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PURPOSE: The postnatal period is a vulnerable time for parents and children but epidemiological and health care utilisation data for Germany on parental mental health during early childhood is scarce. This protocol describes the rationale, aim and study design of a population-based cohort study to assess the occurrence and determinants of psychosocial stress and mental health disorders, as well as the use and cost of health care and social services in early childhood. METHODS: As part of the collaborative SKKIPPI project, we will contact a random sample of 30,000 infants listed in the residents' registration offices of three German towns and we expect to include 6,000 mother-child pairs. Both parents are invited to fill out an online screening questionnaire. Mothers with indications of psychosocial stress will be interviewed to assess mental health disorders, regulatory problems of their children, as well as health care and social services utilisation, with a follow-up assessment after 6 months. RESULTS: After description of sociodemographic and health data, we will analyse occurrences, patterns, and potential determinants (maternal age, social status, household factors, migration status etc.) of psychosocial stress and mental health disorders in the mothers and their children in early childhood. CONCLUSIONS: Our study will identify potential risk and protective factors for postnatal mental health and health care utilization of psychosocially burdened families. This will help to improve prevention and treatment strategies to strengthen the parent-child relationship, to reduce persisting vulnerability of children, and to improve health care and social services. TRIAL REGISTRATION: The study has been registered in the German Clinical Trial Registry on February 8th 2019 (DRKS-ID: DRKS00016653).
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Saúde Mental , Pais , Criança , Pré-Escolar , Estudos de Coortes , Feminino , Alemanha/epidemiologia , Humanos , Lactente , Estresse Psicológico/epidemiologiaRESUMO
OBJECTIVE: Articular erosions correlate with disability in rheumatoid arthritis (RA). Biologic agents reduce erosion progression in RA, but erosion healing occurs infrequently. This study was undertaken to assess the effects of the anabolic agent teriparatide on joint erosion volume in RA patients treated with a tumor necrosis factor inhibitor (TNFi). METHODS: We conducted a randomized controlled trial in 24 patients with erosive RA, osteopenia, and disease activity controlled by TNFi treatment for at least 3 months. Half were randomized to receive teriparatide for 1 year and the others constituted a wait-list control group. Subjects and primary rheumatologists were not blinded with regard to treatment assignment, but all outcomes were assessed in a blinded manner. The primary outcome measure was change in erosion volume determined by computed tomography at 6 anatomic sites. Significance within each hand and anatomic site was based on a 2-tailed test, with P values less than 0.05 considered significant. RESULTS: Baseline characteristics of the treatment groups were well balanced. After 52 weeks, the median change in erosion volume in the teriparatide group was -0.4 mm3 (interquartile range [IQR] -34.5, 29.6) and did not differ significantly from that in controls (median change +9.1 mm3 [IQR -29.6, 26.4]) (P = 0.28). No significant difference in change in erosion volume was noted at the radius, ulna, or metacarpophalangeal joints. Bone mineral density improved at the femoral neck and lumbar spine in the teriparatide group. CONCLUSION: Our findings indicate that teriparatide treatment for 1 year does not significantly reduce erosion volume in the hands or wrists of patients with established RA with disease activity controlled by TNFi treatment.
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Artrite Reumatoide/tratamento farmacológico , Conservadores da Densidade Óssea/administração & dosagem , Densidade Óssea/efeitos dos fármacos , Doenças Ósseas Metabólicas/tratamento farmacológico , Teriparatida/administração & dosagem , Idoso , Antirreumáticos/uso terapêutico , Artrite Reumatoide/complicações , Artrite Reumatoide/diagnóstico por imagem , Doenças Ósseas Metabólicas/diagnóstico por imagem , Doenças Ósseas Metabólicas/etiologia , Feminino , Humanos , Masculino , Articulação Metacarpofalângica/diagnóstico por imagem , Articulação Metacarpofalângica/efeitos dos fármacos , Pessoa de Meia-Idade , Rádio (Anatomia)/diagnóstico por imagem , Rádio (Anatomia)/efeitos dos fármacos , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Ulna/diagnóstico por imagem , Ulna/efeitos dos fármacosRESUMO
OBJECTIVES: We sought to examine the relationship between measures of ILD severity and PH in patients with SSc. METHODS: We identified 55 subjects from 12 PHAROS sites with RHC-proven PH and HRCT evidence of ILD. Subjects with PH due to left heart disease were excluded. Baseline HRCT scans were scored by a standardised system that graded severity of ILD. Summary statistics were generated for baseline characteristics. Spearman correlation and linear regression were used to examine relationships between ILD and PH severity variables. RESULTS: The majority of subjects were white women; nearly half had limited cutaneous SSc. Most subjects were New York Heart Association functional class II or III. Pulmonary function testing revealed moderate restriction (mean FVC 64.3 ± 17.2% predicted) with severe reduction in diffusing capacity (mean DLco 34.2 ± 13.3% predicted). RHC demonstrated mild to moderate PH (mean PAP 35 ± 9 mmHg, mean PVR 5.1 ± 3.7 WU). There was no correlation between severity of ILD (by either HRCT or PFT) and cardiac haemodynamic parameters of PH. CONCLUSIONS: No association between severity of ILD and cardiac haemodynamic profiles were identified in this cohort. We believe this underscores the complex nature of PH and ILD in individuals with SSc. We do suspect that some individuals with SSc-ILD will also have concomitant pulmonary vascular disease but simple assessments to grade severity of ILD - by PFT or HRCT estimates of ILD extent - are likely not enough to reliably distinguish between PAH versus PH-ILD. Further research into how to distinguish and manage these subsets is warranted.
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Hipertensão Pulmonar/fisiopatologia , Doenças Pulmonares Intersticiais/fisiopatologia , Pulmão/fisiopatologia , Esclerodermia Difusa/fisiopatologia , Esclerodermia Limitada/fisiopatologia , Idoso , Teste de Esforço , Feminino , Humanos , Hipertensão Pulmonar/diagnóstico por imagem , Hipertensão Pulmonar/etiologia , Pulmão/diagnóstico por imagem , Doenças Pulmonares Intersticiais/diagnóstico por imagem , Doenças Pulmonares Intersticiais/etiologia , Masculino , Pessoa de Meia-Idade , Capacidade de Difusão Pulmonar , Esclerodermia Difusa/complicações , Esclerodermia Difusa/diagnóstico por imagem , Esclerodermia Limitada/complicações , Esclerodermia Limitada/diagnóstico por imagem , Escleroderma Sistêmico/complicações , Escleroderma Sistêmico/diagnóstico por imagem , Índice de Gravidade de Doença , Tomografia Computadorizada por Raios X , Capacidade VitalRESUMO
Both open and endoscopic methods for ulnar nerve decompression have been described. The purpose of this study is to compare the 6-month results of a minimal invasive open technique with an endoscopic technique. We treated 60 patients with unilateral ulnar neuropathy at the elbow, employing both techniques. Six months postoperative we found no differences in treatment effect on pain and disability scores between both groups, but both techniques resulted in an early postoperative relief of symptoms and good patient satisfaction.
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Síndrome do Túnel Ulnar/cirurgia , Descompressão Cirúrgica/métodos , Adulto , Endoscopia , Humanos , Pessoa de Meia-Idade , Procedimentos Cirúrgicos Minimamente InvasivosRESUMO
BACKGROUND: Internationally, there is no consensus on the pathology protocol to be used to examine the sentinel lymph node (SN) in breast cancer patients. Previously, we reported that ultra-staging led to more axillary lymph node dissections (ALND). The question was, whether ultra-staging is effective in reducing the risk of regional relapse. METHODS: From January 2002 to July 2003, 541 patients from 4 hospitals were prospectively registered when they underwent a SN biopsy. In hospitals A, B, and C, 3 levels of the SN were examined pathologically, whereas in hospital D at least 7 additional levels were examined. Patients with a positive SN, including isolated tumor cells, underwent an ALND. This analysis focuses on the 341 patients with a negative SN. Primary endpoint was 5-year regional recurrence rate. RESULTS: In hospital D 34% of the patients had a negative SN as compared to 71% in hospitals A, B, and C combined (p < 0.001). At 5 years follow-up, 9 (2.6%) patients had developed a regional lymph node relapse. In hospital D none of the patients had a regional recurrence, as compared to 9 (2.9%) cases of recurrence in hospitals A, B, and C. CONCLUSION: The less intensified SN pathology protocol appeared to be associated with a slightly increased risk of regional recurrence. The absolute risk was still less than 3%, and does not seem to justify the intensified SN pathology protocol of hospital D.
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Neoplasias da Mama/patologia , Metástase Linfática/patologia , Biópsia de Linfonodo Sentinela , Adulto , Idoso , Axila , Feminino , Humanos , Excisão de Linfonodo , Linfonodos/patologia , Linfonodos/cirurgia , Pessoa de Meia-Idade , Recidiva Local de Neoplasia , Estadiamento de Neoplasias , Estudos Prospectivos , Fatores de Risco , Taxa de SobrevidaRESUMO
Reported success rates for decompressing the radial nerve in patients with radial tunnel syndrome vary between 10 and 95%. The combined treatment, releasing both the posterior interosseous nerve and the superficial branch of the radial nerve, has been described only three times, but seems to show more consistent success rates compared with releasing the posterior interosseous nerve alone. We present the results of decompressing the superficial branch of the radial nerve only, the anatomical basis for this approach and a description of the surgical technique. Our results are comparable to the results of the combined treatment. Eleven of 12 patients were satisfied with the results of the operation. This study indicates that pain in patients with radial tunnel syndrome may be treated successfully by surgical decompression of the superficial branch of the radial nerve.
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Neuropatia Radial/cirurgia , Adolescente , Adulto , Idoso , Cadáver , Descompressão Cirúrgica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto JovemRESUMO
A retrospective study was conducted in order to determine the prevalence and concentration of alcohol in post-mortem blood samples sent for toxicological analysis in Cork City and County in 2003 and 2004. Post mortem reports of these deaths were reviewed for the presence or absence of alcohol at the time of autopsy, blood alcohol concentration (BAC) at time of death, age and sex of the decedents. Of samples sent for blood alcohol analysis (BAA), 38.4% were positive for alcohol. Significant differences were found between the proportions of alcohol positive cases by cause of death. Alcohol positive cases were significantly younger (44.3 +/- 17.8 years) than alcohol negative cases (51.9 +/- 19.4 years) and fifty two percent of drivers were positive for alcohol at the time of death. Awareness of the harmful and potentially fatal effects of alcohol should continue to be raised within the community, so as to prevent future fatalities.
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Consumo de Bebidas Alcoólicas/epidemiologia , Intoxicação Alcoólica/epidemiologia , Causas de Morte/tendências , Médicos Legistas/estatística & dados numéricos , Adulto , Fatores Etários , Consumo de Bebidas Alcoólicas/sangue , Intoxicação Alcoólica/sangue , Autopsia/estatística & dados numéricos , Feminino , Humanos , Irlanda/epidemiologia , Masculino , Prevalência , Fatores de Risco , Fatores SexuaisRESUMO
BACKGROUND: In this study, the potential impact of a new national guideline for adjuvant systemic therapy in breast cancer (introduced in The Netherlands in 1998) was assessed, as well as the modifications of this guideline, issued in 2001. Both the change in total number of patients eligible for adjuvant therapy, as well as the cost-effectiveness of the changed clinical management of these patients were analysed. PATIENTS AND METHODS: Percentages of patients who would be eligible for adjuvant therapy in 1994, 1998 and 2001 were estimated, based on clinical data from 127 patients, who were operated on in 1994. Ten-year overall survival rates were used as a measure of effectiveness, based on the two most recent EBCTCG meta-analyses. Actual resource costs were calculated. With a decision analytic model, the incremental cost-effectiveness ratios (1998 versus 1994, and 2001 versus 1998) were calculated. RESULTS: The introduction of the 1998 guideline resulted in a relative increase of 80% in the total number of patients eligible for adjuvant therapy, compared with 1994 (from 40% to 72% of all patients with primary breast cancer). With an estimated absolute increase of 10-year overall survival of 2%, the 1998 guideline was found to have an expected incremental cost-effectiveness ratio of about 4837 per life-year gained. CONCLUSIONS: Introduction of the new guideline considerably affected the number of patients eligible for adjuvant systemic therapy for breast cancer. The associated incremental cost-effectiveness ratio is well within the range of values that are generally considered acceptable.
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Protocolos de Quimioterapia Combinada Antineoplásica/economia , Neoplasias da Mama/economia , Guias de Prática Clínica como Assunto , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/tratamento farmacológico , Neoplasias da Mama/mortalidade , Estudos de Coortes , Análise Custo-Benefício , Feminino , Humanos , Pessoa de Meia-Idade , Invasividade Neoplásica , Estudos Retrospectivos , Sensibilidade e Especificidade , Biópsia de Linfonodo Sentinela , Taxa de SobrevidaRESUMO
Scleroderma renal crisis is a well-recognized complication of systemic sclerosis (SSc) usually occurring early in the course of the disease in patients with diffuse skin involvement. We report the diagnostic challenge of a case of scleroderma renal crisis associated with massive proteinuria at approximately 20 weeks gestation in a pregnant patient with diffuse cutaneous systemic sclerosis.
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Falência Renal Crônica/etiologia , Complicações na Gravidez , Proteinúria/etiologia , Escleroderma Sistêmico/complicações , Adulto , Anti-Hipertensivos/uso terapêutico , Diagnóstico Diferencial , Quimioterapia Combinada , Feminino , Morte Fetal , Humanos , Hipertensão Renal/tratamento farmacológico , Falência Renal Crônica/patologia , Pré-Eclâmpsia/patologia , Gravidez , Segundo Trimestre da Gravidez , Gravidez de Alto Risco , Proteinúria/fisiopatologia , Escleroderma Sistêmico/patologia , Pele/patologiaRESUMO
Sarcoidosis is a systemic disease that may affect the musculoskeletal system. An association between carpal tunnel syndrome (CTS) and sarcoidosis has not been demonstrated. Consecutive patients from the sarcoidosis clinic at our institution were questioned about history and symptoms of carpal tunnel syndrome: hand numbness and nocturnal paresthesias with relief of symptoms by shaking of the hands (flick sign). A physical exam was performed to evaluate for Tinel's and Phalen's signs. A comparison of the presence of arthritis, prednisone treatment, spirometry, and number of organs involved with sarcoidosis was made in patients with a history or clinical findings of CTS versus those without. Eighty-nine patients were evaluated. Thirty-five patients (39%) had nocturnal paresthesias with a positive flick sign. Fourteen patients (16%) had physical findings of CTS. A history of CTS was present in 14 (16%) of the patients, four of which were documented by EMG. There was no significant difference between the frequency of prednisone treatment in patients with or without CTS history, nocturnal paresthesias, or Phalen's sign. There were significantly fewer patients with a positive Tinel's sign who were receiving prednisone. There was a trend toward an increased frequency of wrist arthritis in patients with a history or clinical findings of CTS. There was no significant difference in disease severity, assessed by spirometry or organ involvement, when comparing sarcoidosis patients with or without a history or clinical findings of CTS. Thirty-nine (44%) had symptoms and/or signs of CTS. Even when we adjusted our sarcoidosis population for other factors associated with CTS, the prevalence of symptoms and signs of CTS was much higher in our patient population than in studies of the general population. Our findings suggest that CTS is common in sarcoidosis.
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Síndrome do Túnel Carpal/complicações , Sarcoidose/complicações , Adulto , Síndrome do Túnel Carpal/fisiopatologia , Feminino , Humanos , Hipestesia/etiologia , Masculino , Nervo Mediano/fisiopatologia , Pessoa de Meia-Idade , Parestesia/etiologia , Sarcoidose/fisiopatologiaRESUMO
WWe present what is believed to be the first absorption and scattering images of in vitro and in vivo bones and joints from continuous-wave tomographic measurements. Human finger and chicken bones embedded in cylindrical scattering media were imaged at multiple transverse planes with Clemson multi-channel diffuse optical imager. Both absorption and scattering images were obtained using our nonlinear, finite element based reconstruction algorithm. This study shows that diffuse optical tomography (DOT) has the potential to be used for detection and monitoring of bone and joint diseases such as osteoporosis and arthritis.
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STUDY OBJECTIVES: To determine the cause of pulmonary hypertension (PH) in systemic sclerosis (SSc) patients since PH can occur because of pulmonary arteriopathy, pulmonary parenchymal destruction, and left ventricular cardiac dysfunction. DESIGN AND SETTING: Consecutive case series in a university hospital. PATIENTS: Nine SSc patients with PH (mean pulmonary artery pressure, 41 mm Hg), with (n = 6) or without (n = 3) concomitant interstitial lung disease (ILD). METHODS: Acute infusion of epoprostenol was begun at 2 ng/kg/min and was titrated upward at a rate of 2 ng/kg/min every 30 min until symptomatic complications developed or pulmonary artery vascular resistance (PVR) was reduced by 50%. RESULTS: Eight of nine patients demonstrated a reduction of > or = 20% in PVR, suggesting that vasoreactivity is common despite the presence of significant ILD. A single patient had no response to infusion with unchanged hemodynamics and oxygenation. One patient developed hypoxemia as cardiac output increased, suggesting a worsening of ventilation/perfusion matching or the presence of an anatomic shunt. Acute pulmonary edema developed in one patient at an infusion rate of 6 ng/kg/min. The results of cardiac catheterization suggested that pulmonary edema was caused by SSc heart disease. CONCLUSION: SSc patients with ILD have diverse and sometimes multiple causes of PH that can be determined by short-term epoprostenol infusion. Beneficial effects can be obtained from epoprostenol despite extensive ILD.
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Anti-Hipertensivos/administração & dosagem , Epoprostenol/administração & dosagem , Hemodinâmica/efeitos dos fármacos , Hipertensão Pulmonar/fisiopatologia , Escleroderma Sistêmico/fisiopatologia , Adulto , Cateterismo Cardíaco , Débito Cardíaco/efeitos dos fármacos , Ecocardiografia Doppler , Feminino , Humanos , Hipertensão Pulmonar/diagnóstico por imagem , Hipertensão Pulmonar/tratamento farmacológico , Hipertensão Pulmonar/etiologia , Infusões Intravenosas , Masculino , Pessoa de Meia-Idade , Pressão Propulsora Pulmonar/efeitos dos fármacos , Escleroderma Sistêmico/complicações , Escleroderma Sistêmico/diagnóstico por imagem , Escleroderma Sistêmico/tratamento farmacológico , Capacidade Pulmonar TotalRESUMO
Lung disease is a major cause of morbidity and is the leading cause of mortality in patients with systemic sclerosis, most commonly occurring as interstitial lung disease or as pulmonary hypertension. Cyclophosphamide has been used to treat the interstitial lung disease and a placebo-controlled trial is planned. Potent pulmonary vasodilators, many of which have been studied in primary pulmonary hypertension, are now undergoing study in patients with systemic sclerosis.
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Hipertensão Pulmonar/etiologia , Doenças Pulmonares Intersticiais/complicações , Escleroderma Sistêmico/complicações , Humanos , Hipertensão Pulmonar/diagnóstico , Hipertensão Pulmonar/terapia , Doenças Pulmonares Intersticiais/diagnóstico , Doenças Pulmonares Intersticiais/terapia , Escleroderma Sistêmico/diagnósticoRESUMO
OBJECTIVE: The pathophysiology of pulmonary fibrosis in patients with systemic sclerosis (SSc) is poorly understood, but a number of recent studies have demonstrated an inflammatory process involving the lower respiratory tract. The objective of the present study was to determine the concentrations of several cytokines in the bronchoalveolar lavage (BAL) fluid of patients with SSc and to assess whether the enhanced expression of certain cytokines is associated with the presence of alveolitis. METHODS: BAL was performed on patients with SSc (with or without alveolitis) and on normal control subjects. Lyophilized BAL fluid samples were assayed by enzyme-linked immunosorbent assay for tumor necrosis factor alpha (TNF alpha), interleukin-1alpha (IL-1alpha), IL-4, IL-6, IL-8, macrophage inflammatory protein 1alpha (MIP-1alpha), and RANTES. RESULTS: There were significant differences between groups in the BAL fluid concentrations of TNF alpha (P = 0.0005, with levels in SSc patients with alveolitis higher than those in normal controls), IL-8 (P = 0.006, with levels in both SSc groups higher than those in normal controls), MIP-1alpha (P = 0.009, with levels in SSc patients with alveolitis higher than those in SSc patients without alveolitis and than those in normal controls), and RANTES (P = 0.03, with levels in SSc patients without alveolitis higher than those in normal controls). With the exception of RANTES, the highest levels were detected in SSc patients with alveolitis. CONCLUSION: Each of these cytokines, either alone or in combination, may play an important role in the pathogenesis of pulmonary fibrosis in SSc.
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Líquido da Lavagem Broncoalveolar , Citocinas/metabolismo , Fibrose Pulmonar/metabolismo , Escleroderma Sistêmico/metabolismo , Adulto , Quimiocina CCL3 , Quimiocina CCL4 , Quimiocina CCL5/metabolismo , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Proteínas Inflamatórias de Macrófagos/metabolismo , Masculino , Pessoa de Meia-Idade , Fibrose Pulmonar/etiologia , Escleroderma Sistêmico/etiologiaRESUMO
Systemic sclerosis is a generalized disorder characterized by fibrosis and microvascular injury in affected organs. Despite being recognized nearly 250 years ago, knowledge regarding pathogenesis remains limited, and treatment remains directed at symptomatic improvement. Early recognition of systemic sclerosis, however, is important in order to monitor for specific disease complications (i.e., fibrosing alveolitis, scleroderma renal crisis) as well as initiate manifestation specific therapies that improve quality of life.
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Escleroderma Sistêmico/fisiopatologia , Humanos , Nefropatias/fisiopatologia , Nefropatias/terapia , Prognóstico , Fibrose Pulmonar/fisiopatologia , Fibrose Pulmonar/terapia , Qualidade de Vida , Escleroderma Sistêmico/diagnóstico , Escleroderma Sistêmico/etiologia , Escleroderma Sistêmico/terapiaRESUMO
The described study was to determine the effects of chronic exposure to 1,1'-ethylidenebis[L-tryptophan] (EBT), a tryptophan contaminant, on cognitive behavior of female C57BL/6 (C57) mice. EBT (also designated as "peak E" or "peak 97") is one of several compounds that are suspect in the eosinophilia-myalgia syndrome (EMS). Groups of female C57 mice (12/group) were injected IP with saline (SAL), tryptophan (TRY), EBT, or an EBT + tryptophan combination (EBT + TRY) over a 6-week period. Previous experiments established that the dosing conditions produce several characteristics of EMS, including dermal inflammation and fibrosis, increased dermal mast cells, and increased levels of quinolinic acid. The mice exposed to EBT + TRY were abnormal during the solution of a Morris water maze problem. First, they had a shorter latency to locate the submerged platform goal during the initial day of training compared to SAL or TRY mice; secondly, they did not show the systematic reduction in latency to locate the platform goal across days of training noted for SAL or TRY mice. These abnormalities occurred in the absence of altered body weight or gross motor activity during the treatment procedure, or in the animal's swim speeds at the time of testing, 3 days after termination of treatment. The results suggest that prolonged exposure to EBT + TRY can alter the reaction to a stressful environment and can alter cognitive behavior.
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Transtornos Cognitivos , Cognição/efeitos dos fármacos , Síndrome de Eosinofilia-Mialgia/psicologia , Atividade Motora/efeitos dos fármacos , Triptofano/análogos & derivados , Análise de Variância , Animais , Peso Corporal/efeitos dos fármacos , Modelos Animais de Doenças , Síndrome de Eosinofilia-Mialgia/induzido quimicamente , Síndrome de Eosinofilia-Mialgia/fisiopatologia , Feminino , Aprendizagem em Labirinto/efeitos dos fármacos , Camundongos , Camundongos Endogâmicos C57BL , Tempo de Reação/efeitos dos fármacos , Natação , Triptofano/farmacologia , Triptofano/toxicidadeRESUMO
The eosinophilia-myalgia syndrome was associated with the ingestion of L-tryptophan products containing a number of contaminants, one of which has been identified as 1,1'-ethylidene-bis-(L-tryptophan) (EBT), also known as peak E or peak 97. In earlier studies, we demonstrated that EBT induces inflammation and fibrosis in dermal and subcutaneous tissue of C57BL/6 mice. Others have shown EBT to be a potent stimulus for fibroblast activation and collagen synthesis in vitro, and dermal tissue from EMS patients reveals evidence of enhanced collagen gene expression. In the present study using Northern blot analysis and in situ hybridization, we demonstrate enhanced expression of genes for types I, III, and VI collagen in the dermis and subcutis of C57BL/6 mice treated with EBT for 3-21 days. Increased type I procollagen mRNA was noted on day 6 of EBT treatment and was followed by enhanced expression of type III and VI procollagen mRNA at day 21. L-Tryptophan, free of contaminants associated with the eosinophilia-myalgia syndrome epidemic, increased dermal collagen mRNA to a lesser extent than did EBT. Increased procollagen gene expression was accompanied by evidence of enhanced TGF-beta 1 expression in the dermis and subcutis. This animal model provides additional evidence for EBT as a causal agent of the eosinophilia-myalgia syndrome and should prove useful in the study of the pathogenesis of that syndrome.
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Colágeno/metabolismo , Síndrome de Eosinofilia-Mialgia/metabolismo , Triptofano/análogos & derivados , Animais , Northern Blotting , Colágeno/genética , Modelos Animais de Doenças , Síndrome de Eosinofilia-Mialgia/patologia , Feminino , Hibridização In Situ , Camundongos , Camundongos Endogâmicos C57BL , RNA Mensageiro , Triptofano/administração & dosagemRESUMO
BACKGROUND: Raynaud's phenomenon, an episodic vascular disorder induced by cold temperatures or stress and characterized by white, blue, and red discoloration of the fingers and toes, may affect up to 20% of the general population. KEY POINTS: Raynaud's phenomenon may exist independently (primary) or in association with an underlying disease (secondary), most commonly systemic sclerosis. The pathophysiologic features include vasospasm, endothelial cell changes, vessel obstructive features, and hemorrheologic factors. Raynaud's phenomenon is the initial manifestation of disease in 70% of patients with systemic sclerosis, in whom it may be present for many years before the development of the connective tissue disease. Patients with primary Raynaud's phenomenon need only conservative management and should be reassured that digital ischemia and loss of tissue occur extremely rarely. Pharmacologic agents that have been studied include vasodilators, platelet inhibitors, serotonin antagonists, and fibrinolytics. CONCLUSIONS: For prognostic and therapeutic reasons, it is important to determine if Raynaud's phenomenon is associated with an underlying condition and if the patient may develop a connective tissue disease.
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Doença de Raynaud , Síndrome CREST , Doenças do Tecido Conjuntivo , Diagnóstico Diferencial , Feminino , Dedos/irrigação sanguínea , Humanos , Masculino , Doença de Raynaud/classificação , Doença de Raynaud/complicações , Doença de Raynaud/diagnóstico , Doença de Raynaud/epidemiologia , Doença de Raynaud/terapiaRESUMO
Eosinophilia-myalgia syndrome, a recently described illness, reached epidemic proportions in 1989 and was linked to the ingestion of L-tryptophan containing trace amounts of several contaminants. Eosinophilia-myalgia syndrome shares many clinical and pathologic similarities with toxic-oil syndrome, an epidemic linked to the ingestion of adulterated cooking oil that occurred in Spain in 1981, and to diffuse fasciitis with eosinophilia, a condition first described in 1974. Over the past year, much work has been done in understanding the etiology and pathogenesis of eosinophilia-myalgia syndrome and toxic-oil syndrome. Follow-up data detailing the long-term sequelae and mortality rates for these two conditions are becoming available. The results from these studies are reviewed in this paper.