Detection of Acanthamoeba spp. in two major water reservoirs in the Philippines

Water reservoirs are important manmade structures providing water security to deliver clean and safe water for drinking and other purposes to the community. Eighty water samples were collected from Magat and Ipo water reservoirs using purposive sampling between November 2018 and January 2019. Water samples were collected in sterile containers for testing. The samples were cultured in nonnutrient agar and lawned with Escherichia coli and incubated at 33 °C. Twelve out of the 80 (15%) water samples were positive for amoebic growth. Light and scanning electron microscopy (SEM) revealed double-walled cystic stages and were initially identified as Acanthamoeba spp. based on morphological characteristic in reference to Page’s established criteria. Their extracted DNAs were used in polymerase chain reaction using JDP1 and JDP2 primers and confirmed the presence of Acanthamoeba DNA in agarose gel electrophoresis. Aligned sequences from PCR products were deposited in GenBank under accession numbers MK886460, MK909919, MK905437, MK910997, MK911021 and MK886514. The presence of potentially pathogenic Acanthamoeba spp. in water reservoirs is considered a potential risk for public health, requiring appropriate processing of water in treatment plants

Bibliometric analysis of breast cancer research in the period 2009–2018

Aim: The aim of this study was to carry out a bibliometric analysis of breast cancer studies in the field of nursing conducted between 2009 and 2018 and to reveal the trends, dynamics and scientific outputs in the field. Methods: A bibliometric analysis was performed using CiteSpace II software to determine the characteristics of research incorporated in the international citation indexes and published in breast cancer research in the context of nursing studies. In the Web of Science database, the subjects of breast cancer and nursing were selected, and a total of 2,734 articles published in the last decade were reviewed. Results: There was an increase in the number of publications after 2014. The United States had the highest level of country collaborations and the highest degree of centrality. The most densely researched topic in the largest subject cluster was breast cancer. The most commonly used keywords were breast cancer, quality of life and women. Conclusion: Breast cancer research in the field of nursing has increased in the last decade, and the United States ranked first in terms of publications in this nursing field. © 2020 John Wiley & Sons Australia, Lt