Results 1 - 10 of 59
Results 1 - 10 of 59. Search took: 0.017 seconds
|Sort by: date | relevance|
[en] Untreated wastewater sampled from Damascus sewage water treatment plant containing nematode Ascaris lumbricoides ova were treated using gamma irradiation (doses between 1.5 and 8 kGy), immediately after irradiation the morphological and developmental status of eggs was examined microscopically. Major morphological changes of the contents of the eggs were detected. These eggs were incubated for 8 weeks, after this period no larvae 'inside the eggs' were observed. Thus the morphological changes can be used as a viable parameter
[en] Ascariasis is one of the most common helminthic disease worldwide and evoked variable clinical manifestations by the migration of worm in the alimentary and biliary tract. The ultrasonographic detection of ascaris in the small bowel is relatively difficult, and no report on the ultrasonographic findings have been published in Korea. On abdominal ultrasonography, ascaris is seen as an intraluminal tubular structure with 4 linear echogenic stripes and movement. We report a case of ascaris in the small bowel detected by abdominal ultrasonography.
[en] Technical elaboration of in vitro incubation of Parascaris equorum gonads with 3H-uridine has permitted, for the first time, the study of RNA synthesis during oogenesis along the whole gonadic tube. In germ cells, oocytes in diakinesis (oviduct) and in division of maturation (uterus) show no label. On the contrary oogonia and growing oocytes in ovary are labelled. RNA snthesis is always detected in all parietal cells but is more active in oviduct and uterus where the gonadic wall is particularly developed
[fr]La mise au point d'une technique d'incubation in vitro des gonades de Parascaris equorum en presece d'uridine tritiee, a permis d'etudier, pour la premiere fois, la synthese des ARN tout au long de l'ovogenese de ce nematode. En ce qui concerne les cellules germinales, les ovocytes diacinetiques (oviducte) et en division de maturation (uterus) n'incorporent pas, alors que, dans l'ovaire, les ovogonies et les ovocytes I en accroissement sont nettement marques. Dans les cellules somatiques de la paroi de la gonade, on detecte toujours une synthese d'ARN particulierement active au niveau de l'oviducte et de l'uterus ou la paroi est beaucoup plus developpee qu'au niveau de l'ovaire
[en] We report the ultrasonographic findings of a 60 year old woman with pseudotumorous form of ascariasis. Real-time ultrasonographic examination using a curved array transducer revealed grossly thickened small bowel loops, multiple small circular deposits throughout the peritoneal cavity, and a moderate amount of ascites. The English literature on the different forms of abdominal ascariasis is reviewed. Specific signs, which include the 'strip' sign, the 'four-lines', 'inner tube', or 'double tube' sign, the 'bull's eye' or 'target' sign, a 'worm mass' or 'spaghetti-like' appearance, and the 'zig-zag' sign can be present in any form of abdominal ascariasis, as they represent the image of the Ascaris worms visualized under ultrasonographic examination. However, the non-specific signs are not peculiar to A. lumbricoides infections, but are results of secondary changes due to A. lumbricoides infections in the corresponding organs
[en] In order to investigate the effect of UV radiation on the development of Ascaris lumbricoides larvae, eggs were exposed to increasing UV doses. Filtered wastewater from the secondary effluent taken from the Damascus wastewater treatment plant (DWTP) was used as irradiation and incubation medium. The progressive and accelerated embryonation stages were microscopically observed and the percentages of completely developed larvae were determined weekly. Results indicated that the UV radiation accelerated the development of larvae with increasing UV dose. Preliminary information about the relationship between the UV radiation dose and rate of embryonation is also presented
[en] The pyruvate dehydrogenase complex (PDC) from body wall muscle of the porcine nematode, Ascaris suum, plays a pivotal role in anaerobic mitochondrial metabolism. As in mammalian mitochondria, PDC activity is inhibited by the phosphorylation of the αPDH subunit, catalyzed by an associated PDH/sub a/ kinase. However, in contrast to PDC's isolated from all other eukaryotic sources, phosphorylation decreases the mobility of the αPDH subunit on SDS-PAGE and permits the separation of the phosphorylated and nonphosphorylated αPDH's. Phosphorylation and the inactivation of the Ascaris PDC correspond directly, and the additional phosphorylation that occurs after complete inactivation in mammalian PDC's is not observed. The purified ascarid PDC incorporates 10 nmoles 32P/mg P. Autoradiography of the radiolabeled PDC separated by SDS-PAGE yields a band which corresponds to the phosphorylated αPDH and a second, faint band which is present only during the first three minutes of PDC inactivation, intermediate between the phosphorylated and nonphosphorylated αPDH subunit. Tryptic digests of the 32P-PDC yields one major phosphopeptide, when separated by HPLC, and its amino acid sequence currently is being determined
[en] To determine the prevalence of worm infections and its various types in patients presenting in a tertiary care hospital in Islamabad, Pakistan Methodology: This cross sectional study was conducted in the Department of Medicine, Shifa International Hospital, Islamabad. A total of 255 adults with suspicion of worm infection above 15 years of age were enrolled in a period of 3 months from August 27, 2016 to November 26, 2016. They were investigated through stool R/E separately on three consecutive days. Patients with a history of antihelminthic drugs in the past 2 months were excluded. Results: Out of 255 patients, 103 (40.7%) were between 15-30 years and 114 (44.7%) between 31-50 years of age. 146 (57.3%) patients were female. Most of patients (n=149; 58.4%) belonged to urban area. Bore was drinking source in 120 (47.0%) patients. Overall, 131 (51.3%) patients had positive worm infection with Ascaris as most frequent (n=81;31.7%) followed by Taenia species (n=36;14.1%). Female gender and age between 31 and 50 years was found more prevalent with worm infection. Chashma and well drinking source was found significantly associated with worm infection (p<0.05). Conclusion: The prevalence of worm infection is quite high in Pakistani community, with Ascaris and Taenia spp leading types. (author)
[en] Aim: To evaluate the 3 T MR cholangiopancreatography (MRCP) appearances of biliary ascariasis. Materials and methods: Nine patients with a MRCP diagnosis of biliary ascariasis were reviewed. All patients had endoscopic retrograde cholangiopancreatography (ERCP) or surgical confirmation of the disease. Results: On thin-slab MRCP imaging, Ascaris worms are clearly demarcated within the biliary tree. All the identified worms demonstrated a characteristic three-parallel-lines appearance. The middle high-signal intensity line is sandwiched between two low-signal intensity lines and they are in turn surrounded by high signal bile. On thick-slab MRCP the worms also show the three-line sign but with less clarity. However, thick-slab MRCP has the advantage of providing three-dimensional ERCP-like images of the pancreaticobiliary system. Conclusion: The 'three-line' sign appears to be a characteristic sign of biliary ascariasis on 3 T MRCP.