201
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Mukai M, Torikata C, Iri H, Mikata A, Sakamoto T, Hanaoka H, Shinohara C, Baba N, Kanaya K, Kageyama K. Alveolar soft part sarcoma. An elaboration of a three-dimensional configuration of the crystalloids by digital image processing. THE AMERICAN JOURNAL OF PATHOLOGY 1984; 116:398-406. [PMID: 6476077 PMCID: PMC1900467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
As an initial step to elucidate the nature of the unique characteristics of the crystalloids of alveolar soft part sarcoma, a three-dimensional model of the crystalloids was prepared by digital image analysis of electron micrographs by computer. It was revealed that occult periodicities are present at two intervals, 60 A and 380 A, in the filamentous structure of the crystalloid; and it was also revealed by the observation of each cross-section that two globular substances with a diameter of 60 A are arranged in a dumbbell pattern in each filamentous structure. The model prepared based on these data showed the double strands crossing each other at intervals of 380 A, each of which consists of successive arrangement of the globular substances with a diameter of 60 A. This structure is clearly similar to that of actin. The similarities and differences between these results and the well-known studies of the organization of naturally occurring actin bundles are discussed.
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202
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Sato H, Watanuki S, Iwanaga K, Baba N. Seasonal variation of body composition in women. THE ANNALS OF PHYSIOLOGICAL ANTHROPOLOGY = SEIRI JINRUIGAKU KENKYUKAI KAISHI 1984; 3:152-6. [PMID: 6537173 DOI: 10.2114/ahs1983.3.152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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203
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Iwanaga K, Nariai T, Koba T, Takami I, Baba N. [Effect of ambient temperature on the relationship between increase in rectal temperature and body build during submaximal work]. THE ANNALS OF PHYSIOLOGICAL ANTHROPOLOGY = SEIRI JINRUIGAKU KENKYUKAI KAISHI 1984; 3:31-7. [PMID: 6537158 DOI: 10.2114/ahs1983.3.31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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204
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Baba N, Quattrochi JJ, Reiner CB, Adrion W, McBride PT, Yates AJ. Possible role of the brain stem in sudden infant death syndrome. JAMA 1983; 249:2789-91. [PMID: 6842786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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205
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Baba N, Suzuki T, Tobe T. [The pancreatico-trophic effect of obstructive jaundice in rats]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1982; 79:2299-304. [PMID: 6187951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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206
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Baba N, Yoshino T. Electrolytic synthesis and properties of potassium oxalatotungstate (V). J APPL ELECTROCHEM 1982. [DOI: 10.1007/bf00614989] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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207
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Baba N. [Studies of trophic effects on the pancreas in rats. I. Trophic effect of trypsin inhibitor on the remnant pancreas after major pancreatectomy. II. Influence of obstructive jaundice on pancreatico-trophic effect of trypsin inhibitor. III. Trophic effect of obstructive jaundice alone to the pancreas]. NIHON GEKA HOKAN. ARCHIV FUR JAPANISCHE CHIRURGIE 1982; 51:732-60. [PMID: 6186220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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208
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Baba N, Suzuki T, Tobe T. [The influence of obstructive jaundice on the pancreatic trophic effect of trypsin inhibitor in rats]. NIHON SHOKAKIBYO GAKKAI ZASSHI = THE JAPANESE JOURNAL OF GASTRO-ENTEROLOGY 1982; 79:1612-8. [PMID: 6184507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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209
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Abstract
The histopathologic features of nonischemic congestive cardiomyopathy (CCM) include diffuse and focal fibrosis, vacuolar degeneration, and myofiber hypertrophy. Eleven patients with CCM and five controls were studied. Fibrosis and degree of vacuolization were quantified by means of stereologic techniques; myocardial cell diameter was measured with an ocular micrometer. Five levels of the left ventricular free wall were examined. Area I was immediately subepicardial, and area 5 was immediately subendocardial. In all areas, fibrosis, vacuolization, and fiber diameter were significantly greater in the experimental group than in the control group (P less than 0.05). In addition, fibrosis and vacuolization had an umbrella distribution, which peaked in area 4, the area adjacent to the subendocardium (P less than 0.01). The distributions of fibrosis and vacuolar degeneration suggest compromised blood flow to the inner myocardial layers, with relative sparing of the immediate subendocardial region owing to its proximity to the left ventricular cavity.
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210
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King BD, Clark MA, Baba N, Kilman JW, Wooley CF. "Myxomatous" mitral valves: collagen dissolution as the primary defect. Circulation 1982; 66:288-96. [PMID: 6212160 DOI: 10.1161/01.cir.66.2.288] [Citation(s) in RCA: 79] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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211
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Okada K, Fujimoto Y, Baba N, Murata K. Morphogenesis of the core of herpes virus of turkeys studied by computerized reconstruction technique. MICROSCOPICA ACTA 1982; 86:172-3. [PMID: 7121306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Three-dimensional structures of the core of herpes virus of turkeys were examined by computerized reconstruction from electron micrographs. There was a core consisting of six small particles, and a core consisting of a toroid surrounding a cylindrical mass. It is suggested that the cylindrical mass developed from six small nuclear particles.
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212
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Baba N, Bracco EF, Hashim SA. Enhanced thermogenesis and diminished deposition of fat in response to overfeeding with diet containing medium chain triglyceride. Am J Clin Nutr 1982; 35:678-82. [PMID: 7072620 DOI: 10.1093/ajcn/35.4.678] [Citation(s) in RCA: 103] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
The mechanism whereby overfeeding with diet containing medium chain triglyceride (MCT) results in diminished body weight and fat was studied. Fifteen male Sprague-Dawley rats were fitted under anesthesia with gastrostomy tubes and divided into two groups. One group was fed MCT diet, the other an isocaloric diet containing long chain triglyceride (LCT) in excess (150%) of spontaneous calorie intake. Both diets, fed for 6 wk, derived 50% of calories from fat. Basal and norepinephrine (25 micrograms/100 g) stimulated 02 consumption and CO2 production, as well as metabolic rate were measured. After the rats were killed, total dissectible fat and fat cell size and number were determined. MCT rats gained 15% less weight than LCT controls (p less than 0.001). Total dissectible fat was significantly lower (p less than 0.001) in MCT group, as was mean adipocyte size (p less than 0.001). Resting and maximal norepinephrine-stimulated 02 consumptions were 39.7 and 22.1% higher in MCT than in LCT group, respectively. Resting and norepinephrine-stimulated metabolic rates were 38.8 and 22.2% higher in MCT than LCT fed rats, respectively. Overfeeding MCT diet results in decreased body fat related to increased metabolic rate and thermogenesis.
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213
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Kanaya K, Baba N, Kai M, Oho E, Muranaka Y. Digital processing methods using scanning densitometer and microcomputer for the structural analysis of a scanning electron micrograph. SCANNING ELECTRON MICROSCOPY 1982:61-72. [PMID: 7167762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The fundamental equation of image contrast with practical resolving power is shown taking account of the optical and specimen characteristics. Then, the structural factor which is used to indicate the scattering from the unit of structure to form the periodic object in a scanning electron microscopy can be derived straight-forwardly by digital processing. Based on the Fourier analysis, the reconstruction and subsequent interpretation of structural images such as biological specimens of rat microvilli have been successful. These microvilli must exhibit regularity of a hexagonal lattice consisting of rod-like crystalline arrays. Lattice defects are analysed by means of contrast enhancement, level slicing and histogram plotting techniques. The resolution of SEM can be tested from the granularity distance of coated films by the image sharpening by differentiation and subsequent superimposition of reconstructed images. Furthermore, the structural details in high brightness owing to reducing of the brightness level and filtering the high frequency component have been analysed.
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214
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Unverferth DV, Magorien RD, Unverferth BP, Talley RL, Balcerzak SP, Baba N. Human myocardial morphologic and functional changes in the first 24 hours after doxorubicin administration. CANCER TREATMENT REPORTS 1981; 65:1093-7. [PMID: 7296554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The purpose of this study was to document early structural changes in the human heart after the initial administration of doxorubicin. Endomyocardial biopsies were performed at baseline and at 4 and 24 hours after doxorubicin administration to 13 patients. Morphometric analysis of electron micrographs (x 31,200) quantitated mitochondrial and tubular sizes (sarcoplasmic reticulum and T tubules). The mitochondrial size increased from 0.25 +/- 0.01 mu 2 (mean +/- SE) at baseline to 0.27 +/- 0.03 mu 2 (not significant [NS]) at 4 hours and 0.30 +/- 0.03 mu 2 (NS) at 24 hours. The tubular size increased from 2.24 +/- 0.13 x 10(4) nm2 at baseline to 2.60 +/- 0.26 x 10(4) nm2 (P less than 0.05) at 4 hours and 2.46 +/- 0.29 x 10(4) nm2 (NS) at 24 hours. Micrographs analyzed for nuclear changes showed nucleolar contraction and segregation of granular and fibrillar components. These changes were noted in five of ten patients at 4 hours and in eight of 13 patients at 24 hours. Serial echocardiographic and systolic time interval determinations of left ventricular function demonstrated a significant improvement at both 4 and 24 hours. In conclusion, doxorubicin has its most significant effect on tubular structures. Left ventricular function improved during this time despite these findings.
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215
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Unverferth DV, Leier CV, Brierley GP, Magorien RD, Baba N. Human myocardial mitochondria: size differences in parts of the cell. Exp Mol Pathol 1981; 35:184-8. [PMID: 7286159 DOI: 10.1016/0014-4800(81)90058-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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216
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Baker PB, Baba N, Boesel CP. Cardiovascular abnormalities in progeria. Case report and review of the literature. Arch Pathol Lab Med 1981; 105:384-6. [PMID: 6894691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The cardiovascular findings in cases of progeria are similar in many respects to the changes associated with aging. These changes include prominent atherosclerosis and calcification of the aortic and mitral valves, coronary arteries, and aorta. The coronary artery disease leads to ischemic changes in the myocardium, including well-defined infarcts. In addition, the present case demonstrates narrowing of the small intramural arteries, which may have contributed to myocardial fibrosis.
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217
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Murata K, Yamane O, Suga H, Yamamoto S, Kogure S, Hojo Y, Baba N. Alterations of circulatory responses to upright tilt in cardiac patients. JAPANESE HEART JOURNAL 1981; 22:551-60. [PMID: 7300026 DOI: 10.1536/ihj.22.551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Circulatory responses to the upright tilt were studied in 20 normal subjects and 27 cardiac patients with ischemic heart disease or idiopathic cardiomyopathy. In normal subjects, the upright tilt caused obvious increases in heart rate and diastolic pressure, a slight decrease in systolic pressure and marked decreases in cardiac output and stroke volume. The circulatory changes during the tilt were less pronounced in the cardiac patients as compared with the normal subjects. The reductions of cardiac output and stroke volume and the increase in total peripheral resistance were all significantly diminished. A paradoxical increase in cardiac output during the tilt, an observation hitherto not well recognized, was observed in 5 cases with low cardiac index during the control period. Although several possibilities can be considered for the explanation of the diminished, sometimes paradoxical, circulatory responses to the tilt in cardiac patients, the improvement of the function of the diseased heart by preload reduction was proposed as an important factor. There was a significant negative correlation between the per cent changes of cardiac output and the per cent changes of PEP/LVET. It was suggested that the measurements of systolic time intervals during the tilt might be useful for evaluating the severity of the hemodynamic derangement in cardiac patients.
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218
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219
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Yamamoto Y, Baba N, Tajima S. Coloured materials and photoluminescence centres in anodic film on aluminium. Nature 1981. [DOI: 10.1038/289572a0] [Citation(s) in RCA: 126] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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220
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Unverferth DV, Magorien RD, Kolibash AJ, Lewis RP, Lykens M, Altschuld R, Baba N, Leier CV. Biochemical and histologic correlates of ventricular end-diastolic pressure. Int J Cardiol 1981; 1:133-42. [PMID: 7338417 DOI: 10.1016/0167-5273(81)90025-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The associations of elevated left ventricular (LV) and right ventricular (RV) end-diastolic pressure (EDP) were evaluated in 28 patients with non-ischemic congestive cardiomyopathy. Right-sided endomyocardial biopsies from each patient were evaluated for ATP content, percent fibrosis and myocardial fiber diameter. The resting RVEDP and LVEDP and the post-angiographic LVEDP were correlated with the results from the biopsies. There was a correlation of the LVEDP with the RVEDP (r = 0.67, P less than 0.001) by a linear plot. There was no correlation of any EDP measurement with the percent fibrosis. There was, however, a rough correlation of the myocardial fiber diameter with RVEDP (r = 0.40, P less than 0.05). Myocardial ATP content correlated with the RVEDP (r = -0.53, P less than 0.005), the LVEDP (r = -0.65, P less than 0.001) and the post-angiographic LVEDP (r = -0.72, P less than 0.001). These data demonstrate that an elevated ventricular EDP correlates most closely with depressed levels of myocardial ATP. The myocardial cell diameter correlated less well and there was no correlation of EDP with fibrosis. Metabolic factors may be more important than histologic parameters in the elevated ventricular EDP of non-ischemic congestive cardiomyopathy.
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221
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Matsuzawa S, Baba N, Tajima S. Effect of crystal orientation on anodic oxide film growth of Al. Electrochim Acta 1981. [DOI: 10.1016/0013-4686(81)80018-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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222
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Unverferth DV, Leier CV, Magorien RD, Croskery R, Svirbely JR, Kolibash AJ, Dick MR, Meacham JA, Baba N. Improvement of human myocardial mitochondria after dobutamine: a quantitative ultrastructural study. J Pharmacol Exp Ther 1980; 215:527-32. [PMID: 7441513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Dobutamine is a new inotropic agent that may induce prolonged clinical improvement in patients with congestive cardiomyopathy. Sixteen patients with severe heart failure but without obstructive coronary disease were studied by serial functional class determinations and by noninvasive measurements of left ventricular function before and after bedrest control period and then after a 3-day infusion of dobutamine. An endomyocardial biopsy procedure was performed on 11 patients before and after the bedrest and on all 16 patients before and after dobutamine. Quantitative ultrastructural analysis of the biopsies was performed on electron micrographs (31,200 X) by a grid technique. The number of electron dense particles per 100 mitochondria did not change after bedrest but there was a significant decrease from 84 +/- 14 to 65 +/- 12 (P < .005) in the pre- to postdobutamine biopsies. The cristae to matrix ratio of the mitochondria did not change with bedrest but improved from 0.37 +/- 0.04 to 0.47 +/- 0.05 (P < .02) after dobutamine. The average mitochondrial size did not change significantly in the bedrest control nor in the dobutamine biopsy samples. However, when the 16 patients were divided into those who had a good clinical response (by functional class and noninvasive measurements of left ventricular function) and those who had no or little response, the 10 responders did decrease their average mitochondria size from 0.26 +/- 0.03 mu 2 to 0.23 +/- 0.02 mu 2 (P < .02). The mechanism by which a 3-day infusion of dobutamine induces a prolonged clinical improvement is not well understood. The use of quantitative ultrastructural technique in this study has demonstrated that there is a morphologic basis to the improvement.
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223
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Ruff ME, Karayannacos PE, Baba N, Kakos GS, Vasko JS, Williams TE, Kilman JW. Protective effect of beta-adrenergic blockade and hypothermia on myocardial ultrastructure. J Surg Res 1980; 29:430-40. [PMID: 6106732 DOI: 10.1016/0022-4804(80)90056-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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224
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Quattrochi JJ, Baba N, Liss L, McBride PT. Sudden infant death syndrome. Clin Pediatr (Phila) 1980; 19:217. [PMID: 7357775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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225
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Quattrochi JJ, Baba N, Liss L, Adrion W. Sudden infant death syndrome (SIDS): a preliminary study of reticular dendritic spines in infants with SIDS. Brain Res 1980; 181:245-9. [PMID: 7350962 DOI: 10.1016/0006-8993(80)91280-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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