International Microbiology Journal Impact Factor & Information

Publisher: Sociedad Española de Microbiología, Hemeroteca Científica Catalana

Journal description

International Microbiology, the official journal of the Spanish Society for Microbiology (SEM), aims to advance and disseminate information in the fields of basic and applied microbiology among microbiologists around the world. The journal publishes two kinds of contributions: Articles (original research and short reviews) and Complements (perspectives, opinion, book reviews, editorials, etc). A feature of International Microbiology that distinguishes it from many other microbiology journals is a broadening of the term ''microbiology'' to include eukaryotic microorganisms, as well as the publication of articles about microbiologists and their work and questions related to the history and sociology of this science. It offers short publication times and a complete copy-editing service. The journal encourages submissions in the following areas: Microorganisms (viruses, prokaryotes, protists, moulds, yeast); Microbial biology (taxonomy, genetics, morphology, physiology, ecology, pathogenesis); Microbial applications (environmental, soil, industrial, food and medical microbiology, biodeterioration, bioremediation, biotechnology); State of the art of microbiology in different regions of the world; Outstanding microbiologists; Microbiology and education; The history and sociology of microbiology.

Current impact factor: 1.33

Impact Factor Rankings

2015 Impact Factor Available summer 2016
2014 Impact Factor 1.326
2013 Impact Factor 1.341
2012 Impact Factor 2.556
2011 Impact Factor 1.8
2010 Impact Factor 1.635
2009 Impact Factor 1.8
2008 Impact Factor 2.197
2007 Impact Factor 2.617
2006 Impact Factor 2.455
2005 Impact Factor 1.868

Impact factor over time

Impact factor

Additional details

5-year impact 2.10
Cited half-life 9.80
Immediacy index 0.00
Eigenfactor 0.00
Article influence 0.61
Website International Microbiology website
Other titles International microbiology (Online)
ISSN 1139-6709
OCLC 48268850
Material type Document, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publisher details

Hemeroteca Científica Catalana

  • Pre-print
    • Author cannot archive a pre-print version
  • Post-print
    • Author can archive a post-print version
  • Conditions
    • Creative Commons Attribution Non-Commercial Share Alike 3.0 España License
    • On a non-profit server
    • Published source must be acknowledged
    • Must link to publisher version
    • Publisher's version/PDF may be used
    • All titles are open access journals
    • This policy is an exception to the default policies of 'Hemeroteca Científica Catalana'
  • Classification
    ​ blue

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Biofilm development is characterized by distinct stages of initial attachment, microcolony formation and maturation (sessile cells), and final detachment (dispersal of new, planktonic cells). In this work we examined the influence of polyhydroxyalkanoate (PHA) accumulation on bacterial surface properties and biofilm formation on polystyrene in detached vs. planktonic cells of an environmental strain isolated from microbial mats, Halomonas venusta MAT28. This strain was cultured either in an artificial biofilm in which the cells were immobilized on alginate beads (sessile) or as free-swimming (planktonic) cells. For the two modes of growth, conditions allowing or preventing PHA accumulation were established. Cells detached from alginate beads and their planktonic counterparts were used to study cell surface properties and cellular adhesion on polystyrene. Detached cells showed a slightly higher affinity than planktonic cells for chloroform (Lewis-acid) and a greater hydrophobicity (affinity for hexadecane and hexane). Those surface characteristics of the detached cells may explain their better adhesion on polystyrene compared to planktonic cells. Adhesion to polystyrene was not significantly different between H. venusta cells that had accumulated PHA vs. those that did not. These observations suggest that the surface properties of detached cells clearly differ from those of planktonic cells and that for at least the first 48 h after detachment from alginate beads H. venusta retained the capacity of sessile cells to adhere to polystyrene and to form a biofilm. © 2015 Sociedad Espanola de Microbiologia. All rights reserved.
    International Microbiology 09/2015; 17(4):205-212. DOI:10.2436/20.1501.01.223
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    ABSTRACT: Knowledge in viral oncology has made considerable progress in the field of cancer fight. However, the role of bacteria as mediators of oncogenesis has not yet been elucidated. As cancer still is the leading cause of death in developed countries, understanding the long-term effects of bacteria has become of great importance as a possible means of cancer prevention. This study reports that Chlamydia pneumoniae infection induce transformation of human mesothelial cells. Mes1 cells infected with C. pneumoniae at a multiplicity of infection of 4 inclusion-forming units/cell showed many intracellular inclusion bodies. After a 7-day infection an increased proliferative activity was also observed. Real-time PCR analysis revealed a strong induction of calretinin, Wilms' tumour gene 1, osteopontin, matrix metalloproteinases-2, and membrane-type 1 metal-loproteinases gene expression in Mes1 cell, infected for a longer period (14 days). The results were confirmed by western blot analysis. Zymography analysis showed that C. pneumoniae modulated the in-vitro secretion of MMP-2 in Mes1 cells both at 7 and 14 days. Cell invasion, as measured by matrigel-coated filter, increased after 7 and 14 days infection with C. pneumoniae, compared with uninfected Mes1 cells. The results of this study suggest that C. pneumoniae infection might support cellular transformation, thus increasing lung cancer risk. © 2015 Sociedad Espanola de Microbiologia. All rights reserved.
    International Microbiology 09/2015; 17(4):185-193. DOI:10.2436/20.1501.01.221
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    ABSTRACT: We evaluated the genetic stabilization of artificial intra- (Saccharomyces cerevisiae) and interspecific (S. cerevisiae × S. kudriavzevii) hybrids under wine fermentative conditions. Large-scale transitions in genome size and genome reorganizations were observed during this process. Interspecific hybrids seem to need fewer generations to reach genetic stability than intraspecific hybrids. The largest number of molecular patterns recovered among the derived clones was observed for intraspecific hybrids, particularly for those obtained by rare-mating. Molecular marker analyses revealed that unstable clones could change during the industrial process to obtain active dry yeast. When no changes in molecular markers and ploidy were observed after this process, no changes in genetic composition were confirmed by comparative genome hybridization, considering the clone as a stable hybrid. According to our results, under these conditions, fermentation steps 3 and 5 (30–50 generations) would suffice to obtain genetically stable interspecific and intraspecific hybrids, respectively. © 2015 Sociedad Espanola de Microbiologia. All rights reserved.
    International Microbiology 09/2015; 17(4):213-224. DOI:10.2436/20.1501.01.224
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    ABSTRACT: Hepatitis C virus (HCV) is one of the major causes of chronic hepatitis, cirrhosis, and hepatocellular carcinoma, and the development of HCV-related disease is accelerated in individuals coinfected with human immunodeficiency-1 virus (HIV). In the present study, we correlated different host single-nucleotide polymorphisms (SNPs) in the IL28B, CTLA4, LDLr, and HFE genes and mitochondrial DNA (mtDNA) haplogroups with the outcome of HCV infection and the response to pegylated-interferon plus ribavirin (pegIFN-RBV) treatment. Our study population consisted of 63 Majorcan patients coinfected with HCV and HIV and 59 anonymous unrelated controls. Whereas the population frequency of IL28B alleles was similar to that found in a North-American cohort of European descent, the frequency of the rs12979860 C allele was lower than that determined in other cohorts from Spain. The frequencies of CTLA4 and LDLr polymorphisms were comparable to those reported in other populations. Significant differences between cases and control cohorts occurred only for the H63D mutation of the HFE gene. There were no other differences in the frequencies of other polymorphisms or mtDNA haplogroups. The IL28B rs12979860 CC genotype was shown to be associated with a rapid virological response, and the spontaneous viral clearance rate for HCV was higher in patients with the CTLA4+49 G allele. There was no relationship between SNPs in the LDLr and HFE genes and mtDNA haplogroups and the response to treatment. Our results suggest that the host genetic background plays a significant role in the pegIFN-RBV response of patients coinfected with HCV and HIV.
    International Microbiology 03/2014; 17(1):11-20. DOI:10.2436/20.1501.01.203
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    ABSTRACT: Fungal strains naturally occurring on the wood and leaves of the salt-excreting desert tree Tamarix were isolated and characterized for their ability to produce cellulose- and starch-degrading enzymes. Of the 100 isolates, six fungal species were identified by ITS1 sequence analysis. No significant differences were observed among taxa isolated from wood samples of different Tamarix species, while highly salt-tolerant forms related to the genus Scopulariopsis (an anamorphic ascomycete) occurred only on the phylloplane of T. aphylla. All strains had cellulase and amylase activities, but the production of these enzymes was highest in strain D, a Schizophyllum-commune-related form. This strain, when grown on pretreated Tamarix biomass, produced an enzymatic complex containing levels of filter paperase (414 +/- 16 IU/ml) that were higher than those of other S. commune strains. The enzyme complex was used to hydrolyze different lignocellulosic substrates, resulting in a saccharification rate ofpretreated milk thistle (73.5 +/- 1.2%) that was only 10% lower than that obtained with commercial cellulases. Our results support the use of Tamarix biomass as a useful source of cellulolytic and amylolytic fungi and as a good feedstock for the economical production of commercially relevant cellulases and amylases.
    International Microbiology 03/2014; 17(1):41-8.
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    ABSTRACT: The term amyloidosis is used to refer to a family of pathologies altering the homeostasis of human organs. Despite having a name that alludes to starch content, the amyloid accumulations are made up of proteins that polymerize as long and rigid fibers. Amyloid proteins vary widely with respect to their amino acid sequences but they share similarities in their quaternary structure; the amyloid fibers are enriched in beta-sheets arranged perpendicular to the axis of the fiber. This structural feature provides great robustness, remarkable stability, and insolubility. In addition, amyloid proteins specifically stain with certain dyes such as Congo red and thioflavin-T. The aggregation into amyloid fibers, however, it is not restricted to pathogenic processes, rather it seems to be widely distributed among proteins and polypeptides. Amyloid fibers are present in insects, fungi and bacteria, and they are important in maintaining the homeostasis of the organism. Such findings have motivated the use of the term "functional amyloid" to differentiate these amyloid proteins from their toxic siblings. This review focuses on systems that have evolved in bacteria that control the expression and assembly of amyloid proteins on cell surfaces, such that the robustness of amyloid proteins are used towards a beneficial end.
    International Microbiology 01/2014; 17(2):65-73. DOI:10.2436/20.1501.01.208
  • International Microbiology 01/2014;
  • International Microbiology 01/2014; 17(1):41-48. DOI:10.2436/20.1501.01.206
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    ABSTRACT: A specific and sensitive multiplex PCR (mPCR) method was developed as a useful tool for the simultaneous detection of two important flatfish pathogens in marine aquaculture, Tenacibaculum maritimum and Edwardsiella tarda. In fish tissues, the average detection limit for these mPCR-amplified organisms was 2 x 10(5) +/- 0.2 CFU/g and 4 x 10(5) +/- 0.3 CFU/g, respectively. These values are similar or even lower than those previously obtained using the corresponding single PCR. Moreover, mPCR did not produce any nonspecific amplification products when tested against 36 taxonomically related and unrelated strains belonging to 33 different bacterial species. Large amounts of DNA from one of the target bacterial species in the presence of low amounts from the other did not have a significant effect on the amplification sensitivity of the latter.
    International Microbiology 01/2014; 17(2):111-117. DOI:10.2436/20.1501.01.213