Les troubles métaboliques du glucose et des lipides chez les patients atteints de myasthénie et ses mécanismes.

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Les troubles métaboliques du glucose et des lipides chez les patients atteints de myasthénie et ses mécanismes.

Message par Pboulanger » 15 mars 2018 12:18

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Glucose and lipid metabolic disorders in myasthenia gravis patients and its mechanisms.
[Article in Chinese]
Li LJ1, Guan YZ2, Lü F, Song YW, Xu XJ, Jiang Y, Wang O, Xia WB, Xing XP, Li M.
Zhonghua Yi Xue Za Zhi. 2018 Feb 27;98(8):581-586. doi: 10.3760/cma.j.issn.0376-2491.2018.08.005.


Abstract in English, Chinese
  • Objective:

    To investigate the glucose and lipid metabolic disorders in patients with myasthenia gravis (MG) without glucocorticoid therapy, and the relationships between insulin, insulin resistance, muscle strength, serum levels of osteocalcin, 25-hydroxy vitamin D (25OHD) and glucose and lipid metabolism.
  • Methods:

    A total of 102 MG patients [(40±11) years old, 43 males and 59 females] without glucocorticoid treatment were enrolled in this cross-sectional study.

    Height, weight and the handgrip of dominant hands were measured.
    Serum levels of fasting blood glucose (FBG), 2-hour postprandial blood glucose (2 h PBG), glycosylated hemoglobin (HbA1c), fasting insulin (FINS), 2-hour postprandial insulin (2 h PINS), total cholesterol (TC), triglyceride (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C) and osteocalcin, 25OHD were detected.

    Insulin resistance was assessed using homeostasis model assessment of insulin resistance (HOMA-IR).
  • Results:

    The proportion of impaired fasting glucose or impaired glucose tolerance, type 2 diabetes, dyslipidemia, hyperinsulinemia in male and female were 30.0%, 10.0%, 50.0%, 33.3% and 17.5%, 3.5%, 27.7%, 7.1%, respectively. Serum osteocalcin levels in male and female were 2.8 (1.7, 4.4) μg/L and 2.3 (1.3, 3.9) μg/L, respectively.
    And 25OHD levels in male and female were (93.5±34.9) nmol/L and (81.0±30.5) nmol/L, respectively.

    Handgrip of male and female was (37.0±9.4) kg and (20.5±6.3) kg.

    After adjusted for age, FINS (r=0.619, P<0.001), 2 h PINS (r=0.640, P<0.001), HOMA-IR (r=0.534, P<0.001) were positively correlated with 2 h PBG, and the handgrip was negatively correlated with TC (r=-0.486, P=0.026), LDL-C (r=-0.485, P=0.026) in male.

    FINS (r=0.352, P=0.008; r=0.300, P=0.026; r=0.646, P<0.001) and 2 h PINS (r=0.278, P=0.040; r=0.518, P<0.001; r=0.382, P=0.006) and HOMA-IR (r=0.695, P<0.001; r=0.583, P<0.001; r=0.818, P<0.001) were positively correlated with FBG, 2 h PBG, HbA1c, and the handgrip were negatively correlated with FBG (r=-0.424, P=0.016), 2 h PINS (r=-0.345, P=0.034) and positively correlated with HDL-C (r=0.389, P=0.037) in female.

    There was no association between osteocalcin, 25OHD and glucose and lipid metabolism.
    Multivariate linear regression analysis also found that there were significant relationships between handgrip, insulin, insulin resistance levels and glucose and lipid metabolic disorders.
  • Conclusion:

    There was a high proportion of glucose and lipid metabolic disorders in MG patients without glucocorticoid treatment, and the mechanism may be related to insulin resistance induced by muscle weakness.
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