Navigation Links
Low-dose treatment may block malaria transmission
Date:11/14/2013

Lower doses of the antimalarial drug primaquine are as effective as higher doses in reducing malaria transmission, according to a study published today in Lancet Infectious Diseases by London School of Hygiene & Tropical Medicine researchers.

Primaquine is one of the few antimalarial drugs that targets the transmission stages of the malaria parasite, the gametocytes, and is therefore considered to be an important tool for malaria elimination.

However, standard doses of the drug cause reduced blood count in individuals with a deficiency in glucose-6-phosphate dehydrogenase (G6PD) enzyme. This red blood cell disorder is common in malaria endemic areas, and has therefore limited the use of primaquine in malaria programmes, and prompted the World Health Organization (WHO) to advise a reduction in dosage from 0.75 mg/kg to 0.25mg/kg. But until now, the efficacy of lower doses of primaquine had not been formally evaluated.

The study, carried out in Jinja, Uganda, treated G6PD-normal children with a conventional anti-malarial drug either on its own or with one of three different doses of primaquine. The subsequent carriage of malaria gametocytes was monitored for two weeks and safety outcomes were monitored for four weeks. Results showed that a dose of 0.4 mg/kg, approximately half of the previously recommended dose (0.75 mg/kg), was as effective at reducing the transmission potential of individuals with malaria.

These results establish that low dose primaquine is still effective and safe in a G6PD-normal population, and paves the way for using low-dose primaquine as a component of strategies to reduce malaria transmission and to stop the spread of drug-resistant malaria parasites.

The next step is to include the current WHO-recommended 0.25 mg/kg dose of primaquine in efficacy studies, and to test the safety of low dose primaquine in G6PD-deficient individuals.

Lead author Dr Chi Eziefula, Wellcome Trust c
'/>"/>

Contact: Katie Steels
press@lshtm.ac.uk
44-020-792-92802
London School of Hygiene & Tropical Medicine
Source:Eurekalert

Page: 1 2

Related biology news :

1. Northeastern researchers have discovered a new treatment to cure MRSA infection
2. Wayne State researchers discover specific inhibitor for rheumatoid arthritis treatment
3. Discovery may lead to new treatments for allergic diseases
4. Research reveals new understanding, warning signs, and potential treatments for multiple sclerosis
5. Genetic aberration paves the way for new treatment of cancer disease
6. Breakthrough by Temple researchers could lead to new treatment for heart attack
7. Queens University in €6m bid to find new Cystic Fibrosis treatments
8. BUSM researchers identify molecule that could aid lung cancer detection, treatment
9. Salvianolate for treatment of cerebral ischemia-reperfusion injuries
10. UAlberta medical researchers discover potential new treatment for colitis
11. New eye treatment effective in laboratory tests
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/23/2014)... researcher has shed light on how an estimated one ... outback have become reviled as pests and culled on ... and Sustainability Institute at the University of Exeter,s Penryn ... from their historic role helping to create the country,s ... , The deserts of the Australian outback are a ...
(Date:4/23/2014)... is leading a 2 million Food Standards Agency (FSA) ... premises and industry workers. , Norovirus outbreaks can ... a batch of frozen strawberries infected 11,000 people in ... understanding of which strains cause infection and which foods ... , Researchers will produce data that will help ...
(Date:4/22/2014)... a five-year, $3 million study to determine whether an ... of dissolved organic matter (DOM) through the Connecticut River ... composition and water quality of the watershed and Long ... Foundation,s MacroSystems Biology program, researchers will collect data from ... Canada and runs through five U.S. states, before emptying ...
Breaking Biology News(10 mins):How Australia got the hump with 1 million feral camels 2How Australia got the hump with 1 million feral camels 3Connecticut River watershed study will assess impacts of extreme rain events 2Connecticut River watershed study will assess impacts of extreme rain events 3
... State University researcher has demonstrated that a variety of environmental ... animal but the next three generations of its offspring. , ... the way genes turn on and offthe epigenetic effect studied ... on in the current issue of the online journal ...
... sizes. Scientists have discovered simple rules that control leaf shape during ... able to accurately emulate leaf growth from a bud. "A ... said lead author Samantha Fox from the John Innes Centre on ... bud, not flat with a pointed tip." By creating a ...
... On March 9, the New York Academy of Sciences ... of Established Regulatory Guidance." This full-day conference will explore ... challenges for follow-on versions of complex drugs. , On ... draft guidelines for implementing the Biologics Price Competition and ...
Cached Biology News:Effects of environmental toxicants reach down through generations 2First model of how buds grow into leaves 2Newly released FDA draft guidelines for biosimilar drugs to be discussed at conference 2
(Date:1/15/2014)... 15, 2014 The Microcompetition with Foreign DNA ... One of these latent viruses is the Epstein Barr Virus ... Rheumatoid arthritis (RA) is a chronic inflammatory disease that destroys ... found that RA patients have high concentrations of EBV DNA ...
(Date:1/15/2014)... AudioNotch is the internet's leading provider ... treatment of tinnitus. Patients listen to sound therapy that ... period of weeks to months, their tinnitus volume decreases. , ... Notched Music and Notched White Noise. Now, AudioNotch is pleased ...
(Date:1/14/2014)... 14, 2014 Histogen, Inc., a regenerative ... cells grown under simulated embryonic conditions, today announced that ... Suneva Medical, Inc. for physician-dispensed aesthetic products containing Histogen’s ... This agreement is an amendment to the existing license ...
(Date:1/14/2014)... 2014 The largest international professional organization of ... therapeutic derivatives thereof has endorsed an educational program ... the challenges of adulterated herb and botanical products. ... The Society for Medicinal Plant and Natural ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 2World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 3World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 4World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 5World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 6World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 7World's Largest Group of Medicinal Plant Researchers Endorses ABC-AHP-NCNPR Botanical Adulterants Program 8
... Guidance New Launches Should Contribute ... Par,Pharmaceutical Companies, Inc. (NYSE: PRX ) today announced ... Quarter and Six Month Results, For the second quarter ... and a net loss of $20.1 million, or $0.60 per ...
... Aug. 7 /PRNewswire-FirstCall/ - Chromos Molecular,Systems Inc. ("Chromos" ... into an arrangement agreement (the "Arrangement Agreement") dated,August ... ("Calyx"), a,wholly-owned subsidiary of Chromos, and Modatech Systems ... agreement have agreed to effect a plan,of arrangement ...
... CITY, Aug. 7 Thousands of AIDS activists,gathered today ... a key event of the XVII International AIDS Conference. ... protections,for people living with HIV and those most affected ... use drugs, and men who,have sex with men., ...
Cached Biology Technology:Par Pharmaceutical Reports Second Quarter 2008 Results 2Par Pharmaceutical Reports Second Quarter 2008 Results 3Par Pharmaceutical Reports Second Quarter 2008 Results 4Par Pharmaceutical Reports Second Quarter 2008 Results 5Par Pharmaceutical Reports Second Quarter 2008 Results 6Par Pharmaceutical Reports Second Quarter 2008 Results 7Par Pharmaceutical Reports Second Quarter 2008 Results 8Chromos enters into an Arrangement Agreement 2Chromos enters into an Arrangement Agreement 3Thousands Rally in Mexico City and Call for Human Rights Protections in Global AIDS Response 2Thousands Rally in Mexico City and Call for Human Rights Protections in Global AIDS Response 3Thousands Rally in Mexico City and Call for Human Rights Protections in Global AIDS Response 4
Prepared from plasminogen by activation with immobilized human uPA...
Human VEGF R3/Flt-4 Phycoerythrin MAb (Clone 54733)...
Human GFR alpha-4 Affinity Purified Polyclonal Ab...
Rat CNTF R alpha Affinity Purified Polyclonal Ab...
Biology Products: