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Nebiki H, Hiramatsu S, Sakata Y, Suekane T, Yamasaki T, Nakai T, Koda Y, Kanazawa A, Inoue T. A rare case of plexiform neurofibroma of the liver in a patient without neurofibromatosis type 1. Clin J Gastroenterol 2020; 13:1297-1302. [PMID: 32918724 DOI: 10.1007/s12328-020-01227-z] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 08/27/2020] [Indexed: 11/29/2022]
Abstract
Plexiform neurofibroma is mainly associated with neurofibromatosis type 1 and is seldom observed in the liver. Its occurrence in the liver without neurofibromatosis type 1 is even rarer. We report an extremely rare case of plexiform neurofibroma of the liver diagnosed by laparoscopic biopsy in a patient without neurofibromatosis type 1. The patient was a 35-year-old man who had neither clinical signs nor any family history of neurofibromatosis type 1. Abdominal ultrasonography, as part of a health screening, had detected a hepatic tumor. Subsequent contrast ultrasonography, computed tomography, and magnetic resonance imaging showed the tumor extending from the retroperitoneal space around the aorta to the hepatic hilum and distal portal branches in the right hepatic lobe, gallbladder, and left hepatic lobe. 18F-fluorodeoxyglucose positron emission tomography showed no abnormal accumulation. Histopathological examination of the tumor obtained laparoscopically led to a diagnosis of plexiform neurofibroma. Because the patient was asymptomatic with no features of malignancy, he was only monitored and managed. At follow-up 10 years later, computed tomography showed a decrease in tumor size. It is important to recognize that, while rare, plexiform neurofibroma can occur without neurofibromatosis type 1. We recommend follow-up instead of unreasonable surgery in such cases.
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Affiliation(s)
- Hiroko Nebiki
- Department of Gastroenterology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan.
| | - Shinsuke Hiramatsu
- Department of Gastroenterology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Yuhei Sakata
- Department of Gastroenterology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Takehisa Suekane
- Department of Gastroenterology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Tomoaki Yamasaki
- Department of Gastroenterology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Takashi Nakai
- Department of Hepatology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Yoichi Koda
- Department of Radiology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Akishige Kanazawa
- Department of Hepato-Biliary-Pancreatic Surgery, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
| | - Takeshi Inoue
- Department of Pathology, Osaka City General Hospital, 2-13-22, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan
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Kataoka N, Hiramatsu S, Yasuda K, Kashu N, Yoshitake H, Takami T, Yamaguchi T, Tomita M, Shono Y, Makimoto S. [A Case of Advanced Gastric Cancer with Liver Metastases Treated with Curative Conversion Therapy after S-1 plus Oxaliplatin]. Gan To Kagaku Ryoho 2019; 46:1925-1927. [PMID: 32157014] [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: 06/10/2023]
Abstract
An 81-year-old man was referred to our hospital. Upper gastrointestinal endoscopy revealed a type 2 tumor in the antrum of the stomach. The histopathological findings showed a moderately differentiated HER2-negative adenocarcinoma. Two low-density areas of 17mm and 26mm in diameter were observed in the liver S6 and S8respectively at the CT scan. Nine courses of S-1 plus oxaliplatin(SOX)therapy were administered to this patient with gastric cancer and liver metastases. Since both the primary tumor and the liver metastases were significantly reduced by the chemotherapy, distal gastrectomy(D2 dissection)and partial liver resection(liver S6, S8)were performed. The histopathological findings revealed no tumor cells in the primary tumor, lymph nodes, and liver metastases, with a histologic effect of Grade 3. The patient underwent adjuvant therapy with S-1. He has been alive without recurrence for 11 months post-surgery.
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Yoshimoto T, Takihara H, Yoshihara T, Inoue T, Ishibashi K, Uraoka M, Nakamura A, Hiramatsu S, Baba S, Abe S, Matsuura K, Hoshikawa M, Taketani R, Tanaka H, Motozato K, Tanigawa Y, Nakao E, Yokomura A, Kono M, Kagari K, Furuta A, Sunada A, Maejima K, Tsuyuguchi E, Yamasaki Y, Shishimoto T. Usefulness of "Nelaton Attachment" for endoscopic submucosal dissection of colorectal neoplasms. Endosc Int Open 2019; 7:E1187-E1191. [PMID: 31475238 PMCID: PMC6715429 DOI: 10.1055/a-0961-7542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 03/12/2019] [Indexed: 12/28/2022] Open
Abstract
Background and study aims Although colorectal endoscopic submucosal dissection (ESD) has enabled high en bloc resection rates regardless of tumor size, colorectal ESD is still a challenging procedure. We developed a novel device called the Nelaton Attachment, which allows endoscopists to manipulate the ESD knives using two fingers of their left hand while holding the endoscope with their right hand. We retrospectively investigated the efficacy and safety of the Nelaton Attachment for colorectal ESD. We compared efficacy and safety between Nelaton Attachment and non-Nelaton Attachment groups, and also conducted an ex vivo experiment to evaluate the effect of the Nelaton Attachment. Patients and methods We retrospectively reviewed 36 consecutive patients with 37 colorectal tumors who had undergone ESD at Kishiwada Tokushukai Hospital and Naritatomisato Tokushukai Hospital between April 2016 and September 2018. The Nelaton Attachment was used for 22 of the 37 colorectal ESDs. In the ex vivo experiment, endoscopists inserted and withdrew an ESD knife 2 cm using two fingers of their left hand with and without the Nelaton Attachment. Results Median procedure time was significantly shorter in the Nelaton Attachment group (38 min [range 6 - 195 min]) compared to the non-Nelaton Attachment group (75 min [range 17 - 198 min]; P = 0.030). Median time to complete the ex vivo experiment five times was significantly faster with the Nelaton Attachment than without the Nelaton Attachment ( P = 0.001). Conclusions Use of the Nelaton Attachment for colorectal ESD is feasible and safe, and may facilitate colorectal ESD procedures.
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Affiliation(s)
- Taiji Yoshimoto
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan,Corresponding author Taiji Yoshimoto Department of GastroenterologyKishiwada Tokushukai Hospital4-27-1 Kamori cho KishiwadaOsaka 596-0042Japan+81-072-445-9793
| | - Hiroshi Takihara
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Tomoatsu Yoshihara
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Taro Inoue
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Kohei Ishibashi
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Masanao Uraoka
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Akihiro Nakamura
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Shinsuke Hiramatsu
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Shinichi Baba
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Shun Abe
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Ko Matsuura
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Masato Hoshikawa
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Rika Taketani
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Hironori Tanaka
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Kenichiro Motozato
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Yuji Tanigawa
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Eisuke Nakao
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Akitaka Yokomura
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Michihito Kono
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Kenji Kagari
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Akito Furuta
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Asuka Sunada
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Kenji Maejima
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Eri Tsuyuguchi
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Yasuo Yamasaki
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
| | - Takahiro Shishimoto
- Department of Gastroenterology, Kishiwada Tokushukai Hospital, Kishiwada, Japan
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Miyawaki Y, Sada K, Asano Y, Hayashi K, Yamamura Y, Hiramatsu S, Ohashi K, Morishita M, Watanabe H, Matsumoto Y, Kawabata T, Wada J. Progressive reduction of serum complement levels: a risk factor for relapse in patients with hypocomplementemia in systemic lupus erythematosus. Lupus 2018; 27:2093-2100. [DOI: 10.1177/0961203318804892] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objective Serologically active clinically quiescent (SACQ)-SLE is a subtype of systemic lupus erythematosus (SLE); most SACQ-SLE patients relapse. Although complement and/or anti-dsDNA level fluctuations during SACQ status are reportedly not useful for predicting relapse, they might be useful in specific clinical settings. We aimed to assess the correlation between future relapse and progressive reductions in serum complement levels following remission in patients with hypocomplementemia . Methods We retrospectively reviewed patients aged ≥15 years who were treated with ≥20 mg/day of prednisolone for remission induction. After achieving remission, the patients treated with prednisolone tapered to ≤15 mg/day without relapse and followed by hypocomplementemia (first hypocomplementemia point) were analyzed. The primary outcome was the relapse during the first 24 months. Results Seventy-six patients were enrolled; 31 (40.8%) relapsed. A ≥10% reduction after the first hypocomplementemia point in serum C3, C4, and CH50 levels was found in 10, 21, and 16 patients, respectively. Hazard ratios (95% confidence intervals) for relapse were 2.32 (0.92–5.12) for serum C3 levels and 2.46 (1.18–5.01) for serum C4 levels. Progressive reductions in serum C3 and C4 levels had relatively high specificity (93.3% and 82.2%) but limited sensitivity (22.6% and 41.9%) for predicting relapse. However, simultaneous progressive reduction in C3 levels and increase in anti-dsDNA antibody levels had the highest specificity (97.8%), and simultaneous progressive reduction in C4 levels or increase in anti-dsDNA antibody levels had the highest sensitivity (71.0%). Conclusion Simultaneous progressive reductions in complement levels and increases in anti-dsDNA antibody levels may indicate future relapse SACQ-SLE patients.
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Affiliation(s)
- Y Miyawaki
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Sada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Asano
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Hayashi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Yamamura
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S Hiramatsu
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Ohashi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - M Morishita
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - H Watanabe
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Matsumoto
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Kawabata
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - J Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Shidahara K, Hayashi K, Sada KE, Hiramatsu S, Morishita M, Watanabe H, Matsumoto Y, Kawabata T, Wada J. Refractory neuromyelitis optica spectrum disorder in systemic lupus erythematosus successfully treated with rituximab. Lupus 2018. [PMID: 29498304 DOI: 10.1177/0961203318760994"] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
We present a case of a woman with systemic lupus erythematosus (SLE) who had refractory episodes of neuromyelitis optica spectrum disorder (NMOSD) and was successfully treated with rituximab. She was positive for anti-aquaporin-4 (AQP4) antibody and had typical cranial and longitudinally extended spinal lesions but no optic nerve involvement. There is no established treatment for NMOSD/SLE overlap cases. Our experience suggests that rituximab may be effective for patients with combined SLE and anti-AQP4 antibody-positive NMOSD.
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Affiliation(s)
- K Shidahara
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Hayashi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K E Sada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S Hiramatsu
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - M Morishita
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - H Watanabe
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Matsumoto
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Kawabata
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - J Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Shidahara K, Hayashi K, Sada KE, Hiramatsu S, Morishita M, Watanabe H, Matsumoto Y, Kawabata T, Wada J. Refractory neuromyelitis optica spectrum disorder in systemic lupus erythematosus successfully treated with rituximab. Lupus 2018; 27:1374-1377. [DOI: 10.1177/0961203318760994] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We present a case of a woman with systemic lupus erythematosus (SLE) who had refractory episodes of neuromyelitis optica spectrum disorder (NMOSD) and was successfully treated with rituximab. She was positive for anti-aquaporin-4 (AQP4) antibody and had typical cranial and longitudinally extended spinal lesions but no optic nerve involvement. There is no established treatment for NMOSD/SLE overlap cases. Our experience suggests that rituximab may be effective for patients with combined SLE and anti-AQP4 antibody-positive NMOSD.
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Affiliation(s)
- K Shidahara
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K Hayashi
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - K E Sada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - S Hiramatsu
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - M Morishita
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - H Watanabe
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Y Matsumoto
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - T Kawabata
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - J Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Inoue T, Sonoda N, Hiramatsu S, Kimura S, Ogawa Y, Inoguchi T. Serum Bilirubin Concentration is Associated with Left Ventricular Remodeling in Patients with Type 2 Diabetes Mellitus: A Cohort Study. Diabetes Ther 2018; 9:331-338. [PMID: 29335891 PMCID: PMC5801254 DOI: 10.1007/s13300-018-0368-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Indexed: 01/19/2023] Open
Abstract
INTRODUCTION Previous studies have shown that serum bilirubin concentration is inversely associated with the risk of cardiovascular disease. The relationship between serum bilirubin concentration and left ventricular geometry, however, has not been investigated in patients with diabetes mellitus. METHODS In this cohort study, 158 asymptomatic patients with type 2 diabetes mellitus without overt heart disease were enrolled. Left ventricular structure and function were assessed using echocardiography. Serum bilirubin concentration, glycemic control, lipid profile, and other clinical characteristics were evaluated, and their association with left ventricular geometry was determined. Patients with New York Heart Association Functional Classification greater than I, left ventricular ejection fraction less than 50%, history of coronary artery disease, severe valvulopathy, chronic atrial fibrillation, or creatinine clearance less than 30 ml/min, and those receiving insulin treatment, were excluded. RESULTS Univariate analyses showed that relative wall thickness (RWT) was significantly correlated with diastolic blood pressure (P = 0.003), HbA1c (P = 0.024), total cholesterol (P = 0.043), urinary albumin (P = 0.023), and serum bilirubin concentration (P = 0.009). There was no association between left ventricular mass index and serum bilirubin concentration. Multivariate linear regression analysis showed that log RWT was positively correlated with diastolic blood pressure (P = 0.010) and that log RWT was inversely correlated with log bilirubin (P = 0.003). In addition, the patients with bilirubin less than 0.8 mg/dl had a higher prevalence of concentric left ventricular remodeling compared with those with bilirubin 0.8 mg/dl or more. CONCLUSION Our study shows that the serum bilirubin concentration may be associated with the progression of concentric left ventricular remodeling in patients with type 2 diabetes mellitus.
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Affiliation(s)
- Tomoaki Inoue
- Department of Diabetes Mellitus and Endocrinology, Tagawa Municipal Hospital, Fukuoka, Japan.
- Department of Diabetes Mellitus and Endocrinology, Hamanomachi Hospital, Fukuoka, Japan.
| | - Noriyuki Sonoda
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinsuke Hiramatsu
- Department of Diabetes Mellitus and Endocrinology, Hamanomachi Hospital, Fukuoka, Japan
| | - Shinichiro Kimura
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Yoshihiro Ogawa
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
- Department of Molecular and Cellular Metabolism, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Toyoshi Inoguchi
- Department of Medicine and Bioregulatory Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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Nakano T, Motoshita J, Sawada F, Okabe M, Tamae A, Hiramatsu S, Kodama S, Shiratsuchi H, Yasumatsu R, Nakashima T, Nakagawa T. Syndrome of inappropriate antidiuretic hormone secretion in a case of olfactory neuroblastoma without anti-diuretic hormone immunoreactivity: A case report and review of the literature. Auris Nasus Larynx 2016; 44:771-774. [PMID: 28010942 DOI: 10.1016/j.anl.2016.11.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 09/12/2016] [Revised: 11/12/2016] [Accepted: 11/28/2016] [Indexed: 11/25/2022]
Abstract
Olfactory neuroblastoma (ONB) is a relatively rare nasal or paranasal malignant tumor. This tumor is rarely accompanied by paraneoplastic syndromes such as syndrome of inappropriate antidiuretic hormone secretion (SIADH). Here, we report a 31-year-old female with histologically confirmed ONB who had been diagnosed with SIADH three years prior. She was treated with surgery followed by concurrent chemoradiotherapy. SIADH resolved immediately after surgical tumor resection. Immunohistochemically, both biopsy and resected specimens from the nasal cavity had been negative for ADH. Although extremely rare, ONB may be associated with SIADH, and the possibility of this cancer should be taken into account during the follow-up of idiopathic SIADH.
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Affiliation(s)
- Takafumi Nakano
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-3-1, Higashi-ku, Fukuoka 812-8582, Japan; Department of Otolaryngology, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan.
| | - Junichi Motoshita
- Department of Pathology, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan
| | - Fumi Sawada
- Department of Endocrine and Metabolic Diseases/Diabetes Mellitus, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan
| | - Midori Okabe
- Department of Otolaryngology, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan
| | - Akihiro Tamae
- Department of Otolaryngology, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan
| | - Shinsuke Hiramatsu
- Department of Endocrine and Metabolic Diseases/Diabetes Mellitus, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan
| | - Satoru Kodama
- Department of Otolaryngology, Graduate School of Medical Sciences, Oita University, Idaigaoka 1-1, Hazama-machi, Oita 879-5593, Japan
| | - Hideki Shiratsuchi
- Department of Otolaryngology, Hamanomachi Hospital, Nagahama 3-3-1, Chuo-ku, Fukuoka 810-8539, Japan
| | - Ryuji Yasumatsu
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-3-1, Higashi-ku, Fukuoka 812-8582, Japan
| | - Torahiko Nakashima
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-3-1, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Nakagawa
- Department of Otorhinolaryngology, Graduate School of Medical Sciences, Kyushu University, Maidashi 3-3-1, Higashi-ku, Fukuoka 812-8582, Japan
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Kobayashi K, Manji T, Hiramatsu S, Maeda K, Uemura J. Nitrogen metabolism in patients on peritoneal dialysis. Contrib Nephrol 2015; 17:93-100. [PMID: 487835 DOI: 10.1159/000402984] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hiramatsu S, Nebiki H, Ueno A, Wakahara Y, Maruyama H, Suekane T, Yamasaki T, Sasaki E, Sano K, Sato H, Nakai T, Kawasaki Y, Kioka K. [A case of paralytic ileus associated with varicella zoster virus infection]. Nihon Shokakibyo Gakkai Zasshi 2013. [PMID: 23739733 DOI: 10.11405/nisshoshi.110.1007] [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] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A 79-year-old woman with a history of pyothorax was admitted with a 4-day history of abdominal distension. Physical examination revealed marked abdominal distention, absent bowel sounds, and a vesicular rash over the left Th8-10 dermatome. Abdominal radiography showed gaseous distension of the colon and ileum. Colonoscopy excluded any obstructive process of the colon. Laboratory findings yielded positive results for serum IgM and IgG against the varicella zoster virus (VZV) . Paralytic ileus associated with the VZV was therefore diagnosed. The ileus improved after conservative treatment with intravenous acyclovir. Although shingles is frequently encountered, it is a rare cause of paralytic ileus. In the future, the VZV should be considered as one of the causes of paralytic ileus, and complete resolution can be achieved with conservative management.
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Hiramatsu S, Nebiki H, Ueno A, Maruyama H, Suekane T, Yamasaki T, Sasaki E, Sano K, Sato H, Nakai T, Kawasaki Y, Kioka K. [A case of primary biliary cirrhosis with systemic lymph node enlargement]. Nihon Shokakibyo Gakkai Zasshi 2012; 109:1784-1790. [PMID: 23047637] [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: 06/01/2023]
Abstract
A 40's woman was hospitalized with cervical lymph node enlargement. Laboratory examinations showed elevated serum bile duct enzymes and the presence of anti-mitochondrial antibody. Abdominal ultrasonography and computed tomography showed enlargement of not only perihepatic lymph nodes, but also axillary and cervical lymph nodes. FDG-PET showed intense uptake concordant with these lymph nodes. We performed endoscopic ultrasonographic fine-needle aspiration biopsy of a perihepatic lymph node, but detected no malignant cells. We then performed liver biopsy, and obtained a histological diagnosed primary biliary cirrhosis. Systemic lymph nodes decreased together with serum bile duct enzyme levels during treatment with ursodeoxycholic acid.
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Hiramatsu S, Nebiki H, Ueno A, Maruyama H, Suekane T, Yamasaki T, Sasaki E, Sano K, Sato H. [A case of autoimmune pancreatitis with multifocal mass lesions]. Nihon Shokakibyo Gakkai Zasshi 2012; 109:1409-1418. [PMID: 22863966] [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: 06/01/2023]
Abstract
We present a case of a 73-year-old man with multifocal autoimmune pancreatitis (AIP) in the pancreatic head and tail, and who had undergone sigmoidectomy and rectectomy 28 months before presenting to our department. Upon presentation, his serum IgG4 level was elevated at 267mg/dl, but tumor marker levels were within normal ranges. CT and MRI showed two localized pancreatic masses with delayed enhancement, but endoscopic retrograde pancreatography revealed neither stenosis nor dilatation of the main pancreatic duct. FDG-PET examination showed intense uptake in regions concordant with both tumors. The possibility of atypical AIP was a concern, but malignant tumor could not be clinically or radiologically excluded. Endoscopic ultrasonographic fine-needle aspiration biopsy was performed, but no malignant cells were detected. The patient underwent subsequent distal pancreatectomy. Histological evaluation of the tumors showed the presence of many IgG4-positive plasma cells without any evidence of malignancy.
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Ogo A, Maruta T, Ide C, Sakai Y, Matoba Y, Hiramatsu S, Usui T, Naruse M, Shimatsu A. Recombinant human growth hormone replacement in a Japanese man with a novel PROP1 gene mutation (R112X). Fukuoka Igaku Zasshi 2011; 102:277-283. [PMID: 22111336] [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: 05/31/2023]
Abstract
Congenital combined pituitary hormone deficiency (CPHD) is associated with deficiencies of anterior pituitary hormones. PROP1 gene mutations are often responsible for CPHD, but few such cases have been reported in Japan. This study describes a 37-year-old Japanese man with CPHD, treated with hydrocortisone, testosterone, and L-thyroxine, who was evaluated for adult growth hormone deficiency (GHD). Gene analysis revealed a previously unknown PROP1 mutation (R112X). After 10 months of recombinant human growth hormone (rhGH) administration, cortisol and urinary free cortisol levels were significantly lower than before therapy. This case underscores the importance of reassessing hypothalamic-pituitary-adrenal axis function in GHD patients, especially those with a PROP1 mutation, during rhGH therapy.
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Affiliation(s)
- Atsushi Ogo
- Department of Metabolism and Endocrinology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center.
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Ogo A, Matoba Y, Matsuda Y, Hiramatsu S. A decrease in the dose of pegvisomant was needed for the treatment of acromegaly after adrenalectomy in a patient with coexisting preclinical Cushing's syndrome. Intern Med 2011; 50:1987-91. [PMID: 21921382 DOI: 10.2169/internalmedicine.50.4973] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We herein describe the case of a 47-year-old woman with pre-clinical Cushing's syndrome caused by a left adrenal adenoma, which was diagnosed 6 years after trans-sphenoidal selective removal of a pituitary adenoma for acromegaly at age 35. The patient was started on bromocriptine and then somatostatin analogues after the surgery; however, since her serum insulin-like growth factor-1 (IGF-1) values remained above the age-adjusted normal range, the treatment for acromegaly was switched from somatostatin analogues to pegvisomant (10 mg daily), before a left laparoscopic adrenalectomy. After the subsequent adrenalectomy, the dose of pegvisomant could be reduced gradually to once every 4 days without any increase in the serum IGF-1 values. This is the first report describing the need for a different dose of pegvisomant for the treatment of acromegaly before and after adrenalectomy for pre-clinical Cushing's syndrome.
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Affiliation(s)
- Atsushi Ogo
- Department of Metabolism and Endocrinology, National Hospital Organization, Kyushu Medical Center, Japan.
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Abstract
This report presents the case of a 47-year-old female patient with fulminant type 1 diabetes mellitus and myocarditis. Following a high fever, nausea, vomiting and diarrhea, diabetic ketoacidosis occurred and she was transferred to the hospital. The plasma glucose level was 63.6 mmol/L and HbA1c was 7.0%. C-peptide was undetectable in her plasma. Blood gas analysis showed a pH of 6.99. Antibodies to glutamic acid decarboxylase nor insulinoma associated antigen-2 were not detected. She was diagnosed to have fulminant type 1 diabetes mellitus. Her electrocardiogram showed diffuse ST-segment elevations on the second day of admission, along with a positive troponin test. However coronary angiography revealed neither occlusion nor stenosis of the cardiac arteries. An endomyocardial biopsy revealed hypertrophic cardiomyocytes with a disarrangement of myofibers and the focal accumulation of mononuclear cells in the stroma, thus suggesting myocarditis or mild myocarditic change. Viruses are an important cause of myocarditis and the preceding flu-like symptoms indicate the association of viral infection with myocarditis in this case. The mechanisms by which fulminant type 1 diabetes mellitus occurs is still uncertain, but the presence of islet injury accompanied by myocardial inflammation in the current case suggested that a viral infection accounted for the onset of this type of diabetes.
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Affiliation(s)
- Shinsuke Hiramatsu
- Department of Metabolism and Endocrinology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center, Fukuoka 810-8563, Japan.
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Miyano M, Yamasaki T, Hiramatsu S, Sasaki E, Adachi K, Kurai O. [A case of congenital esophageal stenosis that remained untreated until adulthood and was improved by endoscopic balloon dilatation]. Nihon Shokakibyo Gakkai Zasshi 2010; 107:1630-1634. [PMID: 20938113] [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
A 20-year-old man had suffered from dysphagia since primary school. Upper gastrointestinal and endoscopy examinations revealed severe circumferential stenosis of the upper intra-thoracic esophagus. Secondary stenosis due to factors such as inflammation did not appear present, so congenital esophageal stenosis (CES) was diagnosed. Dysphagia improved after two endoscopic balloon dilatations. Almost all cases of CES are treated in baby-hood, and individuals who remain untreated until adulthood are rare. Check ups and diagnoses should be made taking CES into consideration, even in adults.
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Affiliation(s)
- Masato Miyano
- Department of Gastroenterology, Osaka City Juso Hospital.
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Ogo A, Matoba Y, Sakai Y, Hiramatsu S. A case of adrenal incidentaloma with 131I-adosterol scintigraphy showing high uptake despite no significant physical or endocrinological abnormalities. Fukuoka Igaku Zasshi 2010; 101:128-131. [PMID: 20865902] [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: 05/29/2023]
Affiliation(s)
- Atsushi Ogo
- National Hospital Organization Kyushu Medical Center, Department of Metabolism and Endocrinology, Clinical Research Institute 1-8-1 Jigyohama, Chuo-ku, Fukuoka-city 810-8563, Japan.
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Miyano M, Kurai O, Hiramatsu S, Yamasaki T, Sasaki E, Adachi K, Oka H. [A case of hepatocellular carcinoma with portal vein thrombus(Vp3)and lung metastases(stage IVB),which responded completely to treatment with Tegafur/Uracil]. Gan To Kagaku Ryoho 2010; 37:1139-1143. [PMID: 20567124] [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: 05/29/2023]
Abstract
A 65-year-old woman who had diffuse hepatocellular carcinoma(HCC)with tumor thrombus of right portalvein(Vp3) and lung metastases(Stage IVB)was treated by single-agent therapy with tegafur/uracil(UFT). As a result, primary and metastatic tumors were not recognized by diagnostic imaging, with a noted decrease of AFP, AFP-L3 and PIVKA-II. Generally, oral chemotherapy for HCC is not recommended because of the low response rate. However, there have been some reports including the present case which have showed a marked response with UFT. We thus conclude that UFT can be an option with low risk of crucial adverse effects in the treatment of selected HCC patients.
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Affiliation(s)
- Masato Miyano
- Department of Gastroenterology, Osaka City Juso Hospital
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Ogo A, Komori K, Nishida K, Hiramatsu S, Sakai Y, Matoba Y, Ide C, Maruta T. Fluid aspiration identified the primary cyst among multiple cervical cysts in a case of hyperparathyroidism. J Endocrinol Invest 2010; 33:360-1. [PMID: 20332706 DOI: 10.1007/bf03346602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Iwase M, Asano T, Sasaki N, Yoshizumi H, Hiramatsu S, Sakai Y, Ogo A, Iida M. Withdrawal of pioglitazone in patients with type 2 diabetes mellitus. J Clin Pharm Ther 2010; 35:401-8. [DOI: 10.1111/j.1365-2710.2009.01109.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Nishiwaki K, Hiramatsu S, Yano K. Tremor Suppression using Proxy-based Sliding-Mode Control for a Meal-Assist Robot. Robotics 2010. [DOI: 10.2316/p.2010.703-041] [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] Open
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Suwa J, Hiramatsu S. Abstract: P1315 ASSOCIATION OF METABOLIC SYNDROME AND CARDIOVASCULAR DISEASE. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)71332-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ide C, Takeo S, Kawara T, Morita S, Hiramatsu S, Sakai Y, Yoshizumi H, Ogo A. Gas-containing pericardial abscess in a type 2 diabetic patient. Fukuoka Igaku Zasshi 2009; 100:81-86. [PMID: 19507539] [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: 05/27/2023]
Abstract
A 63-year-old male with type 2 diabetes mellitus was admitted to our hospital with fever and chest pain. An echocardiogram, chest CT and MRI showed the gas-containing pericardial abscess located posteriol to the right atrium. He was initially treated by thoracoscopic pericardial fenestration to set a drainage tube in the pericardial abscess. However, the surgical treatment was discontinued because of a large amount of bleeding from the abscess wall. The patient was then treated by continued administration of antibiotics and gamma-globulin. The inflammatory reactions improved and shrinkage of the abscess was confirmed.
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Affiliation(s)
- Chiharu Ide
- Department of Metabolism and Endocrinology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
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Ogo A, Watanabe A, Ide C, Maruta T, Sakai Y, Hiramatsu S, Uesugi N, Shigematsu K. Case of adrenal incidentaloma in which autonomous cortisol production became clear during a very short term. Fukuoka Igaku Zasshi 2008; 99:150-158. [PMID: 18975597] [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: 05/27/2023]
Abstract
A 57-year-old woman was admitted to the hospital for the further evaluation of a left adrenal incidentaloma measuring 45 mm x 33 mm. She had no signs of the clinical manifestation of hypercortisolism. An endocrine evaluation revealed that her ACTH level was normal and cortisol values were almost normal pattern excluding the value at 9 PM slightly rising, however, the cortisol was not completely suppressed by the overnight administration of 1 mg dexamethasone. These findings indicated that subtle abnormalities of the hypothalamo-pituitary-adrenal axis were present in this case. After 3 months, surprisingly, the ACTH was suppressed to low levels. Further hormonal investigations revealed that the cortisol level was normal but had an abnormal diurnal rhythm and was not suppressed completely by a 1 mg or an 8 mg overnight dexamethasone dose. Adrenal scintigraphy revealed positive uptake in the left adrenal tumor with no uptake in the right adrenal gland. The patient underwent a left laparoscopic adrenalectomy. Microscopically, the tumor displayed histopathological features in common with ACTH-independent macronodular adrenocortical hyperplasia, including clear cell predominance, a pattern of small compact nests in clear cell areas, and a cord-like arrangement of small compact cells. An in situ hybridization study demonstrated the hybridization signals for P-450scc, 3beta-HSD, P-450c21, P-45011beta, and P-45017a which were observed in the clear cells as well as compact cells, the compact cells being more intensely stained. This case indicates the ability of autonomous cortisol production to become clear during a very short term and a more detailed and careful short-time follow-up should be recommended in patients with adrenal incidentalomas.
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Affiliation(s)
- Atsushi Ogo
- Department of Metabolism and Endocrinology, National Hospital Organization Kyushu Medical Center.
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Ogo A, Eto T, Hiramatsu S, Watanabe A, Sakai Y, Yoshizumi H, Uesugi N, Nakajima O. Autopsy of a patient with Cushing's Syndrome who was revealed to have pulmonary tumorlets producing ectopic ACTH. Endocr J 2007; 54:863-70. [PMID: 18000346 DOI: 10.1507/endocrj.k07-125] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The patient, a 78-year-old female with a 10-year history of type 2 diabetes mellitus, was admitted to our department for evaluation of leg edema and general fatigue. Biochemical investigations revealed hypokalemia and elevated serum cortisol and plasma ACTH levels, with a loss of diurnal rhythm and failure of suppression at high doses (8 mg) of dexamethasone. No pituitary tumor or parasellar tumor was detected by contrast-enhanced computed tomography (CT) or magnetic resonance image scan of the pituitary. High resolution CT of the lung and bronchoscopic examination revealed no abnormalities. Abdominal and pelvic CT indicated bilateral, slightly diffuse, adrenal gland hyperplasia only. These findings led to a diagnosis of ACTH-dependent hypercortisolism from an undefined source. Ten days after admission the patient had a fever and was diagnosed with disseminated intravascular coagulation. Despite intensive treatment about 1 month after admission the patient died from progressive multiple organ failure. At autopsy, a histological examination of the periphery of the right middle lobe of the lung revealed the presence of tumorlets. Immunohistochemical staining of the tumorlets revealed scattered cells containing ACTH and many cells containing chromogranin A that were positive for Grimelius staining. In addition, multiple microabscesses were present throughout most tissues of the body. The ectopic hormonal production observed in the present case suggests that pulmonary tumorlets should thus be considered in the differential diagnosis of Cushing's syndrome, and medical treatment to inhibit steroidogenesis should be started immediately to reduce the risk of complications from hypercortisolism.
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Affiliation(s)
- Atsushi Ogo
- Department of Metabolism and Endocrinology, Clinical Research Institute, National Hospital Organization Kyushu Medical Center, Fukuoka City, Japan
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Kim J, Reber HA, Dry SM, Elashoff D, Chen SL, Umetani N, Kitago M, Hines OJ, Kazanjian KK, Hiramatsu S, Bilchik AJ, Yong S, Shoup M, Hoon DSB. Unfavourable prognosis associated with K-ras gene mutation in pancreatic cancer surgical margins. Gut 2006; 55:1598-605. [PMID: 16682430 PMCID: PMC1860104 DOI: 10.1136/gut.2005.083063] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.0] [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] [Indexed: 12/30/2022]
Abstract
BACKGROUND Despite intent to cure surgery with negative resection margins, locoregional recurrence is common in pancreatic cancer. AIMS To determine whether detection of K-ras gene mutation in the histologically negative surgical margins of pancreatic cancer reflects unrecognised disease. PATIENTS Seventy patients who underwent curative resection for pancreatic ductal adenocarcinoma were evaluated. METHODS All patients had surgical resection margins (pancreatic transection and retroperitoneal) that were histologically free of invasive cancer. DNA was extracted from these paraffin embedded surgical margins and assessed by quantitative real time polymerase chain reaction to detect the K-ras gene mutation at codon 12. Detection of K-ras mutation was correlated with standard clinicopathological factors. RESULTS K-ras mutation was detected in histologically negative surgical margins of 37 of 70 (53%) patients. A significant difference in overall survival was demonstrated between patients with margins that were K-ras mutation positive compared with negative (median 15 v 55 months, respectively; p = 0.0008). By univariate and multivariate analyses, detection of K-ras mutation in the margins was a significant prognostic factor for poor survival (hazard ratio (HR) 2.8 (95% confidence interval (CI) 1.5-5.3), p = 0.0009; and HR 2.8 (95% CI 1.4-5.5), p = 0.004, respectively). CONCLUSIONS Detection of cells harbouring K-ras mutation in histologically negative surgical margins of pancreatic cancer may represent unrecognised disease and correlates with poor disease outcome. The study demonstrates that molecular-genetic evaluation of surgical resection margins can improve pathological staging and prognostic evaluation of patients with pancreatic ductal adenocarcinoma.
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Affiliation(s)
- J Kim
- Department of Molecular Oncology, John Wayne Cancer Institute, 2200 Santa Monica Blvd, Santa Monica, CA 90404, USA
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Ogo A, Hiramatsu S, Watanabe A, Asano T, Yoshizumi H. Short term intensive insulin therapy improves insulin secretion significantly in type 2 diabetic patients. Fukuoka Igaku Zasshi 2006; 97:277-84. [PMID: 17134031] [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: 05/12/2023]
Abstract
To investigate the effects of short-term (1 week) intensive insulin therapy, on glycemic control, insulin secretion, and insulin sensitivity in type 2 diabetic patients, an open prospective study was conducted in sixteen type 2 diabetic patients receiving diet therapy alone or treatment with oral hypoglycemic agents. Of the study subjects, 8 patients were treated with insulin, the remaining 8 patients served as the control group. The metabolic parameters were evaluated once before treatment and once during one of the following treatments : glycemic control as measured by 1,5-anhydro-D-glucitol (1,5-AG) and area under curve of glucose (AUCglucose), insulin secretion as measured by area under curve of daily serum insulin (AUCinsulin), and insulin sensitivity as measured by the K index of the insulin tolerance test (K(ITT)). Post-treatment plasma glucose (AUCglucose) and 1,5-AG levels in patients who had received intensive insulin therapy were comparable to those of the control group. A statistically significant increase in AUCinsulin occurred after intensive insulin therapy for just 1 week, while no change occurred in the control group. Insulin sensitivity (K(ITT)) did not improve significantly in patients treated with insulin or patients from the control group. These results indicate that intensive insulin therapy for 1 week improves insulin secretion remarkably but has little effect on insulin sensitivity in type 2 diabetic patients. Clinically, this suggests that intensive insulin therapy for one week might be one of the initial treatments of choice for such patients.
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Affiliation(s)
- Atsushi Ogo
- National Hospital Organization, Kyushu Medical Center, Department of Metabolism and Endocrinology, Clinical Research Institute, 1-8-1 Jigyohama, Chuo-ku, Fukuoka-city, 810-8563, Japan.
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Suwa J, Hiramatsu S. We-P13:366 The prevalence of metabolic syndrome among the people undergoing annual health checks in our institute. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81719-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yamada T, Chuchird N, Kawasaki T, Nishida K, Hiramatsu S. Chlorella viruses as a source of novel enzymes. J Biosci Bioeng 2005; 88:353-61. [PMID: 16232628 DOI: 10.1016/s1389-1723(99)80210-2] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Received: 07/02/1999] [Accepted: 07/31/1999] [Indexed: 11/23/2022]
Abstract
A special advantage has been conferred upon Chlorella cells as tools in biotechnology when viruses (Phycodnaviridae) infecting Chlorella cells were discovered and isolated. The viruses are large icosahedral particles (150-200 nm in diameter), containing a giant, 330-380 kbp long, linear dsDNA genome. Recently, the nucleotide sequence of the 330,740-bp genome of PBCV-1, the prototype virus of Phycodnaviridae, was determined, and up to 702 open reading frames (ORFs) were identified along the genome. The possible genes present include those encoding a variety of enzymes involved in the modification of DNA, RNA, protein and polysaccharides as well as those involved in the metabolism of sugars, amino acids, lipids, nucleotides and nucleosides. Many of these genes are actually expressed during viral infection, with functional enzymes detected in the host cytoplasm or incorporated into the virion. The successful utilization of these viral enzymes as various DNA restriction and modification enzymes (Cvi enzymes) that are now commercially available is well documented. Also noteworthy are virion-associated chitinase and chitosanase activities that have potentially important applications in the recycling of natural resources. The virions of Chlorella viruses contain more than 50 different structural proteins, ranging in size from 10 to 200 kDa. Some of these proteins may be replaced with useful foreign proteins using recombinant DNA technology. The proteins of interest can be recovered easily from the viral particles, and collected by centrifugation after complete lysis of the host Chlorella cells.
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Affiliation(s)
- T Yamada
- Department of Molecular Biotechnology, Graduate School of Advanced Matter, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
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Flanagan JW, Ohmi K, Fukuma H, Hiramatsu S, Tobiyama M, Perevedentsev E. Observation of vertical betatron sideband due to electron clouds in the KEKB low energy ring. Phys Rev Lett 2005; 94:054801. [PMID: 15783650 DOI: 10.1103/physrevlett.94.054801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2004] [Indexed: 05/24/2023]
Abstract
The effects of electron clouds on positively charged beams have been an active area of research in recent years at particle accelerators around the world. Transverse beam-size blowup due to electron clouds has been observed in some machines and is considered to be a major limiting factor in the development of higher-current, higher-luminosity electron-positron colliders. The leading proposed mechanism for beam blowup is the excitation of a fast head-tail instability due to short-range wakes within the electron cloud. We present here observations of betatron oscillation sidebands in bunch-by-bunch spectra that may provide direct evidence of such head-tail motion in a positron beam.
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Affiliation(s)
- J W Flanagan
- High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan.
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Abstract
AIM To investigate clinical efficacy of pioglitazone in association with plasma adiponectin concentration in type 2 diabetic patients. METHODS Ten diabetic patients were treated with 15 or 30 mg of pioglitazone for 8 weeks, and association between plasma adiponectin concentration before treatment and decrease in glycated albumin levels was examined. RESULTS Treatment with pioglitazone for 8 weeks lowered glycated albumin level (27.1 +/- 1.2 to 23.8 +/- 1.4%, p < 0.05), and inverse relationship between changes in glycated albumin and plasma adiponectin concentration before treatment was revealed (r = -0.66, p < 0.05). Plasma adiponectin concentrations of patients whose glycated albumin level reduced by more than 10% of the levels before treatment were significantly lower than those of patients whose glycaemic control was affected less (5.2 +/- 0.6 vs. 8.0 +/- 1.0 micro g/ml, p < 0.05). CONCLUSION Lower plasma adiponectin concentration predicts the clinical efficacy of pioglitazone.
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Affiliation(s)
- S Hiramatsu
- Department of Metabolism and Endocrinology, Department of Clinical Research, National Kyushu Medical Centre, Fukuoka, Japan.
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Enosawa S, Miyashita T, Fujita Y, Suzuki S, Amemiya H, Omasa T, Hiramatsu S, Suga K, Matsumura T. In vivo estimation of bioartificial liver with recombinant HepG2 cells using pigs with ischemic liver failure. Cell Transplant 2002; 10:429-33. [PMID: 11549067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
Abstract
Biological efficacy of a recombinant human hepatic cell line, glutamine synthetase transfected HepG2 (GS-HepG2), was examined with large-scale culture in a circulatory flow bioreactor and in pigs with ischemic liver failure. GS-HepG2 cells were cultured in a circulatory flow bioreactor from 5 x 10(7) to 4 x 10(9) cells for 109 days. The cells showed ammonia removal activity even under substrate (glutamic acid)-free medium, suggesting that the GS catalyzed the activity using intracellular glutamic acid that had been pooled during conventional culture. When GS-HepG2 bioartificial liver (BAL) was applied to pigs with ischemic liver failure, survival time was prolonged to 18.8 +/- 6.1 h (mean +/- SD, n = 4) from 13.8 +/- 5.4 h (n = 6) and 10.7 +/- 4.1 h (n = 6) (groups treated with cell-free BAL and treated with plasma exchange and continuous hemodiafiltration, respectively). Laboratory data indicated the tendency for improvement in increase of blood ammonia level and decline of blood coagulation indices in the GS-HepG2 BAL-treated group. The advantages and potential for the cell line as a bioreactor in BAL is also discussed, comparing to those of isolated porcine hepatocytes.
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Affiliation(s)
- S Enosawa
- National Children's Medical Research Center, Tokyo, Japan.
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Taniguchi S, Ikuyama S, Hiramatsu S, Shiokawa S, Hata T, Sato F, Imagawa M, Nomura Y, Sasano H, Nishimura J. [Aldosterone and cortisol-producing adrenal tumor]. Nihon Naika Gakkai Zasshi 2001; 90:2291-4. [PMID: 11769530 DOI: 10.2169/naika.90.2291] [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] [Subscribe] [Scholar Register] [Indexed: 04/17/2023]
Affiliation(s)
- S Taniguchi
- Department of Clinical Immunology and Medicine, Medical Institute of Bioregulation, Kyushu University, Beppu
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Hiramatsu S, Maekawa K, Hioka T, Takagaki K, Shoji K. [Female carrier of Duchenne muscular dystrophy presenting with secondary dilated cardiomyopathy: a case report]. J Cardiol 2001; 38:35-40. [PMID: 11496434] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
A 48-year-old female carrier of Duchenne muscular dystrophy had developed congestive heart failure but had no skeletal muscle symptoms. She was admitted to our hospital complaining of palpitation in December 1998. Her three sons had Duchenne muscular dystrophy. Neurological examination was unremarkable with no evidence of muscle weakness. Serum creatine kinase level was slightly increased. Echocardiography showed severe left ventricular dysfunction. Coronary angiography showed no abnormalities. Left ventriculography showed generalized hypokinesis and left ventricular ejection fraction was 28%. Dystrophin immunostaining of the skeletal muscle biopsy specimen showed a mosaic pattern. The dystrophin negative fibers were scattered among positive fibers. Cardiomyopathy is the only clinical manifestation of dystrophin gene mutation in carriers. Beta-blocker therapy(carvedilol 5 mg/day) was effective in this patient.
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Affiliation(s)
- S Hiramatsu
- Department of Cardiology, Okayama Red Cross Hospital, Aoe 2-1-1, Okayama, Okayama 700-8607
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Hiramatsu S, Grill V. Influence of a high-fat diet during chronic hyperglycemia on beta-cell function in pancreatic islet transplants to streptozotocin-diabetic rats. Eur J Endocrinol 2001; 144:521-7. [PMID: 11331219 DOI: 10.1530/eje.0.1440521] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Chronically elevated non-esterified fatty acids (NEFAs) can exert negative effects on beta-cell function both in vitro and in vivo. Negative effects of fatty acids have been difficult to evaluate in overt diabetes because of the attendant hyperglycemia that gives rise to the confounding influence of 'glucotoxicity'. In this work, we tested for the effects of NEFAs in diabetes by (i) taking into account potential effects of prevailing levels of hyperglycemia, and (ii) focusing on lingering (and therefore possibly more serious) effects. A diabetic transplantation model was used in which two islet grafts with 200 and 20 rat islets respectively were transplanted under the kidney capsule of syngeneic recipients previously made diabetic by streptozotocin injection. Rats were then fed either a high-fat or a low-fat diet for 7 weeks, followed by 1 week of normal laboratory chow. During dietary intervention, food was consumed ad libitum in one protocol, but was restricted in the low-fat group in a second protocol (in order to match blood-glucose levels). A high-fat diet did not affect body weight. At the end of the protocols, graft-bearing kidneys were isolated and perfused. Insulin responses to 27.8 mM glucose in perfusion were uniformly absent, in keeping with previously documented effects of chronic hyperglycemia. In contrast, 10 mM arginine induced a marked increase in insulin secretion after a low-fat diet, an effect that was significantly reduced after a high-fat diet (109 +/- 39 vs 13 +/- 15 fmol/min (P < 0.05) and 95 +/- 18 vs 32 +/- 5 fmol/min (P < 0.05) in the 2 protocols respectively). Regardless of protocol, no effect of diet could be detected on graft contents of insulin or preproinsulin mRNA. Thus, under conditions in which influences of chronic hyperglycemia could be accounted for, a previous high-fat diet with elevated NEFAs inhibited arginine-induced insulin secretion; however, the results indicate that insulin biosynthesis and/or beta-cell mass were not affected.
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Affiliation(s)
- S Hiramatsu
- Department of Molecular Medicine, Endocrine and Diabetes Unit, Karolinska Hospital, Stockholm, Sweden
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Abstract
Using a halo assay with E. coli lysates expressing Chlorella virus CVK2 genes on a cosmid contig, two different algal-lytic activities against Chlorella strain NC64A cells were found to be encoded on the CVK2 genome. The gene for vAL-1, one of the two activities, encoded a 349-aa ORF, which was homologous to PBCV-1 A215L and CVN1 CL-2. The vAL-1 gene was expressed at relatively early stages of the virus life cycle; transcripts and translation products appeared at 60 and 90 min postinfection, respectively. The vAL-1 protein was not incorporated into the viral particles but remained in the cell lysate, suggesting a role in the digestion of the cell wall before viral release at the final stage of infection. Cell wall materials isolated from Chlorella strain NC64A cells were digested by vAL-1 and degradation products were detected on TLC. In addition to Chlorella strain NC64A, vAL-1 lysed cells of four C. vulgaris strains as well as Chlorella sp. SAG-241-80.
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Affiliation(s)
- I Sugimoto
- Department of Molecular Biotechnology, Graduate School of ADSM, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima, Higashi, 739-8527, Japan
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Enosawa S, Miyashita T, Suzuki S, Li XK, Tsunoda M, Amemiya H, Yamanaka M, Hiramatsu S, Tanimura N, Omasa T, Suga K, Matsumura T. Long-term culture of glutamine synthetase-transfected HepG2 cells in circulatory flow bioreactor for development of a bioartificial liver. Cell Transplant 2000; 9:711-5. [PMID: 11144971 DOI: 10.1177/096368970000900520] [Citation(s) in RCA: 31] [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] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Glutamine synthetase (GS) is involved in an accessory pathway of ammonia removal in mammals. To develop a bioartificial liver with a human cell line, GS gene was transfected into HepG2 cells, which had no ammonia removal activity. After culturing in the presence of methionine sulfoximine (MSX), a GS inhibitor, we obtained a MSX-resistant HepG2 subline (GS-HepG2), which had amplified GS gene; ammonia removal activity was estimated to be 1/7 of that of rat primary culture hepatocytes. The cells were cultured in a circulatory flow bioreactor for 109 days, while they multiplied from 5 x 10(7) to 4 x 10(9) cells. Three days after inoculation, the ammonia level of the culture medium was lowered to a level maintained thereafter, suggesting that using recombinant cell lines for bioartificial livers enables long-term repeated treatment for hepatic failure patient. Judging from the rate of decrease in the amount of the added ammonia, the ammonia removal capability of 4 x 10(9) GS-HepG2 cells was almost equivalent to 5 x 10(8) porcine hepatocytes inoculated into the circulatory flow bioreactor. Apart from their ammonia removal activity, GS-HepG2 cells eliminated human tumor necrosis factor-alpha (TNF-alpha). Cytokine removal therefore promises to be another useful property of bioreactor cells.
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Affiliation(s)
- S Enosawa
- Department of Experimental Surgery and Bioengineering, National Children's Medical Research Center, Tokyo, Japan.
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Hiramatsu S, Inoue K, Tajirl Y, Grill V. Improvement by aminoguanidine of insulin secretion from pancreatic islets grafted to syngeneic diabetic rats. Biochem Pharmacol 2000; 60:263-8. [PMID: 10825471 DOI: 10.1016/s0006-2952(00)00318-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/18/2022]
Abstract
Prolonged hyperglycemia inhibits B-cell function by mechanisms that are largely unclarified. We investigated the involvement of advanced glycation end products (AGEs), using aminoguanidine as well as the AGE-breaking compound ALT-711 in a transplantation model. Islets from Wistar-Furth rats were transplanted under the kidney capsule of syngeneic streptozocin-diabetic recipients. Aminoguanidine was administered as 1 g/L in the drinking water. Graft-bearing kidneys were isolated and perfused to investigate insulin secretion, and grafts were excised to measure preproinsulin mRNA contents. In all transplants to diabetic rats, insulin responses to 27.8 mM glucose were abolished and aminoguanidine failed to correct this abnormality. However, aminoguanidine treatment for 8 weeks following transplantation increased preproinsulin mRNA contents of the grafts (P < 0.05). In addition, treatment with aminoguanidine enhanced the insulin secretory response to arginine (P < 0.05). Arginine-induced insulin secretion was also enhanced when aminoguanidine treatment was started after an initial 2-week implantation period rather than immediately after transplantation. On the other hand, treatment with ALT-711 (0.1 mg/kg by gavage) for 8 weeks completely failed to affect B-cell function of grafts, and ALT-711 was also ineffective under in vitro conditions. Our findings indicate that aminoguanidine effects in vivo are to a major extent not coupled to AGEs or nitric oxide synthetase inhibition, but possibly to oxidative modifications accomplished by the guanidine compound.
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Affiliation(s)
- S Hiramatsu
- Department of Molecular Medicine, Endocrine and Diabetes Unit, Karolinska Hospital, Karolinska Institute, S-17176, Stockholm, Sweden
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Muraki S, Tsunawake N, Hiramatsu S, Yamasaki M. The effect of frequency and mode of sports activity on the psychological status in tetraplegics and paraplegics. Spinal Cord 2000; 38:309-14. [PMID: 10822404 DOI: 10.1038/sj.sc.3101002] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE To examine whether the psychological benefits of sports activity differ between tetraplegics and paraplegics with spinal cord injury, and investigate the effect of frequency and modes of sports activity on the psychological benefits. METHODS The Self-rating Depression Scale (SDS), State-Trait Anxiety Inventory (STAI) and Profiles of Mood States (POMS) were administered to 169 male individuals with spinal cord injury (mean age=42.7 years) including 53 tetraplegics and 116 paraplegics. The subjects were divided into four groups according to their frequencies of sports activity; High-active (more than three times a week; n=32), Middle-active (once or twice a week, n=41), Low-active (once to three times a month, n=32), and Inactive (no sports participation, n=64). RESULTS Analysis of variance revealed significant differences in depression for SDS, trait anxiety for STAI and depression and vigor for POMS among the groups. High-active group showed the lowest scores of depression and trait anxiety and the highest score of vigor among the four groups. In contrast, no significant difference was found for any psychological measurements between tetraplegics and paraplegics. In addition, there was no significant difference for any psychological measurements among modes (wheelchair basketball, wheelchair racing, wheelchair tennis and minor modes). CONCLUSIONS These findings demonstrated that sports activity can improve the psychological status, irrespective of tetraplegics and paraplegics, and that the psychological benefits are emphasized by sports activity at high frequency.
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Affiliation(s)
- S Muraki
- Department of Nutrition and Health Sciences, Faculty of Nursing and Nutrition, Siebold University of Nagasaki, Japan
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Abstract
Prolonged hyperglycemia desensitizes beta cells. A role for hyperglycemia-induced excessive stimulation can be tested by diazoxide, which inhibits glucose-induced insulin secretion. Using diazoxide, we have investigated in a rat transplantation model whether excessive stimulation can induce lasting effects on beta cells. One batch with 150 islets and another with 20 islets isolated from Wistar-Furth rats were transplanted under the left-kidney capsule of syngeneic streptozotocin-diabetic recipients. In a first series, recipients were treated for 8 weeks with or without 0.2% diazoxide in the food. Graft-bearing kidneys were then perfused and excised. Diazoxide treatment increased by 5.5-fold the insulin response to 10 mmol/L arginine, by 4.1-fold the graft insulin content, and by 2.3-fold the preproinsulin mRNA versus nontreated diabetic controls. The persistence of these effects was assessed in a second series in which 8 weeks of diazoxide treatment was followed by 1 week of no treatment. Again, perfusion experiments showed a higher insulin response to arginine in diazoxide-treated rats (136.0 +/- 25.7 v 62.3 +/- 11.8 fmol/min, P < .05). Also, the response to 27.8 mmol/L glucose was increased (54.0 +/- 17.1 v 13.6 +/- 7.8 fmol/min, P < .05). The insulin content was increased (2.2 +/- 0.6 v 1.0 +/- 0.4 pmol/islet, P < .05), as well as the preproinsulin mRNA (0.60 +/- 0.08 v0.22 +/- 0.02 pg/islet, P < .05). In a third series, we tested the impact of diazoxide treatment when given only during the first 2 weeks following transplantation. When tested 6 weeks later, insulin secretion was unaffected, whereas there was a strong tendency for a higher preproinsulin mRNA and insulin content in grafts of diazoxide-treated rats. In conclusion, this study demonstrates that beta-cell function in transplanted islets is improved by diazoxide long after the end of treatment, an effect that is likely due to removal of hyperglycemia-induced excessive stimulation.
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Affiliation(s)
- S Hiramatsu
- Department of Molecular Medicine, Karolinska Hospital, Stockholm, Sweden
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Kobayashi K, Kobayashi E, Miyazu K, Muramori F, Hiramatsu S, Aoki T, Nakamura I, Koshino Y. Hypothalamic haemorrhage and thalamus degeneration in a case of Nasu-Hakola disease with hallucinatory symptoms and central hypothermia. Neuropathol Appl Neurobiol 2000; 26:98-101. [PMID: 10787346 DOI: 10.1046/j.1365-2990.2000.00224.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Muraki S, Tsunawake N, Tahara Y, Hiramatsu S, Yamasaki M. Multivariate analysis of factors influencing physical work capacity in wheelchair-dependent paraplegics with spinal cord injury. Eur J Appl Physiol 2000; 81:28-32. [PMID: 10552263 DOI: 10.1007/pl00013793] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
The purpose of this study was to determine the main factors that influence physical work capacity (PWC) in wheelchair-dependent paraplegics with spinal cord injury (SCI) using multivariate analysis. Thirty-two male paraplegics with SCI (PSCI) performed a submaximal arm exercise test on an arm-cranking ergometer to determine their PWC (oxygen uptake: ml x kg(-1) x min(-1)) at a heart rate of 150 beats x min(-1) (PWC150). Hayashi's Quantification first type was applied to analyze the effects on PWC150 of six factors: age, smoking, level of physical activity, occupation, level of SCI and period since SCI. This analysis revealed high partial correlation coefficients between PWC150 and the level of SCI (0.651) and physical activity level (0.583) compared to other factors. In addition, the multiple correlation coefficient for six factors in predicting PWC150 was 0.726. These results indicate that the level of SCI and physical activity are the most important factors in determining PWC in wheelchair-dependent male PSCI.
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Affiliation(s)
- S Muraki
- Siebold University of Nagasaki, Department of Nutrition and Health Sciences, Faculty of Nursing and Nutrition, 822 Yoshimutago, Nagayo-cho, Nishisonogi-gun, Nagasaki 851-2195, Japan.
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Hiramatsu S, Fujie M, Usami S, Sakai K, Yamada T. Two catalytic domains of Chlorella virus CVK2 chitinase. J Biosci Bioeng 2000; 89:252-7. [PMID: 16232738 DOI: 10.1016/s1389-1723(00)88828-3] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Received: 11/26/1999] [Accepted: 12/16/1999] [Indexed: 11/19/2022]
Abstract
VChti-1 chitinase encoded by the Chlorella virus CVK2 contained two catalytic domains belonging to family 18 glycosyl hydrolases. The first catalytic domain on a C-terminal-truncated derivative of vChti-1 generated exclusively chitobiose from chitotetraose, chitohexaose, and colloidal high-molecular mass chitin in the enzyme reaction, a typical characteristic of an exochitinase. In contrast, N-acetylglucosamine was produced from chitobiose as well as from chitooligosaccharides by the second catalytic domain on an N-terminal-truncated derivative of vChti-1. Therefore, the second domain possessed N-acetylglucosaminidase activity as well as endochitinase activity. The presence of two catalytic domains with different enzymatic properties in the viral enzyme seems to be necessary for hydrolyzing natural substrates in a cooperative fashion.
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Affiliation(s)
- S Hiramatsu
- Department of Molecular Biotechnology, Graduate School of ADSM, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
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Hiramatsu S, Ogihara A, Kitano Y, Mashiko M, Iseki S, Muramatsu J, Izumi T. [Clinical outcome of catheter fragmentation and aspiration therapy in patients with acute pulmonary embolism]. J Cardiol 1999; 34:71-8. [PMID: 10466088] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
The clinical usefulness of catheter fragmentation and aspiration therapy was studied in 8 patients with acute pulmonary embolism who received thrombolytic therapy using urokinase or tissue-type plasminogen activator (t-PA) (thrombolysis group) and 8 patients who underwent catheter fragmentation and aspiration therapy using a percutaneous transluminal coronary angioplasty (PTCA) guide catheter (catheter group). The patients were selected from 20 patients with a definite diagnosis of acute pulmonary embolism based on pulmonary arteriography and nuclear imaging. Urokinase (48 x 10(4) to 96 x 10(4) unit/day) or t-PA (12 x 10(6) unit/day) was administered intravenously for mean 4 days in the thrombolysis group. Pulmonary artery pressure was first measured using a Swan-Ganz catheter via the jugular vein or the femoral vein in the catheter group. Then, a PTCA guide catheter was advanced into the pulmonary artery, and the thrombus was disrupted repeatedly using a Radifocus wire, followed by manual aspiration. Subsequent treatment consisted of intravenous infusion of heparin (10,000 to 15,000 unit/day) and urokinase (24 x 10(4) to 48 x 10(4) unit/day) for mean 6 days. Partial revascularization was achieved in all patients in both groups. Five patients in the thrombolysis group died within 1 month due to respiratory failure, re-embolization, and/or hemorrhagic complications. One patient in the catheter group died of hemorrhagic shock. Pulmonary artery systolic pressure in the catheter group was significantly reduced from 47.4 to 26.5 mmHg (p < 0.01). Catheter treatment of acute pulmonary embolism associated with acute circulatory failure such as shock can lead to rapid hemodynamic improvement. In contrast, thrombolysis is an effective treatment, but bleeding problems are common and caution is required. Catheter fragmentation and aspiration therapy is effective for acute pulmonary embolism, is minimally invasive, and should be considered the treatment of first choice.
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Affiliation(s)
- S Hiramatsu
- Department of Cardiology, Numazu City Hospital, Shizuoka
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Hiramatsu S, Ishihara M, Fujie M, Usami S, Yamada T. Expression of a chitinase gene and lysis of the host cell wall during Chlorella virus CVK2 infection. Virology 1999; 260:308-15. [PMID: 10417265 DOI: 10.1006/viro.1999.9824] [Citation(s) in RCA: 33] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
A chitinase gene (vChti-1) encoded by the Chlorella virus CVK2 was cloned and characterized. The vChti-1 open reading frame consisted of 2508 bp corresponding to 836 amino acid residues. The predicted amino acid sequence contained two sets of a family 18 catalytic domain that is responsible for chitinase activity. Northern blot analysis revealed that the vChti-1 gene was expressed in virus-infected Chlorella cells late in infection, when a single transcript of about 2.5 kb appeared at 120 min postinfection. This result was confirmed by Western blotting with a specific anti-vChti-1 protein antibody; a protein of about 94 kDa was detected specifically beginning at 240 min postinfection and was present until cell lysis. The protein was not incorporated into viral particles but remained in the medium after cell lysis. The vChti-1 protein produced in virus-infected cells showed chitinase activity on zymogram assays.
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Affiliation(s)
- S Hiramatsu
- Graduate School of ADSM, Hiroshima University, 1-4-1 Kagamiyama, 739-8527, Japan
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Odashiro K, Hiramatsu S, Maruyama T, Kaji Y, Kanaya S, Fujino T, Niho Y. Isoproterenol-induced creatine kinase leakage in Langendorff-perfused rat heart associated with significant myocardial edema. Jpn Heart J 1998; 39:513-25. [PMID: 9810301 DOI: 10.1536/ihj.39.513] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Since the mechanism of creatine kinase (CK) leakage induced by beta-adrenoceptor activation remains unclear, we studied the effects of incremental application (10(-9) to 10(-4) M) of isoproterenol (ISP) on the CK efflux from Langendorff-perfused isolated rat hearts under aerobic conditions. Tissue water content was estimated after the perfusion experiment. ISP-induced dose-dependent CK leakage was noted in a sigmoidal fashion, which showed low temperature-dependency (Q10 of 2.41), sensitivity to cepharantine (10(-6) M) and propranolol (10(-7) to 10(-6) M) without any signs of demand ischemia or oxidant stress. CK liberation was not replicated at all by maneuvers activating cAMP-dependent protein kinase (A-kinase). Myocardial edema noted in the control ISP application was ameliorated by exposure to 10(-6) M propranolol or cepharantine (i.e., significant fall in tissue water content; p < 0.05). Histological study revealed nonspecific myocardial fiber swelling and separation without any myocyte necrosis for all the perfusion groups. These results suggest that ISP-induced CK leakage in this model is not mediated by beta-adrenoceptor stimulation, subsequent A-kinase activation or related demand ischemia, but is attributed most to the direct effects of ISP augmenting sarcolemmal CK and water permeability.
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Affiliation(s)
- K Odashiro
- First Department of Internal Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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Hiramatsu S, Ishihara S, Fujie M, Yamada T. Molecular mechanism of the alternative expression of the Chlorella virus CVK2 chitosanase gene. Nucleic Acids Symp Ser 1998:141-2. [PMID: 9586039] [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: 02/07/2023]
Abstract
A novel viral strategy for expression of two mRNAs from a single gene yielding two products with seemingly different functions (alternative gene expression) has be found. The vChta-1 gene of Chlorella virus CVK2 produced two functional chitosanase proteins with apparently different roles in viral infection: The larger 65-kDa chitosanase assembled into virion and presumably function at the beginning of infection, while the smaller 37-kDa enzyme remains in the host cytoplasm where it most likely aids in the digestion of the host cell wall prior to viral release. These predicted activities are essential for a cycle of viral infection. The dual expression of the vChta-1 gene most likely occurred by read-through into a downstream gene, ORF245.
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Affiliation(s)
- S Hiramatsu
- Department of Biotechnology, Faculty of Engineering, Hiroshima University, Japan
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Mitsuhashi T, Hiramatsu S, Takeuchi N, Itoh M, Yatagai T. Activities of optical laboratories 1 and 2 at the Photon Factory. J Synchrotron Radiat 1998; 5:842-844. [PMID: 15263671 DOI: 10.1107/s0909049597014295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 10/21/1997] [Indexed: 05/24/2023]
Abstract
Recent activities at optical laboratories 1 and 2 at the Photon Factory are presented. The activities are (i) construction of optical laboratory 1, (ii) reconstruction of optical laboratory 2, (iii) construction of a visible synchrotron radiation beam extraction mirror made of beryllium, (iv) small-beam-profile measurement by means of the image restoration method, (v) application of the adaptive optical system for correction of distorted wavefronts caused by deformation of the extraction mirror, (vi) construction of a synchrotron radiation interferometer for investigation of the spatial coherency of the visible synchrotron radiation beam and its application to the measurement of vertical beam profile and size.
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Affiliation(s)
- T Mitsuhashi
- High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305, Japan
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50
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Yamada T, Hiramatsu S, Songsri P, Fujie M. Alternative expression of a chitosanase gene produces two different proteins in cells infected with Chlorella virus CVK2. Virology 1997; 230:361-8. [PMID: 9143292 DOI: 10.1006/viro.1997.8486] [Citation(s) in RCA: 38] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Several Chlorella virus CVK2 proteins had chitosanase and/or chitinase activities. A gene coding for an ORF of 328 amino acids (aa) with a predicted molecular mass of 36,769 Da was cloned from the viral genome. The predicted amino acid sequence of an N'-portion (174 aa) of this gene product (vChta-1) showed 22 to 25% identity with various bacterial chitosanases. A glutathione S-transferase (GST)-vChta-1 fusion protein had strong chitosanase activity. Western blot analysis with antisera raised against the vChta-1 protein identified two proteins of 37 and 65 kDa in virus-infected Chlorella cells beginning at 240 min postinfection and continuing until cell lysis. The larger protein was packaged in the virion, while the smaller one remained in the cell lysate. Both chitosanase proteins were produced from the single gene, vChta-1, by a mechanism of alternative gene expression.
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Affiliation(s)
- T Yamada
- Department of Fermentation Technology, Faculty of Engineering, Hiroshima University, Japan.
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