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1.
Public Health ; 179: 27-37, 2020 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-31726398

RESUMO

OBJECTIVES: The prevention of colorectal cancer (CRC) attainable from introducing once-in-a-lifetime flexible sigmoidoscopy (FSIG) screening was assessed. STUDY DESIGN: This is a review of relevant available information for the assessment of the impact and resource demands of FSIG in New Zealand. METHODS: The reduction in bowel cancer incidence achievable by one-off FSIG screening from 50 to 59 years of age, an age group for which bowel screening is not currently offered, was reviewed. The prevention of CRC attainable from an offer of screening at 55 years of age in New Zealand was also estimated. The number and cost of the FSIG screening procedures required and referrals for colonoscopies and the savings in treatment were calculated. RESULTS: Annually, about 27,500 FSIG screening procedures would be required if 50% of those turning 55 years of age accepted an offer of once-in-a-lifetime FSIG screening. This would result in three-four-fold fewer people being referred for colonoscopy than in the national 2-yearly faecal immunochemical test (FIT) screening programme and subsequently reduce demand for colonoscopy from a false-positive FIT. The number of CRC cases prevented would increase over 17 years to more than 300 per year by 2033. After 10-15 years of screening, the annual savings in health service costs, primarily from CRC prevented, were sufficient to completely fund the FSIG screening. CONCLUSIONS: Inclusion of FSIG screening in the national bowel screening programme would significantly reduce both the incidence and mortality of CRC in New Zealand, reduce the colonoscopy demand of current bowel screening and reduce long-term health service costs.


Assuntos
Neoplasias Colorretais/prevenção & controle , Detecção Precoce de Câncer/estatística & dados numéricos , Sigmoidoscopia/estatística & dados numéricos , Neoplasias Colorretais/epidemiologia , Custos e Análise de Custo , Detecção Precoce de Câncer/economia , Feminino , Humanos , Masculino , Programas de Rastreamento/economia , Programas de Rastreamento/métodos , Programas de Rastreamento/estatística & dados numéricos , Pessoa de Meia-Idade , Nova Zelândia/epidemiologia , Sigmoidoscopia/economia
2.
J Eur Acad Dermatol Venereol ; 32(12): 2178-2184, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29846965

RESUMO

BACKGROUND: Psoriasis causes work productivity impairment that increases with disease severity. Whether differential treatment efficacy translates into differential indirect cost savings is unknown. OBJECTIVE: To assess work hours lost and indirect costs associated with secukinumab versus ustekinumab and etanercept in the United Kingdom (UK). METHODS: This was a post hoc analysis of work impairment data collected in the CLEAR study (secukinumab vs. ustekinumab) and applied to the FIXTURE study (secukinumab vs. etanercept). Weighted weekly and annual average indirect costs per patient per treatment were calculated from (i) overall work impairment derived from Work Productivity and Activity Impairment data collected in CLEAR at 16 and 52 weeks by Psoriasis Area and Severity Index (PASI) response level; (ii) weekly/annual work productivity loss by PASI response level; (iii) weekly and annual indirect costs by PASI response level, based on hours of work productivity loss; and (iv) weighted average indirect costs for each treatment. In the primary analysis, work impairment data for employed patients in CLEAR at Week 16 were used to compare secukinumab and ustekinumab. Secondary analyses were conducted at different time points and with patient cohorts, including FIXTURE. RESULTS: In CLEAR, 452 patients (67%) were employed at baseline. At Week 16, percentages of weekly work impairment/mean hours lost decreased with higher PASI: PASI < 50: 22.8%/7.60 h; PASI 50-74: 13.3%/4.45 h; PASI 75-89: 6.4%/2.14 h; PASI ≥ 90: 4.9%/1.65 h. Weighted mean weekly/annual work hours lost were significantly lower for secukinumab than ustekinumab (1.96/102.51 vs. 2.40/125.12; P = 0.0006). Results were consistent for secukinumab versus etanercept (2.29/119.67 vs. 3.59/187.17; Ρ<0.0001). Average annual indirect cost savings with secukinumab were £355 vs. ustekinumab and £1061 versus etanercept. Results at 52 weeks were similar. CONCLUSIONS: Secukinumab significantly reduced work impairment and associated indirect costs of psoriasis compared with ustekinumab and etanercept at Week 16 through 52 in the United Kingdom.


Assuntos
Anticorpos Monoclonais/uso terapêutico , Fármacos Dermatológicos/uso terapêutico , Etanercepte/uso terapêutico , Psoríase/tratamento farmacológico , Ustekinumab/uso terapêutico , Local de Trabalho/economia , Absenteísmo , Adulto , Idoso , Anticorpos Monoclonais Humanizados , Efeitos Psicossociais da Doença , Custos e Análise de Custo , Eficiência , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Presenteísmo/economia , Presenteísmo/estatística & dados numéricos , Psoríase/economia , Índice de Gravidade de Doença , Licença Médica/economia , Licença Médica/estatística & dados numéricos , Reino Unido
3.
J Eur Acad Dermatol Venereol ; 32(12): 2191-2199, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29729105

RESUMO

BACKGROUND: Secukinumab, a fully human monoclonal antibody that selectively neutralizes interleukin 17A, has demonstrated strong and sustained efficacy in adults with moderate to severe psoriasis in clinical trials. OBJECTIVE: This analysis compared the cost per responder of secukinumab as first biologic treatment of moderate to severe psoriasis, with adalimumab, infliximab, etanercept and ustekinumab in Germany. METHODS: A 52-week decision-tree model was developed. Response to treatment was assessed based on the likelihood of achieving a predefined Psoriasis Area and Severity Index (PASI) response to separate the cohort into responders (PASI ≥75), partial responders (PASI 50 to 74) and non-responders (PASI <50). Responders at week 16 continued initial treatment, whereas partial responders and non-responders were switched to standard of care, which included methotrexate, cyclosporine, phototherapy and topical corticosteroids. Sustained response was defined as 16-week response maintained at week 52. A German healthcare system perspective was adopted. Clinical efficacy data were obtained from a mixed-treatment comparison; 2016 resource unit costs from national sources; and adverse events and discontinuation rates from the literature. We calculated cost per PASI 90 responder over week 16 and week 52, as well as cost per sustained responder between weeks 16 and 52. RESULTS: Secukinumab had the lowest cost per PASI 90 responder over 16 weeks (€18 026) compared with ustekinumab (€18 080), adalimumab (€23 499), infliximab (€29 599) and etanercept (€34 037). Over 52 weeks, costs per PASI 90 responder ranged from €42 409 (secukinumab) to €70 363 (etanercept). Likewise, secukinumab had the lowest cost per sustained 52-week PASI 90 responder (€22 690) compared with other biologic treatments. Sensitivity analyses, excluding patient copayments, showed similar results. CONCLUSIONS: First biologic treatment with secukinumab for moderate to severe psoriasis is cost-effective, with lowest cost per responder compared with other biologic treatments in Germany.


Assuntos
Anticorpos Monoclonais/economia , Anticorpos Monoclonais/uso terapêutico , Fármacos Dermatológicos/economia , Fármacos Dermatológicos/uso terapêutico , Psoríase/tratamento farmacológico , Adalimumab/economia , Adalimumab/uso terapêutico , Anticorpos Monoclonais Humanizados , Produtos Biológicos/economia , Produtos Biológicos/uso terapêutico , Análise Custo-Benefício , Etanercepte/economia , Etanercepte/uso terapêutico , Alemanha , Humanos , Infliximab/economia , Infliximab/uso terapêutico , Psoríase/economia , Índice de Gravidade de Doença , Resultado do Tratamento , Ustekinumab/economia , Ustekinumab/uso terapêutico
4.
Allergy ; 73(8): 1724-1734, 2018 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29460968

RESUMO

BACKGROUND: ASSURE-CSU revealed differences in physician and patient reporting of angioedema. This post hoc analysis was conducted to evaluate the actual rate of angioedema in the study population and explore differences between patients with and without angioedema. METHODS: This international observational study assessed 673 patients with inadequately controlled chronic spontaneous urticaria (CSU). Physicians abstracted angioedema data from medical records, which were compared with patient-reported data. Patients in the Yes-angioedema category had angioedema reported in the medical record and a patient-reported source. For those in the No-angioedema category, angioedema was reported in neither the medical record nor a patient-reported source. Those in the Misaligned category had angioedema reported in only one source. Statistical comparisons between Yes-angioedema and No-angioedema categories were conducted for measures of CSU activity, health-related quality of life (HRQoL), productivity and healthcare resource utilization (HCRU). Regression analyses explored the relationship between Dermatology Life Quality Index (DLQI) score and angioedema, adjusting for important covariates. RESULTS: Among evaluable patients, 259 (40.3%), 173 (26.9%) and 211 (32.8%) were in the Yes-angioedema, No-angioedema and Misaligned category, respectively. CSU activity and impact on HRQoL, productivity, and HCRU was greater for Yes-angioedema patients than No-angioedema patients. After covariate adjustment, mean DLQI score was significantly higher (indicating worse HRQoL) for patients with angioedema versus no angioedema (9.88 vs 7.27, P < .001). The Misaligned category had similar results with Yes-angioedema on all outcomes. CONCLUSIONS: Angioedema in CSU seems to be under-reported but has significant negative impacts on HRQoL, daily activities, HCRU and work compared with no angioedema.


Assuntos
Angioedema/complicações , Angioedema/diagnóstico , Urticária/complicações , Urticária/diagnóstico , Atividades Cotidianas , Adulto , Idoso , Idoso de 80 Anos ou mais , Angioedema/economia , Doença Crônica , Feminino , Inquéritos Epidemiológicos , Humanos , Internacionalidade , Masculino , Pessoa de Meia-Idade , Aceitação pelo Paciente de Cuidados de Saúde , Relações Médico-Paciente , Qualidade de Vida , Análise de Regressão , Estudos Retrospectivos , Índice de Gravidade de Doença , Adulto Jovem
5.
Allergy ; 72(12): 2005-2016, 2017 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-28543019

RESUMO

BACKGROUND: Chronic spontaneous urticaria (CSU) can be debilitating, difficult to treat, and frustrating for patients and physicians. Real-world evidence for the burden of CSU is limited. The objective of this study was to document disease duration, treatment history, and disease activity, as well as impact on health-related quality of life (HRQoL) and work among patients with inadequately controlled CSU, and to describe its humanistic, societal, and economic burden. METHODS: This international observational study assessed a cohort of 673 adult patients with CSU whose symptoms persisted for ≥12 months despite treatment. Demographics, disease characteristics, and healthcare resource use in the previous 12 months were collected from medical records. Patient-reported data on urticaria and angioedema symptoms, HRQoL, and work productivity and activity impairment were collected from a survey and a diary. RESULTS: Almost 50% of patients had moderate-to-severe disease activity as reported by Urticaria Activity Score. Mean (SD) Dermatology Life Quality Index and Chronic Urticaria Quality of Life Questionnaire scores were 9.1 (6.62) and 33.6 (20.99), respectively. Chronic spontaneous urticaria markedly interfered with sleep and daily activities. Angioedema in the previous 12 months was reported by 66% of enrolled patients and significantly affected HRQoL. More than 20% of patients reported ≥1 hour per week of missed work; productivity impairment was 27%. These effects increased with increasing disease activity. Significant healthcare resources and costs were incurred to treat CSU. CONCLUSIONS: Chronic spontaneous urticaria has considerable humanistic and economic impacts. Patients with greater disease activity and with angioedema experience greater HRQoL impairments.


Assuntos
Efeitos Psicossociais da Doença , Urticária/epidemiologia , Atividades Cotidianas , Adulto , Idoso , Idoso de 80 Anos ou mais , Doença Crônica , Estudos Transversais , Feminino , Fidelidade a Diretrizes , Custos de Cuidados de Saúde , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Sono , Inquéritos e Questionários , Urticária/diagnóstico , Urticária/terapia , Adulto Jovem
6.
Artigo em Alemão | MEDLINE | ID: mdl-22526858

RESUMO

Coronary heart disease is an important disorder in Western industrialized societies, with regard to both the epidemiologic and economic burden of illness. A modern therapeutic strategy consists of coronary interventions and the implantation of drug-eluting vascular stents. The cost-effectiveness of such drug-eluting stents has been an important subject of health-economic evaluation research in recent years. This article presents two examples of such studies and deals with the question whether existing study projects are able to provide sufficient evidence for allocation decisions in health care. On this basis we discuss important challenges for future health economic analysis. A key conclusion is the need for long-term and cross-sectoral evaluation strategies that could be based on routinely collected health care data. Supplemented by health economic results from clinical trials, the use of such data would lead to a broader data basis for allocation decisions in health care.


Assuntos
Doenças Cardiovasculares/economia , Doenças Cardiovasculares/cirurgia , Atenção à Saúde/economia , Stents Farmacológicos/economia , Custos de Cuidados de Saúde/estatística & dados numéricos , Programas Nacionais de Saúde/economia , Doenças Cardiovasculares/epidemiologia , Alemanha/epidemiologia , Humanos
7.
Herz ; 2012 Feb 02.
Artigo em Inglês | MEDLINE | ID: mdl-22301731

RESUMO

OBJECTIVE: The purpose of the economic evaluation of the German Drug-Eluting Stent (DES) registry includes the investigation of the economic impact and cost-effectiveness of DES compared to bare-metal stents (BMS) and between paclitaxel-eluting (PES) and sirolimus-eluting stents (SES). Here, methodology and initial results are presented. METHODS: Patients were recruited in 2005 and 2006 in 87 centres across Germany. Selection of PES, SES, or BMS was made at the discretion of the cardiologists in charge. Clinical, economic, and quality of life (QoL) data were collected at baseline and up to 12 months. Group comparisons were conducted using Fisher's exact and t test. RESULTS: Overall, 3,930 patients were enrolled: 3,471 (75% male, 65 ± 11 years) received DES and 458 (74% male, 67 ± 11 years) BMS. Among the DES patients, 1,821 received PES (75% male, 65 ± 10 years) and 1,600 SES (76% male, 65 ± 11 years). There were baseline differences in clinical and procedural characteristics but not in QoL. During the hospital stay, major adverse cardiac and cerebrovascular events occurred in 1.6% of DES (PES 1.9%, SES 1.1%) and 2.2% of BMS patients (BMS vs. DES, PES, and SES p = 0.327, 0.706, and 0.098, respectively). Hospital treatment costs were 4,989 ± 1,284  and 3,609 ± 924 , respectively, in DES and BMS patients (p < 0.001) with no significant difference between PES and SES. CONCLUSION: The economic evaluation of the large DES registry demonstrates increased initial hospitalisation costs associated with DES compared to BMS. Further analysis of the economic impact and cost-effectiveness of DES will provide estimates on large "real world" patient populations for decision makers and aid in reimbursement decisions of DES within the German and other health care systems.

8.
Dtsch Med Wochenschr ; 135 Suppl 2: S21-5, 2010 Mar.
Artigo em Alemão | MEDLINE | ID: mdl-20221974

RESUMO

Atrial fibrillation (AF) is the most frequent cardiac arrhythmia. AF affects especially the elderly. The incidence rises with increasing age to over 15% for those over 90 years old. AF is a risk factor for systemic embolism and ischemic stroke. Stroke with AF is more severe with regard to neurologic impairment. In the management of AF an anticoagulation is essential. However, only half of the patients benefit from anticoagulation in therapeutic target ranges. Costs associated with AF accrue to 660 to 924 Mio Euro in Germany with hospitalization being the major cost contributor. Management of stroke patients with AF is at 3000 Euro higher compared to those patients without AF. AF has an impact on patients' wellbeing and impairs patients' quality of life, particularly the symptomatic form. With an increasing ageing of the society it is suggested to ensure that care management for patients with AF will be optimized.


Assuntos
Fibrilação Atrial/epidemiologia , Fibrilação Atrial/terapia , Programas Nacionais de Saúde/economia , Qualidade de Vida/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Anticoagulantes/efeitos adversos , Anticoagulantes/uso terapêutico , Fibrilação Atrial/economia , Fibrilação Atrial/psicologia , Estudos Transversais , Feminino , Alemanha , Inquéritos Epidemiológicos , Humanos , Masculino , Pessoa de Meia-Idade , Dinâmica Populacional , Acidente Vascular Cerebral/economia , Acidente Vascular Cerebral/epidemiologia , Acidente Vascular Cerebral/prevenção & controle
12.
Occup Med (Lond) ; 50(3): 173-81, 2000 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-10912360

RESUMO

The assessment of the risk to hearing from impulse noise exposure may be a problem for the occupational physician because existing legislative and international noise exposure standards deal primarily with continuous noise, and are not valid in excess of the peak exposure limit of 200 pa (140 dB). Noise exposure in excess of this level, for example that due to firearms, is frequently perceived as harmful, but this is not necessarily the case, as impulse noise standards do, in fact, allow exposure with a maximum in the order of 6.3 kPa (170 dB). To illustrate this, a cross-sectional group of electrical transmission workers have been studied who were exposed to significant levels of impulse noise from air blast circuit breakers and firearms. Important hearing loss factors have been identified by means of a specially designed questionnaire. Using the Health & Safety Executive definition, the risk of hearing loss was determined by calculating prevalence odds ratios (ORs) for exposure to these factors. The OR for those with fewer than eight unprotected air blast circuit breaker exposures was 2.27 (95% confidence interval (CI), 1.01-5.08), whilst for those with more than eight exposures the OR was 2.10 (95% CI, 0.97-4.54). For firearm exposure, ORs of 1.61 (95% CI, 0.95-2.74) were noted in the medium exposure group and 2.05 (95% CI, 1.08-3.86) in the high exposure group. When all the factors were included in the model, the most significant factor was age. The study gives support to the impulse noise exposure criteria, confirming the borderline risk from air blast circuit breaker noise exposure and the relative safety of moderate gunfire exposure.


Assuntos
Exposição Ambiental/efeitos adversos , Perda Auditiva Provocada por Ruído/etiologia , Ruído Ocupacional/efeitos adversos , Ruído/efeitos adversos , Adulto , Fatores Etários , Idoso , Estudos Transversais , Perda Auditiva Provocada por Ruído/epidemiologia , Humanos , Pessoa de Meia-Idade , Nova Zelândia/epidemiologia , Medição de Risco , Fatores de Risco
13.
J Healthc Resour Manag ; 15(2): 20-3, 1997 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10166063

RESUMO

This decade the role of the personal computer has shifted dramatically from a desktop device designed to increase individual productivity and efficiency to an instrument of communication linking people and machines in different places with one another. A computer in one city can communicate with another that may be thousands of miles away. Networking is how this is accomplished. Just like the voice network used by the telephone, computer networks transmit data and other information via modems over these same telephone lines. A network can be created over both short and long distances. Networks can be established within a hospital or medical building or over many hospitals or buildings covering many geographic areas. Those confined to one location are called LANs, local area networks. Those that link computers in one building to those at other locations are known as WANs, or wide area networks. The ultimate wide area network is the one we've all been hearing so much about these days--the Internet, and its World Wide Web. Setting up a network is a process that requires careful planning and commitment. To avoid potential pitfalls and to make certain the network you establish meets your needs today and several years down the road, several steps need to be followed. This article reviews the initial steps involved in getting ready to network.


Assuntos
Redes de Comunicação de Computadores/organização & administração , Segurança Computacional , Serviços Contratados/estatística & dados numéricos , Tomada de Decisões , Sistemas de Informação Hospitalar/organização & administração , Capacitação em Serviço , Redes Locais/estatística & dados numéricos , Técnicas de Planejamento , Desenvolvimento de Programas , Estados Unidos
14.
Med Anthropol ; 18(1): 35-60, 1997 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-9458667

RESUMO

Miami is one of the major centers of illegal drug activity and has a significant proportion of AIDS cases among injection drug users (IDUs). Since Needle Exchange Programs (NEP) are illegal and therefore do not exist in the state of Florida, other strategies must play a large role in reducing the transmission of HIV among IDUs. In order to effectively communicate with IDUs about needle safety, it is necessary to understand the practices and culture of IDUs, including where and how the needle/syringes are obtained and used. Data from recent studies conducted in Miami and other local sites indicate that IDUs inject frequently, averaging more than 1,000 per year, per person. While the vast majority of IDUs feel it is very important to clean needles and to use a needle only one time, these sentiments are not always practiced. Furthermore, data indicate that the context where shooting takes place must be considered in the planning of HIV risk reduction interventions. These findings suggest the importance of understanding patterns of drug use, attitudes toward intervention, and the cultural context where risky behaviors occur. Although Needle Exchange Programs are illegal in Florida, intervention programs must still stress the importance of using only new needles, but since new needles cannot always be obtained, IDUs should be taught and motivated not to use contaminated drug paraphernalia.


Assuntos
Síndrome da Imunodeficiência Adquirida/prevenção & controle , Síndrome da Imunodeficiência Adquirida/transmissão , Atitude Frente a Saúde , HIV-1 , Programas de Troca de Agulhas , Abuso de Substâncias por Via Intravenosa/psicologia , Feminino , Política de Saúde , Humanos , Masculino , Assunção de Riscos , Estados Unidos
16.
Regul Toxicol Pharmacol ; 22(1): 95-100, 1995 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-7494907

RESUMO

Copper is an essential micronutrient and a potential toxic metal. The USEPA current maximum contaminant level goal (MCLG, a nonenforceable aspirational health goal) and the required treatment technique action level, both set at 1.3 mg/liter of copper are not adequately protective for infants and children under 10 years of age. Infants and children up to 10 years of age have increased susceptibility to copper toxicity. The two main reasons for the high sensitivity in this population subgroup are the presence of a normally high concentration of copper in the liver during early life and the lack of a fully developed homeostatic mechanism of copper in children under 10 years of age. This sensitive group of infants and children represents approximately 17% of the total U.S. population. The adverse health effects caused by drinking water contaminated with copper are abdominal pain, nausea, vomiting, diarrhea, headache, and dizziness. The proposed drinking water guideline of 0.3 mg/liter for copper was derived by the application of the risk assessment procedures approved by the USEPA. Drinking water containing 0.3 mg/liter of copper will provide approximately 26% of the nutritional requirement of copper. This proposed drinking water guideline (0.3 mg/liter) for copper will adequately protect health of infants, children, and adults.


Assuntos
Cobre/efeitos adversos , Poluentes da Água/efeitos adversos , Abastecimento de Água/legislação & jurisprudência , Adolescente , Adulto , Criança , Pré-Escolar , Política de Saúde , Humanos , Lactente , Recém-Nascido , Nível de Efeito Adverso não Observado , Risco , Estados Unidos , United States Environmental Protection Agency , Abastecimento de Água/normas
17.
J Health Polit Policy Law ; 18(2): 319-37, 1993.
Artigo em Inglês | MEDLINE | ID: mdl-8360452

RESUMO

This study traces the major policy shifts in medical care that have affected disadvantaged African-Americans and the response of this community's medical leadership to these changes. Since World War II policy has passed through three major phases. The first--engagement--ran from the mid-1960s through the mid-1970s. During this phase a community health policy orientation prevailed as national government targeted resources to health care programs for needy blacks and other poor Americans. From the late 1970s to the mid-1980s the period of submersion occurred: black community health professionals and political leaders experienced a new-found inclusion in health policy debate, but, at the same time, broader policy-making circles in government and health care reduced medical resources for the inner-city poor. Finally, in the third phase--crisis recognition--a network developed of community health advocates who seek to reorient the health system so that it addresses needs within urban American's "New Ghettos."


Assuntos
Negro ou Afro-Americano , Serviços de Saúde Comunitária/tendências , Política de Saúde/tendências , Acessibilidade aos Serviços de Saúde/tendências , Humanos , Áreas de Pobreza , Estados Unidos
19.
Ann Allergy ; 56(1): 22-7, 1986 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-3484918

RESUMO

The effect of specific IgG induced by allergy immunotherapy on specific IgE binding in the RAST was assessed by removal of the IgG with staphylococcus protein A bound to Sepharose. In sera from those patients with the highest titers of specific IgG, RAST binding was increased 8% following adsorption of the post-immunotherapy sera while in sera obtained from the same patients before immunotherapy adsorption increased binding only 3%. The effect of allergy immunotherapy on the titrated prick skin test was compared to the effect on the RAST to the same allergen. In nine patients who received the highest dose of grass extract, the area of the titrated prick skin tests was reduced following immunotherapy by 75%. Staphylococcus protein-A adsorption of sera from these patients drawn before immunotherapy resulted in an increase in RAST binding of 2.7% compared to an increase of 6% in sera obtained after immunotherapy, suggesting suppression of RAST binding of only 3% by specific IgG. It is concluded that RAST levels are affected less than prick skin tests by the immunologic response to allergy immunotherapy. Some interference in RAST binding is produced by specific IgG antibody in high titers, but for many critical purposes the degree of interference is not significant.


Assuntos
Hipersensibilidade/imunologia , Imunoglobulina E/farmacologia , Imunoterapia , Absorção , Anticorpos Anti-Idiotípicos/imunologia , Especificidade de Anticorpos , Ligação Competitiva , Humanos , Imunoglobulina G/imunologia , Imunoglobulina G/metabolismo , Teste de Radioalergoadsorção , Testes Cutâneos
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