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1.
Ophthalmology ; 130(9): 914-923, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37318415

RESUMEN

PURPOSE: To evaluate the effectiveness of 3 different intravitreal treatments for persistent or recurrent uveitic macular edema (ME): dexamethasone implant, methotrexate, and ranibizumab. DESIGN: Single-masked, randomized controlled clinical trial. PARTICIPANTS: Patients with minimally active or inactive uveitis and persistent or recurrent uveitic ME in one or both eyes. METHODS: Patients at 33 centers were randomized 1:1:1 to receive 1 of the 3 therapies. Patients with bilateral ME received the same treatment in both eyes. MAIN OUTCOME MEASURES: The primary outcome, measured at 12 weeks, was reduction in central subfield thickness (CST) expressed as a proportion of baseline (CST per CST at baseline) assessed with spectral-domain OCT by readers masked to treatment assignment. Secondary outcomes included improvement and resolution of ME, change in best-corrected visual acuity (BCVA), and elevations in intraocular pressure (IOP). RESULTS: One hundred ninety-four participants (225 eligible eyes) were randomized to dexamethasone (n = 65 participants and 77 eyes), methotrexate (n = 65 participants and 79 eyes), or ranibizumab (n = 64 participants and 69 eyes). All received at least 1 injection of the assigned treatment. At the 12-week primary outcome point, each group showed significant reductions in CST relative to baseline: 35%, 11%, and 22% for dexamethasone, methotrexate, and ranibizumab, respectively. Reduction of ME was significantly greater in the dexamethasone group than for either methotrexate (P < 0.01) or ranibizumab (P = 0.018). Only the dexamethasone group showed a statistically significant improvement in BCVA during follow-up (4.86 letters; P < 0.001). Elevations of IOP by 10 mmHg, to 24 mmHg or more, or both were more common in the dexamethasone group; IOP spikes to 30 mmHg or more were uncommon overall and were not significantly different among groups. Reductions in BCVA of 15 letters or more were more common in the methotrexate group and typically were attributable to persistent ME. CONCLUSIONS: At 12 weeks, in eyes with minimally active or inactive uveitis, dexamethasone was significantly better at treating persistent or recurrent ME than methotrexate or ranibizumab. Risk of IOP elevation was greater with dexamethasone, but elevations to levels of 30 mmHg or more were infrequent. FINANCIAL DISCLOSURE(S): Proprietary or commercial disclosure may be found in the Footnotes and Disclosures at the end of this article.


Asunto(s)
Mácula Lútea , Edema Macular , Uveítis , Humanos , Ranibizumab/uso terapéutico , Edema Macular/diagnóstico , Edema Macular/tratamiento farmacológico , Edema Macular/etiología , Glucocorticoides/uso terapéutico , Metotrexato/uso terapéutico , Dexametasona , Resultado del Tratamiento , Uveítis/tratamiento farmacológico , Inyecciones Intravítreas , Inhibidores de la Angiogénesis/uso terapéutico
2.
Ophthalmology ; 128(5): 719-728, 2021 05.
Artículo en Inglés | MEDLINE | ID: mdl-32918964

RESUMEN

PURPOSE: To evaluate the long-term outcomes of uveitic macular edema (ME). DESIGN: Longitudinal follow-up of a cohort of participants in a randomized clinical trial. PARTICIPANTS: A total of 248 eyes of 177 participants with uveitic ME enrolled in the Multicenter Uveitis Steroid Treatment (MUST) Trial and Follow-up Study. METHODS: OCT measurements, taken at baseline and annually, were graded by reading center graders masked to clinical data. Macular edema was defined as a center macular thickness (CMT) ≥240 µm on time-domain OCT or time-domain OCT equivalent. Resolution of ME was defined as normalization of macular thickness on OCT. Relapse of ME was defined as increase in macular thickness to ≥240 µm in an eye that previously had resolution. Visual acuity was measured at each visit with logarithmic visual acuity charts. MAIN OUTCOME MEASURES: Resolution and relapse of ME. Visual acuity. RESULTS: Among 227 eyes with ME followed ≥1 year, the cumulative percent of eyes with ME resolving at any point during 7 years was 94% (95% confidence interval [CI], 89-97). Epiretinal membranes on OCT were associated with a lower likelihood of ME resolution (hazard ratio [HR], 0.74; 95% CI, 0.55-1.01; P = 0.05). Among 177 eyes with resolved ME, the cumulative percent with relapse within 7 years was 43% (95% CI, 32-51). Eyes in which ME resolved gained a mean of 6.24 letters (95% CI, 4.40-8.09; P < 0.001) compared with eyes that remained free from ME during the 1-year follow-up intervals, whereas eyes in which ME did not resolve experienced no gain in vision (mean change -1.30 letters; 95% CI, -2.70 to 0.09; P = 0.065), and eyes that developed ME during the year (incident or relapsed) experienced a mean loss of -8.65 letters (95% CI, -11.5 to -5.84, P < 0.001). CONCLUSIONS: Given sufficient time and treatment, nearly all uveitic ME resolves, but episodes of relapse were common. Visual acuity results were better among eyes with resolved ME, suggesting that control of inflammation and resolution of ME might be visually relevant treatment targets.


Asunto(s)
Implantes de Medicamentos , Fluocinolona Acetonida/administración & dosificación , Glucocorticoides/administración & dosificación , Edema Macular/tratamiento farmacológico , Uveítis/tratamiento farmacológico , Administración Oral , Adulto , Membrana Epirretinal/fisiopatología , Femenino , Estudios de Seguimiento , Humanos , Edema Macular/diagnóstico por imagen , Edema Macular/fisiopatología , Masculino , Persona de Mediana Edad , Factores de Tiempo , Tomografía de Coherencia Óptica , Resultado del Tratamiento , Uveítis/diagnóstico por imagen , Uveítis/fisiopatología , Agudeza Visual/fisiología
3.
Ophthalmology ; 127(12): 1710-1718, 2020 12.
Artículo en Inglés | MEDLINE | ID: mdl-32717341

RESUMEN

PURPOSE: To evaluate the responsiveness of quality of life (QoL) metrics to ocular and systemic events in patients with noninfectious uveitis. DESIGN: Cohort study using randomized controlled trial data. PARTICIPANTS: Patients with active or recently active intermediate, posterior, or panuveitis enrolled in the Multicenter Uveitis Steroid Treatment (MUST) Trial and Follow-up Study. METHODS: Data on the 25-item National Eye Institute Visual Functioning Questionnaire (NEI-VFQ-25), EuroQol Questionnaire (EQ-5D), and Short Form Survey Instrument (SF-36) were evaluated semiannually during the first 3 years after randomization. The impact of ocular (e.g., changes in visual acuity [VA], activity status, cataract surgery) and systemic events (e.g., infections requiring treatment) on the 6-month changes in QoL was assessed for each metric using generalized estimating equations. MAIN OUTCOME MEASURES: The primary outcomes were the 6-month changes in vision-related (NEI-VFQ-25) and general health-related (EQ-5D index, SF-36 physical component summary [PCS]) QoL. RESULTS: Changes in VA (adjusted change [aΔ]: 2.70 units per 5 letter change, P < 0.001), implant placement in at least 1 eye (aΔ: 5.50, P < 0.001), cataract surgery (aΔ: 3.01, P = 0.017), and quieting of all eyes active at the beginning of the interval (aΔ: 2.20, P < 0.010) were associated with improvements in the NEI-VFQ-25. Reductions in VA (aΔ: -0.014 per 5 letter decline, P = 0.003), infections requiring a prescription (aΔ: -0.024, P = 0.021), and incident uveitis activity in at least 1 eye (aΔ: -0.023, P = 0.031) were associated with declines in the EQ-5D index. Hospitalization (aΔ: -2.24, P = 0.019), infections requiring a prescription (aΔ: -1.00, P = 0.024), and vitreous hemorrhage in at least 1 eye (aΔ: -1.92, P = 0.021) were associated with declines in the SF-36 PCS. Declines in VA, initiation in IOP medication, and age were associated with changes in SF-36 PCS; however, the magnitude of the change was less than a single point. CONCLUSIONS: The NEI-VFQ-25 was more sensitive to ocular changes than the general QoL metrics but less sensitive to acute systemic events. When performing QoL or cost-effectiveness analyses, it is important to consider the expected outcomes (e.g., ocular vs. systemic) to ensure that the selected measurement is sensitive enough to detect clinically important changes in disease status or effects of treatment.


Asunto(s)
Calidad de Vida/psicología , Uveítis/psicología , Visión Ocular/fisiología , Adulto , Anciano , Benchmarking , Extracción de Catarata , Estudios de Cohortes , Femenino , Estudios de Seguimiento , Glucocorticoides/uso terapéutico , Estado de Salud , Encuestas Epidemiológicas , Humanos , Masculino , Persona de Mediana Edad , Indicadores de Calidad de la Atención de Salud , Ensayos Clínicos Controlados Aleatorios como Asunto , Perfil de Impacto de Enfermedad , Encuestas y Cuestionarios , Estados Unidos , Uveítis/tratamiento farmacológico , Uveítis/fisiopatología , Agudeza Visual/fisiología
4.
Ophthalmology ; 126(2): 283-295, 2019 02.
Artículo en Inglés | MEDLINE | ID: mdl-30269924

RESUMEN

PURPOSE: To evaluate the comparative effectiveness of 3 regional corticosteroid injections for uveitic macular edema (ME): periocular triamcinolone acetonide (PTA), intravitreal triamcinolone acetonide (ITA), and the intravitreal dexamethasone implant (IDI). DESIGN: Multicenter, randomized clinical trial. PARTICIPANTS: Patients with uveitic ME. METHODS: Patients were randomized 1:1:1 to receive 1 of the 3 therapies. Patients with bilateral ME were assigned the same treatment for both eyes. MAIN OUTCOME MEASURES: The primary outcome was the proportion of baseline (PropBL) central subfield thickness (CST) at 8 weeks (CST at 8 weeks/CST at baseline) assessed with OCT by masked readers. Secondary outcomes included ≥20% improvement and resolution of ME, best-corrected visual acuity (BCVA), and intraocular pressure (IOP) events over 24 weeks. RESULTS: All treatment groups demonstrated improved CST during follow-up. At 8 weeks, each group had clinically meaningful reductions in CST relative to baseline (PropBL: 0.77, 0.61, and 0.54, respectively, which translates to reductions of 23%, 39%, and 46% for PTA, ITA, and IDI, respectively). Intravitreal triamcinolone acetonide (PropBL ITA/PropBL PTA, hazard ratio [HR], 0.79; 99.87% confidence interval [CI], 0.65-0.96) and IDI (PropBL IDI/PropBL PTA, HR, 0.69; 99.87% CI, 0.56-0.86) had larger reductions in CST than PTA (P < 0.0001). Intravitreal dexamethasone implant was noninferior to ITA at 8 weeks (PropBL IDI/PropBL ITA, HR, 0.88; 99.87% CI, 0.71-1.08). Both ITA and IDI treatments also were superior to PTA treatment in improving and resolving uveitic ME. All treatment groups demonstrated BCVA improvement throughout follow-up. Both ITA and IDI groups had improvements in BCVA that was 5 letters greater than in the PTA group at 8 weeks (P < 0.004). The risk of having IOP ≥24 mmHg was higher in the intravitreal treatment groups compared with the periocular group (HR, 1.83; 95% CI, 0.91-3.65 and HR, 2.52; 95% CI, 1.29-4.91 for ITA and IDI, respectively); however, there was no significant difference between the 2 intravitreal treatment groups. CONCLUSIONS: Intravitreal triamcinolone acetonide and the IDI were superior to PTA for treating uveitic ME with modest increases in the risk of IOP elevation. This risk did not differ significantly between intravitreal treatments.


Asunto(s)
Dexametasona/administración & dosificación , Edema Macular/tratamiento farmacológico , Triamcinolona Acetonida/administración & dosificación , Uveítis/complicaciones , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Vías de Administración de Medicamentos , Implantes de Medicamentos , Femenino , Estudios de Seguimiento , Glucocorticoides/administración & dosificación , Humanos , Inyecciones Intravítreas , Edema Macular/diagnóstico , Edema Macular/etiología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Tomografía de Coherencia Óptica , Resultado del Tratamiento , Uveítis/diagnóstico , Uveítis/tratamiento farmacológico , Adulto Joven
5.
Respir Res ; 20(1): 190, 2019 Aug 20.
Artículo en Inglés | MEDLINE | ID: mdl-31429757

RESUMEN

BACKGROUND: Patients with chronic obstructive pulmonary disease (COPD) have high oxidative stress associated with the severity of the disease. Nuclear factor erythroid-2 related factor 2 (Nrf2)-directed stress response plays a critical role in the protection of lung cells to oxidative stress by upregulating antioxidant genes in response to tobacco smoke. There is a critical gap in our knowledge about Nrf-2 regulated genes in active smokers and former-smokers with COPD in different cell types from of lungs and surrogate peripheral tissues. METHODS: We compared the expression of Nrf2 and six of its target genes in alveolar macrophages, nasal, and bronchial epithelium and peripheral blood mononuclear cells (PBMCs) in current and former smokers with COPD. We compared cell-type specific of Nrf2 and its target genes as well as markers of oxidative and inflammatory stress. RESULTS: We enrolled 89 patients; expression all Nrf2 target gene measured were significantly higher in the bronchial epithelium from smokers compared to non-smokers. None were elevated in alveolar macrophages and only one was elevated in each of the other compartments. CONCLUSION: Bronchial epithelium is the most responsive tissue for transcriptional activation of Nrf2 target genes in active smokers compared to former-smokers with COPD that correlated with oxidative stress and inflammatory markers. There were no consistent trends in gene expression in other cell types tested. TRIAL REGISTRATION: Clinicaltrials.gov : NCT01335971.


Asunto(s)
Antioxidantes/metabolismo , Expresión Génica , Inflamación/genética , Inflamación/metabolismo , Enfermedad Pulmonar Obstructiva Crónica/genética , Enfermedad Pulmonar Obstructiva Crónica/metabolismo , Fumar/genética , Fumar/metabolismo , Anciano , Bronquios/metabolismo , Método Doble Ciego , Epitelio/metabolismo , Femenino , Humanos , Isotiocianatos/uso terapéutico , Macrófagos/metabolismo , Masculino , Persona de Mediana Edad , Monocitos/metabolismo , Factor 2 Relacionado con NF-E2/biosíntesis , Factor 2 Relacionado con NF-E2/genética , Estrés Oxidativo/genética , Cese del Hábito de Fumar , Sulfóxidos , Activación Transcripcional
6.
Ophthalmology ; 121(10): 1855-62, 2014 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-24908205

RESUMEN

OBJECTIVE: To evaluate the 3-year incremental cost-effectiveness of fluocinolone acetonide implant versus systemic therapy for the treatment of noninfectious intermediate, posterior, and panuveitis. DESIGN: Randomized, controlled, clinical trial. PARTICIPANTS: Patients with active or recently active intermediate, posterior, or panuveitis enrolled in the Multicenter Uveitis Steroid Treatment Trial. METHODS: Data on cost and health utility during 3 years after randomization were evaluated at 6-month intervals. Analyses were stratified by disease laterality at randomization (31 unilateral vs 224 bilateral) because of the large upfront cost of the implant. MAIN OUTCOME MEASURES: The primary outcome was the incremental cost-effectiveness ratio (ICER) over 3 years: the ratio of the difference in cost (in United States dollars) to the difference in quality-adjusted life-years (QALYs). Costs of medications, surgeries, hospitalizations, and regular procedures (e.g., laboratory monitoring for systemic therapy) were included. We computed QALYs as a weighted average of EQ-5D scores over 3 years of follow-up. RESULTS: The ICER at 3 years was $297,800/QALY for bilateral disease, driven by the high cost of implant therapy (difference implant - systemic [Δ]: $16,900; P < 0.001) and the modest gains in QALYs (Δ = 0.057; P = 0.22). The probability of the ICER being cost-effective at thresholds of $50,000/QALY and $100,000/QALY was 0.003 and 0.04, respectively. The ICER for unilateral disease was more favorable, namely, $41,200/QALY at 3 years, because of a smaller difference in cost between the 2 therapies (Δ = $5300; P = 0.44) and a larger benefit in QALYs with the implant (Δ = 0.130; P = 0.12). The probability of the ICER being cost-effective at thresholds of $50,000/QALY and $100,000/QALY was 0.53 and 0.74, respectively. CONCLUSIONS: Fluocinolone acetonide implant therapy was reasonably cost-effective compared with systemic therapy for individuals with unilateral intermediate, posterior, or panuveitis but not for those with bilateral disease. These results do not apply to the use of implant therapy when systemic therapy has failed or is contraindicated. Should the duration of implant effect prove to be substantially >3 years or should large changes in therapy pricing occur, the cost-effectiveness of implant versus systemic therapy would need to be reevaluated.


Asunto(s)
Antiinflamatorios/administración & dosificación , Fluocinolona Acetonida/administración & dosificación , Panuveítis/tratamiento farmacológico , Uveítis Intermedia/tratamiento farmacológico , Uveítis Posterior/tratamiento farmacológico , Adulto , Antiinflamatorios/economía , Análisis Costo-Beneficio , Implantes de Medicamentos , Fluocinolona Acetonida/economía , Costos de la Atención en Salud/estadística & datos numéricos , Humanos , Años de Vida Ajustados por Calidad de Vida , Estados Unidos
7.
Ophthalmology ; 120(8): 1571-9, 2013 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-23601801

RESUMEN

OBJECTIVE: To report the 2-year incidence of raised intraocular pressure (IOP) and glaucomatous optic nerve damage in patients with uveitis randomized to either fluocinolone acetonide (FA) implants or systemic therapy. Secondarily, we sought to explore patient and eye characteristics associated with IOP elevation or nerve damage. DESIGN: A randomized, partially masked trial in which patients were randomized to either FA implants or systemic therapy. PARTICIPANTS: Patients aged ≥ 13 years with noninfectious intermediate, posterior, or panuveitis active within the prior 60 days for which systemic corticosteroids were indicated were eligible. METHODS: Visual fields were obtained at baseline and every 12 months using the Humphrey 24-2 Swedish interactive threshold algorithm (SITA) fast protocol. Stereoscopic optic nerve photos were taken at baseline and at 3-, 6-, 12-, and 24-month follow-up visits. Masked examiners measured IOP at every study visit. MAIN OUTCOME MEASURES: Glaucoma was diagnosed based on an increase in optic nerve cup-to-disc ratio with visual field worsening or increased cup-to-disc ratio alone, for cases where visual field change was not evaluable, because of missing data or severe visual field loss at baseline. RESULTS: Most patients were treated as assigned; among those evaluated for glaucoma, 97% and 10% of patients assigned to implant and systemic treatment, respectively, received implants. More patients (65%) assigned to implants experienced an IOP elevation of ≥ 10 mmHg versus 24% assigned to systemic treatment (P<0.001). Similarly, 69% of patients assigned to the implant required IOP-lowering therapy versus 26% in the systemic group (P<0.001). Glaucomatous optic nerve damage developed in 23% versus 6% (P<0.001) of implant and systemic patients, respectively. In addition to treatment assignment, black race, use of IOP-lowering medications, and uveitis activity at baseline were associated with incident glaucoma (P<0.05). CONCLUSIONS: Implant-assigned eyes had about a 4-fold risk of developing IOP elevation of ≥ 10 mmHg and incident glaucomatous optic neuropathy over the first 2 years compared with those assigned to systemic therapy. Central visual acuity was unaffected. Aggressive IOP monitoring with early treatment (often including early filtration surgery) is needed to avoid glaucoma when vision-threatening inflammation requires implant therapy. FINANCIAL DISCLOSURE(S): Proprietary or commercial disclosure may be found after the references.


Asunto(s)
Fluocinolona Acetonida/efectos adversos , Glaucoma/inducido químicamente , Glucocorticoides/efectos adversos , Presión Intraocular/efectos de los fármacos , Enfermedades del Nervio Óptico/inducido químicamente , Uveítis/tratamiento farmacológico , Método Doble Ciego , Implantes de Medicamentos , Femenino , Fluocinolona Acetonida/administración & dosificación , Glaucoma/fisiopatología , Glaucoma/cirugía , Glucocorticoides/administración & dosificación , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Enfermedades del Nervio Óptico/fisiopatología , Enfermedades del Nervio Óptico/cirugía , Factores de Riesgo , Encuestas y Cuestionarios , Tonometría Ocular , Uveítis/fisiopatología , Agudeza Visual , Campos Visuales/fisiología
8.
Am J Ophthalmol ; 254: 210-220, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37406846

RESUMEN

PURPOSE: To evaluate the rate of, risk factors for, and outcomes of cataract surgery in patients with intermediate, posterior, and panuveitides treated with systemic corticosteroids and immunosuppression. DESIGN: Cohort study of participants from a randomized clinical trial. METHODS: A multicenter clinical trial with extended follow-up comprised the study setting. From the cohort of participants assigned to systemic therapy in the Multicenter Uveitis Steroid Treatment (MUST) Trial and Follow-up Study, 125 phakic eyes of 74 patients with intermediate, posterior, or panuveitides treated with systemic therapy were included. The main outcome measures were cataract surgery and visual acuity after cataract surgery. RESULTS: The cumulative incidence of cataract surgery was 43% at 7 years of follow-up, and the risk did not plateau. Risk factors for cataract surgery included age >50 years (hazard ratio [HR] 2.86, 95% CI 1.52, 5.42; P = .001), topical corticosteroid use (time-updated HR 3.13, 95% CI 1.42, 6.94; P = .005), glaucoma medication use (HR 2.75, 95% CI 1.38, 5.47; P = .004), and possibly history of anterior chamber inflammation (HR 1.90, 95% CI 0.95, 3.84; P = .07). Median gain in acuity and median best corrected visual acuity 1 year after cataract surgery were 4.8 lines and 20/25, respectively, among 42 eyes undergoing cataract surgery with 1-year follow-up data. CONCLUSIONS: Among patients with intermediate, posterior, and panuveitides, treated with oral corticosteroids and immunosuppression, there is a substantial long-term risk of cataract surgery. Visual acuity outcomes after cataract surgery are generally good.


Asunto(s)
Catarata , Panuveítis , Uveítis , Humanos , Persona de Mediana Edad , Estudios de Seguimiento , Estudios de Cohortes , Uveítis/complicaciones , Uveítis/tratamiento farmacológico , Panuveítis/complicaciones , Catarata/complicaciones , Factores de Riesgo , Esteroides/uso terapéutico
9.
J Allergy Clin Immunol Pract ; 10(6): 1577-1586.e3, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35304842

RESUMEN

BACKGROUND: Weight loss might improve asthma control in people with obesity. However, people with asthma might have particular challenges losing weight and the amount of weight loss needed to improve asthma control is not clear. OBJECTIVES: To pilot-test an online weight loss intervention and to estimate the impact of weight loss on asthma control. METHODS: We performed a 6-month, single-arm, futility trial of an online weight loss intervention at 2 centers. To reject the assumption of futility, 9 or more participants had to lose at least 5% of their body weight. We also assessed the association between weight loss (≥5%) and asthma outcomes. RESULTS: Forty-three participants (85% women) started the weight loss intervention. The median and interquartile range for the body mass index was 40.3 kg/m2 (range 34.7-46.8 kg/m2), and 14 (range 12-17 kg/m2) for the Asthma Control Test score. At 6 months, 10 participants (23%; 95% CI 12%-39%) lost at least 5% of their initial weight. Weight loss of at least 5% was associated with a clinically and statistically significant improvements in their Asthma Control Test (median [interquartile range] increase of 3 [1 to 7]; P < .05), Marks Asthma Quality of Life Score (-9.5 [-18 to -3]; P = .008), and their general health-related quality of life score (RAND-36; improved by 9.4 [2.8 to 22.5]; P =.014). CONCLUSIONS: An online weight loss intervention has the potential to meet U.S. Food and Drug Administration guidance for product evaluation (at least a 5% weight loss in 35% of people) for treating obesity, and is associated with a clinically significant improvement in asthma control, quality of life, and overall health-related quality of life.


Asunto(s)
Asma , Obesidad , Asma/complicaciones , Índice de Masa Corporal , Femenino , Humanos , Intervención basada en la Internet , Masculino , Obesidad/terapia , Calidad de Vida , Pérdida de Peso , Programas de Reducción de Peso
10.
Public Health Rep ; 126(4): 533-9, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-21800747

RESUMEN

OBJECTIVES: The public has long been encouraged to engage in sun-safe practices to minimize exposure to sunlight, the major cause of nonmelanoma skin cancer. More recently, some have advocated unprotected sun exposure to increase cutaneous synthesis of vitamin D as a way to promote health. We assessed the net result of these conflicting messages. METHODS: In a cross-sectional survey in 2007, questionnaires were mailed to participants of an ongoing cohort study in Washington County, Maryland. The study population consisted of 8,027 adults (55% response rate). RESULTS: Thirty percent of respondents were aware that unprotected sun exposure increased endogenous vitamin D levels. Among those who were aware of this benefit, 42% reported going out into the sun to increase vitamin D levels. Sun-seeking to increase vitamin D production did not significantly differ according to self-reported personal history of skin cancer, but was significantly higher among women, older age groups, those with less education, and vitamin D supplement users. CONCLUSION: A substantial proportion of respondents reported sun-seeking behavior expressly to increase endogenous vitamin D levels. The message about sun exposure and vitamin D is reaching the general public; however, this finding poses challenges to skin cancer prevention efforts.


Asunto(s)
Conocimientos, Actitudes y Práctica en Salud , Neoplasias Cutáneas/prevención & control , Piel/metabolismo , Sistema Solar , Vitamina D/biosíntesis , Adulto , Anciano , Estudios de Cohortes , Estudios Transversales , Femenino , Conductas Relacionadas con la Salud , Humanos , Masculino , Persona de Mediana Edad
11.
Am J Epidemiol ; 168(7): 831-40, 2008 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-18820277

RESUMEN

Lung cancer cases diagnosed during the period 1975 through 1993 and matched controls were identified in the rosters of Washington County, Maryland residents who had donated blood for a serum bank in 1974 or 1989. Plasma from participants in the 1989 project was assayed for ascorbic acid; serum or plasma was assayed for participants in either project for alpha- and beta-carotene, cryptoxanthin, lutein/zeaxanthin, lycopene, alpha-tocopherol, selenium, and peroxyl radical absorption capacity. Among the total group of 258 cases and 515 controls, serum/plasma concentrations were significantly lower among cases than controls for cryptoxanthin, beta-carotene, and lutein/zeaxanthin with case-control differences of -25.5, -17.1, and -10.1%, respectively. Modest nonsignificant case-control differences in a protective direction were noted for alpha-carotene and ascorbic acid. There were only trivial differences for lycopene, alpha-tocopherol, selenium, and peroxyl radical absorption capacity. Findings are reported for males and females and for persons who had never smoked cigarettes, former smokers, and current smokers at baseline. These results and those from previous studies suggest that beta-carotene is a marker for some protective factor(s) against lung cancer; that cryptoxanthin, alpha-carotene, and ascorbic acid need to be investigated further as potentially protective factors or associates of a protective factor; and that lycopene, alpha-tocopherol, selenium, and peroxyl radical absorption capacity are unlikely to be associated with lung cancer risk. Until specific preventive factors are identified, the best protection against lung cancer is still the avoidance of airborne carcinogens, especially tobacco smoke; second best is the consumption of a diet rich in fruits and vegetables.

13.
Am J Ophthalmol ; 164: 29-36, 2016 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-26748056

RESUMEN

PURPOSE: To describe fluocinolone acetonide implant dissociations in the Multicenter Uveitis Steroid Treatment (MUST) Trial. DESIGN: Randomized clinical trial with extended follow-up. METHODS: Review of data collected on the first implant in the eye(s) of participants. Dissociation was defined as the drug pellet no longer being affixed to the strut and categorized as spontaneous or surgically related. RESULTS: A total of 250 eyes (146 patients) had at least 1 implant placed. Median follow-up time after implant placement was 6 years (range 0.5-9.2 years). Thirty-four dissociations were reported in 30 participants. There were 22 spontaneous events in 22 participants; 6-year cumulative risk of a spontaneous dissociation was 4.8% (95% confidence interval [CI]: 2.4%-9.1%). The earliest event occurred 4.8 years after placement. Nine of 22 eyes with data had a decline in visual acuity ≥5 letters temporally related to the dissociation. Thirty-nine implant removal surgeries were performed, 33 with replacement. Twelve dissociations were noted during implant removal surgeries in 10 participants (26%, 95% CI 15%-48%); 5 of these eyes had a decline in visual acuity ≥5 letters after surgery. The time from implant placement to removal surgery was longer for the surgeries at which dissociated implants were identified than for those without one (5.7 vs 3.7 years, P < .001). Overall, visual acuity declined 15 or more letters from pre-implant values in 22% of affected eyes; declines were frequently associated with complications of uveitis or its treatment. CONCLUSION: There is an increasing risk of dissociation of Retisert implants during follow-up; the risk is greater with removal/exchange surgeries, but the risk of both spontaneous and surgically related events increases with longevity of the implants. In 22% of affected eyes visual acuity declined by 15 letters. In the context of eyes with moderate to severe uveitis for years, this rate is not unexpected.


Asunto(s)
Implantes de Medicamentos/efectos adversos , Falla de Equipo , Fluocinolona Acetonida/efectos adversos , Migración de Cuerpo Extraño/etiología , Glucocorticoides/efectos adversos , Uveítis/tratamiento farmacológico , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Fluocinolona Acetonida/administración & dosificación , Estudios de Seguimiento , Migración de Cuerpo Extraño/diagnóstico , Migración de Cuerpo Extraño/cirugía , Glucocorticoides/administración & dosificación , Humanos , Inyecciones Intravítreas , Masculino , Persona de Mediana Edad , Complicaciones Posoperatorias , Reoperación , Factores de Riesgo , Factores de Tiempo , Agudeza Visual/efectos de los fármacos
14.
PLoS One ; 11(11): e0163716, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27832073

RESUMEN

BACKGROUND: COPD patients have high pulmonary and systemic oxidative stress that correlates with severity of disease. Sulforaphane has been shown to induce expression of antioxidant genes via activation of a transcription factor, nuclear factor erythroid-2 related factor 2 (Nrf2). METHODS: This parallel, placebo-controlled, phase 2, randomized trial was conducted at three US academic medical centers. Patients who met GOLD criteria for COPD and were able to tolerate bronchoscopies were randomly assigned (1:1:1) to receive placebo, 25 µmoles, or 150 µmoles sulforaphane daily by mouth for four weeks. The primary outcomes were changes in Nrf2 target gene expression (NQ01, HO1, AKR1C1 and AKR1C3) in alveolar macrophages and bronchial epithelial cells. Secondary outcomes included measures of oxidative stress and airway inflammation, and pulmonary function tests. RESULTS: Between July 2011 and May 2013, 89 patients were enrolled and randomized. Sulforaphane was absorbed in the patients as evident from their plasma metabolite levels. Changes in Nrf2 target gene expression relative to baseline ranged from 0.79 to 1.45 and there was no consistent pattern among the three groups; the changes were not statistically significantly different from baseline. Changes in measures of inflammation and pulmonary function tests were not different among the groups. Sulforaphane was well tolerated at both dose levels. CONCLUSION: Sulforaphane administered for four weeks at doses of 25 µmoles and 150 µmoles to patients with COPD did not stimulate the expression of Nrf2 target genes or have an effect on levels of other anti-oxidants or markers of inflammation. TRIAL REGISTRATION: Clinicaltrials.gov: NCT01335971.


Asunto(s)
Regulación de la Expresión Génica/efectos de los fármacos , Isotiocianatos/uso terapéutico , Factor 2 Relacionado con NF-E2/metabolismo , Estrés Oxidativo/efectos de los fármacos , Enfermedad Pulmonar Obstructiva Crónica/tratamiento farmacológico , Administración Oral , Anciano , Método Doble Ciego , Femenino , Humanos , Isotiocianatos/administración & dosificación , Isotiocianatos/farmacología , Masculino , Persona de Mediana Edad , Enfermedad Pulmonar Obstructiva Crónica/genética , Enfermedad Pulmonar Obstructiva Crónica/metabolismo , Sulfóxidos
15.
Obstet Gynecol ; 105(1): 174-81, 2005 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-15625160

RESUMEN

OBJECTIVE: Evidence links active cigarette smoking to cervical neoplasia, but much less is known about the role of passive smoking. Using a prospective cohort design, we examined personal cigarette smoking and household passive smoke exposure in relation to the risk of cervical neoplasia. METHODS: Cohorts were established based on data collected on the smoking status of all household members during private censuses of Washington County, Maryland in 1963 (n = 24,792) and 1975 (n = 26,381). Using the Washington County Cancer Registry, the occurrence of cervical neoplasia in the two cohorts was ascertained from 1963-1978 and from 1975-1994. Poisson regression models were fitted to estimate the relative risk of developing cervical neoplasia associated with active and passive smoking in both cohorts. The referent category for all comparisons was never smokers not exposed to passive smoking. RESULTS: The adjusted relative risk and 95% confidence limits for passive smoking was 2.1 (1.3, 3.3) in the 1963 cohort and 1.4 (0.8, 2.4) in the 1975 cohort. The adjusted relative risk and 95% confidence limits for current smoking were 2.6 (1.7, 4.1) and 1.7 (1.1, 2.6) in the 1963 and 1975 cohort, respectively. CONCLUSION: The associations were in the direction of increased risk for both passive smoking and current active smoking in both the 1963 and 1975 cohorts, but were stronger in the 1963 cohort. The results of this long-term, prospective cohort study corroborate the association between active cigarette smoking and cervical neoplasia and provide evidence that passive smoking is a risk factor for cervical neoplasia.


Asunto(s)
Fumar/efectos adversos , Contaminación por Humo de Tabaco/efectos adversos , Displasia del Cuello del Útero/etiología , Neoplasias del Cuello Uterino/etiología , Adulto , Anciano , Estudios de Cohortes , Femenino , Humanos , Persona de Mediana Edad , Factores de Riesgo , Factores Socioeconómicos
16.
Addict Behav ; 29(9): 1763-78, 2004 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-15530720

RESUMEN

Nicotine replacement therapy (NRT) has added to the menu of options available to assist cigarette smokers in quit attempts, but cost remains a barrier to access. A quasi-experimental study was carried out to compare quit rates and continuous abstinence from smoking before (n=601) and after (n=311) free nicotine patches were offered to smokers who participated in the Washington County (Maryland) Health Department's "Stop Smoking for Life" group behavioral cessation program. After free NRT was offered, the quit rates upon completion of the program increased from 38% to 65% [difference 27%; 95% confidence limits (CL) 21%, 34%]. The difference in continuos abstinence from smoking between the two groups was no longer statistically significant after 6 months of follow-up, reflecting the more rapid rate of reversion to smoking that occurred during the 18-month follow-up period among the free NRT group who had quit [adjusted rate ratio (RR) 1.35; 95% CL 1.03, 1.78]. Enrollment during the first 18 months after free NRT was 37% greater than the program's first 18 months (P=.08). In conclusion, adding free nicotine patches to a smoking cessation program was associated with increased program enrollment and significantly increased short-term-but not long-term-quit rates. The rapid reversion to smoking in the group who received free nicotine patches could potentially be obviated if participants extend their use of nicotine patches after the free 6-week supply is exhausted.


Asunto(s)
Nicotina/administración & dosificación , Agonistas Nicotínicos/administración & dosificación , Cese del Hábito de Fumar/métodos , Administración Cutánea , Adulto , Factores de Edad , Anciano , Consejo/métodos , Escolaridad , Femenino , Educación en Salud/métodos , Humanos , Masculino , Persona de Mediana Edad , Recurrencia , Cese del Hábito de Fumar/economía , Prevención del Hábito de Fumar , Factores de Tiempo
18.
Ocul Immunol Inflamm ; 20(2): 104-12, 2012 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-22409563

RESUMEN

PURPOSE: To assess the prevalence of hypotony in patients with severe forms of uveitis. METHODS: The Multicenter Uveitis Steroid Treatment (MUST) Trial, a randomized study, enrolled 255 patients. Patients with hypotony at the baseline visit were identified. RESULTS: Twenty (8.3%) of 240 patients with sufficient data had hypotony. Hypotony was more common in patients with uveitis ≥5 years duration (odds ratio [OR] = 5.0; p < .01), and in eyes with a history of ocular surgery (vitrectomy vs. none, OR = 3.1; p = .03). Hypotony was less in patients with older age of uveitis onset (>51 years vs. <51 years, OR = 0.1; p = .02), in Caucasian patients (OR = 0.1; p < .01) compared to African American patients. Hypotonous eyes were more likely to have visual impairment (OR = 22.9; p < .01). CONCLUSIONS: Hypotony is an important complication of uveitis and more commonly affects African-American patients, those with uveitis onset at a younger age, and those with longer disease duration. It is associated with visual impairment.


Asunto(s)
Corticoesteroides/uso terapéutico , Hipotensión Ocular/etiología , Uveítis/complicaciones , Adolescente , Adulto , Animales , Población Negra/estadística & datos numéricos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Hipotensión Ocular/tratamiento farmacológico , Hipotensión Ocular/epidemiología , Hipotensión Ocular/etnología , Prevalencia , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Uveítis/tratamiento farmacológico , Uveítis/epidemiología , Uveítis/etnología , Agudeza Visual/efectos de los fármacos , Población Blanca/estadística & datos numéricos , Adulto Joven
19.
Int J Cancer ; 121(1): 211-15, 2007 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-17330846

RESUMEN

The objective of this study was to examine the association between nonsteroidal anti-inflammatory drug (NSAID) use and the development of breast cancer, and to assess whether this association differed by estrogen receptor (ER) subtype. Data were analyzed from 15,651 women participating in CLUE II, a cohort study initiated in 1989 in Washington County, MD. Medication data were collected at baseline in 1989 and in 1996. Incident cases of invasive breast cancer occurring from baseline to March 27, 2006 were identified through linkage of cohort participants with the Washington County Cancer Registry and the Maryland State Cancer Registry. Cox proportional hazards modeling was used to calculate the risk ratios (RR) and 95% confidence intervals (95% CI) for breast cancer associated with medication use. Among women in the CLUE II cohort, 418 invasive breast cancer cases were identified during the follow-up period. The results showed that self-reported use of NSAIDs in both 1989 and in 1996 was associated with a 50% reduction in the risk of developing invasive breast cancer compared with no NSAID use in either 1989 or 1996 (RR = 0.50; 95% CI 0.28, 0.91). The protective association between NSAID use and the risk of developing breast cancer was consistent among ER-positive and ER-negative breast cancers, although only the RR for ER-positive breast cancer was statistically significant. Overall, findings from this study indicate that NSAID use is associated with a decrease in breast cancer risk and that the reduction in risk is similar for ER-positive and ER-negative tumors.


Asunto(s)
Antiinflamatorios no Esteroideos/efectos adversos , Neoplasias de la Mama/inducido químicamente , Neoplasias de la Mama/epidemiología , Adulto , Antiinflamatorios no Esteroideos/farmacología , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/patología , Estudios de Cohortes , Femenino , Humanos , Maryland/epidemiología , Persona de Mediana Edad , Metástasis de la Neoplasia/patología , Estudios Prospectivos , Receptores de Estrógenos/clasificación , Receptores de Estrógenos/metabolismo , Factores de Riesgo , Factores de Tiempo
20.
Urology ; 69(4): 721-5, 2007 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-17445658

RESUMEN

OBJECTIVES: To examine the association of cigarette smoking with subsequent fatal prostate cancer. METHODS: Two private censuses were conducted in Washington County, Maryland, in which 26,810 adult men in 1963 and 28,292 in 1975 provided smoking information. Prostate cancer deaths through 2000 (1963 cohort, 240 deaths; and 1975 cohort, 184 deaths) were ascertained by review of the death certificates. Poisson regression analysis was used to estimate the rate ratio of prostate cancer death adjusted for age. RESULTS: Overall, cigarette smokers in the 1963 census cohort were not more likely to die of prostate cancer than those who had never smoked cigarettes, pipes, or cigars when considering the total follow-up period. However, current smokers of 20 or more cigarettes per day (rate ratio 2.38; 95% confidence interval 0.94 to 5.99) and former smokers (rate ratio 2.75; 95% confidence interval 1.13 to 6.74) had a greater risk of death from prostate cancer during the first 10 years of follow-up. Weaker positive associations of prostate cancer death with current and former cigarette smoking were seen during the first 10 years of follow-up in the 1975 census cohort. Current cigarette smoking at baseline was not associated with the prostate cancer incidence. CONCLUSIONS: The lack of an association between cigarette smoking and prostate cancer incidence, but the tendency of greater prostate cancer mortality in former and current cigarette smokers earlier in the follow-up period is consistent with other studies in which smoking was assessed once at baseline.


Asunto(s)
Neoplasias de la Próstata/mortalidad , Fumar/epidemiología , Adolescente , Adulto , Anciano , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Factores de Riesgo , Estados Unidos
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