Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 59
Filtrar
Mais filtros

País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Clin Endocrinol (Oxf) ; 98(5): 662-669, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36514987

RESUMO

OBJECTIVE: Although there is growing evidence associating nonfunctioning adrenal incidentalomas (NFAI) with cardiovascular risk factors, there are limited data whether NFAI and autonomous cortisol secretion (ACS) groups have similar or different clinical and metabolic features. The aim of this study is to compare cardiometabolic clinic parameters among patients with ACS and NFAI, as well as controls. DESIGN: Cross-sectional study. PATIENTS: Eighty nine NFAI, 58 ACS and 64 controls were evaluated. MEASUREMENTS: Diagnosis of NFAI (1 mg dexamethasone suppression test [1 mg-DST] ≤50 nmol/L [≤1.8 µg/dl]) and ACS (1 mg-DST > 50 nmol/L [> 1.8 µg/dl]) was established according to current guidelines. The control group was selected based on a normal adrenal imaging exam. RESULTS: There were no differences between groups regarding age, gender, ethnicity, menopause or body mass index. Patients with adrenal incidentaloma presented higher frequency of hypertension (74.1 vs. 57.8%; p = .02), resistant hypertension (45.4 vs. 9.4%; p < .001), dyslipidemia (80.1 vs. 63.9%; p = .01), as well as metabolic syndrome (84.2 vs. 61.7%; p = .001) compared to the controls, respectively. NFAI and ACS patients presented similar frequency of arterial hypertension (70.8 vs. 79.3%) and resistant hypertension (41.3 vs. 51.1%), dyslipidemia (79.3 vs. 81.5%) and metabolic syndrome (83.3 vs. 85.7%); also, levels of HbA1c were similar between the groups. Binary logistic regression showed that NFAI (p = .004) and ACS (p = .001) were independent predictors for resistant hypertension (p = .003); also, ACS was an independent predictor for metabolic syndrome (p = .04). CONCLUSIONS: NFAI and ACS presented a higher frequency of cardiometabolic morbidities in comparison with individuals with normal adrenal glands. Additionally, we demonstrated that both ACS and NFAI groups have similar cardiometabolic conditions.


Assuntos
Neoplasias das Glândulas Suprarrenais , Hipertensão , Síndrome Metabólica , Feminino , Humanos , Síndrome Metabólica/etiologia , Neoplasias das Glândulas Suprarrenais/complicações , Hidrocortisona/metabolismo , Estudos Transversais , Hipertensão/complicações
2.
Clin Endocrinol (Oxf) ; 89(5): 586-595, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30044007

RESUMO

CONTEXT: Although metabolic syndrome has been studied in patients with autonomous cortisol secretion, there are limited data for those with nonfunctioning adrenal incidentaloma (NFAI). OBJECTIVE: To assess metabolic syndrome frequency in NFAI patients and controls without adrenal adenoma according to World Health Organization (WHO), National Cholesterol Education Program-Adult Treatment Panel III (NCEP-ATP III), American Association of Clinical Endocrinologists/American College of Endocrinology (AACE/ACE) and International Diabetes Federation (IDF) criteria. DESIGN: Retrospective and transversal study. PATIENTS: Seventy-four NFAI and 90 controls were evaluated. NFAI diagnosis was established according to current guidelines. The control group was selected based on normal adrenal imaging examinations. MEASUREMENTS: Subjects were categorized by metabolic syndrome presence according to WHO, NCEP-ATP III, AACE/ACE and IDF. RESULTS: Age, gender, ethnicity, body mass index, smoking, menopause, statin and fibrate use were comparable between patients and controls. The frequency of prediabetes, dyslipidaemia and hypertension as well as waist circumference were significantly higher in the NFAI patients compared to the controls. The metabolic syndrome frequency in the NFAI group was significantly higher compared to the normal adrenal group: WHO: 69.2% × 31.0% (P < 0.001); NCEP-ATP III: 81.7% × 44.9% (P < 0.001); AACE/ACE: 77.1% × 31.9% (P < 0.001); IDF: 78.6% × 45.5% (P < 0.001). Logistic regression analysis showed that NFAI was a predictor of metabolic syndrome according to WHO (P = 0.001), NCEP-ATP III (P = 0.005) and AACE/ACE (P = 0.007). CONCLUSIONS: Metabolic syndrome is frequently found in patients with NFAI, and this frequency is higher in NFAI patients than in those with normal adrenal imaging.


Assuntos
Neoplasias das Glândulas Suprarrenais/epidemiologia , Síndrome Metabólica/epidemiologia , Neoplasias das Glândulas Suprarrenais/complicações , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino , Síndrome Metabólica/etiologia , Estudos Retrospectivos , Fatores de Risco
3.
Clin Nephrol ; 89 (2018)(1): 10-17, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29189197

RESUMO

INTRODUCTION: Factors associated with osteodystrophy in predialysis patients are poorly understood. In the present study, we attempted to evaluate the impact of body composition and hormonal regulatory factors on the bone microstructure in a group of men with chronic kidney disease (CKD) stages 3 and 4. MATERIALS AND METHODS: 46 men, aged 50 - 75 years, with previously unrecognized CKD were evaluated by high-resolution peripheral quantitative computed tomography (HR-pQCT), and dual-energy X-ray absorptiometry (DXA). HR-pQCT parameters were correlated with estimated glomerular filtration rate (eGFR), age, body mass index (BMI), muscle mass index (MMI), and biochemistry. RESULTS: As compared to patients in stage 3 CKD, those with stage 4 CKD showed lower serum 25-hydroxyvitamin D (25(OH)D) and bicarbonate levels, and higher serum fibroblast growth factor 23 (FGF-23) and parathyroid hormone (PTH) levels. They also exhibited lower total, trabecular, and cortical volumetric bone mineral density, lower trabecular bone volume/tissue volume, trabecular number, trabecular and cortical thickness, and increased heterogeneity of the trabecular network. In the whole cohort, cortical bone density and thickness were negatively associated with age, PTH, and FGF-23, and positively with BMI. Trabecular bone parameters were positively associated with MMI and 25(OH)D. After simultaneously adjusting for age and eGFR, BMI, and MMI remained significantly associated with bone microstructural variables. CONCLUSION: HR-pQCT showed significant differences in bone microstructure in stage 4 vs. stage 3 CKD patients. Increased BMI, probably due to increased muscle mass, may favorably affect bone architecture in predialysis CKD patients.
.


Assuntos
Composição Corporal/fisiologia , Osso e Ossos/diagnóstico por imagem , Fatores de Crescimento de Fibroblastos/sangue , Hormônio Paratireóideo/sangue , Insuficiência Renal Crônica , Tomografia Computadorizada por Raios X , Idoso , Densidade Óssea , Estudos de Coortes , Fator de Crescimento de Fibroblastos 23 , Humanos , Masculino , Pessoa de Meia-Idade , Insuficiência Renal Crônica/diagnóstico por imagem , Insuficiência Renal Crônica/metabolismo , Insuficiência Renal Crônica/fisiopatologia
4.
J Bone Miner Metab ; 34(4): 417-21, 2016 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26056020

RESUMO

Bone mineral density (BMD) seems not to be decreased in young patients given long-term suppressive doses of levothyroxine (LT4), but information regarding the bone microstructure in these patients is lacking. The aim of this study was to determine whether supraphysiologic doses of LT4, initiated during childhood or adolescence for treatment of differentiated thyroid carcinoma (DTC), have any detrimental effects on bone microarchitecture as evaluated by high-resolution peripheral quantitative computed tomography (HR-pQCT). Seventeen patients (27.3 ± 7.1 years old) with DTC with subclinical hyperthyroidism since adolescence and 34 healthy volunteers matched for age, sex, and body mass index were studied by dual-energy X-ray absorptiometry (DXA) to determine the areal BMD at the lumbar spine, hip, and proximal third of the radius. Volumetric BMD and structural parameters of the trabecular and cortical bone were assessed by HR-pQCT of the distal radius and distal tibia. DTC patients were given suppressive doses of LT4 starting at a mean age of 12.6 years, and the mean duration of treatment was 14.2 years. In DTC patients, clinical parameters did not correlate with DXA or HR-pQCT parameters. No differences were found between the patients and controls with respect to BMD and Z scores at any site evaluated by DXA, and no differences were found in the bone microstructure parameters evaluated by HR-pQCT. This cross-sectional study suggests that long-standing suppressive therapy with LT4 during the attainment of peak bone mass may have no significant adverse effects on bone density or microarchitecture.


Assuntos
Densidade Óssea/efeitos dos fármacos , Rádio (Anatomia)/metabolismo , Neoplasias da Glândula Tireoide/tratamento farmacológico , Tiroxina/administração & dosagem , Adolescente , Adulto , Brasil , Estudos Transversais , Humanos , Pessoa de Meia-Idade , Rádio (Anatomia)/patologia , Neoplasias da Glândula Tireoide/metabolismo , Neoplasias da Glândula Tireoide/patologia , Tiroxina/efeitos adversos , Adulto Jovem
5.
Clin Endocrinol (Oxf) ; 82(5): 739-46, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25418156

RESUMO

OBJECTIVES: To determine the dopamine receptor subtype 2 (DR2) mRNA levels and protein expression and to evaluate the effect of adjuvant cabergoline therapy on tumour volume (TV) in patients with postoperative residual nonfunctioning pituitary adenoma (NFPA). METHODS: The mRNA expression was quantified by real-time RT-PCR (TaqMan(®)), and protein expression was evaluated by immunohistochemistry. Tumours were classified according to the percentage of immunostained cells for DR2 as scores 1 (<50% of stained cells) or 2 (≥50%). Cabergoline was started at least 6 months after surgery in nine patients with residual tumours (3 mg/week). The cabergoline effect was prospectively evaluated by magnetic resonance imaging using three-dimensional volume calculation. TV reduction >25% was considered significant. RESULTS: The DR2 mRNA expression was variable but was observed in 100% of the samples (N = 20). DR2 protein expression was also observed in all the tumours (N = 34). Twenty-nine tumours (85%) were classified as score 2. The median DR2 mRNA expression was higher in the tumours classified as score 2 compared with score 1 (P = 0·007). TV reduction with cabergoline therapy was observed in 67% of the patients (6/9). The median TV before and after 6 months of treatment was 1·90 cm(3) (0·61-8·74) and 1·69 cm(3) (0·36-4·20) [P = 0·02], respectively. CONCLUSION: In conclusion, DR2 is expressed in all adenomas and the majority of the patients in this study displayed tumour shrinkage on cabergoline (CAB) therapy. Thus, CAB might be useful in adjuvant therapy in NFPA patients with residual tumours after surgery.


Assuntos
Adenoma/tratamento farmacológico , Adenoma/metabolismo , Ergolinas/uso terapêutico , Neoplasias Hipofisárias/tratamento farmacológico , Neoplasias Hipofisárias/metabolismo , Receptores de Dopamina D2/metabolismo , Adulto , Idoso , Antineoplásicos/uso terapêutico , Cabergolina , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Antígeno Ki-67/metabolismo , Imageamento por Ressonância Magnética , Masculino , Pessoa de Meia-Idade , Hipófise/metabolismo , RNA Mensageiro/metabolismo , Resultado do Tratamento
6.
Clin Endocrinol (Oxf) ; 83(4): 468-74, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25940452

RESUMO

OBJECTIVE: Osteoporosis is a serious and underestimated complication of endogenous hypercortisolism that results in an increased risk of fractures, even in patients with normal or slightly decreased bone mineral density (BMD). Alterations in bone microarchitecture, a very important component of bone quality, may explain bone fragility. The aim of this study was to investigate bone density and microarchitecture in a cohort of patients with endogenous Cushing's syndrome (CS). DESIGN: Cross-sectional study. PATIENTS: Thirty patients with endogenous active CS and fifty-one age-, sex- and body mass index-matched controls were included. MEASUREMENTS: Participants were studied for areal BMD (dual-energy X-ray absorptiometry) of the lumbar spine (LS), femoral neck (FN), total femur (TF) and radius (33%), and for volumetric bone density (vBMD) and structure using high-resolution peripheral quantitative computed tomography (HR-pQCT) of the distal radius and distal tibia. RESULTS: Patients with active CS exhibited lower areal BMD and Z-score values in the LS, FN and TF (P < 0·003 for all comparisons). At HR-pQCT, the patients with CS also had lower cortical area (P = 0·009 at the radius and P = 0·002 at the tibia), lower cortical thickness (P = 0·02 at the radius and P = 0·002 at the tibia), lower cortical density (P = 0·008 at the tibia) and lower total vBMD (P = 0·002 at the tibia). After the exclusion of hypogonadal individuals, the patients with CS maintained the same microarchitectural and densitometric alterations described above. CONCLUSIONS: Endogenous hypercortisolism has deleterious effects on bone, especially on cortical bone microstructure. These effects seem to be a more important determinant of bone impairment than gonadal status.


Assuntos
Densidade Óssea/fisiologia , Síndrome de Cushing/metabolismo , Absorciometria de Fóton , Adolescente , Adulto , Idoso , Estudos Transversais , Síndrome de Cushing/complicações , Feminino , Colo do Fêmur/metabolismo , Colo do Fêmur/patologia , Fraturas Ósseas/metabolismo , Fraturas Ósseas/patologia , Humanos , Vértebras Lombares/metabolismo , Vértebras Lombares/patologia , Masculino , Pessoa de Meia-Idade , Osteoporose/etiologia , Osteoporose/metabolismo , Rádio (Anatomia)/metabolismo , Rádio (Anatomia)/patologia , Adulto Jovem
7.
Clin Endocrinol (Oxf) ; 80(1): 1-12, 2014 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-24118077

RESUMO

OBJECTIVE: Reported rates of response to medical therapies used in Cushing's disease (CD) vary widely. The aim of this review is to analyse systematically the efficacy of medical therapies for CD and to assess the strength of the supporting evidence. METHODS: Systematic PubMed searches identified studies of medical treatment in CD. The GRADE criteria were imposed to assess the strength of evidence supporting each medication. RESULTS: Fifteen studies were included. Ten studies specifically reported response rates for patients with CD. Pasireotide was the only treatment to be assessed in a randomized trial and was supported by a 'moderate' level of evidence. Response rates with pasireotide from three prospective studies were 17-29%. The remaining medications were supported by a 'low' or 'very low' level of evidence. The highest response rates were reported in small retrospective studies of metyrapone (75%, one study) and mitotane (72%, one study). Response rates were 25-50% for cabergoline (four studies) and 45% for ketoconazole (one study). Among studies that included patients with other forms of Cushing's syndrome, response rates were 53-88% for ketoconazole (three studies), 70% for mitotane (one study), 57% for metyrapone (one study) and 38-60% for mifepristone. Again, all of these medications are supported by a 'low' level of evidence. CONCLUSIONS: There is a paucity of high-quality studies of medical therapy in CD, with only one medication achieving a 'moderate' level of evidence. Caution should be employed when comparing efficacy rates owing to the variability in study design and quality.


Assuntos
Hipersecreção Hipofisária de ACTH/tratamento farmacológico , Cabergolina , Ergolinas/uso terapêutico , Feminino , Humanos , Cetoconazol/uso terapêutico , Masculino , Metirapona/uso terapêutico , Mitotano/uso terapêutico , Hipersecreção Hipofisária de ACTH/patologia , Somatostatina/análogos & derivados , Somatostatina/uso terapêutico
8.
Clin Endocrinol (Oxf) ; 81(5): 657-64, 2014 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24815846

RESUMO

INTRODUCTION: Rotation thromboelastometry (ROTEM®) can be used for hypercoagulability evaluation. Cushing's syndrome (CS) is associated with hypercoagulability; however, ROTEM® has never been evaluated in this setting. OBJECTIVE: To evaluate hypercoagulability in CS using ROTEM® and to correlate these parameters with coagulation markers and with the presence of deep vein thrombosis. DESIGN AND METHODS: Thirty patients with active CS (26 women) and 30 controls matched for age, sex, body mass index, diabetes mellitus, arterial hypertension, ABO blood group and smoking were included. We measured levels of activated partial thromboplastin time (aPTT), platelets, fibrinogen, D-dimer, factor VIII (FVIII), von Willebrand factor (vWF) and C-reactive protein. ROTEM® was used to evaluate the intrinsic (INTEM), extrinsic (EXTEM) and fibrinogen (FIBTEM) pathways. Doppler ultrasonography was performed to search for lower limbs deep vein thrombosis. RESULTS: INTEM clotting time using ROTEM® was shorter in patients than in controls (P = 0·04). Other ROTEM® parameters were not different. Mean aPTT was shorter in patients than in controls (P = 0·001). The FVIII, vWF and D-dimer levels were higher in patients than in controls (P = 0·001, 0·001 and 0·02, respectively). Obese CS patients presented higher levels of platelets and alterations in maximum clot formation (MCF), alpha angle and maximum speed of clot formation of INTEM (P = 0·03, 0·02 and 0·02, respectively) and an increase in the MCF of FIBTEM (P = 0·02). No deep vein thrombosis was found. CONCLUSIONS: Although FVIII and vWF were abnormal in CS patients, only the initiation clot formation was different in the ROTEM® methodology and no deep vein thrombosis was found.


Assuntos
Coagulação Sanguínea , Síndrome de Cushing/sangue , Síndrome de Cushing/complicações , Tromboelastografia/métodos , Trombofilia/sangue , Trombofilia/complicações , Adulto , Estudos de Casos e Controles , Feminino , Hemostasia , Humanos , Masculino , Pessoa de Meia-Idade , Rotação
9.
Pituitary ; 17(5): 441-9, 2014 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-24068456

RESUMO

OBJECTIVES: Obesity is the main risk factor for the development of obstructive sleep apnea (OSA). Hyperprolactinemia has also been related to obesity. To determine the OSA prevalence in patients with prolactinoma before and after dopamine agonist (DA) and to evaluate the correlation between the apnea-hypopnea index (AHI) and prolactin levels, body mass index (BMI), waist circumference (WC), visceral fat volume (VFV), subcutaneous fat volume, and other metabolic parameters. METHODS: Thirty-five patients with prolactinoma at baseline and twenty-one who completed the 6-month DA treatment were submitted to clinical/laboratorial evaluations, polysomnography and abdominal imaging. RESULTS: Before treatment, the prevalence of obesity/overweight and OSA were, respectively, 68.5 and 34.2 %. We found a positive correlation between AHI and weight (r = 0.57; p < 0.001), BMI (r = 0.56; p < 0.001), WC (r = 0.61; p < 0.001), VFV (r = 0.55; p = 0.002), insulin levels (r = 0.57; p < 0.001), and HOMA-IR index (r = 0.57; p < 0.001); and a negative correlation between AHI and HDL-cholesterol (r = -0.47; p = 0.005). After multivariate analysis, VFV and insulin levels were the most important predictors for AHI (p = 0.001 and p = 0.02, respectively). After DA, the obesity/overweight and OSA prevalence did not change. CONCLUSIONS: The OSA prevalence in patients with prolactinoma is similar to the obese subjects and did not change after treatment. Higher BMI and visceral obesity, but not prolactin levels, seem to be the major factor involved in the occurrence of OSA in these patients.


Assuntos
Agonistas de Dopamina/uso terapêutico , Prolactinoma/tratamento farmacológico , Prolactinoma/epidemiologia , Apneia Obstrutiva do Sono/tratamento farmacológico , Apneia Obstrutiva do Sono/epidemiologia , Adulto , Idoso , Índice de Massa Corporal , Agonistas de Dopamina/farmacologia , Feminino , Humanos , Hiperprolactinemia/tratamento farmacológico , Hiperprolactinemia/epidemiologia , Masculino , Pessoa de Meia-Idade , Prolactina/sangue , Prolactinoma/sangue , Prolactinoma/complicações , Apneia Obstrutiva do Sono/sangue , Apneia Obstrutiva do Sono/complicações , Circunferência da Cintura/efeitos dos fármacos , Adulto Jovem
10.
Arch Endocrinol Metab ; 68: e230181, 2024 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-38788146

RESUMO

Hemangioblastomas associated with von Hippel-Lindau (VHL) disease are frequently multiple and recur during prolonged follow-up. Currently, no systemic treatment is available for these tumors. Recent studies have shown the expression of somatostatin receptors in these types of hemangioblastomas. Notably, increased somatostatin receptor expression in a tumor, as determined by peptide-receptor radionuclide imaging, is a predictive factor of response to treatment with somatostatin analogs and peptide-receptor radionuclide therapy. The aim of this study was to describe the case of a patient with increased expression of somatostatin receptors in a suprasellar hemangioblastoma associated with VHL disease and conduct a literature review on somatostatin receptor expression in patients with VHL-associated hemangioblastomas. We describe herein the case of a 51-year-old man with VHL disease who had a suprasellar hemangioblastoma detected on magnetic resonance imaging. Peptide-receptor radionuclide imaging using gallium-68-DOTATOC (68Ga-DOTATOC) identified increased expression of somatostatin receptors in the suprasellar hemangioblastoma, along with multiple pancreatic neuroendocrine tumors and bilateral pheochromocytomas. The patient was treated for 1 year with lanreotide, a somatostatin analog. A repeat 68Ga-DOTATOC 1 year after starting lanreotide revealed decreased radiotracer uptake by the hemangioblastoma, consistent with a metabolic response. The presence of somatostatin receptors in hemangioblastomas associated with VHL disease is a novel finding. The decreased expression of these receptors after treatment with a somatostatin analog, as described in the present case, positions the somatostatin receptor as a new target for novel diagnostic, therapeutic, and follow-up opportunities in patients with VHL disease.


Assuntos
Hemangioblastoma , Receptores de Somatostatina , Doença de von Hippel-Lindau , Humanos , Hemangioblastoma/diagnóstico por imagem , Doença de von Hippel-Lindau/complicações , Receptores de Somatostatina/análise , Receptores de Somatostatina/metabolismo , Masculino , Pessoa de Meia-Idade , Octreotida/uso terapêutico , Octreotida/análogos & derivados , Neoplasias Cerebelares/diagnóstico por imagem , Neoplasias Cerebelares/tratamento farmacológico , Seguimentos , Imageamento por Ressonância Magnética , Compostos Radiofarmacêuticos/uso terapêutico
11.
Clin Endocrinol (Oxf) ; 79(4): 447-56, 2013 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-23662975

RESUMO

BACKGROUND: Giant prolactinomas are an unusual subset of macroprolactinomas and are more commonly found in men. The goal of this review is to propose a giant prolactinoma definition and discuss the available therapeutic options for biochemical and tumour volume control. METHODS: A comprehensive search of all published studies was performed between April and November 2012 in electronic databases (PubMed and Ovid). RESULTS: A giant prolactinoma should be defined as an adenoma with a maximum diameter of more than 4 cm that is associated with serum prolactin above 5300 mIU/l. Regarding treatment, cabergoline is the preferred dopamine agonist for medical management of giant prolactinomas because of its excellent efficacy and tolerability. Normalization of prolactin level and significant tumour reduction may be achieved in the majority of patients. Combined therapy, particularly cabergoline and surgery, may be necessary due to the large tumour load. Radiotherapy and temozolomide may be used for patients with aggressive giant prolactinomas in whom tumour volume control is not achieved with cabergoline and surgery. CONCLUSION: There is a scarcity of large studies about the management of giant prolactinoma. Cabergoline is the first-line treatment. However, caution should be exercised when comparing efficacy rates among the different treatment modalities due to the variability in study design and data quality. In this scenario, a 'standard' definition for giant prolactinomas and larger series may be helpful to assess the real efficacy and safety of each therapeutic modality.


Assuntos
Neoplasias Hipofisárias/patologia , Neoplasias Hipofisárias/terapia , Prolactinoma/patologia , Prolactinoma/terapia , Cabergolina , Terapia Combinada , Agonistas de Dopamina/uso terapêutico , Ergolinas/uso terapêutico , Humanos , Hipófise/efeitos dos fármacos , Hipófise/efeitos da radiação , Hipófise/cirurgia , Neoplasias Hipofisárias/sangue , Prolactina/sangue , Prolactinoma/sangue , Resultado do Tratamento , Carga Tumoral
12.
Drug Test Anal ; 14(6): 1079-1088, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35092181

RESUMO

The use of androgenic-anabolic steroids (AAS) can be associated with psychiatric symptoms such as insomnia, anxiety and increased aggressiveness. Although dose-dependent effects have been observed in some controlled studies, this association is not always seen in the ecological use of AAS. This study utilized WADA's steroid profile of suspicious use of AAS, urinary detection of AAS metabolites and measurement of sexual hormones to confirm recent use of AAS in a cohort of 103 bodybuilders (75 males, 28 females). The majority of participants (61.2%) presented symptoms of agitation, insomnia, increased aggressiveness or depression in the last 3 months. About one-third of participants presented scores on the HAM-A anxiety scale equivalent to moderate to severe symptoms of anxiety. A minority of participants (12.6%) presented high to moderate scores on the BPQ aggressiveness scale. The majority of participants (73.8%) presented hyperthymic temperament in the BRIEF-TEMPS scale. There was no significant difference in the presence of psychiatric symptoms between males and females and no association between psychiatric symptoms and estimated weekly doses of AAS. A negative association was observed between scores on the BPQ scale (verbal aggression, anger and total score) and the time of AAS use. We discuss differences of AAS use between male and female bodybuilders and the screening of AAS use in the general population. Our findings highlight the importance of mental health awareness among people using AAS.


Assuntos
Anabolizantes , Distúrbios do Início e da Manutenção do Sono , Androgênios , Androstanos , Feminino , Humanos , Masculino , Esteroides , Congêneres da Testosterona
13.
Neuroendocrinology ; 94(1): 39-48, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21178332

RESUMO

BACKGROUND: Some pituitary adenomas exhibit fast growth and invade surrounding structures. To date, there is no robust marker to predict invasiveness. AIM: To evaluate Ki-67, p53 and aryl hydrocarbon receptor-interacting protein (AIP) expression and compare these between invasive and noninvasive somatotropinomas and nonfunctioning pituitary adenomas (NFPAs). METHODS: Protein expression was determined by immunohistochemistry. Tumors were classified according to percentage of immunolabeled nuclei for Ki-67 and p53. AIP immunopositivity was graded according to a score encompassing pattern and intensity. Invasiveness was defined according to radiological and surgical criteria. RESULTS: Thirty-eight sporadic somatotropinomas were studied. Median Ki-67 labeling index in invasive and noninvasive tumors was 1.6 (range 0-20.6) and 0.26 (0-2.2), respectively (p = 0.01). With a 2.3% cut-off point obtained by ROC curve analysis, invasive adenomas were distinguished with 100% specificity, 39% sensitivity, and 63% accuracy. Low AIP expression was also correlated with tumor invasiveness (p = 0.001), with sensitivity, specificity and accuracy of 78, 80, and 79%, respectively. Expression of p53 was not different among tumors. Twenty-nine NFPAs were studied, with no significant difference between Ki-67, p53 and AIP expression in invasive and noninvasive tumors. High AIP expression was more frequent in NFPAs, with Ki-67 >3% (p = 0.051), especially when only gonadotrope cell adenomas (n = 25) were considered (p = 0.012). CONCLUSIONS: These data suggest, for the first time, that AIP is a better marker of invasiveness in somatotropinomas than Ki-67 and p53. In addition, low AIP expression is observed in invasive somatotropinomas, in contrast with high AIP expression in NFPAs (mainly gonadotrope cell tumors) with high proliferative indices.


Assuntos
Adenoma/metabolismo , Biomarcadores Tumorais/metabolismo , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Antígeno Ki-67/metabolismo , Neoplasias Hipofisárias/metabolismo , Proteína Supressora de Tumor p53/metabolismo , Adenoma/diagnóstico , Adenoma/patologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Proliferação de Células , Feminino , Hormônio do Crescimento/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Invasividade Neoplásica , Neoplasias Hipofisárias/diagnóstico , Neoplasias Hipofisárias/patologia , Valor Preditivo dos Testes , Curva ROC , Estudos Retrospectivos , Sensibilidade e Especificidade
14.
Pituitary ; 14(4): 377-81, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19337840

RESUMO

We report a 59-year-old acromegalic woman, who presented with generalized bone pain, weakness, fatigue and foamy urine, who was found to have multiple myeloma (MM); and a 60-year-old acromegalic woman with dizziness, vomiting and abdominal pain, high blood pressure and splenomegaly that was posteriorly diagnosed as having Waldenstrom's macroglobulinemia (WM). Acromegaly is an uncommon disease and epidemiological studies have provided increasingly debated evidence that elevated IGF-I levels might enhance the neoplastic risk, and that cancers constitute the third leading cause of mortality in acromegaly. It is known that GH and IGF-I can activate B cell lymphocytes, and that IGF-I receptor is universally expressed in MM cells. Although the complication of acromegaly with WM or MM in patients has rarely been reported until now, we described two case reports of acromegalic patients with those hematological neoplasias, which allow a discussion about this controversial issue.


Assuntos
Acromegalia/complicações , Neoplasias Hematológicas/complicações , Feminino , Neoplasias Hematológicas/diagnóstico , Humanos , Pessoa de Meia-Idade , Mieloma Múltiplo/complicações , Mieloma Múltiplo/diagnóstico , Macroglobulinemia de Waldenstrom/complicações , Macroglobulinemia de Waldenstrom/diagnóstico
15.
Pituitary ; 14(4): 345-50, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19116786

RESUMO

Germ cell tumors (GCT) are a heterogeneous group of lesions whose origin is not well established. Several cases of primary intrasellar germinomas have been reported, however non-germinomatous GCT have rarely been described. We report the case of a young adult male patient with a mixed GCT that presented with a sellar tumor with suprasellar extension. The patient seeked medical attention because of seizures and magnetic resonance imaging evidenced a tumor of the sellar region. Hyperprolactinemia was also present and dopamine agonist therapy was started. As there was a rapid tumor growth and the patient had concomitant central diabetes insipidus and elevated testosterone levels, a GCT was suspected and confirmed by elevated serum concentration of ß-human chorionic gonadotrophin. Patient underwent surgical resection of the tumor and histopathological examination confirmed the diagnosis of a mixed GCT. Chemotherapy was initiated, followed by conventional radiotherapy. In conclusion, although pituitary adenomas respond for the vast majority of sellar tumors, concomitant symptoms such as central diabetes insipidus and rapid tumor growth should raise the suspicion of a diverse diagnosis. The present report intend not only to show a rare case of sellar and suprasellar mixed GCT but also to remind clinicians that if laboratory findings do not fit into patient's diagnosis (such as high testosterone levels in our patient), then the diagnosis should be reviewed.


Assuntos
Adenoma/diagnóstico , Tumor Misto Maligno/diagnóstico , Neoplasias Embrionárias de Células Germinativas/diagnóstico , Neoplasias Hipofisárias/diagnóstico , Sela Túrcica/patologia , Adenoma/patologia , Adulto , Diagnóstico Diferencial , Humanos , Masculino , Tumor Misto Maligno/patologia , Neoplasias Embrionárias de Células Germinativas/patologia , Neoplasias Hipofisárias/patologia
16.
AME Case Rep ; 5: 36, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34805755

RESUMO

Extra-pulmonary tuberculosis (EPT) is responsible for approximately 14% of all tuberculosis cases in Brazil. The incidence of EPT is increasing slightly and is often associated with human immunodeficiency virus infection and other causes of immunosuppression. The association of EPT and cancer is poorly documented. Here we present a rare case of intestinal subocclusion that was supposed to be caused by cancer and was caused by colonic tuberculosis (CT) in a patient with metastatic neuroendocrine tumor (NET). A 61-year-old woman presented with one-year history of abdominal pain, diarrhea and weight loss. An abdominal CT scan (ACTS) showed liver, peritoneal and lymph nodes metastasis. Colonoscopy revealed a subocclusive lesion in the descendent colon. She underwent an urgent laparoscopy and transverse colostomy. The liver biopsy revealed a well differentiated grade 2 NET and the mycobacterial culture confirmed tuberculosis in the colonic lesion. Anti-tuberculosis was prescribed, and somatostatin analogue therapy was introduced one month later. The tuberculosis treatment was finished, and the patient remained on somatostatin analogue for 21 months. During this time the symptoms of abdominal pain and diarrhea disappeared and her body weight increased 35% over her baseline weight. Then, diarrhea, flushing and abdominal pain returned, and a new ACTS confirmed progressive disease. Interferon was added to her treatment with satisfactory control of symptoms. She was forwarded to another hospital to be treated with 177Lu-DOTATOC. The symptoms improved and the patient remained symptom free for more than a year, and now she has a new disease progression. The patient will be evaluated for retreatment with 177Lu-DOTATOC. Advanced NET may be a devastating disease enough to predispose the patient to EPT. We must keep this hypothesis in the differential diagnosis of our patients since symptoms of CT are usually nonspecific. At colonoscopy, radiological features are strictures, colitis and polypoidal lesions and complications such as bowel perforation or fistula must be in mind. It is particularly important those with advanced disease in endemic areas of tuberculosis.

17.
Drug Test Anal ; 13(1): 197-202, 2021 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-32808487

RESUMO

The treatment of a man who attempted suicide after experiencing symptoms of anxiety and aggressiveness associated with the use of androgenic-anabolic steroids (AAS) is described. This report includes 30 days of inpatient treatment and a 6-month follow-up. Regular use of fluoxetine apparently prevented the onset of anxiety, depression, aggressiveness, and suicide ideation, even with the concurrent use of AAS. The urinary concentration of androgens, metabolites of AAS, and fluoxetine were monitored through analysis of urinary samples by the Brazilian Laboratory of Doping Control. Our results are congruent with previous findings describing the risk of suicide prompted by AAS use as well as the efficacy of fluoxetine in the treatment of mood disorders associated with the use of anabolic steroids.


Assuntos
Agressão/efeitos dos fármacos , Antidepressivos de Segunda Geração/uso terapêutico , Ansiedade/prevenção & controle , Fluoxetina/uso terapêutico , Tentativa de Suicídio/prevenção & controle , Congêneres da Testosterona/efeitos adversos , Adulto , Ansiedade/induzido quimicamente , Depressão/prevenção & controle , Humanos , Masculino , Adulto Jovem
18.
Mol Clin Oncol ; 13(3): 4, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32754318

RESUMO

Gastroenteropancreatic neuroendocrine tumors (GEPNET) are rare tumors that may be sporadic or develop as part of multiple endocrine neoplasia type 1 syndrome (MEN1). The aim of the present study was to report the experience of a Brazilian multidisciplinary outpatient neuroendocrine tumor clinic regarding the clinical diagnosis of MEN1 in a cohort of GEPNET patients. Patient data, including clinical characteristics and the lag time from the onset of symptoms to diagnosis of the first tumor, and further lag time until the diagnosis of MEN1, were retrospectively reviewed. Among 44 GEPNET patients, 6 had a clinical diagnosis of MEN1. Primary hyperparathyroidism and GEPNET were present in all patients in the cohort, and pituitary neuroendocrine tumors were present in 33.3%. The median time interval from the onset of initial symptoms to the diagnosis of the first tumor was 42 months (range, 0-204 months). The median time interval between the diagnosis of the first tumor and the diagnosis of MEN1 was 22 months (range, 1-109 months). The prolonged lag time between the onset of initial symptoms and MEN1 diagnosis may result in substantial morbidity and loss of opportune interventions for the patients. Therefore, greater efforts should be made to shorten these times and improve the care of patients with MEN1.

19.
Braz J Psychiatry ; 42(1): 33-39, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31314867

RESUMO

OBJECTIVE: To evaluate body dissatisfaction and distorted body self-image in women with prolactinoma. METHODS: Body dissatisfaction and distorted body self-image were evaluated in 80 women with prolactinoma. All patients were in menacme, 34% had normal body mass index (BMI), and 66% were overweight. Most patients (56.2%) had normal prolactin (PRL) levels and no hyperprolactinemia symptoms (52.5%). The Body Shape Questionnaire (BSQ) was used to assess the patients' dissatisfaction with and concern about their physical form, and the Stunkard Figure Rating Scale (FRS) was used to assess body dissatisfaction and distorted body self-image. The patients were divided according to PRL level (normal vs. elevated) and the presence or absence of prolactinoma symptoms. RESULTS: The normal and elevated PRL groups had similar incidences of body dissatisfaction and distorted body self-image. However, symptomatic patients reported a higher incidence of dissatisfaction than asymptomatic patients. Distorted body self-image was less common among symptomatic patients. CONCLUSION: Symptomatic patients showed higher body dissatisfaction, but lower body self-image distortion. The presence of symptoms may have been responsible for increased body awareness. The perception of body shape could have triggered feelings of dissatisfaction compared to an ideal lean body. Therefore, a distorted body self-image might not necessarily result in body dissatisfaction in women with prolactinomas.


Assuntos
Transtornos Dismórficos Corporais/psicologia , Hiperprolactinemia/psicologia , Neoplasias Hipofisárias/psicologia , Prolactinoma/psicologia , Adulto , Imagem Corporal/psicologia , Índice de Massa Corporal , Agonistas de Dopamina/uso terapêutico , Feminino , Humanos , Hiperprolactinemia/sangue , Hiperprolactinemia/tratamento farmacológico , Pessoa de Meia-Idade , Neoplasias Hipofisárias/sangue , Prolactina/sangue , Prolactinoma/sangue , Escalas de Graduação Psiquiátrica , Valores de Referência , Estatísticas não Paramétricas , Inquéritos e Questionários , Adulto Jovem
20.
J Clin Endocrinol Metab ; 105(8)2020 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-32413110

RESUMO

CONTEXT: Data regarding high-resolution peripheral quantitative computed tomography (HR-pQCT) in patients with adrenal incidentaloma (AI) are unknown. PURPOSE: To evaluate the areal bone mineral density (aBMD), microstructure, and fractures in patients with nonfunctioning AI (NFAI) and autonomous cortisol secretion (ACS). METHODS: We evaluated 45 patients with NFAI (1 mg dexamethasone suppression test [DST] ≤1.8 µg/dL) and 30 patients with ACS (1 mg DST 1.9-5.0 µg/dL). aBMD was measured using dual-energy X-ray absorptiometry; vertebral fracture by spine X-ray; and bone geometry, volumetric bone mineral density (vBMD), and microstructure by HR-pQCT. RESULTS: Patients with ACS showed lower aBMD values at the spine, femoral neck, and radius 33% than those with NFAI. Osteoporosis was frequent in both groups: NFAI (64.9%) and ACS (75%). Parameters at the distal radius by HR-pQCT were decreased in patients with ACS compared to those with NFAI: trabecular vBMD (Tb.vBMD, P = 0.03), inner zone of the trabecular region (Inn.Tb.vBMD, P = 0.01), the bone volume/tissue volume ratio (BV/TV, P = 0.03) and trabecular thickness (P = 0.04). As consequence, a higher ratio of the outer zone of the trabecular region/inner zone vBMD (Meta/Inn.vBMD, P = 0.003) was observed. A correlation between the cortisol levels after 1 mg DST and Meta/Inn.vBMD ratio was found (r = 0.29; P = 0.01). The fracture frequency was 73.7% in patients with ACS vs 55.6% in patients with NFAI (P = 0.24). CONCLUSION: Our findings point to an association between trabecular bone microarchitectural derangement at the distal radius and ACS. Our data suggest that AI have a negative impact on bone when assessed by HR-pQCT, probably associated to subclinical hypercortisolism.


Assuntos
Neoplasias das Glândulas Suprarrenais/complicações , Osso Esponjoso/patologia , Síndrome de Cushing/diagnóstico , Fraturas Espontâneas/diagnóstico , Processamento de Imagem Assistida por Computador , Fraturas da Coluna Vertebral/diagnóstico , Tomografia Computadorizada por Raios X/métodos , Absorciometria de Fóton , Córtex Suprarrenal/patologia , Neoplasias das Glândulas Suprarrenais/sangue , Neoplasias das Glândulas Suprarrenais/patologia , Adulto , Idoso , Densidade Óssea , Osso Esponjoso/diagnóstico por imagem , Estudos Transversais , Síndrome de Cushing/sangue , Síndrome de Cushing/etiologia , Feminino , Fraturas Espontâneas/etiologia , Fraturas Espontâneas/patologia , Humanos , Hidrocortisona/sangue , Hidrocortisona/metabolismo , Masculino , Pessoa de Meia-Idade , Fraturas da Coluna Vertebral/etiologia , Fraturas da Coluna Vertebral/patologia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA