To Evaluate the Efficacy and Safety of N-acetyl Cysteine Administration in Patients With Diabetic Retinopathy
Effect of N-Acetyl Cysteine on Oxidative Stress and Clinical Outcome of Patients With Diabetic Retinopathy
N-acetylcysteine (NAC) emerges as a crucial factor in mitigating oxidative stress and inhibiting vascular endothelial activation in diabetic patients, through its effect on VEGF expression as VEGF is involved in the development of diabetic microvascular complications through the promotion of retinal angiogenesis and increased vascular permeability.
It was reported in the literature that NAC administration was safe in several studies. It was shown that the dose of 1200 mg is safe and effective.
To the best of our knowledge, the present study is the first to be designed to evaluate the effect of N-acetyl cysteine on diabetic retinopathy in type 2 diabetic patients.
調査の概要
詳細な説明
Eligible patients will be randomly assigned into one of two groups. In the first group : patients will receive N-acetyl cysteine 1200 mg once daily for three months.
In addition to the standard of care antidiabetic management. In the second group: patients will take matched placebo for three months. In addition to the standard of care antidiabetic management.
Demographic data collection and history taking:
- Age
- Gender
- BMI
- Smoking status
- Diabetes duration
- Family history
- Medical history: Hypertension, Dyslipidemia, etc.
- Medications history especially those related to the occurrence of retinopathy
Clinical assessment, scoring & investigations:
- Systolic and diastolic blood pressures.
- Stage of retinopathy
- Ophthalmologic examination:
- Clinical examination to assess:Visual acuity and Field of vision
Laboratory assessment:
- Blood glucose measurement
- HbA1c level (%)
- HDL cholesterol (mmol/L)
- Non-HDL cholesterol (mmol/L)
- LDL cholesterol (mmol/L)
- Triglyceride (mmol/L)
- Glutathione peroxidase
- VEGF All patients will be followed up regularly for 3 months during the study period. They will be followed up weekly through telephone calls and will return every 4 weeks for clinical evaluation as well as verification of adherence to the study regimen. Any addition or deletion of a medication used by the study patients will be reported and dealt with if necessary.
At the end of the study the same tests will be repeated to compare the patients before and after taking N-acetyl cysteine.
研究の種類
入学 (推定)
段階
- フェーズ 4
連絡先と場所
研究連絡先
- 名前：Nelly tarek Hegazy
- 電話番号：01010008548
- メール：nelly.tariq@pharma.asu.edu.eg
研究連絡先のバックアップ
- 名前：Lamiaa Elwakeel, Professor
研究場所
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Cairo、エジプト
- 募集
- National Institute of Diabetes and Endocrinology.
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コンタクト：
- National Institute of Diabetes and Endocrinology. National Institute of Diabetes and Endocrinology.
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参加基準
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
説明
Inclusion Criteria:
Patients with type 2 diabetes mellitus
- Patients with mild to moderate degrees of diabetic retinopathy
- Patients over the age of 18 and under the age of 70 years
- Patients who voluntarily give their informed consent
- HbA1C (glycosylated hemoglobin) less than 10%
- FBG less than 240 mg/dl
- Body mass index (BMI) less than 40 kg/m2
Exclusion Criteria:
• Patients with any other ophthalmologic conditions than diabetic retinopathy
- Patients with previous surgical or laser treatment
- Pregnant or breastfeeding patients
- Patients using antioxidants.
- Systemic anti-VEGF or pro-VEGF treatment within 4 months before randomization
- Patients who are currently participating in other clinical trials
- Severe liver or renal disease, (AST or ALT >3 times ULN or Total bilirubin >3 times ULN), (CrCl< 60 ml/min)
- Current history of drug or alcohol abuse Malignancies
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：処理
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：独身
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
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介入なし：NPDR patients will receive placebo for three months.
The patients will receive placebo for three months.
In addition to the standard of care antidiabetic management.
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実験的：NPDR patients will receive N-acetyl cysteine 1200 mg once daily for three months.
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N-acetylcysteine (NAC), alternatively referred to as N-acetyl-L-cysteine, is an acetylated version of the amino acid L-cysteine, with the chemical formula C5H9NO3S.
Initially employed to thin stubborn bronchial secretions, NAC has found application in treating chronic bronchitis and various pulmonary ailments to address thick mucus.
Remarkably, NAC functions as both a direct antioxidant and a precursor to glutathione.
It effectively eliminates reactive oxygen species (ROS), such as hydroxyl radicals, hypochlorous acid, and hydrogen peroxide.
These ROS have the potential to oxidize lipids, proteins, and DNA, generating carbon-centered radicals along the DNA backbone, ultimately leading to cell death.The thiol group in NAC is responsible for its antioxidant properties.
Additionally, NAC can be metabolized into cysteine, a key building block in the synthesis of glutathione.
Glutathione plays a crucial role as an antioxidant, protecting cellular components from damage caused by ROS(
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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 |
|---|---|---|
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Changes in glutathione peroxidase levels
時間枠：will be measured at time 0 and after 3 months of taking n acetyl cysteine
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Changes in glutathione peroxidase levels in patients with diabetic retinopathy treated with N-acetyl cysteine.
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will be measured at time 0 and after 3 months of taking n acetyl cysteine
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協力者と研究者
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。