Aim of this study was to standardize the Antimalarial drug sensitivity testing using microtitre plate method similar to WHO III plate method. The study was conducted over a period of two years from January 2013 to December 2014. Total 44 patient samples were included in this study (22 were P. falciparum and 22 were P. vivax). 68.18% of P. falciparum blood samples showed resistance to chloroquin...

During the years 2000-2001, the rural populations of 5 districts in Punjab were examined for malarial parasites. The incidence of Plasmodium falciparum was more than double (8.98%) that of P. vivax (4.06%). The incidence was higher among male subjects (53.5%) than females (46.9%). The largest number of infected male subjects was found in Sheikhupura district (77.78%). Chloroquine resistance was...

OBJECTIVE To determine the occurrence and species distribution of malaria and the extent of chloroquine resistance among security forces personnel in a selected region of the Northern Province of Sri Lanka. DESIGN A descriptive study. SETTING Mannar District in the Northern Province. METHODS Nine hundred and seventy five security personnel were screened for malaria by microscopy. Those wh...

Ever since the discovery of the first case of chloroquine resistance along the Thai-Combodian border in the late 1950s, Southeast Asia has played an important role as a focus for the development of drug resistance in Plasmodium falciparum. Although the first case of quinine resistance had been reported much earlier from South America, the onset of chloroquine resistance marked the beginning of ...

background: point mutations in the genes, pfcrt and pfdhfr , have been identified elsewhere as strongly associated with re­sistance to chloroquine (cq) and pyrimethamine, respectively.  methods: using a restriction digestion method, we report the frequency of two important mutations, t76 and asn108, re­spon­sible for conferring resistance to chloroquine and pyrimethamine, respectively, in patie...

Chloroquine resistance in the human malaria parasite, Plasmodium falciparum, arises from decreased accumulation of the drug in the ;digestive vacuole' of the parasite, an acidic compartment in which chloroquine exerts its primary toxic effect. It has been proposed that changes in the pH of the digestive vacuole might underlie the decreased accumulation of chloroquine by chloroquine-resistant pa...

In 1993, Malawi became the first African country to replace chloroquine with sulfadoxine-pyrimethamine nationwide in response to high rates of chloroquine-resistant falciparum malaria. To determine whether withdrawal of chloroquine can lead to the reemergence of chloroquine sensitivity, the prevalence of the pfcrt 76T molecular marker for chloroquine-resistant Plasmodium falciparum malaria was ...

The in vitro activities of new organometallic chloroquine analogs, based on 4-amino-quinoleine compounds bound to a molecule of ferrocene, were evaluated against chloroquine-susceptible, chloroquine-intermediate, and chloroquine-resistant, culture-adapted Plasmodium falciparum lineages by a proliferation test. One of the ferrocene analogs totally restored the activity of chloroquine against chl...

Over recent years many antimalarial drugs have been rendered useless by the development of resistance by the malaria parasite. New antimalarials are rapidly suffering the same fate as the traditional therapies and yet a biological understanding of the mechanisms of resistance has, until recently, not been described. This review describes recent work which has identified the mechanism of resista...