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Betty S. Chan

3 papers in the library · publishing 2021-2026

Papers

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Relationships among nitrous oxide exposure, neurological injury and biomarkers.

British Journal of Clinical Pharmacology July 20, 2026 Laxna Bhujel, Angela L. Chiew, Bhashita Jagarlamudi et al.

Recreational nitrous oxide (N2O) misuse is an increasing public health problem associated with functional cobalamin (B12) deficiency and severe neurological complications. Despite growing recognition of its harms, the dose-response relationship and clinical value of biomarkers remain unclear. This study aimed to characterize the demographics, patterns of use, outcomes, and biomarker utility in...

DOI: 10.1002/bcp.70699 (opens in new tab) Full text (opens in new tab) Biomarkers Laughing gas Neurotoxicity Nitrous oxide

A cluster of lysergic acid diethylamide (LSD) poisonings following insufflation of a white powder sold as cocaine.

Clinical Toxicology November 2021 Darren M Roberts, Kulanka H Premachandra, Betty S. Chan et al.

Adulteration, substitution or contamination of illicit substances can have clinically significant implications when other illicit substances are included. Such circumstances can present as clusters of poisonings, including severe toxicity and death following exposure to unexpected illicit substances. We report a cluster of laboratory-confirmed lysergic acid diethylamide (LSD) in a powder that...

Dose--Response Relationships Between Nitrous Oxide Exposure, Biomarkers, and Neurological Injury

Laxna Bhujel, Angela L. Chiew, Bhashita Jagarlamudi et al.

Aims: Recreational nitrous oxide (N 2 O) misuse is a growing problem. It can cause functional hydroxycobalamin (B 12 ) deficiency and severe neurological complications. Despite increasing harms, the dose-response relationship and clinical value of biomarkers remain unclear. This study aimed to characterise the demographics, patterns of use, outcomes, and biomarker utility in patients...