Konstantinos Dimitropoulos
University of Thessaly
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Featured researches published by Konstantinos Dimitropoulos.
The Journal of Sexual Medicine | 2012
Konstantinos Dimitropoulos; Alexandra Bargiota; Odysseas Mouzas; Michael D. Melekos; Vassilios Tzortzis; Georgios Koukoulis
INTRODUCTION Current studies indicate that women with type 1 diabetes (T1DM) have a high prevalence of sexual disorders although data on the prevalence of sexual dysfunction are limited when sexual distress is included. AIM The frequency and the possible correlates of distressful sexual disorders in a highly selected group of type 1 diabetic women. METHODS The sexual function, sexual distress, and general health status were assessed in 44 premenopausal women with uncomplicated T1DM and 47 healthy controls, using the Female Sexual Function Index (FSFI), the Female Sexual Distress Scale (FSDS), and the General Health Questionnaire-28 (GHQ-28). MAIN OUTCOME MEASURES The impact of sexual distress on the frequency of female sexual dysfunction (FSD). RESULTS The frequency of sexual disorders according to the FSFI was significantly higher in diabetic compared to control women (25% vs. 8.5%, respectively, P < 0.05). Diabetic women had significantly lower median (first to third quartile) total FSFI score compared to control group (30.55 [26.08-33.08] vs. 33.50 [30.70-34.30], P = 0.001). Desire, arousal, and satisfaction were the sexual domains significantly affected in the diabetic group. Diabetic women had significantly higher median (first to third quartile) FSDS score compared to control group (6.5 [2.3-15.8] vs. 4.0 [1.0-10.5] P = 0.043). FSD (combined pathological FSFI and FSDS scores) was present in higher proportion of diabetic women (15.9%) compared to controls (2.1%) (P = 0.020). GHQ-28 score was comparable between the groups. However, in the diabetic group, FSD was related with anxiety, depression, and low educational level. Diabetes-related factors were not associated with FSD. CONCLUSIONS Pre-menopausal women with uncomplicated T1DM have significantly higher frequency of FSD compared to healthy controls, when the criterion of sexual distress is included. Psychosomatic and contextual factors implicated in sexual distress are correlates of FSD.
Drug Design Development and Therapy | 2015
Konstantinos Dimitropoulos; Stavros Gravas
Treatment of male lower urinary tract symptoms (LUTS) has traditionally focused on the management of benign prostatic obstruction, but the contribution of bladder dysfunction has been recently recognized. Therefore, it is well understood that LUTS have multifactorial etiology and often occur in clusters and not in isolation. Voiding LUTS are highly prevalent in men, but storage LUTS have been proved to be more bothersome. α1-Blockers are the most widely used pharmacologic agents for the treatment of symptoms relating to benign prostatic enlargement due to benign prostatic hyperplasia (BPH), while antimuscarinics are the drug class of choice for overactive bladder symptoms. A combination of the two drug classes would be a reasonable approach to treat men with both storage and voiding symptoms, and several short-term studies have proved the efficacy and safety of different combinations with an α1-blocker and an antimuscarinic. Following previous studies on the separate administration of solifenacin and tamsulosin, a fixed-dose combination tablet of tamsulosin oral controlled absorption system (OCAS) 0.4 mg and solifenacin succinate 6 mg has been recently introduced, and the current review evaluates the available data on the use of this fixed-dose combination in the treatment of LUTS in men with BPH.
Research and Reports in Urology | 2016
Konstantinos Dimitropoulos; Stavros Gravas
Male lower urinary tract symptoms (LUTS) are prevalent in the general population, especially in those of advanced age, and are characterized by notable diversity in etiology and presentation, and have been proven to cause various degrees of impairment on quality of life. The prostate has traditionally been regarded as the core cause of male LUTS. As a result, medical treatment aims to provide symptomatic relief and effective management of progression of male LUTS due to benign prostatic enlargement. In this context, α1-blockers, phosphodiesterase-5 inhibitors, and 5α-reductase inhibitors have long been used as monotherapies or in combination treatment to control voiding LUTS. There is accumulating evidence, however, that highlights the role of the bladder in the pathogenesis of male LUTS. Current research interests have shifted to bladder disorders, and medical management is aimed at the bladder. Muscarinic receptor antagonists and the newly approved β3-adrenergic agonist mirabegron aim to alleviate the most bothersome storage LUTS and thus improve quality of life. As voiding and storage LUTS frequently coexist, combination therapeutic strategies with α1-blockers and antimuscarinics or β3-agonists have been introduced to manage symptoms effectively. Anti-inflammatory agents, vitamin D3-receptor analogs, and cannabinoids represent treatment modalities currently under investigation for use in LUTS patients. Furthermore, luteinizing hormone-releasing hormone antagonists, transient receptor-potential channel blockers, purinergic neurotransmission antagonists, Rho-kinase inhibitors, and inhibitors of endothelin-converting enzymes could have therapeutic potential in LUTS management, but still remain in the experimental setting. This article reviews new strategies for the medical treatment of male LUTS, which are dictated by the potential role of the bladder and the risk of benign prostatic hyperplasia progression. Moreover, combination treatments and therapies currently under investigation are also presented.
Cancer Research and Treatment | 2014
Lampros Mitrakas; Ioannis Zachos; Vassileios P. Tzortzis; Stavros Gravas; Erasmia C. Rouka; Konstantinos Dimitropoulos; Gerasimos Vandoros; Anastasios Karatzas; Michael D. Melekos; Athanasios G. Papavassiliou
Purpose The purpose of this study was to assess the correlation of previous bladder cancer history with the recurrence and progression of patients with high-risk non–muscle-invasive bladder cancer treated with adjuvant Bacillus Calmette–Guérin (BCG) and to evaluate their natural history. Materials and Methods Patients were divided into two groups based on the existence of previous bladder cancer (primary, non-primary). A logistic regression analysis was used to identify the possible differences in the probabilities of recurrence and progression with respect to tumor history, while potential differences due to gender, tumor size (> 3 cm, < 3 cm), stage (pTa, T1), concomitant carcinoma in situ (pTis) and number of tumors (single, multiple) were also assessed. Univariate and multivariate models were employed. In addition, Kaplan-Meier survival analysis was used to compare recurrence- and progression-free survival between the groups. Results A total of 192 patients were included (144 with primary and 48 with non-primary tumors). The rates of recurrence and progression for patients with primary tumors were 27.8% and 12.5%, respectively. The corresponding percentages for patients with non-primary tumors were 77.1% and 33.3%, respectively. The latter group of patients displayed significantly higher probabilities of recurrence (p=0.000; 95% confidence interval [CI], 4.067 to 18.804) and progression (p=0.002; 95% CI, 1.609 to 7.614) in a univariate logistic regression analysis. Previous bladder cancer history remained significant in the multivariate model accounting for history, age, gender, tumor size , number of tumors, stage and concomitant pTis (p=0.000; 95% CI, 4.367 to 21.924 and p=0.002; 95% CI, 1.611 to 8.182 for recurrence and progression respectively). Kaplan-Meier curves revealed that the non-primary group hadreduced progression- and recurrence-free survival. Conclusion Previous non–muscle-invasive bladder cancer history correlates significantly with recurrence and progression in patients with high-risk non-muscle-invasive disease treated with adjuvant BCG.
The Journal of Sexual Medicine | 2013
Alexandra Bargiota; Konstantinos Dimitropoulos; Odysseas Mouzas; Michael D. Melekos; Vassilios Tzortzis; Georgios Koukoulis
INTRODUCTION Psychosomatic and social issues have been found to be determinants of sexual distress in diabetic and non-diabetic populations. However, the role of parental bonding as a determinant for sexual distress has not been studied in women with type 1 diabetes mellitus (DM-1). AIM To study the role of parental care and overprotection, in the pathogenesis of sexual distress in women with DM-1. METHODS Seventy-seven women with uncomplicated DM-1 and 77 healthy controls were enrolled in the study. The Female Sexual Distress Scale (FSDS), the General Health Questionnaire-28, and the Parental Bonding Instrument were used to evaluate sexual distress, general health and bonding with parents, respectively. MAIN OUTCOME MEASURES To assess the role of parental bonding as risk factor for sexual distress, in women with DM-1. RESULTS Women with DM-1 had significantly higher FSDS scores compared with controls. Furthermore, women with DM-1 had significantly higher maternal and paternal care, and lower maternal overprotection in comparison with the healthy ones. Paternal overprotection and general health were similar in both groups (P > 0.05). Sexual distress was more frequent in women with DM-1 (31.43% vs. 8.57% of controls, P < 0.05). Diabetic women with sexual distress had lower maternal care, higher maternal overprotection and lower paternal overprotection compared to diabetics without sexual distress (P < 0.05). No difference was found in the paternal care between the two groups (P > 0.05). Moreover, sexually distressed DM-1 women had worse general health parameters in comparison with the non-sexually distressed diabetics (P < 0.05). In the DM-1 group, low maternal care and low paternal overprotection were significant risk factors for sexual distress (P < 0.05). CONCLUSIONS Parental care and overprotection can lead to sexual distress and, therefore, to Female Sexual Dysfunction in DM-1 women. Evaluation of parental bonding is necessary in DM-1 women with distressing sexual problems.
Translational Andrology and Urology | 2018
Konstantinos Dimitropoulos; Vassilios Tzortzis
Cancer progression can be affected by a number of factors that cannot be totally explained. Growing evidence in the literature reports that, among various parameters, type of anesthesia and perioperative pain control may alter prognosis of different type of cancers (1-4).
Hormones (Greece) | 2011
Alexandra Bargiota; Konstantinos Dimitropoulos; Vassilios Tzortzis; Georgios N Koukoulis
World Journal of Urology | 2016
Michael Samarinas; Konstantinos Dimitropoulos; Ioannis Zachos; Stavros Gravas; Anastasios Karatzas; Vasileios Tzortzis
Andrologia | 2016
Konstantinos Dimitropoulos; Anastasios Karatzas; Christos N. Papandreou; D. Daliani; Ioannis Zachos; L. L. Pisters; Vassilios Tzortzis
The Journal of Sexual Medicine | 2010
Konstantinos Dimitropoulos; Alexandra Bargiota; I. Zachos; Georgios Koukoulis; Michael D. Melekos; Vassilios Tzortzis