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Filindris T, Papakonstantinou E, Keramida M, Panteris E, Kalogeropoulos S, Georgopoulos N, Taniguchi F, Adonakis G, Harada T, Kaponis A. The effect of GnRH-a on the angiogenesis of endometriosis. Hormones (Athens) 2024:10.1007/s42000-024-00559-6. [PMID: 38639888 DOI: 10.1007/s42000-024-00559-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 04/03/2024] [Indexed: 04/20/2024]
Abstract
PURPOSE Neoangiogenesis is necessary for adhesion and invasiveness of endometriotic lesions in women affected by endometriosis. Vascular endothelial growth factor (VEGF) is one of the main components of angiogenesis and is part of the major pathway tissue factor (TF)-protease activated receptor-2 (PAR-2)-VEGF that leads to neoangiogenesis. Specificity protein 1 (SP1) is a transcriptional factor that has recently been studied for its crucial role in angiogenesis via a specific pathway. We hypothesize that by blocking angiogenetic pathways we can suppress endometriotic lesions. Gonadotrophin-releasing hormone-agonists (GnRH-a) are routinely used, especially preoperatively, in endometriosis. It would be of great interest to clarify which angiogenetic pathways are affected and, thereby, pave the way for further research into antiangiogenetic effects on endometriosis. METHODS We used quantitative real-time polymerase chain reaction (qRT-PCR) to study mRNA expression levels of TF, PAR-2, VEGF, and SP1 in endometriotic tissues of women who underwent surgery for endometriosis and received GnRH-a (leuprolide acetate) preoperatively. RESULTS VEGF, TF, and PAR-2 expression is significantly lower in patients who received treatment (p < 0,001) compared to those who did not, whereas SP1 expression is not altered (p = 0.779). CONCLUSIONS GnRH-a administration does affect some pathways of angiogenesis in endometriotic lesions, but not all of them. Therefore, supplementary treatments that affect the SP1 pathway of angiogenesis should be developed to enhance the antiangiogenetic effect of GnRH-a in patients with endometriosis. TRIAL REGISTRATION Clinicaltrial.gov ID: NCT06106932.
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Affiliation(s)
- Theodoros Filindris
- Dept. of Obstetrics & Gynecology, Patras University School of Medicine, Patras, Greece
| | | | - Maria Keramida
- Dept. of Obstetrics & Gynecology, Patras University School of Medicine, Patras, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, 54124, Greece
| | | | - Neoklis Georgopoulos
- Dept. of Obstetrics & Gynecology, Patras University School of Medicine, Patras, Greece
| | - Fuminori Taniguchi
- Dept. of Obstetrics & Gynecology, Tottori University Faculty of Medicine, Yonago, Japan
| | - George Adonakis
- Dept. of Obstetrics & Gynecology, Patras University School of Medicine, Patras, Greece
| | - Tasuku Harada
- Dept. of Obstetrics & Gynecology, Tottori University Faculty of Medicine, Yonago, Japan
| | - Apostolos Kaponis
- Dept. of Obstetrics & Gynecology, Patras University School of Medicine, Patras, Greece.
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Koukou Z, Panteris E, Manolakos E, Papadopoulos A, Papoulidis I, Relakis K, Sifakis S. Cell‑free fetal DNA at 11‑13 weeks of gestation is not altered in complicated pregnancies. Biomed Rep 2024; 20:69. [PMID: 38495346 PMCID: PMC10941718 DOI: 10.3892/br.2024.1757] [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: 06/19/2023] [Accepted: 12/13/2023] [Indexed: 03/19/2024] Open
Abstract
Non-invasive maternal cell-free fetal DNA (cffDNA) is a promising biomarker for screening common genetic syndromes. Alterations in the expression levels of cffDNA in the maternal circulation have been demonstrated in abnormal pregnancies. However, the results are conflicting. The present study aimed to investigate whether cffDNA levels are associated with pregnancy complications. The study group comprised pregnant women who presented with pregnancy complications, such as preterm birth, gestational hypertension, intrauterine growth retardation, gestational diabetes, polyhydramnios, oligohydramnios, vaginal bleeding and placental abruption. The control group comprised women who had a normal pregnancy course. Blood samples were obtained from 500 pregnant women between 11-13 weeks of gestation. cffDNA was amplified, sequenced and analyzed using the next-generation aneuploidy test of a Panorama-Natera kit. Nuchal translucency (NT) thickness as well as pregnancy associated plasma protein-A (PAPP-A) and β-human chorionic gonadotropin (β-hCG) levels were also assessed. Statistical analysis was performed in 494 out of the 500 samples collected with SPSS v.26 using non-parametric methods. The parameters were normalized by the multiples of median (MoM) method. The expression levels of PAPP-A, β-hCG, and the NT mean MoM values were significantly different between the study and control groups (P=0.005, P<0.001 and P=0.007, respectively). However, the expression levels of cffDNA and the mean MoM values were not significantly different between these two groups (P=0.687). The findings of the present study support the conclusion that cffDNA expression is not altered in a series of pregnancy complications. The prognostic value of cffDNA in predicting adverse pregnancy outcomes requires further investigation.
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Affiliation(s)
- Zoi Koukou
- School of Health Sciences, International Hellenic University (IHU), 57400 Thessaloniki, Greece
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Emmanouel Manolakos
- Access to Genome P.C., Clinical Laboratory Genetics, 11528 Thessaloniki, Greece
| | | | - Ioannis Papoulidis
- Access to Genome P.C., Clinical Laboratory Genetics, 11528 Thessaloniki, Greece
| | - Konstantinos Relakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, 71500 Heraklion, Greece
| | - Stavros Sifakis
- Department of Obstetrics and Gynecology, University Hospital of Heraklion, 71500 Heraklion, Greece
- Mitera Maternity Hospital, 71202 Heraklion, Greece
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Stalikas N, Karagiannidis E, Papazoglou AS, Panteris E, Didagelos M, Ziakas A, Vassilikos V, Giannakoulas G, Giannopoulos G. Added prognostic value of stress-induced hyperglycemia to the GRACE 2.0 risk score for prediction of 1-year major adverse cardiovascular events in patients with ST-elevation myocardial infarction. Hellenic J Cardiol 2023; 73:81-83. [PMID: 37044155 DOI: 10.1016/j.hjc.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 04/07/2023] [Indexed: 04/14/2023] Open
Affiliation(s)
- Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - Efstratios Karagiannidis
- Second Department of Cardiology, Hippokration University Hospital, Aristotle University of Thessaloniki, Greece
| | - Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Greece; Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Greece
| | - Manthos Didagelos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - Antonios Ziakas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - Vasileios Vassilikos
- Third Department of Cardiology, Hippokration University Hospital, Aristotle University of Thessaloniki, Greece
| | - George Giannakoulas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Greece
| | - George Giannopoulos
- Third Department of Cardiology, Hippokration University Hospital, Aristotle University of Thessaloniki, Greece.
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Koukou Z, Papadopoulou E, Panteris E, Papadopoulou S, Skordou A, Karamaliki M, Diamanti E. The Effect of Breastfeeding on Food Allergies in Newborns and Infants. Children (Basel) 2023; 10:1046. [PMID: 37371277 DOI: 10.3390/children10061046] [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] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 05/10/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023]
Abstract
Breastfeeding is the preferred method of infant feeding and its establishment is one of the primary goals for the infant. Allergic diseases are common in childhood, with increased morbidity. Food allergies are also associated with a strong negative impact on health-related quality of life and is a major public health problem. In addition, maternal exclusion of common allergens during pregnancy and/or lactation suggests that supplementation with regular cow's milk formula during the first week of life should be avoided. Breast milk contains many active immune factors, such as cytokines, inflammatory mediators, signaling molecules and soluble receptors, which may also reduce the risk of allergic disease. The prophylactic effects of breastfeeding have been the subject of many studies, some with weak evidence. In this narrative review, we aim to provide an up-to-date account of the effects of prophylactic breastfeeding on food allergy and other common allergies in infants and children up to 5 years of age. Colostrum in particular has been shown to be prophylactic against food allergy. The American Academy of Pediatrics cautions that the relationship between duration of breastfeeding and incidence of food allergy in early childhood is unclear. The protective role of breastfeeding has a positive effect on allergy prevention, which is opposed by the early introduction of solid foods, but larger studies are needed to confirm the evidence. There is evidence that breastfeeding is effective in providing partial protection to infants.
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Affiliation(s)
- Zoi Koukou
- School of Health Sciences, International Hellenic University (IHU), Sindos, 57400 Thessaloniki, Greece
| | | | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Styliani Papadopoulou
- School of Health Sciences, International Hellenic University (IHU), Sindos, 57400 Thessaloniki, Greece
| | - Anna Skordou
- School of Health Sciences, International Hellenic University (IHU), Sindos, 57400 Thessaloniki, Greece
| | - Maria Karamaliki
- School of Health Sciences, International Hellenic University (IHU), Sindos, 57400 Thessaloniki, Greece
| | - Elisavet Diamanti
- School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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Panteris E, Deda O, Papazoglou AS, Karagiannidis E, Liapikos T, Begou O, Meikopoulos T, Mouskeftara T, Sofidis G, Sianos G, Theodoridis G, Gika H. Machine Learning Algorithm to Predict Obstructive Coronary Artery Disease: Insights from the CorLipid Trial. Metabolites 2022; 12:metabo12090816. [PMID: 36144220 PMCID: PMC9504538 DOI: 10.3390/metabo12090816] [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: 07/28/2022] [Revised: 08/21/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Developing risk assessment tools for CAD prediction remains challenging nowadays. We developed an ML predictive algorithm based on metabolic and clinical data for determining the severity of CAD, as assessed via the SYNTAX score. Analytical methods were developed to determine serum blood levels of specific ceramides, acyl-carnitines, fatty acids, and proteins such as galectin-3, adiponectin, and APOB/APOA1 ratio. Patients were grouped into: obstructive CAD (SS > 0) and non-obstructive CAD (SS = 0). A risk prediction algorithm (boosted ensemble algorithm XGBoost) was developed by combining clinical characteristics with established and novel biomarkers to identify patients at high risk for complex CAD. The study population comprised 958 patients (CorLipid trial (NCT04580173)), with no prior CAD, who underwent coronary angiography. Of them, 533 (55.6%) suffered ACS, 170 (17.7%) presented with NSTEMI, 222 (23.2%) with STEMI, and 141 (14.7%) with unstable angina. Of the total sample, 681 (71%) had obstructive CAD. The algorithm dataset was 73 biochemical parameters and metabolic biomarkers as well as anthropometric and medical history variables. The performance of the XGBoost algorithm had an AUC value of 0.725 (95% CI: 0.691−0.759). Thus, a ML model incorporating clinical features in addition to certain metabolic features can estimate the pre-test likelihood of obstructive CAD.
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Affiliation(s)
- Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
- Correspondence: (E.P.); (O.D.); (H.G.)
| | - Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
- Correspondence: (E.P.); (O.D.); (H.G.)
| | - Andreas S. Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece
| | - Theodoros Liapikos
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Olga Begou
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Thomas Meikopoulos
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Thomai Mouskeftara
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
| | - Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece
| | - Georgios Theodoridis
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, 57001 Thermi, Greece
- Correspondence: (E.P.); (O.D.); (H.G.)
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Stalikas N, Papazoglou AS, Karagiannidis E, Panteris E, Moysidis D, Daios S, Anastasiou V, Patsiou V, Koletsa T, Sofidis G, Sianos G, Giannakoulas G. Association of stress induced hyperglycemia with angiographic findings and clinical outcomes in patients with ST-elevation myocardial infarction. Cardiovasc Diabetol 2022; 21:140. [PMID: 35883091 PMCID: PMC9327277 DOI: 10.1186/s12933-022-01578-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/21/2022] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Stress induced hyperglycemia (SIH) is common among patients with ST-elevation myocardial infarction (STEMI), even in patients without diabetes mellitus. However, evidence regarding its role on the angiographic outcomes and the prognosis of patients presenting with STEMI is scarce. METHODS This study included 309 consecutively enrolled STEMI patients undergoing primary percutaneous coronary intervention (pPCI). Patients were diagnosed with SIH if blood glucose on admission was > 140 mg/dl. Also, patients had to fast for at least 8 hours before blood sampling. The objective was to assess whether SIH was associated with major adverse cardiovascular and cerebrovascular (MACCE) events and explore its relationship with angiographic predictors of worse prognosis such as poor initial TIMI flow, intracoronary thrombus burden, distal embolization, and presence of residual thrombus after pPCI. RESULTS SIH in diabetic and non-diabetic patients was associated with a higher incidence of LTB (aOR = 2.171, 95% CI 1.27-3.71), distal embolization (aOR = 2.71, 95% CI 1.51-4.86), and pre-procedural TIMI flow grade = 0 (aOR = 2.69, 95% CI 1.43-5.04) after adjusting for relevant clinical variables. Importantly, during a median follow-up of 1.7 years STEMI patients with SIH with or without diabetes experienced increased occurrence of MACCE both in univariate (HR = 1.92, 95% CI 1.19-3.01) and multivariate analysis (aHR = 1.802, 95% CI 1.01-3.21). CONCLUSIONS SIH in STEMI patients with or without diabetes was independently associated with increased MACCE. This could be attributed to the fact that SIH was strongly correlated with poor pre-procedural TIMI flow, LTB, and distal embolization. Large clinical trials need to validate SIH as an independent predictor of adverse angiographic and clinical outcomes to provide optimal individualized care for patients with STEMI.
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Affiliation(s)
- Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Innovation Area of Thessaloniki, 57001, Thermi, Greece
| | - Dimitrios Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Stylianos Daios
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Vasileios Anastasiou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Vasiliki Patsiou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Triantafyllia Koletsa
- Pathology Department, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - George Giannakoulas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece.
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Karagiannidis E, Moysidis DV, Papazoglou AS, Panteris E, Deda O, Stalikas N, Sofidis G, Kartas A, Bekiaridou A, Giannakoulas G, Gika H, Theodoridis G, Sianos G. Prognostic significance of metabolomic biomarkers in patients with diabetes mellitus and coronary artery disease. Cardiovasc Diabetol 2022; 21:70. [PMID: 35525960 PMCID: PMC9077877 DOI: 10.1186/s12933-022-01494-9] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 04/06/2022] [Indexed: 12/18/2022] Open
Abstract
Background Diabetes mellitus (DM) and coronary artery disease (CAD) constitute inter-related clinical entities. Biomarker profiling emerges as a promising tool for the early diagnosis and risk stratification of either DM or CAD. However, studies assessing the predictive capacity of novel metabolomics biomarkers in coexistent CAD and DM are scarce. Methods This post-hoc analysis of the CorLipid trial (NCT04580173) included 316 patients with CAD and comorbid DM who underwent emergency or elective coronary angiography due to acute or chronic coronary syndrome. Cox regression analyses were performed to identify metabolomic predictors of the primary outcome, which was defined as the composite of major adverse cardiovascular or cerebrovascular events (MACCE: cardiovascular death, myocardial infarction, stroke, major bleeding), repeat unplanned revascularizations and cardiovascular hospitalizations. Linear regression analyses were also performed to detect significant predictors of CAD complexity, as assessed by the SYNTAX score. Results After a median 2-year follow up period (IQR = 0.7 years), the primary outcome occurred in 69 (21.8%) of patients. Acylcarnitine ratio C4/C18:2, apolipoprotein (apo) B, history of heart failure (HF), age > 65 years and presence of acute coronary syndrome were independent predictors of the primary outcome in diabetic patients with CAD (aHR = 1.89 [1.09, 3.29]; 1.02 [1.01, 1.04]; 1.28 [1.01, 1.41]; 1.04 [1.01, 1.05]; and 1.12 [1.05–1.21], respectively). Higher levels of ceramide ratio C24:1/C24:0, acylcarnitine ratio C4/C18:2, age > 65 and peripheral artery disease were independent predictors of higher CAD complexity (adjusted β = 7.36 [5.74, 20.47]; 3.02 [0.09 to 6.06]; 3.02 [0.09, 6.06], respectively), while higher levels of apoA1 were independent predictors of lower complexity (adjusted β= − 0.65 [− 1.31, − 0.02]). Conclusions In patients with comorbid DM and CAD, novel metabolomic biomarkers and metabolomics-based prediction models could be recruited to predict clinical outcomes and assess the complexity of CAD, thereby enabling the integration of personalized medicine into routine clinical practice. These associations should be interpreted taking into account the observational nature of this study, and thus, larger trials are needed to confirm its results and validate them in different and larger diabetic populations.
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Affiliation(s)
- Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece.
| | - Dimitrios V Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle, University of Thessaloniki, Innovation Area of Thessaloniki, 57001, Thermi, Greece
| | - Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle, University of Thessaloniki, Innovation Area of Thessaloniki, 57001, Thermi, Greece
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Anastasios Kartas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Alexandra Bekiaridou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - George Giannakoulas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle, University of Thessaloniki, Innovation Area of Thessaloniki, 57001, Thermi, Greece
| | - George Theodoridis
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle, University of Thessaloniki, Innovation Area of Thessaloniki, 57001, Thermi, Greece.,Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece.
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Papathanasiou NN, Bismpas L, Panteris E, Konsta A, Diakogiannis II, Athanasiadis L. Depression and anxiety levels in a population of Greek male prisoners with a history of dependence. Journal of Substance Use 2022. [DOI: 10.1080/14659891.2022.2069611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Nestor N. Papathanasiou
- Psychiatrist MD Correctional Facility of Grevena, Grevena, Greece
- Researcher Toxicology Department Aristotle University of Thessaloniki, Greece. & Research Associate 1st Department of Psychiatry, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Lazaros Bismpas
- Psychiatrist MD Correctional Facility of Grevena, Grevena, Greece
| | - Eleftherios Panteris
- Researcher Toxicology Department Aristotle University of Thessaloniki, Greece. & Research Associate 1st Department of Psychiatry, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasia Konsta
- Researcher Toxicology Department Aristotle University of Thessaloniki, Greece. & Research Associate 1st Department of Psychiatry, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis I. Diakogiannis
- Researcher Toxicology Department Aristotle University of Thessaloniki, Greece. & Research Associate 1st Department of Psychiatry, Medical School, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Loukas Athanasiadis
- 3rd Department of Psychiatry, Medical School, Aristotle University of Thessaloniki, Greece
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Stalikas N, Doundoulakis I, Karagiannidis E, Kartas A, Gavriilaki M, Sofidis G, Panteris E, Papazoglou AS, Haidich AB, Sianos G, Giannakoulas G. Prevalence of markers of atrial cardiomyopathy in embolic stroke of undetermined source: A systematic review. Eur J Intern Med 2022; 99:38-44. [PMID: 35065879 DOI: 10.1016/j.ejim.2022.01.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 09/18/2021] [Revised: 01/05/2022] [Accepted: 01/12/2022] [Indexed: 12/18/2022]
Abstract
BACKGROUND Emerging evidence suggests the potential role of atrial cardiomyopathy (AC) as a direct thromboembolic determinant in embolic stroke of undetermined source (ESUS). OBJECTIVE We aimed to quantify the prevalence of potential AC markers among ESUS, non-cardioembolic (NCE) and cardioembolic (CE) stroke patients. METHODS PubMed and the Cochrane Central Register of Controlled Trials (CENTRAL) were searched for publications from inception to October 2021, with duplicate data extraction and risk of bias assessment. The Newcastle-Ottawa assessment scale was used to evaluate study quality. RESULTS Among 398 screened studies, 11 observational studies with 2009 ESUS patients (mean age 66.5 years) fulfilled the inclusion criteria. Of electrocardiographic markers, increased P-wave terminal force in lead V1 was more prevalent in ESUS vs NCE (OR=2.26, 95%CI: 1.40-3.66). Of imaging markers, left atrial volume index (LAVI) and left atrial diameter (LAd) were higher in ESUS vs NCE (OR=1.04, 95%CI: 1.02-1.06 and OR=3.41, 95%CI: 1.35-8.61 respectively). Non-chicken wing morphology of the left atrial appendage was more frequent in ESUS compared to NCE patients in the majority of studies. Of serum biomarkers, the prevalence of NT-proBNP >250 pg/ml did not differ among ESUS vs NCE (OR=0.73, 95%CI: 0.39 -1.35). CONCLUSIONS Electrocardiographic, echocardiographic markers and advanced imaging modalities able to assess the morphologic characteristics of left atrial appendage and left atrial function may be important tools to discriminate AC among ESUS vs NCE stroke patients. Prospective studies exploring the association of potential AC markers with ESUS occurrence are warranted to validate their clinical utility.
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Key Words
- AC, Atrial Cardiomyopathy
- Atrial cardiomyopathy
- CE, cardioembolic
- CS, Cryptogenic Stroke
- ESUS, Embolic Strokes of Undetermined Source
- Embolic strokes of undetermined source
- Epidemiology
- LAA, Left atrial appendage
- LAE, Left atrial enlargement
- LAVI, Left Atrial Volume Index
- LAd, Left atrial diameter
- Markers
- NCE, non-cardioembolic
- NCW, non-chicken wing
- Nonstandard Abbreviations and Acronyms
- PTFV1, P-wave terminal force in V1
- Systematic review
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Affiliation(s)
- Nikolaos Stalikas
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece; Department of Cardiology, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Ioannis Doundoulakis
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece; Department of Cardiology, 424 General Military Training Hospital, Thessaloniki, Greece
| | - Efstratios Karagiannidis
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasios Kartas
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Maria Gavriilaki
- First Department of Neurology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Sofidis
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Eleftherios Panteris
- Biomic_Auth, Bioanalysis and Omics Lab, Centre for Interdisciplinary Research of Aristotle University of Thessaloniki, Innovation Area of Thessaloniki, Greece
| | - Andreas S Papazoglou
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anna-Bettina Haidich
- Department of Hygiene, Social-Preventive Medicine & Medical Statistics, Medical School, Aristotle University of Thessaloniki, Greece
| | - Georgios Sianos
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Giannakoulas
- Department of Cardiology, AHEPA Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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Deda O, Panteris E, Meikopoulos T, Begou O, Mouskeftara T, Karagiannidis E, Papazoglou AS, Sianos G, Theodoridis G, Gika H. Correlation of Serum Acylcarnitines with Clinical Presentation and Severity of Coronary Artery Disease. Biomolecules 2022; 12:biom12030354. [PMID: 35327546 PMCID: PMC8945505 DOI: 10.3390/biom12030354] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 12/06/2021] [Revised: 02/18/2022] [Accepted: 02/21/2022] [Indexed: 12/23/2022] Open
Abstract
Recent studies support that acylcarnitines exert a significant role in cardiovascular disease development and progression. The aim of this metabolomics-based study was to investigate the association of serum acylcarnitine levels with coronary artery disease (CAD) severity, as assessed via SYNTAX Score. Within the context of the prospective CorLipid trial (NCT04580173), the levels of 13 circulating acylcarnitines were accurately determined through a newly developed HILIC-MS/MS method in 958 patients undergoing coronary angiography in the AHEPA University Hospital of Thessaloniki, Greece. Patients presenting with acute coronary syndrome had significantly lower median acylcarnitine C8, C10, C16, C18:1 and C18:2 values, compared to patients with chronic coronary syndrome (p = 0.012, 0.007, 0.018, 0.011 and <0.001, respectively). Among CAD subgroups, median C5 levels were significantly decreased in unstable angina compared to STEMI (p = 0.026), while median C10, C16, C18:1 and C18:2 levels were higher in stable angina compared to STEMI (p = 0.019 p = 0.012, p = 0.013 and p < 0.001, respectively). Moreover, median C2, C3, C4 and C8 levels were significantly elevated in patients with diabetes mellitus (p < 0.001, <0.001, 0.029 and 0.011, respectively). Moreover, short-chain acylcarnitine C2, C4, C5 and C6 levels were elevated in patients with heavier calcification and lower left ventricular ejection fraction (LVEF) % (all p-values less than 0.05). With regard to CAD severity, median C4 and C5 levels were elevated and C16 and C18:2 levels were reduced in the high CAD complexity group with SYNTAX Score > 22 (p = 0.002, 0.024, 0.044 and 0.012, respectively), indicating a potential prognostic capability of those metabolites and of the ratio C4/C18:2 for the prediction of CAD severity. In conclusion, serum acylcarnitines could serve as clinically useful biomarkers leading to a more individualized management of patients with CAD, once further clinically oriented metabolomics-based studies provide similar evidence.
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Affiliation(s)
- Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
- Correspondence: (O.D.); (E.P.); (H.G.)
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
- Correspondence: (O.D.); (E.P.); (H.G.)
| | - Thomas Meikopoulos
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Olga Begou
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Thomai Mouskeftara
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (G.S.)
| | - Andreas S. Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (G.S.)
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (G.S.)
| | - Georgios Theodoridis
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation, Aristotle University of Thessaloniki, 57001 Thessaloniki, Greece; (T.M.); (O.B.); (G.T.)
- Correspondence: (O.D.); (E.P.); (H.G.)
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Avlogiari E, Karagiannaki SM, Panteris E, Konsta A, Diakogiannis I. Improvement of Medical Students’ Empathy Levels After an Intensive Experiential Training on Empathy Skills. PSYCHIAT CLIN PSYCH 2021. [DOI: 10.5152/pcp.2021.21089] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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12
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Bompoti A, Papazoglou AS, Moysidis DV, Otountzidis N, Karagiannidis E, Stalikas N, Panteris E, Ganesh V, Sanctuary T, Arvanitidis C, Sianos G, Michaelson JS, Herrmann MD. Volumetric Imaging of Lung Tissue at Micrometer Resolution: Clinical Applications of Micro-CT for the Diagnosis of Pulmonary Diseases. Diagnostics (Basel) 2021; 11:diagnostics11112075. [PMID: 34829422 PMCID: PMC8625264 DOI: 10.3390/diagnostics11112075] [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: 09/17/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022] Open
Abstract
Micro-computed tomography (micro-CT) is a promising novel medical imaging modality that allows for non-destructive volumetric imaging of surgical tissue specimens at high spatial resolution. The aim of this study is to provide a comprehensive assessment of the clinical applications of micro-CT for the tissue-based diagnosis of lung diseases. This scoping review was conducted in accordance with the PRISMA Extension for Scoping Reviews, aiming to include every clinical study reporting on micro-CT imaging of human lung tissues. A literature search yielded 570 candidate articles, out of which 37 were finally included in the review. Of the selected studies, 9 studies explored via micro-CT imaging the morphology and anatomy of normal human lung tissue; 21 studies investigated microanatomic pulmonary alterations due to obstructive or restrictive lung diseases, such as chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, and cystic fibrosis; and 7 studies examined the utility of micro-CT imaging in assessing lung cancer lesions (n = 4) or in transplantation-related pulmonary alterations (n = 3). The selected studies reported that micro-CT could successfully detect several lung diseases providing three-dimensional images of greater detail and resolution than routine optical slide microscopy, and could additionally provide valuable volumetric insight in both restrictive and obstructive lung diseases. In conclusion, micro-CT-based volumetric measurements and qualitative evaluations of pulmonary tissue structures can be utilized for the clinical management of a variety of lung diseases. With micro-CT devices becoming more accessible, the technology has the potential to establish itself as a core diagnostic imaging modality in pathology and to enable integrated histopathologic and radiologic assessment of lung cancer and other lung diseases.
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Affiliation(s)
- Andreana Bompoti
- Department of Radiology, Peterborough City Hospital, Northwest Anglia NHS Foundation Trust, Peterborough PE3 9GZ, UK;
| | - Andreas S. Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Dimitrios V. Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Nikolaos Otountzidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - Eleftherios Panteris
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center B1.4, 10th km Thessaloniki-Thermi Rd., P.O. Box 8318, GR 57001 Thessaloniki, Greece;
| | | | - Thomas Sanctuary
- Respiratory Department, Medway NHS Foundation Trust, Kent ME7 5NY, UK;
| | - Christos Arvanitidis
- Hellenic Centre for Marine Research (HCMR), Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), 70013 Heraklion, Greece;
- LifeWatch ERIC, Sector II-II, Plaza de España, 41071 Seville, Spain
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (A.S.P.); (D.V.M.); (N.O.); (E.K.); (N.S.); (G.S.)
| | - James S. Michaelson
- Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA;
| | - Markus D. Herrmann
- Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA;
- Correspondence: ; Tel.: +6-17-724-1896
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13
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Karagiannidis E, Moysidis D, Papazoglou A, Panteris E, Deda O, Sofidis G, Stalikas N, Otountzidis N, Ballouri I, Gavana E, Gerou S, Gika H, Theodoridis G, Sianos G. Prognostic significance of novel serum biomarkers in patients with acute coronary syndrome. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1387] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
As oxygen and nutrient supply to the myocardium significantly decrease during ischemic periods, important changes occur regarding myocardial intermediary energy metabolism and metabolomic biomarkers.
Purpose
To identify patients at high risk for adverse cardiovascular (CV) events based on their metabolic signatures through combining clinical characteristics with established and novel biomarkers. Hence, we investigated the prognostic significance of protein biomarkers associated with CAD, namely Galectin-3, Adiponectin, Neutrophil gelatinase-associated lipocalin (NGAL) and Apolipoprotein B and A-1 (ApoB and A-1).
Methods
We conducted a sub-analysis of the Corlipid trial (NCT04580173) including patients who underwent coronary angiography in the cardiac catheterization laboratory of an academic tertiary hospital. Venous fasting blood samples were collected prior to coronary angiography and patients were followed-up for 12 months to record the occurrence of major adverse CV events. Galectin-3, adiponectin, NGAL and ApoB/A-1 ratio were measured by enzyme-linked immunosorbent assay (ELISA) in patients' venous blood samples. Serum concentrations were compared among CAD patient subgroups to assess the prognostic significance of these novel protein biomarkers in terms of cardiovascular mortality. Receiver operating characteristic (ROC) curves were also performed to calculate the corresponding area under the curve (AUC) for each biomarker and define their prognostic validity for patients with CAD.
Results
Out of 1140 total participants of the CorLipid trial, 534 patients with acute coronary syndrome (ACS) were finally included in the present analysis. Of them, 222 suffered from STEMI, 170 from NSTEMI and 141 from unstable angina. Higher ApoB/ApoA-1 and Galectin-3 serum concentrations were significantly linked with higher incidence of CV death in patients with NSTEMI during the one-year study follow up (p=0.049 and 0.027, respectively). Generated AUC of 0.713 (p=0.047) and 0.775 (p=0.002) indicate a potential utility in the quantification of those proteins as predictors of CV death in patients with NSTEMI. Analysis of serum adiponectin values did not yield any significant outcome (p>0.05). Lower NGAL concentrations were significantly correlated with CV death in patients with STEMI (p<0.001). The corresponding AUC of 0.824 (p=0.003) demonstrated that NGAL could be a prognostic biomarker of great sensitivity and specificity, potently capable to identify STEMI patients with increased risk of CV mortality.
Conclusion(s)
In patients with ACS, higher values of serum ApoB/ApoA-I and Galectin-3, as well as low NGAL concentrations were associated with higher prevalence of CV death in specific patient subgroups. Therefore, these serum biomarkers could be utilized for early risk-stratification and a more individualized approach in patients with ACS. Larger trials are warranted to confirm and bolster the significance and generalizability of our findings.
Funding Acknowledgement
Type of funding sources: Public grant(s) – EU funding. Main funding source(s): The specific project has been co-financed through the call for Proposals for the Action “Competitiveness, entrepreneurship & innovation” in the framework of the Operational Programme “Research, Create, Innovate” (project code: T1EDK-04005) of the Partnership Agreement for the Development Programme 2014-2020 by the European Social Fund (ESF) and Greek National funds. The project has undergone peer review and has been approved for funding, being awarded a grant of €873,821.00. The funder had no role in the design or conduct of the study, preparation, review or approval of the manuscript and decision to submit the manuscript for publication.
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Affiliation(s)
- E Karagiannidis
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
| | - D Moysidis
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
| | - A Papazoglou
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
| | - E Panteris
- Aristotle University of Thessaloniki, Laboratory of Forensic Medicine and Toxicology, Thessaloniki, Greece
| | - O Deda
- Aristotle University of Thessaloniki, Laboratory of Analytical Chemistry, Department of Chemistry, Thessaloniki, Greece
| | - G Sofidis
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
| | - N Stalikas
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
| | - N Otountzidis
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
| | - I Ballouri
- Private Practice in Thessaloniki, Analysis Medical S.A., Diagnostic - Research Clinics, Thessaloniki, Greece
| | - E Gavana
- Private Practice in Thessaloniki, Analysis Medical S.A., Diagnostic - Research Clinics, Thessaloniki, Greece
| | - S Gerou
- Private Practice in Thessaloniki, Analysis Medical S.A., Diagnostic - Research Clinics, Thessaloniki, Greece
| | - H Gika
- Aristotle University of Thessaloniki, Laboratory of Forensic Medicine and Toxicology, Thessaloniki, Greece
| | - G Theodoridis
- Aristotle University of Thessaloniki, Laboratory of Analytical Chemistry, Department of Chemistry, Thessaloniki, Greece
| | - G Sianos
- Ahepa General Hospital of Aristotle University, Department of Cardiology, Thessaloniki, Greece
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Kondou A, Dotis J, Karava V, Begou O, Taparkou A, Panteris E, Gkika H, Theodoridis G, Printza N. MO1011IDENTIFICATION OF EARLY BIOMARKERS OF PERITONEAL MEMBRANE DYSFUNCTION IN CHILDREN ON PERITONEAL DIALYSIS USING METABOLOMICS ANALYSIS -PRELIMINARY RESULTS OF AN ONGOING PROSPECTIVE STUDY. Nephrol Dial Transplant 2021. [DOI: 10.1093/ndt/gfab108.008] [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: 11/12/2022] Open
Abstract
Abstract
Background and Aims
Peritoneal dialysis (PD) are the main renal replacement treatment for children and adolescents with end stage kidney disease (ESRD). Peritoneal fibrosis is a major complication in long-term PD patients. Aim of the present study is to record the metabolic "fingerprint" of children on PD and to investigate its correlation with PD history and dialysis adequacy as well as the emergence of potential biomarkers that could detect early or predict peritoneal dysfunction.
Method
Samples of serum, urine and peritoneal effluent collected from 15 children with ESRD on PD. At the same time and 6 months later was performed PET-test as well as assessment of KT/V and creatinine clearance. Samples were subjected to targeted metabolomic analysis of amino acids and derivatives. Regarding metabolic technologies used, all samples (peritoneal fluid, urine, blood) were analyzed by a hydrophilic interaction liquid chromatography coupled to mass spectrometry (HILIC-MS / MS) method previously developed and validated in our laboratory for the simultaneous determination of amino acids and their derivatives in biological fluids. Αalso, high flow analysis was carried out (LC-q-tof analysis – HPLC /MS ).
Results
Using (HILIC-MS / MS) method, we found out that peritoneal dialysis duration, presence or absence of diuresis and PD creatinine clearance values are associated with significant differences in the levels of several metabolites, including glycine, creatinine, proline and 4-hydroxyproline, leucine, valine, glutamine and glutamic acid. Using (LC-q-tof analysis – HPLC /MS) approximately 200 metabolites were analyzed in the aforementioned samples. Figure 1 illustrates the number of metabolites detected in each matrix, as well as the common metabolites between the three matrices. These metabolites were associated with peritoneal dialysis duration, creatine clearance and presence or absence of diuresis. Several metabolites showed statistical difference between the examined groups. In detail, regarding serum analysis, five metabolites, including hydroxy phenyl acetic acid, glutathione ox, glucosamine-6-P, indole acetic acid and riboflavin showed statistical difference between the examined groups based on PD vintage. Based on urine excretion four metabolites named histidine, shikimic acid, thiamine and methionine were statistically different. Concerning urine analysis, two metabolites namely uridine and itaconic acid showed statistical difference when patients sub grouped based on PD vintage. Peritoneal fluid analysis highlighted one metabolite, uridine, that levels are significantly lower in patients on PD therapy for more than 4 years while based on creatinine clearance levels subgroups, two metabolites, lactate and pantothenic acid present statistically significant difference.
Conclusion
Metabolomics may be a tool in the evaluation of patients with ESRD on PD as it appears to reflect the clinical phenotype of the patient and the functional phenotype of the peritoneal membrane. Our results are the preliminary results of an ongoing prospective study. Limitation of the study is the small sample of patients, which does not allow safe clinical interpretation.
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Affiliation(s)
- Antonia Kondou
- Aristotle University of Thessaloniki, 1st Department of Pediatrics, Pediatrics Nephrology Unit, General Hospital of Thessaloniki, Hippokration, Thessaloniki, Greece
| | - John Dotis
- Aristotle University of Thessaloniki, 1st Department of Pediatrics, Pediatrics Nephrology Unit, General Hospital of Thessaloniki, Hippokration, Thessaloniki, Greece
| | - Vasiliki Karava
- Aristotle University of Thessaloniki, 1st Department of Pediatrics, Pediatrics Nephrology Unit, General Hospital of Thessaloniki, Hippokration, Thessaloniki, Greece
| | - Olga Begou
- Aristotle University of Thessaloniki, Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anna Taparkou
- Aristotle University of Thessaloniki, 1st Department of Pediatrics, Pediatrics Nephrology Unit, General Hospital of Thessaloniki, Hippokration, Thessaloniki, Greece
| | - Eleftherios Panteris
- Aristotle University of Thessaloniki, Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Helen Gkika
- Aristotle University of Thessaloniki, Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Theodoridis
- Aristotle University of Thessaloniki, Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nikoleta Printza
- Aristotle University of Thessaloniki, 1st Department of Pediatrics, Pediatrics Nephrology Unit, General Hospital of Thessaloniki, Hippokration, Thessaloniki, Greece
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Sofidis G, Otountzidis N, Stalikas N, Karagiannidis E, Papazoglou AS, Moysidis DV, Panteris E, Deda O, Kartas A, Zegkos T, Daskalaki P, Theodoridou N, Stefanopoulos L, Karvounis H, Gika H, Theodoridis G, Sianos G. Association of GRACE Risk Score with Coronary Artery Disease Complexity in Patients with Acute Coronary Syndrome. J Clin Med 2021; 10:2210. [PMID: 34065227 PMCID: PMC8160761 DOI: 10.3390/jcm10102210] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 05/11/2021] [Accepted: 05/17/2021] [Indexed: 12/25/2022] Open
Abstract
The GRACE score constitutes a useful tool for risk stratification in patients with acute coronary syndrome (ACS), while the SYNTAX score determines the complexity of coronary artery disease (CAD). This study sought to correlate these scores and assess the accuracy of the GRACE score in predicting the extent of CAD. A total of 539 patients with ACS undergoing coronary angiography were included in this analysis. The patients were classified into those with a SYNTAX score < 33 and a SYNTAX score ≥ 33. Spearman's correlation and receiver operator characteristic analysis were conducted to investigate the role of the GRACE score as a predictor of the SYNTAX score. There was a significantly positive correlation between the SYNTAX and the GRACE scores (r = 0.32, p < 0.001). The GRACE score predicted severe CAD (SYNTAX ≥ 33) moderately well (the area under the curve was 0.595 (0.522-0.667)). A GRACE score of 126 was documented as the optimal cut-off for the prediction of a SYNTAX score ≥ 33 (sensitivity = 53.5% and specificity = 66%). Therefore, our study reports a significantly positive correlation between the GRACE and the SYNTAX score in patients with ACS. Notably, NSTEMI patients with a high-risk coronary anatomy have higher calculated GRACE scores. A multidisciplinary approach by a heart team could possibly alter the therapeutic approach and management in patients presenting with ACS and a high calculated GRACE score.
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Affiliation(s)
- Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Nikolaos Otountzidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Andreas S. Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Dimitrios V. Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.P.); (O.D.); (H.G.)
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece;
| | - Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.P.); (O.D.); (H.G.)
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece;
| | - Anastasios Kartas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Thomas Zegkos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Paraskevi Daskalaki
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Niki Theodoridou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Leandros Stefanopoulos
- Lab of Computing, Medical Informatics and Biomedical Imaging Technologies, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece;
| | - Haralambos Karvounis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (E.P.); (O.D.); (H.G.)
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece;
| | - Georgios Theodoridis
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece;
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (G.S.); (N.O.); (N.S.); (E.K.); (A.S.P.); (D.V.M.); (A.K.); (T.Z.); (P.D.); (N.T.); (H.K.)
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16
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Papazoglou AS, Karagiannidis E, Moysidis DV, Sofidis G, Bompoti A, Stalikas N, Panteris E, Arvanitidis C, Herrmann MD, Michaelson JS, Sianos G. Current clinical applications and potential perspective of micro-computed tomography in cardiovascular imaging: A systematic scoping review. Hellenic J Cardiol 2021; 62:399-407. [PMID: 33991670 DOI: 10.1016/j.hjc.2021.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 02/01/2021] [Revised: 03/20/2021] [Accepted: 04/20/2021] [Indexed: 02/06/2023] Open
Abstract
Micro-computed tomography (micro-CT) constitutes an emerging imaging technique, which can be utilized in cardiovascular medicine to study in-detail the microstructure of heart and vessels. This paper aims to systematically review the clinical utility of micro-CT in cardiovascular imaging and propose future applications of micro-CT imaging in cardiovascular research. A systematic scoping review was conducted by searching for original studies written in English according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) extension for scoping reviews. Medline, Scopus, ClinicalTrials.gov, and the Cochrane library were systematically searched through December 11, 2020 to identify publications concerning micro-CT applications in cardiovascular imaging. Preclinical-animal studies and case reports were excluded. The Newcastle-Ottawa assessment scale for observational studies was used to evaluate study quality. In total, the search strategy identified 30 studies that report on micro-CT-based cardiovascular imaging and satisfy our eligibility criteria. Across all included studies, the total number of micro-CT scanned specimens was 1,227. Six studies involved postmortem 3D-reconstruction of congenital heart defects, while eleven studies described atherosclerotic vessel (coronary or carotid) characteristics. Thirteen other studies employed micro-CT for the assessment of medical devices (mainly stents or prosthetic valves). In conclusion, micro-CT is a novel imaging modality, effectively adapted for the 3D visualization and analysis of cardiac soft tissues and devices at high spatial resolution. Its increasing use could make significant contributions to our improved understanding of the histopathophysiology of cardiovascular diseases, and, thus, has the potential to optimize interventional procedures and technologies, and ultimately improve patient outcomes.
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Affiliation(s)
- Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Dimitrios V Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | | | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Eleftherios Panteris
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, Thessaloniki, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, GR 57001, Greece
| | - Christos Arvanitidis
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), Heraklion, Crete, 70013, Greece; LifeWatch ERIC, Sector II-II, Plaza de España, 41071, Seville, Spain
| | - Markus D Herrmann
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, USA
| | - James S Michaelson
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, USA
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece.
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17
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Karagiannidis E, Papazoglou AS, Sofidis G, Chatzinikolaou E, Keklikoglou K, Panteris E, Kartas A, Stalikas N, Zegkos T, Girtovitis F, Moysidis DV, Stefanopoulos L, Koupidis K, Hadjimiltiades S, Giannakoulas G, Arvanitidis C, Michaelson JS, Karvounis H, Sianos G. Micro-CT-Based Quantification of Extracted Thrombus Burden Characteristics and Association With Angiographic Outcomes in Patients With ST-Elevation Myocardial Infarction: The QUEST-STEMI Study. Front Cardiovasc Med 2021; 8:646064. [PMID: 33969012 PMCID: PMC8096895 DOI: 10.3389/fcvm.2021.646064] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 12/24/2020] [Accepted: 02/22/2021] [Indexed: 01/10/2023] Open
Abstract
Background: Angiographic detection of thrombus in STEMI is associated with adverse outcomes. However, routine thrombus aspiration failed to demonstrate the anticipated benefit. Hence, management of high coronary thrombus burden remains challenging. We sought to assess for the first time extracted thrombotic material characteristics utilizing micro-computed tomography (micro-CT). Methods: One hundred thirteen STEMI patients undergoing thrombus aspiration were enrolled. Micro-CT was undertaken to quantify retrieved thrombus volume, surface, and density. Correlation of these indices with angiographic and electrocardiographic outcomes was performed. Results: Mean aspirated thrombus volume, surface, and density (±standard deviation) were 15.71 ± 20.10 mm3, 302.89 ± 692.54 mm2, and 3139.04 ± 901.88 Hounsfield units, respectively. Aspirated volume and surface were significantly higher (p < 0.001) in patients with higher angiographic thrombus burden. After multivariable analysis, independent predictors for thrombus volume were reference vessel diameter (RVD) (p = 0.011), right coronary artery (RCA) (p = 0.039), and smoking (p = 0.027), whereas RVD (p = 0.018) and RCA (p = 0.019) were predictive for thrombus surface. Thrombus volume and surface were independently associated with distal embolization (p = 0.007 and p = 0.028, respectively), no-reflow phenomenon (p = 0.002 and p = 0.006, respectively), and angiographically evident residual thrombus (p = 0.007 and p = 0.002, respectively). Higher thrombus density was correlated with worse pre-procedural TIMI flow (p < 0.001). Patients with higher aspirated volume and surface developed less ST resolution (p = 0.042 and p = 0.023, respectively). Conclusions: Angiographic outcomes linked with worse prognosis were more frequent among patients with larger extracted thrombus. Despite retrieving larger thrombus load in these patients, current thrombectomy devices fail to deal with thrombotic material adequately. Further studies of novel thrombus aspiration technologies are warranted to improve patient outcomes. Clinical Trial Registration: QUEST-STEMI trial ClinicalTrials.gov number: NCT03429608 Date of registration: February 12, 2018. The study was prospectively registered.
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Affiliation(s)
- Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Evangelia Chatzinikolaou
- Hellenic Centre for Marine Research, Institute of Marine Biology, Biotechnology, and Aquaculture, Heraklion, Greece
| | - Kleoniki Keklikoglou
- Hellenic Centre for Marine Research, Institute of Marine Biology, Biotechnology, and Aquaculture, Heraklion, Greece.,Biology Department, University of Crete, Heraklion, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Anastasios Kartas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Thomas Zegkos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | | | - Dimitrios V Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Leandros Stefanopoulos
- Lab of Computing, Medical Informatics, and Biomedical Imaging Technologies, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kleanthis Koupidis
- School of Mathematics, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stavros Hadjimiltiades
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - George Giannakoulas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Christos Arvanitidis
- Hellenic Centre for Marine Research, Institute of Marine Biology, Biotechnology, and Aquaculture, Heraklion, Greece.,LifeWatch ERIC, Sector II-II, Seville, Spain
| | - James S Michaelson
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, United States
| | - Haralambos Karvounis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
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18
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Karagiannidis E, Sofidis G, Papazoglou AS, Deda O, Panteris E, Moysidis DV, Stalikas N, Kartas A, Papadopoulos A, Stefanopoulos L, Karvounis H, Gika H, Theodoridis G, Sianos G. Correlation of the severity of coronary artery disease with patients' metabolic profile- rationale, design and baseline patient characteristics of the CorLipid trial. BMC Cardiovasc Disord 2021; 21:79. [PMID: 33557756 PMCID: PMC7869241 DOI: 10.1186/s12872-021-01865-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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: 12/01/2020] [Accepted: 01/13/2021] [Indexed: 02/06/2023] Open
Abstract
Background Coronary artery disease (CAD) remains one of the leading causes of mortality and morbidity worldwide. As oxygen and nutrient supply to the myocardium significantly decrease during ischemic periods, important changes occur regarding myocardial intermediary energy metabolism. Metabolomics is an emerging field in systems biology, which quantifies metabolic changes in response to disease progression. This study aims to evaluate the diagnostic utility of plasma metabolomics-based biomarkers for determining the complexity and severity of CAD, as it is assessed via the SYNTAX score. Methods Corlipid is a prospective, non-interventional cohort trial empowered to enroll 1065 patients with no previous coronary intervention history, who undergo coronary angiography in University Hospital AHEPA, Thessaloniki. Venous blood samples are collected before coronary angiography. State-of the-art analytical methods are performed to calculate the serum levels of novel biomarkers: ceramides, acyl-carnitines, fatty acids, and proteins such as galectin-3, adiponectin, and the ratio of apolipoprotein B/apolipoprotein A1. Furthermore, all patients will be categorized based on the indication for coronary angiography (acute coronary syndrome, chronic coronary syndrome, preoperative coronary angiography) and on the severity of CAD using the SYNTAX score. Follow-up of 12 months after enrollment will be performed to record the occurrence of major adverse cardiovascular events. A risk prediction algorithm will be developed by combining clinical characteristics with established and novel biomarkers to identify patients at high risk for complex CAD based on their metabolite signatures. The first patient was enrolled in July 2019 and completion of enrollment is expected until May 2021. Discussion CorLipid is an ongoing trial aiming to investigate the correlation between metabolic profile and complexity of coronary artery disease in a cohort of patients undergoing coronary angiography with the potential to suggest a decision-making tool with high discriminative power for patients with CAD. To our knowledge, Corlipid is the first study aspiring to create an integrative metabolomic biomarkers-based algorithm by combining metabolites from multiple classes, involved in a wide range of pathways with well-established biochemical markers. Trial registration CorLipid trial registration: ClinicalTrials.gov number: NCT04580173. Registered 8 October 2020—Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT04580173.
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Affiliation(s)
- Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Andreas S Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation Aristotle University of Thessaloniki, 57001, Thessaloniki, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation Aristotle University of Thessaloniki, 57001, Thessaloniki, Greece
| | - Dimitrios V Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Anastasios Kartas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Anastasios Papadopoulos
- 1St Propaedeutic Internal Medicine Department, AHEPA Hospital Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Leandros Stefanopoulos
- Lab of Computing, Medical Informatics and Biomedical Imaging Technologies, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece
| | - Haralambos Karvounis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece
| | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124, Thessaloniki, Greece.,Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation Aristotle University of Thessaloniki, 57001, Thessaloniki, Greece
| | - Georgios Theodoridis
- Biomic_AUTh, CIRI-AUTH Center for Interdisciplinary Research and Innovation Aristotle University of Thessaloniki, 57001, Thessaloniki, Greece.,Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636, Thessaloniki, Greece.
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19
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Karagiannidis E, Papazoglou AS, Stalikas N, Deda O, Panteris E, Begou O, Sofidis G, Moysidis DV, Kartas A, Chatzinikolaou E, Keklikoglou K, Bompoti A, Gika H, Theodoridis G, Sianos G. Serum Ceramides as Prognostic Biomarkers of Large Thrombus Burden in Patients with STEMI: A Micro-Computed Tomography Study. J Pers Med 2021; 11:jpm11020089. [PMID: 33572568 PMCID: PMC7911549 DOI: 10.3390/jpm11020089] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [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: 01/04/2021] [Revised: 01/21/2021] [Accepted: 01/28/2021] [Indexed: 12/17/2022] Open
Abstract
ST-elevation myocardial infarction (STEMI) remains one of the leading causes of mortality worldwide. The identification of novel metabolic and imaging biomarkers could unveil key pathophysiological mechanisms at the molecular level and promote personalized care in patients with acute coronary syndromes. We studied 38 patients with STEMI who underwent primary percutaneous coronary intervention and thrombus aspiration. We sought to correlate serum ceramide levels with micro-CT quantified aspirated thrombus volume and relevant angiographic outcomes, including modified TIMI thrombus grade and pre- or post-procedural TIMI flow. Higher ceramide C16:0 levels were significantly but weakly correlated with larger aspirated thrombus volume (Spearman r = 0.326, p = 0.046), larger intracoronary thrombus burden (TB; p = 0.030) and worse pre- and post-procedural TIMI flow (p = 0.049 and p = 0.039, respectively). Ceramides C24:0 and C24:1 were also significantly associated with larger intracoronary TB (p = 0.008 and p = 0.001, respectively). Receiver operating characteristic analysis demonstrated that ceramides C24:0 and C24:1 could significantly predict higher intracoronary TB (area under the curve: 0.788, 95% CI: 0.629-0.946 and 0.846, 95% CI: 0.706-0.985, respectively). In conclusion, serum ceramide levels were higher among patients with larger intracoronary and aspirated TB. This suggests that quantification of serum ceramides might improve risk-stratification of patients with STEMI and facilitate an individualized approach in clinical practice.
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Affiliation(s)
- Efstratios Karagiannidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
| | - Andreas S. Papazoglou
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
| | - Nikolaos Stalikas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
| | - Olga Deda
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (O.D.); (E.P.); (H.G.)
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece; (O.B.); (G.T.)
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (O.D.); (E.P.); (H.G.)
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece; (O.B.); (G.T.)
| | - Olga Begou
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece; (O.B.); (G.T.)
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece
| | - Georgios Sofidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
| | - Dimitrios V. Moysidis
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
| | - Anastasios Kartas
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
| | - Evangelia Chatzinikolaou
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), 71500 Heraklion, Crete, Greece; (E.C.); (K.K.)
| | - Kleoniki Keklikoglou
- Institute of Marine Biology, Biotechnology and Aquaculture (IMBBC), Hellenic Centre for Marine Research (HCMR), 71500 Heraklion, Crete, Greece; (E.C.); (K.K.)
- Biology Department, University of Crete, 71003 Heraklion, Crete, Greece
| | | | - Helen Gika
- Laboratory of Forensic Medicine and Toxicology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece; (O.D.); (E.P.); (H.G.)
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece; (O.B.); (G.T.)
| | - Georgios Theodoridis
- Biomic_AUTh, Center for Interdisciplinary Research and Innovation (CIRI-AUTH), Balkan Center, B1.4, 10th km Thessaloniki-Thermi Rd, P.O. Box 8318, 57001 Thessaloniki, Greece; (O.B.); (G.T.)
- Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece
| | - Georgios Sianos
- First Department of Cardiology, AHEPA University Hospital, Aristotle University of Thessaloniki, St. Kiriakidi 1, 54636 Thessaloniki, Greece; (E.K.); (A.S.P.); (N.S.); (G.S.); (D.V.M.); (A.K.)
- Correspondence: ; Tel.: +30-2310994837
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Pappas D, Gkelis S, Panteris E. The effects of microcystin-LR in Oryza sativa root cells: F-actin as a new target of cyanobacterial toxicity. Plant Biol (Stuttg) 2020; 22:839-849. [PMID: 32268449 DOI: 10.1111/plb.13120] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 03/26/2020] [Indexed: 05/26/2023]
Abstract
Microcystins are toxins produced by cyanobacteria, notorious for negatively affecting a wide range of living organisms, among which several plant species. Although microtubules are a well-established target of microcystin toxicity, its effect on filamentous actin (F-actin) in plant cells has not yet been studied. Τhe effects of microcystin-LR (MC-LR) and an extract of a microcystin-producing freshwater cyanobacterial strain (Microcystis flos-aquae TAU-MAC 1510) on the cytoskeleton (F-actin and microtubules) of Oryza sativa (rice) root cells were studied with light, confocal, and transmission electron microscopy. Considering the role of F-actin in endomembrane system distribution, the endoplasmic reticulum and the Golgi apparatus in extract-treated cells were also examined. F-actin in both MC-LR- and extract-treated meristematic and differentiating root cells exhibited time-dependent alterations, ranging from disorientation and bundling to the formation of ring-like structures, eventually resulting in a collapse of the F-actin network after longer treatments. Disorganization and eventual depolymerization of microtubules, as well as abnormal chromatin condensation were observed following treatment with the extract, effects which could be attributed to microcystins and other bioactive compounds. Moreover, cell cycle progression was inhibited in extract-treated roots, specifically affecting the mitotic events. As a consequence of F-actin network disorganization, endoplasmic reticulum elements appeared stacked and diminished, while Golgi dictyosomes appeared aggregated. These results support that F-actin is a prominent target of MC-LR, both in pure form and as an extract ingredient. Endomembrane system alterations can also be attributed to the effects of cyanobacterial bioactive compounds (including microcystins) on the F-actin cytoskeleton.
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Affiliation(s)
- D Pappas
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - S Gkelis
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - E Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Karayannopoulou G, Panteris E, Kanitakis J. Tumour Budding Is an Independent Predictive Factor of Cutaneous Squamous-cell Carcinoma Aggressiveness. Anticancer Res 2020; 40:2695-2699. [PMID: 32366414 DOI: 10.21873/anticanres.14240] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 03/31/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM Tumour budding (TB), i.e. the presence of groups of ≤5 tumour cells ahead of the invasive tumour front, is a pathological feature associated with an aggressive outcome in several cancer types. The aim of this study was to assess the value of TB as an independent prognostic factor of cutaneous squamous cell carcinomas (cSCC). MATERIALS AND METHODS We studied 25 cases of aggressive cSCC (defined as tumours that developed local recurrences and/or metastases after adequate excision) and 27 cases of non-aggressive cSCC. TB was expressed as the mean number of tumour buds in 5 adjacent high-power fields (HPF). RESULTS Statistical analysis showed that TB is an independent predictive factor of cSCC aggressiveness. When the cut-off value of 0.8 buds/HPF was considered, the positive and negative predictive values for cSCC aggressiveness reached 77.3% and 75.0%, respectively. CONCLUSION As with other cancer types, TB appears to be a new independent pathological factor of aggressiveness of cSCC, providing a new tool to predict cSCC outcome, similar to other already established features associated with an adverse outcome (such as tumour size).
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Affiliation(s)
- Georgia Karayannopoulou
- Department of Pathology, Faculty of Medicine, Aristotle University of Thessaloniki, University Hospital AHEPA, Thessaloniki, Greece
| | - Eleftherios Panteris
- Laboratory of Forensic Medicine & Toxicology, Faculty of Medicine Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Jean Kanitakis
- Department of Dermatology, Ed. Herriot Hospital Group, Lyon, France .,Department of Pathology, Lyon Sud Hospital, Pierre Bénite, France
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Chasapi A, Aivaliotis M, Angelis L, Chanalaris A, Iliopoulos I, Kappas I, Karapiperis C, Kyrpides NC, Pafilis E, Panteris E, Topalis P, Tsiamis G, Vizirianakis IS, Vlassi M, Promponas VJ, Ouzounis CA. Establishment of computational biology in Greece and Cyprus: Past, present, and future. PLoS Comput Biol 2019; 15:e1007532. [PMID: 31856214 PMCID: PMC6922331 DOI: 10.1371/journal.pcbi.1007532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Anastasia Chasapi
- Biological Computation & Process Lab, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, Thessalonica, Greece
| | - Michalis Aivaliotis
- School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessalonica, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, Heraklion, Greece
| | - Lefteris Angelis
- School of Informatics, Aristotle University of Thessaloniki, Thessalonica, Greece
| | - Anastasios Chanalaris
- Botnar Research Centre, NDORMS, Medical Sciences Division, University of Oxford, Oxford, United Kingdom
| | - Ioannis Iliopoulos
- Division of Basic Sciences, School of Medicine, University of Crete, Heraklion, Greece
| | - Ilias Kappas
- School of Biology, Aristotle University of Thessaloniki, Thessalonica, Greece
| | - Christos Karapiperis
- School of Informatics, Aristotle University of Thessaloniki, Thessalonica, Greece
| | - Nikos C. Kyrpides
- Department of Energy, Joint Genome Institute, Walnut Creek, California, United States of America
| | - Evangelos Pafilis
- Institute of Marine Biology Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, Greece
| | - Eleftherios Panteris
- First Psychiatric Clinic, Papageorgiou General Hospital, Aristotle University of Thessaloniki, Thessalonica, Greece
| | - Pantelis Topalis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology Hellas, Heraklion, Greece
| | - George Tsiamis
- Department of Environmental Engineering, School of Engineering, University of Patras, Patras, Greece
| | - Ioannis S. Vizirianakis
- Department of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, Thessalonica, Greece
| | - Metaxia Vlassi
- Institute of Biosciences & Applications, National Centre for Scientific Research Demokritos, Athens, Greece
| | - Vasilis J. Promponas
- Bioinformatics Research Laboratory, Department of Biological Sciences, University of Cyprus, Nicosia, Cyprus
- * E-mail: (VJP); (CAO)
| | - Christos A. Ouzounis
- Biological Computation & Process Lab, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, Thessalonica, Greece
- * E-mail: (VJP); (CAO)
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Apostolakos P, Livanos P, Giannoutsou E, Panteris E, Galatis B. The intracellular and intercellular cross-talk during subsidiary cell formation in Zea mays: existing and novel components orchestrating cell polarization and asymmetric division. Ann Bot 2018; 122:679-696. [PMID: 29346521 PMCID: PMC6215039 DOI: 10.1093/aob/mcx193] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 11/25/2017] [Indexed: 05/03/2023]
Abstract
Background Formation of stomatal complexes in Poaceae is the outcome of three asymmetric and one symmetric cell division occurring in particular leaf protodermal cells. In this definite sequence of cell division events, the generation of subsidiary cells is of particular importance and constitutes an attractive model for studying local intercellular stimulation. In brief, an induction stimulus emitted by the guard cell mother cells (GMCs) triggers a series of polarization events in their laterally adjacent protodermal cells. This signal determines the fate of the latter cells, forcing them to divide asymmetrically and become committed to subsidiary cell mother cells (SMCs). Scope This article summarizes old and recent structural and molecular data mostly derived from Zea mays, focusing on the interplay between GMCs and SMCs, and on the unique polarization sequence occurring in both cell types. Recent evidence suggests that auxin operates as an inducer of SMC polarization/asymmetric division. The intercellular auxin transport is facilitated by the distribution of a specific transmembrane auxin carrier and requires reactive oxygen species (ROS). Interestingly, the local differentiation of the common cell wall between SMCs and GMCs is one of the earliest features of SMC polarization. Leucine-rich repeat receptor-like kinases, Rho-like plant GTPases as well as the SCAR/WAVE regulatory complex also participate in the perception of the morphogenetic stimulus and have been implicated in certain polarization events in SMCs. Moreover, the transduction of the auxin signal and its function are assisted by phosphatidylinositol-3-kinase and the products of the catalytic activity of phospholipases C and D. Conclusion In the present review, the possible role(s) of each of the components in SMC polarization and asymmetric division are discussed, and an overall perspective on the mechanisms beyond these phenomena is provided.
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Affiliation(s)
- P Apostolakos
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - P Livanos
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - E Giannoutsou
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - E Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Macedonia, Greece
| | - B Galatis
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
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Sotiriou P, Giannoutsou E, Panteris E, Galatis B, Apostolakos P. Local differentiation of cell wall matrix polysaccharides in sinuous pavement cells: its possible involvement in the flexibility of cell shape. Plant Biol (Stuttg) 2018; 20:223-237. [PMID: 29247575 DOI: 10.1111/plb.12681] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 12/08/2017] [Indexed: 06/07/2023]
Abstract
The distribution of homogalacturonans (HGAs) displaying different degrees of esterification as well as of callose was examined in cell walls of mature pavement cells in two angiosperm and two fern species. We investigated whether local cell wall matrix differentiation may enable pavement cells to respond to mechanical tension forces by transiently altering their shape. HGA epitopes, identified with 2F4, JIM5 and JIM7 antibodies, and callose were immunolocalised in hand-made or semithin leaf sections. Callose was also stained with aniline blue. The structure of pavement cells was studied with light and transmission electron microscopy (TEM). In all species examined, pavement cells displayed wavy anticlinal cell walls, but the waviness pattern differed between angiosperms and ferns. The angiosperm pavement cells were tightly interconnected throughout their whole depth, while in ferns they were interconnected only close to the external periclinal cell wall and intercellular spaces were developed between them close to the mesophyll. Although the HGA epitopes examined were located along the whole cell wall surface, the 2F4- and JIM5- epitopes were especially localised at cell lobe tips. In fern pavement cells, the contact sites were impregnated with callose and JIM5-HGA epitopes. When tension forces were applied on leaf regions, the pavement cells elongated along the stretching axis, due to a decrease in waviness of anticlinal cell walls. After removal of tension forces, the original cell shape was resumed. The presented data support that HGA epitopes make the anticlinal pavement cell walls flexible, in order to reversibly alter their shape. Furthermore, callose seems to offer stability to cell contacts between pavement cells, as already suggested in photosynthetic mesophyll cells.
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Affiliation(s)
- P Sotiriou
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - E Giannoutsou
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - E Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - B Galatis
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - P Apostolakos
- Department of Botany, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
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Papageorgiou KV, Grivas I, Chiotelli M, Panteris E, Papaioannou N, Nauwynck H, Kritas SK. Myelin Sheath Development in the Maxillary Nerve of the Newborn Pig. Anat Histol Embryol 2016; 46:58-64. [PMID: 27194445 DOI: 10.1111/ahe.12234] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 04/15/2016] [Indexed: 01/26/2023]
Abstract
Myelination, the ensheathing of neuronal axons by myelin, is important for the proper function of both central and peripheral nervous systems. Various studies have investigated the quantitative parameters of myelination in certain species. Pigs are among the species of which their use as laboratory animals in neuroscience research increased the past few decades. However, there is limited data regarding the myelination process in the pig. Moreover, the maxillary nerve is crucial for Pseudorabies Virus (PrV) neuropathogenesis. In this context, a quantitative analysis of various myelination parameters of the maxillary nerve was performed, during the first 5 weeks of porcine post-natal development, the time period, which exhibits the highest interest for PrV neuropathogenesis. The evaluation was conducted in four groups of uninfected pigs, at the time of birth (group 0w), at the age of 1 week (group 1w), 3 weeks (group 3w) and 5 weeks (group 5w), using toluidine blue staining, immunofluorescence and electron microscopy. Axon and fibre diameter, perimeter and surface, myelin sheath thickness and g-ratio were measured on histological sections transverse to the longitudinal axis of the maxillary nerve. The thickness of myelin sheath was 0.76 μm for group 0w, 0.94 μm for group 1w, 0.98 μm for group 3w and 1.03 μm for group 5w. The g-ratio was 0.529, 0.540, 0.542 and 0.531 for the respective animal groups. The results of this study contribute to the understanding of the myelination process in the pig will be used for the study of PrV effects on the myelination development of newborn piglets' maxillary nerve and may shed new light to their vulnerability to the virus.
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Affiliation(s)
- K V Papageorgiou
- Department of Microbiology and Infectious Diseases, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Greece
| | - I Grivas
- Laboratory of Anatomy Histology, and Embryology, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Greece
| | - M Chiotelli
- Laboratory of Anatomy Histology, and Embryology, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Greece
| | - E Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, 54124, Greece
| | - N Papaioannou
- Department of Pathology, Faculty of Veterinary Medicine, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Greece
| | - H Nauwynck
- Laboratory of Virology, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - S K Kritas
- Department of Microbiology and Infectious Diseases, School of Health Sciences, Aristotle University of Thessaloniki, 54124, Greece
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Papasozomenou P, Athanasiadis AP, Zafrakas M, Panteris E, Loufopoulos A, Assimakopoulos E, Tarlatzis BC. Fetal nasal bone length in the second trimester: comparison between population groups from different ethnic origins. J Perinat Med 2016; 44:229-35. [PMID: 25503860 DOI: 10.1515/jpm-2014-0296] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2014] [Accepted: 11/10/2014] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To compare normal ranges of ultrasonographically measured fetal nasal bone length in the second trimester between different ethnic groups. METHOD A prospective, non-interventional study in order to establish normal ranges of fetal nasal bone length in the second trimester in a Greek population was conducted in 1220 singleton fetuses between 18 completed weeks and 23 weeks and 6 days of gestation. A literature search followed in order to identify similar studies in different population groups. Fetal nasal bone length mean values and percentiles from different population groups were compared. RESULTS Analysis of measurements in the Greek population showed a linear association, i.e., increasing nasal bone length with increasing gestational age from 5.73 mm at 18 weeks to 7.63 mm at 23 weeks. Eleven studies establishing normal ranges of fetal nasal bone length in the second trimester were identified. Comparison of fetal nasal bone length mean values between the 12 population groups showed statistically significant differences (P<0.0001). CONCLUSION Normal ranges of fetal nasal bone length in the second trimester vary significantly between different ethnic groups. Hence, distinct ethnic nomograms of fetal nasal bone length in the second trimester should be used in a given population rather than an international model.
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Sotiriou P, Giannoutsou E, Panteris E, Apostolakos P, Galatis B. Cell wall matrix polysaccharide distribution and cortical microtubule organization: two factors controlling mesophyll cell morphogenesis in land plants. Ann Bot 2016; 117:401-19. [PMID: 26802013 PMCID: PMC4765543 DOI: 10.1093/aob/mcv187] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/27/2015] [Accepted: 11/05/2015] [Indexed: 05/18/2023]
Abstract
BACKGROUND AND AIMS This work investigates the involvement of local differentiation of cell wall matrix polysaccharides and the role of microtubules in the morphogenesis of mesophyll cells (MCs) of three types (lobed, branched and palisade) in the dicotyledon Vigna sinensis and the fern Asplenium nidus. METHODS Homogalacturonan (HGA) epitopes recognized by the 2F4, JIM5 and JIM7 antibodies and callose were immunolocalized in hand-made leaf sections. Callose was also stained with aniline blue. We studied microtubule organization by tubulin immunofluorescence and transmission electron microscopy. RESULTS In both plants, the matrix cell wall polysaccharide distribution underwent definite changes during MC differentiation. Callose constantly defined the sites of MC contacts. The 2F4 HGA epitope in V. sinensis first appeared in MC contacts but gradually moved towards the cell wall regions facing the intercellular spaces, while in A. nidus it was initially localized at the cell walls delimiting the intercellular spaces, but finally shifted to MC contacts. In V. sinensis, the JIM5 and JIM7 HGA epitopes initially marked the cell walls delimiting the intercellular spaces and gradually shifted in MC contacts, while in A. nidus they constantly enriched MC contacts. In all MC types examined, the cortical microtubules played a crucial role in their morphogenesis. In particular, in palisade MCs, cortical microtubule helices, by controlling cellulose microfibril orientation, forced these MCs to acquire a truncated cone-like shape. Unexpectedly in V. sinensis, the differentiation of colchicine-affected MCs deviated completely, since they developed a cell wall ingrowth labyrinth, becoming transfer-like cells. CONCLUSIONS The results of this work and previous studies on Zea mays (Giannoutsou et al., Annals of Botany 2013; 112: : 1067-1081) revealed highly controlled local cell wall matrix differentiation in MCs of species belonging to different plant groups. This, in coordination with microtubule-dependent cellulose microfibril alignment, spatially controlled cell wall expansion, allowing MCs to acquire their particular shape.
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Affiliation(s)
- P Sotiriou
- Department of Botany, Faculty of Biology, University of Athens, Athens 15784, Greece and
| | - E Giannoutsou
- Department of Botany, Faculty of Biology, University of Athens, Athens 15784, Greece and
| | - E Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - P Apostolakos
- Department of Botany, Faculty of Biology, University of Athens, Athens 15784, Greece and
| | - B Galatis
- Department of Botany, Faculty of Biology, University of Athens, Athens 15784, Greece and
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Papasozomenou P, Athanasiadis AP, Zafrakas M, Panteris E, Mikos T, Daniilidis A, Loufopoulos A, Assimakopoulos E, Tarlatzis BC. Screening performance of different methods defining fetal nasal bone hypoplasia as a single and combined marker for the detection of trisomy 21 in the second trimester. J Matern Fetal Neonatal Med 2016; 29:3368-73. [PMID: 26635074 DOI: 10.3109/14767058.2015.1127344] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE To evaluate different methods of defining fetal nasal bone hypoplasia in the second trimester for the detection of trisomy 21. METHODS Prospective study in Greek women undergoing anomaly scan between 18 + 0 and 23 + 6 weeks. The following methods of defining nasal bone hypoplasia were evaluated, either as a single marker or in combination with others: (1) BPD to nasal bone length (NBL) ratio; (2) multiples of the median (MoM) of NBL, according to normal curves from a Greek population; (3-4) NBL < 2.5 percentile according to normal curves (3) commonly used internationally curves and (4) curves from a Greek population. RESULTS In total, 1301 singleton fetuses were evaluated - 10 with trisomy 21. The best detection rate of trisomy 21 was achieved when the applied method was nasal bone percentiles adjusted to maternal ethnicity, in combination with other markers (<2.5 percentile according to normal curves from a Greek population; p < 0.001; sensitivity 50%; specificity 94.8%; false-positive rate 5.2%; positive likelihood ratio 9.6). CONCLUSION Screening performance of fetal nasal bone hypoplasia in detecting trisomy 21 varies according to the method applied. The best screening performance is achieved by using percentiles adjusted to maternal ethnicity in combination with other markers of aneuploidy.
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Affiliation(s)
- Panayiota Papasozomenou
- a 1st Department of Obstetrics and Gynecology , Papageorgiou Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece .,b Prenatal Diagnostic Center of Thessaloniki , Thessaloniki , Greece
| | - Apostolos P Athanasiadis
- a 1st Department of Obstetrics and Gynecology , Papageorgiou Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece .,b Prenatal Diagnostic Center of Thessaloniki , Thessaloniki , Greece
| | - Menelaos Zafrakas
- a 1st Department of Obstetrics and Gynecology , Papageorgiou Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece .,c Research Laboratory , School of Health and Medical Care, Alexander Technological Institute of Thessaloniki , Thessaloniki , Greece , and
| | - Eleftherios Panteris
- c Research Laboratory , School of Health and Medical Care, Alexander Technological Institute of Thessaloniki , Thessaloniki , Greece , and
| | - Themistokles Mikos
- a 1st Department of Obstetrics and Gynecology , Papageorgiou Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Angelos Daniilidis
- d 2nd Department of Obstetrics and Gynecology , Hippokratio Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Aristoteles Loufopoulos
- d 2nd Department of Obstetrics and Gynecology , Hippokratio Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Efstratios Assimakopoulos
- d 2nd Department of Obstetrics and Gynecology , Hippokratio Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Basil C Tarlatzis
- a 1st Department of Obstetrics and Gynecology , Papageorgiou Hospital, Medical School, Aristotle University of Thessaloniki , Thessaloniki , Greece
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Papasozomenou P, Athanasiadis AP, Zafrakas M, Panteris E, Loufopoulos A, Assimakopoulos E, Tarlatzis BC. Three-dimensional versus two-dimensional ultrasound for fetal nasal bone evaluation in the second trimester. J Matern Fetal Neonatal Med 2015; 28:1432-7. [DOI: 10.3109/14767058.2014.955002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Panteris E, Adamakis IDS, Chanoumidou K. The distribution of TPX2 in dividing leaf cells of the fern Asplenium nidus. Plant Biol (Stuttg) 2013; 15:203-209. [PMID: 22672188 DOI: 10.1111/j.1438-8677.2012.00615.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Plant cell division requires the dynamic organisation of several microtubule arrays. The mechanisms of regulation of the above arrays are under rigorous research. Among several factors that are involved in plant microtubule dynamics, the Targeting Protein for Xklp2 (TPX2) has been found to play a role in spindle organisation, in combination with Aurora kinases, in dividing cells of angiosperms. Microtubule organisation in dividing cells of ferns exhibits certain peculiarities. Accordingly, the presence and distribution of a TPX2 homologue might be helpful in understanding the patterns and regulatory mechanisms of microtubule arrays in this plant group. In this study, a putative TPX2 homologue was identified using Western blotting in the fern Asplenium nidus. It was found, using immunostaining and CLSM, that it is co-localised with perinuclear preprophase microtubules and the prophase spindle, and follows the microtubule pattern during metaphase/anaphase and telophase. During cytokinesis, while in angiosperms TPX2 is degraded, in A. nidus the TPX2 signal persists, co-localising with the phragmoplast. In early post-cytokinetic cells, a TPX2 signal is present on the nuclear surface facing the daughter cell wall and, thereafter it is co-localised with the fern-specific microtubule aggregation that lines the new wall, which is possibly involved in cortical microtubule assembly.
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Affiliation(s)
- E Panteris
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Adamakis IDS, Panteris E, Eleftheriou EP. Tungsten affects the cortical microtubules of Pisum sativum root cells: experiments on tungsten-molybdenum antagonism. Plant Biol (Stuttg) 2010; 12:114-24. [PMID: 20653894 DOI: 10.1111/j.1438-8677.2009.00197.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Tungsten (W) is increasingly shown to be toxic to various organisms, including plants. Apart from inactivation of molybdo-enzymes, other potential targets of W toxicity in plants, especially at the cellular level, have not yet been revealed. In the present study, the effect of W on the cortical microtubule array of interphase root tip cells was investigated, in combination with the possible antagonism of W for the pathway of molybdenum (Mo). Pisum sativum seedlings were treated with W, Mo or a combination of the two, and cortical microtubules were examined using tubulin immunofluorescnce and TEM. Treatments with anti-microtubule (oryzalin, colchicine and taxol) or anti-actomyosin (cytochalasin D, BDM or ML-7) drugs and W were also performed. W-affected cortical microtubules were low in number, short, not uniformly arranged and were resistant to anti-microtubule drugs. Cells pre-treated with oryzalin or colchicine and then treated with W displayed W-affected microtubules, while cortical microtubules pre-stabilized with taxol were resistant to W. Treatment with Mo and anti-actomyosin drugs prevented W from affecting cortical microtubules. Cortical microtubule recovery after W treatment was faster in Mo solution than in water. The results indicate that cortical microtubules of plant cells are indirectly affected by W, most probably through a mechanism depending on the in vivo antagonism of W for the Mo-binding site of Cnx1 protein.
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Affiliation(s)
- I-D S Adamakis
- Department of Botany, School of Biology, Aristotle University of Thessaloniki, Thessaloniki, Greece
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Mori R, Xiong S, Wang Q, Tarabolous C, Shimada H, Panteris E, Danenberg KD, Danenberg PV, Pinski JK. Gene profiling and pathway analysis of neuroendocrine transdifferentiated prostate cancer cells. Prostate 2009; 69:12-23. [PMID: 18814146 DOI: 10.1002/pros.20851] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [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: 01/22/2023]
Abstract
BACKGROUND Neuroendocrine (NE) cells are present in both normal prostate and prostate cancer. In addition, NE differentiation can be induced by various factors, such as IL-6, in vitro and in vivo. However, the mechanism of this differentiation and the role of NE cells in prostate cancer are not well understood. In this study, we evaluated the gene expression and analyzed the pathways in prostate cancer cells exposed to various NE differentiation inducing factors in vitro. METHODS Gene expression signatures between control LNCaP cells and each treatment induced NE cell line were compared using Affymetrix GeneChip with network and pathway analysis. RESULTS All treatments were able to transdifferentiate LNCaP cells into NE phenotype as shown by morphology changes and NE marker measurements. Of the 54,675 oligonucleotide-based probe sets in microarray, 44,975 were mapped into the Ingenuity Pathway Analysis database and were filtered according to the t-test P value. At P < 0.002, the number of genes that were differentially expressed included 302 of the IL-6 treated cells, 201 of genistein, 233 of epinephrine, and 191 of the charcoal stripped serum ones. A pooled data approach also showed 346 differentially expressed genes at the same P value. Gene ontology analysis showed that cancer-related function had the highest significance. CONCLUSIONS Despite some overlap, each NE transdifferentiation inducing treatment was associated with a changed expression of a unique set of genes, and such gene profiling may help to elucidate the molecular mechanisms involved in NE transdifferentiation of prostate cancer cells.
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Affiliation(s)
- Ryutaro Mori
- Department of Medicine, Division of Medical Oncology, University of Southern California Keck School of Medicine, Los Angeles, California, USA
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Panteris E, Swift S, Payne A, Liu X. Mining pathway signatures from microarray data and relevant biological knowledge. J Biomed Inform 2007; 40:698-706. [PMID: 17395545 DOI: 10.1016/j.jbi.2007.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2006] [Revised: 01/05/2007] [Accepted: 01/31/2007] [Indexed: 10/23/2022]
Abstract
High-throughput technologies such as DNA microarray are in the process of revolutionizing the way modern biological research is being done. Bioinformatics tools are becoming increasingly important to assist biomedical scientists in their quest in understanding complex biological processes. Gene expression analysis has attracted a large amount of attention over the last few years mostly in the form of algorithms, exploring cluster and regulatory relationships among genes of interest, and programs that try to display the multidimensional microarray data in appropriate formats so that they make biological sense. To reduce the dimensionality of microarray data and make the corresponding analysis more biologically relevant, in this paper we propose a biologically-led approach to biochemical pathway analysis using microarray data and relevant biological knowledge. The method selects a subset of genes for each pathway that describes the behaviour of the pathway at a given experimental condition, and transforms them into pathway signatures. The metabolic pathways of Escherichia coli are used as a case study.
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Affiliation(s)
- Eleftherios Panteris
- School of Information Systems, Computing and Mathematics, Brunel University, Uxbridge, Middlesex UB8 3PH, UK.
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Panteris E, Apostolakos P, Galatis B. Sinuous ordinary epidermal cells: behind several patterns of waviness, a common morphogenetic mechanism. New Phytol 1994; 127:771-780. [PMID: 33874380 DOI: 10.1111/j.1469-8137.1994.tb02981.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Morphogenesis of sinuous epidermal cells in leaves of the fern Asplenium nidus and the monocotyledonous Cyperus papyrus, petals of the dicotyledonous Begonia lucerna. and in-vitro-grown leaves of the fern Adantum capillus-veneris is controlled by the local differentiation of their walls. In all these cases wall pads, including radial cellulose microfibrils, arc deposited at the junctions of the external periclinal wall with the anticlinal ones. Moreover, in Asplenium nidus, similar wall pads form at the junctions of the internal periclinal wall with the anticlinal ones. The wall pads are connected to anticlinal cellulose microfibril bundles running the whole depth of the anticlinal walls nr part of it. This wall differentiation imposes a highly controlled cell wall expansion, a consequence of which is the waviness of the epidermal cell anticlinal, walls. The pattern of wall reinforcement varies among different species, resulting in differences in the pattern of waviness. Cortical microtubule arrays mirror the orientated deposition of cellulose microfibrils in the epidermal Cells. These findings, derived from plants from different major groups, show a common epidermal cell morphogenetic mechanism depending on radial cellulose microfibrils and cellulose microfibril bundles. The facts that (a) epidermal cell morphogenesis in Adiantum copillus-veneris leaves grown in vitro differs considerably from that of typical leaves and (b) petal epidermal cells in Begonia lucerna are sinuous, while leaf epidermal cells are not, suggest that this mechanism may he affected by epigenetic factors.
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Affiliation(s)
- E Panteris
- Institute of General Botany, University of Athens, Athens, GR-157 84, Greece
| | - P Apostolakos
- Institute of General Botany, University of Athens, Athens, GR-157 84, Greece
| | - B Galatis
- Institute of General Botany, University of Athens, Athens, GR-157 84, Greece
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Panteris E, Apostolakos P, Galatis B. Microtubule organization and cell morphogenesis in two semi-lobed cell types of Adiantum capillus-veneris L. leaflets. New Phytol 1993; 125:509-520. [PMID: 33874586 DOI: 10.1111/j.1469-8137.1993.tb03899.x] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Protodermal cells of Adiantum capillus-veneris leaflets are polyhedral, displaying regularly arranged cortical microtubules transverse to the main cell axis. The nascent epidermal cells partly detach from the underlying mesophyll cells by formation of intercellular spaces, containing PAS-positive material. In early differentiating upper epidermal cells discrete U-like bundles of cortical microtubules form on the internal periclinal and the anticlinal walls. In contrast, microtubules are randomly scattered along the external periclinal wall. Microtubule bundles of neighbouring anticlinal walls of epidermal cells exhibit an alternating disposition but are directly opposite to those of underlying mesophyll cells. Epidermal cell wall is locally reinforced by thickenings arising under the microtubule bundles and including parallel cellulose microfibrils. The pattern of wall thickenings reflects that of the microtubule bundles. The internal periclinal epidermal cell region expands at the sectors free of wall thickenings, forming several lobes. Simultaneously, intercellular spaces open at the thickened regions of anticlinal walls, which finally become wavy. In contrast, the external periclinal wall does not form any lobes but remains smooth. As a result, epidermal cells become 'semi-lobed'. The lobes of lower epidermal cells are less prominent. Mesophyll cells surrounding the endodermis are also 'semi-lobed'. Their morphogenesis is achieved by the same mechanism. Colchicine treatment inhibits the 'semi-lobed' morphogenesis of epidermal cells and mesophyll cells surrounding the endodermis and the concomitant intercellular space opening. These observations reveal that the primary event of 'semi-lobed' cell morphogenesis is the organization of two different patterns of the cortical microtubule cytoskeleton in the same cell.
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Affiliation(s)
- E Panteris
- Institute of General Botany, University of Athens, Athens 157 84 Greece
| | - P Apostolakos
- Institute of General Botany, University of Athens, Athens 157 84 Greece
| | - B Galatis
- Institute of General Botany, University of Athens, Athens 157 84 Greece
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