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Drosophila and other Dipteran flies have three different kinds of visual organs; in the adult a pair of compound eyes and three dorsal ocelli; and in the larva a pair of internal photoreceptor organs. They develop in distinct ways, yet have certain features in common. All three organs use retinal-derived chromophores, coupled to distinct opsins, to provide(More)
An ultrastructural examination of mRNA within adult rat CA1 hippocampal dendrites was conducted using two different methods. The messages for the alpha and beta forms of the calcium-calmodulin-dependent protein kinase II were localized in ultracryosections using silver-intensified gold detection of isoform-specific oligonucleotide probes. Labeling for both(More)
From a group of 436 Drosophila melanogaster cDNA clones, we selected 39 that are expressed exclusively or predominantly in the adult visual system. By sequence analysis, 20 of the clones appear to represent previously unreported distinct cDNAs. The corresponding transcripts are detected in the retina and optic lobes. The genes are scattered throughout the(More)
The Drosophila transient receptor potential (trp) gene product (TRP) shows some structural similarity to vertebrate voltage-gated Ca2+ channels. It appears to function as a novel Ca2+ channel responsible for light stimulated, inositol trisphosphate (InsP3)-mediated Ca2+ entry in the fly retina. The subcellular localization of TRP protein was determined in(More)
Ion channel transcripts from three genes were localized by the method of tissue in situ hybridization. The genes examined were the Drosophila Na+ channel genes, paralytic (para) and Drosophila Sodium Channel (DSC), and the K+ channel gene, Shaker( Sh). All three of the genes were expressed in cell bodies of the fly central nervous system, including optic(More)
BACKGROUND During the development of the Drosophila eye, specific cell types differentiate from an initially equipotent group of uncommitted precursor cells. The lozenge (lz) gene, which is a member of the Runt family of transcriptional regulators, plays a pivotal role in mediating this process through regulating the expression of several fate-specifying(More)
The Drosophila sevenless mutation results in lack of a single neuron (photoreceptor cell R7) in every ommatidium of the compound eye; the developmental defect occurs in the larval eye disc. We created P-element-induced alleles and used them to isolate the sev gene. An 8.2 kb transcript is expressed in the eye disc, behind the morphogenetic furrow,(More)
Chronic neuropathic pain following surgery represents a serious worldwide health problem leading to life-long treatment and the possibility of significant disability. In this study, neuropathic pain was modeled using the chronic constriction injury (CCI). The CCI rats exhibit mechanical hypersensitivity (typical neuropathic pain symptom) to mechanical(More)
Northern blot analysis and in situ hybridization studies reveal the highly localized expression in rat brain of transcripts from a gene (KShIIIA) encoding components for voltage-gated K+ channels. KShIIIA expression is particularly prominent throughout the dorsal thalamus. The expression of KShIIIA is compared to that of a closely related gene, here called(More)
Capacitative Ca2+ entry is a component of the inositol-lipid signaling in which depletion of inositol 1,4,5-trisphosphate (InsP3)-sensitive Ca2+ stores activates Ca2+ influx by a mechanism that is still unknown. This pathway plays a central role in cellular signaling, which is mediated by many hormones, neurotransmitters, and growth factors. Studies of(More)