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<abstract> <p>Improper use of antibiotics to treat or prevent infections, and as a stimulant for livestock growth, can affect public health and the dairy industry due to the spread of antibiotic residues in milk. This systematic review and meta-analysis aimed to investigate antibiotic residues in raw and pasteurized milk in Iran. Data were collected through searching the databases, including Scopus, PubMed, Science Direct, Web of Science, Google Scholar, SID, and Magiran using the following keywords: "pasteurized milk", "raw milk", "milk", "antibiotic residues", " antibiotic", and "Iran". Finally, 40 eligible studies were selected for the systematic review and meta-analysis. According to the reviewed studies, the prevalence of antibiotic residues in raw and pasteurized milk was 26% (95% CI: 20–33%) and 21% (95% CI: 15-27%), respectively. It seems that the control measures are inefficient in dairy industry and milk collection centers for the presence of antibiotic residues and the time of antibiotic withdrawal during milk delivery. Permanent control of milk in the collection centers by the responsible organizations along with implementation of Hazard Analysis Critical Control Point system in milk factories can be very effective in reducing antibiotic residues.</p> </abstract>

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Objective Antiplatelet drugs, such as Aspirin and Clopidogrel (Plavix) are effective in the primary prevention of thromboembolic events. They are commonly used to reduce the risk of recurrence of thromboembolism. The body’s hemostatic system responds differently to these drugs in different people. Resistance testing for aspirin and Clopidogrel is now recommended before starting antiplatelet therapy. Methods A systematic literature search was performed on May 12, 2021, using the medical search engines PubMed, Scopus, and Web of Science, and the local databases SID and Magiran. After data extraction, a meta-analysis was performed using Comprehensive Meta-Analysis (CMA2) software. The I2 statistic was used to measure heterogeneity between estimates. Results Among the 949 papers, Clopidogrel resistance was assessed in 136 patients and Aspirin resistance in 400 patients. The prevalence of Aspirin resistance was found to be 52.1% and the prevalence of Clopidogrel resistance was found to be 20.5%. Conclusion It seems that in Iran, the issue of Aspirin and Clopidogrel resistance is suboptimally addressed. This pattern could also occur in other developing countries in the Middle East region.

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