Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| ascariasis mimicking an acute abdomen. | infection with the roundworm ascaris lumbricoides is common in children and may mimic an acute abdomen. the cases of two pediatric patients who presented to the emergency department with signs and symptoms of a surgical abdomen are presented to highlight the presentation of this infection. both cases were diagnosed by physical examination and radiographs and were treated successfully without surgical intervention. these cases illustrate the need for heightened awareness by the emergency physicia ... | 1992 | 1739217 |
| absorption of carbohydrate from rice in ascaris lumbricoides infected burmese village children. | with the objective of determining the relationship between ascariasis and carbohydrate absorption from rice, breath hydrogen tests (bht's) were performed in two study populations of burmese village children. using a rice test meal, breath hydrogen peaks greater than 10 ppm above baseline within 4 hours (indicating rice malabsorption) were seen in 24 out of 55 (44 per cent) ascaris lumbricoides infected children and 3 out of 18 (17 per cent) non-infected children (age 18-59 months). in another as ... | 1992 | 1844093 |
| ascariasis and childhood malnutrition. | 1992 | 1287902 | |
| [the living and health conditions of palestinian children]. | young people constitute 46% of the population in the west bank of israel and 48% in the gaza strip with a rate of growth of 3.1% and 3.4%, respectively. their living conditions are characterized by lack of sanitation, shortage of water (especially in comparison to israel proper), unemployment, curfews and closing of schools during tense periods by the military authorities as collective punishment for incidents. since 1967, israel has controlled and administered the health care service in these ... | 1992 | 1296273 |
| risk of contamination of human and agricultural environment with parasites through reuse of treated municipal wastewater in riyadh, saudi arabia. | two selected sites in the riyadh metropolitan area were surveyed for the presence of human pathogenic parasites in treated municipal wastewater (tmww). a total of 100 samples were collected from both sites at two different seasons, the winter and summer reason. the most common parasites seen were the larvae and adult of strongyloides sp. there were few ascaris lumbricoides ova, some of which were embryonated and possibly infective, while the highest frequency of ascaris ova (100 +/litre) was fou ... | 1992 | 1300348 |
| polyparasitism on the kenya coast. 1. prevalence, and association between parasitic infections. | a partially-stratified sample survey of people living in the catchment area of kilifi general hospital, coast province, kenya, identified 19 species of parasites in blood and intestines. age-prevalence curves of the common infections were of two distinct types, possibly reflecting the host's ability to mount a partially effective immune response. although statistically-significant associations between pairs of infections were clearly demonstrable, these were almost wholly explained by environmen ... | 1992 | 1304710 |
| massive infestation by ascaris lumbricoides of the biliary tract: report of a successfully treated case. | this is a report of a 25 years old black woman from the city of são paulo, brazil, who developed acute obstructive cholangitis of ascaris lumbricoides with septicemia and multiple hepatic abscesses. the patient had sickle cell trait and normal delivery 3 months ago. massive infestation of the biliary tract by ascaris lumbricoides was diagnosed by abdominal ultrasonography and endoscopic retrograde cholangiography. sixty worms were removed from the common bile duct and hepatic abscesses were drai ... | 1992 | 1307412 |
| development of ascaris lumbricoides eggs from females eliminated after chemotherapy in man. | the development of ascaris lumbricoides eggs obtained from females eliminated after treatment of infected individuals with a single oral dose of the antihelminthic drugs thiabendazole (50 mg/kg--33 patients) or levamisole (250 mg--independent of body weight--20 patients) was studied. every female eliminated up to 72 h after treatment were dissected, the uterus isolated and sectioned into small fragments. the eggs were transferred to plastics tubes and incubated at 28 degrees c in 0.1 n h2so4 for ... | 1992 | 1308554 |
| [the use of sodium azide as a fecal preservative for studying the eggs of schistosoma mansoni and of other helminths by the kato-katz method: a study in an endemic area]. | in two aliquots of 208 samples of stool, tests have been made by the kato-katz method, one being made after the use of 0.2mg of sodic azide for 200mg, and the other without the aforesaid conservant. the resulted percentages with or without the conservant were, respectively, for ancylostomideos: 12.5 and 25.9; for ascaris lumbricoides: 71.6 and 72.5; for schistosoma mansoni: 7.6 and 17.7, and for trichuris trichiura: 86 and 85. the count of the eggs with and without the conservant was, respective ... | 1992 | 1308947 |
| [the prevalence of intestinal parasitoses among the users of the health center of sousas district, campinas, são paulo (1986-1990)]. | the prevalence of intestinal parasites was carried on users of the health center of sousas district, campinas, sp (1986-1990). from 770 observed medical records we verify 114 positive cases (14.8%) for protozoa, helminths and commensals. ascaris lumbricoides (48.2%), giardia lamblia (30.7%), trichuris trichiura (18.4%) and enterobius vermicularis (9.6%) were more prevalent in preschool children. the adults, what are the most numerous class, appeared few parasitised. the other parasites and comme ... | 1992 | 1308950 |
| sonographic findings in gallbladder ascariasis. | invasion of the adult roundworm, ascaris lumbricoides, into the gallbladder is rare and was seen in 14(2.1%) of the 665 cases with hepatobiliary ascariasis. the diagnosis was suggested in all 13 cases in which sonography was performed and in 5 of the 11 cases at endoscopic retrograde cholangiography. sonographic findings included a nonshadowing, long, echogenic structure in the form of a coil, an echogenic strip with central anechoic tube, an echogenic structure extending across the gallbladder ... | 1992 | 1331185 |
| intestinal parasites among karitiana indians from rondônia state, brazil. | gravity sedimentation parasitological examinations were performed in stool samples from 111 karitiana indians from rondônia state, brazilian amazon basin. intestinal parasites were found in 43 samples (38.7%). ascaris lumbricoides was the most prevalent helminth species (18.9%). egg counts in samples positive for ascaris suggested an overdispersed distribution of worm burdens in the host population. age-distribution pattern of intestinal parasites among karitiana indians was found to be rather u ... | 1992 | 1342074 |
| sedimentation in parasitological coproscopy. | a sedimentation technique is described, in which a fecal suspension is placed on top of an aqueous sucrose solution of specific gravity 1.015 g/cm3. using 100 by 15 mm test tubes, duplicate gravity sedimentation experiments were made using homogenized fecal suspensions (single-columns) and fecal suspensions placed on top of clear columns (double-columns). egg and cyst counts, and turbidity determinations were made in the sediments obtained after definite time intervals. most ascaris lumbricoides ... | 1992 | 1342080 |
| [anemia in a population from an endemic area of malaria, rondônia (brazil)]. | with the purpose of describing the prevalence rate of anaemia among inhabitants of a malaria endemic area--candeias district, a periurban locality near porto velho, in rondônia state, brazilian amazon basin--a random population sample comprehending 1,068 individuals of all age groups (14.1% of the total population) was screened for anaemia (measurement of blood haemoglobin concentration) and malaria (giemsa-stained thick-smear microscopy). two-hundred and ninety-nine individuals (28.0% of the sa ... | 1992 | 1342496 |
| bronchial challenge of tropical asthmatics with ascaris lumbricoides. | despite the fact that helminthic parasites can stimulate strong immediate hypersensitivity reactions, it is uncertain whether these are relevant to the development of allergic disease in infected patients. in order to examine this possibility, we tested 20 informed chronic asthmatic patients from an ascaris-endemic area by bronchial challenge with a partially purified extract of this parasite. sequential measurements were made of both the forced expiratory volume in the first second (fev1) and t ... | 1992 | 1342890 |
| interrelationship between schistosomiasis and concomitant diseases. | the biological literature contains many examples of mutual influences between different species of parasites, especially with respect to concomitant helminth infections. several situations are known in which the association of infection by schistosoma mansoni with other pathogens in the same host results in a type of disease which differs from the simple summation of the individual effects of each infection. the present study concerns concomitant infections involving s. mansoni and enterobacteri ... | 1992 | 1343911 |
| intensity of reinfection with ascaris lumbricoides and its implications for parasite control. | intestinal helminths are among the most common and widespread of human infections. because it is typical to find that most worms are aggregated in a few potential hosts it has been suggested that some individuals are predisposed to heavy infections and that morbidity could be controlled by the treatment of heavily infected individuals only. we have studied the prevalence and intensity of reinfection with the intestinal nematode ascaris lumbricoides among people living in dhaka, bangladesh. 880 p ... | 1992 | 1349668 |
| oesophageal replacement in paediatric patients. | over a 5-year period from january 1986 to december 1990, 24 children aged between 16 months and 12 years with undilatable oesophageal stricture had oesophageal replacement with isoperistaltic colonic conduit. all the strictures followed accidental corrosive burns. the procedure was well tolerated; all the patients were able to swallow within 3 weeks of surgery. major postoperative complications were threatening pneumothorax (two cases), gastric outlet obstruction due to ascaris lumbricoides (two ... | 1992 | 1377242 |
| a monoclonal antibody-based immunodiagnostic assay for onchocerciasis. | five murine monoclonal antibodies raised against onchocerca volvulus cuticular extracts and termed movs (1-4 and 6) were selected based on reactivity with o. volvulus cryosections, and non-reactivity with cryosections of human skin and/or nodular tissue. two others movs 5 and 7 reacted with both. using the peroxidase-anti- peroxidase (pap) histochemical method, the target epitopes of mov 1 were located in the cuticle's basal and cortical layers, those of mov 2 in the cortical layer; whilst mov 3 ... | 1992 | 1381517 |
| studies in intestinal parasitic disease agents in stools of people in a rural area of nigeria. | a summary of 300 villagers who reported at the parasitology laboratory of the school of medical laboratory technology (s.m.l.t) vom, plateau state, nigeria was carried out for the presence of parasites' cysts, eggs, or larva. of the 300 faecal samples examined using the light microscope after formal-ether centrifugation, 127 (42.3%) harboured one or more parasites. the parasites identified and their prevalent rates were: entamoeba coli (19.0%) necator americanus (17.0%); entamoeba histolytica (4 ... | 1992 | 1390369 |
| ascaris lumbricoides: an unusual cause of shunt infection. | two cases of delayed shunt infection attributable to the abdominal complications of ascaris lumbricoides infestation are reported. the first child presented with a peritoneal shunt catheter protruding through the anus and the second patient was found to have two live worms around the cephalic shunt tubing. both had enteric shunt infections which responded well to therapy. the epidemiology and treatment of ascariasis are briefly discussed. | 1992 | 1394273 |
| hookworm infection among the melka sedi banana plantation residents, middle awash valley, ethiopia. | a study of intestinal parasites was done among the people who lived within the banana plantation zone of the melka sedi agricultural enterprise, awash valley, ethiopia in april 1987. the methods of parasite detection were the ritchie formal ether and the charcoal culture method for hookworm larvae species identification. from the total 633 population, 311 were examined at random of whom 60.8% were positive for one or more intestinal parasites. eight parasites were encountered, ascaris lumbricoid ... | 1992 | 1396614 |
| a possible genetic factor influencing protection from infection with ascaris lumbricoides in nigerian children. | an epidemiological study of ascaris lumbricoides infections was carried out in primary school children aged 5-16 yr from ile-ife, nigeria. intensity of infection was assessed directly by means of counting worms passed during a 48-hr period after chemotherapy. reinfection patterns of a. lumbricoides were assessed at 2 6-mo intervals and statistical evidence of predisposition to infection status was obtained. an investigation of 3 groups of children who were judged to be predisposed not to be infe ... | 1992 | 1403439 |
| [ascariasis of the cervix]. | the authors report a case of ascaris lumbricoïdes located in the cervix uterus of a patient suffering from gonococcal salpingitis. reviewing the literature, they conclude that the most likely way to the parts genitals was a transanal migration toward vagina. | 1992 | 1406217 |
| ascaris lumbricoides and peak expiratory flow rates in children aged 5-15 years. | 1992 | 1406404 | |
| predisposition to reinfection by intestinal helminths after chemotherapy in south thailand. | rates of reinfection by the intestinal helminths hookworm, ascaris lumbricoides and trichuris trichiura after chemotherapy were studied in two villages in phang-nga province, southern thailand. it was found that intensity of infection levels attained after reinfection correlated positively with pretreatment intensities of infection for all parasites. this implies that certain persons in the community are predisposed to receiving high numbers of worms, due either to environmental or personal risk ... | 1992 | 1428513 |
| [a survey of intestinal parasites of the foreign laborers (indonesians and filipinos) in ishikawa prefecture]. | a survey of intestinal parasites was conducted on 198 foreign workers aged 19-27 from inodonesia and philippines. they work for a private company in ishikawa prefecture as technical trainee. on the base of stool examination, 94 (71%) out of 133 indonesians and 48 (74%) of 65 filipinos had intestinal helminths and/or protozoan infections. the prevalence of ascaris lumbricoides, trichuris trichura and hookworm was 4.5, 64.1, 10.6%, respectively. in addition, the positive rate of the cyst of entamo ... | 1992 | 1431385 |
| granulomatous peritonitis by ascaris. | the granulomatous peritonitis by ascaris (gpa) is a rare complication of intestinal ascariasis due to the perforation of the digestive tract by the adult worm, which deposits its ova in free peritoneum; therefore, provoking an intense granulomatous inflammatory reaction. we report a case of an 8-year-old boy with gpa, emphasizing the clinical and diagnostical aspects and the therapeutics procedures. | 1992 | 1432537 |
| comparative prevalences of ascaris lumbricoides, trichuris trichiura and hookworm infections and the prospects for combined control. | programmes to control ascaris lumbricoides, trichuris trichiura and hookworm infections have often been targeted at each infection separately, but the advent of benign and broad-spectrum anthelmintics suggests that combined control may be feasible. the extent to which the infections co-occur in communities will determine the need for, and potential benefits of, such a combined approach. this paper examines the comparative distribution of the three geohelminths in different geographical areas and ... | 1992 | 1437273 |
| the effect of repeated chemotherapy on the prevalence and intensity of ascaris lumbricoides and trichuris trichiura infection. | the prevalence and intensity of intestinal nematode infections were assessed during 3 anthelminthic interventions in an urban community in malaysia. the prevalence levels of ascaris lumbricoides at interventions 1, 2 and 3 were 30.6%, 18.9% and 15.5%, respectively and the mean intensities were 1.9, 0.75 and 0.81 worms per person. for trichuris trichiura, the prevalence levels at interventions 1, 2 and 3 were 46.9%, 21.6% and 15.7%, respectively. the mean intensities for t. trichiura at intervent ... | 1992 | 1439974 |
| cryptosporidiosis among patients with acquired immunodeficiency syndrome in zulia state, venezuela. | we studied the prevalence of cryptosporidium in 29 patients with acquired immunodeficiency syndrome (aids) from zulia state, venezuela. they ranged in age from five months to 46 years. two were children and 27 were adults, of which six were women. of the 21 men, 66.6% reported homosexual behavior. three stool samples from each patient were examined, and modified ziehl-neelsen carbolfuchsin staining of formalinether stool concentrates was used to identify cryptosporidium oocysts. to detect the pr ... | 1992 | 1449198 |
| the prevalence and intensity of soil-transmitted helminthiases in rural communities in southern nigeria. | an investigation of the prevalence and intensity of soil-transmitted helminthiases was undertaken in four villages in oyo state, nigeria. diagnosis was based on examination of stool samples for the presence of helminth ova in all age classes. the prevalence of ascaris lumbriocoides ranged from 61.5-72.2%, of trichuris trichiura from 65-74%, and of hookworm from 52.4-63% depending on the village concerned. intensity, assessed indirectly as the mean eggs per gram of faeces (epg), varied with regar ... | 1992 | 1449276 |
| human helminthosis in a rural community of plateau state, nigeria. | urine and faecal samples were obtained from 1,517 people in fier, a typical rural village in plateau state, nigeria, for a parasitological survey among the population. 643 (42.39%) persons were found to be infected with altogether 9 helminths, namely: ascaris lumbricoides, hookworm, taenia sp., trichuris trichiura, enterobius vermicularis, schistosoma mansoni, s. haematobium, hymenolepis nana and strongyloides stercoralis. age and religion as opposed to sex, type of sewage system, and type of ho ... | 1992 | 1456465 |
| evaluating measures to control intestinal parasitic infections. | intestinal parasitic infections are among the most common infections of humans in developing countries, but the resources available for their control are severely limited. careful evaluation of control measures is essential to ensure that they are cost-effective. the evaluation of the effects of control on intestinal helminths and intestinal protozoa requires an understanding of the different epidemiological patterns of these two groups of parasites. the transmission dynamics and morbidity assoc ... | 1992 | 1462652 |
| prevalence of entamoeba histolytica and other intestinal parasites in a community from maracaibo, venezuela. | the prevalences of entamoeba histolytica and other intestinal parasites were assessed in a suburban community of maracaibo, venezuela, by examination of a stool specimen from each of 342 individuals, using iron-haematoxylin stained faecal smears and formalin-ether concentration. the overall parasitic infection rate was 80.4%, and 65.8% of the population had multiple infections. the overall amoebic infection rate, which was highest in female adults, averaged 39.7%. the e. histolytica infection ra ... | 1992 | 1463357 |
| a survey of the intestinal helminths of refugees in juba, sudan. | a parasitological survey of refugees based in juba, sudan, involving 241 faecal samples, revealed that 66% of the population harboured intestinal helminths. the most commonly found infection was hookworm (36%), followed by schistosoma mansoni (26%), strongyloides stercoralis (20%), hymenolepis nana (11%), ascaris lumbricoides (1.2%), trichuris trichiura (0.8%) and taenia sp. (0.4%). many of the specimens (42%) harboured a single infection, 21% had double, 2% triple and 1% quadruple infections. p ... | 1992 | 1463359 |
| an extremely abundant ovarian mrna from the parasitic nematode ascaris lumbricoides var. suum has multiple repeat motifs. | 1992 | 1474996 | |
| serologic findings in hepatic ascariasis: a case report. | a 56-year-old japanese woman underwent partial hepatectomy for intrahepatic cystic masses. before operation, the patient had been diagnosed as liver abscess due to ascaris infection serologically. the excised hepatic lesions consisted of encapsulated old abscesses, with a few calcified parasitic ova and numerous charcot-leiden's crystals microscopically seen in necrotic exudate. however, no parasitic worms were found in the cystic cavity. the eggs in the tissues were indistinguishable from other ... | 1992 | 1475784 |
| ascaris-induced acute pancreatitis. | the incidence, clinical disease and outcome of acute pancreatitis caused by ascariasis in an endemic area of kashmir, india, was studied prospectively. ascariasis was an aetiological factor in 59 of 256 patients (23.0 per cent) with acute pancreatitis. worms had invaded the bile duct in 51 patients, the pancreatic duct in four and both ducts in four. pancreatitis was mild in 46 patients and severe in 13. associated pyogenic cholangitis was present in eight. acute complications occurred in 11 pat ... | 1992 | 1486433 |
| [the effect of ascaris lumbricoides suis and its trypsin inhibitor on the chick embryo]. | it has been found that tegument homogenate of ascaris lumbricoides suis and also trypsin inhibitor isolated from it induce the leghorn chick embryos mortality when injected into their yolk sac on 4th, 8th or 13th day of incubation. the trypsin inhibitor is one of important components of ascaris homogenate causing mortality. there is linear interrelationship between the logarithm of dose of homogenate or trypsin inhibitor and the mortality of chickens in %. a significant decrease of mean mass of ... | 1992 | 1488839 |
| [pruritus and eosinophilia in a native from equatorial guinea]. | 1992 | 1489797 | |
| chromatin diminution in nematode development. | chromatin diminution in parascaris and ascaris represents the classical case of a developmentally programmed genome rearrangement. the process is very specific with respect to ontogenetic timing and chromosomal localization, and involves chromosomal breakage, new telomere formation and dna degradation. recent evidence from ascaris lumbricoides var. suum suggests that chromatin diminution might have a function in gene regulation. | 1992 | 1492368 |
| hepatic lesions caused by excretory and secretory products of ascaris lumbricoides in golden hamster. | to ascertain the role of excretory and secretory (es) products of ascaris lumbricoides in liver damage. | 1992 | 1506046 |
| [ascaris lumbricoides--a cause of acute abdomen]. | ascaris lumbricoides infestation is the most common helminthic disease in many developing countries and may cause severe surgical complications, especially in children. we present a 3-year-old ethiopian immigrant brought to hospital directly from the airport because of signs of acute abdomen. it was found to be caused by volvulus and necrosis of a loop of bowel impacted with worms. the necrotic bowel loop was resected and a temporary ileostomy was formed; recovery was uneventful. this disease an ... | 1992 | 1516872 |
| influence of intestinal parasitism on lactose absorption in well-nourished african children. | hydrogen breath tests were performed in gabon (central africa) after a loading dose of lactose in 67 well-nourished african children (50 with intestinal parasites and 17 unparasitized) and in 18 unparasitized young adults. all had normal nutritional status, and none had diarrhea or digestive symptoms. parasites that were found included ascaris lumbricoides in 76% of the parasitized children, trichuris trichiura in 58%, giardia in 24%, entamoeba histolytica in 20%, schistosoma intercalatum in 16% ... | 1992 | 1539747 |
| soil contamination with ascaris lumbricoides eggs as an indicator of environmental hygiene in urban areas of north-east brazil. | the objective of this study was to detect the pathways of transmission of ascaris lumbricoides eggs in low-income households of two brazilian cities. an inexpensive flotation technique for egg isolation was applied for the determination of soil contamination in 227 households. the median contamination levels were 0.8 (indoor), 0.3 (backyard) and 0.6 (defaecation site) eggs per gram soil. the contamination levels showed no significant correlation with the presence or quality of latrines or flush ... | 1992 | 1560490 |
| protein chromatographic study on adult ascaris lumbricoides, ascaris vitulorum and toxocara canis. | chromatographic analysis using sephacryl s-300 was done on protein extract of adult ascaris lumbricoides, a. vitulorum and toxocara canis worms. six fractions were separated from both ascaris species and nine from t. canis. fractions revealed a variety of molecular weights in relation to the three species of worms that ranged from 6,000-70,000 daltons. crude extract of t. canis showed cross reaction with both species of ascaris sera using double gel diffusion, while no reaction was obtained usin ... | 1992 | 1578165 |
| surgical manifestations of ascariasis in childhood. | amongst 50 patients with surgical complications of ascaris lumbricoides 35 patients (70%) were treated conservatively and 15 patients (30%) required surgical intervention which included squeezing of worms to distal colon, resection and anastomosis of ileum, appendicectomy and peritoneal lavage. intestinal perforation was observed in 3 cases. two patients (4%) died because of postoperative complications. those presenting with subacute intestinal obstruction had no mortality or morbidity. although ... | 1992 | 1588117 |
| [the prevalence of intestinal parasites in primary school students in trabzon and the importance of education of parasite patients]. | hundred and forty stool samples obtained from fourth classes (10 years of age) of the primary school students were examined for intestinal parasites. in addition, effect of education and variety of education on parasitic diseases were investigated. of the 140 students 65% were found to be positive for intestinal parasites. ascaris lumbricoides 15.7%, trichuris trichiura 22.85%, giardia intestinalis 7.14%, ascaris lumbricoides + trichuris trichiura 15.7%, giardia intestinalis + trichuris trichiur ... | 1992 | 1588851 |
| the effect of repeated chemotherapy on age-related predisposition to ascaris lumbricoides and trichuris trichiura. | this study examines the persistence of predisposition to ascaris lumbricoides and trichuris trichiura during repeated chemotherapy in an urban community in kuala lumpur, malaysia. significant predisposition was observed over 2 periods of reinfection with and without age-standardization of data. analysis of different age groups indicated that predisposition was most strongly detectable in the younger age classes. the intensities of infection with both parasites were strongly correlated at each cy ... | 1992 | 1594301 |
| a new approach to morbidity risk assessment in hookworm endemic communities. | the relationship between paired hookworm prevalence and mean intensity of infection data from geographically defined communities was examined. the results show that, in spite of major socio-economic and environmental differences between communities, the relationship is consistent and non-linear. a generalized value of k (the exponent of the negative binomial distribution) for hookworms was estimated to be 0.34, which is consonant with previous estimates from cross-sectional data. maximum likelih ... | 1992 | 1601081 |
| [liver abscesses due to ascaris lumbricoides]. | 1992 | 1602887 | |
| immunoepidemiology of ascaris lumbricoides: relationships between antibody specificities, exposure and infection in a human community. | the serum antibody responses of 124 people naturally exposed to ascaris lumbricoides infection were analysed by immunoprecipitation of radio-isotope labelled 3rd- and 4th-stage larval ascaris suum excretory and secretory antigens (l3/4 es). profiles of antigens recognized were visualized by polyacrylamide gel electrophoresis (sds-page), and the band intensities of the 12 major precipitated antigens were individually scored. most subjects were seropositive, but considerable variation was observed ... | 1992 | 1614731 |
| the gmp reductase gene of the nematode ascaris lumbricoides var. suum. | 1992 | 1620164 | |
| the two main rdna size classes of ascaris lumbricoides: comparison of transcription termination and spacer organization. | structural and functional analyses were carried out to compare transcription termination and intergenic spacer organization between the two heterogeneous ribosomal dna size classes of ascaris lumbricoides. by performing mung bean nuclease mapping in vivo, we localized the 3' end of the mature 26s rrna to the same position in both forms. this site coincides with the in vivo and in vitro transcription termination site of the 40s-precursor rrna from both rdna size classes. we demonstrate that the 3 ... | 1992 | 1620592 |
| abdominal complications of ascaris lumbricoides in children. | 1992 | 1630003 | |
| [hepatobiliary ascaridiasis in childhood: echographic diagnosis]. | ascaris lumbricoides infestation in the liver and biliary tract causes various clinical manifestations due to the migration of larvae and adult organisms. parasites in the bile ducts cause obstruction and such complications as cholecystitis, cholangitis and liver abscesses. we report the us findings of biliary ascaridiasis as observed in a series of 13 children over a 3-year period. the patients (6 females and 7 males) presented hepatosplenomegaly, abdominal distension, right subcostal pain; 3 o ... | 1992 | 1631339 |
| the pattern of human intestinal helminth infections in farming communities in different parts of ondo state, nigeria. | faecal samples collected from people inhabiting project areas of owena river basin and rural development authority at okitipupa, akure ifon and ajowa which are located in different geographical areas of ondo state, nigeria, were examined for helminth ova and larvae. the common worms were ascaris lumbricoides, trichuris trichiura and hookworms with average occurrences of 43.1% 23.4% and 17.0% respectively. infections were highest in subjects in the age groups of 6-10 and 11-15 years and lowest in ... | 1992 | 1637737 |
| ascaris suum: are trypsin inhibitors involved in species specificity of ascarid nematodes? | inhibitors of porcine trypsin were prepared from aqueous extracts of the parasitic nematodes ascaris suum (hogs) and ascaris lumbricoides (human). in this study three experiments were performed. (1) polyclonal antibodies were prepared against one isoform of trypsin inhibitor from each parasitic nematode. each antibody reacted with all isoforms from itself as well as all isoforms from the other parasite. (2) association equilibrium constants were measured by titrating host trypsins (porcine or hu ... | 1992 | 1639157 |
| moderate to heavy infections of trichuris trichiura affect cognitive function in jamaican school children. | a double-blind placebo trial was conducted to determine the effect of moderate to high loads of trichuris trichiura (whipworm) infection on the cognitive functions of 159 school children (age 9-12 years) in jamaica. infected children were randomly assigned to treatment or placebo groups. a third group of randomly selected uninfected children were assigned to a control for comparative purposes. the improvement in cognitive function was evaluated using a stepwise multiple linear regression, design ... | 1992 | 1641252 |
| morphology of the uterus of ascaris lumbricoides in the region where fertilization and formation of egg-shell occur. | morphology of the female reproductive system of ascaris lumbricoides l. was studied in the region starting with the junction between the oviduct and the uterus (o-u) up to the junction of both uterine branches into the vagina with regard to the process of fertilization and formation of egg-shells. in the o-u junction morphology differed in two following sections: a continuous simple squamous up to simple cuboidal epithelium, and simple cuboidal up to columnar epithelium with broad intercellular ... | 1992 | 1644348 |
| on the mechanism of penetration of ovicidal fungi through egg-shells of parasitic nematodes. decomposition of chitinous and ascaroside layers. | the decomposition of egg-shells of ascaris lumbricoides l. was studied microscopically using topochemical methods in a set of 32 strains of soil ovicidal fungi. it was found that even fungi displaying minimal chitinolytic activity in tests on purified chitin in vitro are able to dissolve chitin of egg-shells during the attack on live eggs. fungi without any chitinolytic activity penetrate probably only the mechanically damaged eggs. none of the studied fungi was capable of degrading enzymaticall ... | 1992 | 1644351 |
| prevalence of intestinal parasites among food handlers in al-medinah. | fecal specimens from 13.216 food handlers (male) adults, representing 21 different nationalities, were analyzed for the presence of intestinal parasites at king abdul azeez hospital, al-medinah. approximately 14% of these individuals harbored potentially pathogenic parasites, the most common organism being giardia lamblia (33%), followed by entamoeba histolytica (23%), trichuris trichiura (12.3%), ascaris lumbricoides (11.8%) and others. the highest incidence of parasite load was found in sri la ... | 1992 | 17589131 |
| prevalence of pathogenic intestinal parasites among preschool children in al-medina district, saudi arabia. | the prevalence of pathogenic intestinal parasites among preschool children in al-medina district, saudi arabia, was determined through a randomized multistage sampling of 8000 preschool children. duplicate specimens from each child were examined using a simple sedimentation technique. the overall prevalence of intestinal parasites among children screened was 18.4%. the most common parasite isolated was giardia lamblia (14.5%). this was followed by entamoeba histolytica (2.7%), enterobius vermicu ... | 1993 | 17590673 |
| prevalence of intestinal parasites among expatriated workers in al-ain, united arab emirates. | a retrospective study was conducted among expatriate workers in al-ain city, united arab emirates (uae), to determine the prevalence of pathogenic parasitic infestation. the study was based largely on expatriates arriving from india, pakistan, bangladesh, iran, philippines, sri lanka, and other arab countries and mainly employed as food handlers, housemaids, baby sitters, and private drivers. this group represents 45.7% of the total number of new arrivals of expatriates during the period between ... | 1993 | 17588015 |
| [cryptosporidiosis among intestinal parasitosis in senegalese pediatric hospital patients]. | from november 1991 to march 1992 authors have carried out a study on the place of cryptosporidiosis among the intestinal diseases in children from a dakar pediatric hospital. different technics have been used to identify the parasites in the stool: direct examination, followed by ritchie and zielh nielsen modified by henricksen and poblenz. the results show that 32% of the children were carriers parasites. helminths represent 53.2% of the parasites with predominance of ascaris lumbricoides. giar ... | 1993 | 7758369 |
| patent vitello-intestinal duct: an unusual presentation. | the case history of a child passing a roundworm through the umbilicus is presented. the diagnosis and management of a patent vitello-intestinal duct is discussed. | 1993 | 7828238 |
| [difficulties in the diagnosis of prolonged pulmonary eosinophilic infiltration in a child]. | the paper deals with a 6-year-old child admitted to hospital for prolonged febrile syndrome, hemoptic sputum with radiological persistence of some pulmonary opacities which raised many hypotheses concerning the etiological diagnosis. a prolonged eosinophilic pulmonary infiltrate due to an infestation with ascaris lumbricoides and giardia was the matter in the study case. the specific anti-parasitic treatment has a decisive role in the clinical radiological improvement in case of a parasitic eosi ... | 1993 | 7950452 |
| [the health problems associated with irrigation with wastewater in mexico]. | over 85,000 hectares in the mezquital valley of central mexico are irrigated with wastewater. the main crops are fodder and cereal crops. a two cross-sectional survey was carried out to test the impact of exposure to raw wastewater and from storage of that wastewater in reservoirs. the main outcomes were diarrhoeal disease and parasitic infections in farmworkers and their families. the total study population in the dry season included 2,049 households. the study population was classified in hous ... | 1993 | 8128300 |
| [acute ileitis due to ascaris lumbricoides]. | the authors report their experience of two cases of acute ileitis with an obstructive complication due to "ascaris lumbricoides". the distinctive features were, in the first case, the pathogenic mechanism responsible of the occlusion, and in the second one, the need of a long term follow-up. the latter, especially in the "aspecific forms", often allows an etiological diagnosis difficult even at laparotomy. indicating the most frequent causes of surgical complications found in ileitis, which is a ... | 1993 | 8136235 |
| intestinal helminthiases in ecuador: the relationship between prevalence, genetic, and socioeconomic factors. | prevalence of infection with the intestinal helminths, ascaris lumbricoides, trichuris trichiura, ancylostoma duodenale and strongyloides stercoralis was examined in 632 residents of communities in esmeraldas province of ecuador. these communities were divided into two groups according to area of habitation which reflected different socioeconomic circumstances. attempts were made to correlate infection status with race and abo blood group phenotype. the racial groups included blacks, chachi amer ... | 1993 | 8146392 |
| [eosinophilia in pediatrics. report of clinical cases]. | we present four clinical cases where eosinophilia was a prominent sign. final diagnoses were toxocariasis, ascaris lumbricoides infection, acute lymphocytic leukaemia and histiocytosis of langerhans cells. | 1993 | 7809451 |
| [intestinal parasite infections in rural students of chiloé archipelago, x region, chile]. | in order to contribute to the knowledge of intestinal parasite infection a survey was performed in 462 primary school children from eight rural localities sited in two islands of the chiloe archipelago. stool samples and perianal scotch tape scrapings for intestinal protozoa and helminths were microscopically examined. the prevalence rates of the main species found were: ascaris lumbricoides 43.3%, trichuris trichiura 26.8%, enterobius vernicularis 20.1%, entamoeba histolytica 5.6%, giardia inte ... | 1993 | 8110371 |
| ascariasis and childhood malnutrition. | the present review will examine epidemiological perspectives and be confined mainly to the results of those field studies published since 1975 in order to provide concrete scientific evidence of the effect of ascariasis on childhood malnutrition, particularly on growth. the field studies were done in many developing countries from africa, asia and latin america, using cross-sectional and intervention studies in which anthelmintics were employed, with different dosing frequency and follow-up peri ... | 1993 | 8115177 |
| [teratogenic action of alpha-chymotrypsin inhibitor of ascaris lumbricoides in mice]. | during investigations of biological activity of proteolysis inhibitors from ascaris lumbricoides, teratogenic action of alfa-chymotrypsin inhibitor (ich) was evaluated. the inhibitor was obtained by a method of roli and pudles and was applied parenterally at 8-12 day of pregnancy to balb/c mice in doses of 20-80 mg/kg of mice per 24 hours. control groups received respectively 1 cm3 of 0.9% nacl or 80 mg of bovine albumin. normal status of development of internal organs in 19-days old fetuses was ... | 1993 | 8189818 |
| a survey of intestinal helminths among students of post-primary institution in adamawa state, nigeria. | a survey was carried out to determine the prevalence of intestinal helminthiasis among students of government secondary school girei, song local government area of adamawa state, nigeria, between january and july 1991. of the 200 students between ages ten to thirty-two years old examined, 86 (43.0%) were infected using the formyl ether concentration method. the most commonly found worm were hookworms, ascaris lumbricoides and trichuris trichiura with mean egg per gram of 4,800; 2,600; and 1,250 ... | 1993 | 8220572 |
| serial cholangiographic appearances in recurrent pyogenic cholangitis. | from december 1982 to december 1991, cholangiograms were obtained in 227 patients with recurrent pyogenic cholangitis. cholangiographic abnormalities included biliary dilation, calculi, sludge, excessive branching, and arrowhead formation of intrahepatic ducts and biliary strictures. in 21 patients, previous evidence of biliary ascariasis was seen. repeat cholangiograms were performed in 55 patients in a follow-up period of 18.0 +/- 1 months. of these patients, 12 treated conservatively continue ... | 1993 | 8224691 |
| worm extraction and biliary drainage in hepatobiliary and pancreatic ascariasis. | from december 1989 to march 1992, 50 (32%) of 156 patients with hepatobiliary and pancreatic ascariasis underwent various endoscopic interventional procedures. endoscopic intervention was performed when patients did not respond to energetic symptomatic treatment within the first few days of hospitalization (n = 45) or when worms had not moved out of the ducts into the duodenum at 3 weeks (n = 5). worm extraction was successful in all 18 patients from the ampullary orifice and in 34 (89.5%) of 38 ... | 1993 | 8224692 |
| [inhibitory effect of bithionol on nadh-fumarate reductase in ascarides]. | to elucidate the mechanism of anthelmintic action of bithionol, the inhibitory effect of the drug on nadh-fumarate reductase (nadh-fr) of ascaris lumbricoides suum was examined. nadh-fr, an enzyme of anaerobic carbohydrate metabolic pathway was solubilized from the mitochondria of the worm's muscle with deoxycholate, and then partially purified with the monoethanolamine-sepharose 4b column chromatography. rhodoquinone (rq), which is required for the electron transfer from nadh to fumarate, was s ... | 1993 | 8229665 |
| the accumulation, distribution and viability of human parasitic nematode eggs in the sludge of a primary facultative waste stabilization pond. | investigations into the enumeration, distribution and viability of nematode eggs in the sludge from a primary facultative waste stabilization pond showed that pond sludges are not nematologically safe for immediate land application. up to 12% of ascaris lumbricoides eggs were viable after the pond had been in operation for 2.5 years. eggs were recovered from the sludge along the full length of the pond, although there were significant decreases in egg concentration and viability with increasing ... | 1993 | 8236383 |
| ultrasonographic diagnosis of hepatobiliary ascariasis. | eight cases of hepatobiliary invasion of ascaris lumbricoides into the hepatobiliary tract are presented. in the presence of nonspecific symptoms and biochemical test results, the diagnosis was made in seven patients by sonography. in the remaining patient, in whom the adult roundworm was not visible on sonography owing to the presence of aerobilia, the diagnosis was made at ercp. sonography revealed typical tubular, echogenic, filling defects along the long axis of a dilated common bile duct, s ... | 1993 | 8246335 |
| the distribution of intestinal helminth infections in a rural village in guatemala. | fecal egg count scores were used to investigate the distribution and abundance of intestinal helminths in the population of a rural village. prevalences of the major helminths were 41% with ascaris lumbricoides, 60% with trichuris trichiura and 50% with necator americanus. all three parasites showed a highly aggregated distribution among hosts. age/prevalence and age/intensity profiles were typical for both a. lumbricoides and t. trichiura with the highest worm burdens in the 5-10 year old child ... | 1993 | 8246757 |
| ascaris lumbricoides resulting in acute cholecystitis and pancreatitis in the midwest. | 1993 | 8249989 | |
| schistosomiasis and intestinal parasites in rural villages in southwest nigeria: an indication for expanded programme on drug distribution and integrated control programme in nigeria. | a cross sectional survey of schistosomiasis, intestinal parasite infections and pattern of schistosomiasis transmission was undertaken in four rural villages around the erinle dam, nigeria. the prevalence of schistosoma haematobium ranged from 10% to 60%. 30% of infected school children excreted over 50 eggs/10 ml urine and high rates of haematuria, proteinuria, leucocyturia and nitrites in urine were observed in infected children and the villagers. prevalence of infection with s. mansoni ranged ... | 1993 | 8256092 |
| laparoscopic cholecystectomy for gallbladder ascariasis. | a case is presented of persistent gallbladder infestation by ascaris lumbricoides that was successfully treated by laparoscopic cholecystectomy. the management of this rare manifestation of ascariasis is reviewed. | 1993 | 8258078 |
| theory of the locomotion of nematodes: control of the somatic motor neurons by interneurons. | the only animal of which the complete neural circuitry is known at the submicroscopical level is the nematode caenorhabditis elegans. this anatomical knowledge is complemented by functional insight from electrophysiological experiments in the related nematode ascaris lumbricoides, which show that ascaris motor neurons transmit signals electrotonically and not with unattenuated spikes. we developed a mathematical model for electrotonic neural networks and applied it to the motor nervous system of ... | 1993 | 8260760 |
| histological changes in hamster liver by es antigen of ascaris suum. | polyacrylamide gel electrophoresis with sds (page-sds) of the es antigens of a. suum revealed several protein molecules which differed from those obtained in es antigens of a. lumbricoides. nature of liver damage caused by es antigens of a. suum was studied in hamsters to find out the nature of damage and to compare with those caused by es antigens of a. lumbricoides. feeding of es antigens of a. suum was carried out in 7 hamsters for 75 days. after such feeding gross hepatic damage was noticed. ... | 1993 | 8262573 |
| intestinal parasitic infections in campalagian district, south sulawesi, indonesia. | intestinal parasitic infections were surveyed in the inhabitants of 3 coastal and 2 inland villages of campalagian district, south sulawesi, indonesia, in july 1992. a total of 398 fecal samples were examined by using kato-katz thick smear, harada-mori culture and agar-plate culture techniques. protozoan cysts were examined by formalin ether concentration technique on 380 fecal samples. soil-transmitted helminth infections were highly prevalent with the overall positive rates as follows: ascaris ... | 1993 | 8266235 |
| a population dynamic approach to the cost-effectiveness analysis of mass anthelmintic treatment: effects of treatment frequency on ascaris infection. | this study examines the cost-effectiveness of different frequencies of mass chemotherapy in reducing helminth infection and morbidity at the community level. the cost-effectiveness framework utilities a dynamic model of helminth transmission which permits the effectiveness of treatment to be expressed as some long-term reduction in infection and disease. cost analysis is incorporated into this framework using an itemized cost menu and cost data from an actual control programme. the cost-effectiv ... | 1993 | 8266414 |
| comparable seropositivity for ascariasis and toxocariasis in tropical slum children. | the seropositivities for infection by ascaris lumbricoides and toxocara canis were determined in children (1-15 years old) of a slum area of caracas, venezuela, and the levels that indicate the presence of active infection were defined. in children aged from 1 to 3 years, approximately 10% were positive for either parasite, and this figure increased to about 30% in 4- to 6-year-olds. for toxocariasis, the percentage of positivity remained at this level up to the age of 15 years. whilst the posit ... | 1993 | 8278336 |
| [parasitological research conducted between 1982 and 1991 in a sample of zinvie (benin) residents]. | the authors point out the frequency of intestinal parasitism in zinvie (benin). out of 18,512 samples, 9,554 (51.60%) were found positive. the main parasites found were: ankylostoma duodenale, ascaris lumbricoides, amoeba, giardia lamblia. the authors underline the polyparaitism 16.75%. | 1993 | 8289626 |
| intestinal parasite infections in the inhabitants along the hantan river, chorwon-gun. | the prevalence of intestinal parasite infections in inhabitants at the reaches of the hantan river, chorwon-gun, korea, was observed from august 12 to september 14, 1993. of 465 people observed by cellophane thick smear and formalin-ether concentration method, 2 ascaris lumbricoides (unfertilized), 1 trichuris trichiura, 39 clonorchis sinensis and 16 metagonimus egg positive cases were found. after treatment, the metagonimus egg positive cases passed out flukes of metagonimus miyata type. of 68 ... | 1993 | 8297896 |
| ascariasis and the urinary bladder. | 1993 | 8306178 | |
| vitamin a absorption in children with ascariasis. | the effect of ascaris lumbricoides infection on retinol absorption was investigated in young children from a slum area of dhaka city, bangladesh. twenty-four children aged 4-10 years were screened and in every case eggs of either ascaris, trichuris or hookworm were isolated from the stool. the average serum retinol was 0.91 (sd 0.35) mumol/l and sixteen children had levels below 1.05 mumol/l. this compared with a serum retinol concentration of 1.70 (sd 0.52) mumol/l in five reference children fr ... | 1993 | 8329356 |
| the ecology of animal parasitic nematodes in endemic areas of jos, nigeria. | a survey involving 3418 faecal samples collected from three areas of heavy human and animal activities in jos, nigeria showed that 2354 (68.9%) of the samples harboured various parasitic nematodes of man and animals. altogether, twelve species of parasitic nematodes were encountered. five of these, namely: ascaris lumbricoides, ancylostoma duodenale, necator americanus, trichuris trichiura and strongyloides stercoralis infect man while five others: trichostrongylus probolurus, t. colubriformis, ... | 1993 | 8334456 |
| immunodiagnosis of strongyloides stercoralis infection: a method for increasing the specificity of the indirect elisa. | indirect enzyme-linked immunosorbent assay (elisa) allows sensitive detection of serum immunoglobulin (ig) g against a soluble extract of strongyloides stercoralis infective larvae. in this study, 40/40 (100%) human strongyloidiasis sera had high levels of anti-s. stercoralis igg, but 30/40 (75%) filariasis sera, and 12/40 (30%) necatoriasis sera also had higher levels than control sera from uk residents. in attempts to increase the assay specificity by absorption of cross-reactive igg, the effe ... | 1993 | 8337720 |
| endoscopic removal of ascaris from biliary tree. | hepatobiliary ascariasis is an uncommon condition outside the kashmir valley. we report here a patient with this disease from the eastern part of india. | 1993 | 8340144 |
| detection of density-dependent growth and fecundity of helminths in natural infections. | density-dependent constraints on parasite growth, survival or reproduction are thought to be important in preventing the unchecked increase in parasite numbers within individual hosts or host populations. while it is important to know where, and with what severity, density dependence is acting within the parasite life-cycle, interpretation of data from natural infections is difficult. in this paper, we present a monte carlo simulation technique for examining such data for evidence of density dep ... | 1993 | 8341589 |
| endoscopic diagnosis and removal of ascaris lumbricoides from the stomach. | 1993 | 8348898 | |
| ultrasound in the diagnosis of roundworms in gallbladder and common bile duct. report of four cases. | four patients who complained of symptoms and signs compatible with biliary tract disease and in whom the diagnosis of gallbladder (three cases) and common bile duct ascariasis (one case) was made sonographically are reported. in two patients with gallbladder ascariasis, cholecystectomy corroborated the presence of the round-worms, and was curative. the third patient was a pregnant woman (32nd gestational week) who took piperazine citrate, and a second sonogram performed 29 days later was complet ... | 1993 | 8351609 |