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The emergence of Plasmodium falciparum resistance to most currently used anti-malarial drugs is a major problem in malaria control along the Thai-Myanmar and Thai-Cambodia borders. Quinine (QN) with tetracycline/doxycycline has been used as the second-line treatment for uncomplicated falciparum malaria. In addition, QN monotherapy has been the first-line(More)
BACKGROUND Cholangiocarcinoma (CCA), or bile duct cancer, is incurable with a high mortality rate due to a lack of effective early diagnosis and treatment. Identifying cytoplasmic membrane proteins of invasive CCA that facilitate cancer progression would contribute toward the development of novel tumor markers and effective chemotherapy. MATERIALS AND(More)
Hepatocellular carcinoma (HCC) is one of the most common cancers and is associated with high mortality worldwide. The current gold standards for HCC surveillance are detection of serum α-fetoprotein (AFP) and ultrasonography; however, non-specificity of AFP and ultrasonography has frequently been reported. Therefore, alternative tools, especially novel(More)
Resistance to chloroquine is a public health problem worldwide. Polymorphisms of the Plasmodium falciparum chloroquine resistance transporter (pfcrt) and P. falciparum multidrug resistance 1 (pfmdr1) genes have been linked to chloroquine resistance. Although the K76T mutation in the pfcrt gene has been shown to be a key determinant in chloroquine(More)
We evaluated the influence of pfmdr1 mutations and copy number on in vitro artemether and lumefantrine sensitivity in 101 laboratory and adapted Thai isolates of Plasmodium falciparum. Approximately one-fourth of these isolates exhibited reduced lumefantrine susceptibility. We found that both mutations and amplification of the pfmdr1 gene influenced in(More)
The study investigated the patterns of pfmdr1 and pfcrt genetic polymorphisms in Plasmodium falciaprum isolates collected from Thailand during the periods 1988-1993 (35 isolates), and 2003 (21 isolates). Pfcrt polymorphisms were almost universal for the mutations at codons K76T, A220S, Q271E, N326S, and R371I. All parasites displayed the chloroquine(More)
Drug resistance in Plasmodium falciparum is a major problem in malaria control especially along the Thai-Myanmar and Thai-Cambodia borders. To date, a few molecular markers have been identified for anti-malarial resistance in P. falciparum, including the P. falciparum chloroquine resistance transporter (pfcrt) and the P. falciparum multidrug resistance 1(More)
The aim of the present study was to investigate antimalarial drug pressure resulting from the clinical use of different antimalarials in Thailand. The phenotypic diversity of the susceptibility profiles of antimalarials, i.e., chloroquine (CQ), quinine (QN), mefloquine (MQ), and artesunate (ARS) in Plasmodium falciparum isolates collected during the period(More)
Primaquine (PQ), an 8-aminoquinoline, is considered a tissue schizonticide drug for radical cure in vivax and ovale malaria, with minimal impact on asexual erythrocytic stages at therapeutic concentrations. Tafenoquine (TQ), a new 8-aminoquinoline analog of PQ, is active against both malaria parasite tissue and blood stages and is being promoted as a drug(More)
AbstractPiperaquine combined with dihydroartemisinin is one of the artemisinin derivative combination therapies, which can replace artesunate-mefloquine in treating uncomplicated falciparum malaria in Thailand. The aim of this study was to determine the in vitro sensitivity of Thai Plasmodium falciparum isolates against piperaquine and the influence of the(More)