Effects of the hottest 500 kV UHV power frequency

Effects of 500 kV UHV power frequency electric field on human immune function

effects of 500 kV UHV power frequency electric field on human immune function

Abstract: serum IgG, IgA, IgM, C3, C4, CRP, CIC were quantitatively detected in operators under 500 kV UHV power frequency electric field to explore the biological effects of power frequency electric field on human body. The results showed that the contents of IgG, IgA and IgM decreased significantly compared with the control group (P 0.01), and the degree of decline had nothing to do with the length of service under high pressure. It is pointed out that the decrease of immunoglobulin is the biological effect of power frequency field strength on human immune organs or sensitive immune active cells, which makes it possible for B lymphocytes that produce antibodies to apoptosis prematurely or in advance. Therefore, improving immune function, enhancing the anti radiation ability of the body and delaying the time of cell apoptosis will become an important part of anti fatigue

key words: power frequency field strength; Immune function

with the development of industry and the continuous progress of technology, the demand for electric energy is increasing. In order to improve the stability of AC and improve the long-distance capacitance, 500kV transmission lines and substations, the highest level power facilities in China, have been built and put into use. In order to protect the environment and the health of workers, domestic and foreign scholars have conducted clinical blood cell, biochemical, electrolyte and other studies on the relationship between different levels of electromagnetic fields and human health. However, there are few reports on the investigation of immunity level of high-voltage employees, especially those working under 500kV ultra-high voltage electric field (field strength is 20~58kv/m). Therefore, we have carried out a number of immune indicators for line patrol workers, maintenance workers and operation workers under 500kV power frequency electric field in Datong, Shanxi. 2. The use of plastic instead of steel as household appliance materials, including the quantification of IgG, IgA, IgM, C3, C4, CRP and CIC. To explore the effect of power frequency field strength on the immune function of workers

materials and methods

1 Test object

experimental group: 104 staff (line patrol workers, maintenance workers and operation workers) under 500kV power frequency electric field, aged 20-57 years, with high-voltage service of 3-28 years. Control group: 60 employees in non high pressure work areas and administrative personnel working in offices

2. Detection methods IgG, IgA, IgM, C3, C4, CRP quantitative, using the immunochemical system ICs produced by Beckman company in the United States to detect, CIC quantitative using PEG UV quantitative method to detect the performance of car seat torsion spring

results

(I) the contents of IgG, IgA and IgM in the experimental group were significantly lower than those in the control group (P 0.01, see Table 1)

Table 1 quantitative comparison of immunoglobulin [x ± s] (g/l)

group

number of cases

note: compared with the control group, P 0.01

(II) complement and immunopathological parameters complement includes C3, C4 quantitative, immunopathological parameters include CRP, CIC Xuanyi. There is no significant difference between the results and the control group (P 0.05, see Table 2)

Table 2 Comparison of complement and immunopathological parameters

(III) the relationship between the content of immunoglobulin and complement and the length of high-pressure service. The experimental group was divided into 14 cases with a length of service of less than 5 years, 32 cases with a length of service of 6-10 years, 44 cases with a length of service of 11-15 years, and 14 cases with a length of service of more than 16 years. The contents of immunoglobulin and complement were analyzed and compared with the control group respectively. The results showed that there was no statistical difference between the age groups. However, the contents of globulin and C3 in each group were significantly lower than those in the control group (P 0.01 or P 0.05, see Table 3)

Table 3 immunoglobulin and complement content [x ± s (g/l) the energy used accounts for about 12% of the total energy consumption of the national economy] Relationship with high-pressure length of service

high-pressure length of service

number of cases

IgG

IgA

IgM

C3

C4

years 6~10

years 11~15

years 16

years control group

14

32

44

14

60

9.60

± 1.48**9.87

± 1.76** 9.69

± 1.52**10.01

± 1.7611.01

± 1.891.72

± 0.461.63

± 0.40**1.76

± 0.47**1.48

± 0.29**2.09

± 0 561.11

±0.21**1.12

±0.23**1.08

±0.20**1.17

±0.19**