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Significance of a preoperative tumor marker gradient for predicting microvascular invasion in cases of hepatocellular carcinoma.

Koizumi S, Yamashita S, Matsumura S, Takeda K, Minagawa T, Kobayashi S, Hibi T, Shinoda M, Endo I, Tanabe M, Yamamoto M, Otsubo T.

Mol Clin Oncol. 2020 Mar;12(3):290-294. doi: 10.3892/mco.2020.1975. Epub 2020 Jan 10.


Acute and chronic hemorrhage from radiation-induced cavernous malformation associated with late-delayed radiation necrosis in long surviving glioma patients: A case report.

Oishi T, Yamasaki T, Baba S, Koizumi S, Sameshima T, Namba H.

Oncol Lett. 2020 Jan;19(1):513-518. doi: 10.3892/ol.2019.11113. Epub 2019 Nov 19.


Effects of Collagen Hydrolysates on Human Brain Structure and Cognitive Function: A Pilot Clinical Study.

Koizumi S, Inoue N, Sugihara F, Igase M.

Nutrients. 2019 Dec 23;12(1). pii: E50. doi: 10.3390/nu12010050.


Risks for Rebleeding and In-Hospital Mortality after Gastrointestinal Bleeding in a Tertiary Referral Center in Japan.

Fukuda S, Shimodaira Y, Watanabe K, Takahashi S, Sugawara K, Suzuki Y, Watanabe N, Koizumi S, Matsuhashi T, Iijima K.

Digestion. 2020;101(1):31-37. doi: 10.1159/000504088. Epub 2019 Nov 13.


Author Correction: Intermittent restraint stress induces circadian misalignment in the mouse bladder, leading to nocturia.

Ihara T, Nakamura Y, Mitsui T, Tsuchiya S, Kanda M, Kira S, Nakagomi H, Sawada N, Kamiyama M, Shigetomi E, Shinozaki Y, Yoshiyama M, Nakao A, Koizumi S, Takeda M.

Sci Rep. 2019 Nov 8;9(1):16731. doi: 10.1038/s41598-019-53132-2.


Recurrent Braiding of Thin McKibben Muscles to Overcome Their Limitation of Contraction.

Koizumi S, Kurumaya S, Nabae H, Endo G, Suzumori K.

Soft Robot. 2019 Nov 7. doi: 10.1089/soro.2019.0022. [Epub ahead of print]


Snake venom rhodocytin induces plasma extravasation via toxin-mediated interactions between platelets and mast cells.

Nakamura Y, Sasaki T, Mochizuki C, Ishimaru K, Koizumi S, Shinmori H, Suzuki-Inoue K, Nakao A.

Sci Rep. 2019 Nov 4;9(1):15958. doi: 10.1038/s41598-019-52449-2.


Aggressive Inflammatory Myofibroblastic Tumor without Anaplastic Lymphoma Kinase Gene Rearrangement in the Rectum with Liver Metastasis.

Shimodaira Y, Sugawara K, Fukuda S, Suzuki Y, Watanabe N, Koizumi S, Ohba R, Hiroshima Y, Matsuhashi T, Nanjo H, Iijima K.

Intern Med. 2020 Feb 15;59(4):495-499. doi: 10.2169/internalmedicine.3686-19. Epub 2019 Oct 7.


Transcriptional Regulation of Differentiation and Functions of Effector T Regulatory Cells.

Koizumi SI, Ishikawa H.

Cells. 2019 Aug 20;8(8). pii: E939. doi: 10.3390/cells8080939. Review.


Aortic root replacement in a patient with unoperated tricuspid atresia.

Koizumi S, Matsuo K, Kabasawa M.

Cardiol Young. 2019 Sep;29(9):1211-1213. doi: 10.1017/S1047951119001719. Epub 2019 Aug 6.


High-signal-intensity MR Image in the Hepatobiliary Phase Predicts Long-term Survival in Patients With Hepatocellular Carcinoma.

Ariizumi SI, Ban D, Abe Y, Kumamoto T, Koizumi S, Tanabe M, Shinoda M, Endo I, Otsubo T, Yamamoto M.

Anticancer Res. 2019 Aug;39(8):4219-4225. doi: 10.21873/anticanres.13583.


Successful hybrid management of a ruptured abdominal aortic aneurysm induced by type II and IIIB endoleaks after endovascular aortic repair.

Koizumi S, Hayashida N, Hasegawa H, Asano S.

J Vasc Surg Cases Innov Tech. 2019 Jun 29;5(3):323-326. doi: 10.1016/j.jvscit.2019.03.016. eCollection 2019 Sep.


Cosmetic and Neuroprotective Placement of Custom-Made Ultra-High-Molecular-Weight Polyethylene Cranial Plate (SKULPIO) in Single-Step Surgery: Technical Note and Case Report.

Oishi T, Sameshima T, Totsuka T, Yamasaki T, Koizumi S, Namba H.

World Neurosurg. 2019 Oct;130:187-191. doi: 10.1016/j.wneu.2019.07.026. Epub 2019 Jul 9.


Intermittent restraint stress induces circadian misalignment in the mouse bladder, leading to nocturia.

Ihara T, Nakamura Y, Mitsui T, Tsuchiya S, Kanda M, Kira S, Nakagomi H, Sawada N, Kamiyama M, Shigetomi E, Shinozaki Y, Yoshiyama M, Nakao A, Koizumi S, Takeda M.

Sci Rep. 2019 Jul 11;9(1):10069. doi: 10.1038/s41598-019-46517-w. Erratum in: Sci Rep. 2019 Nov 8;9(1):16731.


Microglial ROCK is essential for chronic methylmercury-induced neurodegeneration.

Shinozaki Y, Danjo Y, Koizumi S.

J Neurochem. 2019 Oct;151(1):64-78. doi: 10.1111/jnc.14817. Epub 2019 Jul 28.


Evaluation of M1-microglial activation by neurotoxic metals using optimized organotypic cerebral slice cultures.

Hoshi T, Toyama T, Shinozaki Y, Koizumi S, Lee JY, Naganuma A, Hwang GW.

J Toxicol Sci. 2019;44(7):471-479. doi: 10.2131/jts.44.471.


Prone "computed tomography hernia study" for the diagnosis of inguinal hernia.

Kamei N, Otsubo T, Koizumi S, Morimoto T, Nakajima Y.

Surg Today. 2019 Nov;49(11):936-941. doi: 10.1007/s00595-019-01837-2. Epub 2019 Jun 26.


Fluid-Blood Level and Hematoma Expansion in a Cerebral Amyloid Angiopathy-Associated Intracerebral Hematoma.

Suzuki R, Yamasaki T, Koizumi S, Nozaki T, Hiramatsu H, Sameshima T, Sugiyama K, Namba H.

Am J Case Rep. 2019 Jun 15;20:844-850. doi: 10.12659/AJCR.915919.


Hyaluronan synthesis supports glutamate transporter activity.

Hayashi MK, Nishioka T, Shimizu H, Takahashi K, Kakegawa W, Mikami T, Hirayama Y, Koizumi S, Yoshida S, Yuzaki M, Tammi M, Sekino Y, Kaibuchi K, Shigemoto-Mogami Y, Yasui M, Sato K.

J Neurochem. 2019 Aug;150(3):249-263. doi: 10.1111/jnc.14791. Epub 2019 Jul 9.


Is the new potent acid-inhibitory drug vonoprazan effective for healing idiopathic peptic ulcers? A multicenter observational study in Akita Prefecture, Japan.

Sugawara K, Koizumi S, Horikawa Y, Mimori N, Tsuji T, Ishii H, Fujimori S, Onochi K, Watanabe H, Iijima K.

J Gastroenterol. 2019 Nov;54(11):963-971. doi: 10.1007/s00535-019-01587-5. Epub 2019 Apr 29.


Thermo-Responsive Nanocomposite Hydrogels Based on PEG-b-PLGA Diblock Copolymer and Laponite.

Maeda T, Kitagawa M, Hotta A, Koizumi S.

Polymers (Basel). 2019 Feb 2;11(2). pii: E250. doi: 10.3390/polym11020250.


A Case of Thoracic Endovascular Aortic Repair Using Carotid Access with Axillary-Carotid Bypass for Descending Aortic Aneurysm in a Patient with Aortoiliac Occlusive Disease.

Asano S, Hayashida N, Shibata Y, Koizumi S, Ito T, Ikeuchi H, Hasegawa H, Abe S, Kabasawa M, Hirose N, Ohba M, Hirano M, Matsuo K, Murayama H.

Ann Vasc Dis. 2019 Mar 25;12(1):105-108. doi: 10.3400/


Mechanical and frictional properties of aesthetic orthodontic wires obtained by hard chrome carbide plating.

Usui T, Iwata T, Miyake S, Otsuka T, Koizumi S, Shirakawa N, Kawata T.

J Dent Sci. 2018 Jun;13(2):151-159. doi: 10.1016/j.jds.2017.07.003. Epub 2017 Nov 15.


The locally columnar model for clay/polymer systems: Connections to scattering experiments.

Frielinghaus H, Koch K, Antonio VP, Noda Y, Koizumi S.

J Colloid Interface Sci. 2019 May 15;544:172-177. doi: 10.1016/j.jcis.2019.02.091. Epub 2019 Feb 28.


Clinical characteristics of autoimmune pancreatitis with IgG4 related kidney disease.

Kuruma S, Kamisawa T, Kikuyama M, Chiba K, Shimizuguchi R, Koizumi S, Tabata T.

Adv Med Sci. 2019 Sep;64(2):246-251. doi: 10.1016/j.advms.2018.12.005. Epub 2019 Feb 28.


Aberrant Calcium Signals in Reactive Astrocytes: A Key Process in Neurological Disorders.

Shigetomi E, Saito K, Sano F, Koizumi S.

Int J Mol Sci. 2019 Feb 25;20(4). pii: E996. doi: 10.3390/ijms20040996. Review.


Size-tunable MRI-visible nitroxide-based magnetic mixed micelles: preparation, stability, and theranostic application.

Nagura K, Bogdanov A, Chumakova N, Vorobiev AK, Moronaga S, Imai H, Matsuda T, Noda Y, Maeda T, Koizumi S, Sakamoto K, Amano T, Yoshino F, Kato T, Komatsu N, Tamura R.

Nanotechnology. 2019 May 31;30(22):224002. doi: 10.1088/1361-6528/ab0627. Epub 2019 Feb 11.


Therapeutic Effectiveness of Immunoradiotherapy on Brain-metastatic BRAF/MEK Inhibitor-resistant Melanoma with Balloon Cell Change.

Goto H, Shimauchi T, Fukuchi K, Yokota N, Koizumi S, Aoshima M, Endo Y, Masuda Y, Miyazawa H, Kasuya A, Nakamura K, Ito T, Tokura Y.

Acta Derm Venereol. 2019 May 1;99(6):612-613. doi: 10.2340/00015555-3134. No abstract available.


Necklace-like microstructure in shallow-quenched aqueous solutions of poly(n-isopropylacrylamide), detected by advanced small-angle neutron scattering methods.

Koizumi S, Annaka M, Schwahn D.

Soft Matter. 2019 Jan 28;15(4):671-682. doi: 10.1039/c8sm02416b. Epub 2019 Jan 9.


JunB regulates homeostasis and suppressive functions of effector regulatory T cells.

Koizumi SI, Sasaki D, Hsieh TH, Taira N, Arakaki N, Yamasaki S, Wang K, Sarkar S, Shirahata H, Miyagi M, Ishikawa H.

Nat Commun. 2018 Dec 17;9(1):5344. doi: 10.1038/s41467-018-07735-4.


[Epileptogenesis mediated by glial cells].

Koizumi S, Sano F.

Nihon Yakurigaku Zasshi. 2018;152(6):268-274. doi: 10.1254/fpj.152.268. Japanese.


Vasoactive intestinal peptide increases apoptosis of hepatocellular carcinoma by inhibiting the cAMP/Bcl-xL pathway.

Hara M, Takeba Y, Iiri T, Ohta Y, Ootaki M, Watanabe M, Watanabe D, Koizumi S, Otsubo T, Matsumoto N.

Cancer Sci. 2019 Jan;110(1):235-244. doi: 10.1111/cas.13861. Epub 2018 Dec 4.


Microglia mediate non-cell-autonomous cell death of retinal ganglion cells.

Takeda A, Shinozaki Y, Kashiwagi K, Ohno N, Eto K, Wake H, Nabekura J, Koizumi S.

Glia. 2018 Nov;66(11):2366-2384. doi: 10.1002/glia.23475. Epub 2018 Oct 29.


Chronological Changes in the Gastric Cancer Subsite in Akita, Japan: The Trends from the Data of a Hospital-Based Registration System.

Koizumi S, Motoyama S, Watanabe N, Matsuhashi T, Iijima K.

Tohoku J Exp Med. 2018 Oct;246(2):131-140. doi: 10.1620/tjem.246.131.


Involvement of VNUT-exocytosis in transient receptor potential vanilloid 4-dependent ATP release from gastrointestinal epithelium.

Mihara H, Uchida K, Koizumi S, Moriyama Y.

PLoS One. 2018 Oct 26;13(10):e0206276. doi: 10.1371/journal.pone.0206276. eCollection 2018.


Neuroprotective effects of microglial P2Y1 receptors against ischemic neuronal injury.

Fukumoto Y, Tanaka KF, Parajuli B, Shibata K, Yoshioka H, Kanemaru K, Gachet C, Ikenaka K, Koizumi S, Kinouchi H.

J Cereb Blood Flow Metab. 2019 Nov;39(11):2144-2156. doi: 10.1177/0271678X18805317. Epub 2018 Oct 18.


Transcriptional regulation of the 26S proteasome by Nrf1.

Koizumi S, Hamazaki J, Murata S.

Proc Jpn Acad Ser B Phys Biol Sci. 2018;94(8):325-336. doi: 10.2183/pjab.94.021. Review.


Reverse relationships of water uptake and alkaline durability with hydrophilicity of imidazolium-based grafted anion-exchange membranes.

Yoshimura K, Zhao Y, Hiroki A, Kishiyama Y, Shishitani H, Yamaguchi S, Tanaka H, Koizumi S, Houston JE, Radulescu A, Appavou MS, Richter D, Maekawa Y.

Soft Matter. 2018 Nov 21;14(45):9118-9131. doi: 10.1039/c8sm01650j.


Real-World Variability in the Prediction of Intracranial Aneurysm Wall Shear Stress: The 2015 International Aneurysm CFD Challenge.

Valen-Sendstad K, Bergersen AW, Shimogonya Y, Goubergrits L, Bruening J, Pallares J, Cito S, Piskin S, Pekkan K, Geers AJ, Larrabide I, Rapaka S, Mihalef V, Fu W, Qiao A, Jain K, Roller S, Mardal KA, Kamakoti R, Spirka T, Ashton N, Revell A, Aristokleous N, Houston JG, Tsuji M, Ishida F, Menon PG, Browne LD, Broderick S, Shojima M, Koizumi S, Barbour M, Aliseda A, Morales HG, Lefèvre T, Hodis S, Al-Smadi YM, Tran JS, Marsden AL, Vaippummadhom S, Einstein GA, Brown AG, Debus K, Niizuma K, Rashad S, Sugiyama SI, Owais Khan M, Updegrove AR, Shadden SC, Cornelissen BMW, Majoie CBLM, Berg P, Saalfield S, Kono K, Steinman DA.

Cardiovasc Eng Technol. 2018 Dec;9(4):544-564. doi: 10.1007/s13239-018-00374-2. Epub 2018 Sep 10.


Onset to Reperfusion Time Was Not Important in Mechanical Thrombectomy for Elderly Patients: A Retrospective Multicenter Study in Tama Area, Tokyo.

Koizumi S, Ota T, Shigeta K, Amano T, Ueda M, Matsumaru Y, Shiokawa Y, Hirano T.

Cerebrovasc Dis. 2018;46(1-2):89-96. doi: 10.1159/000492867. Epub 2018 Sep 6.


The time-dependent variation of ATP release in mouse primary-cultured urothelial cells is regulated by the clock gene.

Ihara T, Mitsui T, Nakamura Y, Kanda M, Tsuchiya S, Kira S, Nakagomi H, Sawada N, Kamiyama M, Shigetomi E, Shinozaki Y, Yoshiyama M, Nakao A, Takeda M, Koizumi S.

Neurourol Urodyn. 2018 Nov;37(8):2535-2543. doi: 10.1002/nau.23793. Epub 2018 Aug 14.


Deep Brain Stimulation for Intractable Obsessive-compulsive Disorder: The International and Japanese Situation/Scenario.

Sugiyama K, Nozaki T, Asakawa T, Sameshima T, Koizumi S, Hiramatsu H, Namba H.

Neurol Med Chir (Tokyo). 2018 Sep 15;58(9):369-376. doi: 10.2176/ Epub 2018 Aug 9.


Anaplastic changes of diffuse leptomeningeal glioneuronal tumor with polar spongioblastoma pattern.

Yamasaki T, Sakai N, Shinmura K, Kawaji H, Koizumi S, Samashima T, Namba H.

Brain Tumor Pathol. 2018 Oct;35(4):209-216. doi: 10.1007/s10014-018-0326-z. Epub 2018 Jul 26.


Esophagogastric varices were diagnosed in a non-cirrhotic liver case during long-term follow-up after oxaliplatin-based chemotherapy.

Shigefuku R, Watanabe T, Mizukami T, Matsunaga K, Hattori N, Ehira T, Suzuki T, Nakano H, Sato Y, Matsuo Y, Nakahara K, Ikeda H, Matsumoto N, Tsuda T, Katayama M, Koizumi S, Okuse C, Suzuki M, Otsubo T, Nakajima TE, Yasuda H, Itoh F.

Clin J Gastroenterol. 2018 Dec;11(6):487-492. doi: 10.1007/s12328-018-0873-1. Epub 2018 Jun 11.


Left ventricular assist device implantation after plasma exchange for heparin-induced thrombocytopenia.

Koizumi S, Kohno H, Watanabe M, Iwahana T, Maeda T, Miyata S, Kobayashi Y, Matsumiya G.

J Artif Organs. 2018 Dec;21(4):462-465. doi: 10.1007/s10047-018-1055-0. Epub 2018 Jun 25.


Anti-Depressant Fluoxetine Reveals its Therapeutic Effect Via Astrocytes.

Kinoshita M, Hirayama Y, Fujishita K, Shibata K, Shinozaki Y, Shigetomi E, Takeda A, Le HPN, Hayashi H, Hiasa M, Moriyama Y, Ikenaka K, Tanaka KF, Koizumi S.

EBioMedicine. 2018 Jun;32:72-83. doi: 10.1016/j.ebiom.2018.05.036. Epub 2018 Jun 8.


Comparison of the Long-term Efficacy and Safety of Gamma Knife Radiosurgery for Arteriovenous Malformations in Pediatric and Adult Patients.

Hasegawa H, Hanakita S, Shin M, Kawashima M, Takahashi W, Ishikawa O, Koizumi S, Nakatomi H, Saito N.

Neurol Med Chir (Tokyo). 2018 Jun 15;58(6):231-239. doi: 10.2176/ Epub 2018 May 17.


Hypothyroidism in patients with autoimmune pancreatitis.

Shimizuguchi R, Kamisawa T, Endo Y, Kikuyama M, Kuruma S, Chiba K, Tabata T, Koizumi S.

World J Gastrointest Pharmacol Ther. 2018 May 6;9(2):16-21. doi: 10.4292/wjgpt.v9.i2.16.


[A Case in Which S-1 plus CDDP and S-1 Therapy Responded to Liver Metastasis Recurrence after Gastric Cancer Operation].

Enomoto T, Mikami S, Kitajima M, Hiwatari M, Ono T, Sasaki N, Saji O, Matsushita T, Kobayashi S, Koizumi S, Ariizumi Y, Nakajima T, Otsubo T.

Gan To Kagaku Ryoho. 2018 Apr;45(4):658-660. Japanese.


The oscillation of intracellular Ca2+ influx associated with the circadian expression of Piezo1 and TRPV4 in the bladder urothelium.

Ihara T, Mitsui T, Nakamura Y, Kanda M, Tsuchiya S, Kira S, Nakagomi H, Sawada N, Kamiyama M, Hirayama Y, Shigetomi E, Shinozaki Y, Yoshiyama M, Nakao A, Takeda M, Koizumi S.

Sci Rep. 2018 Apr 9;8(1):5699. doi: 10.1038/s41598-018-23115-w.

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