La vita delle mostre

Il quinto volume della collana \u201cFare storia\u201d raccoglie interventi di esperti che, chiamati a riflettere sul tema generale delle mostre, hanno messo in evidenza alcuni aspetti fondamentali delle pratiche che interessano questo ambito sempre pi\uf9 vivace. Il collezionismo, le mostre d'arte e d'architettura e i musei della citt\ue0: dall'archeologia urbana all'arte contemporanea, dal MoMA alla Triennale, la ricchezza dei punti di vista proposti riconduce ad alcuni aspetti chiave le molteplici esigenze e problematiche del collezionare, dell'esporre e del comunicare. Tramite casi esemplari, volutamente non circoscritti a un unico ambito spazio-temporale, il volume vuole contribuire al dibattito contemporaneo che riguarda le modalit\ue0 di allestimento e di interpretazione delle mostre, proponendosi sia come strumento operativo sia come contributo storiografico

Long-term moderate zinc supplementation increases exchangeable zinc pool masses in late-middle-aged men: the Zenith Study

The ZENITH study is supported by the European Commission “Quality of Life and Management of Living Resources” Fifth Framework Program, Contract No : QLK1-CT-2001-00168International audienceBACKGROUND: Zinc supplementation may be beneficial for health. Assessing exchangeable zinc pools may be a useful approach to evaluate zinc status. OBJECTIVE: We evaluated the effects of long-term supplementation with 2 moderate doses of zinc on the mass of exchangeable zinc pools. DESIGN: Three groups of healthy, late-middle-aged men (n = 16 per group) participated in a stable-isotope zinc kinetic study after 6 mo of daily supplementation with 0 (placebo), 15, or 30 mg Zn. At the end of the supplementation period, each subject received an intravenous injection of 0.89 mg (70)Zn, and the plasma zinc disappearance curve was monitored for the next 10 d. Two approaches were used to determine the characteristics of the exchangeable zinc pools: 1) formal 3-compartmental modeling and 2) a simplified determination of the total mass of the rapidly exchangeable zinc pool (EZP). RESULTS: In the placebo group, the exchangeable zinc pool masses for the 3 considered pools were as follows: 2.15, 12.7, and 100.5 mg Zn. The rapidly exchangeable zinc pool mass in the placebo group was 143 mg Zn. Zinc supplementation significantly increased the exchangeable zinc pool masses regardless of the approach used to determine these pools. In addition, these data confirm that exchangeable zinc pool masses correlate positively with total zinc intake and negatively with subject age and do not correlate with plasma zinc concentrations. CONCLUSION: Our data show that long-term supplementation with 2 moderate doses of zinc is an efficient way to increase exchangeable zinc pool masses in late-middle-aged men