PMID- 31243722 OWN - NLM STAT- MEDLINE DCOM- 20191121 LR - 20200626 IS - 1678-4405 (Electronic) IS - 1517-8382 (Print) IS - 1517-8382 (Linking) VI - 50 IP - 3 DP - 2019 Jul TI - Increased serum ferritin and interleukin-18 levels in children with dengue. PG - 649-656 LID - 10.1007/s42770-019-00105-2 [doi] AB - Activated monocytes/macrophages that produce a cytokine storm play an important role in the pathogenesis of dengue. Interleukin-18 (IL-18) is a proinflammatory cytokine produced by monocyte/macrophages that is increased during dengue. Ferritin is an acute-phase reactant and expressed by cells of the reticulo-endothelial system in response to infection by dengue virus. The aims of this study were to analyze the simultaneous expression of both IL-18 and ferritins in children infected by diverse serotypes of dengue virus (DENV) and determine their association with dengue severity. In this regard, children with dengue (n = 25) and healthy controls with similar age and sex (n = 20) were analyzed for circulating ferritin and cytokines. Monocytes were isolated by Hystopaque gradient and co-cultured with DENV-2. IL-18 and ferritin contents in blood, and IL-18 in culture supernatants were determined by ELISA. Increased levels of ferritin and IL-18 (p < 0.0001) were observed in dengue patients, not associated to NS1expression or type of infection (primary or secondary). Highest values of both molecules (p < 0.001) were observed in dengue with warning signs and severe dengue. Differential effect on IL-18/ferritin production was observed associated to viral serotype infection. There were no correlations between ferritin vs. IL-18 production, ferritin vs. NS1 status, and IL-18 vs. NS1 status. Viral-infected monocyte cultures showed increased production of IL-18 (p < 0.001). In conclusion, increased circulating ferritin and IL-18 are expressed in children infected by different serotypes of DENV associated with dengue severity. FAU - Valero, Nereida AU - Valero N AD - Instituto de Investigaciones Clinicas "Dr. Americo Negrette", Facultad de Medicina, Universidad del Zulia, Apartado Postal 23, Maracaibo, Zulia, 4001-A, Venezuela. valero.nereida@gmail.com. AD - Universidad Estatal del Sur de Manabi, Jipijapa, Ecuador. valero.nereida@gmail.com. FAU - Mosquera, Jesus AU - Mosquera J AD - Instituto de Investigaciones Clinicas "Dr. Americo Negrette", Facultad de Medicina, Universidad del Zulia, Apartado Postal 23, Maracaibo, Zulia, 4001-A, Venezuela. FAU - Torres, Mariana AU - Torres M AD - Instituto de Investigaciones Clinicas "Dr. Americo Negrette", Facultad de Medicina, Universidad del Zulia, Apartado Postal 23, Maracaibo, Zulia, 4001-A, Venezuela. FAU - Duran, Anyelo AU - Duran A AD - Instituto de Investigaciones Clinicas "Dr. Americo Negrette", Facultad de Medicina, Universidad del Zulia, Apartado Postal 23, Maracaibo, Zulia, 4001-A, Venezuela. FAU - Velastegui, Maria AU - Velastegui M AD - Instituto de Investigaciones Clinicas "Dr. Americo Negrette", Facultad de Medicina, Universidad del Zulia, Apartado Postal 23, Maracaibo, Zulia, 4001-A, Venezuela. FAU - Reyes, Javier AU - Reyes J AD - Universidad Estatal del Sur de Manabi, Jipijapa, Ecuador. FAU - Fernandez, Miriam AU - Fernandez M AD - Facultad Ciencias de la Salud, Universidad Tecnica de Ambato, Ambato, Ecuador. FAU - Fernandez, Gerardo AU - Fernandez G AD - Facultad Ciencias de la Salud, Universidad Tecnica de Ambato, Ambato, Ecuador. FAU - Veliz, Teresa AU - Veliz T AD - Universidad Estatal del Sur de Manabi, Jipijapa, Ecuador. LA - eng PT - Journal Article DEP - 20190626 PL - Brazil TA - Braz J Microbiol JT - Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] JID - 101095924 RN - 0 (Cytokines) RN - 0 (Interleukin-18) RN - 9007-73-2 (Ferritins) SB - IM MH - Adolescent MH - Child MH - Child, Preschool MH - Cytokines/metabolism MH - Dengue/*blood/diagnosis/metabolism/virology MH - Dengue Virus/classification/genetics/isolation & purification/physiology MH - Enzyme-Linked Immunosorbent Assay MH - Female MH - Ferritins/*blood MH - Humans MH - Infant MH - Interleukin-18/*blood MH - Macrophages/metabolism MH - Male MH - Monocytes/metabolism MH - Serogroup MH - Severity of Illness Index PMC - PMC6863311 OTO - NOTNLM OT - Children OT - Dengue OT - Ferritin OT - IL-18 COIS- The authors declare that they have no conflict of interest. EDAT- 2019/06/28 06:00 MHDA- 2019/11/22 06:00 PMCR- 2020/06/26 CRDT- 2019/06/28 06:00 PHST- 2019/01/10 00:00 [received] PHST- 2019/06/12 00:00 [accepted] PHST- 2019/06/28 06:00 [pubmed] PHST- 2019/11/22 06:00 [medline] PHST- 2019/06/28 06:00 [entrez] PHST- 2020/06/26 00:00 [pmc-release] AID - 10.1007/s42770-019-00105-2 [pii] AID - 105 [pii] AID - 10.1007/s42770-019-00105-2 [doi] PST - ppublish SO - Braz J Microbiol. 2019 Jul;50(3):649-656. doi: 10.1007/s42770-019-00105-2. Epub 2019 Jun 26.