Helicobacter species binding to the human gastric mucosa

Helicobacter ◽  
2021 ◽  
Author(s):  
Rita Matos ◽  
Hugo Santos Sousa ◽  
Jorge Nogueiro ◽  
Ana Magalhães ◽  
Celso A. Reis ◽  
...  
Keyword(s):  
Gastric Mucosa ◽  
Human Gastric Mucosa

H. pylori down-regulates TRAIL (DR4)-receptors in the human gastric mucosa, a possible mechanism for chronic persistence

2001 ◽  
Vol 120 (5) ◽  
pp. A81-A81
Author(s):  
B NEU ◽  
R RAD ◽  
M NEUHOFER ◽  
C TRAUTWEIN ◽  
M GERHARD ◽  
...  
Keyword(s):  
Gastric Mucosa ◽  
Human Gastric Mucosa ◽  
H Pylori

The suppresive effect of a fermented milk containing lactobacilli on Helicobacter pylori in human gastric mucosa

2001 ◽  
Vol 120 (5) ◽  
pp. A590-A590 ◽  
Author(s):  
M PARK ◽  
J KIM ◽  
H JUNG ◽  
I SONG ◽  
J LEE
Keyword(s):  
Helicobacter Pylori ◽  
Gastric Mucosa ◽  
Fermented Milk ◽  
Human Gastric Mucosa

The Fine Structure of Normal Human Gastric Mucosa

1964 ◽  
Vol 47 (3) ◽  
pp. 269-290 ◽  
Author(s):  
Clinton B. Lillibridge
Keyword(s):  
Fine Structure ◽  
Gastric Mucosa ◽  
Human Gastric Mucosa ◽  
Normal Human

scholarly journals Purification and Properties of Acid Deoxyribonucleases of Human Gastric Mucosa and Cervix Uteri

1974 ◽  
Vol 249 (12) ◽  
pp. 3884-3889 ◽  
Author(s):  
Masayoshi Yamanaka ◽  
Yoriaki Tsubota ◽  
Motoaki Anai ◽  
Koji Ishimatsu ◽  
Makoto Okumura ◽  
...  
Keyword(s):  
Gastric Mucosa ◽  
Cervix Uteri ◽  
Human Gastric Mucosa ◽  
Purification And Properties

scholarly journals Relation of Helicobacter pylori to the human gastric mucosa in chronic gastritis of the antrum.

Gut ◽  
1990 ◽  
Vol 31 (11) ◽  
pp. 1230-1236 ◽  
Author(s):  
L L Thomsen ◽  
J B Gavin ◽  
C Tasman-Jones
Keyword(s):  
Helicobacter Pylori ◽  
Gastric Mucosa ◽  
Chronic Gastritis ◽  
Human Gastric Mucosa

Succinic and Malic Oxidase in Gastric Hydrochloric Acid Production

1956 ◽  
Vol 187 (3) ◽  
pp. 427-431 ◽  
Author(s):  
Joseph J. Vitale ◽  
Oscar M. Jankelson ◽  
Patricia Connors ◽  
D. Mark Hegsted ◽  
Norman Zamcheck
Keyword(s):  
Gastric Mucosa ◽  
Guinea Pig ◽  
Succinic Dehydrogenase ◽  
Titratable Acidity ◽  
Spectrophotometric Analysis ◽  
Parietal Cells ◽  
Human Gastric Mucosa ◽  
City Hospital ◽  
Malic Dehydrogenase ◽  
Oxidase System

Effect of histamine on the activity of succinic oxidase and malic dehydrogenase was studied in guinea pig and human gastric mucosa. Human tissue was obtained through the surgical services of the Boston City Hospital. Control value for the succinic oxidase system of the proximal half of the guinea pig stomach was approximately 480 ( Qo2 (N) (µl O2/mg nitrogen/hr.)). After histamine, this value rose to 550 in 30 minutes with a simultaneous rise in titratable acidity of the stomach contents. Animals fasted for 72 hours had a Qo2 (N) of approximately 500 and after histamine a Qo2 (N) of 700 was observed. Spectrophotometric analysis of succinic dehydrogenase and cytochrome oxidase activities, two of the major components of the succinic oxidase system, revealed that both components are increased following histamine administration. Malic dehydrogenase, however, was not affected by histamine treatment. Succinic dehydrogenase was demonstrated by histochemical localization and was concentrated below the superficial mucous layer where parietal cells were abundant. Succinic oxidase activity of human gastric mucosa was demonstrable only in those specimens containing abundant parietal cells. This study confirms the view that HCl production by parietal cells is associated with aerobic metabolism and is perhaps under enzymatic control. The study suggests that the succinic oxidase system may be involved in the production or secretion of HCl.

Naproxen selectively increases matrix metalloproteinase 1 (3.4.24.7) in human gastric mucosa

2003 ◽  
Vol 124 (4) ◽  
pp. A175
Author(s):  
Julie A. Smith ◽  
Andy C. Rose ◽  
Martin W. James ◽  
James R. Bebb ◽  
Clare T. Atherton ◽  
...  
Keyword(s):  
Gastric Mucosa ◽  
Matrix Metalloproteinase ◽  
Human Gastric Mucosa ◽  
Matrix Metalloproteinase 1

Nitric oxide inhibits gastric acid secretion by increasing intraparietal cell levels of cGMP in isolated human gastric glands

2005 ◽  
Vol 289 (6) ◽  
pp. G1061-G1066 ◽  
Author(s):  
Anna Berg ◽  
Stefan Redéen ◽  
Magnus Grenegård ◽  
Ann-Charlott Ericson ◽  
Sven Erik Sjöstrand
Keyword(s):  
Nitric Oxide ◽  
Gastric Mucosa ◽  
Acid Secretion ◽  
Gastric Acid Secretion ◽  
Gastric Acid ◽  
Enzymatic Digestion ◽  
Human Gastric Mucosa ◽  
Gastric Glands ◽  
Oxyntic Mucosa ◽  
No Donor

We have previously identified cells containing the enzyme nitric oxide (NO) synthase (NOS) in the human gastric mucosa. Moreover, we have demonstrated that endogenous and exogenous NO has been shown to decrease histamine-stimulated acid secretion in isolated human gastric glands. The present investigation aimed to further determine whether this action of NO was mediated by the activation of guanylyl cyclase (GC) and subsequent production of cGMP. Isolated gastric glands were obtained after enzymatic digestion of biopsies taken from the oxyntic mucosa of healthy volunteers. Acid secretion was assessed by measuring [14C]aminopyrine accumulation, and the concentration of cGMP was determined by radioimmunoassay. In addition, immunohistochemistry was used to examine the localization of cGMP in mucosal preparations after stimulation with the NO donor S-nitroso- N-acetylpenicillamine (SNAP). SNAP (0.1 mM) was shown to decrease acid secretion stimulated by histamine (50 μM); this effect was accompanied by an increase in cGMP production, which was histologically localized to parietal cells. The membrane-permeable cGMP analog dibuturyl-cGMP (db-cGMP; 0.1–1 mM) dose dependently inhibited acid secretion. Additionally, the effect of SNAP was prevented by preincubating the glands with the GC inhibitor 4 H-8-bromo-1,2,4-oxadiazolo[3,4-d]benz[b][1,4]oxazin-1-one (10 μM). We therefore suggest that NO in the human gastric mucosa is of physiological importance in regulating acid secretion. Furthermore, the results show that NO-induced inhibition of gastric acid secretion is a cGMP-dependent mechanism in the parietal cell involving the activation of GC.

Helicobacter pylori eradication attenuates oxidative stress in human gastric mucosa

2001 ◽  
Vol 96 (6) ◽  
pp. 1758-1766 ◽  
Author(s):  
Brigitte Pignatelli ◽  
Brigitte Bancel ◽  
Martin Plummer ◽  
Shinya Toyokuni ◽  
Louis-Marc Patricot ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Helicobacter Pylori ◽  
Gastric Mucosa ◽  
Human Gastric Mucosa ◽  
Helicobacter Pylori Eradication
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