Prognostic impact and survival outcomes of colon perforation in patients with metastatic colorectal cancer: a multicenter retrospective cohort study.

Background: Colon perforation caused by colorectal cancer (CRC) is a fatal condition requiring emergency intervention. For patients with metastatic lesions, surgeons face difficult decisions regarding whether to resect the primary and metastatic lesions. Moreover, there is currently no established treatment strategy for these patients.

Necrotizing fasciitis wound after debridement could be successfully treated with negative-pressure wound therapy with instillation and dwelling: A case report.

Background: Necrotizing fasciitis (NF) is associated with a high mortality rate. Adequate incision and drainage and repeated debridement are necessary for NF management. After drainage, daily local irrigation should be performed.

A case of strongly suspected Lynch syndrome with colorectal neuroendocrine carcinoma.

Background: Neuroendocrine cell carcinomas (NEC) of the colon and rectum are uncommon, representing ~ 0.1% of all colorectal carcinomas. They are associated with a much worse prognosis compared to adenocarcinoma of the colon and rectum, as death occurs in approximately half of all patients within 1 year.

Impact of histological subtype on prognosis in stage IV colorectal cancer: A population-based cohort study.

Background: There are a few established prognostic factors for stage IV colorectal cancer. Thus, this study aimed to evaluate the impact of histological subtypes on prognosis and metastatic patterns in patients with stage IV colorectal cancer.

Methods: This was a population-based, multicenter, cohort study.

Clinical Features and Survival of Young Adults with Stage IV Gastric Cancer: a Japanese Population-Based Study.

Purpose: With the aging of society, the mean age of patients with gastric cancer (GC) in Japan has increased. However, there are few documented outcomes for young patients with stage IV GC. We investigated the clinical characteristics and prognosis of such patients aged < 40 years using a dataset from an integrated population-based cohort study.

Clinical impact of gastrectomy for gastric cancer patients with positive lavage cytology without gross peritoneal dissemination.

Background: The prognosis of gastric cancer patients with positive lavage cytology without gross peritoneal dissemination (P0CY1) is poor. The survival benefit of gastrectomy for these patients has not been established.

Patients And Methods: In this population-based cohort study, we investigated the impact of radical gastrectomy with lymph node dissection for P0CY1 patients.

Clinical Impact of Primary Tumor Site in Stage IV Colorectal Cancer: A Statewide Cohort Study.

Background/aim: We investigated the clinical impact of the primary tumor site in stage IV colorectal cancer (CRC).

Patients And Methods: In this statewide multicenter retrospective cohort, patients with stage IV CRC from nine hospital-based cancer registries across the Fukushima Prefecture (2008-2015) were categorized based on three primary tumor sites: right colon cancer (RCC), left colon cancer (LCC), and rectal cancer. Overall survival was assessed using Cox regression analysis.

A grading system for predicting the prognosis of gastric cancer with liver metastasis.

Objective: The prognosis of patients with liver metastases from gastric cancer is determined using tumor size and number of metastases; this is similar to the factors used for the prediction of liver metastases from colorectal cancer. The relationship between the degree of liver metastasis from gastric cancer and prognosis with reference to the classification of liver metastasis from colorectal cancer was investigated.

Methods: This was a multi-institutional historical cohort study.

Benefit of intensive chemotherapy for elderly patients aged 80 years or older with metastatic colorectal cancer: a state-wide multicenter cohort study.

Background: It remains unclear whether intensive chemotherapy for Stage IV colorectal cancer (CRC) patients aged 80 years or older is beneficial prognostically. This study aimed to investigate the overall survival of Stage IV CRC patients aged ≥ 80 years receiving intensive chemotherapy.

Methods: The study design was a population-based, multicenter, historical cohort study.

An ascites grading system for predicting the prognosis of gastric cancer with peritoneum dissemination.

Aim: Gastric cancer with peritoneum dissemination is intractable with surgical resection. The evaluation of the degree of dissemination using computed tomography (CT) is difficult. We focused on the amount of ascites based on CT findings and established a scaling system to predict these patients' prognoses.

Overexpression of adenovirus-mediated p27kip1 lacking the Jab1-binding region enhances cytotoxicity and inhibits xenografted human cholangiocarcinoma growth.

The cyclin-dependent kinase inhibitor (CDK1) p27(kip1) is a negative regulator of cell cycling and has antitumor effects. In our previous study, the recombinant adenovirus expressing wild-type p27(kip1) (Adp27-wt) induced cell cycle arrest and apoptosis, and proved that p27 is a tumor suppressor gene like p53. Another adenovirus vector expressing mutant p27(kip1) (Adp27-mt), which inhibited degradation by the ubiquitin-proteasome system, showed increased protein stability and caused a stronger induction of apoptosis.

Up-regulated p27Kip1 reduces matrix metalloproteinase-9 and inhibits invasion of human breast cancer cells.

Background: p27Kip1 is a cyclin-dependent kinase inhibitor which has been reported to be associated with invasion, metastasis and angiogenesis in malignant tumors, but its mechanism of action remains unknown. Here, it was examined whether p27Kip1 has an inhibitory effect on cancer cell invasion and correlates with matrix metalloproteinase expression (MMPs).

Material And Methods: The human breast cancer cell line MDA-MB-231 and MDA-MB-231 transfectedp27Kip1 MDA-MB-p27 were used for the invasion assay, Western blotting and real-time quantitative RT-PCR.

Adenovirus expressing mutant p27kip1 enhanced apoptosis and inhibited the growth of xenografted human breast cancer.

Purpose: To evaluate the anti-tumor effects of a novel adenovirus expressing mutant p27(kip1) (Adp27-mt), which consists of a mutation of Thr-187/Pro-188 to Met-187/Ile-188.

Methods: Using the human breast cancer cell lines, MDA-MB-231, ZR-75-1, and MCF-7, we tested Adp27-mt for cell cycle assay, growth inhibition assay, and TdT-mediated dUTP-biotin nick end labeling in a human breast cancer-grafted severe combined immunodeficiency (SCID) mouse model.

Results: The mutant p27(kip1) induced stronger apoptosis in the breast cancer cell lines than adenovirus expressing wild-type p27(kip1) (Adp27-wt).

Adenovirus expressing mutant p27kip1 enhanced apoptosis against cholangiocarcinoma than adenovirus-p27kip1 wild type.

Background/aims: The prognosis of cholangiocarcinoma is extremely poor despite the aggressive multidisciplinary cancer therapies that have been used clinically. Thus, it is imperative to develop new and effective treatments, such as gene therapy in order to treat this disease. p53 is the most common target for cancer gene therapy treatment.

Adenovirus expressing p27KIP1 induces apoptosis against cholangiocarcinoma cells by triggering Fas ligand on the cell surface.

Background/aims: The prognosis of patients with cholangiocarcinoma is poor because of the difficulty of surgical curative resection. Therefore, other effective treatments must be developed especially those involving gene therapy. p27kip1, one of the cyclin-dependent kinase inhibitors, is known to limit proliferation of the cells.