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2017 ; 12
(11
): e0187726
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English Wikipedia
Dietary amino acid and vitamin complex protects honey bee from immunosuppression
caused by Nosema ceranae
#MMPMID29117233
Glavinic U
; Stankovic B
; Draskovic V
; Stevanovic J
; Petrovic T
; Lakic N
; Stanimirovic Z
PLoS One
2017[]; 12
(11
): e0187726
PMID29117233
show ga
Microsporidium Nosema ceranae is well known for exerting a negative impact on
honey bee health, including down-regulation of immunoregulatory genes. Protein
nutrition has been proven to have beneficial effects on bee immunity and other
aspects of bee health. Bearing this in mind, the aim of our study was to evaluate
the potential of a dietary amino acid and vitamin complex "BEEWELL AminoPlus" to
protect honey bees from immunosuppression induced by N. ceranae. In a laboratory
experiment bees were infected with N. ceranae and treated with supplement on
first, third, sixth and ninth day after emergence. The expression of genes for
immune-related peptides (abaecin, apidaecin, hymenoptaecin, defensin and
vitellogenin) was compared between groups. The results revealed significantly
lower (p<0.01 or p<0.001) numbers of Nosema spores in supplemented groups than in
the control especially on day 12 post infection. With the exception of abacein,
the expression levels of immune-related peptides were significantly suppressed
(p<0.01 or p<0.001) in control group on the 12th day post infection, compared to
bees that received the supplement. It was supposed that N. ceranae had a negative
impact on bee immunity and that the tested amino acid and vitamin complex
modified the expression of immune-related genes in honey bees compromised by
infection, suggesting immune-stimulation that reflects in the increase in
resistance to diseases and reduced bee mortality. The supplement exerted best
efficacy when applied simultaneously with Nosema infection, which can help us to
assume the most suitable period for its application in the hive.
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