RESUMO
resumen está disponible en el texto completo
Introduction: The development of recommendations for the treatment of rheumatoid arthritis (RA) in the Cuban context may be one of the ways to achieve better control of this disease. Objective: To reach a consensus and update relevant aspects of conventional and biological RA modifier therapy in Cuba. Methods: 18 specialists from 8 Cuban provinces, experts in RA care, were summoned, according to the years of dedication to the specialty, the conferences on this topic and their publications. The first meeting took place in March 2016 in the provincial hospital of Villa Clara, Cuba, with the participation of all the experts. A review of the literature on conventional and biological therapy previously collected by the participants was developed, and two teams were formed: the first would address everything related to conventional therapy in RA (HRCT) and the other, biological therapy in RA (TBAR). Three questionnaires related to the use of corticosteroids, HRCT and TBAR, were prepared, answered by the participants via email. In a second meeting, held in October 2016 in Havana, the analysis of all the responses provided was carried out. Questions with a response of 90% or more votes were considered as recommendations. Results: The questionnaires were answered by 95% of the participants. 9 recommendations and 1 algorithm were established. The recommendations are as follows: methotrexate is the drug of choice in the treatment of RA after diagnosis; The administration of another conventional drug (DMARDc) (azathioprine, salazosulfapyridine, antimalarials and leflunomide) is recommended in patients with a diagnosis of active RA in whom methotrexate is contraindicated or there is a failure in response - consider the administration of low doses of prednisone or equivalent (<7.5 mg/d) associated with DMARDc in patients with active moderate to severe RA, for the shortest possible time; perform serological control including tests for hepatitis B and C viruses and screening for HIV in all patients diagnosed with RA before starting treatment with DMARDc and biologics; in patients in remission or, at least, with a DAS-28 below 3.2, consideration should be given to withdrawing one of the DMARDs or reducing, to the minimum possible expression, the dose of both disease modifiers; if methotrexate fails, tocilizumab in combination with methotrexate or as monotherapy will be indicated. Conclusions: Aspects related to conventional therapy with methotrexate, azathioprine, salazosulfapyridine, antimalarials and leflunomide were agreed. The value of early diagnosis and immediate initiation of DMARDc therapy and the use of glucocorticoids was analyzed. Treatment with tocilizumab, the only biological available in Cuba against RA, will be administered when there is a failure in the response to conventional therapy and combinations between these drugs. It is recommended to hold educational conferences through the mass media aimed at patientshttp(AU)
Assuntos
Humanos , Artrite Reumatoide/tratamento farmacológico , Terapia Biológica/métodos , Antimaláricos/uso terapêutico , Artrite Reumatoide/terapiaRESUMO
AIMS: This work aimed to identify secondary metabolites from aerial parts of Euphorbia species functional for control of toxigenic Fusarium species responsible of cereal grain rots. METHODS AND RESULTS: Aerial parts of Euphorbia serpens, Euphorbia schickendantzii and Euphorbia collina were sequentially extracted with hexane, ethyl acetate and methanol. The extracts were tested against strains of Fusarium verticillioides and Fusarium graminearum by microdilution tests. The hexane extract of E. collina provided the lowest IC50 s on both fungal species. Further fractionation showed that cycloartenol (CA) and 24-methylenecycloartanol are associated to the moderate inhibitory effect of the hexane extract on fungal growth.Sublethal concentrations of CA and 24MCA blocked deoxynivalenol (DON) and fumonisins production.CA and 24MCA co-applied with potassium sorbate, a food preservative used for Fusarium control, synergized the growth inhibition of fungi. The mixtures reduced mycotoxins accumulation when applied at sublethal concentrations. CONCLUSIONS: CA and 24MCA inhibited both fungal growth and mycotoxins production. This fact is an advantage respect to potassium sorbate which increased the mycotoxins accumulation at sublethal concentrations. SIGNIFICANCE AND IMPACT OF THE STUDY: CA and 24MCA synergized potassium sorbate and their mixtures offer a lower mycotoxigenic risk than potassium sorbate for control of the Fusarium species.
Assuntos
Antifúngicos/farmacologia , Grão Comestível/microbiologia , Euphorbia/química , Extratos Vegetais/farmacologia , Euphorbia/classificação , Conservantes de Alimentos/farmacologia , Fumonisinas/metabolismo , Fusarium/efeitos dos fármacos , Fusarium/crescimento & desenvolvimento , Fusarium/metabolismo , Micotoxinas/metabolismo , Metabolismo SecundárioRESUMO
La vestibulopatía bilateral es poco frecuente, se caracteriza principalmente por inestabilidad al caminar o al estar de pie, visión borrosa inducida por el movimiento u oscilopsia al caminar o al realizar movimientos rápidos de la cabeza o del cuerpo, empeoramiento de la estabilidad en la oscuridad o terrenos irregulares, reducción de los síntomas al estar en condiciones estáticas, ganancia del reflejo vestíbulo-ocular angular reducida de forma bilateral, entre otros. Existen múltiples causas. Dentro de las causas identificables, se describen principalmente medicamentos ototóxicos, meningitis y enfermedad de Ménière. Se presenta el caso de una paciente de 64 años diagnosticada con vestibulopatía bilateral posterior a tratamiento intramuscular con gentamicina por sobreinfección bacteriana cutánea de las manos. La evaluación vestibular complementada con videonistagmografía y prueba de impulso cefálico asistida por video confirman el diagnóstico y se inicia tratamiento con rehabilitación vestibular enfocada en promover la compensación central a través de estrategias de sustitución principalmente; además de habituación y adaptación vestibular, favoreciendo la estabilización de la mirada, mantención del equilibrio, control postural, marcha y reducción de los síntomas.
Bilateral vestibulopathy is infrequent, and it is characterized mostly by unstable walking or when standing, blurred vision induced by movement, or oscillopsia when walking or performing fast movements; worsening of the stability in darkness or uneven ground, but with lack of symptoms in static conditions. Other symptoms may include bilateral reduction of the oculo-vestibular reflex. Among the identifiable causes, there is the use of ototoxic medication, meningitis, Ménière's disease, although it can be idiopathic or have a neurological cause. We hereby describe the case of a 64-year-old woman, diagnosed with bilateral vestibulopathy secondary to intramuscular treatment with gentamicin due to a bacterial hand infection. Vestibular assessment was complemented with video-nystagmography and video head impulse test which confirmed the diagnosis, and therapy was started with vestibular rehabilitation focused on promoting central compensation mainly, through substitution strategies. Also, habituation exercise and vestibular adaptation strategies were used, thus promoting sight stabilization, balance maintenance, postural control, walking, and reduction of the symptoms.
Assuntos
Humanos , Feminino , Pessoa de Meia-Idade , Gentamicinas/efeitos adversos , Vestibulopatia Bilateral/induzido quimicamente , Vestibulopatia Bilateral/reabilitação , Antibacterianos/efeitos adversos , Audiometria , Superinfecção , Eletronistagmografia , Teste do Impulso da Cabeça , Vestibulopatia Bilateral/diagnóstico , Vestibulopatia Bilateral/fisiopatologiaRESUMO
PURPOSE: To evaluate the effect of boost radiotherapy on ipsilateral breast tumor recurrence (IBTR) for ductal carcinoma in situ (DCIS) after breast-conserving surgery and whole breast radiotherapy (WBRT) with or without boost. METHODS AND MATERIALS: Retrospective, multicentre study of 622 patients (624 tumors) diagnosed with pure DCIS from 1993-2011. RESULTS: Most tumors (377/624; 60.4%) received a boost. At a median follow-up of 8.8 years, IBTR occurred in 64 cases (10.3%). A higher percentage of patients with risk factors for IBTR received a boost (p < 0.05). Boost was not associated with lower rates of IBTR than WBRT alone (HR 0.75, 95% CI 0.42-1.35). On the univariate analyses, IBTR was significantly associated with tumor size (11-20 mm, HR 2.32, 95% CI 1.27-4.24; and > 20 mm, HR 2.10, 95% CI 1.14-3.88), re-excision (HR 1.76, 95% CI 1.04-2.96), and tamoxifen (HR 2.03, 95% CI 1.12-3.70). Boost dose > 16 Gy had a protective effect (HR 0.39, 95% CI 0.187-0.824). Multivariate analyses confirmed the independent associations between IBTR and 11-20 mm (p = 0.02) and > 20 mm (p = 0.009) tumours, and re-excision (p = 0.006). On the margin-stratified multivariate analysis, tamoxifen was a poor prognostic factor in the close/positive margin subgroup (HR 4.28 95% CI 1.23-14.88), while the highest boost dose ( > 16 Gy) had a significant positive effect (HR 0.34, 95% CI 0.13-0.86) in the negative margin subgroup. CONCLUSIONS: Radiotherapy boost did not improve the risk of IBTR. Boost radiotherapy was more common in patients with high-risk disease. Tumor size and re-excision were significant independent prognostic factors.
Assuntos
Carcinoma de Mama in situ/radioterapia , Neoplasias da Mama/radioterapia , Recidiva Local de Neoplasia/prevenção & controle , Adulto , Idoso , Idoso de 80 Anos ou mais , Carcinoma de Mama in situ/patologia , Carcinoma de Mama in situ/cirurgia , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Feminino , Humanos , Mastectomia Segmentar , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/epidemiologia , Prognóstico , Radioterapia Adjuvante , Reirradiação , Estudos Retrospectivos , Fatores de RiscoRESUMO
INTRODUCTION: Reversible cerebral vasoconstriction syndrome (RCVS) is a low incidence disability with a multifactorial etiology and a wide array of symptoms. The main symptom is a thunderclap headache, accompanied sometimes with various neurological deficits that can lead to death. RCVS is usually diagnosed through radiological imaging technology. The treatment includes adopting general measures of monitoring, symptomatic management, identifying the etiology and acting on it to avoid recurrence. CASE REPORT: A 71-year-old woman with a history of breast cancer originally treated with tamoxifen. Due to urticaria, the anastrozole management was staggered. She was admitted for aphasia, drowsiness and a thunderclap headache. The patient reported a similar event two weeks prior admission. In brain resonance, there was evidence of small sub-arachnoidal haemorrhage (SAH) of the left parietal temporal convexity and cerebral angiography. As well as documented vasospasm in the posterior parietal region confirming the diagnosis of RCVS plus SAH. During the stay, she presented three events with the same characteristics, requiring intensive monitoring and two therapeutic panangiographies with intra-arterial nimodipine with subsequent resolution of the vessel spasm. The patient remains asymptomatic six months later. CONCLUSION: RCVS is difficult to diagnose given its wide array of symptoms and multifactorial etiology. In this case, RCVS plus SAH is associated with the use of anastrozole. So far there are no reported cases of aromatase inhibitors associated with this pathology and should be reported in the literature for pharmacovigilance.
TITLE: Sindrome de vasoconstriccion cerebral reversible asociado a anastrozol: una causa inusual de alto impacto.Introduccion. El sindrome de vasoconstriccion cerebral reversible (SVCR) es una entidad de baja incidencia, de etiologia multifactorial y amplio espectro de presentacion. El principal sintoma es la cefalea de tipo trueno. Puede estar acompañado de focalizacion neurologica y cursar con desenlaces clinicos variable que incluso pueden llevar a la muerte. El diagnostico es clinico e imaginologico, y el tratamiento incluye adoptar medidas generales de monitorizacion, manejo sintomatico, identificar la etiologia y actuar sobre ella para evitar recurrencia. Caso clinico. Mujer de 71 años con antecedente de cancer de seno, tratada inicialmente con tamoxifeno; por presentar urticaria, se escalono tratamiento con anastrozol. Ingreso por cefalea de tipo trueno, afasia anterior y somnolencia. La paciente refirio un evento similar una semana antes del ingreso. En la resonancia magnetica cerebral evidencio una hemorragia subaracnoidea (HSA) pequeña de la convexidad temporoparietal izquierda, y la panangiografia documento vasoespasmo en la region parietal posterior, lo que confirmo el diagnostico de SVCR mas HSA. Durante el ingreso presento tres eventos de iguales caracteristicas, que requirieron monitorizacion intensiva y dos panangiografias terapeuticas con nimodipino intraarterial, con posterior resolucion del vasoespasmo. Permanece asintomatica seis meses despues. Conclusion. El SVCR constituye un reto diagnostico dada su presentacion variable y su etiologia multifactorial. En este caso, el SVCR mas HSA esta asociado al uso de anastrozol. Hasta el momento no hay casos descritos de inhibidores de la aromatasa asociados a esta patologia, que debe comunicarse para su farmacovigilancia.
Assuntos
Anastrozol/efeitos adversos , Antineoplásicos Hormonais/efeitos adversos , Transtornos Cerebrovasculares/induzido quimicamente , Idoso , Feminino , Humanos , Síndrome , VasoconstriçãoRESUMO
Background/Objective B-cell activating factor (BAFF) plays an important role in the pathogenesis of systemic lupus erythematosus. However, the role of BAFF in lupus nephritis (LN) is not understood. Our aim was to evaluate the expression of BAFF and its three receptors in renal biopsy samples from patients with LN and investigate a relationship with pathological class. Methods We conducted a prospective descriptive study (2011-2014) on 52 kidney biopsy samples from patients with LN. Immunohistochemistry for BAFF, its receptors (transmembrane activator and calcium modulator and cyclophilin ligand interaction (TACI), protein maturation of B cells (BCMA), and BAFF-receptor (BAFF-R)), and CD20 expression was performed. Samples were scored according to the percentage of cells with positive expression. Results In class II LN, BAFF-R and TACI were not expressed, whereas BCMA and BAFF were lowly expressed in the interstitial inflammatory infiltrates. Proliferative class III/IV had elevated BAFF expression in the glomeruli, and TACI was expressed in interstitial inflammatory infiltrates and the glomeruli. Interestingly, the class IV cases with vasculopathy ( n = 4) had endothelial BAFF expression, which was not visible in thrombotic microangiopathy ( n = 4). Class V was characterized by low BAFF expression in interstitial inflammatory infiltrates and by BAFF, TACI, and BCMA expression in the glomeruli. BAFF expression was associated with inflammatory scores and CD20 positive infiltrates, mainly in class IV. Conclusions Expression patterns of BAFF and its receptors differ according to LN class. Our study provides evidence that BAFF could be used as a routine marker in LN biopsies and to determine which patients will benefit from anti-BAFF therapy.
Assuntos
Fator Ativador de Células B/análise , Receptor do Fator Ativador de Células B/análise , Antígeno de Maturação de Linfócitos B/análise , Rim/imunologia , Nefrite Lúpica/imunologia , Proteína Transmembrana Ativadora e Interagente do CAML/análise , Antígenos CD20/análise , Biomarcadores/análise , Biópsia , Humanos , Imuno-Histoquímica , Rim/patologia , Nefrite Lúpica/patologia , Estudos Prospectivos , Índice de Gravidade de DoençaRESUMO
INTRODUCCIÓN: El uso de cannabinoides en diversas condiciones clínicas es hoy un tema de debate. Se ha planteado su uso para el control del glaucoma. Sin embargo, existe controversia sobre su real efectividad y seguridad. MÉTODOS: Para responder esta pregunta utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos cinco revisiones sistemáticas que en conjunto incluyen 3 estudios primarios, todos correspondientes a ensayos aleatorizados. Concluimos que, si bien los cannabinoides podrían disminuir la presión intraocular, lo hacen de forma transitoria y se asocian a efectos adversos frecuentes.
INTRODUCTION: The use of cannabinoids in diverse clinical conditions is today a subject of debate. Its use has been proposed for the control of glaucoma. However, there is controversy about its real effectiveness and safety. METHODS: To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified five systematic reviews including three studies overall, all of them randomized controlled trials. We concluded that although cannabinoids could decrease intraocular pressure, the effect would be transient and associated with frequent adverse effects.
Assuntos
Humanos , Canabinoides/administração & dosagem , Glaucoma/tratamento farmacológico , Pressão Intraocular/efeitos dos fármacos , Canabinoides/efeitos adversos , Ensaios Clínicos Controlados Aleatórios como Assunto , Bases de Dados Factuais , Resultado do TratamentoRESUMO
The objective of this study was to evaluate different concentrations of growth hormone (GH) on the development of bovine preantral follicles cultured included in the ovarian tissue (in situ) on the rates of morphologically normal, viable, primordial and developing follicles, as well as the oocyte and follicle diameter and ultrastructural analysis. Ovarian fragments collected from cows with no cross-breeds defined were cultured in situ for 1 and 7 days in minimal essential medium (α-MEM+) supplemented with different concentrations of recombinant human GH (0, 10, 25, 50 ng/ml). The ovarian fragments non-cultured (control) and cultured were processed for classic histology, mechanical isolation and electron transmission microscopy (MET). The parameters underwent anova (Tukey's and Dunnett's tests) and chi-square test (χ(2) ). After 7 days of culture, the treatment with 50 ng/ml GH showed no differences with fresh control (p > 0.05) and had greater effectiveness than in the 0, 10 and 25 ng/ml GH concentrations of the morphologically normal follicles. Regarding the primordial follicles, a reduction was observed in the 50 ng/ml GH concentration concomitant with the significant increase in developing follicles, differing from both the fresh control and the other GH concentrations tested. In addition, 50 ng/ml GH showed a larger follicle and oocyte diameter when compared to the other treatments cultured. Similar structures were ultrastructurally observed in the control group, 50 ng/ml GH. Follicles cultured in 10 ng/ml GH showed nuclear invagination, vacuoles and lesioned basal membrane. Hence, it is concluded that 50 ng/ml GH is the most effective concentration for the development of preantral follicles cultured in situ.
Assuntos
Bovinos , Hormônio do Crescimento/farmacologia , Folículo Ovariano/efeitos dos fármacos , Animais , Relação Dose-Resposta a Droga , Feminino , Hormônio do Crescimento/administração & dosagem , Folículo Ovariano/ultraestrutura , Fatores de Tempo , Técnicas de Cultura de TecidosRESUMO
This study aimed at assessing the effect of different concentrations of the growth factor similar to insulin 1 (IGF-1) in the development, survival and ultrastructure of the bovine preantral follicles cultured in situ. Fragments of bovine ovarian cortical tissue were cultured during 1 and 7 days in 1 ml of α-MEM(+) , supplemented with different concentrations of human recombinant IGF-1 (0, 30, 70 and 100 ng/ml), in an incubator at 37°C and 5% of CO2 in 24-well plates with total replacement of the medium every 2 days. Non-cultured ovarian fragments (control) and ovarian fragments cultured during 1 and 7 days were processed for classic histology, mechanical isolation and electron transmission microscopy (ETM). Parameters such as normality, viability, activation, development, diameter and ultrastructure were evaluated. All statistical analyses were carried out using sas Version 9.2. The results showed that the percentage of follicles morphologically normal in the IGF-1 30 ng/ml treatment was similar to the fresh control (p > 0.05) both on the day 1 and on the day 7 of in vitro culture. In the viability analysis, the cultured treatments maintained the percentage of viable follicles during the entire culture period (p > 0.05). After 7 days of culture, the IGF-1 30 ng/ml treatment showed higher percentages of developing follicles (48.33%) than those of the fresh control (22.22%) and the cultured treatments (p < 0.05). Also, after 7 days of culture, IGF-1 30 ng/ml presented a higher follicular diameter when compared to the control and other concentrations of IGF-1 tested. Ultrastructurally, the non-cultured control and IGF-1 30 ng/ml, after 7 days of culture, showed conserved oocytes, nuclei and organelles. Hence, it is concluded that IGF-1 30 ng/ml was the most efficient concentration for the development of bovine preantral follicles cultured in vitro.
Assuntos
Fator de Crescimento Insulin-Like I/administração & dosagem , Folículo Ovariano/efeitos dos fármacos , Folículo Ovariano/crescimento & desenvolvimento , Animais , Bovinos , Núcleo Celular/ultraestrutura , Meios de Cultura , Relação Dose-Resposta a Droga , Feminino , Humanos , Oócitos , Organelas/ultraestrutura , Folículo Ovariano/ultraestrutura , Proteínas Recombinantes , Fatores de Tempo , Técnicas de Cultura de TecidosRESUMO
Various methods are available for preservation of vascular grafts for pulmonary artery (PA) replacement. Lyophilization and cryopreservation reduce antigenicity and prevent thrombosis and calcification in vascular grafts, so both methods can be used to obtain vascular bioprostheses. We evaluated the hemodynamic, gasometric, imaging, and macroscopic and microscopic findings produced by PA reconstruction with lyophilized (LyoPA) grafts and cryopreserved (CryoPA) grafts in dogs. Eighteen healthy crossbred adult dogs of both sexes weighing between 18 and 20 kg were used and divided into three groups of six: group I, PA section and reanastomosis; group II, PA resection and reconstruction with LyoPA allograft; group III, PA resection and reconstruction with CryoPA allograft. Dogs were evaluated 4 weeks after surgery, and the status of the graft and vascular anastomosis were examined macroscopically and microscopically. No clinical, radiologic, or blood-gas abnormalities were observed during the study. The mean pulmonary artery pressure (MPAP) in group III increased significantly at the end of the study compared with baseline (P=0.02) and final [P=0.007, two-way repeat-measures analysis of variance (RM ANOVA)] values. Pulmonary vascular resistance of groups II and III increased immediately after reperfusion and also at the end of the study compared to baseline. The increase shown by group III vs group I was significant only if compared with after surgery and study end (P=0.016 and P=0.005, respectively, two-way RM ANOVA). Microscopically, permeability was reduced by ≤75% in group III. In conclusion, substitution of PAs with LyoPA grafts is technically feasible and clinically promising.
Assuntos
Aloenxertos/fisiologia , Implante de Prótese Vascular/métodos , Prótese Vascular , Criopreservação/métodos , Crioprotetores , Liofilização/métodos , Glutaral , Artéria Pulmonar , Aloenxertos/anatomia & histologia , Aloenxertos/cirurgia , Análise de Variância , Animais , Pressão Sanguínea , Prótese Vascular/efeitos adversos , Cães , Feminino , Masculino , Artéria Pulmonar/patologia , Artéria Pulmonar/fisiologia , Circulação Pulmonar , Transplante Homólogo , Resistência VascularRESUMO
Various methods are available for preservation of vascular grafts for pulmonary artery (PA) replacement. Lyophilization and cryopreservation reduce antigenicity and prevent thrombosis and calcification in vascular grafts, so both methods can be used to obtain vascular bioprostheses. We evaluated the hemodynamic, gasometric, imaging, and macroscopic and microscopic findings produced by PA reconstruction with lyophilized (LyoPA) grafts and cryopreserved (CryoPA) grafts in dogs. Eighteen healthy crossbred adult dogs of both sexes weighing between 18 and 20 kg were used and divided into three groups of six: group I, PA section and reanastomosis; group II, PA resection and reconstruction with LyoPA allograft; group III, PA resection and reconstruction with CryoPA allograft. Dogs were evaluated 4 weeks after surgery, and the status of the graft and vascular anastomosis were examined macroscopically and microscopically. No clinical, radiologic, or blood-gas abnormalities were observed during the study. The mean pulmonary artery pressure (MPAP) in group III increased significantly at the end of the study compared with baseline (P=0.02) and final [P=0.007, two-way repeat-measures analysis of variance (RM ANOVA)] values. Pulmonary vascular resistance of groups II and III increased immediately after reperfusion and also at the end of the study compared to baseline. The increase shown by group III vs group I was significant only if compared with after surgery and study end (P=0.016 and P=0.005, respectively, two-way RM ANOVA). Microscopically, permeability was reduced by ≤75% in group III. In conclusion, substitution of PAs with LyoPA grafts is technically feasible and clinically promising.
Assuntos
Animais , Cães , Feminino , Masculino , Aloenxertos/fisiologia , Prótese Vascular , Implante de Prótese Vascular/métodos , Crioprotetores , Criopreservação/métodos , Liofilização/métodos , Glutaral , Artéria Pulmonar , Análise de Variância , Aloenxertos/anatomia & histologia , Aloenxertos/cirurgia , Pressão Sanguínea , Prótese Vascular/efeitos adversos , Circulação Pulmonar , Artéria Pulmonar/patologia , Artéria Pulmonar/fisiologia , Transplante Homólogo , Resistência VascularRESUMO
Dehydration, a condition that characterizes excessive loss of body water, is well known to be associated with acute renal dysfunction; however, it has largely been considered reversible and to be associated with no long-term effects on the kidney. Recently, an epidemic of chronic kidney disease has emerged in Central America in which the major risk factor seems to be recurrent heat-associated dehydration. This has led to studies investigating whether recurrent dehydration may lead to permanent kidney damage. Three major potential mechanisms have been identified, including the effects of vasopressin on the kidney, the activation of the aldose reductase-fructokinase pathway, and the effects of chronic hyperuricemia. The discovery of these pathways has also led to the recognition that mild dehydration may be a risk factor in progression of all types of chronic kidney diseases. Furthermore, there is some evidence that increasing hydration, particularly with water, may actually prevent CKD. Thus, a whole new area of investigation is developing that focuses on the role of water and osmolarity and their influence on kidney function and health.
Assuntos
Desidratação/complicações , Exaustão por Calor/complicações , Insuficiência Renal Crônica/etiologia , Vasopressinas/metabolismo , Aldeído Redutase/metabolismo , América Central , Desidratação/fisiopatologia , Desidratação/terapia , Progressão da Doença , Hidratação , Frutoquinases/metabolismo , Humanos , Hiperuricemia/complicações , Redes e Vias Metabólicas , Concentração Osmolar , Recidiva , Insuficiência Renal Crônica/prevenção & controleRESUMO
De todo el conjunto de problemas que se desarrollan en la infancia, no cabe duda que la escoliosis ocupa un puesto importante debido a sus repercusiones en la edad temprana y adulta. El objetivo del estudio fue evaluar la relación existente entre el sexo, escoliosis y lateralidad manual. La muestra estuvo formada por 2822 participantes, con edad comprendida entre 6 y 12 años, pertenecientes a la provincia de Almería. Se utilizaron dos instrumentos de medida, es decir, inventario de lateralidad manual de Edinburgh y la prueba de Adams, para analizar las variables seleccionadas. No se encontraron diferencias estadísticamente significativas entre las variables lateralidad y sexo (p=0,106) ni entre lateralidad y escoliosis (p=0,673); pero sí entre escoliosis y sexo (p<0,001). Como principales conclusiones debemos señalar la importancia en el desarrollo de adecuados programas de intervención teniendo en cuenta el número obtenido de niños con escoliosis, sobre todo en niñas.
Based on the number of problems that develop during childhood, it is clear that scoliosis has an important place because of its impact and in early adulthood. The main objective of the study was to evaluate the relationship between sex, scoliosis and handedness. The sample consisted of 2822 participants, aged between 8 and 12 years, from the province of Almería. Two instruments were used to measure, Inventary Laterality of Edinburgh and Test de Adams, to analyze the selected variables. No statistically significant differences were found between the variables laterality and sex (p=0.106) or between laterality and scoliosis (p=0.673); significant differences however, were found between scoliosis and sex (p<0.001). Principal conclusions are the importance in the development of appropriate intervention programs bearing in mind the number of children with scoliosis, especially in girls.
Assuntos
Humanos , Masculino , Feminino , Lateralidade Funcional , Mãos , Escoliose/epidemiologia , Prevalência , Escoliose/diagnóstico , Fatores Sexuais , EspanhaRESUMO
Bats are hosts of diverse coronaviruses (CoVs) known to potentially cross the host-species barrier. For analysing coronavirus diversity in a bat species-rich country, a total of 421 anal swabs/faecal samples from Costa Rican bats were screened for CoV RNA-dependent RNA polymerase (RdRp) gene sequences by a pancoronavirus PCR. Six families, 24 genera and 41 species of bats were analysed. The detection rate for CoV was 1%. Individuals (n = 4) from four different species of frugivorous (Artibeus jamaicensis, Carollia perspicillata and Carollia castanea) and nectivorous (Glossophaga soricina) bats were positive for coronavirus-derived nucleic acids. Analysis of 440 nt. RdRp sequences allocated all Costa Rican bat CoVs to the α-CoV group. Several CoVs sequences clustered near previously described CoVs from the same species of bat, but were phylogenetically distant from the human CoV sequences identified to date, suggesting no recent spillover events. The Glossophaga soricina CoV sequence is sufficiently dissimilar (26% homology to the closest known bat CoVs) to represent a unique coronavirus not clustering near other CoVs found in the same bat species so far, implying an even higher CoV diversity than previously suspected.
Assuntos
Quirópteros/virologia , Infecções por Coronavirus/veterinária , Coronavirus/genética , Animais , Teorema de Bayes , Quirópteros/classificação , Doenças Transmissíveis Emergentes/genética , Doenças Transmissíveis Emergentes/veterinária , Doenças Transmissíveis Emergentes/virologia , Coronavirus/enzimologia , Coronavirus/isolamento & purificação , Infecções por Coronavirus/epidemiologia , Infecções por Coronavirus/genética , Infecções por Coronavirus/virologia , Costa Rica/epidemiologia , Fezes/virologia , Variação Genética , Genoma Viral , Humanos , Filogenia , RNA Polimerase Dependente de RNA/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Análise de SequênciaRESUMO
BACKGROUND: Deep brain stimulation, specifically high-frequency stimulation (HFS), is an alternative and promising treatment for intractable epilepsies; however, the optimal targets are still unknown. The thalamic reticular nucleus (TRN) occupies a key position in the modulation of the cortico-thalamic and thalamo-cortical pathways. OBJECTIVE: We determined the efficacy of HFS in the TRN against tonic-clonic generalized seizures (TCGS) and status epilepticus (SE), which were induced by scheduled pentylenetetrazole (PTZ) injections. METHODS: Male Wistar rats were stereotactically implanted and assigned to three experimental groups: Control group, which received only PTZ injections; HFS-TRN group, which received HFS in the left TRN prior to PTZ injections; and HFS-Adj group, which received HFS in the left adjacent nuclei prior to PTZ injections. RESULTS: The HFS-TRN group reported a significant increase in the latency for development of TCGS and SE compared with the HFS-Adj and Control groups (P < 0.009). The number of PTZ-doses required for SE was also significantly increased (P < 0.001). Spectral analysis revealed a significant decrease in the frequency band from 0.5 Hz to 4.5 Hz of the left motor cortex in the HFS-TRN and HFS-Adj groups, compared to the Control group. Conversely, HFS-TRN provoked a significant increase in all frequency bands in the TRN. EEG asynchrony was observed during spike-wave discharges by HFS-TRN. CONCLUSION: These data indicate that HFS-TRN has an anti-epileptogenic effect and is able to modify seizure synchrony and interrupt abnormal EEG recruitment of thalamo-cortical and, indirectly, cortico-thalamic pathways.
Assuntos
Estimulação Encefálica Profunda , Convulsões/fisiopatologia , Convulsões/terapia , Núcleos Talâmicos/fisiopatologia , Animais , Córtex Cerebral/fisiopatologia , Masculino , Pentilenotetrazol , Ratos , Ratos Wistar , Convulsões/induzido quimicamente , Estado Epiléptico/fisiopatologia , Estado Epiléptico/terapiaRESUMO
INTRODUCTION: Information regarding hospital arrival times after acute ischaemic stroke (AIS) has mainly been gathered from countries with specialised stroke units. Little data from emerging nations is available. We aim to identify factors associated with achieving hospital arrival times of less than 1, 3, and 6 hours, and analyse how arrival times are related to functional outcomes after AIS. METHODS: We analysed data from patients with AIS included in the PREMIER study (Primer Registro Mexicano de Isquemia Cerebral) which defined time from symptom onset to hospital arrival. The functional prognosis at 30 days and at 3, 6, and 12 months was evaluated using the modified Rankin Scale. RESULTS: Among 1096 patients with AIS, 61 (6%) arrived in <1 hour, 250 (23%) in <3 hours, and 464 (42%) in <6 hours. The factors associated with very early (<1 hour) arrival were family history of ischemic heart disease and personal history of migraines; in <3 hours: age 40-69 years, family history of hypertension, personal history of dyslipidaemia and ischaemic heart disease, and care in a private hospital; in <6 hours: migraine, previous stroke, ischaemic heart disease, care in a private hospital, and family history of hypertension. Delayed hospital arrival was associated with lacunar stroke and alcoholism. Only 2.4% of patients underwent thrombolysis. Regardless of whether or not thrombolysis was performed, arrival time in <3 hours was associated with lower mortality at 3 and 6 months, and with fewer in-hospital complications. CONCLUSIONS: A high percentage of patients had short hospital arrival times; however, less than 3% underwent thrombolysis. Although many factors were associated with early hospital arrival, it is a priority to identify in-hospital barriers to performing thrombolysis.
Assuntos
Isquemia Encefálica/terapia , Acidente Vascular Cerebral/terapia , Tempo para o Tratamento/estatística & dados numéricos , Adulto , Idoso , Idoso de 80 Anos ou mais , Isquemia Encefálica/mortalidade , Feminino , Humanos , Masculino , México , Pessoa de Meia-Idade , Prognóstico , Sistema de Registros , Acidente Vascular Cerebral/mortalidade , Terapia Trombolítica , Resultado do Tratamento , Adulto JovemRESUMO
La atención sanitaria basada en la evidencia y su aplicación a través de las herramientas disminuye la variabilidad de la práctica clínica. Una de estas herramientas son los procedimientos, las cuales contienen las normas de calidad de proceso que definen las responsabilidades y las acciones que se deben llevar a cabo en una situación dada, orientan hacia la consecución de objetivos que garanticen la satisfacción del paciente como receptor de los cuidados y proporcionan al profesional seguridad y confianza para desarrollar sus actuaciones. Éstas constituyen un instrumento de trabajo preciso para conocer, controlar y mejorar el producto que generamos en forma de servicio y un respaldo institucional, legal y científico. El estudio electrofisiológico cardíaco y la ablación exigen una adecuada preparación protocolizada. Se presenta el procedimiento de actuación de enfermería en el Laboratorio de Electrofisiología del Hospital Universitario Virgen del Rocío.
Evidence based health care and its application by using different tools in order to reduce variability in clinical practice is essential nowadays. One of these tools are procedures. They contain process quality regulations which define responsibilities and actions to be taken, aim at the achievement of objectives to ensure the satisfaction of the patient as recipient of care, and give the professionals safety and confidence for carrying out their interventions. Such procedures are a necessary working tool to know, monitor, and improve the outcomes that we produce as a service and institutional, legal and scientific support. Cardiac electrophysiologic studies and radiofrequency catheter ablation demands an adequate protocolized preparation. Now, it is presented the nursing actuation procedure on Electrophysiologic Studies and Radiofrequency Ablation, in the Electrophysiology and Arrhytmia Unit (Virgen del Rocio University Hospital Seville).
Assuntos
Humanos , Técnicas Eletrofisiológicas Cardíacas/enfermagem , Técnicas Eletrofisiológicas Cardíacas , Assistência ao Paciente , EnfermagemRESUMO
A 96-well plate micromethod was developed to measure 5-n-alkylresorcinols (5nARs) in cereal grains and food derived products. The 5nARs reacted in alkaline alcoholic medium with Fast Blue RR ½ZnCl2 salt to yield coloured azo-derivatives. The highest sensitivity for 5nARs was obtained at 490 nm with 0.025% ethanolic Fast Blue RR and 5% K2CO3. This reaction showed good linearity for olivetol (0.05-0.20 µg). Contents of 5nARs determined in cereal grains and derived products by the new Fast Blue RR micromethod were highly correlated (R(2)=0.9944) with those obtained by a Fast Blue B method currently used. A Bland-Altman analysis indicated a small positive bias near to zero (R(2)=0.0401), suggesting that the methods can be interchangeably used. The new reaction is completed in 15 min and the coloured products are read within the 15 min after completion. The micromethod offers a fast analysis of 5nARs in cereal grains and derived products with low consumption of reagents and solvents.
Assuntos
Colorimetria/métodos , Grão Comestível/química , Extratos Vegetais/química , Resorcinóis/química , Colorimetria/instrumentaçãoRESUMO
BACKGROUND: Parkinson disease (PD) is the second more common neurodegenerative disorder and determines a loss in quality of life, caregiver burden and increased mortality in those affected. AIM: To determine the rates of mortality due to Parkinson disease in Chile. MATERIAL AND METHODS: Data were collected from death certificates between 1997 and 2008. Mortality rates were calculated and the mortality trend was established along the study period, and analyzed by age, sex and geographic región of Chile. RESULTS: There was a steady increase in mortality over the years, particularly since 2001 (r²= 0.85, p < 0.01). The increase in mortality rates was 0.25 per 100.000 habitants/year (r²: 0.89, p < 0.01). Mortality was always higher in men and in those older than 80 years. The highest rate (per 100,000 habitants) in Chile was observed in the región of Valparaíso (2.4) while the lowest was in Antofagasta (0.8) (t = 3.72, p < 0.05). CONCLUSIONS: Mortality associated with PD has increased progressively, consistent with the expected increase in prevalence of the disease in the population.