Publications by authors named "Atsushi Kamachi"

Background And Aim: Post-hepatectomy liver failure (PHLF) after major hepatopancreatoduodenectomy (HPD) is a challenge to overcome. However, the appropriate target proportion of the future liver remnant (pFLR) to prevent severe PHLF in major HPD remains uncertain. This study aimed to determine the minimum pFLR required for safe major HPD.

View Article and Find Full Text PDF
Article Synopsis
  • Histone lactylation is a new epigenetic modification driven by lactate from glycolysis, which is often heightened in cancer, notably gastric cancer (GC), and is linked to poorer patient outcomes.
  • In GC, increased levels of histone H3K18 lactylation correlate with worse prognosis, while SIRT1 plays a key role in regulating these levels by either promoting or diminishing H3K18la depending on its expression.
  • Targeting the interplay between SIRT1, the lncRNA H19, and glycolysis presents a promising therapeutic approach for GC, showing significant anti-cancer effects while minimizing harm to normal cells.
View Article and Find Full Text PDF

Background: Juvenile polyposis syndrome (JPS) is an autosomal dominant, inherited disorder characterized by multiple hyperproliferative polyps of the gastrointestinal tract, particularly of the colon, rectum, and stomach. SMAD4 mutations are frequently associated with multiple polyposis of the stomach; the condition causes severe bleeding and hypoproteinemia, which may progress to severe dysplasia and adenocarcinoma formation. We report our experience with the first case of total gastrectomy with pancreaticoduodenectomy following two partial jejunectomies for JPS, who presented with refractory anemia and protein-losing gastroenteropathy due to polyposis of the stomach and duodenum.

View Article and Find Full Text PDF

Cholangiocarcinoma has a poor prognosis, and resection is the only curative treatment. Pembrolizumab, a programmed death receptor 1 inhibitor, has proven effective against unresectable or metastatic solid tumors with high microsatellite instability (MSI-H) or a high tumor mutation burden (TMB-H). In the present case, pembrolizumab treatment was initiated after standard chemotherapy for MSI-H and TMB-H unresectable intrahepatic cholangiocarcinoma.

View Article and Find Full Text PDF

Background: Children requiring liver transplantation generally have severe growth retardation. Recipients experience posttransplantation catch-up growth, although some show short adult heights. We aimed to determine decades-long catch-up growth trends and risk factors for short adult height following liver transplantation.

View Article and Find Full Text PDF

Background: Although chronic kidney disease (CKD) after liver transplantation (LTx) is a common complication in adults, its long-term significance after pediatric LTx remains unclear. We examined the decades-long transition of renal function and revealed the risk factors for late-onset CKD after pediatric LTx in a single-center retrospective cohort of 117 pediatric LTx recipients who survived >5 y.

Methods: The estimated glomerular filtration rate (eGFR) and CKD stages were calculated using serum creatinine.

View Article and Find Full Text PDF

Background: Liver metastasis is the most common form of distant spread of colorectal cancer. Despite oncological and surgical advances, only about 25% of patients are eligible to undergo resection. As the liver has a limited resectable volume, tumor reduction and remnant liver hypertrophy are of critical importance in treating initially unresectable colorectal cancer liver metastasis.

View Article and Find Full Text PDF

Background: The aim of this study was to evaluate the safety of urgent laparoscopic cholecystectomy (Lap-C) for grade II acute cholecystitis (AC) in high-risk patients who were defined by Tokyo Guideline 18 as having age-adjusted Charlson comorbidity index ≥6 or American Society of Anesthesiologists physical status classification (ASA-PS) ≥ 3, compared with elective Lap-C following percutaneous transhepatic gallbladder drainage (PTGBD).

Methods: In 73 grade II AC patients who underwent Lap-C from January 2012 to March 2021, 35 were identified as high-risk; 22 underwent urgent Lap-C (urgent group) and 13 PTGBD followed by elective Lap-C (elective group). Surgical and perioperative outcomes were analyzed.

View Article and Find Full Text PDF
Article Synopsis
  • - Malignant lymphoma in the gallbladder is rare, with Burkitt's lymphoma being even more uncommon, and this report discusses a unique case that mimicked gallbladder adenocarcinoma.
  • - An 83-year-old man was found to have a gallbladder tumor and enlarged lymph nodes during a CT scan for hypertension; initial diagnosis suggested gallbladder adenocarcinoma, leading to surgery.
  • - The final diagnosis was Burkitt's lymphoma, and despite negative surgical margins, recurrence was detected, prompting the patient to begin chemotherapy with a regimen including cyclophosphamide and doxorubicin.
View Article and Find Full Text PDF

Leucine-rich repeat-containing G-protein-coupled receptor 5 (LGR5) is a known cancer stem cell marker. However, there are no reported analyses of LGR5 mRNA expression in normal liver and liver cancer tissues. Here, we evaluated LGR5 expression by RNAscope, a newly developed RNA in situ hybridization technique, using a tissue microarray consisting of 25 samples of intrahepatic cholangiocarcinoma (ICC) selected from the medical archives at our hospital.

View Article and Find Full Text PDF

Colocutaneous fistula associated with Crohn's disease after mesh repair for inguinal hernia has not been previously reported in the literature. We report such case in an 83-year-old man following a preperitoneal repair of a left-sided inguinal hernia using Kugel patch. The patient has Crohn's disease in remission status for 4 years.

View Article and Find Full Text PDF

Background: Although various biomarkers are useful in predicting cancer prognosis, the most effective preoperative systemic biomarkers for pancreatic ductal adenocarcinoma (PDAC) have not been established. This study aimed to evaluate whether the lymphocyte-to-monocyte ratio (LMR) can predict the long-term outcomes for patients who were to undergo surgical resection of PDAC.

Methods: The study involved 170 patients with PDAC who underwent resection.

View Article and Find Full Text PDF