The metabonomic approach has been widely used in toxicology to investigate mechanisms of toxicity. In the present study alterations in the metabolic profiles, monitored by (1)H-NMR spectroscopy, on serum samples in acetaminophen (APAP)-induced liver injury in rabbits were examined. Furthermore, the effect of the established antidote N-acetylcysteine (NAC) and the proposed antidotes silybinin (SIL), cimetidine (CIM) and SIL/CIM was also investigated. A single dose of APAP (2 g kg(-1) b.w., i.g.) was administered to rabbits and APAP combined with the antidotes SIL, CIM and NAC. Animals were sacrificed at 24 h post-APAP treatment. Healthy untreated animals served as controls. (1)H-NMR spectra of serum samples were acquired and underwent principal component analysis (PCA). Acute liver injury was verified by histopathological examination and the alterations of serum biochemical enzymes AST and ALT. (1)H-NMR spectroscopy revealed variations in the serum metabolic profile of APAP-intoxicated rabbits compared with controls. Co-administration of APAP with NAC, CIM and SIL + CIM seems to ameliorate the metabolic profile of animals compared with simply APAP-treated ones. In this study, the model of APAPinduced liver injury was successfully described using the (1)H-NMR based metabonomic approach in serum. Furthermore, the use of antidotes that reduced the toxic insult was also recorded using this technique. The combination of NMR spectroscopy and PCA is a rapid methodology, capable of detecting alterations in the metabolic profile, and produces adequate models that could be used for the characterization of unknown samples, both experimental and clinical, reinforcing its future use in clinical settings.

One of the factors to influence abandoning breastfeeding is mothers' use of medications. The www. e-lactancia.org website is a reliable source in Spanish and English for online free-access information about the compatibility of medications with breastfeeding. The aim of this study was to analyse the search profiles, and groups and products, searched the most on this website. Materials and methods: A retrospective and descriptive study of the e-lactancia.org website during 2014-2018. Google Analytics was used for data collection. The following variables were analysed: number of users and queries; professional profile; country; language; users' and groups' access modes/devices; most searched products. Results: We found 16,821.559 users and 63,783.866 pages. Of users, 62.7 % were "mother/father", and 31.9 % were health professionals. Visits came mostly from: Spain (25.86 %); Mexico (16.87 %); Argentina (7.99 %); Chile (7.31 %). The preferred access mode and device were organic searches (62.1 %) and mobile phones (73.4 %), respectively. Phytotherapy (14.4 %), antibacterial agents (12.3 %) and NSAIDs (12.3 %) were the most searched groups, and ibuprofen (6.25 %) was the most popular product. Conclusion: Users and consultations in e-lactation increased significantly during the study period. Mothers/fathers were the main website users, followed by health professionals. The main consulted groups were antibacterial agents, NSAIDs and systemic phytotherapy. Ibuprofen, paracetamol and amoxicillin stood out as the most consulted products. These results revealed increase Internet resources use to solve parents and health professionals' breastfeeding doubts. Future research should study how users (parents, health professionals) interact with this information.

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