Publications by authors named "Ushigome H"

BH3 mimetics are small‑molecule inhibitors of the antiapoptotic Bcl‑2 family and have therapeutic efficacy against hematological malignancies. BH3 mimetic A‑1331852 suppresses colorectal cancer cell proliferation. Progressive resistance to the widely used anticancer agent fluorouracil (5‑FU) is a key reason for colorectal cancer recurrence; therefore, the present study tested if A‑1331852 can suppress the proliferation of 5‑FU‑resistant colorectal cancer cells.

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Purpose: Stoma outlet obstruction (SOO) is an early postoperative complication of rectal cancer. We devised a novel surgical technique: end-ileostomy, to reduce SOO. Here, we describe the surgical technique used for constructing an end ileostomy and assess its impact on SOO.

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Extraperitoneal colostomy is often selected to reduce the risk of parastomal hernia. However, its closure surgery is rare and seldom reported. Here, we report our unique experience with robotic left hemicolectomy and extraperitoneal colostomy closure.

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Background: In laparoscopic colorectal surgery, accurate localization of a tumor is essential for ensuring an adequate ablative margin. Therefore, a new method, near-infrared laparoscopy combined with intraoperative colonoscopy, was developed for visualizing the contour of a cecal tumor from outside of the bowel. The method was used after it was verified on a model that employed a silicone tube.

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Background: The standard treatment for colorectal cancer consists of surgery and chemotherapy, which can be combined to improve outcomes. Immune checkpoint inhibitors (ICI) are a significant advancement in the standard treatment of metastatic, unresectable colorectal cancer with deficient mismatch repair (dMMR). However, limited data are available about the use of ICI in the neoadjuvant and conversion settings.

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Although robotic rectal resections are now widely performed, there are few robotic suction tools that can be easily used by console surgeons. It can therefore be difficult to maintain a clear visual field in the pelvis when there is effusion and bleeding from either a highly advanced cancer or from preoperative cancer treatment. In this report, we introduce our unique surgical technique that uses a soft catheter with a small gauze ball attached, inserted through the assistant port.

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The patient was a 68-year-old woman who was on hemodialysis due to systemic amyloidosis and nephrotic syndrome. Biopsy revealed amyloid deposition in the stomach, duodenum, and colon. A transverse colon tumor was found on a follow- up CT after the aortic dissection surgery.

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Aims/introduction: Isolated high home systolic blood pressure (IHHSBP) is a risk for cardiovascular disease (CVD). However, no study has shown an association between IHHSBP and CVD in diabetes. We examined the association between IHHSBP and CVD in type 2 diabetes.

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It has been pointed out that robotic surgery is more time-consuming than laparoscopic surgery, and a major challenge for the future is educating young surgeons while maintaining the surgical quality. To solve these problems, we report a role-sharing surgery (RSS) approach in which the surgery is divided into several areas and timetabled, with roles shared by several operators. We performed RSS for 19 standard colorectal cancer surgeries.

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Background: Spontaneous regression (SR) of cancer occurs in 1 in 60,000-100,000 patients. This phenomenon has been reported in almost all cancer types, most commonly neuroblastoma, renal cell carcinoma, malignant melanoma, and lymphoma/leukemia. However, SR in colorectal cancer (CRC) is extremely rare, particularly in advanced cases.

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Ataxia telangiectasia and Rad3‑related (ATR) is a kinase that repairs DNA damage. Although inhibitors that selectively target ATR have been developed, their effectiveness in colorectal cancer has not been widely reported. The present study hypothesized that anticancer agents that effectively act in the S phase before the G/M checkpoint may be ideal agents for concomitant use with ATR inhibitors, which act at the G/M checkpoint.

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Albuminuria is a prognostic marker of worsening renal outcomes in people with hypertension and type 2 diabetes. High home systolic blood pressure is associated with the development of diabetic nephropathy. We assessed the impact of chronic high home blood pressure on diabetic nephropathy progression 10 years after study entry.

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Article Synopsis
  • A study highlighted the impact of masked hypertension (MH) and sustained hypertension (SH) on the progression of diabetic nephropathy while noting the lack of research on their role in cardiovascular events among diabetic patients.
  • It involved 1,082 type 2 diabetes patients with no prior cardiovascular issues, tracking their blood pressure over 14 days to classify hypertension status.
  • The findings indicated that those with SH had a significantly higher risk of experiencing cardiovascular events compared to those with controlled blood pressure, suggesting the importance of regular blood pressure monitoring for diabetes patients to predict future heart problems.
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Introduction: Compared with laparoscopic surgery (LS), robotic surgery (RS) is considered to have acceptable outcomes in rectal cancer, but few reports have focused on chylous ascites in RS. The aim of this study was to investigate the incidence and etiology of chylous ascites after RS.

Methods: This retrospective study included 291 patients with rectal cancer who underwent RS (n = 165) or LS (n = 126) with high ligation of the inferior mesenteric artery (IMA).

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Background And Aims: Pulse pressure (PP) is a prognostic predictor of cardiovascular mortality. This retrospective cohort study aimed to investigate the association between home PP measurements and cardiovascular disease in patients with type 2 diabetes.

Methods And Results: Home blood pressure was measured for 14 consecutive days in 1082 patients with type 2 diabetes, and pulse pressure was calculated.

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Objective: The maximum blood pressure was reported as a possible marker of organ damage. We previously showed that maximum home blood pressure was significantly associated with development of diabetic nephropathy. In the same cohort of patients with diabetes as in the previous study, this study aimed to evaluate the prognostic blood pressure values for the onset of first cardiovascular events.

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Background: Using normal home blood pressure (home BP) as a reference, isolated high home systolic blood pressure (IH-home SBP) increases the risk of diabetic nephropathy. However, whether diabetic nephropathy would improve among diabetic patients without IH-home SBP has not been previously assessed.

Methods: This prospective 5-year cohort study of 264 patients with moderate or severe albuminuria investigated the effect of IH-home SBP or normal home BP on the risk of diabetic nephropathy in patients with type 2 diabetes mellitus.

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Introduction: The best surgical technique for rectal cancer invading the prostate remains controversial. Rectal resection with en bloc prostatectomy using a standard retropubic approach is an option but has disadvantages. We report a new surgical procedure applying Retzius-sparing robot-assisted radical prostatectomy.

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Background/aim: The acquisition of resistance to apoptosis is one of the biggest problems in colorectal cancer (CRC) treatment. This study aimed to elucidate the mechanisms of resistance to apoptosis with a focus on interleukin (IL)-6 produced by the interaction between cancer cells and cancer-associated fibroblasts (CAFs).

Materials And Methods: DLD-1 and HCT116 cell lines were treated with IL-6 and furthermore co-cultured with CAFs.

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The repair of DNA damage caused by chemotherapy in cancer cells occurs mainly at two cell cycle checkpoints (G and G) and is a factor contributing to chemoresistance. Most colorectal cancers harbor mutations in p53, the main pathway involved in the G checkpoint, and thus, are particularly dependent on the G checkpoint for DNA repair. The present study examined the effect of AZD6738, a specific inhibitor of ataxia telangiectasia mutated and rad3‑related (ATR) involved in the G checkpoint, combined with 5‑fluorouracil (5‑FU), a central chemotherapeutic agent, on colorectal cancer cells.

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Background: There is no doubt that antibody-mediated rejection (AMR) due to donor-specific anti-HLA antibodies (DSA) brings a poor outcome for liver transplant recipients. However, the relationship between intragraft DSA (g-DSA), complement-binding abilities, and AMR remains unknown.

Materials And Methods: We enrolled a total of 20 liver transplant recipients who underwent protocol or episode graft biopsies in the mid to long term after liver transplant (median 48.

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Background: Living donor liver transplant between elderly donors and recipients has gained popularity, but the effects of their age remain unknown. Our aim is to evaluate the effects of matching by donor and recipient age with special insights into their recovery periods.

Methods: Ninety-five living donor liver transplant pairs, excluding the left lateral segment graft cases, who underwent surgery were enrolled.

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Background: It is true that multiple arterial reconstructions are sometimes required in living donor liver transplant (LDLT). However, the best procedure is still controversial regarding arterial reconstruction in liver grafts with multiple arteries.

Methods: A total of 93 patients, 55 right lobe grafts and 38 left lobe grafts, who underwent LDLT at our university from 2003 to 2017 were enrolled for this study.

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The cancer‑stromal interaction has been demonstrated to promote tumor progression, and cancer-associated fibroblasts (CAFs), which are the main components of stromal cells, have attracted attention as novel treatment targets. Chitinase 3-like 1 (CHI3L1) is a chitinase-like protein, which affects cell proliferation and angiogenesis. However, the mechanisms through which cells secrete CHI3L1 and through which CHI3L1 mediates tumor progression in the cancer microenvironment are still unclear.

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