Oleoyl proline is an N-acyl amine that can be detected in bovine brain extracts and D. melanogaster larvae using mass spectrometry. In a preclinical model of pain, mice lacking fatty acid amide hydrolase (FAAH KO) had decreased N-oleoyl proline levels in
Albaspidin AA displays strong antibacterial activity against the vegetative form of P. larvae (MIC ranging from 0.168-220 uM). It may have in vitro nematocidal activity against L4 stage larvae.
Leucanicidin is a macrolide bacterial metabolite originally isolated from S. halstedii. It is toxic to L. separata fourth instar larvae when used at a concentration of 20 ppm and to H. contortus, T. colubriformis, and O. circumcincta larvae (LD50s = 0.23-
Collismycin A is a bacterial metabolite originally isolated from Streptomyces that has diverse biological activities, including antibacterial, antiproliferative, and neuroprotective properties. It is active against a variety of bacteria (MICs = 6.25 and 100 μg ml) and fungi (MICs = 12.5-100 μg ml). It inhibits proliferation of A549 lung, HCT116 colon, and HeLa cervical cancer cells (IC50s = 0.3, 0.6, and 0.3 μM, respectively) and NIH373 fibroblasts (IC50 = 56.6 μM) but not MDA-MD-231 breast cancer cells (IC50 = >100 μM). Collismycin A forms a complex with Fe(II) and Fe(III) at a 2:1 ratio, and the addition of iron ions inhibits the antiproliferative effect of collismycin A on HeLa cells, an effect that does not occur with the addition of zinc, manganese, copper, or magnesium ions. Collismycin A (1 μM) prevents apoptosis in the brain region of zebrafish larvae by 44% in a model of neuronal cell death induced by all-trans retinoic acid .
2-chloro Stearic acid is a bioactive fatty acid that accumulates in primary human monocytes and neutrophils as well as murine neutrophils stimulated with phorbol 12-myristate 13-acetate . It induces DNA release from primary human neutrophils. 2-chloro Stearic acid is toxic to C. quinquefasciatus larvae (LC50 = <1 ppm).
Aspergillimide is a fungal metabolite originally isolated from A. japonicus.1 It reduces nicotinic acetylcholine receptor (nAChR) peak and slowly-desensitizing amplitudes induced by acetylcholine in silkworm (B. mori) larval neurons (IC50s = 20.2 and 39.6 nM, respectively) but has no effect on chicken α3β4-, α4β2-, and α7-containing nAChRs.2 Dietary administration of aspergillimide A (10 μg/g of diet) induces paralysis in silkworm fourth instar larvae.1 Aspergillimide A (10 and 20 mg/kg) reduces T. colubriformis fecal egg count in gerbils.3References1. Hayashi, H., Nishimoto, Y., Akiyama, K., et al. New paralytic alkaloids, asperparalines A, B and C, from Aspergillus japonicus JV-23. Biosci. Biotechnol. Biochem. 64(1), 111-115 (2000).2. Hirata, K., Kataoka, S., Furutani, S., et al. A fungal metabolite asperparaline a strongly and selectively blocks insect nicotinic acetylcholine receptors: The first report on the mode of action. PLoS One 6(4), e18354 (2011).3. Banks, R.M., Blanchflower, S.E., Everett, J.R., et al. Novel anthelmintic metabolites from an Aspergillus species; the aspergillimides. J. Antibiot. (Tokyo) 50(10), 840-846 (1997). Aspergillimide is a fungal metabolite originally isolated from A. japonicus.1 It reduces nicotinic acetylcholine receptor (nAChR) peak and slowly-desensitizing amplitudes induced by acetylcholine in silkworm (B. mori) larval neurons (IC50s = 20.2 and 39.6 nM, respectively) but has no effect on chicken α3β4-, α4β2-, and α7-containing nAChRs.2 Dietary administration of aspergillimide A (10 μg/g of diet) induces paralysis in silkworm fourth instar larvae.1 Aspergillimide A (10 and 20 mg/kg) reduces T. colubriformis fecal egg count in gerbils.3 References1. Hayashi, H., Nishimoto, Y., Akiyama, K., et al. New paralytic alkaloids, asperparalines A, B and C, from Aspergillus japonicus JV-23. Biosci. Biotechnol. Biochem. 64(1), 111-115 (2000).2. Hirata, K., Kataoka, S., Furutani, S., et al. A fungal metabolite asperparaline a strongly and selectively blocks insect nicotinic acetylcholine receptors: The first report on the mode of action. PLoS One 6(4), e18354 (2011).3. Banks, R.M., Blanchflower, S.E., Everett, J.R., et al. Novel anthelmintic metabolites from an Aspergillus species; the aspergillimides. J. Antibiot. (Tokyo) 50(10), 840-846 (1997).
5-hydroxy Thiabendazole (5-OH TBZ) is a major metabolite of the anthelmintic thiabendazole . Unlike thiabendazole, 5-OH TBZ has no effect on the growth of third-stage A. caninum larvae.