Journal
DRUG DISCOVERIES AND THERAPEUTICS
Volume 12, Issue 1, Pages 51-54Publisher
INT RESEARCH & COOPERATION ASSOC BIO & SOCIO-SCIENCES ADVANCEMENT
DOI: 10.5582/ddt.2017.01069
Keywords
Ipragliflozin; cardiac sympathetic nerve activity; heart failure; diabetes mellitus
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Ipragliflozin is the first SGLT2 inhibitor approved in Japan. Reported here is a case where long-term administration of ipragliflozin decreased the rate of re-hospitalization due to heart failure (HF). An 83-year-old man with chronic HF and diabetes mellitus (DM) was hospitalized four times in the last five years. He was discharged six months after his last hospitalization, but he continued to have class III HF according to the New York Heart Association classification (NYHA), and his DM was also not properly managed. Therefore, he received ipragliflozin. One year after initiation of ipragliflozin, he lost weight (body weight (BW): 79.0 to 76.2 kg), his levels of brain natriuretic peptide (BNP) decreased (191.4 to 122.5 mg/dL), and the class of his HF improved (class III to class II). The management of DM also improved (fasting blood glucose: 100 to 110 mg/dL; hemoglobin A1C: 6.8 to 6.6%). In addition, cardiac sympathetic nerve function evaluated with I-123-metaiodobenzylguanidine cardiac-scintigraphy (I-123-MIBG) also improved (the average of the heart-to-mediastinum ratio in early and delayed phases; 1.44 to 2.17 in the early phase, 1.41 to 1.92 in the delayed phase, washout rate; 43.3 to 35.6). The patient was not re-hospitalized due to HF two years after administration of ipragliflozin started. A reduction in cardiac sympathetic nerve hyperactivity by an SGLT2 inhibitor might be one of the mechanisms of its cardio-protective effect, but clinical studies need to be conducted to verify this finding.
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