All posts by SleepRhythm

Natural alleles of the clock gene timeless differentially affect life-history traits in Drosophila

Andreatta G, Montagnese S, Costa R Front Physiol Circadian clocks orchestrate a variety of physiological and behavioural functions within the 24-h day. These timekeeping systems have also been implicated in developmental and reproductive processes that span more (or less) than 24 h. Whether natural alleles of cardinal clock genes affect entire sets of life-history traits […]

Circadian rhythms and the liver

Costa R, Mangini C, Domenie E, Zarantonello L, Montagnese S Liver Int This narrative review briefly describes the mammalian circadian timing system, the specific features of the liver clock, also by comparison with other peripheral clocks, the role of the liver clock in the preparation to food intake, and its relationship with energy metabolism. It […]

Hyperammonaemia disrupts daily rhythms reversibly by elevating glutamate in the central circadian pacemaker

Granados-Fuentes D, Cho K, Patti GJ, Costa R, Herzog E D, Montagnese S Liver Int Patients with cirrhosis exhibit features of circadian disruption. Hyperammonaemia has been suggested to impair both homeostatic and circadian sleep regulation. Here, we tested if hyperammonaemia directly disrupts circadian rhythm generation in the central pacemaker, the suprachiasmatic nuclei (SCN) of the […]

Driving simulator performance worsens after the Spring transition to Daylight Saving Time

Orsini F, Zarantonello L, Costa R, Rossi R, Montagnese S iScience Circadian desynchrony and sleep deprivation related to the Spring transition to Daylight Saving Time (DST) have been associated with several unfavorable outcomes, including an increase in road traffic accidents. As previous work has mainly focused on analyzing historical crash/hospitalization data, there is virtually no literature […]

Hepatic encephalopathy

Häussinger D, Dhiman RK, Felipo V, Görg B, Jalan R, Kircheis G, Merli M, Montagnese S, Romero-Gomez M, Schnitzler A, Taylor-Robinson SD, Vilstrup H Nat Rev Dis Primers Illustrated summary of the article Full text

Mitochondrial Cytochrome c Oxidase Defects Alter Cellular Homeostasis of Transition Metals

Brischigliaro M, Badocco D, Costa R, Viscomi C, Zeviani M, Pastore P, Fernández-Vizarra E Front Cell Dev Biol The redox activity of cytochrome c oxidase (COX), the terminal oxidase of the mitochondrial respiratory chain (MRC), depends on the incorporation of iron and copper into its catalytic centers. Many mitochondrial proteins have specific roles for the synthesis and […]

Toward a Molecular Approach to Chronotype Assessment

Biscontin A, Zarantonello L, Russo A, Costa R, Montagnese R J Biol Rhythms The aim of the present study was to develop a Polygenic Score-based model for molecular chronotype assessment. Questionnaire-based phenotypical chronotype assessment was used as a reference. In total, 54 extremely morning/morning (MM/M; 35 females, 39.7 ± 3.8 years) and 44 extremely evening/evening […]