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Effekt av förändringar i kolhydratintag på glukoskontroll hos patienter med typ 1-diabetes

7 september 2026 uppdaterad av: Yang Tao

Effekt av förändringar i kolhydratintag på glukoskontroll hos patienter med typ 1-diabetes.

Blodsockret fluktuerar kraftigt hos T1DM-patienter, särskilt i mitten och sena stadier av sjukdomen, och kolhydrater (CHO) är den huvudsakliga bestämningsfaktorn för postprandial glukosrespons (PGR). Baserat på den tidigare undersökningen för att förstå hur näringsvanor påverkar blodsockerkontrollen, kommer vi att genomföra kostinterventionsstudier på T1DM-patienter för att undersöka om justeringen av kostmönster är fördelaktigt för blodsockerkontrollen, och ytterligare utforska den relevanta mekanismen genom att upptäcka relaterade metabola indikatorer.

Studieöversikt

Detaljerad beskrivning

1. Huvudmål: Att utvärdera effekten av förändringar av kolhydratintag på glukoskontroll hos patienter med typ 1-diabetes.

  1. Primär endpoint: skillnad i tidsintervall (TIR) ​​mellan de två grupperna.
  2. Sekundär slutpunkt:

1) skillnad i variationskoefficient (CV), medelamplitud av glykemiska avvikelser (MAGE), stor amplitud av glykemiska avvikelser (LAGE) mellan de två grupperna; 2) skillnad i förändring i HbA1c,GA,1,5-anhydroglucitol (1,5-AG) från baslinjen mellan de två grupperna; 3) skillnad i förändring i incidens av hypoglykemiska händelser (%), allvarlig hypoglykemi och nattlig hypoglykemi från baslinjen mellan de två grupperna; 4) skillnad i förändring i insulindos (IE/kg/dag) från baslinjen mellan de två grupperna.

2. Sekundärt mål: Att utforska den möjliga mekanismen för dietintervention för att förbättra blodsockerkontrollen hos patienter med typ 1-diabetes.

  1. Effekter av kostintervention på tarmmikromiljö och mikroflora hos patienter med typ 1-diabetes;
  2. Effekter av dietintervention på immunfunktionen hos patienter med typ 1-diabetes;
  3. Effekter av kostintervention på metabolomik hos patienter med typ 1-diabetes.

Studietyp

Interventionell

Inskrivning (Beräknad)

80

Fas

  • Inte tillämpbar

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

  • Namn: Tao Yang, MD/PhD
  • Telefonnummer: 6466 86-25-83718836
  • E-post: yangt@njmu.edu.cn

Studieorter

    • Jiangsu
      • Nanjing, Jiangsu, Kina, 210029
        • Rekrytering
        • First Affiliated Hospital, Nanjing Medical University
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

  • Vuxen
  • Äldre vuxen

Tar emot friska volontärer

Nej

Beskrivning

Inklusionskriterier:

  1. De som samtycker till att delta i studien och undertecknar informerat samtycke;
  2. Diagnos av typ 1-diabetes mellitus (ADA2024);
  3. Ålder 18~65 år;
  4. Beroende på exogen insulinterapi (CSII) förblir behandlingsplanen oförändrad inom 2 månader (insulintypen kan inte ändras och dosen kan justeras efter plasmaglukos);
  5. Body mass index (BMI) på 18~24 kg/m2;
  6. HbA1c ≤9,5%;
  7. Slumpmässig C-peptid ≥200 pmol/L.

Exklusions kriterier:

  1. Smekmånadsfirare med typ 1-diabetes mellitus;
  2. Kvinnor som är gravida eller planerar att bli gravida;
  3. Patienter som är vegetarianer;
  4. Patienter som använder orala hypoglykemiska läkemedel (alfa-glukosidashämmare, DPP-IV-hämmare, etc.);
  5. Patienter som använder glukokortikoider inom 30 dagar;
  6. Historik av allvarlig matallergi;
  7. Patienter med akuta komplikationer såsom DKA;
  8. Patienter med gastropares, inflammatorisk tarmsjukdom och andra komplikationer;
  9. Patienter med stor albuminuri och njurinsufficiens;
  10. Patienter med okontrollerad hypertyreos och hypotyreos;
  11. Historik av hjärtsjukdom, kranskärlssjukdom och arytmi;
  12. Allvarlig leverdysfunktion (ALT eller AST>1,5 gånger den övre normalgränsen);
  13. Historik av maligna tumörer, okontrollerade andra immunsystemsjukdomar, okontrollerade infektioner;
  14. Alkoholmissbruk, psykiska störningar eller andra tillstånd olämpliga att vara observatör i drogtester;
  15. Patienter med någon sjukdom som sannolikt kommer att störa studiedeltagande eller utvärdering.

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Primärt syfte: Behandling
  • Tilldelning: Randomiserad
  • Interventionsmodell: Parallellt uppdrag
  • Maskning: Enda

Vapen och interventioner

Deltagargrupp / Arm
Intervention / Behandling
Experimentell: diverse carbohydrate diet

Carbohydrate, protein, and fat provide 45-55%, 15-20%, and 25-35% of total dietary energy, respectively. Of the staple carbohydrate sources, 45-50% are derived from refined grains and 45-50% from whole grains and legumes.

Total daily energy intake is divided among three meals, with breakfast providing 25-30% of total energy, lunch 30-40%, and dinner 30-35%.

Carbohydrate, protein, and fat provide 45-55%, 15-20%, and 25-35% of total dietary energy, respectively. Of the staple carbohydrate sources, 45-50% are derived from refined grains and 45-50% from whole grains and legumes. Total daily energy intake is divided among three meals, with breakfast providing 25-30% of total energy, lunch 30-40%, and dinner 30-35%.
Övrig: moderate carbohydrate diet

Carbohydrate, protein, and fat provide 45-55%, 15-20%, and 25-35% of total dietary energy, respectively. Of the staple carbohydrate sources, 90-95% are derived from refined grains.

Total daily energy intake is divided among three meals, with breakfast providing 25-30% of total energy, lunch 30-40%, and dinner 30-35%.

Carbohydrate, protein, and fat provide 45-55%, 15-20%, and 25-35% of total dietary energy, respectively. Of the staple carbohydrate sources, 90-95% are derived from refined grains. Total daily energy intake is divided among three meals, with breakfast providing 25-30% of total energy, lunch 30-40%, and dinner 30-35%.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Time in range (TIR)
Tidsram: 4 weeks (2 weeks after randomization)
TIR is defined as the percentage of time that glucose levels are between 3.9 and 10.0 mmol/L, as measured by continuous glucose monitoring (CGM). TIR at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Time above range(TAR)
Tidsram: 4 weeks (2 weeks after randomization)
TAR is defined as the percentage of time that glucose levels are above 10.0 mmol/L, as measured using continuous glucose monitoring (CGM). TAR at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Time below range(TBR)
Tidsram: 4 weeks (2 weeks after randomization)
TBR is defined as the percentage of time that glucose levels are below 3.9 mmol/L, as measured using continuous glucose monitoring (CGM). TBR at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Mean glucose (MG)
Tidsram: 4 weeks (2 weeks after randomization)
Mean glucose is defined as the arithmetic mean of all valid glucose values recorded during the 2-week continuous glucose monitoring (CGM) period. Mean glucose at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Standard deviation of glucose (SD)
Tidsram: 4 weeks (2 weeks after randomization)
SD is a continuous glucose monitoring (CGM)-derived measure of glycemic variability. SD at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Glucose coefficient of variation (CV)
Tidsram: 4 weeks (2 weeks after randomization)
CV is a continuous glucose monitoring (CGM)-derived measure of glycemic variability. CV at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Mean amplitude of glycemic excursions (MAGE)
Tidsram: 4 weeks (2 weeks after randomization)
MAGE is a continuous glucose monitoring (CGM)-derived measure of glycemic variability. MAGE at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Largest amplitude of glycemic excursions (LAGE)
Tidsram: 4 weeks (2 weeks after randomization)
LAGE is a continuous glucose monitoring (CGM)-derived measure of glycemic variability. LAGE at the end of the 2-week dietary intervention will be compared between the two groups.
4 weeks (2 weeks after randomization)
Glycated albumin (GA)
Tidsram: 4 weeks (2 weeks after randomization)
Glycated albumin will be measured at the end of the 2-week dietary intervention and compared between the two groups.
4 weeks (2 weeks after randomization)
Glycated hemoglobin A1c (HbA1c)
Tidsram: 16 weeks (14 weeks after randomization)
HbA1c will be measured at the end of the follow-up period and compared between the two groups.
16 weeks (14 weeks after randomization)
C-peptide area under the curve (AUC C-peptide)
Tidsram: 16 weeks (14 weeks after randomization)
C-peptide area under the curve will be assessed during a 3-hour mixed-meal tolerance test and calculated using the trapezoidal rule. The assessment will be performed in participants with fasting C-peptide >80 pmol/L.
16 weeks (14 weeks after randomization)
Glucagon area under the curve (AUC glucagon)
Tidsram: 16 weeks (14 weeks after randomization)
Glucagon area under the curve will be assessed during a 3-hour mixed-meal tolerance test and calculated using the trapezoidal rule. The assessment will be performed in participants with fasting C-peptide >80 pmol/L.
16 weeks (14 weeks after randomization)
Fasting blood glucose (FBG)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Fasting blood glucose will be measured at the end of the dietary intervention and at the end of the follow-up period and compared between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Total cholesterol (TC)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Total cholesterol will be measured at the end of the dietary intervention and at the end of the follow-up period and compared between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Triglycerides (TG)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Triglycerides will be measured at the end of the dietary intervention and at the end of the follow-up period and compared between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Low-density lipoprotein cholesterol (LDL-C)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
LDL-C will be measured at the end of the dietary intervention and at the end of the follow-up period and compared between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
High-density lipoprotein cholesterol (HDL-C)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
HDL-C will be measured at the end of the dietary intervention and at the end of the follow-up period and compared between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
1,5-Anhydroglucitol (1,5-AG)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
1,5-AG will be measured at the end of the dietary intervention and at the end of the follow-up period and compared between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Total daily insulin dose
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Total daily insulin dose, expressed as IU/kg/day, will be assessed at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Basal insulin dose
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Basal insulin dose, expressed as IU/kg/day, will be assessed at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Prandial insulin dose
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Prandial insulin dose, expressed as IU/kg/day, will be assessed at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Body weight
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Body weight will be measured at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Waist circumference
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Waist circumference will be measured at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Hip circumference
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Hip circumference will be measured at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Waist-to-hip ratio (WHR)
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Waist-to-hip ratio will be calculated from waist and hip circumference measurements at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Body composition
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Body composition will be assessed using a body composition analyzer at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Hypoglycemic events
Tidsram: From randomization to the end of follow-up at 16 weeks
Hypoglycemic events will be assessed by the number of events per participant, the proportion of participants experiencing at least one hypoglycemic event, and the incidence rate of hypoglycemic events.
From randomization to the end of follow-up at 16 weeks
Diabetic ketoacidosis (DKA)
Tidsram: From randomization to the end of follow-up at 16 weeks
The number and proportion of participants experiencing diabetic ketoacidosis will be assessed and compared between the two groups.
From randomization to the end of follow-up at 16 weeks

Andra resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Gut microbiota profile
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Gut microbiota profiles will be assessed from fecal samples at the end of the dietary intervention and at the end of the follow-up period to evaluate differences between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Metabolomic profile
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
Metabolomic profiles will be assessed at the end of the dietary intervention and at the end of the follow-up period to evaluate differences between the two groups.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
T-cell subset proportions
Tidsram: 4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)
The proportions of T-cell subsets will be assessed by flow cytometry at the end of the dietary intervention and at the end of the follow-up period.
4 weeks (2 weeks after randomization) and 16 weeks (14 weeks after randomization)

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Utredare

  • Huvudutredare: Tao Yang, MD/PhD, First Affiliated Hospital, Nanjing Medical University, China

Publikationer och användbara länkar

Den som ansvarar för att lägga in information om studien tillhandahåller frivilligt dessa publikationer. Dessa kan handla om allt som har med studien att göra.

Allmänna publikationer

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Faktisk)

1 augusti 2024

Primärt slutförande (Beräknad)

31 december 2027

Avslutad studie (Beräknad)

31 december 2027

Studieregistreringsdatum

Först inskickad

23 februari 2023

Först inskickad som uppfyllde QC-kriterierna

16 februari 2024

Första postat (Faktisk)

22 februari 2024

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

10 september 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

7 september 2026

Senast verifierad

1 september 2026

Mer information

Termer relaterade till denna studie

Läkemedels- och apparatinformation, studiedokument

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produkt tillverkad i och exporterad från U.S.A.

Nej

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