title: Viral RNA kinetics is associated with changes in trace elements in target organs of Coxsackie virus B3 infection.
abstract: Trace elements are pivotal for the host defense, as well as potentially important for viral replication and virulence. Studies of sequential changes in viral replication in target organs of infection are sparse and a possible association with changes in specific trace elements is unknown. In this study Balb/c mice were infected with Coxsackie virus B3 (CVB3). Results indicated that sequential changes in viral replication (RT-PCR) were related to changes in trace element (arsenic, copper, iron, selenium and zinc) concentrations (as determined by ICP-MS) on days 3, 5 and 7 of the infection in serum, heart, lung, liver, pancreas, kidney, spleen, intestine and brain. After an initial viral peak on day 3, viral load drastically decreased in all organs, i.e. by >99% (serum), 97% (lung), 98% (liver), 60% (pancreas), 95% (kidney) and 93% (spleen), except in the heart, intestine and brain in which viral load increased after day 3. Selenium decreased in all organs except the heart while arsenic decreased in all organs except the kidney, spleen and brain. Moreover, selenium was negatively correlated to viral load in serum, liver, pancreas and intestine. To conclude, these findings give evidence that trace elements are directly involved in the replication of CVB3.
authors.affiliation: Infectious Diseases, Department of Medical Sciences, Uppsala University Hospital, Uppsala, Sweden. ylva.molin@medsci.uu.se
authors.forename: Ylva
authors.initials: Y
authors.lastname: Molin
authors.forename: Peter
authors.initials: P
authors.lastname: Frisk
authors.forename: Nils-Gunnar
authors.initials: NG
authors.lastname: Ilbäck
mesh_terms: D000825:Animal Structures / Q000737:chemistry* / Q000821:virology*; D000818:Animals; D029822:Enterovirus B, Human / Q000254:growth & development*; D004769:Enterovirus Infections / Q000821:virology*; D005260:Female; D051379:Mice; D008807:Mice, Inbred BALB C; D012367:RNA, Viral / Q000096:biosynthesis*; D013997:Time Factors; D014131:Trace Elements / Q000032:analysis*; D019562:Viral Load
chemical_list: D012367:RNA, Viral; D014131:Trace Elements