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Cucumeropsis mannii seed oil protects against bisphenol A-induced hepatotoxicity by mitigating inflammation and oxidative stress in rats 曼氏黄瓜籽油通过减轻大鼠炎症和氧化应激来保护大鼠免受双酚a诱导的肝毒性
Pub Date : 2023-10-20 DOI: 10.1093/rpsppr/rqad033
Patrick Maduabuchi Aja, Chinecherem Adanna Chukwu, Ugwu Okechukwu Paul-Chima, Boniface Anthony Ale, Peter Chinedu Agu, Tusubira Deusdedi, Darlington C Chukwu, Onyedika Gabriel Ani, Ezebuilo Ugbala Ekpono, Hilary Akobi Ogwoni, Joshua Nonso Awoke, Patience N Ogbu, Lucy Aja, Oliver Ugochukwu Ukachi, Obasi Uche Orji, Chinoso Peter Nweke, Chinedu Egwu, Ejike Ugbala Ekpono, Gift Onyinyechi Ewa, Ikechuku Okorie Igwenyi, Esther Ugo Alum, Daniel Ejim Uti, Christian Emeka Offor, Josiah E Ifie, Amaobichukwu Njoku, Maduagwunna Ekenechukwu Kenneth, Ejike Daniel Eze
Abstract OBJECTIVES This study looked at how CMSO affected male Wistar albino rats' liver damage caused by bisphenol A. METHODS The standard HPLC method was used to assess the CMSO's phenolic content. Then, six (n = 8) groups of forty-eight (48) male Wistar rats (150 20 g) each received either CMSO or olive oil before being exposed to BPA for 42 days. Groups: A (one milliliter of olive oil, regardless of weight), B (BPA 100 mg/kg body weight (BW)), C (CMSO 7.5 mg/kg BW), D (CMSO 7.5 mg/kg BW + BPA 100 mg/kg BW), E (CMSO 5.0 mg/kg BW + BPA 100 mg/kg BW), and F (CMSO 2.5 mg/kg BW + BPA 100 mg/kg BW). KEY FINDINGS A surprising abundance of flavonoids, totaling 17.8006 10.95 g/100 g, were found in the HPLC data. Malondialdehyde, liver enzymes, reactive oxygen species, total bilirubin, and direct bilirubin levels were all significantly elevated by BPA (p 0.05). Additionally, nuclear factor-B, interleukin-6, interleukin-1, tumor necrosis factor, and histological alterations were all considerably (p 0.05) caused by BPA. The altered biochemical markers and histology were, however, noticeably recovered by CMSO to a level that was comparable to the control. CONCLUSION Due to the abundance of flavonoid components in the oil, CMSO protects the liver from BPA-induced hepatotoxicity by lowering oxidative stress and inflammatory reactions.
【摘要】目的观察双酚a对雄性Wistar白化大鼠肝损伤的影响。方法采用高效液相色谱法测定双酚a对雄性Wistar白化大鼠肝损伤的影响。然后,六组(n = 8) 48只雄性Wistar大鼠(150 - 20克)分别接受CMSO或橄榄油,然后暴露于BPA 42天。组:A(1毫升橄榄油,不论重量)、B (BPA 100毫克/公斤体重)、C (CMSO 7.5毫克/公斤体重)、D (CMSO 7.5毫克/公斤体重+ BPA 100毫克/公斤体重)、E (CMSO 5.0毫克/公斤体重+ BPA 100毫克/公斤体重)、F (CMSO 2.5毫克/公斤体重+ BPA 100毫克/公斤体重)。HPLC数据显示,黄酮类化合物的含量高达17.800 ~ 10.95 g/100 g。双酚a组丙二醛、肝酶、活性氧、总胆红素和直接胆红素水平均显著升高(p 0.05)。此外,核因子- b、白细胞介素-6、白细胞介素-1、肿瘤坏死因子及组织学改变均显著(p < 0.05)。然而,通过CMSO,改变的生化标志物和组织学明显恢复到与对照组相当的水平。结论丁香精油中含有丰富的黄酮类成分,可通过降低氧化应激和炎症反应,保护肝脏免受bpa诱导的肝毒性。
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引用次数: 0
Nanoencapsulation of carotenoid extract via the temperature-induced phase transition of triblock polymer in Supercritical Carbon dioxide (scCO2) 超临界二氧化碳(scCO2)中三嵌段聚合物温度诱导相变对类胡萝卜素提取物的纳米包封
Pub Date : 2023-10-17 DOI: 10.1093/rpsppr/rqad035
Chiziezi I Wosu, Patricia J Harvey, Vivek Trivedi
Abstract Objectives Carotenoids are increasingly explored as nutraceuticals but their low bioavailability due to poor aqueous solubility limits their applications. This study discusses the development of a novel and organic solvent-free method to develop carotenoid-containing polymeric nanoparticles via temperature-induced phase transition (TIPT) of pluronic F-68 to obtain formulations with the improved dissolution of carotenoids. Methods The nanoencapsulation of carotenoids in pluronic F-68 was performed in supercritical carbon dioxide (scCO2) to avoid oxidative or temperature/solvent-induced degradation. The nanoencapsulates were prepared in scCO2 at 40 or 60 °C and 10 MPa without the aid of any organic solvent. The formulations thereafter were characterised for particle size via dynamic light scattering (DLS), particle morphology via Scanning Electron Microscopy (SEM) and carotenoid content/release via high-performance liquid chromatography (HPLC). Key findings HPLC results showed carotenoid degradation to be negligible in freshly prepared formulations when prepared in scCO2 at 60 °C and 10 MPa. The developed particles were spheroidal with sizes ranging between 150-250 nm depending on carotenoid content in the preparation. An improvement in the aqueous solubility and storage stability (5 ºC) of carotenoids was also observed for the formulations prepared in scCO2. Conclusions These results suggest that TIPT under scCO2 can be applied to formulate nanoparticulates with improved dissolution rate and stability of thermosensitive molecules such as carotenoids without causing any degradation during the processing.
摘要目的类胡萝卜素作为营养品被越来越多地探索,但由于水溶性差,其生物利用度低,限制了其应用。本研究探讨了一种新的有机无溶剂方法,通过pluronic F-68的温度诱导相变(TIPT)来制备含类胡萝卜素的聚合物纳米颗粒,以获得具有改善类胡萝卜素溶解性的配方。方法采用超临界二氧化碳(scCO2)对pluronic F-68进行类胡萝卜素纳米包封,避免氧化或温度/溶剂诱导降解。在没有任何有机溶剂的情况下,在40或60°C和10 MPa的scCO2中制备纳米胶囊。然后通过动态光散射(DLS)对配方进行粒度表征,通过扫描电子显微镜(SEM)对颗粒形态进行表征,通过高效液相色谱(HPLC)对类胡萝卜素含量/释放进行表征。HPLC结果表明,当在60°C和10 MPa的scCO2中制备时,新鲜制备的配方中的类胡萝卜素降解可以忽略不计。发育的颗粒是球形的,大小在150-250纳米之间,这取决于制备中的类胡萝卜素含量。在scCO2中制备的配方中,类胡萝卜素的水溶性和储存稳定性(5ºC)也有所改善。结论在scCO2作用下,TIPT可用于制备纳米颗粒,提高了类胡萝卜素等热敏性分子的溶解速度和稳定性,且在加工过程中不会造成任何降解。
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引用次数: 0
Melatonin protects mice from 5-FU hepatotoxicity and improves 5-FU antitumor effects by an apoptotic pathway dependent on cell cycle arrest in A549 human lung cancer cells 褪黑素在A549人肺癌细胞中保护小鼠免受5-FU肝毒性,并通过依赖于细胞周期阻滞的凋亡途径提高5-FU抗肿瘤作用
Pub Date : 2023-10-14 DOI: 10.1093/rpsppr/rqad034
Mona E Elbanan, Maggie E Amer, Mohamed A El-Missiry, Azza I Othman, Sameh M Shabana
Abstract Objectives This study will determine if melatonin (MLT) can be used with 5-fluorouracil (5-FU), an anticancer drug as "adjuvants" to reduce A549 lung cancer cell proliferation and sensitize those cells to 5-FU at lower doses while protecting mice from hepatotoxicity. Methods In vitro, MTT assays assessed cell proliferation, and Annexin-V flow cytometry measured A549 cell apoptosis. RT-qPCR measured apoptotic markers P53, KI67, Bax, Bcl-2, and caspase3; and immunoblotting evaluated cell cycle parameters p21, CDK2, and cyclin E. ELISA biochemical analysis examined liver function, ROS and antioxidant assays, and inflammatory markers, in vivo. Masson's trichome, hematoxylin, and eosin stains examined histopathological changes and fibrosis under a microscope. Key findings MLT combined with 5-FU elevated chemosensitization by decreasing A549 cell proliferation, lowering the IC50, increasing P21, P53, and BAX, decreasing Bcl-2, Ki-67, CDK2, and cyclin E, and inducing apoptosis and cell cycle arrest at G0/G1. After 5-FU (Intraperitoneal (IP))/MLT (oral) co-administration in vivo, all parameters improved and reversed. Liver enzymes (AST and ALT), bilirubin, albumin, total protein, albumin/globulin ratio, ROS, 4HNE, H2O2, and pro-inflammatory cytokines; IL-6, IL-1β, and TNFα declined while antioxidant enzymes like SOD, CAT, GSH, and GPx and IL-10 (anti-inflammatory) increased in combined MLT/5-FU treated groups compared to untreated and 5-FU alone treated groups. Histopathology confirmed these results. Conclusions MLT protected A549 cells from 5-FU-induced hepatotoxicity and enhanced 5-FU's antitumor effect in vitro. These results support MLT/5-FU's benefits, suggesting a more effective lung cancer treatment with fewer hepatotoxicity side effects. That could provide a novel therapeutic strategy for lung cancer.
摘要:本研究将确定褪黑激素(melatonin, MLT)是否可以与抗癌药物5-氟尿嘧啶(5-FU)作为“佐剂”使用,以减少A549肺癌细胞的增殖,并使这些细胞对低剂量的5-FU敏感,同时保护小鼠免受肝毒性。方法体外MTT法检测细胞增殖,Annexin-V流式细胞术检测A549细胞凋亡。RT-qPCR检测凋亡标志物P53、KI67、Bax、Bcl-2和caspase3;免疫印迹法评估细胞周期参数p21、CDK2和cyclin e。ELISA生化分析检测体内肝功能、ROS和抗氧化检测以及炎症标志物。马氏毛状染色、苏木精染色和伊红染色在显微镜下检查组织病理变化和纤维化。主要发现MLT联合5-FU通过降低A549细胞增殖,降低IC50,增加P21、P53和BAX,降低Bcl-2、Ki-67、CDK2和cyclin E,诱导细胞凋亡和细胞周期阻滞在G0/G1时提高化疗敏化。体内5-FU (IP) /MLT(口服)联合给药后,所有参数均得到改善和逆转。肝酶(AST和ALT)、胆红素、白蛋白、总蛋白、白蛋白/球蛋白比、ROS、4HNE、H2O2和促炎细胞因子;与未治疗组和5-FU单独治疗组相比,MLT/5-FU联合治疗组IL-6、IL-1β和TNFα下降,抗氧化酶SOD、CAT、GSH、GPx和IL-10(抗炎)升高。组织病理学证实了这些结果。结论MLT可保护A549细胞免受5-FU诱导的肝毒性,并增强5-FU的体外抗肿瘤作用。这些结果支持MLT/5-FU的益处,提示更有效的肺癌治疗和更少的肝毒性副作用。这可能为肺癌提供一种新的治疗策略。
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引用次数: 0
Fosphenytoin alleviates subacute herpetic neuralgia and postherpetic neuralgia in mice Fosphenytoin减轻小鼠亚急性疱疹性神经痛和带状疱疹后神经痛
Pub Date : 2023-09-09 DOI: 10.1093/rpsppr/rqad030
Ichiro Takasaki, Arata Inoue, Aoi Yoshida, Kimiyasu Shiraki, Y. Kitada, Saori Arai
This study aimed to explore the analgesic effects of fosphenytoin (fPHT) on pain-related behaviors in mouse models of subacute herpetic neuralgia (subAHN) and postherpetic neuralgia (PHN). SubAHN refers to pain experienced immediately after the disappearance of a skin rash, while PHN is characterized by persistent pain long after skin rash resolution. Our experimental approach involved the induction of acute herpes zoster-like skin lesions and pain-related responses (mechanical allodynia and hyperalgesia) in the hind paws of mice through cutaneous inoculation with herpes simplex virus type 1 (HSV-1). Subsequently, subAHN and PHN developed in the mice. Intravenous administration of fPHT (30 mg/kg) effectively mitigated HSV-1-induced subAHN and PHN. The suppressive effect of fPHT on subAHN was comparable to that of pregabalin (3 mg/kg, oral), a commonly used positive control. However, fPHT exhibited a slightly more potent effect than pregabalin in alleviating PHN. These findings suggest that intravenous fPHT could serve as a promising alternative for pain relief in both subAHN and PHN.
本研究旨在探讨磷妥英(fHT)对亚急性疱疹性神经痛(subAHN)和带状疱疹后神经痛(PHN)小鼠模型疼痛相关行为的镇痛作用。亚AHN指的是皮疹消失后立即出现的疼痛,而PHN的特征是皮疹消退后很长一段时间内持续疼痛。我们的实验方法涉及通过皮肤接种1型单纯疱疹病毒(HSV-1)在小鼠后爪诱导急性带状疱疹样皮肤损伤和疼痛相关反应(机械性异常疼痛和痛觉过敏)。随后,亚AHN和PHN在小鼠中发育。静脉给药fPHT(30mg/kg)有效减轻了HSV-1诱导的亚AHN和PHN。fPHT对亚AHN的抑制作用与普瑞巴林(3 mg/kg,口服)(一种常用的阳性对照)相当。然而,在减轻PHN方面,fPHT表现出比普瑞巴林略强的效果。这些发现表明,静脉注射fHT可以作为缓解亚AHN和PHN疼痛的一种有前途的替代方案。
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引用次数: 0
Recent Development of Novel Drug Delivery of Herbal Drugs 中药新型给药方法的研究进展
Pub Date : 2023-08-24 DOI: 10.1093/rpsppr/rqad028
Hardeep Singh, Gauri Sharma
Abstract Objective As plants are nature's panacea, mankind has used them for food and healing since the dawn of time. Currently, there are worldwide initiatives targeted at finding herbal treatments in plants and promoting them using a reliable drug delivery system for people. The fundamental idea underlying it is that each disease's cure can be found in nature. But the distribution of herbal medications also needs to be modified in order to promote patient compliance, achieve sustained discharge, etc. Key Findings Due to challenges with processing, standardisation, extraction, and identification, herbal medications traditionally could not convince scientists to modify novel drug delivery systems. Advanced approaches can be used to prevent toxicity, improve stability, increase the bioavailability of herbal formulations, and prevent physical and chemical deterioration. The various drug delivery systems indicated in this article are phytosomes, liposomes, nanoparticles, microspheres, microemulsions, niosomes, dendrimers, etc. Summary In order to enhance the delivery of herbal drugs by increasing their therapeutic benefits and reducing their toxicity, the need for innovative drug delivery systems has increased. This review provides information on numerous strategies used to increase the efficacy and safety of phytomedicines, as well as employing novel formulations. Conclusion By minimising toxicity and eliminating the need for repeated administration to overcome noncompliance, novel drug delivery systems increase therapeutic value. enhanced bioavailability, etc.
摘要目的植物是大自然的灵丹妙药,自古以来,人类就把它们作为食物和治疗的工具。目前,世界各地都有旨在从植物中寻找草药治疗方法并使用可靠的给药系统推广这些方法的倡议。它的基本思想是,每种疾病的治疗方法都可以在自然界中找到。但草药的分配也需要修改,以促进患者的依从性,实现持续出院等。由于在加工、标准化、提取和鉴定方面的挑战,草药传统上不能说服科学家修改新的给药系统。先进的方法可用于防止毒性,改善稳定性,增加草药配方的生物利用度,并防止物理和化学变质。本文指出的各种药物传递系统有光敏体、脂质体、纳米颗粒、微球、微乳、乳质体、树状大分子等。为了通过增加草药的治疗益处和降低其毒性来增强草药的递送,对创新药物递送系统的需求已经增加。这篇综述提供了许多用于提高植物药的有效性和安全性的策略的信息,以及采用新的配方。结论:新型给药系统通过减少毒性和消除重复给药以克服不依从性,增加了治疗价值。提高生物利用度等。
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引用次数: 0
Mutation Of Amino Acids In Sars-Cov-2 May Be Responsible For Cov-2 Vaccine Long Term Inefficiency 严重急性呼吸系统综合征冠状病毒2型的氨基酸突变可能是冠状病毒2型疫苗长期无效的原因
Pub Date : 2023-08-08 DOI: 10.1093/rpsppr/rqad027
Saganuwan Alhaji Saganuwan
SARS-Cov-2 vaccines confer protection for about two months, hence the need for booster dose. Inefficiency of the vaccines may be attributed to mutated amino acids leading to change in structure and function of immunogenetic viral particles. Therefore literature search was carried out with a view to identifying problems of CoV-2 vaccine long term inefficiency, using missensed amino acids of the immunogens. Narrative review of six different COVID-19 vaccines administered at different centres to a total population of 98,979 individuals aged ≥18-95 years was adopted. Number of individuals that came down with infection post vaccination, vaccine dose administered, recorded mortality, post vaccinated infection-free individuals, immunogenicity status, missense mutation, incidence, probability and quality of mutation among amino acids sequences of the vaccinated viral particles were determined. Findings have shown that some live-attenuted vaccines such as BBIBP-CorV, WBIP, ChAdOxnCoV and Ad26.CoV2.5 are efficacious, but could induce mortal infection and mutation of amino acids such as aspartic acid, glycine, cysteine, aspartate, tyrosine, phenylalanine, threonine, serine, alanine, methionine, leucine and lysine. Mutation of some specific amino acids could be responsible for severe pathogenicity of SARS-CoV-2 and vaccine failure. Modalities that regulate synthesis of nucleobases and amino acids could be used to avert vaccine failure and improves immunogenicity of the vaccines.
严重急性呼吸系统综合征冠状病毒2型疫苗可提供约两个月的保护,因此需要加强剂量。疫苗的无效性可能归因于突变的氨基酸导致免疫原性病毒颗粒的结构和功能发生变化。因此,进行了文献检索,以确定CoV-2疫苗长期低效的问题,使用免疫原的错义氨基酸。对在不同中心向年龄≥18-95岁的98979人接种的六种不同的新冠肺炎疫苗进行了叙述性审查。测定了接种疫苗后感染的个体数量、接种疫苗的剂量、记录的死亡率、接种疫苗后无感染的个体、免疫原性状态、错义突变、发生率、突变的概率和质量。研究结果表明,一些减毒活疫苗,如BBIBP-CorV、WBIP、ChAdOxnCoV和Ad26.CoV2.5是有效的,但可以诱导致命感染和氨基酸突变,如天冬氨酸、甘氨酸、半胱氨酸、天冬氨酸,酪氨酸、苯丙氨酸、苏氨酸、丝氨酸、丙氨酸、蛋氨酸、亮氨酸和赖氨酸。某些特定氨基酸的突变可能是严重急性呼吸系统综合征冠状病毒2型的严重致病性和疫苗失效的原因。调节核碱基和氨基酸合成的方式可用于避免疫苗失败并提高疫苗的免疫原性。
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引用次数: 0
CEDRUS DEODARA (ROXB.): A REVIEW ON THE RECENT UPDATE ON ITS PHARMACOLOGICAL AND PHYTOCHEMICAL PROFILE 雪松(roxb .):其药理和植物化学特征的最新进展综述
Pub Date : 2023-08-01 DOI: 10.1093/rpsppr/rqad026
Harsh Pathak, Sakshi Pathania, Shradha Metha, Ramica Sharma
Cedrus deodara (Roxb.) Loud. commonly called as deodar, belongs to family Pinaceae is a species of cedar native to the Western Himalayas in Eastern Afghanistan, Northern Pakistan, North-Central India, South Western Tibet and Western Nepal. The current review summarized and presents an up-to-date article on the medicinal uses, phytochemistry and biological activities of Cedrus deodara plant It is a medicinal tree and used traditionally to treat various diseases like microbial infection, joint disorder, asthma, skin diseases, kidney stone, peptic ulcer, brain disorders and inflammatory disorders. The chemical constituents obtained from different parts of plant include α-himachalene (12.5%) and β-himachalene (43%) associated with them are sesquiterpene alcohols (himachalol, allohimachalol, himadarol, isocentdarol, centdarol and cedrin(6-methyldihydromyricetin). Methylacetophenone, atlantonl. Deodarin, toxifolin, terpenoids, flavonoids and glycosides. Wikstromal, matairesinol, dibenzylbutyrolactol, bergapten, isopimpinellin, benzofuranoid neo lignan, isohemacholone Its chemical constituents are mostly responsible for the pharmacological actions. In recent in-vivo and in-vitro studies shows that Cedrus deodara have anti-inflammatory, analgesic, anti-hyperglycemic, anti-spasmodic, insecticidal, anti-apoptotic, anti-cancer, immmunomodulatory, molluscidal, anxiolytic and anticonvulsant properties. However, immediate efforts must be made to determine its mode of action, efficacy, dose range, and safety in addressing various disease situations
雪松(Roxb.)大声。松科的一种雪松,原产于阿富汗东部、巴基斯坦北部、印度中北部、西藏西南部和尼泊尔西部的喜马拉雅山脉西部。本文综述了雪松的药用、植物化学和生物活性。雪松是一种药用树木,传统上用于治疗各种疾病,如微生物感染、关节疾病、哮喘、皮肤病、肾结石、消化性溃疡、脑部疾病和炎症性疾病。从植物不同部位获得的化学成分包括α-himachalene(12.5%)和β-himacharene(43%),与它们相关的是倍半萜醇(himachalol、allo-himachaol、himadarol、isocentdarol、centdarol和cedrin(6-甲基二氢杨梅素)。甲基苯乙酮,Atlanton。Deodarin、toxifolin、萜类、黄酮类和糖苷类。Wikstromal、matairesinol、二苄基丁内酯、佛手柑内酯、异吡虫啉、苯并呋喃新木脂素、异赤霉素。其化学成分主要负责药理作用。最近的体内外研究表明,雪松具有抗炎、镇痛、抗高血糖、抗痉挛、杀虫、抗凋亡、抗癌、免疫调节、杀螺、抗焦虑和抗惊厥的特性。然而,必须立即努力确定其在应对各种疾病情况时的作用模式、疗效、剂量范围和安全性
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引用次数: 1
Acute Toxicity Study, Haematological, Biochemical And Histopathological Effects Of Brassica Oleracea Var Capitata, Allium Porrum And Cucurbita Maxima In Rattus Norvegicus 甘蓝、葱和葫芦对褐家鼠的急性毒性研究、血液学、生化和组织病理学影响
Pub Date : 2023-07-27 DOI: 10.1093/rpsppr/rqad025
Saganuwan Alhaji Saganuwan, Atanu Samuel Junior, Agu Solomon Tsekohol, N. Wanmi
The use of vegetables in Nigeria as nutraceutical cannot be over emphasized. However many vegetables are associated with toxicity effects at both low and high doses. Hence the study was aimed at investigating acute toxicity, haematological, biochemical, histopathological effects of Allium porrum (Leek),Cucurbita maxima (Pumpkin) and Brassica oleracea var capitata (Cabbage) in female Rattus norvegicus. The LD50 of the three plants were determined. The LD50 of aqueous extract of Cabbage, Leek, and Pumpkin was 6,585 mg/kg body weight. Cabbaged caused decrease in packed cell volume, erythrocytes counts, haemoglobin concentration, white blood cells, neutrophils and monocytes counts, increased basophils and eosinophils counts at dose levels of 5.79 mg/kg and 57.93 mg/kg body weight. At dose levels of 5.79-579.3 mg/kg body weight, the extract caused hypoalbuminaemia, hypoglycaemia, hypercholesterolaemia, increased levels of alanine amino transferase (ALT) and alkaline phosphatase (ALP). Cabbage also caused necrosis of hepatocytes, glomerular and tubular necrosis, cylinduria and perivascular cuffing in the brain. At dose level of 5.79 mg/kg and above, Cabbage may cause abortion during early stage of pregnancy due to possible loss of endometrial gland. The combined extract of Pumpkin and Leek caused haematopoiesis, neutropenia, lymphocytosis, eosinophilia, hypoglycaemia, hypocholesterolaemia , elevation of ALT levels, necrosis of hepatocytes and brain tissues, kidney damage and suppression of the development of ovarian follicle. Brassica oleracea var capitata may cause anaemia, immunosuppression, hypoglycaemia, hypercholesterolaemia, abortion, liver and kidney damage. The combined extract of leek and pumpkin may cause haematopoeisis, immunostimulation, hypoglycaemia, hypocholesterolaemia, brain problem and infertility.
在尼日利亚,蔬菜作为营养品的使用再怎么强调也不为过。然而,许多蔬菜在低剂量和高剂量下都有毒性作用。因此,本研究旨在探讨韭菜(Allium porrum)、南瓜(Cucurbita maxima)和白菜(Brassica oleracea var capitata)对雌性褐家鼠的急性毒性、血液学、生化和组织病理学的影响。测定了三种植物的LD50。白菜、韭菜、南瓜水提物的LD50为6585 mg/kg体重。在5.79 mg/kg和57.93 mg/kg体重剂量水平下,白菜引起堆积细胞体积、红细胞计数、血红蛋白浓度、白细胞、中性粒细胞和单核细胞计数减少,嗜碱性粒细胞和嗜酸性粒细胞计数增加。在5.79 ~ 579.3 mg/kg体重剂量水平下,可引起低白蛋白血症、低血糖、高胆固醇血症,谷丙转氨酶(ALT)和碱性磷酸酶(ALP)水平升高。白菜还引起肝细胞坏死、肾小球和小管坏死、脑柱和血管周围弯曲。在5.79 mg/kg及以上的剂量水平下,白菜可能导致子宫内膜腺的丧失,导致妊娠早期流产。南瓜韭菜联合提取物引起造血、中性粒细胞减少、淋巴细胞增多、嗜酸性粒细胞增多、低血糖、低胆固醇血症、ALT水平升高、肝细胞和脑组织坏死、肾损害和卵巢卵泡发育抑制。芥蓝可引起贫血、免疫抑制、低血糖、高胆固醇血症、流产、肝肾损害。韭菜和南瓜的混合提取物可能导致造血功能亢进、免疫刺激、低血糖、低胆固醇血症、脑问题和不孕。
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引用次数: 0
Carbopol coated mucoadhesive PLGA nanoparticles for the sustained delivery of pilocarpine in the buccal cavity 卡波波尔涂覆的黏附PLGA纳米颗粒在口腔中持续递送匹罗卡平
Pub Date : 2023-07-15 DOI: 10.1093/rpsppr/rqad024
V. Valkanioti, A. Kapourani, Melina Chatzitheodoridou, Maria-Emmanouela Anagnostaki, Ioannis Gkougkourelas, K. Kontogiannopoulos, A. Assimopoulou, P. Barmpalexis
This study investigates a new nanoparticulate (NP) formulation for local buccal administration of pilocarpine (PIL) to treat xerostomia, aiming to improve patient compliance and reduce side effects. PIL-loaded NPs were prepared using poly (d,l-lactic-co-glycolic acid) (PLGA) as a matrix/carrier and carbopol (CRB) as a mucoadhesive agent at various concentrations at ratios of 0.05%, 0.10% and 0.15% w/v. The NPs were characterized in terms of size, morphology, drug loading, thermophysical and physicochemical properties, in vitro dissolution performance, and mucoadhesion. Smooth spherical drug-loaded NPs (200-300 nm) were prepared in all cases. CRB coating did not impact particle size or polydispersity index (PDI) but increased NPs’ negative surface charges. Good storage stability, high production yields (72.0%-83.7%), and adequate drug loading efficiencies (9.0%-9.7%) were achieved, in all cases. DSC and pXRD measurements confirmed the amorphous drug dispersion, while ATR-FTIR studies revealed strong molecular interactions between the matrix/carrier and the mucoadhesive agent. In vitro drug release studies showed sustained release profiles for all NPs, whereas the application of a CRB-coating enhanced mucoadhesion performance through the formation of electrostatic ionic interactions and physical entanglement with mucin. The preparation of a new PLGA-based NP formulation may present itself as a promising strategy for the buccal administration of PIL, while the use of CRB coating could be considered as a useful approach for enhancing the mucus adhesion of NPs.
本研究研究研究了一种新的纳米颗粒(NP)制剂,用于局部口腔给药毛果芸香碱(PIL)治疗口腔干燥症,旨在提高患者的依从性并减少副作用。使用聚乳酸(PLGA)作为基质/载体,卡波姆(CRB)作为粘膜粘合剂,以0.05%、0.10%和0.15%w/v的比例制备PIL负载的NP。对纳米颗粒的大小、形态、载药量、热物理和物理化学性质、体外溶出性能和粘膜粘附性进行了表征。在所有情况下都制备了光滑的球形载药NP(200-300nm)。CRB涂层不影响颗粒尺寸或多分散指数(PDI),但增加了NP的负表面电荷。在所有情况下,都获得了良好的储存稳定性、高产量(72.0%-83.7%)和足够的载药效率(9.0%-9.7%)。DSC和pXRD测量证实了无定形药物分散体,而ATR-FTIR研究揭示了基质/载体与粘膜粘合剂之间的强烈分子相互作用。体外药物释放研究显示,所有NP都具有缓释特性,而CRB涂层的应用通过形成静电离子相互作用和与粘蛋白的物理纠缠来增强粘膜粘附性能。一种新的基于PLGA的NP制剂的制备可能是PIL口腔给药的一种有前途的策略,而CRB涂层的使用可以被认为是增强NP粘液粘附的一种有用方法。
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引用次数: 0
Novel Phosphate Binder Oxylanthanum Carbonate Effectively Reduced Serum & Urine Phosphorus Concentrations in Animal Models 新型磷酸盐结合剂碳酸氧镧在动物模型中有效降低血清和尿磷浓度
Pub Date : 2023-07-07 DOI: 10.1093/rpsppr/rqad022
P. Gupta, Atul Khare, G. Reddy
Over 40% of dialysis patients have above-target phosphate. The efficacy and safety of oxylanthanum carbonate(OLC), a novel phosphate binder that forms the same insoluble phosphate complex as lanthanum carbonate, were assessed in 2 animal models. 3 groups of nephrectomized cats(n=4 per group) received 0.0466 g OLC/kg body weight, 0.2330 g OLC/kg body weight, or placebo. 6 groups of rats (n=6 per group) received placebo or 0.049, 0.099, 0.197, 0.394, or 0.788 g OLC/day. Endpoints included phosphate concentrations(urine, fecal, plasma) and serum lanthanum concentrations. All animals were observed for tolerance, injury, and mortality. In cats, urine phosphorus concentrations decreased across treatment groups and fecal phosphorus excretion increased in higher dose groups compared to control and lower dose groups. A clear but non-significant decline in plasma phosphate was observed. In rats, urinary phosphorus concentrations also decreased in all groups. The majority of serum lanthanum concentrations for rats in treatment groups were not significantly different from those in control groups. The study drug was well-tolerated in both models. OLC was effective for phosphate management and efficacy may be dose-dependent. OLC was safe and well-tolerated, indicating that it should be evaluated in the target population of patients with hyperphosphatemia.
超过40%的透析患者有高于目标的磷酸盐。碳酸氧镧(OLC)是一种新型磷酸盐粘合剂,与碳酸镧形成相同的不溶性磷酸盐复合物,我们在2种动物模型中评估了OLC的有效性和安全性。3组肾切除猫(每组n=4)分别给予0.0466 g OLC/kg体重、0.2330 g OLC/kg体重或安慰剂。6组大鼠(每组n=6)服用安慰剂或0.049、0.099、0.197、0.394或0.788 g OLC/天。终点包括磷酸盐浓度(尿、粪、血浆)和血清镧浓度。观察所有动物的耐受性、损伤和死亡率。在猫中,与对照组和低剂量组相比,高剂量组的尿磷浓度降低,高剂量组的粪磷排泄量增加。观察到血浆磷酸盐明显但不显著下降。在大鼠中,所有组的尿磷浓度也有所下降。各治疗组大鼠血清镧浓度与对照组无显著性差异。研究药物在两种模型中都有良好的耐受性。OLC对磷酸盐管理是有效的,其效果可能是剂量依赖性的。OLC是安全且耐受性良好的,表明它应该在高磷血症患者的目标人群中进行评估。
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RPS pharmacy and pharmacology reports
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