scholarly journals Relationship Between Steroid Hormones and Helicobacter pylori

10.5772/27163 ◽  
2011 ◽  
Author(s):  
Hirofumi Shimomura
Keyword(s):  
Helicobacter Pylori ◽  
Steroid Hormones

scholarly journals Steroid hormones as bactericidal agents to Helicobacter pylori

2011 ◽  
Vol 318 (1) ◽  
pp. 68-75 ◽  
Author(s):  
Kouichi Hosoda ◽  
Hirofumi Shimomura ◽  
Shunji Hayashi ◽  
Kenji Yokota ◽  
Yoshikazu Hirai
Keyword(s):  
Helicobacter Pylori ◽  
Steroid Hormones

Ultrastructural Cytopiasmic Changes of Adrenal Cortex During Pregnancy

1969 ◽  
Vol 27 ◽  
pp. 298-299
Author(s):  
T. M. Murad ◽  
Karen Israel ◽  
Jack C. Geer
Keyword(s):  
Adrenal Gland ◽  
Steroid Hormones ◽  
Adrenal Cortex ◽  
Lipid Droplets ◽  
Plasma Cholesterol ◽  
Adrenal Steroids ◽  
Dynamic Changes ◽  
Cortical Cells ◽  
Acetyl Coenzyme A ◽  
Adrenal Cortical Cells

Adrenal steroids are normally synthesized from acetyl coenzyme A via cholesterol. Cholesterol is also shown to enter the adrenal gland and to be localized in the lipid droplets of the adrenal cortical cells. Both pregnenolone and progesterone act as intermediates in the conversion of cholesterol into steroid hormones. During pregnancy an increased level of plasma cholesterol is known to be associated with an increase of the adrenal corticoid and progesterone. The present study is designed to demonstrate whether the adrenal cortical cells show any dynamic changes during pregnancy.

Smooth endoplasmic reticulum in perfusion and immersion-fixed Leydig cells

1990 ◽  
Vol 48 (3) ◽  
pp. 82-83
Author(s):  
R.T.F. Bernard ◽  
R.H.M. Cross
Keyword(s):  
Endoplasmic Reticulum ◽  
Electron Microscope ◽  
Steroid Hormones ◽  
Transmission Electron Microscope ◽  
Leydig Cells ◽  
Smooth Endoplasmic Reticulum ◽  
Random Mixture ◽  
Transmission Electron

Smooth endoplasmic reticulum (SER) is involved in the biosynthesis of steroid hormones, and changes in the organisation and abundance of this organelle are regularly used as indicators of changes in the level of steroidogenesis. SER is typically arranged as a meshwork of anastomosing tubules which, with the transmission electron microscope, appear as a random mixture of cross, oblique and longitudinal sections. Less commonly the SER appears as swollen vesicles and it is generally suggested that this is an artefact caused during immersion fixation or during immersion of poorly-perfused tissue.During a previous study of the Leydig cells of a seasonally reproducing bat, in which tissue was fixed by immersion, we noted that tubular SER and vesicular SER often occured in adjacent cells and sometimes in the same cell, and that the abundance of the two types of SER changed seasonally. We came to doubt the widelyheld dogma that vesicular SER was an artefact of immersion fixation and set out to test the hypothesis that the method of fixation does not modify the ultrastructure of the SER.

The rod-to-coccoid body transformation in cultures of Helicobacter pylori

1990 ◽  
Vol 48 (3) ◽  
pp. 626-627
Author(s):  
A. R. Crooker ◽  
W. G. Kraft ◽  
T. L. Beard ◽  
M. C. Myers
Keyword(s):  
Helicobacter Pylori ◽  
Growth Cycle ◽  
Negative Bacterium ◽  
Body Formation ◽  
Coccoid Form ◽  
Spiral Form ◽  
Prolonged Culture ◽  
H Pylori ◽  
Upper Gastrointestinal

Helicobacter pylori is a microaerophilic, gram-negative bacterium found in the upper gastrointestinal tract of humans. There is strong evidence that H. pylori is important in the etiology of gastritis; the bacterium may also be a major predisposing cause of peptic ulceration. On the gastric mucosa, the organism exists as a spiral form with one to seven sheathed flagella at one (usually) or both poles. Short spirals were seen in the first successful culture of the organism in 1983. In 1984, Marshall and Warren reported a coccoid form in older cultures. Since that time, other workers have observed rod and coccal forms in vitro; coccoid forms predominate in cultures 3-7 days old. We sought to examine the growth cycle of H. pylori in prolonged culture and the mode of coccoid body formation.

DYSPEPSIA SYNDROME AND HELICOBACTER PYLORI INFECTION IN END STAGE RENAL FAILURE

2000 ◽  
Vol 15 (12) ◽  
pp. H2-H2
Author(s):  
IS Mertasudira ◽  
JR Saketi ◽  
A. Djumhana ◽  
J. Widjojo ◽  
SA Abdurachman
Keyword(s):  
Renal Failure ◽  
Helicobacter Pylori ◽  
Helicobacter Pylori Infection ◽  
End Stage Renal Failure ◽  
End Stage

Mouse model of gastric infection with cytotoxin-expressing strain of Helicobacter pylori in studying of pathogenesis of chronic gastric ulcer

1998 ◽  
Vol 13 (11-s4) ◽  
pp. S178-S184 ◽  
Author(s):  
PETER KONTUREK ◽  
TOMASZ BRZOZOWSKI ◽  
STANISLAW KONTUREK ◽  
ELZBIETA KARCZEWSKA ◽  
ROBERT PAJDO ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Gastric Ulcer ◽  
Mouse Model ◽  
Chronic Gastric Ulcer

HEMATEMESIS AND MELENA IN BABY WITH HELICOBACTER PYLORI INFECTION

2000 ◽  
Vol 15 (12) ◽  
pp. H10-H11
Author(s):  
Budi Purnomo ◽  
Eva J. Soeleman ◽  
Hadjat S. Digdowirogo ◽  
Hartati N. Soehardjo
Keyword(s):  
Helicobacter Pylori ◽  
Helicobacter Pylori Infection
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