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  • 1
    Digitale Medien
    Digitale Medien
    Humoral suppression inTrypanosoma cruzi infection in relation to the timing of antigen presentation (1980)
    Springer
    Parasitology research 64 (1980), S. 85-93 
    Details
    ISSN: 1432-1955
    Schlagwort(e): Trypanosoma cruzi ; Immunosuppression ; Immunenhancement ; Mice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract (CBA×C57 B1/10)F1 mice infected intraperitoneally with 100 parasites ofTrypanosoma cruzi strain Y developed an infection with acute and chronic phases. Humoral suppression to sheep red blood cells was evident in both phases but enhancement of the response was achieved only at the beginning of the infection. A mitogen secreted by the parasite could explain both phenomenons.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00927059
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Unimpaired delayed type hypersensitivity reactions in mice infected withTrypanosoma cruzi strain Y (1980)
    Springer
    Parasitology research 61 (1980), S. 179-185 
    Details
    ISSN: 1432-1955
    Schlagwort(e): Trypanosoma cruzi ; Delayed hypersensitivity ; Mice
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Abstract Delayed type hypersensitivity reactions (DTH) to DNFB in C3H (susceptible) and (CBA×C57B1/10)F1 (resistant) mice were not impaired inTrypanosoma cruzi strain Y infections. Mice were infected IP with 100 parasites and sensitized or challenged 11 days after infection at the peak of parasitaemia. DTH reactions were found to be enhanced in C3H infected mice.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00925463
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  • 3
    Digitale Medien
    Digitale Medien
    Distribution, pathways and reactions to drug treatment of nerves with neuropeptide Y- and pancreatic polypeptide-like immunoreactivity in the guinea-pig digestive tract (1983)
    Springer
    Cell & tissue research 234 (1983), S. 71-92 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Enteric nervous system ; Intestine ; Noradrenergic nerves ; Pancreatic polypeptide ; Neuropeptide Y ; Neuropeptides
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary Pancreatic polypeptide-like immunoreactivity (PPLI) has been localized in nerves of the guinea-pig stomach and intestine with the use of antibodies raised against avian, bovine and human pancreatic polypeptide (PP), the C-terminal hexapeptide of mammalian PP, and against the related peptide, NPY. Each of the antibodies revealed the same population of neurones. Reactive cell bodies were found in both myenteric (5% of all neurones) and submucous ganglia (26% of all neurones) of the small intestine, and varicose processes were observed in the myenteric plexus, circular muscle, mucosa and around arterioles. The nerves were unaffected by bilateral subdiaphragmatic truncal vagotomy, but the staining of the periarterial nerves disappeared after treatment of animals with reserpine or 6-hydroxydopamine and was also absent after mesenteric nerves had been cut and allowed to degenerate. Vascular nerves showing immunoreactivity for dopamine it-hydroxylase and PPLI had the same distribution. It is concluded that PPLI is located in periarterial noradrenergic nerves. However, other noradrenergic nerves in the intestine do not show PPLI, and PPLI also occurs in nerves that are not noradrenergic. Analysis of changes in the distribution of terminals after microsurgical lesions of pathways in the small intestine showed that processes of myenteric PP-nerve cells provide terminals in the underlying circular muscle and in myenteric ganglia up to about 2 mm more anal. Submucous PP-cell bodies provide terminals to the mucosa.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00217403
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  • 4
    Digitale Medien
    Digitale Medien
    Choline acetyltransferase- and peptide immunoreactivity of submucous neurons in the small intestine of the guinea-pig (1984)
    Springer
    Cell & tissue research 237 (1984), S. 329-336 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Choline acetyltransferase ; Cholecystokinin ; Neuropeptide Y ; Somatostatin ; Substance P ; Intestine, small ; Submucous ganglia ; Guinea-pig
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The peptides cholecystokinin (CCK), neuropeptide Y (NPY), somatostatin (SOM), substance P (SP) and vasoactive intestinal peptide (VIP), and the synthesizing enzyme for acetylcholine, choline acetyltransferase (ChAT) were localized immunohistochemically in nerve cell bodies of the submucous ganglia in the small intestine of the guinea-pig. VIP-like immunoreactivity was found in 45% of submucous neurons. ChAT immunoreactivity was observed in a separate group of nerve cells, which made up 54% of the total population. There were three subsets of neurons immunoreactive for ChAT: (1) ChAT neurons that also contained immunoreactivity for each of the peptides CCK, SOM and NPY, representing 29% of all submucous neurons; (2) ChAT neurons that also contained SP-like immunoreactivity, representing 11% of all submucous neurons, and (3) ChAT cells that did not contain any detectable amount of the peptides that were localized in this study.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00217152
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