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Inflammation and Diabetes: Evaluating Antioxidant Levels (IDEAL)

2026年7月24日 更新者: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?

調査の概要

状態

まだ募集していません

条件

介入・治療

詳細な説明

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.

研究の種類

観察的

入学 (推定)

180

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

研究連絡先のバックアップ

研究場所

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

  • 大人
  • 高齢者

健康ボランティアの受け入れ

いいえ

サンプリング方法

非確率サンプル

調査対象母集団

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

説明

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.

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

コホートと介入

グループ/コホート
介入・治療
Controlled Type 2 Diabetes
Adults diagnosed with Type 2 Diabetes with an HbA1c level of < 7%
介入なし
Uncontrolled Type 2 Diabetes
Adults diagnosed with Type 2 Diabetes with an HbA1c level of ≥ 7%
介入なし

この研究は何を測定していますか?

主要な結果の測定

結果測定
メジャーの説明
時間枠
Composite Dietary Antioxidant Index (CDAI)
時間枠: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
時間枠: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)
時間枠:Baseline
Calculated from peripheral blood parameters using the formula: Platelet count × Neutrophil count / Lymphocyte count.
Baseline
Systemic Inflammation Response Index (SIRI)
時間枠:Baseline
Calculated using the formula: Neutrophil count × Monocyte count / Lymphocyte count.
Baseline
Triglyceride-Glucose (TyG) Index
時間枠: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)
時間枠: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)
時間枠: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

二次結果の測定

結果測定
メジャーの説明
時間枠
Anthropometric Measurements - Body weight (kg)
時間枠: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
時間枠:Baseline
Height (cm) will be measured with a stadiometer in the Frankfort plane, standing and with the head upright.
Baseline
Body Mass Index
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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)
時間枠: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
時間枠: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)
時間枠: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)
時間枠: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)
時間枠: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
時間枠: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
時間枠:Baseline
Assessed using the International Physical Activity Questionnaire Short Form (IPAQ-Short Form) in MET-min/week.
Baseline
Biochemical Measurements - Fasting blood glucose
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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)
時間枠: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)
時間枠: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)
時間枠: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
時間枠: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)
時間枠: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
時間枠: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
時間枠: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
時間枠:Baseline
Waist/hip ratio will be obtained by dividing waist circumference by hip at the beginning and end of the study.
Baseline

協力者と研究者

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出版物と役立つリンク

研究に関する情報を入力する責任者は、自発的にこれらの出版物を提供します。これらは、研究に関連するあらゆるものに関するものである可能性があります。

一般刊行物

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (推定)

2026年7月15日

一次修了 (推定)

2026年12月30日

研究の完了 (推定)

2026年12月30日

試験登録日

最初に提出

2026年7月13日

QC基準を満たした最初の提出物

2026年7月24日

最初の投稿 (実際)

2026年7月29日

学習記録の更新

投稿された最後の更新 (実際)

2026年7月29日

QC基準を満たした最後の更新が送信されました

2026年7月24日

最終確認日

2026年7月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • IDEAL (Lupus Research Alliance)

個々の参加者データ (IPD) の計画

個々の参加者データ (IPD) を共有する予定はありますか?

未定

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

いいえ

米国FDA規制機器製品の研究

いいえ

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