P. Rheeder et al., Ethnic differences in C-peptide levels and anti-GAD antibodies in South African patients with diabetic ketoacidosis, QJM-MON J A, 94(1), 2001, pp. 39-43
Citations number
16
Categorie Soggetti
General & Internal Medicine","Medical Research General Topics
Journal title
QJM-MONTHLY JOURNAL OF THE ASSOCIATION OF PHYSICIANS
To determine differences between Black and White South Africans with diabet
ic ketoacidosis (DKA) and between Black patients on insulin vs. those on or
al agents presenting with DKA, post stabilization fasting C-peptide levels
and anti-glutamic acid decarboxylase (GAD) antibodies were measured togethe
r with serum glucose, acid base and urine ketones on admission. Of 60 patie
nts with diabetic ketoacidosis (DKA) (76 admissions), the 43 Black patients
had a higher BMI (23.1 vs. 20.0 kg/m(2), p=0.05) than did the 17 White pat
ients, were more often newly diagnosed (37% vs. 1%, p=0.03), and a greater
proportion of Black patients had fasting C-peptide levels > 0.3 nmol/l (28%
(10/36) vs. 0%, p=0.03). Of these 10 Black patients, eight were anti-GAD-n
egative. Thirteen Black patients (33%) were anti-CAD-positive vs. 10 (67%)
White patients (p=0.03). There was no statistically significant difference
in anti-CAD positivity between Black patients on oral agents or those on in
sulin. Most patients (5/7) admitted on oral agents had negative C-peptide l
evels after stabilization. Our results suggest that in patients presenting
with DKA, a quarter of Black South Africans have C-peptide levels regarded
as being indicative of type 2 DM and are less frequently anti-CAD-antibody-
positive than are White South Africans.