Homeostasis. The Ancient Greek Origin of a Modern Scientific Principle

Theano D. Kontopoulou, Spyros G. Marketos

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Many medical terms have a long history. They are first introduced as a concept and later acquire their proper name. In this article we trace the origin of the term homeostasis, which in modern medicine means the complex balance and the constancy of all aspects of body function and the coordinated regulation of its component fluids and cells…

Oral bisphosphonate adverse effects in 849 patients with metabolic bone diseases

Athanasios D. Anastasilakis, Dimitrios G. Goulis, Marina Kita, Avraam Avramidis

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OBJECTIVE: Bisphosphonates are potent antiresorptive agents used for a spectrum of metabolic bone diseases. The aim of this study was to compare the adverse effects (AEs) of alendronate, etidronate and risedronate prescribed in a non-selected population, attending a single institution on an outpatient basis…

Novel syndrome of four-limb proximal fragility fractures associated with HIV infection, cholestatic liver failure, and histiocytic infiltration of bone marrow

Run Yu, Nicholas N. Nissen, Bonnie Balzer, Xuemo Fan

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We report a syndrome of four-limb proximal fragility fractures associated with HIV infection, cholestatic liver failure, and histiocytic infiltration of bone marrow in a 40-year-old African American man. The patient presented with multiple fractures in the proximal humeri …

Corticotropin-releasing factor (CRF) system localization in human fetal heart

Efterpi Chouridou, Maria Lambropoulou, Maria Koureta, Christina Zarouchlioti, Ioanna Balgouranidou, Evangelia Nena, Nikolaos Papadopoulos, Ekaterini Chatzaki

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OBJECTIVE: The corticotropin-releasing factor (CRF) family consists of the neuropeptides CRF, Ucn I, II and III and the binding sites CRFR1, CRFR2 and CRF-BP. It regulates stress response and the homeostasis of an organism. In this study, we examined the presence of the CRF system in the human hearts of normal and pathological fetuses. DESIGN: Heart tissues from 40 archival human fetuses were divided …

Pituitary insufficiency. Diagnosis masked by a toxic thyroid adenoma

Maria Alevizaki, Lia-Angela Moulopoulos, Emily Mantzos, Demetrios A. Koutras

A patient with undiagnosed pituitary insufficiency who also had a toxic thyroid adenoma is presented. The T3 secreted by the adenoma apparently corrected the secondary thyroid failure, but also aggravated the secondary adrenal failure and almost precipitated adrenal crisis. The diagnostic work-up in such an unusual co-existence is discussed…

The alteration of serum soluble CD40 ligand levels in overt and subclinical hypothyroidism

Baris Akinci, Abdurrahman Comlekci, Serkan Yener, Tevfik Demir, Firat Bayraktar, Faize Yuksel, Sena Yesil

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OBJECTIVE: There is controversy as to whether hypothyroidism increases cardiovascular risk. The effect of levothyroxine on the cardiovascular risk profile is also unclear. Recent studies suggest that there is evidence of inflammation and endothelial dysfunction in hypothyroidism. Soluble CD40 ligand (sCD40L) is a protein expressed mainly by activated platelets …

Assessment of salivary free cortisol levels by liquid chromatography with tandem mass spectrometry (LC-MS/MS) in patients treated with mitotane

Cinzia Carrozza, Rosa Lapolla, Jacopo Gervasoni, Carlo Antonio Rota, Pietro Locantore, Alfredo Pontecorvi, Cecilia Zuppi, Silvia Persichilli

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OBJECTIVE: Mitotane is an adrenocytolytic agent used in adrenocortical carcinoma, inducing adrenal insufficiency, requiring replacement treatment. Such therapy is not easy to monitor because of mitotane interference. Salivary cortisol reflects a free fraction of plasma …

Development and validation of an osteoporosis treatment questionnaire (OSTREQ) evaluating physicians’ criteria in the choice of treatment

Polyzois Makras, Antonios Galanos, Stavroula Rizou, Athanasios D. Anastasilakis, George P. Lyritis

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OBJECTIVE: This article describes the development and validation of the osteoporosis treatment questionnaire (OSTREQ), which is a physician-reported outcome tool aiming to evaluate physicians’ criteria in the choice of osteoporosis treatment. DESIGN: The questionnaire –named OSTREQ– consisting of 17 questions that were divided into eight sections …

Testicular leydig cell tumor presenting as primary infertility

Athina Markou, Justin Vale, Bhumita Vadgama, Marjori Walker, Stephen Franks

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A 29-year old male and his wife presented with an 18 month history of primary infertility. History and initial investigations suggested no major female pathologic component but a semen analysis revealed azoospermia. There was no history of any sexual dysfunction and neither partner was receiving any medication …

Enhanced oxidative stress with a gradient between plasma and muscle interstitial fluid in patients with end stage renal failure on hemodialysis

Ioannis Karamouzis, Dimitrios Grekas, Michael Karamouzis, Athanasios Triantos, Svetla Vasileva-Staikova, Dimitrios Kovachev, Afroditi Dimitriadou

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The concentration of 8-iso-prostaglandin-F2· (8-iso-PGF in biological fluids has been considered as the most reliable biochemical index of the lipid peroxidation and oxidative stress in patients with several pathological conditions including end stage renal failure …

What causes a prolactinoma to be aggressive or to become a pituitary carcinoma?

Jana Phillips, Honey E. East, Sarah E. French, Eugen Melcescu, Robert D. Hamilton, William C. Nicholas, Jonathan F. Fratkin, Andrew D. Parent, Gustavo Luzardo, Christian A. Koch

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INTRODUCTION: Malignant prolactinoma is an exceedingly rare endocrine tumor and cannot be diagnosed on histological grounds alone. Similarly to other neuroendocrine tumors such as pheochromocytoma, the mitoses index, Ki-67, p53, and others are utilized in helping understand …

Defining optimal vitamin D cut-off levels: Τhe role of parathyroid hormone concentrations

Spyridon N. Karras, William B.Grant, Declan P. Naughton, Kalliopi Kotsa

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We read with interest the recent article by Katrinaki et al. The authors report on cross-sectional values of serum 25-hydroxyvitamin D [25(OH)D] concentrations from a large Mediterranean cohort in Crete, Greece …

Fibrocalculous pancreatic diabetes in a patient residing

Ioannis Habeos, Venetsana Kyriazopoulou, Dionysios Chartoumpekis, Agathoklis Psyrogiannis

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A 40-year old male residing in the Mediterranean region and afflicted with chronic pancreatitis and diabetes is presented. This is a case of chronic calcific non-alcoholic pancreatitis with characteristic intraductal calculi on abdominal X-ray. Five years following the initial episode of pancreatitis …

Evaluation of markers of inflammation, insulin resistance and endothelial dysfunction in children at risk for overweight

Gulcin Akinci, Baris Akinci, Senol Coskun, Petek Bayindir, Zeliha Hekimsoy, Bilgin Ozmen

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Objective: Childhood obesity is associated with impaired endothelial function, insulin resistance and inflammation. Being at risk for overweight has been defined as having a body mass index (BMI) between the 85th and 94th percentile for age and sex. In this study, we looked for features linked to cardiovascular risk in children who are at risk for overweight …

Variations of urinary iodine during the first trimester of pregnancy in an iodine-replete area. Comparison with non-pregnant women

Atieh Amouzegar, Fereidoun Azizi

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Objective: To assess variations of urinary iodine concentration (UIC) during a 4-week period among pregnant and non-pregnant women in an iodine-replete area. Design: Pregnant (in their first trimester of pregnancy) and non-pregnant women referred to two maternity hospitals in Tehran were consecutively recruited from September 2005 to March 2006 …

Serum kisspeptin concentrations are negatively correlated with body mass index in adolescents with anorexia nervosa and amenorrhea

Flora Bacopoulou, George I. Lambrou, Maria-Evangelia Rodanaki,Evgenia Stergioti, Vasiliki Efthymiou, Efthymios Deligeoroglou, Sophia L. Markantonis

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OBJECTIVE: To measure, for the first time, serum kisspeptin concentrations in adolescent females with anorexia nervosa (AN) and associated amenorrhea, and investigate potential correlations of kisspeptin with anthropometric, bone and hormonal data. DESIGN: Setting: University Adolescent Medicine Center. Participants: Females aged 12-20 years with typical or atypical AN (based on DSM-5 diagnostic criteria) and controls …

Of Temples and Plane Trees: the Hippocratic Legacy as Collective Memory

Gerasimos P. Sykiotis, George D. Kalliolias, Christos Terezis, Athanasios G. Papavassiliou

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In the homeland of Hippocrates, the study of the history and philosophy of medicine is remarkably infrequent among medical practitioners. It is excluded from the curricula of the majority of medical schools and from the hobbies and pastimes of most physicians and medical students…

A novel, non-functional, COL1A1 polymorphism is not associated with lumbar disk disease in young male Greek subjects unlike that of the Sp1 site

Thalia Bei, Constantinos Tilkeridis, Stavros Garantziotis, Sosipatros A. Boikos, Konstantinos Kazakos, Constantinos Simopoulos, Constantine A. Stratakis

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OBJECTIVE: We recently reported the association of the Sp1 site polymorphism of the COL1A1 gene with lumbar disk disease (LDD). In the present study we searched for a different polymorphism of the COL1A1 gene (which is usually not in linkage disequilibrium with the Sp1 site) in subjects with LDD…

Laparoscopic vs. open abdominal surgery in male pigs: Marked differences in cortisol and catecholamine response depending on the size of surgical incision

Angeliki Krikri, Vasileios Alexopoulos, Emmanouil Zoumakis, Paraskevas Katsaronis, Evangelos Balafas, Gregory Kouraklis, Panagiotis E. Karayannacos, George P. Chrousos, Gregory Skalkeas

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OBJECTIVE: Minimally invasive operations, such as laparoscopic cholecystectomy and adrenalectomy, result in a more rapid recovery of normal function, less physiological disturbances and less stress to the organism than similar open operations. The purpose of this study was to determine the stress response associated …

Novel insights into the molecular mechanisms underlying generalized glucocorticoid resistance and hypersensitivity syndromes

Nicolas C. Nicolaides, Evangelia Charmandari

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Glucocorticoids play a fundamental role in many physiologic functions and contribute substantially to the achievement of homeostasis. These pleiotropic glucocorticoid actions are mediated by a ubiquitously expressed transcription factor, the human glucocorticoid receptor (hGR), which may influence the transcription …

On the centenary of the term

Effie Poulakou-Rebelakou, Costas Tsiamis, Spyros G. Marketos

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In June of 2005 the term hormone completed a life span of one century. The word that Ernest Henry Starling included in one of his four lectures to the Royal Society of Physicians of London, given in June 1905, definitively established the permanent representation in terminology for the products secreted by the endocrine glands…

Levonorgestrel-releasing intrauterine system vs. endometrial thermal ablation for menorrhagia

Theodoros D. Theodoridis, Leonidas Zepiridis, Menelaos Zafrakas, Grigoris Grimbizis, Antonios Tantsis, Dimitra Kyrou, John N. Bontis

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OBJECTIVE: To evaluate the efficacy of a Levonorgestrel-releasing Intrauterine System (LNG-IUS) in controlling menorrhagia in comparison with endometrial thermal rollerball ablation. DESIGN: Seventy-nine consecutive patients with menorrhagia underwent either LNG-IUS insertion (n=42) or hysteroscopical endometrial thermal rollerball ablation (n=37) in a prospective, observational, comparative study …

Frax score calculations in postmenopausal women with subclinical hypothyroidism

Snezana Polovina, Vera Popovic, Leonidas Duntas, Natasa Milic, Dragan Micic

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OBJECTIVE: The aim of our study was to evaluate the relationship between the elevated TSH and fracture risk in postmenopausal women with subclinical hypothyroidism for evaluation of individuals with a high risk for osteoporotic fractures. DESIGN: FRAX score calculation (10-year estimated risk for bone fracture) …

The adrenal gland microenvironment in health, disease and during regeneration

Waldemar Kanczkowski, Mariko Sue, Stefan R. Bornstein

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The adrenal gland is a key component of the stress system in the human body. Multiple direct and paracrine interactions between different cell types and their progenitors take place within the adrenal gland microenvironment. These unique interactions are supported by high vascularization and the adrenal cortex extracellular matrix. Alterations in the adrenal gland microenvironment are known to influence the progression of several pathological conditions, such as obesity and sepsis, and to be influenced …

The ancient and medieval Greek writer’s perceptions concerning the relationship between sexual characteristics and testicular volume

Athanasios Diamandopoulos, Pavlos Goudas, Demetra Patsy

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Physicians and scholars of antiquity were well aware that the function of the testicles of humans and animals was not restricted to the production of sperm alone but that it was directly related to sexuality and secondary sexual characteristics. This concept was the natural conclusion of their observations on the macroscopical results of the removal of testicular tissue …