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Marwah M, Narain Srivastava P, Mishra S, Nagarsenker M. Functionally engineered 'hepato-liposomes': Combating liver-stage malaria in a single prophylactic dose. Int J Pharm 2020; 587:119710. [PMID: 32739383 DOI: 10.1016/j.ijpharm.2020.119710] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/25/2020] [Accepted: 07/27/2020] [Indexed: 01/09/2023]
Abstract
Primaquine continues to remain the gold standard molecule with an incumbent toxicity profile, as far as radical treatment of malaria is concerned. Better molecules are available at experimental level but their targeted delivery is a challenge. The present work identifies 'Decoquinate (DQN)' as a repurposed, safer drug molecule with a potential to function as an appealing replacement for primaquine active against liver-stage malaria. The work focuses on delivering the highly lipophilic DQN (log P ~ 5) in a liposomal carrier system to 'sporozoite infested hepatocytes' using two different in-house synthesized hepatotropic ligands. Functionally engineered 'hepato-liposomes' exhibit differences in their DQN loading capacities but no significant change in morphology or particle size and are also not affected by freeze drying. Two ligands, targeting different receptors on hepatocytes, have been compared for their in vitro and in vivo drug delivery efficiency in liver stage malaria. The studies reveal superior antimalarial efficacy of differently designed DQN loaded liposomes and demonstrate antimalarial efficacy at a low dose of 0.5 mg/kg for a repurposed molecule like DQN. The in vivo studies successfully discriminate the functional efficiency of the carriers and establish the importance of design in liposomal drug delivery for malarial prophylaxis.
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Affiliation(s)
- Megha Marwah
- Department of Pharmaceutics, Bombay College of Pharmacy, Kalina, Santacruz (East), Mumbai, India
| | - Pratik Narain Srivastava
- Division Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow, India
| | - Satish Mishra
- Division Molecular Parasitology and Immunology, CSIR-Central Drug Research Institute, Lucknow, India.
| | - Mangal Nagarsenker
- Department of Pharmaceutics, Bombay College of Pharmacy, Kalina, Santacruz (East), Mumbai, India.
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Application of quality by design principles in the development and evaluation of semisolid drug carrier systems for the transdermal delivery of lidocaine. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2017.12.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Caddeo C, Valenti D, Nácher A, Manconi M, Fadda AM. Exploring the co-loading of lidocaine chemical forms in surfactant/phospholipid vesicles for improved skin delivery. J Pharm Pharmacol 2015; 67:909-17. [PMID: 25648182 DOI: 10.1111/jphp.12385] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 12/21/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVES The present study was aimed at targeting the skin to deliver lidocaine loaded in surfactant/phospholipid vesicles tailored for improved local delivery. The influence of different formulation parameters was explored to maximise drug efficacy. METHODS The vesicles were prepared using a mixture of soy lipids (Phospholipon 50) and a surfactant with penetration-enhancing properties (Oramix CG110, Labrasol, Labrafac PG or Labrafac CC), and loaded with lidocaine. The formulations were analysed in detail by cryo-TEM, SAXS, Turbiscan Lab, and tested in permeation experiments through new born pig skin, as a function of the chemical form and concentration of lidocaine (i.e. free base or salt, 12.5 or 25 mg/ml). KEY FINDINGS Small, spherical vesicles with good entrapment efficiency and exceptional long-term stability were produced. The lamellar organisation was affected by either the surfactant or the lidocaine form used. Permeation studies highlighted that the co-incorporation of lidocaine base + hydrochloride allowed the achievement of a superior deposition in the skin layers, especially when surfactant vesicles were used, as their content was presumably saturated with the maximum amount of loadable anaesthetic. CONCLUSIONS The proposed systems based on surfactant/phospholipid vesicles co-loaded with both lidocaine forms are an effective approach for improving its local delivery.
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Affiliation(s)
- Carla Caddeo
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
| | - Donatella Valenti
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
| | - Amparo Nácher
- Department of Pharmacy and Pharmaceutical Technology, University of Valencia, Valencia, Spain.,Instituto de Reconocimiento Molecular y Desarrollo Tecnológico, Centro Mixto Universidad Politécnica de Valencia-Universidad de Valencia, Valencia, Spain
| | - Maria Manconi
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
| | - Anna Maria Fadda
- Department Scienze della Vita e dell'Ambiente, Sezione di Scienze del Farmaco, University of Cagliari, Cagliari, Italy
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Nahak P, Karmakar G, Roy B, Guha P, Sapkota M, Koirala S, Chang CH, Panda AK. Physicochemical studies on local anaesthetic loaded second generation nanolipid carriers. RSC Adv 2015. [DOI: 10.1039/c4ra16434b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Effect of drug concentration on different properties of NLC.
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Affiliation(s)
- Prasant Nahak
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Gourab Karmakar
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Biplab Roy
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Pritam Guha
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
| | - Manish Sapkota
- Department of Pharmaceutics
- Himalayan Pharmacy Institute
- India
| | - Suraj Koirala
- Department of Pharmaceutics
- Himalayan Pharmacy Institute
- India
| | - Chien-Hsiang Chang
- Department of Chemical Engineering
- National Cheng Kung University
- Tianan
- Taiwan
| | - Amiya Kumar Panda
- Department of Chemistry
- University of North Bengal
- Darjeeling-734013
- India
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Fetih G, Fathalla D, El-Badry M. Liposomal gels for site-specific, sustained delivery of celecoxib: in vitro and in vivo evaluation. Drug Dev Res 2014; 75:257-66. [PMID: 24939834 DOI: 10.1002/ddr.21179] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Accepted: 05/07/2014] [Indexed: 11/12/2022]
Abstract
The objective of this work was to evaluate liposome-containing gel formulations for the sustained, site-specific delivery of celecoxib (CXB). Liposomes composed of phosphadtidylcholine (and various amounts of cholesterol (Ch) were prepared using thin film hydration and characterized for encapsulation efficiency, vesicle size, and drug-excipient interaction using differential scanning calorimetry and Fourier-transform infrared spectroscopy. The selected liposome formulation was incorporated in different gel formulations: the Ch ratio affected the encapsulation efficiency of the drug, by increasing Ch ratio up until 1:1 the encapsulation efficiency increased. Further increasing the Ch ratio resulted in decreasing encapsulation efficiency. In vitro drug release and skin permeation studies showed sustained release and enhanced permeation compared with gel formulations containing free drug. In the rat paw edema test, the anti-inflammatory activity of the selected liposomal gel formulation was higher and more sustained compared with that of the nonliposomal gel formulation containing free drug. These results suggest that the liposome-containing gels are promising formulations for sustained, site-specific delivery of CXB.
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Affiliation(s)
- Gihan Fetih
- Department of Pharmaceutics, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt
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Dogrul A, Arslan SA, Tirnaksiz F. Water/oil type microemulsion systems containing lidocaine hydrochloride:in vitroandin vivoevaluation. J Microencapsul 2014; 31:448-60. [DOI: 10.3109/02652048.2013.879926] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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El-Ridy MS, Yehia SA, Kassem MAEM, Mostafa DM, Nasr EA, Asfour MH. Niosomal encapsulation of ethambutol hydrochloride for increasing its efficacy and safety. Drug Deliv 2013; 22:21-36. [PMID: 24359403 DOI: 10.3109/10717544.2013.868556] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
CONTEXT Tuberculosis (TB) is a worldwide health concern. In 2011, about 8.7 million new cases developed TB and 1.4 million people died from it. OBJECTIVE Enhancement of ethambutol hydrochloride activity and safety in treatment of TB through niosomal encapsulation. MATERIALS AND METHODS Niosomes were prepared by the thin-film hydration method. They were characterized, investigated for in vitro release, lung disposition and in vivo biological evaluation. RESULTS Entrapment efficiency of ethambutol hydrochloride ranged from 12.20% to 25.81%. Zeta potential values inferred stability of neutral and negatively charged formulations. In vitro release was biphasic. Lung targeting was increased by niosomal encapsulation. Biological evaluation revealed superiority of niosomal ethambutol hydrochloride over the free drug. DISCUSSION Neutral and negatively charged niosomal vesicles are dispersed homogenously unlike positively charged vesicles. Niosomal encapsulation results in controlled drug release. Niosomal formulations targeted more drugs to mice lungs for a prolonged period of time resulting in: decreased root-specific lung weight, bacterial counts in lung homogenates and optimizing pathological effect on guinea pigs lungs, livers and spleens. CONCLUSION Encapsulation of ethambutol hydrochloride in niosomal formulations for the treatment of TB provides higher efficacy and safety compared with the free drug.
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Affiliation(s)
- Mohammed Shafik El-Ridy
- Department of Pharmaceutical Technology, National Research Centre (NRC) , Dokki, Cairo , Egypt
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Sapsford KE, Algar WR, Berti L, Gemmill KB, Casey BJ, Oh E, Stewart MH, Medintz IL. Functionalizing nanoparticles with biological molecules: developing chemistries that facilitate nanotechnology. Chem Rev 2013; 113:1904-2074. [PMID: 23432378 DOI: 10.1021/cr300143v] [Citation(s) in RCA: 818] [Impact Index Per Article: 74.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Kim E Sapsford
- Division of Biology, Department of Chemistry and Materials Science, Office of Science and Engineering Laboratories, U.S. Food and Drug Administration, Silver Spring, Maryland 20993, United States
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El-Nabarawi MA, Bendas ER, El Rehem RTA, Abary MYS. Transdermal drug delivery of paroxetine through lipid-vesicular formulation to augment its bioavailability. Int J Pharm 2013; 443:307-17. [PMID: 23337629 DOI: 10.1016/j.ijpharm.2013.01.016] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Revised: 12/24/2012] [Accepted: 01/07/2013] [Indexed: 11/25/2022]
Abstract
Paroxetine (PAX) is the most potent serotonin reuptake blocker antidepressant clinically available. This study is aimed to reduce the side effects accompanied with the initial high plasma concentration after oral administration of PAX and fluctuations in plasma levels and also to decrease the broad metabolism of the drug in the liver by developing and optimizing liposomal transdermal formulation of PAX in order to improve its bioavailability. PAX liposomes were prepared by reverse phase evaporation technique using lecithin phosphatidylcholine (LPC), cholesterol (CHOL) and drug in different molar ratios. The prepared liposomes were characterized for size, shape, entrapment efficiency and in vitro drug release. The studies demonstrated successful preparation of PAX liposomes. The effect of using different molar ratios of (LPC:CHOL) on entrapment efficiency and on drug release was studied. Liposomes showed percentage entrapment efficiency (%EE) of 81.22 ± 3.08% for optimized formula (F5) which composed of (LPC:CHOL, 7:7) and 20mg of PAX, with average vesicle size of 220.53 ± 0.757 nm. The selected formula F5 (7:7) was incorporated in gel bases of HPMC-E4M (2%, 4%, and 6%). The selected formula of PAX liposomal gel of HPMC-E4M (2% and 4%) were fabricated in the reservoir type of transdermal patches and evaluated through in vitro release. After that the selected formula of PAX liposomal gel transdermal patch was applied to rabbits for in vivo bioavailability study in comparison with oral administration of the marketed PAX tablet. An HPLC method was developed for the determination of PAX in plasma of rabbits after transdermal patch application and oral administration of the marketed PAX tablets of 20mg dose. The intra- and inter-day accuracy and precision were determined as relative error and relative standard deviation, respectively. The linearity was assessed in the range of 5-200 ng/ml. Pharmacokinetic parameters were determined as the C(max) of PAX liposomal transdermal patch was found to be 92.53 ng/ml at t(max) of 12h and AUC(0-48) was 2305.656 ngh/ml and AUC(0-∞) was 3852.726 ngh/ml, compared to the C(max) of 172.35 ng/ml after oral administration of the marketed PAX tablet with t(max) of 6h and AUC(0-24) was 1206.63 ngh/ml and AUC(0-∞) was 1322.878 ngh/ml. These results indicate improvement of bioavailability of the PAX after liposomal transdermal patch application and sustaining of the therapeutic effects compared to oral administration.
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Affiliation(s)
- Mohamed A El-Nabarawi
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Egypt
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Shafaa MW, Sabra NM, Fouad RA. The extended ocular hypotensive effect of positive liposomal cholesterol bound timolol maleate in glaucomatous rabbits. Biopharm Drug Dispos 2011; 32:507-17. [DOI: 10.1002/bdd.778] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2011] [Revised: 08/14/2011] [Accepted: 10/15/2011] [Indexed: 11/10/2022]
Affiliation(s)
| | - Neveen M. Sabra
- Physiological Optics Department; Research Institute of Ophthalmology; Giza; Egypt
| | - Rehab A. Fouad
- Physics Department, Faculty of Science; Helwan University; Cairo; Egypt
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Akhter S, Kushwaha S, Warsi MH, Anwar M, Ahmad MZ, Ahmad I, Talegaonkar S, Khan ZI, Khar RK, Ahmad FJ. Development and evaluation of nanosized niosomal dispersion for oral delivery of Ganciclovir. Drug Dev Ind Pharm 2011; 38:84-92. [DOI: 10.3109/03639045.2011.592529] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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12
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Pathak P, Nagarsenker M. Formulation and evaluation of lidocaine lipid nanosystems for dermal delivery. AAPS PharmSciTech 2009; 10:985-92. [PMID: 19641997 DOI: 10.1208/s12249-009-9287-1] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 07/02/2009] [Indexed: 11/30/2022] Open
Abstract
The objective of the present investigation was to formulate solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) for improving the dermal delivery of a local anesthetic agent lidocaine (LID). SLN and NLC were characterized for particle size distribution, polydispersity index, entrapment efficiency, X-ray powder diffraction pattern (XRD), thermal behavior by differential scanning colorimeter (DSC) and surface morphology by transmission electron microscopy (TEM). LID-loaded SLN and NLC were formulated into hydrogels for topical application. The in vitro permeation profiles of LID SLN gel, LID NLC gel, and a marketed LID formulation (Xylocaine gel) were evaluated by using guinea pig skin. The in vivo efficacy of LID SLN gel, LID NLC gel, and a marketed LID formulation (Xylocaine gel) gel was evaluated on guinea pig using pinprick test. LID SLN showed a particle size of 78.1 nm with a polydispersity index of 0.556, whereas LID NLC showed a particle size of 72.8 nm with a polydispersity index of 0.463. The entrapment efficiency of LID in both SLN and NLC was 97% and 95.9%, respectively. The TEM studies revealed the almost spherical nature of LID SLN and NLC formulations. The XRD and DSC studies of LID SLN suggested amorphization of drug in the carrier system. The SLN formulation was stable with respect to particle size, polydispersity, and entrapment efficiency for 6 months at 40 degrees C/75% relative humidity (RH). Negligible leakage was observed for the NLC formulation when stored for 1 month at 40 degrees C/75% RH. In vitro permeation studies indicated that LID SLN gel and LID NLC gel significantly sustained the LID release compared to that of Xylocaine gel. The in vivo efficacy results supported the results of the in vitro permeation studies wherein the LID SLN gel and LID NLC gel resulted in fivefold and sixfold increase in duration of anesthesia, respectively, compared to that of Xylocaine gel.
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Nasr M, Mansour S, Mortada ND, Elshamy AA. Vesicular aceclofenac systems: A comparative study between liposomes and niosomes. J Microencapsul 2008; 25:499-512. [DOI: 10.1080/02652040802055411] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hathout RM, Mansour S, Mortada ND, Guinedi AS. Liposomes as an ocular delivery system for acetazolamide: in vitro and in vivo studies. AAPS PharmSciTech 2007; 8:1. [PMID: 17408209 PMCID: PMC2750666 DOI: 10.1208/pt0801001] [Citation(s) in RCA: 182] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2006] [Accepted: 07/12/2006] [Indexed: 12/16/2022] Open
Abstract
The purpose of this study was to formulate topically effective controlled release ophthalmic acetazolamide liposomal formulations. Reverse-phase evaporation and lipid film hydration methods were used for the preparation of reverse-phase evaporation (REVs) and multilamellar (MLVs) acetazolamide liposomes consisting of egg phosphatidylcholine (PC) and cholesterol (CH) in the molar ratios of (7:2), (7:4), (7:6), and (7:7) with or without stearylamine (SA) or dicetyl phosphate (DP) as positive and negative charge inducers, respectively. The prepared liposomes were evaluated for their entrapment efficiency and in vitro release. Multilamellar liposomes entrapped greater amounts of drug than REVs liposomes. Drug loading was increased by increasing CH content as well as by inclusion of SA. Drug release rate showed an order of negatively charged > neutral > positively charged liposomes, which is the reverse of the data of drug loading efficiency. Physical stability study indicated that approximately 89%, 77%, and 69% of acetazolamide was retained in positive, negative, and neutral MLVs liposomal formulations up to a period of 3 months at 4 degrees C. The intraocular pressure (IOP)-lowering activity of selected acetazolamide liposomal formulations was determined and compared with that of plain liposomes and acetazolamide solution. Multilamellar acetazolamide liposomes revealed more prolonged effect than REVs liposomes. The positively charged and neutral liposomes exhibited greater lowering in IOP and a more prolonged effect than the negatively charged ones. The positive multilamellar liposomes composed of PC:CH:SA (7:4:1) molar ratio showed the maximal response, which reached a value of -7.8 +/- 1.04 mmHg after 3 hours of topical administration.
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Affiliation(s)
- Rania M Hathout
- Department of Pharmaceutics, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
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Abstract
To justify the inclusion of phenazone, independently of its anti-inflammatory properties, in combination with a local anaesthetic, such as lidocaine, in some ear drop medications, we have studied the effect of this compound on the local anaesthetic activity of lidocaine in an animal model, that of sciatic nerve blockade in mice. Lidocaine and phenazone were tested alone and in combination at various concentrations. The local anaesthetic activity was estimated as the loss of motor activity of the hindlimb after topical injection of the drugs in the region of the sciatic nerve. Lidocaine, at concentrations ranging from 0.03 to 0.25%, induced a concentration-dependent anaesthetic effect. Phenazone alone had no effect at 0.25-1%. When combined, the two compounds acted synergistically. The local anaesthesia induced by lidocaine plus phenazone was significantly more intense and longer lasting than that induced by lidocaine alone. Phenazone enhanced the potency of lidocaine in this animal model. It is suggested that the potentiated local anaesthetic effect of the combination may be partly due to enhanced local bioavailability of lidocaine.
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Affiliation(s)
- M Verleye
- Laboratoires Biocodex, Zac de Mercières, Compiègne, 60200, France
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Literature Alerts. J Microencapsul 1998. [DOI: 10.3109/02652049809008251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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