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4 results on '"Shunsuke Ichi"'

1. Modified extradural selective anterior clinoidectomy leaving the optic canal unopened for internal carotid aneurysms: A technical note

Author

Toshikazu Kimura, Yasuhiro Takeda, and Shunsuke Ichi

Subjects
Anterior clinoidectomy, Internal carotid artery aneurysm, Optic canal, Anterior clinoid process, Surgery, RD1-811, Neurology. Diseases of the nervous system, RC346-429
Abstract

Background: Anterior clinoidectomy is an established procedure used to decompress the optic nerve, mobilize the internal carotid artery (ICA), or enlarge the retrocarotid space. However, its use carries the risk of optic nerve injury. In certain surgeries, such as those for internal carotid aneurysms, propose modification to the anterior clinoidectomy for enlarging the retrocarotid space, especially in operations for ICA aneurysms. Methods: After the anterior clinoid process (ACP) is sufficiently exposed, the internal cancellous bone or pneumatization can be removed through a small window created at its lateral edge to reveal the compact bone of the optic canal. Since the compact bone of the inferior surface facing the ICA is absent or very thin, the ACP can be removed by drilling through the anchoring compact bone with the optic canal in direct sight. Results: In 10 consecutive internal carotid aneurysm cases, the ACP was successfully removed without opening of the optic canal to enlarge the retrocarotid space. Conclusions: Anterior clinoidectomy can be performed to enlarge the retrocarotid space without opening the optic canal from outside the dura.

Published
2023
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2. Contributors

Author

Aamir Ahmad, Mir Farshid Alemdehy, Tyler Anderson, Hamdy Awad, Asha Balakrishnan, Mumtaz Yaseen Balkhi, Laure Bally-Cuif, Jaideep Banerjee, Bin Bao, Christopher Taylor Barry, Christophe Beclin, Detlev Boison, Andreas Bosio, Maria Luisa Brandi, Melissa Brown, George A. Calin, Yang Cao, Maurizio C. Capogrossi, Andrea Caporali, Christian Carulli, Yuk Cheung Chan, Pavithra L. Chavali, Sreenivas Chavali, Alex F. Chen, Xiaona Chen, Charles Cook, Marion Coolen, Harold Cremer, Catherine Czeisler, Duaa Dakhlallah, Amitava Das, Anne M. Delany, Dasa Dolezalova, Juan Domínguez-Bendala, Costanza Emanueli, Stefan J. Erkeland, Michael Ezzie, Pasquale Fasanaro, Ariana Foinquinos, Tiziana Franceschetti, Roberto Gambari, Shazia Ahmad, Subhadip Ghatak, Le Luo Guan, Denis C. Guttridge, Patrick Edwin Gygli, Khawaja H. Haider, Aleš Hampl, Martin C. Harmsen, Yoshinori Hasegawa, Robert Hindges, Myron Hinsdale, John D. Houlé, Lynsey Howard, Derryn Xin Hui Chan, Shunsuke Ichi, Massimo Innocenti, Jared Jagdeo, Dominique A. Kagele, Mahmood Khan, Dagmar Klein, Tatsuya Kobayashi, Dejuan Kong, Guido Krenning, Yiwei Li, Kenneth W. Liechty, Thomas Lisse, Lin Liu, Pamela Lloyd, Leina Lu, Theresa A. Lusardi, Ettore Luzi, Armando Macera, Alessandra Magenta, Nicola Antonio Maiorano, Obaid Malik, Andrew Mamalis, Barbara Mania-Farnell, Clay B. Marsh, C. Shekhar Mayanil, David McLone, Selina Möbus, Peter J. Mohler, Leni Moldovan, Paloma del C. Monroig, Marek Mraz, S. Patrick Nana-Sinkam, Laurent Nguyen, Ryan M. O’Connell, José Javier Otero, Durba Pal, Garyfallia Papaioannou, Ricardo L. Pastori, Melissa G. Piper, Sophie Pirotte, Giulio Pompilio, Srinivas Ramsamy, Josue Moura Romao, Alessandra Rossini, Sashwati Roy, Prabha Sampath, Fazlul H. Sarkar, Mitsuo Sato, Chandan K. Sen, David S. Shames, Saran Shantikumar, Amar Deep Sharma, M. Rizwan Siddiqui, Mithun Sinha, Hao Sun, Yeqing Sun, Hidetoshi Tahara, Thomas Thum, Esmerina Tili, Tadanori Tomita, Joanne Trgovich, Janika Viereck, Marie-Laure Volvert, Jie-Mei Wang, Lijun Wang, Huating Wang, Yijie Wang, Dan Xu, Junwang Xu, Dakai Yang, Marina E. Zambrotta, Carlos Zgheib, Yu Zhao, and Liang Zhou

Published
2015

3. MicroRNAs in Neural Crest Development

Author

M. Rizwan Siddiqui, Tadanori Tomita, Shunsuke Ichi, C. Shekhar Mayanil, Barbara Mania-Farnell, and David G. McLone

Subjects
Genetics, education.field_of_study, Population, Neural tube, Neural crest, Ectoderm, Biology, Non-coding RNA, Cell biology, Chromatin, medicine.anatomical_structure, medicine, Epigenetics, education, Gene
Abstract

The neural crest (NC) is a population of cells between the dorsal ectoderm and the neural tube in vertebrate embryos. Regulatory mechanisms ranging from epigenetics to microRNAs (miRNAs) to post-translational protein modifications, work coordinately to fine-tune NC activity. miRNAs affect genes transcriptionally by directly interacting with either their 3′UTR or their 5′UTR. Affected genes include those of chromatin-modifying enzymes such as EZH2 and KDM6B. A lack of optimal levels of chromatin-modifying enzymes may in turn affect miRNA biogenesis as well as the transcriptional regulation of other genes. Overall, noncoding RNA genes and protein-coding genes interact in a network that, when connected to chromatin regulation, affects the expression of both noncoding and coding genes in neural crest development. This chapter highlights that role.

Published
2015

4. Maternal Intake of Folic Acid and Neural Crest Stem Cells

Author

Tadanori Tomita, Barbara Mania Farnell, Chandra S K Mayanil, Shunsuke Ichi, David G. McLone, and Vanda Boshnjaku

Subjects
medicine.medical_specialty, Maternal Nutritional Physiological Phenomena, Cellular differentiation, Neurogenesis, Neural tube, Neural crest, Disease, Biology, medicine.disease, Bioinformatics, medicine.anatomical_structure, Endocrinology, Internal medicine, medicine, Dementia, Stem cell
Abstract

Maternal folic acid (FA) intake has beneficial effects in preventing neural tube defects and may also play a role in the prevention of adult onset diseases such as Alzheimer's disease, dementia, neuropsychiatric disorders, cardiovascular diseases, and cerebral ischemia. This review will focus on the effects of maternal FA intake on neural crest stem cell proliferation and differentiation. Although FA is generally considered beneficial, it has the potential of promoting cell proliferation at the expense of differentiation. In some situations, this may lead to miscarriage or postnatal developmental abnormalities. Therefore, a blind approach such as "FA for everyone" is not necessarily the best course of action. Ultimately, the best approach for FA supplementation, and potentially other nutritional supplements, will include customized patient genomic profiles for determining dose and duration.

Published
2011

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