Evidence mapPaperPMID 41428159Full record

Observational studyObesity surgery2026

Association of Macrophage Accumulation and Polarization in Patients with Obesity and Diabetes with Diabetic Remission After Bariatric Surgery.

Sa-Hong Kim, Ji-Soo Kim, Jaeun Yoo, Kyoungyun Jeong, Jeesun Kim, Yo-Seok Cho, Ji-Hyeon Park, Jaemoon Koh, Seong-Ho Kong, Do-Joong Park and 4 more

Abstract readObservational Study
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Observational study in Obesity surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

14 authors.

Sa-Hong KimDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Ji-Soo KimDepartment of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea.
Jaeun YooCancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.
Kyoungyun JeongCancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.
Jeesun KimDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Yo-Seok ChoDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Ji-Hyeon ParkDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Jaemoon KohDepartment of Pathology, Seoul National University Hospital, Seoul, Republic of Korea.
Seong-Ho KongDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Do-Joong ParkDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Young-Min ChoDepartment of Internal Medicine, Seoul National University Hospital, Seoul, Republic of Korea.
Doo Hyun ChungDepartment of Pathology, Seoul National University Hospital, Seoul, Republic of Korea.
Han-Kwang YangDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.
Hyuk-Joon LeeDepartment of Surgery, Seoul National University Hospital, Seoul, Republic of Korea. appe98@snu.ac.kr.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionChronically elevated proinflammatory cytokines and following low-grade tissue inflammation in adipose tissue of patients with obesity induced by M1 macrophages may increase insulin resistance and type 2 diabetes. However, actual macrophage distribution in patients with obesity and diabetes has not clearly confirmed yet. We aimed to reveal the relationship of macrophage accumulation and polarization in visceral fat to patients’ obesity and diabetes status, and to validate the role of preoperative M1 macrophage polarization as a predictor for diabetic remission after bariatric surgery.

methodsThis single-center prospective observational study enrolled 80 patients. Experimental and control 1 group included patients with BMI≧30, with/without type 2 diabetes. Control 2 and control 3 group included patients with stage I gastric cancer and BMI<25, with/without type 2 diabetes. Macrophage accumulation and polarization were evaluated from visceral fat, collected during surgery, through histology, flow cytometry, and RT-PCR. Diabetic and inflammatory indices were assessed preoperatively and postoperatively 12 months. Experimental group were additionally analyzed based on postoperative diabetic remission and preoperative ABCD score.

resultsPatients with obesity (experimental and control 1) exhibited higher macrophage accumulation (p<0.001), M1 polarization (p<0.001), insulin resistance, WBC, CRP, and M1 marker (PELI1) than patients without obesity. Experimental group showed significantly higher macrophage accumulation (p<0.001). M1 dominance was observed in patients achieving complete remission postoperatively or with ABCD score≧7 preoperatively.

conclusionPatients with obesity and diabetes (experimental) demonstrated macrophage accumulation, M1 polarization, and proinflammatory circumstance. Preoperative M1 dominance with proinflammatory circumstances may be associated with better diabetic remission after bariatric surgery.

Indexed as

Bariatric SurgeryDiabetes Mellitus, Type 2Intra-Abdominal FatMacrophagesObesity, MorbidAdultBody Mass IndexDiabesityFemaleHumansInsulin ResistanceMaleMiddle AgedProspective StudiesRemission InductionBariatric surgeryDiabetes mellitus, type 2MacrophageObesity

Identifiers

PMID41428159
PMCPMC12957124

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.