Nephrotoxicity issues of organophosphates.

Organophosphates are a large class of chemicals, initially invented in 1850 and since then they have been applied in numerous aspects of science to serve our purposes. Their mechanism of action in living organisms involves the irreversible inhibition of acetylcholinesterase, therefore they interfere with neuromuscular signal transmission. Due to the systematic and exaggerated use of these chemicals, there is massive exposure to them, hence there is great concern regarding the ramifications to all mammalian organisms. It has been widely accepted that over-exposure to organophosphates, has a deleterious impact on the renal tissue and subsequently on the renal function. Despite the significance of this global issue, limited knowledge exists, regarding the effect of these substances on our health. Therefore, new and extensive research is required to expand our knowledge and ensure proper guidance regarding the use of organophosphates as well the protection against their detrimental consequences. The aim of this review is to negotiate the effect of organophosphate exposure on renal tissue and kidney function.

Varicocele embolization: Anatomical variations of the left internal spermatic vein and endovascular treatment with different types of coils.

PURPOSE: To present anatomical variations of left internal spermatic vein and a comparison between treatments with hydrogel-coated and non-coated platinum coils in patients with varicocele. MATERIALS AND METHODS: A total of 153 men (mean age, 27.5±6.7 [SD] years; range: 18-45 years) with left sided varicocele underwent coil embolization. Anatomic variants of gonadal vein were categorized into five subtypes (I-V). Additional venous collaterals were also recorded. Three types of coils were used (hydrogel coated platinum coils, fibered coils and non-coated platinum coils). Technical success, tolerance, efficacy and safety of hydrogel coated platinum coils were recorded. Comparison between different types of coils used was made. Fisher's exact test was used for statistical analysis. RESULTS: Varicoceles were classified as type I (26.1%), type II (13.7%), type III (32.1%), type IV (18.3%) and type V (9.8%). The internal spermatic vein - renal vein angle ranged from 32°-128° (mean angle, 93.5°). Technical success was achieved in 145 patients (94.8%) without complications. The mean number of coils used was 3 (range: 1-6 coils). A total of 260 hydrogel coated platinum coils in 95 patients and 135 non-coated coils in 50 patients were deployed with no complications. No differences were noted between the different types of coils used regarding embolic efficacy and safety. A 6.2% (9/145) recurrence rate and a 33.3% (14/42) fertility rate were observed. Clinical success regarding symptom relief after painful varicocele embolization was 100% (36/36) for technically successful cases. CONCLUSION: Varicocele embolization with the use of hydrogel coated or non-coated platinum coils is technically feasible and safe without complications. No superiority of one type of coil over the other was found.

Intrauterine device migration to the urinary bladder causing sexual dysfunction: a case report.

BACKGROUND: Intravesical migration represents an uncommon complication of intrauterine device (IUD) insertion. We present the case of an IUD that migrated to the urinary bladder, causing significant sexual complaints. CASE REPORT: A 38-year-old woman presented with complaints of gradually evolving dyspareunia and recurrent urinary tract infections during the past 12 months. She reported an IUD insertion 18 months before. Further detailed evaluation revealed disorders in all sexual domains. Imaging and cystoscopy detected the presence of IUD in the urinary bladder. Under anesthesia, the IUD was removed out of the bladder without any complications. In her follow-up evaluation after six months, her sexual function was significantly improved and she had no urinary symptoms. CONCLUSION: Sexual difficulties in a woman with an IUD should raise the suspicion of device dislodgement or dislocation. Hippokratia 2016, 20(1): 70-72.

Sexual dysfunction in testicular cancer patients subjected to post-chemotherapy retroperitoneal lymph node dissection: a focus beyond ejaculation disorders.

Post-chemotherapy retroperitoneal lymph node dissection (PC-RPLND) represents an integral part of multidisciplinary treatment of advanced germ cell cancer; however, it is associated with a high complications rate. The present study aimed to describe sexual disorders in 53 patients with testicular cancer who underwent full bilateral, non-nerve-sparing PC-RPLND in our institution, focusing beyond ejaculatory dysfunction. The International Index for Erectile Function (IIEF) questionnaire was used as diagnostic tool of male sexual functioning pre-operatively and three months after RPLND, while post-operatively patients were asked to describe and evaluate changes in selected sexual parameters. Study findings demonstrate mixed pattern of changes in sexual functioning, with no difference in erectile functioning before and after operation. However, orgasmic function and intercourse and overall sexual satisfaction were found significantly impaired post-operatively. Sexual desire and frequency of attempted sexual intercourses were found significantly increased post-operatively, in comparison with pre-operative levels. With regard to patients' subjective perception on sexual functioning alterations after PC-RPLND, a significant number of patients reported higher levels of sexual desire, no difference in erectile function and worse orgasmic function and satisfaction post-operatively. Thus, patients subjected to PC-RPLND should be closely and routinely evaluated due to close relationship of sexual dissatisfaction with secondary psychological disorders.

Dissatisfaction with male sexual performance and female sexual dysfunction in women with type 1 diabetes.

Although partnership issues are thought to be implicated in female psychology and sexual life, no data exist on the relationship between dissatisfaction with male sexual performance and female sexual dysfunction (FSD) in women with type 1 diabetes mellitus (DM-1). We studied 70 women with uncomplicated DM-1 and 100 nondiabetic women using Female Sexual Function Index (FSFI), Female Sexual Distress Scale (FSDS) and a Likert Scale to evaluate sexual function, sexual distress and the degree of satisfaction derived from the male partner's sexual performance. Compared with healthy controls, DM-1 women had significantly worse sexual function, higher sexual distress and higher FSD frequency. No significant difference in dissatisfaction with partner's sexual performance was found between diabetic and control group (CG). Moreover, dissatisfied diabetic and control women were comparable in sexual functioning, sexual distress and FSD frequency. In the CG, dissatisfied women had significantly worse total FSFI score compared with the satisfied ones. In addition, dissatisfaction with male sexual performance led to significantly worse FSDS score and higher FSD frequency in both diabetic and CGs. Therefore, our findings reveal a negative association between dissatisfaction with male partner's sexual performance and female sexual functioning, regardless of the presence of diabetes.

Sexual function in pre- and post-menopausal women with obstructive sleep apnea syndrome.

The objective of this study was to evaluate the female sexual function in relation to hormonal status in pre- and postmenopausal women with obstructive sleep apnea (OSA). A total of 43 premenopausal (mean age 42.1±4.9) and 58 postmenopausal (mean age 59.9±4.8) women were included in the study. All women filled out the Epworth sleepiness scale (ESS), the Beck Depression Inventory (BDI) and the Female Sexual Function Index (FSFI). Testosterone, estradiol and progesterone were measured. After polysomnography, women were allocated to a not-severe OSA group (Apnea-Hypopnea Index (AHI) 10-30) and a severe OSA group (AHI >30). Healthy subjects comprised the control group. Severe OSA women in both pre- and post-menopausal group were found to have significantly lower mean FSFI score (16.5±4.0 and 16.9±4.7, respectively) compared with not-severe OSA (23.4±5.5, P<0.01 and 21.8±7.5, P<0.05) and control subjects (27.0±5.5, P<0.01 and 24.0±6.7, P<0.01). Progesterone, which was significantly lower in severe OSA premenopausal women (0.26±0.2) compared with not-severe OSA (0.55±0.14, P<0.01) and control group (0.62±0.16, P<0.01), correlated significantly with FSFI (r=0.39, P<0.01). Our study demonstrated that OSA is associated with sexual dysfunction in both premenopausal and postmenopausal women in a dose-related fashion. Regarding premenopausal women, our results indicated that progesterone may play a role in the association between OSA and female sexual dysfunction.

Molecular pathogenesis of non muscle-invasive bladder cancer: implications for novel targeted therapies.

Approximately 70% to 80% of patients with urothelial carcinomas of the bladder are initially diagnosed with non-muscle invasive disease. Superficial, non-muscle invasive bladder cancers (NMIBCs) are managed with cystoscopic transurethral resection of all visible lesions followed by intravesical chemotherapy and/or immunotherapy. Despite this treatment, up to 70% of these tumors will recur within five years and 15% will ultimately progress to muscle-invasive disease, suggesting that novel therapeutic strategies are necessary. Recent studies have greatly advanced our understanding of urothelial carcinogenesis and have highlighted the distinct molecular pathogenesis of NMIBCs versus muscle-invasive bladder tumors. It is now clear that diverse genetic and epigenetic events are driving the oncogenesis of NMIBCs, thereby attesting to their potential as therapeutic targets for these tumors. This article reviews the molecular pathogenesis of NMIBCs, discusses recently completed and ongoing clinical trials and anticipates the future direction of molecular targeted agents in this disease.

[Cryotherapy for renal tumors: current status and contemporary developments]. / Crioterapia de tumores renales: estado actual y desarrollos contemporáneos.

The proportion of renal tumors found incidentally dramatically increased in the past decade. More than half of them were diagnosed in patients over 70 years of age, a population with high associated comorbidity. Nephron-sparing minimally invasive surgical procedures are aimed at treating patients with small renal tumors and multiple comorbidities. Cryotherapy stands out among all other ablative procedures because of its better mid-term oncological outcome. A non-systematic review of the literature on cryotherapy as a treatment for renal tumors was made, analyzing its indications, actual and future application techniques, results, and complications.

Crioterapia de tumores renales: estado actual y desarrollos contemporáneos / Cryotherapy for renal tumors: Current status and contemporary developments

La proporción de tumores renales incidentales ha incrementado drásticamente en la ultima década, siendo diagnosticados en más de la mitad de los casos en pacientes mayores de 70 años, población con una alta comorbilidad asociada. Las técnicas ablativas mínimamente invasivas conservadoras de parénquima están destinadas a tratar a pacientes con tumores renales pequeños y múltiple comorbilidad. La crioterapia destaca sobre otras técnicas ablativas por sus mejores resultados oncológicos a medio plazo. Realizamos una revisión no sistemática de la literatura médica analizando la crioterapia como tratamiento de los tumores renales, analizando sus indicaciones, las técnicas de aplicación actuales y las perspectivas de futuro, los resultados y las complicaciones (AU)

The proportion of renal tumors found incidentally dramatically increased in the past decade. More than half of them were diagnosed in patients over 70 years of age, a population with high associated comorbidity. Nephron-sparing minimally invasive surgical procedures are aimed at treating patients with small renal tumors and multiple comorbidities. Cryotherapy stands out among all other ablative procedures because of its better mid-term oncological outcome. A non-systematic review of the literature on cryotherapy as a treatment for renal tumors was made, analyzing its indications, actual and future application techniques, results, and complications (AU)

[Extensive stone formation in the prostatic bed following enucleation of an adenoma. Combined endourological treatment of an interesting case]. / Ausgedehnte Steinbildung in der Prostataloge nach Adenomenukleation. Endourologische Kombinationstherapie zur Behandlung dieses interessanten Falles.

We report on a patient with extensive stone formation in the prostatic bed 4 years after open suprapubic prostatectomy for benign prostatic hyperplasia. The patient was successfully treated with a combination of transurethral and percutaneous suprapubic lithotripsy in the same session.

The use of tamsulozin as adjunctive treatment after ESWL in patients with distal ureteral stone: do we really need it? Results from a randomised study.

Our study aimed to define the position of tamsulosin as adjunctive therapy in patients with stones of the distal ureter who had undergone extracorporeal shock wave lithotripsy (ESWL). In total, 61 consecutive patients (38 men and 23 women) with single distal radiopaque ureteral stone of > or =6 mm of diameter were enrolled. After ESWL patients were randomized in two groups. Non-steroidal anti-inflammatory drug (supp. diclofenac 50 mg) was given to both groups upon demand. In group B, all patients (30) received additionally tamsulozin 0.4 mg every day. Follow-up visits were performed 1, 2, 3 and 4 weeks after ESWL. Evaluation included a KUB plain film and an ultrasound examination. Efficacy was evaluated in terms of success rate, stone-free rate, expulsion time of the fragments and use of diclofenac. Two patients from the tamsulosin group experienced dizziness and one was withdrawn. The success rate was 58.06 and 66.66% for the control and the tamsulosin group, respectively, while the corresponding values for stone-free rate were 51.6 and 63.33%, respectively. The mean expulsion time of the fragments was 13.22 days for group A and 12.95 days for group B. These results did not achieve statistically significant difference (P > 0.05). The mean diclofenac dose was 118.9 mg in group A and 56.9 mg in group B. This difference was statistically significant (P = 0.02). Despite the relatively small number of patients, our data indicate that the use of tamsulosin after ESWL in this specific subgroup of patients does not result in improved success and stone-free rate and expulsion time. In contrast, a significantly reduced need for analgesics was found.

Protective role of the glans penis during coitus.

To examine the hypothesis that the glans penis acts protectively, absorbing forces, during coitus. Five potent patients (mean age 46.8+/-9.7 y), who had indication for surgical excision of the glans for penile carcinoma were included in the present study. Intraoperatively, intracavernosal pressure (ICP) was adjusted by saline infusion and maintained by a pressure feedback infusion pump to a pressure value of 70 mmHg. Using a dynamometer, an external compressive force of 0.5 kg was applied at the glans penis and the changes in ICP were monitored. Measurements were repeated after surgical excision of the glans. Significant ICP changes were noticed in all patients after excision of the glans. Mean preoperative ICP was 161+/-11.5 mmHg, while after glansectomy it reached 206.6+/-13 mmHg. DeltaICP was 45.8+/-10.57 mmHg. Two of the patients' partners reported pain during intercourse postoperatively, possibly due to the impact of the force applied by the rigid corpora cavernosa on the anterior vaginal wall without any absorption by the glans. The glans penis restricts the increase in ICP during sexual intercourse, playing a protective role for both the corpora cavernosa and the female genitalia.

Normal hemodynamic parameters do not always predict the presence of a rigid erection: a quantitative assessment of functional erectile impairment.

The purpose was to assess objectively and quantitatively the hemodynamic status and the degree of functional erectile impairment in a group of impotent patients. A clinical study was designed, incorporating pharmacocavernosometry (to evaluate arterial and veno-occlusive function) with axial buckling forces and penile geometry measurements in a group of impotent patients. The pressure gradient between the intracavernosal pressure associated with the presence of penile axial rigidity and the equilibrium intracavernosal pressure was calculated (axial rigidity gradient, ARG); such methodology allowed a quantitative characterization of functional impairment, as ARG expresses the intracavernosal pressure increase necessary to achieve axial rigidity and therefore potency. Penile geometry characteristics were also expressed by calculating the penile aspect ratio (diameter/length, D/L). In 83 consecutive patients tested (mean age 42.89+/-9.96), rigidity occurred at intracavernosal pressures between 50 and 100 mm Hg. A conversely proportional relation was noticed between penile aspect ratio values and the intracavernosal pressure associated with rigidity values, clearly demonstrating the important functional role of penile geometry. ARG demonstrated a wide range of values (3-69 mm Hg), reflective of the severity of the erectile dysfunction on each patient. Half (50.6%) of the patients had ARG values < or =20 mm Hg, indicative of minimal and minimal-to-moderate erectile impairment, while 20.48% had ARG between 21-30 and 28.92% >30 mm Hg, indicative of moderate and severe erectile dysfunction (ED) respectively. In all, 6% of the study group, all of them with primary ED, ARG <20 mm Hg had normal hemodynamics, but low penile aspect ratio values indicating that penile geometry may be the cause of insufficient rigidity. Hemodynamic integrity is the most critical, but not the only determinant of penile rigidity, as erectile impairment may be noticed in patients with normal arterial inflow and corporal veno-occlusive function. In such cases, unfavorable penile geometry should be considered as the possible etiological factor of impotence.

Glansectomy: an alternative surgical treatment for Buschke-Löwenstein tumors of the penis.

OBJECTIVES: To present the surgical excision of the glans penis (glansectomy) as an alternative surgical treatment to penectomy. Buschke-Löwenstein tumors of the penis include the entities described in published reports as verrucous carcinoma and giant condyloma acuminatum of the penis. Both types are well-differentiated tumors, typically confined to the glans penis, with distinctly rare metastatic activity. METHODS: The study included 7 patients, 40 to 63 years of age, with exophytic, papillary lesions involving the glans penis. Biopsy led to the diagnosis of verrucous carcinoma in 4 patients and giant condyloma acuminatum in 3 patients. All patients reported normal erectile function. Because of the low malignant potential of the tumor and its confinement to the glans penis, a simple glansectomy was performed in all patients to preserve the maximal penile length and functional integrity of the corpora cavernosa. RESULTS: The postoperative course was uncomplicated. With 18 to 65 months of follow-up, all patients were disease free. One patient required more aggressive treatment because of local recurrence of the tumor. All patients returned to normal sexual activity 1 month postoperatively. The only change during sexual activity, noted by two of the patients' partners, was vaginal pain, possibly due to the absence of the glans. CONCLUSIONS: Glansectomy may be considered the treatment of choice in patients with Buschke-Löwenstein tumors of the penis, with more radical techniques reserved for second-line treatment.

Effects of oral phentolamine, taken before sleep, on nocturnal erectile activity: a double-blind, placebo-controlled, crossover study.

The objective of this study was to determine the effects of oral phentolamine, administered before sleep, on nocturnal penile erectile activity of men with mild to moderate erectile dysfunction (ED). We studied five patients with mild to moderate ED (mean age 34.8 +/- 8.13 and mean duration of ED 31.8 +/- 23.5 months), in a double-blind, placebo-controlled, crossover study. All patients received oral phentolamine (Vasomax) at a dose of 40 mg and placebo for three consecutive nights respectively and were submitted to nocturnal penile tumescence and rigidity monitoring (NPTR) with the Rigiscan device. NPTR parameters of the two 3-night recordings were evaluated and compared. Administration of oral phentolamine before sleep was associated with a statistically significant increase in the number of erectile events with rigidity > or = 60% lasting > or = 10 min (P = 0.02), as well as the rigidity activity units (RAU) value per hour sleep, both at the base (P = 0.023) and the tip of the penis (P = 0.019). The number of events as measured by Rigiscan software (20% change in circumference), as well as tumescence activity units (TAU)/h values did not show any statistical difference. No adverse effects were recorded. It is concluded that oral phentolamine administered before sleep enhanced NPTR parameters associated with the quality of the erectile events. Such results provide a pathway for the development of a prevention strategy for ED. Future studies will elucidate whether vasoactive agents taken on a regular basis before sleep, can prevent ED in men at risk, protecting also minimally and moderately impotent patients to become moderately and severely impotent respectively.

Sildenafil versus intracavernous injection therapy: efficacy and preference in patients on intracavernous injection for more than 1 year.

PURPOSE: To our knowledge comparative data on the effectiveness of and patient preference for intracavernous injection therapy and sildenafil are still not available. We evaluated the efficacy of sildenafil as well as patient preference in a group of impotent men on intracavernous injection for more than a year. MATERIALS AND METHODS: Patients on intracavernous injection therapy for more than a year without neurological disease and/or a contraindication to sildenafil treatment were recruited for study. In phase 1 we determined the efficacy of 50 and 100 mg. sildenafil citrate at home. In phase 2 responders to sildenafil were asked to use the preferred dose orally for a month and choose intracavernous injection or sildenafil. In phase 3 patients were asked to continue either treatment for 3 more months. Patient preferences were reported at the end of phases 2 and 3. RESULTS: Of the 180 men recruited 155 with a mean age of 56.4 +/- 12.6 years on intracavernous injection for a mean of 26 +/- 9 months accepted and were included in our series. Overall 116 men (74.8%) responded to sildenafil during study phase 1. After 1 month of treatment 71 responders (61.2%) preferred to continue with the oral drug, 31 (26.7%) returned to intracavernous injection and 14 (12.1%) used each drug alternately. Three months later 74 of the 116 responders (63.8%) preferred oral treatment and 38 (32.8%) chose intracavernous injection, while 4 (3. 4%) continued to use each treatment alternately. CONCLUSIONS: Sildenafil is highly effective in intracavernous injection responders, although a certain group prefer to continue intracavernous injection. While sildenafil should be considered first line treatment, men with erectile dysfunction should be aware of all treatment options available because nonresponders to sildenafil may respond to intracavernous injection.