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1.
Acta Endocrinol (Buchar) ; 19(3): 281-285, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38356972

RESUMO

Objective: This study aimed to evaluate the utility of C-peptide levels in the differentiation of monogenic forms of diabetes from type 1 diabetes mellitus (T1DM) and type 2 diabetes mellitus (T2DM) in clinical practice. Subjects and Methods: A total of 104 patients aged >16 who visited the Dicle University's Faculty of Medicine between April 2011 and December 2020 and were diagnosed with monogenic diabetes by genetic analysis or with T1DM and T2DM were randomly selected for retrospective evaluation. The C-peptide levels of these patients at the time of diagnosis of diabetes were compared. Results: Of the 104 patients, 24 (23%) were diagnosed with maturity-onset diabetes of the young (MODY), 40 (38.5%) with T1DM, and 40 (38.5%) with T2DM. Median C-peptide levels (ng/mL) (interquartile range) were 1.78 (1.24-2.88) in MODY group, 0.86 (0.34-1.22) in T1DM group, and 2.38 (1.58-4.27) in T2DM group. Conclusions: There was a difference in C-peptide levels between MODY and T1DM groups but not between MODY and T2DM groups. As per clinical evaluations, although C-peptide levels of patients with MODY are similar to those of patients with T2DM patients, the possibility of C-peptide levels being similar to those required for T1DM diagnosis should also be considered.

2.
Acta Endocrinol (Buchar) ; 15(4): 539-543, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-32377256

RESUMO

BACKGROUND: Insulin resistance is routinely measured by homeostasis model assessment of insulin resistance (HOMA-IR).Positron emission tomography of 18F-fluorodeoxyglucose combined with computed tomography (18F-FDG PET/CT) is a valuable assessment tool for patients with cancer or staging tumors. 18F-FDG PET/CT imaging can also be utilised to detect the metabolic activity of glucose in the adipose tissue, liver and muscles. The aim of this study was to determine insulin sensitivity in the liver, muscle visceral adipose and subcutaneous adipose tissue separately via18F-FDG PET/CT. MATERIALS AND METHOD: Sixty three adult patients who underwent whole body 18F-FDG PET/CT scanning for clinical purposes (diagnosis or staging of cancer) between July and August of 2016 were included in the study. Patients were divided into two groups according to their BMI (Group 1: BMI<25kg/m2, Group 2: BMI>25kg/m2). HOMA-IR,fasting glucose,insulin, triglycerides, total cholesterol, HDL levels were measured. We calculated SUV as the tissue activity of the ROI (MBq/g)/(injected dose [MBq]/ body weight [g]) on PET images and measured the maximum SUVs (SUVmax) of visceral adipose tissue (VAT) and subcutaneous adipose tissue (SAT),liver and rectus muscle ROIs (2 cm). SUV corrected by blood glucose level (SUVgluc) was calculated as SUVmax×blood glucose level/100. Student-t test, Chi-square test and Pearson correlation test were used for statistical analysis. RESULTS: Mean glucose,insulin,HOMA-IR levels of the group-2 were statistically higher than of group-1. Muscle SUVmax and liver SUVmax of group-1 were statistically higher than of group-2. Muscle SUVgluc of group-1 was statistically higher than of group-2. HOMA-IR was negatively correlated with both SUVmax(r=-0.340, p=0.01) and muscle SUVmax(r=-0.373, p=0.005). CONCLUSION: 18F-FDG PET/CT has shown that the muscle tissue maximum FDG uptake was lower in the insulin resistance group. Therefore, 18-FDG PET/CT could be a valuable tool for diagnosing insulin resistance.

3.
Z Rheumatol ; 76(8): 716-722, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27766418

RESUMO

OBJECTIVE: Growth hormone (GH) and insulin-like growth factor-1 (IGF-1) play a major role in bone homeostasis. In this study, we aimed to assess bone mineral density (BMD) in active acromegaly. MATERIALS AND METHODS: A total of 29 patients with active acromegaly (age 46.10 ± 13.27 years; body mass index [BMI]: 29.51 ± 4.91 kg/m2) and 42 healthy individuals matched for age and BMI (age: 40.35 ± 11.74 years; BMI: 28.18 ± 7.35 kg/m2) were included in the study. BMD was measured by DXA. RESULTS: The mean levels of GH and IGF-1 were found to be 12.61 ± 11.34 ng/ml and 676.47 ± 316.19 ng/ml in acromegaly, respectively, while the mean levels of GH and IGF-1 were found to be 0.59 ± 0.81 ng/ml (p = 0.0001) and 178.17 ± 57.11 ng/ml (p = 0.0001) in the control group, respectively. Only total hip t­score was determined to be significantly lower in acromegaly compared to the control group (p = 0.037). No significant differences were found between the other parameters in DXA and only a positive correlation was found between IGF-1 levels and L1-L4 BMD (r = 0.259, p = 0.029). CONCLUSIONS: Although GH and IGF-1 levels were increased in acromegalic patients, no significant difference was found in terms of vertebral BMD. Only hip t­scores were found to be lower in acromegalic patients, but this low hip t­score did not reach the osteopenic level. The positive correlation between IGF-1 and lumbar vertebral BMD suggested a more prominent effect of IGF-1 on BMD compared to GH.


Assuntos
Acromegalia/sangue , Densidade Óssea/fisiologia , Hormônio do Crescimento Humano/metabolismo , Fator de Crescimento Insulin-Like I/metabolismo , Adulto , Índice de Massa Corporal , Correlação de Dados , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Valores de Referência
4.
Clin Lab ; 59(7-8): 819-25, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24133911

RESUMO

BACKGROUND: Behçet's disease (BD) is a chronic inflammatory vasculitis characterized by endothelial dysfunction, elevated reactive oxygen species (ROS), and neutrophil hyperfunction production including acute attacks and remission periods. Ischemia modified albumin (IMA), advanced oxidation protein products (AOPP), prooxidants-antioxidants balance (PAB), and ferric reducing antioxidant power (FRAP) were evaluated in regard to their role in the pathogenesis of BD as well as their relation to clinical presentation, uveitis attacks and remission periods, and healthy volunteers. METHODS: The study included 28 BD cases and 27 healthy volunteers as the control group. Blood samples were taken twice from each patient; first during an attack and second about three months after an attack, during remission period. RESULTS: AOPP, IMA and PAB levels were significantly increased in active periods of patients with BD compared with healthy control and remission periods of patients with BD (p < 0.0001, p < 0.0001, p < 0.0001, respectively). FRABP levels were found to be lower in active periods of patients with than healthy controls and remission periods of patients with BD (p < 0.001, p < 0.05, respectively). The AOPP levels were negatively correlated with the levels of FRAB in patients (r = -0.468, p = 0.012; r = -0.394, p = 0.038, respectively). The PAB levels were positively correlated with the levels of CRP in patients (r = -0.606, p = 0.001). CONCLUSIONS: Our results show that these parameters play a major role in the inflammatory reactions observed in BD. Increased levels of IMA and PAB are likely to be a result of inflammation-induced oxidative stress and hence its potential significance as a new marker of oxidative stress in BD.


Assuntos
Síndrome de Behçet/metabolismo , Síndrome de Behçet/fisiopatologia , Estudos de Casos e Controles , Estudos Transversais , Humanos , Oxirredução , Estudos Prospectivos , Indução de Remissão
5.
J Endocrinol Invest ; 36(10): 860-3, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23685945

RESUMO

BACKGROUND: The ACE gene has received substantial attention in recent years as candidate for a variety of diseases. The most common polymorphism in ACE gene is the Insertion/Deletion (I/D, rs4646994) polymorphism located on intron 16. AIM: We investigated the association between metabolic syndrome (MS) and the insertion (I) - deletion (D) polymorphisms in the angiotensin converting enzyme (ACE) gene in south-east of Turkey. SUBJECTS AND METHODS: One hundred and sixty subjects, with 101 cases of MS and 59 age- and gender-matched healthy controls were included in the study. RESULTS: The frequency of ACE I/D polymorphism was found to be 49.5% for DD, 36.6% for ID, and 13.9% for II in the MSstudy group and 44.1% for DD, 42.4% for ID and 13.5% for II in the control group. Allele frequencies were found to be 0.68% for D and 0.32% for I allele in the study group with MS and 0.65% for D, 0.35% for I allele in the control group. The I/D polymorphism of the ACE gene, DD, ID, and II genotypes occurred with similar frequencies in the study group with MS and the control group with no significant differences (p<0.05). On applying one-way analysis of variance to different ACE gene polymorphic groups in patients with MS were not significantly associated to ACE gene polymorphism and waist circumference, systolic blood pressure, diastolic blood pressure, fasting blood glucose, HDL, and LDL (p<0.05). CONCLUSIONS: Further studies of patients in larger numbers and of different ethnic backgrounds may be necessary to elucidate the association between the ACE I/D gene polymorphism and MS.


Assuntos
Deleção de Genes , Síndrome Metabólica/genética , Mutagênese Insercional , Peptidil Dipeptidase A/genética , Polimorfismo Genético/genética , Adulto , Estudos de Casos e Controles , DNA/análise , DNA/genética , Feminino , Seguimentos , Predisposição Genética para Doença , Genótipo , Humanos , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da Polimerase , Prognóstico , Turquia
6.
J Endocrinol Invest ; 33(8): 571-5, 2010 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-20930495

RESUMO

INTRODUCTION AND AIM: The mechanisms of acromegalic cardiomyopathy are not clearly understood. Brain natriuretic peptide (BNP) and N-terminal fragment of its pro-hormone (NT-proBNP) are released by the cardiac ventricles and increase in heart failure. In the present study, we aimed to evaluate serum NT-proBNP levels in acromegalic patients and determine a relationship between NT-proBNP levels and echocardiographic parameters. SUBJECTS AND METHODS: Twenty-two newly diagnosed acromegalic patients [mean age 38.85 ± 11.06 yr; body mass index (BMI): 28.51 ± 3.48 kg/m2] and 26 age- and BMI-matched healthy control subjects (mean age 32.9 ± 12.6 yr; BMI: 26.2 ± 5.3 kg/m2) were included in the study. Standard oral glucose tolerance test (OGTT) was performed. Serum NT-proBNP and GH were measured at the beginning of the OGTT (0 min). Body fat analyses were measured by bioelectrical impedance. Echocardiography was used in cardiac evaluations. RESULTS: The mean NT-proBNP level in the acromegalic group was not significantly different from the control subjects (55.89 ± 46.64 pg/ml in acromegaly vs 28.76 ± 22.13 pg/ml in control subjects). There were no correlations between the serum NTproBNP, GH, and IGF-I levels. Echocardiography revealed significantly increased left ventricular end-diastolic diameter (p=0.008), interventricular septum thickness (p=0.009), left atrium (p=0.029), and right ventricle diameter (p=0.027) in the acromegalic group. CONCLUSION: NT-proBNP levels were found to be slightly higher in acromegalic patients as an indicator of heart failure, but the increase was not statistically significant. Although these cardiac structural changes in newly diagnosed acromegalic patients are present, the normal level of NT-proBNP shows that NT-proBNP may not be a good indicator in acromegaly.


Assuntos
Acromegalia/diagnóstico , Peptídeo Natriurético Encefálico/sangue , Fragmentos de Peptídeos/sangue , Precursores de Proteínas/sangue , Acromegalia/sangue , Adolescente , Adulto , Ecocardiografia , Feminino , Insuficiência Cardíaca/sangue , Insuficiência Cardíaca/diagnóstico , Humanos , Masculino , Pessoa de Meia-Idade
7.
Eat Weight Disord ; 13(1): e4-7, 2008 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-18319630

RESUMO

BACKGROUND AND AIM: One of the major public health problems in Turkey is the high prevalence of obesity, which is particularly frequent among women. As it has been reported that parity affects body fat and BMI, the aim of this study was to evaluate the association between parity number, socioeconomic status and obesity. SUBJECTS AND METHODS: The study involved 286 married or divorced women aged 28- 80 years (mean age: 46.7+/-9.7), who were divided into two groups depending on whether they had experienced three or fewer pregnancies (group 1) or four or more pregnancies (group 2). We measured their body weight and height, and waist and hip circumferences, calculated their BMI, and determined their body fat percentage and fat mass by means of bioelectric impedance. RESULTS: The women in group 2 had a higher BMI, a greater fat percentage and fat mass, a larger waist circumference and higher waist/hip ratio values than those in group 1, and their mean age and illiteracy ratio were also higher. There was a significant correlation between parity number and body weight, BMI and hip circumference. CONCLUSIONS: Among other risk factors, a high parity number and socioeconomic indices may be associated with obesity in women.


Assuntos
Escolaridade , Obesidade/etiologia , Paridade , Adulto , Idoso , Índice de Massa Corporal , Peso Corporal , Feminino , Humanos , Pessoa de Meia-Idade , Obesidade/diagnóstico , Gravidez , Fatores de Risco , Turquia , Relação Cintura-Quadril
8.
J Endocrinol Invest ; 30(3): 210-4, 2007 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-17505154

RESUMO

OBJECTIVE: Hypertrophic obesity correlates with metabolic complications of obesity. We evaluated adipocyte volume and its relationship with tumor necrosis factor alpha (TNF-alpha), interleukin-6 (IL-6), adiponectin and high sensitivity C-reactive protein (hs-CRP) levels. SUBJECTS AND METHODS: Patients were divided into 4 groups; lean healthy controls [body mass index (BMI): 24.2+/-1.4 kg/m2], non-diabetic obese patients (30.2+/-2.9), obese (30.1+/-3.2) and non-obese (22.2+/-1.5) Type 2 diabetic patients. TNF-alpha, hs-CRP, adiponectin and IL-6 levels were measured preoperatively and sc fat specimens were obtained during operation. Semi-thin sections were stained with toluidine-blue and evaluated by light microscopy. Fat volumes were calculated by Goldrick's formulation. RESULTS: Mean adipocyte volumes were higher in obese diabetic patients than in other groups (p<0.0001). Mean TNF-alpha, hs-CRP and IL-6 levels were higher in obese diabetic patients than in control subjects, obese non-diabetic and non-obese diabetic patients (p<0.0001, p<0.02 and p<0.01, respectively). Mean TNF-alpha levels of non-diabetic obese patients were higher than the control group (p<0.05). Mean IL-6 levels of diabetic and non-diabetic obese patients were higher than control subjects (p<0.02 and p<0.0001, respectively). Mean adiponectin levels of control subjects were higher than non-diabetic obese, non-obese diabetic and obese-diabetic subjects (p<0.0001). Mean adiponectin levels of obese diabetic patients were lower than non-diabetic obese subjects (p<0.008). Mean hs-CRP levels were higher in diabetic patients whether they were obese or not. There was a positive correlation between adipocyte size and TNF-alpha (p<0.01), IL-6 (p<0.03) and hs-CRP levels (p<0.004), and negative correlation between adipocyte size, adiponectin levels (p<0.0001). CONCLUSIONS: TNF-alpha, IL-6 and hs-CRP levels were positively, adiponectin negatively correlated with adipocyte size. Therefore, adiposity may be an inflammatory condition.


Assuntos
Adipócitos/patologia , Adiponectina/sangue , Adiposidade/fisiologia , Proteína C-Reativa/metabolismo , Interleucina-6/sangue , Fator de Necrose Tumoral alfa/sangue , Adipócitos/citologia , Adipócitos/metabolismo , Adiposidade/imunologia , Adulto , Idoso , Tamanho Celular , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/imunologia , Diabetes Mellitus Tipo 2/patologia , Feminino , Humanos , Inflamação/sangue , Inflamação/imunologia , Inflamação/patologia , Masculino , Pessoa de Meia-Idade , Obesidade/sangue , Obesidade/imunologia , Obesidade/patologia
9.
Indian J Med Microbiol ; 24(4): 289-91, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-17185850

RESUMO

Malignant otitis externa (MOE) is a severe infection of external auditory canal and skull base. A 17-year-old diabetic girl was admitted with diabetic ketoacidosis. Cellulitis of her right ear occurred on the second day of hospitalization and a black necrotic scar in the same region appeared on the next day. The lesion rapidly invaded to right side of neck and surrounding tissue of the patient. Therefore, antimycotic therapy was started. Unfortunately the patient died on seventh day of hospitalization because of probably extensive fungal invasion. Physicians should suspect MOE connected to mucormycosis especially in patients with cutaneous lesions of ear unresponsive to antibiotic therapy.


Assuntos
Absidia/isolamento & purificação , Cetoacidose Diabética/complicações , Mucormicose/microbiologia , Otite Externa/microbiologia , Adolescente , Evolução Fatal , Feminino , Humanos , Mucormicose/patologia , Necrose , Otite Externa/patologia
10.
Diabet Med ; 23(10): 1151-4, 2006 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-16978383

RESUMO

AIMS: To evaluate the relationship between HbA(1c) and fasting plasma glucose (FPG) and postprandial plasma glucose (PPG) levels, and to estimate the mean plasma glucose (mPG) derived from FPG and PPG that would predict Type 2 diabetic subjects with poor glycaemic control. METHODS: FPG, PPG and HbA(1c) values from 565 Type 2 diabetic patients (247 men and 318 women) were recorded. Linear regression analysis and Pearson's correlation was used to determine the relationship between HbA(1c), FPG and PPG. FPG and PPG were included as explanatory variables of HbA(1c) in linear regression analysis. RESULTS: The American Diabetes Association's objective of achieving an HbA(1c) level < 7.0% was obtained in 26.2% of the patients. The coefficients of FPG and PPG which determined HbA(1c) were similar. Therefore, mPG was calculated using the equation (FPG + PPG)/2. Pearson's correlation coefficient for HbA(1c) and FPG, PPG and mPG were 0.723 (P < 0.0001), 0.734 and 0.761 (P < 0.0001), respectively. A mPG cut-off value of 10 mmol/l predicted an HbA(1c) > 7% in the whole population, with a sensitivity of 84.2% and specificity of 80.4%. The area was high (0.90) in receiver-operating characteristic (ROC) curve analysis performed to examine the performance of mPG to predict HbA(1c) > 7%. CONCLUSIONS: The mPG derived from FPG and PPG correlates strongly with HbA(1c). We therefore suggest that using a cut-off of 10 mmol/l for mPG may be appropriate in diabetes management in the primary-care setting, where most management of Type 2 diabetes occurs.


Assuntos
Glicemia/metabolismo , Diabetes Mellitus Tipo 2/diagnóstico , Jejum/metabolismo , Hiperglicemia/metabolismo , Glicemia/análise , Diabetes Mellitus Tipo 2/metabolismo , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Período Pós-Prandial
11.
J Endocrinol Invest ; 28(2): 145-50, 2005 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-15887860

RESUMO

BACKGROUND AND AIMS: C-reactive protein (CRP) is an inflammatory marker that predicts coronary heart disease (CHD) risk. Diabetes mellitus (DM) counts as a CHD risk equivalent. We aimed to compare serum high sensitivity CRP (hs-CRP) levels in Type 2 diabetic (T2DM) men without CHD, non-diabetic CHD patients and T2DM patients with CHD. SUBJECTS AND METHODS: Four groups were formed; Group 1 [DM(+), CHD(-), no.=25], Group 2 [DM(-), CHD(+) no.=25], Group 3 [DM(+), CHD(+), no.=25], and Group 4 (controls, no.=30). Serum hs-CRP, insulin, glucose, total, HDL-, LDL- and VLDL-cholesterol, triglyceride levels and homeostasis model assessment for insulin resistance (HOMA-IR) index were determined. RESULTS: Mean hs-CRP level of Group 1 (0.6+/-0.29) was not different statistically from Group 2 (1.44+/-0.97). Mean hs-CRP levels were higher in men with CHD, whether they were diabetic (Group 3; 3.83+/-2.01 mg/dl) or non-diabetic (Group 4), than in control subjects (0.16+/-0.15; p=0.0001 and p<0.004, respectively). Mean hs-CRP level of Group 3 was also higher than Group 2 (p=0.0001). There was a positive correlation between serum hs-CRP and glycated hemoglobin (HbA1c; r=0.277, p<0.01), fasting insulin (r=0.336, p<0.02) and HOMA-IR (r=0.348, p<0.02) in T2DM men with or without CHD. CONCLUSIONS: T2DM men without CHD had similar CRP levels with non-diabetic CHD patients, whereas CRP levels of T2DM men with CHD were higher than non-diabetic men with CHD. Because of a positive correlation between serum hs-CRP and HbA1c, fasting insulin and HOMA-IR, inflammation, insulin resistance and hyperglycemia jointly contribute to the cardiovascular risk in T2DM men.


Assuntos
Proteína C-Reativa/análise , Doença das Coronárias/complicações , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/fisiopatologia , Hemoglobinas Glicadas/análise , Resistência à Insulina , Adulto , Glicemia/análise , Estudos de Casos e Controles , HDL-Colesterol , Diabetes Mellitus Tipo 2/sangue , Jejum/sangue , Homeostase , Humanos , Insulina/sangue , Masculino , Pessoa de Meia-Idade , Concentração Osmolar
12.
Public Health ; 114(5): 411-2, 2000 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11035467

RESUMO

In this study, the HBsAg carrier state and the role of horizontal transmission were investigated among primary and high school students in southeastern Anatolia where HBsAg seropositivity is remarkably high. In total, 350 students from primary school first grade, 350 students from fifth grade, 400 students from high school eleventh grade and 400 healthy adults as a control group were studied. In all cases HBsAg and anti-HBs were screened by ELISA. HBsAg positivity was 2.4% in first grade, 6.1% in fifth and 6.7% in eleventh grade students. Anti-HBs positivity was 14% in first grade, 20% in fifth and 21% in eleventh grade students. HBsAg positivity was 9% and anti-HBs, 49% in the control group. There is a significant difference between first and fifth grade students for HBsAg positivity (2.1% vs 6.1% and P<0.05). This difference decreased during the high school years (6.2% and P>0.05). There is also a similar statistically significant difference for anti-HBs positivity during the primary school years (14% vs 20%, P<0.05). These findings show that the risk of horizontal transmission of HBV is especially important during elementary school years between the ages of 7 and 11 y. All infants or at least elementary school first grade students in Turkey should have HBV vaccinations.


Assuntos
Portador Sadio/transmissão , Transmissão de Doença Infecciosa/estatística & dados numéricos , Hepatite B/transmissão , Estudantes/estatística & dados numéricos , Adolescente , Distribuição por Idade , Portador Sadio/sangue , Portador Sadio/epidemiologia , Portador Sadio/imunologia , Estudos de Casos e Controles , Criança , Hepatite B/sangue , Hepatite B/epidemiologia , Hepatite B/imunologia , Antígenos de Superfície da Hepatite B/sangue , Humanos , Vigilância da População , Fatores de Risco , Estudos Soroepidemiológicos , Turquia/epidemiologia
13.
J Endocrinol Invest ; 26(7): 655-9, 2003 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-14594118

RESUMO

Insulin resistance is common in polycystic ovary syndrome (PCOS). Moderate elevations in serum PRL concentration may contribute to insulin resistance in PCOS. The aim of this study was to determine PRL on development of insulin resistance in non-obese hyperprolactinemic patients with PCOS. Ninety-eight non-obese subjects with PCOS and 100 non-obese healthy control were accepted in the study. Serum glucose, lipids, androgens, free androgen index (FAI), gonadotropins, fat mass and percentage, SHBG, and insulin levels were measured. Homeostasis model assessment (HOMA) was used as index of pancreatic beta-cell function and tissue insulin sensitivity. Independent t-test was used in comparison of results. In patients with PCOS, FAI and mean HOMA-(%B) level were higher than in the control group (p<0.0001), whereas mean HOMA-(%S) in subjects with PCOS was lower than in the control group (p<0.0001). Patients with PCOS were divided into subgroups according to their serum prolactin level (< 24 or > or = 24 ng/ml). Although FAI was not different, mean insulin and HOMA-(%B) levels in hyperprolactinemic patients were higher than in normoprolactinemic subjects (p<0.001). HOMA-(%S) in hyperprolactinemic patients with PCOS was lower than in normoprolactinemic patients (p<0.002). In conclusion, PCOS is associated with insulin resistance; non-obese hyperprolactinemic PCOS patients may be more insulin-resistant than normoprolactinemics and there may be an association between hyperprolactinemia and insulin resistance in PCOS.


Assuntos
Hiperprolactinemia/complicações , Resistência à Insulina/fisiologia , Síndrome do Ovário Policístico/complicações , Adulto , Antropometria , Índice de Massa Corporal , Feminino , Hormônios/sangue , Humanos , Insulina/fisiologia , Ilhotas Pancreáticas/fisiopatologia , Testes de Função Pancreática
14.
Horm Metab Res ; 36(10): 716-20, 2004 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-15523598

RESUMO

BACKGROUND: Patients with end-stage renal disease (ESRD) are known to have insulin resistance. Treatment with EPO is associated with improvement in insulin sensitivity in uremic patients. The aim of this study was to compare insulin sensitivity and pancreatic B cell function in adult non-diabetic uremic hemodialysis patients treated with or without rHuEPO. SUBJECTS AND METHODS: Three groups of subjects were included to the study: hemodialysis patients treated with rHuEPO [EPO(+) group] or without rHuEPO [EPO(-) group], and healthy controls. Anthropometrical parameters, lipid levels, fasting glucose and insulin levels were measured in all subjects. Homeostasis Model Assessment (HOMA) was used to compare insulin sensitivity. ANOVA, independent t-test, and Pearson correlation were used for statistical analysis. RESULTS: Mean insulin level of control group (20.04 +/- 7.2 pmol/l) was significantly lower than EPO(+) group (p < 0.04) and EPO(-) group (p < 0.0001). HOMA-(%B) levels in the EPO(+) group were significantly lower than in the EPO(-) group (106 +/- 42, 140 +/- 63 respectively, p < 0.02). HOMA-(%B) levels in the control group (66 +/- 17) were significantly lower than in the EPO(+) and EPO(-) group (p < 0.005 and p < 0.0001 respectively). HOMA-(%S) levels in the EPO(+) groups was significantly higher than in the EPO(-) group (91 +/- 40, 56 +/- 26, respectively; p < 0.01). HOMA-(%S) levels of control group (125 +/- 24 ) was significantly higher than EPO(+) and EPO(-) groups (p < 0.02, p < 0.0001 respectively). We found a positive correlation between duration of erythropoietin treatment and insulin sensitivity (r = 0.484, p < 0.002). CONCLUSIONS: Firstly, patients treated with EPO are insulin sensitive compared to patients not treated with EPO. Secondly, duration of erythropoietin treatment is positively correlated with insulin sensitivity in hemodialysis patients.


Assuntos
Eritropoetina/uso terapêutico , Resistência à Insulina , Diálise Renal , Adulto , Idoso , Pressão Sanguínea , Calcitriol/sangue , Feminino , Humanos , Insulina/sangue , Ilhotas Pancreáticas/fisiologia , Falência Renal Crônica/metabolismo , Lipídeos/sangue , Masculino , Pessoa de Meia-Idade , Proteínas Recombinantes
15.
Gynecol Endocrinol ; 19(5): 267-73, 2004 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-15726915

RESUMO

The aim of this study was to investigate the changes in serum levels of leptin, cytokines and lipoproteins in women with pre-eclampsia and to evaluate their clinical significance in the pathogenesis of pre-eclampsia. We performed a prospective study involving 45 women with pre-eclampsia in the third trimester of pregnancy and 30 normotensive women in the third trimester of pregnancy. Serum level of leptin was measured by enzyme immunoassay using a Cayman chemical kit. Serum levels of tumor necrosis factor (TNF)-alpha, interleukin (IL)-1beta, soluble IL-2 receptor (slL-2R), IL-6 and IL-8 were measured by using a non-radioimmunoassay chemiluminescent method. Serum lipid concentrations were measured by an Abbott Aeroset (USA) autoanalyzer. Serum levels of apolipoprotein (Apo)A-I and ApoB were evaluated by nephelometrics assays. Differences between groups were evaluated with Student's unpaired t test and, when a variable was not normally distributed, the Mann-Whitney U test was used. The relationship between the variable was explored by the Pearson correlation test. Serum levels of leptin, TNF-alpha, IL-1beta, sIL-2R, IL-6 and IL-8 in the pre-eclamptic women were significantly higher than in normotensive women (p < 0.001). In the pre-eclamptic women serum levels of triglycerides, total cholesterol and low-density lipoprotein (LDL)-cholesterol were significantly increased (p < 0.001), while high-density lipoprotein (HDL)-cholesterol and Apo-A were significantly decreased compared to levels in normotensive pregnant women (p < 0.001). No significant differences were noted between the groups in Apo-B (p > 0.05). Serum levels of TNF-alpha were significantly correlated with the serum levels of IL-6, IL-8, triglycerides, sIL-2R, Apo-A and hematocrit in pre-eclamptic women (r = 0.418, p < 0.05; r= 0.389, p < 0.01; r=0.312, p < 0.05; r= -0.318, p < 0.05; r= -0.340, p < 0.05 and r=0.41, p < 0.01, respectively). A negative correlation was seen between serum level of leptin and both IL-1beta and Apo-A in pre-eclamptic women (r=-0.44, p < 0.05; r=-0.39, p < 0.05, respectively). Serum levels of IL-6 were also significantly correlated with the serum levels of HDL-cholesterol, LDL-cholesterol and body mass index (BMI) in pre-eclamptic women (r=0.40, p < 0.01; r=-0.568, p < 0.01; r= -0.30, p < 0.05, respectively). In addition, serum level of IL-8 were significantly correlated with the serum levels of HDL-cholesterol, total cholesterol and BMI in pre-eclamptic women (r= 0.368, p < 0.05; r=0.513, p < 0.01 and r= -0.41, p < 0.01, respectively). We found that the pre-eclampsia associated with increases in serum levels of leptin, TNF-alpha, cytokines, triglycerides, total cholesterol and LDL-cholesterol was associated with a significant reduction in serum levels of HDL-cholesterol and Apo-A. These association may be due to the abnormal lipid metabolism and immune activation involved in the pathogenesis of this disease.


Assuntos
Citocinas/sangue , Leptina/sangue , Lipoproteínas/sangue , Pré-Eclâmpsia/sangue , Apolipoproteína A-I/sangue , Apolipoproteínas B/sangue , Índice de Massa Corporal , Colesterol/sangue , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Feminino , Humanos , Interleucina-1/sangue , Interleucina-6/sangue , Interleucina-8/sangue , Gravidez , Terceiro Trimestre da Gravidez , Estudos Prospectivos , Receptores de Interleucina-2/sangue , Receptores para Leptina , Triglicerídeos/sangue , Fator de Necrose Tumoral alfa/análise
16.
Gynecol Endocrinol ; 19(1): 47-50, 2004 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-15625773

RESUMO

We identified polyglandular autoimmune (PGA) syndrome type III in a 24-year-old nurse with common variable immunodeficiency (CVID). An immune-mediated disorder, membranoproliferative glomerulonephritis, was diagnosed when she was 15 years old. Clinical examination and laboratory findings revealed a PGA syndrome due to the presence of hypergonadotropic hypogonadism, insufficient growth hormone response and thyroid autoimmunity. The patient had neither adrenal disease nor hypoparathyroidism. Therefore we concluded that this patient has PGA syndrome type III. This is an interesting case, because we could not find any previous report of such coexistence between PGA type III and CVID in a Medline search. Coexistence of these two entities may be a result of autoimmunity and the association of both conditions with human leukocyte antigen.


Assuntos
Imunodeficiência de Variável Comum/complicações , Poliendocrinopatias Autoimunes/complicações , Poliendocrinopatias Autoimunes/diagnóstico , Adulto , Autoanticorpos/sangue , Densidade Óssea , Imunodeficiência de Variável Comum/diagnóstico , Imunodeficiência de Variável Comum/terapia , Estrogênios Conjugados (USP)/administração & dosagem , Feminino , Glomerulonefrite Membranoproliferativa/diagnóstico , Glomerulonefrite Membranoproliferativa/imunologia , Hormônio do Crescimento Humano/farmacologia , Hormônio do Crescimento Humano/uso terapêutico , Humanos , Hipogonadismo/imunologia , Acetato de Medroxiprogesterona/administração & dosagem , Poliendocrinopatias Autoimunes/tratamento farmacológico , Glândula Tireoide/imunologia
17.
J Endocrinol Invest ; 27(4): 353-6, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15233555

RESUMO

BACKGROUND: Prostate-specific antigen (PSA) is expressed in many female tissues and its concentrations were higher in hirsute subjects. We aimed to determine serum PSA level in hirsute women and evaluate the effect of flutamide+desogestrel/ethynil estradiol combination. SUBJECTS AND STUDY DESIGN: Thirty patients with polycystic ovary syndrome (PCOS) and 30 healthy controls were studied. Hirsutism was defined by modified Ferriman-Gallwey score (FGS). Free androgen index (FAI) was used for hyperandrogenism. Patients received flutamide (500 mg/d) and oral contraceptive (desogestrel+ethinyl estradiol) for 9 months. RESULTS: Mean FGS (p<0.0001), insulin (p<0.01), FAI (0.0001), androstenedione (p<0.0001), LH (p<0.05), and free testosterone (p<0.003) levels of patients with PCOS were higher than the control group. Mean serum total and free PSA level of PCOS patients were higher than the control group (p<0.0001 and p<0.0001). We found a positive correlation between total PSA levels and FGS (r=0.568, p<0.001), FAI and FGS (r=0.456 and p<0.01). There was also a positive correlation between FAI and total PSA (r=0.503 and p<0.005). At the end of treatment, FGS, androstenedione, free and total testosterone, FAI, serum PSA and LH levels decreased significantly [serum total PSA was 0.0208 +/- 0.0178 ng/ml at baseline and 0.0061 +/- 0.0044 ng/ml after treatment (p<0.0001)]. CONCLUSIONS: 1. Serum prostate specific antigen level is higher in patients with PCOS; 2. There is a positive correlation among FGS, FAI and PSA levels; 3. Serum PSA levels decrease with antiandrogen treatment; 4. Serum PSA measurement might be a marker for hirsutism.


Assuntos
Antagonistas de Androgênios/administração & dosagem , Desogestrel/administração & dosagem , Etinilestradiol/administração & dosagem , Flutamida/administração & dosagem , Síndrome do Ovário Policístico/sangue , Antígeno Prostático Específico/sangue , Adolescente , Adulto , Androgênios/sangue , Androstenodiona/sangue , Anticoncepcionais Orais Hormonais/administração & dosagem , Quimioterapia Combinada , Feminino , Hirsutismo/sangue , Hirsutismo/etiologia , Humanos , Insulina/sangue , Hormônio Luteinizante/sangue , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/tratamento farmacológico , Testosterona/sangue
18.
Eat Weight Disord ; 4(3): 128-32, 1999 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11234241

RESUMO

UNLABELLED: Ten male Wistar-albino rats were overfed with high-fat diet (margarine at the dose 40 g/kg body weight/day in addition to standard rat diet) during six months from the age of between 8-12 weeks. Ten male rats received a standard chow for the same period. The body weights of the overfed rats increased time dependently (basal 171.5 +/- 5, at sixth month 268 +/- 19 g), whereas those of the rats fed with standard chow did not increase significantly (basal 177 +/- 6.4, at sixth month 220 +/- 10 g). At the sixth month, mean body fat percentages were 36.3 +/- 6.7% and 24.2 +/- 5.4% respectively. Both total cholesterol-triglyceride levels and mean serum leptin levels were also higher than in the overfed rats (p < 0.01 and p < 0.05 respectively). The livers of all rats were histopathologically normal. CONCLUSION: High-fat diet resulting in an increased body fat percentage in rats is associated with hyperleptinemia, hypercholesterolemia and hypertriglyceridemia.


Assuntos
Gorduras na Dieta/administração & dosagem , Leptina/sangue , Obesidade/etiologia , Animais , Composição Corporal/fisiologia , Peso Corporal/fisiologia , Colesterol/sangue , Ingestão de Energia/fisiologia , Masculino , Obesidade/sangue , Ratos , Ratos Wistar , Triglicerídeos/sangue
19.
J Endocrinol Invest ; 26(4): 341-6, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12841542

RESUMO

It has been shown that prolactin (PRL) induces glucose intolerance, hyperinsulinemia and insulin resistance in several animal species. In women with microprolactinomas, the sensitivity to insulin is lower in hyperprolactinemia than in normoprolactinemia. Thirty non-obese women with hyperprolactinemia and 30 healthy non-obese women were included into the study. Age, body weight (bw), height, body mass index (BMI), waist circumference, hip circumference and waist to hip ratio of both patients with hyperprolactinemia and control subjects were not different. Mean serum prolactin level was higher in hyperprolactinemic patients than in control group (84.5 +/- 51.1 ng/ml and 13.8 +/- 5.3 ng/ml respectively, p<0.002). Mean HOMA-(%B) index of hyperprolactinemic patients was higher than in control subjects (121 +/- 49 and 84 +/- 38, respectively, p<0.02). Mean HOMA-(%S) index was lower in hyperprolactinemic patients (56 +/- 39 and 105 +/- 55, respectively, p<0.006). Serum total testosterone, free testosterone, androstenedione, estradiol, cortisol, sex hormone binding globulin and DHEA-S levels in both hyperprolactinemic women and healthy subjects, statistically did not show any difference between the two groups. The present data indicate that hyperprolactinemia is associated with an insulin-resistant state. This resistant state may not be a result of obesity, androgenic hormones, and SHBG or pregnancy. It may be the result of serum free fatty acids (FFA) levels, decrement in the number of insulin receptors (by a down-regulation of insulin receptors) or post-binding defect in insulin action or more.


Assuntos
Hiperprolactinemia/sangue , Resistência à Insulina/fisiologia , Insulina/sangue , Ilhotas Pancreáticas/metabolismo , Prolactina/sangue , Adolescente , Adulto , Composição Corporal/fisiologia , Feminino , Humanos , Hiperprolactinemia/complicações , Modelos Biológicos , Valores de Referência
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