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Pant C, Madonia P, Minocha A, Manas K, Jordan P, Bass P. Laboratory Markers as Predictors of Mortality in Patients With Clostridium difficile Infection. J Investig Med 2015; 58:43-5. [DOI: 10.2310/jim.0b013e3181bca525] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Hosseini-Carroll P, Mutyala M, Seth A, Nageeb S, Soliman D, Boktor M, Sheth A, Chapman J, Morris J, Jordan P, Manas K, Becker F, Alexander JS. Pregnancy and inflammatory bowel diseases: Current perspectives, risks and patient management. World J Gastrointest Pharmacol Ther 2015; 6:156-171. [PMID: 26558150 PMCID: PMC4635156 DOI: 10.4292/wjgpt.v6.i4.156] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 06/30/2015] [Accepted: 09/07/2015] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel diseases (IBD) are chronic idiopathic inflammatory conditions characterized by relapsing and remitting episodes of inflammation which can affect several different regions of the gastrointestinal tract, but also shows extra-intestinal manifestations. IBD is most frequently diagnosed during peak female reproductive years, with 25% of women with IBD conceiving after their diagnosis. While IBD therapy has improved dramatically with enhanced surveillance and more abundant and powerful treatment options, IBD disease can have important effects on pregnancy and presents several challenges for maintaining optimal outcomes for mothers with IBD and the developing fetus/neonate. Women with IBD, the medical team treating them (both gastroenterologists and obstetricians/gynecologists) must often make highly complicated choices regarding conception, pregnancy, and post-natal care (particularly breastfeeding) related to their choice of treatment options at different phases of pregnancy as well as post-partum. This current review discusses current concerns and recommendations for pregnancy during IBD and is intended for gastroenterologists, general practitioners and IBD patients intending to become, (or already) pregnant, and their families. We have addressed patterns of IBD inheritance, effects of IBD on fertility and conception (in both men and women), the effects of IBD disease activity on maintenance of pregnancy and outcomes, risks of diagnostic procedures during pregnancy and potential risks and complications associated with different classes of IBD therapeutics. We also have evaluated the clinical experience using “top-down” care with biologics, which is currently the standard care at our institution. Post-partum care and breastfeeding recommendations are also addressed.
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Suryawala K, Soliman D, Mutyala M, Nageeb S, Boktor M, Seth A, Aravantagi A, Sheth A, Morris J, Jordan P, Manas K, Cvek U, Trutschl M, Becker F, Alexander J. Gastric cancer in women: A regional health-center seven year retrospective study. World J Gastroenterol 2015; 21:7805-7813. [PMID: 26167080 PMCID: PMC4491967 DOI: 10.3748/wjg.v21.i25.7805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2014] [Revised: 03/11/2015] [Accepted: 04/03/2015] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate whether regional geography influences ethnic and gender trends for the development of gastric cancer (GC).
METHODS: This retrospective analysis of the INVISION patient database at Louisiana State University Health Sciences Center-Shreveport (LSUHSC-S), a southern United States regional hospital, was performed from 2005-2011. Using the international statistical classification of diseases 9 (ICD-9), inpatient, day surgery outpatient, and emergency outpatient diagnosis codes entered into medical records were used to identify GC patients. For each study year, the patients were evaluated for age, ethnicity, and gender, and each patient was counted only once throughout the study. Subsequent patient encounters were counted as visits and separated by inpatient and clinic visits. Complex or severe disease may require more frequent and intensive clinical management; therefore, we evaluated annual clinic visits as “surrogate markers” of disease severity. Finally, we studied the primary diagnosis for Helicobacter pylori (H. pylori) infection (ICD-9 code 41.86) as an additional factor that might increase the risk of GC.
RESULTS: A total of 285 patients were diagnosed with GC at LSUHSC-S between 2005 and 2011. African Americans (181 patients, 89 males and 92 females, 63.5% of total patients) had significantly higher frequencies of GC diagnosis compared with non-Hispanic whites (104 patients, 54 males and 50 females, 36.5% of total patients), at a ratio of 1.74 (P = 0.002). Within each ethnic group, men and women were diagnosed at approximately equal annual rates. Our findings differed significantly from United States national trends, which found that African American females and white females had lower risks for GC than their corresponding male counterparts. The United States national trend between 2005 and 2011 showed that African Americans males had a higher incidence of GC, with an annual mean (per 100000) of 16.31 ± 0.76 compared with white males (9 ± 0.1, P < 0.001), African American females (8.7 ± 0.34, P < 0.001) and white females (4.05 ± 0.07, P < 0.001). Among the GC patients, the number of clinic visits was highest among African American males (195.1 ± 28.1), who had significantly more clinic visits than African Americans females (123 ± 13.02, P < 0.05), white males (41.57 ± 4.74, P < 0.001) and white females (35 ± 8.9, P < 0.001). Similar trends were found for inpatient visits, with an annual mean of 11.43 ± 1.5 for African American males, followed by African American females (7.29 ± 1.36), white males (2.57 ± 0.69) and white females (1.57 ± 0.612). African American males had significantly more inpatient visits than white males (P < 0.001), and African American females had more inpatient visits than white females (P < 0.01). African American patients showed the highest frequency of H. pylori positive status, with approximately 72% vs 28% for the white patients.
CONCLUSION: Increase in GC diagnoses among women at LSUHSC-S is significantly higher than United States national averages, suggesting local geographic and socioeconomic influences may alter GC disease course.
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Seth A, Rajpal S, Saigal T, Bienvenu J, Sheth A, Alexander JS, Boktor M, Manas K, Morris JD, Jordan PA. Diabetic Ketoacidosis-induced Hypertriglyceridemic Acute Pancreatitis Treated with Plasmapheresis-Recipe for Biochemical Disaster Management. Clin Med Insights Gastroenterol 2014; 7:51-3. [PMID: 25342924 PMCID: PMC4206354 DOI: 10.4137/cgast.s18557] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2014] [Revised: 08/28/2014] [Accepted: 08/31/2014] [Indexed: 12/18/2022]
Abstract
Diabetic ketoacidosis (DKA)-induced hypertriglyceridemia causing pancreatitis is an interesting phenomenon that has rarely been reported in literature. Plasmapharesis is a well known treatment modality for hypertriglyceridemia-induced pancreatitis. We report a patient with DKA-induced hypertriglyceridemic acute pancreatitis treated successfully with plasmapharesis.
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Affiliation(s)
- Abhishek Seth
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Saurabh Rajpal
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Taru Saigal
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - John Bienvenu
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Ankur Sheth
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Jonathan S Alexander
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA. ; Department of Molecular and Cellular Physiology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Moheb Boktor
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Kenneth Manas
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - James D Morris
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
| | - Paul A Jordan
- Department of Medicine, Section of Gastroenterology, LSU Health Sciences Center, Shreveport, LA, USA
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Vesa TS, Hosseini-Carroll P, Manas K. Diverticular hemorrhage of the appendix. Gastroenterol Hepatol (N Y) 2014; 10:394-395. [PMID: 25013394 PMCID: PMC4080878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Affiliation(s)
- Telciane S Vesa
- Department of Medicine, Division of Gastroenterology and Hepatology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
| | - Pegah Hosseini-Carroll
- Department of Medicine, Division of Gastroenterology and Hepatology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
| | - Kenneth Manas
- Department of Medicine, Division of Gastroenterology and Hepatology, Louisiana State University Health Sciences Center, Shreveport, Louisiana
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Monceaux CP, Testerman TL, Boktor M, Jordan P, Adegboyega P, McGee DJ, Jennings MH, Parker CP, Gupta S, Yi P, Ganta VC, Galous H, Manas K, Alexander JS. <i>Helicobacter</i> infection decreases basal colon inflammation, but increases disease activity in experimental IBD. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojgas.2013.33029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Patel M, Olinde J, Tatum A, Ganta CV, Cromer WE, Sheth AR, Jennings MH, Mathis JM, Testerman T, Jordan PA, Manas K, Monceaux CP, Alexander JS. Gut sterilization in experimental colitis leukocyte mediated colon injury, and effects on angiogenesis/lymphangiogenesis. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/ojgas.2013.31003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nandwani V, Ford C, Cantwell S, Sheth A, Manas K. Indwelling Catheter Fecal Diversion System as Cause of Severe Rectal Bleeding. Chest 2010. [DOI: 10.1378/chest.9355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Veluswamy H, Suryawala K, Sheth A, Wells S, Salvatierra E, Cromer W, Chaitanya GV, Painter A, Patel M, Manas K, Zwank E, Boktor M, Baig K, Datti B, Mathis MJ, Minagar A, Jordan PA, Alexander JS. African-American inflammatory bowel disease in a Southern U.S. health center. BMC Gastroenterol 2010; 10:104. [PMID: 20828408 PMCID: PMC2944337 DOI: 10.1186/1471-230x-10-104] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2010] [Accepted: 09/09/2010] [Indexed: 12/15/2022] Open
Abstract
Background Inflammatory Bowel Diseases (IBD) remain significant health problems in the US and worldwide. IBD is most often associated with eastern European ancestry, and is less frequently reported in other populations of African origin e.g. African Americans ('AAs'). Whether AAs represent an important population with IBD in the US remains unclear since few studies have investigated IBD in communities with a majority representation of AA patients. The Louisiana State University Health Sciences Center in Shreveport (LSUHSC-S) is a tertiary care medical center, with a patient base composed of 58% AA and 39% Caucasian (W), ideal for evaluating racial (AA vs. W) as well and gender (M vs. F) influences on IBD. Methods In this retrospective study, we evaluated 951 visits to LSUHSC-S for IBD (between 2000 to 2008) using non-identified patient information based on ICD-9 medical record coding (Crohn's disease 'CD'-555.0- 555.9 and ulcerative colitis 'UC'-556.0-556.9). Results Overall, there were more cases of CD seen than UC. UC and CD affected similar ratios of AA and Caucasian males (M) and females (F) with a rank order of WF > WM > AAF > AAM. Interestingly, in CD, we found that annual visits per person was the highest in AA M (10.7 ± 1.7); significantly higher (* -p < 0.05) than in WM (6.3 ± 1.0). Further, in CD, the female to male (F: M) ratio in AA was significantly higher (*- p < 0.05) (1.9 ± 0.2) than in Caucasians (F:M = 1.3 ± 0.1) suggesting a female dominance in AACD; no differences were seen in UC F: M ratios. Conclusion Although Caucasians still represent the greatest fraction of IBD (~64%), AAs with IBD made up >1/3 (36.4%) of annual IBD cases from 2000-2008 at LSUHSC-S. Further studies on genetic and environments risks for IBD risk in AAs are needed to understand differences in presentation and progression in AAs and other 'non-traditional' populations.
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Affiliation(s)
- Hemanth Veluswamy
- Dept of Molecular & Cellular Physiology, 1501 Kings Highway, Shreveport, LA, 71130-3932, USA
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Nader M, D'Agostino HB, Vea R, de Gregorio Ariza M, Zibari G, Manas K, Jordan P, Shi R. Biliary spills and collections: causes, diagnosis, and multidisciplinary management. J La State Med Soc 2009; 161:46-54. [PMID: 19278170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
PURPOSE To evaluate the role of image-guided percutaneous interventions in patients with bile leaks and bile collections managed by a multidisciplinary team. MATERIAL & METHODS Selection criteria included those patients from February 1999 to August 2007 who had bile leaks and bile collections in whom an image-guided procedure was performed. Ultrasound (US), computed tomography (CT), and nuclear medicine studies were used for diagnostic imaging. Patients were evaluated and managed in a multidisciplinary fashion by gastroenterologists, surgeons, and interventionists. Parameters measured in the study were drainage indications, cause and location of the biliary injury, location and size of bile collections, volume of fluid drained, fluid microbiology results, duration of catheterization, and patient outcome. Patients were followed up by the interventionist on daily rounds while inpatients and at the interventional clinic as outpatients. RESULTS There were 31 patients who underwent image-guided percutaneous interventions as part of the management of bile leaks and bile collections. Causes of biliary injuries were surgical procedures, 18 patients (laparoscopic cholecystectomy, 11 patients; hepatectomy, 7 patients); abdominal trauma, 8 patients; percutaneous biliary procedures, 3 patients; liver abscess, 1 patient; gallbladder rupture, 1 patient. Bile collections were localized in 23 patients and diffuse in 8 patients. Localized collections were extrahepatic in 17 patients and intrahepatic in 6 patients. The size of the bile collections ranged from 4 to 12 cm (mean, 8 cm) in maximum diameter. The volume of fluid drained ranged from 25 mL to 4300 mL (mean, 915 mL). Microbiology studies showed sterile bile in 24 patients and bacterial infections in 7 patients. Duration of catheterization ranged from 3 days to 202 days (mean, 36 days). Of the 31 patients, 28 (90%) were cured from their condition and 3 (10%) patients died. Image-guided percutaneous interventions were able to resolve bile leaks and bile collections in 24 (86%) patients while 4 (14%) required additional procedures (endoscopic, 3 patients; surgery, 1 patient). CONCLUSION Under multidisciplinary management, image-guided interventions are effective for resolution of most bile spills and collections. Additional endoscopic and surgical procedures are necessary when the percutaneous approach fails.
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Affiliation(s)
- Mathieu Nader
- Louisiana State University Health Sciences Center (LSUHSC), Shreveport, Louisiana, USA
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Abstract
Eosinophilic gastroenteritis (EG) is a rare gastrointestinal disorder of undetermined etiology and is manifest by eosinophilic infiltration of any area of gastrointestinal tract, most frequently stomach and small intestine. Peripheral eosinophilia is present in about 80% of patients. Definitive diagnosis requires histologic evidence of eosinophilic infiltration; which is usually patchy in distribution. Steroids are the mainstay of treatment. We present a case of 47-year-old man with abdominal pain, jaundice, and marked eosinophilia. Endoscopic retrograde cholangio-pancreatogram revealed a dilated common bile duct. There was biopsy proven eosinophilic infiltration in stomach, duodenum, gall bladder, and pancreas. Obstructive jaundice is an extremely rare manifestation of EG. This unusual case illustrates the wide variety of gastrointestinal manifestations caused by EG and emphasizes the importance of clinical suspicion and endoscopic mucosal biopsies in diagnosis of EG. This entity should be considered in the patients with chronic and relapsing gastrointestinal symptoms.
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Affiliation(s)
- Ankur Sheth
- Department of Internal Medicine, Louisiana State University Health Sciences Center, Shreveport, USA.
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Reddymasu S, Bahta E, Levine S, Manas K, Slay LE. Elevated lipase and diabetic ketoacidosis associated with aripiprazole. JOP 2006; 7:303-5. [PMID: 16685111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
CONTEXT Atypical antipsychotic agents are associated with diabetes mellitus and pancreatitis. Aripiprazole, a new antipsychotic, has never been implicated to cause either diabetes mellitus or pancreatitis. We present a patient who developed diabetes mellitus after being started on aripiprazole. CASE REPORT A 33 year-old male with schizophrenia presented with fatigue, dyspepsia and epigastric pain. Patient was found to have hyperglycemia, diabetic ketoacidosis, and hyperlipasemia. Imaging studies of the pancreas were normal. Patient was started on aripiprazole treatment 18 months prior to this episode and had experienced progressive weight gain since then. Work up for other causes of pancreatitis was negative. CONCLUSIONS Diabetes mellitus in this patient was probably a complication of aripiprazole due to progressive weight gain. In the absence of radiologic evidence of pancreatitis, hyperlipasemia was probably secondary to diabetic ketoacidosis. Possible causes of hyperlipasemia and its significance in diabetic ketoacidosis are discussed.
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Affiliation(s)
- Savio Reddymasu
- Department of Medicine, LSU Health Sciences Center, Shreveport, Louisiana 71115, USA
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Sasaki M, Bharwani S, Jordan P, Joh T, Manas K, Warren A, Harada H, Carter P, Elrod JW, Wolcott M, Grisham MB, Alexander JS. The 3-hydroxy-3-methylglutaryl-CoA reductase inhibitor pravastatin reduces disease activity and inflammation in dextran-sulfate induced colitis. J Pharmacol Exp Ther 2003; 305:78-85. [PMID: 12649355 DOI: 10.1124/jpet.102.044099] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
The dextran sulfate (DSS) model of colitis causes intestinal injury sharing many characteristics with inflammatory bowel disease, e.g., leukocyte infiltration, loss of gut epithelial barrier, and cachexia. These symptoms are partly mediated by entrapped leukocytes binding to multiple endothelial adhesion molecules (MAdCAM-1, VCAM-1, ICAM-1, and E-selectin). Pravastatin, an 3-hydroxy-3-methylglutaryl (HMG)-CoA reductase inhibitor, has anti-inflammatory potency in certain inflammation models; therefore, in this study, we measured the effects of pravastatin in DSS-induced colitis. The administration of pravastatin (1 mg/kg) relieved DSS-induced cachexia, hematochezia, and intestinal epithelial permeability, with no effect on serum cholesterol. Histopathologically, pravastatin prevented leukocyte infiltration and gut injury. Pravastatin also blocked the mucosal expression of MAdCAM-1. DSS treatment promoted mucosal endothelial nitric-oxide synthase (eNOS) mRNA degradation, an effect that was blocked by pravastatin. Importantly, the protective effects of pravastatin in DSS-induced colitis were not found in eNOS-deficient mice. Our results demonstrate that HMG-CoA reductase inhibitors preserve intestinal integrity in colitis, most likely via increased eNOS expression and activity, independent of cholesterol metabolism.
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Affiliation(s)
- Makoto Sasaki
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana 71130-3932, USA
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Oshima T, Pavlick K, Grisham MB, Jordan P, Manas K, Joh T, Itoh M, Alexander JS. Glucocorticoids and IL-10, but not 6-MP, 5-ASA or sulfasalazine block endothelial expression of MAdCAM-1: implications for inflammatory bowel disease therapy. Aliment Pharmacol Ther 2001; 15:1211-8. [PMID: 11472325 DOI: 10.1046/j.1365-2036.2001.01048.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Enhanced MAdCAM-1 (mucosal addressin cell adhesion molecule-1) expression is associated with the aetiology of inflammatory bowel disease, but little is known about MAdCAM-1: regulation, or how inflammatory bowel disease therapies modulate MAdCAM-1. AIM To examine how agents currently used to treat inflammatory bowel disease affect MAdCAM-1: induced by tnf-alpha in an in vitro model of inflammatory bowel disease. METHODS Endothelial monolayers were pretreated with dexamethasone (DEX): 5-aminosalicylic acid (5-ASA), 6-mercaptopurine (6-MP), sulfasalazine or interleukin-10: (IL-10: prior to TNF-alpha (20 ng/mL), and MAdCAM-1: measured by Western blotting, RT-PCR, EMSA and lymphocyte adhesion assays. RESULTS MAdCAM-1: was induced dose- and time-dependently by TNF-alpha on endothelial cells. Either dexamethasone or IL-10: reduced TNF-alpha-induced MAdCAM-1: protein, mRNA and lymphocyte adhesion. However, neither 5-ASA, sulfasalazine nor 6-MP blocked MAdCAM-1 induction. CONCLUSIONS Our data indicate that dexamethasone or IL-10 can exert therapeutic activity in inflammatory bowel disease through MAdCAM-1 inhibition. 5-ASA, sulfasalazine and 6-MP, while beneficial in inflammatory bowel disease, do not directly control MAdCAM-1, and are beneficial through inhibition of other inflammatory processes.
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Affiliation(s)
- T Oshima
- Department of Molecular and Cellular Physiology, Louisiana State University Health Sciences Center, Shreveport, Louisiana, USA
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Oshima T, Jordan P, Grisham MB, Alexander JS, Jennings M, Sasaki M, Manas K. TNF-alpha induced endothelial MAdCAM-1 expression is regulated by exogenous, not endogenous nitric oxide. BMC Gastroenterol 2001; 1:5. [PMID: 11481030 PMCID: PMC35355 DOI: 10.1186/1471-230x-1-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2001] [Accepted: 07/12/2001] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND MAdCAM-1 is an adhesion molecule expressed in Peyer's patches and lymphoid tissues which is mobilized by cytokines like TNF-alpha and is a major determinant of lymphocyte trafficking to the gut in human inflammatory bowel disease (IBD). It has been suggested that both reactive oxygen and nitrogen metabolites participate in regulating adhesion molecule expression in response to TNF-alpha. METHODS To examine how exogenous and endogenous sources of NO modulate MAdCAM-1 induction by TNF-alpha, we pre-treated mouse lymphatic endothelial cells with either long or short acting NO donors prior to TNF-alpha-stimulation, and measured MAdCAM-1 induction at 24 h. RESULTS AND DISCUSSION DETA-NO, a long-acting NO donor, and SperNO, a rapid releasing NO donor both inhibited TNF-alpha-stimulated MAdCAM-1 expression in a concentration dependent manner. Both NO donors also reduced a4b7-dependent lymphocyte endothelial adhesion. Inhibition of endogenous NO production by either L-NAME, a non-selective NOS inhibitor, or by 1400 w, a selective iNOS inhibitor failed to induce, or potentiate TNF-alpha regulated MAdCAM-1 expression. CONCLUSIONS Exogenous NO donors may be beneficial in the treatment of IBD, while endogenous nitric oxide synthases may be less effective in controlling adhesion molecule expression in response to cytokines.
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Affiliation(s)
- Tadayuki Oshima
- Department of Molecular and Cellular Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA
| | - Paul Jordan
- Department of Gastroenterology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA
| | - Matthew B Grisham
- Department of Molecular and Cellular Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA
| | - Jonathan S Alexander
- Department of Molecular and Cellular Physiology, Louisiana State University Health Science Center, Shreveport, Louisiana, USA
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Klose KJ, Augenstein JS, Schneiderman N, Manas K, Abrams B, Bloom LJ. Selective autonomic blockade of conditioned and unconditioned cardiovascular changes in rhesus monkeys (Macaca mulatta). J Comp Physiol Psychol 1975; 89:810-8. [PMID: 240876 DOI: 10.1037/h0077170] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Changes in heart rate and in systolic and diastolic blood pressures were examined in eight rhesus monkeys during six sessions of differential classical conditioning. The conditioned stimuli consisted of tones differing in frequency and the unconditioned stimuli consisted of tail shock. Both the conditioned responses (CRS) and unconditioned responses (UCRs) consisted of increases in heart rate and in systolic and diastolic pressures, but blood pressure CRs sometimes occurred in the absence of heart rate CRs. Graded doses of the selective blocking agents propranolol, phentolamine, and atropine methylnitrate were systemically administered to four of the monkeys prior to additional conditioning sessions. The results suggested that the CRs and UCRs were mediated by both sympathetic and parasympathetic influences.
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Novotný Z, Manas K. [Sudden hearing disorders. Analysis of 117 cases]. Cesk Otolaryngol 1974; 23:302-10. [PMID: 4452116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Zeman K, Andrýsek O, Manas K. [Malignancy test using radiophosphorus for estimation of the extent of tumorous infiltration in otorhinolaryngologic neoplasms]. Cesk Otolaryngol 1973; 22:69-72. [PMID: 4702031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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