Gull Nafisa, Khan Shahzad Maqsood, Butt Osama Majeed, Islam Atif, Shah Attaullah, Jabeen Sehrish, Khan Saba Urooge, Khan Afrasyab, Khan Rafi Ullah, Butt Muhammad Taqi Zahid
Department of Polymer Engineering and Technology, University of the Punjab, Lahore, 54590, Pakistan.
UM Power Energy Dedicated Advanced Research Centre, University of Malaya, Malaysia.
Int J Biol Macromol. 2020 Nov 1;162:175-187. doi: 10.1016/j.ijbiomac.2020.06.133. Epub 2020 Jun 17.
Inflammation is a key challenge in the treatment of chronic diseases. Spurred by topical advancement in polymer chemistry and drug delivery, hydrogels that release a drug in temporal, spatial and dosage controlled fashion have been trendy. This research focused on the fabrication of hydrogels with controlled drug release properties to control inflammation. Chitosan and polyvinyl pyrrolidone were used as base polymers and crosslinked with epichlorohydrin to form hydrogel films by solution casting technique. Prepared hydrogels were analyzed by swelling analysis in deionized water, buffer and electrolyte solutions and gel fraction. Functional groups confirmation and development of new covalent and hydrogen bonds, thermal stability (28.49%) and crystallinity were evaluated by FTIR, TGA and WAXRD, respectively. Rheological properties including gel strength and yield stress, elasticity (2309 MPa), porosity (75%) and hydrophilicity (73°) of prepared hydrogels were also evaluated. In vitro studies confirmed that prepared hydrogels have good biodegradability, excellent antimicrobial property and admirable cytotoxicity. Drug release profile (87.56% in 130 min) along with the drug encapsulation efficiency (84%) of prepared hydrogels was also studied. These results paved the path towards the development of hydrogels that can release the drugs with desired temporal patterns.
炎症是慢性病治疗中的一个关键挑战。受聚合物化学和药物递送领域的局部进展推动,能够以时间、空间和剂量可控方式释放药物的水凝胶一直很流行。本研究聚焦于制备具有可控药物释放特性的水凝胶以控制炎症。壳聚糖和聚乙烯吡咯烷酮用作基础聚合物,并与环氧氯丙烷交联,通过溶液浇铸技术形成水凝胶薄膜。通过在去离子水、缓冲液和电解质溶液中的溶胀分析以及凝胶分数对制备的水凝胶进行分析。分别通过傅里叶变换红外光谱(FTIR)、热重分析(TGA)和广角X射线衍射(WAXRD)评估官能团确认以及新的共价键和氢键的形成、热稳定性(28.49%)和结晶度。还评估了制备的水凝胶的流变学性质,包括凝胶强度和屈服应力、弹性(2309兆帕)、孔隙率(75%)和亲水性(73°)。体外研究证实,制备的水凝胶具有良好的生物降解性、出色的抗菌性能和令人满意的细胞毒性。还研究了制备的水凝胶的药物释放曲线(130分钟内为87.56%)以及药物包封效率(84%)。这些结果为开发能够以所需时间模式释放药物的水凝胶铺平了道路。