Occupational noise exposure, social class, and risk of ischemic heart disease and all-cause mortality – a 16-year follow-up in the Copenhagen Male Study

Suadicani, Poul; Hein, Hans Ole; Gyntelberg, Finn

doi:10.5271/sjweh.3200

Cited by 24 publications

(32 citation statements)

References 13 publications

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“…The HR for IHD mortality in the study of Suadicani et al . [43] was elevated only among participants from the lower social class (599 exposed, 8.4% cases vs 853 controls, 7.0% cases) (HR=1.13, 95% CI: 0.75, 1.68). Finally, McNamee et al .…”

Section: Resultsmentioning

confidence: 99%

“…Noise exposure was also derived via methods independent of participants’ perception, except for Suadicani et al . [43] who used self-reported vocal effort.…”

Section: Resultsmentioning

confidence: 99%

“…However, three of the studies found elevated risk among some subgroup − for Davies et al . [24], it was workers exposed to higher noise levels or those exposed during their working years; for Suadicani et al .,[43] it was workers from the lower social classes; and for McNamee et al .,[25] elevated risk was found only in one of the recruitment sites where the validity of their noise indicator was higher.…”

Section: Discussionmentioning

confidence: 99%

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Occupational noise and ischemic heart disease: A systematic review

Dzhambov

Dimitrova

2016

Noise Health

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Noise exposure might be a risk factor for ischemic heart disease (IHD). Unlike residential exposure, however, evidence for occupational noise is limited. Given that high-quality quantitative synthesis of existing data is highly warranted for occupational safety and policy, we aimed at conducting a systematic review and meta-analysis of the risks of IHD morbidity and mortality because of occupational noise exposure. We carried out a systematic search in MEDLINE, EMBASE, and on the Internet since April 2, 2015, in English, Spanish, Russian, and Bulgarian. A quality-scoring checklist was developed a priori to assess different sources of methodological bias. A qualitative data synthesis was performed. Conservative assumptions were applied when appropriate. A meta-analysis was not feasible because of unresolvable methodological discrepancies between the studies. On the basis of five studies, there was some evidence to suggest higher risk of IHD among workers exposed to objectively assessed noise >75–80 dB for <20 years (supported by one high, one moderate, and one low quality study, opposed by one high and one moderate quality study). Three moderate and two low quality studies out of six found self-rated exposure to be associated with higher risk of IHD, and only one moderate quality study found no effect. Out of four studies, a higher mortality risk was suggested by one moderate quality study relying on self-rated exposure and one of high-quality study using objective exposure. Sensitivity analyses showed that at higher exposures and in some vulnerable subgroups, such as women, the adverse effects were considerably stronger. Despite methodological discrepancies and limitations of the included studies, occupational noise appeared to be a risk factor for IHD morbidity. Results suggested higher risk for IHD mortality only among vulnerable subgroups. Workers exposed to high occupational noise should be considered at higher overall risk of IHD.

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Section: Resultsmentioning

confidence: 99%

“…Noise exposure was also derived via methods independent of participants’ perception, except for Suadicani et al . [43] who used self-reported vocal effort.…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Occupational noise and ischemic heart disease: A systematic review

Dzhambov

Dimitrova

2016

Noise Health

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“…Mitochondrial damage, leading to myocardial energy barrier, plus myofi lament fracture, will directly affect the cardiac systolic function. Other researchers [17] found that long-term exposure to occupational noise may be associated with an increased risk of ischemic heart disease and all-cause mortality.…”

Section: Discussionmentioning

confidence: 98%

Effects of high frequency noise on female rat′s multi-organ histology

Xue¹,

Zhang²,

Xiaokaiti·Yibulayin

et al. 2014

Noise Health

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To investigate the pathological damage of high-frequency stable noise exposure on the brain, heart, liver, and spleen of female rat's. Controlled animal intervention study. Twenty female Sprague-Dawley rats were randomly divided into experimental and control groups with 10 rats in each group. Rats in the experimental group were exposed to continuous high-frequency stable noise for 2 weeks (3 h/day)followed by the pathological damages in the rat's brain, heart, liver, and spleen were compared with those of the control group. After 2 weeks' continuous exposure to high-frequency stable noise, compared with the control group, the most prominent histopathologic changes in the brain tissue structures of the experimental group included loose disorder, hyperemia, edema, blood vessels expand, glial cell hyperplasia, mild atypia in some areas (hyperchromatic nuclei, irregular karyotype), and no degeneration and necrosis. There were dilatation and congestion of central vein, hepatic sinus, and interlobular veins of liver tissue. The structure of hepatic lobule was destroyed by inflammatory cell infiltration, as well as lymphoid nodule formation. There was hyperemia in spleen, but the structure was clear. There was extravasated blood, and the splenic sinuses were highly expanded by a blood clot. Hyperplasias of the lymphoid of white pulp were also active. There was dilation and congestion in myocardial interstitial vascular, and there was mild degeneration and hyperemia in myocardial cells. No hemorrhage and myocardial necrosis were observed. High-frequency stable noise can cause pathological damage in brain, liver, spleen, and heart tissues of female rat at a various degree.

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“…In our analysis of work-related acute myocardial infarction, we included the following risk factors: irregular working hours including shift work (abbreviated here to "shift work"), job strain, motor exhausts, combustion products and ETS. Also causes other than those mentioned above (eg, noise) are discussed as being work-related but the evidence for causality is limited (13). We considered that the factors we selected were somewhat more established as being work-related than noise, but our choice of factors was also influenced by the availability of good AF estimates for job strain, shift work, motor exhausts, combustion products, and ETS from a national study (14)(15)(16)(17).…”

Section: Methodsmentioning

confidence: 99%