Background: The present study aimed to assess the perturbation in circular RNA (circRNA)/mRNA expression profiles and a circRNA-miRNA-mRNA coexpression network involved in the potential protective effect of diosgenin (DIO) on alveolar bone loss in rats subjected to ovariectomy (OVX).Methods: The Wistar rats (female) manipulated with sham operation were classified as the SHAM group and the grouping of OVX rats administered with DIO, estradiol valerate or vehicle for 12 weeks was DIO group, EV group and OVX group respectively. Following treatments, the plasmatic levels of osteocalcin and tumor necrosis factor-alpha and the microstructure of alveolar bone were assayed. Based on microarray analyses, we identified differentially expressed (DE) circRNAs and mRNAs in alveolar bone of rats in both OVX and DIO group. The DE circRNAs and DE mRNAs involved in the bone metabolism pathway validated by RT-qPCR were considered key circRNAs/mRNAs. On the basis of these key circRNAs/mRNAs, we predicted the overlapping relative miRNAs of key circRNAs/mRNAs, and a circRNA-miRNA-mRNA network was built.Results: DIO showed an anti-osteopenic effect on the rat alveolar bone loss induced by OVX. In total, we found 10 DE circRNAs (6 downregulated and 4 upregulated) and 614 DE mRNAs (314 downregulated and 300 upregulated) in samples of the DIO group compared with those of the OVX group. However, only one circRNA (rno_circRNA_016717) and seven mRNAs (Sfrp1,Csf1,Il1rl1,Nfatc4,Tnfrsf1a,Pik3c2g, andWnt9b) were validated by qRT-PCR and therefore considered key circRNA/mRNAs. According to these key circRNA/mRNAs and overlapping predicted miRNAs, a coexpression network was constructed. After network analysis, one circRNA-miRNA-mRNA axis (circRNA_016717/miR-501-5p/Sfrp1) was identified.Conclusion: The mechanism of DIO inhibiting alveolar bone loss after OVX is possibly relevant to the simultaneous inhibition of osteogenesis and osteoclastogenesis by mediating the expression of important molecules in the Wnt, PI3K, RANK/RANKL or osteoclastogenic cytokine pathways. The circRNA_016717/miR-501-5p/Sfrp1axis may play important roles in these processes.

COVID‐19 (coronavirus) has spread all over the world with a high infection rate. Currently, there are no targeted therapeutic drugs for COVID‐19 as well as for stress induced by COVID‐19. The unpredictable events of COVID‐19 can trigger feelings of fear, worry, or unease in people, leading to stress‐related disorders such as depression and anxiety. It has been reported that individuals, including COVID‐19 patients, medical staff, and ordinary people, are under both physical and psychological pressure, and many of them have developed depression or anxiety during this pandemic. Traditional Chinese medicine (TCM) has been widely used in treating depression with relatively better safety and efficacy and may have an important role in treating stress‐related disorders induced by COVID‐19. In this review, we collected the common TCM treatment methods including Qigong, Acupuncture, Five Elements Musical Therapy, Five Elements Emotional Therapy, and Chinese herbal medicine from the databases of PubMed and the China National Knowledge Internet to illustrate the effect of TCM on depression. The better knowledge of TCM and implementation of TCM in COVID‐19 clinics may help to effectively improve depression induced by COVID‐19, may assist people to maintain a healthy physical and mental quality, and may alleviate the current shortage of medical resources.

Background: This work aims to systematically investigate the formulation rules and potential mechanisms of Salviae Miltiorrhizae Radix et Rhizoma (SM)-containing health products to support healthy blood lipid levels.Materials and methods: Data on SM-containing health products were retrieved from official databases. Formulation patterns were analyzed using frequency statistics and association rule mining. An integrated network pharmacology strategy was then used to explore potential regulatory mechanisms, including active compound screening, target prediction, protein–protein interaction (PPI) network construction, and functional enrichment analysis. Results were further validated using molecular docking.Results: A total of 477 approved products were analyzed, with “helping maintain blood lipid levels” as the primary health function claim. These products contained 160 compatible medicinal herbs, which are mainly mild-cold in nature and sweet in flavor. They are commonly used for “deficiency tonification” and “blood-activating and stasis-resolving” in traditional Chinese medicine (TCM). A total of 267 compounds and 181 key targets were identified for the lipid-regulating function of SM. These targets were enriched in peroxisome proliferator-activated receptor (PPAR) signaling, Lipid and Atherosclerosis, and the Regulation of Lipolysis in adipocytes. Eight targets, including AKT1 and peroxisome proliferator-activated receptor gamma (PPARG), were identified as core targets. Finally, molecular docking results suggested potential binding affinities between primary active components and core targets.Conclusion: This study demonstrated that SM exerts its lipid-regulating effects via multi-component, multi-target, and multi-pathway mechanisms. These findings provided a theoretical basis for the rational development and application of relevant health products.