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Soria-Lozano P, Gilaberte Y, Paz-Cristobal MP, Pérez-Artiaga L, Lampaya-Pérez V, Aporta J, Pérez-Laguna V, García-Luque I, Revillo MJ, Rezusta A. In vitro effect photodynamic therapy with differents photosensitizers on cariogenic microorganisms. BMC Microbiol 2015; 15:187. [PMID: 26410025 PMCID: PMC4584123 DOI: 10.1186/s12866-015-0524-3] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 09/21/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Antimicrobial photodynamic therapy has been proposed as an alternative to suppress subgingival species. This results from the balance among Streptococcus sanguis, Streptococcus mutans and Candida albicans in the dental biofilm. Not all the photosensitizers have the same photodynamic effect against the different microorganims. The objective of this study is to compare in vitro the photodynamic effect of methylene blue (MB), rose Bengal (RB) and curcumin (CUR) in combination with white light on the cariogenic microorganism S. mutans, S. sanguis and C. albicans. RESULTS Photodynamic therapy with MB, RB and CUR inhibited 6 log 10 the growth of both bacteria but at different concentrations: 0.31-0.62 μg/ml and 0.62-1.25 μg/ml RB were needed to photoinactivate S. mutans and S. sanguis, respectively; 1.25-2.5 μg/ml MB for both species; whereas higher CUR concentrations (80-160 μg/ml and 160-320 μg/ml) were required to obtain the same reduction in S. mutans and S. sanguis viability respectively. The minimal fungicidal concentration of MB for 5 log10 CFU reduction (4.5 McFarland) was 80-160 μg/ml, whereas for RB it ranged between 320 and 640 μg/ml. For CUR, even the maximum studied concentration (1280 μg/ml) did not reach that inhibition. Incubation time had no effect in all experiments. CONCLUSIONS Photodynamic therapy with RB, MB and CUR and white light is effective in killing S. mutans and S. sanguis strains, although MB and RB are more efficient than CUR. C. albicans required higher concentrations of all photosensitizers to obtain a fungicidal effect, being MB the most efficient and CUR ineffective.
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Research Support, Non-U.S. Gov't |
10 |
66 |
2
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Gomollón F, Sicilia B, Ducóns JA, Sierra E, Revillo MJ, Ferrero M. Third line treatment for Helicobacter pylori: a prospective, culture-guided study in peptic ulcer patients. Aliment Pharmacol Ther 2000; 14:1335-8. [PMID: 11012479 DOI: 10.1046/j.1365-2036.2000.00833.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND A third line treatment is needed in roughly 5% of patients infected with Helicobacter pylori. Few data have been reported on efficacy of treatment regimens in these patients. METHODS A prospective trial was designed to study the effectiveness of third line treatment of H. pylori infection in ulcer patients. Two-week quadruple, culture-guided, combinations were used in 31 consecutive patients. Susceptibility to metronidazole and clarithromycin were studied by E-test, and thereafter a predetermined treatment regimen was used. Compliance was evaluated by pill count, and eradication defined by negative urea breath test at 6 weeks. RESULTS Two main quadruple regimens were used in 29 patients. In spite of good compliance, the combination of omeprazole, tetracycline, bismuth and clarithromycin (OTBC) showed an eradication rate (per protocol analysis) of 36% (five out of 14; CI: 12.8-64.9), and if amoxycillin was used (OTBA) the rate was 67% (eight out of 12; CI: 34.9-90.1). The difference was not significant. No clinical factor was found to be associated with failure to eradicate. CONCLUSIONS Third line treatment often fails to eradicate H. pylori infection. New strategies need to be developed and tested for this common clinical situation.
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Clinical Trial |
25 |
60 |
3
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Bouza E, Dominguez A, Meseguer M, Buzon L, Boixeda D, Revillo MJ, de Rafael L, Martinez-Beltran J. Yersinia enterocolitica Septicemia. Am J Clin Pathol 1980; 74:404-9. [PMID: 7424822 DOI: 10.1093/ajcp/74.4.404] [Citation(s) in RCA: 59] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Human Yersinia enterocolitica septicemia is an uncommon condition. Four new cases are reported here and a review is made of 51 others taken from medical literature. Septicemia caused by this microorganism occurs more frequently in the young and in the elderly, and usually involves patients havig previous liver or blood disorders, diabetes mellitus, and other debilitating diseases. Clinically it is indistinguishable from sepsis caused by other organisms of Enterobacteriaceae, but it is important that the clinician bear its existence in mind, since Yersinia enterocolitica strains are usually resistant to beta-lactam antibiotics, whereas they are susceptible to the aminoglycosides and co-trimoxazole, among others. Susceptibilities in the blood isolates from our patients, and in another ten fecal isolates from eight other patients showed the previously described pattern. Our isolates, however, were all susceptible to the new cephalosporins, cefamandole and cefoxitin, and to the experimental ones, HR-756, T-1551, and Ly-127.935.
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Case Reports |
45 |
59 |
4
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Paz-Cristobal MP, Royo D, Rezusta A, Andrés-Ciriano E, Alejandre MC, Meis JF, Revillo MJ, Aspiroz C, Nonell S, Gilaberte Y. Photodynamic fungicidal efficacy of hypericin and dimethyl methylene blue against azole-resistant Candida albicans strains. Mycoses 2013; 57:35-42. [PMID: 23905682 DOI: 10.1111/myc.12099] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 12/05/2012] [Accepted: 05/07/2013] [Indexed: 12/22/2022]
Abstract
Antimicrobial photodynamic therapy (aPDT) is an emerging alternative to treat infections based on the use of photosensitisers (PSs) and visible light. To investigate the fungicidal effect of PDT against azole-resistant Candida albicans strains using two PSs with a different mechanism of action, hypericin (HYP) and 1,9-dimethyl methylene blue (DMMB), comparing their efficacy and the reactive oxygen species (ROS) species involved in their cytotoxicity. Azole-resistant and the azole-susceptible C. albicans strains were used. Solutions of 0.5 and 4 McFarland inoculum of each Candida strain were treated with different concentrations of each PS, and exposed to two light-emitting diode light fluences (18 and 37 J cm⁻²). Mechanistic insight was gained using several ROS quenchers. The minimal fungicidal concentration of HYP for ≥3 log₁₀ CFU reduction (0.5 McFarland) was 0.62 μmol l⁻¹ for most strains, whereas for DMMB it ranged between 1.25 and 2.5 μmol l⁻¹. Increasing the fluence to 37 J cm⁻² allowed to reduce the DMMB concentration. Higher concentrations of both PSs were required to reach a 6 log₁₀ reduction (4 McFarland). H₂O₂ was the main phototoxic species involved in the fungicidal effect of HYP-aPDT whereas ¹O₂ was more important for DMMB-based treatments. aPDT with either HYP or DMMB is effective in killing of C. albicans strains independent of their azole resistance pattern. HYP was more efficient at low fungal concentration and DMMB at higher concentrations.
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Research Support, Non-U.S. Gov't |
12 |
44 |
5
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Lozano C, Aspiroz C, Rezusta A, Gómez-Sanz E, Simon C, Gómez P, Ortega C, Revillo MJ, Zarazaga M, Torres C. Identification of novel vga(A)-carrying plasmids and a Tn5406-like transposon in meticillin-resistant Staphylococcus aureus and Staphylococcus epidermidis of human and animal origin. Int J Antimicrob Agents 2012; 40:306-12. [DOI: 10.1016/j.ijantimicag.2012.06.009] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Revised: 06/08/2012] [Accepted: 06/08/2012] [Indexed: 10/28/2022]
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13 |
34 |
6
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Benito D, Lozano C, Rezusta A, Ferrer I, Vasquez MA, Ceballos S, Zarazaga M, Revillo MJ, Torres C. Characterization of tetracycline and methicillin resistant Staphylococcus aureus strains in a Spanish hospital: Is livestock-contact a risk factor in infections caused by MRSA CC398? Int J Med Microbiol 2014; 304:1226-32. [DOI: 10.1016/j.ijmm.2014.09.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 08/30/2014] [Accepted: 09/21/2014] [Indexed: 10/24/2022] Open
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7
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Vicente R, Sicilia B, Gallego S, Revillo MJ, Ducóns J, Gomollón F. [Helicobacter pylori eradication in patients with peptic ulcer after two treatment failures: a prospective culture-guided study]. GASTROENTEROLOGIA Y HEPATOLOGIA 2002; 25:438-42. [PMID: 12139836 DOI: 10.1016/s0210-5705(02)70283-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AIM To determine the effectiveness of a third, culture-guided, treatment of H. pylori infection after two unsuccessful attempts. PATIENTS AND METHODS Forty-two consecutive patients with a diagnosis of peptic ulcer were included in an open prospective and multicenter study. After two unsuccessful attempts at eradication (demonstrated by positive urea breath test), all patients underwent endoscopy and H. pylori infection was confirmed by urease test, histology and culture (Pylori-Agar, Bio Merieux, France). Antibiotic susceptibility to metronidazole, amoxicillin, tetracycline and clarithromycin was defined by E-test. Thirty-nine patients received a two-week quadruple culture-guided therapy defined by the protocol, which considered sensitivity data and previous allergies to antibiotics (one culture was contaminated, one patient refused treatment and one was allergic to tetracycline and amoxicillin and was resistant to metronidazole and clarithromycin). Compliance was monitored by pill counting and eradication was defined as a negative urea breath test six weeks after the end of treatment. RESULTS Sensitivity data were obtained in 41 patients. Intention-to-treat analysis revealed that overall eradication was achieved in 60% (24/40). Eighteen strains (43.9%) were resistant to metronidazole, 21 (51.2%) were resistant to clarithromycin and 8 (19.5%) were resistant to both drugs. None of the strains were resistant to amoxicillin or tetracycline. We used mainly two kinds of quadruple therapy in the 39 patients. Despite good compliance with treatment based on omeprazole (20 mg/12 h), bismuth subcitrate (120 mg/6 h), tetracycline (500 mg/4 h) and clarithromycin (500 mg/ 12 h) (OBTC) eradication was achieved in only 9 of 19 patients (47.4%; CI: 24.4-71.1) (one patient failed to attend the urea breath test). Nineteen clarithromycin-resistant patients received amoxicillin (1,000 mg/12 h) instead of clarithromycin (OBTA) and this treatment was effective in 14 (73.7%; CI: 48.8-90.9). Eradication was achieved in one patient who was allergic to amoxicillin and resistant to clarithromycin and metronidazole and who received ciprofloxacin (500 mg/8 h) instead of clarithromycin (OBTCipro). No clinical factors associated with eradication failure were found. CONCLUSIONS Despite the use of two-week, high-dose, quadruple and culture-guided combinations of drugs, a third treatment was frequently unsuccessful. The lowest eradication rate was obtained in patients with H. pylori strains sensitive to all antibiotics; therefore, we believe that other factors could influence eradication rates. New prospective and randomized studies are needed in this subgroup of patients to find effective treatments.
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Clinical Trial |
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8
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Torres C, Escobar S, Portillo A, Torres L, Rezusta A, Ruiz-Larrea F, Revillo MJ, Aspiroz C, Zarazaga M. Detection of clonally related vanB2-containing Enterococcus faecium strains in two Spanish hospitals. J Med Microbiol 2006; 55:1237-1243. [PMID: 16914654 DOI: 10.1099/jmm.0.46560-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to characterize the resistance mechanism in four clinical and five intestinal vancomycin-resistant Enterococcus faecium strains with VanB phenotype recovered from unrelated patients confined in two Spanish hospitals and to determine their clonal relationships. MIC values for vancomycin and teicoplanin were 16–32 and 0.5 μg ml−1, respectively. The mechanism of vancomycin resistance, as well as the genetic environment of the implicated gene, was analysed by PCR and sequencing. The vanB2 gene was detected in all nine E. faecium strains and the intergenic vanS
B–Y
B region showed the characteristic mutations of the vanB2 subtype. Two possibly related PFGE patterns, A (seven strains) and B (two strains), were distinguished among these enterococci. The vanX
B–ORFC intergenic region was amplified in the nine strains and two amino acid changes were detected in the protein encoded by the vanX
B gene in strains of pattern A with respect to those of pattern B. The vanB2 gene cluster was integrated into Tn5382 in all nine strains, being pbp5 gene-linked to this transposon. The ant(6′)-Ia, aph(3′)-IIIa and erm(B) genes were also detected in all of the strains. Both isolates with PFGE pattern B contained the esp gene. In summary, vanB2-containing E. faecium strains with indistinguishable PFGE patterns were recovered from seven patients from two Spanish hospitals.
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22 |
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Rezusta A, Gilaberte Y, Betran A, Gene J, Querol I, Arias M, Revillo MJ. Tinea nigra: a rare imported infection. J Eur Acad Dermatol Venereol 2010; 24:89-91. [DOI: 10.1111/j.1468-3083.2009.03300.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Ruiz E, Rezusta A, Sáenz Y, Rocha-Gracia R, Vinué L, Vindel A, Villuendas C, Azañedo ML, Monforte ML, Revillo MJ, Torres C. New genetic environments of aac(6')-Ib-cr gene in a multiresistant Klebsiella oxytoca strain causing an outbreak in a pediatric intensive care unit. Diagn Microbiol Infect Dis 2011; 69:236-8. [PMID: 21251575 DOI: 10.1016/j.diagmicrobio.2010.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2010] [Revised: 08/26/2010] [Accepted: 09/03/2010] [Indexed: 11/28/2022]
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Research Support, Non-U.S. Gov't |
14 |
15 |
11
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Rezusta A, de la Fuente S, Gilaberte Y, Vidal-García M, Alcalá L, López-Calleja A, Ruiz MA, Revillo MJ. Evaluation of incubation time for dermatophytes cultures. Mycoses 2016; 59:416-8. [DOI: 10.1111/myc.12484] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Revised: 09/13/2015] [Accepted: 01/28/2016] [Indexed: 11/28/2022]
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12
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Betrán A, Villuendas MC, Rezusta A, Moles B, Rubio MC, Revillo MJ, Boiron P, Bello S, Rodríguez-Nava V. Cavitary pneumonia caused by Nocardia otitidiscaviarum. Braz J Microbiol 2010; 41:329-32. [PMID: 24031500 PMCID: PMC3768688 DOI: 10.1590/s1517-838220100002000011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2009] [Accepted: 10/06/2009] [Indexed: 03/04/2023] Open
Abstract
We report a case of cavitary pneumonia caused by N. otitidiscaviarum in a man with diabetes mellitus and thrombocytopenia treated with systemic corticosteroid. Taxonomic identification involved phenotypic testing and molecular identification that was carried out by DNA sequencing of the 16SrRNA gene.
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Journal Article |
15 |
4 |
13
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López-Calleja AI, Lezcano MA, Samper S, de Juan F, Revillo MJ. Mycobacterium malmoense lymphadenitis in Spain: first two cases in immunocompetent patients. Eur J Clin Microbiol Infect Dis 2004; 23:567-9. [PMID: 15257445 DOI: 10.1007/s10096-004-1142-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Reported here are two cases of Mycobacterium malmoense lymphadenitis that occurred in two immunocompetent children in Spain. To the best of our knowledge, these are the first documented cases of extrapulmonary infection by M. malmoense in Spain. This report serves to draw attention to this emerging nontuberculous mycobacterium that is gaining increasing recognition as a pulmonary and extrapulmonary pathogen in different countries.
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14
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Rezusta A, Betrán A, Querol I, Palacián MP, Revillo MJ. Tinea capitis caused by Trichophyton soudanense and Microsporum audouinii in an adult: a case report. Mycoses 2011; 54:89-90. [PMID: 19712077 DOI: 10.1111/j.1439-0507.2009.01749.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This report presents a rare case of tinea capitis caused by Trichophyton soudanense and Microsporum audouinii in a 31-year-old woman from Senegal. The patient showed atrophic skin lesions causing cicatricial alopecia, scarring being caused by two aetiological agents uncommon in Spain.
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Letter |
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4 |
15
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Revillo MJ, Ruiz MA, Uriel B, García-Zueco JC, García-Moya JB. [Acute gastroenteritis caused by urease positive Vibrio parahaemolyticus in an immunocompromised patient]. Enferm Infecc Microbiol Clin 2000; 18:143-4. [PMID: 10905019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
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Case Reports |
25 |
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16
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López AI, Ferrer I, Revillo MJ, Torres L, Sardaña J, García-Moya JB. [Urinary infection caused by Enterococcus faecalis with a mucoid morphotype]. Enferm Infecc Microbiol Clin 2001; 19:36-7. [PMID: 11256250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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Case Reports |
24 |
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17
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López-Calleja AI, Lezcano MA, Vitoria MA, Iglesias MJ, Cebollada A, Lafoz C, Gavin P, Aristimuño L, Revillo MJ, Martin C, Samper S. Genotyping of Mycobacterium tuberculosis over two periods: a changing scenario for tuberculosis transmission. Int J Tuberc Lung Dis 2007; 11:1080-1086. [PMID: 17945064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
OBJECTIVE To evaluate changes in the molecular epidemiology of tuberculosis (TB) in Zaragoza, Spain, over a decade that has seen large social and health changes, including the attenuation of the human immunodeficiency virus (HIV) epidemic and increased immigration. DESIGN A population-based molecular study was conducted using standard restriction fragment length polymorphism IS6110 typing that included all patients with bacteriologically confirmed TB living in the Zaragoza area from 2001 to 2004. The current situation was compared with that described in a previous study from 1993 to 1995. RESULTS A total of 454 Mycobacterium tuberculosis isolates were genotyped; 239 (52.6%) were grouped in 45 clusters composed of 2 to 85 isolates. Independent risk factors for clustering were identified. The main differences with the previous study were the increase of TB cases among immigrants, a decrease in HIV-TB co-infected patients and the occurrence of a large TB outbreak involving 85 patients (M. tuberculosis Zaragoza [MTZ] strain). CONCLUSION A change in the epidemiological pattern of TB has been observed in the last years. TB transmission is more common among the Spanish-born population, while foreign birth is significantly less associated with clustering. A single epidemic strain caused 18.7% of all TB cases.
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18
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Torres L, Pérez JB, Lezcano MA, Revillo MJ. [Is it necessary to add a fourth drug to the initial treatment of tuberculosis?]. Med Clin (Barc) 2001; 116:637-8. [PMID: 11412655 DOI: 10.1016/s0025-7753(01)71930-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Bouza E, Dominguez A, Meseguer M, Buzon L, Boixeda D, Revillo M, De Rafael L, Beltran JM. The Authors’ Reply. Am J Clin Pathol 1981. [DOI: 10.1093/ajcp/76.4.506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Terraza S, Ramos C, Revillo MJ, Gracia M, Vitoria I, Moles B. [Pulmonary infection by Nocardia farcinica]. Enferm Infecc Microbiol Clin 1999; 17:258-9. [PMID: 10396099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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Case Reports |
26 |
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21
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Sicilia B, Sierra E, Revillo MJ, Navarro M, Gomollón F. [Multidrug-resistant Salmonella a significant clinical problem?]. GASTROENTEROLOGIA Y HEPATOLOGIA 1999; 22:342-4. [PMID: 10535206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
The incidence of infections caused by Salmonella strains resistant to antibiotics, including ampicillin, chloramphenicol, streptomycin, sulfonamides, tetracycline and even amoxicyllin-clavulanate, is increasing. We present two cases that illustrate the potential severity of infections caused by multidrug-resistant Salmonella and also the difficulty of reaching a differential diagnosis with inflammatory bowel disease.
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Case Reports |
26 |
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