Organometallic compounds are widely used in almost all sectors of industry. as a result of emissions from natural and anthropogenic sources they are released to the environment, where they undergo a variety of conversions and interactions. some organometallic compounds exhibit high toxicity. organometallic compounds of mercury, tin, lead, selenium and arsenic are among the most common and hazar...

The essential trace mineral, selenium, has been the focus of an increasing number of research studies since the 1996 report that it decreased the risk of some common cancers. Prospective studies have generally shown some benefit of higher selenium status on the risk of prostate, lung, colorectal, and bladder cancers but trials have had mixed findings, likely highlighting the fact that supplemen...

Not only is fish a good source of protein, but it also provides essential fatty acids such as omega-3, vitamins vitamin D, and minerals selenium. However, consumers are concerned about exposure to mercury through consumption. The degree depends on both the amount type consumed. Additionally, recent studies have shown that Se can prevent poisoning. To better understand risk seafood consumption, ...

Selenium in various chemical forms has been the subject of cancer chemoprevention trials, but, more recently, selenium has been used in combination with DNA-damaging chemotherapeutics. Specifically, selenium protected tissues from dose-limiting toxicity and, in fact, allowed delivery of higher chemotherapeutic doses. At the same time, selenium did not protect cancer cells. Therefore, we seek to...

APR2 is the dominant APR (adenosine 5'-phosphosulfate reductase) in the model plant Arabidopsis thaliana, and converts activated sulfate to sulfite, a key reaction in the sulfate reduction pathway. To determine whether APR2 has a role in selenium tolerance and metabolism, a mutant Arabidopsis line (apr2-1) was studied. apr2-1 plants had decreased selenate tolerance and photosynthetic efficiency...