visceral leishmaniasis
DESCRIPTION
Visceral Leishmaniasis. Collin Price Spring 2011. Visceral Leishmaniasis – also known as Kala Azar – is a systemic disease that primarily affects the liver, spleen, and bone marrow. Symptoms of VL include hepatosplenomegaly , high fever, anemia, and weight loss. - PowerPoint PPT PresentationTRANSCRIPT
Visceral Leishmaniasis
Collin PriceSpring 2011
Visceral Leishmaniasis – also known as Kala Azar – is a systemic disease that primarily affects
the liver, spleen, and bone marrow
Symptoms of VL include hepatosplenomegaly, high fever, anemia, and weight loss
Like every disease we have studied, visceral Leishmaniasis is a disease of the poor
http://www.doctorswithoutborders.org/photogallery/2011/11india/image001.jpg
VL is endemic in 88 countries, with 90% of cases occurring in Brazil, Bangladesh, India, Nepal and Sudan.
The causal agent is a protozoan of genus Leishmania - related to organisms causing Sleeping
Sickness, Chagas, and Malaria
Leishmaniasis is transmitted via a blood sucking sand fly of the species
Phlebotominae
Look familiar?
Proteins on the surface of the promastigote allow the organism to escape lysis by the complement system
Once inside the macrophage, the protozoan relies on a trans-membrane pump to acquire iron for
metabolism
The best way to diagnose infection with Leishmaniasis is visualization of the amastigotes in blood or
aspirates from infected tissue
http://cal.vet.upenn.edu/projects/parasit06/paraav/images/10-21.jpg
Classically, therapy has involved treatment with antimonial compounds
Miltefosine might be the answer, with a 95% cure rate!
35 Countries around the world have reported cases of VL/HIV co-infection
http://www.who.int/leishmaniasis/burden/hiv_coinfection/en/leishmaniasis_hiv_countries.gif
Rescue in Sudan“Where else in the world could 50% of the population die without
anyone knowing?”-Dr. Jill Seaman
REFERENCES Pictures
http://www.sciencephoto.com/media/305800/enlarge (SEM) http://www.vet.uga.edu/vpp/archives/NSEP/Brazil2002/leishmania/Images/
Leish91.jpg http://
www.vet.uga.edu/vpp/archives/NSEP/Brazil2002/leishmania/Images/Leish91.jpg http://www.who.int/leishmaniasis/leishmaniasis_maps/en/index.html http://it.wikipedia.org/wiki/File:Phlebotomus_pappatasi_bloodmeal_begin.jpg http://www.nature.com/nrmicro/journal/v5/n11/images/nrmicro1748-f3.jpg http://www.doctorswithoutborders.org/photogallery/2011/11india/image001.jpg http://microbeworld.org/images/stories/twip/l_donovani.jpg http://
www.stanford.edu/group/parasites/ParaSites2010/Zach_Wettstein/Development%20of%20Drugs%20for%20the%20Treatment%20of%20Visceral%20Leishmaniasis.html
http://3.bp.blogspot.com/_BVAT0FI3vWo/TGf539li0eI/AAAAAAAAAvI/0ReeaJ6VY78/s1600/Leishmania_tropica_7.jpg
http://animal.discovery.com/invertebrates/monsters-inside-me/cutaneous-leishmaniasis-leishmania/images/cutaneous-leishmaniasis-leishmania.jpg
REFERENCES Information
http://en.wikipedia.org/wiki/Visceral_leishmaniasis#cite_note-Dowell1997-38 Amanda C Stanley1 and Christian R Engwerda1. Balancing immunity and pathology
in visceral leishmaniasis. Immunology and Cell Biology (2007) 85, 138–147. doi:10.1038/sj.icb.7100011; published online 5 December 2006
http://biology-today.com/general-zoology/invertebrate-zoology/structure-of-leishmania/
Alison M. Shakarian, Glen C. McGugan, Manju B. Joshi, Mary Stromberg, Lauren Bowers, Christine Ganim, Jessica Barowski and Dennis M. Dwyer. Identification, characterization, and expression of a unique secretory lipase from the human pathogen Leishmania donovani. Molecular and Cellular Biochemistry. Volume 341, Numbers 1-2, 17-31
Emanuela Handman. Leishmaniasis: Current Status of Vaccine Development. Clin. Microbiol. Rev. April 2001 14:229-243.
Christian R Engwerda, Paul M Kaye, Organ-specific immune responses associated with infectious disease, Immunology Today, Volume 21, Issue 2, 1 February 2000, Pages 73-78
J Román Luque-Ortega, José M Saugar, Cristina Chiva, David Andreu, Luis Rivas. Identification of new leishmanicidal peptide lead structures by automated real-time monitoring of changes in intracellular ATP. Biochem. J. (2003) 375 (221-30)