Wastewater treatment produces solid residuals. Land application provides a sustainable, beneficial alternative for solids disposal, but it increases the threat of public exposure to disease. As such, regulatory agencies in many countries limit the number of pathogens allowable in residuals. One of the most common and resistant pathogens is the egg of the intestinal parasitic worm, Ascaris. Alka...

CONTEXT Ascaris lumbricoides is one of the most common parasitic infestations of human gastrointestinal tract. This parasitic infestation might be asymptomatic and only few studies on extraintestinal ascariasis have been reported. Ascending cholangitis and acute pancreatitis as a result of the Ascaris lumbricoides migrating into the biliary system and pancreatic duct were very rare complication...

The influence of temperature on the development and embryonation of Ascaris suum eggs was studied using coarse sand medium in an environmental chamber with 50% humidity. The time required for development and embryonation of eggs was examined under 3 different temperature conditions, 5°C, 25°C, and 35°C. A. suum eggs did not develop over 1 month at the temperature of 5°C. However, other temperat...

Mitochondrial DNA (mtDNA) has been isolated from 4-cell stages of Ascaris lumbricoides. This DNA amounts to about 40 % of the total quantity of 4-cell-stage DNA. Its buoyant density in neutral CsCl gradients is 1 -686 g cm". Electron microscopy of mtDNA demonstrated the presence of circular molecules with an average contour length of 464 /<m. About 15 % of these molecules are supercoiled, coval...

The standard textbooks of clinical pathology and of laboratory technique describe the typical ova of Ascaris lunibricoides as being easily recognized, but all refer to the difficulty in recognizing certain of the ova. The following observation may explain why it is sometimes so difficult to recognize them. When searching for these ova it is convenient to work with relatively thick faecal emulsi...

Ascariasis is a common worm infestation in developing and under-developed countries. It is caused by the ingestion of food contaminated with Ascaris eggs from faeces and is more common in places with poor sanitation. Almost 25% of the world population is infested by Ascaris lumbricoides. Although ascariasis is a chronic disease, it can present as acute abdomen rarely. The wandering nature of As...

BACKGROUND The parasitic nematodes Ascaris lumbricoides and A. suum are of great public health and economic significance, and the two taxa were proposed to represent a single species. miRNAs are known with functions of gene regulations at post-transcriptional level. RESULTS We herein compared the miRNA profiles of A. lumbricoides and A. suum female adults by Solexa deep sequencing combined wi...

ascaris infestation is still prevalent in the world. in isfahan approximately 77.7 to 90.3 percent of the population is infected. in this communication surgical complications of ascariasis in a series of 29 patients observed in soraya hospital of isfahan during five year period since 1971 are reported. intestinal obstruction was the commonest complication leading to operation (22 cases). the di...

Plantation living conditions in Sri Lanka are often poor. Ascaris lumbricoides infections are common among those living in plantations. We conducted a cross sectional study of children aged 1 6 years living on a plantation to determine the prevalence of ascariasis and factors associated with it in order to educate on prevention and to implement treatment programs. A total of 258 preschool child...