Using the Slug Mucosal Irritation Assay to Investigate the Tolerability of Tablet Excipients on Human Skin in the Context of the Use of a Nipple Shield Delivery System

Attitudes toward a novel breastfeeding-mediated drug and nutrient delivery system: A qualitative study

The objective of this study was to determine the attitudes and impressions of breastfeeding mothers and healthcare practitioners towards a device concept integrating breastfeeding with infant drug and nutrient administration. This was an exploratory qualitative study involving 20 breastfeeding mothers and 6 healthcare practitioners from the Suffolk and Middlesex County areas of Massachusetts, USA each individually interviewed. Interview transcription of the semi-structured interviews by an independent service began during data collection, and data coding into major themes continued until and after data saturation was reached. Repeated medication delivery with a reusable product was highlighted as a potential use case for the device concept; ease of use and cleaning as well as cost, familiarity with the method, and infant response were identified as critical considerations. Participants questioned device suitability with liquid formulations (as opposed to non-liquid), while potential advantages over alternative medication delivery technology like oral syringes were identified, including a more "natural" feeling. Most participants had prior knowledge of, or personal experience with, devices like commercially available nipple shields. Attitudes towards the NSDS were not determined by experience with nipple shields, however. The participants' prior exposure to nipple shields is in contrast to related studies in Kenya and South Africa where commercial nipple shields were not widely known and where specific concerns surrounding potential community stigma to an unknown device were raised by participants.

Potential Mucosal Irritation Discrimination of Surface Disinfectants Employed against SARS-CoV-2 by Limacus flavus Slug Mucosal Irritation Assay

Preventive measures have proven to be the most effective strategy to counteract the spread of the SARS-CoV-2 virus. Among these, disinfection is strongly suggested by international health organizations' official guidelines. As a consequence, the increase of disinfectants handling is going to expose people to the risk of eyes, mouth, nose, and mucous membranes accidental irritation. To assess mucosal irritation, previous studies employed the snail Arion lusitanicus as the mucosal model in Slug Mucosal Irritation (SMI) assay. The obtained results confirmed snails as a suitable experimental model for their anatomical characteristics superimposable to the human mucosae and the different easily observed readouts. Another terrestrial gastropod, Limacus flavus, also known as " Yellow slug ", due to its larger size and greater longevity, has already been proposed as an SMI assay alternative model. In this study, for the first time, in addition to the standard parameters recorded in the SMI test, the production of yellow pigment in response to irritants, unique to the snail L. flavus, was evaluated. Our results showed that this species would be a promising model for mucosal irritation studies. The study conducted testing among all those chemical solutions most commonly recommended against the SARS-CoV-2 virus.