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Kurahashi N, Ogaya S, Maki Y, Nonobe N, Kumai S, Hosokawa Y, Ogawa C, Yamada K, Maruyama K, Miura K, Nakamura M. Reading impairment after neonatal hypoglycemia with parieto-temporo-occipital injury without cortical blindness: A case report. World J Clin Cases 2023; 11:3899-3906. [PMID: 37383118 PMCID: PMC10294167 DOI: 10.12998/wjcc.v11.i16.3899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/24/2023] [Accepted: 04/27/2023] [Indexed: 06/02/2023] Open
Abstract
BACKGROUND Perinatal brain injury may lead to later neurodevelopmental disorders, whose outcomes may vary due to neuroplasticity in young children. Recent neuroimaging studies have shown that the left parietotemporal area (which includes the left inferior parietal lobe) is associated with phonological awareness and decoding skills, which are essential skills for reading acquisition in children. However, the literature on the effect of perinatal cerebral injury on the development of phonological awareness or decoding ability in childhood is limited.
CASE SUMMARY We report the case of an 8-year-old boy who presented with reading difficulty following a perinatal injury in the parieto-temporal-occipital lobes. The patient was born at term and was treated for hypoglycemia and seizures during the neonatal period. Diffusion-weighted brain magnetic resonance imaging on postnatal day 4 revealed cortical and subcortical hyperintensities in the parieto-temporo-occipital lobe. At the age of 8 years, physical examination was unremarkable, aside from mild clumsiness. Despite occipital lobe injury, the patient had adequate visual acuity, normal eye movement, and no visual field defects. Full-scale intelligence quotient and verbal comprehension index on Wechsler Intelligence Scale for Children-Fourth Edition were 75 and 90, respectively. Further assessment revealed adequate recognition of Japanese Hiragana letters. However, he had significantly slower reading speed in the Hiragana reading test than control children. The phonological awareness test revealed significant errors (standard deviation +2.7) in the mora reversal task.
CONCLUSION Patients with perinatal brain injuries in the parietotemporal area require attention and may benefit from additional reading instructions.
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Affiliation(s)
- Naoko Kurahashi
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
| | - Shunsuke Ogaya
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
| | - Yuki Maki
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Aichi, Japan
| | - Norie Nonobe
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
- Division of Neonatology, Center for Maternal-Neonatal Care Nagoya University Hospital, Nagoya 466-8560, Aichi, Japan
| | - Sumire Kumai
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Aichi, Japan
| | - Yosuke Hosokawa
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
| | - Chikako Ogawa
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
- Department of Pediatrics, Tokyo Metropolitan Fuchu Medical Center for the Disabled, Fuchu 183-0042, Tokyo, Japan
| | - Keitaro Yamada
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
| | - Koichi Maruyama
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
| | - Kiyokuni Miura
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
| | - Miho Nakamura
- Department of Functioning and Disability, Institute for Developmental Research, Aichi Developmental Disability Center, Kasugai 480-0392, Aichi, Japan
- Okazaki Medical Center for Child Development, Okazaki 444-0011, Aichi, Japan
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Maki Y, Natsume J, Ito Y, Okai Y, Bagarinao E, Yamamoto H, Ogaya S, Takeuchi T, Fukasawa T, Sawamura F, Mitsumatsu T, Maesawa S, Saito R, Takahashi Y, Kidokoro H. Involvement of the Thalamus, Hippocampus, and Brainstem in Hypsarrhythmia of West Syndrome: Simultaneous Recordings of Electroencephalography and fMRI Study. AJNR Am J Neuroradiol 2022; 43:1502-1507. [PMID: 36137665 PMCID: PMC9575537 DOI: 10.3174/ajnr.a7646] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 07/27/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND PURPOSE West syndrome is a developmental and epileptic encephalopathy characterized by epileptic spasms, neurodevelopmental regression, and a specific EEG pattern called hypsarrhythmia. Our aim was to investigate the brain activities related to hypsarrhythmia at onset and focal epileptiform discharges in the remote period in children with West syndrome using simultaneous electroencephalography and fMRI recordings. MATERIALS AND METHODS Fourteen children with West syndrome underwent simultaneous electroencephalography and fMRI at the onset of West syndrome. Statistically significant blood oxygen level-dependent responses related to hypsarrhythmia were analyzed using an event-related design of 4 hemodynamic response functions with peaks at 3, 5, 7, and 9 seconds after the onset of each event. Six of 14 children had focal epileptiform discharges after treatment and underwent simultaneous electroencephalography and fMRI from 12 to 25 months of age. RESULTS At onset, positive blood oxygen level-dependent responses were seen in the brainstem (14/14 patients), thalami (13/14), basal ganglia (13/14), and hippocampi (13/14), in addition to multiple cerebral cortices. Group analysis using hemodynamic response functions with peaks at 3, 5, and 7 seconds showed positive blood oxygen level-dependent responses in the brainstem, thalamus, and hippocampus, while positive blood oxygen level-dependent responses in multiple cerebral cortices were seen using hemodynamic response functions with peaks at 5 and 7 seconds. In the remote period, 3 of 6 children had focal epileptiform discharge-related positive blood oxygen level-dependent responses in the thalamus, hippocampus, and brainstem. CONCLUSIONS Positive blood oxygen level-dependent responses with hypsarrhythmia appeared in the brainstem, thalamus, and hippocampus on earlier hemodynamic response functions than the cerebral cortices, suggesting the propagation of epileptogenic activities from the deep brain structures to the neocortices. Activation of the hippocampus, thalamus, and brainstem was still seen in half of the patients with focal epileptiform discharges after adrenocorticotropic hormone therapy.
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Affiliation(s)
- Y Maki
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
| | - J Natsume
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
- Developmental Disability Medicine (J.N.)
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
| | - Y Ito
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
- Department of Pediatrics (Y.I.), Aichi Prefectural Mikawa Aoitori Medical and Rehabilitation Center, Okazaki, Japan
| | - Y Okai
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
- Department of Pediatric Neurology (Y.O.), Toyota Municipal Child Development Center, Toyota, Japan
| | - E Bagarinao
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
| | - H Yamamoto
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
| | - S Ogaya
- Department of Pediatric Neurology (S.O.), Aichi Developmental Disability Center Central Hospital, Kasugai, Japan
| | - T Takeuchi
- Department of Pediatrics (T.T.), Japanese Red Cross Nagoya First Hospital
| | - T Fukasawa
- Nagoya, Japan; and Department of Pediatrics (T.F.), Anjo Kosei Hospital, Anjo, Japan
| | - F Sawamura
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
| | - T Mitsumatsu
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
| | - S Maesawa
- Neurosurgery (S.M., R.S.), Nagoya University Graduate School of Medicine, Nagoya, Japan
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
| | - R Saito
- Neurosurgery (S.M., R.S.), Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Takahashi
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
| | - H Kidokoro
- From the Departments of Pediatrics (Y.M., J.N., Y.I., Y.O., H.Y., F.S., T.M., Y.T., H.K.)
- Brain and Mind Research Center (J.N., Y.I., Y.O., E.B., H.Y., S.M., H.K.), Nagoya University, Nagoya, Japan
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3
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Ito Y, Maki Y, Okai Y, Kidokoro H, Bagarinao E, Takeuchi T, Ohno A, Nakata T, Ishihara N, Okumura A, Yamamoto H, Maesawa S, Natsume J. Involvement of brain structures in childhood epilepsy with centrotemporal spikes. Pediatr Int 2022; 64:e15001. [PMID: 34562291 DOI: 10.1111/ped.15001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/12/2021] [Accepted: 09/21/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND We aimed to investigate electroencephalography (EEG)-functional magnetic resonance imaging (fMRI) findings to elucidate the interictal epileptiform discharge (IED)-related functional alterations in deep brain structures and the neocortex in childhood epilepsy with centrotemporal spikes (CECTS). METHODS Ten children with CECTS (median age 8.2 years), referred to our hospital within a year of onset, were eligible for inclusion. They underwent EEG-fMRI recording during sleep. Llongitudinal evaluations, including medical examinations, intelligence tests, and questionnaires about developmental disabilities, were performed. The initial evaluation was performed at the same time as the EEG-fMRI, and the second evaluation was performed over 2 years after the initial evaluation. RESULTS Three children were unable to maintain sleep during the EEG-fMRI recording, and the remaining seven children were eligible for further assessment. All patients showed unilateral-dominant centrotemporal spikes during scans. One patient had only positive hemodynamic responses, while the others had both positive and negative hemodynamic responses. All patients showed IED-related hemodynamic responses in the bilateral neocortex. For deep brain structures, IED-related hemodynamic responses were observed in the cingulate gyrus (n = 4), basal ganglia (n = 3), thalamus (n = 2), and default mode network (n = 1). Seizure frequencies at the second evaluation were infrequent or absent, and the longitudinal results of intelligence tests and questionnaires were within normal ranges. CONCLUSIONS We demonstrated that IEDs affect broad brain areas, including deep brain structures such as the cingulate gyrus, basal ganglia, and thalamus. Deep brain structures may play an important role in the pathophysiology of CECTS.
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Affiliation(s)
- Yuji Ito
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Pediatrics, Aichi Prefecture Mikawa Aoitori Medical and Rehabilitation Center for Developmental Disabilities, Okazaki, Japan
| | - Yuki Maki
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yu Okai
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Pediatric Neurology, Toyota Municipal Child Development Center, Toyota, Japan
| | - Hiroyuki Kidokoro
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Tomoya Takeuchi
- Department of Pediatrics, Japanese Red Cross Nagoya Daiichi Hospital, Toyota, Japan
| | - Atsuko Ohno
- Department of Pediatric Neurology, Toyota Municipal Child Development Center, Toyota, Japan
| | - Tomohiko Nakata
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoko Ishihara
- Department of Pediatrics, Fujita Health University School of Medicine, Toyoake, Japan
| | - Akihisa Okumura
- Department of Pediatrics, Aichi Medical University, Nagoya, Japan
| | - Hiroyuki Yamamoto
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Satoshi Maesawa
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Neurosurgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun Natsume
- Brain & Mind Research Center, Nagoya University, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Developmental Disability Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
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4
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Suzuki T, Natsume J, Kumai S, Maki Y, Yamamoto H, Numoto S, Narahara S, Kubota T, Tsuji T, Kato T, Yamada K, Maruyama K, Okumura A, Takahashi Y, Kidokoro H. Effectiveness of lacosamide in children and young adults previously treated with other sodium channel blockers. Epilepsy Behav 2021; 125:108397. [PMID: 34814035 DOI: 10.1016/j.yebeh.2021.108397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/13/2021] [Accepted: 10/21/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE This multicenter study examined the effectiveness and tolerability of lacosamide (LCM) for children and young adults with epilepsy, particularly in patients who had previously been treated with other sodium channel blockers (SCBs) and the difference in effectiveness and tolerability when using other concomitant SCBs. METHODS We retrospectively studied the clinical information of patients aged <30 years given LCM to treat epilepsy. The effectiveness and adverse events (AEs) of LCM and the other SCBs were investigated. Factors related to the effectiveness and AEs of LCM, such as the number of antiepileptic drugs (AEDs) tried before LCM and concomitantly used SCBs, were also studied. RESULTS We enrolled 112 patients (median age = 11 years). One year after starting LCM, 29% of the patients were seizure free, and 50% had a ≥50% seizure reduction. Of the patients, 17% experienced AEs, the most common being somnolence. A ≥50% seizure reduction was observed for LCM in 30% of patients in whom other SCBs had not been effective. Lacosamide produced a ≥50% seizure reduction in 35% of the patients taking one concomitant SCB. By contrast, no patients had ≥50% seizure reduction, and 33% developed AEs, when LCM was administered concomitantly with two SCBs. CONCLUSIONS Lacosamide was effective in 30% of children and young adults in whom other SCBs had not been effective. The effectiveness of LCM may differ from that of other SCBs, and it is worth trying in patients with epilepsy resistant to other AEDs.
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Affiliation(s)
- Takeshi Suzuki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun Natsume
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan; Department of Developmental Disability Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Sumire Kumai
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuki Maki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroyuki Yamamoto
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shingo Numoto
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Sho Narahara
- Department of Pediatrics, Anjo Kosei Hospital, Anjo, Japan
| | - Tetsuo Kubota
- Department of Pediatrics, Anjo Kosei Hospital, Anjo, Japan
| | - Takeshi Tsuji
- Department of Pediatrics, Okazaki City Hospital, Okazaki, Japan
| | - Toru Kato
- Department of Pediatrics, Okazaki City Hospital, Okazaki, Japan
| | - Keitaro Yamada
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai, Japan
| | - Koichi Maruyama
- Department of Pediatric Neurology, Central Hospital, Aichi Developmental Disability Center, Kasugai, Japan
| | - Akihisa Okumura
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroyuki Kidokoro
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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5
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Maki Y, Kidokoro H, Okumura A, Yamamoto H, Nakata T, Fukasawa T, Kubota T, Kawaguchi M, Suzuki T, Tanaka M, Okai Y, Sakaguchi Y, Ohno A, Negoro T, Takahashi Y, Natsume J. Repetitive sleep starts: An important differential diagnosis of infantile spasms. Epilepsy Behav 2021; 121:108075. [PMID: 34077901 DOI: 10.1016/j.yebeh.2021.108075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/06/2021] [Accepted: 05/11/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Repetitive sleep starts (RSS) are clusters of nonepileptic, spasm-like movements occurring during sleep onset. However, their characteristics have yet to be defined. We conducted a clinicoelectroencephalographic study of children with RSS to clarify their detailed characteristics. METHODS To differentiate starts from epileptic spasms, we recruited children with brief "crescendo-decrescendo" muscle contractions that simultaneously involved the limbs and trunk without electroencephalogram changes, and that fulfilled the following criteria: (1) repeated occurrence (five or more) and (2) manifestation during sleep stage N1-N2. A total of nine children met these criteria. Their clinical information and video-electroencephalogram data were analyzed retrospectively. RESULTS The background conditions observed at onset of RSS were perinatal hypoxic-ischemic encephalopathy (n = 4), West syndrome of unknown etiology (n = 1), and traumatic brain injury (n = 1). The age at onset of RSS, the number of starts in a given RSS cluster, the interval between starts, and the duration of surface electromyogram activity were between 3 and 46 months, 5 and 547, <1 and 60 s, and 0.3 and 5.4 s, respectively. None of the median value of these parameters differed between children with and without corticospinal tract injury. During the median follow-up period of 33 months, RSS disappeared spontaneously in five. CONCLUSION This is the largest case series of RSS clarifying their clinicoelectroencephalographic characteristics reported to date. To avoid unnecessary antiepileptic therapies, clinicians should be aware of RSS and distinguish it from other disorders involving involuntary movements or seizures, especially epileptic spasms.
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Affiliation(s)
- Yuki Maki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroyuki Kidokoro
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Akihisa Okumura
- Department of Pediatrics, Aichi Medical University, Nagakute, Japan
| | - Hiroyuki Yamamoto
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomohiko Nakata
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Tetsuo Kubota
- Department of Pediatrics, Anjo Kosei Hospital, Anjo, Japan
| | - Masahiro Kawaguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takeshi Suzuki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masaharu Tanaka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yu Okai
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoko Sakaguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atsuko Ohno
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tamiko Negoro
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun Natsume
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan; Department of Developmental Disability Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
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6
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Kawaguchi M, Kidokoro H, Ito R, Shiraki A, Suzuki T, Maki Y, Tanaka M, Sakaguchi Y, Yamamoto H, Takahashi Y, Naganawa S, Natsume J. Age estimates from brain magnetic resonance images of children younger than two years of age using deep learning. Magn Reson Imaging 2021; 79:38-44. [PMID: 33716113 DOI: 10.1016/j.mri.2021.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Revised: 01/19/2021] [Accepted: 03/09/2021] [Indexed: 11/16/2022]
Abstract
The accuracy of brain age estimates from magnetic resonance (MR) images has improved with the advent of deep learning artificial intelligence (AI) models. However, most previous studies on predicting age emphasized aging from childhood to adulthood and old age, and few studies have focused on early brain development in children younger than 2 years of age. Here, we performed brain age estimates based on MR images in children younger than 2 years of age using deep learning. Our AI model, developed with one slice each of raw T1- and T2-weighted images from each subject, estimated brain age with a mean absolute error of 8.2 weeks (1.9 months). The estimates of our AI model were close to those of human specialists. The AI model also estimated the brain age of subjects with a myelination delay as significantly younger than the chronological age. These results indicate that the prediction accuracy of our AI model approached that of human specialists and that our simple method requiring less data and preprocessing facilitates a radiological assessment of brain development, such as monitoring maturational changes in myelination.
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Affiliation(s)
- Masahiro Kawaguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroyuki Kidokoro
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.
| | - Rintaro Ito
- Department of Innovative BioMedical Visualization, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Anna Shiraki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takeshi Suzuki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuki Maki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masaharu Tanaka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yoko Sakaguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroyuki Yamamoto
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yosiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinji Naganawa
- Department of Radiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Jun Natsume
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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7
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Itai T, Miyatake S, Taguri M, Nozaki F, Ohta M, Osaka H, Morimoto M, Tandou T, Nohara F, Takami Y, Yoshioka F, Shimokawa S, Okuno-Yuguchi J, Motobayashi M, Takei Y, Fukuyama T, Kumada S, Miyata Y, Ogawa C, Maki Y, Togashi N, Ishikura T, Kinoshita M, Mitani Y, Kanemura Y, Omi T, Ando N, Hattori A, Saitoh S, Kitai Y, Hirai S, Arai H, Ishida F, Taniguchi H, Kitabatake Y, Ozono K, Nabatame S, Smigiel R, Kato M, Tanda K, Saito Y, Ishiyama A, Noguchi Y, Miura M, Nakano T, Hirano K, Honda R, Kuki I, Takanashi JI, Takeuchi A, Fukasawa T, Seiwa C, Harada A, Yachi Y, Higashiyama H, Terashima H, Kumagai T, Hada S, Abe Y, Miyagi E, Uchiyama Y, Fujita A, Imagawa E, Azuma Y, Hamanaka K, Koshimizu E, Mitsuhashi S, Mizuguchi T, Takata A, Miyake N, Tsurusaki Y, Doi H, Nakashima M, Saitsu H, Matsumoto N. Prenatal clinical manifestations in individuals with COL4A1/2 variants. J Med Genet 2020; 58:505-513. [PMID: 32732225 DOI: 10.1136/jmedgenet-2020-106896] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 05/13/2020] [Accepted: 06/08/2020] [Indexed: 01/16/2023]
Abstract
BACKGROUND Variants in the type IV collagen gene (COL4A1/2) cause early-onset cerebrovascular diseases. Most individuals are diagnosed postnatally, and the prenatal features of individuals with COL4A1/2 variants remain unclear. METHODS We examined COL4A1/2 in 218 individuals with suspected COL4A1/2-related brain defects. Among those arising from COL4A1/2 variants, we focused on individuals showing prenatal abnormal ultrasound findings and validated their prenatal and postnatal clinical features in detail. RESULTS Pathogenic COL4A1/2 variants were detected in 56 individuals (n=56/218, 25.7%) showing porencephaly (n=29), schizencephaly (n=12) and others (n=15). Thirty-four variants occurred de novo (n=34/56, 60.7%). Foetal information was available in 47 of 56 individuals, 32 of whom (n=32/47, 68.1%) had one or more foetal abnormalities. The median gestational age at the detection of initial prenatal abnormal features was 31 weeks of gestation. Only 14 individuals had specific prenatal findings that were strongly suggestive of features associated with COL4A1/2 variants. Foetal ventriculomegaly was the most common initial feature (n=20/32, 62.5%). Posterior fossa abnormalities, including Dandy-Walker malformation, were observed prenatally in four individuals. Regarding extrabrain features, foetal growth restriction was present in 16 individuals, including eight individuals with comorbid ventriculomegaly. CONCLUSIONS Prenatal observation of ventriculomegaly with comorbid foetal growth restriction should prompt a thorough ultrasound examination and COL4A1/2 gene testing should be considered when pathogenic variants are strongly suspected.
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Affiliation(s)
- Toshiyuki Itai
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan.,Clinical Genetics Department, Yokohama City University Hospital, Yokohama, Kanagawa, Japan
| | - Masataka Taguri
- Department of Data Science, Yokohama City University School of Data Science, Yokohama, Kanagawa, Japan
| | - Fumihito Nozaki
- Department of Pediatrics, Shiga Medical Center for Children, Moriyama, Shiga, Japan
| | - Masayasu Ohta
- Department of Pediatrics, JA Toride General Medical Center, Toride, Ibaraki, Japan
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - Masafumi Morimoto
- Division of Pediatrics, Department of Medical Science, School of Nursing, Kyoto Prefectural University of Medicine, Kamigyo-ku, Kyoto, Japan
| | - Tomoko Tandou
- Department of Pediatrics, Yamanashi Prefectural Central Hospital, Kofu, Yamanashi, Japan
| | - Fumikatsu Nohara
- Department of Pediatrics, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Yuichi Takami
- Department of Pediatrics, Japanese Red Cross Society Himeji Hospital, Himeji, Hyogo, Japan
| | | | - Shoko Shimokawa
- Department of Neurosurgery, Saga University, Saga, Saga, Japan
| | - Jiu Okuno-Yuguchi
- Division of Neurology, Nagano Children's Hospital, Azumino, Nagano, Japan
| | - Mitsuo Motobayashi
- Division of Neurology, Nagano Children's Hospital, Azumino, Nagano, Japan
| | - Yuko Takei
- Division of Neurology, Nagano Children's Hospital, Azumino, Nagano, Japan
| | - Tetsuhiro Fukuyama
- Division of Neurology, Nagano Children's Hospital, Azumino, Nagano, Japan
| | - Satoko Kumada
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Yohane Miyata
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan
| | - Chikako Ogawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Yuki Maki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Noriko Togashi
- Department of Neurology, Miyagi Children's Hospital, Sendai, Miyagi, Japan
| | - Teruyuki Ishikura
- Department of Neurology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Makoto Kinoshita
- Department of Neurology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yusuke Mitani
- Department of Pediatrics, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan
| | - Yonehiro Kanemura
- Department of Biomedical Research and Innovation, Institute for Clinical Research and Department of Neurosurgery, National Hospital Organization Osaka National Hospital, Osaka, Osaka, Japan
| | - Tsuyoshi Omi
- Department of Pediatrics, Okinawa Nanbu Medical Treatment and Education Center, Naha, Okinawa, Japan
| | - Naoki Ando
- Department of Pediatrics and Neonatology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Aichi, Japan
| | - Ayako Hattori
- Department of Pediatrics and Neonatology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Aichi, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Graduate School of Medical Sciences, Nagoya City University, Nagoya, Aichi, Japan
| | - Yukihiro Kitai
- Department of Pediatric Neurology, Bobath Memorial Hospital, Osaka, Osaka, Japan
| | - Satori Hirai
- Department of Pediatric Neurology, Bobath Memorial Hospital, Osaka, Osaka, Japan
| | - Hiroshi Arai
- Department of Pediatric Neurology, Bobath Memorial Hospital, Osaka, Osaka, Japan
| | - Fumihiko Ishida
- Perinatal Center for Maternity and Neonate, Yokohama City University Medical Center, Yokohama, Kanagawa, Japan
| | - Hidetoshi Taniguchi
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Yasuji Kitabatake
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Keiichi Ozono
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Shin Nabatame
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Robert Smigiel
- Department of Pediatrics and Rare Disorders, Wroclaw Medical University, Wroclaw, Poland
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Koichi Tanda
- Department of Pediatrics, Japanese Red Cross Kyoto Daiichi Hospital, Kyoto, Kyoto, Japan
| | - Yoshihiko Saito
- Department of Child Neurology, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Akihiko Ishiyama
- Department of Child Neurology, National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - Yushi Noguchi
- Division of Pediatrics and Perinatology, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Mazumi Miura
- Division of Pediatrics and Perinatology, Tottori University Faculty of Medicine, Yonago, Tottori, Japan
| | - Takaaki Nakano
- Department of Neurosurgery, Akiyama Neurosurgical Hospital, Yokohama, Kanagawa, Japan
| | - Keiko Hirano
- Department of Pediatrics, Iwata City Hospital, Iwata, Shizuoka, Japan
| | - Ryoko Honda
- Department of Pediatrics, National Hospital Organisation Nagasaki Medical Center, Omura, Nagasaki, Japan
| | - Ichiro Kuki
- Department of Child Neurology, Osaka City General Hospital, Osaka, Osaka, Japan
| | - Jun-Ichi Takanashi
- Department of Pediatrics, Tokyo Women's Medical University Yachiyo Medical Center, Yachiyo, Chiba, Japan
| | - Akihito Takeuchi
- Division of Neonatology and Neuropediatrics, National Hospital Organization Okayama Medical Center, Okayama, Okayama, Japan
| | - Tatsuya Fukasawa
- Department of Pediatrics, Anjo Kosei Hospital, Anjo, Aichi, Japan
| | - Chizuru Seiwa
- Department of Pediatrics, Yamagata Prefectural Rehabilitation Center for Children with Disabilities, Kaminoyama, Yamagata, Japan
| | - Atsuko Harada
- Department of Pediatric Neurosurgery, Takatsuki General Hospital, Takatsuki, Osaka, Japan
| | - Yusuke Yachi
- Department of Pediatrics, Toyama Prefectural Central Hospital, Toyama, Toyama, Japan
| | - Hiroyuki Higashiyama
- Department of Pediatrics, Toyama Prefectural Central Hospital, Toyama, Toyama, Japan
| | - Hiroshi Terashima
- Division of Neurology, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Tadayuki Kumagai
- Division of Neurology, National Center for Child Health and Development, Setagaya-ku, Tokyo, Japan
| | - Satoshi Hada
- Department of Neonatology, Hiroshima Prefectural Hospital, Hiroshima, Hiroshima, Japan
| | - Yoshiichi Abe
- Department of Pediatrics, Oita University Faculty Of Medicine, Yufu, Oita, Japan
| | - Etsuko Miyagi
- Department of Obstetrics and Gynecology, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Yuri Uchiyama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan.,Department of Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Eri Imagawa
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Yoshiteru Azuma
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Kohei Hamanaka
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Satomi Mitsuhashi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Atsushi Takata
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Yoshinori Tsurusaki
- Faculty of Nutritional Science, Sagami Women's University, Sagamihara, Kanagawa, Japan
| | - Hiroshi Doi
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Kanagawa, Japan
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8
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Hamada N, Ogaya S, Nakashima M, Nishijo T, Sugawara Y, Iwamoto I, Ito H, Maki Y, Shirai K, Baba S, Maruyama K, Saitsu H, Kato M, Matsumoto N, Momiyama T, Nagata KI. De novo PHACTR1 mutations in West syndrome and their pathophysiological effects. Brain 2019; 141:3098-3114. [PMID: 30256902 DOI: 10.1093/brain/awy246] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 08/02/2018] [Indexed: 12/11/2022] Open
Abstract
Trio-based whole exome sequencing identified two de novo heterozygous missense mutations [c.1449T > C/p.(Leu500Pro) and c.1436A > T/p.(Asn479Ile)] in PHACTR1, encoding a molecule critical for the regulation of protein phosphatase 1 (PP1) and the actin cytoskeleton, in unrelated Japanese individuals with West syndrome (infantile spasms with intellectual disability). We then examined the role of Phactr1 in the development of mouse cerebral cortex and the pathophysiological significance of these two mutations and others [c.1561C > T/p.(Arg521Cys) and c.1553T > A/p.(Ile518Asn)], which had been reported in undiagnosed patients with intellectual disability. Immunoprecipitation analyses revealed that actin-binding activity of PHACTR1 was impaired by the p.Leu500Pro, p.Asn479Ile and p.Ile518Asn mutations while the p.Arg521Cys mutation exhibited impaired binding to PP1. Acute knockdown of mouse Phactr1 using in utero electroporation caused defects in cortical neuron migration during corticogenesis, which were rescued by an RNAi-resistant PHACTR1 but not by the four mutants. Experiments using knockdown combined with expression mutants, aimed to mimic the effects of the heterozygous mutations under conditions of haploinsufficiency, suggested a dominant negative effect of the mutant allele. As for dendritic development in vivo, only the p.Arg521Cys mutant was determined to have dominant negative effects, because the three other mutants appeared to be degraded with these experimental conditions. Electrophysiological analyses revealed abnormal synaptic properties in Phactr1-deficient excitatory cortical neurons. Our data show that the PHACTR1 mutations may cause morphological and functional defects in cortical neurons during brain development, which is likely to be related to the pathophysiology of West syndrome and other neurodevelopmental disorders.
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Affiliation(s)
- Nanako Hamada
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan.,Research Fellow of Japan Society for the Promotion of Science, Japan
| | - Shunsuke Ogaya
- Department of Pediatric Neurology, Central Hospital, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan
| | - Mitsuko Nakashima
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Japan
| | - Takuma Nishijo
- Department of Pharmacology, Jikei University School of Medicine, 3-19-18 Nishishimbashi, Minato-ku, Tokyo, Japan
| | - Yuji Sugawara
- Department of Pediatrics, Soka Municipal Hospital, 2-21-1 Soka, Soka, Saitama, Japan
| | - Ikuko Iwamoto
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan
| | - Hidenori Ito
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan
| | - Yuki Maki
- Department of Pediatric Neurology, Central Hospital, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan
| | - Kentaro Shirai
- Department of Pediatrics, Tsuchiura Kyodo Hospital, 4-1-1 Ootsuno, Tsuchiura, Ibaraki, Japan
| | - Shimpei Baba
- Department of Child Neurology, Comprehensive Epilepsy Center, Seirei-Hamamatsu General Hospital, 2-12-12 Sumiyoshi, Naka-ku, Hamamatsu, Shizuoka, Japan
| | - Koichi Maruyama
- Department of Pediatric Neurology, Central Hospital, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Japan
| | - Toshihiko Momiyama
- Department of Pharmacology, Jikei University School of Medicine, 3-19-18 Nishishimbashi, Minato-ku, Tokyo, Japan
| | - Koh-Ichi Nagata
- Department of Molecular Neurobiology, Institute for Developmental Research, Aichi Human Service Center, 713-8 Kamiya, Kasugai, Aichi, Japan.,Department of Neurochemistry, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi, Japan
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9
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Taniguchi A, Kawada JI, Go K, Fujishiro N, Hosokawa Y, Maki Y, Sugiyama Y, Suzuki M, Tsuji T, Hoshino S, Muramatsu H, Kidokoro H, Kinoshita F, Hirakawa A, Takahashi Y, Sato Y, Natsume J. Comparison of Clinical Characteristics of Human Metapneumovirus and Respiratory Syncytial Virus Infections in Hospitalized Young Children. Jpn J Infect Dis 2019; 72:237-242. [PMID: 30814460 DOI: 10.7883/yoken.jjid.2018.480] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Human metapneumovirus (HMPV) and respiratory syncytial virus (RSV) are the leading causes of acute respiratory tract infection in children, and clinical manifestations of these virus infections are considered similar. To investigate the differences in clinical characteristics between HMPV and RSV infections in young children, we prospectively enrolled children < 3 years old who required hospitalization with acute respiratory tract infection due to HMPV or RSV at 10 hospitals in Japan. We enrolled 48 children with HMPV infection and 141 with RSV infection. Patients with HMPV infection were older than those with RSV infection. High-grade fever was more frequently observed in patients with HMPV infection, whereas no significant differences in respiratory symptoms were apparent. Abnormal serum lactate dehydrogenase values and consolidation shadows on chest X-ray were more frequently observed in patients with HMPV infection. During hospitalization, nasal mucus suction was more frequently required in patients with RSV infection. On the other hand, β2-adrenergic agonists, corticosteroids, and leukotriene receptor antagonists were more frequently used in patients with HMPV infection. These findings suggest that HMPV and RSV infections show similar respiratory symptoms, but HMPV infection is more likely to lead to the development of pneumonia, at least among hospitalized young children.
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Affiliation(s)
- Akinobu Taniguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine.,Department of Neonatology, Ogaki Municipal Hospital
| | - Jun-Ichi Kawada
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Kiyotaka Go
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Naozumi Fujishiro
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Yosuke Hosokawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Yuki Maki
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Yuichiro Sugiyama
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | | | | | | | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Hiroyuki Kidokoro
- Department of Pediatrics, Nagoya University Graduate School of Medicine
| | - Fumie Kinoshita
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital
| | - Akihiro Hirakawa
- Center for Advanced Medicine and Clinical Research, Nagoya University Hospital.,Department of Biostatistics and Bioinformatics, Graduate School of Medicine, The University of Tokyo
| | | | - Yoshiaki Sato
- Department of Pediatrics, Nagoya University Graduate School of Medicine.,Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital
| | - Jun Natsume
- Department of Pediatrics, Nagoya University Graduate School of Medicine.,Department of Developmental Disability Medicine, Nagoya University Graduate School of Medicine
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10
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Kurahashi N, Futamura Y, Nonobe N, Ogaya S, Maki Y, Yoshimura I, Suzuki T, Hosokawa Y, Yamada K, Aso K, Maruyama K, Nakamura M. Is hiragana decoding impaired in children with periventricular leukomalacia? Brain Dev 2018; 40:850-856. [PMID: 29908673 DOI: 10.1016/j.braindev.2018.05.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/18/2018] [Accepted: 05/25/2018] [Indexed: 11/17/2022]
Abstract
BACKGROUND There are few studies on hiragana reading skill and phonological awareness in Japanese schoolchildren with periventricular leukomalacia (PVL). METHODS Three seven-year-old children with PVL who had no intellectual disabilities or dysarthria were recruited. Their perinatal information, brain magnetic resonance image (MRI) at term equivalent age, accompanying neurodevelopmental disorders, ophthalmologic features, Kaufman Assessment Battery for Children (K-ABC), a hiragana reading test (four tasks), and a phonological awareness task (mora reversal tasks) were analyzed. RESULTS Patient (Pt) 1 and pt2 were male. Pt2 and pt3 were siblings of triplets. Their gestational age was 28 or 32 weeks, and their birth weights were 1196, 1554, and 1848 g, respectively. Their brain MRI revealed cystic or non-cystic periventricular white matter injury involving the deep white matter at the trigone of both lateral ventricles. Pt1 had attention-deficit/hyperactivity disorder and pt3 had pervasive developmental disorder not otherwise specified. All patients had strabismus with spared best-corrected visual acuity. Scores of Reading/Decoding in K-ABC ranged from 89 to 99. As for the single mora reading task or the non-word reading task in the kana reading test, Z scores of their reading time ranged from 2.3 to 5.9 compared to control children. Pt1 and pt3 made significant errors in the mora reversal task of three-mora words, whereas all patients could answer all words correctly in the mora reversal task of two-mora words. CONCLUSION All children showed significantly prolonged reading time despite their adequate letter recognition. Two patients showed delayed phonological awareness. It was suggested that hiragana decoding impairment due to subcortical and/or cortical injury related to PVL affected their reading ability.
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Affiliation(s)
- Naoko Kurahashi
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Yukiko Futamura
- Department of Ophthalmology, General Hospital Minamiseikyo Hospital, Japan
| | - Norie Nonobe
- Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital, Japan
| | - Shunsuke Ogaya
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan; Department of Pediatrics, Japanese Red Cross Nagoya Daiichi Hospital, Japan
| | - Yuki Maki
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan; Department of Pediatrics, Nagoya University Graduate School of Medicine, Japan
| | - Ikuko Yoshimura
- Department of Child Psychiatry, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Takeshi Suzuki
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Yosuke Hosokawa
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Keitaro Yamada
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Kosaburo Aso
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Koichi Maruyama
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Aichi Human Service Center, Japan
| | - Miho Nakamura
- Department of Functioning Science, Institute for Developmental Research, Aichi Human Service Center, Japan; Okazaki Medical Center for Child Development, Japan.
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11
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Abstract
Population-based studies on dementia prevention have focused on exercise, nutrition, and maintaining social involvement and the effectiveness of these interventions has been determined based on cognitive functions assessed using standardized tests, such as memory function (1, 2). However, the question arises whether all human cognitive functions can be measured with standardized cognitive tests alone. The human brain is assumed to have evolved for cooperation in social settings, and altruistic behaviors and cooperative behaviors have been found mostly in humans. Thus social cognition, which is difficult to be measured with standardized cognitive tests, can be the essence of human cognitive function.
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Affiliation(s)
- Y Maki
- Yohko Maki, National Center for Geriatrics and Gerontology , Japan,
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12
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Yamashita M, Maki Y, Sugimoto R, Ueno T, Toyooka S. P3.17-21 Surgical Treatment for Centrally Located or Hilar Invasive Locally Advanced Lung Cancer. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1977] [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: 12/01/2022]
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13
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Maki Y, Takeichi T, Kono M, Tanaka Y, Akiyama M. Case of mild X-linked ichthyosis complicated with paroxysmal supraventricular tachycardia and anemia. J Dermatol 2018; 45:e275-e276. [PMID: 29569268 DOI: 10.1111/1346-8138.14307] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuki Maki
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takuya Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Michihiro Kono
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | - Masashi Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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14
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Iwase M, Kikuchi M, Nunoi K, Wakisaka M, Maki Y, Sadoshima S, Fujishima M. Blood Pressure Changes in Spontaneously Hypertensive and Normotensive Rats with Neonatal Streptozotocin Induced Type 2 Diabetes. ACTA ACUST UNITED AC 2018. [DOI: 10.1080/07300077.1987.11983332] [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: 10/17/2022]
Affiliation(s)
- M Iwase
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
| | - M Kikuchi
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
| | - K Nunoi
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
| | - M Wakisaka
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
| | - Y Maki
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
| | - S Sadoshima
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
| | - M Fujishima
- Second Department of Internal Medicine, Faculty of Medicine, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka City, 812, Japan
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15
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Maki Y, Ueno T, Sugimoto R, Harada D, Uwatsu K, Kozuki T, Nishikawa A, Nogami N, Kataoka M, Yamashita M. P2.05-009 Outcome of Stereotactic Body Radiotherapy for Clinical Stage I Non Small Cell Lung Cancer and CT Findings: Comparison with Surgical Resection. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.11.036] [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: 11/25/2022]
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16
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Abstract
UNLABELLED We report on the outcomes of flexor tendon repair in zone 2 subzones with early active mobilization in 102 fingers in 88 consecutive patients. There were 28, 53, 15, and six fingers with repairs in zones 2A to 2D, respectively. Rupture of the repair occurred in four fingers, all in zone 2B. Excluding those with repair ruptures, the mean total active motion was 230° (range 143°-286°). Evaluated with Tang's criteria, the outcomes were ranked excellent in 39 fingers, good in 46, fair in ten, poor in three, and failure in four. The outcomes in zone 2C were significantly inferior to those in zones 2B and 2D ( p = 0.02). Our results suggest that the tendon laceration in the area covered by the A2 pulley (zone 2C) is the most difficult area to obtain satisfactory active digital motion and tendon repair in zone 2B is the area where the risk of rupture is highest. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- K Moriya
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - T Yoshizu
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - N Tsubokawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - H Narisawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - S Matsuzawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - Y Maki
- Niigata Hand Surgery Foundation, Niigata, Japan
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17
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Maki Y, Mitsui T, Nagahama K, Takahashi A, Kaji R. Parkin is associated with miRNA processing. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1629] [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: 11/29/2022]
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Kurahashi N, Miyake N, Mizuno S, Koshimizu E, Kurahashi H, Yamada K, Natsume J, Aoki Y, Nakamura M, Taniai H, Maki Y, Abe-Hatano C, Matsumoto N, Maruyama K. Characteristics of epilepsy in patients with Kabuki syndrome with KMT2D mutations. Brain Dev 2017; 39:672-677. [PMID: 28404210 DOI: 10.1016/j.braindev.2017.03.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 03/21/2017] [Accepted: 03/23/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND The characteristics of epilepsy in patients with Kabuki syndrome with KMT2D mutations (KABUK1) have not yet been well documented. This is the first review to explore this. MATERIALS & METHODS We enrolled 14 patients with KABUK1, whose median age was 13.6years (range=4.1-21.3years). Their medical records from October 1981 to May 2016 were retrospectively analyzed. RESULTS Epilepsy was present in 5 (36%) patients. Four of these patients presented with nonsense mutations and one with missense mutations. None presented with brain abnormalities. Four patients presented with annual or monthly focal seizures, of which three evolved to bilateral convulsive seizures. Median onset age of focal epilepsy was 11.8years (range=9.5-12.8years). One presented with monthly myoclonic seizures from age 11.2, whose mother with no other KABUK1 features, had focal epilepsy. The cumulative incidence of epilepsy related to KABUK1 up until age 13 was 45%. Interictal electroencephalogram revealed focal paroxysmal epileptiform discharges (in frontal, central, and parietal regions) in three patients, diffuse high-voltage spike-and-waves in one patient, and normal sleep record in one patient. Myoclonic seizures were rapidly controlled by levetiracetam. In contrast, focal seizures were not controlled in the early period of antiepileptic therapy. CONCLUSION This long-term follow-up of patients with KABUK1 revealed a higher prevalence of epilepsy than previously reported. The age of epilepsy onset and rate of focal seizures evolving to bilateral convulsive seizures in KABUK1 were also higher than previously reported in patients with clinically diagnosed Kabuki syndrome. Although seizure outcome is reported to be favorable in Kabuki syndrome, focal seizures in patients with KABUK1 were not immediately responsive to medication.
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Affiliation(s)
- Naoko Kurahashi
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Japan.
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Japan
| | - Seiji Mizuno
- Department of Pediatrics, Aichi Prefectural Colony Central Hospital, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Japan
| | - Hirokazu Kurahashi
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Japan; Department of Pediatrics, Aichi Medical University, Japan
| | - Keitaro Yamada
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Japan
| | - Jun Natsume
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Japan
| | - Yusuke Aoki
- Department of Neurology, Aichi Children's Health and Medical Center, Japan
| | - Miho Nakamura
- Department of Functioning Science, Institute for Developmental Research, Aichi Human Service Center, Japan
| | - Hiroko Taniai
- Department of Pediatrics, Aichi Prefectural Colony Central Hospital, Japan; Department of Pediatrics, Nagoya Central Care Center for Disabled Children, Japan
| | - Yuki Maki
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Japan
| | - Chihiro Abe-Hatano
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Japan
| | - Koichi Maruyama
- Department of Pediatric Neurology, Aichi Prefectural Colony Central Hospital, Japan
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Ueki K, Inoue M, Maki Y. Validity of the Monte Carlo Method for Shielding Analysis of a Spent-Fuel Shipping Cask: Comparison with Experiment. NUCL SCI ENG 2017. [DOI: 10.13182/nse83-a17795] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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]
Affiliation(s)
- K. Ueki
- Ship Research Institute, Nuclear Ship Division, 6-38-1 Shinkawa, Mitaka, Tokyo 181, Japan
| | - M. Inoue
- Central Research Institute of Electric Power Industry, Structure Department, Civil Engineering Laboratory, 1646 Abiko, Abiko, Ibaraki 270-11, Japan
| | - Y. Maki
- Central Research Institute of Electric Power Industry, Structure Department, Civil Engineering Laboratory, 1646 Abiko, Abiko, Ibaraki 270-11, Japan
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Moriya K, Yoshizu T, Tsubokawa N, Narisawa H, Hara K, Maki Y. Clinical results of releasing the entire A2 pulley after flexor tendon repair in zone 2C. J Hand Surg Eur Vol 2016; 41:822-8. [PMID: 27178574 DOI: 10.1177/1753193416646521] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 03/23/2016] [Indexed: 02/03/2023]
Abstract
UNLABELLED We report the results of complete release of the entire A2 pulley after zone 2C flexor tendon repair followed by early postoperative active mobilization in seven fingers and their comparisons with 33 fingers with partial A2 pulley release. In seven fingers, release of the entire A2 pulley was necessary to allow free gliding of the repairs in five fingers and complete release of both the A2 and C1 pulleys was necessary in two. No bowstringing was clinically evident in any finger. Two fingers required tenolysis. Using Tang's criteria, the function of two digits was ranked as excellent, four good and one fair; there was no failure. The functional return in these seven fingers was similar with that in 33 fingers with partial A2 pulley release; in these patients only one finger required tenolysis. Our results support the suggestion that release of the entire A2 pulley together with the adjacent C1 pulley does not clinically affect finger motion or cause tendon bowstringing, provided that the other pulleys are left intact. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- K Moriya
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - T Yoshizu
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - N Tsubokawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - H Narisawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - K Hara
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - Y Maki
- Niigata Hand Surgery Foundation, Niigata, Japan
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21
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Moriya K, Yoshizu T, Tsubokawa N, Narisawa H, Hara K, Maki Y. Outcomes of release of the entire A4 pulley after flexor tendon repairs in zone 2A followed by early active mobilization. J Hand Surg Eur Vol 2016; 41:400-5. [PMID: 26676484 DOI: 10.1177/1753193415619082] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 10/19/2015] [Indexed: 02/03/2023]
Abstract
We report the outcomes of repair of the flexor digitorum profundus tendon in zone 2a in 22 fingers. The tendon was repaired with a six-strand repair method and the A4 pulley was completely released. Release of the C2 pulley combined with the A4 pulley was necessary in 12 fingers, nine fingers underwent a complete release of the A3, C2, and A4 pulleys, and one finger underwent a release of the C1, A3, C2, and A4 pulleys. The mean total active motion of the three finger joints was 234° at 5 to 12 months of follow-up. No bowstringing was noted in these fingers. The good and excellent recovery of active digital motion was in 20 (91%) out of 22 fingers according to Strickland's criteria or Tang's criteria. Our results suggest that release of the A3, C2, and A4 pulleys makes the repair surgery easier and does not cause tendon bowstringing.
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Affiliation(s)
- K Moriya
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - T Yoshizu
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - N Tsubokawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - H Narisawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - K Hara
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - Y Maki
- Niigata Hand Surgery Foundation, Niigata, Japan
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22
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Affiliation(s)
- K Imao
- Niigata Hand Surgery Foundation, Niigata Prefecture, Japan
| | - N Tsubokawa
- Niigata Hand Surgery Foundation, Niigata Prefecture, Japan
| | - Y Maki
- Niigata Hand Surgery Foundation, Niigata Prefecture, Japan
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23
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Nomura H, Hatogai K, Suzuki S, Maki Y, Mochizuki N, Tanaka M, Kojima T, Saito S. 1627 Febrile neutropenia in patients with esophageal cancer receiving combination chemotherapy of docetaxel, cisplatin, and 5-fluorouracil. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30715-8] [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: 10/22/2022]
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24
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Moriya K, Yoshizu T, Maki Y, Tsubokawa N, Narisawa H, Endo N. Clinical outcomes of early active mobilization following flexor tendon repair using the six-strand technique: short- and long-term evaluations. J Hand Surg Eur Vol 2015; 40:250-8. [PMID: 25249185 DOI: 10.1177/1753193414551682] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We evaluated the factors influencing outcomes of flexor tendon repair in 112 fingers using a six-strand suture with the Yoshizu #1 technique and early postoperative active mobilization in 101 consecutive patients. A total of 32 fingers had injuries in Zone I, 78 in Zone II, and two in Zone III. The mean follow-up period was 6 months; 16 patients (19 fingers) participated in long-term follow-up of 2 to 16 years. The total active motion was 230° SD 29°; it correlated negatively with age. The total active motion was 231° SD 28° after repair of the lacerated flexor digitorum superficialis tendon, and was 205° SD 37° after excision of the flexor digitorum superficialis tendon ends (p = 0.0093). A total of 19 fingers showed no significant increases in total active motion more than 2 years after surgery. The rupture rate was 5.4% in our patients and related to surgeons' level of expertise. Five out of six ruptured tendons were repaired by inexperienced surgeons. Level of Evidence IV.
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Affiliation(s)
- K Moriya
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - T Yoshizu
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - Y Maki
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - N Tsubokawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - H Narisawa
- Niigata Hand Surgery Foundation, Niigata, Japan
| | - N Endo
- Division of Orthopaedic Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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25
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Kitagishi H, Hatada S, Itakura T, Maki Y, Maeda Y, Kano K. Cellular uptake of octaarginine-conjugated tetraarylporphyrin included by per-O-methylated β-cyclodextrin. Org Biomol Chem 2013; 11:3203-11. [PMID: 23584796 DOI: 10.1039/c3ob27248f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This paper describes the synthesis, structural characterization and cellular uptake of a supramolecular 1 : 2 inclusion complex of meso-tetraphenylporphyrin having an octaarginine peptide chain (R8-TPP) and heptakis(2,3,6-tri-O-methyl)-β-cyclodextrin (TMe-β-CD). R8-TPP was synthesized by 2 approaches: (1) on-resin conjugation of the N-terminal of octaarginine with 5-(4-carboxyphenyl)-10,15,20-triphenylporphyrin, followed by cleavage from the resin, and (2) Michael addition reaction between 5-[4-(3-maleimidopropylamido)phenyl]-10,15,20-triphenylporphyrin and cysteine-octaarginine peptide (Cys-Arg8). The R8-TPP obtained from both the approaches formed stable inclusion complexes with TMe-β-CD by which non-substituted phenyl groups at the 10- and 20-positions were included to form trans-type 1 : 2 inclusion complexes. The complexation prevented the self-aggregation of R8-TPP, which resulted in the solubilisation of R8-TPP in aqueous media. A cellular uptake study using HeLa cells showed that R8-TPP complexed with TMe-β-CD in a serum-free medium was efficiently taken up by the cells and uniformly dispersed in the cytosol. In the serum-containing medium, the R8-TPP-TMe-β-CD complex dissociated, and the serum protein bound R8-TPP. The R8-TPP-protein complex was localized in the endosomes of the cells. The cytosol-dispersed R8-TPP showed a higher photo-induced cytotoxicity than its endosome-trapped counterpart.
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Affiliation(s)
- Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Faculty of Science and Engineering, Doshisha University, Tatara, Kyotanabe, Kyoto 610-0321, Japan.
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26
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Mikami B, Maki Y, Hashizume R, Mizutani K, Takahashi N, Matsubara H, Sugita A, Sato K, Yamaguchi S. Crystal structure of enzyme–substrate complex of protein-glutaminase obtained by the mutant of pro-enzyme. Acta Crystallogr A 2012. [DOI: 10.1107/s0108767312096766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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27
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Maki Y. UP-01.101 Clinical Value of Diffusion-Weighted Magnetic Resonance Imaging for the Detection of Prostate Cancer. Urology 2011. [DOI: 10.1016/j.urology.2011.07.653] [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: 10/16/2022]
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28
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Nonaka K, Honda Y, Gushima R, Maki Y, Sakurai K, Iyama K, Sasaki Y. Narrow-band imaging of interdigitating dendritic cell sarcoma originating in the duodenum. Endoscopy 2011; 43 Suppl 2 UCTN:E113-4. [PMID: 21425001 DOI: 10.1055/s-0030-1256146] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- K Nonaka
- Department of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
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29
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Clarkson J, Watt R, Rugg-Gunn A, Pitiphat W, Ettinger R, Horowitz A, Petersen P, ten Cate J, Vianna R, Ferrillo P, Gugushe T, Siriphant P, Pine C, Buzalaf M, Pessan J, Levy S, Chankanka O, Maki Y, Postma T, Villena R, Wang W, MacEntee M, Shinsho F, Cal E, Rudd R, Schou L, Shin S, Fox C. Proceedings: 9th World Congress on Preventive Dentistry (WCPD) “Community Participation and Global Alliances for Lifelong Oral Health for All,” Phuket, Thailand, September 7—10, 2009. Adv Dent Res 2010; 22:2-30. [DOI: 10.1177/0022034510368756] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- J. Clarkson
- Dental School, Trinity College, Dublin, Ireland
| | - R.G. Watt
- Department of Epidemiology and Public Health, UCL, London,
United Kingdom
| | - A.J. Rugg-Gunn
- Newcastle University, Newcastle upon Tyne, United Kingdom
| | - W. Pitiphat
- Department of Community Dentistry, Faculty of Dentistry,
Khon Kaen University, Thailand
| | - R.L. Ettinger
- Department of Prosthodontics and Dows Institute for
Dental Research, University of Iowa, Iowa City, USA
| | - A.M. Horowitz
- School of Public Health, University of Maryland, College
Park, USA
| | - P.E. Petersen
- World Health Organization, Global Oral Health Programme,
WHO, Geneva, Switzerland
| | - J.M. ten Cate
- Royal Netherlands Academy of Arts and Sciences, Academic
Center for Dentistry-Amsterdam, The Netherlands
| | - R. Vianna
- Dental School, Federal University, Rio de Janeiro, Brazil
| | - P. Ferrillo
- University of the Pacific, Arthur A. Dugoni School of
Dentistry, San Francisco, CA, USA
| | - T.S. Gugushe
- School of Dentistry, University of Limpopo, MEDUNSA
Campus, South Africa
| | - P. Siriphant
- Thammasat University, Rangsit Campus, Pathum-Thani,
Thailand
| | - C. Pine
- WHO Collaborating Centre for Community Health Practice
and Research, University of Salford, United Kingdom
| | | | | | - S. Levy
- University of Iowa, Iowa City, USA
| | | | - Y. Maki
- Tokyo Dental College, Chiba, Japan
| | - T.C. Postma
- Department of Dental Management Sciences, School of
Dentistry, University of Pretoria, South Africa
| | - R.S. Villena
- Social Dentistry Department. Peruvian University Cayetano
Heredia, Lima, Peru
| | - W.J. Wang
- Department of Preventive Dentistry, School of Stomatology,
Peking University, Beijing, China
| | - M.I. MacEntee
- Faculty of Dentistry, University of British Columbia,
Vancouver, BC, Canada
| | - F. Shinsho
- Nankoh Community Dental Health Center, Sayo, Hyogo,
Japan
| | - E. Cal
- Department of Prosthodontics, School of Dentistry, Ege
University, Bornova, Turkey
| | - R.E. Rudd
- Harvard School of Public Health, Boston, MA, USA
| | - L. Schou
- Department of Community Dentistry and Faculty of Health
Sciences, University of Copenhagen, Denmark
| | - S.C. Shin
- Department of Preventive Dentistry, Dankook University,
Yongin, Korea
| | - C.H. Fox
- IADR Global Headquarters, Alexandria, VA, USA
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Doi Y, Mizuno T, Maki Y, Jin S, Mizoguchi H, Ikeyama M, Doi M, Michikawa M, Takeuchi H, Suzumura A. Microglia activated with the toll-like receptor 9 ligand CpG attenuate oligomeric amyloid {beta} neurotoxicity in in vitro and in vivo models of Alzheimer's disease. Am J Pathol 2009; 175:2121-32. [PMID: 19834064 DOI: 10.2353/ajpath.2009.090418] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Soluble oligomeric amyloid beta (oAbeta) 1-42 causes synaptic dysfunction and neuronal injury in Alzheimer's disease (AD). Although accumulation of microglia around senile plaques is a hallmark of AD pathology, the role of microglia in oAbeta1-42 neurotoxicity is not fully understood. Here, we showed that oAbeta but not fibrillar Abeta was neurotoxic, and microglia activated with unmethylated DNA CpG motif (CpG), a ligand for Toll-like receptor 9, attenuated oAbeta1-42 neurotoxicity in primary neuron-microglia co-cultures. CpG enhanced microglial clearance of oAbeta1-42 and induced higher levels of the antioxidant enzyme heme oxygenase-1 in microglia without producing neurotoxic molecules such as nitric oxide and glutamate. Among subclasses of CpGs, class B and class C activated microglia to promote neuroprotection. Moreover, intracerebroventricular administration of CpG ameliorated both the cognitive impairments induced by oAbeta1-42 and the impairment of associative learning in Tg2576 mouse model of AD. We propose that CpG may be an effective therapeutic strategy for limiting oAbeta1-42 neurotoxicity in AD.
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Affiliation(s)
- Yukiko Doi
- Department of Neuroimmunology, Research Institute of Environmental Medicine, Nagoya University, Japan
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31
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Asaumi JI, Hisatomi M, Yanagi Y, Unetsubo T, Maki Y, Matsuzaki H, Honda Y, Konouchi H. Evaluation of panoramic radiographs taken at the initial visit at a department of paediatric dentistry. Dentomaxillofac Radiol 2008; 37:340-3. [PMID: 18757719 DOI: 10.1259/dmfr/31214423] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To examine oral and maxillofacial lesions other than those related to the chief complaint in panoramic radiographs taken at the department of paediatric dentistry at our hospital. METHODS We retrospectively reviewed all 1092 patients who had visited the department of paediatric dentistry at our hospital and had a panoramic radiograph taken between August 1999 and October 2004. The following information was obtained from the patients' files and panoramic radiographs: gender, age, chief complaints and the presence or absence of lesions. RESULTS Lesions were observed in 140 of the 1092 panoramic radiographs (12.8%). Among the 140 patients discovered to have lesions in the panoramic radiographs, 66 (47.1%, or 6.05% of the entire group of 1092 patients) had different lesions from those underlying the chief complaint. These 66 patients ages ranged from 3 years to 14 years and the lesions involved 39 (59.1%) missing teeth, 20 (30.3%) mesiodentes, 4 supernumerary teeth, 1 odontoma, 1 radicular cyst and 1 impacted tooth. The missing teeth were observed in the central and lateral incisor, canine, and first and second premolar positions of both jaws, especially in the lower lateral incisor and upper central incisor positions. CONCLUSIONS We were able to detect incidental lesions at a rate of 6.05% (66 of 1092 patients) and at a relatively early age (mean 6.8 years) in the present study. Early treatment of these lesions could avoid maxillofacial deformity and other complications.
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Affiliation(s)
- J-I Asaumi
- Department of Oral and Maxillofacial Radiology, Field of Tumor Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
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Kato M, Claveria FG, Maki Y, Sanda K, Tanaka T, Omata Y, Nagasawa H, Suzuki N. Reactivity of Synthetic SAG1 (p30) Peptide Sequences with RH, S273 and Beverley Strain-Induced Anti- Toxoplasma gondii Antibodies. Pathobiology 2007; 74:50-6. [PMID: 17496433 DOI: 10.1159/000101051] [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] [Received: 07/13/2006] [Accepted: 12/07/2006] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVES We compared the reactivity of IgG1 and IgG2a antibodies in mouse sera after infection with virulent RH and low-virulent S273 and Beverley strains of Toxoplasma gondii against RH SAG1 recombinant p30 (rp30) and synthetic SAG1 peptides. METHODS Infected mouse serum samples were collected 9 days after infection, and the level of total IgG, IgG1 and IgG2a against the RH SAG1 rp30 protein and twenty peptides of the RH SAG1 protein were assessed. The glycosylphosphatidylinositol (GPI) modification site, the hydrophilic-hydrophobic structure, the transmembrane region and the secondary structure of the SAG1 sequence of virulent and low-virulent strains were analyzed using software. RESULTS The virulent strain-infected mice produced a higher level of IgG1 but a lower IgG2a against the rp30 antigen, while the low-virulent strain-infected mice produced a higher level of IgG2a than the virulent strain. The difference in the secondary structure of SAG1 protein between the virulent and low-virulent strain was largely confined to amino acid positions 291-336, showing mutations and GPI anchor site. CONCLUSION The difference in the reactivity of IgG against the rp30 antigen and synthetic peptides between virulent and low-virulent strains points to the importance of the primary and secondary structure assumed by antigens in the activation of Th cells and, subsequently, in the induction of IgG and its subclasses.
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Affiliation(s)
- M Kato
- Obihiro University, Obihiro, Japan
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33
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Doi Y, Maki Y, Mizuno T, Takeuchi H, Suzumura A. The role of microglia on the neurotoxicity of Aβ. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.751] [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: 11/24/2022]
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34
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Shikata N, Maki Y, Noguchi Y, Mori M, Hanai T, Takahashi M, Okamoto M. Multi-layered network structure of amino acid (AA) metabolism characterized by each essential AA-deficient condition. Amino Acids 2006; 33:113-21. [PMID: 17031477 PMCID: PMC7088186 DOI: 10.1007/s00726-006-0412-0] [Citation(s) in RCA: 25] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2006] [Accepted: 08/28/2006] [Indexed: 11/16/2022]
Abstract
The concentrations of free amino acids in plasma change coordinately and their profiles show distinctive features in various physiological conditions; however, their behavior can not always be explained by the conventional flow-based metabolic pathway network. In this study, we have revealed the interrelatedness of the plasma amino acids and inferred their network structure with threshold-test analysis and multilevel-digraph analysis methods using the plasma samples of rats which are fed diet deficient in single essential amino acid. In the inferred network, we could draw some interesting interrelations between plasma amino acids as follows: 1) Lysine is located at the top control level and has effects on almost all of the other plasma amino acids. 2) Threonine plays a role in a hub in the network, which has direct links to the most number of other amino acids. 3) Threonine and methionine are interrelated to each other and form a loop structure.
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Affiliation(s)
- N Shikata
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka, Japan.
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35
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Liu S, Ishikawa H, Tsuyama N, Li FJ, Abroun S, Otsuyama KI, Zheng X, Ma Z, Maki Y, Iqbal MS, Obata M, Kawano MM. Increased susceptibility to apoptosis in CD45(+) myeloma cells accompanied by the increased expression of VDAC1. Oncogene 2006; 25:419-29. [PMID: 16247487 DOI: 10.1038/sj.onc.1208982] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [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: 11/08/2022]
Abstract
Expression of CD45 is quite variable in human myeloma cells and cell lines, such as U266, and CD45(+) U266 proliferates in response to a growth factor, interleukin-6. Here, we show that CD45(+) myeloma cell lines were more sensitive to various apoptotic stimuli, such as oxidative stress and endoplasmic reticulum (ER)-stress, than CD45(-) cells. Reactive oxygen species and calcium ion seemed to be involved in the susceptibility to apoptosis of CD45(+) U266. The activation of the src family kinases associated with CD45 phosphatase played an important role in the augmented apoptosis in CD45(+) U266 by oxidative stress. These results indicate that the CD45-expression renders myeloma cells competent for not only mitogenic but also apoptotic stimuli, resulting in either proliferation or apoptosis of CD45(+) myeloma cells dependently upon the circumstantial stimuli. Furthermore, voltage-dependent anion channel (VDAC) 1 was identified as a gene highly expressed in CD45(+) U266 by cDNA subtraction. The increased expression of VDAC1 seemed to augment the sensitivity to the ER-stress because the VDAC1-transfected U266 was more susceptible to the thapsigargin-induced apoptosis. Thus, CD45 expression accompanied by the increased VDAC1 expression sensitizes myeloma cells to the various extracellular stimuli that trigger apoptosis via the mitochondrial pathways.
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Affiliation(s)
- S Liu
- Laboratory of Cellular Signal Analysis, Department of Bio-Signal Analysis, Applied Medical Engineering Science, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-kogushi, Ube, Yamaguchi 755-8505, Japan
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Matsumoto Y, Sugihara N, Koseki M, Maki Y. A Rapid and Quantitative Detection System for Streptococcus mutans in Saliva Using Monoclonal Antibodies. Caries Res 2005; 40:15-9. [PMID: 16352875 DOI: 10.1159/000088900] [Citation(s) in RCA: 16] [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] [Received: 04/14/2004] [Accepted: 05/16/2005] [Indexed: 11/19/2022] Open
Abstract
A new semiquantitative enumeration system was developed to detect Streptococcus mutans in saliva. Using species-specific monoclonal antibodies, the system quickly detected salivary S. mutans in 30 min and classified the results into three levels. In this study, saliva samples collected from 28 young adults aged between 22 and 24 years were subjected to the monoclonal antibody-based detecting system and selective medium-based detecting methods. The results generated from the PCR-confirmed culture method indicated the mean salivary S. mutans counts at level 1, 2 and 3 were 5.7 x 10(4), 1.3 x 10(5) and 3.4 x 10(6) CFU/ml, respectively. The differences between level 3 and 1 and level 3 and 2 were statistically significant (one-way ANOVA; p < 0.01). The results generated from the system were consistent with the data generated from two culture-based commercial products.
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Affiliation(s)
- Y Matsumoto
- GC Corporation, Research and Developmental Department, Oral Health Care Group, Tokyo, Japan.
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Kato M, Claveria FG, Maki Y, Tanaka T, Suzuki N, Nagasawa H. Toxoplasma gondii antigens GRA1 (p24) and SAG1 (p30): a comparison of their stimulatory influence on T-cell activation and cytokine expression in in vitro cultures. Pathobiology 2005; 72:160-4. [PMID: 15860934 DOI: 10.1159/000084120] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2004] [Accepted: 09/15/2004] [Indexed: 11/19/2022] Open
Abstract
The influence of recombinant cell surface SAG1 (rp30) and secretory GRA1 (rp24) antigens (Ag) on T-cell activation and cytokine induction in vitro was compared. T-cell activity and the level of IFN-gamma, IL-10 and IL-12 expression in rp30-immunized T cells were considerably increased in the presence of rp30 Ags. IgG2a and IgG1 antibodies (Ab) were detected in sera of rp24- and rp30-immunized mice, with the secretory rp24 Ag having induced significantly higher titer of IgG1 Ab. In vitro, the greater antigenicity of surface rp30 Ag was notable based on the level of T-cell activation, and cytokine synthesis suggestive of the participation of Th1 cells. Although, IFN-gamma expression by rp24 Ag was lower compared to rp30 Ag, the synthesis of both IgG2a and IgG1 Abs reflects the protective nature of rp24 Ag. We have generated two recombinant Toxoplasma gondii Ags that demonstrated differences in antigenicity in vitro. It would be interesting to evaluate the mechanism(s) of immunity induced by SAG1 (p30) and GRA1 (p24) Ags against infection with T. gondii in vivo.
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Affiliation(s)
- M Kato
- Department of Biology, College of Science, De La Salle University-Manila, Manila, Philippines
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Abstract
OBJECTIVES The aim of this study was to investigate oral symptoms and clinical parameters in dry eye patients. Subjective reports of the sensation of a dry mouth, salivary flow rates, and clinical parameters of oral disease related to three different types of dry eye patients were examined. SUBJECTS AND METHODS There were 224 individuals, including dry eye patients and control subjects. The dry eye patients were classified into three types: patients with Sjögren's syndrome (SS-DE), patients without SS-DE (non-SS-DE), and patients with Stevens-Johnson syndrome (SJS-DE). Salivary flow rates were measured using two kinds of sialometry. Subjective and objective oral symptoms and signs were also examined. RESULTS AND CONCLUSION Over half of the dry eye patients complained of a dry mouth. The flow rates of their stimulated whole saliva and parotid saliva were significantly lower than those of the control groups (P < 0.05, P < 0.01). The sensation of a dry mouth and changes in oral soft tissues, dental caries, and oral Candida frequently occurred in dry eye patients.
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Affiliation(s)
- M Koseki
- Department of Epidemiology and Public Health, Tokyo Dental College, Chiba, Japan.
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Seng S, Makala LHC, Maki Y, Choi Y, Yokoyama M, Suzuki N, Toyoda Y, Nagasawa H. Unresponsiveness to surface antigen 1 modifies cytokine profiles in acute Toxoplasma gondii infection. Pathobiology 2003; 70:237-46. [PMID: 12679602 DOI: 10.1159/000069335] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2002] [Accepted: 12/08/2002] [Indexed: 11/19/2022] Open
Abstract
Resistance to Toxoplasma gondii involves the development of a highly polarized Th1-type cytokine expression. SAG1 transgenic mice are highly susceptible to T. gondii infection due to their non-reactivity to SAG1 of the protozoan parasite. Here we describe cytokine profiles during the acute phase of T. gondii infection, which are associated with the susceptibility of SAG1 transgenic mice. SAG1 transgenic mice showed a 4.5-fold increase in susceptibility upon inoculation with a sublethal dose of the Beverley strain of T. gondii compared to their wild-type counterparts (mortality: 81 vs. 18%, respectively). When analysis of the most important cytokines involved in the mediation of resistance to infection was carried out, SAG1 transgenic mice exhibited low production levels of IL-12, IFN-gamma and TNF-alpha in sera during the acute phase of T. gondii infection. Antibody and T cells specific for SAG1 were not mounted upon SAG1 stimulation in SAG1 transgenic mice. Moreover, in vitro studies indicated that in SAG1 transgenic mice IFN-gamma and IL-12 production was lower than in their wild-type counterparts, although levels of TNF-alpha increased in SAG1 transgenic mice on day 9 after infection. Low IgG2a levels were detected in SAG1 transgenic mouse sera. Unresponsiveness to SAG1 of T. gondii renders SAG1 transgenic mice unable to develop a strong Th1-based protection against T. gondii infection. These results provide evidence that SAG1 is a pivotal antigen involved in the induction of immune responses towards the development of Th1-protective immunity during T. gondii infection.
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Affiliation(s)
- S Seng
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Hokkaido, Japan
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Tsushima T, Nasu Y, Saika T, Maki Y, Noda M, Suyama B, Yamato T, Kumon H. Optimal starting time for flutamide to prevent disease flare in prostate cancer patients treated with a gonadotropin-releasing hormone agonist. Urol Int 2001; 66:135-9. [PMID: 11316974 DOI: 10.1159/000056592] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/19/2022]
Abstract
OBJECTIVE Flare-up phenomena, such as an increase in prostate-specific antigen (PSA) and/or deterioration of symptoms, are observed in some patients undergoing gonadotropin-releasing hormone (GnRH) agonist therapy. This study was carried out to determine the optimal time for starting the administration of flutamide to prevent flare-up phenomena. PATIENTS AND METHODS Twenty-six patients with prostate cancer and elevated serum levels of PSA were randomly assigned to 5 groups. Group A patients (n = 6) were treated with a subcutaneous injection of 3.75 mg leuprorelin acetate depot alone. Group B, C, D and E patients (5 patients in each group) were treated with 375 mg/day of orally administered flutamide combined with leuprorelin. Flutamide was initiated on the day of leuprorelin injection in group B, and at 1, 2 and 4 weeks before leuprorelin injection in groups C, D and E, respectively. Serum PSA and testosterone levels were measured in each patient. RESULTS Pretreatment with flutamide increased the serum testosterone level, but the testosterone surge after leuprorelin administration was almost the same in all 5 treatment groups. In patients who had been treated with flutamide in combination with leuprorelin, the mean PSA level did not exceed the pretreatment levels after leuprorelin administration. The rate of decrease in PSA in the group receiving simultaneous administration of flutamide with leuprorelin showed a decline comparable to that during the period before leuprorelin administration in the flutamide pretreatment groups. CONCLUSION Simultaneous administration of flutamide with a GnRH agonist is sufficient to prevent flare-up phenomena.
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Affiliation(s)
- T Tsushima
- Department of Urology, Okayama University Medical School, Okayama, Japan.
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Nagaki M, Kimura K, Kimura H, Maki Y, Goto E, Nishino T, Koyama T. Artificial substrates of medium-chain elongating enzymes, hexaprenyl- and heptaprenyl diphosphate synthases. Bioorg Med Chem Lett 2001; 11:2157-9. [PMID: 11514159 DOI: 10.1016/s0960-894x(01)00391-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We examined the reactivity of 3-alkyl group homologues of farnesyl diphosphate or isopentenyl diphosphate for medium-chain prenyl diphosphate synthases, hexaprenyl diphosphate- or heptaprenyl diphosphate synthase. But-3-enyl diphosphate, which lacks the methyl group at the 3-position of isopentenyl diphosphate, condensed only once with farnesyl diphosphate to give E-norgeranylgeranyl diphosphate by the action of either enzyme. However, norfarnesyl diphosphate was never accepted as an allylic substrate at all. 3-Ethylbut-3-enyl diphosphate also reacted with farnesyl diphosphate giving a mixture of (all-E)-3-ethyl-7,11,15-trimethylhexadeca-2,6,10,14-tetraenyl- and (all-E)-3,7-diethyl-11,15,19-trimethylicosa-2,6,10,14,18-pentaenyl diphosphates by hexaprenyl diphosphate synthase. On the other hand, heptaprenyl diphosphate synthase reaction of 3-ethylbut-3-enyl diphosphate with farnesyl diphosphate gave only (all-E)-3-ethyl-7,11,15-trimethylhexadeca-2,6,10,14-tetraenyl diphosphate.
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Affiliation(s)
- M Nagaki
- Department of Materials Science and Technology, Faculty of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, 036-8561, Aomori, Japan.
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Abstract
We propose a system named AIGNET (Algorithms for Inference of Genetic Networks), and introduce two top-down approaches for the inference of interrelated mechanism among genes in genetic network that is based on the steady state and temporal analyses of gene expression patterns against some kinds of gene perturbations such as disruption or overexpression. The former analysis is performed by a static Boolean network model based on multi-level digraph, and the latter one is by S-system model. By integrating these two analyses, we show our strategy is flexible and rich in structure to treat gene expression patterns; we applied our strategy to the inference of a genetic network that is composed of 30 genes as a case study. Given the gene expression time-course data set under the conditions of wild-type and the deletion of one gene, our system enabled us to reconstruct the same network architecture as original one.
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Affiliation(s)
- Y Maki
- Dept. of Biochemical Engineering & Science, Kyushu Institute of Technology, 680-4, Kawazu, Iizuka-city, Fukuoka 820-8502, Japan
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Maki Y. [A behavioral and neurochemical study on the mechanism of the anxiolytic effect of monoamine oxidase inhibitors]. Hokkaido Igaku Zasshi 2001; 76:133-42. [PMID: 11481866] [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: 02/20/2023]
Abstract
The author examined the acute anxiolytic effects of monoamine oxidase inhibitors on freezing behavior, a putative index of anxiety, induced by conditioned fear stress. The selective serotonin1A receptor agonist inhibited freezing dose dependently. The irreversible, non-selective monoamine oxidase inhibitors tranylcypromine (3 and 15 mg/kg) and phenelzine (30 and 80 mg/kg) reduced freezing significantly. Clorgyline (10 mg/kg, irreversible selective monoamine oxidase A inhibitor), Ro 41-1049 (30 mg/kg, reversible selective monoamine oxidase A inhibitor), selegiline (3 mg/kg, irreversible selective monoamine oxidase B inhibitor) and lazabemide (10 mg/kg, reversible selective monoamine oxidase B inhibitor) had no effect on freezing behavior. However, combined administration of clorgyline (10 mg/kg) and selegiline (3 mg/kg) reduced freezing significantly, as well as combined administration of clorgyline (10 mg/kg) and lazabemide (10 mg/kg), Ro 41-1049 (30 mg/kg) and selegiline (3 mg/kg), or Ro 41-1049 (30 mg/kg) and lazabemide (10 mg/kg). These effects of monoamine oxidase inhibitors on freezing were not due to non-specific motor effects. These results suggest that acute inhibition of both monoamine oxidase A and B reduces anxiety or fear, while inhibition of monoamine oxidase A or B alone fails to reduce anxiety or fear. In vivo microdialysis studies showed that the irreversible monoamine oxidase A inhibitor clorgyline and the irreversible monoamine oxidase B inhibitor selegiline induced a mild increase and no increase in extracellular serotonin, respectively. Interestingly, the combined treatment with clorgyline and selegiline resulted in much larger increases in extracellular serotonin in the medial prefrontal cortex than did either monoamine oxidase inhibitor alone. Our previous studies have indicated that facilitation of 5-HT neurotransmission decreases conditioned freezing, i.e., anxiety or fear. The results of these in vivo microdialysis studies may account for the results of this study that the simultaneous blockade of both monoamine oxidase A and B reduced conditioned freezing, whereas blockade of either monoamine oxidase alone failed.
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Affiliation(s)
- Y Maki
- Department of Psychiatry, Neural Function, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
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Tsushima T, Kobashi K, Akebi N, Yamato T, Asahi T, Maki Y, Ohmori H. [Early phase II study of amrubicin (SM-5887) for superficial bladder cancer: a dose-finding study for intravesical chemotherapy]. Gan To Kagaku Ryoho 2001; 28:483-91. [PMID: 11329782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
An early phase II study (dose-finding study) of amrubicin hydrochloride for superficial bladder cancer was conducted. Amrubicin was dissolved in 30 ml of physiological saline and injected intravesically for 6 consecutive days. The drug solution was retained for 2 hours. Patients were randomly assigned to four groups, which were administered amrubicin at doses of 30, 60, 90, and 120 mg/day, respectively. Of 65 patients registered in this study, 63 were eligible and assessable for toxicities, and 55 assessable for efficacy. The response rate at each dose level was 50.0% (7PRs/14 patients) at 30 mg/day, 53.3% (8 PRs/15) at 60 mg/day, 61.5% (2 CRs + 6 PRs/13) at 90 mg/day, and 69.2% (2 CRs + 7 PRs/13) at 120 mg/day, respectively. These data suggests that the efficacy was related to the doses of amrubicin. The major toxicities were cystic irritabilities, such as micturition pain, pollakisuria and hematuria. These toxicities were related to the doses of amrubicin. Their incidence and the severity were not high compared with those reported about other anthracyclines such as doxorubicin and epirubicin. The optimal dose of amrubicin was estimated to be 90 to 120 mg/day in the intravesical treatment for superficial bladder cancer once a day for 6 consecutive days.
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Affiliation(s)
- T Tsushima
- Dept. of Urology, Okayama University Medical School
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Shirakura T, Maki Y, Yoshida H, Arisue N, Wada A, Sánchez LB, Nakamura F, Müller M, Hashimoto T. Characterization of the ribosomal proteins of the amitochondriate protist, Giardia lamblia. Mol Biochem Parasitol 2001; 112:153-6. [PMID: 11166398 DOI: 10.1016/s0166-6851(00)00356-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- T Shirakura
- The Institute of Statistical Mathematics, 4-6-7 Minami-Azabu, Minato-ku, Tokyo 106-8569, Japan
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Kinoshita H, Maki Y, Nakai R, Sen K, Shibai H. Competitive Amino Acid Transport between <sc><font size = -1>L</font></sc>-Tryptophan and Other Amino Acids in Schizophyllum commune. J Biosci Bioeng 2001; 92:556-9. [PMID: 16233145 DOI: 10.1263/jbb.92.556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2001] [Accepted: 09/25/2001] [Indexed: 11/17/2022]
Abstract
In our study on nutritional requirement for the hyphal growth of Schizophyllum commune, we found that a Trp- mutant could not grow in the L-Trp-supplied medium in the presence of L-Ser. Further growth studies showed that not only L-Ser but also as many as 11 kinds of amino acid including L-Ala, L-Arg, L-Asn, L-His, L-Leu, L-Met, L-Phe, L-Ser, L-Thr, L-Tyr and L-Val inhibited the growth of the Trp- mutant in the L-Trp-supplied medium. However, these amino acids did not inhibit the growth of a Trp+ strain. The inhibition of growth of Trp+ strain induced by a Trp analogue of 5-fluoro-DL-tryptophan (5FT), which was usually recovered by L-Trp, was rescued by the same amino acids mentioned above. The exceptions were Gly and L-Ile, which also recovered the growth inhibition induced by 5FT. These results indicate that the permease responsible for the Trp transport in S. commune might also be active to other amino acids. However, it is considered that the permease shows high affinity to L-Trp and low affinity to other amino acids. As a result, the transport of L-Trp and 5FT may be counteracted by other amino acids.
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Affiliation(s)
- H Kinoshita
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Shinshu University, 8304 Minamiminowa, Nagano 399-4598, Japan
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Abstract
BACKGROUND Ribosomes in Escherichia coli change their composition and conformation in the stationary phase. Ribosome modulation factor (RMF) and ribosomal protein S22 are known to be associated with stationary phase ribosomes. RMF association causes the loss of translational activity and the dimerization of 70S ribosomes into 100S ribosomes, which may increase cell survival in the stationary phase. RESULTS Two weakly acidic proteins having related amino acid sequences were found to be associated with E. coli ribosomes in the stationary phase. These proteins are the products of ORFs named yfiA and yhbH. The sum of the copy numbers of their product proteins, YfiA and YhbH, in the ribosomal particles was low in the log phase, but increased to nearly one in the stationary phase. YfiA was found in the 70S ribosomal fraction rather than the 100S. On the other hand, YhbH was detected exclusively in the 100S ribosomal fraction. When the stationary phase cells were transferred to fresh medium, YfiA and YhbH were found in the 70S ribosomal fraction, but not in the polysome fraction. CONCLUSIONS Two proteins, YfiA and YhbH, associated with E. coli ribosomes were found to accumulate in the stationary phase, leading to the formation of several types of ribosomes. They are not likely to have roles in the elongation step of the translation in log phase cells, but are likely to be involved in the stabilization and preservation of ribosomes in the stationary phase, which might be necessary for cell survival.
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Affiliation(s)
- Y Maki
- Japan Science and Technology Corporation, Kawaguchi, Saitama 332-0012, Japan.
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Nawa A, Nishimori K, Lin P, Maki Y, Moue K, Sawada H, Toh Y, Fumitaka K, Nicolson GL. Tumor metastasis-associated human MTA1 gene: its deduced protein sequence, localization, and association with breast cancer cell proliferation using antisense phosphorothioate oligonucleotides. J Cell Biochem 2000. [PMID: 10967548 DOI: 10.1002/1097-4644(20001101)79:2<202::aid-jcb40>3.0.co;2-l] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Using differential cDNA library screening techniques based on metastatic and nonmetastatic rat mammary adenocarcinoma cell lines we previously cloned and sequenced the metastasis-associated gene mta1. Using homology to the rat MTA1 gene we cloned the human MTA1 gene and found it to be overexpressed in a variety of human cell lines. We found a close similarity between the human MTA1 and rat MTA1 genes, as shown by 88% and 96% identities of the nucleotide and predicted amino acid sequences, respectively. Both genes encode novel proteins that contain a proline-rich region (SH3 binding motif), a putative zinc finger motif, a leucine zipper motif, and five copies of the SPXX motif often found in gene regulatory proteins. Using Southern blot analysis, the MTA1 gene was found to be highly conserved among all species examined; and using Northern blot analysis, MTA1 transcripts were found in virtually all cell lines of human origin that were analyzed, including melanoma and breast, cervix and ovarian carcinoma cells and normal breast epithelial cells. However, the expression level of the MTA1 gene in a normal breast epithelial cell was approximately 50% of that found in rapidly growing breast adenocarcinoma cell lines and an atypical mammary cell line. Experimental inhibition of MTA1 protein expression using antisense phosphorothioate oligonucleotides resulted in growth inhibition of human MDA-MB-231 breast cancer cells with relatively high expression of the MTA1 gene. Furthermore, the MTA1 protein was localized in the nuclei of cells transfected using a mammalian expression vector containing the full-length MTA1 gene. The results suggest that the MTA1 protein may function in cellular signaling processes important in the progression and growth of cancer cells, possibly as a nuclear regulatory factor.
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Affiliation(s)
- A Nawa
- Department of Tumor Biology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA
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