Mechanism and application in tissue engineering of the active ingredient of Drynariae Rhizoma promoting bone defect repair / 中国药房

Bone defect has always been a major clinical challenge because of its great difficulty and long period of treatment. Drynariae Rhizoma is a commonly used medicine in osteology and traumatology of traditional Chinese medicine， and its active ingredients（mainly flavonoids） facilitate osteoblast differentiation of bone marrow mesenchymal stem cells， osteoclast proliferation， vascular-osteogenic coupling， and inhibit osteoclast activity to promote bone mineralization， and repair and reconstruction of bone defect. As a good substitute for bone regeneration drugs， the active constituents of Drynariae Rhizoma can be loaded on scaffold materials of tissue engineering， which greatly improves the bioavailability of the drug. Meanwhile， the sustained-release microspheres also solve some problems such as sudden drug release from the scaffolds， and the composite scaffolds with active ingredient of Drynariae Rhizoma prepared by them have good ossification activity and osteoinduction， with precise bone repair effects， which meet the diverse performance requirements of bone grafts and have a promising clinical application prospect.

Exploration of potential active ingredients and mechanism of action of Xihuang pill-medicated serum against glioma based on HPLC-Q-TOF-MS/MS, network pharmacology and experimental verification / 药学学报

Qualitative analysis of the ingredients absorbed into blood and their metabolites of Xihuang pill (XHP) were conducted using high-performance liquid chromatography quadrupole time-of-flight mass spectrometry (HPLC-Q-TOF-MS/MS) technology. Network pharmacology was used to explore the potential anticancer mechanisms of the ingredients against glioma, and their specific mechanisms were validated through molecular docking and experimental verification. SD rats were intragastrically administered with XHP, and rat serum samples were collected. Ingredients absorbed into blood and their metabolites were identified based on the retention time of chromatographic peaks, accurate molecular mass, characteristic fragment ions, and comparisons with reference substances and literature data. PharmMapper and SwissTarget Prediction databases were used to obtain the targets of the XHP-medicated serum, while GeneCards, OMIM, PharmGKB, TTD, and DrugBank databases were used to obtain glioma disease targets. The "component-target" network relationship diagram was constructed using Cytoscape 3.9.1 software. The protein-protein interaction (PPI) network diagram was constructed using the STRING database, and the targets were analyzed using GO and KEGG analyses. Molecular docking was used to verify the binding ability of core targets with their corresponding compounds in XHP-medicated serum. The potential mechanism of the anti-glioma effect of 11-keto-β-boswellic acid (KBA), a representative component of XHP-medicated serum, was verified using CCK-8 and Western blot assays. A total of 40 compounds were identified in the XHP-medicated serum, including 28 prototype components and 12 metabolites. The network pharmacology results showed that elemonic acid, 3-acetyl-β-boswellic acid, KBA, α-boswellic acid, and other 5 compounds might be the active ingredients of XHP-medicated serum in the treatment of glioma. Glutathione reductase (GSR), glucose-6-phosphate dehydrogenase (G6PD), ATP-citrate lyase (ACLY), aldo-keto reductase family 1 member B1 (AKR1B1) and glutaredoxin (GLRX) were identified as key targets, involving pathways such as glutathione metabolism and the pentose phosphate pathway. Further cell experiments showed that KBA significantly inhibited the proliferation of T98G cells with an IC50 of 30.96 μmol·L-1, and KBA (30 μmol·L-1) significantly downregulated the protein expression levels of GSR in T98G cells. In summary, XHP-medicated serum may exert its anti-glioma effect by regulating GSR and G6PD-targeted pathways involved in glutathione metabolism. These results provide valuable evidence for further investigating the mechanism of XHP in treating glioma. The animal welfare and experimental procedures were approved by the Ethical Committee of Laboratory Animals at Nanjing University of Chinese Medicine (approval No. ACU221001).

Research progress on molecular mechanism of traditional chinese medicine active ingredients interfering bone marrow mesenchymal stem cells senescence / 中国临床药理学与治疗学

The senescence of bone marrow mesenchymal stem cells (BM-MSCs) will induce age-related bone tissue degeneration and chronic inflammation, and reduce its application effect for cell therapy. More and more active ingredients of traditional chinese medicine have been proved to intervene BM - MSCs senescence, playing an important role in bone diseases prevention and treatment, and improving the therapeutic effect of BM-MSCs. In this paper, the latest research progress on the molecular mechanism of traditional chinese medicine active ingredients interfering BM-MSCs senescence was summarized, in order to provide new direction and reference basis for senescence intervention research and clinical application improvement of BM-MSCs.

Avaliação dos repelentes: efeitos na saúde humana / Evaluation of repellents: effects on human health / Evaluación de repelentes: efectos sobre la salud humana

Este artigo teve como objetivo avaliar os efeitos do uso de repelentes na população brasileira. Para alcançar o objetivo proposto, foram utilizadas as metodologias da revisão de literatura e a pesquisa documental junto à ANVISA referentes aos repelentes registrados e comercializados no Brasil. De acordo com a RDC nº 7 de 2015 da ANVISA, os repelentes são classificados como produtos de Grau 2, compostos por Produtos de Higiene Pessoal, Cosméticos e Perfumes. Nessa categoria, constatou-se a existência de 113 produtos registrados para comercialização no Brasil. Verificou-se que, apesar do aumento do consumo devido às doenças causadas por picada dos mosquitos Aedes aegypti, a maioria dos repelentes comercializados possuem como princípio ativo as substâncias DEET, Icaridina ou IR3535, não resultando em reações tóxicas relevantes para a população, visto que, essas substâncias são de baixa toxicidade ou atóxicas, como é o caso do IR3535. Faz-se necessário considerar que o uso desses produtos deve seguir rigorosamente as orientações dos fabricantes disponíveis nos rótulos das embalagens no que tange à aplicação, reaplicação, frequência e uso específico para crianças, gestantes e lactantes. No que se refere à eficácia, a Icaridina apresenta-se como mais eficaz que o IR3535 quando considerados os fatores tempo de proteção versus concentração do princípio ativo. Entretanto, a Icaridina, em alguns casos, pode apresentar moderada toxicidade, enquanto que, o IR3535 é atóxico. Observa-se ainda, que mesmo diante desse cenário, o DEET é o mais comercializado e amplamente estudado no país.

This article aimed to evaluate the effects of the use of repellents in the Brazilian population. To achieve the proposed objective, the methodologies of literature review and documentary research with ANVISA regarding repellents registered and marketed in Brazil were used. According to ANVISA's RDC No. 7 of 2015, repellents are classified as Grade 2 products, composed of Personal Hygiene Products, Cosmetics and Perfumes. In this category, it was found the existence of 113 products registered for commercialization in Brazil. It was found that, despite the increased consumption due to diseases caused by bites from Aedes aegypti mosquitoes, most repellents marketed have as active ingredients the substances DEET, Icaridin or IR3535, not resulting in toxic reactions relevant to the population, since these substances are of low toxicity or non- toxic, as is the case of IR3535. It is necessary to consider that the use of these products should strictly follow the manufacturers' guidelines available on the packaging labels regarding application, reapplication, frequency and specific use for children, pregnant and lactating women. With regard to efficacy, Icaridin is more effective than IR3535 when considering the factors protection time versus concentration of the active ingredient. However, Icaridin, in some cases, may present moderate toxicity, while IR3535 is non- toxic. It is also observed that, even in this scenario, DEET is the most marketed and widely studied in the country.

artículo tuvo como objetivo evaluar los efectos del uso de repelentes en la población brasileña. Para alcanzar el objetivo propuesto, se utilizaron las metodologías de revisión bibliográfica e investigación documental con ANVISA sobre repelentes registrados y comercializados en Brasil. De acuerdo con el CDR nº 7 de 2015 de ANVISA, los repelentes se clasifican como productos de Grado 2, compuesto por Productos de Higiene Personal, Cosméticos y Perfumes. En esta categoría, se constató la existencia de 113 productos registrados para comercialización en Brasil. Se constató que, a pesar del aumento del consumo debido a las enfermedades causadas por picaduras de mosquitos Aedes aegypti, la mayoría de los repelentes comercializados tienen como principios activos las sustancias DEET, Icaridina o IR3535, no resultando en reacciones tóxicas relevantes para la población, ya que estas sustancias son de baja toxicidad o no tóxicas, como es el caso del IR3535. Es necesario considerar que el uso de estos productos debe seguir estrictamente las directrices de los fabricantes disponibles en las etiquetas de los envases en cuanto a aplicación, reaplicación, frecuencia y uso específico para niños, mujeres embarazadas y lactantes. En cuanto a la eficacia, la Icaridina es más eficaz que el IR3535 si se consideran los factores tiempo de protección frente a concentración del principio activo. Sin embargo, la Icaridina, en algunos casos, puede presentar una toxicidad moderada, mientras que el IR3535 no es tóxico. También se observa que, incluso en este escenario, el DEET es el más comercializado y ampliamente estudiado en el país.

Screening of anti-SARS-CoV-2 ligands from Chinese herbs based on a dual-target surface plasmon resonance biosensor / 药学学报

The epidemic of COVID-19 has brought great challenges to the global public health prevention and control system combined with clinical diagnosis and treatment system, and it makes the development of effective antiviral drugs an important task in current pharmaceutical research. Traditional Chinese medicine (TCM) has played an important role in the prevention and control of COVID-19. Due to its numerous chemical components and various structural types, TCM becomes a natural library for searching for lead compounds against SARS-CoV-2. In this study, a novel dual-target surface plasmon resonance (SPR) biosensor was developed for S protein receptor binding domain (SRBD) and angiotensin converting enzyme 2 (ACE2) which are two key proteins in the process of SARS-CoV-2 invading cells according to characteristics of synergistic effects of multiple components and comprehensive regulation of multiple targets of TCM. The SPR biosensor was applied to screen and identify active components from six TCMs, and daidzin from Puerariae Lobatae Radix was identified to bind with SRBD and ACE2. The affinity constant (KD) of daidzin and ACE2 was 5.18 μmol·L-1 through the SPR affinity assay. Competitive ELISA assay showed that daidzin could inhibit the binding of SRBD and ACE2, and the inhibition rate of daidzin (20 μmol·L-1) was 38.6%. Molecular docking experiments further confirmed that daidzin had the best binding near the binding region of SRBD-ACE2 complex. This study shows that the dual-target SPR screening system is accurate and efficient, and is particularly suitable for screening of complex drug systems and effective substances study of TCM. It provides a material basis for exploring the mechanism of TCM active constituents against SARS-CoV-2, and provides a source of lead compounds for the development of anti-SARS-CoV-2 drugs.

Identification of constituents in vitro and blood-absorbed ingredients of protective effect on acute liver injury from Yin Chen Hao decoction based on UPLC-QTOF/MS / 药学学报

To identify the active constituents in vitro and blood-absorbed ingredients in vivo from Yin Chen Hao decoction provides scientific evidence for probing its prevention and treatment mechanism on acute liver injury. An ultrahigh performance liquid chromatography quadrupole-time of flight-mass spectrometry (UPLC-QTOF/MS) method was applied for analysis of Yin Chen Hao decoction and the serum samples of mice with con-A induced acute liver injury after preventive oral administration for 14 days (the use of all laboratory animals in this study was approved by the Ethics Committee of the Naval Medical University, 19YF1459400). A total of 90 chemical constituents were identified from Yin Chen Hao decoction, mainly were flavonoids, terpenoids, tannins, quinones. 5 prototype compounds were identified in the serum, including chrysophanol, deoxyrhapontin-8-O-gallate, mussaenosidic acid, herniarin, emodin. The established UPLC-QTOF/MS method could efficiently and sensitively identify the constituents in vitro and blood-absorbed ingredients of Yin Chen Hao decoction, primarily clarify the material basis of its hepatoprotective effect, and provided a scientific basis for the quality marker selection and the pharmacodynamic material basis research on the decoction.

Simultaneous determination of 8 components in Jinqi jiangtang tablets by ion mobility mass spectrometry method / 中国药房

OBJECTIVE To establish the ion mobility mass spectrometry method for simultaneous determination of epiberberine， berberine， coptisine， palmatine， calycosin-7-glucoside， 3，5-O-dicaffeoylquinic acid， 4，5-O-dicaffeoylquinic acid and chlorogenic acid in Jinqi jiangtang tablets. METHODS Ion mobility mass spectrometry method was used. The determination was performed on Waters ACQUITY UPLC HSS T3 （2.1 mm×50 mm， 1.8 μm） with mobile phase consisted of 0.1% formic acid solution-acetonitrile （gradient elution） at the flow rate of 0.3 mL/min. The column temperature was 40 ℃， and the injection volume was 5 μL. The contents of 8 components in Jinqi jiangtang tablets were determined by scanning detection under positive and negative ion modes with an electric spray ion source， and setting ion mobility mass parameters according to the peak response of each component. RESULTS The results showed that the linear relationship of the eight components was good within their respective ranges （r≥0.999）； RSDs of precision， repeatability and stability （24 h） tests were not more than 4.0%； average recoveries were 94.6%-101.2% ， RSDs were 2.6%-3.9% （n＝9）. The contents of the above eight components in three batches of Jinqi jiangtang tablets were 3.060-3.545， 24.50-26.74， 2.795-4.149， 1.437-2.501， 0.204-0.242， 0.950-1.281， 2.272-2.828， 7.314- 7.960 mg/g， respectively. CONCLUSIONS The established method has high sensitivity and good reproducibility， and can provide reference for the quality control of the preparation.

Research progress in pathogenesis and traditional Chinese medicines treatment of ischemic stroke-related headache / 中国中药杂志

Headache is a common clinical complication of ischemic stroke. As a precursor of stroke, headache occurs repeatedly in the convalescent period of ischemic stroke, leading to secondary stroke and seriously hindering patients' rehabilitation. Currently, it is believed that the pathogenesis of ischemic stroke-related headache is associated with the abnormal release of vasoactive substances, high platelet aggregation, and stimulation of intracranial pain-sensitive structures. The active ingredients in traditional Chinese medicines(TCM) with the effects of activating blood to resolve stasis and clearing heat to release exterior can protect brain tissue and relieve headache by reducing the release of inflammatory cytokines, alleviating antioxidant stress, inhibiting neuronal apoptosis and so on. This paper introduces the research progress in the potential mechanism and TCM treatment of ischemic stroke-related headache, aiming to provide reference for further research and drug development of this complication.

Exploration in the medication law and core TCM prescriptions of Jia Yuejin in the treatment of coronary heart disease complicated with depression based on the "target-component-Chinese materia medica" and clinical data / 国际中医中药杂志

Objective:To explore the medication law and core TCM prescriptions of Jia Yuejin in the treatment of coronary heart disease (CHD) complicated with depressive disorder (DD) by analyzing target-based network and mining clinical data.Methods:The targets of CHD complicated with DD were obtained by GeneCards, OMIM, TTD and other databases, and then the protein-protein interaction network of the two disease targets was constructed and then screened out the core targets. The Metascape platform was used to perform GO and KEGG pathway enrichment analysis on the intersection targets respectively to analyze the mechanism of action of CHD complicated with DD. Then TCMSP was used to query the active components acting on the targets and the Chinese materia medica containing these active components, and the data were imported into Cytoscape 3.9.0 to construct the core target-active component-Chinese materia medica network for network topology analysis. The outpatient clinical data of Jia Yuejin from January 1, 2015 to January 1, 2021 were collected, and data mining was conducted by using the Ancient and Modern Medical Case Cloud Platform (V2.3.5) to obtain his commonly used prescriptions. The results were fitted with the core TCM prescriptions obtained by target network analysis, and the drugs in the core prescriptions were analyzed.Results:Totally 1 501 intersection targets were obtained by protein interaction network analysis of CHD complicated with DD, which could be divided into 4 core target clusters, including inflammation cause, subclass tumor cause, subclass lipid metabolism factor, and fibrosis factor; a total of 480 active components were obtained by TCMSP, which belonged to 181 types of Chinese materia medica, including 8 core components: quercetin, kaempferol, luteolin, carotene, beta-carotene, acacetin, formononetin and ellagic acid. GO enrichment analysis yielded 61 results, mainly including positive regulation of protein phosphorylation, signal receptor agonist activity, side of membrane , etc.; KEGG pathway enrichment analysis yielded a total of 20 results, mainly including cancer pathways, lipid and atherosclerosis, JAK-STAT signaling pathway, etc. Clinical data mining included 120 cases and 148 prescriptions, including 135 types of Chinese materia medica; the properties were mainly mild, warm, slightly cold and cold; the tastes were mainly sweet, bitter and light, and the medicine mainly belongs to the lung, spleen, liver, heart, stomach, kidney and other meridians; drug association analysis, cluster analysis and complex network analysis were used to synthesize common prescriptions. The core TCM prescriptions obtained from common prescription and target network analysis were fitted: Pinelliae Rhizoma, Glycyrrhizae Radixet Rhizoma, Bupleuri Radix, Cyperi Rhizoma, Salviea Miltiorrhizae Radix et Rhizoma, Corydalis Rhizoma, Codonopsis Radix, Astragali Radix, Acori Tatarinowii Rhizoma. Conclusion:The medication law of Jia Yuejin in the treatment of CHD complicated with DD is in accordance with core TCM prescriptions. This study can provide guidance for clinical treatment and further research of CHD complicated with DD.

Qishen Yiqi Dripping Pills for Cardiovascular Diseases: Effects and Mechanisms / 中国结合医学杂志

Qishen Yiqi Dripping Pills (QSYQ) is a compound of Chinese medicine, which has been used to treat coronary heart disease and cardiac dysfunction. Its natural components include astragaloside IV, flavonoids, danshensu, protocatechualdehyde, salvianolic acid B, salvianolic acid A, ginsenosides Rg1, ginsenosides Rb1, and essential oils, etc. It exerts effects of nourishing qi and promoting blood circulation to relieve pain. In this review, the bioactive components of QSYQ and its effects for treating cardiovascular diseases and possible mechanism were summarized, providing references for further study and clinical application of QSYQ.

Research progress on Astragalus active ingredient in treatment of hepatic fibrosis based on cell signaling pathway / 中国药理学通报

Hepatic fibrosis is present in most chronic liver disease processes, and there are no ideal anti-fibrotic drugs available. Astragalus has a long history of medicinal use, and its anti-fibrotic effects have been confirmed by modern studies. In this study we have searched the literature to identify the signaling pathways and mechanisms of action of Astragalus and its active ingredients on hepatic fibrosis in recent years, so as to provide the basis and ideas for the development of anti-fibrotic drugs and mechanisms of Astragalus. It is showed that the active ingredients of Astragalus act through regulating p38MAPK, TGF-pl/Smads,NF-

Therapeutic potential and mechanism of Chinese herbal medicines in treating fibrotic liver disease / 中国天然药物

Liver fibrosis is a pathological condition characterized by replacement of normal liver tissue with scar tissue, and also the leading cause of liver-related death worldwide. During the treatment of liver fibrosis, in addition to antiviral therapy or removal of inducers, there remains a lack of specific and effective treatment strategies. For thousands of years, Chinese herbal medicines (CHMs) have been widely used to treat liver fibrosis in clinical setting. CHMs are effective for liver fibrosis, though its mechanisms of action are unclear. In recent years, many studies have attempted to determine the possible mechanisms of action of CHMs in treating liver fibrosis. There have been substantial improvements in the experimental investigation of CHMs which have greatly promoted the understanding of anti-liver fibrosis mechanisms. In this review, the role of CHMs in the treatment of liver fibrosis is described, based on studies over the past decade, which has addressed the various mechanisms and signaling pathways that mediate therapeutic efficacy. Among them, inhibition of stellate cell activation is identified as the most common mechanism. This article provides insights into the research direction of CHMs, in order to expand its clinical application range and improve its effectiveness.

Screening of active ingredients for estrogenic effect of total flavonoids from Cuscutae Semen / 中国药房

OBJECTIVE To screen the active ingredient with estrogenic effect from total flavonoids of Cuscutae Semen. METHODS The estrogenic effect of total flavonoids from 10 batches of Cuscutae Semen was evaluated with mouse uterus coefficient and endometrial thickness as evaluation indexes， establish its fingerprint and calibrate the common peak. Common peak and spectrum-effect relationship of the above two indicators were analyzed by bivariate relationship analysis and grey correlation analysis to screen active components with estrogenic effect. UPLC-Q-TOF-MS technology was used to characterize the active components. RESULTS The estrogenic effect of total flavonoids from 10 batches of Cuscutae Semen was good. Twenty-eight and thirty-three common peaks of total flavonoids in Cuscutae Semen were obtained in the positive and negative ion modes respectively. The constituents represented by peaks 7，10，12-16，26 in positive ion mode and peaks 2，5，8，9，12，16，19，22-26 in negative ion mode were highly correlated with the estrogenic effect of total flavonoids from Cuscutae Semen. Further identification showed that the active substances with estrogenic effect from the total flavonoids of Cuscutae Semen were 5，7，3′， 4′-tetramethoxyflavone， 6- O-（trans） p-coumarin-furanfructose-（2→1）-glucopyranoside， rutin， kaempferol-3，7-diglucoside， apigenin-7-O-glucoside， hyperoside， baicalin， quercitin， quercetin， apigenin， kaempferol， isorhamnetin， rhododendron， isoquercetin， kaempferol-3-furan arabinoside， 2，6-octadecanediacetylic acid. CONCLUSIONS A total of 16 chemical components with estrogenic effect are screened from total flavonoids of Cuscutae Semen in the study， which can provide reference for the development of phytoestrogens.

Network pharmacology-based mechanism of Sijunzi Decoction in treatment of colorectal cancer / 国际中医中药杂志

Objective:To explore the potential target and signaling pathway of Sijunzi Decoction in treating Colorectal Cancer (CRC) with network pharmacology.Methods:The Traditional Chinese Medicine System Platform (TCMSP) and Swiss Target Prediction database were adopted to establish the database of Sijunzi Decoction effective ingredients and targets. Therapeutic Target Database (TTD), Online Mendelian Inheritance in Man, Drugbank and GeneCards were used to build the CRC target database. The common gene names of target proteins were checked in Uniprot database. The STRING database was applied to analyze the interactions between the targets and the DAVID was used for the enrichment analysis on gene ontology (GO) biological process and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway. The network topology results were analyzed by Cytoscape 3.7.1 software.Results:134 active compounds of Sijunzi Decoction were gained, and PPI includes 125 targets protein (TP53,AKT1,IL-6,et al.). The 516 cellular biological processes, 53 cellular component and 98 molecular function were obtained through GO biological process enrichment analysis. The result of KEGG pathway enrichment showed that PI3K-Akt signaling pathway, TNF signaling pathway and FoxO signaling pathway were the main pathways.Conclusion:Sijunzi Decoction is mainly used to treat CRC by regulating key proteins such as TP53,AKT1, IL-6 and interfering with signal pathways such as PI3K-Akt, TNF and FoxO, reflecting the characteristics of Sijunzi Decoction in the treatment of CRC with multi-component,multi-target and multi-pathway characters.

Comprehensive evaluation system for quality of Chinese medicinal decoction pieces based on "experience-ingredients-activity-electronic sensing" / 中国中药杂志

Quality evaluation of Chinese medicinal decoction pieces is vital for the development of the downstream industries, and is an important channel for implementing the strategy of "higher quality, higher price, and priority for the high quality" for traditional Chinese medicine. At the moment, the quality of Chinese medicinal decoction pieces is mainly evaluated based on chemical component examination. Considering the weak preliminary research foundation and poor research conditions, traditional experience-based evaluation is undervalued in the quality rating of Chinese medicinal decoction pieces. However, traditional experience is a summary of the quality of Chinese medicinal materials based on clinical experience, which thus can be a potential basis for the quality evaluation of the decoction pieces. It is a challenge in the evaluation of Chinese medicinal decoction pieces to objectify the traditional experience-based evaluation from multiple aspects such as chemistry, effect, and characterization via modern techniques. Therefore, this study developed the "experience-ingredients-activity-electronic sensing" evaluation system for Chinese medicinal decoction pieces on the basis of experience-based assessment, chemical ingredients that can truly reflect the traditional experience, biological effect assessment, and electronic sensory evaluation, which is expected to quantify the traditional experience of quality evaluation of Chinese medicinal decoction pieces via chemistry, biology, and sensory simulation. The evaluation system can serve as a reference for clinical experience-based quality evaluation of Chinese medicinal decoction pieces.

Hypoglycemic mechanism of Psoraleae Fructus and its main chemical constituents / 中国中药杂志

With the rise of incidence, fatality rate, and number of young cases, diabetes mellitus has been one of the seven major diseases threatening human health. Although many antidiabetic drugs(oral or for injection) are available, the majority have serious side effects during the long-term use. Thus, it is of particularly vital to develop new drugs with low risk and definite effect. Psoraleae Fructus, a traditional medicinal widely used in the folk, has hypoglycemic, anti-osteoporosis, antitumor, estrogen-like, and anti-inflammatory effects. Thus, it has great clinical application potential. Chinese medicine and the active ingredients, characterized by multiple targets, multiple pathways, and multiple effects in the treatment of diabetes mellitus, have distinct advantages in clinical application. However, the safety of Chinese medicine remains to be a challenge, and one of keys is to clarifying the mechanism of a single Chinese medicinal and its active ingredients. With the method of literature research, this study summarized and analyzed the hypoglycemic mechanisms of Psoraleae Fructus and its main active ingredients over the last decade: regulating glucose metabolism, improving insulin resistance, and directly acting on pancreatic β-cells. The result is expected to serve as a reference for further research on the effects of Psoraleae Fructus and its main chemical constituents in lowering blood glucose and preventing diabetes mellitus and the clinical application.

Investigation of the API distribution homogeneity in lyophilized product-pemetrexed disodium for injection by confocal micro-Raman spectroscopy mapping / 药学学报

The method of homogeneity evaluation for active pharmaceutical ingredient (API) spatial distribution in lyophilized product was investigated for the first time with confocal micro-Raman spectroscopy mapping, using pemetrexed disodium for injection as a model drug. Certain areas of the lyophilized product were scanned to obtain Raman spectra. The classical method ("peak clipping" method) was employed for mapping with characteristic Raman peaks of the API and the excipient. Due to the API being finely dispersed in the excipient in lyophilized products, the classical method cannot discriminate between the two ingredients making the distribution homogeneity difficult to evaluate. The "ratio of characteristic peak intensities" method was then utilized. Using this method, the relative intensity of the characteristic Raman peaks of the API to the excipient was applied for mapping and the relative content of API to excipient was calculated for a homogeneity evaluation of the drug distribution. The validation of this method showed a good linear relationship between the relative intensity and the relative content of API to excipient (r2 > 0.99), and the precision and recovery were adequate for homogeneity evaluation of API by Raman spectroscopy mapping. Five products of pemetrexed disodium for injection from different manufacturers were tested through Raman maps applying this method and the histograms of relative Raman intensity were also plotted by frequency to help the homogeneity evaluation of drug distribution. The results showed that there were obvious differences in the drug distribution homogeneity from different products, where a more homogeneous API distribution was found in the brand product. This research provides a reliable method for the homogeneity evaluation of API distribution, which facilitates quality evaluation and process optimization of lyophilized products.

Progress in the prevention and treatment of age-related macular degeneration with active ingredients of traditional Chinese medicine / 药学学报

Age-related macular degeneration (AMD) is one of the main causes of vision loss among middle-aged and elderly people worldwide. The prevention and treatment of AMD is a current topic of interest in ophthalmology but remains challenging. Oxidative stress-induced retinal pigment epithelial cell autophagic dysfunction, cellular senescence, and an abnormal immune inflammatory response are key pathogenic factors for AMD. Many bioactive ingredients of traditional Chinese medicine not only exert anti-oxidative, anti-inflammatory, anti-aging, and anti-apoptotic effects, but also prevent/block the occurrence of AMD through different pathways. This review summarizes our current understanding of the pathogenesis of AMD, the types of natural bioactive ingredients capable of treating AMD, as well as the known mechanisms by which these agents act, and may provide new strategies for the prevention and treatment of AMD.

Impact of different storage conditions on nutrient composition of human milk at different stages / 上海预防医学

Objective To investigate the changes of nutrients in colostrum， transitional milk， mature milk and late milk after storage at indoor temperature for 3 h， at 4 ℃ for 24 h， at -18 ℃ for 30 d， and at -18 ℃ for 90 d， so as to select the most suitable storage method of milk. Methods Fifteen pregnant women registered in the Shanghai Hongkou Liangcheng Village Street Community Health Service Center， who were expected to give birth from January to June in 2019， were selected. The breast milk of each woman was followed from delivery to 10 months after breast-feeding. Colostrum， transitional milk， mature milk and late milk were sampled， and each sample was divided into 5 parts. Changes in protein， fat， lactose， minerals， carbohydrates， vitamins and bacterial colony number of breast milk were detected according to 0 h（16-18 ℃）， 3 h （16-18 ℃）， 24 h （4 ℃） to 37 ℃， 30 d （-18 ℃） to 37 ℃ after thawing at 40 ℃ and 90 d （-18 ℃） to 37 ℃ after thawing at 40 ℃. Results The results showed that the nutritional components of milk in different stages decreased with time. However， there was no significant difference in the decline of nutritional components in different stages of milk after the same duration of time （ P >0.05）. Conclusion The milk at each stage can be stored， and the lactating mother can store the excess milk at any stage as she wishes.

Impact of different storage conditions on nutrient composition of human milk at different stages / 上海预防医学

Objective To investigate the changes of nutrients in colostrum， transitional milk， mature milk and late milk after storage at indoor temperature for 3 h， at 4 ℃ for 24 h， at -18 ℃ for 30 d， and at -18 ℃ for 90 d， so as to select the most suitable storage method of milk. Methods Fifteen pregnant women registered in the Shanghai Hongkou Liangcheng Village Street Community Health Service Center， who were expected to give birth from January to June in 2019， were selected. The breast milk of each woman was followed from delivery to 10 months after breast-feeding. Colostrum， transitional milk， mature milk and late milk were sampled， and each sample was divided into 5 parts. Changes in protein， fat， lactose， minerals， carbohydrates， vitamins and bacterial colony number of breast milk were detected according to 0 h（16-18 ℃）， 3 h （16-18 ℃）， 24 h （4 ℃） to 37 ℃， 30 d （-18 ℃） to 37 ℃ after thawing at 40 ℃ and 90 d （-18 ℃） to 37 ℃ after thawing at 40 ℃. Results The results showed that the nutritional components of milk in different stages decreased with time. However， there was no significant difference in the decline of nutritional components in different stages of milk after the same duration of time （ P >0.05）. Conclusion The milk at each stage can be stored， and the lactating mother can store the excess milk at any stage as she wishes.