High performance liquid chromatography (HPLC) is currently the mainstream technology for detecting hemoglobin. Glycated hemoglobin (HbA1c) is a gold indicator for diagnosing diabetes, however, the accuracy of HbA1c test is affected by thalassemia factor hemoglobin F (HbF)/hemoglobin A2 (HbA2) and variant hemoglobin during HPLC analysis. In this study, a new anti-interference hemoglobin analysis system of HPLC is proposed. In this system, the high-pressure three-gradient elution method was improved, and the particle size and sieve plate aperture in the high-pressure chromatography column and the structure of the double-plunger reciprocating series high-pressure pump were optimized. The system could diagnose both HbA1c and thalassemia factor HbF/HbA2 and variant hemoglobin, and the performance of the system was anti-interference and stable. It is expected to achieve industrialization. In this study, the HbA1c and thalassemia factor HbF/HbA2 detection performance was compared between this system and the world's first-line brand products such as Tosoh G8, Bio-Rad Ⅶ and D10 glycosylated hemoglobin analysis system. The results showed that the linear correlation between this system and the world-class system was good. The system is the first domestic hemoglobin analysis system by HPLC for screening of HbA1c and thalassemia factor HbF/HbA2 rapidly and accurately.
Chromatography, High Pressure Liquid ; Fetal Hemoglobin/analysis* ; Glycated Hemoglobin A/analysis* ; Hemoglobin A2/analysis* ; Hemoglobins

Objective: To compare the effects of different hemolytic diseases on the level of glycosylated hemoglobin (HbA(1c)) to further explore the relationship between HbA(1c) and laboratory indexes to disclose implications of HbA(1c) in hemolytic diseases. Methods: The distribution of 192 decreased HbA(1c) cases in 4 categories of hemolytic diseases was analyzed. Laboratory indexes related to hemolysis were tested and analyzed in each kind of disease, and relationship between laboratory indexes and HbA(1)c was statistically explored. Results: Diagnoses of decreased HbA(1c) cases mainly included erythrocyte membranopathies (88 cases), immunohemolytic anemia (72 cases), hemoglobinopathy (4 cases) and erythrocyte enzymopathy (5 cases). The distribution of HbA(2) and normal HbF subjects in immunohemolytic anemia and hemoglobinopathy was significantly different from those of HbA(2) and / or abnormal HbF subjects (41.7% vs 22.0%, χ(2)=5.574, P=0.018; 0.7% vs 7.3%, P=0.031). Compared with non-hemolytic disease patients, those who suffered from 4 categories of hemolytic diseases showed lower HbA(1c) level and higher reticulocyte percentage (Ret), indirect bilirubin (IBIL) and free hemoglobin (F-Hb). Different levels of Ret, reticulocyte hemoglobin content (Ret-He), mean corpuscular volume (MCV), IBIL and F-Hb among the 4 kinds of diseases were observed, but the causes of the differences were not the same. HbA(1c) was negatively correlated with other laboratory indexes in erythrocyte membranopathies and immunohemolytic anemia. Conclusions: Hemolytic disease resulted in false lower HbA(1c), but impact of difference on HbA1c between different diseases was not significant. HbA(1c) was closely connected to laboratory indexes related to hemolysis, which might have potential implications for hemolytic diseases such as erythrocyte membranopathies and immunohemolytic anemia.
Data Analysis ; Erythrocytes ; Glycated Hemoglobin ; Hemoglobinopathies ; Hemolysis ; Humans

Glycated haemoglobins are haemoglobins with an attached sugar moiety. They constitute the HbA1 fraction of the adult haemoglobin HbA. HbA1c is the predominant fraction of HbA1 and gives an estimate of the blood sugar levels of an individual over the last three months. It has been observed that an HbA1c value of less than seven percent reduces the microvascular complications in diabetic patients. However, HbA1c is not affected by blood sugar levels alone. Apart from blood sugar, there are other factors that affect HbA1c. This article reviews in detail the structure, formation, methods of measurement, factors affecting HbA1c levels and their clinical significance.
Blood Glucose ; metabolism ; Diabetes Mellitus ; metabolism ; physiopathology ; Glycated Hemoglobin A ; analysis ; metabolism ; Humans

OBJECTIVE: To compare the clinical efficacy of initial periodontal therapy in periodontitis patients with or without type 2 diabetes mellitus and its correlation with white blood cell counts. METHODS: In this study, 32 chronic periodontitis patients without systemic disease (CP group) and 27 chronic periodontitis patients with type 2 diabetes mellitus (CP+DM group) were enrolled. At admission, all the patients went through periodontal examination and fasting blood examination(baseline). Probing depth (PD), attachment loss (AL), bleeding index (BI), plaque index (PLI), white blood cells (WBC) counts and fasting blood glucose (FBG) were recorded respectively, while hemoglobin A1c (HbA1c) was recorded only in CP+DM group. After that, initial periodontal therapy was performed. All the tests were repeated 3 and 6 months after treatment. The changes of periodontal clinical indexes and WBC levels were compared between the two groups before and after treatment, and the correlation between WBC and periodontal clinical indexes and glucose metabolism indexes were analyzed by generalized linear mixed model. RESULTS: At baseline, the periodontal inflammation and destruction were similar in CP and CP+DM group, but the WBC level was significantly higher in CP+DM groups [(6.01±1.26)×10⁹/L vs. (7.14±1.99)×10⁹/L, P=0.01]. After 3 and 6 months of initial periodontal therapy, the mean PD, AL, BI, and PLI in CP+DM and CP groups were significantly lower than the baseline, and the PD in CP+DM group was further decreased by 6 months compared with 3 months [(3.33±0.62) mm vs. (3.61±0.60) mm, P < 0.05]. However, none of these periodontal indexes showed significant difference between the two groups by 3 or 6 months. In CP+DM group, HbA1c at 3 months and 6 months were significantly lower than the baseline [(7.09±0.79)% vs. (7.64±1.16)%, P < 0.05; (7.06±0.78)% vs. (7.64±1.16)%, P < 0.05], and FBG was significantly lower than the baseline by 6 months [(7.35±1.14) mmol/L vs. (8.40±1.43) mmol/L, P < 0.05]. The WBC level in CP group was significantly lower than the baseline level by 3 months [(5.35±1.37)×10⁹/L vs. (6.01±1.26)×10⁹/L, P < 0.05], while that in CP+DM group was significantly lower than the baseline level by 6 months [(6.00±1.37)×10⁹/L vs. (7.14±1.99)×10⁹/L, P < 0.05]. The analysis of genera-lized linear mixed model showed that WBC level was significantly positively correlated with PD and FBG (P < 0.05). CONCLUSION Initial periodontal therapy can effectively improve the periodontal clinical status of patients with or without type 2 diabetes mellitus, and have benefits on glycemic control in diabetic patients. However, the response of periodontal indexes and WBC level to initial therapy were relatively delayed in diabetic patients. WBC plays an important role in the correlation between diabetes mellitus and periodontitis.
Chronic Periodontitis/therapy* ; Diabetes Mellitus, Type 2/complications* ; Glycated Hemoglobin A/analysis* ; Humans ; Leukocytes/chemistry* ; Periodontal Index

OBJECTIVES: To determine the association between glycosylated hemoglobin (HbA1c) and ambulatory blood pressure or heart rate in hypertensive patients. METHODS: A total of 585 patients, who performed ambulatory blood pressure monitoring (ABPM) from September 2018 to April 2019 in Xiangya Hospital, Central South University, were enrolled and assigned into 2 groups (470 in a hypertensive group and 115 in a normal group). HbA1c levels were compared. According to the HbA1c level, the hypertensive group was divided into 2 subgroups: A high HbA1c group (HbA1c≥6.1%, RESULTS: The hypertensive group had higher HbA1c level than the normal group [(6.1±1.3)% vs (5.1±1.7)%, CONCLUSIONS In hypertensive patients, HbA1c is positively correlated with ambulate blood pressure, blood pressure load, and heart rate, and it has no correlation with blood pressure variability, heart rate variability, or morning blood pressure.
Blood Pressure ; Blood Pressure Monitoring, Ambulatory ; Glycated Hemoglobin A/analysis* ; Heart Rate ; Humans ; Hypertension

Good glycaemic control is important in preventing the acute and long-term complications of diabetes mellitus. We assessed long-term glycaemic control using glycosylated haemoglobins in 83 diabetic patients, of mean age 47 years and of mean known duration 4.5 years, attending Port Moresby General Hospital over a one-year period. Significant improvement in glycaemic control was observed in only 11 (13%) of the patients. Glycaemic control worsened in 13 (16%) and no change was observed in the remainder (71%). Mean glycosylated haemoglobin and fasting plasma glucose levels were similar at the beginning and end of the study period. Over a one-year period 53 patients (64%) exhibited poor control with mean glycosylated haemoglobin levels exceeding 10%. Among the 19 newly diagnosed diabetic patients (23% of the total) glycaemic control improved in only 2 (11%). Glycaemic control was not influenced by sex, treatment, obesity or duration of diabetes. The demonstration of poor metabolic control in the majority of patients suggests that urgent measures are needed to reevaluate the management of diabetic patients, particularly with respect to education and diet. This may improve the poor survival rates reported in diabetic patients from Papua New Guinea.
Diabetes Mellitus, Type 1 - blood ; Diabetes Mellitus, Type 1 - drug therapy ; Glycated Hemoglobin - analysis ; Human

OBJECTIVETo observe the value of HbA(1)c level evaluating the total daily basal insulin dose by continuous subcutaneous insulin infusion (CSII) in 268 patients with type 2 diabetes mellitus.

METHODS5-point capillary blood glucose was monitored in pre- and post-CSII and the insulin dose which could stabilize blood glucose was defined as the total daily dose of insulin, including basal and bolus total dose. Correlation between HbA(1)c level and total daily dose of insulin in patients with type 2 diabetes mellitus was analyzed. Correlation between HbA(1)c level and 5-point capillary blood glucose was also analyzed.

RESULTSObvious correlation was observed between HbA(1)c level and the basal total daily dose of insulin if HbA(1)c was more than 9.3% (r=0.635, P<0.05). The average of 5-point capillary blood glucose was best correlated with HbA(1)c and fasting blood glucose next best.

CONCLUSIONHbA(1)c level can forecast basal total daily dose of insulin in CSII.

Aged ; Aged, 80 and over ; Blood Glucose ; analysis ; Female ; Glycated Hemoglobin A ; analysis ; Humans ; Insulin ; administration & dosage ; Male ; Middle Aged

OBJECTIVE: To establish an interference mode of group counseling for diabetic patients with depression and to evaluate the effectiveness of this mode on depression, treatment compliance and blood sugar level in the patients.
 METHODS: One hundred diabetic patients with depression were randomly divided into a counseling group and a control group (n=50 per group). Self-Rating Depression Scale (SDS) was applied to all the patients. The interference mode of group counseling was established through literature review, expert consultation or interview. The counseling group received counseling for 8 times within 2 months.
 RESULTS: There was a significant difference in the SDS scores at 0, 3, 6 or 12 months after the intervention between the 2 groups (P<0.001). For the counseling group, there was a significant difference in the SDS scores between pre-intervention and 3, 6 or 12 months after intervention (P<0.001). However, there was no significant difference in the SDS scores between any two time points after the intervention (P>0.05). There was a significant difference in the compliance between any two time points after the intervention (P<0.05). Fasting blood glucose (FBG), 2 h postprandial blood glucose (2hPG) or glycosylated hemoglobin (HbA1c) was significantly different at any two time points after the intervention (P<0.05).
 CONCLUSION Group counseling can improve depression, compliance and blood sugar control in the diabetic patients.
Blood Glucose ; analysis ; Counseling ; Depression ; therapy ; Diabetes Mellitus, Type 2 ; psychology ; therapy ; Glycated Hemoglobin A ; analysis ; Humans ; Patient Compliance ; Psychotherapy, Group

OBJECTIVETo investigate the incidence of diabetic ketoacidosis (DKA) in children with newly diagnosed type 1 diabetes.

METHODSA retrospective analysis was performed for the clinical data of 224 children with newly diagnosed type 1 diabetes, and according to the presence or absence of DKA, these children were divided into DKA group and non-DKA group, with 112 children in each group. The DKA group was further divided into ≥5-year group (65 children) and <5-year group (47 children), and according to the blood gas parameters, this group was divided into mild group (26 children), moderate group (29 children), and severe group (57 children). The factors influencing the development of DKA were analyzed, as well as the clinical and laboratory features of DKA children with different ages.

RESULTSThe most common symptoms in these 224 children with type 1 diabetes were polydipsia (86.2%), polyuria (78.6%), and weight loss (57.1%). Compared with the non-DKA group, the DKA group had a significantly higher percentage of children who were aged <5 years, who had low family income, or whose parents had an educational level of senior high school or below. The DKA group had significantly higher levels of random blood glucose and HbA1C and significantly lower levels of pH, HCO3, and C-peptide than the non-DKA group (P<0.05). There was no significant difference in the percentage of children with severe DKA between the ≥5-year group and the <5-year group (P>0.05). Compared with the <5-year group, the ≥5-year group sufferred from symptoms for a significantly prolonged period, and had a significantly lower level of random blood glucose and significantly higher levels of HbA1C and C-peptide (P<0.05).

CONCLUSIONSDKA has a high incidence rate in children with type 1 diabetes, and the development of DKA is associated with age, parents' educational level, and family income.

Adolescent ; Child ; Diabetes Mellitus, Type 1 ; complications ; Diabetic Ketoacidosis ; epidemiology ; Female ; Glycated Hemoglobin A ; analysis ; Humans ; Male ; Retrospective Studies

Blood Glucose ; China ; Diabetes Mellitus, Type 2/drug therapy* ; Glycated Hemoglobin A/analysis* ; Glycemic Control ; Humans ; Hypoglycemic Agents/therapeutic use*