Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 20
Filtrar
1.
Am J Prev Med ; 2024 Jun 04.
Artigo em Inglês | MEDLINE | ID: mdl-38844149

RESUMO

INTRODUCTION: This study aimed to identify disparate health-related marketing across English- and Spanish-language television networks in New York City, ultimately to inform policy that can counteract disproportionate health-related marketing that provides harmful content to and withholds beneficial information from Latinx populations. METHODS: A 2-week composite sample of primetime English-language (National Broadcasting Company and Columbia Broadcasting System) and Spanish-language (Telemundo and Univision) television networks from YouTube television was randomly drawn from September 7, 2022 to September 27, 2022 in New York City. A total of 9,314 health-related television advertisements were identified for systematic media content analysis and coded into categories: alcohol, core or noncore foods/beverages, mental health/tobacco prevention, health insurance, medical centers, and pharmaceuticals. Analyses conducted in 2022-2024 included intercoder reliability and descriptive and rate difference estimates using total advertisement broadcasting time in the full sample and subsamples by language networks on YouTube television. RESULTS: Spanish television networks broadcast greater health-adverse advertisements per hour for alcohol (rate difference=4.91; 95% CI=3.96, 5.85) and noncore foods/beverages (rate difference=13.43; 95% CI=11.52, 15.34) and fewer health-beneficial advertisements per hour for mental health/tobacco prevention (rate difference= -0.99; 95% CI= -1.45, -0.54), health insurance (rate difference= -1.00; 95% CI= -1.44, -0.57), medical centers (rate difference= -0.55; 95% CI= -1.23, 0.12), and pharmaceuticals (rate difference= -5.72; 95% CI= -7.32, -4.11) than New York City primetime English television networks. CONCLUSIONS: Multilevel policy innovation and implementation are required to mitigate primetime television marketing strategies that contribute to health inequities.

2.
Front Med (Lausanne) ; 10: 1213889, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37901413

RESUMO

Stevens-Johnson Syndrome/Toxic Epidermal Necrolysis (SJS/TEN) is a predominantly drug-induced disease, with a mortality rate of 15-20%, that engages the expertise of multiple disciplines: dermatology, allergy, immunology, clinical pharmacology, burn surgery, ophthalmology, urogynecology, and psychiatry. SJS/TEN has an incidence of 1-5/million persons per year in the United States, with even higher rates globally. One of the challenges of SJS/TEN has been developing the research infrastructure and coordination to answer questions capable of transforming clinical care and leading to improved patient outcomes. SJS/TEN 2021, the third research meeting of its kind, was held as a virtual meeting on August 28-29, 2021. The meeting brought together 428 international scientists, in addition to a community of 140 SJS/TEN survivors and family members. The goal of the meeting was to brainstorm strategies to support the continued growth of an international SJS/TEN research network, bridging science and the community. The community workshop section of the meeting focused on eight primary themes: mental health, eye care, SJS/TEN in children, non-drug induced SJS/TEN, long-term health complications, new advances in mechanisms and basic science, managing long-term scarring, considerations for skin of color, and COVID-19 vaccines. The meeting featured several important updates and identified areas of unmet research and clinical need that will be highlighted in this white paper.

3.
Arthritis Rheumatol ; 75(11): 2014-2026, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37229703

RESUMO

OBJECTIVE: Transcript and protein expression were interrogated to examine gene locus and pathway regulation in the peripheral blood of active adult dermatomyositis (DM) and juvenile DM patients receiving immunosuppressive therapies. METHODS: Expression data from 14 DM and 12 juvenile DM patients were compared to matched healthy controls. Regulatory effects at the transcript and protein level were analyzed by multi-enrichment analysis for assessment of affected pathways within DM and juvenile DM. RESULTS: Expression of 1,124 gene loci were significantly altered at the transcript or protein levels across DM or juvenile DM, with 70 genes shared. A subset of interferon-stimulated genes was elevated, including CXCL10, ISG15, OAS1, CLEC4A, and STAT1. Innate immune markers specific to neutrophil granules and neutrophil extracellular traps were up-regulated in both DM and juvenile DM, including BPI, CTSG, ELANE, LTF, MPO, and MMP8. Pathway analysis revealed up-regulation of PI3K/AKT, ERK, and p38 MAPK signaling, whose central components were broadly up-regulated in DM, while peripheral upstream and downstream components were differentially regulated in both DM and juvenile DM. Up-regulated components shared by DM and juvenile DM included cytokine:receptor pairs LGALS9:HAVCR2, LTF/NAMPT/S100A8/HSPA1A:TLR4, CSF2:CSF2RA, EPO:EPOR, FGF2/FGF8:FGFR, several Bcl-2 components, and numerous glycolytic enzymes. Pathways unique to DM included sirtuin signaling, aryl hydrocarbon receptor signaling, protein ubiquitination, and granzyme B signaling. CONCLUSION: The combination of proteomics and transcript expression by multi-enrichment analysis broadened the identification of up- and down-regulated pathways among active DM and juvenile DM patients. These pathways, particularly those which feed into PI3K/AKT and MAPK signaling and neutrophil degranulation, may be potential therapeutic targets.


Assuntos
Dermatomiosite , Humanos , Adulto , Dermatomiosite/metabolismo , Transcriptoma , Proteômica , Fosfatidilinositol 3-Quinases/genética , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/genética , Proteínas Proto-Oncogênicas c-akt/metabolismo
4.
J Clin Aesthet Dermatol ; 16(1): 14-17, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-36743972

RESUMO

Objective: We sought to describe skin injuries associated with unapproved topical mole and skin tag removers containing concentrated salicylic acid, Sanguinaria canadensis, or other caustic agents. Methods: We identified skin injuries associated with unapproved non-device topical mole and skin tag removers reported to the US Food and Drug Administration (FDA) through October 30, 2021 or described in Amazon consumer product reviews between 2019 and 2021. Results: We identified 38 cases, including 30 from Amazon consumer product reviews and eight reported to the FDA. Twenty-eight were from 2021. The most common reason for use was for mole and/or skin tag removal. Listed ingredients included salicylic acid, Sanguinaria canadensis, botanicals (includes homeopathic products), and calcium oxide. Seven cases involved products without ingredients listed. Adverse events included burns, pain, and ulceration, some resulting in permanent scarring and disfigurement. There were 14 facial injuries, including four adjacent to the eye. Reported treatments included antibiotics, hospital care, wound care, and dermatology advice to have a skin graft. Limitations: Limitations include underreporting of adverse events to the FDA, limited clinical details and potential bias in consumer reviews, and poor replicability of review searches due to the dynamic nature of the Amazon website. Conclusion: Unapproved, non-device topical mole and skin tag removers are associated with serious skin injuries. We found Amazon consumer reviews to be a novel and useful data source for safety surveillance of these types of skin products. When dermatologists are consulted about skin injuries, exposure to these products should be considered in the differential diagnosis.

5.
Clin Cancer Res ; 29(11): 2066-2074, 2023 06 01.
Artigo em Inglês | MEDLINE | ID: mdl-36806911

RESUMO

PURPOSE: Biomarkers that predict response to immune checkpoint inhibitors (ICI) in recurrent or metastatic head and neck squamous cell carcinoma (R/M HNSCC) are needed. This retrospective study assessed tumor mutational burden (TMB) and outcomes in the phase II HAWK and CONDOR and phase III EAGLE studies of durvalumab with or without tremelimumab in platinum-resistant R/M HNSCC. PATIENTS AND METHODS: Tumor samples from HAWK/CONDOR (N = 153) and blood samples from EAGLE (N = 247) were analyzed for TMB. Associations with survival were evaluated for tissue TMB (tTMB) at cutoffs from 10 to 20 mutations/megabase (mut/Mb) and for blood plasma TMB (bTMB) at cutoffs from 8 to 24 mut/Mb. RESULTS: In HAWK/CONDOR, overall survival (OS) with durvalumab with or without tremelimumab was longer for high versus low tTMB: statistically significant differences were observed with durvalumab plus tremelimumab at tTMB ≥ 10 mut/Mb [HR, 0.52 (95% confidence interval, CI, 0.28-0.98)] and tTMB ≥ 12 mut/Mb [HR, 0.46 (95% CI, 0.24-0.86)]. In EAGLE, a significant OS benefit versus chemotherapy was observed with durvalumab and durvalumab plus tremelimumab at bTMB≥16 mut/Mb [HR, 0.39 (95% CI, 0.20-0.76) and 0.38 (95% CI, 0.19-0.78), respectively] but not bTMB < 16 mut/Mb [HR, 0.92 (0.61-1.37) and 0.92 (95% CI, 0.62-1.36), respectively]. A significant progression-free survival benefit was also observed in the ICI arms versus chemotherapy at bTMB ≥ 16 mut/Mb. CONCLUSIONS: Findings support TMB as a biomarker for predicting survival in patients with platinum-resistant R/M HNSCC treated with ICIs. The analysis of EAGLE demonstrated that bTMB was predictive of survival with ICI treatment versus chemotherapy in a large, randomized controlled study population.


Assuntos
Antineoplásicos Imunológicos , Neoplasias de Cabeça e Pescoço , Neoplasias Pulmonares , Humanos , Antineoplásicos Imunológicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/genética , Biomarcadores Tumorais/uso terapêutico , Neoplasias de Cabeça e Pescoço/tratamento farmacológico , Neoplasias de Cabeça e Pescoço/genética , Neoplasias Pulmonares/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/genética , Estudos Retrospectivos , Carcinoma de Células Escamosas de Cabeça e Pescoço/tratamento farmacológico , Carcinoma de Células Escamosas de Cabeça e Pescoço/genética , Resultado do Tratamento
7.
Am J Prev Med ; 63(4): 496-504, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35680481

RESUMO

INTRODUCTION: This study identifies mental health, tobacco prevention, alcohol/beer, food/beverage, pharmaceutical, and other health-related advertisements across Spanish- and English-language TV networks owned by the same parent media company in the U.S. as commercial determinants of health disparities for Latino populations and/or viewers of Spanish-language TV. METHODS: A 3-week composite sample of Telemundo and National Broadcasting Company prime-time TV owned by the same parent media company was randomly drawn from March 31, 2021 to June 12, 2021 in Houston, Texas. A total of 1,593 health-related advertisements were yielded for systematic content analysis. Analyses included intercoder reliability, descriptive and bivariate analysis, and rate ratio and rate difference calculations. RESULTS: Telemundo had significantly more health-adverse and fewer health-beneficial advertisements than National Broadcasting Company. Telemundo broadcasted about 11 more alcohol (95% CI=9.1, 12.5) and 5 more unhealthy/noncore food/beverages (95% CI=2.0, 7.2) advertisements per hour of TV advertisement programming than the National Broadcasting Company. Telemundo also broadcasted about 1 fewer mental health/tobacco prevention (95% CI= -0.9, -0.2), 3 fewer healthy/core food/beverages (95% CI= -1.5, -4.3), and 4 fewer pharmaceutical (95% CI= -2.4, -5.7) advertisements per hour of advertisement programming than the National Broadcasting Company. CONCLUSIONS: Overall greater health-adverse and fewer health-beneficial advertisements are broadcasted on Spanish-language than on English-language TV. Unchecked corporate marketing strategies may serve as a commercial determinant of health disparities for Latino populations by Spanish-language TV.


Assuntos
Publicidade , Televisão , Humanos , Bebidas , Alimentos , Hispânico ou Latino , Preparações Farmacêuticas , Reprodutibilidade dos Testes , Disparidades nos Níveis de Saúde , Promoção da Saúde
8.
J Allergy Clin Immunol ; 150(4): 830-840, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35537502

RESUMO

BACKGROUND: Understanding how asthma biomarkers relate to gene expression signatures could help identify drivers of pathogenesis. OBJECTIVE: This post hoc exploratory analysis of the phase II tralokinumab trial MESOS (ClinicalTrials.gov identifier NCT02449473) aimed to profile baseline airway inflammation in patients with moderate-to-severe asthma. METHODS: The T2 and T17 gene expression signatures, 3-gene mean and 5-gene mean, were calculated through transcriptomic analysis of baseline bronchial brushing samples. Clustering analysis using these signatures identified 3 distinct inflammatory subgroups: T2LOW/T17HIGH (n = 33), T2HIGH/T17LOW (n = 10), and T2LOW/T17LOW (n = 27). RESULTS: Fractional exhaled nitric oxide (Feno) levels were highest for T2HIGH/T17LOW and lowest for T2LOW/T17HIGH (median = 52.0 [range 42.5-116.3] and median = 18.8 [range 6.6-128.6] ppb, respectively; P = .003). High Feno levels were strongly correlated with high T2 gene expression (Spearman ρ = 0.5537; P < .001). Individual genes differentially expressed in patients with elevated levels of Feno, blood and bronchial submucosal eosinophil counts, and IgE level were explored, with cystatin SN (CST1) being the most upregulated gene in all subgroups (4.49- to 34.42-fold upregulation across clinically defined subgroups with high biomarker expression). CONCLUSION: Feno level may be useful to differentiate patients with T2 or T17 gene expression. Elevated Feno levels are associated with high CST1 expression.


Assuntos
Asma , Eosinófilos , Asma/metabolismo , Biomarcadores/análise , Testes Respiratórios , Brônquios/metabolismo , Eosinófilos/metabolismo , Expiração , Expressão Gênica , Humanos , Imunoglobulina E , Óxido Nítrico/metabolismo , Cistatinas Salivares
9.
Clin Cancer Res ; 28(12): 2567-2578, 2022 06 13.
Artigo em Inglês | MEDLINE | ID: mdl-35395080

RESUMO

PURPOSE: PD-L1 is upregulated in glioblastoma and supports immunosuppression. We evaluated PD-L1 blockade with durvalumab among glioblastoma cohorts and investigated potential biomarkers. PATIENTS AND METHODS: MGMT unmethylated newly diagnosed patients received radiotherapy plus durvalumab (cohort A; n = 40). Bevacizumab-naïve, recurrent patients received durvalumab alone (cohort B; n = 31) or in combination with standard bevacizumab (cohort B2; n = 33) or low-dose bevacizumab (cohort B3; n = 33). Bevacizumab-refractory patients received durvalumab plus bevacizumab (cohort C; n = 22). Primary endpoints were: OS-12 (A), PFS-6 (B, B2, B3), and OS-6 (C). Exploratory biomarkers included: a systematic, quantitative, and phenotypic evaluation of circulating immune cells; tumor mutational burden (TMB); and tumor immune activation signature (IAS). RESULTS: No cohort achieved the primary efficacy endpoint. Outcome was comparable among recurrent, bevacizumab-naïve cohorts. No unexpected toxicities were observed. A widespread reduction of effector immune cell subsets was noted among recurrent patients compared with newly diagnosed patients that was partially due to dexamethasone use. A trend of increased CD8+Ki67+ T cells at day 15 was noted among patients who achieved the primary endpoint and were not on dexamethasone. Neither TMB nor IAS predicted outcome. CONCLUSIONS: Patients with recurrent glioblastoma have markedly lower baseline levels of multiple circulating immune cell subsets compared with newly diagnosed patients. An early increase in systemic Ki67+CD8+ cells may warrant further evaluation as a potential biomarker of therapeutic benefit among patients with glioblastoma undergoing checkpoint therapy. Dexamethasone decreased immune cell subsets. PD-L1 blockade and combination with standard or reduced dose bevacizumab was ineffective.


Assuntos
Dexametasona , Glioblastoma , Recidiva Local de Neoplasia , Anticorpos Monoclonais , Antígeno B7-H1/antagonistas & inibidores , Bevacizumab/uso terapêutico , Biomarcadores Tumorais/análise , Dexametasona/uso terapêutico , Glioblastoma/tratamento farmacológico , Glioblastoma/genética , Glioblastoma/patologia , Humanos , Antígeno Ki-67 , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/patologia
10.
Artigo em Inglês | MEDLINE | ID: mdl-35162251

RESUMO

Introduction: Young adults are the second largest segment of the immigrant population in the United States (US). Given recent trends in later age of initiation of tobacco use, we examined variation in use of tobacco products by nativity status for this population group. Methods: Our study included young adults 18-30 years of age sampled in the National Health Interview Survey (2015-2019), a nationally representative sample of the US population. We calculated prevalence of use of any and two or more tobacco products (cigarettes, cigars, pipes, e-cigarettes, and smokeless tobacco) for foreign-born (n = 3096) and US-born (n = 6811) young adults. Logistic regression models were adjusted for age, sex, race-ethnicity, education, and poverty, while accounting for the complex survey design. Results: Foreign-born young adults were significantly less likely to use any tobacco product (Cigarette = 7.3% vs. 10.7%; Cigar = 1.8% vs. 4.8%; E-cigarette = 2.3% vs. 4.5%, respectively; p < 0.01) or poly tobacco use (1.9% vs. 4.2%; p < 0.01) than US-born young adults. Adjusted regression models showed lower odds of poly tobacco use among the foreign-born than their US-born counterparts (Odds Ratio = 0.41, (95% Confidence Interval: 0.26-0.63)). Conclusions: The findings highlight the importance of targeted interventions by nativity status and further tobacco prevention efforts needed for the US-born.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Produtos do Tabaco , Tabaco sem Fumaça , Humanos , Prevalência , Uso de Tabaco/epidemiologia , Estados Unidos/epidemiologia , Adulto Jovem
11.
Cancer Discov ; 11(11): 2828-2845, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34230008

RESUMO

Mutations in the STK11 (LKB1) gene regulate resistance to PD-1/PD-L1 blockade. This study evaluated this association in patients with nonsquamous non-small cell lung cancer (NSCLC) enrolled in three phase I/II trials. STK11 mutations were associated with resistance to the anti-PD-L1 antibody durvalumab (alone/with the anti-CTLA4 antibody tremelimumab) independently of KRAS mutational status, highlighting STK11 as a potential driver of resistance to checkpoint blockade. Retrospective assessments of tumor tissue, whole blood, and serum revealed a unique immune phenotype in patients with STK11 mutations, with increased expression of markers associated with neutrophils (i.e., CXCL2, IL6), Th17 contexture (i.e., IL17A), and immune checkpoints. Associated changes were observed in the periphery. Reduction of STAT3 in the tumor microenvironment using an antisense oligonucleotide reversed immunotherapy resistance in preclinical STK11 knockout models. These results suggest that STK11 mutations may hinder response to checkpoint blockade through mechanisms including suppressive myeloid cell biology, which could be reversed by STAT3-targeted therapy. SIGNIFICANCE: Patients with nonsquamous STK11-mutant (STK11mut) NSCLC are less likely than STK11 wild-type (STK11wt) patients to respond to anti-PD-L1 ± anti-CTLA4 immunotherapies, and their tumors show increased expression of genes and cytokines that activate STAT3 signaling. Preclinically, STAT3 modulation reverses this resistance, suggesting STAT3-targeted agents as potential combination partners for immunotherapies in STK11mut NSCLC.This article is highlighted in the In This Issue feature, p. 2659.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Quinases Proteína-Quinases Ativadas por AMP , Anticorpos Monoclonais , Anticorpos Monoclonais Humanizados , Antígeno B7-H1/metabolismo , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Carcinoma Pulmonar de Células não Pequenas/patologia , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/patologia , Mutação , Proteínas Serina-Treonina Quinases/genética , Estudos Retrospectivos , Fator de Transcrição STAT3/genética , Fator de Transcrição STAT3/metabolismo , Microambiente Tumoral
12.
Artigo em Inglês | MEDLINE | ID: mdl-33557415

RESUMO

Asian Americans have a high burden of cardiovascular disease, yet little is known about the social patterning of cardiovascular health (CVH) in this population. We examined if education (10+ years, and 15.9% for the U.S.-born. All models showed that low education compared to high education was associated with lower odds of having ideal CVH. This pattern remained in adjusted models but became non-significant when controlling for nativity (odds ratio = 0.34, 95% confidence interval: 0.10, 1.13). Models stratified by time in the U.S. were less consistent but showed similar education gradients in CVH. Low education is a risk factor for attaining ideal cardiovascular health among Asian Americans, regardless of time in the U.S.


Assuntos
Asiático , Doenças Cardiovasculares , Pressão Sanguínea , Doenças Cardiovasculares/epidemiologia , Estudos Transversais , Escolaridade , Nível de Saúde , Humanos , Inquéritos Nutricionais , Prevalência , Fatores de Risco , Estados Unidos/epidemiologia
13.
Infectio ; 24(1): 50-53, ene.-mar. 2020. graf
Artigo em Espanhol | LILACS, COLNAL | ID: biblio-1090543

RESUMO

Se presenta el caso de un paciente de 20 días de nacido, procedente de Cartagena (Bolívar), hospitalizado por presentar fiebre de 6 días de evolución asociado a sintomatología respiratoria con evaluación neurológica normal. La ecografía obstétrica evidenció una microcefalia con un percentil de perímetro cefálico <2, con hipoplasia del cuerpo calloso y tomografía axial computarizada de cráneo que reportó diámetros cefálicos disminuidos, finas calcificaciones residuales en región frontal-parietal y cambios atróficos cerebrales subcorticales. Se le inició terapia antibiótica por presentar sepsis neonatal, las pruebas serológicas y la PCR para Zika resultaron positivas. Se decidió dar el alta médica al 6 día por mejoría clínica y no presentar déficit neurológico aparente. Aunque no existe un tratamiento específico, el pilar del manejo de un recién nacido con microcefalia es el seguimiento y la vigilancia futura de las posibles comorbilidades, como epilepsia, parálisis cerebral o retraso cognitivo y motor.


We present the case of a 20-day-old patient from Cartagena (Bolívar), hospitalized for presenting a 6-day fever associated with respiratory symptoms with normal neurological evaluation. The obstetric ultrasound showed a microcephaly with a percentile of cephalic perimeter <2, with hypoplasia of the corpus callosum and computed tomography of the skull that reported decreased cephalic diameters, fine residual calcifications in the frontal-parietal region and atrophic subcortical cerebral changes. Antibiotic therapy was initiated due to neonatal sepsis, the serological tests and the PCR for Zika were positive. It was decided to discharge the hospital after 6 days due to clinical improvement and for not presenting apparent neurological deficit. Although there is no specific treatment, the pillar of the management of a newborn with microcephaly is the monitoring and future surveillance of possible comorbidities, such as epilepsy, cerebral palsy or cognitive and motor retardation.


Assuntos
Humanos , Masculino , Recém-Nascido , Zika virus , Microcefalia , Células-Tronco , Gravidez , Diagnóstico por Imagem , Febre , Antibacterianos
14.
Sci Transl Med ; 11(489)2019 04 24.
Artigo em Inglês | MEDLINE | ID: mdl-31019027

RESUMO

The CD40/CD40L axis plays a central role in the generation of humoral immune responses and is an attractive target for treating autoimmune diseases in the clinic. Here, we report the generation and clinical results of a CD40L binding protein, VIB4920, which lacks an Fc domain, therefore avoiding platelet-related safety issues observed with earlier monoclonal antibody therapeutics that targeted CD40L. VIB4920 blocked downstream CD40 signaling events, resulting in inhibition of human B cell activation and plasma cell differentiation, and did not induce platelet aggregation in preclinical studies. In a phase 1 study in healthy volunteers, VIB4920 suppressed antigen-specific IgG in a dose-dependent fashion after priming and boosting with the T-dependent antigen, KLH. Furthermore, VIB4920 significantly reduced circulating Ki67+ dividing B cells, class-switched memory B cells, and a plasma cell gene signature after immunization. In a phase 1b proof-of-concept study in patients with rheumatoid arthritis, VIB4920 significantly decreased disease activity, achieving low disease activity or clinical remission in more than 50% of patients in the two higher-dose groups. Dose-dependent decreases in rheumatoid factor autoantibodies and Vectra DA biomarker score provide additional evidence that VIB4920 effectively blocked the CD40/CD40L pathway. VIB4920 demonstrated a good overall safety profile in both clinical studies. Together, these data demonstrate the potential of VIB4920 to significantly affect autoimmune disease and humoral immune activation and to support further evaluation of this molecule in inflammatory conditions.


Assuntos
Autoanticorpos/metabolismo , Autoimunidade/fisiologia , Ligante de CD40/metabolismo , Proliferação de Células/fisiologia , Agregação Plaquetária/fisiologia , Artrite Reumatoide/metabolismo , Linfócitos B/metabolismo , Antígenos CD40/metabolismo , Voluntários Saudáveis , Humanos
15.
Clin Exp Rheumatol ; 37(1): 73-80, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30418117

RESUMO

OBJECTIVES: Macrophages possess widespread pro-inflammatory, destructive, and remodelling capabilities that can critically contribute to acute and chronic diseases, such as rheumatoid arthritis (RA). Continuous monitoring and measurement of selective counteraction of macrophage activity in patients require a sensitivity and non-invasive marker. We characterised the VICM (citrullinated and MMP degraded vimentin fragment) biomarker by investigating the release from in vitro activated macrophages and by monitoring the change in serum levels after treatment with the anti-GM-CSFRα-mAb (mavrilimumab). METHODS: Peripheral blood mononuclear cells were isolated, and lipopolysaccharide (LPS) was used to activate the macrophages and calcium chloride (CaCl2) was used to facilitate the citrullination process of vimentin. Supernatants, cell lysates, was collected and analysed by ELISA, and western blotting. RA patients were treated with mavrilimumab+methotrexate or methotrexate alone in a phase 2b study (NCT01706926) once every two weeks for 24 weeks. Serum levels of VICM were measured at baseline and multiple time points post-treatment. In addition, whole blood expression of peptidylarginine deiminase-2 (PAD-2) and matrix metalloproteinase-9 (MMP-9) transcripts were tested by quantitative reverse transcriptase PCR assays at day 0 and day 169 post-treatment. RESULTS: VICM levels were significantly higher at day 5 and 8 in supernatants of activated macrophages compared to controls (p<0.01), which was confirmed by Western blot. In RA patients, VICM correlated with disease activity (DAS28), modified total sharp score (mTSS), joint space narrowing (JSN), joint erosions and CRP at baseline. VICM was dose-dependently and significantly (p<0.01) inhibited by mavrilimumab. This suppression of VICM serum levels was supported by a decreased expression of PAD2 and MMP9 transcripts in patients treated with mavrilimumab. CONCLUSIONS: These data verified that VICM is released by activated macrophages. Treatment of RA patients with mavrilimumab significantly reduced release of VICM and peptidylarginine deiminases-2 (PAD-2) gene expression indicating that mavrilimumab indeed is targeting activated macrophages and that VICM may be a novel blood-based marker of anti-GM-CSF response.


Assuntos
Artrite Reumatoide , Macrófagos/metabolismo , Receptores de Fator Estimulador das Colônias de Granulócitos e Macrófagos/antagonistas & inibidores , Anticorpos Monoclonais , Anticorpos Monoclonais Humanizados , Artrite Reumatoide/tratamento farmacológico , Artrite Reumatoide/imunologia , Artrite Reumatoide/metabolismo , Biomarcadores , Humanos , Leucócitos Mononucleares , Desiminases de Arginina em Proteínas , Receptores de Fator Estimulador das Colônias de Granulócitos e Macrófagos/imunologia
16.
CA Cancer J Clin ; 67(3): 194-232, 2017 05 06.
Artigo em Inglês | MEDLINE | ID: mdl-28436999

RESUMO

Answer questions and earn CME/CNE Patients with breast cancer commonly use complementary and integrative therapies as supportive care during cancer treatment and to manage treatment-related side effects. However, evidence supporting the use of such therapies in the oncology setting is limited. This report provides updated clinical practice guidelines from the Society for Integrative Oncology on the use of integrative therapies for specific clinical indications during and after breast cancer treatment, including anxiety/stress, depression/mood disorders, fatigue, quality of life/physical functioning, chemotherapy-induced nausea and vomiting, lymphedema, chemotherapy-induced peripheral neuropathy, pain, and sleep disturbance. Clinical practice guidelines are based on a systematic literature review from 1990 through 2015. Music therapy, meditation, stress management, and yoga are recommended for anxiety/stress reduction. Meditation, relaxation, yoga, massage, and music therapy are recommended for depression/mood disorders. Meditation and yoga are recommended to improve quality of life. Acupressure and acupuncture are recommended for reducing chemotherapy-induced nausea and vomiting. Acetyl-L-carnitine is not recommended to prevent chemotherapy-induced peripheral neuropathy due to a possibility of harm. No strong evidence supports the use of ingested dietary supplements to manage breast cancer treatment-related side effects. In summary, there is a growing body of evidence supporting the use of integrative therapies, especially mind-body therapies, as effective supportive care strategies during breast cancer treatment. Many integrative practices, however, remain understudied, with insufficient evidence to be definitively recommended or avoided. CA Cancer J Clin 2017;67:194-232. © 2017 American Cancer Society.


Assuntos
Neoplasias da Mama/complicações , Neoplasias da Mama/terapia , Terapias Complementares , Ansiedade/terapia , Neoplasias da Mama/psicologia , Depressão/terapia , Fadiga/terapia , Feminino , Humanos , Linfedema/terapia , Transtornos do Humor/terapia , Náusea/terapia , Doenças do Sistema Nervoso Periférico/terapia , Qualidade de Vida , Transtornos do Sono-Vigília/terapia , Estresse Psicológico/terapia , Vômito/terapia
18.
Dermatol Ther ; 23(6): 606-42, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-21054707

RESUMO

Many inherited skin conditions are associated with underlying malignancies. The astute clinician will be able to recognize many of these cutaneous findings. The identification of these genetic syndromes with cutaneous findings, or genodermatoses, may allow early recognition of internal malignancies and the extension of these patients' life expectancy. Several of these syndromes have established screening and treatment protocols, which should be utilized in the care of affected patients. This article succinctly reviews the dermatologic, clinical, and laboratory findings associated with genodermatoses that have associated internal malignancies. Appropriate treatment and screening recommendations are explored.


Assuntos
Síndromes Paraneoplásicas/genética , Dermatopatias/genética , Predisposição Genética para Doença , Hereditariedade , Humanos , Síndromes Paraneoplásicas/diagnóstico , Síndromes Paraneoplásicas/terapia , Linhagem , Fenótipo , Fatores de Risco , Pele/patologia , Dermatopatias/diagnóstico , Dermatopatias/terapia , Resultado do Tratamento
19.
Arthritis Rheum ; 60(6): 1785-96, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19479852

RESUMO

OBJECTIVE: Type I interferons (IFNs) play an important role in the pathogenesis of systemic lupus erythematosus (SLE). This phase Ia trial was undertaken to evaluate the safety, pharmacokinetics, and immunogenicity of anti-IFNalpha monoclonal antibody (mAb) therapy in SLE. During the trial, we also examined whether overexpression of an IFNalpha/beta-inducible gene signature in whole blood could serve as a pharmacodynamic biomarker to evaluate IFNalpha neutralization and investigated downstream effects of neutralizing IFNalpha on BAFF and other key signaling pathways, i.e., granulocyte-macrophage colony-stimulating factor (GM-CSF), interleukin-10 (IL-10), tumor necrosis factor alpha (TNFalpha), and IL-1beta, in SLE. METHODS: Affymetrix Human Genome U133 Plus 2.0 microarrays were used to profile whole blood and lesional skin of patients receiving standard therapy for mild to moderate SLE. Selected IFNalpha/beta-inducible proteins were analyzed by immunohistochemistry. RESULTS: With the study treatment, we observed anti-IFNalpha mAb-specific and dose-dependent inhibition of overexpression of IFNalpha/beta-inducible genes in whole blood and skin lesions from SLE patients, at both the transcript and the protein levels. In SLE patients with overexpression of messenger RNA for BAFF, TNFalpha, IL-10, IL-1beta, GM-CSF, and their respective inducible gene signatures in whole blood and/or skin lesions, we observed a general trend toward suppression of the expression of these genes and/or gene signatures upon treatment with anti-IFNalpha mAb. CONCLUSION: IFNalpha/beta-inducible gene signatures in whole blood are effective pharmacodynamic biomarkers to evaluate anti-IFNalpha mAb therapy in SLE. Anti-IFNalpha mAb can neutralize overexpression of IFNalpha/beta-inducible genes in whole blood and lesional skin from SLE patients and has profound effects on signaling pathways that may be downstream of IFNalpha in SLE.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Regulação da Expressão Gênica/imunologia , Interferon-alfa/genética , Interferon-alfa/imunologia , Interferon beta/genética , Lúpus Eritematoso Sistêmico/tratamento farmacológico , Lúpus Eritematoso Sistêmico/imunologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticorpos Monoclonais/farmacocinética , Anticorpos Monoclonais/farmacologia , Fator Ativador de Células B/genética , Fator Ativador de Células B/metabolismo , Biomarcadores/metabolismo , Relação Dose-Resposta a Droga , Método Duplo-Cego , Feminino , Regulação da Expressão Gênica/efeitos dos fármacos , Fator Estimulador de Colônias de Granulócitos e Macrófagos/genética , Fator Estimulador de Colônias de Granulócitos e Macrófagos/metabolismo , Humanos , Interferon-alfa/metabolismo , Interferon beta/metabolismo , Interleucina-10/genética , Interleucina-10/metabolismo , Interleucina-1beta/genética , Interleucina-1beta/metabolismo , Lúpus Eritematoso Sistêmico/metabolismo , Masculino , Pessoa de Meia-Idade , Transdução de Sinais/efeitos dos fármacos , Transdução de Sinais/genética , Pele/metabolismo , Pele/patologia , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo
20.
PLoS One ; 3(7): e2737, 2008 Jul 16.
Artigo em Inglês | MEDLINE | ID: mdl-18648529

RESUMO

BACKGROUND: Psoriasis is an immune-mediated disease characterized by aberrant epidermal differentiation, surface scale formation, and marked cutaneous inflammation. To better understand the pathogenesis of this disease and identify potential mediators, we used whole genome array analysis to profile paired lesional and nonlesional psoriatic skin and skin from healthy donors. METHODOLOGY/PRINCIPAL FINDINGS: We observed robust overexpression of type I interferon (IFN)-inducible genes and genomic signatures that indicate T cell and dendritic cell infiltration in lesional skin. Up-regulation of mRNAs for IFN-alpha subtypes was observed in lesional skin compared with nonlesional skin. Enrichment of mature dendritic cells and 2 type I IFN-inducible proteins, STAT1 and ISG15, were observed in the majority of lesional skin biopsies. Concordant overexpression of IFN-gamma and TNF-alpha-inducible gene signatures occurred at the same disease sites. CONCLUSIONS/SIGNIFICANCE: Up-regulation of TNF-alpha and elevation of the TNF-alpha-inducible gene signature in lesional skin underscore the importance of this cytokine in psoriasis; these data describe a molecular basis for the therapeutic activity of anti-TNF-alpha agents. Furthermore, these findings implicate type I IFNs in the pathogenesis of psoriasis. Consistent and significant up-regulation of type I IFNs and their associated gene signatures in psoriatic skin suggest that type I IFNs may be potential therapeutic targets in psoriasis treatment.


Assuntos
Regulação da Expressão Gênica , Interferon Tipo I/metabolismo , Psoríase/terapia , Biópsia , Diferenciação Celular , Análise por Conglomerados , Citocinas/metabolismo , Humanos , Interferon gama/metabolismo , Queratinócitos/metabolismo , Modelos Biológicos , RNA Mensageiro/metabolismo , Fator de Transcrição STAT1/metabolismo , Pele/patologia , Fator de Necrose Tumoral alfa/metabolismo , Ubiquitinas/metabolismo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA