Acute pancreatitis (AP) is a severe inflammatory disorder of the pancreas, characterized by high morbidity and mortality rates. Despite significant advancements in understanding the pathophysiological mechanisms of AP, current treatment options still face considerable limitations. Recent studies have underscored the therapeutic potential of quercetin, a natural flavonoid, due to its potent antioxidant, anti-inflammatory, and immunomodulatory properties, positioning it as a promising therapeutic candidate for AP. This review explores the effects of quercetin on AP, highlighting its antioxidant activities, its role in immune modulation, and its protective effects on pancreatic tissue. Furthermore, it examines quercetin’s multi-target mechanisms and its advantages over conventional therapies, such as N-acetylcysteine and corticosteroids. Although preliminary studies suggest that quercetin can alleviate inflammation and oxidative stress in AP, clinical evidence remains limited. One of the main challenges for quercetin’s clinical application is its low bioavailability. Future research should focus on strategies to enhance its bioavailability and on conducting large-scale randomized controlled trials to more comprehensively assess its efficacy and safety in the treatment of AP.

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The continuous accumulation of micro- and nanoplastics in the human living environment and their deposition in various organs of the body have become a global public health concern with the widespread use of plastic products. This review summarizes the main categories of micro- and nanoplastics entering the body through dietary intake and air inhalation, based on human exposure pathways. By integrating existing literature data, this review estimates the daily intake and excretion of micro- and nanoplastics in humans, summarizes evidence regarding their potential deposition patterns in blood cells and hematopoietic-related organs, mainly inferred from animal and in vitro studies, and discusses the possible impacts of such deposition on hematopoietic function. Furthermore, the toxic effects and potential hazards of micro- and nanoplastics on the human hematopoietic system at both cellular and animal levels, along with the underlying molecular mechanisms, are comprehensively reviewed. From the dual perspectives of environmental governance and bodily protection, exploratory research ideas are proposed, including biodegradation strategies and the application of medicinal and edible homologous substances. This review aims to provide insights for reducing the risk of hematopoietic system diseases and preventing harm caused by micro- and nanoplastics to the human body in the future.