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In-silico Toxicity Assessment and Trace Level Quantification of Veratryl Chloride a Potential Genotoxic Impurity in Ivabradine Hydrochloride using LC-MS/MS 利用 LC-MS/MS 对盐酸伊伐布雷定中的潜在基因毒性杂质 Veratryl Chloride 进行室内毒性评估和痕量定量
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150413
Rajavenkata P Patha, Karunakar Dasa, R. Bhoomireddy, Srinivas R Thumu
A sensitive and selective liquid chromatography-mass spectrometry (LC-MS/MS) method using multiple reaction monitoring (MRM) mode was developed and validated for trace analysis of 4-(chloromethyl)-1, 2-dimethoxybenzene (Veratryl chloride) a potential genotoxic impurity in Ivabradine hydrochloride (IVB). Chromatographic separation was performed on a Poroshell 120EC C18 (50 × 3.0 mm, 2.7 μm) column using a mixture of 10 mM ammonium formate and acetonitrile in isocratic elution mode at a 0.25 mL/min flow rate. A simple pre-column derivatization with di-ethylamine was employed for the derivatization of the veratryl chloride. The developed LC-MS/MS method was linear and accurate in the 1.5–10.0 ppm concentration range with r2 ˃ 0.999 and percent recoveries greater than 90%. The developed method was precise with RSD (%) of not more than 4.5%. In-silico genotoxicity and carcinogenicity potential of veratryl chloride was assessed using ICH M7 principles found to be positive. The developed method can identify and quantify veratryl chloride in IVB, hence can be applied by quality control labs of pharmaceutical industries for trace quantification.
为痕量分析盐酸伊伐布雷定(IVB)中潜在的基因毒性杂质--4-(氯甲基)-1, 2-二甲氧基苯(Veratryl chloride),开发并验证了一种采用多反应监测(MRM)模式的灵敏、选择性液相色谱-质谱(LC-MS/MS)分析方法。色谱分离采用 Poroshell 120EC C18(50 × 3.0 mm,2.7 μm)色谱柱,使用 10 mM 甲酸铵和乙腈的混合物,以 0.25 mL/min 的流速在等度洗脱模式下进行。柱前用二乙胺进行了简单的衍生化处理。所建立的 LC-MS/MS 方法在 1.5-10.0 ppm 浓度范围内线性关系良好,r2 ˃ 0.999,回收率大于 90%。所开发的方法精确度高,RSD (%) 不超过 4.5%。采用 ICH M7 原则评估了藜芦酰氯的体内遗传毒性和致癌性,结果呈阳性。所开发的方法可鉴定和定量 IVB 中的藜芦酰氯,因此可用于制药行业质量控制实验室的痕量定量分析。
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引用次数: 0
IN VITRO ANTICANCER POTENTIAL OF PHYTOGENIC AG-AU BIMETALLIC NANOPARTICLES USING CLITORIA TERNATEA FLOWER EXTRACT 使用clitoria ternatea花提取物的植物性ag-au双金属纳米粒子的体外抗癌潜力
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150406
A. Naveena, J. Jeyasundari, P.V Priya, A. Athithan
Bimetallic nanoparticles (BNPs) have gained significant attention in the field of biomedical and pharmaceutical because of its tunable size, shape, high surface to volume and enhanced biological properties. In this study, we report the ecofriendly route to produce the noble (Ag-Au) bimetallic nanoparticles using aqueous flower extract of Clitoria ternatea as a reducing and capping agent. The synthesized C.T-Ag-Au BNPs were characterized by using physicochemical techniques such as UV-visible, FTIR, XRD and SEM-EDX analysis. The UV-visible spectra reveal the formation of homogeneous bimetallic nanoparticles by the single blue-shifted peak at 541 nm of C.T-Ag-Au BNPs. The phyto fabrication of synthesized C.T-Ag-Au BNPs was analyzed using FTIR spectroscopy. XRD confirms the formation of phase pure cubic Ag-Au alloy bimetallic nanoparticles with crystallite size is 14.5 nm. The surface morphology and elemental analysis of C.T-Ag-Au BNPs were examined by using SEM-EDX analysis. The synthesized C.TAg- Au BNPs were evaluated for their cytotoxicity against A549 human lung cancer cells through standard MTT assay. From this assay, green synthesized bimetallic nanoparticles induced cell apoptosis, suggesting that the synthesized C.T-Ag-Au BNPs gave best anticancer properties against lung cancer A549 cell lines.
双金属纳米粒子(BNPs)因其可调的尺寸、形状、高表面积比和增强的生物特性,在生物医学和制药领域备受关注。在本研究中,我们报告了一种利用三尖杉花的水提取物作为还原剂和封端剂生产惰性(Ag-Au)双金属纳米粒子的生态友好型路线。利用紫外可见光、傅立叶变换红外光谱、XRD 和 SEM-EDX 分析等理化技术对合成的 C.T-Ag-Au 双金属纳米粒子进行了表征。紫外可见光谱显示,C.T-Ag-Au BNPs 在 541 纳米波长处出现蓝移单峰,从而形成了均匀的双金属纳米颗粒。傅立叶变换红外光谱分析了合成的 C.T-Ag-Au BNPs 的植物制造过程。XRD 证实形成了结晶尺寸为 14.5 nm 的纯立方银金合金双金属纳米粒子。利用 SEM-EDX 分析法检测了 C.Tg-Au 双金属纳米粒子的表面形貌和元素分析。通过标准的 MTT 试验评估了合成的 C.TAg- Au BNPs 对 A549 人肺癌细胞的细胞毒性。结果表明,绿色合成的双金属纳米粒子能诱导细胞凋亡,这表明合成的 C.Tg-Au BNPs 对肺癌 A549 细胞株具有最佳的抗癌性能。
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引用次数: 0
Development and Optimization of Fluvastatin Sodium Loaded Biodegradable Microspheres 氟伐他汀钠生物可降解微球的开发与优化
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150402
Kishorkumar Sorathi̇a, A. Lumbhani, Santosh Chauhan, Mehul Patel, Tejal Soni̇, B. Suhagia
Fluvastatin sodium is a hypolipidemic agent that reduces cholesterol synthesis by inhibiting HMG-COA reductase. The drug has a comparatively short biological half-life (1.2 hours) and low bioavailability (24– 29%), making it an appropriate candidate for a sustained-release drug delivery system. This study aimed to formulate biodegradable microspheres of fluvastatin sodium by optimization through an experimental design approach. Microspheres containing fluvastatin sodium were prepared by o/w emulsification solvent evaporation method using poly (lactic-co-glycolic acid) (PLGA 50:50) as a biodegradable polymer. 32 full factorial design was applied to study the effect of drug to polymer ratio and stirring speed on dependent variables, i.e. particle size, entrapment efficiency, Q1h, t80%. Prepared formulations were subjected to evaluate physicochemical properties and release characteristics. DSC and FTIR proved no interaction between the drug and excipients. Microspheres possessed size in the range of 193 to 344 μm and entrapment efficiency varied from 63.1 to 85.6%. Formulations showed drug release up to 23% within 1-hour. while t80% was found in between 3–9 hours. Regression analysis and ANOVA results suggested a significant effect (p<0.05) of variables on responses. The results of the present study suggested that biodegradable microspheres of fluvastatin sodium prepared using poly (lactic-co-glycolic acid) can be a promising alternative for conventional delivery and suitable for sustained drug release.
氟伐他汀钠是一种降血脂药,通过抑制 HMG-COA 还原酶来减少胆固醇的合成。该药物的生物半衰期较短(1.2 小时),生物利用度较低(24-29%),因此是缓释给药系统的合适候选药物。本研究旨在通过实验设计方法优化氟伐他汀钠生物可降解微球的配方。以聚(乳酸-共-乙醇酸)(PLGA 50:50)为生物可降解聚合物,采用油/水乳化溶剂蒸发法制备了含氟伐他汀钠的微球。采用 32 全因子设计研究了药物与聚合物的比例和搅拌速度对因变量(即粒度、包埋效率、Q1h、t80%)的影响。对制备的配方进行了理化性质和释放特性评估。DSC 和 FTIR 证明药物与辅料之间没有相互作用。微球的尺寸在 193 至 344 μm 之间,包埋效率为 63.1% 至 85.6%。制剂在 1 小时内的药物释放率高达 23%,而在 3-9 小时内的释放率为 80%。回归分析和方差分析结果表明,变量对反应有显著影响(p<0.05)。本研究的结果表明,使用聚(乳酸-共聚乙醇酸)制备的氟伐他汀钠生物可降解微球是一种很有前景的传统给药替代品,适合药物的持续释放。
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引用次数: 0
PRELIMINARY INVESTIGATIONS ON DIOSPYROS MALABARICA LEAVES EXTRACTS FOR ANTI-INFLAMMATORY AND WOUND HEALING ACTIVITY 马拉巴里树叶提取物抗炎和伤口愈合活性的初步研究
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150407
P. C. Pradhan, M. Kori
The present study aimed to screen different extracts of Diospyros malabarica leaves for antiinflammatory and wound-healing effect in mice. Phytochemical screening of different extracts i.e. petroleum ether, chloroform, ethyl acetate, ethanol and aqueous extracts, were performed using different chemical test. All extracts were subjected to study antiinflammatory effects using xylene-induced edema and wound healing activity using an incision wound model. Antiinflammatory potential was recorded by observing the mice’s percent inhibition of edema, nitric oxide (NO) estimation, and myeloperoxidase (MPO) action. The wound healing effect was observed by measurement of tensile strength, protein level and hydroxyproline level in the wound tissues. Observation of phytochemical study was confirmed that ethanolic extract of D. malabarica leaves contains glycosides and flavonoids as major chemical constituents. Antiinflammatory effect was confirmed by significant (p<0.05) percent inhibition of ear edema, significant reduction of NO level and MPO level of mice by ethanol extract of D. malabarica leaves. Wound healing potential was observed by the significant increase in tensile strength of wound tissue after treatment with ethanolic extract. A significant (p<0.05) increase in protein and hydroxyproline level of tissue were observed after treatment with ethanolic extract of D. malabarica. In conclusion, the potent antiinflammatory and wound healing effects of ethanolic extract of D. malabarica may be observed due to the presence of glycoside and flavonoid components.
本研究旨在筛选 Diospyros malabarica 叶子的不同提取物对小鼠的消炎和伤口愈合作用。采用不同的化学测试方法对不同提取物(即石油醚、氯仿、乙酸乙酯、乙醇和水提取物)进行了植物化学筛选。使用二甲苯诱导的水肿和切口模型研究了所有提取物的抗炎作用和伤口愈合活性。通过观察小鼠水肿抑制率、一氧化氮(NO)估计值和髓过氧化物酶(MPO)作用,记录抗炎潜力。通过测量伤口组织的抗张强度、蛋白质水平和羟脯氨酸水平,观察伤口愈合效果。植物化学研究观察证实,D. malabarica 叶子的乙醇提取物含有苷类和黄酮类等主要化学成分。草决明叶乙醇提取物对小鼠耳部水肿的抑制率显著(p<0.05),NO 水平和 MPO 水平显著降低,这证实了草决明叶乙醇提取物具有抗炎作用。经乙醇提取物处理后,伤口组织的抗张强度明显增加,从而观察到伤口愈合潜力。用草决明叶乙醇提取物处理后,组织的蛋白质和羟脯氨酸水平明显提高(p<0.05)。总之,D. malabarica乙醇提取物的强效抗炎和伤口愈合作用可能是由于其中含有苷和类黄酮成分。
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引用次数: 0
Controlled Release Matrix Formulation of Paliperidone in Concurrence with Regulatory Requirements 符合法规要求的帕潘立酮控释矩阵制剂
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150405
Deepak Maheshwari, Chetan M. Detroja
Paliperidone is the 9-hydroxy metabolite (9-hydroxy) of risperidone and is a psychotropic drug of the atypical antipsychotic family. Paliperidone has the racemates (+)- and (-)-paliperidone. It is a dopamine D2 antagonist with serotonergic 5-HT2A antagonistic action that acts centrally. ALZA OROS® osmotic medication release technology is used to create Invega ER tablets. It is a tri-layer longitudinally compressed tablet based on a sophisticated osmotic delivery method that is meant to administer the paliperidone in a defined way over 24 hours. This research aims to create a generic controlled-release single-layer matrix tablet of paliperidone. Different combinations of Polyox and hypromellose in the core were used, followed by coating, to assist/build a stable and strong formulation. All strengths have similar in-vitro dissolution profiles. Freeze formulation was assessed for nitrosamine risk assessment as well as challenge for alcohol dose dumping study. Paliperidone is a basic compound with a pKa1 of 8.2 (piperidine moiety) and a pKa2 of 2.6 (pyrimidine moiety). As a result, a substantial portion of the molecule is ionized at physiological pH. It is relatively insoluble in water (0.003 g/100 mL water at pH 7.4). The solubility decreases at higher pH (0.001 g/100 mL at pH 12.9) and significantly increases at lower pH (3 g/100 mL at pH 5.3). The partition coefficient octanol/water (log P) is 2.39. Hence, discriminating media was identified as pH 2.75 buffer. The Higuchi model was used for expressing the in-vitro release profile through matrix composition. Formulation withstands 0–40% alcoholic conditions under in-vitro release tests. It is easy to formulate, stable and cost-effective. The manufacturing process involves dry blending followed by compression and coating so there will be the least chemical interaction of an active substance with other excipients. Hence, there is a negligible possibility to generate nitrosamine impurity in the formulation. The formulation is classified as rugged against dose dumping.
帕潘立酮是利培酮的 9-羟基代谢物(9-羟基),属于非典型抗精神病药物。帕潘立酮有外消旋体(+)-和(-)-帕潘立酮。它是一种多巴胺 D2 拮抗剂,具有血清素能 5-HT2A 拮抗作用,作用于中枢。ALZA OROS® 渗透释药技术用于制造 Invega ER 片剂。它是一种三层纵向压缩片剂,基于一种复杂的渗透给药方法,旨在以明确的方式在 24 小时内给药帕利哌酮。本研究旨在开发一种通用型帕利哌酮控释单层基质片剂。在片芯中使用了不同的聚氧乙烯和低聚果糖组合,然后进行包衣,以帮助/建立一个稳定而坚固的制剂。所有剂型都具有相似的体外溶出曲线。对冷冻制剂进行了亚硝胺风险评估和酒精剂量倾倒研究。帕潘立酮是一种碱性化合物,pKa1 为 8.2(哌啶分子),pKa2 为 2.6(嘧啶分子)。因此,在生理 pH 值下,分子的很大一部分会被电离。它相对不溶于水(pH 值为 7.4 时为 0.003 克/100 毫升水)。pH 值越高,溶解度越低(pH 值为 12.9 时为 0.001 克/100 毫升),pH 值越低,溶解度越高(pH 值为 5.3 时为 3 克/100 毫升)。辛醇/水分配系数(log P)为 2.39。因此,鉴别介质被确定为 pH 值为 2.75 的缓冲液。樋口模型用于通过基质组成来表达体外释放曲线。在体外释放试验中,该制剂可耐受 0-40% 的酒精条件。该制剂易于配制,性质稳定,成本效益高。其生产过程包括干混,然后进行压缩和包衣,因此活性物质与其他辅料的化学作用最小。因此,制剂中产生亚硝胺杂质的可能性微乎其微。该制剂被归类为不易发生剂量倾倒的制剂。
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引用次数: 0
STUDY OF EPIDEMIOLOGY AND ITS PROGNOSTIC FACTORS FOR EXPECTED THERAPEUTIC MANAGEMENT OUTCOME ALONG WITH THE ANTIHYPERTENSIVE DRUG PATTERN FOR PREECLAMPSIA IN RURAL SETTING 研究农村地区先兆子痫的流行病学及其预期治疗管理结果的预后因素以及降压药物模式
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150409
Shreya Singh, Vikas Jogpal, Rashmi Ray, Abhishek Sharma
This study analyses the association between epidemiological factors and preeclampsia and the antihypertensive drug pattern used at different stages of preeclampsia. Total 252 patients were enrolled for study. Some of the study variables were maternal age, history of infertility, family income, education, antihypertensive drug use, body mass index of the mother and baby’s birth weight. The study was performed SGT Hospital, Gurugram and was given ethical clearance by the Institutional Ethical Committee (IEC). Data was collected with the help of validated questionnaires. The occurrence of pregnancy induced hypertension (PIH) in our study was found to be 47.2%. Maternal age, low socioeconomic status, less education level, >36 weeks of gestation are one of some major factors responsible for PIH. The current study implies that different dosage forms of labetalol was prescribed with p-value <0.05.
本研究分析了流行病学因素与子痫前期之间的关系,以及在子痫前期的不同阶段所使用的降压药物模式。共有 252 名患者参与研究。研究变量包括产妇年龄、不孕史、家庭收入、教育程度、抗高血压药物使用情况、产妇体重指数和婴儿出生体重。研究在古鲁格拉姆的 SGT 医院进行,并获得了机构伦理委员会(IEC)的伦理许可。数据通过有效问卷收集。在我们的研究中,妊娠诱发高血压(PIH)的发生率为 47.2%。产妇年龄大、社会经济地位低、受教育程度低、妊娠超过 36 周是导致 PIH 的主要因素之一。本研究表明,不同剂型的拉贝洛尔处方的P值均小于0.05。
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引用次数: 0
Clematis erecta Extract Inhibits Migration, Invasion and Induce Apoptosis in Breast Cancer Cells 直立铁线莲提取物可抑制乳腺癌细胞的迁移、侵袭并诱导其凋亡
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150403
Reena Jassal, Preeti Khetarpal, Suresh Kumar
Migration and invasion of breast cancer cells to distant parts of the body is a hallmark of the disease. The disease becomes difficult to manage and treat with an increased invasion by cancer cells. Some drugs kill the cancer cells but causes general cytotoxicity but no drugs are known to inhibit the invasive potential of cancer cells. Previously, the natural components have been proven to exhibit anticancer and invasive potential. Clematis erecta L. (Ranunculaceae) Leaves infusion is traditionally used to treat syphilitic, cancerous and other foul ulcers. Moreover, methanolic extract and and ethyl acetate fraction exhibited significant analgesic and anti-inflammatory activity. The scientific literature still lacks support for the anticancer potential of C. erecta. Therefore, it was envisaged to investigate the anticancer activities of C. erecta aerial parts on breast cancer cells. The results obtained suggest that C. erecta has anti-invasive potential on triple-negative human breast cancer cells (MDA-MB-231). Three different extracts (chloroform, methanol and water) of aerial parts of C. erecta were evaluated for their effect on the growth and migration of human breast cancer cells MDA-MB-231. Interestingly, aqueous extract inhibits cell growth by more than 50% and also inhibits migration and invasion by 40 and 50%, respectively. DNA fragmentation of extract treated cells further suggested that C. erecta has the potential to kill cancer cells.
乳腺癌细胞向身体远处迁移和入侵是这种疾病的特征。随着癌细胞入侵的增加,这种疾病变得难以控制和治疗。有些药物能杀死癌细胞,但会引起一般细胞毒性,但目前还没有药物能抑制癌细胞的侵袭潜力。此前,天然成分已被证明具有抗癌和侵袭潜力。铁线莲(Ranunculaceae)叶浸液传统上用于治疗梅毒、癌症和其他恶性溃疡。此外,甲醇提取物和乙酸乙酯馏分具有显著的镇痛和抗炎活性。科学文献仍然缺乏对直立花抗癌潜力的支持。因此,我们设想研究直立花茎叶对乳腺癌细胞的抗癌活性。研究结果表明,直立草对三阴性人类乳腺癌细胞(MDA-MB-231)具有抗侵袭潜力。研究人员评估了直立草叶气生部分的三种不同提取物(氯仿、甲醇和水)对人类乳腺癌细胞 MDA-MB-231 的生长和迁移的影响。有趣的是,水提取物对细胞生长的抑制率超过 50%,对迁移和侵袭的抑制率分别为 40% 和 50%。提取物处理过的细胞的 DNA 断裂进一步表明直立花具有杀死癌细胞的潜力。
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引用次数: 0
Topical Delivery of Eberconazole Nitrate Loaded Microemulsion: Formulation, Design and Evaluation 硝酸依柏康唑微乳剂的局部给药:配方、设计和评估
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150412
Nidhi Shah, Khushbu Patel, Indrajeet Singhvi
The objective of the present research work was to develop a microemulsion for the transdermal delivery of eberconazole nitrate (EBZ). Initially, oil, surfactant and co-surfactant were selected based on their solubility and emulsification study. A pseudoternary phase diagram was constructed to optimize the surfactant-co surfactant (Smix) ratio. Eberconazole nitrate (EBZ) loaded microemulsion was optimized using central composite design (CCD) with amount of Capmul MCM (X1), tween 80 (X2) and transcutol (X3) as independent variables along with the cumulative amount of drug release (Q24) (Y1), flux (Jss) (Y2) and lag time (tL) (Y3) as dependent variables. Drug release study of all the design batches showed successfully increased permeation of drug which might be due to the compositional characteristics of ME. The globule size of the optimized batch of EBZ loaded ME (153.6 nm) confirms the micrometer size of the formulation. Zeta potential and polydispersity index (PDI) of the optimized batch was found to be -30.5 mV and 0.253, respectively, proving stability and uniform distribution of dispersed systems. The optimized batch of MEs has a pH value of 6.96 ± 0.21, indicating no chance of skin irritation. Further morphological and structural examination of the optimized batch of EBZ loaded ME was done by transmission electron microscope (TEM) and images illustrated the spherical micelles with size range of 100 to 200 nm which evidently may support the high absorption and results into the enhancement of drug permeation which may increase the therapeutic effect, decrease the dose frequency and improving the patience compliance for topical drug delivery.
本研究工作的目的是开发一种用于硝酸依康唑(EBZ)透皮给药的微乳剂。最初,根据油、表面活性剂和辅助表面活性剂的溶解性和乳化研究,对它们进行了选择。为了优化表面活性剂与辅助表面活性剂(Smix)的比例,构建了一个假三元相图。以 Capmul MCM(X1)、吐温 80(X2)和 transcutol(X3)的用量为自变量,以药物释放累积量(Q24)(Y1)、通量(Jss)(Y2)和滞后时间(tL)(Y3)为因变量,采用中心复合设计(CCD)对负载硝酸依康唑(EBZ)的微乳剂进行了优化。所有设计批次的药物释放研究均显示药物渗透性成功增加,这可能与 ME 的成分特性有关。优化批次的 EBZ 负载 ME 的球形尺寸(153.6 nm)证实了制剂的微米尺寸。优化批次的 Zeta 电位和多分散指数(PDI)分别为 -30.5 mV 和 0.253,证明了分散体系的稳定性和均匀分布。优化批次 ME 的 pH 值为 6.96 ± 0.21,表明不会对皮肤产生刺激。透射电子显微镜(TEM)对优化批次的 EBZ 负载 ME 进行了进一步的形态和结构检查,图像显示其为球形胶束,尺寸范围为 100 至 200 nm。
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引用次数: 0
A Review on Biomarkers for Predicting Radioresistance and Role of Natural Radiosensitizers in Triple-Negative Breast Cancer 预测三阴性乳腺癌耐药性的生物标志物及天然放射增敏剂的作用综述
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150418
Devashish Mehta, Jpan G. Brahmbhatt, Kinjal Bhadresha, Rakesh Rawal
Breast cancer mortality rate is fifth among all cancer and increasing day by day due to modern lifestyles. Its molecular subtype is classified as per their significant receptor expression, such as estrogen receptor (ER), progesterone receptor (PR) & human epidermal growth receptor 2 (Her2). Triple-negative breast cancer (TNBC) is an aggressive subgroup among breast cancer subtypes and clinically challenging to treat due to loss of all three receptor (ER/PR/Her2) expression. Treatment modalities of TNBC include surgery, chemotherapy, radiotherapy and immunotherapy. Postoperative radiation therapy (RT) improves locoregional control and overall survival in TNBC patients. The powerful ionizing radiation (IR) response to RT is contributed by the inherent radiosensitivity of the tumor, which is influenced by genes associated with the cell cycle, DNA damage repair, apoptosis, etc. This review article narrates the role of biomarkers obtained through data mining and manual curation of published literature to predict radioresistance in patients receiving radiotherapy. Further, the role of natural radiosensitizers in overcoming radioresistance for effectively managing TNBC is also discussed.
由于现代生活方式的影响,乳腺癌的死亡率在所有癌症中排名第五,并且与日俱增。乳腺癌的分子亚型根据其重要受体的表达情况进行分类,如雌激素受体(ER)、孕酮受体(PR)和人类表皮生长受体 2(Her2)。三阴性乳腺癌(TNBC)是乳腺癌亚型中的一种侵袭性亚型,由于失去了三种受体(ER/PR/Her2)的表达,临床治疗具有挑战性。TNBC 的治疗方法包括手术、化疗、放疗和免疫疗法。术后放疗(RT)可提高 TNBC 患者的局部控制率和总生存率。肿瘤对电离辐射(IR)的强大反应是由肿瘤固有的放射敏感性促成的,而放射敏感性则受细胞周期、DNA损伤修复、细胞凋亡等相关基因的影响。这篇综述文章阐述了通过数据挖掘和人工整理已发表文献获得的生物标志物在预测接受放疗患者放射抗性方面的作用。此外,文章还讨论了天然放射增敏剂在克服放射抗性以有效治疗 TNBC 方面的作用。
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引用次数: 0
ANTI-DENGUE LEADS FROM CAESALPINIA BONDUC - AN IN SILICO APPROACH 从 Caesalpinia Bonduc 中提取抗登革热线索--一种硅学方法
Pub Date : 2023-08-25 DOI: 10.25004/ijpsdr.2023.150408
Charuvil K Biju, Radha K Lekshmi, Sivanandan Sreekumar
Dengue (breakbone fever) is a rapidly spreading arboviral infection transmitted by Aedes mosquitoes with major public health implications in more than 100 tropical and subtropical countries mostly in Southeast Asia, South and Central America and the Western Pacific. As the virus spreads to new geographic areas, more frequent dengue outbreaks occur in different parts of the world. Fifty million cases of dengue occur worldwide each year, of which 10% require hospitalization for dengue hemorrhagic fever (DHF). It is a shocking truth that more than 90% of these are children under the age of five. The mortality rate is also significant as 2.5% die from dengue. Currently, there is no effective vaccine or specific drug for Dengue/DHF. Pharmaceutical manufacturers have turned their attention to plant-based drug candidates to produce effective drugs. Following the study investigated the active phytochemicals in the medicinal plant Caesalpinia bonduc (L.) Roxb. through docking simulation. Dengue virus non-structural protein five (NS5) and human IMPDH-II were used here as targets for docking with plant compounds. Docking results revealed that 33 compounds out of 82 phytochemicals showed better binding affinity than the native ligands of the targets. Compounds exhibiting the lowest free energy levels were further screened after studying their pharmacokinetics, medicinal chemistry friendliness, lead-likeness, and toxicity prediction to identify lead molecules. At the end of the study, three compounds, Caesaldekarin A, Caesalpinin F and Taepeenin D, which potently inhibited both targets, were selected here for further ‘in-vitro’ and ‘in-vivo’ studies.
登革热(断骨热)是一种由伊蚊传播的迅速蔓延的虫媒病毒感染,对 100 多个热带和亚热带国家(主要是东南亚、南美洲、中美洲和西太平洋国家)的公共卫生有重大影响。随着病毒传播到新的地理区域,登革热在世界各地的爆发更加频繁。全世界每年发生 5 000 万例登革热病例,其中 10%需要住院治疗登革出血热(DHF)。令人震惊的是,其中 90% 以上是 5 岁以下的儿童。死亡率也很高,2.5%的人死于登革热。目前,登革热/DHF 还没有有效的疫苗或特效药。制药商已将注意力转向植物性候选药物,以生产有效的药物。本研究通过对接模拟研究了药用植物 Caesalpinia bonduc (L.) Roxb.中的活性植物化学物质。登革病毒非结构蛋白五(NS5)和人类 IMPDH-II 被用作与植物化合物对接的靶标。对接结果显示,82 种植物化合物中有 33 种化合物的结合亲和力优于靶标的原生配体。在研究了自由能水平最低的化合物的药代动力学、药物化学友好性、先导相似性和毒性预测后,进一步筛选出先导分子。最后,研究人员选择了对两个靶标都有强效抑制作用的三个化合物,即 Caesaldekarin A、Caesalpinin F 和 Taepeenin D,并在此基础上进行了进一步的 "体外 "和 "体内 "研究。
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International Journal of Pharmaceutical Sciences and Drug Research
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