Toonanoronoids A-E, five new limonoids from Toona ciliata var. yunnanensis.

Five new B-seco-limonoids, namely toonanoronoids A-E (1-5), in conjunction with three previously reported compounds, were isolated from the EtOAc extract of the twigs and leaves of Toona ciliata var. yunnanensis. Their structures were elucidated through comprehensive spectroscopic and X-ray crystallographic analysis.

Alternaria toxin-induced resistance in rose plants against rose aphid (Macrosiphum rosivorum): effect of tenuazonic acid.

Many different types of toxins are produced by the fungus, Alternaria alternata (Fr.) Keissler. Little is known, however, regarding the influence of these toxins on insects.

Alternaria toxin-induced resistance against rose aphids and olfactory response of aphids to toxin-induced volatiles of rose plants.

The search for active toxins for managing weeds or plant diseases is believed to be a promising avenue of investigation. However, the effects of Alternaria toxins on insects have just begun to be investigated. Bioactivities of toxins from four strains of Alternaria alternata on Rosa chinensis and rose aphid Macrosiphum rosivorum were tested in the present study.

[Heart-type fatty acid-binding protein alteration in rat's cardiocyte after acute myocardial infarction].

Aim: To explore the changes of mRNA and protein expressions of heart-type fatty acid binding protein (H-FABP) in rat ischemic myocardium at different intervals ischemia.

Methods: 60 SD male rats weighing 250-350 g, were randomly divided into one sham-operated group and five study groups (group A1, A2, A3, A4, A5, the left coronary artery of rats has been ligated for 1 h, 2 h, 4 h, 6 h, 12 h respectively). Myocardil samples from infarct zone, ischemic and non-ischemic zone, were obtained for histology examination, and the mRNA for H-FABP in ischemic myocardial tissue were determined by RT-PCR.