title: Widespread occurrence of the Plasmodium falciparum chloroquine resistance transporter (Pfcrt) gene haplotype SVMNT in P. falciparum malaria in India.
abstract: The Plasmodium falciparum chloroquine resistance transporter (Pfcrt) K76T mutation and haplotype (amino acids 72-76) and the P. falciparum multidrug resistance 1 (Pfmdr1) mutation (N86Y) were analyzed as markers of chloroquine resistance in the DNAs of 73 blood samples from patients with P. falciparum malaria in India. Seventy of the 73 DNAs had the Pfcrt K76T mutation. Of these, 66 had the SVMNT haplotype and four had CVIET, the African/Southeast Asian haplotype. Only 20 of 69 DNAs had the Pfmdr1 N86Y mutation. It is surprising that the Pfcrt haplotype in India is predominantly SVMNT, rather than that seen in Southeast Asia. The widespread prevalence of the Pfcrt K76T mutation is a cause for concern.
authors.affiliation: Department of Biochemistry, Indian Institute of Science, Bangalore, India.
authors.forename: P G
authors.initials: PG
authors.lastname: Vathsala
authors.forename: A
authors.initials: A
authors.lastname: Pramanik
authors.forename: S
authors.initials: S
authors.lastname: Dhanasekaran
authors.forename: C Usha
authors.initials: CU
authors.lastname: Devi
authors.forename: C R
authors.initials: CR
authors.lastname: Pillai
authors.forename: S K
authors.initials: SK
authors.lastname: Subbarao
authors.forename: S K
authors.initials: SK
authors.lastname: Ghosh
authors.forename: S N
authors.initials: SN
authors.lastname: Tiwari
authors.forename: T S
authors.initials: TS
authors.lastname: Sathyanarayan
authors.forename: P R
authors.initials: PR
authors.lastname: Deshpande
authors.forename: G C
authors.initials: GC
authors.lastname: Mishra
authors.forename: M R
authors.initials: MR
authors.lastname: Ranjit
authors.forename: A P
authors.initials: AP
authors.lastname: Dash
authors.forename: P N
authors.initials: PN
authors.lastname: Rangarajan
authors.forename: G
authors.initials: G
authors.lastname: Padmanaban
mesh_terms: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1 / Q000235:genetics; D000818:Animals; D002738:Chloroquine / Q000494:pharmacology*; D004351:Drug Resistance / Q000235:genetics; D006239:Haplotypes; D006801:Humans; D016778:Malaria, Falciparum / Q000188:drug therapy*; D008565:Membrane Proteins / Q000235:genetics*; D026901:Membrane Transport Proteins; D010963:Plasmodium falciparum / Q000187:drug effects / Q000235:genetics*; D015800:Protozoan Proteins
chemical_list: D020168:ATP Binding Cassette Transporter, Subfamily B, Member 1; D008565:Membrane Proteins; D026901:Membrane Transport Proteins; C416369:PfCRT protein, Plasmodium falciparum; D015800:Protozoan Proteins; D002738:Chloroquine