Lijun Xu

Dr. Lijun Xu


Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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24 March 2022 in Metabolites
Verified
Journal Article
Open access
PDF file
BYBo Ye
Bo Ye
JLJian Li
Jian Li
LXLijun Xu
Lijun Xu
HLHuankai Li
Huankai Li
MYManjun Yang
Manjun Yang
Black soldier fly (Hermetia illucens) larvae meal have been used as feed protein supplements in fish feed, but few researches have investigated the metabolomic effects of Hermetia illucens larvae meal supplements. Therefore, the metabolic effects on Nile tilapia were investigated by replacing 5%, 10%, and 20% of the dietary soybean meal in the basal diet with Hermetia illucens larvae meal, respectively. This study shows that 20% H. illucens larvae meal feed could promote tilapia average daily gain of upto 5.03 ± 0.18 g (mean ± SEM). It was found that the tricarboxylic acid cycle efficiency was improved by activating the enzymes of mitochondrial isocitrate dehydrogenase, NAD-malate dehydrogenase, succinate dehydrogenase, pyruvate dehydrogenase, and α-ketoglutarate dehydrogenase, which then increased the output of ATP and NADH. Furthermore, amino acid and protein biosynthesis was boosted by enhanced glutamine synthetase and glutamate synthase. In particular, GSH increased with increased H. illucens larvae meal. Unsaturated fatty acid biosynthesis was stimulated by higher levels of fatty acid synthase and acetyl CoA carboxylase. Additionally, there was no significant change in lipase levels. Thus, the higher acetyl Co-A content was primarily involved in fatty acid biosynthesis and energy metabolism. Flavor substances, such as nonanal and 2-methyl-3-furanthiol, also accumulated with the addition of H. illucens larvae meal, which increased the umami taste and meat flavor. Additionally, the flavor of tilapia was improved owing to a decrease in trimethylamine content, which causes an earthy and fishy taste. This study uncovers a previously unknown metabolic effect of dietary H. illucens larvae meal on Nile tilapia.

1 January 2013 in Journal of Trauma and Acute Care Surgery
Verified
Journal Article
Closed access
WGWu Gang
Wu Gang
XLXiao Limin
Xiao Limin
WYWang Yang
Wang Yang
WZWang Zhanzhi
Wang Zhanzhi
LXLijun Xu
Lijun Xu
This study aimed to examine the correlation between the alterations in serum sex hormones testosterone (T) and estradiol (E2) in the early stages after craniocerebral and extracranial injuries, to assess the Injury Severity Score (ISS) and Glasgow Coma Scale (GCS) score in patients with multiple injuries, and to investigate the significance of the posttrauma changes in ISS and GCS as well as their ratio. The serum levels of T and E(2) in 95 patients with multiple injuries in the early stages after trauma (within 24 hours) were determined by radioimmune double-antibody method. All the patients were classified by ISS, and among them, those complicated with craniocerebral injury were classified by GCS. The serum sex hormone levels and their ratio in the patients with trauma were compared with those in the control group consisting of 15 healthy persons. In patients with multiple injuries, in the early stage after injury, the serum T level decreased in proportion with the severity of the trauma, whereas the E2 level increased. There was a significant difference in T, E(2), and the ratio of E(2) and T in the severely traumatic group (ISS > 25) as compared with the other groups (p < 0.01). Among the groups complicated with craniocerebral injury that were classified by GCS, there were significant differences in the groups of 5 ≥ GCS ≥ 3 and 8 ≥ GCS > 5, compared with the control group (p < 0.01). The alterations in the serum sex hormones T and E2 levels and their ratio is correlated with the severity of trauma and craniocerebral injury and, thus probably, could serve as an indicator for the evaluation of the trauma severity and possibly in prognosis. Prognostic study, level III.

31 January 2022 in International Journal of Genomics
Verified
Journal Article
Open access
PDF file
CZCaixia Zhang
Caixia Zhang
LXLijun Xu
Lijun Xu
JLJian Li
Jian Li
JCJiansong Chen
Jiansong Chen
MYManjun Yang
Manjun Yang
The fruiting bodies or mycelia of Hericium coralloides (H. coralloides) contain many physiologically active compounds that are used to treat various diseases, including cardiovascular disorders and cancers. However, the genome of H. coralloides has not been sequenced, which hinders further investigations into aspects, such as bioactivity or evolutionary events. The present study is aimed at (i) performing de novo sequencing of the assembled genome; (ii) mapping the reads from PE400 DNA into the assembled genome; (iii) identifying the full length of all the repeated sequences; and (iv) annotating protein-coding genes using GO, eggNOG, and KEGG databases. The assembled genome comprised 5,59,05,675bp, including 307 contigs. The mapping rate of reads obtained from PE400 DNA in the assembled genome was 92.46. We identified 2,525 repeated sequences of 14,23,274bp length. We predicted ncRNAs of 48,895bp and 11,736 genes encoding proteins that were annotated in the GO, eggNOG, and KEGG databases. We are the first to sequence the entire H. coralloides genome (NCBI; Assembly: ASM367540v1), which will serve as a reference for studying the evolutionary diversification of edible and medicinal mushrooms and facilitate the application of bioactivity in H. coralloides.