Development and validation of a tool to assess researchers' knowledge of human subjects' rights and their attitudes toward research ethics education in Saudi Arabia.

Background: Researchers must adhere to ethical and scientific standards in their research involving human subjects; therefore, their knowledge of human subjects' rights is essential. A tool to measure the extent of this knowledge is necessary to ensure that studies with participants are conducted ethically and to enhance research integrity. Currently, no validated instrument is available for such an assessment.

Health information on social media. Perceptions, attitudes, and practices of patients and their companions.

To assess social media and search engines used to find health information in Saudi patients and their companions and to describe their perceptions, attitudes, and practices. Methods: A cross-sectional study was carried out on 374 patients and their companions at a tertiary care hospital in Riyadh, Saudi Arabia. The data were collected between January and March 2018 using a self-administrated questionnaire adopted from the literature and developed in Arabic.

Effects of lipid-esterified conjugated linoleic acid isomers on platelet function: evidence for stimulation of platelet phospholipase activity.

The effects of four conjugated linoleic acid (CLA) isomers on in vitro collagen-induced human platelet aggregation and thromboxane (TXB(2), the inactive metabolite of the proaggregatory TXA(2)) production were examined. As the free fatty acid (FFA), 9t, 11t-CLA was the most effective inhibitor of these two processes (I(50)s of 2.2 and 4 microM, respectively) and the 9c, 11c-CLA was the least effective (I(50)s of 8.