Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 2 de 2
Filtrar
Mais filtros










Base de dados
Intervalo de ano de publicação
1.
Blood Adv ; 6(5): 1537-1546, 2022 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-35114690

RESUMO

Vaccination guidelines for patients treated for hematological diseases are typically conservative. Given their high risk for severe COVID-19, it is important to identify those patients that benefit from vaccination. We prospectively quantified serum immunoglobulin G (IgG) antibodies to spike subunit 1 (S1) antigens during and after 2-dose mRNA-1273 (Spikevax/Moderna) vaccination in hematology patients. Obtaining S1 IgG ≥ 300 binding antibody units (BAUs)/mL was considered adequate as it represents the lower level of S1 IgG concentration obtained in healthy individuals, and it correlates with potent virus neutralization. Selected patients (n = 723) were severely immunocompromised owing to their disease or treatment thereof. Nevertheless, >50% of patients obtained S1 IgG ≥ 300 BAUs/mL after 2-dose mRNA-1273. All patients with sickle cell disease or chronic myeloid leukemia obtained adequate antibody concentrations. Around 70% of patients with chronic graft-versus-host disease (cGVHD), multiple myeloma, or untreated chronic lymphocytic leukemia (CLL) obtained S1 IgG ≥ 300 BAUs/mL. Ruxolitinib or hypomethylating therapy but not high-dose chemotherapy blunted responses in myeloid malignancies. Responses in patients with lymphoma, patients with CLL on ibrutinib, and chimeric antigen receptor T-cell recipients were low. The minimal time interval after autologous hematopoietic cell transplantation (HCT) to reach adequate concentrations was <2 months for multiple myeloma, 8 months for lymphoma, and 4 to 6 months after allogeneic HCT. Serum IgG4, absolute B- and natural killer-cell number, and number of immunosuppressants predicted S1 IgG ≥ 300 BAUs/mL. Hematology patients on chemotherapy, shortly after HCT, or with cGVHD should not be precluded from vaccination. This trial was registered at Netherlands Trial Register as #NL9553.


Assuntos
COVID-19 , Hematologia , Vacina de mRNA-1273 contra 2019-nCoV , COVID-19/prevenção & controle , Vacinas contra COVID-19 , Humanos , SARS-CoV-2 , Vacinação
2.
Retina ; 30(7): 1122-7, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20616687

RESUMO

PURPOSE: Vitreomacular adhesion causing vitreomacular traction is a common indication for vitrectomy. It may be avoided by using enzymatic vitreolysis. The MIVI-IIT (traction) study evaluated the ability of a single or repeated injection of microplasmin to release vitreomacular traction. METHODS: This randomized, double-masked, Phase II trial with control sham injection enrolled 60 patients. Patients in each of the 4 cohorts were randomized (4:1) to active treatment or sham injection. In the first 3 cohorts, increasing doses of microplasmin (75, 125, and 175 microg) were administered. In the fourth cohort, an initial injection of 125 microg microplasmin or sham was administered followed 1 month later by an injection of 125 microg microplasmin if no release of adhesion occurred. A third dose was injected 4 weeks later if there was still no release of adhesion. RESULTS: Within 28 days of sham, 75, 125, and 175 microg microplasmin administration, nonsurgical resolution of vitreomacular adhesion was observed in 8, 25, 44, and 27% of the patients, respectively. When the 125 microg dose was repeated up to 3 times, adhesion release was observed in 58% of patients 28 days after the final injection. CONCLUSION: These results provide support for the potential of microplasmin as a nonsurgical treatment for vitreomacular adhesion.


Assuntos
Fibrinolisina/administração & dosagem , Fragmentos de Peptídeos/administração & dosagem , Perfurações Retinianas/tratamento farmacológico , Descolamento do Vítreo/tratamento farmacológico , Idoso , Idoso de 80 Anos ou mais , Método Duplo-Cego , Feminino , Humanos , Injeções , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Aderências Teciduais/tratamento farmacológico , Acuidade Visual , Corpo Vítreo
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA
...