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1.
Ann Oncol ; 34(10): 920-933, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37704166

RESUMEN

BACKGROUND: Patients with advanced non-small-cell lung cancer (NSCLC) treated with immune checkpoint blockers (ICBs) ultimately progress either rapidly (primary resistance) or after durable benefit (secondary resistance). The cancer vaccine OSE2101 may invigorate antitumor-specific immune responses after ICB failure. The objective of ATALANTE-1 was to evaluate its efficacy and safety in these patients. PATIENTS AND METHODS: ATALANTE-1 was a two-step open-label study to evaluate the efficacy and safety of OSE2101 compared to standard-of-care (SoC) chemotherapy (CT). Patients with human leukocyte antigen (HLA)-A2-positive advanced NSCLC without actionable alterations, failing sequential or concurrent CT and ICB were randomized (2 : 1) to OSE2101 or SoC (docetaxel or pemetrexed). Primary endpoint was overall survival (OS). Interim OS futility analysis was planned as per Fleming design. In April 2020 at the time of interim analysis, a decision was taken to prematurely stop the accrual due to coronavirus disease 2019 (COVID-19). Final analysis was carried out in all patients and in the subgroup of patients with ICB secondary resistance defined as failure after ICB monotherapy second line ≥12 weeks. RESULTS: Two hundred and nineteen patients were randomized (139 OSE2101, 80 SoC); 118 had secondary resistance to sequential ICB. Overall, median OS non-significantly favored OSE2101 over SoC {hazard ratio (HR) [95% confidence interval (CI)] 0.86 [0.62-1.19], P = 0.36}. In the secondary resistance subgroup, OSE2101 significantly improved median OS versus SoC [11.1 versus 7.5 months; HR (95% CI) 0.59 (0.38-0.91), P = 0.017], and significantly improved post-progression survival (HR 0.46, P = 0.004), time to Eastern Cooperative Oncology Group (ECOG) performance status deterioration (HR 0.43, P = 0.006) and Quality of Life Questionnaire Core 30 (QLQ-C30) global health status compared to SoC (P = 0.045). Six-month disease control rates and progression-free survival were similar between groups. Grade ≥3 adverse effects occurred in 11.4% of patients with OSE2101 and 35.1% in SoC (P = 0.002). CONCLUSIONS: In HLA-A2-positive patients with advanced NSCLC and secondary resistance to immunotherapy, OSE2101 increased survival with better safety compared to CT. Further evaluation in this population is warranted.


Asunto(s)
COVID-19 , Vacunas contra el Cáncer , Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Humanos , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Vacunas contra el Cáncer/efectos adversos , Antígeno HLA-A2/uso terapéutico , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/etiología , Calidad de Vida , Resultado del Tratamiento , Protocolos de Quimioterapia Combinada Antineoplásica/efectos adversos , COVID-19/etiología , Inmunoterapia
2.
Ir J Psychol Med ; 39(2): 113-114, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35578765

RESUMEN

Anthropology is defined as "the study of humans", while psychiatric anthropology is a subfield of cultural anthropology which uses qualitative methodologies to explore the experience of mental illness. In a field that is often dominated by quantitative research, an anthropological approach allows us to understand experiences surrounding illness and the cultural context of mental illness. The articles presented in this issue of the Irish Journal of Psychological Medicine explore individual and group perspectives within a variety of cultural and historical contexts. This compilation of articles unearths fascinating insights into the lived experiences of distinct and vulnerable groups, including young people, migrants and members of the travelling community. Harnessing these insights can help us to tailor our services to the needs of societal populations, as well as improving therapeutic relationships with the ultimate goal of better treatment outcomes.


Asunto(s)
Trastornos Mentales , Psiquiatría , Adolescente , Antropología , Humanos
3.
ESMO Open ; 7(2): 100418, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35227966

RESUMEN

INTRODUCTION: ROS1-rearranged (ROS1+) non-small-cell lung cancer (NSCLC) is a rare lung cancer with limited treatment options. Phase I-II studies with ROS1-tyrosine kinase inhibitors (TKIs) included small numbers of patients and real-world data are lacking. We investigate the efficacy and safety of lorlatinib, a third-generation TKI targeting ALK and ROS1, in patients with ROS1+ NSCLC treated through an expanded access program. METHODS: Consecutive patients with advanced ROS1+ NSCLC treated with lorlatinib between October 2015 and June 2019 were included. Data were collected from medical records. The primary endpoint was progression-free survival. RESULTS: Out of the 80 patients included, 47(59%) were female, 49(62%) never smokers (less than 100 cigarettes over the lifetime), and 68(85%) had stage IV NSCLC at diagnosis. Most frequent histology was adenocarcinoma (95%) and median age was 58.2 years. At the time of lorlatinib initiation, 51(64%) patients had brain metastases and 55(81%) were PS 0-1. Lorlatinib was administered as second/third/fourth/fifth+ line in 29%/28%/18%/26% of patients. All patients previously received at least one ROS1 TKI, and 55(69%) previously received chemotherapy. Median follow-up from lorlatinib initiation was 22.2 months. Median progression-free survival and overall survival from lorlatinib initiation were 7.1 months [95% confidence interval (CI) 5.0-9.9 months] and 19.6 months (95% CI 12.3-27.5 months). Median duration of treatment with lorlatinib was 7.4 months (95% CI 6.5-13.1 months). Overall response and disease control rates were 45% and 82%, respectively. The central nervous system response rate was 72%. Treatment was stopped due to toxicity in 10 patients (13%). The safety profile was consistent with previously published data. CONCLUSIONS: Lorlatinib is a major treatment option for advanced refractory ROS1+ NSCLC in treatment strategy.


Asunto(s)
Carcinoma de Pulmón de Células no Pequeñas , Neoplasias Pulmonares , Aminopiridinas , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/patología , Femenino , Humanos , Lactamas , Lactamas Macrocíclicas/farmacología , Lactamas Macrocíclicas/uso terapéutico , Neoplasias Pulmonares/patología , Masculino , Persona de Mediana Edad , Proteínas Tirosina Quinasas/uso terapéutico , Proteínas Proto-Oncogénicas/genética , Proteínas Proto-Oncogénicas/uso terapéutico , Pirazoles
5.
Rev Mal Respir ; 35(8): 846-851, 2018 Oct.
Artículo en Francés | MEDLINE | ID: mdl-30174235

RESUMEN

In the setting of small cell lung cancer (SCLC), the development of immuno-oncological agents, particularly those targeting Programmed cell Death protein 1 (PD-1) and Programmed cell Death protein Ligand 1 (PD-L1), is still at an early stage. Two critical elements need to be considered : the current data are extracted from Phase I and Phase II trials and the level of evidence from phase III trials has not been reached as it has been for non-small cell lung cancer (NSCLC) or for malignant melanoma ; The second aspect is the slow development of predictive factors for response to the immuno-oncological agents targeting the PD-1 receptor and its ligand. The clinical data are still too fragmentary to produce recommendations, although the improvement in progression-free survival seen in different phase II studies is promising. The expectation of clinicians dealing withSCLC is an indication of the challenge that this disease currently poses to oncology and justifies a focused clinical research effort.


Asunto(s)
Antineoplásicos Inmunológicos/uso terapéutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias Pulmonares/tratamiento farmacológico , Terapia Molecular Dirigida/tendencias , Carcinoma Pulmonar de Células Pequeñas/tratamiento farmacológico , Anticuerpos Monoclonales/uso terapéutico , Cisplatino/administración & dosificación , Cisplatino/uso terapéutico , Etopósido/administración & dosificación , Etopósido/uso terapéutico , Humanos
6.
Rev Mal Respir ; 35(9): 919-928, 2018 Nov.
Artículo en Francés | MEDLINE | ID: mdl-30174238

RESUMEN

OBJECTIVE: In an attempt to understand physicians' expectations of chemotherapy, a group of lung cancer specialists was involved in an online survey investigating their opinions by a self-questionnaire. The questionnaire described five different chemotherapy prescription situations for lung cancer patients (stages IIIB or IV). METHOD: A total of 30 expert specialists were invited; 22 responded (73%). For each of the clinical situations, the expert was asked for his opinion on 3 items: cure, prolongation of survival and alleviation of symptoms. Each item was judged on a Likert scale with categories between -2 "not at all probable" and +2 "quite likely". RESULTS: For "cure", the percentage of -2 responses differed significantly according to the clinical situation (Fisher test: P<0.00001). The trend test showed a relationship between the percentage of -2 responses and the suspected order of the clinical situations (Cochran-Armitage trend test: P<0.0001). For symptom alleviation, the percentage of responses +2 and +1 differed significantly according to the clinical situation (Fisher test: P=0.00013, trend test: P<0.0001). CONCLUSION: What specialist physicians expect of chemotherapy in terms of curability and symptom relief differs according to the actual statistical prognosis of each situation as presented in the literature. The worst prognostic situation leads to the strongest expectation in terms of symptom relief and, conversely, the lowest for curability.


Asunto(s)
Antineoplásicos , Actitud del Personal de Salud , Neoplasias Pulmonares/tratamiento farmacológico , Oncología Médica , Médicos , Adulto , Anciano , Antineoplásicos/uso terapéutico , Femenino , Humanos , Neoplasias Pulmonares/mortalidad , Neoplasias Pulmonares/psicología , Masculino , Oncología Médica/estadística & datos numéricos , Persona de Mediana Edad , Cuidados Paliativos/psicología , Cuidados Paliativos/estadística & datos numéricos , Médicos/psicología , Médicos/estadística & datos numéricos , Autoinforme , Especialización , Encuestas y Cuestionarios
7.
Arch Pediatr ; 21(9): 976-83, 2014 Sep.
Artículo en Francés | MEDLINE | ID: mdl-25125032

RESUMEN

OBJECTIVES: ABO fetomaternal red blood cell incompatibility (ABO FMI) induces an immune hemolysis after fetal transfer of hemolyzing maternal anti-A or anti-B. ABO hemolytic disease (ABO HD) remains the most frequent cause of severe and early jaundice in newborns. High levels of unconjugated hyperbilirubinemia may induce acute and chronic neurological complications. Severe hyperbilirubinemia can be prevented by first-line phototherapy (PT) treatment, but exchange transfusion (ET) is required if treatment is not effective, even if ET is linked with high hemodynamic, infectious, gastrointestinal, and/or biological morbidity. Intravenous human polyclonal immunoglobulins (IVIg) have been proposed in concomitant use with PT in order to avoid the requirement for ET in ABO FMI. METHODS: Electronic databases of all published clinical trials in neonatal hyperbilirubinemia due to ABO incompatibility were systematically queried for randomized controlled clinical trials comparing PT alone to PT associated with IVIg based on the requirement for ET. Duration of PT and adverse events were optional criteria. A meta-analysis of the selected data was performed on six selected trials out of 28 found. RESULTS: IVIg doses ranged from 0.5 to 1.5 g/Kg in one to three administrations. Requirement for ET was lower in the IgIV+PT group, with a relative risk of 0.27 [CI 95% 0.17-0.42; P<0.00001], expressed as a number needed to treat of five neonates to avoid one ET. The mean duration of PT was 4 days in the PT group and association of PT with IVIg significantly reduced the duration of PT treatment by 0.84 days. The tolerance of the IVIg and PT association was good with no reported cases of ulcerative enterocolitis in 265 treated newborns. CONCLUSION: IVIG associated with PT reduces the need for ET and the duration of PT in newborns with hyperbilirubinemia due to ABO hemolytic disease. Their efficacy and good tolerance prompt consideration of IVIg as a therapeutic adjuvant to PT in severe hemolytic hyperbilirubinemia due to ABO incompatibility.


Asunto(s)
Sistema del Grupo Sanguíneo ABO , Incompatibilidad de Grupos Sanguíneos/complicaciones , Hiperbilirrubinemia Neonatal/terapia , Inmunoglobulinas Intravenosas/uso terapéutico , Terapia Combinada , Humanos , Hiperbilirrubinemia Neonatal/etiología , Recién Nacido , Fototerapia
8.
Ann Rheum Dis ; 68(9): 1428-32, 2009 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-18801761

RESUMEN

OBJECTIVES: To identify the main causes of morbidity and mortality in patients with antiphospholipid syndrome (APS) during a 5-year period and to determine clinical and immunological parameters with prognostic significance. METHODS: The clinical and immunological features of a cohort of 1000 patients with APS from 13 European countries who had been followed up from 1999 to 2004 were analysed. RESULTS: 200 (20%) patients developed APS-related manifestations during the 5-year study period. Recurrent thrombotic events appeared in 166 (16.6%) patients and the most common were strokes (2.4% of the total cohort), transient ischaemic attacks (2.3%), deep vein thromboses (2.1%) and pulmonary embolism (2.1%). When the thrombotic events occurred, 90 patients were receiving oral anticoagulants and 49 were using aspirin. 31/420 (7.4%) patients receiving oral anticoagulants presented with haemorrhage. 3/121 (2.5%) women with only obstetric APS manifestations at the start of the study developed a new thrombotic event. A total of 77 women (9.4% of the female patients) had one or more pregnancies and 63 (81.8% of pregnant patients) had one or more live births. The most common fetal complications were early pregnancy loss (17.1% of pregnancies) and premature birth (35% of live births). 53 (5.3% of the total cohort) patients died. The most common causes of death were bacterial infection (21% of deaths), myocardial infarction (19%) and stroke (13%). No clinical or immunological predictor of thrombotic events, pregnancy morbidity or mortality was detected. CONCLUSION: Patients with APS still develop significant morbidity and mortality despite current treatment (oral anticoagulants or antiaggregants, or both).


Asunto(s)
Síndrome Antifosfolípido/epidemiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Anticoagulantes/administración & dosificación , Síndrome Antifosfolípido/tratamiento farmacológico , Síndrome Antifosfolípido/inmunología , Niño , Preescolar , Utilización de Medicamentos/estadística & datos numéricos , Métodos Epidemiológicos , Europa (Continente)/epidemiología , Femenino , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Pronóstico , Trombosis/epidemiología , Adulto Joven
9.
Internist (Berl) ; 47(5): 509-20; quiz 521, 2006 May.
Artículo en Alemán | MEDLINE | ID: mdl-16586130

RESUMEN

In our modern society hyperuricemia is one of the most frequent metabolism disturbances. So far, every fourth man and every tenth woman suffer from an asymptomatic or a symptomatic hyperuricemia named gout. Mostly, over nutrition and malnutrition as well as other secondary factors with a genetically determined renal secretion disturbance of uric acid lead to an increase of serum uric acid. By deposition of uric acid crystals in tissues with intermittent immunologic activation of inflammation cells a manifestation of gout can be seen. The clinical image of gout varies widely. It may manifest as acute or chronic arthritis, tophi on the skin, subcutaneous tissue and the skeletal system as well as urate nephropathy. To eliminate the consequences of hyperuricemia in the long term, apart from a thorough anamnesis of nutritional habits a general examination of metabolic parameters is necessary to exclude a metabolic syndrome and other causes for a secondarily caused hyperuricemia. As gout is very often primarily caused by a renal secretion disturbance of uric acid special diagnostics should be done. Basing on literature research and inclusion of experts opinions this article represents the therapeutically options in treatment of hyperuricemia and gout with their resulting side effects and contraindications.


Asunto(s)
Gota/diagnóstico , Hiperuricemia/diagnóstico , Alopurinol/administración & dosificación , Alopurinol/uso terapéutico , Antiinflamatorios/efectos adversos , Antiinflamatorios/uso terapéutico , Colchicina/efectos adversos , Colchicina/uso terapéutico , Diagnóstico Diferencial , Gota/tratamiento farmacológico , Gota/etiología , Supresores de la Gota/efectos adversos , Supresores de la Gota/uso terapéutico , Humanos , Hiperuricemia/tratamiento farmacológico , Hiperuricemia/etiología , Factores de Riesgo , Ácido Úrico/sangre
12.
Z Rheumatol ; 63(4): 331-7, 2004 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-15338257

RESUMEN

The antiphospholipid syndrome (APS) with its typical clinical manifestations of recurrent thrombosis and fetal loss is biochemically defined by the presence of circulating antiphospholipid antibodies (aPL). The disease pattern has raised special interest as a possible link between autoimmunity and atherosclerosis. aPL, oxidized low density lipoproteins (oxLDL), and antibodies to oxLDL (Anti-oxLDL) are suggested to play an important role in atherogenesis. In the present study we compared the serum levels of oxLDL and Anti-oxLDL in APS patients (20 subjects with primary APS; 14 subjects with secondary APS) and nonAPS subjects (24 phenotypically healthy controls samples and 12 patients with systemic lupus erythematosus [SLE]) and investigated associations of the above mentioned parameters with the intima-media thickness (IMT), a clinical surrogate parameter of atherosclerosis.SLE patients with and without APS showed significantly increased levels of Anti-oxLDL as compared to the controls group (p = 0.038 and p = 0.007, respectively). In contrast, oxLDL levels were not significantly different between the controls group and patients. The Anti-oxLDL levels correlated significantly with anticardiolipin (p = 0.002) and beta(2)-glycoprotein I antibodies (p < 0.048), both from IgG isotype. Only SLE patients without APS revealed a significantly elevated production of reactive oxygen species indicating an increased proatherogenic oxidative stress in the circulation (p < 0.002). In the patient groups, the circulating levels of oxLDL and Anti-oxLDL showed no association with atherosclerosis as estimated by IMT. In conclusion, our experimental data do not support the concept of oxidative stress-induced accelerated atherosclerosis in APS patients.


Asunto(s)
Anticuerpos/sangre , Anticuerpos/inmunología , Síndrome Antifosfolípido/sangre , Lipoproteínas LDL/sangre , Lipoproteínas LDL/inmunología , Lupus Eritematoso Sistémico/sangre , Lupus Eritematoso Sistémico/inmunología , Adulto , Síndrome Antifosfolípido/complicaciones , Humanos , Lupus Eritematoso Sistémico/complicaciones , Estadística como Asunto
13.
Curr Med Res Opin ; 20(7): 1007-16, 2004 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15265245

RESUMEN

BACKGROUND: Loss of independence becomes more marked as Alzheimer's disease (AD) progresses and contributes significantly to its societal and economic burden. Existing measures of functional disability focus either on basic or on instrumental activities of daily living (ADL). It would be more appropriate to combine these but, using existing assessment tools, this would involve considerable quantitative analysis. Recently, a qualitative and pragmatic system of classifying AD patients according to levels of dependency has been developed in a Belgian cohort. OBJECTIVES: To validate independently, in a UK community setting, a functional classification model of AD patients and to explore the relationship between dependency and costs of care using this model. RESEARCH DESIGN AND METHODS: Longitudinal epidemiological study of 224 AD patients. Data were collected at baseline and at 6 months on ADL, global state, cognition, behavioural dimensions, depression, quality of life and resource utilisation using validated instruments. An automatic classification algorithm was performed to allow identification of dependency clusters. The scheme was tested for validity against other simultaneously collected data including health and social care costs. The relationship between dependency and costs of care was explored using ANOVA models. RESULTS: Analysis of the ADL assessment instruments produced three ADL sub-scores by which patients could be classified into one of three disability clusters: ('non-dependent', 'non-dependent with instrumental functional disability', and 'dependent'). Good external validity of the classification scheme was demonstrated by correlation with simultaneously collected data. After a backward selection process on ANOVA model (at a 5% level), institutionalisation and the most dependent status were the most significant cost drivers. CONCLUSIONS: Qualitative classification of AD patients using dependency levels is a simple and validated approach. Applying this approach showed that institutionalisation and the most 'dependent' status were independently and significantly associated with high care cost.


Asunto(s)
Actividades Cotidianas , Enfermedad de Alzheimer/fisiopatología , Costo de Enfermedad , Perfil de Impacto de Enfermedad , Enfermedad de Alzheimer/economía , Enfermedad de Alzheimer/epidemiología , Cuidadores , Progresión de la Enfermedad , Humanos , Estudios Longitudinales , Estudios Prospectivos , Encuestas y Cuestionarios , Reino Unido/epidemiología
15.
Br J Rheumatol ; 37(11): 1229-32, 1998 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-9851275

RESUMEN

The family of antiphospholipid antibodies (aPL) includes a heterogeneous population of autoantibodies whose specificity is directed against not only phospholipids, but their complex with plasma proteins. Anticardiolipin antibodies (aCL) and lupus anticoagulant (LA) tests are widely performed to screen the aPL family which is associated with thrombotic complications in patients with systemic lupus erythematosus (SLE) or antiphospholipid syndrome (APS). The clinical significance of other aPL tests, including antibodies against phosphatidylserine (aPS), phosphatidylinositol (aPI), phosphatidic acid (aPA), phosphatidylcholine (aPC) and phosphatidylethanolamine (aPE), has not been established. The purpose of this study was to evaluate whether multiple aPL tests have enhanced diagnostic value for APS. We tested IgG/M/A aPS, aPI, aPA, aPC and aPE by ELISA using 10% bovine serum as blocking and sample diluent in 26 SLE patients with clinical manifestations of APS, but negative for both aCL and LA (Group 1). The results were compared with 32 SLE patients without any features of APS (Group 2) and 24 SLE patients with APS (aCL and/or LA positive) (Group 3). In Group 1, 1/26 (4%) was positive for IgA aPE, less frequent than in other groups, and none of the patients had any other aPL. In Group 2, 1/32 (3%) was positive for aPS, two (6%) for aPI, one (3%) for aPA and four (12.5%) for aPE. None was positive for aPC. In the third group, 13/24 (54%) were positive for aPS, 11 (46%) for aPI, 15 (63%) for aPA, four (17%) for aPC and seven (29%) for aPE. Since aPE was found in some patients, we extended the study, including 207 SLE patients, and tested aPE. IgG/M/A aPE was found in six (3%), 10(5%) and 21 (10%), respectively, but no association was found between aPE and any clinical features of APS. This study suggests that screening by multiple aPL tests does not increase the diagnostic yield in APS.


Asunto(s)
Anticuerpos Antifosfolípidos/análisis , Síndrome Antifosfolípido/diagnóstico , Adolescente , Adulto , Anciano , Síndrome Antifosfolípido/inmunología , Niño , Diagnóstico Diferencial , Femenino , Humanos , Inhibidor de Coagulación del Lupus/análisis , Lupus Eritematoso Sistémico/inmunología , Masculino , Persona de Mediana Edad , Sensibilidad y Especificidad , Trombosis/etiología , Trombosis/inmunología
17.
Z Arztl Fortbild Qualitatssich ; 92(6): 415-9, 1998 Aug.
Artículo en Alemán | MEDLINE | ID: mdl-9757522

RESUMEN

Antiphospholipid syndrome (APS) is a thrombophilic disorder, which embraces almost all specialities. This article includes information about the history, classification, epidemiology, clinical manifestations and treatment of the APS. It is the aim of this article to introduce the APS with clinical features of all medical specialities to show the actuality of the syndrome which is not known everywhere.


Asunto(s)
Síndrome Antifosfolípido , Síndrome Antifosfolípido/diagnóstico , Síndrome Antifosfolípido/epidemiología , Síndrome Antifosfolípido/historia , Síndrome Antifosfolípido/terapia , Historia del Siglo XX , Humanos
18.
Prog Urol ; 8(1): 83-8, 1998 Feb.
Artículo en Francés | MEDLINE | ID: mdl-9533157

RESUMEN

OBJECTIVE: To evaluate the results of vascular accesses for chronic haemodialysis in elderly patients. MATERIAL AND METHODS: 56 consecutive vascular accesses for haemodialysis were performed from November 1993 to December 1995 in patients over the age of 65 years. The policy adopted was to prefer distal accesses: only forearm accesses, primary arteriovenous fistula (AVF) or radio-M venous bioprosthesis shunt (AVS) were performed. Surgical or interventional radiological reoperation rates and abandonment rates were evaluated. RESULTS: 13 AVF (mean age: 74.5 years) and 43 AVS (mean age: 73.8 years) were analysed. The mean number of reoperations was significantly higher in the shunt group. 1 out of 13 AVF was abandoned versus 9 out of 43 AVS (no significant difference). DISCUSSION: AVS gave poor results in terms of reoperation rate, inducing a high cost and impairment of the quality of life of these patients. Their survival in this population was comparable to that of AVF. Several teams prefer to perform first-line humero-cephalic or humero-basilic arteriovenous fistulas whenever a simple fistula in the forearm cannot be performed. They appear to give better results, but their use in the elderly is poorly evaluated. Peritoneal dialysis may be preferable to haemodialysis in the elderly. As vascular accesses are increasingly performed in elderly subjects with a reduced life expectancy, protection of the proximal venous capital does not appear to be a sufficient argument to justify the use of AVS in this population. CONCLUSION: This study encouraged us to abandon the use of prostheses in the forearm in favour of direct accesses in the arms.


Asunto(s)
Derivación Arteriovenosa Quirúrgica , Catéteres de Permanencia , Diálisis Renal/métodos , Factores de Edad , Anciano , Anciano de 80 o más Años , Derivación Arteriovenosa Quirúrgica/efectos adversos , Derivación Arteriovenosa Quirúrgica/economía , Bioprótesis , Prótesis Vascular/efectos adversos , Prótesis Vascular/economía , Catéteres de Permanencia/efectos adversos , Catéteres de Permanencia/economía , Constricción Patológica/etiología , Falla de Equipo , Estudios de Evaluación como Asunto , Antebrazo/irrigación sanguínea , Costos de la Atención en Salud , Humanos , Fallo Renal Crónico/terapia , Esperanza de Vida , Diálisis Peritoneal , Calidad de Vida , Radiología Intervencionista , Diálisis Renal/efectos adversos , Diálisis Renal/economía , Diálisis Renal/instrumentación , Reoperación , Trombosis/etiología
19.
J Rheumatol ; 25(4): 660-6, 1998 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-9558166

RESUMEN

OBJECTIVE: To investigate the prevalence of the 16/6 idiotype (16/6 Id), a major cross reactive idiotype of anti-DNA antibodies involved in the pathogenesis of experimental lupus, in subjects with an exogenous risk for the development of systemic lupus erythematosus (SLE). METHODS: The titer of 16/6 Id was determined by ELISA in sera of uranium miners exposed to heavy quartz dust: 15 developed definite and 12 probable SLE, 34 had clinical symptoms, and 27 had only serological signs (medium to high titer anti-dsDNA antibodies) of possible connective tissue disease (CTD) development. RESULTS: The prevalence of 16/6 Id was higher in all groups compared to healthy blood donors. It was 18.5% in miners with SLE (definite and probable) and 22.2-26.5% in miners with clinical and/or serological signs for developing CTD. All 16/6 Id positive miners were positive for anti-dsDNA antibodies and other autoantibodies associated with CTD. The prevalence of 16/6 Id in anti-dsDNA positive miners correlated slightly with CTD/SLE symptoms: 55.6% in patients with SLE, 47.4% in miners with possible CTD/SLE, and 22.2% in miners without CTD symptoms. Further, at short term followup, disease progressed in 2 miners of the 16/6 Id positive, but not in 16/6 Id negative miners. CONCLUSION: The detection of 16/6 Id in miners exposed to quartz dust may indicate a higher risk for development of SLE, warranting further studies of the role of 16/6 Id in the development of SLE in a cohort with the same sex, ethnicity, geographic region, and occupation.


Asunto(s)
Anticuerpos Antinucleares/sangre , Lupus Eritematoso Sistémico/inmunología , Minería , Cuarzo/efectos adversos , Uranio/efectos adversos , Anciano , Enfermedades del Tejido Conjuntivo/inmunología , Polvo/efectos adversos , Humanos , Masculino , Persona de Mediana Edad , Enfermedades Profesionales/inducido químicamente
20.
Pflugers Arch ; 429(3): 355-63, 1995 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-7539125

RESUMEN

The elementary K+ conductance activated by the cAMP or the Ca2+ second messenger pathways was investigated in the model salt-secreting epithelium, the human T84 cell line. Under Cl(-)-free conditions, an inwardly rectifying whole-cell K+ current was evoked by either forskolin 10 (mumol/l) or acetylcholine 1 (mumol/l) and blocked by extracellular charybdotoxin 10 (nmol/l). In the cell-attached mode, both secretory agonists induced the opening of a channel showing inward rectification with a unitary chord conductance of 36.8 +/- 2.5 pS (n = 26) for inward currents. In inside-out patches, a 35-pS inwardly rectifying K+ channel that corresponded to the channel recorded in the cell-attached configuration was recorded in the presence of 0.3 mumol/l free Ca2+ at the inner side of the membrane. This channel was blocked by Ba2+ (5 mumol/l) and by charybdotoxin (50 nmol/l). Its open probability was enhanced by intracellular Ca2+ with and EC50 of 0.25 mumol/l and strongly reduced by intracellular MgATP with an IC50 of 600 mumol/l. In the continuous presence of ATP, the channel activity was consistently increased by 125 kU/l catalytic subunit of cAMP-dependent protein kinase. In the cystic fibrosis pancreatic duct cell line CFPAC-1, a K+ channel was also recorded, with similar characteristics and regulation as the 35-pS channel in T84 cells. We conclude that an ATP-sensitive K+ channel regulated by intracellular Ca2+ and phosphorylation supports the main K+ current activated by secretory agonists in normal cystic fibrosis cell lines.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Adenosina Trifosfato/farmacología , Calcio/fisiología , Fibrosis Quística/metabolismo , Canales de Potasio/metabolismo , Acetilcolina/farmacología , Bario/farmacología , Biotransformación/efectos de los fármacos , Línea Celular , Caribdotoxina , Colforsina/farmacología , Regulador de Conductancia de Transmembrana de Fibrosis Quística , Células Epiteliales , Epitelio/efectos de los fármacos , Epitelio/metabolismo , Humanos , Ionomicina/farmacología , Proteínas de la Membrana/genética , Proteínas de la Membrana/metabolismo , Técnicas de Placa-Clamp , Fosforilación , Canales de Potasio/efectos de los fármacos , Canales de Potasio/fisiología , Venenos de Escorpión/farmacología
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