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Kono M, Nagami Y, Nakaoka T, Matsuki A, Ominami M, Fukunaga S, Fujiwara Y. A pediatric case of endoscopic fistula closure using a polyglycolic acid sheet. Endoscopy 2023; 55:E825-E826. [PMID: 37348552 PMCID: PMC10287504 DOI: 10.1055/a-2095-2165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Affiliation(s)
- Mitsuhiro Kono
- Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Yasuaki Nagami
- Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Tatsuo Nakaoka
- Department of Surgical Medicine, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Akifumi Matsuki
- Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Masaki Ominami
- Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Shusei Fukunaga
- Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
| | - Yasuhiro Fujiwara
- Department of Gastroenterology, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan
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2
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Higashio A, Yoshioka T, Kanamori Y, Fujino A, Morotomi Y, Shibata T, Nakaoka T. Relationships Between Histopathological Findings in the Liver and Prognosis in Patients With Biliary Atresia. Clin Pathol 2022; 15:2632010X221132686. [PMID: 36339922 PMCID: PMC9629564 DOI: 10.1177/2632010x221132686] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 09/26/2022] [Indexed: 12/04/2022]
Abstract
BACKGROUND Biliary atresia (BA) is a progressive obstructive hepatic disease that requires early diagnosis and the prompt initiation of treatment. Although portoenterostomy (PES) is usually performed as the initial surgical procedure, the liver damage may subsequently progress, such that liver transplantation (LTx) may be required. In this study, we comprehensively evaluated the histopathology of liver samples collected during PES and retrospectively evaluated its relationship with prognosis. METHODS Forty-seven patients with BA who underwent PES between 2002 and 2021 were included. Their biopsy samples were semi-quantitatively graded according to the severity of liver fibrosis, bile duct proliferation, cholestasis, ductal plate malformation, and inflammatory cell infiltration; and the expression of cluster of differentiation (CD)3, CD20, human leukocyte antigen II-DR, and α-smooth muscle actin (α-SMA). The relationships of each with the prevalence of survival with native liver (SNL) were evaluated to identify prognostic markers. RESULTS The median postoperative duration of follow-up was 11.8 years (maximum, 18.0 years; minimum, 3.5 years). There were no deaths during this period, but LTx was performed in 31 patients and the final prevalence of SNL was 34.0% (16/47). There were negative correlations of liver fibrosis and α-SMA with SNL, and a positive correlation between CD20 and SNL. Multivariate analysis using a proportional hazards regression model showed that only CD20 expression was significant. CONCLUSIONS Comprehensive histopathological analysis of liver biopsy samples obtained at the time of PES showed a positive correlation between CD20 expression and SNL, suggesting that this may represent a useful prognostic marker. LEVEL OF EVIDENCE III.
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Affiliation(s)
- Atsushi Higashio
- Department of Surgery, Osaka Metropolitan University School of Medicine, Osaka, Japan,Atsushi Higashio, Department of Surgery, Osaka Metropolitan University School of Medicine, 1-4-3, Asahi-machi, Abeno-ku, Osaka 545-8585, Japan.
| | - Takako Yoshioka
- Department of Pathology, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Yutaka Kanamori
- Department of Pediatric Surgery, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Akihiro Fujino
- Department of Pediatric Surgery, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Yoshiki Morotomi
- Department of Pediatric Surgery, Tazuke Kofukai Medical Research Institute, Kitano Hospital, Osaka, Japan
| | - Toshihiko Shibata
- Department of Surgery, Osaka Metropolitan University School of Medicine, Osaka, Japan
| | - Tatsuo Nakaoka
- Department of Surgery, Osaka Metropolitan University School of Medicine, Osaka, Japan
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3
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Motomura K, Tabuchi Y, Enomoto Y, Nishida T, Nakaoka T, Mori D, Kouda M. Accurate axillary staging by superparamagnetic iron oxide-enhanced MRI at 1.5 T with fat-suppression sequence as an alternative to sentinel node biopsy in breast cancer. Br J Surg 2021; 108:e359-e360. [PMID: 34426828 DOI: 10.1093/bjs/znab277] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/01/2021] [Indexed: 01/03/2023]
Abstract
Superparamagnetic iron oxide (SPIO)-enhanced MRI at 1.5 T with fat-suppression sequence is useful for the detection of metastases in sentinel nodes localized by CT lymphography in patients with breast cancer. SPIO-enhanced MRI may offer an alternative to sentinel node biopsy and avoid axillary surgery itself for patients with breast cancer who have negative sentinel nodes on SPIO-enhanced MRI.
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Affiliation(s)
- K Motomura
- Department of Breast Surgery, Osaka General Medical Centre, Osaka, Japan
| | - Y Tabuchi
- Department of Breast Surgery, Osaka General Medical Centre, Osaka, Japan
| | - Y Enomoto
- Department of Radiology, Osaka General Medical Centre, Osaka, Japan
| | - T Nishida
- Department of Radiology, Osaka General Medical Centre, Osaka, Japan
| | - T Nakaoka
- Department of Radiology, Osaka General Medical Centre, Osaka, Japan
| | - D Mori
- Department of Radiology, Osaka General Medical Centre, Osaka, Japan
| | - M Kouda
- Department of Radiology, Osaka General Medical Centre, Osaka, Japan
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4
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Yokoyama S, Nakaoka T, Nukada T, Ikeda Y, Hara S. Meconium-related ileus mimicking ileal atresia in a full-term neonate. Pediatr Int 2021; 63:229-231. [PMID: 33529482 DOI: 10.1111/ped.14531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/27/2020] [Accepted: 07/07/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Satoshi Yokoyama
- Department of Pediatric Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Tatsuo Nakaoka
- Department of Pediatric Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Takayuki Nukada
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Yuka Ikeda
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Shigeto Hara
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
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5
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Yokoyama S, Nakaoka T, Matsuzaki S, Nukada T, Hara S. Successful olive oil enema through enterostomy in an extremely low birthweight infant with milk curd syndrome. Pediatr Int 2021; 63:110-111. [PMID: 33241900 DOI: 10.1111/ped.14364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 06/17/2020] [Accepted: 06/23/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Satoshi Yokoyama
- Department of Pediatric Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Tatsuo Nakaoka
- Department of Pediatric Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Sayaka Matsuzaki
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Takayuki Nukada
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Shigeto Hara
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
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Yokoyama S, Nakaoka T. Congenital biliary dilatation appearing 3 years after the correction of duodenal atresia with pancreaticobiliary maljunction. Pediatr Int 2020; 62:1389-1391. [PMID: 33201527 DOI: 10.1111/ped.14323] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/13/2020] [Accepted: 05/22/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Satoshi Yokoyama
- Department of, Pediatric Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Tatsuo Nakaoka
- Department of, Pediatric Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
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7
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Yokoyama S, Nakaoka T. Successful use of intraoperative ICG fluorescence lymphography and fibrin sealant with PGA felt for refractory chylous ascites in an infant: a novel procedure. Pediatr Int 2020; 62:862-863. [PMID: 32524702 DOI: 10.1111/ped.14190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/28/2020] [Accepted: 02/06/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Satoshi Yokoyama
- Department of Pediatirc Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama City, Wakayama, Japan
| | - Tatsuo Nakaoka
- Department of Pediatirc Surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama City, Wakayama, Japan
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8
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Yokoyama S, Nakaoka T, Nukada T, Ikeda Y, Hara S. Neonatal eosinophilic gastroenteritis mimicking hypertrophic pyloric stenosis. Pediatr Int 2020; 62:99-101. [PMID: 31997530 DOI: 10.1111/ped.14041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 07/19/2019] [Accepted: 09/25/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Satoshi Yokoyama
- Department of Pediatric surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Tatsuo Nakaoka
- Department of Pediatric surgery, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Takayuki Nukada
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Yuka Ikeda
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
| | - Shigeto Hara
- Department of Pediatrics, Japanese Red Cross Society, Wakayama Medical Center, Wakayama, Japan
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9
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Nakaoka T, Nishimoto S, Tsukazaki Y, Santo K, Higashio A, Kamiyama M, Uehara S, Yoneda A, Tanaka Y, Ichiba H. Ultrasound-guided hydrostatic enema for meconium obstruction in extremely low birth weight infants: a preliminary report. Pediatr Surg Int 2017; 33:1019-1022. [PMID: 28744798 DOI: 10.1007/s00383-017-4129-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] [Accepted: 07/21/2017] [Indexed: 11/26/2022]
Abstract
Meconium obstruction (MO) in extremely low birth weight (ELBW) infants is a challenging disease to treat. We performed ultrasound-guided hydrostatic enema on six ELBW infants diagnosed with MO. We consider this procedure to be safe and effective, and recommend it as a treatment for MO in ELBW infants.
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Affiliation(s)
- Tatsuo Nakaoka
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan.
| | - Satomi Nishimoto
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Yukino Tsukazaki
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Kenji Santo
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Atsushi Higashio
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Masafumi Kamiyama
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Shuichiro Uehara
- Department of Pediatric Surgery, Nihon University Hospital, 1-6, Kanda-Surugadai, Chiyoda-Ku, Tokyo, 101-8309, Japan
| | - Akihiro Yoneda
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Yuko Tanaka
- Department of Neonatology, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-Ku, Osaka, 534-0021, Japan
| | - Hiroyuki Ichiba
- Department of Neonatology, Osaka City General Hospital, 2-13-22, Miyakojimahondori, Miyakojima-Ku, Osaka, 534-0021, Japan
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10
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Ogihara MH, Ikeda H, Yamada N, Hikiba J, Nakaoka T, Fujimoto Y, Suzuki Y, Saito K, Mizoguchi A, Kataoka H. Identification of ecdysteroidogenic enzyme genes and their expression during pupal diapause in the cabbage armyworm, Mamestra brassicae. Insect Mol Biol 2017; 26:286-297. [PMID: 28121379 DOI: 10.1111/imb.12291] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this study, we identified ecdysteroidogenic enzymes in the cabbage armyworm, Mamestra brassicae, and demonstrated reduced expression of these genes during diapause. Some insects employ a temporary developmental arrest, diapause, to survive in severe environments. The titres of the moulting hormone ecdysteroid were reduced in diapause pupae of M. brassicae; therefore, ecdysteroidogenesis might be suppressed by a diapause-specific mechanism. To clarify expression changes of ecdysteroidogenic enzyme genes during diapause in M. brassicae, we first identified the genes for seven ecdysteroidogenic enzymes: Neverland, Non-molting glossy (Nm-g), CYP307A1 (Spook), CYP306A1 (Phantom), CYP302A1 (Disembodied), CYP315A1 (Shadow) and CYP314A1 (Shade). Enzymatic assays using heterologous expression in Drosophila Schneider 2 (S2) cells and analysis of mRNA distribution indicated that the identified genes were ecdysteroidogenic enzymes of M. brassicae. Expression levels of these ecdysteroidogenic enzyme genes were compared between prothoracic glands in different pupal stages throughout diapause. Immediately after pupation, diapause-destined pupae showed similar expression levels of ecdysteroidogenic enzyme genes to those of nondiapause pupae. All of these genes showed reduced gene expression after diapause initiation. Expression was immediately increased in diapause-destined pupae at the postdiapause quiescence phase. These results indicate that reduced expression of ecdysteroidogenic enzyme genes suppresses ecdysteroidogenesis and maintains developmental arrest during diapause.
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Affiliation(s)
- M H Ogihara
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - H Ikeda
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - N Yamada
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi, Japan
| | - J Hikiba
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - T Nakaoka
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Y Fujimoto
- Department of Chemistry and Materials Science, Tokyo Institute of Technology, Tokyo, Japan
| | - Y Suzuki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - K Saito
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - A Mizoguchi
- Division of Biological Science, Graduate School of Science, Nagoya University, Nagoya, Aichi, Japan
| | - H Kataoka
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
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11
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Ohno K, Nakaoka T, Takama Y, Higashio A, Santo K, Yoneda A. Implantable central venous access device in infants: Long-term results. Pediatr Int 2016; 58:1027-1031. [PMID: 26841252 DOI: 10.1111/ped.12945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 01/28/2016] [Accepted: 02/01/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND The management of central venous access device (CVAD) is extremely difficult in babies and small infants (BSI). We therefore compared the long-term results and complications of CVAD in BSI with those in children. METHODS One hundred and twenty patients were divided into two groups as follows: age <1 year or weight <10 kg (group A; 25 patients); and age ≧1 year and weight ≧10 kg (group B; 95 patients). The clinical results were retrospectively compared between the groups. RESULTS Mean age and weight were 12.5 ± 5.9 months and 8.2 ± 1.2 kg in group A, and 78.8 ± 58.9 months and 20.9 ± 13.6 kg in group B. Operation time was 57 ± 29 min in group A and 52 ± 21 min in group B (P = 0.38). The catheter was advanced with difficulty into the central vein in five and in 16 patients (P = 0.77), and surgical complications occurred in one and in seven patients in groups A and B, respectively (P > 0.99). The CVAD remained in place for 627 ± 494 and 550 ± 414 days (P = 0.47) and was removed before treatment completion in five and in 14 patients in groups A and B, respectively (P = 0.54). CONCLUSION The clinical results for CVAD in BSI did not differ from those in children. CVAD are useful and safe for the treatment of BSI with serious diseases.
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Affiliation(s)
- Koichi Ohno
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan. .,Department of Pediatric Surgery, Osaka Red Cross Hospital, Osaka, Japan.
| | - Tatsuo Nakaoka
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Yuichi Takama
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Atsushi Higashio
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Kenji Santo
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Akihiro Yoneda
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
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12
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Takama Y, Yoneda A, Nakamura T, Nakaoka T, Higashio A, Santo K, Kuki I, Kawawaki H, Tomiwa K, Hara J. Early Detection and Treatment of Neuroblastic Tumor with Opsoclonus-Myoclonus Syndrome Improve Neurological Outcome: A Review of Five Cases at a Single Institution in Japan. Eur J Pediatr Surg 2016; 26:54-9. [PMID: 26409265 DOI: 10.1055/s-0035-1564714] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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: 10/23/2022]
Abstract
INTRODUCTION Opsoclonus-myoclonus syndrome (OMS) is a paraneoplastic neurological disorder associated with neuroblastic tumor (NT) in childhood. Half of patients have neurological sequelae after the neurological and oncological treatment. We reviewed the neurological and oncological outcomes of NT with OMS, and discussed whether the treatment of NT would contribute to improving the neurological prognosis. METHODS We retrospectively assessed NT patients with OMS from January 2001 to December 2013 at a single institution in Japan. Demographic data, neurological and oncological status, histopathology, treatments, prognosis, and diagnosis and treatment timing were retrospectively reviewed from the records. The timings assessed were the interval between OMS onset and NT detection, initial NT therapy, and initial OMS therapy, the interval between NT therapy and OMS remission, and duration of OMS. RESULTS A total of 73 patients with NT were treated during the study period, and 5 of 73 patients were diagnosed as having NT with OMS. The median age at onset of OMS was 22 months (range, 18-30 months). The median age at detection of NT was 29 months (range, 21-33 months). Three of five cases showed no uptake on meta-iodobenzylguanidine scintigraphy. The tumor histopathology was neuroblastoma in two patients, ganglioneuroblastoma in two patients, and ganglioneuroma in one patient. Primary resection was performed in three cases. All patients survived. Two of five cases presented with atypical neurological symptoms without opsoclonus. The initial neurological therapy was started within a mean of 20 days (range, 3-76 days) from the onset of OMS in all cases. Four patients received intravenous immunoglobulin, and one with persistent neurological problems received rituximab. Neurological symptoms resolved in three cases. The mean interval between the onset of OMS and the detection of NT in case without neurological sequelae was 57 days (range, 25-113 days), while in case with neurological sequelae it was 365 days (range, 271-458 days). The mean interval between onset of OMS and initial therapy for NT in case without neurological sequelae was 88 days (range, 47-145 days), while in case with neurological sequelae it was 389 days (range, 292-486 days). CONCLUSION The interval between the onset of OMS and the detection and initial therapy of NT tended to be longer in patients with neurological sequelae than in those without neurological sequelae. This study suggested that early detection and treatment of NT with OMS might improve the neurological outcomes.
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Affiliation(s)
- Yuichi Takama
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Akihiro Yoneda
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Tetsuro Nakamura
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Tatsuo Nakaoka
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Atsushi Higashio
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Kenji Santo
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan
| | - Ichiro Kuki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Hisashi Kawawaki
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Kiyotaka Tomiwa
- Department of Pediatric Neurology, Osaka City General Hospital, Osaka, Japan
| | - Junichi Hara
- Department of Pediatric Hematology and Oncology, Osaka City General Hospital, Osaka, Japan
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Ohno K, Nakaoka T, Takama Y, Higashio A, Santo K, Yoneda A. Congenital urethrovaginal fistula associated with imperforate hymen causing fetal urinary ascites and abdominal cystic lesions: A case report and literature review. Journal of Pediatric Surgery Case Reports 2015. [DOI: 10.1016/j.epsc.2014.11.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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14
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Ono T, Ota A, Ito K, Nakaoka T, Karnan S, Konishi H, Furuhashi A, Hayashi T, Yamada Y, Hosokawa Y, Kazaoka Y. Plumbagin suppresses tumor cell growth in oral squamous cell carcinoma cell lines. Oral Dis 2015; 21:501-11. [PMID: 25580997 DOI: 10.1111/odi.12310] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 12/13/2014] [Accepted: 12/22/2014] [Indexed: 12/15/2022]
Abstract
OBJECTIVES Plumbagin (PL), a naturally occurring quinoid, exerts antitumoral effects in diverse types of cancer cells. However, the effect of PL on tumor cell proliferation in oral squamous cell carcinoma (OSCC) remains poorly understood. In this study, we assessed the efficacy of PL, in human OSCC cells. METHODS The effect of PL on the cell growth and apoptosis of OSCC cell lines was evaluated using MTT and Annexin V assays, respectively. The effect of PL on mitochondrial membrane potential loss and reactive oxygen species (ROS) generation was evaluated using flow cytometry analysis. RESULTS MTT assay showed that PL dose-dependently suppressed OSCC cell growth, with IC50 values ranging from 3.87 to 14.6 μM. Flow cytometry analysis revealed that PL treatment resulted in a significant decrease in mitochondrial membrane potential and an increase in the number of apoptotic cells. Notably, ROS generation was significantly elevated after PL treatment. Furthermore, a ROS scavenger, N-acetylcysteine (NAC), clearly suppressed the decrease in mitochondrial membrane potential, increase of caspase-3/7 activity, and apoptosis after PL treatment. CONCLUSION This study provides the considerable evidence of the tumor-suppressive effect of PL, thereby highlighting its therapeutic potential for OSCC treatment.
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Affiliation(s)
- T Ono
- Department of Oral and Maxillofacial Surgery, Aichi Medical University Hospital, Nagakute, Japan
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Kobayashi Y, Kariya T, Chishima J, Fujii K, Wada K, Baba S, Itoo T, Nakaoka T, Kawashima M, Saito S, Aoki N, Hayama S, Osa Y, Osada H, Niizuma A, Suzuki M, Uekane Y, Hayashi K, Kobayashi M, Ohtaishi N, Sakurai Y. Population trends of the Kuril harbour seal Phoca vitulina stejnegeri from 1974 to 2010 in southeastern Hokkaido, Japan. ENDANGER SPECIES RES 2014. [DOI: 10.3354/esr00553] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Ohno K, Nakamura T, Azuma T, Nakaoka T, Takama Y, Hayashi H, Horiike M, Zenitani M, Higashio A. Familial Currarino syndrome associated with Hirschsprung disease: two cases of a mother and daughter. J Pediatr Surg 2013; 48:233-8. [PMID: 23331821 DOI: 10.1016/j.jpedsurg.2012.10.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [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] [Received: 06/23/2012] [Revised: 10/12/2012] [Accepted: 10/26/2012] [Indexed: 01/08/2023]
Abstract
Currarino syndrome with Hirschsprung disease (CS-HD) is extremely rare. We present the first family with CS-HD. Case 1: A 28-year-old woman was admitted with severe abdominal distension and dyspnea. She was diagnosed with anal stenosis, hemisacrum, anterior sacral meningocele (ASM), tethered cord (TC), and short-segment aganglionosis. She underwent the modified Duhamel operation after meningocele repair and cord detethering. A bicornuate uterus, bilateral ovarian dermoid cysts, and small rectal duplication were also noted intraoperatively. Case 2: The daughter of case 1 was admitted for abdominal distension and anal stenosis at the age of 17 days. Studies revealed a hemisacrum, ASM, TC, presacral mass, atrial septal defect, polyp in the right nasal cavity, right vesicoureteral reflux, and short-segment aganglionosis. She underwent the modified Soave operation at the age of 1 year and 4 months after meningocele repair, cord detethering, and resection of the presacral mass (epidermoid cyst). In both cases, the aganglionic segments were confirmed by preoperative rectal suction biopsy and postoperative pathological examination on full-thickness rectal specimens. Some causal genes for Currarino syndrome (CS) and Hirschsprung disease (HD) are currently investigated. Thus far, 10 CS-HD cases have been reported, including 6 cases of familial CS. However, all the patients had sporadic HD. Recent reports suggest that anomalies of the enteric nerve system contribute to postoperative constipation in CS cases.
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Affiliation(s)
- Koichi Ohno
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan.
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17
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Miyazawa T, Takemoto K, Nakaoka T, Saito T, Hirose S, Sakuma Y, Yokoyama N, Arakawa Y. Effect of electronic structure on single-photon emission in InAs/InP quantum dot with quasi-resonant excitation. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/pssc.201000590] [Citation(s) in RCA: 2] [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: 11/06/2022]
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18
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Nakaoka T, Uemura S, Yoshida T, Tanimoto T, Shiokawa C, Harumoto K. Umbilical center insertion method for initial trocar placement in pediatric laparoscopic surgery. Osaka City Med J 2010; 56:21-26. [PMID: 21466126] [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: 05/30/2023]
Abstract
BACKGROUND For laparoscopic surgery in pediatric patients, the initial trocar insertion is usually made employing open laparotomy to avoid injury to the viscera. It is safe but somewhat time-consuming for establishing a pneumoperitoneum, and requires additional sutures for anchoring or preventing air leakage. We devised a new initial trocar insertion technique employing an umbilical center incision to shorten the surgical duration and improve the esthetic appearance. PATIENTS AND METHODS Four hundred and thirty-one pediatric patients were indicated for this umbilical center insertion method (UCM) at 2 pediatric surgical departments. Patients suspected of having umbilical lesions (except for umbilical hernia) or extensive bowel adhesions were excluded. RESULTS There was no complication associated with UCM. In almost all patients, a pneumoperitoneum was established within 1 minute. The wound was completely within the umbilical ring, and very satisfactory esthetically. DISCUSSION We consider UCM to be a safe and easy procedure, and acceptable method of initial trocar insertion for pediatric laparoscopic surgery.
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Affiliation(s)
- Tatsuo Nakaoka
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22 Miyakojimahondori, Miyakojima-ku, Osaka 534-0021, Japan.
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Nakaoka T, Uemura S, Yoshida T, Tanimoto T, Miyake H. Overgrowth of costal cartilage is not the etiology of pectus excavatum. J Pediatr Surg 2010; 45:2015-8. [PMID: 20920721 DOI: 10.1016/j.jpedsurg.2010.04.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [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] [Received: 02/09/2010] [Revised: 04/13/2010] [Accepted: 04/23/2010] [Indexed: 10/19/2022]
Abstract
PURPOSE The etiology of pectus excavatum (PE) has not been clarified. In 1944, Sweet (Sweet RH. Pectus excavatum. Ann Surg 1944;119:922-934) mentioned about the possibility of the overgrowth of costal cartilage being involved. However, no additional report that supports his hypothesis is available. In this study, we investigated whether the overgrowth of costal cartilage was an actual cause of PE through measurement of the costal cartilage length in PE patients and healthy controls. MATERIALS AND METHODS We investigated the length of the fifth and sixth costal cartilages and ribs in PE patients from reconstructed images of 3-dimensional computed tomography. To examine the relative costal cartilage length, we calculated the C/R ratio, defined as the quotient of the costal cartilage length divided by the adjacent rib length, and compared it between PE patients and healthy controls. RESULTS In PE patients, the C/R ratios were not larger than in healthy controls at any level. At the left sixth, the C/R ratio was significantly smaller in patients than in the healthy control group. DISCUSSION The results revealed that, in PE patients, relative costal cartilage lengths were not longer than in healthy controls. We conclude that the overgrowth of costal cartilage is not the etiology of PE.
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Affiliation(s)
- Tatsuo Nakaoka
- Department of Pediatric Surgery, Kawasaki Medical School, Kurashiki, Okayama pref. 534-0021, Japan.
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20
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Nakaoka T, Uemura S, Yano T, Nakagawa Y, Tanimoto T, Suehiro S. Does overgrowth of costal cartilage cause pectus excavatum? A study on the lengths of ribs and costal cartilages in asymmetric patients. J Pediatr Surg 2009; 44:1333-6. [PMID: 19573657 DOI: 10.1016/j.jpedsurg.2008.09.023] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [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] [Received: 07/04/2008] [Revised: 09/26/2008] [Accepted: 09/26/2008] [Indexed: 11/29/2022]
Abstract
PURPOSE The cause of pectus excavatum has been hypothesized to be overgrowth of the costal cartilage. According to this theory, the length of costal cartilages must be longer in the side of deep depression in asymmetric patients. To challenge this hypothesis, we measured the lengths of ribs and costal cartilages and investigated lateral differences. SUBJECTS AND METHODS Twenty-four adolescent and adult patients with asymmetric pectus excavatum (14-30 years of age) with no history of surgery were investigated in this study. The fifth and sixth ribs and costal cartilages were individually traced to measure their full lengths on 3-dimensional computed tomographic (CT) images. As an index of asymmetry, sternal rotation angle was measured in the chest CT images. Patients with a 21 degrees or greater angle of sternal twist were designated as an asymmetric group and those with an angle of smaller than 20 degrees as a symmetric group. Lateral differences in the fifth and sixth costal and costal cartilage lengths were compared between the groups. RESULTS On comparison of the costal and costal cartilage lengths in the asymmetric group, the right fifth ribs and costal cartilages were significantly shorter than the left (P = .02 and .03, respectively), and right sixth ribs were also significantly shorter than the left (P = .004), but right sixth costal cartilages were not (P = .31). In the symmetric group, the lengths of the left and right fifth ribs and costal cartilages were showing no significant difference (P = .20 and P = .80, respectively), and those of the sixth ribs and costal cartilage were also showing no significant difference (P = .97 and P = .64, respectively). DISCUSSION The ribs and costal cartilages on the right side with severer depression were significantly shorter or not different than those on the contralateral side. Based on these findings, the theory of costal cartilage overgrowth is contradictory. The etiology of asymmetric chest deformity should be reevaluated.
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Affiliation(s)
- Tatsuo Nakaoka
- Department of Pediatric Surgery, Kawasaki Medical School, 577 Matsushima, Kurashiki, Okayama, Japan.
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21
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Nakaoka T, Uemura S, Yano T, Tanimoto T, Miyake H, Kasahara S, Sano S. Successful reconstruction of communicating bronchopulmonary foregut malformation associated with laryngotracheoesophageal cleft. J Pediatr Surg 2009; 44:e29-32. [PMID: 19433157 DOI: 10.1016/j.jpedsurg.2009.02.061] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2008] [Revised: 02/09/2009] [Accepted: 02/11/2009] [Indexed: 11/19/2022]
Abstract
A full-term newborn male infant presented with dyspnea and cleft lip and palate. He was thought to have esophageal atresia with tracheoesophageal fistula. He underwent bronchoscopy before operation that showed a laryngotracheoesophageal cleft (LTEC) type III. The left main bronchus originated from the lower esophagus. His diagnosis was communicating bronchopulmonary foregut malformation (CBPFM) type IA associated with LTEC type III. Enhanced chest computed tomographic scan showed the left pulmonary artery originated from the descending aorta. Staged operations were indicated. At first, reconstruction of the left pulmonary artery was done at 3 months of age. Then at 6 months of age, operations for LTEC (tracheoplasty and esophagostomy) and CBPFM left bronchoplasty were performed. Reconstruction of esophagus was performed at age of 1 year. He is now 3 years old and doing well with a mild degree of bronchomalacia. This is the first report of total reconstruction of CBPFM type IA associated with LTEC.
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Affiliation(s)
- Tatsuo Nakaoka
- Department of Pediatric Surgery, Kawasaki Medical School, Kurasiki City, Okayama, Japan.
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22
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Abstract
BACKGROUND Objective assessment of the chest in patients with pectus excavatum after the Nuss procedure has not been published. This study evaluated the results of the Nuss procedure using computed tomographic (CT) index (CTi). METHODS We have performed the Nuss procedure in 382 patients since 1998, and 150 patients who underwent bar removal were included in this study. Computed tomographic scans were obtained before the Nuss procedure and after bar removal, and then preoperative CTi (pre-CTi) and postoperative CTi (post-CTi) were calculated. Computed tomographic scans of 62 age-matched patients without chest deformity were collected as controls. Patients were divided at 10 years of age into the younger and older groups, and groups with mild and severe deformity were defined using a pre-CTi value of 5 as border. These CT indices were compared and statistically analyzed. RESULTS Mean pre-CTi in all cases was 5.97 +/- 3.31 and improved to 3.08 +/- 0.64. Postoperative CTi was not significantly different from that of the control (2.47 +/- 0.32, P = .17). In the group with mild depression, pre-CTi was 4.15 +/- 0.62, and post-CTi was 2.88 +/- 0.50. Preoperative CTi in the group with severe deformity (7.44 +/- 3.82) improved to 3.25 +/- 0.69. Postoperative CTi values between the severe and mild groups were not significantly different (P = .75). Computed tomographic index of the young group improved from 6.20 +/- 3.58 to 2.93 +/- 0.49 and in older group from 5.50 +/- 2.64 to 3.40 +/- 0.79. These 2 post-CTi values were not significantly different (P = .73). CONCLUSION Postoperative CT scan could provide objective evaluation of sternal elevation. Mean CTi after the Nuss procedure was statically equivalent to that of the control cohort. Good sternal elevation can be achieved with the Nuss procedure regardless of the severity of chest depression or age.
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Affiliation(s)
- Yoshikiyo Nakagawa
- Department of Pediatric Surgery, Kawasaki Medical School, Kurashiki, Okayama 701-0192, Japan.
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23
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Abstract
An 8-year-old girl presented with abdominal tumor that was discovered incidentally. At surgery, the tumor originated from the retroperitoneal sympathetic trunk; and the histologic diagnosis was ganglioneuroblastoma, nodular (GNBn), unfavorable histology on Shimada's classification, International Neuroblastoma Staging System (INSS) stage 1. This patient was found positive for neuroblastoma (NB) by mass screening at 6 months old. There was no tumor detected, and tumor markers decreased to normal range by 18 months of age. We examined her previous computed tomographic films retrospectively and noticed a mass in the same region indicating that the tumor had been there for 8 years without treatment. This is the first report of infantile mass screening-positive NB appearing after long-term follow-up with unfavorable histology. And the follow-up interval was the longest ever reported. This case is suggestive of considering the natural history and treatment strategies for infantile NBs, and the relationship between infantile NB and ganglioneuroblastoma, nodular. It is important to follow mass screening-positive cases of NB over the long term if wait-and-see policy is adopted.
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Affiliation(s)
- Tatsuo Nakaoka
- Department of Pediatric Surgery, Kawasaki Medical School, Kurasiki City, Okayama 701-0192, Japan.
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24
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Krenner HJ, Clark EC, Nakaoka T, Bichler M, Scheurer C, Abstreiter G, Finley JJ. Optically probing spin and charge interactions in a tunable artificial molecule. Phys Rev Lett 2006; 97:076403. [PMID: 17026254 DOI: 10.1103/physrevlett.97.076403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2006] [Indexed: 05/12/2023]
Abstract
We optically probe and electrically control a single artificial molecule containing a well defined number of electrons. Charge and spin dependent interdot quantum couplings are probed optically by adding a single electron-hole pair and detecting the emission from negatively charged exciton states. Coulomb- and Pauli-blockade effects are directly observed, and tunnel coupling and electrostatic charging energies are independently measured. The interdot quantum coupling is shown to be mediated by electron tunneling. Our results are in excellent accord with calculations that provide a complete picture of negative excitons and few-electron states in quantum dot molecules.
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Affiliation(s)
- H J Krenner
- Walter Schottky Institut and Physik Department, Technische Universität München, Am Coulombwall 3, D-85748 Garching, Germany
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Ohno K, Morotomi Y, Harumoto K, Ueda M, Nakahira M, Nakamura T, Azuma T, Moriuchi T, Yoshida T, Shiokawa C, Nakaoka T. Preliminary study on the effects of bar placement on the thorax after the nuss procedure for pectus excavatum using bone scintigraphy. Eur J Pediatr Surg 2006; 16:155-9. [PMID: 16909352 DOI: 10.1055/s-2006-924309] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
AIM Bone scintigraphy was performed to elucidate the effects of the Nuss procedure for pectus excavatum on the bony thorax. METHODS Eight boys and 6 girls (5 - 24 years of age) underwent bone scintigraphy, using (99m)Tc-HMDP. Eleven patients were studied 5 to 21 days after the Nuss procedure; 6 were studied 20 to 24 months after the operation before bar removal. Three of 14 were studied twice after the Nuss procedure and before bar removal. RESULTS In the early postoperative phase, RI accumulation was found at the sternum and ribs in only 1 of 6 patients under 9 years of age, whereas in all 5 older patients, RI had accumulated at the sternum. Scintigrams before bar removal revealed, regardless of age, hot spots at the lateral ribs in contact with the bar and at the costochondral junctions where the bar passed through the intercostal spaces. Furthermore, chest roentgenograms showed the deformed lateral ribs in contact with the bar. CONCLUSIONS The Nuss procedure creates minute fractures at the sternum and the ribs, especially in older patients. The bar deforms the ribs and restrains the growth of the thorax. Furthermore, it constantly rubs against the ribs and can therefore cause late complications. Bone scintigraphy may determine the appropriate timing for bar removal.
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Affiliation(s)
- K Ohno
- Department of Pediatric Surgery, Osaka City General Hospital, Osaka, Japan.
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26
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Ohno K, Morotomi Y, Nakahira M, Takeuchi S, Shiokawa C, Moriuchi T, Harumoto K, Nakaoka T, Ueda M, Yoshida T, Yamada H, Tsujimoto K, Kinoshita H. Indications for surgical repair of funnel chest based on indices of chest wall deformity and psychological state. Surg Today 2004; 33:662-5. [PMID: 12928841 DOI: 10.1007/s00595-003-2575-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2002] [Accepted: 01/21/2003] [Indexed: 10/26/2022]
Abstract
PURPOSE We examined the surgical indications for funnel chest, taking psychological factors into consideration. METHODS We assessed 36 young people with funnel chest who were seen as outpatients, including 31 boys and 5 girls aged from 1 to 22 years old. Respondents were asked whether they suffered psychological distress, and if they wanted surgery. The severity of the deformity was evaluated using the Vertebral Index (VI) and the Frontosagittal Index (FSI) calculated from chest roentgenograms. RESULTS The VI in 11 patients without distress (23.7 +/- 4.1) was lower than that in 25 patients with distress (32.8 +/- 8.2), and the FSI in the patients without distress (33.5 +/- 5.3) was higher than that in the patients with distress (23.6 +/- 8.6). The VI in 19 patients who did not want surgery (26.9 +/- 7.9) was lower than that in 17 patients who did (33.5 +/- 7.5), and the FSI in the patients who did not want surgery (30.4 +/- 8.1) was higher than that in the patients who did (22.4 +/- 8.1). The distressed patients suffered many psychological problems, such as being the object of bullying. CONCLUSION The severity of the deformity affected the patient's psychological state. We consider that a VI >28 or an FSI <28 are indications for surgery, based on the mean VI + SD and the mean FSI-SD of patients not suffering distress.
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Affiliation(s)
- Koichi Ohno
- Second Department of Surgery, Osaka City University Medical School, 1-4-3 Asahi-machi, Abeno-ku, Osaka 545-8585, Japan
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27
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Ohno K, Morotomi Y, Ueda M, Yamada H, Shiokawa C, Nakaoka T, Tsujimoto K, Nakahira M, Moriuchi T, Harumoto K, Yoshida T. Comparison of the Nuss procedure for pectus excavatum by age and uncommon complications. Osaka City Med J 2003; 49:71-6. [PMID: 15179835] [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: 04/29/2023]
Abstract
BACKGROUND We summarized our experience of the Nuss procedure for pectus excavatum with comparison by age and uncommon complications. METHODS Twenty-three patients underwent the Nuss procedure. Their age ranged from 3 to 19 years old. The outcome was compared between two groups divided by age: teenagers (> or = 13 yrs old, n = 5, Group 1) and younger patients (n = 18, Group 2). RESULTS Cosmetic results were significantly better, and the operating time and postoperative hospital stay in Group 2 were significantly shorter than in Group 1. Complications were more frequently seen in Group 1 than in Group 2. In all three younger patients whose bars were removed after 2 years, the ribs holding the bar were deformed. Uncommon complications occurred in two cases. In one case, pneumothorax occurred due to laceration by a fragment of wire after 12 months, and the fragment fell into the thoracic cavity. In another case, pneumothorax occurred due to injury by the port of a thin thoracoscope. CONCLUSION The teenaged patients had more complications and poorer cosmetic results. Therefore, this operation should be performed before the teenage years. In younger patients with rapid growth, the bar should be removed less than 2 years to prevent restriction of costal growth.
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Affiliation(s)
- Koichi Ohno
- Department of Pediatric Surgery, Osaka City University Medical School, 1-4-3 Asahimachi, Abeno-ku, Osaka 545-8585, Japan.
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28
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Azuma T, Nakamura T, Nakahira M, Harumoto K, Nakaoka T, Moriuchi T. Pre-operative ultrasonographic diagnosis of biliary atresia--with reference to the presence or absence of the extrahepatic bile duct. Pediatr Surg Int 2003; 19:475-7. [PMID: 12750934 DOI: 10.1007/s00383-003-0962-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/13/2002] [Indexed: 10/26/2022]
Abstract
Our aim was to evaluate the efficacy of ultrasonographic (US) examination in the pre-operative diagnosis of biliary atresia (BA) with special reference to the presence or absence of extrahepatic bile duct. Thirty consecutive neonates and infants aged 8 to 169 days (mean: 62 days) suspected of having biliary atresia were examined pre-operatively in real time B-mode ultrasonography. We used a 5 or 7.5 MHz probe of micro convex type. Patients were fasted and sedatives administered. When the common bile duct was absent, we considered it a positive finding for BA diagnosis; if not, it was considered a negative finding. A definitive diagnosis of BA was confirmed at surgery by gross morphology or intra-operative cholangiography. US findings had a sensitivity of 83% (19 of 23 BA patients), a specificity of 71% (5% of 7 non BA patients) and an accuracy rate of 80%. The positive predictive value was 90% (19 of 21), while the negative predictive value was 56% (5 of 9). There were four false-negative cases. Two were BA cases with patent distal common bile duct, one was BA in which the hepatic artery was determined to be the common bile duct, and the other was a subtype of extrahepatic bile duct dilatation (the so-called, "correctable type"). We employed US criteria for visualization of the extrahepatic bile duct for pre-operative diagnosis of BA. US examination referring to the presence or absence of the extrahepatic bile duct is an effective and useful method for clinical survey.
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Affiliation(s)
- Takashi Azuma
- Department of Pediatric Surgery, Osaka City General Hospital, 2-13-22 Miyakojimahondori, Miyakojima-ku, 534-0021, Osaka, Japan.
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29
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Kakitsuka T, Saito T, Nakaoka T, Arakawa Y, Ebe H, Sugawara M, Yoshikuni Y. Numerical analysis of transition energy shift in InAs/GaAs quantum dots induced by strain‐reducing layers. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pssc.200303026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- T. Kakitsuka
- NTT Photonics Laboratories, NTT Corporation, 3‐1, Morinosato Wakamiya, Atsugi, Kanagawa 243‐0198, Japan
| | - T. Saito
- RCAST, IIS, CCR, University of Tokyo, 4‐6‐1, Komaba, Meguro‐ku, Tokyo 153‐8904, Japan
| | - T. Nakaoka
- RCAST, IIS, CCR, University of Tokyo, 4‐6‐1, Komaba, Meguro‐ku, Tokyo 153‐8904, Japan
| | - Y. Arakawa
- NTT Photonics Laboratories, NTT Corporation, 3‐1, Morinosato Wakamiya, Atsugi, Kanagawa 243‐0198, Japan
- RCAST, IIS, CCR, University of Tokyo, 4‐6‐1, Komaba, Meguro‐ku, Tokyo 153‐8904, Japan
| | - H. Ebe
- Fujitsu Laboratories Ltd., 10‐1, Morinosato Wakamiya, Atsugi, Kanagawa 243‐0197, Japan
| | - M. Sugawara
- Fujitsu Laboratories Ltd., 10‐1, Morinosato Wakamiya, Atsugi, Kanagawa 243‐0197, Japan
| | - Y. Yoshikuni
- NTT Photonics Laboratories, NTT Corporation, 3‐1, Morinosato Wakamiya, Atsugi, Kanagawa 243‐0198, Japan
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30
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Watanabe T, Akishita M, Nakaoka T, Miyahara Y, Aburatani H, Yoshizumi M, Kozaki K, Ouchi Y. 3P-0669 Identification of estrogen-regulated genes in vascular smooth muscle cells. ATHEROSCLEROSIS SUPP 2003. [DOI: 10.1016/s1567-5688(03)90888-9] [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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31
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Ohno K, Nakahira M, Takeuchi S, Shiokawa C, Moriuchi T, Harumoto K, Nakaoka T, Ueda M, Yoshida T, Tsujimoto K, Kinoshita H. Indications for surgical treatment of funnel chest by chest radiograph. Pediatr Surg Int 2001; 17:591-5. [PMID: 11727046 DOI: 10.1007/s003830100000] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [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] [Accepted: 07/25/2000] [Indexed: 11/30/2022]
Abstract
Forty-seven children with funnel chest (FC) who underwent sternal elevation and 210 normal children were examined to determine the indications for surgical treatment using the vertebral index (VI) and frontosagittal index (FSI). In normal children VI gradually increased and FSI gradually decreased with age. Both indices changed significantly at 3 years of age. Although the VI of FC patients decreased significantly from 33.8 +/- 7.6 (n=40) to 24.4 +/- 3.9 (n=38) postoperatively (P < 0.0001), it was significantly larger than that of normal children over 3 years of age (20.2 +/- 2.2, n=150) (P < 0.0001), and although the FSI of FC patients increased significantly from 22.0 +/- 7.0 (n=40) to 34.5 +/- 6.5 (n=38) postoperatively (P < 0.0001), it was significantly smaller than that of normal children over 3 years of age (41.1 +/- 4.0, n=150) (P < 0.0001). Since many patients had a thin and flat chest despite excellent correction, their postoperative indices were not normal. There was a correlation between VI and FSI in normal children and a high degree of correlation between VI and FSI both before and after operation in FC patients. We conclude that a VI of more than 27 and/or a FSI of less than 29 are indications for surgical treatment based on the mean VI + 3SD and FSI - 3SD of normal children over 3 years of age. These values are almost equal to the mean VI - SD and FSI + SD of patients with physical, cosmetic, and/or psychological disturbances. However, it is not necessary to measure both indices simultaneously. Postoperative VI and FSI did not always reflect the degree of chest-wall depression in FC patients because of their flat chests.
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Affiliation(s)
- K Ohno
- Second Department of Surgery, Osaka City University Medical School, 1-4-3 Asahi-machi, Abeno-ku, Osaka, 545-8585, Japan
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32
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Watanabe T, Yoshizumi M, Akishita M, Eto M, Toba K, Hashimoto M, Nagano K, Liang YQ, Ohike Y, Iijima K, Sudoh N, Kim S, Nakaoka T, Yamashita N, Ako J, Ouchi Y. Induction of nuclear orphan receptor NGFI-B gene and apoptosis in rat vascular smooth muscle cells treated with pyrrolidinedithiocarbamate. Arterioscler Thromb Vasc Biol 2001; 21:1738-44. [PMID: 11701459 DOI: 10.1161/hq1101.098550] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [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: 11/16/2022]
Abstract
NGFI-B is one of the orphan nuclear receptors, and its gene is implicated in the apoptosis of T cells. The aim of this study was to investigate the expression and the role of NGFI-B in vascular smooth muscle cells (VSMCs). Pyrrolidinedithiocarbamate (PDTC) is a modulator of an oxidative state and is reported to induce apoptosis only when the density of VSMCs is low. Under low VSMC density (10 000 cells/cm(2)), addition of PDTC (0.1 to 10 micromol/L) caused apoptosis of VSMCs, which was confirmed by Hoechst 33258 staining under fluorescence microscopy. At low VSMC density, expression of NGFI-B mRNA was induced 1 hour after the addition of PDTC, peaking at 6 hours, and persisted for up to 12 hours. The protein level of NGFI-B was increased 4 hours after PDTC addition and persisted for up to 12 hours. Under low VSMC density, PDTC-induced expression of NGFI-B mRNA was correlated with the magnitude of apoptosis, which was quantified by enzyme immunoassay for histone-associated DNA fragments. In contrast, when the density of VSMCs was high (50 000 cells/cm(2)), PDTC did not induce apoptosis, and the expression of NGFI-B was only transient. This transient expression pattern was also seen when VSMCs were treated with phorbol ester, calcium ionophore, hydrogen peroxide, or angiotensin II, even at low cell density. We next investigated whether the NGFI-B gene may act as a transcription factor under treatment with PDTC by measuring the promoter activity of luciferase reporter plasmids that contained typical NGFI-B-responsive elements. The PDTC-induced transcriptional activity of NGFI-B was 2-fold higher at low cell density than at high cell density. These data demonstrate that NGFI-B can be induced in VSMCs and suggest that NGFI-B may play a role in PDTC-induced VSMC apoptosis.
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MESH Headings
- Animals
- Antioxidants/pharmacology
- Apoptosis
- Cell Culture Techniques/methods
- Cell Nucleus/ultrastructure
- Cells, Cultured
- DNA-Binding Proteins/biosynthesis
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/physiology
- Kinetics
- Male
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/ultrastructure
- Nuclear Receptor Subfamily 4, Group A, Member 1
- Pyrrolidines/pharmacology
- RNA, Messenger/biosynthesis
- Rats
- Rats, Sprague-Dawley
- Receptors, Cytoplasmic and Nuclear
- Receptors, Steroid
- Response Elements
- Thiocarbamates/pharmacology
- Transcription Factors/biosynthesis
- Transcription Factors/genetics
- Transcription Factors/physiology
- Transcriptional Activation
- Transfection
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Affiliation(s)
- T Watanabe
- Department of Geriatric Medicine, Graduate School of Medicine, University of Tokyo, Japan
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Mjaatvedt CH, Nakaoka T, Moreno-Rodriguez R, Norris RA, Kern MJ, Eisenberg CA, Turner D, Markwald RR. The outflow tract of the heart is recruited from a novel heart-forming field. Dev Biol 2001; 238:97-109. [PMID: 11783996 DOI: 10.1006/dbio.2001.0409] [Citation(s) in RCA: 392] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
As classically described, the precardiac mesoderm of the paired heart-forming fields migrate and fuse anteriomedially in the ventral midline to form the first segment of the straight heart tube. This segment ultimately forms the right trabeculated ventricle. Additional segments are added to the caudal end of the first in a sequential fashion from the posteriolateral heart-forming field mesoderm. In this study we report that the final major heart segment, which forms the cardiac outflow tract, does not follow this pattern of embryonic development. The cardiac outlet, consisting of the conus and truncus, does not derive from the paired heart-forming fields, but originates separately from a previously unrecognized source of mesoderm located anterior to the initial primitive heart tube segment. Fate-mapping results show that cells labeled in the mesoderm surrounding the aortic sac and anterior to the primitive right ventricle are incorporated into both the conus and the truncus. Conversely, if cells are labeled in the existing right ventricle no incorporation into the cardiac outlet is observed. Tissue explants microdissected from this anterior mesoderm region are capable of forming beating cardiac muscle in vitro when cocultured with explants of the primitive right ventricle. These findings establish the presence of another heart-forming field. This anterior heart-forming field (AHF) consists of mesoderm surrounding the aortic sac immediately anterior to the existing heart tube. This new concept of the heart outlet's embryonic origin provides a new basis for explaining a variety of gene-expression patterns and cardiac defects described in both transgenic animals and human congenital heart disease.
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Affiliation(s)
- C H Mjaatvedt
- Department of Cell Biology and Anatomy, Medical University of South Carolina, 171 Ashley Avenue, Charleston, South Carolina 29425, USA.
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34
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Inazawa T, Tanabe T, Yamada H, Nakaoka T, Hashimoto Y, Yamasaki T, Kotaki H, Tani K, Asano S, Yamashita N. Glucocorticoid-regulated expression of exogenous human growth hormone gene in rats. Mol Ther 2001; 4:267-72. [PMID: 11545618 DOI: 10.1006/mthe.2001.0438] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this study was to control in vitro and in vivo expression of the growth hormone (GH) gene using a glucocorticoid-sensitive promoter, the mouse mammary tumor virus long terminal repeat (MMTV LTR). We inserted the cDNA encoding the 20-kDa form of human GH (20K-GH) downstream of the MMTV LTR of plasmid pMSG, and used lipofection to transfer it to 3Y1 cells together with plasmid pMX, which contains a puromycin-resistant element. The secretion of GH from the selected transformants was dose-dependently augmented by the application of hydrocortisone, corticosterone, or dexamethasone, among which dexamethasone was the most potent. Analysis of the time course showed that 20K-GH secretion began to increase within 2 hours after the addition of glucocorticoid and reached a maximal level of about threefold over the unstimulated control at 3 hours; secretion then gradually declined and returned to near basal levels at 19 hours. Repeated glucocorticoid application led to repeated increases in GH secretion. When GH-producing cells were microcapsulated and transplanted into the abdominal cavities of rats, 20K-GH was detected in the plasma under control conditions and increased about 3.3-fold after administration of dexamethasone. We suggest that GH expression driven by the MMTV LTR promoter may be under the control of an endogenous glucocorticoid in vivo.
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Affiliation(s)
- T Inazawa
- Department of Advanced Medical Science, The Institute of Medical Science, University of Tokyo, 4-6-1 Shirokanedai, Minato-ku, Tokyo, 108-8639, Japan.
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35
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Ogita T, Hashimoto E, Yamasaki M, Nakaoka T, Matsuoka R, Kira Y, Fujita T. Hypoxic induction of adrenomedullin in cultured human umbilical vein endothelial cells. J Hypertens 2001; 19:603-8. [PMID: 11327636 DOI: 10.1097/00004872-200103001-00013] [Citation(s) in RCA: 35] [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: 11/25/2022]
Abstract
OBJECTIVES The current study evaluated the hypoxic induction of adrenomedullin gene expression and secretion, and its mechanism in cultured human umbilical vein endothelial cells (HUVEC). METHODS HUVEC were exposed to hypoxia or normoxia as controls for 1 to 24 h. Using Northern blot analysis and a radioimmunoassay, we evaluated adrenomedullin expression in HUVEC. The transcriptional component of adrenomedullin gene regulation was assessed by nuclear run-off experiments, and adrenomedullin mRNA half-life was measured by actinomycin D experiments. RESULTS We found that hypoxic conditions (1-3% oxygen) significantly increased adrenomedullin mRNA and protein in HUVEC. This increase was inversely proportional to oxygen tension and was reversible upon re-exposure to a 21% oxygen environment Nuclear run-off experiments revealed the enhanced transcriptional rate of adrenomedullin gene. Next, actinomycin D experiments revealed the enhanced adrenomedullin mRNA stability. CONCLUSIONS These results indicate that hypoxia increases adrenomedullin gene expression and secretion in HUVEC by transcriptional and post-transcriptional mechanisms. Hypoxic induction of adrenomedullin may play a pathophysiological role in the vascular systems.
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Affiliation(s)
- T Ogita
- Department of Internal Medicine, School of Medicine, University of Tokyo, Japan.
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36
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Nakaoka T, Sakaguchi A, Matsuura H, Itoh K. Transcranial contrast-enhanced US appearance of cystic glioma. Report of a case studied with pulse-inversion harmonic imaging. Radiol Med 2001; 101:93-5. [PMID: 11360762] [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: 04/16/2023]
Affiliation(s)
- T Nakaoka
- Department of Neurosurgery, Saitarna Neurosurgical Institute, 664-1 Kamiya, Kounosu-shi, Saitama-ken, Japan.
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37
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Gonda K, Nakaoka T, Yoshimura K, Otawara-Hamamoto Y, Harrii K. Heterotopic ossification of degenerating rat skeletal muscle induced by adenovirus-mediated transfer of bone morphogenetic protein-2 gene. J Bone Miner Res 2000; 15:1056-65. [PMID: 10841174 DOI: 10.1359/jbmr.2000.15.6.1056] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/18/2022]
Abstract
In vivo gene transfer is a recently developed device for efficient delivery of a therapeutic recombinant protein. We formulated the hypothesis that a high level of expression of bone morphogenetic protein 2 (BMP-2) could be a future therapeutic modality in terms of inducing substantial bone formation in vivo. First, to test this hypothesis, adenoviruses carrying BMP-2 gene were directly injected into the soleus muscle of adult rat. The BMP-2 gene was successfully overexpressed in the target muscle by adenovirus-mediated transfer, whereas bone formation in and around the muscle failed to occur in this case. Second, to recruit putative osteoprogenitor cells, we then induced ischemic degeneration of the target muscle by orthotopically grafting it simultaneously with the gene transfer. The combination of BMP-2 gene transfer and orthotopic muscle grafting resulted in successful ossification of almost the whole grafted muscle, whereas neither muscle grafting alone nor the combination of muscle grafting and adenovirus-mediated transfer of reporter gene LacZ induced any bone formation in the muscle. The ossification process was evident by positive von Kossa staining of the histological sections and roentgenographical radio-opacity of the region. It was also found that the BMP-2 transgene overexpressed in grafted muscles inhibited muscle regeneration, which should otherwise follow the muscle degeneration. We further demonstrated an up-regulation of BMP receptor type IA in grafted muscles, suggesting its involvement in the bone-formation process. In conclusion, overexpression of BMP-2 gene induced massive heterotopic ossification in skeletal muscles under graft-induced ischemic degeneration, which possibly up-regulates osteoprogenitor cells in situ.
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Affiliation(s)
- K Gonda
- Department of Plastic and Reconstructive Surgery, Faculty of Medicine, The University of Tokyo, Japan
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38
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Nakaoka T, Kanma H, Matsuura H. [A case of rete mirabile with congenital dysplasia of bilateral internal carotid arteries]. No Shinkei Geka 2000; 28:161-6. [PMID: 10666736] [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: 02/15/2023]
Abstract
We report a case of dysplasia of the congenital bilateral internal carotid arteries with the rete mirabile. The rete mirabile is not usually seen in the course of human growth, but it is a common finding in other mammals. Accordingly, some investigators have thought that the rete mirabile is "developmental shift". Our case has dysplasia of the bilateral internal carotid arteries (one is aplasia and the other is hypoplasia), but the patient had suffered from no ischemic symptom because her brain had been sufficiently fed by each of the rete mirabile. Angiographically, the frequency of the rete mirabile formation is about 1/10,000. There were 20 cases reported until 1997 (including our case). There were 5 cases (27.8%) with ischemic symptoms in spite of internal carotid artery dysplasia, 2 cases (11.1%) with intracerebral hemorrhage, 6 cases (33.3%) with subarachnoid hemorrhage (there were only two cases with aneurysm) and 5 cases without symptoms. We have tried to class the rete mirabile by angiographical findings. One is the M type finding resembling moyamoya vessels in stages 3 & 4 of moyamoya disease, and the other is the N type finding resembling a nidus of arteriovenous malformation. M type occurred in younger patients more often than N type, so M type may be the previous stage of N type.
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Affiliation(s)
- T Nakaoka
- Department of Neurosurgery, Nasunogahara Kanma Hospital, Tochigi, Japan
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39
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Monzen K, Shiojima I, Hiroi Y, Kudoh S, Oka T, Takimoto E, Hayashi D, Hosoda T, Habara-Ohkubo A, Nakaoka T, Fujita T, Yazaki Y, Komuro I. Bone morphogenetic proteins induce cardiomyocyte differentiation through the mitogen-activated protein kinase kinase kinase TAK1 and cardiac transcription factors Csx/Nkx-2.5 and GATA-4. Mol Cell Biol 1999; 19:7096-105. [PMID: 10490646 PMCID: PMC84704 DOI: 10.1128/mcb.19.10.7096] [Citation(s) in RCA: 194] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Bone morphogenetic proteins (BMPs) have been shown to induce ectopic expression of cardiac transcription factors and beating cardiomyocytes in nonprecardiac mesodermal cells in chicks, suggesting that BMPs are inductive signaling molecules that participate in the development of the heart. However, the precise molecular mechanisms by which BMPs regulate cardiac development are largely unknown. In the present study, we examined the molecular mechanisms by which BMPs induce cardiac differentiation by using the P19CL6 in vitro cardiomyocyte differentiation system, a clonal derivative of P19 embryonic teratocarcinoma cells. We established a permanent P19CL6 cell line, P19CL6noggin, which constitutively overexpresses the BMP antagonist noggin. Although almost all parental P19CL6 cells differentiate into beating cardiomyocytes when treated with 1% dimethyl sulfoxide, P19CL6noggin cells did not differentiate into beating cardiomyocytes nor did they express cardiac transcription factors or contractile protein genes. The failure of differentiation was rescued by overexpression of BMP-2 or addition of BMP protein to the culture media, indicating that BMPs were indispensable for cardiomyocyte differentiation in this system. Overexpression of TAK1, a member of the mitogen-activated protein kinase kinase kinase superfamily which transduces BMP signaling, restored the ability of P19CL6noggin cells to differentiate into cardiomyocytes and concomitantly express cardiac genes, whereas overexpression of the dominant negative form of TAK1 in parental P19CL6 cells inhibited cardiomyocyte differentiation. Overexpression of both cardiac transcription factors Csx/Nkx-2.5 and GATA-4 but not of Csx/Nkx-2.5 or GATA-4 alone also induced differentiation of P19CL6noggin cells into cardiomyocytes. These results suggest that TAK1, Csx/Nkx-2.5, and GATA-4 play a pivotal role in the cardiogenic BMP signaling pathway.
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Affiliation(s)
- K Monzen
- Department of Cardiovascular Medicine, University of Tokyo Graduate School of Medicine, Tokyo 113-8655, Japan
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40
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Deguchi J, Makuuchi M, Nakaoka T, Collins T, Takuwa Y. Angiotensin II stimulates platelet-derived growth factor-B chain expression in newborn rat vascular smooth muscle cells and neointimal cells through Ras, extracellular signal-regulated protein kinase, and c-Jun N-terminal protein kinase mechanisms. Circ Res 1999; 85:565-74. [PMID: 10506481 DOI: 10.1161/01.res.85.7.565] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [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: 01/09/2023]
Abstract
Platelet-derived growth factors (PDGFs) have been implicated in the pathogenesis of vascular proliferative disorders. Vascular smooth muscle cells (VSMCs) are one of the cell types that produce PDGF-B chain in proliferative lesions, although the mechanism of regulation of PDGF-B chain production in these cells is not well understood. In the present study, we demonstrate that angiotensin II (Ang II), which is also implicated in vascular stenosis after angioplasty and atherosclerosis, markedly stimulates PDGF-B chain mRNA expression in cultured newborn rat medial VSMCs and neointimal VSMCs via an AT(1), but not in adult rat VSMCs. In newborn rat VSMCs, Ang II activates extracellular signal-regulated protein kinase (ERK), c-Jun N-terminal protein kinase (JNK), and p38 mitogen-activated protein kinase. The mitogen-activated protein/ERK (MEK) inhibitor PD98059, but not the p38 inhibitor SB203580, abrogates Ang II-induced PDGF-B mRNA expression. Transient transfection analysis using a PDGF-B promoter-luciferase gene reporter construct reveals that Ang II induces transcriptional activation of PDGF-B chain gene, which is abolished by the expression of a dominant negative form of either ERK or JNK, but not of p38. The expression of a dominant negative form of Ras abolishes the stimulatory effects of Ang II on ERK activity and PDGF-B mRNA expression. In adult rat VSMCs, Ang II activates ERK and JNK, but weakly induces Egr-1, a transcription factor implicated in PDGF-B chain gene expression, compared with newborn VSMCs. These data indicate that Ang II activates PDGF-B chain gene expression in VSMCs through mechanisms involving Ras-ERK and JNK.
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MESH Headings
- Aging/metabolism
- Angiotensin II/pharmacology
- Animals
- Animals, Newborn/physiology
- Calcium-Calmodulin-Dependent Protein Kinases/physiology
- Cells, Cultured
- DNA/biosynthesis
- DNA-Binding Proteins/metabolism
- Early Growth Response Protein 1
- Gene Expression
- Genes, ras/physiology
- Immediate-Early Proteins
- JNK Mitogen-Activated Protein Kinases
- Male
- Mitogen-Activated Protein Kinases
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/physiology
- Platelet-Derived Growth Factor/genetics
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins c-sis
- RNA, Messenger/metabolism
- Rats
- Rats, Wistar
- Receptor, Angiotensin, Type 1
- Receptor, Angiotensin, Type 2
- Receptors, Angiotensin/genetics
- Transcription Factors/metabolism
- Tunica Intima/cytology
- Tunica Intima/physiology
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Affiliation(s)
- J Deguchi
- Department of Molecular and Cellular Physiology, Graduate School of Medicine, University of Tokyo, Japan
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41
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Deguchi J, Namba T, Hamada H, Nakaoka T, Abe J, Sato O, Miyata T, Makuuchi M, Kurokawa K, Takuwa Y. Targeting endogenous platelet-derived growth factor B-chain by adenovirus-mediated gene transfer potently inhibits in vivo smooth muscle proliferation after arterial injury. Gene Ther 1999; 6:956-65. [PMID: 10455397 DOI: 10.1038/sj.gt.3300918] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.6] [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: 02/02/2023]
Abstract
Platelet-derived growth factor (PDGF), especially its B chain, has been implicated in the pathogenesis of vascular proliferative disorders such as atherosclerosis and restenosis after angioplasty. We constructed a replication-deficient recombinant adenovirus containing the gene encoding the extracellular region of PDGF beta-receptor (PDGFXR) that binds PDGF-B chain and acts as its antagonist. The administration into balloon-injured rat carotid arteries of an adenovirus containing the Escherichia coli lacZ gene as a marker gene at 5 days after injury markedly facilitated efficacy of gene transfer, as compared with its administration immediately after injury. Adenovirus-mediated gene transfer of PDGFXR into injured arteries performed at 5 days resulted in a more than 50% reduction in the neointimal area of injured arteries at 14 days. In contrast, the administration of control adenoviruses containing lacZ gene or containing no foreign gene was without suppressive effects on neointima formation. The inhibition of neointima formation by the expression of PDGFXR was accompanied by a reduction in bromodeoxyuridine-labeled cells and nearly complete inhibition of tyrosine phosphorylation of both alpha- and beta-receptors for PDGF, but not of epidermal growth factor receptor, in injured arteries. This is the first report to indicate the usefulness of targeting a growth factor by expressing an extracellular binding region of a receptor using an adenovirus for the treatment of vascular proliferative disorders, and provide direct evidence that PDGF-B chain plays an essential role in neointimal formation.
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Affiliation(s)
- J Deguchi
- Department of Cardiovascular Biology, Cancer Chemotherapy Center, Cancer Institute, Tokyo, Japan
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42
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Ohmori K, Kishi M, Nakaoka T, Miyata N. Synergistic effect of naphthoquinones on the mutagenicity of nitroarene. Biol Pharm Bull 1999; 22:90-2. [PMID: 9989670 DOI: 10.1248/bpb.22.90] [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: 11/22/2022]
Abstract
Nitro reduction is a critical step in the mutagenic activation of nitroarene. Nitroarene and quinone are known to be reduced by common enzymes, and thus, naphthoquinone (NQ) was studied for its effects on the mutagenicity of nitroarene in the Ames test using Salmonella typhimurium TA98 without S9. The mutagenicity of 1,3-dinitropyrene in TA98 was found to increase 9- and 6-fold as much in the presence of 70 nmol/plate of 2-methyl-1,4-NQ and 2-hydroxy-1,4-NQ, respectively. Mutagenicity also became greater in 1,3,5-trinitronaphthalene, 1-nitropyrene and 3-nitrofluoranthene. Seventy nmol/plate of 2-methyl-1,4-NQ increased the mutagenicity of 1-nitropyrene by 10.5-fold as much.
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Affiliation(s)
- K Ohmori
- Kanagawa Prefectural Health Laboratory, Yokohama, Japan
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43
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Nakaoka T, Sugimoto T, Okimura Y, Chihara K. [Case of osteomalacia due to intravenous saccharated ferric oxide]. Nihon Naika Gakkai Zasshi 1998; 87:1372-3. [PMID: 9745288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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44
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Nakaoka T, Gonda K, Ogita T, Otawara-Hamamoto Y, Okabe F, Kira Y, Harii K, Miyazono K, Takuwa Y, Fujita T. Inhibition of rat vascular smooth muscle proliferation in vitro and in vivo by bone morphogenetic protein-2. J Clin Invest 1997; 100:2824-32. [PMID: 9389748 PMCID: PMC508488 DOI: 10.1172/jci119830] [Citation(s) in RCA: 125] [Impact Index Per Article: 4.6] [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: 02/05/2023] Open
Abstract
Vascular proliferative disorders are characterized by the proliferation of vascular smooth muscle cells (SMCs) and excessive extracellular matrix synthesis. We found that bone morphogenetic protein-2 (BMP-2) inhibited serum-stimulated increases in DNA synthesis and cell number of cultured rat arterial SMCs in a fashion quite different from that in the case of transforming growth factor-beta1 (TGF-beta1). In addition, TGF-beta1 stimulated collagen synthesis in SMCs, whereas BMP-2 did not. In an in vivo rat carotid artery balloon injury model, the adenovirus-mediated transfer of the BMP-2 gene inhibited injury-induced intimal hyperplasia. These results indicate that BMP-2 has the ability to inhibit SMC proliferation without stimulating extracellular matrix synthesis, and suggest the possibility of therapeutic application of BMP-2 for the prevention of vascular proliferative disorders.
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Affiliation(s)
- T Nakaoka
- Fourth Department of Internal Medicine, School of Medicine, University of Tokyo, Tokyo 112, Japan
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45
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Ogita T, Tanaka Y, Nakaoka T, Matsuoka R, Kira Y, Nakamura M, Shimizu T, Fujita T. Lysophosphatidylcholine transduces Ca2+ signaling via the platelet-activating factor receptor in macrophages. Am J Physiol 1997; 272:H17-24. [PMID: 9038918 DOI: 10.1152/ajpheart.1997.272.1.h17] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
To clarify the molecular mechanism underlying the lysophosphatidylcholine (LPC) signaling, we studied the effect of LPC on the intracellular free calcium concentration ([Ca2+]i) in murine peritoneal macrophages. LPC when added alone induced biphasic elevation of [Ca2+]i, which consisted of a rapid increase followed by sustained elevation. LPC, when added with equimolar cholesterol, induced only the rapid increase in [Ca2+]i, which was blocked by WEB-2086, a selective platelet-activating factor (PAF) receptor antagonist. These results suggest LPC exerts a specific Ca2+ signaling. The sustained elevation reflected the cell lysis. Furthermore, we confirmed its pathway in a more specific manner using cloned PAF receptors expressed in Chinese hamster ovary cells. LPC induced an elevation of [Ca2+]i in a concentration-dependent manner only when the PAF receptor had been expressed, and the elevation of [Ca2+]i was blocked by WEB-2086. Taken together, LPC transduces Ca2+ signaling via the PAF receptor. Activation of the PAF receptor by LPC may indicate its novel important role in the pathogenesis of atherosclerosis.
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Affiliation(s)
- T Ogita
- Fourth Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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46
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Nakaoka T, Kojima N, Ogita T, Tsuji S. Characterization of the phosphatidylserine-binding region of rat MARCKS (myristoylated, alanine-rich protein kinase C substrate). Its regulation through phosphorylation of serine 152. J Biol Chem 1995; 270:12147-51. [PMID: 7744864 DOI: 10.1074/jbc.270.20.12147] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
We reported previously that recombinant myristoylated, alanine-rich protein kinase C substrate (MARCKS) expressed in Escherichia coli as well as MARCKS purified from rat brain specifically bound to phosphatidylserine (PS) in a calcium-independent manner and that the binding was regulated through phosphorylation of MARCKS (Nakaoka, T., Kojima, N., Hamamoto, T., Kurosawa, N., Lee, Y. C., Kawasaki, H., Suzuki, K., and Tsuji, S. (1993) J. Biochem. (Tokyo) 114, 449-452). In this study, to identify the minimum PS-binding region of MARCKS and the regulatory phosphorylation site, the binding of MARCKS to PS was examined in deletion mutants producing glutathione S-transferase (GST) fusion proteins. The mutant proteins GST-6-180 and GST-127-160 had almost the same ability to bind to immobilized PS as MARCKS purified from rat brain, whereas GST-127-152 did not bind to it. In addition, the binding of GST-6-156 to immobilized PS was 62% of that of GST-6-180, but that of GST-6-152 was only 8% and that of GST-6-135 was not detected. The effect of phosphorylation by protein kinase C was examined in several mutants of GST-6-180 whose serine residues were substituted with alanine. After phosphorylation, the mutants GST-6-180[S156A and S163A], GST-6-180]S156A], and GST-6-180[S163A] did not bind to immobilized PS like native MARCKS and GST-6-180. However, even after phosphorylation, GST-6-180-[S152A] and GST-6-180[S152A and S156A] could bind to immobilized PS. These results strongly suggest that MARCKS binds to PS molecules in the inner leaflet of the plasma membrane through residues 127-156, with residues 153-156 (FKKS) being particularly important in the binding of MARCKS to PS, and that the binding is regulated through the protein kinase C-catalyzed phosphorylation of the serine at residue 152.
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Affiliation(s)
- T Nakaoka
- Fourth Department of Internal Medicine, School of Medicine, University of Tokyo, Japan
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Abstract
A 66-year-old female presented with spontaneous intraorbital hematoma manifesting as left exophthalmos after left eye discomfort persisting for 5 months. She had no history of head injury. Computed tomography revealed a round mass in her left orbit which was slightly high density with no postcontrast enhancement. A blood cyst was extirpated through frontotemporal craniotomy. Histological findings showed no tumor or vascular anomaly. Spontaneous intraorbital hematoma with insidious symptoms is extremely rare and should be considered in the differential diagnosis of orbital mass lesions.
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Hashimoto E, Ogita T, Nakaoka T, Matsuoka R, Takao A, Kira Y. Rapid induction of vascular endothelial growth factor expression by transient ischemia in rat heart. Am J Physiol 1994; 267:H1948-54. [PMID: 7977826 DOI: 10.1152/ajpheart.1994.267.5.h1948] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Vascular endothelial growth factor (VEGF or vascular permeability factor), a direct-acting, endothelial cell-specific mitogen, has been suggested to be involved in development and maintenance of vasculatures in tumor neovascularization and in normal tissues. To investigate possible roles of VEGF in ischemic hearts, we studied induction of VEGF mRNA by ischemia and hypoxia using coronary artery-ligated hearts in vivo and perfused hearts and cultured myocardial cells in vitro. VEGF mRNA was potently induced by ischemia in the heart in vivo. In perfused hearts, maximum expression was rapidly induced (within 30 min) by transient reversible ischemia (5-10 min of ischemia) and lasted at least 3 h. Induction was also caused by hypoxia, which was confirmed in perfused hearts and cultured myocardial cells. These results suggest that induction of VEGF mRNA is upregulated by oxygen deprivation in the heart and that not only infarction but also chronic ischemia in the clinical setting could induce VEGF as a potent angiogenesis factor to stimulate coronary collateral formation.
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Affiliation(s)
- E Hashimoto
- Fourth Department of Internal Medicine, School of Medicine, University of Tokyo, Japan
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Hashimoto E, Kage K, Ogita T, Nakaoka T, Matsuoka R, Kira Y. Adenosine as an endogenous mediator of hypoxia for induction of vascular endothelial growth factor mRNA in U-937 cells. Biochem Biophys Res Commun 1994; 204:318-24. [PMID: 7945378 DOI: 10.1006/bbrc.1994.2462] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Adenosine induced by hypoxia exerts various effects via different types of receptors. Recently, hypoxia was shown to be a strong inducer of vascular endothelial growth factor, a secreted endothelial cell specific mitogen. In this report, we studied on effects of adenosine on inducibility of VEGF and possible mediation of hypoxia for its induction in U-937 cells. Hypoxia induced expression of VEGF mRNA with an early peak at 1 hour. 5'-N-ethylcarboxamidoadenosine, an adenosine analog, strongly induced VEGF mRNA, which was inhibited by 3,7-dimethyl-1-propargylxanthine (DMPX), an A2-antagonist. The hypoxic induction was inhibited by adenosine deaminase, 7-(beta-hydroxyethyl)theophylline, a non-selective adenosine receptor antagonist and DMPX. These results suggest that the hypoxic induction of VEGF mRNA is mediated by adenosine via A2-receptor in U-937 cells.
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Affiliation(s)
- E Hashimoto
- Fourth Department of Internal Medicine, Tokyo University Branch Hospital, Japan
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Lee YC, Kojima N, Wada E, Kurosawa N, Nakaoka T, Hamamoto T, Tsuji S. Cloning and expression of cDNA for a new type of Gal beta 1,3GalNAc alpha 2,3-sialyltransferase. J Biol Chem 1994; 269:10028-33. [PMID: 8144500] [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: 01/29/2023] Open
Abstract
Based on the sequences of the highly conserved segments in the previously cloned sialyltransferases, a cDNA encoding a new type of Gal beta 1,3GalNAc alpha 2,3-sialyltransferase (ST3GalA.2) has been isolated from both mouse and rat brain cDNA libraries. The cDNA sequences included an open reading frame coding for 350 amino acids, and the primary structure of this enzyme suggested a putative domain structure consisting of four regions, like that in other glycosyltransferases. The deduced amino acid sequence of ST3GalA.2 (mouse) showed 76% identity in the active domain with that of the previously cloned mouse Gal beta 1,3GalNAc alpha 2,3-sialyltransferase (ST3GalA.1 (Lee, Y.-C., Kurosawa, N., Hamamoto, T., Nakaoka, T., and Tsuji, S. (1993) Eur. J. Biochem. 216, 377-385)). Northern blotting indicated that the expression of ST3GalA.2 mRNA is tissue-specific, it being prominent in brain and liver, while that in the other tissues is very low. This enzyme expressed in COS-7 cells exhibited transferase activity only toward the disaccharide moiety of Gal beta 1,3GalNAc of glycolipids as well as glycoproteins and oligosaccharides like ST3GalA.1, but showed a difference in acceptor substrate preference, i.e. asialo-GM1 and GM1 were much more suitable substrates for ST3GalA.2 than for ST3GalA.1.
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Affiliation(s)
- Y C Lee
- Frontier Research Program, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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