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- W2945296105 abstract "Background & aims An inability to respond to nutrition could be implicated in low muscle mass in Crohn's disease. We aim to determine skeletal muscle metabolic response to feeding in Crohn's disease and healthy volunteers. Methods Twenty asymptomatic Crohn's disease participants (15.6 ± 0.5 yrs; BMI 20.6 ± 0.9 kg/m2); 9 with active disease (faecal calprotectin, 808 ± 225 ug/g and C-reactive protein, 2.2 ± 1.2 mg/dl), 11 in deep remission (faecal calprotectin, 61 ± 12 ug/g and C-reactive protein, 0.3 ± 0.2 mg/dl) and 9 matched healthy volunteers (16.0 ± 0.6 yrs; BMI 20.7 ± 0.6 kg/m2) were recruited. Participants had a dual energy X-ray absorptiometry scan, handgrip dynamometer test, wore a pedometer and completed a food diary. Arterialised hand and venous forearm blood samples were collected concurrently and brachial artery blood flow measured at baseline and every 20 min for 2 hrs after the ingestion of a standardised liquid meal. Net balance of branched chain amino acids (BCAA) and glucose were derived. Results Controls had a positive mean BCAA balance. CD participants had an initial anabolic response to the meal, with increasing BCAA balance between t = 0 & t = 20, but returned to negative by t = 60. This was associated with reduced FFM z-scores in CD but not with insulin resistance or disease activity. Exploratory analyses suggest that negative postprandial BCAA response seen in CD is predominant in males (p = 0.049), with associated lower appendicular muscle mass (p = 0.034), higher muscle fatigue (p = 0.014) and reduced protein intake (p = 0.026). Conclusions The inability to sustain a positive protein balance postprandially could provide an explanation for the reduced muscle mass seen in CD. Further mechanistic studies will be needed to confirm these findings." @default.
- W2945296105 created "2019-05-29" @default.
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- W2945296105 date "2020-04-01" @default.
- W2945296105 modified "2023-10-13" @default.
- W2945296105 title "Reduced skeletal muscle protein balance in paediatric Crohn's disease" @default.
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- W2945296105 doi "https://doi.org/10.1016/j.clnu.2019.05.017" @default.
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