Effects of high fat diets on worm recovery, growth and distribution of Echinostoma caproni in ICR mice

1996 ◽  
Vol 70 (4) ◽  
pp. 351-354 ◽  
Author(s):  
J.E. Sudati ◽  
A. Reddy ◽  
B. Fried

AbstractThe effects of high fat diets (HFDs) on the host–parasite relationship of Echinostoma caproni in ICR mice were studied. Two HFDs were used, one consisting of a customized high fat diet (CHFD) with 45% lipid in the form of cottonseed oil, and the second consisting of an egg yolk diet (EYD) from domestic hens' eggs, with 31% lipid. Controls for both diets consisted of mice fed a standard laboratory diet with 5% lipid. Mice were each fed 25 cysts of E. caproni by stomach tube and necropsied 2, 3 and 4 weeks postinfection (PI). The weight of mice on the CHFD declined significantly compared to mice on the control diet, but there was no significant decline in weight of mice fed EYD compared to the controls. Worm recoveries from mice on both HFDs were significantly less than those from control hosts. There was a significant decline in worm dry weight, body area and uterine egg counts in worms on HFD compared to those on the control diet. Worms from hosts on HFD were located more anteriad in the gut than those recovered from mice on the control diet.

1997 ◽  
Vol 71 (4) ◽  
pp. 351-354 ◽  
Author(s):  
J.E. Sudati ◽  
F. Rivas ◽  
B. Fried

AbstractThe effects of a high protein diet on the host-parasite relationship of Echinostoma caproni in ICR mice were studied. The customized high protein diet (CHPD) contained 64% casein as a source of protein. The control diet consisted of a standard laboratory diet containing 23% casein as a source of protein. Mice were each fed 25 cysts of E. caproni by stomach tube and necropsied 2, 3, 4 and 5 weeks postinfection. The weight of mice on the CHPD did not differ significantly from mice on the control diet. Worm recoveries were also unaffected by the high protein diet. There was a significant decline in worm dry weight, body area and uterine egg counts in worms from mice on the CHPD compared with those on the control diet. Worms from hosts on the CHPD were located more posteriad in the gut than those recovered from mice on the control diet. Changes in the mouse diet adversely affected E. caproni maturation and growth, possibly by altering the immediate host mucosal environment and making it less conducive to worm development.


2019 ◽  
Vol 5 (3) ◽  
pp. 307-313 ◽  
Author(s):  
Jian-Ping Wang ◽  
Ren-Yong Cui ◽  
Xue-Mei Ding ◽  
Shi-Ping Bai ◽  
Qiu-Feng Zeng ◽  
...  

1998 ◽  
Vol 66 (2) ◽  
pp. 491-499 ◽  
Author(s):  
J. J. Pascual ◽  
C. Cervera ◽  
E. Blas ◽  
J. Fernandez-Carmona

AbstractThe influence of high fat diets on several production traits of primiparous and multiparous rabbit does was studied in 246 lactations from a total of 61 crossbreed rabbit does (Californian × New Zealand). Starting with a control diet (diet C) with 26 g ether extract (EE) per kg dry matter (DM), two isoenergetic diets were formulated adding fat from vegetable sources up to 99 g EE per kg DM (diet V) or animal sources up to 117 g EE per kg DM (diet A). Digestible energy/digestible protein ratio (DE/DP) was maintained between 82 and 87 kj/g. Food intake decreased with high fat diets compared with the control diet during gestation (P ‘lt; 0·001), which implied a decrease in the DE intake (P < 0·01 and P < 0·05 for primiparous and multiparous does, respectively). Fat addition did not affect food intake of primiparous does during lactation (101·8,106·9 and 103·7 g DM per day per kg live weight (M)0·75 for C, V and A diets, respectively) but increased the DE intake (1121 kj/day per kg M°0·75 for C diet cf. 1325 for V and 1264 for A diets; P < 0·01) and reduced does' weight losses at the end of lactation (F > 0·05). However, multiparous does on C diet showed a greater food intake during the last 2 weeks of lactation (110·6 for C diet v. 101·5 and 98·9 g DM per day per kg M0·75 for V and A diets, respectively; P < 0·001). High fat diets improved significantly the productive parameters at the 21st day of lactation: increasing litter size (P < 0·01 for multiparous does) and weight (P < 0·01 and P < 0·001 for primiparous and multiparous does, respectively) and decreasing the food conversion ratio (P < 0·001). An increase of dietary fat content decreased solid food intake of litters during the last 2 weeks of lactation (P < 0·01 and P < 0·001 for primiparous and multiparous does, respectively) but only affected their solid DE intake slightly. In conclusion, high fat diets seem to improve the productivity of lactating does and their corporal condition during the first lactation.


2001 ◽  
Vol 75 (1) ◽  
pp. 77-80 ◽  
Author(s):  
H.L. Simpkins ◽  
B. Fried

The effects of a diet deficient in the B vitamins on infectivity, growth, and distribution of Echinostoma caproni in ICR mice were studied. The vitamin-deficient diet (experimental) was isocaloric to the control diet but lacked the B vitamins. Thirty-six female, 6- to 8-week-old ICR mice were each infected with 25 metacercarial cysts. From the day of infection to the day of necropsy, 18 mice were fed the experimental diet and the remaining mice received the control diet. Equal numbers of experimental and control mice were necropsied at 2, 3 and 4 weeks postinfection (p.i.). Mice on the experimental diet showed a significant loss in body weight between 2 and 4 weeks p.i. There was no significant difference in worm recovery at 2 to 4 weeks p.i. from mice on either diet. Worms from hosts on the experimental diet were more dispersed and located more posteriad in the small intestine than those from mice on the control diet. Worm dry weight was significantly less in hosts on the experimental diet at all weeks p.i. compared with that of hosts on the control diet. The body area of worms on the experimental diet was significantly less at 2 and 3 weeks p.i. than that of worms on the control diet. An isocaloric diet deficient in the B vitamins had a detrimental effect on the growth of E. caproni in ICR mice.


1999 ◽  
Vol 68 (1) ◽  
pp. 151-162 ◽  
Author(s):  
J. J. Pascual ◽  
C. Cervera ◽  
E. Blas ◽  
J. Fernández-Carmona

AbstractExperiment I. One hundred and twenty-five lactations from 88 New Zealand × Californian does were used to study the influence of high fat diets on the performance and milk yield of multiparous rabbit does in two high productivity situations: housed in hot conditions (minimum temperature above 24°C) with eight pups (group H8), or housed in warm conditions (minimum temperature under 21 °C) with 11 pups (group W11). Starting from a control diet (diet C) with 26 g ether extract (ЕЕ) per kg dry matter (DM), two isoenergetic diets were formulated adding fat from vegetable sources up to 99 g ЕЕ per kg DM (diet V) or animal sources up to 117 g ЕЕ per kg DM (diet A). The lactating does showed similar food daily intakes (⋍105 g DM per kg), therefore digestible energy intake of does on high fat diets was significantly higher (P < 0·001). The addition of f at to the diets increased (P < 0·001) milk yield of does (+21 and 24 g/day for diets V and A, respectively) and litter weight at weaning (P < 0·05), and decreased the number of pups replaced (P < 0·01) during lactation. Group H8 does had significantly lower DM intakes, litter growth rates and milk production levels than group Wll does (P < 0·001).Experiment 2. The effect of these diets on milk composition was determined in 62 lactations from 28 multiparous rabbit does, in which litter size was maintained at eight pups. Milk samples were collected manually on the 7th, 21st and 28th days of lactation. Milk of does given high fat diets, especially diet A, had higher fat and energy contents (P < 0·001) and a lower protein content (P < 0·001) than those given diet C. Milk of does given diet A had a greater DM content than those given the diets С or V (P < 0·001). There was a correlation between the fatty acid composition of milk and dietary fat. The proportion of odd chain fatty acids in the milk fat was lower for does given diet V (P < 0·05) than those given diet A. In conclusion, high fat diets were related to a higher milk yield and energy content of milk, allowing a higher litter weight gain and a lower mortality of sucking pups.


1984 ◽  
Vol 217 (3) ◽  
pp. 863-864 ◽  
Author(s):  
A A B Badawy ◽  
C J Morgan ◽  
N R Davis ◽  
A Dacey

1999 ◽  
Vol 73 (2) ◽  
pp. 167-169 ◽  
Author(s):  
C. Rosario ◽  
B. Fried

The effects of a protein-free diet on the host–parasite relationship of Echinostoma caproni in ICR mice were studied. The experimental diet was a customized protein-free diet (PFD) in pellet form containing 0% protein. The control diet consisted of a standard laboratory diet containing 23% casein as a source of protein. A total of 24 mice were each infected with 15 metacercarial cysts of E. caproni. Twelve mice were placed on the experimental diet (experimentals) and the remaining mice (controls) were placed on the control diet. Experimental and control mice were necropsied at 2, 3, and 4 weeks postinfection (p.i.). The weight of mice on the PFD was markedly lower than that of mice on the control diet. The length and circumference of the small intestine of infected mice on the PFD were significantly lower than those of the controls at 3 weeks p.i. (Student's t-test; P < 0.05). Worm recoveries from mice on the PFD were significantly lower than those of the controls at 3 weeks p.i. There was a significant decline in worm body area in worms from the mice on the PFD compared with those on the control diet at 2, 3, and 4 weeks p.i. Worm dry weights from mice on the PFD were significantly lower than those on the control diet at 2 weeks p.i. Worms from hosts on the PFD were located more posteriad in the gut than those recovered from mice on the control diet. The findings suggest that the PFD contributes to growth retardation of E. caproni in ICR mice.


1984 ◽  
Vol 217 (3) ◽  
pp. 865-865
Author(s):  
D N Brindley ◽  
I A MacDonald ◽  
C A Marsden

1984 ◽  
Vol 3 (1) ◽  
pp. 93-102 ◽  
Author(s):  
R. J. Jaeger ◽  
I. L. Cote ◽  
A. E. Rogers ◽  
E. H. Silver ◽  
S. Szabo

The influence of diet on the acute toxicity (lethality) and distribution of glutathione as measured by tissue nonprotein sulfhydryl (NPSH) concentration following acrylonitrile (ACN) treatment was studied. The tissue distribution of radiolabeled (14C) acrylonitrile or its radioactive metabolites was also determined. The diets tested were a standard laboratory rat chow; a casein-based, complete diet; and 2 diets high in saturated fat content that were either lipotrope deficient or lipotrope supplemented. The latter 2 diets were associated with decreased weight gain in the absence of ACN and increased lethality after orally administratered ACN. The increase in lethality, while most pronounced in the group fed the lipotrope-deficient, high-fat diet, was also seen in rats fed the purified control diet. The high-fat diets were associated with increases in brain and liver NPSH concentrations (mg NPSH/100 g body weight). Following oral administration of 1–14C-ACN, blood contained the highest specific activity. In terms of fraction of administered dose, liver was found to contain the highest total fraction. In the tissues measured, a majority of radioactivity appeared bound to trichloroacetic acid (TCA) insoluble components. The sequence of tissue activity (nCi 14C per g or ml) was as follows: blood > stomach > liver, duodenum, lung, kidney > brain > adrenal. While diet affected toxicity, it did not modify this general ranking.


1994 ◽  
Vol 71 (06) ◽  
pp. 755-758 ◽  
Author(s):  
E M Bladbjerg ◽  
P Marckmann ◽  
B Sandström ◽  
J Jespersen

SummaryPreliminary observations have suggested that non-fasting factor VII coagulant activity (FVII:C) may be related to the dietary fat content. To confirm this, we performed a randomised cross-over study. Seventeen young volunteers were served 2 controlled isoenergetic diets differing in fat content (20% or 50% of energy). The 2 diets were served on 2 consecutive days. Blood samples were collected at 8.00 h, 16.30 h and 19.30 h, and analysed for triglycerides, FVII coagulant activity using human (FVII:C) or bovine thromboplastin (FVII:Bt), and FVII amidolytic activity (FVIPAm). The ratio FVII:Bt/FVII:Am (a measure of FVII activation) increased from fasting levels on both diets, but most markedly on the high-fat diet. In contrast, FVII: Am (a measure of FVII protein) tended to decrease from fasting levels on both diets. FVII:C rose from fasting levels on the high-fat diet, but not on the low-fat diet. The findings suggest that high-fat diets increase non-fasting FVII:C, and consequently may be associated with increased risk of thrombosis.


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