Influence of long-term administration of rutin on spatial memory as well as the concentration of brain neurotransmitters in aged rats.

Background: The present study was designed to investigate the behavioral and neurochemical effects of long-term oral rutin administration to old male WAG rats (100 and 200 mg/kg b.w./day).

Relationship between selenium accumulation and mycelial cell composition in Lentinula edodes (Berk.) cultures.

It was postulated that fractions enriched in selenium (Se) isolated from Lentinula edodes mycelium polysaccharide might possess higher biological activity than the non-enriched fractions currently used to treat cancer. In order to obtain Se-enriched mycelial preparations, L. edodes cultures were cultivated in media enriched with sodium selenite.

Effect of Alkaloid-Free and Alkaloid-Rich preparations from Uncaria tomentosa bark on mitotic activity and chromosome morphology evaluated by Allium Test.

Ethnopharmacological Relevance: Uncaria tomentosa (Willd.) DC. is the most popular Peruvian plant, used in folk medicine for different purposes.

Changes in chromosome structure, mitotic activity and nuclear DNA content from cells of Allium Test induced by bark water extract of Uncaria tomentosa (Willd.) DC.

The influence of water extract of Uncaria tomentosa (Willd.) DC bark on the meristematic cells of the root tips of Allium cepa L., e.

Antiproliferative and antimitotic effect, S phase accumulation and induction of apoptosis and necrosis after treatment of extract from Rhodiola rosea rhizomes on HL-60 cells.

Rhodiola rosea is a medicinal plant having stimulating and adaptogenic properties, and some reports also indicate its anticancer and antimutagenic effect. However, the mechanism of its anticancer effect is unknown as there have been no cytological studies regarding cytostatics, cell cycle, induction of apoptosis or the mitotic activity of healthy and cancerous cells. In the present paper, those parameters were investigated using HL-60 cells, with flow cytometry and fluorescence microscopy.

Influence of water extracts from the surface of two yew (Taxus) species on mites (Tetranychus urticae).

Taxus cuspidata and Taxus media var. Hicksii contain paclitaxel, among other taxoids, on the surface of the needles. These compounds were removed by 5-s dipping of the needles in water just below its boiling point at 96 degrees C and at 60 degrees C and 40 degrees C.