1
|
Kikuchi Y, Watabe S, Yamamoto A, Sato K, Fujinuma W, Kawano J, Yuzawa K, Aso T, Eguchi M, Ishida T, Motoi T, Uozaki H. Periosteal Myxoid Leiomyosarcoma Histologically Mimicking Extraskeletal Myxoid Chondrosarcoma: Report of a Case with Histopathological and Cytopathological Comparison with Extraskeletal Myxoid Chondrosarcoma. Acta Cytol 2021; 65:541-548. [PMID: 34569497 DOI: 10.1159/000518004] [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] [Received: 12/10/2020] [Accepted: 06/18/2021] [Indexed: 11/19/2022]
Abstract
Myxoid leiomyosarcoma (MLS) is a rare variant of leiomyosarcoma, with most cases occurring in the uterus. A case of MLS arising in the periosteal region of the tibia, mimicking extraskeletal myxoid chondrosarcoma (EMC), is described. The evaluation included histological and cytological comparison with EMC. The patient was a 77-year-old man with a palpable mass at the anterior aspect of the right lower leg. After diagnosis by cytopathology and biopsy examination, a wide resection was performed. The resulting cytological smears were composed primarily of spindle-shaped tumor cells in a myxoid and hemorrhagic background. Histologically, the tumor showed abundant myxoid matrix and tumor cells proliferating in a cord-like to reticular pattern, exhibiting a lace-like arrangement that mimicked EMC. Although immunohistochemical findings suggested leiomyosarcoma, a diagnosis of EMC eventually was excluded by the lack of a split signal when assessed for a rearrangement of NR4A3 by chromogenic in situ hybridization. Despite histological similarity to EMC, characteristic cytological findings of EMC such as epithelioid structures with a cord-like pattern and chondroblast-like lacunar structures were not observed in the smears of this patient's MLS. We propose that cytopathological examination of bone and soft tissue lesions is useful as a diagnostic tool in similar cases. A total diagnostic workup, including clinical, radiographic, cytopathological, histopathological, and molecular findings, is needed to ensure an accurate final diagnosis and to reduce diagnostic error.
Collapse
Affiliation(s)
- Yoshinao Kikuchi
- Department of Pathology, Teikyo University School of Medicine, Tokyo, Japan
| | - Shiori Watabe
- Department of Pathology, Teikyo University School of Medicine, Tokyo, Japan
| | - Asako Yamamoto
- Department of Radiology, Teikyo University School of Medicine, Tokyo, Japan
| | - Kenji Sato
- Department of Orthopaedics, Teikyo University School of Medicine, Tokyo, Japan
| | - Wataru Fujinuma
- Department of Orthopaedics, Teikyo University School of Medicine, Tokyo, Japan
| | - Junichi Kawano
- Department of Pathology, Teikyo University School of Medicine, Tokyo, Japan
| | - Kazuhiko Yuzawa
- Department of Pathology, Mizonokuchi Hospital, Teikyo University School of Medicine, Kawasaki, Japan
| | - Tatsuya Aso
- Department of Pathology, Mizonokuchi Hospital, Teikyo University School of Medicine, Kawasaki, Japan
| | - Masanobu Eguchi
- Department of Pathology, Mizonokuchi Hospital, Teikyo University School of Medicine, Kawasaki, Japan
| | - Tsuyoshi Ishida
- Department of Diagnostic Pathology, National Hospital Organization Saitama Hospital, Saitama, Japan
| | - Toru Motoi
- Department of Pathology, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Hiroshi Uozaki
- Department of Pathology, Teikyo University School of Medicine, Tokyo, Japan
| |
Collapse
|
2
|
Jeong J, Ro H, Koo T, Cho Y, Kim M, Shroff S, Yuzawa K, Danguilan R, Ahn C. MON-175 THE DEVELOPMENT OF ASIAN SOCIETY OF TRANSPLANTATION REGISTRY. Kidney Int Rep 2019. [DOI: 10.1016/j.ekir.2019.05.970] [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: 11/16/2022] Open
|
3
|
Suzuki R, Nakamiya Y, Watanabe M, Ando E, Tanichi M, Koga M, Kohno K, Usui J, Yamagata K, Ohkohchi N, Toda H, Saito T, Yoshino A, Takahara S, Yamauchi K, Yuzawa K. Relationship Between Stress Coping Mechanisms and Depression in Kidney Transplant Recipients. Transplant Proc 2019; 51:761-767. [PMID: 30979461 DOI: 10.1016/j.transproceed.2018.12.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 11/02/2018] [Accepted: 12/31/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND It has been reported that transplant recipients are exposed to physical and psychosocial stresses even after transplant surgery and exhibit psychological disorders such as depression. PURPOSE In this study, we extracted trends concerning how recipients of kidney transplants cope with stress, and we also examined how they cope with depression and its countermeasures. METHOD We administered questionnaire surveys to 109 kidney transplant recipients. These included items on personal attributes, medical information, depression, and stress-coping type scales. Statistical analysis was performed using factor analysis and multiple regression analysis. RESULTS Fifteen out of 109 (13.8%) were found to be high-risk patients for depression based on responses to the questionnaire using the depression scale. We extracted 2 factors of stress-coping type, namely Factor 1, "Directly coping with the problem," of patients who try to directly resolve the problem in a positive manner and Factor 2, "Stress-release while avoiding the problem," for those who relieve their feelings in response to the stress without resolving the problem itself. When multiple regression analysis was conducted with the depression scale as the dependent variable and the stress-coping factor as the independent variable, Factor 1 tended to be associated with reduced depression and Factor 2 with increased depression. CONCLUSIONS Results showed that to improve the mental health of those who receive kidney transplants, it is necessary to examine the depression and stress-coping types of such patients at an early stage and carry out education on stress-coping, focusing on resolving the actual problem.
Collapse
Affiliation(s)
- R Suzuki
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan; Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Higashiibaraki, Ibaraki, Japan; Graduate School of Health Management, Keio University, Fujisawa, Kanagawa, Japan; Department of Advanced Technology for Transplantation, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
| | - Y Nakamiya
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Higashiibaraki, Ibaraki, Japan
| | - M Watanabe
- Kanto Gakuin University College of Nursing, Yokohama, Kanagawa, Japan
| | - E Ando
- Department of Social and Environmental Health, Division of Environmental Medicine and Population Sciences, Graduate School of Medicine, Osaka University Suita, Osaka, Japan
| | - M Tanichi
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - M Koga
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - K Kohno
- Hitachino Family Clinic, Ushiku, Ibaraki, Japan
| | - J Usui
- Department of Nephrology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - K Yamagata
- Department of Nephrology, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - N Ohkohchi
- Mito Chuo Hospital, Mito, Ibaraki, Japan
| | - H Toda
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - T Saito
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - A Yoshino
- Department of Psychiatry, National Defense Medical College, Tokorozawa, Saitama, Japan
| | - S Takahara
- Department of Advanced Technology for Transplantation, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan
| | - K Yamauchi
- Graduate School of Health Management, Keio University, Fujisawa, Kanagawa, Japan
| | - K Yuzawa
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Higashiibaraki, Ibaraki, Japan
| |
Collapse
|
4
|
Nishimoto-Kakiuchi A, Netsu S, Matsuo S, Hayashi S, Ito T, Okabayashi S, Yasmin L, Yuzawa K, Kondoh O, Kato A, Suzuki M, Konno R, Sankai T. Characteristics of histologically confirmed endometriosis in cynomolgus monkeys. Hum Reprod 2016; 31:2352-9. [PMID: 27591226 PMCID: PMC5027930 DOI: 10.1093/humrep/dew209] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 07/26/2016] [Indexed: 11/24/2022] Open
Abstract
STUDY QUESTION What are the characteristics of spontaneous endometriosis in cynomolgus monkeys? SUMMARY ANSWER Spontaneous endometriosis in cynomolgus monkeys exhibited similar characteristics to the human disease. WHAT IS KNOWN ALREADY One previous report described the prevalence and the basic histopathology of spontaneous endometriosis in cynomolgus monkeys. STUDY DESIGN, SIZE, DURATION Endometriotic lesions that had been histologically confirmed in 8 female cynomolgus monkeys between 5 and 21 years old were subjected to study. PARTICIPANTS/MATERIALS, SETTING, METHODS The monkeys died of, or were sacrificed because of, sickness consequent on endometriosis. Specimens were evaluated histopathologically with haematoxylin and eosin staining, iron staining and immunohistochemistry (CD10, CD31, α-SMA and PGP9.5), and by observing them under a microscope. MAIN RESULTS AND THE ROLE OF CHANCE Endometriotic and stromal cells (CD10-positive) with haemorrhage and inflammation were observed. Smooth muscle metaplasia and nerve fibres were also noted in the endometriotic lesions. Endometriotic lesions in lymph nodes were incidentally found. LIMITATIONS AND REASONS FOR CAUTION Since laparoscopic analysis for monitoring the disease state was not set as a parameter of the current study, time course changes (progression) of the disease were not assessed. WIDER IMPLICATIONS OF THE FINDINGS Further investigation of spontaneous endometriosis in cynomolgus monkeys may contribute to better understanding of the disease pathobiology. STUDY FUNDING/COMPETING INTEREST(S) No external funds were used for this study. A.N.K., S.M., S.H., T.I., O.K., A.K. and M.S. are full-time employees of Chugai Pharmaceutical Co., Ltd. R.K. received lecture fees from Chugai Pharmaceutical Co., Ltd., unrelated to the submitted work. S.N., S. O., L.Y., K.Y. and T.S. have nothing to declare. TRIAL REGISTRATION NUMBER N/A.
Collapse
Affiliation(s)
- A Nishimoto-Kakiuchi
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - S Netsu
- Department of Obstetrics and Gynecology, Jichi Medical University Saitama Medical Center, 1-847 Amanumacho, Omiya-ku, Saitama-shi, Saitama 330-8503, Japan
| | - S Matsuo
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - S Hayashi
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - T Ito
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - S Okabayashi
- Tsukuba Primate Research Center, National Institute of Biomedical Innovation, Health and Nutrition, 1-1 Hachimandai, Tsukuba-shi, Ibaraki 305-0843, Japan
| | - L Yasmin
- Tsukuba Primate Research Center, National Institute of Biomedical Innovation, Health and Nutrition, 1-1 Hachimandai, Tsukuba-shi, Ibaraki 305-0843, Japan
| | - K Yuzawa
- Tsukuba Primate Research Center, National Institute of Biomedical Innovation, Health and Nutrition, 1-1 Hachimandai, Tsukuba-shi, Ibaraki 305-0843, Japan
| | - O Kondoh
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - A Kato
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - M Suzuki
- Research Division, Chugai Pharmaceutical Co., Ltd., 200 Kajiwara, Kamakura-shi, Kanagawa 247-8530, Japan
| | - R Konno
- Department of Obstetrics and Gynecology, Jichi Medical University Saitama Medical Center, 1-847 Amanumacho, Omiya-ku, Saitama-shi, Saitama 330-8503, Japan
| | - T Sankai
- Tsukuba Primate Research Center, National Institute of Biomedical Innovation, Health and Nutrition, 1-1 Hachimandai, Tsukuba-shi, Ibaraki 305-0843, Japan
| |
Collapse
|
5
|
Nishimura K, Kobayashi S, Tsutsui J, Kawasaki H, Katsuragawa S, Noma S, Kimura H, Egawa H, Yuzawa K, Umeshita K, Aikawa A, Uemoto S, Takahara S, Ishigooka J. Practices for Supporting and Confirming Decision-Making Involved in Kidney and Liver Donation by Related Living Donors in Japan: A Nationwide Survey. Am J Transplant 2016; 16:860-8. [PMID: 26555560 DOI: 10.1111/ajt.13515] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 08/25/2015] [Accepted: 08/29/2015] [Indexed: 01/25/2023]
Abstract
This nationwide survey investigated the actual practices for supporting and confirming the decision-making involved in related living-organ donations in Japan, focusing on organ type and program size differences. Answers to a questionnaire survey were collected from 89 of the 126 (71%) kidney and 30 of the 35 (86%) liver transplantation programs in Japan that were involved in living-donor transplantations in 2013. In 70% of the kidney and 90% of the liver transplantation programs, all donors underwent "third-party" interviews to confirm their voluntariness. The most common third parties were psychiatrists (90% and 83%, respectively). Many programs engaged in practices to support decision-making by donor candidates, including guaranteeing the right to withdraw consent to donate (70% and 100%, respectively) and prescribing a set "cooling-off period" (88% and 100%, respectively). Most donors were offered care by mental health specialists (86% and 93%, respectively). Third parties were designated by more of the larger kidney transplant programs compared with the smaller programs. In conclusion, the actual practices supporting and confirming the decision to donate a living organ varied depending on the organ concerned and the number of patients in the program.
Collapse
Affiliation(s)
- K Nishimura
- Department of Psychiatry, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - S Kobayashi
- Department of Psychiatry, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - J Tsutsui
- Department of Psychiatry, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - H Kawasaki
- Department of Psychiatry, Faculty of Medicine, Fukuoka University, Fukuoka, Japan
| | - S Katsuragawa
- Department of Psychiatry, Toho University Sakura Medical Center, Sakura, Japan
| | - S Noma
- Department of Psychiatry, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - H Kimura
- Department of Psychiatry, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - H Egawa
- Department of Surgery, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| | - K Yuzawa
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Mito, Japan
| | - K Umeshita
- Department of Surgery, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - A Aikawa
- Department of Nephrology, Faculty of Medicine, Toho University, Tokyo, Japan
| | - S Uemoto
- Department of Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - S Takahara
- Department of Advanced Technology for Transplantation, Osaka University, Osaka, Japan
| | - J Ishigooka
- Department of Psychiatry, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
| |
Collapse
|
6
|
Yuzawa K, Takahara S, Kanmochi T, Takahashio K, Umeshita H, Monden M, Teraoka S. Evolution of registry and tracking system for organ transplantation in Japan. Transplant Proc 2012; 44:828-31. [PMID: 22564559 DOI: 10.1016/j.transproceed.2012.03.042] [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] [Indexed: 10/28/2022]
Abstract
Previously, the renal and liver transplantation registry in Japan was enforced yearly using registration and tracking papers only on recipients. The input of all patient data and announcement of statistical analysis to the public required a long time. Following The Declaration of Istanbul 2008, the committees planned to establish new registry and tracking systems for renal and liver transplantations on both recipients and donors. As the first step, for renal transplantation, we established a new registry and tracking system, JARTRE (JApan Renal Transplantation REgistry), using flash (USB) memory in 2009. The recipient and donor data were inputted into the USB memory in the transplantation centers. The memory was collected once a year by the committees with performed at 3 months at 1 year and every year after, the operation. As the second step, for liver transplantation, we established an online registry and tracking system, LITRE-J (LIver Transplantation REgistry in Japan), using the Internet in 2011. The recipient and donor data are inputted online in the centers just after transplantation. The tracking is performed at 3 months, at 1 year and every year after the operation. In 2012, we will convert the JARTRE system to an online registration and tracking system using the Internet like LITRE-J. The advantages of these system are the ease of input, scope of the data, and rapidly for statistical processing. Herein we have reported the details of JARTRE and LITRE-J, as well as the evaluation of the registry and tracking systems for renal and liver transplantation in Japan.
Collapse
Affiliation(s)
- K Yuzawa
- Department of Transplantation Surgery, National Hospital Organization Mito Medical Center, Ibaraki, Japan.
| | | | | | | | | | | | | |
Collapse
|
7
|
Nishimura K, Uchida K, Yuzawa K, Fukuda Y, Ichikawa Y, Akioka K, Fujisawa M, Sugitani A, Ito S, Nakatani T, Horimi T, Yoshimura N. Excellent Results With High-Dose Mizoribine Combined With Cyclosporine, Corticosteroid, and Basiliximab in Renal Transplant Recipients: Multicenter Study in Japan. Transplant Proc 2012; 44:147-9. [DOI: 10.1016/j.transproceed.2011.11.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
|
8
|
Takahara S, Yuzawa K. Low Survival Rate of Renal Transplant Recipients From Unrelated Living Donors With Renal Diseases. Transplant Proc 2010; 42:1822-4. [DOI: 10.1016/j.transproceed.2010.01.053] [Citation(s) in RCA: 2] [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] [Received: 01/21/2008] [Revised: 05/13/2008] [Accepted: 01/28/2010] [Indexed: 01/20/2023]
|
9
|
Tada Y, Yano N, Takahashi H, Yuzawa K, Ando H, Kubo Y, Nagasawa A, Ohashi N, Ogata A, Nakae D. Toxicological evaluation of L-proline in a 90-day feeding study with Fischer 344 rats. Regul Toxicol Pharmacol 2010; 58:114-20. [PMID: 20447433 DOI: 10.1016/j.yrtph.2010.04.011] [Citation(s) in RCA: 7] [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: 03/01/2010] [Revised: 04/23/2010] [Accepted: 04/26/2010] [Indexed: 11/29/2022]
Abstract
L-proline (L-Pro) is a non-essential amino acid, and has become widely used as supplements and health foods, recently. A subchronic oral toxicity study of L-Pro was conducted with groups of 10 male and 10 female Fischer 344 rats fed a powder diet containing 0%, 0.625%, 1.25%, 2.5% and 5.0% of L-Pro for 90 days. No treatment-related clinical signs and mortality were noted. We observed no clear treatment-related effects with regard to body weight, food intake or urinalysis data. The average daily water intakes of the treated female groups were significantly increased compared to the controls. The hematology (red blood cell parameter) and serum biochemistry (glucose, blood urea nitrogen, creatinine or uric acid) of the treated male and/or female groups were lower than those of the control groups. However, these changes were lacked dose-dependence, and no abnormalities were found in corresponding pathological findings. In conclusion, the no-observed-adverse-effect-level (NOAEL) for L-Pro was determined to be a dietary dose of 5.0% (2772.9 mg/kg body weight/day for males and 3009.3mg/kg body weight/day for females) under the present experimental conditions.
Collapse
Affiliation(s)
- Y Tada
- Department of Environmental Health and Toxicology, Tokyo Metropolitan Institute of Public Health, Shin'juku, Tokyo 169-0073, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
|
11
|
Yuzawa K, Shinoda M, Fukao K. Outcome of Laparoscopic Living Donor Nephrectomy in 2007: National Survey of Transplantation Centers in Japan. Transplant Proc 2009; 41:85-7. [DOI: 10.1016/j.transproceed.2008.11.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2008] [Accepted: 11/12/2008] [Indexed: 10/21/2022]
|
12
|
|
13
|
Tada Y, Yano N, Takahashi H, Yuzawa K, Ando H, Kubo Y, Nagasawa A, Uehara S, Ogata A, Nakae D. Toxic effects of l-aspartic acid at high dose levels on kidneys and salivary glands in Fischer 344 rats detected in a 90-day feeding study. Food Chem Toxicol 2008; 46:2789-95. [PMID: 18583012 DOI: 10.1016/j.fct.2008.05.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2007] [Revised: 04/25/2008] [Accepted: 05/13/2008] [Indexed: 11/27/2022]
Abstract
A subchronic oral toxicity study of l-aspartic acid (l-Asp) was conducted with groups of 10 male and 10 female Fischer 344 rats fed a powder diet containing 0%, 0.05%, 1.25%, 2.5% and 5.0% concentrations for 90 days. Serum biochemistry showed treatment-related decreases of blood urea nitrogen, creatinine and uric acid levels in both sexes. In addition, incidences of urinary ketone and protein were significantly increased in treated both sexes, while relative kidney weight was significantly increased in the 5.0% male rat, and regenerative renal tubules with tubular dilation were histopathologically observed in male rats of the 2.5% or greater groups. The observed renal injury was confirmed not to be due to accumulation of alpha2u-globulin. Acinar cell hypertrophy of salivary glands was histopathologically evident in male and female rats of the 2.5% or greater groups. The present results indicate that l-Asp causes toxic effects on kidneys and possibly salivary glands at high dose levels in male and female Fischer 344 rats. Such toxic effects were observed only in animals given 2.5% and/or higher doses of l-Asp. In conclusion, the no-observed-adverse-effect-level (NOAEL) for l-Asp is 1.25% (696.6 mg/kg body weight/day for males and 715.2 mg/kg body weight/day for females) under the present experimental conditions.
Collapse
Affiliation(s)
- Y Tada
- Tokyo Metropolitan Institute of Public Health, Department of Environmental Health and Toxicology, 3-24-1, Hyakunin'cho, Shin'juku, Tokyo 169-0073, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Watanabe M, Yuzawa K, Homma M, Ohkohchi N. Establishment of an Animal Model With Side Effects Induced by Mycophenolate Mofetil and Pharmacohistological Analysis of Them. Transplant Proc 2006; 38:3323-6. [PMID: 17175262 DOI: 10.1016/j.transproceed.2006.10.162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2006] [Indexed: 10/23/2022]
Abstract
UNLABELLED Mycophenolate mofetil (MMF) is used for immunosuppression after organ transplantation, but gastrointestinal side effects including diarrhea are sometimes observed with this drug. We sought to construct on animal model of diarrhea with MMF in rodents. MATERIALS AND METHODS BALB/Cj mice, weighing 25 g received 500 mg /kg of MMF, 60 mg/kg of levofloxacin (LVFX), 1000 mg/kg of Hangeshashin-to (HST), which is traditional Kampo medicine. This cocktail was administered orally to MMF, LVFX, HST, MMF+LVFX, and MMF+LVFX+HST groups for 21 days. We measured the water content fecal collected on days 1, 4, 8, 11, 14, 18, and 21. Feces on day 21 were cultured for identification of fecal flora. Mice were sacrificed on day 21, with blood samples collected to measure mycophenolic acid (MPA) concentrations by HPLC. Jejunum, cecum, and colon were taken for histological evaluation. RESULTS Significant weight loss of mice and increased fecal water content of were observed in MMF and MMF+LVFX but not in MMF+LVFX+HST groups. Serum MPA levels didn't differ in MMF-administered groups. Inflammatory changes in intestinal villi were observed in the cecum in MMF and MMF+LVFX groups. A change in fecal flora was observed in LVFX-administered groups. CONCLUSION Diarrhea induced by MMF in a rodent model produced inflammatory changes in the cecum. LVFX seemed to change the activity of beta-glucuronidase in the fecal flora. HST suppressed fecal softening induced by MMF in this animal model.
Collapse
Affiliation(s)
- M Watanabe
- Department of Surgery, Graduate School of Comphrehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
| | | | | | | |
Collapse
|
15
|
Yuzawa K, Shinoda M, Fukao K. Outcome of Laparoscopic Live Donor Nephrectomy in 2005: National Survey of Japanese Transplantation Centers. Transplant Proc 2006; 38:3409-11. [PMID: 17175288 DOI: 10.1016/j.transproceed.2006.10.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 07/22/2006] [Indexed: 11/24/2022]
Abstract
The increased acceptance of laparoscopic nephrectomy (LN) has been a driving force for live donor kidney transplantation. However, the outcomes of LN in live donors has not yet been clarified in Japan. In this study, we surveyed 125 Japanese kidney transplantation centers to investigate the current status of live donor LN. Of 125 centers, the 98 that responded had performed 695 live donor nephrectomies. Among these centers, 43 had performed LN. Among the 695 nephrectomies, 441 donors had undergone LN and 254, open nephrectomies. In 43 centers, 16 were performed as hand-assisted (HA) LN; 20, non-HA; 3, both HA and non-HA; and 5 laparoscope-assisted. Ten centers used a peritoneal approach; 30, a retroperitoneal; and 3, both. In 441 LN donors, 1 had a life-threatening complication of deep venous thrombosis and survived. Blood transfusions were performed in 7 donors. Open conversions from LN were necessary in 24. Minor complications not requiring prolonged hospital stay were reported in 52. The mortality of LN was zero. In contrast, among the 441 recipients, 1 case was reported as primary nonfunction after venous misadventure in the operation and 30 recipients needed hemodialysis after transplantation because of delayed graft function. Urinary tract complications were noted in 11 recipients. This survey presented the current status of the procedure, providing a base for informed consent from potential donors.
Collapse
Affiliation(s)
- K Yuzawa
- National Hospital Organization Mito Medical Center, Department of Transplantation Surgery, Ibaraki-Ken, Japan.
| | | | | |
Collapse
|
16
|
Tada Y, Fujitani T, Yano N, Takahashi H, Yuzawa K, Ando H, Kubo Y, Nagasawa A, Ogata A, Kamimura H. Effects of tetrabromobisphenol A, brominated flame retardant, in ICR mice after prenatal and postnatal exposure. Food Chem Toxicol 2006; 44:1408-13. [PMID: 16716481 DOI: 10.1016/j.fct.2006.03.006] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2005] [Revised: 02/27/2006] [Accepted: 03/17/2006] [Indexed: 11/16/2022]
Abstract
Tetrabromobisphenol A (TBBPA), brominated flame retardant, is produced in the largest amounts globally for use in plastics or building materials. TBBPA has been detected in sediment, air at the dismantling plant or human serum samples. In the present study, we examined the effects of prenatal and postnatal exposure to TBBPA in mice. TBBPA (99.1% pure) in diet was administered to pregnant ICR mice at doses of 0% (control), 0.01%, 0.1% or 1.0% from gestational day 0 to weaning at postnatal day 27. The average daily food intake and body weight of dams showed no significant differences between the control and treated groups. There were no dose-related effects on reproductive data. Serum concentrations of total-cholesterol and liver weights of treated dams and offspring were higher than those of the control mice. Histological findings in treated dams or offspring showed the increase of focal necrosis of hepatocytes and inflammatory cell infiltration in the liver, and increase of dilation or atrophy of renal tubules and cyst in the kidney. TBBPA was developed as a new, safe class of flame retardant and was not highly toxic. However, the present data suggested that TBBPA caused a lipid metabolic disorder and hepatic or kidney lesion, under these conditions.
Collapse
Affiliation(s)
- Y Tada
- Department of Environmental Health and Toxicology, Tokyo Metropolitan Institute of Public Health, 3-24-1, Hyakunin-cho, Shinjuku-ku, Tokyo 169-0073, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Abstract
To assess survival of grafts after uncontrollable rejection, one performs backtransplantation from the recipient to the donor. This study investigated backtransplantation in an animal model. Hearts were transplanted heterotopically in rats. After a few days, the transplanted heart grafts were harvested from the recipients and backtransplanted to the donor strain heterotopically and a drug was administered. Cardiac grafts survived 6.2 days in the first recipients. After backtransplantation on day 5 or 6, all backtransplanted grafts survived well in the second recipients. After backtransplantation on day 7, when 4 of 5 grafts had no beat, 2 of 5 grafts recovered beating on day 3 after backtransplantation without any drug treatment. After backtransplantation on day 7, when 4 of 5 grafts had no beat, all (5 of 5 grafts) recovered beating well with the administration of FTY720 on day 3 after backtransplantation. CsA or FK506 had no effect on survival after backtransplantation. Pathological findings revealed mild cellular infiltration in the cases of FTY720 and severe necrosis in the cases of no drug, CsA, or FK506. After backtransplantation on day 8, no grafts (0 of 5 grafts in each drug) recovered beating with any drugs. These data document the possibility of backtransplantation.
Collapse
Affiliation(s)
- K Yuzawa
- Department of Surgery, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan.
| | | | | |
Collapse
|
18
|
Itagaki F, Homma M, Yuzawa K, Fukao K, Kohda Y. Drug interaction of tacrolimus and proton pump inhibitors in renal transplant recipients with CYP2C19 gene mutation. Transplant Proc 2002; 34:2777-8. [PMID: 12431607 DOI: 10.1016/s0041-1345(02)03409-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- F Itagaki
- Department of Pharmaceutical Sciences, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | |
Collapse
|
19
|
Abstract
Male and female CD-1 mice (50 mice per group) were administered thiabendazole (TBZ) in diet at levels of 0 (control), 0.031, 0.125 and 0.5% for 78 weeks. A life time study was terminated after 78 weeks due to enhanced strain specific mortality. There were no significant differences in mortality between the control and treated groups. Mean body weights of high-dose groups showed significant decreases compared with the controls. The bladder weights of male and female mice of the 0.5% group were significantly higher than those of the control mice. Gross findings in treated mice included the renal atrophy, hydronephrosis, calculi in renal pelvis and/or bladder and ovarian atrophy. Microscopic findings in the kidneys of treated mice included the nephrosis, hydronephrosis or hyperplasia of transitional epithelium of renal pelvis or papilla. In the bladder of treated mice, hyperplasia or squamous metaplasia of transitional epithelium and one transitional cell papilloma were observed. Dose-dependent decreases in the incidence of spontaneous lesion in the male or female reproductive system were recognized. It is concluded that TBZ is not carcinogenic to CD-1 mice of both sexes. However, caution should be exercised in the long-term application of high TBZ doses.
Collapse
Affiliation(s)
- Y Tada
- Department of Toxicology, Tokyo Metropolitan Research Laboratory of Public Health, 24-1, Hyakunincho 3-chome, Shinjuku-ku, 169-0073, Tokyo, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Sakamoto Y, Mikuriya H, Tayama K, Takahashi H, Nagasawa A, Yano N, Yuzawa K, Ogata A, Aoki N. Goitrogenic effects of green tea extract catechins by dietary administration in rats. Arch Toxicol 2001; 75:591-6. [PMID: 11808919 DOI: 10.1007/s00204-001-0286-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [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: 10/27/2022]
Abstract
The effects of green tea extract catechins on the rat thyroid were examined in a 13-week feeding study and subsequent 2-,4- and 8-week studies. Commercially available polyphenon-60 (P-60) which contains green tea extract catechins at 66.2% was used as a source of catechins. A basic diet containing different concentrations of P-60 was used for experiments. In the 13-week study, 10 rats of each sex were administered diets containing P-60 at 0 (control), 0.625, 1.25, 2.5 and 5.0%. Goiters were observed in the 13-week test. The mean thyroid weight of rats fed a diet containing 5.0% of P-60 (5.0% group) significantly increased to 444% of the control in males and to 304% of the control in females. Histological examinations of the thyroid of the 5.0% group revealed marked hypertrophy and/or hyperplasia of the follicles, some with depletion of colloid and some with rich colloid, and formation of a fibrous capsule. Slight hypertrophy of follicular cells was observed in male rats fed a diet containing 1.25% of P-60 (1.25% group) and female rats fed a diet containing 2.5% of P-60 (2.5% group). Degree and incidence of thyroid lesions were higher in males than in females in the 1.25, 2.5 and 5.0% groups. In the 2-8-week studies, five rats of each sex were given diets containing 0 (control) and 5.0% of P-60. In the 5.0% group, the mean thyroid weight in males significantly increased to 161% of the control as early as 2 weeks and increased to 357% of the control at 8 weeks. Histologically, these goiters were also associated with follicular cell hypertrophy/hyperplasia as in the 13-week study. The degree and incidence of thyroid lesions were higher in males than in females. These results indicate that dietary administration of the green tea extract catechins at high doses induced goiters in rats, and this may be due to antithyroid effects of catechins. In the 13-week study, the no-observed effect level (NOEL) of green tea extract catechins for F344 rats based on histological changes of the thyroid was considered to be 0.625% in males and 1.25% in females in the diet, respectively.
Collapse
Affiliation(s)
- Y Sakamoto
- Department of Toxicology, Tokyo Metropolitan Research Laboratory of Public Health, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Seino K, Setoguchi Y, Ogino T, Kayagaki N, Akiba H, Nakano H, Taniguchi H, Takada Y, Yuzawa K, Todoroki T, Fukuchi Y, Yagita H, Okumura K, Fukao K. Protection against Fas-mediated and tumor necrosis factor receptor 1-mediated liver injury by blockade of FADD without loss of nuclear factor-kappaB activation. Ann Surg 2001; 234:681-8. [PMID: 11685033 PMCID: PMC1422094 DOI: 10.1097/00000658-200111000-00015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 01/12/2023]
Abstract
OBJECTIVE To investigate the role of FADD (Fas-associated protein with death domain) in Fas and tumor necrosis factor receptor 1 (TNFR1)-mediated hepatic injury and inflammatory response in vivo. SUMMARY BACKGROUND DATA Fas and TNFR1 are cell surface molecules that trigger apoptosis or inflammation on engagement by a specific ligand or antibody. FADD is recruited to the cytoplasmic domain of these receptors on their activation and works as a common mediator to induce apoptosis. It is known that a blockade of FADD can inhibit apoptosis mediated by Fas or TNFR1 in vitro. However, it is not known whether the blockade can prevent organ injury and whether the inflammatory cascade is affected in vivo. METHODS A FADD deletion mutant lacking the death effector domain was introduced into mice by transduction with an adenovirus vector, and the effect of this FADD dominant negative mutant was examined in several liver injury models. RESULTS Hepatic injury induced by anti-Fas monoclonal antibody or tumor necrosis factor (TNF)-alpha plus D-galactosamine was markedly ameliorated by the FADD dominant negative transduction, which abrogated the death rate. Further, the FADD dominant negative transduction efficiently blocked T cell- mediated concanavalin A-induced hepatitis while not affecting TNF-alpha production or TNF-alpha-induced nuclear factor-kappaB activation in the liver. CONCLUSIONS These results provide the basis for a novel therapeutic modality in which an unfavorable apoptotic process can be inhibited without affecting a favorable response for liver regeneration; this would be relevant to the clinical treatment of acute and chronic liver diseases as well as to some inflammatory disorders with hypercytokinemia, such as sepsis.
Collapse
Affiliation(s)
- K Seino
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba Science City, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
22
|
Takada Y, Hori T, Yuzawa K, Seino KI, Taniguchi H, Otsuka M, Kaneko M, Fukao K. Living donor with type IV-A choledochal cyst in liver transplantation. Transplantation 2001; 72:551-2. [PMID: 11502998 DOI: 10.1097/00007890-200108150-00039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
23
|
Otsuka M, Yuzawa K, Takada Y, Taniguchi H, Todoroki K, Fukao K, Koyama A, Akaza H. Long-term results of donor-specific blood transfusion with cyclosporine in living related kidney transplantation. Nephron Clin Pract 2001; 88:144-8. [PMID: 11399917 DOI: 10.1159/000045975] [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] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Donor-specific blood transfusion (DST) was introduced to achieve better graft survival. However, its benefits are controversial considering the immunosuppression of cyclosporine (CYA) or tacrolimus (Tac), and its long-term effects have not been well discussed. Of the 40 patients who received DST with CYA, 3 (7.5%) became cross-match positive. Of the 37 patients with negative cross-match, 34 patients received a one-haplotype-matched kidney and were compared to patients with one-haplotype-matched kidney transplant without preoperative DST (n = 13). Acute rejection within 3 months after transplant was 29.4% in the DST group, and 15.4% in the non-DST group. All rejection episodes were steroid resistant in the non-DST group. If the graft survival rates were calculated excluding non-immunological graft loss, graft survival rate was 91.0 and 72.8% at 5 and 10 years in the DST group, and 83.3% at 5 and 10 years in the non-DST group, respectively. The two graft survival lines converged 7 years and 7 months after transplantation. No beneficial effect of DST was statistically evident under CYA immunosuppression. In terms of the severity of acute rejection or the onset of chronic rejection, DST induced a small benefit, however, which seemed to disappear within 8 years after transplantation.
Collapse
Affiliation(s)
- M Otsuka
- Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Takada Y, Ishiguro S, Fukunaga K, Gu M, Taniguchi H, Seino KI, Yuzawa K, Otsuka M, Todoroki T, Fukao K. Increased intracranial pressure in a porcine model of fulminant hepatic failure using amatoxin and endotoxin. J Hepatol 2001; 34:825-31. [PMID: 11451165 DOI: 10.1016/s0168-8278(01)00003-4] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 01/08/2023]
Abstract
BACKGROUND/AIMS The purpose of this study was to develop a clinically relevant porcine model of fulminant hepatic failure (FHF) by means of administration of amatoxin and endotoxin. METHODS Pigs were intraportally administered only saline in group 1 (n = 3), 1 microg/kg of lipopolysaccharide (LPS) in group 2 (n = 4), 0.1 mg/kg of alpha-amanitin in group 3 (n = 5), and amanitin plus LPS in group 4 (n = 9). RESULTS All the pigs in groups 1 and 2 survived with minimal changes in liver function tests. In contrast to the 60% mortality in group 3, all the pigs in group 4 died within 96 h, with a significant increase in aspartate transaminase at 24 h (9,757 +/- 2,167 IU/I). In addition, they demonstrated severe metabolic disorders, such as serum lactate accumulation, hypoglycemia, coagulopathy, plasma amino acid imbalance, and hyperammonemia. The intracranial pressure significantly increased to 17.8 +/- 2.5 mmHg immediately before death. Reversal of FHF in these pigs following orthotopic liver transplantation confirmed that the toxicity is liver-specific and that the graft liver is unaffected. CONCLUSIONS This porcine model of FHF induced by a combination of amanitin and LPS will be of much use in the development of new therapies for human FHF.
Collapse
Affiliation(s)
- Y Takada
- Department of Surgery, Institute of Clinical Medicine, Tsukuba University, Tsukuba City, Ibaraki, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
25
|
Ohara K, Tatsuzaki H, Molotkova NG, Oda T, Yuzawa K, Saida Y, Matsuzaki Y, Shimizu W, Todoroki T, Fukao K, Tanaka N, Itai Y. Utility of serum CA 19-9 monitoring in preoperative radiotherapy for pancreatic cancer. Hepatogastroenterology 2001; 48:859-63. [PMID: 11462942] [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] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
BACKGROUND/AIMS Pancreatic cancer is extremely refractory even to aggressive treatments including surgery, resulting in early metastasis and/or local recurrence. We investigated changes in serum tumor marker CA 19-9 levels during preoperative radiotherapy in conjunction with initial treatment failure. METHODOLOGY Twenty-three patients presenting with localized disease and an increased serum CA 19-9 level, who were slated to undergo pancreatectomy and/or intraoperative radiotherapy following preoperative radiotherapy were reviewed. CA 19-9 response, the ratio of post-radiotherapy level before laparotomy to pre-radiotherapy level, was analyzed in relation to disease-control time and survival. RESULTS Eleven patients revealed metastasis at restaging or laparotomy; 12 patients (52%) completed aggressive treatments. Initial failure was identified at the liver (52%), peritoneum (52%), or local site (26%) with a median disease-control time of 91 days; 7 patients showed combined failure. All but 1 patient died of cancer with a median survival time of 264 days. CA 19-9 response (range: 0-1185%) did not correlate with disease-control time or survival; 8 progressive-disease patients (> 140% response), however, showed significantly shorter disease-control time than 15 nonprogressive-disease patients (< or = 140% response). CONCLUSIONS CA 19-9 monitoring is useful in preoperative radiotherapy for identifying patients who will not benefit by succeeding aggressive treatments by predicting early metastasis.
Collapse
Affiliation(s)
- K Ohara
- Department of Radiology, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba City 305-8575, Japan.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
Male ICR mice were administered thiabendazole (TBZ) in the diet at concentration of 0 (control), 0.8, 1.2 and 1.6% for 44 weeks. The mortality was 10, 6, 40 or 90% in control, 0.8, 1.2 or 1.6% TBZ group, respectively. In dead mice, the gross findings included the abnormalities of kidney such as atrophy, hydronephrosis or swelling in 2, 67, 95 or 96% of the 0, 0.8, 1.2 or 1.6% TBZ group, respectively. In surviving mice at the end of study, the right kidney weight of treated groups was significantly lower than that of control group. The urinary bladder weight of treated groups was significantly higher than that of control group. Gross findings in treated mice included the renal atrophy, hydronephrosis, calculi in renal pelvis or urinary bladder and thickening of the bladder wall. Microscopic findings in the kidneys of treated mice included nephrosis, hydronephrosis and hyperplasia of transitional epithelium of renal pelvis and/or papilla. In the urinary bladder, hyperplasia or squamous metaplasia of transitional epithelium were found in treated mice. Administration of TBZ in the diet for 44 weeks results in nephrosis and calculus formation in the renal pelvis and urinary bladder of male ICR mice, and is associated with hyperplasia of transitional epithelium of renal pelvis or urinary bladder.
Collapse
Affiliation(s)
- Y Tada
- Department of Toxicology, Tokyo Metropolitan Research Laboratory of Public Health, 24-1 Hyakunincho 3-chome, Shinjuku-ku, Tokyo 169-0073-0073, Japan.
| | | | | | | | | | | |
Collapse
|
27
|
Gu M, Takada Y, Fukunaga K, Ishiguro S, Taniguchi H, Seino K, Yuzawa K, Otsuka M, Todoroki T, Fukao K. Role of platelet-activating factor in hepatectomy with Pringle's maneuver. J Surg Res 2001; 96:233-8. [PMID: 11266278 DOI: 10.1006/jsre.2000.6067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Interruption of hepatic inflow is commonly used to reduce blood loss during extensive liver resection, but may cause liver dysfunction. The present study investigated the effects of platelet-activating factor (PAF) antagonist E5880 on total liver warm ischemia and 70% hepatectomy. METHODS Rabbits were used in this study and were divided into four groups: group 1, those treated with only 70% hepatectomy; group 2, those treated with only 20 min Pringle's maneuver; group 3, those treated with both Pringle's maneuver and 70% hepatectomy without pretreatment; and group 4, those pretreated with PAF antagonist E5880 (0.3 mg/kg) followed by Pringle's maneuver and 70% hepatectomy. The remnant liver function was then evaluated after reperfusion. RESULTS Seven-day survival rates in both groups 1 and 2 were 100%. E5880 treatment significantly increased 7-day survival rate (group 4: 38% vs group 3: 0%, P < 0.05) after a combination of Pringle's maneuver and 70% hepatectomy. The elevations of serum liver enzymes (GOT, GPT, mGOT, and LDH) were significantly inhibited in group 4 at 1 and 4 h after reperfusion. Portal venous pressure and the energy charge of liver were also significantly improved in group 4, compared with those in group 3. Endothelin-1 levels of arterial and portal venous blood progressively increased after reperfusion; however, there were no significant differences between the two groups. Leukocyte infiltration into the liver was significantly inhibited in group 4. CONCLUSION E5880 pretreatment has protective effects on liver function after 70% hepatectomy with Pringle's maneuver in rabbits.
Collapse
Affiliation(s)
- M Gu
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba City, Ibaraki, 305-8575, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Affiliation(s)
- K Seino
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-City, Japan
| | | | | | | | | | | | | |
Collapse
|
29
|
Gu M, Takada Y, Fukunaga K, Ishiguro S, Seino K, Taniguchi H, Yuzawa K, Otsuka M, Todoroki T, Fukao K. Improvement of graft function without donor pretreatment in liver transplantation from non-heart-beating donors. Transplant Proc 2001; 33:837-8. [PMID: 11267089 DOI: 10.1016/s0041-1345(00)02338-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- M Gu
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, 305-8575, Tsukuba City, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Takada Y, Otsuka M, Seino K, Taniguchi H, Koike N, Kawamoto T, Koda K, Adachi S, Yuzawa K, Nozue M, Todoroki T, Fukao K. Hepatic resection for metastatic tumors from noncolorectal carcinoma. Hepatogastroenterology 2001; 48:83-6. [PMID: 11269007] [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] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND/AIMS The role of liver resection for hepatic metastases from noncolorectal carcinomas has yet to be clarified. The present study examines a single institutional experience of hepatic resection for noncolorectal metastases. METHODOLOGY From January 1987 to March 1999, 14 patients underwent curative resection for liver metastases from noncolorectal carcinomas. Records of these patients were reviewed. RESULTS Resections were performed for liver metastases from gastric cancers (n = 8), pancreatic cancers (n = 2), and cancers of bile duct, the papilla of Vater, kidney, and breast (n = 1, each). Six patients (5 with gastric cancers and 1 with pancreas cancer) presented with synchronous disease and 8 with metachronous disease. In the gastric cancer patients, there are 2 disease-free survivors (26 and 53 months) in the metachronous group, though all of the 5 patients with synchronous disease died within 29 months. All of the 4 patients with pancreatobiliary carcinomas died within 2 years. One case of breast cancer and another of renal cell cancer are alive without disease at 49 and 9 months, respectively. CONCLUSIONS For metastases from gastric cancers, better survival after hepatic resection is expected in metachronous cases than in synchronous cases. Hepatic resection may afford little benefit for patients with liver metastases from pancretobiliary cancers.
Collapse
Affiliation(s)
- Y Takada
- Department of Surgery, Institute of Clinical Medicine, Tsukuba University, Ten-nodai 1-1-1, Tsukuba, Ibaraki 305-8575, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Zheng YW, Taniguchi H, Suzuki A, Takada Y, Fukunaga K, Seino K, Yuzawa K, Otsuka M, Fukao K, Nakauchi H. Effects of combined growth factors on clonal growth and albumin secretion of murine fetal hepatocytes in low density culture. Transplant Proc 2000; 32:2372-3. [PMID: 11120205 DOI: 10.1016/s0041-1345(00)01704-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Y W Zheng
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Fukunaga K, Takada Y, Gu M, Ishiguro S, Seino K, Taniguchi H, Yuzawa K, Otsuka M, Goto K, Fukao K. Peri- and postoperative kinetics of endothelin-1/big endothelin-1 and effects of endothelin antagonist in porcine liver transplantation from non-heart-beating donors. Transplant Proc 2000; 32:1647-9. [PMID: 11119874 DOI: 10.1016/s0041-1345(00)01436-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- K Fukunaga
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Otsuka M, Yuzawa K, Takada Y, Taniguchi H, Fukunaga K, Seino K, Todoroki T, Fukao K. Long-term graft survival of living-related kidneys after donor-specific transfusion. Transplant Proc 2000; 32:1741-2. [PMID: 11119914 DOI: 10.1016/s0041-1345(00)01428-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Otsuka
- University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Seino K, Tun T, Ohshima N, Hamada H, Yoshino K, Ikeda S, Fukunaga K, Taniguchi H, Takada Y, Yuzawa K, Otsuka M, Todoroki T, Fukao K. Inhibition of CD95 ligand-mediated inflammation. Transplant Proc 2000; 32:2038-9. [PMID: 11120056 DOI: 10.1016/s0041-1345(00)01548-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Seino
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Zheng YW, Taniguchi H, Suzuki A, Takada Y, Fukunaga K, Seino K, Yuzawa K, Otsuka M, Fukao K, Nakauchi H. Effects of four extracellular matrices associated with growth factors on clonal culture and proliferation of murine fetal hepatocytes. Transplant Proc 2000; 32:2498-9. [PMID: 11120265 DOI: 10.1016/s0041-1345(00)01765-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Y W Zheng
- Department of Surgery, Institute of Clinical Medicine, and University of Tsukuba, Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Gu M, Takada Y, Fukunaga K, Ishiguro S, Taniguchi H, Seino K, Yuzawa K, Otsuka M, Todoroki T, Fukao K. Pharmacologic graft protection without donor pretreatment in liver transplantation from non-heart-beating donors. Transplantation 2000; 70:1021-5. [PMID: 11045637 DOI: 10.1097/00007890-200010150-00006] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 12/14/2022]
Abstract
BACKGROUND Non-heart-beating donors (NHBDs) are considered potential sources of transplant organs in an effort to alleviate the problem of donor shortage in clinical liver transplantation. We investigated the possibility of pharmacologic protection of hepatic allograft function from NHBDs without donor pretreatment. METHODS Orthotopic liver transplantation was performed using pigs. In donors, cardiac arrest was induced by stopping the respirator. Forty-five minutes after cessation of the respirator, the liver was flushed with cold lactated Ringer's solution including heparin and with the University of Wisconsin (UW) solution, and then preserved for 8 hr at 4 degrees C in the UW solution. The pigs were divided into two groups: a control group and a treated group. In the treated group, an endothelin antagonist TAK-044 was added to the UW solutions (10 mg/L), and TAK-044 (10 mg/kg body weight) and a platelet activating factor antagonist E5880 (0.3 mg/kg body weight) were also administered to the recipients. RESULTS TAK-044 and E5880 treatment significantly increased the 7-day survival rate of the recipients (100% vs. 17%, P<0.05). In the treated group, portal venous pressure immediately after reperfusion of the graft was significantly lower than in the control group, and postoperative increase in serum concentrations of glutamic oxaloacetic transaminase and total bilirubin was attenuated. Moreover, the energy charge and adenosine triphosphate concentration of the liver were rapidly restored after reperfusion. CONCLUSIONS Pharmacologic modulation with TAK-044 and E5880 avoiding donor pretreatment can improve the viability of hepatic allografts procured from NHBDs.
Collapse
Affiliation(s)
- M Gu
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Taniguchi H, Kondo R, Suzuki A, Zheng YW, Takada Y, Fukunaga K, Seino K, Yuzawa K, Otsuka M, Fukao K, Nakauchi H. Clonogenic colony-forming ability of flow cytometrically isolated hepatic progenitor cells in the murine fetal liver. Cell Transplant 2000; 9:697-700. [PMID: 11144968 DOI: 10.1177/096368970000900517] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [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: 12/14/2022] Open
Abstract
Stem cells are defined as cells having multilineage differentiation potential and self-renewal capability. Hepatic stem cells have aroused considerable interest not only because of their developmental importance but also for their therapeutic potential. However, their presence in the liver has not yet been demonstrated. With the use of a fluorescence-activated cell sorter (FACS) and monoclonal antibodies, we attempted to ascertain whether hepatic stem cells are present in the murine fetal liver. For this purpose, we optimized a cell isolation technique for FACS sorting of fetal liver cells. When isolated CD45 TER119 cells (the non-blood cell fraction in the fetal liver) were tested for their clonogenic colony-forming ability, mechanical dissociation (pipetting) was the most suitable cell isolation technique for FACS sorting. We confirmed that these colonies contained not only cells expressing hepatocyte markers but also cells expressing cholangiocyte markers. To identify hepatic stem cells, studies must focus on CD45TER119- cells in the murine fetal liver.
Collapse
Affiliation(s)
- H Taniguchi
- Department of Surgery, Institute of Clonical Medicine, University of Tsukuba, Ibaraki, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Affiliation(s)
- K Yuzawa
- Division of Immunology. Department of Surgery, The University of Texas Medical School at Houston, Houston, Texas, USA
| | | | | | | |
Collapse
|
39
|
Seino K, Yamauchi T, Ishibashi A, Tokuhara N, Kobayashi S, Fukunaga K, Taniguchi H, Takada Y, Yuzawa K, Otsuka M, Todoroki T, Fukao K. Prolongation of mouse skin allograft survival by novel agonists selective for retinoic acid receptor-alpha. Transplant Proc 2000; 32:257-8. [PMID: 10715409 DOI: 10.1016/s0041-1345(99)00949-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- K Seino
- Department of Surgery, University of Tsukuba School of Medicine, Tsukuba, Japan
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Taniguchi H, Suzuki A, Zheng Y, Kondo R, Takada Y, Fukunaga K, Seino K, Yuzawa K, Otsuka M, Fukao K, Nakauchi H. Usefulness of flow-cytometric cell sorting for enrichment of hepatic stem and progenitor cells in the liver. Transplant Proc 2000; 32:249-51. [PMID: 10715407 DOI: 10.1016/s0041-1345(99)00947-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- H Taniguchi
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba Science-city, Ibaraki, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Takada Y, Fukunaga K, Gu M, Ishiguro S, Taniguchi H, Seino K, Yuzawa K, Otsuka M, Fukao K. Improvement of allograft viability with organs procured from non-heart-beating donors in porcine liver transplantation. Transplant Proc 2000; 32:277-8. [PMID: 10715416 DOI: 10.1016/s0041-1345(99)00956-2] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Y Takada
- Department of Surgery, Institute of Clinical Medicine, Tsukuba University, Tsukuba-city, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Seino K, Ogino T, Fukunaga K, Taniguchi H, Takada Y, Yuzawa K, Otsuka M, Yagita H, Okumura K, Fukao K. Attempts to reveal the mechanism of CD95-ligand-mediated inflammation. Transplant Proc 1999; 31:1942-3. [PMID: 10455926 DOI: 10.1016/s0041-1345(99)00219-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- K Seino
- Department of Surgery, University of Tsukuba School of Medicine, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Fukunaga K, Takada Y, Mei G, Taniguchi H, Seino K, Yuzawa K, Otsuka M, Todoroki T, Goto K, Fukao K. An endothelin receptor antagonist ameliorates injuries of sinusoid lining cells in porcine liver transplantation. Am J Surg 1999; 178:64-8. [PMID: 10456707 DOI: 10.1016/s0002-9610(99)00107-5] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND TAK-044 is an endothelin receptor antagonist. Whether the agent has protective effects on liver graft injuries from non-heart-beating donors is unknown. METHODS In donor pigs, cardiac arrest was induced by stopping the respirator. Forty-five minutes after cessation of the respirator, the liver was flushed with University of Wisconsin (UW) solution, preserved for 8 hours at 4 degrees C, and transplanted orthotopically. The pigs were divided into two groups: a control group and a drug-treated group in which TAK-044 was given in the UW solutions (10 mg/L) and was administered to recipients (10 mg/kg body weight). RESULTS TAK-044 treatment significantly increased recipient survival rate. After reperfusion of the graft, portal venous pressure and 15-minute retention rate of indocyanine green were significantly reduced in the drug-treated group. Electron microscopic findings indicated that TAK-044 attenuated endothelial cell injuries. CONCLUSION TAK-044 treatment improves the viability of livers harvested from non-heart-beating donors. The main effect of the agent is protection of endothelial cells from ischemia/reperfusion injuries.
Collapse
Affiliation(s)
- K Fukunaga
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
44
|
Taniguchi H, Kondo R, Suzuki A, Zheng Y, Ito S, Takada Y, Fukunaga K, Seino K, Yuzawa K, Otsuka M, Fukao K, Yoshiki A, Kusakabe M, Nakauchi H. Evidence for the presence of hepatic stem cells in the murine fetal liver. Transplant Proc 1999; 31:454. [PMID: 10083186 DOI: 10.1016/s0041-1345(98)01704-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- H Taniguchi
- Department of Surgery, University of Tsukuba, Ibaraki, Japan.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Affiliation(s)
- K Yuzawa
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Japan
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Fukunaga K, Takada Y, Taniguchi H, Mei G, Seino KI, Yuzawa K, Otsuka M, Todoroki T, Goto K, Fukao K. Endothelin antagonist treatment for successful liver transplantation from non-heart-beating donors. Transplantation 1999; 67:328-32. [PMID: 10075603 DOI: 10.1097/00007890-199901270-00025] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [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: 02/04/2023]
Abstract
BACKGROUND With the shortage of cadaveric donors, non-heart-beating donors (NHBDs) are a potential source of liver allografts. However, warm ischemic injury in NHBDs seriously affects the viability of graft liver. Endothelin (ET)-1 has been reported to be involved in the hepatic microcirculatory disturbances after ischemia-reperfusion. METHODS In a porcine orthotopic liver transplantation model, changes in the serum and liver tissue ET-1 concentration were measured and the effects of an ET receptor antagonist, TAK-044, were evaluated. After cardiac arrest of the donors, liver allografts were subjected to 90 min of warm ischemia, flushed, and preserved for 4 hr at 4 degrees C. The pigs were divided into two groups: a control group (no drug treatment) and a drug-treated group, in which donors and recipients were treated with TAK-044 (10 mg/kg body, drip intravenous injection). Both groups had six donor/recipient pairs. RESULTS -The ET-1 concentration in the hepatic venous blood increased after reperfusion of the graft in the control group recipients. ET-1 in the graft liver significantly increased during the cold preservation period. TAK-044 treatment significantly increased recipient 7-day survival rate. After reperfusion of the graft, the concentrations of serum liver enzymes and arterial lactate in the drug-treated group were significantly lower than in the control group. The postoperative increase in portal venous pressure was significantly reduced in the drug-treated group. Measurements of liver enzymes in the washed-out preservation fluid at the time of graft rinsing indicated that TAK-044 treatment of the donors significantly suppressed liver enzyme release during ischemia. CONCLUSIONS These findings indicate TAK-044 treatment has protective effects on postoperative function of hepatic allografts procured from NHBDs.
Collapse
Affiliation(s)
- K Fukunaga
- Department of Surgery, Institute of Clinical Medicine, Tsukuba University, Tsukuba City, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Taniguchi H, Sugioka A, Morita M, Hasumi A, Takada Y, Fukunaga K, Yuzawa K, Otsuka M, Fukao K, Nakauchi H. Is donor-derived long-term and multilineage hematopoiesis established after liver transplantation? Transplant Proc 1998; 30:3865-6. [PMID: 9838691 DOI: 10.1016/s0041-1345(98)01267-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- H Taniguchi
- Department of Surgery, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Takada Y, Fukunaga K, Taniguchi H, Yuzawa K, Otsuka M, Fukao K. Energy metabolism of hepatic allografts subjected to prolonged warm ischemia and pharmacologic modulation with FK506 and platelet activating factor antagonist. Transplant Proc 1998; 30:3694-5. [PMID: 9838621 DOI: 10.1016/s0041-1345(98)01197-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Y Takada
- Department of Surgery, Institute of Clinical Medicine, Tsukuba University, Japan
| | | | | | | | | | | |
Collapse
|
49
|
Taniguchi H, Takada Y, Fukunaga K, Yuzawa K, Otsuka M, Todoroki K, Fukao K. Establishment of a swine model for auxiliary partial orthotopic liver transplantation. Transplant Proc 1998; 30:3232-6. [PMID: 9838428 DOI: 10.1016/s0041-1345(98)01006-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- H Taniguchi
- Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
| | | | | | | | | | | | | |
Collapse
|
50
|
Fukunaga K, Takada Y, Taniguchi H, Yuzawa K, Otsuka M, Todoroki T, Goto K, Fukao K. Protecting the viability of hepatic allografts procured from non-heart-beating donors by blockade of endothelin and platelet activating factor in porcine liver transplantation. Int Surg 1998; 83:226-31. [PMID: 9870780] [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: 02/09/2023] Open
Abstract
PROBLEM The function of hepatic allograft from non-heartbeating donors (NHBD) is significantly affected by warm ischemic injury before harvesting. MATERIALS AND METHODS The effects of the endothelin (ET) antagonist TAK-044 and the platelet activating factor (PAF) antagonist E5880 on the function of grafts from NHBD were evaluated in a porcine orthotopic liver transplantation. The liver grafts were subjected to 90 min of warm ischemia and 4 hours cold preservation. Group 1 (n = 4; n is the number of donor/recipient pairs) was used as a control (untreated). In group 2 (n = 4), donors and recipients were treated with TAK-044 (3 mg/kg). In group 3 (n = 4), pigs were treated with E5880 (0.3 mg/kg). In group 4 (n = 4), pigs were treated with TAK-044 and E5880. RESULTS The 7 day survival rate of the recipients in groups 1, 2, 3 and 4 was 0, 25, 25 and 100%, respectively (p<0.05, group 1 versus 4). The increases of the serum concentrations of aspartate transaminase, lactate dehydrogenase and arterial lactate 1-4 hours after transplantation were significantly inhibited in the treated groups. CONCLUSION The blockade of ET and PAF has protective effects on the function of hepatic grafts from NHBD.
Collapse
Affiliation(s)
- K Fukunaga
- Department of Surgery, Institute of Clinical Medicine, Tsukuba University, Tsukuba City, Ibaraki, Japan
| | | | | | | | | | | | | | | |
Collapse
|