Aims/Introduction: We carried out a cross-sectional study of people with type 2 diabetes mellitus to elucidate the association between sleep duration and food intake. Materials and Methods: Overall, 2,887 participants with type 2 diabetes mellitus (mean age 63.0 years; 61.1% men; mean glycated hemoglobin level 7.5%) were included in this study. The participants' self-reported dietary habits and sleep duration were evaluated using a brief self-administered dietary history questionnaire and Pittsburgh Sleep Quality Index, respectively. The participants were categorized into the following four groups based on sleep duration: <6, 6-6.9, 7-7.9 (reference) and ≥8 h. Results: No significant differences were observed between the groups regarding energy intake (kcal/day), absolute intake (g/day) or relative intake (% energy) of carbohydrates, total fat, proteins and fibers. However, confectionery intake was higher in the <6 h group and lower in the ≥8 h group than in the reference group after adjustment for confounding factors. In multivariate analysis, sleep durations <6 h and ≥8 h significantly correlated with increased (95% confidence interval 0.55 to 3.6; P = 0.0078) and decreased (95% confidence interval -4.0 to -0.32; P = 0.021) confectionery intake, respectively. Confectionery intake was positively correlated with female sex, glycated hemoglobin level and dyslipidemia, whereas it was negatively correlated with alcohol consumption and current smoking status. Conclusions: Short sleep duration is associated with high confectionery intake in people with type 2 diabetes mellitus; this might disturb their glycemic control. Therefore, short sleepers with type 2 diabetes mellitus could improve their glycemic control by avoiding confectionery intake and maintaining adequate sleep duration.
Introduction Since the Medtronic 770G hybrid closed-loop (HCL) system was approved in Japan in 2022, we evaluated the effects of the HCL system on glycemic control and psychological aspects in persons with type 1 diabetes mellitus (T1DM) treated with the Medtronic 640G predictive low glucose suspend (PLGS) system. Materials and Methods In a 3-month prospective observational study, 21 people with T1DM (mean age: 48.7 years; male: 5 people) treated with PLGS system were enrolled. The participants switched to the 770G system, where the algorithm maintains glucose levels at 120 mg/dl, and in 3 months the percentage of time in blood glucose range (TIR) 70-180 mg/dl and glycated hemoglobin level (HbA1c) were evaluated. Self-reported questionnaires were administered at baseline and in 3 months to assess their satisfaction, emotional distress, and quality of life (QoL), using Diabetes treatment satisfaction questionnaire status (DTSQs), Problem area in diabetes scale (PAID), and Diabetes therapy-related QoL (DTR-QoL), respectively. Results In 3 months, TIR increased from 63.2 ± 13.7% to 72.7 ± 11.1% (mean ± standard deviation) (P < 0.0005), whereas time above blood glucose range (TAR) 181-250 mg/dl decreased from 26.9 ± 9.1% to 19.7 ± 7.2 % (P < 0.0005). TAR > 250 mg/dl, time below blood glucose range (TBR) 54-69 mg/dl and TBR < 54 mg/dl did not differ significantly. HbA1c decreased from 7.7 ± 1.0% to 7.2 ± 0.8% (P = 0.0013). There were no significant changes in DTSQs, PAID, and DTR-QOL in 3 months (DTSQs 26.7 ± 6.0 compared with baseline 26.9 ± 4.0, P = 0.87, PAID 52.3 ± 17.9 compared with baseline 54.0 ± 16.3, P = 0.48, DTR-QoL 50.1 ± 19.0 compared with baseline 47.0 ± 16.9, P = 0.38). Conclusion HCL system could increase TIR, compared with PLGS system, without worsening treatment satisfaction, emotional distress, and QoL. This study suggested HCL system is useful for Japanese people with T1DM. Disclosure T. Akiyama: None. K. Orime: None. T. Yamakawa: None.
Metformin monotherapy as first-line treatment for patients with type 2 diabetes (T2D) has been shown to effectively improve blood glucose levels and motivation to undergo treatment and prevent complications. However, no studies have reported its effect when combined with other drugs or compared the effect based on administration time. This study aimed to investigate the effect of metformin administration in Japanese patients with T2D, examine how the introduction line impacts the effect of metformin, and examine the characteristics of patients demonstrating improved blood glucose levels. Data on characteristics of patients who were newly prescribed metformin with no shifting of hypoglycemic agents in the subsequent 24-week observation period, and their age [mean, 56.8 years], body mass index [mean, 27.5 kg/m 2 ], glycated hemoglobin [HbA1c] [mean, 8.1%], and duration of diabetes [mean, 3.0 years] were obtained from the medical records of 201 patients. The changes in HbA1c by introduction line after 24 weeks were -1.59%, -0.91%, -0.89%, and -0.65% in the first, second, third, and fourth induction lines, respectively; earlier introduction more significantly improved blood glucose. The factors significantly associated with HbA1c changes were early introduction, high baseline HbA1c, high estimated glomerular filtration rate, decreased insulin secretion, short estimated duration of diabetes, and increased metformin dose. Furthermore, factors contributing to the largest HbA1c improvement by metformin were high baseline HbA1c and early administration. Metformin is expected to lower blood glucose levels in Japanese patients with T2D, even in those with decreased insulin secretion, due to its early introduction as a first-line drug.
Previous reports indicated the therapeutic effect of chronic continuous positive airway pressure (CPAP) therapy on cardiac hypertrophy due to sleep apnea syndrome. However, little is known for cases involving diabetic complications. This retrospective observational study examined the effects of CPAP therapy on left ventricular hypertrophy (LVH) in patients with obstructive sleep apnea syndrome (OSAS) and type 2 diabetes mellitus (T2DM). For all cases, the observation period was 3 years from the time when the patient was introduced to CPAP therapy. Overall, 123 patients were divided into a good CPAP group (CPAP ≥4 h/day, n = 63) and non-adherence group (CPAP <4 h/day, n = 60). The mean CPAP usage times were 5.58 ± 1.23 and 1.03 ± 1.17 h/day in the good CPAP and non-adherence groups, respectively. Regression tendencies of the thickness of the left ventricular posterior (-0.30 ± 1.19 mm) and interventricular septal walls (-0.48 ± 1.22 mm) were observed in the good CPAP group. Hypertrophic tendencies of the left ventricular posterior wall (+0.59 ± 1.44 mm) and interventricular septal wall thickness (+0.59 ± 1.43) were observed in the non-adherence group. Left ventricular posterior wall thickness (odds ratio, (coefficient: -0.254, p = 0.0376) and interventricular septal wall thickness (coefficient: -0.426, p = 0.0006) were more likely to be greater in the non-adherence group than in the good CPAP group. Patients in the non-adherence group with an apnea hypopnea index ≥30 had increased left ventricular posterior wall thickness (coefficient: -0.263, p = 0.0673) and interventricular septal wall thickness (coefficient: -0.450, p = 0.0011). In conclusion, appropriate CPAP therapy is an effective treatment for LVH in patients with T2DM and OSAS, especially for severe cases.
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