Expression of vascular endothelial growth factor (VEGF)-C and VEGF-D in early gastric carcinoma: correlation with clinicopathological parameters.

In this study, we investigated whether expression of vascular endothelial growth factor (VEGF)-C and/or VEGF-D correlates with clinicopathological features of human gastric carcinoma. We immunohistochemically examined the expression of VEGF-C and VEGF-D in 140 archival surgical specimens of submucosally invasive gastric carcinoma. Of these specimens, 32 (22.

Expression of human telomerase reverse transcriptase mRNA in esophageal cancers and precancerous lesions.

Telomerase activity confers immortality to cells through stabilization of chromosomes and contributes to the development of most human cancers. Human telomerase reverse transcriptase (hTERT) is a catalytic subunit of telomerase. Expression of hTERT mRNA has been reported to be correlated with telomerase activity.

Vascular endothelial growth factor-C expression predicts lymph node metastasis of human gastric carcinomas invading the submucosa.

We examined the relationship between vascular endothelial growth factor (VEGF)-C expression and lymph node metastases in gastric carcinomas invading the submucosa. Of the six human gastric carcinoma cell lines, two constitutively expressed VEGF-C mRNA. In three of 12 gastric biopsy specimens (25%), VEGF-C mRNA was detected in tumour tissues, but not in corresponding normal mucosa by reverse transcriptase-polymerase chain reaction (RT-PCR).

Clinicopathological significance of vascular endothelial growth factor (VEGF)-C in human esophageal squamous cell carcinomas.

The purpose of this study was to investigate the expression of vascular endothelial growth factor (VEGF) -C in human esophageal squamous cell carcinomas to elucidate its role in lymph node metastasis and tumor progression. The expression of VEGF-C and flt-4 genes was examined in 5 esophageal carcinoma cell lines, 12 fresh biopsy specimens and 48 archival surgical specimens of human esophageal carcinoma tissues by RT-PCR and immunohistochemistry. Immunohistochemistry using antibodies against CD34 (endothelial cell specific) was also carried out and microvessels were quantified by counting vessels in a 200x field in the most vascular area of the tumor.

Conditions of curability after endoscopic resection for colorectal carcinoma with submucosally massive invasion.

The deepest invasive portion of colorectal carcinoma (CRC) is considered to be the part, which ultimately will invade, spread locally and give metastasis. We have previously reported that histologic differentiation at the deepest invasive portion of CRC closely correlate with metastatic potential and is useful in understanding the curability of endoscopic mucosal resection (EMR). The aim of this study is to clarify the conditions of curative EMR for CRC with submucosally (sm) massive invasion.