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Radiation therapy is a frontline treatment option for cancer patients; however, the effects of radiotherapy on non-tumor tissue (e.g. radiation-induced dermatitis) often worsen patient quality of life. Previous studies have implicated the importance of redox balance in preventing dermatitis, specifically in reference to modulation of the nuclear factor (erythroid-derived 2)-like 2 (NRF2) signaling pathway. Due to the cytoprotective functions of transcriptional target genes of NRF2, we investigated how modulation of NRF2 expression could affect DNA damage, oxidative stress, and cell viability in response to radiotherapy. Specifically, it was noted that NRF2 knockdown sensitized human skin keratinocytes to ionizing radiation; likewise, genetic ablation of NRF2 in vivo increased radiosensitivity of murine epidermis. Oppositely, pharmacological induction of NRF2 via the apocarotenoid bixin lowered markers of DNA damage and oxidative stress, while preserving viability in irradiated keratinocytes. Mechanistic studies indicated that topical pretreatment using bixin as an NRF2 activator antagonized initial DNA damage by raising cellular glutathione levels. Additionally, topical application of bixin prevented radiation-induced dermatitis, epidermal thickening, and oxidative stress in the skin of SKH1 mice. Overall, these data indicate that NRF2 is critical for mitigating the harmful skin toxicities associated with ionizing radiation, and that topical upregulation of NRF2 via bixin could prevent radiation-induced dermatitis.
Since old animals are known to accumulate lipids in some organs, we compared effects of fenofibrate (FN) on systemic lipid metabolism, activity of liver marker enzymes and structure in young and old rats.

Young and old rats were fed chow supplemented with 0.1 % or 0.5 % FN. After 30 days, intraperitoneal glucose tolerance test (IPGTT) was performed, and blood and liver samples were collected.

In young rats, 0.1 % FN, but not 0.5 % FN, decreased serum Chol by 74 %, and did not affect TG levels at either doses. In old rats, 0.5 % FN, but not 0.1 % FN, decreased Chol and TG level by 56 % and 49 %, respectively. BMH21 In young rats, 0.1 % and 0.5 % FN increased serum activity of ALP by 227 % and 260 %, respectively, and did not affect AST and ALT activities. In old rats, only 0.5 % FN increased serum ALP activity by 150 %, respectively. In old rats, neither dose of FN affected serum AST activity, and only 0.5 % FN increased serum ALT activity by 200 %. The histological examination of liver structure revealed that both doses of FN impaired lobular architecture, expansion of bile canaliculi, and degeneration of parenchymal cells with the presence of cells containing fat droplets; administration of FN increased area occupied by collagen fibers.

Although 0.5 % FN decreased serum Chol concentration, it increased serum ALP activity and impaired liver structure in both in both age groups of rats. Thus, FN treatment should be under the control of liver function, especially in older patients.
Although 0.5 % FN decreased serum Chol concentration, it increased serum ALP activity and impaired liver structure in both in both age groups of rats. Thus, FN treatment should be under the control of liver function, especially in older patients.Aqueous phase (AP) recirculation is attracting increasing interest in hydrothermal process field as it has the potential to increase the yield of bio-crude and/or hydrochar and decrease the cost of hydrothermal wastewater disposal. This work summarizes the effect of AP recirculation on hydrothermal processing biomass, including the discussions on the mechanisms account for the increased yield and the changing properties of the hydrochar and bio-crude. However, the application of AP recirculation in hydrothermal process is limited by the enrichment of nitrogen in bio-crude and the applicability of only specific biomass type. To alleviate these limitations, the feasibility of combining AP recirculation with other strategies (e.g., co-solvent and co-feed) has been discussed. The possibility of using AP as a resource (e.g., nutrient source, and material mediator) can be increased by AP recirculation due to the accumulation of substances.Facing fossil fuels consumption and its accompanying environmental pollution, macroalgae, as a major part of the third-generation (3G) biomass, has great potential for bioenergy development due to its species-abundant, renewable and carbohydrate-rich properties. Diluted acid treatment is one of the most effective approaches to releasing fermentable sugars from macroalgal biomass in a short period, but the optimal conditions need to be explored to maximize the hydrolytic yield for the subsequent microbial conversion. Therefore, this review aims to summarize the latest advances in various acids and other auxiliary methods adopted to increase the hydrolytic efficiency of macroalgae. Following an overview of the strategies of different algal types, methods involved in the bioconversion of biofuels and microbial fuel cells (MFC) from algal hydrolysates are also described. For the 3G biorefinery development, the review further discusses key challenges and trends for future utilizing marine biomass to achieve the large-scale industrial production.The bioanode of mixed consortia was for the first time used to in-situ synthesize iron sulfide nanoparticles in a microbial fuel cell (MFC) over a long-term period (46 days). These poorly crystalline nanoparticles with an average size of 29.97 ± 7.1 nm, comprising of FeS and FeS2, significantly promoted extracellular electron transfer and thus the electricity generation of the MFC. A maximum power density of 519.00 mW/m2 was obtained from the MFC, which was 1.92 times as high as that of the control. The cell viability was promoted by a small amount of iron sulfide nanoparticles but inhibited by the thick nanoparticle "shell" covered on the bacterial cells. Some electroactive and sulfur reducing bacteria (eg. Enterobacteriaceae, Desulfovibrio, and Geobacter) were specifically enriched on the anode. This study provides a novel insight for improving the performance of bioelectrochemical systems through in-situ sustainable nanomaterials biofabrication by mixed consortia.
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