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1.
Harefuah ; 159(11): 783-788, 2020 Nov.
Artigo em Hebraico | MEDLINE | ID: mdl-33210846

RESUMO

INTRODUCTION: Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis is a group of rare diseases of systemic necrotizing vasculitis affecting small and medium-sized vessels and may be associated with the presence of anti- neutrophil cytoplasmic antibody. Vessels in different organs and systems are involved, leading to various clinical manifestations of the disease. We present 3 cases of microscopic polyangiitis which have been diagnosed and treated in one medical department for over 4 years. The first patient presented with a clinical picture resembling idiopathic pulmonary fibrosis (IPF) and the diagnosis of microscopic polyangiitis (MPA) was established only when acute renal failure appeared. With appropriate therapy, the renal function normalized but her respiratory status deteriorated and she died due to pulmonary infection. The second case presented with constitutional symptoms such as general weakness, weight loss, leg edema and elevated CRP. During the investigation, mononeuritis multiplex and then MPA were diagnosed. She was successfully treated. The third patient diagnosed with MPA presented as end stage renal failure and was treated by cyclophosphamide and rituximab. He did not receive cotrimoxazole that was recommended and was hospitalized for pneumocystis jirovecii pneumonia. Despite intensive therapy in the ICU by various antibiotics and mechanical ventilation, his condition deteriorated and the patient died.


Assuntos
Falência Renal Crônica , Poliangiite Microscópica , Anticorpos Anticitoplasma de Neutrófilos , Ciclofosfamida , Feminino , Humanos , Masculino , Poliangiite Microscópica/complicações , Poliangiite Microscópica/diagnóstico , Rituximab
2.
Isr Med Assoc J ; 21(7): 449-453, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31507119

RESUMO

BACKGROUND: Fibromyalgia is a syndrome of unknown etiology that is characterized by widespread pain, which severely impairs quality of life. Several forms of occupational and alternative therapy have demonstrated beneficial effects in fibromyalgia patients. OBJECTIVES: To assess the effects of participation in a floral design course on physical and psychiatric symptoms in a cohort of fibromyalgia patients. METHODS: This study was conducted as an observational study. Women diagnosed with fibromyalgia over the age of 18 were recruited to participate in one of two 12-week flower design (floristry) courses. Demographic details, disease activity indices, and anxiety and depression scores were calculated for all participants at baseline, week 12, and study completion. Physical and mental health of the two groups were compared throughout the study time-points. RESULTS: The study was completed by 61 female fibromyalgia patients who were included in the final analyses; 31 patients participated in the first floristry course and 30 in the second. Significant improvements in the 36-Item Short Form Survey physical and mental health components, visual analog scale, Fibromyalgia Impact Questionnaire, Hamilton Anxiety Rating Scale, and Hamilton Depression Rating Scale scores for the entire study population and for each group separately could be seen following participation in each floristry course. CONCLUSIONS: Participation in a floristry course may lead to a significant improvement in pain and psychiatric symptoms in fibromyalgia patients. These findings highlight the potential benefit of utilizing occupational therapy programs, such as a floristry course, for improving quality of life in fibromyalgia.


Assuntos
Ansiedade/terapia , Terapias Complementares/métodos , Depressão/terapia , Fibromialgia/terapia , Qualidade de Vida , Adulto , Idoso , Ansiedade/psicologia , Estudos de Coortes , Depressão/psicologia , Feminino , Fibromialgia/fisiopatologia , Fibromialgia/psicologia , Flores , Humanos , Pessoa de Meia-Idade , Medição da Dor , Escalas de Graduação Psiquiátrica , Inquéritos e Questionários
4.
N Engl J Med ; 379(8): 796, 2018 08 23.
Artigo em Inglês | MEDLINE | ID: mdl-30136548
6.
Med Health Care Philos ; 18(1): 71-80, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24965073

RESUMO

Research shows that the physician's personal attributes and social characteristics have a strong association with their end-of-life (EOL) decision making. Despite efforts to increase patient, family and surrogate input into EOL decision making, research shows the physician's input to be dominant. Our research finds that physician's social values, independent of religiosity, have a significant association with physician's tendency to withhold or withdraw life sustaining, EOL treatments. It is suggested that physicians employ personal social values in their EOL medical coping, because they have to cope with existential dilemmas posed by the mystery of death, and left unresolved by medical decision making mechanisms such as advanced directives and hospital ethics committees.


Assuntos
Atitude do Pessoal de Saúde , Tomada de Decisões , Médicos/psicologia , Valores Sociais , Assistência Terminal/psicologia , Adulto , Fatores Etários , Feminino , Humanos , Israel , Masculino , Pessoa de Meia-Idade , Médicos/ética , Religião , Assistência Terminal/ética
7.
Immunol Res ; 60(2-3): 165-9, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25391610

RESUMO

We describe herein a 61-year-old woman who presented with fever, night sweats and cough. The diagnosis of pneumonia was established, but with symptom recurrence following antibiotic therapy, further diagnostics were performed. Biopsy via bronchoscopy revealed cryptogenic organizing pneumonia, and later on follow-up, a selective IgG immune deficiency was also diagnosed. Initial treatment of high-dose glucocorticoid therapy induced remission, but with dose reduction recurrence was observed. Intravenous immune globulin treatment was initiated and induced a successful clinical and radiological remission. Few cases of cryptogenic organizing pneumonia and hypogammaglobulinemia have been reported. To our knowledge, this is the fourth case described of cryptogenic organizing pneumonia with a hypogammaglobulinemia state and the first reported case of a selective immune deficiency state treated successfully with intravenous immune globulins.


Assuntos
Pneumonia em Organização Criptogênica/tratamento farmacológico , Pneumonia em Organização Criptogênica/imunologia , Deficiência de IgG/imunologia , Imunoglobulinas Intravenosas/uso terapêutico , Pneumonia em Organização Criptogênica/diagnóstico , Feminino , Humanos , Imunoglobulinas Intravenosas/administração & dosagem , Pessoa de Meia-Idade , Radiografia Torácica , Tomografia Computadorizada por Raios X , Resultado do Tratamento
8.
Clin Rev Allergy Immunol ; 44(1): 23-30, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21394428

RESUMO

Ferritin may play a direct role on the immune system. We sought to determine if elevated levels of ferritin in lupus patients correlate with disease activity and organ involvement in a large cohort. Ferritin levels (gender and age adjusted) were assessed in 274 lupus serum samples utilizing the LIASON Ferritin automated immunoassay method. Significant disease activity was determined if European Consensus Lupus Activity Index (ECLAM)>2 or Systemic Lupus Erythematosus Disease Activity Index (SLEDAI)>4. Utilizing an EXCEL database, we compared elevated ferritin levels to manifestations grouped by organ involvement, serology, and previous therapy. The patients were predominantly female (89%), median age was 37 years old, and disease duration was 10.6 ± 7.7 years. Hyperferritinemia was found in 18.6% of SLE patients. Compared to subjects with normal ferritin levels, a significantly greater proportion of patients with hyperferritinemia had thrombocytopenia (15.4% vs. 33.3%, p=0.003) and lupus anticoagulant (11.3% vs. 29.0%, p=0.01). Additionally, compared to normoferritinemic subjects, hyperferritinemic subjects had significantly higher total aCL (99.7 ± 369 vs. 30.9 ± 17.3 GPI, p=0.02) and aCL IgM antibody levels (75.3 ± 357.4 vs. 9.3 ± 10.3 GPI, p=0.02), and marginally lower aCL IgG antibody levels (9.2 ± 4.9 vs. 9.7 ± 3.9 GPI, p = 0.096). While the ECLAM score significantly correlated with hyperferritinemia (p=0.04), the SLEDAI score was marginally associated with hyperferritinemia (p = 0.1). Serositis was marginally associated with hyperferritinemia, but not with other manifestations. An association with serologic APS was encountered. Hyperferritinemia was associated with thrombocytopenia, lupus anticoagulant, and anti-cardiolipin antibodies suggest that it may be an early marker for secondary antiphospholipid syndrome in SLE patients.


Assuntos
Síndrome Antifosfolipídica/sangue , Síndrome Antifosfolipídica/complicações , Ferritinas/sangue , Lúpus Eritematoso Sistêmico/sangue , Lúpus Eritematoso Sistêmico/complicações , Adulto , Biomarcadores/sangue , Feminino , Ferritinas/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem
9.
Am J Clin Exp Immunol ; 1(1): 49-55, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-23885314

RESUMO

BACKGROUND: Gastrointestinal (GI)-related autoantibodies (Abs) are rarely evaluated in autoimmune diseases (AID) other than inflammatory bowel disease, autoimmune hepatitis and celiac disease. Our aim was to determine the prevalence of these antibodies in a wide spectrum of AID. METHODS: We examined 923 serum samples representing 18 AID and compared them with 338 samples from healthy subjects. We used the BioPlex 2200-immunoassay (Bio-Rad, USA) to test samples for the presence of IgA and IgG directed at gliadin (AGA), tissue-transglutaminase (tTG), and Saccharomyces cerevisiae (ASCA). RESULTS: Prevalence of IgA AGA was significantly higher in antiphospholipid syndrome (APS) (7.1 %, P=0.012) and in pemphigus vulgaris (25%, P =0.008) patients, as compared with healthy controls. Presence of IgG-AGA was more common among Crohn's disease (20.5%, P = 0.023) and rheumatoid arthritis (6.5%, P=0.027) patients. IgG anti tTG were frequently observed in APS (6.1%, P=0.012), in giant cell arteritis (11.5%, P=0.013) and in ulcerative colitis (11.1%, P=0.018) patients, and as expected, higher prevalence of ASCA (IgA 19.3% and IgG 27.7%) was found in Crohn's disease. IgG ASCA were also found in systemic lupus erythematosus (SLE) (4.5%, P=0.01), in Graves' disease (5.7%, P=0.018), in cryoglobulinemia (7.1%, P=0.006), and in patients with vasculitides (6.5%, P=0.002). In contrast, lower prevalence of IgG type AGA was found in SLE (P=0.034), cryoglobulinemia (P=0.019) and vasculitides (P=0.013) patients. CONCLUSIONS: Our findings suggest an association between GI-related- Abs and a wide spectrum of AID. The clinical implication of these findings is yet to be determined.

10.
Clin Rev Allergy Immunol ; 42(2): 189-98, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21287295

RESUMO

Evidence points to an association of prolactin to autoimmune diseases. We examined the correlation between hyperprolactinemia and disease manifestations and activity in a large patient cohort. Age- and sex-adjusted prolactin concentration was assessed in 256 serum samples from lupus patients utilizing the LIASON prolactin automated immunoassay method (DiaSorin S.p.A, Saluggia, Italy). Disease activity was defined as present if European Consensus Lupus Activity Measurement (ECLAM) > 2 or Systemic Lupus Erythematosus Disease Activity Index (SLEDAI) > 4. Lupus manifestations were grouped by organ involvement, laboratory data, and prescribed medications. Hyperprolactinemia was presented in 46/256 (18%) of the cohort. Hyperprolactinemic patients had significantly more serositis (40% vs. 32.4%, p = 0.03) specifically, pleuritis (33% vs. 17%, p = 0.02), pericarditis (30% vs. 12%, p = 0.002), and peritonitis (15% vs. 0.8%, p = 0.003). Hyperprolactinemic subjects exhibited significantly more anemia (42% vs. 26%, p = 0.02) and marginally more proteinuria (65.5% vs. 46%, p = 0.06). Elevated levels of prolactin were not significantly associated with other clinical manifestations, serology, or therapy. Disease activity scores were not associated with hyperprolactinemia. Hyperprolactinemia in lupus patients is associated with all types of serositis and anemia but not with other clinical, serological therapeutic measures or with disease activity. These results suggest that dopamine agonists may be an optional therapy for lupus patients with hyperprolactinemia.


Assuntos
Anemia/imunologia , Hiperprolactinemia/imunologia , Lúpus Eritematoso Sistêmico/imunologia , Prolactina/imunologia , Serosite/imunologia , Adolescente , Adulto , Idoso , Anemia/complicações , Anemia/fisiopatologia , Autoimunidade , Agonistas de Dopamina/uso terapêutico , Feminino , Humanos , Hiperprolactinemia/complicações , Hiperprolactinemia/fisiopatologia , Lúpus Eritematoso Sistêmico/complicações , Lúpus Eritematoso Sistêmico/fisiopatologia , Masculino , Pessoa de Meia-Idade , Prolactina/uso terapêutico , Serosite/complicações , Serosite/fisiopatologia , Adulto Jovem
11.
Autoimmun Rev ; 11(6-7): A465-70, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22155203

RESUMO

Sex hormones, especially estrogen and prolactin (PRL), have an important role in modulating the immune response. PRL is secreted from the pituitary gland as well as other organs and cells particularly lymphocytes. PRL has an immune stimulatory effect and promotes autoimmunity. PRL interferes specifically with B cell tolerance induction, enhances proliferative response to antigens and mitogens and increases the production of immune globulins, cytokines and autoantibodies. Hyperprolactinemia (HPRL) in women present with clinical manifestations of galactorrhea, primary or secondary amenorrhea, delayed menarche or a change in the menses either in the amount or in the regularity. Furthermore in the last 2 decades multi-organ and organ specific autoimmune diseases like systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), Sjogren's syndrome (SS), Hashimoto's thyroiditis (HT), multiple sclerosis (MS), psoriasis, hepatitis C patients, Behçet's disease, peripartum cardiomyopathy (PPCM) and active celiac disease were discussed to be associated with HPRL. There is data showing correlation between PRL level and diseases activity in few diseases. Genetic factors may have a role in humans as in animal models. The PRL isoforms based on the differences in the amino acid sequence and size of the cytoplasmic domain have an important effect on the bioactivity on prolactin receptors (PRL-Rs).


Assuntos
Doenças Autoimunes/metabolismo , Autoimunidade , Hiperprolactinemia , Prolactina/imunologia , Amenorreia/imunologia , Doenças Autoimunes/imunologia , Doenças Autoimunes/patologia , Estrogênios/imunologia , Feminino , Galactorreia/imunologia , Humanos , Hiperprolactinemia/imunologia , Hiperprolactinemia/metabolismo , Hiperprolactinemia/patologia , Gravidez , Complicações na Gravidez/imunologia
12.
Isr Med Assoc J ; 13(2): 91-5, 2011 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-21443034

RESUMO

BACKGROUND: Multiple sclerosis (MS) is a common demyelnating disorder of the central nervous system (CNS) and ethiopathogenesis has yet to be fully elucidated. The disease may present in several clinical forms that are closely associated with disease morbidity. In recent years various environmental and hormonal factors have been implicated in the pathogenesis of autoimmunity. OBJECTIVES: To evaluate ferritin and prolactin levels in MS patients and their correlation with clinical manifestations of the disease. METHODS: Serum samples from 150 multiple sclerosis patients were evaluated for demographic characteristics, clinical parameters as well as prolactin and ferritin levels utilizing the Liaison chemiluminescent immunoassays (DiaSorin, Italy). Sera from 100 matched healthy donors were used as controls. RESULTS: Hyperprolactinemia was documented in 10 of 150 MS patients (6.7%) and hyperferritinemia in 12 (8%), both of which were significantly more common in this group compared with healthy controls (P < 0.01 and P = 0.02 respectively). Among female MS patients, elevated prolactin levels were related to the secondary-progressive type of disease (P = 0.05), whereas hyperferritinemia was associated with male gender (P = 0.03) and with the relapsing-progressive type of the disease (P = 0.02). An inverse association was found between hyperferritinemia and the relapsing-remitting type of MS in male patients (P = 0.05) CONCLUSIONS: Our results suggest a plausible association between these biomarkers and certain clinical types and gender among MS patients. Further studies combining clinical data, CNS imaging and these markers are warranted.


Assuntos
Ferritinas/sangue , Esclerose Múltipla/sangue , Prolactina/sangue , Adulto , Biomarcadores/sangue , Feminino , Humanos , Hiperprolactinemia/epidemiologia , Incidência , Distúrbios do Metabolismo do Ferro/epidemiologia , Masculino , Pessoa de Meia-Idade , Esclerose Múltipla/epidemiologia
13.
Discov Med ; 9(45): 90-7, 2010 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-20193633

RESUMO

Infectious agents contribute to the environmental factors involved in the development of autoimmune diseases possibly through molecular mimicry mechanisms. Hence, it is feasible that vaccinations may also contribute to the mosaic of autoimmunity. Evidence for the association of vaccinations and the development of these diseases is presented in this review. Infrequently reported post-vaccination autoimmune diseases include systemic lupus erythematosus, rheumatoid arthritis, inflammatory myopathies, multiple sclerosis, Guillain-Barré syndrome, and vasculitis. In addition, we will discuss macrophagic myofasciitis, aluminum containing vaccines, and the recent evidence for autoimmunity following the use of human papillomavirus vaccine.


Assuntos
Doenças Autoimunes/etiologia , Doenças Autoimunes/terapia , Vacinas/efeitos adversos , Vacinas/uso terapêutico , Adulto , Artrite Reumatoide/etiologia , Doenças Autoimunes/virologia , Controle de Doenças Transmissíveis , Doenças Transmissíveis/virologia , Síndrome de Guillain-Barré/etiologia , Humanos , Macrófagos/metabolismo , Pessoa de Meia-Idade , Esclerose Múltipla/etiologia , Doenças Musculares/etiologia , Papillomaviridae/metabolismo , Infecções por Papillomavirus/prevenção & controle , Infecções por Papillomavirus/virologia , Vasculite/etiologia
14.
Ann N Y Acad Sci ; 1173: 174-9, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19758147

RESUMO

BACKGROUND: Inflammatory myopathies (IM) are associated with autoimmune diseases. AIM: To evaluate the titers of auto-antibodies specific to various autoimmune diseases in patients with IM compared with controls. METHODS: Sera from 99 IM patients and 100 healthy controls were tested for autoantibodies for vasculitis (myeloperoxidase, PR3, and glomerular basement membrane) and autoimmune gastrointestinal diseases (IgA and IgG antigliadin, antitissue transglutaminase, and Saccharomyces cerevisiae) utilizing the BioPlex 2200 Multiplexed Immunoassay method (Biorad). RESULTS: Antigliadin IgA levels were significantly elevated in IM patients compared with controls (0.37 units +/- 0.44 vs. 0.24 units +/- 0.15, P = 0.017). Antitissue transglutaminase IgA was marginally increased in IM patients versus controls (0.36 units +/- 1.12 vs. 0.2 units +/- 0.0, P = 0.08). CONCLUSIONS: Antibodies to gliadin and tissue transglutaminase characteristic for celiac disease were elevated in patients with IM compared with controls. This may indicate a higher prevalence of gluten sensitivity or celiac disease in IM.


Assuntos
Autoanticorpos/sangue , Gliadina/imunologia , Miosite/diagnóstico , Doença Celíaca/diagnóstico , Estudos Transversais , Feminino , Proteínas de Ligação ao GTP , Humanos , Imunoensaio/métodos , Imunoglobulina A/sangue , Imunoglobulina G/sangue , Masculino , Pessoa de Meia-Idade , Proteína 2 Glutamina gama-Glutamiltransferase , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Transglutaminases/imunologia , Vasculite/diagnóstico
18.
Autoimmun Rev ; 6(8): 537-42, 2007 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-17854745

RESUMO

The autoimmune diseases are more common in females. The sex hormones have an important role in this gender bias, mainly estrogen and prolactin (PRL) which modulate the immune response. PRL is secreted from the pituitary gland and other organs and cells mainly the lymphocytes. PRL has an immunostimulatory effect and promotes autoimmunity: PRL impairs the negative selection of autoreactive B lymphocytes occurring during B cell maturation into fully functional B cells. PRL has an anti-apoptotic effect, enhances proliferative response to antigens and mitogens and enhances the production of immunoglobulins and autoantibodies. Hyperprolactinemia (HPRL) is observed in multi-organ and organ specific autoimmune diseases like systemic lupus erythematosus (SLE) rheumatoid arthritis (RA), Sjogren's syndrome (SS), Hashimoto's thyroiditis (HT) and multiple sclerosis (MS). There is no consistent correlation between PRL levels and disease activity. Murine models and small studies in SLE patients suggest some role of dopamine agonists in the therapy of those diseases. The genetic factor may have a role in humans as in animal models. The PRL isoform has an important effect on the bioactivity on prolactin receptors (PRL-Rs).


Assuntos
Doenças Autoimunes/sangue , Hiperprolactinemia/imunologia , Animais , Doenças Autoimunes/imunologia , Feminino , Humanos , Hiperprolactinemia/genética
19.
Ann N Y Acad Sci ; 1109: 385-400, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17785327

RESUMO

The development of autoimmune diseases may be influenced by hormonal, immunomodulatory, and metabolic pathways. Prolactin (PRL), ferritin, vitamin D, and the tumor marker tissue polypeptide antigen (TPA) were measured in autoimmune diseases: systemic lupus erythematosus (SLE), systemic sclerosis (SSc), rheumatoid arthritis (RA), polymyositis (PM), dermatomyositis (DM), multiple sclerosis (MS), autoimmune thyroid diseases, and antiphospholipid syndrome. Hyperprolactinemia (HPRL) was detected in 24% of PM patients, in 21% of SLE patients, in 6.7% of MS patients, 6% of RA patients, and in 3% of SSc patients. Hyperferritinemia was detected in 23% of SLE patients, 15% of DM patients, 8% of MS patients, and 4% of RA patients. The patients had relatively low levels of 25 OH Vitamin D: the average results (mean +/- SD) were between 9.3 +/- 4.4 to 13.7 +/- 7.1 ng/mL in the different diseases, while the 25 OH Vitamin D concentrations less than 20 ng/mL are regarded as deficient. TPA levels were in the same range of the controls, elevated only in SLE. HPRL, hyperferritinemia, hypovitaminosis D, and TPA levels did not correlate with SLE activity elevated levels of rheumatoid factor or anti-CCP antibodies in RA. HPRL, hyperferritinemia, and hypovitaminosis D have different immunological implications in the pathogenesis of the autoimmune diseases. Preventive treatment with vitamin D or therapy for HPRL with dopamine agonists, may be considered in certain cases. Hyperferritinemia may be used as an acute-phase reactant marker in autoimmune diseases mainly SLE. TPA may be used to indicate the tendency for malignancies.


Assuntos
Doenças Autoimunes/sangue , Doenças Autoimunes/imunologia , Ferritinas/sangue , Prolactina/sangue , Antígeno Polipeptídico Tecidual/sangue , Vitamina D/sangue , Doenças Autoimunes/complicações , Biomarcadores/sangue , Feminino , Humanos , Hiperprolactinemia/sangue , Hiperprolactinemia/complicações , Hiperprolactinemia/imunologia , Masculino , Pessoa de Meia-Idade , Antígeno Polipeptídico Tecidual/imunologia
20.
J Rheumatol ; 34(8): 1664-9, 2007 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-17611986

RESUMO

OBJECTIVE: To investigate the distribution of the A2756G polymorphism of the methionine synthase reductase (MTR) gene in patients with rheumatoid arthritis (RA) treated with methotrexate (MTX) compared with a healthy control group; and to examine the relationships among the A2756G polymorphism, plasma total homocysteine (tHcy), serum folate and vitamin B12 levels, disease activity, and MTX toxicity in patients with RA. METHODS: A cross-sectional study was performed on 86 MTX-treated RA patients, consisting of a clinical interview and physical examination to determine disease activity and MTX-related adverse reactions. Genotype analysis of the MTR gene was performed. Fasting plasma tHcy, serum folate, and vitamin B12 levels were measured. Allele and genotype distributions were compared to a healthy control group. RESULTS: The frequency of the 2756GG genotype (16.3%) in the RA study group was higher than that expected in the general population (3.6%; p < 0.000001). This genotype was associated with MTX-induced accelerated rheumatoid nodulosis (MIARN). No association of disease activity variables or plasma homocysteine with MTR A2756G polymorphisms was observed. The MTR 2756GG genotype, low plasma vitamin B12 levels, and the presence of rheumatoid nodules predicted MIARN. No association of nodulosis with any other indicator of disease activity or medical treatment was found. CONCLUSION: In our population of MTX-treated RA patients the 2756GG genotype of the MTR gene was more common than expected and was associated with MIARN.


Assuntos
Antirreumáticos/efeitos adversos , Artrite Reumatoide/tratamento farmacológico , Artrite Reumatoide/genética , Ferredoxina-NADP Redutase/genética , Metotrexato/efeitos adversos , Polimorfismo de Nucleotídeo Único/genética , Nódulo Reumático/induzido quimicamente , Adulto , Idoso , Antirreumáticos/uso terapêutico , Artrite Reumatoide/sangue , Estudos de Casos e Controles , Estudos Transversais , Feminino , Genótipo , Homocisteína/sangue , Humanos , Masculino , Metotrexato/uso terapêutico , Pessoa de Meia-Idade , Ácidos Pteroilpoliglutâmicos/sangue , Nódulo Reumático/genética , Índice de Gravidade de Doença , Vitamina B 12/sangue
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