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1.
Anorexia: occurrence, pathophysiology, and possible causes in parasitic infections.
Symons, L E.
Adv Parasitol ; 24: 103-33, 1985.
Article in English | MEDLINE | ID: mdl-3904344

Subject(s)
Anorexia/etiology , Feeding and Eating Disorders/etiology , Parasitic Diseases/complications , Animals , Anorexia/physiopathology , Appetite , Helminthiasis/complications , Humans , Malabsorption Syndromes/physiopathology , Parasitic Diseases/physiopathology , Proteins/metabolism , Protozoan Infections/complications , Reference Values , Satiation
2.
Plasma zinc and inappetence in sheep infected with Trichostrongylus colubriformis.
Symons, L E.
J Comp Pathol ; 93(4): 547-50, 1983 Oct.
Article in English | MEDLINE | ID: mdl-6580296

ABSTRACT

The concentration of zinc in plasma before and after the occurrence of inappetence was measured in sheep infected with Trichostrongylus colubriformis and in uninfected animals fed freely or pair-fed with the infected group. Infection reduced mean food consumption to about one-third of that of the sheep fed ad libitum, half becoming completely anorexic. Plasma zinc concentrations in the infected sheep were reduced by 17 per cent whereas they were unchanged in the uninfected groups.


Subject(s)
Feeding and Eating Disorders/veterinary , Sheep Diseases/blood , Trichostrongyloidiasis/veterinary , Trichostrongylosis/veterinary , Zinc/blood , Animals , Feeding and Eating Disorders/blood , Feeding and Eating Disorders/etiology , Humans , Sheep , Trichostrongylosis/blood , Trichostrongylosis/complications
3.
Intestinal protein synthesis in guinea pigs infected with Trichostrongylus colubriformis.
Symons, L E; Jones, W O.
Int J Parasitol ; 13(3): 309-12, 1983 Jun.
Article in English | MEDLINE | ID: mdl-6874230

Subject(s)
Intestine, Large/metabolism , Intestine, Small/metabolism , Protein Biosynthesis , Trichostrongyloidiasis/metabolism , Trichostrongylosis/metabolism , Animals , Guinea Pigs , Male , Organ Size
4.
Protein synthesis in the whole body, liver, skeletal muscle and kidney cortex of lambs infected by the nematode Trichostrongylus colubriformis.
Jones, W O; Symons, L E.
Int J Parasitol ; 12(4): 295-301, 1982 Aug.
Article in English | MEDLINE | ID: mdl-7118372

Subject(s)
Protein Biosynthesis , Sheep Diseases/metabolism , Trichostrongyloidiasis/veterinary , Trichostrongylosis/veterinary , Albumins/biosynthesis , Animals , Kidney Cortex/metabolism , Liver/metabolism , Muscle Proteins/biosynthesis , Muscles/metabolism , Sheep , Trichostrongylosis/metabolism
5.
Distribution of 14C-L-leucine on organs and tissues of guinea pigs infected with Trichostrongylus colubriformis.
Symons, L E; Jones, W O.
Int J Parasitol ; 11(3): 229-33, 1981 Jun.
Article in English | MEDLINE | ID: mdl-7275478

Subject(s)
Leucine/metabolism , Proteins/metabolism , Trichostrongyloidiasis/metabolism , Trichostrongylosis/metabolism , Animals , Guinea Pigs , Intestinal Mucosa/metabolism , Kinetics , Liver/metabolism , Male , Muscles/metabolism , Skin/metabolism
6.
Cholecystokinin and anorexia in sheep infected by the intestinal nematode Trichostrongylus colubriformis.
Symons, L E; Hennessy, D R.
Int J Parasitol ; 11(1): 55-8, 1981 Feb.
Article in English | MEDLINE | ID: mdl-6939677

Subject(s)
Anorexia/veterinary , Cholecystokinin/metabolism , Feeding and Eating Disorders/veterinary , Intestinal Diseases, Parasitic/veterinary , Sheep Diseases/metabolism , Trichostrongyloidiasis/veterinary , Trichostrongylosis/veterinary , Animals , Anorexia/etiology , Anorexia/parasitology , Cholecystokinin/blood , Female , Humans , Intestinal Diseases, Parasitic/complications , Intestine, Small/metabolism , Sheep , Trichostrongylosis/complications , Trichostrongylosis/metabolism
7.
Epithelia cell mitosis and morphology in worm-free regions of the intestines of the rat infected by Nippostrongylus brasiliensis.
Symons, L E.
J Parasitol ; 64(5): 958-9, 1978 Oct.
Article in English | MEDLINE | ID: mdl-722472

Subject(s)
Intestines/pathology , Nematode Infections/pathology , Animals , Colon/pathology , Epithelial Cells , Ileum/pathology , Intestinal Mucosa/pathology , Jejunum/pathology , Male , Mitosis , Nippostrongylus , Rats
8.
Experimental foot-rot, wool growth and body mass.
Symons, L E.
Aust Vet J ; 54(7): 362-3, 1978 Jul.
Article in English | MEDLINE | ID: mdl-708337

Subject(s)
Body Weight , Foot Rot/physiopathology , Sheep Diseases/physiopathology , Wool/growth & development , Animals , Female , Male , Sheep
9.
Protein metabolism. 5. Trichostrongylus colubriformis: changes of host body mass and protein synthesis in guinea pigs with light to heavy infections.
Symons, L E; Jones, W O.
Exp Parasitol ; 44(1): 7-13, 1978 Feb.
Article in English | MEDLINE | ID: mdl-627277

Subject(s)
Body Weight , Liver/metabolism , Muscle Proteins/biosynthesis , Protein Biosynthesis , Trichostrongyloidiasis/physiopathology , Animals , Eating , Guinea Pigs , Male , Trichostrongyloidiasis/metabolism
10.
Protein metabolism. 6. Trichostrongylus colubriformis: skeletal protein catabolism in primary and secondary infections of the guinea pig.
Jones, W O; Symons, L E.
Exp Parasitol ; 44(1): 92-9, 1978 Feb.
Article in English | MEDLINE | ID: mdl-627280

Subject(s)
Muscle Proteins/metabolism , Trichostrongyloidiasis/metabolism , Animals , Creatinine/urine , Eating , Guinea Pigs , Male , Methylhistidines/urine , Trichostrongyloidiasis/urine
11.
Protein metabolism. IV. Altered protein synthesis in hosts infected with Eimeria tenella or bacteria compared to synthesis in hosts infected with intestinal nematodes.
Symons, L E; Jones, W O.
Exp Parasitol ; 42(1): 194-202, 1977 Jun.
Article in English | MEDLINE | ID: mdl-862704

Subject(s)
Coccidiosis/metabolism , Foot Rot/metabolism , Liver/metabolism , Muscles/metabolism , Protein Biosynthesis , Yersinia Infections/metabolism , Animals , Chickens , DNA/metabolism , Guinea Pigs , Male , Nitrogen , Polyribosomes/metabolism , RNA/metabolism , Sheep
12.
Scanning electron microscopy of the jejunum of the rat infected by the nematode Nippostrongylus brasiliensis.
Symons, L E.
Int J Parasitol ; 6(2): 107-11, 1976 Apr.
Article in English | MEDLINE | ID: mdl-944168

Subject(s)
Ancylostomatoidea , Hookworm Infections/pathology , Jejunum/ultrastructure , Nippostrongylus , Animals , Epithelial Cells , Epithelium/ultrastructure , Male , Nippostrongylus/ultrastructure
13.
RNA metabolism in the guinea pig infected with the nematode Trichostrongylus colubriformis.
Jones, W O; Symons, L E.
Exp Mol Pathol ; 21(3): 363-70, 1974 Dec.
Article in English | MEDLINE | ID: mdl-4430344

Subject(s)
RNA/metabolism , Trichostrongyloidiasis/metabolism , Animals , DNA/metabolism , DNA-Directed RNA Polymerases/metabolism , Guinea Pigs , Liver/metabolism , Muscles/metabolism , Tritium , Uridine/metabolism
14.
Basal metabolic rate and lipid and liver glycogen in mice infected by the nematode Nematospiroides dubius.
Symons, L E; Jones, W O.
Int J Parasitol ; 4(3): 301-5, 1974 Jun.
Article in English | MEDLINE | ID: mdl-4850732

Subject(s)
Hookworm Infections/metabolism , Lipid Metabolism , Liver Glycogen/metabolism , Animals , Basal Metabolism , Body Weight , Carbon Dioxide/analysis , Carbon Radioisotopes , Glucose/administration & dosage , Glucose/metabolism , Injections, Intraperitoneal , Male , Mice
15.
Protein metabolism. 3. Relationship between albumin metabolism and elevated liver protein synthesis in the guinea pig infected with Trichostrongylus colubriformis.
Symons, L E; Jones, W O; Steel, J W.
Exp Parasitol ; 35(3): 492-502, 1974 Jun.
Article in English | MEDLINE | ID: mdl-4826985

Subject(s)
Intestinal Mucosa/metabolism , Liver/metabolism , Protein Biosynthesis , Serum Albumin/metabolism , Trichostrongyloidiasis/metabolism , Administration, Oral , Amino Acids/metabolism , Animals , Body Weight , Carbon Radioisotopes , Chromium Radioisotopes , Culture Media , Feces/analysis , Guinea Pigs , Iodine Radioisotopes , Larva , Leucine/metabolism , Male , Methods , Ribosomes/metabolism , Serum Albumin/analysis , Trichostrongyloidea , Trichostrongyloidiasis/etiology
16.
Protein metabolism. 2. Protein turnover, synthesis, and muscle growth in suckling, young, and adult mammals infected with nematospiroides dubius or Trichostrongylus colubriformis.
Symons, L E; Jones, W O.
Exp Parasitol ; 32(3): 335-42, 1972 Dec.
Article in English | MEDLINE | ID: mdl-4630691

Subject(s)
Hookworm Infections/metabolism , Muscle Proteins/metabolism , Muscles/metabolism , Proteins/metabolism , Trichostrongyloidiasis/metabolism , Age Factors , Animals , Body Weight , Carbon Isotopes , DNA/biosynthesis , Guinea Pigs , Leucine/metabolism , Liver/metabolism , Male , Methionine/metabolism , Muscle Proteins/biosynthesis , Protein Biosynthesis , RNA/biosynthesis , Radioisotopes , Rats , Selenium , Statistics as Topic , Whole-Body Counting
17.
Mechanism of fat malabsorption in rats infected with Nippostrongylus brasiliensis.
Gallagher, N D; Playoust, M R; Symons, L E.
Gut ; 12(12): 1007-10, 1971 Dec.
Article in English | MEDLINE | ID: mdl-5157129

ABSTRACT

Long-chain fatty acid absorption in rats with a jejunal lesion similar to that which is found in adult coeliac disease has been studied. Neither changes in the solubility of the fatty acid in the intestinal lumen nor histological abnormalities of the villous epithelium accounted for the malabsorptive state. Evidence was obtained from studies in vivo of a disturbance in the intramucosal esterification of long-chain fatty acid. Assay of the activity of the microsomal enzymes responsible for the conversion of fatty acid to triglyceride revealed that this pathway was defective in the parasitized animals.


Subject(s)
Dietary Fats/metabolism , Hookworm Infections/metabolism , Malabsorption Syndromes/metabolism , Animals , Celiac Disease/metabolism , Epithelium/metabolism , Fatty Acids/metabolism , Humans , Intestinal Mucosa/metabolism , Jejunum/metabolism , Microsomes/enzymology , Rats , Solubility , Triglycerides/metabolism
18.
Jejunal malabsorption in the rat infected by the nematode Nippostrongylus brasiliensis.
Symons, L E; Gibbins, J R; Jones, W O.
Int J Parasitol ; 1(2): 179-87, 1971 Sep.
Article in English | MEDLINE | ID: mdl-5156164

Subject(s)
Hookworm Infections/complications , Jejunum/metabolism , Malabsorption Syndromes/etiology , Animals , Carbon Isotopes , Epithelial Cells , Epithelium/metabolism , Glucose/metabolism , Histidine/metabolism , Hookworm Infections/metabolism , Hookworm Infections/pathology , Intestinal Mucosa/metabolism , Jejunum/pathology , Malabsorption Syndromes/metabolism , Malabsorption Syndromes/pathology , Male , Methionine/metabolism , Microscopy, Electron , Mitochondria/metabolism , Oxygen Consumption , Palmitic Acids/metabolism , Rats , Serum Albumin, Bovine , Sodium Chloride/metabolism , Sulfobromophthalein/metabolism
19.
Protein metabolism. 1. Incorporation of 14C-L-leucine into skeletal muscle and liver proteins of mice and guinea pigs infected with Nematospiroides dubius and Trichostrongylus colubriformis.
Symons, L E; Jones, W O.
Exp Parasitol ; 29(2): 230-41, 1971 Apr.
Article in English | MEDLINE | ID: mdl-5556289

Subject(s)
Leucine/metabolism , Liver/metabolism , Muscle Proteins/biosynthesis , Muscles/metabolism , Protein Biosynthesis , Trichostrongyloidiasis/metabolism , Adenosine Triphosphate/analysis , Animals , Body Weight , Carbon Isotopes , Centrifugation, Density Gradient , DNA/analysis , Feeding Behavior , Guinea Pigs , Half-Life , Injections, Intraperitoneal , Liver/analysis , Male , Mice , Muscles/analysis , RNA/analysis , RNA, Ribosomal/analysis , Time Factors
20.
Protein digestion in intestinal nematode infections.
Symons, L E.
Gut ; 11(11): 980, 1970 Nov.
Article in English | MEDLINE | ID: mdl-5531119

Subject(s)
Digestion , Intestinal Diseases, Parasitic/metabolism , Nematode Infections/metabolism , Proteins/metabolism , Animals , Intestinal Absorption , Mice , Rats , Sheep , Sheep Diseases/metabolism
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