Infliximab-Responsive Severe Ulcerative Colitis With Pyoderma Gangrenosum After IL-6 and IGF-1 Blockade.

Interleukin-6 (IL-6) and insulin-like growth factor-1 (IGF-1) are involved in immune regulation and tissue repair, but their combined effects on gastrointestinal mucosa remain unclear. We report a case of new-onset ulcerative colitis with pyoderma gangrenosum after sequential IL-6 and IGF-1 receptor...

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Publicado en:ACG Case Reports Journal Vol. 13; no. 6; pp. 1 - 5
Autores principales: Onishi, Shinobu, Otagiri, Shinsuke, Shinkai, Akihiro, Watanabe, Mika, Tanaka, Sho, Fujihata, Kenta, Aoyama, Keiya, Inoue, Ayano, Katsurada, Takehiko, Sakamoto, Naoya
Formato: case study pictorial Journal Article
Publicado: American College of Gastroenterology Jun2026
Acceso en línea:Ver este registro en EBSCOhost
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      dt: Jun2026
      vid: 13
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      pub: American College of Gastroenterology
      place: Bethesda, Maryland
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        10.14309/crj.0000000000002203
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        atl: Infliximab-Responsive Severe Ulcerative Colitis With Pyoderma Gangrenosum After IL-6 and IGF-1 Blockade.
      aug:
        au:
          Onishi, Shinobu
          Otagiri, Shinsuke
          Shinkai, Akihiro
          Watanabe, Mika
          Tanaka, Sho
          Fujihata, Kenta
          Aoyama, Keiya
          Inoue, Ayano
          Katsurada, Takehiko
          Sakamoto, Naoya
        affil: School of Medicine, Hokkaido University, Sapporo, Japan
      sug:
        subj:
          Colitis, Ulcerative Diagnosis
          Colitis, Ulcerative Drug Therapy
          Colitis, Ulcerative Chemically Induced
          Pyoderma Gangrenosum Diagnosis
          Pyoderma Gangrenosum Drug Therapy
          Pyoderma Gangrenosum Chemically Induced
          Infliximab Therapeutic Use
          Tumor Necrosis Factor
          Female
          Middle Age
          Diarrhea Etiology
          Gastrointestinal Hemorrhage Etiology
          Colonoscopy
          Biopsy
          Tomography, X-Ray Computed
          Arthritis, Rheumatoid
          Graves' Ophthalmopathy
          Tocilizumab
          Prednisolone
          Treatment Outcomes
          Wound Healing
          Interleukins
          Somatomedins
          Middle Aged: 45-64 years
          Female
      ab: Interleukin-6 (IL-6) and insulin-like growth factor-1 (IGF-1) are involved in immune regulation and tissue repair, but their combined effects on gastrointestinal mucosa remain unclear. We report a case of new-onset ulcerative colitis with pyoderma gangrenosum after sequential IL-6 and IGF-1 receptor inhibition. The patient developed severe ulcerative colitis and pyoderma gangrenosum refractory to corticosteroids but showed rapid improvement after infliximab therapy, with endoscopic evidence of mucosal improvement. This case highlights a potential role for tumor necrosis factor-a (TNF-a) blockade in reversing severe immune dysregulation induced by IL-6 and IGF-1 inhibition.
      pubtype: Academic Journal
      doctype:
        case study
        pictorial
        Journal Article
      ougenre: Article
    language: English
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