Expression of nucleotide-binding oligomerization domain 1 and 2 in oral lichen planus

A Decadal Bibliometric Analysis on the Therapeutic Strategies in Oral Lichen Planus

Background and Aims

Oral Lichen Planus (OLP) is a common chronic inflammatory autoimmune illness that mostly affects the oral mucosa but may also affect other mucous membrane. It has higher prevalence in female patients of fourth to sixth decade of life with reticular being the commonest clinical variant. Clinical assessment, patient history, biopsy findings, and immunofluorescence were used to diagnose OLP. This study aimed to assess research publication trends in therapeutic strategies in the treatment of OLP, examining publication growth, country and institution contributions, and collaborative networks.

Methods

Using the Dimensions and Lens.org databases with Boolean operators combined the keywords a total of 40,046 peer-reviewed international publications were initially assessed. The article was selected from 2014 to December 2023. Through rigorous application of inclusion and exclusion criteria using an advanced search, a subset of 134 papers emerged to meet the high relevance standards. This subset, constituting a representative sample, was selected for in-depth bibliometric analysis.

Results and Conclusion

The result shows a clear upward trend in the number of publications, with a notable increase in 2018. After 2018, there is decrease in the number of publications, but it has an upward trend, reaching a peak of 215 in 2022. Chaitanya Nallan CSK leads the list of authors with four publications and a respectable total citation count of 12. Cairo University is the leading institution in this data set, with the 8 number of publications and 11 citations. The analysis revealed that at the top of the list is the "Egyptian Dental Journal" from Egypt, with six publications, four citations, and a link strength of two. In the second position is "BMC Oral Health" from the United Kingdom, with five publications, one citation, and a link strength of three. This study offers valuable insights for future research, clinical practice, and policy decisions.

NOD2 is involved in regulating odontogenic differentiation of DPSCs suppressed by MDP through NF-κB/p65 signaling

Dental pulp stem cells (DPSCs) are well known for their capable of both self-renewal and multilineage differentiation. Dental tissue diseases, include caries, are often accompanied by inflammatory microenvironment, and muramyl dipeptide (MDP) is involved in the inflammatory stimuli to influence the differentiation of DPSCs. Nucleotide-binding oligomerization domain 2 (NOD2), a member of the cytosolic Nod-like receptor (NLR) family, plays a key role in inflammatory homeostasis regulation, but the role of NOD2 in DPSCs differentiation under inflammatory is still unclear. In this study, we identified that MDP suppressed odontogenic differentiation of DPSCs via NOD2/ NF-κB/p65 signaling pathway. Alizarin red staining and ALP activity showed the odontogenic differentiation was suppressed by MDP in a concentration-dependent manner, and the expression of dentin differentiation marker protein dentin matrix protein 1 (DMP-1) and dentin Sialophosphoprotein (DSPP) also indicated the same results. The expression of NOD2 increased gradually with the concentration of MDP as well as the phosphorylation and nuclear translocation of p65, which meant NF-κB signaling pathway was activated. Further, the interference of NOD2 inhibited the phosphorylation and nuclear translocation of p65 and reversed the MDP-mediated decrease of odontoblast differentiation of DPSCs. Our study showed that MDP can inhibit the odontoblast differentiation of DPSCs in a concentration-dependent manner. The NF-κB signaling pathway was activated by increasing expression of NOD2. Interference of NOD2 reversed the negative ability odontoblast differentiation of DPSCs in the inflammatory environment. Our study might provide a theoretical basis for the clinical treatment for dentinogenesis of DPSCs.

Prognostic impact of a lymphocyte activation-associated gene signature in GBM based on transcriptome analysis

Background

Glioblastoma multiforme (GBM) is a highly, malignant tumor of the primary central nervous system. Patients diagnosed with this type of tumor have a poor prognosis. Lymphocyte activation plays important roles in the development of cancers and its therapeutic treatments.

Objective

We sought to identify an efficient lymphocyte activation-associated gene signature that could predict the progression and prognosis of GBM.

Methods

We used univariate Cox proportional hazards regression and stepwise regression algorithm to develop a lymphocyte activation-associated gene signature in the training dataset (TCGA, n = 525). Then, the signature was validated in two datasets, including GSE16011 (n = 150) and GSE13041 (n = 191) using the Kaplan Meier method. Univariate and multivariate Cox proportional hazards regression models were used to adjust for clinicopathological factors.

Results

We identified a lymphocyte activation-associated gene signature (TCF3, IGFBP2, TYRO3 and NOD2) in the training dataset and classified the patients into high-risk and low-risk groups with significant differences in overall survival (median survival 15.33 months vs 12.57 months, HR = 1.55, 95% CI [1.28-1.87], log-rank test P < 0.001). This signature showed similar prognostic values in the other two datasets. Further, univariate and multivariate Cox proportional hazards regression models analysis indicated that the signature was an independent prognostic factor for GBM patients. Moreover, we determined that there were differences in lymphocyte activity between the high- and low-risk groups of GBM patients among all datasets. Furthermore, the lymphocyte activation-associated gene signature could significantly predict the survival of patients with certain features, including IDH-wildtype patients and patients undergoing radiotherapy. In addition, the signature may also improve the prognostic power of age.

Conclusions

In summary, our results suggested that the lymphocyte activation-associated gene signature is a promising factor for the survival of patients, which is helpful for the prognosis of GBM patients.