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Postępy Mikrobiologii - Advancements of Microbiology

Polish Society of Microbiologists

Subject: Microbiology

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ISSN: 0079-4252
eISSN: 2545-3149

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FEATURED ARTICLES

VOLUME 56 , ISSUE 2 (April 2017) - List of articles

PROBIOTICS AND MAMMALIAN GASTROINTESTINAL IMMUNE SYSTEM

Beata Tokarz-Deptuła/ Wiesław Deptuła

Probiotics are microorganisms that provide health benefits when consumed. These are also food supplements or food products containing specified probiotic microorganisms. Probiotic microorganisms colonize the gastrointestinal tract of the host environment, reducing the risk of pathogenic bacteria growth and their potential impact on the regulation of host immune responses. They also have the ability to eliminate pathogenic bacteria. The administration of probiotic microorganisms in addition to ch(..)

DOI: 10.21307/PM-2017.56.2.157

MICROFLORA AND PARASITOFAUNA OF ALIEN AND INVASIVE TURTLE SPECIES

Olga Goławska/ Magdalena Zając/ Dariusz Wasyl/ Marta Demkowska-Kutrzepa/ Ewa Borzym/ Paweł Różański/ Artur Rzeżutka

Invasiveness of alien turtles results from their impact on the functioning of the local ecosystem. It is due to predation on or competing with resident species, but also transfer of new and unknown pathogenic bacteria, viruses, parasites, or fungi. Salmonella is the most often reported microorganism, both in free-living and captive turtles. Zoonotic aspect of Salmonella spp. carriage has led to the definition of RAS (Reptile Associated Salmonellosis) acquired from domestic pet reptiles. Mycobact(..)

DOI: 10.21307/PM-2017.56.2.163

BACTERIAL METALLOTHIONEINS

Agnieszka Mierek-Adamska/ Wioleta Tylman-Mojżeszek/ Zuzanna Znajewska/ Grażyna B. Dąbrowska

Heavy metals are found in all living organisms where, as indispensable microelements (e.g. zinc, iron, copper), are involved in endless metabolic processes. However, living organisms are also at a risk of exposure to highly toxic metals, including cadmium or lead, which do not play any physiological role. Among multiple mechanisms associated with the maintenance of micronutrient homeostasis and detoxification of unwanted metals, there is a family of low-molecular-weight, cysteine-rich proteins, (..)

DOI: 10.21307/PM-2017.56.2.171

PATHOGENICITY OF LACTOBACILLUS SP. – RISK FACTORS, IDENTIFICATION, ANTIBIOTIC RESISTANCE

Marta Kłos

Lactobacilli are found in the mucous membrane of the mouth, in the gastrointestinal tract (GIT) and in the genitourinary tract. It is known that lactobacilli have a beneficial effect on our health and are used in the production of fermented milk, yoghurts, cheese, and probiotics. However, in this article I show that lactic acid bacteria also cause many diseases. Lactobacilli produce lactic acid which acidifies the environment. There are some factors increasing the risk of infection caused by lac(..)

DOI: 10.21307/PM-2017.56.2.180

FRANCISELLA TULARENSIS – A DECEITFUL PATHOGEN

Kamila Formińska/ Aleksandra Anna Zasada

Francisella tularensis is an intracellular bacterial pathogen which causes a potentially lethal disease named tularemia. Some studies have been conducted to describe and identify the virulence factors of F. tularensis. This pathogen is able to infect a variety of cells of various hosts, including wild animals, especially rabbits, hares and rodents, and humans. This may suggest that genes of F. tularensis must adapt to many different intraorganismal environments. Still, little is known about the (..)

DOI: 10.21307/PM-2017.56.2.187

FACTORS DETERMING THE ADHESIVE CAPACITY OF LACTOBACILLUS BACTERIA

Anna Paliwoda/ Adriana Nowak

The ability of Lactobacillus to adhere to the intestinal epithelium is one of the most important criterion in the selection of probiotic strains. Adherence allows microorganisms to survive and temporarily colonize the digestive system, which is necessary to induce beneficial effects on the host. Adhesion is a very complex, multistep process and, although there are many proposed theories, the exact mechanism is still not fully understood. A crucial role in the formation of the adhesive interactio(..)

DOI: 10.21307/PM-2017.56.2.196

NON-PANDEMIC HUMAN CORONAVIRUSES – CHARACTERISTICS AND DIAGNOSTICS

Edyta Abramczuk/ Katarzyna Pancer/ Włodzimierz Gut/ Bogumiła Litwińska

In this article, the characteristics of human coronaviruses (HCoV) are presented. Currently, six human coronaviruses are known: HCoV-229E, HCoV-OC43, HCoV-NL63, HCoV-HKU1, HCoV-SARS and HCoV-MERS. The first human coronaviruses were described in the sixties of the twentieth century, the last one, HCoV-MERS, in 2012 y. Coronaviruses can cause mild, asymptomatic infections as well as severe respiratory diseases, like pneumonia and bronchiolitis. The symptoms of HCoV infection are mainly: fever, nas(..)

DOI: 10.21307/PM-2017.56.2.205

PLASMIDS – VECTORS FOR GENE THERAPY

Piotr Zaleski/ Paweł Wawrzyniak/ Agnieszka Sobolewska/ Grażyna Płucienniczak

The first confirmed transfer of genetic material in human was performed in 1990. Ever since, gene therapy was considered to be one of the best promising treatments of genetic diseases. The sine qua non of successful gene therapy are efficient genetic vectors. Recently, the most frequently used vectors in clinical trials for genetic therapies are virus-based and plasmid-based. A range of features makes plasmids useful for gene therapy, however, they have also some characteristics which make it di(..)

DOI: 10.21307/PM-2017.56.2.214

BACTERIAL MOONLIGHTING PROTEINS

Jagoda Płaczkiewicz

Existence of moonlighting proteins in microorganisms is a known phenomenon, yet still not well understood. Moonlighting proteins have at least two independent biological functions, which must be performed by one polypeptide chain without separation into protein domains. Most of these proteins, beside their role in the cytoplasm, play an important role outside of the cell i.e. they take part in the process of pathogenesis by binding and activating host’s plasminogen. The existence of moonlighting(..)

DOI: 10.21307/PM-2017.56.2.226

COAGULASE-POSITIVE SPECIES OF THE GENUS STAPHYLOCOCCUS – TAXONOMY, PATHOGENICITY

Wioletta Kmieciak/ Eligia Maria Szewczyk

Staphylococci constitute an important component of the human microbiome. Most of them are coagulase-negative species, whose importance in the pathogenesis of human infections has been widely recognized and is being documented on a regular basis. Until recently, the only well-known coagulase-positive staphylococcus species recognized as human pathogen was Staphylococcus aureus. Previously, the ability to produce coagulase was used as its basic diagnostic feature, because other coagulase-positive (..)

DOI: 10.21307/PM-2017.56.2.233

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