Thu, Mar 11 | Zoom Webinar

O2M Webinar: Mrignayani Kotecha, Ph.D.

Oxygen Imaging of Biomaterials with Emphasis on Islet Encapsulation Devices
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O2M Webinar: Mrignayani Kotecha, Ph.D.


Mar 11, 11:00 AM – 12:00 PM CST
Zoom Webinar


Moderated by: Carl G. Simon, Jr., Ph.D. National Institute of Standards & Technology

About the Speaker: Dr. Kotecha graduated the physics program from Jabalpur University, India in solid state NMR of quadrupolar nuclei in 2001. She was also a full-time tenured professor of Physics from 1993-2001 at Government Science College, Jabalpur that is one of the oldest and most prestigious educational institutes in central India established by the British in 1836. After graduation, she was awarded the prestigious SERC Visiting scientist fellowship by the Department of Science and Technology, Govt. of India to join the group of Prof. Anil Kumar at India’s top research Institute, Indian Institute of Science (IISc), Bangalore. After IISc, she worked as a visiting scientist at Weizmann Institute of Science, Israel and the University of Duisburg-Essen, Germany. In 2010 with a grant from NIH, she joined Department of Bioengineering to work on noninvasive MRI assessment of engineered cartilage tissue as a research faculty in the group of Prof. Richard Magin. In 2017, she co-founded O2M Technologies to bring the EPR oxygen imaging technology to the market.

Dr. Kotecha is an expert in multinuclear magnetic resonance. She is an expert in magnetic resonance methodology, instrumentation, pulse sequence design, and applications of MRS/MRI to biomaterials, engineered tissues, nanoparticles, membrane proteins, cryolites, ferroelectrics, and cancer. She is an author of more than 40 publication and the lead editor of 2017 Wiley book “Magnetic Resonance in Tissue Engineering”. She developed an ASTM International standard F3224-17 “Standard Test Method for Evaluating Growth of Engineered Cartilage Tissue using Magnetic Resonance Imaging” that received CDRH recognition in 2019.

About the Webinar: The lack of oxygen supply to the highly metabolic pancreatic islet cells is one of the major factors contributing to the failure of islet transplantation devices targeting the cure of type I diabetes (T1D). The loss of islets due to hypoxia is common in almost all modes of islet transplantation- micro-encapsulation devices, macro-encapsulation devices, and tissue-grafts transplantation. Several approaches to improve oxygenation in these transplantation devices are thus being tested. However, because of the lack of available technologies to provide oxygen partial pressure (pO2) assessment in and around devices, the progress is severely hindered.

O2M Technologies’ platform non-invasive Oxygen Imaging technology has the potential to guide the development of islet cell transplantation therapies by providing real-time high accuracy pre- and post-implantation pO2 maps in and around devices in vitro and in vivo. O2M’s preclinical small animal oxygen imager, JIVA-25, provides average pO2values in sample volumes (up to 40 mm) as well as three-dimensional pO2maps with high spatial (0.5 mm, isotropic), temporal (1-10 min), and pO2(1-3 torr) resolution. For reporting oxygen concentration, JIVA-25 uses oxygen-dependent relaxation rates of trityl radicals OX063 or its deuterated version OX071. This work is the outcome of JDRF-supported “Oxygen Measurement Core” facility established at O2M Technologies in 2019. We performed in vitro and in vivo pO2 measurements of acellular and cell loaded islet cell transplantation devices. These devices vary in shape, size, biomaterials, and oxygen profile. She will present the key data from these measurements as part of the webinar.

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