Résumé
Objective To analyze the difference of salivary microbiome between the patients with functional dyspepsia and healthy controls.Methods Saliva samples were collected from the patients with functional dyspepsia and healthy control.Genomic DNA of the samples was extracted,and the high-throughput sequencing technology was used to conduct DNA sequence of 16S rRNA-V4 region.Subsequently,all the data were performed by the bioinformatic analysis.Results The salivary microbiome in the functional dyspepsia group was dominated by Proteobacteria,while Bacteroidetes was the top microbiota in the heathy control group.In the functional dyspepsia group,the Chao1 index,ACE index,Shannon index and Simpson index were 1 295,1 351,4.93 and 0.90 respectively.In the healthy control group,the above indexes were 1 001,1 351,5.28 and 0.92 respectively.The PCoA ba sically separated the microbiome composition of the two groups.Sixteen kinds of microbiota were significantly different between two groups using linear discriminant analysis effect size tool,including Bacteroidetes,Prevotella,Prevotellaceae,Neisseria,Betaproteobacteria and Proteobacteria,etc.Conclusion Saliva in the patients with functional dyspesia has characteristic microbiome composition,which is dominated by Proteobacteria,but the richness and diversity between the two groups have no difference.Neisseria is one of the significantly different bacteria between the two groups.
Résumé
Transcription factor NF-κB has attracted attention due to its important role in the regulation of the expression of a number of cellular genes involved in host defense, inflammation/immune responses, cytokine and growth factor regulation, cell survival, proliferation, and also in embryonic development and programmed cell death. In this review, we provide an overview of established TNF-α, TLR/IL-1R, TCR and BCR signaling pathways to NF-κB, the alternative NF-κB pathway, and the regulation of NF-κB transcriptional activity. Furthermore, we discuss on emphasis the cross-talks between NF-κB and other signaling pathways (TGF-β, p53, nuclear receptor family, Ras/MEK/MAPK...), which are very complex and remain to be understood. The activation or inhibition of NF-κB has effect on other signaling pathways. They compose a complex signaling network, in which many regulatory signals integrate systematically and coordinate transcriptional responses to the stimulations. So when NF-κB is used as an important target of drugs in human diseases, the pathological and physiological functions of related signal pathways also should be understood sufficiently.
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AIM: To explore the role of basic-fibroblast growth factor (bFGF) in the development of pulmonary hypertension induced by hypoxia. METHODS: 1) The pulmonary arteries of SD rats with hypoxia for one and two weeks were isolated, from which the total RNA were extracted by acid guanidinium thiocyanate-phenol-chlorform .Then the levels of mRNA were measured by RT-PCR. 2) About 3mm-long arterial rings cut from SD rat pulmonary arterial stem were suspended between stainless steelhooks in chamber with warmed (37℃) Kreb's solution. Different concentrations of bFGF were added in a cumulative fashion into the chamber where the rings were suspended. The cumulative concentration response curve was obtained. RESULTS: 1)The levels of bFGF mRNA in pulmonary artery of rats with hypoxia were increased significantly compared with those that without hypoxia (2578?384 counts?min -1 (control) vs 5303?756 (hypoxia) for 1 week and 4054?547 (hypoxia) for 2 weeks, P all
Résumé
Transcription factor NF-?B has attracted attention due to its important role in the regulation of the expression of a number of cellular genes involved in host defense,inflammation/immune responses,cytokine and growth factor regulation,cell survival,proliferation,and also in embryonic development and programmed cell death. In this review,we provide an overview of established TNF-?,TLR/IL-1R,TCR and BCR signaling pathways to NF-?B,the alternative NF-?B pathway,and the regulation of NF-?B transcriptional activity. Furthermore,we discuss on emphasis the cross-talks between NF-?B and other signaling pathways (TGF-?,p53,nuclear receptor family,Ras/MEK/MAPK...),which are very complex and remain to be understood. The activation or inhibition of NF-?B has effect on other signaling pathways. They compose a complex signaling network,in which many regulatory signals integrate systematically and coordinate transcriptional responses to the stimulations. So when NF-?B is used as an important target of drugs in human diseases,the pathological and physiological functions of related signal pathways also should be understood sufficiently.