Dipeptidyl peptidase-4 inhibitor treatment could decrease Klebsiella pneumoniae pneumonia in patients with type 2

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A Robust Pneumonia Model in Immunocompetent Rodents to Evaluate Antibacterial Efficacy against S. pneumoniae, H. influenzae, K. pneumoniae, P. aeruginosa or A. baumannii

Published on: January 2, 2017

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Hsin-Hung Chen1,2, Ching-Chu Chen3,4, Chun-Wei Ho1

  • 1Intelligent Diabetes Metabolism and Exercise Center, China Medical University Hospital , Taichung, Taiwan.

Postgraduate Medicine
|July 8, 2020
PubMed
Abstract

Insights

Dipeptidyl peptidase-4 inhibitors (DPP4i) significantly reduced the risk of Klebsiella pneumoniae (KP) pneumonia in patients with type 2 diabetes. This suggests DPP4i may offer a protective effect against this common infection in diabetic populations.

Area of Science:

  • Infectious Diseases
  • Endocrinology
  • Pharmacology

Background:

  • Type 2 diabetes is associated with an increased risk of infections.
  • Klebsiella pneumoniae (KP) pneumonia is a serious concern in diabetic patients.
  • Dipeptidyl peptidase-4 inhibitors (DPP4i) are commonly used to manage type 2 diabetes.

Purpose of the Study:

  • To investigate the potential protective effect of DPP4 inhibitors against Klebsiella pneumoniae pneumonia in individuals with type 2 diabetes.
  • To analyze the association between DPP4 inhibitor use and the incidence of KP pneumonia.

Main Methods:

  • Population-based, observational study involving patients newly diagnosed with type 2 diabetes (2009-2012).
  • Utilized multivariable Cox proportional hazards models and propensity score adjustments to assess KP pneumonia risk.
  • Employed Kaplan-Meier method and log-rank test to compare cumulative incidence between DPP4i users and non-users.

Main Results:

  • DPP4 inhibitor users exhibited a lower incidence rate of KP pneumonia (1.51 per 1000 person-years) compared to non-users (2.25 per 1000 person-years).
  • DPP4 inhibitor use was associated with a significantly lower cumulative incidence of KP pneumonia (p=0.03).
  • Adjusted hazard ratio indicated a 33% lower risk of KP pneumonia in DPP4 inhibitor users (aHR=0.67, 95% CI=0.48-0.95).

Conclusions:

  • DPP4 inhibitor use is associated with a decreased risk of Klebsiella pneumoniae pneumonia in patients with type 2 diabetes.
  • Factors such as male gender, comorbidities, higher Diabetes Complications Severity Index (DCSI) score, and higher defined daily dose (DDD) of DPP4i were linked to reduced KP pneumonia risk.
  • The potential role of DPP4 inhibitors in modulating immunological responses warrants further consideration.
Keywords:
Dipeptidyl peptidase-4 inhibitor (DPP4i)cohort studydiabetesklebsiella pneumoniae (KP)

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