Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Leishmanias – Flagellates
Species of the genus Leishmania are parasites of mammals including man. Leishmanias infections occur over wide regions of the world from Asia, the near and middle East to East and West Africa and from Mexico to the northern part of Argentina.Sandflies (Phlebotomus or Lutzomia species) serve as vectors for all species of Leishmania.
The parasite is flagellated in sandfly. During its blood meal, the fly introduces the parasite into the skin of the mammalian host. The wandering macrophages engulf these parasites. In the host cell they lose the free flagellum and become rounded. The parasites multiply by repeated binary fission, emerge from the host cell by destroying it and invade newer macrophages to repeat the propagative cycle. When a sandfly feeds on the blood of an infected vertebrate, it also ingests the infective stage of Leishmania. Leishmania species cause a wide range of disease. L. donovani, which is widely distributed in some regions of Latin America, causes a serious and fatal disease, kala-azar or visceral leishmaniasis -involving liver and spleen. In Assam, 25 per cent of the population was deleted between 1890 to 1900 due to kala-azar.
Figure:(a) Leishmania donovani in macrophages (b) Child with swollen abdomen due to enlarged spleen
Sometimes severe dermal infection appears in those individuals who have earlier had kala-azar infection. Ltropica which mainly occurs in the West and Central India and arid regions of the eastern hemisphere, causes cutaneous leishmaniasis or oriental sores. This is a mild disease in which at the site of each bite by the fly, a small ulcer is produced.
E mb ryonic stem cells (ES): These are pleuripotent cells of early embryo (blastocyst) capable of giving rise to all differentiated cells, including germ line cells. Em
Rapid Crawling and Swimming Rapid Crawling This movement depends upon mainly on the contralateral waves of contraction of the longitudinal muscles of the body wall that
Explain Viscosity of Gastrointestinal Contents Delay Absorption? 1. Inadequate mixing of luminal contents due to increased viscosity may slow the movement of digestive enzymes
Q. What are the moderate intensity exercises? - Walking for 1/2% hr or jogging - Biking leisurely for 1/2 hr. - Playing tennis, swimming, gardening, golfing - Vacuumin
what are the advanced characters of phylum annelida that cannot be found in other phyla?
Define Classification - Taxonomy Classification is the arrangement of organisms into groups having common characteristics. These groups are then arranged according to a system.
Totipotency and Pluripotency In the starting we said that the fertilized egg cell (zygote) has the capacity or potentiality to give rise to all kinds of cell types, like a bl
Explain Terbinafine Terbinafine (Lamisil) - Terbinafine is a synthetic allylamine approved by the FDA for treatment of onychomycosis of the toenail or fingernail due to derm
PSYCHOLOGICAL DISORDERS - 1 . Anxiety Disorders 2 . Obsessive compulsive disorders 3. Attention deficit disorder 4 . Mood disorders
A 19 year old model for Glamour magazine tripped over an extension cord causing injury to her epidermis. She is afraid the injury will leave a scar. Based on your knowledge of rege
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd