Discovery of novel (N-aryl-4-methylpiperidinyl)pyrazoles: a new class of potent lepidopteran insecticides.

BACKGROUND: Insects of the order Lepidoptera are among the most destructive global pests, causing billions of dollars in damage annually. A new class of N-arylpyrazole-4-methylpiperidines with potent activity on lepidopteran species has been discovered. RESULTS: In a high-throughput insecticide screen compound 1 was identified to possess modest activity on the lepidopteran insect Plutella xylostella. Optimization of 1 to compound 42 resulted in a compound with excellent activity on Spodoptera exigua, Spodoptera frugiperda, and Helicoverpa zea with median lethal concentrations values of 2.8, 1.4, and 12.5 ppm respectively. Although the mode of action remains unknown, these compounds do not appear to work by many of the known biochemical mechanisms of insect control. CONCLUSION: N-Arylpyrazole-4-methylpiperidines represent a new class of insecticides with excellent activity on a broad spectrum of lepidopteran pests. Studies to date indicate the potential for a novel mode of action; however, the target site is unknown at present. © 2023 Society of Chemical Industry.

Questioning the role of abuse in behavioral spells and epilepsy.

Past sexual trauma is frequently linked to the development of behavioral spells, present among 30% of patients admitted for video/EEG monitoring. Current attempts to verify and explore mechanisms in this reported association revealed that patients with epilepsy (n=58) and those with behavioral spells (n=38) did not differ in their self-report of past sexual trauma (among approximately 38% in each group). Ninety percent (90%) of men with behavioral spells endorsed past physical abuse, however, compared with 45% of men with epilepsy, and 40% of men with spells likely met current criteria for posttraumatic stress disorder. Among all patients, the presence of past physical, but not sexual, abuse positively predicted the diagnosis of spells rather than epilepsy. Current findings do not support a preponderance of sexual trauma in behavioral spells, yet within the subset of men with spells, greater exposure to physical abuse and current symptoms of posttraumatic stress disorder may be important etiological and sustaining factors.