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Your search keyword '"Tomoya, Wadayama"' showing total 4 results
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4 results on '"Tomoya, Wadayama"'

1. Phosphatidylinositol-3,4,5-trisphosphate interacts with alpha-synuclein and initiates its aggregation and formation of Parkinson’s disease-related fibril polymorphism

Author

Chi-Jing Choong, César Aguirre, Keita Kakuda, Goichi Beck, Hiroki Nakanishi, Yasuyoshi Kimura, Shuichi Shimma, Kei Nabekura, Makoto Hideshima, Junko Doi, Keiichi Yamaguchi, Kichitaro Nakajima, Tomoya Wadayama, Hideki Hayakawa, Kousuke Baba, Kotaro Ogawa, Toshihide Takeuchi, Shaymaa Mohamed Mohamed Badawy, Shigeo Murayama, Seiichi Nagano, Yuji Goto, Yohei Miyanoiri, Yoshitaka Nagai, Hideki Mochizuki, and Kensuke Ikenaka

Subjects
Cellular and Molecular Neuroscience, Neurology (clinical), Pathology and Forensic Medicine
Abstract

Lipid interaction with α-synuclein (αSyn) has been long implicated in the pathogenesis of Parkinson’s disease (PD). However, it has not been fully determined which lipids are involved in the initiation of αSyn aggregation in PD. Here exploiting genetic understanding associating the loss-of-function mutation in Synaptojanin 1 (SYNJ1), a phosphoinositide phosphatase, with familial PD and analysis of postmortem PD brains, we identified a novel lipid molecule involved in the toxic conversion of αSyn and its relation to PD. We first established a SYNJ1 knockout cell model and found SYNJ1 depletion increases the accumulation of pathological αSyn. Lipidomic analysis revealed SYNJ1 depletion elevates the level of its substrate phosphatidylinositol-3,4,5-trisphosphate (PIP3). We then employed Caenorhabditis elegans model to examine the effect of SYNJ1 defect on the neurotoxicity of αSyn. Mutations in SYNJ1 accelerated the accumulation of αSyn aggregation and induced locomotory defects in the nematodes. These results indicate that functional loss of SYNJ1 promotes the pathological aggregation of αSyn via the dysregulation of its substrate PIP3, leading to the aggravation of αSyn-mediated neurodegeneration. Treatment of cultured cell line and primary neurons with PIP3 itself or with PIP3 phosphatase inhibitor resulted in intracellular formation of αSyn inclusions. Indeed, in vitro protein–lipid overlay assay validated that phosphoinositides, especially PIP3, strongly interact with αSyn. Furthermore, the aggregation assay revealed that PIP3 not only accelerates the fibrillation of αSyn, but also induces the formation of fibrils sharing conformational and biochemical characteristics similar to the fibrils amplified from the brains of PD patients. Notably, the immunohistochemical and lipidomic analyses on postmortem brain of patients with sporadic PD showed increased PIP3 level and its colocalization with αSyn. Taken together, PIP3 dysregulation promotes the pathological aggregation of αSyn and increases the risk of developing PD, and PIP3 represents a potent target for intervention in PD.

Published
2023

2. Trial of Antisense Oligonucleotide Tofersen for SOD1 ALS

Author

Miller, Timothy M, Cudkowicz, Merit E, Andrews, Jinsy A, Hesters, Adele, Kermorvant, Hugo, Lacomblez, Lucette, Forestier, Nadine Le, Lenglet, Thimotée, Retail, Maryvonne, Ruiz Del Mar Amador, Maria, Salachas, François, Shotar, Eimad, Sourour, Nader, Babu, Suma, Dorst, Johannes, Froehlich, Elke, Fromm, Andrea, Kandler, Katharina, Langer, Eva, Leichtle, Sarah, Ludolph, Albert, Mayer, Kristina, Michels, Sebastian, Raubold, Sabine, Benatar, Michael, Schuster, Joachim, Weiland, Ulrike, Wiesenfarth, Maximilian, Witzel, Simon, Calvo, Andrea, Canosa, Antonio, Casale, Federico, Chiò, Adriano, Fuda, Giuseppe, Grassano, Maurizio, McDermott, Christopher J, Marchese, Giulia, Moglia, Cristina, Palumbo, Francesca, Salamone, Paolina, Ajiki, Takahiro, Akasaka, Aya, Ando, Masahiro, Arata, Hitoshi, Asuka, Kitamura, Baba, Kosuke, Cochrane, Thos, Bekku, Goichi, Chiba, Tomoya, Date, Yugaku, Eriko, Takeuchi, Hashiguchi, Akihiro, Hatatori, Ritsuko, Hayano, Eri, Hayashi, Yuto, Higashi, Keiko, Higuchi, Eriko, Chary, Sowmya, Hiramatsu, Yu, Horikawa, Rui, Ikenaka, Kensuke, Ishiura, Hiroyuki, Ito, Daisuke, Kawai, Sachiko, Kikuchi, Junko, Kuzuyama, Haruko, Li, Xuehong, Matsumoto, Chika, Chew, Sheena, Matsuura, Eiji, Michizono, Kumiko, Mitsui, Jun, Mitsutake, Akihiko, Mochizuki, Hideki, Nagamatsu, Akemi, Nagano, Seiichi, Nakamura, Tomonori, Naruse, Hiroya, Ogasawara, Asuka, Zhu, Han, Okada, Kensuke, Okamoto, Yuji, Okuno, Tatsusada, Oyama, Satoshi, Ozono, Tatsuhiko, Sakiyama, Yusuke, Sakuishi, Kaori, Seki, Morinobu, Shibata, Shota, Shimizu, Mikito, Wu, Fan, Takahata, Katsunori, Takahito, Yoshizaki, Takashima, Hiroshi, Takeichi, Hiroko, Tashiro, Yuichi, Toda, Tatsushi, Tomizu, Yuki, Tomoya, Wadayama, Ujiakira, Nishiike, Yashita, Daiki, Nestorov, Ivan, Al-Chalabi, Ammar, Alix, James, Bangalore, Priyadarshini, Blackburn, Daniel, Chiwera, Theresa, Clegg, Rosie, Collins, Alexis, Cooper-Knock, Jonathan, Emery, Anna, Franklin, John, Genge, Angela, Graham, Danielle, Green, Louisa, Harvey, Callum, Hobson, Esther, Islam, Mahjabim, Jenkins, Thomas Michael, Kazoka, Mbombe, Kelly, Gillian, Korley, Mercy, Madarshahaian, Daniel, Mayl, Keith, Sun, Peng, McDermott, Christopher John, Radford, Alex, Shaw, Christopher, Shaw, Pamela J, Sidebottom, Joe, Smart, Lynne, Sreedharan, Jemeen, Stone, Ben, Tsironis, Theocharis, Tuddenham, Lee, McNeill, Manjit, Verber, Nick, Wollff, Helen, Young, Stacy, Zis, Panagiotis, Adamo, Ashley, Ahmed, Arubah, Ajroud-Driss, Senda, Alameda, Gustave, Arcila-Londono, Ximena, Fanning, Laura, Baird, Candy, Bazan, Tracy, Berry, James, Bordeau, Jane, Bradford, Wendy, Brook, Nyda, Brown, Lauren, Bucelli, Robert C, Ferguson, Toby A, Buckner, Katherine, Budler, Michael W, Burba, Lindita, Burke, Katherine, Calhoun, Ashley D, Campbell, Sarah, Carey, Judith, Caristo, Irys B, Carty, Simon, Chan, Emmanuel, Fradette, Stephanie, Chaudhry, Vinay, Chen, Ricky, Chow, Saephanh, Clawson, Lora L, Clemens, Mitchell, Cloninger, Suzann E, Coleman-Wood, Krista, Cooper, Thomas N, Cummings, Arlena, Daniels, Jacquelyn, VALOR, DeSaro, Pamela, DeWitt, Michelle, Dedi, Brixhilda, Dempsey, Debbie, Denny, Carol, Doherty, Jenna, Doherty, Leana, Donahue, Megan, Doyle, Michael, Duncan, Jessie, Group, OLE Working, Elman, Lauren, Eloge, Christine M, Echiti, Desirae R, Ferrey, Dominic, Fournier, Christina, Fukumura, Yuriko, Gallagher, Katherine, Garaycoa, Jessica, Garrett, Mark, Gibson, Richard L, Beullens, Lien, Gifford, Ryan, Glass, Jonathan D, Gogol, Danuta, Golden, Shea, Gonzalez, Alexa, Goodman, Ira, Goolsby, Christopher, Goslin, Kimberly, Goulbourne, Michael, Granit, Volkan, Claeys, Kristl, Grignon, Anne-Laure, GuhaRay, Adreeja, Guide, Debra, Gundogdu, Melek Betul, Gutierrez, Gil, Hastings, Debbie, Hayzen, Colleen, Herzog, Hilary, Holloway, Raegan, Jacobs, Gabriel, Claeys, Thomas, Jacobsen, Bill, James, Virginia, Jenkins, Liberty, Jockel-Balsarotti, Jennifer, Johnson, Linda Carol, Jose, Sunil, Joslin, Benjamin, Karanja, Elizabeth, Katz, Jonathan, Keener, Anthony, Couwelier, Goedele, Kittle, Gale, Klein, Sara, Kreple, Collin, Rebecca, Rebecca, Kuenzler, Kuenzler, Kusnir, Jorge, Labbe, Kristen, Lachica-Encinas, Nicolet, Ladha, Shafeeq, Leimer, Lesli, D'Hondt, Ann, Levy, Michael, Levy, Wendy, Li, Yingji, Likanje, Marie-France, Livigni, Rebecca, Locatelli, Eduardo, Luppino, Sarah, Malcolm, Amber, Maragakis, Nicholas, Marin, Horia, Debien, Elisa, Markowitz, Clyde, Markway, Jesse, McCaffrey, Alexandra, McCoy, Arita, McCoy Gross, Kelly, Mehta, Kush, Meyer, Robert, Milan, Jennifer, Miller, Timothy, Miller, Robert G, de Keersmaecker, Sebastiaan, Morales, Francisco, Mosmiller, Elizabeth, Mott, Donovan, Moulton, Kelsey, Murphy, Christine A, Negron, Tirso, Nelson, Cassandra, Newman, Daniel S, Nissinen, Janne Kristoffer, Norman, Andrew, Della Faille, Laetitia, Ohkubo, Takuya, Olney, Nicholas, Ortiz, Natasha, Oskarsson, Bjorn, Pace, Mitchell, Packard, Kathleen, Padgett, Denny, Paganoni, Sabrina, Paredes, Maria E, Parker, Elizabeth, Delmotte, Koen, Partlow, Ann, Pattee, Gary L, Paulett, Jany, Pelot, Antoinette, Pfeifer, Kyle M, Pijanowski, Olivia, Pioro, Erik, Polak, Meraida, Prakash, Ahalya, Previte, Rosemarie, Depoortere, Sofie, Pukenas, Bryan, Quinn, Colin, Ravits, John, Razavi, Ryan, Regan, Tyler, Riley, Kristen M, Roth, Heather, Sanders, Danica, Scalia, Jennifer, Schmidt, Emma, de Velder, Laura, Schwen, Edward, Shah, Jaimin, Shah, Stuti, Shefner, Jeremy, Sheldon, Danielle, Simmons, Karon, Singh, Navneet K, Singleton, Jessica, Smiley, Richard, Smith, William B, Dobbels, Laurens, Smith, Sean, Sotirchos, Elias, Sorenson, Eric, Staff, Nathan, Steele, Julie, Steijlen, Kara, Stirrat, Taylor, Stoica, George S, Strong, Stephanie, Sufit, Robert, Sobue, Gen, Gijs, Jeroen, Sultze, Jane, Swartz, Amy, Szymanski, April, Tay, Anna, Thakore, Nimish, Thiessen, Diana, Thotala, Sukrutha, Trudell, Randall G, Turcotte, Nicole, Turner, Michelle, Horckmans, Simon, Uchil, Alpa, Upadhyay, Vihar, Usman, Uzma, Vallis, Anne, Vaporean-Bussey, Danielle, Vladimirova, Valentine, Weber, Harli, Winbigler, Jennifer, Wojanowski, Heather, Wulf, Charlie, Lamaire, Nikita, Yasek, Julia, Yoo, Stephanie, Zivalic, Hannah, Cole, Alexandra, File, Greta, Foate, Jeremy, Mason, Deborah, Newton, Susan, Roberts, Stephen, Sellwood, Cory Dean, Liessens, Hannelore, Swan, James, Werno, Anja, Zhong, Cathy, Masrori, Pegah, Nysten, Celine, Schotte, Caroline, Serrien, Anouk, Swinnen, Bart, Tilkin, Petra, van Daele, Sien, Van Damme, Philip, Vynckier, Jan, Wouters, Anke, Abrahao, Agessandro, Angle, Mark, Badawy, Mohamed, Berube, Maxime, Bertone, Vanessa, Cooper, Sarah Marie, Dobrowolski, Peter, Fong, Helen, Hannouche, Matthew, Hartley, Denise, Hogan, Michael, Johnston, Wendy, Khalfallah, Yousra, Korngut, Lawrence, Kroetsch, Gina, Letourneau, Justin, Magnussen, Claire, Martinez, Jose, Massie, Rami, Mobach, Theodore, Mookshah, Jahan, Ozelsel, Timur, Parks, Andrea, Petrillo, Janet, Pfeffer, Gerald, Ludolph, Albert C, Pham, Shirley, Phung, Liane, Shiungsun, Rodney, Pi-Shan, Li, Santos, Denizart, Salmon, Kristiana, Saunders, Natalie, Sembinelli, Dylan, Tymkow, Kelsey, Wong, Berchman, Zinman, Lorne, Karlsborg, Merete, Pedersen Lomholt, Therese, Nilsson, Sigrid, Salvesen, Lisette, Skov, Pernille, Svenstrup, Kristen, Bruneteau, Gaelle, Calerencon, Frederic, and Guimaraes Costa, Raquel

Subjects
Adult, drug effects [Recovery of Function], Spinal, Oligonucleotides, blood [Neurofilament Proteins], administration & dosage [Oligonucleotides, Antisense], tofersen, Injections, blood [Amyotrophic Lateral Sclerosis], pharmacology [Oligonucleotides, Antisense], Superoxide Dismutase-1, Double-Blind Method, Neurofilament Proteins, Humans, ddc:610, Antisense, Injections, Spinal, Biomarkers, Recovery of Function, Amyotrophic Lateral Sclerosis, Oligonucleotides, Antisense, blood [Biomarkers], drug therapy [Amyotrophic Lateral Sclerosis], therapeutic use [Oligonucleotides, Antisense], SOD1 protein, human, General Medicine, genetics [Superoxide Dismutase-1], genetics [Amyotrophic Lateral Sclerosis], cerebrospinal fluid [Biomarkers], cerebrospinal fluid [Superoxide Dismutase-1], cerebrospinal fluid [Amyotrophic Lateral Sclerosis]
Abstract

The intrathecally administered antisense oligonucleotide tofersen reduces synthesis of the superoxide dismutase 1 (SOD1) protein and is being studied in patients with amyotrophic lateral sclerosis (ALS) associated with mutations in SOD1 (SOD1 ALS).In this phase 3 trial, we randomly assigned adults with SOD1 ALS in a 2:1 ratio to receive eight doses of tofersen (100 mg) or placebo over a period of 24 weeks. The primary end point was the change from baseline to week 28 in the total score on the ALS Functional Rating Scale-Revised (ALSFRS-R; range, 0 to 48, with higher scores indicating better function) among participants predicted to have faster-progressing disease. Secondary end points included changes in the total concentration of SOD1 protein in cerebrospinal fluid (CSF), in the concentration of neurofilament light chains in plasma, in slow vital capacity, and in handheld dynamometry in 16 muscles. A combined analysis of the randomized component of the trial and its open-label extension at 52 weeks compared the results in participants who started tofersen at trial entry (early-start cohort) with those in participants who switched from placebo to the drug at week 28 (delayed-start cohort).A total of 72 participants received tofersen (39 predicted to have faster progression), and 36 received placebo (21 predicted to have faster progression). Tofersen led to greater reductions in concentrations of SOD1 in CSF and of neurofilament light chains in plasma than placebo. In the faster-progression subgroup (primary analysis), the change to week 28 in the ALSFRS-R score was -6.98 with tofersen and -8.14 with placebo (difference, 1.2 points; 95% confidence interval [CI], -3.2 to 5.5; P = 0.97). Results for secondary clinical end points did not differ significantly between the two groups. A total of 95 participants (88%) entered the open-label extension. At 52 weeks, the change in the ALSFRS-R score was -6.0 in the early-start cohort and -9.5 in the delayed-start cohort (difference, 3.5 points; 95% CI, 0.4 to 6.7); non-multiplicity-adjusted differences favoring early-start tofersen were seen for other end points. Lumbar puncture-related adverse events were common. Neurologic serious adverse events occurred in 7% of tofersen recipients.In persons with SOD1 ALS, tofersen reduced concentrations of SOD1 in CSF and of neurofilament light chains in plasma over 28 weeks but did not improve clinical end points and was associated with adverse events. The potential effects of earlier as compared with delayed initiation of tofersen are being further evaluated in the extension phase. (Funded by Biogen; VALOR and OLE ClinicalTrials.gov numbers, NCT02623699 and NCT03070119; EudraCT numbers, 2015-004098-33 and 2016-003225-41.).

Published
2022

3. Erdheim-Chester Disease Involving the Central Nervous System with Latent Toxoplasmosis

Author

Tomoya Wadayama, Mikito Shimizu, Ikko Kimura, Kousuke Baba, Goichi Beck, Seiichi Nagano, Ryo Morita, Hidenori Nakagawa, Michinori Shirano, Tetsushi Goto, Kazumi Norose, Kenji Hikosaka, Shigeo Murayama, and Hideki Mochizuki

Subjects
Central Nervous System, Male, Erdheim-Chester Disease, Histiocytosis, Non-Langerhans-Cell, Internal Medicine, Humans, General Medicine, Middle Aged, Toxoplasmosis
Abstract

Erdheim-Chester disease (ECD) is a rare, non-Langerhans cell histiocytosis characterized by the infiltration of foamy histiocytes into multiple organs. We herein report a case of ECD with central nervous system (CNS) involvement in a 63-year-old man who also presented a positive result for Toxoplasma gondii nested polymerase chain reaction testing of cerebrospinal fluid. Since anti-Toxoplasma treatment proved completely ineffective, we presumed latent infection of the CNS with T. gondii. This case suggests the difficulty of distinguishing ECD with CNS involvement from toxoplasmic encephalitis and the possibility of a relationship between the pathogeneses of ECD and infection with T. gondii.

Published
2022

4. [Difficulties in distinguishing abnormal intensities associated with convulsion from tumor on MRI: a case report]

Author

Masashi Morikawa, Kyoko Otani, Tomoya Wadayama, Naoko Ueda, Ryoichi Otsubo, and Aya Ito

Subjects
Male, medicine.medical_specialty, Clonic Convulsion, Oligodendroglioma, Brain tumor, Status epilepticus, Neurosurgical Procedures, Diagnosis, Differential, Status Epilepticus, Fosphenytoin, Recurrence, Seizures, Convulsion, medicine, Humans, medicine.diagnostic_test, business.industry, Brain Neoplasms, Magnetic resonance imaging, Middle Aged, medicine.disease, White Matter, Frontal Lobe, Diffusion Magnetic Resonance Imaging, Face, Arm, Epilepsy, Generalized, Neurology (clinical), Radiology, Levetiracetam, medicine.symptom, business, medicine.drug
Abstract

A 48-year-old man was admitted to our department with generalized convulsive seizures followed by recurrent partial clonic convulsions in the left face and arm. Convulsions stopped temporarily after administration of diazepam, fosphenytoin, and levetiracetam. However, frequent partial seizures occurred repeatedly and general anesthesia was required to control seizures. Diffusion-weighted and T2-weighted images revealed a high-intensity lesion in the right frontal lobe. A tumor-like area in the white matter showed high intensity on T2-weighted images with ring enhancement on gadolinium-enhanced T1-weighted images. An area of frontal cortex near the tumor was also enhanced. Brain surgery was performed for the purposes of diagnosis, seizure control and tumor resection. Histological findings demonstrated oligodendroglioma in the ring-enhancing area, but not in the frontal cortex. This fact indicated that contrast enhancement of the frontal cortex was caused by status epilepticus. It is important to recognize that status epilepticus could cause contrast enhancement on magnetic resonance imaging.

Published
2019

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