PMID- 21854404 OWN - NLM STAT- MEDLINE DCOM- 20120817 LR - 20120423 IS - 1365-2265 (Electronic) IS - 0300-0664 (Linking) VI - 76 IP - 6 DP - 2012 Jun TI - Glucose fluctuations in subjects with normal glucose tolerance, impaired glucose regulation and newly diagnosed type 2 diabetes mellitus. PG - 810-5 LID - 10.1111/j.1365-2265.2011.04205.x [doi] AB - OBJECTIVE: Glycemic variability is poorly studied in the nondiabetic individuals and newly diagnosed patients with type 2 diabetes. The aim of the study is to investigate the characteristics of glucose fluctuations in subjects with normal glucose tolerance (NGT), impaired glucose regulation (IGR) and newly diagnosed, drug-naive type 2 diabetes mellitus (DM-2). DESIGN AND PATIENTS: This is a cross-sectional study of three groups including 53 subjects with IGR, 56 DM-2 patients and 53 NGT individuals. Monitoring by a continuous glucose monitoring system (CGMS((R)) System Gold()) was performed for three consecutive days. MEASUREMENTS: Mean blood glucose (MBG), standard deviation of MBG (SDBG), largest amplitude of glycemic excursions (LAGE) and mean amplitude of glycemic excursions (MAGE) were calculated to estimate intraday blood glucose variability. Interday variability of glucose was evaluated by absolute means of daily differences (MODD). Postprandial glucose excursion (PPGE) was calculated to assess the influence of meals on glucose fluctuation. RESULTS: Twenty-two percentage of NGT and 33.9% of IGR individuals experienced blood glucose >/= 11.1 mmol/l; 49.1% of NGT, 50.9% of IGR and 30.8% of DM-2 participants had hypoglycemic episodes (CGM values <3.9 mmol/l). The IGR and DM-2 groups had greater SDBG (P = 0.010 and P < 0.001), LAGE (P = 0.014 and P < 0.001) and MAGE (P = 0.044 and P < 0.001) compared with the NGT group. Significantly greater MODD and PPGEs were found in the DM-2 groups than in the IGR and NGT groups (P < 0.001). The DM-2 patients had higher 72-MBG and glucose levels overnight than the NGT and IGR subjects (P < 0.001). In the patients with diabetes, MAGE was positively associated with MODD (r = 0.558, P < 0.001) and PPGEs (r = 0.738-0.843, P < 0.001). CONCLUSIONS: Glucose variability is present to an increasing degree from NGT to IGR and IGR to DM-2. Compared with the NGT individuals, the IGR and DM-2 subjects show more predominant intraday glucose fluctuations. The DM-2 patients demonstrate increased PPGEs, higher glucose levels overnight and greater interday fluctuations. CI - (c) 2012 Blackwell Publishing Ltd. FAU - Wang, Chun AU - Wang C AD - Department of Endocrinology and Metabolism, West China Hospital, Sichuan University, Sichuan, China. FAU - Lv, Lifang AU - Lv L FAU - Yang, Yanzhi AU - Yang Y FAU - Chen, Dawei AU - Chen D FAU - Liu, Guanjian AU - Liu G FAU - Chen, Lihong AU - Chen L FAU - Song, Yuanxia AU - Song Y FAU - He, Liping AU - He L FAU - Li, Xiujun AU - Li X FAU - Tian, Haoming AU - Tian H FAU - Jia, Weiping AU - Jia W FAU - Ran, Xingwu AU - Ran X LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Clin Endocrinol (Oxf) JT - Clinical endocrinology JID - 0346653 RN - 0 (Blood Glucose) SB - IM MH - Adult MH - Blood Glucose/analysis/*metabolism MH - Cross-Sectional Studies MH - Diabetes Mellitus, Type 2/*blood MH - Female MH - Glucose Intolerance/*blood MH - Glucose Tolerance Test MH - Humans MH - Male MH - Middle Aged MH - Postprandial Period/physiology EDAT- 2011/08/23 06:00 MHDA- 2012/08/18 06:00 CRDT- 2011/08/23 06:00 PHST- 2011/08/23 06:00 [entrez] PHST- 2011/08/23 06:00 [pubmed] PHST- 2012/08/18 06:00 [medline] AID - 10.1111/j.1365-2265.2011.04205.x [doi] PST - ppublish SO - Clin Endocrinol (Oxf). 2012 Jun;76(6):810-5. doi: 10.1111/j.1365-2265.2011.04205.x.