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that low health literacy is common and we need more ways to address it in surgery. ©2020 Chang, Baker, Dos Santos Marques, et al.BACKGROUND Health literacy is a significant determinant of health behaviors, but the pathways through which health literacy influences health behaviors are not completely clear nor consistent. The purpose of this systematic review is to critically appraise studies that have empirically tested the potential pathways linking health literacy to health behavior. METHODS We performed searches of the electronic databases PubMed, Embase, and CINAHL to identify studies that proposed a conceptual framework and empirically tested the proposed mechanism through which health literacy influences certain health behaviors. Twenty eligible studies were included for analysis. KEY RESULTS The 20 studies addressed various health behaviors chronic disease self-management (n = 8), medication adherence (n = 2), overall health status (n = 4), oral care (n = 1), cancer screening (n = 1), shared decision-making (n = 1), health information sharing (n = 1), physical activity and eating behaviors (n = 1), and emergency department visitsealth literacy models can serve as the conceptual basis for developing effective health interventions to improve health behaviors and ultimately decrease the burden of disease in such vulnerable populations. [HLRP Health Literacy Research and Practice. 2020;4(1)e21-e44.] PLAIN LANGUAGE SUMMARY This review systemically compiles, and critically appraises 20 existing studies that test conceptual frameworks that propose potential pathways through which health literacy affects health behaviors. The findings from this review can help inform the development of health literacy-focused interventions to improve the health behaviors of populations with disease burdens. ©2020 Cudjoe, Delva, Cajita, et al.The discovery of non-fish sources of polyunsaturated fatty acids (PUFAs) is of great biotechnological importance. Although various oleaginous microalgae and fungi are able of accumulating storage lipids (single cell oils-SCOs) containing PUFAs, the industrial applications utilizing these organisms are rather limited due to the high fermentation cost. However, combining SCO production with other biotechnological applications, including waste and by-product valorization, can overcome this difficulty. In the current review we present the major sources of fungi (i.e. members of Mucoromycota, fungoid-like Thraustochytrids and genetically modified strains of Yarrowia lipolytica) and microalgae (e.g. Isochrysis, Nannochloropsis, Tetraselmis etc) that have come recently to the forefront due to their ability to produce PUFAs. Approaches adopted in order to increase PUFA productivity and the potential of using various residues, such as agro-industrial, food and aquaculture wastes as fermentation substrates for SCO production have been considered and discussed. We concluded that several organic residues can be utilized as feedstock in the SCO production increasing the competitiveness of oleaginous organisms against conventional PUFA producers. © FEMS 2020.BACKGROUND Validated biomarkers to evaluate HIV-1 cure strategies are currently lacking, therefore requiring analytical treatment interruption (ATI) in study participants. Little is known about the safety of ATI and its long-term impact on patient health. OBJECTIVES ATI safety was assessed and potential biomarkers predicting viral rebound were evaluated. METHODS PBMCs, plasma and CSF were collected from 11 HIV-1-positive individuals at four different timepoints during ATI (NCT02641756). Total and integrated HIV-1 DNA, cell-associated (CA) HIV-1 RNA transcripts and restriction factor (RF) expression were measured by PCR-based assays. Markers of neuroinflammation and neuronal injury [neurofilament light chain (NFL) and YKL-40 protein] were measured in CSF. Additionally, neopterin, tryptophan and kynurenine were measured, both in plasma and CSF, as markers of immune activation. RESULTS Total HIV-1 DNA, integrated HIV-1 DNA and CA viral RNA transcripts did not differ pre- and post-ATI. Similarly, no significant NFL or YKL-40 increases in CSF were observed between baseline and viral rebound. Furthermore, markers of immune activation did not increase during ATI. Interestingly, the RFs SLFN11 and APOBEC3G increased after ATI before viral rebound. 4-PBA nmr Similarly, Tat-Rev transcripts were increased preceding viral rebound after interruption. CONCLUSIONS ATI did not increase viral reservoir size and it did not reveal signs of increased neuronal injury or inflammation, suggesting that these well-monitored ATIs are safe. Elevation of Tat-Rev transcription and induced expression of the RFs SLFN11 and APOBEC3G after ATI, prior to viral rebound, indicates that these factors could be used as potential biomarkers predicting viral rebound. © The Author(s) 2020. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved. For permissions, please email journals.permissions@oup.com.Pancreatic cancer is a highly fatal malignancy for which surgery is currently considered to be the only curative treatment. However, less than a quarter of patients have disease amenable to definitive surgical resection. Local treatment with radiation therapy is a promising alternative to surgery for those patients with unresectable disease. However, conventional radiation techniques with computed tomography (CT) - guided therapy have yielded disappointing results due to the inability to deliver ablative doses of ionizing radiation, while sparing the radiosensitive adjacent organs at risk. Magnetic resonance guided radiotherapy (MRgRT) has emerged as an alternative to CT-guided radiation treatment which allows for the delivery of higher doses of radiation with low toxicity to surrounding structures. Further study into the use of MRgRT and dose escalation for locally advanced unresectable pancreatic cancer is needed. © The Author(s) 2020. Published by Oxford University Press on behalf of the Society of Toxicology. All rights reserved. For permissions, please email journals.permissions@oup.com.