1.Quality evaluation of Sanzi powder based on quantitative analysis of multi-component combined with chemical pattern recognition and entropy weight-TOPSIS method
Rongjie LI ; Qian ZHANG ; Wei ZHANG ; Xinkui LI ; Yuxia HU ; Mengdi ZHANG ; Jing LIU ; Fang WANG ; Fengye ZHOU ; Jun LI
China Pharmacy 2025;36(15):1846-1851
		                        		
		                        			
		                        			OBJECTIVE To comprehensively evaluate the quality of Sanzi powder from different batches based on 12 components quantitative analysis combined with chemical pattern recognition and entropy weight-TOPSIS method. METHODS The contents of 12 components in 15 batches of Sanzi powder (No. S1-S15) were determined by HPLC-MS/MS, such as ethyl gallate, gallic acid, ferulic acid, corilagin, genipin-1-O-β-D-gentiobioside, toosendanin, geniposide, caffeic acid, methyl deacetylated coumarinate, tannic acid, rutin, quercetin. Cluster analysis (CA), principal component analysis (PCA), and orthogonal partial least squares-discriminant analysis (OPLS-DA) were conducted on the assay results. Using variable importance projection (VIP) value>1 and P<0.05 as the evaluation criteria, the quality differential markers in Sanzi powder were screened. The entropy weight method was used to calculate the weight value, and TOPSIS method was used to rank the quality of 15 batches of Sanzi powder from superior to inferior. RESULTS The contents of the 12 components were 13.494-24.292, 2 069.608-3 188.100, 1.410-3.616, 1 065.030-2 630.584, 1 404.704-1 838.078, 101.640-354.268, 9 193.720-14 777.854, 1.240-5.060, 148.028-5 541.990, 4 261.422-5 607.438, 107.560- 195.512, 2.226-4.192 μg/g, respectively. The results of CA, PCA and OPLS-DA indicated that 15 batches of Sanzi powder could be clustered into two groups. Specifically, batches S3, S7, S10 and S15 were grouped into one category, and remaining batches were grouped into one category. VIP values of geniposide, quercetin, caffeic acid, and methyl deacetylated coumarinate were all greater than 1, with corresponding P-values less than 0.05. The results of the entropy weight-TOPSIS analysis revealed that methyl deacetylate exhibited the smallest information entropy and the highest weight. The relative closeness degrees of samples S3, S7, S10 and S15 ranged from 0.789 to 0.973, while the remaining samples ranged from 0.054 to 0.172. CONCLUSIONS The contents of 12 components in Sanzi powder could be determined accurately by using HPLC-MS/MS technology. Methyl deacetylated coumarinate, geniposide, quercetin and caffeic acid were identified as the quality differential markers. It was found that the overall quality of samples S3, S7, S10 and S15 were superior to that of other batches. Notably, the quality of Gardeniae Fructus decoction pieces emerges as a critical factor in ensuring the consistency of the preparation’s quality.
		                        		
		                        		
		                        		
		                        	
2.Underlying Mechanism of Wuwei Shenqintang in Amelioration of Pulmonary Fibrosis by Regulating "Lung-intestine Axis" Based on UPLC-Q-TOF-MS Metabolomics Technology
Mengdi SUN ; Fang LU ; Donghua YU ; Yu WANG ; Pingping CHEN ; Shumin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):11-20
		                        		
		                        			
		                        			ObjectiveTo explore the mechanism of action of Wuwei Shenqintang in improving pulmonary fibrosis by using ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF-MS) for metabolomic analysis of lung tissue and feces. MethodsA rat model with pulmonary fibrosis was established by intratracheal injection of 5 mg·kg-1 bleomycin. The successfully modeled rats were randomly divided into a blank group, a model group, a prednisone (3.15 mg·kg-1) group, and low-dose, medium-dose, and high-dose groups of Wuwei Shenqintang (4.586, 9.172, 18.344 g·kg-1). The rats were given intragastric administration once a day for 28 consecutive days. Hematoxylin-eosin (HE) staining was used to measure the pathological changes in lung and colon tissue, and Masson staining was used to detect the degree of pulmonary fibrosis. Enzyme-linked immunosorbent assay (ELISA) was used to detect the expression of interleukin-1β (IL-1β), IL-6, IL-8, tumor necrosis factor-α (TNF-α), and secretory immunoglobulin A (SIgA) in bronchoalveolar lavage fluid and intestinal mucus. Immunohistochemistry and reverse transcription quantitative polymerase chain reaction (Real-time PCR) were used to detect the expression of type Ⅰ collagen (Col-Ⅰ), fibronectin (FN), and alpha smooth muscle actin (α-SMA) in lung tissue. UPLC-Q-TOF-MS was used to study the changes in the metabolic network of lung tissue and feces in rats with pulmonary fibrosis treated with Wuwei Shenqintang, screen potential biomarkers for the treatment of pulmonary fibrosis by Wuwei Shenqintang, and perform pathway enrichment analysis. ResultsCompared with the blank group, the model group showed extensive inflammatory cell infiltration and continuous fibrotic lesions in lung tissue, colonic mucosal damage, and connective tissue hyperplasia. The expression of IL-6, IL-8, IL-1β, TNF-α, and SIgA in bronchoalveolar lavage fluid and intestinal mucus was significantly increased (P<0.01). The expression of Col-Ⅰ, FN, and α-SMA proteins and mRNAs in lung tissue was significantly upregulated (P<0.01). Compared with the model group, the groups of Wuwei Shenqintang exhibited significantly reduced inflammatory infiltration and blue collagen deposition in lung tissue, alleviated colonic damage, decreased expression of IL-6, IL-8, IL-1β, TNF-α, and SIgA in bronchoalveolar lavage fluid and intestinal mucus (P<0.01), and reduced average absorbance values and mRNA expression of Col-Ⅰ, FN, and α-SMA in lung tissue (P<0.05, P<0.01), with the prednisone group and the medium-dose and high-dose groups of Wuwei Shenqintang showing the most significant effects. The metabolomics results for lung tissue showed that compared with the blank group, the model group had 19 significantly different compounds (P<0.05, P<0.01). Wuwei Shenqintang could normalize 17 of these compounds compared with the model group (P<0.05, P<0.01). Fecal metabolomics results showed that compared with those in the blank group, there were 42 compounds with significant differences in the model group (P<0.05, P<0.01). Compared with the model control group, Wuwei Shenqintang could normalize 41 of these compounds (P<0.05, P<0.01). The combined analysis results indicated that Wuwei Shenqintang might inhibit pulmonary fibrosis by regulating the biosynthesis of phenylalanine, tyrosine, and tryptophan as well as the retinol metabolism pathway. ConclusionWuwei Shenqintang can ameliorate pulmonary fibrosis, which may be related to the regulation of the "lung-intestine axis". 
		                        		
		                        		
		                        		
		                        	
3.Underlying Mechanism of Wuwei Shenqintang in Amelioration of Pulmonary Fibrosis by Regulating "Lung-intestine Axis" Based on UPLC-Q-TOF-MS Metabolomics Technology
Mengdi SUN ; Fang LU ; Donghua YU ; Yu WANG ; Pingping CHEN ; Shumin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2025;31(21):11-20
		                        		
		                        			
		                        			ObjectiveTo explore the mechanism of action of Wuwei Shenqintang in improving pulmonary fibrosis by using ultra-performance liquid chromatography-quadrupole-time-of-flight mass spectrometry (UPLC-Q-TOF-MS) for metabolomic analysis of lung tissue and feces. MethodsA rat model with pulmonary fibrosis was established by intratracheal injection of 5 mg·kg-1 bleomycin. The successfully modeled rats were randomly divided into a blank group, a model group, a prednisone (3.15 mg·kg-1) group, and low-dose, medium-dose, and high-dose groups of Wuwei Shenqintang (4.586, 9.172, 18.344 g·kg-1). The rats were given intragastric administration once a day for 28 consecutive days. Hematoxylin-eosin (HE) staining was used to measure the pathological changes in lung and colon tissue, and Masson staining was used to detect the degree of pulmonary fibrosis. Enzyme-linked immunosorbent assay (ELISA) was used to detect the expression of interleukin-1β (IL-1β), IL-6, IL-8, tumor necrosis factor-α (TNF-α), and secretory immunoglobulin A (SIgA) in bronchoalveolar lavage fluid and intestinal mucus. Immunohistochemistry and reverse transcription quantitative polymerase chain reaction (Real-time PCR) were used to detect the expression of type Ⅰ collagen (Col-Ⅰ), fibronectin (FN), and alpha smooth muscle actin (α-SMA) in lung tissue. UPLC-Q-TOF-MS was used to study the changes in the metabolic network of lung tissue and feces in rats with pulmonary fibrosis treated with Wuwei Shenqintang, screen potential biomarkers for the treatment of pulmonary fibrosis by Wuwei Shenqintang, and perform pathway enrichment analysis. ResultsCompared with the blank group, the model group showed extensive inflammatory cell infiltration and continuous fibrotic lesions in lung tissue, colonic mucosal damage, and connective tissue hyperplasia. The expression of IL-6, IL-8, IL-1β, TNF-α, and SIgA in bronchoalveolar lavage fluid and intestinal mucus was significantly increased (P<0.01). The expression of Col-Ⅰ, FN, and α-SMA proteins and mRNAs in lung tissue was significantly upregulated (P<0.01). Compared with the model group, the groups of Wuwei Shenqintang exhibited significantly reduced inflammatory infiltration and blue collagen deposition in lung tissue, alleviated colonic damage, decreased expression of IL-6, IL-8, IL-1β, TNF-α, and SIgA in bronchoalveolar lavage fluid and intestinal mucus (P<0.01), and reduced average absorbance values and mRNA expression of Col-Ⅰ, FN, and α-SMA in lung tissue (P<0.05, P<0.01), with the prednisone group and the medium-dose and high-dose groups of Wuwei Shenqintang showing the most significant effects. The metabolomics results for lung tissue showed that compared with the blank group, the model group had 19 significantly different compounds (P<0.05, P<0.01). Wuwei Shenqintang could normalize 17 of these compounds compared with the model group (P<0.05, P<0.01). Fecal metabolomics results showed that compared with those in the blank group, there were 42 compounds with significant differences in the model group (P<0.05, P<0.01). Compared with the model control group, Wuwei Shenqintang could normalize 41 of these compounds (P<0.05, P<0.01). The combined analysis results indicated that Wuwei Shenqintang might inhibit pulmonary fibrosis by regulating the biosynthesis of phenylalanine, tyrosine, and tryptophan as well as the retinol metabolism pathway. ConclusionWuwei Shenqintang can ameliorate pulmonary fibrosis, which may be related to the regulation of the "lung-intestine axis". 
		                        		
		                        		
		                        		
		                        	
4.Effect of Cannabidiol on Pulmonary Fibrosis Analyzed by UPLC-Q-TOF-MS
Mengdi SUN ; Feiyu ZHANG ; Huicong YANG ; Yu WANG ; Pingping CHEN ; Fang LU ; Shumin LIU
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(12):185-193
		                        		
		                        			
		                        			ObjectiveTo investigate the mechanism of anti-pulmonary fibrosis of cannabidiol by ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry(UPLC-Q-TOF-MS). MethodSD rats were randomly divided into blank group, model group, prednisone group(3.15 mg·kg-1) and cannabidiol low, medium and high dose groups(12, 36, 108 mg·kg-1), with 8 rats in each group. The rat model of pulmonary fibrosis was established by intratracheal injection of bleomycin(5 mg·kg-1), which was administered continuously for 28 days after successful modeling. The pathological changes of rat lung tissue were observed, and enzyme-linked immunosorbent assay(ELISA) was used to detect the expression levels of matrix metalloproteinase-7(MMP-7), type Ⅱ alveolar cell surface antigen(KL-6), pulmonary surfactant-associated protein A(SP-A) and SP-D in serum. The expression levels of type Ⅰ collagen(Col-Ⅰ) and fibronectin(FN) in lung tissues were detected by immunohistochemistry, and the expression of mucin 5 subtype AC(MUC5AC) was detected by immunofluorescence. UPLC-Q-TOF-MS was used to search for potential biomarkers and related metabolic pathways of cannabidiol in treating pulmonary fibrosis. ResultCompared with the blank group, there were a large number of inflammatory cell infiltration and continuous fibrosis lesions in the lung tissue of rats in the model group. Compared with the model group, the inflammatory infiltration and blue collagen deposition in the lung tissue of rats in the prednisone and cannabidiol groups were reduced. Compared with the blank group, the expressions of MMP-7, KL-6, SP-A and SP-D in serum of the model group were significantly increased(P<0.01), while the expressions of MMP-7, KL-6, SP-A and SP-D in the prednisone and cannabidiol high dose groups were significantly decreased by comparing with the model group(P<0.05, P<0.01). Compared with the blank group, the expression levels of Col-Ⅰ and FN in the lung tissues of the model group were significantly increased, and the fluorescence intensity of MUC5AC was significantly increased(P<0.01). Compared with the model group, the expression levels of Col-Ⅰ and FN in the lung tissues of the prednisone and cannabidiol high dose groups were significantly decreased(P<0.05, P<0.01), and the expression of MUC5AC was significantly decreased(P<0.01). Compared with the blank group, a total of 18 differential compounds were screened out in the model group, which could be used as potential biomarkers, and cannabidiol could call back 16 of them, mainly involving 4 metabolic pathways(linoleic acid metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, arachidonic acid metabolism, and niacin and niacinamide metabolism). Compared with the blank group, the relative contents of potential biomarkers arachidonic acid and linoleic acid were significantly increased in the model group(P<0.05, P<0.01), while the relative contents of 5,6-EET, L-tyrosine and niacinamide were significantly decreased(P<0.01). Compared with the model group, cannabidiol could significantly reduce the relative contents of arachidonic acid and linoleic acid, and significantly increase the relative contents of 5,6-EET, L-tyrosine and niacinamide(P<0.01). ConclusionCannabidiol has an intervention and remission effect on pulmonary fibrosis, and its mechanism may be related to linoleic acid metabolism, phenylalanine, tyrosine and tryptophan biosynthesis, arachidonic acid metabolism, niacin and niacinamide metabolism. 
		                        		
		                        		
		                        		
		                        	
5.Exploring the Molecular Mechanism of Aconiti Kusnezoffii Radix Ameliorates Diabetes Mellitus Type 2 Based on Systems Pharmacology
Tingting LIU ; Yue WU ; Qi CHEN ; Fuhou CHANG ; Mengdi ZHANG
Chinese Journal of Modern Applied Pharmacy 2024;41(5):606-618
		                        		
		                        			OBJECTIVE 
		                        			To explore the potential of Aconiti Kusnezoffii Radix in affecting diabetes mellitus type 2(T2DM) and the potential mechanism for T2DM related symptoms based on systematic pharmacology, bioinformatics, molecular docking and in vitro and in vivo experiments.
METHODS 
The database was used to search the related chemical components of Aconiti Kusnezoffii Radix, predict the potential targets and intervene related diseases. The differential genes of T2DM relative healthy people were retrieved from GEO database, mapped with the action target of Aconiti Kusnezoffii Radix, and placed in DAVID database for biological function enrichment. The sensitivity of the target gene to T2DM was analyzed by one-way ANOVA, binary logistic regression analysis and ROC curve. The binding position and interaction force between chemical compounds of Aconiti Kusnezoffii Radix and target proteins were analyzed by molecular docking technology. The effect of Aconiti Kusnezoffii Radix and its chemical compounds on the expression of target protein was verified by T2DM model in vivo and in vitro.
RESULTS 
Through database retrieval and analysis, 304 kinds of target related diseases(P value<0.05, FDR<0.05) were obtained, and T2DM with the highest degree value(Degree=59) was selected and analyzed. The 43 target genes were obtained from the intersection of differential genes in T2DM relatively healthy people and potential action targets of Aconiti Kusnezoffii Radix. A total of 9 genes with significant differences were obtained by one-way ANOVA, 5 meaningful genes were obtained by binary logistic regression analysis, and 3 genes with area under ROC curve AUC>0.5 were obtained. By molecular docking (+)-Isoboldine binds to proteins APEX1, CASP1 and CBFB, Napelline binds to proteins CBX1 and EHMT2 through different forces such as hydrogen bond interaction, ligand interaction, hydrophobic interaction, ionizability and electrostatic interaction, so as to increase the ability of ligands to target proteins. After 2 weeks of treatment with Aconiti Kusnezoffii Radix aqueous extract, Aconiti Kusnezoffii Radix may alleviated the symptoms of T2DM by improving peripheral neuropathy. Moreover, Aconiti Kusnezoffii Radix could affect the protein expression of APEX1, CASP1, CBFB, CBX1 and EHMT2 in rat liver tissue. The effect of (+)-Isoboldine and Napelline chemical compounds in Aconiti Kusnezoffii Radix on the target protein of the model in vitro was consistent with that in vivo.
CONCLUSION 
It is preliminarily revealed that Aconiti Kusnezoffii Radix can be used as a potential therapeutic drug to improve T2DM peripheral neuropathy, which lays a theoretical foundation for the research and development of Chinese Mongolian medicine and the excavation of new target drugs for the treatment of T2DM.
		                        		
		                        		
		                        		
		                        	
6.Construction and application of a management program for arm lymphedema prevention in postoperative breast cancer patients
Yanyan WANG ; Liangyi YAO ; Xin CHEN ; Ruqing LI ; Mengdi CAO ; Xueke QIAN ; Yanjin LIU ; Xing LI ; Yang CHEN ; Qing ZHAO
Chinese Journal of Nursing 2024;59(19):2309-2318
		                        		
		                        			
		                        			Objective To construct a management program for upper limb lymphedema prevention in postopera-tive breast cancer patients and to evaluate its effectiveness.Methods The first draft of the upper limb lymphede-ma prevention and management protocol for postoperative breast cancer patients was constructed on the basis of ev-idence summaries and qualitative interviews,and 2 rounds of correspondence were conducted in December 2022.Using the convenience sampling method,patients undergoing surgery for malignant tumours in the breast surgery de-partment of a tertiary-level hospital in Zhengzhou City were selected as the study subjects,and 58 patients admitted from January to March 2023 were included in the experimental group according to the time of their first visit.57 patients admitted from July to December 2022 were included in the control group and were given routine care.The rates of lymphedema occurrence,upper limb function score and patients'adherence to lymphedema prevention be-haviours after 1,3,and 6 months of intervention were compared between the 2 groups.Results The valid ques-tionnaire recovery rates of the 2 rounds of expert correspondence were 92.59%and 100%,and the authority coeffi-cients of the experts were 0.940 and 0.950,and the Kendall's harmony coefficients were 0.228 and 0.254,respec-tively(P<0.00 1).The coefficients of variation of the 2nd round of correspondence were 0.07~0.24.The final draft of the programme included 5 first-level entries,12 second-level entries,and 32 third-level entries.During the appli-cation of the programme,a total of 5 cases were dislodged,and 55 cases were finally included in each of the ex-perimental and control groups.The results of repeated measures ANOVA showed that there was an interaction ef-feet between the upper limb function scores and lymphedema prevention behavior compliance scores before inter-vention and at 1,3,and 6 months after discharge between the 2 groups(P<0.05).Simple effects analysis showed that at 1,3,and 6 months after discharge,the upper limb function score and lymphedema prevention behavior com-pliance score of the experimental group were better than those of the control group,and the differences were sta-tistically significant(P<0.05).At 6 months post-intervention,the difference in the occurrence of lymphedema was statistically significant when comparing the 2 groups(P=0.032).Adverse events such as subcutaneous bruising and falls did not occur in either group.Conclusion The upper limb lymphoedema prevention and management pro-gramme for postoperative breast cancer patients constructed in this study is scientific,feasible and safe,and can ef-fectively reduce the incidence of lymphoedema in patients and improve their quality of life.
		                        		
		                        		
		                        		
		                        	
7.Treatment of Pulmonary Inflammatory Diseases by Traditional Chinese Medicine Through Regulating Mitochondrial Oxidative Stress: A Review
Mengdi SHI ; Chao WANG ; Yafei YOU ; Lisha LU ; Yang YANG ; Weichao JING ; Lujia LIU ; Youpeng WANG
Chinese Journal of Experimental Traditional Medical Formulae 2024;30(14):249-258
		                        		
		                        			
		                        			Pulmonary fibrosis, chronic obstructive pulmonary disease, acute lung injury, asthma, and infectious pneumonia are common pulmonary inflammatory diseases worldwide. There is evidence that mitochondria produce a large amount of reactive oxygen species (ROS) when stimulated by inflammation, leading to oxidative stress that affects the onset and progression of pulmonary inflammatory diseases. With in-depth research, traditional Chinese medicine (TCM) has made significant progress in the treatment of pulmonary inflammatory diseases. An increasing amount of evidence indicates that single TCM and their active components, as well as TCM compound formulas, can improve mitochondrial oxidative stress status through multi-target and multi-pathway mechanisms, thereby effectively treating pulmonary inflammatory diseases. Currently, there is a lack of systematic review and summary of TCM research in this field both domestically and internationally. Therefore, this article aims to summarize and conclude the mechanisms by which TCM regulates mitochondrial oxidative stress to intervene in pulmonary inflammatory diseases, providing a scientific basis for its clinical application and offering new ideas and references for in-depth research on the prevention and treatment of pulmonary inflammatory diseases with TCM. 
		                        		
		                        		
		                        		
		                        	
8.The Study of Anti-inflammatory Effect of Acupuncture in Rats with Chronic Migraine Based on the α7nAChRs
Yuqi ZHENG ; Mingsheng SUN ; Yi LIU ; Mengdi ZHOU ; Leimiao YIN ; Ling ZHAO ; Dingjun CAI
World Science and Technology-Modernization of Traditional Chinese Medicine 2024;26(4):1050-1058
		                        		
		                        			
		                        			Objective To investigate the effect of acupuncture on the inflammatory changes of α7 nicotinic acetylcholine receptors(α7 nicotinic acetylcholine receptors,α7nAChRs)in rats with chronic migraine(CM).Methods Adult male SD rats were randomly divided into control group(VEH group),model group(NTG group),acupuncture group(TA group),α7nAChRs antagonist group(MLA group)and α7nAChRs agonist group(TA group)according to basic pain threshold.The rat model of CM was established by repeated subcutaneous injection of nitroglycerin(NTG)at the neck and back every other day.TA group and MLA group received acupuncture treatment one hour before NTG injection,20 minutes every day for 9 consecutive days.The MLA group was intraperitoneally injected with α7nAChRs antagonist MLA half an hours before acupuncture,and the PNU group was intraperitoneally injected with α7nAChRs agonist PNU-282987 half an hours before NTG injection,both groups were injected continuously for 9 days.The changes of paw withdrawal mechanical threshold(Paw Withdrawal Mechanical Threshold,PWMT)and tail-flick latency(Tail-Flick Latency,TFL)were detected by Von Frey and thermal radiation pain meter.The contents of inflammatory factors IL-1β,TNF-α and TGF-β in TNC and serum were determined by ELISA.The relative fluorescence intensity and co-expression of GFAP and α7nAChRs in TNC were detected by immunofluorescence dual labeling method.Results Compared with VEH group,PWMT and TFL in NTG group were significantly decreased(P<0.05 or P<0.01),the contents of IL-1β(P<0.01)and TNF-α(P<0.01,P<0.05)in serum and TNC were significantly increased;and in TNC,the astrocytes were activated significantly(P<0.01),while the relative fluorescence intensity of α7nAChRs and the co-expression of GFAP and α7nAChRs were significantly decreased(P<0.05,P<0.01).Compared with NTG group,PWMT and TFL in TA group were increased(P<0.05 or P<0.01),the contents of IL-1β(P<0.01)and TNF-α(P<0.01,P<0.05)in serum and TNC were increased;and in TNC,the relative fluorescence intensity of GFAP was significantly decreased(P<0.01),however the relative fluorescence intensity of α7nAChRs and the co-expression of GFAP and α7nAChRs were significantly increased(P<0.01).Compared with MLA group,PWMT and TFL in TA groups and PNU groups were significantly increased(P<0.05 or P<0.01).The contents of IL-1β(P<0.05)and TNF-α(P<0.01)in serum and TNC of TA group were increased,while the contents of TGF-β(P<0.05)were decreased.The contents of IL-1β in serum and TNC of PNU group were decreased(P<0.01,P<0.05),while the contents of TGF-β(P<0.01)were significantly increased.Conclusions Acupuncture can effectively relieve CM inflammatory response and hypersensitivity to pain,and its anti-inflammatory and analgesic effects may be related to the up-regulation of α7nAChRs expression.
		                        		
		                        		
		                        		
		                        	
9.Establishment of liver-specific Rbp4 knockout mice and analysis of glucose metabolism characteristics
Wanxian LU ; Qi MA ; Li WANG ; Mengdi LIU ; Baoping GUO
Acta Laboratorium Animalis Scientia Sinica 2024;32(4):493-502
		                        		
		                        			
		                        			Objective To establish a liver-specific Rbp4 gene knockout mouse model and to explore the effect of liver Rbp4 gene deletion on glucose metabolism.Methods Cre-LoxP technology was used to construct a liver-specific Rbp4 gene knockout mouse model using C57/BL6J and Alb-Cre mice.The genotype of the mice was identified by polymerase chain reaction and agarose gel electrophoresis.Ten 18 week old C57/BL6J male mice were included in the WT group,10 flox homozygous and Alb-Cre negative mice of the same age were included in the experimental control group(Rbp4flox/flox:Cre-),and 10 flox homozygous and Alb-Cre positive mice of the same age were included in the experimental group(Rbp4flox/flox:Cre+).Expression levels of RBP4 protein and mRNA in the liver were verified by Western Blot and quantitative reverse transcription-polymerase chain reaction(qRT-PCR),respectively,and expression levels of Rbp4 mRNA in other tissues were detected by qRT-PCR.Morphological changes in liver tissue were detected by hematoxylin and eosin staining.Blood glucose values were detected in mouse tail vein blood samples using a blood glucose meter,and glucose tolerance and insulin tolerance were determined.Expression levels of the liver glucose metabolism genes phosphoenolpyruvate carboxylase(Pepck)and glucose-6-phosphatase(G6pase)were detected by qRT-PCR.Results Liver-specific Rbp4 knockout mice were successfully bred and identified.RBP4 protein and mRNA levels were significantly decreased in the liver of Rbp4flox/flox:Cre+mice(P<0.05),but there was no significant difference in the relative expression levels of Rbp4 mRNA in fat,kidney,pancreas,spleen,heart,or muscle tissues among the three groups(P>0.05).Liver-specific Rbp4 knockout had no significant effect on liver morphology,glucose tolerance,or insulin tolerance(P>0.05).Pepck mRNA levels in the liver differed significantly among the three groups(P<0.05),and pairwise comparison showed that liver Pepck mRNA levels were significantly lower in Rbp4flox/flox:Cre+mice compared with levels in Rbp4flox/flox:Cre-mice(P<0.05).There was no significant difference in liver glucose-6-phosphatase(G6pase)mRNA expression among the three groups(P>0.05).Conclusions We successfully constructed a liver-specific Rbp4 knockout mouse model.Deletion of Rbp4 in the liver inhibited expression of Pepck mRNA in the liver,thus providing a basis for further exploration of the role of this gene in glucose metabolism in mice.
		                        		
		                        		
		                        		
		                        	
10.Construction of immortalized tree shrew corneal stromal cell line and investigation of viral infectivity
Xiangrong DING ; Liu CHEN ; Shurui HUO ; Mengdi QI ; Xin LIU ; Wenguang WANG ; Na LI ; Jiejie DAI ; Caixia LU
Acta Laboratorium Animalis Scientia Sinica 2024;32(5):610-619
		                        		
		                        			
		                        			Objective To establish an immortalized tree shrew corneal stromal cells(CSCs)line and to study its response to virus infection.Methods Primary tree shrew CSCs were isolated and cultured by the tissue block adhesion method.CSCs were then transfected with a lentivirus carrying the SV40T gene and monoclonal cells were selected for passage culture.The characteristics of the CSCs were investigated by morphological observation and compared with 40 generations until the 50 generations or more,immunofluorescence identification of vimentin and SV40T genes,karyotype examination,and cell proliferation curve.The CSCs were infected with herpes simplex virus-1(HSV-1)(McKrae strain),Zika virus(ZIKV,GZ01 strain),Dengue virus typeⅡ,and H1N1(PR8).Results The immortalized tree shrew CSCs after>50 passages appeared spindle-shaped with good cell morphology and structure compared with 40 generations.Positive immunofluorescence expression of vimentin and SV40T genes.The cell growth curve showed that the cells were in logarithmic-phase growth on days 4~5 and grew vigorously.The number of chromosomes in the primary cells was stable at 62,while immortalized CSCs had 64 chromosomes at P21 and P56.The virus titer results showed that the immortalized tree shrew CSCs were sensitive to HSV-1(McKrae strain),ZIKV(GZ01 strain),Dengue virus typeⅡ,and H1N1(PR8),with virus titers of 1.32×105,5.62×106,2.69×107,and 7.76×104 CCID50/mL,respectively.Conclusions The immortalized tree shrew CSCs were established successfully,suggesting that this cell line is suitable for studies of the mechanisms of HSV,ZIKV,Dengue virus,and influenza A virus infection in relation to corneal diseases and antiviral drugs.
		                        		
		                        		
		                        		
		                        	
            

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