Impaired hydrogen metabolism in pneumatosis cystoides intestinalis
| Autor: | Peter R. Murgatroyd, Wolfgang Scheppach, S.U. Christl, John H. Cummings, Glenn R. Gibson |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Adult
Male medicine.medical_specialty Lactulose Basal (phylogenetics) Feces Internal medicine Pneumatosis Cystoides Intestinalis medicine Ingestion Humans Breath test Hepatology medicine.diagnostic_test Bacteria business.industry Sulfates Gastroenterology Metabolism Middle Aged Endocrinology Conventional PCI business Methane medicine.drug Hydrogen |
| Zdroj: | Gastroenterology. 104(2) |
| ISSN: | 0016-5085 |
| Popis: | Background: Pneumatosis cystoides intestinalis (PCI) is characterized by high levels of breath hydrogen. Clinical features of PCI may be due to abnormal H 2 metabolism. Methods: Breath levels of H 2 and CH 4 were measured in 3 patients and total gas in 2 patients with PCI on a polysaccharide-free (basal) diet and after administration of 15 g of lactulose. Metabolic activities and counts of methanogenic (MB) and sulfate-reducing (SRB) bacteria were measured in feces. Ten volunteers were also studied. Results: Total H 2 levels in patients were 383–420 mL/day on the basal diet and 1430–1730 mL/day after lactulose administration compared with 35 ± 6 mL/day and 262 ± 65 mL/day, respectively, in controls. Basal breath H 2 levels in controls were 27 ± 6 vs. 214 ± 27 mL/day in patients and after lactulose ingestion, 115 ± 18 vs. 370 ± 72 mL/ day. Four controls were methanogenic and had high fecal MB counts. The other controls had high SRB counts and sulfate reduction rates. All patients were nonmethanogenic and had low sulfate reduction rates. Conclusions: Patients with PCI excrete more H 2 than controls. In normal subjects, H 2 is consumed by MB or SRB; the activity of these bacteria is virtually absent in PCI. This may explain the gas accumulation in these patients. |
| Databáze: | OpenAIRE |
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