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Migrating contractions of the afferent and Roux limbs show peristaltic movement independently of each other in conscious dogs after Roux-en-Y reconstruction after distal gastrectomy

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Abstract

Purpose

The Roux-en-Y (RY) procedure is used frequently for surgical reconstruction after gastrectomy. However, a minority of patients suffer a serious motility disorder of the Roux and afferent limb postoperatively. We conducted this study to clarify the association between the motility and peristaltic direction of two limbs in conscious dogs.

Methods

We performed distal gastrectomy on five dogs and implanted seven force transducers on the serosal surfaces of the remnant gastric body and afferent and Roux limbs. We then analyzed the electric signals from these force transducers.

Results

Migrating contractions were observed in the two limbs, but not in the gastric remnant body. Migrating contractions in the forward direction propagated independently from the most proximal side in each limb. There was no propagation of contraction across the jejunojejunostomy between the two limbs.

Conclusions

Each proximal part of the Roux and afferent limbs has an independent motility pacemaker in conscious dogs after gastrectomy with RY reconstruction.

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Acknowledgements

We thank Ms. Yukie Saito, Ms. Tomoko Yano, Ms. Yuka Matsui, Ms. Sayaka Okada, Ms. Kayoko Takahashi, Ms. Yuki Saka, Ms. Mizue Murata and Ms. Kanna Nakamura for their excellent assistance. This work was carried out in part at Bioresource Center, Gunma University Graduate School of Medicine.

Funding

The work was supported by Grants-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) (grant numbers JP 26461969, JP15K10085 and JP17K19893).

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Authors and Affiliations

  1. Department of General Surgical Science, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan

    Masaki Suzuki, Kyoichi Ogata, Nobuhiro Nakazawa, Akiharu Kimura, Norimichi Kogure & Hiroyuki Kuwano

  2. Research Program for Omics-Based Medical Science, Division of Integrated Oncology Research, Gunma University Initiative for Advanced Research (GIAR), Maebashi, Gunma, Japan

    Takehiko Yokobori

  3. Department of Digestive Tract and General Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan

    Erito Mochiki

Authors
  1. Masaki Suzuki
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  2. Takehiko Yokobori
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  3. Kyoichi Ogata
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  4. Nobuhiro Nakazawa
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  5. Akiharu Kimura
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  7. Erito Mochiki
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  8. Hiroyuki Kuwano
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Correspondence to Masaki Suzuki.

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Suzuki, M., Yokobori, T., Ogata, K. et al. Migrating contractions of the afferent and Roux limbs show peristaltic movement independently of each other in conscious dogs after Roux-en-Y reconstruction after distal gastrectomy. Surg Today 51, 391–396 (2021). https://doi.org/10.1007/s00595-020-02139-8

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  • DOI: https://doi.org/10.1007/s00595-020-02139-8

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