Toshihito Otani1, Kakuhiro Yamaguchi2, Satoshi Nakao3, Shinjiro Sakamoto1, Yasushi Horimasu1, Takeshi Masuda1, Shintaro Miyamoto1, Taku Nakashima1, Hiroshi Iwamoto1, Kazunori Fujitaka1, Hironobu Hamada4, Noboru Hattori1. 1. Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan. 2. Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan. yamaguchikakuhiro@gmail.com. 3. Department of Internal Medicine, Mitsugi General Hospital, 124, Ichi, Mitsugi-cho, Onomichi, Hiroshima, 722-0393, Japan. 4. Department of Physical Analysis and Therapeutic Sciences, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
Abstract
PURPOSE: Cytotoxic chemotherapy-induced lung injury is a fatal complication in patients with lung cancer and interstitial lung disease (ILD). We aimed to evaluate the association between hyperglycemia and this form of lung injury in patients with lung cancer concomitant with ILD. METHODS: From 1147 patients with advanced lung cancer, we retrospectively enrolled 98 patients with ILD whose hemoglobin A1c (HbA1c) levels were measured, and investigated the association between HbA1c levels and cytotoxic chemotherapy-induced lung injury. In 73 patients whose serum samples were retained, we measured serum levels of advanced glycation end products (AGE) and assessed the association of AGE levels with HbA1c levels and cytotoxic chemotherapy-induced lung injury. RESULTS: The incidence of cytotoxic chemotherapy-induced lung injury was significantly higher in patients with HbA1c levels ≥ 5.8% than in those with HbA1c levels < 5.8%, but not in those with HbA1c levels ≥ 6.5% than in those with HbA1c levels < 6.5%. The multivariate logistic regression model revealed that HbA1c level ≥ 5.8% was a significant risk factor for this complication [odds ratio 3.178 (95% confidence interval 1.057-9.556), P = 0.040]. In addition, serum AGE levels were significantly higher in patients with HbA1c levels ≥ 5.8% than in those with HbA1c levels < 5.8% [median (interquartile range); 0.129 (0.023-0.290) and 0.474 (0.213-1.109) μg/mL, P = 0.001]. CONCLUSION: Glucose intolerance (e.g., HbA1c level ≥ 5.8%) may be a risk factor of cytotoxic chemotherapy-induced lung injury, which might be associated with elevated AGE production due to hyperglycemia.
PURPOSE: Cytotoxic chemotherapy-induced lung injury is a fatal complication in patients with lung cancer and interstitial lung disease (ILD). We aimed to evaluate the association between hyperglycemia and this form of lung injury in patients with lung cancer concomitant with ILD. METHODS: From 1147 patients with advanced lung cancer, we retrospectively enrolled 98 patients with ILD whose hemoglobin A1c (HbA1c) levels were measured, and investigated the association between HbA1c levels and cytotoxic chemotherapy-induced lung injury. In 73 patients whose serum samples were retained, we measured serum levels of advanced glycation end products (AGE) and assessed the association of AGE levels with HbA1c levels and cytotoxic chemotherapy-induced lung injury. RESULTS: The incidence of cytotoxic chemotherapy-induced lung injury was significantly higher in patients with HbA1c levels ≥ 5.8% than in those with HbA1c levels < 5.8%, but not in those with HbA1c levels ≥ 6.5% than in those with HbA1c levels < 6.5%. The multivariate logistic regression model revealed that HbA1c level ≥ 5.8% was a significant risk factor for this complication [odds ratio 3.178 (95% confidence interval 1.057-9.556), P = 0.040]. In addition, serum AGE levels were significantly higher in patients with HbA1c levels ≥ 5.8% than in those with HbA1c levels < 5.8% [median (interquartile range); 0.129 (0.023-0.290) and 0.474 (0.213-1.109) μg/mL, P = 0.001]. CONCLUSION: Glucose intolerance (e.g., HbA1c level ≥ 5.8%) may be a risk factor of cytotoxic chemotherapy-induced lung injury, which might be associated with elevated AGE production due to hyperglycemia.
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