Oral bioavailability and sex specific tissue partitioning of quantum dots in fathead minnows, Pimephales promelas

2015 ◽  
Vol 2 (6) ◽  
pp. 583-593
Author(s):  
C. M. Lavelle ◽  
J. H. Bisesi ◽  
M. A. Hahn ◽  
K. J. Kroll ◽  
T. Sabo-Attwood ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Tissue Distribution ◽  
Oral Bioavailability ◽  
Pimephales Promelas ◽  
Oral Exposure ◽  
Fathead Minnows ◽  
Tissue Partitioning ◽  
Specific Tissue ◽  
Surface Chemistries

Quantum dots with different surface chemistries display a sex-specific tissue distribution following oral exposure in fathead minnows, an agastric fish.

Development of apical pits in chloride cells of the gills of Pimephales promelas after chronic exposure to acid water

1983 ◽  
Vol 41 ◽  
pp. 462-463
Author(s):  
Richard L. Leino ◽  
Jon G. Anderson ◽  
J. Howard McCormick
Keyword(s):  
Confidence Interval ◽  
Chronic Exposure ◽  
Lake Superior ◽  
Pimephales Promelas ◽  
Chloride Cells ◽  
Fathead Minnows ◽  
Secondary Lamellae ◽  
Untreated Water ◽  
Water Ph ◽  
Flow Through

Groups of 12 fathead minnows were exposed for 129 days to Lake Superior water acidified (pH 5.0, 5.5, 6.0 or 6.5) with reagent grade H2SO4 by means of a multichannel toxicant system for flow-through bioassays. Untreated water (pH 7.5) had the following properties: hardness 45.3 ± 0.3 (95% confidence interval) mg/1 as CaCO3; alkalinity 42.6 ± 0.2 mg/1; Cl- 0.03 meq/1; Na+ 0.05 meq/1; K+ 0.01 meq/1; Ca2+ 0.68 meq/1; Mg2+ 0.26 meq/1; dissolved O2 5.8 ± 0.3 mg/1; free CO2 3.2 ± 0.4 mg/1; T= 24.3 ± 0.1°C. The 1st, 2nd and 3rd gills were subsequently processed for LM (methacrylate), TEM and SEM respectively.Three changes involving chloride cells were correlated with increasing acidity: 1) the appearance of apical pits (figs. 2,5 as compared to figs. 1, 3,4) in chloride cells (about 22% of the chloride cells had pits at pH 5.0); 2) increases in their numbers and 3) increases in the % of these cells in the epithelium of the secondary lamellae.

Acidification effects on macroinvertebrates and fathead minnows (Pimephales promelas) in outdoor experimental channels

1983 ◽  
Vol 17 (1) ◽  
pp. 47-63 ◽  
Author(s):  
James A. Zischke ◽  
John W. Arthur ◽  
Kathleen J. Nordlie ◽  
Roger O. Hermanutz ◽  
Douglas A. Standen ◽  
...  
Keyword(s):  
Pimephales Promelas ◽  
Fathead Minnows

The cell adhesion molecule M-cadherin is specifically expressed in developing and regenerating, but not denervated skeletal muscle

Development ◽  
1993 ◽  
Vol 117 (4) ◽  
pp. 1409-1420 ◽  
Author(s):  
R. Moore ◽  
F.S. Walsh
Keyword(s):  
Skeletal Muscle ◽  
Tissue Distribution ◽  
Cell Adhesion Molecule ◽  
Muscle Denervation ◽  
Regulatory Factor ◽  
Myogenic Regulatory Factor ◽  
Adult Skeletal Muscle ◽  
Specific Tissue ◽  
Alpha Actin

The spatiotemporal distribution of M-cadherin mRNA has been determined by in situ hybridization in the mouse embryo and in adult skeletal muscle following experimental regeneration and denervation. M-cadherin mRNA is highly tissue specific and is found only in developing skeletal muscle. In contrast, N-cadherin mRNA has a broader tissue distribution in the embryo, being found on both neural elements and skeletal and cardiac muscle. M-cadherin is expressed in the myotomes shortly after they form, along with the myogenic regulatory factor myogenin. M-cadherin is expressed in muscles derived from the myotomes and is detected in forelimb bud precursor cells at embryonic day 11.5. In the latter case M-cadherin expression appears co-ordinately with that of myogenin and cardiac alpha-actin. Shortly before birth, M-cadherin expression is down regulated. M-cadherin can, however, be re-expressed following experimental regeneration of skeletal muscle. Here M-cadherin is transiently expressed on regenerating myoblasts but not myotubes. Following muscle denervation no evidence was found for re-expression of M-cadherin under conditions where there was strong expression of the nicotinic acetylcholine receptor on myofibres. The highly specific tissue distribution and unique developmental profile distinguishes M-cadherin from other cadherins and suggests a role in cell surface events during early myogenesis.

INFLUENCE OF MULTIPLE WATER-QUALITY CHARACTERISTICS ON COPPER TOXICITY TO FATHEAD MINNOWS (PIMEPHALES PROMELAS)

2004 ◽  
Vol 23 (12) ◽  
pp. 2900 ◽  
Author(s):  
Katherine L. Sciera ◽  
J. Jeffery Isely ◽  
Joseph R. Tomasso ◽  
Stephen J. Klaine
Keyword(s):  
Water Quality ◽  
Pimephales Promelas ◽  
Copper Toxicity ◽  
Quality Characteristics ◽  
Fathead Minnows
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