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Sassa-O'Brien Y, Ohya K, Ikeuchi S, Sanada N, Sanada Y, Kojima A, Yorisaki M, Ebisawa K, Ueda K, Iki H, Mizukami M, Hayashidani H, Fukushi H. Diversity of Chlamydiales detected in pet birds privately kept in individual homes in Japan. J Vet Med Sci 2023; 85:907-911. [PMID: 37460299 PMCID: PMC10539824 DOI: 10.1292/jvms.23-0185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2023] Open
Abstract
Chlamydia-related bacteria of the Chlamydiales order have recently been described as emerging pathogens that cause pneumonia and abortion in animals and humans. We investigated the presence of Chlamydiales using real-time polymerase chain reaction (PCR) by targeting the 16S rRNA gene of a broad range of Chlamydiales in 827 fecal samples from pet birds kept in individual homes in Japan. Of the 827 samples, 493 (59.6%) tested positive for the Chlamydiales 16S rRNA gene in the real-time PCR assay. We determined the nucleic acid sequences of PCR products from 17 Chlamydiales strains. A homology search and phylogenetic analysis using these sequences confirmed that the detected Chlamydiales included C. pecorum and a broad range of Chlamydia-related bacteria. To the best of our knowledge, this is the first study to detect a wide range of Chlamydia-related bacteria in birds.
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Affiliation(s)
- Yukiko Sassa-O'Brien
- Laboratory of Veterinary Infectious Disease, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Kenji Ohya
- Laboratory of Veterinary Microbiology, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
- Present address: National Institute of Health Sciences, Kanagawa, Japan
| | - Shunsuke Ikeuchi
- Laboratory of Veterinary Hygiene, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | | | | | | | | | | | | | | | - Masaya Mizukami
- Mizukami Veterinary Hospital, Dogs, Cats and Birds, Kanagawa, Japan
| | - Hideki Hayashidani
- Laboratory of Veterinary Hygiene, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Hideto Fukushi
- Laboratory of Veterinary Microbiology, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
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Kusuda S, Hashizume R, Yoshikawa A, Kimpara H, Sanada N, Sanada Y. Reproductive status of a female white cockatoo (Cacatua alba) based on relationships among urofecal steroid hormone dynamics, molting, and body weight. J Vet Med Sci 2023; 85:207-213. [PMID: 36574998 PMCID: PMC10017294 DOI: 10.1292/jvms.22-0331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
The detailed reproductive physiology of cockatoos based on gonadal hormone dynamics is unclear. In this study, we aimed to investigate ovarian activity by monitoring urofecal sex steroid hormone profiles in a captive female white cockatoo (Cacatua alba) and to noninvasively reveal basic reproductive physiology by comparing the hormone profiles with the laying dates, body mass changes, and molt progress. Urofeces were collected regularly for approximately 4 years from one female that frequently laid unfertilized eggs under single-rearing conditions. Urofecal progesterone (P4) and estradiol-17β (E2) were measured by enzyme immunoassay. In addition, body mass and the number of fallen feathers were measured periodically. The urofecal P4 concentration peaked at an average of 17.7 days after the start of the rise in urofecal E2 concentration, and egg laying began on the day after the peak urofecal P4 concentration. The clutch size was usually two eggs, with an average interval of 4.5 days between eggs in each egg-laying cycle. There was a significant correlation between the dynamics of E2 concentration in urofeces and body mass. The results strongly suggest that E2 and P4 reflect the follicle growth and ovulation status, respectively, and that noninvasive monitoring of hormone dynamics using urofeces can accurately capture ovarian activity in the white cockatoo. Furthermore, changes in body mass can predict follicular growth, and reproduction and molt are antagonistic.
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Affiliation(s)
- Satoshi Kusuda
- Laboratory of Animal Reproduction, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan.,Graduate School of Natural Science and Technology, Gifu University, Gifu, Japan.,The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan
| | - Ryoko Hashizume
- Graduate School of Natural Science and Technology, Gifu University, Gifu, Japan
| | - Akari Yoshikawa
- Laboratory of Animal Reproduction, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
| | - Hiromu Kimpara
- The United Graduate School of Agricultural Science, Gifu University, Gifu, Japan
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Kozuki E, Arima Y, Matsui T, Sanada Y, Ando S, Sunagawa T, Oishi K. Human psittacosis in Japan: notification trends and differences in infection source and age distribution by gender, 2007 to 2016. Ann Epidemiol 2020; 44:60-63. [PMID: 32253059 DOI: 10.1016/j.annepidem.2020.03.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 01/12/2020] [Accepted: 03/08/2020] [Indexed: 10/24/2022]
Abstract
PURPOSE Psittacosis is a bacterial zoonosis caused by Chlamydia (Chlamydophila) psittaci that infects birds. Although potentially fatal, infections can be reduced by controlling the source of infection. We therefore described the epidemiology of psittacosis, focusing on the infection source. METHODS We descriptively analyzed psittacosis cases reported through national surveillance in Japan from 2007 to 2016. We also analyzed Chlamydia psittaci prevalence among captive psittaciformes during the same period. RESULTS One hundred eleven cases were reported, and the annual number and notification rate of psittacosis declined. While 58% were male and the median age was 61 years, the median age differed by gender (males: 63 years, females: 53 years), with more female cases in those aged <50 years. In addition, the most common infection source differed by gender (men: columbiformes; women: psittaciformes). The decline in notifications was associated with a decline in psittaciformes-associated cases, with a concomitant decline in female cases. The prevalence of C. psittaci among captive psittaciformes also decreased over the period. CONCLUSIONS We found important differences in the epidemiology of psittacosis by gender, and the recent decrease in notifications correlated with decreasing C. psittaci prevalence in birds. Risk communications for psittacosis should consider the current epidemiology regarding gender, age, and infection source.
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Affiliation(s)
- Eru Kozuki
- Field Epidemiology Training Program, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yuzo Arima
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan.
| | - Tamano Matsui
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Yasuyuki Sanada
- Companion Bird Laboratories, Bird's Hospital Bird House, Chiba, Japan
| | - Shuji Ando
- Department of Virology I, National Institute of Infectious Diseases, Tokyo, Japan
| | - Tomimasa Sunagawa
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - Kazunori Oishi
- Infectious Disease Surveillance Center, National Institute of Infectious Diseases, Tokyo, Japan
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Sasaki M, Sanada Y, Yamamoto A. APPLICATION OF THE FOREST SHIELDING FACTOR TO THE MAXIMUM-LIKELIHOOD EXPECTATION MAXIMIZATION METHOD FOR AIRBORNE RADIATION MONITORING. Radiat Prot Dosimetry 2019; 184:400-404. [PMID: 31165889 DOI: 10.1093/rpd/ncz095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The maximum-likelihood expectation maximization (ML-EM) method is expected to improve the accuracy of airborne radiation monitoring using an unmanned aerial vehicle. The accuracy of the ML-EM method depends on various parameters, including detector efficiency, attenuation factor, and shielding factor. In this study, we evaluate the shielding factor of trees based on several field radiation measurements. From the actual measurement, the shielding factors were well correlated with the heights of the trees. The evaluated shielding factors were applied to the ML-EM method in conjunction with the measured data obtained from above the Fukushima forest. Compared with the conventional methods used for calculating the dose rate, the proposed method is found to be more reliable.
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Affiliation(s)
- M Sasaki
- Sector of Fukushima Research and Development, Japan Atomic Energy Agency, 45-169 Sukakeba, Minamisoma, Fukushima, Japan
| | | | - A Yamamoto
- Department of Applied Energy, Nagoya University, Graduate School of Engineering, Nagoya, Japan
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Moore G, Park J, Bangs N, Gulick S, Tobin H, Nakamura Y, Saito S, Tsuji T, Yoro T, Tanaka H, Uraki S, Kido Y, Sanada Y, Kuramoto S, Taira A. Structural and seismic stratigraphic framework of the NanTroSEIZE Stage 1 transect. NanTroSEIZE Stage 1 2019. [DOI: 10.2204/iodp.proc.314315316.102.2009] [Citation(s) in RCA: 107] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Kawano Y, Sanada Y, Urahashi T, Ihara Y, Okada N, Yamada N, Hirata Y, Katano T, Taniai N, Matsuda A, Miyashita M, Yoshida H, Mizuta K. Transition of Spleen Volume Long After Pediatric Living Donor Liver Transplantation for Biliary Atresia. Transplant Proc 2018; 50:2718-2722. [PMID: 30401384 DOI: 10.1016/j.transproceed.2018.03.071] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/02/2018] [Indexed: 01/10/2023]
Abstract
PURPOSE After undergoing the Kasai procedure for biliary atresia (BA), most patients develop severe splenomegaly that tends to be improved by liver transplantation. However, fluctuations in splenic volume long after transplantation remain to be elucidated. PATIENTS AND METHODS Seventy-one consecutive patients who had undergone pediatric living donor liver transplantation (LDLT) for BA were followed up in our outpatient clinic for 5 years. They were classified into 3 groups according to their clinical outcomes: a good course group (GC, n = 41) who were maintained on only 1 or without an immunosuppressant, a liver dysfunction group (LD, n = 18) who were maintained on 2 or 3 types of immunosuppressants, and a vascular complication group (VC, n = 11). Splenic and hepatic volumes were calculated by computed tomography in 464 examinations and the values compared before and after the treatment, especially in the VC group. RESULTS Splenic volume decreased exponentially in the GC group, with splenic volume to standard spleen volume ratio (SD) being 1.59 (0.33) 5 years after liver transplantation. Splenic volume to standard spleen volume ratios were greater in the VC and LD groups than in the GC group. Patients in the VC group with portal vein stenosis developed liver atrophy and splenomegaly, whereas those with hepatic vein stenosis developed hepatomegaly and splenomegaly. Interventional radiation therapy tended to improve the associated symptoms. CONCLUSIONS Fluctuations in splenic volume long after pediatric LDLT for BA may reflect various clinical conditions. Evaluation of both splenic and hepatic volumes can facilitate understanding clinical conditions following pediatric LDLT.
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Affiliation(s)
- Y Kawano
- Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, Chiba, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Taniai
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - A Matsuda
- Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, Chiba, Japan
| | - M Miyashita
- Department of Surgery, Nippon Medical School Chiba Hokusou Hospital, Chiba, Japan
| | - H Yoshida
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
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Okada N, Sanada Y, Urahashi T, Ihara Y, Yamada N, Hirata Y, Katano T, Otomo S, Ushijima K, Mizuta K. Endotoxin Metabolism Reflects Hepatic Functional Reserve in End-Stage Liver Disease. Transplant Proc 2018; 50:1360-1364. [PMID: 29705277 DOI: 10.1016/j.transproceed.2018.01.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 12/29/2017] [Accepted: 01/23/2018] [Indexed: 01/29/2023]
Abstract
BACKGROUND The hepatic clearance of endotoxin (Et) may reflect hepatic functional reserve and ischemic injury to hepatocytes. Therefore, we examined the relationships between Et activity (EA) and the metrics Pediatric End-Stage Liver Disease (PELD)/Model of End-Stage Liver Disease (MELD) score and alanine transaminase (ALT) levels in the postoperative period. METHODS We performed 8 living-donor liver transplantations (LDLTs) for biliary atresia at our center from April 2012 to December 2012. EA was measured by means of an Et activity assay (EAA) in samples collected from a vein 1 day before LDLT, from the portal vein during the intraoperative anhepatic phase, from an artery 1 hour after reperfusion, from an artery on postoperative day (POD) 1, and from an artery or vein at PODs 7 and 14. RESULTS EAs generally remained at low levels. EA at the reperfusion period was significantly lowest. The correlation coefficient for the preoperative MELD/PELD score and the EAA was 0.837, and the corresponding P value was .009; thus, there was a significant relationship between the preoperative MELD/PELD score and the EAA. The correlation coefficients for ALT at POD 1 and EA during the anhepatic phase, at 1 hour after reperfusion, and at POD 1 were 0.64, 0.43, and 0.38, respectively, and the P values for these correlations were .08, .67, and .34. Thus, we observed that ALT and EA generally tended to be somewhat directly correlated, but no significant relationships between these 2 metrics were observed. CONCLUSIONS Endotoxin metabolism reflects the hepatic functional reserve capacity of end-stage liver disease.
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Affiliation(s)
- N Okada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - S Otomo
- Department of Pharmacy, Jichi Medical University Hospital, Tochigi, Japan
| | - K Ushijima
- Department of Clinical Pharmacy, Jichi Medical University, Tochigi, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
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Hirata Y, Sanada Y, Urahashi T, Ihara Y, Yamada N, Okada N, Katano T, Otomo S, Ushijima K, Mizuta K. Antibody Drug Treatment for Steroid-Resistant Rejection After Pediatric Living Donor Liver Transplantation: A Single-Center Experience. Transplant Proc 2018; 50:60-65. [PMID: 29407332 DOI: 10.1016/j.transproceed.2017.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Accepted: 11/13/2017] [Indexed: 01/15/2023]
Abstract
BACKGROUND Antibody drugs have been used to treat steroid-resistant rejection (SRR) after liver transplantation. Although anti-thymocyte globulin has been used for SRR after liver transplantation in place of muromonab-CD3 since 2011 in Japan, the effectiveness of anti-thymocyte globulin after pediatric living-donor liver transplantation (LDLT) has not yet been reported. The aim of this study was to evaluate the effectiveness of antibody drug treatment for SRR after pediatric LDLT in our single center. METHODS Between May 2001 and December 2013, 220 pediatric LDLTs were performed. Initial immunosuppression after LDLT included tacrolimus and methylprednisolone therapy. Acute rejection was diagnosed by use of a liver biopsy and the administration of steroid pulse treatment, and SRR was defined as acute rejection refractory to the steroid pulse treatment. RESULTS Acute rejection and SRR occurred in 74 (33.6%) and 16 patients (7.3%), respectively. The graft survival rates of non-SRR and SRR were 92.4% and 87.5%, respectively (P = .464). The median concentration of alanine aminotransferase before and after the administration of antibody drug was 193.5 mU/mL (range, 8-508) and 78 mU/mL (range, 9-655), respectively (P = .012). The median rejection activity index before and after the administration of antibody drugs was 5 (range, 2-9) and 1 (range, 0-9), respectively (P = .004). After antibody drug treatment, 12 patients had cytomegalovirus infections, 2 patients had Epstein-Barr virus infections, 3 patients had respiratory infections, and 1 patient had encephalitis. The cause of death in 1 patient with SRR was recurrence of infant fulminant hepatic failure. CONCLUSIONS Antibody drug treatment for SRR after pediatric LDLT is safe and effective.
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Affiliation(s)
- Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
| | - S Otomo
- Department of Pharmacy, Jichi Medical University Hospital, Shimotsuke City, Japan
| | - K Ushijima
- Department of Clinical Pharmacology, Jichi Medical University, Shimotsuke City, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Japan
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Hirata Y, Sanada Y, Urahashi T, Ihara Y, Yamada N, Okada N, Tashiro M, Katano T, Otomo S, Ushijima K, Mizuta K. Relationship Between Graft Liver Function and the Change of Graft Liver and Spleen Volumes After Technical Variant Liver Transplantation. Transplant Proc 2017; 48:1105-9. [PMID: 27320567 DOI: 10.1016/j.transproceed.2015.12.089] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 12/30/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND Although there have been a few reports describing the changes of graft liver and spleen volumes after liver transplantation (LT), little is known about the relationship between graft liver function and the changes of these volumes after technical variant liver transplantation (TVLT). We therefore performed a retrospective study to investigate the relationship between graft liver function and these volumes after TVLT. METHODS We retrospectively investigated the cases of 140 TVLT procedures that were performed in our department between July 1987 and October 2012 and in which follow-up was conducted at our department. We calculated the graft liver volume to standard liver volume (GV/SLV) ratio, the spleen volume to standard spleen volume (SV/SSV) ratio, and the spleen volume to graft liver volume (S/L) ratio by CT volumetry. We clarified the relationship between graft liver function (according to the pathological findings) and the graft liver and spleen volumes at 2, 5, and 10 years after TVLT. RESULTS In the normal liver function group, the GV/SLV, SV/SSV, and S/L ratios decreased until 6 months after TVLT and then converged at 10 years after TVLT to 0.95, 1.27, and 0.27, respectively. In the graft liver failure group, the GV/SLV, SV/SSV, and S/L ratios at 10 years after TVLT were 0.67, 5.01, and 1.55, respectively. A significant correlation was observed between the GV/SLV ratio and the presence of mild liver fibrosis at 2 and 5 years after TVLT (P = .03 and P = .04, respectively). CONCLUSIONS Post-transplant CT-volumetry is a noninvasive and effective means of evaluating graft liver status.
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Affiliation(s)
- Y Hirata
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - M Tashiro
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - T Katano
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - S Otomo
- Department of Pharmacy, Jichi Medical University Hospital, Shimotsuke City, Tochigi, Japan
| | - K Ushijima
- Department of Clinical Pharmacology, Jichi Medical University, Shimotsuke City, Tochigi, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan
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Kawano Y, Mizuta K, Sanada Y, Urahashi T, Ihara Y, Okada N, Yamada N, Sasanuma H, Sakuma Y, Taniai N, Yoshida H, Kawarasaki H, Yasuda Y, Uchida E. Complementary Indicators for Diagnosis of Hepatic Vein Stenosis After Pediatric Living-donor Liver Transplantation. Transplant Proc 2017; 48:1156-61. [PMID: 27320577 DOI: 10.1016/j.transproceed.2015.12.114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/30/2015] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Although hepatic vein stenosis after liver transplantation is a rare complication, the complication rate of 1% to 6% is higher in pediatric living-donor liver transplantation than that in other liver transplantation cases. Diagnosis is very important because this complication can cause hepatic congestion that develops to liver cirrhosis, graft loss, and patient loss. However, this is unlikely in cases where there are no ascites or hypoalbuminemia. OBJECTIVES Eleven of 167 patients who had undergone pediatric living-donor liver transplantation were identified in the outpatient clinic at Jichi Medical University as having suffered from hepatic vein stenosis, and were enrolled in the study. METHODS We conducted a retrospective study in which we reviewed historical patient records to investigate the parameters for diagnosis and examine treatment methods and outcomes. RESULTS The 11 patients were treated with 16 episodes of balloon dilatation. Three among these received retransplantation and another 2 cases required the placement of a metallic stent at the stenosis. Histological examination revealed severe fibrosis in four of nine patients who had a liver biopsy, with mild fibrosis revealed in the other five grafts. Furthermore, hepatomegaly and splenomegaly diagnosed by computed tomography, elevated levels of hyarulonic acid, and/or a decrease in calcineurin inhibitor clearance were found to be pathognomonic at diagnosis, and tended to improve after treatment. CONCLUSIONS Diagnosis of hepatic vein stenosis after liver transplantation can be difficult, so careful observation is crucial to avoid the risk of acute liver dysfunction. Comprehensive assessment using volumetry of the liver and spleen and monitoring of hyarulonic acid levels and/or calcineurin inhibitor clearance, in addition to some form of imaging examination, is important for diagnosis and evaluation of the effectiveness of therapy.
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Affiliation(s)
- Y Kawano
- Department of Surgery, Nippon Medical School, Tokyo, Japan.
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - H Sasanuma
- Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Sakuma
- Department of Surgery, Jichi Medical University, Tochigi, Japan
| | - N Taniai
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - H Yoshida
- Department of Surgery, Nippon Medical School, Tokyo, Japan
| | - H Kawarasaki
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Yasuda
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan
| | - E Uchida
- Department of Surgery, Nippon Medical School, Tokyo, Japan
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Masunaga S, Tano K, Sanada Y, Sakurai Y, Tanaka H, Suzuki M, Maruhashi A, Ono K. Radiosensitivity and Capacity to Recover from Radiation-Induced Damage in Pimonidazole-Unlabeled Oxygenated Intratumor Quiescent Cells Depend on p53 Status of Tumor Cells. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Masunaga S, Tano K, Sanada Y, Sakurai Y, Tanaka H, Suzuki M, Kondo N, Narabayashi M, Watanabe T, Nakagawa Y, Maruhashi A, Ono K. The effect of fractionated administration of thalidomide at γ-ray irradiation on tumor response and lung metastasis. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30148-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Inagaki F, Hinrichs KU, Kubo Y, Bowles MW, Heuer VB, Hong WL, Hoshino T, Ijiri A, Imachi H, Ito M, Kaneko M, Lever MA, Lin YS, Methé BA, Morita S, Morono Y, Tanikawa W, Bihan M, Bowden SA, Elvert M, Glombitza C, Gross D, Harrington GJ, Hori T, Li K, Limmer D, Liu CH, Murayama M, Ohkouchi N, Ono S, Park YS, Phillips SC, Prieto-Mollar X, Purkey M, Riedinger N, Sanada Y, Sauvage J, Snyder G, Susilawati R, Takano Y, Tasumi E, Terada T, Tomaru H, Trembath-Reichert E, Wang DT, Yamada Y. DEEP BIOSPHERE. Exploring deep microbial life in coal-bearing sediment down to ~2.5 km below the ocean floor. Science 2015. [PMID: 26206933 DOI: 10.1126/science.aaa6882] [Citation(s) in RCA: 154] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Microbial life inhabits deeply buried marine sediments, but the extent of this vast ecosystem remains poorly constrained. Here we provide evidence for the existence of microbial communities in ~40° to 60°C sediment associated with lignite coal beds at ~1.5 to 2.5 km below the seafloor in the Pacific Ocean off Japan. Microbial methanogenesis was indicated by the isotopic compositions of methane and carbon dioxide, biomarkers, cultivation data, and gas compositions. Concentrations of indigenous microbial cells below 1.5 km ranged from <10 to ~10(4) cells cm(-3). Peak concentrations occurred in lignite layers, where communities differed markedly from shallower subseafloor communities and instead resembled organotrophic communities in forest soils. This suggests that terrigenous sediments retain indigenous community members tens of millions of years after burial in the seabed.
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Affiliation(s)
- F Inagaki
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - K-U Hinrichs
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - Y Kubo
- Center for Deep-Earth Exploration, JAMSTEC, Yokohama 236-0061, Japan. Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan
| | - M W Bowles
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - V B Heuer
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - W-L Hong
- College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97331, USA
| | - T Hoshino
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - A Ijiri
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - H Imachi
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Subsurface Geobiological Analysis and Research, JAMSTEC, Yokosuka 237-0061, Japan
| | - M Ito
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - M Kaneko
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Biogeochemistry, JAMSTEC, Yokosuka 237-0061, Japan
| | - M A Lever
- Center for Geomicrobiology, Department of Bioscience, Aarhus University, DK-8000 Aarhus C, Denmark
| | - Y-S Lin
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - B A Methé
- Department of Environmental Genomics, J. Craig Venter Institute, Rockville, MD 20850, USA
| | - S Morita
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8567, Japan
| | - Y Morono
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - W Tanikawa
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Nankoku, Kochi 783-8502, Japan. Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan
| | - M Bihan
- Department of Environmental Genomics, J. Craig Venter Institute, Rockville, MD 20850, USA
| | - S A Bowden
- Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen AB2A 3UE, UK
| | - M Elvert
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - C Glombitza
- Center for Geomicrobiology, Department of Bioscience, Aarhus University, DK-8000 Aarhus C, Denmark
| | - D Gross
- Department of Applied Geosciences and Geophysics, Montanuniversität, 8700 Leoben, Austria
| | - G J Harrington
- School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - T Hori
- Environmental Management Research Institute, AIST, Tsukuba, Ibaraki 305-8569, Japan
| | - K Li
- Department of Environmental Genomics, J. Craig Venter Institute, Rockville, MD 20850, USA
| | - D Limmer
- Department of Geology and Petroleum Geology, School of Geosciences, University of Aberdeen, Aberdeen AB2A 3UE, UK
| | - C-H Liu
- The State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Nanjing, Jiangsu 210093, China
| | - M Murayama
- Center for Advanced Marine Core Research, Kochi University, Nankoku, Kochi 783-8502, Japan
| | - N Ohkouchi
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Biogeochemistry, JAMSTEC, Yokosuka 237-0061, Japan
| | - S Ono
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Y-S Park
- Petroleum and Marine Resources Research Division, Korea Institute of Geoscience and Mineral Resources, Yuseong-gu, Daejeon 305-350, Korea
| | - S C Phillips
- Department of Earth Sciences, University of New Hampshire, Durham, NH 03824, USA
| | - X Prieto-Mollar
- MARUM Center for Marine Environmental Sciences, University of Bremen, D-28359 Bremen, Germany
| | - M Purkey
- Department of Earth and Atmospheric Sciences, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - N Riedinger
- Department of Earth Sciences, University of California Riverside, Riverside, CA 92521, USA
| | - Y Sanada
- Center for Deep-Earth Exploration, JAMSTEC, Yokohama 236-0061, Japan. Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan
| | - J Sauvage
- Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
| | - G Snyder
- Department of Earth Science, Rice University, Houston, TX 77005, USA
| | - R Susilawati
- School of Earth Science, University of Queensland, Brisbane Queensland 4072, Australia
| | - Y Takano
- Research and Development Center for Marine Resources, JAMSTEC, Yokosuka 237-0061, Japan. Department of Biogeochemistry, JAMSTEC, Yokosuka 237-0061, Japan
| | - E Tasumi
- Department of Subsurface Geobiological Analysis and Research, JAMSTEC, Yokosuka 237-0061, Japan
| | - T Terada
- Marine Works Japan, Yokosuka 237-0063, Japan
| | - H Tomaru
- Department of Earth Sciences, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
| | - E Trembath-Reichert
- Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA
| | - D T Wang
- Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Y Yamada
- Research and Development Center for Ocean Drilling Science, JAMSTEC, Yokohama 236-0001, Japan. Department of Urban Management, Graduate School of Engineering, Kyoto University, Kyoto 615-8540, Japan
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Sakai T, Koyanagi M, Nakae N, Notani M, Tano K, Kimura Y, Sanada Y, Kato S, Hirozane N. Muscle activity during knee extension training in the prone position putting the fulcrum in the distal leg in osteoarthritis patients. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Kawano Y, Mizuta K, Sanada Y, Urahashi T, Ihara Y, Okada N, Yamada N, Sasanuma H, Sakuma Y, Taniai N, Yoshida H, Kawarasaki H, Yasuda Y, Uchida E. Risk Factors of Cytomegalovirus Infection After Pediatric Liver Transplantation. Transplant Proc 2014; 46:3543-7. [DOI: 10.1016/j.transproceed.2014.09.150] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 09/15/2014] [Accepted: 09/23/2014] [Indexed: 12/22/2022]
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16
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Sanada Y, Asai S, Ikemoto A, Moriwaki T, Nakamura N, Miyaji M, Zhang-Akiyama QM. Oxidation resistance 1 is essential for protection against oxidative stress and participates in the regulation of aging in Caenorhabditis elegans. Free Radic Res 2014; 48:919-28. [PMID: 24865925 DOI: 10.3109/10715762.2014.927063] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Human oxidation resistance 1 (OXR1) functions in protection against oxidative damage and its homologs are highly conserved in eukaryotes examined so far, but its function still remains uncertain. In this study, we identified a homolog (LMD-3) of human OXR1 in the nematode Caenorhabditis elegans (C. elegans). The expressed LMD-3 was able to suppress the mutator phenotypes of E. coli mutMmutY and mutT mutants. Purified LMD-3 did not have enzymatic activity against 8-oxoG, superoxide dismutase (SOD), or catalase activities. Interestingly, the expression of LMD-3 was able to suppress the methyl viologen or menadione sodium bisulfite-induced expression of soxS and sodA genes in E. coli. The sensitivity of the C. elegans lmd-3 mutant to oxidative and heat stress was markedly higher than that of the wild-type strain N2. These results suggest that LMD-3 protects cells against oxidative stress. Furthermore, we found that the lifespan of the C. elegans lmd-3 mutant was significantly reduced compared with that of the N2, which was resulted from the acceleration of aging. We further examined the effects of deletions in other oxidative defense genes on the properties of the lmd-3 mutant. The deletion of sod-2 and sod-3, which are mitochondrial SODs, extended the lifespan of the lmd-3 mutant. These results indicate that, in cooperation with mitochondrial SODs, LMD-3 contributes to the protection against oxidative stress and aging in C. elegans.
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Affiliation(s)
- Y Sanada
- Department of Zoology, Graduate School of Science, Kyoto University , Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto , Japan
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17
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Wakiya T, Sanada Y, Urahashi T, Ihara Y, Yamada N, Okada N, Toyoki Y, Hakamada K, Mizuta K. Iron overload after pediatric liver transplantation: a case report. Transplant Proc 2014; 46:973-6. [PMID: 24767394 DOI: 10.1016/j.transproceed.2013.09.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 09/20/2013] [Indexed: 10/25/2022]
Abstract
Iron is an essential nutrient for living cells; however, an excessive accumulation of iron leads to organ damage and directly affects systemic immunity. Iron overload is clinically classified as hereditary or secondary. Most of secondary iron overload is caused by frequent blood transfusions because there is no active mechanism to excrete iron from the body. As recommended in various guidelines, chelation therapy is effective for reducing iron burden and improving organ function. There have been few reports on iron overload through blood transfusion during the perioperative period of liver transplantation. This report presents a case of iron overload due to repeated transfusions after pediatric liver transplantation managed by chelation therapy. The patient, an 11-month-old female with biliary atresia, underwent living donor liver transplantation. She revealed refractory anemia and required frequent blood transfusion. Both serum ferritin and transferrin saturation tended to increase after repeated transfusions, leading to secondary iron overload. Iron chelation therapy was started to prevent progression to organ failure and infection due to iron overload, and yielded a favorable outcome. It is crucial to consider the possibility of secondary iron overload and to achieve early detection and treatment to avoid progression to irreversible organ damage.
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Affiliation(s)
- T Wakiya
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan; Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan.
| | - Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Y Ihara
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - N Yamada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - N Okada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Y Toyoki
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - K Hakamada
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, Hirosaki, Aomori, Japan
| | - K Mizuta
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan
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18
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Sakai T, Koyanagi M, Nakae N, Kimura Y, Sanada Y, Nakamura N, Nakata K. EVALUATION OF A NEW QUADRICEPS STRENGTHENING EXERCISE FOR THE PREVENTION OF SECONDARY CARTILAGE INJURY IN PATIENTS WITH PCL INSUFFICIENCY: COMPARISON OF TIBIAL MOVEMENT IN PRONE AND SITTING POSITIONS DURING THE EXERCISE. Br J Sports Med 2014. [DOI: 10.1136/bjsports-2014-093494.257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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19
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Wakiya T, Sanada Y, Mizuta K, Urahashi T, Ihara Y, Yamada N, Okada N, Egami S, Nakata M, Hakamada K, Yasuda Y. A comparison of open surgery and endovascular intervention for hepatic artery complications after pediatric liver transplantation. Transplant Proc 2013; 45:323-9. [PMID: 23375320 DOI: 10.1016/j.transproceed.2012.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2012] [Revised: 07/25/2012] [Accepted: 08/08/2012] [Indexed: 12/13/2022]
Abstract
There are currently 2 major therapeutic options for the treatment of hepatic artery complications: endovascular intervention and open surgery. We herein report a retrospective analysis of 14 pediatric patients with hepatic artery complications after pediatric living donor liver transplantation (LDLT) at our institution. We divided them into an open surgery group and an endovascular intervention group based on their primary treatment, and compared the results and outcomes. We then evaluated which procedure is more effective and less invasive. In the open surgery group, recurrent stenosis or spasm of the hepatic artery occurred in 3 of the 8 patients (37.5%). In the endovascular intervention group, 5 of the 6 patients were technically successfully treated by only endovascular treatment. Of the 5 successfully treated patients, 3 developed recurrent stenosis (60%). There were significant differences in the mean length of the operation for the first treatment of hepatic artery complications (open surgery, 428 minutes vs endovascular intervention, 160 minutes; P = .01) and in the mean value of the posttreatment aspartate aminotransferase (AST)/alanine aminotransferase (ALT) (open surgery > endovascular intervention; P = .04/.05). Although endovascular intervention needs to be examined in further studies to reduce the rate of relapse, it is a less invasive method for the patient and graft than open surgery.
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Affiliation(s)
- T Wakiya
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan.
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Wakiya T, Sanada Y, Urahashi T, Ihara Y, Yamada N, Okada N, Egami S, Sakamoto K, Murayama K, Hakamada K, Yasuda Y, Mizuta K. Living donor liver transplantation from an asymptomatic mother who was a carrier for ornithine transcarbamylase deficiency. Pediatr Transplant 2012; 16:E196-200. [PMID: 22583334 DOI: 10.1111/j.1399-3046.2012.01716.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Liver transplantation (LT) has been adopted as a radical treatment for ornithine transcarbamylase deficiency (OTCD), yielding favorable outcomes. Despite the fact that it is an inheritable disease, a blood relative who is heterozygous for the disorder must sometimes be used as a liver donor for living donor LT. There is ongoing discussion regarding the use of heterozygous donors, however, to our knowledge, no cases where donation was determined based on the Ornithine transcarbamylase (OTC) activity before LT have been reported. Between May 2001 and April 2011, 17 patients were indicated for living donor LT because of OTCD at our facility. There were three cases with heterozygous donor candidate (17.6%). All heterozygous candidates underwent a liver biopsy to measure their OTC activity before LT and made efforts to secure the safety of the both donor and recipient. Two of 3 candidates had headaches sometimes, and their activity was less than 40%, and thus they were not employed as the donor. One candidate with 104.4% activity was employed, yielding favorable outcomes. Our current experience supported the effectiveness of our donation criteria, however it is necessary to collect sufficient data on a large number of patients to confirm the safety of the procedure.
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Affiliation(s)
- T Wakiya
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan.
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21
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Yamada N, Urahashi T, Ihara Y, Sanada Y, Wakiya T, Okada N, Mizuta K. Veno-occlusive disease/sinusoidal obstruction syndrome associated with potential antibody-mediated rejection after pediatric living donor liver transplantation: a case report. Transplant Proc 2012; 44:810-3. [PMID: 22483502 DOI: 10.1016/j.transproceed.2012.01.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A 9-month-old girl with biliary atresia underwent successful living donor liver transplantation from her 42-year-old ABO blood-type incompatible mother. The postoperative course was uneventful until postoperative day (POD) 13 when the recipient displayed an increased volume of drained ascites and decreased her platelet count showing low-velocity portal venous inflow without hepatic venous outflow obstruction. We suspected potential veno-occlusive disease/sinusoidal obstruction syndrome (vod/sos) due to an acute cellular rejection (ACR) episode and performed a liver biopsy (LB). We diagnosed severe episode (Rejection Activity Index Score; P3V3B1 = 7) and started steroid pulse therapy. We performed a second LB on POD 27 because the patient showed weight gain and tender hepatomegaly, diagnosing moderate ACR (P1V3B1 = 5). We started a second course of steroid pulse therapy, but the patient's clinical findings did not improve. On POD 43, her third LB finding showed P1V1B1 with improved processes from ACR, but still displaying severe congestion and fibrotic obliteration of small hepatic veins. We suspected that her immunologic responses were associated with antibody-mediated rejection (AMR) because her anti-HLA class I and class II antibodies were positive by flow panel-reactive antibody method and donor-specific antigen class II and C4d staining were also positive. We added mycophenolate mofetil and administered high-dose intravenous immunoglobulin to control the AMR, and anticoagulant therapy for the VOD/SOS. Her clinical findings and graft venous abnormalities finally improved; she was eventually discharged without sequelae on POD 72.
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Affiliation(s)
- N Yamada
- Department of Transplant Surgery, Jichi, Medical University, Szhimotsuke-shi, Tochigi, Japan.
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Sanada Y, Ushijima K, Mizuta K, Urahashi T, Ihara Y, Wakiya T, Okada N, Yamada N, Egami S, Hishikawa S, Otomo S, Sakamoto K, Yasuda Y, Kawarasaki H. Prediction of Acute Cellular Rejection by Peripheral Blood Eosinophilia in Pediatric Living Donor Liver Transplantation. Transplant Proc 2012; 44:1341-5. [DOI: 10.1016/j.transproceed.2012.01.132] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2011] [Revised: 11/26/2011] [Accepted: 01/31/2012] [Indexed: 11/25/2022]
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Wakiya T, Sanada Y, Mizuta K, Umehara M, Urahashi T, Egami S, Hishikawa S, Nakata M, Hakamada K, Yasuda Y, Kawarasaki H. Hepatic artery reconstruction with the jejunal artery of the Roux-en-Y limb in pediatric living donor liver re-transplantation. Pediatr Transplant 2012; 16:E86-9. [PMID: 21496191 DOI: 10.1111/j.1399-3046.2010.01442.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
When re-anastomosis and re-transplantation becomes necessary after LDLT, arterial reconstruction can be extremely difficult because of severe inflammation and lack of an adequate artery for reconstruction. Frequently, the recipient's HA is not in good condition, necessitating an alternative to the HA. In such cases, the recipient's splenic artery, right gastroepiploic artery or another vessel can be safely used for arterial reconstruction. There have, however, been few reports on using the jejunal artery. Herein, we report our experience with arterial reconstruction using the jejunal artery of the Roux-en-Y limb as an alternative to the HA. A three-yr-old girl who had developed graft failure due to early HA thrombosis after LDLT required re-transplantation. At re-transplantation, an adequate artery for reconstruction was lacking. We reconstructed the artery by using the jejunal artery of the Roux-en-Y limb, as we judged it to be the most appropriate alternative. After surgery, stent was deployed because hepatic blood flow had reduced due to kinking of the anastomosed site, and a favorable outcome was obtained. In conclusion, when an alternative to the HA is required, using the jejunal artery is a feasible alternative.
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Affiliation(s)
- T Wakiya
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan.
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Wakiya T, Sanada Y, Mizuta K, Egami S, Hishikawa S, Nakata M, Hakamada K, Yasuda Y, Kawarasaki H. Interventional radiology for hepatic artery complications soon after living donor liver transplantation in a neonate. Pediatr Transplant 2012; 16:E81-5. [PMID: 21199209 DOI: 10.1111/j.1399-3046.2010.01441.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Early hepatic artery complications after liver transplantation in children, having undergone LDLT, can directly affect graft and recipient outcomes, making early diagnosis and treatment essential. In the past, laparotomy (thrombectomy or reanastomosis) was generally employed to treat early hepatic artery complications. Recently, favorable outcomes of IR have been reported. In children, however, the number of such reports is small. To the best of our knowledge, there is no published report on IR applied to neonates with early hepatic artery complications. We recently succeeded in safely using IR for a neonate with early hepatic artery complications after LDLT and obtained a favorable outcome. This case is presented herein.
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Affiliation(s)
- T Wakiya
- Department of Transplant Surgery, Jichi Medical University, Tochigi, Japan.
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25
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Mizuta K, Urahashi T, Ihara Y, Sanada Y, Wakiya T, Yamada N, Okada N, Egami S, Kawarasaki H. Varicella Zoster Virus Disease After Pediatric Living Donor Liver Transplantation: Is It Serious? Transplant Proc 2012; 44:780-3. [DOI: 10.1016/j.transproceed.2012.01.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mizuta K, Urahashi T, Ihara Y, Sanada Y, Wakiya T, Yamada N, Okada N, Egami S, Hishikawa S, Hyodo M, Sakuma Y, Fujiwara T, Kawarasaki H, Yasuda Y. Living Donor Liver Transplantation in Children With Cholestatic Liver Disease: A Single-Center Experience. Transplant Proc 2012; 44:469-72. [DOI: 10.1016/j.transproceed.2011.11.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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Urahashi T, Mizuta K, Sanada Y, Wakiya T, Umehara M, Hishikawa S, Hyodo M, Sakuma Y, Fujiwara T, Yasuda Y, Kawarasaki H. Pediatric liver retransplantation from living donors can be considered as a therapeutic option for patients with irreversible living donor graft failure. Pediatr Transplant 2011; 15:798-803. [PMID: 21923885 DOI: 10.1111/j.1399-3046.2011.01572.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Liver retransplantation (re-LT) is required in patients with irreversible graft failure, but it is a significant issue that remains medically, ethically, and economically controversial, especially in living donor liver transplantation (LDLT). The aim of this study was to evaluate the outcome, morbidity, mortality, safety and prognostic factors to improve the outcome of pediatric living donor liver retransplantation (re-LDLT). Six of 172 children that underwent LDLT between January 2001 and March 2010 received a re-LDLT and one received a second re-LDLT. The overall re-LDLT rate was 3.5%. All candidates had re-LDLT after the initial LDLT. The overall actuarial survival of these patients was 83.3% and 83.3% at one and five yr, respectively. These rates are significantly worse than the rates of pediatric first LDLT. Vascular complications occurred in four patients and were successfully treated by interventional radiologic therapy. There were no post-operative biliary complications. One case expired because of hemophagocytic syndrome after re-LDLT. Although pediatric re-LDLT is medically, ethically, and economically controversial, it is a feasible option and should be offered to children with irreversible graft failure. Further investigations, including multicenter studies, are therefore essential to identify any prognostic factors that may improve the present poor outcome after re-LDLT.
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Affiliation(s)
- T Urahashi
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan.
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Sanada Y, Mizuta K, Urahashi T, Ihara Y, Wakiya T, Okada N, Yamada N, Egami S, Hishikawa S, Ushijima K, Otomo S, Sakamoto K, Yasuda Y, Kawarasaki H. Hepatic Arterial Buffer Response after Pediatric Living Donor Liver Transplantation: Report of a Case. Transplant Proc 2011; 43:4019-24. [DOI: 10.1016/j.transproceed.2011.08.094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 08/19/2011] [Indexed: 01/08/2023]
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Wakiya T, Sanada Y, Mizuta K, Umehara M, Urahasi T, Egami S, Hishikawa S, Fujiwara T, Sakuma Y, Hyodo M, Murayama K, Hakamada K, Yasuda Y, Kawarasaki H. Living donor liver transplantation for ornithine transcarbamylase deficiency. Pediatr Transplant 2011; 15:390-5. [PMID: 21585627 DOI: 10.1111/j.1399-3046.2011.01494.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Ornithine transcarbamylase deficiency, the most common urea cycle disorder, causes hyperammonemic encephalopathy and has a poor prognosis. Recently, LT was introduced as a radical OTCD treatment, yielding favorable outcomes. We retrospectively analyzed LT results for OTCD at our facility. Twelve children with OTCD (six boys and six girls) accounted for 7.1% of the 170 children who underwent LDLT at our department between May 2001 and April 2010. Ages at LT ranged from nine months to 11 yr seven months. Post-operative follow-up period was 3-97 months. The post-operative survival rate was 91.7%. One patient died. Two patients who had neurological impairment preoperatively showed no alleviation after LT. All patients other than those who died or failed to show recovery from impairment achieved satisfactory quality-of-life improvement after LT. The outcomes of LDLT as a radical OTCD treatment have been satisfactory. However, neurological impairment associated with hyperammonemia is unlikely to subside even after LT. It is desirable henceforth that more objective and concrete guidelines for OTCD management be established to facilitate LDLT with optimal timing while avoiding the risk of hyperammonemic episodes.
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Affiliation(s)
- T Wakiya
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke, Tochigi, Japan.
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Mizuta K, Sanada Y, Wakiya T, Urahashi T, Umehara M, Egami S, Hishikawa S, Okada N, Kawano Y, Saito T, Hayashida M, Takahashi S, Yoshino H, Shimizu A, Takatsuka Y, Kitamura T, Kita Y, Uno T, Yoshida Y, Hyodo M, Sakuma Y, Fujiwara T, Ushijima K, Sugimoto K, Ohmori M, Ohtomo S, Sakamoto K, Nakata M, Yano T, Yamamoto H, Kobayashi E, Yasuda Y, Kawarasaki H. Living-donor liver transplantation in 126 patients with biliary atresia: single-center experience. Transplant Proc 2011; 42:4127-31. [PMID: 21168643 DOI: 10.1016/j.transproceed.2010.11.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To describe our experience with 126 consecutive living-donor liver transplantation (LDLT) procedures performed because of biliary atresia and to evaluate the optimal timing of the operation. PATIENTS AND METHODS Between May 2001 and January 2010,126 patients with biliary atresia underwent 130 LDLT procedures. Mean (SD) patient age was 3.3 (4.2) years, and body weight was 13.8 (10.7) kg. Donors included 64 fathers, 63 mothers, and 3 other individuals. The left lateral segment was the most commonly used graft (75%). Patients were divided into 3 groups according to body weight: group 1, less than 8 kg (n = 40); group 2,8 to 20 kg (n = 63); and group 3, more than 20 kg (n = 23). Medical records were reviewed retrospectively. Follow up was 4.5 (2.7) years. RESULTS All group 3 donors underwent left lobectomy, and all group 1 donors underwent left lateral segmentectomy. No donors required a second operation or died. Comparison of the 3 groups demonstrated that recipient Pediatric End-Stage Liver Disease score in group 1 was highest, operative blood loss in group 2 was lowest (78 mL/kg), and operative time in group 3 was longest (1201 minutes). Hepatic artery complications occurred more frequently in group 1 (17.9%), and biliary stenosis (43.5%) and gastrointestinal perforation (8.7%) occurred more frequently in group 3. The overall patient survival rates at 1, 5, and 9 years was 98%, 97%, and 97%, respectively. Five-year patient survival rate in groups 1,2, and 3 were 92.5%, 100%, and 95.7%, respectively. Gastrointestinal perforation (n = 2) was the primary cause of death. CONCLUSIONS Living-donor liver transplantation is an effective treatment of biliary atresia, with good long-term outcome. It seems that the most suitable time to perform LDLT to treat biliary atresia is when the patient weighs 8 to 20 kg.
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Affiliation(s)
- K Mizuta
- Liver Transplant Team, Jichi Medical University, Shimotsuke-shi, Tochigi-ken, 329-0498, Japan.
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Sanada Y, Mizuta K, Urahashi T, Umehara M, Wakiya T, Okada N, Hayashida M, Egami S, Hishikawa S, Kawano Y, Ushijima K, Otomo S, Sakamoto K, Fujiwara T, Sakuma Y, Hyodo M, Yasuda Y, Kawarasaki H. Management of intra-abdominal drain after living donor liver transplantation. Transplant Proc 2011; 42:4555-9. [PMID: 21168736 DOI: 10.1016/j.transproceed.2010.09.159] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2010] [Revised: 08/13/2010] [Accepted: 09/28/2010] [Indexed: 12/25/2022]
Abstract
BACKGROUND There have been few reports on the management of intra-abdominal drains after living donor liver transplantation (LDLT). We retrospectively investigated changes in ascitic data related to management of an intra-abdominal drain. PATIENTS AND METHODS Between March 2008 and June 2009, we performed 28 LDLT. On the first and the fifth postoperative day (POD) after LDLT, we examined the number of ascites cells and cell fractions as well as performed biochemical examination and cultures. RESULTS The day of removal of the drain for massive ascites (10 mL/kg/d or more) was 14.2 ± 5.4 POD; for less than 10 mL/kg/d it was 8.7 ± 1.9 POD (P < .001). Nine patients were ascites culture positive; long-term placement of the drain caused an infection in two patients. CONCLUSIONS When the amount of ascitic fluid on the fifth POD after LDLT was small, it was important to assess the properties of the ascitic fluid because of the possibility of a drain infection or of poor drainage. If the ascitic neutrophil count is less than 250/mm(3) or the examined ascites is normal, intra-abdominal drains should be removed.
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Affiliation(s)
- Y Sanada
- Department of Transplant Surgery, Jichi Medical University, Shimotsuke City, Tochigi, Japan.
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Sanada Y, Kamiyama H, Iwaisako K, Yoshimine T, Kato A. "Bonnet" bypass to proximal trunk of middle cerebral artery with a radial artery interposition graft: technical note. Minim Invasive Neurosurg 2010; 53:203-6. [PMID: 21132614 DOI: 10.1055/s-0030-1263109] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Anastomosis of the superficial temporal artery (STA) to the middle cerebral artery (MCA) is useful for treating certain patients with internal carotid artery occlusion or MCA occlusion. However, in the case of common carotid artery (CCA) occlusion, since the blood flow in the STA is insufficient, another artery should be used as the donor artery. The cortical branches of the MCA are usually selected as recipients in the STA-MCA bypass. However, the intracranial vascular filling gradually increases over a few months after conventional cortical MCA bypass grafting, while early or even immediate vascular filling is observed after proximal MCA bypass grafting. This study aims to develop an elongation technique of the contralateral STA to reach the proximal segment of the ipsilateral MCA. METHODS Anastomosis of the contralateral STA to the secondary trunk of the ipsilateral MCA was performed in 2 patients with occlusion of the CCA and ipsilateral vertebral artery (VA). The contralateral STA was extended with a radial artery (RA) graft in order to supply blood to the ischemic area. Elongation of the STA by using an RA interposition graft sufficiently lengthens the graft to enable its anastomosis with the contralateral M2 segment. Postoperative imaging revealed good bypass patency even at 1 year after the surgery. CONCLUSION This novel technique of performing the "bonnet" bypass was effective in treating both CCA and ipsilateral VA occlusion; moreover, this procedure of elongation of the STA can increase candidates of the recipient, and enables one to perform a double bypass to the anterior cerebral artery (ACA) or posterior cerebral artery (PCA).
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Affiliation(s)
- Y Sanada
- Department of Neurosurgery, Kinki University Medical School, 377-2 Ohno-Higashi, Osaka-Sayama, Japan.
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Mizuta K, Yasuda Y, Egami S, Sanada Y, Wakiya T, Urahashi T, Umehara M, Hishikawa S, Hayashida M, Hyodo M, Sakuma Y, Fujiwara T, Ushijima K, Sakamoto K, Kawarasaki H. Living donor liver transplantation for neonates using segment 2 monosubsegment graft. Am J Transplant 2010; 10:2547-52. [PMID: 20977646 DOI: 10.1111/j.1600-6143.2010.03274.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The prognosis of liver transplantation for neonates with fulminant hepatic failure (FHF) continues to be extremely poor, especially in patients whose body weight is less than 3 kg. To address this problem, we have developed a safe living donor liver transplantation (LDLT) modality for neonates. We performed LDLTs with segment 2 monosubsegment (S2) grafts for three neonatal FHF. The recipient age and body weight at LDLT were 13-27 days, 2.59-2.84 kg, respectively. S2 or reduced S2 grafts (93-98 g) obtained from their fathers were implanted using temporary portacaval shunt. The recipient portal vein was reconstructed at a more distal site, such as the umbilical portion, to have the graft liver move freely during hepatic artery (HA) reconstruction. The recipient operation time and bleeding were 11 h 58 min-15 h 27 min and 200-395 mL, respectively. The graft-to-recipient weight ratio was 3.3-3.8% and primary abdominal wall closure was possible in all cases. Although hepatic artery thrombosis occurred in one case, all cases survived with normal growth. Emergency LDLT with S2 grafts weighing less than 100 g can save neonates with FHF whose body weight is less than 3 kg. This LDLT modality using S2 grafts could become a new option for neonates and very small infants requiring LT.
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Affiliation(s)
- K Mizuta
- Department of Transplant Surgery Department of Surgery Department of Clinical Pharmacology Department of Pharmacy, Jichi Medical University, Shimotsuke, Tochigi, Japan.
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Abstract
AIMS The aims of this study were to investigate the mechanism of atrophic change in ileal mucosa supplied with an elemental diet (ED) and to assess the value of supplemented fat emulsion in the prevention of atrophic change. MATERIALS AND METHODS In experiment 1, 25 male Wistar rats with a body weight of 160-180 g were divided into 3 groups. The first group was fed regular rat chow (Control group, n=5). The second group was given ED containing 0.6% long-chain triglycerides (ED group, n=10). The third group was provided with fat-enriched ED (FED) containing 3.5% long-chain triglycerides (FED group, n=10). Each group received an isocaloric diet (300 kcal/kg/day). 4 weeks later, after euthanization, ileal samples were taken for light and electron microscopic examinations. The morphological changes of the intestinal mucosa and the crypt cell proliferation rate (CCPR) were determined. In experiment 2, to determine the site of fat absorption, 9 rats were fed ED for 1 week. After 24 h of food deprivation, all rats were given 2 ml of FED through a gastric tube. Then 1, 2, and 3 h(s) later, groups of 3 rats each were euthanized, and the total small intestine was obtained from each rat. The proximal and distal jejunum and distal ileum were stained with oil red O. RESULTS In experiment 1, the samples had almost the same morphological appearance irrespective of the type of feeding. The CCPR was significantly diminished in the ED group compared with the Control group, while there was no statistical difference between the FED and Control groups. In experiment 2, the oil red O stain was positive in the proximal and distal jejunum, but was completely negative in the distal ileum. CONCLUSIONS The introduction of ED does not soon result in an atrophic morphological change of the ileum but will decrease the CCPR. An additive fat emulsion which was rapidly absorbed by the distal jejunum could play a role in maintaining ileal mucosa integrity through some mechanism independent of absorption.
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Affiliation(s)
- S Kawano
- Showa University Fujigaoka Hospital, Department of Pediatric Surgery, Yokohama, Japan.
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Sanada Y, Mizuta K, Kawano Y, Egami S, Hayashida M, Wakiya T, Mori M, Hishikawa S, Morishima K, Fujiwara T, Sakuma Y, Hyodo M, Yasuda Y, Kobayashi E, Kawarasaki H. Living Donor Liver Transplantation for Congenital Absence of the Portal Vein. Transplant Proc 2009; 41:4214-9. [DOI: 10.1016/j.transproceed.2009.08.080] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2008] [Revised: 02/19/2009] [Accepted: 08/17/2009] [Indexed: 01/08/2023]
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Abstract
A case of esophageal carcinosarcoma is described herein. A 58-year-old man presented with dysphagia and was admitted to our hospital. Imaging studies revealed a type 3 tumor in the upper intrathoracic esophagus with direct invasion to the left main bronchus. Analysis of a biopsy specimen revealed carcinosarcoma. The patient underwent esophageal bypass and chemoradiotherapy. Eight months after surgery, he died of esophago-bronchial fistula. Autopsy examination revealed liver metastasis, peritoneal dissemination and intramural metastasis. The sarcomatous component was predominant in the intramural and liver metastatic lesions.
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Affiliation(s)
- Y Sanada
- Department of Surgical Oncology, Research Institution for Radiation Biology and Medicine, Hiroshima, Japan.
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Sanada Y, Oue N, Mitani Y, Yoshida K, Nakayama H, Yasui W. Down-regulation of the claudin-18 gene, identified through serial analysis of gene expression data analysis, in gastric cancer with an intestinal phenotype. J Pathol 2006; 208:633-42. [PMID: 16435283 DOI: 10.1002/path.1922] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Gastric cancer (GC) is one of the most common malignancies worldwide. Genes whose expression is down-regulated in GC may be tumour suppressor genes. In the present study, genes with decreased expression in GC were screened for by serial analysis of gene expression (SAGE) data analysis and reverse transcription (RT)-polymerase chain reaction (PCR), and CLDN18 (encoding claudin-18) was identified. Quantitative RT-PCR revealed that expression of CLDN18 was down-regulated in 13 (56.5%) of 23 GCs. Immunostaining showed that normal gastric mucosa and Paneth cells of the duodenum expressed claudin-18 on cell membranes. Expression of claudin-18 was reduced in several intestinal metaplasias of the stomach. Of 20 samples of gastric adenoma, 18 (90.0%) showed decreased claudin-18 expression. Down-regulation of claudin-18 was observed in 84 of 146 GCs (57.5%) and correlated with poor survival in 65 advanced GCs (p = 0.0346). In addition, expression of the gastric and intestinal phenotypes of GC was examined by immunostaining for MUC5AC, MUC6, MUC2, and CD10. Of 38 GCs showing only the intestinal phenotype, down-regulation of claudin-18 was observed in 28 (73.7%), whereas in the remaining 108 GC cases, down-regulation of claudin-18 was observed in 56 (51.9%) (p = 0.0224). These results indicate that claudin-18 is a good marker of poor survival in GC. Down-regulation of claudin-18 may be involved in GCs with an intestinal phenotype, and may be an early event in gastric carcinogenesis.
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Affiliation(s)
- Y Sanada
- Department of Molecular Pathology, Hiroshima University Graduate School of Biomedical Sciences, Hiroshima, 734-8551, Japan
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Abstract
Congenital H-type tracheoesophageal fistulae in adults are infrequent. In surgery, the essential components (defining, cutting, and suturing the fistula, and preventive interposition of muscle flap) must be performed precisely. We undertook these procedures through a small collar incision. Based on results of preoperative images, the fistula was identified under minimum dissection between the trachea and esophagus. After cutting and suturing the fistula, a sternohyoid muscle flap was interposed.
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Affiliation(s)
- T Suzuki
- Department of Thoracic and Cardiovascular Surgery, Showa University Fujigaoka Hospital, Yokohama, Japan.
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Abstract
Positron emission tomography (PET) is increasingly used to quantify regional hemodynamic and metabolic changes in different animal models. Most of these (multitracer) studies provided important early data on already functionally altered brain tissue, indicating selective vulnerability by a large variability in the functional blood flow threshold of individual neurons. To fill the gap between experimental studies at early time points and rather late clinical studies at well-defined but singular time points, we repeatedly measured cerebral blood flow (CBF), cerebral metabolic rate of oxygen (CMRO2), oxygen extraction rate and cerebral metabolic rate of glucose (CMRglc) in three cats before and up to 28 h after decompressive hemicraniectomy on normal brain tissue. Decompressive hemicraniectomy in the cat decreased CBF, and to a lesser extent CMRO2 and CMRglc 2 h after surgical intervention in normal brain tissue that last for at least 1 day. CBF significantly decreased (p < 0.01) and oxygen extraction fraction (OEF) (p < 0.05) significantly increased. CMRO2 and CMRglc decreased only in regions with most severe CBF reduction. These effects remained for at least a day irrespective of corrective sustaining cranioplasty. The method and data analysis is decreased and discussed in detail in the presented protocol. In conclusion, serial positron emission tomography studies are best suited to repeatedly and non-invasively demonstrate circulatory and biochemical changes by surgical interventions in normal brain tissue for at least one day. The transition of normal brain tissue into misery-perfused or non-viable regions can be followed over time. Such state-of-the-art imaging modalities as sequential high-resolution positron emission tomography provide insight into the dynamic of regional pathophysiology and may thus further justify the development of rational therapeutic strategies for decompressive hemicraniectomy, especially for disease with focal disturbances in cerebral blood flow.
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Affiliation(s)
- B Schaller
- Max-Planck-Institute for Neurological Research, Gleueler Strasse 50, D-50931 Cologne, Germany
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Mase M, Imai K, Sanada Y, Sanada N, Yuasa N, Imada T, Tsukamoto K, Yamaguchi S. Phylogenetic analysis of Newcastle disease virus genotypes isolated in Japan. J Clin Microbiol 2002; 40:3826-30. [PMID: 12354891 PMCID: PMC130906 DOI: 10.1128/jcm.40.10.3826-3830.2002] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We genetically analyzed field isolates of the Newcastle disease (ND) virus isolated in Japan from 1930 to 2001. The coding region of the fusion protein was amplified by reverse transcriptase PCR and directly sequenced. Phylogenetic analysis revealed the presence of viruses belonging to six of the eight known genotypes. It can be concluded from this study that ND outbreaks in Japan have been of multiple etiologies. [All sequences used in this study were sent to DDBJ and assigned accession numbers AB 070382 to AB 074042.]
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Affiliation(s)
- Masaji Mase
- National Institute of Animal Health, 3-1-5 Kannondai, Tsukuba, Ibaraki 305-0856, Japan.
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42
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Nemoto H, Takeuchi S, Yoshizawa Y, Uemichi O, Sasaya S, Yamaguchi M, Makuuchi M, Midorikawa T, Sanada Y, Kumada K, Takizawa K. [Tissue platinum distribution and the effect following intra-arterial injection of cisplatin to metastatic liver cancer--a case report]. Gan To Kagaku Ryoho 2001; 28:1149-53. [PMID: 11525035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
A 63-year-old male with advanced esophageal cancer was admitted to our hospital. He received neoadjuvant chemotherapy with intravenous cisplatin and fluorouracil (5-FU), and underwent resection of the esophagus and placement of a gastric tube. Two months later, multiple metastases appeared in the right lobe of the liver. Intermittent arterial infusion chemotherapy with cisplatin and 5-FU were performed. To selectively infuse the drugs into the right hepatic artery, the left hepatic artery was embolized. Treatment had a marked effect in the right lobe, but new lesions were subsequently discovered in the left lobe. The patient died of pleuritis 27 days after the end of cisplatin infusion and 12 months after surgery. In total, 465 mg of cisplatin and 20 mg of nedaplatin were administered. At autopsy, tissue samples were collected to measure the platinum concentration. The result showed the highest value to be in the right lobe, 4.8 times as high as that in the left lobe. It is suggested that the concentration of platinum in tissue is correlated with the anticancer effect of cisplatin to the tissue, despite of the traditional view that the tissue concentration and the effect are not related.
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Affiliation(s)
- H Nemoto
- Dept. of Surgery, Showa University Fujigaoka Hospital
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43
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Murahama M, Yoshida T, Hayashi F, Ichino T, Sanada Y, Wada K. Purification and characterization of Delta(1)-pyrroline-5-carboxylate reductase isoenzymes, indicating differential distribution in spinach (Spinacia oleracea L.) leaves. Plant Cell Physiol 2001; 42:742-50. [PMID: 11479381 DOI: 10.1093/pcp/pce093] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Delta(1)-Pyrroline-5-carboxylate reductase (P5CR) (EC 1.5.1.2. L-proline: NAD(P)-5-oxidoreductase), the second enzyme in the proline biosynthetic pathway, was purified from spinach (Spinacia oleracea L.) leaves. Following ammonium sulfate fractionation, purification was performed by several chromatographic methods: Blue Cellulofine, DEAE-TOYOPEARL, Sephacryl S-300 HR, and POROS QE/M. Two isoenzymes resolved by anion exchange chromatography were designated P5CR-1 and P5CR-2. Only P5CR-2 was purified from the intact chloroplasts, indicating differential distribution of the isoenzymes. P5CR isoenzymes, P5CR-1 and P5CR-2, are a homopolymer with an apparent molecular mass of 310 kDa, consisting of 10 to 12 subunits of about 28.5 kDa. P5CR-1 and P5CR-2 showed K(m) values of 9 and 19 microM for NADPH and values of 0.122 and 0.162 mM for Delta(1)-pyrroline-5-carboxylate (P5C), respectively. We decided partial amino acid sequences of P5CR-1 which showed the 70 to 80% homology to the deduced amino acid sequences of several plant P5CR cDNAs. Both isoenzymes had much lower affinity for NADH than for NADPH and were inhibited by free ATP and Mg(2+) ion. The inhibition was partially mitigated when ATP and Mg(2+) were added simultaneously to the reaction mixture. Cations at high concentration were inhibitory to P5CR activity. Interestingly, P5CR-2 was more stable to heat treatment at 40 degrees C than P5CR-1.
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Affiliation(s)
- M Murahama
- Department of Biology, Faculty of Science, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan
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Yamaguchi M, Asakawa K, Kuzume M, Nemoto H, Sanada Y, Kumada K. Effects of insulin-like growth factor-1 on Short bowel syndrome without ileocecal valve in rats. Eur Surg Res 2001; 33:291-6. [PMID: 11684836 DOI: 10.1159/000049720] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Insulin-like growth factor-1 (IGF-1) can promote enterocyte proliferation which may be beneficial to postoperative conditions after massive small bowel resection (SBR) including the ileocecal valve (ICV). Wistar rats were subjected to SBR including or preserving ICV and continuously received IGF-1 or saline alone. Nutritional status, enterocyte proliferation, liver damage and hepatic IGF-1 mRNA levels were analyzed. Body weights, serum levels of total protein and transferrin, and enterocyte proliferation were significantly lower after SBR including ICV than preserving it. IGF-1 mRNA levels in the liver were decreased after SBR, especially after SBR including ICV. However, IGF-1 therapy significantly attenuated those decreased levels after SBR including ICV. Furthermore, IGF-1 significantly decreased serum liver transaminase levels which were increased after SBR including ICV. Continuous administration of IGF-1 may be available as a supplemented therapy for short bowel syndrome without ICV.
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Affiliation(s)
- M Yamaguchi
- Department of Surgery, Showa University Fujigaoka Hospital, Yokohama, Japan.
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Yoshizawa Y, Sanada Y. [Nutritional support in children with hepatobiliary diseases]. Nihon Rinsho 2001; 59 Suppl 5:803-7. [PMID: 11439654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Yoshizawa
- Department of Surgery, Showa University Fujigaoka Hospital
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Sanada Y, Yosizawa Y, Chiba M. [Nutritional support in children with cancer]. Nihon Rinsho 2001; 59 Suppl 5:812-4. [PMID: 11439656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Sanada
- Department of Surgery, Showa University Fujigaoka Hospital
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Mase M, Imada T, Sanada Y, Etoh M, Sanada N, Tsukamoto K, Kawaoka Y, Yamaguchi S. Imported parakeets harbor H9N2 influenza A viruses that are genetically closely related to those transmitted to humans in Hong Kong. J Virol 2001; 75:3490-4. [PMID: 11238878 PMCID: PMC114145 DOI: 10.1128/jvi.75.7.3490-3494.2001] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In 1997 and 1998, H9N2 influenza A viruses were isolated from the respiratory organs of Indian ring-necked parakeets (Psittacula Krameri manillensis) that had been imported from Pakistan to Japan. The two isolates were closely related to each other (>99% as determined by nucleotide analysis of eight RNA segments), indicating that H9N2 viruses of the same lineage were maintained in these birds for at least 1 year. The hemagglutinins and neuraminidases of both isolates showed >97% nucleotide identity with those of H9N2 viruses isolated from humans in Hong Kong in 1999, while the six genes encoding internal proteins were >99% identical to the corresponding genes of H5N1 viruses recovered during the 1997 outbreak in Hong Kong. These results suggest that the H9N2 parakeet viruses originating in Pakistan share an immediate ancestor with the H9N2 human viruses. Thus, influenza A viruses with the potential to be transmitted directly to humans may be circulating in captive birds worldwide.
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Affiliation(s)
- M Mase
- Department of Virology, National Institute of Animal Health, Tsukuba, Ibaraki 305-0856, Japan.
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Yamaguchi M, Miyaki M, Iijima T, Matsumoto T, Kuzume M, Matsumiya A, Endo Y, Sanada Y, Kumada K. Specific mutation in exon 11 of c-kit proto-oncogene in a malignant gastrointestinal stromal tumor of the rectum. J Gastroenterol 2001; 35:779-83. [PMID: 11063223 DOI: 10.1007/s005350070038] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Gastrointestinal stromal tumor (GIST) in the distal third of the rectum was detected in a 57-year-old man who underwent an abdominoperineal resection of the rectum. Because the tumor expressed CD34 and c-kit gene product, but did not express smooth muscle actin or S-100 protein, it was diagnosed as an uncommitted type of GIST. Moreover, a specific mutation in the sequence coding the juxtamembrane domain in exon 11 of the c-kit proto-oncogene was revealed by a polymerase chain reaction-single-strand conformation polymorphism method. One year after resection, the patient developed multiple liver metastases. It is suggested that a specific mutation in exon 11 of the c-kit proto-oncogene may have played an essential role in the development of the liver metastases.
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Affiliation(s)
- M Yamaguchi
- Department of Surgery, Showa University Fujigaoka Hospital, Yokohama, Japan
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Nemoto H, Midorikawa T, Nagasaki H, Aida K, Saito M, Sasaya S, Kikuchi H, Sanada Y, Kumada K. [A case of AFP-producing gastric cancer responding to low-dose CPT-11 and low-dose cisplatin combination chemotherapy]. Gan To Kagaku Ryoho 2001; 28:387-90. [PMID: 11265410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
UNLABELLED Gastric cancers that produce alpha feto protein (AFP) usually have a poor prognosis. We report an AFP-producing gastric cancer that showed a partial response to low-dose CPT-11 and low-dose cisplatin combination chemotherapy. AFP-producing gastric cancers successfully treated with chemotherapy have been reported, but to our knowledge this is the first report of successful treatment with low-dose CPT-11 and low-dose cisplatin combination chemotherapy. CASE A 49 year-old woman who had gastric cardiac cancer with esophageal invasion was admitted to our institution. Since AFP-positive cells were demonstrated immunohistochemically in biopsy specimens and levels of AFP in serum were high, AFP-producing cancer was diagnosed. Because of metastasis to Virchow's node and the paraaortic lymph nodes, the tumor was considered unresectable. The patient's poor general condition necessitated chemotherapy with low toxicity and high efficacy. She was treated with low-dose CPT-11 and low-dose cisplatin combination chemotherapy. After two cycles of this treatment, the tumor volume and the serum levels of AFP had decreased markedly. The only side effect of the treatment was leukopenia.
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Affiliation(s)
- H Nemoto
- Dept. of Surgery, Showa University Fujigaoka Hospital
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Yamaguchi M, Yamamoto T, Tate G, Matsumoto T, Matsumiya A, Kuzume M, Sanada Y, Kumada K. Specific detection of epstein-barr virus in inflammatory pseudotumor of the spleen in a patient with a high serum level of soluble IL-2 receptor. J Gastroenterol 2001; 35:563-6. [PMID: 10905367 DOI: 10.1007/s005350070082] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A case of inflammatory pseudotumor of the spleen is described in a 63-year-old woman who presented with an intrasplenic tumor and an elevated serum level of soluble interleukin 2 receptor (sIL-2R). Microscopic examination after removal of the spleen revealed that the tumor was composed of mixed cellular infiltrates, mainly lymphocytes and plasma cells, and spindle-cell proliferation. Epstein-Barr virus (EBV) was specifically detected in the tumor by in situ hybridization for EBV RNA. The serum level of sIL-2R level was normalized after splenectomy. EBV infection may play a role in the development of splenic inflammatory pseudotumor and the elevation of sIL-2R level.
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Affiliation(s)
- M Yamaguchi
- Department of Surgery, Showa University Fujigaoka Hospital,Yokohama, Japan
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