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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Koyama AH, Fukumori T, Fujita M, Irie H, Adachi A. Physiological significance of apoptosis in animal virus infection. Microbes Infect 2000; 2:1111-7. [PMID: 10967291 DOI: 10.1016/s1286-4579(00)01265-x] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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.
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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] [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.
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Akari H, Fukumori T, Adachi A. Cell-dependent requirement of human immunodeficiency virus type 1 gp41 cytoplasmic tail for Env incorporation into virions. J Virol 2000; 74:4891-3. [PMID: 10775630 PMCID: PMC112014 DOI: 10.1128/jvi.74.10.4891-4893.2000] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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.
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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] [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.
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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] [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.
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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] [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.
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Sakai K, Horiuchi M, Iida S, Fukumori T, Akari H, Adachi A. Mutational analysis of human immunodeficiency virus type 1 vif gene. Virus Genes 1999; 18:179-81. [PMID: 10403705 DOI: 10.1023/a:1008089207013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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.
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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] [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.
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Fukumori T, Kagawa S, Iida S, Oshima Y, Akari H, Koyama AH, Adachi A. Rev-dependent expression of three species of HIV-1 mRNAs (review). Int J Mol Med 1999; 3:297-302. [PMID: 10028055 DOI: 10.3892/ijmm.3.3.297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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.
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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
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Tsukamoto S, Ohkohchi N, Fukumori T, Satomi S. Microcirculatory disturbance is an obstacle to liver transplantation from agonal NHBD. Transplant Proc 1999; 31:1091-3. [PMID: 10083487 DOI: 10.1016/s0041-1345(98)01916-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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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. THE JOURNAL OF MEDICAL INVESTIGATION 1999; 46:43-7. [PMID: 10408156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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.
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Fukumori T, Ohkohchi N, Tsukamoto S, Satomi S. Why is a liver with steatosis susceptible to cold ischemic injury? Transplant Proc 1999; 31:548-9. [PMID: 10083231 DOI: 10.1016/s0041-1345(98)01549-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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39
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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] [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.
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Fukumori T, Ohkohchi N, Tsukamoto S, Satomi S. The mechanism of injury in a steatotic liver graft during cold preservation. Transplantation 1999; 67:195-200. [PMID: 10075580 DOI: 10.1097/00007890-199901270-00002] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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.
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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. THE JOURNAL OF MEDICAL INVESTIGATION 1998; 45:37-45. [PMID: 9864963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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.
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Fukumori T, Akari H, Iida S, Hata S, Kagawa S, Aida Y, Koyama AH, Adachi A. The HIV-1 Vpr displays strong anti-apoptotic activity. FEBS Lett 1998; 432:17-20. [PMID: 9710242 DOI: 10.1016/s0014-5793(98)00824-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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.
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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] [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.
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Shimano R, Iida S, Fukumori T, Yamamoto Y, Kawamura M, Furuta RA, Adachi A. Inhibition of HIV replication by capsid mutant C6b. Biochem Biophys Res Commun 1998; 242:313-6. [PMID: 9446791 DOI: 10.1006/bbrc.1997.7963] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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.
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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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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46
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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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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47
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Ashida S, Yamamoto A, Fukumori T, Yuasa K, Terao N, Iwata J. [A case of chromophobe cell renal carcinoma]. HINYOKIKA KIYO. ACTA UROLOGICA JAPONICA 1997; 43:777-80. [PMID: 9436020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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.
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Fukumori T, Yamamoto A, Ashida S, Komatsu F, Matsumoto S, Yuasa K, Terao N. Extracorporeal shock wave lithotripsy-induced renal laceration. Int J Urol 1997; 4:419-21. [PMID: 9256335 DOI: 10.1111/j.1442-2042.1997.tb00219.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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.
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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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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50
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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. ACTA UROLOGICA JAPONICA 1995; 41:687-91. [PMID: 7484534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [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.
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