ACTA ENDOCRINOLOGICA (BUC)

As the kits used in routine for assessment of human growth hormone (hGH) status in CSF are originally designed for the serum and plasma, the specifications and limitations imposed by some environmental factor are important to be known. The aim of study was to\r\ninvestigate the influence of different protein concentrations on an immunometric assay to design a suitable and reproducible method for hGH measurement in different matrices, particularly in CSF-like environment.\r\nMaterial and methods. Experiments were performed using an in-house protocol for the determination of hGH by Time Resolved Immunofluorometric method. Standard curves were prepared in different biological matrices (sheep, human or fetal calf serums and CSFlike matrix). The concentrations of albumin and gamma-globulins were the variable parameters. The gold standard was the standard curve in sheep serum.\r\nResults. Constantly high background signal values were obtained at different albumin concentrations, in the absence of IgG, indicating intense non-specific binding and a low sensitivity. This fact allows accurate hGH measurement at over 5-10 ng/ml. Using a reaction environment enriched in IgG with a standard albumin concentration, background signal decreases while increasing IgG concentration. The highest sensibility is obtained for 5 g/l and 2.5 g/l IgG environments, allowing the sample signal to be measured accurately at hGH concentrations of 0.2 ng/ml or 0.5 ng/ml respectivly. This is observed in all biological matrices used.\r\nConclusions. The variation of protein concentration influences hGH determination. A standard curve with high sensibility for low values and a reduction in the influences of the reaction environment by minimising non-specific binding were obtained by enriching the environment with IgG.

Background. The association between high blood pressure and hypokalemia is usually caused by primary or secondary hyperaldosteronism. Recent studies indicate that\r\nprimary hyperaldosteronism is a much more common cause of hypertension than had been previously demonstrated. Arterial hypertension is often present in hypothyroid patients, but almost never associated with hypokalemia.\r\nCase report. We report the case of a 69 years old male admitted for shortness of breath, inferior limbs edema and fatigue. From his medical history we mention: essential\r\narterial hypertension (for about 25 years), ischaemic coronary artery disease (for 20 years), for which he underwent PTCA (two years ago), atrial fibrillation electrically converted to sinus rhythm (a year a ago). Despite taking four antihypertensive drugs his blood pressure was far from being controlled. Blood analysis revealed an important hypopotasemia (K 2.4mmol/l) and consequently the loop diuretic was replaced with a potassium-sparing diuretic. The measured proved to be unsuccessful and potassium supplements had to be\r\nadded, but with modest results (K 2.94mmol/l). Further specific investigations revealed almost normal levels of aldosteron, low renin, normal cortisol. Associated was a high Thyroid-stimulating hormone (TSH). Computer tomografy (CT) showed bilateral suprarenal glands adenomas.\r\nConsidering the laboratory findings, we interpret the case as a primary hyperaldosteronism and a successful treatment with spironolactone was initiated.

Bronchial carcinoid tumours (typical and atypical carcinoid) are endobronchial tumours that can benefit from both local endobronchial treatment and surgical treatment. Given their relatively good prognosis compared to the other two forms of pulmonary neuroendocrine tumours, there is a current concern about the implications of lymph node involvement as well as the identification of new prognostic factors to shape the treatment of these patients in the future.

Context. Female adnexal tumors of probable Wolffian origin (FATWO) represent very rare borderline ovarian tumors with low malignant potential. Only 15 cases of malignant FATWO are described in the current literature, among which, only 5 are reported as being recurrent. Objective. Due to the rare presentation of the recurrence of the malignant FATWO and the few cases reported in the scientific database, there are no clear therapy recommendations. This paper should help practitioners to choose the best therapy approach. Design. This paper presents the 6th case of malignant recurrent FATWO and will compare all the cases available in the literature. Subjects and Methods. We present a review of the literature comparing the therapeutic approaches and outcomes of all the five cases of recurrent malignant FATWOs. Also, we introduce the case of a stage III Wolffian origin adnexal tumor with multiple recurrences appeared after 6 years of disease free interval. Results. Our case presents the longest survival reported in the literature and underwent most surgical procedures of the recurrences and more than 4 lines of chemotherapy regimens. Conclusions. This paper shows possible therapeutic approaches to be used as example by the practitioners according to the drug availability in their centers.

Background: Similarities between benign and malignant characteristics of enlarged\r\nLN,s are observed on radiological studies.\r\nCase report: We present a case of an inflammatory intramammary lymph node, which\r\non dynamic MRI presented enhancement features suspicious of malignancy. A 45-year-old\r\nfemale presented with a painful palpable lump in the upper outer quadrant of the right breast.\r\nPhysical examination revealed a firm, movable 2 x 1-cm mass in the upper outer quadrant\r\nand erythema of the skin of the right breast. The mammogram showed a well circumscribed\r\ndensity, whith incraesed echogenity on ultrasound and increased Doppler signal. Breast, on\r\ndynamic MRI presented enhancement features suspicious of malignancy and contrast media\r\nwas washed out on delayed phase images. Pathological diagnosis was reactive lymphoid\r\nhyperplasia of intramammary lymph node.

Serotonergic 5HT2A receptors constitute the sole subtype identifiable in platelets, their sole location outside CNS. They may intervene in intra-CNS pathways involved in GHRH and GH release, mainly during sleep. To gain information about such a subtype receptor in GH deficiency and, indirectly, on its role in GH release, studies on the platelets membrane binding sites of labelled LSD were undertaken in dwarf, GH-deficient children, assuming that the platelets sites number is parallel to their number in the brain. Five dwarf (Dw) children (3 boys) aged 7-13, having no signs of puberty, with a peak GH level under 5 ng/ml during ITT, no tumor in the hypothalamic and pituitary area and no previous rhGH therapy were compared with ten normally statured, non-obese children serving as controls (C). Fifty mL of platelet membrane preparation of pooled samples were incubated at 25?C with radioiodinated lysergic acid diethylamide ([125I] LSD) in concentrations of 0.35-3.5 nM/L. The reaction kinetics was followed up within 60 min weekly for 4 weeks. Bmax and Kd were calculated as means of 4 repetitions. Competitive inhibition curves were also drawn by using ketanserin (KET), mianserin (MIA) and cyproheptadin (CYP) in concentrations of 10-4 mM- 1nM/L and the inhibition constant (Ki) was calculated. The results showed that Bmax was (mean ? SEM) 33.0 ? 3.06 fmol/mg protein in C group versus 64.06 ? 13.82 fmol/mg protein in Dw group (F test in covar p<.05). Kd was 0.76? 0.166 nM in C and 2.0? 0.48 nM in Dw (t test p<0.01). The earliest time of 100% binding (Tmin) was 20 min in C and 5 min in Dw groups. Ki in C was 0.1 nM for KET, 18 nM for MIA and <0.1 nM/L for CYP. In Dw children Ki was 1.85 nM for KET, 18 nM for MIA and <0.1 nM for CYP. The results indicated that the number of 5HT2A receptors in platelets was significantly greater in GH-deficient children than in controls, as well as Kd. Tmin indicated an earlier steady state in Dw patients. Ki values pleaded to some extent in favour of the presence of excess 5HT2A receptors. In conclusion, excessive binding of labelled LSD and its inhibition by specific antagonists proves excess of 5HT2A receptors in platelets preparations collected from dwarf children.

Background & Aims. Results from observational studies on low carbohydrate and high protein (LCHP) diets on all-cause mortality and cause-specific mortality are inconsistent. The objective of the present meta-analysis was to investigate LCHP diets and mortality, and cause-specific mortality. Methods. Medline, EMBASE and web of science database were searched for cohort studies published from January 2000 to April 2013. A database was developed on the basis of 7 cohorts from 6 studies, including 279,332 individuals with an average 13.2 years of follow-up. Results. A significantly increased risk of all-cause mortality was observed among those who adhere to LCHP diets [(HR (95% CI): 1.06 (1.04, 1.09); p = 0.001; I2 = 8.2% (p = 0.336)]. However, there were no significant associations between LCHP diets and mortalities from cancer [(HR (95% CI): 1.02 (0.98, 1.05); p = 0.097; I2 = 59.9% (p = 0.041)] and CVD [(HR (95% CI): 1.01 (0.98, 1.03); p = 0.428; I2 = 24.0% (p = 0.0.254)]. Furthermore, a significantly decreased risk of all-cause mortality among those who adhere to high carbohydrate diets [(HR (95% CI): 0.97 (0.94, 0.98); p <0.001; I2 = 5.7% (p = 0.364)] was observed. Conclusion. Present results support that long-term LCHP diets could cause increased mortality of all-cause, while high carbohydrate diets have a protective effect for all-cause mortality. Our analysis provides health professionals with an incentive to pay attention to the adverse effects of LCHP diets on health.

Background. Multiple endocrine neoplasia type 2B (MEN 2B) is a rare hereditary syndrome caused mainly by Met918Thr germline RET mutation and characterized by medullary thyroid carcinoma (MTC), pheochromocytoma (PHEO), and typical phenotypic features. MEN 2B cases previously reported in the literature have variable clinical course. Objectives. We aimed to discuss the characteristics of four MEN 2B cases with unusual presentations,clinical course and review the recent clinical data on MEN2B Results. All patients had de novo M918T mutation and no family history. The mean age of patients was 38.2 years (27-56). Two patients had typical phenotypic features of MEN 2B; the other two patients had no striking phenotypic features. First detected MEN 2B component was MTC in two, intestinal ganglioneuromatosis in one, and PHEO in one of the cases. Bilateral PHEO was detected in all four cases. Conclusions. MEN 2B is a complex syndrome characterized by wide phenotypic variability and different clinical outcomes. To diagnose sporadic MEN 2B cases, genetic testing should be performed in all cases with suspicious clinical features. Although early diagnosis is the main factor that increases life expectancy, some MEN 2B patients with late diagnosis may exhibit a mild clinical course and better prognosis than expected, with effective treatment.

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Objective. Our research investigated the impact of mobile phone distance video education of patients with type II diabetes. This approach was delivered to 100 type 2 diabetes patients based on their cognitive-social factors and metabolic variables. Subjects and Methods. A randomized controlled trial study design was employed. Diabetes education videos were designed and were streamed to the smartphones of the patients. Data were collected from the control (n=50) and experimental (n=50) groups in the first interview, and metabolic control data were recorded. The second interview was held three months after the education process was completed. During this meeting, the survey instrument and the Turkish version of the Multidimensional Diabetes Questionnaire was re-administered to both groups, and metabolic control data were recorded. Results. Following the distance video education, there was a significant decrease in the FPG (1.2 mmol/L) HbA1c (-1.04%), LDL (-0.4 mmol/L) and BMI (-0.7 kg/ m2) values of the experimental group, and their cognitivesocial factors were found to improve in terms of perceiving diabetes. Conclusions. In our study, distance education via mobile phones was an influential approach on cognitivesocial factors and metabolic variables of type 2 diabetes patients.