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Phytomedicines (medicines derived from plants) for sickle cell disease

key information

source: Cochrane Database of Systematic Reviews

year: 2015

authors: Oniyangi O, Cohall DH

summary/abstract:

BACKGROUND:
Sickle cell disease, a common recessively inherited haemoglobin disorder, affects people from sub-Saharan Africa, the Middle East, Mediterranean basin, Indian subcontinent, Caribbean and South America. It is associated with complications and a reduced life expectancy. Phytomedicines (medicine derived from plants in their original state) encompass many of the plant remedies from traditional healers which the populations most affected would encounter. There has been little systematic appraisal of their benefits. This is an update of a Cochrane Review first published in 2010 and updated in 2013.
OBJECTIVES:
To assess the benefits and risks of phytomedicines in people with sickle cell disease of all types, of any age, in any setting.
SEARCH METHODS:
We searched the Cochrane Cystic Fibrosis and Genetic Disorders Group Haemoglobinopathies Trials Register, the International Standard Randomised Controlled Trial Number Register (ISRCTN) and the Allied and Complimentary Medicine Database (AMED).Dates of most recent searches: Haemoglobinopathies Trials Register: 13 October 2014;
ISRCTN:
17 January 2015; AMED: 20 January 2015.
SELECTION CRITERIA:
Randomised or quasi-randomised trials with participants of all ages with sickle cell disease, in all settings, comparing the administration of phytomedicines, by any mode to placebo or conventional treatment, including blood transfusion and hydroxyurea.
DATA COLLECTION AND ANALYSIS:
Both authors independently assessed trial quality and extracted data.
MAIN RESULTS:
Two trials (182 participants) and two phytomedicines Niprisan(®) (also known as Nicosan(®)) and Ciklavit(®) were included. The Phase IIB (pivotal) trial suggests that Niprisan(®) was effective in reducing episodes of severe painful sickle cell disease crisis over a six-month period. It did not affect the risk of severe complications or the level of anaemia. No serious adverse effects were reported. The single trial of Cajanus cajan (Ciklavit(®)) reported a possible benefit to individuals with painful crises, and a possible adverse effect (non-significant) on the level of anaemia.
AUTHORS’ CONCLUSIONS:
While Niprisan(®) appeared to be safe and effective in reducing severe painful crises over a six-month follow-up period, further trials are required to assess its role in the management of people with sickle cell disease and the results of its multicentre trials are awaited. Currently no conclusions can be made regarding the efficacy of Ciklavit(®). Based on the published results for Niprisan(®) and in view of the limitations in data collection and analysis of both trials, phytomedicines may have a potential beneficial effect in reducing painful crises in sickle cell disease. This needs to be further validated in future trials. More trials are required on the safety and efficacy of phytomedicines used in managing sickle cell disease.

organization: National Hospital, Abuja, Nigeria

DOI: 10.1002/14651858.CD004448.pub5

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