Publications by authors named "Ryo Ando"

Adult myogenic cell lines are useful to study muscle development, repair and regeneration. In newts, which are known for their high regenerative capacity, myogenic cell lines have not been established in species other than the Eastern newt Notophthalmus viridescens. In this study, we established another myogenic cell line, named CpM01, from the skeletal muscle of the forearm of the adult Japanese fire-bellied newt Cynops pyrrhogaster.

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There are few reports on long-term treatment of bovine osteomyelitis. In this study, two cattle (Japanese black heifer and calf) suffered damage to the dorsal metatarsal below the tarsus due to their hind limbs becoming caught in a metal fence, with consequent struggling and thrashing, causing osteomyelitis of the metatarsal. We present these two cases of osteomyelitis of the metatarsal and compare their: clinical conditions, effects of long-term treatment, and clinical outcomes.

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Esophageal diseases include esophageal obstruction, esophagitis, esophageal stricture, and esophageal diverticulum. Imaging can facilitate the selection of appropriate treatment options and assist in differential diagnosis. Esophageal obstruction in cattle is generally caused by greedy nature of chewing and swallowing of food and foreign structures, including stones, potatoes, trichobezoar, carrots, foodstuffs (i.

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Background & Aims: Limited evidence exists on the association between malnutrition diagnosis using the Global Leadership Initiative on Malnutrition (GLIM) criteria in hospitalized acute care patients and their outcomes; several aspects still require clarification. This study aimed to evaluate the relationship between malnutrition, as defined by the GLIM criteria, at the time of acute hospital admission and discharge to home.

Methods: This retrospective observational study was conducted at a hospital that provides acute care in Japan.

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Purpose: Patients with intestinal failure (IF) require long-term parenteral nutrition using central venous catheters (CVCs), which often require replacement. We adopted a less fallible guidewire replacement (GWR) method and verified its effectiveness and validity.

Methods: We enrolled 108 cases that underwent a CVC replacement with "GWR" method with IF at our department between 2013 and 2023.

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Article Synopsis
  • Acute acquired comitant esotropia, often linked to prolonged near work with digital devices, requires intracranial examination even in nonparalytic cases.
  • A 16-year-old female found to have Lhermitte-Duclos disease presented with this condition, alongside a cerebellar tumor and obstructive hydrocephalus, leading to her diagnosis.
  • Despite partial tumor resection not resolving her esotropia, strabismus surgery successfully eliminated her diplopia, highlighting the importance of neurological assessments for proper treatment.
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Purpose: This study analyzed the efficacy of web excision combined with a pre-membranous incision on the dilated proximal segment for congenital intestinal atresia with type I and stenosis (CIA-I/S).

Patients And Methods: Twenty-six patients underwent surgery for CIA-I/S from January 1990 to June 2022. Patients were categorized into 3 groups according to the surgical procedure: Group A, web excision with pre-membranous incision of the dilated intestine (n = 14); Group B, enteroplasty with a trans-membranous vertical incision (n = 7) and Group C, diamond-shaped anastomosis (n = 5).

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  • Congenital portosystemic shunts (CPSSs) vary in phenotype and pose challenges in determining the best treatment and prognosis, with a study analyzing 122 cases in Japan from 2000-2019 to gather insights.
  • The majority of patients (61.5%) had portal vein (PV) visibility on imaging; however, complications like hyperammonemia and liver masses were notably more prevalent in those without PV visualization, indicating a link between imaging results and health outcomes.
  • While most patients received treatment, including surgical options, those without PV visualization were more likely to experience complications, suggesting the need for early intervention even in asymptomatic cases.
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  • Precut papillotomy can be challenging due to difficulty identifying biliary orifices; this study investigates the effectiveness of Texture and Color Enhancement Imaging (TXI) compared to traditional White Light Imaging (WLI) for this purpose.
  • The study analyzed 20 patients who had undergone bile duct cannulation, assessing how well evaluators could identify biliary orifices using both TXI and WLI in randomized image presentations.
  • Results indicated that TXI offered better accuracy (50.6% vs. 35.6%), higher visibility scores, and greater color differentiation from surrounding tissue compared to WLI, suggesting TXI is a valuable tool for improving biliary cannulation outcomes.
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Image-enhanced endoscopy (IEE) has advanced gastrointestinal disease diagnosis and treatment. Traditional white-light imaging has limitations in detecting all gastrointestinal diseases, prompting the development of IEE. In this review, we explore the utility of IEE, including texture and color enhancement imaging and red dichromatic imaging, in pancreatobiliary (PB) diseases.

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Background: von Hippel-Lindau disease-associated hemangioblastomas (HBs) account for 20%-30% of all HB cases, with the appearance of new lesions often observed in the natural course of the disease. By comparison, the development of new lesions is rare in patients with sporadic HB.

Observations: A 65-year-old man underwent clipping for an unruptured aneurysm of the anterior communicating artery.

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Two male Japanese Black calves developed an enlarged scrotum and testis. Orchiectomy was performed and pus was collected during surgery. After removal of the testis, bacteriological and histopathological examinations were conducted to investigate the cause and confirm the diagnosis.

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Nasal granuloma in cattle results from inflammation within, and attendant proliferation of, the nasal mucosa possibly in response to an allergic response. However, the relationship between nasal granuloma and allergies remains unclear. Furthermore, severe cases have a poor prognosis because there is currently no effective treatment.

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Article Synopsis
  • * The tumor was located in the bilateral atrial pericardium and displayed dense tumor cellular components along with non-neoplastic bone tissue, with various shapes and growth patterns in the tumor cells.
  • * Immunohistochemical analysis indicated that the tumor cells likely originated from the nervous system, leading to the diagnosis of a malignant peripheral nerve sheath tumor with associated changes in bone tissue.
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Purpose: The incidence and risk factors of catheter-related bloodstream infections (CRBSI) in patients with intestinal failure (IF) have not been established, partly because catheter management methods vary from different facilities. This study aimed to identify the risk factors and incidence rate of CRBSIs in patients with IF who were given prophylactic treatment.

Methods: Sixteen patients with IF who required home parenteral nutrition were enrolled in this study.

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The global incidence of ureteroliths in humans is increasing, particularly posing a problem in developed countries. The most common stone type is calcium oxalate, which is associated with a high recurrence rate. In veterinary medicine, stones are the most common cause of ureteral obstruction in cats, accounting for 72-87% of cases.

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Toyonaga and colleagues present a novel "tip-in endoscopic papillectomy" approach for resecting ampullary tumors, aiming to minimize complications like perforation and residual tumor by adapting the colonic polyp endoscopic mucosal resection tip-in method. The technique is described with accompanying video in a case of ampullary tumor near a diverticulum.

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Background: One of the most significant challenges in patients with medulloblastoma is reducing the dose of craniospinal irradiation (CSI) to minimize neurological sequelae in survivors. Molecular characterization of patients receiving lower than standard dose of CSI therapy is important to facilitate further reduction of treatment burden.

Methods: We conducted DNA methylation analysis using an Illumina Methylation EPIC array to investigate molecular prognostic markers in 38 patients with medulloblastoma who were registered in the Japan Pediatric Molecular Neuro-Oncology Group and treated with reduced-dose CSI.

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Background: Cholecystitis is a major adverse event after self-expandable metallic stent placement for distal biliary obstruction (DBO). Covered self-expandable metallic stent (CSEMS) is being increasingly used, but few studies have investigated risk factors for cholecystitis limited to CSEMS. The present study aimed to identify risk factors for cholecystitis after CSEMS.

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Toyonaga and colleagues demonstrate, with accompanying video, the use of low echo reduction, which is a novel endoscopic ultrasound function provided by a new endoscopic ultrasound processor that increases contrast without white-out. Low echo reduction might be useful in improving lesion boundaries and needle visibility during endoscopic ultrasound-guided tissue acquisition.

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Background: Male pseudohermaphroditism is a developmental anomaly wherein animals are genetically and gonadally male, but their internal and/or external genitalia resemble those of females. In cattle, pseudohermaphroditism is often accompanied by multiple severe malformations. To the best of our knowledge, this is the first report of male pseudohermaphroditism in a complex malformed calf born with an acardius amorphous cotwin.

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Adriamycin (ADR) is an effective chemotherapy drug for various cancers but has serious side effects. ADR-induced liver damage is a common problem during therapy, but the underlying mechanism remains to be fully understood. In contrast, ADR-induced glomerular damage is well studied in rodents, and sensitivity to ADR-induced nephropathy is because of the R2140C polymorphism of Prkdc gene.

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Most mitochondrial diseases are hereditary and highly heterogeneous. Cattle born with the V79L mutation in the isoleucyl-tRNA synthetase 1 (IARS1) protein exhibit weak calf syndrome. Recent human genomic studies about pediatric mitochondrial diseases also identified mutations in the IARS1 gene.

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A 2-day-old male black calf presented with neurological symptoms, including opisthotonus. It was unable to stand due to hindquarter paresis. At 5 days old, the calf was able to stand, but exhibited a crossed forelimb gait.

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Background And Aims: Acute cholecystitis is occasionally observed after biliary drainage using a covered self-expandable metal stent (CSEMS) for distal biliary obstruction (DBO). Gallbladder drainage before CSEMS placement may reduce cholecystitis. This study aimed to examine the preventive effect of endoscopic gallbladder stent placement (EGBS) on cholecystitis with CSEMSs.

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