Breaking News
January 23, 2019 - The Tiny Camera That Could Revolutionize Cardiovascular Surgery
January 23, 2019 - Peptide isolated from soil fungi has antitumor and antibacterial properties
January 23, 2019 - TGen identifies polio-like virus as potential cause of Acute Flaccid Myelitis outbreak
January 23, 2019 - Migrants and refugees do not bring disease and are at greater health risk themselves says WHO
January 23, 2019 - Examing the effects of menopause in workplace
January 23, 2019 - Enemy number 1 – Air pollution and climate change top of WHO agenda
January 23, 2019 - Two Positive Phase III studies of Tafenoquine for the Radical Cure of Plasmodium vivax Malaria Published in The New England Journal of Medicine
January 23, 2019 - World Trade Center responders at increased risk for head and neck cancers
January 23, 2019 - Low-sugar diet leads to significant improvement in nonalcoholic fatty liver disease in boys
January 23, 2019 - Chaos in bodily regulation can optimize our immune system, finds study
January 23, 2019 - Short, text-based exercises can increase happiness for adults recovering from substance use disorders
January 23, 2019 - Body size may have greater influence on women’s lifespan than men
January 23, 2019 - Groundbreaking tool helps visualize neuronal activity with near-infrared light
January 23, 2019 - Holocaust survivors with PTSD and their offspring exhibit more unhealthy behavior patterns
January 23, 2019 - Scientists discover new genetic mutations causing inherited deaf-blindness
January 23, 2019 - UC team designs new naloxone-dispensing smart device
January 23, 2019 - Torrent Pharmaceuticals Limited Issues Voluntary Nationwide Recall of Losartan Potassium Tablets, USP and Losartan Potassium and Hydrochlorothiazide Tablets, USP
January 23, 2019 - Brain activity shows development of visual sensitivity in autism
January 23, 2019 - Two hour gap between dinner and sleep is overrated says Japanese research
January 23, 2019 - Fear and embarrassment are causing smear test numbers to plummet
January 23, 2019 - Protein-secreting device implanted in epileptic rats reduces seizures, improves cognition
January 23, 2019 - Reintroduction project recovers current wild population of green turtle in Cayman Islands
January 23, 2019 - Cancer survivors face greater financial burden related to medical bills
January 23, 2019 - PSA screening reduces prostate cancer deaths by 30%
January 23, 2019 - LSTM receives grant to help improve health of people living in informal settlements
January 23, 2019 - Hemochromatosis Mutation Linked to Other Morbidity
January 23, 2019 - Why early diagnosis of autism should lead to early intervention
January 23, 2019 - Aspirin May Lower Stroke Risk in Women with History of Preeclampsia
January 23, 2019 - Exposure to certain chemicals may be linked to decrease in blood pressure during pregnancy
January 23, 2019 - Bowel cancer on the rise among younger Australians
January 23, 2019 - Scientists have reversed memory loss in a mouse model of Alzheimer’s
January 23, 2019 - Defective molecular master switch could lead to age-related macular degeneration
January 23, 2019 - Researchers identify how concussions may contribute to seizures
January 23, 2019 - Short interval between last meal of the day and bedtime may not affect blood glucose levels
January 23, 2019 - Still Too Many Highway Deaths Tied to Speeding
January 23, 2019 - Prenatal valproate exposure linked to increased ADHD risk
January 23, 2019 - Compound identified that may help treat heart failure
January 23, 2019 - Undiagnosed Asthma in Urban Adolescents May Be Common
January 23, 2019 - Study describes metabolism of intestinal microbiota in babies for the first time
January 22, 2019 - Study links concussions to development of epilepsy
January 22, 2019 - Specialist-led hospital bereavement service may help restrain legal action after difficult deaths
January 22, 2019 - Genetic study reveals possible new routes to treating osteoarthritis
January 22, 2019 - Blood test may detect early signs of lung-transplant rejection
January 22, 2019 - Blood marker could aid in early prediction of Alzheimer’s progression
January 22, 2019 - Orthodontic treatment does not guarantee future dental health
January 22, 2019 - Rutgers researchers discover cause of bone loss in people with joint replacements
January 22, 2019 - Diversity among rural Africans extends to their gut microbiomes
January 22, 2019 - Newly developed biological system lets cells to create self-curving cornea
January 22, 2019 - VTv Therapeutics Announces Publication of Comprehensive Data in Science Translational Medicine Detailing the Discovery and Clinical Development of TTP399, including Results of Phase 2 AGATA Study
January 22, 2019 - about one in three adults with prediabetes has arthritis
January 22, 2019 - A look at how data is democratizing health care
January 22, 2019 - Alcohol-Linked Disease Overtakes Hep C As Top Reason For Liver Transplant
January 22, 2019 - Researchers identify new genes linked with age-related macular degeneration
January 22, 2019 - MPFI researchers identify synaptic logic for connections between two brain hemispheres
January 22, 2019 - New approach to reduce toxic protein production in ALS
January 22, 2019 - New study extends our knowledge of the link between miRNAs and cancer
January 22, 2019 - Asthma, eczema are not barriers to active lifestyle in teenagers
January 22, 2019 - Genetic changes may predict likelihood of relapse in breast cancer patients
January 22, 2019 - Antiepileptic drug use by people with Alzheimer’s disease linked to accumulation of hospital days
January 22, 2019 - IUPUI researcher receives $2.85 million grant to find ways to improve bone strength
January 22, 2019 - Precision medicine can help keep astronauts healthy during deep space missions
January 22, 2019 - Detecting signs of neurodegeneration earlier and more accurately
January 22, 2019 - Mouse studies challenge ‘inhibition’ theory of autism
January 22, 2019 - SSB launches BIOSTAT RM TX single-use bioreactor for producing consistent quality cellular products
January 22, 2019 - Experimental drug can positively modify key characteristic behavior in FXS patients
January 22, 2019 - Low-Income Women Lack Menstrual Hygiene Supplies
January 22, 2019 - Better mouse model built to enable precision-medicine research for Alzheimer’s
January 22, 2019 - Molecular profiling of precancerous lung lesions could lead to early detection and new treatments
January 22, 2019 - Genetic factors influence where fat is stored in our bodies
January 22, 2019 - The Psychology Behind Sticking to Your New Year’s Resolutions
January 22, 2019 - Scientists aim to find genetic causes of developmental abnormalities in the vagina and uterus
January 22, 2019 - New survey reveals scale of preventative healthcare challenge in the UK
January 22, 2019 - Looming Global Crisis Means People’s Diets Must Change: Experts
January 22, 2019 - Excessive social media use is comparable to drug addiction
January 22, 2019 - Researchers show how mechanical stress affects bone development
January 22, 2019 - Study takes a step closer to understanding the body’s response to opioid painkillers
January 22, 2019 - Unexpected connection found between feeding and memory centers of the brain
January 22, 2019 - A revolutionary approach transforms bone trauma treatment
January 22, 2019 - Early studies and recent clinical trials on nerve growth factor
January 22, 2019 - Dry Mouth and Older Adults: Information for Caregivers
New project aims to estimate scientific basis of health risks posed by substance mixtures

New project aims to estimate scientific basis of health risks posed by substance mixtures

image_pdfDownload PDFimage_print

The BfR is involved with two work groups in the project, which is being coordinated by the Dutch National Institute for Public Health and the Environment (RIVM).

In addition to residues of the active substances contained in plant protection products, the work focuses on contaminants in foods and potentially health-damaging food ingredients. “The goal is to be able to make a more realistic estimation on a scientific basis of the health risks posed by substance mixtures of this kind,” explains BfR President, Professor Dr. Dr. Andreas Hensel. Strategies for identifying toxicologically relevant substances, for example, and the first results of tests on the toxicity of multiple residues of the active substances contained in plant protection products are to be presented at the 8th Consortium Meeting.

Consumers are exposed every day to a wide variety of undesired substances which are potentially damaging to health. Using computer-supported in silico methods (QSAR) and with the help of exposure modeling, a strategy for prioritizing the substances relevant to risk assessment in mixture experiments has been developed in the EuroMix project. This enables the fast and necessary restriction of the extensive list of substances and substance classes to be tested. As a large number of different substance mixtures is conceivable, EuroMix has concentrated on a small number of particularly relevant key mixtures identified at the beginning of the project. One area of main focus here lies in mixtures of the active substances contained in plant protection products.

Parallel to this, a test strategy was devised to test and characterize the effects of substance mixtures of many different classes with regard to their damaging effect on the liver, the development of the organism and the endocrine system. New methods were developed here among other things which enable a high test throughput at low costs as an alternative to experiments with animals in order to facilitate the testing of a large number of relevant substance combinations.

To test combination effects in the liver, for instance, a toolbox was specially developed for the specific symptoms of pathological fatty liver (steatosis) which permits a forecast of combination effects with the help of consecutive in vitro test methods. The successful use (proof of principle) of the system has already been published and was achieved with a pesticide with a known mechanism of action. This toolbox was then used for the characterization of mixture effects. It could be seen here, especially for the class of pesticides, that above all dose addition effects predominate for which a risk assessment concept already exists. The successfully tested toolbox can also be used for the testing of other relevant substance classes in order to characterise and/or examine substance combinations for effects such as inhibition, dose addition or synergism. The objective here is to be able to better assess the interaction of substances in mixtures. At the end, a web-based evaluation toolbox should be available for the analysis and overall assessment of mixtures.

Source:

https://www.bfr.bund.de/en/press_information/2018/35/are_substance_mixtures_in_foods_more_dangerous_than_individual_substances_-206633.html

About author

Related Articles