Ketoprofen

酮洛芬
  • 文章类型: Journal Article
    目的:评估和比较地塞米松的效果,酮洛芬和冷敷对手术切除受影响的下第三磨牙(ILTMs)后的生活质量(QoL)。
    方法:招募需要ILTM提取的合格患者,其改良的Pederson难度指数评分为5-6。将患者随机分为A组,B和C组分别口服100毫克酮洛芬和8毫克地塞米松,术前。B组的受试者在术后6小时内将预先标准化的冰袋应用于下颌骨的角度。QoL问卷在术后第1、2和7天进行。
    结果:总计,78名受试者完成了研究:46名(59%)为男性,平均年龄为27.8±4.9岁。两组在社会人口统计学上相似。术后第1天口服地塞米松的患者的总体QoL和外观领域评分明显优于其他组。
    结论:与冰袋和酮洛芬相比,口服地塞米松在ILTM手术后第1天的术后QoL和外观上显示出更好的改善。虽然冰袋很容易买到,可以重复使用,是一种低成本的选择,需要更多的研究来确定其在门诊环境中的最佳治疗用途.
    结论:在改善ILTM手术的术后生活质量方面,口服地塞米松优于冰袋压缩和酮洛芬。
    PACTR202005593102009,泛非临床试验注册。
    OBJECTIVE: To evaluate and compare the effect of dexamethasone, ketoprofen and cold compress on the quality of life (QoL) following surgical removal of impacted lower third molars (ILTMs).
    METHODS: Eligible patients requiring ILTM extraction with a modified Pederson difficulty index score of 5-6 were recruited. The patients were randomly allocated into Groups A, B and C. Groups A and C received 100 mg of ketoprofen and 8 mg of dexamethasone per-oral respectively, preoperatively. Subjects in group B applied a pre-standardized ice pack over the angle of the mandible for 6 h postoperatively. The QoL questionnaire was administered on postoperative days 1, 2 and 7.
    RESULTS: In total, seventy-eight subjects completed the study: 46 (59%) were male and had a mean age of 27.8 ± 4.9 years. The groups were similar sociodemographically. The overall QoL and appearance domain score were significantly better in patients on oral dexamethasone on postoperative day 1 than in the other groups.
    CONCLUSIONS: Oral dexamethasone demonstrates better improvement in postoperative QoL and appearance on day 1 following ILTM surgery compared to ice packs and ketoprofen. Although ice packs are readily available, can be used repeatedly and are a low-cost option, more research is necessary to determine their optimum therapeutic use in outpatient settings.
    CONCLUSIONS: Oral dexamethasone is superior to ice pack compress and ketoprofen in improving the postoperative QoL in ILTM surgery.
    UNASSIGNED: PACTR202005593102009 at Pan African Clinical Trial Registry.
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  • 文章类型: Journal Article
    对水生和陆生生物的污染和毒性的日益关注主要是由于水生暴露引起的,并对环境系统和人类健康构成风险。这项研究解决了镉(Cd)和酮洛芬(KPF)的共同毒性作用,代表重金属和药品排放污染物,分别,在水生生态系统中。使用斑马鱼胚胎进行了96小时的急性毒性评估。结果表明,高剂量的KPF(10、15和100µg/mL)和Cd(10和15µg/mL)会降低生存能力,并导致浓度依赖性畸形,例如脊柱侧凸和卵黄囊水肿。这些发现突出了发育和新陈代谢的潜在缺陷,溶血试验证明了对血细胞完整性的剂量依赖性影响。此外,这项研究使用成年斑马鱼对Cd和KPF(10和100µg/L)单独或组合(1010和100100µg/L)进行42天的慢性暴露,以评估组织样本中器官特异性Cd和KPF的积累。器官特异性积累模式强调了影响呼吸的复杂相互作用,新陈代谢,和排毒功能。长时间暴露会诱导活性氧的形成,损害抗氧化剂防御系统。组织学检查揭示了g的结构变化,胃肠,肾,和肝脏组织,提示呼吸损伤,渗透调节,营养,和免疫功能。这项研究强调了对共同毒性效应进行广泛研究的重要性,以协助进行环境风险评估并保护人类健康和水生生态系统。
    The growing concern about pollution and toxicity in aquatic as well as terrestrial organisms is predominantly caused due to waterborne exposure and poses a risk to environmental systems and human health. This study addresses the co-toxic effects of cadmium (Cd) and ketoprofen (KPF), representing heavy metal and pharmaceutical discharge pollutants, respectively, in aquatic ecosystems. A 96-h acute toxicity assessment was conducted using zebrafish embryos. The results indicated that high dosages of KPF (10, 15, and 100 µg/mL) and Cd (10 and 15 µg/mL) reduced survivability and caused concentration-dependent deformities such as scoliosis and yolk sac edema. These findings highlight the potential defects in development and metabolism, as evidenced by hemolysis tests demonstrating dose-dependent effects on blood cell integrity. Furthermore, this study employs adult zebrafish for a 42-day chronic exposure to Cd and KPF (10 and 100 µg/L) alone or combined (10 + 10 and 100 + 100 µg/L) to assess organ-specific Cd and KPF accumulation in tissue samples. Organ-specific accumulation patterns underscore complex interactions impacting respiratory, metabolic, and detoxification functions. Prolonged exposure induces reactive oxygen species formation, compromising antioxidant defense systems. Histological examinations reveal structural changes in gills, gastrointestinal, kidney, and liver tissues, suggesting impairments in respiratory, osmoregulatory, nutritional, and immune functions. This study emphasizes the importance of conducting extensive research on co-toxic effects to assist with environmental risk assessments and safeguard human health and aquatic ecosystems.
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  • 文章类型: Journal Article
    背景:肌肉骨骼疾病是缺勤的重要原因。临床实践指南建议使用非甾体抗炎药(NSAIDs)治疗I-II级宫颈扭伤。已经使用了硫胺素+吡哆醇+氰钴胺维生素的组合,单独和与NSAIDs联合使用,肌肉骨骼疾病的疼痛和炎症。
    目的:本研究的目的是证明右酮洛芬的镇痛协同作用,和维生素硫胺素+吡哆醇+氰钴胺的组合在固定剂量组合(FDC)中用于治疗由I-II级宫颈扭伤引起的急性疼痛。
    方法:我们进行了多中心,prospective,随机化,双盲,IIIb期临床研究比较两个治疗组:(1)右酮洛芬25毫克/维生素B(硫胺素100毫克,吡哆醇50mg和氰钴胺0.50mg)在FDC(两种或更多种活性成分组合在一个单一的剂型)与(2)右酮洛芬25mg单药治疗(单一药物治疗特定的疾病),口服一个胶囊或片剂,每8小时7天。最终意味着,平均变化,和疼痛感知的百分比变化(使用视觉模拟评分[VAS]测量)与基线进行比较。P值<0.05被认为是统计学上显著的。使用SPSS软件进行分析,v.29.0.
    结果:与单药治疗相比,从FDC治疗的第三天开始观察到疼痛强度的统计学显着降低(-3.1±-1.5和-2.6±-1.1cm,分别)使用VAS(p=0.011)测量。关于残疾程度,使用NorthwickPark颈部疼痛问卷(NPQ),在最终测量中观察到统计学差异(7.5%,四分位数间距[IQR]2.5,10.5;vs.7.9%,IQR5.0,13.8;p=0.028)。使用FDC时报告的不良事件比例较低。
    结论:右酮洛芬/硫胺素+吡哆醇+氰钴胺维生素的FDC与右酮洛芬单药治疗I-II级宫颈扭伤患者的疼痛相比,显示出更好的疗效和更好的安全性。
    背景:NCT05001555,注册于2021年7月29日(https://clinicaltrials.gov/study/NCT05001555)。
    BACKGROUND: Musculoskeletal disorders are an important cause of work absence. Clinical practice guidelines recommend nonsteroidal anti-inflammatory drugs (NSAIDs) for grade I-II cervical sprains. The combination of thiamine + pyridoxine + cyanocobalamin vitamins has been used, alone and in combination with NSAIDs, for pain and inflammation in musculoskeletal disorders.
    OBJECTIVE: The objective of this study was to demonstrate the analgesic synergy of dexketoprofen, and the combination of vitamins thiamine + pyridoxine + cyanocobalamin in a fixed-dose combination (FDC) for the treatment of acute pain caused by grade I-II cervical sprains.
    METHODS: We conducted a multicentre, prospective, randomized, double-blind, phase IIIb clinical study comparing two treatment groups: (1) dexketoprofen 25 mg/vitamin B (thiamine 100 mg, pyridoxine 50 mg and cyanocobalamin 0.50 mg) in an FDC (two or more active ingredients combined in a single dosage form) versus (2) dexketoprofen 25 mg monotherapy (single drug to treat a particular disease), one capsule or tablet orally, every 8 h for 7 days. Final mean, average change, and percentage change in pain perception (measured using a visual analogue scale [VAS]) were compared with baseline between groups. A p value < 0.05 was considered statistically significant. Analyses were conducted using SPSS software, v.29.0.
    RESULTS: A statistically significant reduction in pain intensity was observed from the third day of treatment with the FDC compared with monotherapy (- 3.1 ± - 1.5 and - 2.6 ± - 1.1 cm, respectively) measured using the VAS (p = 0.011). Regarding the degree of disability, using the Northwick Park Neck Pain Questionnaire (NPQ), statistical difference was observed for the final measurement (7.5%, interquartile range [IQR] 2.5, 10.5; vs. 7.9%, IQR 5.0, 13.8; p = 0.028). A lower proportion of adverse events was reported when using the FDC.
    CONCLUSIONS: The FDC of dexketoprofen/thiamine + pyridoxine + cyanocobalamin vitamins demonstrated superior efficacy and a better safety profile compared with dexketoprofen monotherapy for pain treatment in patients with grade I-II cervical sprains.
    BACKGROUND: NCT05001555, registered 29 July 2021 ( https://clinicaltrials.gov/study/NCT05001555 ).
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  • 文章类型: Journal Article
    紧张型头痛是最常见的原发性头痛类型,并导致巨大的社会经济负担。此网络荟萃分析(NMA)旨在比较简单镇痛药治疗成人发作性紧张型头痛(ETTH)的疗效和安全性。
    我们搜索了Cochrane图书馆,PubMed,WebofScience,Embase,中国生物医学文献数据库和国际临床试验注册平台数据库,用于报告简单镇痛药的疗效和/或安全性的合格随机临床试验。进行贝叶斯NMA以比较相对疗效和安全性。计算累积排序曲线(SUCRA)下的表面以对干预进行排序。PROSPERO注册号:CRD42018090554。
    我们强调了六项研究,包括3507名患者。对于2小时无痛率,SUCRA排名为布洛芬>双氯芬酸-K>酮洛芬>对乙酰氨基酚>萘普生>安慰剂。除萘普生外,所有药物均报告2h无痛率高于安慰剂,风险比(RR)为2.86(95%可信区间,CRI:布洛芬为1.62-5.42),双氯芬酸为2.61(1.53-4.88)。对于不良事件发生率,SUCRA排名为:安乃近>双氯芬酸-K>布洛芬>lumiracoxib>安慰剂>阿司匹林>对乙酰氨基酚>萘普生>酮洛芬。所有镇痛药的不良事件发生率均不高于安慰剂,除了酮洛芬.此外,在全球疗效评估中,所有药物均优于安慰剂.特别是,lumiracxib的RR为2.47(1.57-4.57)。研究之间的全球异质性I2较低。
    作为成人ETTH的安慰剂,简单的镇痛药被认为更有效和安全。我们的结果表明,布洛芬和双氯芬酸-K可能是ETTH患者的两种最佳治疗选择(均为高质量证据)。
    据我们所知,这是首次网络荟萃分析,比较了使用本指南推荐的不同简单镇痛药治疗的阵发性紧张型头痛(ETTH)成年患者的现有数据.布洛芬(400毫克)和双氯芬酸K(12.5毫克,25毫克)可能是最有效和安全的治疗选择,有高质量证据支持。
    UNASSIGNED: Tension-type headache is the most common type of primary headache and results in a huge socioeconomic burden. This network meta-analysis (NMA) aimed to compare the efficacy and safety of simple analgesics for the treatment of episodic tension-type headache (ETTH) in adults.
    UNASSIGNED: We searched the Cochrane Library, PubMed, Web of Science, Embase, Chinese BioMedical Literature database and International Clinical Trials Registry Platform databases for eligible randomized clinical trials reporting the efficacy and/or safety of simple analgesics. A Bayesian NMA was performed to compare relative efficacy and safety. The surface under the cumulative ranking curve (SUCRA) was calculated to rank interventions. PROSPERO registration number: CRD42018090554.
    UNASSIGNED: We highlighted six studies including 3507 patients. For the 2 h pain-free rate, the SUCRA ranking was ibuprofen > diclofenac-K > ketoprofen > acetaminophen > naproxen > placebo. All drugs except naproxen reported a higher 2 h pain-free rate than placebo, with a risk ratio (RR) of 2.86 (95% credible interval, CrI: 1.62-5.42) for ibuprofen and 2.61 (1.53-4.88) for diclofenac-K. For adverse events rate, the SUCRA ranking was: metamizol > diclofenac-K > ibuprofen > lumiracoxib > placebo > aspirin > acetaminophen > naproxen > ketoprofen. The adverse event rates of all analgesics were no higher than those of placebo, except for ketoprofen. Moreover, all drugs were superior to placebo in the global assessment of efficacy. In particular, the RR of lumiracoxib was 2.47 (1.57-4.57). Global heterogeneity I2 between the studies was low.
    UNASSIGNED: Simple analgesics are considered more effective and safe as a placebo for ETTH in adults. Our results suggest that ibuprofen and diclofenac-K may be the two best treatment options for patients with ETTH from a comprehensive point of view (both high-quality evidence).
    To our knowledge, this is the first network meta-analysis comparing the available data on adult patients with episodic tension-type headache (ETTH) treated with different simple analgesics recommended by the current guidelines.Ibuprofen (400 mg) and diclofenac-K (12.5 mg, 25 mg) are potentially the most effective and safe treatment options, supported by high-quality evidence.
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  • 文章类型: Journal Article
    非甾体抗炎药(NSAIDs)是全世界使用最广泛的药物之一。除了他们公认的抗炎作用,这些药物在几种细胞中表现出各种其他多效性作用,包括血小板。在这篇文章中,非甾体抗炎药对血小板功能的多方面特性,激活和活力,以及它们与既定的抗血小板药物的相互作用,通过阻碍几种血小板激动剂途径和受体,经过全面审查。还讨论了NSAIDs作为涉及炎症和血小板活化的病症的辅助疗法的有效性和安全性。重点是常用NSAIDs药物的抗血小板潜能,比如布洛芬,双氯芬酸,萘普生和酮洛芬,除了非阿片类镇痛药和解热药物,如扑热息痛。本文探讨了它们对抗不同血小板活化途径的作用机制。聚集和总体血小板功能,强调这些抗炎和镇痛剂的其他健康促进特性,不忽视这些药物对血小板功能的副作用和血小板减少症。还讨论了这些药物不断增加的订阅所带来的环境问题,以及对新型水处理方法的需求,以从水和废水样品中适当消除它们。尽管有时在废水处理过程中被有效地消除,非甾体抗炎药仍然很普遍,在接收污水处理厂(WWTP)废水的水体中浓度很高,由于没有一种万能的解决方案来去除废水中的所有污染物,取决于废水的具体特征。已经研究了几种新方法,与吸附被建议作为一种经济有效和环境友好的方法,用于从这些药物中净化废水。本文还提出了关于观察到的NSAIDs抗血小板作用的局限性和未来前景。以及这些化合物的新型衍生物的潜力,与其他重要的血小板功能的好处。
    Non-steroidal anti-inflammatory drugs (NSAIDs) are among the most widely utilized pharmaceuticals worldwide. Besides their recognized anti-inflammatory effects, these drugs exhibit various other pleiotropic effects in several cells, including platelets. Within this article, the multifaceted properties of NSAIDs on platelet functions, activation and viability, as well as their interaction(s) with established antiplatelet medications, by hindering several platelet agonists\' pathways and receptors, are thoroughly reviewed. The efficacy and safety of NSAIDs as adjunctive therapies for conditions involving inflammation and platelet activation are also discussed. Emphasis is given to the antiplatelet potential of commonly administered NSAIDs medications, such as ibuprofen, diclofenac, naproxen and ketoprofen, alongside non-opioid analgesic and antipyretic medications like paracetamol. This article delves into their mechanisms of action against different pathways of platelet activation, aggregation and overall platelet functions, highlighting additional health-promoting properties of these anti-inflammatory and analgesic agents, without neglecting the induced by these drugs\' side-effects on platelets\' functionality and thrombocytopenia. Environmental issues emerging from the ever-increased subscription of these drugs are also discussed, along with the need for novel water treatment methodologies for their appropriate elimination from water and wastewater samples. Despite being efficiently eliminated during wastewater treatment processes on occasion, NSAIDs remain prevalent and are found at significant concentrations in water bodies that receive effluents from wastewater treatment plants (WWTPs), since there is no one-size-fits-all solution for removing all contaminants from wastewater, depending on the specific characteristics of the wastewater. Several novel methods have been studied, with adsorption being proposed as a cost-effective and environmentally friendly method for wastewater purification from such drugs. This article also presents limitations and future prospects regarding the observed antiplatelet effects of NSAIDs, as well as the potential of novel derivatives of these compounds, with benefits in other important platelet functions.
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  • 文章类型: Journal Article
    背景技术深共熔溶剂(DES)通常在药物应用中用作活性物质的优异增溶剂。本研究利用含有氯化胆碱或甜菜碱作为氢键受体和各种多元醇(乙二醇,二甘醇,三甘醇,甘油,1,2-丙二醇,1,3-丁二醇)作为氢键供体。收集所有DES系统的实验溶解度数据。使用COSMO-RS分子描述符开发了机器学习模型来预测溶解度。所有研究的DES都表现出共同偿付能力效应,在适度浓度的水中增加药物的溶解度。该模型准确预测了布洛芬的溶解度,酮洛芬,和相关类似物(氟比洛芬,Felbinac,苯乙酸,二苯基乙酸)。利用COSMO-RS描述符的机器学习方法能够实现DES制剂的合理设计和溶解度预测,以改善药物应用。
    Deep eutectic solvents (DESs) are commonly used in pharmaceutical applications as excellent solubilizers of active substances. This study investigated the tuning of ibuprofen and ketoprofen solubility utilizing DESs containing choline chloride or betaine as hydrogen bond acceptors and various polyols (ethylene glycol, diethylene glycol, triethylene glycol, glycerol, 1,2-propanediol, 1,3-butanediol) as hydrogen bond donors. Experimental solubility data were collected for all DES systems. A machine learning model was developed using COSMO-RS molecular descriptors to predict solubility. All studied DESs exhibited a cosolvency effect, increasing drug solubility at modest concentrations of water. The model accurately predicted solubility for ibuprofen, ketoprofen, and related analogs (flurbiprofen, felbinac, phenylacetic acid, diphenylacetic acid). A machine learning approach utilizing COSMO-RS descriptors enables the rational design and solubility prediction of DES formulations for improved pharmaceutical applications.
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  • 文章类型: Journal Article
    在这项工作中,新配体3,3'-bis[N,报道了N-双(吡啶-2-基甲基)氨基甲基]-2,2'-二羟基联苯(L),其中中心2,2'-联苯酚(BPH)荧光团在3,3'-位置被官能化,两个吡啶甲基胺(DPA)侧臂作为受体单位。在合成和完整的化学物理表征之后,通过电位法研究了L的酸碱和Zn2-配位能力,UV-Vis,荧光,NMR,XRD和DFT测量。配体的光学性质强烈依赖于pH,与BPH部分的质子化状态直接相关,而其独特的设计允许形成稳定的单核和双核Zn2配合物。在后一种物种中,存在两个配位不饱和的Zn2+离子,并且彼此近距离放置,促使我们测试它们作为两种非常相关的环境污染物的金属受体的有用性,布洛芬和酮洛芬。电位和荧光研究表明,这些重要的非甾体抗炎药(NSAIDs)是由金属受体有效协调,相关性,所得到的三元加合物的稳定性和荧光性质都受到两种底物的不同化学结构的显著影响。这项研究旨在强调使用多氨基酚类配体作为金属络合形式的H/Zn2和其他其他阴离子靶标的化学传感器所产生的有希望的观点。
    In this work, the study of the new ligand 3,3\'-bis[N,N-bis(pyridine-2-ylmethyl)aminomethyl]-2,2\'-dihydroxybiphenyl (L) is reported, where a central 2,2\'-biphenol (BPH) fluorophore was functionalized at 3,3\'-positions with two dipicolylamine (DPA) side arms as receptor units. Following the synthesis and full chemical-physical characterization, the acid-base and Zn2+-coordination abilities of L were investigated through a combination of potentiometric, UV-Vis, fluorescence, NMR, XRD and DFT measurements. The optical properties of the ligand turned out to be strongly dependent on the pH, being straightforwardly associated with the protonation state of the BPH moiety, whereas its peculiar design allowed to form stable mono and dinuclear Zn2+ complexes. In the latter species, the presence of two Zn2+ ions coordinatively unsaturated and placed at close distance to each other, prompted us to test their usefulness as metallo-receptors for two environmental pollutants of great relevance, ibuprofen and ketoprofen. Potentiometric and fluorescence investigations evidenced that these important non-steroidal anti-inflammatory drugs (NSAIDs) are effectively coordinated by the metallo-receptors and, of relevance, both the stability and the fluorescence properties of the resulting ternary adducts are markedly affected by the different chemical architectures of the two substrates. This study aims at highlighting the promising perspectives arising from the use of polyamino phenolic ligands as chemosensors for H+/Zn2+ and other additional anionic targets in their metal-complexed forms.
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  • 文章类型: Journal Article
    本研究通过调查3D打印剂型的利用来探索个性化医疗的领域,特别是针对患者特定的肠溶胶囊,设计用于酮洛芬的调节释放,作为示范药物。该研究调查了两种不同的情况:从羟丙基甲基纤维素邻苯二甲酸酯制成的3D打印胶囊中药物释放的改变:聚乙二醇(HPMCP:PEG)和聚(乙烯醇)(PVA),为pH敏感性和延迟释放模式量身定制,分别。此外,开发了一种基于石榴籽油(PSO)的新型酮洛芬自纳米乳化给药系统(SNEDDS),characterized,并用作胶囊的填充材料。通过热熔挤出法制备和表征HPMCP:PEG基长丝,这项研究彻底调查了它的热和机械性能。值得注意的是,体外药物释放分析揭示了酮洛芬释放之间复杂的相互作用,聚合物类型,和胶囊厚度。此外,将酮洛芬掺入SNEDDS中表现出其体外环氧化酶2(COX-2)抑制活性的增强。这些发现共同强调了3D打印在塑造定制药物输送系统方面的潜力。从而为个性化医疗的进步做出了重大贡献。
    This study explores the realm of personalized medicine by investigating the utilization of 3D-printed dosage forms, specifically focusing on patient-specific enteric capsules designed for the modified release of ketoprofen, serving as a model drug. The research investigates two distinct scenarios: the modification of drug release from 3D-printed capsules crafted from hydroxypropyl methylcellulose phthalate:polyethylene glycol (HPMCP:PEG) and poly(vinyl alcohol) (PVA), tailored for pH sensitivity and delayed release modes, respectively. Additionally, a novel ketoprofen-loaded self-nanoemulsifying drug delivery system (SNEDDS) based on pomegranate seed oil (PSO) was developed, characterized, and employed as a fill material for the capsules. Through the preparation and characterization of the HPMCP:PEG based filament via the hot-melt extrusion method, the study thoroughly investigated its thermal and mechanical properties. Notably, the in vitro drug release analysis unveiled the intricate interplay between ketoprofen release, polymer type, and capsule thickness. Furthermore, the incorporation of ketoprofen into the SNEDDS exhibited an enhancement in its in vitro cylooxygenase-2 (COX-2) inhibitory activity. These findings collectively underscore the potential of 3D printing in shaping tailored drug delivery systems, thereby contributing significantly to the advancement of personalized medicine.
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  • 文章类型: Journal Article
    氟西汀(抗抑郁药)和酮洛芬(镇痛药)对水生生态系统的影响在很大程度上是未知的,特别是作为混合物。这项工作旨在确定亚致死浓度的两种化合物单独(0.050mg/L)和它们的混合物(每个0.025mg/L)对水生群落的影响,在一个微观尺度上持续14天。监测几个物理化学参数以估计生态系统中的功能变化,而模式生物(大型蚤,Lemnasp.,Raphidocelissubcapitata)和16S/18SrRNA基因的测序允许确定对特定种群和群落组成变化的影响,分别。14d后更清楚地观察到扰动,总的来说,含有氟西汀(单独或与酮洛芬联合使用)的微观世界对大多数物理化学和生物学变量产生了较大的改变,与仅含酮洛芬的微观世界相比,经历了不那么严重的变化。氮物种的差异表明,由于氟西汀的存在,N循环发生了变化;类似地,所有含药物的系统都降低了D.magna的繁殖率,而单个化合物抑制了Lemnasp的生长。没有观察到明显的趋势,由叶绿素定量间接确定。在含有氟西汀的系统中,微真核生物群落的结构发生了改变,而细菌群落的结构在更大程度上受到混合物的影响。对微观世界平衡的破坏表明了这些化合物对水生生态系统造成的生态风险。
    The effects of fluoxetine (antidepressant) and ketoprofen (analgesic) on aquatic ecosystems are largely unknown, particularly as a mixture. This work aimed at determining the effect of sublethal concentrations of both compounds individually (0.050 mg/L) and their mixture (0.025 mg/L each) on aquatic communities at a microcosm scale for a period of 14 d. Several physicochemical parameters were monitored to estimate functional alterations in the ecosystem, while model organisms (Daphnia magna, Lemna sp., Raphidocelis subcapitata) and the sequencing of 16S/18S rRNA genes permitted to determine effects on specific populations and changes in community composition, respectively. Disturbances were more clearly observed after 14 d, and overall, the microcosms containing fluoxetine (alone or in combination with ketoprofen) produced larger alterations on most physicochemical and biological variables, compared to the microcosm containing only ketoprofen, which suffered less severe changes. Differences in nitrogen species suggest alterations in the N-cycle due to the presence of fluoxetine; similarly, all pharmaceutical-containing systems decreased the brood rate of D. magna, while individual compounds inhibited the growth of Lemna sp. No clear trends were observed regarding R. subcapitata, as indirectly determined by chlorophyll quantification. The structure of micro-eukaryotic communities was altered in the fluoxetine-containing systems, whereas the structure of bacterial communities was affected to a greater extent by the mixture. The disruptions to the equilibrium of the microcosm demonstrate the ecological risk these compounds pose to aquatic ecosystems.
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  • 文章类型: Journal Article
    非甾体抗炎药(NSAIDs)的分子结构各不相同,但大多数含有羧酸官能团(RCOOH)。已知该官能团与环氧合酶抑制的机制有关,并且还引起副作用,如消化道出血。这项研究提出了RCOOH在NSAIDs中的新作用:促进血清白蛋白结合位点II的相互作用。我们使用牛血清白蛋白(BSA)作为模型来研究与II位点配体的相互作用。使用丹磺酰脯氨酸(DP)作为荧光位点II标记,我们证明了只有带负电荷的NSAIDs如布洛芬(IBP),萘普生(NPX),二氟尼柳(DFS),和酮洛芬(KTP)可以有效地从白蛋白结合位点置换DP。我们通过酯化中和IBP和NPX证实了RCOO的重要性,这减少了DP的位移。还通过停流实验监测竞争。虽然IBP和NPX在不到1s的时间内取代了DP,酯衍生物无效。我们还使用DFS作为探针和超滤实验观察到带负电荷的NSAID的更高亲和力。分子对接模拟显示带正电荷的残基Arg409和Lys413与RCOO-,与实验结果一致。我们通过应用分子动力学进行了配体解离途径和相应的能量分析。NPX的解离显示出比其酯更高的自由能垒。除了BSA,我们用人血清白蛋白进行了一些实验研究,并获得了类似的结果,提示对其他哺乳动物血清白蛋白的一般影响。我们的发现支持RCOOH部分不仅影响作用机制和副作用,而且影响NSAIDs的药代动力学。
    The molecular structures of nonsteroidal anti-inflammatory drugs (NSAIDs) vary, but most contain a carboxylic acid functional group (RCOOH). This functional group is known to be related to the mechanism of cyclooxygenase inhibition and also causes side effects, such as gastrointestinal bleeding. This study proposes a new role for RCOOH in NSAIDs: facilitating the interaction at the binding site II of serum albumins. We used bovine serum albumin (BSA) as a model to investigate the interactions with ligands at site II. Using dansyl-proline (DP) as a fluorescent site II marker, we demonstrated that only negatively charged NSAIDs such as ibuprofen (IBP), naproxen (NPX), diflunisal (DFS), and ketoprofen (KTP) can efficiently displace DP from the albumin binding site. We confirmed the importance of RCOO by neutralizing IBP and NPX through esterification, which reduced the displacement of DP. The competition was also monitored by stopped-flow experiments. While IBP and NPX displaced DP in less than 1 s, the ester derivatives were ineffective. We also observed a higher affinity of negatively charged NSAIDs using DFS as a probe and ultrafiltration experiments. Molecular docking simulations showed an essential salt bridge between the positively charged residues Arg409 and Lys413 with RCOO-, consistent with the experimental findings. We performed a ligand dissociation pathway and corresponding energy analysis by applying molecular dynamics. The dissociation of NPX showed a higher free energy barrier than its ester. Apart from BSA, we conducted some experimental studies with human serum albumin, and similar results were obtained, suggesting a general effect for other mammalian serum albumins. Our findings support that the RCOOH moiety affects not only the mechanism of action and side effects but also the pharmacokinetics of NSAIDs.
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