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Reduced leptin concentrations in subjects with type 2 diabetes mellitus in Sudan.

Abdelgadir, M; Elbagir, M; Eltom, M; Berne, C and Ahrén, Bo LU (2002) In Metabolism, Clinical and Experimental 51(3). p.304-306
Abstract
Differences have been observed in the relationship between leptin and metabolic perturbations in glucose homeostasis. Because no information is available from indigenous African populations with diabetes, the purpose of this study was to investigate the possible associations between leptin and different clinical and biochemical characteristics of a large group of subjects with type 2 diabetes mellitus in Sudan. A total of 104 (45 men and 59 women) consecutive type 2 diabetes patients and 75 control subjects (34 men and 41 women) were studied. The body mass index (BMI), blood glucose, serum insulin, and proinsulin were measured and related to serum leptin concentrations. Leptin was higher in females than in males and correlated... (More)
Differences have been observed in the relationship between leptin and metabolic perturbations in glucose homeostasis. Because no information is available from indigenous African populations with diabetes, the purpose of this study was to investigate the possible associations between leptin and different clinical and biochemical characteristics of a large group of subjects with type 2 diabetes mellitus in Sudan. A total of 104 (45 men and 59 women) consecutive type 2 diabetes patients and 75 control subjects (34 men and 41 women) were studied. The body mass index (BMI), blood glucose, serum insulin, and proinsulin were measured and related to serum leptin concentrations. Leptin was higher in females than in males and correlated significantly to BMI. The main novel finding was that serum leptin was significantly lower in diabetic subjects compared with controls in both females (P =.0001) and males (P =.019), although BMI did not differ between diabetic and nondiabetic subjects. Diabetic subjects treated with sulphonylurea (n = 81) had lower BMI than those treated with diet alone or other hypoglycemic drugs (n = 23) (P =.0017), but there was no difference in leptin levels between the 2 groups after adjustment for BMI (P =.87). In diabetic subjects, serum leptin correlated positively with the homeostatic assessment (HOMA) of both beta-cell function (P =.018) and insulin resistance (P =.038), whereas in control subjects, leptin correlated with insulin resistance (P =.0016), but not with beta-cell function. Diabetic subjects had higher proinsulin levels (P =.0031) and higher proinsulin to insulin ratio (P =.0003) than nondiabetic subjects. In univariate analysis, proinsulin showed a weak correlation to leptin (P =.049). In conclusion, we show in a large cohort of Sudanese subjects with type 2 diabetes that circulating leptin levels are lower in diabetic subjectss than in controls of similar age and BMI. The lower serum leptin in diabetic subjects may be a consequence of differences in fat distribution. (Less)
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published
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keywords
Homeostasis, Human, Insulin Resistance, Leptin/*blood, Islets of Langerhans/physiopathology, Male, Middle Age, *Negroid Race, Osmolar Concentration, Proinsulin/blood, Reference Values, Sudan, Sulfonylurea Compounds/therapeutic use, Non-U.S. Gov't, Support, Diabetes Mellitus, Non-Insulin-Dependent/*blood/*ethnology/physiopathology/therapy, Diet Therapy, Female, Body Mass Index, Adult, Aged
in
Metabolism, Clinical and Experimental
volume
51
issue
3
pages
304 - 306
publisher
Elsevier
external identifiers
  • wos:000174266200006
  • pmid:11887164
  • scopus:0036120013
ISSN
1532-8600
DOI
10.1053/meta.2002.30504
language
English
LU publication?
yes
id
cbfede82-a53a-47e6-b9d6-74495cf872a8 (old id 106115)
alternative location
http://www.ncbi.nlm.nih.gov:80/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=11887164&dopt=Abstract
date added to LUP
2007-06-26 13:56:09
date last changed
2017-09-17 07:29:34
@article{cbfede82-a53a-47e6-b9d6-74495cf872a8,
  abstract     = {Differences have been observed in the relationship between leptin and metabolic perturbations in glucose homeostasis. Because no information is available from indigenous African populations with diabetes, the purpose of this study was to investigate the possible associations between leptin and different clinical and biochemical characteristics of a large group of subjects with type 2 diabetes mellitus in Sudan. A total of 104 (45 men and 59 women) consecutive type 2 diabetes patients and 75 control subjects (34 men and 41 women) were studied. The body mass index (BMI), blood glucose, serum insulin, and proinsulin were measured and related to serum leptin concentrations. Leptin was higher in females than in males and correlated significantly to BMI. The main novel finding was that serum leptin was significantly lower in diabetic subjects compared with controls in both females (P =.0001) and males (P =.019), although BMI did not differ between diabetic and nondiabetic subjects. Diabetic subjects treated with sulphonylurea (n = 81) had lower BMI than those treated with diet alone or other hypoglycemic drugs (n = 23) (P =.0017), but there was no difference in leptin levels between the 2 groups after adjustment for BMI (P =.87). In diabetic subjects, serum leptin correlated positively with the homeostatic assessment (HOMA) of both beta-cell function (P =.018) and insulin resistance (P =.038), whereas in control subjects, leptin correlated with insulin resistance (P =.0016), but not with beta-cell function. Diabetic subjects had higher proinsulin levels (P =.0031) and higher proinsulin to insulin ratio (P =.0003) than nondiabetic subjects. In univariate analysis, proinsulin showed a weak correlation to leptin (P =.049). In conclusion, we show in a large cohort of Sudanese subjects with type 2 diabetes that circulating leptin levels are lower in diabetic subjectss than in controls of similar age and BMI. The lower serum leptin in diabetic subjects may be a consequence of differences in fat distribution.},
  author       = {Abdelgadir, M and Elbagir, M and Eltom, M and Berne, C and Ahrén, Bo},
  issn         = {1532-8600},
  keyword      = {Homeostasis,Human,Insulin Resistance,Leptin/*blood,Islets of Langerhans/physiopathology,Male,Middle Age,*Negroid Race,Osmolar Concentration,Proinsulin/blood,Reference Values,Sudan,Sulfonylurea Compounds/therapeutic use,Non-U.S. Gov't,Support,Diabetes Mellitus,Non-Insulin-Dependent/*blood/*ethnology/physiopathology/therapy,Diet Therapy,Female,Body Mass Index,Adult,Aged},
  language     = {eng},
  number       = {3},
  pages        = {304--306},
  publisher    = {Elsevier},
  series       = {Metabolism, Clinical and Experimental},
  title        = {Reduced leptin concentrations in subjects with type 2 diabetes mellitus in Sudan.},
  url          = {http://dx.doi.org/10.1053/meta.2002.30504},
  volume       = {51},
  year         = {2002},
}