Perineural invasion on biopsy specimen as predictor of tumor progression in aging male treated with radical prostatectomy. Could we use it for pre-surgical screening?

We aimed to analyze the correlation of perineural invasion on transrectal ultrasound guided prostate biopsy with predictors of biochemical cancer recurrence, as well as its impact on clinical outcomes, for non-metastatic prostate cancer. For the study, patients with perineural invasion (N = 86) were recruited into group I and underwent open retropubic prostatectomy, regardless of clinical stage; cases with prostate cancer but without perineural invasion on biopsy, who received radical prostatectomy as the treatment modality, were placed into group II (n = 90). Perineural invasion was detected preoperatively in 43% of cases that revealed surgical margin positivity postoperatively, while 85% of the remaining cases (group II) had negative surgical margins. There was no correlation on prostate biopsy between perineural invasion and Gleason score or PSA, based on Sperman's rank-order correlation analysis. However, there was strong positive correlation of perineural invasion with clinical stage and patients age. Additionaly, we demonstrated that perineural invasion on biopsy is a non-independent risk factor for metastatic occurrence, although the correlation was significant in univariate analysis. Nevertheless, we found strong correlation between invasion on initial biopsy specimen with biochemical cancer recurrence, suggesting that perineural invasion on prostate biopsy is a significant predictor of worse prognostic outcome.

Up-converting nanoparticles synthesis using hydroxyl-carboxyl chelating agents: Fluoride source effect

The synthesis of lanthanide doped up-converting nanoparticles (UCNPs), whose morphological, structural, and luminescence properties are well suited for applications in optoelectronics, forensics, security, or biomedicine, is of tremendous significance. The most commonly used synthesis method comprises decomposition of organometallic compounds in an oxygen-free environment and subsequent infliction of a biocompatible layer on the particle surface. In this work, hydroxyl-carboxyl (-OH/-COOH) type of chelating agents (citric acid and sodium citrate) are used in situ for the solvothermal synthesis of hydrophilic NaY_0.5Gd_0.3F₄:Yb,Er UCNPs from rare earth nitrate salts and different fluoride sources (NaF, NH₄F, and NH₄HF₂). X-ray powder diffraction showed crystallization of cubic and hexagonal NaY_0.5Gd_0.3F₄:Yb,Er phases in nano- and micro-sized particles, respectively. The content of the hexagonal phase prevails in the samples obtained when Na-citrate is used, while the size and shape of the synthesized mesocrystals are affected by the choice of fluoride source used for precipitation. All particles are functionalized with citrate ligands and emit intense green light at 519 nm and 539 nm (²H_11/2, ⁴S_3/2 → ⁴I_15/2) under near infrared light. The intensity of this emission is distressed by the change in the origin of phonon energy of the host matrix revealed by the change in the number of the excitation photons absorbed per emitted photon.

Immunohistochemical study of cyclin A and p16 expression in patients with renal cell carcinoma

PURPOSE

Renal cell carcinoma (RCC) is the most common malignant kidney tumor in adults. Dysregulation of the cell cycle can lead to cancer development. In this study, the mitosis-associated cyclin A and p16, a negative controller, were investigated as potential key points in the RCC development.

METHODS

This retrospective study included 74 patients with RCC. The expression of cyclin A and p16 and their correlation to histopathological parameters (TNM stage, histological subtype, nuclear grade, tumor size), gender, age, and clinical outcome were studied and analyzed.

RESULTS

The highest median value for cyclin A (40%; range 0-70)) and for p16 (57.5%); range 35-80) were found in the papillary histological subtype. Survival analysis showed that in the group of patients that had died before September 2015, the median value for cyclin A was 20% (range 0-60), which was significantly higher than 5% (range 0-70), found in the group of patients that survived (p=0.019).

CONCLUSIONS

In relation to the histological subtype, the papillary type of RCC was associated with a significantly higher expression of cyclin A and p16 compared to other subtypes of RCC. High expression of cyclin A indicated worse prognosis, therefore cyclin A could be considered to be a significant prognostic marker.

Kidney injury secondary to endovascular treatment of renal artery stenosis

In this paper, we present a case of kidney injury as a complication of renal artery angioplasty in a 54-year-old female patient that suffered from resistant renovascular hypertension. This case emphasises the unpredictable nature of endovascular procedures, the need for careful post-procedure evaluation and the role of 'old fashioned' surgical techniques in resolving complications of endovascular procedures.

Comparison of the efficiency of combined extracorporeal shock-wave therapy and triple therapy versus triple therapy itself in Category III B chronic pelvic pain syndrome (CPPS)

The aim of this study is to determine the effect of combining extracorporeal shock-wave therapy (ESWT) and triple therapy versus triple therapy alone, when treating Category III B chronic prostatitis (CPPS). Study included 60 patients, classified as having CPPS, divided into two groups: the first group numbered 30 patients, who were treated with a combination of an α-blocker, an anti-inflammatory agent and a muscle relaxant; the second group consisted of 30 patients who received a combination of ESWT and the fore-mentioned triple therapy. Patients were treated for 12 weeks. The primary criterion of a response to therapy was scoring 2 or less on the NIH-CPSI quality of life item, while the secondary criterion of a response to therapy was a greater than a 50% reduction in NIH-CPSI pain score. Patients who received triple therapy did not show a significant change neither in post void residual urine (PVR) nor in maximum flow rate (Q_MAX), while the second group of patients exhibited significant improvement in both PVR and Q_MAX values. Both groups of patients showed statistically significant improvement in all items of the NIH-CPSI score after the treatment, with significantly better results in the second group.

A correlation between selenium and carnitine levels with hypo-osmotic swelling test for sperm membrane in low-grade varicocele patients

OBJECTIVE

The hypo-osmotic swelling (HOS) test predicts membrane integrity by determining the ability of the sperm membrane to maintain equilibrium between the sperm cell and its environment. The aim of our study was to determine the correlation between selenium and carnitine levels in the seminal fluid with HOS test for sperm membrane in low-grade varicocele patients.

PATIENTS AND METHODS

Study numbered 64 examinees who suffered from low-grade varicocele and were divided into two groups, according to fertility potential and HOS test outcome. The study also included a control group of 64 healthy subjects, with no varicocele.

RESULTS

From the Shapiro-Wilk's test, it is clear that carnitine distribution differs significantly from normal (0.938, p = 0.03). In distribution of selenium, Kolmogorov-Smirnov test clearly shows statistically significant deviation from the normal curve (z = 0.225, p < 0.000), likewise Shapiro-Wilk's statistic (0.787, p < 0.000). According to the results, the second group had significantly higher levels of carnitine and selenium than the first group of examinees (p < 0.05); therefore, when we compared epididymal markers with HOS tests outcomes, we found significant differences between the two groups. There were no significant differences between second group and healthy subjects (p > 0.05).

CONCLUSIONS

HOS test outcome in varicocele patients is directly proportional to the carnitine and selenium levels, which could play a major role in both determining fertility parameters and in the treatment of its impairment. This result is important for sub-clinical varicocele in infertile patients with normal semen analysis, since there is no evidence of benefit from any treatment so far.

Advantages of microsurgical varicocelectomy over conventional techniques

OBJECTIVE

Varicocelectomy is the only effective method of treating varicocele. Nowdays, many techniques for varicocelectomy include retroperitoneal, inguinal, and subinguinal varicocele repairs with or without magnification and laparoscopic repair. The advantages of the microsurgical approach to varicocele repairs are reliable identification and preservation of the vascular structures. Thus, our aim is to compare the efficiency of microsurgery over conventional techniques of varicocele repairs.

PATIENTS AND METHODS

We have evaluated 105 man divided into three groups of 35 patients surgically treated with open varicocelectomy in the first group, microsurgical varicocelectomy in the second, and laparoscopic varicocelectomy in the third group. Sperm test improvement and complications were then compared.

RESULTS

The testicular volume shows a significant increase after all three types of surgery, the highest one being after the laparascopic varicocelectomy (14.47 ± 6.76 vs. 21.8 ± 7.52), whereas the lowest increase was recorded in open varicocelectomy (14.90 ± 6.26 vs. 17.46 ± 5.89). Regarding motility of spermatozoids, the highest postoperative increase of values is after microsurgical varicocelectomy (4.30 ± 2.19 vs. 15.88 ± 3.13).

CONCLUSIONS

Our study shows the lowest degree of postoperative complications among patients treated with microsurgical varicocelectomy, and the most frequent complications in those treated by open varicocelectomy. Sperm test outcomes after microsurgical varicocelectomy was better than those after other conventional techniques: significantly higher improvement of sperm quality, shoter postsurgical clinical treatment, and the lowest rate of postsurgical complications.

Effect of obesity on patient-reported outcomes in sarcoidosis

OBJECTIVES

To assess the impact of high body mass index (BMI) on patient-reported outcomes in sarcoidosis patients and healthy persons.

METHODS

In this case-control study, we investigated symptoms of fatigue and dyspnoea, health status, BMI and spirometric tests in 184 sarcoidosis patients and the same number of sex- and age-matched healthy subjects. Fatigue was assessed using the fatigue scale (FS), dyspnoea was determined by the baseline dyspnoea index (BDI) and health status was measured using the respiratory-specific St George's Respiratory Questionnaire (SGRQ).

RESULTS

There were significantly more subjects with increased BMI (≥25 kg/m(2)) among the sarcoidosis patients than among the healthy volunteers ((2) 37.675, P < 0.01). Sarcoidosis patients also had a greater probability of having a higher BMI (P < 0.01, OR 1.18, 95%CI 1.071.3). We found significantly lower BDI scores and forced expiratory volume in 1 s/forced vital capacity, as well as higher total SGRQ and total FS scores in sarcoidosis patients than in healthy individuals (P < 0.01 for all differences).

CONCLUSION

Sarcoidosis significantly reduces patients' health status, both independently and also due to increased BMI. Reduction in BMI may contribute to improved spirometry results and health status of patients with sarcoidosis.