The effect of exogenous prostaglandin administration on tumor size and yield in Min/+ mice.

2.50
Hdl Handle:
http://hdl.handle.net/10541/86148
Title:
The effect of exogenous prostaglandin administration on tumor size and yield in Min/+ mice.
Authors:
Wilson, James W; Potten, Christopher S
Abstract:
This study set out to examine the effect of exogenous prostaglandin (PG) administration on tumor development in Min/+ mice. Mice were treated with the stable prostaglandin E2 analogue 16,16-dimethyl-PGE2 from 6-18 weeks of age. Mice were sacrificed, and tumor burden was assessed using morphometric techniques. Parameters measured were median tumor size, mean tumor size, the proportion of the area of the gastrointestinal mucosa covered with tumor, and the number of tumors per 1000 mm2 of gastrointestinal mucosa. In addition, proliferative and apoptotic indices were determined. These measurements were carried out for all regions of the small intestine (i.e., duodenum, jejunum, upper ileum, and lower ileum) and the large intestine (i.e., cecum and mid-colon/rectum). 16,16-Dimethyl-PGE2-treated animals showed a significant decrease in tumor burden (by approximately 50-70%), in comparison with those animals that were treated with vehicle alone (0.001% ethanol in 0.9% sterile saline), in all regions of the intestine (at P = 0.008 or better). This effect was contributed to by a reduction in the number of tumors (by approximately 20-50%) and a reduction in tumor size (by approximately 10-70%). An increase in tumor cell turnover was associated with this decrease in tumor burden, as determined by the changes in the levels of thymidine incorporation (significant at P = 0.003), apoptosis, and mitosis (nonsignificant).
Affiliation:
Section of Cell and Tumour Biology, Paterson Institute for Cancer Research, Manchester, United Kingdom. jwilson@picr.man.ac.uk
Citation:
The effect of exogenous prostaglandin administration on tumor size and yield in Min/+ mice. 2000, 60 (16):4645-53 Cancer Res.
Journal:
Cancer Research
Issue Date:
15-Aug-2000
URI:
http://hdl.handle.net/10541/86148
PubMed ID:
10969819
Type:
Article
Language:
en
ISSN:
0008-5472
Appears in Collections:
All Paterson Institute for Cancer Research

Full metadata record

DC FieldValue Language
dc.contributor.authorWilson, James Wen
dc.contributor.authorPotten, Christopher Sen
dc.date.accessioned2009-11-13T15:32:02Z-
dc.date.available2009-11-13T15:32:02Z-
dc.date.issued2000-08-15-
dc.identifier.citationThe effect of exogenous prostaglandin administration on tumor size and yield in Min/+ mice. 2000, 60 (16):4645-53 Cancer Res.en
dc.identifier.issn0008-5472-
dc.identifier.pmid10969819-
dc.identifier.urihttp://hdl.handle.net/10541/86148-
dc.description.abstractThis study set out to examine the effect of exogenous prostaglandin (PG) administration on tumor development in Min/+ mice. Mice were treated with the stable prostaglandin E2 analogue 16,16-dimethyl-PGE2 from 6-18 weeks of age. Mice were sacrificed, and tumor burden was assessed using morphometric techniques. Parameters measured were median tumor size, mean tumor size, the proportion of the area of the gastrointestinal mucosa covered with tumor, and the number of tumors per 1000 mm2 of gastrointestinal mucosa. In addition, proliferative and apoptotic indices were determined. These measurements were carried out for all regions of the small intestine (i.e., duodenum, jejunum, upper ileum, and lower ileum) and the large intestine (i.e., cecum and mid-colon/rectum). 16,16-Dimethyl-PGE2-treated animals showed a significant decrease in tumor burden (by approximately 50-70%), in comparison with those animals that were treated with vehicle alone (0.001% ethanol in 0.9% sterile saline), in all regions of the intestine (at P = 0.008 or better). This effect was contributed to by a reduction in the number of tumors (by approximately 20-50%) and a reduction in tumor size (by approximately 10-70%). An increase in tumor cell turnover was associated with this decrease in tumor burden, as determined by the changes in the levels of thymidine incorporation (significant at P = 0.003), apoptosis, and mitosis (nonsignificant).en
dc.language.isoenen
dc.subjectDuodenal Canceren
dc.subjectIleal Canceren
dc.subjectIntestinal Canceren
dc.subject.mesh16,16-Dimethylprostaglandin E2-
dc.subject.meshAnimals-
dc.subject.meshApoptosis-
dc.subject.meshCell Cycle-
dc.subject.meshCyclin-Dependent Kinase Inhibitor p21-
dc.subject.meshCyclins-
dc.subject.meshDuodenal Neoplasms-
dc.subject.meshFemale-
dc.subject.meshGenetic Predisposition to Disease-
dc.subject.meshIleal Neoplasms-
dc.subject.meshIntestinal Mucosa-
dc.subject.meshIntestinal Neoplasms-
dc.subject.meshMale-
dc.subject.meshMice-
dc.subject.meshMice, Inbred C57BL-
dc.subject.meshMitosis-
dc.subject.meshThymidine-
dc.titleThe effect of exogenous prostaglandin administration on tumor size and yield in Min/+ mice.en
dc.typeArticleen
dc.contributor.departmentSection of Cell and Tumour Biology, Paterson Institute for Cancer Research, Manchester, United Kingdom. jwilson@picr.man.ac.uken
dc.identifier.journalCancer Researchen

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