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| 1 | Lymphocytic colitis: A clue to bacterial etiology显示文摘AIM: To find out the role of bacteria as a possible etiological factor in lymphocytic colitis.METHODS: Twenty patients with histopathological diagnosis of lymphocytic colitis and 10 normal controls were included in this study. Colonoscopic biopsies were obtained from three sites (hepatic and splenic flexures and rectosigmoid region). Each biopsy was divided into two parts. A fresh part was incubated on special cultures for bacterial growth. The other part was used for the preparation of histologic tissue sections that were examined for the presence of bacteria with the help of Giemsa stain.RESULTS: Culture of tissue biopsies revealed bacterial growth in 18 out of 20 patients with lymphocytic colitis mostly Escherichia coli(14/18), which was found in all rectosigmoid specimens (14/14), but only in 8/14 and 6/14 of splenic and hepatic flexure specimens respectively. In two of these cases, E coliwas associated with proteus. Proteus was found only in one case, Klebsiella in two cases, and Staphylococcus aureus in one case. In the control group, only 2 out of 10 controls showed the growth of E coliin their biopsy cultures.Histopathology showed rod-shaped bacilli in the tissue sections of 12 out of 14 cases with positive E coliin their specimen's culture. None of the controls showed these bacteria in histopathological sections.CONCLUSION: This preliminary study reports an association between E coliand lymphocytic colitis, based on histological and culture observations. Serotyping and molecular studies are in process to assess the role of E coliin the pathogenesis of lymphocytic colitis. | Thanaa EA Helal Naglaa S Ahmed Osama Abo El Fotoh | 2005 | World Journal of Gastroenterology2005，11，46： | 2 |
| 2 | Association betweenNterminal propeptide B-type natriuretic peptide and markers ofhypervolemia显示文摘 | Gangji A S Helal B A Churchill D N | 2008 | Perit Dial Int2008，28，3： | 1 |
| 3 | Increased levels of microparticles originating from endothelial cells, platelets and erythrocytes in subjects with metabolic syndrome : relationship with oxidative stress 显示文摘 | Helal O Dcfoort C Robert S | 2011 | Nutr Metab Cardiovasc Dis2011，21，： | 1 |
| 4 | Participatory and persuasive tele-health显示文摘 | Lee D? Helal S Anton S | 2012 | Gerontology2012，58，3： | 1 |
| 5 | Aminopyrimidine deriva- tives as inhibitors for corrosion of 1018 carbon steel in nitricacid solution 显示文摘 | Abdallah M Helal E A Fouda A S | 2006 | Corrosion Science2006，48，7： | 1 |
| 6 | Optimal design of hybrid RO/MSF desalination plants Part Ⅰ: Modeling and algorithms显示文摘 | Helal AM El-Nashar AM Al-Katheeri E Al-Malek S | 2003 | Desalination2003，154，： | 1 |
| 7 | Location-based services: Back to the future 显示文摘 | BELLAVISTA P KUPPER A HELAL S | 2008 | IEEE Pervasive Computing2008，7，2： | 1 |
| 8 | A comparison between two different methods for solving KdV-Burgers equa- tion显示文摘 | Helal M A Mehanna M S | 2006 | Chaos Solitons Fractals2006，28，2： | 1 |
| 9 | An impedance spectroscopy method for the detection and evaluation of Babesia bovis antibodies in cattle 显示文摘 | Silva M G Helal S Esseghaier C | 2008 | Sens Actuator B-Chem2008，135，1： | 1 |
| 10 | Imrnunohistochemical expression of p53 and c-erbB2 protein in breast cancer in Egypt 显示文摘 | EI-A Helal T Khalifa A Kamel A S | 2000 | AnticancerRes2000，20，3： | 1 |
| 11 | A comparative study between two different methods for solving the general Korteweg -de Vries equation (GKdV) 显示文摘 | Helal M A Mehanna M S | 2007 | Chaos Solitons & Fractals2007，33，： | 1 |
| 12 | Human activity recognition and pattern discovery显示文摘 | Kim E Helal S Cook D | 2010 | Pervasive Computing IEEE2010，9，： | 1 |
| 13 | Optimal design of hybrid RO/MSF desalination plants,part Ⅰ:modeling and algorithms显示文摘 | A M Helal A M El-Nashar E S Al-Katheeri | 2003 | Desalination2003，154，： | 1 |
| 14 | A comparative study between two different methods for solving the general Korteweg-de V ries equation ( GKd V ) 显示文摘 | Helal M A Mehanna M S | 2007 | Chaos Solitons&Fractals2007，33，3： | 1 |
| 15 | A mobile transaction model that captures both the data and movement behavior显示文摘 | Dunham M H Helal A Balakrishnan S | 1997 | Mobile Networks and Applications1997，，2： | 1 |
| 16 | A comparative study between two different methods for solving the general Kortewegde Vries equation (GKdV)显示文摘 | HELAL M A MEHANNA M S | 2007 | Chaos Solitons & Fractals2007，，33： | 1 |
| 17 | Sifting Through the Jungle of Sensor Standards显示文摘 | Chen C Helal S | 2008 | IEEE Pervasive Computing2008，7，4： | 1 |
| 18 | Increased levels of microparticles originating from endothe- lial cells, platelets and erythrocytes in subjects with metabolic syndrome: relationship with oxida- tive stress显示文摘 | Helal O Defoort C Robert S | 2011 | Nutr Metab Cardiovasc Dis2011，21，9： | 1 |
| 19 | Economic feasibility of alternative designs of a PV-RO desalination unit for remote areas in the United Arab Emirates 显示文摘 | Helal A M Al-Malek S A Al-Katheeri E S | 2008 | Desalination2008，221，13： | 1 |
| 20 | Universal interactions with smart spaces显示文摘 | Lee C Helal S Lee W | 2006 | IEEE Pervasive Computing2006，5，1： | 1 |
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