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Updated: Jul 28, 2026

Humanized NOD/SCID/IL2rγnull (hu-NSG) Mouse Model for HIV Replication and Latency Studies
Published on: January 7, 2019
[Intestinal absorption of D-xylose in children infected with the human immunodeficiency virus]
N M Perin1, M M Pires, S M Nassar
1Universidade Federal de Santa Catarina, Serviço de Gastroenterologia Pediátrica, Hospital Infantil Joana de Gusmão. nperin@fitnet.com.br
Insights
Intestinal malabsorption is uncommon in HIV-infected children. When present, it is linked to Cryptosporidium infection, not other factors like diarrhea or immune status.
Area of Science:
- Pediatric Infectious Diseases
- Gastroenterology
- Clinical Immunology
Context:
- Human Immunodeficiency Virus (HIV) infection impacts children globally.
- Gastrointestinal complications are common in pediatric HIV.
- Understanding intestinal dysfunction is crucial for managing nutritional status and growth.
Purpose:
- To assess intestinal absorption using serum D-xylose levels in HIV-infected children.
- To determine the relationship between malabsorption and diarrhea, nutritional status, immune dysfunction, and enteric pathogens.
- To specifically investigate the role of Cryptosporidium in intestinal dysfunction.
Summary:
- Serum D-xylose absorption was evaluated in 104 HIV-infected children aged 14 months to 14 years.
- Altered D-xylose absorption was found in 7.7% of children; Cryptosporidium was detected in 31.73%.
- Multiple correspondence analysis indicated an association between malabsorption and Cryptosporidium, but not with diarrhea, nutritional status, or immune dysfunction.
Impact:
- Intestinal malabsorption is infrequent in this pediatric HIV population.
- Cryptosporidium appears to be a significant factor in intestinal dysfunction among HIV-infected children.
- Findings suggest targeted interventions for Cryptosporidium may improve gut health in these children.
Aim:
To evaluate the intestinal absorption in HIV-infected children children 14 months to 14 years and to investigate its relationship to diarrhea, nutritional status, immune dysfunction, classical enteric parasites and Cryptosporidium.
Methods:
Intestinal absorption was investigated by measuring serum D-xylose. Fecal samples were investigated for classical pathogens and Cryptosporidium. The sample size was calculated considering a 30% prevalence of altered D-xylose absorption in HIV-infected children with a 5% accuracy. Statistical procedures used were: descriptive measurements, multiple correspondence analysis and logistic regression.
Results:
D-xylose absorption was altered in only 8 out of 104 (7.7%) and Cryptosporidium was positive in 33 out of 104 (31.73%) HIV-infected children. The multiple correspondence analysis suggested an association between an altered D-xylose test and Cryptosporidium. D-xylose malabsorption was not associated with diarrhea, nutritional status, immune disfunction and classic enteric parasites.
Conclusions:
Intestinal malabsorption evaluated through the D-xylose test was an uncommon finding in HIV-infected children. Intestinal dysfunction when present seems to be related to Cryptosporidium, but not to diarrhea, nutritional status, immune disfunction and classic enteric parasites.
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