scholarly journals Metformin adherence in patients with type 2 diabetes and its association with glycated haemoglobin levels

2020 ◽  
Vol 12 (4) ◽  
pp. 318 ◽  
Author(s):  
Lynne Chepulis ◽  
Christopher Mayo ◽  
Brittany Morison ◽  
Rawiri Keenan ◽  
Chunhuan Lao ◽  
...  

ABSTRACT INTRODUCTIONMetformin is the initial medication of choice for most patients with type 2 diabetes. Non-adherence results in poorer glycaemic control and increased risk of complications. AIMThe aim of this study was to characterise metformin adherence and association with glycated haemoglobin (HbA1c) levels in a cohort of patients with type 2 diabetes. METHODSPrescription and dispensing data were used for this study. Primary care clinical and demographic data were collected from 10 general practices (October 2016–March 2018) and linked to pharmaceutical dispensing information. Metformin adherence was initially measured by calculating the proportion of patients who had optimal medication cover for at least 80% of days (defined as a medication possession ratio (MPR) of ≥0.8), calculated using dispensing data. Prescription adherence was assessed by comparing prescription and dispensing data. The association between non-adherence (MPR <0.8) and HbA1c levels was also assessed. RESULTSOf the 1595 patients with ≥2 metformin prescriptions, the mean MPR was 0.87. Fewer Māori had an MPR ≥0.8 than New Zealand European (63.8% vs. 81.2%). Similarly, Māori received fewer metformin prescriptions (P=0.02), although prescription adherence did not differ by ethnicity. Prescription adherence was lower in younger patients (P=0.002). Mean HbA1c levels were reduced by 4.8 and 5.0mmol/mol, respectively, in all and Māori patients with an MPR ≥0.8. Total prescription adherence reduced HbA1c by 3.2mmol/mol (all P<0.01). DISCUSSIONEthnic disparity exists for metformin prescribing, leading to an overall reduction in metformin coverage for Māori patients. This needs to be explored further, including understanding whether this is a patient preference or health system issue.

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Xiaowen Zhang ◽  
Jie Sun ◽  
Wenqing Han ◽  
Yaqiu Jiang ◽  
Shiqiao Peng ◽  
...  

Objective. Type 2 deiodinase (Dio2) is an enzyme responsible for the conversion of T4 to T3. The Thr92Ala polymorphism has been shown related to an increased risk for developing type 2 diabetes mellitus (T2DM). The aim of this study is to assess the association between this polymorphism and glycemic control in T2DM patients as marked by the HbA1C levels.Design and Methods.The terms “rs225014,” “thr92ala,” “T92A,” or “dio2 a/g” were used to search for eligible studies in the PubMed, Embase, and Cochrane databases and Google Scholar. A systematic review and meta-analysis of studies including both polymorphism testing and glycated hemoglobin (HbA1C) assays were performed.Results. Four studies were selected, totaling 2190 subjects. The pooled mean difference of the studies was 0.48% (95% CI, 0.18–0.77%), indicating that type 2 diabetics homozygous for the Dio2 Thr92Ala polymorphism had higher HbA1C levels.Conclusions. Homozygosity for the Dio2 Thr92Ala polymorphism is associated with higher HbA1C levels in T2DM patients. To confirm this conclusion, more studies of larger populations are needed.


2015 ◽  
Vol 18 (2) ◽  
pp. 84-88
Author(s):  
Natalya Vladislavovna Zaytseva ◽  
Ivona Renata Jarek-Martynova

Aim. To investigate the efficacy and safety of combined glimepiride and metformin therapy in patients with type 2 diabetes mellitus (T2DM). Materials and methods. A multi-centre, open-label, prospective, observational study was conducted. A total of 1200 patients with T2DM inadequately controlled with metformin, glimepiride or combination of metformin + glimepiride were enrolled. Change in serum glycated haemoglobin (HbA1c), fasting plasma glucose (FPG), and postprandial blood glucose (PPG) levels; weight; waist circumference and hypoglycemic episodes were evaluated. Results. Baseline HbA1c levels (8.24% ? 0.42%) were significantly reduced after 12 weeks of treatment (7.48% ? 0.48%) and at the end of the study. (6.88% ? 0.56%). Target HbA1c levels (?7%) were achieved in 65.1% of patients at the final visit at 24 weeks. FPG and PPG levels decreased by 1.45 ? 1.14 mmol/l and 2.17 ? 1.27 mmol/l respectively (p < 0.001). No severe hypoglycemic events were reported. Body mass index reduced by 0.85 ? 1.28 kg/m2 (p < 0.001). Conclusion. . Combined glimepiride and metformin therapy significantly improved long-term glycemic control in patients with T2DM during the period of 24 weeks. without additional risk of hypoglycemic events or weight gain.


2021 ◽  
Author(s):  
Zahra Mazloum Khorasani ◽  
Saeed Choobkar ◽  
Ramin Khameneh Bagheri ◽  
Mina AkbariRad ◽  
Abdollah Firoozi

Adiponectin is an adipocytokine that has a higher serum level in healthy people. In type 2 diabetes, insulin resistance, hypertension, MI, and dyslipidemia, the serum level of adiponectin is lower than 4 µg/mL. Adiponectin is proved to have a protective role against atherosclerotic changes where its low serum levels in type 2 diabetes can lead to the progression of atherosclerotic lesions. In this study, we aimed to survey the possible effects of adiponectin in the development of coronary artery disease in type 2 diabetics. Thirty diabetic cases with coronary artery disease, 30 diabetic cases without known coronary artery disease, and a group of 30 healthy volunteers, all of them were between 18-65-year-old, were entered ourstudy. We gathered demographic data by performing a physical examination followed by filling a checklist and a set of laboratory tests. All the groups were sex and age-matched (P=0.284 and P=0.163 respectively). CAD group had the lowest HBA1C (P<0.001). Both LDL and HDL were also lower in the CAD group (P<0.001). Adiponectin was also lower in the CAD group when compared to other groups (P<0.008) or when compared with only normal diabetics (P<0.002). We found a correlation between adiponectin and HDL (r=0.348, P=0.008), suggesting each unit of reduction in serum level of adiponectin could increase the chance of coronary artery disease by 38% in diabetics. In this study, we showed that the lower serum level of adiponectin is correlated with an increased risk of coronary artery disease in type 2 diabetics.


CNS Spectrums ◽  
2019 ◽  
Vol 24 (04) ◽  
pp. 453-459 ◽  
Author(s):  
Mao-Hsuan Huang ◽  
Mu-Hong Chen ◽  
Kai-Lin Huang ◽  
Ju-Wei Hsu ◽  
Ya-Mei Bai ◽  
...  

BackgroundResearch suggests an association between metabolic disorders, such as type 2 diabetes mellitus (T2DM), and schizophrenia. However, the risk of metabolic disorders in the unaffected siblings of patients with schizophrenia remains unclear.MethodsUsing the Taiwan National Health Insurance Research Database, 3135 unaffected siblings of schizophrenia probands and 12,540 age-/sex-matched control subjects were included and followed up to the end of 2011. Individuals who developed metabolic disorders during the follow-up period were identified.ResultsThe unaffected siblings of schizophrenia probands had a higher prevalence of T2DM (3.4% vs. 2.6%, p = 0.010) than the controls. Logistic regression analyses with the adjustment of demographic data revealed that the unaffected siblings of patients with schizophrenia were more likely to develop T2DM (odds ratio [OR]: 1.39, 95% confidence interval [CI]: 1.10–1.75) later in life compared with the control group. Moreover, only female siblings of schizophrenia probands had an increased risk of hypertension (OR: 1.47, 95% CI: 1.07–2.01) during the follow-up compared with the controls.DiscussionThe unaffected siblings, especially sisters, of schizophrenia probands had a higher prevalence of T2DM and hypertension compared with the controls. Our study revealed a familial link between schizophrenia and T2DM in a large sample. Additional studies are required to investigate the shared pathophysiology of schizophrenia and T2DM.


2015 ◽  
Vol 18 (4) ◽  
pp. 41-47
Author(s):  
Oleg G. Motovilin ◽  
Shishkova Y. Andreevna ◽  
Elena V. Surkova

Background. Over the long disease course of diabetes mellitus (DM), with its demands in terms of everyday self-management of the disease, individual psychological characteristics may be associated with both emotional well-being (WB) and glycaemic control. The former includes various types of coping strategies (CSs) of the patients, which comprise the common ways for patients to overcome difficult situations.Aim. To study the relationships between CS and both glycaemic control and emotional WB in patients with Type 1 diabetes (T1D) and Type 2 diabetes (T2D) treated with insulin.Materials and methods. The study included 84 patients with T1D and 56 patients with insulin-treated T2D [age, 22.5 ± 3.3 and 61.0 ± 8.9 years; men/women, 29/55 and 11/45; duration of DM, 11.9 ± 5.36 and 11.6 ± 6.2 years and glycated haemoglobin (HbA1c), 9.1% ± 2.2% and 9.0% ± 1.4%, respectively]. The HbA1c levels were determined in all patients. The Strategic Approach to Coping Scale constructed by S. Hobfoll was used to study CS, and emotional WB was assessed based on the severity of anxiety and depression. Further, we used the State-Trait Anxiety Inventory developed by C.D. Spielberger and adapted by Y.L. Khanin and the Center for Epidemiologic Studies Depression Scale. Only Russian validated versions of the questionnaires were used in the study.Results. In both groups of patients, ‘Assertive (Persistent) Actions’ was positively associated with emotional WB. In patients with T2D, WB increases when using ‘Cautious Action’ and ‘Social Joining’. The deterioration of emotional WB was associated with ‘Aggressive Actions’ in both groups of patients. In patients with T1D, negative WB was also associated with ‘Avoidance’, while in patients with T2D, negative WB was associated with ‘Instinctive Actions’. In patients with T1D, ‘Instinctive Action’ was associated with higher HbA1c levels. In patients with T2D, ‘Cautious Action’, ‘Avoidance’ and ‘Antisocial Action’ were associated with lower HbA1c levels.Conclusion. In patients with T1D and T2D, CSs are associated with both emotional WB and glycaemic control. Emotional WB and lower HbA1c levels are associated with ‘Assertive Action’, ‘Cautious Action’, ‘Avoidance’ and ‘Asocial Action’. Negative WB and higher HbA1c levels are associated with ‘Aggressive Action’ and ‘Instinctive Action’.


Diabetes Care ◽  
2022 ◽  
Author(s):  
Avivit Cahn ◽  
Stephen D. Wiviott ◽  
Ofri Mosenzon ◽  
Erica L. Goodrich ◽  
Sabina A. Murphy ◽  
...  

OBJECTIVE Current guidelines recommend prescribing SGLT2 inhibitors to patients with type 2 diabetes and established or at high risk for atherosclerotic cardiovascular disease (ASCVD), irrespective of HbA1c levels. We studied the association of HbA1c with cardiovascular and renal outcomes and whether the benefit of dapagliflozin varies by baseline HbA1c. RESEARCH DESIGN AND METHODS In the Dapagliflozin Effect on Cardiovascular Events trial (DECLARE-TIMI 58), 17,160 patients with type 2 diabetes were randomly assigned to dapagliflozin or placebo for a median follow-up of 4.2 years. Cardiovascular and renal outcomes by baseline HbA1c in the overall population and with dapagliflozin versus placebo in HbA1c subgroups were studied by Cox regression models. RESULTS In the overall population, higher baseline HbA1c was associated with a higher risk of cardiovascular death or hospitalization for heart failure (HHF); major adverse cardiovascular events (MACE), including cardiovascular death, myocardial infarction, and ischemic stroke; and cardiorenal outcomes (adjusted hazard ratios 1.12 [95% CI 1.06–1.19], 1.08 [1.04–1.13], and 1.17 [1.11–1.24] per 1% higher level, respectively). Elevated HbA1c was associated with a greater increased risk for MACE and cardiorenal outcomes in patients with multiple risk factors (MRF) than in established ASCVD (P-interaction = 0.0064 and 0.0093, respectively). Compared with placebo, dapagliflozin decreased the risk of cardiovascular death/HHF, HHF, and cardiorenal outcomes, with no heterogeneity by baseline HbA1c (P-interaction &gt; 0.05). CONCLUSIONS Higher HbA1c levels were associated with greater cardiovascular and renal risk, particularly in the MRF population, yet the benefits of dapagliflozin were observed in all subgroups irrespective of baseline HbA1c, including patients with HbA1c &lt;7%.


2022 ◽  
Author(s):  
Avivit Cahn ◽  
Stephen D. Wiviott ◽  
Ofri Mosenzon ◽  
Sabina A. Murphy ◽  
Erica L. Goodrich ◽  
...  

<b>Objective:</b> Current guidelines recommend prescribing SGLT-2 inhibitors to patients with type 2 diabetes and established or at high risk for atherosclerotic cardiovascular disease (ASCVD), irrespective of HbA1c levels. We studied the association of HbA1c with cardiovascular and renal outcomes and whether the benefit of dapagliflozin varies by baseline HbA1c. <p><b>Methods:</b> In the Dapagliflozin Effect on Cardiovascular Events (DECLARE)-TIMI 58 trial 17,160 patients with type 2 diabetes were randomized to dapagliflozin or placebo for a median follow up of 4.2 years. Cardiovascular and renal outcomes by baseline HbA1c in the overall population, and with dapagliflozin vs. placebo in HbA1c subgroups were studied by Cox regression models.</p> <p><b>Results:</b> In the overall population, increasing HbA1c was associated with higher risk of cardiovascular death or hospitalization for heart failure (CVD/HHF), major adverse cardiovascular events (MACE; CVD, myocardial infarction, ischemic stroke) and of the cardiorenal outcome (adjusted HR [95% CI] 1.12 [1.06-1.19], 1.08 [1.04-1.13] and 1.17 [1.11-1.24] per 1% increase respectively). Elevated HbA1c was associated with an increased risk for MACE and for the cardiorenal outcome significantly more in patients with multiple risk factors (MRF), vs. patients with established ASCVD (P-interaction 0.0064 and 0.0093 respectively). Dapagliflozin led to a decrease in the risk of CVD/HHF, HHF and the cardiorenal outcome vs. placebo with no heterogeneity by baseline HbA1c (P-interaction >0.05).</p> <p><b>Conclusions</b>: High HbA1c levels were associated with greater cardiovascular and renal risk, particularly in the MRF population, yet the benefits of dapagliflozin were observed in all subgroups irrespective of baseline HbA1c, including patients with HbA1c<7%.</p>


2010 ◽  
Vol 119 (8) ◽  
pp. 345-351 ◽  
Author(s):  
Thomas Forst ◽  
Matthias M. Weber ◽  
Mirjam Löbig ◽  
Ute Lehmann ◽  
Jürgen Müller ◽  
...  

The aim of the present study was to compare the effect of PIO (pioglitazone) or GLIM (glimepiride) on erythrocyte deformability in T2DM (Type 2 diabetes mellitus). The study covered 23 metformin-treated T2DM patients with an HbA1c (glycated haemoglobin) >6.5%. Patients were randomized to receive either PIO (15 mg, twice a day) or GLIM (1 mg, twice a day) in combination with metformin (850 mg, twice a day) for 6 months. Blood samples were taken for the measurement of fasting glucose, HbA1c, fasting insulin, intact proinsulin, adiponectin and Hct (haematocrit). In addition, the erythrocyte EI (elongation index) was measured using laser diffractoscopy. Both treatments significantly improved HbA1c levels (PIO, −0.9±1.1%; GLIM, −0.6±0.4%; both P<0.05) and resulted in comparable HbA1c levels after 6 months (PIO, 6.5±1.2%; GLIM, 6.2±0.4%) Treatment with PIO reduced fasting insulin levels (−8.7±15.8 milli-units/l; P=0.098), intact proinsulin levels (−11.8±9.5 pmol/l; P<0.05) and Hct (−1.3±2.3%; P=0.09), whereas adiponectin levels increased (8.2±4.9 μg/ml; P<0.05). No significant change in these parameters was observed during GLIM treatment. PIO improved the EI, resulting in a significant increase in EI at all physiological shear stress ranges (0.6–6.0 Pa; P<0.05). The improvement in EI correlated with the increase in adiponectin levels (r=0.74; P<0.001), and inversely with intact proinsulin levels (r=−0.47; P<0.05). This is the first study showing an improvement in EI during treatment with PIO, which was associated with an increase in adiponectin and a decrease in intact proinsulin levels, but independent of glycaemic control.


2021 ◽  
Vol 12 ◽  
Author(s):  
Chin-Ying Ray ◽  
Victor Chien-Chia Wu ◽  
Chun-Li Wang ◽  
Hui-Tzu Tu ◽  
Yu-Tung Huang ◽  
...  

Background: Dipeptidylpeptidase-4 inhibitors (DPP-4i′s) are considered to be safe for patients with type 2 diabetes mellitus (T2DM). However, little is known about drug–drug interactions between DPP-4i′s and concurrent medications.Methods: Data on patients using DPP-4i′s for T2DM during 2011–2017 were retrieved from Chang Gung Research database provided by Chang Gung Memorial Hospital. Patients were excluded if they were aged &lt;30 years or &gt;90 years; had incomplete demographic data; had insulinoma; or had records of concomitant insulin use. A generalized estimating equation–based Poisson model was employed for statistical analysis. The primary outcome was hypoglycemia events.Results: We retrieved data on a total of 97,227 patients using DPP-4i′s. After patients were excluded according to the mentioned criteria, the remaining 77,047 DPP-4i users were studied (mean age 64 ± 12 years, men 54.4%). The most common medications coprescribed with DPP4is over all person-quarters were acetaminophen, simvastatin, fluvastatin, and colchicine (all &gt;20,000 person-quarters). The combinations of a DPP-4i with bumetanide, captopril, colchicine, acetaminophen, cotrimoxazole, and pantoprazole were associated with an increased risk of hypoglycemia. Compared with the ratios observed for person-quarters of DPP-4i use alone (reference category), the adjusted prevalence ratios per 100 person-years of hypoglycemia for person-quarters of DPP-4i use in combination with bumetanide, captopril, colchicine, acetaminophen, cotrimoxazole, and pantoprazole were 2.44 (95% confidence interval [CI], 1.78–3.36), 2.97 (95% CI, 2.26–3.90), 1.87 (95% CI, 1.44–2.42), 2.83 (95% CI, 2.44–3.29), 2.27 (95% CI, 1.27–4.04), and 3.03 (95% CI, 1.96–4.68), respectively.Conclusion: Among patients taking DPP-4i′s for T2DM, concurrent use of such inhibitors with bumetanide, captopril, acetaminophen, and pantoprazole was associated with an increased risk of hypoglycemia compared with the use of DPP-4i′s alone. Physicians prescribing DPP-4i′s should consider the potential risks associated with their concomitant use with other drugs.


Author(s):  
Ming-Shun Hsieh ◽  
Sung-Yuan Hu ◽  
Chorng-Kuang How ◽  
Yi-Tzu Lee ◽  
Chen-June Seak ◽  
...  

Background Diabetic patients have an increased risk of infections; however, the association between type 2 diabetes and hospital outcomes of sepsis remains controversial when the diabetes severity is not considered. We examined this association using nationwide and hospital-based databases concomitantly. Methods The first part of this study was conducted using 2 nationwide databases: the Longitudinal Cohort of Diabetes Patients and the Longitudinal Health Insurance Database 2000. The diabetic complication burden was evaluated using the adapted Diabetes Complications Severity Index score (aDCSI score). In the second part, we used the hospital-based database with laboratory data, such as initial blood glucose and HbA1c levels, to make comparisons between surviving and dead patients with type 2 diabetes and sepsis. Results The nationwide study included 19,719 type 2 diabetic sepsis patients and an equal number of non-diabetic patients. The diabetic sepsis patients had an increased odds ratio (OR) of 1.14 (95% CI 1.1-1.19) for hospital mortality. The OR for mortality increased as the complication burden increased (diabetic sepsis patients with aDCSI scores of 0, 1, 2, 3, 4, and &ge;5 had ORs of 0.91, 0.87, 1.14, 1.25, 1.56, and 1.77 for mortality, respectively (all P&lt;0.001 and P for trend &lt;0.001)). A total of 1,054 diabetic sepsis patients were included from the hospital-based database. Initial blood glucose levels in the surviving and dead diabetic sepsis patients did not differ significantly: 273.9 &plusmn; 180.3 versus 266.1 &plusmn; 200.2 (mg/dL) (P=0.095). Moreover, the surviving diabetic sepsis patients did not have a lower HbA1c (%): 8.4 &plusmn; 2.6 versus 8.0 &plusmn; 2.5 (P=0.078). Conclusions In the case of type 2 diabetic sepsis patients, the diabetes-related complication burden is the major determinant of hospital mortality rather than the diabetes itself. Contrary to popular belief, initial blood glucose and HbA1c levels may not be as important as previously thought.


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