Gastrointestinal hormones are involved in regulation of glucose metabolism and satiety. We tested the acute effect of meal composition on these hormones in three population groups. A randomized crossover design was used to examine the effects of two energy- and macronutrient-matched meals: a processed-meat and cheese (M-meal) and a vegan meal with tofu (V-meal) on gastrointestinal hormones, and satiety in men with type 2 diabetes (T2D, n = 20), obese men (O, n = 20), and healthy men (H, n = 20). Plasma concentrations of glucagon-like peptide -1 (GLP-1), amylin, and peptide YY (PYY) were determined at 0, 30, 60, 120 and 180 min. Visual analogue scale was used to assess satiety. We used repeated-measures Analysis of variance (ANOVA) for statistical analysis. Postprandial secretion of GLP-1 increased after the V-meal in T2D (by 30.5%; 95%CI 21.2 to 40.7%; p < 0.001) and H (by 15.8%; 95%CI 8.6 to 23.5%; p = 0.01). Postprandial plasma concentrations of amylin increased in in all groups after the V-meal: by 15.7% in T2D (95%CI 11.8 to 19.6%; p < 0.001); by 11.5% in O (95%CI 7.8 to 15.3%; p = 0.03); and by 13.8% in H (95%CI 8.4 to 19.5%; p < 0.001). An increase in postprandial values of PYY after the V-meal was significant only in H (by 18.9%; 95%CI 7.5 to 31.3%; p = 0.03). Satiety was greater in all participants after the V-meal: by 9% in T2D (95%CI 4.4 to 13.6%; p = 0.004); by 18.7% in O (95%CI 12.8 to 24.6%; p < 0.001); and by 25% in H (95%CI 18.2 to 31.7%; p < 0.001). Our results indicate there is an increase in gut hormones and satiety, following consumption of a single plant-based meal with tofu when compared with an energy- and macronutrient-matched processed-meat meat and cheese meal, in healthy, obese and diabetic men.

• Klíčová slova
• gastrointestinal hormones, nutrition, plant-based, satiety, type 2 diabetes,
• MeSH
• cholesterol krev   MeSH
• diabetes mellitus 2. typu krev   MeSH
• dieta vegetariánská * MeSH
• dietní proteiny aplikace a dávkování   MeSH
• dietní sacharidy aplikace a dávkování   MeSH
• dietní tuky aplikace a dávkování   MeSH
• dospělí MeSH
• gastrointestinální hormony krev   MeSH
• glykovaný hemoglobin metabolismus   MeSH
• index tělesné hmotnosti MeSH
• inzulin krev   MeSH
• jídla * MeSH
• klinické křížové studie MeSH
• krevní glukóza metabolismus   MeSH
• lidé středního věku MeSH
• lidé MeSH
• masné výrobky MeSH
• obezita krev   MeSH
• postprandiální období MeSH
• senioři MeSH
• triglyceridy krev   MeSH
• uspokojení potřeb * MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• Publikační typ
• časopisecké články MeSH
• randomizované kontrolované studie MeSH
• Názvy látek
• cholesterol MeSH
• dietní proteiny MeSH
• dietní sacharidy MeSH
• dietní tuky MeSH
• gastrointestinální hormony MeSH
• glykovaný hemoglobin MeSH
• inzulin MeSH
• krevní glukóza MeSH
• triglyceridy MeSH

BACKGROUND: Appetite and gastrointestinal hormones (GIHs) participate in energy homeostasis, feeding behavior and regulation of body weight. We demonstrated previously the superior effect of a hypocaloric diet regimen with lower meal frequency (B2) on body weight, hepatic fat content, insulin sensitivity and feelings of hunger compared to the same diet divided into six smaller meals a day (A6). Studies with isoenergetic diet regimens indicate that lower meal frequency should also have an effect on fasting and postprandial responses of GIHs. The aim of this secondary analysis was to explore the effect of two hypocaloric diet regimens on fasting levels of appetite and GIHs and on their postprandial responses after a standard meal. It was hypothesized that lower meal frequency in a reduced-energy regimen leading to greater body weight reduction and reduced hunger would be associated with decreased plasma concentrations of GIHs: gastric inhibitory peptide (GIP), glucagon-like peptide-1(GLP-1), peptide YY(PYY), pancreatic polypeptide (PP) and leptin and increased plasma concentration of ghrelin. The postprandial response of satiety hormones (GLP-1, PYY and PP) and postprandial suppression of ghrelin will be improved. METHODS: In a randomized crossover study, 54 patients suffering from type 2 diabetes (T2D) underwent both regimens. The concentrations of GLP-1, GIP, PP, PYY, amylin, leptin and ghrelin were determined using multiplex immunoanalyses. RESULTS: Fasting leptin and GIP decreased in response to both regimens with no difference between the treatments (p = 0.37 and p = 0.83, respectively). Fasting ghrelin decreased in A6 and increased in B2 (with difference between regimens p = 0.023). Fasting PP increased in B2with no significant difference between regimens (p = 0.17). Neither GLP-1 nor PYY did change in either regimen. The decrease in body weight correlated negatively with changes in fasting ghrelin (r = -0.4, p<0.043) and the postprandial reduction of ghrelin correlated positively with its fasting level (r = 0.9, p<0.001). The postprandial responses of GIHs and appetite hormones were similar after both diet regimens. CONCLUSIONS: Both hypocaloric diet regimens reduced fasting leptin and GIP and postprandial response of GIP comparably. The postprandial responses of GIHs and appetite hormones were similar after both diet regimens. Eating only breakfast and lunch increased fasting plasma ghrelin more than the same caloric restriction split into six meals. The changes in fasting ghrelin correlated negatively with the decrease in body weight. These results suggest that for type 2 diabetic patients on a hypocaloric diet, eating larger breakfast and lunch may be more efficient than six smaller meals during the day.

• MeSH
• časové faktory MeSH
• diabetes mellitus 2. typu dietoterapie   patologie   patofyziologie   psychologie   MeSH
• dospělí MeSH
• ghrelin krev   MeSH
• glukagonu podobný peptid 1 krev   MeSH
• hlad fyziologie   MeSH
• inzulinová rezistence MeSH
• jídla * fyziologie   psychologie   MeSH
• kalorická restrikce metody   MeSH
• klinické křížové studie MeSH
• leptin krev   MeSH
• lidé středního věku MeSH
• lidé MeSH
• pankreatický polypeptid krev   MeSH
• peptid YY krev   MeSH
• senioři MeSH
• tělesná hmotnost MeSH
• výsledek terapie MeSH
• žaludeční inhibiční polypeptid krev   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• randomizované kontrolované studie MeSH
• Názvy látek
• ghrelin MeSH
• glukagonu podobný peptid 1 MeSH
• leptin MeSH
• pankreatický polypeptid MeSH
• peptid YY MeSH
• žaludeční inhibiční polypeptid MeSH

BACKGROUND: The intake of meat, particularly processed meat, is a dietary risk factor for diabetes. Meat intake impairs insulin sensitivity and leads to increased oxidative stress. However, its effect on postprandial gastrointestinal hormone (GIH) secretion is unclear. We aimed to investigate the acute effects of two standardized isocaloric meals: a processed hamburger meat meal rich in protein and saturated fat (M-meal) and a vegan meal rich in carbohydrates (V-meal). We hypothesized that the meat meal would lead to abnormal postprandial increases in plasma lipids and oxidative stress markers and impaired GIH responses. METHODS: In a randomized crossover study, 50 patients suffering from type 2 diabetes (T2D) and 50 healthy subjects underwent two 3-h meal tolerance tests. For statistical analyses, repeated-measures ANOVA was performed. RESULTS: The M-meal resulted in a higher postprandial increase in lipids in both groups (p<0.001) and persistent postprandial hyperinsulinemia in patients with diabetes (p<0.001). The plasma glucose levels were significantly higher after the V-meal only at the peak level. The plasma concentrations of glucose-dependent insulinotropic peptide (GIP), peptide tyrosine-tyrosine (PYY) and pancreatic polypeptide (PP) were higher (p<0.05, p<0.001, p<0.001, respectively) and the ghrelin concentration was lower (p<0.001) after the M-meal in healthy subjects. In contrast, the concentrations of GIP, PYY and PP were significantly lower after the M-meal in T2D patients (p<0.001). Compared with the V-meal, the M-meal was associated with a larger increase in lipoperoxidation in T2D patients (p<0.05). CONCLUSION/INTERPRETATION: Our results suggest that the diet composition and the energy content, rather than the carbohydrate count, should be important considerations for dietary management and demonstrate that processed meat consumption is accompanied by impaired GIH responses and increased oxidative stress marker levels in diabetic patients. TRIAL REGISTRATION: ClinicalTrials.gov NCT01572402.

• MeSH
• diabetes mellitus 2. typu krev   patologie   MeSH
• dieta veganská škodlivé účinky   MeSH
• gastrointestinální hormony krev   MeSH
• ghrelin krev   MeSH
• glukagonu podobný peptid 1 krev   MeSH
• inzulin krev   MeSH
• krevní glukóza MeSH
• lidé středního věku MeSH
• lidé MeSH
• lipidy krev   MeSH
• manipulace s potravinami MeSH
• maso škodlivé účinky   MeSH
• postprandiální období MeSH
• triglyceridy krev   MeSH
• žaludeční inhibiční polypeptid krev   MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• randomizované kontrolované studie MeSH
• Názvy látek
• gastrointestinální hormony MeSH
• ghrelin MeSH
• glukagonu podobný peptid 1 MeSH
• inzulin MeSH
• krevní glukóza MeSH
• lipidy MeSH
• triglyceridy MeSH
• žaludeční inhibiční polypeptid MeSH