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Welcome to the Pubget Medical Subject Headings (MESH) browser. Click on a topic or subtopic below to explore related papers. In the gold box is the most recent paper about the current MESH term, and below are 20 related papers.
Compound Eye, Arthropod (0):
Recent article
Compound Eye, Arthropod
Abstract
Our purpose was to investigate cell division and death in the optic lobes (OL) of workers, queens and males during pupation to identify how the differences in the compound eyes in adults of these classes are achieved. The results showed that OL differentiation follows a similar pattern in the three...
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PMID: 20826951
PDF is available here.
PDF is available here.
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Brain research (1324) 2010
Abstract
The tumor suppressor vitamin D(3) up-regulated protein 1 (VDUP1) is expressed throughout the developing and mature Drosophila nervous system, but its regulatory pathways are not well understood. Within the developing Drosophila visual system, down-regulation of VDUP1 in lamina precursor cells (LPCs)...
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PMID: 20138028
PDF is available here.
PDF is available here.
Abstract
We investigated the developmental basis of this evolutionary transformation in a directly developing insect taking advantage of the time-limited nature of systemic RNAi in the grasshopper Schistocerca americana. Transient knockdown of the homologs of the early retinal genes eyes absent (eya) or sine...
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PMID: 19637278
PDF is available here.
PDF is available here.
Abstract
We examined these compromises in four species of nymphalid butterflies that varied in body mass over almost two orders of magnitude. The largest of these species was crepuscular and so additionally may indicate the potential effect of life style on eye structure. Across these species, as body size i...
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PMID: 18809509
PDF is available here.
PDF is available here.
Abstract
We show that the temporal expression dynamics of the zinc-finger protein sequoia is the major determinant of Drosophila photoreceptor connectivity into distinct synaptic layers. Neighbouring R8 and R7 photoreceptors show consecutive peaks of elevated sequoia expression, which correspond to their seq...
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PMID: 18978776
PDF is available here.
PDF is available here.
Abstract
We show that a key step in the targeting of the R7 neuron is the active repression of the R8 targeting program. Repression is dependent on NF-YC, a subunit of the NF-Y (nuclear factor Y) transcription factor. In the absence of NF-YC, R7 axons terminate in the same layer as R8 axons. Genetic experime...
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PMID: 18978774
PDF is available here.
PDF is available here.
Abstract
I provide a detailed description of fly tauopathy models and summarize a number of studies that demonstrate their ability to recapitulate both primary features of tauopathy, including tau-induced neurodegeneration and phosphorylation, and secondary features, including oxidative stress, cell-cycle ac...
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PMID: 19096155
PDF is available here.
PDF is available here.
Journal of Experimental Biology (211)Pt 21 2008
Abstract
We find that flies mutant for these genes, and another binding partner, scarlet, have about half the wild-type amount of histamine in the head, as well as reduced 5-HT and dopamine. These differences parallel reductions in immunoreactivity to the corresponding biogenic amines. They also correlate wi...
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PMID: 18931318
PDF is available here.
PDF is available here.
Abstract
We identified the first-order interneurons downstream of the chromatic channels. Serial EM revealed that small-field projection neurons Tm5 and Tm9 receive direct synaptic input from R7 and R8, respectively, and indirect input from R1-R6, qualifying them to function as color-opponent neurons. Wide-f...
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PMID: 18957224
PDF is available here.
PDF is available here.
Abstract
The Drosophila Bolwig organs are small photoreceptor bundles that facilitate the phototactic behavior of the larva. Comparative literature suggests that these highly reduced visual organs share evolutionary ancestry with the adult compound eye. A recent molecular genetic study produced the first det...
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PMID: 18800378
PDF is available here.
PDF is available here.
Development (135)16 2008
Abstract
We show that the transcription of pros is activated by two visual-specific transcription selectors, Glass and Sine Oculis, that bind to an enhancer and promote its activation. Together with the pre-patterning transcription factor Lozenge, these factors work in a highly combinatorial manner, such tha...
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PMID: 18635611
PDF is available here.
PDF is available here.
Journal of Experimental Biology (211)Pt 14 2008
Abstract
We have analyzed the masking effects of a lights-on (LOn) signal on Drosophila eclosion. The LOn response results in 12-21% of the flies that emerge on a given day eclosing within 10 min of the LOn signal. Flies that lack the neuropeptide eclosion hormone (EH), or in which its release is inhibited b...
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PMID: 18587121
PDF is available here.
PDF is available here.
Journal of Experimental Biology (211)Pt 11 2008
Abstract
I propose a model for the patterning of the ancestral butterfly eye that is most closely aligned with the nymphalid eye. The R1 and R2 cells of the main retina expressed UV-UV-, UV-B- or B-B-absorbing visual pigments while the R3-9 cells expressed a LW-absorbing visual pigment. Visual systems of exi...
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PMID: 18490396
PDF is available here.
PDF is available here.
Developmental Biology (317)2 2008
Abstract
We report that septate junctions (SJs), the vertebrate analogs of TJs, are present in the adult ommatidia and are formed between and among the cone and pigment cells. We show that the localization of Neurexin IV (Nrx IV), a SJ-specific protein, coincides with the location of SJs in the cone and pigm...
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PMID: 18407259
PDF is available here.
PDF is available here.
Development (135)9 2008
Abstract
We investigated the importance of the Antennapedia (Antp) YPWM motif for homeotic transformations in adult Drosophila. By ectopic overexpression, the head structures of the fly can be transformed into structures of the second thoracic segment, such as antenna into second leg, head capsule into thora...
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PMID: 18367556
PDF is available here.
PDF is available here.
Abstract
We have constructed transgenic flies that overexpress the human DEK in the developing eye. Transgenic flies developed a severe rough eye phenotype, which is indicative of ectopically induced apoptosis. Genetic and biochemical analyses, including the rescue of the apoptotic phenotype by pan-caspase i...
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PMID: 17685435
PDF is available here.
PDF is available here.
Developmental Biology (314)1 2008
Abstract
We describe the isolation of Drosophila ELMO/CED-12, an approximately 82 kDa protein with a pleckstrin homology (PH) and proline-rich domain, by interaction with the MBC SH3 domain. Mass spectrometry confirms the presence of an MBC/ELMO complex within the embryonic musculature at the time of myoblas...
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PMID: 18163987
PDF is available here.
PDF is available here.
Abstract
We studied temporal flight activity in three species of carpenter bees (genus Xylocopa) in relation to light intensities. X. leucothorax is diurnal, X. tenuiscapa is largely diurnal being only occasionally crepuscular, while X. tranquebarica is truly nocturnal. Occasional forays into dim light by X....
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PMID: 18094978
PDF is available here.
PDF is available here.
Abstract
The eyes of adult Phryssonotus platycephalus (Synxenidae) and Polyxenus lagurus (Polyxenidae) were investigated by light and electron microscopy. At each side of the head, various numbers of eye cups are situated on projections, the eye hills. The eye cups of P. platycephalus and P. lagurus are simi...
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PMID: 18089122
PDF is available here.
PDF is available here.
Abstract
We focus on the structure of compound eye ommatidia, and make an evolutionary analysis with functional arguments. We investigate possible routes of evolution that can be understood in terms of selection for improved visual function, and arrive at a number of conclusions that are discussed in the lig...
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PMID: 18089116
PDF is available here.
PDF is available here.
Abstract
We have studied the larvae of the sunburst diving beetle, Thermonectus marmoratus (Coleoptera: Dytiscidae), which are sophisticated visually oriented predators characterized by six elaborate stemmata on each side of the head and an associated large optic lobe. We used general neurohistological stain...
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PMID: 18089121
PDF is available here.
PDF is available here.
Developmental Cell (13)5 2007
Abstract
We have used the Drosophila eye and studied the formation of the morphogenetic furrow (MF), which is characterized by cells undergoing a synchronous apical constriction and apicobasal contraction. We show that this cell response relies on microtubules and F-actin enrichment within the apical domain...
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PMID: 17981140
PDF is available here.
PDF is available here.
Developmental Cell (13)5 2007
Abstract
We have used the Drosophila eye and studied the formation of the morphogenetic furrow (MF), which is characterized by cells undergoing a synchronous apical constriction and apicobasal contraction. We show that this cell response relies on microtubules and F-actin enrichment within the apical domain...
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PMID: 17981140
PDF is available here.
PDF is available here.
Developmental Biology (310)2 2007
Abstract
We used microarrays together with binding site analysis, quantitative real-time PCR, chromatin immunoprecipitation, genetics and in vivo expression analysis to identify new EYA-SO targets. In parallel, we examined the expression profiles of tissue expressing phosphatase mutant eya and found that red...
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PMID: 17714699
PDF is available here.
PDF is available here.
Developmental Dynamics (236)10 2007
Abstract
We have isolated a new allele of echinus, a gene known to control the patterning and number of interommatidial cells. We show that echinus displays defects in the rotation of ommatidia that are not evident until mid-pupal stages, and we propose that echinus action is that of opposing EGFR by an unkn...
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PMID: 17879315
PDF is available here.
PDF is available here.
Developmental Biology (309)2 2007
Abstract
We show that the shtd1 eye defects are due to a failure to establish and maintain G1 arrest in the morphogenetic furrow (MF) and a defect in progression through mitosis. The observed cell cycle defects were correlated with an accumulation of cyclin A (CycA) and String (Stg) proteins near the MF. Int...
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PMID: 17689521
PDF is available here.
PDF is available here.
Zoological Science (24)6 2007
Abstract
These results suggest that this cricket receives photoperiodic information through the compound eye, that a pair of the compound eyes is required for a complete photoperiodic response, and that interaction between bilateral circadian clocks may be also involved in the response....
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PMID: 17867862
PDF is available here.
PDF is available here.
Abstract
We show that Macrosoma heliconiaria possesses a superposition-type visual mechanism, characterized by long cylindrical crystalline cones, a lack of corneal processes, 8 constricted retinular sense cells, rhabdoms separated from the crystalline cones forming a translucent 'clear zone', and tight netw...
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PMID: 18089084
PDF is available here.
PDF is available here.
Abstract
I discuss the recent progress on dissecting the Nck/Dock signaling pathways in R-cell growth cones. These studies have identified additional key components of the Nck/Dock signaling pathways for linking the receptor signaling to the remodeling of the actin cytoskeleton in controlling growth-cone mot...
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PMID: 15951852
PDF is available here.
PDF is available here.
Journal of Physiology (256)2 1976
Abstract
Three mutations which eliminate specific types of photoreceptors in Drosophila were characterized. Of the eight photoreceptors in each facet, two mutations delete the outer six (R 1-6). The third eliminates R 7, one of the two central photoreceptors. Double mutants can be constructed in which only p...
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PMID: 16992509
PDF is available here.
PDF is available here.