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IMP3 signatures of fallopian tube: a risk for pelvic serous cancers.

Wang Y, Wang Y, Li D, Li L, Zhang W, Yao G, Jiang Z, Zheng W - J Hematol Oncol (2014)

Bottom Line: The absolute number of tubal IMP3 signatures increased significantly within each age group.Age remained a significant risk factor for serous neoplasia after age adjustment.IMP3 signatures were more frequent in the patients of both high-risk and PSC groups.

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ABSTRACT

Background: Recent advances suggest fallopian tube as the main cellular source for women's pelvic serous carcinoma (PSC). In addition to TP53 mutations, many other genetic changes are involved in pelvic serous carcinogenesis. IMP3 is an oncofetal protein which has recently been observed to be overexpressed in benign-looking tubal epithelia. Such findings prompted us to examine the relationship between IMP3 over-expression, patient age and the likelihood of development of PSC.

Methods: Fallopian tubes from three groups (low-risk, high-risk, and PSC) of patients with matched ages were studied. Age was recorded in 10 years intervals ranging from age 20 to older than 80. The number of IMP3 signatures (defined by 10 or more tubal secretory cells stained positively and continuously in benign appearing tubal mucosa) from both tubal fimbria and ampulla segments was measured. The data was analyzed by standard contingency table and Poisson distribution methods after age adjustment. IMP3 overexpression was also examined in serous tubal intraepithelial carcinoma and PSC.

Results: The positive IMP3-stained cells are mainly tubal secretory cells. The absolute number of tubal IMP3 signatures increased significantly within each age group. Age remained a significant risk factor for serous neoplasia after age adjustment. IMP3 signatures were more frequent in the patients of both high-risk and PSC groups. The presence of IMP3 signatures in tubal mucosa was significantly associated with tubal or pelvic serous carcinogenesis (p < 0.001).

Conclusions: The findings suggest that tubal secretory cells with IMP3 signatures showing growth advantage could potentially serve as a latent precancer biomarker for tubal or pelvic serous carcinomas in women.

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The IMP3 signature increases with age. The detailed data are presented in Table 1.
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Figure 1: The IMP3 signature increases with age. The detailed data are presented in Table 1.

Mentions: Regarding the tubal locations of IMP3 signatures, within the high-risk and PSC groups, the tubal fimbria had about 10-fold more IMP3 signatures than that in the ampulla region (p < 0.001). We observed significantly higher number of IMP3 signatures in the fimbria region from the patients of low-risk group. The detailed data about the IMP3 signatures in tubal segments are summarized in Table 1 and the corresponding bar graph is shown in Figure 1.


IMP3 signatures of fallopian tube: a risk for pelvic serous cancers.

Wang Y, Wang Y, Li D, Li L, Zhang W, Yao G, Jiang Z, Zheng W - J Hematol Oncol (2014)

The IMP3 signature increases with age. The detailed data are presented in Table 1.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4230642&req=5

Figure 1: The IMP3 signature increases with age. The detailed data are presented in Table 1.
Mentions: Regarding the tubal locations of IMP3 signatures, within the high-risk and PSC groups, the tubal fimbria had about 10-fold more IMP3 signatures than that in the ampulla region (p < 0.001). We observed significantly higher number of IMP3 signatures in the fimbria region from the patients of low-risk group. The detailed data about the IMP3 signatures in tubal segments are summarized in Table 1 and the corresponding bar graph is shown in Figure 1.

Bottom Line: The absolute number of tubal IMP3 signatures increased significantly within each age group.Age remained a significant risk factor for serous neoplasia after age adjustment.IMP3 signatures were more frequent in the patients of both high-risk and PSC groups.

View Article: PubMed Central - HTML - PubMed

ABSTRACT

Background: Recent advances suggest fallopian tube as the main cellular source for women's pelvic serous carcinoma (PSC). In addition to TP53 mutations, many other genetic changes are involved in pelvic serous carcinogenesis. IMP3 is an oncofetal protein which has recently been observed to be overexpressed in benign-looking tubal epithelia. Such findings prompted us to examine the relationship between IMP3 over-expression, patient age and the likelihood of development of PSC.

Methods: Fallopian tubes from three groups (low-risk, high-risk, and PSC) of patients with matched ages were studied. Age was recorded in 10 years intervals ranging from age 20 to older than 80. The number of IMP3 signatures (defined by 10 or more tubal secretory cells stained positively and continuously in benign appearing tubal mucosa) from both tubal fimbria and ampulla segments was measured. The data was analyzed by standard contingency table and Poisson distribution methods after age adjustment. IMP3 overexpression was also examined in serous tubal intraepithelial carcinoma and PSC.

Results: The positive IMP3-stained cells are mainly tubal secretory cells. The absolute number of tubal IMP3 signatures increased significantly within each age group. Age remained a significant risk factor for serous neoplasia after age adjustment. IMP3 signatures were more frequent in the patients of both high-risk and PSC groups. The presence of IMP3 signatures in tubal mucosa was significantly associated with tubal or pelvic serous carcinogenesis (p < 0.001).

Conclusions: The findings suggest that tubal secretory cells with IMP3 signatures showing growth advantage could potentially serve as a latent precancer biomarker for tubal or pelvic serous carcinomas in women.

Show MeSH
Related in: MedlinePlus