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.
Q. Food borne infections? Food borne infections, as you may recall reading earlier, are caused by the ingestion of pathogenic microorganisms that penetrate the intestinal muco
Explain Clinical dietitians Clinical dietitians, sometimes called therapeutic dietitians, are associated with health care institutes, hospitals and nursing homes. Depending on
What is resting membrane potential of a neuron? What is the function of sodium potassium pumps in maintaining it?
Explain Control of Oedema in Nutritional Care? Low levels of circulating proteins lead to oedema due to loss of colloidal osmotic pressure to maintain the normal fluid shift me
Body temperature is homeostatic ally regulated around a set point. Given your knowledge of negative feedback and homeostatic control system, predict whether narrowing or widening o
Q. What is the molecular formula of glucose? How can its structural formula be explained? The molecular formula of glucose is C 6 H 12 O 6 . Structurally glucose is a hexago
Q. Why does thymine replace uracil in DNA? The difference between DNA and RNA is existence of a hydroxyl (-OH) group on 2' carbon of the ribose sugar in the backbone. Removal o
mendal laws
Ask question #Minimuwwm 100 words accepted#
Q. Explain about Utility Gloves? Because of the increased risk of percutaneous injury during instrument cleaning (100% of the Faculty incidents reported in academic year 2003/0
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