[Spontaneous and inducible respiratory burst of monocytes and neutrophils in periodic autoinflammatory fever].

We investigated spontaneous, chemotaxis-, phagocytosis- and proteinkinase C-dependent respiratory burst of neutrophils and monocytes in the whole blood of patients with familial Mediterranean fever (FMF). We also analysed transient activation of neutrophils and monocytes on the level of a single cell using flow cytofluorimetry. It is shown that compared to healthy donors, the respiratory burst of monocytes and neutrophils in the patients is characterized by an increase in both spontaneous and inducible production of free radicals.

[Regulating effect of gamma-aminobutyric acid and pyrrolidone-2 on endogenous blood metalloproteins with anti- and pro-oxidant activity in hypoxia].

Various stages of hypokinesia are marked by specific changes in the level and activity of endogenous metalloproteins with anti- (MAA) and prooxidant action (MPA). In particular, the level of MPA [cytochromes b5 and b558 (III + IV) and suprol] decreases in all stages (except for the level of cytochrome b5 exceeding that in the free control on the 15th and 30th day of hypokinesia). The superoxide production activity of suprol always exceeds that in the control, while the activity of cytochrome b558 (III) exceeds that in the control only on the 30th day of experiment.

Volatile Semiochemicals Released from Undamaged Cotton Leaves (A Systemic Response of Living Plants to Caterpillar Damage).

Cotton plants (Gossypium hirsutum L.), attacked by herbivorous insects release volatile semiochemicals (chemical signals) that attract natural enemies of the herbivores to the damaged plants. We found chemical evidence that volatiles are released not only at the damaged site but from the entire cotton plant.

Photosynthetic photon flux, photoperiod, and temperature effects on emissions of (Z)-3-hexenal, (Z)-3-hexenol, and (Z)-3-hexenyl acetate from lettuce.

To investigate the effects of environment on plant volatile emissions, 'Waldmann's Green' leaf lettuce was cultivated under different levels of photosynthetic photon flux (PPF), photoperiod, and temperature. A modified growth chamber was used to sample plant volatile emissions nondestructively, over time, and under controlled conditions. Total volatile emission rates were significantly higher from lettuce cultivated under PPF of 360 or 200 micromoles m-2 s-1 compared to 105 micromoles m-2 s-1, and significantly higher under a 16-h photoperiod than an 8-h photoperiod.