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蒲黄总黄酮对Palmitate培养下的C2C12骨骼肌细胞葡萄糖代谢的影响 被引量:12
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作者 娄少颖 刘毅 +3 位作者 陈伟华 应健 何燕铭 王文健 《上海中医药大学学报》 CAS 2008年第2期39-42,共4页
目的:探讨蒲黄总黄酮(PTF)对骨骼肌细胞葡萄糖代谢的影响。方法:PTF处理棕榈酸(Palmitate)诱导而致胰岛素抵抗(IR)的C2C12骨骼肌细胞,采用XTT法观察药物对细胞活性的影响;通过检测培养液中的葡萄糖含量反映葡萄糖消耗量;3H-葡萄糖摄入... 目的:探讨蒲黄总黄酮(PTF)对骨骼肌细胞葡萄糖代谢的影响。方法:PTF处理棕榈酸(Palmitate)诱导而致胰岛素抵抗(IR)的C2C12骨骼肌细胞,采用XTT法观察药物对细胞活性的影响;通过检测培养液中的葡萄糖含量反映葡萄糖消耗量;3H-葡萄糖摄入法观察细胞对葡萄糖的转运率。结果:0.25mmol/LPalmitate培养16h,造成C2C12骨骼肌细胞葡萄糖消耗量下降34.66%,0.5g/LPTF可使其葡萄糖消耗量显著增加,且呈一定的时间依赖效应,与罗格列酮(ROS)相比,统计学差异显著(P<0.05);0.25mmol/LPalmi-tate培养16h,使C2C12骨骼肌细胞葡萄糖摄取率下降30.43%,造成骨骼肌细胞胰岛素抵抗(IR)模型,0.5g/LPTF可使IR模型葡萄糖转运率增加32.39%,ROS可使其转运率增加45.88%,与模型组相比,差异有统计学意义(P<0.05)。结论:PTF能显著增加C2C12骨骼肌细胞的葡萄糖消耗和摄取,这可能是PTF改善骨骼肌IR的机制之一。 展开更多
关键词 蒲黄总黄酮 糖代谢 棕榈酸 胰岛素抵抗
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Lipase-Catalyzed Synthesis of Sn-2 Palmitate: A Review 被引量:8
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作者 Wei Wei Cong Sun +4 位作者 Xiaosan Wang Qingzhe Jin Xuebing Xu Casimir CAkoh Xingguo Wang 《Engineering》 SCIE EI 2020年第4期406-414,共9页
Human milk fat(HMF)is an important source of nutrients and energy for infants.Triacylglycerols(TAGs)account for about 98%of HMF and have a unique molecular structure.HMF is highly enriched in palmitic acid(PA)at the s... Human milk fat(HMF)is an important source of nutrients and energy for infants.Triacylglycerols(TAGs)account for about 98%of HMF and have a unique molecular structure.HMF is highly enriched in palmitic acid(PA)at the sn-2 position of the glycerol backbone(more than 70%)and in unsaturated fatty acids at the sn-1,3 position.The specific TAG structure in HMF plays a valuable function in infant growth.Sn-2 palmitate(mainly 1,3-dioleoyl-2-palmitoyl-glycerol)is one of the structured TAGs that is commonly supplemented into infant formula in order to enable it to present a similar structure to HMF.In this review,the development of the lipase-catalyzed synthesis of sn-2 palmitate over the last 25 years are summarized,with a focus on reaction schemes in a laboratory setting.Particular attention is also paid to the commercialized sn-1,3 regioselective lipases that are used in structured TAGs synthesis,to general methods of TAG analysis,and to successfully developed sn-2 palmitate products on the market.Prospects for the lipase-catalyzed synthesis of sn-2 palmitate are discussed. 展开更多
关键词 Structured triacylglycerols palmitic acid Human milk fat substitutes Lipase-catalyzed reaction Sn-2 palmitate Quantitative analysis
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Repression of PKR mediates palmitate-induced apoptosis in HepG2 cells through regulation of Bcl-2 被引量:5
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作者 Xuerui Yang 《Cell Research》 SCIE CAS CSCD 2009年第4期469-486,共18页
The present study shows that double-stranded RNA-dependent protein kinase (PKR) regulates the protein expres- sion level and phosphorylation of Bcl-2 and plays an anti-apoptotic role in human hepatocellular carcinom... The present study shows that double-stranded RNA-dependent protein kinase (PKR) regulates the protein expres- sion level and phosphorylation of Bcl-2 and plays an anti-apoptotic role in human hepatocellular carcinoma ceils (HepG2). In various types of cells, saturated free fatty acids (FFAs), such as palmitate, have been shown to induce cellular apoptosis by several mechanisms. Palmitate down-regulates the activity of PKR and thereby decreases the level of Bcl-2 protein, mediated in part by reduced activation of the NF-KB transcription factor. In addition to the level of Bel-2 protein, the phosphorylation of Bcl-2 at different amino acid residues, such as Ser70 and Ser87, is also important in regulating cellular apoptosis. The decrease in the phosphorylatiou of Bcl-2 at Ser70 upon exposure to palmitate is mediated by inhibition of PKR and possibly by c-Jun N-terminal kinase (JNK), whereas the phosphory- lation of Bcl-2 at Ser87 is unaffected by palmitate or PKR. In summary, PKR mediates the regulation of the protein level and the phosphorylation status of Bel-2, providing a novel mechanism of palmitate-induced apoptosis in HepG2 cells. 展开更多
关键词 palmitate apoptosis HepG2 PKR phosphorylation of Bcl-2 NF-KB JNK
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Microencapsulation by Spray Drying of Vitamin A Palmitate from Oil to Powder and Its Application in Topical Delivery System 被引量:1
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作者 Avinash B. Gangurde Purnima D. Amin 《Journal of Encapsulation and Adsorption Sciences》 2017年第1期10-39,共30页
Vitamin A palmitate (VAP) contains retinol and palmitic acid which is easily absorbed by body and widely used in skin care products. But, it is a hydrophobic and oxidation sensitive molecule which undergoes rapid degr... Vitamin A palmitate (VAP) contains retinol and palmitic acid which is easily absorbed by body and widely used in skin care products. But, it is a hydrophobic and oxidation sensitive molecule which undergoes rapid degradation especially in an aqueous environment. The purpose of this study was to prepare microcapsules of VAP using combination maltodextrin and modified starches. Emulsion of VAP was prepared using cremophore RH 40 with Tween 80 in a homogenizer and formed emulsion was spray-dried. The spray process was optimized using a central composite design for two variables to obtain microcapsules with desirable characteristics. Microcapsules containing 30% of VAP were produced using different concentration of wall materials. The prepared microcapsules were evaluated for their physical, morphological, in-vitro drug release and SEM study. The results showed that obtained microcapsules are nearly spherical in shape with a particle size ranged from 1 to 12 μm. The drug content and encapsulation efficiency (53% - 63%) of different batches were found within acceptable range. These stabilized drug loaded microcapsules were incorporated into silicone cream based formulation for convenient topical application and evaluated for its physicochemical parameters. The drug release study showed 80.18% to 83.43% of drug release from VAP microcapsules while topical formulations prepared by VAP microcapsules showed 67.09% to 71.45% drug release at the end of 24 hrs. The formulations were kept for 3 months stability study as per ICH guidelines and found to be stable. 展开更多
关键词 VITAMIN A palmitate MICROENCAPSULATION Spray DRYING STARCH Derivatives TOPICAL Delivery
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Reaction kinetics of isopropyl palmitate synthesis 被引量:1
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作者 付丽丽 白银鸽 +1 位作者 吕高志 蒋登高 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2015年第8期1335-1339,共5页
In this study, the kinetics of isopropyl palmitate synthesis including the reaction mechanism was studied based on the two-step noncatalytic method. The liquid-phase diffusion effect on the reaction process was elimin... In this study, the kinetics of isopropyl palmitate synthesis including the reaction mechanism was studied based on the two-step noncatalytic method. The liquid-phase diffusion effect on the reaction process was eliminated by adjusting the stirring rate. The results showed that the two-step reaction followed a tetrahedral mechanism and conformed to second-order reaction kinetics. Nucleophilic attack on the carbonyl carbon afforded an intermediate, containing a tetrahedral carbon center. The intermediate ultimately decomposed by elimination of the leaving group, affording isopropyl palmitate. The experimental data were analyzed at different temperatures by the integral method. The kinetic equations of the each step were deduced, and the activation energy and frequency factor were obtained. Experiments were performed to verify the feasibility of kinetic equations, and the result showed that the kinetic equations were reliable. This study could be very signi ficant to both industrial application and determining the continuous production of isopropyl palmitate. 展开更多
关键词 Isopropyl palmitate Reaction kinetics Chemical reaction Preparation Chloridization palmitic acid
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HPLC Quantification of Dexamethasone Palmitate in Bronchoalveolar Lavage Fluid of Rat after Lung Delivery with Large Porous Particles
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作者 Alain N’Guessan Armand Koffi +5 位作者 Ismaë l L. Dally Christophe N’Cho Amin Claire Gueutin Nicolas Tsapis Elias Fattal 《American Journal of Analytical Chemistry》 2019年第9期404-414,共11页
A high-performance liquid chromatography (HPLC) method has been developed and validated for the determination of dexamethasone palmitate (DXP) in bronchoalveolar fluid lavage samples (BALF). DXP in rat BALFs containin... A high-performance liquid chromatography (HPLC) method has been developed and validated for the determination of dexamethasone palmitate (DXP) in bronchoalveolar fluid lavage samples (BALF). DXP in rat BALFs containing the internal standard (IS), testosterone decanoate (TD), was extracted using a mixture of chloroform and methanol (9:1, v/v). Extracts were then centrifuged, dried and dissolved in acetonitrile. A chromatographic separation based on an isocratic elution was done using acetonitrile and water (85:15, v/v) as a mobile phase at a flow rate of 1.2 mL/min. The graph of the developed method was linear within the tested calibration range of 0.5 - 40 μg/mL. The overall extraction recovery of DXP from BALF samples was 84.3% ± 1.6%. The accuracy (relative error) and precision (coefficient of variation) values were within the pre-defined limits of ≤15% at all concentrations. This methodology has been applied to determine levels of DXP in BALF samples collected from rats treated with DXP large porous particles. The measured concentrations were successfully evaluated using a non-compartment pharmacokinetic model. Since the developed method requires only a microvolume (100 μL) of BALF sample for analysis, it is therefore particularly suitable for the evaluation of drug biodistribution in lung. 展开更多
关键词 DEXAMETHASONE palmitate Bronchoalveolar LAVAGE FLUID HPLC
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Effects of methyl palmitate and lutein on LPS-induced acute lung injury in rats
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作者 El-Sayed M Ammar Maha H Sharawy +1 位作者 Asem A Shalaby Dina S El-Agamy 《World Journal of Respirology》 2013年第2期20-28,共9页
AIM: To investigate the effects of methyl palmitate and lutein on lipopolysaccharide(LPS)-induced acute lung injury(ALI) in rats and explore the possible mechanisms. METHODS: Male Sprague-Dawley rats were divided into... AIM: To investigate the effects of methyl palmitate and lutein on lipopolysaccharide(LPS)-induced acute lung injury(ALI) in rats and explore the possible mechanisms. METHODS: Male Sprague-Dawley rats were divided into 4 groups:(1) control;(2) LPS;(3) Methyl palmitate; and(4) Lutein groups. Methyl palmitate(300 mg/kg, ip) was administered 3 times per week on alternating days while lutein(100 mg/kg, oral) was given once daily. After 1 wk of vehicle/methyl palmitate/lutein treatment, ALI was induced by a single dose of LPS(7.5 mg/kg, iv). After 24 h of LPS injection, animals were sacrificed then biochemical parameters and histopathology were assessed. RESULTS: Treatment with methyl palmitate attenuated ALI, as it significantly decreased the lung wet/dry weight(W/D) ratio, the accumulation of the inflammatory cells in the bronchoalveolar lavage fluid(BALF) andhistopathological damage. However, methyl palmitate failed to decrease lactate dehydrogenase(LDH) activity in BALF. On the other hand, lutein treatment produced significant anti-inflammatory effects as revealed by significant decrease in accumulation of inflammatory cells in lung, LDH level in BALF and histopathological damage. Methyl palmitate and lutein significantly increased superoxide dismutase(SOD) and reduced glutathione(GSH) activities with significant decrease in the lung malondialdehyde(MDA) content. Importantly, methyl palmitate and lutein decreased the level of the inflammatory cytokine tumor necrosis factor-α(TNF-α) in the lung. Lutein also reduced LPS-mediated overproduction of pulmonary nitrite/nitrate(NO-2/NO-3), which was not affected by methyl palmitate pretreatment. CONCLUSION: These results demonstrate the potent protective effects of both methyl palmitate and lutein against LPS-induced ALI in rats. These effects can be attributed to potent antioxidant activities of these agents, which suppress inflammatory cell infiltration and regulated cytokine effects. 展开更多
关键词 Acute lung injury LIPOPOLYSACCHARIDE METHYL palmitate LUTEIN RATS
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Paliperidone palmitate-induced facial angioedema:A case report
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作者 Maytinee Srifuengfung Thanisorn Sukakul +1 位作者 Chanika Liangcheep Natee Viravan 《World Journal of Clinical Cases》 SCIE 2020年第20期4876-4882,共7页
BACKGROUND Paliperidone palmitate is a once-monthly injectable,atypical antipsychotic.To our knowledge,there has been only one report of paliperidone palmitate-induced angioedema presenting with acute laryngeal edema ... BACKGROUND Paliperidone palmitate is a once-monthly injectable,atypical antipsychotic.To our knowledge,there has been only one report of paliperidone palmitate-induced angioedema presenting with acute laryngeal edema with subsequent respiratory arrest.Here,we present a case report of paliperidone palmitate-induced angioedema with a relatively mild clinical presentation compared with the previously reported case,and the patient's condition was not complicated by lifethreatening anaphylaxis.CASE SUMMARY A 79-year-old female,who had a major neurocognitive disorder due to Alzheimer's disease with behavioral disturbances.Paliperidone palmitate was offlabel used to control her aggression,irritability,and psychosis.After induction doses(150 mg and 100 mg intramuscularly,given 1 wk apart),she developed intermittent swelling of the face,eyelids,and lips on day 17 after the initial dose,and the edema was explicitly seen on day 20.The diagnosis was paliperidone palmitate-induced angioedema.The monthly injection dose was discontinued on day 33 after the initial dose.The angioedema was subsequently alleviated,and it had completely resolved by day 40 after the initial dose.CONCLUSION Paliperidone palmitate-induced angioedema is a rare condition and can present with a mild,intermittent facial edema,which may be overlooked in clinical practice. 展开更多
关键词 Case report Paliperidone palmitate Paliperidone LAI Long-acting paliperidone ANGIOEDEMA
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Dihydroartemisinin ameliorates palmitate-induced apoptosis in cardiomyocytes via regulation on miR-133b/Sirt1 axis
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作者 LONGJU QI XIAOYING XU +6 位作者 BIN LI BO CHANG SHENGCUN WANG CHUN LIU LIUCHENG WU XIAODI ZHOU QINGHUA WANG 《BIOCELL》 SCIE 2022年第4期989-998,共10页
Excessive fat ectopically deposited in the non-adipose tissues is considered as one of the leading causes of myopathy.The aim of this study was to investigate the role of Dihydroartemisinin(DHA)in palmitate(PAL)-incub... Excessive fat ectopically deposited in the non-adipose tissues is considered as one of the leading causes of myopathy.The aim of this study was to investigate the role of Dihydroartemisinin(DHA)in palmitate(PAL)-incubated H9c2 cells(lipotoxicity-induced cell injury model).Cell viability of PAL-treated cells was determined by MTT assay,and apoptotic regulators were examined by qRT-PCR and western blot analysis,in the absence or in the presence of DHA,respectively.Expression levels of miR-133b and Sirt1 were also evaluated by qRT-PCR and western blotting examination.PAL decreased the viability of H9c2 cells and enhanced the expression of apoptotic genes.DHA reversed the effect of PAL on cell viability and lowed the level of Caspase3 and Bax.It also lowered the expression of miR-133b,while enhanced the expression of Bcl-2.Sirt1 was revealed as target of miR-133b through transcriptional regulation and the process was affected by DHA.DHA partially protected against the PAL-induced lipotoxicity by influencing the expression of miR-133b that hindered the activity of Sirt1.DHA may be used as a potential treatment in clinical management for lipotoxicity induced heart complications. 展开更多
关键词 microRNA-133b palmitate acid CARDIOMYOCYTES SIRT1 Dihydroaretemisinin
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Development and Application of a Validated HPLC Method for the Determination of Clindamycin Palmitate Hydrochloride in Marketed Drug Products: An Optimization of the Current USP Methodology for Assay
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作者 Geoffrey K. Wu Abhay Gupta +1 位作者 Mansoor A. Khan Patrick J. Faustino 《Journal of Analytical Sciences, Methods and Instrumentation》 2013年第4期202-211,共10页
A simple efficient isocratic reversed-phase HPLC method was developed and validated for the determination of clindamycin palmitate hydrochloride (CPH) and its commercially available oral solution products. Separation ... A simple efficient isocratic reversed-phase HPLC method was developed and validated for the determination of clindamycin palmitate hydrochloride (CPH) and its commercially available oral solution products. Separation was achieved on a Phenomenex Zorbax (Luna) cyano column (150 × 4.6 mm, 5 μm) with a Phenomenex cyano guard cartridge (4 × 3.0 mm) on Agilent 1050 series HPLC system. CPH and its resolution standard lincomycin were eluted isocratically at a flow rate of 1 mL/min with a simplified mobile phase (potassium phosphate buffer (5 mM, pH 3.0)—acetonitrile—tetrahydrofuran (20:75:5, v/v/v)) and detected at 210 nm. The column was maintained at 25?C. The method was validated according to USP category I requirements. Robustness and forced degradation studies were also conducted. CPH marketed drug products were obtained from a drug distributor and assayed for potency using the validated method. Validation acceptance criteria were met in all cases. The analytical range for CPH was 15 - 500 μg/mL and the linearity was r2 > 0.999 over three days. The method was determined to be specific and robust. Both accuracy (92.0% - 103.8%) and precision (0.67% - 1.52%) were established across the analytical range for low, intermediate and high QC concentrations. Method applicability was demonstrated by analyzing two marketed products of CPH, in which results showed potency >98%. The method was determined to be an enhancement over the current USP methodology for assay as a result of increased efficiency, reduced organic solvents and the elimination of matrix modifiers. This method was successfully applied for the quality assessment of: 1) currently marketed drug products and 2) will in future assess the product quality of novel dosage forms of CPH for pediatric use. 展开更多
关键词 CLINDAMYCIN palmitate HYDROCHLORIDE (CPH) HPLC Method Validation PEDIATRIC DOSAGE Form
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Process Improvement on the Lipase-Catalyzed Synthesis of Oleyl Palmitate, a Wax Ester via Response Surface Methodology (RSM)
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作者 Salina Mat Radzi Nor Mona Yunus +4 位作者 Siti Salhah Othman Mahiran Basri Mohd Basyaruddin Abd. Rahman Hanina Mohd. Noor Syamsul Kamar Muhammad 《Journal of Chemistry and Chemical Engineering》 2011年第2期95-104,共10页
High performance enzymatic synthesis of oleyl palmitate, a wax ester was carried out by lipase-catalyzed esterification of palmitic acid and oleyl alcohol. Response surface methodology (RSM) based on 5-level, 3-vari... High performance enzymatic synthesis of oleyl palmitate, a wax ester was carried out by lipase-catalyzed esterification of palmitic acid and oleyl alcohol. Response surface methodology (RSM) based on 5-level, 3-variable of centre composite rotatable design (CCRD) was used to evaluate the interactive effects of synthesis, of temperature (40-60 ℃); amount of enzyme (0.1-0.4 g) and substrate molar ratio of oleyl alcohol to palmitic acid (1:1-4:1) on the percentage yield of wax ester. All reactions were fixed at 1 hour of reaction time. The optimum condition obtained from RSM for the reactions were temperature of 57.9 ℃, enzyme amount of 0.26 g and molar ratio of substrates of 2.92. The actual experimental yield was 91.2% under the optimum condition, which compared well with the maximum predicted value of 92.0%. Comparison of predicted and experimental values reveal good correspondence between them, implying that empirical models derived from RSM can be used to adequately describe the relationship between the factors and response in the synthesis of oleyl palmitate. 展开更多
关键词 Response surface methodology oleyl palmitate wax ester lipase-catalyzed synthesis
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曲美他嗪对棕榈酸诱导的H9C2心肌细胞脂毒性凋亡的影响
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作者 王凯 张子钊 刘彤 《天津医科大学学报》 2025年第1期30-35,共6页
目的:建立棕榈酸(PA)诱导的H9C2细胞凋亡模型,验证曲美他嗪(TMZ)是否对H9C2细胞脂毒性凋亡产生保护作用及具体机制。方法:在体外培养的H9C2心肌细胞,当细胞密度为90%时分别给予不同时间(0、6、12、24 h)、不同浓度(0、50、100、150、200... 目的:建立棕榈酸(PA)诱导的H9C2细胞凋亡模型,验证曲美他嗪(TMZ)是否对H9C2细胞脂毒性凋亡产生保护作用及具体机制。方法:在体外培养的H9C2心肌细胞,当细胞密度为90%时分别给予不同时间(0、6、12、24 h)、不同浓度(0、50、100、150、200、300、350μmol/L)的PA刺激(n=3),建立脂毒性损伤模型,用CCK8检测细胞活性确定最佳刺激条件,蛋白印迹法证实细胞凋亡。实验共分6组,分别为对照组(CON)、PA(200μmol/L)组、CON+TMZ3(10μmol/L)组、PA(200μmol/L)+TMZ1(0.1μmol/L)组、PA(200μmol/L)+TMZ2(1μmol/L)组、PA(200μmol/L)+TMZ3(10μmol/L)组(n=3),用CCK8检测细胞活性、蛋白印迹测定凋亡相关蛋白表达量。后续为观察细胞内脂质含量变化,实验分为4组,分别为对照组(CON)、PA(200μmol/L)组、TMZ3(10μmol/L)组、PA(200μmol/L)+TMZ3组(n=3),通过油红O染色镜下观察。结果:与CON组相比,200μmol/L PA组及12 h组细胞活力明显下降(t=15.8、20.82,均P<0.05),使用CCK8检测并最终确定PA 200μmol/L、刺激12 h的条件下,H9C2细胞脂毒性损伤较大、存活细胞最多。与CON组相比,200μmol/L PA组Bax蛋白表达明显升高(t=3.201,P<0.05),150μmol/L PA组Bcl-2蛋白表达明显降低(t=2.479,P<0.05),蛋白检测证实细胞凋亡。与PA刺激组相比,PA+TMZ1组、PA+TMZ2组、PA+TMZ3组的细胞活力升高(F=420.1,均P<0.05)、PA+TMZ2组、PA+TMZ3组凋亡相关蛋白Bcl-2表达升高(t=6.028、8.952,均P<0.05)、Bax表达下降(t=3.392、4.275,均P<0.05),随着TMZ浓度的增加,Bax表达降低、Bcl-2表达增加(F=3.763、7.548,均P<0.05)。与CON组相比,PA组H9C2细胞内脂滴含量明显增多。与PA组相比,PA+TMZ3组H9C2细胞内脂滴含量明显减少。结论:棕榈酸刺激可诱导H9C2心肌细胞脂毒性凋亡,曲美他嗪可抑制棕榈酸诱导的H9C2细胞脂毒性凋亡。 展开更多
关键词 棕榈酸 凋亡 曲美他嗪 BAX/BCL-2
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社区精神分裂症患者使用棕榈酸帕利哌酮长效针剂预防复发的效果及影响因素
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作者 梁哲 唐锦津 +5 位作者 赵姣文 李娜娜 孙仲礼 卢艳 胡晓龙 张燕华 《中国健康心理学杂志》 2025年第2期167-172,共6页
目的:探讨社区精神分裂症患者使用棕榈酸帕利哌酮长效针剂预防复发效果及影响因素。方法:选取2020年8月至2023年3月参加上海市嘉定区社区长效治疗药物项目使用棕榈酸帕利哌酮注射液治疗的患者208例,回顾性收集患者人口学资料和临床治疗... 目的:探讨社区精神分裂症患者使用棕榈酸帕利哌酮长效针剂预防复发效果及影响因素。方法:选取2020年8月至2023年3月参加上海市嘉定区社区长效治疗药物项目使用棕榈酸帕利哌酮注射液治疗的患者208例,回顾性收集患者人口学资料和临床治疗等指标,并前瞻性观察随访一年,观察终点事件为患者疾病复发。生存分析采用Kaplan-Meier分析,生存率比较采用log-rank检验,各因素对复发的影响采用多因素Cox比例风险回归模型分析。结果:本研究中选取的患者1年无复发率为91.5%;Log-rank检验显示,患者不同年龄段、性别、5年内住院情况及曾住院次数的复发率差异有统计学意义(P<0.05);多因素Cox比例风险回归模型分析显示,患者病程(HR=1.056,95%CI=1.011~1.102,P<0.05)及5年内曾住院(HR=3.511,95%CI=1.106~11.148,P<0.05)是应用长效针剂后复发风险的危险因素,而女性是患者应用长效针剂后复发风险的保护因素(HR=0.200,95%CI=0.078~0.514,P<0.05)。结论:对于社区精神分裂症患者应用棕榈酸帕利哌酮长效针剂预防复发效果好,其中患者性别、病程及5年内曾住院是影响复发的独立危险因素。 展开更多
关键词 精神分裂症 棕榈酸帕利哌酮 长效针剂 预防复发
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Nerve growth factor protects against palmitic acid- induced injury in retinal ganglion cells 被引量:1
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作者 Pan-shi Yan Shu Tang +3 位作者 Hai- feng Zhang Yuan-yuan Guo Zhi-wen Zeng Qiang Wen 《Neural Regeneration Research》 SCIE CAS CSCD 2016年第11期1851-1856,共6页
Accumulating evidence supports an important role for nerve growth factor (NGF) in diabetic retinopathy. We hypothesized that NGF has a protective effect on rat retinal ganglion RGC-5 cells injured by palmitic acid ... Accumulating evidence supports an important role for nerve growth factor (NGF) in diabetic retinopathy. We hypothesized that NGF has a protective effect on rat retinal ganglion RGC-5 cells injured by palmitic acid (PA), a metabolic factor implicated in the development of dia- betes and its complications. Our results show that PA exposure caused apoptosis of RGC-5 cells, while NGF protected against PA insult in a concentration-dependent manner. Additionally, NGF significantly attenuated the levels of reactive oxygen species (ROS) and malondialde- hyde (MDA) in RGC-5 cells. Pathway inhibitor tests showed that the protective effect of NGF was completely reversed by LY294002 (PI3K inhibitor), Akt VIII inhibitor, and PD98059 (ERK1/2 inhibitor). Western blot analysis revealed that NGF induced the phosphorylation of Akt/FoxO1 and ERK1/2 and reversed the PA-evoked reduction in the levels of these proteins. These results indicate that NGF protects RGC-5 cells against PA-induced injury through anti-oxidation and inhibition of apoptosis by modulation of the PI3K/Akt and ERK1/2 signaling pathways. 展开更多
关键词 nerve regeneration RGC-5 cells palmitic acid nerve growth factor apoptosis PI3K AKT FoxOl ERK1/2 neural regeneration
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Lipase-catalyzed regioselective synthesis of palmitolyglucose ester in ionic liquids 被引量:1
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作者 Jintian Liang Wentian Zeng +1 位作者 Pingjia Yao Yuanan Wei 《Advances in Biological Chemistry》 2012年第3期226-232,共7页
Candida antarctica lipase B (CAL-B) was used as a catalyst in the synthesis of palmitolyglucose ester in the ionic liquids, 1-butyl-3-methylimidazolium triflu- oromethanesulfonate ([Bmim][TfO]), with glucose as a subs... Candida antarctica lipase B (CAL-B) was used as a catalyst in the synthesis of palmitolyglucose ester in the ionic liquids, 1-butyl-3-methylimidazolium triflu- oromethanesulfonate ([Bmim][TfO]), with glucose as a substrates and palmitic acid vinyl ester as the acyl donor. The effect of substrate ratio, lipase content, and temperature on the activity and stability of lipase was studied. The reaction conditions in [Bmim][TfO] re- sulting in the highest yield of the sugar ester were a temperature of 50?C, enzyme concentration of 50 mg/ mL, and a molar ratio of glucose/vinyl palmitate of 1:3. The major reaction product was purified and char- acterized by FT-IR, HPLC, MS and NMR, as being 6-O-palmitolyglucose ester. The advantages of ionic liquid vs. organic solvent were noted. 展开更多
关键词 Ionic Liquids 6-O-palmitolyglucose ESTER LIPASE palmitic Acid VINYL ESTER Glucose
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Eicosane, pentadecane and palmitic acid: The effects in in vitro wound healing studies
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作者 Xin Qi Chuah Patrick Nwabueze Okechukwu +1 位作者 Farahnaz Amini Swee Sen Teo 《Asian Pacific Journal of Tropical Biomedicine》 SCIE CAS 2018年第10期490-499,共10页
Objective: To examine the wound healing properties of eicosane, pentadecane and palmitic acid by evaluating in term of anti-microbial, anti-inflammatory, proliferation, migration and collagen synthesis. Methods: Anti-... Objective: To examine the wound healing properties of eicosane, pentadecane and palmitic acid by evaluating in term of anti-microbial, anti-inflammatory, proliferation, migration and collagen synthesis. Methods: Anti-microbial activities of Staphylococcus aureus, Bacillus subtilis, Escherichia coli and Pseudomonas aeruginosa were evaluated by carrying out disk diffusion and agar well diffusion methods. Growth rate of tested bacteria was also evaluated for 8 h in conjunction with the sample drugs. Besides, U937 cell lines were used as model study for realtime mRNA genes expression studies of TNF-毩 and IL-12 under the treatment. Proliferation, migration and collagen content synthesis were carried out on human dermal fibroblast. Results: None of the sample drugs possessed significant inhibition of bacteria tested in this study both in disk diffusion and agar well diffusion methods. In contrary, significantly low expressed mRNA gene expression levels of TNF-毩 and IL-12 were found under the treatment of respective drugs. Meanwhile in proliferation, migration and hydroxyproline content analysis, all the sample drugs showed no significant positive stimulation. Conclusions: This study therefore explains that apart from their potential in downregulating pro-inflammatory cytokines, these three compounds which were examined individually may not be good candidates in promoting wound healing. 展开更多
关键词 Eicosane Pentadecane palmitic ACID WOUND HEALING TNF-α IL-12
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Cannabidiol (CBD) Prevents Palmitic Acid-Induced Drop in Mitochondrial Membrane Potential
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作者 R. Gallily Z. Yekhtin +1 位作者 M. Tarshis R. Vogt Sionov 《Pharmacology & Pharmacy》 2019年第9期387-395,共9页
Exposure of macrophages and microglia cells to the saturated palmitic acid (PA) leads to reduction in the mitochondrial membrane potential (), shrinkage of the cells and apoptosis. Here we show that the Cannabis compo... Exposure of macrophages and microglia cells to the saturated palmitic acid (PA) leads to reduction in the mitochondrial membrane potential (), shrinkage of the cells and apoptosis. Here we show that the Cannabis component Cannabidiol (CBD) rescues both macrophages and microglia cells from the detrimental effects of PA. CBD prevents the shrinkage in cell size and the reduction incaused by PA. The protective effect of CBD on the macrophage mitochondria is important for sustaining the macrophage population even under the immunosuppressed conditions caused by this drug. To a similar extent, the antagonistic effect of CBD on PA-mediated microglia cytotoxicity is important for its role in neuroprotection. 展开更多
关键词 CBD MITOCHONDRIAL MEMBRANE Potential MACROPHAGES MICROGLIA palmitic Acid
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棕榈酸帕利哌酮注射液治疗精神分裂症患者内分泌代谢的影响观察
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作者 陆敏 班春霞 +7 位作者 李冠军 高存友 李广伟 程诚 李莉 周耀明 陈敬兰 孙仲礼 《临床精神医学杂志》 CAS 2024年第6期444-447,共4页
目的:评估精神分裂症患者接受棕榈酸帕利哌酮注射液1个月剂型(once-monthly paliperidone palmitate,PP1M)治疗后内分泌、代谢情况。方法:对51例口服利培酮治疗有效的精神分裂症患者换用PP1M治疗后,于基线及治疗后1个月、3个月、6个月... 目的:评估精神分裂症患者接受棕榈酸帕利哌酮注射液1个月剂型(once-monthly paliperidone palmitate,PP1M)治疗后内分泌、代谢情况。方法:对51例口服利培酮治疗有效的精神分裂症患者换用PP1M治疗后,于基线及治疗后1个月、3个月、6个月、12个月监测内分泌、代谢等相关指标,于基线及治疗后12个月对患者进行个体和社会功能量表(personal and social performance scale,PSP)评估。结果:治疗12个月时PSP因子分对社会有益的活动、扰乱及攻击行为两项与基线相比,差异具有统计学意义(t=-2.07、3.71,P均<0.05);重复测量方差分析显示,不同时间点,患者体质量指数、腰围、血糖、血脂等指标差异均无统计学意义(P>0.05);而在血清泌乳素(prolactin,PRL)上,差异具有统计学意义(F=3.021,P<0.05),且各个时间点血清泌乳素浓度均高于基线(P均<0.05)。结论:PP1M对代谢影响较小,且能改善患者社会功能,但会导致血清PRL水平增高,需引起关注。 展开更多
关键词 棕榈酸帕利哌酮注射液(1个月剂型) 精神分裂症 代谢 内分泌
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棕榈酸定形复合相变材料研究进展
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作者 谭心 王云飞 +1 位作者 方桂花 祁晖 《化工新型材料》 CAS CSCD 北大核心 2024年第10期12-16,共5页
棕榈酸因存在热导率低和物态相变时易泄漏的缺点,限制了其在诸多领域的发展和应用。棕榈酸定形复合相变材料以支撑材料为基体,将棕榈酸分散在基体材料中,不仅有效解决棕榈酸的泄漏问题,而且基体材料的加入还能提高复合相变材料的热导率... 棕榈酸因存在热导率低和物态相变时易泄漏的缺点,限制了其在诸多领域的发展和应用。棕榈酸定形复合相变材料以支撑材料为基体,将棕榈酸分散在基体材料中,不仅有效解决棕榈酸的泄漏问题,而且基体材料的加入还能提高复合相变材料的热导率。综述了基于不同基体材料的棕榈酸定形复合相变材料的研究进展,指出了棕榈酸定形复合相变材料的不足之处,并展望了其未来研究方向。 展开更多
关键词 棕榈酸 定形复合相变材料 泄漏 热导率
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盐酸克林霉素棕榈酸酯联合西地碘对慢性牙周炎患者的应用效果
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作者 王伟新 张丽娜 《河南医学研究》 CAS 2024年第1期148-152,共5页
目的探究盐酸克林霉素棕榈酸酯与西地碘联合治疗慢性牙周炎(CP)的效果。方法回顾性选取新乡医学院第一附属医院2021年5月至2022年3月收治的CP患者,以1∶1原则根据不同治疗方案将68例患者分为2组,各34例。对照组接受西地碘治疗,联合组接... 目的探究盐酸克林霉素棕榈酸酯与西地碘联合治疗慢性牙周炎(CP)的效果。方法回顾性选取新乡医学院第一附属医院2021年5月至2022年3月收治的CP患者,以1∶1原则根据不同治疗方案将68例患者分为2组,各34例。对照组接受西地碘治疗,联合组接受盐酸克林霉素棕榈酸酯+西地碘治疗。对比两组疗效、牙周指标[菌斑指数(PLI)、牙龈指数(GI)、牙周袋探诊深度(PD)、牙齿附着丧失(AL)]、疼痛程度[视觉模拟评分法(VAS)评估]、生活质量[CP口腔健康影响程度量表(OHIP-CP)]、血清因子水平[人髓系细胞触发受体-1(TREM-1)、高迁移率族蛋白B-1(HMGB-1)、瘦素、内脂素]、不良反应及复发率。结果联合组总有效率(97.06%)高于对照组(76.47%)(P<0.05);治疗后联合组PD、AL、PLI、GI、VAS及OHIP-CP评分低于对照组(P<0.05);治疗后联合组TREM-1、HMGB-1、内脂素低于对照组,瘦素高于对照组(P<0.05);联合组复发率(12.12%)低于对照组(34.61%)(P<0.05);两组不良反应发生率相比,差异无统计学意义(P>0.05)。结论盐酸克林霉素棕榈酸酯联合西地碘治疗CP效果显著,可改善牙周状况,减轻痛感,提高生活质量,降低复发率,安全可靠。 展开更多
关键词 盐酸克林霉素棕榈酸酯 西地碘 慢性牙周炎
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