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Guido V, Pontet Y, López V, Olano C. Prevalence of irritable bowel syndrome and other functional gastrointestinal disorders in Uruguay. Rev Gastroenterol Mex (Engl Ed) 2024:S2255-534X(24)00033-1. [PMID: 38644084 DOI: 10.1016/j.rgmxen.2023.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 06/20/2023] [Indexed: 04/23/2024]
Abstract
INTRODUCTION AND AIMS Irritable bowel syndrome (IBS) is one of the most frequent functional gastrointestinal disorders. Prevalence worldwide is estimated at 11%. There is little information on the prevalence of the other functional bowel disorders (FBDs). Our aim was to establish the prevalence of IBS and other FBDs according to the Rome IV criteria, in Uruguay. MATERIALS AND METHODS An observational, population-based prevalence study was conducted. Data were collected through an online questionnaire, utilizing the Rome IV criteria. RESULTS Of the 1,052 participants (79% women, mean patient age 44 years), 47.2% met the Rome IV diagnostic criteria for at least one of the FBDs analyzed. Functional constipation (FC) was the most frequent, at 18.7% (16.4-21.1), followed by IBS at 17.1% (14.9-19.4) and functional diarrhea (FD) at 15.4% (13.3-17.6). IBS with constipation (IBS-C) was the most frequent IBS subtype (35%) and the IBS with diarrhea (IBS-D) subtype predominated in men. All FBDs were more prevalent in women and youths. Of the survey participants with a FBD, 59% stated that they perceived no worsening of their symptoms related to the COVID-19 pandemic. CONCLUSIONS Ours is the first prevalence study on FBDs conducted on the Uruguayan general population. Half of the participants surveyed presented with a FBD analyzed in the study. FC was the most frequent, followed by IBS and FD. The prevalence rate of IBS was the highest, based on the Rome IV diagnostic criteria, and constipation was the most frequent subtype.
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Affiliation(s)
- V Guido
- Clínica de Gastroenterología Prof. Dra. Carolina Olano, Hospital de Clínicas, Montevideo, Uruguay.
| | - Y Pontet
- Clínica de Gastroenterología Prof. Dra. Carolina Olano, Hospital de Clínicas, Montevideo, Uruguay
| | - V López
- Clínica de Gastroenterología Prof. Dra. Carolina Olano, Hospital de Clínicas, Montevideo, Uruguay
| | - C Olano
- Clínica de Gastroenterología Prof. Dra. Carolina Olano, Hospital de Clínicas, Montevideo, Uruguay
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Tandon S, Stefanolo JP, Russell L, Paz Temprano MDL, Niveloni S, Verdu E, Armstrong D, Lebwohl B, Leffler D, Tye-Din J, Day A, Olano C, Lopez V, Uzcanga L, Madaria E, Montoro Huguet M, Vivas S, Rodriguez-Herrera A, Makharia G, Sanders D, Zeitz J, Mulder C, Ciacci C, Valerio F, Pinto-Sanchez MI. A13 THE RATE OF ADVERSE EVENTS AFTER COVID-19 VACCINATION IS SIMILAR IN PATIENTS WITH CELIAC DISEASE AND NON-CELIAC POPULATION: RESULTS OF A LARGE INTERNATIONAL CROSS-SECTIONAL STUDY. J Can Assoc Gastroenterol 2023. [PMCID: PMC9991115 DOI: 10.1093/jcag/gwac036.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
Abstract
Background Patients with celiac disease (CeD) reported increased COVID-19 vaccine hesitancy due to a fear of adverse events (AEs). However, the risk of AEs post-COVID-19 vaccination in patients with CeD is unknown. Purpose To assess whether the rate of common side effects (SEs) and AEs due to COVID vaccines are higher in patients with CeD compared to a non-CeD population. Method We conducted a collaborative international cross-sectional study in 16 countries between April 2022 and July 2022. An online survey was distributed to patients with CeD through patients’ local societies, and to non-CeD from the general population in each country through social media posts, word-of-mouth, and through academic institutions. We collected data on participant demographics, medical conditions, CeD diagnosis, GFD adherence, history of COVID-19 vaccinations (type and doses) and self-reported SEs and AEs post-COVID-19 vaccine. SEs included pain/swelling at the site, fatigue, fever, chills, nausea and/or headaches. AEs included thrombosis, myocarditis, anaphylactic reaction, and hospitalization related to the vaccine. Logistic regression models were used to assess predictors such as CeD diagnosis, age, gender, vaccine type and comorbidities on the likelihood of reporting SEs and AEs post-vaccine. Result(s) : A total of 17,795 participants completed the survey, 13,638 with CeD (median age of 45[27]) and 4,157 non-CeD controls (median age of 43[20]). There were no significant differences in sex between CeD and controls. Overall, CeD patients had similar odds of SEs compared with non-CeD individuals (aOR=1.02;95% CI=0.92-1.14). SEs were slightly increased only in the second dose of the vaccine in the CeD population compared to non-CeD individuals (aOR= 1.35; 95% CI=1.19-1.53). The most common reported SEs in CeD and controls were pain/swelling at the injection site (29% vs 23 %, p< 0.0001) and fatigue (29% vs 24%, p<0.0001). The odds of SEs were higher with Moderna Spikevax, AstraZeneca/Oxford and Johnson and Johnson vaccines than after the Pfizer vaccine (p< 0.0001). The overall rate of AEs post-vaccine was similar between patients with CeD and non-CeD individuals (aOR= 1.29; 95% CI= 0.89-1.87). Overall, female gender, older age, GFD adherence, respiratory conditions, obesity and receiving immunosuppressive medications increased the odds of SEs, while only age and a history of allergies increased the odds of AEs. Conclusion(s) In this large international study, patients with CeD reported similar rates of SEs and AEs post-COVID vaccine compared to non-CeD individuals. This information is highly relevant as it addresses the main concern leading to COVID-19 vaccine hesitancy in CeD patients. Disclosure of Interest None Declared
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Affiliation(s)
- S Tandon
- Health Sciences, McMaster University, Hamilton, Canada
| | | | - L Russell
- Medicine, McMaster University, Hamilton, Canada
| | | | - S Niveloni
- Hospital B Udaondo, Buenos Aires, Argentina
| | - E Verdu
- Medicine, McMaster University, Hamilton, Canada
| | - D Armstrong
- Medicine, McMaster University, Hamilton, Canada
| | | | - D Leffler
- Gastroenterology, Harvard University, Boston, United States
| | - J Tye-Din
- Immunology, Melbourne University, Melbourne, Australia
| | - A Day
- Paediatric Research, University of Otago, Christchurch, New Zealand
| | - C Olano
- Universidad de la Republica, Montevideo, Uruguay
| | - V Lopez
- Universidad de la Republica, Montevideo, Uruguay
| | - L Uzcanga
- Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, Mexico
| | - E Madaria
- Hospital General Universitario de Alicante, Alicante
| | | | - S Vivas
- Universidad de Leon, Leon, Spain
| | | | - G Makharia
- All India Institute of Medical Sciences, New Delhi, India
| | - D Sanders
- Infection, Immunity and Cardiovascular Disease, The University of Sheffield, Sheffield, United Kingdom
| | - J Zeitz
- Hirslanden Group, Zurich, Switzerland
| | - C Mulder
- Amsterdam UMC, Amsterdam, Netherlands
| | - C Ciacci
- Medicine and Surgery, Università degli Studi di Salerno, Baronissi, Italy
| | - F Valerio
- Albert Einstein Hospital Israelita, Sao Luiz, Hospital Sirio Libanes, Sao Paulo, Brazil
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Voltes A, Bermúdez A, Rodríguez-Gutiérrez G, Reyes ML, Olano C, Fernández-Bolaños J, Portilla FDL. Anti-Inflammatory Local Effect of Hydroxytyrosol Combined with Pectin-Alginate and Olive Oil on Trinitrobenzene Sulfonic Acid-Induced Colitis in Wistar Rats. J INVEST SURG 2018; 33:8-14. [DOI: 10.1080/08941939.2018.1469697] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- A. Voltes
- Colorectal Surgery Units, Department of General and Digestive Surgery, “Virgen del Rocío” University Hospital/IBiS/CSIC/University of Seville, Seville, Spain
| | - A. Bermúdez
- Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo de Olavide University Campus, Seville, Spain
| | - G. Rodríguez-Gutiérrez
- Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo de Olavide University Campus, Seville, Spain
| | - M. L. Reyes
- Colorectal Surgery Units, Department of General and Digestive Surgery, “Virgen del Rocío” University Hospital/IBiS/CSIC/University of Seville, Seville, Spain
| | - C. Olano
- National Institute of Toxicology and Forensic Sciences, Seville, Spain
| | - J. Fernández-Bolaños
- Department of Food Phytochemistry, Instituto de la Grasa (Spanish National Research Council, CSIC), Pablo de Olavide University Campus, Seville, Spain
| | - F. de la Portilla
- Colorectal Surgery Units, Department of General and Digestive Surgery, “Virgen del Rocío” University Hospital/IBiS/CSIC/University of Seville, Seville, Spain
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Lucero D, Olano C, Bursztyn M, Morales C, Stranges A, Friedman S, Macri EV, Schreier L, Zago V. Supplementation with n-3, n-6, n-9 fatty acids in an insulin-resistance animal model: does it improve VLDL quality? Food Funct 2017; 8:2053-2061. [DOI: 10.1039/c7fo00252a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Could supplementation with n-3, n-6 and n-9 fatty acids prevent atherogenic alterations of VLDL produced in insulin-resistance?
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Affiliation(s)
- D. Lucero
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Bioquímica Clínica
- Laboratorio de Lípidos y Aterosclerosis
- Buenos Aires
| | - C. Olano
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Bioquímica Clínica
- Laboratorio de Lípidos y Aterosclerosis
- Buenos Aires
| | - M. Bursztyn
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Bioquímica Clínica
- Laboratorio de Lípidos y Aterosclerosis
- Buenos Aires
| | - C. Morales
- Universidad de Buenos Aires
- Facultad de Medicina
- Instituto de Fisiopatología Cardiovascular (INFICA)
- Buenos Aires
- Argentina
| | - A. Stranges
- Universidad de Buenos Aires
- Facultad de Odontología
- Cátedra de Bioquímica General y Bucal
- Buenos Aires
- Argentina
| | - S. Friedman
- Universidad de Buenos Aires
- Facultad de Odontología
- Cátedra de Bioquímica General y Bucal
- Buenos Aires
- Argentina
| | - E. V. Macri
- Universidad de Buenos Aires
- Facultad de Odontología
- Cátedra de Bioquímica General y Bucal
- Buenos Aires
- Argentina
| | - L. Schreier
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Bioquímica Clínica
- Laboratorio de Lípidos y Aterosclerosis
- Buenos Aires
| | - V. Zago
- Universidad de Buenos Aires
- Facultad de Farmacia y Bioquímica
- Departamento de Bioquímica Clínica
- Laboratorio de Lípidos y Aterosclerosis
- Buenos Aires
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Yao K, Uedo N, Muto M, Ishikawa H, Cardona HJ, Filho ECC, Pittayanon R, Olano C, Yao F, Parra-Blanco A, Ho SH, Avendano AG, Piscoya A, Fedorov E, Bialek AP, Mitrakov A, Caro L, Gonen C, Dolwani S, Farca A, Cuaresma LF, Bonilla JJ, Kasetsermwiriya W, Ragunath K, Kim SE, Marini M, Li H, Cimmino DG, Piskorz MM, Iacopini F, So JB, Yamazaki K, Kim GH, Ang TL, Milhomem-Cardoso DM, Waldbaum CA, Carvajal WAP, Hayward CM, Singh R, Banerjee R, Anagnostopoulos GK, Takahashi Y. Development of an E-learning System for the Endoscopic Diagnosis of Early Gastric Cancer: An International Multicenter Randomized Controlled Trial. EBioMedicine 2016; 9:140-147. [PMID: 27333048 PMCID: PMC4972485 DOI: 10.1016/j.ebiom.2016.05.016] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 05/15/2016] [Accepted: 05/16/2016] [Indexed: 01/06/2023] Open
Abstract
Background In many countries, gastric cancer is not diagnosed until an advanced stage. An Internet-based e-learning system to improve the ability of endoscopists to diagnose gastric cancer at an early stage was developed and was evaluated for its effectiveness. Methods The study was designed as a randomized controlled trial. After receiving a pre-test, participants were randomly allocated to either an e-learning or non-e-learning group. Only those in the e-learning group gained access to the e-learning system. Two months after the pre-test, both groups received a post-test. The primary endpoint was the difference between the two groups regarding the rate of improvement of their test results. Findings 515 endoscopists from 35 countries were assessed for eligibility, and 332 were enrolled in the study, with 166 allocated to each group. Of these, 151 participants in the e-learning group and 144 in the non-e-learning group were included in the analysis. The mean improvement rate (standard deviation) in the e-learning and non-e-learning groups was 1·24 (0·26) and 1·00 (0·16), respectively (P < 0·001). Interpretation This global study clearly demonstrated the efficacy of an e-learning system to expand knowledge and provide invaluable experience regarding the endoscopic detection of early gastric cancer (R000012039). This report establishes that an e-learning system on the Internet can improve the diagnostic ability of endoscopists. Countless endoscopists worldwide can access the system to learn how to make an endoscopic diagnosis of early gastric cancer. The e-learning system could be modified to provide education regarding endoscopic diagnosis in other organs.
This is the first report to demonstrate how an e-learning system based on the Internet can improve the diagnostic ability of gastrointestinal endoscopists worldwide. There is no limit to the number of endoscopists who can access the system and benefit from this opportunity to learn how to make an endoscopic diagnosis of early gastric cancer. This e-learning system could be modified to provide education regarding endoscopic diagnosis in other organs such as the large intestine and the esophagus, as well as the stomach. It may contribute to human welfare and health by reducing the mortality from gastrointestinal cancer.
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Affiliation(s)
- K Yao
- Fukuoka University Chikushi Hospital, Chikushino, Japan.
| | - N Uedo
- Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Japan
| | - M Muto
- Kyoto University, Kyoto, Japan
| | - H Ishikawa
- Kyoto Prefectural University of Medicine, Kyoto, Japan
| | | | | | - R Pittayanon
- King Chulalongkorn Memorial Hospital, The Thai Red Cross and Chulalongkorn University, Bangkok, Thailand
| | - C Olano
- Universidad de la República, Montevideo, Uruguay
| | - F Yao
- Peking Union Medical College Hospital, Beijing, China
| | - A Parra-Blanco
- School of Medicine, Pontificia Universidad Catolica De Chile, Santiago, Chile
| | - S H Ho
- University of Malaya, Kuala Lumpur, Malaysia
| | - A G Avendano
- Hospital Rafael Angel Calderon Guardia, CCSS, San Jose, Costa Rica
| | - A Piscoya
- Universidad Peruana de Ciencias Aplicadas, Lima, Peru
| | - E Fedorov
- Russia National Medical University, Moscow University Hospital, N31, Moscow, Russian Federation
| | - A P Bialek
- Pomeranian Medical University, Szczecin, Poland
| | - A Mitrakov
- Nizhniy Novgorod Cancer Hospital, Nizhniy Novgorod, Russian Federation
| | - L Caro
- GEDyt Gastroenterologia diagnostica y tratamiento Inst afiliafa a la UBA Buenos Aires, Argentina
| | - C Gonen
- Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - S Dolwani
- Division of Population Medicine, School of Medicine, Cardiff University, Cardiff, United Kingdom
| | - A Farca
- The American British Cowdray Medical Center. Mexico City, Mexico
| | - L F Cuaresma
- Hospital Nacional Adolfo Guevara Velasco, Cusco, Peru
| | - J J Bonilla
- i-gastro/Hospital Central de la Fuerza Aerea del Peru, Lima, Peru
| | - W Kasetsermwiriya
- Faculty of Medicine Vajira Hospital, Navamindradhiraj University, Bangkok, Thailand
| | - K Ragunath
- NIHR Nottingham Digestive Disease Biomedical Research Unit, Queens Medical Centre, Nottingham University Hospital, Nottingham, United Kingdom
| | - S E Kim
- Kosin University College of Medicine, Busan, Republic of Korea
| | - M Marini
- Gastroenterology and Operative Endoscopy Unit, Siena University Hospital, Siena, Italy
| | - H Li
- Sichuan Provincial People's Hospital, Sichuan, Academy of Medical Sciences, Chengdu, China
| | | | - M M Piskorz
- Hospital de Clinicas Jose de San Martin, Buenos Aires, Argentina
| | - F Iacopini
- Ospedale S. Giuseppe, ASL Roma 6, Albano L, Rome, Italy
| | - J B So
- National University of Singapore, Singapore, Singapore
| | - K Yamazaki
- University of Sao Paulo, Sao Paulo, Brazil
| | - G H Kim
- Pusan National University School of Medicine, Busan, Republic of Korea
| | - T L Ang
- Changi General Hospital, Singapore, Singapore
| | | | - C A Waldbaum
- Hospital de Clinicas Jose de San Martin, Buenos Aires, Argentina
| | | | - C M Hayward
- Derriford Hospital, Plymouth, United Kingdom
| | - R Singh
- Lyell McEwin Hospital & University of Adelaide, Adelaide, Australia
| | - R Banerjee
- Asian Institute of Gastroenterology, Hyderabad, India
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Affiliation(s)
- L C Fry
- Department of Internal Medicine, Gastroenterology, and Infectious Diseases, Marienhospital Bottrop, Bottrop, Germany
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Vazquez C, Berrueta J, De Simone F, Tcheckmedyian A, Gonzalez N, Bernachin J, Perrota A, Curi J, Mariño A, Olano C. Small-intestinal bleeding due to metastatic renal cell cancer. Endoscopy 2011; 43 Suppl 2 UCTN:E13. [PMID: 21271517 DOI: 10.1055/s-0030-1255821] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- C Vazquez
- Gastroenterology Clinic Prof. H. Cohen, Hospital de Clínicas, Montevideo, Uruguay
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Affiliation(s)
- K Mönkemüller
- Department of Internal Medicine and Gastroenterology, Marienhospital, 46236 Bottrop, Germany
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Mönkemüller K, Olano C, Fry LC, Malfertheiner P. Small-bowel endoscopy. Endoscopy 2009; 41:55-8. [PMID: 19058125 DOI: 10.1055/s-2008-1077756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- K Mönkemüller
- Department of Gastroenterology, Hepatology and Infectious Diseases, Otto-von-Guericke University, Magdeburg, Germany.
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Heath M, Kuhn D, Schnell R, Olano C. Mitochondrial DNA restriction map for the Caribbean fruit fly, Anastrepha suspensa, and occurrence of mitochondrial DNA diversity within highly inbred colonies. Biochem Genet 2002; 40:283-92. [PMID: 12296630 DOI: 10.1023/a:1019839102099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 11/12/2022]
Abstract
A restriction map has been constructed for Anastrepha suspensa mitochondrial DNA. One HaeIII site was found to be polymorphic among individuals in highly inbred colonies and a feral population. Based on mapping information, the polymorphic site was determined to be in the ATPase 6 gene. Primers TK-J-3804 and C3-N-5460 amplified this region. The amplicon was cut by HaeIII in flies of one haplotype and not cut in flies of the other haplotype. From 30 to 43% of the individual flies studied had this additional HaeIlI site. After cloning of the approximately 5200 bp XbaI fragment, the two mitotypes were identified. A 988 base fragment, coding for the entire tRNA-Lys(AAG), tRNA-Asp(GAC), and ATPase 8genes, and a partial ATPase 6gene was sequenced Four silent mutations, including the one at the informative site were located. The HaeIII polymorphism and other sequence differences may prove useful as a diagnostic for identification of the origin of introduced fruit flies.
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Affiliation(s)
- M Heath
- USDA-ARS, National Germplasm Repository, Subtropical Horticulture Research Station, Miami, Florida 33158, USA.
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Rodríguez L, Rodríguez D, Olano C, Braña AF, Méndez C, Salas JA. Functional analysis of OleY L-oleandrosyl 3-O-methyltransferase of the oleandomycin biosynthetic pathway in Streptomyces antibioticus. J Bacteriol 2001; 183:5358-63. [PMID: 11514520 PMCID: PMC95419 DOI: 10.1128/jb.183.18.5358-5363.2001] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [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: 11/20/2022] Open
Abstract
Oleandomycin, a macrolide antibiotic produced by Streptomyces antibioticus, contains two sugars attached to the aglycon: L-oleandrose and D-desosamine. oleY codes for a methyltransferase involved in the biosynthesis of L-oleandrose. This gene was overexpressed in Escherichia coli to form inclusion bodies and in Streptomyces lividans, producing a soluble protein. S. lividans overexpressing oleY was used as a biotransformation host, and it converted the precursor L-olivosyl-erythronolide B into its 3-O-methylated derivative, L-oleandrosyl-erythronolide B. Two other monoglycosylated derivatives were also substrates for the OleY methyltransferase: L-rhamnosyl- and L-mycarosyl-erythronolide B. OleY methyltransferase was purified yielding a 43-kDa single band on sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The native enzyme showed a molecular mass of 87 kDa by gel filtration chromatography, indicating that the enzyme acts as a dimer. It showed a narrow pH range for optimal activity, and its activity was clearly stimulated by the presence of several divalent cations, being maximal with Co(2+). The S. antibioticus OleG2 glycosyltransferase is proposed to transfer L-olivose to the oleandolide aglycon, which is then converted into L-oleandrose by the OleY methyltransferase. This represents an alternative route for L-oleandrose biosynthesis from that in the avermectin producer Streptomyces avermitilis, in which L-oleandrose is transferred to the aglycon by a glycosyltransferase.
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Affiliation(s)
- L Rodríguez
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias, Universidad de Oviedo, 33006 Oviedo, Spain
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Aguirrezabalaga I, Olano C, Allende N, Rodriguez L, Braña AF, Méndez C, Salas JA. Identification and expression of genes involved in biosynthesis of L-oleandrose and its intermediate L-olivose in the oleandomycin producer Streptomyces antibioticus. Antimicrob Agents Chemother 2000; 44:1266-75. [PMID: 10770761 PMCID: PMC89854 DOI: 10.1128/aac.44.5.1266-1275.2000] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.3] [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: 11/20/2022] Open
Abstract
A 9.8-kb DNA region from the oleandomycin gene cluster in Streptomyces antibioticus was cloned. Sequence analysis revealed the presence of 8 open reading frames encoding different enzyme activities involved in the biosynthesis of one of the two 2, 6-deoxysugars attached to the oleandomycin aglycone: L-oleandrose (the oleW, oleV, oleL, and oleU genes) and D-desosamine (the oleNI and oleT genes), or of both (the oleS and oleE genes). A Streptomyces albus strain harboring the oleG2 glycosyltransferase gene integrated into the chromosome was constructed. This strain was transformed with two different plasmid constructs (pOLV and pOLE) containing a set of genes proposed to be required for the biosynthesis of dTDP-L-olivose and dTDP-L-oleandrose, respectively. Incubation of these recombinant strains with the erythromycin aglycon (erythronolide B) gave rise to two new glycosylated compounds, identified as L-3-O-olivosyl- and L-3-O-oleandrosyl-erythronolide B, indicating that pOLV and pOLE encode all enzyme activities required for the biosynthesis of these two 2,6-dideoxysugars. A pathway is proposed for the biosynthesis of these two deoxysugars in S. antibioticus.
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Affiliation(s)
- I Aguirrezabalaga
- Departamento de Biología Funcional e Instituto Universitario de Oncología de Asturias (IUOPA), Universidad de Oviedo, 33006 Oviedo, Spain
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Olano C, Lomovskaya N, Fonstein L, Roll JT, Hutchinson CR. A two-plasmid system for the glycosylation of polyketide antibiotics: bioconversion of epsilon-rhodomycinone to rhodomycin D. Chem Biol 1999; 6:845-55. [PMID: 10631513 DOI: 10.1016/s1074-5521(00)80004-6] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND The biological activity of many microbial products requires the presence of one or more deoxysugar molecules attached to agylcone. This is especially prevalent among polyketides and is an important reason that the antitumor anthracycline antibiotics are avid DNA-binding drugs. The ability to make different deoxyaminosugars and attach them to the same or different aglycones in vivo would facilitate the synthesis of new anthracyclines and the quest for antitumor drugs. This is feasible using the numerous bacterial genes for deoxysugar biosynthesis that are now available. RESULTS Production of thymidine diphospho (TDP)-L-daunosamine (dnm), the aminodeoxysugar present in the anthracycline antitumor drugs daunorubicin (DNR) and doxorubicin (DXR), and its attachment to epsilon-rhodomycinone to generate rhodomycin D has been achieved by bioconversion with a strain of Streptomyces lividans that bears two plasmids. One contained the Streptomyces peucetius dnmJVUZTQS genes plus dnmW (previously named dpsH and considered to be a polyketide cyclase gene), dnrH, which is not required for the formation of rhodomycin D, and dnrI, a regulatory gene required for expression of the dnm and drr genes. The other plasmid had genes encoding glucose-1-phosphate thymidylyltransferase and TDP-glucose-4,6-dehydratase (dnmL and dnmM, respectively, or mtmDE, their homologs from Streptomyces agrillaceus) plus the drrAB DNR/DXR resistance genes. CONCLUSIONS The high-yielding glycosylation of the aromatic polyketide epsilon-rhodomycinone using plasmid-borne deoxysugar biosynthesis genes proves that the minimal information for L-daunosamine biosynthesis and attachment in the heterologous host is encoded by the dnmLMJVUTS genes. This is a general approach to making both known and new glycosides of anthracyclines, several of which have medically important antitumor activity.
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Affiliation(s)
- C Olano
- School of Pharmacy, University of Wisconsin, Madison 53706, USA
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Olano C, Rodriguez AM, Michel JM, Méndez C, Raynal MC, Salas JA. Analysis of a Streptomyces antibioticus chromosomal region involved in oleandomycin biosynthesis, which encodes two glycosyltransferases responsible for glycosylation of the macrolactone ring. Mol Gen Genet 1998; 259:299-308. [PMID: 9749673 DOI: 10.1007/s004380050816] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
A 6-kb region from the chromosome of Streptomyces antibioticus, an oleandomycin producer, was cloned and sequenced. This region was located between the 3' end of the gene encoding the third subunit of the oleandomycin type I polyketide synthase and the oleP and oleB genes, which encode a cytochrome P450 monooxygenase and an oleandomycin resistance gene, respectively. Analysis of the nucleotide sequence revealed the presence of five genes encoding a cytochrome P450-like protein (oleP1), two glycosyltransferases (oleG1 and oleG2) involved in the transfer of the two 6-deoxysugars (L-oleandrose and D-desosamine) to the oleandomycin macrolactone ring, a methyltransferase (oleM1), and a gene (oleY) of unknown function. Insertional inactivation of this region by gene disruption generated an oleandomycin non-producing mutant which accumulated a compound that, according to mass spectrometry analysis, could correspond to the oleandomycin macrolactone ring (oleandolide), suggesting that the mutation affects oleandrosyl glycosyltransferase.
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Affiliation(s)
- C Olano
- Departamento de Biología Funcional, Instituto Universitario de Biotecnologia de Asturias (IUBA-CSIC), Universidad de Oviedo, Spain
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Quirós LM, Aguirrezabalaga I, Olano C, Méndez C, Salas JA. Two glycosyltransferases and a glycosidase are involved in oleandomycin modification during its biosynthesis by Streptomyces antibioticus. Mol Microbiol 1998; 28:1177-85. [PMID: 9680207 DOI: 10.1046/j.1365-2958.1998.00880.x] [Citation(s) in RCA: 145] [Impact Index Per Article: 5.6] [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: 11/20/2022]
Abstract
A 5.2 kb region from the oleandomycin gene cluster in Streptomyces antibioticus located between the oleandomycin polyketide synthase gene and sugar biosynthetic genes was cloned. Sequence analysis revealed the presence of three open reading frames (designated oleI, oleN2 and oleR). The oleI gene product resembled glycosyltransferases involved in macrolide inactivation including the oleD product, a previously described glycosyltransferase from S. antibioticus. The oleN2 gene product showed similarities with different aminotransferases involved in the biosynthesis of 6-deoxyhexoses. The oleR gene product was similar to several glucosidases from different origins. The oleI, oleR and oleD genes were expressed in Streptomyces lividans. OleI and OleD intracellular proteins were partially purified by affinity chromatography in an UDP-glucuronic acid agarose column and OleR was detected as a major band from the culture supernatant. OleI and OleD showed oleandomycin glycosylating activity but they differ in the pattern of substrate specificity: OleI being much more specific for oleandomycin. OleR showed glycosidase activity converting glycosylated oleandomycin into active oleandomycin. A model is proposed integrating these and previously reported results for intracellular inactivation, secretion and extracellular reactivation of oleandomycin.
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Affiliation(s)
- L M Quirós
- Departamento de Biología Funcional e Instituto Universitario de Biotecnología de Asturias (IUBA-CSIC), Universidad de Oviedo, Spain
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Olano C, Rodriguez AM, Méndez C, Salas JA. Topological studies of the membrane component of the OleC ABC transporter involved in oleandomycin resistance in Streptomyces antibioticus. FEMS Microbiol Lett 1996; 143:133-9. [PMID: 8837465 DOI: 10.1111/j.1574-6968.1996.tb08472.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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: 02/02/2023] Open
Abstract
The OleC ABC transporter of Streptomyces antibioticus is constituted by an ATP-binding protein (OleC) and a hydrophobic protein (OleC5). Here we present experimental evidence demonstrating that the OleC5 protein is an integral membrane protein and we propose a topological model for its integration into the membrane. This model is based on the generation of hybrid proteins between different regions of OleC5 and a Escherichia coli beta-lactamase (BlaM) and the determination of the minimal inhibitory concentrations to ampicillin in these constructions. Fusions were generated both by cloning specific fragments of oleC5 and by creating ExoIII nested deletions of the gene. In the topological model proposed there will be six alpha-helix transmembrane regions, two cytoplasmic and four periplasmic loops and a hydrophobic linker domain.
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Affiliation(s)
- C Olano
- Departmento de Biologia Funcional, Universidad de Oviedo, Spain
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Abstract
A 3.2 kb Sstl-Sphl DNA fragment of Streptomyces antibioticus, an oleandomycin producer, conferring resistance to oleandomycin was sequenced and found to contain an open reading frame of 1710 bp (oleB). Its deduced gene product (OleB) showed a high degree of similarity with other proteins belonging to the ABC-transporter superfamily including the gene product of another oleandomycin-resistance gene (OleC). The OleB protein contains two ATP-binding domains, each of approximately 200 amino acids in length, and no hydrophobic transmembrane regions. Functional analysis of the oleB gene was carried out by deleting specific regions of the gene and assaying for oleandomycin resistance. These experiments showed that either the first or the second half of the gene containing only one ATP-binding domain was sufficient to confer resistance to oleandomycin. The gene oleB was expressed in Escherichia coli fused to a maltose-binding protein (MBP) using the pMal-c2 vector. The MBP-OleB hybrid protein was purified by affinity chromatography on an amylose resin and polyclonal antibodies were raised against the fusion protein. These were used to monitor the biosynthesis and physical location of OleB during growth. By Western analysis, the OleB protein was detected both in the soluble and in the membrane fraction and its synthesis paralleled oleandomycin biosynthesis. It was also shown that a Streptomyces albus strain, containing both a glycosyltransferase (OleD) able to inactivate oleandomycin and the OleB protein, was capable of glycosylating oleandomycin and secreting the inactive glycosylated molecule. It is proposed that OleB constitutes the secretion system by which oleandomycin or its inactive glycosylated form could be secreted by S. antibioticus.
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Affiliation(s)
- C Olano
- Departamento de Biología Funcional e Instituto Universitario de Biotecnologia (I.U.B.A.), Universidad de Oviedo, Spain
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Rodriguez AM, Olano C, Méndez C, Hutchinson CR, Salas JA. A cytochrome P450-like gene possibly involved in oleandomycin biosynthesis by Streptomyces antibioticus. FEMS Microbiol Lett 1995; 127:117-20. [PMID: 7737473 DOI: 10.1111/j.1574-6968.1995.tb07459.x] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
A cosmid clone from an oleandomycin producer, Streptomyces antibioticus, contains a large open reading frame encoding a type I polyketide synthase subunit and an oleandomycin resistance gene (oleB). Sequencing of a 1.4-kb DNA fragment adjacent to oleB revealed the existence of an open reading frame (oleP) encoding a protein similar to several cytochrome P450 monooxygenases from different sources, including the products of the eryF and eryK genes from Saccharopolyspora erythraea that participate in erythromycin biosynthesis. The oleP gene was expressed in Escherichia coli as a fusion protein to a maltose-binding protein. Using polyclonal antibodies against this fusion protein it was observed that the synthesis of the cytochrome P450 was in parallel to that of oleandomycin. The cytochrome P450 encoded by the oleP gene could be responsible for the epoxidation of carbon 8 of the oleandomycin lactone ring.
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Affiliation(s)
- A M Rodriguez
- Departamento de Biología Funcional, Universidad de Oviedo, Spain
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Salas JA, Hernández C, Méndez C, Olano C, Quirós LM, Rodríguez AM, Vilches C. Intracellular glycosylation and active efflux as mechanisms for resistance to oleandomycin in Streptomyces antibioticus, the producer organism. Microbiologia 1994; 10:37-48. [PMID: 7946126] [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: 01/28/2023]
Abstract
Resistance to macrolides in producing organisms can be achieved by target site modification, intracellular inactivation of the antibiotic or active efflux mechanisms for the excretion of the antibiotic. The oleandomycin producer, Streptomyces antibioticus, possesses oleandomycin-sensitive ribosomes all along the cell cycle. However, it contains an intracellular glycosyltransferase capable of inactivating oleandomycin in the presence of UDP-glucose as cofactor. The correspondent gene (oleD) has been cloned and sequenced and the glycosyltransferase purified. Two other genes (oleB and oleC) that confer oleandomycin resistance have been cloned and characterized and both encode ABC (ATP-Binding Cassette) transporters. These may constitute the excretion mechanism throughout which the glycosylated oleandomycin is excreted. A second enzyme activity has been purified from culture supernatants of the oleandomycin producer that releases the glucose from the inactive glycosylated oleandomycin generating active antibiotic. This enzyme would probably catalyse the last step in the biosynthesis of oleandomycin.
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Affiliation(s)
- J A Salas
- Departamento de Biología Funcional, Universidad de Oviedo
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Hernández C, Olano C, Méndez C, Salas JA. Characterization of a Streptomyces antibioticus gene cluster encoding a glycosyltransferase involved in oleandomycin inactivation. Gene X 1993; 134:139-40. [PMID: 8244027 DOI: 10.1016/0378-1119(93)90189-a] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [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: 01/29/2023] Open
Abstract
By homology to the mgt gene (encoding a macrolide glycosyltransferase) from Streptomyces lividans, a 3.3-kb DNA fragment from the oleandomycin producer, Streptomyces antibioticus, was cloned and sequenced. Analysis of the sequence revealed the presence of the 3' end of a gene (ORF1) and two complete ORFs (ORF2 and oleD), all of them translationally coupled. The deduced product of the sequenced region of ORF1 contained the typical signature of integral membrane proteins responsible for the translocation of substrates across the membrane. The ORF2 product did not show significant similarity with proteins in databases, but contains an N-terminus leader peptide region characteristic of secreted proteins, and a lipid attachment site motif characteristic of membrane lipoproteins synthesized with a precursor signal peptide. The oleD product showed clear similarity with several UDP-glucuronosyl- and UDP-glycosyl-transferases from different origins and particularly with the mgt gene from S. lividans, and might encode a glycosyltransferase activity capable of inactivating macrolides. It is proposed that these three genes could participate in the intracellular glycosylation of oleandomycin and its secretion during antibiotic production.
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Affiliation(s)
- C Hernández
- Departamento de Biología Funcional, (Area Microbiologia), Universidad de Oviedo, Spain
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Rodríguez AM, Olano C, Vilches C, Méndez C, Salas JA. Streptomyces antibioticus contains at least three oleandomycin-resistance determinants, one of which shows similarity with proteins of the ABC-transporter superfamily. Mol Microbiol 1993; 8:571-82. [PMID: 8326867 DOI: 10.1111/j.1365-2958.1993.tb01601.x] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.1] [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: 01/29/2023]
Abstract
Three different DNA fragments of an oleandomycin producer, Streptomyces antibioticus, conferring oleandomycin resistance were cloned in plasmid pIJ702 and expressed in Streptomyces lividans and in Streptomyces albus. These oleandomycin resistance determinants were designated as oleA (pOR400), oleB (pOR501) and oleC (pOR800). oleA and oleC are closely linked in the chromosome as they were both obtained together in two cosmid clones that were isolated from a genomic library. Sequencing of the oleC resistance determinant revealed four complete open reading frames (ORFs) and the C-terminal end of a fifth. The functions of orf1 and orf2 are unknown since they did not show significant similarity with other sequences in the data bases. The orf3 gene product has similarity with some proteins involved in iron and vitamin B12 uptake in bacteria. The orf4 gene product had a hydrophilic profile and showed important similarity with proteins containing typical ATP-binding domains characteristic of the ABC-transporter superfamily and involved in membrane transport and, particularly, with several genes conferring resistance to various macrolide antibiotics and anticancer drugs. The last gene, orf5, is translationally coupled to orf4 and codes for a hydrophobic polypeptide containing several transmembrane domains characteristic of integral membrane proteins. Subcloning and deletion experiments limited the resistance determinant to a 0.9 kb PstI-SphI fragment and only orf4 is included in this fragment. These results suggest that resistance to oleandomycin conferred by oleC (orf4) is probably due to an efflux transport system of the ABC-transporter superfamily.
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Affiliation(s)
- A M Rodríguez
- Departamento de Biología Funcional, Universidad de Oviedo, Spain
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