LIFE STYLE OF SCHISTOSOMA



                                               
LIFE CYCLE







*the stage in the snail include two generation of SPOROCYST
*after sporocyst,cercariae are produce within the snail
*Upon release from the snail  the infective cercariae swim, penetret theskin of the  human host
*During penetration to the human host the cercariae shed their forkedtail and become schistomalae and schistomulae migrate through several tissue and stages to their residence in the veins and mature into adult worms.
*Adult worms in human reside in the mecenteric venulesin varias location , which at time seem to be specific schistosoma japonicum is more frequently found in the Superior mesenteric vein,draining the small intestine schistosoma manson occur more often the superior   mecenterih vein draining the large intestine.
*Both japonicum and schistosoma manson can occupy either location and capable of moving beatween sites schistosomahaematobium most often occur in the venous plexus of bladder ,but it can also found in the rectal venules.
*the female deposite eggs in the small venules of the postal and perivesical system
*The eggs are moved proglessively towards the lumen of the intestine schistosoma manson and schistosoma japonicum in the bladder and ureters schistosoma haematobium and are eliminated with faeces or urine .
*Respectively various animals such as Dogs,cats,rodents ,pigs,horses and goats,serves as reservoirs for schistosoma japonicum.
DIAGNOSTIC
*observation of oval or eggs in stool or urine.
*formal ether concetration-this is a technique used to diagnos as sample is stool, we shall add formal with stool,formal used to clean all particals in stool for identify parasite that present in human body   
DISEASE
*the disease cauced by schistosoma species or clinical comlication are
schistomiasis haematobium (Bilhazia) associated with several condition
*malignancy of bladder
*ulceration of the urinary bladder
*Haematuria
*swimmers itch
*Katayama disease

Comments

Post a Comment

Popular posts from this blog

PLASMODIUM SPECIES

Image
                      Plasmodium Plasmodium species (Haemoparasite protozoa T he geographical distribution of Plasmodium   Phylum Apicomplexa, Subphylum. Order Haemosporida, Family Plasmodiidae, Genus Plasmodium and species P. falciparum, malariae, vivax, and ovale.   Common species of Plasmodium affecting humans ·                      Plasmodium falciparum – cause malignant tertian or sub tertian ·                      Plasmodium ovale – cause ovale malaria, Benign tertian malaria ·                      Plasmodium vivax – cause vivax malaria benign tertian malaria, mild ·                      Plasmodium malariae – cause malariae quartan malaria Geographical distribution Malaria is wide spread disease throughout the tropics and occurs also in many subtropical countries and parts of temperature regions. Malaria believed to be responsible for 10 -15% of death in children below 5 years of age (in Africa South of Sahara and may invade other age groups. ·  
Read more

Pinworm (Enterobrosis)

Image
                         Pinworm  Introduction Pinworm (Enterobrosis) is a benign intestinal disease caused by a short spindle-shaped worm 1/4 -1/2 inches long and whitish color. It may occur in both children and adults and usually infects the whole family. The adult worms reside in the colon of the host and the females deposit hundreds of eggs in the folds of anus usually at night. Eggs of Pinworm on fecal float E. vermicularis How is pinworm infection spread? Pinworms are spread when an infected person, most often a child, has scratched his/her bare anal area and the eggs get under the fingernails. Pinworm eggs can be spread directly from contaminated hands or indirectly through contaminated clothing, bedding, food, or other articles. Pinworm eggs can survive for 2-3 weeks on clothing, bedding or other objects. Discovery of Pinworm infection The first evidence of pinworm infection dates back to Roman-occupied Egypt (30 BC-AD 395), and the oldest known p
Read more

Gonorrhoea

Image
                            Gonorrhoea Introduction Gonorrhoea is a sexually transmissible infection caused by bacteria known as Neisseria gonorrhoeae . It usually affects the genital area, although the throat or anus (back passage) may also be affected. Gonorrhoea affects both men and women and is easily transmitted during vaginal intercourse. It can also be transmitted during anal or oral sex. Neisseria gonorrhoeae Infection in tongue due to oral sex History The exact time when gonorrhea started cannot be ascertained. Earliest records of the disease are found from 1611 when the English parliament enacted a law to ensure that the spread of the infection is decreased and curbed. This was followed by a similar law in 1256 in France during the reign of Louis IX. The symptoms of the infection were observed when the crusaders lay siege of Acre. After the Pope Boniface secularized the practice of medicine, the doctors began to treat common men as well as prostitu
Read more