1
|
Kurioka T, Mizutari K, Niwa K, Fukumori T, Inoue M, Hasegawa M, Shiotani A. Hyaluronic acid pretreatment for Sendai virus-mediated cochlear gene transfer. Gene Ther 2015; 23:187-95. [PMID: 26361273 DOI: 10.1038/gt.2015.94] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 08/19/2015] [Accepted: 09/04/2015] [Indexed: 12/14/2022]
Abstract
Gene therapy with viral vectors is one of the most promising strategies for sensorineural hearing loss. However, safe and effective administration of the viral vector into cochlear tissue is difficult because of the anatomical isolation of the cochlea. We investigated the efficiency and safety of round window membrane (RWM) application of Sendai virus, one of the most promising non-genotoxic vectors, after pretreatment with hyaluronic acid (HA) on the RWM to promote efficient viral translocation into the cochlea. Sendai virus expressing the green fluorescent protein reporter gene was detected throughout cochlear tissues following application combined with HA pretreatment. Quantitative analysis revealed that maximum expression was reached 3 days after treatment. The efficiency of transgene expression was several 100-fold greater with HA pretreatment than that without. Furthermore, unlike the conventional intracochlear delivery methods, this approach did not cause hearing loss. These findings reveal the potential utility of gene therapy with Sendai virus and HA for treatment of sensorineural hearing loss.
Collapse
Affiliation(s)
- T Kurioka
- Department of Otolaryngology, Head and Neck Surgery, National Defense Medical College, Saitama, Japan
| | - K Mizutari
- Department of Otolaryngology, Head and Neck Surgery, National Defense Medical College, Saitama, Japan
| | - K Niwa
- Department of Otolaryngology, Head and Neck Surgery, National Defense Medical College, Saitama, Japan
| | - T Fukumori
- Department of Otolaryngology, Head and Neck Surgery, National Defense Medical College, Saitama, Japan
| | - M Inoue
- DNAVEC Corporation, Ibaraki, Japan
| | | | - A Shiotani
- Department of Otolaryngology, Head and Neck Surgery, National Defense Medical College, Saitama, Japan
| |
Collapse
|
2
|
Izaki H, Takahashi M, Takemura M, Nakatsuji H, Yamamoto Y, Fukumori T, Kanayama H. UP-01.003 The Indication and Limit of Laparoscopic Adrenalectomy for Pheochromocytoma. Urology 2011. [DOI: 10.1016/j.urology.2011.07.555] [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: 10/16/2022]
|
3
|
Yamamoto Y, Takahashi M, Tsuda M, Takemura M, Nakatsuji H, Izaki H, Fukumori T, Kanayama H. UP-03.191 Clinical Experience of Interstitial Cystitis Treated with Hydrodistension. Urology 2011. [DOI: 10.1016/j.urology.2011.07.1279] [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: 11/25/2022]
|
4
|
Gadelmoula M, Fukumori T, Nakatsuji H, Osman M, Toida K, Kanayama H. UP-01.143 Loss of the Tight Junction Protein Claudin-7 Correlates with Carcinogenesis and Grading of the Clear Cell Renal Cell Carcinoma. Urology 2011. [DOI: 10.1016/j.urology.2011.07.695] [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: 11/26/2022]
|
5
|
Takemura M, Izaki H, Takahashi M, Yamamoto Y, Nakatsuji H, Fukumori T, Kanayama H. MP-02.05 Laparoscopic Adrenalectomy for Adrenal Metastases: Points of Controversy. Urology 2011. [DOI: 10.1016/j.urology.2011.07.032] [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: 10/16/2022]
|
6
|
Takahashi M, Kawabata R, Kawano A, Murakami Y, Sutou Y, Inai T, Akazawa S, Hamao T, Hayashi H, Fukawa T, Takemura M, Yamamoto Y, Yamaguchi K, Nakatsuji H, Kishimoto T, Izaki H, Fukumori T, Kanayama H. A multicenter, randomized phase II study of the second-line maximum androgen blockade with an alternative antiandrogen combined with tegafur-uracil (UFT) for prostate cancer with relapse after initial hormonal therapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.4624] [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: 11/20/2022] Open
|
7
|
Hatsugai K, Ohkohchi N, Fukumori T, Akamatsu Y, Satomi S. Mechanism of primary graft non-function in a rat model for fatty liver transplantation. Transpl Int 2011. [DOI: 10.1111/j.1432-2277.2000.tb02111.x] [Citation(s) in RCA: 8] [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: 11/30/2022]
|
8
|
Kanayama H, Takahashi M, Fukumori T, Kawabata R, Kawano A, Murakami Y, Sutou Y, Inai T, Akazawa S, Hamao T. A multicenter, randomized phase II study of second-line maximum androgen blockade with an alternative antiandrogen combined with tegafur-uracil (UFT) for prostate cancer with relapse after initial hormonal therapy. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e15030] [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: 11/20/2022] Open
|
9
|
Sato A, Amada N, Kikuchi H, Fukumori T, Haga I, Takahashi Y. Pneumonia Due to Varicella-Zoster Virus Reinfection in a Renal Transplant Recipient. Transplant Proc 2009; 41:3959-61. [DOI: 10.1016/j.transproceed.2009.06.195] [Citation(s) in RCA: 9] [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] [Received: 04/21/2009] [Accepted: 06/19/2009] [Indexed: 11/16/2022]
|
10
|
Amada N, Kikuchi H, Haga I, Fukumori T, Sato A, Sato T. Successful Steroid Withdrawal After Long-Term Adminstration in Renal Transplant Patients. Transplant Proc 2009; 41:135-7. [DOI: 10.1016/j.transproceed.2008.10.082] [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] [Received: 07/10/2008] [Revised: 09/13/2008] [Accepted: 10/15/2008] [Indexed: 11/27/2022]
|
11
|
Nakamura A, Akamatsu Y, Miyagi S, Fukumori T, Sekiguchi S, Satomi S. A free radical scavenger, edaravone, prevents ischemia-reperfusion injury in liver grafts from non-heart-beating donors. Transplant Proc 2008; 40:2171-4. [PMID: 18790183 DOI: 10.1016/j.transproceed.2008.06.049] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Due to the increase in liver transplantation, the donor shortage has become a serious problem, requiring marginal, non-heart-beating donors (NHBDs). The aims of this study were to evaluate the cytoprotective effect of edaravone, a free radical scavenger, on warm ischemia-reperfusion (I/R) injury of liver grafts from NHBDs. METHODS Rat livers were harvested from heart-beating donors (HB group) or from NHBDs undergoing cardiac arrest for 30 minutes led by thoracotomy (NHB group), and reperfused for 60 minutes with Krebs-Henseleit bicarbonate buffer after cold preservation for 6 hours. In another group (ED group), warm ischemic livers from NHBDs were reperfused with buffer containing edaravone (1 mg/L) after cold preservation. RESULTS In the ED group, portal flow volume, bile production, and energy charge were significantly ameliorated. Lipid peroxidation, elevation of hepatic enzymes, and release of tumor necrosis factor-alpha and interleukin-1 beta were significantly alleviated, compared with the NHB group. CONCLUSIONS These results suggested that edaravone has suppressive effects on warm I/R injury in liver grafts from NHBDs.
Collapse
Affiliation(s)
- A Nakamura
- Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine, Sendai, Japan.
| | | | | | | | | | | |
Collapse
|
12
|
Fukumori T, Oka N, El-Moula M, Nakanishi R, Taue R, Kishimoto T, Izaki H, Takahashi M, Kagawa S, Kanayama H. MP-16.09: Galectin-3 is overexpressed in renal cell carcinoma and it regulates immune suppression through the induction of apoptosis of cytotoxic T cells. Urology 2007. [DOI: 10.1016/j.urology.2007.06.469] [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: 11/24/2022]
|
13
|
Izaki H, El-Moula M, Fukumori T, Takahashi M, Taue R, Kishimoto T, Kagawa S, Kanayama H. MP-06.04: Hem-o-lok polymer ligating clip for vascular control of the renal pedicle: points of controversy. Urology 2007. [DOI: 10.1016/j.urology.2007.06.268] [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]
|
14
|
Taue R, Izaki H, Gad El-Moul M, Kishimoto T, Fukumori T, Takahashi M, Kagawa S, Kanayama H. POS-03.33: Transperitoneal versus retroperitoneal laparoscopic radical nephrectomy: patient selection and perioperative outcomes: a single-center experience. Urology 2007. [DOI: 10.1016/j.urology.2007.06.1022] [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: 11/26/2022]
|
15
|
Sotowa KI, Irie K, Fukumori T, Kusakabe K, Sugiyama S. Droplet Formation by the Collision of Two Aqueous Solutions in a Microchannel and Application to Particle Synthesis. Chem Eng Technol 2007. [DOI: 10.1002/ceat.200600345] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
16
|
Sato K, Sekiguchi S, Fukumori T, Kawagishi N, Akamastu Y, Enomoto Y, Iwane T, Fujimori K, Sato A, Satomi S. Experience With Recipient’s Superficial Femoral Vein as Conduit for Middle Hepatic Vein Reconstruction in a Right-Lobe Living Donor Liver Transplant Procedure. Transplant Proc 2005; 37:4343-6. [PMID: 16387116 DOI: 10.1016/j.transproceed.2005.11.039] [Citation(s) in RCA: 10] [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: 01/06/2023]
Abstract
Middle hepatic vein reconstruction during the right-lobe living donor liver transplant procedure has been recognized to be a significant factor. We initially reconstructed only a single middle hepatic vein orifice draining into segment 8. In cases where the right-lobe liver graft has several major middle hepatic vein tributaries, including veins draining segment 5 that are remote from the right hepatic vein orifice, a long and thick interposition conduit is necessary for reconstruction. Among 11 consecutive adult patients who received a right-lobe liver graft without a middle hepatic vein at our institution, 8 underwent reconstruction of all major middle hepatic vein tributaries using a vein graft from the recipient's superficial femoral vein. The remaining 3 patients had no major middle hepatic vein tributaries. Posttransplant-computed tomography imagings showed increased liver mass with a patent superficial femoral vein graft in 8 patients. In the absence of a venous system from a deceased donor, a recipient superficial femoral vein offers an excellent size match to maintain the venous outflow of middle hepatic vein tributaries. Reconstruction with recipient superficial femoral vein plays an important role in maximizing liver function and minimizing morbidity in the early posttransplant period.
Collapse
Affiliation(s)
- K Sato
- Department of Surgery, Graduate School of Medicine, University of Tohoku, Sendai, Japan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
Kawagishi N, Satoh K, Enomoto Y, Akamatsu Y, Sekiguchi S, Fukumori T, Fujimori K, Satomi S. New strategy for ABO-incompatible living donor liver transplantation with anti-CD20 antibody (rituximab) and plasma exchange. Transplant Proc 2005; 37:1205-6. [PMID: 15848670 DOI: 10.1016/j.transproceed.2004.12.114] [Citation(s) in RCA: 26] [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] [Indexed: 12/22/2022]
Abstract
It is more difficult to control humoral rejection in living donor liver transplantations (LDLT) across the ABO blood group barrier than in matched or compatible combinations. We achieved excellent results in ABO-incompatible transplantation with novel immunosuppressive regimens and plasma exchange (PE). Among 82 LDLT were 10 cases of ABO-incompatible recipients, including three who were administered rituximab for rescue or prophylactic therapy. Pretransplantation PE was performed as necessary to maintain hemagglutinin titers below 1:16 and posttransplantation PE was performed when there were signs of hyperacute rejection associated with high titers. Induction immunosuppression consisted of FK506, steroid, mycophenolate mofetil (MMF), and rituximab. The first patient was administered rituximab with deoxyspergualin (DSG), steroid pulse therapy, and PE on postoperative day (POD) 7, because of biopsy-proven humoral acute rejection. The titers and LFTs improved drastically. The second and third patients were administered rituximab just after the operation with other routine immunosuppressants for prophylaxis of hyperacute rejection. The second patient showed a slight deterioration in LFTs with an elevated titer, which normalized after steroid pulse therapy and PE. The third patient had no episodes of rejection. At present, that is 27, 17, and 6 months after the operations respectively, the 3 transplant recipients are in stable condition.
Collapse
Affiliation(s)
- N Kawagishi
- Division of Advanced Surgical Science and Technology, Graduate School of Medicine, Tohoku University, Sendai, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Tryphonopoulos P, Icardi M, Salgar S, Fukumori T, Kato T, Gandia C, Esquenazi V, Ricordi C, Michalopoulos G, Miller J, Ruiz P, Tzakis A. Male enterocytes in female intestinal grafts. Transplant Proc 2002; 34:884. [PMID: 12034221 DOI: 10.1016/s0041-1345(02)02652-0] [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: 11/24/2022]
|
19
|
Tatsumi N, Tsuda I, Fukumori T, Hino M, Takubo T, Kondo H. A centrifuge-less plasma separation method from whole blood anticoagulated with EDTA-2K for the use of clinical laboratory tests. Osaka City Med J 2001; 47:177-88. [PMID: 11906128] [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: 02/24/2023]
Abstract
In the modern medical laboratory system, simple and rapid processing of specimens are required. In the current system with the transportation line, its centrifugation part would disturb smooth flow of the testing because it needs much time for the centrifugation. To solve the problems, a serum separation method was tried for the whole blood specimen using poly-L-lysine, concanavalin A and phyto-hemoagglutinin. Ploy-L-lysine with molecular weight 130,000 to 210,000 in a final concentration of 0.1% could accelerate blood sedimentation, although its supernatant contaminated platelets. Concanavalin and phytohemoagulutinin could accelerate the sedimentation and obtained plasma, but the method could yield enough amount of supernatant by 1 hour standing. As the purpose of this study is to develop a centrifugeless method, a sieve method using a steel mesh and a magnet was applied to the mixture of EDTA blood, red-cell adhesives and thrombin. The method was unique to separate plasma, but the yield was not so high and chemistry data were not fitted with serum data in some of tests. Thus, the trial would be a new technology, but it was judged that some further improvement will be needed technically.
Collapse
Affiliation(s)
- N Tatsumi
- Department of Clinical & Laboratory Medicine, Osaka City University Medical School, Osaka, Japan
| | | | | | | | | | | |
Collapse
|
20
|
Yamanaka M, Kanda K, Li NC, Fukumori T, Oka N, Kanayama HO, Kagawa S. Analysis of the gene expression of SPARC and its prognostic value for bladder cancer. J Urol 2001; 166:2495-9. [PMID: 11696817] [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: 02/22/2023]
Abstract
PURPOSE We analyzed the gene expression of the glycoprotein termed secreted protein, acidic and rich in cysteine (SPARC), also called osteonectin and BM40, in bladder cancer and its relationship with conventional clinical-histopathological manifestations, evaluated its prognostic value for patient outcome and determined the possible mechanism underlying the effect of SPARC on bladder cancer progression. MATERIALS AND METHODS Tissue samples from 63 patients with bladder cancer were used for analysis. Gene expression levels of SPARC and matrix metalloproteinase-2 were analyzed using reverse transcription-polymerase chain reaction. Correlations of the expression of SPARC with histopathological findings or patient outcome and with matrix metalloproteinase-2 were evaluated. RESULTS Significantly higher expression of SPARC was observed in grades 3 and 2 than in grade 1 tumors (p <0.001 and <0.05, respectively). Stage T2 or greater invasive tumors expressed a significantly higher level of SPARC than stages T1 or less superficial tumors (p <0.0001). Patients in whom the lesions showed high SPARC expression had a significantly worse prognosis than those with low SPARC expression disease (p <0.0001). Even in those with invasive bladder cancer high SPARC expression was associated with significantly worse survival than low expression (p <0.01). Moreover, gene expression of SPARC significantly correlated with matrix metalloproteinase-2 gene expression (p <0.0001), implying that regulation of matrix metalloproteinase-2 expression may be a possible mechanism underlying the effect of SPARC on bladder cancer progression. CONCLUSIONS A significant correlation was detected of the gene expression level of SPARC with histological grade, pathological stage and bladder cancer prognosis. SPARC may have an important role in bladder cancer progression and provide some additional information in patients with bladder cancer.
Collapse
Affiliation(s)
- M Yamanaka
- Department of Urology, University of Tokushima School of Medicine, Tokushima, Japan
| | | | | | | | | | | | | |
Collapse
|
21
|
Hatsugai K, Ohkohchi N, Fukumori T, Akamatsu Y, Satomi S. Mechanism of primary graft non-function in a rat model for fatty liver transplantation. Transpl Int 2001; 13 Suppl 1:S583-90. [PMID: 11112079 DOI: 10.1007/s001470050408] [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: 11/25/2022]
Abstract
We established a fatty liver model in rat suitable for the model of human liver with steatosis by cholesterol enriched chow, and investigated the mechanism of primary graft non-function in fatty liver transplantation (LTx) using this model. Grafts with steatosis caused primary graft dysfunction after LTx following even short cold preservation; however, no significant difference was recognized in mitochondrial function of the graft during preservation. Morphological findings were not different at 1 h after reperfusion between non-steatotic and steatotic livers. Focal necrosis of hepatocytes was seen and the sinusoidal endothelial cells were injured 24 h after reperfusion. In addition, the fluidity of the plasma membrane decreased in fatty liver. Our results indicate that deterioration of sinusoidal endothelial cells after reperfusion causes graft dysfunction in LTx of steatotic liver.
Collapse
Affiliation(s)
- K Hatsugai
- The Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | | | |
Collapse
|
22
|
Abstract
Bladder involvement in amyloidosis is unusual. The case of an 80-year-old man with macroscopic hematuria caused by secondary amyloidosis of the bladder is described. Cystoscopic examination revealed only a diffuse edematous area and bleeding. No tumor-like lesions were identified. Transurethral biopsy revealed amyloid deposits. Macroscopic hematuria disappeared spontaneously after cystoscopy and bladder biopsy. The patient has been followed up without treatment and is currently free of symptoms.
Collapse
Affiliation(s)
- N Oka
- Department of Urology, The University of Tokushima School of Medicine, Tokushima, Japan.
| | | | | | | | | |
Collapse
|
23
|
Seya K, Ohkohchi N, Shibuya H, Satoh M, Oikawa K, Fukumori T, Satomi S, Motomura S. A chemiluminescent assay for hydroperoxide level of phosphatidylcholine hydroperoxide fraction purified by two Sep-Pak cartridges in biological samples. J Pharm Biomed Anal 2000; 23:515-20. [PMID: 10933545 DOI: 10.1016/s0731-7085(00)00316-2] [Citation(s) in RCA: 4] [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: 10/18/2022]
Abstract
A chemiluminescent assay for hydroperoxide level of phosphatidylcholine hydroperoxide (PCOOH) fraction purified from biological samples was presented. This method utilized of two Sep-Pak cartridges. A lipid soluble fraction was isolated from each homogenized tissue or blood by Folch's method. The mixture of phosphatidylcholine (PC) and PCOOH was separated from the lipid soluble fraction by a Sep-Pak silica cartridge. A Sep-Pak tC18 cartridge made complete separation of both PCOOH and PC possible. The hydroperoxide level of PCOOH fraction was quantified by the reaction with ferrous ion using 2-methyl-6-[p-methoxyphenyl]-3,7-dihydroimidazo[1,2-a]pyrazin++ +-3-one as a chemiluminescent dye. The mixture of positional isomers, 1-hexadecanoyl-2-[9, or 10-hydroperoxyl octadecanoyl]-sn-glycero-3-phosphocholine was used as an authentic standard. The good recovery rate for authentic PCOOH of 87.1 +/- 11.6% (mean +/- S.E., n = 4) was obtained by using two Sep-Pak cartridges. Linear calibration curve was obtained in the range from 2.5 to 20 nmol, and the detection limit of the standard was 10 pmol (signal-to-noise ratio > 3). This method was applied to the investigation of the lipid peroxidation induced by reperfusion of the liver with cold preservation, mimicking liver transplantation in rats. The effect of liposome-encapsulated dichloromethylene diphosphonate (LEDD), which eliminate of Kupffer cells to prevent the generation of oxygen radicals on the lipid peroxidation, was compared with the untreated group as a control. After 1 h reperfusion at 37 degrees C the hydroperoxide level obtained the liver without preservation in the untreated group was 12.4 +/- 2.4 nmol/100 mg lipid (n = 4) and levels increased significantly by prolongation of the preservation time. On the other hand, the hydroperoxide level in the LEDD treated group did not change up to 24 h preservation. These results suggest that this improved assay for hydroperoxide level of PCOOH fraction in biological samples can be applied to investigations involving lipid peroxidation because of its simplicity and accuracy.
Collapse
Affiliation(s)
- K Seya
- Department of Pharmacology, Hirosaki University School of Medicine, Japan.
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Akari H, Yoshida A, Fukumori T, Adachi A. Host cell-dependent replication of HIV-1 mutants with deletions in gp41 cytoplasmic tail region is independent of the function of Vif. Microbes Infect 2000; 2:1019-23. [PMID: 11032465 DOI: 10.1016/s1286-4579(00)01256-9] [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: 10/18/2022]
Affiliation(s)
- H Akari
- Department of Virology, The University of Tokushima School of Medicine, Tokushima, Japan
| | | | | | | |
Collapse
|
25
|
Yoshida A, Miyaura M, Sakurai A, Fukumori T, Fujita M, Akari H, Adachi A. MHC-I expression in HTLV-1-positive and -negative cells. Int J Mol Med 2000; 6:83-6. [PMID: 10851271] [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: 02/16/2023] Open
Abstract
The expression level of major histocompatibility class I (MHC-I) and the extent of down-regulation of MHC-I after an anti-MHC-I antibody treatment in numerous human T-cell leukemia virus type 1 (HTLV-1)-positive and -negative lymphocytic cell lines were examined. While there was no clear correlation between the expression level of MHC-I and the presence of HTLV-1 genome, a relatively low level of MHC-I down-regulation was generally induced in HTLV-1-positive cells by the antibody. The results may suggest the potential involvement of MHC-I in HTLV-1 leukemogenesis.
Collapse
Affiliation(s)
- A Yoshida
- Department of Virology, The University of Tokushima School of Medicine, Tokushima 770-8503, Japan
| | | | | | | | | | | | | |
Collapse
|
26
|
Yoshida A, Miyaura M, Sakurai A, Fukumori T, Fujita M, Akari H, Adachi A. MHC-I expression in HTLV-1-positive and -negative cells. Int J Mol Med 2000. [DOI: 10.3892/ijmm.6.1.83] [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: 11/05/2022] Open
|
27
|
Abstract
In contrast to insect viruses, animal viruses can produce considerable amounts of progeny virus in cells undergoing apoptosis. Nevertheless, viruses in general have acquired the ability to escape apoptosis of infected cells. These facts indicate that the role of apoptosis in virus infection is different in insect virus and animal virus, although both viruses need to avoid apoptosis of the infected cells for a viral life cycle in nature. In animal virus infection, the primary role of apoptosis is considered not to be a premature lysis of the infected cells (and the following abortion of virus multiplication) but to allow the dying cells to be phagocytosed by macrophages. This phagocytosis is able to prevent dysregulated inflammatory reactions at the site of virus infection and to initiate a specific immune response against the infected virus.
Collapse
Affiliation(s)
- A H Koyama
- Department of Virology, School of Medicine, The University of Tokushima, 770-8503, Tokushima, Japan
| | | | | | | | | |
Collapse
|
28
|
Fukumori T, Akari H, Yoshida A, Fujita M, Koyama AH, Kagawa S, Adachi A. Regulation of cell cycle and apoptosis by human immunodeficiency virus type 1 Vpr. Microbes Infect 2000; 2:1011-7. [PMID: 10967282 DOI: 10.1016/s1286-4579(00)01255-7] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Biological effects of HIV-1 Vpr on CD4(+) cells were studied by an infection system. High-titered HIV-1 stocks pseudotyped with vesicular stomatitis virus G protein were prepared and used to inoculate into CD4(+ )T cells at high multiplicity of infection. Both cell- and virion-associated Vpr were demonstrated to arrest the cell cycle at the G2/M phase, and to induce cell apoptosis. Of note, morphologically apoptotic cells were shown to be arrested at the G2/M stage. No appreciable effect of Vpr on the anti-Fas antibody-mediated apoptosis was observed in this system.
Collapse
Affiliation(s)
- T Fukumori
- Department of Virology, The University of Tokushima School of Medicine, 770-8503, Tokushima, Japan
| | | | | | | | | | | | | |
Collapse
|
29
|
Abstract
Growth kinetics in lymphocytic H9 and M8166 cells of two mutants of human immunodeficiency virus type 1 (HIV-1) with deleted gp41 cytoplasmic tails were examined. While the mutant viruses designated CTdel-44 and CTdel-144 were able to grow in M8166 cells, they were unable to grow in H9 cells. Transfection and single-round infectivity assays demonstrated that they are defective in the early phase of viral replication in H9 cells. Analysis of the mutant virions revealed drastically reduced incorporation of Env gp120 (compared with the incorporation of wild-type virions) in H9 cells but normal incorporation in M8166 cells. These results indicate that the HIV-1 cytoplasmic tail of gp41 determines virus infectivity in a cell-dependent manner by affecting incorporation of Env into virions and suggest the involvement of a host cell factor(s) in the Env incorporation.
Collapse
Affiliation(s)
- H Akari
- Department of Virology, The University of Tokushima School of Medicine, Tokushima 770-8503, Japan
| | | | | |
Collapse
|
30
|
Akari H, Arold S, Fukumori T, Okazaki T, Strebel K, Adachi A. Nef-induced major histocompatibility complex class I down-regulation is functionally dissociated from its virion incorporation, enhancement of viral infectivity, and CD4 down-regulation. J Virol 2000; 74:2907-12. [PMID: 10684310 PMCID: PMC111784 DOI: 10.1128/jvi.74.6.2907-2912.2000] [Citation(s) in RCA: 94] [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
The N-terminal alpha-helix domain of the human immunodeficiency virus type 1 (HIV-1) Nef protein plays important roles in enhancement of viral infectivity, virion incorporation of Nef, and the down-regulation of major histocompatibility complex class I (MHC-I) expression on cell surfaces. In this study, we demonstrated that Met 20 in the alpha-helix domain was indispensable for the ability of Nef to modulate MHC-I expression but not for other events. We also showed that Met 20 was unnecessary for the down-regulation of CD4. These findings indicate that the region governing MHC-I down-regulation is proximate in the alpha-helix domain but is dissociated functionally from that determining enhancement of viral infectivity, virion incorporation of Nef, and CD4 down-regulation.
Collapse
Affiliation(s)
- H Akari
- Department of Virology, The University of Tokushima School of Medicine, Tokushima, Tokushima 770-8503, Japan.
| | | | | | | | | | | |
Collapse
|
31
|
Akari H, Fukumori T, Iida S, Adachi A. Induction of apoptosis in Herpesvirus saimiri-immortalized T lymphocytes by blocking interaction of CD28 with CD80/CD86. Biochem Biophys Res Commun 1999; 263:352-6. [PMID: 10491296 DOI: 10.1006/bbrc.1999.1364] [Citation(s) in RCA: 25] [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] [Indexed: 11/22/2022]
Abstract
We have previously shown that Herpesvirus saimiri (HVS) immortalizes primary macaque monkey T lymphocytes. In this study, we examined the characteristics of the immortalized T cells. The cells showed the phenotype of activated T lymphoblasts (CD3(+) CD25(+) CD69(+) MHC-IIDR(+)) and produced no infectious virus while viral DNA was detected in the Hirt DNA. Interestingly, both a major costimulatory molecule, CD28, and its ligands, CD80/CD86, were coexpressed on the immortalized T cells. The treatment of the cells with a neutralizing monoclonal antibody against CD28, which blocks interaction of CD28 with CD80/CD86, resulted in retarded cell growth and in induction of apoptosis. The effect of the antibody treatment was not overcome by exogenous interleukin-2 treatment. These findings demonstrate the requirement of interaction of CD28 with CD80/CD86 for the optimal growth of HVS-immortalized T cells.
Collapse
Affiliation(s)
- H Akari
- School of Medicine, University of Tokushima, 3 Kuramoto, Tokushima, 770-8503, Japan
| | | | | | | |
Collapse
|
32
|
Iida S, Fukumori T, Oshima Y, Akari H, Koyama AH, Adachi A. Compatibility of Vpu-like activity in the four groups of primate immunodeficiency viruses. Virus Genes 1999; 18:183-7. [PMID: 10403706 DOI: 10.1023/a:1008041323852] [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: 11/12/2022]
Abstract
Env-minus mutants of the viruses of major four human and simian immunodeficiency viruses (HIVs and SIVs) were monitored for their progeny virion production upon transfection into the cells, which are dependent on the HIV-1 Vpu for efficient particle release. Of the env mutants of HIV-1 (one mutant), HIV-2/SIVmac (three mutants), SIVagm (one mutant), and SIVmnd (one mutant) examined, the mutant of SIVmnd generated a very low level of progeny virions similar to that by the HIV-1 Vpu-minus mutant. This effect of the mutation was not observed in the cells which are independent on the Vpu for virion release. The Env of SIVmnd efficiently enhanced virion release of heterologous viruses like the HIV-1 Vpu.
Collapse
Affiliation(s)
- S Iida
- Department of Virology, The University of Tokushima School of Medicine, Japan
| | | | | | | | | | | |
Collapse
|
33
|
Abstract
Mutations were introduced into scattered regions of the HIV-1 vif gene. The twelve in-frame mutants generated were evaluated for the replication potentials in cells by transfection and infection experiments. All the mutants produced a normal level of progeny virions upon transfection, indicating the absence of the late function of HIV-1 Vif protein. The infectivity of virions obtained was monitored in H9 cells, which are non-permissive for HIV-1 without the Vif function. Most of the mutations in various parts of the vif gene, including those in the three conserved regions among HIV/SIV, abrogated the infectivity of the virus. In contrast, the cysteine residue at position 133, which was reported to be critical for viral infectivity, was found not to be essential. In addition, the C-terminal eight amino acid residues (185-192) in the Vif protein could be deleted with no effects on viral growth potential.
Collapse
Affiliation(s)
- K Sakai
- AIDS Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | | | | | | | | | | |
Collapse
|
34
|
Tsukamoto S, Ohkohchi N, Fukumori T, Orii T, Asakura T, Takayama J, Shibuya H, Kato H, Satomi S. Elimination of Kupffer cells and nafamostat mesilate rinse prevent reperfusion injury in liver grafts from agonal non-heart-beating donors. Transplantation 1999; 67:1396-403. [PMID: 10385076 DOI: 10.1097/00007890-199906150-00002] [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: 12/21/2022]
Abstract
BACKGROUND We hypothesized that microcirculatory disturbance was an obstacle to liver transplantation (LTx) from non-heart-beating donors (NHBDs) and that it was attributed mainly to a deterioration of sinusoidal endothelial cells (SECs) and sinusoidal narrowing. This study was designed to examine porcine orthotopic LTx using livers obtained from pretreated agonal NHBDs, and to determine whether the maintenance of the liver microcirculation would result in successful LTx from agonal NHBDs. METHODS Pigs were allocated to five groups: (i) control group; (ii) NM group, in which grafts were rinsed with nafamostat mesilate (NM) rinse; (iii) LD group, in which Kupffer cells in grafts were eliminated by liposome-encapsulated dichloromethylene diphosphonate (L-DMDP); (iv) LDNM group, in which grafts pretreated with L-DMDP were rinsed with NM rinse; (v) heart-beating donor (HBD) group. In all groups, but the HBD group, the livers were pretreated with FK506 and prostaglandin I2 analogue, and were preserved in University of Wisconsin solution after cardiac arrest. Thereafter orthotopic LTx was performed. RESULTS After reperfusion, it was histologically demonstrated that elimination of Kupffer cells prevented SECs deterioration and NM rinse prevented sinusoidal narrowing. The hepatic energy charge recovered in all groups except the control group. In the LDNM group, three of four recipients survived more than 7 days. CONCLUSIONS For a successful LTx from agonal NHBDs, it is important to prevent microcirculatory disturbance caused by SEC deterioration and sinusoidal narrowing after reperfusion. Combination therapy consisting in the elimination of Kupffer cells and NM rinse prevented primary graft non-function in liver grafts from agonal NHBDs.
Collapse
Affiliation(s)
- S Tsukamoto
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Abstract
The expression of structural and accessory genes of human immunodeficiency virus type 1 (HIV-1) except for nef requires a viral regulatory protein Rev. Rev-dependency of the expression of structural (gag, pol and env), regulatory (tat and rev), and accessory genes (vif, vpr, vpu and nef) has been investigated by various systems, and it has been demonstrated that unspliced (encodes gag and pol) and singly-spliced (env-vpu, vif and vpr) viral mRNAs are differentially dependent on the function of Rev. In this review, the function of HIV-1 Rev in relation to these findings is discussed.
Collapse
MESH Headings
- Gene Expression Regulation, Viral
- Gene Products, rev/metabolism
- Gene Products, tat/metabolism
- Genes, Reporter
- Genes, Viral/genetics
- HIV-1/genetics
- Humans
- RNA Splicing/genetics
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Viral/genetics
- RNA, Viral/metabolism
- rev Gene Products, Human Immunodeficiency Virus
- tat Gene Products, Human Immunodeficiency Virus
Collapse
Affiliation(s)
- T Fukumori
- Department of Urology, The University of Tokushima School of Medicine, Tokushima 770-8503, Japan
| | | | | | | | | | | | | |
Collapse
|
36
|
Affiliation(s)
- S Tsukamoto
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | |
Collapse
|
37
|
Iida S, Fukumori T, Oshima Y, Koyama AH, Adachi A. Growth characteristics of T-cell tropic HIV-1 vpu gene mutants in human peripheral blood mononuclear cells. J Med Invest 1999; 46:43-7. [PMID: 10408156] [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: 02/13/2023]
Abstract
A mutant designated NL-E65, which lacks the expression of entire vpu gene, was constructed from T-cell tropic wild-type (wt) human immunodeficiency virus type 1 (HIV-1) clone and monitored for its replication property in human cells, along with a mutant NL-Ss which expresses a C-terminal truncated Vpu. The mutant NL-Ss could grow in two cell lines and in all peripheral blood mononuclear cell (PBMC) preparations to some extent, with kinetics similar to those of wt virus. Likewise, the mutant NL-E65 exhibited a replication property typical to the vpu mutant in the two cell lines and in all PBMC cultures, growing at a low level. Along with the results previously reported, these data indicate that HIV-1 Vpu is dispensable for virus replication in any of the types of cells so far tested.
Collapse
Affiliation(s)
- S Iida
- Department of Virology, University of Tokushima School of Medicine, Japan
| | | | | | | | | |
Collapse
|
38
|
Affiliation(s)
- T Fukumori
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | |
Collapse
|
39
|
Adachi A, Iida S, Fukumori T, Tamaki M, Inubushi R, Shimano R, Oshima Y, Akari H, Koyama AH. Exchangeability of accessory Vif and Vpu proteins between various HIV/SIVs (review). Int J Mol Med 1999; 3:193-7. [PMID: 9917529 DOI: 10.3892/ijmm.3.2.193] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Representative human and simian immunodeficiency viruses (HIV/SIVs) have been monitored for their Vif and Vpu activities in a wide variety of cells. In contrast to the prototype HIV-1, viruses of the other groups do not necessarily have these activities. Only HIV-2 and SIVmnd were clearly demonstrated to show the Vif and Vpu activities, respectively. The exchangeability of these accessory activities between viruses was then assessed to determine the relatedness of the viruses. Quite different from the results for Tat and Rev trans-activators, the activities are almost fully compatible between viruses. These results may facilitate the functional grouping of various HIV/SIVs.
Collapse
Affiliation(s)
- A Adachi
- Department of Virology, The University of Tokushima School of Medicine, Tokushima 770-8503, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Abstract
BACKGROUND Fatty livers are more prone to primary nonfunction after transplantation. It is known that cell injury is strongly associated with alterations in the content and composition of membrane lipids. We assumed that plasma membrane (PM) fluidity, which is the most important property of the membrane, differed between fatty and normal livers. METHODS The livers from obese and lean Zucker rats were flushed with cold Ringer's lactate and University of Wisconsin (UW) solution via the portal vein and preserved in cold UW solution for 24 hr. Histological examinations of electron microscopy were performed to investigate of sinusoidal lining cells (SLCs). PMs were isolated using a discontinuous density gradient of Percoll, and the lipid compositions were determined by chromatography. RESULTS SLCs of fatty livers were markedly injured compared with control livers even after short preservation time. Moreover, many blebs were observed in the obese rats even after short preservation time. As for PM lipid composition, the cholesterol/phospholipid (PL) ratio of total PM was 0.14+/-0.03 in the obese rats and 0.21+/-0.03 in the lean rats (P<0.05). The relative proportions of polyunsaturated fatty acids among PLs in PM were 35.7+/-1.2% vs. 45.9+/-1.5% (P<0.0001). These results indicated that the fluidity of the PM in the obese rats is decreased after exposure to low temperatures. CONCLUSIONS Our results suggest that steatotic livers from obese donors are more susceptible to cold preservation injury than livers without steatosis because of the severe deterioration of SLCs, and it is associated with PM fluidity even after short-term cold preservation.
Collapse
Affiliation(s)
- T Fukumori
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | |
Collapse
|
41
|
Koyama AH, Irie H, Fukumori T, Hata S, Iida S, Akari H, Adachi A. Role of virus-induced apoptosis in a host defense mechanism against virus infection. J Med Invest 1998; 45:37-45. [PMID: 9864963] [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]
Abstract
Many animal viruses are known to induce apoptosis in infected cells. This virus-induced apoptosis has been often described as a mechanism of host defense against virus infection, based on the finding that mutants of an insect virus with the ability to induce extensive apoptosis in some cells cannot grow in the same cells. In animal virus infection, we have shown that (1) viruses can somehow overcome this defense mechanism and that (2) virus multiplication in the apoptotic cells is not as completely suppressed as in the insect virus infection. These results suggest that, in the case of animal viruses, the virus-induced apoptosis does not play the same role in the host defense system as in insect cells. However, by examining the virus infection under the conditions comparable to the infection in vivo, we demonstrated the defensive role of apoptosis in animal virus infection.
Collapse
Affiliation(s)
- A H Koyama
- Department of Virology, University of Tokushima School of Medicine, Japan
| | | | | | | | | | | | | |
Collapse
|
42
|
Abstract
Mutations in the human immunodeficiency virus type 1 (HIV-1) vpr gene only slightly reduce the replication rate of the virus. To study the role of HIV-1 Vpr in biological effects on cells, HEp-2 cells, which express HIV-1 Vpr constitutively but at a low level, were established. While control HEp-2 cells underwent apoptosis when incubated with sorbitol, the morphological and biochemical apoptotic changes were inefficiently induced in the HIV-1 Vpr-expressing cells by the same treatment. These results clearly indicate that HIV-1 Vpr has anti-apoptotic activity, and raise the possibility that Vpr acts as a weak activator of virus replication through anti-apoptosis.
Collapse
Affiliation(s)
- T Fukumori
- Department of Virology, The University of Tokushima School of Medicine, Japan
| | | | | | | | | | | | | | | |
Collapse
|
43
|
Shimano R, Inubushi R, Fukumori T, Tamaki M, Oshima Y, Kawamura M, Adachi A. Suppression of HIV-2 replication by HIV-1 gag mutants. Biochem Biophys Res Commun 1998; 248:418-21. [PMID: 9675152 DOI: 10.1006/bbrc.1998.8975] [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
Gag gene mutants of human immunodeficiency virus type 1 (HIV-1) were analyzed for their potentials of inhibiting the replication of wild-type (wt) HIV-2, the second AIDS virus, in a single-round of viral replication. Of twenty-two HIV-1 gag mutants examined, seven were found to efficiently interfere with the replication of wt HIV-2. Some mutants, which can suppress the replication of wt HIV-1, did not show this inhibitory effect. These mutants were defective at the late phase of viral replication. A mutant designated NL-C1a was demonstrated to be very effective against the replication of HIV-1 and HIV-2 in monocytic cells as well as in lymphocytic cells.
Collapse
Affiliation(s)
- R Shimano
- Department of Virology, The University of Tokushima School of Medicine, Tokushima, 770-8503, Japan
| | | | | | | | | | | | | |
Collapse
|
44
|
Abstract
A Gag capsid mutant of human immunodeficiency virus type 1 (HIV-1) designated C6b was biologically and biochemically characterized with respect to its ability to suppress the replication of wild-type (wt) HIV. The C6b efficiently interfered with the replication of wt HIV-1 in the cleavage of Gag precursor, and also in the early replication process before or during viral DNA synthesis after viral penetration. The C6b Gag appeared to be unable to form chimeric multimers with HIV-2 Gag and failed to inhibit the replication of wt HIV-2.
Collapse
Affiliation(s)
- R Shimano
- Department of Virology, School of Medicine, University of Tokushima, Japan
| | | | | | | | | | | | | |
Collapse
|
45
|
Tsukamoto S, Ohkohchi N, Orii T, Fukumori T, Asakura T, Takayama J, Kato H, Satomi S. Elimination of Kupffer cells and administration of protease inhibitor improve graft viability and prevent reperfusion injury in NHBD. Transplant Proc 1997; 29:3463-4. [PMID: 9414791 DOI: 10.1016/s0041-1345(97)00979-2] [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: 02/05/2023]
Affiliation(s)
- S Tsukamoto
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | | | | | | | | | |
Collapse
|
46
|
Fukumori T, Ohkohchi N, Tsukamoto S, Asakura T, Oikawa K, Takayama J, Orii T, Kato H, Satomi S. Long-term fasting of donors deteriorates mitochondrial adenosine triphosphate synthesis in liver grafts during cold preservation. Transplant Proc 1997; 29:3360-1. [PMID: 9414749 DOI: 10.1016/s0041-1345(97)00943-3] [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: 02/05/2023]
Affiliation(s)
- T Fukumori
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Ashida S, Yamamoto A, Fukumori T, Yuasa K, Terao N, Iwata J. [A case of chromophobe cell renal carcinoma]. Hinyokika Kiyo 1997; 43:777-80. [PMID: 9436020] [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: 02/05/2023]
Abstract
We report a case of chromophobe cell renal carcinoma. A 59-year-old female was admitted to our hospital with asymptomatic gross hematuria. Abdominal computerized tomography showed an approximately 4 cm. minimally enhancing mass in the left kidney. Angiography revealed a hypovascular tumor in the left kidney. Under the diagnosis of renal cell carcinoma, left radical nephrectomy was performed. The cut surface of the tumor was beige in color with few foci of hemorrhage and necrosis. Microscopically, the tumor was composed of the cells with voluminous reticulated cytoplasm stained lightly with routine hematoxylin and eosin. Hale's colloidal iron staining demonstrated a positive cytoplasmic reaction. Pathological diagnosis was chromophobe cell renal carcinoma. Chromophobe cell renal carcinoma is a recently established subtype of renal cell carcinoma, which has rarely been reported in Japan.
Collapse
Affiliation(s)
- S Ashida
- Department of Urology, Kochi Takasu Hospital
| | | | | | | | | | | |
Collapse
|
48
|
Abstract
After extracorporeal shock wave lithotripsy (ESWL), perinephric hematomas, while uncommon, are a serious complication involving the risk of blood transfusion and subsequent impairment of renal function. We report a rare case of ESWL-induced renal laceration in which an expanding retroperitoneal hematoma required blood transfusion but was treated successfully without surgical intervention.
Collapse
Affiliation(s)
- T Fukumori
- Department of Urology, Kochi Takasu Hospital, Takasushin-machi, Japan
| | | | | | | | | | | | | |
Collapse
|
49
|
Fukumori T, Ohkohchi N, Tsukamoto S, Satomi S. Why is fatty liver unsuitable for transplantation? Deterioration of mitochondrial ATP synthesis and sinusoidal structure during cold preservation of a liver with steatosis. Transplant Proc 1997; 29:412-5. [PMID: 9123060 DOI: 10.1016/s0041-1345(96)00158-3] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- T Fukumori
- Second Department of Surgery, Tohoku University School of Medicine, Sendai, Japan
| | | | | | | |
Collapse
|
50
|
Fukumori T, Nishikawa H, Yamamoto A, Takenaka A, Yuasa K, Terao N, Iwata J. [Sex cord/stromal tumor of the testis: a case report]. Hinyokika Kiyo 1995; 41:687-91. [PMID: 7484534] [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: 01/25/2023]
Abstract
We herein report a case of sex cord/stromal tumor of the testis. A 28-year-old man was admitted to our hospital with the chief complaint of painless swelling of the left scrotal contents. On examination, gynecomastia or swelling of superficial lymph nodes was not observed. With a diagnosis of left testicular tumor, left high orchiectomy was performed. Gross examination of the specimen demonstrated a mass measuring 20 x 18 x 14 mm within the testis. On the cut surface, the tumor was gray and was associated with focal hemorrhage and necrosis. The spermatic cord and epididymis were not involved by the tumor. Microscopically, the tumor demonstrated a mixed pattern consisting of, we thought, areas of Leydig-like cells as well as areas of Sertoli-like cells showing mild atypia. Without further treatment, the patient has remained free from the disease for over fifteen months since the operation. Fifty eight cases of sex cord/stromal tumor of the testis have been reported in the Japanese literature, but sex cord/stromal tumors, other than pure Leydig cell tumor or Sertoli cell tumor, are very rare. Only 4 cases have been reported including our case.
Collapse
Affiliation(s)
- T Fukumori
- Department of Urology, Kochi Takasu Hospital
| | | | | | | | | | | | | |
Collapse
|