PMID- 29264572 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220311 IS - 2472-1972 (Print) IS - 2472-1972 (Electronic) IS - 2472-1972 (Linking) VI - 1 IP - 9 DP - 2017 Sep 1 TI - Hypertension and Type 2 Diabetes Are Associated With Decreased Inhibition of Dipeptidyl Peptidase-4 by Sitagliptin. PG - 1168-1178 LID - 10.1210/js.2017-00312 [doi] AB - CONTEXT: Patients with diabetes often have comorbidities such as hypertension. It is not known how individual characteristics influence response to dipeptidyl peptidase-4 (DPP4) inhibitors. OBJECTIVE: We tested the hypothesis that individual characteristics, sitagliptin dose, and genetic variability in DPP4 influence DPP4 activity during sitagliptin. DESIGN AND SETTING: Post hoc analysis of clinical and laboratory data from individuals randomized to sitagliptin versus placebo in crossover studies. PATIENTS AND INTERVENTIONS: Sixty-five subjects [27 with type 2 diabetes mellitus (T2DM) and hypertension, 38 healthy controls] were randomized to 100 mg/d sitagliptin or 200 mg sitagliptin and matching placebo in double-blind, crossover fashion. Fasting blood was obtained at baseline and 60 to 180 minutes after sitagliptin or placebo. MAIN OUTCOME MEASURES: DPP4 activity and antigen during placebo and sitagliptin and DPP4 inhibition during sitagliptin. RESULTS: Sitagliptin 100 mg/d was less effective at inhibiting DPP4 activity in individuals with T2DM and hypertension than in healthy controls (P = 0.001, percent inhibition). In healthy controls, 100 mg/d sitagliptin was not as effective as single-dose 200 mg sitagliptin (P = 0.001, percent inhibition). DPP4 genotypes rs2909451 TT (P = 0.02) and rs759717 CC (P = 0.02) were associated with DPP4 activity during sitagliptin. In multivariable analyses, T2DM with hypertension, sitagliptin dose, age, systolic blood pressure, DPP4 activity during placebo, and rs2909451 genotype were significantly associated with DPP4 activity during sitagliptin. CONCLUSIONS: Sitagliptin is less effective in inhibiting DPP4 in individuals with T2DM and hypertension than in healthy controls. Higher doses of DPP4 inhibitors may be required in patients with the metabolic syndrome. FAU - Wilson, Jessica R AU - Wilson JR AD - Vanderbilt University Medical Center, Department of Medicine, Division of Diabetes, Endocrinology, and Metabolism, Nashville, Tennessee 37232. FAU - Shuey, Megan M AU - Shuey MM AD - Vanderbilt University, Nashville, Tennessee 37232. FAU - Brown, Nancy J AU - Brown NJ AD - Vanderbilt University Medical Center, Department of Medicine, Division of Clinical Pharmacology, Nashville, Tennessee 37232. FAU - Devin, Jessica K AU - Devin JK AD - Vanderbilt University Medical Center, Department of Medicine, Division of Diabetes, Endocrinology, and Metabolism, Nashville, Tennessee 37232. LA - eng GR - T32 DK007061/DK/NIDDK NIH HHS/United States GR - UL1 TR000445/TR/NCATS NIH HHS/United States GR - T32 GM007569/GM/NIGMS NIH HHS/United States GR - K23 HL119602/HL/NHLBI NIH HHS/United States GR - UL1 RR024975/RR/NCRR NIH HHS/United States GR - UL1 TR002243/TR/NCATS NIH HHS/United States GR - R01 HL125426/HL/NHLBI NIH HHS/United States PT - Journal Article DEP - 20170801 PL - United States TA - J Endocr Soc JT - Journal of the Endocrine Society JID - 101697997 PMC - PMC5686657 OTO - NOTNLM OT - DPP4 OT - dipeptidyl peptidase-4 inhibition OT - hypertension OT - metabolic syndrome OT - sitagliptin OT - type 2 diabetes mellitus EDAT- 2017/12/22 06:00 MHDA- 2017/12/22 06:01 PMCR- 2017/08/01 CRDT- 2017/12/22 06:00 PHST- 2017/07/10 00:00 [received] PHST- 2017/07/27 00:00 [accepted] PHST- 2017/12/22 06:00 [entrez] PHST- 2017/12/22 06:00 [pubmed] PHST- 2017/12/22 06:01 [medline] PHST- 2017/08/01 00:00 [pmc-release] AID - JS_201700312 [pii] AID - 10.1210/js.2017-00312 [doi] PST - epublish SO - J Endocr Soc. 2017 Aug 1;1(9):1168-1178. doi: 10.1210/js.2017-00312. eCollection 2017 Sep 1.