ACTA ENDOCRINOLOGICA (BUC)

The International Journal of Romanian Society of Endocrinology / Registered in 1938

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Year Volume Issue First page
10.4183/aeb.
Author
Title
Abstract/Title
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  • General Endocrinology

    Cobilinschi C, Tincu RC, Baetu AE, Deaconu CO, Totan A, Rusu A, Neagu PT, Grintescu IM

    Endocrine Disturbances Induced by Low-Dose Organophosphate Exposure in Male Wistar Rats

    Acta Endo (Buc) 2021 17(2): 177-185 doi: 10.4183/aeb.2021.177

    Abstract
    Background. Organophosphate exposure induces many endocrine effects. Aim. In this study we observed the effects of acute stress induced by cholinesterase inhibition on the main hormonal axes. Materials and Methods. We included thirteen weanling Wistar rats that were subjected to organophosphate exposure. They were first tested for baseline levels of butyrylcholinesterase, cortisol, free triiodothyronine, thyroxine, thyroid-stimulating hormone and prolactin. Secondly, chlorpyrifos was administered. Next samples were taken to determine the level of all the above-mentioned parameters. Results. Butyrylcholinesterase was significantly decreased after exposure (p<0.001). Cortisol levels were significantly higher after clorpyrifos administration (358.75±43 vs. 241.2±35 nmoL/L)(p<0.01). Although prolactin had a growing trend (450.25±24.65 vs. 423±43.4 uI/mL), the results were not statistically significant. Both free triiodothyronine and thyroxine were significantly higher after exposure. Surprisingly, thyroid-stimulating hormone level almost doubled after exposure with high statistical significance (p<0.001), suggesting a central stimulation of thyroid axis. Butyrylcholinesterase level was proportional with thyroid-stimulating hormone level (p=0.02) and thyroxine level was inversely correlated to the cortisol level (p=0.01). Acute cholinesterase inhibition may induce high levels of cortisol, free triiodothyronine, thyroxine and thyroid-stimulating hormone. From our knowledge this is the first study dedicated to the assessment of acute changes of hormonal status in weanling animals after low-dose organophosphate exposure. Conclusion. Acute cholinesterase inhibition may cause acute phase hormonal disturbances specific to shocked patients.
  • Actualities in medicine

    Baetu M, Dobrescu R

    Novel Markers for Early Diagnosis and Prognostic Classification in Medullary Thyroid Carcinoma

    Acta Endo (Buc) 2017 13(4): 519-522 doi: 10.4183/aeb.2017.519

    Abstract
    Medullary thyroid carcinoma is a neuroendocrine tumour of the parafollicular C cells of the thyroid gland. It is an aggressive tumor that can be cured only by complete resection of the thyroid tumour and any local and regional metastases. Thus, the discovery of novel diagnostic and prognostic markers is very important for early diagnosis and correct management, in order for the survival rates to rise. New research has emphasized the potential role of various genes, serum and immunohistochemical markers, as well as potential targets for therapeutic agents. The calcium stimulated calcitonin test has been recently reintroduced in clinical practice, and current medullary thyroid carcinoma guidelines encourage laboratories to set their own criteria defining reference ranges for elevated serum basal and stimulated calcitonin levels.