بررسی رهایش داروهای ضد سرطان متوتروکسات و 5- فلوئوروراسیل از ساختار چندلایه نانولیفی پلی‌کاپرولاکتون: کیتوسان

نویسندگان

1 1- دانشکده مهندسی نساجی، دانشگاه صنعتی اصفهان، ایران، اصفهان 83111-84156

2 2- دانشگاه علوم پزشکی تهران، مرکز تحقیقات سرطان، ایران، تهران 53761-14176

چکیده

در این پژوهش، ساختارهای هفت‌لایه نانولیفی از پلیمرهای پلی‌کاپرولاکتون: کیتوسان حاوی دو داروی ضدسرطان متوتروکسات و 5- فلوئوروراسیل، به‌منظور رهایش کنترل‌شده دارو، تولید و ارزیابی شد. برای این منظور، لایه‌های دوم، چهارم و ششم حاوی دارو مابین لایه‌های فاقد دارو قرار گرفتند. مورفولوژی سطح و ساختار شیمیایی نانوالیاف فاقد دارو و حاوی دارو به‌ترتیب به‌کمک میکروسکوپ الکترونی روبشی و طیف‌سنجی مادون ‌قرمز ارزیابی شد. نرخ رهایش دارو در محلول بافر فسفات سالین (4/7=pH) و غلظت داروی آزادشده با استفاده از روش اسپکتروفتومتری محاسبه شد. خواص مکانیکی نمونه‌های تک و چندلایه نیز اندازه‌گیری شد. تصاویر میکروسکوپ الکترونی روبشی تولید الیاف یکنواخت و بدون دانه را نشان داد. طیف مادون‌قرمز نمونه‌ها حضور دارو در مخلوط پلیمری بدون هیچ نوع برهم‌کنشی را تأیید کرد. نتایج حاکی از آن بود که با افزایش مقدار کیتوسان، ساختاری شکننده تشکیل شده و درصد ازدیاد طول کاهش می‌یابد. رهایش دو داروی متوتروکسات و 5- فلوئوروراسیل در محیط خنثی به‌مدت 26 روز بررسی شد و نتایج بیانگر یک رهایش آرام و پایدار بود.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating the Release of Methotrexate and 5-Fluorouracil Anticancer Drugs from Multi-Layered Nanofiber Structure of Polycaprolactone/Chitosan

نویسندگان [English]

  • N. Poursharifi 1
  • D. Semnani 1
  • P. Soltani 1
  • S. Amanpour 2
1 1- Department of Textile Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
2 2- Cancer Biology Research Center, Tehran University of Medical Sciences, Tehran 14176-53761, Iran.
چکیده [English]

In this study, seven-layer nanofiber structures consisting of polycaprolactone/ chitosan polymers loaded with methotrexate and 5-fluorouracil anti-cancer drugs, for controlled drug delivery, were produced and evaluated. For this purpose, the second, fourth and sixth layers were loaded with drug and placed between the drug-free layers. The surface morphology of drug-free and drug-loaded nanofibers was investigated by scanning electron microscopy (SEM) and Fourier transform infrared spectrometry (FTIR) was used to study their chemical structure. The drug release rate in phosphate buffered saline (pH=7.4) and the released drug concentration were measured by spectrophotometry. Mechanical properties of single- and multi-layered samples were also investigated. SEM images showed formation of uniform and beadless fibers. FTIR spectrum confirmed presence of the drugs in the polymer mixture with no interaction. It was found that by increasing the chitosan content, a brittle structure with decreased elongation is formed. The release behavior of methotrexate and 5-Fluoracil drugs in neutral pH environment for 26 days was evaluated and the results exhibited a slow and sustained release.

کلیدواژه‌ها [English]

  • Drug delivery
  • Nanofibers
  • Polycaprolactone
  • Chitosan
  • 5-Fluorouracil
  • Methotrexate
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