Daisuke Yasuda's research while affiliated with Showa University and other places

Publications (21)

Article
Full-text available
There is an increasing number of patients with severe liver disease that requires whole organ transplantation or living-related split liver transplantation. This has resulted in a shortage of donor organs, which is particularly problematic and still awaits resolution. Bioartificial liver (BAL) support systems have been developed with the aim of sup...
Article
Technetium-99m-galactosyl human serum albumin (GSA) scintigraphy provides an accurate estimation of the hepatic functional reserve but is not applied after a hepatectomy. The aim of this study was to elucidate the natural course of the remnant hepatic functional reserve (RHFR) after hepatectomy by GSA scintigraphy. Eighty-six patients (partial hepa...
Article
Introduction: Prognoses of patients with untreatable remnant liver recurrence after hepatectomy are very poor in primary liver cancers. All treatments are ineffective and palliative therapy should finally be considered for these patients. Here, hepatic arterial infusion chemotherapy by cisplatin (CDDP) and 5-fiuorouracil (5-FU) (FPIC therapy) again...
Article
Preoperative imaging is widely used and extremely helpful in hepatobiliary surgery. However, transfer of preoperative data to a intraoperative situation is very difficult. Surgeons need intraoperative anatomical information using imaging data for safe and precise operation in the field of hepatobiliary surgery. We have developed a new system for ma...
Article
ICG fluorescence image-guided surgery has been used as a less invasive approach for sentinel lymph node navigation surgery operations. Recently, we found that fluorescence image can obtain immediately after a mixture of ICG and bile juice, which has not been reported yet Furthermore, we happened to observe the ICG fluorescence image of cholangiogra...
Article
In this study, we determined the possible usefulness of sentinel node (SN) mapping guided by indocyanine green (ICG) fluorescence imaging in the management of gastric cancer. ICG fluorescence imaging system has recently been developed for obtaining biochemical information from living tissues. Our series consisted of 56 patients with gastric cancer...
Article
胆嚢癌はその大部分が腺癌であり,内分泌細胞を起源とする悪性腫瘍は稀である.内分泌細胞を起源とする悪性腫瘍は,以前はカルチノイドとして一括に分類されていたが,近年比較的発育が緩徐で予後良好な(古典的)カルチノイドと,発育が早く予後不良な内分泌細胞癌に分類された.この考え方は胃においては確立されつつあるが,胆嚢をはじめ他の臓器では十分に浸透していない.しかし組織学的・生物学的悪性度の違いから予後に大きな違いをきたすため,両者を明確に区別しておくことは重要なことである.今回われわれは,胆嚢において内分泌細胞癌と腺癌が併存した,比較的稀な腺内分泌細胞癌の1例を経験したので,その臨床的特徴について若干の文献的考察を加えて報告する.
Article
Full-text available
In malignant hepatic neoplasm, anatomic resection could improve survival and limit complications from hepatectomy. Our purpose was to develop an intraoperative method for identifying segment and subsegment of the liver with high-sensitivity near-infrared fluorescence imaging. The subjects were 35 patients with hepatic malignant liver disease who re...
Article
Aim: Hepatocyte transplantation is a potential alternative to whole organ liver transplantation. To realize this procedure, a hepatocyte bank system capable of supplying large numbers of hepatocytes must be established. We previously reported an easy method for cryopreserving hepatocytes using a microencapsulation technique. Here, we investigated...
Article
The two-layer method (TLM) has recently been found to be superior to simple cold storage in University of Wisconsin (UW) solution as a means of pancreas preservation for islet transplantation. In this study, we investigated whether TLM would result in better hepatocyte function over UW cold storage and if it could be applied to hepatocyte transplan...
Article
Six cases of deroofing of giant liver cysts by hand-assisted laparoscopic surgery (HALS) and safe and definitive cyst wall ablation with argon plasma coagulation (APC), which was verified by pathological examination of the resected cyst wall, were shown.
Article
Hepatocyte transplantation (HTx) has progressed significantly, but widespread application remains slow because of the shortage of donor hepatocytes. Many sources of hepatic cells have been proposed as alternatives to isolated hepatocytes, but primary isolated hepatocytes continue to be the best source for liver cell-based therapy. To expand the don...
Article
Full-text available
Background : We have attempted early resumption of oral feeding after colorectal cancer surgery by evaluating recovery from gastric ileus (GI) with the use of an opaque X-ray marker. Since this involves X-ray exposure for patients, we studied whether GI recovery could be evaluated ultrasonographically instead of by conventional radiography. Methods...
Chapter
The number of patients with severe liver disease and needing whole organ transplantation or living related split liver transplantation has been increasing. However, the shortage of donor organs is particularly problematic and still awaits resolution. Hepatocyte transplantation may serve as an alternative to organ transplantation for patients with l...
Article
Full-text available
Transplantation of isolated hepatocytes has been proposed to compensate for essential functions lacking in liver failure or for genetic defects that alter a specific liver metabolic pathway. Hepatocyte utilization for these purposes would be facilitated with a reliable, reproducible, and effective method of long-term hepatocyte storage. We have rec...
Article
Full-text available
Encapsulated hepatocyte transplantation is a promising approach to cell transplantation without immunosuppression as an alternative to whole organ liver transplantation. However, the shortage of donor cells for hepatocyte transplantation has not been resolved, and at this critical point, it seems necessary to establish a method of hepatocyte cryopr...
Article
Encapsulated cell therapy might be a promising approach to enable cell transplantation without immunosuppression. This study investigates the viability and hepatic function of hepatocytes encapsulated with alginate/poly-L-lysine in vitro and the effect of the intrasplenic transplantation of cultured encapsulated hepatocytes on survival in 90% hepat...
Article
We investigated the feasibility of correcting the congenital absence of albumin in Nagase analbuminemic rats (NARs) by allogeneic bone marrow cell transplantation (BMT). Seven-week-old male NARs were used as recipients, and 6- to 8-week-old male Sprague-Dawley (SD) rats were used as allograft donors. NARs were divided into three groups: a BMT group...
Article
Recent studies have demonstrated that adult bone marrow cells have a tremendous capacity to differentiate into the epithelial cells of the liver, lung, gastro-intestinal tract, and pancreas. The migration of endothelial cells could also play a role in the response to pancreatic islet cell injury. To address this issue, we investigated whether trans...

Citations

... Moreover, after the implantation, released 5-FU plays relevant functions after diffusing into extracellular tissue fluid; the extremely small amount of the drug entering into the blood through the capillary wall results in low peak concentration, which avoids toxic and side effects. [10][11][12][13] We found that sustained-release 5-FU could inhibit liver cancer and rapid proliferation of residual cancer cells after surgical resection, and sustained-release 5-FU conforming to the concept and requirement of regional chemotherapy and interstitial chemotherapy was operable and valuable. ...
... In this retrospective study, it was found that %FLVpost/pre-op was on average 83% and 91% among patients treated with and without pre-operative chemotherapy, respectively. The latter number (91%) may seem high, but several previous studies 45, 46 have reported similar numbers. Lower numbers are being reported as well, e.g. ...
... Initially introduced by Mirizzi in 1937, intraoperative cholangiography (IOC) is recommended during cholecystectomy to prevent biliary tract injuries [6]. In the field of human medicine, intraoperative near-infrared (NIR) fluorescent cholangiography using a real-time imaging technique with intravenous administration of indocyanine green (ICG) has been widely used to assess fluorescent images of the biliary tract, enabling real-time assessment of fluorescent images of the biliary tract, and reducing biliary tract injury [7]. ...
... to perform regional lymph node dissection using the stained area as a guide has been introduced for the treatment of gastric cancer [6,7]. Several studies have validated the safety and efficacy of this method [8,9]. ...
... Several sites, including the spleen, omentum, subcutaneous spaces, intraperitoneal space, and kidney subcapsular space, have been utilized for implantation. 6,7 However, the optimum site for encapsulated stem cell implantation is unclear. 8,9 In a landmark study, Lim and Sun successfully achieved normoglycemia by micro-encapsulating islet cells in a diabetic rat model. ...
... With multiple GCSF injections spaced out like what was shown in the Verma et al study, CD34+ cell mobilization and its singular role in amelioration of liver related events is difficult to explain. (23) Hence, without proper elucidation of GCSF mediated significant pathways that promote or ameliorate liver damage, studying only CD34+ cells in DC does not improve our understanding of the disease and its mechanisms and cannot be extrapolated to outcomes in such patients.In animal studies on GCSF, an improvement in serum albumin has been shown, with doubtful long-term effect while BMSC engraftment within the liver appears to be a temporary phenomenon.(24) In our patients, similar findings as that described in preclinical studies were reproduced. ...
... For instance, Nyberg et al. 12 compared albumin production per cell, and the albumin production of cryopreserved cells was 2% of that of fresh cells. The results of albumin synthesis analysis in this study are consistent with those of other past researchers [13][14][15] . ...
... Thus, alginate encapsulation provides an approach that combines the advantages of a stirred system with the prevalence of the microenviroment, which is key for differentiation. Moreover, alginate-based hydrogels have been previously applied for toxicological applications and tested with several drug compounds, without drug binding to the scaffold (Lan and starly 2011; Koizumi et al. 2007), making it a suitable system for pre-clinical development applications. ...
... However, no groups have thus far shown functional advantages on hepatocyte grafts. Unlike the previous reports (Hayashi et al., 2007), in the present study, we did not use commercially available Nagase analbuminemic rats (not syngeneic combination), instead we used mutant F344 rats with defective albumin production (kindly provided by Professor Nishikawa) (Fukuoka et al., 2017;Matsumura et al., 2019). Thus, we could focus on physiological engraftment without paying any attention to the immunological influences, since these mutant rats are a syngeneic combination. ...
... For instance, Nyberg et al. 12 compared albumin production per cell, and the albumin production of cryopreserved cells was 2% of that of fresh cells. The results of albumin synthesis analysis in this study are consistent with those of other past researchers [13][14][15] . ...