Some students are helping themselves to servings of tuna well beyond the amounts recommended to avoid consuming too much mercury. Researchers surveyed students on their tuna consumption habits and knowledge of mercury exposure risks, and also measured the mercury levels in hair samples. Hair mercury levels were closely correlated with how much tuna the students said they ate. And for some, the measurements were above what is considered a 'level of concern.'
A comprehensive database of gene activity in mice across ten disease models, which could significantly reduce animal use worldwide, has been developed by scientists at the Francis Crick Institute, which gives a full picture of the immune response to different pathogens.
The sea slug Elysia rufescens fights predators by wielding toxic chemicals that it acquires from eating algae. A Princeton-led team has discovered that these chemicals are made by bacteria living inside the algae, highlighting a surprising three-way dependence among sea slugs, algae and bacteria.
Researchers from the California Department of Fish and Wildlife's Wildlife Investigations Laboratory present their results from a toxicological investigation into a mortality event involving songbirds in a new publication in Environmental Toxicology and Chemistry.
For the first time, scientists exposed pregnant and lactating mice to sucralose and acesulfame-K -- a common combination in soda, sports supplements and other sweetened products -- and found their pups developed harmful metabolic and gut bacteria changes. Published in Frontiers in Microbiology, the study reinforces an emerging consensus: artificial sweeteners may be safe when used in moderation by adults, but they are not a 'magic bullet' alternative to sugar.
An enzyme that modifies chemicals formed in the body by alcohol, tobacco, and certain foods may be a new target for treating Parkinson's disease, according to a team led by University of Pennsylvania scientists. The altered compounds, the researchers found, may play a role in triggering the onset or advancing the progression of the neurodegenerative condition.
According to ecotoxicologist from Far Eastern Federal University (FEFU), from the '90s and during 2000s in the tissues of Russian Far Eastern mussels the concentration of organochlorine pesticides (OCPs) that had been globally used in agriculture in the mid-20th century has increased about 10 times. OCPs pollute and affect badly the ecosystems of the Sea of Japan, the Sea of Okhotsk, and the Bering Sea. A related review was published in Water Research.
If the fatty fish we eat were free of environmental pollutants, it would reduce our risk of developing type 2 diabetes. However, the pollutants in the fish have the opposite effect and appears to eliminate the protective effect from fatty fish intake. This has been shown by researchers at Chalmers University of Technology in Sweden, using innovative methods that could be used to address several questions about food and health in future studies.
A new study from UC San Francisco suggests that a protein found in the common bullfrog may one day be used to detect and neutralize a poisonous compound produced by red tides and other harmful algal blooms. The discovery comes as these waterborne toxic events are becoming increasingly common, a consequence of climate change making the world's oceans more hospitable to the microbes responsible for these formerly infrequent flare-ups.
Combining research-oriented teaching and interdisciplinary collaboration pays off: researchers at the University of Konstanz develop a novel spectroscopic approach to investigate hitherto difficult-to-observe protein structures. On 'campus.kn,' the online magazine of the University of Konstanz, we report on the new approach and its origin at the interface between chemistry and biology.