Dysmetabolic hyperferritinemia is associated with normal transferrin saturation,mild hepatic iron overload,and elevated hepcidin

Hyperferritinemia is common in individuals with the metabolic syndrome (dysmetabolic hyperferritinemia), but its pathophysiology and the degree to which it reflects tissue iron overload remains unclear. We conducted a cross-sectional study evaluating ten cases with dysmetabolic hyperferritinemia for liver iron overload and compared their serum iron indices and urine hepcidin levels to healthy controls. Seven out of ten cases had mild hepatic iron overload by magnetic resonance imaging (MRI) (median, 75 μmol/g dry weight). Cases had higher serum ferritin than controls (median, 672 μg/L vs. 105 μg/L, p < 0.001), but the median transferrin saturation was not significantly different (38% vs. 36%, p = 0.5). Urinary hepcidin was elevated in dysmetabolic hyperferritinemia (median; 1,584 ng/mg of creatinine vs. 799 ng/mg of creatinine, p = 0.05). Dysmetabolic hyperferritinemia is characterized by hyperferritinemia with normal transferrin saturation, elevated hepcidin levels, and mild liver iron overload in a subset of patients.     

Approach and avoidance motivation in eating disorders

It has been proposed that approach and avoidance processes may be critically involved in the development and maintenance of eating disorders (EDs), including anorexia nervosa (AN) and bulimia nervosa (BN). The Behavioural Inhibition System and Behavioural Activation System Scales (BIS/BAS) and Appetitive Motivation Scale (AMS) questionnaires were administered to 286 participants: 91 healthy controls (HCs), 121 participants with a current ED, either AN (restrictive and binge purge subtypes), or BN and 74 participants recovered from an ED. Individuals with EDs had higher levels of sensitivity to punishment and lower levels of reward reactivity than controls. Individuals in recovery from an ED scored the same as those in the acute group, with the exception of BAS fun seeking, for which they scored significantly higher than those with restricting AN. Discriminant analysis revealed that HCs were maximally separated from those in the acute and recovered ED groups along a dimension reflecting high punishment sensitivity and low reward sensitivity. Classification analysis demonstrated that ED and HC group membership was predicted from reward and punishment sensitivity measures; however recovered participants tended to be misclassified as ED. This study suggests high punishment sensitivity and low reward reactivity/sensitivity might form a personality cluster associated with the risk of developing an ED.     

Targeting of the pedunculopontine nucleus by an MRI-guided approach: a cadaver study

Laboratory evidence suggests that the pedunculopontine nucleus (PPN) plays a central role in the initiation and maintenance of gait. Translational research has led to reports on deep brain stimulation (DBS) of the rostral brainstem in parkinsonian patients. However, initial clinical results appear to be rather variable. Possible factors include patient selection and the wide variability in anatomical location of implanted electrodes. Clinical studies on PPN DBS efficacy would, therefore, benefit from an accurate and reproducible method of stereotactic localization of the nucleus. The present study evaluates the anatomical accuracy of a specific protocol for MRI-guided stereotactic targeting of the PPN in a human cadaver. Imaging at 1.5 and 9.4?T confirmed electrode location in the intended region as defined anatomically by the surrounding fiber tracts. The spatial relations of each electrode track to the nucleus were explored by subsequent histological examination. This confirmed that the neuropil surrounding each electrode track contained scattered large neurons morphologically consistent with those of the subnucleus dissipatus and compactus of the PPN. The results support the accuracy of the described specific MR imaging protocol.     

Simultaneous Treatment of Female Urethral Diverticulum and Stress Urinary Incontinence with Urethral Diverticulectomy and Suburethral Synthetic Mesh Sling

Objectives: Pubovaginal fascial sling along with urethral diverticulectomy has been advised as the most appropriate anti‐incontinence procedure for female stress urinary incontinence (SUI) with concomitant urethral diverticula (UD). We believe that suburethral synthetic mesh tape sling can also be safely used in some patients with concomitant SUI and UD. Herein, we present our experience for simultaneous treatment of UD and SUI with urethral diverticulectomy and suburethral synthetic mesh tape sling. Methods: From 2003 to 2008, there are three patients with UD and SUI in our institution. They received transvaginal urethral diverticulectomy and suburethral synthetic mesh tape sling simultaneously. Videourodynamics was done before and three months after the surgery. Results: Preoperative pelvis magnetic resonance imaging and videourodynamic study showed UD over distal urethra and SUI in all three patients. Urinalysis disclosed mild pyuria in two of the patients, and they both received intravenous antibiotics treatment to eradicate the infection prior to the surgery. They all underwent urethral diverticulectomy with suburethral synthetic mesh tape sling. The postoperative videourodynamic study showed no recurrence of UD and SUI. With a mean follow up of 33.3 months, there was no infection or exposure of synthetic mesh tape. Conclusions: In patients with UD and SUI, suburethral sling using synthetic mesh can be as effective and safe as facial sling in selected patients.