Renal thorium deposition associated with transitional cell carcinoma: radiologic demonstration in two patients

Abdominal radiography, excretory urography, retrograde pyelography, and computed tomography were performed in two patients who had undergone retrograde pyelography with thorium dioxide (Thorotrast) approximately 40 years ago. Both patients developed a transitional cell carcinoma due to suburothelial thorium deposition. Typical thorium densities were demonstrated at CT in the peripelvicalyceal area as well as in retroperitoneal lymph nodes. Elderly patients in whom radiographic examination reveals retained Thorotrast in the kidney should be followed up because of the high risk of renal carcinoma.     

Effect of Solanum surattense seed on the oxidative potential of cauda epididymal spermatozoa

Objective

To evaluate the effect of aqueous seed extract of Solanum surattense (S. surattense) on the oxidative potential of cauda epididymal spermatozoa.

Methods

S. surattense seed extract was orally administered at the dosage of 10 mg/kg b.w. for 15 days, after which aspartate transferase (AST), alanine transferase (ALT), glutamate dehydrogenase (GDH), citric acid and iso-citrate dehydrogenase (ICDH) were assayed.

Results

The activity levels of the enzymes AST and ALT, which are considered to be the androgenicity in the sperm suspension, were depleted in the extract fed rats. The activity level of the enzyme ICDH, was reduced significantly in the treated group (P<0.001).

Conclusions

It can be concluded that the oral administration of the aqueous seed extract of S. surattense can deplete the oxidative stress of cauda epididymal spermatozoa in albino rats.     

Does intubated uretero-ureterocutaneostomy provide better health-related quality of life than orthotopic neobladder in patients after radical cystectomy for invasive bladder cancer?

Objectives  

Ileal orthotopic neobladder (ONB) has not proved to provide better health-related quality of life (HRQoL) than other urinary diversion techniques after radical cystectomy. The aim of the study is to compare HRQoL assessed by four questionnaires between ONB and uretero-ureterocutaneostomy (UUC).     

Protective effect of sivelestat,a neutrophil elastase inhibitor,on ipsilateral and contralateral testes after unilateral testicular ischaemia–reperfusion injury in rats

What’s known on the subject? and What does the study add? Following ischemic damage, reperfusion may cause further injury paradoxically in the ischemic tissue, known as reperfusion injury. Decreased blood flow causes hypoxia, leading to increased levels of lactic acid, hypoxanthine, and lipid peroxides in ischemic tissues and subsequent increase in blood flow after lipid peroxidation produces reactive oxygen species. In addition, several experimental studies and clinical trials demonstrated that unilateral testicular torsion has a detrimental effect also to the contralateral testis. Although the basic pathological mechanism underlying testicular ischemia/reperfusion injury has not been completely understood, it has been shown that reactive oxygen species formed during ischemia/reperfusion play the key role in this process. In the international literature there is no information available regarding the effects of neutrophil elastase inhibitors such as sivelestat sodium aminoacetate tetrahydrate on the ischemia/reperfusion injury of the testis. In this study we investigated the effects of sivelestat in the testes bilaterally, after unilateral testicular ischemia/reperfusion injury using an experimental unilateral testicular ischemia/reperfusion rat model. We found that sivelestat reduces the oxidative stress and partially prevents the testicular damage both in the ischemic and in the contralateral testis.

OBJECTIVE

To investigate the effect of a neutrophil elastase inhibitor, sivelestat sodium hydrate, on testicular ischaemia–reperfusion (IR)‐injury.

MATERIAL AND METHODS

Eight‐week‐old male Sprague–Dawley rats were divided into four groups: sham‐operated control rats; IR rats (group IR); and IR rats that received intra‐abdominal administration of 15 mg/kg or 60 mg/kg sivelestat (group IR15 and group IR60, respectively). Right testicular vessels were clamped for 90 min in groups IR, IR15 and IR60. Sivelestat had been administered 45 min after the induction of the ischaemia in groups IR15 and IR60. In subpopulations of IR, IR15 and IR60 rats, reperfusion was performed after ischaemia for 2 h (groups IR‐A, IR15‐A and IR60‐A, respectively) or 48 h (groups IR‐B, IR15‐B and IR60‐B, respectively). At the end of the reperfusion period, blood samples were aspirated from both spermatic veins of each rat and testosterone was evaluated. Then both testes from all rats were collected and tissue levels of malondialdehyde (MDA), myeloperoxidase (MPO), and heat‐shock protein‐70(HSP‐70) were evaluated. Testicular tissue samples were also processed for histological evaluation and TUNEL staining.

RESULTS

MDA, MPO and HSP‐70 levels in the ischemic testis were significantly higher in the IR group compared with the control group. MDA and HSP‐70 in the contralateral testis were significantly higher in the IR group compared with the control group. Bilateral testosterone levels were lower in all rat groups in comparison with the control group. Bilateral testicular samples in group IR showed extensive histopathologic degenerative alterations and increased percentage of apoptotic cells. Sivelestat treatment lowered the MDA concentration and the percentage of apoptotic cells bilaterally and ameliorated the testicular histological pattern bilaterally.

CONCLUSIONS

Unilateral testicular ischaemia causes significant contralateral testicular damage. Sivelestat may be a novel adjunct tool for reducing oxidative stress and partially preventing bilateral testicular damage.     

Intermediate postchallenge hyperglycemia in overweight and obese subjects: a new marker of impaired glucose regulation?

The objective of this study was to compare subjects with intermediate postchallenge hyperglycemia (INPH) to those with normal glycemic status, impaired fasting glucose (IFG), and/or impaired glucose tolerance (IGT), as well as type 2 diabetes mellitus. Furthermore, the authors evaluated the impact of INPH on target organ damage. In total, 487 overweight and obese adults (BMI > or =27 kg/m(2)), 252 men and 235 women, mean age 52.9 +/-10.2 years, were studied. All participants underwent a clinical and laboratory evaluation, as well as an oral glucose tolerance test (OGTT). They were also investigated by echocardiography, carotid ultrasonography, and pulse wave analysis. Overall, 302 (62%) subjects had normal glycemic status, 64 (13.1%) had IFG and/or IGT, 95 (19.5%) had type 2 diabetes mellitus, and 26 (5.4%) had INPH. Individuals with INPH had an increased index of insulin resistance (higher homeostasis model assessment-insulinogenic index [HOMA-IR], p<0.0001), impaired insulin secretion (lower insulinogenic index, p<0.0001), and higher glycosylated hemoglobin (HbA(1c)) levels (p<0.0001) in comparison with the normoglycemic subjects, but not to those with IFG and/or IGT or diabetes (p = 0.6). No difference was observed concerning the risk factors studied, left ventricular mass and vascular remodeling, among subjects with INPH, IFG and/or IGT, and diabetes. However, individuals with INPH had a higher proportion of echolucent carotid artery plaques in comparison with the normoglycemic subjects (p = 0.04) and those with IFG and/or IGT (p = 0.01). Intermediate postchallenge hyperglycemia seems to represent a new category of glucose metabolism disturbances with increased atherogenic impact. Therefore, evaluating intermediate glucose levels in an OGTT could contribute to better identify overweight individuals at risk of developing diabetes mellitus and cardiovascular events.     

Detection of TMPRSS2-ERG fusion gene in benign prostatic hyperplasia

The Ets-related gene fusions are among the most common molecular alterations in prostate cancer (PCa) and are detected in more than 50 % of PCas. Transmembrane protease serine 2 and Ets-related gene fusion (TMPRSS2-ERG) is the most frequently identified chimeric gene and has been associated with undifferentiated and invasive phenotypes. TMPRSS2-ERG has also been detected in prostate intraepithelial neoplasia (PIN) lesions and more rarely in benign prostatic hyperplasia (BPH) regions mainly in PCa-bearing glands. The possibility that the fusion TMPRSS2-ERG may be present in BPH samples in the absence of apparent PCa was addressed. Out of 115 BPH samples, three were found positive employing RT-PCR. The presence of the fusion gene was confirmed by FISH for these samples, and an additional four samples were found to carry the TMPRSS2-ERG fusion out of 43 tested by the later approach. The presence of the TMPRSS2-ERG fusion did not result in altered expression of 12 putative downstream targets. These findings indicate that TMPRSS2-ERG may or may not lead to PCa development.