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Kamada H, Asobe M, Honjo T, Takesue H, Tokura Y, Nishida Y, Tadanaga O, Miyazawa H. Efficient and low-noise single-photon detection in 1550 nm communication band by frequency upconversion in periodically poled LiNbO3 waveguides. OPTICS LETTERS 2008; 33:639-641. [PMID: 18382502 DOI: 10.1364/ol.33.000639] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
We demonstrate 1500 nm band single-photon detection with low dark-count noise and a potentially high efficiency, which may allow long distance and high-bit-rate quantum key distribution. By developing frequency upconversion devices based on periodically poled lithium niobate waveguides, which are specifically designed to use a pump wavelength longer than that of communication-band photons, we completely eliminate the dark-count noise caused by parasitic nonlinear processes in the waveguide. We observed an internal conversion efficiency as high as 40% and demonstrated scaling down to the single photon level while maintaining a background dark-count rate of 10(2)s(-1).
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Iseki K, Maki S, Miyazawa H, Suzuki A, Nagano T, Niki T, Goto K, Kawamae K, Tase C. 126: Chest Compression Should Be Changed Every 1 Minute for Female Rescuers Under In-Hospital ACLS Conditions. Ann Emerg Med 2008. [DOI: 10.1016/j.annemergmed.2008.01.094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kakimoto K, Liu L, Miyazawa H, Nakano S, Kashiwagi D, Chen XJ, Kangawa Y. Numerical investigation of crystal growth process of bulk Si and nitrides – a review. CRYSTAL RESEARCH AND TECHNOLOGY 2007. [DOI: 10.1002/crat.200711004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kurita H, Uehara S, Zhao C, Zhiyong Z, Miyazawa H, Koike T, Kurashina K. Baseline clinical and radiographic features are associated with long-term (8 years) signs/symptoms for subjects with diseased temporomandibular joint. Dentomaxillofac Radiol 2007; 36:155-9. [PMID: 17463100 DOI: 10.1259/dmfr/46387630] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES The purpose of this study was to determine the extent to which baseline clinical and radiographic features were associated with long-term outcomes in patients with temporomandibular joint disorder (TMJD). METHODS 49 patients with unilateral radiographically proven TMJD were available in this study. Self-reported long-term (mean 96.2 months) outcomes (current joint pain, maximum mouth opening and joint noise) after TMJD treatments were assessed by questionnaire. The impact of multiple initial clinical/radiographic findings (gender, age at first visit, time interval between first visit and questionnaire survey, treatment method, disc displacement, disc morphology, disc mobility, condylar bony change and morphology of the articular eminence) on the long-term outcomes was assessed using stepwise multiple regression and logistic regression analysis. RESULTS Patient age at the first visit was significantly correlated with current joint pain. Disc mobility and morphology of the articular eminence were significantly correlated with current range of maximal mouth opening. CONCLUSIONS The results of this study suggest that patients who appeared symptomatic at a younger age or who initially had a fixed disc were the most likely to have recurrent or persisting clinical signs/symptoms of TMJD after 8 years.
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Miyazawa H, Minemura T, Ito N, Narikawa J, Kurashina K. Primary oral KIT-positive tumour consistent with gastrointestinal stromal tumour. Int J Oral Maxillofac Surg 2007; 36:658-60. [PMID: 17339100 DOI: 10.1016/j.ijom.2007.01.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2005] [Revised: 12/29/2006] [Accepted: 01/10/2007] [Indexed: 11/20/2022]
Abstract
Gastrointestinal stromal tumours are characteristically positive for KIT (reflective of the c-KIT gene). A case is reported of an apparent rapidly growing gastrointestinal stromal tumour, which arose in the floor of the mouth and metastasized to the left neck without evidence of disease elsewhere.
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Sakai H, Minemura T, Ito N, Miyazawa H, Kurashina K. Isolated osteochondroma near the mandibular angle. Int J Oral Maxillofac Surg 2007; 36:274-5. [PMID: 17052896 DOI: 10.1016/j.ijom.2006.08.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2006] [Accepted: 08/13/2006] [Indexed: 11/25/2022]
Abstract
A benign tumour of osseous and cartilaginous origins, osteochondroma generally develops in osseous tissue and is frequently found near the end of long bones. It is relatively rare in the oral and maxillofacial region but is common in the mandibular condyle and coronoid process in the pediculate form. This is a report on a rare case of osteochondroma in soft tissue near the mandibular angle without pedicle to the bone.
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Sutani A, Nagai Y, Udagawa K, Uchida Y, Koyama N, Murayama Y, Tanaka T, Miyazawa H, Nagata M, Kanazawa M, Hagiwara K, Kobayashi K. Gefitinib for non-small-cell lung cancer patients with epidermal growth factor receptor gene mutations screened by peptide nucleic acid-locked nucleic acid PCR clamp. Br J Cancer 2006; 95:1483-9. [PMID: 17106442 PMCID: PMC2360739 DOI: 10.1038/sj.bjc.6603466] [Citation(s) in RCA: 147] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
This study was prospectively designed to evaluate a phase II study of gefitinib for non-small-cell lung cancer (NSCLC) patients with epidermal growth factor receptor (EGFR) mutations. Clinical samples were tested for EGFR mutations by peptide nucleic acid-locked nucleic acid PCR clamp, and patients having EGFR mutations were given gefitinib 250 mg daily as the second treatment after chemotherapy. Poor PS patients omitted chemotherapy. Of 107 consecutive patients enrolled, samples from 100 patients were informative, and EGFR mutations were observed in 38 patients. Gefitinib was given to 27 patients with EGFR mutations, and the response rate was 78% (one complete response and 20 partial responses; 95% confidence interval: 58–93%). Median time to progression and median survival time (MST) from gefitinib treatment were 9.4 and 15.4 months, respectively. Grade 3 hepatic toxicity and skin toxicity were observed in one patient each. There were significant differences between EGFR mutations and wild-type patients in response rates (78 vs 14%, P=0.0017), and MST (15.4 vs 11.1 months, P=0.0135). A Cox proportional hazards model indicated that negative EGFR mutation was a secondary prognostic factor (hazards ratio: 2.259, P=0.036). This research showed the need for screening for EGFR mutations in NSCLC patients.
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Sutani A, Nagai Y, Udagawa K, Uchida Y, Murayama Y, Tanaka T, Miyazawa H, Kanazawa M, Hagiwara K, Kobayashi K. Phase II study of gefitinib for non-small cell lung cancer (NSCLC) patients with epidermal growth factor receptor (EGFR) gene mutations detected by PNA-LNA PCR clamp. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.7076] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
7076 Background: The responsiveness to gefitinib has been reported to closely link to the presence of EGFR gene mutations. We developed a method, PNA-LNA PCR clamp, capable of detecting EGFR mutations in the presence of 100-fold background of wild type EGFR from normal cells (Can Res. 2005;65:7276). This study was prospectively designed to evaluate 1) the sensitivity and the specificity of the PNA-LNA PCR clamp (sample size > 100 pts) and 2) a phase II study of gefitinib for NSCLC patients (pts) with EGFR gene mutations (sample size > 25 pts to show the lower limit of 95% CI > 50%). Methods: Clinical samples (sputum, pleural effusion, bronchial fluid and paraffin tissue) were obtained from consecutive NSCLC pts with informed consent in our institution, and were tested by the PNA-LNA PCR clamp. After the second informed consent, for PS 0–2, inoperable stage III and IV pts with EGFR mutations, gefitinib (250mg P.O. daily) was given as the second treatment after docetaxel containing chemotherapy. In case of poor PS pts, the first line chemotherapy was omitted. Results: From Sept. ’04 to Oct. ’05, samples from 100 of a total of 107 pts were informative of EGFR mutation status. PNA-LNA PCR clamp detected EGFR mutations in 38 pts (38%) (15 males/23 females; median age:62; adenoca.:33 pts). Exon 19 deletions, L858R and L861Q were found in 25 (66%), 12 (32%) and 1 (2%) patients, respectively. But 62 pts (51 males/11 females; median age:66; Ad:43 pts) were judged to have wild type EGFR. Between positive and negative pts in EGFR mutation, there was significant difference in the distinction of sex (p = 0.00001). Gefitinib was given to 26 pts with EGFR mutations as the first line (4 pts) or the second line treatment (22 pts). One patient and 20 patients showed CR and PRs, respectively, and the response rate was 81% (95% CI: 61–94%). For patients with wild EGFR genes, gefitinib was given to 5 patients and one patient (20%) showed PR. The response rate was significantly different between wild and mutant EGFR genes detected by the PNA-LNA PCR clamp (p = 0.017). Conclusions: PNA-LNA PCR clamp could reliably detect EGFR mutations, indicating the method is useful to detect EGFR mutations in clinical specimens. Updated data will be presented at the meeting. No significant financial relationships to disclose.
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Nakashima I, Fujihara K, Miyazawa H, Misu T, Fujimori J, Sato S, Itoyama Y. Relevance of callosal and periventricular MRI lesions to oligoclonal bands in multiple sclerosis. Acta Neurol Scand 2006; 113:125-31. [PMID: 16411974 DOI: 10.1111/j.1600-0404.2005.00552.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To evaluate the association between callosal or periventricular lesions, and the presence of oligoclonal IgG bands (OB) or the IgG index in Japanese patients with multiple sclerosis (MS). MATERIALS AND METHODS Brain magnetic resonance imaging (MRI) was studied in 34 Japanese clinically definite MS cases. Sagittal 2-mm fast fluid-attenuated inversion-recovery (FLAIR) imaging was added to the routine MRI studies. RESULTS Among the 34 patients, 20 (59%) were OB positive. Among the 20 patients with OB-positive MS, 17 (85%) had callosal lesions, although only two (14%) of 14 OB-negative MS patients had callosal lesions. The periventricular lesion area was significantly larger in the OB-positive patients compared with the OB-negative patients. CONCLUSIONS The present study clearly demonstrated a strong association between the periventricular lesions and OB in Japanese MS. Certain OB-related immune mechanisms may contribute to the development of callosal and periventricular lesions in MS. OB may be an important factor to understand the pathomechanisms of MS lesions.
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Udagawa K, Nagai Y, Akaishi T, Miyazawa H, Yokote A, Kanazawa M, Hagiwara K, Shimizu M, Kaneko K, Kobayashi K. Clinical evaluation of a rapid and sensitive detection system for epidermal growth factor receptor (EGFR) mutations named PNA-LNA PCR clamp. J Clin Oncol 2005. [DOI: 10.1200/jco.2005.23.16_suppl.3072] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Maruyama K, Sakai H, Miyazawa H, Toda N, Iinuma Y, Mochizuki N, Hara K, Otagiri T. Sore throat and hoarseness after total intravenous anaesthesia. Br J Anaesth 2004; 92:541-3. [PMID: 14766717 DOI: 10.1093/bja/aeh098] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Sore throat and hoarseness are common complications, but these have not been studied after total i.v. anaesthesia. METHODS We prospectively studied 418 surgical patients, aged 15-92 yr, after total i.v. anaesthesia with propofol, fentanyl and ketamine to assess possible factors associated with sore throat and hoarseness. RESULT We found sore throat in 50% and hoarseness in 55% of patients immediately after surgery. This decreased to 25% for sore throat and 24% for hoarseness on the day after surgery. Both sore throat and hoarseness were more common in females and when lidocaine spray had been used. Cricoid pressure during laryngoscopy was inversely associated with the risk of sore throat. CONCLUSION Knowledge of these factors may reduce postoperative throat complications, and improve patient satisfaction.
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Ohyashiki K, Kuriyama Y, Nakajima A, Tauchi T, Ito Y, Miyazawa H, Kimura Y, Serizawa H, Ebihara Y. Imatinib mesylate-induced hepato-toxicity in chronic myeloid leukemia demonstrated focal necrosis resembling acute viral hepatitis. Leukemia 2002; 16:2160-1. [PMID: 12357373 DOI: 10.1038/sj.leu.2402702] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2002] [Accepted: 06/19/2002] [Indexed: 12/16/2022]
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Miyazawa H, Furuya T, Iida M, Kotanagi H, Koyama K. Graft immunomodulation by donor irradiation and recipient-specific bone marrow cells in rat small bowel transplantation. Transplant Proc 2002; 34:1349-54. [PMID: 12072357 DOI: 10.1016/s0041-1345(02)02798-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Moriya O, Matsui M, Osorio M, Miyazawa H, Rice CM, Feinstone SM, Leppla SH, Keith JM, Akatsuka T. Induction of hepatitis C virus-specific cytotoxic T lymphocytes in mice by immunization with dendritic cells treated with an anthrax toxin fusion protein. Vaccine 2001; 20:789-96. [PMID: 11738742 DOI: 10.1016/s0264-410x(01)00407-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
As a novel and safe vaccine strategy, the anthrax toxin-mediated antigen delivery system composed of lethal factor (LF) fusion protein and protective antigen (PA) has been studied to prime hepatitis C virus (HCV) core-specific cytotoxic T lymphocytes (CTLs) in vivo. The core epitope fused to LF (LF-core) together with PA induces a negligible core-specific CTL response in mice, whereas core-specific CTL are effectively primed in mice by injecting dendritic cells (DCs) treated in vitro with LF-core and PA. These findings imply that LF fusion protein plus PA in combination with dendritic cells may be useful for a novel T cell vaccine against HCV infection.
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Nishie W, Iitoyo M, Miyazawa H. Follicular cyst in a patient with myotonic dystrophy: a case of cyst with differentiation toward follicular infundibulum, isthmus, inner root sheath, and hair. Am J Dermatopathol 2001; 23:521-4. [PMID: 11801793 DOI: 10.1097/00000372-200112000-00004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We report a case of follicular cyst, which developed in a patient with myotonic dystrophy (MyD). Histopathologically, the cyst showed infundibular and trichilemmal keratinization, inner root sheath differentiation, aggregation of basaloid cells, and pilomatricoma-like changes in the pericystic connective tissue. These findings have been reported in follicular cysts with Gardner's syndrome (GS). Interestingly, pilomatricoma is known as one of the skin diseases associated with MyD, though there have been no reported cases of cyst formation with differentiation toward portions of hair follicle in a MyD patient. In our case, we hypothesized that the cyst might be derived from embryonic follicular germinative cells or follicular stem cells under the genetic influence of the MyD gene, as observed in follicular cysts in patients with GS.
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Mori N, Fujino T, Uchida H, Miyazawa H, Minoura S, Kawana A, Kawahata H, Gotoh M, Yonamine T, Yamanishi F, Kuratsuji T, Kudo K, Kobori O, Yazaki Y, Kirikae T. Molecular epidemiology of methicillin-resistant Staphylococcus aureus infections in a newborn nursery, a neonatal intensive care unit, and a general pediatrics ward. Jpn J Infect Dis 2001; 54:189-90. [PMID: 11754157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Sakaguchi M, Miyazawa H, Inouye S. Specific IgE and IgG to gelatin in children with systemic cutaneous reactions to Japanese encephalitis vaccines. Allergy 2001; 56:536-9. [PMID: 11421899 DOI: 10.1034/j.1398-9995.2001.056006536.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Systemic allergic reactions to Japanese encephalitis (JE) vaccine that include urticaria, angioedema, and rash have been reported. In Japan, children who suffered from allergic immediate-type reactions to JE vaccine had antigelatin IgE in their sera. However, the immunologic mechanism of allergic nonimmediate-type reactions that consist of cutaneous signs appearing several hours or more after JE vaccination has not been defined. METHODS Serum samples were taken from 28 children who showed allergic nonimmediate-type cutaneous reactions to JE vaccine. Furthermore, serum samples were taken from 10 children who showed allergic immediate-type reactions with cutaneous signs and/or respiratory symptoms to JE vaccine. We have defined an immediate-type reaction as one occurring within 1 h after vaccination. RESULTS Of 10 children who showed immediate-type reactions, all had antigelatin IgE and IgG. Of 28 children who showed systemic nonimmediate-type reactions, one had antigelatin IgE and nine (32%) had antigelatin IgG. The child who had antigelatin IgE showed urticaria 2 h after JE vaccination. CONCLUSION These results suggest that some children who showed allergic nonimmediate-type reactions to JE vaccine were sensitized to gelatin.
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Oh KB, Miyazawa H, Naito T, Matsuoka H. Purification and characterization of an autoregulatory substance capable of regulating the morphological transition in Candida albicans. Proc Natl Acad Sci U S A 2001; 98:4664-8. [PMID: 11274356 PMCID: PMC31891 DOI: 10.1073/pnas.071404698] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2000] [Indexed: 12/29/2022] Open
Abstract
The yeast Candida albicans has a distinguishing feature, dimorphism, which is the ability to switch between two morphological forms: a budding yeast form and a multicellular invasive filamentous form. This ability has been postulated to contribute to the virulence of this organism. Studies on the morphological transition from a filamentous to a budding yeast form in C. albicans have shown that this organism excretes an autoregulatory substance into the culture medium. This substance was extracted and purified by normal-phase and reversed-phase HPLC. The autoregulatory substance was structurally identified as 3,7,11-trimethyl-2,6,10-dodecatrienoate (farnesoic acid) by NMR and mass spectrometry. Growth experiments suggest that this substance does not inhibit yeast cell growth but inhibits filamentous growth. These findings have implications for developmental signaling by the fungus and might have medicinal value in the development of antifungal therapies.
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Toyooka K, Miyazawa H, Naiki Y, Ishii Y, Nishiyama F, Kuratsuji T, Kirikae T. Air quality monitoring in a neonatal intensive care unit. Jpn J Infect Dis 2001; 54:87-8. [PMID: 11427754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Sakaguchi M, Yamada T, Hirahara K, Shiraishi A, Saito S, Miyazawa H, Taniguchi Y, Inouye S, Nigi H. Seasonal changes of humoral and cellular immune responses to Japanese cedar (Cryptomeria japonica) pollen allergens in Japanese monkeys (Macaca fuscata) with pollinosis. J Med Primatol 2001; 30:112-20. [PMID: 11491404 DOI: 10.1034/j.1600-0684.2001.300207.x] [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: 11/23/2022]
Abstract
The natural occurrence of Japanese cedar [Cryptomeria japonica (CJ)] pollinosis has been reported in Japanese monkeys (Macaca fuscata). The present study was designed to investigate seasonal changes in immunological reactions to CJ pollen allergens in monkeys with CJ pollinosis. Blood samples were collected from six monkeys with CJ pollinosis before and after CJ pollen season. Seasonal changes in specific IgE and IgG to major allergens (Cry j 1 and Cry j 2) were observed before and after CJ pollen season. The humoral responses decreased significantly before CJ pollen and increased after CJ pollen season. Similar seasonal changes in peripheral blood mononuclear cells proliferative responses to CJ allergens were observed before and after CJ pollen season. These humoral and cellular immune responses might serve as a biomarker for assessing new immunotherapies for monkeys with pollinosis.
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Nishikawa N, Izumi M, Yokoi M, Miyazawa H, Hanaoka F. E2F regulates growth-dependent transcription of genes encoding both catalytic and regulatory subunits of mouse primase. Genes Cells 2001; 6:57-70. [PMID: 11168597 DOI: 10.1046/j.1365-2443.2001.00395.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
DNA polymerase alpha-primase is one of the principal enzymes involved in eukaryotic chromosomal DNA replication. Mouse DNA polymerase alpha-primase consists of four subunits with molecular masses of 180, 68, 54 and 46 kDa. Protein and mRNA expression levels of the four subunits are up-regulated in a coordinated manner in response to growth stimulation. We have previously analysed the transcription of the 180 kDa (p180) and 68 kDa (p68) subunits, which form the DNA polymerase catalytic complex, and found that growth-dependent regulation of transcription of the mouse p180 and p68 genes is mediated by a common factor, E2F, while the basal transcription of the genes is regulated by different transcription factors. We characterized the transcriptional regulation of the 54 kDa (p54) and 46 kDa (p46) subunits, which form the DNA primase catalytic complex. We isolated genomic clones spanning the 5'-flanking regions of the p54 and p46 genes and showed, using transient expression and gel mobility shift assays, that the basal transcription of p54 is controlled by Sp1 and GA-binding protein, as is the basal transcription of the p180 gene. The basal transcription of p46 is controlled by unknown factor(s) which were bound to the upstream sequence. The variant E2F sites close to the transcription initiation sites of the p54 and p46 genes had no basal promoter activity, but were essential for the growth-dependent transcription of both genes. The promoter regions of the four subunits of mouse DNA polymerase d-primase complex share several common features. The coordinated transcription of all four subunits in response to growth stimulation appears to be controlled by E2F.
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Tsuboi H, Miyazawa H, Wenner M, Iimori H, Kawamura N. Lesions in lateral hypothalamic areas increase splenocyte apoptosis. Neuroimmunomodulation 2001; 9:1-5. [PMID: 11435746 DOI: 10.1159/000049001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The lateral hypothalamic area (LHa) is involved in various functions such as feeding, drinking, sexual and reward behavior, among others. Recently, we demonstrated that the LHa can regulate cellular immunity in the spleen. In experiments involving the LHa, it was noticed that the spleen shrinks noticeably after LHa destruction. To explore this phenomenon further, the effect of LHa lesioning on splenocyte apoptosis was investigated. METHODS Male Wistar-King-Aptekman rats underwent bilateral lesioning of their LHa and consequent spleen weights, splenocyte numbers and apoptosis were measured. For the detection of splenocyte apoptosis, both ELISA, which measures DNA fragmentation within the splenocytes, and flow cytometry, which measures the percentage of apoptotic lymphocytes in the spleen, were used. RESULTS In the LHa-lesioned rats, spleen weights and the number of splenocytes decreased significantly within 24 h. Additionally, in the spleen, lymphocyte apoptosis significantly increased compared to the control after 6 h. CONCLUSION These results suggest that the LHa may play a role in immunoregulation by affecting lymphocytes in the spleen through apoptosis and may be relevant to the pathway of stress-induced apoptosis.
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Araki K, Noguchi Y, Hirouchi T, Yoshikawa E, Kataoka S, Silverni L, Miyazawa H, Kuzuhara H, Suzuki C, Shimada Y, Hamasato S, Maeda N, Shimamura Y, Ogawa Y, Ohtsuki Y, Fujimoto S. Cancer regression induced by modified CTL therapy is regulated by HLA class II and class I antigens in Japanese patients with advanced cancer. Int J Oncol 2000; 17:1107-18. [PMID: 11078795 DOI: 10.3892/ijo.17.6.1107] [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: 11/05/2022] Open
Abstract
Autologous cancer-specific bulk CTLs are unlikely to be induced by in vitro CTL generation (ivtCTLG) using peripheral blood mononuclear cells (PBMCs) of cancer patients when autologous cancer cells are used as in vitro stimulators. However, autologous cancer-specific bulk CTLs are frequently activated when allogeneic cancer cells are used as in vitro stimulators, regardless of the type of cancer cell. We have developed a cancer-specific immunotherapy called modified CTL therapy, which involves adoptive immunotherapy of autologous cancer-specific bulk CTLs after active immunization of autologous or allogeneic cancer cells screened as in vitro stimulators according to their ability to induce autologous cancer-specific CTLs (ACS. CTLs). Cancer did not regress in patients in whom ACS.CTLs were not induced by ivtCTLG using the patients' PBMCs in therapy. Cancer regression, albeit temporary, occurred solely in patients under the immunological condition that ACS.CTLs were induced by ivtCTLG using PBMCs through the therapy. The induction of ACS.CTLs by ivtCTLG using patient PBMCs in therapy was related to patients' HLA class II antigens. HLA DR8 was seen more frequently in ACS.CTL-inducible patients than in ACS.CTL-uninducible patients (P=0.051). On the contrary, HLA DQ3 was seen more frequently in ACS.CTL-uninducible patients (P=0.055). On the other hand, the success in therapy, albeit temporary, was related mainly to patients' HLA class I antigens. HLA B61 was seen more frequently in patients whose therapy proved effective than in patients whose therapy proved ineffective (P=0.018). HLA Cw7 was seen more frequently in therapy-ineffective patients (P=0.040).
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Yamanaka H, Yamanaka J, Okazaki K, Hayakawa E, Miyazawa H, Kuratsuji T, Genka I, Yasuoka A, Oka S. Cytomegalovirus infection of newborns infected with HIV-1 from mother: case report. Jpn J Infect Dis 2000; 53:215-6. [PMID: 11135711] [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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Sakaguchi M, Toda M, Ebihara T, Irie S, Hori H, Imai A, Yanagida M, Miyazawa H, Ohsuna H, Ikezawa Z, Inouye S. IgE antibody to fish gelatin (type I collagen) in patients with fish allergy. J Allergy Clin Immunol 2000; 106:579-84. [PMID: 10984381 DOI: 10.1067/mai.2000.108499] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Most children with anaphylaxis to measles, mumps, and rubella vaccines had shown sensitivity to bovine gelatin that was included in the vaccines. Recently, it was found that bovine type I collagen, which is the main content in the gelatin, is a major allergen in bovine gelatin allergy. Fish meat and skin also contain type I collagen. OBJECTIVE The present study was designed to investigate IgE antibody to fish gelatin in children with fish allergy. METHODS Serum samples were taken from patients in 3 groups: (1) 10 patients with fish allergy and specific IgE to fish meat; (2) two patients with allergies to both fish meat and bovine gelatin and specific IgE to fish meat and bovine gelatin; and (3) 15 patients with atopic dermatitis and specific IgE to fish meat. Various fish gelatins (type I collagen) were prepared from fish skin. IgE antibody to fish gelatin was analyzed by using ELISA and immunoblotting. RESULTS Of 10 patients with fish allergy, 3 had specific IgE to fish gelatin. Of two patients with fish allergy and bovine gelatin allergy, all had specific IgE to fish gelatin. Of 15 patients with atopic dermatitis and specific IgE to fish meat, 5 had specific IgE to fish gelatin. Furthermore, IgE from pooled serum of the patients reacted with both the alpha1 and alpha2 chains of fish type I collagen in immunoblots. There is cross-reactivity among gelatins from various fishes, but there is little cross-reactivity between fish and bovine gelatins. CONCLUSION Some fish-sensitive patients possessed IgE antibody to fish gelatin. Fish gelatin (type I collagen) might be an allergen in subjects with fish allergy.
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