» Articles » PMID: 11474781

Host Factors Influencing the Preferential Localization of Sterically Stabilized Liposomes in Klebsiella Pneumoniae-infected Rat Lung Tissue

Overview
Journal Pharm Res
Specialties Pharmacology
Pharmacy
Date 2001 Jul 28
PMID 11474781
Citations 14
Authors
Affiliations
Soon will be listed here.
Abstract

Purpose: To gain insight into the host factors influencing liposome localization at sites of bacterial infection.

Methods: In a unilateral Klebsiella pneumoniae pneumonia rat model, capillary permeability and number of circulating leukocytes was quantified and related to the degree of liposome target localization.

Results: Liposome localization was highest in the hemorrhagic zone of infection, a zone characterized by markedly increased capillary permeability and high bacterial numbers. Both liposome localization and capillary permeability correlated positively with severity of infection. Lung instillation of other inflammatory stimuli, such as lipopolysaccharide or 0.1 M HCl inducing increased capillary permeability, also promoted liposome localization. As liposomal target localization in leukopenic rats was similar to that in immunocompetent rats, contribution of circulating leukocytes seems limited. Intrapulmonary distribution of liposomes shows that leukocytes at the target site are involved in liposome uptake after extravasation.

Conclusions: Increased capillary permeability plays a crucial role in liposome localization at the infected site, whereas contribution of leukocytes is limited. These results suggest inflammatory conditions that could benefit from liposomal drug delivery. The involvement of leukocytes in liposome uptake at the target site could be important information in the selection of appropriate drugs.

Citing Articles

Animal models of mucosal infections.

Assoni L, Couto A, Vieira B, Milani B, Lima A, Converso T Front Microbiol. 2024; 15:1367422.

PMID: 38559342 PMC: 10978692. DOI: 10.3389/fmicb.2024.1367422.


Development of Novel Lipid-Based Formulations for Water-Soluble Vitamin C versus Fat-Soluble Vitamin D3.

Chen J, Dehabadi L, Ma Y, Wilson L Bioengineering (Basel). 2022; 9(12).

PMID: 36551025 PMC: 9774173. DOI: 10.3390/bioengineering9120819.


Nanomedicines for the Efficient Treatment of Intracellular Bacteria: The "ART" Principle.

Qi H, Shan P, Wang Y, Li P, Wang K, Yang L Front Chem. 2021; 9:775682.

PMID: 34746099 PMC: 8563570. DOI: 10.3389/fchem.2021.775682.


The liposome of trehalose dimycolate extracted from M. bovis BCG induces antitumor immunity via the activation of dendritic cells and CD8 T cells.

Shiga M, Miyazaki J, Tanuma K, Nagumo Y, Yoshino T, Kandori S Cancer Immunol Immunother. 2021; 70(9):2529-2543.

PMID: 33570675 PMC: 10992466. DOI: 10.1007/s00262-021-02870-2.


Peptide-functionalized liposomes as therapeutic and diagnostic tools for cancer treatment.

Sonju J, Dahal A, Singh S, Jois S J Control Release. 2020; 329:624-644.

PMID: 33010333 PMC: 8082750. DOI: 10.1016/j.jconrel.2020.09.055.


References
1.
Klimuk S, Semple S, SCHERRER P, Hope M . Contact hypersensitivity: a simple model for the characterization of disease-site targeting by liposomes. Biochim Biophys Acta. 1999; 1417(2):191-201. DOI: 10.1016/s0005-2736(98)00261-2. View

2.
Allen T . Liposomes. Opportunities in drug delivery. Drugs. 1997; 54 Suppl 4:8-14. DOI: 10.2165/00003495-199700544-00004. View

3.
Thurston G, Murphy T, Baluk P, Lindsey J, McDonald D . Angiogenesis in mice with chronic airway inflammation: strain-dependent differences. Am J Pathol. 1998; 153(4):1099-112. PMC: 1853051. DOI: 10.1016/S0002-9440(10)65654-4. View

4.
Dams E, Oyen W, Boerman O, Storm G, Laverman P, Koenders E . Technetium-99m-labeled liposomes to image experimental colitis in rabbits: comparison with technetium-99m-HMPAO-granulocytes and technetium-99m-HYNIC-IgG. J Nucl Med. 1998; 39(12):2172-8. View

5.
Oyen W, Boerman O, van der Laken C, Claessens R, van der Meer J, Corstens F . The uptake mechanisms of inflammation- and infection-localizing agents. Eur J Nucl Med. 1996; 23(4):459-65. DOI: 10.1007/BF01247377. View