retroperitoneal fibrosis (rpf) is a rare condition with an unclear etiology, presenting with the development of aberrant chronic nonspecific fibroinflammatory tissue in the retroperitoneal space, which can result in entrapment and obstruction of the retroperitoneal structures. rpf is a subtype of chronic periaortitis, and can be divided into two types: primary (or idiopathic) and secondary. rpf...

Idiopathic retroperitoneal fibrosis (RPF) is a periaortic sclerotic disease that encases adjacent retroperitoneal structures, particularly the ureters. A subset of idiopathic RPF cases can be associated with IgG4related disease, but the frequency of this association is not clear. We selected 23 cases of idiopathic RPF and identified IgG4-related RPF cases based on the presence of IgG4+ plasma c...

Glomerular filtration rate (GFR), renal plasma flow (RPF), and electrolyte excretion were studied in 17 patients subjected to salt depletion and loading. Salt depletion led to maximal renal salt conservation with the average GFR and RPF slightly decreased. Salt loading produced increased excretion of sodium and chloride with the average GFR and RPF slightly increased. Since the decreased electr...

BACKGROUND In the coronary and the forearm circulations, endothelium-dependent vasomotion is impaired in smokers, but can be augmented by -arginine or vitamin C. We examined whether smoking similarly affects the renal circulation. METHODS In 20 smokers (age 26 +/- 4 years) and in 20 non-smokers (age 28 +/- 3 years) changes of renal plasma flow (RPF), glomerular filtration rate (GFR), blood pr...

Background/Aim. Retroperitoneal fibrosis (RPF) represents a chronic pathological process characterized by fibrosis which entraps and compresses the ureters and the great blood vessels in the retroperitoneal space. A specific form of RPF is idiopathic RPF, an uncommon collagen vascular disease of unclear etiology. The series of 15 patients which underwent open surgical repair due to idiopathic R...

In this paper we have proposed a practical approach for multicasting in wide area networks. It is a modification of the classical RPF approach. Though our approach is a modification of the RPF, it retains all the advantages of the RPF method and has an additional important advantage of efficient utilization of bandwidth by reducing the number of duplicate packets generated when compared to RPF....

PURPOSE We aimed to evaluate diffusion-weighted imaging (DWI) findings in patients with treated and untreated retroperitoneal fibrosis (RPF). METHODS We analyzed magnetic resonance imaging examinations of 44 RPF patients (36 male, 8 female), of which 15 were untreated and 29 were under therapy. Qualitative DWI and T1 postcontrast signal intensities and the largest perivascular extent of RPF w...

The Texas Commission on Environmental Quality (TCEQ) conducted a chronic inhalation noncancer toxicity assessment for crotonaldehyde (CRO). Since there were limited toxicity data for CRO, a reference value (ReV) was derived using a relative potency factor (RPF) approach with acrolein as the index chemical. Both CRO and acrolein are α,β-unsaturated carbonyls and share common steps in their mode ...

OBJECTIVE To examine the effects of rigid plate fixation (RPF) and subsequent removal on craniofacial growth in rabbits. DESIGN Randomized controlled experiment. SUBJECTS Thirty-two 6-week-old male New Zealand white rabbits. INTERVENTIONS Group 1 underwent exposure of the left nasofrontal suture and midzygomatic arch; group 2, RPF of the left nasofrontal suture and midzygomatic arch areas...

We describe the RPF web server, a quality assessment tool for protein NMR structures. The RPF server measures the 'goodness-of-fit' of the 3D structure with NMR chemical shift and unassigned NOESY data, and calculates a discrimination power (DP) score, which estimates the differences between the fits of the query structures and random coil structures to these experimental data. The DP-score is ...