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. 2023 Jun 3;15(6):375. doi: 10.3390/toxins15060375

Table 3.

Plasmodium drug resistance, the location where documented and its resistance mechanism.

Parasite Drug Resistance Location Where Plasmodium Resistance Has Been Documented Resistance Mechanism Ref.
P. vivax CQ Asia and Oceanian (Papua New Guinea and Indonesia), South America (Brazil) Africa (Madasgascar and South and Southeast Asia (India, Myanmar, Nepal, and Thailand) Develops a transporter for chloroquine, encoded pvcrt-o
Mutation of pvmdr1 and pvdhfr
[72,73,74,75,76]
MQ Southeast Asia (Western border of Thailand) and South America (Brazil) Amplification of pvmdrl and over-expression of pghl [75,77]
AQ Southeast Asia (Western border of Thailand) Reduced dhfr affinity [75,76]
P. falciparum ART Southeast Asia and East Asia (Thailand, Vietnam, Myanmar, Laos, China), and Sub-Saharan Africa Not well known
Mutation of pfk13 in specific sequences of the BTB-POZ domains and six kelch domains (probably)
[78,79]
AS Southeast Asia (Western
Cambodia)
[78]
AR Southeast Asia and Sub-Saharan Africa [78,79]
LR Southeast Asia and Sub-Saharan Africa [77,78]
CQ Southeast Asia (Western border of Thailand), Africa (Sub-Saharan Africa), South America (Brazil) Develops a transporter for chloroquine, encoded pfcrt;
Mutation of pfmdr1 and pfdhfr
[75,80]
AQ Western border of Thailand Reduced affinity for binding of the DHFR competitive inhibitor [76]
QUIN Southeast Asia (Thailand, Thai Myanmar and Thai-Cambodian borders) Amplification of pfmdrl and pghl overexpression [76,81,82]
PG Southeast Asia (Thailand, Thai Myanmar and Thai-Cambodian borders) Reduced affinity for binding of the dhfr competitive inhibitor [76,81]
MQ Southeast Asia (Western border of Thailand, Thai-Myanmar and Thai-Cambodian borders) South America (Brazil) Amplification of pfmdrl and pghl over-expression [75,76,81,82,83,84]
HF Southeast Asia (Thailand) Amplification of pfmdrl and pghl over-expression [80,81]
SULF Southeast Asia (Western border of Thailand, Thai-Myanmar
and Thai-Cambodian borders)
dhps mutations [75,76,81]
PMT Southeast Asia (Western border of Thailand, Thai-Myanmar
and Thai-Cambodian borders)
Reduced affinity for binding of the dhfr competitive inhibitor [75,76,81]

Abbreviations: CQ—chloroquine; MQ—mefloquine; AQ—amodiaquine; ART—artemisinin; AS—artesunate; AR—artemether; LR—lumefantrine; QUIN—quinine; PG—proguanil; HF—halofantrine; SULF—sulfadoxine; PMT—pyrimethamine; pvcrt-oP. vivax chloroquine resistance transporter orthologue gene; pvdhfrP. vivax dihydropteroate reductase; pvmde1P. vivax multidrug resistance gene 1; pgh1—P-glycoprotein homologue 1 protein; DHFR—dihydrofolate reductase; pfk13P. falciparum Kelch protein 13; pfcrtP. falciparum chloroquine resistance transporter gene; pfmdr1P. falciparum multidrug resistance gene 1; pfdhfrP. falciparum dihydropteroate reductase; dhfr—competitive inhibitor to dihydro-folate reductase; dhps—deoxyhypusine synthase; BTB-POZ—domain-containing protein 1.