Introduction The treatment of hypertension with certain groups of drugs may be problematic, particularly because certain drugs are capable of potentiating carcinogenesis. The presence of various receptors or components of the renin – angiotensin system in the skin, and particularly in melanocytes, determines the possible influence on this tissue…[Read more]

Urine is often used for biomonitoring the exposure to elements. However, most studies report concentrations in spot urine samples, which may not accurately mirror the “gold standard” of complete 24-h (24h) urine samples. There are relatively few data published for 24h samples, and little information on the within- and between person…[Read more]

Profound biogeochemical responses of anoxic sediments to the fluctuation of dissolved oxygen (DO) concentration in overlaying water are often observed, despite oxygen having a limited permeability in sediments. This contradiction is indicative of previously unrecognized mechanism that bridges the oxic and anoxic sediment layers. Using sediments…[Read more]