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1.
Health Expect ; 27(3): e14119, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38879785

RESUMEN

BACKGROUND: People with severe mental illness (SMI) experience higher rates and poorer outcomes of physical long-term conditions (LTCs). The management of SMI and LTCs is highly complex and many people with SMI rely on informal carers for support, which may lead to high levels of caregiver burden, and caregiver burnout. Caregiver burnout can result in poor health outcomes for informal carers and a reduction in the quality of care they are able to provide. Therefore, it is important to understand the caring experience to identify and address factors that contribute to burden and burnout. METHODS: This paper reports a secondary qualitative analysis of semistructured interviews and focus groups conducted with informal carers of people who have coexisting SMI and LTCs. We recruited 12 informal carers in England between December 2018 and April 2019. The transcripts were coded and analysed thematically. RESULTS: We identified two overarching themes and five subthemes. The themes included 'Fighting on all fronts: Mounting strain between demands and resources', which described the challenge of providing care in the context of coexisting SMI and LTCs, and 'Safekeeping: The necessity of chronic hypervigilance', which captured how informal carers' roles were defined by managing high-risk situations, leading to hypervigilance and paternalistic approaches to care. CONCLUSION: The experience of informal carers for people with SMI and coexisting LTCs is marked by limited access to support and the management of significant risk, which could contribute to high caregiver burden. Further primary research is needed to understand how the experiences of the caregiver role for people with SMI and LTCs influence caregiver burden. PATIENT OR PUBLIC CONTRIBUTION: Our PPI panel DIAMONDS Voice provided guidance on this study from conception, design and development of interview guides and recruitment materials to final write-up. DIAMONDS Voice consists of service users and carers who have experience of SMI and LTCs. Three carer members reviewed the final manuscript, and two are credited as authors.


Asunto(s)
Cuidadores , Trastornos Mentales , Investigación Cualitativa , Humanos , Cuidadores/psicología , Femenino , Masculino , Persona de Mediana Edad , Enfermedad Crónica , Adulto , Grupos Focales , Inglaterra , Entrevistas como Asunto , Anciano
2.
BMC Psychiatry ; 22(1): 479, 2022 07 19.
Artículo en Inglés | MEDLINE | ID: mdl-35850709

RESUMEN

BACKGROUND: People with severe mental illness (SMI), such as schizophrenia, have higher rates of physical long-term conditions (LTCs), poorer health outcomes, and shorter life expectancy compared with the general population. Previous research exploring SMI and diabetes highlights that people with SMI experience barriers to self-management, a key component of care in long-term conditions; however, this has not been investigated in the context of other LTCs. The aim of this study was to explore the lived experience of co-existing SMI and LTCs for service users, carers, and healthcare professionals. METHODS: A qualitative study with people with SMI and LTCs, their carers, and healthcare professionals, using semi-structured interviews, focused observations, and focus groups across the UK. Forty-one interviews and five focus groups were conducted between December 2018 and April 2019. Transcripts were coded by two authors and analysed thematically. RESULTS: Three themes were identified, 1) the precarious nature of living with SMI, 2) the circularity of life with SMI and LTCs, and 3) the constellation of support for self-management. People with co-existing SMI and LTCs often experience substantial difficulties with self-management of their health due to the competing demands of their psychiatric symptoms and treatment, social circumstances, and access to support. Multiple long-term conditions add to the burden of self-management. Social support, alongside person-centred professional care, is a key facilitator for managing health. An integrated approach to both mental and physical healthcare was suggested to meet service user and carer needs. CONCLUSION: The demands of living with SMI present a substantial barrier to self-management for multiple co-existing LTCs. It is important that people with SMI can access person-centred, tailored support for their LTCs that takes into consideration individual circumstances and priorities.


Asunto(s)
Trastornos Mentales , Automanejo , Cuidadores , Atención a la Salud , Personal de Salud , Humanos , Trastornos Mentales/complicaciones , Trastornos Mentales/diagnóstico , Trastornos Mentales/terapia , Investigación Cualitativa
3.
Neurosurg Rev ; 42(1): 73-83, 2019 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-28879421

RESUMEN

The work performed in Dr. Rhoton's Lab, represented by over 500 publications on microneurosurgical anatomy, greatly contributed to improving the level of neurosurgical treatment throughout the world. The authors reviewed the development and activities of the Lab over 40 years. Dr. Albert L. Rhoton Jr., the founder of, and leader in, this field, displayed great creativity and ingenuity during his life. He devoted himself to perfecting his study methodology, employing high-definition photos and slides to enhance the quality of his published papers. He dedicated his life to the education of neurosurgeons. His "lab team," which included microneuroanatomy research fellows, medical illustrators, lab directors, and secretaries, worked together under his leadership to develop the methods and techniques of anatomical study to complete over 160 microneurosurgical anatomy projects. The medical illustrators adapted computer technologies and integrated art and science in the field of microneurosurgical anatomy. Dr. Rhoton's fellows established methods of injecting colors and pursued a series of projects to innovate surgical approaches and instruments over a 40-year period. They also continued to help Dr. Rhoton to conduct international educational activities after returning to their home countries. Rhoton's Lab became a world-renowned anatomical lab as well as a microsurgical training center and generated the knowledge necessary to perform accurate, gentle, and safe surgery for the sake of patients.


Asunto(s)
Laboratorios/historia , Procedimientos Neuroquirúrgicos/historia , Historia del Siglo XX , Humanos
4.
Dis Esophagus ; 29(8): 1152-1158, 2016 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26663741

RESUMEN

The prognosis for locally advanced esophageal cancer is poor despite the use of trimodality therapy. In this phase II study, we report the feasibility, tolerability and efficacy of adjuvant sunitinib. Included were patients with stage IIa, IIB or III cancer of the thoracic esophagus or gastroesophageal junction. Neoadjuvant therapy involved Irinotecan (65 mg/m2 ) + Cisplatin (30 mg/m2 ) on weeks 1 and 2, 4 and 5, 7 and 8 with concurrent radiation (50Gy/25 fractions) on weeks 4-8. Sunitinib was commenced 4-13 weeks after surgery and continued for one year. Sixty-one patients were included in the final analysis, 36 patients commenced adjuvant sunitinib. Fourteen patients discontinued sunitinib due to disease recurrence (39%) within the 12-month period, 12 (33%) discontinued due to toxicity, and 3 (8%) requested cessation of therapy. In the overall population, median survival was 26 months with a 2 and 3-year survival rate of 52% and 35%, respectively. The median survival for the 36 patients treated with sunitinib was 35 months and 2-year survival probability of 68%. In a historical control, a prior phase II study with the same trimodality therapy (n = 43), median survival was 36 months, with a 2-year survival of 67%. Initiation of adjuvant sunitinib is feasible, but poorly tolerated, with no signal of additional benefit over trimodality therapy for locally advanced esophageal cancer.


Asunto(s)
Antineoplásicos/administración & dosificación , Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Neoplasias Esofágicas/terapia , Indoles/administración & dosificación , Pirroles/administración & dosificación , Adulto , Anciano , Antineoplásicos/efectos adversos , Quimioradioterapia , Quimioterapia Adyuvante/mortalidad , Cisplatino/administración & dosificación , Neoplasias Esofágicas/mortalidad , Neoplasias Esofágicas/patología , Esofagectomía , Unión Esofagogástrica/patología , Estudios de Factibilidad , Femenino , Humanos , Indoles/efectos adversos , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Recurrencia Local de Neoplasia/mortalidad , Estadificación de Neoplasias , Periodo Posoperatorio , Pirroles/efectos adversos , Sunitinib , Tasa de Supervivencia , Privación de Tratamiento/estadística & datos numéricos
5.
Dis Esophagus ; 27(6): 552-9, 2014 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23121504

RESUMEN

Neoadjuvant chemoradiotherapy (CRT) before surgery results in a pathological complete response (pCR) rate in about 1/3 of the patients, which is correlated with survival. It was hypothesized that volumetric tumor response to CRT would correlate with outcomes. Patients who completed trimodality therapy, where planning, pre-, and post-CRT computed tomography scans were available, and pathology was reviewed by a central pathologist, were eligible for analysis. Absolute and relative tumor volume change pretreatment and post-treatment were correlated with pCR, locoregional recurrence (LRR), disease-free survival, and overall survival. Fifty-six patients were analyzed. pCR was observed in 30% of patients. Median follow up was 20.3 (range 4-89) months. The 2- and 4-year overall survival was 61.3% (95% confidence interval [CI]: 45-74) and 25.0% (95%CI: 11-41); proportion disease free was 32.1% (95% CI: 19-46) and 20.6% (9-36) at 2 and 4 years, respectively. The median relative volume reduction was 17% (95% CI: -24, -3%). Using 20% as the criteria, the proportion of patients with pCR of ≥20% versus <20% was 13/25 (52%) versus 4/31 (13%) for those who did not (odds ratio 7.3; 95% CI: 2-27). The LRR at 2 and 4 years were 29.5% (95% CI: 16-43) and 36.2% (95% CI: 23-50). The relative tumor reduction ≥20% was significantly correlated with LRR (hazard ratio 0.24; 95% CI: 0.07-0.8; p 0.02) at 2 and 4 years, respectively. Relative tumor volume reduction following CRT is correlated with pCR and LRR. Further investigations are warranted to examine the effect of volume change, alone or in conjunction with other factors as potential predictors for pathological response.


Asunto(s)
Adenocarcinoma/patología , Adenocarcinoma/terapia , Quimioradioterapia Adyuvante , Neoplasias Esofágicas/patología , Neoplasias Esofágicas/terapia , Recurrencia Local de Neoplasia/patología , Adenocarcinoma/diagnóstico por imagen , Adulto , Anciano , Supervivencia sin Enfermedad , Neoplasias Esofágicas/diagnóstico por imagen , Esofagectomía , Femenino , Estudios de Seguimiento , Humanos , Masculino , Persona de Mediana Edad , Terapia Neoadyuvante , Tomografía de Emisión de Positrones , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Tasa de Supervivencia , Tomografía Computarizada por Rayos X , Carga Tumoral
6.
J Clin Oncol ; 41(2): 154-162, 2023 01 10.
Artículo en Inglés | MEDLINE | ID: mdl-36603541

RESUMEN

PURPOSE: The CD20 antigen is expressed on more than 90% of B-cell lymphomas. It is appealing for targeted therapy, because it does not shed or modulate. A chimeric monoclonal antibody more effectively mediates host effector functions and is itself less immunogenic than are murine antibodies. PATIENTS AND METHODS: This was a multiinstitutional trial of the chimeric anti-CD20 antibody, IDEC-C2B8. Patients with relapsed low grade or follicular lymphoma received an outpatient treatment course of IDEC-C2B8 375 mg/m2 intravenously weekly for four doses. RESULTS: From 31 centers, 166 patients were entered. Of this intent-to-treat group, 48% responded. With a median follow-up duration of 11.8 months, the projected median time to progression for responders is 13.0 months. Serum antibody levels were sustained longer after the fourth infusion than after the first, and were higher in responders and in patients with lower tumor burden. The majority of adverse events occurred during the first infusion and were grade 1 or 2; fever and chills were the most common events. Only 12% of patients had grade 3 and 3% grade 4 toxicities. A human antichimeric antibody was detected in only one patient. CONCLUSION: The response rate of 48% with IDEC-C2B8 is comparable to results with single-agent cytotoxic chemotherapy. Toxicity was mild. Attention needs to be paid to the rate of antibody infusion, with titration according to toxicity. Further investigation of this agent is warranted, including its use in conjunction with standard chemotherapy.

7.
Hippocampus ; 22(10): 2080-93, 2012 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-22987683

RESUMEN

Object recognition memory requires the perirhinal cortex (PRC) and this cognitive function declines during normal aging. Recent electrophysiological recordings from young rats have shown that neurons in Layer V of the PRC are activated by three-dimensional objects. Thus, it is possible that age-related object recognition deficits result from alterations in PRC neuron activity in older animals. To examine this, the present study used cellular compartment analysis of temporal activity by fluorescence in situ hybridization (catFISH) with confocal microscopy to monitor cellular distributions of activity-induced Arc RNA in layer V of the PRC. Activity was monitored during two distinct epochs of object exploration. In one group of rats (6 young/6 aged) animals were placed in a familiar testing arena and allowed to explore five different three-dimensional objects for two 5-min sessions separated by a 20-min rest (AA). The second group of animals (6 young/6 aged) also explored the same objects for two 5-min sessions, but the environment was changed between the first and the second epoch (AB). Behavioral data showed that both age groups spent less time exploring objects during the second epoch, even when the environment changed, indicating successful recognition. Although the proportion of active neurons between epochs did not change in the AA group, in the AB group more neurons were active during epoch 2 of object exploration. This recruitment of neurons into the active neural ensemble could serve to signal that familiar stimuli are being encountered in a new context. When numbers of Arc positive neurons were compared between age groups, the old rats had significantly lower proportions of Arc-positive PRC neurons in both the AA and AB behavioral conditions. These data support the hypothesis that age-associated functional alterations in the PRC contribute to declines in stimulus recognition over the lifespan.


Asunto(s)
Envejecimiento/fisiología , Corteza Cerebral/fisiología , Conducta Exploratoria/fisiología , Factores de Edad , Animales , Corteza Cerebral/citología , Aprendizaje por Laberinto/fisiología , Neuronas/fisiología , Ratas , Ratas Endogámicas F344 , Reconocimiento en Psicología/fisiología
8.
J Microsc ; 243(2): 154-71, 2011 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-21361958

RESUMEN

The need to map regions of brain tissue that are much wider than the field of view of the microscope arises frequently. One common approach is to collect a series of overlapping partial views, and align them to synthesize a montage covering the entire region of interest. We present a method that advances this approach in multiple ways. Our method (1) produces a globally consistent joint registration of an unorganized collection of three-dimensional (3-D) multi-channel images with or without stage micrometer data; (2) produces accurate registrations withstanding changes in scale, rotation, translation and shear by using a 3-D affine transformation model; (3) achieves complete automation, and does not require any parameter settings; (4) handles low and variable overlaps (5-15%) between adjacent images, minimizing the number of images required to cover a tissue region; (5) has the self-diagnostic ability to recognize registration failures instead of delivering incorrect results; (6) can handle a broad range of biological images by exploiting generic alignment cues from multiple fluorescence channels without requiring segmentation and (7) is computationally efficient enough to run on desktop computers regardless of the number of images. The algorithm was tested with several tissue samples of at least 50 image tiles, involving over 5000 image pairs. It correctly registered all image pairs with an overlap greater than 7%, correctly recognized all failures, and successfully joint-registered all images for all tissue samples studied. This algorithm is disseminated freely to the community as included with the Fluorescence Association Rules for Multi-Dimensional Insight toolkit for microscopy (http://www.farsight-toolkit.org).


Asunto(s)
Algoritmos , Mapeo Encefálico/métodos , Encéfalo/fisiología , Procesamiento de Imagen Asistido por Computador/métodos , Imagenología Tridimensional/métodos , Animales , Encéfalo/ultraestructura , Mapeo Encefálico/instrumentación , Microscopía Confocal/métodos , Modelos Biológicos , Ratas , Sensibilidad y Especificidad
11.
J Spinal Disord Tech ; 22(3): 202-6, 2009 May.
Artículo en Inglés | MEDLINE | ID: mdl-19412023

RESUMEN

STUDY DESIGN: A retrospective review was performed to determine the outcomes of patients with cauda equina syndrome (CES) from a herniated lumbar disc at our institutions. OBJECTIVE: CES from lumbar herniated discs is considered the only absolute indication for surgery. It is considered a neurosurgical emergency with the outcome related to how quickly it is diagnosed and treated. The results of recovery of bladder function are felt by many authors to be related to early diagnosis and surgical intervention. Most authors recommend a wide decompressive laminectomy when surgery is performed. We reviewed our cases to determine if they conformed to these assumptions. SUMMARY OF BACKGROUND DATA: Although many articles regarding the outcome of CES from herniated lumbar discs suggest that early surgery is superior to surgery that is delayed, others have demonstrated no correlation between time-to-surgery and chances for recovery of neurologic and bladder function. METHODS: A retrospective review of all patients with lumbar herniated discs and CES from the years 1985 to 2004 was carried out. There were 31 patients, 28 of whom had bladder incontinence or retention requiring catheterization. Six patients were operated within 24 hours, 8 between 24 and 48 hours, and 17 after 48 hours (range: 60 h to 2 wk). Average follow-up was 5 years. RESULTS: Twenty-seven of these patients regained continence not requiring catheterization. There was no correlation between the time-to-surgery and recovery of bladder function. There was also no correlation between the time-to-surgery and recovery of motor and sensory function. The majority of patients underwent unilateral hemilaminotomy or bilateral hemilaminotomies; decompressive laminectomy was reserved for patients with underlying spinal stenosis or posteriorly herniated fragments. All of the patients were relieved of their radicular pain. CONCLUSIONS: In our series of patients with CES and bladder incontinence or retention, over 90% regained continence. Recovery of function was not related to the time to surgical intervention. The majority of the patients were adequately treated without the need for a complete laminectomy.


Asunto(s)
Cauda Equina/patología , Desplazamiento del Disco Intervertebral/complicaciones , Desplazamiento del Disco Intervertebral/patología , Vértebras Lumbares/patología , Polirradiculopatía/etiología , Polirradiculopatía/patología , Adulto , Anciano , Cauda Equina/fisiopatología , Cauda Equina/cirugía , Descompresión Quirúrgica/métodos , Descompresión Quirúrgica/estadística & datos numéricos , Servicios Médicos de Urgencia/normas , Servicios Médicos de Urgencia/estadística & datos numéricos , Femenino , Humanos , Laminectomía/métodos , Laminectomía/estadística & datos numéricos , Vértebras Lumbares/cirugía , Masculino , Persona de Mediana Edad , Procedimientos Neuroquirúrgicos/métodos , Procedimientos Neuroquirúrgicos/estadística & datos numéricos , Evaluación de Resultado en la Atención de Salud , Polirradiculopatía/fisiopatología , Radiculopatía/etiología , Radiculopatía/fisiopatología , Radiculopatía/cirugía , Recuperación de la Función/fisiología , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento , Vejiga Urinaria Neurogénica/etiología , Vejiga Urinaria Neurogénica/fisiopatología , Vejiga Urinaria Neurogénica/cirugía , Cateterismo Urinario/estadística & datos numéricos , Adulto Joven
13.
J Neurosurg ; 129(5): 1331-1341, 2018 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-29393756

RESUMEN

The authors chronologically categorized the 160 original articles written by Dr. Rhoton and his fellows to show why they selected their themes and how they carried out their projects. The authors note that as neurosurgery progresses and new techniques and approaches are developed, accurate and safe treatment will depend upon continued clarification of microsurgical anatomy.


Asunto(s)
Neurocirugia/historia , Historia del Siglo XX , Humanos , Microcirugia/historia , Procedimientos Neuroquirúrgicos/historia
14.
Oper Neurosurg (Hagerstown) ; 14(5): 563-571, 2018 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-28973522

RESUMEN

BACKGROUND: Advances in diagnosis of posterior inferior cerebellar artery (PICA) aneurysms have revealed the high frequency of distal and/or dissecting PICA aneurysms. Surgical treatment of such aneurysms often requires revascularization of the PICA including but not limited to its caudal loop. OBJECTIVE: To examine the microsurgical anatomy involved in occipital artery (OA)-PICA anastomosis at various anatomic segments of the PICA. METHODS: Twenty-eight PICAs in 15 cadaveric heads were examined with the operating microscope to take morphometric measurements and explore the specific anatomy of bypass procedures. RESULTS: OA bypass to the p2, p3, p4, or p5 segment was feasible with a recipient vessel of sufficient diameter. The loop wandering near the jugular foramen in the p2 segment provided sufficient length without requiring cauterization of any perforating arteries to the brainstem. Wide dissection of the cerebellomedullary fissure provided sufficient exposure for the examination of some p3 segments and all p4 segments hidden by the tonsil. OA-p5 bypass was placed at the main trunk before the bifurcation in 5 hemispheres and at the larger hemispheric trunk in others. CONCLUSION: Understanding the possible variations of OA-PICA bypass may enable revascularization of the appropriate portion of the PICA when the parent artery must be occluded. A detailed anatomic understanding of each segment clarifies important technical nuances for the bypass on each segment. Dissection of the cerebellomedullary fissure helps to achieve sufficient exposure for the bypass procedures on most of the segments.


Asunto(s)
Revascularización Cerebral/métodos , Arteria Vertebral/anatomía & histología , Anastomosis Quirúrgica , Variación Biológica Poblacional , Cerebelo/irrigación sanguínea , Humanos , Aneurisma Intracraneal/cirugía , Microcirugia/métodos , Lóbulo Occipital/irrigación sanguínea , Arteria Vertebral/cirugía
15.
J Autism Dev Disord ; 37(9): 1636-46, 2007 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-17180458

RESUMEN

This paper describes the development of a video-based evaluation tool for use in Rett syndrome (RTT). Components include a parent-report checklist, and video filming and coding protocols that contain items on eating, drinking, communication, hand function and movements, personal care and mobility. Ninety-seven of the 169 families who initially agreed to participate returned a videotape within 8 months of the first request. Subjects whose videos were returned had a similar age profile to those who did not provide a video but were more likely to have classical than atypical RTT. Evidence of the content and social validity and inter-rater reliability on 11 videos is provided. Video may provide detailed, objective assessment of function and behaviour in RTT.


Asunto(s)
Síndrome de Rett/diagnóstico , Grabación de Cinta de Video , Adolescente , Adulto , Niño , Diagnóstico Diferencial , Estudios de Factibilidad , Femenino , Humanos , Masculino , Trastornos del Movimiento/diagnóstico , Trastornos del Movimiento/etiología , Fenotipo , Síndrome de Rett/complicaciones
16.
AJNR Am J Neuroradiol ; 27(10): 2179-90, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17110690

RESUMEN

BACKGROUND AND PURPOSE: The cause of "posterior reversible encephalopathy syndrome" (PRES) is not established. We recently encountered several patients who developed PRES in the setting of severe infection. In this study, we comprehensively reviewed the clinical and imaging features in a large cohort of patients who developed PRES, with particular attention to those with isolated infection, sepsis, or shock (I/S/S). METHODS: The clinical/imaging features of 106 patients who developed PRES were comprehensively evaluated. In 25 of these patients, PRES occurred in association with severe I/S/S separate from transplantation. The clinical/imaging features (computer tomography, MR imaging, and MR angiography [MRA]) of the patients with I/S/S were further evaluated, including organ/tissue/blood culture results, mean arterial blood pressure (MAP) at toxicity, extent of cerebral edema, and presence of vasospasm. RESULTS: PRES occurred in association with I/S/S in 25 of 106 patients (23.6%), in addition to 4 other major clinical settings, including cyclosporine/FK-506 (post-transplant) neurotoxicity (46.2%), autoimmune disease (10.4%), postchemotherapy (3.7%), and eclampsia (10.4%). In the 25 patients with I/S/S, available cultures demonstrated a predominance of gram-positive organisms (84%). Blood pressure was "normal" at toxicity in 10 patients (MAP, 95 mm Hg); "severe" hypertension was present in 15 patients (MAP, 137 mm Hg). Extent of brain edema graded on imaging studies was greater in the normal MAP group compared with the severe hypertension group (P < .05). MRA demonstrated vasospasm in patients with severe hypertension and vessel "pruning" in the normal MAP group. CONCLUSION: Infection/sepsis/shock may be an important cause of PRES, particularly in relation to infection with gram-positive organisms.


Asunto(s)
Edema Encefálico/diagnóstico , Edema Encefálico/etiología , Infecciones por Bacterias Grampositivas/complicaciones , Sepsis/complicaciones , Choque Séptico/complicaciones , Adolescente , Adulto , Anciano , Encefalopatías/diagnóstico , Encefalopatías/etiología , Femenino , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Síndrome , Tomografía Computarizada por Rayos X
17.
Bone Marrow Transplant ; 51(4): 573-80, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26726945

RESUMEN

Pneumocystis jiroveci pneumonia (PJP) is associated with high morbidity and mortality after hematopoietic stem cell transplantation (HSCT). Little is known about PJP infections after HSCT because of the rarity of disease given routine prophylaxis. We report the results of a Center for International Blood and Marrow Transplant Research study evaluating the incidence, timing, prophylaxis agents, risk factors and mortality of PJP after autologous (auto) and allogeneic (allo) HSCT. Between 1995 and 2005, 0.63% allo recipients and 0.28% auto recipients of first HSCT developed PJP. Cases occurred as early as 30 days to beyond a year after allo HSCT. A nested case cohort analysis with supplemental data (n=68 allo cases, n=111 allo controls) revealed that risk factors for PJP infection included lymphopenia and mismatch after HSCT. After allo or auto HSCT, overall survival was significantly poorer among cases vs controls (P=0.0004). After controlling for significant variables, the proportional hazards model revealed that PJP cases were 6.87 times more likely to die vs matched controls (P<0.0001). We conclude PJP infection is rare after HSCT but is associated with high mortality. Factors associated with GVHD and with poor immune reconstitution are among the risk factors for PJP and suggest that protracted prophylaxis for PJP in high-risk HSCT recipients may improve outcomes.


Asunto(s)
Trasplante de Células Madre Hematopoyéticas , Pneumocystis carinii , Neumonía por Pneumocystis , Aloinjertos , Autoinjertos , Femenino , Humanos , Incidencia , Masculino , Neumonía por Pneumocystis/etiología , Neumonía por Pneumocystis/mortalidad , Neumonía por Pneumocystis/prevención & control , Factores de Riesgo
18.
J Clin Oncol ; 16(8): 2825-33, 1998 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-9704735

RESUMEN

PURPOSE: The CD20 antigen is expressed on more than 90% of B-cell lymphomas. It is appealing for targeted therapy, because it does not shed or modulate. A chimeric monoclonal antibody more effectively mediates host effector functions and is itself less immunogenic than are murine antibodies. PATIENTS AND METHODS: This was a multiinstitutional trial of the chimeric anti-CD20 antibody, IDEC-C2B8. Patients with relapsed low grade or follicular lymphoma received an outpatient treatment course of IDEC-C2B8 375 mg/m2 intravenously weekly for four doses. RESULTS: From 31 centers, 166 patients were entered. Of this intent-to-treat group, 48% responded. With a median follow-up duration of 11.8 months, the projected median time to progression for responders is 13.0 months. Serum antibody levels were sustained longer after the fourth infusion than after the first, and were higher in responders and in patients with lower tumor burden. The majority of adverse events occurred during the first infusion and were grade 1 or 2; fever and chills were the most common events. Only 12% of patients had grade 3 and 3% grade 4 toxicities. A human antichimeric antibody was detected in only one patient. CONCLUSION: The response rate of 48% with IDEC-C2B8 is comparable to results with single-agent cytotoxic chemotherapy. Toxicity was mild. Attention needs to be paid to the rate of antibody infusion, with titration according to toxicity. Further investigation of this agent is warranted, including its use in conjunction with standard chemotherapy.


Asunto(s)
Anticuerpos Monoclonales/administración & dosificación , Antineoplásicos/administración & dosificación , Linfoma de Células B/terapia , Adulto , Anciano , Anticuerpos Monoclonales/efectos adversos , Anticuerpos Monoclonales de Origen Murino , Antígenos CD20/inmunología , Progresión de la Enfermedad , Esquema de Medicación , Femenino , Humanos , Linfoma Folicular/terapia , Linfoma no Hodgkin/terapia , Masculino , Persona de Mediana Edad , Recurrencia , Rituximab
19.
Diabetes ; 31(10): 862-6, 1982 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-7152125

RESUMEN

This article examines the risk of type I (insulin-dependent) diabetes in siblings of affected children, in relation to HLA genotypes. The 288 available siblings of 160 diabetic probands were grouped according to the number of HLA haplotypes in common with their probands. HLA-identical siblings (both haplotypes in common) have an approximately 100 times greater risk of developing the disease than that in the general population, and this risk is significantly higher than that in haplo-identical siblings (one haplotype in common) P = 0.008). Thus, in Northern European populations, some 30% of HLA-identical siblings are expected to be diabetic by the age of 30 yr. The risk in nonidentical siblings (neither haplotype in common) is not significantly increased. These findings carry implications for genetic counseling and research.


Asunto(s)
Diabetes Mellitus/genética , Adolescente , Adulto , Niño , Preescolar , Diabetes Mellitus/epidemiología , Europa (Continente) , Femenino , Antígenos HLA/genética , Prueba de Histocompatibilidad , Humanos , Lactante , Recién Nacido , Masculino , Persona de Mediana Edad , Riesgo
20.
J Am Coll Cardiol ; 4(4): 812-9, 1984 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-6481020

RESUMEN

During a period of 18 months beginning in January 1982, a total of 65 patients were referred to the Miami Heart Institute for evaluation of either aborted out of hospital sudden death, ventricular tachycardia resistant to standard clinically directed antiarrhythmic medication programs or high grade ventricular arrhythmia (Lown class greater than or equal to IV B) with or without syncope. After complete evaluation including cardiac catheterization in all but 1 patient, 17 patients were identified in whom no obvious cardiac disease could be found. Twelve of the 17 underwent right ventricular endomyocardial biopsy. Six of the 12 biopsies demonstrated clinically unsuspected lymphocytic myocarditis (Group A). Findings in three of the remaining six biopsies were consistent with an early cardiomyopathy and in three were completely normal (Group B). Retrospective review of the clinical, laboratory, electrophysiologic, hemodynamic and angiographic data failed to identify a marker that reliably separated Group A from Group B patients. In addition to antiarrhythmic therapy guided by laboratory electrophysiologic study, all Group A patients were treated with prednisone and azathioprine. After 6 months of immunosuppression, all patients with myocarditis were reevaluated in the hospital without antiarrhythmic medication. Ventricular tachycardia/fibrillation could not be provoked in the laboratory during repeat electrophysiologic testing in five of the six patients. Repeat myocardial biopsy after all immunosuppressive therapy had been discontinued revealed absence of inflammation associated with varying degrees of residual interstitial fibrosis. There were no deaths. It was concluded that a patient with an otherwise clinically silent lymphocytic myocarditis can present with potentially life-threatening ventricular arrhythmias.(ABSTRACT TRUNCATED AT 250 WORDS)


Asunto(s)
Arritmias Cardíacas/etiología , Biopsia , Terapia de Inmunosupresión , Miocarditis/diagnóstico , Miocardio/patología , Adolescente , Adulto , Anciano , Arritmias Cardíacas/patología , Arritmias Cardíacas/fisiopatología , Azatioprina/uso terapéutico , Cateterismo Cardíaco , Electrocardiografía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Miocarditis/complicaciones , Miocarditis/tratamiento farmacológico , Miocarditis/patología , Miocarditis/fisiopatología , Prednisona/uso terapéutico
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