| Title |
Inhibition of Clostridium difficile Toxin A–Induced Colitis in Rats by APAZA
|
|---|---|
| Published in |
Digestive Diseases and Sciences, March 2005
|
| DOI | 10.1007/s10620-005-2476-1 |
| Pubmed ID | |
| Authors |
Douglas C. Mcvey, Rodger A. Liddle, Jennifer y, Nnochiri Ekwuribe, Steven R. Vigna |
| Abstract |
A new compound, APAZA, consisting of a molecule of 5-aminosalicylic acid linked to one molecule of 4-aminophenylacetic acid by an azo bond, was testedfor its ability to inhibit acute colitis in rats caused by Clostridium difficile toxin A. When administered chronically for 5 days in drinking water, APAZA significantly inhibited toxin A-induced myeloperoxidase activity, luminal fluid accumulation, and structural damage to the colon at doses of from 1 to 100 mg/kg x day. For comparison, sulfasalazine was administered in identical doses and was found to significantly inhibit toxin A-induced colitis only at the dose of 100 mg/kg x day. When 4-aminophenylacetic acid alone was administered chronically in drinking water, it also inhibited toxin A-induced colonic inflammation at a dose of 100 mg/kg x day. In order to determine if 4-aminophenylacetic acid has a direct anti-inflammatory effect on the colon rather than a systemic effect, 4-aminophenylacetic acid was administered acutely to surgically prepared isolated colonic segments by intraluminal injection in anesthetized rats 30 min before toxin A was injected. 4-Aminophenylacetic acid strongly and significantly inhibited toxin A-induced colitis in this experiment at doses as low as 10 microg/segment. It is concluded that APAZA is a potent inhibitor of toxin A-induced colonic inflammation in rats and that its constituent, 4-aminophenylacetic acid, is responsible for this increased protection against colitis compared to the 5-aminosalicylic acid component of sulfasalazine. |
Mendeley readers
The data shown below were compiled from readership statistics for 14 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Canada | 1 | 7% |
| Unknown | 13 | 93% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 3 | 21% |
| Professor > Associate Professor | 2 | 14% |
| Professor | 2 | 14% |
| Other | 1 | 7% |
| Student > Doctoral Student | 1 | 7% |
| Other | 2 | 14% |
| Unknown | 3 | 21% |
| Readers by discipline | Count | As % |
|---|---|---|
| Medicine and Dentistry | 3 | 21% |
| Biochemistry, Genetics and Molecular Biology | 2 | 14% |
| Chemistry | 2 | 14% |
| Immunology and Microbiology | 1 | 7% |
| Pharmacology, Toxicology and Pharmaceutical Science | 1 | 7% |
| Other | 2 | 14% |
| Unknown | 3 | 21% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 17 June 2014.
All research outputs
#7,917,073
of 23,854,458 outputs
Outputs from Digestive Diseases and Sciences
#1,379
of 4,304 outputs
Outputs of similar age
#21,562
of 61,242 outputs
Outputs of similar age from Digestive Diseases and Sciences
#8
of 19 outputs
Altmetric has tracked 23,854,458 research outputs across all sources so far. This one is in the 44th percentile – i.e., 44% of other outputs scored the same or lower than it.
So far Altmetric has tracked 4,304 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.8. This one is in the 43rd percentile – i.e., 43% of its peers scored the same or lower than it.
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We're also able to compare this research output to 19 others from the same source and published within six weeks on either side of this one. This one is in the 5th percentile – i.e., 5% of its contemporaries scored the same or lower than it.