Project description:Total fatty-acid (FA) contents of different organs (stomach, liver, brain, and skin) of two Antarctic fish, marbled rockcod (Notothenia rossii) and mackerel icefish (Champsocephalus gunnari), were examined using gas chromatography-mass spectrometry (GC-MS). N. rossii possessed higher contents of total omega-3, where eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), the most represented omega-3 FAs, were distributed throughout all parts of the fish. The highest level of EPA was observed in the skin and that of DHA was observed in the brain of N. rossii. C. gunnari showed organ peculiarity in that most of the omega-3 FAs were found in stomach and skin. Specifically, the highest levels of EPA and DHA were both observed in the stomach. Although N. rossii and C. gunnari both inhabit the Antarctic Southern Oceans, their characteristics in terms of the composition of fatty acids were shown to vary. The extracts were also evaluated for matrix metalloproteinase-1 (MMP-1)-inhibitory activities in UVB-induced human dermal fibroblasts, where extracts of the skin and liver of N. rossii showed the most significant inhibition upon MMP-1 production. These findings provide experimental evidence that the extracts of the Antarctic fish could be utilized as bioactive nutrients, particularly in the enhancement of skin health.
| S-EPMC9317339 | biostudies-literature
Project description:Characterization of the Gut Microbiota of Mackerel Icefish, Champsocephalus gunnari
Project description:Ribosome profiling (RiboSeq) (maps positions of translating ribosomes on the transcriptome) and RNASeq (quantifies the transcriptome) analysis of murine 17 clone 1 (17Cl-1) cells infected with Murine coronavirus strain A59 (MHV-A59). Samples comprise 1 and 8 h mocks, 1, 2.5, 5 and 8 h post infection timecourse, for each of RiboSeq with cycloheximide (CHX), RiboSeq with harringtonine (HAR), and RNASeq, performed in duplicate (6 x 3 x 2 libraries); RiboSeq CHX, RiboSeq HAR and RNASeq at 1 h post infection for high multiplicity of infection (3 libraries); and 1 \long-read\ library for 5 h post infection RiboSeq CHX to test for larger-than-normal ribosome footprints.
Project description:To determine the global impact of the clbn mutation on gene expression and efficiency of U2- and U12-type splicing, we analyzed the transcriptome of 108hpf wt and clbn mutant larvae by microarrays and RNA sequencing. RNAseq data was used to characterize intron retention of U2-type and U12-type intron on a genome-wide scale to confirm that rnpc3 deficiency specifically impairs U12-type splicing. RNAseq and microarray data were combined to yield high-confidence lists of differentially expressed genes which show that impaired U12-type splicing has a wide-ranging effect on the developing transcriptome. RNAseq libraries prepared from 108 hours post-fertilization zebrafish larvae (approx. 60 embryos each, genotyped homozygous wildtype and homozygous clbns841 mutants, respectively)
