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1.
Sci Rep ; 13(1): 3486, 2023 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-36859448

RESUMO

Stress-eating (eating more or more unhealthily in order to accommodate to stress), contributes to the development and maintenance of obesity. The effect of comprehensive weight loss interventions on changes in stress-eating as well as the contributing role of stress-eating on weight reduction has not been examined. The impact of the 8-week intensive phase of the Healthy Lifestyle Community Programme (HLCP, cohort 1) on emotional, external and restrained eating, as expressions of stress-eating was evaluated in a non-randomized controlled trial. Intervention: 14 seminars (twice per week, including practical units), complemented by stress-regulation and cooking workshops and coaching sessions empowering participants to change their behaviour towards a healthy plant-based diet (ad libitum), stress regulation, regular exercise and to focus on social support. Participants were recruited from the general population. In the intervention group, 91 participants (IG; age: 56 ± 10, 77% female) and in the control group, 52 (CG; age: 62 ± 14, 57% female) were enrolled. At baseline, participants of the IG reported higher levels of stress (9.7 ± 5.4 points [P] vs. 7.6 ± 6.2; p < 0.011), and of emotional eating (27.9 ± 9.4 vs. 20.0 ± 7.1; p < 0.001) and external eating (29.1 ± 4.9 vs. 25.5 ± 5.6; p < 0.001) than participants of the CG. Within 8 weeks, in the IG, scores of emotional eating (- 3.5 ± 5.4 P) and external eating significantly decreased (= - 2.0 ± 3.8 P), while restrained eating increased (2.7 ± 5.0 P; p for all < 0.001). Weight change was negatively correlated with change of external eating (R2 = 0.045; CC = - 0.285; p = 0.014), indicating that a greater weight change was associated with a smaller change of external eating. This is the first study to prospectively investigate the role of stress-eating on the weight reduction effect of comprehensive lifestyle interventions. Our data confirm that overweight is associated with EE and external eating and suggest that the HLCP is capable to reduce both, weight and stress-eating.Trial registration: German Clinical Trials Register (DRKS; reference: DRKS00018821; September 18th 2019; retrospectively registered).


Assuntos
Estilo de Vida Saudável , Projetos de Pesquisa , Humanos , Pessoa de Meia-Idade , Idoso , Dieta Saudável , Estilo de Vida , Redução de Peso
2.
Front Aging ; 4: 1085511, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36970730

RESUMO

Oxidative stress plays a critical role in the pathogenesis of chronic diseases. Therefore, improvement of oxidative stress status through lifestyle intervention can play a vital role in preventing and treating chronic diseases. This systematic review aims to provide an overview of articles published in the last decade examining the association between lifestyle intervention and oxidative stress biomarkers in the context of non-communicable diseases. The electronic databases PubMed and Web of Science were searched for relevant studies, following the PRISMA (Preferred Reporting of Systematic Reviews and Meta-Analyses) guidelines. This systematic review focused on the four important oxidative stress biomarkers; glutathione (GSH), superoxide dismutase (SOD), catalase, and malondialdehyde. 671 articles were identified, of which nine met the inclusion criteria. A trend emerged, showing that lifestyle modifications that focus on diet and physical health can improve oxidative stress in the form of an increase in superoxide dismutase and CAT levels and a decrease in Malondialdehyde levels in participants with non-communicable diseases (NCDs), GSH levels were not affected. However, the results are difficult to compare because of the heterogeneity of the methods of the biomarkers studied. Our review indicates that oxidative stress can be influenced by lifestyle modifications and may be an effective tool for the prevention and management of non-communicable diseases. This review also elucidated the importance of analyzing multiple oxidative stress biomarkers to evaluate oxidative stress, it further highlights the need to conduct long-term lifestyle intervention studies on oxidative stress biomarkers to understand the connection between oxidative stress biomarkers, NCDs and Lifestyle intervention.

3.
Chronic Stress (Thousand Oaks) ; 6: 24705470221099206, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36187212

RESUMO

Background: Stress and cortisol dysregulation are linked to NCDs. Moreover, stress favours unhealthy lifestyle patterns, which increase the risk for NCDs. The role of the Cortisol Awakening Response (CAR) and the effect of lifestyle interventions on the same remain unclear. Methods: The impact of the intensive 8-week phase of the Healthy Lifestyle Community Programme (HLCP, cohort 1) on parameters of the CAR, ie cortisol values 0 (sample [S]1), 30), 45 and 60 minutes post-awakening, average peak, S1-peak delta and area under the increase curve (AUCI), and perceived stress levels (PSL) was evaluated in a non-randomized, controlled trial. Covariates of the CAR (eg sleep measures) and irregularities in sampling were assessed. The intervention focussed on stress management, a healthy diet, regular exercise, and social support. Participants were recruited from the general population. Multiple linear regression analyses were conducted. Results: 97 participants (age: 56 ± 10 years; 71% female), with 68 in the intervention group (IG; age: 55 ± 8, 77% female) and 29 participants in the control group (CG; age: 59 ± 12, 59% female), were included in the analysis. The baseline characteristics of both groups were comparable, except participants of IG were younger. On average, the PSL at baseline was low in both groups (IG: 9.7 ± 5.4 points; CG: 8.5 ± 6.9 points; p = .165), but 22% (n = 15) in the IG and 20% (n = 6) in the CG reported a high PSL. Most participants reported irregularities in CAR sampling, eg interruption of sleep (IG: 80% CG: 81%). After 8 weeks, most CAR parameters and the PSL decreased in the IG and CG, resulting in no differences of change between the groups. In the IG only, a decrease of PSL was linked to an increase of CAR parameters, eg AUCI (correlation coefficient = -0.307; p = .017). Conclusion: The HLCP may potentially reduce PSL and change the CAR, but results cannot be clearly attributed to the programme. Methodological challenges and multiple confounders, limit suitability of the CAR in the context of lifestyle interventions. Other measures (eg hair-cortisol) may give further insights. Trial registration: German Clinical Trials Register (DRKS); DRKS00018821; www.drks.de.

4.
BMJ Nutr Prev Health ; 5(1): 44-54, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35814727

RESUMO

Background: The potential of adopting a healthy lifestyle to fight non-communicable diseases (NCDs) is not fully used. We hypothesised that the Healthy Lifestyle Community Programme (HLCP, cohort 1) reduces weight and other risk markers compared with baseline and control. Methods: 24-month, non-randomised, controlled intervention trial. Intervention: intensive 8-week phase with seminars, workshops and coaching focusing on a healthy lifestyle (eg, plant-based diet, physical activity, stress management) and group support followed by a 22-month alumni phase. Weight reduction as the primary outcome and other NCD risk parameters were assessed at six time points. Participants were recruited from the general population. Multiple linear regression analyses were conducted. Results: 143 participants (58±12 years, 71% female) were enrolled (91 in the intervention (IG) and 52 in the control group (CG)). Groups' baseline characteristics were comparable, except participants of IG were younger, more often females, overweight and reported lower energy intake (kcal/day). Weight significantly decreased in IG at all follow-ups by -1.5 ± 1.9 kg after 8 weeks to -1.9 ± 4.0 kg after 24 months and more than in CG (except after 24 months). Being male, in the IG or overweight at baseline and having a university degree predicted more weight loss. After the intervention, there were more participants in the IG with a 'high' adherence (+12%) to plant-based food patterns. The change of other risk parameters was most distinct after 8 weeks and in people at elevated risk. Diabetes-related risk parameters did not improve. Conclusion: The HLCP was able to reduce weight and to improve aspects of the NCD risk profile. Weight loss in the IG was moderate but maintained for 24 months. Participants of lower educational status might benefit from even more practical units. Future interventions should aim to include more participants at higher risk. Trial registration number: DRKS00018821.

5.
BMC Gastroenterol ; 18(1): 88, 2018 Jun 18.
Artigo em Inglês | MEDLINE | ID: mdl-29914414

RESUMO

BACKGROUND: Crohn's Disease (CD) is typically characterized by abdominal symptoms, however, besides gastrointestinal symptoms, CD patients may suffer from extraintestinal manifestations which are far less common and medical treatment can be challenging. CASE PRESENTATION: We report about a 34-year-old Crohn's Disease (CD) patient in clinical remission under adalimumab therapy who presented in the clinic for Cranio-Maxillo Surgery due to severe pain in the mandibular area. Ulcerative lesions of the buccal-side mucosa of the right mandible were detected. To rule out malignancy, a biopsy was obtained and revealed ulcerative stomatitis with noncaseating granulomas consistent with oral CD. Shortening the adalimumab administration interval to weekly injections resulted in a complete healing of the oral CD lesions without residual inflammation. CONCLUSION: The case presented here demonstrates that gastroenterologists should evaluate and consider oral CD lesions as a possible marker of disease activity in patients despite having quiescent intestinal CD.


Assuntos
Adalimumab/administração & dosagem , Anti-Inflamatórios/administração & dosagem , Doença de Crohn/tratamento farmacológico , Estomatite/tratamento farmacológico , Fator de Necrose Tumoral alfa/antagonistas & inibidores , Adulto , Doença de Crohn/diagnóstico , Doença de Crohn/patologia , Esquema de Medicação , Humanos , Masculino , Estomatite/diagnóstico , Estomatite/patologia
6.
Inflamm Bowel Dis ; 22(10): 2341-55, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27607334

RESUMO

BACKGROUND: Inflammatory bowel disease is a chronic-remittent disorder with the risk of disabling complications due to uncontrolled inflammation. Accurate biomarkers are needed to noninvasively monitor the disease course to tailor therapy. We evaluated the potential of the specific microRNA (miR)-320a to monitor disease activity in experimental colitis or patients with Crohn's disease and investigated its functional role in intestinal epithelial barrier formation. METHODS: The impact of miR-320a on intestinal barrier function was tested in vitro in T84 epithelial cells by transepithelial resistance measurement and quantitative real-time polymerase chain reaction analysis on inflammatory and microbial stimulation. Experimental colitis was studied in dextran sodium sulfate colitis, T-cell transfer colitis, and IL-10 mice. Disease course was monitored by body weight measurement, colonoscopy, and histological examination. MiR-320a expression during inflammation was assessed in T84 cells, murine blood, and colonic tissue and in peripheral blood from patients with Crohn's disease with active or quiescent disease. RESULTS: MiR-320a transfection of T84 cells reinforced barrier integrity reflected by increased transepithelial resistance (P < 0.01) and inhibited barrier-destructive enteropathogenic Escherichia coli effects resulting in increased tight junction protein JAM-A expression (P = 0.02) and decrease of barrier integrity-destabilizing miR-320a target PPP2R5B (P < 0.001). Tumor necrosis factor-α and interleukin-1ß stimulation increased a miR-320a epxression in T84 cells. MiR-320a level was increased in blood samples from colitic mice and patients with Crohn's disease showing a strong correlation with disease activity (r = 0.67). CONCLUSIONS: MiR-320a strengthens intestinal barrier function in vitro and has the potential to monitor disease activity of colitic mice. Future studies are needed to further evaluate the potential of miR-320a in patients with inflammatory bowel disease.


Assuntos
Colite/metabolismo , Doença de Crohn/metabolismo , Mucosa Intestinal/metabolismo , MicroRNAs/fisiologia , Adulto , Animais , Colite/induzido quimicamente , Colite/genética , Colo/metabolismo , Doença de Crohn/genética , Sulfato de Dextrana , Feminino , Humanos , Interleucina-1beta/metabolismo , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Junções Íntimas/metabolismo , Fator de Necrose Tumoral alfa/metabolismo
7.
Dig Dis Sci ; 60(2): 492-501, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25280558

RESUMO

BACKGROUND AND AIM: Ulcerative colitis increases the risk of developing dysplasia and colitis-associated cancer (CAC). The purpose of this study was to determine the risk factors as well as protective measures for disease burden, need for colectomy and the development of CAC in ulcerative colitis (UC) patients. METHODS: A cohort of n = 434 UC patients was evaluated. Data analysis was performed by univariate and multivariate logistic regression. Odds ratios (OR) and 95 % confidence intervals (CI) were calculated, and significance was assessed by the likelihood ratio test. RESULTS: Mean patient age at UC diagnosis was 45.7 ± 15.1 years which manifested mainly as pancolitis (47 %) or left-sided colitis (45.2 %). CAC was detected in ten patients (2.3 %). UC disease duration was strongly associated with the risk of CAC (P < 0.0014); disease duration between 9 and 15 years: OR of 2.5 (95 % CI 0.2-41.1), more than 15 years: OR of 21.4 (95 % CI 2.6-173.6). The risk of developing dysplasia (low-grade intraepithelial neoplasia, LGIEN and high-grade intraepithelial neoplasia, HGIEN) or the need to undergo colectomy was also significantly related to disease duration (P = 0.006, P = 0.002, respectively). Established anti-inflammatory medication (e.g., 5-ASA, anti-TNF-α) significantly reduced the risk of both dysplasia and CAC (P = 0.02). CONCLUSIONS: Despite the use of modern therapies for UC, CAC rates remain high. In our study, risk factors included disease duration while anti-inflammatory therapies reduced the risk. Effective control of the intestinal inflammation also reduced the disease burden as indicated by decreased risk of requiring colectomy, underscoring the need for sufficient surveillance and anti-inflammatory therapies.


Assuntos
Colite Ulcerativa/complicações , Neoplasias Colorretais/etiologia , Adulto , Idoso , Anti-Inflamatórios/uso terapêutico , Colectomia , Colite Ulcerativa/diagnóstico , Colite Ulcerativa/terapia , Neoplasias Colorretais/diagnóstico , Neoplasias Colorretais/prevenção & controle , Progressão da Doença , Feminino , Fármacos Gastrointestinais/uso terapêutico , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Razão de Chances , Fatores de Proteção , Estudos Retrospectivos , Fatores de Risco , Centros de Atenção Terciária , Fatores de Tempo , Resultado do Tratamento
8.
J Med Case Rep ; 8: 356, 2014 Oct 28.
Artigo em Inglês | MEDLINE | ID: mdl-25348576

RESUMO

INTRODUCTION: This case of giant cell arteritis is noteworthy because it evaded standard diagnostic criteria and only emerged as fever of unknown origin. In this regard, we present 18F-fluorodeoxyglucose positron emission tomography as a valid diagnostic method. CASE PRESENTATION: This case report describes a 58-year-old Caucasian woman who is a cigarette smoker with a 10-week history of fever of unknown origin, night sweats and weight loss of 12 kg. Initially, clinical presentation was suspicious of malignant disease. Laboratory findings detected significantly elevated inflammatory blood parameters including C-reactive protein and elevated erythrocyte sedimentation rate (110 mm/hour). Extensive diagnostic workup including microbiological and rheumatological assessment, ultrasonography, endoscopy and computed tomography of abdomen and thorax did not indicate any septic or malignant focus. Eventually, 18F-fluorodeoxyglucose positron emission tomography was able to reveal arteritis of her aortic arch and supraaortic branches. Subsequently, she commenced steroid and methotrexate therapy that led to sustained remission. CONCLUSIONS: This case of giant cell arteritis may promote discussion regarding a more specific classification for this disease entity. Furthermore, it confirms that 18F-fluorodeoxyglucose positron emission tomography might serve as a valuable tool for diagnosis of giant cell arteritis, because it could facilitate an accurate and non-invasive detection of lesions of large vessels.


Assuntos
Arterite de Células Gigantes/diagnóstico por imagem , Feminino , Fluordesoxiglucose F18 , Humanos , Pessoa de Meia-Idade , Tomografia por Emissão de Pósitrons , Tomografia Computadorizada por Raios X , Imagem Corporal Total/métodos
9.
Endoscopy ; 46(7): 610-4, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24824090

RESUMO

BACKGROUND AND STUDY AIMS: The Endocuff is a new colonoscopy accessory that has been designed to improve both the adenoma detection rate and endoscope tip control. PATIENTS AND METHODS: A total of 50 Endocuff-assisted colonoscopies were analyzed retrospectively with regard to safety, procedural success, and complications. RESULTS: The cecal intubation rate was 98 %, and the mean intubation time was 6.0 minutes (95 % confidence interval 5.3 - 6.6 minutes). The ileal intubation rate was 76 %. In 30 % of patients, the Endocuff caused small, superficial, "scratch-like" mucosal lesions. In all other patients, no Endocuff-associated complications were observed. A total of 36 adenomas were detected in 50 patients. The adenoma detection rate was 34 %. CONCLUSIONS: Endocuff-assisted colonoscopy showed good procedural success rates in terms of cecal intubation rate and time, and a promising adenoma detection rate. Endocuff seems to improve endoscope tip control, especially during polypectomy. Endocuff may be a useful device for colorectal adenoma screening, and should be investigated in larger trials.


Assuntos
Adenoma/diagnóstico , Neoplasias do Colo/diagnóstico , Colonoscopia/instrumentação , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Ceco , Colonoscópios , Feminino , Humanos , Intubação Gastrointestinal/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Avaliação de Resultados em Cuidados de Saúde , Estudos Retrospectivos , Adulto Jovem
10.
Mol Nutr Food Res ; 58(7): 1474-90, 2014 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-24764203

RESUMO

SCOPE: In previous studies, we could show that the B vitamin nicotinamide (NAM) enhanced antimicrobial activity of neutrophils. Here, we assessed the effects of NAM in two models of experimental colitis. METHODS AND RESULTS: Colitis was induced in C57BL/6 mice either by oral infection with Citrobacter rodentium or by DSS (dextran sodium sulphate) administration, and animals were systemically treated with NAM. Ex vivo bacterial clearance was assessed in murine and human whole blood, as well as isolated human neutrophils. In C. rodentium-induced colitis, NAM treatment resulted in markedly decreased systemic bacterial invasion, histological damage and increased fecal clearance of C. rodentium by up to 600-fold. In contrast, NAM had no effect when administered to neutrophil-depleted mice. Ex vivo stimulation of isolated human neutrophils, as well as murine and human whole blood with NAM led to increased clearance of C. rodentium and enhanced expression of antimicrobial peptides in neutrophils. Moreover, NAM treatment significantly ameliorated the course of DSS colitis, as assessed by body weight, histological damage and myeloperoxidase activity. CONCLUSION: Pharmacological application of NAM mediates beneficial effects in bacterial and chemically induced colitis. Future studies are needed to explore the clinical potential of NAM in the context of intestinal bacterial infections and human inflammatory bowel disease (IBD).


Assuntos
Antibacterianos/farmacologia , Colite/tratamento farmacológico , Neutrófilos/efeitos dos fármacos , Niacinamida/farmacologia , Animais , Proteínas Estimuladoras de Ligação a CCAAT/genética , Proteínas Estimuladoras de Ligação a CCAAT/metabolismo , Citrobacter rodentium/efeitos dos fármacos , Colite/induzido quimicamente , Sulfato de Dextrana , Modelos Animais de Doenças , Infecções por Enterobacteriaceae/tratamento farmacológico , Fezes/microbiologia , Feminino , Regulação da Expressão Gênica , Humanos , Intestinos/efeitos dos fármacos , Intestinos/microbiologia , Complexo Antígeno L1 Leucocitário/sangue , Camundongos , Camundongos Endogâmicos C57BL , Viabilidade Microbiana/efeitos dos fármacos , Neutrófilos/metabolismo
11.
BMC Med Educ ; 13: 84, 2013 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-23758796

RESUMO

BACKGROUND: As a non-invasive and readily available diagnostic tool, ultrasound is one of the most important imaging techniques in medicine. Ultrasound is usually trained during residency preferable according to German Society of Ultrasound in Medicine (DEGUM) standards. Our curriculum calls for undergraduate training in ultrasound of medical students in their 4th year of undergraduate education. An explorative pilot study evaluated the acceptance of this teaching method, and compared it to other practical activities in medical education at Muenster University. METHODS: 240 medical students in their 4th year of undergraduate medical education participated in the training and completed a pre- and post-questionnaire for self-assessment of technical knowledge, self-assurance of the procedure, and motivation in performing ultrasound using a Likert scale. Moreover, students were asked about their interest in pursuing a career in internal medicine. To compare this training to other educational activities a standardized online evaluation tool was used. A direct observation of procedural skills assessment (DOPS) for the first time applied on ultrasound aimed to independently assess the success of our teaching method. RESULTS: There was a significant increase in technical knowledge and self-assurance (p < 0.001) of the students' self-assessments. The clinical relevance and self-motivation of the teaching were evaluated positively. The students' DOPS results demonstrated proficiency in the understanding of anatomic structures shown in ultrasonographic images, including terminology, machine settings, and transducer frequencies. CONCLUSIONS: Training ultrasound according to certified DEGUM standards was successful and should be offered in undergraduate medical education. The evaluation of the course affirmed the necessity, quality and clinical relevance of the course with a top ranking score of hands-on training courses within the educational activities of the Medical Faculty of Muenster.


Assuntos
Educação de Graduação em Medicina/métodos , Ultrassonografia , Competência Clínica/normas , Currículo , Avaliação Educacional , Feminino , Alemanha , Humanos , Masculino , Projetos Piloto , Ensino/métodos , Ultrassonografia/normas , Adulto Jovem
12.
Eur J Endocrinol ; 158(6): 811-6, 2008 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-18322301

RESUMO

CONTEXT: For rare and novel RET mutations associated with hereditary medullary thyroid carcinoma (MTC), clinical and functional studies are needed to classify the RET mutation into one of the three clinical risk groups. OBJECTIVE: We analyzed proliferative properties and clinical implications associated with the RET protooncogene transmembrane domain mutation S649L. DESIGN: The transforming potential and mitogenic properties of S649L mutation were investigated clinically and by evaluating kinase activity, cell proliferation, and colony formation. PATIENTS: Fifteen individuals from five kindreds were identified as carriers of a RET protooncogene mutation in exon 11 codon 649 (TCG(Ser)-->TTG(Leu)). In two out of five index patients, a second RET mutation (C634W or V804L) was detected. RESULTS: Eight gene carriers were operated on. Histology revealed MTC and C-cell hyperplasia in three index and three screening patients respectively. In all other gene carriers (aged 41-64 years), calcitonin levels were in the normal range, and pentagastrin-stimulated calcitonin levels were <100 pg/ml. Therefore, thyroidectomy had not yet been performed. In one index patient carrying the S649L mutation, hyperparathyroidism was confirmed histologically. RET S649L-expressing NIH3T3 cells exhibited a clear increase of phosphotyrosine and proliferation rate when compared with parental NIH3T3 cells but a significantly lower kinase activity and cell growth rate when compared with RET C634R-expressing cells. When compared with RET C634R, the S649L mutant showed moderate transforming potential with small-sized colonies. CONCLUSIONS: Our clinical and in vitro findings indicate that the transmembrane RET S649L mutation is associated with late-onset non-aggressive disease. Recommendations for prophylactic thyroidectomy should be individualized depending on stimulated calcitonin levels.


Assuntos
Carcinoma Medular/genética , Mutação , Proteínas Proto-Oncogênicas c-ret/genética , Neoplasias da Glândula Tireoide/genética , Adulto , Substituição de Aminoácidos , Animais , Sítios de Ligação/genética , Carcinoma Medular/patologia , Proliferação de Células , Sobrevivência Celular/genética , Sobrevivência Celular/fisiologia , Feminino , Genótipo , Humanos , Masculino , Camundongos , Pessoa de Meia-Idade , Células NIH 3T3 , Linhagem , Proteínas Proto-Oncogênicas c-ret/metabolismo , Proteínas Proto-Oncogênicas c-ret/fisiologia , Neoplasias da Glândula Tireoide/patologia
13.
Med Sci Monit ; 9(4): MT13-7, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12709678

RESUMO

BACKGROUND: Hashimoto's thyroiditis is associated with a diffuse reduction in thyroid echo levels. The purpose of this study was to determine the degree of hypoechogenicity in correlation to clinical features and laboratory parameters. MATERIAL/METHODS: 52 patients with Hashimoto's thyroiditis under substitutive therapy with levothyroxine (50-200 g daily) and 100 normal euthyroid volunteers (with no features of autoimmune disease who were not taking any thyroid medication) as controls were investigated. Determination of plasma free thyroxine (FT4) and TSH as well as peroxidase- (TPO), thyroglobulin- and TSH receptor (TSH-R) antibodies were performed. Thyroid volume was measured by conventional ultrasonography. Tissue echogenicity was characterized by standardized grey scale ultrasonography under defined operating conditions. Mean densities were given in a histogram range of grey scales between 0-63 GWE (= Grauwerteinheiten). RESULTS: Patients with Hashimoto's thyroiditis revealed significantly lower echo levels (19.6+/-2.6 GWE) than controls (25.6+/-2.0 GWE, p<0.001). High graded hypoechogenicity was associated with large goiters, persistently increased TSH levels (subclinical hypothyroidism) and highly elevated TPO-antibodies. CONCLUSIONS: Standardized grey scale ultrasonography allows for reproducable correlations between functional status and morphological characteristics of the thyroid gland in Hashimoto's thyroiditis. The results hint at a stronger inflammatory process in higher grades of hypoechogenicity.


Assuntos
Hipotireoidismo/patologia , Tireoidite Autoimune/diagnóstico por imagem , Ultrassonografia/métodos , Adulto , Idoso , Anticorpos/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Peroxidase/sangue , Receptores da Tireotropina/sangue , Tireoglobulina/sangue , Tireoidite Autoimune/diagnóstico , Tireoidite Autoimune/tratamento farmacológico , Tireotropina/sangue , Tiroxina/sangue , Tiroxina/uso terapêutico
14.
World J Surg ; 26(10): 1286-90, 2002 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12205548

RESUMO

Prophylactic thyroidectomy is recommended for carriers of RET protooncogene mutations owing to their nearly complete penetrance for medullary thyroid carcinoma (MTC). However, this guideline is challenged by mutations exhibiting variable penetrance of C-cell pathology. A 38-year-old woman presented with pathologic basal and pentagastrin-stimulated calcitonin levels. Genetic analysis revealed a heterozygous RET protooncogene germline mutation in codon 791 (exon 13) (TAT(Tyr)-->TTT(Phe)), followed by thyroidectomy and systematic central lymph node dissection. Histology showed C-cell hyperplasia (CCH) only. Three additional carriers were identified among family members. The 71-year-old father refused surgery despite pathologic calcitonin levels. The index patient's 37-year-old sister had normal basal and stimulated calcitonin levels, and her 6-year-old son had a 10-fold rise of calcitonin after pentagastrin stimulation. Both patients underwent the same operation as the index patient. The sister had 25 hyperplastic C-cells, but the her son had extensive CCH without MTC. The eldest uncle of the index patient had died of metastatic MTC at the age of 52 with unknown carrier status. Despite variable penetrance, each carrier of a RET protooncogene germline mutation should undergo thyroidectomy, even if basal and stimulated calcitonin levels are normal because at present no test can exclude or predict the age of development of MTC. Moreover, pathologic calcitonin levels cannot differentiate between CCH and MTC. Central lymph node dissection is recommended, as lymph node metastases occur early, significantly worsening the prognosis.


Assuntos
Carcinoma Medular/genética , Carcinoma Medular/prevenção & controle , Proteínas de Drosophila , Neoplasia Endócrina Múltipla/genética , Proteínas Proto-Oncogênicas/genética , Receptores Proteína Tirosina Quinases/genética , Neoplasias da Glândula Tireoide/genética , Neoplasias da Glândula Tireoide/prevenção & controle , Tireoidectomia , Adulto , Calcitonina/sangue , Carcinoma Medular/cirurgia , Feminino , Mutação em Linhagem Germinativa , Humanos , Excisão de Linfonodo , Linhagem , Penetrância , Proteínas Proto-Oncogênicas c-ret , Neoplasias da Glândula Tireoide/cirurgia
15.
J Affect Disord ; 70(1): 85-90, 2002 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-12113923

RESUMO

BACKGROUND: Lithium is known to induce subclinical or overt hypothyroidism and changes of thyroid volume in manic-depressive patients. Little is known about alterations of thyroid echogenicity due to drug-induced dysfunction. METHODS: Twenty manic-depressive patients receiving lithium therapy for at least 6 months and 20 euthyroid volunteers without any antidepressive medication as control group, matched in age and gender, were investigated by laboratory measurements and thyroid ultrasonography including standardized grey scale analyses in representative regions of interest (ROI). RESULTS: Thyroid function was normal in all patients (mean FT4 1.1+/-0.2 ng/dl, mean TSH 1.6+/-0.9 micro U/ml) and controls (mean FT4 1.5+/-0.4 ng/dl, TSH 1.1+/-0.3 micro U/ml). Except for two patients, no thyroid autoantibody levels could been detected. Thyroid volumetry revealed significant higher mean values for the lithium treated patients (16.9+/-11.9 ml) compared with the controls (11.4+/-4.5 ml, P<0.05) with a considerable number of goiters (six patients vs. one control). Thyroid echogenicities in both groups were similar (patients 23.9+/-3.7 grey scales, Grauwerteinheiten = GWE, controls 24.2+/-1.3 GWE) and did not depend on the size of the organs. CONCLUSION: Lithium treatment contributes to increased thyroid volumes, probably due to inhibition of thyroid function and TSH upregulation, but not to changes of thyroid echo levels in patients with still euthyroid function. Further echogenicity studies on patients with lithium-induced overt hypothyroidism and autoimmune activity will be of special interest.


Assuntos
Antidepressivos/uso terapêutico , Transtorno Bipolar/tratamento farmacológico , Carbonato de Lítio/uso terapêutico , Glândula Tireoide/efeitos dos fármacos , Adulto , Idoso , Antidepressivos/efeitos adversos , Transtorno Bipolar/diagnóstico por imagem , Feminino , Humanos , Carbonato de Lítio/efeitos adversos , Masculino , Pessoa de Meia-Idade , Testes de Função Tireóidea , Glândula Tireoide/diagnóstico por imagem , Ultrassonografia
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