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Oyanagi H, Sun ZH, Jiang Y, Uehara M, Nakamura H, Yamashita K, Zhang L, Lee C, Fukano A, Maeda H. In situ XAFS experiments using a microfluidic cell: application to initial growth of CdSe nanocrystals. J Synchrotron Radiat 2011; 18:272-279. [PMID: 21335916 DOI: 10.1107/s0909049510050545] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2010] [Accepted: 12/02/2010] [Indexed: 05/30/2023]
Abstract
The design and performance of a compact fluorescense XAFS apparatus equipped with a microfluidic cell for in situ studies of nanoparticles are described. CdSe nanoparticles were prepared by solution reaction starting from trioctylphosphine-Se. Time-resolved experiments were performed by precisely controlling the reactor coordinates (x,y), allowing the synchrotron X-ray beam to travel along a reactor channel, covering nucleation and initial growth of nanoparticles. Detailed analysis of EXAFS data combined with UV-vis spectra allow reliable estimation of particle size and density in the initial growth that cannot be accessible by conventional optical techniques based on a long-range order. The Se K-XANES spectra are interpreted by multi-scattering calculations providing bond formation kinetics consistent with the EXAFS data.
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Affiliation(s)
- H Oyanagi
- Photonics Research Institute, National Institute of Advanced Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan.
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2
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Oyanagi H, Tsukada A, Naito M, Saini NL, Lampert MO, Gutknecht D, Dressler P, Ogawa S, Kasai K, Mohamed S, Fukano A. Fluorescence X-ray absorption spectroscopy using a Ge pixel array detector: application to high-temperature superconducting thin-film single crystals. J Synchrotron Radiat 2006; 13:314-20. [PMID: 16799222 DOI: 10.1107/s0909049506015251] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2006] [Accepted: 04/26/2006] [Indexed: 05/10/2023]
Abstract
A Ge pixel array detector with 100 segments was applied to fluorescence X-ray absorption spectroscopy, probing the local structure of high-temperature superconducting thin-film single crystals (100 nm in thickness). Independent monitoring of pixel signals allows real-time inspection of artifacts owing to substrate diffractions. By optimizing the grazing-incidence angle theta and adjusting the azimuthal angle phi, smooth extended X-ray absorption fine structure (EXAFS) oscillations were obtained for strained (La,Sr)2CuO4 thin-film single crystals grown by molecular beam epitaxy. The results of EXAFS data analysis show that the local structure (CuO6 octahedron) in (La,Sr)2CuO4 thin films grown on LaSrAlO4 and SrTiO3 substrates is uniaxially distorted changing the tetragonality by approximately 5 x 10(-3) in accordance with the crystallographic lattice mismatch. It is demonstrated that the local structure of thin-film single crystals can be probed with high accuracy at low temperature without interference from substrates.
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Affiliation(s)
- H Oyanagi
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba 305-8568, Japan.
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Katakura H, Takenaka K, Nakagawa M, Sonobe M, Oyanagi H, Adachi M, Wada H, Tanaka F. 592 Maspin gene expression is a prognostic factor in non-small cell lung cancer. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80600-1] [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: 11/30/2022] Open
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4
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Tanaka F, Takenaka K, Ishikawa S, Oyanagi H, Yanagihara K, Takahashi C, Noda M, Wada H. 586 Expression of a novel MMP inhibitor, RECK, in relation with expression of MMPs and angiogenic factors in non-small cell lung cancer. EJC Suppl 2003. [DOI: 10.1016/s1359-6349(03)90618-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Oyanagi H, Takenaka K, Ito S, Ishikawa S, Kawano Y, Yanagihara K, Adachi Y, Ueda K, Tanaka F, Wada H. 814 Quantitative analysis of LUN expression, trans-activator of e-cadherin gene. EJC Suppl 2003. [DOI: 10.1016/s1359-6349(03)90839-1] [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: 11/26/2022] Open
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Nakayama T, Kubota A, Yonekura T, Hoki M, Kosumi T, Oyanagi H. A case of ischemic jejunal stricture after surgical reduction of intussusception. Pediatr Surg Int 2003; 19:504-5. [PMID: 12768315 DOI: 10.1007/s00383-002-0945-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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] [Accepted: 03/20/2002] [Indexed: 10/26/2022]
Abstract
A 15-year-old girl presented with small bowel obstruction due to ischemic jejunal stricture which developed three weeks after successful surgical reduction of an intussusception with a Peutz-Jeghers-type polyp as a lead point. The reduced jejunum had no macroscopic injury, and the stricture caused complete obstruction requiring jejunal resection.
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Affiliation(s)
- T Nakayama
- Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi, 589-8511 Osakasayama, Japan
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7
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Takata T, Tanaka F, Yamada T, Yanagihara K, Otake Y, Kawano Y, Nakagawa T, Miyahara R, Oyanagi H, Inui K, Wada H. Clinical significance of caspase-3 expression in pathologic-stage I, nonsmall-cell lung cancer. Int J Cancer 2002; 96 Suppl:54-60. [PMID: 11992386 DOI: 10.1002/ijc.10347] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Caspase-3 is a cysteine protease that plays an important role in the process of apoptotic cell death. Whereas many studies on the clinical significance of apoptosis in the therapy of malignant tumors have been reported, little has been studied clinically on caspase-3. In the present study, the clinical significance of caspase-3 expression in resected nonsmall-cell lung cancer (NSCLC) and its correlation with incidence of apoptosis were examined. A total of 118 consecutive patients who had undergone complete resection for pathologic Stage I NSCLC were retrospectively reviewed. Caspase-3 expression was examined immunohistochemically using a polyclonal antibody that recognized uncleaved caspase-3. The 5-year survival rate for patients with strong expression of caspase-3 (66.6%) was significantly lower than that for patients with weak expression (82.1%, P = 0.021). Expression of caspase-3 was not correlated with incidence of apoptosis, proliferative activity, or p53 status. Multivariate analysis confirmed that strong expression of caspase-3 was a significant factor to predict poor prognosis. These results suggest that enhanced expression of "uncleaved" caspase-3, that is, inactivated caspase-3, was correlated with poor prognosis in resected NSCLC.
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Affiliation(s)
- T Takata
- Department of Thoracic Surgery, Faculty of Medicine, Kyoto University, Kyoto, Japan
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8
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Kolobov AV, Oyanagi H, Tanaka K. In situ X-ray absorption fine structure detection of reversible photoinduced anisotropy in amorphous selenium. Phys Rev Lett 2001; 87:145502. [PMID: 11580661 DOI: 10.1103/physrevlett.87.145502] [Citation(s) in RCA: 2] [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: 05/14/2001] [Indexed: 05/23/2023]
Abstract
Photoinduced anisotropy in amorphous selenium ( a-Se) has been studied by in situ x-ray absorption fine structure spectroscopy. It is found that upon irradiation with linearly polarized light the chainlike fragments in a-Se are oriented with their c-axis perpendicular to the polarization plane of the inducing light. This chain orientation is reversible, correlates with optical anisotropy, and acts as a prelude to photoinduced anisotropic crystallization. This optically controlled reorientation of molecular fragments in a solid can be a basis for future novel devices.
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Affiliation(s)
- A V Kolobov
- Joint Research Center for Atom Technology (JRCAT), National Institute for Advanced Interdisciplinary Research (NAIR), Tsukuba, Ibaraki 305-8562, Japan
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Abstract
BACKGROUND/PURPOSE Congenital motor dysfunction of the intestine associated with a morphologically abnormal myenteric nervous plexus (MP) is known as Hirschsprung's disease allied disorder (HAD). However, the clinicopathologic features of HAD are not well understood, partially because a standardized method of histologic evaluation of MP has not been established. To elucidate the clinicopathologic relationship of HAD the authors reviewed 6 cases of HAD using a newly devised histologic evaluation method. METHODS Flat-mounted frozen sections of the ileum were stained for S-100 protein by fluorescent immunohistochemistry. Quantitative evaluation of MP was performed by measuring the fluorescence-positive area (MP ratio), and the results were compared with those of age-matched normal controls. RESULTS All of 6 patients required laparotomy within 1 month after birth and enterostomy between 23 days and 10 months. Three died of intractable enteritis by the age of 2.2 years and were totally dependent on parenteral nutrition (PN) throughout their lives. The other 3 have survived for 6 to 10 years but have required PN occasionally. MP ratio in controls was more than 0.34 at all ages, whereas that in HAD was significantly lower than that in controls according to the clinical severity. CONCLUSION MP size measured on 2-dimensional demonstration is suggested to be an indicator of clinical severity of HAD. J Pediatr Surg 36:898-900.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, Osaka, Japan
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Saitoh Y, Oyanagi H. [New total parenteral nutrition solution (GA-1080)]. Nihon Rinsho 2001; 59 Suppl 5:906-9. [PMID: 11439679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Saitoh
- Department of Medicine, Saiseikai Nakatsu Hospital and Medical Center Based on Social Welfare Organization Saiseikai Imperial Gift Foundation Inc
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Kolobov AV, Oyanagi H, Maeda Y, Tanaka K. Local structure of Ge nanocrystals embedded in SiO2 studied by X-ray absorption fine structure. J Synchrotron Radiat 2001; 8:511-513. [PMID: 11512833 DOI: 10.1107/s0909049500019683] [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: 07/31/2000] [Accepted: 12/04/2000] [Indexed: 05/23/2023]
Abstract
Local structure of Ge nanocrystals embedded in SiO2 has been studied by X-ray absorption fine structure on the Ge K-edge. The XANES and EXAFS results indicate that Ge atoms in samples with the Ge concentration x=25-40 mol. % are coordinated with oxygen atoms, while they exist as amorphous Ge clusters in samples with x=60 mol. %. Upon annealing, completely relaxed crystalline Ge phase is formed for samples with x=60 mol. %, in contrast to the x=25-40 mol. % sample, which show little or no indication of Ge cluster formation. A possible mechanism of Ge nanocluster formation is discussed.
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Affiliation(s)
- A V Kolobov
- Joint Research Center for Atom Technology-National Institute for Advanced Interdisciplinary Research, Tsukuba, Ibaraki, Japan
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Tanaka F, Otake Y, Nakagawa T, Kawano Y, Miyahara R, Li M, Yanagihara K, Inui K, Oyanagi H, Yamada T, Nakayama J, Fujimoto I, Ikenaka K, Wada H. Prognostic significance of polysialic acid expression in resected non-small cell lung cancer. Cancer Res 2001; 61:1666-70. [PMID: 11245481] [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: 02/19/2023]
Abstract
Polysialic acid (PSA) is a carbohydrate attached mainly to the neural cell adhesion molecule. Because PSA is composed of a linear homopolymer of alpha-2-8-linked sialic acid residues and has a large negative charge, the presence of PSA attenuates the adhesive property of neural cell adhesion molecule and increases cellular motility. In an earlier study, we demonstrated that PSA and STX, a polysialyltransferase, were associated with tumor progression in non-small cell lung cancer (NSCLC) (F. Tanaka et al., Cancer Res., 60: 3072-3080, 2000). Therefore, in the present study, to assess the prognostic significance of PSA in resected NSCLC, a total of 236 patients who underwent complete resection for pathological (p)-stage I-IIIa disease were reviewed retrospectively. PSA was expressed in 44 of 236 (18.6%) patients, and the expression was correlated with p-stage disease. For all p-stage patients, 5-year survival rates for those with PSA-positive and PSA-negative tumors were 52.1% and 71.3%, respectively, demonstrating a significantly worse prognosis for the PSA-positive patients (P = 0.012). Analysis for only p-stage I patients also demonstrated a significantly worse prognosis for the PSA-positive patients; 5-year survival rates of the PSA-positive and the PSA-negative patients were 45.1% and 83.5%, respectively, (P < 0.001). In addition, there proved to be no difference in the postoperative survival among p-stage I, II, and IIIa patients when PSA expression was positive. Multivariate analysis confirmed that PSA expression was an independent factor to predict poor prognosis in resected NSCLC. These results suggested that PSA could be an important clinical marker and that preoperative induction and/or postoperative adjuvant therapies should be performed for PSA-positive NSCLC, even if the disease is classified as p-stage I.
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Affiliation(s)
- F Tanaka
- Department of Thoracic Surgery, Faculty of Medicine, Kyoto University, Japan
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Kosumi T, Kubota A, Usui N, Yamauchi K, Yamasaki M, Oyanagi H. Laparoscopic ovarian cystectomy using a single umbilical puncture method. Surg Laparosc Endosc Percutan Tech 2001; 11:63-5. [PMID: 11269561] [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: 02/19/2023]
Abstract
To establish a minimally invasive technique to perform ovarian cystectomy, the authors applied a single umbilical puncture method. A 2-month old female infant was admitted to the hospital because of an ovarian cyst that showed no spontaneous shrinkage after her birth. An umbilical semicircular incision was made to insert a 10-mm trocar, into which a 3-mm laparoscope was inserted. The ovarian cyst was grasped using forceps inserted through an operating channel of the scope, and the cyst was removed through the incision. After aspiration of the cyst, the free cyst wall was resected, leaving the intact ovarian tissue. The operation was performed without difficulty or complication. The postoperative course was uneventful. The wound was inconspicuous, and the result was cosmetically excellent. The case demonstrated the feasibility of the minimally invasive technique using a single umbilical puncture for ovarian cystectomy in an infant.
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Affiliation(s)
- T Kosumi
- Department of Surgery II, Kinki University School of Medicine, Osakasayama, Osaka, Japan
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Yonekura T, Hirooka S, Kubota A, Hoki M, Kosumi T, Yamauchi K, Oyanagi H. Surgical intervention for emphysematous pulmonary regions in a postoperative infant with congenital diaphragmatic hernia. J Pediatr Surg 2000; 35:1820-1. [PMID: 11101744 DOI: 10.1053/jpsu.2000.19268] [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: 11/11/2022]
Abstract
A postoperative infant with congenital diaphragmatic hernia (CDH) developed extrinsic obstruction of the trachea by the innominate artery that ensued from unequal expansion of the lungs followed by left mediastinal shift. Septation of the anterior mediastinum prevented unequal expansion of the lungs, and elongation of the innominate artery improved proximal airway obstruction. Prolonged artificial ventilation, however, resulted in the emphysematous bullae in the left lung. Lung volume reduction surgery (LVRS), at 3 years of age, ameliorated the respiratory distress and resulted in good weight gain. Surgical intervention, including LVRS, should be considered to improve respiratory disturbance caused by difference in compliance of the lungs in children.
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Affiliation(s)
- T Yonekura
- Department of Pediatric Surgery, Nara Hospital, Kinki University School of Medicine, Nara, Japan
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Kubota A, Yonekura T, Usui N, Kosumi T, Yamauchi K, Yamasaki M, Oyanagi H, Nakayama M, Ida S, Nakajima T. Two cases of persistent hyperinsulinemic hypoglycemia that showed spontaneous regression and maturation of the Langerhans islets. J Pediatr Surg 2000; 35:1661-2. [PMID: 11083447 DOI: 10.1053/jpsu.2000.18346] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Near-total pancreatectomy has been recommended as the treatment for persistent hyperinsulinemic hypoglycemia (PHH) in infants. However, recently there has been a report described that one third of 95% pancreatectomy failed to prevent hypoglycemia and more than two thirds had diabetes ultimately. The authors experienced 2 cases of PHH, which raise a query about the extensive pancreatectomy. Case 1: A female patient who manifested PHH shortly after birth underwent less extensive pancreatectomy twice at age 2 months and 8 years. After each operation, her clinical symptoms regressed, and she became free from the disease eventually. Histologic findings showed nesidioblastosis in which the islets clearly matured. Case 2: A male infant with PHH had an absolute indication for pancreatectomy. However, after a meticulous control of the blood glucose level with parenteral nutrition followed by continuous enteral nutrition feeding combined with medication, he became free from the disease. The current cases show there exist cases of PHH in which the islets mature and symptoms regress spontaneously. Therefore, we conclude near-total pancreatectomy is not always the treatment of choice. As an alternate strategy, long-term controlled feeding and medication combined with or without less extensive pancreatectomy should be considered with the expectation of spontaneous regression.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University, Osaka, Japan
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Kubota A, Yonekura T, Hoki M, Oyanagi H, Kawahara H, Yagi M, Imura K, Iiboshi Y, Wasa K, Kamata S, Okada A. Total parenteral nutrition-associated intrahepatic cholestasis in infants: 25 years' experience. J Pediatr Surg 2000; 35:1049-51. [PMID: 10917294 DOI: 10.1053/jpsu.2000.7769] [Citation(s) in RCA: 82] [Impact Index Per Article: 3.4] [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: 11/11/2022]
Abstract
BACKGROUND/PURPOSE There are few long-term chronological reviews examining the incidence of total parenteral nutrition (TPN)-associated intrahepatic cholestasis (TPNAC) in infants. The authors therefore reviewed TPNAC in their 25-year series, and also looked at the current problems associated with TPN in infants. METHODS Two hundred seventy-three surgical neonates who received TPN for more than 2 weeks were divided into 3 groups chronologically: group A (1971 through 1982, n = 77), group B (1983 through 1987, n = 72), and group C (1992 through 1996, n = 124). TPNAC was defined as serum direct bilirubin (DB) level greater than 2.0 mg/dL during the neonatal period. RESULTS The incidence of TPNAC in groups A, B and C was 57%, 31%, and 25% (P< .01), respectively, and the mortality rate from TPN-associated complications was 13%, 3%, and 3% (P< .05), respectively. Over the last 5 years, severe TPNAC developed in 20 patients (16%). Four of 20 died of TPN-associated sepsis with hepatic failure; 2 had hypoganglionosis with intractable stagnant enteritis and subsequent sepsis, and 2 had fatal respiratory or cardiac disease. CONCLUSIONS The incidence of TPNAC in surgical neonates and TPN-associated mortality rates have decreased significantly. The mortality rate, however, still remains at 3%. Two of 4 fatal cases had hypoganglionosis, which were totally dependent on TPN. In patients who require long-term TPN, TPN still has unsolved problems, and small bowel transplantation may be indicated.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, Osaka, Japan
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Abstract
A routine prenatal sonographic examination at 37 weeks' menstrual age revealed a large sonolucent lesion with peristaltic movement in the abdomen of a fetus. After birth, the female infant showed progressive abdominal distention, and radiography showed a bubble-like dilatation of the small intestine. Exploratory laparotomy revealed ileal atresia with nearby partial torsion of the dilated small bowel. The incomplete torsion may have functioned as a check valve, inducing segmental dilatation of the ileum without proximal dilatation.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka 589-8511, Japan
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Oyanagi H, Ishii M, Lee CH, Saini NL, Kuwahara Y, Saito A, Izumi Y, Hashimoto H. Rapid and sensitive XAFS using a tunable X-ray undulator at BL10XU of SPring-8. J Synchrotron Radiat 2000; 7:89-94. [PMID: 16609179 DOI: 10.1107/s0909049599016817] [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: 11/25/1999] [Accepted: 12/22/1999] [Indexed: 05/08/2023]
Abstract
The design and performance of the high-brilliance XAFS facility at BL10XU of SPring-8, aimed at rapid and sensitive measurement of X-ray absorption fine structure (XAFS), is reported. Both undulator gap and double-crystal monochromator have been successfully controlled covering a wide energy range (5-30 keV). A versatile goniometer system, consisting of two independent high-precision goniometers, is capable of polarized XAFS in fluorescence mode and surface-sensitive experiments using a grazing-incidence geometry. By sharing major components, i.e. a monolithic Ge 100-pixel array detector and a closed-cycle He cryostat, both polarized XAFS and X-ray standing wave (XSW) experiments can be performed at low temperature (15-300 K). The performance of the spectrometer has been evaluated by recording XAFS spectra in transmission mode.
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Affiliation(s)
- H Oyanagi
- Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba 305-8568, Japan.
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Abstract
The authors describe a rare case of handlebar hernia in a 9-year-old-boy. All layers of his abdominal wall were disrupted by a fall on a bicycle; however, his skin and intra-abdominal organs were completely intact. Computed tomography demonstrated subcutaneous intestinal loops protruding through the rent. Surgical repair was performed, and his postoperative course was uneventful.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi, Osakasayama 589-8511, Japan
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Saini NL, Lanzara A, Natali F, Bianconi A, Akoshima M, Koike Y, Oyanagi H. Local structure and Tc suppression in Bi2Sr2Ca1-xYx(Cu1-yZny)2O8+delta superconductor at 1/8 doping. J Synchrotron Radiat 1999; 6:752-754. [PMID: 15263447 DOI: 10.1107/s0909049599001508] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 01/26/1999] [Indexed: 05/24/2023]
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Oyanagi H, Ishii M, Lee CH, Saini NL, Kuwahara Y, Saito A, Izumi Y, Hashimoto H. Rapid and sensitive XAFS using a tunable X-ray undulator. J Synchrotron Radiat 1999; 6:155-157. [PMID: 15263231 DOI: 10.1107/s0909049598017245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 12/10/1998] [Indexed: 05/24/2023]
Affiliation(s)
- H Oyanagi
- Electrotechnical Laboratory, Umezono, Tsukuba, Japan.
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Ishii M, Komuro S, Morikawa T, Aoyagi Y, Oyanagi H, Ishikawa T, Ueki T. The optically active center of Er-doped Si produced by laser ablation. J Synchrotron Radiat 1999; 6:477-479. [PMID: 15263351 DOI: 10.1107/s0909049599000898] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 01/18/1999] [Indexed: 05/24/2023]
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23
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Wen C, Yasue K, Wei S, Hu T, Oyanagi H. XAFS and XRD studies on local and long-range structures of mechanically alloyed AlxTi1-x solid solutions. J Synchrotron Radiat 1999; 6:725-727. [PMID: 15263438 DOI: 10.1107/s0909049598018123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 12/21/1998] [Indexed: 05/24/2023]
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Kolobov AV, Oyanagi H, Poborchii VV, Tanaka K. Structure of single selenium chains confined in nanochannels of zeolites: a polarized X-ray absorption study. J Synchrotron Radiat 1999; 6:362-363. [PMID: 15263308 DOI: 10.1107/s0909049598016975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 12/09/1998] [Indexed: 05/24/2023]
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Wei S, Oyanagi H, Kawanami H, Sakamoto K, Sakamoto T, Saini NL. Local structures of dilute impurities in Si crystal studied by fluorescence XAFS. J Synchrotron Radiat 1999; 6:573-575. [PMID: 15263384 DOI: 10.1107/s0909049598016665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 12/03/1998] [Indexed: 05/24/2023]
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Wei S, Oyanagi H, Sakamoto K, Takeda Y, Pearsall TP. Local structures of (Ge4/Si4)5 monolayer strained-layer supperlattice probed by fluorescence XAFS. J Synchrotron Radiat 1999; 6:790-792. [PMID: 15263460 DOI: 10.1107/s0909049598017853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1998] [Accepted: 12/17/1998] [Indexed: 05/24/2023]
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27
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Kotani J, Usami M, Nomura H, Iso A, Kasahara H, Kuroda Y, Oyanagi H, Saitoh Y. Enteral nutrition prevents bacterial translocation but does not improve survival during acute pancreatitis. Arch Surg 1999; 134:287-92. [PMID: 10088570 DOI: 10.1001/archsurg.134.3.287] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To evaluate the effect of enteral nutrition (EN) in attenuating bacterial and/or endotoxin translocation, maintaining immune responsiveness, and improving outcome in early acute pancreatitis (AP) in Wistar male rats. DESIGN Acute pancreatitis was induced in rats receiving total parenteral nutrition (TPN) (AP/TPN group) (n=34) and EN (AP/EN group) (n=35) by pressure injection of 1% deoxycholate into the biliopancreatic duct (0.6 mg/kg of body weight). Rats in the sham/TPN and sham/EN groups (n=10 each) underwent laparotomy without induction of AP. Catheters for TPN and EN were placed into the external jugular vein and jejunum, respectively. Rats were infused with Ringer lactate solution for 48 hours followed by TPN in the AP/TPN and sham/TPN groups, and EN in the AP/EN and sham/EN groups until day 7. The fluid volume and energy (calories) intake were similar in all groups. SETTING Medical school research laboratory. MAIN OUTCOME MEASURES Survival, blood endotoxin level, villus height, 5-bromo-2'-deoxyuridine (BrdU) uptake in the jejunum and ileum, bacterial culture of mesenteric lymph nodes, and CD4/CD8 ratio of T cells in mesenteric lymph nodes, spleen, and peripheral blood. RESULTS There was no difference in survival and pancreatic healing between the AP/TPN and AP/EN groups. Colony-forming units of the mesenteric lymph nodes and the endotoxin level were significantly lower in the AP/EN group than in the AP/TPN group (P<.05). Villus height and BrdU intake was significantly higher in the AP/EN group than in the AP/TPN group (P<.05). The CD4/CD8 ratio of T cells in spleen and peripheral blood was higher in the AP/EN group than in the AP/TPN group (P<.05), whereas there was no difference in mesenteric lymph nodes. CONCLUSIONS Jejunal administration of EN is well tolerated in early AP, maintains immune responsiveness and gut integrity, and reduces bacterial and/or endotoxin translocation. However, compared with TPN, EN does not improve outcome. These results suggest that factors other than bacterial and/or endotoxin translocation may be responsible for mortality in this rat model of early AP. However, additional studies of both early bacterial and/or endotoxin translocation and late assessment of outcome are indicated.
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Affiliation(s)
- J Kotani
- First Department of Surgery, Kobe University School of Medicine, Japan.
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Abstract
A routine prenatal sonographic examination at 36 weeks' menstrual age revealed a solid and slightly inhomogeneous soft-tissue tumor on a fetus's left upper arm. The mass in the left triceps brachii muscle measured 8 x 7 x 5 cm at birth. Because of progressive flexion contracture of the left elbow joint, at 2 months of age the infant underwent radical resection of the tumor, sparing some muscle fibers. Light microscopic and immunohistochemical studies revealed myofibromatosis. Neither tumor nor functional disorder of the arm was evident 3 years after surgery.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, Osakasayama, Osaka, Japan
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Kosumi T, Kubota A, Yonekura T, Hoki M, Asano S, Hirooka S, Kato M, Yasuda A, Oyanagi H, Nakajima T. Subcapsular hemorrhage of the liver in a very-low-birth-weight neonate: survival after decompression laparotomy. Pediatr Surg Int 1999; 15:270-1. [PMID: 10370042 DOI: 10.1007/s003830050574] [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: 11/24/2022]
Abstract
Subcapsular hemorrhage of the liver in a very-low-birth-weight neonate was successfully treated by decompression laparotomy. This may be the second smallest survivor after surgery in the literature.
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Affiliation(s)
- T Kosumi
- Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka 589-8511, Japan
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30
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Kubota A, Yamauchi K, Imano M, Yonekura T, Hoki M, Nose K, Hirooka S, Kato M, Oyanagi H, Nakayama M. An unusual presentation of congenital infantile myofibromatosis arising from the interspinous ligament. Pediatr Surg Int 1998; 14:138-9. [PMID: 9880725 DOI: 10.1007/s003830050463] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The authors describe an extremely rare presentation of congenital infantile myofibromatosis. A full-term newborn boy presented with a thumb-sized subcutaneous mass on the mid-spinal line between the 2nd and 3rd lumbar spinous processes. A solid tumor arising from the interspinous ligament was resected. Microscopic and immunohistochemical studies revealed myofibromatosis.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi, Osakasayama, Osaka 589, Japan
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31
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Yonekura T, Kubota A, Hoki M, Asano S, Nakayama T, Kato M, Oyanagi H. Intermittent obstruction of the inferior vena cava by congenital anteromedial diaphragmatic hernia: an extremely rare case of Budd-Chiari syndrome in an infant. Surgery 1998; 124:109-11. [PMID: 9663261] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- T Yonekura
- Department of Surgery II, Kinki University School of Medicine, Osaka, Japan
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32
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Tweet DJ, Oyanagi H. Development of a compact six-circle goniometer. J Synchrotron Radiat 1998; 5:905-907. [PMID: 15263692 DOI: 10.1107/s0909049597018098] [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: 11/27/1997] [Indexed: 05/24/2023]
Abstract
A compact versatile six-axis goniometer has been built which can be used with the scattering plane vertical or horizontal for anomalous X-ray diffraction and diffraction X-ray absorption fine structure using a tunable X-ray undulator at SPring-8. The diffractometer consists of a four-circle goniometer for the standard omega, 2theta, phi and chi motions and a two-circle goniometer on the 2theta arm for mounting the detector and analyser crystal. The goniometer is controlled via Ethernet, and standard data-acquisition software with a graphical user interface has been developed. A closed-cycle helium cryostat is mounted on the omega axis for temperature-dependent experiments from 330 K to 14 K. Preliminary experiments on a Bi(2)Sr(2)CaCu(2)O(8) single crystal demonstrate the performance. Superstructure peaks due to the one-dimensional spatial modulations in the b axis were recorded as a function of temperature above 20 K using an image plate.
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Affiliation(s)
- D J Tweet
- Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki 305, Japan
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33
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Oyanagi H, Kolobov A, Tanaka K. Pump and probe X-ray absorption fine structure using high-brilliance photon sources. J Synchrotron Radiat 1998; 5:1001-1003. [PMID: 15263725 DOI: 10.1107/s0909049597014301] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/1997] [Accepted: 10/21/1997] [Indexed: 05/24/2023]
Abstract
Pump and probe X-ray absorption fine structure (XAFS) is used as a local probe of excited atoms, which can provide direct information on lattice distortion, relaxation and atomic rearrangements associated with electronic excitations. In situ XAFS experiments during optical excitation are reported. Utilizing a grazing-incidence fluorescence excitation, which minimizes the mismatch between the probing depths of X-ray excitation and optical pumping, it is found that the dominant photoinduced defect state in amorphous selenium at low temperature is a pair of threefold neutral $C^0_3$ states: $2C^*_2 \rightarrow (C^0_3-C^0_3)$, where $C^*_2$ denotes the twofold excited lone-pair state. The results indicate that optical pumping of chalcogen atoms at low temperature leads to locally over-coordinated defect pairs similar to those in the liquid state. The origin of reversible photostructural changes, such as photodarkening or photoinduced fluidity, is attributed to the structural disorder caused by the formation and annihilation of dynamical interchain bonds during optical melting.
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Affiliation(s)
- H Oyanagi
- Electrotechnical Laboratory, 1-1-4 Umezono, Tsukuba, Ibaraki 305, Japan
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34
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Ishimaru E, Kubota A, Yonekura T, Sakakura S, Noguchi J, Ueda S, Oyanagi H, Kitayama Y, Imura K. Congenital esophageal atresia with tracheoesophageal fistula occurring in both members of dizygotic twins. Pediatr Surg Int 1998; 13:88-90. [PMID: 9563015 DOI: 10.1007/s003830050255] [Citation(s) in RCA: 6] [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: 02/07/2023]
Abstract
The authors present a pair of dizygotic twins with congenital esophageal atresia with tracheoesophageal fistula who underwent successful single-stage surgical repair. To our knowledge, this is the second set of dizygotic twins with this congenital anomaly in the literature.
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Affiliation(s)
- E Ishimaru
- Department of Pediatric Surgery, Osaka Medical Center for Maternal and Child Health, Japan
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35
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Oyanagi H. [Clinical significance and problems in parenteral nutritional care]. Nihon Geka Gakkai Zasshi 1998; 99:159-63. [PMID: 9614295] [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
The clinical indications for and types of intravenous nutritional support are reviewed from the standpoint of their advantages and disadvantages. Total parenteral nutrition (TPN, also known as intravenous hyperalimentation) improves and maintains not only nutritional status but immunocompetence in patients with restricted food intake, because almost all essential nutritional substrates can be administered in the parenteral root alone to meet energy requirements. In surgical fields, TPN reduces perioperative risk and complication rates and enhances postoperative recovery of patients with severe stress such as those under going thoracic esophagectomy or pancreatoduodenectomy. In addition to calory administration, another type of parenteral nutrition a the disease-specific formulation has been attempted to improve directly such pathophysiologic conditions as renal failure, hepatic failure, or sever acute pancreatitis. Despite the great benefits of TPN, it is associated with several complications related to the indwelling catheter or to inadequate substrates administered, Disuse atrophy of the intestinal mucosa in patients receiving TPN to decreases the host defense against bacterial infection. To avoid the abuse of TPN, the indications for it should be selected rigorously. Moderate calory administration of a maximum of 15-20 cal/kg/day via a peripherally inserted catheter has been reevaluated in patients on short-term fasts.
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Affiliation(s)
- H Oyanagi
- Department of Surgery II. Kinki University, School of Medicine, Osaka sayama, Japan
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36
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Oyanagi H. A new apparatus for polarized X-ray absorption fine structure using a grazing-incidence fluorescence excitation. J Synchrotron Radiat 1998; 5:48-53. [PMID: 16687800 DOI: 10.1107/s0909049597011321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
A new apparatus is described for surface-sensitive X-ray absorption fine structure (XAFS) at the 27-pole wiggler beamline BL13B at the Photon Factory. The apparatus is designed for polarized XAFS experiments at low temperature. A closed-cycle helium cryostat is rotated around the omega axis of a vertically mounted high-precision goniometer. The apparatus can be used for XAFS and X-ray standing-wave experiments, sharing a 19-element pure-Ge detector array as a fluorescence detector. The available temperature range is 15-300 K. The performance is demonstrated by in-plane polarized Cu K-EXAFS for a YBa2Cu307 thin film (approximately 1000 A) epitaxically grown on an SrTiO3 single crystal. An in-situ study of amorphous selenium under optical excitation revealed that neutral defect pairs (C3(0)-C3(0)) are formed by photoexcitation of lone pairs. This indicates that grazing-incidence fluorescence excitation is advantageous for 'pump-and-probe' experiments which can minimize the mismatch in the probing depth between X-ray and optical excitation.
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37
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Yamashita K, Matsunobe S, Tsuda T, Okuda K, Matsumoto K, Oyanagi H, Konishi J. Intratumoral necrosis of lung carcinoma: a potential diagnostic pitfall in incremental dynamic computed tomography analysis of solitary pulmonary nodules? J Thorac Imaging 1997; 12:181-7. [PMID: 9249675] [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: 02/05/2023]
Abstract
The authors determined the pattern and enhancement range of necrotic lung carcinoma using incremental dynamic computed tomography (CT). Thirty-seven pathologically proven lung cancers (range, 8-57 mm in diameter) were evaluated using incremental dynamic CT. Scans were obtained before and 30 seconds, 2 minutes, and 5 minutes after the onset of contrast material injection. Computed tomography numbers in circular regions of interest (60% of tumor diameter) were calculated, and the difference in CT number between nonenhanced and the scan showing maximum attenuation was determined. In cavitary necrotic carcinomas, regions of interest were established excluding areas of cavitation. Nine (24%) of 37 lung carcinomas had intratumoral necrosis; four (11%) had noncavitary necrosis, and five (14%) had cavitary necrosis. Maximum attenuation of four noncavitary necrotic carcinomas (mean 31 +/- standard deviation 25 HU; range, -3-56 HU) was lower than cavitary necrotic carcinomas (42 +/- 8 HU; range, 35-51 HU; p = 0.36) and non-necrotic carcinomas (48 +/- 17 HU; range, 25-91 HU; p = 0.07). All carcinomas showed maximum attenuation > or = 25 HU except for one noncavitary necrotic carcinoma (maximum attenuation = -3 HU; 36 mm in diameter). Noncavitary necrosis was recognized as low attenuation on noncontrast scan in two of four cases and as an unenhanced area on enhanced scan in four of four cases. Although noncavitary necrotic lung carcinoma may rarely show maximum attenuation < or = 15 HU, necrotic material is recognized as unenhanced area on enhanced scan.
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Affiliation(s)
- K Yamashita
- Department of Radiology, Shiga-Health Insurance Hospital, Otsu, Japan
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38
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Fukumori Y, Oyanagi H, Yoshimatsu K, Noguchi Y, Fujiwara T. Enzymatic Iron Oxidation and Reduction in Magnetite Synthesizing Magnetospirillum Magnetotacticum. ACTA ACUST UNITED AC 1997. [DOI: 10.1051/jp4:19971270] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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39
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Kubota A, Yonekura T, Kuroda D, Yasuda T, Kato M, Oyanagi H, Imano M, Sato T, Fukushima K, Okada M. Giant purulent mesenteric cyst. Pediatr Surg Int 1996; 11:45-6. [PMID: 24057470 DOI: 10.1007/bf00174584] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/01/1995] [Indexed: 10/26/2022]
Abstract
Infected intra-abdominal cystic lymphangiomas are very rare. We report a case of a purulent mesenteric cyst, histologically a cystic lymphangioma, w which developed in a 1-year-old girl who presented with marked abdominal distension and high fever. Magnetic resonance imaging revealed that the huge cystic lesion occupied the entire peritoneal cavity. It originated from the mesocolon. It was removed completely, and contained sticky pus at the base where the right fallopian tube penetrated it, which indicated the focus of infection. This may be the first report of a purulent mesenteric cyst in which the route of infection was suspected.
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Affiliation(s)
- A Kubota
- Department of Surgery II, Kinki University School of Medicine, 377-2 Onohigashi Osakasayama, 589, Osaka, Japan
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40
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Bianconi A, Saini NL, Rossetti T, Lanzara A, Perali A, Missori M, Oyanagi H, Yamaguchi H, Nishihara Y, Ha DH. Stripe structure in the CuO2 plane of perovskite superconductors. Phys Rev B Condens Matter 1996; 54:12018-12021. [PMID: 9985057 DOI: 10.1103/physrevb.54.12018] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Bianconi A, Saini NL, Lanzara A, Missori M, Rossetti T, Oyanagi H, Yamaguchi H, Oka K, Ito T. Determination of the local lattice distortions in the CuO2 plane of La1.85Sr0.15CuO4. Phys Rev Lett 1996; 76:3412-3415. [PMID: 10060960 DOI: 10.1103/physrevlett.76.3412] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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42
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Yamazaki T, Oyanagi H, Fujiwara T, Fukumori Y. Nitrite reductase from the magnetotactic bacterium Magnetospirillum magnetotacticum. A novel cytochrome cd1 with Fe(II):nitrite oxidoreductase activity. Eur J Biochem 1995; 233:665-71. [PMID: 7588814 DOI: 10.1111/j.1432-1033.1995.665_2.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Cytochrome cd1 nitrite reductase was isolated from magnetite-containing cells of the magnetotactic bacterium Magnetospirillum (formerly Aquaspirillum) magnetotacticum, which was microaerobically cultivated under denitrifying conditions. The enzyme showed absorption maxima at 643 nm and 409 nm in the oxidized form, and at 663, 551, 522, and 418 nm in the reduced form. A distinctive split absorption band did not occur at about 550 nm. The pyridine ferrohemochrome spectra suggested the presence of heme c and heme d1 in the molecule. The enzyme was composed of two identical subunits each with a molecular mass of 54 kDa; each subunit contained one c-type and one d-type heme. The isoelectric point was 9.2. The redox potentials of heme c and heme d1 were estimated to be +191 mV and +180 mV, respectively. Although the enzyme showed cyanide-sensitive N,N,N',N'-tetramethyl-p-phenylenediamine-O2 oxidoreductase activity and N,N,N',N'-tetramethyl-p-phenylenediamine-nitrite oxidoreductase activity, the enzyme did not oxidize M. magnetotacticum ferrocytochrome c-550 and Pseudomonas aeruginosa ferrocytochrome c-551 in the presence of nitrite. Furthermore, sodium succinate did not cause the reduction of cytochrome cd1 in the crude cell-free extract prepared from the magnetite-containing bacterial cells. However, M. magnetotacticum cytochrome cd1 showed a novel Fe(II):nitrite oxidoreductase activity whereas P. aeruginosa cytochromes cd1 had no Fe(II):nitrite oxidoreductase activity. These results suggest that M. magnetotacticum cytochrome cd1 may function as a Fe(II)-oxidizing enzyme under microaerobic conditions using nitrite as electron acceptor.
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Affiliation(s)
- T Yamazaki
- Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Japan
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Nakamura T, Shimamoto M, Yamazaki F, Yoshimura T, Itoi S, Ueno T, Oyanagi H, Nakai M, Shinozaki T. [The long-term results of isolated aortic valve replacement with 19 mm prostheses]. Kyobu Geka 1995; 48:824-8. [PMID: 7474579] [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: 01/25/2023]
Abstract
Twenty-five patients underwent isolated aortic valve replacement with 19 mm valves (8 cases with St. Jude Medical prostheses, 7 cases with Carpentier Edwards Pericardial prostheses and 10 cases with Björk-Shiley prostheses). Postoperative echocardiography revealed data as follows. Peak pressure gradients (mmHg) were 40.4 +/- 14.4 (mean +/- S.D.) in the SJM group, 23.4 +/- 9.8 in the CEP group and 50.5 +/- 16.7 in the BS group. End-diastolic left ventricular dimension in the BS group and interventricular septum thickness in the CEP group was reduced significantly. All but one case were in NYHA functional class I or II, and clinical improvement was almost satisfactory in all groups. However, in the BS group, 4 cases showed peak pressure gradients more than 50 mmHg. We conclude that 19 mm aortic prostheses in this study can provide satisfactory results. However, as for mechanical valve, it may be undesirable to choose BS prosthesis.
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Affiliation(s)
- T Nakamura
- Division of Cardiovascular Surgery, Shizuoka City Hospital, Japan
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44
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Oyanagi H, Sakamoto K, Shioda R, Kuwahara Y, Haga K. Ge overlayers on Si(001) studied by surface-extended x-ray-absorption fine structure. Phys Rev B Condens Matter 1995; 52:5824-5829. [PMID: 9981772 DOI: 10.1103/physrevb.52.5824] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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45
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Yamashita K, Matsunobe S, Takahashi R, Tsuda T, Matsumoto K, Miki H, Oyanagi H, Konishi J. Small peripheral lung carcinoma evaluated with incremental dynamic CT: radiologic-pathologic correlation. Radiology 1995; 196:401-8. [PMID: 7617852 DOI: 10.1148/radiology.196.2.7617852] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
PURPOSE To correlate incremental dynamic computed tomographic (CT) and pathologic findings in peripheral lung cancer. MATERIALS AND METHODS Lung lesions smaller than 3 cm in diameter were evaluated in 18 patients. CT values of the inner area of the nodule at plain CT and at 30 seconds, 2 minutes, and 5 minutes after administration of nonionic contrast material were calculated with incremental dynamic CT. Maximum attenuation was compared with pathologic type of lung carcinoma and with number of vessels and distribution of elastic fibers in the pathologic specimen. RESULTS Enhancement of all lesions was statistically significant (P < .0001). Maximum attenuation of lung carcinomas correlated positively with number of small vessels (diameter, 0.02-0.10 mm) (r = .77). Distribution of elastic fibers in the tumoral interstitium correlated with maximum attenuation (P = .04 between grades 1 and 3) and with number of small vessels (P = .01 between grades 1-3; P = .008 between grades 1 and 3). CONCLUSION Enhancement characteristics of lung carcinomas reflect the number of small tumoral vessels and the distribution of elastic fibers in the tumoral interstitium.
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Affiliation(s)
- K Yamashita
- Department of Radiology, Shiga Health Insurance Hospital, Otsu, Japan
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46
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Oyanagi H, Shioda R, Kuwahara Y, Haga K. Surface-Sensitive XAFS in the Hard X-ray Region with Sub-Monolayer Sensitivity. J Synchrotron Radiat 1995; 2:99-105. [PMID: 16714796 DOI: 10.1107/s0909049595001506] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Surface-sensitive X-ray absorption fine structure (XAFS) with sub-monolayer sensitivity based on grazing-incidence fluorescence detection is reported. The efficiency of fluorescence detection increased by more than two orders of magnitude by combining a multipole wiggler with a multi-element Si(Li) solid-state detector. The capability of the present technique for structural studies of surfaces and buried interfaces in the hard X-ray region was demonstrated by As K-edge XAFS studies of the InP(001) surface exposed to AsH(3) flow. The results indicated that ~0.1 monolayer As atoms are incorporated into the surface replacing the P atoms.
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47
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Abstract
A 14-year-old female with ulcerative colitis developed right anterior cervical pain and high fever. Cervical contrast-enhanced computed tomography (CE-CT) showed a wall thickness of the right common carotid artery which suggested aortitis. Her pulmonary angiography demonstrated a narrowing of the pulmonary arteries and she was diagnosed as having Takayasu's disease associated with ulcerative colitis. HLA analysis showed Bw52 and DR2 haplotype, which is frequently found in patients with Takayasu's disease associated with ulcerative colitis.
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Affiliation(s)
- R Sato
- Second Department of Internal Medicine, Fukushima Medical College
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48
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Izutani R, Noguchi J, Kato M, Oyanagi H, Hirose K. [Use of the PCR in the quantitation of Mn-SOD and TNF-alpha mRNA expression by gastric mucosa in gastric cancer]. Nihon Shokakibyo Gakkai Zasshi 1994; 91:2151. [PMID: 7815736] [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: 01/27/2023]
Affiliation(s)
- R Izutani
- Second Department of Surgery, Kinki University, School of Medicine
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Takeda I, Igarashi S, Oyanagi H, Irisawa A, Mukai S, Shoji I, Sakuma H, Satho H, Sekine K, Kuroda M. [Two cases of asymptomatic primary biliary cirrhosis (PBC) accompanied with CREST syndrome]. Ryumachi 1994; 34:767-772. [PMID: 7974028] [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: 05/22/2023]
Abstract
Two cases of asymptomatic primary biliary cirrhosis (PBC) combining CREST syndrome. We have had encountered two primary biliary cirrhosis (PBC) patients overlapped with CREST syndrome. Case 1 was a 51-year-old female, who was suffering from Raynaud's phenomenon, esophageal dysmotility and sclerodactyly. Case 2 was a 67-year-old female, who was suffering from Raynaud's phenomenon, esophageal dysmotility, sclerodactyly and telangiectasia. They were free from itching and icterus. The histology of their biopsied liver specimen should stage I-II of Scheuer's classification. Their immunological findings showed anti-centromere antibody, (ACA) at a high titer (1 : 1280 dilution) and anti-mitochondrial antibody (AMA) at a low titer (1 : 40 dilution) positive in both. HLA DR types included DR2 and DRW8 in case 1, and did DR1 and DRW6 in case 2. Both patients are having good prognosis.
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Affiliation(s)
- I Takeda
- Department of Internal Medicine, Ohota Nishinouchi Hospital, Fukushima
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Ono T, Noguchi T, Inoue Y, Kusunoki M, Yamaguchi H, Oyanagi H. Study of the intermediate S-states for water oxidation in the normal and Ca-depleted photosynthetic oxygen-evolving enzyme by means of flash-induced X-ray absorption near edge structure spectroscopy. Biochem Soc Trans 1994; 22:331-5. [PMID: 7958319 DOI: 10.1042/bst0220331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- T Ono
- Solar Energy Research Group, Institute of Physical and Chemical Research (RIKEN), Saitama, Japan
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