Vassilios Tzortzis

Prof. Dr. Vassilios Tzortzis

orcid

Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

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

Representative Publications

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21 January 2008 in Multiple Sclerosis Journal
Verified
Journal Article
Closed access
VTVassilios Tzortzis
Vassilios Tzortzis
KSKonstantinos Skriapas
Konstantinos Skriapas
GHGeorge Hadjigeorgiou
George Hadjigeorgiou
IMIraklis Mitsogiannis
Iraklis Mitsogiannis
KAKonstantinos Aggelakis
Konstantinos Aggelakis
MMMichael D Melekos
Michael D Melekos
Objectives The aim of the study was to evaluate female sexuality in a selective population of newly diagnosed multiple sclerosis (MS) women. Materials and methods In this clinic-based study, 63 newly diagnosed consecutive women affected by definite MS were admitted. Disability and depression were evaluated with the expanded disability status scale (EDSS) and Beck depression inventory, respectively. Sexual function was evaluated with the female sexual function index (FSFI). A group of 61 healthy female volunteers with the same baseline characteristics were used as controls. Postmenopausal women and patients with other major concomitant neurological, endocrinological, vascular, gynecological, psychiatric disorders, use of medicines that can cause female sexual dysfunction (FSD) and disease-modifying drugs were excluded from the study. Results All the evaluated patients were ambulant with no major neurological impairment (mean EDSS score 2.5, range 0—3.5). None of the patients were considered clinically depressed, but some of them were sad or worried. According to the sexual history and FSFI scores, sexual dysfunction was diagnosed in 22 (34.9%) out of the 63 patients and in 13 (21.31%) out of the 61 healthy females (P > 0.05). Conclusions In the newly diagnosed MS patients, FSD represent an important issue even though disability and other concomitant disorders affecting sexual function were excluded. Multiple Sclerosis 2008; 14: 561—563. http://msj.sagepub.com

1 July 2006 in Urology
Verified
Journal Article
Closed access
VTVassilios Tzortzis
Vassilios Tzortzis
EAEvangelos Aravantinos
Evangelos Aravantinos
AKAnastasios Karatzas
Anastasios Karatzas
IMIraklis C. Mitsogiannis
Iraklis C. Mitsogiannis
GMGeorgios Moutzouris
Georgios Moutzouris
MMMichael D. Melekos
Michael D. Melekos

1 July 2009 in The Journal of Sexual Medicine
Verified
Journal Article
Closed access
PDF file
VTVassilios Tzortzis
Vassilios Tzortzis
LMLampros Mitrakas
Lampros Mitrakas
SGStavros Gravas
Stavros Gravas
CMCharalampos Mamoulakis
Charalampos Mamoulakis
AMAndreas Meissner
Andreas Meissner
MMMichael D. Melekos
Michael D. Melekos

30 April 2017 in Hormones
Verified
Journal Article
Closed access
VTVassilios Tzortzis
Vassilios Tzortzis
MSMichael Samarinas
Michael Samarinas
IZIoannis Zachos
Ioannis Zachos
AOAthanasios Oeconomou
Athanasios Oeconomou
LPLouis L. Pisters
Louis L. Pisters
ABAlexandra Bargiota
Alexandra Bargiota
Prostate cancer is the most common cancer among men and androgen deprivation therapy (ADT) is the most effective treatment for this disease. The cornerstone of the treatment of prostate cancer is inhibition of testosterone production which interrupts testosterone-induced growth of the prostate tumor. The dramatic decrease in testosterone levels, however, has several undesirable effects on the metabolic profile and bone metabolism and can also lead to fatigue, loss of libido, gynecomastia, and anemia, provoke vasomotor flushing, and generally affect the quality of life. Due to the long-term survival rates of patients with prostate cancer, treatment-related adverse effects are highly relevant and thus, in each clinical setting, the benefits of ADT must be weighed against treatment-related adverse effects. The current review focuses on the more recently described metabolic complications of androgen deprivation therapy, including obesity, diabetes, lipid alterations, metabolic syndrome, and cardiovascular disease. In addition, it provides practical management recommendations drawn from the available guidelines issued by the American Diabetes Association and American Heart Association.

13 January 2022 in Genes
Verified
Journal Article
Open access
PDF file
PVPanagiotis Vlachostergios
Panagiotis Vlachostergios
AKAthanasios Karathanasis
Athanasios Karathanasis
VTVassilios Tzortzis
Vassilios Tzortzis
Background: Advanced prostate cancer (PC) may accumulate genomic alterations that hallmark lineage plasticity and transdifferentiation to a neuroendocrine (NE) phenotype. Fibroblast activation protein (FAP) is a key player in epithelial-to-mesenchymal transition (EMT). However, its clinical value and role in NE differentiation in advanced PC has not been fully investigated. Methods: Two hundred and eight patients from a multicenter, prospective cohort of patients with metastatic castration-resistant prostate cancer (CRPC) with available RNA sequencing data were analyzed for tumor FAP mRNA expression, and its association with overall survival (OS) and NE tumor features was investigated. Results: Twenty-one patients (10%) were found to have high FAP mRNA expression. Compared to the rest, this subset had a proportionally higher exposure to taxanes and AR signaling inhibitors (abiraterone or enzalutamide) and was characterized by active NE signaling, evidenced by high NEPC- and low AR-gene expression scores. These patients with high tumor mRNA FAP expression had a more aggressive clinical course and significantly shorter survival (12 months) compared to those without altered FAP expression (28 months, log-rank p = 0.016). Conclusions: FAP expression may serve as a valuable NE marker indicating a worse prognosis in patients with metastatic CRPC.

1 May 2009 in Journal of Endourology
Verified
Journal Article
Closed access
VTVassilios Tzortzis
Vassilios Tzortzis
SGStavros Gravas
Stavros Gravas
MMMichel M. Melekos
Michel M. Melekos
JRJean J. de la Rosette
Jean J. de la Rosette
In current clinical practice, lidocaine gel is widely used as a local anesthetic lubricant before various forms of transurethral instrumentation. Over the past few years, the value of local anesthesia during urethral catheterization and flexible or rigid cystoscopy has been questioned. Strong data are lacking, and the results from the different studies are contradictory. As a result, the correct use of the intraurethral gels is, for the most part, left to individual preference. The purpose of this review is to provide an overview of the characteristics of the intraurethral gels, to assess the effectiveness, and to define evidence-based indications for their use.