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Matsunuma S, Koshiishi T, Sunaga S, Otsuka K, Okumura E, Yoshimoto K, Jimbo H. Evaluation of high-dose methotrexate completion for primary central nervous system lymphoma using modified Geriatric 8 for functional assessment: A retrospective descriptive study. J Geriatr Oncol 2024; 15:101704. [PMID: 38245426 DOI: 10.1016/j.jgo.2024.101704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Revised: 11/21/2023] [Accepted: 01/09/2024] [Indexed: 01/22/2024]
Affiliation(s)
- Satoru Matsunuma
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
| | - Toru Koshiishi
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
| | - Shigeki Sunaga
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
| | - Kunitoshi Otsuka
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
| | - Eitaro Okumura
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
| | - Koichi Yoshimoto
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
| | - Hiroyuki Jimbo
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji, Tokyo 193-0988, Japan.
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Yokoyama T, Sunaga S, Onuki H, Otsuka K, Jimbo H. Nonconvulsive Status Epilepticus Associated with Cerebral Hyperperfusion Syndrome after Carotid Endarterectomy: A Case Report. NMC Case Rep J 2023; 10:197-202. [PMID: 37465250 PMCID: PMC10351957 DOI: 10.2176/jns-nmc.2022-0333] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 04/10/2023] [Indexed: 07/20/2023] Open
Abstract
We report a case of a 73-year-old man who developed nonconvulsive status epilepticus as a complication of cerebral hyperperfusion syndrome after carotid endarterectomy for carotid artery stenosis. On postoperative day 1, the patient experienced headaches and vomiting. Resting N-isopropyl-p-[123I] iodoamphetamine single-photon emission computed tomography showed increased cerebral blood flow to the entire right hemisphere, and the patient was diagnosed with cerebral hyperperfusion syndrome. He was treated with antihypertensive and antiseizure medications, sedated using propofol, intubated, and placed under mechanical ventilation. On postoperative day 3, computed tomography perfusion imaging showed a reduction in hyperperfusion, and propofol sedation was terminated on postoperative day 4. However, the patient exhibited prolonged impaired awareness and roving eye movements, and long-term video electroencephalographic monitoring revealed electrographic seizures. The patient was diagnosed with nonconvulsive status epilepticus. Propofol sedation was resumed, and the antiseizure medication dose was increased. Subsequently, the state of hyperperfusion in the right hemisphere diminished, and electroencephalographic findings improved, allowing sedation to be terminated on postoperative day 7. The findings from this case suggest that when clinical subtle symptoms, such as impaired awareness and roving eye movements, are observed during treatment of cerebral hyperperfusion syndrome, video electroencephalography should be performed to detect electrographic seizures.
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Affiliation(s)
- Tomoya Yokoyama
- Department of Neurosurgery, Fujieda Municipal General Hospital, Fujieda, Shizuoka, Japan
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Shigeki Sunaga
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Hiroyuki Onuki
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
- Department of Neurosurgery, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - Kunitoshi Otsuka
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Hiroyuki Jimbo
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
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Okumura E, Onuki H, Otsuka K, Sunaga S, Tanaka A, Jimbo H. A Case of Acquired Factor XIII Deficiency with Systemic Lupus Erythematosus Diagnosed after Repeated Intracerebral Hemorrhages. NMC Case Rep J 2023; 10:121-124. [PMID: 37293197 PMCID: PMC10247216 DOI: 10.2176/jns-nmc.2022-0373] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Accepted: 02/09/2023] [Indexed: 06/10/2023] Open
Abstract
We present a case of autoimmune-acquired factor XIII deficiency associated with systemic lupus erythematosus, which was diagnosed as a cause of repeated intracerebral hemorrhage. An intracerebral hemorrhage occurred in a 24-year-old female patient. Craniotomy was performed to remove the hematoma, but rebleeding occurred at the same site on days 2 and 11, respectively. Detailed blood tests revealed that factor XIII activity decreased. Although autoimmune-acquired factor XIII deficiency is a very rare disease, it can sometimes be fatal when intracerebral hemorrhage occurs. If there is repeated intracerebral hemorrhage, factor XIII activity should be confirmed.
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Affiliation(s)
- Eitaro Okumura
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Hiroyuki Onuki
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Kunitoshi Otsuka
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Shigeki Sunaga
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Asashi Tanaka
- Department of Clinical Laboratory Medicine, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Hiroyuki Jimbo
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
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Matsunuma S, Sunaga S, Yoshimoto K, Jimbo H. Interference of New Antiseizure Agents with Hospital Transfer of Stroke Patients in Japan: A Retrospective Cohort Study. Biol Pharm Bull 2023; 46:440-445. [PMID: 36858573 DOI: 10.1248/bpb.b22-00787] [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] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Patients in Japan often have difficulty in screening and selecting chronic-care and rehabilitation hospitals for transfer because of the high cost and unavailability of new antiseizure medications, such as perampanel and lacosamide. To investigate whether the requirement for perampanel and lacosamide interfered with patients' hospital transfer by comparing the number of days required for hospital transfer. Data were obtained from patients 1) who were diagnosed with intracerebral hemorrhage or cerebral infarction, 2) who were treated with antiseizure medications for epilepsy, and 3) who were transferred to another hospital. The main outcome measures were the length of hospital stay and days from the last seizure to hospital transfer.Ninety-four eligible patients were divided into those treated with perampanel or lacosamide (n = 18) and those treated with other agents (n = 76). The mean length of hospital stay and days from the last seizure to hospital transfer were 52.9 and 45.4 d in the perampanel and lacosamide group, and 32.7 and 28.6 d in the other medication group (p < 0.001). The mean antiseizure medication costs and total drug costs were U.S. $4.88 and $6.85 in the perampanel/lacosamide group and U.S. $1.94 and $4.41 in the other medication group (p < 0.001, p = 0.007), respectively. Considering antiseizure medication availability and cost in the transfer destination hospital is important when choosing medications for patients requiring hospital transfer from an acute-care hospital.
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Affiliation(s)
- Satoru Matsunuma
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center
| | - Shigeki Sunaga
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center
| | - Koichi Yoshimoto
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center
| | - Hiroyuki Jimbo
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center
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Okumura E, Jimbo H, Sunaga S, Otsuka K, Okada H, Onitsuka T. Nonocclusive Mesenteric Ischemia Is a Potentially Lethal Complication Just after Stroke Onset: Report of Six Case Studies. NMC Case Rep J 2022; 8:631-635. [PMID: 35079527 PMCID: PMC8769417 DOI: 10.2176/nmccrj.cr.2021-0001] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 05/11/2021] [Indexed: 01/16/2023] Open
Abstract
Nonocclusive mesenteric ischemia (NOMI) is a rare but life-threatening post-stroke complication. This is the first case series report of NOMI after stroke, describing its characteristics and the difficulty of diagnosis. We retrospectively reviewed 367 stroke patients from April 2018 to May 2019 in our hospital. We identified six patients (1.6%) with NOMI after stroke and described their clinical presentation, including characteristics, vital signs, laboratory parameters, treatment, and outcomes. The mean interval between stroke onset and diagnosis of NOMI was 4.6 days (range, 3–10 days). Five patients had disturbance of consciousness caused by stroke, and therefore the major complaints and symptoms associated with NOMI were nonspecific, possibly resulting in delayed diagnosis and treatment. All patients had a high respiratory rate (≥22 breaths/min). C-reactive protein and lactate levels were high (mean, 21.6 mg/L and 2.4 mmol/L, respectively). All patients underwent emergent abdominal operations. Four patients were discharged with modified Rankin Scale scores ≥4, and two patients died. NOMI can be a fatal post-stroke complication and is challenging to diagnose. Further investigations should be conducted to determine the most efficient way to diagnose NOMI after stroke.
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Affiliation(s)
- Eitaro Okumura
- Neurosurgery Department, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan
| | - Hiroyuki Jimbo
- Neurosurgery Department, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan
| | - Shigeki Sunaga
- Neurosurgery Department, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan
| | - Kunitoshi Otsuka
- Neurosurgery Department, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan
| | - Hirofumi Okada
- Neurosurgery Department, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan
| | - Toshiaki Onitsuka
- Neurosurgery Department, Tokyo Medical University Hachioji Medical Center, Hachioji, Tokyo, Japan
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Matsunuma S, Sunaga S, Hoshiai A, Arai T, Jimbo H, Yoshimoto K. Psychiatric disorders of the combination of levetiracetam either with lacosamide or perampanel: a retrospective cohort study. Int J Clin Pharm 2021; 43:1516-1522. [PMID: 34121153 DOI: 10.1007/s11096-021-01274-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Abstract
Background The number of patients with epilepsy receiving perampanel or lacosamide as an add-on treatment following levetiracetam treatment has increased. Although levetiracetam causes psychiatric disorders, it is unclear whether they occur with the combined use of these antiepileptic drugs. Objective To determine the frequency of psychiatric disorders in patients received lacosamide or perampanel in combination with levetiracetam. Setting A single-center retrospective cohort study. Method Patients who received levetiracetam + lacosamide or levetiracetam + perampanel were selected. Medical records from the start of combination therapy contained characteristics of patients and the incidence of psychiatric disorders. Main outcome measure The frequency of psychiatric disorders, the time to onset, dose reduction or discontinuation following psychiatric disorders, and the clinical course following disorder onset. Results Forty-four patients used levetiracetam + lacosamide and 50 used levetiracetam + perampanel. The incidence of psychiatric disorders was significantly lower (p < 0.001) with levetiracetam + lacosamide (6.8%) than with levetiracetam + perampanel (44%). The incidence of affect lability was significantly higher with levetiracetam + perampanel than with levetiracetam + lacosamide (p = 0.018). The time to the onset of psychiatric disorders was within 1 month of dose initiation or increase in one case (33.3%) with levetiracetam + lacosamide and 16 cases (72.7%) with levetiracetam + perampanel. There was no significant difference in clinical characteristics and antiepileptic drug dosages owing to the presence or absence of psychiatric disorders. Conclusion As the frequency of psychiatric disorders was higher with levetiracetam + perampanel therapy, levetiracetam + lacosamide may be preferable. These disorders tended to develop within 1 month of therapy and were not dose-dependent. Antiepileptic drugs should be cautiously prescribed to avoid psychiatric disorders.
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Affiliation(s)
- Satoru Matsunuma
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji City, Tokyo, Japan.
| | - Shigeki Sunaga
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Akira Hoshiai
- Department of Emergency and Critical Care Medicine, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Takao Arai
- Department of Emergency and Critical Care Medicine, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Hiroyuki Jimbo
- Department of Neurosurgery, Tokyo Medical University Hachioji Medical Center, Tokyo, Japan
| | - Koichi Yoshimoto
- Department of Pharmacy, Tokyo Medical University Hachioji Medical Center, 1163 Tatemachi, Hachioji City, Tokyo, Japan
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Arai T, Ohta S, Tsurukiri J, Oomura T, Tanaka Y, Sunaga S, Jimbo H, Ikeda Y, Yukioka T. Acute management of early post-traumatic epilepsy in patients with mild to moderate traumatic brain injury. Trauma 2018. [DOI: 10.1177/1460408617717539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Takao Arai
- Department of Emergency and Critical Care Medicine, Trauma and Emergency Center, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
| | - Shoichi Ohta
- Department of Emergency and Critical Care Medicine, Trauma and Emergency Center, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
| | - Junya Tsurukiri
- Department of Emergency and Critical Care Medicine, Trauma and Emergency Center, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
| | - Taishi Oomura
- Department of Emergency Medicine, Hino Municipal Hospital, Tokyo, Japan
| | - Yousuke Tanaka
- Department of Emergency Medicine, Hino Municipal Hospital, Tokyo, Japan
| | - Shigeki Sunaga
- Department of Neurosurgery, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
| | - Hiroyuki Jimbo
- Department of Neurosurgery, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
| | - Yukio Ikeda
- Department of Neurosurgery, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
| | - Tetsuo Yukioka
- Department of Emergency and Critical Care Medicine, Trauma and Emergency Center, Hachioji Medical Center of Tokyo Medical University, Tokyo, Japan
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Akimoto N, Sunaga S, Kishi A, Hayashi N, Sato T. 260 Establishment and characterization of human sebocytic progenitor cells that can differentiate into functional sebocytes. J Invest Dermatol 2017. [DOI: 10.1016/j.jid.2017.07.258] [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: 11/27/2022]
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Sunaga S, Morino M, Kusakabe T, Sugano H, Shimizu H. Efficacy of hippocampal transection for left temporal lobe epilepsy without hippocampal atrophy. Epilepsy Behav 2011; 21:94-9. [PMID: 21497556 DOI: 10.1016/j.yebeh.2011.02.028] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2010] [Revised: 02/18/2011] [Accepted: 02/24/2011] [Indexed: 11/30/2022]
Abstract
We describe a case of left temporal lobe epilepsy without hippocampal atrophy. A 31-year-old woman presented with typical symptoms of complex partial seizures. Magnetic resonance imaging demonstrated slightly obscure internal structures in the left hippocampus. Scalp electroencephalography revealed interictal epileptiform discharges in the left temporal lobe. A Wada test with propofol determined the language-dominant hemisphere to be the left. Intraoperative electrocorticography revealed active epileptic discharges in the hippocampus and the anterior temporal basal area. The hippocampal epileptic area was treated with multiple transection, which led to the complete cessation of epileptic discharges. After surgery, the Rey Auditory Verbal Learning Test score decreased from 12 to 9. However, it returned to the preoperative level 6months after surgery. We describe this case as a typical example demonstrating the efficacy of hippocampal transection for seizure control and the preservation of verbal memory.
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Affiliation(s)
- Shigeki Sunaga
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, Fuchu, Tokyo, Japan.
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Araragi Y, Ito H, Sunaga S. Filling-in of a line segment presented on one side of the blind spot. J Vis 2010. [DOI: 10.1167/7.9.919] [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] Open
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Affiliation(s)
- H Nozawa
- Department of Surgery, Odaira Memorial Tokyo Hitachi Hospital, Japan.
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Shiokawa D, Shika Y, Araki S, Sunaga S, Mizuta R, Kitamura D, Tanuma S. Stage-specific expression of DNaseγ during B-cell development and its role in B-cell receptor-mediated apoptosis in WEHI-231 cells. Cell Death Differ 2007; 14:992-1000. [PMID: 17218958 DOI: 10.1038/sj.cdd.4402086] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Here, we describe the non-redundant roles of caspase-activated DNase (CAD) and DNasegamma during apoptosis in the immature B-cell line WEHI-231. These cells induce DNA-ladder formation and nuclear fragmentation by activating CAD during cytotoxic drug-induced apoptosis. Moreover, these apoptotic manifestations are accompanied by inhibitor of CAD (ICAD) cleavage and are abrogated by the constitutive expression of a caspase-resistant ICAD mutant. No such nuclear changes occur during oxidative stress-induced necrosis, indicating that neither CAD nor DNasegamma functions under necrotic conditions. Interestingly, the DNA-ladder formation and nuclear fragmentation induced by B-cell receptor ligation occur in the absence of ICAD cleavage and are not significantly affected by the ICAD mutant. Both types of nuclear changes are preceded by the upregulation of DNasegamma expression and are strongly suppressed by 4-(4,6-dichloro-[1, 3, 5]-triazin-2-ylamino)-2-(6-hydroxy-3-oxo-3H-xanthen-9-yl)-benzoic acid (DR396), which is a specific inhibitor of DNasegamma. Our results suggest that DNasegamma provides an alternative mechanism for inducing nuclear changes when the working apoptotic cascade is unsuitable for CAD activation.
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Affiliation(s)
- D Shiokawa
- Department of Biochemistry, Faculty of Pharmaceutical Sciences, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, Japan
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Sugano H, Shimizu H, Sunaga S. Efficacy of intraoperative electrocorticography for assessing seizure outcomes in intractable epilepsy patients with temporal-lobe-mass lesions. Seizure 2006; 16:120-7. [PMID: 17158074 DOI: 10.1016/j.seizure.2006.10.010] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [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: 07/24/2005] [Revised: 01/03/2006] [Accepted: 10/31/2006] [Indexed: 11/23/2022] Open
Abstract
PURPOSE The findings of previous studies have been controversial regarding the optimal surgical procedures required for effective seizure control. In particular, there are varying views as to whether or not lesionectomy of a temporal-lobe-mass lesion is a satisfactory process or whether removal of additional seizure foci is necessary. In this study, we evaluated the efficacy of additional removal of electrically positive foci using intraoperative electrocorticography on mass lesions related to temporal lobe epilepsy. METHODS Thirty-five medically intractable epilepsy patients with temporal-lobe benign mass lesions, who had been surgically treated, were assessed. The relationship between resection of the epilepsy focus using intraoperative electrocorticography and seizure outcome was analyzed. In addition, the sites of residual spikes after lesion removal were evaluated. RESULTS In this study, the benign mass lesions consisted of 21 gangliogliomas, 8 cavernous angiomas and 6 dysembryoplastic neuroepithelial tumors. The number of 3-year postoperative seizure-free incidences for the group that underwent lesionectomy plus additional spike-positive site resection equated to 90.9%. In contrast, in the group that underwent a lesionectomy only, 76.9% were seizure-free for 3-years postoperatively. After complete removal of mass lesions, 86.4% of the residual spikes were detected over the hippocampus. CONCLUSION Even after the complete removal of temporal-lobe-mass lesions, a high frequency of residual spikes was obtained from the hippocampus. Effective surgical seizure control was achieved by carrying out additional procedures on the affected hippocampus. To detect seizure foci surrounding the lesion, especially over the hippocampus, intraoperative electrocorticogram monitoring was shown to be an effective technique.
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Affiliation(s)
- Hidenori Sugano
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, and Juntendo University, Tokyo 183-0042, Japan.
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Utsunomiya T, Shimizu H, Sunaga S, Sugano H, Arai N. [A case of Sturge-Weber syndrome with severe temper tantrum]. No Shinkei Geka 2006; 34:819-24. [PMID: 16910495] [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: 05/11/2023]
Abstract
We report a case of Sturge-Weber syndrome with intractable epilepsy presenting complex partial seizures(CPSs) and severe temper tantrum successfully treated with anterior temporal lobectomy. A 23-month-old girl without facial angioma presented with seizures from 8 months after birth. Neuroradiological examination demonstrated angioma in the left temporooccipital lobes and calcification in the left occipital lobe. Thus she was diagnosed as having Sturge-Weber syndrome. Her parents sought medical advice because of intractable and more frequent CPSs and a change in temperament manifesting as severe temper tantrums. Interictal electroencephalogram (EEG) showed relatively mild abnormal slow wave discharges in the left temporal region. The patient underwent left anterior temporal lobectomy based on intraoperative electrocorticography (ECoG) findings. Histopathological examination demonstrated gliotic change in the amygdala. After the surgery, she has remained seizure-free for 14 months while taking anticonvulsants and temper tantrums ultimately showed remission 10 months following surgery. This case may indicate that severe temper tantrum was associated with a change in amygdala structures.
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Affiliation(s)
- Toshifumi Utsunomiya
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, Fuchu-shi, Tokyo 183-0042, Japan.
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Shimizu H, Kawai K, Sunaga S, Sugano H, Yamada T. Hippocampal transection for treatment of left temporal lobe epilepsy with preservation of verbal memory. J Clin Neurosci 2006; 13:322-8. [PMID: 16517167 DOI: 10.1016/j.jocn.2005.04.020] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [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: 08/31/2004] [Accepted: 04/05/2005] [Indexed: 11/21/2022]
Abstract
Despite good seizure outcome with temporal lobectomy, postoperative impairment of verbal memory remains unsolved. To address this problem we developed a new method, applying the rationale of multiple subpial transection (MST) to the hippocampus. The inferior ventricle is accessed without disrupting the neuronal pathways related to verbal memory. Intraoperative electrocorticography is recorded over the hippocampus and amygdala. After the extent of the epileptic area is determined, multiple transections of the pyramidal layer under the alveus is performed using specially designed ring transectors. After this procedure, epileptic discharges from the hippocampus can be completely abolished. Of 21 cases undergoing this operation, 12 left-sided and nine right-sided, 17 were followed up for more than one year. Fourteen (82%) are seizure free, two (12%) have rare seizures, and one (6%) has significantly improved. Of eight patients who underwent a battery of neuropsychometric tests both before and after left hippocampal transection, postoperative verbal memory was completely preserved in seven cases, and one transiently worsened patient recovered within 6 months. However, these results are still preliminary as the number of patients is small and the follow-up time short. The accumulation of cases and follow-up of greater duration will be necessary to precisely confirm the efficacy of this new technique.
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Affiliation(s)
- Hiroyuki Shimizu
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, 2-6-1 Musashidai, Fuchu, Tokyo 183-0042, Japan.
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Abstract
A 15-year-old boy presented with a dermoid cyst in the left temporal lobe manifesting as complex partial seizures. Magnetic resonance imaging demonstrated a tumor with mixed signal intensity in the left anterior temporal subdural area, but no evidence of rupture. Intraoperatively, the tumor was located mainly in the deep sylvian fissure, adjacent to the amygdala, and had compressed the hippocampus. Intraoperative electrocorticography (ECoG) showed sporadic interictal spikes in both the adjacent areas of the tumor and over the anterior segment of the hippocampus. Total removal of the tumor and gliotic area of the surrounding tissue including the amygdala was performed. The hippocampal epileptic region was treated by transection of the pyramidal layer to preserve verbal memory function. Histological examination showed the dermoid tumor was closely attached to the brain parenchyma. The complex partial seizures ceased completely after surgery. Intraoperative recording of ECoG from the hippocampus and other limbic structures was very important to determine the epileptogenic area even if the tumor did not directly invade the hippocampus.
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Affiliation(s)
- Hidenori Sugano
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital, Japan.
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Shimizu H, Kawai K, Sunaga S, Yamada T. [Surgical treatment for temporal lobe epilepsy with preservation of postoperative memory function]. Rinsho Shinkeigaku 2004; 44:868-70. [PMID: 15651317] [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: 05/01/2023]
Abstract
Temporal lobe epilepsy is frequently drug-resistant in adult epilepsy. However, its surgical treatment is very effective and about 70% of operated patients become seizure-free. As preoperative evaluation, analysis of seizure characteristics, scalp EEG with sphenoidal lead, and neuroimaging are most important. When these noninvasive examinations are concordant in focus localization, surgical treatment without prolonged recording by intracranial electrodes become feasible. In spite of good seizure outcome after temporal lobectomy, postoperative impairment of verbal memory has remained to be a long-standing problem. To cope with this ominous complication, we developed a new surgical method of hippocampal transection, based on the principle of multiple subpial transection (MST). Placing a small corticotomy on the anterior part of superior temporal gyrus, the inferior ventricle is opened through suctioning the temporal stem. Intraoperative electrocorticography (ECoG) is recorded over the hippocampus. After the extent of the epileptic area is determined, the alveus is cut with microscissors and the pyramidal layer is transected in parallel with neuronal fibers by a specially designed ring transector. With this procedure, epileptic discharges from the hippocampus can be completely abolished. In all 7 cases undergoing left hippocampal transection, postoperative verbal memory was preserved with excellent seizure outcome.
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Affiliation(s)
- Hiroyuki Shimizu
- Department of Neurosurgery, Tokyo Metropolitan Neurological Hospital
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18
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Miwakeichi F, Galka A, Uchida S, Arakaki H, Hirai N, Nishida M, Maehara T, Kawai K, Sunaga S, Shimizu H. Impulse response function based on multivariate AR model can differentiate focal hemisphere in temporal lobe epilepsy. Epilepsy Res 2004; 61:73-87. [PMID: 15451010 DOI: 10.1016/j.eplepsyres.2004.06.003] [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: 02/28/2004] [Revised: 06/04/2004] [Accepted: 06/13/2004] [Indexed: 11/20/2022]
Abstract
The purpose of this study is to propose and investigate a new approach for discriminating between focal and non-focal hemispheres in intractable temporal lobe epilepsy, based on applying multivariate time series analysis to the discharge-free background brain activity observed in nocturnal electrocorticogram (ECoG) time series. Five unilateral focal patients and one bilateral focal patient were studied. In order to detect the location of epileptic foci, linear multivariate autoregressive (MAR) models were fitted to the ECoG data; as a new approach for the purpose of summarizing these models in a single relevant parameter, the behavior of the corresponding impulse response functions was studied and described by an attenuation coefficient. In the majority of unilateral focal patients, the averaged attenuation coefficient was found to be almost always significantly larger in the focal hemisphere, as compared to the non-focal hemisphere. Also the amplitude of the fluctuations of the attenuation coefficient was significantly larger in the focal hemisphere. Moreover, in one patient showing a typical regular sleep cycle, the attenuation coefficient in the focal hemisphere tended to be larger during REM sleep and smaller during Non-REM sleep. In the bilateral focal patient, no statistically significant distinction between the hemispheres was found. This study provides encouraging results for new investigations of brain dynamics by multivariate parametric modeling. It opens up the possibility of relating diseases like epilepsy to the properties of inconspicuous background brain dynamics, without the need to record and analyze epileptic seizures or other evidently pathological waveforms.
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Affiliation(s)
- Fumikazu Miwakeichi
- Laboratory for Dynamics of Emergent Intelligence, RIKEN Brain Science Institute, Saitama, Japan.
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19
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Abe M, Sawabe Y, Mochizuki Y, Sunaga S, Izumiyama H, Matsumoto K, Kushima M, Taniyama M, Ban Y, Sano T. Corticotroph cell adenoma without typical manifestations of Cushing's disease presenting with cavernous sinus syndrome following pituitary apoplexy. Endocr J 2001; 48:503-7. [PMID: 11603575 DOI: 10.1507/endocrj.48.503] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
This report presents a unique case of corticotroph cell adenoma in a 30-year-old man without acromegaly or features typical of Cushing's disease, who developed cavernous sinus syndrome following pituitary apoplexy. Magnetic resonance imaging revealed a large intrasellar/suprasellar mass with pituitary hemorrhage and extension of a hematoma to the anterior base of the skull. Urgent transnasal pituitary surgery revealed an acidophilic pituitary adenoma, with immunoreactivity for ACTH and GH and expression of proopiomelanocortin (POMC) and GH messenger ribonucleic acid (mRNA) demonstrated by in situ hybridization. To our knowledge, a silent corticotroph cell adenoma with GH production has never been reported. This type of adenoma may potentially enlarge and develop tumoral hemorrhage because it is free of endocrinological symptoms.
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Affiliation(s)
- M Abe
- Department of Neurosurgery, Showa University School of Medicine, Tokyo, Japan
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20
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Nakatani Y, Tanioka T, Sunaga S, Murakami M, Kudo I. Identification of a cellular protein that functionally interacts with the C2 domain of cytosolic phospholipase A(2)alpha. J Biol Chem 2000; 275:1161-8. [PMID: 10625659 DOI: 10.1074/jbc.275.2.1161] [Citation(s) in RCA: 73] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Cytosolic phospholipase A(2) (cPLA(2)) alpha plays critical roles in lipid mediator synthesis. We performed far-Western analysis and identified a 60-kDa protein (P60) that interacted with cPLA(2)alpha in a Ca(2+)-dependent manner. Peptide microsequencing revealed that purified P60 was identical to vimentin, a major component of the intermediate filament. The interaction occurred between the C2 domain of cPLA(2)alpha and the head domain of vimentin. Immunofluorescence microscopic analysis demonstrated that cPLA(2)alpha and vimentin colocalized around the perinuclear area in cPLA(2)alpha-overexpressing human embryonic kidney 293 cells following A23187 stimulation. Forcible expression of vimentin in vimentin-deficient SW13 cells augmented A23187-induced arachidonate release. Moreover, overexpression of the vimentin head domain in rat fibroblastic 3Y1 cells exerted a dominant inhibitory effect on arachidonate metabolism, significantly reducing A23187-induced arachidonate release and attendant prostanoid generation. These results suggest that vimentin is an adaptor for cPLA(2)alpha to function properly during the eicosanoid-biosynthetic process.
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Affiliation(s)
- Y Nakatani
- Department of Health Chemistry, School of Pharmaceutical Sciences, Showa University, 1-5-8 Hatanodai, Shinagawa-ku, Tokyo 142-8555, Japan
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21
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Horikoshi M, Machida U, Itikawa M, Seo S, Masuda S, Kurokawa M, Ogawa S, Sunaga S, Honda H, Aoki K, Chiba S, Mitani K, Hirai H, Yazaki Y. [Essential thrombocythemia in transformation from myelodysplastic syndrome to acute myeloid leukemia with inv(3) after treatment for gastric cancer]. Rinsho Ketsueki 2000; 41:68-71. [PMID: 10695403] [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: 02/15/2023]
Abstract
In March 1990, a 61-year-old man was given a diagnosis of essential thrombocythemia with a normal karyotype and subsequently treated with hydroxyurea. In November 1995, he underwent surgery for gastric cancer with thereafter received tegafur/uracil for 2 years. Refractory anemia with excess of blasts in transformation and chromosomal abnormalities including -5, -7, 20q-developed in August 1998. Combined chemotherapy with daunorubicin, cytarabine, mercaptopurine, and prednisolone, had only limited effectiveness. Acute myeloid leukemia was finally diagnosed in October 1998, and chromosomal analysis disclosed inv(3) in addition to -5 and -7. The appearance of inv(3) might be related to leukemic transformation of hematopoietic stem cell disease with an increase in the number of megakaryocytes and platelets.
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Affiliation(s)
- M Horikoshi
- Department of Hematology & Oncology, Graduate School of Medicine, University of Tokyo
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22
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Ye SK, Maki K, Kitamura T, Sunaga S, Akashi K, Domen J, Weissman IL, Honjo T, Ikuta K. Induction of germline transcription in the TCRgamma locus by Stat5: implications for accessibility control by the IL-7 receptor. Immunity 1999; 11:213-23. [PMID: 10485656 DOI: 10.1016/s1074-7613(00)80096-5] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.9] [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: 11/23/2022]
Abstract
IL-7 receptor (IL-7R) plays critical roles in lymphocyte development by promoting survival and proliferation and by inducing V(D)J recombination in TCR and Ig loci. Here, we demonstrate that IL-7R-activated Stat5 binds to consensus motifs in the 5' regions of Jgamma segments and induces germline transcripts. We also show that a constitutively active form of Stat5 restores V-J recombination of TCRgamma genes and partially rescues T cell development from IL-7R(-/-) T cell precursors, especially in favor of gammadelta T cells. Therefore, this study reveals a potential role of Stat5 in T cell development and also implies that IL-7R may control the accessibility of the TCRgamma locus through Stat5-induced germline transcription.
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Affiliation(s)
- S K Ye
- Department of Medical Chemistry, Faculty of Medicine, Kyoto University, Japan
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23
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Abe T, Matsumoto K, Sunaga S, Dohi K, Hanakawa K, Shimazu M, Jimbo H, Sasaki K, Izumiyama H, Kushima M. [Metastatic skull tumors from cancers associated with subcutaneous mass lesions]. No To Shinkei 1999; 51:353-9. [PMID: 10363272] [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: 04/13/2023]
Abstract
The incidence of metastatic brain tumors is increasing because of the recent progress in the detection and management of primary cancer. However, metastatic skull tumors from cancers associated with giant subcutaneous mass lesions are rare. We present four patients with metastatic skull tumors: two from hepatic cancer, one from lung cancer, and one from mamma cancer. In these patients, plain skull X-ray and bone CT showed osteolytic lesions. Angiograms revealed a tumor stain fed by abnormal vessels from the external carotid artery. MRI demonstrated masses with marked homogeneous enhancement with the "dural tail sign" in the dura adjacent to the tumors in three skull tumors from hepatic and mamma cancers, and a mass with slightly enhancement without the "dural tail sign" in a skull tumor from lung cancer. At surgery, hemorrhagic well-demarcated tumors were totally removed. The histological diagnosis was skull metastases from cancers in all cases. In cases with the "dural tail sign" on MRI, no tumor cells were seen in the inner layer of the dura and the dura adjacent to the tumors. It is possible that the "dural tail" is due to increased vascular permeability of the dural vessels. The recurrence of these skull tumors was not observed during the follow-up period. Surgical treatment for the metastatic skull tumors from cancers may be indicated to prevent deteriorating neurological symptoms affecting the quality of life.
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Affiliation(s)
- T Abe
- Department of Neurosurgery, Showa University School of Medicine, Tokyo, Japan
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24
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Abe T, Matsumoto K, Shimazu M, Jimbo H, Sunaga S, Dohi K, Sasaki K, Izumiyama H, Ohki S, Fujitani S. [Transnasal microsurgery using a micro-pressure-suction-irrigation system for pituitary adenomas]. No Shinkei Geka 1999; 27:225-31. [PMID: 10190156] [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: 02/11/2023]
Abstract
Micro-pressure-suction-irrigation system (MPSIS), introduced by Luedecke et al, is an instrumentation for the direct transnasal pituitary procedure. We improved this system for use in Japan. The irrigation system can effectively clean the operating field by one-hand manipulation and dissect tumor tissue by its rapid flow. The pressure of suction and irrigation can be adjusted respectively by a device in the handpiece. The MPSIS is applicable to different stages of intervention because it is equipped with separate tips of various diameters, lengths and angles. This system is especially useful in combination with a micromirror or an endoscopy for direct inspection of the eccentric tumor sites such as the cavernous sinus, the upper part of the planum sphenoidale, or the posterior suprasellar regions. The use of the MPSIS helps to avoid injury to normal tissue structures, and prevents tiny soft microadenoma from being lost during preparation. We have proved the suitability and usefulness of the MPSIS in 23 surgical interventions for transnasal microsurgery of pituitary adenomas.
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Affiliation(s)
- T Abe
- Department of Neurosurgery, Showa University School of Medicine, Tokyo
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25
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Iida M, Sunaga S, Hirota N, Kuribayashi N, Sakagami H, Takeda M, Matsumoto K. Effect of glutathione-modulating compounds on hydrogen-peroxide-induced cytotoxicity in human glioblastoma and glioma cell lines. J Cancer Res Clin Oncol 1998; 123:619-22. [PMID: 9620220 DOI: 10.1007/s004320050115] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The relation between the intracellular glutathione (GSH) concentration and hydrogen-peroxide(H2O2)-induced cytotoxicity was investigated. The intracellular GSH concentration in human glioblastoma (T98G, U87MG) and glioma (KG1C) cell lines was one or two orders of magnitude higher than that in a human myelogenous leukemic cell line (HL-60), which showed higher sensitivity to H2O2. Pretreatment of these cell lines with L-buthionine-[S,R]-sulfoximine, which significantly reduced the intracellular GSH concentration, increased their sensitivity against H2O2, whereas pretreatment with N-acetyl-L-cysteine, which did not significantly change the intracellular GSH concentration, only marginally protected the cells from the cytotoxic effect of H2O2. The results suggest that drug sensitivity of tumor cells can be modified by glutathione-modulating compounds.
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Affiliation(s)
- M Iida
- Department of Neurosurgery, School of Medicine, Showa University, Tokyo, Japan
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26
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Ishii S, Kuwaki T, Nagase T, Maki K, Tashiro F, Sunaga S, Cao WH, Kume K, Fukuchi Y, Ikuta K, Miyazaki J, Kumada M, Shimizu T. Impaired anaphylactic responses with intact sensitivity to endotoxin in mice lacking a platelet-activating factor receptor. J Exp Med 1998; 187:1779-88. [PMID: 9607919 PMCID: PMC2212308 DOI: 10.1084/jem.187.11.1779] [Citation(s) in RCA: 220] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Platelet-activating factor (PAF) is a potent phospholipid mediator with diverse biological activities in addition to its well-known ability to stimulate platelet aggregation. Pharmacologic studies had suggested a role for PAF in pregnancy, neuronal cell migration, anaphylaxis, and endotoxic shock. Here we show that disruption of the PAF receptor gene in mice caused a marked reduction in systemic anaphylactic symptoms. Unexpectedly, however, the PAF receptor-deficient mice developed normally, were fertile, and remained sensitive to bacterial endotoxin. These mutant mice clearly show that PAF plays a dominant role in eliciting anaphylaxis, but that it is not essential for reproduction, brain development, or endotoxic shock.
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Affiliation(s)
- S Ishii
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, The University of Tokyo, Tokyo 113, Japan
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27
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Koike Y, Yoneyama A, Shirai J, Ishida T, Shoda E, Miyazaki K, Sunaga S, Horie R, Aoki K, Koike K, Ogata I, Tahara T, Kato T, Nakahara K, Kariya T, Higashihara M. Evaluation of thrombopoiesis in thrombocytopenic disorders by simultaneous measurement of reticulated platelets of whole blood and serum thrombopoietin concentrations. Thromb Haemost 1998; 79:1106-10. [PMID: 9657432] [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: 02/08/2023]
Abstract
To evaluate thrombopoiesis in thrombocytopenic disorders, we simultaneously determined reticulated platelet counts in whole blood by FACScan flow cytometry and serum thrombopoietin (TPO) concentrations by a sensitive sandwich ELISA. The subjects were 40 healthy volunteers and 45 thrombocytopenic patients. In idiopathic thrombocytopenic purpura (ITP), the percentage of reticulated platelets was significantly elevated (5.61 +/- 2.02%: mean +/- SD) relative to normal controls (2.17 +/- 0.90%), but serum TPO concentrations (1.91 +/- 1.27 fmol/l) did not differ significantly from the normal range (1.43 +/- 0.62 fmol/l). The patients with aplastic anemia (AA) had decreased reticulated platelet counts and markedly increased serum TPO concentrations (13.65 +/- 10.64 fmol/l). In thrombocytopenic patients with liver cirrhosis (LC), the absolute number of reticulated platelets (1.65 +/- 1.11 x 10(9)/l) decreased similarly that in AA. However, serum TPO concentrations (1.38 +/- 0.50 fmol/l) did not increase in contrast to AA. Our findings suggested a possible dual mechanism of thrombocytopenia in LC; that is, thrombocytopenia in LC results from the decreased TPO production primarily in the liver adding to an increase in platelet sequestration in the spleen.
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Affiliation(s)
- Y Koike
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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28
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Yoshimoto T, Wang CR, Yoneto T, Waki S, Sunaga S, Komagata Y, Mitsuyama M, Miyazaki J, Nariuchi H. Reduced T helper 1 responses in IL-12 p40 transgenic mice. J Immunol 1998; 160:588-94. [PMID: 9551892] [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: 02/07/2023]
Abstract
To investigate the antagonistic effect of IL-12 p40 on IL-12 activity in vivo, we generated transgenic (Tg) mice in which p40 gene was regulated by a liver-specific promoter. Three Tg mouse lines were generated, and they expressed the p40 transgene predominantly in liver. Serum p40 level was extremely high, and it consisted of mainly monomer and homodimer and also of higher m.w. complexes. These Tg mice did not show any apparent phenotypic difference from control littermates in lymphoid cells. Enhancement of NK cell lytic activity in spleen by administration of rIL-12 to these mice was greatly diminished. Ag induced cytokine production was impaired: decreased production of IFN-gamma and increased production of IL-4 and IL-10. Delayed-type hypersensitivity response was also significantly reduced. Moreover, these Tg mice showed increased susceptibility to the infection with an intracellular pathogen, blood-stage Plasmodium berghei XAT, which is an irradiation-induced attenuated substrain of P. berghei NK65, presumably due to the decreased IFN-gamma production. These results suggest that p40 functions as an IL-12 antagonist in vivo, and that Th1 responses in p40 Tg mice are significantly reduced. Thus, these Tg mice could be a useful model to evaluate the inhibitory effect of p40 on IL-12-mediated various immune responses in vivo.
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Affiliation(s)
- T Yoshimoto
- Department of Allergology, Institute of Medical Science, The University of Tokyo, Japan
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29
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Iso-O N, Hashimoto N, Tanaka A, Sunaga S, Oka T, Kurokawa K, Watanabe T. Cytokine-induced hypoalbuminemia in a patient with hemophagocytic syndrome: direct in vitro evidence for the role of tumor necrosis factor-alpha. Dig Dis Sci 1998; 43:67-73. [PMID: 9508537 DOI: 10.1023/a:1018871920247] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- N Iso-O
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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30
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Takeuchi T, Ueki T, Sunaga S, Ikuta K, Sasaki Y, Li B, Moriyama N, Miyazaki J, Kawabe K. Murine interleukin 4 transgenic heart allograft survival prolonged with down-regulation of the Th1 cytokine mRNA in grafts. Transplantation 1997; 64:152-7. [PMID: 9233716 DOI: 10.1097/00007890-199707150-00026] [Citation(s) in RCA: 33] [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: 02/04/2023]
Abstract
BACKGROUND Data supporting the differential activation of T helper (Th) 2 cells in transplantation acceptance/tolerance in rodents have been presented by several investigators. However, the differential activation of Th2 cells may be simply the result of allograft acceptance/tolerance induction instead of a contribution to the maintenance of grafts. METHODS Therefore, we established interleukin (IL)-4 transgenic mice under the control of a cardiac alpha-myosin heavy chain promotor and transplanted IL-4-expressing heart allografts into unmodified recipients to determine the actual contribution of the Th2 bias to allograft acceptance. RESULTS Among 16 newborn C57BL/6J (B6) mice, three were positive for the IL-4 transgene. Serum IL-4 levels of transgenic versus control B6xC3H F1 mice were not statistically different. Reverse-transcriptase polymerase chain reaction showed that the transgenic B6xC3H F1 mice expressed IL-4 mRNA in the heart and in the lung, whereas control mice did not express IL-4 in any organ. IL-4 mRNA expression in the transgenic but not in the control heart was also confirmed by RNAse protection assay and fluorescence in situ hybridization. The survival of IL-4 transgenic B6xC3H heart grafts heterotopically placed in C3H recipients was prolonged compared with that of nontransgenic grafts (19.0+/-9.1 vs. 6.8+/-2.2 days, P=0.003). Interferon-gamma mRNA expression in IL-4 transgenic heart grafts on the fifth posttransplant day as assessed by Northern blotting was suppressed compared with that in control grafts. Reverse-transcriptase polymerase chain reaction analysis showed that IL-2 mRNA was suppressed in the IL-4 transgenic grafts compared with that in control grafts, while IL-4 mRNA was observed only in IL-4 transgenic grafts. IL-10 mRNA was detected at similar levels in both transgenic and control grafts. CONCLUSIONS A Th2 bias may contribute to allograft acceptance in part by inducing the down-regulation of Th1-cytokine mRNAs, but it may not be sufficient to induce indefinite graft survival.
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Affiliation(s)
- T Takeuchi
- Department of Urology, Faculty of Medicine, University of Tokyo, Bunkyo-ku, Japan
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31
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Sakagami H, Satoh K, Fukuchi K, Kadofuku T, Gomi K, Nakamura K, Kuribayashi N, Sunaga S, Hirota N, Iida M, Makino Y, Kojima T, Shimura H, Takeda M. Effect of methionine depletion on growth and apoptosis in various tumor cell lines. Anticancer Res 1997; 17:2407-10. [PMID: 9252655] [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: 02/05/2023]
Abstract
Sodium ascorbate, sodium 5,6-benzylidene-L-ascorbate (SBA), gallic acid and caffeic acid induced apoptotic cell death in human myelogenous leukemic cell lines, and stimulated oxidation of methionine into methionine sulfoxide in the culture medium. When various tumor cell lines were cultured in methionine-free medium, their growth was nearly terminated at G1 phase of the cell cycle, producing much smaller number of apoptotic cells. Addition of methionine sulfoxide to the methionine-free medium did not stimulate the apoptosis induction. These data suggest that induction of apoptosis by ascorbates, gallate or by caffeate cannot be simply explained by methionine oxidation.
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Affiliation(s)
- H Sakagami
- Department of Biochemistry, Showa University, Tokyo, Japan
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32
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Sunaga S, Maki K, Komagata Y, Miyazaki J, Ikuta K. Developmentally ordered V-J recombination in mouse T cell receptor gamma locus is not perturbed by targeted deletion of the Vgamma4 gene. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.158.9.4223] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
Mouse TCR gamma genes in the gamma1 cluster are arranged in the order of Vgamma5, Vgamma2, Vgamma4, Vgamma3, Jgamma1, and Cgamma1 on the chromosome. During thymic ontogeny, each Vgamma gene recombines with the Jgamma1 gene in the order of proximity to Jgamma1. To explore the mechanism of the ordered recombination, we generated Vgamma4-deficient mice by gene targeting and the Cre/loxP system, by deleting the 4.8-kb DNA region between 3' of the Vgamma2 and 3' of the Vgamma4. In semiquantitative PCR analysis, Vgamma2-Jgamma1 recombination was detected frequently in adult thymus, while Vgamma3-Jgamma1 recombination preferentially occurred in fetal thymus of the mutant mice. There was no difference in the frequency of V-J recombinations between control and mutant mice. Southern blot analysis also revealed that recombination of the Vgamma2 gene occurred as frequently as in control mice. In addition, there was no difference in the levels of germline transcripts of Vgamma2 and Vgamma3 genes between control and mutant mice. Therefore, regulation of the Vgamma-Jgamma recombination was not affected by deletion of the Vgamma4 gene. These results suggest that the ordered recombination is controlled by regulatory elements near each Vgamma gene.
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Affiliation(s)
- S Sunaga
- Department of Disease-Related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
| | - K Maki
- Department of Disease-Related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
| | - Y Komagata
- Department of Disease-Related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
| | - J Miyazaki
- Department of Disease-Related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
| | - K Ikuta
- Department of Disease-Related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
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33
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Sunaga S, Maki K, Komagata Y, Miyazaki J, Ikuta K. Developmentally ordered V-J recombination in mouse T cell receptor gamma locus is not perturbed by targeted deletion of the Vgamma4 gene. J Immunol 1997; 158:4223-8. [PMID: 9126983] [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: 02/04/2023]
Abstract
Mouse TCR gamma genes in the gamma1 cluster are arranged in the order of Vgamma5, Vgamma2, Vgamma4, Vgamma3, Jgamma1, and Cgamma1 on the chromosome. During thymic ontogeny, each Vgamma gene recombines with the Jgamma1 gene in the order of proximity to Jgamma1. To explore the mechanism of the ordered recombination, we generated Vgamma4-deficient mice by gene targeting and the Cre/loxP system, by deleting the 4.8-kb DNA region between 3' of the Vgamma2 and 3' of the Vgamma4. In semiquantitative PCR analysis, Vgamma2-Jgamma1 recombination was detected frequently in adult thymus, while Vgamma3-Jgamma1 recombination preferentially occurred in fetal thymus of the mutant mice. There was no difference in the frequency of V-J recombinations between control and mutant mice. Southern blot analysis also revealed that recombination of the Vgamma2 gene occurred as frequently as in control mice. In addition, there was no difference in the levels of germline transcripts of Vgamma2 and Vgamma3 genes between control and mutant mice. Therefore, regulation of the Vgamma-Jgamma recombination was not affected by deletion of the Vgamma4 gene. These results suggest that the ordered recombination is controlled by regulatory elements near each Vgamma gene.
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Affiliation(s)
- S Sunaga
- Department of Disease-Related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
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Sunaga S, Maki K, Komagata Y, Ikuta K, Miyazaki JI. Efficient removal of loxP-flanked DNA sequences in a gene-targeted locus by transient expression of Cre recombinase in fertilized eggs. Mol Reprod Dev 1997; 46:109-13. [PMID: 9021742 DOI: 10.1002/(sici)1098-2795(199702)46:2<109::aid-mrd1>3.0.co;2-u] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The bacteriophage P1 Cre/loxP site-specific recombination system is a useful tool for engineering chromosomal changes in animal cells. Transient expression of the Cre recombinase gene directly introduced into fertilized eggs by pronuclear injection has been reported to provide an efficient method of transgene modulation in fertilized eggs. In the present study, we examined the efficacy of this method to remove loxP-flanked DNA sequences in a gene-targeted locus in fertilized eggs. We replaced a part of the T-cell receptor gamma (TCR V gamma) locus with homologous sequences containing a loxP-flanked neogene in mouse embryonic stem (ES) cells by gene-targeting technique. The resulting ES cell clones containing the mutant allele (V gamma LNL) were used to generate chimeric mice by blastocyst injection. Eight male chimeras were bred with superovulated wild-type female mice. One hundred and seventy-six fertilized eggs were collected, and subjected to pronuclear injection of the Cre expression plasmid, pCAGGS-Cre, of a covalently closed circular form. Three out of 11 pups inherited the targeted V gamma locus. The inherited targeted allele of these 3 mice was shown to have undergone Cre-mediated recombination, resulting in a deletion of the loxP-flanked sequences (V gamma delta) as shown by Southern blot analysis of DNA from tail biopsies. All 3 founder mutant mice were capable of transmitting the V gamma delta locus to their offspring. The other 8 pups carried only wild-type alleles. There were no pups carrying the unrecombined V gamma LNL locus. Thus, the frequency of Cre-mediated recombination was 100% (3/3) with this method. In contrast, when closed circular pCAGGS-Cre plasmid was introduced into ES cells by electroporation, the recombination frequency of the V gamma LNL locus was 9.6%. These results indicated that our system based on transient expression of the Cre recombinase gene directly introduced into fertilized eggs by pronuclear injection provides a fast and efficient method for generating mutant mice with desired deletions or translocations in target genes.
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Affiliation(s)
- S Sunaga
- Department of Disease-Related Gene Regulation Research (Sandoz), Tokyo, Japan
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35
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Sunaga S, Maki K, Lagasse E, Blanco JC, Ozato K, Miyazaki J, Ikuta K. Myeloid differentiation is impaired in transgenic mice with targeted expression of a dominant negative form of retinoid X receptor beta. Br J Haematol 1997; 96:19-30. [PMID: 9012684 DOI: 10.1046/j.1365-2141.1997.8692483.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
To investigate the in vivo function of retinoid X receptor (RXR) on myelopoiesis, We generated transgenic (Tg) mice with targeted expression of a dominant negative form of RXR beta in myeloid cells. In these Tg mice the transgene is expected to suppress the function of hetero dimeric receptors composed of RXR and its counterparts, such as retinoic acid receptor. Out of 12 mice analysed, one Tg mouse exhibited a severe maturation arrest at the promyelocytic stage. Three other Tg mice showed a mild inhibition of myeloid differentiation, which was further augmented when mice were treated with 5-fluorouracil (5-FU). Furthermore, four Tg mice showed impaired myeloid differentiation in response to the treatment by 5-FU on granulocyte-colony stimulating factor (G-CSF), although they exhibited apparently normal myelopoiesis in the untreated state. The phenotype of Tg mice observed after G-CSF treatment correlated with the expression level of the transgene, although the correlation was not found in untreated mice. These results indicated that myeloid differentiation is perturbed in the Tg mice by the dominant negative effect of the transgenic RXR, indicating that RXR plays a role in myelopoiesis.
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Affiliation(s)
- S Sunaga
- Department of Disease-related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
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Abstract
IL-7R-deficient mice have severely impaired expansion of early lymphocytes and lack gamma delta T cells. To elucidate the role of IL-7R on gamma delta T cell development, we analyzed the rearrangements of TCR-alpha, beta, gamma, and delta genes in the thymus of the IL-7R-deficient mice. Southern blot analysis with a J gamma 1 probe revealed that more than 70% of J gamma 1 and J gamma 2 alleles are recombined to form distinct V gamma 1.2-J gamma 2 and V gamma 2-J gamma 1 fragments in control mice. On the contrary, no such recombination was detected in the mutant mice. The rearrangements in the TCR-alpha, beta, and delta loci were comparably observed in control and mutant mice. PCR analysis indicated that the V-J recombination of all the V gamma genes is severely hampered in the mutant mice. The mRNA of RAG-1, RAG-2, Ku-80, and terminal deoxynucleotidyl transferase (TdT) genes was equally detected between control and mutant thymi, suggesting that the expression of common recombination machinery is not affected. These data demonstrated that the V-J recombination of the TCR gamma genes is specifically blocked in the IL-7R-deficient mice and suggested the presence of highly specific regulation for TCR gamma gene rearrangement.
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MESH Headings
- Animals
- Antigens, CD/metabolism
- Antigens, CD/physiology
- DNA Primers
- DNA-Binding Proteins
- Exons
- Gene Rearrangement, gamma-Chain T-Cell Antigen Receptor
- Heterozygote
- Homeodomain Proteins
- Homozygote
- Immunoglobulin Joining Region/genetics
- Immunoglobulin Variable Region/genetics
- Mice
- Mice, Transgenic
- Phosphoglycerate Kinase/biosynthesis
- Phosphoglycerate Kinase/genetics
- Polymerase Chain Reaction
- Protein Biosynthesis
- Receptors, Antigen, T-Cell, gamma-delta/biosynthesis
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Receptors, Interleukin/metabolism
- Receptors, Interleukin/physiology
- Receptors, Interleukin-7
- Recombination, Genetic
- T-Lymphocytes/immunology
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Affiliation(s)
- K Maki
- Department of Disease-related Gene Regulation Research (Sandoz), Faculty of Medicine, University of Tokyo, Japan
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37
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Watanabe T, Sunaga S, Togo M, Satoh H, Higashihara M, Hashimoto Y, Kurokawa K. Protein kinase C plays a key role in the cross-talk between intracellular signalings via prostanoid receptors in a megakaryoblastic cell line, MEG-01s. Biochim Biophys Acta 1996; 1304:161-9. [PMID: 8954139 DOI: 10.1016/s0005-2760(96)00111-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
In a previous study, we characterized prostanoid and thrombin receptors expressed on a megakaryoblastic cell line, MEG-01s (Blood 78, 2328-2336, 1991). In this study, we examines the mechanism of cross-talk between intracellular Ca2+ ([Ca2+]i) and cAMP signalings through prostanoid and thrombin receptors. Addition of a thromboxane (TX)A2 mimetic (U46619 or STA2) or thrombin stimulated the formation of inositol phosphates and dose-dependently augmented a prostaglandin (PG)I2 mimetic (iloprost)- or forskolin-induced cAMP formation. 12-O-tetradecanoylphorbol-13-acetate (TPA) and ionomycin, to lesser extent, also augmented iloprost-induced cAMP formation. The enhancing effect of U46619 or TPA on cAMP formation was inhibited by prolonged pretreatment of the cells with TPA (2.5 microM, 24 h), but not with calmodulin-antagonists; W-7, W-5, or KN-62. The elevation of [Ca2+]i induced by thrombin, STA2 or PGE2 was significantly suppressed by pretreatment of the cells with TPA (100 nM) as well as cAMP mimetics such as dibutyryl cAMP (5 mM), forskolin (5 microM) and iloprost (1 microM). These results suggest the key role of PKC on the cross-talk between [Ca2+]i and cAMP signalings through prostanoid and thrombin receptors; PKC, which is activated with TXA2 or thrombin, concomitantly suppress further [Ca2+]i elevation and enhances the PGI2 receptor-mediated cAMP formation, which, in turn, suppress [Ca2+]i elevation.
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Affiliation(s)
- T Watanabe
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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38
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Maki K, Sunaga S, Komagata Y, Kodaira Y, Mabuchi A, Karasuyama H, Yokomuro K, Miyazaki JI, Ikuta K. Interleukin 7 receptor-deficient mice lack gammadelta T cells. Proc Natl Acad Sci U S A 1996; 93:7172-7. [PMID: 8692964 PMCID: PMC38955 DOI: 10.1073/pnas.93.14.7172] [Citation(s) in RCA: 270] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The interleukin 7 receptor (IL-7R) plays a crucial role in early B- and T-cell development. It consists of a unique a chain and a common gamma chain [IL-2 receptor gamma chain (IL-2Rgamma)]. Gene inactivation of IL-7, IL-7R, and IL-2Rgamma resulted in severe impairment of B and T lymphopoiesis in mice. In addition, IL-2Rgamma-deficient mice lack gammadelta T cells in the skin and have the impaired development of natural killer (NK) cells and intraepithelial lymphocytes. To explore the role of IL-7/IL-7R system in gammadelta T- and NK-cell development, we have generated and analyzed IL-7R-deficient mice. gammadelta T cells were absent from skin, gut, liver, and spleen in the deficient mice. In contrast, alphabeta T and B cells were detected in reduced, but certain, numbers, and NK cells developed normally. The gammadelta T-cell development in fetal and adult thymus was also completely blocked. These results clearly demonstrate that the signal from IL-7R is indispensable for gammadelta T-cell development in both thymic and extrathymic pathways. On the contrary, it is suggested that NK-cell development requires cytokine(s) other than IL-7.
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MESH Headings
- Animals
- Antigens, CD/genetics
- Antigens, CD/physiology
- B-Lymphocytes/immunology
- Base Sequence
- Crosses, Genetic
- DNA Primers
- Embryo, Mammalian
- Flow Cytometry
- Genomic Library
- Immunologic Deficiency Syndromes/genetics
- Immunologic Deficiency Syndromes/immunology
- Intestines/immunology
- Killer Cells, Natural/immunology
- Liver/immunology
- Lymphocytes/immunology
- Mice
- Mice, Inbred C57BL
- Mice, Inbred Strains
- Mice, Mutant Strains
- Molecular Sequence Data
- Polymerase Chain Reaction
- Receptors, Antigen, T-Cell, gamma-delta
- Receptors, Interleukin/genetics
- Receptors, Interleukin/physiology
- Receptors, Interleukin-7
- Restriction Mapping
- Skin/immunology
- Spleen/immunology
- Stem Cells
- T-Lymphocytes/immunology
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Affiliation(s)
- K Maki
- Department of Disease-Related Gene Regulation Research (Sandoz) Faculty of Medicine, The Univerisity of Tokyo, Japan
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Yoshida T, Ikuta K, Sugaya H, Maki K, Takagi M, Kanazawa H, Sunaga S, Kinashi T, Yoshimura K, Miyazaki J, Takaki S, Takatsu K. Defective B-1 cell development and impaired immunity against Angiostrongylus cantonensis in IL-5R alpha-deficient mice. Immunity 1996; 4:483-94. [PMID: 8630733 DOI: 10.1016/s1074-7613(00)80414-8] [Citation(s) in RCA: 166] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
We generated interleukin-5 receptor alpha chain (IL-5R alpha)-deficient (IL-5R alpha-/-) mice by gene targeting. The IL-5R alpha-/- mice showed decreased numbers of B-1 cells concomitant with low serum concentrations of IgM and IgG3. They showed no IL-5-induced enhancement of B cell responses to T-independent antigens. The number of alpha beta T cell receptor-positive thymocytes tended to decrease in 3-week-old IL-5R alpha-/- mice, returning to normal by 6 weeks of age. The IL-5R alpha-/- mice produced basal levels of eosinophils, while their bone marrow cells failed to form eosinophilic colonies in response to IL-5. Impaired eosinophilopoiesis in IL-5R alpha-/-mice enhanced the survival of Angiostrongylus cantonensis. These results indicate that IL-5-induced eosinophils serve as potent effector cells in the killing of Angiostrongylus cantonensis in mice.
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Affiliation(s)
- T Yoshida
- Department of Immunology, Faculty of Medicine, University of Tokyo, Japan
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40
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Kataoka Y, Yamashita T, Sunaga S, Imada Y, Ishikawa H, Kishima M, Nakazawa M. An enzyme-linked immunosorbent assay (ELISA) for the detection of antibody against Streptococcus suis type 2 in infected pigs. J Vet Med Sci 1996; 58:369-72. [PMID: 8741273 DOI: 10.1292/jvms.58.369] [Citation(s) in RCA: 4] [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] [Indexed: 02/01/2023] Open
Abstract
An ELISA test for the detection of antibody against S. suis type 2 in pigs was developed and applied to field sera. The best sensitivity and specificity of ELISA were obtained when a purified polysaccharide antigen was used. It showed no cross reaction with sera against other serotypes of S. suis and other pathogenic bacteria. A total of 264 sera were collected from 20 pig farms and examined with the antibody against S. suis type 2. In the affected farms, 17.0% of pigs tested were positive, 9.8% in the adjacent farms, but only 3.4% in the free farms. The difference of the positive percentages between the affected and the free farms was statistically significant (P < 0.05).
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Affiliation(s)
- Y Kataoka
- Department of Veterinary Microbiology, Nippon Veterinary and Animal Science University, Musashino, Japan
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41
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Tange T, Hasegawa Y, Oka T, Sunaga S, Higashihara M, Matsuo K, Miyazaki H, Shimosaka A, Okano A, Todokoro K. Establishment and characterization of a new human mesothelioma cell line (T-85) from malignant peritoneal mesothelioma with remarkable thrombocytosis. Pathol Int 1995; 45:791-800. [PMID: 8581142 DOI: 10.1111/j.1440-1827.1995.tb03399.x] [Citation(s) in RCA: 10] [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: 01/31/2023]
Abstract
A mesothelioma cell line, termed T-85, was established from a patient with malignant peritoneal mesothelioma and remarkable thrombocytosis (1.4 x 10(6)/mm3). Electron microscopically, two types of mesothelioma cells have been characterized; the major type of cells with dense-cored granules in the cytoplasm and the minor one with evenly dense granules. Immunologically, the cells showed staining for interleukin-6 (IL-6), cytokeratin, collagen type IV, vimentin, laminin, fibronectin and Factor VIII-related antigen. Quantitation by ELISA revealed a high concentration of IL-6 in T-85 cell culture supernatants. RT-polymerase chain reaction of T-85 cells showed two positive bands of cDNA at 628 and 251 base pairs indicating the constitutive expression of IL-6 and IL-6 receptor mRNA. Moreover, prominent pro-platelet process formation activity in T-85 cell culture supernatants indicated the presence of a thrombopoietic activity due mainly to IL-6 but not the c-Mpl ligand or erythropoietin. However, the fact that 15% of PPF activity remained in the supernatants treated with anti-IL-6 antibody indicated the presence of another thrombopoietic substance. T-85 is so far the first mesothelioma cell line derived from a case with remarkable thrombocytosis.
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Affiliation(s)
- T Tange
- Department of Pathology, Faculty of Medicine, University of Tokyo, Japan
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42
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Abstract
The Kabuki make-up syndrome is characterized by peculiar cranio-facial abnormalities, including cleft lip and palate. A case with velopharyngeal incompetence in a 7-year-old boy is reported. The significance of a possible association of this syndrome with congenital velopharyngeal incompetence is also discussed.
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Affiliation(s)
- K Lan
- First Department of Oral and Maxillofacial Surgery, School of Dentistry, Showa University, Tokyo, Japan
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43
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Abstract
BACKGROUND A high prevalence of thrombocytosis in malignant mesothelioma has been reported, although its pathogenesis remains unknown. METHODS The case of a patient with marked thrombocytosis in peritoneal malignant mesothelioma is reported. To investigate the cytokines responsible for thrombocytosis in this patient, enzyme-linked immunosorbent assay and immunohistochemical analysis were used. RESULTS Tumor cells produced large amounts of interleukin-6 (IL-6) and small amounts of granulocyte macrophage colony stimulating factor (GM-CSF) and monocyte colony stimulating factor (M-CSF). Immunocytochemical staining of tumor cells showed strong positivity for IL-6. CONCLUSIONS These results indicated that persistent secretion of IL-6 promoted thrombogenesis in this patient.
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Affiliation(s)
- M Higashihara
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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44
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Watanabe T, Yatomi Y, Sunaga S, Miki I, Ishii A, Nakao A, Higashihara M, Seyama Y, Ogura M, Saito H. Characterization of prostaglandin and thromboxane receptors expressed on a megakaryoblastic leukemia cell line, MEG-01s. Blood 1991; 78:2328-36. [PMID: 1718495] [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: 12/28/2022] Open
Abstract
MEG-01s, an established human megakaryoblastic leukemia cell line, exhibited specific high-affinity binding sites for [3H]iloprost, a stable prostaglandin (PG) I2 analogue, for [3H]SQ-29548, a stable thromboxane (TX) A2 antagonist and, for [3H]PGE2/PGE1, but not for [3H]PGD2. In the MEG-01s cells, iloprost/PGI2, or PGE1 stimulated cAMP production with ED50 values practically identical to the IC50 values for the [3H] iloprost binding. STA2 and U46619, TXA2/PGH2 agonists, PGE2/PGE1, iloprost/PGI2, and thrombin elevated the intracellular concentrations of Ca2+ ([Ca2+]i), as determined by Fura-2 fluorescence signals. Elevation of [Ca2+]i by PGE2/PGE1 and iloprost, but not that by TX-agonists or thrombin, was totally dependent on the presence of extracellular Ca2+. This effect by PGE2/PGE1 was partially inhibited by prior treatment of the cells with islet-activating protein (IAP), while that by TX-agonists or by PGI2/iloprost was not affected. We tentatively conclude from these results that: (1) MEG-01s cells express (a) PGI2/PGE1 receptor(s) coupled to adenylate cyclase and Ca2+ influx, a TXA2/PGH2 receptor coupled to the phosphatidylinositol-turnover-Ca2+ system, and the PGE2/PGE1 receptor coupled to Ca2+ influx; (2) the receptors for TXA2/PGH2 and iloprost and those for PGE2/PGE1 and thrombin are coupled to IAP-insensitive and IAP-sensitive GTP-binding proteins, respectively, and function in a different manner to elevate [Ca2+]i. Thus, the MEG-01s cell line is a pertinent model for studying eicosanoid receptor-mediated signal transduction in platelet/megakaryocyte systems.
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Affiliation(s)
- T Watanabe
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo, Japan
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45
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Moriya K, Miura N, Sunaga S, Horie R, Aoki K, Yatomi Y, Yoneyama A, Higashihara M, Tanabe A, Nakahara K. [Acute leukemia successfully treated with natural interferon-alpha]. Rinsho Ketsueki 1991; 32:170-2. [PMID: 2027243] [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: 12/29/2022]
Abstract
Natural interferon-alpha (IFN-alpha) alone was administered to a 42-year-old man with acute leukemia, whose bone marrow revealed hypocellularity (NCC = 6 X 10(4)/microliters) and a 50% increase in blasts. Initial chemotherapy regimens, including BHAC-DMP or low dose Ara-C were ineffective. One month after starting nIFN-alpha therapy, the blasts in his bone marrow decreased below 3% and peripheral blood cell counts became normal. He has been in remission for at least 7 months.
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Affiliation(s)
- K Moriya
- First Department of Internal Medicine, Faculty of Medicine, University of Tokyo
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46
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Tatsuno M, Sunaga S. [The effect of electroconvulsive seizure on the brain development of neonatal rats]. No To Hattatsu 1986; 18:207-11. [PMID: 3707767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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47
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Uchida T, Inoue M, Mukai Y, Suzuki Y, Sasa R, Sunaga S. [Dental findings in a case of Cornelia de Lange's syndrome]. Showa Shigakkai Zasshi 1985; 5:160-6. [PMID: 3869323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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48
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Tatsuno M, Sunaga S. [Effect of valproic acid on the brain development of newborn rats]. No To Hattatsu 1985; 17:398-404. [PMID: 3935143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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49
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Sato Y, Sunaga S. [Effect of theophylline on brain development in the perinatal period]. No To Hattatsu 1984; 16:456-62. [PMID: 6518119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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50
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Takagi Y, Sunaga S. [Experimental study of brain development in the perinatal period--effects of anoxia and dexamethasone on thymidine kinase activity and DNA synthesis]. No To Hattatsu 1983; 15:381-9. [PMID: 6661323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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