Search: onr:"swepub:oai:DiVA.org:uu-104362" >
Acute effects of He...
Acute effects of Helicobacter pylori extracts on gastric mucosal blood flow in the mouse
-
- Henriksnäs, Johanna (author)
- Uppsala universitet,Integrativ Fysiologi
-
- Atuma, Christer (author)
- Uppsala universitet,Integrativ Fysiologi
-
- Phillipson, Mia (author)
- Uppsala universitet,Integrativ Fysiologi
-
show more...
-
- Sandler, Stellan (author)
- Uppsala universitet,Institutionen för medicinsk cellbiologi
-
- Engstrand, Lars (author)
- Karolinska Institutet
-
- Holm, Lena (author)
- Uppsala universitet,Integrativ Fysiologi
-
show less...
-
(creator_code:org_t)
- Baishideng Publishing Group Inc. 2009
- 2009
- English.
-
In: World Journal of Gastroenterology. - : Baishideng Publishing Group Inc.. - 1007-9327 .- 2219-2840. ; 15:2, s. 219-225
- Related links:
-
https://doi.org/10.3...
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.3...
-
http://kipublication...
-
show less...
Abstract
Subject headings
Close
- AIM: To investigate the mechanisms underlying the reduction in gastric blood flow induced by a luminal water extract of Helicobacter pylori (HPE).METHODS: The stomachs of isoflurane-anesthetized mice were exteriorized, and the mucosal surface exposed. Blood flow was measured with the laser-Doppler technique, and systemic arterial blood pressure monitored. C57BL/6 mice were exposed to water extract produced from H pylori strain 88-23. To investigate the role of a nerve- or iNOS-mediated pathway, we used intraluminal lidocaine and iNOS-/- mice. Blood flow response to the endogenous nitric oxide synthase inhibitor asymmetric dimethyl arginine (ADMA) was also assessed.RESULTS: In wild-type mice, HPE decreased mucosal blood flow by approximately 30%. This reduction was abolished in iNOS-deficient mice, and by pre-treatment with lidocaine. Luminally applied ADMA resulted in reduction in blood flow similar to that observed in wild-type mice exposed to HPE.CONCLUSION: A H pylori water extract reduces gastric mucosal blood flow acutely through iNOS- and nerve-mediated pathways.
Keyword
- Gastric mucosal blood flow
- In vivo
- Laser-Doppler flowmetry
- Mice
- Helicobacter pylori
- MEDICINE
- MEDICIN
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database