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1.
Chinese Pharmacological Bulletin ; (12): 431-439, 2024.
Article in Chinese | WPRIM | ID: wpr-1013653

ABSTRACT

Aim To investigate the regulatory effect of geraniol on Nrf2/HO-1 signaling pathway after cerebral ischemia-reperfusion(I/R)in rats. Methods In this experiment,all the male SD rats were randomly divided into nine groups receiving the following treatments:sham operation(sham); sham operation+200 mg·kg-1 geraniol; I/R; I/R+50 mg·kg-1 geraniol; I/R+100 mg/kg geraniol; I/R+200 mg·kg-1 geraniol; edaravone; I/R+ brusatol(Nrf2 inhibitor); I/R+200mg·kg-1 geraniol+brusatol. All rats received intraperitoneal injection of geraniol for five consecutive days before MCAO and again after MCAO. During the construction of cerebral I/R injury models,the blood vessels were isolated without any suture in the sham operation and the sham operation +200 mg·kg-1 geraniol groups while the blood vessels with suture in other groups. The damage of neurological function was evaluated by the modified rating scale for neurological function. The TTC,HE and Tunel staining methods were used to determine the cerebral infarction volume,the damage of the ischemic cortex and the apoptosis of cortical cells,respectively. The oxidative stress-related parameters then were measured. The protein expressions of Nrf2 and HO-1 were detected by immunohistochemical staining and the target protein expressions of the injured cortex were detected by Western blot. Results Compared with the model group,it was found that the geraniol treatment significantly repaired neural injury,reduced cerebral infarction volume,cerebral cortex damage and cell apoptosis. Meanwhile,geraniol intervention could significantly increase the expression of Nrf2/HO-1 protein in the right-sided cortex and reduce oxidative stress level. Conclusion Geraniol can attenuate cerebral injury induced by ischemia-reperfusion in rats via activating Nrf2/HO-1 signaling pathway.

2.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 205-214, 2024.
Article in Chinese | WPRIM | ID: wpr-1011460

ABSTRACT

Yigongsan is derived from Xiaoer Yaozheng Zhijue written by QIAN Yi in the Northern Song dynasty, which is the No. 3 formula in the Catalogue of Ancient Famous Classical Formulas(The Second Batch of Pediatrics) released by the National Administration of Traditional Chinese Medicine(TCM) in September 2022, and it can be developed as a class 3.1 new TCM drug. By referring to ancient medical books and modern literature, this study conducted herbal textual research on Yigongsan from five aspects, including historical evolution, origin and processing, dosage conversion, usage and preparation methods, and functional application, then formed the key information table of this formula, in order to provide reference for the development of reference samples and preparations of Yigongsan. Based on the results of the study, it is recommended that Panax ginseng should be removed the basal part of stem(rhizoma), Poria cocos should be removed the peel, Citrus reticulata should be cut into shreds and Glycyrrhiza uralensis should be used. According to 4.13 g/Qian(钱), 1 g/slice for ginger, 3 g for each jujube and 300 mL/Zhan(盏), the doses of Ginseng Radix, Poria, Atractylodis Macrocephalae Rhizoma, Glycyrrhizae Radix et Rhizoma, Citri Reticulatae Pericarpium, Zingiberis Rhizoma Recens, Jujubae Fructus were 1.652, 1.652, 1.652, 1.652, 1.652, 5, 6 g, and the total amount was 19.26 g. The decocting method was to crush the medicinal materials into fine powder with 50-80 mesh, add 300 mL of water and decoct to 210 mL for each dose, then remove the dregs and take it warmly. This formula was recorded in ancient books as the main treatment for the cold-deficiency of spleen and stomach, and Qi stagnation in children with vomiting and diarrhea and lack of appetite. It has been flexibly applied by later generations of physicians, and is often used to treat anorexia, inflammation of the digestive tract, diarrhea and other diseases in children.

3.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 152-160, 2024.
Article in Chinese | WPRIM | ID: wpr-1003777

ABSTRACT

ObjectiveThe biosynthetic pathways of benzylisoquinoline alkaloids(BIAs) in Nelumbo nucifera are of great theoretical and economic value. In this paper, N. nucifera O-methyltransferase(NnOMT) and N. nucifera N-methyltransferase(NnNMT) gene families were identified and analyzed by bioinformatics in order to facilitate the biosynthetic pathway of BIAs in N. nucifera. MethodBased on the whole genome of N. nucifera, UniPort and National Center for Biotechnology Information(NCBI) databases were used to identify the NnOMT and NnNMT gene families of N. nucifera, and analyze their physicochemical properties and subcellular localization, then TBtools, MEME, MEGA 11.0, FigTree 1.4.4 and other tools were used to analyze the phylogeny, sequence characteristics, gene structure, functional annotation and cis-acting elements of NnOMT and NnNMT genes identified in the previous stage. ResultA total of 61 NnOMT and NnNMT genes were identified in this paper, the number of amino acids encoded by these genes ranged from 168 aa to 580 aa, the isoelectric point ranged from 4.76 to 9.16, and the relative molecular weight ranged from 18 699.52 Da to 64 934.53 Da, most of which showed acidic and mostly hydrophilic proteins. There were 10 conserved motifs, Kyoto Encyclopedia of Genes and Genomes(KEGG) analysis enriched a total of 12 pathways, including metabolism, biosynthesis of phenylpropane and isoquinoline alkaloids, etc. And Visualization of Gene Ontology(GO) enrichment results showed that 61 NnOMT and NnNMT genes were annotated to 32 items, which included 16 molecular functions[such as reduced nicotinamide adenine dinucleotide(NADH) activity and exopeptidase activity] and 16 biological processes(such as metabolic process of carbon tetrachloride, anaerobic carbon tetrachloride metabolic process and responses to exogenous biological stimuli). There were a variety of cis-acting elements in the promoter regions of NnOMT and NnNMT genes, mainly promoter and enhancer regions element, light responsive element and methyl jasmonate responsive element. ConclusionIn this study, a comprehensive bioinformatics analysis of 61 NnOMT and NnNMT genes is carried out based on the genome data of N. nucifera, which lays a foundation for research on the gene structure and function of NnOMT and NnNMT gene families, and provides a reference for biosynthetic pathway elucidation of BIAs in N. nucifera.

4.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 149-156, 2023.
Article in Chinese | WPRIM | ID: wpr-973144

ABSTRACT

ObjectiveTo explore the pretreatment methods to promote the enzymatic digestion and extraction of active ingredients from Magnoliae Officinalis Cortex dregs(MOCD), and to provide a reference basis for the utilization of resource components in MOCD. MethodLiquid chromatography-mass spectrometry(LC-MS) was used for qualitative analysis of resource components in MOCD with an Agilent C18 reversed-phase column(3.0 mm×100 mm, 2.7 µm) at the flow rate of 0.4 mL·min-1, the mobile phase was water(A)-acetonitrile(B) for gradient elution(0-3 min, 25%-48%B; 3-6 min, 48%-59%B; 6-10 min, 59%-80%B; 10-20 min, 80%-90%B; 20-25 min, 90%B), electrospray ionization(ESI) was employed with negative ion mode scanning and scanning range of m/z 50-1 200. A high performance liquid chromatography(HPLC), which refered to the determination in the 2020 edition of Chinese Pharmacopoeia, was used for quantitative analysis of resource components in MOCD. Four kinds of pretreatment agents were used to separate the resource components from MOCD, and the mechanism of different pretreatment agents was investigated by field emission scanning electron microscopy(FESEM), X-ray powder diffraction(XRD) and Fourier transform infrared spectroscopy(FT-IR). ResultMagnolol, honokiol and lignocellulose were identified as the main resource components of MOCD by qualitative and quantitative analysis. Under the conditions of 1% NaOH, reaction temperature at 80 ℃ and reaction time of 60 min, the concentration of reducing sugar produced by the enzymatic hydrolysis was 32.18 g·L-1, which was 79.8% higher than that of the untreated MOCD. After adding tween-80, the enzymatic hydrolysis time was reduced to 1/3 of the original time, the concentration of reducing sugar was increased by 102.0%. And the total recovery of magnolol and honokiol in the pretreatment solution was 69.23%. ConclusionMagnolol, honokiol and lignocellulosic components in MOCD are valuable for development and utilization, the combination of alkaline pretreatment and tween-80 can realize the recovery and utilization of these three resource components, which can provide a new idea for comprehensive utilization of resource components in MOCD.

5.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 160-170, 2023.
Article in Chinese | WPRIM | ID: wpr-972298

ABSTRACT

ObjectiveCYP71 gene family is one of the CYP71 clans belonging to cytochrome P450, which plays an important role in secondary metabolites, especially terpenoid biosynthesis. To understand the characteristics of CYP71 family of diploid Perilla frutescens and predict its function, this study identified and systematically analyzed the family by bioinformatics. MethodOn the basis of the whole genome of diploid P. frutescens PC99, the conserved domains of CYP71 family of diploid P. frutescens were screened, and the sequence characteristics, gene structure, chromosome location, phylogeny and cis-acting elements were analyzed by National Center for Biotechnology Information (NCBI), TBtools, MEME, Molecular Evolutionary Genetics Analysis (MEGA), Cytoscape and other tools. ResultA total of 68 CYP71 genes were identified from diploid P. frutescens, which were unevenly distributed on 34 chromosomes and belonged to two subfamilies. They encoded 481-530 amino acids and contained 10 conserved motifs, with the isoelectric point of 5.70-9.03 and the molecular weight of 54 217.07-60 031.79 Da. The enrichment analysis and functional annotation analysis revealed 11 enriched pathways and 114 categories, and the genes were mainly annotated in biological processes. There were many cis-acting elements in the promoter region of CYP71, mainly light-responsive and methyl jasmonate-responsive elements. Protein-protein interaction analysis indicated that CYP71 protein had multiple functions such as terpene cyclase activity. ConclusionThis study lays a foundation for the functional study of CYP71 family, and provides a reference for the biosynthesis of monoterpenes in P. frutescens and the directional cultivation of excellent varieties.

6.
China Journal of Chinese Materia Medica ; (24): 5195-5204, 2023.
Article in Chinese | WPRIM | ID: wpr-1008717

ABSTRACT

The 3-succinate-30-stearyl glycyrrhetinic acid(18-GA-Suc) was inserted into glycyrrhetinic acid(GA)-tanshinone Ⅱ_A(TSN)-salvianolic acid B(Sal B) liposome(GTS-lip) to prepare liver targeting compound liposome(Suc-GTS-lip) mediated by GA receptors. Next, pharmacokinetics and tissue distribution of Suc-GTS-lip and GTS-lip were compared by UPLC, and in vivo imaging tracking of Suc-GTS-lip was conducted. The authors investigated the effect of Suc-GTS-lip on the proliferation inhibition of hepatic stellate cells(HSC) and explored their molecular mechanism of improving liver fibrosis. Pharmacokinetic results showed that the AUC_(Sal B) decreased from(636.06±27.73) μg·h·mL~(-1) to(550.39±12.34) μg·h·mL~(-1), and the AUC_(TSN) decreased from(1.08±0.72) μg·h·mL~(-1) to(0.65±0.04) μg·h·mL~(-1), but the AUC_(GA) increased from(43.64±3.10) μg·h·mL~(-1) to(96.21±3.75) μg·h·mL~(-1). The results of tissue distribution showed that the AUC_(Sal B) and C_(max) of Sal B in the liver of the Suc-GTS-lip group were 10.21 and 4.44 times those of the GTS-lip group, respectively. The liver targeting efficiency of Sal B, TSN, and GA in the Suc-GTS-lip group was 40.66%, 3.06%, and 22.08%, respectively. In vivo imaging studies showed that the modified liposomes tended to accumulate in the liver. MTT results showed that Suc-GTS-lip could significantly inhibit the proliferation of HSC, and RT-PCR results showed that the expression of MMP-1 was significantly increased in all groups, but that of TIMP-1 and TIMP-2 was significantly decreased. The mRNA expressions of collagen-I and collagen-Ⅲ were significantly decreased in all groups. The experimental results showed that Suc-GTS-lip had liver targeting, and it could inhibit the proliferation of HSC and induce their apoptosis, which provided the experimental basis for the targeted treatment of liver fibrosis by Suc-GTS-lip.


Subject(s)
Humans , Liposomes , Hepatic Stellate Cells , Glycyrrhetinic Acid/pharmacology , Liver , Liver Cirrhosis/genetics , Collagen/pharmacology
7.
China Journal of Chinese Materia Medica ; (24): 1700-1704, 2023.
Article in Chinese | WPRIM | ID: wpr-970642

ABSTRACT

Chinese patent medicines(CPMs) are unique therapeutic drugs in China. Establishing and improving the evaluation criteria is an important measure to promote the high-quality development of CPMs. Based on the "evaluation criteria of high-grade CPMs with quality as the core index" established by our group in 2018, the "high-quality evaluation criteria for CPMs based on whole process control" was proposed in the present study in 2022. The scope of application and basic principles of the new criteria were clarified. A quality evaluation scoring table was established in the new criteria, including five parts: raw material selection, production process, quality control, efficacy evaluation, and brand building. The technical evaluation indexes involved have increased from 20% in the original criteria to 70% in the new criteria, and efficacy evaluation has been added in the new criteria. The subjective evaluation indicators account for a large proportion in the original criteria, which is prone to bias. The improved criteria overcome this shortcoming. It is expected that the new criteria as a basis can play a better role in the selection of high-quality products of CPMs, guide enterprises and institutions to participate actively in the evaluation and research of high-quality CPMs, and promote the high-quality development of CPMs.


Subject(s)
Medicine, Chinese Traditional , Drugs, Chinese Herbal/therapeutic use , Nonprescription Drugs , Chlorobenzenes , China
8.
Chinese Journal of Hepatology ; (12): 705-709, 2023.
Article in Chinese | WPRIM | ID: wpr-986198

ABSTRACT

Objective: To investigate the clinical features and long-term prognosis of primary biliary cholangitis (PBC) in patients with past hepatitis B virus (HBV) infection. Methods: 353 cases with PBC who visited the Liver Disease Center of Beijing Friendship Hospital Affiliated to Capital Medical University between January 2000 and January 2018 were retrospectively analyzed and were divided into the past HBV infection group (156 cases) and the no HBV infection group (197 cases). The two groups' baseline clinical features were compared. Ursodeoxycholic acid response rate after one year, GLOBE score, UK-PBC score, and long-term liver transplantation-free survival rate were compared through outpatient and telephone follow-up. Results: PBC with past HBV infection had a significantly reduced female proportion compared to the no HBV infection group (91.9% vs. 79.5%, P = 0.001). However, there were no statistically significant differences in age, biochemical indices, immunological indicators, platelet count, cirrhosis proportion, and others. Ursodeoxycholic acid biochemical response rate was reduced in patients with past HBV infection at the end of one year of treatment, but the difference was not statistically significant (65.8% vs. 78.2%, P = 0.068). In addition, there were no statistically significant differences between the GLOBE score (0.57 vs. 0.59, P = 0.26) and UK-PBC 5-year (2.87% vs. 2.87%, P = 0.38), 10-year (9.29% vs. 8.2%, P = 0.39) and 15-year liver transplantation rates (16.6% vs. 14.73%, P = 0.39). Lastly, the overall 5-year liver transplantation-free survival rate had no statistically significant difference between the two groups of patients (86.4% vs. 87.5%, P = 0.796). Conclusion: Primary biliary cholangitis had no discernible effect in terms of age at onset, biochemical indices, immunological indicators, cirrhosis proportion, ursodeoxycholic acid response rate after one year, GLOBE score, UK-PBC score, or overall liver transplantation-free survival rate in patients with past hepatitis B virus infections.

9.
Chinese Journal of Hepatology ; (12): 357-361, 2022.
Article in Chinese | WPRIM | ID: wpr-935954

ABSTRACT

Connective tissue disease (CTD) are closely related to liver abnormality. CTD can affect the liver causing various degrees of liver injury, coexist with other liver diseases, especially autoimmune liver disease (ALD). Medications for CTD can also lead to liver injury or reactivate the hepatitis B virus. CTD patients can also be positive for ALD-related autoantibodies without corresponding manifestation; and vis versa. The diagnosis and differential diagnosis should be made on integrating clinical presentation, laboratory, imaging, and histological studies, not solely relying on autoantibody positivity.


Subject(s)
Humans , Autoantibodies , Autoimmune Diseases/diagnosis , Connective Tissue Diseases/diagnosis , Diagnosis, Differential , Liver
10.
China Occupational Medicine ; (6): 657-661, 2022.
Article in Chinese | WPRIM | ID: wpr-976093

ABSTRACT

@#Objective To investigate the effects of mercury on T lymphocytes and serum immune indexes of workers with Methods occupational mercury exposure. A total of 45 workers with occupational mercury exposure were selected as the , mercury exposure group and 47 workers without occupational mercury exposure were selected as the control group using the judgment sampling method. Cold atomic absorption spectrometry was used to detect the urinary mercury level of the two groups. ( ) +, + +, + + - + Flow cytometry was used to detect the proportion of cluster of differentiation CD 3 CD3CD4 CD3CD8 and CD3CD19 , - ( - ) - ( - ) cells in peripheral blood and the levels of tumor necrosis factor α TNF α and interleukin 8 IL 8 in serum. The levels of ( ) , Results immunoglobulin Ig A IgG and IgM in serum were measured by immune nephelometry. The urinary mercury level of ( : vs ,P ) individuals in the mercury exposed group was higher than that of the control group median 92.7 13.2 μg/g Cr <0.01 . The +, + +, - + proportion of CD3 CD3CD4 CD3CD19 cells in peripheral blood and serum IgG level in the mercury exposed group ( P ), - - ( P ) decreased all <0.05 and the serum TNF α and IL 8 levels increased all <0.01 compared with the control group. Urinary - + mercury level was negatively correlated with the proportion of CD3CD19 cells in peripheral blood and serum IgG level in the [ (r) , , P ], study subjects Spearman correlation coefficient S were −0.21 and −0.31 respectively all <0.05 and positively - - (r , , P ) , correlated with serum TNF α and IL 8 levels S were 0.36 and 0.39 respectively all <0.05 . However the urinary mercury ( P ), +, + +, level was neither correlated with IgA and IgM levels in serum all >0.05 nor with the proportion of CD3 CD3CD4 + + ( P ) Conclusion CD3CD8 cells in peripheral blood all >0.05 . Occupational exposure to mercury can lead to abnormal , changes in peripheral blood T lymphocyte subsets B lymphocytes and serum immune factors in workers. The mercury load of occupational mercury exposure workers may impact their immune function.

11.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 138-146, 2022.
Article in Chinese | WPRIM | ID: wpr-943094

ABSTRACT

Jianwei Xiaoshi tablets, as a common variety of Chinese patent medicine with "one product with many manufacturers", have many manufacturers and huge market sales. However, the phenomenon about uneven quality and discrepant price is prominent. Based on this, this study was carried out for the quality evaluation of Jianwei Xiaoshi tablets by applying the high-quality evaluation criteria with the quality as core for Chinese patent medicine, which was based on the full production cycle, from the multi-dimension including raw material selection, production process, quality control, post-marketing research and so on. The evaluation results showed that the quality evaluation scores of Jianwei Xiaoshi tablets from different manufacturers varied greatly (ranging from 35 to 66), indicating that the quality was significantly different. In the actual production, generally inadequate attention was paid to the quality of raw materials, and the quality of raw materials was insufficient with the score ratio of 43%, especially the poor consistency control of them. The role of good manufacturing practice was obvious, and the scores of production process were generally high with the average score ratio of 62%, and the maximum up to 80%. The technological advancement of the manufacturer was outstanding. The score ratio of quality control was only 31% that the internal quality standard of each manufacture almost stayed at the qualified line, which was equal to the national standard, and the consistency of products was insufficient. The post-marketing research was lacking with the score ratio of 37%. Manufacturers with high brand awareness and market share were upper scores, while the others lagged far behind. The results of this evaluation are in line with the overall prediction, which can provide a reference for the high-quality evaluation of Chinese patent medicine, and supply the scientific data for high-quality and high-price application.

12.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 171-177, 2021.
Article in Chinese | WPRIM | ID: wpr-905910

ABSTRACT

Objective:Aiming at the residue of Shaoyao Gancaotang, the extraction, qualitative and quantitative study of the small molecule resource components were carried out to clarify the residual small molecule chemical components in the residue and explore the ways of its resource utilization. Method:The ultra-performance liquid chromatography-quadrupole-time-of-flight tandem mass spectrometry (UPLC-QTOF-MS/MS) was used to qualitatively identify the residual small molecule substances in the dregs of Shaoyao Gancaotang. Agilent C<sub>18</sub> reversed-phase chromatographic column (3.0 mm×100 mm, 2.7 µm) was used at the flow rate of 0.4 mL·min<sup>-1</sup>, the injection volume was 5 µL, and the mobile phase was gradient eluted with 0.05% formic acid aqueous solution (A)-acetonitrile (B) (0-1 min, 14%-17.5%B; 1-3 min, 17.5%-19%B; 3-4 min, 19%-20%B; 4-5 min, 20%B; 5-6 min, 20%-21%B; 6-9 min, 21%B; 9-22 min, 21%-36%B; 22-23 min, 36%B; 23-32 min, 36%-43%B), electrospray ionization (ESI) was employed with negative ion mode scanning and scanning range of <italic>m</italic>/<italic>z</italic> 50-1 200. A high performance liquid chromatography (HPLC) was established for the quantitative analysis of its main components with Agilent C<sub>18</sub> reversed-phase chromatographic column (4.6 mm×150 mm, 5 µm), the detection wavelength was set at 235 nm, the flow rate was 0.8 mL·min<sup>-1</sup>, and the injection volume was 5 µL. Mobile phase was 0.05% phosphoric acid (A)-acetonitrile (B) for gradient elution (0-1 min, 14%-19%B; 1-4 min, 19%B; 4-18 min, 19%-50%B). The content changes of main components in the residue of Shaoyao Gancaotang were compared before and after two different techniques of organic solvent extraction and enzymatic extraction. Result:A total of 16 chemical components in the residue of Shaoyao Gancaotang were qualitatively analyzed, and quantitative analysis found that there were many chemical components in the residue, among which the residues of 6 index components such as paeoniflorin and liquiritin reached more than 70% in the original decoction piece. After enzymolysis by cellulase, liquiritin in the residue could be converted into liquiritigenin. The content of crude polysaccharide in enzymatic extract of the residue was 6 times higher than that in the blank group, and the content was up to 12%. Conclusion:There are still many small molecule resource components in the residue of Shaoyao Gancaotang, which has great development potential. Organic solvents can be used to re-extract the target components in the residue, and liquiritin can be converted into liquiritigenin by biological fermentation technology, and the crude polysaccharide from the residue can be extracted by enzymatic method to develop animal feed. This study can provide reference basis and approach for reusing the residues of Shaoyao Gancaotang preparations and dispensing granules, so as to realize the high-value utilization of Shaoyao Gancaotang.

13.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 7-16, 2021.
Article in Chinese | WPRIM | ID: wpr-905058

ABSTRACT

Based on the ancient Chinese medical literature and modern clinical application literature, Mahuangtang was systematically analyzed, including its origin, composition, processing requirements and others, in order to provide support for the development of this famous classical formula. It was found that there were some doubts about Mahuangtang, such as the original variety, the processing of decoction pieces, and the dose conversion ratio. On the basis of fully considering the actual needs of the development of famous classical formula preparations and the usage habits of modern clinical practice, the development suggestions of the author were as follows:Ephedrae Herba should be selected Ephedra sinica without removing knots, Cinnamomi Ramulus should be selected from Cinnamomum cassia, Glycyrrhizae Radix et Rhizoma should select Glycyrrhiza uralensis and be roasted with honey, and Armeniacae Semen Amarum should be selected as Dan-processed products. The total dose of Mahuangtang was 24 g after conversion according to 1 Liang equal to 3 g as following the transition phenomenon and law. The preparation and usage method was as follows:took 1.8 L of water, first added Ephedrae Herba in water for decocting, evaporated 400 mL of water, removed the upper foam, then added the other three drugs, cooked over gentle heat to 500 mL, filtered the residue, took three times a day, about 160 mL warm decoction once. The major function recorded of Mahuangtang in ancient books was exterior sthenia syndrome of exogenous wind cold, it often used in the clinical treatment of cold, acute bronchitis, bronchial asthma and other diseases through the flexible application of the later doctors.

14.
China Occupational Medicine ; (6): 591-595, 2021.
Article in Chinese | WPRIM | ID: wpr-923094

ABSTRACT

OBJECTIVE: To analyze the current status of silica dust hazard in workplaces of Jiangxi Province. METHODS: The level of silica dust in the air of workplaces, occupational health examination of the dust-exposed workers and diagnosis of occupational disease in 1 557 enterprises in Jiangxi Province were investigated and analyzed. RESULTS: The 1 557 enterprises were included in eight industries, and the main types of enterprises were non-coal mining, ceramic products manufacturing and stone processing industry(a total of 85.16%). There were 4 029 jobs/positions that were involved in exposure to silica dust in these workplaces. Among them, the exposure concentration of time weighted average(C_(TWA)) of total dust and respirable dust exceeded 21.52% and 20.55%, respectively. The posts where the total dust and respirable dust that exceed the standard were found in the quartz sand processing industry, non-ferrous metal smelting industry and stone processing industry, that were the top three among the eight industries(all P<0.01). Among the 828 posts with C_(TWA) of respiratory dust exceeding the standard, the C_(TWA) exceeding rate of mild-, moderate-and high-hazardous jobs were 3.87%(156/4 029), 1.66%(67/4 029) and 15.02%(605/4 029), respectively. Among 23 643 dust-exposed workers, the detection rates of occupational contraindications and suspected silicosis were 2.06% and 1.51%, and the prevalence of silicosis was 1.21%. CONCLUSION: Silica dust hazard in workplaces of quartz sand processing industry, non-ferrous metal smelting industry and stone processing industry are serious in Jiangxi Province. The supervision and management of occupational health should be further strengthened to guarantee the occupational health of workers.

15.
Chinese Journal of Cardiology ; (12): 49-53, 2021.
Article in Chinese | WPRIM | ID: wpr-941233

ABSTRACT

Objective: To explore the impact of transcatheter aortic valve replacement (TAVR) on renal function in patients with severe aortic stenosis. Methods: This is a single-center retrospective study. Consecutive patients with severe aortic valve stenosis and received TAVR in Zhongshan Hospital from December 2014 to December 2019 were included. The patients were divided into four groups according to the estimate glomerular filtration rate (eGFR) measured at one day before TAVR, namely eGFR>90 ml·min-1·1.73m-2 group, 60<eGFR≤90 ml·min-1·1.73m-2 group, 30<eGFR≤60 ml·min-1·1.73m-2 group and eGFR≤30 ml·min-1·1.73m-2 group. The patients were also divided into acute renal function recovery (AKR) group, acute kidney injury (AKI) group and no change in renal function group according to renal function changes at 72 hours after TAVR. AKR was defined as eGFR increased by more than 25% of the baseline value at 72 hours after TAVR, and AKI was defined as eGFR decreased more than 25% of the baseline value at 72 hours after TAVR. The clinical data of each group were compared, and multivariate logistic regression analysis was performed to analyze the determinants responsible for renal function changes after TAVR. Results: A total of 217 patients were enrolled in this study. The age was (76.7±7.4) years and there were 86 females. The Society of Thoracic Surgeons score was (9.5±5.8). The proportions achieved AKR after TAVR were 0, 30.2% (35/116), 58.6% (41/70) and 75.0% (9/12) respectively in eGFR>90 ml·min-1·1.73m-2 group, 60<eGFR≤90 ml·min-1·1.73m-2 group, 30<eGFR≤60 ml·min-1·1.73m-2 group and eGFR≤30 ml·min-1·1.73m-2 group. A total of 3 patients (1.4%) suffered AKI, including 2 patients in 30<eGFR≤60 ml·min-1·1.73m-2 group and 1 patient in 60<eGFR≤90 ml·min-1·1.73m-2 group. The incidence of AKI in eGFR<60 ml·min-1·1.73m-2 group was 2.4% (2/82). Among the 217 patients, AKR occurred in 85(39.2%) patients, 3(1.4%) experienced AKI and renal function remained unchanged in 129 (59.4%) patients post TAVR. Body mass index (BMI), left ventricular end diastolic dimension (LVEDD) and preoperative eGFR were statistically different between the 3 groups (P<0.05). Multivariate logistic regression analysis showed that BMI (OR=5.54, 95%CI 1.04-29.58, P=0.045), preoperative LVEDD (OR=1.22, 95%CI 1.09-1.38, P=0.001) and preoperative eGFR (OR=2.23, 95%CI 2.04-2.55, P=0.004) were associated with non-AKR post TAVR. Conclusions: After TAVR, most patients show no change or improvement of renal function. BMI, preoperative LVEDD and eGFR are related to renal function change after TAVR.

16.
Chinese Journal of Medical Education Research ; (12): 157-159, 2021.
Article in Chinese | WPRIM | ID: wpr-883570

ABSTRACT

Hunan University of Chinese Medicine has improved the implementation of animal ethics education from the aspects of carrying out elective courses, emphasizing the implementation of pre-class learning, integrating ethics education into experimental teaching, cultivating students' good medical literacy in a subtle way, and further deepening their learning by offering elective courses of animal ethics. The results show that the opening of elective courses and the enforcement of experimental animal ethics education in experimental classes have greatly strengthened the students' experimental animal ethics, which is conducive to the formation of students' medical literacy.

17.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 139-144, 2020.
Article in Chinese | WPRIM | ID: wpr-873099

ABSTRACT

Objective::To improve the quality control system in the production of Jinshuibao capsules, and to provide experimental basis for the follow-up research and application of this preparation. Method::High performance liquid chromatography (HPLC) was employed, the analysis was performed on a Ultimate AQ-C18 column (4.6 mm×150 mm, 5 μm). The chromatographic conditions for the determination of adenosine, guanosine and uridine were as following: mobile phase of methanol-0.1%formic acid aqueous solution for gradient elution, the flow rate of 0.4 mL·min-1, column temperature at 30 ℃, sample quantity of 10 μL, detection wavelength at 260 nm. The chromatographic conditions for the determination of ergosterol were as follows: mobile phase of methanol-water (98∶2), the flow rate of 1 mL·min-1, column temperature at 25 ℃, sample quantity of 10 μL, detection wavelength at 283 nm. Result::The main chromatographic peaks of fermented Cordyceps powder samples in different production stages showed little difference. The linear relationships of adenosine, guanosine and uridine were good (R2 >0.999), their recoveries were 106.06%, 101.25%and 105.88%, respectively. The contents of adenosine and ergosterol in 20 batches of samples extracted from 2016 to 2018 were in line with the requirements in the 2015 edition of Chinese Pharmacopoeia, the contents of guanosine and uridine were 0.97-1.36, 0.67-1.38 mg/capsule, respectively. Conclusion::The quality of Jinshuibao capsules in the market is stable. This method can be used to detect the quality of Jinshuibao capsules, and it is simple, stable and reliable.

18.
China Journal of Chinese Materia Medica ; (24): 5589-5598, 2020.
Article in Chinese | WPRIM | ID: wpr-878818

ABSTRACT

This study aimed to establish the HPLC characteristic chromatogram and content determination method for index components with the primary standard substances of the classical prescription Mahuang Decoction, and to provide data basis for the establishment of its quality standard and the development and utilization of compound preparations. First, HPLC was used to establish the material reference chromatograms of Mahuang Decoction, and 15 batches of standard samples of Mahuang Decoction were determined. Their similarity was calculated by the median method. Secondly, the content of the standard substances was determined and a simplecontent determination method was established by HPLC. Relevant methodology was investigated, and the extraction ratio, index component transfer rate and moisture content of 15 batches of primary standard samples were calculated. The results showed that the two sets of HPLC methods had their own characteristics. The six chromatographic peaks identified from the 10 common peaks in the former characteristic chromatogram covered all the herbal medicines in the standard substances, which can better indicate the quality characteristics of the standard substances of Mahuang Decoction. The latter method(content determination method) was simple and practical, so it was suitable for establishing the quality standard of its compound preparation. Two sets of methods were jointly used to evaluate the quality of 15 batches of Mahuang Decoction. The results were as follows: the similarity of 15 batches of samples was greater than 0.90; the average extraction ratio was 18.1%; the average moisture content was 9.7%; the average content and transfer rate of the standard ingredients ephedrine hydrochloride and total pseudoephedrine hydrochloride were 2.3% and 26.7% respectively, and the average content and transfer rate of amygdalin were 2.2% and 48.3% respectively. None of the data showed dispersion(beyond 70%-130% of the mean value), which met the application data requirements for the substance standards of ancient classical Chinese herbal compound preparations(draft for comments). Based on the above research, the primary substance quality standard of Mahuang Decoction was established in order to provide reference for the development and research of the compound preparation of Mahuang Decoction.


Subject(s)
Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Ephedra sinica , Prescriptions , Quality Control , Reference Standards
19.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 131-139, 2020.
Article in Chinese | WPRIM | ID: wpr-872738

ABSTRACT

Objective:To elucidate the key medicinal substances that cause the difference of efficacy between lotus leaf and lotus plumule, and to analyze their material basis of "homologous and different effect". Method:UPLC-Q-TOF-MS/MS technique was used to identify the main alkaloids in lotus leaf, lotus latex (juice in lotus petiole) and lotus plumule, chromatographic separation was achieved on a Waters XBridge C18 column (4.6 mm×150 mm, 5 μm), and gradient elution was performed with 0.1% ammonia aqueous solution (A)-acetonitrile (B) as mobile phase (0-13 min, 35%-60%B; 13-20 min, 60%-80%B; 20-20.1 min, 80%-95%B; 20.1-25 min, 95%B; 25-25.1min, 95%-35%B; 25.1-40 min, 35%B). Data acquisition was carried out in electrospray ionization (ESI) under the positive ion mode, the scanning range was m/z 100-1 000. Besides, the metabolic network of the main alkaloids was constructed. Result:A total of 5 alkaloids (N-nornuciferine, O-nornuciferine, anonaine, nuciferine and roemerine) were identified from lotus leaf, 6 alkaloids (nuciferine, norisoliensinine, 6-hydroxynorisoliensinine, liensinine, isoliensinine and neferine) in lotus latex, and 8 alkaloids (lotusine, norcoclaurine, N-methylcoclaurine, pronuciferine, armepavine, liensinine, isoliensinine and neferine) in lotus plumule. Also, the biosynthetic pathways of the terminal alkaloids of bisbenzylisoquinoline alkaloids (liensinine, isoliensinine and neferine) and aporphine alkaloids (N-nornuciferine, O-nornuciferine, anonaine, nuciferine and roemerine) was conducted. Conclusion:Five aporphine alkaloids in lotus leaf and three bisbenzylisoquinoline alkaloids in lotus plumule are the material basis for "homologous and different effect" of lotus leaf and lotus plumule. The metabolism of alkaloids in lotus leaf and lotus plumule is derived from the same compound of (S)-N-methylcoclaurine, and two types of alkaloids are synthesized through the action of two different enzymes. The synthetic alkaloids have different structures, resulting in different chemical composition between different tissues, thus producing different efficacy between lotus leaf and lotus plumule.

20.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 44-55, 2020.
Article in Chinese | WPRIM | ID: wpr-872697

ABSTRACT

The prescription research and clinical application of Wenjingtang were summarized in order to provide reference for the formulation of material standard and the development of compound preparation. By systematically sorting out the relevant ancient medical books and modern literature reports, combined with the relevant policy requirements of the development of compound preparations of famous classical formulas, this paper expounded the existing problems and put forward some suggestions. Wenjingtang is composed of nine herbs, which is derived from Complete Effective Prescriptions for Women's Diseases written by CHEN Zi-ming in Song dynasty. The original medicinal plants and medicinal parts of the formula were basically the same as those recorded in the 2020 edition of Chinese Pharmacopoeia, for example, Paeonia lactiflora was the choice of Paeoniae Radix Alba, Cinnamomi Cortex was selected as Guixin, the rhizoma of Curcuma phaeocaulis was selected as Curcumae Rhizoma. It was suggested that raw products should be selected for decoction pieces and processed according to the methods recorded in the 2020 edition of Chinese Pharmacopoeia. According to the dosage of 1 Liang=40 g, the dosages of Angelicae Sinensis Radix, Chuanxiong Rhizoma, Paeoniae Radix Alba, Cinnamomi Cortex, Moutan Cortex and Curcumae Rhizoma were 20 g, the dosages of Ginseng Radix et Rhizoma, Glycyrrhizae Radix et Rhizoma and Achyranthis Bidentatae Radix were 40 g, the total amount of this formula was 240 g. The 9 kinds of decoction pieces were crushed (particle size<6 mm) separately and mixed, each dose was 20 g, 525 mL of water was added, and then decocted to 280 mL. After filtration, warm medicine was taken for once a day. According to ancient books, Wenjingtang has the functions of activating blood circulation, regulating menstruation,warming meridians and dispersing cold. It is mainly used to treat dysmenorrhea, irregular menstruation and other diseases in modern clinical practice. In addition, it has certain curative effect on endometriosis, pelvic inflammatory disease, acne, eczema and other skin diseases. Through the research, the historical evolution and clinical application of Wenjingtang are fully clarified, which can provide research for the later development and application of this famous classical formula.

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