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Antimicrobial effects of propolis on Clostridium difficile strains belonging to the different PCR-ribotypes

100%

Piotrowski M. , Pituch H. , Obuch-Woszczatyński P.

Annales Universitatis Mariae Curie-Sklodowska, sectio C – Biologia

2016

tom 71

nr 2

Clostridium difficile is a Gram-positive, anaerobic rod-shaped bacterium, which is a primary cause of nosocomial diarrhoea. The rising incidence of antibiotic resistance in pathogens such as C. difﬁcile makes the new antibacterial natural products research very important and necessary to conduct. It has been observed that propolis has bactericidal effects. Propolis is a natural resinous product that is manufactured by honeybees (Apis mellifera). The antimicrobial activity of propolis is an important biological property. In spite of the large composition differences of the propolis types, all of them have antimicrobial activity. Twenty strains of the C.difficile belonging to four prominent PCR-ribotypes (RT) (RT017, RT023, RT027, and RT046) were used in research. MBC value were determined by broth dilution method. Propolis samples were obtained from honey bees farm in lubelskie woyevodship. Bactericidal effect of the propolis on C.difficile strains was observed at its concentration of 39 mg/ml.

Social Media and Task Performance: Does Being Online distract task completion?

100%

Piotrowski M. , Ślebarska K. , Buszman K.

The New Educational Review

2022

tom 67

249-260

At present, social media are connected with education. Both influence daily life and studying since they impact formal and informal relations. This study explores the role of social media in task performance. Based on Mackworth’s clock test, we experimented with university students (N=54), which assessed their capacity to concentrate on the task when exposed to notifications from social networking. We explored whether the appearance of social media notifications regarding different stimulus properties (i.e., sound and vision) lowered cognitive resource capacity to concentrate on the main task. The findings revealed that the mere presence of notifications affected task performance. However, the focal relationship was more complex.