76
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Yasuoka C, Kikuchi Y, Yasuoka A, Yamaguchi M, Yamamoto Y, Genka I, Teruya K, Tachikawa N, Shimpo T, Oka S. Successful treatment of acute myeloradiculoneuritis with high-dose corticosteroids in a patient with primary HIV-1 infection. Jpn J Infect Dis 2000; 53:171-2. [PMID: 11056563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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77
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Nishizawa S, Suzuki K, Tachikawa N, Nukui A, Kumamaru T, Shioji Y, Misumi Y, Mitsu S, Tokue A. [The vanishing testis: diagnosis and histological findings]. Nihon Hinyokika Gakkai Zasshi 2000; 91:537-41. [PMID: 10897578 DOI: 10.5980/jpnjurol1989.91.537] [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: 11/08/2022]
Abstract
PURPOSE Controversy exists on how to diagnose the vanishing testis and the degree of investigation required. In this series, we reviewed anatomical and histological findings in vanishing testes and investigated the effectiveness of diagnostic laparoscopy and imaging studies. MATERIALS AND METHODS Between 1974 and March 1999, 107 boys with nonpalpable testis underwent surgery. Of the total, 52 had spermatic vessels, vas deferens, and/or nubbin, and as a result the diagnosis of vanishing testis was made. RESULTS The affected side of vanishing testis was left 41, right 9 and bilateral 2.35 nubbins were found and the lengths of 24 nubbins were 5 mm or less. Histological examinations were performed in 43 cases including 27 nubbins. From that total, 31 had vas deferens and 11 had epididymis. Only two nubbins had seminiferous tubules but they included no germ cells. The two nubbins were greater than 5 mm long. Laparoscopic surgery was undertaken in 12 separate cases of the vanishing testis and as a result hypoplastic spermatic vessels were present in 7 of the 12 cases. CONCLUSION The incidence of viable testicular tissue in vanishing testes was 4.7% in our series and it ranges from 0-16% in other series. We submit that one can diagnose the inguinal vanishing testis with preoperative imaging and laparoscopy, and that the nubbin seldom contains testicular tissue. Our results do not support the necessity to remove nubbins.
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78
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Baba M, Oka H, Asayama M, Yoshinaga S, Yamashita H, Tachikawa N, Akiyama J, Yasuoka A, Oka S, Yamato S, Shoda R, Muraoka T, Masaki N, Matsueda K, Shimojo E, Hayashi S. Acute hepatitis outbreak in Tokyo caused by hepatitis A virus of common origin transmitted through oral and sexual routes. Jpn J Infect Dis 2000; 53:127-9. [PMID: 10957712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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79
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Gatanaga H, Yasuoka A, Kikuchi Y, Tachikawa N, Oka S. Influence of prior HIV-1 infection on the development of chronic hepatitis B infection. Eur J Clin Microbiol Infect Dis 2000; 19:237-9. [PMID: 10795602 DOI: 10.1007/s100960050468] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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80
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Nagao H, Tachikawa N, Uchida W, Taira K, Shiota M, Enomoto S. [Clinical study on risk management for dental implant treatment--Part 1. Clinical retrospective study on the medically compromised patients at clinic for oral implant]. KOKUBYO GAKKAI ZASSHI. THE JOURNAL OF THE STOMATOLOGICAL SOCIETY, JAPAN 2000; 67:18-22. [PMID: 10774155 DOI: 10.5357/koubyou.67.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
A retrospective study on medically compromised patients was made using 1,000 outpatients who visited the Clinic for Oral Implant, University Hospital, Faculty of Dentistry, Tokyo Medical and Dental University between April 1995 and June 1998. The results were as follows: 1. 35.3% (353 patients: 140 males and 213 females) of the outpatients were medically compromised. 2. The greatest number of medically compromised patients was in the 50-59 age group (118 cases), followed by those in the 40-49 and 60-69 age groups. 3. The highest ratio of medically compromised patients was in the 60-69 age group (48.2%), followed by those in the 70-79 and 50-59 age groups. 4. Among the 353 patients, 96 (27.2%) underwent surgical treatment such as insertion of implant (68 cases), removal of implant, extraction of tooth, and free gingival graft. 5. Among the 68 patients who underwent insertion of implant, in a classification by type of disease, the patients with cardiovascular diseases were the most numerous (33.9%), followed by metabolic and digestive tract diseases. 6. All surgical treatments of implant insertion were performed under local anesthesia, while monitoring cardiac and respiratory function, and SpO2. Among the 68 patients, 9 underwent operation under intravenous sedation and 2 under nitrous oxide inhalation sedation. All 11 patients had hypertension. The results suggested that identification of preoperative risk factors, precise recognition of general condition, and establishment of control system are important to manage medically compromised patients for dental implant treatment.
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81
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Aizawa S, Sakai-Hachiya A, Ida S, Tachikawa N, Kikuchi Y, Aoki M, Yasuoka A, Oka S. [A two-year follow-up of zidovudine plus lamivudine combined with indinavir in antivival naive HIV-infected patients]. KANSENSHOGAKU ZASSHI. THE JOURNAL OF THE JAPANESE ASSOCIATION FOR INFECTIOUS DISEASES 2000; 74:128-33. [PMID: 10741003 DOI: 10.11150/kansenshogakuzasshi1970.74.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Efficacy of a 3-drug combination (Zidovudine (AZT) + Lamivudine (3TC) + Indinavir (IDV)) has been evaluated in 17 anti-viral naive patients with HIV infection for 24 months. Our genotypic resistance assay was able to analyze more than 80% of the patients whose viral load (VL) was over 3,000 copies/ml. This therapy was continued in 11 patients (65%) for 24 months. Among them, VL was undetectable (VL < 400 copies/ml) in patients at 24 month (47% by intent-to-treat, 72% by on treatment). Of the 11 patients, a 3TC resistance-related mutantion was detected in only one case. The therapy was discontinued in 6 cases. Main reasons of the discontinuation were side effects. However, if the therapy was switched to other combinations when VL was undetectable, VL remained undetectable in 5 cases at 24 month.
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82
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Katano H, Suda T, Morishita Y, Yamamoto K, Hoshino Y, Nakamura K, Tachikawa N, Sata T, Hamaguchi H, Iwamoto A, Mori S. Human herpesvirus 8-associated solid lymphomas that occur in AIDS patients take anaplastic large cell morphology. Mod Pathol 2000; 13:77-85. [PMID: 10658913 DOI: 10.1038/modpathol.3880012] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Human herpesvirus type 8 (HHV-8; Kaposi's sarcoma-associated herpesvirus) is a recently isolated human herpesvirus frequently identified in Kaposi's sarcoma, primary effusion lymphoma, and multicentric Castleman's disease. Here we report three cases of HHV-8-bearing solid lymphomas that occurred in AIDS patients (Cases 1-3). All three patients were homosexual men presenting extranodal masses in the lungs (Case 1) or skin (Cases 2 and 3), together with the presence of Kaposi's sarcoma (Case 1), primary effusion lymphoma (Case 2), or multicentric Castleman's disease (Case 3). These solid lymphomas exhibited anaplastic large cell morphology and expressed CD30, corresponding to the recent diagnostic criteria of anaplastic large cell lymphoma (ALCL). The chromosomal translocation t(2;5)-associated chimeric protein p80NPM/ALK was not observed in any of these cases. HHV-8 was detected in all of these cases by polymerase chain reaction, immunohistochemistry of HHV-8-encoded ORF73 protein, and in situ hybridization of T1.1. Epstein-Barr virus was detected only in Cases 2 and 3 by in situ hybridization. It is interesting that inoculation of a cell line obtained from a primary effusion lymphoma cell in Case 2 to severe combined immunodeficiency mice produced HHV-8-positive and Epstein-Barr virus-negative tumors in inoculated sites. These tumor cells exhibited phenotypes of ALCL that were identical to the subcutaneous tumor cells of this particular patient. These findings clearly show that HHV-8 can associate with solid lymphomas and that it can take anaplastic large cell morphology. Those lymphomas should be distinguished from the classical ALCL as were defined by the revised European-American classification of lymphoid neoplasms even though morphology and a part of immunophenotype mimic that of classical ALCL.
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MESH Headings
- Adult
- Animals
- Castleman Disease/pathology
- Castleman Disease/virology
- DNA, Viral/analysis
- Herpesvirus 4, Human/genetics
- Herpesvirus 4, Human/isolation & purification
- Herpesvirus 8, Human/genetics
- Herpesvirus 8, Human/isolation & purification
- Humans
- Immunocompromised Host
- Immunoenzyme Techniques
- In Situ Hybridization
- Ki-1 Antigen/analysis
- Lung Neoplasms/chemistry
- Lung Neoplasms/pathology
- Lung Neoplasms/virology
- Lymphoma, AIDS-Related/chemistry
- Lymphoma, AIDS-Related/pathology
- Lymphoma, AIDS-Related/virology
- Lymphoma, Large-Cell, Anaplastic/chemistry
- Lymphoma, Large-Cell, Anaplastic/pathology
- Lymphoma, Large-Cell, Anaplastic/virology
- Male
- Mice
- Mice, SCID
- Middle Aged
- Neoplasm Transplantation
- Polymerase Chain Reaction
- Sarcoma, Kaposi/chemistry
- Sarcoma, Kaposi/pathology
- Sarcoma, Kaposi/virology
- Skin Neoplasms/chemistry
- Skin Neoplasms/pathology
- Skin Neoplasms/virology
- Tumor Cells, Cultured
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83
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Morita T, Tachikawa N, Kumamaru T, Nukui A, Ikeda H, Suzuki K, Tokue A. Serum anti-p53 antibodies and p53 protein status in the sera and tumors from bladder cancer patients. Eur Urol 2000; 37:79-84. [PMID: 10671790 DOI: 10.1159/000020104] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
OBJECTIVES The purpose of this study was to evaluate the association between the serum anti-p53 antibodies (Abs) status and the p53 protein status in the sera and tumors as well as clinical or pathological parameters in bladder cancer patients retrospectively. METHODS Serum samples from 100 patients with bladder cancer were assayed for anti-p53 Abs and p53 protein by enzyme-linked immunosorbent assay (ELISA). A monoclonal antibody DO7 was used for immunohistochemical staining of tumor p53 protein. RESULTS Prevalences of serum anti-p53 Abs, serum p53 protein and tumor p53 protein were 12, 1 and 63%, respectively. There was a significant correlation between serum anti-p53 Abs status and factors including tumor stage, tumor grade, and tumor p53 protein status. In the univariate analysis, tumor stage, tumor grade, serum anti-p53 Abs status, and tumor p53 protein status were significantly associated with an increased risk of death. Multivariate analysis showed that tumor stage was the only independent prognostic factor among the factors examined. CONCLUSIONS The present study suggests that serum anti-p53 Abs had a limited value as a tumor marker in bladder cancer patients. Further studies to elucidate the mechanism of anti-p53 Abs production will be necessary for a better understanding of the immune status in bladder cancer patients.
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84
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Yamamoto Y, Yasuoka A, Tachikawa N, Teruya K, Genka I, Yamaguchi M, Yasuoka C, Kikuchi Y, Aoki M, Oka S. Mitigation of hepato-cellular injury caused by HAART with glycyrrhizin compound in patients co-infected with HIV and HCV. Jpn J Infect Dis 1999; 52:248-9. [PMID: 10738365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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85
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Tachikawa N, Yasuoka A, Oka S. Improvement of onychomycosis without antifungal therapy after initiation of highly active anti-retroviral therapy (HAART) in an HIV-infected patient. Jpn J Infect Dis 1999; 52:245-6. [PMID: 10738363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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86
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Gatanaga H, Aizawa S, Kikuchi Y, Tachikawa N, Genka I, Yoshizawa S, Yamamoto Y, Yasuoka A, Oka S. Anti-HIV effect of saquinavir combined with ritonavir is limited by previous long-term therapy with protease inhibitors. AIDS Res Hum Retroviruses 1999; 15:1493-8. [PMID: 10580399 DOI: 10.1089/088922299309775] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Combination therapy of saquinavir (SQV) and ritonavir (RTV) seems to have a strong antiretroviral effect pharmacokinetically. The purpose of this study was to examine the effectiveness of combined therapy using SQV and RTV in patients previously treated with protease inhibitors (PIs) and to identify the factors compromising the response to such combination therapy. Nineteen HIV-infected Japanese patients participated in this trial between June 1997 and July 1998, and were monitored until November 1998. Patients were treated with SQV (400 mg twice daily) and RTV (300 or 400 mg twice daily). Among the 17 patients who continued such therapy for longer than 3 months, 6 were responders. Among nonresponders, the duration of PI therapy was longer and a higher frequency of preexisting PI resistance viral mutations was detected than in responders. No significant differences were found in previous use of reverse transcriptase inhibitor therapy, CD4+ and CD8+ T cell counts, viral load at baseline, and plasma concentrations of SQV and RTV between responders and nonresponders. Our results suggest that the response to SQV combined with RTV therapy is complicated by previous long-term treatment with PIs, probably owing to multiple PI resistance mutations. Even in patients with a PI-sensitive HIV genotype, however, resistance mutations can develop during therapy and abrogate the effect of high plasma SQV concentrations.
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87
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Katano H, Sata T, Suda T, Nakamura T, Tachikawa N, Nishizumi H, Sakurada S, Hayashi Y, Koike M, Iwamoto A, Kurata T, Mori S. Expression and antigenicity of human herpesvirus 8 encoded ORF59 protein in AIDS-associated Kaposi's sarcoma. J Med Virol 1999; 59:346-55. [PMID: 10502268 DOI: 10.1002/(sici)1096-9071(199911)59:3<346::aid-jmv15>3.0.co;2-4] [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: 11/09/2022]
Abstract
Human herpesvirus 8 (HHV-8, Kaposi's sarcoma-associated herpesvirus, KSHV) is a new herpes virus isolated from patients with AIDS-associated Kaposi's sarcoma (AIDS-KS). The ORF59 protein of HHV-8 has recently been shown to encode a processivity factor (PF-8) for HHV-8-encoded DNA polymerase. By immunoscreening a cDNA library derived from the HHV-8-infected cell line TY-1, ORF59 antigen was identified in AIDS-KS patients. Immunoblotting revealed that recombinant ORF59 protein reacted with sera from patients with AIDS-KS. Enzyme-linked immunosorbent assay (ELISA) using ORF59-recombinant protein as the antigen revealed that 7 of 22 (31. 8%) AIDS-KS patients and 6 of 263 (2.2%) Japanese HIV-negative patients or healthy blood donors were positive for anti-ORF59 antibodies. Immunohistochemistry using anti-ORF59 rabbit antibodies revealed that this protein was expressed in some of the tumor cells found in KS tissues and that ORF59 protein was detected in 11 of 22 (50%) AIDS-KS tissues. In situ hybridization indicated that some of KS tumor cells were positive for HHV-8 T1.1 mRNA in the same specimen. These data suggest that ORF59 is one of the HHV-8 encoded antigens in patients with AIDS-KS and also indicated that viral replication occurred in some of KS tumor cells.
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MESH Headings
- AIDS-Related Opportunistic Infections/immunology
- AIDS-Related Opportunistic Infections/pathology
- AIDS-Related Opportunistic Infections/virology
- Animals
- Antibodies, Viral/blood
- Antigens, Viral/biosynthesis
- Antigens, Viral/immunology
- Antigens, Viral/metabolism
- Blotting, Western
- Cell Line
- DNA, Complementary/genetics
- Enzyme-Linked Immunosorbent Assay
- HIV/immunology
- Herpesvirus 8, Human/immunology
- Humans
- Rabbits
- Recombinant Proteins/biosynthesis
- Recombinant Proteins/immunology
- Sarcoma, Kaposi/immunology
- Sarcoma, Kaposi/pathology
- Sarcoma, Kaposi/virology
- Tumor Cells, Cultured
- Viral Proteins/genetics
- Viral Proteins/immunology
- Viral Proteins/metabolism
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88
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Kojima T, Tachikawa N, Yosizawa S, Yasuoka C, Yamamoto Y, Genka I, Teruya K, Kikuchi Y, Aoki M, Yasuoka A, Oka S. Hepatitis A Virus Outbreak; a Possible Indicator of High Risk Sexual Behavior among HIV-1 Infected Homosexual Men. Jpn J Infect Dis 1999. [DOI: 10.7883/yoken.52.173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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89
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Tachikawa N, Yoshizawa S, Kikuchi Y, Yasuoka A, Oka S. Saquinavir Therapy in Patients with the Advanced HIV Infection and Liver Cirrhosis. Jpn J Infect Dis 1999. [DOI: 10.7883/yoken.52.177] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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90
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Kojima T, Tachikawa N, Yosizawa S, Yasuoka C, Yamamoto Y, Genka I, Teruya K, Kikuchi Y, Aoki M, Yasuoka A, Oka S. Hepatitis A virus outbreak; a possible indicator of high risk sexual behavior among HIV-1 infected homosexual men. Jpn J Infect Dis 1999; 52:173-4. [PMID: 10592903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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91
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Tachikawa N, Yoshizawa S, Kikuchi Y, Yasuoka A, Oka S. Saquinavir therapy in patients with the advanced HIV infection and liver cirrhosis. Jpn J Infect Dis 1999; 52:177-8. [PMID: 10592905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
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92
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Tachikawa N, Goto M, Hoshino Y, Gatanaga H, Yasuoka A, Wakabayashi T, Katano H, Kimura S, Oka S, Iwamoto A. Detection of Toxoplasma gondii, Epstein-Barr virus, and JC virus DNAs in the cerebrospinal fluid in acquired immunodeficiency syndrome patients with focal central nervous system complications. Intern Med 1999; 38:556-62. [PMID: 10435361 DOI: 10.2169/internalmedicine.38.556] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECT Toxoplasmic encephalitis (TE), primary central nervous system lymphoma (PCNSL) and progressive multifocal leukoencephalopathy (PML) are major central nervous system (CNS) diseases in patients with acquired immunodeficiency syndrome (AIDS). We assessed the diagnostic value of polymerase chain reaction (PCR) in the detection of DNAs of Toxoplasma gondii (T. gondii), Epstein-Barr virus (EBV) and JC virus (JCV) in the cerebrospinal fluid (CSF). METHODS We compared the PCR results with those of pathological findings at autopsy. PATIENTS OR MATERIALS The present study included 23 autopsies representing those in whom CSF samples were obtained before death while the patient was hospitalized or at autopsy. RESULTS The threshold levels for PCR detection were 4 tachyzoites of T. gondii, 5-15 genomes of EBV and 10 genomes of JCV. We identified T. gondii DNA in 4 out of 5 autopsy-defined cases of TE, EBV DNA in 5 out of 5 cases with PCNSL, and JCV DNA in 2 out of 2 cases with PML. The specificity of PCR was 100% in TE, 78% in PCNSL, and 100% in PML. CONCLUSION Although the number of cases was relatively small in this study, PCR correctly identified T. gondii DNA in those cases in which PML or PCNSL was the sole clinical diagnosis. Our results indicate that PCR examination of CSF is a clinically useful tool for the diagnosis of focal brain lesions in patients with AIDS.
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MESH Headings
- Acquired Immunodeficiency Syndrome/complications
- Animals
- Base Sequence
- Brain Diseases/complications
- Brain Diseases/diagnosis
- DNA Primers/genetics
- DNA, Protozoan/cerebrospinal fluid
- DNA, Protozoan/genetics
- DNA, Viral/cerebrospinal fluid
- DNA, Viral/genetics
- Female
- Herpesvirus 4, Human/genetics
- Herpesvirus 4, Human/isolation & purification
- Humans
- JC Virus/genetics
- JC Virus/isolation & purification
- Leukoencephalopathy, Progressive Multifocal/complications
- Leukoencephalopathy, Progressive Multifocal/diagnosis
- Lymphoma, AIDS-Related/diagnosis
- Male
- Polymerase Chain Reaction/methods
- Toxoplasma/genetics
- Toxoplasma/isolation & purification
- Toxoplasmosis, Cerebral/complications
- Toxoplasmosis, Cerebral/diagnosis
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93
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Tachikawa N. [HHV8 infection (Kaposi's sarcoma)]. RYOIKIBETSU SHOKOGUN SHIRIZU 1999:51-4. [PMID: 10088335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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94
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Shiota M, Kaneko R, Okada T, Taira K, Tachikawa N, Enomoto S. [Clinical retrospective study on outpatients at clinic for oral implant]. KOKUBYO GAKKAI ZASSHI. THE JOURNAL OF THE STOMATOLOGICAL SOCIETY, JAPAN 1999; 66:15-9. [PMID: 10332144 DOI: 10.5357/koubyou.66.15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A retrospective study was made on 1,000 outpatients visiting the Clinic for Oral Implant, University Hospital, Faculty of Dentistry, Tokyo Medical and Dental University between April 1995 and June 1998. The following findings were obtained according to sex, age group, reason for visit, classification of edentulous area, indication and contraindication for implant therapy, and pre-implant surgical treatment. Forty percent of the outpatients were male and 60% were female. The largest number was in the 50-59-year-old group. The reason for visit of 822 patients was request for implant therapy. 123 patients with uncomfortable implants done at other clinics, 12 patients undergoing maintenance of implants at other clinics and 43 other patients. There were 505 upper jaw cases and 529 lower jaw cases. Most anterior edentulous cases were in the upper jaw group. Most of the posterior edentulous cases were unilateral cases and many of them were free-end saddle cases. Indication patients were 447 of the 822 outpatients. The main contraindication was insufficient volume of bone. Two hundred twenty-one of the 477 indication patients did not need the pretreatment which consisted of extraction, bone graft, free gingival graft, provisional prosthetics, sinus lift, and so on.
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95
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Iritani O, Shiota M, Tachikawa N, Enomoto S. [Diagnosis for dental implant using computed tomography and precise implantation using modified stent]. KOKUBYO GAKKAI ZASSHI. THE JOURNAL OF THE STOMATOLOGICAL SOCIETY, JAPAN 1998; 65:380-6. [PMID: 10028814 DOI: 10.5357/koubyou.65.380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The diagnosis of jaw bones using X-ray computerized tomography is effective to decide the method of implantation, the position of the implant, and the direction for the insertion of the implant. However, it is difficult to apply anatomical information to the superstructures of implants, as well as to prepare implant sockets at the proper site by using an ordinary surgical stent. This would affect the effectiveness of the X-ray computerized tomography considerably. The X-ray computerized tomography with a diagnostic stent has been used in our clinic. CT multiplaner reconstruction images with radiopaque markers are useful to examine the adaptability of implant and to determine an appropriate site of implantation for an ideal prosthesis. Moreover, the diagnostic stent is modified to the surgical stent by drilling guide holes to reproduce a precise direction for inserting implant. By applying this stent, it is possible to reproduce the optimal site and direction for the placement of implant. In this report, two cases, which were treated with diagnosis and the placement of implants by using this technique, were studied. One was a case of overdenture and the other was that of upper anterior prostheses. In both cases, precise implantation was achieved by using this technique.
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96
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Ioki K, Barabaschi P, Bruno L, Cardella A, Danner W, Elio F, Hechler M, Kodama T, Lodato A, Loesser D, Lousteau D, Mattas R, Miki N, Mohri K, Parker R, Raffray R, Strebkov Y, Tachikawa N, Takatsu H, Williamson D, Yamada M. ITER first wall/shield blanket. FUSION ENGINEERING AND DESIGN 1998. [DOI: 10.1016/s0920-3796(98)00201-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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97
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Hoshino Y, Nagata Y, Gatanaga H, Hosono O, Morimoto C, Tachikawa N, Nomura K, Wakabayashi T, Oka S, Nakamura T, Iwamoto A. Cytomegalovirus (CMV) retinitis and CMV antigenemia as a clue to impaired adrenocortical function in patients with AIDS. AIDS 1997; 11:1719-24. [PMID: 9386806 DOI: 10.1097/00002030-199714000-00008] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
OBJECTIVE To elucidate the relationship between the activity of CMV disease and adrenocortical function in patients with AIDS. DESIGN AND PATIENTS CMV retinitis and CMV antigenemia assay (CMV-Ag: numbers of polymorphonuclear leukocytes positive for CMV pp65 antigen per 1.5 x 10(5) cells) are the least invasive and easily accessible examinations to assess the CMV disease activity. All HIV-infected patients with CD4+ lymphocyte counts < 50 x 10(6)/l who were admitted to the Research Hospital of the Institute of the Medical Science (University of Tokyo) between May 1995 to April 1996 were included in this study. METHODS Fundoscopic examination on CMV retinitis and CMV-Ag were chosen as methods to assess CMV activity because of their simplicity. Adrenocortical function was evaluated by basal plasma adrenocorticotropin, plasma cortisol, plasma aldosterone, plasma renin activity, and responses of plasma cortisol and plasma aldosterone to 250 micrograms intravenous cosyntropin [rapid adrenocorticotropin test (RAT)]. RESULTS Thirty patients were enrolled in this study with a maximum CD4+ lymphocyte count of 32 x 10(6)/l. Eleven out of 30 patients showed impaired RAT response (37%). Fourteen out of 30 patients had CMV retinitis. A significant correlation was found between the presence of CMV retinitis and subnormal cortisol response (P < 0.005). Sixteen out of the 30 patients were CMV-Ag-positive. A significant correlation was found between CMV-Ag positivity and subnormal cortisol response to RAT (P < 0.005). CMV-Ag levels in the patients with subnormal cortisol response to RAT were significantly higher than those with normal response (P < 0.001). Importantly, five patients with subnormal cortisol response but not overt adrenal insufficiency at the time of RAT developed overt disease shortly afterwards. Autopsy was performed in six patients with subnormal cortisol response and showed multiple inclusion bodies indicative of CMV adrenitis. CONCLUSION The adrenal gland is most frequently affected by CMV in AIDS patients. Our result suggests that CMV retinitis or CMV-Ag positivity independently serve as an indication of possible adrenal dysfunction.
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98
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Matsushima T, Nakamura K, Oka T, Tachikawa N, Sata T, Murayama S, Nukina N, Kanazawa I. Unusual MRI and pathologic findings of progressive multifocal leukoencephalopathy complicating adult Wiskott-Aldrich syndrome. Neurology 1997; 48:279-82. [PMID: 9008537 DOI: 10.1212/wnl.48.1.279] [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: 02/03/2023] Open
Abstract
We present a long-surviving patient with Wiskott-Aldrich syndrome complicated by atypical progressive multifocal leukoencephalopathy (PML). MRI showed multiple tiny spots of Gd-DTPA-enhanced lesions on the T1-weighted image. Pathologic findings for brain biopsy were patchy demyelinated vascularized lesions infiltrated by a surprising number of eosinophils. The presence of polyomavirus JC was confirmed by in situ hybridization and polymerase chain reaction. PML should be included in the differential diagnosis when Gd-DTPA-enhanced spotty lesions are present in the white matter, especially in patients who have a mild immunologic defect.
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Mori M, Hoshino S, Masaka K, Tachikawa N, Enomoto S, Takahashi K. Application of rhBMP-2 in mandibular bone reconstruction after segmental resection. Int J Oral Maxillofac Surg 1997. [DOI: 10.1016/s0901-5027(97)81085-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Asahina I, Sakakibara T, Miyashin M, Tachikawa N, Enomoto S. Congenital midline sinus of the upper lip: case report and review of literature. Cleft Palate Craniofac J 1997; 34:83-5. [PMID: 9003918 DOI: 10.1597/1545-1569_1997_034_0083_cmsotu_2.3.co_2] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
A case report of a congenital midline sinus of the upper lip in a 5-year-old girl is presented. The patient complained of intermittent swelling around the frenulum of the upper lip. The sinus was located on the midline of the philtrum just below the base of the columella. Excision of the sinus tract via an intraoral approach gave a satisfactory result. Microscopic examination of the resected sinus revealed it to be lined by stratified squamous epithelium with sebaceous glands and hair follicles. Fifteen other cases have been reported in the English literature and are reviewed. There are two postulates that can account for the formation of the upper lip sinus based on two major theories of the development of the face: the fusion theory and the merging theory. However, the etiology of this rare congenital sinus remains obscure.
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