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Heyn PC, Tagawa A, Pan Z, Carollo J. A SELF-HEALTH EMPOWERMENT AND WELLNESS MANAGEMENT APPROACH FOR INDIVIDUALS AGING WITH COMPLEX HEALTH CONDITIONS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.1373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- P C Heyn
- University of Colorado Anschutz Medical Campus, Arvada, Colorado,United States
| | - A Tagawa
- BS Center for Gait and Movement Analysis, Children’s Hospital Colorado, University of Colorado Anschutz Medical Campus
| | - Z Pan
- MD, PhD, The Colorado Research Institute Biostatistics Core, University of Colorado Anschutz Medical Campus
| | - J Carollo
- Center for Gait and Movement Analysis, Children’s Hospitals Colorado, University of Colorado Anschutz Medical Campus
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Heyn P, Kellerson J, Tagawa A, Hoffecker L, Krishnan S, Negm A, Ottenbacher K. EFFECTS OF RANDOMIZED EXERCISE TRAINING ON COGNITION OF OLDER ADULTS WITH COGNITIVE IMPAIRMENTS: AN UMBRELLA REVIEW. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- P Heyn
- University of Colorado Anschutz Medical Campus
| | - J Kellerson
- University of Colorado Anschutz Medical Campus
| | - A Tagawa
- Children’s Hospital Colorado, Anschutz Medical Campus
| | - L Hoffecker
- University of Colorado Anschutz Medical Campus
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Otsuka M, Suzuki T, Tagawa A, Ogawa T, Hashimoto R, Katoh H. Alzheimer's desease and insulin resistance. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Heyn P, Pan Z, Tagawa A, Carollo J. DIAGNOSING METABOLIC SYNDROME IN INDIVIDUALS WITH MOTOR DISABILITIES. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.4451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- P.C. Heyn
- Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Arvada, Colorado,
- Children’s Hospital Colorado, Aurora, Colorado
| | - Z. Pan
- Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Arvada, Colorado,
- Children’s Hospital Colorado, Aurora, Colorado
| | - A. Tagawa
- Children’s Hospital Colorado, Aurora, Colorado
| | - J. Carollo
- Children’s Hospital Colorado, Aurora, Colorado
- Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Arvada, Colorado,
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Abstract
Glomerular podocytes are pivotal in maintaining glomerular filtration barrier function. As severe podocyte injury results in proteinuria in patients with diabetic nephropathy, determining the pathogenesis of podocyte injury may contribute to the development of new treatments. We recently showed that autophagy is involved in the pathogenesis of diabetes-related podocyte injury. Insufficient podocyte autophagy and podocyte loss are observed in diabetic patients with massive proteinuria. Podocyte loss and massive proteinuria occur in high-fat diet-induced diabetic mice with podocyte-specific autophagy deficiency, with podocytes of these mice and of diabetic rats having huge damaged lysosomes. Sera from diabetic patients and from rodents with massive proteinuria cause autophagy insufficiency, resulting in lysosome dysfunction and apoptosis of cultured podocytes. These findings suggest the importance of autophagy in maintaining lysosome homeostasis in podocytes under diabetic conditions. Impaired autophagy may be involved in the pathogenesis of podocyte loss, leading to massive proteinuria in diabetic nephropathy.
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Affiliation(s)
- Mako Yasuda-Yamahara
- a Department of Medicine ; Shiga University of Medical Science ; Otsu; Shiga , Japan
| | - Shinji Kume
- a Department of Medicine ; Shiga University of Medical Science ; Otsu; Shiga , Japan
| | - Atsuko Tagawa
- a Department of Medicine ; Shiga University of Medical Science ; Otsu; Shiga , Japan
| | - Hiroshi Maegawa
- a Department of Medicine ; Shiga University of Medical Science ; Otsu; Shiga , Japan
| | - Takashi Uzu
- a Department of Medicine ; Shiga University of Medical Science ; Otsu; Shiga , Japan
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6
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Tagawa A, Yasuda M, Kume S, Yamahara K, Nakazawa J, Chin-Kanasaki M, Araki H, Araki SI, Koya D, Asanuma K, Kim EH, Haneda M, Kajiwara N, Hayashi K, Ohashi H, Ugi S, Maegawa H, Uzu T. Impaired Podocyte Autophagy Exacerbates Proteinuria in Diabetic Nephropathy. Diabetes 2016; 65:755-67. [PMID: 26384385 DOI: 10.2337/db15-0473] [Citation(s) in RCA: 221] [Impact Index Per Article: 27.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/14/2015] [Indexed: 11/13/2022]
Abstract
Overcoming refractory massive proteinuria remains a clinical and research issue in diabetic nephropathy. This study was designed to investigate the pathogenesis of massive proteinuria in diabetic nephropathy, with a special focus on podocyte autophagy, a system of intracellular degradation that maintains cell and organelle homeostasis, using human tissue samples and animal models. Insufficient podocyte autophagy was observed histologically in patients and rats with diabetes and massive proteinuria accompanied by podocyte loss, but not in those with no or minimal proteinuria. Podocyte-specific autophagy-deficient mice developed podocyte loss and massive proteinuria in a high-fat diet (HFD)-induced diabetic model for inducing minimal proteinuria. Interestingly, huge damaged lysosomes were found in the podocytes of diabetic rats with massive proteinuria and HFD-fed, podocyte-specific autophagy-deficient mice. Furthermore, stimulation of cultured podocytes with sera from patients and rats with diabetes and massive proteinuria impaired autophagy, resulting in lysosome dysfunction and apoptosis. These results suggest that autophagy plays a pivotal role in maintaining lysosome homeostasis in podocytes under diabetic conditions, and that its impairment is involved in the pathogenesis of podocyte loss, leading to massive proteinuria in diabetic nephropathy. These results may contribute to the development of a new therapeutic strategy for advanced diabetic nephropathy.
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MESH Headings
- Adult
- Aged
- Animals
- Apoptosis
- Autophagy
- Autophagy-Related Protein 5
- Autophagy-Related Protein 7
- Blotting, Western
- Cell Line
- Diabetes Mellitus, Experimental/complications
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 2/complications
- Diabetes Mellitus, Type 2/metabolism
- Diabetes Mellitus, Type 2/pathology
- Diabetic Nephropathies/etiology
- Diabetic Nephropathies/metabolism
- Diabetic Nephropathies/pathology
- Diet, High-Fat
- Female
- Humans
- Intracellular Signaling Peptides and Proteins/metabolism
- Intravital Microscopy
- Kidney/metabolism
- Kidney/pathology
- Lysosomes/metabolism
- Lysosomes/pathology
- Male
- Membrane Proteins/metabolism
- Mice
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Microfilament Proteins/metabolism
- Microscopy, Electron, Scanning
- Microscopy, Electron, Transmission
- Microtubule-Associated Proteins/genetics
- Middle Aged
- Podocytes/metabolism
- Proteinuria/etiology
- Proteinuria/metabolism
- Proteinuria/pathology
- RNA-Binding Proteins/blood
- Rats
- Rats, Long-Evans
- Severity of Illness Index
- Young Adult
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Affiliation(s)
- Atsuko Tagawa
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Mako Yasuda
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Shinji Kume
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Kosuke Yamahara
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Jun Nakazawa
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | | | - Hisazumi Araki
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Shin-Ichi Araki
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Daisuke Koya
- Division of Diabetology and Endocrinology, Kanazawa Medical University, Kahoku-gun, Ishikawa, Japan
| | - Katsuhiko Asanuma
- Laboratory for Kidney Research (TMK Project), Medical Innovation Center, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan Division of Nephrology, Juntendo University Faculty of Medicine, Bunkyo-ku, Tokyo, Japan
| | - Eun-Hee Kim
- Division of Nephrology, Juntendo University Faculty of Medicine, Bunkyo-ku, Tokyo, Japan Osong Medical Innovation Foundation, Laboratory Animal Center, Cheongwon-gun, Chungbuk, Republic of Korea
| | - Masakazu Haneda
- Division of Metabolism and Biosystemic Science, Department of Internal Medicine, Asahikawa Medical University, Hokkaido, Japan
| | | | - Kazuyuki Hayashi
- Department of Nephrology, Ikeda City Hospital, Ikeda, Osaka, Japan
| | - Hiroshi Ohashi
- Department of Pathology, Ikeda City Hospital, Ikeda, Osaka, Japan
| | - Satoshi Ugi
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Hiroshi Maegawa
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
| | - Takashi Uzu
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga, Japan
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Muramatsu Y, Tagawa A, Sakaguchi E, Kasai T. Water Absorption Characteristics and Volume Changes of Milled and Brown Rice During Soaking. Cereal Chem 2006. [DOI: 10.1094/cc-83-0624] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Y. Muramatsu
- Department of Food Science and Technology, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri-shi, Hokkaido, 099-2493, Japan
- Corresponding author. Phone: +81-152-48-3852. Fax: +81-152-48-2940. E-mail:
| | - A. Tagawa
- Graduate School of Science and Technology, Chiba University, 648 Matsudo, Matsudo-shi, Chiba-ken, 271-8510 Japan
| | - E. Sakaguchi
- Department of Bioproduction and Environment Engineering, Faculty of Regional Environment Science, Tokyo University of Agriculture, 1-1-1 Sakuraoka, Setagaya-ku, Tokyo, 156-8502 Japan
| | - T. Kasai
- Department of Food Science and Technology, Faculty of Bioindustry, Tokyo University of Agriculture, 196 Yasaka, Abashiri-shi, Hokkaido, 099-2493, Japan
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Tagawa A, Kaneko T, Shinohara T, Ueda A, Sato T, Ishigatsubo Y. Heme oxygenase-1 inhibits cigarette smoke-induced increase in the tracheal mucosal permeability in guinea pigs in vivo. Inflamm Res 2005; 54:229-34. [PMID: 15953995 DOI: 10.1007/s00011-005-1348-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [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: 11/27/2022] Open
Abstract
OBJECTIVE To examine whether heme oxygenase (HO)-1 inhibits cigarette smoke (CS)-induced increase in the airway mucosal permeability. METHODS Mucosal permeability was quantified by monitoring the rate of appearance in the circulation of horseradish peroxidase that had been instilled into the isolated tracheal segment in guinea pigs in vivo, after exposure to CS or room air. RESULTS Exposure to 10 puffs of CS did not increase the tracheal mucosal permeability but did increase the permeability after pretreatment with zinc protoporphyrin, a competitive inhibitor of HO-1. Moreover, pretreatment with hemin, a potent inducer of HO-1, inhibited the increase in the permeability of the tracheal mucosa induced by 20 puffs of CS exposure. CONCLUSION It is concluded that HO-1 has an important role in suppressing the increase in the mucosal permeability induced by CS in guinea pig trachea.
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Affiliation(s)
- A Tagawa
- Department of Internal Medicine and Clinical Immunology, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama-City 236-0004, Japan
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10
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Tagawa A, Mokuda O, Sakamoto Y, Shimizu N. Electroencephalogram is activated by addition of pentobarbital in the isolated perfused head of the rat. Physiol Res 2004; 52:497-502. [PMID: 12899663] [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: 03/04/2023] Open
Abstract
To evaluate the direct effects of a barbiturate on cerebral functions without its influence on brain perfusion pressure, circulatory hormones and metabolites, the electroencephalogram (EEG) was studied in the isolated rat head. Male Wistar rats were anesthetized, and EEG electrodes were inserted into the cranium. A Krebs-Ringer bicarbonate buffer solution containing heparinized rat whole blood, 20 mmol/l glucose, 200 mmol/l mannitol and 0.1 mg/ml dexamethasone was used for the perfusate. The bilateral common carotid arteries were cannulated, pumped at a rate of 6 ml/min and the head was isolated. The venous effluent was reoxygenated and recirculated into the brain. Twenty-five min after isolation of the heads pentobarbital was added to the perfusate at concentrations of 0.1, 0.5 and 2.5 mg/ml. EEG was recorded before and during perfusion. EEG activity could be recorded for more than 25 min after the beginning of perfusion. EEG activity gradually declined from 42+/-5 microV before perfusion (in vivo) to 4+/-1 microV at 25 min after the beginning of perfusion. Then, 3 min after the addition of pentobarbital, the EEG activity became significantly higher in the high dose groups; 12+/-3 microV in the 0.5 mg/ml group (p<0.05) and 12+/-1 microV in 2.5 mg/ml group (p<0.05) compared with the group without pentobarbital (2+/-2 microV). The present study suggests that a barbiturate has mitigating effects on the brain damage induced by the in vitro brain perfusion.
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Affiliation(s)
- A Tagawa
- Department of Neurology, Brain Research Institute, 1-757 Asahimachi, Niigata City, Niigata 951-8585, Japan. asako54@ bri.niigata-u.ac.jp
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11
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Tagawa A, Ono S, Shibata M, Imai T, Suzuki M, Shimizu N. A new neurological entity manifesting as involuntary movements and dysarthria with possible abnormal copper metabolism. J Neurol Neurosurg Psychiatry 2001; 71:780-3. [PMID: 11723201 PMCID: PMC1737628 DOI: 10.1136/jnnp.71.6.780] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A few patients with an affected CNS involving abnormalities in copper metabolism have been described that do not fit any known nosological entities such as Wilson's disease or Menkes' disease. Three sporadic patients (two men and one woman) were examined with involuntary movements and dysarthria associated with abnormal concentrations of serum copper, serum ceruloplasmin, and urinary copper excretion. The onset of neurological symptoms occurred at the age of 15 to 17 years. The common clinical symptoms were involuntary movements and dysarthria. The involuntary movements included dystonia in the neck, myoclonus in the shoulder, athetosis in the neck, and rapid orobuccal movements. The dysarthria consisted of unclear, slow, and stuttering speech. Two of the three patients did not have dementia. A cousin of the female patient had been diagnosed as having Wilson's disease and had died of liver cirrhosis. Laboratory findings showed a mild reduction in serum copper and ceruloplasmin concentrations, whereas urinary copper excretion was significantly reduced in all three patients. Two of the three patients showed a high signal intensity in the basal ganglia on T2 weighted brain MRI. In conclusion, the unique findings of involuntary movements, dysarthria, and abnormal serum copper and urinary copper concentrations suggest that the three patients may constitute a new clinical entity that is distinct from either Wilson's or Menkes disease.
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MESH Headings
- Adult
- Age of Onset
- Brain Diseases, Metabolic, Inborn/complications
- Brain Diseases, Metabolic, Inborn/diagnosis
- Brain Diseases, Metabolic, Inborn/genetics
- Brain Diseases, Metabolic, Inborn/metabolism
- Ceruloplasmin/metabolism
- Copper/blood
- Copper/metabolism
- Copper/urine
- Dysarthria/genetics
- Dyskinesias/genetics
- Female
- Humans
- Magnetic Resonance Imaging
- Male
- Metal Metabolism, Inborn Errors/complications
- Metal Metabolism, Inborn Errors/diagnosis
- Metal Metabolism, Inborn Errors/genetics
- Metal Metabolism, Inborn Errors/metabolism
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Affiliation(s)
- A Tagawa
- Department of Neurology, Teikyo University School of Medicine, Ichihara Hospital, 3426-3 Anesaki, Ichihara City, Chiba 299-0111, Japan.
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Tagawa A, Rappleye CA, Aroian RV. Pod-2, along with pod-1, defines a new class of genes required for polarity in the early Caenorhabditis elegans embryo. Dev Biol 2001; 233:412-24. [PMID: 11336504 DOI: 10.1006/dbio.2001.0234] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [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: 01/03/2023]
Abstract
The asymmetric division of the one-cell Caenorhabditis elegans zygote gives rise to two cells of different size and fate, thereby establishing the animal's anterior--posterior (a-p) axis. Through genetics, a number of genes required for this polarity have been characterized, but many components remain unidentified. Recently, our laboratory discovered a mutation in the pod-1 gene (for polarity and osmotic defective) that uniquely perturbed polarity and osmotic protection. Here, we describe a new C. elegans polarity gene identified during screens for conditional embryonic lethals. Embryos in which this gene has been mutated show a loss of physical and developmental asymmetries in the one-cell embryo, including the mislocalization of PAR and POD-1 proteins required for early polarity. Furthermore, mutant embryos are osmotically sensitive, allowing us to designate this gene pod-2. Thus, pod-2, along with pod-1, defines a new class of C. elegans polarity genes. Genetic analyses indicate that pod-2 functions in the same pathway as pod-1. Temperature-shift studies indicate that pod-2 is required during oogenesis, indicating that aspects of embryonic polarization may precede fertilization. pod-2 mutant embryos also exhibit a unique germline inheritance defect in which germline identity localizes to the wrong spot in the one-cell embryo and is therefore inherited by the wrong cell at the four-cell stage. Our data suggest that pod-2 may be required to properly position an a-p polarity cue.
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Affiliation(s)
- A Tagawa
- Division of Biology, Section of Cell and Developmental Biology, University of California, San Diego, La Jolla, California 92093, USA
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13
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Affiliation(s)
- A Tagawa
- Department of Neurology, Teikyo University School of Medicine, Ichihara Hospital, Ichihara City, Japan
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14
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Tagawa A, Ono S, Inoue K, Hosoi N, Kaneda K, Suzuki M, Nagao K, Shimizu N. A new familial adult-onset leukodystrophy manifesting as cerebellar ataxia and dementia. J Neurol Sci 2001; 183:47-55. [PMID: 11166794 DOI: 10.1016/s0022-510x(00)00472-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Among hereditary leukodystrophies, a considerable number remain unclassified. PATIENTS AND RESULTS We investigated the clinical course and histopathology of one patient in a family of adult-onset leukodystrophy with possible dominant inheritance. A 44-year-old man presented with cerebellar ataxia as the initial symptom, and later, dementia and hyperreflexia with ankle clonus developed. T2-weighted brain MRI showed brain atrophy and diffuse high signal intensity of the cerebral white matter and the brain stem. The patient's mother and older brother also had cerebellar ataxia and dementia, and his older brother had been diagnosed as having spinocerebellar degeneration. An older sister of our patient possibly had similar neurological symptoms of adult-onset. Our patient died of pneumonia 5 years after the onset of disease. The histopathological findings consisted mainly of patchily observed vacuolar changes in the cerebral and cerebellar white matter and the brain stem. The subcortical regions and the cortex were unaffected. It is suggested that the pathological changes began in the cerebellum, and later spread to the frontal lobe and the brain stem. In the occipital regions, the vacuolations were associated with accumulation of macrophages and astrocytosis, which implied that the vacuolations were of recent origin. CONCLUSIONS The diagnosis in this patient is adult-onset leukodystrophy with possibly autosomal dominant inheritance. The clinicopathological features are different from those, of previously reported adult-onset leukodystrophies.
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Affiliation(s)
- A Tagawa
- Department of Neurology, Teikyo University School of Medicine, Ichihara Hospital, Ichihara, Japan.
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Ono S, Imai T, Tsumura M, Takahashi K, Jinnai K, Suzuki M, Tagawa A, Shimizu N. Increased serum hyaluronic acid in amyotrophic lateral sclerosis: relation to its skin content. Amyotroph Lateral Scler Other Motor Neuron Disord 2000; 1:213-8. [PMID: 11464955 DOI: 10.1080/14660820050515214] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
BACKGROUND Abnormalities of hyaluronic acid (HA) of skin have been reported in patients with amyotrophic lateral sclerosis (ALS). However, little is known concerning the changes of serum HA in ALS. The purpose of this study was to investigate skin HA content and serum HA levels in ALS patients. METHODS We measured skin HA content and serum HA levels in patients with ALS, and compared the results with those of control subjects. RESULTS Skin HA content in ALS patients was significantly higher than in diseased control subjects and control subjects without neurological disorders, and increased significantly, the longer the duration of illness. Serum HA concentrations in patients with ALS were significantly higher than in diseased control subjects and in healthy control subjects, and were positively and significantly associated with duration of illness. There was an appreciable positive correlation between serum HA concentrations and skin HA content in ALS patients. CONCLUSION These data suggest that a metabolic alteration of HA may take place in ALS and increased levels of serum HA may reflect an increased content of skin HA in ALS.
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Affiliation(s)
- S Ono
- Department of Neurology, Teikyo University, School of Medicine, Ichihara Hospital, Chiba, Japan.
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16
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Tagawa A, Mokuda O, Sakamoto Y, Shimizu N. Streptozotocin-induced diabetic hyperglycaemia produces more EEG activity than normoglycaemia and hypoglycaemia during and after anoxia loading in rats. Diabetes Nutr Metab 2000; 13:62-7. [PMID: 10898122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The brain requires oxygen and glucose for energy metabolism. Electroencephalogram (EEG) was recorded to determine the effect of glucose concentration on the cerebral function in hypoxic episode. Rats were divided into 3 groups: a streptozotocin-induced diabetic hyperglycaemic group, a normoglycaemic group, and an insulin-induced hypoglycaemic group. Hypoxia was induced by ventilating with 100% N2 for 3 min. EEG amplitude both 5 and 10 min after anoxia loading was higher in the diabetic hyperglycaemic than in the normoglycaemic group, though not significantly. Time for decreasing the EEG amplitude during anoxia loading was significantly longer in the hyperglycaemic than in the normoglycaemic group. Time for recovering the EEG amplitude after anoxia loading was significantly shorter in the hyperglycaemic group and was longer, though not significantly, in the hypoglycaemic group than in the normoglycaemic one. These results suggest the brain is more tolerant to hypoxia during diabetic hyperglycaemia than during normoglycaemia.
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Affiliation(s)
- A Tagawa
- Department of Neurology, Teikyo University School of Medicine, Ichihara Hospital, Ichihara City, Japan
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Abstract
A preliminary study on the Noh mask test for analysis of recognition of facial expression was performed. The present study was conducted on 15 normal subjects (mean age: 32 years, SD 9.7 years) as the first step to test for the differences between psychiatric patients and normal subjects. Stimuli were created by photographs of 15 Noh masks at different vertical angles. Subjects were given 12 tasks (12 emotion items), and each task consisted of 15 trials (15 Noh mask images). In each trial, the subject viewed a colour monitor, and was shown an emotion item, followed by a Noh mask image. The subject pressed either the yes or no key to indicate whether the Noh mask image expressed the emotion item. The subject's response and reaction time to each Noh mask image showed no deviation, although the subject's response and reaction time to each emotion item showed some deviation. As the vertical angle of the Noh mask changed, normal subjects recognized all emotion items except the 'uncanny' expression. Factor analysis of the 15 Noh mask images produced three factors, and the analysis of 12 emotion items produced five factors. Thus, the Noh mask test was simplified to nine images and nine items. Further developments of the Noh mask test may include the evaluation of the dysfunction of perception on delicate facial expression in psychiatric patients.
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Affiliation(s)
- S Minoshita
- Department of Medical Sciences, University of Tsukuba, Ibaraki, Japan
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Kakimoto H, Tsuneoka K, Makino S, Miyazaki K, Tagawa A, Murata S, Tamaoki H. [A difficult diagnostic case of small intestinal diverticulum with ulcer]. Nihon Naika Gakkai Zasshi 1992; 81:2013-4. [PMID: 1289453] [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: 12/26/2022]
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