Research on Potential Biomarkers of Prediabetes and Diabetes Based on MALDI-TOF MS Platform.

Summary

Through the MALDI-TOF MS platform, explore the proteomics and peptidomics differences of fasting serum/plasma and urine between non pregnant people with normal glucose tolerance test and prediabetes /diabetes patients, pregnant people with normal glucose tolerance test and pregnant diabetes patients respectively; To explore the role of its proteomics and peptidomics differences in the diagnosis of prediabetes and diabetes, and to establish a new method of differential diagnosis by using the omics data and key characteristic peaks to find potential new diagnostic markers.

Eligibility

Inclusion Criteria:

1. Inclusion criteria for cases:

   Non pregnant people: the remaining fasting serum/plasma and urine samples of prediabetes/diabetes patients (prediabetes: IFG: FPG 6.1-6.9mmol/L, Blood glucose 2h after meal\<7.8mmol/L（WHO）; IGT: FPG\<7.0mmol/L, Blood glucose 2h after meal 7.8-11.1mmol/L（WHO）; diabetes: Typical symptoms of diabetes, FPG \>= 7.0mmol/L or 75g OGTT 2h blood glucose \>= 11.1mmol/L).

   Pregnant people: the remaining fasting serum/plasma and urine samples of gestational diabetes patients (75g OGTT test FPG \>= 5.1mmol/L or 1h blood glucose \>= 10.0mmol/L or 2h blood glucose \>= 8.5mmol/L（IADPSG; ADA)).
2. Inclusion criteria of the controls were as follows:

Non pregnant people: the remaining fasting serum/plasma and urine samples of normal population for glucose tolerance test (FPG 3.9-6.1mmol/L,75g OGTT test 1h blood glucose 6.7-11.1mmol/L,75g OGTT test 2h blood glucose 3.6-7.8mmol/L).

Pregnant people: the remaining fasting serum/plasma and urine samples of people who do not meet the diagnostic criteria for gestational diabetes (3.9\<=75g OGTT test FPG\<5.1mmol/L,6.7 \<= 1h blood glucose\<10.0mmol/L,3.6\<=2h blood glucose\<8.5mmol/L).

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Exclusion Criteria:

Common exclusion criteria for cases and control were as follows: The sample volume of serum/plasma/urine is less than 300ul; Improper storage of samples or repeated freezing and thawing; The serum /plasma has obvious hemolysis, lipemia or jaundice.

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Conditions5

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