ACTA ENDOCRINOLOGICA (BUC)

Context. Hashimoto’s thyroiditis is the most common autoimmune disorder as cause of secondary hypothyroidism. The disease is associated with several metabolic disturbances and inflammatory disorders. Objectives. The aim of the current report was to evaluate several inflammatory and metabolic predictors of Hashimoto’s thyroiditis. Subjects and Methods. In the current study, forty patients with Hashimoto’s thyroiditis participated in the current study. They were aged between 20 to 50 years old. Anthropometric and nutritional measurements were assessed and biochemical factors including serum VEGF, IL-23, Nesfatin-1 and serum lipids were measured. Results. Waist circumference was higher among patients with lower serum TSH concentrations. Serum HDL and T4 concentrations were lower and serum IL-23 was higher among patients with higher TSH concentrations. BMI, WC and serum HDL were negative predictors of serum TSH while IL-23 was positively associated with TSH concentrations. Serum lipids including TC, TG and LDL were also negatively associated with T3 and T4 concentrations. Conclusions. According to our findings, VEGF and serum IL-23 were potent predictors of Hashimoto’s thyroiditis. However, further studies are warranted to better clarify these associations and underlying pathologic mechanisms.

Introduction. Papillary thyroid microcarcinoma has provoked discussion among the endocrinological community due to the extremely diverse therapeutic methods adopted in international guidelines. From the radical approach of total thyroidectomy with prophylactic central lymphatic dissection to "active monitoring" and opinions such as "papillary microcarcinoma is not carcinoma". Aim. To investigate the factors of invasiveness in papillary microcarcinoma. Material and methods. We included 184 patients with thyroid microcarcinoma, operated in the Department of General Surgery "Kaspela",Plovdiv, for a period of five years. Results. Intra-organ metastases or multifocal growth was identified in 38 of the patients. Positive for micro and macro metastases lymph nodes in the central lymphatic basin are found in 54. In 46 of them we identified metastases in the ipsilateral, and in 21 in the contralateral central neck nodes. The analysis of patients with lateral metastases found 7 unilaterally and 3 bilaterally. Skip metastases were registered in 4 of these 10 patients. Conclusions. The results of our study show that despite the favorable prognosis and non-aggressive behavior of papillary microcarcinoma, factors attesting to the invasive nature of the tumor occur in 44.5% or almost half of patients. This requires careful and individual approach constructing therapeutic strategy for the treatment of patients with papillary microcarcinoma

Objective. Insulinoma is one of the functional neuroendocrine tumors, which induce hypoglycemia caused by inadequate high secretion of insulin. In rats, two genes coding for insulin, insulin 1 (Ins1) and insulin 2 (Ins2) are found on chromosome 1. Some structural feature studies have shown that Ins1 was generated from a transcript of Ins2 and was inserted into the genome by an RNA-mediated duplication–transposition event. Methods. In this study, the author has investigated how the expression of insulin genes, Ins 1 and Ins2, are altered by Pdx-1 gene overexpression in the insulinoma cell line, Rin-5F. Results. Overexpression of the Pdx-1 gene increases Ins1 gene mRNA expression, not Ins2 gene mRNA expression, in the insulinoma cell line. Thus, levels of the rat insulin 1 and insulin 2 peptides may be changed under specific conditions. Conclusions. This is the first report that Ins1, but not Ins2, is significantly increased by Pdx-1 gene overexpression in the insulinoma cell line. This could indicate more research and analysis of insulinoma tumorigenesis and Pdx-1 gene expression.

Objective. We aimed to investigate the potential relationship between plasma alarin levels and type 2 diabetes mellitus (T2DM). Patients and Method. We included 154 participants, divided into four groups in a cross-sectional study design. The first group includes patients with T2DM without complications (n=30), the second group patients with T2DM with microvascular complications (T2DMnoC n=32), the third group patients with T2DM with macrovascular complications, T2DM-MV (n=32) and the last group is the healthy control group (n=60). Results. In our study 94 patients were diabetic; 47 females and 47 males. The control group consists of 60 people, 30 women and 30 men. It was found that these had a significant (p>0.05) variation in serum alarin levels among the T2DM (T2DM-noC=3.1±0.7 ng/mL T2DMmV=2.8±0.4 ng/mL, T2DM-MV= 3.6±0.4 ng/mL) versus control group (15.6±2.6). We failed to find a significant variation of serum alarin levels (p>0.05) between T2DM subgroups. Serum alarin levels were significantly higher among control patients (p<0.05). There was no difference between diabetic sub-groups. Conclusion. We concluded that serum alarin levels in patients with T2DM are lower than in normal people. Further studies are needed to investigate the possible prognostic value of alarin in clinical practice in T2DM.

Abstract Context. The inhibition of adipocyte differentiation has a significant role on the prevention of obesity and obesity-associated complications. Objective. In this study, we aimed to detect whether hyperoside is able to inhibit the conversion of pre-adiposits into mature adiposits. Design and Methods. 3T3-L1 pre-adipocytes were stimulated so as to differentiate into mature adipocytes. Hyperoside in non-cytotoxic concentrations (1, 2, 5, and 10 μM) were separately applied to differentiated 3T3-L1 cells. Oil red O staining was performed and triacylglycerol contents were measured. Furthermore, gene and protein expressions of transcription factors, adipogenic genes and adipokines were examined in order to investigate the effect of hyperoside on adipocyte differentiation. Results. Hyperoside in high concentrations significantly suppressed the adipogenic process by inhibiting the expression of transcription factors and adipogenic genes and reducing lipid accumulation in adipocytes (p<0.05). Low doses of hyperoside are able to inhibit adipogenesis, but higher doses are needed to reduce fat accumulation in mature adipocytes. In the case of maturing preadipocytes, 5 μ M of hyperoside exerts its antiadipogenic effect at the early stages of adipogenesis, whereas 10 μ M of hyperoside acts at the later stages (p<0.05). Conclusion. These results suggest that hyperoside has a beneficial effect on the prevention and treatment of obesity.

Earlier reports had shown a profound effect of the below sea level environment of the Jordan Valley (JV) on serum levels of sex hormones in humans including testosterone (T).\r\nThis effect was suggested to be due to the environmental factors of higher temperatures and higher barometric pressure of the JV compared to those factors in areas above sea level such as Irbid City (IC).\r\nMethods. Herein, two groups of eight male Sprague Dawley rats were selected from all litters obtained at our Animal Facility at the Jordan University of Science and\r\nTechnology. The two groups were subdivided between IC and the JV.\r\nResults. Adrenocortical cytochromes P-450 of the steroidogeneic pathways were higher in rats of both sexes growing in the JV compared to those maturing in IC.\r\nIntratesticular T levels were significantly higher in male rats growing in the JV than in those of the IC (638.262?18.2464 ng / mL compared to 434.108?22.3764 ng / mL).\r\nConclusion. The high blood levels of T in rats of the JV compared to those of IC are due not only to the high testicular production of T, but also to the higher activities of the adrenocortical cytochromes P-450 in rats growing at the JV.

Objective. Few studies are available on the temporal sequence and effect of ethnicity,\r\nsocioeconomic status and environment on pubertal changes leading to sexual maturation in\r\nboys; therefore, we describe normative values for developmental changes in physical and\r\nendocrine characteristics at onset and during progression of the pubertal process in a cohort\r\nof Pakistani boys.\r\nDesign. This cross-sectional study involved 234 healthy, 8-18 years old, school-based boys.\r\nMethods. Body weight, height, appearance of pubic hair patterns and testicular volume\r\n(TV) along with serum FSH, LH, testosterone and GH levels were measured.\r\nResults. Pubarche was first recorded at a mean age of 11.3 years [Tanner stage 2]. TV of\r\n3 ml and the first significant increase in mean serum FSH and LH levels were detected at 10\r\nyears of age. The mean percent increase in TV/year was maximal from 12-14 years, coinciding\r\nwith rising testosterone levels. The levels of gonadotropins increased more than 2-fold between\r\n12-14 years. Whereas, LH continued to increase in postpubertal boys and FSH levels plateaued\r\nat 15 years. GH concentrations were shown to be maximal at 12-13 years and declined\r\nthereafter to prepubertal values. However, BW and height were significantly correlated with\r\nage; yet no significant correlation was seen between body mass index (BMI) and age.\r\nConclusion. The present data among boys indicates an earlier transition to the Tanner stage\r\n2 and an increase in TV, resulting in a slightly more extended period of pubertal development, as\r\ncompared to European and American children pointing to ethnic, social and economic differences.

Graves’ orbitopathy (GO) is an autoimmune condition and the main extra thyroidal expression of Graves’ disease. Optimal management of GO comprises a coordinated approach addressing the thyroid dysfunction and the orbital disease, which requires a strict collaboration between internists/ endocrinologists, ophthalmologists/ orbital surgeons and basic scientists, in combined thyroid-eye units. European Group on GO (EUGOGO) is a multidisciplinary association of endocrinologists, ophthalmologists, neuroradiologists and epidemiologists from the European centers, who have special clinical and research interests in GO.

Background. In the Carpathian area of Romania the Iodine Deficiency Disorders (IDD) including endemic goiter are a public health problem. Recently, the legislation imposing salt iodization was strengthened (from 10 to 20 ± 5 mg iodine/kg salt) and enlarged (universal salt iodization, USI, has been applied to bread industry since 2002). Objective. The effect of bread iodization by law upon the characteristics of goiter endemy was assessed in Arges county, Romania. Design. The characteristics of goiter endemy (as defined by WHO/ICCIDD/UNICEF) were determined in children in the years 1999 (control group C) and 2004 (study group S), two years after universal bread iodization. In the control group C there were 1,241 schoolchildren 6-14 years old, living in 5 villages and in Pitesti town. In the study group S there were 408 schoolchildren 6-12 years old, living in 7 villages and in Pitesti town. After universal bread iodization, a neonatal screening for hypothyroidism was also performed on 11,216 newborns in Arges county, between January 2003 and December 2004. The content of KIO3 in the salt was assessed both in samples collected from village shops in the years 1999 (10 samples) and 2004 (17 samples). The iodine content of drinking water in Arges county villages was assessed in 1999. Methods. Three parameters of IDD endemy were evaluated, i.e. the thyroid volume in schoolchildren by palpation or/and ultrasonography, urinary iodine by the Sandell-Kolthoff method, and neonatal blood TSH levels in dry spot by immunoassay. A questionnaire was filled in by 912 schoolchildren in 1999 and by 408 schoolchildren in 2004.

Context. In the year 2003-2004 a circumstantial investigation of young men reproductive health parameters was performed in Nordic and Baltic countries, but sexuality remained undetermined. Objective. To determine the suitability of the European Male Ageing Study – Sexual Function Questionnaire (EMAS – SFQ) for investigation of sexuality of 26–36 year aged general population and to investigate sexuality of Kaunas participants in the project “The reproductive function of Estonian, Latvian and Lithuanian Young men (2003-2004)” (KELLY), using EMAS – SFQ. Design. Sixty one 26–36 year aged KELLY men were recaptured from the list of participants in a 2003-2004 study and completed EMAS – SFQ. Their anthropometric characteristics, scores of sexuality (22 parameters from EMAS – SFQ, 3 calculated parameters and 2 parameters consisting from answers to the only question - masturbation and erectile function-for each participant) were analysed, in conjunction with anthropometric, sperm quality and hormone levels of 2003-2004 18–25 year old general population. Results. Overall sexual functioning and masturbation were higher as compared to all the published data for different age men and different testosterone concentration groups of EMAS study. Conclusions. KELLY sexuality results, obtained using EMAS – SFQ, would be considered as referral values for young men in countries with generally good reproductive health.