1.Mechanism of Yiqi Huoxue Therapy Regulating IL-33/ST2/IL-1RAP to Improve Nasal Mucosal Tissue Remodeling and Intervene in Allergic Rhinitis
Huan WANG ; Hongping LUO ; Meiya WANG ; Yuyin LIU ; Chenlin WANG ; Chao LIAO ; Fangqi LIANG ; Peizheng XIONG ; Li TIAN
Chinese Journal of Experimental Traditional Medical Formulae 2026;32(14):298-307
ObjectiveTo explore the mechanism by which Qidan Yifei Tongqiao granules (QDYF) alleviate nasal mucosal remodeling in allergic rhinitis (AR) via the interleukin-33 (IL-33)/growth stimulation expressed gene 2 (ST2)/interleukin-1 receptor accessory protein (IL-1RAP) signaling pathway from the perspective of Qi-replenishing and blood-activating therapy. MethodsFirst, according to the previous network pharmacology results, this study predicted the potential mechanisms of QDYF in treating AR by screening key pathways, components, and targets. Molecular docking was performed via AutoDock and PyMOL 2.5.5. Subsequently, a rat model of ovalbumin (OVA)-induced AR was used for validation through in vivo experiments. Forty-eight rats were assigned into 6 groups: Control, model, low-dose QDYF (QDYF-L, 4.04 g·kg-1), medium-dose QDYF (QDYF-M, 8.08 g·kg-1), high-dose QDYF (QDYF-H, 16.16 g·kg-1), and loratadine (0.9 mg·kg-1). After 14 days of intervention, behavioral scores of the rats were observed. The morphological changes of nasal mucosa tissue were observed by hematoxylin-eosin (HE) staining. Masson staining was used to observe collagen fiber deposition in the nasal mucosal tissue and to calculate the collagen volume fraction (CVF). The expression of E-cadherin (E-cad) in the nasal mucosa tissue was detected by immunofluorescence. The serum levels of helper T cell 2 (Th2) cytokines interleukin-4 (IL-4), interleukin-5 (IL-5), and interleukin-13 (IL-13) as well as helper T cell 1 (Th1) cytokines interleukin-2 (IL-2) and interferon-γ (INF-γ) were quantified by enzyme-linked immunosorbent assay (ELISA). The protein levels of transforming growth factor-beta 1 (TGF-β1), IL-33, ST2, and IL-1RAP in the nasal mucosa tissue were determined by Western blot. ResultsIL-33, ST2, and IL-1RAP had strong binding ability with the main active ingredients—wogonin, 7-methoxy-2-methylisoflavone, formononetin, naringenin, stigmasterol, and beta-sitosterol of QDYF, with the binding energy < -4.25 kcal⋅mol-1(1 cal≈4.184 J). The results of in vivo experiments showed that compared with the control group, the model group exhibited increased behavioral scores (P<0.05), aggravated pathological damage of nasal mucosa, increased collagen fiber deposition and CVF (P<0.05), elevated serum levels of IL-4, IL-5, and IL-13, up-regulated protein levels of TGF-β1, IL-33, ST2, and IL-1RAP in the nasal mucosa (P<0.05), down-regulated expression of E-cad, and declined serum levels of IL-2, IFN-γ, and IFN-γ/IL-4 ratio (P<0.05). Compared with the model group, the QDYF groups and loratadine group showed reduced behavioral scores (P<0.05), alleviated pathological damage of nasal mucosa, reduced collagen fiber deposition and CVF (P<0.05), and up-regulated E-cad expression (P<0.05). Compared with the model group, the QDYF-H group and the loratadine group showed raised levels of INF-γ and IFN-γ/IL-4 ratio (P<0.05), declined serum levels of IL-4, IL-5, and IL-13, and down-regulated protein levels of TGF-β1, IL-33, ST2, and IL-1RAP in the nasal mucosa (P<0.05). In addition, the QDYF-H group exhibited an elevated serum IL-2 level (P<0.05). The QDYF-M group showed down-regulated protein levels of TGF-β1, IL-33 and IL-1RAP in the nasal mucosa (P<0.05). The QDYF-L group demonstrated a down-regulated protein level of ST2 in the nasal mucosa (P<0.05). ConclusionQDYF may regulate the Th1/Th2 balance through the IL-33/ST2/IL-1RAP signaling pathway, thereby ameliorating nasal mucosal tissue remodeling and alleviating AR.
2.Construction and practice of perioperative oral nursing program for patients with laparoscopic thyroidectomy via oral vestibule approach
Fengjie XUE ; Yan SI ; Yunting WANG ; Ming LIU ; Meiping SHEN ; Pingping WANG
Chinese Journal of Practical Nursing 2025;41(29):2241-2248
Objective:To develop and validate a perioperative oral care protocol for patients undergoing oral vestibular approach endoscopic thyroid cancer radical surgery, providing practical guidance for clinical nursing.Methods:The protocol was constructed through literature analysis and Delphi expert consultation. A prospective non-randomized controlled study was conducted using convenience sampling, enrolling 60 patients who underwent oral vestibular approach endoscopic thyroid cancer radical surgery at the First Affiliated Hospital with Nanjing Medical University Thyroid Center between August 2023 and May 2024. Participants were divided into control group (from August to December, 2023) and experimental group (from January to May, 2024) based on admission dates with 30 cases in each group. The control group received routine care, while the experimental group received the developed oral care protocolin on the basis of the control group. Postoperative pain scores, mouth-opening difficulties, and oral cleanliness were compared on days 1, 3, and 7 after surgery.Results:The final protocol comprised 7 first-level indicators (team collaboration, health education, preoperative oral assessment, preoperative management, intraoperative management, postoperative management, and discharge follow-up), 17 second-level indicators, and 49 third-level indicators. The control group had 4 males and 26 females, with an age of (29.57 ± 5.34) years; the experimental group had 6 males and 24 females, with an age of (29.87 ± 6.25) years. On postoperative days 1, 3, and 7, the pain scores were 3.87 ± 1.01, 3.30 ± 0.92, and 2.53 ± 0.68 in the control group and 3.20 ± 0.87, 2.10 ± 0.76, and 1.50 ± 0.51 in the experimental group, respectively. The differences between the two groups were statistically significant ( t = 2.89, 5.12, 6.34, all P<0.05). For mouth-opening difficulties, the control group had 6, 13, and 15 patients with grade I on postoperativedays 1, 3, and 7, respectively, while the experimental group had 10, 20, and 25 patients with gradeⅠ. The control group had 20, 14, and 14 patients with gradeⅡonpostoperative days 1, 3, and 7, respectively, while the experimental group had 17, 10, and 5 patients with gradeⅡ. The control group had 4, 3, and 1 patients with grade Ⅲ on postoperative days 1, 3, and 7, respectively, while the experimental group had 3, 0, and 0 patients with grade Ⅲ. There were 0 cases in both groups with grade Ⅳ. The differences between the two groups on postoperative days 3, and 7 were statistically significant ( χ2 = 10.45, 18.67, both P<0.05). For oral cleanliness, the control group had 3, 4, and 5 patients with excellent cleanliness on postoperative days 1, 3, and 7, respectively, while the experimental group had 11, 16, and 19 patients with excellent cleanliness. The control group had 20, 22, and 23 patients with good cleanliness on postoperative days 1, 3, and 7, respectively, while the experimental group had 18, 13, and 10 patients with good cleanliness. The control group had 7 (23.33%), 4 (13.33%), and 2 (6.67%) patients with poor cleanliness on postoperative days 1, 3, and 7, respectively, while the experimental group had 1 (3.33%), 1 (3.33%), and 1 (3.33%) patients with poor cleanliness. The differences between the two groups were statistically significant ( χ2 = 9.19, 11.32, 16.68, all P<0.05). Conclusions:The developed perioperative oral care protocol is scientifically sound, feasible, and practical. Following the intervention, significant decreases in pain scores, alleviation of trismus symptoms, and marked improvements in oral cleanliness were observed in patients compared to pre-intervention assessments, and worth further clinical application.
3.A randomized controlled study of deproteinized calf blood extract in the treatment of diabetic cataract with dry eye after phacoemulsification
Fengjie LI ; Can ZHAO ; Li PEI ; Jijun SUN ; Xiaofeng LI ; Mengdi NIU ; Yabin TIAN ; Xiaozhen HE ; Jincong WANG ; Ting WANG
Chinese Journal of Experimental Ophthalmology 2025;43(4):343-349
Objective:To compare the clinical effect of deproteinized calf blood extract (DCBE) eye drops and 0.3% sodium hyaluronate eye drops in the treatment of diabetic cataract patients with dry eye after phacoemulsification.Methods:A randomized controlled study was performed.A total of 112 patients (116 eyes) with type Ⅱ diabetes combined with cataract and dry eye who underwent phacoemulsification in the Eye Hospital of Shandong First Medical University from January 2022 to September 2022 were selected.Patients were divided into DCBE group (49 cases, 51 eyes) and sodium hyaluronate group (63 cases, 65 eyes) by the random number table method.Patients received DCBE eye drops and 0.3% sodium hyaluronate eye drops after surgery according to grouping.Preoperative and postoperative 1 week, 1 month subjective symptoms of dry eye, corneal edema grade, tear film breakup time (TBUT), corneal fluorescein staining (CFS) and Schirmer Ⅰ test (SⅠt) results were recorded and compared.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Eye Hospital of Shandong First Medical University (No.SDSYKYY202112-1).Written informed consent was obtained from each subject.Results:There were significant differences in dry eye symptom score, TBUT and SⅠt at different time points between before and after surgery ( Ftime=323.202, 102.771, 151.876; all P<0.001).Dry eye symptom score decreased and SⅠt increased in the two groups at 1 week and 1 month after surgery compared with before surgery, and the differences were statistically significant (all P<0.017).TBUT was longer at 1 week and 1 month after surgery compared with before surgery in the DCBE group, and TBUT at 1 month after surgery was longer than that before surgery in the sodium hyaluronate group, and the differences were statistically significant (all P<0.017).There were statistically significant differences in CFS scores between the two groups at different time points before and after surgery ( Fgroup=5.391, P=0.022; Ftime=142.402, P<0.001).The CFS scores of both groups at 1 week and 1 month after surgery were lower than those before surgery, and CFS scores in the DCBE group were lower than those in the sodium hyaluronate group, with statistically significant differences (all P<0.017).One week after surgery, the proportion of patients with corneal edema in the DCBE group was 5.9%(3/51), which was significantly lower than 20.0%(13/65) in the sodium hyaluronate group ( χ2=4.790, P=0.029). Conclusions:DCBE eye drops can promote corneal repair, stabilize tear film and improve dry eye discomfort in early postoperative period in diabetic cataract, and its overall effect is better than 0.3% sodium hyaluronate eye drops.
4.Application progress of machine learning in study on cold and hot properties of Chinese materia medica
Jiarou WANG ; Lu ZHOU ; Huimin YUAN ; Yuhan SHENG ; Yaqi ZHANG ; Yang TANG ; Yan SUN ; Fengjie ZHENG ; Yuhang LI
International Journal of Traditional Chinese Medicine 2025;47(3):423-428
The scientific interpretation of the theory of medicinal properties of TCM is a research hotspot in the modernization of TCM. It is of great value to clarify the property and degree of cold and heat in Chinese materia medica for guiding clinical precise medication. In recent years, the research on the cold and heat properties of Chinese materia medica has been carried out at the animal, cell and molecular levels. Based on the objective material basis of medicinal properties, from the perspective of biological effects such as thermodynamics and multiomics; with the help of infrared thermal imaging and other technologies for analysis; forming a variety of research models such as "property-structure relationship". Related research has developed from a single material component or index to a new model that tends to integrate multi-source information and multi-dimensional data. However, how to deal with the problems of large sample size, strong redundancy, high heterogeneity, and how to integrate multi-dimensional information are still research difficulties. With its powerful computing and learning ability, machine learning can show good discrimination and prediction ability in the study of cold and hot properties of Chinese materia medica, and play an important role in the study of cold and hot properties of Chinese materia medica. At present, the most widely used algorithms are linear discriminant analysis, Logistic discriminant analysis, support vector machine, decision tree, random forest and so on. The data dimension of the existing research needs to be enriched, the algorithm has room for further optimization, and a more detailed discriminant model of cold and hot properties of Chinese materia medica needs to be established.
5.A randomized controlled study of deproteinized calf blood extract in the treatment of diabetic cataract with dry eye after phacoemulsification
Fengjie LI ; Can ZHAO ; Li PEI ; Jijun SUN ; Xiaofeng LI ; Mengdi NIU ; Yabin TIAN ; Xiaozhen HE ; Jincong WANG ; Ting WANG
Chinese Journal of Experimental Ophthalmology 2025;43(4):343-349
Objective:To compare the clinical effect of deproteinized calf blood extract (DCBE) eye drops and 0.3% sodium hyaluronate eye drops in the treatment of diabetic cataract patients with dry eye after phacoemulsification.Methods:A randomized controlled study was performed.A total of 112 patients (116 eyes) with type Ⅱ diabetes combined with cataract and dry eye who underwent phacoemulsification in the Eye Hospital of Shandong First Medical University from January 2022 to September 2022 were selected.Patients were divided into DCBE group (49 cases, 51 eyes) and sodium hyaluronate group (63 cases, 65 eyes) by the random number table method.Patients received DCBE eye drops and 0.3% sodium hyaluronate eye drops after surgery according to grouping.Preoperative and postoperative 1 week, 1 month subjective symptoms of dry eye, corneal edema grade, tear film breakup time (TBUT), corneal fluorescein staining (CFS) and Schirmer Ⅰ test (SⅠt) results were recorded and compared.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Eye Hospital of Shandong First Medical University (No.SDSYKYY202112-1).Written informed consent was obtained from each subject.Results:There were significant differences in dry eye symptom score, TBUT and SⅠt at different time points between before and after surgery ( Ftime=323.202, 102.771, 151.876; all P<0.001).Dry eye symptom score decreased and SⅠt increased in the two groups at 1 week and 1 month after surgery compared with before surgery, and the differences were statistically significant (all P<0.017).TBUT was longer at 1 week and 1 month after surgery compared with before surgery in the DCBE group, and TBUT at 1 month after surgery was longer than that before surgery in the sodium hyaluronate group, and the differences were statistically significant (all P<0.017).There were statistically significant differences in CFS scores between the two groups at different time points before and after surgery ( Fgroup=5.391, P=0.022; Ftime=142.402, P<0.001).The CFS scores of both groups at 1 week and 1 month after surgery were lower than those before surgery, and CFS scores in the DCBE group were lower than those in the sodium hyaluronate group, with statistically significant differences (all P<0.017).One week after surgery, the proportion of patients with corneal edema in the DCBE group was 5.9%(3/51), which was significantly lower than 20.0%(13/65) in the sodium hyaluronate group ( χ2=4.790, P=0.029). Conclusions:DCBE eye drops can promote corneal repair, stabilize tear film and improve dry eye discomfort in early postoperative period in diabetic cataract, and its overall effect is better than 0.3% sodium hyaluronate eye drops.
6.Construction and practice of perioperative oral nursing program for patients with laparoscopic thyroidectomy via oral vestibule approach
Fengjie XUE ; Yan SI ; Yunting WANG ; Ming LIU ; Meiping SHEN ; Pingping WANG
Chinese Journal of Practical Nursing 2025;41(29):2241-2248
Objective:To develop and validate a perioperative oral care protocol for patients undergoing oral vestibular approach endoscopic thyroid cancer radical surgery, providing practical guidance for clinical nursing.Methods:The protocol was constructed through literature analysis and Delphi expert consultation. A prospective non-randomized controlled study was conducted using convenience sampling, enrolling 60 patients who underwent oral vestibular approach endoscopic thyroid cancer radical surgery at the First Affiliated Hospital with Nanjing Medical University Thyroid Center between August 2023 and May 2024. Participants were divided into control group (from August to December, 2023) and experimental group (from January to May, 2024) based on admission dates with 30 cases in each group. The control group received routine care, while the experimental group received the developed oral care protocolin on the basis of the control group. Postoperative pain scores, mouth-opening difficulties, and oral cleanliness were compared on days 1, 3, and 7 after surgery.Results:The final protocol comprised 7 first-level indicators (team collaboration, health education, preoperative oral assessment, preoperative management, intraoperative management, postoperative management, and discharge follow-up), 17 second-level indicators, and 49 third-level indicators. The control group had 4 males and 26 females, with an age of (29.57 ± 5.34) years; the experimental group had 6 males and 24 females, with an age of (29.87 ± 6.25) years. On postoperative days 1, 3, and 7, the pain scores were 3.87 ± 1.01, 3.30 ± 0.92, and 2.53 ± 0.68 in the control group and 3.20 ± 0.87, 2.10 ± 0.76, and 1.50 ± 0.51 in the experimental group, respectively. The differences between the two groups were statistically significant ( t = 2.89, 5.12, 6.34, all P<0.05). For mouth-opening difficulties, the control group had 6, 13, and 15 patients with grade I on postoperativedays 1, 3, and 7, respectively, while the experimental group had 10, 20, and 25 patients with gradeⅠ. The control group had 20, 14, and 14 patients with gradeⅡonpostoperative days 1, 3, and 7, respectively, while the experimental group had 17, 10, and 5 patients with gradeⅡ. The control group had 4, 3, and 1 patients with grade Ⅲ on postoperative days 1, 3, and 7, respectively, while the experimental group had 3, 0, and 0 patients with grade Ⅲ. There were 0 cases in both groups with grade Ⅳ. The differences between the two groups on postoperative days 3, and 7 were statistically significant ( χ2 = 10.45, 18.67, both P<0.05). For oral cleanliness, the control group had 3, 4, and 5 patients with excellent cleanliness on postoperative days 1, 3, and 7, respectively, while the experimental group had 11, 16, and 19 patients with excellent cleanliness. The control group had 20, 22, and 23 patients with good cleanliness on postoperative days 1, 3, and 7, respectively, while the experimental group had 18, 13, and 10 patients with good cleanliness. The control group had 7 (23.33%), 4 (13.33%), and 2 (6.67%) patients with poor cleanliness on postoperative days 1, 3, and 7, respectively, while the experimental group had 1 (3.33%), 1 (3.33%), and 1 (3.33%) patients with poor cleanliness. The differences between the two groups were statistically significant ( χ2 = 9.19, 11.32, 16.68, all P<0.05). Conclusions:The developed perioperative oral care protocol is scientifically sound, feasible, and practical. Following the intervention, significant decreases in pain scores, alleviation of trismus symptoms, and marked improvements in oral cleanliness were observed in patients compared to pre-intervention assessments, and worth further clinical application.
7.Correlation of interferon-induced gene IFIT1 with immune infiltration and prognosis in ovarian cancer
Ruiwei WANG ; Fengjie LI ; Xiaolong LIANG ; Xin ZHOU ; Liping LIU ; Qiurong LI ; Mingmin HE ; Yudi LI
Journal of Army Medical University 2024;46(10):1132-1141
Objective To analyze the correlation of interferon-induced protein with tetratricopeptide repeats 1(IFIT1)with immune infiltration and prognosis of ovarian cancer(OC).Methods GEO database was employed to select the tumor immune related genes,and Kaplan-Meier and Prognoscan databases were used to identify the genes significantly associated with OC prognosis.The differential expression of IFIT1 between OC tissue and normal tissue were confirmed with GEPIA,Human Protein Atlas,and Timer databases.The expression level of IFIT1 in OC tissues with different grades and stages were analyzed in the UALCAN database.In addition,based on David database,GO enrichment analysis was used to analyze the interacting genes and proteins of IFIT1 in the String and Genemania databases.Timer and Tisidb databases verified the correlation between IFIT1 and immune cells mutually.Finally,after IFIT1 knockdown xenograft model was constructed based on lentiviral vector of IFIT1 shRNA,the tumor growth was observed in the transplanted nude mice,and infiltration of neutrophils was observed with immunohistochemical assay.Results FIT1,a tumor immune gene,selected from the GEO database,Kaplan-Meier and Prognoscan databases,was negatively correlated with the OC prognosis.GEPIA,Human Protein Atlas,Timer database,and UALCAN database indicated that the expression level of IFIT1 was significantly higher in the OC tissues than the normal ovarian tissues,and had no obvious correlation with tumor stage and grade.Analysis in String,Genemania,and David database found the interaction genes and proteins of IFIT1 were enriched in activation of 2'-5'oligonucleotide synthase,virus defense,and innate immunity,and other processes.The Timer database presented that IFIT1 was positively correlated with the infiltration of CD8+T cells,B cells,dendritic cells,neutrophils,and macrophage in OC,with neutrophils having the most significant correlation.Tisidb and GSCA also confirmed the positive correlation between IFIT1 and neutrophil infiltration in OC(P<0.05).RT-qPCR and Western blotting confirmed that IFIT1 knockdown resulted in suppressed tumor growth in OC cells xenograft nude mice(P<0.05)and reduced neutrophil infiltration in the xenograft tissues.Conclusion IFIT1 may influence the malignant progression of OC by promoting neutrophil infiltration.
8.Expression and clinical significance of serum miR-124-3p and miR-202-5p in patients with allergic rhinitis
Fengjie LIU ; Buquan WANG ; Chenggang MAO
Chinese Archives of Otolaryngology-Head and Neck Surgery 2024;31(8):515-518
OBJECTIVE Exploring the expression levels of serum miR-124-3p and miR-202-5p levels in patients with allergic rhinitis(AR) and their clinical significance. METHODS One hundred and seventy-three patients with AR admitted to our hospital during the period from January 2022 to December 2022 were selected as the observation group,and another 63 healthy people who underwent physical examination in our hospital during the same period were selected as the control group. RESULTS In the control,mild,and severe groups,serum miR-124-3p(1.02±0.29 vs. 0.79±0.21 vs. 0.63±0.18) levels gradually decreased and miR-202-5p(1.01±0.25 vs. 1.39±0.29 vs. 1.62±0.33) levels gradually increased,with statistically significant differences between the two comparisons(P<0.05);Pearson correlation analysis showed a significant negative correlation between serum miR-124-3p levels and miR-202-5p levels in AR patients(r=-0.437,P<0.001);Serum miR-124-3p level[OR(95%CI)=0.651(0.508-0.835)],duration of symptom onset[OR(95%CI)=1.671(1.088-2.567)],asthma[OR(95%CI)=1.571(1.029-2.399)],and serum miR-202-5p level[OR(95%CI)=2.053(1.020-4.133)]were influential factors in patients with severe AR(P<0.05);the combined prediction of serum miR-124-3p and miR-202-5p was superior to the prediction of serum miR-124-3p(Z=2.385,P=0.017) and miR-202-5p(Z=2.466,P=0.014) alone. CONCLUSION Serum miR-124-3p is lowly expressed and miR-202-5p is highly expressed in AR patients,which is closely correlated with the severity of the patient's disease and is expected to be a potential biomarker.
9.A new variant of respiratory syncytial virus glycoprotein gene and clinical features of infected children
Mingli JIANG ; Fengjie WANG ; Zhenzhi HAN ; Yanpeng XU ; Yu SUN ; Runan ZHU ; Dongmei CHEN ; Qi GUO ; Yutong ZHOU ; Linqing ZHAO
Chinese Journal of Microbiology and Immunology 2024;44(2):120-127
Objective:To analyze the epidemiological features of respiratory syncytial virus (RSV) infection in Beijing, and monitor the sequence variations in RSV glycoprotein (G) gene and clinical features of infected children.Methods:Respiratory tract specimens were collected from children with acute respiratory infection in the Children′s Hospital Affiliated to Capital Institute of Pediatrics from January 1, 2023 to December 31, 2023. RSV-positive specimens screened by multiple nucleic acid testing were subjected to PCR to amplify the full-length RSV G gene. A phylogenetic tree was constructed after gene sequencing to analyze RSV subtypes and trace G gene variants. Clinical data were retrieved from the medical record system to analyze the clinical features of children with RSV infection in Beijing.Results:A total of 5 489 respiratory specimens were collected from 3 046 male patients and 2 443 female patients. The average age of the patients was 4.36 years. A total of 589 RSV-positive specimens (10.7%, 589/5 489) were detected with 349 from male patients and 240 from female patients. The average age of children with RSV infection was (2.51±2.78) years and the median age was 0.48 years. RSV had been circulating among children in Beijing since March 2023 with two epidemic peaks in May (24.6%, 122/496) and December (18.2%, 126/693). The predominant subtype of RSV in the first half of 2023 was subtype A, but it was replaced by subtype B from November 2023. Phylogenetic analysis revealed a novel G gene of RSV subtype B (RSV-B-BA9-954bp) with a length of 954 bp, which belonged to a new cluster in the phylogenetic tree. The percentage of patients admitted to the Intensive Care Unit (ICU) was higher in children with new variant of RSV subtype B infection than in those with common RSV subtype B infection [44.1% (15/34) vs 25.2% (31/123), χ 2=4.600, P=0.032], while the counts of white blood cells and the levels of C-reactive protein were lower in the children with new variant infection ( P<0.05). Conclusions:RSV has been prevalent among children in Beijing since March 2023 with two epidemic peaks. The predominant A subtype is gradually replaced by to B subtype. A new variant of RSV B G gene (RSV-B-BA9-954bp) is detected among the children.
10.Transcriptomic analysis of A549 cells infected with ON1 genotype of human respiratory syncytial virus subtype A isolated in Beijing
Fengjie WANG ; Mingli JIANG ; Qi GUO ; Xiaoyun LI ; Yu SUN ; Runan ZHU ; Linqing ZHAO
Chinese Journal of Microbiology and Immunology 2024;44(2):128-133
Objective:To analyze the differentially expressed genes of human respiratory syncytial virus (RSV) subtype A genotype ON1, a predominant genotype in Beijing, after infecting A549 cells using transcriptomic sequencing, and provide potential targets for RSV prevention and treatment.Methods:A local strain (61397-ON1) identified by whole-genome sequencing as ON1 genotype of RSV subtype A was selected to infect A549 cells. Total mRNA was extracted, and the differentially expressed genes in infected and uninfected A549 cells were screened by transcriptomic sequencing. GO analysis and KEGG pathway analysis were performed. Besides, six genes with differential expression ratio greater than two times were randomly selected for qRT-PCR verification.Results:There were 1 632 differentially expressed genes between infected and uninfected A549 cells, of which 807 genes were up-regulated and 825 genes were down-regulated. The differentially expressed genes were mainly involved in immune response-related biological processes such as cytokine response and positive regulation of MAPK cascades, and were enriched in MAPK signaling pathway, NOD-like receptor signaling pathway, p53 signaling pathway, TNF signaling pathway, IL-17 signaling pathway and NF-κB signaling pathway. The results of qRT-PCR for six differentially expressed genes were consistent with the trend of transcriptome data.Conclusions:The differentially expressed genes of RSV A subtype ON1 genotype after infecting A549 cells are mainly involved in cytokine response and immune-related signaling pathways. This study provides basic data for further study of the molecular mechanism of RSV infection and the development of prevention and treatment strategies.

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