Abstract
Brucellosis is a common zoonotic infection, particularly in the developing world. The recommended treatment regimens for brucellosis involve the use of two medications such as doxycycline and curcumin in order to avoid relapses and prolonged use of these drugs. Doxycycline has excellent activity in the acidic phagolysosomal environment, while curcumin modulates the immune system function and macrophage activity. Due to the intracellular existence of Brucellae and the different anti-immune mechanisms of Brucella, the treatment of Brucella infection faces many limitations. The design of nanosystems is a promising treatment approach for brucellosis. The objective of this study was to design and evaluate the efficacy of in situ pH-responsive curcumin-loaded niosome hydrogel and doxycycline-loaded chitosan–sodium alginate nanoparticles as chemotherapeutic agents against brucellosis. The prepared formulae showed a spherical nano shape with a slow drug release pattern and small particle size. The prepared formulae were evaluated in vivo using Guinea pigs experimentally infected with Brucella melitensis biovar3. The prepared formula combination gave a significant high reduction rate of Brucella spleen viable count compared with that of untreated controls at p < 0.05. The results showed that the treatment schemes were not fully successful in eliminating Brucella infection in Guinea pigs; however, they significantly (p < 0.05) reduced the viable Brucella count in a shorter time and sub-therapeutic doses. Collectively the novel prepared formulae could be a successful therapy for the effective treatment of brucellosis infection at the recommended therapeutic doses.
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17 December 2020
A Correction to this paper has been published: https://doi.org/10.1208/s12249-020-01899-3
Abbreviations
- DOX:
-
Doxycycline
- LD50 :
-
Median lethal dose
- GMO:
-
Glyceryl monooleate
- b.wt:
-
Body weight
- h:
-
Hour
- IPB:
-
Isotonic phosphate buffer
- EE:
-
Entrapment efficiency
- PDI:
-
Polydispersity index
- TEM:
-
Transmission electron microscopy
- BPAT:
-
Buffered plate antigen test
- RBT:
-
Rose Bengal test
- BAPA:
-
Buffered acidified plate antigen
- CFU:
-
Colony-forming unit
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Abo El-Ela, F.I., Hussein, K.H., El-Banna, H.A. et al. Treatment of Brucellosis in Guinea Pigs via a Combination of Engineered Novel pH-Responsive Curcumin Niosome Hydrogel and Doxycycline-Loaded Chitosan–Sodium Alginate Nanoparticles: an In Vitro and In Vivo Study. AAPS PharmSciTech 21, 326 (2020). https://doi.org/10.1208/s12249-020-01833-7
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DOI: https://doi.org/10.1208/s12249-020-01833-7