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PubMed Journals Articles About "Artemether Lumefantrine Malaria" - Page: 5 RSS

21:01 EST 22nd January 2019 | BioPortfolio

Artemether Lumefantrine Malaria PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Artemether Lumefantrine Malaria articles that have been published worldwide.

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Showing "artemether lumefantrine Malaria" PubMed Articles 101–125 of 433

Mechanisms of artemisinin resistance in Plasmodium falciparum malaria.

Artemisinin-based combination therapies (ACTs) have substantially reduced worldwide malaria burden and deaths. But malaria parasites have become resistant to artemisinins. Prior studies suggested two different molecular pathways of artemisinin-resistance. Here we unify recent findings into a single model, where elevation of a lipid, phosphatidylinositol-3-phosphate (PI3P) results in vesicle expansion that increases the engagement with the unfolded protein response (UPR). Vesicle expansion (rather than incre...


Whole blood transcriptome changes following controlled human malaria infection in malaria pre-exposed volunteers correlate with parasite prepatent period.

Malaria continues to be one of mankind's most devastating diseases despite the many and varied efforts to combat it. Indispensable for malaria elimination and eventual eradication is the development of effective vaccines. Controlled human malaria infection (CHMI) is an invaluable tool for vaccine efficacy assessment and investigation of early immunological and molecular responses against Plasmodium falciparum infection. Here, we investigated gene expression changes following CHMI using RNA-Seq. Peripheral b...

Increasing number of imported Plasmodium ovale wallikeri malaria in Shandong Province, China, 2015-2017.

Since 2012, no indigenous malaria case have been reported in Shandong Province, China, whereas the number of imported cases and the genetic diversity of Plasmodium spp. have increased. Beginning in 2015, the number of Plasmodium ovale cases were increased and the P. ovale wallikeri malaria case began to arise. From 2015 to 2017, a total of 677 imported malaria cases were detected and 76 P. ovalespp. isolates were identified, of which 48 were P. ovale curtisi and 28 P. ovale wallikeri. The number of P. ovale...


Capacitive malaria aptasensor using Plasmodium falciparum glutamate dehydrogenase as target antigen in undiluted human serum.

A capacitive aptasensor for detecting the malaria biomarker, Plasmodium falciparum glutamate dehydrogenase (PfGDH), directly in human serum samples developed. A thiolated ssDNA aptamer (NG3) that binds specifically to PfGDH antigen with high affinity (K= 79 nM) was used to develop the aptasensor. The aptasensor produced capacitance response at an optimized frequency of 2 Hz in a non-Faradaic electrochemical impedance based signal transduction platform. The aptasensor exhibited a wide dynamic range of 10...

The safety of atovaquone-proguanil for the prevention and treatment of malaria in pregnancy: A systematic review.

Malaria infection poses a significant risk in pregnancy, yet chemoprophylaxis for pregnant women is limited. A systematic review was conducted to evaluate the incidence of adverse outcomes after atovaquone-proguanil (AP) exposure during pregnancy.

A diagnostic performance evaluation of rapid diagnostic tests and microscopy for malaria diagnosis using nested polymerase chain reaction as reference standard in a tertiary hospital in Jos, Nigeria.

Rapid diagnostic tests are frequently used in healthcare settings across Nigeria for diagnosis of Plasmodium falciparum malaria, which is the commonest form of malaria in the country. In this study, the performance of a rapid diagnostic test (RDT) was compared with expert microscopy using the polymerase chain reaction (PCR) as the reference standard in a tertiary hospital in Jos, Nigeria.

Improved access to early diagnosis and complete treatment of malaria in Odisha, India.

In 2013, the Comprehensive Case Management Programme (CCMP) was initiated to assess the impact of universal access to diagnosis and treatment and improved surveillance on malaria transmission in different settings in Odisha state, India.

Sensitivity of vegetation to climate variability and its implications for malaria risk in Baringo, Kenya.

The global increase in vector borne diseases has been linked to climate change. Seasonal vegetation changes are known to influence disease vector population. However, the relationship is more theoretical than quantitatively defined. There is a growing demand for understanding and prediction of climate sensitive vector borne disease risks especially in regions where meteorological data are lacking. This study aimed at analyzing and quantitatively assessing the seasonal and year-to-year association between cl...

Rodent malaria models: insights into human disease and parasite biology.

The use of rodents as model organisms to study human disease is based on the genetic and physiological similarities between the species. Successful molecular methods to generate transgenic reporter or humanized rodents has rendered rodents as powerful tools for understanding biological processes and host-pathogen interactions relevant to humans. In malaria research, rodent models have been pivotal for the study of liver stages, syndromes arising from blood stages of infection, and malaria transmission to an...

Anopheles species composition and entomological parameters in malaria endemic localities of North West Colombia.

Environmental variations associated with alterations derived from human activities affect mosquito abundance and composition. The objective of this study was to evaluate species abundance, composition, biting behavior and human biting rates for Anopheles specimens collected in localities of an important malaria endemic region in NW Colombia. A total of 2,041 specimens belonging to nine species were collected in six malaria endemic localities of the Bajo Cauca region. Anopheles braziliensis was the most abun...

Malaria Makes the Most of Mealtimes.

Successive synchronized cycles of Plasmodium replication in the host's blood causes the symptoms of malaria and fuels disease transmission. In this issue of Cell Host & Microbe, Hirako et al. (2018) reveal that host circadian rhythms of inflammation and metabolism are responsible for the timing of cycles of parasite replication.

A balanced pro-inflammatory and regulatory cytokine signature in young African children is associated with lower risk of clinical malaria.

The effect of timing of exposure to first Plasmodium falciparum infections during early childhood on the induction of innate and adaptive cytokine responses and their contribution to the development of clinical malaria immunity is not well established.

Impact on the transmission of malaria with different treatment schemes in the peruvian coast and amazon region within the framework of a policy on antimalarial medications, 1994-2017.

At the end of the 90s in Peru, after determining the resistance to antimalarial drugs, a change in antimalarial treatment schemes was decided; this change included the combined therapy for P. falciparum, mefloquine/artesunate in the Amazon region, and sulfadoxine pyrimethamine/artesunate in the North coast. After two decades, and aimed at assessing the impact of these schemes on the malaria endemic, a review was conducted of malaria reports in three departments accounting for more than 70% of cases reported...

Comparación entre metodologías para el diagnóstico microscópico de malaria.

Introducción. Como parte del plan de eliminación de la malaria en Colombia, se propuso desarrollar actividades enmarcadas en la línea de trabajo: "Mejorar el acceso y la calidad del diagnóstico de malaria".Objetivo. Comparar la metodología recomendada por la Organización Panamericana de la Salus con la utilizada en Colombia para el diagnóstico de la malaria.Materiales y métodos. Se recolectaron muestras y se prepararon 88 láminas para el diagnóstico de malaria, bajo diferentes tratamientos según ...

Analysis of a vector-bias malaria transmission model with application to Mexico, Sudan and Democratic Republic of the Congo.

Malaria is a deadly disease transmitted to human through the bite of infected female mosquitoes. The aim of this paper is to study the different vector-bias values between low and high transmission areas with the examples of Mexico (low) and Sudan, Democratic Republic of the Congo (Congo, DR) (high) during malaria transmission. We develop a malaria transmission model with vector-bias and investigate the basic reproduction number, the existence of equilibria and the corresponding globally asymptotically stab...

Dominant malaria vector species in Nigeria: Modelling potential distribution of Anopheles gambiae sensu lato and its siblings with MaxEnt.

Malaria is a major infectious disease that still affects nearly half of the world's population. Information on spatial distribution of malaria vector species is needed to improve malaria control efforts. In this study we used Maximum Entropy Model (MaxEnt) to estimate the potential distribution of Anopheles gambiae sensu lato and its siblings: Anopheles gambiae sensu stricto, and Anopheles arabiensis in Nigeria. Species occurrence data collected during the period 1900-2010 was used together with 19 bioclima...

Asymptomatic Natural Human Infections With the Simian Malaria Parasites Plasmodium cynomolgi and Plasmodium knowlesi.

In Southeast Asia, Plasmodium knowlesi, a parasite of long-tailed macaques (Macaca fascicularis), is an important cause of human malaria. Plasmodium cynomolgi also commonly infects these monkeys, but only one naturally acquired symptomatic human case has been reported previously.

Malaria in early pregnancy impedes the development of the placental vasculature.

Pregnancy malaria has a negative impact on fetal outcome. It is uncertain whether infections in early pregnancy have a clinical impact by impeding the development of the placental vasculature.

Community-based prevalence of typhoid fever, typhus, brucellosis and malaria among symptomatic individuals in Afar Region, Ethiopia.

In sub-Saharan Africa, where there is the scarcity of proper diagnostic tools, febrile illness related symptoms are often misdiagnosed as malaria. Information on causative agents of febrile illness related symptoms among pastoral communities in Ethiopia have rarely been described.

Small-scale field evaluation of the efficacy and residual effect of Fludora Fusion (mixture of clothianidin and deltamethrin) against susceptible and resistant Anopheles gambiae populations from Benin, West Africa.

In recognition of the threat of insecticide resistance in vectors of malaria, the WHO Global Malaria Programme recommends the development of an appropriate and comprehensive response to insecticide resistance. In principle, good resistance management practice requires the application of multiple insecticides of different modes of action, for example, in rotations and mixtures. Insecticides recommended by the World Health Organization for indoor residual spraying and long-lasting insecticide nets are limited...

The impact of digestion is essential to the understanding of milk as a drug delivery system for poorly water soluble drugs.

Milk has previously been considered as a potential lipid-based drug delivery system for poorly water soluble drugs but it has never gained significant attention. This is in part because relying on solubility in lipid-based formulations (in this case milk) does not provide a complete picture of the behavior of such systems upon digestion. Herein, we demonstrate using time resolved X-ray scattering that the digestion of milk is actually crucial to the solubilisation of a poorly water-soluble drug, halofantrin...

Imaging & identification of malaria parasites using cellphone microscope with a ball lens.

We have optimized the design and imaging procedures, to clearly resolve the malaria parasite in Giemsa-stained thin blood smears, using simple low-cost cellphone-based microscopy with oil immersion. The microscope uses a glass ball as the objective and the phone camera as the tube lens. Our optimization includes the optimal choice of the ball lens diameter, the size and the position of the aperture diaphragm, and proper application of immersion, to achieve diagnostic capacity in a wide field of view. The re...

α-Tocopheryl succinate-suppressed development of cerebral malaria in mice.

α-Tocopheryl succinate (α-TOS), a derivative of vitamin E, is synthesized by esterification of α-tocopherol. It has been reported that α-TOS inhibits the mitochondrial complex II resulting in generation of reactive oxygen species, which triggers selective apoptosis in a large number of cancer cells, while it appears largely non-toxic towards normal cells. Plasmodium parasites are well known to have high sensitivity to oxidative stress. Thus, α-TOS is suspected to impact Plasmodium parasites by oxidativ...

Vector bionomics and malaria transmission in an area of sympatry of An. arabiensis, An. coluzzii and An. gambiae.

Despite extensive genetic studies on their variability and differentiation, few is known about the specific and relative role of An. coluzzii, An. gambiae and An. arabiensis in areas of sympatry. Indeed, their behavioral dissimilarities and divergent population dynamics can impact on malaria transmission level and intensity. This study was undertaken in four sympatric sites belonging to two different ecosystems with differential insecticide pressure to study the bionomics of these species and their relative...

Genetic characterization of Plasmodium vivax in the Kyrgyz Republic.

At the end of 2016, Kyrgyz Republic was certified by the World Health Organization as a malaria-free country, while only a decade ago this disease posed a serious health threat.. The progress achieved by Kyrgyz Republic provides a unique example of tertian (Plasmodium vivax) malaria elimination. This success was based on an integrated approach, including measures for the treatment of infected people and disease prevention, vector control and the development of an effective national epidemiological surveilla...


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