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Effects of Functional Oils on Obesity With Mild Cognitive Impairment

5. juli 2026 oppdatert av: Jiaxuan Tao, Capital Medical University

Interventional Study of Functional Oils Improving Obesity With Mild Cognitive Impairment Via Regulating White Adipose Tissue Browning

The purpose of this study is to investigate the effects of diacylglycerol (DAG) oil on obesity accompanied by mild cognitive impairment (MCI). Participants aged 45 to 75 years with obesity and MCI will be randomly assigned to two groups: a control group receiving regular rapeseed oil (RSO) and an experimental group receiving rapeseed-based DAG oil. The dietary intervention will last for 6 months. The main goal is to observe whether this functional oil intervention can improve cognitive function and regulate white adipose tissue browning.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Obesity is a significant risk factor for the development of cognitive impairment, making precise nutritional interventions a vital strategy for preventing and managing this condition. Based on an established cohort, this randomized controlled trial aims to evaluate the efficacy of substituting regular dietary oil with functional diacylglycerol (DAG) oil in obese patients with MCI.

The study will analyze changes in overall cognitive function, body composition, and dietary quality before and after the 6-month intervention. Furthermore, the study will explore the underlying mechanisms by analyzing biological samples (blood and feces) for alterations in lipid metabolites, gut microbiota composition, inflammatory cytokines, and specific markers of white adipose tissue browning. The findings will help determine the therapeutic potential of DAG oil in regulating lipid metabolism and delaying cognitive decline.

Studietype

Intervensjonell

Registrering (Antatt)

100

Fase

  • Ikke aktuelt

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiekontakt

Studiesteder

    • Beijing Municipality
      • Beijing, Beijing Municipality, Kina, 100069
        • Capital Medical University
        • Ta kontakt med:

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Beskrivelse

Inclusion Criteria:

  • Meets the diagnostic criteria for obesity combined with mild cognitive impairment (MCI) (obesity: BMI ≥28.0 kg/m^2 per the 2022 Chinese Expert Consensus on Obesity Prevention and Treatment; MCI: Montreal Cognitive Assessment [MoCA] score below the education-adjusted cutoff, confirmed by a neurologist)
  • Aged 45 to 75 years
  • Has not been on a diet or has discontinued dieting for at least 3 months, and has not taken fish oil or similar supplements, or is willing to discontinue such supplements for 3 months prior to the intervention
  • Able to accept and consume DAG oil as part of daily diet
  • Voluntarily agrees to participate and signs the informed consent form

Exclusion Criteria:

  • History of neuropsychiatric disorders such as stroke, epilepsy, or schizophrenia
  • Cognitive impairment attributable to depression, thyroid disease, traumatic brain injury, or drug- or alcohol-induced intoxication
  • History of cerebrovascular disease, or cognitive decline due to severe impairment of cardiac, hepatic, pulmonary, or renal function
  • Use of antibiotics, health products, or nutritional supplements within 2 weeks prior to fecal sample collection; or gastrointestinal symptoms (trauma, inflammation/infection, abdominal pain, diarrhea, or constipation) or vaccination history within the same period

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

  • Primært formål: Behandling
  • Tildeling: Randomisert
  • Intervensjonsmodell: Parallell tildeling
  • Masking: Trippel

Våpen og intervensjoner

Deltakergruppe / Arm
Intervensjon / Behandling
Placebo komparator: RSO Group (Rapeseed Oil)
Participants with obesity and mild cognitive impairment (MCI) will be provided with conventional rapeseed oil (RSO), in which diacylglycerol (DAG) occurs only at the low level naturally present in regular cooking oil (predominantly triacylglycerol), for household use for 6 months. Dietary guidance based on balanced nutrition principles will be provided. Compliance, dietary intake, anthropometric, biochemical, and cognitive assessments will be evaluated at baseline and 6 months.
A commercially available conventional rapeseed oil for daily household cooking use, containing diacylglycerol (DAG) only at the trace level naturally occurring in regular vegetable oil.
Andre navn:
  • Conventional rapeseed oil
Eksperimentell: DAG Group (Diacylglycerol Oil)
Participants with obesity and MCI will be provided with rapeseed oil-based diacylglycerol (DAG) oil (DAG content ≥40%), produced from conventional rapeseed oil via lipase-catalyzed enzymatic conversion followed by distillation, deodorization, and decolorization, for household use for 6 months, replacing conventional cooking oil. Dietary guidance based on balanced nutrition principles will be provided. Compliance, dietary intake, anthropometric, biochemical, and cognitive assessments will be evaluated at baseline and 6 months.
A rapeseed oil-based functional oil produced via lipase-catalyzed enzymatic conversion, with a diacylglycerol content ≥40% (national standard requirement), for daily household cooking use in place of conventional cooking oil.
Andre navn:
  • Rapeseed oil-based DAG oil

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change From Baseline in Cognitive Function
Tidsramme: Baseline and 6 months
Change from baseline in cognitive function assessed by the Montreal Cognitive Assessment (MoCA), which evaluates visuospatial/executive function, naming, memory, attention, language, abstraction, delayed recall, and orientation. Total score ranges from 0 to 30, with higher scores indicating better cognitive function.
Baseline and 6 months
Change From Baseline in Body Weight
Tidsramme: Baseline and 6 months
Change from baseline in body weight (kg) measured by bioelectrical impedance analysis (InBody body composition analyzer).
Baseline and 6 months
Change From Baseline in Body Fat Percentage
Tidsramme: Baseline and 6 months
Change from baseline in body fat percentage measured by bioelectrical impedance analysis (InBody body composition analyzer).
Baseline and 6 months

Sekundære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change From Baseline in Visceral Fat Area
Tidsramme: Baseline and 6 months
Change from baseline in visceral fat area measured by bioelectrical impedance analysis (InBody body composition analyzer).
Baseline and 6 months
Change From Baseline in Serum Lipid Concentrations
Tidsramme: Baseline and 6 months
Change from baseline in serum total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and low-density lipoprotein cholesterol (LDL-C), measured by automated biochemical analyzer.
Baseline and 6 months
Change in Gut Microbiota Composition and Metabolites
Tidsramme: Baseline and 6 months
Change from baseline in fecal gut microbiota composition, alpha/beta diversity, and microbial abundance assessed by 16S ribosomal RNA sequencing, and in microbial metabolites including short-chain fatty acids (e.g., butyrate) assessed by untargeted metabolomics.
Baseline and 6 months

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Etterforskere

  • Hovedetterforsker: Rong Xiao, PhD, Capital Medical University

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. juli 2026

Primær fullføring (Antatt)

1. januar 2027

Studiet fullført (Antatt)

1. mars 2027

Datoer for studieregistrering

Først innsendt

29. juni 2026

Først innsendt som oppfylte QC-kriteriene

5. juli 2026

Først lagt ut (Faktiske)

8. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

8. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

5. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • CNS-NNSRG2024-139

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

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