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        Human Leukocyte Antigens and Biomarkers in Type 1 Diabetes Mellitus Induced by Immune-checkpoint Inhibitors

        Hidefumi Inaba,Yosuke Kaido,Saya Ito,Tomonao Hirobata,Gen Inoue,Takakazu Sugita,Yuki Yamamoto,Masatoshi Jinnin,Hiroaki Kimura,Tomoko Kobayashi,Shintaro Iwama,Hiroshi Arima,Takaaki Matsuoka 대한내분비학회 2022 Endocrinology and metabolism Vol.37 No.1

        Background: Type 1 diabetes mellitus induced by immune-checkpoint inhibitors (ICI-T1DM) is a rare critical entity. However, the etiology of ICI-T1DM remains unclear. Methods: In order to elucidate risk factors for ICI-T1DM, we evaluated the clinical course and immunological status of patients with ICI-T1DM who had been diagnosed during 2016 to 2021. Results: Seven of 871 (0.8%, six men and one woman) patients developed ICI-T1DM. We revealed that the allele frequencies of human leukocyte antigen (HLA)-DPA1*02:02 and DPB1*05:01 were significantly higher in the patients with ICI-T1DM In comparison to the controls who received ICI (11/14 vs. 10/26, P=0.022; 11/14 vs. 7/26, P=0.0027, respectively). HLA-DRB1*04:05, which has been found to be a T1DM susceptibility allele in Asians, was also observed as a high-risk allele for ICI-T1DM. The significance of the HLA-DPB1*05:01 and DRB1*04:05 alleles was confirmed by an analysis of four additional patients. The absolute/relative neutrophil count, neutrophils-lymphocyte ratio, and neutrophil-eosinophil ratio increased, and the absolute lymphocyte count and absolute/relative eosinophil count decreased at the onset as compared with 6 weeks before. In two patients, alterations in cytokines and chemokines were found at the onset. Conclusion: Novel high-risk HLA alleles and haplotypes were identified in ICI-T1DM, and peripheral blood factors may be utilized as biomarkers.

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        Small Hepatic Hemangioma Leading to Life-Threatening Bleeding Following Blunt Abdominal Trauma: A Case Report

        Rumi Nakabayashi,Yosuke Miyachi,Minami Torai,Koichiro Mitsuoka,Gen Shimada,Toshimi Kaido 대한외상중환자외과학회 2023 Journal of Acute Care Surgery Vol.13 No.3

        A male pedestrian in his 30’s was hit by a car and immediately taken to hospital by ambulance. On arrival, his blood pressure was 83/64 mmHg and his heart rate was 140 beats/min. Computed tomography showed extravasation of contrast medium from the lateral segment of the liver. Given the exacerbation caused by hypotension, an emergency laparotomy was performed. Temporary hemostasis was achieved by packing with gauze and a subsequent transcatheter arterial embolization. At the 2nd laparotomy, a small amount of active bleeding from the injury site was noted; therefore, an emergency lateral segmentectomy was performed. The postoperative course was uneventful and he was discharged home 8 days later. The pathology of the liver specimen revealed that a 2.5 cm hepatic hemangioma was the cause of bleeding. Traumatic rupture of hepatic hemangiomas is rare, and most reported cases are of giant hemangiomas. Our case demonstrated that even a small hemangioma can elicit life-threatening bleeding in blunt abdominal trauma.

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