tratamiento farmacológico
4.
Artículo en Inglés | IBECS | ID: ibc-219411

RESUMEN

Suspected or confirmed antibiotic allergy is a frequent clinical circumstance that influences antimicrobial prescription and often leads to the avoidable use of less efficacious and/or more toxic or costly drugs than first-line antimicrobials. Optimizing antimicrobial therapy in patients with antibiotic allergy labels has become one of the priorities of antimicrobial stewardship programs in several countries. These guidelines aim to make recommendations for the systematic approach to patients with suspected or confirmed antibiotic allergy based on current evidence. An expert panel (11 members of various scientific societies) formulated questions about the management of patients with suspected or confirmed antibiotic allergy. A systematic literature review was performed by a medical librarian. The questions were distributed among panel members who selected the most relevant references, summarized the evidence, and formulated graded recommendations when possible. The answers to all the questions were finally reviewed by all panel members. A systematic approach to patients with suspected or confirmed antibiotic allergy was recommended to improve antibiotic selection and, consequently, clinical outcomes. A clinically oriented, 3-category risk-stratification strategy was recommended for patients with suspected antibiotic allergy. Complementary assessments should consider both clinical risk category and preferred antibiotic agent. Empirical therapy recommendations for the most relevant clinical syndromes in patients with suspected or confirmed ß-lactam allergy were formulated, as were recommendations on the implementation and monitoring of the impact of the guidelines. Antimicrobial stewardship programs and allergists should design and implement activities that facilitate the most appropriate use of antibiotics in these patients (AU)


En la práctica clínica, un antecedente de alergia a los antibióticos, confirmada o sospechada, es frecuente y condiciona la selección de antibióticos, requiriendo con frecuencia el uso de fármacos menos eficaces, más tóxicos o más caros que los antibióticos de primera línea. La optimización del uso de antibióticos en pacientes con este antecedente es una de las prioridades de los programas de optimización de uso de antibióticos (PROA) en varios países. Estas guías pretenden formular recomendaciones para evaluar de una manera sistemática a estos pacientes mediante una aproximación basada en la evidencia. Un panel multidisciplinar constituido por alergólogos, infectólogos, farmacéuticos hospitalarios e intensivistas formularon una serie de preguntas sobre el manejo de estos pacientes; una documentalista realizó la revisión bibliográfica. Las preguntas se distribuyeron entre los miembros del grupo de trabajo, quienes seleccionaron las referencias más relevantes y formularon las correspondientes recomendaciones, que fueron revisadas y aprobadas por todos los miembros del grupo. Es necesaria una aproximación sistemática a los pacientes con antecedentes de alergia a antibióticos para optimizar la selección del tratamiento antibiótico y mejorar los resultados clínicos de estos pacientes cuando precisan antibioterapia. El presente documento recomienda una estrategia de estratificación clínica del riesgo en 3 categorías. La recomendación de realizar evaluaciones complementarias se basa en el riesgo clínico y el antibiótico de primera línea necesario. Además, se formulan recomendaciones de tratamiento antibiótico empírico para los principales síndromes infecciosos en pacientes con alergia confirmada o sospechada. Finalmente, se formulan recomendaciones sobre la implementación y monitorización del impacto de las recomendaciones de la guía (AU)


Asunto(s)
Humanos , Hipersensibilidad a las Drogas/diagnóstico , Hipersensibilidad a las Drogas/terapia , Antibacterianos/efectos adversos , Sociedades Médicas , Pruebas Cutáneas , España
5.
J Comp Pathol ; 176: 151-155, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-32359629

RESUMEN

Adipositas cordis (AC) is a rare cardiomyopathy characterized by fatty infiltration of the myocardium without signs of tissue destruction or inflammation. Its diagnosis is challenging and requires histopathological examination. This study describes such cardiomyopathy in two cats that died suddenly. In both cases, anatomopathological examination showed gross lesions indicative of acute heart failure, associated with an increase in subepicardial fat, particularly in the right ventricle. Microscopically, there was an increased amount of subepicardial and intramyocardial adipose tissue in the right ventricular free wall, without signs of cellular degeneration, inflammatory infiltration, necrosis or fibrosis, confirmed by histochemical staining. AC is a rare cardiac pathology, but it should be taken into consideration in feline medicine when a sudden death occurs.


Asunto(s)
Tejido Adiposo/patología , Cardiomiopatías/veterinaria , Enfermedades de los Gatos/patología , Muerte Súbita Cardíaca/veterinaria , Miocardio/patología , Animales , Gatos , Femenino , Masculino
6.
Acta Ortop Mex ; 34(5): 309-312, 2020.
Artículo en Español | MEDLINE | ID: mdl-33634635

RESUMEN

Distal femur pseudoarthrosis also called «distal femur non-union¼ (DFNU) represents a rare complication associated with a fracture caused by high-energy trauma; its treatment is controversial, as there is a wide variety of surgical techniques that can be implemented, from open reduction plus internal fixation with plates, to the use of fixed angle plates combined with bone autograft. We expose the case of a 24-year-old man who shows up for consultation with the history of having presented a left femoral supracondylar fracture with a year of evolution, treated by osteosynthesis of the distal femur with dynamic condylar screws (DCS plate); developed a torpid evolution with severe pain in the distal third of the left thigh and functional limitation, developed a progressive varus deformity of the left thigh that caused a shortening of 3.8 cm of the limb. A focus of pseudoarthrosis was identified, which was surgically removed, the intramedullary canal was recanalized, and a lateral closed wedge osteotomy was performed to correct the angulation and allow reduction. 5.5 mm (three proximal and three distal) hydroxyapatite screws and an external fixator were placed. In addition, a review of the literature focused on the use of external fixation was carried out as a treatment for the pseudoarthrosis of the distal femur.


La seudoartrosis del fémur distal, también llamada «no unión del fémur distal¼ (NUFD), representa una complicación poco frecuente asociada a una fractura causada por un traumatismo de alta energía; su tratamiento es controversial, ya que existe una gran variedad técnicas quirúrgicas que pueden ser implementadas desde la reducción abierta más la fijación interna con placas hasta el uso de placas de ángulo fijo combinadas con autoinjerto óseo. Exponemos el caso de un hombre de 24 años de edad, el cual se presenta a la consulta con el antecedente de haber sufrido una fractura supracondílea femoral izquierda con un año de evolución, tratada mediante una osteosíntesis del fémur distal con tornillos condilares dinámicos (placa DCS); mostró una evolución tórpida con dolor severo en el tercio distal del muslo izquierdo y limitación funcional, desarrolló una deformidad en varo progresiva del muslo izquierdo que causó un acortamiento de 3.8 cm de la extremidad. Se identificó un foco de seudoartrosis, el cual se retiró quirúrgicamente, se recanalizó el canal intramedular y se realizó una osteotomía de cuña cerrada lateral para corregir la angulación y permitir la reducción. Se colocaron tornillos de hidroxiapatita de 5.5 mm (tres proximales y tres distales) y un fijador externo. Además se hizo una revisión de la literatura enfocada en el uso de la fijación externa como tratamiento de la seudoartrosis del fémur distal.


Asunto(s)
Fracturas del Fémur , Seudoartrosis , Adulto , Placas Óseas , Fijadores Externos , Fracturas del Fémur/cirugía , Fémur/cirugía , Fijación de Fractura , Fijación Interna de Fracturas , Humanos , Masculino , Seudoartrosis/cirugía , Resultado del Tratamiento , Adulto Joven
7.
Clin Transl Oncol ; 22(4): 457-467, 2020 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-31240462

RESUMEN

The elderly form a very heterogeneous group in relation to their general health state, degree of dependence, comorbidities, performance status, physical reserve and geriatric situation, so cancer treatment in the older patient remains a therapeutic challenge. The physiological changes associated with aging increase the risk of developing a serious toxicity induced by chemotherapy treatment, as well as other undesirable consequences as hospitalizations, dependence and non-compliance with treatment, that can negatively affect survival, quality of life and treatment efficacy. The use of hematopoietic growth factors and other active supportive interventions in the elderly can help prevent and/or alleviate these toxicities. However, we have little data on the efficacy and tolerance of support treatments in the older patient. The objective of this work is to review the most frequent toxicities of oncological treatments in the elderly and their management.


Asunto(s)
Antineoplásicos/efectos adversos , Terapia Molecular Dirigida/efectos adversos , Neoplasias/tratamiento farmacológico , Anciano , Anemia/terapia , Sistema Cardiovascular/efectos de los fármacos , Diarrea/terapia , Fatiga/terapia , Evaluación Geriátrica , Humanos , Neutropenia/terapia , Cooperación del Paciente
8.
Sci Adv ; 5(7): eaav1235, 2019 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-31281880

RESUMEN

A semiconductor nanowire with strong spin-orbit coupling in proximity to a superconductor is predicted to display Majorana edge states emerging under a properly oriented magnetic field. The experimental investigation of these exotic states requires assessing the one-dimensional (1D) character of the nanowire and understanding the superconducting proximity effect in the presence of a magnetic field. Here, we explore the quasi-ballistic 1D transport regime of an InAs nanowire with Ta contacts. Fine-tuned by means of local gates, the observed plateaus of approximately quantized conductance hide the presence of a localized electron, giving rise to a lurking Coulomb blockade effect and Kondo physics. When Ta becomes superconducting, this local charge causes an unusual, reentrant magnetic field dependence of the supercurrent, which we ascribe to a 0 - π transition. Our results underline the relevant role of unintentional charge localization in the few-channel regime where helical subbands and Majorana quasi-particles are expected to arise.

9.
Acta ortop. mex ; 33(3): 173-181, may.-jun. 2019. tab, graf
Artículo en Español | LILACS | ID: biblio-1248658

RESUMEN

resumen está disponible en el texto completo


Abstract: Introduction: It is essential that orthopaedic resident physicians be highly proficient in all aspects, considering the balance between supply, demand, need and context. Fundamental to identify the capacity and quality installed for their training in Mexico. Material and methods: Observational Study, transverse, non-probabilistic sampling-conglomerates, in two phases. The instrument has 8 domains, 57 variables and 4,867 items. 60 graduate professors of 20 states, 50 hospital sites, 22 university programs. Results: 1,038 years of experience (collective intelligence), 17 years of experience/teacher (01 to 50 years). Identified: acute pathology 30 (2 to 90%), chronic pathology 30 (5 to 96%), patients ˂ 15 years, 10 (3 to 30%), patients between 15 and 65 years, 47 (2 to 78%), patients ˃ 65 years, 20 (2 to 60%), number of beds/seat 20 (2 to 510), number of clinics 3 (1 to 48), number of surgical procedures/headquarters per year at the national level, was 960 (50 to 24,650). The national average per resident doctor is 362 surgeries/year with 1,450 surgical times/year. Conclusions: The needs and resources for the training of physicians specializing in orthopedics/traumatology are highly heterogeneous, so it should be adapted to the epidemiological needs of the region of influence, in an area of epidemiological transition. 62.2% expressed not having or have bad academic and scientific infrastructure at its headquarters, more than 50% without rotation overseas and ˃ 90% without regular scientific production.


Asunto(s)
Humanos , Ortopedia , Procedimientos Ortopédicos , Internado y Residencia , Encuestas y Cuestionarios , México
10.
Rev Clin Esp (Barc) ; 219(4): 184-188, 2019 May.
Artículo en Inglés, Español | MEDLINE | ID: mdl-30651196

RESUMEN

BACKGROUND AND OBJECTIVES: The ω-5 gliadin (ω5G) is considered the main allergen in wheat-dependent exercise-induced anaphylaxis (WDEIA). These patients experience anaphylactic reactions after consuming wheat and performing physical exercise. The aim of our study was to describe the main characteristics of 12 patients with this diagnosis. MATERIAL AND METHODS: A descriptive, retrospective study was conducted by reviewing the medical records of 12 patients diagnosed with ω-5G hypersensitivity. RESULTS: The patients' mean age was 37 years, with 50% men and 50% women. Most of the patients had a history of similar unexamined episodes. The latency period varied from immediate to 150min. The most common symptoms were urticaria (83%), bronchospasms (58%), angio-oedema (42%), hypotension (25%) and gastrointestinal symptoms (16%). The most often involved cofactor was physical exercise. The allergy study was conducted with prick tests and total and specific IgE readings. CONCLUSIONS: WDEIA is a relatively rare but potentially severe food allergy. Understanding this allergy is therefore important for a correct diagnosis.

11.
Clin. transl. oncol. (Print) ; 20(10): 1246-1251, oct. 2018. tab
Artículo en Inglés | IBECS | ID: ibc-173711

RESUMEN

Population aging is associated with greater numbers of older people with cancer. Thanks to treatment advances, not only are more seniors diagnosed with cancer, but there are also more and more older cancer survivors. This upward trend will continue. Given the heterogeneity of aging, managing older patients with cancer poses a significant challenge for Medical Oncology. In Spain, a Geriatric Oncology Task Force has been set up within the framework of the Spanish Society for Medical Oncology (SEOM). With the aim of generating evidence and raising awareness, as well as helping medical oncologists in their training with respect to seniors with cancer, we have put together a series of basic management recommendations for this population. Many of the patients who are assessed in routine clinical practice in Oncology are older. CGA is the basic tool by means of which to evaluate older people with cancer and to understand their needs. Training and the correct use of recommendations regarding treatment for comorbidities and geriatric syndromes, support care, and drug-drug interactions and toxicities, including those of antineoplastic agents, as detailed in this article, will ensure that this population is properly managed


No disponible


Asunto(s)
Humanos , Anciano , Neoplasias/terapia , Evaluación Geriátrica/métodos , Neoplasias/epidemiología , Salud del Anciano , Afecciones Crónicas Múltiples/epidemiología , Polifarmacia , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/prevención & control , Factor Estimulante de Colonias de Granulocitos/uso terapéutico , Eritropoyetina/uso terapéutico
12.
Clin. transl. oncol. (Print) ; 20(8): 1087-1092, ago. 2018. mapas, graf
Artículo en Inglés | IBECS | ID: ibc-173693

RESUMEN

Introduction: Geriatric oncology (GO) is a discipline that focuses on the management of elderly patients with cancer. The Spanish Society of Medical Oncology (SEOM) created a Working group dedicated to geriatric oncology in February 2016. Objectives: The main goal of this study was to describe the current situation in Spain regarding the management of elderly cancer patients through an online survey of medical oncologists. Methods: A descriptive survey was sent to several hospitals by means of the SEOM website. A personal e-mail was also sent to SEOM members. Results: Between March 2016 and April 2017, 154 answers were collected. Only 74 centers (48%) had a geriatrics department and a mere 21 (14%) medical oncology departments had a person dedicated to GO. The vast majority (n = 135; 88%) had the perception that the number of elderly patients with cancer seen in clinical practice had increased. Eighteen (12%) oncologists had specific protocols and geriatric scales were used at 55 (31%) centers. Almost all (92%) claimed to apply special management practices using specific tools. There was agreement that GO afforded certain potential advantages. Finally, 99% of the oncologists surveyed believed it and that training in GO had to be improved. Conclusions: From the nationwide survey promoted by the Spanish Geriatric Oncology Working Group on behalf of SEOM, we conclude that there is currently no defined care structure for elderly cancer patients. There is an increasing perception of the need for training in GO. This survey reflects a reality in which specific needs are perceived


No disponible


Asunto(s)
Humanos , Oncología Médica/tendencias , Geriatría/tendencias , Evaluación Geriátrica/métodos , España , Grupo de Atención al Paciente/tendencias , Encuestas de Atención de la Salud/estadística & datos numéricos
14.
Clin Transl Oncol ; 20(10): 1246-1251, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29633183

RESUMEN

Population aging is associated with greater numbers of older people with cancer. Thanks to treatment advances, not only are more seniors diagnosed with cancer, but there are also more and more older cancer survivors. This upward trend will continue. Given the heterogeneity of aging, managing older patients with cancer poses a significant challenge for Medical Oncology. In Spain, a Geriatric Oncology Task Force has been set up within the framework of the Spanish Society for Medical Oncology (SEOM). With the aim of generating evidence and raising awareness, as well as helping medical oncologists in their training with respect to seniors with cancer, we have put together a series of basic management recommendations for this population. Many of the patients who are assessed in routine clinical practice in Oncology are older. CGA is the basic tool by means of which to evaluate older people with cancer and to understand their needs. Training and the correct use of recommendations regarding treatment for comorbidities and geriatric syndromes, support care, and drug-drug interactions and toxicities, including those of antineoplastic agents, as detailed in this article, will ensure that this population is properly managed.


Asunto(s)
Anciano , Oncología Médica/normas , Neoplasias/terapia , Evaluación Geriátrica/métodos , Humanos , Oncología Médica/métodos
15.
Clin Transl Oncol ; 20(8): 1087-1092, 2018 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-29327240

RESUMEN

INTRODUCTION: Geriatric oncology (GO) is a discipline that focuses on the management of elderly patients with cancer. The Spanish Society of Medical Oncology (SEOM) created a Working group dedicated to geriatric oncology in February 2016. OBJECTIVES: The main goal of this study was to describe the current situation in Spain regarding the management of elderly cancer patients through an online survey of medical oncologists. METHODS: A descriptive survey was sent to several hospitals by means of the SEOM website. A personal e-mail was also sent to SEOM members. RESULTS: Between March 2016 and April 2017, 154 answers were collected. Only 74 centers (48%) had a geriatrics department and a mere 21 (14%) medical oncology departments had a person dedicated to GO. The vast majority (n = 135; 88%) had the perception that the number of elderly patients with cancer seen in clinical practice had increased. Eighteen (12%) oncologists had specific protocols and geriatric scales were used at 55 (31%) centers. Almost all (92%) claimed to apply special management practices using specific tools. There was agreement that GO afforded certain potential advantages. Finally, 99% of the oncologists surveyed believed it and that training in GO had to be improved. CONCLUSIONS: From the nationwide survey promoted by the Spanish Geriatric Oncology Working Group on behalf of SEOM, we conclude that there is currently no defined care structure for elderly cancer patients. There is an increasing perception of the need for training in GO. This survey reflects a reality in which specific needs are perceived.


Asunto(s)
Atención a la Salud/normas , Evaluación Geriátrica , Geriatría/normas , Oncología Médica/normas , Neoplasias/terapia , Oncólogos/normas , Grupo de Atención al Paciente/normas , Anciano , Atención a la Salud/organización & administración , Humanos , España , Encuestas y Cuestionarios
16.
Phys Rev Lett ; 121(25): 257701, 2018 Dec 21.
Artículo en Inglés | MEDLINE | ID: mdl-30608792

RESUMEN

We demonstrate the Josephson effect in a serial double quantum dot defined in a nanowire with epitaxial superconducting leads. The supercurrent stability diagram adopts a honeycomb pattern. We observe sharp discontinuities in the magnitude of the critical current, I_{c}, as a function of dot occupation, related to doublet to singlet ground state transitions. Detuning of the energy levels offers a tuning knob for I_{c}, which attains a maximum at zero detuning. The consistency between experiment and theory indicates that our device is a faithful realization of the two-impurity Anderson model.

17.
Exp Parasitol ; 166: 116-23, 2016 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-27068784

RESUMEN

Congenital transmission of Toxoplasma gondii may occur if the mother gets infected for the first time while pregnant. The risk of mother-to-child transmission depends on the gestation trimester at infection, being lowest in the first and highest in the last. Conversely, fetal damage is frequent and more severe at the beginning of pregnancy. The objective of this study was to evaluate congenital transmission and pathological aspects in the placenta and the fetus using a mouse model of congenital infection of the second gestation third. Forty-five female BALB/c mice were infected intravenously with 2.5-10.0 × 10(6) tachyzoites of the ME49 strain at middle gestation. Samples of maternal spleen and fetal/placental units were taken 72 h later. We determined parasite load and vertical transmission by qPCR, as well as damage macroscopically and by histopathology. With the lowest dose, 18% of the fetuses were infected. Also, 40% of fetuses/litter were altered, while this value was 10% in the control group (P < 0.05). These results are similar to those described in humans in terms of vertical transmission and fetal damage during the second third of gestation. The maternal spleen had 10-1000 times more tachyzoites than the placenta, and the later retained 90-99% of the parasites that could reach the fetus. Nevertheless, we found resorptions, abortions or fetal tissue damage in the presence but also in the absence of parasites. Our data indicate a strong protective effect of maternal organs and the placenta against fetal infection, but extensive damage of the later may led to resorption or abortion without vertical transmission.


Asunto(s)
Feto/parasitología , Transmisión Vertical de Enfermedad Infecciosa , Placenta/parasitología , Complicaciones Parasitarias del Embarazo/parasitología , Toxoplasmosis Animal/congénito , Animales , Proteínas de Unión al ADN/genética , Modelos Animales de Enfermedad , Pérdida del Embrión/parasitología , Femenino , Feto/patología , Hemorragia , Masculino , Ratones , Ratones Endogámicos BALB C , Ratones Endogámicos C57BL , Ratones Noqueados , Necrosis , Carga de Parásitos , Placenta/patología , Embarazo , Complicaciones Parasitarias del Embarazo/patología , Organismos Libres de Patógenos Específicos , Bazo/parasitología , Trombosis , Toxoplasmosis Animal/patología , Toxoplasmosis Animal/transmisión
18.
Artículo en Inglés | MEDLINE | ID: mdl-26382456

RESUMEN

We investigate the role of migration patterns on the spread of epidemics in complex networks. We enhance the SIS-diffusion model on metapopulations to a nonlinear diffusion. Specifically, individuals move randomly over the network but at a rate depending on the population of the departure patch. In the absence of epidemics, the migration-driven equilibrium is described by quantifying the total number of individuals living in heavily or lightly populated areas. Our analytical approach reveals that strengthening the migration from populous areas contains the infection at the early stage of the epidemic. Moreover, depending on the exponent of the nonlinear diffusion rate, epidemic outbreaks do not always occur in the most populated areas as one might expect.


Asunto(s)
Epidemias , Migración Humana , Modelos Biológicos , Difusión , Dinámicas no Lineales , Densidad de Población , Tiempo
19.
Mucosal Immunol ; 5(5): 524-34, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22549744

RESUMEN

The lung is colonized by commensal bacteria, some of which are associated with asthma exacerbations. Using the intranasal house-dust mite-sensitized mouse model of allergic airway disease, we show an imbalance in novel antibacterial pathways that culminates in a reduction in neutrophil recruitment to the airspaces and leads to bacterial invasion and dissemination. The expression of TREM (Triggering Receptor Expressed on Myeloid cells)-1 that amplifies Toll-like receptor (TLR) signaling and TREM-2 that inhibits this process is reversed. Furthermore, endogenous TLR inhibitors (A20, Tollip, SOCS1, and IRAK-M) and proteins involved in receptor recycling (TRIAD3) are raised. Consequently, the production of neutrophil chemoattractants is reduced. Intranasal administration of either chemokine restores the ability to recruit neutrophils, which prevents bacterial invasion. A background of allergic airway disease therefore exacerbates bacterial infection by altering key antibacterial innate immune pathways that are amenable to therapeutic intervention.


Asunto(s)
Pulmón/inmunología , Neutrófilos/inmunología , Infecciones Neumocócicas/inmunología , Hipersensibilidad Respiratoria/inmunología , Streptococcus pneumoniae/inmunología , Animales , Antígenos Dermatofagoides/inmunología , Movimiento Celular , Células Cultivadas , Modelos Animales de Enfermedad , Femenino , Regulación de la Expresión Génica , Humanos , Inmunidad Innata , Pulmón/microbiología , Glicoproteínas de Membrana/genética , Glicoproteínas de Membrana/metabolismo , Ratones , Ratones Endogámicos BALB C , Neutrófilos/microbiología , Infecciones Neumocócicas/complicaciones , Pyroglyphidae/inmunología , Receptores Inmunológicos/genética , Receptores Inmunológicos/metabolismo , Hipersensibilidad Respiratoria/complicaciones , Transducción de Señal , Receptores Toll-Like/metabolismo , Receptor Activador Expresado en Células Mieloides 1
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...