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Tamura H, Tanida K, Abe D, Akikawa H, Araki K, Bhang H, Endo T, Fujii Y, Fukuda T, Hashimoto O, Imai K, Hotchi H, Kakiguchi Y, Kim JH, Kim YD, Miyoshi T, Murakami T, Nagae T, Noumi H, Outa H, Ozawa K, Saito T, Sasao J, Sato Y, Satoh S, Sawafta RI, Sekimoto M, Takahashi T, Tang L, Xia HH, Zhou SH, Zhu LH. Observation of a spin-flip M1 transition in 7(lambda)Li. PHYSICAL REVIEW LETTERS 2000; 84:5963-5966. [PMID: 10991099 DOI: 10.1103/physrevlett.84.5963] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2000] [Indexed: 05/23/2023]
Abstract
Using a large-acceptance germanium detector array (Hyperball), we have observed a spin-flip M1 gamma transition between the ground-state spin doublet of (7)(Lambda)Li (3/2(+)-->1/2(+)). The observed energy of 691.7+/-0.6(stat)+/-1.0(syst) keV provides crucial information on the strength of the spin-spin interaction between a Lambda and a nucleon. This is the first observation of well-identified hypernuclear gamma transitions using germanium detectors.
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52
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Ajimura S, Ikeda K, Ishikawa M, Kishimoto T, Okusu A, Shinkai N, Tanaka Y, Ejiri H, Nakano T, Manabe K, Nagae T, Noumi H, Sekimoto M, Shibata T, Hashimoto O, Maeda K, Takahashi T, Hasegawa T, Bhang H, Kim YD, Park H, Youn M. Asymmetry in the nonmesonic weak decay of polarized (5)(Lambda)He hypernuclei. PHYSICAL REVIEW LETTERS 2000; 84:4052-4055. [PMID: 10990608 DOI: 10.1103/physrevlett.84.4052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/1999] [Indexed: 05/23/2023]
Abstract
We have measured the asymmetric emission of protons from the nonmesonic decay of polarized (5)(Lambda)He produced by the (pi(+), K+) reaction. (5)(Lambda)He is an s-shell hypernucleus and its polarization is due to the Lambda. One expects to obtain direct information on the elementary weak Lambda-->p-->np process. The asymmetry parameter has been determined to be 0.24+/-0.22. The implication of the result is discussed.
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53
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Nagae T, Mukoyama M, Sugawara A, Mori K, Yahata K, Kasahara M, Suganami T, Makino H, Fujinaga Y, Yoshioka T, Tanaka I, Nakao K. Rat receptor-activity-modifying proteins (RAMPs) for adrenomedullin/CGRP receptor: cloning and upregulation in obstructive nephropathy. Biochem Biophys Res Commun 2000; 270:89-93. [PMID: 10733909 DOI: 10.1006/bbrc.2000.2390] [Citation(s) in RCA: 103] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Adrenomedullin (AM) is a potent vasorelaxing peptide originally isolated pheochromocytoma. Recently, a family of receptor-activity-modifying proteins (RAMPs 1-3) were identified in humans. Associated with the calcitonin receptor-like receptor (CRLR), RAMP2 or RAMP3 may function as the AM receptor. Here we cloned rat RAMP family, analyzed their distribution in rat tissues, and examined regulation of their expression in the kidney using an obstructive nephropathy model. Northern blot analyses revealed that the RAMP family genes are expressed in various tissues with different tissue specificity; RAMP1 is abundantly expressed in the brain, fat, thymus, and spleen, RAMP2 in the lung, spleen, fat, and aorta, while RAMP3 is most abundant in the kidney and lung. After ureteral obstruction, RAMP1, RAMP2, and CRLR gene expressions in the obstructed kidney were markedly upregulated, whereas RAMP3 expression was unchanged. Thus, RAMPs are regulated differently in obstructive nephropathy, suggesting their distinct roles in renal pathophysiology.
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Kanazawa S, Nagae T, Mukai N, Sugihara Y, Otani H, Tsunoda T. Pulmonary sequestration associated with aspergillosis. THE JAPANESE JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY : OFFICIAL PUBLICATION OF THE JAPANESE ASSOCIATION FOR THORACIC SURGERY = NIHON KYOBU GEKA GAKKAI ZASSHI 2000; 48:251-3. [PMID: 10824482 DOI: 10.1007/bf03218134] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
Abstract
Pulmonary sequestration involves an abnormal pulmonary tissue separated from the normal pulmonary parenchyma, not connected to the tracheobronchial tree and supplied by a systemic artery. A case of intralobar pulmonary sequestration is presented. Case; a 49-year-old male was admitted to our hospital complaining of fever, cough and sputum production. Sputum culture resulted in a large growth of Aspergillus niger. Angiography showed an abnormal blood supply from the abdominal aorta to the right lower lobe. Right lower lobectomy was performed. The postoperative courses are uneventful.
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Kanazawa S, Nagae T, Fukuda K, Katsu I, Mukai N, Sugihara Y, Otani H, Higami Y, Tsunoda T. Granulomatous lobular mastitis: difficulty of diagnosis. Int J Clin Oncol 2000; 5:57-61. [DOI: 10.1007/s101470050011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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56
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Kanazawa S, Nagae T, Fujiwara T, Fujiki R, Mukai N, Sugihara Y, Yamaguchi N, Ohtani H, Higami Y, Ikeda T, Tsunoda T. Malignant mesothelioma of the tunica vaginalis testis: report of a case. Surg Today 1999; 29:1106-10. [PMID: 10554340 DOI: 10.1007/s005950050654] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe herein the case of a 68-year-old man with malignant mesothelioma of the tunica vaginalis testis. The pathological diagnosis was based upon the clinical findings, gross and microscopic morphology, and special stains. Malignant mesothelioma is a rare tumor associated with asbestos exposure that can be effectively treated with orchidectomy via an inguinal approach.
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Ishikawa N, Fuchigami T, Tabata H, Kobayashi H, Sakai Y, Iizuka Y, Satou S, Nagae T, Kikuchi Y, Osamura S, Nakashima J, Yoshinaga H, Ishikawa T, Nakanishi M. [A case of lymphangioma of the small intestine]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1999; 96:959-63. [PMID: 10481485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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58
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Sambongi Y, Nagae T, Liu Y, Yoshimizu T, Takeda K, Wada Y, Futai M. Sensing of cadmium and copper ions by externally exposed ADL, ASE, and ASH neurons elicits avoidance response in Caenorhabditis elegans. Neuroreport 1999; 10:753-7. [PMID: 10208543 DOI: 10.1097/00001756-199903170-00017] [Citation(s) in RCA: 113] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We developed a quantitative assay for Caenorhabditis elegans avoidance behavior. This was then used to demonstrate that the worm moved away from toxic concentrations of Cd2+ and Cu2+, but not Ni2+, all ions that prevented development from larval to adult stages. Mutants that have structural defects in ciliated neurons (che-2 and osm-3) as well as worms with three laser-operated neurons (ADL, ASE, and ASH), showed no avoidance behavior from Cd2+ and Cu2+. These results suggest that the avoidance from Cd2+ and Cu2+ are mediated through multiple neural pathways including ADL, ASE, and ASH neurons. We hypothesize that the three sensing neurons provide increased accuracy of the sensory response and a survival advantage in the natural environment of the worm.
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Nagae T, Louie AY, Aizawa K, Ishimaru S, Wilson SE. Selective targeting and photodynamic destruction of intimal hyperplasia by scavenger-receptor mediated protein-chlorin e6 conjugates. THE JOURNAL OF CARDIOVASCULAR SURGERY 1998; 39:709-15. [PMID: 9972886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
BACKGROUND Photosensitizers, such as Photofrin II or Chloroaluminum-sulfonated phthalocyanine accumulate at sites of arterial injury. We have exploited this property to develop a model of photodynamic therapy (PDT) for intimal hyperplasia. The fluorescent probe [maleylated-bovine serum albumin (mal-BSA) conjugated with Texas-red] can be selectively targeted to intimal macrophages and smooth muscle cells recruited during formation of hyperplasia via a receptor-mediated mechanism. METHODS In this study, the photosensitizer chlorin e6 (Cle6) was conjugated to mal-BSA in a rat model of intimal hyperplasia, then tested the efficacy of the ligand conjugation to photosensitizer (mal-BSA/Cle6) in PDT of intimal hyperplasia. Arterial wall injury was produced by a balloon catheter pulled through the abdominal aorta of the rat to create a model of intimal hyperplasia. Fluorescent compounds were injected two weeks after injury. RESULTS Four hours after injection, the intensity of fluorescence achieved with injection of mal-BSA/Cle6 was higher for intimal hyperplastic lesions as compared to control areas. BSA-Cle6 unconjugated did not demonstrate such delivery. Two weeks after balloon injury, the injured aorta was irradiated externally with an argon pumped dye laser four hours following the photosensitizer injection. We employed two total radiant exposures: 20 J/cm2 and 40 J/cm2. Forty-eight hours after PDT, the arteries were examined histologically. Intimal hyperplastic cells were significantly reduced by PDT in the mal-BSA/Cle6 injected group (40-100%) versus the Cle6 group (0-20%). CONCLUSIONS Mal-BSA/Cle6 is taken up efficiently by a scavenger pathway, localizes in areas of intimal hyperplasia, and functions as a photosensitizer for PDT.
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MESH Headings
- Animals
- Aorta, Abdominal
- Aorta, Thoracic
- Aortic Diseases/drug therapy
- Aortic Diseases/metabolism
- Aortic Diseases/pathology
- Binding, Competitive
- Chlorophyllides
- Disease Models, Animal
- Drug Carriers
- Follow-Up Studies
- Hyperplasia
- Injections, Intravenous
- Male
- Microscopy, Fluorescence
- Photochemotherapy
- Porphyrins/administration & dosage
- Porphyrins/pharmacokinetics
- Porphyrins/therapeutic use
- Radiation-Sensitizing Agents/administration & dosage
- Radiation-Sensitizing Agents/pharmacokinetics
- Radiation-Sensitizing Agents/therapeutic use
- Rats
- Rats, Sprague-Dawley
- Serum Albumin, Bovine/administration & dosage
- Serum Albumin, Bovine/pharmacokinetics
- Serum Albumin, Bovine/therapeutic use
- Tunica Intima/drug effects
- Tunica Intima/metabolism
- Tunica Intima/pathology
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60
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Tanaka A, Nishida R, Sawai K, Nagae T, Shinkai S, Ishikawa M, Maeda K, Murata M, Seta K, Okuda J, Yoshida T, Sugawara A, Kuwahara T. [Traditional remedy-induced Chinese herbs nephropathy showing rapid deterioration of renal function]. NIHON JINZO GAKKAI SHI 1997; 39:794-7. [PMID: 9483946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A 19-year-old female was referred to our hospital for azotemia and anemia. She had been taking a health food for atopic dermatitis for about three years. Urinalysis showed proteinuria, glycosuria and microscopic hematuria. Generalized aminoaciduria was observed. Moreover, severe anemia, azotemia, hypokalemia and hypophosphatemia were also observed. Renal biopsy specimen disclosed hypocellular interstitial fibrosis and degeneration of the proximal tubular epithelial cells. No remarkable changes were observed in the glomeruli. Aristolochic acid was detected in the health food. From these findings, she was diagnosed as having Chinese herbs nephropathy (CHN). Although consumption of the food intake was stopped, her renal function deteriorated rapidly. Previously, we reported that certain kinds of Chinese herbal drugs contain aristolochic acid and that the drugs should be prohibited if aristolochic acid is identified. However, we experienced a patient of CHN arising from traditional remedy, which was not proved to be safe. It should be awared that health foods may contain aristolochic acid.
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Matake H, Matsui T, Yao T, Sakurai T, Hirai F, Nagae T, Takaki Y, Arima S, Imamura T. Beclomethasone dipropionate administration via cecostomy in ulcerative colitis. Am J Gastroenterol 1997; 92:1384-5. [PMID: 9260816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Beclomethasone dipropionate was administered via a cecostomy to four patients with active ulcerative colitis that was refractory to conventional glucocorticosteroid therapy. From a tube cecostomy, beclomethasone dipropionate solution was administered continuously throughout the day. Clinical manifestations, laboratory examinations, and endoscopic and/or radiographic findings markedly improved within 1-2 wk. A serial decrease in the index of disease activity was observed from the time administration began (mean score, 226.0) to 2 wk later (137.4 points). An excellent clinical response was recognized without any significant side effects, and the urgent need for total colectomy was avoided in all four patients.
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62
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Nagaya H, Tobita Y, Nagae T, Itokawa H, Takeya K, Halim AF, Abdel-Halim OB. Cytotoxic triterpenes from Cleome africana. PHYTOCHEMISTRY 1997; 44:1115-1119. [PMID: 9101665 DOI: 10.1016/s0031-9422(96)00681-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Eighteen dammarane-type triterpenes were obtained from the whole plant of Cleome africana by means of cytotoxic bioassay-directed fractionation. Twelve of them were novel compounds whose structures were elucidated by various spectroscopic methods.
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63
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Hasegawa T, Hashimoto O, Homma S, Miyachi T, Nagae T, Sekimoto M, Shibata T, Sakaguchi H, Takahashi T, Aoki K, Noumi H, Bhang H, Youn M, Gavrilov Y, Ajimura S, Kishimoto T, Ohkusu A, Maeda K, Sawafta R, Redwine RP. Spectroscopic study of Lambda 10B, Lambda 12C, Lambda 28Si, Lambda 89Y, Lambda 139La, and Lambda 208Pb by the ( pi +,K+) reaction. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1996; 53:1210-1220. [PMID: 9971056 DOI: 10.1103/physrevc.53.1210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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64
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Ishimaru S, Nagae T. [Intermittent claudication]. RYOIKIBETSU SHOKOGUN SHIRIZU 1996:444-6. [PMID: 9047899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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65
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Nagae T, Tsuchida H, Peng SK, Furukawa K, Wilson SE. Composite porosity of expanded polytetrafluoroethylene vascular prosthesis. CARDIOVASCULAR SURGERY (LONDON, ENGLAND) 1995; 3:479-84. [PMID: 8574529 DOI: 10.1016/0967-2109(95)94445-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Polytetrafluoroethylene (PTFE) prostheses were modified to produce two types of composite porosity PTFE grafts: type I--inner 60 microns/outer 20 microns and type II--inner 20 microns/outer 60 microns. These composite porosity PTFE designs were investigated for bleed through, graft healing and patency and compared with high porosity PTFE (60 microns) and standard PTFE (20 microns) grafts. The grafts were implanted into the carotid and femoral arteries of dogs and retrieved after 4, 12 and 18 weeks. Both composite porosity grafts showed significantly less bleed through than standard and high porosity grafts after reperfusion. In composite grafts, the 60-microns layer allowed fibrovascular tissue and histiocyte ingrowth from perigraft tissue, but the 20-microns layer did not. Neointima formation occurred earlier and endothelialization was more extensive in high porosity grafts, but seroma formation occurred in 25% of cases. In type I composite porosity grafts, smooth muscle cells of neointima migrated into the pores of the graft, providing a firmly anchored intima. Type II composite porosity grafts allowed better ingrowth of fibrovascular tissue at the outer layer from the perigraft tissue; however, endothelialization was not completed. Composite porosity grafts should be considered for evaluation in specific clinical situations.
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Nagae T, Tsuchida H, Ishimaru S, Wilson SE. Enhanced neointima formation and attachment on the high-porosity inner surface of modified PTFE vascular grafts. J INVEST SURG 1995; 8:235-42. [PMID: 8519739 DOI: 10.3109/08941939509031597] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Highly porous PTFE arterial prostheses form endothelium more extensively than the low-porosity grafts in clinical use, but are subject to seroma formation. PTFE vascular grafts were modified to produce a highly porous inner layer (inner layer 60 or 90 microns, outer layer 20 microns). The effect of this modified, composite design on the histology of graft healing was investigated. Twenty-five modified and 25 control grafts, each 4 mm in diameter by 5 cm in length, were implanted into carotid and femoral arteries of dogs. No late seroma formation was observed. After 12 and 18 weeks, the neointima of the grafts was examined by light microscopy and scanning electron microscopy. At 2- and 4-mm distances from the proximal and distal anastomoses, intimal thickness of the control grafts was 238.7 and 96.1 microns, respectively; for the modified grafts it was 236.2 and 202.8 microns at 18 weeks. Thus, the neotinima of modified grafts was thicker than that of control grafts when measured at 4 mm from the anastomoses. Neointimal coverage was less extensive in the control grafts than in modified grafts (26.8 +/- 6.1% vs. 58.8 +/- 13.2%; p < .05). Smooth muscle cells were seen on light-microscopy to penetrate the highly porous inner layer; on scanning electron microscopy, the PTFE fibrils appeared to anchor the neointima of the modified graft. The results suggest that modified PTFE grafts with an inner surface of 60 or 90 microns internodal distance have enhanced formation and anchoring of neointima while remaining impervious to blood.
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67
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Takahashi T, Sakaguchi H, Aoki K, Hasegawa T, Hashimoto O, Nagae T, Sekimoto M, Ohkusu A, Bhang H, Yu H, Gavrilov Y. pi --12C elastic scattering above the Delta resonance. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1995; 51:2542-2552. [PMID: 9970337 DOI: 10.1103/physrevc.51.2542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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68
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Hasegawa T, Hashimoto O, Homma S, Miyachi T, Nagae T, Sekimoto M, Shibata T, Sakaguchi H, Takahashi T, Aoki K, Noumi H, Bhang H, Youn M, Gavrilov Y, Ajimura S, Kishimoto T, Ohkusu A, Maeda K, Sawafta R, Redwine RP. Core-excited states of Lambda 12C hypernuclei formed in the ( pi +,K+) reaction. PHYSICAL REVIEW LETTERS 1995; 74:224-227. [PMID: 10058334 DOI: 10.1103/physrevlett.74.224] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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69
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Fuse Y, Kakinuma S, Mukai H, Nagae T, Kanemaki M. [Correlation between fetal growth and platelet function in normal pregnancy]. NIHON SANKA FUJINKA GAKKAI ZASSHI 1994; 46:1-6. [PMID: 8308398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Various interpretations have been attempted, but no definitive theory has yet been established as to the etiology of the low-birth-weight infant. We carried out the present study in an attempt to explore the relationship between platelet functions and fetal growth during normal pregnancy. For this purpose, we made a retrospective study of 130 pregnant women aged 23-35 with no clinical abnormalities throughout pregnancy or at delivery. Blood samples were taken at 29-30 weeks of gestation (referred to as the 2nd trimester) and 37-38 weeks of gestation (referred to as the 3rd trimester). The cases studied were divided into two groups: i) those with a birth weight of under 2,500g (n = 32), and ii) those with a birth weight of over 2,500g (n = 98). In these two groups, we studied the platelet functions in maternal blood in the 2nd and 3rd trimesters. The following results were obtained: 1) In the 2nd to 3rd trimester, the platelet count showed no significant variation with the birth weight. 2) In the 2nd to 3rd trimester, the platelet aggregation was found to be moderately depressed in cases with a birth weight of under 2,500g, while it was found to be moderately activated in cases with a birth weight of over 2,500g. 3) In the 2nd to 3rd trimester, platelet factor 4 was significantly lower (p < 0.005) in cases with a birth weight of under 2,500g, while it was moderately higher in cases with a birth weight of over 2,500g.(ABSTRACT TRUNCATED AT 250 WORDS)
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70
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Okada A, Inomata K, Nagae T. Spontaneous cortical granule release and alteration of zona pellucida properties during and after meiotic maturation of mouse oocytes. Anat Rec (Hoboken) 1993; 237:518-26. [PMID: 8311265 DOI: 10.1002/ar.1092370412] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Exocytosis of cortical granules (CGs) and the concomitant electron density changes of the zona pellucida (ZP) in the absence of sperm penetration were investigated in mouse oocytes processed with tannic acid containing fixation at various stages during and after maturation. After fusion of the CG membrane with the plasma membrane, the CG contents became very electron-dense, due to tannic acid. CG material is seen to be made up of coarse granular structures which gradually change to fine amorphous structures, which accumulate within the developing perivitelline space (PVS). When the coarse CG material attaches to the ZP, small domains exhibiting higher electron density appeared, and the number of these domains gradually increased. Release of CG was observed from metaphase I through metaphase II. In metaphase I to immediately after ovulation, the higher electron density of ZP and CG release was restricted to the cortical area overlying the meiotic spindle. Finally, the CG-free domain formed itself overlying the meiotic spindle as a result of CG release. However, in oviductal ova, CG release additionally occurred in the hemisphere opposite the spindle. At this stage the entire PVS was well developed and contained numerous fine electron-dense materials. Moreover, the inner half of the ZP increased in electron density as well. This change in electron density of the ZP might be associated with released CG material. These results suggest that the "partial cortical reaction" may play an important role in conditioning the ZP prior to ZP reaction.
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71
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Cameron BL, Tsuchida H, Connall TP, Nagae T, Furukawa K, Wilson SE. High porosity PTFE improves endothelialization of arterial grafts without increasing early thrombogenicity. THE JOURNAL OF CARDIOVASCULAR SURGERY 1993; 34:281-5. [PMID: 8227106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE High porosity (HP) (90 micron internodal distance) PTFE grafts were implanted into the carotid and femoral arteries of dogs to investigate early thrombogenicity, patency, and endothelialization. EXPERIMENTAL DESIGN Standard PTFE (STD) grafts (30 micron internodal distance) were used as controls. 12 HP and 12 STD grafts were implanted into 6 dogs. Indium-111 labeled platelets were infused intravenously after graft implantation. A graft platelet accumulation index (GPAI) was calculated as the ratio of radioactive emission from the PTFE grafts excised at 48 hours to the emission from a native arterial segment. Another 12 HP and 12 STD grafts were implanted into femoral and carotid arteries to assess patency and endothelialization at 4 and 18 weeks. RESULTS There was no significant difference in the GPAI of the HP and STD grafts at either the carotid (HP = 31.5 +/- 9.7, STD = 30.6 +/- 11.8; p > 0.05) or femoral (HP = 34.0 +/- 5.0, STD = 31.5 +/- 7.9; p > 0.05) positions. Combined data (carotid and femoral HP vs. carotid and femoral STD) also did not demonstrate a difference in GPAI (HP = 32.8 +/- 7.5, STD = 31.1 +/- 9.6; p > 0.05). Patency rates were the same at 4 weeks (75%), but greater in the HP grafts at 18 weeks (HP = 75%, STD = 37%; p > 0.05). No difference was noted in the percentage of graft endothelialization at 4 weeks (HP = 5.2 +/- 5.8, STD = 5.0 +/- 4.0; p > 0.05), however, at 18 weeks the HP graft had significantly more endothelial coverage compared to STD grafts (HP = 75.2 +/- 13.9, STD = 22.6 +/- 9.5; p < 0.01). CONCLUSIONS Given that HP PTFE is no more thrombogenic than STD PTFE, and that it provides superior endothelialization, HP grafts should continue to be developed and studied for potential clinical use.
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72
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Yamamoto S, Shida T, Miyaji S, Santsuka H, Fujise H, Mukawa K, Furukawa E, Nagae T, Naiki M. Changes in serum C-reactive protein levels in dogs with various disorders and surgical traumas. Vet Res Commun 1993; 17:85-93. [PMID: 8212527 DOI: 10.1007/bf01839236] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The serum levels of C-reactive protein (CRP) produced as an inflammatory response in dogs with various disorders and surgical traumas were measured by enzyme-linked immunoabsorbent assay and slide reversed passive latex agglutination test (RPLA). The CRP levels were greatly increased 1-2 days after surgery in most of the dogs (n = 29) subjected to surgery. These levels had markedly decreased by the time the sutures were removed. In dogs with various disorders (n = 58), the serum CRP levels at first diagnosis were high in infectious diseases. In dogs from which paired serum samples were examined, the serum CRP usually showed a decrease with improvement in the condition (n = 11) or a terminal increase (n = 4) but, conversely, some showed an increase with improvement in the condition (n = 3).
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73
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Tanimori T, Minami S, Nagae T, Takahashi T, Miyagi T. Development of microstrip gas chamber and application to imaging gamma-ray detector. ACTA ACUST UNITED AC 1992. [DOI: 10.1117/12.138606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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74
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Osada T, Nagae T, Hirayama T, Ishimaru S, Furukawa K. [A case of ascending aortic dissection after aortic valve replacement in congenital bicuspid aortic valve]. [ZASSHI] [JOURNAL]. NIHON KYOBU GEKA GAKKAI 1992; 40:1928-32. [PMID: 1431414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Congenital bicuspid aortic valve is a risk factor of aortic dissection, but the case is rare in Japan. Several reports described ascending aortic aneurysm after aortic valve replacement. In these reports, most of aneurysms were false aneurysm, but the cases of ascending aortic dissection were rare. In this case, dissecting aneurysm of the ascending aorta occurred 4 years after aortic valve replacement, which was performed with mechanical prosthesis because of infective endocarditis, and it was repaired successfully by the modified Cabrol's method. This case was congenital bicuspid aortic valve, and had already been complicated with moderate aortic dilatation in the ascending aorta. In patients of congenital bicuspid aortic valve with aortic dilatation, consideration of complete replacement of the ascending aorta with aortic valve replacement is important.
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Urano Y, Oura H, Sakaki A, Nagae H, Matsumoto K, Fukuhara K, Nagae T, Arase S, Ninomiya Y, Nakanishi H. Immunohistological analysis of P53 expression in human skin tumors. J Dermatol Sci 1992; 4:69-75. [PMID: 1419981 DOI: 10.1016/0923-1811(92)90061-f] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The p53 expression in various skin tumors was immunohistologically evaluated using two mouse monoclonal anti-p53 antibodies, PAb421 and PAb1801. The p53 expression was not detected in the normal epidermal cells. Nuclear staining suggested that the p53 expression was observed in 10 of 26 squamous cell carcinomas (SCCs) from 24 patients, in one undifferentiated carcinoma, one proliferating trichilemmal cyst, one malignant proliferating trichilemmal tumor and in one metastatic carcinoma of breast cancer. None off four cases of Bowen's disease (SCC in situ) showed nuclear staining. In the SCCs, five of 20 primary lesions, three of four recurrent lesions and both of two metastatic lesions had positive nuclei. There was one case of SCC in which a primary lesion was negative but a recurrent lesion was positive. Thus, p53 expression was more frequently observed in SCCs at more clinically advanced stages. This may suggest that p53 has some relevance to progression of SCC. Nuclear staining was not detected in any of the following cases: two cases of seborrheic keratosis, one eccrine poroma, one keratoacanthoma, 11 basal cell epitheliomas, two mammary Paget's disease, three genital Paget's disease, one sebaceous carcinoma, four malignant melanomas, six lymphomas, two leukemia cutis and two angiosarcomas.
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