Theagenion Cancer Hospital

Thessaloníki, Greece

Theagenion Cancer Hospital

Thessaloníki, Greece
Time filter
Source Type

Paschali A.,Theagenion Cancer Hospital | Gnanasegaran G.,Royal Free London NHS Foundation Trust
Indian Journal of Nuclear Medicine | Year: 2017

Bleomycin-induced interstitial lung disease is not a rare complication of treatment and may prove to be fatal if not suspected early in its course. As FDG PET-CT has become an essential clinical tool for interim and end-of-treatment response assessment in oncology, it is important that radiologists/nuclear medicine specialists be aware of the features of this potentially treatable condition so that treatment can be instigated during an early reversible phase before pulmonary damage has occurred. Herein, we report two cases of bleomycin toxicity featuring different patterns on the treatment-response assessment FDG PET-CT scan. © 2017 Indian Journal of Nuclear Medicine.

Paschali A.N.,Theagenion Cancer Hospital | Nekolla S.G.,Ludwig Maximilians University of Munich | Evangelou K.,Athens Medical School | Cook G.J.,St Thomas Hospital | Anagnostopoulos C.D.,Surgery Academy
American Journal of Roentgenology | Year: 2017

OBJECTIVE. The purposes of this article are to review the common biologic features of cancer and coronary artery disease assessed with PET tracers, focusing on those already used in the clinic and those with translational potential, and to discuss the current value and expected contribution of PET in diagnosis, risk stratification, and treatment monitoring. CONCLUSION. PET using a wide variety of radiotracers enhances understanding of pathophysiologic changes shared by cancer and coronary artery disease, helps establish an accurate diagnosis, and aids in prognostic assessment and management decisions. It is likely that with the evolution of therapeutic strategies for blocking the development and progression of both diseases and with the introduction of novel, specific ligands in clinical practice, PET will play an ever stronger role in diagnosis, risk stratification, and monitoring of therapy. © American Roentgen Ray Society.

Pazaitou-Panayiotou K.,Theagenion Cancer Hospital | Michalakis K.,Queen Mary, University of London | Paschke R.,University of Leipzig
Hormone and Metabolic Research | Year: 2012

Thyroid cancer can be associated with thyrotoxicosis caused by Graves' disease, toxic multinodular goiter, or autonomously functioning thyroid adenoma. The objective of this study was to summarize current evidence regarding the association of thyroid cancer and hyperthyroidism, particularly with respect to the type of hyperthyroidism found in some patients, and whether this affects the outcome of the patient. A PubMed search was performed up to August 2011. Articles were identified using combinations of the following keywords/phrases: thyroid cancer, papillary thyroid cancer, follicular thyroid cancer, medullary thyroid cancer, anaplastic thyroid cancer, hyperthyroidism, Graves' disease, autonomous adenoma, toxic thyroid nodule, and toxic multinodular goiter. Original research papers, case reports, and review articles were included. We concluded that the incidence, as well as the prognosis of thyroid cancer associated with hyperthyroidism is a matter of debate. It seems that Graves' disease is associated with larger, multifocal, and potentially more aggressive thyroid cancer than single hot nodules or multinodular toxic goiter. Patients with Graves' and thyroid nodules are at higher risk to develop thyroid cancer compared to patients with diffuse goiter. Every suspicious nodule associated with hyperthyroidism should be evaluated carefully. © Georg Thieme Verlag KG Stuttgart · New York.

Geromichalos G.D.,Theagenion Cancer Hospital | Papadopoulos T.,Karyo Center | Sahpazidou D.,Theagenion Cancer Hospital | Sinakos Z.,Aristotle University of Thessaloniki
Food and Chemical Toxicology | Year: 2014

Crocin, a main constituent of Crocus sativus L (saffron), has been found to inhibit the growth of K-562 human chronic myelogenous leukemia (CML) cells expressing Bcr-Abl protein tyrosine kinase activity. The aim of our study is to investigate the ability of the bioactive saffron's constituents, crocin (CRC) and safranal (SFR), to inhibit the Bcr-Abl protein activity employing an in silico approach, as well as the in vitro effect of these compounds on K-562 growth and gene expression of Bcr-Abl. In silico molecular docking studies revealed that mostly SFR can be attached to Bcr-Abl protein, positioned inside the protein's binding cavity at the same place with the drug used in the treatment of CML, imatinib mesylate (IM). The predicted polar interactions and hydrophobic contacts constructing a hydrophobic cavity inside the active site, explain the observed inhibitory activity. Cytotoxicity experiments showed that SFR and CRC mediate cytotoxic response to K562 cells. In vitro studies on the expression of Bcr-Abl gene revealed that SFR and in a lesser degree IM inhibited the expression of the gene, while in contrast CRC induced an increase. The ultimate goal was to evaluate the existence of a potential antitumor activity of saffron's constituents SFR and CRC. © 2014 Elsevier Ltd.

Pontiki E.,Aristotle University of Thessaloniki | Hadjipavlou-Litina D.,Aristotle University of Thessaloniki | Litinas K.,Aristotle University of Thessaloniki | Geromichalos G.,Theagenion Cancer Hospital
Molecules | Year: 2014

Cinnamic acids have been identified as interesting compounds with antioxidant, anti-inflammatory and cytotoxic properties. In the present study, simple cinnamic acids were synthesized by Knoevenagel condensation reactions and evaluated for the above biological activities. Compound 4ii proved to be the most potent LOX inhibitor. Phenylsubstituted acids showed better inhibitory activity against soybean LOX, and it must be noted that compounds 4i and 3i with higher lipophilicity values resulted less active than compounds 2i and 1i. The compounds have shown very good activity in different antioxidant assays. The antitumor properties of these derivatives have been assessed by their 1/IC50 inhibitory values in the proliferation of HT-29, A-549, OAW-42, MDA-MB-231, HeLa and MRC-5 normal cell lines. The compounds presented low antitumor activity considering the IC50 values attained for the cell lines, with the exception of compound 4ii. Molecular docking studies were carried out on cinnamic acid derivative 4ii and were found to be in accordance with our experimental biological results.

Sahpazidou D.,Theagenion Cancer Hospital | Geromichalos G.D.,Theagenion Cancer Hospital | Stagos D.,University of Thessaly | Apostolou A.,Agricultural University of Athens | And 6 more authors.
Toxicology Letters | Year: 2014

A major part of the wineries' wastes is composed of grape stems which are discarded mainly in open fields and cause environmental problems due mainly to their high polyphenolic content. The grape stem extracts' use as a source of high added value polyphenols presents great interest because this combines a profitable venture with environmental protection close to wine-producing zones. In the present study, at first, the Total Polyphenolic Content (TPC) and the polyphenolic composition of grape stem extracts from four different Greek Vitis vinifera varieties were determined by HPLC methods. Afterwards, the grape stem extracts were examined for their ability to inhibit growth of colon (HT29), breast (MCF-7 and MDA-MB-23), renal (786-0 and Caki-1) and thyroid (K1) cancer cells. The cancer cells were exposed to the extracts for 72h and the effects on cell growth were evaluated using the SRB assay. The results indicated that all extracts inhibited cell proliferation, with IC50 values of 121-230μg/ml (MCF-7), 121-184μg/ml (MDA-MD-23), 175-309μg/ml (HT29), 159-314μg/ml (K1), 180-225μg/ml (786-0) and 134->400μg/ml (Caki-1). This is the first study presenting the inhibitory activity of grape stem extracts against growth of colon, breast, renal and thyroid cancer cells. © 2014 Elsevier Ireland Ltd.

Banti C.N.,University of Ioannina | Kyros L.,University of Ioannina | Geromichalos G.D.,Theagenion Cancer Hospital | Kourkoumelis N.,University of Ioannina | And 2 more authors.
European Journal of Medicinal Chemistry | Year: 2014

The new mixed ligand silver(I) complex of formula [AgI(TPP) 2(MBZT)] (1) was obtained by reacting 2-mercapto-benzothiazole (MBZT) with triphenylphosphine (TPP). The complex was characterized by m.p., vibrational spectroscopy (FT-IR), 1H NMR, UV-vis, ESI-MS spectroscopic techniques and its structure was confirmed by X-ray crystallography. Mixed ligand complexes of silver(I) iodide with thiones and phosphines are very rare in the literature and to the best of our knowledge compound 1 is the first of this kind exhibiting significant biological effects. Complex 1 was evaluated for its in vitro cytotoxic activity (cell viability) under irradiation with UV light and without irradiation against human cancer cell lines: MCF-7 (breast, ER positive), MDA-MB-231 (breast, ER negative), Caki-1 (renal), A549 (lung), OAW-42 (ovarian), HeLa (cervical) and additionally against the normal human lung cell line MRC-5 (normal human fetal lung fibroblast cells) and normal immortalized human mammary gland epithelial cell line (MTSV17) with SRB assay. The results showed that 1 mediates a strong cytotoxic response to the tested normal and cancer cell lines. It exhibits equal activity against MDA-MB-231 cells where estrogen receptors (ERs) are devoid with the one against MCF-7 where ERs are present. Molecular docking studies have shown that 1 is docked in the different pocket than that of the ERs modulators. The binding affinity of 1 towards the intracellular molecules DNA and lipoxygenase (LOX) was studied for the evaluation of the mechanism of its cytostasis. The binding constant (Kb) of 1 towards CT-DNA was calculated by UV-Vis and fluorescent spectra suggesting intercalation or electrostatic interactions of 1 into DNA. Docking studies on DNA-complex interactions confirm the binding of 1. Moreover, the influence of complex 1 on the catalytic peroxidation of linoleic acid to hydroperoxylinoleic acid by the enzyme lipoxygenase (LOX) was kinetically and theoretically studied. In addition, since the deactivation of cisplatin caused by glutathione, seems to be an important determinant of its cytotoxic effects, the reaction of 1 with glutathione (GSH) was investigated by UV-absorption spectroscopy.© 2014 Elsevier Masson SAS. All rights reserved.

Onal C.,Baskent University | Li Y.X.,Peking Union Medical College | Miller R.C.,Mayo Medical School | Poortmans P.,Institute Verbeeten | And 6 more authors.
Annals of Oncology | Year: 2011

Background: This study analyzed prognostic factors and treatment outcomes of primary thyroid lymphoma. Patients and Methods: Data were retrospectively collected for 87 patients (53 stage I and 34 stage II) with median age 65 years. Fifty-two patients were treated with single modality (31 with chemotherapy alone and 21 with radiotherapy alone) and 35 with combined modality treatment. Median follow-up was 51 months. Results: Sixty patients had aggressive lymphoma and 27 had indolent lymphoma. The 5-and 10-year overall survival (OS) rates were 74% and 71%, respectively, and the disease-free survival (DFS) rates were 68% and 64%. Univariate analysis revealed that age, tumor size, stage, lymph node involvement, B symptoms, and treatment modality were prognostic factors for OS, DFS, and local control (LC). Patients with thyroiditis had significantly better LC rates. In multivariate analysis, OS was influenced by age, B symptoms, lymph node involvement, and tumor size, whereas DFS and LC were influenced by B symptoms and tumor size. Compared with single modality treatment, patients treated with combined modality had better 5-year OS, DFS, and LC. Conclusions: Combined modality leads to an excellent prognosis for patients with aggressive lymphoma but does not improve OS and LC in patients with indolent lymphoma. © The Author 2010. Published by Oxford University Press on behalf of the European Society for Medical Oncology. All rights reserved.

Pazaitou-Panayiotou K.,Theagenion Cancer Hospital | Polyzos S.A.,Aristotle University of Thessaloniki | Mantzoros C.S.,Beth Israel Deaconess Medical Center
Obesity Reviews | Year: 2013

The incidence of thyroid cancer has been rising over the past few decades along with a parallel increase in obesity. Observational studies have provided evidence for a potential association between the two. By contrast, clinical data for a link between type 2 diabetes mellitus, a condition strongly associated with obesity, and thyroid cancer are limited and largely not supportive of such an association. Obesity leads to hypoadiponectinemia, a pro-inflammatory state, and insulin resistance, which, in turn, leads to high circulating insulin and insulin-like growth factor-1 levels, thereby possibly increasing the risk for thyroid cancer. Thus, insulin resistance possibly plays a pivotal role in underlying the observed association between obesity and thyroid cancer, potentially leading to the development and/or progression of thyroid cancer, through its interconnections with other factors including insulin-like growth factor-1, adipocytokines/cytokines and thyroid-stimulating hormone. In this review, epidemiological and clinical evidence and potential mechanisms underlying the proposed association between obesity and thyroid cancer risk are reviewed. If the association between obesity and thyroid cancer demonstrated in observational studies proves to be causal, targeting obesity (and/or downstream mediators of risk) could be of importance in the prevention and management of thyroid cancer. © 2013 International Association for the Study of Obesity.

Geromichalos G.D.,Theagenion Cancer Hospital | Lamari F.N.,University of Patras | Papandreou M.A.,University of Patras | Trafalis D.T.,National and Kapodistrian University of Athens | And 3 more authors.
Journal of Agricultural and Food Chemistry | Year: 2012

Inhibitors of acetylcholine breakdown by acetylcholinesterase (AChE) constitute the main therapeutic modality for Alzheimer's disease. In the search for natural products with inhibitory action on AChE, this study investigated the activity of saffron extract and its constituents by in vitro enzymatic and molecular docking studies. Saffron has been used in traditional medicine against Alzheimer's disease. Saffron extract showed moderate AChE inhibitory activity (up to 30%), but IC 50 values of crocetin, dimethylcrocetin, and safranal were 96.33, 107.1, and 21.09 μM, respectively. Kinetic analysis showed mixed-type inhibition, which was verified by in silico docking studies. Safranal interacts only with the binding site of the AChE, but crocetin and dimethylcrocetin bind simultaneously to the catalytic and peripheral anionic sites. These results reinforce previous findings about the beneficial action of saffron against Alzheimer's disease and may be of value for the development of novel therapeutic agents based on carotenoid-based dual binding inhibitors. © 2012 American Chemical Society.

Loading Theagenion Cancer Hospital collaborators
Loading Theagenion Cancer Hospital collaborators