Publications by authors named "Hiroaki Itakura"

Article Synopsis
  • Somatic cell reprogramming using specific microRNAs (miR-200c, miR-302s, and miR-369s) can inhibit tumor growth by increasing cyclin-dependent kinase inhibitors in human colorectal cancer (CRC) cells.
  • Experiments in mice prone to CRC showed that repeated doses of these microRNAs notably reduced polyp formation.
  • c-MAF, identified as a key player in early tumorigenesis, was downregulated in CRC but increased in microRNA-treated normal tissues, suggesting it may have a tumor-suppressive role in CRC development, with low levels linked to worse patient outcomes.
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Here we aimed to establish a simple detection method for detecting circulating tumor cells (CTCs) in the blood sample of colorectal cancer (CRC) patients using poly(2-methoxyethyl acrylate) (PMEA)-coated plates. Adhesion test and spike test using CRC cell lines assured efficacy of PMEA coating. A total of 41 patients with pathological stage II-IV CRC were enrolled between January 2018 and September 2022.

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Article Synopsis
  • Recent research indicates that postoperative carcinoembryonic antigen (post-CEA) can be a reliable prognostic factor for assessing stage II colon cancer outcomes, even though current guidelines do not consider it in high-risk criteria for adjuvant chemotherapy.
  • The study analyzed 199 patients with stage II colon cancer and found that those with high post-CEA levels (≥5.0 ng/ml) had significantly poorer relapse-free survival (RFS) and overall survival (OS) compared to those with normal levels.
  • High post-CEA levels were identified as an independent risk factor for worse survival outcomes, suggesting the need for further multicenter prospective studies to validate these findings and potentially reconsider guidelines for stage II colon cancer management.
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miR‑1291 exerts an anti‑tumor effect in a subset of human carcinomas, including pancreatic cancer. However, its role in colorectal cancer (CRC) is largely unknown. In the present study, the expression and effect of miR‑1291 in CRC cells was investigated.

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Background: KLF5 plays a crucial role in stem cells of colorectum in cooperation with Lgr5 gene. In this study, we aimed to explicate a regulatory mechanism of the KLF5 gene product from a view of three-dimensional genome structure in colorectal cancer (CRC).

Methods: In vitro engineered DNA-binding molecule-mediated chromatin immunoprecipitation (enChIP)-seq method was used to identify the regions that bind to the KLF5 promoter.

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Introduction: Anus-preserving surgery for a large rectal gastrointestinal stromal tumor (GIST) may be difficult because of the location of the tumor in the pelvis. Therefore, rectal GIST might require extensive surgery, such as abdominoperineal resection. In recent years, preoperative imatinib therapy has been used to reduce tumor size and preserve the anus in some cases.

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Background: Since the introduction of the guideline for the diagnosis and treatment of esophageal carcinoma in 2007, the indication for placing an esophageal stent has changed, especially with respect to the treatment of esophageal stricture after chemoradiotherapy(CRT). For CRT cases, irradiation after stent placement and stent placement after CRT are not recommended due to the risk of perforation.

Methods: Thirty-eight patients who underwent esophageal stenting in our department between January 2007 and December 2018 and who were diagnosed with thoracic esophageal cancer were included in this study.

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A 94-year-old woman, who had been treated for multiple colon cancers 4 years ago, complained of umbilicus induration and had been followed up in a previous hospital with a diagnosis of periumbilical inflammation. Four years and 3 months postoperatively, the umbilical induration was enlarged, and umbilical metastasis of adenocarcinoma was diagnosed on biopsy. Umbilical resection was performed, and multiple peritoneal metastases were revealed.

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We report a case involving a 76-year-old woman with transverse colon cancer undergoing long-term chemotherapy following palliative colonic stent placement. She visited our hospital with a diagnosis of colonic obstruction. Her abdomen was evidently distended and tender.

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A 73-year-old man was admitted to our hospital with anal pain. The 10 cm tumor was observed externally at the 3 o' clock side of his anus. He was unable to maintain the sitting position because of pain and had fecal incontinence and erosive skin inflammation.

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Article Synopsis
  • Enteric duplication cysts are rare and typically have low morbidity; only 10 cases have been reported, with two having malignant transformation, including the case described here, which involved advanced cancer.
  • A 43-year-old woman presented with abdominal pain and a large cystic mass in her right upper abdomen, initially diagnosed as a tumor from the pancreas.
  • The final pathology confirmed the mass was an isolated advanced enteric duplication cyst cancer, not related to the pancreas, despite preoperative suspicion of mucinous cystic neoplasm leading to surgery.
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Purpose: Positive peritoneal lavage cytology for gastric carcinoma cells (CY1) is considered distant metastasis and is classified as Stage IV. However, patients with CY1 comprise a heterogeneous population, and their prognosis varies greatly. The prognostic factors for gastric cancer patients with CY1 were retrospectively reviewed.

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We studied the clinicopathological findings of 8 patients with perforated colorectal cancer. Four patients were male. In 7 patients, the primary cancer site was left side colon.

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Malignant intractable ascites worsens not only patient symptoms but also their daily activities. It often leads to a patient discontinuing or postponing chemotherapy. In the present study, we introduced cell-free and concentrated ascites reinfusion therapy(CART)for malignant intractable ascites from colorectal cancer.

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Perforated gastric cancer is relatively rare and the incidence is reported about 1% of all the cases of gastric cancer. We retrospectively analyzed the clinical data of the consecutive 12 patients with perforated gastric cancer who underwent operation in our hospital between January 2005 and December 2016. There were 5 men and 7 women, with an average age of 65.

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Article Synopsis
  • A 50-year-old patient who had previously undergone gastrectomy for gastric cancer and chemotherapy for metastasis experienced complications due to a central venous catheter.
  • While receiving treatment with ramucirumab and paclitaxel, he noticed swelling in his right chest, leading to the discovery of a fractured catheter through radiographs and a CT scan.
  • The fractured catheter had caused laceration of a muscle and was successfully removed without complications using a minimally invasive technique.
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