Ismat Ullah

Mr. Ismat Ullah

Suzhou Institute of Nano-tech and Nano-bionics, Suzhou, Anhui, China
orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 October 2019 in Materials & Design
Verified
Journal Article
Open access
WZWancheng Zhang
Wancheng Zhang
Ismat UllahIsmat Ullah
Ismat Ullah
LSLei Shi
Lei Shi
YZYu Zhang
Yu Zhang
HOHao Ou
Hao Ou
WLWenchao Li
Wenchao Li

31 May 2019 in Biofabrication
Verified
Journal Article
Closed access
PDF file
LSLei Shi
Lei Shi
YHYiqiang Hu
Yiqiang Hu
Muhammad Wajid UllahMuhammad Wajid Ullah
Muhammad Wajid Ullah
Ismat UllahIsmat Ullah
Ismat Ullah
HOHao Ou
Hao Ou
Xianglin ZhangXianglin Zhang
Xianglin Zhang
A novel strategy of cryogenic 3D bioprinting assisted by free-from extrusion printing has been developed and applied to printing of a decellularized small intestinal submucosa (dSIS) slurry. The rheological properties, including kinetic viscosity, storage modulus (G′), and loss modulus (G″), were appropriate for free-from extrusion printing of dSIS slurry. Three different groups of scaffolds, including P 500 , P 600 , and P 700 , with filament distances of 500, 600, and 700 μ m, respectively were fabricated at a 5 mm s −1 working velocity of the platform ( V xy ) and 25 kPa air pressure of the dispensing system ( P ) at −20 °C. The fabricated scaffolds were crosslinked via 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) which resulted in a polyporous microstructure. The variations in the filament diameter and pore size were evaluated in the initial frozen state after printing, the lyophilized state, and after immersion in a PBS solution. The Young’s modulus of the P 500 , P 600 , and P 700 scaffolds was measured in wet and dry states for EDC-crosslinked scaffolds. The cell experiment results showed improved cell adhesion, viability, and proliferation both on the surface and within the scaffold, indicating the biocompatibility and suitability of the scaffold for 3D cell models. Further, gene and protein expression of normal skin fibroblasts on dSIS scaffolds demonstrated their ability to promote the production of some extracellular matrix proteins (i.e. collagen I, collagen III, and fibronectin) in vitro . Overall, this study presents a new potential strategy, by combining cryogenic 3D bioprinting with decellularized extracellular matrix materials, to manufacture ideal scaffolds for skin tissue engineering applications.

1 May 2020 in Materials Science and Engineering: C
Verified
Journal Article
Closed access
Ismat UllahIsmat Ullah
Ismat Ullah
WZWancheng Zhang
Wancheng Zhang
LYLiang Yang
Liang Yang
Muhammad Wajid UllahMuhammad Wajid Ullah
Muhammad Wajid Ullah
OAOmar Mohammad Atta
Omar Mohammad Atta
Xianglin ZhangXianglin Zhang
Xianglin Zhang

2 December 2019 in ACS Biomaterials Science & Engineering
Verified
Journal Article
Closed access
Ismat UllahIsmat Ullah
Ismat Ullah
AGAntonio Gloria
Antonio Gloria
WZWancheng Zhang
Wancheng Zhang
Muhammad Wajid UllahMuhammad Wajid Ullah
Muhammad Wajid Ullah
BWBin Wu
Bin Wu
XZXianglin Zhang
Xianglin Zhang

1 December 2018 in Ceramics International
Verified
Journal Article
Closed access
Ismat UllahIsmat Ullah
Ismat Ullah
WLWenchao Li
Wenchao Li
SLShi Lei
Shi Lei
YZYu Zhang
Yu Zhang
WZWancheng Zhang
Wancheng Zhang
XZXianglin Zhang
Xianglin Zhang

3 March 2022 in Chemical Engineering Journal
Verified
Journal Article
Closed access
Zahid HussainZahid Hussain
Zahid Hussain
Ismat UllahIsmat Ullah
Ismat Ullah
XLXingzhu Liu
Xingzhu Liu
WSWenqi Shen
Wenqi Shen
PDPi Ding
Pi Ding
RPRenjun Pei
Renjun Pei