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Inflammation and Diabetes: Evaluating Antioxidant Levels (IDEAL)

24 lipca 2026 zaktualizowane przez: Hande Seven Avuk, Istanbul Bilgi University

The Relationship Between Dietary Antioxidant Capacity, Inflammatory Response, and Nutritional Parameters in Type 2 Diabetes Management

The goal of this observational, cross-sectional study is to evaluate the relationships between dietary total antioxidant capacity, systemic inflammatory response markers, and nutritional parameters in adult patients with Type 2 Diabetes (T2DM). Participants will be classified into controlled (HbA1c < %7) and uncontrolled (HbA1c ≥ %7) diabetes groups based on their glycemic control. The main questions it aims to answer are: Does dietary antioxidant capacity affect systemic inflammation levels and metabolic parameters? Is there a relationship between nutritional risk status and inflammatory response in T2DM patients?

Przegląd badań

Status

Jeszcze nie rekrutacja

Warunki

Interwencja / Leczenie

Szczegółowy opis

Type 2 Diabetes Mellitus (T2DM) is defined not only as a carbohydrate metabolism disorder but also as a chronic, low-grade inflammatory condition. In this pathological process, the total capacity of dietary antioxidants is a determining factor in maintaining metabolic control. This study will evaluate dietary antioxidant intake using the Antioxidant Food Frequency Questionnaire to calculate the Dietary Antioxidant Index (DAI) and Composite Dietary Antioxidant Index (CDAI). Furthermore, systemic inflammation will be comprehensively evaluated using novel hematological and biochemical indices including the Systemic Immune-Inflammation Index (SII), Systemic Inflammation Response Index (SIRI), Neutrophil/Lymphocyte Ratio (NLR), Platelet/Lymphocyte Ratio (PLR), and C-reactive protein/albumin ratio (CAR). Nutritional status will be assessed using NRS-2002 and MUST screening tools.

Typ studiów

Obserwacyjny

Zapisy (Szacowany)

180

Kontakty i lokalizacje

Ta sekcja zawiera dane kontaktowe osób prowadzących badanie oraz informacje o tym, gdzie badanie jest przeprowadzane.

Kontakt w sprawie studiów

Kopia zapasowa kontaktu do badania

Lokalizacje studiów

      • Istanbul, Turcja (Türkiye)
        • Gaziosmanpasa Training and Research Hospital

Kryteria uczestnictwa

Badacze szukają osób, które pasują do określonego opisu, zwanego kryteriami kwalifikacyjnymi. Niektóre przykłady tych kryteriów to ogólny stan zdrowia danej osoby lub wcześniejsze leczenie.

Kryteria kwalifikacji

Wiek uprawniający do nauki

  • Dorosły
  • Starszy dorosły

Akceptuje zdrowych ochotników

Nie

Metoda próbkowania

Próbka bez prawdopodobieństwa

Badana populacja

Outpatients applying to Internal Medicine and Family Medicine clinics of Gaziosmanpasa Training and Research Hospital, Istanbul, Turkey.

Opis

Inclusion Criteria:

  • Adults aged 18 and older diagnosed with Type 2 Diabetes.
  • Individuals whose biochemical analyses have been performed by a physician within the last 1 month.
  • Individuals willing to participate voluntarily.

Exclusion Criteria:

  • Missing required laboratory data in the last 1 month.
  • Presence of acute infection or inflammatory disease.
  • Advanced kidney or liver failure.
  • Active malignancy or receiving chemotherapy/radiotherapy.
  • Pregnant and lactating women.
  • Use of antioxidant/vitamin-mineral supplements.
  • Receiving special diet therapies (e.g., time-restricted, ketogenic, or elimination diet).
  • Advanced cognitive impairment or communication difficulties.

Plan studiów

Ta sekcja zawiera szczegółowe informacje na temat planu badania, w tym sposób zaprojektowania badania i jego pomiary.

Jak projektuje się badanie?

Szczegóły projektu

Kohorty i interwencje

Grupa / Kohorta
Interwencja / Leczenie
Controlled Type 2 Diabetes
Adults diagnosed with Type 2 Diabetes with an HbA1c level of < 7%
Brak interwencji
Uncontrolled Type 2 Diabetes
Adults diagnosed with Type 2 Diabetes with an HbA1c level of ≥ 7%
Brak interwencji

Co mierzy badanie?

Podstawowe miary wyniku

Miara wyniku
Opis środka
Ramy czasowe
Composite Dietary Antioxidant Index (CDAI)
Ramy czasowe: Baseline
The Composite Dietary Antioxidant Index (CDAI) will be calculated to evaluate the total and synergistic effect of dietary antioxidants. It is based on the standardized daily intake of six main antioxidant components: Vitamin A, Vitamin C, Vitamin E, Magnesium, Selenium, and Zinc. Nutrient data will be obtained from food consumption records using the BeBiS 9 nutritional software. For each antioxidant nutrient, a unitless Z-score will be calculated by subtracting the population's mean intake from the individual's intake and dividing by the standard deviation.
Baseline
The Dietary Antioxidant Index
Ramy czasowe: Baseline
The Dietary Antioxidant Index (DAI) will be calculated based on the daily antioxidant intake obtained from the participants' food frequency questionnaire data. The main dietary antioxidant components (Vitamin C, Vitamin E, $\beta$-carotene, flavonoids, and other polyphenols) will be quantitatively determined using the BeBiS 9 nutritional software. For each antioxidant component, the obtained values will be standardized into a Z-score by subtracting the mean intake of the study population from the individual's intake and dividing by the standard deviation. The individual's final DAI score will then be calculated by summing the Z-scores of all these components.
Baseline
Systemic Immune-Inflammation Index (SII)
Ramy czasowe: Baseline
Calculated from peripheral blood parameters using the formula: Platelet count × Neutrophil count / Lymphocyte count.
Baseline
Systemic Inflammation Response Index (SIRI)
Ramy czasowe: Baseline
Calculated using the formula: Neutrophil count × Monocyte count / Lymphocyte count.
Baseline
Triglyceride-Glucose (TyG) Index
Ramy czasowe: Baseline
Calculated using fasting plasma glucose and fasting triglyceride levels as an indirect marker of insulin resistance.
Baseline
Nutritional Assessment - Nutritional Risk Screening 2002 (NRS-2002)
Ramy czasowe: Baseline
The nutritional risk of the participants will be evaluated using the Nutritional Risk Screening 2002 (NRS-2002) tool. The NRS-2002 assesses impaired nutritional status and disease severity. The total score ranges from 0 to 7. A total score of 3 or higher indicates that the patient is at nutritional risk, while a score less than 3 indicates no immediate nutritional risk. The assessment will be administered by the researcher at the beginning of the study.
Baseline
Nutritional Assessment - Malnutrition Universal Screening Tool (MUST)
Ramy czasowe: Baseline
The nutritional risk of the participants will be evaluated using the Malnutrition Universal Screening Tool (MUST). MUST is a validated screening tool used to identify adults who are malnourished or at risk of malnutrition. The score is calculated based on three parameters: current body mass index (BMI), unintentional weight loss, and the effect of acute disease. The total score ranges from 0 to 6. A score of 0 indicates low risk, a score of 1 indicates medium risk, and a score of 2 or higher indicates a high risk of malnutrition. The assessment will be administered by the researcher at the beginning of the study.
Baseline

Miary wyników drugorzędnych

Miara wyniku
Opis środka
Ramy czasowe
Anthropometric Measurements - Body weight (kg)
Ramy czasowe: Baseline
At the beginning and end of the study, body weights (kg) will be measured using a weighing scales with a sensitivity of 50 grams in accordance with the measurement standards.
Baseline
Anthropometric Measurements - Height
Ramy czasowe: Baseline
Height (cm) will be measured with a stadiometer in the Frankfort plane, standing and with the head upright.
Baseline
Body Mass Index
Ramy czasowe: Baseline
The body mass index (BMI) of the participants will calculated according to the body weight (kg) / height (m)2 form.
Baseline
Anthropometric Measurements - Fat Mass
Ramy czasowe: Baseline
At the beginning and end of the study, body fat mass (kg) analysis will be performed using a bioelectrical impedanc device, paying attention to measurement standards.
Baseline
Body Mass Index Classification
Ramy czasowe: Baseline
The body mass index (BMI) of the participants is classiOed according to the World Health Organization (WHO) crite ≤ 18.5 kg/m2 is underweight, between 18.5-24.99 kg/m2 is normal, ≥ 25 kg/m2 is overweight, and ≥ 30 kg/m2 is obesity.
Baseline
Anthropometric Measurements - Fat ratio calculation
Ramy czasowe: Baseline
At the beginning and end of the study, body composition analyses will be performed using a bioelectrical impedanc device with measurement standards. According to the BIA analysis, fat percentage (%) will be calculated as the rati total body fat weight to total body weight.
Baseline
Anthropometric Measurements - Fat-free mass
Ramy czasowe: Baseline
At the beginning and end of the study, fat-free mass (kg) will be analyzed using a bioelectrical impedance (BIA) dev paying attention to measurement standards.
Baseline
Anthropometric Measurements - Muscle mass
Ramy czasowe: Baseline
At the beginning and end of the study, lean muscle mass (kg) will be analyzed using a bioelectrical impedance (BIA paying attention to measurement standards.
Baseline
Anthropometric Measurements - Total body water
Ramy czasowe: Baseline
At the beginning and end of the study, total body water (kg) will be analyzed using a bioelectrical impedance (BIA) paying attention to measurement standards.
Baseline
Biochemical Measurements - Platelet count (PLT)
Ramy czasowe: Baseline
The platelet levels (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Monocyte count
Ramy czasowe: Baseline
The monocyte levels (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Lymphocyte count (LYM)
Ramy czasowe: Baseline
Lymphocyte count (LYM) (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Neutrophil count (NEU)
Ramy czasowe: Baseline
Neutrophil count (NEU) (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - White blood cell (WBC)
Ramy czasowe: Baseline
The white blood cell levels (mcL) will be analyzed in the hospital biochemistry laboratory using routine methods fro samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - CRP
Ramy czasowe: Baseline
Participants' c-reactive protein tests (CRP) (mg/L) will be analyzed in the hospital biochemistry laboratory using ro methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fasting and w consuming alcohol for 24 hours before.
Baseline
Physical Activity Level
Ramy czasowe: Baseline
Assessed using the International Physical Activity Questionnaire Short Form (IPAQ-Short Form) in MET-min/week.
Baseline
Biochemical Measurements - Fasting blood glucose
Ramy czasowe: Baseline
Fasting blood sugar (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from bl samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurement - Lipid Profile
Ramy czasowe: Baseline
Participants' biochemical tests (total cholesterol, HDL cholesterol, LDL cholesterol, triglyceride, (mg/dL) will be ana the hospital biochemistry laboratory using routine methods at the beginning of the study from blood samples taken nurse after at least 12 hours of fasting and without consuming alcohol for 24 hours before.
Baseline
Biochemical Measurements - Liver Enzymes
Ramy czasowe: Baseline
Participants' liver enzymes tests (ALT, AST, and ALP) (IU) will be analyzed in the hospital biochemistry laboratory us routine methods at the beginning of the study from blood samples taken by a nurse after at least 12 hours of fastin without consuming alcohol for 24 hours before.
Baseline
Biochemical Measurements - HbA1c
Ramy czasowe: Baseline
HbA1C will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken b nurse at the beginning of the study.
Baseline
Biochemical Measurements - Urea
Ramy czasowe: Baseline
The blood urea (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Serum Albumine
Ramy czasowe: Baseline
Serum Albumine (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from bloo samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Hemoglobin (Hb)
Ramy czasowe: Baseline
The hemoglobin levels (g/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Hematocrit (Hct)
Ramy czasowe: Baseline
The hematocrit levels (%) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Red blood cell count (RBC)
Ramy czasowe: Baseline
The red blood cell levels (millions/mcL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Creatinine
Ramy czasowe: Baseline
The creatinine levels (mg/dL) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Biochemical Measurements - Glomerular Filtration Rate (GFR)
Ramy czasowe: Baseline
The glomerular filtration rate (mL/min/1.73m²) will be analyzed in the hospital biochemistry laboratory using routine methods from blood samples taken by a nurse at the beginning of the study.
Baseline
Anthropometric Measurements - Circumferences
Ramy czasowe: Baseline
Waist, hip, neck, upper middle arm, and calf circumference measurements of the participants were measured in light clothing on an empty stomach, following anthropometric measurement standards.
Baseline
Anthropometric Measurements - Waist/Height Ratio
Ramy czasowe: Baseline
Waist/height ratio will be obtained by dividing waist circumference by height at the beginning and end of the study.
Baseline
Anthropometric Measurements - Waist/Hip Ratio
Ramy czasowe: Baseline
Waist/hip ratio will be obtained by dividing waist circumference by hip at the beginning and end of the study.
Baseline

Współpracownicy i badacze

Tutaj znajdziesz osoby i organizacje zaangażowane w to badanie.

Sponsor

Współpracownicy

Publikacje i pomocne linki

Osoba odpowiedzialna za wprowadzenie informacji o badaniu dobrowolnie udostępnia te publikacje. Mogą one dotyczyć wszystkiego, co jest związane z badaniem.

Publikacje ogólne

Daty zapisu na studia

Daty te śledzą postęp w przesyłaniu rekordów badań i podsumowań wyników do ClinicalTrials.gov. Zapisy badań i zgłoszone wyniki są przeglądane przez National Library of Medicine (NLM), aby upewnić się, że spełniają określone standardy kontroli jakości, zanim zostaną opublikowane na publicznej stronie internetowej.

Główne daty studiów

Rozpoczęcie studiów (Szacowany)

15 lipca 2026

Zakończenie podstawowe (Szacowany)

30 grudnia 2026

Ukończenie studiów (Szacowany)

30 grudnia 2026

Daty rejestracji na studia

Pierwszy przesłany

13 lipca 2026

Pierwszy przesłany, który spełnia kryteria kontroli jakości

24 lipca 2026

Pierwszy wysłany (Rzeczywisty)

29 lipca 2026

Aktualizacje rekordów badań

Ostatnia wysłana aktualizacja (Rzeczywisty)

29 lipca 2026

Ostatnia przesłana aktualizacja, która spełniała kryteria kontroli jakości

24 lipca 2026

Ostatnia weryfikacja

1 lipca 2026

Więcej informacji

Terminy związane z tym badaniem

Inne numery identyfikacyjne badania

  • IDEAL (Lupus Research Alliance)

Plan dla danych uczestnika indywidualnego (IPD)

Planujesz udostępniać dane poszczególnych uczestników (IPD)?

NIEZDECYDOWANY

Informacje o lekach i urządzeniach, dokumenty badawcze

Bada produkt leczniczy regulowany przez amerykańską FDA

Nie

Bada produkt urządzenia regulowany przez amerykańską FDA

Nie

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