Assessment of the Hormetic Effect of Arsenic on Growth and Physiology of Two Cultivars of Maize ( L.).

Although growth stimulation at low arsenic doses was observed in several plants, few studies have focused on this phenomenon in more detail. The effects of different concentrations of arsenic (0-50 mg kg of soil: As0-As50) on the growth and selected physiological parameters of two maize cultivars ( L. cvs.

The Cell-Wall β-d-Glucan in Leaves of Oat ( L.) Affected by Fungal Pathogen f. sp. .

In addition to the structural and storage functions of the (1,3; 1,4)-β-d-glucans (β-d-glucan), the possible protective role of this polymer under biotic stresses is still debated. The aim of this study was to contribute to this hypothesis by analyzing the β-d-glucans content, expression of related cellulose synthase-like () , , genes, content of chlorophylls, and β-1,3-glucanase content in oat ( L.) leaves infected with the commonly occurring oat fungal pathogen, f.

[X-ray densitometry and ultrasonography of the heel bone--sensitivity and comparison with densitometry of the axial skeleton].

Background: The aim of the study was to determine the relationship between dual energy x-ray absorptiometry (DXA) and quantitative ultrasonometry (QUS) of calcaneus and their correlation with axial bone mineral density.

Methods And Results: 1284 subjects were tested for BMD (Bone Mineral Density) by DXA at the spine and hip (707 subjects by DPX-L, Lunar, and 577 subjects by QDR-4500 A, Hologic) and calcaneus (by PIXI, Lunar). The calcaneus was also measured using the QUS (Achilles Plus, Lunar), on the same day.

Aminoglutethimide, an inhibitor of adrenal steroidogenesis, blocks heart growth after ligation of the abdominal aorta and in hyperthyroidism in rats.

With reference to the indirect evidence showing that heart growth in the presence of a cardiac overload is modulated by the adrenal cortex, we studied heart reactions to overloading (ligation of the abdominal aorta or hyperthyroidism) with simultaneous administration of aminoglutethimide, an inhibitor of steroidogenesis. Aminoglutethimide (Elipten CIBA, 0.5% in the diet) markedly inhibited the growth reaction of the heart 14 days after ligation of the abdominal aorta (reducing the aortal blood flow to about 40%) or after the administration of dried thyroid (Thyreoidin SPOFA, 0.