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Cesca F, Yabe A, Spencer-Dene B, Arrigoni A, Al-Qatari M, Henderson D, Phillips H, Koltzenburg M, Benfenati F, Schiavo G. Kidins220/ARMS is an essential modulator of cardiovascular and nervous system development. Cell Death Dis 2011; 2:e226. [PMID: 22048169 PMCID: PMC3223693 DOI: 10.1038/cddis.2011.108] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The growth factor family of neurotrophins has major roles both inside and outside the nervous system. Here, we report a detailed histological analysis of key phenotypes generated by the ablation of the Kinase D interacting substrate of 220 kDa/Ankyrin repeat-rich membrane spanning (Kidins220/ARMS) protein, a membrane-anchored scaffold for the neurotrophin receptors Trk and p75NTR. Kidins220 is important for heart development, as shown by the severe defects in the outflow tract and ventricle wall formation displayed by the Kidins220 mutant mice. Kidins220 is also important for peripheral nervous system development, as the loss of Kidins220 in vivo caused extensive apoptosis of DRGs and other sensory ganglia. Moreover, the neuronal-specific deletion of this protein leads to early postnatal death, showing that Kidins220 also has a critical function in the postnatal brain.
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Affiliation(s)
- F Cesca
- Department of Neuroscience and Brain Technologies, The Italian Institute of Technology, Genoa, Italy.
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Cesca F, Yabe A, Spencer-Dene B, Scholz-Starke J, Medrihan L, Maden CH, Gerhardt H, Orriss IR, Baldelli P, Al-Qatari M, Koltzenburg M, Adams RH, Benfenati F, Schiavo G. Kidins220/ARMS mediates the integration of the neurotrophin and VEGF pathways in the vascular and nervous systems. Cell Death Differ 2011; 19:194-208. [PMID: 22048155 DOI: 10.1038/cdd.2011.141] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Signaling downstream of receptor tyrosine kinases controls cell differentiation and survival. How signals from different receptors are integrated is, however, still poorly understood. In this work, we have identified Kidins220 (Kinase D interacting substrate of 220 kDa)/ARMS (Ankyrin repeat-rich membrane spanning) as a main player in the modulation of neurotrophin and vascular endothelial growth factor (VEGF) signaling in vivo, and a primary determinant for neuronal and cardiovascular development. Kidins220(-/-) embryos die at late stages of gestation, and show extensive cell death in the central and peripheral nervous systems. Primary neurons from Kidins220(-/-) mice exhibit reduced responsiveness to brain-derived neurotrophic factor, in terms of activation of mitogen-activated protein kinase signaling, neurite outgrowth and potentiation of excitatory postsynaptic currents. In addition, mice lacking Kidins220 display striking cardiovascular abnormalities, possibly due to impaired VEGF signaling. In support of this hypothesis, we demonstrate that Kidins220 constitutively interacts with VEGFR2. These findings, together with the data presented in the accompanying paper, indicate that Kidins220 mediates the integration of several growth factor receptor pathways during development, and mediates the activation of distinct downstream cascades according to the location and timing of stimulation.
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Affiliation(s)
- F Cesca
- Department of Neuroscience and Brain Technologies, The Italian Institute of Technology, via Morego 30, 16163 Genoa, Italy.
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Nagai H, Yabe A, Mine N, Mikami I, Fujiwara H, Terada Y, Hirano A, Tsuneizumi M, Yokota T, Emi M. Down-regulation in human cancers of DRHC, a novel helicase-like gene from 17q25.1 that inhibits cell growth. Cancer Lett 2003; 193:41-7. [PMID: 12691822 DOI: 10.1016/s0304383502006882] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Frequent observations of allelic loss in chromosomal band 17q25.1 in a variety of human cancers have suggested that one or more tumor suppressor genes are normally present in this region. Moreover, a locus responsible for hereditary focal non-epidermolytic palmoplantar keratoderma (tylosis oesophageal cancer; TOC), a condition associated with esophageal cancer, has been mapped to the same band. During efforts to sequence, by shot-gun methods, a 1 Mb target region that we had defined as the DNA segment harboring the putative tumor suppressor gene(s) involved in these events, we identified a novel cDNA, DRHC (down-regulated in human cancers), that showed reduced expression in 28 of 95 (29%) cell lines derived from a variety of human cancers. The full-length cDNA, 6275 bp long, was expressed predominantly in thymus and brain. The predicted 1942-amino-acid product exhibited significant sequence homology to yeast enzymes belonging to the DEAD-helicase superfamily, and appeared to be a Uvr/Rep helicase with a DEXDc consensus domain. Transfection of a DRHC expression vector inhibited growth of cancer cells in liquid medium or soft agar. The results suggest that loss of expression of DRHC may play a role in human carcinogenesis.
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MESH Headings
- Blotting, Northern
- Brain/metabolism
- Cell Division
- Chromosomes, Human, Pair 17
- Cloning, Molecular
- DNA/metabolism
- DNA Helicases/biosynthesis
- DNA Helicases/genetics
- DNA Helicases/metabolism
- DNA, Complementary/metabolism
- Databases as Topic
- Down-Regulation
- Esophageal Neoplasms/genetics
- Esophageal Neoplasms/metabolism
- Genes, Tumor Suppressor
- Genetic Vectors
- Humans
- Models, Genetic
- Neoplasm Proteins
- Neoplasms/genetics
- Neoplasms/metabolism
- Polymorphism, Single-Stranded Conformational
- Protein Structure, Tertiary
- RNA Helicases
- Reverse Transcriptase Polymerase Chain Reaction
- Thymus Gland/metabolism
- Time Factors
- Transfection
- Tumor Cells, Cultured
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Affiliation(s)
- H Nagai
- Department of Molecular Biology, Institute of Gerontology, Nippon Medical School. 1-396, Kosugi-cho, Nakahara-ku, Kawasaki 211-0063, Japan
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4
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Harada H, Nagai H, Mine N, Terada Y, Fujiwara H, Mikami I, Tsuneizumi M, Yabe A, Miyazaki K, Yokota T, Imoto I, Inazawa J, Emi M. Molecular cloning, tissue expression, and chromosomal assignment of a novel gene encoding a subunit of the human signal-recognition particle. J Hum Genet 2001; 46:70-5. [PMID: 11281415 DOI: 10.1007/s100380170111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Human cancers derived from breast, esophageal, or ovarian tissues frequently show allelic losses on chromosome band 17q25. Moreover, a locus responsible for hereditary focal nonepidermolytic palmoplantar keratoderma, a condition associated with esophageal cancer (TOC; tylosis with oesophageal cancer), has been mapped to the same band. During efforts to sequence, by shotgun methods, a 1-Mb target region that we had defined as the DNA segment harboring the putative tumor suppressor gene(s) involved in these events, we identified a novel cDNA. The full-length cDNA is 2495bp long and is expressed predominantly in skeletal muscle, heart, kidney, and placenta. The predicted product, a 627-amino-acid protein, exhibited significant sequence homology to the canine 68-kd subunit of the signal recognition particle that has been implicated in the transport of secreted and membrane proteins to the endoplasmic reticulum for proper processing. We confirmed the location of this gene at chromosome 17q25.1 by radiation-hybrid mapping and by fluorescence in situ hybridization.
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Affiliation(s)
- H Harada
- Department of Molecular Biology, Institute of Gerontology, Nippon Medical School, Japan
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Yokota T, Nagai H, Harada H, Mine N, Terada Y, Fujiwara H, Yabe A, Miyazaki K, Emi M. Identification, tissue expression, and chromosomal position of a novel gene encoding human ubiquitin-conjugating enzyme E2-230k. Gene 2001; 267:95-100. [PMID: 11311559 DOI: 10.1016/s0378-1119(01)00407-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Through large-scale human genome mapping and sequencing of a region at chromosome 17q25.1 that is of particular interest because genes associated with breast, ovarian, and esophageal cancer are likely to be located there, we isolated the cDNA of a novel member of the family of ubiquitin-conjugating enzymes. The predicated peptide showed 97% identity in amino-acid sequence to murine ubiquitin-conjugating enzyme E2-230k (Mus UBE2-230k). The human cDNA consisted of 4878 nucleotides with an open reading frame encoding 1138 amino acids; the approximately 5 kb transcript was expressed predominantly in skeletal muscle and heart. The predicted UBE2-230k peptide contained a motif typical of the UBC domain that has been implicated in the ubiquitin-dependent proteolytic system and related pathways.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Blotting, Northern
- Chromosome Mapping
- Chromosomes, Human, Pair 17/genetics
- Cloning, Molecular
- DNA/chemistry
- DNA/genetics
- DNA, Complementary/chemistry
- DNA, Complementary/genetics
- Female
- Gene Expression
- Humans
- Ligases/genetics
- Molecular Sequence Data
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Sequence Alignment
- Sequence Analysis, DNA
- Sequence Homology, Amino Acid
- Tissue Distribution
- Ubiquitin-Conjugating Enzymes
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Affiliation(s)
- T Yokota
- Department of Molecular Biology, Institute of Gerontology, Nippon Medical School, 1-396, Kosugi-cho, Nakahara-ku, 211-8533, Kawasaki, Japan
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Horinaka S, Hara S, Tsuchiya N, Yabe A, Asakawa H, Yagi H, Mori Y, Matsuoka H. Alternans of ventricular gradient during percutaneous transluminal coronary angioplasty. J Electrocardiol 2001; 34:135-9. [PMID: 11320461 DOI: 10.1054/jelc.2001.23114] [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] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We evaluated the influence of local myocardial ischemia induced by acute coronary occlusion during percutaneous transluminal coronary angioplasty (PTCA) on the ventricular gradients (VG) and investigated whether 2:1 alternans of VG occurs. Twenty-seven patients with angina pectoris, who had one-vessel coronary artery stenosis, were studied. The VG of each consecutive heartbeat before, during, and after PTCA over a 22-second interval was calculated using a microcomputer. The standard deviation and coefficient of variation of magnitude were used as indices of VG variability. Frequency-domain analysis of time series consisting of beat-to-beat VG magnitude for a 22-second interval was also performed by the maximum entropy method. The standard deviation and coefficient of variation of VG magnitude during PTCA were significantly greater than those before and after PTCA (P <.01, P <.01, respectively), and the indices before PTCA were also significantly greater than those after PTCA (P <.05). The maximum power spectrum peaks around 0.5 cycles/beat during PTCA were significantly greater than those after PTCA (P <.01); this suggests that the enhancement of VG alternans is reflected by 2:1 alternans of the action potential in the acute local ischemic myocardium during PTCA.
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Affiliation(s)
- S Horinaka
- Department of Hypertension and Cardiorenal Medicine, Dokkyo University School of Medicine, Tochigi, Japan.
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7
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Asakawa H, Nishikimi T, Suzuki T, Hara S, Tsubokou Y, Yagi H, Yabe A, Tsuchiya N, Horinaka S, Kangawa K, Matsuoka H. Elevation of two molecular forms of adrenomedullin in plasma and urine in patients with acute myocardial infarction treated with early coronary angioplasty. Clin Sci (Lond) 2001; 100:117-26. [PMID: 11115426] [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: 02/18/2023]
Abstract
Adrenomedullin (AM) has vasodilatory, diuretic and natriuretic actions. Two molecular forms of AM circulate in human plasma: an active, mature form of AM (AM-m) and an intermediate, inactive, glycine-extended form of AM (AM-Gly). In the present study we investigated the pathophysiological significance of the two molecular forms of AM in plasma and urine in patients with acute myocardial infarction. We serially measured venous and arterial plasma levels and urinary excretion of AM-m, AM-Gly and total AM (Am-T; =AM-m+AM-Gly) over 2 weeks using our recently developed immunoradiometric assay in 26 consecutive patients with acute myocardial infarction and in age-matched normal controls, and studied the relationships between AM levels and clinical parameters. Plasma AM-m, AM-Gly and AM-T levels were increased on admission in patients with acute myocardial infarction compared with age-matched normal controls. Levels of AM-m, AM-Gly and AM-T in plasma reached a peak 24 h after the onset of symptoms. Plasma AM-m, AM-Gly and AM-T levels were significantly correlated with plasma levels of brain natriuretic peptide and pulmonary arterial pressure. Plasma AM-Gly levels in the vein were similar to those in the artery, whereas plasma AM-m levels were significantly lower in the artery than in the vein. Urinary excretion of AM-m, AM-Gly and AM-T was also increased on admission, and reached a peak at 12 h after the onset of symptoms. Urinary excretion of AM-m and AM-Gly was significantly correlated with urinary sodium excretion. The AM-m/AM-T ratio was significantly higher in the urine than in the vein or artery. AM-m levels were significantly correlated with AM-Gly levels in both the urine and plasma; however, there were no significant correlations between plasma and urinary AM levels. The results suggest that levels of both molecular forms of AM are increased in the urine as well as in the plasma in the acute phase of myocardial infarction. Since AM exerts potent cardiovascular and renal effects, increased concentrations of AM in plasma and urine in the acute phase of myocardial infarction may be involved in the defence mechanism against further elevations of peripheral and pulmonary vascular resistance and oliguria in acute myocardial infarction.
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Affiliation(s)
- H Asakawa
- Department of Hypertension and Cardiorenal Medicine, Dokkyo University School of Medicine, Mibu, Tochigi 321-0293, Japan
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8
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Yabe A, Ohkawa S, Watanabe C, Chida K, Kuboki K. [Clinicopathologic study of calcified aortic valve stenosis in the aged, and evaluation of the indications for percutaneous aortic balloon valvuloplasty]. J Cardiol 2000; 36:311-9. [PMID: 11107553] [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: 02/18/2023]
Abstract
OBJECTIVES We performed clinicopathologic study of 56 aged patients with calcified aortic valve stenosis and investigated the indications for percutaneous aortic balloon valvuloplasty. METHODS The patients were 24 men and 32 women with a mean age of 81.9 years, who were classified into the following 3 types by etiology: 33 patients (58.9%) had senile aortic stenosis, 10 patients (17.9%) had bicuspid aortic stenosis, and 13 patients (23.2%) had rheumatic aortic stenosis. The sites of calcification were divided into the following 3 categories: cusp bases (base type), free edges (edge type), and both bases and edges (mixed type). RESULTS Among the 33 patients with senile aortic stenosis, 10 (30.3%) had calcification of base type, 2 (6.1%) of edge type and 21 (63.6%) of mixed type. Among the 10 patients with bicuspid aortic stenosis, one (10%) had calcification of base type and 9 (90%) of mixed type. Among the 13 patients with rheumatic aortic stenosis, 3 (23.1%) had calcification of edge type and 10 (76.9%) of mixed type. In addition, 2 or 3 commissures were fused in patients with rheumatic aortic stenosis. The cusps of the aortic valves in the bicuspid type were the most severely thickened among the 3 groups. Soft X-ray imaging showed the aortic valves of rheumatic aortic stenosis were the most severely calcified (calcification score: 2.4), followed by those of bicuspid aortic stenosis (1.9) and senile aortic stenosis (1.6). CONCLUSIONS Percutaneous aortic balloon valvuloplasty is most suitable in patients with calcified senile aortic stenosis because of the milder calcification, compared with those of the other 2 types.
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Affiliation(s)
- A Yabe
- Division of Cardiology, Tokyo Metropolitan Geriatric Hospital
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9
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Hara S, Horinaka S, Tsuchiya N, Yabe A, Asakawa H, Yagi H. Cardiac troponin I level correlates with chronic-phase left ventricular function after successful direct percutaneous transluminal coronary angioplasty in patients with acute myocardial infarction. J Cardiol 2000; 36:303-10. [PMID: 11107552] [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: 02/18/2023]
Abstract
OBJECTIVES The relationships between cardiac troponin I, various biochemical markers, and chronic-phase left ventricular ejection fraction (LVEF) after successful direct percutaneous transluminal coronary angioplasty (PTCA) were examined in 36 patients with acute myocardial infarction. METHODS Biochemical markers were measured on admission, immediately after, and from 6 hours to 9 days after PTCA. RESULTS The time to peak values were: creatine kinase-MB 9.7 hours, cardiac troponin I 9.8 hours, myoglobin 10.7 hours, creatine kinase 10.6 hours, cardiac troponin T 18.6 hours, and myosin light chain 68.9 hours. Cardiac troponin T, cardiac troponin I and myosin light chain levels were elevated over 9 days after successful direct PTCA. Chronic-phase LVEF inversely correlated with peak values of creatine kinase-MB (r = -0.519, p < 0.01), cardiac troponin T (r = -0.500, p < 0.01), cardiac troponin I (r = -0.441, p < 0.05) and creatine kinase (r = -0.411, p < 0.05). The values of cardiac troponin I, cardiac troponin T, creatine kinase and creatine kinase-MB at each sampling point were significantly inversely related to chronic-phase LVEF. The value of cardiac troponin I at each time point for 7 days correlated well with chronic-phase LVEF. CONCLUSIONS Cardiac troponin I has high specificity for predicting long-term cardiac function after successful direct PTCA when early values are unavailable.
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Affiliation(s)
- S Hara
- Department of Medicine, Dokkyo University School of Medicine, Tochigi
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11
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Furutani H, Fukumura H, Masuhara H, Lippert T, Yabe A. Laser-Induced Decomposition and Ablation Dynamics Studied by Nanosecond Interferometry. 1. A Triazenopolymer Film. J Phys Chem A 1997. [DOI: 10.1021/jp971081x] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- H. Furutani
- Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan, and Laser Induced Reaction Laboratory, National Institute of Materials and Chemical Research, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - H. Fukumura
- Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan, and Laser Induced Reaction Laboratory, National Institute of Materials and Chemical Research, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - H. Masuhara
- Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan, and Laser Induced Reaction Laboratory, National Institute of Materials and Chemical Research, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - T. Lippert
- Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan, and Laser Induced Reaction Laboratory, National Institute of Materials and Chemical Research, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - A. Yabe
- Department of Applied Physics, Osaka University, Suita, Osaka 565, Japan, and Laser Induced Reaction Laboratory, National Institute of Materials and Chemical Research, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
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Takahashi M, Horinaka S, Takada M, Matsumoto N, Tsuchiya N, Yabe A, Onoda M, Murate J, Masuda T, Ishikawa K, Takeda K, Matsuoka H. [Long-term beneficial effect of dual chamber pacing in a patient with hypertrophic obstructive cardiomyopathy]. J Cardiol 1997; 29:345-52. [PMID: 9211094] [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: 02/04/2023]
Abstract
Dual chamber (DDD) pacing therapy was effective to reduce the left ventricular outflow tract pressure gradient for a long time in a patient with pharmacotherapy-resistant hypertrophic obstructive cardiomyopathy. A 52-year-old man with pharmacotherapy-resistant pressure gradient was treated by a DDD pacemaker implantation, because the pressure gradient was proved to be reduced (94-->16 mmHg) by transient DDD pacing with an atrioventricular delay of 50 msec. Hemodynamics and ventricular wall thickness were serially observed after the implantation for 2 years. The pressure gradient progressively decreased during the pacing period, at 4 months and 2 years follow-up, (10-->2 mmHg) and during the sinus rhythm period (60-->25 mmHg), and left ventricular ejection fraction and end-diastolic volume index were increased. Although the ventricular wall thickness remained constant, the systolic anterior motion of the mitral valve and A/E were reduced during the pacing period in the echocardiography. During the acute effect of DDD pacing, the pressure gradient reduction seemed to be related to dilatation of the left ventricular outflow tract induced by a change of contraction modality of the intraventricular septum. Improved left ventricular diastolic function may contribute to the pressure gradient reduction during extended periods of pacing therapy.
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Affiliation(s)
- M Takahashi
- Department of Medicine, Dokkyo University School of Medicine, Tochigi
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13
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Affiliation(s)
- T. Lippert
- National Institute of Materials and Chemical Research, Laser Induced Reaction Lab, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - T. Nakamura
- National Institute of Materials and Chemical Research, Laser Induced Reaction Lab, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - H. Niino
- National Institute of Materials and Chemical Research, Laser Induced Reaction Lab, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
| | - A. Yabe
- National Institute of Materials and Chemical Research, Laser Induced Reaction Lab, Higashi 1-1, Tsukuba, Ibaraki 305, Japan
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Kirigaya H, Aizawa T, Ogasawara K, Sato H, Nagashima K, Onoda M, Ogawa K, Yabe A, Kato K. Incidence of acetylcholine-induced spasm of coronary arteries subjected to balloon angioplasty. Jpn Circ J 1993; 57:883-90. [PMID: 8371481 DOI: 10.1253/jcj.57.883] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
To examine the vasospastic activity of coronary arteries which have been subjected to previous balloon angioplasty, we conducted an acetylcholine provocative test at diagnostic catheterization in 147 consecutive patients. All patients underwent successful elective angioplasty and had follow-up angiography 1 to 6 months after the procedure. Sixty-two patients had a history of prior myocardial infarction and 43 patients had multivessel coronary artery disease. Angioplasty was performed on 176 vessels. Incremental doses of acetylcholine (25 micrograms, 50 micrograms, 100 micrograms) were injected into the right and left coronary arteries over a period of 1 min. The incidence of coronary spasm of arteries which had been subjected to angioplasty was 44%. Angiographic restenosis was observed in 59 patients (40%). There was no correlation between the occurrence of coronary spasm and the presence of restenosis. The maximal dose of injected acetylcholine was smaller in patients with positive evidence of spasm than in patients with negative evidence of spasm (55 +/- 27 micrograms vs 82 +/- 28 micrograms, p < 0.01). In patients with single vessel coronary artery disease, the incidence of spasm of the contralateral artery, i.e. the artery without angioplasty, was lower than that of the artery subjected to angioplasty (22% vs 46%, p < 0.01). Thus, the data suggest that coronary arteries which have been previously subjected to angioplasty have enhanced vasospastic activity in response to acetylcholine.
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Ohana T, Ouchi A, Moriyama H, Yabe A. Preparation of polykis azobenzene by photolysis of 1,4-diazidobenzene with excimer laser radiation. J Photochem Photobiol A Chem 1993. [DOI: 10.1016/1010-6030(93)85089-q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Kitano Y, Ashida T, Yabe A. The structure of 1,6-dimethylphenazine: a photoproduct of 2,2'-diazido-6,6'-dimethylbiphenyl. Acta Crystallogr Sect B 1981. [DOI: 10.1107/s0567740881006183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Fujita M, Iwamoto J, Kondo M, Yabe A, Akaishi J. Correlation between ingestion, accumulation and excretion of fallout 90Sr in man on a long-term scale. Health Phys 1969; 17:41-50. [PMID: 5798577 DOI: 10.1097/00004032-196907000-00005] [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] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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19
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Fujita M, Iwamoto J, Kondo M, Yabe A. Day-to-day variation of dietary intake and urinary excretion of fallout 137Cs and stable K in man. Health Phys 1969; 16:185-195. [PMID: 5772182 DOI: 10.1097/00004032-196902000-00008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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