Publications by authors named "Ryo Jimbo"

Background/aim: Transarterial chemoembolization (TACE) is the standard treatment for patients with hepatocellular carcinoma in the intermediate stage; however, with advances in systemic therapy, the indications for TACE have gained significance. While lenvatinib (LEN)-TACE offers the potential for good outcomes, local recurrence has not yet been adequately investigated. Therefore, this study investigated local recurrence factors for each type of TACE, focusing on the lipiodol (Lip) value in LEN-TACE and conventional TACE.

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Background/aim: The prognosis of hepatocellular carcinoma (HCC) complicated with portal vein tumor thrombus (PVTT) is extremely poor. This study investigated whether local ablation-a curative treatment similar to resection-could improve the prognosis of patients with Child-Pugh B/C PVTT.

Patients And Methods: Between January 2020 and December 2023, 25 patients with Child-Pugh B/C PVTT HCC were enrolled, and their overall survival with radiofrequency ablation treatment and the associated drivers were investigated.

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Objective Nonalcoholic fatty liver disease/nonalcoholic steatohepatitis (NAFLD/NASH) treatment guidelines recommend sodium glucose cotransporter 2 inhibitor (SGLT2I) and glucagon-like peptide-1 agonist (GLP-1A) therapy in patients with type 2 diabetes mellitus (T2DM). SGLT2I improves the pathological condition of NAFLD/NASH in T2DM patients. However, cases of rebound during long-term SGLT2I treatment have been reported.

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Background/aim: Atezolizumab plus bevacizumab (Atez/Bev) therapy is extremely effective and has a high response rate in hepatocellular carcinoma (HCC) treatment. This study investigated the efficacy of adding locoregional therapy with Atez/Bev for non-complete response (CR) HCC cases.

Patients And Methods: Twenty-eight HCC patients without CR during Atez/Bev therapy received locoregional therapy, and treatment efficacy was evaluated based on the modified RECIST criteria.

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This study aimed to investigate the risk factors for difficult endoscopic hemostasis in patients with colonic diverticular bleeding and to evaluate the efficacy and safety of transcatheter arterial embolization (TAE) for colonic diverticular bleeding. This study included 208 patients with colorectal diverticular hemorrhage. The non-interventional radiotherapy group consisted of patients who underwent successful spontaneous hemostasis (n = 131) or endoscopic hemostasis (n = 56), whereas the interventional radiotherapy group consisted of patients who underwent TAE (n = 21).

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Article Synopsis
  • The study aimed to assess the effectiveness of transarterial chemoembolization (TACE) using irinotecan-loaded drug-eluting beads in patients with colorectal cancer who have liver metastases and have not benefited from systemic chemotherapy.
  • Forty-six patients were analyzed, divided into two groups: one receiving TACE with DEBIRI and the other not receiving it after undergoing multiple chemotherapy regimens.
  • Results indicated that the TACE group had a median survival of 416 days compared to 229 days for the non-TACE group, suggesting TACE with DEBIRI significantly improves survival outcomes for these patients.*
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This study evaluated how implant design features influence osseointegration. Two implant macrogeometries and surface treatments were evaluated: progressive buttress threads with an SLActive surface (SLActive/BL), and inner and outer trapezoidal threads with a nanohydroxyapatite coating over a dual acid-etched surface (Nano/U). Implants were placed in the right ilium of 12 sheep, and histologic and -metric analyses were conducted after 12 weeks.

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Acute pancreatitis is an uncommon occurrence in acute liver failure. Furthermore, such cases are rarely complicated by parenchymal hemorrhages. Herein, we report the case of a 69-year-old male patient with multiple pancreatic parenchymal hemorrhages concomitant with acute liver failure.

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Medical devices such as orthopedic and dental implants may get infected by bacteria, which results in treatment using antibiotics. Since antibiotic resistance is increasing in society there is a need of finding alternative strategies for infection control. One potential strategy is the use of antimicrobial peptides, AMPs.

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Purpose: The aim of this multi-scale in silico study was to evaluate the influence of resorption cavities on the mechanical properties and load distribution in cortical bone after implant placement with two different drilling protocols.

Material And Methods: Two different micro-scale bone structures were assessed: cortical bone models with cavities (test) and without cavities (control) were designed from μCT data. In a macro-scale model, representing a mandibular ridge, oblique load of 150 N was applied on the implant-abutment.

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This paper is aimed to present a biomaterials perspective in implant therapy that fosters improved bone response and long-term biomechanical competence from surgical instrumentation to final prosthetic rehabilitation. Strategies to develop implant surface texturing will be presented and their role as an ad hoc treatment discussed in light of the interplay between surgical instrumentation and implant macrogeometric configuration. Evidence from human retrieved implants in service for several years and from in vivo studies will be used to show how the interplay between surgical instrumentation and implant macrogeometry design affect osseointegration healing pathways, and bone morphologic and long-term mechanical properties.

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This study evaluated the effect of alumina-blasted/acid-etched (AB/AE) or microabrasive blasting (C3-Microblasted) surface treatment on the osseointegration of commercially-pure Ti (grade II) and Ti-6Al-4V alloy (grade V) implants compared to as-machined surfaces. Surface characterization was performed by scanning electron microscopy and optical interferometry (IFM) to determine roughness parameters (Sa and Sq, n = 3 per group). One-hundred forty-four implants were placed in the radii of 12 beagle dogs, for histological (n = 72, bone-to-implant contact - BIC and bone-area-fraction occupancy -BAFO) and torque to interface failure test at 3 and 6 weeks (n = 72).

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Purpose: To evaluate the effect of misfit at implant-level fixed partial dentures (ILFPDs) and marginal bone support on the generation of implant cracks.

Materials And Methods: This in vitro study included a mechanical fatigue test and finite element analysis. A mechanical cycling loading test was performed using 16 experimental models, each consisting of two parallel implants subdivided into four groups based on the misfit and the supporting bone condition.

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This study investigated the level of magnetic energy around implants possessing a static magnetic field (SMF) and assessed the in vivo influence of SMF on bone regeneration. Implants possessing a sintered neodymium magnet internally were placed in a rabbit femur. An implant without SMF was placed as control.

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The aim of this study was to evaluate the accuracy in volumetric measurements obtained on an experimental model using an intraoral scanner and a gravimetric method. Three identical partial dentate maxillary acrylic models with three fabricated alveolar defects, in anterior and posterior regions, were scanned using an intraoral scanner (20 scans/defects). The defects differed in terms of size and distance of neighbouring teeth.

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This study evaluates the influence of two surface physicochemical modifications on osseointegration parameters of a healing chamber implant design. We examine dental implants with internal and external trapezoidal threads that have the following surface modifications: dual acid etching (DAE) and nano-hydroxyapatite (HA) coating over DAE surface (Nano). We installed implants in the right ilium of sheep and conducted histologic/metric analyses after 3 and 12 wk in vivo.

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Purpose: The purpose of this study was to examine the volumetric alterations and osseointegration properties in the augmented area of the ring technique using different types of bone graft material in sheep mandible bone.

Materials And Methods: Three different materials (columnar forms, 7-mm diameter, 3-mm height) were stabilized using dental implants with a turned surface in the mandible bone of Finnish Dorset cross-bred sheep: group A, autogenous bone; group B, bovine bone; group C, biphasic bone substitute. Animals were euthanized after 5 weeks (N = 6).

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The study evaluated the effects of a Supercritical CO (scCO ) on a commercially available decellularized/delipidized naturally derived porcine pericardium collagen membrane, Vitala®. The Vitala® and scCO treated experimental membranes were evaluated for guided tissue regeneration (GTR) of periodontal tissue in class III furcation defects utilizing a dog model. Physical material characterization was performed by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC).

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This study investigated the effects of osseodensification drilling on the stability and osseointegration of machine-cut and acid-etched endosteal implants in low-density bone. Twelve sheep received six implants inserted into the ilium, bilaterally (n = 36 acid-etched, and n = 36 as-machined). Individual animals received three implants of each surface, placed via different surgical techniques: (1) subtractive regular-drilling (R): 2.

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In the search for the ideal treatment of periodontal disease various non-surgical techniques should be considered. The objective of this study was to evaluate the efficacy of full-mouth scaling (FMS) by clinical and microbiological parameters. 670 individuals were evaluated with 230 subjects meeting the selection criteria and were divided into two groups; 115 subjects treated with FMS and 115 treated with weekly sessions of scaling and root planning (SRP).

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Objective: The aim of this study was to investigate the extent of cortical bone remodeling between two different drilling protocols by means of histomorphometric, µ-CT, and biomechanical analyses.

Material And Methods: A total of 48 implants were inserted into the mandible of six sheep following two drilling protocols: Group A (Test, n = 24), undersized preparation; Group B (Control, n = 24), non-undersized preparation. The animals were euthanatized to obtain 5 and 10 weeks of implantation time.

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To determine whether it is possible to vertically augment bone utilizing a block graft from compressed titanium granules mainly used previously for contained bone defects and to determine whether there exists a difference in osteoconductive properties between the white and the grey granules. In 11 rabbits, 4 titanium blocks were inserted on each rabbit's skull bone according to a randomized scheme. These blocks were made from standardized compressed titanium granules.

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Purpose: To evaluate insertion torque value (ITV) and marginal bone loss (MBL) of an implant system after a clinically perceived bone quality-adapted drilling.

Materials And Methods: This multicenter retrospective study included patients treated with implants, conventionally loaded, in completely healed sites. Operators customized the osteotomy preparation according to radiographic assessment and their perception of bone quality.

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Purpose: Based on the current evidence, the effect of implant macrogeometry has a significant influence on osseointegration. Thus, this study evaluated histomorphometrically and histologically the bone response to acid-etched in comparison to grit-blasted/acid-etched (GB) and machined control (C) surfaced implants possessing identical macrogeometry placed in high-density bone.

Materials And Methods: Implant surface topography of the 3 different surfaced implants has previously been characterized.

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