No abstract available.
Parasites

Testing 3286 samples of dung at 6 communes of Thua Thien - Hue province during 2001-2002 showed that: the total rate of worm infection was 53.16%, inwhich 38.47% of ascaris infection; 14.12% of trichirura and 11.59% of hook worm. In plain area along the coastline had 50% of ascaris; 23.06% of trichirura and in the delta area had 45.86% of ascaris; 13.23% of trichirura; which were higher than that in mountainous areas. The rate of hook worm infection in mountainous areas was 25.54%. Combined infection of 2 or 3 species of worm accounted for 19.12%.
Parasites ; Infection

We synthesized C-10 substituted triazolyl artemisinins by the Huisgen cycloaddition reaction between dihydroartemisinins (2) and variously substituted 1, 2, 3-triazoles (8a-8h). The antimalarial activities of 32 novel artemisinin derivatives were screened against a chloroquine-resistant parasite. Among them, triazolyl artemisinins with electron-withdrawing groups showed stronger antimalarial activities than those shown by the derivatives having electron-donating groups. In particularly, m-chlorotriazolyl artemisinin (9d-12d) showed antimalarial activity equivalent to that of artemisinin and could be a strong drug candidate.
Artemisinins ; Cycloaddition Reaction ; Parasites

Eosinophils are primarily tissue resident cells, and play important roles in host's immune responses and maintenance of chronic infection during infection with tissue-invasive parasitic helminth. Such parasite secretes particular molecules to evade eosinophil-mediated helminthotoxicity. Continuous competition between eosinophil and parasite leads to stable equilibria between them. Recent evidence provides a concept that not only eosinophils contribute to parasite's survival but also parasite modulates host's immune response. Therefore, it is important to know complex interrelationship between eosinophil and parasite to understand how gently parasite talk to eosinophils and how carefully eosinophils listen to parasite's voice. In this regard, this review examin papers about eosinophil-mediated tissue inflammatory responses in response to helminthic parasite.
Eosinophils ; Helminths ; Parasites ; Voice

A total of 238 stool samples were taken from Ede ethnic people at three villages of DakLak province. The results showed that: the rate of common parasite infection was 81.5%. The highest rate was ankylostomiasis (61.5%) and the lowest was trichuriasis 6.7%. No difference of rate was recorded in sex and age groups of habitants. It was also found that 87% of the households have no latrine.
Parasites ; Ethnic Groups

Research on vetorial role on forest malaria at 4 different ecological arears such as in the villages, forest fringe, deep forest and plot huts in Khanh Phu from Janruary to December, 2002. The results: The Anopheles dirus species component in the plot hut areas and deep forest are not more difference than in the villages. An.dirus account for 83.1% in plot huts and 96.9% in deep forest. The malaria transmission of An.dirus is very high in the plot huts areas and deep forests. The malaria infection risk is gradually increased from villages to forest fringe, then the plot huts in deep forests. Especially, the malaria infection risk in the plot hut areas and deep forests is over 20 fold higher than that in the villages
Malaria ; Parasites ; Disease

A total of 40 species of nematodes belong to Oxyurida order that parasitized in vertebrates, were discovered and listed in Vietnam up to now. Among them, 3 species of nematode parasite in human and primates, including: Enterobius vermincularis, E. bipapillosus and E. nyctecebi. Enterobius vermincularis commonly parasitize in human and primates. E. bipapillosus and E. nyctecebi are popular and parasitize in some species of primates but not found in human
Enterobius ; Parasites ; Human ; Vietnam

From July 2001 to Jan 2002, in 5 various locations along the Set River and KimNguu River in ThanhTri rural district in Hanoi, 120 samples of vegetable irrigated with waste water from these rivers were studied on. The 3,33% of samples had got positive reaction to Asc mousearis egg ;36,7% to Cryptosporidium and 45% to Cyclospora
Parasites ; Intestinal Diseases ; Vegetables

No abstract available.
Aged* ; Humans ; Leishmaniasis* ; Parasites*

Introduction: Dioctophyma renale, also known as the “giant kidney” worm is the largest nematode that infects mammals. Most commonly, it infects dogs and only a few cases of human infestation have been reported. Case Presentation: In this case, we present a 71-year-old male with a history of right flank pain, painless hematuria, obstructive urinary symptoms and occasional passage of a long red meat-like structure via urethra. Previous ultrasonography revealed a renal mass that was interpreted as renal malignancy. Patient was advised radical nephrectomy with biopsy; however, he was lost to follow up. After 8 years, he again presented with a 2-month history of right flank pain, gross hematuria, unintentional weight loss and obstructive urinary symptoms. He was admitted to our institution and laboratory findings revealed microcytic hypochromic anemia. Ultrasound showed a focal bulge in the superior wall of the urinary bladder and an enlarged right kidney with a large heterogeneous solid structure. Insertion of a foley catheter relieved the urinary obstruction and there was noted passage of a single roundworm measuring 55 cm by 0.32 cm. The specimen was sent for histopathology and microscopic examination revealed a necrotic body of a roundworm consistent with Dioctophyma renale. Case Discussion The clinical manifestations of D. renale infection are non-specific and the diagnosis can be a challenge as it commonly mimics renal malignancy and other intra-abdominal tumors. The diagnosis is often an incidental finding of the parasite on necropsy or by finding ova in the urine. The clinical findings of painless hematuria, unintentional weight loss and an ultrasound finding of renal mass usually point toward the diagnosis of renal cell carcinoma. As we present this case, it will be highlighted that such signs and symptoms, such as painless hematuria, unintentional weight loss and ultrasound finding of a renal mass, can also be found in patients with rare human parasitism from Dioctophyma renale.
Parasites ; Dioctophymatoidea ; Carcinoma ; Kidney