Vitellogenesis in male Fundulus heteroclitus (killifish) induced by selected estrogenic compounds.

Sex differences in neuronal morphology in the killifish hypothalamus.

This study examined the neuroarchitecture of the male and female killifish (Fundulus heteroclitus) hypothalamus to evaluate whether sexual dimorphism of this brain region exists in fishes as it does in mammals and other vertebrates. The rostral medulla, a brain region distinct from the hypothalamic-pituitary-gonadal axis, was also examined to determine if any observed differences were region-sp...

Interaction of fish aryl hydrocarbon receptor paralogs (AHR1 and AHR2) with the retinoblastoma protein.

The aryl hydrocarbon receptor (AHR) mediates the toxic effects of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and related compounds. In some mammalian cell lines, TCDD induces G1 cell cycle arrest, which depends on an interaction between the AHR and the retinoblastoma tumor suppressor (RB). Mammals possess one AHR, whereas fishes possess two or more AHR paralogs that differ in the domains import...

In vitro effects of prolactin, cortisol, aldosterone, and cyclic amp on branchial Na+, K+ - activated ATPase of the killifish, Fundulus heteroclitus

!!! vitro effects of prolactin, cortisol, aldosterone, and cyclic ad.enosine monophosphate were studied on branchial Na+, K+ activated ATPase of freshwater adapted killifish, Fundulus heteroclitus. Decreases in ATPase activity were found after treatment with prolactin and aldosterone. Cyclic AMP caused an increase in ATPase activity. The action of cortisol on this enzyme was not clear. A dose r...

Environmental Chemistry SILVER NANOPARTICLE TOXICITY TO ATLANTIC KILLIFISH (FUNDULUS HETEROCLITUS) AND CAENORHABDITIS ELEGANS: A COMPARISON OF MESOCOSM, MICROCOSM AND CONVENTIONAL LABORATORY STUDIES AUDREY

Neuronal nitric oxide synthase in the gill of the killifish, Fundulus heteroclitus.

Neuronal NOS (nNOS) is a constitutively expressed enzyme that catalyzes the oxidation of L-arginine and water to L-citrulline and the gas nitric oxide (NO). Nitric oxide is involved in regulation of a variety of processes, including: vascular tone, neurotransmission, and ion balance in mammals and fishes. In this study, we have cloned and characterized a putative NOS homologue from the brain of...