Helping to destigmatise the use of period products for trans, masculine presenting, non-binary and gender diverse (TMNG) consumers through an inclusive communication design framework.

This study aimed to understand the experiences that trans, masculine presenting, non-binary and gender diverse (TMNG) people who menstruate have with period product packaging and marketing, and identified opportunities for improvement through an inclusive communication design framework. Semi-structured online interviews were conducted with nine TMNG consumers, allies and advocates. These revealed positive and negative experiences with the current design of period product packaging and marketing throughout the entire 'user journey', including purchasing, use and disposal. A thematic analysis of the interviews confirmed that problems exist with the lack of representation through imagery and language on period product packaging and marketing. The resulting three themes were engaged with to develop an inclusive communication design framework that included: the need for an improvement in the physical experience of periods; the need for improved mental health and emotional relationship to periods; and the need for the consideration of broader social issues such as sustainability and accessibility in relation to period product packaging and marketing.

Assessing the Impact of Polyethylene Nano/Microplastic Exposure on Human Vaginal Keratinocytes.

The global rise of single-use throw-away plastic products has elicited a massive increase in the nano/microplastics (N/MPLs) exposure burden in humans. Recently, it has been demonstrated that disposable period products may release N/MPLs with usage, which represents a potential threat to women's health which has not been scientifically addressed yet. By using polyethyl ene (PE) particles (200 nm to 9 µm), we showed that acute exposure to a high concentration of N/MPLs induced cell toxicity in vaginal keratinocytes after effective cellular uptake, as viability and apoptosis data suggest, along with transmission electron microscopy (TEM) observations. The internalised N/MPLs altered the expression of junctional and adherence proteins and the organisation of the actin cortex, influencing the level of genes involved in oxidative stress signalling pathways and that of miRNAs related to epithelial barrier function. When the exposure to PE N/MPLs was discontinued or became chronic, cells were able to recover from the negative effects on viability and differentiation/proliferation gene expression in a few days. However, in all cases, PE N/MPL exposure prompted a sustained alteration of DNA methyltransferase and DNA demethylase expression, which might impact epigenetic regulation processes, leading to accelerated cell ageing and inflammation, or the occurrence of malignant transformation.