BIO

Precious is a fourth-year Ph.D. student and a graduate researcher in the Sayes Group. She earned a B.S. in Chemistry from the University of Nigeria, Nsukka (2014), and an M.S. in Applied Physical Sciences with a concentration in Environmental Science from Georgia Southern University (2021). Her current research focuses on developing rapid and efficient alternative toxicity testing methods to screen environmentally relevant contaminants, to safeguard human health and the environment.

TECHNICAL SKILLS

• Cell Culture

• Nuclear Magnetic Resonance Spectroscopy

• Fourier Transform Infrared Spectroscopy

• Circular dichroism Spectroscopy

• Fluorescence Spectroscopy

• UV-Vis Spectroscopy

• Inductively Coupled Plasma Mass Spectrometry

• Scanning Electron Microscopy

MEMBERSHIPS

• Society of Toxicology

• American Chemical Society

•  National Organization for the Professional Advancement of Black Chemists and Chemical Engineers

•  Texas Society for Microscopy

•  The Honor Society of Phi Kappa Phi

 AWARDS

• 2nd Best Poster Presentation at the 58th Annual Texas Society for Microscopy (TSM) Meeting, San Marcos, TX (2024).

Publications

1. Obiako PC, Ayisire SO, Sayes CM. Impact of perfluorooctanoic acid (PFOA) and perfluorobutanoic acid (PFBA) on oxidative stress and metabolic biomarkers in human neuronal cells (SH-SY5Y). Environment International. 2024 Jul 2:108864.

2. Obiako P, Sevcik A, Sayes CM. Rapid enzymatic activity model (REAM) to decipher the toxic action of per-and polyfluoroalkyl substances. Food and Chemical Toxicology. 2023 Dec 1;182:114117.

3. Baldovinos Y, Obiako P, Collom C, Sayes CM. A vape condensate collection method for degradant identification and toxicity screening. Journal of Hazardous Materials Letters. 2024 Nov 1;5:100099.

4. Beard JM, Collom C, Liu JY, Obiako P, Strongin RM, Zavala J, Sayes CM. In vitro toxicity and chemical analysis of e-cigarette aerosol produced amid dry hitting. Toxicology. 2024 Jun 13:153865.