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Synthesis and microencapsulation of oleic acid sterol ester liquid crystals for its application in sunscreen formulations
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作者 Xuze Liu Chang Xu +1 位作者 Liangliang Lin Hujun Xu 《日用化学工业(中英文)》 北大核心 2025年第11期1408-1418,共11页
This study reports the synthesis of oleic acid sterol ester with liquid crystalline properties and its enhanced stability and UV-blocking performance through microencapsulation.Oleic acid sterol ester was synthesized ... This study reports the synthesis of oleic acid sterol ester with liquid crystalline properties and its enhanced stability and UV-blocking performance through microencapsulation.Oleic acid sterol ester was synthesized via the esterification of phytosterol and oleic acid,whose structure was characterized using Fourier-transform infrared spectroscopy(FTIR)and mass spectrometry(MS).Its liquid crystalline behavior was confirmed via the polarized optical microscopy(POM),thermogravimetric analysis(TGA),differential scanning calorimetry(DSC),wide-angle X-ray scattering(WAXS),and small-angle X-ray scattering(SAXS).UV absorption tests were conducted to assess the UV-blocking performance of the oleic acid sterol ester liquid crystals.To improve the stability of its liquid crystalline structure,the oleic acid sterol ester was encapsulated into microcapsules through the emulsion polymerization.SPF measurements were performed on the sunscreen formulations containing liquid crystal microcapsules.The oleic acid sterol ester displayed cholesteric liquid crystalline behavior and strong UVA absorption,which indicates its suitability as a natural UV absorber.Microencapsulation further enhanced its stability and UV-blocking properties.SPF testing showed that the formulations with microcapsules achieved an SPF value of 7.01,which surpasses the nano titanium dioxide(SPF=6.23)and significantly outperform the unencapsulated liquid crystal formulations(SPF=2.65).This study highlights the potential of microencapsulated oleic acid sterol ester as a novel UV absorber in the sunscreen formulations,offers the enhanced stability and effective UV protection,and showcases its application potential in the innovative cosmetic products. 展开更多
关键词 PHYTOSTEROL liquid crystals MICROENCAPSULATION UV absorption sunscreen formulations SPF testing
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Sensory Characterizations and Optimization of Cashew Apple Jam Formulations Using Baobab Powder as a Source of Pectin
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作者 Marie Bianoun Louise Dégni Doudjo Soro +3 位作者 Essan Bla Zita N’Goran-Aw Djedjro Clément Akmel Nogbou Emmanuel Assidjo Kouassi Benjamin Yao 《Food and Nutrition Sciences》 2025年第1期120-136,共17页
Cashew processing in Côte d’Ivoire focuses only on the cashew nut, to the detriment of the apple. Only a very small proportion of the apple is processed into juice. The aim of this work is to enhance the value o... Cashew processing in Côte d’Ivoire focuses only on the cashew nut, to the detriment of the apple. Only a very small proportion of the apple is processed into juice. The aim of this work is to enhance the value of cashew apples by transforming them into jam. Specifically, the aim was first to characterize the sensory properties of cashew apple jam formulations using baobab powder as a source of pectin and then to optimise the formulations. A Box-Behken design with pH, Sugar, and Baobab as factors was used to model and characterize the jam sensory descriptors, and a multivariate analysis with SensomineR was used to characterize the jam formulations. The desirability function was used to optimise the formulations. The results show globally significant regressions at the 0.05 threshold for the sensory descriptors Gelling, Brilliance, Smell, Sweetness, and (-)Astringency, with the exception of (-)Salinity. The R2 coefficients are greater than 80%. The factors studied could have effects on the sensory descriptors of cashew jam formulations. The Baobab had the main effect on the gelling, smell, and astringency of the jams. Brilliance depended on the added sugar. A product effect (p < 0.001) was observed for the descriptors Smell, Gelling, Brilliance, and Sweetness, as these allowed the panelists to find differences between the formulations. Optimum jam formulation can be achieved with 51.56% sugar and 2.12% Baobab at a pH of 3.15. Cashew apple jam using Baobab offers opportunities to add value to apples that have long been abandoned in the field. It would be important to find conditions for prolonged storage of this jam. 展开更多
关键词 Cashew Apple Sensory Characterization Jam formulation Area Design Product Effect Overall Desirability
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Synthesis and in vitro/in vivo assessment of sustained-release oral oseltamivir phosphate suspension
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作者 Yuanrong Xin Yutian Dou +6 位作者 Xiaolin Chen Yingshu Feng Xuesheng Liu Caleb Kesse Firempong Dan Yang Hongfei Liu Haibing He 《Journal of Chinese Pharmaceutical Sciences》 2025年第3期269-283,共15页
Oseltamivir phosphate(OP),renowned as one of the most effective drugs for influenza treatment,encounters several challenges,including poor stability,difficulty in swallowing,and a bitter taste,thereby limiting its com... Oseltamivir phosphate(OP),renowned as one of the most effective drugs for influenza treatment,encounters several challenges,including poor stability,difficulty in swallowing,and a bitter taste,thereby limiting its compliance,particularly among children.Consequently,this study aimed to devise a novel sustained-release suspension of OP employing an ion exchange resin as a carrier to address these challenges.The OP-drug resin complex(OP-DRC)was synthesized utilizing ion exchange technology,while OP-coated microcapsules(OP-CM)were fabricated via the emulsion-evaporation method.The optimization of the formulation process for the OP sustained-release suspension was achieved through a combination of single-factor experimentation and orthogonal experimental design.Furthermore,the drug release kinetics and pharmacokinetic properties of the sustained-release suspension were thoroughly evaluated both in vitro and in vivo.Scanning electron microscopy(SEM),X-ray diffraction(XRD),and attenuated total reflectance Fourier-transform infrared spectroscopy(ATR-FTIR)analyses confirmed the formation of drug-resin complexes via ionic bonding.The in vitro cumulative release rates were found to be 16%(1 h),53%(6 h),and 84%(24 h),respectively.Notably,the self-made sustained-release suspension exhibited an extended half-life(21.518 h),delayed time to peak concentration(T_(max))(6 h),and reduced maximum plasma concentration(C_(max))(0.397μg/mL)in comparison to commercial granules(half-life=8.466 h;T_(max)=2 h;C_(max)=0.631μg/mL).Additionally,the area under the curve(AUC)indicated that the bioavailability of the self-made OP suspension surpassed that of the commercial OP granules by 101%.These findings underscored the successful development of an oral OP sustained-release suspension characterized by stability,tastelessness,ease of swallowing,convenient administration,and sustained-release properties,thereby potentially enhancing drug compliance among children. 展开更多
关键词 Oseltamivir phosphate sustained-release Ion exchange resin SUSPENSION
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Cost-effectiveness of sustained-release isosorbide mononitrate capsules for coronary heart disease:A network meta-analysis
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作者 Hui Zhang Danxia Luo +3 位作者 Xuelan Zhou Xiaofang Zeng Ran Xiong Yeyou Xu 《Journal of Chinese Pharmaceutical Sciences》 2025年第4期370-384,共15页
Different dosage forms can significantly impact pharmacokinetics in vivo,leading to varied effects and potential adverse reactions.This study aimed to evaluate the efficacy,safety,and cost-effectiveness of isosorbide ... Different dosage forms can significantly impact pharmacokinetics in vivo,leading to varied effects and potential adverse reactions.This study aimed to evaluate the efficacy,safety,and cost-effectiveness of isosorbide mononitrate sustained-release capsules(IMSRC)combined with conventional treatments,compared to isosorbide mononitrate tablets(IMT)combined with conventional treatments,for managing angina pectoris in patients with coronary heart diseases.A network meta-analysis(NMA)was conducted to assess the efficacy and safety of IMSRC and IMT.Relevant literature was sourced from databases,including PubMed,Embase,Cochrane Library,ScienceDirect,Web of Science,CNKI,Wanfang,and VIP,covering publications up to July 2023.The cost-effectiveness analysis(CEA)was performed from the perspective of China’s healthcare system,utilizing inputs derived from the NMA.The analysis included 15 studies.The NMA results revealed no significant difference in efficacy and safety between IMSRC plus conventional treatments and IMT plus conventional treatments.However,both combinations were more effective than conventional treatments without isosorbide mononitrate.No differences in safety were observed among the three groups.The surface under the cumulative ranking(SUCRA)of the NMA indicated that IMT had a slight edge over IMSRC in the total effective rate of angina pectoris,whereas IMSRC showed higher probabilities for markedly effective rate and ECG effective rate compared to IMT.The incidence of adverse events was ranked as IMT>conventional preparation>IMSRC.The CEA results highlighted that the incremental cost-effectiveness ratios(ICERs)for the markedly effective and total effective rates of angina pectoris were-133.41 and-260.20,respectively.The ICERs for ECG effective rates were-83.34 and-234.24,respectively.In conclusion,while IMSRC combined with conventional treatments and IMT combined with conventional treatments were similar in efficacy and safety,IMSRC proved to be more economical. 展开更多
关键词 Isosorbide mononitrate sustained-release capsules Network meta-analysis COST-EFFECTIVENESS Coronary heart disease
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Study and Formulation of a Dietary Cold Sauce Based on Pumpkin Seed Oil and Quail Eggs
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作者 Koumba Hawa Toundoufedouno Kéloua Kourouma Adama Moussa Sakho 《Journal of Environmental Science and Engineering(B)》 2025年第1期36-45,共10页
This work focuses on the formulation of a dietary cold sauce,mayonnaise,which combines the therapeutic properties of two basic ingredients:PSO(Pumpkin Seed Oil)and quail egg,both of which are renowned for their high f... This work focuses on the formulation of a dietary cold sauce,mayonnaise,which combines the therapeutic properties of two basic ingredients:PSO(Pumpkin Seed Oil)and quail egg,both of which are renowned for their high functional properties.PSO is essentially made up of unsaturated fatty acids(50%to 65%)including linoleic acid,from the omega 6 family,oleic acid(20%to 50%),a monounsaturated fatty acid(omega 9),cucurbitin,phytosterols,tri-terpenes and vitamin E(3.5 mg%).The nutritional,fatty acid,vitamin and mineral compositions of the mayonnaise compared with the ingredients,the physico-chemical characteristics of the quail egg,the PSO and the tasting of the mayonnaise were determined and gave results in terms of variable contents which are recorded in Tables 2-8.The results obtained were satisfactory.Mayonnaise,a semi-solid emulsion of oil in water with viscoelastic properties due to the network formed by lipoproteins adsorbed around neighbouring drops of oil,was prepared using the ratio of quail egg and PSO 1/4.This study may offer an alternative way of making dietary sauces. 展开更多
关键词 Nutritional study food formulation dietary sauce PSO quail eggs
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Identification of bioactive compounds and molecular targets of Fuke Huahuang formulation to treat vaginitis
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作者 Huiyu Liu Jie Mo +3 位作者 Cheng Liang Qingting Chen Bin Yang Jiaqi Liu 《Animal Models and Experimental Medicine》 2025年第6期1095-1104,共10页
Background:Fuke Huahuang formulation(FHF)is widely used in the treatment of vaginitis,with clinical evidence indicating its promising anti-inflammatory properties.Methods:We explored the bioactive components and poten... Background:Fuke Huahuang formulation(FHF)is widely used in the treatment of vaginitis,with clinical evidence indicating its promising anti-inflammatory properties.Methods:We explored the bioactive components and potential mechanisms of FHF for treating vaginitis,and reveal its pharmacological activities against vaginitis.Results:A total of 12 anti-inflammatory components in FHF and 584 pharmacological targets were identified.Furthermore,1427 vaginitis-associated targets were identified,and 184 intersection targets between FHF and vaginitis were constructed for network analysis.Gene Ontology and pathway analysis revealed that the therapeutical targets of FHF against vaginitis are involved in modulating inflammatory stress,enhancing immunoregulation,reconstructing the microenvironment,and suppressing cell damage.Molecular docking analysis further suggested the possible direct binding of the bioactive compounds of FHF(fumarine)to the core targets,including AKT Serine/Threonine Kinase 1(AKT1),Signal Transducer and Activator of Transcription 3(STAT3),and nuclear factor-kappaB(NF-κB).Experimental validation found that FHF-treated vaginitis rats exhibited reduced intracellular AKT1,STAT3,and NF-κB protein expressions.Conclusion:Overall,we identified the bioactive compounds and pharmacological mechanisms of FHF against vaginitis,thus offering a theoretical fundament for exploring FHF for treating vaginitis in the future. 展开更多
关键词 biological validation biotargets Fuke Huahuang formulation MECHANISM VAGINITIS
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Inhalable formulations in pharmacy:from basic research to clinical applications
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作者 Yuying Yan Xuebin Yang Zhaoshuai Ji 《Journal of Chinese Pharmaceutical Sciences》 2025年第6期503-518,共16页
In recent years,the rising prevalence of respiratory diseases,coupled with advancements in biotechnology and pharmacology,has positioned inhalable formulations as a preferred method of drug administration.This approac... In recent years,the rising prevalence of respiratory diseases,coupled with advancements in biotechnology and pharmacology,has positioned inhalable formulations as a preferred method of drug administration.This approach enables direct and rapid delivery of medication to the lungs,maximizing therapeutic effects while minimizing dosage and potential side effects.In this review,we meticulously examined current literature and clinical trial databases to present a comprehensive overview of three key areas:(1)inhalation devices currently utilized in clinical settings;(2)the clinical applications of approved inhalable formulations;and(3)preclinical research on inhalable treatments targeting various lung conditions,including pulmonary infections,tuberculosis,lung cancer,pulmonary fibrosis,as well as systemic diseases like Parkinson’s disease.The objective was to delve into both foundational research and the clinical use of inhalable formulations within the pharmaceutical field,with the aim of fostering their broader adoption and guiding the development of inhalable therapies for a more comprehensive range of diseases. 展开更多
关键词 Inhalable formulations Inhalation device Inhaled vaccine Pulmonary infection Inhalable nanomedicine
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Shenzhuo formulation ameliorates diabetic nephropathy by regulating cytochrome P450-mediated arachidonic acid metabolism
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作者 Zhong-Yong Zhang Yu-Ming Wang +8 位作者 Ning Wang Yuan-Song Wang Hui Zhang Duo Wang Li-Xin Wang Huan-Tian Cui Wei-Bo Wen Shu-Quan Lv Yong-Jun Cao 《World Journal of Diabetes》 2025年第5期331-345,共15页
BACKGROUND Diabetic nephropathy(DN)is a major complication of diabetes,marked by progressive renal damage and an inflammatory response.Although research has investigated the pathological mechanisms underlying DN,effec... BACKGROUND Diabetic nephropathy(DN)is a major complication of diabetes,marked by progressive renal damage and an inflammatory response.Although research has investigated the pathological mechanisms underlying DN,effective treatment options remain limited.AIM To evaluate the therapeutic impact of Shenzhuo formulation(SZF)on a DN mouse model and to examine its potential molecular mechanisms using transcriptomic and metabolomic approaches.METHODS We established a DN mouse model through a high-fat diet combined with streptozotocin(STZ)injection,followed by SZF treatment.We analyzed SZF’s effects on gene expression and metabolite profiles in renal tissues of DN mice using transcriptomics and metabolomics techniques.Additionally,based on transcriptomic and non-targeted metabolomic findings,we further assessed SZF’s influence on the expression of factors related to the cytochrome P450(CYP450)-mediated arachidonic acid(AA)metabolism pathway,as well as its effects on inflammation and oxidative stress.RESULTS SZF intervention significantly decreased hyperglycemia and mitigated renal function impairment in DN mice.Pathological analysis revealed that SZF treatment improved renal tissue damage,reduced fibrosis,and diminished glycogen deposition.Transcriptomic analysis indicated that SZF influenced mRNA expression of CYP450-related genes,including Cyp2j13,Cyp2b9,Pla2 g2e/Cyp4a12a,Cyp4a32,Cyp2e1,and Cyp4a14.Non-targeted metabolomic results demonstrated that SZF altered the levels of metabolites associated with the AA metabolic pathway,including 5,6-EET,14,15-EET,phosphatidylcholine,and 20-HETE.Further experiments showed that SZF upregulated the expression of CYP4A and CYP2E proteins in renal tissue,as well as CYP2J and CYP2B proteins.Additionally,SZF significantly reduced the expression of inflammatory factors in renal tissue,enhanced antioxidant enzyme activity,and alleviated oxidative stress.CONCLUSION SZF exerts anti-inflammatory and antioxidant effects by regulating CYP450-mediated AA metabolism,leading to improved renal function and improved pathological state in DN mice. 展开更多
关键词 Diabetic nephropathy Shenzhuo formulation TRANSCRIPTOMIC METABOLOMIC Cytochrome P450 Arachidonic acid metabolic INFLAMMATORY Oxidative stress
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A two-field mixed formulation with scattered pressure node distribution in element-free Galerkin method for alleviating volumetric locking in hyperelastic materials
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作者 S.Sai Kumar Albert Shaji Nelson Muthu 《Acta Mechanica Sinica》 2025年第10期115-131,共17页
Rubber-like materials that are commonly used in structural applications are modelled using hyperelastic material models.Most of the hyperelastic materials are nearly incompressible,which poses challenges,i.e.,volumetr... Rubber-like materials that are commonly used in structural applications are modelled using hyperelastic material models.Most of the hyperelastic materials are nearly incompressible,which poses challenges,i.e.,volumetric locking during numerical modelling.There exist many formulations in the context of the finite element method,among which the mixed displacementpressure formulation is robust.However,such a displacement-pressure formulation is less explored in meshfree methods,which mitigates the problem associated with mesh distortion during large deformation.This work addresses this issue of alleviating volumetric locking in the element-free Galerkin method(EFGM),which is one of the popular meshfree methods.A two-field mixed variational formulation using the perturbed Lagrangian approach within the EFGM framework is proposed for modelling nearly incompressible hyperelastic material models,such as Neo-Hookean and Mooney-Rivlin.Taking advantage of the meshless nature of the EFGM,this work introduces a unique approach by randomly distributing pressure nodes across the geometry,following specific guidelines.A wide spectrum of problems involving bending,tension,compression,and contact is solved using two approaches of the proposed displacement-pressure node formulation involving regular and irregular pressure node distribution.It is observed that both approaches give accurate results compared to the reference results,though the latter offers flexibility in the pressure nodal distribution. 展开更多
关键词 Volumetric locking Mixed displacement-pressure formulation EFG method Irregular pressure node distribution Hyperelastic materials
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The 2025 China New-Formulation Detergent Products Development Conference & The 2025 China Daily Chemicals Forum on Biodegradable,Recyclable and Renewable Technologies Successfully Concluded
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作者 The editorial office 《China Detergent & Cosmetics》 2025年第4期89-90,共2页
The“2025 China New-Formulation Detergent Products Development Conference & 2025 China Daily Chemicals Biodegradable,Recyclable,Renewable Technology Innovation Summit”,cohosted by the China Research Institute of ... The“2025 China New-Formulation Detergent Products Development Conference & 2025 China Daily Chemicals Biodegradable,Recyclable,Renewable Technology Innovation Summit”,cohosted by the China Research Institute of Daily Chemical(RIDCI),was held in Yangzhou,Jiangsu Province.The event brought together over 230 representatives from government agencies,industry associations,and leading enterprises to contribute insights for the high-quality development of China's daily chemical industry. 展开更多
关键词 biodegradable technologies daily chemicals industry recyclable technologies CONFERENCE renewable technologies summit new formulation detergent products high quality development
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High-efficiency γ-aminobutyric acid nano-formulation for turnip mosaic virus:excellent adhesion performance and amplified plant defensive responses
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作者 Chao Zhang Jingyi Chen +5 位作者 Yubo Wen Yichao Liu Xuan Li Shuo Yan Jianjun Zhao Jun Li 《Horticultural Plant Journal》 2025年第6期2285-2288,共4页
Chinese cabbage(Brassica rapa subsp.pekinensis)is a widely cultivated vegetable crop in Asia with significant economic importance(Li et al.,2024;Yu et al.,2024).As a potyvirus with the broad host range,turnip mosaic v... Chinese cabbage(Brassica rapa subsp.pekinensis)is a widely cultivated vegetable crop in Asia with significant economic importance(Li et al.,2024;Yu et al.,2024).As a potyvirus with the broad host range,turnip mosaic virus(TuMV)is a major pathogen affecting Chinese cabbages,leading to severe yield losses(Li et al.,2019).Traditional control measures have shown limited efficacy,and the long-term use of chemical pesticides has led to significant issues such as environmental pollution and pathogen resistance(Samara et al.,2021;Lu et al.,2022).Biologicallyderived pesticides have garnered considerable attention owing to their eco-friendly attributes(Ayilara et al.,2023).γ-Aminobutyric acid(GABA),initially discovered in potato tubers,has been proven to regulate immune responses and enhance resistance to fungal and bacterial pathogens by modulating reactive oxygen species and stress-related hormone signals(Tarkowski et al.,2020;Wang et al.,2025).But biologically-derived agents typically face challenges such as large particle size and instability,which limit their practical application and bioavailability(Daraban et al.,2023). 展开更多
关键词 turnip mosaic virus chemical pesticides mosaic virus tumv control measures aminobutyric acid environmental pollution high efficiency nano formulation
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Pharmacokinetics of nifedipine sustained-release tablets in healthy Chinese volunteers 被引量:3
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作者 武静 王本杰 +2 位作者 魏春敏 卜凡龙 郭瑞臣 《Journal of Chinese Pharmaceutical Sciences》 CAS 2007年第3期192-196,共5页
Aim To establish a LC-MS method for determining the concentration of nifedipine in human plasma and to evaluate the pharmacokinetic characteristics of nifedipine sustained-release tablets. Methods A XB-C18 (5 μm, 4.... Aim To establish a LC-MS method for determining the concentration of nifedipine in human plasma and to evaluate the pharmacokinetic characteristics of nifedipine sustained-release tablets. Methods A XB-C18 (5 μm, 4.6 mm ×150 mm) column and a mobile phase of methanol: 0.01 mol·L^-1ammonium acetate (60:40, V/V) were used to separate nifedipine, the detections was accuracy under atmosperic pressure electronic spray ionization (AP-ESI) mode and ion mass spectrum (m/z) of 314.9 [M+H]^+ for nifedipine, and 320.8 [M+H]^+ for lorazepam (Internal Standard, IS). Results The linear range of nifedipine was 0.3 - 80 ng·mL^-1 ( r = 0.9997), and the limit of quantitation (LOQ) was 0.3 ng·mL^-1. The nifedipine pharmacokinetic parameters after a single dose of 20 mg nifedipine sustained-release tablets test (T) or reference (R) were as the followings, t1/2 (6.73 ± 2.00) h and (7.04 ± 2.18) h, Tmax (4.28 ± 0.70) h and (4.48 ± 0.70) h, Cmax(39.66 ± 10.58) ng·mL^-1 and (40.19 ± 10.97) ng·mL^-1, AUC0-36 (391.63 ± 108.55) ng·mL^-1·h and (387.57 ± 121.51) ng·mL^-1·h, and AUC0-∞ (408.28 ± 121.16) ng·mL^-1·h and (406.15 ± 133.13) ng·mL^-1·h. The relative bioavailability of nifedipine sustained-release tablets (test) was (103.02 ± 13.93) %. Conclusion LC-MS method for the determination of concentrations of nifedipine in human plasma was sensitive and accurate, and could be used in nifedipine bioavailability and pharmacokinetic studies. 展开更多
关键词 Nifedipine sustained-release tablets LC-MS PHARMACOKINETICS BIOEQUIVALENCE
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Bioavailability of 10-hydroxycamptothecin-phospholipid complex loaded by solid dispersion and lipid-based formulations 被引量:3
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作者 吴先闯 郝海军 +3 位作者 刘瑜新 宋晓勇 张永州 张红芹 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2015年第12期780-788,共9页
Previous study has shown that 10-hydroxycamptothecin(HCPT) has well-established pharmacological effects in vitro.However,its in vivo bioavailability is very poor due to various problems,which severely restricts its ... Previous study has shown that 10-hydroxycamptothecin(HCPT) has well-established pharmacological effects in vitro.However,its in vivo bioavailability is very poor due to various problems,which severely restricts its clinical applications.In the present study,phospholipid complex(PC) technology was employed to improve the solubility and bioavailability of HCPT.XRD data confirmed the formation of HCPT-PC.However,our previously prepared HCPT-PC is too sticky,which may result in the slow dissolution rate and negative effects on its absorption.Therefore,we prepared HCPT-PC-solid dispersion(HCPT-PC-SD)and lipid-based formulations of HCPT-PC through simple preparation process.The results showed that the dissolution rate of HCPT-PC was effectively improved by solid dispersion technology,which reached 91.73%in 45 min.Pharmacokinetic study revealed that the AUC_(0-t) of HCPT-PC-SD and HCPT-PC lipid-based formulations was effectively further increased compared with HCPT-PC.Moreover,we found that the combination of SD technology and lipid-base formulations could be a promising drug-delivery system to improve the oral bioavailability of HCPT-PC.In addition,we showed that the bioavailability of HCPT-PC lipid-base formulations was even greater than that of HCPT-PC-SD.In particular,lipid-base formulations could be prepared just by a simple method,suggesting its feasibility of industrialization. 展开更多
关键词 10-HYDROXYCAMPTOTHECIN Phospholipid complex Solid dispersion Lipid-based formulations BIOAVAILABILITY
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Qualitative and quantitative analysis of HPLC fingerprint of Wuji gastric floating sustained-release tablets 被引量:1
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作者 陈中芬 刘文 +2 位作者 陈大业 施晓伟 王群 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2015年第5期310-317,共8页
A qualitative and quantitative test method of fingerprint of Wuji gastric floating sustained-release tablets was established. High performance liquid chromatography (HPLC) was adopted, using Agilent ZORBAX SB-C18 co... A qualitative and quantitative test method of fingerprint of Wuji gastric floating sustained-release tablets was established. High performance liquid chromatography (HPLC) was adopted, using Agilent ZORBAX SB-C18 column (250 mm×4.6 mm, 5 μm) as the chromatographic column, and acetonitrile-0.05 mol/L potassium dihydrogen phosphate solution as the mobile phase in a gradient elution with the flow rate of 1.0 mL/min. Sample solution (10 μL) was injected and was tested at the wavelength of 225 nm for 75 min at the column temperature of 30 ℃, Fingerprint similarity software (2004A version) was used to conduct data analysis. A total of 11 batches of Wuji gastric floating sustained-release tablets were tested and analyzed with HPLC fingerprint. Seventeen common peaks were found and the similarity of the 11 batches of agents was greater than 0.9, indicating that the production process of the agent is stable and feasible. The method is operable and could effectively control the quality of Wuji gastric floating sustained-release tablets. 展开更多
关键词 FINGERPRINT HPLC Wuji gastric floating sustained-release tablets
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Preparation of Sustained-release Silybin Microspheres by Spherical Crystallization Technique 被引量:1
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作者 胡容峰 朱家壁 +4 位作者 马凤余 许向阳 孙玉亮 梅康康 李 师 《Journal of Chinese Pharmaceutical Sciences》 CAS 2006年第2期83-91,共9页
Aim To improve the dissolution rate and bioavailability of silybin. Methods Sustained-release silybin microspheres were prepared by the spherical crystallization technique with soliddispersing and release-retarding po... Aim To improve the dissolution rate and bioavailability of silybin. Methods Sustained-release silybin microspheres were prepared by the spherical crystallization technique with soliddispersing and release-retarding polymers. A differential scanning calorimeter and an X-ray diffractometer were used to investigate the dispersion state of silybin in the microspheres. The shape, surface morphology, and internal structure of the microspheres were observed using a scanning electron microscope. Characterization of the microspheres, such as average diameter, size distribution and bulk density of the microspheres was investigated. Results The particle size of the microspheres was determined mainly by the agitation speed. The dissolution rate of silybin from microspheres was enhanced by increasing the amount of the dispersing agents, and sustained by the retarding agents. The release rate of microspheres was controlled by adjusting the combination ratio of the dispersing agents to the retarding agents. The resuits of X-ray diffraction and differential scanning calorimetry analysis indicated that silybin was highly dispersed in the microspheres in amorphous state. The release profiles and content did not change after a three-month accelerated stability test at 40 ℃ and 75% relative humidity. Conclusion Sustained-release silybin microspheres with a solid dispersion structure were prepared successfully in one step by a spherical crystallization technique combined with solid dispersion technique. The preparation process is simple, reproducible and inexpensive. The method is efficient for designing sustained-release microspheres with water-insoluble drugs. 展开更多
关键词 SILYBIN sustained-release microsphere solid dispersion spherical crystallization technique
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中国法庭互动话语formulation现象研究 被引量:27
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作者 廖美珍 《外语研究》 CSSCI 北大核心 2006年第2期1-8,13,共9页
本文专门研究法庭互动话语formulation现象,旨在揭示法庭互动话语这种具有特殊规则制约的机构话语的formulation的特征,并对机构话语的研究和司法人员提供启示。具体内容是:(1)法庭话语formulation的类型;(2)法庭话语formulation的功能;... 本文专门研究法庭互动话语formulation现象,旨在揭示法庭互动话语这种具有特殊规则制约的机构话语的formulation的特征,并对机构话语的研究和司法人员提供启示。具体内容是:(1)法庭话语formulation的类型;(2)法庭话语formulation的功能;(3)法庭互动话语formulation行为的特征;(4)法庭话语formulation与互动结构;(5)法庭互动话语formulation与角色关系。 展开更多
关键词 formulation 法庭互动 话语
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Development and Application of the Professional Software for Formulation Optimization Design
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作者 李定华 张沧 +1 位作者 张亮 王建祺 《Journal of Beijing Institute of Technology》 EI CAS 1998年第4期418-424,共7页
Aim To research the computer optimization design in material formulation. Methods The professional software including experimental design, mathematical modeling and optimization of single and multiple purposes was d... Aim To research the computer optimization design in material formulation. Methods The professional software including experimental design, mathematical modeling and optimization of single and multiple purposes was developed and applied to the formulation design for the flame retardant ethylenepropylene-diene mischpolymer (EPDM) insulation composites. With the aid of equipartition design, the mathematical models were established based on the optimization of the four properties (limiting oxygen index, volume resistance, tensile strength and elongation). Results The models from limited experiments had good significance, and the modeling analysis conclusions were in good agreement with later experiments. The optimization formulation was practically excellent. Conclusion The software enables practically a comprehensive multi-purpose use of material formulation research. 展开更多
关键词 computer optimization formulation design material development
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Pharmacokinetics and Relative Bioavailability ofsustained-release Tablets of Diclofenac Sodiumin Male Volunteers
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作者 季爱民 邹恒琴 +1 位作者 张忠义 车瓯 《Journal of Chinese Pharmaceutical Sciences》 CAS 1995年第1期8-11,共4页
The pharmacokinetics of a sustained- release formulation and an enteric- coated tablet of diclofenac sodium were studied on 8 healthy male volunteers in an open,randomized crossover study.Drug level in serum was assay... The pharmacokinetics of a sustained- release formulation and an enteric- coated tablet of diclofenac sodium were studied on 8 healthy male volunteers in an open,randomized crossover study.Drug level in serum was assayed by HPLC method.The changes in serum concentration were conformed to a l-compartment open model.The t_1/2 (Ke)averaged 2.15±0.17 and ll.60 ± l.95 h,and the areas under the drug concentration curves were 5.87 ± 0.67 and 5.55 ± 0.57μgh/ml for enteric-coated and sustained-release tablet of diclofenac sodium,respectively. The mean relative bioavailability of sustained-release tablet was 0.95 to that of enteric-coated tablet. 展开更多
关键词 Diclofenac sodium PHARMACOKINETICS sustained-release ENTERIC-COATED Rela- tive bioavailability
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用油墨配方软件Ink Formulation5.0调配专色墨实例
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作者 皮阳雪 《印刷质量与标准化》 2014年第3期48-51,共4页
经验配色法常常受到配色者生理、心理因素及其它客观条件的影响,产品质量难以保持稳定,油墨浪费较大,剩余油墨利用率低.另外,依靠经验和感觉配色,只能定性,无法定量,技术的传播与交流比较困难. 电脑配色系统是集测色仪、计算机及配色软... 经验配色法常常受到配色者生理、心理因素及其它客观条件的影响,产品质量难以保持稳定,油墨浪费较大,剩余油墨利用率低.另外,依靠经验和感觉配色,只能定性,无法定量,技术的传播与交流比较困难. 电脑配色系统是集测色仪、计算机及配色软件系统于一体的现代化设备.计算机配色的基本原理是将生产上配色所用油墨的颜色数据,预先储存在电脑中,应用其计算出用这些油墨配得与原稿色相同颜色的混合比例,从而达到实现配方的目的.常用的工具有:打样机或印刷适性仪(图1)、电子天平(图2)、分光光度仪(图3)、标准光源(图4)、配色软件(图5)等. 展开更多
关键词 油墨配方 色差值 软件 Ink formulation5.0
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Efficacy of Lubeikangru formulation in mice with hyperplasia of the mammary glands induced by estrogen and progesterone 被引量:10
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作者 Sun Li Guo Donghui +3 位作者 Liu Qian Xue Yanan Jiang Ning Zheng Hongxin 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2019年第2期174-180,共7页
OBJECTIVE: To evaluate the protective effects of Lubeikangru formula(LF) on hyperplasia of the mammary glands(HMG) induced by estrogen and progesterone in mice.METHODS: Female mice were divided randomly into five grou... OBJECTIVE: To evaluate the protective effects of Lubeikangru formula(LF) on hyperplasia of the mammary glands(HMG) induced by estrogen and progesterone in mice.METHODS: Female mice were divided randomly into five groups: normal, model, tamoxifen(3 mg/kg),Rupixiao(900 mg/kg) and LF(900 mg/kg). All mice except those in the normal group were treated sequentially with estradiol and progesterone to induce HMG. From the tenth day of induction, mice in normal and model groups received distilled water and mice in the other groups were given the corresponding drugs by gavage, once a day, for 30 d.At the end of treatment, the mammary glands, ovaries, hypothalamus, and serum was collected for whole-mount and hematoxylin and eosin(HE)staining, enzyme-linked immunosorbent assays(ELISAs), or western blotting.RESULTS: Whole-mount and HE staining of mammary glands showed that LF rescued(at least in part) the hyperplasic morphology of the mammary glands, and the number of branch points decreased after LF treatment(P < 0.05). ELISAs revealed that levels of estrogen and progesterone were decreased following LF treatment, whereas levels of gonadotropin-releasing hormone, follicle-stimulating hormone, and luteinizing hormone were increased in serum and tissues. Western blotting confirmed that LF treatment led to a reduction in expression of phosphorylated(p)-Erk, p-p38 and p-c-Jun N-terminal kinase. LF was also confirmed to be safe by acute-toxicity tests.CONCLUSION: LF can protect the mammary glands of mice from estrogen-and progesterone-induced hyperplasia by adjusting hormone levels and regulating the mitogen-activated protein kinase pathway. 展开更多
关键词 HYPERPLASIA MAMMARY glands animal Hormones TAMOXIFEN MITOGEN-ACTIVATED protein kinases Lubeikangru formulation
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