Dergiler / Turkish Journal of Pharmaceutical Sciences / 2018 / Cilt: 15 - Sayı: 1

Use of Water Soluble and Phosphorescent MPAcapped CdTe Quantum Dots for the Detection of Urea

Üre Tayini için Suda Çözünebilen ve Fosforesan MPA Kaplı CdTe Kuantum Noktacıklarının Kullanımı

Sayfa
44–49
DOI
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⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The same samples were analyzed by an independent laboratory and the results werenot statistically different, at 95% confidence level (F test).Conclusion: The proposed method does not need sample pretreatment, is simple, selective, and cost-effective for the determination of urea inserum samples.

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Amaç & Hipotez:Objectives: To describe a method for the determination of urea in blood serum using urease enzyme and 3-MPA-capped CdTe quantum dots.Materials and Methods: The method is based on the increase in pH of the solution as a result of the reaction between urea and urease, whichcauses an increase in the phosphorescence signal of MPA-CdTe quantum dots in the pH range of 2.5-5.0.
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Temel Bulgular & Veri:Under the optimum conditions, thelinear range of urea was 0.016-0.16 mM (1-10 mg/L) and the limit of detection based on 3 s/b was calculated as 0.003 mM (0.17 mg/L).
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Sonuç & Katkı:The same samples were analyzed by an independent laboratory and the results werenot statistically different, at 95% confidence level (F test).Conclusion: The proposed method does not need sample pretreatment, is simple, selective, and cost-effective for the determination of urea inserum samples.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Alan Parametreleri

Özet

Objectives: To describe a method for the determination of urea in blood serum using urease enzyme and 3-MPA-capped CdTe quantum dots.Materials and Methods: The method is based on the increase in pH of the solution as a result of the reaction between urea and urease, whichcauses an increase in the phosphorescence signal of MPA-CdTe quantum dots in the pH range of 2.5-5.0. Under the optimum conditions, thelinear range of urea was 0.016-0.16 mM (1-10 mg/L) and the limit of detection based on 3 s/b was calculated as 0.003 mM (0.17 mg/L). The relativestandard deviation was calculated as 3.4% at 4 mg/L urea concentration (n=7).Results: The method was applied to human serum samples. The same samples were analyzed by an independent laboratory and the results werenot statistically different, at 95% confidence level (F test).Conclusion: The proposed method does not need sample pretreatment, is simple, selective, and cost-effective for the determination of urea inserum samples.

Abstract

Amaç: Bu çalışmada 3-MPA kaplı CdTe kullanılarak üre tayini için yöntem geliştirilmiştir. Gereç ve Yöntemler: Yöntem üreaz enzimi ile ürenin reaksiyonu sonucu üretilen amonyağın ortam pH’sini değiştirmesi esasına dayanmaktadır. MPA kaplı CdTe’nin fosforesans sinyali pH 2.5-5.0 arasında üre konsantrasyonuyla doğrusal olarak artmaktadır. Optimum koşullar altında doğrusal aralık 0.016-0.16 mM (1-10 mg/L) gözlenebilme sınırı 3 s/b formülüne göre 0.003 mM (0.17 mg/L) olarak hesaplanmıştır. Bağıl standart sapma, 4 mg/L üre konsantrasyonunda %3.4 olarak hesaplanmıştır (n=7). Bulgular: Yöntem serum numunesine başarılı bir şekilde uygulanmıştır. Aynı serum numuneleri bağımsız bir laboratuvar tarafından analiz edilmiş ve sonuçlarda %95 güven aralığında istatistiki fark görülmemiştir (F testi). Sonuç: Önerilen yöntem serumda üre tayini için, örnek ön hazırlığına ihtiyaç duymayan, basit, seçici ve düşük maliyetlidir.

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Bu Makaleye Atıf Yap

OYMAK, T., ERTAŞ, N., TAMER, U. (2018). Use of Water Soluble and Phosphorescent MPAcapped CdTe Quantum Dots for the Detection of Urea. Turkish Journal of Pharmaceutical Sciences, Cilt: 15 - Sayı: 1, 44–49. https://ajindex.com/articles/403654

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Kaynakça (13)

  1. Chen JC, Chou JC, Sun TP, Hsiung SK. Portable urea biosensor based on the extended-gate field effect transistor Sens. Sens Actuators B Chem. 2003;91:180-186
  2. Azadbakht A, Gholivand MB. Covalent attachment of Ni-2,3-pyrazine dicarboxylic acid onto gold nanoparticle gold electrode modified with penicillamine- CdS quantum dots for electrocatalytic oxidation and determination of urea. Electrochimica Acta. 2014;125:9-21
  3. Usman Ali SM, Ibupoto ZH, Salman S, Nur O, Willander M, Danielsson B. Selective determination of urea using urease immobilized on ZnO nanowires. Sens Actuators B Chem. 2011;160:637-643
  4. Alizadeh T, Akbari A. A capacitive biosensor for ultra-trace level urea determination based on nano-sized urea-imprinted polymer receptors coated on graphite electrode surface. Biosens Bioelectron. 2013;43:321- 327
  5. Campanella L, Mazzei F, Sammartino MP, Tommassetti M. New enzyme sensors for urea and creatinine analysis. Bioelectrochemistry. 1990;23:195-202
  6. Bi L, Dong X, Yu Y. Room-temperature phosphorescence sensor based on manganese doped zinc sulfide quantum dots for detection of urea. J Lumin. 2014;153:356-360
  7. Eggenstein C, Borchardt M, Diekmann C, Gründig B, Dumschat C, Cammann K, Knoll M, Spener F. A disposable biosensor for urea determination in blood based on an ammonium-sensitive transducer. Biosens Bioelectron. 1999;14:33-41
  8. Soldatkin AP, Montoriol J, Sant W, Martelet C, Jaffrezic-Renault N. A novel urea sensitive biosensor with extended dynamic range based on recombinant urease and ISFETs. Biosens Bioelectron. 2003;19:131-135
  9. Lakard B, Herlem G, Lakard S, Antoniou A, Fahys B. Urea potentiometric biosensor based on modified electrodes with urease immobilized on polyethylenimine films. Biosens Bioelectron. 2004;19:1641-1647
  10. Mizutani F, Yabuki S, Sato Y. Voltammetric enzyme sensor for urea using mercaptohydroquinone-modified gold electrode as the base transducer. Biosens Bioelectron. 1997;12:321-328
  11. Luo YC, Do JS. Urea biosensor based on PANi(urease)-Nafion/Au composite electrode. Biosens Bioelectron. 2004;20:15-23
  12. Lee WY, Kim SR, Kim TH, Lee KS, Shin MC, Park JK. Sol–gel-derived thick-film conductometric biosensor for urea determination in serum. Anal Chim Acta. 2000;404:195-203
  13. Castillo-Ortega MM, Rodriguez DE, Encinas JC, Plascencia M, MéndezVelarde FA, Olayo R. Conductometric uric acid and urea biosensor prepared from electroconductive polyaniline–poly(n-butyl methacrylate) composites. Sens Actuators