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Altered vasoactive intestinal peptides expression in irritable bowel syndrome patients and rats with trinitrobenzene sulfonic acid-induced colitis.
World J Gastroenterol 2015; 21(1):155-63WJ

Abstract

AIM

To investigate the vasoactive intestinal peptides (VIP) expression in irritable bowel syndrome (IBS) and trinitrobenzene sulfonic acid (TNBS) induced colitis.

METHODS

The VIP gene expression and protein plasma levels were measured in adult participants (45.8% male) who met Rome III criteria for IBS for longer than 6 mo and in a rat model of colitis as induced by TNBS. Plasma and colons were collected from naïve and inflamed rats. Markers assessing inflammation (i.e., weight changes and myeloperoxidase levels) were assessed on days 2, 7, 14 and 28 and compared to controls. Visceral hypersensitivity of the rats was assessed with colo-rectal distension and mechanical threshold testing on hind paws. IBS patients (n = 12) were age, gender, race, and BMI-matched with healthy controls (n = 12). Peripheral whole blood and plasma from fasting participants was collected and VIP plasma levels were assayed using a VIP peptide-enzyme immunoassay. Human gene expression of VIP was analyzed using a custom PCR array.

RESULTS

TNBS induced colitis in the rats was confirmed with weight loss (13.7 ± 3.2 g) and increased myeloperoxidase activity. Visceral hypersensitivity to colo-rectal distension was increased in TNBS treated rats up to 21 d and resolved by day 28. Somatic hypersensitivity was also increased up to 14 d post TNBS induction of colitis. The expression of an inflammatory marker myeloperoxidase was significantly elevated in the intracellular granules of neutrophils in rat models following TNBS treatment compared to naïve rats. This confirmed the induction of inflammation in rats following TNBS treatment. VIP plasma concentration was significantly increased in rats following TNBS treatment as compared to naïve animals (P < 0.05). Likewise, the VIP gene expression from peripheral whole blood was significantly upregulated by 2.91-fold in IBS patients when compared to controls (P < 0.00001; 95%CI). VIP plasma protein was not significantly different when compared with controls (P = 0.193).

CONCLUSION

Alterations in VIP expression may play a role in IBS. Therefore, a better understanding of the physiology of VIP could lead to new therapeutics.

Authors+Show Affiliations

Arseima Y Del Valle-Pinero, LeeAnne B Sherwin, Wendy A Henderson, Digestive Disorders Unit, Biobehavioral Branch, Division of Intramural Research, National Institute of Nursing Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, United States.Arseima Y Del Valle-Pinero, LeeAnne B Sherwin, Wendy A Henderson, Digestive Disorders Unit, Biobehavioral Branch, Division of Intramural Research, National Institute of Nursing Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, United States.Arseima Y Del Valle-Pinero, LeeAnne B Sherwin, Wendy A Henderson, Digestive Disorders Unit, Biobehavioral Branch, Division of Intramural Research, National Institute of Nursing Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, United States.Arseima Y Del Valle-Pinero, LeeAnne B Sherwin, Wendy A Henderson, Digestive Disorders Unit, Biobehavioral Branch, Division of Intramural Research, National Institute of Nursing Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, United States.Arseima Y Del Valle-Pinero, LeeAnne B Sherwin, Wendy A Henderson, Digestive Disorders Unit, Biobehavioral Branch, Division of Intramural Research, National Institute of Nursing Research, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, United States.

Pub Type(s)

Journal Article
Research Support, N.I.H., Extramural
Research Support, N.I.H., Intramural
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25574088

Citation

Del Valle-Pinero, Arseima Y., et al. "Altered Vasoactive Intestinal Peptides Expression in Irritable Bowel Syndrome Patients and Rats With Trinitrobenzene Sulfonic Acid-induced Colitis." World Journal of Gastroenterology, vol. 21, no. 1, 2015, pp. 155-63.
Del Valle-Pinero AY, Sherwin LB, Anderson EM, et al. Altered vasoactive intestinal peptides expression in irritable bowel syndrome patients and rats with trinitrobenzene sulfonic acid-induced colitis. World J Gastroenterol. 2015;21(1):155-63.
Del Valle-Pinero, A. Y., Sherwin, L. B., Anderson, E. M., Caudle, R. M., & Henderson, W. A. (2015). Altered vasoactive intestinal peptides expression in irritable bowel syndrome patients and rats with trinitrobenzene sulfonic acid-induced colitis. World Journal of Gastroenterology, 21(1), pp. 155-63. doi:10.3748/wjg.v21.i1.155.
Del Valle-Pinero AY, et al. Altered Vasoactive Intestinal Peptides Expression in Irritable Bowel Syndrome Patients and Rats With Trinitrobenzene Sulfonic Acid-induced Colitis. World J Gastroenterol. 2015 Jan 7;21(1):155-63. PubMed PMID: 25574088.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Altered vasoactive intestinal peptides expression in irritable bowel syndrome patients and rats with trinitrobenzene sulfonic acid-induced colitis. AU - Del Valle-Pinero,Arseima Y, AU - Sherwin,LeeAnne B, AU - Anderson,Ethan M, AU - Caudle,Robert M, AU - Henderson,Wendy A, PY - 2014/09/09/received PY - 2014/10/29/revised PY - 2014/11/18/accepted PY - 2015/1/10/entrez PY - 2015/1/13/pubmed PY - 2015/9/15/medline KW - Gene expression KW - Irritable bowel syndrome KW - PCR arrays KW - Trinitrobenzene sulfonic acid KW - Vasoactive intestinal peptide SP - 155 EP - 63 JF - World journal of gastroenterology JO - World J. Gastroenterol. VL - 21 IS - 1 N2 - AIM: To investigate the vasoactive intestinal peptides (VIP) expression in irritable bowel syndrome (IBS) and trinitrobenzene sulfonic acid (TNBS) induced colitis. METHODS: The VIP gene expression and protein plasma levels were measured in adult participants (45.8% male) who met Rome III criteria for IBS for longer than 6 mo and in a rat model of colitis as induced by TNBS. Plasma and colons were collected from naïve and inflamed rats. Markers assessing inflammation (i.e., weight changes and myeloperoxidase levels) were assessed on days 2, 7, 14 and 28 and compared to controls. Visceral hypersensitivity of the rats was assessed with colo-rectal distension and mechanical threshold testing on hind paws. IBS patients (n = 12) were age, gender, race, and BMI-matched with healthy controls (n = 12). Peripheral whole blood and plasma from fasting participants was collected and VIP plasma levels were assayed using a VIP peptide-enzyme immunoassay. Human gene expression of VIP was analyzed using a custom PCR array. RESULTS: TNBS induced colitis in the rats was confirmed with weight loss (13.7 ± 3.2 g) and increased myeloperoxidase activity. Visceral hypersensitivity to colo-rectal distension was increased in TNBS treated rats up to 21 d and resolved by day 28. Somatic hypersensitivity was also increased up to 14 d post TNBS induction of colitis. The expression of an inflammatory marker myeloperoxidase was significantly elevated in the intracellular granules of neutrophils in rat models following TNBS treatment compared to naïve rats. This confirmed the induction of inflammation in rats following TNBS treatment. VIP plasma concentration was significantly increased in rats following TNBS treatment as compared to naïve animals (P < 0.05). Likewise, the VIP gene expression from peripheral whole blood was significantly upregulated by 2.91-fold in IBS patients when compared to controls (P < 0.00001; 95%CI). VIP plasma protein was not significantly different when compared with controls (P = 0.193). CONCLUSION: Alterations in VIP expression may play a role in IBS. Therefore, a better understanding of the physiology of VIP could lead to new therapeutics. SN - 2219-2840 UR - https://www.unboundmedicine.com/medline/citation/25574088/Altered_vasoactive_intestinal_peptides_expression_in_irritable_bowel_syndrome_patients_and_rats_with_trinitrobenzene_sulfonic_acid_induced_colitis_ L2 - http://www.wjgnet.com/1007-9327/full/v21/i1/155.htm DB - PRIME DP - Unbound Medicine ER -