| [parasitologic diagnosis. ascaris lumbricoides]. | | 2000 | 10925640 |
| [maternal and child intestinal parasitism and breast-feeding]. | from march to may 1991, the prevalence of intestinal parasites was detected in 208 children under two-year old, from out patients attending the public health service in rio de janeiro. maternal parasitic infection was simultaneously investigated. information regarding nurseling's breast-feeding and enteroparasites rates was also recorded. the centrifugal-sedimentation was the method used for stool analysis. positivity was observed in 12.7% for children and 37.3% for women. ascaris lumbricoides w ... | 2000 | 10936951 |
| urban/rural differences in prevalence and risk factors for intestinal helminth infection in southern malawi. | urbanization may increase the risk of human infection with intestinal helminths. a cross-sectional survey was conducted to investigate the prevalence, intensity and potential risk factors of acquiring such infection, among children aged 3-14 years in similar urban and rural communities in southern malawi. stool samples were collected from 553 children (273 urban and 280 rural). the overall prevalence of helminth infection was significantly higher in the urban subjects than in the rural (16.5% v. ... | 2000 | 10945048 |
| liver pseudotumor: a rare manifestation of hepatic granulomata caused by ascaris lumbricoides ova. | a rare case of hepatic granulomata caused by ascaris lumbricoides ova is reported. the patient presented clinically with hepatic mass simulating malignancy, and final diagnosis was performed after surgery, which provided enough material for histopathological examination. | 2000 | 10950065 |
| intestinal helminth infections amongst school children in the serian district of sarawak. | school children from 3 primary and 2 secondary schools in sarawak were examined for the presence of gastrointestinal helminths. one primary school and 1 secondary school were located in a town (serian), the other primary and secondary schools were in the countryside outside serian. the intestinal helminths detected were ascaris lumbricoides, trichuris trichiura, enterobius vermicularis and hookworm. children from the rural schools had higher numbers of eggs in their faeces than those from the se ... | 1999 | 10972011 |
| albendazole treatment of children with ascariasis enhances the vibriocidal antibody response to the live attenuated oral cholera vaccine cvd 103-hgr. | because concurrent infections with geohelminth parasites might impair the immune response to oral vaccines, we studied the vibriocidal antibody response to the oral cholera vaccine cvd 103-hgr in children infected with ascaris lumbricoides and investigated the effect of albendazole pretreatment on the postvaccination response. children with ascariasis were randomized to receive either 2 sequential doses of 400 mg of albendazole or placebo. after the second dose, cvd 103-hgr was given, and serum ... | 2000 | 10979918 |
| human infection with ascaris lumbricoides is associated with a polarized cytokine response. | to define the cytokine response to ascaris lumbricoides infection, the cellular immune response to adult and larval-stage ascaris antigens in young adults with moderate infection intensities (n=73) was compared with that of a group of uninfected control subjects (n=40). a. lumbricoides-infected subjects had significantly greater lymphoproliferative responses to adult and larval-stage antigens, compared with uninfected control subjects (p<.01). the frequencies of parasite antigen-stimulated perip ... | 2000 | 10979919 |
| a small-scale survey of intestinal parasite infections among children and adolescents in legaspi city, the philippines. | to determine the status of infection caused by intestinal parasites among children and adolescents living in legaspi city, the philippines, we performed a small survey by fecal examination for helminth ova and protozoan cysts with formalin-ether concentration method. of the 64 examinees, the infection rate was 78.1%. the infection rates of primary school children, preschool children and adolescents were 95.5%, 64.7% and 87.5%, respectively. the infection rate in urban areas was 56%, and 92.3% in ... | 2000 | 11002656 |
| relationships among some ascaridoid nematodes based on ribosomal dna sequence data. | the nuclear ribosomal dna (rdna) region spanning the first (its-1) and second (its-2) internal transcribed spacers was sequenced for 15 taxa of ascaridoid nematodes. the length of the its-1 and its-2 sequences in the 15 taxa ranged from 392-500 bp and 240 348 bp, respectively. while nucleotide variation of 0-2.9% in the its-1 and/or its-2 sequences was detected within taxa where multiple samples were sequenced, significantly higher level of nucleotide difference (9.4-66.6%) was detected between ... | 2000 | 11002982 |
| ascaris and ascariasis. | in recent years much new information has been obtained about the epidemiology, population biology and public health significance of infections of ascaris lumbricoides in humans. results from experimental infections of a. suum in pigs have helped to elucidate the observations made in the community on human ascariasis. the main purpose of the review is to see how new information may contribute to further acceptance of ascariasis as a serious contributor to ill-health and so to the design and imple ... | 2001 | 11013758 |
| preliminary studies on antigenic mimicry of ascaris lumbricoides. | | 2000 | 11058942 |
| [assessment of schistosomiasis and other intestinal parasitoses in school children of the bambuí municipality, minas gerais, brazil]. | this work was carried out with the purpose of determining the prevalence of intestinal parasitoses in the school children of bambuí, through parasitological examinations (direct and kato-katz methods) and reevaluating the snails' breeding places described in the county. of the 2,091 school children examined, 20.1% had at least one parasitic infection. giardia lamblia, entamoeba coli, ascaris lumbricoides and hookworm are the most frequent parasites, with a prevalence of 6.2%, 6.2%, 4.8% and 1.4% ... | 2000 | 11064579 |
| lower hookworm incidence, prevalence, and intensity of infection in children with a bacillus calmette-guérin vaccination scar. | bacillus calmette-guérin (bcg), the most common vaccine worldwide, has broad effects on the immune system. hookworm infections are a major source of morbidity. in response to a preliminary report of bcg vaccination protection against nematodes in human immunodeficiency virus-infected adults, data from an ongoing prospective study were analyzed to determine the intensity (eggs per gram of stool), prevalence, and incidence of different helminths in children with and without a bcg vaccination scar. ... | 2000 | 11069259 |
| the prevalence and intensity of soil-transmitted helminthiasis among pre-school children in orang asli resettlement villages in kelantan. | a study of the prevalence and intensity of soil-transmitted helminthiasis among pre-school children aged 0 to 7 years from an orang asli village resettlement scheme in gua musang, kelantan was undertaken. the overall prevalence of soil transmitted helminthic (sth) infections was 56.0%. the predominant helminth found was ascaris lumbricoides while the commonest type of infection was a mixed infection with ascaris lumbricoides and trichuris trichiura. the prevalence rates of ascaris, trichuris and ... | 1999 | 11072462 |
| successful eradication of ascaris lumbricoides and hookworm infection after three repeated doses of albendazole. | three repeated orally doses of albendazole 400 mg in 6 weekly intervals were evaluated in thai hill-tribe students who had at least one kind of soil-transmitted helminths (i.e. ascaris lumbricoides, hookworm and trichuris trichiura). stool examination and parasite egg count were performed using beaver's standard direct smear method and kato-katz's cellophane thick smear method prior to treatment and then 1 month after the first, second and third dose of drug administrations. a single dose of alb ... | 2000 | 11075978 |
| capillaria hepatica: a spurious case with a brief review. | a 12-year-old bunun aboriginal school student in sanmin district kaohsiung county, southern taiwan, was found to have capillaria hepatica eggs in the feces during a survey on intestinal parasitic infection in 1997. moreover, this student was also infected with trichuris trichiura and ascaris lumbricoides. the c. hepatica eggs were light yellowish-brown in color, 54 (40-60) microns in length and 29 (25-35) microns in width with a 3 (3-4) microns thick shell and two colorless egg plugs 7 (5-9) x 6 ... | 2000 | 11079295 |
| case description of ascariasis. | ascaris lumbricoides are among the medically important worms belonging to the phylum nematoda (roundworms) that are parasites of the human gastrointestinal tract. despite current sanitation and hygiene standards in the united states, infection due to intestinal roundworms is not uncommon in children and adults. a high index of suspicion is warranted as patients may present anywhere along a spectrum of illness from asymptomatic to acutely ill. the following is a case presentation and discussion o ... | 2000 | 11115229 |
| geographical variation in ascaris lumbricoides fecundity and its implications for helminth control. | the observation by microscopy of nematode eggs in human faeces is used to diagnose a helminthic infection, while the concentration of those eggs is used to estimate the number of worms in the host. within a community, the prevalence of infection and the mean egg count provide useful information about the extent of a public health problem, and are being used to guide the growing efforts to control disease caused by helminths. here, andrew hall and celia holland examine data on the relationship be ... | 2000 | 11121853 |
| anthelmintic treatment of rural bangladeshi children: effect on host physiology, growth, and biochemical status. | the effect of helminth infestation on the nutrition, growth, and physiology of the host is still poorly understood. anthelmintic treatment of children in developing countries has had varying success in terms of growth improvements. | 2001 | 11124750 |
| the prevalence of malnutrition and geo-helminth infections among primary schoolchildren in rural kelantan. | a cross-sectional study of the nutritional status of schoolchildren aged 7-10 years from the kuala betis resettlement scheme in gua musang, kelantan was done. a total of 291 schoolchildren were examined but only 183 (62.9%) fecal samples were returned for geo-helminth infection analysis. the prevalence of stunting was 40.4% and underweight was 28.4%. a total of 127 schoolchildren (69.4%) were positive for at least one of the 3 geo-helminth infections. the most common geo-helminth was ascaris lum ... | 2000 | 11127336 |
| strongyloides stercoralis infection and chronological changes of other soil-transmitted helminthiases in an endemic area of southern thailand. | a field survey was conducted in 4 primary schools in nakhon si thammarat province, southern thailand. by sasa modified harada-mori cultivation method, 1.8% of the schoolchildren were found to be infected with strongyloides stercoralis, and 25.1% had hookworm infection. by kato's thick smear method, the overall prevalence of soil-transmitted helminths was 46.8%, being trichuris trichiura 28.5%, hookworm 18.0%, and ascaris lumbricoides 5.7%. fecal examination, performed by kato's thick smear and c ... | 2000 | 11127343 |
| contamination of soil with helminth parasite eggs in nepal. | contamination of soil with helminth eggs in kathmandu valley (n=122) and outside of valley (n=34) in nepal was investigated with the use of centrifugal floatation technique using sucrose solution (sp gr 1.200). the overall soil contamination rate was 36.5% (57/156). the prevalence was uniform in kathmandu valley (36.9%) and outside of the valley (35.3%). a mean of six helminth eggs per sample were detected out of which more than half were embryonated (potentially infective). in kathmandu valley, ... | 2000 | 11127345 |
| socioeconomic status, clinical features, laboratory and parasitological findings of hepatic amebiasis patients--a hospital based prospective study in bangladesh. | socioeconomic status, clinical, laboratory and parasitological features of 31 hospitalized amebic liver abscess (ala) and 8 amebic hepatitis (ah) patients were studied. thirty-seven (94.9%) of the total 39 cases were from low socioeconomic class and 2 (5.1%) were from middle class (p<0.001). sixteen (51.6%) ala and 5 (62.5%) ah patients were admitted with duration of disease for 3 weeks or more. twenty-one (67.7%) ala and 3 (37.5%) ah cases gave no previous history of diarrhea or dysentery. epig ... | 2000 | 11127347 |
| the impact of iron supplementation on reinfection with intestinal helminths and schistosoma mansoni in western kenya. | a randomized, placebo-controlled, double-blind trial was carried out in 1994-96 among 231 children and 181 adults in order to determine the effects of iron on reinfection rates and intensities of hookworm, ascaris lumbricoides, trichuris trichiura and schistosoma mansoni. adults given 60 mg elemental iron twice-weekly for 12 months had significantly lower reinfection rates of a. lumbricoides (16.7% vs 31.9%, p = 0.046), t. trichiura (6.9% vs 20.6%, p = 0.03) and s. mansoni (38.3% vs 61.8%, p = 0 ... | 2000 | 11132373 |
| the epidemiology of schistosomiasis mansoni and soil-transmitted helminths in elementary school children from the south gondar zone of the amhara national regional state, ethiopia. | in a cross-sectional survey undertaken in 22 communities of 6 districts in the south gondar zone of the amhara national regional state, 2279 school children had their stools examined for schistosomiasis mansoni and soil-transmitted helminths using the kato-katz technique. overall the prevalence rates were 16.4%, 28.9%, 9.5% and 12.9% for s. mansoni, a. lumbricoides, t. trichiura and the hookworms, respectively. s. mansoni infection was registered from 14 of the 22 communities, in more than 60% o ... | 2000 | 11144882 |
| jule from the fish xiphophorus is the first complete vertebrate ty3/gypsy retrotransposon from the mag family. | jule is the second complete long-terminal-repeat (ltr) ty3/gypsy retrotransposon identified to date in vertebrates. jule, first isolated from the poeciliid fish xiphophorus maculatus, is 4.8 kb in length, is flanked by two 202-bp ltrs, and encodes gag (structural core protein) and pol (protease, reverse transcriptase, rnase h, and integrase, in that order) but no envelope. there are three to four copies of jule per haploid genome in x. maculatus. two of them are located in a subtelomeric region ... | 2001 | 11158369 |
| human infection with ascaris lumbricoides is associated with suppression of the interleukin-2 response to recombinant cholera toxin b subunit following vaccination with the live oral cholera vaccine cvd 103-hgr. | to investigate the potential immunomodulatory effects of concurrent ascariasis on the cytokine response to a live oral vaccine, we measured cytokine responses to cholera toxin b subunit (ct-b) following vaccination with the live oral cholera vaccine cvd 103-hgr in ascaris lumbricoides-infected subjects randomized in a double-blind study to receive two doses of either albendazole or placebo prior to vaccination and in a group of healthy u.s. controls. postvaccination cytokine responses to ct-b we ... | 2001 | 11179329 |
| gallbladder surgery reveals ascaris lumbricoides. | | 2001 | 11192914 |
| the effect of anthelmintic treatment on helminth infection and anaemia. | a 24-week randomized double blind intervention trial was conducted on adult female tea pluckers from an estate in bangladesh to investigate the impact of iron supplementation and anthelmintic treatment on changes in ferritin and haemoglobin levels as well as on prevalence and intensity of helminth infections. a total of 553 women were randomly assigned to 1 of 4 intervention groups: group 1 received iron supplementation on a weekly basis, group 2 received anthelmintic treatment at the beginning ... | 2001 | 11197758 |
| three common presentations of ascariasis infection in an urban emergency department. | in the united states, approximately 4 million people per year are infected with ascaris lumbricoides. we reviewed the common presentations of complications of ascariasis infection in the emergency department (ed) and the diagnostic tools and treatment available. this was a retrospective case review conducted on all patients diagnosed with ascariasis (using icd-9 codes) over a 6-year period at los angeles county and university of southern california medical center. three patients with distinct co ... | 2001 | 11207407 |
| pancreatitis due to ascaris lumbricoides: second occurrence after 2 years. | pancreatitis is a common disease in the united states, with the most likely etiologies being biliary tract disease and alcohol use. infections with parasites such as ascaris lumbricoides comprise a small percentage of pancreatitis cases in the united states, but they are a common etiology in developing countries. in the united states, the incidence of pancreatic and biliary ascariasis has been increasing because of the migration of people from endemic countries, as well as increased travel by am ... | 2001 | 11213951 |
| bilo-pancreatic ascaris lumbricoides infestation. endoscopic discovery and removal. | ascaris lumbricoides infestation is relatively rare in industrialized countries, and it occurs mainly in conditions in which hygiene is lacking. we describe here a case of a 39-year-old female from ex-jugoslavia affected by recurrent hepatic colic. at entry ultrasonography revealed microlithiasis in the gallbladder and widening of the pancreatic head. the subsequent ercp showed slight filling defects in the choledochus and an inflammation-like stricture of the papilla of vater, and after endosco ... | 2000 | 11218631 |
| geohelminthic infections associated with raw wastewater reuse for agricultural purposes in beni-mellal, morocco. | this study was undertaken to determine the possible risk associated with raw wastewater use for agricultural purposes, particularly, the transmission of geohelminthic infections among children of five regions in beni-mellal, morocco. in a randomly selected sample of 1343 children, 740 of them were from five communities using raw wastewater for agriculture, and 603 were from four control communities that do not practice wastewater irrigation. a questionnaire-interview with children and parents wa ... | 2000 | 11227765 |
| ultrasonographic appearance of ascaris lumbricoides in the small bowel. | roundworm infestation, one of the most common helminthic diseases worldwide, is caused by ascaris lumbricoides, one of the largest parasites that infests the human bowel. a lumbricoides is virtually universal at some stage of childhood in semitropical and tropical regions. this study describes our experience with the ultrasonographic appearance of intestinal ascariasis in 84 patients, 2.5 to 42 years of age, examined over 2 years beginning october 1997. the patients' conditions ranged from acute ... | 2001 | 11270532 |
| a survey on the intestinal parasites of the school children in kaohsiung county. | the present study on the prevalence of intestinal parasites infection, from september to december 1999, was conducted among school children in taoyuan hsiang, kaohsiung county. the investigated areas included three (jiannshan, shingjong and taoyuan) primary schools. the overall infection rate in 305 children determined by merthiolate-iodine-formaldehyde concentration method of stools was 17%. four confirmed species of helminthes (ascaris lumbricoides, hookworm, trichuris trichiura and hymenolepi ... | 2000 | 11271730 |
| ascaris lumbricoides in the lacrimal passage. | ascariasis is caused by the roundworm, ascaris lumbricoides. we report an additional case of live ascaris lumbricoides removed from the lacrimal puncta of a 10-year-old boy. | 2000 | 11271938 |
| methods for estimation of associations between multiple species parasite infections. | human populations are often infected with more than one species of parasite, especially in developing countries where overall rates of parasitism are high. infections with multiple parasite species may not necessarily be independent within an individual as physiological, immunological or ecological factors may result in positive or negative associations between infections with different parasite species. a general framework for estimation of these associations is presented. data from over 215000 ... | 2001 | 11272654 |
| identification of parasitoses in a child burial from adak island (central aleutian islands, alaska). | bothriocephalid (diphyllobothrium pacificum) and ascarid (ascaris lumbricoides) eggs have been identified in a sample taken in the abdominal cavity of a child skeleton found in zeto point (adk-011), an archaeological site on adak island in the central aleutian islands (alaska). | 2001 | 11280043 |
| the dangers of using single locus markers in parasite epidemiology: ascaris as a case study. | molecular markers are used widely to discriminate between closely related species of parasites, and in many cases a single locus is used for this purpose. this article aims to show how molecular data derived from a single genetic marker or linkage group - in this case mitochondrial dna - can lead to ambiguous conclusions and to illustrate how a multilocus approach has enhanced our understanding of the epidemiology of two closely related parasites, the nematodes ascaris suum, which infects pigs, ... | 2001 | 11282508 |
| pancreatitis secondary to ascaris lumbricoides infestation. | | 2001 | 11283547 |
| a health and nutritional profile of rural school children in kwazulu-natal, south africa. | a community-based cross-sectional study was undertaken to measure anthropometric indices, micronutrient status and prevalence of parasite infections in 579 rural south african primary school children. eleven schools were selected randomly from a magisterial district in southern kwazulu-natal (kzn). in each school, all pupils aged between 8 and 10 years were selected. the following outcome measures were obtained: anthropometric--height for age, weight for age and body mass index; micronutrient st ... | 2001 | 11284248 |
| non-invasive management of ascaris lumbricoides biliary tact migration: a prospective study in 69 patients from ecuador. | ascariasis is one of the most common helminthic diseases. its most feared complication is migration into the biliary tree. some authors recommend immediate duodenoscopy in all cases of biliary migration, with sphincterotomy for the extraction of the parasites, and surgical extraction in case of intrahepatic ascariasis. we followed prospectively 69 patients with ultrasonographical evidence of migration. initial treatment consisted of intravenous analgesics and antispasmodics, and albendazole 800 ... | 2001 | 11286203 |
| prevalence of soil-transmitted helminth infections in the rural population of bali, indonesia. | the objectives of this cross-sectional study were to identify the prevalence of soil-transmitted helminth infection in the rural population of bali and its relation to age, gender, and geoclimatic conditions. the subjects of study were derived from four villages of different geoclimatic conditions, namely wet lowland, dry lowland, wet highland and dry highland, by a multistage, stratified random sampling technique, based on age and gender of the target populations. the technique of kato-katz thi ... | 2000 | 11289000 |
| [postoperative insufficiency of duodenal stump sutures caused by ascaris lumbricoides]. | a 43 years old female patient suffered ventricular resection (billroth ii) because of tumor. on the 11. postoperative day an ascaris lumbricoides (with the length of 20 cm) was creeping out of the site of the draining tube onto the abdominal wall. enteral parasites are very rare and strange reasons for postoperative duodenal suture insufficience but our case may deserve some attention considering the well known spreading of ascaris infections. | 2000 | 11299588 |
| increase in serum beta-carotene following dark green leafy vegetable supplementation in mebendazole-treated school children in bangladesh. | to study the effect of consumption of dark green leafy vegetables (dglv) and sweet pumpkin on serum beta-carotene and retinol concentrations in children treated for ascaris lumbricoides. | 2001 | 11303489 |
| prevalence and intensity of infections of ascaris lumbricoides and trichuris trichiura and associated socio-demographic variables in four rural honduran communities. | between january and march 1998, a cross-sectional survey was carried out in four rural communities in honduras, central america. we examined the prevalence and intensity of ascaris lumbricoides and trichuris trichiura infections among 240 fecal specimens, and the association between selected socio-demographic variables and infection for 62 households. the overall prevalence of a. lumbricoides and t. trichiura was 45% (95% ci 39.0-51.9) and 38% (95% ci 31.8-44.4) respectively. the most intense in ... | 2001 | 11313635 |
| a comparative study of different albendazole and mebendazole regimens for the treatment of intestinal infections in school children of usigu division, western kenya. | a clinical trial to compare the effectiveness of 4- and 6-mo repeated treatment with albendazole 600 mg (zentel, smithkline beecham) or mebendazole 600 mg (vermox, janssen) on geohelminth infections was carried out on children in 6 primary schools; the study included 1,186 children, ages 4 to 19 yr. kato-katz examination was performed on stool samples before and after treatment. overall, albendazole produced better cure rates and egg reduction rates for geohelminths. the cure rates for albendazo ... | 2001 | 11318574 |
| myxobolus sp., another opportunistic parasite in immunosuppressed patients? | during a study of intestinal parasitic infections in human immunodeficiency virus-positive patients, a parasite belonging to the phylum myxozoa, recently described from human samples, was identified in one sample. when this parasite was stained by the modified ziehl-neelsen staining method, the features of the spores were identified: they were pyriform in shape, had thick walls, and had one suture and two polar capsules, with each one having four or five coils. the suture and two polar capsules ... | 2001 | 11326017 |
| urinary ascariasis in a man with hematuria. | we present a case believed to be the first reported north american presentation of ascaris lumbricoides within the urogenital tract. a young man came to the emergency department because of painless hematuria and having observed a 6-inch worm exit his urethra while urinating. the most common site for a lumbricoides infection is the gastrointestinal tract, specifically the area of the hepatopancreatic ducts. worldwide, a lumbricoides infections are ubiquitous, but infections outside the alimentary ... | 2001 | 11332920 |
| pharmacotherapy of ascariasis. | ascaris lumbricoides, the most frequent human intestinal nematode, is the causative agent of ascariasis, with an estimated worldwide prevalence of over one billion people, especially in moist tropical and subtropical regions, but also in cooler climates. although characterised with low morbidity and mortality rates, the global prevalence of ascariasis still results in approximately 20,000 deaths annually, primarily as a consequence of intestinal obstruction. in humans, transmission usually occur ... | 2001 | 11336582 |
| [endoscopic treatment of cholestasis caused by ascaris lumbricoides]. | the most common infection of the hepatobiliary system and of the pancreas is the infestation with ascaris lumbricoides. pancreatobiliary ascariasis may present as recurrent biliary colic, acalculous cholecystitis, cholangitis, pancreatitis, or hepatic abscess. although ultrasonography is a highly sensitive and specific method for the detection of the disease, endoscopy may have also therapeutical potential. the majority of these infections is registered in developing countries, but the number of ... | 2001 | 11338572 |
| ascaris lumbricoides in the lacrimal passage. | | 2000 | 11340895 |
| the risk of enteric infections associated with wastewater reuse: the effect of season and degree of storage of wastewater. | the effect of season and wastewater storage on the risk of ascaris lumbricoides infection and diarrhoeal disease associated with wastewater reuse was studied in mexico in 1991. data were collected from 10,489 individuals during a dry-season survey. exposure was to untreated wastewater, or effluent from 1 reservoir (< or = 1 nematode egg/l), or no wastewater irrigation (control group). the results were compared with a previous rainy-season survey which included effluent from 2 reservoirs in serie ... | 2001 | 11355541 |
| improvement of counting helminth eggs with internal standard. | the sanitary regulations introduce a requirement for parasitological control of sewage water used for irrigation and fertilisation of crops. the existing methods of estimation of helminth eggs, based on the coproscopic method using sedimentation, desorption, centrifugation and flotation of the material, allow for only 30-75% efficiency. the aim of this paper is to present an improved quantitative estimation method. the proposed method is based on an internal standard. a predetermined number of e ... | 2001 | 11358316 |
| impact of iron supplementation and deworming on growth performance in preschool beninese children. | to assess the effects of iron and deworming on linear growth performance of preschoolers. | 2001 | 11360125 |
| albendazole: a review of anthelmintic efficacy and safety in humans. | this comprehensive review briefly describes the history and pharmacology of albendazole as an anthelminthic drug and presents detailed summaries of the efficacy and safety of albendazole's use as an anthelminthic in humans. cure rates and 0% egg reduction rates are presented from studies published through march 1998 both for the recommended single dose of 400 mg for hookworm (separately for necator americanus and ancylostoma duodenale when possible), ascaris lumbricoides, trichuris trichiura, an ... | 2000 | 11386684 |
| malnutrition and parasitic helminth infections. | the global burden of disease caused by the 3 major intestinal nematodes is an estimated 22.1 million disability-adjusted life-years (dalys) lost for hookworm, 10.5 million for ascaris lumbricoides, 6.4 million for trichuris trichiura, and 39.0 million for the three infections combined (as compared with malaria at 35.7 million) (world bank, 1993; chan et al. 1994); these figures illustrate why some scarce health care resources must be used for their control. strongyloides stercoralis is the fourt ... | 2000 | 11386688 |
| the public health importance of ascaris lumbricoides. | numerous studies have shown that anthelminthic treatment can be effective in improving growth rates when given to malnourished children with ascariasis. recent investigations have also indicated that ascaris infections can affect mental processing in some school children. poor socio-economic conditions are among the key factors linked with higher prevalences of ascariasis, as are defaecation practices, geophagia, cultural differences relating to personal and food hygiene, occupational necessity, ... | 2000 | 11386692 |
| prevalence of viral, bacterial and parasitic enteropathogens among young children with acute diarrhoea in jeddah, saudi arabia. | the prevalence of viral, bacterial and parasitic pathogens among children of jeddah, saudi arabia, was investigated. during december 1995-october 1996, 576 faecal samples were collected from children (0-5 year(s) old) suffering from acute diarrhoea and attending hospitals and outpatient clinics in jeddah. one or more enteropathogen(s) were identified in 45.6% of the stool specimens. mixed infections were detected in 12.2% of the diarrhoeal cases. rotavirus was detected in 34.6% of the specimens ... | 2001 | 11394180 |
| intestinal parasitic infections in thai hiv-infected patients with different immunity status. | one of the major health problems among hiv seropositive patients is superimposed infection due to the defect of immunity. furthermore, intestinal parasite infection, which is also one of the basic health problems in tropical region, is common in these patients. in this study, a cross sectional study to document the prevalence of intestinal parasitic infection in thai hiv-infected patients with different immune status was performed. | 2001 | 11394966 |
| is immunoproliferative small intestinal disease uncommon in india? | till date only three series of immunoproliferative small intestinal disease (ipsid) describing 22 patients have been reported from india. seven patients with ipsid in two tertiary referral centers in india are included in the study. diagnosis was based on typical clinical features [diarrhoea (7/7), weight loss (7/7), clubbing (6/7), fever (3/7), abdominal pain and lump (3/7)], biochemical evidence of malabsorption and duodenal biopsy findings. all patients were young males (mean age 29.8 +/- 11. ... | 2001 | 11398237 |
| characterization of two monoclonal antibodies raised in btk(xid) mice that recognize phosphorylcholine-bearing antigens from trichinella and other helminths. | this study investigated the binding properties of two monoclonal antibodies (mabs us1 and us2) raised in (cba/n x balb/c)f1 (nbf1) btk(xid) male mice. both mabs show unusual specificity for phosphorylcholine (pc)-containing tsl4 antigens of trichinella. specifically, and in contrast to mabs raised in normal mice, us1 and us2 mabs do not bind to artificial pc-protein conjugates and are not inhibited by either free pc or nppc, although us2 was partially inhibited by nppc at high concentration (10( ... | 2001 | 11412384 |
| effect of intestinal helminthiasis on nutritional status of schoolchildren. | this study was conducted in a rural agricultural area in siniloan, republic of the philippines. the subjects were the school children. the nutritional status of 58 children infected with helminthiasis (ascaris lumbricoides and trichuris trichiura) was compared with that of 19 uninfected controls. prevalence of ascaris and trichuris was 40.3% and 71.4% respectively, and 36.4% of infected children had both ascaris and trichuris infections. statistically significant evidence of an adverse effect of ... | 2000 | 11414425 |
| functional selection of splicing enhancers that stimulate trans-splicing in vitro. | the role of exonic sequences in naturally occurring trans-splicing has not been explored in detail. here, we have identified trans-splicing enhancers through the use of an iterative selection scheme. several classes of enhancer sequences were identified that led to dramatic increases in trans-splicing efficiency. two sequence families were investigated in detail. these include motifs containing the element (g/c)gac(g/c) and also 5' splice site-like sequences. distinct elements were tested for th ... | 2001 | 11421358 |
| intestinal helminth infections, anaemia and labour productivity of female tea pluckers in bangladesh. | we conducted a randomized clinical intervention trial over 24 weeks on a tea estate in north-east bangladesh to investigate the effect of iron supplementation and anthelmintic treatment on the labour productivity of adult female tea pluckers. a total of 553 full-time tea pluckers, not pregnant and not breastfeeding, were randomly assigned to one of the four intervention groups: group 1 received iron supplementation on a weekly basis, group 2 received anthelmintic treatment at the beginning and h ... | 2001 | 11422959 |
| an unusual presentation of acute cholecystitis: biliary ascariasis. | | 2001 | 11436449 |
| [acute appendicitis at the national university hospital in bangui, central african republic: epidemiologic, clinical, paraclinical and therapeutic aspects]. | we carried out a retrospective study to analyse clinical, paraclinical and therapeutic aspects of acute appendicitis cases as the national university hospital (cnhu) at bangui in the central african republic. we compared our findings with those for other african countries and for industrialized countries. from september 15 1990 to february 15 1992, 285 patients underwent laparotomy to treat acute appendicitis. we carried out a study of clinical, paraclinical and therapeutic aspects on 57 patient ... | 2001 | 11440889 |
| follow-up of ascaris lumbricoides and trichuris trichiura infections in children living in a community treated with ivermectin at 3-monthly intervals. | ivermectin treatment was administered every 3 months over a 1-year period (april 1993-april 1994) to the whole eligible population of a village in south cameroon where both ascaris lumbricoides and trichuris trichiura were hyper-endemic. a parasitological stool examination was performed before each treatment. thirty children, aged 5-15 years, were not only found egg-positive for a. lumbricoides and/or t. trichiura before the first treatment but were also each treated and examined in each treatme ... | 2001 | 11454248 |
| possible approach for serodiagnosis of ascariasis by evaluation of immunoglobulin g4 response using ascaris lumbricoides somatic antigen. | somatic antigen of ascaris lumbricoides was purified to homogeneity (molecular mass, 34 kda) by ammonium sulfate fractionation and successive chromatographic procedures, namely, gel permeation, ion exchange, and high-performance gel permeation liquid chromatographies. the antigen showed strong binding with immunoglobulin g (igg) in ascaris-infested patients and was cross-reactive with ige and igg in patients infested with other nematodes. it reacted specifically with igg4 (p < 0.001) in 63 ascar ... | 2001 | 11474031 |
| impact of intestinal helminth infection on anemia and iron status during pregnancy: a community based study in indonesia. | a cohort study was carried out in purworejo district, central java, indonesia to investigate prevalence of anemia and low iron stores during pregnancy in relation to intestinal helminth infection. 442 pregnant women were followed until 5-10 weeks postpartum, during the period of april 1996 - august 1998. information on intestinal helminths, hemoglobin and serum ferritin was collected each trimester. highest prevalence of anemia in pregnancy (37.1%) was found in the second trimester, while the hi ... | 2001 | 11485075 |
| relationship of intestinal parasites to the environment and to behavioral factors in children in the bolikhamxay province of lao pdr. | from march to july 1998 the infection rates of 732 children aged below 15 years were assessed. the investigation was conducted in selected villages of the bolikhamxai province in lao pdr. socio-economic conditions and behavioral pattern were studied. the three soil-transmitted helminths, ascaris lumbricoides, trichuris trichiura and hookworm were found with prevalence rates of 67.14, 17.49 and 12.83%, respectively. infection rates with other intestinal parasites were negligible. of the children ... | 2001 | 11485093 |
| soil-transmitted helminth infections at very high altitude in bolivia. | a cross-sectional study of soil-transmitted helminthiases in the northern bolivian altiplano was carried out over the 6-year period 1992-97. prevalences, intensities and associations were analysed from coprological results obtained in 31 surveys (28 in schools and 3 in individuals of all age-groups) performed in 24 aymara communities located between the city of la paz and lake titicaca, at an altitude of 3800-4200 m. ascaris lumbricoides and trichuris trichiura were detected, with local prevalen ... | 2001 | 11490995 |
| serodiagnosis of ascariasis with specific igg4 antibody and its use in an epidemiological study. | in an earlier study ascaris-specific igg4 antibody was found to be elevated in cases of ascariasis. however, the usefulness of the elevated levels of this antibody in ascaris infection as a diagnostic marker has not been well established. in india, in early 1999, blood samples of 83 cases of ascaris infection, 35 cases of other nematode infection and 53 control subjects (without any helminth infection) were tested for anti-ascaris igg4 by elisa. further anti-ascaris igg4 levels in the blood of a ... | 2001 | 11490999 |
| hydrogen bonding and o(2) affinity of hemoglobins. | | 2001 | 11516309 |
| regulation of sr protein localization during development. | ser-arg-rich (sr) proteins play numerous roles in spliceosome assembly and the regulation of splice-site selection. whereas considerable attention has focused on the mechanistic details of sr protein activities, little is known concerning how these splicing regulators are controlled by the cell. here we examined the subcellular localization of precursor mrna splicing factors during early development of the nematode ascaris lumbricoides. in the early embryo, before major zygotic gene activation, ... | 2001 | 11526235 |
| the electrical and mechanical activity of the esophageal cell of ascaris lumbricoides. | the esophagus of ascaris is a syncytial muscle organ of tubular shape in which the myofibrils are arranged radially between the lumen and the external surface. a resting potential of almost 40 mv (cytoplasm negative) is maintained by the extracellular organic anions (volatile fatty acids) found in the perienteric fluid. replacement of these anions by cl- ions results in a large depolarization. the resting potential is also decreased when the external ph is lowered. the leading phase of the actio ... | 1967 | 11526849 |
| extracellular action potentials recorded from the interior of the giant esophageal cell of ascaris. | exploration of the cytoplasm of the giant esophageal cell of ascaris with a recording microelectrode shows the existence of shallow spaces where the microelectrode tip becomes extracellular in spite of being in the interior of the cell. when the microelectrode penetrates into these spaces from the cytoplasm, the resting potential shifts to a different level or entirely disappears. at the same time the large intracellular spikes are replaced by small transients similar to extracellularly recorded ... | 1967 | 11526850 |
| clinical appraisal of ascaris lumbricoides, with special reference to surgical complications. | over a period of 4 years (january 1993-december 1997), 509 patients were treated for abdominal colic with or without intestinal obstruction and a history of passage of adult roundworms either in the stool or in vomitus. all patients were below the age of 10 years, the youngest 6 months old, and were treated successfully with antispasmodics and normal saline enemas. when the pain subsided, an anthelminthic drug was given. of 209 patients admitted to the hospital, 105 responded to conservative man ... | 2001 | 11527176 |
| gastrointestinal parasitic infection, anthropometrics, nutritional status, and physical work capacity in colombian boys. | this article tests the hypothesis that the presence of gastrointestinal parasites in colombian boys is negatively associated with anthropometric characteristics, physical work capacity, blood hemoglobin (hb) levels, and nutritional status. anthropometric, hb, &vdot;o(2) max, and parasite load data were collected on 1,016 boys in cali, colombia. the boys were classified as lower socioeconomic class (sec) from either urban or rural environments, and upper sec from an urban environment. sixty-three ... | 1999 | 11533992 |
| epidemiology of necator americanus hookworm infections in xiulongkan village, hainan province, china: high prevalence and intensity among middle-aged and elderly residents. | hookworm is highly endemic to hainan province, an island located in the south china sea. to investigate the prevalence and intensity of infection in the area, the village of xiulongkan was surveyed between april and july 1998. a cross-sectional study was conducted in which fecal samples of 80% of the village residents (631 individuals) were tested for the presence of helminth eggs. hookworm was the predominant intestinal helminth in xiulongkan, where it was determined that 60% of those tested we ... | 2001 | 11534635 |
| contemporaneous and successive mixed plasmodium falciparum and plasmodium vivax infections are associated with ascaris lumbricoides: an immunomodulating effect? | following an investigation suggesting a protective role for ascaris against cerebral malaria, possibly through immunomodulation, we examined whether ascaris had any impact on mixed plasmodium falciparum and plasmodium vivax infections. we studied a cross section of 928 patient files between 1991 and 1999. forty patients had contemporaneous mixed infections and 40 patients had p. falciparum infections, followed by p. vivax infections. there was a significant association between ascaris infection ... | 2001 | 11534659 |
| low prevalence of cryptosporidium parvum in hospitalized children in kota bharu, malaysia. | the aim of this prospective study was to determine the prevalence of cryptosporidium parvum in hospitalized children in kota bharu, malaysia. over a 19 month study period, 258 stool samples were examined from 159 children; 109 with diarrhea and 50 controls without diarrhea. modified ziehl-neelsen staining method and a polymerase chain reaction (pcr) assay were used to detect c. parvum and the samples were also examined for the presence of other intestinal parasites. only 1 of the 109 (0.9%) chil ... | 2001 | 11556583 |
| endoscopic removal of ascaris lumbricoides from the biliary tract as emergency treatment for acute suppurative cholangitis. | ascariasis is the most common intestinal helminthiasis worldwide. heavily infected individuals are prone to develop bowel obstruction or perforation as well as biliary disease. nevertheless, the presence of roundworms in the biliary tree outside endemic areas is very uncommon. the migration of these worms to the biliary system can cause biliary colic, pancreatitis, or even acute suppurative cholangitis with hepatic abscesses and septicemia. we report here on 2 infants with 14 and 15 months and a ... | 2001 | 11558071 |
| in vitro study on thiabendazole action on viability of ascaris lumbricoides (lineu, 1758) eggs. | the in vitro activity of thiabendazole on ascaris lumbricoides eggs, which were recovered from uteri of worm excreted after chemotherapeutic treatment, was studied. four concentrations of the drug were used: 1 - 2.5 - 5 - and 10 ppm during 24, 48 and 72 hours of exposure. subsequently, the eggs were centrifuged, washed three times and h(2)so(4)0.1n was added. the eggs were maintained in an incubator for 20 days at 28 degrees c. finally, the percentage of embryonated eggs was determined under a l ... | 2001 | 11562723 |
| ultrasonographic features of pseudotumorous form of ascariasis. | 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' ... | 2001 | 11566248 |
| hepatobiliary and pancreatic complications of ascariasis in children: a study of seven cases. | this study presents seven cases of severe hepatobiliary and pancreatic complications of ascariasis in children. the authors describe the clinical, laboratory, and imaging findings, as well as the patients' clinical evolution. | 2001 | 11593121 |
| [detection of transmissible forms of enteroparasites in water and vegetables consumed at schools in sorocaba, são paulo state, brazil]. | water and raw vegetables consumed in ten nursery schools were evaluated for the presence of transmissible forms of enteroparasites. the water was submitted to filtration through membranes. the washed membrane water was submitted to the faust method. the in natura and washed vegetables were washed and the water analyzed by the sedimentation method. contamination was not detected in one school; in two schools, all the materials were contaminated; in four schools, two items were contaminated and in ... | 2001 | 11600915 |
| six-monthly de-worming in infants to study effects on growth. | the study was conducted to assess the effectiveness of six monthly albendazole (abz) for improving the weight and height of preschool children when initiated at 0.5-1 year of age in populations with a high transmission rate of intestinal roundworm, ascaris lumbricoides. it was a cluster randomized trial in the urban slums of lucknow, north india. | 2001 | 11669028 |
| a study of risk factors for intestinal helminth infections using epidemiological and anthropological approaches. | this study. conducted in kisumu district, kenya, identified important risk factors for infection with intestinal helminths using traditional epidemiological methods. this was combined with a rapid assessment study using qualitative methods, which focused on sanitation practices and local illness perceptions. the multiple logistic regression analysis revealed that the absence of latrines was a significant predictor for hookworm infection with an odds ratio (or) of 1.9. the analysis also revealed ... | 2001 | 11683225 |
| environmental pollution with soil-transmitted helminths in sanliurfa, turkey. | soil transmitted helminth (sth) infection are endemic in developing countries. a study was carried out of sewage farms, streams and vegetables to determine the sources and routes of sth infection in sanliurfa, turkey. stool samples from farmhouse inhabitants as well as soil and vegetable samples from the gardens were collected and examined. in addition, water samples from streams and vegetable samples from the city market were collected and examined. one hundred and eighty-seven (59.5%) of a tot ... | 2001 | 11685253 |
| short report: prevalence of fecal encephalitozoon sp. spores among hospitalized patients in nepal. | during the months of june and july 1998, stool samples from 341 hospitalized patients (mean age, 32.7 +/- 16.3 years; range, 1-86 years) from kathmandu, nepal, were screened for the prevalence of encephalitozoon sp. by use of anti-encephalitozoon sp. monoclonal antibody 3b6-based immunofluorescence assay. the cross-sectional study revealed the presence of encephalitozoon spores in 0.6% (2 of 341) patients. by use of direct microscopic examination, 27% (93 of 341) of patients were diagnosed with ... | 2001 | 11716130 |
| biliary ascariasis in children. | ascariasis is very common in this part of the world. biliary ascariasis is rare but is the commonest extra-intestinal complication. | 2001 | 11732219 |
| helminthic infestations in the tyrol, austria. | at the federal public health laboratory, innsbruck, 142 426 samples were examined for intestinal helminthosis from 1990 until 2000. enterobius vermicularis accounted for half (49.7%) of the cases diagnosed, followed by taenia saginata (28.3%), ascaris lumbricoides (12.8%), and trichuris trichiura (3.9%). of all specimens tested for helminths, 26% had been positive in 1945, and 0.98% in 1985. the proportion of positive findings with respect to the total number of specimens tested was 0.24% in the ... | 2001 | 11737090 |
| effects of iron supplementation and anthelmintic treatment on motor and language development of preschool children in zanzibar: double blind, placebo controlled study. | to measure the effects of iron supplementation and anthelmintic treatment on iron status, anaemia, growth, morbidity, and development of children aged 6-59 months. | 2001 | 11744561 |
| biliary ascariasis: mr cholangiography findings in two cases. | we describe the imaging features of two cases of biliary ascariasis. ultrasonography and ct showed no specific abnormal findings, but mr cholangiography clearly demonstrated an intraductal linear filling defect that led to the correct diagnosis. mr cholangiography is thus a useful technique for the diagnosis of biliary ascariasis. | 2001 | 11752990 |
| [anthelmintics as a risk factor in intestinal obstruction by ascaris lumbricoides in children]. | in a retrospective study the authors analyzed the clinical records of 199 children ages one month to 16 years hospitalized, with the diagnosis of intestinal ascariasis, in the instituto nacional de pediatria of mexico from 1984 to 1999. the purpose of the study was to evaluate the use of anthelmintics drugs as a risk factor of intestinal obstruction by a. lumbricoides. two groups were made for the study: group a (n = 66) of children who presented intestinal obstruction, group b (n = 133) childre ... | 2000 | 11757415 |
| right hepatic segmentectomy for the treatment of intrahepatic biliary stones due to ascaris lumbricoides: report of a case. | we report herein the case of a 46-year-old woman investigated for recurrent acute cholangitis. ultrasound, endoscopic retrograde cholangiopancreatography, and computed tomography scan revealed dilatation and multiple images suggestive of intrahepatic biliary stones in the ducts that drained segments v and vi of the liver. endoscopic treatment was attempted unsuccessfully, and based on the severity of the last crisis of cholangitis a laparotomy was performed. a right hepatic lobectomy including s ... | 2001 | 11766075 |
| liver abscess caused by ascaris lumbricoides: case report. | a case is reported of a woman who lived in a rural area with a chronic illness that consisted of weight loss and abdominal pain in the epigastrium and upper right quadrant. the initial diagnosis was a mass in the liver, which was later, demonstrated, both by direct and histological examination, to be an abscess caused by ascaris lumbricoides. eggs of ascaris lumbricoides and abundant charcot-leyden crystals were found. | 2001 | 11781607 |
| plasmodium/intestinal helminth co-infections among pregnant nigerian women. | hospital based studies were conducted to investigate the occurrence of plasmodium/intestinal helminth co-infections among pregnant nigerian women, and their effects on birthweights, anaemia and spleen size. from 2,104 near-term pregnant women examined, 816 (38.8%) were found to be infected with malaria parasites. among the 816 parasitaemic subjects, 394 (48.3%) were also infected with intestinal helminths, 102 (12.5%) having mixed helminth infections. the prevalence of the helminth species found ... | 2001 | 11784922 |
| prevalence and intensity of soil-transmitted helminthiasis in the city of portoviejo (ecuador). | we studied the stool samples of 151 school children in a district of the city of portoviejo (ecuador) in order to determine the prevalence and intensity of soil-transmitted helminthiasis (sth) and their relationships with anthropometric indices. the samples were analyzed with the semiquantitative kato-katz technique and the intensity of infections was categorized as light, moderate or high according to the thresholds set by the world health organization. prevalence of soil transmitted helmintias ... | 2001 | 11784925 |