Parasitic infections in a pediatric population

Spencer, Mark G.; Millet, Victoria E.; Garcia, Lynne S.; Rhee, Lois; Masterson, Lena

doi:10.1097/00006454-198303000-00008

Cited by 18 publications

(13 citation statements)

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“…The peak incidence was found in pre-school boys, and this finding is in contrast to previous studies [9], where the highest prevalence was found in young girls. The reason might be the behavior of this age and sex cohort.…”

Section: Clin Microbiol Infect 2003; 9: 65-68contrasting

confidence: 99%

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Dientamoeba fragilis—a protozoal infection which may cause severe bowel distress

Norberg

Nord

Evengård

2003

Clinical Microbiology and Infection

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A retrospective study of 87 patients diagnosed with the protozoan Dientamoeba fragilis was performed due to a recent increase in the number of patients diagnosed with this organism at the Unit of Clinical Parasitology, Huddinge University Hospital, Stockholm, Sweden. Medical records were reviewed. The highest incidence was found in pre-school boys, who also had the longest duration of symptoms, with a range of 1-630 weeks. A majority of the patients had symptoms of diarrhea, abdominal pain and flatus. The diarrhea varied from watery to loose, blood being reported only sporadically. Most patients had traveled outside Europe and had no other parasites in their stools. This study indicates potential pathologic properties in D. fragilis, and prospective studies are recommended.

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Section: Clin Microbiol Infect 2003; 9: 65-68contrasting

confidence: 99%

“…In accordance with previous reports [7,9,10,13], the most commonly found symptoms were abdominal pain, loose stools or diarrhea, flatulence, anorexia, and fatigue. As these are well documented, it is of importance that fecal sampling becomes part of the routine investigation of this symptomatology.…”

Section: Clin Microbiol Infect 2003; 9: 65-68supporting

confidence: 92%

Dientamoeba fragilis—a protozoal infection which may cause severe bowel distress

Norberg

Nord

Evengård

2003

Clinical Microbiology and Infection

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“…58 Based et al 30 found Dientamoeba mostly in the stools of children aged 8 to 15 years. Spencer et al 69 found that 21% of children attending pediatric and dental clinics at the University of California, Los Angeles (UCLA), harbored Dientamoeba. In another study, Dientamoeba was recovered in approximately 83% of pediatric patients suspected of harboring an enteric parasite.…”

Section: The Sex Distribution Of Dientamoebamentioning

confidence: 99%

A review ofDientamoeba fragiliscarriage in humans: Several reasons why this organism should be considered in the diagnosis of gastrointestinal illness

Barratt¹,

Harkness²,

Marriott³

et al. 2011

Gut Microbes

122

131

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Dientamoeba fragilis is a protozoan that inhabits the human gut. It is approximately 100 years since Dientamoeba's discovery and first description when it was described as a rare and harmless commensal. Since then it has struggled to gain recognition as a pathogen despite the evidence supporting its pathogenicity. Dientamoeba remains neglected, probably due to the misconceptions that it is uncommon and non-pathogenic. Usually, carriage of Dientamoeba is associated with symptoms such as abdominal pain and diarrhea. Moreover, antimicrobial therapy followed by resolution of symptoms coincides with the eradication of Dientamoeba. This manuscript reviews the scientific literature relating to Dientamoeba's prevalence and pathogenicity. While much of the evidence supporting its pathogenicity is only circumstantial, it is apparent that most researchers agree that Dientamoeba is pathogenic. Therefore, in symptomatic patients who harbor Dientamoeba and no other pathogen, Dientamoeba should be considered as the etiological agent and treated as such.

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“…The combination of fixative and stain is important since this can greatly affect the quality of protozoan morphology. Generally, the trend has been to use PVA or Schaudinn's fixative with Wheatley's trichrome (7,53,79,116,117,118) or SAF fixative with iron-hematoxylin (67,71,145). SAF has been used with Wheatley's trichrome (84,143), but this may not give optimal results (46).…”

Section: Stainingmentioning

confidence: 99%

Emerging from Obscurity: Biological, Clinical, and Diagnostic Aspects of Dientamoeba fragilis

2004

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Ever since its first description in 1918, Dientamoeba fragilis has struggled to gain recognition as a significant pathogen. There is little justification for this neglect, however, since there exists a growing body of case reports from numerous countries around the world that have linked this protozoal parasite to clinical manifestations such as diarrhea, abdominal pain, flatulence, and anorexia. A number of studies have even incriminated D. fragilis as a cause of irritable bowel syndrome, allergic colitis, and diarrhea in human immunodeficiency virus patients. Although D. fragilis is most commonly identified using permanently stained fecal smears, recent advances in culturing techniques are simplifying as well as improving the ability of investigators to detect this organism. However, there are limitations in the use of cultures since they cannot be performed on fecal samples that have been fixed. Significant progress has been made in the biological classification of this organism, which originally was described as an ameba. Analyses of small-subunit rRNA gene sequences have clearly demonstrated its close relationship to Histomonas, and it is now known to be a trichomonad. How the organism is transmitted remains a mystery, although there is some evidence that D. fragilis might be transmitted via the ova of the pinworm, Enterobius vermicularis. Also, it remains to be answered whether the two distinct genotypes of D. fragilis recently identified represent organisms with differing virulence

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Parasitic infections in a pediatric population

Cited by 18 publications

References 0 publications

Dientamoeba fragilis—a protozoal infection which may cause severe bowel distress

Dientamoeba fragilis—a protozoal infection which may cause severe bowel distress

A review ofDientamoeba fragiliscarriage in humans: Several reasons why this organism should be considered in the diagnosis of gastrointestinal illness

Emerging from Obscurity: Biological, Clinical, and Diagnostic Aspects of Dientamoeba fragilis

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