Review Article

Exocrine Pancreatic Insufficiency in Diabetic Patients: Prevalence, Mechanisms, and Treatment

Table 1

Investigation of pancreatic exocrine insufficiency with fecal elastase in type I diabetes patients.

StudyPatientsPEI prevalenceFactors associated with PEIStrengthsLimitations

Hardt et al. 2002 [9]
(cross sectional-study)
323Elastase <200 = 51%
Elastase <100 = 28.5%
(i) Association with diabetes duration, early onset, and insulin usage
(ii) No association with age and sex
(i) Large cohort of patients
(ii) Inclusion and exclusion criteria well designed
(i) Cross-sectional study without prospective evaluation of patients
(ii) Risk factors subgroup analysis not performed in DI and DII patients

Larger et al. 2012 [10]
(cross-sectional study)
195Elastase <200 = 34%
Elastase <100 = 19%
(i) Association with diabetes duration
(ii) No association with insulin dose, elevated BMI, age, and early age at onset
(i) Large cohort of patients
(ii) Risk factors subgroup analysis performed
(i) Cross-sectional study without prospective evaluation of patients
(ii) Patients with type III diabetes included
(iii) Inclusion and exclusion criteria not well specified

Icks et al. 2001 [11]
(cross-sectional study)
112Elastase < 200 = 45.5%
Elastase < 100 = 25.9%
(i) Association with male sex and age
(ii) No association with diabetes duration, elevated BMI, early age at diabetes onset, and smoke or alcohol usage
(i) Specifically performed on type I diabetes patients
(ii) Case-control study
(iii) Risk factors specifically and extensively evaluated
(i) Relatively small number of patients
(ii) Cross-sectional study without prospective evaluation of patients

Cavalot et al. 2006 [12]
(cross-sectional study)
66Elastase < 200 = 25.8%
Elastase < 100 = 10.6%
(i) No association with age, diabetes duration, elevated HbA1c, early age at diabetes onset, and elevated BMI(i) Specifically performed on type I diabetes patients
(ii) Extensive analysis on PEI-related clinical symptoms
(i) Small number of patients
(ii) Cross-sectional study without prospective evaluation of patients

Vujasinovic et al. 2013 [13]
(cross-sectional study)
50Elastase < 200 = 6%
Elastase < 100 = 2%
(i) No association with diabetes duration(i) Extensive analysis on PEI-related clinical symptoms
(ii) MRI with MRCP performed in all diabetic patients with PEI
(i) Small number of patients
(ii) Enrollment criteria not well-defined
(iii) Cross-sectional study without prospective evaluation of patients defined
(iv) Poor risk factors analysis

Hahn et al. 2008 [14]
(cross-sectional study)
33Elastase < 200 = 27.3%(i) No association with sex, age, diabetes duration, elevated HbA1c, early age at diabetes onset, and elevated BMI(i) All patients underwent both SCT and indirect tests to assess PEI(i) Very small number of patients
(ii) Cross-sectional study without prospective evaluation of patients defined

Hardt et al. 2000 [15]
(cross-sectional study)
31Elastase < 200 = 56.7%
Elastase < 100 = 30%
(i) Association with GI symptoms
(ii) No association with diabetes duration and alcohol usage
ā€‰(i) Very small number of patients
(ii) Enrollment criteria not well-defined
(iii) Cross-sectional study without prospective evaluation of patients defined
(iv) No subgroup analysis performed for DI and DII

PEI = pancreatic exocrine insufficiency.
MRI = Magnetic Resonance Imaging.
MRCP = Magnetic Resonance Cholangiopancreatography.
BMI = body mass index.
DI = type I diabetes; DII = type II diabetes.