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Laparotomy and intraoperative enteroscopy for obscure gastrointestinal bleeding before and after the era of video capsule endoscopy and deep enteroscopy: A tertiary center experience.

Manatsathit W, Khrucharoen U, Jensen DM, Hines OJ, Kovacs T, Ohning G, Jutabha R, Ghassemi K, Dulai GS, Machicado G.

Am J Surg. 2018 Apr;215(4):603-609. doi: 10.1016/j.amjsurg.2017.05.018. Epub 2017 Jun 19.


Doppler Endoscopic Probe Monitoring of Blood Flow Improves Risk Stratification and Outcomes of Patients With Severe Nonvariceal Upper Gastrointestinal Hemorrhage.

Jensen DM, Kovacs TOG, Ohning GV, Ghassemi K, Machicado GA, Dulai GS, Sedarat A, Jutabha R, Gornbein J.

Gastroenterology. 2017 May;152(6):1310-1318.e1. doi: 10.1053/j.gastro.2017.01.042. Epub 2017 Feb 4.


Origin, Clinical Characteristics and 30-Day Outcomes of Severe Hematochezia in Cirrhotics and Non-cirrhotics.

Camus M, Khungar V, Jensen DM, Ohning GV, Kovacs TO, Jutabha R, Ghassemi KA, Machicado GA, Dulai GS.

Dig Dis Sci. 2016 Sep;61(9):2732-40. doi: 10.1007/s10620-016-4198-y. Epub 2016 Jun 10.


Doppler endoscopic probe as a guide to risk stratification and definitive hemostasis of peptic ulcer bleeding.

Jensen DM, Ohning GV, Kovacs TO, Ghassemi KA, Jutabha R, Dulai GS, Machicado GA.

Gastrointest Endosc. 2016 Jan;83(1):129-36. doi: 10.1016/j.gie.2015.07.012. Epub 2015 Aug 28.


Natural history of definitive diverticular hemorrhage based on stigmata of recent hemorrhage and colonoscopic Doppler blood flow monitoring for risk stratification and definitive hemostasis.

Jensen DM, Ohning GV, Kovacs TO, Jutabha R, Ghassemi K, Dulai GS, Machicado GA.

Gastrointest Endosc. 2016 Feb;83(2):416-23. doi: 10.1016/j.gie.2015.07.033. Epub 2015 Jul 31.


Comparison of Three Risk Scores to Predict Outcomes of Severe Lower Gastrointestinal Bleeding.

Camus M, Jensen DM, Ohning GV, Kovacs TO, Jutabha R, Ghassemi KA, Machicado GA, Dulai GS, Jensen ME, Gornbein JA.

J Clin Gastroenterol. 2016 Jan;50(1):52-8. doi: 10.1097/MCG.0000000000000286.


Epistaxis in end stage liver disease masquerading as severe upper gastrointestinal hemorrhage.

Camus M, Jensen DM, Matthews JD, Ohning GV, Kovacs TO, Jutabha R, Ghassemi KA, Machicado GA, Dulai GS.

World J Gastroenterol. 2014 Oct 14;20(38):13993-8. doi: 10.3748/wjg.v20.i38.13993.


The water exchange method for colonoscopy-effect of coaching.

Leung F, Cheung R, Fan R, Fischer L, Friedland S, Ho S, Hsieh Y, Hung I, Li M, Matsui S, McQuaid K, Ohning G, Ojuri A, Sato T, Shergill A, Shoham M, Simons T, Walter M, Yen A.

J Interv Gastroenterol. 2012 Jul;2(3):122-125. Epub 2012 Jul 1.


Severe upper gastrointestinal hemorrhage from linear gastric ulcers in large hiatal hernias: a large prospective case series of Cameron ulcers.

Camus M, Jensen DM, Ohning GV, Kovacs TO, Ghassemi KA, Jutabha R, Machicado GA, Dulai GS, Hines OJ.

Endoscopy. 2013;45(5):397-400. doi: 10.1055/s-0032-1326294. Epub 2013 Apr 24.


Intestinal mucins: the first line of defense.

Ohning GV.

J Clin Gastroenterol. 2013 Feb;47(2):104-5. doi: 10.1097/MCG.0b013e3182713185. No abstract available.


Adenoma detection rate is necessary but insufficient for distinguishing high versus low endoscopist performance.

Wang HS, Pisegna J, Modi R, Liang LJ, Atia M, Nguyen M, Cohen H, Ohning G, van Oijen M, Spiegel BM.

Gastrointest Endosc. 2013 Jan;77(1):71-8. doi: 10.1016/j.gie.2012.08.038.


Evidence for alterations in central noradrenergic signaling in irritable bowel syndrome.

Berman S, Suyenobu B, Naliboff BD, Bueller J, Stains J, Wong H, Mandelkern M, Fitzgerald L, Ohning G, Gupta A, Labus JS, Tillisch K, Mayer EA.

Neuroimage. 2012 Dec;63(4):1854-63. doi: 10.1016/j.neuroimage.2012.08.028. Epub 2012 Aug 21.


CCK-8 and CCK-58 differ in their effects on nocturnal solid meal pattern in undisturbed rats.

Goebel-Stengel M, Stengel A, Wang L, Ohning G, Taché Y, Reeve JR Jr.

Am J Physiol Regul Integr Comp Physiol. 2012 Oct 15;303(8):R850-60. doi: 10.1152/ajpregu.00365.2011. Epub 2012 Aug 8.


Comparison of CRF-immunoreactive neurons distribution in mouse and rat brains and selective induction of Fos in rat hypothalamic CRF neurons by abdominal surgery.

Wang L, Goebel-Stengel M, Stengel A, Wu SV, Ohning G, Taché Y.

Brain Res. 2011 Sep 30;1415:34-46. doi: 10.1016/j.brainres.2011.07.024. Epub 2011 Jul 23.


Ischemic colitis as a cause of severe hematochezia: risk factors and outcomes compared with other colon diagnoses.

Chavalitdhamrong D, Jensen DM, Kovacs TO, Jutabha R, Dulai G, Ohning G, Machicado GA.

Gastrointest Endosc. 2011 Oct;74(4):852-7. doi: 10.1016/j.gie.2011.05.039. Epub 2011 Aug 12.


Activation of Type 1 CRH receptor isoforms induces serotonin release from human carcinoid BON-1N cells: an enterochromaffin cell model.

Wu SV, Yuan PQ, Lai J, Wong K, Chen MC, Ohning GV, Taché Y.

Endocrinology. 2011 Jan;152(1):126-37. doi: 10.1210/en.2010-0997. Epub 2010 Dec 1.


PAC1 deficiency in a murine model induces gastric mucosa hypertrophy and higher basal gastric acid output.

Lu Y, Germano P, Ohning GV, Vu JP, Pisegna JR.

J Mol Neurosci. 2011 Jan;43(1):76-84. doi: 10.1007/s12031-010-9440-z. Epub 2010 Sep 4.


Childhood trauma is associated with hypothalamic-pituitary-adrenal axis responsiveness in irritable bowel syndrome.

Videlock EJ, Adeyemo M, Licudine A, Hirano M, Ohning G, Mayer M, Mayer EA, Chang L.

Gastroenterology. 2009 Dec;137(6):1954-62. doi: 10.1053/j.gastro.2009.08.058. Epub 2009 Sep 6.


Guanylate cyclase C-mediated antinociceptive effects of linaclotide in rodent models of visceral pain.

Eutamene H, Bradesi S, Larauche M, Theodorou V, Beaufrand C, Ohning G, Fioramonti J, Cohen M, Bryant AP, Kurtz C, Currie MG, Mayer EA, Bueno L.

Neurogastroenterol Motil. 2010 Mar;22(3):312-e84. doi: 10.1111/j.1365-2982.2009.01385.x. Epub 2009 Aug 25.


Duodenal bulb mucosa with hypertrophic gastric oxyntic heterotopia in patients with zollinger ellison syndrome.

Kohan E, Oh D, Wang H, Hazany S, Ohning G, Pisegna JR.

Diagn Ther Endosc. 2009;2009:298381. doi: 10.1155/2009/298381. Epub 2009 Jul 1.


Definitive therapy for internal hemorrhoids--new opportunities and options.

Ohning GV, Machicado GA, Jensen DM.

Rev Gastroenterol Disord. 2009 Winter;9(1):16-26. Review.


Comparative efficacy of rabeprazole and pantoprazole in the control of nocturnal Acid output and intragastric acidity.

Wang HS, Oh DS, Anderson A, Nieto J, Tien P, Ohning G, Pisegna JR.

Gut Liver. 2008 Jun;2(1):30-8. doi: 10.5009/gnl.2008.2.1.30. Epub 2008 Jun 30.


Reduced brainstem inhibition during anticipated pelvic visceral pain correlates with enhanced brain response to the visceral stimulus in women with irritable bowel syndrome.

Berman SM, Naliboff BD, Suyenobu B, Labus JS, Stains J, Ohning G, Kilpatrick L, Bueller JA, Ruby K, Jarcho J, Mayer EA.

J Neurosci. 2008 Jan 9;28(2):349-59. doi: 10.1523/JNEUROSCI.2500-07.2008.


Elevated serum ghrelin exerts an orexigenic effect that may maintain body mass index in patients with metastatic neuroendocrine tumors.

Wang HS, Oh DS, Ohning GV, Pisegna JR.

J Mol Neurosci. 2007;33(3):225-31. Epub 2007 Apr 17.


Cyto-reduction of neuroendocrine tumours using Sandostatin LAR in combination with Infergen: results of a case series.

Wang HS, Oh DS, Ohning GV, Pisegna JR.

J Pharm Pharmacol. 2006 Dec;58(12):1623-8.


Validation of a new endoscopic technique to assess acid output in Zollinger-Ellison syndrome.

Oh DS, Wang HS, Ohning GV, Pisegna JR.

Clin Gastroenterol Hepatol. 2006 Dec;4(12):1467-73. Epub 2006 Nov 13.


The role of neurokinin 1 receptors in the maintenance of visceral hyperalgesia induced by repeated stress in rats.

Bradesi S, Kokkotou E, Simeonidis S, Patierno S, Ennes HS, Mittal Y, McRoberts JA, Ohning G, McLean P, Marvizon JC, Sternini C, Pothoulakis C, Mayer EA.

Gastroenterology. 2006 May;130(6):1729-42.


The neuropeptide tyrosine Y1R is expressed in interneurons and projection neurons in the dorsal horn and area X of the rat spinal cord.

Brumovsky P, Hofstetter C, Olson L, Ohning G, Villar M, Hökfelt T.

Neuroscience. 2006;138(4):1361-76. Epub 2006 Jan 31.


Corticotropin-releasing factor receptor 1 mediates acute and delayed stress-induced visceral hyperalgesia in maternally separated Long-Evans rats.

Schwetz I, McRoberts JA, Coutinho SV, Bradesi S, Gale G, Fanselow M, Million M, Ohning G, Taché Y, Plotsky PM, Mayer EA.

Am J Physiol Gastrointest Liver Physiol. 2005 Oct;289(4):G704-12. Epub 2005 Jun 30.


PACAP regulation of secretion and proliferation of pure populations of gastric ECL cells.

Oh DS, Lieu SN, Yamaguchi DJ, Tachiki K, Lambrecht N, Ohning GV, Sachs G, Germano PM, Pisegna JR.

J Mol Neurosci. 2005;26(1):85-97.


Rabeprazole controls GERD symptoms in a patient for whom treatment with lansoprazole failed: first report of "cluster GERD.".

Oh DS, Ohning GV, Pisegna JR.

Dig Dis Sci. 2005 May;50(5):853-7. No abstract available.


Central vagal stimulation activates enteric cholinergic neurons in the stomach and VIP neurons in the duodenum in conscious rats.

Yuan PQ, Kimura H, Million M, Bellier JP, Wang L, Ohning GV, Taché Y.

Peptides. 2005 Apr;26(4):653-64. Epub 2005 Jan 6.


Repeated exposure to water avoidance stress in rats: a new model for sustained visceral hyperalgesia.

Bradesi S, Schwetz I, Ennes HS, Lamy CM, Ohning G, Fanselow M, Pothoulakis C, McRoberts JA, Mayer EA.

Am J Physiol Gastrointest Liver Physiol. 2005 Jul;289(1):G42-53. Epub 2005 Mar 3.


Reflux laryngitis in a patient with Zollinger Ellison syndrome and the role of epidermal growth factor.

Weinberg BM, Oh DS, Ohning GV, Pisegna JR.

Dig Dis Sci. 2004 Apr;49(4):693-6. No abstract available.


Anti-hyperalgesic effect of octreotide in patients with irritable bowel syndrome.

Schwetz I, Naliboff B, Munakata J, Lembo T, Chang L, Matin K, Ohning G, Mayer EA.

Aliment Pharmacol Ther. 2004 Jan 1;19(1):123-31.


Differential profile of CRF receptor distribution in the rat stomach and duodenum assessed by newly developed CRF receptor antibodies.

Chatzaki E, Murphy BJ, Wang L, Million M, Ohning GV, Crowe PD, Petroski R, Taché Y, Grigoriadis DE.

J Neurochem. 2004 Jan;88(1):1-11.


Rapid and long-term alterations of hippocampal GABAB receptors in a mouse model of temporal lobe epilepsy.

Straessle A, Loup F, Arabadzisz D, Ohning GV, Fritschy JM.

Eur J Neurosci. 2003 Oct;18(8):2213-26.


Delayed stress-induced colonic hypersensitivity in male Wistar rats: role of neurokinin-1 and corticotropin-releasing factor-1 receptors.

Schwetz I, Bradesi S, McRoberts JA, Sablad M, Miller JC, Zhou H, Ohning G, Mayer EA.

Am J Physiol Gastrointest Liver Physiol. 2004 Apr;286(4):G683-91. Epub 2003 Nov 13.


Rabeprazole is superior to omeprazole for the inhibition of peptone meal-stimulated gastric acid secretion in Helicobacter pylori-negative subjects.

Ohning GV, Walsh JH, Pisegna JR, Murthy A, Barth J, Kovacs TO.

Aliment Pharmacol Ther. 2003 May 1;17(9):1109-14.


Cephalic phase of acid secretion involves activation of medullary TRH receptor subtype 1 in rats.

Martínez V, Barrachina MD, Ohning G, Taché Y.

Am J Physiol Gastrointest Liver Physiol. 2002 Dec;283(6):G1310-9. Epub 2002 Aug 28.


The novel use of an intravenous proton pump inhibitor in a patient with short bowel syndrome.

Tang SJ, Nieto JM, Jensen DM, Ohning GV, Pisegna JR.

J Clin Gastroenterol. 2002 Jan;34(1):62-3.


Role of PACAP1 receptor in regulation of ECL cells and gastric acid secretion by pituitary adenylate cyclase activating peptide.

Pisegna JR, Ohning GV, Athmann C, Zeng N, Walsh JH, Sachs G.

Ann N Y Acad Sci. 2000;921:233-41.


Failure of a motilin receptor agonist (ABT-229) to relieve the symptoms of functional dyspepsia in patients with and without delayed gastric emptying: a randomized double-blind placebo-controlled trial.

Talley NJ, Verlinden M, Snape W, Beker JA, Ducrotte P, Dettmer A, Brinkhoff H, Eaker E, Ohning G, Miner PB, Mathias JR, Fumagalli I, Staessen D, Mack RJ.

Aliment Pharmacol Ther. 2000 Dec;14(12):1653-61.


Peripheral PYY inhibits intracisternal TRH-induced gastric acid secretion by acting in the brain.

Yang H, Kawakubo K, Wong H, Ohning G, Walsh J, Taché Y.

Am J Physiol Gastrointest Liver Physiol. 2000 Sep;279(3):G575-81.


Rabeprazole produces rapid, potent, and long-acting inhibition of gastric acid secretion in subjects with Helicobacter pylori infection.

Ohning GV, Barbuti RC, Kovacs TO, Sytnik B, Humphries TJ, Walsh JH.

Aliment Pharmacol Ther. 2000 Jun;14(6):701-8.


PACAP type I receptor activation regulates ECL cells and gastric acid secretion.

Zeng N, Athmann C, Kang T, Lyu RM, Walsh JH, Ohning GV, Sachs G, Pisegna JR.

J Clin Invest. 1999 Nov;104(10):1383-91.


Inhibition of pentagastrin-induced gastric acid secretion by intravenous pantoprazole: a dose-response study.

Pisegna JR, Martin P, McKeand W, Ohning G, Walsh JH, Paul J.

Am J Gastroenterol. 1999 Oct;94(10):2874-80.


Intracisternal TRH analog increases gastrin release and corpus histidine decarboxylase activity in rats.

Song M, Yang H, Walsh JH, Ohning G, Wong H, Taché Y.

Am J Physiol. 1999 Apr;276(4 Pt 1):G901-8.


Immunolocalization of gastrin-dependent histidine decarboxylase activity in rat gastric mucosa during feeding.

Ohning GV, Song M, Wong HC, Wu SV, Walsh JH.

Am J Physiol. 1998 Oct;275(4 Pt 1):G660-7.


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