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Suzuki T, Hishida T, Yano K, Imoto T, Oka N, Maeda C, Okubo Y, Masai K, Kaseda K, Asakura K, Emoto K, Asamura H. EP07.03-007 Clinicopathological Analyses for Predicting Recurrence After Complete Resection of Thymoma. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Kyono K, Hattori H, Nakamura Y, Okuyama N, Oka N, Fukuoka Y, Aono N, Tai T, Hashimoto T. P-027 which is the best method of testicular sperm retrieval for NOA? an answer from 1071 TESE cases in my clinics over 25 years. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Study question
Which improves sperm recovery rate (SRR) for men with non-obstructive azoospermia (NOA), microdissection TESE (m-TESE) or conventional TESE (c-TESE)?
Summary answer
SRR of c-TESE vs. m-TESE for NOA was not significant. We need to develop a safer, less-invasive technique with fewer complications and higher SRR.
What is known already
m-TESE has been performed for men with NOA since Schlegel P’s report (Hum Reprod, 1999). Seminiferous tubules containing many developing germ cells were likely to be larger and more opaque and the ability to find spermatozoa increased from 45% (10/22) to 63% (17/27) after introduction of the microdissection technique. However, Jarvis S et al. (Turek PG group, 2019) reported that at least one site revealed mature sperm in 24 (29.3%) of 82 men with prior failed micro TESE procedures, and sperm were more likely to be found in the testis periphery rather than centrally with FNA mapping.
Study design, size, duration
TESE was performed in 1071 azoospermic patients in my clinics; c-TESE was performed for all azoospermic patients between 1996 and 2005 in Sendai; c-TESE for OA and m-TESE for NOA was performed from 2006 in Sendai, and from 2012 in Takanawa. The patients were divided into four groups; 1) FSH≦9.2mIU/ml, Testicular volume(TV)≧15/ml (OA), 2) FSH≦9.2mIU/ml, TV < 15ml, 3) FSH>9.2mIU/ml, TV≧15ml, 4) FSH>9.2mIU/ml, TV < 15ml (NOA).
Participants/materials, setting, methods
c-TESE was performed in 178 azoospermic men (50, 12, 7, 109, respectively) in 1996-2005. c-TESE was performed in 181 patients (131, 26, 15, 9, respectively) and m-TESE was performed in 541 patients (56, 33, 35, 416, respectively) in 2006 -2020. SRR, pregnancy rate (PR), and birth rate (BR) in 1996-2005 were compared with those in 2006-2020.
Main results and the role of chance
Statistical analysis was performed by chi-square analysis. SRR in c-TESE was 96.0% (48/50) in group 1 (OA) vs. 36.7% (40/109) in group 4 (NOA) in Sendai between 1996 and 2005 (P < 0.001).
SRR of c-TESE was 36.7% (40/109) in group 4 (NOA, in Sendai, 1996-2006), whereas SRR of m-TESE was 31.3% (130/416) in group 4 (NOA, in Sendai and Takanawa, 2006-2020). There was no significant difference (np).
Total SRR of conventional TESE for all azoospermic patients between 1996 and 2005 was 54.9% (96/175), whereas total SRR of c-TESE for OA and m-TESE for NOA between 2006 and 2020 was 51.7% (373/721). NOA rate 4) of azoospermic patients of 1996-2005 and that of 2006-2020 was 61.2% (109/178) and 58.9% (425/721), respectively. There was no significant difference (np).
PR was 37.4% (61/163) and BR was 31.9% (52/263) in c-TESE (1996-2005), PR was 39.6% (388/980), and BR was 27.6% (270//980) in both c-TESE and m-TESE (2006–2020). There was a significant difference in birth rate (P < 0.05).
In conclusion, SRR, PR, and BR were not improved even after m-TESE was performed. Considering the fact that m-TESE cannot find sperm thoroughly, adopting other techniques such as sperm fine-needle aspiration may be required.
Limitations, reasons for caution
Not applicable.
Wider implications of the findings
We could not show the effectiveness of m-TESE compared with c-TESE. However, the total volume of seminiferous tubules collected by c-TESE was the higher. The new one-step fine-needle aspiration has the potential to achieve higher sperm yield with fewer complications. Further advanced technology will hopefully improve the SRR in NOA.
Trial registration number
none
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Affiliation(s)
- K Kyono
- Kyono ART Clinic Takanawa , Gynecology, Tokyo, Japan
- Kyono ART Clinic Sendai , Gynecology, Sendai, Japan
| | - H Hattori
- Kyono ART Clinic Sendai, ART Lab , Sendai, Japan
| | - Y Nakamura
- Kyono ART Clinic Sendai, ART Lab , Sendai, Japan
| | - N Okuyama
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - N Oka
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - Y Fukuoka
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - N Aono
- Kyono ART Clinic Sendai, ART Lab , Sendai, Japan
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - T Tai
- Kyono ART Clinic Takanawa , Gynecology, Tokyo, Japan
- Kyono ART Clinic Sendai , Gynecology, Sendai, Japan
| | - T Hashimoto
- Kyono ART Clinic Takanawa , Gynecology, Tokyo, Japan
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Okuyama N, Oka N, Aono N, Tsunoda M, Ishii M, Fukuoka Y, Koizumi A, Yoshinaga K, Hashimoto T, Kyono K. P-441 a study in status of use and live birth rates of cryopreserved oocyte for social reasons. Hum Reprod 2022. [DOI: 10.1093/humrep/deac107.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Study question
What is status of use and live birth rates of cryopreservation oocyte for social reasons?
Summary answer
11.2% of the cryopreserved oocytes were warmed and transferred, and the oldest of the successful live birth was 39 years old.
What is known already
More people nowadays tend to delay marriage and childbearing due to the social circumstances. It is now gradually known that the pregnancy rate decreases with increasing age, since the donation of gametes from third parties is regulated by the Japanese society, oocyte cryopreservation for social reasons has been becoming common practice. However, not much is known about the subsequent pregnancy and childbirth. Therefore, we conducted a survey on the use and clinical outcomes of cryopreserved oocytes for social reasons in our clinic.
Study design, size, duration
This retrospective single-center study was conducted with a total of 285 women, 424 cycles from March 2014 to December 2019. A total of 2696 oocytes were cryopreserved by vitrification. Written informed consent was obtained from all women who participated in this study.
Participants/materials, setting, methods
Ovarian stimulation was performed mainly with GnRH antagonist protocol. An injection of 5000IU of HCG was administered when the diameter of dominant follicle reached 18mm. All oocytes were denuded enzymatically with 80 IU/ml hyaluronidase, followed by mechanical denudation. The oocytes were then evaluated at metaphase II by confirming the presence of the first polar body. Mature oocytes were cryopreserved by vitrification. The partner's sperm was injected into the vitrified-warmed oocytes.
Main results and the role of chance
The age groups in the first freezing cycle were 30-34 years (7.4%), 35-39 years (49.8%), 40-44 years (37.2%), and 45 years and older (5.6%), respectively. The mean number of OPU cycles was 1.1±0.4, 1.4±1.4, 1.5±1.1, and 1.7±1.7. The average number of retrieved oocytes was 9.5 ± 5.4, 7.3 ± 4.5, 5.6 ± 4.6, and 2.2 ± 2.2. The total number of cryopreserved oocytes was 10.4±5.9, 10.4±7.1, 8.8±6.8, and 3.3±3.4. Sixty-seven women had partners after oocyte cryopreservation, and 33 women (49.3%) had oocytes thawed. The mean age at oocytes freezing was 39.6±2.6 years, and the mean age at thawing was 42.2±2.5 years. The oocytes survival rates, fertilization rates, blastocyst rates and clinical pregnancy rates per embryo transferred of vitrified oocytes were 92.7% (328/354), 69.5% (228/328), 43.9% (87/198) and 31.1% (19/61), respectively. Of these, 15 women (45.5%) became pregnant with vitrified-warmed oocytes, and 10 (30.3%) had livebirth. 18 women did not become pregnant with vitrified-warmed oocytes. Subsequently, 3 of the 18 women then became pregnant in ART (5.6%), by IUI (5.6%), or spontaneously (5.6%), respectively.
Limitations, reasons for caution
Not applicable.
Wider implications of the findings
Of the 33 cases, 10 (30.3%) successfully gave birth, indicating the usefulness of oocyte cryopreservation for social reasons. However, considering that most of our patients were already around 40 years old, awareness of the benefits of oocytes cryopreservation at younger ages and education of reproductive health and rights is essential.
Trial registration number
none
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Affiliation(s)
- N Okuyama
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - N Oka
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - N Aono
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
- Kyono ART Clinic Sendai, ART Lab , Tokyo, Japan
| | - M Tsunoda
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - M Ishii
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - Y Fukuoka
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - A Koizumi
- Kyono ART Clinic Takanawa, ART Lab , Tokyo, Japan
| | - K Yoshinaga
- Kyono ART Clinic Takanawa , Gynecology, Tokyo, Japan
| | - T Hashimoto
- Kyono ART Clinic Takanawa , Gynecology, Tokyo, Japan
| | - K Kyono
- Kyono ART Clinic Takanawa , Gynecology, Tokyo, Japan
- Kyono ART Clinic Sendai , Gynecology, Sendai, Japan
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Yamaki K, Terashi M, Ogura S, Inoue S, Naka N, Nakagaki T, Oka N, Koyama Y. Anti-allergic effect of the Src family kinase inhibitor saracatinib. Pharmazie 2020; 75:339-343. [PMID: 32635977 DOI: 10.1691/ph.2020.9949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
The aim of this study was to evaluate the anti-anaphylactic and anti-allergic potentials of saracatinib, a Src family kinase inhibitor that was already shown to be safe in clinical trials when it was used as an anti-cancer drug. Using in vitro mast cell models, we found that saracatinib inhibited the degranulation response and cytokine production in RBL2H3 cells that were stimulated with IgE and antigen without affecting cell viability. Phosphorylation of Lyn, Akt, a PI3K substrate, and MAPKs including ERK, JNK, and p38, as well as the intracellular Ca2+ increase induced by this stimulation were also suppressed by saracatinib. This drug also inhibited symptoms in our established anaphylaxis mouse model, anaphylaxis-dependent spotted distribution of immune complex in skin (ASDIS). The intravenous injection of the mixture of IgE and antigen induced acute spotted distribution of immune complex in skin in hairless HR-1 mice, and its inhibition by intradermal injection of saracatinib was observed. Moreover, toluidine blue-stained skin sections indicated that the degranulation ratio of dermal mast cells was reduced in saracatinib-treated skin compared with vehicle-treated skin. Because only a few signaling inhibitors are used as anti-anaphylaxis and anti-allergic drugs, these results indicated the valuable suggestion that saracatinib and the Src family kinase inhibitors are good candidates for anti-anaphylaxis and anti-allergic drugs.
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Affiliation(s)
- K Yamaki
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan;,
| | - M Terashi
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
| | - S Ogura
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
| | - S Inoue
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
| | - N Naka
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
| | - T Nakagaki
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
| | - N Oka
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
| | - Y Koyama
- Laboratory of Pharmacology, Kobe Pharmaceutical University, Kobe, Japan
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Abe K, Hiraide K, Ichimura K, Kishimoto Y, Kobayashi K, Kobayashi M, Moriyama S, Nakahata M, Norita T, Ogawa H, Sato K, Sekiya H, Takachio O, Takeda A, Tasaka S, Yamashita M, Yang B, Kim N, Kim Y, Itow Y, Kanzawa K, Kegasa R, Masuda K, Takiya H, Fushimi K, Kanzaki G, Martens K, Suzuki Y, Xu B, Fujita R, Hosokawa K, Miuchi K, Oka N, Takeuchi Y, Kim Y, Lee K, Lee M, Fukuda Y, Miyasaka M, Nishijima K, Nakamura S. Direct dark matter search by annual modulation with 2.7 years of XMASS-I data. Int J Clin Exp Med 2018. [DOI: 10.1103/physrevd.97.102006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kuwahara M, Suzuki H, Oka N, Yanagimoto S, Sadakane S, Fukumoto Y, Yamana M, Kawai S, Okazaki M, Kusunoki S. Therapeutic strategy and electron microscopic abnormality in chronic inflammatory demyelinating polyneuropathy with anti-neurofascin155 igG4 antibody. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Oki R, Kawarai T, Morigaki R, Oka N, Murakami N, Izumi Y, Goto S, Kaji R. Neuropathological investigation of transgenic mice overexpressing hTFG harboring HMSN-P mutation. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Takeuchi H, Kawasaki T, Takasaki H, Shigematsu K, Kawamura K, Oka N. Extracellular traps in vasculitic neuropathy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Takeuchi T, Aono N, Oka N, Obata R, Okuyama N, Machida M, Nagao K, Igarashi H, Kyono K. Does sperm origin have an impact on morphokinetics of human zygotes? Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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10
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Aono N, Obata R, Maekawa S, Oka N, Takeuchi T, Igarashi H, Kyono K. The morphokinetic characteristics of embryos derived from pcos patients. Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Tanaka H, Fujii T, Shinozaki M, Koshizaka J, Saito K, Oka N, Suzuki S. MP125EFFICACY OF COMBINATION THERAPY WITH CORTICOSTEROID AND CYCLOSPORINE AS REMISSION INDUCTION THERAPY FOR IDIOPATHIC MEMBRANOUS NEPHROPATHY WITH NEPHROTIC SYNDROME. Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw185.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Fujii T, Suzuki S, Shinozaki M, Saito K, Koshizaka J, Oka N, Tanaka H. SP142DOES HEMATURIA AT THE TIME OF RECURRENCE AFTER THE CLINICAL REMISSION OF IGA NEPHROPATHY INFLUENCE THE LONG-TERM RENAL PROGNOSIS? Nephrol Dial Transplant 2016. [DOI: 10.1093/ndt/gfw160.23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Okuyama N, Takeuchi T, Aono N, Oka N, Obata R, Yanagihori S, Okuda T, Kyono K. Impact of assisted oocyte activation on morphokinetics of early human embryos. Fertil Steril 2015. [DOI: 10.1016/j.fertnstert.2015.07.949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Fujii T, Suzuki S, Shinozaki M, Oka N, Tanaka H. FP125REMISSION OF ONLY PROTEINURIA BUT NOT REMISSION OF HEMATURIA IS IMPORTANT FOR LONG-TERM RENAL PROGNOSIS IN IGA NEPHROPATHY. Nephrol Dial Transplant 2015. [DOI: 10.1093/ndt/gfv171.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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15
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Kawakami F, Semba S, Itami H, Oka N, Sudo T, Ebina Y, Ohbayashi C, Mikami Y, Yokozaki H, Itoh T. Pathogenesis of combined high-grade squamous intraepithelial lesion and adenocarcinoma in situ of the uterine cervix: human papillomavirus genotype and methylation status and immunohistochemical study. Kobe J Med Sci 2014; 60:E66-E73. [PMID: 25612672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To determine the etiology of combined high-grade squamous intraepithelial lesion (HSIL) and adenocarcinoma in situ (AIS) of the uterine cervix, we examined human papillomavirus (HPV) subtypes, methylation status of the HPV-16 L1 gene, and immunohistochemical staining pattern of Krt7 in 8 cases of combined HSIL and AIS. Overall, 6 (75%) of 8 patients with combined HSIL and AIS were infected by the same subtype of HPV in both HSIL and AIS (cases 1-5, HPV-16; and case 6, HPV-18), whereas 2 (25%) patients showed infection with different subtypes of HPV (case 7, HPV-31 and -18; and case 8, HPV-52 and -16, in HSIL and AIS, respectively). The degrees of methylation at CpG islands within the HPV-16 L1 gene were almost equivalent between HSIL and AIS in cases 1-4, whereas a great difference in CpG methylation patterns between two was seen in only 1 case (case 5). In addition, both patients infected with different subtypes of HPV between HSIL and AIS were positive for Krt7 only within the AIS component. Based on these results, we propose two distinct developmental pathways of combined HSIL and AIS of the uterine cervix, the common pathway and the individual pathway.
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Affiliation(s)
- Fumi Kawakami
- Department of Diagnostic Pathology, Kobe University Hospital, Kobe, Japan
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Kitamura T, Torii S, Oka N, Horai T, Itatani K, Shibata M, Tamura T, Miyaji K. 006 * IMPACT OF ENTRY SITE ON LATE OUTCOME IN ACUTE STANFORD TYPE B AORTIC DISSECTION. Interact Cardiovasc Thorac Surg 2014. [DOI: 10.1093/icvts/ivu276.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Abe K, Hieda K, Hiraide K, Hirano S, Kishimoto Y, Ichimura K, Kobayashi K, Moriyama S, Nakagawa K, Nakahata M, Ogawa H, Oka N, Sekiya H, Shinozaki A, Suzuki Y, Takeda A, Takachio O, Umemoto D, Yamashita M, Yang BS, Tasaka S, Liu J, Martens K, Hosokawa K, Miuchi K, Murata A, Onishi Y, Otsuka Y, Takeuchi Y, Kim YH, Lee KB, Lee MK, Lee JS, Fukuda Y, Itow Y, Masuda K, Takiya H, Uchida H, Kim NY, Kim YD, Kusaba F, Nishijima K, Fujii K, Murayama I, Nakamura S. Search for bosonic superweakly interacting massive dark matter particles with the XMASS-I detector. Phys Rev Lett 2014; 113:121301. [PMID: 25279618 DOI: 10.1103/physrevlett.113.121301] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Indexed: 06/03/2023]
Abstract
Bosonic superweakly interacting massive particles (super-WIMPs) are a candidate for warm dark matter. With the absorption of such a boson by a xenon atom, these dark matter candidates would deposit an energy equivalent to their rest mass in the detector. This is the first direct detection experiment exploring the vector super-WIMPs in the mass range between 40 and 120 keV. With the use of 165.9 day of data, no significant excess above background was observed in the fiducial mass of 41 kg. The present limit for the vector super-WIMPs excludes the possibility that such particles constitute all of dark matter. The absence of a signal also provides the most stringent direct constraint on the coupling constant of pseudoscalar super-WIMPs to electrons. The unprecedented sensitivity was achieved exploiting the low background at a level 10(-4) kg-1 keVee-1 day-1 in the detector.
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Affiliation(s)
- K Abe
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Hieda
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - K Hiraide
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - S Hirano
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - Y Kishimoto
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Ichimura
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Kobayashi
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - S Moriyama
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Nakagawa
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - M Nakahata
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - H Ogawa
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - N Oka
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - H Sekiya
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - A Shinozaki
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - Y Suzuki
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - A Takeda
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - O Takachio
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - D Umemoto
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan
| | - M Yamashita
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - B S Yang
- Kamioka Observatory, Institute for Cosmic Ray Research, the University of Tokyo, Higashi-Mozumi, Kamioka, Hida, Gifu 506-1205, Japan and Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - S Tasaka
- Information and Multimedia Center, Gifu University, Gifu 501-1193, Japan
| | - J Liu
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Martens
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan
| | - K Hosokawa
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - K Miuchi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - A Murata
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y Onishi
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y Otsuka
- Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y Takeuchi
- Kavli Institute for the Physics and Mathematics of the Universe (WPI), the University of Tokyo, Kashiwa, Chiba 277-8582, Japan and Department of Physics, Kobe University, Kobe, Hyogo 657-8501, Japan
| | - Y H Kim
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
| | - K B Lee
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
| | - M K Lee
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
| | - J S Lee
- Korea Research Institute of Standards and Science, Daejeon 305-340, South Korea
| | - Y Fukuda
- Department of Physics, Miyagi University of Education, Sendai, Miyagi 980-0845, Japan
| | - Y Itow
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan and Kobayashi-Masukawa Institute for the Origin of Particles and the Universe, Nagoya University, Furu-cho, Chikusa-ku, Nagoya, Aichi 464-8602, Japan
| | - K Masuda
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - H Takiya
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - H Uchida
- Solar Terrestrial Environment Laboratory, Nagoya University, Nagoya, Aichi 464-8602, Japan
| | - N Y Kim
- Department of Physics, Sejong University, Seoul 143-747, South Korea
| | - Y D Kim
- Department of Physics, Sejong University, Seoul 143-747, South Korea
| | - F Kusaba
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - K Nishijima
- Department of Physics, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - K Fujii
- Department of Physics, Faculty of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - I Murayama
- Department of Physics, Faculty of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
| | - S Nakamura
- Department of Physics, Faculty of Engineering, Yokohama National University, Yokohama, Kanagawa 240-8501, Japan
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Kawamoto M, Kohara N, Ishii J, Yoshimura H, Higashida K, Oka N, Sone J, Sobue G. P630: Slowing of peripheral nerve conduction in patients with adult onset sporadic neuronal intranuclear inclusion disease (NIID) with leukoencephalopathy. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)50723-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Kitamura T, Torii S, Oka N, Horai T, Nakashima K, Itatani K, Koyama S, Hari Y, Araki H, Sato H, Miyaji K. Key success factors for thoracic endovascular aortic repair for non-acute Stanford type B aortic dissection. Eur J Cardiothorac Surg 2014; 46:432-7; discussion 437. [DOI: 10.1093/ejcts/ezu012] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
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Kitamura T, Oka N, Nakashima K, Itatani K, Koyama S, Hari Y, Araki H, Miyaji K. 296 * KEY SUCCESS FACTORS FOR THORACIC ENDOVASCULAR AORTIC REPAIR FOR NON-ACUTE STANFORD TYPE B AORTIC DISSECTION. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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21
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Shigematsu K, Ito T, Oka N, Nakano H, Watanabe Y. Seasonal variation in stroke occurrences in Japan. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.742] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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22
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Kawasaki T, Oka N, Yagi H, Akiguchi I. Cyclin /INS;D1 expression in Schwann cell nucleus associated with the stage of nerve regeneration. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.2435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Wakahashi S, Sudo T, Oka N, Ueno S, Yamaguchi S, Fujiwara K, Ohbayashi C, Nishimura R. VAV1 represses E-cadherin expression through the transactivation of Snail and Slug: a potential mechanism for aberrant epithelial to mesenchymal transition in human epithelial ovarian cancer. Transl Res 2013; 162:181-90. [PMID: 23856093 DOI: 10.1016/j.trsl.2013.06.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Revised: 06/17/2013] [Accepted: 06/19/2013] [Indexed: 11/19/2022]
Abstract
Ovarian cancer is the most lethal gynecological malignancy in the western world. Although patients with early-stage ovarian cancer generally have a good prognosis, approximately 20%-30% of patients will die of the disease, and 5-year recurrence rates are 25%-45%, highlighting the need for improved detection and treatment. We investigated the role of VAV1, a protein with guanine nucleotide exchange factor activity, which is associated with survival in patients with early-stage ovarian cancer (International of Obstetrics and Gynecology [FIGO] stages I and II). We analyzed 88 samples from patients with primary epithelial ovarian cancer, which were divided into FIGO stages I and II (n = 46), and III and IV (n = 42). Prognostic analysis revealed that upregulated VAV1 expression correlated significantly with poor prognosis in patients with early-stage epithelial ovarian cancer (P ≤ 0.05), but not with other clinicopathologic features. Stable overexpression of VAV1 in human high-grade serous ovarian cancer SKOV3 cells induced morphologic changes indicative of loss of intercellular adhesions and organized actin stress fibers. Western blotting and real-time reverse transcriptase-polymerase chain reaction demonstrated that these cells had downregulated E-cadherin protein and messenger RNA levels, respectively. This downregulation is associated with epithelial-mesenchymal transition (EMT) and invasive cancer. Furthermore, VAV1 overexpression in both SKOV3 and human ovarian surface epithelial cells demonstrated that its upregulation of an E-cadherin transcriptional repressor, Snail and Slug, was not confined to ovarian cancer cells. Conversely, knockdown of VAV1 by RNA interference reduced Snail and Slug. Our findings suggest that VAV1 may play a role in the EMT of ovarian cancer, and may serve as a potential therapeutic target.
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Affiliation(s)
- Senn Wakahashi
- Department of Gynecologic Oncology, Hyogo Cancer Center, Akashi, Hyogo, Japan
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Kosumi D, Kita M, Fujii R, Sugisaki M, Oka N, Takaesu Y, Taira T, Iha M, Hashimoto H. Excitation Energy-Transfer Dynamics of Brown Algal Photosynthetic Antennas. J Phys Chem Lett 2012; 3:2659-2664. [PMID: 26295888 DOI: 10.1021/jz300612c] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fucoxanthin-chlorophyll-a/c protein (FCP) complexes from brown algae Cladosiphon okamuranus TOKIDA (Okinawa Mozuku in Japanese) contain the only species of carbonyl carotenoid, fucoxanthin, which exhibits spectral characteristics attributed to an intramolecular charge-transfer (ICT) property that arises in polar environments due to the presence of the carbonyl group in its polyene backbone. Here, we investigated the role of the ICT property of fucoxanthin in ultrafast energy transfer to chlorophyll-a/c in brown algal photosynthesis using femtosecond pump-probe spectroscopic measurements. The observed excited-state dynamics show that the ICT character of fucoxanthin in FCP extends its absorption band to longer wavelengths and enhances its electronic interaction with chlorophyll-a molecules, leading to efficient energy transfer from fucoxanthin to chlorophyll-a.
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Affiliation(s)
- D Kosumi
- †The Osaka City University Advanced Research Institute for Natural Science and Technology (OCARINA), 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
- ‡JST/CREST, 4-1-8 Hon-chou, Kawaguchi, Saitama 332-0012, Japan
| | - M Kita
- ‡JST/CREST, 4-1-8 Hon-chou, Kawaguchi, Saitama 332-0012, Japan
- §Department of Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - R Fujii
- †The Osaka City University Advanced Research Institute for Natural Science and Technology (OCARINA), 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
- ⊥JST/PRESTO, 4-1-8 Hon-chou, Kawaguchi, Saitama 332-0012, Japan
| | - M Sugisaki
- ‡JST/CREST, 4-1-8 Hon-chou, Kawaguchi, Saitama 332-0012, Japan
- §Department of Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
| | - N Oka
- #South Product Co. Ltd., 12-75 Suzaki, Uruma-shi, Okinawa 904-2234, Japan
| | - Y Takaesu
- #South Product Co. Ltd., 12-75 Suzaki, Uruma-shi, Okinawa 904-2234, Japan
| | - T Taira
- #South Product Co. Ltd., 12-75 Suzaki, Uruma-shi, Okinawa 904-2234, Japan
| | - M Iha
- #South Product Co. Ltd., 12-75 Suzaki, Uruma-shi, Okinawa 904-2234, Japan
| | - H Hashimoto
- †The Osaka City University Advanced Research Institute for Natural Science and Technology (OCARINA), 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
- ‡JST/CREST, 4-1-8 Hon-chou, Kawaguchi, Saitama 332-0012, Japan
- §Department of Physics, Graduate School of Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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Kurosu A, Oka N, Hamaguchi T, Yoshikawa N, Joh K. Infantile Immunoglobulin A Nephropathy Showing Features of Membranoproliferative Glomerulonephritis. TOHOKU J EXP MED 2012; 228:253-8. [DOI: 10.1620/tjem.228.253] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Akira Kurosu
- Department of Legal Medicine, Dokkyo Medical University
- Division of Pathology, Sendai-Shakaihoken Hospital
| | - Noriko Oka
- Department of Nephrology, Yamada Red Cross Hospital
| | | | | | - Kensuke Joh
- Division of Pathology, Sendai-Shakaihoken Hospital
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Yamakami I, Yoshinori H, Saeki N, Wada M, Oka N. Hearing preservation and intraoperative auditory brainstem response and cochlear nerve compound action potential monitoring in the removal of small acoustic neurinoma via the retrosigmoid approach. J Neurol Neurosurg Psychiatry 2009; 80:218-27. [PMID: 18977821 DOI: 10.1136/jnnp.2008.156919] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE Hearing preservation is the main focus of small acoustic neurinoma (AN) removal. Refinement of intraoperative auditory monitoring may improve postoperative hearing. We have introduced a newly designed intracranial electrode enabling continuous monitoring of the cochlear nerve compound action potential (CNAP). We performed simultaneous monitoring of the auditory brainstem response (ABR) and CNAP during retrosigmoid small AN removal, and clarified the surgical outcome and the usefulness of CNAP monitoring. METHODS Twenty-two consecutive patients with a small AN underwent retrosigmoid tumour removal with attempting hearing preservation. ABR and CNAP were simultaneously monitored during tumour removal. RESULTS AN was totally removed in all patients without facial palsy. Preservation rate of useful and serviceable hearing was 82% and 91%, respectively. During microsurgical tumour removal, various surgical equipments and procedures intensified artefacts of ABR, and reliable ABR monitoring with distinct wave V was obtained in 9/22 patients. Unaffected by artefacts, reliable CNAP monitoring was obtained more frequently (in 20/22 patients) than ABR (p = 0.0005). CNAP on completion of tumour removal predicted hearing preservation with no false positive or negative (100% sensitivity and 100% specificity). CNAP changed dynamically and stepwise with surgical manipulations. CONCLUSION The retrosigmoid approach using auditory monitoring for a small AN can accomplish total tumour removal with an excellent hearing preservation rate. CNAP provides reliable auditory monitoring more frequently than ABR, reflects the intraoperative auditory function almost in real-time, predicts postoperative hearing with excellent sensitivity and specificity, and is more useful for monitoring in the removal of small AN with hearing preservation.
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Affiliation(s)
- I Yamakami
- Neurosurgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuoku, Chiba, Japan 260-8670.
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Kato T, Shinoda J, Oka N, Miwa K, Nakayama N, Yano H, Maruyama T, Muragaki Y, Iwama T. Analysis of 11C-methionine uptake in low-grade gliomas and correlation with proliferative activity. AJNR Am J Neuroradiol 2008; 29:1867-71. [PMID: 18687745 DOI: 10.3174/ajnr.a1242] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The relationship of (11)C-methionine (MET) uptake and tumor activity in low-grade gliomas (those meeting the criteria for World Health Organization [WHO] grade II gliomas) remains uncertain. The aim of this study was to compare MET uptake in low-grade gliomas and to analyze whether MET positron-emission tomography (PET) can estimate tumor viability and provide evidence of malignant transformation. MATERIALS AND METHODS We studied glioma metabolic activity in 49 consecutive patients with newly diagnosed grade II gliomas by using MET PET before surgical resection. On MET PET, we measured tumor/normal brain uptake ratio (T/N ratio) in 21 diffuse astrocytomas (DAs), 12 oligodendrogliomas (ODs), and 16 oligoastrocytomas (OAs). We compared MET T/N ratio among these 3 tumors and investigated possible correlation with proliferative activity, as measured by Mib-1 labeling index (LI). RESULTS MET T/N ratios of DA, OD, and OA were 2.11 +/- 0.87, 3.75 +/- 1.43, and 2.76 +/- 1.27, respectively. The MET T/N ratio of OD was significantly higher than that of DA (P < .005). In comparison of MET T/N ratios with the Mib-1 LI, a significant correlation was shown in DA (r = 0.63; P < .005) but not in OD and OA. CONCLUSION MET uptake in DAs may be closely associated with tumor viability, which depends on increased amino acid transport by an activated carrier-mediated system. DAs with lower MET uptake were considered more quiescent lesions, whereas DA with higher MET uptake may act more aggressively.
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Affiliation(s)
- T Kato
- Chubu Medical Center for Prolonged Traumatic Brain Dysfunction, Kizawa Memorial Hospital, Minokamo City, Gifu, Japan.
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Fukumori T, Oka N, El-Moula M, Nakanishi R, Taue R, Kishimoto T, Izaki H, Takahashi M, Kagawa S, Kanayama H. MP-16.09: Galectin-3 is overexpressed in renal cell carcinoma and it regulates immune suppression through the induction of apoptosis of cytotoxic T cells. Urology 2007. [DOI: 10.1016/j.urology.2007.06.469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Tanaka A, Kawai T, Takabatake T, Oka N, Okamoto H, Bersohn M. Synthesis of an azaspirane via Birch reduction alkylation prompted by suggestions from a computer program. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.07.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Abstract
Galectin-3, a member of the beta-galactoside-binding gene family, is a multifunctional protein implicated in a variety of biological functions, including tumor cell adhesion, proliferation, differentiation, angiogenesis, cancer progression and metastasis. Recent studies revealed that intracellular galectin-3 exhibits the activity to suppress drug induced apoptosis and anoikis (apoptosis induced by the loss of cell anchorage) that contribute to cell survival. Resistance to apoptosis is essential for cancer cell survival and plays a role in tumor progression. Conversely, it was recently shown that tumor cells' secreted galectin-3 induces T-cells' apoptosis, thus playing a role in the immune escape mechanism during tumor progression through induction of apoptosis of cancer-infiltrating T-cells. This review summarizes recent evidences on the role of galectin-3 as an anti-apoptotic and/or pro-apoptotic factor in various cell types and discusses the recent understanding of the molecular mechanisms of galectin-3 role in apoptosis. We also suggest potential directions for further analyses of this multifunctional protein.
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Affiliation(s)
- S Nakahara
- Tumor Progression and Metastasis Program, Karmanos Cancer Institute, Wayne State University, Detroit, MI 48201, USA
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Koike H, Hirayama M, Yamamoto M, Ito H, Hattori N, Umehara F, Arimura K, Ikeda S, Ando Y, Nakazato M, Kaji R, Hayasaka K, Nakagawa M, Sakoda S, Matsumura K, Onodera O, Baba M, Yasuda H, Saito T, Kira J, Nakashima K, Oka N, Sobue G. Age associated axonal features in HNPP with 17p11.2 deletion in Japan. J Neurol Neurosurg Psychiatry 2005; 76:1109-14. [PMID: 16024889 PMCID: PMC1739771 DOI: 10.1136/jnnp.2004.048140] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To clarify age related changes in the clinicopathological features of hereditary neuropathy with liability to pressure palsy (HNPP) in Japanese patients with deletion of 17p11.2, particularly concerning axonal abnormalities. METHODS Forty eight proband patients from 48 HNPP families were assessed as to clinical, electrophysiological, and histopathological features, including age associated changes beyond those in controls. RESULTS Motor conduction studies showed age associated deterioration of compound muscle action potentials in nerves vulnerable to repetitive compression (median, ulnar, and peroneal nerves), but not in others such as the tibial nerve. Sensory conduction studies revealed more profound reduction of action potentials than motor studies with little age related change. Large myelinated fibre loss was seen in the sural nerve irrespective of age at examination. CONCLUSIONS Irreversible axonal damage may occur at entrapment sites in motor nerves in HNPP patients, progressing with aging. Sensory nerves may show more profound axonal abnormality, but without age association. The electrophysiological features of HNPP are presumed to be a mixture of abnormalities occurring from early in life and acquired features caused by repetitive insults at entrapment sites. Unlike Charcot-Marie-Tooth disease type 1A, age associated axonal damage may not occur unless the nerves are subjected to compression.
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Affiliation(s)
- H Koike
- Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
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Mizutani K, Oka N, Kaji R, Matsui M, Asanuma K, Kubori T, Kojima Y, Kanda M, Kawanishi T, Tomimoto H, Akiguchi I, Shibasaki H. CD16+CD57– Natural Killer Cells in Multifocal Motor Neuropathy. Eur Neurol 2005; 53:64-7. [PMID: 15753615 DOI: 10.1159/000084301] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2004] [Accepted: 12/13/2004] [Indexed: 11/19/2022]
Abstract
We analyzed the CD16+CD57- lymphocyte subset, which is considered to have strong natural killer (NK) cell activity, in peripheral blood from patients with chronic immune-mediated neuropathies and patients with other neurological diseases. We found that the ratio of CD16+CD57- NK cells to total lymphocytes was increased in 4 of 6 patients with multifocal motor neuropathy (MMN) with persistent conduction block. Since the CD16 molecule is an Fc receptor for immunoglobulin G (IgG), high-dose intravenous immunoglobulin (IVIg) may interfere with CD16+CD57- NK cells via Fc receptor blockade. In addition, cyclophosphamide (Cy) is often used to suppress NK cells. Therefore, our findings may partly account for the effectiveness of IVIg or Cy, which is the current treatment of choice for MMN.
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Affiliation(s)
- K Mizutani
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Iijima M, Yamamoto M, Hirayama M, Tanaka F, Katsuno M, Mori K, Koike H, Hattori N, Arimura K, Nakagawa M, Yoshikawa H, Hayasaka K, Onodera O, Baba M, Yasuda H, Saito T, Nakazato M, Nakashima K, Kira J, Kaji R, Oka N, Sobue G. Clinical and electrophysiologic correlates of IVIg responsiveness in CIDP. Neurology 2005; 64:1471-5. [PMID: 15851750 DOI: 10.1212/01.wnl.0000158680.89323.f8] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
To identify clinical and electrophysiologic features related to IV immunoglobulin (IVIg) responsiveness in chronic inflammatory demyelinating polyneuropathy (CIDP), the authors conducted a multicenter study on 312 patients with CIDP (199 responders and 113 nonresponders). Muscle atrophy and decreased compound muscle action potential were pronounced in nonresponders of IVIg. Male gender, longer disease duration, and slow progression of symptoms were also associated with IVIg unresponsiveness. Features suggesting axonal dysfunction in peripheral nerves indicated IVIg unresponsiveness in CIDP.
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Affiliation(s)
- M Iijima
- Department of Neurology, Nagoya University Graduate School of Medicine, Tsurumai, Nagoya, Japan
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Satoi H, Tomimoto H, Ohtani R, Kitano T, Kondo T, Watanabe M, Oka N, Akiguchi I, Furuya S, Hirabayashi Y, Okazaki T. Astroglial expression of ceramide in Alzheimer's disease brains: a role during neuronal apoptosis. Neuroscience 2005; 130:657-66. [PMID: 15590150 DOI: 10.1016/j.neuroscience.2004.08.056] [Citation(s) in RCA: 142] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2004] [Indexed: 11/24/2022]
Abstract
Accumulating evidences indicate that ceramide is closely involved in apoptotic cell death in neurodegenerative disorders and aging. We examined ceramide levels in the cerebrospinal fluid (CSF) or brain tissues from patients with neurodegenerative disorders and the mechanism of how intra- and extracellular ceramide was regulated during neuronal apoptosis. We screened the ceramide levels in the CSF of patients with neurodegenerative disorders, and found that ceramide was significantly increased in patients with Alzheimer's disease (AD) than in patients with age-matched amyotrophic lateral sclerosis (ALS) and other neurological controls. With immunohistochemistry in AD brains, ceramide was aberrantly expressed in astroglia in the frontal cortices, but not detected in ALS and control brains. To explore for the regulation of ceramide in astroglia in Alzheimer's disease brains, we examined the metabolism of ceramide during neuronal apoptosis. In retinoic acid (RA)-induced neuronal apoptosis, RA slightly increased de novo synthesis of ceramide, but interestingly, RA dramatically inhibited conversion of [14C] ceramide to glucosylceramide (GlcCer), suggesting that the increase of ceramide mass is mainly due to inhibition of the ceramide-metabolizing enzyme GlcCer synthase. In addition, a significant increase of the [14C] ceramide level in the culture medium was detected by chasing and turnover experiments without alteration of extracellular [14C] sphingomyelin levels. A 2.5-fold increase of ceramide mass in the supernatant was also detected after 48 h of treatment with RA. These results suggest a regulatory mechanism of intracellular ceramide through inhibition of GlcCer synthase and a possible role of ceramide as an extracellular/intercellular mediator for neuronal apoptosis. The increased ceramide level in the CSF from AD patients, which may be derived from astroglia, raises a possibility of neuronal apoptosis by the response to intercellular ceramide in AD.
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Affiliation(s)
- H Satoi
- Department of Neurology, Graduate School of Medicine, Kyoto University, 54-Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-5807, Japan
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Yamakami I, Uchino Y, Kobayashi E, Yamaura A, Oka N. Removal of large acoustic neurinomas (vestibular schwannomas) by the retrosigmoid approach with no mortality and minimal morbidity. J Neurol Neurosurg Psychiatry 2004; 75:453-8. [PMID: 14966164 PMCID: PMC1738959 DOI: 10.1136/jnnp.2003.010827] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To evaluate the safety and efficacy of removing large acoustic neurinomas (> or =3 cm) by the retrosigmoid approach. METHODS Large acoustic neurinomas (mean (SD), 4.1 (0.6) cm) were removed from 50 consecutive patients by the retrosigmoid suboccipital approach while monitoring the facial nerve using a facial stimulator-monitor. Excision began with the large extrameatal portion of the tumour, followed by removal of the intrameatal tumour, and then removal of the residual tumour in the extrameatal region just outside the porus acusticus. The last pieces of tumour were removed by sharp dissection from the facial nerve bidirectionally, and resected cautiously in a piecemeal fashion. RESULTS There were no postoperative deaths. The tumour was removed completely in 43 of 50 patients (86%). The facial nerve was anatomically preserved in 92% of the patients and 84% had excellent facial nerve function (House-Brackmann grade 1/2). One patient recovered useful hearing after tumour removal. Cerebrospinal fluid leak occurred in 4%, but there were no cases of meningitis. All but two patients (96%) had a good functional outcome. CONCLUSIONS The method resulted in a high rate of functional facial nerve preservation, a low incidence of complications, and good functional outcomes, with no mortality and minimal morbidity. Very favourable results can be obtained using the retrosigmoid approach for the removal of large acoustic neurinomas.
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Affiliation(s)
- I Yamakami
- Department of Neurosurgery, Chiba University School of Medicine, Chiba, Japan.
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37
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Wada T, Shimizu M, Oka N, Saigo K. A novel approach to the synthesis of oligodeoxyribonucleotide boranophosphates. Nucleic Acids Symp Ser 2003:135-6. [PMID: 12903305 DOI: 10.1093/nass/44.1.135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Deoxyribonucleoside 3'-boranophosphate derivatives including adenine, cytosine, guanine, and thymine bases were synthesized in good yields by the use of a new boranophosphorylation reaction. The reaction was found to be effective for the formation of internucleotidic boranophosphate linkages.
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Affiliation(s)
- T Wada
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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38
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Oka N, Wada T, Saigo K. Stereoselective synthesis of dinucleoside phosphorothioate using enantiopure 1,2-amino alcohols as chiral auxiliaries. Nucleic Acids Res Suppl 2003:13-4. [PMID: 12836240 DOI: 10.1093/nass/1.1.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Diastereopure nucleoside 3'-cyclic phosphoramidites were synthesized stereoselectively from enantiopure 1,2-amino alcohols. In the presence of a novel activator, these phosphoramidites underwent the condensation with 3'-O-tert-butyldimethylsilylthymidine to give the corresponding phosphite intermediates. Upon sulfurization, followed by deprotection, dithymidine phosphorothioate was obtained in good yield with good to excellent diastereoselectivity.
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Affiliation(s)
- N Oka
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, University of Tokyo, FSB-702, Kashiwanoha, Kashiwa 277-8562, Japan
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39
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Takamura K, Oka N, Akagi A, Okamoto K, Okada T, Fukuoka T, Hogaki A, Naito D, Oobayashi Y, Satoh N. EST analysis of genes that are expressed in the neural complex of Ciona intestinalis adults. Zoolog Sci 2001; 18:1231-6. [PMID: 11911079 DOI: 10.2108/zsj.18.1231] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A subtractive cDNA library was made corresponding to mRNAs expressed in the neural complex relative to those expressed in the pharynx of adults of the ascidian Ciona intestinalis. Determination and comparison of expressed sequence tags (ESTs) of a set of 1,527 randomly selected clones demonstrated that they represent 832 independent sequences. Five hundred seventy-two of the clones contained amino-acid-encoding sequences. BLASTX analyses showed that 342 of the 572 clones were strong matches (P < 10(-7)) to previously identified proteins, while the remaining 230 fell into the "no match" category. Among the clones matching previously identified proteins, about 80 clones represented proteins that are involved in the formation, maintenance of the structure, and function of the nervous system: 22 proteins are associated with signal transduction, five proteins are related to the synapse, 11 to transcription factors, nine to transporters, five to enzymes, and 13 to extracellular matrix and cytoskeletal components, and six to apoptosis. In addition, sequence information for genes associated with the immune system and for genes encoding proteins with interesting functions were obtained. These data provide cues for further studies on genes that are expressed in and function in the ascidian nervous system.
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Affiliation(s)
- K Takamura
- Department of Marine Biotechnology, Faculty of Engineering, Fukuyama University, Fukuyama 729-0292, Japan.
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40
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Yamanaka M, Kanda K, Li NC, Fukumori T, Oka N, Kanayama HO, Kagawa S. Analysis of the gene expression of SPARC and its prognostic value for bladder cancer. J Urol 2001; 166:2495-9. [PMID: 11696817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
PURPOSE We analyzed the gene expression of the glycoprotein termed secreted protein, acidic and rich in cysteine (SPARC), also called osteonectin and BM40, in bladder cancer and its relationship with conventional clinical-histopathological manifestations, evaluated its prognostic value for patient outcome and determined the possible mechanism underlying the effect of SPARC on bladder cancer progression. MATERIALS AND METHODS Tissue samples from 63 patients with bladder cancer were used for analysis. Gene expression levels of SPARC and matrix metalloproteinase-2 were analyzed using reverse transcription-polymerase chain reaction. Correlations of the expression of SPARC with histopathological findings or patient outcome and with matrix metalloproteinase-2 were evaluated. RESULTS Significantly higher expression of SPARC was observed in grades 3 and 2 than in grade 1 tumors (p <0.001 and <0.05, respectively). Stage T2 or greater invasive tumors expressed a significantly higher level of SPARC than stages T1 or less superficial tumors (p <0.0001). Patients in whom the lesions showed high SPARC expression had a significantly worse prognosis than those with low SPARC expression disease (p <0.0001). Even in those with invasive bladder cancer high SPARC expression was associated with significantly worse survival than low expression (p <0.01). Moreover, gene expression of SPARC significantly correlated with matrix metalloproteinase-2 gene expression (p <0.0001), implying that regulation of matrix metalloproteinase-2 expression may be a possible mechanism underlying the effect of SPARC on bladder cancer progression. CONCLUSIONS A significant correlation was detected of the gene expression level of SPARC with histological grade, pathological stage and bladder cancer prognosis. SPARC may have an important role in bladder cancer progression and provide some additional information in patients with bladder cancer.
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Affiliation(s)
- M Yamanaka
- Department of Urology, University of Tokushima School of Medicine, Tokushima, Japan
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41
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Mizutani K, Oka N, Kusunoki S, Kaji R, Mezaki T, Akiguchi I, Shibasaki H. Sensorimotor demyelinating neuropathy with IgM antibody against gangliosides GD1a, GT1b and GM3. J Neurol Sci 2001; 188:9-11. [PMID: 11489278 DOI: 10.1016/s0022-510x(01)00537-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We report a patient with sensorimotor demyelinating neuropathy with high-titer IgM antibody against gangliosides GD1a, GT1b and GM3. The patient was a 65-year-old male who was hospitalized with chief complaints of muscular weakness of all limbs and numbness of the hands and feet. Nerve-conduction studies revealed reduced conduction velocities of the motor nerves with increased temporal dispersion and loss of sensory nerve action potentials. Treatment with steroids was ineffective. IgM antibody against GD1a, GT1b and GM3, which are known to be the ligands for myelin-associated glycoprotein (MAG), might have played a role in the demyelination in this patient by inhibiting adhesion between myelin and axonal membrane.
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Affiliation(s)
- K Mizutani
- Department of Neurology, Faculty of Medicine, Kyoto University, 54 Shogoin Kawahara-cho, Kyoto 606-8507, Japan
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42
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Yamamoto Y, Oka N, Nishitani M, Kanayama H, Kagawa S. [Ectopic prostatic tissue in retrotrigone of the bladder: a case report]. Hinyokika Kiyo 2001; 47:501-4. [PMID: 11523137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
We herein report a case of ectopic prostatic tissue in the retrotrigone of the bladder. A 35-year-old man was referred to our hospital because of bladder tumor which was incidentally discovered on abdominal ultrasonography (US). US and computed tomography (CT) showed a tumor in the bladder wall 1.5 cm in diameter. Magnetic resonance imaging (MRI) revealed an invasive bladder tumor. Cystoscopy showed a non-papillary, wide-based tumor in the retrotrigone of the bladder. Transurethral resection of bladder tumor was carried out and pathological findings showed ectopic prostatic tissue. This is the 8th case of ectopic prostatic tissue in the Japanese literature.
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Affiliation(s)
- Y Yamamoto
- Department of Urology, the University of Tokushima School of Medicine
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Andorfer B, Kieseier BC, Mathey E, Armati P, Pollard J, Oka N, Hartung HP. Expression and distribution of transcription factor NF-kappaB and inhibitor IkappaB in the inflamed peripheral nervous system. J Neuroimmunol 2001; 116:226-32. [PMID: 11438178 DOI: 10.1016/s0165-5728(01)00306-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The NF-kappaB family of transcription factors is critically involved in the immune response. The activity of these proteins is under strict control of an inhibitory molecule called IkappaB. The present study investigated the expression and distribution pattern of NF-kappaB and IkappaB in sural nerve biopsies obtained from patients with Guillain-Barré syndrome, chronic inflammatory demyelinating polyradiculoneuropathy, and various non-inflammatory neuropathies. In inflammatory demyelinating as well as non-inflammatory neuropathies, NF-kappaB was primarily expressed by macrophages, as determined by immunohistochemistry. IkappaB, however, could be localized to macrophages as well as T cells in inflammatory demyelinating neuropathies, whereas in non-inflammatory controls Schwann cells were found to be the primary cell type expressing this inhibitor. Quantitation of immunoreactivity revealed a statistically significant increase of NF-kappaB expression in inflammatory demyelinating cases compared to controls. Our results suggest an important function of the NF-kappaB pool in the genesis of inflammatory demyelination in the peripheral nervous system.
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Affiliation(s)
- B Andorfer
- Department of Neurology, Karl-Franzens-University, Auenbruggerplatz 22, 8036, Graz, Austria
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Abstract
Bladder involvement in amyloidosis is unusual. The case of an 80-year-old man with macroscopic hematuria caused by secondary amyloidosis of the bladder is described. Cystoscopic examination revealed only a diffuse edematous area and bleeding. No tumor-like lesions were identified. Transurethral biopsy revealed amyloid deposits. Macroscopic hematuria disappeared spontaneously after cystoscopy and bladder biopsy. The patient has been followed up without treatment and is currently free of symptoms.
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Affiliation(s)
- N Oka
- Department of Urology, The University of Tokushima School of Medicine, Tokushima, Japan.
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45
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Affiliation(s)
- N Oka
- Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan.
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46
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Oka N, Yamamoto Y, Kurokawa Y, Kanayama H, Kagawa S. [A case of tuberculosis of the prostate presenting as endoscopically cavitary change]. Nihon Hinyokika Gakkai Zasshi 2001; 92:526-9. [PMID: 11449704 DOI: 10.5980/jpnjurol1989.92.526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
A 62-year-old man was admitted to our hospital with the chief complaint of terminal macroscopic hematuria. He had a history of left tuberculous epididymitis in 1994. On digital rectal examination, the prostate was found to be a normal size and slightly hard with no elasticity. Transcrectal ultrasound showed hypoechoic lesions in the peripheral zone. T1-weighted MRI demonstrated cavitary lesions and T2-weighted MRI demonstrated relatively low signal intensity in the same zone. Urethrography revealed various cystlike lesions in the prostatic urethra. Cystourethroscopy revealed cavitary change with many septa in the left lobe of the prostate. TUR-P was performed and histological findings of the specimen revealed tuberculosis of the prostate. The patient was treated with an antituberculous regimen of INH, RFP and EB.
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Affiliation(s)
- N Oka
- Department of Urology, Faculty of Medicine, Tokushima University, Tokushima, Japan
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47
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Oka N, Tachibana H. [Neurological symptoms and signs in electrolytic imbalance]. Ryoikibetsu Shokogun Shirizu 2001:406-9. [PMID: 11057272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- N Oka
- Fifth Department of Internal Medicine, Hyogo College of Medicine
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Abstract
To clarify the role of prostaglandins in peripheral nerve demyelination, we examined the expression of cyclooxygenase-2 (COX-2) using selected nerve specimens from patients with chronic inflammatory demyelinating polyneuropathy. COX-2 protein was up-regulated in macrophages causing active demyelination. In situ hybridization revealed that COX-2 mRNA signals were strongly expressed on macrophages adhering to the demyelinating nerve fibers at the endoneurium. This observation may provide a rationale for application of neuroprotective strategies employing COX-2 inhibitors in inflammatory demyelinating neuropathies.
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MESH Headings
- Adolescent
- Adult
- Aged
- Antigens, CD/analysis
- Antigens, Differentiation, Myelomonocytic/analysis
- Child
- Cyclooxygenase 2
- Female
- Humans
- Isoenzymes/genetics
- Isoenzymes/metabolism
- Macrophages/metabolism
- Macrophages/pathology
- Macrophages/ultrastructure
- Male
- Membrane Proteins
- Middle Aged
- Nerve Fibers, Myelinated/metabolism
- Nerve Fibers, Myelinated/pathology
- Nerve Fibers, Myelinated/ultrastructure
- Peripheral Nerves/enzymology
- Peripheral Nerves/pathology
- Peripheral Nerves/ultrastructure
- Polyradiculoneuropathy, Chronic Inflammatory Demyelinating/drug therapy
- Polyradiculoneuropathy, Chronic Inflammatory Demyelinating/enzymology
- Polyradiculoneuropathy, Chronic Inflammatory Demyelinating/pathology
- Prostaglandin-Endoperoxide Synthases/genetics
- Prostaglandin-Endoperoxide Synthases/metabolism
- RNA, Messenger/metabolism
- Up-Regulation/genetics
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Affiliation(s)
- T Kawasaki
- Department of Neurology, Graduate School of Medicine, Kyoto University, Japan
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Tamai O, Oka N, Kikuchi T, Koda Y, Soejima M, Wada Y, Fujisawa M, Tamaki K, Kawachi H, Shimizu F, Kimura H, Imaizumi T, Okuda S. Caveolae in mesangial cells and caveolin expression in mesangial proliferative glomerulonephritis. Kidney Int 2001; 59:471-80. [PMID: 11168929 DOI: 10.1046/j.1523-1755.2001.059002471.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Caveolae are plasma membrane invaginations that have a diameter of 40 to 60 nm. Recent evidences have demonstrated that caveolae contain a variety of signal transduction molecules. Caveolin is a marker protein of caveolae and has been proposed to play a negative regulatory role in signal transduction. The aim of this study was to investigate the behavior of caveolae and caveolin in experimental glomerulonephritis, the localization of both platelet-derived growth factor (PDGF) and transforming growth factor-beta (TGF-beta) receptors in the caveolae membrane, and the regulation of caveolin expression in cultured mesangial cells. METHODS The expression of caveolin-1 was examined by immunoblotting and immunohistology using anti-caveolin antibody in anti-Thy-1 nephritis. The caveolae membrane fraction of mesangial cells was isolated by sucrose gradient method and expression of PDGF receptor and TGF-beta receptor were detected by immunoblotting. The effects of mitogens such as phorbol 12-myristate 13-acetate (PMA) and PDGF on the expression of caveolin-1 protein and mRNA were also examined in cultured mesangial cells. RESULTS Caveolin-1 was mainly expressed in glomeruli and was significantly up-regulated in anti-Thy-1 nephritis rat kidney. In cultured mesangial cells, the membrane invaginations of caveolae were revealed by electron microscopy. PDGF receptors abounded in the caveolae membrane and rapidly changed their subcellular distribution after ligand stimulation. In contrast, TGF-beta receptors abounded in the non-caveolae membrane and did not change after ligand stimulation. Decreases in caveolin-1 protein, which were associated with increases in mRNA expression after the exposure of PMA or PDGF-BB, suggested an increased turnover of caveolin-1 in mesangial cells stimulated by mitogens. CONCLUSION To our knowledge, this electron microscopical study is the first to demonstrate the presence of caveolae in cultured mesangial cells. Caveolae integrate PDGF receptors, and caveolin-1 may play a role in the pathogenesis of the mesangial proliferative glomerular diseases through PDGF signaling.
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Affiliation(s)
- O Tamai
- Kasuya Minami Hospital, Fukuoka, Japan.
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Shinde A, Matsumae H, Maruyama A, Oida J, Kawamoto Y, Kouhara N, Oka N, Shirase T, Kitaichi M, Akiguchi I, Shibasaki H. [A patient with Crow-Fukase syndrome associated with pulmonary plasmacytoma]. Rinsho Shinkeigaku 2001; 41:121-5. [PMID: 11481854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
We here reported a 54-year-old female patient with Crow-Fukase syndrome associated with pulmonary plasmacytoma. She was found to have scattered tumor in 1990. Although the tumor had slowly grown for the last 10 years, she showed no clinical symptoms. Numbness and weakness of lower extremities began in June 1999, and she was referred to Kyoto University Hospital on Oct. 21 1999 for evaluation of progressive symptoms. She had skin pigmentation, edema of the lower extremities, lymphadenopathy, muscle weakness and sensory disturbance in a glove-and-stocking distribution. Serological examination showed monoclonal IgG-lambda gammopathy. Serum vascular endothelial growth factor (VEGF) was markedly elevated. Microscopic studies on biopsied sural nerve demonstrated mild decrease of myelinated fibers. Immunohistochemically, the pulmonary tumor was defined as an IgG (lambda type) plasmacytoma. After treatment with melphalan-prednisolone therapy, the neurological symptoms improved along with decrease of serum VEGF levels as well as the size of pulmonary plasmacytoma. This is the first report of a patient with Crow-Fukase syndrome associated with pulmonary plasmacytoma. This case suggests that growth of pulmonary plasmacytoma might have played an important role in the overproduction of VEGF and thus development of Crow-Fukase syndrome.
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Affiliation(s)
- A Shinde
- Department of Neurology, Kyoto University Graduate School of Medicine
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