Geology topics

J.F. Patton

Publications and source records attributed to J.F. Patton.

3 recordsLinked to original sources

USGS1980

Effects of petroleum hydrocarbons on hepatic function in the duck

1. The indocyanine green dye clearance test for hepatic function was determined in mallard ducks before and during the chronic ingestion (7 months) of representative paraffinic or aromatic petroleum hydrocarbons (PH). 2. No mortality or visible symptoms of toxicity occurred in any of the tests. Ingestion of 4000 ppm aromatic PH produced significant increases in liver (25%), plasma clearance of indocyanine green (33%) and hepatic blood flow (30%). 3. Although the aromatics elicited a greater hepatic stress response than the paraffins, the ducks tolerated high concentrations of PH for extended periods.

Comparative Biochemistry and Physiology, Part C: C↗

USGS1980

Quantification of petroleum-type hydrocarbons in avian tissue

Methods were developed for the analysis of 16 hydrocarbons in avian tissue. Mechanical extraction with pentane was followed by clean-up on Florisil and Silicar. Residues were determined by gas—liquid chromatography and gas—liquid, chromatography—mass spectrometry. The method was applied to the analysis of liver, kidney, fat, and brain tissue of mallard ducks ( Anas platyrhynchos ) fed a mixture of hydrocarbons. Measurable concentrations of all compounds analyzed were present in all tissues except brain. Highest concentrations were in fat.

Journal of Chromatography A↗

USGS1978

Indocyanine green: A test of hepatic function and a measure of plasma volume in the duck

1. The exponential removal of ICG from the plasma by the mallard duck liver made possible the measurement of fractional dye clearance (K), plasma volume (PV) and plasma clearance (PC). 2. Values obtained for K (14.9%/min), PV (39.2 ml/kg) and PC (5.8 ml/min per kg) agreed with those obtained by other techniques used in a number of species. 3. Sex did not affect the removal of ICG by the liver. However, increases in K, PV and PC were noted in hen mallards in laying condition. 4. The data should prove useful as baseline values for physiological and pathological studies on the avian liver

Comparative Biochemistry and Physiology, Part A: P↗