狩野　元宏 （カノ　モトヒロ）

Kano, Motohiro

写真a

所属（所属キャンパス）

医学部 外科学教室（小児） （信濃町）

職名

助教（有期）

HP

外部リンク
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研究分野 【 表示 ／ 非表示 】

  • ライフサイエンス / 外科学一般、小児外科学

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研究キーワード 【 表示 ／ 非表示 】

  • ミュラー管抑制因子

  • 腫瘍学

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  • Comparison of Postoperative Respiratory Function Between Patients After Thoracoscopic and Open Lobectomy

    Ishimaru T., Kanamori Y., Fujino A., Yoneda A., Fujiogi M., Yamamoto Y., Kano M., Koinuma G., Deie K., Kawashima H.

    Journal of Laparoendoscopic and Advanced Surgical Techniques 34 （ 4 ） 376 - 379 2024年04月

    ISSN  10926429

    　概要を見る

    Purpose: This study aimed to compare respiratory functions of patients after thoracoscopic lobectomy (TS) with those after thoracotomy (TR). Methods: This retrospective study was conducted in two centers, one of which adapted TS as a standard procedure in 2009 and the other performs it via TR. Data on patients who underwent lobectomy for congenital lung disease between 2009 and 2021 and underwent pulmonary function test (spirometry) were collected. Results: Ten patients underwent TS and 36 underwent TR. Distribution based on sex, prenatal diagnosis, pathological diagnosis, and resected lobe were similar between the two groups. The median [interquartile range] age at procedure in the TR group was significantly smaller than that in the TS group (13 [11-18] months versus 38 [13-79] months, P = .03). The procedure duration in the TR group was significantly shorter than that in the TS group (230 [171-264] minutes versus 264 [226-420] minutes, P = .02). Pulmonary function test was conducted at the age of eight in both groups, but the interval between the procedure, and the test was significantly shorter in the TS group (TR: 7 [5-8] years versus TS: 5 [2-7] years, P = .03). The ratio of forced vital capacity compared to predicted one (TR: 86.6 [76.6-95.3] versus TS: 88.7 [86.8-89.1], P = .58) and the ratio of forced expiratory volume in 1 second against that predicted (TR: 84.0 [80.5-88.7] versus TS: 88.7 [86.8-89.1], P = .08) were not significantly different between the two groups. Conclusions: Although TR was performed earlier than TS, respiratory function was similar between the two groups.

  • Long-Term Outcomes of Infantile Sacrococcygeal Teratoma: Results from a Multi-Institutional Retrospective Observational Study in Japan

    Fumino S., Hirohata Y., Takayama S., Tajiri T., Usui N., Taguchi T., Kano M., Tomita H., Sasaki T., Inoue M., Yamoto S., Hatata T., Nakagawa Y., Endo N., Touma M., Nakata M., Tamura R., Kawakubo N., Shinkai T., Yoshida M., Tanaka S., Kurobe M., Watanabe R., Fukuhara M., Tsuji Y., Kato Y., Arai Y.

    Journal of Pediatric Surgery 59 （ 4 ） 587 - 592 2024年04月

    ISSN  00223468

    　概要を見る

    Background: Tumor recurrence, anorectal and urinary dysfunction, and lower limb dysfunction after surgery are observed in infantile sacrococcygeal teratoma (SCT). In this paper, a multi-institutional retrospective observational study was conducted to clarify the long-term functional prognosis in Japan. Methods: This study was conducted using a paper-based questionnaire distributed to 192 facilities accredited by the Japanese Society of Pediatric Surgeons, covering patients who underwent radical surgery at less than 1 year old and who survived for at least 180 days after birth from 2000 to 2019. Results: A total of 355 patients were included in this analysis. Altman type was I-II in 248 and type III-IV in 107, and the median maximum tumor diameter was 6.1 (range: 0.6–36.0) cm. There were 269 mature teratomas, 69 immature teratomas, and 10 malignant tumors. Total resection was performed in 325, subtotal or partial resection in 27, and surgical complications were noted in 54. The median postoperative follow-up was 6.6 (0.5–21.7) years. Eighty-three patients (23.4 %) had functional sequelae, including 62 (17.5 %) with anorectal dysfunction, 56 (13.0 %) with urinary dysfunction, and 15 (4.2 %) with lower limb motor dysfunction. Recurrence occurred in 42 (11.8 %) at a median age of 16.8 (1.7–145.1) months old. Risk factors for dysfunction included preterm delivery, a large tumor diameter, Altman type III-IV, incomplete resection, and surgical complications. Risk factors for recurrence included immature teratoma or malignancy, incomplete resection, and surgical complications. Conclusions: Postoperative dysfunction was not low at 23.4 %, and 11.8 % of the patients experienced recurrence occurring more than 10 years after surgery, suggesting the need for periodic imaging and tumor markers evaluations in patients with risk factors. It is necessary to establish treatment guidelines for best practice monitoring of the long-term quality of life. Level of evidence: Level II Retrospective Study.

  • Durable contraception in the female domestic cat using viral-vectored delivery of a feline anti-Müllerian hormone transgene

    Vansandt L.M., Meinsohn M.C., Godin P., Nagykery N., Sicher N., Kano M., Kashiwagi A., Chauvin M., Saatcioglu H.D., Barnes J.L., Miller A.G., Thompson A.K., Bateman H.L., Donelan E.M., González R., Newsom J., Gao G., Donahoe P.K., Wang D., Swanson W.F., Pépin D.

    Nature Communications 14 （ 1 ）  2023年12月

    　概要を見る

    Eighty percent of the estimated 600 million domestic cats in the world are free-roaming. These cats typically experience suboptimal welfare and inflict high levels of predation on wildlife. Additionally, euthanasia of healthy animals in overpopulated shelters raises ethical considerations. While surgical sterilization is the mainstay of pet population control, there is a need for efficient, safe, and cost-effective permanent contraception alternatives. Herein, we report evidence that a single intramuscular treatment with an adeno-associated viral vector delivering an anti-Müllerian hormone transgene produces long-term contraception in the domestic cat. Treated females are followed for over two years, during which transgene expression, anti-transgene antibodies, and reproductive hormones are monitored. Mating behavior and reproductive success are measured during two mating studies. Here we show that ectopic expression of anti-Müllerian hormone does not impair sex steroids nor estrous cycling, but prevents breeding-induced ovulation, resulting in safe and durable contraception in the female domestic cat.

  • Evaluation of safety and efficacy of autologous oral mucosa-derived epithelial cell sheet transplantation for prevention of anastomotic restenosis in congenital esophageal atresia and congenital esophageal stenosis

    Fujino A., Fuchimoto Y., Mori T., Kano M., Yamada Y., Ohno M., Baba Y., Isogawa N., Arai K., Yoshioka T., Abe M., Kanai N., Takagi R., Maeda M., Umezawa A.

    Stem Cell Research and Therapy 14 （ 1 ）  2023年12月

    　概要を見る

    Background: We performed the first autologous oral mucosa-derived epithelial cell sheet transplantation therapy in a patient with refractory postoperative anastomotic stricture in congenital esophageal atresia (CEA) and confirmed its safety. In this study, patients with CEA and congenital esophageal stenosis were newly added as subjects to further evaluate the safety and efficacy of cell sheet transplantation therapy. Methods: Epithelial cell sheets were prepared from the oral mucosa of the subjects and transplanted into esophageal tears created by endoscopic balloon dilatation (EBD). The safety of the cell sheets was confirmed by quality control testing, and the safety of the transplantation treatment was confirmed by 48-week follow-up examinations. Results: Subject 1 had a stenosis resected because the frequency of EBD did not decrease after the second transplantation. Histopathological examination of the resected stenosis revealed marked thickening of the submucosal layer. Subjects 2 and 3 did not require EBD for 48 weeks after transplantation, during which time they were able to maintain a normal diet by mouth. Conclusions: Subjects 2 and 3 were free of EBD for a long period of time after transplantation, confirming that cell sheet transplantation therapy is clearly effective in some cases. In the future, it is necessary to study more cases; develop new technologies such as an objective index to evaluate the efficacy of cell sheet transplantation therapy and a device to achieve more accurate transplantation; identify cases in which the current therapy is effective; and find the optimal timing of transplantation; and clarify the mechanism by which the current therapy improves stenosis. Trial registration: UMIN, UMIN000034566, registered 19 October 2018, https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000039393.

  • Historical Cohort Study of Congenital Isolated Hypoganglionosis of the Intestine: Determining the Best Surgical Interventions

    Yamada Y., Mori T., Takahashi N., Fujimura T., Kano M., Kato M., Takahashi M., Shimojima N., Watanabe T., Yoshioka T., Kanamori Y., Kuroda T., Fujino A.

    Biomolecules 13 （ 10 ）  2023年10月

    　概要を見る

    No standard diagnostic method or surgical treatment for congenital isolated hypoganglionosis (CIHG) has been established. This study aimed to analyze the clinical outcomes of patients with CIHG and identify the best surgical interventions provided thus far. Data on surgical interventions in 19 patients were collected between 1992 and 2020, including the type of enterostomy, type of revision, and length of the intestines. Ganglion cells in the myenteric plexus were enumerated using Hu C/D staining. The ratio of the length of the small intestine to its height was defined as the intestinal ratio (IR). The outcomes were assessed using the stoma output, growth parameters including the body mass index (BMI), and parenteral nutrition (PN) dependency. All patients required a diverting enterostomy. The IR ranged from 0.51 to 1.75 after multiple non-transplant surgeries. The stoma types were tube-stoma, end-stoma, Santulli-type, and Bishop–Koop (BK)-type. Patients with Santulli- or BK-type stomas had better BMIs and less PN dependency in terms of volume than those with end-stomas or tube-stomas. Two patients with BK-type stomas were off PN, and three who underwent an intestinal transplantation (Itx) achieved enteral autonomy. The management of CIHG involves a precise diagnosis using Hu C/D staining, neonatal enterostomy, and stoma revision using the adjusted IR and Itx if other treatments do not enable enteral autonomy.

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競争的研究費の研究課題 【 表示 ／ 非表示 】

  • AMHによる卵胞発達の制御機構と副腎皮質ホルモンDHEAの相互作用

    2019年04月
    -
    2023年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 狩野　元宏, 若手研究, 補助金,  研究代表者

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担当授業科目 【 表示 ／ 非表示 】

  • 急性期病態学各論

    2024年度

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所属学協会 【 表示 ／ 非表示 】

  • 日本外科学会

    　

  • 日本小児外科学会

    　

  • 日本小児血液・がん学会

    　
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