Panagiotis Vlamos

Prof. Panagiotis Vlamos

Department of Informatics, Ionian University, 7 Tsirigoti Square, 49132 Corfu, Greece
orcid

Research Focus & Metrics

Academic Career Length

29Years (1998-Present)

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

Representative Publications

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22 April 2023 in Sensors
Verified
Journal Article
Open access
PDF file
Aristidis VrahatisAristidis Vrahatis
Aristidis Vrahatis
KSKonstantina Skolariki
Konstantina Skolariki
Marios KrokidisMarios Krokidis
Marios Krokidis
KLKonstantinos Panagiotis Lazaros
Konstantinos Panagiotis Lazaros
Themis ExarchosThemis Exarchos
Themis Exarchos
Panagiotis VlamosPanagiotis Vlamos
Panagiotis Vlamos
Alzheimer’s disease (AD) is now classified as a silent pandemic due to concerning current statistics and future predictions. Despite this, no effective treatment or accurate diagnosis currently exists. The negative impacts of invasive techniques and the failure of clinical trials have prompted a shift in research towards non-invasive treatments. In light of this, there is a growing need for early detection of AD through non-invasive approaches. The abundance of data generated by non-invasive techniques such as blood component monitoring, imaging, wearable sensors, and bio-sensors not only offers a platform for more accurate and reliable bio-marker developments but also significantly reduces patient pain, psychological impact, risk of complications, and cost. Nevertheless, there are challenges concerning the computational analysis of the large quantities of data generated, which can provide crucial information for the early diagnosis of AD. Hence, the integration of artificial intelligence and deep learning is critical to addressing these challenges. This work attempts to examine some of the facts and the current situation of these approaches to AD diagnosis by leveraging the potential of these tools and utilizing the vast amount of non-invasive data in order to revolutionize the early detection of AD according to the principles of a new non-invasive medicine era.

Verified
Journal Article
Open access
PDF file
Marios KrokidisMarios Krokidis
Marios Krokidis
DKDimitrios E. Koumadorakis
Dimitrios E. Koumadorakis
KLKonstantinos Panagiotis Lazaros
Konstantinos Panagiotis Lazaros
OIOuliana Ivantsik
Ouliana Ivantsik
Themis ExarchosThemis Exarchos
Themis Exarchos
Panagiotis VlamosPanagiotis Vlamos
Panagiotis Vlamos
AlphaFold3, the latest release of AlphaFold developed by Google DeepMind and Isomorphic Labs, was designed to predict protein structures with remarkable accuracy. AlphaFold3 enhances our ability to model not only single protein structures but also complex biomolecular interactions, including protein–protein interactions, protein–ligand docking, and protein-nucleic acid complexes. Herein, we provide a detailed examination of AlphaFold3’s capabilities, emphasizing its applications across diverse biological fields and its effectiveness in complex biological systems. The strengths of the new AI model are also highlighted, including its ability to predict protein structures in dynamic systems, multi-chain assemblies, and complicated biomolecular complexes that were previously challenging to depict. We explore its role in advancing drug discovery, epitope prediction, and the study of disease-related mutations. Despite its significant improvements, the present review also addresses ongoing obstacles, particularly in modeling disordered regions, alternative protein folds, and multi-state conformations. The limitations and future directions of AlphaFold3 are discussed as well, with an emphasis on its potential integration with experimental techniques to further refine predictions. Lastly, the work underscores the transformative contribution of the new model to computational biology, providing new insights into molecular interactions and revolutionizing the fields of accelerated drug design and genomic research.

1 June 2013 in Behaviour & Information Technology
Verified
Journal Article
Closed access
Michail GiannakosMichail Giannakos
Michail Giannakos
KCKonstantinos Chorianopoulos
Konstantinos Chorianopoulos
KGKonstantinos Giotopoulos
Konstantinos Giotopoulos
Panagiotis VlamosPanagiotis Vlamos
Panagiotis Vlamos
This article investigates the uses and gratifications of the popular social networking site Facebook. In the exploratory stage, 70 users generated phrases to describe the manner they used Facebook. Interestingly, some users not only described the uses, but also mentioned how they perceive these uses. These phrases were coded into 14 items and clustered into four factors. The principal component analysis that was conducted in the third stage of the study, which was addressed to 222 Facebook users, verified the validity of the four factors: Social Connection, Social Network Surfing, Wasting Time and Using Applications. Previous user studies on Facebook have examined the immediate social effects of this popular social networking site, but they have not regarded emerging uses of the platform, such as gaming and applications, which do have a social component as a feature and not as a core principle. The ‘Wasting Time’ factor and the growth of ‘Using Applications’ factor indicate that Facebook has already become an integral part of daily computing routine, alongside with the rest of the entertainment desktop and web applications.

MCMarios Constantinou
Marios Constantinou
Themis ExarchosThemis Exarchos
Themis Exarchos
Aristidis VrahatisAristidis Vrahatis
Aristidis Vrahatis
Panagiotis VlamosPanagiotis Vlamos
Panagiotis Vlamos
Since December 2019, the coronavirus disease has significantly affected millions of people. Given the effect this disease has on the pulmonary systems of humans, there is a need for chest radiographic imaging (CXR) for monitoring the disease and preventing further deaths. Several studies have been shown that Deep Learning models can achieve promising results for COVID-19 diagnosis towards the CXR perspective. In this study, five deep learning models were analyzed and evaluated with the aim of identifying COVID-19 from chest X-ray images. The scope of this study is to highlight the significance and potential of individual deep learning models in COVID-19 CXR images. More specifically, we utilized the ResNet50, ResNet101, DenseNet121, DenseNet169 and InceptionV3 using Transfer Learning. All models were trained and validated on the largest publicly available repository for COVID-19 CXR images. Furthermore, they were evaluated on unknown data that was not used for training or validation, authenticating their performance and clarifying their usage in a medical scenario. All models achieved satisfactory performance where ResNet101 was the superior model achieving 96% in Precision, Recall and Accuracy, respectively. Our outcomes show the potential of deep learning models on COVID-19 medical offering a promising way for the deeper understanding of COVID-19.

1 January 2020 in Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
Verified
Journal Article
Open access
PDF file
MBMaximilian Buegler
Maximilian Buegler
RHRobbert L. Harms
Robbert L. Harms
MBMircea Balasa
Mircea Balasa
IMIrene B. Meier
Irene B. Meier
TEThemis Exarchos
Themis Exarchos
ITIoannis Tarnanas
Ioannis Tarnanas
Background Research investigating treatments and interventions for cognitive decline fail due to difficulties in accurately recognizing behavioral signatures in the presymptomatic stages of the disease. For this validation study, we took our previously constructed digital biomarker‐based prognostic models and focused on generalizability and robustness of the models. Method We validated prognostic models characterizing subjects using digital biomarkers in a longitudinal, multi‐site, 40‐month prospective study collecting data in memory clinics, general practitioner offices, and home environments. Results Our models were able to accurately discriminate between healthy subjects and individuals at risk to progress to dementia within 3 years. The model was also able to differentiate between people with or without amyloid neuropathology and classify fast and slow cognitive decliners with a very good diagnostic performance. Conclusion Digital biomarker prognostic models can be a useful tool to assist large‐scale population screening for the early detection of cognitive impairment and patient monitoring over time.

1 March 2012 in British Journal of Educational Technology
Verified
Journal Article
Closed access
PDF file
Michail GiannakosMichail Giannakos
Michail Giannakos
Panagiotis VlamosPanagiotis Vlamos
Panagiotis Vlamos