Intravenous Whole Blood Transfusion Results in Faster Recovery of Vascular Integrity and Increased Survival in Experimental Cerebral Malaria

Overview

Journal Mem Inst Oswaldo Cruz

Specialties Parasitology
Tropical Medicine

Date 2023 Jan 26

PMID 36700582

Authors

Saba Gul

Hans C Ackerman

Claudio Tadeu Daniel-Ribeiro

Leonardo Jm Carvalho

Affiliations

Soon will be listed here.

Abstract

Background: Cerebral malaria is a lethal complication of Plasmodium falciparum infections in need of better therapies. Previous work in murine experimental cerebral malaria (ECM) indicated that the combination of artemether plus intraperitoneal whole blood improved vascular integrity and increased survival compared to artemether alone. However, the effects of blood or plasma transfusion administered via the intravenous route have not previously been evaluated in ECM.

Objectives: To evaluate the effects of intravenous whole blood compared to intravenous plasma on hematological parameters, vascular integrity, and survival in artemether-treated ECM.

Methods: Mice with late-stage ECM received artemether alone or in combination with whole blood or plasma administered via the jugular vein. The outcome measures were hematocrit and platelets; plasma angiopoietin 1, angiopoietin 2, and haptoglobin; blood-brain barrier permeability; and survival.

Findings: Survival increased from 54% with artemether alone to 90% with the combination of artemether and intravenous whole blood. Intravenous plasma lowered survival to 18%. Intravenous transfusion provided fast and pronounced recoveries of hematocrit, platelets, angiopoietins levels and blood brain barrier integrity.

Main Conclusions: The outcome of artemether-treated ECM was improved by intravenous whole blood but worsened by intravenous plasma. Compared to prior studies of transfusion via the intraperitoneal route, intravenous administration was more efficacious.

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