Search Results - "Calder, A G"

Is D-methionine bioavailable to the dairy cow? by Lapierre, H, Holtrop, G, Calder, A G, Renaud, J, Lobley, G E

“…Rumen-protected forms of Met contain an equimolar mixture of the D- and L-isomers. Only L-Met can be directly used for protein synthesis, but it is unclear how…”
Get more information

Absorption of 2-hydroxy-4-methylthiobutyrate and conversion to methionine in lambs by Lobley, G E, Wester, T J, Calder, A G, Parker, D S, Dibner, J J, Vázquez-Añón, M

“…Absorption and metabolism of the Met hydroxy analog 2-hydroxy-4-methylthiobutyrate (HMTBA) was examined using stable isotopes. In the first trial,…”
Get more information

Amino acid exchange by the mammary gland of lactating goats when histidine limits milk production by Bequette, B J, Hanigan, M D, Calder, A G, Reynolds, C K, Lobley, G E, MacRae, J C

“…The aim of this study was to monitor amino acid (AA) exchange kinetics of the mammary gland in response to an imposed limitation on His supply for milk…”
Get more information

Hepatic detoxification of ammonia in the ovine liver: possible consequences for amino acid catabolism by Lobley, G. E., Connell, A., Lomax, M. A., Brown, D. S., Milne, E., Calder, A. G., Farningham, D. A. H.

“…The effects of either low (25 μmol/min) or high (235 μmol/min) infusion of NH4Cl into the mesenteric vein for 5 d were determined on O2 consumption plus urea…”
Get full text

Hepatic metabolism of 2-hydroxy-4-methylthiobutyrate in growing lambs by Wester, T J, Vázquez-Añón, M, Dibner, J, Parker, D S, Calder, A G, Lobley, G E

“…This study was undertaken to determine how, and where, 2-hydroxy-4-methylthiobutyrate (HMTBA) can augment Met metabolism in lambs. Four lambs (initial body…”
Get more information

Subclinical infection with the nematode Trichostrongylus colubriformis increases gastrointestinal tract leucine metabolism and reduces availability of leucine for other tissues by Yu, F, Bruce, L. A, Calder, A. G, Milne, E, Coop, R. L, Jackson, F, Horgan, G. W, MacRae, J. C

“…Gastrointestinal (GI) tract leucine metabolism was measured in 6- to 9-mo-old lambs subjected to trickle infection with Trichostrongylus colubriformis larvae…”
Get full text

Hepatic protein synthesis in the sheep : effect of intake as monitored by use of stable-isotope-labelled glycine, leucine and phenylalanine by CONNELL, A, CALDER, A. G, ANDERSON, S. E, LOBLEY, G. E

“…Rates of protein synthesis for the liver, plasma albumin and total plasma protein were quantified in sheep either offered a supra-maintenance intake or fasted…”
Get full text

Effect of plasma insulin and branched-chain amino acids on skeletal muscle protein synthesis in fasted lambs by Wester, T. J., Lobley, G. E., Birnie, L. M., Crompton, L. A., Brown, S., Buchan, V., Calder, A. G., Milne, E., Lomax, M. A.

“…The increase in fractional rate of protein synthesis (Ks) in the skeletal muscle of growing rats during the transition from fasted to fed state has been…”
Get full text

Vascular sources of phenylalanine, tyrosine, lysine, and methionine for casein synthesis in lactating goats by Bequette, B J, Backwell, F R, Kyle, C E, Calder, A G, Buchan, V, Crompton, L A, France, J, MaCrae, J C

“…The contribution to casein biosynthesis of peptides derived from blood was examined in late lactation goats (254 to 295 d in milk). Ratios of mammary uptake of…”
Get more information

Effect of feed intake on amino acid transfers across the ovine hindquarters by Hoskin, S. O., Savary-Auzeloux, I. C., Calder, A. G., Zuur, G., Lobley, G. E.

“…Responses in variables of amino acid (AA) metabolism across peripheral tissues to feed intake were studied in six sheep (mean live weight 32 kg) prepared with…”
Get full text

The effects of breed and level of nutrition on whole-body and muscle protein metabolism in pure-bred Aberdeen Angus and Charolais beef steers by Lobley, G. E., Sinclair, K. D., Grant, C. M., Miller, L., Mantle, D., Calder, A. G., Warkup, C. C., Maltin, C. A.

“…Eighteen pure-bred steers (live weight 350 kg) from each of two breeds, Aberdeen Angus (AA) and Charolais (CH), were split into three equal groups (six animals…”
Get full text

Response of protein synthesis in human skeletal muscle to insulin: an investigation with L-[2H5]phenylalanine by McNurlan, M A, Essén, P, Thorell, A, Calder, A G, Anderson, S E, Ljungqvist, O, Sandgren, A, Grant, I, Tjäder, I, Ballmer, P E

“…The role of insulin in the regulation of muscle protein synthesis in adult humans has been investigated with intravenous infusion of insulin at levels…”
Get full text

Whole body protein metabolism in human pulmonary tuberculosis and undernutrition: evidence for anabolic block in tuberculosis by Macallan, D C, McNurlan, M A, Kurpad, A V, de Souza, G, Shetty, P S, Calder, A G, Griffin, G E

“…1. Differing patterns of protein metabolism are seen in wasting due to undernutrition and wasting due to chronic infection. 2. We investigated whole body…”
Get more information

Glutamine metabolism in ovine splanchnic tissues: effects of infusion of ammonium bicarbonate or amino acids into the abomasum by Nieto, R., Obitsu, T., Fernández-Quintela, A., Bremner, D., Milne, E., Calder, A. G., Lobley, G. E.

“…This study investigates the effects of increased NH3 or amino acid supply on glutamine utilisation and production by the splanchnic tissues of fed sheep. Six…”
Get full text

Stable isotope ratio analysis of leucine and ketoisocaproic acid in blood plasma by gas chromatography/mass spectrometry. Use of tertiary butyldimethylsilyl derivatives by Calder, A G, Smith, A

Get more information

Whole-body protein turnover from leucine kinetics and the response to nutrition in human immunodeficiency virus infection by Macallan, DC, McNurlan, MA, Milne, E, Calder, AG, Garlick, PJ, Griffin, GE

“…Whole-body protein metabolism was investigated in human immunodeficiency virus (HIV) infection by primed constant infusion of L-[1-13C]leucine in 8 control and…”
Get full text

Muscle and whole body metabolism after norepinephrine by Kurpad, A V, Khan, K, Calder, A G, Elia, M

“…The effect of an infusion of norepinephrine (0.42 nmol.kg-1.min-1) on energy metabolism in the whole body (using indirect calorimetry and the arteriovenous…”
Get full text

Effect of noradrenaline on glycerol turnover and lipolysis in the whole body and subcutaneous adipose tissue in humans in vivo by Kurpad, A, Khan, K, Calder, A G, Coppack, S, Frayn, K, Macdonald, I, Elia, M

“…1. The effect of infusion of noradrenaline (0.42 mumol min-1 kg-1) on the exchange of nonesterified fatty acids, glycerol and other metabolites across…”
Get more information

Measurement of albumin synthesis in humans: a new approach employing stable isotopes by Ballmer, P E, McNurlan, M A, Milne, E, Heys, S D, Buchan, V, Calder, A G, Garlick, P J

“…A new method for measuring albumin synthesis in humans with stable isotopes is presented. This can readily be applied in most clinical conditions, even when…”
Get full text

Quantitation of blood and plasma amino acids using isotope dilution electron impact gas chromatography/mass spectrometry with U-(13)C amino acids as internal standards by Calder, A G, Garden, K E, Anderson, S E, Lobley, G E

“…A method to quantitate blood and plasma amino acids by isotope dilution gas chromatography/mass spectrometry (GC/mS) is described. Samples were spiked with…”
Get full text