A New Technique for Sampling Duodenal Contents

Beal, Charles B.; Viens, P.; Grant, Rupert G. L.; Hughes, James M.

doi:10.4269/ajtmh.1970.19.349

Cited by 125 publications

(13 citation statements)

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“…The adultsized capsule has previously been shown to be of use in diagnosis of parasitic infestations (Beal et al, 1970) and in the present study using a paediatric capsule parasites were found in 3 of the 10 patients. Cultures of intestinal samples showed that all except one of these patients had microbial contamination of the upper gut similar to the results found in a similar group of patients in the same institution some years ago (Gracey et al, 1973).…”

Section: Discussionsupporting

confidence: 56%

Use of a simple duodenal capsule to study upper intestinal microflora.

Gracey¹,

Suharjono²,

Sunoto³

1977

Archives of Disease in Childhood

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Section: Discussionsupporting

confidence: 56%

Use of a simple duodenal capsule to study upper intestinal microflora.

Gracey¹,

Suharjono²,

Sunoto³

1977

Archives of Disease in Childhood

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“…This allows the ingested string to be retrieved and gastrointestinal microbes absorbed to the string to be recovered and studied. It has often been used to detect gastroduodenal parasites, such as Giardia lamblia, by microscopy (3,11,15) and Salmonella enterica serovar Typhi and Mycobacterium tuberculosis by bacterial culture (8,9,29). Recent studies also tested its potential for H. pylori culture (14, 18) but produced highly variable results: there were reported sensitivities of nearly 100% and 75% in Australia and Mexico, respectively, relative to a standard urea breath test (24,27) and 38% and 81% in China and Germany, respectively, relative to histologic examination or biopsy culture (16,17).…”

mentioning

confidence: 99%

Validation of String Test for Diagnosis of Helicobacter pylori Infections

et al. 2006

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The method of recovering Helicobacter pylori DNA or viable cells absorbed on a string that a person has swallowed and that is retrieved an hour later (string test) should be a useful alternative to traditional analysis of cells or DNA obtained by endoscopy, which is invasive, uncomfortable, relatively costly, and ill-suited for community-based and pediatric studies. Here we assayed the sensitivity and validity of the string test versus conventional endoscopic biopsy for detecting and analyzing H. pylori infection. Forty-four people with gastric complaints were studied using both H. pylori culture and urease gene (ureB) PCR. H. pylori organisms cultured from strings and biopsy specimens from the same patients were fingerprinted by the randomly amplified polymorphic DNA (RAPD) method. Biopsy sections were also hematoxylin and eosin and silver stained for H. pylori detection. H. pylori was cultured from 80% of strings and detected by PCR from 91% of strings from participants whose biopsies had been H. pylori positive by culture, PCR, and/or histology. Strains recovered from strings and biopsy specimens yielded identical or closely related RAPD profiles in each of the 24 cases tested. We conclude that the string test is a useful method for H. pylori recovery and analysis when relatively noninvasive procedures are needed.

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“…In older children (that is, 3 years or older), diagnoses were based on examination of duodenal secretions collected with the Enterotest system (HDC Corporation, Mountain View, CA, USA) 14. All patients underwent microbiological screening for the following pathogens: Salmonella , Shigella , Campylobacter , Yersinia , Escherichia coli , rotavirus, and adenovirus,15 If any pathogenic micro-organisms, different from Giardia lamblia , were found the patient was excluded from the study.…”

Section: Methodsmentioning

confidence: 99%

Ocular changes associated with Giardia lamblia infection in children

Corsi

Nucci

Knafelz

et al. 1998

British Journal of Ophthalmology

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Background-The protozoan disease giardiasis can cause ocular complications, including "salt and pepper" retinal changes. Methods-Ophthalmic examinations were performed in 141 children (mean age 4.7 (SD 2.0) years) with active or past giardiasis diagnosed on the basis of microscopic examination of stool specimens or duodenal secretions-53 were newly diagnosed and untreated (group A), 50 had active infections in spite of metronidazole therapy (group B), and 38 had been successfully treated, with negative stool specimens for 1-3 years (group C). 300 children with no evidence of giardiasis were used as controls. Results-Salt and pepper retinal changes (with normal electroretinographic findings) were diagnosed in 28 (19.9%) of the patients with giardiasis (11 from group A, 10 from group B, and seven from group C), including five pairs of siblings. In all subgroups, the children with retinal changes were consistently younger than those with normal retinas. In eight cases, the lesions could be visualised only with direct ophthalmoscopy. Conclusion-Our findings indicate that asymptomatic, non-progressive retinal lesions are particularly common in younger children with giardiasis. This risk does not seem to be related to the severity of the infection, its duration, or the use of metronidazole but may reflect a genetic predisposition. (Br J Ophthalmol 1998;82:59-62)

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A New Technique for Sampling Duodenal Contents

Cited by 125 publications

References 0 publications

Use of a simple duodenal capsule to study upper intestinal microflora.

Use of a simple duodenal capsule to study upper intestinal microflora.

Validation of String Test for Diagnosis of Helicobacter pylori Infections

Ocular changes associated with Giardia lamblia infection in children

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