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2.
Clin Ther ; 39(9): 1811-1826, 2017 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-28803702

RESUMO

PURPOSE: This two-part study comprised two descriptive, cross-sectional surveys to evaluate treatment satisfaction among patients with systemic lupus erythematosus (SLE) and their physicians from US clinical practices. The Lupus Plus Project (LPP; part one) involved belimumab-containing regimens; the Disease Specific Program (DSP; part two) included all treatments and was designed to build on the body of evidence from part one. METHODS: The LPP recruited patients receiving belimumab, and comprised 2 paper questionnaires: a patient self-completion questionnaire (PSC) and a patient record form (PRF) completed by the physician. The DSP enrolled patients with SLE receiving any treatment and comprised four parts: a PSC, a PRF completed by the physician after patient consultation, face-to-face physician interviews, and a workload form completed by the physicians to indicate their total SLE patient workload. The key objective of this study was to assess physician and patient satisfaction with current treatment. FINDINGS: From the PSCs, data regarding patient-reported satisfaction with current treatment were available for 263 patients who were receiving belimumab combination therapy (LPP) and 250 patients who were receiving non-belimumab treatment (DSP). The majority of patients (belimumab, 86.3% [227/263]; non-belimumab, 78.4% [196/250]) responded positively (at least "somewhat satisfied") when asked about current treatment satisfaction, as did physicians (belimumab, 82.9% [311/375]; non-belimumab, 74.3% [326/439]). In multivariate analysis, factors most strongly associated with patient-reported satisfaction for patients receiving belimumab were patient-reported improvements in leisure activities since taking belimumab (odds ratio [OR] = 4.66), physician-reported improvements in fatigue (OR = 3.72), patient-reported improvements in general symptoms (OR = 3.02), and pain/achiness (OR = 2.71). Physician satisfaction was associated with clinical outcome such as improvements in pain/achiness (OR = 6.16), fatigue (OR = 3.76), and patient-reported satisfaction with treatment frequency (OR = 3.91). In patients receiving other SLE treatments, dosing frequency of current treatment (OR = 3.64) and a reduction in fatigue severity (OR = 3.61) were most strongly associated with patient-reported satisfaction; physician satisfaction was most strongly associated with a reduction in fatigue (OR = 6.22) and current remission status (OR = 6.05). IMPLICATIONS: When considering SLE treatment satisfaction patients tend to consider impact on daily functioning, whereas physicians take into account a wider range of clinical outcomes; however, both strongly consider improvements in fatigue. These surveys provide insights into treatment satisfaction among prescribers and patients with SLE. GSK-ClinicalStudyRegister.com identifiers: GSK study 202146 [HO 15-15509] and 205086 [HO 15-16709].


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Imunossupressores/uso terapêutico , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Satisfação do Paciente , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Fadiga/tratamento farmacológico , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Razão de Chances , Dor/tratamento farmacológico , Satisfação Pessoal , Médicos , Inquéritos e Questionários , Resultado do Tratamento , Estados Unidos , Adulto Jovem
3.
Health Qual Life Outcomes ; 15(1): 43, 2017 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-28245854

RESUMO

BACKGROUND: Oral glucocorticoids (steroids) are the mainstay of treatment for systemic lupus erythematosus (SLE), but their use is often associated with short- and long-term side effects. Following a literature review and discussions with patients with SLE, clinicians, and payers, a need was identified for a comprehensive SLE-specific tool that can be used to evaluate the side effects and benefits of steroids over time from a patient perspective. The objective of this study was to develop a patient-reported outcome (PRO) measure to assess general impact (baseline burden), benefits, side effects, and impacts associated with the use of oral steroids in patients with SLE. METHODS: A qualitative research protocol was developed in which adults with SLE currently receiving or who had received steroids in the past year were recruited from six US rheumatology practices to participate in concept elicitation (CE) interviews. The SLE Steroid Questionnaire (SSQ) was developed based on CE interview results and clinical input. Cognitive debriefing interviews with a second group of patients with SLE evaluated the content, clarity, and relevance of the items. The SSQ was refined using patient feedback, clinician review, and a translatability assessment. The protocol received central independent review board approval. RESULTS: Thirty-three patients (52% moderate disease severity; 58% currently receiving steroids, mean dose 8.7 mg/day) completed CE interviews. Patients reported benefits, side effects, and impacts from steroids. The refined SSQ contains 50 items assessing steroid dose/duration (4 items), general impact (baseline burden; 19 items), benefits (7 items), work/productivity (3 items), side effects (10 items), emotions (6 items), and overall satisfaction (1 item). CONCLUSION: The SSQ is a unique PRO, developed using robust scientific methodology in accordance with the Food and Drug Administration PRO Guidance. It was designed to comprehensively assess the patient experience with steroid therapy and better understand the benefits and burden of steroids for patients with SLE.


Assuntos
Glucocorticoides/uso terapêutico , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Lúpus Eritematoso Sistêmico/psicologia , Medidas de Resultados Relatados pelo Paciente , Inquéritos e Questionários/normas , Adulto , Feminino , Indicadores Básicos de Saúde , Humanos , Lúpus Eritematoso Sistêmico/complicações , Masculino , Pessoa de Meia-Idade , Psicometria , Pesquisa Qualitativa , Qualidade de Vida/psicologia
4.
J Clin Rheumatol ; 23(2): 94-101, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28225511

RESUMO

OBJECTIVE: The aim of this study was to develop a patient-reported outcome measure specific for systemic lupus erythematosus (SLE) to assess patient satisfaction with treatment, treatment options, and medical care. METHODS: Patients with SLE were recruited from four US rheumatology practices. Concept elicitation interviews identified aspects that patients considered important and relevant regarding satisfaction with treatment and medical care. Concept elicitation interviews and clinical input were used to draft the Lupus Satisfaction Questionnaire (LSQ). A second cohort of patients with SLE participated in combined concept elicitation/cognitive debriefing interviews, after which the LSQ was revised. RESULTS: Fourteen patients completed concept elicitation interviews: 93% were female, 57% were white, and 85% had moderate/severe SLE. Current treatments included hydroxychloroquine (93%), steroids (79%), and belimumab (57%), and 43% were biologic naive. Patients were generally satisfied with their treatment and medical care; however, they were dissatisfied with treatment adverse effects and the number of available treatment options. Cognitive debriefing interviews (n = 8) demonstrated that the LSQ was comprehensive, clear, and relevant; therefore, only minor revisions were made to the questionnaire. The LSQ assesses satisfaction with current SLE treatments (25 items), medical care (11 items), and insurance coverage (3 items). The draft LSQ was evaluated in 195 adults with SLE. Fifty-eight percent of patients reported that they were "somewhat satisfied" with their SLE treatment. CONCLUSIONS: The LSQ has been developed to assess treatment satisfaction among patients with SLE. Following further testing to support its validity and reliability, it will provide a useful tool to facilitate assessment of satisfaction with treatments for SLE and help inform treatment decisions.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , Glucocorticoides/uso terapêutico , Hidroxicloroquina/uso terapêutico , Preferência do Paciente/estatística & dados numéricos , Qualidade de Vida , Inquéritos e Questionários , Adulto , Antirreumáticos/uso terapêutico , Feminino , Humanos , Cobertura do Seguro/estatística & dados numéricos , Lúpus Eritematoso Sistêmico/economia , Lúpus Eritematoso Sistêmico/epidemiologia , Lúpus Eritematoso Sistêmico/psicologia , Lúpus Eritematoso Sistêmico/terapia , Masculino , Administração dos Cuidados ao Paciente/métodos , Administração dos Cuidados ao Paciente/normas , Medidas de Resultados Relatados pelo Paciente , Reprodutibilidade dos Testes , Estados Unidos/epidemiologia
5.
Arthritis Care Res (Hoboken) ; 69(6): 842-848, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-27564570

RESUMO

OBJECTIVE: To examine the external validity of the Lupus Impact Tracker (LIT), a systemic lupus erythematosus (SLE)-specific, health-related quality of life (HRQoL) tool in a population-based cohort of patients with SLE in Atlanta, Georgia. We modeled the association of LIT scores with patient-reported measures of SLE activity (Systemic Lupus Activity Questionnaire [SLAQ]) and organ damage (self-administered Brief Index of Lupus Damage [SA-BILD]). We investigated the association of LIT scores with general HRQoL using the Short Form 12 (SF-12). METHODS: Correlation, multivariable regression, and longitudinal analyses using general linear modeling with fixed effects were performed to investigate the association between the LIT and patient-reported disease activity (SLAQ); patient-reported disease damage (SA-BILD); mental health (mental component summary [MCS] of the SF-12); and physical health (physical component summary [PCS] of the SF-12). Demographic trends related to the LIT were also assessed using cross-sectional analysis. RESULTS: The LIT was significantly associated with disease activity (SLAQ), organ damage (SA-BILD), MCS scores, and PCS scores in both adjusted and unadjusted regression analysis (P < 0.0001). Longitudinal analysis demonstrated a significant association between the LIT and disease activity (SLAQ), MCS scores, and PCS scores (P < 0.0001), but not organ damage (SA-BILD). CONCLUSION: The LIT is a simple, patient-centered tool that can be used to assess HRQoL in patients with SLE. This study provides external validity of the LIT in a population-based cohort with a large number of African American patients with a relatively high disease burden.


Assuntos
Inquéritos Epidemiológicos/normas , Lúpus Eritematoso Sistêmico/diagnóstico , Lúpus Eritematoso Sistêmico/epidemiologia , Qualidade de Vida , Adolescente , Adulto , Estudos de Coortes , Estudos Transversais , Feminino , Georgia/epidemiologia , Humanos , Estudos Longitudinais , Lúpus Eritematoso Sistêmico/psicologia , Masculino , Pessoa de Meia-Idade , Qualidade de Vida/psicologia , Sistema de Registros/normas , Sudeste dos Estados Unidos/epidemiologia , Adulto Jovem
6.
Clin Ther ; 38(3): 610-24, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26907503

RESUMO

PURPOSE: The treatment of systemic lupus erythematosus (SLE) is complex, with a wide range of drugs commonly prescribed. The aims of this study were to identify longitudinal treatment patterns in patients with incident SLE and to estimate the associations of treatment patterns with clinical and economic outcomes. METHODS: This retrospective, observational cohort study used a US managed care claims database to identify patients with newly diagnosed SLE and 4-year treatment follow-up. Patients were aged ≥ 18 years, with continuous medical and pharmacy benefits for 12 months before and 48 months after the index date (first medical claim with a diagnosis of SLE). Longitudinal treatment patterns were grouped using a k-means cluster analysis. Therapies were included in the cluster analysis if the mean number of prescriptions in each year was ≥ 0.05. Clinical and economic outcomes were compared across clusters using multivariate regression analyses. FINDINGS: Data from 1611 patients with incident SLE were analyzed (91.4% women; mean [SD] age, 44.5 [9.5] years; 56.2% managed primarily by a specialist). Hydroxychloroquine and corticosteroids were the most commonly prescribed therapies; methotrexate, azathioprine, and mycophenolate mofetil also met the criteria for inclusion in the cluster analysis. Ten treatment clusters were identified; the most common was minimally treated patients (42.8%). Hydroxychloroquine monotherapy, corticosteroid monotherapy, and corticosteroid/hydroxychloroquine combination therapy were received by 34.0%, 11.2%, and 7.8% of patients, respectively. Methotrexate or azathioprine with a corticosteroid/hydroxychloroquine were received by 4.2% of patients. Changes in therapy, except discontinuations, were rare. Compared with the minimally treated cluster, those that received corticosteroid monotherapy (mean dose, >12.0 mg/d) had poorer clinical and economic outcomes; the hydroxychloroquine-monotherapy cluster had similar or better outcomes; and patients who received a corticosteroid/hydroxychloroquine with or without methotrexate or azathioprine demonstrated outcomes that were poorer but that appeared better than those with corticosteroid monotherapy. SLE-related visits with a nonspecialist were common (~45%) and remained unchanged over time despite better clinical and economic outcomes associated with specialist visits. IMPLICATIONS: This study utilized cluster analysis, an unsupervised machine-learning method, to systematically discern treatment patterns over 4 years and to estimate outcomes associated with the identified treatment patterns. The results suggest that minimal treatment is the most common approach in patients with newly diagnosed SLE. Clinical and economic outcomes are poorest with corticosteroid monotherapy but may improve with the addition of hydroxychloroquine and/or an immunosuppressive agent. A large proportion of SLE care is provided by nonspecialists despite the potential benefits of involving a specialist.


Assuntos
Corticosteroides/administração & dosagem , Hidroxicloroquina/administração & dosagem , Imunossupressores/administração & dosagem , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Adolescente , Corticosteroides/uso terapêutico , Adulto , Bases de Dados Factuais , Feminino , Humanos , Imunossupressores/uso terapêutico , Estudos Longitudinais , Masculino , Programas de Assistência Gerenciada , Metotrexato/uso terapêutico , Pessoa de Meia-Idade , Ácido Micofenólico/análogos & derivados , Ácido Micofenólico/uso terapêutico , Estudos Retrospectivos , Adulto Jovem
7.
Arthritis Care Res (Hoboken) ; 67(12): 1646-55, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26097059

RESUMO

OBJECTIVE: To investigate the epidemiology and treatment of rheumatoid arthritis (RA) in a population broadly representative of employed adults in the US, using a retrospective cohort design. METHODS: Incident and prevalent RA cohorts were defined from a sample of 4.66 million adults with complete followup data from the period of January 2005 through September 2008 in the Pharmetrics medical claims database. Demographics, comorbidity, and medical therapies were summarized using descriptive statistics. RESULTS: Median duration in the database was 5.7 years. Age- and sex-adjusted incidence in 2006 was 0.71 per 1,000 persons at risk (n = 3,992) and prevalence in 2005 was 0.63% (n = 30,530). Within 12 months after diagnosis, 65%, 64%, and 20% of the incident cohort had been prescribed corticosteroids, nonbiologic disease-modifying antirheumatic drugs (DMARDs), and tumor necrosis factor (TNF) inhibitors, respectively. Median time to first anti-TNF prescription was 6 months; 31% switched to a second drug and 15% to a third. An aggressive subcohort (11% of incident patients) received more DMARDs (83%) and TNF inhibitors (43%), and was more likely to switch. Twenty-eight percent of incident patients received only symptomatic therapy over a minimum of 1.75 years of followup; these patients were older with more comorbidities and contraindications to methotrexate. CONCLUSION: In this insured population-based cohort, only two-thirds of newly diagnosed RA patients were prescribed a DMARD in year 1 and 28% received no antirheumatic therapy. Although limited by lack of clinical information and by left-censoring, administrative databases capture clinical practice and suggest that gaps exist in treatment options available to a significant number of patients.


Assuntos
Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Artrite Reumatoide/epidemiologia , Seguro Saúde , Padrões de Prática Médica/tendências , Distribuição por Idade , Idoso , Antirreumáticos/efeitos adversos , Artrite Reumatoide/diagnóstico , Artrite Reumatoide/imunologia , Comorbidade , Bases de Dados Factuais , Substituição de Medicamentos , Quimioterapia Combinada , Feminino , Disparidades em Assistência à Saúde/tendências , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Terapia de Alvo Molecular , Prevalência , Estudos Retrospectivos , Distribuição por Sexo , Fatores de Tempo , Resultado do Tratamento , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Fator de Necrose Tumoral alfa/imunologia , Estados Unidos/epidemiologia
8.
J Rheumatol ; 40(7): 1089-96, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23729801

RESUMO

OBJECTIVE: To investigate the safety and tolerability of a single subcutaneous (SC) dose of ofatumumab, a fully human anti-CD20 monoclonal antibody, in patients with rheumatoid arthritis (RA) taking background methotrexate (MTX). Secondary objectives included characterizing pharmacokinetics and pharmacodynamics. METHODS: In this single-blind, phase I/II study, 35 patients with RA were randomized in 5 cohorts to receive a single subcutaneous (SC) ofatumumab dose ranging from 0.3 to 100 mg, or placebo, following premedication with oral acetaminophen and antihistamine. Patients were followed for 24 weeks with extended followup to monitor B cell and immunoglobulin recovery for up to 2 years if required. RESULTS: Thirty-five patients received the following treatment: 0.3 mg, n = 4; 3 mg, n = 6; 30 mg, n = 8; 60 mg, n = 6; 100 mg, n = 3; placebo, n = 8. The most common adverse events in the combined ofatumumab groups were headache, nausea, and upper respiratory tract infection. Because of tolerability concerns, only 3 patients were given 100 mg. For the 30-100 mg doses, median maximum plasma concentration values ranged from 4.02 to 4.49 days. Mean elimination half-life values ranged from 5.20 to 6.83 days. Increasing peripheral median B cell depletion was observed from 0.3 mg up to 30 mg, and full target B cell depletion was achieved with 30 mg, 60 mg, and 100 mg. CONCLUSION: Treatment of RA patients with SC ofatumumab doses of 30 mg or higher resulted in profound and prolonged B cell depletion in blood. Single doses up to 60 mg were tolerated without glucocorticoid premedication. (ClinicalTrials.gov identifier NCT00686868).


Assuntos
Anticorpos Monoclonais/uso terapêutico , Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Metotrexato/uso terapêutico , Adulto , Idoso , Anticorpos Monoclonais/administração & dosagem , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais/farmacocinética , Anticorpos Monoclonais Humanizados , Antirreumáticos/administração & dosagem , Antirreumáticos/efeitos adversos , Antirreumáticos/farmacocinética , Quimioterapia Combinada , Feminino , Humanos , Hipodermóclise , Masculino , Metotrexato/administração & dosagem , Metotrexato/efeitos adversos , Pessoa de Meia-Idade , Método Simples-Cego , Resultado do Tratamento
10.
Ann Rheum Dis ; 70(12): 2119-25, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21859685

RESUMO

OBJECTIVES: To evaluate the efficacy and safety of intravenous ofatumumab, a fully human anti-CD20 monoclonal antibody, in biological-naive, active rheumatoid arthritis (RA) patients despite methotrexate treatment. METHODS: In this double-blind, placebo-controlled, phase III study, active RA patients on stable methotrexate were randomly assigned to one course of two infusions of ofatumumab 700 mg (n=130) or placebo (n=130), 2 weeks apart. The primary endpoint was the ACR20 response at week 24. Secondary endpoints included ACR50/70, EULAR response, disease activity score based on 28 joints using C-reactive protein, adverse events (AE) and immunogenicity. RESULTS: At week 24, a greater proportion of patients on ofatumumab compared with placebo achieved an ACR20 response (50% vs 27%, p<0.001) and a good or moderate EULAR response (67% vs 41%, p<0.001). All other key secondary efficacy endpoints were significantly improved on ofatumumab. Efficacy observed by 8 weeks was sustained throughout the study. The most common AE for ofatumumab versus placebo were rash (21% vs <1%) and urticaria (12% vs <1%), mostly occurring on the first infusion day. Overall, first-dose infusion reactions were 68% for ofatumumab and 6% for placebo, mostly mild to moderate; second-dose infusion reactions markedly declined (<1% and 0%). Serious AE were reported in 5% of ofatumumab versus 3% of placebo patients. Infection rates were 32% and 26% (serious infections <1% and 2%), respectively. One death (interstitial lung disease), unrelated to study drug, was reported on ofatumumab. No antidrug antibodies were detected in ofatumumab patients. CONCLUSIONS: Ofatumumab significantly improved all clinical outcomes in biological-naive, active RA patients with no detectable immunogenicity at week 24. No unexpected safety findings were identified. Trial Registry clinical trials.gov registration number NCT00611455.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Metotrexato/uso terapêutico , Adulto , Idoso , Anticorpos Monoclonais/administração & dosagem , Anticorpos Monoclonais/efeitos adversos , Anticorpos Monoclonais Humanizados , Antígenos CD20/imunologia , Antirreumáticos/administração & dosagem , Antirreumáticos/efeitos adversos , Biomarcadores/sangue , Proteína C-Reativa/metabolismo , Método Duplo-Cego , Toxidermias/etiologia , Quimioterapia Combinada , Feminino , Humanos , Infusões Intravenosas , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Índice de Gravidade de Doença , Resultado do Tratamento
11.
Clin Exp Rheumatol ; 29(1): 26-34, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21345289

RESUMO

OBJECTIVES: To evaluate prevalence of dose escalation among RA patients in normal clinical practice treated with etanercept, adalimumab or infliximab and to estimate its economic impact. METHODS: A retrospective observational study of 739 patients with RA receiving continuous treatment with etanercept (n=319), adalimumab (n=313) or infliximab (n=107) for 18 months. Dose escalation, intensification of concomitant DMARDs and risk of dose escalation were evaluated, as well as costs. RESULTS: Significantly more patients prescribed adalimumab (10%, p<0.001) or infliximab (35%, p<0.001) experienced dose escalation compared with patients treated with etanercept (3%). DMARD or steroid dose adjustment, when added as criteria of escalation, occurred more often among patients treated with adalimumab (28%; p=0.022) or infliximab (47%; p<0.001) than those prescribed etanercept (19%). Independent of confounding covariates, hazard of dose escalation was significantly higher for either infliximab (28.1-fold) or adalimumab (4.9-fold) relative to etanercept. Escalation among subjects treated with either infliximab or adalimumab incurred statistically significant increases in total cost of care compared with non-escalators whereas such differences observed for subjects treated with etanercept were not significant. CONCLUSIONS: Patients receiving monoclonal antibody therapies, adalimumab or infliximab, had significantly higher rates of dose escalation than patients receiving the soluble TNF receptor, etanercept, and related costs were higher.


Assuntos
Anticorpos Monoclonais/administração & dosagem , Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Imunoglobulina G/administração & dosagem , Receptores do Fator de Necrose Tumoral/administração & dosagem , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Adalimumab , Anticorpos Monoclonais Humanizados , Antirreumáticos/administração & dosagem , Artrite Reumatoide/fisiopatologia , Relação Dose-Resposta a Droga , Esquema de Medicação , Cálculos da Dosagem de Medicamento , Etanercepte , Feminino , Nível de Saúde , Humanos , Infliximab , Masculino , Pessoa de Meia-Idade , Índice de Gravidade de Doença
12.
Steroids ; 76(1-2): 169-76, 2011 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21055412

RESUMO

Sea lamprey, a basal vertebrate, contains a progesterone receptor [PR]. An unusual property of lamprey is that gonadotropin-releasing hormone induces synthesis of 15α-hydroxy-progesterone [15α-OH-P] instead of progesterone. There also is indirect evidence for 7α-OH-P in lamprey serum. To determine if there is a structural basis for the binding of 7α-OH-P and 15α-OH-P to lamprey PR, we constructed 3D models of the lamprey PR complexed with progesterone, 7α-OH-P and 15α-OH-P. These 3D models reveal that Met-277 in lamprey PR has a specific interaction with the 15α-hydroxyl on 15α-OH-P and with Met-192, which also contacts the 15α-hydroxyl group. We also find that 7α-OH-P has favorable contacts with side-chains in lamprey PR. BLAST searches reveal that Met-277 on lamprey PR is unique among vertebrate PRs. This unique site on lamprey PR could be a target for compounds to control reproduction in sea lamprey, an environmental pest in Lake Michigan.


Assuntos
Progesterona/análogos & derivados , Progesterona/química , Receptores de Progesterona/química , Sequência de Aminoácidos , Animais , Humanos , Lampreias , Modelos Moleculares , Dados de Sequência Molecular , Alinhamento de Sequência
13.
Clin Cancer Res ; 15(24): 7676-7683, 2009 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-19996215

RESUMO

PURPOSE: Skeletal metastases affect up to 85% of breast cancer patients by the time of their death. This prospective in vivo study evaluated the diagnostic performance of computed tomography-based structural rigidity analysis (CTRA) to predict vertebral fracture risk in breast cancer patients with skeletal metastasis and in comparison with the current standard of care. EXPERIMENTAL DESIGN: Torso CT scans of 94 women with vertebral metastatic breast cancer were obtained as part of routine screening for lung and liver metastases. The load-bearing capacity (LBC) and axial (EA) and bending (EI) rigidities of vertebrae T8 to L5 were calculated from CT images. The LBC was normalized by patient body mass index (BMI) to account for height and mass variations. Vertebral fracture risk was also calculated using the current radiographic-based criteria based on lesion size and location. The actual occurrence of a new vertebral fracture was assessed radiographically over the ensuing 4 months. RESULTS: Eleven vertebral fractures occurred in 10 patients. The structural parameters EA, EI, LBC, and LBC/BMI were all 100% sensitive and 55%, 53%, 44%, and 70% specific to predict fracture risk, respectively. Although radiographic criteria correctly predicted all fracture cases (100% sensitive), only 48 of the 236 spinal segments that did not have a fracture were correctly predicted not to fracture (20% specific). CONCLUSIONS: CTRA, using CT scans as part of routine screening for lung and liver metastasis, is shown to be as sensitive as, and significantly more specific than, the current radiographic criteria for predicting vertebral fracture in breast cancer patients with skeletal metastasis. (Clin Cancer Res 2009;15(24):7676-83).

14.
PLoS One ; 4(6): e6038, 2009 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-19557178

RESUMO

BACKGROUND: Lamprey, basal vertebrate, is an important model system for understanding early events in vertebrate evolution. Lamprey contains orthologs of the estrogen receptor [ER], progesterone receptor and corticoid receptor. A perplexing property of lamprey is that 15alpha-hydroxy-steroids are active steroids. For example, 15alpha-hydroxy-estradiol [15alpha-OH-E2] is the estrogen, instead of estradiol [E2]. To investigate how 15alpha-OH-E2 binds lamprey ER, we constructed a 3D model of the lamprey ER with E2 and 15alpha-OH-E2. METHODOLOGY: We used the 3D structure of human ERalpha as a template to construct a 3D model of lamprey ER. E2 and 15alpha-OH-E2 were inserted into the 3D model of lamprey ER and 15alpha-OH-E2 was inserted into human ERalpha. Then the each steroid-protein complex was refined using Discover 3 from Insight II software. To determine if lamprey ER had some regions that were unique among vertebrate ERs, we used the ligand-binding domain of lamprey ER as a query for a BLAST search of GenBank. PRINCIPAL FINDINGS: Our 3D model of lamprey ER with 15alpha-OH-E2 shows that Sdelta on Met-409 can form a hydrogen bond with the 15alpha-hydroxyl on 15alpha-OH-E2. In human ERalpha, the corresponding residue Ile-424 has a van der Waals contact with 15alpha-OH-E2. BLAST analysis of GenBank indicates that among vertebrate ERs, only lamprey ER contains a methionine at this position. Thus, the contact between Sdelta on Met-409 and 15alpha-OH-E2 is unique. Interestingly, BLAST finds that five New World monkeys and a sturgeon contain a valine instead of isoleucine. SIGNIFICANCE: In addition to shedding light on the structure of the ER in a basal vertebrate, our 3D model of lamprey ER should prove useful in virtual screening of chemical libraries to identify compounds for controlling reproduction in sea lamprey, an environmental pest in Lake Michigan.


Assuntos
Estradiol/análogos & derivados , Estradiol/química , Receptores de Estrogênio/química , Sequência de Aminoácidos , Animais , Evolução Molecular , Humanos , Lampreias , Modelos Químicos , Conformação Molecular , Dados de Sequência Molecular , Conformação Proteica , Estrutura Terciária de Proteína , Homologia de Sequência de Aminoácidos
15.
Biochem Biophys Res Commun ; 386(3): 516-20, 2009 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-19540191

RESUMO

The origins of signaling by vertebrate steroids are not fully understood. An important advance was the report that an estrogen-binding steroid receptor [SR] is present in amphioxus, a basal chordate with a similar body plan as vertebrates. To investigate the evolution of estrogen-binding to steroid receptors, we constructed a 3D model of amphioxus SR complexed with estradiol. This 3D model indicates that although the SR is activated by estradiol, some interactions between estradiol and human ERalpha are not conserved in the SR, which can explain the low affinity of estradiol for the SR. These differences between the SR and ERalpha in the steroid-binding domain are sufficient to suggest that another steroid is the physiological regulator of the SR. The 3D model predicts that mutation of Glu-346 to Gln will increase the affinity of testosterone for amphioxus SR and elucidate the evolution of steroid-binding to nuclear receptors.


Assuntos
Cordados/metabolismo , Estradiol/química , Modelos Moleculares , Receptores de Esteroides/química , Sequência de Aminoácidos , Animais , Receptor alfa de Estrogênio/química , Evolução Molecular , Humanos , Dados de Sequência Molecular , Conformação Proteica
16.
Lancet ; 372(9636): 375-82, 2008 Aug 02.
Artigo em Inglês | MEDLINE | ID: mdl-18635256

RESUMO

BACKGROUND: Remission and radiographic non-progression are goals in the treatment of early rheumatoid arthritis. The aim of the combination of methotrexate and etanercept in active early rheumatoid arthritis (COMET) trial is to compare remission and radiographic non-progression in patients treated with methotrexate monotherapy or with methotrexate plus etanercept. METHODS: 542 outpatients who were methotrexate-naive and had had early moderate-to-severe rheumatoid arthritis for 3-24 months were randomly assigned to receive either methotrexate alone titrated up from 7.5 mg a week to a maximum of 20 mg a week by week 8 or methotrexate (same titration) plus etanercept 50 mg a week. Coprimary endpoints at 52 weeks were remission measured with the disease activity score in 28 joints (DAS28) and radiographic non-progression measured with modified total Sharp score. Treatment was allocated with a computerised randomisation and enrolment system, which masked both participants and carers. Analysis was done by modified intention to treat with last observation carried forward for missing data. This study is registered with ClinicalTrials.gov, number NCT00195494). FINDINGS: 274 participants were randomly assigned to receive combined treatment and 268 methotrexate alone. 132 of 265 (50%, 95% CI 44-56%) patients who took combined treatment and were available for assessment achieved clinical remission compared with 73 of 263 (28%, 23-33%) taking methotrexate alone (effect difference 22.05%, 95%CI 13.96-30.15%, p<0.0001). 487 evaluable patients had severe disease (DAS28>5.1). 196 of 246 (80%, 75-85%) and 135 of 230 (59%, 53-65%), respectively, achieved radiographic non-progression (20.98%, 12.97-29.09%, p<0.0001). Serious adverse events were similar between groups. INTERPRETATION: Both clinical remission and radiographic non-progression are achievable goals in patients with early severe rheumatoid arthritis within 1 year of combined treatment with etanercept plus methotrexate. FUNDING: Wyeth Research.


Assuntos
Antirreumáticos/uso terapêutico , Artrite Reumatoide/tratamento farmacológico , Imunoglobulina G/uso terapêutico , Metotrexato/uso terapêutico , Receptores do Fator de Necrose Tumoral/uso terapêutico , Antirreumáticos/administração & dosagem , Antirreumáticos/efeitos adversos , Artrite Reumatoide/classificação , Artrite Reumatoide/diagnóstico por imagem , Método Duplo-Cego , Quimioterapia Combinada , Etanercepte , Feminino , Humanos , Imunoglobulina G/administração & dosagem , Imunoglobulina G/efeitos adversos , Masculino , Metotrexato/administração & dosagem , Metotrexato/efeitos adversos , Pessoa de Meia-Idade , Radiografia , Receptores do Fator de Necrose Tumoral/administração & dosagem , Índice de Gravidade de Doença , Resultado do Tratamento
18.
Artigo em Inglês | MEDLINE | ID: mdl-16182156

RESUMO

OBJECTIVE: To determine analgesic efficacy of a single oral dose of rofecoxib 50 mg compared with acetaminophen/codeine 600/60 mg, we conducted a double-blind, randomized, placebo- and active-comparator-controlled, parallel-group study. STUDY DESIGN: Patients (N = 390) experiencing moderate or severe pain postextraction of 2 or more third molars, with at least 1 mandibular impaction, were randomized to placebo (n = 30), rofecoxib (n = 180), or codeine/acetaminophen 60/600 mg (n = 180). Time to confirmed perceptible pain relief, and patient evaluations of pain intensity, pain relief, and global assessments were recorded. RESULTS: For total pain relief over 6 hours (primary end point), rofecoxib was superior to codeine/acetaminophen (15.5 vs 10.7; P < .001). Rofecoxib was statistically significantly superior to codeine/acetaminophen with respect to TOPAR4, patient global assessment, peak pain relief, and duration of analgesic effect. Median onset of analgesia was similar for both drugs. The codeine/acetaminophen group had more patients with 1 or more adverse events. CONCLUSION: Rofecoxib provided superior analgesic efficacy compared with codeine/acetaminophen with fewer gastrointestinal and nervous system adverse events.


Assuntos
Analgésicos Opioides/uso terapêutico , Codeína/uso terapêutico , Inibidores de Ciclo-Oxigenase 2/uso terapêutico , Dor Facial/tratamento farmacológico , Lactonas/uso terapêutico , Dor Pós-Operatória/tratamento farmacológico , Sulfonas/uso terapêutico , Acetaminofen/uso terapêutico , Doença Aguda , Adolescente , Adulto , Analgésicos não Narcóticos/uso terapêutico , Análise de Variância , Qualidade de Produtos para o Consumidor , Método Duplo-Cego , Combinação de Medicamentos , Dor Facial/etiologia , Feminino , Humanos , Modelos Logísticos , Masculino , Dente Serotino/cirurgia , Dor Pós-Operatória/etiologia , Extração Dentária/efeitos adversos
19.
Clin J Pain ; 21(3): 241-50, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-15818076

RESUMO

OBJECTIVE: To determine the time to onset of analgesia of rofecoxib based on a patient-level meta-analysis of randomized, placebo-controlled, postoperative oral surgery pain studies. METHODS: A search on MEDLINE and of Merck data on file was conducted to identify studies that met the inclusion criteria. Meta-analysis inclusion criteria required that patients were treated with a single oral dose of rofecoxib 50 mg when they experienced moderate or severe pain after surgical extraction of > or = 2 third molars; study design involved patient randomization, double-blinding, and matching placebo, and onset data from individual patients were available. The meta-analysis of time to onset also required that studies used the two-stopwatch method. Eleven studies fulfilled the onset criteria and included patients who received a single dose of rofecoxib 50 mg (N = 1220) or placebo (N = 483). These studies were analyzed to determine time to onset of analgesia, time to perceptible pain relief, percentage of patients achieving onset of analgesia, and duration of analgesia. Six of the 11 studies included a nonselective nonsteroidal anti-inflammatory drug (N = 303) and were included in the onset meta-analysis for comparison. The meta-analysis of overall efficacy also required that data on total pain relief scores over 8 hours were available. Over-all effectiveness of analgesia was based on analysis of 13 studies involving 1330 rofecoxib patients and 570 placebo patients on the endpoints of total pain relief scores over 8 hours and patient global assessment of response to therapy at 24 hours. Eight of the 13 studies with a nonselective nonsteroidal anti-inflammatory drug comparator (N = 391) were included for the efficacy meta-analysis. RESULTS: Patient demographics and baseline characteristics were similar across treatment groups in each study. Median time to onset of analgesia for rofecoxib was 34 minutes (95% CI, 31-38 minutes), significantly faster than placebo, which did not achieve onset within the 4 hours the assessment was conducted (P < 0.001). Duration of analgesia for rofecoxib 50 mg was > 24 hours. Rofecoxib achieved a greater mean total pain relief score over 8 hours than placebo (17.4 versus 4.4; P < 0.001) and a greater patient response rate on patient global assessment of response to therapy at 24 hours than placebo (73% versus 16%; P < 0.001). Outcomes were similar between the rofecoxib group and the nonselective nonsteroidal anti-inflammatory drug group. CONCLUSION: In this meta-analysis of over 1200 rofecoxib-treated patients, a single dose of rofecoxib 50 mg demonstrated a rapid onset of analgesia in approximately half an hour combined with sustained effectiveness, supporting its use as a treatment of acute pain.


Assuntos
Anti-Inflamatórios não Esteroides/uso terapêutico , Lactonas/uso terapêutico , Dor/tratamento farmacológico , Tempo de Reação/efeitos dos fármacos , Sulfonas/uso terapêutico , Adolescente , Adulto , Estudos de Casos e Controles , Demografia , Feminino , Humanos , MEDLINE/estatística & dados numéricos , Masculino , Razão de Chances , Dor/classificação , Medição da Dor/métodos , Fatores de Tempo , Resultado do Tratamento
20.
Curr Med Res Opin ; 20(10): 1523-37, 2004 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-15462686

RESUMO

OBJECTIVE: The relative efficacy of rofecoxib, diclofenac sodium, and placebo were compared in the treatment of acute pain after bunionectomy surgery. RESEARCH DESIGN AND METHODS: This was a double-blind, randomized, two-part study of 252 patients with moderate-to-severe pain the day after first metatarsal bunionectomy. Patients were treated with a single dose of rofecoxib 50 mg (N = 85), enteric-coated diclofenac sodium 100 mg (N = 85), or placebo (N = 82) on study Day 1 (Part I), and subsequently with daily rofecoxib 50 mg or placebo (diclofenac patients switched to placebo) over study Days 2-5 (Part II). Patients rated their pain at 16 time points over the first 24 h. Primary endpoint was total pain relief over 8 h (TOPAR8). Pre-specified secondary endpoints on Day 1 included onset of analgesia, peak pain relief, and duration of response. For Part II, supplemental analgesia use with rofecoxib compared to placebo was pre-specified for analysis over Days 2-5, with the focus on Days 2-3. Adverse experiences were recorded over Days 1-5. RESULTS: For TOPAR8 scores, rofecoxib 50 mg was significantly more effective than placebo (9.5 vs. 3.7, p < 0.001) and diclofenac (9.5 vs. 5.0, p < 0.001). Onset of analgesia was more rapid with rofecoxib than placebo (p = 0.003) and diclofenac (p = 0.019); proportion of patients achieving onset within 4 h with rofecoxib, diclofenac, and placebo was 46%, 27%, and 23%, respectively. Peak pain relief was greater with rofecoxib (1.8) than diclofenac (1.2, p = 0.004) and placebo (1.0, p < 0.001). Diclofenac and placebo patients required supplemental analgesia sooner than rofecoxib patients (2:03 h vs. 4:02 h, p < 0.001 and 1:41 h vs. 4:02 h, p < 0.001). Rofecoxib patients used significantly less (p < 0.001) supplemental analgesia than placebo patients over Days 2-3 (1.1 tablets/day vs. 2.1 tablets/day) and Days 2-5 (0.9 tablets/day vs. 1.8 tablets/day). No significant differences in adverse experiences between treatments were seen. CONCLUSION: Rofecoxib 50 mg was significantly more effective than placebo on all measures of treatment of post-bunionectomy pain. Rofecoxib 50 mg was significantly more effective than diclofenac sodium 100 mg based on Day 1 endpoints of total pain relief, onset time, and duration of response. All study medications were generally well tolerated.


Assuntos
Anti-Inflamatórios não Esteroides/uso terapêutico , Diclofenaco/uso terapêutico , Hallux Valgus/cirurgia , Lactonas/uso terapêutico , Procedimentos Ortopédicos/efeitos adversos , Dor Pós-Operatória/tratamento farmacológico , Sulfonas/uso terapêutico , Administração Oral , Adulto , Método Duplo-Cego , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Medição da Dor , Placebos
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