Entamoeba histolytica is a parasitic protozoan responsible for the disease amoebic dysentry. Entamoeba histolytica life cycle : There are two forms - 1. cyst : non-mobile form 2. trophozoit : Mobile form A.Cyst entry : Injection of food or water contaminated with Entamoeba histolytica cyst will move through the mouth down the oesophagus into the stomach. Cysts are resistant to gastric environment and passes through the stomach. B.Excystation : Each cyst can divide and produce 8 trophozoits the mobile form of Entamoeba histolytica in the small intestine. C.Multiplication : The trophozoites will then move to colon of large intestine then multiply and colonizes. Entamoeba can cause 2 types of infection : 1. non-invasive: 90% 2. invasive : 10% 1. Non-invasive : Trophozoits remain on the surface of mucus layer of colonic epithelium and multiplies by binary fission. This non-virulent form ...
Mode of infection : Infection of freshwater plants with metacercariae or by drinking water with floating metacercariae example lettuce green salad. Definite host : human Intermediate host : freshwater snails Reservoir host : sheep Infective form : metacercariae Pathogenicity : While passing through the liver the large form causes hepatitis damage. may cause abscesses of lungs , body wall on fibrotic lesions. produces severe parenchymal disease of liver for which the parasite is called liver fluke and disease is known as liver rot. necrosis of liver anaemia common inflammation and damage of bile duct. respiratory blockage of lungs Hyperplasia Symptoms : abdominal pain Anemia prolonged high fever Nausea Jaundice Lethargy Tenderness Hepatomegaly fatty food intolerance Treatment : B ithional : Highly Effective large dose high cost long period Tricl...
Symptoms : Most infected individuals have no symptoms . Paralytic disease 1% high fever Intense muscle pain from spasm and weakness loss of muscle reflexes paralysis asymptomatic Affect larger proximal muscles specially legs infants develop acute flaccid paralysis floppy baby syndrome Diaphragm motor nerves are affected difficulty in breathing Diagnosis: Besed on Polio virus recovery from stool sample throat swab lumbar puncture cerebral fluid removed from Lamba Sach might have high white blood cells or poliovirus RNA Treatment: Pain medicines for muscle spasm bladder decompression respiratory support for trouble breathing by Iron lung machine. Polio vaccine and post polio syndrome will be discussed in next video.
can body parts that have been affected by polio fully recover? if so what treatment would you recommend
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