Table 2 Analytical studies of acylcarnitines in humans with and without T2D

From: Role of carnitine and its derivatives in the development and management of type 2 diabetes

Participant characteristics

Sample type

Affected acylcarnitine species

Affected glycemic and lipid parameters

Ref

Twelve lean volunteers (3M/9F), age:47 ± 7, BMI:23.9 ± 1.8

14 obese nondiabetic v. (3M/11F), age:43 ± 7, BMI:34.3 ± 3.1

10 T2D patients (5M/5F), age:45±10, BMI:34.2±2.5

Plasma

T2D vs control:

FC↑, C3↑, C4↑, C5↑, C6↑, C10:1↑

(LCAC) C14:1↑, C16↑, C18↑, C18:1↑

(OH) C4OH↑, C5OH↑, C6OH↑, C14OH↑, C16OH↑

FPG↑, HbA1c

23

Eighteen DM patient (6M/12F), 14 controls (6M/8F)

Urine

FC↓, MCAC↑, (C7↑, C8↑, C12↑C14↑)

LCAC↑ (C16↑)

n.m.

49

Forty four T2D patient (44F), aged 19–87y

12 nondiabetic control (12F), aged 21–69y

Plama

AC↑, AC/FC↑, C2↑,

(MCAC) C6↑, C8↑, C10↑, (LCAC)C14↑, C18:1↑

C3↓

FPG↑, HbA1c

50

Seventy four obese volunteers (22M/52F), aged 46–60 y, BMI:36.6

67 lean volunteers (29M/38F), aged 38–60y, BMI:23.2

Serum

C3↑, C5↑, C6↑, C8:1↑

FFA↑, TG↑, HDL-C↓, pyruvate↑, lactate↑

51

Twenty patients with normal glucose tolerance (9M/11F), mean age: 48y

20 pre-DM patients (11M/9F), mean age: 51y

21 newly diagnosed T2D patients (8M/13F), mean age: 49y

Serum

T2D vs control:

C16↑, C16-OH↑, C20↑, C22↑, C24↑

FPG↑, HbA1c↑, FINS↑

IR↑, TC↑

52

Forty nine T1D patients (26M/23F), aged 19–64y, BMI: 25.7

38 T2D patients (20M/18F), aged 37–57y, BMI: 29.9

38 MetS patients (19M/19F), aged 34–70y, BMI: 33.8

40 healthy controls (20M/20F), aged 28–71y, BMI: 23.1

Serum

T2D vs control:

C2↑, C3↑, C4↑, C5↑, C10:1↓, C12↓, C18:2↓,

SCAC↑, MCAC↓, LCAC ↔ 

n.m.

53

  1. T2D type 2 diabetes, DM diabetes, T1D type 1 diabetes, MetS metabolic syndrome, FPG fasting plasma glucose, FINS fasting insulin, HbA 1c hemoglobin A1c, FFA free fatty acid, TG triglyceride, HDL-C high-density lipoprotein cholesterol, IR insulin resistance, TC total cholesterol, FC free carnitine, AC total acylcarnitine, SCAC short-chain acylcarnitine, MCAC medium-chain acylcarnitine, LCAC long-chain acylcarnitine, n.m. not mentioned