Impact de la pollution atmosphérique urbaine sur les paramètres biologiques et la fonction respiratoire chez les mécaniciens à Brazzaville

Bopaka, R.G.; Diambalou, R.C. Diakouka; Okombi, F.H. Okemba; Bemba, E.L.P.; Abacka, K.B. Ossale; Koumeka, P.P.; Abena, A. A.

doi:10.1016/j.rmra.2020.11.326

Cited by 3 publications

(4 citation statements)

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“…The concentrations of CO, CO 2 , and NO 2 obtained in this study could be justified by the fact that our country, Congo, is experiencing strong growth in the automobile fleet (especially with regard to four-wheeled vehicles), due to the location of these garages, which are located on or near major roads, to the not very confined spaces of these garages, but also to the quality of the vehicles, which sometimes lack maintenance, and also to the poor quality of the fuel. These results are in agreement with those found by Bopaka et al, where the concentrations of automobile pollutants were higher than WHO standards in different automobile garages in Brazzaville [2].…”

Section: Discussionsupporting

confidence: 93%

“…This disease burden falls mainly on low-and middle-income countries [1]. Acute and chronic exposure to air pollution has been associated with a wide range of non-communicable diseases, such as respiratory pathologies [2] [3] and cardiovascular diseases, including myocardial infarction, heart failure, hypertension, and stroke [4] [5] [6]. At the same time, epidemiological studies have described the involvement of air pollution in neurodevelopmental disorders and neurodegenerative diseases such as Parkinson's disease and Alzheimer's disease [7], as well as in bladder and breast cancers [8] [9].…”

Section: Introductionmentioning

confidence: 99%

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Exposure to Automobile Pollutants and Sperm Quality among Mechanics in Brazzaville (Congo)

Diambalou,

Dzamba,

Kaya-Ongoto

et al. 2023

OJAP

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Atmospheric pollution is today at the heart of all debates because of its potentially harmful effects on the environment, the climate, and human health; it currently constitutes a real public health problem. However, the increase in infertility around the world has led scientists to look for a link between air pollution and fertility. This study consisted of evaluating the short-term influence of automobile pollution on the semen parameters of mechanics in Brazzaville. A cross-sectional, analytical, prospective study between two groups (G1, exposed people and G2, unexposed people) was carried out in Brazzaville on 228 patients, i.e., G1 with 76 subjects and G2 with 152 subjects, between June 2020 and September 2022, a period of 27 months, in order to evaluate, on the one hand, the quality of sperm in men exposed to automobile pollution according to WHO recommendations and, on the other hand, the quality of the air by a colorimetric method, punctual on a Dräger tube coupled with a Dräger Accuro pump. The concentrations of automotive pollutants measured (CO, CO 2 , NO 2 , SO 2 ) during this study were all above the 2021 air quality standards required by WHO. These results made it possible to establish a statistically significant link between air pollution and abnormal spermogram parameters, notably mobility, count, and morphology for the spermocytogram. Exposures to automobile pollutants can influence sperm quality, which is consistent with the results of our study. We observed an alteration in the morphology, mobility, and concentration of spermatozoa.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Exposure to Automobile Pollutants and Sperm Quality among Mechanics in Brazzaville (Congo)

Diambalou,

Dzamba,

Kaya-Ongoto

et al. 2023

OJAP

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“…Another study showed that there was a relationship between the duration of exposure to ambient air pollution and the level of oxygen saturation in the blood [14]. In addition, oximetry performed on mechanics exposed to ambient air pollution in the city of Brazzaville revealed a decrease in oxygen saturation of 27.3% [15].…”

Section: Introductionmentioning

confidence: 99%

Automobile Pollution and Risk of Impaired Lung Function and Oxygen Saturation among Vendors Near Road Traffic in Brazzaville, Congo

Nsompi¹,

Bouhika²,

Kounga³

et al. 2023

ODEM

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Context: Automobile pollution is becoming a potential threat to the cardiorespiratory health of the urban population of sub-Saharan Africa. The present study aims to evaluate the level of concentrations of fine particles (PM2.5 and PM10) near road traffic and the effects of exposure to automobile pollutants on pulmonary function and arteriolar blood oxygen saturation among sellers around road traffic. Materials and Methods: The study recruited 48 healthy people carrying out a sales activity near road traffic. PM2.5 and PM10 measurements were taken from 6 a.m. to 6 p.m. using a Temtop Airing-1000 portable particle detector. Spirometric measurements were taken in the morning and in the evening from a portable Spirobank G spirometer. Oxygen saturation measurements were also taken in the morning and evening using a Pulse oxymeter CMS50D pulse oxymeter. Results: Mean values of forced vital capacity (FVC), forced expiratory volume in one second (FEV1), peak expiratory flow (PEF), and forced expiratory flow between 25% and 75% of forced vital capacity (FEF25 -75) recorded in the evening were significantly lower than those obtained in the morning in the subjects of the total group and in the men. Only the mean values of PEF and FEF25 -75 obtained in the evening were significantly lower than those recorded in the morning in women. Minimum PM2.5 values recorded near road traffic were negatively correlated with evening PEF in men, while maximum PM10 values were negatively correlated with evening PEF in women. The blood oxygen saturation recorded in the evening How to cite this paper:

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“…This disease burden falls mainly on low-and middle-income countries [1]. Several epidemiological, clinical, and toxicological studies have shown an association between the appearance of non-communicable diseases and short-or long-term exposure to air pollution [2]. So-called air pollution has been associated with respiratory and cardiovascular pathologies, including myocardial infarction, heart failure, high blood pressure, and strokes [3] [4] [5].…”

Section: Introductionmentioning

confidence: 99%

Air Pollution and Sex Hormone Levels among Mechanics in Brazzaville (Republic of Congo)

Diakouka Diambalou,

M’sengui Dzamba,

Kaya-Ongoto

et al. 2023

JEP

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Air pollution is today a real concern across the world, responsible for around 7 million deaths per year around the world. It is currently involved in the appearance and worsening of several non-transmissible pathologies, making it an environmental, health, and societal problem. The objective of this work was to evaluate the effects of short-term exposure to air pollution on the level of sex hormones in mechanics. We conducted a cross-sectional, analytical, prospective case-control study in Brazzaville on 228 patients (76 cases and 152 controls) from June 2020 to December 2022, a period of 30 months. This study made it possible to evaluate, on the one hand, the level of sexual hormones in men exposed to automobile pollution according to the automated method (ELFA) on mini vidas and, on the other hand, the quality of the air by a colorimetric, punctual method on a Dräger tube coupled with a Dräger accuro pump. The results obtained made it possible to establish a statistically significant link between automobile pollutants (CO, CO 2 , NO 2 , SO 2 ) and the increase in LH and FSH on the one hand and the decrease in testosterone on the other hand. We also noted that the concentrations of automotive pollutants during this study were all above the standards required by the WHO. Exposure to automobile pollutants affects the hypothalamic-pituitary axis and therefore disrupts the level of sex hormones.

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Impact de la pollution atmosphérique urbaine sur les paramètres biologiques et la fonction respiratoire chez les mécaniciens à Brazzaville

Cited by 3 publications

References 1 publication

Exposure to Automobile Pollutants and Sperm Quality among Mechanics in Brazzaville (Congo)

Exposure to Automobile Pollutants and Sperm Quality among Mechanics in Brazzaville (Congo)

Automobile Pollution and Risk of Impaired Lung Function and Oxygen Saturation among Vendors Near Road Traffic in Brazzaville, Congo

Air Pollution and Sex Hormone Levels among Mechanics in Brazzaville (Republic of Congo)

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