Systematic review and health risk assessment of arsenic and lead in the fished shrimps from the Persian gulf

The ingestion of heavy metals through contaminated seafood can causes significant outcomes on human health. In recent years, consume fishes and shrimps has increased in Iran, and several study about heavy metals content in fishes and shrimps from Persian Gulf were carried out to check their food safety. The aims of these systematic reviews and meta-analysis was to summarize the evidence on the relation of the intakes of Arsenic (As) and lead (Pb) levels, based on the origin and sub-groups of shrimp species consumed, Hence that we can estimate the risk of oral cancer induced by Pb and As in these groups of shrimp from the persian gulf. We carried out a search of all suitable studies published between 1995 and 2017 in Scopus, Science Direct, PubMed and Web of Science databases. Since the heterogeneity among studied was significant, we used the random effect model (REM) to perform meta-analysis of data. Data were obtained from 9 articles (14 studies), with 511 samples, and it was reported that pooled levels of As and Pb in the muscle shrimps were 1.37 (95% CI: 0.66–2.08 mg/kg d.w.) and 0.58 (95% CI: 0.33–0.82 mg/kg d.w.), respectively. This pooled levels in muscle shrimps were higher than safe dose reported on Food and Agriculture Organization/World Health Organization guidelines (FAO/WHO). The rank order of shrimps species based on As was Panulirus homarus > Penaeus semisulcatus and for the Pb levels was Litopenaeus vannamei > Panulirus homarus > Fenneropenaeus indicus > Metapenaeus affinis. The lowest and highest risk levels of oral cancer, divided by consumers age groups, were respectively 45–54 (6.94E-04) and 15–24 (8.42E-04) for the Pb, and 45–54 (2.87E-01) and 15–24 (3.51E-01) for arsenic. Incremental Lifetime Cancer Risk (ILCR) of Pb and As was higher than 10-4 and 10-3, respectively. All groups (age) of consumers are subject to the cancer risk of due to the consumption of shrimps contaminated by Pb and As, therefore, should be started a control plan for the reduction of the heavy metal bioaccumulation levels in shrimps of the Persian Gulf coupled to a capillary food safety communication.