Konstantinos Adamos

Mr. Konstantinos Adamos


Research Focus & Metrics

Academic Career Length

2Years (2025-Present)

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

Representative Publications

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Verified
Journal Article
Open access
PDF file
Aris KaltsasAris Kaltsas
Aris Kaltsas
AKAndreas Koumenis
Andreas Koumenis
MSMarios Stavropoulos
Marios Stavropoulos
ZKZisis Kratiras
Zisis Kratiras
DDDimitrios Deligiannis
Dimitrios Deligiannis
MCMichael Chrisofos
Michael Chrisofos
Male infertility is a prevalent condition affecting approximately 15% of couples worldwide. Recent evidence indicates that, beyond its immediate reproductive implications, male infertility may reflect broader health concerns. Large-scale cohort studies consistently show that men with poorer semen parameters have elevated all-cause mortality compared to fertile counterparts, with a dose-dependent pattern whereby more severe abnormalities correlate with a higher risk of early death. Proposed mechanisms linking infertility to reduced life expectancy encompass genetic, hormonal, and lifestyle factors. For instance, Klinefelter syndrome exemplifies a genetic cause of azoospermia that also predisposes to metabolic syndrome, diabetes, and certain malignancies. Low testosterone, a frequent finding in testicular dysfunction, is implicated in obesity, insulin resistance, and cardiovascular disease, all of which can shorten lifespan. Additionally, psychosocial stress and depression—commonly reported among infertile men—may contribute to health-compromising behaviors. Environmental exposures and socioeconomic factors further compound these risks. Collectively, these data underscore the importance of recognizing male infertility as an early indicator of potentially modifiable health vulnerabilities. A comprehensive evaluation of infertile men should therefore extend beyond fertility assessments to include screening for chronic diseases, hormonal imbalances, and mental health issues. Targeted surveillance for specific cancers (e.g., testicular and prostate) and early interventions—such as lifestyle modifications, appropriate hormonal therapies, and psychosocial support—can improve both reproductive outcomes and long-term well-being. Given these insights, male fertility assessment may serve as a valuable gateway to broader men’s healthcare, prompting proactive strategies that mitigate associated risks and potentially enhance longevity.

23 January 2025 in Microorganisms
Verified
Journal Article
Open access
PDF file
Aris KaltsasAris Kaltsas
Aris Kaltsas
IGIlias Giannakodimos
Ilias Giannakodimos
EMEleftheria Markou
Eleftheria Markou
KAKonstantinos Adamos
Konstantinos Adamos
MSMarios Stavropoulos
Marios Stavropoulos
MCMichael Chrisofos
Michael Chrisofos
Erectile dysfunction (ED) is a prevalent male sexual disorder characterized by the persistent inability to achieve or maintain an erection sufficient for satisfactory sexual performance. While its etiology is multifactorial, encompassing vascular, neurological, hormonal, and psychological components, emerging evidence suggests a significant role for gut microbiota dysbiosis in its development. The gut microbiota influences various metabolic, inflammatory, and neuropsychological processes critical to erectile function. Dysbiosis can lead to systemic inflammation, endothelial dysfunction, hormonal imbalances, and altered neurotransmitter production, all of which are key factors in ED pathogenesis. This narrative review synthesizes current research on the association between gut microbiota alterations and ED, highlighting specific bacterial taxa implicated in ED through mechanisms involving inflammation, metabolic disturbances, and hormonal regulation. This review explores potential mechanisms linking gut microbiota and ED, including pro-inflammatory cytokines, gut barrier integrity disruption, metabolic disorders, psychological factors via the gut–brain axis, and hormonal regulation. Furthermore, the gut microbiota offers promising avenues for developing non-invasive biomarkers and therapeutic interventions such as probiotics, prebiotics, dietary modifications, and fecal microbiota transplantation. Future research should focus on longitudinal studies, mechanistic explorations, and clinical trials to validate these findings and translate them into clinical practice. Understanding the interplay between the gut microbiota and erectile function could unveil novel diagnostic biomarkers and pave the way for innovative treatments targeting the microbiota, ultimately improving men’s sexual and overall health.

Verified
Journal Article
Open access
PDF file
Aris KaltsasAris Kaltsas
Aris Kaltsas
IGIlias Giannakodimos
Ilias Giannakodimos
Evangelos N. SymeonidisEvangelos N. Symeonidis
Evangelos N. Symeonidis
DDDimitrios Deligiannis
Dimitrios Deligiannis
MSMarios Stavropoulos
Marios Stavropoulos
MCMichael Chrisofos
Michael Chrisofos
Background/Objectives: Benign prostatic hyperplasia (BPH) is a common urological condition that can significantly impair quality of life in aging men by causing lower urinary tract symptoms (LUTS), including nocturia, weak stream, and incomplete emptying. While pharmacotherapy and surgical approaches such as transurethral resection of the prostate (TURP) remain cornerstone treatments, minimally invasive surgical therapies (MISTs) have emerged to bridge the gap between long-term medication use and invasive surgery. This narrative review assesses Rezūm therapy (water vapor thermal therapy, WVTT) by examining its mechanism of action, clinical efficacy, safety profile, and place in the BPH treatment algorithm. Methods: This narrative review synthesizes evidence from randomized controlled trials (RCTs), prospective studies, real-world cohorts, and published systematic reviews with meta-analyses to provide a comprehensive evaluation of Rezūm therapy for BPH. Key outcomes assessed include changes in International Prostate Symptom Score (IPSS), urinary flow rates, retreatment rates, adverse events, and sexual function preservation. Results: Across multiple studies, Rezūm significantly reduces IPSS (typically by ≥50%) and increases peak urinary flow by 4–5 mL/s. These improvements are durable, with five-year follow-up data showing low retreatment rates of approximately 4–5% and sustained symptom relief. The procedure, performed under local or minimal anesthesia, has a favorable safety profile: most adverse events are mild or transient, and notable complications, such as bleeding requiring transfusion or persistent sexual dysfunction, are rare. Importantly, Rezūm preserves both erectile and ejaculatory function in most patients, setting it apart from many traditional surgical interventions associated with higher sexual side effect rates. Conclusions: Rezūm is an effective and minimally invasive alternative for men with moderate prostatic enlargement who desire durable symptom improvement while avoiding the morbidity and sexual side effects associated with more invasive surgery. Future research should aim to further refine patient selection and assess long-term outcomes in broader populations.

Verified
Journal Article
Open access
PDF file
Aris KaltsasAris Kaltsas
Aris Kaltsas
NRNikolaos Razos
Nikolaos Razos
ZKZisis Kratiras
Zisis Kratiras
DDDimitrios Deligiannis
Dimitrios Deligiannis
MSMarios Stavropoulos
Marios Stavropoulos
MCMichael Chrisofos
Michael Chrisofos
Prostate cancer (PCa) is the second most frequently diagnosed malignancy in men worldwide. Although traditionally considered a disease of older men, the incidence of early-onset PCa (diagnosis < 55 years) is steadily rising. Advances in screening and therapy have significantly improved survival, creating a growing cohort of younger survivors for whom post-treatment quality of life—notably reproductive function—is paramount. Curative treatments such as radical prostatectomy, pelvic radiotherapy, androgen-deprivation therapy (ADT), and chemotherapy often cause irreversible infertility via multiple mechanisms, including surgical disruption of the ejaculatory tract, endocrine suppression of spermatogenesis, direct gonadotoxic injury to the testes, and oxidative sperm DNA damage. Despite these risks, fertility preservation is frequently overlooked in pre-treatment counseling, leaving many patients unaware of their options. This narrative review synthesizes current evidence on how PCa therapies impact male fertility, elucidates the molecular and physiological mechanisms of iatrogenic infertility, and evaluates both established and emerging strategies for fertility preservation and restoration. Key interventions covered include sperm cryopreservation, microsurgical testicular sperm extraction (TESE), and assisted reproductive technologies (ART). Psychosocial factors influencing decision-making, novel biomarkers predictive of post-treatment spermatogenic recovery, and long-term offspring outcomes are also examined. The review underscores the urgent need for timely, multidisciplinary fertility consultation as a routine component of PCa care. As PCa increasingly affects men in their reproductive years, proactively integrating preservation into standard oncologic practice should become a standard survivorship priority.

28 October 2025 in Biomedicines
Verified
Journal Article
Open access
PDF file
IGIlias Giannakodimos
Ilias Giannakodimos
Aris KaltsasAris Kaltsas
Aris Kaltsas
AKAndreas Koumenis
Andreas Koumenis
EMEvangelia Mitakidi
Evangelia Mitakidi
KAKonstantinos Adamos
Konstantinos Adamos
MCMichael Chrisofos
Michael Chrisofos
The relationship between chronic kidney disease (CKD) and renal cell carcinoma (RCC) is both bidirectional and multifactorial. Several risk factors, including hypertension, diabetes mellitus, obesity, and smoking, have been associated with an increased risk for the development of CKD and RCC. CKD may predispose individuals to RCC through various mechanisms, including renal cystic diseases or induced oxidative stress effects. Conversely, RCC can induce CKD through the direct effects of the tumor, after surgeries for the management of the tumor (either partial or radical nephrectomy), and through perioperative acute kidney injury. Furthermore, medical interventions, including immunotherapy or targeted therapies, may precipitate acute kidney injury, potentially leading to the development of CKD. The expression of several genes in renal tissues has been related to the remodeling of kidneys during end-stage kidney disease and with an increased risk of the development of preneoplastic lesions and tumors. The aim of this review is to update the knowledge of these relationships, highlight the pathophysiologic mechanisms, and identify the genes and molecular expressions involved in this pathway.

Verified
Journal Article
Open access
PDF file
IGIlias Giannakodimos
Ilias Giannakodimos
IGIlias Giannakodimos
Ilias Giannakodimos
KAKonstantinos Adamos
Konstantinos Adamos
Aris KaltsasAris Kaltsas
Aris Kaltsas
EMEvangelia Mitakidi
Evangelia Mitakidi
ZKZisis Kratiras
Zisis Kratiras
Background: Urinary tract obstruction can lead to severe renal impairment if not managed effectively. Nephrostomy placement is a critical intervention to relieve such obstructions. The aim of this study was to compare the mono J single-step nephrostomy and the two-step balloon nephrostomy techniques in terms of procedural efficiency, patient tolerability, and complication rates. Methods: A prospective randomized observational design was employed, including patients requiring nephrostomy placement due to oncological conditions, urinary tract lithiasis, or functional disorders. Patients were randomized into two groups based on the different method of nephrostomy tube placement: one with the mono J single-step method and the other with the two-step balloon method. The primary outcomes were to compare the average placement time, the accuracy of the tube placement between methods, and reported complications at 3, 6, 9, and 12 months, verified through immediate post-procedural imaging. Secondary outcomes evaluated post-procedure pain levels were using the visual analogue scale (VAS) between the two methods. Results: The mono J single-step method had a significantly shorter average placement time (Mann–Whitney, W = 367.5, p = 0.006), while the two-step method demonstrated better early tube stability, as evidenced by fewer dislocations at 3 months (Chi-square, χ2(1) = 4.828, p = 0.028, Cramer’s V = 0.28) and 6 months (Chi-square, χ2(1) = 5.198, p = 0.023, Cramer’s V = 0.29). No significant differences between methods were recorded at 6 and 12 months. Patient tolerability was comparable between the two methods, and no significant difference was reported. Conclusions: Although the mono J single-step technique is more time-efficient, the two-step balloon method offers advantages in early tube stability, providing valuable insights for optimizing clinical decision-making in nephrostomy placement.