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Sore throat: diagnosis and treatment world standards and approaches to pharmaceutical care in Ukraine 喉咙痛:诊断和治疗世界标准和途径,在乌克兰的药物保健
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-23 DOI: 10.32383/appdr/170318
VIKTORIIA PROPISNOVA, TETIANA ZHULAI, Edmund Grześkowiak, Danuta Szkutnik-Fiedler
Sore throat is a common symptom that accompanies infectious and non-infectious diseases. World standards of sore throat treatment mainly regulate approaches to the diagnosis of the streptococcal nature of sore throat and the use of antibacterial therapy in a positive case. However, the predominant cause of sore throat is viruses and symptomatic treatment can be used. The study presents a brief overview of modern medical standards for sore throat, defining the role of a pharmacist and the experience of certain countries in involving him in the diagnosing and treating process. An analysis of the content of the Ukrainian Pharmacist’s protocol “Symptomatic treatment of sore throat” and the dynamics of its changes was carried out. Pharmacist’s Protocol elaborated in Ukraine successfully combines the algorithm of the primary pre-medical assessment of the patient’s condition with information and advisory support when dispensing over-the-counter medicines for responsible self-treatment of sore throat. However, certain improvements in the list of recommended medicines may be appropriate.
喉咙痛是伴随传染性和非传染性疾病的常见症状。世界咽喉痛治疗标准主要规范了链球菌性咽喉痛的诊断方法和阳性病例的抗菌治疗方法。然而,喉咙痛的主要原因是病毒,可以使用对症治疗。该研究简要概述了咽喉痛的现代医学标准,定义了药剂师的作用以及某些国家让药剂师参与诊断和治疗过程的经验。对乌克兰药剂师的“对症治疗喉咙痛”方案的内容及其变化的动态进行了分析。乌克兰制定的《药剂师议定书》成功地将对患者病情进行初步医疗前评估的算法与为负责任的咽喉痛自我治疗配发非处方药时提供的信息和咨询支持结合起来。然而,在推荐药物清单中进行某些改进可能是适当的。
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引用次数: 0
Evaluation of Diacerein Efficacy on Colitis as Anti-inflammatory and Anti-oxidant and its Role in Enhancing of Colon Barrier in Mice 二黄芩苷抗炎、抗氧化对结肠炎小鼠的影响及其增强结肠屏障的作用
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-23 DOI: 10.32383/appdr/169261
MAGED Almezgagi, MUHAMMAD SHOAIB TAHER, YU ZHANG, Mohammed Gamah, Xiang Gao, QINFANG ZHU, HUAN ZHANG, WEI ZHANG
Ulcerative colitis (UC) is a prevalent disorder characterized by oxidative stress and the release of pro-inflammatory cytokines that disturb the colonic mucosa. Currently, available medicines for UC remain unsatisfactory. Diacerein (DIAC) has exhibited anti-oxidant and anti-inflammatory properties in wide inflammatory disorders. However, the limited understanding of DIAC's role in bowel inflammation has necessitated the investigation of its efficacy in dextran sodium sulfate (DSS)-induced UC in Balb/c mice in this study. Fifty mice were equally divided into five groups. Except for the control, all groups were given DSS for seven days to induce the colitis model. The model was treated with 25 and 50mg/kg/day of DIAC and 00mg/kg/day of 5-aminosalicylic acid (5-ASA) for ten days. Several clinical, molecular and biochemical parameters were evaluated. Following the exposure to DSS, there was a significant upregulation in the pro-inflammatory cytokines (IL-1β, IL-6, IL-17 and TNF-α) and oxidative stress index (MDA). Meanwhile, the concentration of anti-oxidative stress indices (SOD, GPx and CAT) and the levels of IL-10, mucin-1 and 2 and tight junction proteins (TJs) ZO-1 and occludin were markedly suppressed. The colon length and body weight were reduced while DAI and myeloperoxidase (MPO) were elevated. Conversely, DIAC 50mg and 5-ASA significantly reversed the altered pro-inflammatory cytokines, oxidative stress and MPO. Moreover, they significantly restored body weight, colon length, DAI, TJs, mucin-1 and 2 and IL-10. No significant results were found with DIAC 25mg. In conclusion, DIAC exhibited therapeutic effectiveness against colitis. This research may provide hope for testing its effectiveness against UC in humans
溃疡性结肠炎(UC)是一种以氧化应激和促炎细胞因子的释放扰乱结肠粘膜为特征的普遍疾病。目前,可用于UC的药物仍然不令人满意。Diacerein (DIAC)在广泛的炎症性疾病中显示出抗氧化和抗炎特性。然而,由于对DIAC在肠道炎症中的作用了解有限,因此本研究需要研究其对右旋糖酐硫酸钠(DSS)诱导的Balb/c小鼠UC的疗效。50只老鼠被平均分为五组。除对照组外,其余各组均给予DSS 7 d诱导结肠炎模型。分别给予DIAC 25、50mg/kg/d和5-氨基水杨酸(5-ASA) 00mg/kg/d,连续10 d。对临床、分子和生化指标进行了评价。暴露于DSS后,促炎细胞因子(IL-1β、IL-6、IL-17和TNF-α)和氧化应激指数(MDA)显著上调。同时,抗氧化应激指标(SOD、GPx、CAT)浓度及IL-10、mucin-1、2、紧密连接蛋白(TJs)、ZO-1、occludin水平均受到明显抑制。结肠长度和体重减少,DAI和髓过氧化物酶(MPO)升高。相反,DIAC 50mg和5-ASA显著逆转了促炎细胞因子、氧化应激和MPO的改变。此外,它们显著恢复了体重、结肠长度、DAI、TJs、粘蛋白-1、2和IL-10。DIAC 25mg组无显著效果。总之,DIAC对结肠炎具有治疗效果。这项研究可能为测试其对人类UC的有效性提供了希望
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引用次数: 0
Insulin resistance and iatrogenic hyperinsulinemia in type 1 diabetes - norm or complication? Role of metformin in type 1 diabetes mellitus 1型糖尿病胰岛素抵抗和医源性高胰岛素血症:正常还是并发症?二甲双胍在1型糖尿病中的作用
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-23 DOI: 10.32383/appdr/171429
Małgorzata Bekier, Aleksandra Uruska, Danuta Szkutnik-Fiedler
There is a rising trend of overweight and obesity among individuals with type 1 diabetes. This is often associated with decreased insulin sensitivity, increased insulin dose requirements and poor glycemic control. Insulin resistance is a state of diminished effect of insulin on target tissues, despite normal or elevated serum insulin levels. Metformin as an adjunct to insulin in treating overweight or also not specific image of insulin resistance (without overweight or hormonal disorders) adults with type 1 diabetes is increasingly used. The main goal of this off-label type 1 diabetes treatment method is to improve insulin signaling leading to a subsequent increase in glucose uptake by skeletal myocytes, inhibition of hepatic gluconeogenesis and, as a result, a reduction in the need for a daily dose of insulin. The use of metformin as an addition to insulin may increase the chance of achieving target glucose control and reduce the anabolic effect of this hormone. Metformin can improve insulin sensitivity, glycemia and modulate cardiovascular disease risk factors or nonalcoholic fatty liver disease. In the vast majority of clinical trials conducted with metformin in type 1 diabetes, the effect of the drug on daily insulin doses, improvement in lipid parameters, and decline in body fat was assessed without correlating pre-specified outcomes with drug plasma concentrations.
在1型糖尿病患者中,超重和肥胖呈上升趋势。这通常与胰岛素敏感性降低、胰岛素剂量需求增加和血糖控制不良有关。胰岛素抵抗是胰岛素对靶组织的作用减弱的一种状态,尽管血清胰岛素水平正常或升高。二甲双胍作为辅助胰岛素治疗超重或非特异性胰岛素抵抗(无超重或激素紊乱)成人1型糖尿病的使用越来越多。这种标签外1型糖尿病治疗方法的主要目标是改善胰岛素信号传导,导致骨骼肌细胞随后增加葡萄糖摄取,抑制肝脏糖异生,从而减少每日胰岛素剂量的需求。使用二甲双胍作为胰岛素的补充可能会增加实现目标血糖控制的机会,并减少这种激素的合成代谢作用。二甲双胍可以改善胰岛素敏感性、血糖水平,调节心血管疾病或非酒精性脂肪肝的危险因素。在绝大多数使用二甲双胍治疗1型糖尿病的临床试验中,评估了该药对每日胰岛素剂量、脂质参数改善和体脂下降的影响,而没有将预先指定的结果与药物血浆浓度联系起来。
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引用次数: 0
Pharmacokinetic interaction of saxagliptin with andrographolide and their hypoglycemic effect in type 2 diabetes rats 沙格列汀与穿心莲内酯在2型糖尿病大鼠体内的药动学相互作用及降糖作用
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-23 DOI: 10.32383/appdr/170911
Suyan Wu, Haifei Pan, Yingying Huang
Controlling blood glucose is the primary therapeutic strategy for T2DM. Both saxagliptin and andrographolide possess hypoglycemic effects, which makes the combination easy. This study aimed to evaluate the co-administration of saxagliptin and andrographolide in rats and revealed their combined impact on type 2 diabetes (T2DM). T2DM rat models were established by high-fat diet and the injection of nicotinamide and streptozotocin. The blood glucose and insulin resistance index were monitored after modeling. The pharmacokinetics of saxagliptin was assessed by orally administrating 10 mg/kg saxagliptin. The co-administration was performed with the pre-treatment of 30 or 100 mg/kg andrographolide. In vitro, the metabolic stability of saxagliptin was assessed in rat liver microsomes. The co-administration of saxagliptin with andrographolide induced significant changes in the pharmacokinetics of saxagliptin, behaving as the increasing AUC(0-t), Cmax, t1/2, and the decreasing clearance rate. The effect of andrographolide was enhanced with the growing concentration. Combination with andrographolide enhanced the hypoglycemic effect and alleviated insulin resistance of saxagliptin in T2DM rats. Co-administration of saxagliptin with 100 mg/kg andrographolide induced hypoglycemia. In vitro, andrographolide significantly improved the metabolic stability of saxagliptin and showed a significant inhibitory effect on the activity of CYP3A4. Combining saxagliptin with andrographolide could increase the systemic exposure of saxagliptin via inhibiting CYP3A4 and improve the hypoglycemic effect, but the high concentration of andrographolide is the risk of inducing hypoglycemia.
控制血糖是2型糖尿病的主要治疗策略。沙格列汀和穿心莲内酯都有降糖作用,这使得联合使用很容易。本研究旨在评估沙格列汀和穿心莲内酯在大鼠中的联合应用,并揭示它们对2型糖尿病(T2DM)的联合影响。采用高脂饮食和注射烟酰胺、链脲佐菌素建立T2DM大鼠模型。造模后监测血糖和胰岛素抵抗指数。口服沙格列汀10 mg/kg,评价沙格列汀的药代动力学。同时给予30或100 mg/kg穿心莲内酯预处理。体外研究沙格列汀在大鼠肝微粒体中的代谢稳定性。沙格列汀与穿心莲内酯合用可引起沙格列汀药代动力学的显著变化,表现为AUC(0-t)、Cmax、t1/2升高,清除率降低。穿心莲内酯的作用随浓度的增加而增强。与穿心莲内酯联用可增强沙格列汀对T2DM大鼠的降糖作用,减轻沙格列汀的胰岛素抵抗。沙格列汀与100 mg/kg穿心莲内酯联合用药可引起低血糖。在体外实验中,穿心莲内酯显著提高了沙格列汀的代谢稳定性,对CYP3A4的活性有明显的抑制作用。沙格列汀与穿心莲内酯联用可通过抑制CYP3A4增加沙格列汀的全身暴露,改善降糖效果,但高浓度的穿心莲内酯存在诱发低血糖的风险。
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引用次数: 0
Panax ginseng C.A. Mey. as a potential raw material in the treatment of negative effects of alcohol consumption 人参c.a.m y。作为治疗酒精不良反应的潜在原料
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-17 DOI: 10.32383/appdr/170201
Monika Kompała, Julia Kuc, Zbigniew Skotnicki, Agata Jasińska-Balwierz, Nataliia Hudz, Radosław Jerzy Balwierz, Jacek Lipok
An alcohol hangover is a complex set of adverse symptoms that occur after excessive consumption of alcoholic beverages. Hangovers are not solely caused by ethanol, but mainly by its toxic metabolites, such as acetaldehyde and acetic acid. Most of the negative symptoms occur when the concentration of alcohol in the blood decreases after drinking. Given that a large percentage of people consume alcohol and experience negative effects from its consumption, potential supplementation to help eliminate these adverse effects has been proposed. One promising ingredient is ginseng, which has been used in Eastern culture and traditional Chinese medicine for over 2,000 years. The aim of this study was to present the potential of Panax ginseng C.A. Mey. as an aid for the adverse effects of alcohol consumption and its protective effect on liver function. The literature analysis was based on data indexed in medical databases PubMed, Scopus, and Medline since 2010, using keywords such as "Panax ginseng," "hangover," "alcohol consumption," and "metabolism," connected by the logical conjuction “and.” The analysis confirmed the effectiveness of P. ginseng in the treatment and prevention of hangovers. Preparations containing P. ginseng can support ethanol metabolism by inducing enzymes such as alcohol dehydrogenase, aldehyde dehydrogenase, and the cytochrome P450 isoform 2E1 system. An additional advantage of using P. ginseng may be its hepatoprotective effect.
酒精宿醉是过量饮用酒精饮料后出现的一系列复杂的不良症状。宿醉不仅仅是由乙醇引起的,主要是由它的有毒代谢物,如乙醛和乙酸引起的。大多数阴性症状发生在饮酒后血液中酒精浓度下降时。鉴于很大比例的人饮酒并经历其消费的负面影响,已经提出了潜在的补充,以帮助消除这些不利影响。一种很有前途的成分是人参,它在东方文化和传统中医中已经使用了2000多年。本研究的目的是探讨人参c.a.m y的潜力。作为酒精消费的不良影响及其对肝功能的保护作用的辅助。文献分析以医学数据库PubMed、Scopus和Medline自2010年以来检索的数据为基础,使用“人参”、“宿醉”、“饮酒”和“代谢”等关键词,通过逻辑连接“和”连接起来。分析证实了人参在治疗和预防宿醉方面的有效性。含有人参的制剂可以通过诱导乙醇脱氢酶、醛脱氢酶和细胞色素P450异构体2E1系统等酶来支持乙醇代谢。使用人参的另一个好处可能是它的肝保护作用。
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引用次数: 0
Simultaneously determination of fine particle dose of vilanterol and fluticasone furoate for dry powder inhaler (DPI) by utilizing gradient elution in chromatography system 梯度洗脱色谱法同时测定干粉吸入器中维兰特罗和糠酸氟替卡松细颗粒剂量
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-17 DOI: 10.32383/appdr/170317
Ewelina Szalek, Boguslawa Musial, Kamila Czarnecka, Paweł Szymański
Vilanterol (VT) and fluticasone furoate (FF) are components recently used in dry powder inhaler (DPI) to be administrated for patients with respiratory diseases, such as asthma or chronic obstructive pulmonary disease (COPD). In the present study, an approach to an analytical procedure development and validation is presented. Next generation impactor (NGI) and high performance liquid chromatography (HPLC) with UV detector were applied to determine two compounds and fine particle dose (FPD) of each active ingredients in DPI. The most satisfying chromatographic separation was obtained on Poroshell SB C18 (100 mm × 4.6 mm, 2.7 µm) column applying gradient elution by phosphonate buffer and acetonitrile. VT and FF were detected on a UV detector at wavelength of 210 nm and 245 nm, respectively. Among various coating agents, 4% polyethylene glycol PEG 200 in acetone (w/v) was selected as the most effective. Although various physicochemical properties of VT and FF, the analytical procedure allows simultaneously determine two compounds at different wavelengths. Limit of quantitative (LOQ) of vilanterol and fluticasone furoate were determined as 0.049 µg/ml and 0.032 µg/ml, respectively, what is desirable to determine of FPD of active ingredients in microdoses in DPI. The analytical procedure was determined as linear and accurate in the range of LOQ – 2.5 µg/ml and LOQ – 10.0 µg/ml of VT and FF, respectively. The coefficient of determination (R2) was found to be 0.9999 and 1.000 for VT and FF, respectively.
维兰特罗(VT)和糠酸氟替卡松(FF)是最近在干粉吸入器(DPI)中使用的成分,用于哮喘或慢性阻塞性肺疾病(COPD)等呼吸系统疾病患者。在本研究中,提出了一种分析程序开发和验证的方法。采用新一代冲击器(NGI)和高效液相色谱法(HPLC)结合紫外检测器测定了DPI中两种化合物和各有效成分的细颗粒剂量(FPD)。在Poroshell SB C18 (100 mm × 4.6 mm, 2.7µm)柱上,采用磷酸盐缓冲液和乙腈梯度洗脱,获得了最满意的色谱分离效果。VT和FF分别在波长为210 nm和245 nm的紫外检测器上检测。在各种涂层剂中,选择4%聚乙二醇PEG 200在丙酮(w/v)中的效果最好。虽然VT和FF的物理化学性质各不相同,但分析过程允许在不同波长同时测定两种化合物。维兰特罗和糠酸氟替卡松的定量限分别为0.049µg/ml和0.032µg/ml,符合DPI中微量剂量有效成分FPD的测定要求。VT和FF的LOQ分别为- 2.5µg/ml和- 10.0µg/ml,分析方法线性准确。VT和FF的决定系数R2分别为0.9999和1.000。
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引用次数: 0
Comparison of physiological state and conditions imitating the comorbidity of type 2 diabetes with Alzheimer's disease. The impact on: proliferation, H2O2, Aβ42, S100A8, S100B levels, neuronal protrusion and neurogenesis 模拟2型糖尿病合并阿尔茨海默病的生理状态和条件的比较。对细胞增殖、H2O2、Aβ42、S100A8、S100B水平、神经元突出和神经发生的影响
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-17 DOI: 10.32383/appdr/171296
Adriana Kubis-Kubiak, Benita Wiatrak, Agnieszka Piwowar
Abstract Aim: Recent studies demonstrate that individuals with T2DM more likely to develop AD. While, disturbed glucose or insulin homeostasis, are at the forefront of AD research, not much is known about extra- and intracellular interplay between different forms of Aβ and microenviromental fluctuations of glucose or insulin concentrations in neuronal cells. Methods: We create conditions imitating the coexistence of T2DM with AD and compare the results with state where the neuropathological changes are yet not developed. We have investigated the effect of the physiological (Aβ40) and toxic amyloid form (Aβ25–35) and its co-incubation with glucose or insulin on neuronal proliferation, H2O2, Aβ42, S100B, S100A8 protein concentrations, mature neuronal protrusions and neurogenesis. Results: Aβ40 and Aβ25-35 with hyperglycaemia provoked stronger cytotoxic effect comparing to Aβ alone, while hyperinsulinemia dampen this effect. Opposite results were obtained in H2O2 measurement. Insulin stimulated Aβ42 generation when co-incubated with both Aβ forms. Aβ40 and Aβ25-35 caused similar pattern of extracellular S100B protein influx an concomitant cytosolic efflux. Neuronal protrusions and neurogenesis were initiated by co-incubation of Aβ40 with hyperglycaemia while reduced in Aβ25-35 and hyperglycemia or insulinemia. Significance: Our finding suggest that for understanding the biochemical origins of neuropathological amyloid β progression and potential involvement of metabolic disturbances in this process, it’s crucial to gasp preliminary interactions on cellular level. Our data can lead to hypothesis that S100B protein could be a potential modulator as well as indicator of prodromal neuropathological alterations.
摘要目的:最近的研究表明,T2DM患者更容易发生AD。虽然,葡萄糖或胰岛素稳态紊乱是阿尔茨海默病研究的前沿,但对于不同形式的Aβ与神经元细胞中葡萄糖或胰岛素浓度微环境波动之间的细胞外和细胞内相互作用知之甚少。方法:模拟2型糖尿病与AD共存的条件,并与未发生神经病变的状态进行比较。我们研究了生理性(Aβ40)和毒性淀粉样蛋白(Aβ25-35)及其与葡萄糖或胰岛素共孵育对神经元增殖、H2O2、Aβ42、S100B、S100A8蛋白浓度、成熟神经元突起和神经发生的影响。结果:Aβ40和Aβ25-35合并高血糖比单独使用Aβ具有更强的细胞毒作用,而高胰岛素血症抑制了这种作用。在H2O2测量中得到相反的结果。当与两种Aβ形式共孵育时,胰岛素刺激Aβ42的产生。Aβ40和Aβ25-35引起细胞外S100B蛋白内流和伴随的胞质外排的相似模式。Aβ40与高血糖共孵育可引发神经元突起和神经发生,而Aβ25-35与高血糖或胰岛素血症共孵育可减少神经元突起和神经发生。意义:我们的发现表明,为了了解神经病理β淀粉样蛋白进展的生化起源和代谢紊乱在这一过程中的潜在参与,在细胞水平上进行初步的相互作用是至关重要的。我们的数据可以提出S100B蛋白可能是前驱神经病理改变的潜在调节剂和指标的假设。
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引用次数: 0
CYP2C9 mediates the herb-drug interaction of curcumin with naproxen in rats CYP2C9介导大鼠姜黄素与萘普生的中草药相互作用
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-16 DOI: 10.32383/appdr/170203
Yongjun Qiu, Sujun Huang, Minfang Zhu
Both curcumin and naproxen possess the activity of pain relief, which makes it possible to co-administrate these drugs in the same prescription. This study aimed to assess the potential pharmacokinetic interaction of naproxen with curcumin in rats. Sprague-Dawley (SD) rats were orally administrated with naproxen (10 mg/kg body weight) and curcumin (10 or 20 mg/kg, body weight) synchronously or successively with a single administration of naproxen as the control group. The plasma concentration of naproxen was analyzed with liquid chromatography tandem mass spectrometry and the plasma concentration-time curve was established to obtain the pharmacokinetic parameters. In vitro, the metabolic stability of naproxen and the activity of CYP2C9 was assessed in rat liver microsome to reveal the potential mechanism. Both synchronous and successive co-administration of naproxen and curcumin induced increased maximum concentration (Cmax), area under the curve (AUC0-t), half-life (t1/2) and reduced clearance rate (CLF) of naproxen in rats, and the effect of curcumin was enhanced with its increasing concentration. In vitro, curcumin (10 and 20 mg/kg) was found to enhance the metabolic stability of naproxen (half-life from 29.7 ± 1.34 to 41.8 ± 5.07 and 46.9 ± 3.33 min) and significantly inhibited the activity of CYP2C9 with the IC50 of 16.36 μmol/L (P < 0.05). A combination of naproxen and curcumin would induce pharmacokinetic interaction, which increased the systemic exposure of naproxen. The concentration-dependent inhibition of CYP2C9 by curcumin was the potential mechanism underlying the drug-herb interaction.
姜黄素和萘普生都具有缓解疼痛的活性,这使得在同一处方中共同使用这些药物成为可能。本研究旨在评估萘普生与姜黄素在大鼠体内潜在的药动学相互作用。以Sprague-Dawley (SD)大鼠为对照组,同时或连续口服萘普生(10 mg/kg体重)和姜黄素(10或20 mg/kg体重)。采用液相色谱串联质谱法分析萘普生的血药浓度,并建立血药浓度-时间曲线,获得其药动学参数。体外测定萘普生在大鼠肝微粒体中的代谢稳定性及CYP2C9活性,揭示其作用机制。萘普生与姜黄素同时或连续联合给药均可提高萘普生在大鼠体内的最大浓度(Cmax)、曲线下面积(AUC0-t)、半衰期(t1/2)和清除率(CLF),且姜黄素的作用随其浓度的增加而增强。在体外,姜黄素(10和20 mg/kg)增强萘普生代谢稳定性(半衰期分别为29.7±1.34 ~ 41.8±5.07和46.9±3.33 min),显著抑制CYP2C9活性,IC50为16.36 μmol/L (P <0.05)。萘普生与姜黄素联用会引起药代动力学相互作用,增加萘普生的全身暴露。姜黄素对CYP2C9的浓度依赖性抑制是药物-草药相互作用的潜在机制。
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引用次数: 0
The protolytic properties of the sialorphin derivative Pal-Lys-Lys-Gln-His-Asn-Pro-Arg in an aqueous solution 唾液肽衍生物Pal-Lys-Lys-Gln-His-Asn-Pro-Arg在水溶液中的水解性质
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-11 DOI: 10.32383/appdr/170103
Marek Pająk, Elżbieta Kamysz, Jakub Fichna, Magdalena Woźniczka
The present work describes the protolytic properties of the sialorphin derivative (Pal-Lys- Lys-Gln-His-Asn-Pro-Arg) in an aqueous solution, at constant temperature 25.0 ± 0.1 °C and ionic strength 0.1 M (NaClO4), over the entire pH range. The overall protonation constants of the studied ligand were calculated by the potentiometric method. The logarithm values of the stepwise dissociation constants of the sialorphin derivative were found to be: [LH] = 11.88 ± 0.09, [LH2]+ = 9.96 ± 0.03, [LH3]2+ = 8.71 ± 0.03, [LH4]3+ = 5.49 ± 0.03, [LH5]4+ = 2.82 ± 0.03. The percentage of each species formed in an aqueous solution was estimated from the species distribution curves as a function of pH (82% [LH] at pH 11.0, 68% [LH2]+ at pH 9.3, 95% [LH3]2+ at pH 7.1, 90% [LH4]3+ at pH 4.2, 85% [LH5]4+ at pH  2.0). The five protonation constants indicate that the studied ligand can be very active in forming complexes with different metal ions. In addition, the sialorphin derivative can also be tested as a bioactive material, which warrants its further in vitro and in vivo studies.
本研究描述了唾液卟啉衍生物(Pal-Lys- Lys-Gln-His-Asn-Pro-Arg)在整个pH范围内恒温(25.0±0.1°C)和离子强度0.1 M (NaClO4)水溶液中的原解性质。用电位法计算了所研究配体的总质子化常数。结果表明:[LH] = 11.88±0.09,[LH2]+ = 9.96±0.03,[LH3]2+ = 8.71±0.03,[LH4]3+ = 5.49±0.03,[LH5]4+ = 2.82±0.03。根据pH值的分布曲线估算了水溶液中形成的每种物质的百分比(pH值为11.0时为82% [LH], pH值为9.3时为68% [LH2]+, pH值为7.1时为95% [LH3]2+, pH值为4.2时为90% [LH4]3+, pH值为2.0时为85% [LH5]4+)。五个质子化常数表明所研究的配体可以非常活跃地与不同的金属离子形成配合物。此外,唾液肽衍生物还可以作为生物活性物质进行测试,这为其进一步的体外和体内研究提供了依据。
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引用次数: 0
In vitro antioxidant, anti-inflammatory activities and acetylcholinesterase inhibition properties of selected plant extracts 选定植物提取物的体外抗氧化、抗炎活性和乙酰胆碱酯酶抑制特性
4区 医学 Q3 Pharmacology, Toxicology and Pharmaceutics Pub Date : 2023-10-11 DOI: 10.32383/appdr/171435
Katarzyna Jakimiuk, Daniel Augustynowicz, Sylwia Wojtulewicz, Wiktoria Wiśniewska, Jakub Władysław Strawa, Julia Wyszkowska, Michał Tomczyk
Plant extracts remain an infinite source of bioactive chemicals and an inexhaustible resource for discovering new drugs of natural origin. Thus, in this study, we focused on analysing 29 ethanolic extracts (E1-E29) from selected plants of flora of Poland to assess their antioxidant, anti-inflammatory and acetylcholinesterase inhibitory properties in relation to the chemical profiles of phenolic compounds. The results show that the investigated samples differed in terms of their chemical compositions and biological activities. The extract from Cirsium palustre leaves (E13) possesses the highest phenolic and flavonoid contents as well as antiradical activity in the DPPH (2,2-diphenyl-1-picrylhydrazyl) test (415.28 ± 2.22 µM of Trolox equivalent). On the other hand, the most potent anti-inflammatory agents (at 125 µg/mL) were extracts from Odontites vulgaris herbs (E24), with a COX-2 (cyclooxygenase-2) inhibition percentage of 74.54 ± 0.77, and Erigeron acris flower heads (E22), with a 15-sLOX (soybean 15-lipooxygenase) inhibition percentage of 42.45 ± 3.32. All extracts exhibited moderate acetylcholinesterase inhibitory activity. Moreover, to the best of our knowledge, the present study is the first to report phytochemical and pharmacological analyses of extracts from Anthericum ramosum and Lysimachia europaea.
植物提取物仍然是生物活性化学物质的无限来源,也是发现天然新药的取之不尽的资源。因此,在本研究中,我们重点分析了29种乙醇提取物(E1-E29),以评估其抗氧化、抗炎和乙酰胆碱酯酶抑制特性与酚类化合物的化学特征有关。结果表明,所调查的样品在化学成分和生物活性方面存在差异。在DPPH(2,2-二苯基-1-苦酰肼)实验中(Trolox当量为415.28±2.22µM),鸢尾叶提取物(E13)的酚类、类黄酮含量和抗自由基活性最高。另一方面,牙齿草提取物(E24)对COX-2(环氧化酶-2)的抑制率为74.54±0.77,Erigeron acris花头提取物(E22)对15-sLOX(大豆15-脂氧化酶)的抑制率为42.45±3.32,抗炎活性最强(125µg/mL)。所有提取物均表现出中等程度的乙酰胆碱酯酶抑制活性。此外,据我们所知,本研究是第一个报道的植物化学和药理学分析的花椒和Lysimachia europaea提取物。
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Acta poloniae pharmaceutica
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