International Journal of Molecular and Cellular Medicine (IJMCM)
Cellular and Molecular Biology Research Center, Babol University of Medical Sciences
شنبه 17 خرداد 1404
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دوره 6، شماره 4 - ( 8-1396 )
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10.22088/BUMS.6.4.222
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Nedaei F, Noormohammadi Z, Naddaf S R, Mohammadi S, Esmaeili Rastaghi A R. Analysis of Plasmodium vivax Apical Membrane Antigen-1 (PvAMA-1) Haplotypes among Iranian Isolates. Int J Mol Cell Med 2017; 6 (4) :222-234
URL:
http://ijmcmed.org/article-1-735-fa.html
Analysis of Plasmodium vivax Apical Membrane Antigen-1 (PvAMA-1) Haplotypes among Iranian Isolates. مجله بین المللی سلولی و مولکولی. 1396; 6 (4) :222-234
URL:
http://ijmcmed.org/article-1-735-fa.html
Analysis of Plasmodium vivax Apical Membrane Antigen-1 (PvAMA-1) Haplotypes among Iranian Isolates
:
(8099 مشاهده)
Plasmodium vivax
apical membrane antigen-1(PvAMA-1) is a surface protein with polymorphic sites. This study was aimed to analyze the polymorphic amino acid residues at PvAMA-1 in different infected age groups.
92 blood samples were collected from south and southeast of Iran. The DNA coding for the domain I (DI), DII, and partial DIII of this antigen was amplified by Nested-PCR, and sequenced
. Nucleotide mutations were found in 49 sites and based on the amino acid sequence, 30 variable sites were detected. Age distribution of malaria cases showed that the majority of the patients were between 10 to 30 years old. The scattering plot haplotypes by age showed an increasing incidence rate with age during childhood whereas incidence was the lowest in patients under five years old. Comparison of the polymorphic sites of PvAMA-1 in Iranian isolates with those found in other geographic regions of the world indicated nine common variable positions
.
In addition, a significant dependence was found between some particular substitutions and age categories. Dependence between particular substitutions and age groups suggests that certain residues in AMA-1 are responsible for clinical attacks in different ages, likely as a result of host immune pressure
. The crystal structure of the PvAMA-1 showed that the amino acid substitutions that changed the protein charge were exclusively located in loops and turns where, the interactions with antibodies could occur. These data provide necessary information for an AMA-1 based malaria vaccine design to be effective across all ages.
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نوع مطالعه:
Original Article
| موضوع مقاله:
Genetics & Disease
دریافت: 1396/6/15 | پذیرش: 1396/8/20 | انتشار: 1396/8/25
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