Georgios Vasilios Tsamos

Dr. Georgios Vasilios Tsamos

Aristotle University of Thessaloniki, Thessaloníki, Kentrikí Makedonía, Greece

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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23 January 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
Vasileios G. PatriarcheasVasileios G. Patriarcheas
Vasileios G. Patriarcheas
GTGeorgios Vasilios Tsamos
Georgios Vasilios Tsamos
DVDimitra Vasdeki
Dimitra Vasdeki
ELIAS KOTTEASELIAS KOTTEAS
ELIAS KOTTEAS
Anastasios KolliasAnastasios Kollias
Anastasios Kollias
EDEvangelos Dimakakos
Evangelos Dimakakos
Background: Antiphospholipid syndrome (APS) is a rare systemic autoimmune disease characterized by persistent antiphospholipid antibodies (aPL) in combination with recurrent thrombosis in the veins and/or arteries, obstetric morbidity, and various non-thrombotic associated complications. APS can be primary, as an isolated condition, or secondary in the context of another autoimmune disease, especially systemic lupus erythematosus. This comprehensive clinical review aims to summarize the current understanding of APS pathogenesis, diagnostic approaches, and treatment strategies for this unique clinical entity. Methods: A comprehensive review of the existing literature on APS was conducted, focusing on pathophysiological mechanisms, current diagnostic criteria, and therapeutic approaches. Results: APS pathogenesis involves complex interactions between aPL, phospholipid-binding proteins, and the coagulation cascade. Apart from the cardinal features of thrombosis and APS-related obstetric morbidity, APS is associated with a wide spectrum of clinical manifestations. Diagnosis remains challenging due to overlapping symptoms with other conditions, and clinicians should maintain a high index of suspicion in order to set the diagnosis. The recently published 2023 ACR/EULAR criteria although not definitive for clinical decision-making, these criteria offer clinicians a valuable tool to aid in determining whether further investigation for APS is warranted. Continued refinement of these criteria through ongoing feedback and updates is anticipated. Treatment strategies center on anticoagulation, but individualized approaches are necessary. Conclusions: Early diagnosis and multidisciplinary management of APS are critical to reducing morbidity and improving outcomes. Moreover, familiarization with the 2023 ACR/EULAR criteria is encouraged, recognizing that ongoing feedback and updates will contribute to their ongoing refinement and improvement. While VKAs remain the mainstay of treatment for most APS patients further research is needed to optimize treatment strategies and deepen our understanding of APS’s underlying disease mechanisms.

26 October 2024 in Nutrients
Verified
Journal Article
Open access
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DVDimitra Vasdeki
Dimitra Vasdeki
GTGeorgios Vasilios Tsamos
Georgios Vasilios Tsamos
EDEvangelos Dimakakos
Evangelos Dimakakos
Vasileios G. PatriarcheasVasileios G. Patriarcheas
Vasileios G. Patriarcheas
TKTheocharis Koufakis
Theocharis Koufakis
Agata StanekAgata Stanek
Agata Stanek
As the incidence of type 2 diabetes mellitus (T2DM) continues to increase globally, researchers are keen to investigate various interventions to mitigate its impact. Among these, vitamin D supplementation has attracted significant attention due to its influence on insulin secretion from the pancreas and insulin receptors in body cells. A substantial body of evidence indicates that vitamin D supplementation can reduce low-grade inflammation, a critical factor in developing insulin resistance. In addition, vitamin D aids in sustaining low resting concentrations of reactive oxygen species and free radicals, normalizes Ca2+ signaling, diminishes the expression of cytokines that are pro-inflammatory, and enhances the production of cytokines that are anti-inflammatory. This review discusses the effects of vitamin D on the glycemic control of individuals with T2DM and evaluates the impact of vitamin D supplementation on glycemic markers in this population. The investigation employs a comprehensive analysis of the existing literature with a special focus on recent studies published in the past decade. Based on the findings in the literature, it can be concluded that vitamin D supplementation alongside anti-diabetic medications may enhance glycemic control and potentially reduce the risk of diabetic complications. The evidence supports the notion that vitamin D supplementation can be a valuable addition to pharmacological agents for the management of T2DM, potentially enhancing glycemic control and overall health outcomes in affected individuals.

13 November 2022 in Nutrients
Verified
Journal Article
Open access
PDF file
DVDimitra Vasdeki
Dimitra Vasdeki
TKTheocharis Koufakis
Theocharis Koufakis
GTGeorgios Vasilios Tsamos
Georgios Vasilios Tsamos
Luca BusettoLuca Busetto
Luca Busetto
PZPantelis Zebekakis
Pantelis Zebekakis
KKKalliopi Kotsa
Kalliopi Kotsa
Type 2 diabetes mellitus (T2DM) is a progressive disease with a growing prevalence, associated with an increased risk of complications. The introduction of new classes of antidiabetic drugs into clinical practice has dramatically changed the landscape of diabetes therapy. However, despite the progress made in the pharmacotherapy of T2DM, mitigating the burden of the disease on individuals, societies and health care systems remains a challenge. Remission has recently emerged as a therapeutic target in T2DM, achievable through a wide range of interventions. Recent studies have shown that extensive lifestyle changes, such as weight reduction, bariatric surgery, and intensive glucose lowering therapy, can prompt the remission of diabetes, but some unanswered questions remain regarding its long-term effects on diabetic complications. Metabolic surgery and novel classes of glucose-lowering medications are currently the most effective interventions to induce weight loss and by extension remission in patients with diabetes; however, the ideal strategy to achieve the long-term maintenance of remission remains doubtful. In this narrative review, we discuss the available therapeutic approaches to target the remission of diabetes through personalized multimodal care, based on the latest evidence.

4 April 2023 in Metabolites
Verified
Journal Article
Open access
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GTGeorgios Vasilios Tsamos
Georgios Vasilios Tsamos
DVDimitra Vasdeki
Dimitra Vasdeki
TKTheocharis Koufakis
Theocharis Koufakis
VASILIKI MICHOUVASILIKI MICHOU
VASILIKI MICHOU
Kali MakedouKali Makedou
Kali Makedou
GTGEORGIOS TZIMAGIORGIS
GEORGIOS TZIMAGIORGIS
Nonalcoholic fatty liver disease (NAFLD), the most widespread chronic liver disease worldwide, confers a significant burden on health systems and leads to increased mortality and morbidity through several extrahepatic complications. NAFLD comprises a broad spectrum of liver-related disorders, including steatosis, cirrhosis, and hepatocellular carcinoma. It affects almost 30% of adults in the general population and up to 70% of people with type 2 diabetes (T2DM), sharing common pathogenetic pathways with the latter. In addition, NAFLD is closely related to obesity, which acts in synergy with other predisposing conditions, including alcohol consumption, provoking progressive and insidious liver damage. Among the most potent risk factors for accelerating the progression of NAFLD to fibrosis or cirrhosis, diabetes stands out. Despite the rapid rise in NAFLD rates, identifying the optimal treatment remains a challenge. Interestingly, NAFLD amelioration or remission appears to be associated with a lower risk of T2DM, indicating that liver-centric therapies could reduce the risk of developing T2DM and vice versa. Consequently, assessing NAFLD requires a multidisciplinary approach to identify and manage this multisystemic clinical entity early. With the continuously emerging new evidence, innovative therapeutic strategies are being developed for the treatment of NAFLD, prioritizing a combination of lifestyle changes and glucose-lowering medications. Based on recent evidence, this review scrutinizes all practical and sustainable interventions to achieve a resolution of NAFLD through a multimodal approach.

13 January 2023 in Life
Verified
Journal Article
Open access
PDF file
VASILIKI MICHOUVASILIKI MICHOU
VASILIKI MICHOU
Vassilios LiakopoulosVassilios Liakopoulos
Vassilios Liakopoulos
Stefanos RoumeliotisStefanos Roumeliotis
Stefanos Roumeliotis
ARAthanasios Roumeliotis
Athanasios Roumeliotis
MAMaria Anifanti
Maria Anifanti
EKEvangelia Kouidi
Evangelia Kouidi
Background: This study aimed to investigate the effects of a home-based exercise training program on Cardiac Autonomic Neuropathy (CAN) and metabolic profile in Diabetic Kidney Disease (DKD) patients undergoing maintenance hemodialysis (HD). Method: Twenty-eight DKD patients undergoing hemodialysis were randomly assigned into two groups. The exercise (EX) group followed a 6-month combined exercise training program at home, while the control (CO) group remained untrained. All participants at baseline and the end of the study underwent cardiopulmonary exercise testing (CPET), biochemical tests for glucose and lipid profile, and 24-h electrocardiographic monitoring for heart rate variability (HRV) analysis and heart rate turbulence (HRT). Results: At the end of the study, compared to the CO, the EX group showed a significant increase in serum high-density lipoprotein (HDL) by 27.7% (p = 0.01), peak oxygen uptake (VO2peak) by 9.3% (p < 0.05), the standard deviation of R-R intervals (SDNN) by 34.3% (p = 0.03), percentage of successive RR intervals higher than 50ms (pNN50) by 51.1% (p = 0.02), turbulence slope (TS) index by 18.4% (p = 0.01), and decrease in (glycated hemoglobin) HbA1c by 12.5% (p = 0.04) and low-frequency power LF (ms2) by 29.7% (p = 0.01). Linear regression analysis after training showed that VO2peak was correlated with SDNN (r = 0.55, p = 0.03) and HF (r = 0.72, p = 0.02). Multiple regression analysis indicated that the improvement of sympathovagal balance and aerobic capacity depended on patients’ participation in exercise training. Conclusion: In conclusion, a 6-month home-based mixed-type exercise program can improve cardiac autonomic function and metabolic profile in DKD patients on HD.

15 March 2024 in Nutrients
Verified
Journal Article
Open access
PDF file
GTGeorgios Vasilios Tsamos
Georgios Vasilios Tsamos
GKGeorgios Kalopitas
Georgios Kalopitas
KEKleo Evripidou
Kleo Evripidou
DVDimitra Vasdeki
Dimitra Vasdeki
TKTheocharis Koufakis
Theocharis Koufakis
MCMichael Chourdakis
Michael Chourdakis
Nonalcoholic fatty liver disease (NAFLD), the most common chronic liver disorder, is closely associated with insulin resistance, obesity, and metabolic syndromes. A body of research has proposed that olive oil, a basic component of the Mediterranean diet with antioxidant and anti-inflammatory properties, may alleviate metabolic disturbances and retard the progression of NAFLD. We conducted a systematic review and meta-analysis to assess the effectiveness of olive oil intake in people with NAFLD. We systematically searched the major electronic databases (PubMed/MEDLINE, Scopus, Cochrane Central Register of Controlled Trials), as well as grey literature sources, to identify randomized controlled trials (RCTs) investigating the effects of olive oil consumption on biochemical and anthropometric parameters of individuals with NAFLD. The quality of the studies was evaluated using the risk-of-bias tool 2.0 (RoB 2). The mean difference (MD) and the 95% confidence interval (CI) were calculated using fixed-effects and random-effects models. Seven RCTs involving 515 subjects were included in the analysis. In the random-effects model, no statistically significant differences were identified with respect to alanine transaminase (MD = −1.83 IU/L, 95% CI: −5.85, 2.19 IU/L, p = 0.37, I2 = 69%) and aspartate transaminase (MD = −1.65 IU/L, 95% CI: −4.48, 1.17 IU/L, p = 0.25, I2 = 72%) levels or waist circumference values (MD = −0.23 cm, 95% CI: −1.23, 0.76 cm, p = 0.65, I2 = 0%). However, a significant effect on body mass index was observed (MD = −0.57 kg/m2, 95% CI: −1.08, −0.06 kg/m2, p = 0.03, I2 = 51%) for subjects who received olive oil compared to those who received an alternative diet or placebo. The findings of the present meta-analysis suggest a modestly positive impact of olive oil intake on body weight in people with NAFLD.