The Role of Bile Acids in the Human Body and in the Development of Diseases.

Bile acids are specific and quantitatively important organic components of bile, which are synthesized by hepatocytes from cholesterol and are involved in the osmotic process that ensures the outflow of bile. Bile acids include many varieties of amphipathic acid steroids. These are molecules that play a major role in the digestion of fats and the intestinal absorption of hydrophobic compounds and are also involved in the regulation of many functions of the liver, cholangiocytes, and extrahepatic tissues, acting essentially as hormones.

Novel flight style and light wings boost flight performance of tiny beetles.

Flight speed is positively correlated with body size in animals. However, miniature featherwing beetles can fly at speeds and accelerations of insects three times their size. Here we show that this performance results from a reduced wing mass and a previously unknown type of wing-motion cycle.

[Gastrointestinal Bleeding in Patients with Coronary Heart Disease: Preventive Options].

Extensive use of antithrombotic drugs (ATD) in patients with ischemic heart disease (IHD), on the one hand, provides a considerable decrease in the risk for development of life-threatening cardiovascular complications but on the other hand, is associated with a risk of gastrointestinal bleedings (GIB), which may develop in 0.5-1.0 % of patients.

Extraordinary flight performance of the smallest beetles.

Size is a key to locomotion. In insects, miniaturization leads to fundamental changes in wing structure and kinematics, making the study of flight in the smallest species important for basic biology and physics, and, potentially, for applied disciplines. However, the flight efficiency of miniature insects has never been studied, and their speed and maneuverability have remained unknown.