Zobrazeno 1 - 10
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pro vyhledávání: '"Hans Komnick"'
Autor:
Hans Komnick, Gregor Kirfel
Publikováno v:
Archives of Insect Biochemistry and Physiology. 40:183-193
In order to evaluate whether dietary long-chain fatty acids were differentially absorbed, Aeshna cyanea larvae received 5 μl oral doses containing combinations of two radiolabeled fatty acids at nearly equal radioactive and nmolar concentrations: (1
Autor:
Birgit Weiher, Hans Komnick
Publikováno v:
Archives of Insect Biochemistry and Physiology. 36:273-293
Digestion and absorption of phosphatidylcholine by Aeshna cyanea larvae were studied in vivo and in vitro with the isolated digestive juice and isolated midgut. The experiments were performed with stable ether analogues (1-alkyl-2-acyl-,1,2-dialkyl p
Autor:
Dieter Wachtmann, Hans Komnick
Publikováno v:
Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology. 110:65-74
In contrast with unsaturated fatty acids, ingestions of long-chain saturated fatty acids by Aeshna cyanea larvae failed to induce an accumulation of lipid droplets in the intestinal absorptive cells, so that it remained questionable whether they were
Autor:
Dieter Wachtmann, Hans Komnick
Publikováno v:
Insect Biochemistry and Molecular Biology. 24:319-328
(1) In vitro and in vivo studies on the midgut, haemolymph, fat body and Malpighian tubules fo Aeshna cyanea nymphs using [1- 14 C]palmityl alcohol with and without unlabelled oleic acid revealed that free fatty alcohol was readily absorbed from the
Autor:
Hans Komnick, Rainer Fischer
Publikováno v:
Insect Biochemistry and Molecular Biology. 22:793-801
Activity of peroxisomal acyl-CoA oxidase was measured in homogenates of Aeshna cyanea midguts and found to be reversibly influenced by long-term fasting and refeeding. The enzyme was immunocytochemically colocalized with catalase in the peroxisomes o
Autor:
Rudolf Bauerfeind, Hans Komnick
Publikováno v:
Journal of Insect Physiology. 38:185-198
Immunocytochemistry using affinity-purified polyclonal antilipophorin revealed extracellular and intracellular locations of lipophorin in the fat body of dragonfly larvae. Lipophorin was associated with the external surface of the superficial and lat
Autor:
Rudolf Bauerfeind, Hans Komnick
Publikováno v:
Journal of Insect Physiology. 38:147-160
Radioactive oleic acid orally infused into dragonfly larvae ( Aeshna cyanea ) was recovered in the haemolymph in the esterified form as diacylglycerol which was transported by lipophorin. Radioactive diacylglycerol was released in vitro into the surr
Autor:
Rudolf Bauerfeind, Hans Komnick
Publikováno v:
Journal of Insect Physiology. 37:179-191
Dragonfly larvae are able to hydrolyse wax esters in the midgut lumen and to absorb both the fatty acid and the fatty alcohol moieties. The fatty acid is partly used for the synthesis of triglyceride and partly, together with the fatty alcohol, for t
Publikováno v:
Comparative biochemistry and physiology. Part B, Biochemistrymolecular biology. 114(3)
The isolated digestive juice of Aeshna cyanea larvae hydrolysed trioleoylglycerol preferentially at the terminal 1 and 3 positions, yielding 1, 2-dioleoylglycerol as first intermediate. Hydrolysis continued to 1- and 2-monooleoylglycerol as second in
Autor:
Wolfgang Honer, Hans Komnick
Publikováno v:
Tissuecell. 22(2)
The cell junctions of the notochord of Xenopus laevis tadpoles were examined with the electron microscope using thin sections, lanthanum tracer experiments, and freeze-fracture replicas. Both the peripheral and vacuolated cells of the notochord are c