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Title: Appearance of konzo in South-Kivu, a wartorn area in the Democratic Republic of Congo
Authors: Chabwine, J N ×
Masheka, C
Balol'ebwami, Z
Maheshe, B
Balegamire, S
Rutega, B
Wa Lola, M
Mutendela, K
Bonnet, M-J
Shangalume, O
Balegamire, J M
Nemery, Benoit #
Issue Date: Mar-2011
Publisher: Pergamon
Series Title: Food and Chemical Toxicology vol:49 issue:3 pages:644-649
Abstract: Konzo is an upper motor neuron disease characterized by sudden-onset and irreversible spastic paraparesis occurring in nutritionally compromised people. It is associated with consumption of insufficiently processed cyanogenic-toxic cassava. Cassava, the main caloric source in the Democratic Republic of Congo, has been safely consumed for decades in the Eastern Province of South-Kivu. However, in the context of long-lasting war and violent conflicts, cases of spastic paraparesis resembling konzo appeared in a populous area (Burhinyi). Two field surveys (2003 and 2005) identified 41 subjects meeting clinical criteria of konzo and suffering from (chronic) malnutrition. Their urinary thiocyanate concentrations (median 129, range 20-688, SD 146μg/L), and cyanogen levels (median 20ppm, range 5-300ppm, SD 73ppm) in cassava roots from their household stocks were high. The source of cyanogenic-toxicity was unprocessed fresh cassava roots during harvest period, but probably also insufficiently processed roots. This first report of konzo in South-Kivu concludes that occurrence of konzo was triggered by food shortages because of the longstanding state of insecurity. Contributory factors included the introduction of new varieties of (bitter) cassava, but konzo may actually be caused by a combination of factors that are yet to be understood.
URI: 
ISSN: 0278-6915
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Environment and Health - miscellaneous
Occupational, Environmental and Insurance Medicine (-)
× corresponding author
# (joint) last author

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