The carriage of risk variants of CDKAL1 impairs beta-cell function in both diabetic and non-diabetic patients and reduces response to non-sulfonylurea and sulfonylurea agonists of the pancreatic KATP channel

2011 ◽  
Vol 48 (3) ◽  
pp. 227-235 ◽  
Author(s):  
Dimitry A. Chistiakov ◽  
V. A. Potapov ◽  
S. A. Smetanina ◽  
L. N. Bel’chikova ◽  
L. A. Suplotova ◽  
...  
2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Haoyong Yu ◽  
Ruixia Li ◽  
Lei Zhang ◽  
Haibing Chen ◽  
Yuqian Bao ◽  
...  

CA19-9 is a tumor-associated antigen. It is also a marker of pancreatic tissue damage that might be caused by diabetes. Long-term poor glycemic control may lead to pancreatic beta cell dysfunction which is reflected by elevated serum CA19-9 level. Intracellular cholesterol accumulation leads to islet dysfunction and impaired insulin secretion which provide a new lipotoxic model. This study firstly found total cholesterol was one of the independent contributors to CA19-9. Elevated serum CA19-9 level in diabetic patients may indicate further investigations of glycemic control, pancreatic beta cell function, and total cholesterol level.


Pancreas ◽  
1986 ◽  
Vol 1 (5) ◽  
pp. 411-414
Author(s):  
Ambady Ramachandran ◽  
Chamukuttan Snehalatha ◽  
Viswanathan Mohan ◽  
Appa Rao ◽  
Moopil Viswanathan

1984 ◽  
Vol 26 (1) ◽  
pp. 13-17 ◽  
Author(s):  
K. T�tterman ◽  
L. Groop ◽  
P. -H. Groop ◽  
R. Kala ◽  
E. -M. Tolppanen ◽  
...  

1990 ◽  
Vol 3 (5) ◽  
pp. 579-585
Author(s):  
Jaume Binimelis ◽  
Mercedes Codina ◽  
Josep Oriola ◽  
Begoña Amill ◽  
Antonio Perez ◽  
...  

2015 ◽  
Vol 100 (5) ◽  
pp. 1984-1988 ◽  
Author(s):  
Fernanda S. Novaes ◽  
Ana C. J. Vasques ◽  
José C. Pareja ◽  
Filip K. Knop ◽  
Andrea Tura ◽  
...  

Abstract Context: Bariatric surgery often results in remission of the diabetic state in obese patients. Increased incretin effect seems to play an important role in the glycemic improvements after Roux-en-Y gastric bypass, but the impact of biliopancreatic diversion (BPD) remains unexplored. Objective: The objective was to elucidate the effect of BPD on the incretin effect and its interplay with beta-cell function and insulin sensitivity (IS) in obese subjects with type 2 diabetes (T2DM). Design, Setting and Patients: Twenty-three women were studied: a control group of 13 lean, normal glucose-tolerant women (lean NGT) studied once and 10 obese patients with T2DM studied before, 1 and 12 months after BPD. Intervention: The ObeseT2DM group underwent BPD. Main Outcome Measures: The main outcome measure was the change in incretin effect as measured by the isoglycemic intravenous glucose infusion test. Secondary outcomes encompassed IS and beta-cell function. Results: At baseline, the incretin effect was lower in obese T2DM compared to lean NGT (P < .05). One month after BPD, the incretin effect was not changed, but at 12 months it reached the level of the lean NGT group (P > .05). IS improved (P < .05) 1 month after BPD and at 12 months it resembled the levels of the lean NGT group. Insulin secretory rate and beta-cell glucose sensitivity increased after BPD and achieved levels similar to lean NGT group 1 month after BPD and even higher levels at 12 months (P < .05). Conclusions: BPD has no acute impact on the reduced incretin effect, but 12 months after surgery the incretin effect normalizes alongside normalization of glucose control, IS and beta-cell function.


2021 ◽  
Vol 32 (01) ◽  
pp. 22-27
Author(s):  
Tashfeen Ikram ◽  
Muniza Saeed ◽  
Sabiha Iqbal ◽  
Zunairah Hamayun ◽  
Hifza Noor Lodhi ◽  
...  

Introduction: Non-diabetic individuals with type II diabetic parents are more susceptible to develop Diabetes. Visfatin; an adipocytokine and an enzyme is linked with glucose metabolism and affected by obesity. It works like insulin in the human body.  It serves as a key enzyme in nicotinamide adenine dinucleotide biosynthesis and plays a pivotal role in glucose mediated insulin secretion. Aims and Objectives: In this study we aimed to determine and compare serum visfatin levels, insulin resistance (HOMA-IR) and beta cell function (HOMA-%B) of type II diabetic patients and non-diabetic adult offspring of type II diabetic parents with that of non-diabetic adult offspring of non-diabetic parents. Material and methods It was a cross-sectional comparative study conducted at Diabetes clinic of Lahore General Hospital (LGH) and department of Physiology, Post Graduate Medical Institute (PGMI), Lahore in 2018. The study groups included thirty type II diabetic subjects (group III) and forty non-diabetic adult offspring of type II diabetic parents (group II). Forty non-diabetic adult offspring of non-diabetic parents served as controls (group I). The subjects were of thirty to fifty years of age. Blood pressure, BMI and waist circumference of every subject was measured. Fasting blood samples of the subjects were analyzed for serum insulin, glucose and visfatin. Insulin resistance (HOMA-IR), insulin sensitivity (HOMA-%S) and beta cell function (HOMA-%β) were also calculated. Results Type II diabetics (group III) had significantly higher serum visfatin, HOMA-IR, and lower HOMA-%S as compared to the controls (group I). No significant difference was found between HOMA-%B of group III and controls. On the contrary, non-diabetic adult offspring of type II diabetic parents (group II) had significantly lower serum visfatin and HOMA-%S while HOMA-%β, HOMA-IR was significantly higher in comparison to the control group (group I). Conclusion Visfatin production seems suppressed in non-diabetic individuals with type II diabetic parents probably due to hyperinsulinemia. Moreover, it has a little role in insulin secretion in these individuals as reflected by their higher HOMA-%B index. However, visfatin’s upregulation in chronic hyperglycemia is indicative of its restorative role in the declined beta-cell function in type II diabetics.


1985 ◽  
Vol 110 (4_Suppl) ◽  
pp. S73-S77 ◽  
Author(s):  
Ole K. Faber

Abstract. Beta-cell function, as evaluated from plasma C-peptide measurements, is found in all insulin dependent diabetic patients the first months of disease and in about 15% of patients with more than 15 years of treatment. The beta-cells are capable of modulating their secretory activity in response to changes in blood glucose. Even a minimal residual insulin secretion is of metabolic significance. Key words: insulin dependent diabetes mellitus, beta-cell function, C-peptide metabolic control.


Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 2129-P ◽  
Author(s):  
YUANYUAN ZHANG ◽  
RONGXIN SUN ◽  
LIJIE ZHANG ◽  
YUAN FANG ◽  
CAIGUO YU ◽  
...  

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