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1.
Article in Chinese | WPRIM | ID: wpr-940633

ABSTRACT

ObjectiveTo optimize the extraction and purification process of Gardeniae Fructus for industrial production, and to obtain the total iridoid and total crocin extracts. MethodOrthogonal test was used to optimize the water extraction process by taking contents of geniposide, genipin gentiobioside, gardenoside, crocin-1 and crocin-2 as indicators and the decocting time, decocting times and water amount as factors. The purification process was optimized by single factor test, and four different types of macroporous adsorption resins were screened. The process conditions such as resin type, maximum loading amount, water washing amount, ethanol concentration, ethanol dosage, and flow rate of sample loading were mainly investigated. In addition, the drying methods (vacuum drying and spray drying) of the extract were investigated, and a pilot scale-up verification test was carried out. ResultThe optimal water extraction process of Gardeniae Fructus was to add 15, 10 times the amount of water for decocting twice, 1 h each time. The optimal purification process was as follows:the water extract through SP825L macroporous resin column, the amount of crude drug-the amount of resin (1∶1.5), the sample loading flow rate of 3 BV h-1, adding 2 BV of water to remove impurities, adding 4 BV of 30% ethanol to obtain the iridoid part, then adding 3 BV of 70% ethanol to obtain the crocin part, collecting the ethanol lotion, and drying at 70 ℃. Under these conditions, the extraction amount of total iridoids was 590.75 mg·g-1 with the transfer rate of 70.48%, and the yield of dry extract was 8.89%. The extraction amount of total crocins was 83.37 mg·g-1 with the transfer rate of 22.20%, and the dry extract yield was 2.60%. ConclusionThe optimized extraction and purification process is stable and feasible with high extraction rate of active components, which is suitable for the industrial extraction and purification of active parts of Gardeniae Fructus.

2.
Article in Chinese | WPRIM | ID: wpr-906161

ABSTRACT

Zexietang is derived from Jingui Yaolue (《金匮要略》), which is composed of Alismatis Rhizoma and Atractylodis Macrocephalae Rhizoma, and has the effect of inducing diuresis and invigorating the spleen to produce water. Compared with western medicine in the treatment of related diseases, Zexietang can not only improve the curative effect, but also reduce the occurrence of adverse reactions, so as to achieve long-term stable administration. The authors sorted out and analyzed the chemical composition, pharmacological effect and clinical application of Zexietang in recent years. It was found that the main active components of Zexietang were alismol A and B, 23-acetyl-alismol B and C, atractylenolides (atractylenolide Ⅰ, Ⅱ, Ⅲ) and polysaccharides. Pharmacological experiments showed that they had diuretic, hypolipidemic, anti-inflammatory and others. And it can be used in the treatment of hypertension, hyperlipidemia, vertigo, cerebral vascular insufficiency and other diseases combined with other Chinese materia medica, and the curative effect is obvious. By summarizing the research status of Zexietang in recent years, its active components and pharmacological mechanism can be further clarified, which provides the basis for the clinical application of Zexietang and guides the direction of its further research.

3.
Article in Chinese | WPRIM | ID: wpr-906069

ABSTRACT

The small size, moderate drug loading, and targeting properties of nano-preparations make them can be excellent delivery tools for drugs, genes or proteins crossing the cell or blood-brain barrier (BBB). Currently, facilitating drug crossing BBB with innovative nano-drug delivery systems is considered as a strategic approach for the prevention, diagnosis and treatment of central nervous system (CNS) diseases. However, with the deepening of the research, the adverse reactions and toxicity of nanocarriers have gradually attracted the attention of researchers. Based on this, this paper summarized the situation of BBB-penetrating targeted nano-preparations at home and abroad in recent years from the perspective of classification of types and properties of nanocarriers, and analyzed the advantages and disadvantages of each carrier. The results showed that nano-preparations with active ingredients of traditional Chinese medicine (TCM) as carriers have become a promising way of cancer treatment, but the complexity and diversity of TCM components limited its application to a certain extent. Further studies should be strengthened to lay a foundation for the application and development of TCM nano-preparations in the field of CNS diseases.

4.
Acta Pharmaceutica Sinica ; (12): 2164-2168, 2021.
Article in Chinese | WPRIM | ID: wpr-887057

ABSTRACT

Patients with hypoxia pulmonary hypertension (HPH) are often accompanied by dyspnea, fatigue, and headache. With the development of the disease, the right ventricle gradually collapses and eventually leads to death. Hypoxic pulmonary vascular remodeling is an important pathological basis of HPH, and the remodeled pulmonary vessels will form permanent thickening. The mechanism of hypoxic pulmonary vascular remodeling is relatively complex. At present, there are few studies on drugs for pulmonary vascular remodeling on the market, mainly focusing on the alleviation of pulmonary vasoconstriction. It was found that hypoxia induces calcium overload in pulmonary artery smooth muscle cells (PASMCs), resulting in the proliferation of PASMCs. The main mechanisms include: ① abnormal expression of calcium pumps; ② abnormal calcium channels in the plasma membrane of pulmonary artery smooth muscle cells; ③ overexpression of calcium-sensitive receptors in cells; ④ the expression of Na+/Ca2+ exchanger type-1 was abnormal. This review summarized several mechanisms of hypoxia induced calcium overload leading to pulmonary artery remodeling, hoping to provide a new idea for the treatment of HPH.

5.
Article in Chinese | WPRIM | ID: wpr-879151

ABSTRACT

The paclitaxel-loaded and folic acid-modified poly(lactic-co-glycolic acid) nano-micelles(PTX@FA-PLGA-NMs) were prepared by the emulsion solvent evaporation method, and the parameters of paclitaxel-loaded nano-micelles were optimized with the particle size and PDI as evaluation indexes. The morphology of the nano-micelles was observed by transmission electron microscopy(TEM), and the stability, drug loading and encapsulation efficiency were systematically investigated. In vitro experiments were performed to study the cytotoxic effects of nano-micelles, apoptosis, and cellular uptake. Under the optimal parameters, the nano-micelles showed the particle size of(125.3±1.2) nm, the PDI of 0.086±0.026, the zeta potential of(-20.0±3.8) mV, the drug loading of 7.2%±0.75%, and the encapsulation efficiency of 50.7%±1.0%. The nano-micelles were in regular spherical shape as observed by TEM. The blank FA-PLGA-NMs exhibited almost no inhibitory effect on the proliferation and growth of tumor cells, while the drug-loaded nano-micelles and free PTX exhibited significant inhibitory effects. The IC_(50) of PTX@FA-PLGA-NMs and PTX was 0.56 μg·mL~(-1) and 0.66 μg·mL~(-1), respectively. The paclitaxel-loaded nano-micelles were potent in inhibiting cell migration as assessed by the scratch assay. PTX@FA-PLGA-NMs had good pro-apoptotic effect on cervical cancer HeLa cells and significantly promoted the uptake of HeLa cells. The results of in vitro experiments suggested that PTX@FA-PLGA-NMs could target and treat cervical cancer HeLa cells. Therefore, as nanodrug carriers, PTX@FA-PLGA-NMs with anti-cancer activity are a promising nano-system for improving the-rapeutic effects on tumors.


Subject(s)
Antineoplastic Agents, Phytogenic/pharmacology , Cell Line, Tumor , Drug Carriers , Female , Folic Acid , Glycolates , HeLa Cells , Humans , Micelles , Paclitaxel , Particle Size , Uterine Cervical Neoplasms/drug therapy
6.
Article in Chinese | WPRIM | ID: wpr-872957

ABSTRACT

Objective::To investigate the pharmacodynamics of volatile oil in couplet medicines of Moslae Herba and Pogostemonis Herba, to establish a method for simultaneous determination of three essential ingredients (thymol, carvacrol and patchouli alcohol) in volatile oil of the couplet medicines by gas chromatography (GC), to optimize the preparation process of β-cyclodextrin (β-CD) inclusion complex of volatile oil in the couplet medicines and to confirm the formation of the inclusion complex. Method::An in vitro inflammatory response model was established by hyaluronidase activity inhibition test in order to detect the anti-inflammatory activity of the volatile oil. Also, the antioxidant activity of the volatile oil was assessed by 1, 1-diphenyl-2-trinitrophenylhydrazine (DPPH) free radical scavenging method. The inclusion of volatile oil in couplet medicines of Moslae Herba and Pogostemonis Herba was prepared by scaturated aqueous solution method, colloid milling method and grinding method, respectively. GC was used to determine the contents of thymol, carvacrol and patchouli alcohol in volatile oil for optimizing extraction and inclusion processes of volatile oil. Scanning electron microscope, infrared spectroscopy, thermal differential analysis, and X-ray diffraction (XRD) were used to verify the formation of the inclusion complex. Result::The volatile oil not only inhibited hyaluronidase activity to a certain extent, but also eliminated DPPH and increased with the increase of concentration. There was a good linear relationship between the peak area and concentration of thymol, carvacrol and patchouli alcohol at 0.021 3-0.426, 0.020 04-0.400 8, 0.022 6-0.452 g·L-1 (R2>0.999), respectively. Their recoveries were 99.59%(RSD 1.6%), 100.15%(RSD 1.5%), 100.70%(RSD 1.4%), respectively. The colloid milling method was optimized, and the formation of the inclusion complex was verified by the aforementioned methods. Conclusion::The volatile oil in couplet medicines of Moslae Herba and Pogostemonis Herba has certain anti-inflammatory activity and anti-oxidation ability. The colloid milling method was the best inclusion process for the volatile oil. The established GC has the advantages of simple, sensitive, accurate, reliable and reproducible, which can meet the requirements of simultaneous determination of thymol, carvacrol and patchouli alcohol in the inclusion complex.

7.
Article in Chinese | WPRIM | ID: wpr-802279

ABSTRACT

Objective:To compare volatile components in raw products and steamed products of Citri Sarcodactylis Fructus. Method:Volatile oil in different batch of raw products and steamed products of Citri Sarcodactylis Fructus was extracted by steam distillation, and volatile components were identified by GC-MS.The determination was performed with injector temperature of 280℃, high pure helium(≥ 99.999%) as carrier gas, split ratio of 10:1, and sample size of 3 μL with temperature programming.Mass spectrum conditions included electron bombardment ion source, electron bombardment energy of 70 eV, ion source temperature of 230℃, acceleration voltage of 34.6 V, resolution of 2 500, scanning range of m/z 40-350.Peak matching, cutting and noise filtering were used in analyzing data based on GC-MS combined with orthogonal partial least square-discriminant analysis(OPLS-DA). Result:A total of 58 components were separated and identified from the different batches of raw Citri Sarcodactylis Fructus and their processed products, and 27 differential chemical components were identified by multivariate statistical analysis, among them, 15 common differential components presented different changing laws.The relative contents of α-pinene, β-pinene, p-cymene, β-linalool, L-4-terpinenol, α-terpineol, nerol, β-cyclocitral, geraniol and α-citral in raw products were higher than that of their corresponding processed products.The relative contents of β-caryophyllene, cis-α-bergamotene, γ-muurolene, γ-elemene and β-bisabolene in processed products were higher than that of their corresponding raw products. Conclusion:The content and composition of volatile components in Citri Sarcodactylis Fructus from Guangdong province have changed after being steamed.The results can provide experimental basis for expounding the processing principle and quality evaluation of Citri Sarcodactylis Fructus, and have positive significance for promoting the research and development of this Lingnan characteristic decoction pieces.

8.
Article in Chinese | WPRIM | ID: wpr-774560

ABSTRACT

New Dihydroartemisinin Tablets were prepared,and a new dissolution determination method for the tablets was established,which provides reference for revising the quality standard.The dissolution experiment adopted the paddle method with 0.1 mol·L~(-1)hydrochloric acid solution 250 m L as the solvent,the rotating speed of 100 r·min~(-1)and the sampling time of 30 min.HPLC was adopted to determine the dissolution of dihydroartemisinin.The determination was performed on Agilent Eclipse XDB-C_(18)column with the mobile phase of acetonitrile-water(40∶60)at the flow rate of 1.0 m L·min~(-1).The detection wavelength was set at 216 nm,and the column temperature was 30℃.The sample size was 100μL.The linear range of dihydroartemisinin were 1.234 5-79.003 ng(r=1.000 0).The limit of quantitation was 0.308 6 ng,and the limit of detection was 0.154 3 ng.RSDs of precision tests were all lower than 1.0%.The recoveries were 98.09%-102.6%(RSD 1.8%,n=9).The average dissolutions of dihydroartemisinin in 3 batches of samples were 93.81%,92.61%,92.37%,respectively.The determination method is highly reproducible,accurate and reliable,and can objectively reflect the dissolution of Dihydroartemisinin Tablets,and provide a basis for revising the dissolution test of the current quality standard.Based on the dissolution rate,new tablets are superior to original tablets.


Subject(s)
Artemisinins , Chemistry , Chromatography, High Pressure Liquid , Solubility , Tablets
9.
Article in Chinese | WPRIM | ID: wpr-773913

ABSTRACT

Total knee arthroplasty(TKA) has been the final clinical treatment of knee osteoarthritis at the final stage, postoperative limb and prosthesis alignment restoration directly affect clinical effect. In recent years, computer-assisted surgery has been used in TKA and obtained satisfied results. There paper has investigated that the use of computer-assisted systems could improve soft tissue balance after TKA, improve accuracy of installation of prosthesis, recover limb alignment and decrease intro-blood loss, postoperative fat embolism. Although computer-assisted navigation is not mainstream, with the continuous improvement of technology and innovation, the computer-assisted surgery could exert a more important role in TKA, and considerably beneficial effect on improvement of postoperative clinical effects.


Subject(s)
Arthroplasty, Replacement, Knee , Humans , Knee Joint , Osteoarthritis, Knee , Postoperative Period , Surgery, Computer-Assisted
10.
Article in Chinese | WPRIM | ID: wpr-773176

ABSTRACT

To establish a quality constant evaluation system of Alismatis Rhizoma decoction pieces,in order to provide reference for regulating the market circulation of this decoction pieces. A total of 18 batches of Alismatis Rhizoma decoction pieces were collected from different pharmaceutical factories,and the morphological parameters of each sample were tested. The content of alisol B 23-acetate in Alismatis Rhizoma decoction pieces was determined by HPLC in the 2015 edition of Chinese Pharmacopoeia,and the parameters such as quality constant and relative quality constant were calculated. The quality constant range of 18 batches of Alismatis Rhizoma decoction pieces was 0. 390-2. 076. If 18 batches of Alismatis Rhizoma decoction pieces were divided into 3 grades,taking 80% of the maximum quality constant as first grade,50% to 80% as second grade,and the rest as third grade,then the quality constant of firstgrade samples was ≥1. 66,the quality constant of second-grade samples was ≥1. 04 and <1. 66,and the quality constant of third-grade samples was <1. 04. The established quality constant evaluation method is objective and feasible,which can be used to classify the grade of Alismatis Rhizoma decoction pieces and provide a reference method to control the quality of this decoction pieces.


Subject(s)
Alisma , Chemistry , Chromatography, High Pressure Liquid , Drugs, Chinese Herbal , Reference Standards , Quality Control , Rhizome , Chemistry
11.
Article in Chinese | WPRIM | ID: wpr-776113

ABSTRACT

Popliteal cyst is a common peri-knee cyst, also known as a Baker's cyst. With the current development of popliteal cysts, the pathogenesis is mainly due to increased pressure in the knee joint caused by various reasons, leading to a fluid-filled sac that can form behind the knee as a result of enlargement of the gastrocnemius-semimembranosus bursa. The current diagnostic methods include X-ray computed, ultrasound, and magnetic resonance. Among them, magnetic resonance imaging is considered the gold standard for the diagnosis of popliteal cysts. There are various treatments, including conservative treatment, traditional surgical resection and arthroscopic surgery. In recent years, the focus of the treatment of popliteal cysts has gradually shifted from the simple removal of cysts to arthroscopic treatment of intra-articular lesions and the treatment of joint-cyst communication, and achieved a good effect. However, there are still controversies about the most effective treatment, and the best surgery method is still uncertained. It is hoped that high quality prospective studies will be able to directly compare different surgery methods, so as to select the best treatment for popliteal cyst. This article reviews past literature research and describes in detail the epidemiology, pathological mechanism, clinical manifestations and signs, auxiliary examination, diagnosis and differential diagnosis and clinical treatment of popliteal cysts. Different diagnosis methods and treatment methods are compared and summarized to provide basis for clinical diagnosis and treatment.


Subject(s)
Arthroscopy , Bursa, Synovial , Humans , Knee Joint , Popliteal Cyst , Diagnosis , Therapeutics , Prospective Studies
12.
Article in Chinese | WPRIM | ID: wpr-702269

ABSTRACT

Objective To establish a mouse model of immune treatment of asthma through subcutaneous injection with high dose of ovalbumin( OVA) in the abdomen and investigate the role of IL-23/Th17 axis response in its mechanism. Methods With a random number table method, 18 female BALB/c mice were divided into 3 groups( normal control group,asthma group and asthmatic immune tolerance model group) ,with 6 mice in each group. The mice in the asthmatic immune tolerance model group were sensitized with 10 μg OVA by intraperito-neal injection in the abdomen on day 0 and day 7. The mice in the model group induced immune tolerance with 1 mg OVA by subcutaneous injection in the abdomen every day for a week(day 21 to day 27). Both the model group and asthma control group were challenged with 1%OVA on day 35 to day 41. The mice in the normal control group were challenged with the equal amount of saline. On the 50th day,each group were sforzando challenged once with 10% OVA. The airway reactivity was detected at 24 after the last challenge. The enhanced pause( Penh) was measured to evaluate the airway responsiveness with a lung functional instrument. Bronchoalveolar lavage fluid( BALF) was collected to count the total cells and eosinophils,and the cytological studies were conducted. The OVA-specific IgE in peripheral blood,and the IL-5,IFN-γIL-23,IL-10 in BALF were detected by enzyme-linked immunosorbent assay(ELISA). The lung tissue was obtained to perform histological analysis by HE staining. The percentagea of Treg and Th17 cells in spleen and lung tissue were calculated by the flow cytometry( FCM) . Then the expression of transcription factors was detected by q-PCR. Results For the asthmatic immune tolerance model group, the airway respon-siveness,the cell count of eosinophilic granulocytes in BALF,the levels of IL-23 and OVA-specific IgE in the serum were significantly lower than the asthma group and the difference is of statistical significance(P<0. 05),while the difference in the IFN-γlevel in BALF compared with the asthma group is of no statistical significance(P<0. 05). The transcription factor of lung tissue detected with q-PCR showed Foxp3 in the asthmatic immune tolerance model group was significantly higher than the asthma group,while RORγt was significantly lower than the asthma group(P>0. 05) and the differences were of statistical significance(P<0. 05). Conclusion Large dose of OVA specific immuno-therapy can alleviate the chronic inflammatory response of asthmatic mice, and the decrease of Th17 cells associated with the expression of IL-23 was decreased. The mechanism may be related to the correction of the lung Il-23 /Th17 axis.

13.
Article in Chinese | WPRIM | ID: wpr-941715

ABSTRACT

OBJECTIVE@#To discuss the lag effects of daily average temperature on the daily cases of bacillary dysentery in Lanzhou city.@*METHODS@#The data of daily cases of bacillary dysentery were collected during 2008 and 2015 in the city, and the meteorological data at the same period was integrated. The distributed lag non-linear model was used to analyze the relevance between daily average temperature and the daily cases of bacillary dysentery.@*RESULTS@#The exposure response relationship between the daily temperature and the incidence of bacillary dysentery was "J" type, the lowest incidence temperature was 17 °C, and the effect of high temperature on different gender and age groups was higher than that of the intermediate effect. The effect of high temperature and intermediate effect on the male and female groups showed an acute effect, the effect of the day was the highest, followed by fluctuations in temperature, and the greater the impact on women. In different age groups, high temperature effect and the intermediate effect of bacterial dysentery in 0-3 years old groups were the biggest; the effects of high and intermediate temperature on people aged 0-3 and 19-64 year all showed acute effects, which were the maximum value at the day, then decreased volatility; and for people aged over 65 years, the day after the onset, decreases and then increases slowly. There were obviously increasing risks of bacillary dysentery both the high temperature (32 °C) and the middle temperature (26 °C) with respect to 17 °C. The accumulative effects were highest at lag14 days, and the RR (95%CI) values of middle temperature was 2.30 (1.53-3.13), 2.45 (1.65-3.30), 2.41 (1.59-3.28), 2.54 (1.40-3.79), 1.82 (0.41-3.43), 1.98 (1.11-2.93), and 1.73 (0.68-2.88) among the males, females, 0-3 years old, 4-11 years old, 12-18 years old, 19-64 years old and over 65 years old people, respectively; while the high temperature was 2.93 (1.38-4.69), 3.08 (1.48- 4.90), 3.26 (1.60-5.16), 3.12 (1.06-5.56), 1.94 (0.73-5.39), 2.31 (0.54-4.36), and 2.06 (0.02-4.51), respectively.@*CONCLUSION@#The high temperature may increase risks of bacillary dysentery, and the females and younger people were the sensitive population. Meteorological factors play an important role in the occurrence and development of bacillary dysentery in Lanzhou. The incidence of bacillary dysentery is affected by multiple meteorological factors, but the primary one is high temperature. The temperature has not a direct effect on the incidence of bacillary dysentery, but an indirect influence in different populations through the impacts of various aspects of the incidence of bacterial dysentery (residents living habits, communication channels and the habits of the susceptible population).


Subject(s)
Adolescent , Adult , Aged , Child , Child, Preschool , China/epidemiology , Cities , Dysentery, Bacillary/epidemiology , Female , Humans , Incidence , Infant , Infant, Newborn , Male , Meteorological Concepts , Middle Aged , Temperature , Young Adult
14.
Article in Chinese | WPRIM | ID: wpr-350181

ABSTRACT

To optimize the purification process of gynostemma pentaphyllum saponins (GPS) based on "adjoint marker" online control technology with GPS as the testing index. UPLC-QTOF-MS technology was used for qualitative analysis. "Adjoint marker" online control results showed that the end point of load sample was that the UV absorbance of effluent liquid was equal to half of that of load sample solution, and the absorbance was basically stable when the end point was stable. In UPLC-QTOF-MS qualitative analysis, 16 saponins were identified from GPS, including 13 known gynostemma saponins and 3 new saponins. This optimized method was proved to be simple, scientific, reasonable, easy for online determination, real-time record, and can be better applied to the mass production and automation of production. The results of qualitative analysis indicated that the "adjoint marker" online control technology can well retain main efficacy components of medicinal materials, and provide analysis tools for the process control and quality traceability.

15.
Chinese Pharmaceutical Journal ; (24): 337-341, 2017.
Article in Chinese | WPRIM | ID: wpr-858784

ABSTRACT

As a medicine and food homology plant, licorice has received extensive attention from many pharmacologists and biologists. The authors reviewed the new biotechnologies applied to licorice in recent years, including the research on the key enzyme genes involved in the biological synthetic pathway of the active constituents, the formation mechanism of genuineness based on genes, the gene regulation of the biosynthesis of active components, and DNA identification of licorice, aiming to bring up some ideas for deeper studies of licorice.

16.
Article in Chinese | WPRIM | ID: wpr-256089

ABSTRACT

As an outstanding representative of traditional Chinese medicine(TCM) prescriptions accumulated from famous TCM doctors' clinical experiences in past dynasties, classical TCM excellent prescriptions (cTCMeP) are the most valuable part of TCM system. To support the research and development of cTCMeP, a series of regulations and measures were issued to encourage its simplified registration. There is still a long-way to go because many key problems and puzzles about technology, registration and administration in cTCMeP R&D process are not resolved. Based on the analysis of registration and management regulations of botanical drug products in FDA of USA and Japan, and EMA of Europe, the possible key problems and countermeasures in chemistry, manufacture and control (CMC) of simplified registration of cTCMeP were analyzed on the consideration of its actual situation. The method of "reference decoction extract by traditional prescription" (RDETP) was firstly proposed as standard to evaluate the quality and preparation uniformity between the new developing product under simplified registration and traditional original usages of cTCMeP, instead of Standard Decoction method in Japan. "Totality of the evidence" approach, mass balance and bioassay/biological assay of cTCMeP were emphatically suggested to introduce to the quality uniformity evaluation system in the raw drug material, drug substance and final product between the modern product and traditional decoction.

17.
Article in Chinese | WPRIM | ID: wpr-231010

ABSTRACT

In this study, an HPLC method was developed for simultaneous determination of seven alkaloids (cytosine, oxymatrine, N-oxysophocarpine, N-methylcytisine, sophoranol, matrine, and sophocarpine) and three flavonoids (trifolirhizin, fermononetin, and maackiain) from different samples of Sophorae Tonkinensis Radix et Rhizoma. Samples were analyzed on a Welch XtimateTM C₁₈ column (4. 6 mm× 250 mm, 5 μm) eluted with the mobile phase of acetonitrile (A) and 0.01 mol•L⁻¹ ammonium acetate solution (pH 8.0) (B) in a linear gradient mode as follows: 0-20 min,4%-14% A;20-30 min,14%-25% A;30-45 min,25%-40% A;45-65 min,40%-55% A;65-75 min,55% A. The flow rate of the mobile phase, the column temperature, and the PDA detector wavelength were set at 1.0 mL•min⁻¹, 30 ℃, and 225 nm, respectively. For the method validation, these ten compounds showed good separation and satisfactory linearity (r≥0.999 7) within the concentration ranges tested. The mean recoveries were in the range of 98.60% to 102.6% with the RSD (n=6) between 0.60% and 3.7%. This method was proved to be simple, accurate and repeatable. The quantitative results showed that there were significant differences in the contents of seven alkaloids and three flavonoids among the different samples. This result revealed that the quality of Sophorae Tonkinensis Radix et Rhizoma varied widely. This method could be used for the simultaneous determination of the multi-ingredients from Sophorae Tonkinensis Radix et Rhizoma, which might provide scientific evidences to evaluate/control the quality of Sophorae Tonkinensis Radix et Rhizoma, comprehensively.

18.
Article in Chinese | WPRIM | ID: wpr-237690

ABSTRACT

Currently, chemotherapy is one of the main therapy for cancer. But the traditional antitumor drugs are systemic distribution in vivo, they are difficult to achieve an effective drug concentration in the tumor tissue and don't have the ability to distinguish normal cells and tumor cells by themselves, that cause systemic toxicity easily and can not meet the clinical needs. With the research on mesoporous silica nanoparticles (MSNs) deepening, more and more attention in the drug delivery system have been payed to in recent years, because of its unique physicochemical structure characteristics, it has the effect on specific targets, directly inhibits the tumor cell growth, reduces the side effects to normal cells, tissues and organs and can be long-term medication, etc. It is expected to be excellent carriers of antitumor drugs. MSNs application in the field of cancer treatment has now become a hot research field of medicine. In this paper, the latest research about MSNs in antitumor drugs targeting delivery system from 2008 to 2015 is summarized, including the application of MSNs separately in antitumor drug targeting, passive targeting, active targeting, physical or chemical conditions response targeting and other compound targeting drug delivery system. We expect it to provide a reference to the toxicity reducing and efficacy enhancing and further development of chemical medicine, natural medicine and monomeric compound of chinese herbal medicine.


Subject(s)
Animals , Antineoplastic Agents , Chemistry , Pharmacology , Drug Delivery Systems , Methods , Humans , Nanoparticles , Chemistry , Neoplasms , Drug Therapy , Silicon Dioxide , Chemistry
19.
Article in English | WPRIM | ID: wpr-264603

ABSTRACT

<p><b>OBJECTIVE</b>Interferon-γ (IFN-γ) plays an important role in apoptosis and was shown to increase the risk of diabetes. Visfatin, an adipokine, has anti-diabetic, anti-tumor, and regulating inflammatory properties. In this study we investigated the effect of visfatin on IFN-γ-induced apoptosis in rat pancreatic β-cells.</p><p><b>METHODS</b>The RINm5F (rat insulinoma cell line) cells exposed to IFN-γ were treated with or without visfatin. The viability and apoptosis of the cells were assessed by using MTT and flow cytometry. The expressions of mRNA and protein were detected by using real-time PCR and western blot analysis.</p><p><b>RESULTS</b>The exposure of RINm5F cells to IFN-γ for 48 h led to increased apoptosis percentage of the cells. Visfatin pretreatment significantly increased the cell viability and reduced the cell apoptosis induced by IFN-γ. IFN-γ-induced increase in expression of p53 mRNA and cytochrome c protein, decrease in mRNA and protein levels of anti-apoptotic protein Bcl-2 were attenuated by visfatin pretreatment. Visfatin also increased AMPK and ERK1/2 phosphorylation and the anti-apoptotic action of visfatin was attenuated by the AMPK and ERK1/2 inhibitor.</p><p><b>CONCLUSION</b>These results suggested that visfatin protected pancreatic islet cells against IFN-γ-induced apoptosis via mitochondria-dependent apoptotic pathway. The anti-apoptotic action of visfatin is mediated by activation of AMPK and ERK1/2 signaling molecules.</p>


Subject(s)
Adenylate Kinase , Metabolism , Animals , Apoptosis , Physiology , Cell Line , Cytokines , Physiology , Flow Cytometry , Interferon-gamma , Physiology , Islets of Langerhans , Cell Biology , MAP Kinase Signaling System , Nicotinamide Phosphoribosyltransferase , Physiology , Rats , Real-Time Polymerase Chain Reaction , Signal Transduction
20.
Article in English | WPRIM | ID: wpr-636891

ABSTRACT

Forkhead Box c2 (FOXC2) is a member of forkhead/winged-helix family of transcription factors. The relationship between FOXC2 and invasive breast cancers, including basal-like breast cancer (BLBC, a subtype of breast cancer), remains to be elucidated. In this study, immunohistochemistry was used to detect the expression of FOXC2 in samples from 103 cases of invasive breast cancers and 15 cases of normal mammary glands. The relationship between FOXC2 and clinical parameters of invasive breast cancers such as patient's age, tumor size, lymph node metastasis, tumor grade, the expression of ER, PR, HER-2 and p53, and Ki-67 labeling index (LI) was evaluated. The expression of FOXC2 was detected in parent MCF7 cells, MCF cells transfected with FOXC2 expression vectors and MDA-MB-435 cells by immunohistochemistry and Western blotting. Transwell assay was used to determine the invasive ability of these cells. The results showed that FOXC2 was strongly expressed in basal epithelial cells in normal mammary glands and weakly expressed or even not expressed in glandular epithelial cells. The majority of invasive breast cancers (71.8%, 74/103) had negative or weak expression of FOXC2. However, FOXC2 was strongly expressed in 60.7% of BLBCs. Moreover, FOXC2 was related with tumor grade, p53 expression, ki-67 LI and lymph nodes metastasis. It was expressed in FOXC2-transfected MCF cells and MDA-MB-435 cells but not in parent MCF cells. Transwell assay revealed that MCF cells transfected with FOXC2 expression vectors were more aggressive than the parent MCF cells, suggesting a positive correlation between FOXC2 and the invasion of breast cancer. It was concluded that there is a significant association between FOXC2 and the metastasis of invasive breast cancer. FOXC2 may be used as a new marker for the diagnosis and prognosis prediction of different subtypes of invasive breast cancers.

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