A new species of the genus Rambutanura Deharveng, 1988 from southern Vietnam (Collembola, Neanuridae).

Rambutanura oblita sp. nov. from the southern part of Vietnam is described and illustrated.

New records of the genus Hypogastrura (Collembola: Hypogastruridae) from the Greater Caucasus, with the description of a new species from the monticola-group.

A new species of the genus Hypogastrura is described from the North Caucasus: H. metegensis sp. nov.

Hemostasis of massive bleeding from esophageal tumor: A case report.

Background: Esophageal cancer is a common type of cancer and serious bleeding from esophageal tumors can occur in routine clinical practice. The arrest of bleeding from esophageal tumor is not a trivial task, which can sometimes require nonstandard solutions. We report a case of successful hemostasis of massive bleeding from esophageal tumor performed by a novel two-balloon catheter inserted endoscopically, with a local hemostatic treatment applied.

Purine nucleoside phosphorylase controls nicotinamide riboside metabolism in mammalian cells.

Nicotinamide riboside (NR) is an effective precursor of nicotinamide adenine dinucleotide (NAD) in human and animal cells. NR supplementation can increase the level of NAD in various tissues and thereby improve physiological functions that are weakened or lost in experimental models of aging or various human pathologies. However, there are also reports questioning the efficacy of NR supplementation.

Vertagopus (Collembola, Isotomidae) of Iran and Caucasus.

The materials on the genus Vertagopus Börner from the Caucasus and Iran are revised. Two new species, V. persicus sp.