Name: encapsulation of cancer therapeutic agent dacarbazine using nanostructured lipid carrier
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Description: Watch this Scientific Journal Video about Encapsulation of Cancer Therapeutic Agent Dacarbazine Using Nanostructured Lipid Carrier at JoVE.com

Forfatterne anerkender Saudi-Arabien-finansieret stipendium (I821) for at gøre forskningen muligt. Forfatterne er taknemmelige for Dr. Xianwei Liu for eksperthjælp i TEM analyse på Cranfield University.

1. Fremstilling af olie-i-vand-emulsion <ol><li> Afvej glycerylpalmitostearat (120 mg), isopropylmyristat (60 mg), d-α-tocopherylpolyethylenglycol succinat (30 mg) og sojabønnelecithin (30 mg), og tilføj dem til 12,5 ml af organiske opløsningsmidler (6,25 ml acetone og 6,25 ml ethanol). Hurtigt opløses blandingen ved temperaturen 70 ° C (5 ° C over smeltepunktet for det faste lipid) i vandbad. </li><li> Tilføj enten 125, 250 eller 375 mg Poloxamer188 i 12,5 ml Hedeselskabet 2 O at opnå 1-3% (henhol...

<ol>
	<li>Loo, T. L., Housholder, G. E., Gerulath, A. H., Saunders, P. H., Farquhar, D. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Mechanism+of+action+and+pharmacology+studies+with+DTIC+(NSC+45388).">Mechanism of action and pharmacology studies with DTIC (NSC 45388).</a> Cancer Treat Rep. 60 (2), 149-152 (1976).</li><li>Behringer, K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Omission+of+dacarbazine+or+bleomycin,+or+both,+from+the+ABVD+regimen+in+treatment+of+early-stage+favourable+Hodgkin's+lymphoma+(GHSG+HD13):+An+open-label,+randomised,+non-inferiority+trial.">Omission of dacarbazine or bleomycin, or both, from the ABVD regimen in treatment of early-stage favourable Hodgkin's lymphoma (GHSG HD13): An open-label, randomised, non-inferiority trial.</a> The Lancet. 385 (9976), 1418-1427 (2014).</li><li>Carvajal, R. D., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+phase+2+randomised+study+of+ramucirumab+(IMC-1121B)+with+or+without+dacarbazine+in+patients+with+metastatic+melanoma.">A phase 2 randomised study of ramucirumab (IMC-1121B) with or without dacarbazine in patients with metastatic melanoma.</a> Eur J Cancer. 50 (12), 2099-2107 (2014).</li><li>Jiang, G., Li, R., Sun, C., Liu, Y., Zheng, J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dacarbazine+combined+targeted+therapy+versus+dacarbazine+alone+in+patients+with+malignant+melanoma:+A+meta-analysis.">Dacarbazine combined targeted therapy versus dacarbazine alone in patients with malignant melanoma: A meta-analysis.</a> PLoS ONE. 9 (12), (2014).</li><li>Lazar, V., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Sorafenib+plus+dacarbazine+in+solid+tumors:+A+phase+i+study+with+dynamic+contrast-enhanced+ultrasonography+and+genomic+analysis+of+sequential+tumor+biopsy+samples.">Sorafenib plus dacarbazine in solid tumors: A phase i study with dynamic contrast-enhanced ultrasonography and genomic analysis of sequential tumor biopsy samples.</a> Invest New Drugs. 32 (2), 312-322 (2014).</li><li>Niemeijer, N. D., Alblas, G., Van Hulsteijn, L. T., Dekkers, O. M., Corssmit, E. P. M. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Chemotherapy+with+cyclophosphamide,+vincristine+and+dacarbazine+for+malignant+paraganglioma+and+pheochromocytoma:+Systematic+review+and+meta-analysis.">Chemotherapy with cyclophosphamide, vincristine and dacarbazine for malignant paraganglioma and pheochromocytoma: Systematic review and meta-analysis.</a> Clin Endocrinol (Oxf). 81 (5), 642-651 (2014).</li><li>Bedikian, A. Y., Garbe, C., Conry, R., Lebbe, C., Grob, J. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dacarbazine+with+or+without+oblimersen+(a+Bcl-2+antisense+oligonucleotide)+in+chemotherapy-naive+patients+with+advanced+melanoma+and+low-normal+serum+lactate+dehydrogenase:+'The+AGENDA+trial'.">Dacarbazine with or without oblimersen (a Bcl-2 antisense oligonucleotide) in chemotherapy-naive patients with advanced melanoma and low-normal serum lactate dehydrogenase: 'The AGENDA trial'.</a> Melanoma Res. 24 (3), 237-243 (2014).</li><li>Daponte, A., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Phase+III+randomized+study+of+fotemustine+and+dacarbazine+versus+dacarbazine+with+or+without+interferon-a+in+advanced+malignant+melanoma.">Phase III randomized study of fotemustine and dacarbazine versus dacarbazine with or without interferon-a in advanced malignant melanoma.</a> J Trans Med. 11 (1), (2013).</li><li>Jiao, J., Rhodes, D. G., Burgess, D. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multiple+Emulsion+Stability:+Pressure+Balance+and+Interfacial+Film+Strength.">Multiple Emulsion Stability: Pressure Balance and Interfacial Film Strength.</a> J Colloid Interface Sci. 250 (2), 444-450 (2002).</li><li>Kakumanu, S., Tagne, J. B., Wilson, T. A., Nicolosi, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=A+nanoemulsion+formulation+of+dacarbazine+reduces+tumor+size+in+a+xenograft+mouse+epidermoid+carcinoma+model+compared+to+dacarbazine+suspension.">A nanoemulsion formulation of dacarbazine reduces tumor size in a xenograft mouse epidermoid carcinoma model compared to dacarbazine suspension.</a> Nanomedicine. 7 (3), 277-283 (2011).</li><li>Xie, T., Nguyen, T., Hupe, M., Wei, M. L. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Multidrug+resistance+decreases+with+mutations+of+melanosomal+regulatory+genes.">Multidrug resistance decreases with mutations of melanosomal regulatory genes.</a> Cancer Res. 69 (3), 992-999 (2009).</li><li>Estanqueiro, M., Amaral, M. H., Concei&#231;&#227;o, J., Lobo, J. M. S. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanotechnological+carriers+for+cancer+chemotherapy:+the+state+of+the+art.">Nanotechnological carriers for cancer chemotherapy: the state of the art.</a> Colloids Surf., B. 126, 631-648 (2015).</li><li>Koziara, J. M., Whisman, T. R., Tseng, M. T., Mumper, R. J. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=In-vivo+efficacy+of+novel+paclitaxel+nanoparticles+in+paclitaxel-resistant+human+colorectal+tumors.">In-vivo efficacy of novel paclitaxel nanoparticles in paclitaxel-resistant human colorectal tumors.</a> J Controlled Release. 112 (3), 312-319 (2006).</li><li>Ding, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Biodegradable+methoxy+poly+(ethylene+glycol)-poly+(lactide)+nanoparticles+for+controlled+delivery+of+dacarbazine:+Preparation,+characterization+and+anticancer+activity+evaluation.">Biodegradable methoxy poly (ethylene glycol)-poly (lactide) nanoparticles for controlled delivery of dacarbazine: Preparation, characterization and anticancer activity evaluation.</a> Afr J Pharm Pharacol. 5 (11), 1369-1377 (2011).</li><li>Ding, B., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Anti-DR5+monoclonal+antibody-mediated+DTIC-loaded+nanoparticles+combining+chemotherapy+and+immunotherapy+for+malignant+melanoma:+target+formulation+development+and+in+vitro+anticancer+activity.">Anti-DR5 monoclonal antibody-mediated DTIC-loaded nanoparticles combining chemotherapy and immunotherapy for malignant melanoma: target formulation development and in vitro anticancer activity.</a> Int J Nanomedicine. 6, 1991-2005 (2011).</li><li>Jenning, V., Th&#252;nemann, A. F., Gohla, S. H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Characterisation+of+a+novel+solid+lipid+nanoparticle+carrier+system+based+on+binary+mixtures+of+liquid+and+solid+lipids.">Characterisation of a novel solid lipid nanoparticle carrier system based on binary mixtures of liquid and solid lipids.</a> Int J Pharm. 199 (2), 167-177 (2000).</li><li>M&#252;ller, R. H., Radtke, M., Wissing, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanostructured+lipid+matrices+for+improved+microencapsulation+of+drugs.">Nanostructured lipid matrices for improved microencapsulation of drugs.</a> Int J Pharm. 242 (1-2), 121-128 (2002).</li><li>Pouton, C. W. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Lipid+formulations+for+oral+administration+of+drugs:+Non-emulsifying,+self-emulsifying+and+'self-microemulsifying'+drug+delivery+systems.">Lipid formulations for oral administration of drugs: Non-emulsifying, self-emulsifying and 'self-microemulsifying' drug delivery systems.</a> Eur. J. Pharm. Sci. 11 (Suppl. 2), S93-S98 (2000).</li><li>Jores, K., Mehnert, W., Drechsler, M., Bunjes, H., Johann, C., M&#228;der, K. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Investigations+on+the+structure+of+solid+lipid+nanoparticles+(SLN)+and+oil-loaded+solid+lipid+nanoparticles+by+photon+correlation+spectroscopy,+field-flow+fractionation+and+transmission+electron+microscopy.">Investigations on the structure of solid lipid nanoparticles (SLN) and oil-loaded solid lipid nanoparticles by photon correlation spectroscopy, field-flow fractionation and transmission electron microscopy.</a> J Controlled Release. 95 (2), 217-227 (2004).</li><li>Almousallam, M., Zhu, H. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Encapsulation+of+cancer+therapeutic+agent+dacarbazine+using+nanostructured+lipid+carrier.">Encapsulation of cancer therapeutic agent dacarbazine using nanostructured lipid carrier.</a> Int nano lett. , (2015).</li><li>Ng, W. K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Thymoquinone-loaded+nanostructured+lipid+carrier+exhibited+cytotoxicity+towards+breast+cancer+cell+lines+(MDA-MB-231+and+MCF-7)+and+cervical+cancer+cell+lines+(HeLa+and+SiHa).">Thymoquinone-loaded nanostructured lipid carrier exhibited cytotoxicity towards breast cancer cell lines (MDA-MB-231 and MCF-7) and cervical cancer cell lines (HeLa and SiHa).</a> BioMed Research International. , (2015).</li><li>Sun, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Quercetin-nanostructured+lipid+carriers:+Characteristics+and+anti-breast+cancer+activities+in+vitro.">Quercetin-nanostructured lipid carriers: Characteristics and anti-breast cancer activities in vitro.</a> Colloids Surf., B. 113, 15-24 (2014).</li><li>Savla, R., Garbuzenko, O. B., Chen, S., Rodriguez-Rodriguez, L., Minko, T. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Tumor-Targeted+Responsive+Nanoparticle-Based+Systems+for+Magnetic+Resonance+Imaging+and+Therapy.">Tumor-Targeted Responsive Nanoparticle-Based Systems for Magnetic Resonance Imaging and Therapy.</a> Pharm Res. 31 (12), 3487-3502 (2014).</li><li>Chen, Y., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Formulation,+characterization,+and+evaluation+of+in+vitro+skin+permeation+and+in+vivo+pharmacodynamics+of+surface-charged+tripterine-loaded+nanostructured+lipid+carriers.">Formulation, characterization, and evaluation of in vitro skin permeation and in vivo pharmacodynamics of surface-charged tripterine-loaded nanostructured lipid carriers.</a> Int J Nanomedicine. 7, 3023 (2012).</li><li>Sanna, V., Caria, G., Mariani, A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Effect+of+lipid+nanoparticles+containing+fatty+alcohols+having+different+chain+length+on+the+ex+vivo+skin+permeability+of+Econazole+nitrate.">Effect of lipid nanoparticles containing fatty alcohols having different chain length on the ex vivo skin permeability of Econazole nitrate.</a> Powder Technol. 201 (1), 32-36 (2010).</li><li>Brigger, I., Dubernet, C., Couvreur, P. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanoparticles+in+cancer+therapy+and+diagnosis.">Nanoparticles in cancer therapy and diagnosis.</a> Adv Drug Deliv Rev. 54 (5), 631-651 (2002).</li><li>Visaria, R. K., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Enhancement+of+tumor+thermal+therapy+using+gold+nanoparticle-assisted+tumor+necrosis+factor-a+delivery.">Enhancement of tumor thermal therapy using gold nanoparticle-assisted tumor necrosis factor-a delivery.</a> Mol Cancer Ther. 5 (4), 1014-1020 (2006).</li><li>Tripathi, A., Gupta, R., Saraf, S. A. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=PLGA+nanoparticles+of+anti+tubercular+drug:+Drug+loading+and+release+studies+of+a+water+in-soluble+drug.">PLGA nanoparticles of anti tubercular drug: Drug loading and release studies of a water in-soluble drug.</a> Int J PharmTech Res. 2 (3), 2116-2123 (2010).</li><li>Joshi, M., Patravale, V. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Nanostructured+lipid+carrier+(NLC)+based+gel+of+celecoxib.">Nanostructured lipid carrier (NLC) based gel of celecoxib.</a> Int J Pharm. 346 (1-2), 124-132 (2008).</li><li>Lim, W. M., Rajinikanth, P. S., Mallikarjun, C., Kang, Y. B. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Formulation+and+delivery+of+itraconazole+to+the+brain+using+a+nanolipid+carrier+system.">Formulation and delivery of itraconazole to the brain using a nanolipid carrier system.</a> Int J Nanomedicine. 9 (1), 2117-2126 (2014).</li><li>Bei, D., Zhang, T., Murowchick, J. B., Youan, B. C. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Formulation+of+dacarbazine-loaded+cubosomes.+Part+III.+physicochemical+characterization.">Formulation of dacarbazine-loaded cubosomes. Part III. physicochemical characterization.</a> AAPS PharmSciTech. 11 (3), 1243-1249 (2010).</li><li>Lei, M., et al. <a target="_blank" href="http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=PubMed&cmd=Search&doptcmdl=Citation&defaultField=Title+Word&term=Dual+drug+encapsulation+in+a+novel+nano-vesicular+carrier+for+the+treatment+of+cutaneous+melanoma:+Characterization+and+in+vitro/in+vivo+evaluation.">Dual drug encapsulation in a novel nano-vesicular carrier for the treatment of cutaneous melanoma: Characterization and in vitro/in vivo evaluation.</a> RSC Advances. 5 (26), (2015).</li></ol>

Lipidbaserede nanostrukturerede partikler er blevet anvendt til at tilvejebringe et stærkt lipofilt bærer til afgivelse af hydrofobe lægemidler. En NLC er anden generation af fast lipid nanostrukturerede bærer, der er fast ved stue- og legemstemperatur. Inkorporeringen af ​​en fast lipid i en flydende lipid i et NAR resulterer i en mindre perfekt krystallisation, hvilket øger lægemiddelfyldning effektivitet og også reducere udsendelse af indkapslede lægemidler under opbevaring. F...

Dacarbazin (DAC) er et alkylerende middel, som udøver antitumoraktivitet gennem nukleinsyrer methylering eller direkte DNA-skader, hvilket fører til standsning af cellecyklus og celledød 1. Som et første linje kemoterapeutisk middel, er Dac blevet anvendt alene eller i kombination med andre kemoterapeutiske lægemidler til behandling af forskellige cancertyper 2-6. Det er den mest aktive middel hidtil bruges i behandling af kutant og metastatisk melanom, som er den mest aggressive form for hudkræft 3,7,8. Svarprocenten er imidlertid kun 20% i bedste, og de terapeutiske virkninger ledsages ofte med alvorlige systemiske bivirkninger. I sin naturlige form, Dac er hydrofil og er ustabil på grund af sin lysfølsomhed 9. Den eneste tilgængelige formel til klinisk anvendelse i øjeblikket er et sterilt pulver, der skal anvendes i suspension til intravenøs infusion 7,8. Den lave svarprocent og høj systemisk toksicitet rspiste af lægemidlet er i høj grad tilskrives dens ringe vandopløselighed, derfor lav tilgængelighed på target site, og høj fordeling på uden for målgruppen sites, der begrænser den maksimale dosis af lægemidlet 10. Den hurtige nedbrydning og metabolisme efter intravenøs optagelse sammen med udviklingen af lægemiddelresistens begrænse den kliniske anvendelse og terapeutiske virkning af lægemidlet 11. Derfor er der et presserende behov for at udvikle alternative Dac formuleringer til behandling af malignt melanom. Kolloide systemer, der indeholder liposomer, miceller eller nanostrukturerede partikler er blevet intensivt undersøgt for deres anvendelse i drug delivery som gennemgået af Marilene et al. 12 Nanostrukturerede partikler som potentielle lægemiddelkandidater luftfartsselskaber har været stigende opmærksomhed i de seneste ti år på grund af deres evne til at øge medikamentifyldning effektivitet, kontrol medikamentfrigivelse, forbedre narkotika farmakokinetik og biodistribution, og dermed reduce lægemiddel systemisk toksicitet 13. Kun et par nanoformulations, er imidlertid blevet undersøgt hidtil for Dac levering, der viser beskyttelse af lægemidlet fra foto degeneration, forøget lægemiddelopløselighed og forbedret terapeutisk virkning 10,14,15. Men disse formuleringer lidt fra lav indkapslende effektivitet, mens nogle også bruger syntetiske polymere nanopartikler, der ikke er omkostningseffektiv. Nanostrukturerede lipidbærere (NAR), fremstillet af en blanding af faste og flydende lipider, er blevet udviklet til lægemiddeladministration 16,17. Lægemidlerne, der skal indkapsles, er ofte opløselige i både flydende lipider og faste lipider faser 18, hvilket resulterer i en høj belastning og kontrolleret frigivelse 19. Denne undersøgelse har til formål at udvikle en ny Dac formulering baseret på NLC-indkapsling hjælp glycerylpalmitostearat og isopropylmyristat som lipider. Fremstillingen involveret olie-i-vand-emulsion, fordampning, størkning og homogenization. Præparaterne er blevet karakteriseret for NLC størrelse, form, ultrastruktur, og dispersitet, narkotika indkapslingseffektivitet og lægemiddelfyldning 20.

<table border="0" cellpadding="0" cellspacing="0" width="968">
	<tbody>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Dacarbazine (DAC)</td>
			<td style="width:467px;">Sigma Aldrich (Gillingham Dorset, UK)</td>
			<td style="width:119px;">D2390-100MG</td>
			<td style="width:167px;">drug used for uploading</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;">glyceryl palmitostearate&#160;</td>
			<td>Gattefoss&#233; (Saint_Priest_c&#233;dex, France)</td>
			<td style="width:119px;">85251-77-0</td>
			<td>solid lipid&#160;</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">d-&#945;- Tocopherol polyethylene glycol succinate (TPGS)</td>
			<td>Sigma Aldrich (Gillingham Dorset, UK)</td>
			<td style="width:119px;">57668</td>
			<td>lipid phase surfactant</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Poloxamer 188</td>
			<td>Sigma Aldrich (Gillingham Dorset, UK)</td>
			<td style="width:119px;">15759-1KG</td>
			<td>liqiud phase surfactant</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Acetone&#160;</td>
			<td>Sigma Aldrich (Gillingham Dorset, UK)</td>
			<td style="width:119px;">650501-1L</td>
			<td>organic solvent</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Ethanol&#160;</td>
			<td>Sigma Aldrich (Gillingham Dorset, UK)</td>
			<td style="width:119px;">459836-1L</td>
			<td>organic solvent</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Soybean lecithin (SL)</td>
			<td>Cuisine Innovation (Dijon, France)</td>
			<td style="width:119px;">SLL1402</td>
			<td>lipid phase surfactant</td>
		</tr>
		<tr height="42">
			<td height="42" style="height:42px;width:216px;">Double-distilled water was collected in our laboratory from</td>
			<td>Millipore-Q Gradient A10 ultra-pure water system (Millipore, France)</td>
			<td style="width:119px;">SAS - 67120&#160;</td>
			<td>aqueous phase&#160;</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">T 25 digital ULTRA-TURRAX</td>
			<td style="width:467px;">IKA</td>
			<td style="width:119px;">3725000</td>
			<td>as high shear disperser</td>
		</tr>
		<tr height="21">
			<td height="21" style="height:21px;width:216px;">Hotplate Magnetic Stirrer</td>
			<td>Scientific Support, Inc</td>
			<td style="width:119px;">1454&#160;</td>
			<td>emulsion homogenization</td>
		</tr>
	</tbody>
</table>

encapsulation of cancer therapeutic agent dacarbazine using nanostructured lipid carrier

Den eneste formel for dacarbazin (DAC) i klinisk anvendelse er intravenøs infusion, der udgør en dårlig terapeutisk profil grund af den lave dispersitet af lægemidlet i vandig opløsning. For at overvinde dette problem blev en nanostruktureret lipid-bærer (NLC) bestående af glycerylpalmitostearat og isopropylmyristat udviklet til indkapsling Dac. Nlcs med kontrolleret størrelse blev opnået ved anvendelse af dispersion høj forskydning (HSD) efter størkning af olie-i-vand-emulsion. Synteseparametrene, herunder overfladeaktivt koncentration, hastigheden og tidspunkt for HSD blev optimeret for at opnå den mindste CNT med størrelse, polydispergeringsindeks og zeta-potentialet af 155 ± 10 nm, 0,2 ± 0,01, og -43,4 ± 2 mV hhv. De optimale parametre blev også anvendt til Dac-loaded NLC præparat. Den resulterende CNT fyldt med Dac besad størrelse, polydispergeringsindeks og zeta-potentialet på 190 ± 10 nm, 0,2 ± 0,01, og -43,5 ± 1,2 mV hhv. Det stof indkapsling efficiency og medikamentbelastning nåede 98% og 14%, hhv. Dette er den første rapport om indkapsling af Dac hjælp NLC, hvilket indebærer, at NLC kunne være en ny potentiel kandidat som narkotika luftfartsselskab til at forbedre den terapeutiske profil Dac.

Forberedelserne af NLC og NLC-Dac hjælp glycerylpalmitostearat og isopropylmyristat med forskellige parametre blev karakteriseret for PS, PDI, morfologi og ultrastruktur 20. PS og PDI af NLCS var overfladeaktivt koncentration, HSD hastighed og varighed afhængig. Bedømt ved PS og PDI af NLCS blev de bedste resultater opnået med 1% af overfladeaktivt middel og en ren dispersion hastighed på 15.000 rpm i 30 minutter (figur 1A, B og C...

Watch this Scientific Journal Video about Encapsulation of Cancer Therapeutic Agent Dacarbazine Using Nanostructured Lipid Carrier at JoVE.com

Encapsulation of Cancer Therapeutic Agent Dacarbazine Using Nanostructured Lipid Carrier

Den mest almindeligt anvendte fremgangsmåde til nanostrukturerede lipid-bærer (NLC) syntese involverer olie-i-vand-emulsion, homogenisering og størkning. Dette blev ændret her ved at anvende spredning høj forskydning efter størkning at opnå en NLC med ønskelig størrelse, forbedret medicin indkapsling og narkotika lastning effektivitet som en potentiel bærer for dacarbazin levering.

Indkapsling af Cancer Therapeutic Agent Dacarbazin Brug af nanostrukturerede Lipid Carrier

The only formula of dacarbazine (Dac) in clinical use is intravenous infusion, presenting a poor therapeutic profile due to the low dispersity of the drug ...

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Chemistry

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