PMID- 31665386 OWN - NLM STAT- MEDLINE DCOM- 20200423 LR - 20200630 IS - 1349-9157 (Electronic) IS - 0449-3060 (Print) IS - 0449-3060 (Linking) VI - 60 IP - 6 DP - 2019 Nov 22 TI - Inflammatory profile dysregulation in nuclear workers occupationally exposed to low-dose gamma radiation. PG - 768-779 LID - 10.1093/jrr/rrz059 [doi] AB - Chronic inflammation is a common denominator linking a wide range of health conditions, including tissue response to radiation exposure. This pilot study investigates whether inflammatory cytokines-interleukins IL-6, -8, -10, monocyte chemoattractant protein-1 (MCP-1) and tumor necrosis factor alpha (TNFalpha)-can be used as early biomarkers of radiation-induced adverse health effects in occupationally exposed individuals. The study included 33 workers externally exposed to gamma radiation from the nuclear industry with cumulated doses from 0.11 to 190 mSv and 42 non-exposed controls of comparable age and socio-economic status. IL-6, IL-8, MCP-1, TNFalpha and IL-10 were analyzed by enzyme-linked assay (ELISA) in blood plasma samples. Total antioxidant status (TAS) of blood plasma was determined by a colorimetric assay. The radiation-exposed and control groups measured significantly different levels of MCP-1, TNFalpha and IL-10. Seventy-five percent of radiation workers had either high MCP-1 levels or low IL-10 levels and 30% had all three cytokines dysregulated. Approximately 50% of workers showed upregulated antioxidant status, which appeared to compensate the pro-inflammatory cytokine shift in these individuals. In contrast, only 2% of the control subjects were found to have three dysregulated cytokines, and all of them measured within the normal TAS range. The present study may represent an important step towards the establishment of a reliable set of biomarkers for health-risk estimation in population cohorts exposed to low radiation doses. CI - (c) The Author(s) 2019. Published by Oxford University Press on behalf of The Japan Radiation Research Society and Japanese Society for Radiation Oncology. FAU - Aneva, Nevena AU - Aneva N AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. FAU - Zaharieva, Elena AU - Zaharieva E AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. FAU - Katsarska, Olya AU - Katsarska O AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. FAU - Savova, Gergana AU - Savova G AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. FAU - Stankova, Katia AU - Stankova K AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. FAU - Djounova, Jana AU - Djounova J AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. FAU - Boteva, Rayna AU - Boteva R AD - National Center of Radiobiology and Radiation Protection (NCRRP), 1606 Sofia, Bulgaria. LA - eng PT - Journal Article PL - England TA - J Radiat Res JT - Journal of radiation research JID - 0376611 RN - 0 (Antioxidants) RN - 0 (Cytokines) SB - IM EIN - J Radiat Res. 2020 Jan 23;61(1):169. PMID: 31748796 MH - Adult MH - Antioxidants/metabolism MH - Case-Control Studies MH - Cytokines/blood MH - Dose-Response Relationship, Radiation MH - *Gamma Rays MH - Humans MH - Hypertension/blood MH - Inflammation/*pathology MH - Linear Models MH - Male MH - Middle Aged MH - *Nuclear Power Plants MH - Occupational Exposure/*analysis MH - Radiation Exposure/*analysis PMC - PMC7268544 OTO - NOTNLM OT - NOD-like receptor protein 4 OT - biomarkers OT - chronic radiation exposure OT - inflammatory cytokines OT - low-dose radiation OT - nuclear workers OT - occupational exposure EDAT- 2019/10/31 06:00 MHDA- 2020/04/24 06:00 PMCR- 2019/10/28 CRDT- 2019/10/31 06:00 PHST- 2019/04/06 00:00 [received] PHST- 2019/06/10 00:00 [revised] PHST- 2019/08/02 00:00 [accepted] PHST- 2019/10/31 06:00 [pubmed] PHST- 2020/04/24 06:00 [medline] PHST- 2019/10/31 06:00 [entrez] PHST- 2019/10/28 00:00 [pmc-release] AID - 5607839 [pii] AID - rrz059 [pii] AID - 10.1093/jrr/rrz059 [doi] PST - ppublish SO - J Radiat Res. 2019 Nov 22;60(6):768-779. doi: 10.1093/jrr/rrz059.