Autor: Olender, Alina - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Human infections caused by free-living amoebae
Autorzy:: Król-Turmińska, Katarzyna
Olender, Alina
Tematy:: acanthamoeba
naegleriafowleri
balamuthia mandrillaris
amebiasis
protozoal infections; Pokaż więcej
Wydawca:: Instytut Medycyny Wsi
Powiązania:: https://bibliotekanauki.pl/articles/989767.pdf Link otwiera się w nowym oknie
Opis:: Introduction. Among free-living amoebae that are widely distributed in nature only four genera/species are known as agents of human infections: Acanthamoeba spp., Naegleriafowleri, Balamuthia mandrillaris and Sappiniapedata. These amoebae are not well adapted to parasitism, and could exist in the human environment without the need for a host. Infections due to these amoebae, despite low morbidity, are characterized by relatively high mortality rate and pose serious clinical problems. Objectve. This review study presents and summarizes current knowledge about infections due to pathogenic and opportunistic free-living amoebae focused on epidemiology, clinical manifestations, diagnosis and treatment based on global literature. State of knowledge. All four genera have been recognized as etiologic factors of fatal central nervous system infections and other serious diseases in humans. N. fowleri causes an acute fulminating meningoencephalitis in children and young adults. Acanthamoeba spp. and B.mandrillaris are opportunistic pathogens causing granulomatous amoebic encephalitis and disseminated or localized infections which could affect the skin, sinuses, lungs, adrenals and/or bones. Acanthamoeba spp. is also the main agent of acute eye infection – Acanthamoeba keratitis, mostly in contact lens wearers. However, there is only one recognized case of encephalitis caused by S. pedata. Conclusions. Amoebic diseases are difficult to diagnose which leads to delayed treatment, and result in a high mortality rate. Considering those issues, there is an urgent need to draw more attention to this type of diseases.
Dostawca treści:: Biblioteka Nauki

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Tytuł:: The role of opportunistic Corynebacterium spp. in human infections
Autorzy:: Olender, Alina
Bogut, Agnieszka
Bańska, Agata
Tematy:: coryneform
diphtheroids
opportunistic corynebacteria; Pokaż więcej
Wydawca:: Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Powiązania:: https://bibliotekanauki.pl/articles/454925.pdf Link otwiera się w nowym oknie
Opis:: Introduction. The non-diphtherial corynebacteria (diphtheroids, “coryneform” bacteria) have been increasingly recognized as causative agents of human infections. Aim. To provide an overview of the role of non-diphtherial Corynebacterium species in human infections. Material and methods. Analysis of the literature data found in the PubMed database. Results. The role of diphtheroids - inherently low-virulent microorganisms considered members of the human microbiota – as potential pathogens has been linked to specific risk factors including immunosuppression, implantation of biomaterials and invasive medical procedures. Their pathogenic potential is primarily associated with frequent multidrug resistance, the ability to adhere to biotic and abiotic surfaces and/or to form biofilm as well as with internalization, intracellular survival and persistence within human cells. The most common infections include bacteremia, sepsis, endocarditis, meningitis, urinary tract infections, respiratory tract infections, wound and skin infections, and endophthalmitis. The leading species are C. jeikeium, C. striatum, C. urealyticum, C. amycolatum, and C. pseudodiphtheriticum. Conclusion. Opportunistic corynebacteria can be responsible for a wide range of infections which can be expected to increase in frequency in the future due to an enlarging population of patients with predisposing risk factors but also due to the increasing problem of antibiotic resistance in this group of bacteria.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Differentiation of Bacillus anthracis and other Bacillus cereus group bacterial strains using multilocus sequence typing method
Autorzy:: Graniak, Grzegorz
Olender, Alina
Naylor, Katarzyna
Tematy:: Bacillus cereus group
multilocus sequence typing
sequencing
housekeeping genes
phylogenetic differentiation
BioNumerics; Pokaż więcej
Wydawca:: Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Powiązania:: https://bibliotekanauki.pl/articles/1024269.pdf Link otwiera się w nowym oknie
Opis:: The study describes the preparation of the phylogenetic differentiation of Bacillus cereus strains. The Bacillus cereus group of bacteria is very important for human and animal health. The multilocus sequence typing scheme has been used to present this group of bacteria’s phylogenetic relationship and structure. The MLST system was established using 60 isolates of B. anthracis, B. cereus sensu stricto, B. thuringiensis, and transitional environment strains of Bacillus spp. As a negative control, five strains of B. subtilis and B. megaterium were used. Primers for amplification and sequencing were designed to target highly conserved internal fragment of seven housekeeping genes: glpF, gmk, ilvD, pta, pur, pycA, and tpi. A total of 22 different sequence types (STs) were distinguished. Analysis of the sequence data showed that all of the Bacillus cereus strains are very closely related. The MLST scheme exhibited a high level of resolution that can be used as an excellent tool for studying the phylogenetic relationship, epidemiology, and population structure of the Bacillus cereus group strains. The MLST method additionally allows us to define the phylogenetic relationship between very closely related strains based on a combination of the sequences of all seven alleles fragments and each of them separately. Thus, this genetic investigation tool is very useful in epidemiological investigation of potential military/ bioterrorist use of B. anthracis.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Air transport and the spread of infectious diseases
Autorzy:: Kulczyński, Marcin
Tomaszewski, Mateusz
Łuniewski, Michał
Olender, Alina
Tematy:: MERS
West Nile Virus
air transport
aircraft
airport
aviation
infectious diseases
influenza
pandemic
tuberculosis; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1179535.pdf Link otwiera się w nowym oknie
Opis:: Dynamically growing number of airline passengers and flights, especially intercontinental ones, is a key factor conducive to the spread of infectious diseases. The threat to public health may be even more noticeable if it is taken into account, that the developing countries record larger increase in air traffic than most European high developed states with good sanitary conditions. The aim of the study is to make a review of the literature concerning risk assessment and ways to prevent transmission of infectious diseases aboard civil aircrafts. Airline-associated spread of infectious diseases can refer to airborne and vector-borne diseases, as well as these transmitted by fecal-oral route. The particular danger of rapid spread of a disease through airline passengers is caused by influenza virus strains with the potential for causing pandemics or coronaviruses that are infectious agents of MERS and SARS. Passengers suffering from active tuberculosis are also a reason of a serious epidemiological concern. Also other airborne diseases like measles can be easily transmitted by air transport when travelling from endemic countries. On the other hand, flight-related food poisonings are less and less frequent – the most common cause are still bacteria of the Salmonella genus. Among vector-borne diseases, particular attention is paid to the problem of possible transfer of mosquitoes infected with West Nile Virus. In the prevention of the spread of communicable diseases via air transport, there are important factors such as: efficient identifying of sick travellers and crew members, use of personal protective equipment (such as masks with HEPA filter) by passengers travelling alongside sick person, efficient ventilation inside the passenger cabin, proper disinfection of aircrafts' interiors, vaccination of cabin crews against influenza and proper preparation and handling of catering provided to aircrafts.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Influenza vaccination among healthcare workers – realization, promotion
Autorzy:: Tomaszewski, Mateusz
Łuniewski, Michał
Kulczyński, Marcin
Olender, Alina
Tematy:: Vaccines
healthcare workers
infectious disease prevention
influenza; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1179527.pdf Link otwiera się w nowym oknie
Opis:: Influenza vaccination is the most important component of prevention of occurring and spreading of this disease. 80% vaccination coverage of healthcare personnel provides a substantial reduction of transmission; each and every next vaccinated person results in a decrease of morbidity, especially amongst elder or immunocompromised patients. In the analyzed studies most common reasons of insufficient vaccination coverage among healthcare workers were fear of side effects, lack of knowledge, conviction of vaccine inefficiency, lack of feeling of social responsibility, and inadequate accessibility of vaccine. Healthcare workers who were vaccinated regularly did it mostly in order to provide safety to themselves, their relatives and patients; they did it also due to the knowledge of vaccination efficiency. The most effective actions to improve vaccination coverage were: vaccination requirement by the employer, active encouragement, effective promotion, better vaccine accessibility and promotion of vaccination as prosocial behavior. Offering surgical masks as an alternative did not improve vaccination rate in most analyzed studies. In conclusion, most important reasons of declining influenza vaccination by healthcare workers are lack of knowledge and low accessibility of vaccination, so evidently education, promotion and facilitating the vaccination in workplace are the most effective ways causing the growth of vaccination rate.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Bordetella pertussis – the returning pathogen
Autorzy:: Łuniewski, Michał
Kulczyński, Marcin
Tomaszewski, Mateusz
Olender, Alina
Tematy:: Bordetella pertussis
epidemiology
outbreak
vaccine
whooping cough; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1179529.pdf Link otwiera się w nowym oknie
Opis:: Bordetella pertussis is a non-motile, Gram-negative coccobacillus belonging to the genus Bordetella. It is the causative agent of pertussis – a respiratory tract infection also known as whooping cough or 100-days’ cough. A similar bacterium, Bordetella parapertussis, is responsible for a proportion of pertussis cases, which are distinguished by milder symptoms. Two major virulence factors of Bordetella pertussis are adhesins (filamentous hemagglutinin and fimbriae) which facilitate tracheal colonization – the first step leading to infection. In pediatric population B. pertussis infection tends to take a highly unpredictable and sometimes fatal course. Antimicrobial drugs of macrolide class are the mainstay of therapy mainly due to their superb activity against Bordetella pertussis. However, antibiotic administration is ineffective in alleviating symptoms of whooping cough. Therefore, in the first half of the 20th century there was a collective effort of scientific community to create an efficient vaccine against B. pertussis. These endeavors proved fruitful and culminated in the implementation of vaccination programs since 1940s. Despite the widespread availability of vaccines, pertussis remains a significant cause of children morbidity to this day. Epidemiological data gathered in Poland during the last 10 years clearly imply that the disease incidence is steadily increasing. Furthermore, pertussis outbreaks, which happened every few years in the past, nowadays occur almost every other year. The reasons behind the alarming resurgence of pertussis are multifold, but two elements are presumed to play a key role: the waning immunity of adolescents who were vaccinated many years ago; and the parents’ reluctance to vaccinate their offspring. On account of the steady growing number of pertussis cases, the definite causes of the current epidemiological state ought to be determined and an adequate approach to combat theses reasons must be undertaken.
Dostawca treści:: Biblioteka Nauki

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