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Pharmacovigilance is important to monitor the safety of drugs. There are, however, problems with the quality of adverse drug reaction reports in China. This study aimed to analyze the quality of adverse drug reaction reports in China, identify the factors affecting it, and propose measures to improve it. In our study, the western province of Shaanxi, the central province of Hubei and the eastern province of Jiangsu were chosen as typical, and adverse drug reaction reports from these three provinces from 2015 to 2017 were systematically sampled. The sampling reports were scored and graded to assess their quality. The results showed that only 10.18% were considered high quality in a total of 3429 reports. There were statistically significant differences in quality by year, province, report type, report source, and occupation of the reporter (p < 0.001). Reports from Shaanxi were slightly poorer quality, and "new" and "serious" reports and those from pharmacists were higher quality. Five indicators were particularly poor quality: patient information, adverse drug reaction, reporter information, drug information and vigilance. In conclusion, the quality of adverse drug reaction reports in China still needs improvement. Factors affecting quality included timing, location, report type, report source, and reporter's occupation. It may be helpful to publicize the importance of monitoring adverse drug reactions and improve the knowledge of reporters.

Background Adverse drug reactions (ADRs) cause a substantial clinical and economic burden. Spontaneous reporting of ADRs by the public is crucial. In some developed countries like the United States, Canada, consumers have been allowed to directly report ADRs, however, convenient channels for direct ADR reporting by the public are lacking in China. Objective We aimed to compare the knowledge, attitudes, and practice(KAP) regarding monitoring and reporting of adverse drug reaction (ADR) among the general public in eastern and western China. Methods A questionnaire-guided cross-sectional study was administered to participants in Nanjing and Xi’an during April–July 2019. A descriptive statistical analysis was used to describe respondents’ demographic information and other results. The t-test and analysis of variance were used to test the differences in knowledge and attitudes among respondents with different demographic characteristics. P < 0.05 was considered statistically significant. Binary logistic regression analysis was used to examine factors associated with knowledge and attitudes. Results A total of 1085 questionnaires were distributed in this survey, 869 valid questionnaires were returned, the recovery rate was 80.09%. Respondents showed poor knowledge of the definition of ADRs and reporting criteria, with a significant difference in average knowledge scores according to education level, gender, and age group. Most respondents had positive attitudes toward ADR monitoring and reporting, with no significant differences in knowledge and attitude scores between the two cities. In total, 68.93% of respondents said they would feedback information to health care professionals, most (84.35%) would take the initiative to report ADRs if there were a convenient method. More than half (58.57%) of respondents were more likely to report ADRs by telephone. Conclusion The findings of our study indicated that health care professionals should encourage patients to actively report ADR. China should also explore ways to facilitate direct public reporting of ADRs by improving relevant laws and regulations.

Western blotting (WB) is one of the most widely used techniques to identify proteins as well as post translational modifications of proteins. The selection of electroblotted membrane is one of the key factors affecting the detection sensitivity of the protein which is transferred from gel to membrane in WB. The most common used membranes are polyvinylidene fluoride (PVDF) and nitrocellulose (NC) membranes. Which membrane of these two is more suitable for WB has not been reported so far. Here, by incubating proteins which were transferred to PVDF or NC membranes with a series of antibodies and different types of lectins, we investigated the relationship between the binding ability of these two membranes to proteins or glycoproteins and the molecular weight of the target protein. The antibody re-probed ability of the two membranes was also explored. Moreover, we verified the above results by directly incubating proteins having different molecular weights onto PVDF or NC membranes. Bound proteins were stained with direct blue-71, and the staining intensity was quantitated by scanning and densitometry.

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