Arrest in ciliated cell expansion on the bronchial lining of adult rats caused by chronic exposure to industrial noise

Oliveira, Maria João; Pereira, António Sousa; Ferreira, Paula; Guimarães, Laura; Freitas, Diamantino; Carvalho, António Oliveira de; Grande, Nuno; Águas, Artur P.

doi:10.1016/j.envres.2004.06.006

Cited by 9 publications

(8 citation statements)

References 13 publications

(17 reference statements)

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“…[3] This type of noise is an occupational hazard that is liable to affect the health of industrial textile-plant workers. In fact, we have documented that chronic exposure of rats to noise taped at an industrial cotton room induces alterations in their respiratory epithelium, [1,2] a finding that is consistent with the reported increase in respiratory infections [4] and decrease in respiratory function in textile workers. [4,5] In general, chronic exposure to excessive noise pollution may lead to a systemic disorder, the so-called vibroacoustic disease, in susceptible individuals.…”

Section: Introductionsupporting

confidence: 63%

“…Experimental studies have shown that rat tissues submitted to chronic noise undergo two major morphological changes: fibrosis of several viscera, such as lung [22] and stomach, [23] and of serous membranes, such as pleura [6] and pericardium; [24] as well as the alteration of cell membrane projections, such as cilia or microvilli. [1,2,25,28] We found here no evidence of fibrosis in the adrenal glands of rats submitted to textile noise. This may be due to the deep location of the adrenal glands that protects them from the vibration affecting the body surface of the rats.…”

Section: Discussionmentioning

confidence: 52%

“…Noise of high intensity and low frequency is an environmental aggression that is present in a number of industrial textile plants of our days, particularly in industrial plants containing heavy machinery that produce high levels of noise pollution, namely in cotton rooms of textile outfits [1,2] and in aeronautical industry. [3] This type of noise is an occupational hazard that is liable to affect the health of industrial textile-plant workers.…”

Section: Introductionmentioning

confidence: 99%

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Chronic exposure of rats to occupational textile noise causes cytological changes in adrenal cortex

Oliveira¹,

Monteiro²,

Ribeiro³

et al. 2009

Noise Health

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Chronic exposure to industrial noise and its effects on biological systems. Occupational exposure to noise may result in health disorders. Our aim was to evaluate the effects of chronic exposure to high-intensity noise of textile industry cotton rooms on the adrenal morphology. The environmental noise of a cotton-mill room from a large textile factory of Northern Portugal was recorded and reproduced by an adopted electroacoustic setup in a sound-insulated animal room where the rats were housed. The sounds were reproduced at the original levels of approximately 92 dB, which was achieved by equalization and distribution of sound output in the room. Wistar rats were submitted to noise exposure, in the same time schedule as employed in textile plants. After one, three, five, and seven months, the adrenals were collected and analyzed by light microscopy. Analyzed by multivariate analysis of variance and post hoc Bonferroni correction for multiple comparisons of the means between the groups. Noise exposure induced time-dependent changes in adrenal cortex, with decrease of zona fasciculata (ZF) and increase of zona reticularis volumes, together with a significant depletion of lipid droplet density in ZF cells of exposed rats, in comparison to control rats. Chronic exposure of rats to textile industry noise triggers cytological changes in the adrenals that suggest the existence of a sustained stress response.

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Section: Introductionsupporting

confidence: 63%

Section: Discussionmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Chronic exposure of rats to occupational textile noise causes cytological changes in adrenal cortex

Oliveira¹,

Monteiro²,

Ribeiro³

et al. 2009

Noise Health

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“…The environmental noise of a cotton-mill room from a large textile factory was used as the paradigm of the occupational noise. The noise present in this cotton mill room was recorded and reproduced according to the procedure used by Oliveira et al, 22 , 23 .…”

Section: Methodsmentioning

confidence: 99%

Industrial Noise and Tooth Wear - Experimental Study

Cavacas¹,

Tavares²,

Borrecho³

et al. 2015

Int. J. Med. Sci.

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Tooth wear is a complex multifactorial process that involves the loss of hard dental tissue. Parafunctional habits have been mentioned as a self-destructive process caused by stress, which results in hyperactivity of masticatory muscles. Stress manifests itself through teeth grinding, leading to progressive teeth wear. The effects of continuous exposure to industrial noise, a “stressor” agent, cannot be ignored and its effects on the teeth must be evaluated.Aims: The aim of this study was to ascertain the effects of industrial noise on dental wear over time, by identifying and quantifying crown area loss.Material and Methods: 39 Wistar rats were used. Thirty rats were divided in 3 experimental groups of 10 animals each. Animals were exposed to industrial noise, rich in LFN components, for 1, 4 and 7 months, with an average weekly exposure of 40 hours (8h/day, 5 days/week with the weekends in silence). The remaining 9 animals were kept in silence. The areas of the three main cusps of the molars were measured under light microscopy.Statistical analysis used: A two-way ANOVA model was applied at significance level of 5%.Results: The average area of the molar cusps was significantly different between exposed and non-exposed animals. The most remarkable differences occurred between month 1 and 4. The total crown loss from month 1 to month 7 was 17.3% in the control group, and 46.5% in the exposed group, and the differences between these variations were significant (p<0.001).Conclusions: Our data suggest that industrial noise is an important factor in the pathogenesis of tooth wear.

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“…[12] in the perivasculoductal connective tissue of the parotid gland, in which there is significant fibrosis and increase of collagen I and V in the connective tissue of the gland with exposure time, or to those reported by Fonseca et al ., that described fibrosis in the stomach and duodenum walls and the same behavior in collagens. [1016] Other organs such as vessels,[56] pericardium,[17] trachea,[18], or lungs,[19] have been shown to be affected by fibrosis when exposed. Ferreira et al .…”

Section: Discussionmentioning

confidence: 99%

Noise rich in low frequency components, a new comorbidity for periodontal disease? An experimental study

Mendes

Oliveira

Brito³

et al. 2014

J Indian Soc Periodontol

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Introduction:Exposure to noise rich in low frequency components induces abnormal proliferation of extracellular matrix and collagens. The previous studies have shown alterations in the periodontium of both humans and animals. Our objective was the evaluation of collagens I, IV and V of the periodontium of Wistar rats exposed to noise rich in low frequency components.Materials and Methods:5 groups (each with 10 animals) were exposed to continuous low frequency noise (LFN). The LFN, from previously recorded white noise, frequency filtered and amplified, was applied in growing periods of 1, 3, 5, 9 and 13 weeks, in order to characterize the alterations with exposure time. A control group of ten animals was kept in silence. These animals were used in groups of 2 as aged-matched controls. After exposure, sections were obtained including teeth, alveolar bone and periodontium and observed after immunollabeling for collagens I, IV and V.Results:A significant increase in collagen I was observed in exposed groups (P < 0.001) (Kruskal-Wallis test). Post-hoc comparisons (Mann-Whitney test with Bonferroni correction) showed an increase in collagen I in animals exposed for 3 weeks or more (P < 0.001). The same test was applied to collagen V where significant differences were found when comparing control and exposed groups (P ≤ 0.004). The t-test for independent samples was applied to collagen type IV where no significant differences were found (P = 0.410), when comparing to the control group.Discussion:As in other organs, we can observe fibrosis and the newly formed collagen is likely to be “nonfunctional”, which could have clinical impact.Conclusion:Noise may constitute a new comorbidity for periodontal disease.

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Arrest in ciliated cell expansion on the bronchial lining of adult rats caused by chronic exposure to industrial noise

Cited by 9 publications

References 13 publications

Chronic exposure of rats to occupational textile noise causes cytological changes in adrenal cortex

Chronic exposure of rats to occupational textile noise causes cytological changes in adrenal cortex

Industrial Noise and Tooth Wear - Experimental Study

Noise rich in low frequency components, a new comorbidity for periodontal disease? An experimental study

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