Combination therapy of rabies-infected mice with inhibitors of pro-inflammatory host response, antiviral compounds and human rabies immunoglobulin

Copyright © 2018 Elsevier Ltd. All rights reserved..

Recent studies demonstrated that inhibitors of pro-inflammatory molecular cascades triggered by rabies infection in the central nervous system (CNS) can enhance survival in mouse model and that certain antiviral compounds interfere with rabies virus replication in vitro. In this study different combinations of therapeutics were tested to evaluate their effect on survival in rabies-infected mice, as well as on viral load in the CNS. C57Bl/6 mice were infected with Silver-haired bat rabies virus (SHBRV)-18 at virus dose approaching LD50 and LD100. In one experimental group daily treatments were initiated 4 h before-, in other groups 48 or 96 h after challenge. In the first experiment therapeutic combination contained inhibitors of tumour necrosis factor-α (infliximab), caspase-1 (Ac-YVAD-cmk), and a multikinase inhibitor (sorafenib). In the treated groups there was a notable but not significant increase of survival compared to the virus infected, non-treated mice. The addition of human rabies immunoglobulins (HRIG) to the combination in the second experiment almost completely prevented mortality in the pre-exposure treatment group along with a significant reduction of viral titres in the CNS. Post-exposure treatments also greatly improved survival rates. As part of the combination with immunomodulatory compounds, HRIG had a higher impact on survival than alone. In the third experiment the combination was further supplemented with type-I interferons, ribavirin and favipiravir (T-705). As a blood-brain barrier opener, mannitol was also administered. This treatment was unable to prevent lethal consequences of SHBRV-18 infection; furthermore, it caused toxicity in treated mice, presumably due to interaction among the components. In all experiments, viral loads in the CNS were similar in mice that succumbed to rabies regardless of treatment. According to the findings, inhibitors of detrimental host response to rabies combined with antibodies can be considered among the possible therapeutic and post-exposure options in human rabies cases.

Medienart:

E-Artikel

Erscheinungsjahr:

2019

Erschienen:

2019

Enthalten in:

Zur Gesamtaufnahme - volume:37

Enthalten in:

Vaccine - 37(2019), 33 vom: 02. Aug., Seite 4724-4735

Sprache:

Englisch

Beteiligte Personen:

Marosi, András [VerfasserIn]
Dufkova, Lucie [VerfasserIn]
Forró, Barbara [VerfasserIn]
Felde, Orsolya [VerfasserIn]
Erdélyi, Károly [VerfasserIn]
Širmarová, Jana [VerfasserIn]
Palus, Martin [VerfasserIn]
Hönig, Václav [VerfasserIn]
Salát, Jiří [VerfasserIn]
Tikos, Réka [VerfasserIn]
Gyuranecz, Miklós [VerfasserIn]
Růžek, Daniel [VerfasserIn]
Martina, Byron [VerfasserIn]
Koraka, Penelope [VerfasserIn]
Osterhaus, Albert D M E [VerfasserIn]
Bakonyi, Tamás [VerfasserIn]

Links:

Volltext

Themen:

Antibodies, Viral
Antiviral Agents
Combination
HRIG
Immunoglobulins
Infliximab
Journal Article
Rabies virus
Research Support, Non-U.S. Gov't
Sorafenib
Survival

Anmerkungen:

Date Completed 27.07.2020

Date Revised 27.07.2020

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1016/j.vaccine.2018.05.066

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM284506370