Patent blue V 2.5% solution for injection 2ml ampoules

BackgroundAnaphylaxis is a constant perioperative concern due to the exposure to several agents capable of inducing hypersensitivity reactions. Patent blue V (PBV), also known as Sulfan Blue, a synthetic dye used in sentinel node research in breast surgery, is responsible for 0.6% of reported anaphylactic conditions. We present a case of a 49-year-old female patient who underwent left breast tumorectomy with sentinel lymph node staging using PBV and experienced an anaphylactic reaction.MethodsWe conducted a literature search through PubMed for case reports, case series, reviews, and systematic reviews since 2005 with the keywords "anaphylaxis" and "patent blue". We then included articles found in these publications' reference sections.ResultsWe found 12 relevant publications regarding this topic. The main findings are summarized, with information regarding the clinical presentation, management, and investigation protocol. Hypotension is the most common clinical manifestation. The presentation is usually delayed when compared with anaphylaxis from other agents, and cutaneous manifestations are occasionally absent. Patients may have had previous exposure to the dye, used also as a food, clothes and drug colorant.ConclusionThe diagnosis of anaphylaxis in patients under sedation or general anesthesia may be difficult due to particularities of the perioperative context. According to the published literature, the presentation of the reaction is similar in most cases and a heightened clinical sense is key to address the situation appropriately. Finding the agent responsible for the allergic reaction is of paramount importance to prevent future episodes.

Abstract licence: CC BY-NC-ND

This review presents an overview regarding the electrochemical investigation of food colorants. The focus is given to the theoretical foundations lying behind sensing interface preparation, detection mechanisms, advantages, and limitations of electrochemical techniques used for food dye analysis, based on some of the most relevant and insightful studies available in the literature. The discussion places particular emphasis on recent advances in electrochemical methods for detecting Azorubine (CR), Sunset Yellow FCF (SY), Tartrazine (TR), Brilliant Blue FCF (BB), Quinoline Yellow (QY), Patent Blue V (PBV), Indigo carmine (IC), Rhodamine B (RhB), Allura Red AC (AR), and Amaranth (AM). Special attention is given to studies demonstrating the practical applications, namely real food sample analysis, and efforts aimed at the simultaneous detection of multiple dyes with a single electroanalytical platform. We provide up-to-date information related to practical electrochemical sensing of food dyes, followed by recommendations for future research in this field.

Abstract licence: CC BY-NC-ND

Cyclin-dependent kinase 5 (CDK5) is a critical regulator of neuronal development and function, whose hyperactivation exacerbates neurodegenerative disorders and certain cancers. While CDK5 is a compelling therapeutic target, achieving selective inhibition is challenging due to high structural homology with cell-cycle CDKs and poor blood-brain barrier penetrance. The article provides the first comprehensive analysis of patented CDK5 inhibitors disclosed between 1999 and 2025. We examine the chemical diversity, selectivity profiles, and therapeutic claims of major chemotypes, including purine analogs (e.g., roscovitine), pyrazole derivatives (e.g., dinaciclib, milciclib), indolobenzazepinones, indirubin derivatives, and emerging modalities such as peptides. Furthermore, we discuss major obstacles such as overcoming off-target toxicity against other CDKs, ensuring sufficient CNS exposure, and identifying reliable biomarkers. Lastly, we speculate on how future success will depend on new strategies such as p25-specific modulation, targeted protein degradation, and advanced delivery systems to translate CDK5' therapeutic potential into the clinic.

Abstract licence: CC BY