Can the electronic nose diagnose cronic rhinosinusitis? A new experimental study

In otorhinolaryngologist's experience the nasal out-breath of people affected by chronic nasal or paranasal infections may be characterized by peculiar odours. In a previous study we showed that an electronic nose (EN), examining nasal out breath was able to distinguish subjects affected by chronic rhinosinusitis from healthy subjects. The present study is aimed at analysing the intensity and the quality of the odorous components present in the air expired by patients affected by rhinosinusitis, using a new EN based on gas-chromatography and surface acoustic wave analysis. In the gas-chromatographic tracings of the pathologic subjects there were six peaks, which were not present in control group cases. These peaks correspond to odorous components, whose chemical composition ranges from C6 to C14. Peaks obtained were compaired with other tracings revealed from specific bacterial and fungal cultures analyses and we appreciated some analogies

Heteroepitaxial growth of ferromagnetic MnSb(0001) films on Ge/Si(111) virtual substrates

Molecular beam epitaxial growth of ferromagnetic MnSb(0001) has been achieved on high quality, fully relaxed Ge(111)/Si(111) virtual substrates grown by reduced pressure chemical vapor deposition. The epilayers were characterized using reflection high energy electron diffraction, synchrotron hard X-ray diffraction, X-ray photoemission spectroscopy, and magnetometry. The surface reconstructions, magnetic properties, crystalline quality, and strain relaxation behavior of the MnSb films are similar to those of MnSb grown on GaAs(111). In contrast to GaAs substrates, segregation of substrate atoms through the MnSb film does not occur, and alternative polymorphs of MnSb are absent

The myogenic transcriptional network

Myogenesis has been a leading model for elucidating the molecular mechanisms that underlie tissue differentiation and development since the discovery of MyoD. During myogenesis, the fate of myogenic precursor cells is first determined by Pax3/Pax7. This is followed by regulation of the myogenic differentiation program by muscle regulatory factors (Myf5, MyoD, Myog, and Mrf4) to form muscle tissues. Recent studies have uncovered a detailed myogenic program that involves the RP58 (Zfp238)-dependent regulatory network, which is critical for repressing the expression of inhibitor of DNA binding (Id) proteins. These novel findings contribute to a comprehensive understanding of the muscle differentiation transcriptional program

IRIS: methodological assessment of psychopathological disease in a cohort of hirsute women.

Hirsutism in females can be a source of considerable psychological distress and a threat to female identity. The aim of our study was to evaluate a possible relationship between facial, total body hair involvement and physical, mental and social well--being during 12 months of follow--up and treatment. Both objective and subjective methods of evaluating hirsutism were used: the Ferriman-Gallwey scoring method and the questionnaires GHQ--12, PCOSQ and SF--12. The total of 469 female patients (mean age 27.61±7.63 years) was enrolled in 27 Italian centres participating in this study. Higher total body score was correlated to significant emotional discomfort. The correlation between the FG total body score, the facial score and physical/mental health was found to be significant in all the patients assessed by SF--12 questionnaire. The ongoing reduction of GHQ--12 score was found for the facial FG score at the first follow--up (T0--T1 period) and at the second one (T0--T2). No relationship was found between T1 and T2. At both six (T1) and twelve months (T2) follow--up an increase of PCOSQ score (psychological improvement) was accompanied by a concomitant reduction of the FG score (reduction of hirsutism). Physical health assessed by SF--12 questionnaire does not change at both six and twelve months' follow--up, but mental health decreased at both T1 and T2. The clinical improvement was achieved at six months regardless on treatment used and it was maintained for the next six--month's follow--up. The clinical outcome could be assessed both by Ferriman--Gallwey score both through questionnaires administrated to each patient with hirsutism. For the evaluation of psychopathological discomfort the most appropriate questionnaire was GHQ--12, because of it major sensitivity to identify the psychological discomfort in the hirsutism