Psychological well-being of healthcare workers during COVID-19: Relationship with risk perception and fear in the context of health belief model.

This study aimed to evaluate the extent of fear and risk perception related to COVID-19 and their impact on the psychological well-being of healthcare workers. Data were gathered through an online survey, incorporating questions about risk perception utilizing the health belief model, the Fear of COVID-19 Scale, and the General Health Questionnaire-12. A total of 364 HCWs participated in the survey, with 94% of participants identified as being in the high-risk category for mental disorders based on their General Health Questionnaire scores. The assessment of COVID-19-related risk perception within the Health Belief Model demonstrated significant correlations between perceived susceptibility, perceived severity, perceived barriers, and self-efficacy with both the fear scale and General Health Questionnaire scores. Linear regression was employed to identify factors influencing General Health Questionnaire scores, revealing that risk perception, Fear of COVID-19 scores, marital status, and perceived health were significantly associated with General Health Questionnaire scores. These findings underscore the importance of monitoring the psychological well-being of healthcare workers throughout all stages of pandemic preparedness and response.

Delivery of pemetrexed by magnetic nanoparticles: design, characterization, in vitro and in vivo assessment.

Drug-loaded magnetic nanoparticles have been developed because of the advantages of specific drug targeting in cancer treatment. Pemetrexed (PEM) is a multi-targeting antifolate agent that is effective for the treatment of many cancers, for example, non-small cell lung cancer. Here, PEM loaded magnetic O-carboxymethyl chitosan (O-CMC) nanoparticles were prepared to deliver PEM on tumor tissue with an external magnetic field. The modification of chitosan to O-CMC was confirmed by FTIR analysis. Nanoparticle synthesis was performed via ionic gelation method. The diameter of magnetic O-CMC nanoparticles (MCMC) was found to be 130.1 ± 22.96 nm. After PEM loading, diameter was found to be 123.9 ± 11.42 nm. The drug release of PEM loaded MCMC (PMCMC) was slower in physiological medium than in acidic medium. A549-luc-C8 and CRL5807 cell lines were used for MTT test which showed that IC50 values of nanoparticles were lower than PEM. The antitumor efficiency of PMCMC in xenograft tumor model was examined with in vivo imaging system (IVIS) and caliper and with hematological analyses. In vivo studies revealed that PMCMC had targeted antitumor activity in A549-luc-C8-tumor-bearing mice compared to PEM. As a result, it was suggested that PMCMC have great potential for the treatment of non-small cell lung cancer.