1.Research on the innovative mode of comprehensive ability training for the Chinese medicine majors based on the combination of "multi-mode and multi-ways"
Han ZHANG ; Yan ZHANG ; Xingjun WANG ; Xuji SHEN ; Mengdi ZHENG
International Journal of Traditional Chinese Medicine 2018;40(6):551-553
Chinese medicine talents are the foundation and guarantee for the development of TCM, and the first resource for the inheritance and innovation of traditional Chinese medicine. Reforming the curriculum system and training mode of Chinese medicine, training Chinese medicine professional who are suitable for research and development of Chinese medicine, such as cultivation of Chinese medicine materials, quality detection, species identification and resource census, is the direction of further expansion and reformation of Chinese medicine education. In this article, on account of the characteristic of Chinese medicine professional courses, we will combine practice education mode with professional knowledge competition, to probe innovative mode of comprehensive ability training for Chinese medicine based on the combination of"Multi-mode and Multi-Ways". The new mode of Chinese medicine education is to provide reference for trainers of Chinese medicine.
2.Exploration of creating a Chinese materia medica teaching system based on the Qinling plant gene database
Yan ZHANG ; Han ZHANG ; Xingjun WANG ; Xuji SHEN ; Mengdi ZHENG ; Caixia WEI ; Yonghui FENG
International Journal of Traditional Chinese Medicine 2019;41(2):203-205
Qinling is a treasury of medicine with abundant resources of herbs. Due to the goal of enriching teaching contents, quality of teaching and creating a Chinese materia medica teaching system. Based on the Qinling plant gene database, our education team presents a series of innovative thoughts, such as multidisciplinary contact, inheriting and carrying forward the folk medicine, attaching importance to the practical application of herbs in Qinling and theory with practice to enrich teaching contentsand creating Shanxi characteristic teaching system of Chinese materia madica.That makes a contribution to raise the level of teaching in modern traditional Chinese medicine and promote the development of medicine in Shannxi.
3.Study on the techniques of purification flavones from Gnaphalium japonicum Thunb. by D-101 macroporous adsorption resin
Mengdi ZHENG ; Yong WANG ; Xingjun WANG ; Yan ZHANG ; Xuji SHEN ; Han ZHANG
International Journal of Traditional Chinese Medicine 2018;40(10):965-969
Objective To investigate the optimal isolation and purification conditions of flavonoids in Gnaphlium affine Thunb. and the content of flavonoids in different parts of Gnaphlium affine Thunb. was measured. Methods The separation and purification abilities of D-101 macroporoue adsorbing resins for flavonoids in Gnaphlium affine Thunb. were studied with adorption and desorption as index. The static adsorption and dynamic adsorption methods were used to analyze the effects of static saturated adsorption, static elution rate, sample concentration, sample pH value, eluent concentration and amount of eluent. The flavonoids concentrations were determined with rutin as standard. Results The D-101 macroporous adsorption resin had good effect on the separation and purification of flavonoids from Gnaphlium affine Thunb.; The optimal conditions for purification were: sample concentration 1.0 mg/ml, sample pH=4, 60% ethanol as desorption solvent, washing flow 2 BV/h, with these parameters. With such condition, the purity of flavonoids in Gnaphlium affine Thunb. was 60.92%; The content of flavonoids in Gnaphlium affine Thunb. showed the highest content was in the stem, the second in the flower, and the least in the root. Conclusions The purification of flavonoids from the D-101 macroporous adsorption resin increased in the best purified separation conditions and the content of flavonoids was the highest in the leaf.
4.Gas chromatography-mass spectrometry analysis of volatile oil chemical composition in perilla leaf and perilla stem
Yan ZHANG ; Bo CHEN ; Qiang LIU ; Mengdi ZHENG ; Yimei TANG ; Hongjuan TONG ; Xifeng ZHAI ; Jing LIU
International Journal of Traditional Chinese Medicine 2020;42(7):679-682
Objective:To explore the difference of constituents and contents of volatile oil in Perilla leaf and Perilla stem.Methods:The volatile oils of Perillaleaf and Perillastems were extracted with steam distillation method. Gas chromatography-mass spectrometry (GC-MS) technique was used to detect the chemical constituents of volatile oil from different parts of Perilla frutescens. The relative percentage content of each component was determined by peakarea normalization method, and the differences of the components and contents of volatile oils from different parts of Perilla frutescens were compared.Results:A total of 24 volatile oil components were identified in perilla leaves and 19 volatile oil components in Perilla stems. The most components in Perilla leaf and Perilla stems was 2-Hexanoyl furan. The content of 2-Hexanoyl furan in the oil of Perilla leaf reached 67.493%. The content of 2-Hexanoyl furan in the oil of Perilla stem reached 70.473%.Conclusions:The composition and content of volatile oil in different parts of Perillafrutescens are different.
5.Study on molecular marker screening and evaluation of Rubi Fructus and its analogues
Mengdi ZHENG ; Lingling ZHANG ; Qi ZHANG ; Long GUO ; Xingjun WANG
International Journal of Traditional Chinese Medicine 2024;46(6):792-796
Objective:To standardize the origin of Rubi Fructus by using ITS2 and matK molecular markers to identify Rubi Fructus and its analogues. Methods:The ITS and matK sequences of Rubus chingii Hu, Rubus corchorifolius L.f., Rubus hirsutus Thunb., Rubus parvifolius L., Rubus buergeri Miq. and Rubus lambertianus Ser. were amplified and sequenced. The hidden Markov model was used to remove 5.8S and 28S from ITS sequences. A total of 25 ITS2 sequences were obtained. And a total of 22 matK sequences were obtained by proofreading by Glustal software. MEGA software was used for matK and ITS2 sequences analysis, intraspecific and interspecific genetic distances caculation, and neighbor joining (NJ) phylogenetic tree construction. ITS2 secondary structure was predicted by ITS2 database and aligned by 4Sale software. Profile neighbor-joining (PNJ) phylogenetic tree was constructed based on combined ITS2 sequence and its secondary structure by ProfDistS software. Results:An obvious barcoding gap between Rubi Fructus and its analogues was showed. The topological relationship between NJ tree and PNJ tree was consistent, and each taxon exhibits monophyly. The ITS2 secondary structure of Rubi Fructus was significant different from its analogues.Conclusions:It is recommended that both ITS2 and matK markers can serve as DNA barcodes for identifying Rubi Fructus and its analogues. The addition of ITS2 secondary structure information can enrich the identification results and provide theoretical support for resource research and variety selection of Rubi Fructus.
6. Efficacy and safety of rifabutin and furazolidone included triple regimen and minocycline plus furazolidone included quadruple regimen in eradicating refractory Helicobacter pylori infection
Mengdi LI ; Zinan WANG ; Songbai ZHENG
Chinese Journal of Digestion 2019;39(12):812-816
Objective:
To observe the efficacy and safety of rifabutin and furazolidone included triple regimen and minocycline plus furazolidone included quadruple regimen in eradicating refractory
7.Clinical significance of expression of leptin in patients with biliary atresia and hepatic fibrosis
Qiong WANG ; Qipeng ZHENG ; Cong ZHANG ; Lingzhi CHEN ; Mengdi LI ; Renjie YANG ; Fangyuan ZHAO ; Yingyi QI ; Wenfan XUE ; Jianghua ZHAN
Chinese Journal of Hepatobiliary Surgery 2022;28(4):275-279
Objective:To study the relationship and the role of leptin in children with biliary atresia and hepatic fibrosis to provide a treatment basis for these patients.Methods:The clinical data of children with biliary atresia or congenital biliary dilatation (CBD) who underwent surgical treatment at the Department of General Surgery of Tianjin Children's Hospital from August 2019 to August 2021 were retrospectively analyzed. Of 31 children included in this study, there were 14 males and 17 females, with age of 60 (30, 63) d. Children with biliary atresia served as the study group ( n=26) and children with CBD served as the control group ( n=5). Leptin protein, α-smooth muscleactin (α-SMA) and phosphorylation of extracellular-regulated protein kinase 1/2 (p-ERK1/2) in liver tissues were detectd by immunohistochemistry (IHC). The expression level of leptin mRNA in liver tissues were detected by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). Results:The average optical density values of leptin protein, α-SMA protein and p-ERK1/2 protein in the liver tissues of children in the study group were significantly higher than the control group ( P<0.05). The expression levels of leptin, α-SMA and p-ERK1/2 in liver tissues of children with biliary atresia significantly increased with increase in fibrosis degree ( P<0.05). The expression level of leptin in liver tissues of children with biliary atresia was positively correlated with the liver fibrosis grade ( rs=0.876), α-SMA ( r=0.723) and p-ERK1/2 ( r=0.725) ( P<0.01). The results of qRT-PCR showed that the content of leptin mRNA in liver tissues of children with biliary atresia was significantly higher than that of children with CBD ( P<0.05). Conclusion:Expressions of leptin increased with aggravation of degrees of hepatic fibrosis in biliary atresia. Leptin may be involved in activation of HSCs through the ERK1/2 signaling pathway in the process of hepatic fibrosis due to biliary atresia.
8.GC-MS analysis of volatile oil chemical composition in the leaves of phlomis umbrosa from different habitats
Yan ZHANG ; Yimei TANG ; Mengdi ZHENG ; Qiang LIU ; Xifeng ZHAI ; Jie ZHANG
International Journal of Traditional Chinese Medicine 2020;42(5):464-468
Objective:To explore the composition and content differences of volatile oil in the leaves of Phlomis umbrosa from different habitats, in order to clarify the chemical composition and content on efficacy.Methods:To collect the Phlomis umbrosa from Haoping area in Mei county and Sanyuan county of Shaanxi province. The volatile oil of Phlomis umbrosa was extracted by steam distillation method. Gas chromatography- mass spectrometry (GC-MS) was used to detect the chemical constituents of volatile oil.Results:Forty-nine kinds of volatile components were identified from the leaves collected in Haoping area of Mei county and fifty-six volatile component were identified from the leaves collected in Sanyuan county. There are five ingredients in common, excluding diacetone alcohol. 2-tert-butoxy-5-methylthiophene is the main volatile oil composition and the content reached 18.009% of leaves collected from Haoping area in Mei county, while paclitaxel is main volatile oil composition and the content reached 50.728% in Sanyuan county.Conclusions:The chemical compostion and content of volatile oil of Phlomis umbrosa in different habitats are different.
9.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.
10.Effects of Acupuncture on Gut Microbiota and Central Iinflammation in Rat Model of Migraine based on"Gut-Brain"Theory
Mingsheng SUN ; Xingyu CHEN ; Mengdi ZHOU ; Yi LIU ; Yuqi ZHENG ; Siying HUANG ; Dingjun CAI ; Ling ZHAO
World Science and Technology-Modernization of Traditional Chinese Medicine 2023;25(8):2726-2734
Objective Based on the theory of"gut-brain",this study explored the effect of acupuncture on the gut microbiota and central inflammation in migraine model rats,in order to explore the mechanism of acupuncture in the treatment of migraine from the perspective of"gut-brain".Methods The migraine rat model was established by subcutaneous injection of nitroglycerin.They were randomly divided into a model group and an acupuncture group,with 6 rats in each group,and a control group with 6 rats for conventional binding and fixation.Before modeling and on the 1st,5th,and 9th days after modeling,each group used electronic VonFrey to measure the plantar mechanical pain threshold of rats.After the experiment,Elisa was used to detect the expression levels of inflammatory factors IL-6 and TNF-α in the central trigeminal spinal nucleus of the rats in each group.Three-generation Pacbio full-length microbial diversity sequencing was used to perform 16S full-length rDNA sequencing on each group of fecal samples to detect the operational taxonomic unit(OTU)clustering and its abundance,Alpha diversity index,Beta diversity index,species among the samples in each group.differences in abundance.Results In migraine model rats,plantar mechanical pain threshold was significantly decreased(P<0.01),central IL-6 and TNF-α contents were significantly increased(P<0.01),and the structure and abundance of gut microbiota were abnormal.change(P<0.01).Continuous acupuncture treatment can significantly increase the plantar mechanical pain threshold in migraine rats(P<0.01),regulate the diversity of gut microbiota in migraine rats,increase Lactobacillus murine,and reduce the abundance of Lactobacillus enterobacteriaceae.degree(P<0.05),and decreased the levels of IL-6 and TNF-α in the central nervous system of migraine model rats(P<0.01).Conclusion Acupuncture can exert the"gut-brain"anti-inflammatory and analgesic effect of acupuncture in the treatment of migraine by regulating the gut microbiota structure and the expression of central IL-6 and TNF-α inflammatory factors in migraine model rats.