Shifting Mountain Tree Line Increases Soil Organic Carbon Stability Regardless of Land Use.

Climate and land use changes are causing trees line to shift up into mountain meadows. The effect of this vegetation change on the partitioning of soil carbon (C) between the labile particulate organic matter (POM-C) and stable mineral-associated organic matter (MAOM-C) pools is poorly understood. Therefore, we assessed these C pools in a 10 cm topsoil layer along forest-meadow ecotones with different land uses (reserve and pasture) in the Northwest Caucasus of Russia using the size fractionation technique (POM 0.

Physiological Features of Perigonadal Adipose Tissue Containing Uncoupling Protein UCP1 in ICR Mice.

Immunoreactive uncoupling protein UCP1 was found in the perigonadal fat of only twothirds of 14-week-old male ICR mice. The presence of UCP1 had no effect on the rate of O2 consumption by the adipose tissue. The cellularity of perigonadal fat estimated by the DNA content was significantly higher in tissue containing UCP1 than in samples without this protein.

Can thermogenic adipocytes protect from obesity?

The role of brown adipocytes and adipocytes of a new beige type in the energy metabolism of a healthy person and in the pathogenesis of obesity has extensively been discussed in recent years. The interest to these cells has been stimulated owing to the application of new noninvasive methods for studying the metabolic activity of tissues. Using these methods, the presence of thermogenically active adipocytes in adults and their reactivity to cold stimuli have been proved.

Effects of Long-Term Food Restriction Under Thermoneutral Conditions on Brown Adipose Tissue of Laboratory Mice.

Long-term food restriction (3 weeks, 60% of normal consumption of control animals) was followed by an increase in DNA and protein content in the intercapsular brown fat of mice. As the animals were kept under thermoneutral conditions, these changes are thought to be a result of food restriction.

Energy metabolism and biochemical features of adipose tissues in ICR mice after long-term calorie-restricted diet.

Long-term calorie-restricted diet (8 weeks, 60% of control food intake) was followed by an increase in thermogenic activity of interscapular brown fat. The relative amount of DNA and protein and the rate of oxygen consumption increased and tissue-specific marker of brown fat (uncoupling protein UCP1) appeared in significantly reduced deep-pink abdominal adipose tissue.