We report a case of rebounding severe methaemoglobinaemia secondary to sodium nitrite ingestion, despite several administrations of methylene blue. The patient's clinical course was characterised by a series of alternating improvements and deteriorations and proved challenging for treating clinicians. On discussion with poisoning experts, it was hypothesised that a small amount of sodium nitrite remained in the gastrointestinal tract leading to prolonged absorption of the causative agent. Methaemoglobin levels returned to normal following the administration of multi-dose activated charcoal via a nasogastric tube 30 h after the initial presentation to hospital.
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http://dx.doi.org/10.1002/anr3.12320 | DOI Listing |
Pharmaceuticals (Basel)
January 2025
Department of Microbiology, Virology and Immunology, I. Horbachevsky Ternopil State Medical University, 46001 Ternopil, Ukraine.
Prenatal hypoxia (PH) is a key factor in the development of long-term cardiovascular disorders, which are caused by various mechanisms of endothelial dysfunction (ED), including those associated with NO deficiency. This emphasizes the potential of therapeutic agents with NO modulator properties, such as Thiotriazoline, Angiolin, Mildronate, and L-arginine, in the treatment of PH. Pregnant female rats were given a daily intraperitoneal dose of 50 mg/kg of sodium nitrite starting on the 16th day of pregnancy.
View Article and Find Full Text PDFPlant Physiol Biochem
January 2025
Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
Melatonin (Mel) is a tryptophan-derived (N-acetyl-5-methoxytryptamine) molecule. In the present study, role of Mel in the regulation of various anaplerotic enzymes is discussed in relation to N metabolism and H-ATPase activity in mung bean under Cd stress. The application of Mel to the Cd-stressed mung bean seedlings was remarkable in improving the activity of hexokinase (35.
View Article and Find Full Text PDFFood Chem X
January 2025
College of Food Science and Engineering, Gansu Agricultural University, Lanzhou 730070, China.
The study investigated the impact of low-dose sodium nitrite on yak meat color and mitochondrial functional characteristics during the wet curing. The results showed that sodium nitrite significantly enhanced the redness ( value) of yak meat by increasing the activities of mitochondrial complexes I, II, III and IV, which are critical for electron transport and aerobic respiration. Additionally, sodium nitrite reduced mitochondrial swelling and membrane permeability, and slowed the production of lipid oxidation products, indicating protective effects against mitochondrial damage and preserving mitochondrial integrity.
View Article and Find Full Text PDFClin Chem Lab Med
January 2025
Department of Laboratory Medicine, 60200 Ghent University Hospital, Ghent, Belgium.
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