Diabetes & Metabolism Journal

Original Article

Clinical Diabetes & Therapeutics
Acarbose Add-on Therapy in Patients with Type 2 Diabetes Mellitus with Metformin and Sitagliptin Failure: A Multicenter, Randomized, Double-Blind, Placebo-Controlled Study: Hae Kyung Yang, Seung-Hwan Lee, Juyoung Shin, Yoon-Hee Choi, Yu-Bae Ahn, Byung-Wan Lee, Eun Jung Rhee, Kyung Wan Min, Kun-Ho Yoon; Diabetes Metab J. 2019;43(3):287-301. Published online December 20, 2018; DOI: https://doi.org/10.4093/dmj.2018.0054

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Background

We evaluated the efficacy and safety of acarbose add-on therapy in Korean patients with type 2 diabetes mellitus (T2DM) who are inadequately controlled with metformin and sitagliptin.

Methods

A total of 165 subjects were randomized to metformin and sitagliptin (Met+Sita, n=65), metformin, sitagliptin, and acarbose (Met+Sita+Acarb, n=66) and sitagliptin and acarbose (Sita+Acarb, exploratory assessment, n=34) therapy in five institutions in Korea. After 16 weeks of acarbose add-on or metformin-switch therapy, a triple combination therapy was maintained from week 16 to 24.

Results

The add-on of acarbose (Met+Sita+Acarb group) demonstrated a 0.44%±0.08% (P<0.001 vs. baseline) decrease in glycosylated hemoglobin (HbA1c) at week 16, while changes in HbA1c were insignificant in the Met+Sita group (−0.09%±0.10%, P=0.113). After 8 weeks of triple combination therapy, HbA1c levels were comparable between Met+Sita and Met+Sita+Acarb group (7.66%±0.13% vs. 7.47%±0.12%, P=0.321). Acarbose add-on therapy demonstrated suppressed glucagon secretion (area under the curve of glucagon, 4,726.17±415.80 ng·min/L vs. 3,314.38±191.63 ng·min/L, P=0.004) in the absence of excess insulin secretion during the meal tolerance tests at week 16 versus baseline. The incidence of adverse or serious adverse events was similar between two groups.

Conclusion

In conclusion, a 16-week acarbose add-on therapy to metformin and sitagliptin, effectively lowered HbA1c without significant adverse events. Acarbose might be a good choice as a third-line therapy in addition to metformin and sitagliptin in Korean subjects with T2DM who have predominant postprandial hyperglycemia and a high carbohydrate intake.

Citations

Citations to this article as recorded by

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Randomized Controlled Trials

Comparative Study about the Effects of Acarbose and Voglibose in Type 2 Diabetic Patients.: In Kyung Jeong, Jae Hoon Chung, Yong Ki Min, Myung Shik Lee, Moon Kyu Lee, Kwang Won Kim, Yun Ey Chung, Joong Yeol Park, Sung Kwan Hong, Ki Up Lee; Korean Diabetes J. 2002;26(2):134-145. Published online April 1, 2002

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Abstract PDF: BACKGROUND
Acarbose and voglibose are alpha-glucosidase inhibitors. Although different pharmacological effects and adverse abdominal events associated with the two drugs have been reported, no study directly compared acarbose and voglibose in diabetes has been undertaken. To compare the pharmacological effects and gastrointestinal adverse events between two drugs, a randomized, placebo-controlled, double-blind study was performed in type 2 diabetes patients. METHODS: The period of study was 12 weeks (observation period: 4 weeks; treatment period: 8 weeks). Fifty-three patients were randomized into two groups (the acarbose group: 24 patients; the voglibose group: 29 patients). The serum glucose, insulin, fructosamine, HbA1c, cholesterol, triglyceride and the incidence of adverse events were measured. RESULTS: 1) The reduction of glucose from before treatment to 4 weeks after treatment was significantly higher in the acarbose group, but the change before treatment and 8 weeks after treatment in the two groups was similar (p = 0.569). 2) The insulin significantly decreased after voglibose treatment (p = 0.040). 3) HbA1c level tended to decrease in voglibose group, and there was a significant decrease after acarbose treatment. However, the change in HbA1c level before and after treatment was similar between the two groups (p = 0.412). 4) The two drugs did not cause any other changes in the total, HDL-cholesterol and triglyceride. 5) The number of patients with gastrointestinal adverse events was significantly low 4 weeks after voglibose treatment (p = 0.049), but the incidence in the two groups was similar after 8 weeks (p = 0.215). CONCLUSIONS: Acarbose and voglibose significantly improved postprandial hyperglycemia in diabetes. The incidence of gastrointestinal adverse events was low 4 weeks after voglibose treatment.

The Effect of Acarbose as an Adjuvant Therapy in Sulfonylurea-Treated NIDDM Patients.: Yun Yong Lee, Geon Sang Park, Jin Seong Kim, Byeong Sool Mun, Do Joon Park, Chan Soo Shin, Kyeong Soo Park, Seong Yeon Kim, Hong Kyu Lee; Korean Diabetes J. 1997;21(4):484-492. Published online January 1, 2001

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Abstract PDF: BACKGROUND
Acarbose-an aglucosidase inhibitor-is known to have a glucose lowering effect by delaying the digestion of complex carbohydrates in the small intestine. Acarbose especially prevents the abnormally high increment of postprandial blood glucose, reduces postprandial hyperinsulinemia and probably, alleviates insulin resistance. The aim of this study is to evaluate the glucose lowering effect of acarbose as an adjunt with a sulfonylurea in the treatment of NIDDM patients who have been poorly controlled with the use of sulfonylurea alone. METHODS: Forty NIDDM patients, who were poorly controlled with sulfonylurea alone, were randomly selected frorn outpatient diabetic clinic for study. For 16 weeks, they recieved either acarbose or placebo in additian to sulfonylurea under double blind method. RESULTS: 1) The metabohc parameters measured before initiation of either treatment regimen were similiar. 2) The HbAlc in placebo group increased from 8.9% to 9.0%. In contrast, in the acarbose group, HbAlc value decreased from 9.3% to 8.1%(p<0.05). 3) Mean fasting plasma glucose and 1-h postprandial glucose levels were reduced significantly in the acarbose group(p<0.001), especially in I-h postpandial glucose level in comparison with placebo group(p <0.0001). 4) Mean fasting, 1-h postprandial insulin levels decreased with time in the acarbose group in comparison with placebo group, but the decrease was not statistically significant. 5) Lipid profiles did not change during 16weeks of treatment period. 6) Adverse effects were observed in 3 patients on acarbose and 2 patients on placebo. CONCLUSION: Acarbose can be used as an effective adjuvant therapy to sulfonylurea in NIDDM patients who are poorly controlled with sulfonylurea alone.

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