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Ovalbumin/lipopolysaccharide induced vasculitis in rats: a new predictive model

  • Vandana R. Thakur and Anita A. Mehta EMAIL logo
Published/Copyright: April 23, 2021

Abstract

Objectives

Currently, there are several animal models for vasculitis. Ovalbumin and lipopolysaccharide (OVA, LPS) are well established for causing inflammation and used as an adjunct in the vasculitis induction. However, to date, none has established the effect of OVA and LPS in disease induction. Therefore, in the present study, an attempt has been made to develop a new animal model for vasculitis using OVA/LPS in rats.

Methods

A total of 42 Wistar rats were divided randomly into seven groups (n=6/group), normal control, and three different doses (0.5, 1, and 5 mg/kg) of OVA and LPS treated groups. Half of the rats in each group received only intraperitoneal sensitization, while the remaining half rats were additionally subjected to a one-week intranasal challenge.

Results

Results showed that both OVA/LPS in their respective groups have significantly increased circulating inflammatory cells, C-reactive protein (CRP), Inflammatory cytokines (IL-1β, IL-6, TNF-α), Kidney damage markers (BUN, Creatinine), and liver function enzymes (AST, ALT) in a dose-dependent manner.

Conclusions

OVA/LPS induced vascular inflammation in a dose-dependent manner. However, the higher (5 mg/kg) dose of ovalbumin and lipopolysaccharide has contributed to severe vascular inflammation through increasing inflammatory cytokines. These findings suggest that OVA/LPS may contribute as a possible model for vasculitis in rats.


Corresponding author: Prof. Dr. Anita A. Mehta, Head, Department of Pharmacology, L. M. College of Pharmacy, Gujarat Technological University, Navrangpura, Ahmedabad 380009, Gujarat, India, Phone: +919428418611, E-mail:

Funding source: Student Startup Innovation Policy (SSIP) scheme, Government of Gujarat, India

Award Identifier / Grant number: Grant Number 215/2019

Acknowledgments

None.

  1. Research funding: This work was supported by grant from Student Startup Innovation Policy (SSIP) scheme (Grant Number 215/2019), Government of Gujarat, India.

  2. Author contributions: All authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  3. Competing interests: Authors state no conflict of interest.

  4. Informed consent: NA.

  5. Ethical approval: Experimental protocols for this study was reviewed and approved by the Institutional Animal Ethical Committee (IAEC), (LMCP/P’Cology/18/03) and adhered to the guidelines of the Committee for the Purpose of Control and Supervision of Experiments on Animals (CPCSEA), Ministry of Environment and Forest, Government of India.

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Received: 2020-06-26
Revised: 2021-01-10
Accepted: 2021-02-05
Published Online: 2021-04-23

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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