Search

Researchers from the University of the Sciences conducted a study on air quality in Ho Chi Minh City, Vietnam, focusing on PM2.5-bound polycyclic aromatic hydrocarbons (PAHs). The study found that five- and six-ring PAHs were predominant in PM2.5, with Benzo(g,h,i)perylene and indeno(1,2,3-cd)pyrene being the dominant species. Vehicular emissions were identified as the major local source of PM2.5-bound PAHs in urban HCMC, with regional sources also contributing significantly. The research concluded that PM2.5-bound BaPTEQ accumulates in the alveolar tissues of the human respiratory system, highlighting potential health risks associated with exposure. [Extracted from the article] more...

Researchers from Shengjing Hospital of China Medical University conducted a cohort study on the association between prenatal exposure to polycyclic aromatic hydrocarbons (PAHs) and blood pressure in children aged 4-6 years. The study included 5642 children whose mothers provided urine samples in the third trimester, which were analyzed for PAH metabolites. The findings suggest that prenatal exposure to specific PAH metabolites is linked to blood pressure parameters in children, providing insights into potential long-term health impacts on childhood cardiovascular health. The research utilized multivariable regression models, quantile g-computation, and Bayesian kernel machine regression to explore these associations. [Extracted from the article] more...

A recent study conducted by Zhejiang University School of Medicine explored the association between urinary metabolites of polycyclic aromatic hydrocarbons (PAHs) and urinary incontinence (UI) in adults. The study, which analyzed data from the National Health and Nutrition Examination Survey (NHANES) from 2005-2016, found that certain PAH metabolites were positively related to stress UI (SUI) and overall UI prevalence in women. The research concluded that exposure to PAH mixtures, particularly 2-hydroxyfluorene (2-FLU), was significantly associated with SUI in adult women. [Extracted from the article] more...

A recent study conducted in Changchun City, Northeast China, focused on the presence of polycyclic aromatic hydrocarbons (PAHs) in road dust, particularly examining the impact of coal burning on their emission. The study found that PAH levels in road dust samples were lower than in cities worldwide, with adults facing potential cancer risks at 97.7% of sampling sites and children at 48.8%. The research identified five potential sources of PAHs in road dust, including petroleum, coal burning, biomass burning, fossil fuel burning, and transportation. Further investigations are needed to determine the carcinogenic risks associated with PAHs in the total environment. [Extracted from the article] more...

Researchers at Zunyi Medical University in China have discovered that Trilobatin, a natural food additive, shows promise in alleviating ulcerative colitis (UC) by reducing inflammation. The study used a mouse model to demonstrate that Trilobatin improves UC symptoms by modulating the gut microbiota, enhancing tryptophan metabolism, and activating the aromatic hydrocarbon receptor (AhR). These findings offer a novel therapeutic approach for treating UC by targeting the gut microbiota and metabolic pathways. [Extracted from the article] more...

A study conducted by Carleton University in Ottawa, Canada, focused on the indoor environmental quality and respiratory health of children in remote First Nations communities in Northwestern Ontario. The research found that high levels of polycyclic aromatic hydrocarbons (PAHs) from environmental tobacco smoke and wood stoves were present in settled house dust, potentially impacting the respiratory health of children. The study recommended limiting tobacco smoking indoors and upgrading to low emission airtight wood stoves to improve indoor air quality and children's respiratory health in the region. [Extracted from the article] more...

A recent study conducted by Nanjing Medical University in Jiangsu, People's Republic of China, focused on the environmental persistence and human health risks associated with Polycyclic Aromatic Hydrocarbons (PAHs). PAHs are organic compounds formed during the incomplete combustion of materials like coal, oil, and biomass, and are known for their genotoxic, mutagenic, and carcinogenic properties. The study highlighted the various exposure pathways of PAHs and their toxicological effects on human systems, emphasizing the need for further research to understand the specific mechanisms by which PAHs impact human health. This research underscores the importance of addressing the challenges posed by PAH pollution to mitigate potential health risks. [Extracted from the article] more...

Researchers at Hamadan University of Medical Sciences conducted a study on the impact of Zataria multiflora essential oil, saffron infusion, and fat content on the formation of polycyclic aromatic hydrocarbons (PAH4) in Kebab Koobideh. The study found that these variables significantly influenced the formation of PAH4, with Zataria multiflora essential oil inhibiting their production. A sample meeting desired specifications was prepared, showing minimal cancer risk and acceptable sensory attributes. The research concluded that integrating these variables can result in a sample with satisfactory organoleptic characteristics while reducing PAH concentration. [Extracted from the article] more...

Researchers from the University of Carthage in Bizerte, Tunisia, conducted a study on the date mussel Lithophaga lithophaga, a protected species that is illegally consumed due to high demand and prices. The study found high levels of polycyclic aromatic hydrocarbons (PAHs) in the mussels collected from areas with high fishery pressure, linked to port activity and the petroleum industry. The research highlights the health risks associated with consuming these mussels and aims to raise awareness to prevent consumer intoxication and illegal harvesting of the species. [Extracted from the article] more...

Researchers at Akenten Appiah-Menka University of Skills Training and Entrepreneurial Development conducted a study on the concentrations of polycyclic aromatic hydrocarbons (PAHs) in cattle and goat meats singed with different fuel sources in Ghana. The study found that meats singed with tyres had significantly higher PAH concentrations compared to those singed with firewood or LPG. The research highlighted potential health risks associated with consuming meats singed with tyres, emphasizing the need for regulatory measures and public awareness to mitigate PAH exposure. The findings were published in Environmental Health Insights and can be accessed for further information. [Extracted from the article] more...

Researchers from the Universidad de Leon analyzed the levels of polycyclic aromatic hydrocarbons (PAHs) in the traditional Spanish smoked sausage 'Botillo del Bierzo'. The study found that smoking the sausage for 24 hours did not significantly increase PAH levels, but the type of paprika used in production did impact PAH content. However, the contamination levels in 'Botillo del Bierzo' were found to be well below regulatory limits, posing no risk to consumer health. This research provides valuable insights into the influence of smoking and paprika spice on PAH content in this traditional Spanish food product. [Extracted from the article] more...

Researchers at the Ministry of Health & Welfare in Taiwan have developed an analytical method for determining and validating levels of Polycyclic Aromatic Hydrocarbons (PAH4) in katsuobushi, cocoa bean shells, and plant-based food supplements using gas chromatography-tandem mass spectrometry. PAHs are environmental contaminants that can be found in food through various processing methods. The study aims to ensure food safety by establishing maximum levels for specific PAHs in different food products. This research was financially supported by the TFDA of the Ministry of Health and Welfare in Taiwan. [Extracted from the article] more...

A recent study conducted by the Institute for Anthropological Research in Zagreb, Croatia, focused on the presence of Polycyclic Aromatic Hydrocarbons (PAH) in indoor and outdoor environments. The research found that PAH concentrations were higher outdoors compared to indoors, with traffic emissions, fossil fuel combustion, and residential heating being the main sources of PAHs. The study concluded that exposure levels to PAHs in both children and adults remained below the U.S. EPA's risk threshold, indicating limited carcinogenic risk under typical household conditions. The findings highlight the importance of effective air quality management strategies to address the transfer of pollutants from outdoor to indoor environments. [Extracted from the article] more...

A recent study conducted at the University of Colorado Anschutz Medical Campus explored the carcinogenic potential of non-genotoxic lower molecular weight polycyclic aromatic hydrocarbons (LMW PAHs) in combination with benzo[a]pyrene (B[a]P) on lung tumor promotion. The research found that LMW PAHs significantly increased the promotion and incidence of lung tumors when combined with B[a]P, indicating strong co-promotional activities. These findings suggest that LMW PAHs, commonly found in indoor and outdoor air pollution as well as secondhand cigarette smoke, may contribute to the cancer process and warrant further investigation into the carcinogenic risks associated with these compounds. [Extracted from the article] more...

Researchers from Zunyi Medical University in Guizhou, China, conducted a study on the effects of exposure to polycyclic aromatic hydrocarbons (PAHs) and phthalate acid esters (PAEs) during pregnancy on neonatal birth outcomes. The study found that maternal estradiol plays a mediating role in the effects of these chemicals on birth outcomes. The research suggests the importance of minimizing exposure to PAHs and PAEs before pregnancy and monitoring estradiol levels in early pregnancy. This peer-reviewed study utilized various models to analyze the relationship between chemical exposure and birth outcomes. [Extracted from the article] more...

A study conducted at Xiamen University in China explored the associations between folate biomarkers and exposure to polycyclic aromatic hydrocarbons (PAHs) in a population of 11,246 participants. The research found negative relationships between folate levels in red blood cells and urinary PAHs, with folate effectively mitigating adverse health outcomes caused by PAHs. The study concluded that while folate did not directly reduce mortality, it played a significant role in reducing the impact of PAH exposure on mortality rates. [Extracted from the article] more...

Researchers from Shaanxi Normal University in Xi'an, China, conducted a study on the effects of fructo-oligosaccharides (FOS) on ulcerative colitis. The study found that FOS alleviated colitis symptoms in mice by improving gut microbiota dysbiosis and modulating tryptophan metabolic pathways. This research highlights a novel mechanism of FOS in promoting the activation of the AhR/IL-22 axis to alleviate colitis. The study was funded by various organizations and has been peer-reviewed. [Extracted from the article] more...

A study conducted by the Chinese Academy of Sciences focused on the modeling of polycyclic aromatic hydrocarbons (PAHs) and their impact on human health, particularly in China. The research highlighted the global distribution of PAHs and changes in health risks from 2013 to 2018, emphasizing the need for additional control measures to reduce pollution and health risks effectively. The study also underscored the importance of considering changes in meteorological conditions when evaluating emission changes and their impact on PAH concentrations. [Extracted from the article] more...

Researchers from Istanbul University-Cerrahpasa conducted a study to determine the levels of 16 European priority polycyclic aromatic hydrocarbons (PAHs) in doner kebabs cooked using different heating sources. The study found that benzo[a]pyrene and PAH4 levels were significantly higher in chicken doner kebabs compared to meat doner kebabs, with the highest levels detected in charcoal-grilled samples. Cooking with an electric heating source resulted in fewer PAH compounds in the doner kebab samples, suggesting that reducing fat content, preventing fat contact with the heating source, and avoiding overcooking can help minimize PAH formation. [Extracted from the article] more...

A study conducted by researchers at Abdelmalek Essaadi University in Morocco focused on the concentration and distribution of polycyclic aromatic hydrocarbons (PAHs) and organic matter pollution in sediments from Al Hoceima Bay on the Mediterranean coast. The research found 18 types of PAHs with varying concentrations, indicating potential health risks, especially through dermal contact. The study suggests the need for continued monitoring to minimize human exposure to PAHs in the region. This information could serve as a reference for future investigations and policy-making regarding sediment-water quality and economic activities along the Moroccan Mediterranean coast. [Extracted from the article] more...

Researchers from the University of Miami conducted a study on the impact of environmental toxicants, specifically polycyclic aromatic hydrocarbons (PAHs), on the circadian regulation and function of brain endothelial cells that form the blood-brain barrier. The study found that exposure to PAHs led to alterations in the expression of critical circadian modulators and tight junction genes in brain endothelial cells. These findings contribute to understanding the health effects of PAH-induced circadian rhythm disruption. The research was supported by grants from the University of Miami U-LINK Resilience Challenge and the National Institutes of Health (NIH) in the USA. [Extracted from the article] more...

A recent report from Cincinnati Children's Hospital Medical Center discusses the adverse reproductive outcomes in women due to exposure to Polycyclic Aromatic Hydrocarbons (PAHs). The study highlights the link between PAH exposure and conditions such as polycystic ovary syndrome (PCOS) and premature ovarian failure (POF), as well as reproductive hormone imbalances. The research emphasizes the need for further studies to understand the mechanisms by which PAHs impact women's reproductive health and suggests targeting modifiable sources of exposure, such as tobacco smoke, in future policies and interventions. [Extracted from the article] more...

A recent study conducted at the State University of Campinas in Brazil developed a method for analyzing polycyclic aromatic hydrocarbons (PAHs) in acai-based food products using vacuum-assisted sorbent extraction (VASE) and gas chromatography-mass spectrometry (GC-MS). The method, which is solvent-free and can be fully automated, was found to have good precision and green analytical characteristics. The research found that no PAHs were detected above the limits of detection in thirty samples of acai-based food products. Financial support for the study was provided by Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) and NSF - Directorate for Mathematical & Physical Sciences (MPS). [Extracted from the article] more...

A recent study conducted at Kwame Nkrumah University of Science and Technology in Kumasi, Ghana, analyzed the presence of polycyclic aromatic hydrocarbons (PAHs) in smoked bushmeat products. The research identified 16 PAH congeners, with some concentrations exceeding European Union limits. The study concluded that the high levels of PAHs in smoked bushmeat products pose a public health concern due to their potential carcinogenicity upon consumption. For more information, readers can refer to the International Journal of Food Science. [Extracted from the article] more...

A study conducted at Prince of Songkla University in Thailand developed a porous magnetic composite adsorbent for extracting polycyclic aromatic hydrocarbons (PAHs) from food samples like coffee, cocoa, and tea. The method involved using a metal-organic framework (MOF) and magnetite nanoparticles to improve extraction efficiency. The research concluded that there was no cancer risk to consumers from the intake of these food items. The study was funded by various organizations and has been peer-reviewed for accuracy. [Extracted from the article] more...

A study conducted by researchers at Mashhad University of Medical Sciences in Iran analyzed the levels of pesticides, metals, and polycyclic aromatic hydrocarbons (PAHs) in fig fruits to assess potential health risks for consumers. The findings indicated that the contaminants present in figs cultivated in Iran posed minimal health risks, with hazard quotients (HQs) for pesticide residues being less than 1.0. The study concluded that the consumption of figs from Iran does not pose a significant health risk to consumers. [Extracted from the article] more...

A recent study conducted by researchers at Xi'an University of Architecture and Technology in China analyzed the distribution, sources, and risk assessment of polycyclic aromatic hydrocarbons (PAHs) in river sediments near a coal industrial zone. The study found that PAH concentrations in the area posed potential ecological risks due to complex sources, including local fossil fuel combustion and traffic exhaust. The research highlighted the need for environmental remediation measures to mitigate moderate to high potential cancer risks and ecological impacts. This study provides valuable insights for pollution prevention and ecological restoration strategies in resource-rich river areas. [Extracted from the article] more...

A recent study conducted at Ahvaz Jundishapur University of Medical Sciences in Iran examined the relationship between occupational exposure to Polycyclic Aromatic Hydrocarbons (PAHs) and urinary metabolite levels in built-up roofing workers. The study found that workers had noticeable exposure to PAHs, although below allowable limits, and recommended the use of personal protective equipment to mitigate risks. The research highlights the importance of addressing chemical exposure in the workplace to protect workers' health. [Extracted from the article] more...

Researchers from the First Affiliated Hospital of Anhui Medical University conducted a study on the effects of single and combined exposure to urinary polycyclic aromatic hydrocarbons (PAHs) on lung function in the U.S. adult population. The study analyzed data from 4040 adults and found negative associations between individual PAH metabolites and lung function, with combined exposure to multiple PAH metabolites leading to decreased lung function. The research suggests further investigation is needed to understand the mechanisms underlying these associations and improve exposure assessment. For more information, the study "Effects of single and combined urinary polycyclic aromatic hydrocarbon effects on lung function in the U.S. adult population" can be accessed in BMC Public Health. [Extracted from the article] more...

A recent study from China Medical University explored the inhibitory effects of fruit powders on the formation of polycyclic aromatic hydrocarbons (PAHs) in charcoal-grilled pork. The research found that guava powder exhibited the highest phenolic content and antioxidant activity, leading to a significant reduction in PAH formation in grilled meats. Incorporating fruit powders in marination did not affect the sensory attributes of the meat and could potentially reduce health risks associated with consuming grilled meats. This study offers a promising strategy for inhibiting PAH formation in meat during charcoal grilling while maintaining sensory qualities. [Extracted from the article] more...

Researchers at Maejo University conducted a study on the toxic effects of polycyclic aromatic hydrocarbons (PAHs) on a co-culture model of human alveolar epithelial cells (A549) and macrophages (THP-1). The study found that exposure to PAHs led to decreased cell viability, increased micronucleus formation, and altered cytokine secretion, indicating genotoxic and pro-inflammatory effects. The research suggests that PAHs may have adverse effects on human health when inhaled, highlighting the importance of understanding the impact of environmental contaminants on respiratory health. [Extracted from the article] more...

A recent study conducted by the University of Chinese Academy of Sciences has shed light on the risks associated with compound pollution in agricultural ecosystems. The researchers used bivariate local indicators of spatial association (LISA) to analyze the spatial interaction between heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in farmland soils in Hezhang County, China. The study found distinct clusters of elevated concentrations of both HMs and PAHs in areas affected by long-standing lead-zinc mining and smelting activities. The research also identified the southwest of Hezhang as a critical hotspot for combined pollution risks. The study highlights the importance of bivariate LISA in identifying regions with heightened human health and ecological risks in rural settings. [Extracted from the article] more...

A recent study conducted by researchers at the University of Rennes in France explores the use of extracellular vesicles (EVs) and their microRNA (miRNA) contents as potential biomarkers for exposure to polycyclic aromatic hydrocarbons (PAHs), a common environmental contaminant. The study found that exposure to benzo(a)pyrene (B(a)P), a type of PAH, led to increased production of EVs and changes in the expression of miR-342-3p in both in vitro and in vivo experiments. These findings suggest that EVs and their miRNA contents could be used as biomarkers for PAH exposure and have potential applications in environmental toxicology. The study was funded by various organizations including the French Ministry of Higher Education and Research and the National Agency for Food, Environmental, and Occupational Health and Safety. [Extracted from the article] more...

A recent study conducted by Zahedan University of Medical Sciences in Iran examined the presence of polycyclic aromatic hydrocarbons (PAHs) in the indoor air of coffee shops. PAHs are a class of hydrocarbons that are known to be carcinogenic. The study found that the average concentrations of particulate-bound PAHs and gaseous PAHs in the air of coffee shops were 13,411.86 ng/m³ and 6,432.76 ng/m³, respectively. The primary sources of PAHs in coffee shops were identified as fossil fuel combustion and environmental tobacco smoke. The study also calculated the lifetime cancer risk of inhaling PAHs and found it to be significant. The researchers concluded that measures should be taken to reduce PAHs exposure in public spaces through health warning labels and regulated indoor smoking policies. [Extracted from the article] more...

A new report from Mashhad University of Medical Sciences presents fresh data on aromatic hydrocarbons, specifically focusing on their presence in bread and the potential health risks they pose to consumers. The study conducted a systematic review and meta-analysis of 34 articles, analyzing data from 1057 bread samples. The research found that a significant percentage of the bread samples exceeded permissible limits for certain aromatic hydrocarbons, and consumers in various countries were exposed to moderate or high levels of carcinogenicity. The study concludes that stringent regulations and monitoring are necessary to reduce contamination, and further research is needed to develop safe processing methods to remove aromatic hydrocarbons from bread. [Extracted from the article] more...

A new study conducted at the University of California Los Angeles (UCLA) has examined the relative binding affinity of several covalent polycyclic aromatic hydrocarbon (PAH)-DNA adducts at a mutational hotspot implicated in cancer risk. The study found that certain PAHs have greater binding affinity than the known carcinogen benzo[a]pyrene (B[a]P), and these PAH-DNA adducts may resist repair mechanisms, contributing to their genotoxic potential. The research suggests that the study of PAH genotoxicity needs to be expanded, with implications for public policy and the health sciences. The study's findings can be applied to assess the genotoxicity of other unclassified compounds. [Extracted from the article] more...

A recent study conducted by researchers at Chiang Mai University in Thailand explored the potential of coffee cherry pulp extract in combating the harmful effects of polycyclic aromatic hydrocarbons (PAHs) found in air pollution. The extract, which contains chlorogenic acid, caffeine, and theophylline, demonstrated strong antioxidant properties and effectively inhibited inflammation and oxidative stress in macrophage cells exposed to PAHs. The researchers concluded that coffee cherry pulp extract has the potential to be used as a safe and effective ingredient in cosmeceuticals for treating inflammatory skin diseases caused by air pollution. [Extracted from the article] more...

A recent study conducted by researchers at the University of Gothenburg in Sweden evaluated a self-monitoring protocol for assessing soot and polycyclic aromatic hydrocarbon (PAH) exposure among chimney sweeps. The study involved 20 chimney sweeps who followed a self-monitoring protocol for 8 consecutive workdays. The protocol included real-time air monitoring, a work diary, and the collection of urine samples. The researchers found that the self-monitored protocol was a valuable and valid method for collecting larger numbers of samples, especially in occupations where employees work independently and exposure is difficult to monitor using traditional methods. This study provides insights into improving occupational exposure assessment methods. [Extracted from the article] more...