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Celem pracy była ocena spożycia składników odżywczych u dzieci z niedoborem masy ciała i wzrostu. Ocenie poddano 46 dzieci ( 30 dziewcząt i 16 chłopców) hospitalizowanych w Klinice Pediatrii z powodu niedoboru masy ciała, i niższego niż rówieśnicy wzrostu, po wykluczeniu innych przyczyn chorobowych. Ol każdego dziecka zbierano 3-krotnie 24 godzinny wywiad żywieniowy. Wywiady poddano analizie za pomocą programu komputerowego DIETA 2.O., a wyniki porównywano z normami żywieniowymi. Oceny rozwoju somatycznego dzieci dokonano za pomocą pomiarów antropometrycznych i wykorzystaniem siatek centylowych Analiza uzyskanych wyników wykazała szereg nieprawidłowości w sposobie żywienia dzieci. Dzienna racja pokarmowa dzieci charakteryzowała się niskim spożyciem energii i większości składników odżywczych w stosunku do zalecanych norm żywieniowych, co mogło być jedną z istotnych przyczyn niedostatecznego stanu odżywienia i zaburzeń rozwoju somatycznego.
The present work aimed studying the effect of magnesium and manganese on the type of transport of ascorbic acid in absorption from the alimentary tract of hens. The research has defined contents of vitamin C by the colorymetric method according to Roe and Kuether. This part of the study has presented the influence of magnesium and manganese on the absorption of vitamin C by the method of perfused intestinal loop in vivo according to Mykkanen and Nys. Magnesium and manganese radically increased the absorption of ascorbic acid from the jejunum and caecum of chickens. The inversely proportional dependence between the concentration of elements in the solution and the amount of vitamin C absorbed has been proved. A substantial increase of absorption of vitamin C in the jejunum from 2.60 mg/l/cm2/60 min to 3.83 mg/l/cm2/60 min and in the caecum from 4.10 mg/1/ /cm2/60 min. to 5.15 mg/l/cm2/60 min appeared. Likewise manganese increased the absorption of vitamin C in the jejunum from 2.60 mg/l/cm2/60 min to 4.51 mg/l/cm2/60 min and in the caecum from 4.10 mg/l/cm2/60 min. to 7.41 mg/l/cm2/60 min. In order to study the effect of magnesium and manganese on the type of transport of ascorbic acid ouabain was used as a blocker of active transport. The magnesium and manganese increased absorption by intensification of active transport and passive diffusion. Almost all of the vitamin C which was absorbed from perfused liquid passed across the intestinal barrier to blood. The results presented in the paper may be used in feeding, prophylaxis and treatment of domestic animals and people.
The study aimed at making a thorough investigation of the influence of magnesium on the absorption of vitamin C and, conversely, the influence of ascorbic acid on the absorption of magnesium from the alimentary tracts of hens. The influence of magnesium on the absorption of vitamin C and conversely influence of ascorbic acid on the absorption of magnesium by the method of perfused intestinal loop „in vivo” according to Mykkanen and Nys. Magnesium radically increased the absorption of ascorbic acid from the jejunum and caecum of chickens. The inversely proportional dependence between the concentration of magnesium in the solution and the amount of vitamin C absorbed has been proved. A substantial increase of absorption of vitamin C in the jejunum from 2,60 mg/l/cm²/60 min to 3.83 mg/l/cm²/60 min and in the caecum 4.10 mg/l/cm²/60 min to 3.83 mg/l/cm²/60 min and in the caecum from 4.10 mg/l/cm²/60 min to 5.15 mg/l/cm²/60 min was determined. Ascorbic acid, however, decreased the absorption of magnesium. Vitamin C decreased the absorption of magnesium in the jejunum from 1.83 mg/l/cm²/60 min to 1.17 mg/l/cm²/60 min and in the caecum from 3.63 mg/l/cm²/60 min to 2.21 mg/l/cm²/60 min. Ascorbic acid in perfused fluid was marked by Roe-Kuether method. In time, along with the flow of perfused fluid the conditions for absorption changed.; pH increased and amount of vitamin C and magnesium absorbed by intestine decreased. This phenomenon is caused by a natural process connected with the saturation of the intestine wall with the vitamin concentrated during the earlier intense absorption, the increased level of ascorbic acid in the blood, as well as the loss of energetic substances and the secretion of enzymes, electrolytes and mucin in to intestinal lumen. The results obtained in the paper may by used in feeding, prophylaxis and treatment of domestic animals and people.
The purpose of the studies was to make a thorough examination of interaction between ascorbic acid and manganese in realtion to their absorption from the alimentary tract of hens. This seems to be a new issue and there are no publications on the subject in the literature available. The research has presented the influence of magnesium on the absorption of vitamin C and, vice versa, the influence of ascorbic acid on the absorption of magnesium by the method of perfused intestinal loop „in vivo” according to Mykkanen and Nys. Manganese radically increased the absorption of ascorbic acid from jejunum and caecum of chickens. The inversely proportional dependence between the concentration of mangenese in the solution and the amount of vitamin C absorbed has been proved. A substantial increase of absorption of vitamin C in the jejunum from 2.60 mg/ /l/cm²/60 min to 4.51 mg/l/cm²/60 min and in the caecum from 4.10 mg/l/cm²/60 min to 7.41 mg/l/cm²/60 min was determined. Ascorbic acid, however, decreased the absortion of manganese. Vitamin C decreased the absorption of manganese in the jejunum from 1.08 mg/l/cm²/60 min to 0.63 mg/l/cm² 60 min and in the caecum from 2.69 mg/l/cm²/60 min to 0.92 mg/l/cm²/60 min. Ascorbic acid in perfused fluid was marked by the Roe-Kuether method. In time, along with the flow of perfused fluid, the conditions of absorption changed: pH increased and the amount of vitamin C and manganase absorbed by intestine was decreased. This phenomenon is caused by a natural process connected with the saturation of the intestine wall with the vitamin concentrated during the earlier intense absorption, the increased level of ascorbic acid in the blood, as well as the secretion into the light of the jejunum enzymes, electrolites and mucin. The results can be useful for nutrition, preventative care and medical therapy of domestic animals and people.
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