Butyrylcholinesterase nanodepots with enhanced prophylactic and therapeutic performance for acute organophosphorus poisoning management

2021 ◽  
Vol 9 (7) ◽  
pp. 1877-1887
Author(s):  
Congwei Yu ◽  
Ming Zhao ◽  
Zuchen Pan ◽  
Yiyang Bo ◽  
Weiwei Zhao ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Therapeutic Efficacy ◽  
Organophosphorus Poisoning ◽  
Acute Organophosphorus Poisoning

Poly(4-acryloylmorpholine)-modified butyrylcholinesterase shows outstanding prophylactic and therapeutic efficacy against organophosphorus poisoning. Poly(4-acryloylmorpholine) holds promise as a PEG substitute in drug delivery.

Improved Therapeutic Efficacy of Topotecan Against A549 Lung Cancer Cells with Folate-targeted Topotecan Liposomes

2020 ◽  
Vol 21 (11) ◽  
pp. 902-909
Author(s):  
Jingxin Zhang ◽  
Weiyue Shi ◽  
Gangqiang Xue ◽  
Qiang Ma ◽  
Haixin Cui ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Drug Delivery ◽  
Cancer Cells ◽  
Targeted Delivery ◽  
Therapeutic Efficacy ◽  
Drug Delivery Systems ◽  
Lung Tumor ◽  
A549 Cells ◽  
Delivery Systems ◽  
Lung Cancer Cells

Background: Among all cancers, lung cancer has high mortality among patients in most of the countries in the world. Targeted delivery of anticancer drugs can significantly reduce the side effects and dramatically improve the effects of the treatment. Folate, a suitable ligand, can be modified to the surface of tumor-selective drug delivery systems because it can selectively bind to the folate receptor, which is highly expressed on the surface of lung tumor cells. Objective: This study aimed to construct a kind of folate-targeted topotecan liposomes for investigating their efficacy and mechanism of action in the treatment of lung cancer in preclinical models. Methods: We conjugated topotecan liposomes with folate, and the liposomes were characterized by particle size, entrapment efficiency, cytotoxicity to A549 cells and in vitro release profile. Technical evaluations were performed on lung cancer A549 cells and xenografted A549 cancer cells in female nude mice, and the pharmacokinetics of the drug were evaluated in female SD rats. Results: The folate-targeted topotecan liposomes were proven to show effectiveness in targeting lung tumors. The anti-tumor effects of these liposomes were demonstrated by the decreased tumor volume and improved therapeutic efficacy. The folate-targeted topotecan liposomes also lengthened the topotecan blood circulation time. Conclusion: The folate-targeted topotecan liposomes are effective drug delivery systems and can be easily modified with folate, enabling the targeted liposomes to deliver topotecan to lung cancer cells and kill them, which could be used as potential carriers for lung chemotherapy.

Nanostructured Ketorolac-Tromethamine/MCF: Synthesis, Characterization and Application in Drug Release System

2018 ◽  
Vol 14 (5) ◽  
pp. 432-439 ◽  
Author(s):  
Juliana M. Juarez ◽  
Jorgelina Cussa ◽  
Marcos B. Gomez Costa ◽  
Oscar A. Anunziata
Keyword(s):  
Drug Delivery ◽  
Drug Release ◽  
Therapeutic Efficacy ◽  
Drug Delivery Systems ◽  
Controlled Drug Release ◽  
Delivery Systems ◽  
The Body ◽  
Fickian Diffusion ◽  
Ketorolac Tromethamine

Background: Controlled drug delivery systems can maintain the concentration of drugs in the exact sites of the body within the optimum range and below the toxicity threshold, improving therapeutic efficacy and reducing toxicity. Mesostructured Cellular Foam (MCF) material is a new promising host for drug delivery systems due to high biocompatibility, in vivo biodegradability and low toxicity. Methods: Ketorolac-Tromethamine/MCF composite was synthesized. The material synthesis and loading of ketorolac-tromethamine into MCF pores were successful as shown by XRD, FTIR, TGA, TEM and textural analyses. Results: We obtained promising results for controlled drug release using the novel MCF material. The application of these materials in KETO release is innovative, achieving an initial high release rate and then maintaining a constant rate at high times. This allows keeping drug concentration within the range of therapeutic efficacy, being highly applicable for the treatment of diseases that need a rapid response. The release of KETO/MCF was compared with other containers of KETO (KETO/SBA-15) and commercial tablets. Conclusion: The best model to fit experimental data was Ritger-Peppas equation. Other models used in this work could not properly explain the controlled drug release of this material. The predominant release of KETO from MCF was non-Fickian diffusion.

Cisplatin and doxorubicin dual-loaded mesoporous silica nanoparticles for controlled drug delivery

RSC Advances ◽  
2016 ◽  
Vol 6 (96) ◽  
pp. 94160-94169 ◽  
Author(s):  
Hanwen Li ◽  
Huijuan Yu ◽  
Caiying Zhu ◽  
Jianhua Hu ◽  
Ming Du ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Mesoporous Silica ◽  
Synergistic Effect ◽  
Silica Nanoparticles ◽  
Therapeutic Efficacy ◽  
Mesoporous Silica Nanoparticles ◽  
Controlled Drug Delivery

Multicomponent therapeutic platforms have been proposed to minimize dosage of each drug and reduce toxicity, leading to achieving a synergistic effect and maximizing therapeutic efficacy.

scholarly journals LDH LEVEL IN ACUTE ORGANOPHOSPHORUS POISONING AND ITS RELATION WITH SEVERITY AND MORTALITY: A TERTIARY CARE HOSPITAL EXPERIENCE

2021 ◽  
Vol 5 (4) ◽  
Author(s):  
Suresh Kumar Nagar ◽  
Maniram Kumhar ◽  
V. B. Singh ◽  
Mayank Srivastav
Keyword(s):  
Organophosphorus Compounds ◽  
Tertiary Care ◽  
Crop Protection ◽  
Serum Lactate ◽  
Spectrophotometric Analysis ◽  
Serum Lactate Dehydrogenase ◽  
Care Hospital ◽  
Significant Difference ◽  
Organophosphorus Poisoning ◽  
Acute Organophosphorus Poisoning

Background: Organophosphorus compounds have been widely used for a few decades in agriculture for crop protection and pest control. In India Organophosphorus poisoning is the most common. The objective of our study was to measure the  LDH Level in acute organophosphorus poisoning Methods: This study was conducted among minimum 100 patients acute organophosphorus poisoning admitted in Casualty ward, MICU and attending medical ward of JLN hospital, Ajmer during Aug 2018 to July 2020. Serum lactate dehydrogenase estimation by spectrophotometric analysis using Beckman Coalter AU 680 Results: These were significantly higher among deaths on day 1 and 3(810±372.99 and 1027.09±458.26, respectively) in comparison to survivors on day 1 and 3 (538.18±300.42 and 365.19±175.49, respectively). Significant difference was found between mean values of different levels of severity of LDH on day 1 and 3. Conclusion: In conclusion, this study found that Serum LDH can be used as biomarker in diagnosis or stratifying severity of acute OP poisoning, as it is cheap and easily available, especially in developing countries. Serial measurements of serum LDH levels in acute OP poisoning can predict the prognosis. Keywords: LDH, OP poisoning, Severity

Clinical benefits of magnesium sulfate in management of acute organophosphorus poisoning

2018 ◽  
Vol 1 (2) ◽  
pp. 30 ◽  
Author(s):  
SamahF Ibrahim ◽  
UsamaM Elbarrany ◽  
MohammedA Mohamed ◽  
HishamA Elshekheby ◽  
TarekAS Afify
Keyword(s):  
Magnesium Sulfate ◽  
Organophosphorus Poisoning ◽  
Clinical Benefits ◽  
Acute Organophosphorus Poisoning

Dysfunction in macula, retinal pigment epithelium and post retinal pathway in acute organophosphorus poisoning

2020 ◽  
pp. 1-7
Author(s):  
Padmini Dahanayake ◽  
Tharaka L. Dassanayake ◽  
Manoji Pathirage ◽  
Anuradha Colombage ◽  
Indika B. Gawarammana ◽  
...  
Keyword(s):  
Retinal Pigment Epithelium ◽  
Pigment Epithelium ◽  
Retinal Pigment ◽  
Organophosphorus Poisoning ◽  
Acute Organophosphorus Poisoning
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