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Giakoumaki M, Lambrou GI, Vlachodimitropoulos D, Tagka A, Vitsos A, Kyriazi M, Dimakopoulou A, Anagnostou V, Karasmani M, Deli H, Grigoropoulos A, Karalis E, Rallis MC, Black HS. Type I Diabetes Mellitus Suppresses Experimental Skin Carcinogenesis. Cancers (Basel) 2024; 16:1507. [PMID: 38672589 PMCID: PMC11048394 DOI: 10.3390/cancers16081507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/07/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
This study explores the previously uncharted territory of the effects of ultraviolet (UV) radiation on diabetic skin, compared to its well-documented impact on normal skin, particularly focusing on carcinogenesis and aging. Employing hairless SKH-hr2, Type 1 and 2 diabetic, and nondiabetic male mice, the research subjected these to UV radiation thrice weekly for eight months. The investigation included comprehensive assessments of photoaging and photocarcinogenesis in diabetic versus normal skin, measuring factors such as hydration, trans-epidermal water loss, elasticity, skin thickness, melanin, sebum content, stratum corneum exfoliation and body weight, alongside photo documentation. Additionally, oxidative stress and the presence of hydrophilic antioxidants (uric acid and glutathione) in the stratum corneum were evaluated. Histopathological examination post-sacrifice provided insights into the morphological changes. Findings reveal that under UV exposure, Type 1 diabetic skin showed heightened dehydration, thinning, and signs of accelerated aging. Remarkably, Type 1 diabetic mice did not develop squamous cell carcinoma or pigmented nevi, contrary to normal and Type 2 diabetic skin. This unexpected resistance to UV-induced skin cancers in Type 1 diabetic skin prompts a crucial need for further research to uncover the underlying mechanisms providing this resistance.
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Affiliation(s)
- Maria Giakoumaki
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, School of Health Sciences, Medical School, National and Kapodistrian University of Athens, Thivon & Levaeias 8, Goudi, 11527 Athens, Greece;
- Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
| | - Dimitrios Vlachodimitropoulos
- Department of Forensic Medicine and Toxicology, Medical School, National and Kapodistrian University of Athens, 75, Mikras Asias Street, 11527 Athens, Greece;
| | - Anna Tagka
- First Department of Dermatology and Venereology, ‘Andreas Syggros” Hospital, School of Medicine, National and Kapodistrian University of Athens, Ionos Dragoumi 5, 11621 Athens, Greece;
| | - Andreas Vitsos
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Maria Kyriazi
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Aggeliki Dimakopoulou
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Vasiliki Anagnostou
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Marina Karasmani
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Heleni Deli
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Andreas Grigoropoulos
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Evangelos Karalis
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Michail Christou Rallis
- Division of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Panepistimiopolis, 15784 Athens, Greece; (M.G.); (A.V.); (M.K.); (A.D.); (V.A.); (M.K.); (H.D.); (A.G.); (E.K.)
| | - Homer S. Black
- Department of Dermatology, Baylor College of Medicine, Houston, TX 77030, USA;
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Ogbodo AK, Mustafov D, Arora M, Lambrou GI, Braoudaki M, Siddiqui SS. Analysis of SIGLEC12 expression, immunomodulation and prognostic value in renal cancer using multiomic databases. Heliyon 2024; 10:e24286. [PMID: 38268823 PMCID: PMC10803920 DOI: 10.1016/j.heliyon.2024.e24286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Revised: 11/30/2023] [Accepted: 01/05/2024] [Indexed: 01/26/2024] Open
Abstract
Siglecs belong to a family of immune regulatory receptors predominantly found on hematopoietic cells. They interact with Sia, resulting in the activation or inhibition of the immune response. Previous reports have suggested that the SIGLEC12 gene, which encodes the Siglec-XII protein, is expressed in the epithelial tissues and upregulated in carcinomas. However, studies deciphering the role of Siglec-XII in renal cancer (RC) are still unavailable, and here we provide insights on this question. We conducted expression analysis using the Human Protein Atlas and UALCAN databases. The impact of SIGLEC12 on RC prognosis was determined using the KM plotter, and an assessment of immune infiltration with SIGLEC12 was performed using the TIMER database. GSEA was conducted to identify the pathways affected by SIGLEC12. Finally, using GeneMania, we identified Siglec-XII interacting proteins. Our findings indicated that macrophages express SIGLEC12 in the kidney. Furthermore, we hypothesize that Siglec-XII expression might be involved in the increase of primary RC, but this effect may not be dependent on the age of the patient. In the tumour microenvironment, oncogenic pathways appeared to be upregulated by SIGLEC12. Similarly, our analysis suggested that SIGLEC12-related kidney renal papillary cell carcinomas may be more suitable for targeted immunotherapy, such as CTLA-4 and PD-1/PD-L1 inhibitors. These preliminary results suggested that high expression of SIGLEC12 is associated with poor prognosis for RC. Future studies to assess its clinical utility are necessitated.
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Affiliation(s)
- Amobichukwu K. Ogbodo
- School of Life and Medical Sciences, University of Hertfordshire, College Lane Campus, Hatfield AL10 9AB, United Kingdom
- #Current Address: Nuffield Department of Population Health, University of Oxford, Richard Doll Building, Old Road Campus, Oxford OX3 7LF, United Kingdom
| | - Denis Mustafov
- School of Life and Medical Sciences, University of Hertfordshire, College Lane Campus, Hatfield AL10 9AB, United Kingdom
- College of Health, Medicine, and Life Science, Brunel University London UB8 3PH, United Kingdom
| | - Mohit Arora
- Department of Biochemistry, All India Institute of Medical Sciences, New Delhi 110029, India
| | - George I. Lambrou
- Choremeio Research Laboratory, First Department of Paediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
| | - Maria Braoudaki
- School of Life and Medical Sciences, University of Hertfordshire, College Lane Campus, Hatfield AL10 9AB, United Kingdom
| | - Shoib S. Siddiqui
- School of Life and Medical Sciences, University of Hertfordshire, College Lane Campus, Hatfield AL10 9AB, United Kingdom
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Sarridou DG, Mouratoglou SA, Mitchell JB, Cox F, Boutou A, Braoudaki M, Lambrou GI, Konstantinidou M, Argiriadou H, Walker CPR. Post-Operative Thoracic Epidural Analgesia and Incidence of Major Complications according to Specific Safety Standardized Documentation: A Large Retrospective Dual Center Experience. J Pers Med 2023; 13:1672. [PMID: 38138898 PMCID: PMC10744802 DOI: 10.3390/jpm13121672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/20/2023] [Accepted: 11/27/2023] [Indexed: 12/24/2023] Open
Abstract
(1) Background: Thoracic epidural analgesia is considered the gold standard in post-operative pain management following thoracic surgery. This study was designed to explore the safety of thoracic epidural analgesia and to quantify the incidence of its post-operative complications and side effects in patients undergoing thoracotomy for major surgery, such as resection of lung malignancies and lung transplantation. (2) Methods: This is a retrospective, dual-center observational study including patients that underwent major thoracic surgery including lung transplantation and received concurrent placement of thoracic epidural catheters for post-operative analgesia. An electronic system of referral and documentation of complications was used, and information was retrieved from our electronic critical care charting system. (3) Results: In total, 1145 patients were included in the study. None of the patients suffered any major complication, including hematoma, abscess, or permanent nerve damage. (4) Conclusions: the present study showed that in experienced centers, post-operative epidural analgesia in patients with thoracotomy is a safe technique, manifesting minimal, none-serious complications.
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Affiliation(s)
- Despoina G. Sarridou
- Department of Anesthesia and Intensive Care, AHEPA University Hospital of Thessaloniki, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.A.M.); (H.A.)
- Department of Anesthesia and Intensive Care, The Royal Brompton and Harefield Hospital NHS, Middlesex, London UB9 6JH, UK; (J.B.M.); (F.C.)
| | - Sophia Anastasia Mouratoglou
- Department of Anesthesia and Intensive Care, AHEPA University Hospital of Thessaloniki, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.A.M.); (H.A.)
| | - Jeremy B. Mitchell
- Department of Anesthesia and Intensive Care, The Royal Brompton and Harefield Hospital NHS, Middlesex, London UB9 6JH, UK; (J.B.M.); (F.C.)
| | - Felicia Cox
- Department of Anesthesia and Intensive Care, The Royal Brompton and Harefield Hospital NHS, Middlesex, London UB9 6JH, UK; (J.B.M.); (F.C.)
| | - Afroditi Boutou
- Respiratory Medicine Department, Hippokration Hospital, 54942 Thessaloniki, Greece;
| | - Maria Braoudaki
- Department of Clinical, Pharmaceutical and Biological Science, School of Life and Medical Sciences, University of Hertfordshire, Hertfordshire AL10 9AB, UK;
| | - George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Maria Konstantinidou
- Department of Respiratory Medicine, G. Papanikolaou General Hospital, 57010 Thessaloniki, Greece;
| | - Helena Argiriadou
- Department of Anesthesia and Intensive Care, AHEPA University Hospital of Thessaloniki, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (S.A.M.); (H.A.)
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Vezakis IA, Lambrou GI, Kyritsi A, Tagka A, Chatziioannou A, Matsopoulos GK. Detecting Skin Reactions in Epicutaneous Patch Testing with Deep Learning: An Evaluation of Pre-Processing and Modality Performance. Bioengineering (Basel) 2023; 10:924. [PMID: 37627809 PMCID: PMC10451716 DOI: 10.3390/bioengineering10080924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/17/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
Epicutaneous patch testing is a well-established diagnostic method for identifying substances that may cause Allergic Contact Dermatitis (ACD), a common skin condition caused by exposure to environmental allergens. While the patch test remains the gold standard for identifying allergens, it is prone to observer bias and consumes valuable human resources. Deep learning models can be employed to address this challenge. In this study, we collected a dataset of 1579 multi-modal skin images from 200 patients using the Antera 3D® camera. We then investigated the feasibility of using a deep learning classifier for automating the identification of the allergens causing ACD. We propose a deep learning approach that utilizes a context-retaining pre-processing technique to improve the accuracy of the classifier. In addition, we find promise in the combination of the color image and false-color map of hemoglobin concentration to improve diagnostic accuracy. Our results showed that this approach can potentially achieve more than 86% recall and 94% specificity in identifying skin reactions, and contribute to faster and more accurate diagnosis while reducing clinician workload.
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Affiliation(s)
- Ioannis A. Vezakis
- Biomedical Engineering Laboratory, School of Electrical & Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece; (I.A.V.); (G.I.L.)
| | - George I. Lambrou
- Biomedical Engineering Laboratory, School of Electrical & Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece; (I.A.V.); (G.I.L.)
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, 8 Thivon & Levadeias St., 11527 Athens, Greece
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, 8 Thivon & Levadeias St., 11527 Athens, Greece
| | - Aikaterini Kyritsi
- First Department of Dermatology and Venereology, “Andreas Syggros” Hospital, National and Kapodistrian University of Athens, 5 Ionos Dragoumi St., 11621 Athens, Greece; (A.K.); (A.T.); (A.C.)
| | - Anna Tagka
- First Department of Dermatology and Venereology, “Andreas Syggros” Hospital, National and Kapodistrian University of Athens, 5 Ionos Dragoumi St., 11621 Athens, Greece; (A.K.); (A.T.); (A.C.)
| | - Argyro Chatziioannou
- First Department of Dermatology and Venereology, “Andreas Syggros” Hospital, National and Kapodistrian University of Athens, 5 Ionos Dragoumi St., 11621 Athens, Greece; (A.K.); (A.T.); (A.C.)
| | - George K. Matsopoulos
- Biomedical Engineering Laboratory, School of Electrical & Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece; (I.A.V.); (G.I.L.)
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Iliopoulos ID, Lianou I, Kaspiris A, Ntourantonis D, Arachoviti C, Zafeiris CP, Lambrou GI, Chronopoulos E. Impact of COVID-19 Pandemic on Fragility Fractures of the Hip: An Interrupted Time-Series Analysis of the Lockdown Periods in Western Greece and Review of the Literature. Geriatrics (Basel) 2023; 8:72. [PMID: 37489320 PMCID: PMC10366837 DOI: 10.3390/geriatrics8040072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/26/2023] [Accepted: 06/27/2023] [Indexed: 07/26/2023] Open
Abstract
Since December 2019, the COVID-19 pandemic has had a significant impact on healthcare systems worldwide, prompting policymakers to implement measures of isolation and eventually adopt strict national lockdowns, which affected mobility, healthcare-seeking behavior, and services, in an unprecedented manner. This study aimed to analyze the effects of these lockdowns on hip-fracture epidemiology and care services, compared to nonpandemic periods in previous years. We retrospectively collected data from electronic patient records of two major hospitals in Western Greece and included patients who suffered a fragility hip fracture and were admitted during the two 5-week lockdown periods in 2020, compared to time-matched patients from 2017-2019. The results showed a drop in hip-fracture incidence, which varied among hospitals and lockdown periods, and conflicting impacts on time to surgery, time to discharge after surgery, and total hospitalization time. The study also found that differences between the two differently organized units were exaggerated during the COVID-19 lockdown periods, highlighting the impact of compliance with social-distancing measures and the reallocation of resources on the quality of healthcare services. Further research is needed to fully understand the specific variations and patterns of geriatric hip-fracture care during emergency health crises characterized by limited resources and behavioral changes.
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Affiliation(s)
- Ilias D Iliopoulos
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Ioanna Lianou
- Department of Orthopaedic Surgery, "Rion" University Hospital and Medical School, School of Health Sciences, University of Patras, 26504 Patras, Greece
| | - Angelos Kaspiris
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - Dimitrios Ntourantonis
- Accident and Emergency Department, "Rion" University Hospital and Medical School, School of Health Sciences, University of Patras, 26504 Patras, Greece
| | - Christine Arachoviti
- Orthopedics Department, General Hospital of Patras "Agios Andreas", 26332 Patras, Greece
| | - Christos P Zafeiris
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
| | - George I Lambrou
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Efstathios Chronopoulos
- Laboratory for Research of the Musculoskeletal System, School of Medicine, National and Kapodistrian University of Athens, 10679 Athens, Greece
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Vezakis IA, Lambrou GI, Matsopoulos GK. Deep Learning Approaches to Osteosarcoma Diagnosis and Classification: A Comparative Methodological Approach. Cancers (Basel) 2023; 15:cancers15082290. [PMID: 37190217 DOI: 10.3390/cancers15082290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/05/2023] [Accepted: 04/11/2023] [Indexed: 05/17/2023] Open
Abstract
BACKGROUND Osteosarcoma is the most common primary malignancy of the bone, being most prevalent in childhood and adolescence. Despite recent progress in diagnostic methods, histopathology remains the gold standard for disease staging and therapy decisions. Machine learning and deep learning methods have shown potential for evaluating and classifying histopathological cross-sections. METHODS This study used publicly available images of osteosarcoma cross-sections to analyze and compare the performance of state-of-the-art deep neural networks for histopathological evaluation of osteosarcomas. RESULTS The classification performance did not necessarily improve when using larger networks on our dataset. In fact, the smallest network combined with the smallest image input size achieved the best overall performance. When trained using 5-fold cross-validation, the MobileNetV2 network achieved 91% overall accuracy. CONCLUSIONS The present study highlights the importance of careful selection of network and input image size. Our results indicate that a larger number of parameters is not always better, and the best results can be achieved on smaller and more efficient networks. The identification of an optimal network and training configuration could greatly improve the accuracy of osteosarcoma diagnoses and ultimately lead to better disease outcomes for patients.
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Affiliation(s)
- Ioannis A Vezakis
- Biomedical Engineering Laboratory, School of Electrical & Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece
| | - George I Lambrou
- Biomedical Engineering Laboratory, School of Electrical & Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
| | - George K Matsopoulos
- Biomedical Engineering Laboratory, School of Electrical & Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou St., 15780 Athens, Greece
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Ioakeimidis I, Lambrou GI. The role of miRNAs in titanium implants-molecular and pathophysiological mechanisms. JRPMS 2023. [DOI: 10.22540/jrpms-07-026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
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Chatziravdeli V, Lambrou GI, Samartzi A, Kotsalas N, Vlachou E, Komninos J, Tsartsalis AN. A Systematic Review and Meta-Analysis of Continuous Subcutaneous Insulin Infusion vs. Multiple Daily Injections in Type-2 Diabetes. Medicina (Kaunas) 2023; 59:medicina59010141. [PMID: 36676765 PMCID: PMC9861993 DOI: 10.3390/medicina59010141] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/12/2023]
Abstract
Diabetes mellitus (DM) has a growing prevalence worldwide, even in developing countries. Many antidiabetic agents are used to improve glycemic control; however, in cases of an insufficient outcome, insulin is administered. Yet, the timing of proper insulin administration is still a subject of intense research. To date, there have been no recommendations or guidelines for the use of continuous subcutaneous insulin infusion (CSII) in Type 2 Diabetes Mellitus (T2DM). In the present study, we have performed a meta-analysis to evaluate the use of CSII in patients with T2DM. An extensive literature search was conducted through the electronic databases Pubmed, Clinicaltrials.gov, and Cochrane Central Register of Controlled Trials (CENTRAL) from October 2019-May 2022, for interventional studies related to T2DMI and CSII versus multiple daily injections (MDI). We included articles published in the English language only, yielding a total of thirteen studies. We found better outcomes in patients receiving CSII, in regard to glycated hemoglobin (HbA1c) and total insulin dose. In contrast, fasting plasma glucose and body weight did not show statistically significant differences between the two groups. Our analyses showed that CSII could be beneficial in patients with T2DM in order to achieve their glucose targets.
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Affiliation(s)
- Vasiliki Chatziravdeli
- Department of Orthopedics, General Hospital “Ippokrateion”, Konstantinoupoleos 49, 54642 Thessaloniki, Greece
| | - George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
- University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
| | - Athanasia Samartzi
- Department of Endocrinology Diabetes and Metabolism, Naval Hospital of Athens, Dinokratous 70, 11521 Athens, Greece
| | - Nikolaos Kotsalas
- Department of Nephrology, Naval Hospital of Athens, Dinokratous 70, 11521 Athens, Greece
| | - Eugenia Vlachou
- Department of Nursing, School of Health Sciences, University of West Attica, Ag. Spydironos 28, 12243 Athens, Greece
| | - John Komninos
- Department of Endocrinology Diabetes and Metabolism, Naval Hospital of Athens, Dinokratous 70, 11521 Athens, Greece
| | - Athanasios N. Tsartsalis
- Department of Endocrinology Diabetes and Metabolism, Naval Hospital of Athens, Dinokratous 70, 11521 Athens, Greece
- Correspondence:
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Bisyri K, Lambrou GI. The assessment of sarcopenia using magnetic resonance imaging. JRPMS 2022. [DOI: 10.22540/jrpms-06-098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Theodorou I, Tsoukala E, Chochtoula G, Lambrou GI. Evaluation and appraisal of osteopenia on jaws: An update. JRPMS 2022. [DOI: 10.22540/jrpms-06-083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Sarafidis M, Lambrou GI, Zoumpourlis V, Koutsouris D. An Integrated Bioinformatics Analysis towards the Identification of Diagnostic, Prognostic, and Predictive Key Biomarkers for Urinary Bladder Cancer. Cancers (Basel) 2022; 14:cancers14143358. [PMID: 35884419 PMCID: PMC9319344 DOI: 10.3390/cancers14143358] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/03/2022] [Accepted: 07/06/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Bladder cancer is evidently a challenge as far as its prognosis and treatment are concerned. The investigation of potential biomarkers and therapeutic targets is indispensable and still in progress. Most studies attempt to identify differential signatures between distinct molecular tumor subtypes. Therefore, keeping in mind the heterogeneity of urinary bladder tumors, we attempted to identify a consensus gene-related signature between the common expression profile of bladder cancer and control samples. In the quest for substantive features, we were able to identify key hub genes, whose signatures could hold diagnostic, prognostic, or therapeutic significance, but, primarily, could contribute to a better understanding of urinary bladder cancer biology. Abstract Bladder cancer (BCa) is one of the most prevalent cancers worldwide and accounts for high morbidity and mortality. This study intended to elucidate potential key biomarkers related to the occurrence, development, and prognosis of BCa through an integrated bioinformatics analysis. In this context, a systematic meta-analysis, integrating 18 microarray gene expression datasets from the GEO repository into a merged meta-dataset, identified 815 robust differentially expressed genes (DEGs). The key hub genes resulted from DEG-based protein–protein interaction and weighted gene co-expression network analyses were screened for their differential expression in urine and blood plasma samples of BCa patients. Subsequently, they were tested for their prognostic value, and a three-gene signature model, including COL3A1, FOXM1, and PLK4, was built. In addition, they were tested for their predictive value regarding muscle-invasive BCa patients’ response to neoadjuvant chemotherapy. A six-gene signature model, including ANXA5, CD44, NCAM1, SPP1, CDCA8, and KIF14, was developed. In conclusion, this study identified nine key biomarker genes, namely ANXA5, CDT1, COL3A1, SPP1, VEGFA, CDCA8, HJURP, TOP2A, and COL6A1, which were differentially expressed in urine or blood of BCa patients, held a prognostic or predictive value, and were immunohistochemically validated. These biomarkers may be of significance as prognostic and therapeutic targets for BCa.
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Affiliation(s)
- Michail Sarafidis
- Biomedical Engineering Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., 15780 Athens, Greece;
- Correspondence: ; Tel.: +30-210-772-2430
| | - George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, 8 Thivon & Levadeias Str., 11527 Athens, Greece;
- University Research Institute of Maternal and Child Health and Precision Medicine, National and Kapodistrian University of Athens, 8 Thivon & Levadeias Str., 11527 Athens, Greece
| | - Vassilis Zoumpourlis
- Biomedical Applications Unit, Institute of Chemical Biology, National Hellenic Research Foundation, 48 Vas. Konstantinou Ave., 11635 Athens, Greece;
| | - Dimitrios Koutsouris
- Biomedical Engineering Laboratory, School of Electrical and Computer Engineering, National Technical University of Athens, 9 Iroon Polytechniou Str., 15780 Athens, Greece;
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12
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Alamanioti K, Lambrou GI. Communication of patients and healthcare personnel during the diagnostic radiological process. JRPMS 2022. [DOI: 10.22540/jrpms-06-055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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13
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Hatziagapiou K, Bethanis K, Koniari E, Christoforides E, Nikola O, Andreou A, Mantzou A, Chrousos GP, Kanaka-Gantenbein C, Lambrou GI. Biophysical Studies and In Vitro Effects of Tumor Cell Lines of Cannabidiol and Its Cyclodextrin Inclusion Complexes. Pharmaceutics 2022; 14:pharmaceutics14040706. [PMID: 35456540 PMCID: PMC9027293 DOI: 10.3390/pharmaceutics14040706] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 02/06/2023] Open
Abstract
Phytocannabinoids possess anticancer properties, as established in vitro and in vivo. However, they are characterized by high lipophilicity. To improve the properties of cannabidiol (CBD), such as solubility, stability, and bioavailability, CBD inclusion complexes with cyclodextrins (CDs) might be employed, offering targeted, faster, and prolonged CBD release. The aim of the present study is to investigate the in vitro effects of CBD and its inclusion complexes in randomly methylated β-CD (RM-β-CD) and 2-hyroxypropyl-β-CD (HP-β-CD). The enhanced solubility of CBD upon complexation with CDs was examined by phase solubility study, and the structure of the inclusion complexes of CBD in 2,6-di-O-methyl-β-CD (DM-β-CD) and 2,3,6-tri-O-methyl-β-CD (TM-β-CD) was determined by X-ray crystallography. The structural investigation was complemented by molecular dynamics simulations. The cytotoxicity of CBD and its complexes with RM-β-CD and HP-β-CD was tested on two cell lines, the A172 glioblastoma and TE671 rhabdomyosarcoma cell lines. Methylated β-CDs exhibited the best inclusion ability for CBD. A dose-dependent effect of CBD on both cancer cell lines and improved efficacy of the CBD–CDs complexes were verified. Thus, cannabinoids may be considered in future clinical trials beyond their palliative use as possible inhibitors of cancer growth.
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Affiliation(s)
- Kyriaki Hatziagapiou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (K.H.); (O.N.); (A.M.); (C.K.-G.)
- Division of Endocrinology, First Department of Pediatrics, Metabolism, and Diabetes, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
- Physiotherapy Department, Faculty of Health and Care Sciences, State University of West Attica, Agiou Spiridonos 28, 12243 Athens, Greece
| | - Kostas Bethanis
- Physics Laboratory, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece;
- Correspondence: (K.B.); (G.I.L.)
| | - Eleni Koniari
- UNESCO Chair on Adolescent Health Care, “Aghia Sophia” Children’s Hospital, University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (E.K.); (G.P.C.)
| | - Elias Christoforides
- Physics Laboratory, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece;
| | - Olti Nikola
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (K.H.); (O.N.); (A.M.); (C.K.-G.)
| | - Athena Andreou
- Genetics Laboratory, Department of Biotechnology, School of Applied Biology and Biotechnology, Agricultural University of Athens, 75 Iera Odos, 11855 Athens, Greece;
| | - Aimilia Mantzou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (K.H.); (O.N.); (A.M.); (C.K.-G.)
- Division of Endocrinology, First Department of Pediatrics, Metabolism, and Diabetes, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
| | - George P. Chrousos
- UNESCO Chair on Adolescent Health Care, “Aghia Sophia” Children’s Hospital, University Research Institute of Maternal and Child Health & Precision Medicine, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (E.K.); (G.P.C.)
| | - Christina Kanaka-Gantenbein
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (K.H.); (O.N.); (A.M.); (C.K.-G.)
- Division of Endocrinology, First Department of Pediatrics, Metabolism, and Diabetes, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece
| | - George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Athens, Greece; (K.H.); (O.N.); (A.M.); (C.K.-G.)
- Correspondence: (K.B.); (G.I.L.)
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14
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Tsoukala E, Chochtoula G, Theodorou I, Lambrou GI. Dentinogenesis imperfecta: An update. JRPMS 2022. [DOI: 10.22540/jrpms-06-009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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15
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A T, Lambrou GI, Samartzi A, Vlachou E, Papassotiriou I, Geronikolou SA, Kanaka-Gantenbein C, Chrousos GP, Kattamis A. Genotypic and Clinical Analysis of a Thalassemia Major Cohort: An Observational Study. Adv Exp Med Biol 2022; 1339:65-76. [PMID: 35023092 DOI: 10.1007/978-3-030-78787-5_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Thalassemia major (TM) is a hereditary disease caused by defective globin synthesis. Because of the significant increase in life expectancy, these patients are suffering from various health conditions, including endocrinopathies and low bone mineral density. The aim of the present study was to investigate the correlation between clinical and biochemical parameters as well as to identify possible relations in a genotype to phenotype pattern. Sixty-four patients with TM (32 men and 32 women) participated in a cross-sectional study design. The patients were recruited from "Aghia Sofia" Children's Hospital. Clinical and biochemical parameters were evaluated as well as specific mutations were identified. We have found significant correlations between biochemical parameters and iron chelation, hormone replacement treatment as well as TM genotype and hematocrit and T-score. To conclude, the current study showed that clinical parameters of TM patients correlate significantly with both biochemical factors and genotypical patient parameters. Our present study showed that there is a connection between genotype and phenotype as, for example, the identified relation between hematocrit and T-scores and TM-specific mutations. This connection indicates that there is still much more to learn about the role of mutations not only in the disease itself but also in the underlying comorbidities.
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Affiliation(s)
- Tsartsalis A
- Department of Endocrinology Diabetes and Metabolism, Naval Hospital of Athens, Athens, Greece.
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Athens, Greece
| | - Athanasia Samartzi
- Department of Endocrinology Diabetes and Metabolism, Naval Hospital of Athens, Athens, Greece
| | - Eugenia Vlachou
- Department of Nursing, School of Health Sciences and Caring Professions, University of West Attica, Athens, Greece
| | - Ioannis Papassotiriou
- Department of Clinical Biochemistry, "Aghia Sophia" Children's Hospital, Athens, Greece
| | - Styliani A Geronikolou
- Clinical, Translational, Experimental Surgery Research Centerment of Pediatrics, Biomedical Research Foundation of Academy of Athens, Athens, Greece
| | - Christina Kanaka-Gantenbein
- First Department of Pediatrics, Division of Endocrinology Diabetes and Metabolism, National and Kapodistrian University of Athens, Athens, Greece
| | - George P Chrousos
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Athens, Greece
| | - Antonis Kattamis
- First Department of Pediatrics, Hematology/Oncology Unit, National and Kapodistrian University of Athens, Athens, Greece
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16
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C T, Zaravinos A, Tsartsalis AN, Tagka A, Kotoulas A, Geronikolou SA, Braoudaki M, Lambrou GI. Systems Approaches in the Common Metabolomics in Acute Lymphoblastic Leukemia and Rhabdomyosarcoma Cells: A Computational Approach. Adv Exp Med Biol 2022; 1338:55-66. [PMID: 34973010 DOI: 10.1007/978-3-030-78775-2_8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Acute lymphoblastic leukemia is the most common childhood malignancy. Rhabdomyosarcoma, on the other hand, is a rare type of malignancy which belongs to the primitive neuroectodermal family of tumors. The aim of the present study was to use computational methods in order to examine the similarities and differences of the two different tumors using two cell lines as a model, the T-cell acute lymphoblastic leukemia CCRF-CEM and rhabdomyosarcoma TE-671, and, in particular, similarities of the metabolic pathways utilized by two different cell types in vitro. Both cell lines were studied using microarray technology. Differential expression profile has revealed genes with similar expression, suggesting that there are common mechanisms between the two cell types, where some of these mechanisms are preserved from their ancestor embryonic cells. Expression of identified species was modeled using known functions, in order to find common patterns in metabolism-related mechanisms. Species expression manifested very interesting dynamics, and we were able to model the system with elliptical/helical functions. We discuss the results of our analysis in the context of the commonly occurring genes between the two cell lines and the respective participating pathways as far as extracellular signaling and cell cycle regulation/proliferation are concerned. In the present study, we have developed a methodology, which was able to unravel some of the underlying dynamics of the metabolism-related species of two different cell types. Such approaches could prove useful in understanding the mechanisms of tumor ontogenesis, progression, and proliferation.
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Affiliation(s)
- Tselios C
- National and Kapodistrian University of Athens, Laboratory for the Research of Musculoskeletal Disorders, Athens, Greece
| | | | - Athanasios N Tsartsalis
- Naval Hospital of Athens, Department of Endocrinology Diabetes and Metabolism, Athens, Greece
| | - Anna Tagka
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital National and Kapodistrian University of Athens, Athens, Greece
| | - Athanasios Kotoulas
- National Technical University of Athens, School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, Athens, Greece
| | - Styliani A Geronikolou
- Biomedical Research Foundation of Academy of Athens, Clinical, Translational, Experimental Surgery Research Centerment of Pediatrics, Choremeio Research Laboratory, Athens, Greece
| | - Maria Braoudaki
- Department of Life and Environmental Sciences, School of Life and Health Sciences, University of Hertfordshire, Hatfield, England
| | - George I Lambrou
- National and Kapodistrian University of Athens, First Department of Pediatrics, Choremeio Research Laboratory, Athens, Greece.
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17
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Misiaka D, Lambrou GI. The role of microRNAs in osteοporosis: A brief review. JRPMS 2021. [DOI: 10.22540/jrpms-05-134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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18
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Lambrou GI, Poulou M, Giannikou K, Themistocleous M, Zaravinos A, Braoudaki M. Differential and Common Signatures of miRNA Expression and Methylation in Childhood Central Nervous System Malignancies: An Experimental and Computational Approach. Cancers (Basel) 2021; 13:cancers13215491. [PMID: 34771655 PMCID: PMC8583574 DOI: 10.3390/cancers13215491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 11/16/2022] Open
Abstract
Epigenetic modifications are considered of utmost significance for tumor ontogenesis and progression. Especially, it has been found that miRNA expression, as well as DNA methylation plays a significant role in central nervous system tumors during childhood. A total of 49 resected brain tumors from children were used for further analysis. DNA methylation was identified with methylation-specific MLPA and, in particular, for the tumor suppressor genes CASP8, RASSF1, MGMT, MSH6, GATA5, ATM1, TP53, and CADM1. miRNAs were identified with microarray screening, as well as selected samples, were tested for their mRNA expression levels. CASP8, RASSF1 were the most frequently methylated genes in all tumor samples. Simultaneous methylation of genes manifested significant results with respect to tumor staging, tumor type, and the differentiation of tumor and control samples. There was no significant dependence observed with the methylation of one gene promoter, rather with the simultaneous presence of all detected methylated genes' promoters. miRNA expression was found to be correlated to gene methylation. Epigenetic regulation appears to be of major importance in tumor progression and pathophysiology, making it an imperative field of study.
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Affiliation(s)
- George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, 11527 Athens, Greece;
| | - Myrto Poulou
- Department of Medical Genetics, Medical School, National and Kapodistrian University of Athens, 15772 Athens, Greece;
| | - Krinio Giannikou
- Cancer Genetics Laboratory, Division of Pulmonary and Critical Care Medicine and of Genetics, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA;
| | - Marios Themistocleous
- Department of Neurosurgery, “Aghia Sofia” Children’s Hospital, 11527 Athens, Greece;
| | - Apostolos Zaravinos
- Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia 2404, Cyprus
- Basic and Translational Cancer Research Center (BTCRC), Cancer Genetics, Genomics and Systems Biology Group, European University Cyprus, Nicosia 1516, Cyprus
- Correspondence: (A.Z.); (M.B.)
| | - Maria Braoudaki
- Department of Life and Environmental Sciences, School of Life and Health Sciences, University of Hertfordshire, Hertfordshire AL10 9AB, UK
- Correspondence: (A.Z.); (M.B.)
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Lambrou GI, Zaravinos A, Braoudaki M. Co-Deregulated miRNA Signatures in Childhood Central Nervous System Tumors: In Search for Common Tumor miRNA-Related Mechanics. Cancers (Basel) 2021; 13:cancers13123028. [PMID: 34204289 PMCID: PMC8235499 DOI: 10.3390/cancers13123028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/09/2021] [Accepted: 06/14/2021] [Indexed: 02/06/2023] Open
Abstract
Simple Summary Childhood tumors of the central nervous system (CNS) constitute a grave disease and their diagnosis is difficult to be handled. To gain better knowledge of the tumor’s biology, it is essential to understand the underlying mechanisms of the disease. MicroRNAs (miRNAs) are small noncoding RNAs that are dysregulated in many types of CNS tumors and regulate their occurrence and development through specific signal pathways. However, different types of CNS tumors’ area are characterized by different deregulated miRNAs. Here, we hypothesized that CNS tumors could have commonly deregulated miRNAs, i.e., miRNAs that are simultaneously either upregulated or downregulated in all tumor types compared to the normal brain tissue, irrespectively of the tumor sub-type and/or diagnosis. The only criterion is that they are present in brain tumors. This approach could lead us to the discovery of miRNAs that could be used as pan-CNS tumoral therapeutic targets, if successful. Abstract Despite extensive experimentation on pediatric tumors of the central nervous system (CNS), related to both prognosis, diagnosis and treatment, the understanding of pathogenesis and etiology of the disease remains scarce. MicroRNAs are known to be involved in CNS tumor oncogenesis. We hypothesized that CNS tumors possess commonly deregulated miRNAs across different CNS tumor types. Aim: The current study aims to reveal the co-deregulated miRNAs across different types of pediatric CNS tumors. Materials: A total of 439 CNS tumor samples were collected from both in-house microarray experiments as well as data available in public databases. Diagnoses included medulloblastoma, astrocytoma, ependydoma, cortical dysplasia, glioblastoma, ATRT, germinoma, teratoma, yoc sac tumors, ocular tumors and retinoblastoma. Results: We found miRNAs that were globally up- or down-regulated in the majority of the CNS tumor samples. MiR-376B and miR-372 were co-upregulated, whereas miR-149, miR-214, miR-574, miR-595 and miR-765 among others, were co-downregulated across all CNS tumors. Receiver-operator curve analysis showed that miR-149, miR-214, miR-574, miR-595 and miR765 could distinguish between CNS tumors and normal brain tissue. Conclusions: Our approach could prove significant in the search for global miRNA targets for tumor diagnosis and therapy. To the best of our knowledge, there are no previous reports concerning the present approach.
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Affiliation(s)
- George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, Goudi, 11527 Athens, Greece;
| | - Apostolos Zaravinos
- Department of Life Sciences, European University Cyprus, Diogenis Str., 6, Nicosia 2404, Cyprus
- Cancer Genetics, Genomics and Systems Biology Group, Basic and Translational Cancer Research Center (BTCRC), Nicosia 1516, Cyprus
- Correspondence: (A.Z.); (M.B.); Tel.: +974-4403-7819 (A.Z.); +44-(0)-1707286503 (ext. 3503) (M.B.)
| | - Maria Braoudaki
- Department of Clinical, Pharmaceutical and Biological Science, School of Life and Medical Sciences, University of Hertfordshire, College Lane, Hatfield AL10 9AB, Hertfordshire, UK
- Correspondence: (A.Z.); (M.B.); Tel.: +974-4403-7819 (A.Z.); +44-(0)-1707286503 (ext. 3503) (M.B.)
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Flevas DA, Papageorgiou MG, Drakopoulos P, Lambrou GI. The Role of Immune System Cells in Fracture Healing: Review of the Literature and Current Concepts. Cureus 2021. [DOI: 10.7759/cureus.r32] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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21
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Evaggelou E, Lambrou GI. Acid-base disorders and the impact on metabolic bone disease in hemodialysis patients. JRPMS 2021. [DOI: 10.22540/jrpms-05-065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Lambrou GI, Karakonstantakis T, Vlahopoulos S, Zaravinos A. Dual Mechanisms of Metabolism and Gene Expression of the CCRF-CEM Leukemia Cells under Glucocorticoid Treatment. Int J Mol Sci 2021; 22:ijms22115889. [PMID: 34072627 PMCID: PMC8198442 DOI: 10.3390/ijms22115889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Glucocorticoids play an essential part in anti-leukemic therapies, but resistance is a crucial event for the prognosis of the disease. Glucocorticoids influence the metabolic properties of leukemic cells. The inherent plasticity of clinically evolving cancer cells justifies the characterization of drug-induced early oncogenic pathways, which represent a likely source of detrimental secondary effects. AIM The present work aims to investigate the effect of glucocorticoids in metabolic pathways in the CCRF-CEM leukemic cells. Metabolic factors and gene expression profiles were examined in order to unravel the possible mechanisms of the CCRF-CEM leukemic cell growth dynamics. METHODS CCRF-CEM cells were used as a model. Cells were treated with prednisolone with concentrations 0-700 μM. Cell culture supernatants were used for glucose, lactic acid, LDH, Na+, K+ and Ca++ measurements. Cytotoxicity was determined with flow cytometry. Microarray analysis was performed using two different chips of 1.2 k and 4.8 k genes. Gene Ontology enrichment analysis was applied to find metabolism- and GC-related genes. RESULTS Higher prednisolone concentrations inhibited glucose uptake, without exhibiting any cytotoxic effects. Glucose consumption did not correlate with the total cell population, or the viable population, indicating that growth is not directly proportional to glucose consumption. Neither of the subpopulations, i.e., viable, necrotic, or apoptotic cells, contributed to this. CONCLUSIONS Different types of leukemic cells seem to exhibit different patterns of glucose metabolism. Both resistant and sensitive CCRF-CEM cells followed the aerobic pathway of glycolysis. There is probably a rapid change in membrane permeability, causing a general shutdown towards everything that is outside the cell. This could in part also explain the observed resistance. Glucocorticoids do not enter the cell passively anymore and therefore no effects are observed. Based on our observations, ion concentrations are measurable factors both in vitro and in vivo, which makes them possible markers of glucocorticoid cytotoxic action.
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Affiliation(s)
- George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, Goudi, 11527 Athens, Greece;
- Correspondence: (G.I.L.); (A.Z.); Tel.: +30-210-746-7427 (G.I.L.)
| | | | - Spiros Vlahopoulos
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, Goudi, 11527 Athens, Greece;
| | - Apostolos Zaravinos
- Department of Life Sciences, School of Sciences, European University Cyprus, 1516 Nicosia, Cyprus
- Correspondence: (G.I.L.); (A.Z.); Tel.: +30-210-746-7427 (G.I.L.)
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Lambrou GI, Bacopoulou F. Kisspeptin and the "Special Relationship" Between Reproduction and Metabolism: A Computational Approach. Med Chem 2021; 16:796-811. [PMID: 31291878 DOI: 10.2174/1573406415666190710182906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 06/11/2019] [Accepted: 06/18/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Kisspeptin is one of the most potent stimulators of GnRH secretion and consequent gonadotropin release from the anterior pituitary. Kisspeptin is considered critical in regulating reproductive function in relation to metabolic cues. Reproductive function is gated by the energy reserves of the individual. Conditions of energy insufficiency, such as Anorexia Nervosa, often disturb reproductive function and fertility. OBJECTIVE The aim of this research was to investigate similar or comparable hormonal patterns in kisspeptin mechanics using computational methodology tools. METHODS Twenty-two females with typical or atypical anorexia nervosa and fifteen control females, were recruited from the Center for Adolescent Medicine of the University of Athens. Serum levels of Prolactin (PRL), 17-Hydroxy-Progesterone (17OHPR), Free Triiodothyronine (FT3), Triiodothyronine (T3), Free Thyroxine (FT4), Thyroid Stimulating Hormone (TSH), Luteinizing Hormone (LH), Follicle Stimulating Hormone (FSH) and Estradiol (E2) were measured in patients and controls. Data were modelled computationally in order to find similar or comparable patterns between control and anorexic participants, with respect to kisspeptin. RESULTS Kisspeptin manifested symmetrical regression plots between controls and anorexics with respect to 17OHPR, LH and FSH, as well as a threshold pattern among controls, typical and atypical anorexics. CONCLUSION Kisspeptin seems to participate in the anorexic hormonal milieu through threshold or symmetrical mechanisms.
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Affiliation(s)
- George I Lambrou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Thivon & Levadeias 8, 11527 Athens, Greece
| | - Flora Bacopoulou
- Center for Adolescent Medicine and UNESCO Chair on Adolescent Health Care, First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Thivon & Levadeias 8, 11527 Athens, Greece
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Flevas DA, Papageorgiou MG, Drakopoulos P, Lambrou GI. The Role of Immune System Cells in Fracture Healing: Review of the Literature and Current Concepts. Cureus 2021. [DOI: 10.7759/cureus.14703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Lambrou GI, Adamaki M, Hatziagapiou K, Vlahopoulos S. Gene Expression and Resistance to Glucocorticoid-Induced Apoptosis in Acute Lymphoblastic Leukemia: A Brief Review and Update. Curr Drug Res Rev 2021; 12:131-149. [PMID: 32077838 DOI: 10.2174/2589977512666200220122650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/29/2019] [Accepted: 01/23/2020] [Indexed: 01/18/2023]
Abstract
BACKGROUND Resistance to glucocorticoid (GC)-induced apoptosis in Acute Lymphoblastic Leukemia (ALL), is considered one of the major prognostic factors for the disease. Prednisolone is a corticosteroid and one of the most important agents in the treatment of acute lymphoblastic leukemia. The mechanics of GC resistance are largely unknown and intense ongoing research focuses on this topic. AIM The aim of the present study is to review some aspects of GC resistance in ALL, and in particular of Prednisolone, with emphasis on previous and present knowledge on gene expression and signaling pathways playing a role in the phenomenon. METHODS An electronic literature search was conducted by the authors from 1994 to June 2019. Original articles and systematic reviews selected, and the titles and abstracts of papers screened to determine whether they met the eligibility criteria, and full texts of the selected articles were retrieved. RESULTS Identification of gene targets responsible for glucocorticoid resistance may allow discovery of drugs, which in combination with glucocorticoids may increase the effectiveness of anti-leukemia therapies. The inherent plasticity of clinically evolving cancer justifies approaches to characterize and prevent undesirable activation of early oncogenic pathways. CONCLUSION Study of the pattern of intracellular signal pathway activation by anticancer drugs can lead to development of efficient treatment strategies by reducing detrimental secondary effects.
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Affiliation(s)
- George I Lambrou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
| | - Maria Adamaki
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
| | - Kyriaki Hatziagapiou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
| | - Spiros Vlahopoulos
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Athens, Greece
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A T, Lambrou GI, Kyritsi A, Geronikolou SA, Nikolaidou E, Katsarou A, Chatziioannou A, Stratigos A, Rigopoulos D. Urticaria from the Neurodermatological Perspective: A Temporal Analysis of Urticaria and Cognition. GeNeDis 2020 2021; 1339:209-220. [DOI: 10.1007/978-3-030-78787-5_26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Chasapi A, Balampanis K, Kourea E, Kalfaretzos F, Lambadiari V, Lambrou GI, Melachrinou M, Sotiropoulou-Bonikou G. Inter-Tissue and Intra-Tissue Co-Expression Networks in Human Metabolism: Morphological Evaluation of the Link Between Transcription Factors ERβ and NFAT in Morbid Obesity. Curr Diabetes Rev 2021; 17:63-80. [PMID: 32351187 DOI: 10.2174/1573399816666200430112958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 03/22/2020] [Accepted: 04/07/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Estrogen receptor β (ERβ) plays an important role in human metabolism and some of its metabolic actions are mediated by a positive "cross-talk" with Nuclear Factor of Activated T cells (NFAT) and the key metabolic transcriptional coregulator Transcriptional Intermediary Factor 2 (TIF2). INTRODUCTION Our study is an "in situ" morphological evaluation of the communication between ERβ, NFAT and TIF2 in morbid obesity. Potential correlations with clinicopathological parameters and with the presence of diabetes and non-alcoholic fatty liver disease (NAFLD) were also explored. The aim of the present study was to determine the role of ERβ and NFAT in the underlying pathophysiology of obesity and related comorbidities. We have investigated the expression of specific proteins using immunochemistry methodologies. METHODS Our population consists of 50 morbidly obese patients undergoing planned bariatric surgery, during which biopsies were taken from visceral adipose tissue (VAT), subcutaneous adipose tissue (SAT), skeletal muscle (SM), extramyocellular adipose tissue (EMAT) and liver and the differential protein expression was evaluated by immunohistochemistry. RESULTS We demonstrated an extensive intra- and inter-tissue co-expression network, which confirms the tissue-specific and integral role of each one of the investigated proteins in morbid obesity. Moreover, a beneficial role of ERβ and NFATc1 against NAFLD is implicated, whereas the distinct roles of TIF2 still remain an enigma. CONCLUSION We believe that our findings will shed light on the complex underlying mechanisms and that the investigated biomarkers could represent future targets for the prevention and therapy of obesity and its comorbidities.
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Affiliation(s)
- Athina Chasapi
- Department of Pathology, Medical School, University of Patras, 26500 Patra, Greece
| | - Kostas Balampanis
- Department of Pathology, Medical School, University of Patras, 26500 Patra, Greece
| | - Eleni Kourea
- Department of Pathology, Medical School, University of Patras, 26500 Patra, Greece
| | - Fotios Kalfaretzos
- Department of Surgery, Medical School, University of Patras, 26500 Patra, Greece
| | - Vaia Lambadiari
- Second Department of Internal Medicine, Research Unit and Diabetes Center, National and Kapodistrian University of Athens Medical School, Attikon University Hospital, Rimini 1, Haidari, 12462, Athens, Greece
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Medical School, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Maria Melachrinou
- Department of Pathology, Medical School, University of Patras, 26500 Patra, Greece
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Lambrou GI, Kino T, Koide H, Ng SSM, Geronikolou SA, Bacopoulou F, Charmandari E, G C. Bioinformatics Analyses of Spatial Peripheral Circadian Clock-Mediated Gene Expression of Glucocorticoid Receptor-Related Genes. GeNeDis 2020 2021; 1338:67-79. [DOI: 10.1007/978-3-030-78775-2_9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tsartsalis AN, Lambrou GI, Vlachou E, Samartzi A, Chrousos GP, Kanaka-Gantenbein C, Kattamis A. The Effect of Treatment and Bone Metabolic Factors on Fracture Incidence in Patients with Thalassemia-Induced Osteoporosis: An Observational Study. CDTH 2020. [DOI: 10.2174/1574885515666200106110602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Thalassemia Major (TM) is a hereditary disease caused by defective globin synthesis. Because of the significant increase in life expectancy, these patients suffer from various health conditions, including endocrinopathies and low bone mineral density.
Aim:
The aim of the present study was to evaluate the fracture incidence regarding the markers of bone metabolism, bone mineral density and treatment of osteoporosis as well as treatment of comorbidities.
Methods:
Sixty-four patients with TM (32 men and 32 women) participated in a cross-sectional study design. The patients were recruited from “Aghia Sofia” Children’s Hospital and evaluated using dual-energy X-ray absorptiometry (DXA) of the lumbar spine and femoral neck and with markers of bone remodeling including receptor activator of nuclear factor kappa-Β ligand (RANKL), osteoprotegerin (OPG), C-terminal telopeptide (CTX), and sclerostin.
Results:
The statistical analysis of markers of bone metabolism in relation to fractures revealed no statistical significance. However, statistical analysis of bone mineral density and markers of bone metabolism in relation to fractures was also not significant.
Conclusions:
In TM patients, fractures are not related to bone mineral density. Maybe some other conditions are the cause, haemosidirosis, drugs, comorbid conditions.
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Affiliation(s)
- Athanasios N. Tsartsalis
- Naval Hospital of Athens, Department of Endocrinology Diabetes and Metabolism, Dinokratous 70, 11521, Athens, Greece
| | - George I. Lambrou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Eugenia Vlachou
- Department of Nursing, School of Health Sciences and Care Professions, University of West Attica, Ag. Spydironos 28, 12243, Aigaleo, Athens, Greece
| | - Athanasia Samartzi
- Naval Hospital of Athens, Department of Endocrinology Diabetes and Metabolism, Dinokratous 70, 11521, Athens, Greece
| | - George P. Chrousos
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Christina Kanaka-Gantenbein
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Antonis Kattamis
- Hematology/Oncology Unit, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
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Lambrou GI, Hatziagapiou K, Zaravinos A. The Non-Coding RNA GAS5 and Its Role in Tumor Therapy-Induced Resistance. Int J Mol Sci 2020; 21:ijms21207633. [PMID: 33076450 PMCID: PMC7588928 DOI: 10.3390/ijms21207633] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/13/2020] [Accepted: 10/13/2020] [Indexed: 02/07/2023] Open
Abstract
The growth arrest-specific transcript 5 (GAS5) is a >200-nt lncRNA molecule that regulates several cellular functions, including proliferation, apoptosis, invasion and metastasis, across different types of human cancers. Here, we reviewed the current literature on the expression of GAS5 in leukemia, cervical, breast, ovarian, prostate, urinary bladder, lung, gastric, colorectal, liver, osteosarcoma and brain cancers, as well as its interaction with various miRNAs and its effect on therapy-related resistance in these malignancies. The general consensus is that GAS5 acts as a tumor suppressor across different tumor types and that its up-regulation results in tumor sensitization to chemotherapy or radiotherapy. GAS5 seems to play a previously unappreciated, but significant role in tumor therapy-induced resistance.
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Affiliation(s)
- George I. Lambrou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Goudi, Athens, Greece;
- Correspondence: (G.I.L.); (A.Z.); Tel.: +30-210-7467427 (G.I.L.); +974-4403-7819 (A.Z.)
| | - Kyriaki Hatziagapiou
- Choremeio Research Laboratory, First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527 Goudi, Athens, Greece;
| | - Apostolos Zaravinos
- Department of Basic Medical Sciences, College of Medicine, Member of QU Health, Qatar University, 2713 Doha, Qatar
- Correspondence: (G.I.L.); (A.Z.); Tel.: +30-210-7467427 (G.I.L.); +974-4403-7819 (A.Z.)
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Aktsiali M, Papachrysanthou T, Griveas I, Andriopoulos C, Sitaras P, Triantafyllopoulos IK, Lambrou GI. Treatment with Cinacalcet in Hemodialysis Patients with Severe Secondary Hyperparathyroidism, Influences Bone Mineral Metabolism and Anemia Parameters. CDTH 2020. [DOI: 10.2174/1574885514666190802144629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
Due to the premium rate of Chronic Kidney Disease, we have increased
our knowledge with respect to diagnosis and treatment of Bone Mineral Disease (BMD) in End-
Stage Renal Disease (ESRD). Currently, various treatment options are available. The medication
used for Secondary Hyper-Parathyroidism gives promising results in the regulation of Ca, P and
Parathormone levels, improving the quality of life. The aim of the present study was to investigate
the relation of cinacalcet administration to not only parathormone, Ca and P but also to anemia
parameters such as hematocrit and hemoglobin.
Materials and Methods:
retrospective observational study was conducted in a Chronic
Hemodialysis Unit. One-hundred ESRD patients were recruited for twenty-four months and were
evaluated on a monthly rate. Biochemical parameters were related to medication prescribed and the
prognostic value was estimated. Cinacalcet was administered to 43 out of 100 patients in a dose of
30-120 mg.
Results:
Significant differences were observed in PTH, Ca and P levels with respect to Cinacalcet
administration. Ca levels appeared to be higher at 30mg as compared to 60mg cinacalcet.
Furthermore, a decreasing age-dependent pattern was observed with respect to cinacalcet dosage. A
positive correlation was observed between Dry Weight (DW) and cinacalcet dose. Finally, a
positive correlation between Hematocrit and Hemoglobin and cinacalcet was manifested.
Conclusions:
Cinacalcet, is a potential cardiovascular and bone protective agent, which is approved
for use in ESRD patients to assist SHPT. A novel information was obtained from this study,
regarding the improvement of the control of anemia.
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Affiliation(s)
- Maria Aktsiali
- Private Dialysis Unit “Nefroiatriki”, Chlois 85 Str., 14452, Metamorfosi, Athens, Greece
| | | | - Ioannis Griveas
- 417 Veterans Army Administration Hospital of Athens, Monis Petraki 10-12, 11521, Athens, Greece
| | - Christos Andriopoulos
- Private Dialysis Unit “Nefroiatriki”, Chlois 85 Str., 14452, Metamorfosi, Athens, Greece
| | - Panagiotis Sitaras
- Private Dialysis Unit “Nefroiatriki”, Chlois 85 Str., 14452, Metamorfosi, Athens, Greece
| | - Ioannis K. Triantafyllopoulos
- Graduate Program “Metabolic Bones Diseases”, National and Kapodistrian University of Athens, Medical School, Mikras Asias 75, 11527, Goudi, Athens, Greece
| | - George I. Lambrou
- Graduate Program “Metabolic Bones Diseases”, National and Kapodistrian University of Athens, Medical School, Mikras Asias 75, 11527, Goudi, Athens, Greece
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Lambrou GI, Hatziagapiou K, Vlahopoulos S. Inflammation and tissue homeostasis: the NF-κB system in physiology and malignant progression. Mol Biol Rep 2020; 47:4047-4063. [PMID: 32239468 DOI: 10.1007/s11033-020-05410-w] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Accepted: 03/26/2020] [Indexed: 02/07/2023]
Abstract
Disruption of tissue function activates cellular stress which triggers a number of mechanisms that protect the tissue from further damage. These mechanisms involve a number of homeostatic modules, which are regulated at the level of gene expression by the transactivator NF-κB. This transcription factor shifts between activation and repression of discrete, cell-dependent gene expression clusters. Some of its target genes provide feedback to NF-κB itself, thereby strengthening the inflammatory response of the tissue and later terminating inflammation to facilitate restoration of tissue homeostasis. Disruption of key feedback modules for NF-κB in certain cell types facilitates the survival of clones with genomic aberrations, and protects them from being recognized and eliminated by the immune system, to enable thereby carcinogenesis.
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Affiliation(s)
- George I Lambrou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi-Athens, Greece
| | - Kyriaki Hatziagapiou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi-Athens, Greece
| | - Spiros Vlahopoulos
- First Department of Pediatrics, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi-Athens, Greece.
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Tagka A, Lambrou GI, Makris M, Nakou E, Nicolaidou E, Chatziioannou A, Katsarou A. Time-Dependent Effects in Chronic Urticaria: A Time-Series Perspective of Omalizumab Treatment. Endocr Metab Immune Disord Drug Targets 2020; 20:1726-1739. [PMID: 32167432 DOI: 10.2174/1871530320666200313151720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 01/08/2020] [Accepted: 01/16/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Chronic spontaneous urticaria (CSU, or CU) is a disease that significantly affects the quality of life of patients. It is a chronic disease and requires a specialized approach to diagnosis and treatment. In recent years, the disease has been of great interest due to the existence of new targeted therapeutic approaches. AIM The present study aims at analyzing CU score concerning time, as a time-series. The authors have attempted to model the investigated time-series to unravel possible causative relationships. METHODS 108 patients (25Males/83Females) admitted to our department were diagnosed with CU. CU was estimated on a score basis, which was used to define disease severity. Urticaria score was assessed on the basis of Urticaria Activity Score 7 (UAS7). The mean CU score, the mean CU score rate concerning the first month at diagnosis as well as the monthly CU score rate were calculated. RESULTS Gender is a factor that influences CU score with time. In addition, there was a significant finding that time-series differ with the administration of monotherapy or complementary therapy. CONCLUSION We have found that females are more prone to CU, while omalizumab monotherapy has more beneficial results as compared to the application of concurrent and maintenance therapies. Further, patients with co-morbidities were more likely to interrupt treatment. Finally, and most significantly, it was shown that monthly CU score rate manifested an oscillatory pattern, which was modelled with the sum of sines functions, highlighting a relative immunological pattern.
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Affiliation(s)
- Anna Tagka
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Michael Makris
- Allergy Unit, Second Department of Dermatology and Venereology, "Attikon" University Hospital, National and Kapodistrian University of Athens, Greece
| | - Evangelia Nakou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - Electra Nicolaidou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - Argyro Chatziioannou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - Alexandra Katsarou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
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Braoudaki M, Sarafidis M, Koutsouris DD, Koutsouri G, Lambrou GI. Bioinformatics Analysis Reveals Ki-67 Specific microRNA Functions in Pediatric Embryonal Tumors. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:1346-1349. [PMID: 31946142 DOI: 10.1109/embc.2019.8857896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Pediatric Central Nervous System (CNS) neoplasms are the second most prevalent tumors of childhood. CNS malignancies are considered as the most notorious type of tumors, due to their anatomic position manifesting an imminent threat to the patients' life. miRNAs are molecules that play a significant role in CNS tumor biology. At the same time diagnostic markers such as Ki-67 have played an important role in CNS tumor diagnosis. In a previous study we have identified several miRNAs, common to different subtypes of pediatric embryonal CNS malignancies as well as, we have identified miRNAs that manifest significant dynamics with respect to their expression and the neoplasmatic subtype. Among the previously reported miRNAs, several have manifested significant differences with respect to Ki-67 expression. Those miRNAs, were further analyzed bioinformatically and related functions were revealed, where some of them confirmed Ki-67 role as a proliferation marker but also predicted novel miRNAs functions in pediatric embryonal tumors.
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Bizopoulos P, Lambrou GI, Koutsouris D. Signal2Image Modules in Deep Neural Networks for EEG Classification. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:702-705. [PMID: 31945994 DOI: 10.1109/embc.2019.8856620] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Deep learning has revolutionized computer vision utilizing the increased availability of big data and the power of parallel computational units such as graphical processing units. The vast majority of deep learning research is conducted using images as training data, however the biomedical domain is rich in physiological signals that are used for diagnosis and prediction problems. It is still an open research question how to best utilize signals to train deep neural networks.In this paper we define the term Signal2Image (S2Is) as trainable or non-trainable prefix modules that convert signals, such as Electroencephalography (EEG), to image-like representations making them suitable for training image-based deep neural networks defined as `base models'. We compare the accuracy and time performance of four S2Is (`signal as image', spectrogram, one and two layer Convolutional Neural Networks (CNNs)) combined with a set of `base models' (LeNet, AlexNet, VGGnet, ResNet, DenseNet) along with the depth-wise and 1D variations of the latter. We also provide empirical evidence that the one layer CNN S2I performs better in eleven out of fifteen tested models than non-trainable S2Is for classifying EEG signals and present visual comparisons of the outputs of some of the S2Is.
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Koutsomplia G, Lambrou GI. Resistance mechanisms in the radiation therapy of osteosarcoma: a brief review. JRPMS 2020. [DOI: 10.22540/jrpms-04-015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Tagka A, Lambrou GI, Nicolaidou E, Nakou E, Makris M, Stratigos A, Katsarou A. Omalizumab in the Treatment of Chronic Urticaria: The Effect of Drug Co-Administration and Co-Morbidities. Antiinflamm Antiallergy Agents Med Chem 2020; 20:39-50. [PMID: 32013838 DOI: 10.2174/1871523019666200203123734] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/08/2020] [Accepted: 01/19/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Chronic Spontaneous Urticaria (CSU) is a disease presenting typical wheals characterized by itching, angioedema or both. Although CU is, by appearance, a relatively "simple" disease, yet it has a devastating effect on those suffering due to its immense social implications. AIMS The aim of the present study was to investigate the effect of omalizumab in the treatment of CSU. In particular, gender, co-administration of drugs and comorbidities were taken into account. MATERIALS AND METHODS 108 patients (25 Males/83 Females) admitted to our department were diagnosed with CSU and were treated for 30 months. CSU was estimated on a score basis, which was used in order to define disease severity. The mean total CSU score and the mean CSU score of the first trimester, as well as the first semester, were calculated. Patients were treated with omalizumab, and in several cases, with co-administration of dapsone, cyclosporine and anti-histamines. RESULTS Females manifested significantly higher scores as compared to males. Further on, patients who relapsed manifested significantly higher scores during the whole time course, as well as at the end of the first semester. CONCLUSION Females are more prone to CSU. Although CSU scores in patients with remission, relapse and poor response manifested no significant difference at diagnosis, relapsed patients manifested higher CSU scores in the first semester. Therefore, the first semester of treatment is probably critical for the final patient outcome. Further studies are necessary in order to understand the mechanisms of CSU for better treatment and prognosis.
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Affiliation(s)
- Anna Tagka
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Electra Nicolaidou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - Evangelia Nakou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - Michael Makris
- Allergy Unit, Second Department of Dermatology and Venereology, "Attikon" University Hospital, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Alexandros Stratigos
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
| | - Alexandra Katsarou
- First Department of Dermatology and Venereology, "Andreas Syggros" Hospital, National and Kapodistrian University of Athens, Medical School, Ionos Dragoumi 5, 11621, Athens, Greece
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Lambrou GI, Sarafidis M, Bizopoulos P, Iliopoulou D, Paidi A, Koutsouris DD. The "Prisoner's Dilemma" in the Tumor Biology Context: The Warburg Effect, Proliferation Dynamics and Equilibria. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:1342-1345. [PMID: 31946141 DOI: 10.1109/embc.2019.8856886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
There are numerous theories concerning carcinogenesis. Starting from the Warburg effect, which was one of the first theories concerning the mitochondrial dysfunction in tumor cells. Further on, the "two-hit" theory, where tumors were considered to be the outcome of genetic aberrations or mutations and more specifically of a certain number of "hits" each one resulting in a mutation. One of the main physical problems of biological systems is proliferation. Proliferation brings forwards two main questions: First, under a given population of cells, at time t what will be the precise population at time t+24h (or any other time point)? Second, what are the metabolic strategies followed by tumor cells in order to facilitate for their growth? In the present work we have used experimental data obtained from proliferation experiments of leukemic cells, where cell population and glucose consumption were evaluated. These data were further used to examine whether cells progress through competitive behavior or synergistically. Our results have shown that cells probably progress through a cooperative strategy.
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Lambrou GI, Ioannidou P, Bizopoulos P, Toumpaniaris P, Kepentzis S, Koutsouris DD. Simulation of a Cellular Automaton with Markov Chains: Applications in Self-Organized Dynamical Systems. Annu Int Conf IEEE Eng Med Biol Soc 2020; 2019:248-251. [PMID: 31945888 DOI: 10.1109/embc.2019.8856952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
over the past years, technology has allowed information technology to contemplate complex events as well as complex semantic features to predict what types of "thoughts" are being conceptualized. The introduction of the neuro-robotics field allows a mix of different disciplines to inter-collate and produce actual results that could be considered outputs of a science-fiction novel 20 twenty years ago. In the present work, we attempted to present an example of how an automaton can move in an environment with obstacles, by regulating its behavior so as to allow a decision based on rewards and penalties. Examples of the robotic behavior, running on a virtual environment are presented, along with a discussion of its different possibilities expressed as a penalty function for the behavior of the robot.
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Kardaras K, Koutsouris D, Lambrou GI. Security efficient command control communication and integration with digital television. IJESDF 2020. [DOI: 10.1504/ijesdf.2020.10029570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Background:
A very popular technique for isolating significant genes from cancerous
tissues is the application of various clustering algorithms on data obtained by DNA microarray experiments.
Aim:
The objective of the present work is to take into consideration the chromosomal identity of
every gene before the clustering, by creating a three-dimensional structure of the form Chromosomes×Genes×Samples.
Further on, the k-Means algorithm and a triclustering technique called δ-
TRIMAX, are applied independently on the structure.
Materials and Methods:
The present algorithm was developed using the Python programming
language (v. 3.5.1). For this work, we used two distinct public datasets containing healthy control
samples and tissue samples from bladder cancer patients. Background correction was performed
by subtracting the median global background from the median local Background from the signal
intensity. The quantile normalization method has been applied for sample normalization. Three
known algorithms have been applied for testing the “gene cube”, a classical k-means, a transformed
3D k-means and the δ-TRIMAX.
Results:
Our proposed data structure consists of a 3D matrix of the form Chromosomes×Genes×Samples.
Clustering analysis of that structure manifested very good results as we
were able to identify gene expression patterns among samples, genes and chromosomes. Discussion:
to the best of our knowledge, this is the first time that such a structure is reported and it consists
of a useful tool towards gene classification from high-throughput gene expression experiments.
Conclusion:
Such approaches could prove useful towards the understanding of disease mechanics
and tumors in particular.
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Affiliation(s)
- George I. Lambrou
- National Technical University of Athens, School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, Heroon Polytecniou 9, Athens, 15780, Athens, Greece
| | - Maria Sdraka
- National Technical University of Athens, School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, Heroon Polytecniou 9, Athens, 15780, Athens, Greece
| | - Dimitrios Koutsouris
- National Technical University of Athens, School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, Heroon Polytecniou 9, Athens, 15780, Athens, Greece
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Asonitis N, Angelousi A, Zafeiris C, Lambrou GI, Dontas I, Kassi E. Diagnosis, Pathophysiology and Management of Hypercalcemia in Malignancy: A Review of the Literature. Horm Metab Res 2019; 51:770-778. [PMID: 31826272 DOI: 10.1055/a-1049-0647] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Hypercalcemia of malignancy is the most common life-threatening metabolic disorder in patients with advanced stage cancers and is a sign of poor prognosis. It usually presents with markedly elevated calcium level and is severely symptomatic. It is associated with hematological malignancies, such as multiple myeloma, non-Hodgkin lymphoma, leukemias and solid cancers, particularly renal and breast carcinomas as well as squamous cell carcinomas of any organ. Several mechanisms have been implicated in the development of hypercalcemia of malignancy amongst them the osteolytic related hypercalcemia, parathyroid hormone-related peptide (PTHrP) mediated hypercalcemia, extrarenal 1,25 dixydroxyvitamin D (calcitriol) mediated hypercalcemia and parathyroid hormone (PTH) related hypercalcemia either ectopic in origin or in patients with parathyroid carcinoma. Clinical history and and physical examination could point towards the correct diagnosis confirmed by the above-mentioned biochemical mediators of hypercalcemia. Early diagnosis and treatment lowering calcium levels in the blood can improve symptoms and the quality of life of these patients and avoid delays for further antitumor therapy.
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Affiliation(s)
- Nikolaos Asonitis
- Endocrinology, National and Kapodistrian University of Athens - Faculty of Medicine, Athens, Greece
| | - Anna Angelousi
- Endocrinology, National and Kapodistrian University of Athens - Faculty of Medicine, Athens, Greece
| | - Christos Zafeiris
- Laboratory of Research of the Musculoskeletal System, National and Kapodistrian University of Athens, KAT Hospital, Athens, Greece
| | - George I Lambrou
- Faculty of Medicine, First Department of Paediatrics, National and Kapodistrian University of Athens, Athens, Greece
| | - Ismene Dontas
- Laboratory of Research of the Musculoskeletal System, National and Kapodistrian University of Athens, KAT Hospital, Athens, Greece
| | - Eva Kassi
- Endocrinology, National and Kapodistrian University of Athens - Faculty of Medicine, Athens, Greece
- Biological Chemistry, Medical School, National and Kapodistrian University of Athens, Greece
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Vezertzis K, Lambrou GI, Koutsouris D. Development of Patient Databases for Endocrinological Clinical and Pharmaceutical Trials: A Survey. Rev Recent Clin Trials 2019; 15:5-21. [PMID: 31744453 DOI: 10.2174/1574887114666191118122714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 10/22/2019] [Accepted: 11/05/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND According to European legislation, a clinical trial is a research involving patients, which also includes a research end-product. The main objective of the clinical trial is to prove that the research product, i.e. a proposed medication or treatment, is effective and safe for patients. The implementation, development, and operation of a patient database, which will function as a matrix of samples with the appropriate parameterization, may provide appropriate tools to generate samples for clinical trials. AIMS The aim of the present work is to review the literature with respect to the up-to-date progress on the development of databases for clinical trials and patient recruitment using free and open-source software in the field of endocrinology. METHODS An electronic literature search was conducted by the authors from 1984 to June 2019. Original articles and systematic reviews selected, and the titles and abstracts of papers screened to determine whether they met the eligibility criteria, and full texts of the selected articles were retrieved. RESULTS The present review has indicated that the electronic health records are related with both the patient recruitment and the decision support systems in the domain of endocrinology. The free and open-source software provides integrated solutions concerning electronic health records, patient recruitment, and the decision support systems. CONCLUSION The patient recruitment relates closely to the electronic health record. There is maturity at the academic and research level, which may lead to good practices for the deployment of the electronic health record in selecting the right patients for clinical trials.
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Affiliation(s)
- Konstantinos Vezertzis
- School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, National Technical University of Athens, Heroon Polytecniou 9, Athens, 15780, Athens, Greece
| | - George I Lambrou
- School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, National Technical University of Athens, Heroon Polytecniou 9, Athens, 15780, Athens, Greece.,First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Thivon & Levadeias 8, 11527, Goudi, Athens, Greece
| | - Dimitrios Koutsouris
- School of Electrical and Computer Engineering, Biomedical Engineering Laboratory, National Technical University of Athens, Heroon Polytecniou 9, Athens, 15780, Athens, Greece
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Hatziagapiou K, Kakouri E, Lambrou GI, Koniari E, Kanakis C, Nikola OA, Theodorakidou M, Bethanis K, Tarantilis PA. Crocins: The Active Constituents of Crocus Sativus L. Stigmas, Exert Significant Cytotoxicity on Tumor Cells In Vitro. CCTR 2019. [DOI: 10.2174/1573394714666181029120446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background::Tumors of the childhood are considered to be grave and devastating pathologies, with high mortality rates. Current therapeutic options like cytotoxic drugs and radiotherapy target both healthy and malignant cells, thus resulting in long-term neurological and intellectual sequelae and endocrinological disorders.Objectives::In this study, we focused on the anticancer potency of crocins, the main constituents of Crocus sativus L, stigmas. Crocins were first extracted using organic solvents from the dried stigmas and then were identified using the HPLC analysis.Materials and Methods::TE-671 cells were treated with the extract of crocins using a range of concentrations between 0.25-mg/ mL and 16 mg/mL. Viability of the cells was measured at 24h, 48h, 72h and 96h. In addition, we have examined the expression levels of the p53 gene using Real-Time Reverse Transcription PCR.Results::Results showed that crocins exerted significant cytotoxic and anti-proliferative effects in a concentration and time - dependent-manner on TE-671 cells. Furthermore, p53 manifested similar expression pattern as the anti-proliferative effect of crocin.Conclusion::Our data demonstrate that crocins could be a novel promising agent for the improvement of tumor treatment.
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Affiliation(s)
- Kyriaki Hatziagapiou
- Haematology and Oncology Unit, Choremeio Research Laboratory, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Eleni Kakouri
- Laboratory of Chemistry, Department of Food Science & Human Nutrition, School of Food Biotechnology and Development, Agricultural University of Athens, Athens, Greece
| | - George I. Lambrou
- Haematology and Oncology Unit, Choremeio Research Laboratory, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Eleni Koniari
- Haematology and Oncology Unit, Choremeio Research Laboratory, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Charalabos Kanakis
- Laboratory of Chemistry, Department of Food Science & Human Nutrition, School of Food Biotechnology and Development, Agricultural University of Athens, Athens, Greece
| | - Olti A. Nikola
- Haematology and Oncology Unit, Choremeio Research Laboratory, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Margarita Theodorakidou
- Haematology and Oncology Unit, Choremeio Research Laboratory, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Bethanis
- Laboratory of Physics, Department of Biotechnology, School of Food Biotechnology and Development, Agricultural University of Athens, Athens, Greece
| | - Petros A. Tarantilis
- Laboratory of Chemistry, Department of Food Science & Human Nutrition, School of Food Biotechnology and Development, Agricultural University of Athens, Athens, Greece
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Evangelatos G, Fragoulis GE, Koulouri V, Lambrou GI. MicroRNAs in rheumatoid arthritis: From pathogenesis to clinical impact. Autoimmun Rev 2019; 18:102391. [PMID: 31520804 DOI: 10.1016/j.autrev.2019.102391] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 05/31/2019] [Indexed: 12/15/2022]
Abstract
Over the last decade, many epigenetic mechanisms that contribute in the pathogenesis of autoimmune disorders have been revealed. MicroRNAs (miRNAs) are small, non-coding, RNA molecules that bind to messenger RNAs and disrupt the transcription of target genes. Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease in which a plethora of epigenetic changes take place. Current research on RA epigenetics has focused mainly on miRNAs. Genetic variance of some miRNA genes, especially miR-499, might predispose an individual to RA development. Additionally, altered expression of many miRNAs has been discovered in several cells, tissues and body fluids in patients with RA. MiRNAs expression also differs depending on disease's stage and activity. Serum miR-22 and miR-103a might predict RA development in susceptible individuals (pre-RA), while serum miR-16, miR-24, miR-125a and miR-223 levels are altered in early RA (disease duration <12 months) patients compared to established RA or healthy individuals. Moreover, serum miR-223 levels have been associated with RA activity and disease relapse. What is more, serum levels of several miRNAs, including miR-125b and miR-223, could be used to predict response to RA treatment. Finally, miRNA analogs or antagonists have been used as therapeutic regimens in experimental arthritis models and have demonstrated promising results. In conclusion, the research on the miRNA alterations in RA sheds light to several aspects of RA pathogenesis, introduces new biomarkers for RA diagnosis and treatment response prediction and offers the opportunity to discover new, targeted drugs for patients with RA.
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Affiliation(s)
- Gerasimos Evangelatos
- Rheumatology Department, 417 Army Share Fund Hospital (NMTS), Athens, Greece; Postgraduate Program "Metabolic Bone Diseases", School of Medicine, National and Kapodistrian University of Athens, Greece.
| | - George E Fragoulis
- Rheumatology Unit, First Department of Propaedeutic Internal Medicine, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece; Institute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, United Kingdom.
| | - Vassiliki Koulouri
- Department of Physiology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
| | - George I Lambrou
- Postgraduate Program "Metabolic Bone Diseases", School of Medicine, National and Kapodistrian University of Athens, Greece; Choremeio Research Laboratory, First Department of Pediatrics, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece.
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Papachrysanthou T, Aktsiali M, Griveas I, Andriopoulos C, Sitaras P, Lambrou GI. The relation of parathyroid hormone and hematologic parameters under erythropoetin administration in hemodialysis patients. JRPMS 2019. [DOI: 10.22540/jrpms-03-106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Gioutlaki E, Karyakatzis T, Lambrou GI. Imaging methods for the control and treatment of sarcopenia. JRPMS 2019. [DOI: 10.22540/jrpms-03-102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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Hatziagapiou K, Kakouri E, Lambrou GI, Bethanis K, Tarantilis PA. Antioxidant Properties of Crocus Sativus L. and Its Constituents and Relevance to Neurodegenerative Diseases; Focus on Alzheimer's and Parkinson's Disease. Curr Neuropharmacol 2019; 17:377-402. [PMID: 29564976 PMCID: PMC6482475 DOI: 10.2174/1570159x16666180321095705] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 01/03/2018] [Accepted: 03/19/2018] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Reactive oxygen species and reactive nitrogen species, which are collectively called reactive oxygen-nitrogen species, are the inevitable by-products of cellular metabolic redox reactions, such as oxidative phosphorylation in the mitochondrial respiratory chain, phagocytosis, reactions of biotransformation of exogenous and endogenous substrata in endoplasmic reticulum, eicosanoid synthesis, and redox reactions in the presence of metal with variable valence. Among medicinal plants, there is growing interest in Crocus Sativus L. It is a perennial, stemless herb, belonging to Iridaceae family, cultivated in various countries such as Greece, Italy, Spain, Israel, Morocco, Turkey, Iran, India, China, Egypt and Mexico. OBJECTIVE The present study aims to address the protective role of Crocus Sativus L. in neurodegeneration with an emphasis in Parkinson's and Alzheimer's disease. MATERIALS AND METHODS An electronic literature search was conducted by two of the authors from 1993 to August 2017. Original articles and systematic reviews (with or without meta-analysis), as well as case reports were selected. Titles and abstracts of papers were screened by a third reviewer to determine whether they met the eligibility criteria, and full texts of the selected articles were retrieved. RESULTS Hence, the authors focused on the literature concerning the role of Crocus Sativus L. on its anti-oxidant and neuroprotective properties. CONCLUSION Literature findings represented in current review herald promising results for using Crocus Sativus L. and/or its active constituents as antioxidants, anti-inflammatory, and neuroprotective agents.
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Affiliation(s)
- Kyriaki Hatziagapiou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Hematology/Oncology Unit, Athens, Greece
| | - Eleni Kakouri
- Laboratory of Chemistry, Department of Food Science & Human Nutrition, School of Food Biotechnology and Development, Agricultural University of Athens, Athens, Greece
| | - George I Lambrou
- First Department of Pediatrics, National and Kapodistrian University of Athens, Choremeio Research Laboratory, Hematology/Oncology Unit, Athens, Greece
| | - Kostas Bethanis
- Physics Laboratory, Department of Biotechnology, School of Food Biotechnology and Development, Agricultural University of Athens, Greece
| | - Petros A Tarantilis
- Laboratory of Chemistry, Department of Food Science & Human Nutrition, School of Food Biotechnology and Development, Agricultural University of Athens, Athens, Greece
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Tagka A, Stratigos A, Lambrou GI, Nicolaidou E, Katsarou A, Chatziioannou A. Prevalence of contact dermatitis in the Greek population: A retrospective observational study. Contact Dermatitis 2019; 81:460-462. [PMID: 31347179 DOI: 10.1111/cod.13364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/19/2019] [Accepted: 07/24/2019] [Indexed: 10/26/2022]
Affiliation(s)
- Anna Tagka
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandros Stratigos
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George I Lambrou
- First Department of Pediatrics, Choremeio Research Laboratory, National and Kapodistrian University of Athens, Athens, Greece
| | - Electra Nicolaidou
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Alexandra Katsarou
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Argyro Chatziioannou
- First Department of Dermatology and Venereology, Andreas Syggros Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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