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Full-Text Articles in Biomedical Engineering and Bioengineering
Progressive Hypoxia-On-A-Chip: An In Vitro Oxygen Gradient Model For Capturing The Effects Of Hypoxia On Primary Hepatocytes In Health And Disease, Young Bok Abraham Kang, Jinsu Eo, Beyza Bulutoglu, Martin L. Yarmush, O. Berk Usta
Progressive Hypoxia-On-A-Chip: An In Vitro Oxygen Gradient Model For Capturing The Effects Of Hypoxia On Primary Hepatocytes In Health And Disease, Young Bok Abraham Kang, Jinsu Eo, Beyza Bulutoglu, Martin L. Yarmush, O. Berk Usta
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
Oxygen is vital to the function of all tissues including the liver and lack of oxygen, that is, hypoxia can result in both acute and chronic injuries to the liver in vivo and ex vivo. Furthermore, a permanent oxygen gradient is naturally present along the liver sinusoid, which plays a role in the metabolic zonation and the pathophysiology of liver diseases. Accordingly, here, we introduce an in vitro microfluidic platform capable of actively creating a series of oxygen concentrations on a single continuous microtissue, ranging from normoxia to severe hypoxia. This range approximately captures both the physiologically relevant oxygen gradient …
Real-Time Analysis Of Brain Tumor Cell Dynamics: Novel Thermoelectric Detection Of L-Glutamate And Cell Metabolism Using Microfluidics, Siva Mahesh Tangutooru
Real-Time Analysis Of Brain Tumor Cell Dynamics: Novel Thermoelectric Detection Of L-Glutamate And Cell Metabolism Using Microfluidics, Siva Mahesh Tangutooru
Doctoral Dissertations
This study describes the design, fabrication and applications of a novel thermoelectric microfluidic bio-sensor. The bio-sensor is used for real time detection of the L-glutamate (L-glu) dynamics and metabolism for brain tumor cells immobilized in a microfluidic device. The microfluidic device is fabricated using a polymer/glass laminating technique (Xurography). An antimony-bismuth thin-film thermopile (primary sensing element) is integrated to the microfluidic device. The brain tumor cells are immobilized over the thermopile covering measuring and reference junctions of the thermopile using a poly-l-lysine coating layer. L-glutamate oxidase (L-GLOD) is immobilized over the measuring junctions of the thermopile prior to the immobilization …