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1.
J Abdom Wall Surg ; 2: 10923, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38312411

RESUMEN

Background: Diastasis recti (DR) is characterized by separation of both rectus muscles and protrusion of the median bulging, but besides median bulging DR can also entail global abdominal bulging. On other note, DR classification is based on the width of divarication, but measurement values are different at rest and at effort due to muscle contraction. Aim of the study is to provide additional features concerning the type of bulging and the width of divarication. Methods: Findings were retrospectively drawn from the data prospectively collected in the records of a continuous cohort of 105 patients (89 females, 16 males) referred for diastasis and concomitant ventral hernia repair. Results: There was a median bulging alone in 45 (42.9%) cases, a global bulging alone in 18 (17.1%) cases, both types combined in 37 (35.2%) cases and no bulging in 5 (4.8%). On 55 patients with a global bulging, 51 were females. Tape measurements values of DR width were closer to the values measured on the CT scan at leg raise than at rest. The differences were significant at rest as well as at leg raise. Though the difference at rest was highly significant (p = 0.000), the difference at effort was not far from being not significant (p = 0.049). Conclusion: Besides median bulging, presence or absence of the global bulging should be included in DR assessment. The difference between width of divarication at rest and on exertion raises the question of which value should be used for DR classification. The question is worth being debated.

2.
J Palliat Care ; : 8258597221086767, 2022 Mar 16.
Artículo en Inglés | MEDLINE | ID: mdl-35293818

RESUMEN

OBJECTIVES: Virtual reality (VR) opens a variety of therapeutic options to improve symptom burden in patients with advanced disease. Until to date, only few studies have evaluated the use of VR therapy in the context of palliative care. This case series aims to evaluate the feasibility and acceptability of VR therapy in a population of palliative care patients. METHODS: In this single-site case series, we report on six palliative care patients undergoing VR therapy. The VR therapy consisted of a one-time session ranging between 20 to 60 minutes depending on the patient's needs and the content chosen for the VR sessions. A semi-structured survey was conducted and the Edmonton Symptom Assessment System (ESAS) and the Distress Thermometer were performed pre- and post-intervention. RESULTS: Overall, VR therapy was well accepted by all patients. Five out of six patients reported having appreciated VR therapy. There were individual differences of perceived effects using VR therapy. The semi-structured survey revealed that some patients felt a temporary detachment from their body and that patients were able to experience the VR session as a break from omnipresent worries and the hospital environment ("I completely forgot where I am"). There was a considerable reduction in the total ESAS score post-treatment (T0 ESASTot = 27.2; T1 ESASTot = 18.8) and a slightly reduction in distress (T0 DTTot = 4.4; T1 DTTot = 3.8). However, two patients were more tired after the intervention.Significance of Results: Our preliminary results demonstrate that VR therapy is acceptable, feasible and safe for use within a palliative care population and appears to be a viable treatment option. Clinical trials are both warranted and necessary to confirm any therapeutic effects of VR therapy, as is the need to tailor VR systems better for use in palliative care settings.

3.
ESMO Open ; 6(3): 100147, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33984671

RESUMEN

BACKGROUND: Integration of specialist palliative care (PC) into standard oncology care is recommended. This study investigated how integration at the Cantonal Hospital St. Gallen (KSSG) was manifested 10 years after initial accreditation as a European Society for Medical Oncology (ESMO) Designated Center (ESMO-DC) of Integrated Oncology and Palliative Care. METHODS: A chart review covering the years 2006-2009 and 2016 was carried out in patients with an incurable malignancy receiving PC. Visual graphic analysis was utilized to identify patterns of integration of PC into oncology based on the number and nature of medical consultations recorded for both specialties. A follow-up cohort collected 10 years later was analyzed and changes in patterns of integrating specialist PC into oncology were compared. RESULTS: Three hundred and forty-five patients from 2006 to 2009 and 64 patients from 2016 were included into analyses. Four distinct patterns were identified using visual graphic analysis. The 'specialist PC-led pattern' (44.9%) and the 'oncology-led pattern' (20.3%) represent disciplines that took primary responsibility for managing patients, with occasional and limited involvement from other disciplines. Patients in the 'concurrent integrated care pattern' (18.3%) had medical consultations that frequently bounced between specialist PC and oncology. In the 'segmented integrated care pattern' (16.5%), patients had sequences of continuous consultations provided by one discipline before alternating to a stretch of consultations provided by the other specialty. In the 2016 follow-up, while the 'oncology-led pattern' occurred significantly less frequently relative to the 'specialist PC-led pattern' and the 'segmented integrated care pattern', the 'concurrent integrated care pattern' emerged more frequently when compared with the 2006-2009 follow-up. CONCLUSION: The 'specialist PC-led pattern' was the most prominent pattern in this data. The 2016 follow-up showed that a growing number of patients received a collaborative pattern of care, indicating that integration of specialist PC into standard oncology can manifest as either segmented or concurrent care pathways. Our data suggest a closer, more dynamic and flexible collaboration between oncology and specialist PC early in the disease course of patients with advanced cancer and concurrent with active treatment.


Asunto(s)
Enfermería de Cuidados Paliativos al Final de la Vida , Neoplasias , Estudios de Cohortes , Humanos , Oncología Médica , Neoplasias/terapia , Cuidados Paliativos
4.
Rev. osteoporos. metab. miner. (Internet) ; 10(2): 63-70, abr.-jun. 2018. tab, graf, maps
Artículo en Español | IBECS | ID: ibc-178599

RESUMEN

Objetivos: Conocer la incidencia de fracturas de cadera en Ecuador en el 2016, determinando si hubo variaciones por región geográfica, residencia o estacionalidad. Materiales y métodos: Estudio epidemiológico, descriptivo y retrospectivo. Se utilizó el Anuario de Egresos Hospitalarios de Ecuador para determinar el número de personas de 60 ó más años hospitalizadas con fractura de cadera desde el 1 de enero hasta el 31 de diciembre de 2016. Para calcular la incidencia por 100.000 habitantes/año se utilizó como denominador la proyección poblacional ecuatoriana de la Comisión Económica para América Latina y el Caribe (CEPAL) para el año 2016. Se calculó la incidencia estandarizada por edad por el método directo usando 2 poblaciones de referencia: 1) la de 60 ó más años para América Latina elaboradas por el Centro Latinoamericano y Caribeño de Demografía (CELADE) en 2016; y 2) con la población de Ecuador del año 2010. Resultados: Un total de 2.054 personas fueron hospitalizadas con diagnóstico de fractura de cadera (1.470 mujeres y 584 hombres) en el 2016. La incidencia anual cruda fue de 123 casos por 100.000 habitantes/año (74,6 por 100.000 hombres/año y 165,8 por 100.000 mujeres/año). La incidencia ajustada por edad aumentó exponencialmente con la edad en ambos sexos, y en mayor magnitud en las mujeres. La incidencia estandarizada con la población de América Latina fue de 165,4 y 80,1 por 100.000/año, en mujeres y hombres respectivamente. La mortalidad intrahospitalaria fue 5,1% y 3,8% en mujeres y hombres, respectivamente. Conclusiones: La incidencia de fracturas de cadera es mayor en mujeres que en hombres, existiendo un aumento exponencial con la edad, siendo más evidente después de los 80 años. No hubo diferencias por región geográfica. En comparación con países desarrollados y otros países de América Latina la incidencia de fracturas de cadera fue más baja en Ecuador


Objectives: To ascertain the incidence of hip fractures in Ecuador in 2016, to determine whether there were variations according to geographic region, residence or season of the year. Materials and methods: Epidemiological, descriptive and retrospective study. The Hospital Discharges Yearbook of Ecuador was used to determine the number of people aged 60 or more hospitalized for hip fracture from January 1 to December 31, 2016. To calculate the incidence per 100,000 inhabitants/year, the Ecuadorian population projection of the Economic Commission for Latin America and the Caribbean (CEPAL) was used as a denominator for the year 2016. The incidence standardized by age was calculated by the direct method using 2 reference populations: 1) the one of 60 or more years for America Latina made by the Latin American and Caribbean Demographic Center (CELADE) in 2016; 2) with the population of Ecuador in 2010. Results: In total, 2,054 people were hospitalized with hip fracture diagnosis (1,470 women and 584 men) in 2016. The crude annual incidence was 123 cases per 100,000 inhabitants/year (74.6 per 100,000 men/year and 165.8 per 100,000 women/year). The age-adjusted incidence increased exponentially with age in both sexes. It was greater in women. The standardized incidence with with the population of Latin America was 165.4 and 80.1 per 100,000/year, in women and men respectively. In-hospital mortality was 5.1% and 3.8% in women and men, respectively. Conclusions: The incidence of hip fractures is greater in women than in men, there being an exponential increase with age, more evident after 80 years. There were no differences by geographical region. In comparison with developed countries and other Latin America countries, incidence of hip fractures was lowest in Ecuador


Asunto(s)
Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años , Fracturas de Cadera/epidemiología , Análisis Espacial , Estudios Retrospectivos , Estaciones del Año , Ecuador/epidemiología
5.
Acta Neurol Scand ; 138(3): 203-211, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29732549

RESUMEN

OBJECTIVES: Eslicarbazepine acetate (ESL) is a once-daily (QD) oral antiepileptic drug (AED) for focal-onset seizures (FOS). Pharmacokinetic (PK) and pharmacodynamic (PD) models were developed to assess dose selection, identify significant AED drug interactions, and quantitate relationships between exposure and safety and efficacy outcomes from Phase 3 trials of adjunctive ESL. METHODS: Eslicarbazepine (the primary active metabolite of ESL) population PK was evaluated using data from 1351 subjects enrolled in 14 studies (11 Phase 1 and three Phase 3 studies) after multiple oral doses ranging from 400 to 1200 mg. Population PK and PD models related individual eslicarbazepine exposures to safety outcomes and efficacy responses. RESULTS: Eslicarbazepine PK was described by a one-compartment model with linear absorption and elimination. The probability of a treatment-emergent adverse event (TEAE; dizziness, headache, or somnolence) was higher with an initial dose of ESL 800 mg than with an initial dose of ESL 400 mg QD. Body weight, sex, region, and baseline use of carbamazepine (CBZ) or lamotrigine were also found to influence the probability of TEAEs. Eslicarbazepine exposure influenced serum sodium concentration, standardized seizure frequency, and probability of response; better efficacy outcomes were predicted in patients not from Western Europe (WE; vs WE patients) and those not taking CBZ (vs taking CBZ) at baseline. CONCLUSIONS: Pharmacokinetic and PK/PD modeling were implemented during the development of ESL for adjunctive treatment of FOS in adults. This quantitative approach supported decision-making during the development of ESL, and contributed to dosing recommendations and labeling information related to drug interactions.


Asunto(s)
Anticonvulsivantes/farmacocinética , Dibenzazepinas/farmacocinética , Adulto , Anciano , Anticonvulsivantes/efectos adversos , Dibenzazepinas/efectos adversos , Relación Dosis-Respuesta a Droga , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/epidemiología , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos/etiología , Femenino , Humanos , Masculino , Persona de Mediana Edad , Convulsiones/tratamiento farmacológico
6.
Ann Oncol ; 27(2): 324-32, 2016 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-26646758

RESUMEN

BACKGROUND: Patients with advanced, incurable cancer receiving anticancer treatment often experience multidimensional symptoms. We hypothesize that real-time monitoring of both symptoms and clinical syndromes will improve symptom management by oncologists and patient outcomes. PATIENTS AND METHODS: In this prospective multicenter cluster-randomized phase-III trial, patients with incurable, symptomatic, solid tumors, who received new outpatient chemotherapy with palliative intention, were eligible. Immediately before the weekly oncologists' visit, patients completed the palm-based E-MOSAIC assessment (Edmonton-Symptom-Assessment-Scale, ≤3 additional symptoms, estimated nutritional intake, body weight change, Karnofsky Performance Status, medications for pain, fatigue, nutrition). A cumulative, longitudinal monitoring sheet (LoMoS) was printed immediately. Eligible experienced oncologists were defined as one cluster each and randomized to receive the immediate print-out LoMoS (intervention) or not (control). Primary analysis limited to patients having uninterrupted (>4/6 visits with same oncologist) patient-oncologist sequences was a mixed model for the difference in patients global quality of life (G-QoL; items 29/30 of EORTC-QlQ-c30) between baseline (BL) and week 6. Intention-to-treat (ITT) analysis included all eligible patients. RESULTS: In 8 centers, 82 oncologists treated 264 patients (median 66 years; overall survival intervention 6.3, control 5.4 months) with various tumors. The between-arm difference in G-QoL of 102 uninterrupted patients (intervention: 55; control: 47) was 6.8 (P = 0.11) in favor of the intervention; in a sensitivity analysis (oncologists treating ≥2 patients; 50, 39), it was 9.0 (P = 0.07). ITT analysis revealed improvement in symptoms (difference last study visit-BL: intervention -5.4 versus control 2.1, P = 0.003) and favored the intervention for communication and coping. More patients with high symptom load received immediate symptom management (chart review, nurse-patient interview) by oncologists getting the LoMoS. CONCLUSION: Monitoring of patient symptoms, clinical syndromes and their management clearly reduced patients' symptoms, but not QoL. Our results encourage the implementation of real-time monitoring in the routine workflow of oncologist with a computer solution.


Asunto(s)
Monitoreo Ambulatorio/métodos , Neoplasias/patología , Cuidados Paliativos/métodos , Evaluación de Síntomas/métodos , Adulto , Anciano , Anciano de 80 o más Años , Antineoplásicos/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Toma de Decisiones Clínicas , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neoplasias/terapia , Pacientes Ambulatorios , Estudios Prospectivos , Calidad de Vida , Encuestas y Cuestionarios
7.
Mol Psychiatry ; 21(1): 97-107, 2016 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-25450226

RESUMEN

Consumption of caffeine, a non-selective adenosine A2A receptor (A2AR) antagonist, reduces the risk of developing Alzheimer's disease (AD) in humans and mitigates both amyloid and Tau burden in transgenic mouse models. However, the impact of selective A2AR blockade on the progressive development of AD-related lesions and associated memory impairments has not been investigated. In the present study, we removed the gene encoding A2AR from THY-Tau22 mice and analysed the subsequent effects on both pathological (Tau phosphorylation and aggregation, neuro-inflammation) and functional impairments (spatial learning and memory, hippocampal plasticity, neurotransmitter profile). We found that deleting A2ARs protect from Tau pathology-induced deficits in terms of spatial memory and hippocampal long-term depression. These effects were concomitant with a normalization of the hippocampal glutamate/gamma-amino butyric acid ratio, together with a global reduction in neuro-inflammatory markers and a decrease in Tau hyperphosphorylation. Additionally, oral therapy using a specific A2AR antagonist (MSX-3) significantly improved memory and reduced Tau hyperphosphorylation in THY-Tau22 mice. By showing that A2AR genetic or pharmacological blockade improves the pathological phenotype in a Tau transgenic mouse model, the present data highlight A2A receptors as important molecular targets to consider against AD and Tauopathies.


Asunto(s)
Trastornos del Conocimiento/fisiopatología , Hipocampo/fisiopatología , Depresión Sináptica a Largo Plazo/fisiología , Receptor de Adenosina A2A/metabolismo , Tauopatías/fisiopatología , Antagonistas del Receptor de Adenosina A2/farmacología , Enfermedad de Alzheimer/tratamiento farmacológico , Enfermedad de Alzheimer/fisiopatología , Animales , Trastornos del Conocimiento/tratamiento farmacológico , Modelos Animales de Enfermedad , Ácido Glutámico/metabolismo , Hipocampo/efectos de los fármacos , Humanos , Depresión Sináptica a Largo Plazo/efectos de los fármacos , Ratones Transgénicos , Fosforilación , ARN Mensajero/metabolismo , Receptor de Adenosina A2A/genética , Tauopatías/tratamiento farmacológico , Técnicas de Cultivo de Tejidos , Xantinas/farmacología , Ácido gamma-Aminobutírico/metabolismo , Proteínas tau/genética , Proteínas tau/metabolismo
9.
Ann Oncol ; 26(11): 2221-47, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26216388

RESUMEN

BACKGROUND: In the past years, there has been significant progress in anticancer drug development for patients with metastatic castration-resistant prostate cancer (CRPC). However, the current instruments to assess clinical treatment response have limitations and may not sufficiently reflect patient benefit. Our objective was to systematically identify tools to evaluate both patient benefit and clinical anticancer-treatment response as basis for an international consensus process and development of a specific pragmatic instrument for men with CRPC. METHODS: PubMed, Embase and CINAHL were searched to identify currently available tools to assess anticancer-treatment benefit, other than standard imaging procedures and prostate-specific antigen measurements, namely quality of life (QoL), detailed pain assessment, physical function and objective measures of other complex cancer-related syndromes in patients with CRPC. Additionally, all CRPC phase III trials published in the last 5 years were reviewed as well as studies using physical function tools in a general cancer population. The PRIMSA statement was followed for the systematic review process. RESULTS: The search generated 1096 hits, 185 full-text papers were screened and finally 73 publications were included. Additional 89 publications were included by hand-search. We identified a total of 98 tools used in CRPC trials and grouped these into three categories: 22 tools assessing QoL domains and subgroups, 47 tools for pain assessment and 29 tools for objective measures, mainly physical function and assessment of skeletal disease burden. CONCLUSION: A wide variety of assessment tools and also efforts to standardize and harmonize patient-reported outcomes and pain assessment were identified. However, the specific needs of the increasing CRPC population living longer with their incurable cancer are insufficiently captured and objective physical outcome measures are under-represented. In the age of new anticancer drug targets and principles, new methods to monitor patient relevant outcomes of antineoplastic therapy are of utmost importance.


Asunto(s)
Antineoplásicos/uso terapéutico , Diagnóstico por Imagen , Antígeno Prostático Específico , Neoplasias de la Próstata Resistentes a la Castración/diagnóstico , Neoplasias de la Próstata Resistentes a la Castración/tratamiento farmacológico , Animales , Ensayos Clínicos como Asunto/métodos , Diagnóstico por Imagen/métodos , Humanos , Masculino , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata Resistentes a la Castración/sangre , Resultado del Tratamiento
10.
Support Care Cancer ; 22(9): 2425-34, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-24705855

RESUMEN

PURPOSE: We investigated the feasibility and acceptance of electronic monitoring of symptoms and syndromes in oncological outpatient clinics using a PALM (handheld computer). METHODS: The assessment of a combination of symptoms and clinical benefit parameters grouped in four pairs was tested in a pilot phase in advanced cancer patients. Based on these experiences, the software E-MOSAIC was developed, consisting of patient-reported symptoms and nutritional intake and objective assessments (weight, weight loss, performance status and medication for pain, fatigue, and cachexia). E-MOSAIC was then tested in four Swiss oncology centers. In order to compare the methods, patients completed the E-MOSAIC as a paper and a PALM version. Preferences of version and completion times were collected. Assessments were compared using Wilcoxon signed-rank tests , and the test-retest reliability was evaluated. RESULTS: The pilot phase was completed by 22 patients. Most patients and physicians perceived the assessment as useful. Sixty-two patients participated in the feasibility study. Twelve patients reported problems (understanding, optical, tactile), and five patients could not complete the assessment. The median time to complete the PALM-based assessment was 3 min. Forty-nine percent of patients preferred the PALM, 23 % preferred a paper version, and 28 % of patients had no preference. Paper vs. PALM revealed no significant differences in symptoms, but in nutritional intake (p = 0.013). Test-retest (1 h, n = 20) reliability was satisfactory (r = 073-98). CONCLUSION: Electronic symptom and clinical benefit monitoring is feasible in oncology outpatient clinics and perceived as useful by patients, oncology nurses, and oncologists. E-MOSAIC is tested in a prospective randomized trial.


Asunto(s)
Computadoras de Mano , Autoevaluación Diagnóstica , Monitoreo Ambulatorio/instrumentación , Neoplasias/terapia , Adulto , Anciano , Progresión de la Enfermedad , Estudios de Factibilidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Monitoreo Ambulatorio/psicología , Neoplasias/complicaciones , Neoplasias/patología , Dolor/diagnóstico , Dolor/epidemiología , Dolor/etiología , Dimensión del Dolor , Reproducibilidad de los Resultados , Autoinforme , Programas Informáticos , Síndrome
11.
Ann Oncol ; 25(8): 1635-42, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-24562443

RESUMEN

BACKGROUND: Weight loss limits cancer therapy, quality of life and survival. Common diagnostic criteria and a framework for a classification system for cancer cachexia were recently agreed upon by international consensus. Specific assessment domains (stores, intake, catabolism and function) were proposed. The aim of this study is to validate this diagnostic criteria (two groups: model 1) and examine a four-group (model 2) classification system regarding these domains as well as survival. PATIENTS AND METHODS: Data from an international patient sample with advanced cancer (N = 1070) were analysed. In model 1, the diagnostic criteria for cancer cachexia [weight loss/body mass index (BMI)] were used. Model 2 classified patients into four groups 0-III, according to weight loss/BMI as a framework for cachexia stages. The cachexia domains, survival and sociodemographic/medical variables were compared across models. RESULTS: Eight hundred and sixty-one patients were included. Model 1 consisted of 399 cachectic and 462 non-cachectic patients. Cachectic patients had significantly higher levels of inflammation, lower nutritional intake and performance status and shorter survival. In model 2, differences were not consistent; appetite loss did not differ between group III and IV, and performance status not between group 0 and I. Survival was shorter in group II and III compared with other groups. By adding other cachexia domains to the model, survival differences were demonstrated. CONCLUSION: The diagnostic criteria based on weight loss and BMI distinguish between cachectic and non-cachectic patients concerning all domains (intake, catabolism and function) and is associated with survival. In order to guide cachexia treatment a four-group classification model needs additional domains to discriminate between cachexia stages.


Asunto(s)
Caquexia/clasificación , Caquexia/diagnóstico , Caquexia/etiología , Técnicas de Apoyo para la Decisión , Neoplasias/complicaciones , Anciano , Algoritmos , Consenso , Femenino , Humanos , Cooperación Internacional , Masculino , Persona de Mediana Edad , Neoplasias/diagnóstico , Neoplasias/mortalidad , Pronóstico , Análisis de Supervivencia , Pérdida de Peso/fisiología
12.
Curr Alzheimer Res ; 8(6): 633-8, 2011 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-21605043

RESUMEN

Alzheimer's disease (AD) is a neurodegenerative disorder histologically defined by the cerebral accumulation of amyloid deposits and neurofibrillary tangles composed of hyperphosphorylated tau proteins. Loss of basal forebrain cholinergic neurons is another hallmark of the disease thought to contribute to the cognitive dysfunctions. To this date, the mechanisms underlying cholinergic neurons degeneration remain uncertain. The present study aimed to investigate the relationship between neurofibrillary degeneration and cholinergic defects in AD using THY-Tau22 transgenic mouse model exhibiting a major hippocampal AD-like tau pathology and hyperphosphorylated tau species in the septohippocampal pathway. Here, we report that at a time THY-Tau22 mice display strong reference memory alterations, the retrograde transport of fluorogold through the septohippocampal pathway is altered. This impairment is associated with a significant reduction in the number of choline acetyltransferase (ChAT)-immunopositive cholinergic neurons in the medial septum. Analysis of nerve growth factor (NGF) levels supports an accumulation of the mature neurotrophin in the hippocampus of THY-Tau22 mice, consistent with a decrease of its uptake or retrograde transport by cholinergic terminals. Finally, our data strongly support that tau pathology could be instrumental in the cholinergic neuronal loss observed in AD.


Asunto(s)
Encéfalo/patología , Neuronas Colinérgicas/patología , Ovillos Neurofibrilares/patología , Proteínas tau/metabolismo , Animales , Encéfalo/metabolismo , Neuronas Colinérgicas/metabolismo , Aprendizaje por Laberinto/fisiología , Memoria/fisiología , Ratones , Ratones Transgénicos , Ovillos Neurofibrilares/metabolismo , Neuronas/metabolismo , Neuronas/patología , Proteínas tau/genética
13.
Bioorg Med Chem Lett ; 21(4): 1134-40, 2011 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-21269824

RESUMEN

Structure-guided lead optimization of recently described benzimidazolyl acetamides addressed the key liabilities of the previous lead compound 1. These efforts culminated in the discovery of 4-{(S)-2-[2-(4-chloro-phenyl)-5,6-difluoro-benzoimidazol-1-yl]-2-cyclohexyl-acetylamino}-3-fluoro-benzoic acid 7g, a highly potent and selective FXR agonist with excellent physicochemical and ADME properties and potent lipid lowering activity after oral administration to LDL receptor deficient mice.


Asunto(s)
Bencimidazoles/química , Receptores Citoplasmáticos y Nucleares/agonistas , para-Aminobenzoatos , Ácido 4-Aminobenzoico/síntesis química , Ácido 4-Aminobenzoico/química , Ácido 4-Aminobenzoico/farmacocinética , Administración Oral , Animales , Bencimidazoles/síntesis química , Bencimidazoles/farmacocinética , Sitios de Unión , Simulación por Computador , Cristalografía por Rayos X , Humanos , Masculino , Ratones , Ratones Endogámicos C57BL , Microsomas Hepáticos/metabolismo , Conformación Molecular , Ratas , Ratas Wistar , Receptores Citoplasmáticos y Nucleares/metabolismo , Receptores de LDL/deficiencia , Receptores de LDL/genética , Receptores de LDL/metabolismo , Relación Estructura-Actividad
14.
Transfus Med ; 20(1): 48-61, 2010 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-19778318

RESUMEN

Solvent-detergent (S/D) viral inactivation was recently adapted to the treatment of single plasma donations and cryoprecipitate minipools. We present here a new process and a new bag system where the S/D reagents are removed by filtration and the final products subjected to bacterial (0.2 microm) filtration. Recovered and apheresis plasma for transfusion (FFP) and cryoprecipitate minipools (400 +/- 20 mL) were subjected to double-stage S/D viral inactivation, followed by one oil extraction and a filtration on a S/D and phthalate [di(2-ethylhexyl) phthalate (DEHP)] adsorption device and a 0.2 microm filter. The initial and the final products were compared for visual appearance, blood cell count and cell markers, proteins functional activity, von Willebrand factor (VWF) multimers and protein profile by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Tri (n-butyl) phosphate (TnBP) was quantified by gas chromatography and Triton X-45 and DEHP by high-performance-liquid chromatography (HPLC). General safety tests were by 6.5 mL/kg intravenous injection in rats. The treated plasmas and cryoprecipitates were very clear and the protein content and functionality, VWF multimers and SDS-PAGE profiles were well preserved. TnBP and Triton X-45 were < 1 and <25 ppm, respectively, and DEHP (about 5 ppm) was less than it was in the starting materials. Blood cell counts and CD45, CD61 and glycophorin A markers were negative. There was no enhanced toxicity in rats. Thus, plasma and cryoprecipitate can be S/D-treated in this new CE-marked disposable integral processing system under conditions preserving protein function and integrity, removing blood cells, S/D agents and DEHP, and ensuring bacterial sterility. This process may offer one additional option to blood establishments for the production of virally inactivated plasma components.


Asunto(s)
Eliminación de Componentes Sanguíneos/métodos , Conservación de la Sangre/instrumentación , Criopreservación/instrumentación , Factor VIII , Fibrinógeno , Plasma , Inactivación de Virus , Animales , Recuento de Células Sanguíneas , Electroforesis de las Proteínas Sanguíneas , Proteínas Sanguíneas/análisis , Cromatografía Líquida de Alta Presión , Detergentes/análisis , Dietilhexil Ftalato/análisis , Femenino , Filtración , Humanos , Masculino , Octoxinol/análisis , Organofosfatos/análisis , Ratas , Ratas Sprague-Dawley , Solventes/análisis , Desintoxicación por Sorción
15.
Br J Pharmacol ; 158(7): 1763-70, 2009 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-19917065

RESUMEN

BACKGROUND AND PURPOSE: The association between torcetrapib and its off-target effects on blood pressure suggested a possible class-specific effect. The effects of dalcetrapib (RO4607381/JTT-705) and torcetrapib on haemodynamics and the renin-angiotensin-aldosterone system (RAAS) were therefore assessed in a rat model. EXPERIMENTAL APPROACH: Arterial pressure (AP) and heart rate were measured by telemetry in normotensive and spontaneously hypertensive rats (SHR) receiving torcetrapib 10, 40 or 80 mg kg(-1) day(-1); dalcetrapib 100, 300 or 500 mg(-1) kg day(-1); or vehicle (placebo) for 5 days. Expression of RAAS genes in adrenal gland, kidney, aorta and lung from normotensive rats following 5 days' treatment with torcetrapib 40 mg kg(-1) day(-1), dalcetrapib 500 mg kg(-1) day(-1) or vehicle was measured by quantitative polymerase chain reaction. KEY RESULTS: Torcetrapib transiently increased mean AP in normotensive rats (+3.7 +/- 0.1 mmHg), whereas treatment in SHR resulted in a dose-dependent and sustained increase [+6.5 +/- 0.6 mmHg with 40 mg kg(-1) day(-1) at day 1 (P < 0.05 versus placebo)], which lasted over the treatment period. No changes in AP or heart rate were observed with dalcetrapib. Torcetrapib, but not dalcetrapib, increased RAAS-related mRNAs in adrenal glands and aortas. CONCLUSIONS AND IMPLICATIONS: In contrast to torcetrapib, dalcetrapib did not increase blood pressure or RAAS-related gene expression in rats, suggesting that the off-target effects of torcetrapib are not a common feature of all compounds acting on cholesteryl ester transfer protein.


Asunto(s)
Presión Sanguínea/efectos de los fármacos , Quinolinas/toxicidad , Sistema Renina-Angiotensina/efectos de los fármacos , Compuestos de Sulfhidrilo/toxicidad , Glándulas Suprarrenales/efectos de los fármacos , Glándulas Suprarrenales/metabolismo , Amidas , Animales , Anticolesterolemiantes/administración & dosificación , Anticolesterolemiantes/toxicidad , Aorta/efectos de los fármacos , Aorta/metabolismo , Proteínas de Transferencia de Ésteres de Colesterol/antagonistas & inhibidores , Relación Dosis-Respuesta a Droga , Ésteres , Frecuencia Cardíaca/efectos de los fármacos , Hemodinámica/efectos de los fármacos , Masculino , Reacción en Cadena de la Polimerasa , Quinolinas/administración & dosificación , ARN Mensajero/efectos de los fármacos , ARN Mensajero/metabolismo , Ratas , Ratas Endogámicas SHR , Ratas Wistar , Sistema Renina-Angiotensina/genética , Compuestos de Sulfhidrilo/administración & dosificación
16.
J Neurophysiol ; 99(6): 3123-35, 2008 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-18436637

RESUMEN

A major goal of this study was to characterize the cervicocollic reflexes (CCRs) in awake squirrel monkeys and compare it to observations in cat. This was carried out by stabilizing the head in space while rotating the lower body. The magnitude and phase of the torque produced between the head and the restraint system was used as an indicator of the CCR. Many properties of the squirrel monkey's CCR were found to be similar to those of the cat. The torque decreased as a function of frequency and amplitude. In addition, the static level of torque increased with head eccentricity. One difference was that the torque was 90x smaller in squirrel monkeys. Biomechanical differences, such as differences in head inertia, could account for these differences. The second goal was to determine if the CCR was sensitive to increases in the head's inertia. To test this, we increased the head's inertia by a factor of 36 and allowed the reflexes to adapt by rotating the whole body while the head was free to move. The CCR was rapidly assessed by periodically stabilizing the head in space during whole-body rotations. The magnitude of the torque increased by nearly 60%, suggesting that the CCR may adapt when changes in the head's inertia are imposed. Changes in the torque were also consistent with changes in head-movement kinematics during whole-body rotation. This suggests that the collic reflexes may dynamically adapt to maintain the performance and kinematics of reflexive head movement.


Asunto(s)
Adaptación Fisiológica/fisiología , Movimientos de la Cabeza/fisiología , Cabeza/fisiología , Músculos del Cuello/fisiología , Reflejo de Estiramiento/fisiología , Estimulación Acústica , Animales , Conducta Animal , Electromiografía , Análisis de Fourier , Macaca mulatta , Psicofísica , Rotación , Torque
17.
Hernia ; 12(1): 51-6, 2008 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-17823770

RESUMEN

OBJECTIVE: The Polysoft patch was conceived to facilitate performance of the transinguinal preperitoneal patch method and combine the advantages of patch placement in the preperitoneal space and the open inguinal approach. The aim of this prospective study was to evaluate the rate of recurrence and chronic pain at midterm follow-up. METHODS: In a cohort of 200 hernia repairs involved in a prospective evaluation, midterm results of 171 cases operated on from 1 July 2004 to 31 December 2005 were assessed. The anesthesia was spinal in 136 (79.5%) cases, local in 26 (15.2%), and general in nine (5.3%). A questionnaire was sent to patients on 30 November 2006 asking about recurrence, chronic groin pain, and satisfaction. RESULTS: With a median follow-up of 21.9 months (11.6-29.4), 167 (97.7%) patients were evaluated, two were dead, and two were lost to follow-up. There were two (1.2%) recurrences that were reoperated on; both consisted of an indirect sac that protruded between the branches of the split patch. Eleven (6.6%) patients alleged the feeling of a foreign body, and 12 (7.2%) reported pain that occurred occasionally or upon effort but did not prevent activity. In one case, the pain present before operation was unchanged, and in three cases, the pain could clearly be attributed to an origin other than the hernia repair. No case of pain that impaired activity was observed. With regard to results, 98.2% of patients were satisfied and 97.6% declared that they would adopt the same method in case they had to be operated on for another hernia. CONCLUSION: These results suggest that the technique provides a low rate of recurrence and a low percentage of chronic pain that did not impair activity.


Asunto(s)
Hernia Abdominal/cirugía , Dolor Postoperatorio , Mallas Quirúrgicas , Adulto , Anciano , Anciano de 80 o más Años , Anestesia , Enfermedad Crónica , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Recurrencia , Encuestas y Cuestionarios , Resultado del Tratamiento
18.
Rev Med Brux ; 28(5): 413-21, 2007.
Artículo en Francés | MEDLINE | ID: mdl-18069515

RESUMEN

Huntington's disease is caused by an abnormal CAG expansion within the gene encoding Huntingtin which induces a major cortico-striatal degeneration as well as motor and cognitive impairments. Since the discovery of the present mutation, a number of experimental data have been collected to uncover the physiopathological consequences of mutated Huntingtin expression. Here, we review the molecular and cellular mechanisms underlying and show how this better knowledge can be translate to clinical trials in patients.


Asunto(s)
Enfermedad de Huntington/patología , Neuronas/patología , Ensayos Clínicos como Asunto , Trastornos del Conocimiento/etiología , Humanos , Proteína Huntingtina , Enfermedad de Huntington/genética , Enfermedad de Huntington/terapia , Trastornos del Movimiento/etiología , Trastornos del Movimiento/patología , Proteínas del Tejido Nervioso/genética , Proteínas Nucleares/genética
19.
Hernia ; 11(3): 229-34, 2007 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-17541701

RESUMEN

INTRODUCTION: The Polysoft patch was conceived to associate the advantages of placement of the patch in the preperitoneal space (PPS) and easiness of the inguinal incision. The aim of this study was to evaluate prospectively the feasibility and postoperative outcome of this method. METHODS: Two hundred Polysoft repairs were performed in 191 consecutive patients with Nyhus types III and IV hernias. The anesthesia was spinal in 146 patients (76.4%), local in 36 (18.8%) and general in 9 (4.7%). The patch was placed in the PPS through the hernial orifice in the fascia in direct hernias and through the internal orifice in indirect ones. The technical points and postoperative course data were prospectively recorded and postoperative pain was assessed daily by visual analogue scale (VAS) in 25 patients. RESULTS: The method was achieved in all the cases. The type of the hernias was as follows: 59 direct, 129 indirect (including 28 pantaloon and 16 sliding), 3 inguino-femoral and 9 recurrent. The size of the patch used was medium in 152 cases (76%) and large in 48 (24%). The large patch was used more in pantaloon, sliding and inguino-femoral hernias. In direct hernias the patch was not split; in indirect hernias the patch was split (so the wings recreate a new internal orifice around the spermatic cord) in 79 cases (61.2%) and not split (with the cord parietalized) in 50 cases (38.8%). The length of operation, postoperative hospital stay, return to daily activity, to work and analgesics consumption were [median +/- SD (extremes)]: 35 min +/- 9.1 (20-60), 1 day +/- 0.4 (0-5), 3 days +/- 1.8 (0-8), 15 days +/- 9.7 (1-30) and 3 days +/- 2.3 (0-10), respectively. The median number of analgesics units was 8 +/- 5.9 (0-32). The values of pain assessed daily by VAS (on 100) varied from 20.4 +/- 19.7 (0-60) at day 0, 25.0 +/- 24.5 (0-80) at day 1 to 7.5 +/- 13.7 (0-50) at day 7; the mean value for the week was 16.7 +/- 16.7 (0-57). There were 14 (7%) benign postoperative complications. CONCLUSION: This study permitted the definition of some technical points and showed that the Polysoft patch can be used for all types of hernias with a weak posterior wall, including complex cases (big scrotal, pantaloon, sliding and recurrent), with a low risk of postoperative complications, a low level of postoperative pain and a short recovery time.


Asunto(s)
Hernia Femoral/cirugía , Hernia Inguinal/cirugía , Dolor Postoperatorio/fisiopatología , Polipropilenos , Implantación de Prótesis/instrumentación , Recuperación de la Función , Mallas Quirúrgicas , Adulto , Anciano , Anciano de 80 o más Años , Estudios de Factibilidad , Femenino , Estudios de Seguimiento , Humanos , Tiempo de Internación , Masculino , Persona de Mediana Edad , Dimensión del Dolor , Peritoneo , Periodo Posoperatorio , Estudios Prospectivos , Diseño de Prótesis , Resultado del Tratamiento
20.
Neurol Res ; 29(6): 628-31, 2007 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-17535562

RESUMEN

Intracellular K(+) plays an important role in controlling ion homeostasis for maintaining cell volume and inhibiting activity of pro-apoptotic enzymes. Cytoplasmic K(+) concentration is regulated by K(+) uptake via Na(+) -K(+) -ATPase and K(+) efflux through K(+) channels in the plasma membrane. The IsK (KCNE1) protein is known to co-assemble with KCNQ1 (KvLQT1) protein to form a K(+) channel underlying the slowly activating delayed rectifier K(+) outward current which delays voltage activation. In order to further study the activity and cellular localization of IsK protein, we constructed a C-terminal fusion of IsK with EGFP (enhanced green fluorescent protein). Expression of the fusion protein appeared as clusters located in the plasma membrane and induced degeneration of both transiently or stably transfected cells.


Asunto(s)
Apoptosis/fisiología , Astrocitoma/patología , Expresión Génica/fisiología , Proteínas Fluorescentes Verdes/metabolismo , Canales de Potasio con Entrada de Voltaje/metabolismo , Animales , Línea Celular Tumoral , Proteínas Fluorescentes Verdes/genética , Humanos , Ratones , Canales de Potasio con Entrada de Voltaje/genética , Factores de Tiempo , Transfección/métodos
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