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Effects of anti-pep...
Effects of anti-peptide antibodies against human M2 muscarinic receptors on the cAMP generating system in guinea pig ventricles.
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Wang, W Z (författare)
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Zhao, R R (författare)
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Zhu, L (författare)
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visa fler...
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Jin, X H (författare)
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- Hjalmarson, Åke, 1937 (författare)
- Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Wallenberg Laboratory
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- Fu, Michael, 1963 (författare)
- Gothenburg University,Göteborgs universitet,Wallenberglaboratoriet,Institutionen för invärtesmedicin,Wallenberg Laboratory,Institute of Internal Medicine
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visa färre...
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(creator_code:org_t)
- 1996
- 1996
- Engelska.
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Ingår i: Blood pressure. Supplement. - 0803-8023. ; 3, s. 22-4
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- The effects of anti-peptide antibodies (Ab) against the second extracellular loop of human muscarinic receptor-2 on the cAMP generating system in guinea pig ventricles were studied. These effects were compared with those of the muscarinic receptor agonist carbachol (Carb). It was shown that: (1) both Carb and Ab were able to inhibit the isoproterenol (Iso)-stimulated cAMP production of ventricles in a dose-dependent manner. Carb at 2 microM, 10 microM and 50 microM decreased Iso-stimulated cAMP production by 8.0 +/- 1.1, 15.8 +/- 1.2 and 28.4 +/- 1.7%, respectively; whereas Ab at 50 nM, 100 nM and 400 nM decreased it by 5.8 +/- 0.4, 16.8 +/- 1.4 and 30.6 +/- 2.5%, respectively. (2) Both Carb and Ab could also inhibit the basal cAMP content of ventricles significantly. Carb at 10 microM and Ab at 100 nM decreased it by 46.9 +/- 4.2% and 60.2 +/- 4.6%, respectively. (3) The inhibitory effects of both Ab and Carb on Iso-stimulated cAMP production were significantly prevented by atropine at 1.5 microM. (4) The inhibitory effect of Ab at 100 nM was almost completely abolished by the peptide (700 nM) used as immunogen. These findings suggest that the antibodies exhibit a stimulatory muscarinic activity similar to carbachol in the inhibitory modulation of cAMP production.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Microbiology in the medical area (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Cell- och molekylärbiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Cell and Molecular Biology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Fysiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Physiology (hsv//eng)
Nyckelord
- Animals
- Antibodies
- immunology
- pharmacology
- Cell Membrane
- drug effects
- metabolism
- Cyclic AMP
- metabolism
- Guinea Pigs
- Heart Ventricles
- metabolism
- ultrastructure
- Humans
- Receptor
- Muscarinic M2
- Receptors
- Muscarinic
- immunology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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