Singh Sarika, Mani Kumar Vyonkesh, Kapoor Neeru
Defence Institute of Physiology & Allied Science, Occupational Health , Delhi , India.
Int J Radiat Biol. 2015 May;91(5):426-34. doi: 10.3109/09553002.2015.1004466. Epub 2015 Feb 9.
To delineate the effect of chronic electromagnetic field (EMF) exposure from radar on plasma melatonin and serotonin levels in occupationally exposed military personnel.
A total of 166 male military personnel participated in the study out of which only 155 joined for blood draw. They were divided into three sets: Control group (n = 68), exposure group I (n = 40) exposed to 8-12 GHz and exposure group II (n = 58) working with radar at 12.5-18 GHz frequency. The three groups were further split into two groups according to their years of service (up to 10 years and > 10 years) in order to investigate the effect of years of exposure from radar. Melatonin and serotonin levels were estimated by enzyme immunoassay in fasting blood samples collected from 06:00-07:00 h. EMF measurements were recorded at different locations using Satimo EME Guard 'Personal Exposure Meter' and Narda 'Broad Band Field Meter'.
The group I exposed population registered a minor though not significant decrease in plasma melatonin concentration while the other group II exposed population registered statistically significant decline in melatonin concentration when compared with controls. Highly significant increase in plasma serotonin levels was found in exposure group II when compared to control whereas marginal non-significant rise was also registered in exposure group I in comparison to control. Exposure in terms of length of service up to 10 years did not produce any significant effect in the indoleamine levels in both the exposure groups when they were compared with their respective control groups. Whereas, length of service greater than 10 years was observed to decrease and increase respectively the melatonin and serotonin concentration significantly in exposure group II but not in exposure group I. However, correlation test did not yield any significant association between years of service and melatonin or serotonin levels respectively in both the exposure sets I and II. No significant association was observed between melatonin and serotonin levels as well.
The study showed the EMF ability to influence plasma melatonin and serotonin concentration in radar workers, significantly in 12.5-18 GHz range with service period greater than 10 years.
探讨雷达产生的慢性电磁场（EMF）暴露对职业暴露军人血浆褪黑素和血清素水平的影响。
共有166名男性军人参与研究，其中仅155人参与采血。他们被分为三组：对照组（n = 68）、暴露于8 - 12 GHz的暴露组I（n = 40）和工作于12.5 - 18 GHz频率雷达的暴露组II（n = 58）。为研究雷达暴露年限的影响，这三组又根据服役年限（10年及以下和超过10年）进一步分为两组。在06:00 - 07:00采集的空腹血样中，采用酶免疫分析法测定褪黑素和血清素水平。使用Satimo EME Guard“个人暴露计”和Narda“宽带场强计”在不同位置记录EMF测量值。
与对照组相比，暴露组I人群的血浆褪黑素浓度有轻微但不显著的下降，而暴露组II人群的褪黑素浓度有统计学意义的显著下降。与对照组相比，暴露组II的血浆血清素水平有高度显著的升高，而暴露组I与对照组相比也有轻微的不显著升高。与各自对照组相比，暴露组中服役年限达10年及以下的人员，其吲哚胺水平未产生任何显著影响。然而，在暴露组II中，服役年限超过10年分别使褪黑素和血清素浓度显著降低和升高，但在暴露组I中未出现这种情况。不过，相关性检验未在暴露组I和II中分别得出服役年限与褪黑素或血清素水平之间的任何显著关联。褪黑素和血清素水平之间也未观察到显著关联。
该研究表明，电磁场有影响雷达工作者血浆褪黑素和血清素浓度的能力，在12.5 - 18 GHz范围内且服役期超过10年时影响显著。
Zotero 插件