1. Saxitoxin Exposure Confirmed by Human Urine and Food Analysis
- Author
-
Elizabeth I. Hamelin, M Cooper, Geovannie Ojeda-Torres, Donna A. Fearey, Rebecca M. Coleman, Jerry D. Thomas, Rudolph C. Johnson, William Bragg, P McKinney, Louisa Castrodale, D Verbrugge, K Stryker, and E DeHart
- Subjects
0301 basic medicine ,Urinalysis ,Health, Toxicology and Mutagenesis ,Neosaxitoxin ,Physiology ,Urine ,Toxicology ,01 natural sciences ,Article ,Analytical Chemistry ,03 medical and health sciences ,chemistry.chemical_compound ,Tandem Mass Spectrometry ,Environmental Chemistry ,Medicine ,Animals ,Humans ,Shellfish Poisoning ,Paralytic shellfish poisoning ,Shellfish ,Chromatography, High Pressure Liquid ,Saxitoxin ,Chemical Health and Safety ,medicine.diagnostic_test ,business.industry ,010401 analytical chemistry ,Solid Phase Extraction ,medicine.disease ,0104 chemical sciences ,Shellfish poisoning ,Bivalvia ,030104 developmental biology ,chemistry ,Toxicity ,Female ,business ,Food Analysis - Abstract
A case of an elderly female with suspected paralytic shellfish poisoning (PSP) is presented. The patient shared a meal of recreationally-harvested shellfish with her family and soon began to experience nausea and weakness. She was taken to the local emergency department and then transported to a larger hospital in Anchorage where she was admitted to the intensive care unit with respiratory depression and shock. Her condition improved, and she was discharged from the hospital 6 days later. No others who shared the meal reported symptoms of PSP. A clam remaining from the meal was collected and analyzed for paralytic shellfish toxins (PST) by the Alaska Department of Environmental Conservation Environmental Health Laboratory; the clam tested positive for saxitoxin (STX; 277 μg/100 g), neosaxitoxin (NEO; 309 μg/100 g), multiple gonyautoxins (GTX; 576-2490 μg/100 g), decarbamoyl congeners (7.52-11.3 μg/100 g) and C-toxins (10.8-221 μg/100 g) using high-pressure liquid chromatography with post-column oxidation (AOAC Method 2011.02). Urine from the patient was submitted to Centers for Disease Control for analysis of selected PSTs and creatinine. STX (64.0 μg/g-creatinine), NEO (60.0 μg/g-creatinine) and GTX1-4 (492-4780 μg/g-creatinine) were identified in the urine using online solid phase extraction with HPLC and tandem mass spectrometry. This was the first time GTX were identified in urine of a PSP case from Alaska, highlighting the need to include all STX congeners in testing to protect the public's health through a better understand of PST toxicity, monitoring and prevention of exposures.
- Published
- 2017