Adv Pharm Bull. 2018;8(4): 617-625.
doi: 10.15171/apb.2018.070
PMID: 30607334
PMCID: PMC6311639
Scopus ID: 85057711916
  Abstract View: 2906
  PDF Download: 837

Research Article

Bio Pharmaceutics Classification System (BCS) Class IV Drug Nanoparticles: Quantum Leap to Improve Their Therapeutic Index

Sachin Kumar 1, Ramneek Kaur 1, Rashi Rajput 1, Manisha Singh 1* ORCID logo

1 Department of Biotechnology, Jaypee Institute of Information Technology Noida 201307, India.


Purpose: Biopharmaceutics classification system (BCS) class IV compounds, exhibits least oral bioavailability, low solubility and intestinal permeability among all pharmaceutical classes of drugs. Thus, these drugs need more compatible and efficient delivery system. Since, their solubility in various medium, remains a limitation so, polymeric nano coacervates based drug loading with modified approach for them may prove to be a solution ahead. Therefore, in present study Chitosan is opted for encapsulating the BCS class IV drug (Hydrochlorothiazide) to attain better stability, enhanced permeability and lower toxicity. Methods: For this study, Hydrochlorothiazide (HCTZ) was opted for formulating chitosan based nano-coacervate system. Results: Optimized HCTZ nanocoacervates exhibited the average particle size of 91.39 ± 0.75 nm with Poly-dispersity index score of 0.159 ± 0.01, indicating homogeneity of colloidal solution. Zeta potential and encapsulation efficiency of HCTZ nanocoacervates were recorded as -18.9 ± 0.8 mV and 76.69 ± 0.82 % respectively. Further, from TEM and SEM evaluation the average particle size for the same were found in conformity (35-50 nm), with almost spherical morphology. Also, the EDX (Electron Dispersive X-ray) spectrometry and FT – IR analysis of optimized formulation indicated the balanced chemical composition and interaction between the polymeric molecules. The HCTZ nano coacervates showed the linear diffusion profile through the dialysis membrane. Conclusion: We can conclude from the present study that the optimized HCTZ nano coacervates may prove to be a suitable potential option for effective delivery of BCS class IV drugs.
Keywords: Hydrochlorothiazide, Bioavailability, Particle size analysis, Encapsulation efficiency, Permeability kinetics
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Submitted: 20 Mar 2018
Revision: 24 Sep 2018
Accepted: 27 Sep 2018
ePublished: 29 Nov 2018
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