J. A. Veenstra

Different neuroendocrine cell types in the pars intercerebralis of Periplaneta americana produce their own specific IGF-related peptides

The paper identifies distinct neuroendocrine cell types in the pars intercerebralis of Periplaneta americana that produce specific IGF-related peptides, contrasting with Drosophila's single cell type expressing multiple peptides.

Pigment-Dispersing Factor is present in circadian clock neurons of pea aphids and may mediate photoperiodic signaling to insulin-producing cells

This study identifies a Pigment-Dispersing Factor (PDF) in pea aphids, showing its presence in circadian clock neurons and potential role in photoperiodic signaling to insulin-producing cells.

Differential expression of some termite neuropeptides and insulin/IGF-related hormones and their plausible functions in growth, reproduction and caste determination

The paper identifies and hypothesizes the functions of insulin-like peptides and neuropeptides in termites, linking their differential expression to growth, reproduction, and caste determination.

Ambulacrarian insulin-related peptides and their putative receptors suggest how insulin and similar peptides may have evolved from Insulin-like Growth Factor

The paper identifies insulin-related peptides and their receptors in ambulacrarians, suggesting that insulin and similar peptides evolved from a gene triplication present in the last common ancestor of protostomes and deuterostomes.

The neuropeptide SMYamide, a SIFamide paralog, is expressed by salivary gland innervating neurons in the American cockroach and likely functions as a hormone

Arthropod IGF, Relaxin and Gonadulin, putative orthologs of Drosophila insulin-like peptides 6, 7 and 8, likely originated from an ancient gene triplication

Gonadulins, the fourth type of Insulin-related peptides in Decapods

The paper identifies two novel insulin-related peptides in decapod crustaceans, suggesting a fourth type, and describes their expression patterns in gonads.

The hormone neuroparsin seems essential in Lepidoptera but not in domesticated silkworms

The paper identifies neuroparsin in Lepidoptera but finds a nonfunctional variant in domesticated silkworms due to a deletion.