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"Viegas, Susana"
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Death Images in Michael Haneke’s Films
2024
Although meditating on death has long been a central philosophical practice and is gaining prominence in modern European public discourse, certain misconceptions still persist. The Austrian filmmaker Michael Haneke does not shy away from confronting real and performed images of death, combining a denouncing cinematic approach with no less polemic aesthetic and ethical theories. Certainly, visually shocking and disturbing films can, in their own way, challenge the boundaries of what is thinkable, at times even touching upon the unthinkable. Images of death and death-related themes are particularly pervasive in Haneke’s films. His films raise significant philosophical and ethical questions about mortality, violence, death, and ageing. This analysis is a tentative attempt to map how Haneke explores representations of death and dying in Benny’s Video (1992) and Funny Games (1997), with particular reference to the rewind gesture depicted in both films. In doing so, it aims to examine the conversation such films prompt between moving images and the audience.
Journal Article
Occupational Exposure to Bisphenol A (BPA): A Reality That Still Needs to Be Unveiled
by
Viegas, Susana
,
Ribeiro, Edna
,
Ladeira, Carina
in
Bisphenol A
,
bisphenol A (BPA)
,
Correlation analysis
2017
Bisphenol A (BPA), 2,2-bis(4-hydroxyphenyl) propane, is one of the most utilized industrial chemicals worldwide, with the ability to interfere with/or mimic estrogenic hormones with associated biological responses. Environmental human exposure to this endocrine disruptor, mostly through oral intake, is considered a generalized phenomenon, particularly in developed countries. However, in the context of occupational exposure, non-dietary exposure sources (e.g., air and contact) cannot be underestimated. Here, we performed a review of the literature on BPA occupational exposure and associated health effects. Relevantly, the authors only identified 19 studies from 2009 to 2017 that demonstrate that occupationally exposed individuals have significantly higher detected BPA levels than environmentally exposed populations and that the detection rate of serum BPA increases in relation to the time of exposure. However, only 12 studies performed in China have correlated potential health effects with detected BPA levels, and shown that BPA-exposed male workers are at greater risk of male sexual dysfunction across all domains of sexual function; also, endocrine disruption, alterations to epigenetic marks (DNA methylation) and epidemiological evidence have shown significant effects on the offspring of parents exposed to BPA during pregnancy. This overview raises awareness of the dramatic and consistent increase in the production and exposure of BPA and creates urgency to assess the actual exposure of workers to this xenoestrogen and to evaluate potential associated adverse health effects.
Journal Article
EDCs Mixtures: A Stealthy Hazard for Human Health?
by
Viegas, Susana
,
Ribeiro, Edna
,
Ladeira, Carina
in
Bioaccumulation
,
biomonitoring
,
Body burden
2017
Endocrine disrupting chemicals (EDCs) are exogenous chemicals that may occur naturally (e.g., phytoestrogens), while others are industrial substances and plasticizers commonly utilized worldwide to which human exposure, particularly at low-doses, is omnipresent, persistent and occurs in complex mixtures. EDCs can interfere with/or mimic estrogenic hormones and, consequently, can simultaneously trigger diverse signaling pathways which result in diverse and divergent biological responses. Additionally, EDCs can also bioaccumulate in lipid compartments of the organism forming a mixed “body burden” of contaminants. Although the independent action of chemicals has been considered the main principle in EDCs mixture toxicity, recent studies have demonstrated that numerous effects cannot be predicted when analyzing single compounds independently. Co-exposure to these agents, particularly in critical windows of exposure, may induce hazardous health effects potentially associated with a complex “body burden” of different origins. Here, we performed an exhaustive review of the available literature regarding EDCs mixtures exposure, toxicity mechanisms and effects, particularly at the most vulnerable human life stages. Although the assessment of potential risks to human health due to exposure to EDCs mixtures is a major topic for consumer safety, information regarding effective mixtures effects is still scarce.
Journal Article
Occupational Exposure to Mycotoxins-Different Sampling Strategies Telling a Common Story Regarding Occupational Studies Performed in Portugal (2012-2020)
2020
In occupational settings where exposure to organic dust occurs (e.g., intensive animal production, waste management, farming and many others) workers can also be exposed to mycotoxins. However, recognizing exposure to mycotoxins in workplace environments does not happen commonly and, consequently, remains as a not identified occupational risk factor. In the last decade, work developed in different occupational settings, using different sampling approaches reported that occupational exposure to mycotoxins occurs and it is of upmost importance to be seen as an occupational concern that needs to be tackled. This paper intends to discuss the several possibilities available for assessing and characterizing the occupational exposure to mycotoxins through the description of the advantages and limitations of the different sampling strategies. Overviewing the approaches and the main achievements used in several field campaigns developed in Portugal, the knowledge obtained will be used to support the identification of the main aspects to consider when designing new occupational studies. The need for additional research work will also be discussed where new directions to follow will be debated.
Journal Article
Mycotoxin Exposure and Related Diseases
2020
[...]every effort that contributes to properly characterizing the risk associated with human exposure assumes particular relevance. [...]the results suggest that the modified HSCAS adsorbent can be used against T-2 toxin-induced toxicity in growth performance, nutrient digestibility, and hepatic and small intestinal injuries in chicks [26]. Altogether, and especially under an expected climate change scenario, which considers mycotoxins as an important driver of health consequences, the present Special Issue contributes with significant and impactful research that supports the anticipation of potential consequences of the exposure of humans and animals to mycotoxins, future risk assessments, and the establishment of preventive measures. [...]the valuable contributions, organization, and editorial support of the MDPI management team and staff are greatly appreciated.
Journal Article
Sterigmatocystin in foodstuffs and feed: aspects to consider
by
Viegas, Susana
,
Piecková, Elena
,
Nurme, Janne
in
Agricultural ecosystems
,
agroecosystems
,
Building materials
2020
Sterigmatocystin (STC) is a possible human carcinogen (2B) according to International Agency for Research on Cancer classification and has been associated with immunotoxic and immunomodulatory activity, together with mutagenic effects. It might be found in numerous substrates, from foods and feeds to chronically damp building materials and indoor dust. Although European Food Safety Authority concluded that the exposure to STC to be of low concern for public health, reinforces the need of data concerning exposure of European citizens. Climate change can represent an increased risk of exposure to STC since it is a crucial factor for agro-ecosystem powering fungal colonisation and mycotoxin production This aspect can represent an increased risk for European countries with temperate climates and it was already reported by the scientific community.
Journal Article
Occupational Exposure to Mycotoxins in Swine Production: Environmental and Biological Monitoring Approaches
2019
Swine production workers are exposed simultaneously to multiple contaminants. Occupational exposure to aflatoxin B1 (AFB1) in Portuguese swine production farms has already been reported. However, besides AFB1, data regarding fungal contamination showed that exposure to other mycotoxins could be expected in this setting. The present study aimed to characterize the occupational exposure to multiple mycotoxins of swine production workers. To provide a broad view on the burden of contamination by mycotoxins and the workers’ exposure, biological (urine) samples from workers (n = 25) and 38 environmental samples (air samples, n = 23; litter samples, n = 5; feed samples, n = 10) were collected. The mycotoxins biomarkers detected in the urine samples of the workers group were the deoxynivalenol-glucuronic acid conjugate (60%), aflatoxin M1 (16%), enniatin B (4%), citrinin (8%), dihydrocitrinone (12%) and ochratoxin A (80%). Results of the control group followed the same pattern, but in general with a lower number of quantifiable results (
Journal Article
Electrostatic Dust Cloth: A Useful Passive Sampling Method When Assessing Exposure to Fungi Demonstrated in Studies Developed in Portugal (2018–2021)
2022
Electrostatic dust cloths (EDC) have been widely used for microbiologic contamination assessment in different indoor and occupational environments. This paper reviews sixteen studies performed in Portugal between 2018 and 2021 for evaluating the exposure to microbiological agents and focusing on fungi using EDC as a passive sampling method. The findings suggest that EDC can be applied as a screening method for particulate matter-exposure assessment and as a complementary method to characterize microbial exposures in occupational environments. Overall, EDC should be included, side by side with other sampling methods, in sampling campaigns focused on exposure assessments due to the advantages such as the straightforward extraction protocol favoring the employment of different assays, which allows us to assess exposure to a wide range of microbial agents, and presents higher accuracy regarding the fungal diversity.
Journal Article
Environmental and health databases used together for boosting a One Health approach
2024
Publicly available European environment data, and specifically those collected and published by the European Environment Agency represent a great asset for environment and health researchers and practitioners. This presentation will summarize the use of such data for various environment and health projects and assessments at the National School of Public Health of NOVA University in Lisbon, Portugal.
Conference Proceeding
Drinking Green Tea: Despite the Risks Due to Mycotoxins, Is It Possible to Increase the Associated Health Benefits?
by
Viegas, C
,
Twarużek, M
,
Viegas, S
in
Antioxidants
,
Camellia sinensis - microbiology
,
Catechin - analogs & derivatives
2021
This research was supported by Instituto Politécnico de Lisboa, Lisbon, Portugal for funding the Project “Resistant mycobiota and mycotoxigenic profile of tea and medicinal plants” (IPL/2020/TEAResMyc_ESTeSL) and to Polish Minister of Science and Higher Education, under the program “Regional Initiative of Excellence” in 2019–2022 (Grant No. 008/RID/2018/19). R.A. was supported by FCT Individual CEEC 2018 Assistant Researcher Grant CEECIND/01570/2018.
Journal Article
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