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Mizumachi H, Sakuma M, Ikezumi M, Saito K, Takeyoshi M, Imai N, Okutomi H, Umetsu A, Motohashi H, Watanabe M, Miyazawa M. Transferability and within- and between-laboratory reproducibilities of EpiSensA for predicting skin sensitization potential in vitro: A ring study in three laboratories. J Appl Toxicol 2018; 38:1233-1243. [DOI: 10.1002/jat.3634] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/23/2018] [Accepted: 03/26/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Hideyuki Mizumachi
- Kao Corporation, R&D, Safety Science Research; 2606 Akabane, Ichikai-Machi, Haga-Gun Tochigi 321-3497 Japan
| | - Megumi Sakuma
- KOSÉ Corporation, Research Laboratories; 1-18-4 Azusawa, Itabashi-ku Tokyo 174-0051 Japan
| | - Mayu Ikezumi
- Food and Drug Safety Center; Hatano Research Institute; 729-5 Ochiai Hadano-shi Kanagawa 257-8523 Japan
| | - Kazutoshi Saito
- Kao Corporation, R&D, Safety Science Research; 2606 Akabane, Ichikai-Machi, Haga-Gun Tochigi 321-3497 Japan
| | - Midori Takeyoshi
- KOSÉ Corporation, Research Laboratories; 1-18-4 Azusawa, Itabashi-ku Tokyo 174-0051 Japan
| | - Noriyasu Imai
- KOSÉ Corporation, Research Laboratories; 1-18-4 Azusawa, Itabashi-ku Tokyo 174-0051 Japan
| | - Hiroko Okutomi
- Food and Drug Safety Center; Hatano Research Institute; 729-5 Ochiai Hadano-shi Kanagawa 257-8523 Japan
| | - Asami Umetsu
- Food and Drug Safety Center; Hatano Research Institute; 729-5 Ochiai Hadano-shi Kanagawa 257-8523 Japan
| | - Hiroko Motohashi
- Food and Drug Safety Center; Hatano Research Institute; 729-5 Ochiai Hadano-shi Kanagawa 257-8523 Japan
| | - Mika Watanabe
- Food and Drug Safety Center; Hatano Research Institute; 729-5 Ochiai Hadano-shi Kanagawa 257-8523 Japan
| | - Masaaki Miyazawa
- Kao Corporation, R&D, Safety Science Research; 2606 Akabane, Ichikai-Machi, Haga-Gun Tochigi 321-3497 Japan
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Wagatsuma T, Khan MSH, Watanabe T, Maejima E, Sekimoto H, Yokota T, Nakano T, Toyomasu T, Tawaraya K, Koyama H, Uemura M, Ishikawa S, Ikka T, Ishikawa A, Kawamura T, Murakami S, Ueki N, Umetsu A, Kannari T. Higher sterol content regulated by CYP51 with concomitant lower phospholipid content in membranes is a common strategy for aluminium tolerance in several plant species. J Exp Bot 2015; 66:907-18. [PMID: 25416794 PMCID: PMC4321553 DOI: 10.1093/jxb/eru455] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Several studies have shown that differences in lipid composition and in the lipid biosynthetic pathway affect the aluminium (Al) tolerance of plants, but little is known about the molecular mechanisms underlying these differences. Phospholipids create a negative charge at the surface of the plasma membrane and enhance Al sensitivity as a result of the accumulation of positively charged Al(3+) ions. The phospholipids will be balanced by other electrically neutral lipids, such as sterols. In the present research, Al tolerance was compared among pea (Pisum sativum) genotypes. Compared with Al-tolerant genotypes, the Al-sensitive genotype accumulated more Al in the root tip, had a less intact plasma membrane, and showed a lower expression level of PsCYP51, which encodes obtusifoliol-14α-demethylase (OBT 14DM), a key sterol biosynthetic enzyme. The ratio of phospholipids to sterols was higher in the sensitive genotype than in the tolerant genotypes, suggesting that the sterol biosynthetic pathway plays an important role in Al tolerance. Consistent with this idea, a transgenic Arabidopsis thaliana line with knocked-down AtCYP51 expression showed an Al-sensitive phenotype. Uniconazole-P, an inhibitor of OBT 14DM, suppressed the Al tolerance of Al-tolerant genotypes of maize (Zea mays), sorghum (Sorghum bicolor), rice (Oryza sativa), wheat (Triticum aestivum), and triticale (×Triticosecale Wittmark cv. Currency). These results suggest that increased sterol content, regulated by CYP51, with concomitant lower phospholipid content in the root tip, results in lower negativity of the plasma membrane. This appears to be a common strategy for Al tolerance among several plant species.
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Affiliation(s)
- Tadao Wagatsuma
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | | | - Toshihiro Watanabe
- Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan
| | - Eriko Maejima
- Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan
| | - Hitoshi Sekimoto
- Faculty of Agriculture, Utsunomiya University, Utsunomiya 321-8505, Japan
| | - Takao Yokota
- Department of Bioscience, Teikyo University, Utsunomiya 320-8551, Japan
| | - Takeshi Nakano
- Antibiotics Laboratory RIKEN, Wako, Saitama 351-0198, Japan; RIKEN Centre for Sustainable Resource Science, Wako, Saitama 351-0198, Japan; CREST, Japan Science and Technology Agency (JST), Japan
| | - Tomonobu Toyomasu
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | - Keitaro Tawaraya
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | - Hiroyuki Koyama
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Matsuo Uemura
- Cryobiosystem Research Centre, Faculty of Agriculture, Iwate University, Morioka 020-8550, Japan
| | - Satoru Ishikawa
- National Institute for Agro-Environmental Science, Tsukuba 305-8604, Japan
| | - Takashi Ikka
- Faculty of Agriculture, Shizuoka University, Shizuoka 422-8529, Japan
| | - Akifumi Ishikawa
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | - Takeshi Kawamura
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | - Satoshi Murakami
- Faculty of Applied Biological Sciences, Gifu University, Gifu 501-1193, Japan
| | - Nozomi Ueki
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | - Asami Umetsu
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
| | - Takayuki Kannari
- Faculty of Agriculture, Yamagata University, Tsuruoka 997-8555, Japan
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Sawada Y, Umetsu A, Komatsu Y, Kitamura J, Suzuki H, Asami T, Fukuda M, Honda I, Mitsuhashi W, Nakajima M, Toyomasu T. An unusual spliced variant of DELLA protein, a negative regulator of gibberellin signaling, in lettuce. Biosci Biotechnol Biochem 2012; 76:544-50. [PMID: 22451398 DOI: 10.1271/bbb.110847] [Citation(s) in RCA: 2] [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: 11/08/2022]
Abstract
DELLA proteins are negative regulators of the signaling of gibberellin (GA), a phytohormone regulating plant growth. DELLA degradation is triggered by its interaction with GID1, a soluble GA receptor, in the presence of bioactive GA. We isolated cDNA from a spliced variant of LsDELLA1 mRNA in lettuce, and named it LsDELLA1sv. It was deduced that LsDELLA1sv encodes truncated LsDELLA1, which has DELLA and VHYNP motifs at the N terminus but lacks part of the C-terminal GRAS domain. The recombinant LsDELLA1sv protein interacted with both Arabidopsis GID1 and lettuce GID1s in the presence of GA. A yeast two-hybrid assay suggested that LsDELLA1sv interacted with LsDELLA1. The ratio of LsDELLA1sv to LsDELLA1 transcripts was higher in flower samples at the late reproductive stage and seed samples (dry seeds and imbibed seeds) than in the other organ samples examined. This study suggests that LsDELLA1sv is a possible modulator of GA signaling in lettuce.
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Affiliation(s)
- Yoshiaki Sawada
- Department of Bioresource Engineering, Yamagata University, Tsutuoka, Yamagata, Japan
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Umetsu A, Sawada Y, Mitsuhashi W, Mazier M, Toyomasu T. Characterization of a loss-of-function mutant of gibberellin biosynthetic gene LsGA3ox1 in lettuce. Biosci Biotechnol Biochem 2011; 75:2398-400. [PMID: 22146725 DOI: 10.1271/bbb.110475] [Citation(s) in RCA: 2] [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: 11/08/2022]
Abstract
A previous study generated lettuce (Lactuca sativa) mutant lines tagged by retrotransposon Tnt1 from tobacco (Nicotiana tabacum) and identified a homozygous mutant, Tnt6a, that exhibited severe dwarf phenotype. Here we show that Tnt1 is inserted into the intron of gibberellin biosynthetic gene LsGA3ox1 in Tnt6a mutants. Expression analysis suggests that LsGA3ox1 is nearly knocked out in the Tnt6a mutants.
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Affiliation(s)
- Asami Umetsu
- Department of Bioresource Engineering, Yamagata University, Tsuruoka, Japan
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Mori N, Mugikura S, Higano S, Kaneta T, Fujimura M, Umetsu A, Murata T, Takahashi S. The leptomeningeal "ivy sign" on fluid-attenuated inversion recovery MR imaging in Moyamoya disease: a sign of decreased cerebral vascular reserve? AJNR Am J Neuroradiol 2009; 30:930-5. [PMID: 19246527 DOI: 10.3174/ajnr.a1504] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Moyamoya disease is an idiopathic occlusive cerebrovascular disorder with abnormal microvascular proliferation. We investigated the clinical utility of leptomeningeal high signal intensity (ivy sign) sometimes seen on fluid-attenuated inversion recovery images in Moyamoya disease. MATERIALS AND METHODS We examined the relationship between the degree of the ivy sign and the severity of the ischemic symptoms in 96 hemispheres of 48 patients with Moyamoya disease. We classified each cerebral hemisphere into 4 regions from anterior to posterior. In 192 regions of 24 patients, we examined the relationship between the degree of the ivy sign and findings of single-photon emission CT, including the resting cerebral blood flow (CBF) and cerebral vascular reserve (CVR). RESULTS The degree of the ivy sign showed a significant positive relationship with the severity of the ischemic symptoms (P < .001). Of the 4 regions, the ivy sign was most frequently and prominently seen in the anterior part of the middle cerebral artery region. The degree of the ivy sign showed a negative relationship with the resting CBF (P < .0034) and a more prominent negative relationship with the CVR (P < .001). CONCLUSIONS The leptomeningeal ivy sign indicates decreased CVR in Moyamoya disease.
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Affiliation(s)
- N Mori
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan.
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Kato Y, Higano S, Tamura H, Mugikura S, Umetsu A, Murata T, Takahashi S. Usefulness of contrast-enhanced T1-weighted sampling perfection with application-optimized contrasts by using different flip angle evolutions in detection of small brain metastasis at 3T MR imaging: comparison with magnetization-prepared rapid acquisition of gradient echo imaging. AJNR Am J Neuroradiol 2009; 30:923-9. [PMID: 19213825 DOI: 10.3174/ajnr.a1506] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND PURPOSE Early accurate diagnosis of brain metastases is crucial for a patient's prognosis. This study aimed to compare the conspicuity and detectability of small brain metastases between contrast-enhanced 3D fast spin-echo (sampling perfection with application-optimized contrasts by using different flip angle evolutions [SPACE]) and 3D gradient-echo (GE) T1-weighted (magnetization-prepared rapid acquisition of GE [MPRAGE]) images at 3T. MATERIALS AND METHODS Sixty-nine consecutive patients with suspected brain metastases were evaluated prospectively by using SPACE and MPRAGE on a 3T MR imaging system. After careful evaluation by 2 experienced neuroradiologists, 92 lesions from 16 patients were selected as brain metastases. We compared the shorter diameter, contrast rate (CR), and contrast-to-noise ratio (CNR) of each lesion. Diagnostic ability was compared by using receiver operating characteristic (ROC) analysis. Ten radiologists (5 neuroradiologists and 5 residents) participated in the reading. RESULTS The mean diameter was significantly larger by using SPACE than MPRAGE (mean, 4.5 +/- 3.7 versus 4.3 +/- 3.7 mm, P = .0014). The CR and CNR of SPACE (mean, 57.3 +/- 47.4%, 3.0 +/- 1.9, respectively) were significantly higher than those of MPRAGE (mean, 37.9 +/- 41.2%, 2.6 +/- 2.2; P < .0001, P = .04). The mean area under the ROC curve was significantly larger with SPACE than with MPRAGE (neuroradiologists, 0.99 versus 0.88, P = .013; residents, 0.99 versus 0.78, P = .0001). CONCLUSIONS Lesion detectability was significantly higher on SPACE than on MPRAGE, irrespective of the experience of the reader in neuroradiology. SPACE should be a promising diagnostic technique for assessing brain metastases.
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Affiliation(s)
- Y Kato
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi-ken, Japan.
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Yuzawa H, Higano S, Mugikura S, Umetsu A, Murata T, Nakagawa A, Koyama A, Takahashi S. Pseudo-subarachnoid hemorrhage found in patients with postresuscitation encephalopathy: characteristics of CT findings and clinical importance. AJNR Am J Neuroradiol 2008; 29:1544-9. [PMID: 18556358 DOI: 10.3174/ajnr.a1167] [Citation(s) in RCA: 55] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE High-attenuation areas (HDAs) called pseudo-subarachnoid hemorrhages (SAHs) may develop in some patients resuscitated from cardiopulmonary arrest (CPA), though no hemorrhage has occurred. We investigated the imaging characteristics and clinical significance of this phenomenon. MATERIALS AND METHODS CT images of consecutive patients resuscitated from nontraumatic CPA were reviewed and classified into cases with pseudo-SAH (pseudo-SAH[+] group, n = 9), those without pseudo-SAH (pseudo-SAH[-] group, n = 28), and those with true SAH (SAH-CPA group, n = 8). Typical patients with SAH (SAH group, n = 13) and 20 healthy individuals were also extracted as control groups. The degree of brain edema was scored visually as none, mild, or severe, and the CT values of the HDAs and brain parenchyma were measured. These parameters were compared among the groups. We also compared the prognosis between the pseudo-SAH(+) and pseudo-SAH(-) groups. RESULTS On CT, pseudo-SAH was associated with severe brain edema, whereas there was mild or no edema without pseudo-SAH. The CT values of the HDAs in the pseudo-SAH(+) group were significantly lower than those of the CPA-SAH and SAH groups (P < .0001). The brain parenchyma of the pseudo-SAH(+) group had the lowest CT values among all of the groups (P < .0001). The prognosis of the pseudo-SAH(+) group was significantly poorer than that of the pseudo-SAH(-) group in terms of both clinical outcome (P = .02) and survival (P = .046). CONCLUSION The findings of pseudo-SAH have several imaging characteristics differing from SAH and predict a poor prognosis. This provides important information that can be used for deciding treatment strategies.
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Affiliation(s)
- H Yuzawa
- Department of Radiology, School of Medicine, Tohoku University Hospital, Sendai, Miyagi, Japan.
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Gong X, Higano S, Mugikura S, Umetsu A, Murata T, Kumabe T, Takahashi S. Virtually Peeling Off the Skull and Scalp: A Simple Way of Mapping the Superficial Cerebral Veins on the Brain Surface. Stereotact Funct Neurosurg 2008; 86:345-50. [DOI: 10.1159/000163555] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Saito A, Kumagai T, Kojima H, Terai I, Yamanaka T, Wataya Y, Umetsu M, Umetsu A, Yano S. A sero-epidemiological survey of gelatin sensitization in young Japanese children during the 1979-1996 period. Scand J Immunol 2005; 61:376-9. [PMID: 15853922 DOI: 10.1111/j.1365-3083.2005.01590.x] [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: 11/30/2022]
Abstract
Recently, an increasing number of adverse reactions in children inoculated with live attenuated virus vaccines containing gelatin have been reported. However, the distribution, magnitude and rate of gelatin sensitization in the Japanese population have not been established. Here, the purpose was to investigate the distribution of children with positive gelatin immunoglobulin G (IgG) and/or IgE in Japan and to ascertain whether the incidence of positive antigelatin antibody cases among the general population, as reflected in the sample employed here, has been increasing during the period in question. The presence of IgE and IgG antibodies were measured against gelatin in 1600 panel sera collected from different age groups of Japanese children in Hokkaido/Sapporo from 1979 through 1996. Among the subjects, 39 had gelatin IgG- and/or IgE-positive sera, and these were correlated with the time of obtaining the sera as well as with the age of the subjects. The older the subject and the later the period, the higher the sero-incidence. Japanese children have become increasingly sensitized to gelatin, especially since the mid-1990s.
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Affiliation(s)
- A Saito
- Hokkaido Institute of Public Health, Sapporo, Hokkaido, Japan.
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Umetsu A, Okuda J, Fujii T, Tsukiura T, Nagasaka T, Yanagawa I, Sugiura M, Inoue K, Kawashima R, Suzuki K, Tabuchi M, Murata T, Mugikura S, Higano S, Takahashi S, Fukuda H, Yamadori A. Brain activation during the fist-edge-palm test: a functional MRI study. Neuroimage 2002; 17:385-92. [PMID: 12482091 DOI: 10.1006/nimg.2002.1218] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of our study is to clarify, using functional MRI, brain regions activated during the fist-edge-palm task (FEP) compared to relatively simple hand motor tasks using either the right or the left hand in right-handed normal volunteers. The FEP was introduced to detect a disorder of voluntary movement, and it is believed to be closely related to contralateral frontal lobe damage. However, this assumption still remains controversial. Ten subjects participated in this study. Hand motor tasks were as follows: (1) the FEP, in which the subjects were requested to place their hand in three different positions sequentially: a fist resting horizontally, a palm resting vertically, and a palm resting horizontally; (2) a fist-palm task (FP), in which the subjects were asked to clench and unclench their fist alternately; and (3) a control task requiring the subjects to knock lightly with their clenched fist. The contralateral sensomotor and premotor areas were activated in the FP with the right hand and the contralateral sensorimotor, premotor, and supplementary motor areas (SMA) were activated in the FP with the left hand. In the FEP with either hand, bilateral premotor and left parietal areas and ipsilateral cerebellum were also activated as well as contralateral sensorimotor area and SMA. Our results suggest that successful performance of the FEP requires the participation of more brain areas than FP, which may explain why some patients without frontal lobe damage failed to perform the FEP.
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Affiliation(s)
- A Umetsu
- Department of Diagnostic Radiology, Institute of Development, Aging and Cancer, Tohoku University Hospital, Tohoku University, Sendai, Japan.
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Kurihara N, Takahashi S, Tamura H, Higano S, Furuta S, Jokura H, Umetsu A. Investigation of hydrocephalus with three-dimensional constructive interference in steady state MRI. Neuroradiology 2000; 42:634-8. [PMID: 11071433 DOI: 10.1007/s002340000330] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 11/29/2022]
Abstract
We report four patients with various types of hydrocephalus in whom constructive interference in steady state (CISS) MRI disclosed the cause of the hydrocephalus. The imaging clearly delineated an abnormal contour of the ventricular system and intraventricular septa, essential information for surgical planning, including endoscopic surgery. Postoperative CISS images were useful for showing not only regression of hydrocephalus but also the patency of small fenestrations.
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Affiliation(s)
- N Kurihara
- Department of Radiology, Tohoku University, Miyagi, Japan.
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Kawashima R, Okuda J, Umetsu A, Sugiura M, Inoue K, Suzuki K, Tabuchi M, Tsukiura T, Narayan SL, Nagasaka T, Yanagawa I, Fujii T, Takahashi S, Fukuda H, Yamadori A. Human cerebellum plays an important role in memory-timed finger movement: an fMRI study. J Neurophysiol 2000; 83:1079-87. [PMID: 10669519 DOI: 10.1152/jn.2000.83.2.1079] [Citation(s) in RCA: 99] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The purpose of this study was to determine, by using functional magnetic resonance imaging, the areas of the brain activated during a memory-timed finger movement task and compare these with those activated during a visually cued movement task. Because it is likely that subjects engage in subvocalization associated with chronometric counting to achieve accurate timing during memory-timed movements, the authors sought to determine the areas of the brain activated during a silent articulation task in which the subjects were instructed to reproduce the same timing as for the memory-timed movement task without any lip movements or vocalization. The memory-timed finger movement task induced activation of the anterior lobe of the cerebellum (lobules IV and V) bilaterally, the contralateral primary motor area, the supplementary motor area (SMA), the premotor area (PMA), the prefrontal cortex, and the posterior parietal cortex bilaterally, compared with the resting condition. The same areas in the SMA and left prefrontal cortex were activated during the silent articulation task compared with the resting condition. The anterior lobe of the cerebellum on both sides was also activated during the silent articulation task compared with the resting condition, but these activations did not reach statistical significance (P < 0.05 corrected). In addition, the anterior cerebellum on both sides showed significant activation during the memory-timed movement task when compared with the visually cued finger movement task. The visually cued finger movement task specifically activated the ipsilateral PMA and the intraparietal cortex bilaterally. The results indicate that the anterior lobe of the cerebellum of both sides, the SMA, and the left prefrontal cortex were probably involved in the generation of accurate timing, functioning as a clock within the CNS, and that the dorsal visual pathway may be involved in the generation of visually cued movements.
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Affiliation(s)
- R Kawashima
- Institute of Development, Aging and Cancer, Tohoku University, Sendai 980-8575, Japan
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Kumagai T, Yamanaka T, Wataya Y, Umetsu A, Kawamura N, Ikeda K, Furukawa H, Kimura K, Chiba S, Saito S, Sugawara N, Kurimoto F, Sakaguchi M, Inouye S. Gelatin-specific humoral and cellular immune responses in children with immediate- and nonimmediate-type reactions to live measles, mumps, rubella, and varicella vaccines. J Allergy Clin Immunol 1997; 100:130-4. [PMID: 9257797 DOI: 10.1016/s0091-6749(97)70204-5] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.2] [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: 02/05/2023]
Abstract
BACKGROUND This study was designed to investigate the development of both cellular and humoral immune responses to gelatin in patients with vaccine-related immediate and nonimmediate reactions. Our purpose was to define the nature of the responses in the different clinical states. METHODS Six patients with immediate reactions and 21 patients with nonimmediate reactions after inoculation of various live vaccines were studied. Measurement of gelatin-specific IgE was performed in all subjects. Gelatin-specific T-cell responses detected by an in vitro lymphocyte proliferation assay and by an assay for IL-2 responsiveness were investigated to compare the immune response in patients with the two types of reaction. RESULTS All six patients with immediate reactions had IgE responses to gelatin, whereas none of the 21 patients with nonimmediate reactions had any anti-gelatin IgE. All of the six patients with immediate reactions and 17 of the 21 patients with nonimmediate reactions exhibited positive T-lymphocyte responses specific to gelatin. CONCLUSIONS Immediate and nonimmediate reactions are caused by different types of allergy to gelatin, and cell-mediated immunity to gelatin may play an important role in the pathogenesis of nonimmediate reactions.
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Affiliation(s)
- T Kumagai
- Pediatric Allergy and Infectious Diseases Society of Sapporo, Japan
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Dobashi M, Yuda F, Narabayashi M, Imai Y, Isoda N, Obata K, Umetsu A, Ohgushi M. Histopathological study of corpora amylacea pulmonum. Histol Histopathol 1989; 4:153-65. [PMID: 2485191] [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: 01/01/2023]
Abstract
In this paper, we present a rare disorder which is known as corpora amylacea pulmonum. X-ray CT scanning showed an abnormal focus of the lung as a solitary mass with high density and spicular features around the surface. The resected lung tissue was characterized by the appearance of round, concentrically laminated acellular bodies about 40-80 microns in diameter. The bodies were usually found lying free in the alveolar space and surrounded by the exudate alveolar macrophages or multinuclear giant cells. Some of these macrophages were in a state of progressive degeneration. The bodies showed an affinity for Congo red and exhibited partial birefringence. Moreover, all the bodies had a strong positivity for the PAS reaction and anti lysozyme antibodies. The exudate alveolar macrophages and multinuclear giant cells also displayed reactivity for PAS and lysozyme in a similar manner to that of the bodies. Electron microscopically the bodies were fundamentally composed of fibrillar elements, which bore some resemblance to amyloid fibrils and probably accounted for the partial affinity of the bodies for Congo red. These amyloid-like fibrils were also found in the cytoplasm of the macrophages. This suggested that the concentrically laminated bodies in corpora amylacea pulmonum might be formed by sequential aggregation, fusion, coalescence and compaction of degenerated alveolar macrophages.
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Affiliation(s)
- M Dobashi
- Second Department of Pathology, Yamagata University School of Medicine, Japan
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15
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Hosoya T, Takeda Y, Sugai Y, Umetsu A, Yamaguchi K. [A case of thalamic hemorrhage presenting long-term high density on CT]. Rinsho Hoshasen 1988; 33:609-12. [PMID: 3418927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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16
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Shiono H, Oonishi M, Yamaguchi M, Sakamoto F, Umetsu A. Posterior subcapsular cataracts associated with long-term oral corticosteroid therapy. Ophthalmologic observations indicate these are frequent though clinically unsuspected. Clin Pediatr (Phila) 1977; 16:726-8. [PMID: 872483 DOI: 10.1177/000992287701600810] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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