Fishes of Colorado

Ellis, M. M.

doi:10.5962/bhl.title.13752

Cited by 53 publications

(93 citation statements)

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“…The lack of an obvious Rho]-induced phenotype in the larval imaginal disc is not due to lack of expression of the transgene at this stage, as we have been able to detect its expression in the eye-imaginal discs of third instar larvae by Northern blotting and by in situ hybridization. Furthermore, other transgenes using this vector are well expressed at early stages of development (our unpublished results;Ellis et al, 1993). It is possible, however, that even higher levels of Rho] transgene expression may result in deleterious effects at earlier stages in development, since changes in cell shape occur even in the larval imaginal disc.…”

Section: Discussionmentioning

confidence: 85%

“…pGMR is a modified P element vector that contains five copies of a binding site for the transcription factor Glass located upstream of a TATA element (see Materials and methods). Expression from this promoter is initially restricted to all the cells of the eye-imaginal disc that are located posterior to the morphogenetic furrow (Ellis et al, 1993) and is maintained during later stages of eye development.…”

Section: Expression Of Rho Family Gtpases Is Widespread During Embryomentioning

confidence: 99%

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Characterization of rho GTPase family homologues in Drosophila melanogaster: overexpressing Rho1 in retinal cells causes a late developmental defect.

et al. 1995

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The rho family of GTPases has been implicated in regulating changes in cell morphology in response to extracellular signals. We have cloned three widely expressed members of this family from Drosophila melanogaster; a rho homologue (Rho1) and two rac homologues (Rac1 and Rac2). Flies harbouring a Rho1 transgene that is specifically expressed in the eye exhibit a dramatic dose dependent disruption of normal eye development. Flies bearing at least two copies of the transgene display a severe rough eye phenotype characterized by missing secondary and tertiary pigment cells, a substantial reduction in the number of photoreceptor cells and a grossly abnormal morphology of the rhabdomeres. Cell fate determination in the imaginal disc occurs normally and abnormalities become manifest late in pupariation, coincident with the phase when the cells undergo major morphological changes. This phenotype is modified by mutations at several other loci that have been implicated in signal transduction, but not by mutations in ras pathway components.

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Section: Discussionmentioning

confidence: 85%

Section: Expression Of Rho Family Gtpases Is Widespread During Embryomentioning

confidence: 99%

Characterization of rho GTPase family homologues in Drosophila melanogaster: overexpressing Rho1 in retinal cells causes a late developmental defect.

et al. 1995

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“…The Jordan party seined razorback sucker in the Uncompahgre and Gunnison rivers near Delta, CO. However, Ellis (1914) captured no razorback sucker in 1912 in either the Uncompahgre or the lower Gunnison rivers near Grand Junction, CO, but did collect three from the Colorado River near Grand Junction, which contrasted with his ready collection of other sucker species in the Uncompahgre and Gunnison rivers. Later, Chamberlain (1946) noted that razorback sucker were found only in the lower portion of the Gunnison River near its confluence with the Colorado River, which may have been the source of the fish.…”

Section: Hypothesis Of Historical Effects From Seleniummentioning

confidence: 52%

Hypothesis of Historical Effects From Selenium on Endangered Fish in the Colorado River Basin

Hamilton

1999

Human and Ecological Risk Assessment: An International Journal

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Anthropogenic selenium contamination of aquatic ecosystems was first associated with cooling reservoirs of coal-fired power plants in the late 1970s, and later with drainage water from agricultural irrigation activities in the 1980s. In the 1990s, selenium contamination has been raised as a concern in the recovery of currently endangered fish in the Colorado River system. Widespread contamination from seleniferous drain waters from agriculture has been documented in the upper and lower Colorado River basins. Historically, irrigation started in the upper Colorado River basin in the late 1880s. In the 1930s, selenium concentrations in various drains, tributaries, and major rivers in the upper and lower Colorado River basins were in the 100s and 1000s of µg/L. Native fish inhabiting large rivers such as the Colorado pikeminnow and razorback sucker were abundant before 1890, but became rare after 1910 to 1920, before the influence of mainstem reservoirs in the upper and lower Colorado River. A hypothesis is presented that selenium contamination of the tributaries and major rivers of the Colorado River basin in the 1890 to 1910 period caused the decline of the endangered fish and continues to inhibit their recovery.

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“…A comparative study of the biological activity of glycosylated and non-glycosylated prolactin was performed by the pigeon crop sac assay (21). Preparations were administered to 30 doves (1 0 birds in a group) in equal doses (10,20 and 40 pg, respectively). Intracutaneous injections (0.1 mL) were made in each side of the crop sac daily for 4 days.…”

Section: Methodsmentioning

confidence: 99%

Multiple forms of pituitary prolactin, a glycosylated form of porcine prolactin with enhanced biological activity

Pankov

Butnev

1986

International Journal of Peptide and Protein Research

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Three forms of prolactin differing in molecular weight (Mr 23 000, 25 000 and 50 000, respectively) and electrophoretic mobility have been isolated and purified from fresh‐frozen porcine pituitary glands. The prolactin form with Mr 25 000 is identified as a glycoprotein having an affinity to concanavalin A. The carbohydrate unit containing GlcN Ac3, GalNAc1, Man3, Fuc05, Gal04 is linked to asparagine at the 31 position. The amino acid composition and partial primary structure of the glycosylated prolactin are identical to those of the major prolactin form (Mr 23 000). Based on isoelectric focusing and non‐denaturing disc‐electrophoresis, the glycosylated prolactin appears more acidic than the major form. The glycosylated form of the hormone has 140% of the activity of the non‐glycosylated prolactin when measured by the pigeon crop sac assay. The new form accounts for 30–40% of the total monomeric prolactin in the porcine pituitary. The yield was 200 mg purified glycosylated prolactin from 1000g pituitary gland. The third form of hormone (Mr 50 000) was shown to be a disulphide linkéed prolactin dimer.

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Fishes of Colorado

Cited by 53 publications

References 0 publications

Characterization of rho GTPase family homologues in Drosophila melanogaster: overexpressing Rho1 in retinal cells causes a late developmental defect.

Characterization of rho GTPase family homologues in Drosophila melanogaster: overexpressing Rho1 in retinal cells causes a late developmental defect.

Hypothesis of Historical Effects From Selenium on Endangered Fish in the Colorado River Basin

Multiple forms of pituitary prolactin, a glycosylated form of porcine prolactin with enhanced biological activity

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