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Molefe-Nyembe NI, Adeyemi OS, Kondoh D, Kato K, Inoue N, Suganuma K. In Vivo Efficacy of Curcumin and Curcumin Nanoparticle in Trypanosoma congolense, Broden 1904 (Kinetoplastea: Trypanosomatidae)-Infected Mice. Pathogens 2023; 12:1227. [PMID: 37887743 PMCID: PMC10609685 DOI: 10.3390/pathogens12101227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 10/28/2023] Open
Abstract
Curcumin (CUR) is known for its wide folkloric effects on various infections; however, its solubility status has remained a hindrance to its bioavailability in the host. This study evaluated the comparative effects of CUR and CUR-nanoparticle in vitro on T. congolense, T. b. brucei, and T. evansi. Additionally, CUR and CUR-nanoparticle anti-Trypanosoma efficacy were assessed in vivo against T. congolense. All the CUR-nanoparticles were two folds more effective on the T. congolense as compared to CUR in vitro, with recorded efficacy of 3.67 ± 0.31; 7.61 ± 1.22; and 6.40 ± 3.07 μM, while the CUR-nanoparticles efficacy was 1.56 ± 0.50; 28.16 ± 9.43 and 13.12 ± 0.13 μM on T. congolense, T. b. brucei, and T. evansi, respectively. Both CUR and CUR-nanoparticles displayed moderate efficacy orally. The efficacy of CUR and CUR-nanoparticles in vivo was influenced by solubility, presence of food, and treatment period. CUR-treated mice were not cured of the infection; however, the survival rate of the orally treated mice was significantly prolonged as compared with intraperitoneal-treated mice. CUR-nanoparticles resulted in significant suppression of parasitemia even though relapsed was observed. In conclusion, CUR and CUR-nanoparticles possess moderate efficacy orally on the trypanosomes as compared to the intraperitoneal treatment.
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Affiliation(s)
- Nthatisi Innocentia Molefe-Nyembe
- Department of Zoology and Entomology, University of the Free State, Private Bag X13, Phuthaditjhaba 9866, South Africa
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro 080-8555, Hokkaido, Japan; (N.I.); (K.S.)
| | - Oluyomi Stephen Adeyemi
- Department of Biochemistry, Medicinal Biochemistry and Toxicology Laboratory, Landmark University, PMB 1001, Ipetu Road, Omu-Aran 251101, Nigeria;
| | - Daisuke Kondoh
- Section of Anatomy and Pathology, Division of Veterinary Sciences, Department of Veterinary Medicine, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro 080-8555, Hokkaido, Japan;
| | - Kentaro Kato
- Laboratory of Sustainable Animal Environmental Systems, Graduate School of Agricultural Sciences, Tohoku University, Sendai 980-8577, Japan;
| | - Noboru Inoue
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro 080-8555, Hokkaido, Japan; (N.I.); (K.S.)
| | - Keisuke Suganuma
- National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Nishi 2-11 Inada, Obihiro 080-8555, Hokkaido, Japan; (N.I.); (K.S.)
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Preetam S, Jonnalagadda S, Kumar L, Rath R, Chattopadhyay S, Alghamdi BS, Abuzenadah AM, Jha NK, Gautam A, Malik S, Ashraf GM. Therapeutic potential of lipid nanosystems for the treatment of Parkinson's disease. Ageing Res Rev 2023; 89:101965. [PMID: 37268112 DOI: 10.1016/j.arr.2023.101965] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 05/28/2023] [Accepted: 05/28/2023] [Indexed: 06/04/2023]
Abstract
Parkinson's disease (PD) is the second most common neurodegenerative disorder. The degeneration of dopaminergic neurons in the midbrain is primarily responsible for the onset of the disease. The major challenge faced in the treatment of PD is the blood-brain barrier (BBB), which impedes the delivery of therapeutics to targeted locations. To address this issue, lipid nanosystems have been used for the precise delivery of therapeutic compounds in anti-PD therapy. In this review, we will discuss the application and clinical significance of lipid nanosystem in delivering therapeutic compounds for anti-PD treatment. These medicinal compounds include ropinirole, apomorphine, bromocriptine, astaxanthin, resveratrol, dopamine, glyceryl monooleate, levodopa, N-3,4-bis(pivaloyloxy)- dopamine and fibroblast growth factor, which have significant potential to treat PD in the early stage. This review, in a nutshell, will pave the way for researchers to develop diagnostic and potential therapeutic approaches using nanomedicine to overcome the challenges posed by the BBB in delivering therapeutic compounds for PD.
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Affiliation(s)
- Subham Preetam
- Institute of Advanced Materials, IAAM, Gammalkilsvägen 18, Ulrika, 59053, Sweden; Centre for Biotechnology, Siksha O Anusandhan (SOA-DU), Bhubaneswar 751030, Odisha, India.
| | - Swathi Jonnalagadda
- School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, India.
| | - Lamha Kumar
- School of Biology, Indian Institute of Science Education and Research, Thiruvananthapuram, India.
| | - Rajeswari Rath
- Centre for Biotechnology, Siksha O Anusandhan (SOA-DU), Bhubaneswar 751030, Odisha, India.
| | - Soham Chattopadhyay
- Department of Zoology, Maulana Azad College, Kolkata, Kolkata-700013, West Bengal, India.
| | - Badrah S Alghamdi
- Department of Physiology, Neuroscience Unit, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia; Pre-Clinical Research Unit, King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Adel M Abuzenadah
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Niraj Kumar Jha
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida 201310, India; Department of Biotechnology, School of Applied & Life Sciences (SALS), Uttaranchal University, Dehradun 248007, India; School of Bioengineering & Biosciences, Lovely Professional University, Phagwara 144411, India; Department of Biotechnology Engineering and Food Technology, Chandigarh University, Mohali, 140413, India.
| | - Akash Gautam
- Centre for Neural and Cognitive Sciences, University of Hyderabad, Hyderabad 500046, India.
| | - Sumira Malik
- Amity Institute of Biotechnology, Amity University Jharkhand, Ranchi, Jharkhand, 834001, India; Guru Nanak College of Pharmaceutical Sciences, Chakrata Road, Jhajra, Dehradun 248007, India.
| | - Ghulam Md Ashraf
- University of Sharjah, College of Health Sciences, and Research Institute for Medical and Health Sciences, Department of Medical Laboratory Sciences.
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Mlozen MM, Van Marwijk J, Wilhelmi BS, Whiteley C. Comparative Analysis of the Interaction of Silver Nanoparticles with Hexokinase from Trypanosoma brucei and Humans. Int J Nanomedicine 2023; 18:1399-1411. [PMID: 36992823 PMCID: PMC10041994 DOI: 10.2147/ijn.s401319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/14/2023] [Indexed: 03/31/2023] Open
Abstract
Background Regardless of the efforts to ease cases of human African trypanosomiasis (HAT), an increased number of cases get reported annually. This is because of drug resistant Trypanosoma brucei (Tb), the causative agent of the illness. This has renewed the need for creative methods to find new anti-trypanosomal drugs. The blood stream form (BSF) of the parasite depends exclusively on the glycolytic pathway for energy production while it is in the human host. Interruptions in this pathway efficiently kills the parasite. Trypanosoma brucei hexokinase (TbHK) is the first enzyme in glycolysis, and any effectors or inhibitors of TbHK would have potential as anti-trypanosomal agents. Methods TbHK and human glucokinase (hGCK) were over-expressed with a 6 histidine-tag in E. coli BL21(DE3) cells having the pRARE2 plasmid. Results TbHK had thermal and pH stability between 30°C and 55°C and 7.5 and 8.5, respectively, while hGCK exhibited thermal and pH stability between 30°C and 40°C and 7.0 and 8.0, respectively. Kinetically, TbHK had a Km of 39.3 µM, Vmax of 0.066 µmol.min-1.mL-1, kcat of 2.05 min-1 and kcat/Km of 0.0526 min-1.µmol-1. hGCK exhibited a Km of 4.5 µM, Vmax of 0.032 µnmol.min-1.mL-1, kcat of 11.25 min-1, and kcat/Km of 2.5 min-1.µmol-1. Interaction kinetic studies of silver nanoparticles (AgNPs) (0.1 µM) of average size of 6 nm with TbHK and hGCK were conducted. AgNPs selectively inhibited TbHK over hGCK. TbHK showed a non-competitive inhibition with a 50% and 28% decrease in Vmax, and kcat/km, respectively. HsGCK showed a 33% increase in affinity, 9% decrease in Vmax, and a 50% increase in enzyme efficiency. Conclusion The observed pattern of hGCK and AgNPs falls under the uncompetitive inhibition. The observed highly selective inhibitory effects of AgNPs between TbHK and hGCK may be used in development of new anti-trypanosomal drugs.
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Affiliation(s)
- Madalitso M Mlozen
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda (Grahamstown), South Africa
- Malawi Adventist University, Malamulo Campus, Department of Biomedical Sciences, Makwasa, Malawi
- Correspondence: Madalitso M Mlozen, Malawi Adventist University, Malamulo campus, Department of Biomedical Sciences, P.O.Box 55, Makwasa, Tel +265 884628334, Email
| | - Jacqueline Van Marwijk
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda (Grahamstown), South Africa
| | - Brendan Shane Wilhelmi
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda (Grahamstown), South Africa
| | - Chris Whiteley
- Department of Biochemistry and Microbiology, Rhodes University, Makhanda (Grahamstown), South Africa
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Afzal O, Altamimi ASA, Nadeem MS, Alzarea SI, Almalki WH, Tariq A, Mubeen B, Murtaza BN, Iftikhar S, Riaz N, Kazmi I. Nanoparticles in Drug Delivery: From History to Therapeutic Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12244494. [PMID: 36558344 PMCID: PMC9781272 DOI: 10.3390/nano12244494] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/04/2022] [Accepted: 12/14/2022] [Indexed: 05/25/2023]
Abstract
Current research into the role of engineered nanoparticles in drug delivery systems (DDSs) for medical purposes has developed numerous fascinating nanocarriers. This paper reviews the various conventionally used and current used carriage system to deliver drugs. Due to numerous drawbacks of conventional DDSs, nanocarriers have gained immense interest. Nanocarriers like polymeric nanoparticles, mesoporous nanoparticles, nanomaterials, carbon nanotubes, dendrimers, liposomes, metallic nanoparticles, nanomedicine, and engineered nanomaterials are used as carriage systems for targeted delivery at specific sites of affected areas in the body. Nanomedicine has rapidly grown to treat certain diseases like brain cancer, lung cancer, breast cancer, cardiovascular diseases, and many others. These nanomedicines can improve drug bioavailability and drug absorption time, reduce release time, eliminate drug aggregation, and enhance drug solubility in the blood. Nanomedicine has introduced a new era for drug carriage by refining the therapeutic directories of the energetic pharmaceutical elements engineered within nanoparticles. In this context, the vital information on engineered nanoparticles was reviewed and conferred towards the role in drug carriage systems to treat many ailments. All these nanocarriers were tested in vitro and in vivo. In the coming years, nanomedicines can improve human health more effectively by adding more advanced techniques into the drug delivery system.
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Affiliation(s)
- Obaid Afzal
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Abdulmalik S. A. Altamimi
- Department of Pharmaceutical Chemistry, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al Kharj 11942, Saudi Arabia
| | - Muhammad Shahid Nadeem
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Sami I. Alzarea
- Department of Pharmacology, College of Pharmacy, Jouf University, Sakaka 72341, Saudi Arabia
| | - Waleed Hassan Almalki
- Department of Pharmacology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Aqsa Tariq
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Lahore 54000, Pakistan
| | - Bismillah Mubeen
- Institute of Molecular Biology and Biotechnology (IMBB), The University of Lahore, Lahore 54000, Pakistan
| | - Bibi Nazia Murtaza
- Department of Zoology, Abbottabad University of Science and Technology (AUST), Abbottabad 22310, Pakistan
| | - Saima Iftikhar
- School of Biological Sciences, University of Punjab, Lahore 54000, Pakistan
| | - Naeem Riaz
- Department of Pharmacy, COMSATS University, Abbottabad 22020, Pakistan
| | - Imran Kazmi
- Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Lipid-Drug Conjugates and Nanoparticles for the Cutaneous Delivery of Cannabidiol. Int J Mol Sci 2022; 23:ijms23116165. [PMID: 35682847 PMCID: PMC9180973 DOI: 10.3390/ijms23116165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/23/2022] [Accepted: 05/30/2022] [Indexed: 02/01/2023] Open
Abstract
Lipid nanoparticles are currently used to deliver drugs to specific sites in the body, known as targeted therapy. Conjugates of lipids and drugs to produce drug-enriched phospholipid micelles have been proposed to increase the lipophilic character of drugs to overcome biological barriers. However, their applicability at the topical level is still minimal. Phospholipid micelles are amphiphilic colloidal systems of nanometric dimensions, composed of a lipophilic nucleus and a hydrophilic outer surface. They are currently used successfully as pharmaceutical vehicles for poorly water-soluble drugs. These micelles have high in vitro and in vivo stability and high biocompatibility. This review discusses the use of lipid-drug conjugates as biocompatible carriers for cutaneous application. This work provides a metadata analysis of publications concerning the conjugation of cannabidiol with lipids as a suitable approach and as a new delivery system for this drug.
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Agrawal S, Garg A, Varshney V. Recent updates on applications of Lipid-based nanoparticles for site-specific drug delivery. Pharm Nanotechnol 2022; 10:24-41. [PMID: 35249522 DOI: 10.2174/2211738510666220304111848] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/07/2022] [Accepted: 01/25/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Site-specific drug delivery is a widespread and demanding area nowadays. Lipid-based nanoparticulate drug delivery systems have shown promising effects for targeting drugs among lymphatic systems, brain tissues, lungs, and skin. Recently, lipid nanoparticles are used for targeting the brain via the mucosal route for local therapeutic effects. Lipid nanoparticles (LNPs) can help in enhancing the efficacy and lowering the toxicities of anticancer drugs to treat the tumors, particularly in lymph after metastases of tumors. LNPs contain a non-polar core that can improve the absorption of lipophilic drugs into the lymph node and treat tumors. Cellular uptake of drugs can also be enhanced using LNPs and therefore, LNPs are the ideal carrier for treating intracellular infections such as leishmaniasis, tuberculosis and parasitic infection in the brain, etc. Furthermore, specific surface modifications with molecules like mannose, or PEG could improve the macrophage uptake and hence effectively eradicate parasites hiding in macrophages. METHOD An electronic literature search was conducted to update the advancements in the field of site-specific drug delivery utilizing lipid-based nanoparticles. A search of the Scopus database (https://www.scopus.com/home.uri) was conducted using the following keywords: lipid-based nanoparticles; site specific delivery. CONCLUSION Solid lipid nanoparticles have shown site-specific targeted delivery to various organs including the liver, oral mucosa, brain, epidermis, pulmonary and lymphatic systems. These lipid-based systems showed improved bioavailability as well as reduced side effects. Therefore, the focus of this article is to review the recent research studies on LNPs for site-specific or targeting drug delivery.
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Affiliation(s)
- Shivanshu Agrawal
- Institute of Pharmaceutical Research, GLA University, Mathura-281406, U.P., India
| | - Anuj Garg
- Institute of Pharmaceutical Research, GLA University, Mathura-281406, U.P., India
| | - Vikas Varshney
- Institute of Pharmaceutical Research, GLA University, Mathura-281406, U.P., India
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Wang Y, Jia F, Lin Y. Poly(butyl cyanoacrylate) nanoparticles-delivered β-nerve growth factor promotes the neurite outgrowth and reduces the mortality in the rat after traumatic brain injury. NANOTECHNOLOGY 2022; 33:135101. [PMID: 34929684 DOI: 10.1088/1361-6528/ac44e8] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 12/20/2021] [Indexed: 06/14/2023]
Abstract
Several transport vectors, including nanoparticles, have been reported to be used for the delivery of therapeutic medicines crossing the impermeable blood-brain barrier (BBB) to treat the diseases in the central nerve system (CNS), such as traumatic brain injury (TBI). Poly(n-butyl-2-cyanoacrylate) (PBCA) nanoparticles, made from biocompatible material, are regarded as a better potential delivery tool than others such as gold nanoparticles due to their degradabilityin vivo. However, little is known whether PBCA nanoparticles can be used to deliver neurotrophic factors into the brain to treat TBI. In this study, we first synthesized PBCA-carriedβ-nerve growth factor, a neurotrophic agent with a large molecular weight, and then intravenously injected the compound into TBI rats. We found that despite undergoing several synthesis steps and host circulation,β-NGF was able to be successfully delivered into the injured brain by PBCA nanoparticles, still maintain its neurotrophic activity for neurite outgrowth, and reduce the mortality of TBI rats. Our findings indicate that PBCA nanoparticles, with Tween 80, are an efficient delivery vector and a protective reservoir for large molecular therapeutic agents to treat TBI intravenously.
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Affiliation(s)
- Yu Wang
- Department of Neurosurgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
| | - Feng Jia
- Department of Neurosurgery, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
| | - Yong Lin
- Traumatic Brain Injury Center, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 160 Pujian Road, Shanghai 200127, People's Republic of China
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Ramos-de-la-Peña AM, Aguilar O, González-Valdez J. Progress in nanostructure understanding of edible crystalline fats and their application in nano-delivery systems: Cocoa butter as a model. Food Res Int 2021; 147:110561. [PMID: 34399538 DOI: 10.1016/j.foodres.2021.110561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/30/2021] [Accepted: 06/22/2021] [Indexed: 11/30/2022]
Abstract
Nucleation and crystal growth of edible fats at the nanoscale have received little attention due to analytical limitations. A key factor to modify the properties of edible fats is nanostructure understanding. Progress within the last years will be presented, including analytical techniques used to investigate fat crystallization. Cocoa butter has been the subject of several works due to its properties and its high impact on chocolate manufacturing. Moreover, this vegetable fat has been used as the solid lipid component in nano delivery systems. Since nanoplatelet is the smallest unit in crystalline fats, and the nanoscale is influenced by supersaturation, temperature, shear fields, and surfactants, nanostructure engineering is possible. On its part, cocoa butter has been included in innovative delivery systems along the last years. This review will highlight main results and challenges on these topics.
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Affiliation(s)
- Ana Mayela Ramos-de-la-Peña
- Tecnologico de Monterrey, School of Engineering and Science, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL 64849, Mexico.
| | - Oscar Aguilar
- Tecnologico de Monterrey, School of Engineering and Science, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL 64849, Mexico.
| | - José González-Valdez
- Tecnologico de Monterrey, School of Engineering and Science, Av. Eugenio Garza Sada 2501 Sur, Monterrey, NL 64849, Mexico.
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Nanotechnological interventions for treatment of trypanosomiasis in humans and animals. Drug Deliv Transl Res 2021; 10:945-961. [PMID: 32383004 DOI: 10.1007/s13346-020-00764-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Trypanosomiasis is a parasitic infection caused by Trypanosoma. It is one of the major causes of deaths in underprivileged, rural areas of Africa, America and Asia. Depending on the parasite species responsible for the disease, it can take two forms namely African trypanosomiasis (sleeping sickness) and American trypanosomiasis (Chagas disease). The complete life-cycle stages of trypanosomes span between insect vector (tsetse fly, triatomine bug) and mammalian host (humans, animals). Only few drugs have been approved for the treatment of trypanosomiasis. Moreover, current trypanocidal therapy has major limitations of poor efficacy, serious side effects and drug resistance. Due to the lack of economic gains from tropical parasitic infection, it has always been neglected by the researchers and drug manufacturers. There is an immense need of more effective innovative strategies to decrease the deaths associated with this diseases. Nanotechnological approaches for delivery of existing drugs have shown significant improvement in efficacy with many-fold decrease in their dose. The review emphasizes on nanotechnological interventions in the treatment of trypanosomiasis in both humans and animals. Current trypanocidal therapy and their limitations have also been discussed briefly. Graphical abstract.
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da Silva Oliveira GL, da Silva APDSCL. Evaluation of the non-clinical toxicity of an antiparasitic agent: diminazene aceturate. Drug Chem Toxicol 2021; 45:2003-2013. [PMID: 33685320 DOI: 10.1080/01480545.2021.1894741] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The diminazene aceturate (C14H15N7.2C4H7NO3) is a chemotherapeutic agent with more than six decades of use, however more studies regarding its toxicity still need to be performed. Thus, the present study determined the acute toxicity (14 days) of diminazene acetate (DIZE) in male and female swiss mice by changes in body mass, food consumption, biochemical and hematological parameters, locomotor activity and motor coordination. DIZE was administered at a single dose (1000 and 2000 mg/kg) orally. In addition, in vitro antioxidant capacity, hemolytic activity, toxicity in Artemia salina and in silico evaluation were also performed. The results obtained include several signs of toxicity (hypoactivity, loss of the straightening reflex and tachycardia), reduction of behavioral activity (locomotor activity and motor coordination) and significant changes (p < 0.05) in biochemical and hematological parameters. According to the in silico study, the DIZE can be classified based on the mean lethal dose (LD50) in category 4 (300 mg/kg < LD50 ≤ 2000 mg/kg, ProTox-II) or 3 (50 mg/kg < LD50 ≤ 300 mg/kg, AdmetSAR 1.0). Additionally, DIZE (30.3-969.9 nM) was not toxic to A. salina in the first 48 hours of treatment and was not cytotoxic to rat red blood cells after induced hemolysis. In vitro results indicated low antioxidant capacity against DPPH• and ABTS•+ radicals. Therefore, DIZE induces several adverse effects with influence on the central nervous system, changes in hematological and biochemical parameters and even mortality at the highest dose. However, absence of toxicity was observed in A. salina and rats red blood cells.
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Chintamaneni PK, Krishnamurthy PT, Pindiprolu SKSS. Polysorbate-80 surface modified nano-stearylamine BQCA conjugate for the management of Alzheimer's disease. RSC Adv 2021; 11:5325-5334. [PMID: 35423107 PMCID: PMC8694636 DOI: 10.1039/d1ra00049g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 01/13/2021] [Indexed: 01/31/2023] Open
Abstract
Acetylcholinesterase (AChE) inhibitors such as donepezil, galantamine and rivastigmine are used for the management of dementia in Alzheimer's Disease (AD). These drugs elevate endogenous acetylcholine (ACh) levels at the M1 muscarinic receptor in the brain to achieve therapeutic benefits. However, their side effects, such as nausea, vomiting, dizziness, insomnia, loss of appetite, altered heart rate, etc., are related to non-specific peripheral activation of M2-M5 muscarinic subtypes. It is logical, therefore, to develop drugs that selectively activate brain M1 receptors. Unfortunately, the orthosteric site homology among the receptor subtypes does not permit this approach. An alternative approach is to use positive allosteric modulator (PAM) of M1 receptors like benzyl quinolone carboxylic acid (BQCA). PAMs although devoid of M1 agonist activity, however, when bound, enhance the binding affinity of orthosteric ligand, Ach. The current challenge with PAMS is their low brain half-life, permeability, and higher elimination rates. This study reports active targeting of brain M1 receptors using surface modified nano lipid-drug conjugates (LDC) of M1 PAM, BQCA, to treat AD. Polysorbate-80 (P-80) surface modified stearylamine (SA)-BQCA conjugated nanoparticles (BQCA-SA-P80-NPs) were prepared by conjugating BQCA to SA, followed by the formation of nanoparticles (NPs) using P-80 by solvent injection method. The BQCA-SA-P80-NPs are near-spherical with a particle size (PS) of 166.62 ± 1.24 nm and zeta potential (ZP) of 23.59 ± 0.37 mV. In the in vitro cytotoxicity (SH-SY5Y cells) and hemolysis assays, BQCA-SA-P80-NPs, show acceptable safety and compatibility. In mice, Alzheimer's model, BQCA-SA-P80-NPs significantly prevent STZ induced changes in memory, neuronal Aβ1-42, p-Tau, APP, NF-κB, and BACE levels and neuronal cell death, when compared to untreated disease control and naïve BQCA treated group. Further, BQCA-SA-P80-NPs significantly improve the therapeutic efficacy of AChE inhibitor, donepezil (DPZ), indicating its potentiating effects. In vivo biodistribution studies in mice show selective accumulation of BQCA-SA-P80-NPs in the brain, suggesting an improved brain bioavailability and reduced peripheral side effects of BQCA. The study results demonstrate that BQCA-SA-P80-NPs can improve brain bioavailability and therapeutic efficacy of BQCA in AD.
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Affiliation(s)
- Pavan Kumar Chintamaneni
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research) Ooty, The Nilgiris Tamil Nadu-643001 India +91-7598223850
- Department of Pharmaceutics, Raghavendra Institute of Pharmaceutical Education and Research (RIPER) Anantapuramu 51572 Andhra Pradesh India
| | - Praveen Thaggikuppe Krishnamurthy
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research) Ooty, The Nilgiris Tamil Nadu-643001 India +91-7598223850
| | - Sai Kiran S S Pindiprolu
- Department of Pharmacology, JSS College of Pharmacy (JSS Academy of Higher Education & Research) Ooty, The Nilgiris Tamil Nadu-643001 India +91-7598223850
- Department of Pharmacology, Aditya Pharmacy College Surampalem East Godavari 533 437 Andhra Pradesh India
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Ribeiro LNM, Rodrigues da Silva GH, Couto VM, Castro SR, Breitkreitz MC, Martinez CS, Igartúa DE, Prieto MJ, de Paula E. Functional Hybrid Nanoemulsions for Sumatriptan Intranasal Delivery. Front Chem 2020; 8:589503. [PMID: 33282832 PMCID: PMC7689160 DOI: 10.3389/fchem.2020.589503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/08/2020] [Indexed: 11/17/2022] Open
Abstract
In recent years, advanced nanohybrid materials processed as pharmaceuticals have proved to be very advantageous. Triptans, such as the commercially available intranasal sumatriptan (SMT), are drugs employed in the treatment of painful migraine symptoms. However, SMT effectiveness by the intranasal route is limited by its high hydrophilicity and poor mucoadhesion. Therefore, we designed hybrid nanoemulsions (NE) composed of copaiba oil as the organic component plus biopolymers (xanthan, pectin, alginate) solubilized in the continuous aqueous phase, aiming at the intranasal release of SMT (2% w/v). Firstly, drug-biopolymer complexes were optimized in order to decrease the hydrophilicity of SMT. The resultant complexes were further encapsulated in copaiba oil-based nanoparticles, forming NE formulations. Characterization by FTIR-ATR, DSC, and TEM techniques exposed details of the molecular arrangement of the hybrid systems. Long-term stability of the hybrid NE at 25°C was confirmed over a year, regarding size (~ 120 nm), polydispersity (~ 0.2), zeta potential (~ −25 mV), and nanoparticle concentration (~ 2.1014 particles/mL). SMT encapsulation efficiency in the formulations ranged between 41–69%, extending the in vitro release time of SMT from 5 h (free drug) to more than 24 h. The alginate-based NE was selected as the most desirable system and its in vivo nanotoxicity was evaluated in a zebrafish model. Hybrid NE treatment did not affect spontaneous movement or induce morphological changes in zebrafish larvae, and there was no evidence of mortality or cardiotoxicity after 48 h of treatment. With these results, we propose alginate-based nanoemulsions as a potential treatment for migraine pain.
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Affiliation(s)
- Lígia N. M. Ribeiro
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Gustavo H. Rodrigues da Silva
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Verônica M. Couto
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Simone R. Castro
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
| | - Márcia C. Breitkreitz
- Department of Analytical Chemistry, Institute of Chemistry, University of Campinas, Campinas, Brazil
| | - Carolina S. Martinez
- Department of Science and Technology, National University of Quilmes, Bernal, Argentina
| | - Daniela E. Igartúa
- Department of Science and Technology, National University of Quilmes, Bernal, Argentina
| | - Maria J. Prieto
- Department of Science and Technology, National University of Quilmes, Bernal, Argentina
| | - Eneida de Paula
- Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas (UNICAMP), Campinas, Brazil
- *Correspondence: Eneida de Paula
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Silva CC, Correa AMB, Kushmerick C, Sharma NM, Patel KP, de Almeida JFQ, Moreira FA, Ferreira AJ, Fontes MAP. Angiotensin-converting enzyme 2 activator, DIZE in the basolateral amygdala attenuates the tachycardic response to acute stress by modulating glutamatergic tone. Neuropeptides 2020; 83:102076. [PMID: 32800589 DOI: 10.1016/j.npep.2020.102076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 07/03/2020] [Accepted: 08/02/2020] [Indexed: 02/07/2023]
Abstract
The basolateral amygdala (BLA) is critical in the control of the sympathetic output during stress. Studies demonstrated the involvement of the renin-angiotensin system components in the BLA. Angiotensin-(1-7) [Ang-(1-7)], acting through Mas receptors, reduces stress effects. Considering that angiotensin-converting enzyme 2 (ACE2) is the principal enzyme for the production of Ang-(1-7), here we evaluate the cardiovascular reactivity to acute stress after administration of the ACE2 activator, diminazene aceturate (DIZE) into the BLA. We also tested whether systemic treatment with DIZE could modify synaptic activity in the BLA and its effect directly on the expression of the N-methyl-d-aspartate receptors (NMDARs) in NG108 neurons in-vitro. Administration of DIZE into the BLA (200 pmol/100 nL) attenuated the tachycardia to stress (ΔHR, bpm: vehicle = 103 ± 17 vs DIZE = 49 ± 7 p = 0.018); this effect was inhibited by Ang-(1-7) antagonist, A-779 (ΔHR, bpm: DIZE = 49 ± 7 vs A-779 + DIZE = 100 ± 15 p = 0.04). Systemic treatment with DIZE attenuated the excitatory synaptic activity in the BLA (Frequency (Hz): vehicle = 2.9 ± 0.4 vs. DIZE =1.8 ± 0.3 p < 0.04). NG108 cells treated with DIZE demonstrated decreased expression of l subunit NMDAR-NR1 (NR1 expression (a.u): control = 0.534 ± 0.0593 vs. DIZE = 0.254 ± 0.0260) of NMDAR and increases of Mas receptors expression. These data demonstrate that DIZE attenuates the tachycardia evoked by acute stress. This effect results from a central action in the BLA involving activation of Mas receptors. The ACE2 activation via DIZE treatment attenuated the frequency of excitatory synaptic activity in the basolateral amygdala and this effect can be related with the decreases of the NMDAR-NR1 receptor expression.
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Affiliation(s)
- Carina Cunha Silva
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ana Maria Bernal Correa
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Christopher Kushmerick
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Neeru M Sharma
- Department of Cellular & Integrative Physiology, College of Medicine, University of Nebraska Medical Center, Omaha, United States
| | - Kaushik P Patel
- Department of Cellular & Integrative Physiology, College of Medicine, University of Nebraska Medical Center, Omaha, United States
| | | | - Fabrício A Moreira
- Departamento de Farmacologia, Instituto de Ciências Biológicas Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Anderson José Ferreira
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Marco Antônio Peliky Fontes
- Departamento de Fisiologia e Biofísica, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil..
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Sokolov AV, Kostin NN, Ovchinnikova LA, Lomakin YA, Kudriaeva AA. Targeted Drug Delivery in Lipid-like Nanocages and Extracellular Vesicles. Acta Naturae 2019; 11:28-41. [PMID: 31413877 PMCID: PMC6643341 DOI: 10.32607/20758251-2019-11-2-28-41] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Indexed: 12/12/2022] Open
Abstract
The possibility of targeted drug delivery to a specific tissue, organ, or cell has opened new promising avenues in treatment development. The technology of targeted delivery aims to create multifunctional carriers that are capable of long circulation in the patient's organism and possess low toxicity at the same time. The surface of modern synthetic carriers has high structural similarity to the cell membrane, which, when combined with additional modifications, also promotes the transfer of biological properties in order to penetrate physiological barriers effectively. Along with artificial nanocages, further efforts have recently been devoted to research into extracellular vesicles that could serve as natural drug delivery vehicles. This review provides a detailed description of targeted delivery systems that employ lipid and lipid-like nanocages, as well as extracellular vesicles with a high level of biocompatibility, highlighting genetically encoded drug delivery vehicles.
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Affiliation(s)
- A. V. Sokolov
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16 /10, Moscow, 117997, Russia
| | - N. N. Kostin
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16 /10, Moscow, 117997, Russia
| | - L. A. Ovchinnikova
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16 /10, Moscow, 117997, Russia
| | - Y. A. Lomakin
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16 /10, Moscow, 117997, Russia
| | - A. A. Kudriaeva
- M.M. Shemyakin and Yu.A. Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str. 16 /10, Moscow, 117997, Russia
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15
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Mu H, Holm R. Solid lipid nanocarriers in drug delivery: characterization and design. Expert Opin Drug Deliv 2018; 15:771-785. [DOI: 10.1080/17425247.2018.1504018] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Huiling Mu
- Department of Pharmacy, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - René Holm
- Drug Product Development, Janssen Research and Development, Beerse, Belgium
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Banerjee S, Kundu A. Lipid-drug conjugates: a potential nanocarrier system for oral drug delivery applications. ACTA ACUST UNITED AC 2018; 26:65-75. [PMID: 30159763 PMCID: PMC6154489 DOI: 10.1007/s40199-018-0209-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/26/2018] [Indexed: 11/28/2022]
Abstract
Hydrophilic drugs are preferred candidates for most routes of drug administration, because of their enhanced solubility and dissolution under aqueous in vivo conditions. However, their hydrophilic nature also leads to decreased permeability across hydrophobic barriers. This is a severe limitation in situations where membrane permeability is the primary factor affecting bioavailability and efficacy of the drug. Highly impermeable cellular membranes or the tight endothelial junctions governing the blood-brain barrier are prime examples of this limitation. In other cases, decreased permeability across mucosal or epithelial membranes may require increased doses, which is an inefficient and potentially dangerous workaround. Covalent conjugation of hydrophilic drugs to hydrophobic moieties like short-chain lipids is a promising strategy for maintaining the critical balance between drug solubility and permeability. This article practically focuses on the production procedure of Lipid drug conjugates (LDCs), various formulation methodologies for preparing LDC nanoparticles with detailed about their in vitro physicochemical characterization at laboratory scale. Moreover, brief overviews on the role of LDCs in novel drug delivery applications as a substrate to various disease therapies are provided. Three dimensional (3-D) schematic representation of LDCs structures. ![]()
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Affiliation(s)
- Subham Banerjee
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER)-Guwahati, Guwahati, Assam, India.
| | - Amit Kundu
- School of Pharmacy, Sungkyunkwan Univerfsity, Seoul, South Korea
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17
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Ding Y, Nielsen KA, Nielsen BP, Bøje NW, Müller RH, Pyo SM. Lipid-drug-conjugate (LDC) solid lipid nanoparticles (SLN) for the delivery of nicotine to the oral cavity – Optimization of nicotine loading efficiency. Eur J Pharm Biopharm 2018; 128:10-17. [DOI: 10.1016/j.ejpb.2018.03.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 01/29/2018] [Accepted: 03/11/2018] [Indexed: 12/23/2022]
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Vincristine-loaded liposomes prepared by ion-paring techniques: Effect of lipid, pH and antioxidant on chemical stability. Eur J Pharm Sci 2017; 111:104-112. [PMID: 28964951 DOI: 10.1016/j.ejps.2017.09.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 09/17/2017] [Accepted: 09/26/2017] [Indexed: 11/20/2022]
Abstract
In the present study, vincristine (VCR)-loaded liposomes were designed by ion-pairing techniques and the model could be applied to investigate the effect of lipids on the degradation of vinca alkaloids, and how to weaken their influence by adjusting pH and adding antioxidants. It was found that there was a positive correlation between degree of degradation and the unsaturation extent of the phospholipids. In the phospholipid with the lowest oxidation index, only 6% of VCR was degraded in 6days at 37°C, whereas for the phospholipids with highest oxidation index, the degradation reached above 95% over the same time. At pH6.8 and 7.4, the degradation rate of VCR in the lipid membrane was significantly faster than that in aqueous solution, instead, at pH5.0. After the addition of butylated hydroxytoluene (BHT), butylated hydroxyanisole (BHA), tocopherol, ascorbate and tocopherol with ascorbate, the residual content of VCR after 6days was 79.9%, 78.1%, 7.1%, 89.6% and 94.6% respectively. It was speculated that VCR could be oxidized by hydrated peroxyl radicals, which formed from lipid peroxidation as well as nucleophilic substitution with peroxyl radicals in the dry state. Also, the antioxidants were shown to have different eliminating capacity on the peroxyl radicals whether hydrated or not, and the phenoxyl radicals generated from fat-soluble antioxidants may be potentially destabilizing to VCR. Therefore, for these two crucial reasons, the degradation of VCR was quite different when used with a combination of water and fat-soluble antioxidants, and thus provides the best protection for VCR.
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19
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Ma Y, He H, Fan W, Li Y, Zhang W, Zhao W, Qi J, Lu Y, Dong X, Wu W. In Vivo Fate of Biomimetic Mixed Micelles as Nanocarriers for Bioavailability Enhancement of Lipid-Drug Conjugates. ACS Biomater Sci Eng 2017; 3:2399-2409. [PMID: 33445298 DOI: 10.1021/acsbiomaterials.7b00380] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The transformation of lipid-based nanovehicles into mixed micelles (MMs) upon lipolysis plays an indispensable role in enhancement of the oral bioavailability of poorly water-soluble drugs. Therefore, this study employs biomimetic MMs as functional vehicles to enhance the oral bioavailability of the lipid conjugates of a model drug silybin. The main objective is to explore the in vivo fate and underlying mechanisms of facilitated absorption by MMs. Pharmacokinetics in rats indicate bioavailability enhancement by 7-9 folds as compared to a fast-release silybin solid dispersion formulation. Confocal laser scanning microscopy reveals evidence of cellular uptake of integral MMs into the cytoplasm of both Caco-2 and Caco-2/HT29-MTX coculture cells lines. The recovery of a definite amount of prototype silybin but negligible or traces of lipid-silybin conjugates from the cells, as well as the limited trans-monolayer transport, confirms fast disruption of MMs and fast degradation of the conjugates as well. The MMs survive the gastrointestinal environment with relatively high integrity for about 4 h, and are found accumulating in intestinal villi surface layers in higher density but in lower density to the basolateral tissues. By scanning the organs, a small amount of integral MMs are observed to distribute mainly to the livers with peak time around 4-8 h. The total amount of lymphatic absorption monitored by cannulation is negligible. It is concluded that biomimetic MMs might be taken up by enterocytes and be digested there to release the prototype drug, which is further transported to the circulation, and only a limited amount of integral MMs could be absorbed into the circulation.
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Affiliation(s)
- Yuhua Ma
- Key Laboratory for Tibet Plateau Phytochemistry of Qinghai Province, School of Pharmacy, Qinghai Nationalities University, Xining 810007, China.,Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Haisheng He
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Wufa Fan
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yingxia Li
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Wei Zhang
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Weili Zhao
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Jianping Qi
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Yi Lu
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Xiaochun Dong
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
| | - Wei Wu
- Key Laboratory of Smart Drug Delivery of MOE and PLA, School of Pharmacy, Fudan University, Shanghai 201203, China
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20
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In vivo fate of lipid-silybin conjugate nanoparticles: Implications on enhanced oral bioavailability. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2643-2654. [PMID: 28778838 DOI: 10.1016/j.nano.2017.07.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 07/19/2017] [Accepted: 07/24/2017] [Indexed: 11/20/2022]
Abstract
Lipid-drug conjugates (LDCs) of a poorly soluble and poorly permeable drug silybin (SB) and lipids with different chain lengths (6C, 12C, 18C) are synthesized and formulated into solid lipid nanoparticles (SLNs). The in vivo fate of LDCs as well as SLNs is investigated by tracking either SB or LDCs or SLNs. LDCs are prone to be hydrolyzed by lipases either in simulated gastrointestinal media or in Caco-2 cell lines in a lipid chain length-dependent mode. The oral bioavailability of SB is enhanced by 5-7-fold in comparison with a fast-release formulation. No integral LDCs are detected in plasma confirms the readily degradable nature of LDCs. The absorption of LDCs by enteric epithelia and subsequent transportation into circulation might play a leading role in absorption enhancement, whereas the contribution of then M-cell pathway is not as remarkable. A shorter lipid chain favors earlier lipolysis and faster absorption along the intestine-to-circulation path.
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21
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Adhikari P, Pal P, Das AK, Ray S, Bhattacharjee A, Mazumder B. Nano lipid-drug conjugate: An integrated review. Int J Pharm 2017; 529:629-641. [DOI: 10.1016/j.ijpharm.2017.07.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Revised: 07/10/2017] [Accepted: 07/11/2017] [Indexed: 10/19/2022]
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22
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Xu H, Zhang L, Li L, Liu Y, Chao Y, Liu X, Jin Z, Chen Y, Tang X, He H, Kan Q, Cai C. Membrane-Loaded Doxorubicin Liposomes Based on Ion-Pairing Technology with High Drug Loading and pH-Responsive Property. AAPS PharmSciTech 2017; 18:2120-2130. [PMID: 28028795 DOI: 10.1208/s12249-016-0693-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 12/11/2016] [Indexed: 01/07/2023] Open
Abstract
In order to achieve high drug loading and high entrapment efficiency, a doxorubicin-cholesteryl hemisuccinate ion-pair complex (DCHIP) was formed, and the ion-pair complex liposomes (DCHIP-Lip) were prepared based on conventional thin-film dispersion method. Firstly, DCHIP was fabricated and confirmed with FTIR, 1H-NMR, DSC, and XRD techniques. Afterwards, DCHIP-Lip were prepared and evaluated in terms of particle size, zeta potential, entrapment efficiency, and drug loading content. Finally, the in vitro and in vivo behavior of liposomes was further investigated. The DCHIP-Lip had a nanoscale particle size of about 120 nm with a negative zeta potential of about -22 mV. In addition, the entrapment efficiency and drug loading content of DOX reached 6.4 ± 0.05 and 99.29 ± 0.3%, respectively. Importantly, the release of DCHIP-Lip was pH sensitive and increased cell toxicity against MCF-7 cells was achieved. Upon dilution, the liposomes were fairly stable under physiological conditions. The in vivo pharmacokinetic study indicated that the AUC of DOX in DCHIP-Lip was 11.48-fold higher than that of DOX-HCl solution and the in vivo antitumor activity of DCHIP-Lip showed less body weight loss and a significant prohibition effect of tumor growth. Based on these findings, it can be seen that the ion-pairing technology combined with conventional liposome drug loading method could be used to achieve high drug loading and it could be valuable for the study of liposomal delivery system.
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Pashirova TN, Zueva IV, Petrov KA, Babaev VM, Lukashenko SS, Rizvanov IK, Souto EB, Nikolsky EE, Zakharova LY, Masson P, Sinyashin OG. Nanoparticle-Delivered 2-PAM for Rat Brain Protection against Paraoxon Central Toxicity. ACS APPLIED MATERIALS & INTERFACES 2017; 9:16922-16932. [PMID: 28504886 DOI: 10.1021/acsami.7b04163] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Solid lipid nanoparticles (SLNs) are among the most promising nanocarriers to target the blood-brain barrier (BBB) for drug delivery to the central nervous system (CNS). Encapsulation of the acetylcholinesterase reactivator, pralidoxime chloride (2-PAM), in SLNs appears to be a suitable strategy for protection against poisoning by organophosphorus agents (OPs) and postexposure treatment. 2-PAM-loaded SLNs were developed for brain targeting and delivery via intravenous (iv) administration. 2-PAM-SLNs displayed a high 2-PAM encapsulation efficiency (∼90%) and loading capacity (maximum 30.8 ± 1%). Drug-loaded particles had a mean hydrodynamic diameter close to 100 nm and high negative zeta potential (-54 to -15 mV). These properties contribute to improve long-term stability of 2-PAM-SLNs when stored both at room temperature (22 °C) and at 4 °C, as well as to longer circulation time in the bloodstream compared to free 2-PAM. Paraoxon-poisoned rats (2 × LD50) were treated with 2-PAM-loaded SLNs at a dose of 2-PAM of 5 mg/kg. 2-PAM-SLNs reactivated 15% of brain AChE activity. Our results confirm the potential use of SLNs loaded with positively charged oximes as a medical countermeasure both for protection against OPs poisoning and for postexposure treatment.
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Affiliation(s)
- Tatiana N Pashirova
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
| | - Irina V Zueva
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
| | - Konstantin A Petrov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
- Kazan Federal University , 18 Kremlyovskaya Street, Kazan 420008, Russia
| | - Vasily M Babaev
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
| | - Svetlana S Lukashenko
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
| | - Ildar Kh Rizvanov
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
| | | | - Evgeny E Nikolsky
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
- Kazan State Medical University , 49 Butlerova Street, Kazan 420012, Russia
| | - Lucia Ya Zakharova
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
| | - Patrick Masson
- Kazan Federal University , 18 Kremlyovskaya Street, Kazan 420008, Russia
| | - Oleg G Sinyashin
- A. E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences , 8 Arbuzov Street, Kazan 420088, Russia
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Soni K, Mujtaba A, Kohli K. Lipid drug conjugate nanoparticle as a potential nanocarrier for the oral delivery of pemetrexed diacid: Formulation design, characterization, ex vivo, and in vivo assessment. Int J Biol Macromol 2017; 103:139-151. [PMID: 28499946 DOI: 10.1016/j.ijbiomac.2017.05.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 04/01/2017] [Accepted: 05/04/2017] [Indexed: 10/19/2022]
Abstract
The present work was to develop lipid drug conjugated (LDC) nanoparticles for the potential oral delivery of pemetrexed diacid (PTX) and evaluation of its in vitro, ex vivo and in vivo potentials. The LDC was prepared by salt formation of PTX with stearic acid and followed by cold homogenization technique to produce the LDC nanoparticles. FTIR analysis of LDC proved the presence of amide bond in LDC powder indicating the conjugation between drug and lipid. LDC nanoparticles was found to have particle size 121.9±1.85nm and zeta potential -51.6mV±1.23 and entrapment efficiency 81.0±0.89%. TEM images revealed spherical morphology and were in corroboration with particle size measurements. Ex vivo gut permeation studies revealed a very good enhancement in permeation of drug present in the LDC as compared to plain drug solution and were confirmed by CLSM. MTT assay conformed significant% toxicity at the end of 24h and 48h. Furthermore, the AUC0-24 of PTX from the optimized LDC nanoparticels was found to be 4.22 folds higher than that from PTX suspension on oral administration. Thus, LDC has high potential for the oral delivery of PTX in cancer therapy and future prospects for the industrial purpose.
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Affiliation(s)
- Kriti Soni
- Department of Pharmaceutics, Faculty of Pharmacy, Hamdard University, New Delhi-110062, India
| | - Ali Mujtaba
- Departments of Pharmaceutics, Faculty of Pharmacy, Northern Border University, Rafha, Saudi Arabia.
| | - Kanchan Kohli
- Department of Pharmaceutics, Faculty of Pharmacy, Hamdard University, New Delhi-110062, India.
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Chintamaneni PK, Krishnamurthy PT, Rao PV, Pindiprolu SS. Surface modified nano-lipid drug conjugates of positive allosteric modulators of M1 muscarinic acetylcholine receptor for the treatment of Alzheimer’s disease. Med Hypotheses 2017; 101:17-22. [DOI: 10.1016/j.mehy.2017.01.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 10/31/2016] [Accepted: 01/02/2017] [Indexed: 12/24/2022]
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26
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Couto R, Alvarez V, Temelli F. Encapsulation of Vitamin B2 in solid lipid nanoparticles using supercritical CO 2. J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2016.05.036] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Karamanidou T, Bourganis V, Kammona O, Kiparissides C. Lipid-based nanocarriers for the oral administration of biopharmaceutics. Nanomedicine (Lond) 2016; 11:3009-3032. [DOI: 10.2217/nnm-2016-0265] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Biopharmaceutics have been recognized as the drugs of choice for the treatment of several diseases, mainly due to their high selectivity and potent action. Nonetheless, their oral administration is a rather challenging problem, since their bioavailability is significantly hindered by various physiological barriers along the GI tract, including their acid-induced hydrolysis in the stomach, their enzymatic degradation throughout the GI tract and their poor mucosa permeability. Lipid-based nanocarriers represent a viable means for enhancing the oral bioavailability of biomolecules while diminishing toxicity-related issues. The present review describes the main physiological barriers limiting the oral bioavailability of macromolecules and highlights recent advances in the field of lipid-based carriers as well as the respective lipid intestinal absorption mechanisms.
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Affiliation(s)
- Theodora Karamanidou
- Department of Chemical Engineering, Aristotle University of Thessaloniki, PO Box 472, 54124 Thessaloniki, Greece
| | - Vassilis Bourganis
- Department of Chemical Engineering, Aristotle University of Thessaloniki, PO Box 472, 54124 Thessaloniki, Greece
| | - Olga Kammona
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, PO Box 60361, 57001 Thessaloniki, Greece
| | - Costas Kiparissides
- Department of Chemical Engineering, Aristotle University of Thessaloniki, PO Box 472, 54124 Thessaloniki, Greece
- Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas, PO Box 60361, 57001 Thessaloniki, Greece
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Ezzati Nazhad Dolatabadi J, Omidi Y. Solid lipid-based nanocarriers as efficient targeted drug and gene delivery systems. Trends Analyt Chem 2016. [DOI: 10.1016/j.trac.2015.12.016] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Staufenbiel S, Keck CM, Müller RH. The “Real Environment” Quantification of Surface Hydrophobicity of Differently Stabilized Nanocrystals as Key Parameter for Organ Distribution. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/masy.201400061] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sven Staufenbiel
- Freie Universität Berlin; Institute of Pharmacy; Pharmaceutics, Pharmaceutical Nanotechnology & NutriCosmetics; Berlin Germany
| | - Cornelia M. Keck
- Freie Universität Berlin; Institute of Pharmacy; Pharmaceutics, Pharmaceutical Nanotechnology & NutriCosmetics; Berlin Germany
| | - Rainer H. Müller
- Freie Universität Berlin; Institute of Pharmacy; Pharmaceutics, Pharmaceutical Nanotechnology & NutriCosmetics; Berlin Germany
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Adeyemi OS, Sulaiman FA. Evaluation of metal nanoparticles for drug delivery systems. J Biomed Res 2014; 29:145-9. [PMID: 25859270 PMCID: PMC4389115 DOI: 10.7555/jbr.28.20130096] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 07/15/2013] [Accepted: 03/10/2014] [Indexed: 11/21/2022] Open
Abstract
Diminazene aceturate is a trypanocide with unwanted toxicity and limited efficacy. It was reasoned that conjugating diminazene aceturate to functionalized nanoparticle would lower untoward toxicity while improving selectivity and therapeutic efficacy. Silver and gold nanoparticles were evaluated for their capacities to serve as carriers for diminazene aceturate. The silver and gold nanoparticles were synthesized, functionalized and coupled to diminazene aceturate following established protocols. The nanoparticle conjugates were characterized. The free diminazene aceturate and drug conjugated nanoparticles were subsequently evaluated for cytotoxicity in vitro. The characterizations by transmission electron microscopy or UV/Vis spectroscopy revealed that conjugation of diminazene aceturate to silver or gold nanoparticles was successful. Evaluation for cytotoxic actions in vitro demonstrated no significance difference between free diminazene aceturate and the conjugates. Our data suggest that surface modified metal nanoparticles could be optimized for drug delivery systems.
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Affiliation(s)
- Oluyomi S Adeyemi
- Department of Biological Sciences, Landmark University, Omu-Aran, Kwara State, Nigeria
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Patel MN, Lakkadwala S, Majrad MS, Injeti ER, Gollmer SM, Shah ZA, Boddu SHS, Nesamony J. Characterization and evaluation of 5-fluorouracil-loaded solid lipid nanoparticles prepared via a temperature-modulated solidification technique. AAPS PharmSciTech 2014; 15:1498-508. [PMID: 25035070 DOI: 10.1208/s12249-014-0168-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Accepted: 05/14/2014] [Indexed: 01/09/2023] Open
Abstract
The aim of this research was to advance solid lipid nanoparticle (SLN) preparation methodology by preparing glyceryl monostearate (GMS) nanoparticles using a temperature-modulated solidification process. The technique was reproducible and prepared nanoparticles without the need of organic solvents. An anticancer agent, 5-fluorouracil (5-FU), was incorporated in the SLNs. The SLNs were characterized by particle size analysis, zeta potential analysis, differential scanning calorimetry (DSC), infrared spectroscopy, atomic force microscopy (AFM), transmission electron microscopy (TEM), drug encapsulation efficiency, in vitro drug release, and in vitro cell viability studies. Particle size of the SLN dispersion was below 100 nm, and that of redispersed lyophilizates was ~500 nm. DSC and infrared spectroscopy suggested that the degree of crystallinity did not decrease appreciably when compared to GMS. TEM and AFM images showed well-defined spherical to oval particles. The drug encapsulation efficiency was found to be approximately 46%. In vitro drug release studies showed that 80% of the encapsulated drug was released within 1 h. In vitro cell cultures were biocompatible with blank SLNs but demonstrated concentration-dependent changes in cell viability to 5-FU-loaded SLNs. The 5-FU-loaded SLNs can potentially be utilized in an anticancer drug delivery system.
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Lipid nanoparticles as carriers for RNAi against viral infections: current status and future perspectives. BIOMED RESEARCH INTERNATIONAL 2014; 2014:161794. [PMID: 25184135 PMCID: PMC4145386 DOI: 10.1155/2014/161794] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 07/14/2014] [Accepted: 07/14/2014] [Indexed: 12/15/2022]
Abstract
The efforts made to develop RNAi-based therapies have led to productive research in the field of infections in humans, such as hepatitis C virus (HCV), hepatitis B virus (HBV), human immunodeficiency virus (HIV), human cytomegalovirus (HCMV), herpetic keratitis, human papillomavirus, or influenza virus. Naked RNAi molecules are rapidly digested by nucleases in the serum, and due to their negative surface charge, entry into the cell cytoplasm is also hampered, which makes necessary the use of delivery systems to exploit the full potential of RNAi therapeutics. Lipid nanoparticles (LNP) represent one of the most widely used delivery systems for in vivo application of RNAi due to their relative safety and simplicity of production, joint with the enhanced payload and protection of encapsulated RNAs. Moreover, LNP may be functionalized to reach target cells, and they may be used to combine RNAi molecules with conventional drug substances to reduce resistance or improve efficiency. This review features the current application of LNP in RNAi mediated therapy against viral infections and aims to explore possible future lines of action in this field.
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Cooper DL, Conder CM, Harirforoosh S. Nanoparticles in drug delivery: mechanism of action, formulation and clinical application towards reduction in drug-associated nephrotoxicity. Expert Opin Drug Deliv 2014; 11:1661-80. [PMID: 25054316 DOI: 10.1517/17425247.2014.938046] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Over the past few decades, nanoparticles (NPs) have gained immeasurable interest in the field of drug delivery. Various NP formulations have been disseminated in drug development in an attempt to increase efficacy, safety and tolerability of incorporated drugs. In this context, NP formulations that increase solubility, control release, and/or affect the in vivo disposition of drugs, were developed to improve the pharmacokinetic and pharmacodynamic properties of encapsulated drugs. AREAS COVERED In this article, important properties related to NP function such as particle size, surface charge and shape are disseminated. Also, the current understanding of how NP characteristics affect particle uptake and targeted delivery is elucidated. Selected NP systems currently used in delivery of drugs in biological systems and their production methods are discussed as well. Emphasis is placed on current NP formulations that are shown to reduce drug-induced adverse renal complications. EXPERT OPINION Formulation designs utilizing NP-encapsulated drugs offer alternative pharmacotherapy options with improved safety profiles for current and emerging drugs. NPs have been shown to increase the therapeutic index of several entrapped drugs mostly by decreasing drug localization and side effects on organs. Recent studies on NP-encapsulated chemotherapeutic and antibiotic medications show enhanced therapeutic outcomes by altering drug degradation, increasing systemic circulation and/or enhancing cell specific targeting. They may also reduce the distribution of encapsulated drugs into the kidneys and attenuate drug-associated adverse renal complications. The usefulness of NP formulation in reducing the nephrotoxicity of nonsteroidal anti-inflammatory drugs is an under explored territory that deserves more attention.
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Affiliation(s)
- Dustin L Cooper
- East Tennessee State University, Gatton College of Pharmacy, Department of Pharmaceutical Sciences , Johnson City, TN 37614 , USA
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Vidu R, Rahman M, Mahmoudi M, Enachescu M, Poteca TD, Opris I. Nanostructures: a platform for brain repair and augmentation. Front Syst Neurosci 2014; 8:91. [PMID: 24999319 PMCID: PMC4064704 DOI: 10.3389/fnsys.2014.00091] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 04/30/2014] [Indexed: 01/04/2023] Open
Abstract
Nanoscale structures have been at the core of research efforts dealing with integration of nanotechnology into novel electronic devices for the last decade. Because the size of nanomaterials is of the same order of magnitude as biomolecules, these materials are valuable tools for nanoscale manipulation in a broad range of neurobiological systems. For instance, the unique electrical and optical properties of nanowires, nanotubes, and nanocables with vertical orientation, assembled in nanoscale arrays, have been used in many device applications such as sensors that hold the potential to augment brain functions. However, the challenge in creating nanowires/nanotubes or nanocables array-based sensors lies in making individual electrical connections fitting both the features of the brain and of the nanostructures. This review discusses two of the most important applications of nanostructures in neuroscience. First, the current approaches to create nanowires and nanocable structures are reviewed to critically evaluate their potential for developing unique nanostructure based sensors to improve recording and device performance to reduce noise and the detrimental effect of the interface on the tissue. Second, the implementation of nanomaterials in neurobiological and medical applications will be considered from the brain augmentation perspective. Novel applications for diagnosis and treatment of brain diseases such as multiple sclerosis, meningitis, stroke, epilepsy, Alzheimer's disease, schizophrenia, and autism will be considered. Because the blood brain barrier (BBB) has a defensive mechanism in preventing nanomaterials arrival to the brain, various strategies to help them to pass through the BBB will be discussed. Finally, the implementation of nanomaterials in neurobiological applications is addressed from the brain repair/augmentation perspective. These nanostructures at the interface between nanotechnology and neuroscience will play a pivotal role not only in addressing the multitude of brain disorders but also to repair or augment brain functions.
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Affiliation(s)
- Ruxandra Vidu
- Department of Chemical Engineering and Materials Science, University of California DavisDavis, CA, USA
| | - Masoud Rahman
- Department of Chemical Engineering and Materials Science, University of California DavisDavis, CA, USA
| | - Morteza Mahmoudi
- Department of Nanotechnology and Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical SciencesTehran, Iran
| | - Marius Enachescu
- Center for Surface Science and Nanotechnology, University “Politehnica” BucharestBucharest, Romania
- Academy of Romanian ScientistsBucharest, Romania
| | - Teodor D. Poteca
- Carol Davila University of Medicine and PharmacyBucharest, Romania
| | - Ioan Opris
- Wake Forest University Health SciencesWinston-Salem, NC, USA
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Kathe N, Henriksen B, Chauhan H. Physicochemical characterization techniques for solid lipid nanoparticles: principles and limitations. Drug Dev Ind Pharm 2014; 40:1565-75. [DOI: 10.3109/03639045.2014.909840] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Neupane YR, Sabir MD, Ahmad N, Ali M, Kohli K. Lipid drug conjugate nanoparticle as a novel lipid nanocarrier for the oral delivery of decitabine: ex vivo gut permeation studies. NANOTECHNOLOGY 2013; 24:415102. [PMID: 24061410 DOI: 10.1088/0957-4484/24/41/415102] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The purpose of this study was to develop lipid drug conjugate (LDC) nanoparticles of decitabine (DCB) using stearic acid as a lipid to increase the permeability of the drug along with its protection from chemical degradation. The LDC was prepared by salt formation of DCB with stearic acid and followed by cold homogenization technique to produce the LDC nanoparticles. The role of key independent variables influencing on dependent variables were determined by using a Box-Behnken design. The optimized batch revealed spherical morphology under TEM analysis with particle size of 202.6 ± 1.65 nm and 0.334 ± 0.987 PDI. The zeta potential and %EE were found to be -33.6 ± 0.845 mV and 68.89% ± 0.59 respectively. Lyophilized powder showed the crystalline structure under DSC analysis. In vitro release studies showed the initial burst release followed by a sustained release up to 24 h in PBS pH 7.4 and the data were further studied using release kinetic models which revealed the first-order model as a best-fitting model. Ex vivo gut permeation studies proved that the formulation containing lipid and surfactants has a higher permeability than the plain drug solution with nearly fourfold increase in the apparent permeability coefficients. Finally, LDC nanoparticles prepared by using stearic acid as a lipid and surfactants as Tween 80, Poloxamer 188, and Labrasol in equal ratio possess high potential for the oral delivery of hydrophilic drugs.
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Affiliation(s)
- Yub Raj Neupane
- Department of Pharmaceutics, Faculty of Pharmacy, Jamia Hamdard University, New Delhi-110062, India
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Andreozzi E, Wang P, Valenzuela A, Tu C, Gorin F, Dhenain M, Louie A. Size-Stable Solid Lipid Nanoparticles Loaded with Gd-DOTA for Magnetic Resonance Imaging. Bioconjug Chem 2013; 24:1455-67. [DOI: 10.1021/bc300605f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Erica Andreozzi
- Department of Biomedical Engineering, University of California Davis, Davis,
California 95616, United States
| | - Peter Wang
- Department of Biomedical Engineering, University of California Davis, Davis,
California 95616, United States
| | - Anthony Valenzuela
- Department of Neurology, School of Medicine, University of California Davis,
4860 Y Street, #3700, Sacramento, California 95817, United States
| | - Chuqiao Tu
- Department of Biomedical Engineering, University of California Davis, Davis,
California 95616, United States
| | - Fredric Gorin
- Department of Neurology, School of Medicine, University of California Davis,
4860 Y Street, #3700, Sacramento, California 95817, United States
| | - Marc Dhenain
- CNRS, URA CEA CNRS 2210, 18 route du Panorama, 92265 Fontenay aux Roses,
France
- CEA, DSV, I2BM, MIRCen, 18 Route du Panorama, 92265
Fontenay aux
Roses, France
| | - Angelique Louie
- Department of Biomedical Engineering, University of California Davis, Davis,
California 95616, United States
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Shah M, Agrawal YK, Garala K, Ramkishan A. Solid lipid nanoparticles of a water soluble drug, ciprofloxacin hydrochloride. Indian J Pharm Sci 2013; 74:434-42. [PMID: 23716872 PMCID: PMC3660870 DOI: 10.4103/0250-474x.108419] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2011] [Revised: 10/24/2012] [Accepted: 10/26/2012] [Indexed: 11/25/2022] Open
Abstract
The aim of this study was to understand and investigate the relationship between experimental factors and their responses in the preparation of ciprofloxacin hydrochloride based solid lipid nanoparticles. A quadratic relationship was studied by developing central composite rotatable design. Amount of lipid and drug, stirring speed and stirring time were selected as experimental factors while particle size, zeta potential and drug entrapment were used as responses. Prior to the experimental design, a qualitative prescreening study was performed to check the effect of various solid lipids and their combinations. Results showed that changing the amount of lipid, stirring speed and stirring time had a noticeable influence on the entrapment efficiencies and particle size of the prepared solid lipid nanoparticles. The particle size of a solid lipid nanoparticle was in the range of 159-246 nm and drug encapsulation efficiencies were marginally improved by choosing a binary mixture of physically incompatible solid lipids. Release of ciprofloxacin hydrochloride from solid lipid nanoparticle was considerably slow, and it shows Higuchi matrix model as the best fitted model. Study of solid lipid nanoparticle suggested that the lipid based carrier system could potentially be exploited as a delivery system with improved drug entrapment efficiency and controlled drug release for water soluble actives.
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Affiliation(s)
- M Shah
- Gujarat Forensic Sciences University, Institute of Research and Development, Near Police Bhavan, Sector 18A, Gandhinagar-382 007, India
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Zhao H, Lu H, Gong T, Zhang Z. Nanoemulsion loaded with lycobetaine-oleic acid ionic complex: physicochemical characteristics, in vitro, in vivo evaluation, and antitumor activity. Int J Nanomedicine 2013; 8:1959-73. [PMID: 23723698 PMCID: PMC3666662 DOI: 10.2147/ijn.s43892] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Background Intravenous injection of lycobetaine was found to show significant cytotoxic activity against (inter alia) Lewis lung carcinoma, but its therapeutic use is largely limited due to an extremely short half-life in blood. This study aimed at developing a novel lipid nanocarrier-based formulation for lycobetaine delivery. The formulation is feasible for scale-up production, exhibiting good parenteral acceptability and improved circulation characteristics. Methods To enhance its lipophilicity, oleic acid was selected to form ionic complexes with lycobetaine (LBT). The nanoemulsion loaded with LBT–oleic acid complex (LBT–OA–nanoemulsion) and PEGylated LBT–OA–nanoemulsion (NE) (LBT–OA–PEG–NE) were prepared by a simple high-pressure homogenization method. Results A high-encapsulation efficiency of around 97.32% ± 2.09% was obtained for LBT–OA–PEG–NE under optimized conditions. Furthermore, the in vivo pharmacokinetics and biodistribution of LBT–OA–NE, LBT–OA–PEG–NE, and free LBT were studied in rats. Free LBT and LBT–OA–PEG–NE displayed AUC0–10h (area under the concentration-time curve from 0 to 10 hours) of 112.99 mg/L*minute and 3452.09 mg/L*minute via intravenous administration (P < 0.005), respectively. Moreover, LBT–OA–PEG–NE showed significantly lower LBT concentration in the heart, liver, and kidney, while achieving higher concentration of LBT in the lung when compared to free LBT at the same time (P < 0.005). The LBT–OA–PEG–NE exhibited higher growth inhibitory effect and longer survival time than free LBT in both heterotopic and lung metastatic tumor models. Conclusion These results demonstrated that LBT–OA–PEG–NE is an attractive parenteral formulation for cancer therapy.
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Affiliation(s)
- Hui Zhao
- Key Laboratory of Drug Targeting, Ministry of Education, Sichuan University, Chengdu, People's Republic of China
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Kumar S, Randhawa JK. High melting lipid based approach for drug delivery: Solid lipid nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1842-52. [DOI: 10.1016/j.msec.2013.01.037] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 01/11/2013] [Accepted: 01/16/2013] [Indexed: 12/13/2022]
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Silva AH, Locatelli C, Filippin-Monteiro FB, Zanetti-Ramos BG, Conte A, Creczynski-Pasa TB. Solid lipid nanoparticles induced hematological changes and inflammatory response in mice. Nanotoxicology 2013; 8:212-9. [PMID: 23451884 DOI: 10.3109/17435390.2013.782076] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Solid lipid nanoparticles (SLNs) are an alternative drug delivery system compared to emulsions, liposomes and polymeric nanoparticles. Due to their unique sizes and properties, SLNs offer possibility to develop new therapeutic approaches. The ability to incorporate drugs into nanocarriers offers a new prototype in drug delivery that could be used for drug targeting. However, toxicity of these new formulations has not been investigated thus far. In this study, we carried out an in vivo toxicity study. For that mice were divided into three groups and treated intraperitoneally with triestearin-based SLNs (TN), natural wax-based SLNs (VN) or vehicle for 10 days. After that, necropsies, histopathological and hematological analysis, as well as hepatic and renal functions were performed. Our results indicated that both TN and VN were absorbed post-exposure and induced an inflammatory response in adipose tissue. However, histopathological analysis demonstrated the absence of toxicity in both treated groups. In addition, the body weights were similar among the groups and low toxicity was also indicated by the unchanged serum biochemical parameters. This study provides a preliminary data for toxicological studies of two different SLNs in long-term in vivo exposure. However, further studies should be conducted in order to investigate the inflammatory response in order to establish the safety of these SLNs.
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Affiliation(s)
- Adny Henrique Silva
- Departamento de Ciências Farmacêuticas, Universidade Federal de Santa Catarina , P.O. Box 476, Florianópolis, SC , Brazil
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del Pozo-Rodríguez A, Delgado D, Gascón AR, Solinís MÁ. Lipid Nanoparticles as Drug/Gene Delivery Systems to the Retina. J Ocul Pharmacol Ther 2013; 29:173-88. [DOI: 10.1089/jop.2012.0128] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Affiliation(s)
- Ana del Pozo-Rodríguez
- Pharmacokinetics, Nanotechnology and Gene Therapy Group, Pharmacy Faculty, Laboratory of Pharmacy and Pharmaceutical Technology, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
| | - Diego Delgado
- Pharmacokinetics, Nanotechnology and Gene Therapy Group, Pharmacy Faculty, Laboratory of Pharmacy and Pharmaceutical Technology, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
| | - Alicia R. Gascón
- Pharmacokinetics, Nanotechnology and Gene Therapy Group, Pharmacy Faculty, Laboratory of Pharmacy and Pharmaceutical Technology, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
| | - Maria Ángeles Solinís
- Pharmacokinetics, Nanotechnology and Gene Therapy Group, Pharmacy Faculty, Laboratory of Pharmacy and Pharmaceutical Technology, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain
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Pharmacokinetics, tissue distribution and relative bioavailability of isoniazid-solid lipid nanoparticles. Int J Pharm 2012; 441:202-12. [PMID: 23220081 DOI: 10.1016/j.ijpharm.2012.11.042] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/27/2012] [Accepted: 11/28/2012] [Indexed: 01/24/2023]
Abstract
Low levels of isoniazid gain access into plasma following oral administration due to its high aqueous solubility, poor permeability and rapid and extensive hepatic metabolism. Further, a small t(1/2) of 1-4 h indicates its short stay in plasma and the need for repetitive or high doses which may subsequently result in hepatotoxicity and neurotoxicity associated with its use. Isoniazid-solid lipid nanoparticles (SLNs) were prepared to achieve improved bioavailability and prolonged effect, thus minimizing pulsatile plasma concentrations (and associated side effects at peak plasma concentrations). Developed SLNs showed high entrapment efficiency (69%) and small size (d(90) 48.4 nm) such that they are expected to bypass reticulo-endothelial system (RES) pickup resulting in prolonged circulation times and since liver is the major site of metabolism of isoniazid, RES avoidance will reduce its elimination from the body. Single dose (25 mg/kg BW) oral pharmacokinetic studies were performed in plasma and various tissues of rats. A significant improvement (p<0.001) in relative bioavailability in plasma (6 times) and brain (4 times) was observed after administration of isoniazid-SLNs with respect to the free drug solution at the same dose. Insignificant changes in liver concentration coupled with bypass of first pass metabolism and slow release of isoniazid (60%, in 24 h) indicate low incidence of hepatotoxicity. Isoniazid-SLNs showed a 3 times higher LD50.
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Krol S, Macrez R, Docagne F, Defer G, Laurent S, Rahman M, Hajipour MJ, Kehoe PG, Mahmoudi M. Therapeutic Benefits from Nanoparticles: The Potential Significance of Nanoscience in Diseases with Compromise to the Blood Brain Barrier. Chem Rev 2012; 113:1877-903. [DOI: 10.1021/cr200472g] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Silke Krol
- Fondazione IRCCS Institute of Neurology “Carlo Besta”, Milan, Italy
| | - Richard Macrez
- Inserm U919, University Caen Basse Normandie, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP CYCERON, F-14074 Caen, France
- Department of Neurology, University Hospital of Caen, Caen, France
| | - Fabian Docagne
- Inserm U919, University Caen Basse Normandie, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP CYCERON, F-14074 Caen, France
| | - Gilles Defer
- Inserm U919, University Caen Basse Normandie, Serine Proteases and Pathophysiology of the Neurovascular Unit, GIP CYCERON, F-14074 Caen, France
- Department of Neurology, University Hospital of Caen, Caen, France
| | - Sophie Laurent
- Department of General, Organic, and Biomedical Chemistry, NMR and Molecular Imaging Laboratory, University of Mons, Avenue Maistriau, 19, B-7000 Mons, Belgium
| | - Masoud Rahman
- Laboratory of NanoBio Interactions , Department of Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad J. Hajipour
- Laboratory of NanoBio Interactions , Department of Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Patrick G. Kehoe
- Dementia Research Group, School of Clinical Sciences, Faculty of Medicine and Dentistry, University of Bristol, John James Laboratories, Frenchay Hospital, Bristol, U.K
| | - Morteza Mahmoudi
- Laboratory of NanoBio Interactions , Department of Nanotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
- Current address: School of Chemical Sciences, University of Illinois at Urbana−Champaign, 600 South Mathews Avenue, Urbana, Illinois 61801, United States
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Shah M, Agrawal Y. Ciprofloxacin hydrochloride-loaded glyceryl monostearate nanoparticle: factorial design of Lutrol F68 and Phospholipon 90G. J Microencapsul 2012; 29:331-43. [DOI: 10.3109/02652048.2011.651498] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Xie S, Wang F, Wang Y, Zhu L, Dong Z, Wang X, Li X, Zhou W. Acute toxicity study of tilmicosin-loaded hydrogenated castor oil-solid lipid nanoparticles. Part Fibre Toxicol 2011; 8:33. [PMID: 22098626 PMCID: PMC3253047 DOI: 10.1186/1743-8977-8-33] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Accepted: 11/20/2011] [Indexed: 12/02/2022] Open
Abstract
BACKGROUND Our previous studies demonstrated that tilmicosin-loaded hydrogenated castor oil solid lipid nanoparticles (Til-HCO-SLN) are a promising formulation for enhanced pharmacological activity and therapeutic efficacy in veterinary use. The purpose of this work was to evaluate the acute toxicity of Til-HCO-SLN. METHODS Two nanoparticle doses were used for the study in ICR mice. The low dose (766 mg/kg.bw) with tilmicosin 7.5 times of the clinic dosage and below the median lethal dose (LD(50)) was subcutaneously administered twice on the first and 7th day. The single high dose (5 g/kg.bw) was the practical upper limit in an acute toxicity study and was administered subcutaneously on the first day. Blank HCO-SLN, native tilmicosin, and saline solution were included as controls. After medication, animals were monitored over 14 days, and then necropsied. Signs of toxicity were evaluated via mortality, symptoms of treatment effect, gross and microscopic pathology, and hematologic and biochemical parameters. RESULTS After administration of native tilmicosin, all mice died within 2 h in the high dose group, in the low dose group 3 died after the first and 2 died after the second injections. The surviving mice in the tilmicosin low dose group showed hypoactivity, accelerated breath, gloomy spirit and lethargy. In contrast, all mice in Til-HCO-SLN and blank HCO-SLN groups survived at both low and high doses. The high nanoparticle dose induced transient clinical symptoms of treatment effect such as transient reversible action retardation, anorexy and gloomy spirit, increased spleen and liver coefficients and decreased heart coefficients, microscopic pathological changes of liver, spleen and heart, and minor changes in hematologic and biochemical parameters, but no adverse effects were observed in the nanoparticle low dose group. CONCLUSIONS The results revealed that the LD50 of Til-HCO-SLN and blank HCO-SLN exceeded 5 g/kg.bw and thus the nanoparticles are considered low toxic according to the toxicity categories of chemicals. Moreover, HCO-SLN significantly decreased the toxicity of tilmicosin. Normal clinic dosage of Til-HCO-SLN is safe as evaluated by acute toxicity.
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Affiliation(s)
- Shuyu Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
| | - Fenghua Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
| | - Yan Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
| | - Luyan Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
| | - Zhao Dong
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
| | - Xiaofang Wang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
| | - Xihe Li
- Inner Mongolia Saikexing Reproductive Biotechnology Co. Ltd./Inner Mongolia University College of Life Sciences, Mengniu Dary R&D Center, Shengle Economic District, Helin Geer, Huhhot, Inner Mongolia 011517, PR China
| | - WenZhong Zhou
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, China Agricultural University, 2 Yuanmingyuan Road West, Beijing 100193, PR China
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Walkey CD, Chan WCW. Understanding and controlling the interaction of nanomaterials with proteins in a physiological environment. Chem Soc Rev 2011; 41:2780-99. [PMID: 22086677 DOI: 10.1039/c1cs15233e] [Citation(s) in RCA: 1117] [Impact Index Per Article: 85.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Nanomaterials hold promise as multifunctional diagnostic and therapeutic agents. However, the effective application of nanomaterials is hampered by limited understanding and control over their interactions with complex biological systems. When a nanomaterial enters a physiological environment, it rapidly adsorbs proteins forming what is known as the protein 'corona'. The protein corona alters the size and interfacial composition of a nanomaterial, giving it a biological identity that is distinct from its synthetic identity. The biological identity determines the physiological response including signalling, kinetics, transport, accumulation, and toxicity. The structure and composition of the protein corona depends on the synthetic identity of the nanomaterial (size, shape, and composition), the nature of the physiological environment (blood, interstitial fluid, cell cytoplasm, etc.), and the duration of exposure. In this critical review, we discuss the formation of the protein corona, its structure and composition, and its influence on the physiological response. We also present an 'adsorbome' of 125 plasma proteins that are known to associate with nanomaterials. We further describe how the protein corona is related to the synthetic identity of a nanomaterial, and highlight efforts to control protein-nanomaterial interactions. We conclude by discussing gaps in the understanding of protein-nanomaterial interactions along with strategies to fill them (167 references).
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Affiliation(s)
- Carl D Walkey
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON M5S 3G9, Canada
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Kroubi M, Karembe H, Betbeder D. Drug delivery systems in the treatment of African trypanosomiasis infections. Expert Opin Drug Deliv 2011; 8:735-47. [DOI: 10.1517/17425247.2011.574122] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Andreozzi E, Seo JW, Ferrara K, Louie A. Novel method to label solid lipid nanoparticles with 64cu for positron emission tomography imaging. Bioconjug Chem 2011; 22:808-18. [PMID: 21388194 DOI: 10.1021/bc100478k] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Solid lipid nanoparticles (SLNs) are submicrometer (1-1000 nm) colloidal carriers developed in the past decade as an alternative system to traditional carriers (emulsions, liposomes, and polymeric nanoparticles) for intravenous applications. Because of their potential as drug carriers, there is much interest in understanding the in vivo biodistribution of SLNs following intravenous (i.v.) injection. Positron emission tomography (PET) is an attractive method for investigating biodistribution but requires a radiolabeled compound. In this work, we describe a method to radiolabel SLN for in vivo PET studies. A copper specific chelator, 6-[p-(bromoacetamido)benzyl]-1,4,8,11-tetraazacyclotetradecane-N,N',N'',N'''-tetraacetic acid (BAT), conjugated with a synthetic lipid, was incorporated into the SLN. Following incubation with (64)CuCl(2) for 1 h at 25 °C in 0.1 M NH(4)OAc buffer (pH 5.5), the SLNs (∼150 nm) were successfully radiolabeled with (64)Cu (66.5% radiolabeling yield), exhibiting >95% radiolabeled particles following purification. The (64)Cu-SLNs were delivered intravenously to mice and imaged with PET at 0.5, 3, 20, and 48 h post injection. Gamma counting was utilized post imaging to confirm organ distributions. Tissue radioactivity (% injected dose/gram, %ID/g), obtained by quantitative analysis of the images, suggests that the (64)Cu-SLNs are circulating in the bloodstream after 3 h (blood half-life ∼1.4 h), but are almost entirely cleared by 48 h. PET and gamma counting demonstrate that approximately 5-7%ID/g (64)Cu-SLNs remain in the liver at 48 h post injection. Stability assays confirm that copper remains associated with the SLN over the 48 h time period and that the biodistribution patterns observed are not from free, dissociated copper. Our results indicate that SLNs can be radiolabeled with (64)Cu, and their biodistribution can be quantitatively evaluated by in vivo PET imaging and ex vivo gamma counting.
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Affiliation(s)
- Erica Andreozzi
- Department of Biomedical Engineering, University of California , Davis, California, United States
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