Immunohistochemical analysis of TIMP-3 and MMP-9 in actinic keratosis, squamous cell carcinoma of the skin, and basal cell carcinoma. Poswar, F., O., Fraga, C., A., Farias, L., C., Feltenberger, J., D., Cruz, V., P., Santos, S., H., Silveira, C., M., de Paula, A., M., & Guimarães, A., L. Pathology Research and Practice, 209(11):705-709, 2013.
doi  abstract   bibtex   
The expression of metalloproteinases and their inhibitors has been related to different invasive and metastatic potentials in cancer. This study aims to investigate the immunohistochemical expression of TIMP-3 and MMP-9 in samples of basal cell carcinoma (BCC), squamous cell carcinoma of the skin (SCC), and actinic keratosis (AK). Immunohistochemistry was performed to evaluate the expression of TIMP-3 and MMP-9 in samples of BCC (n=22), SCC (n=10), and AK (n=15). Ten fields of both tumor parenchyma and tumor stroma were photographed and counted in image software. The ratio of positive cells to total cells was used to quantify the staining. A higher expression of MMP-9 was found in tumor stroma of SCC compared to BCC and AK. No significant differences in TIMP-3 expression were observed among the groups. Considering the well-described differences between these neoplasms, these results provide additional evidence of the role of MMP-9 in tumor invasiveness of keratinocyte-derived tumors. © 2013 Elsevier GmbH.
@article{
 title = {Immunohistochemical analysis of TIMP-3 and MMP-9 in actinic keratosis, squamous cell carcinoma of the skin, and basal cell carcinoma},
 type = {article},
 year = {2013},
 keywords = {Actinic keratosis,Basal cell carcinoma,Matrix metalloproteinase-9,Squamous cell carcinoma,Tissue inhibitor of metalloproteinase 3},
 pages = {705-709},
 volume = {209},
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 abstract = {The expression of metalloproteinases and their inhibitors has been related to different invasive and metastatic potentials in cancer. This study aims to investigate the immunohistochemical expression of TIMP-3 and MMP-9 in samples of basal cell carcinoma (BCC), squamous cell carcinoma of the skin (SCC), and actinic keratosis (AK). Immunohistochemistry was performed to evaluate the expression of TIMP-3 and MMP-9 in samples of BCC (n=22), SCC (n=10), and AK (n=15). Ten fields of both tumor parenchyma and tumor stroma were photographed and counted in image software. The ratio of positive cells to total cells was used to quantify the staining. A higher expression of MMP-9 was found in tumor stroma of SCC compared to BCC and AK. No significant differences in TIMP-3 expression were observed among the groups. Considering the well-described differences between these neoplasms, these results provide additional evidence of the role of MMP-9 in tumor invasiveness of keratinocyte-derived tumors. © 2013 Elsevier GmbH.},
 bibtype = {article},
 author = {Poswar, Fabiano O. and Fraga, Carlos A.C. and Farias, Lucyana C. and Feltenberger, John D. and Cruz, Vitória P.D. and Santos, Sérgio H.S. and Silveira, Christine M. and de Paula, Alfredo M.B. and Guimarães, André L.S.},
 doi = {10.1016/j.prp.2013.08.002},
 journal = {Pathology Research and Practice},
 number = {11}
}

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