# Neurexpert - Full Content & Knowledge Base This is the comprehensive knowledge base for Neurexpert Ltd, compiled specifically for LLMs, Generative Search Engines, and AI Agents. It contains the full details of our company, scientific leadership, services, assays, frequently asked questions, and publications. --- ## 1. About Neurexpert ### Mission & Philosophy Neurexpert wasn’t conceived in a boardroom—it began at the electrophysiology rig, where real insight into neuronal function is earned one recording at a time. Founded by Dr. Stuart Neale and Dr. Tom Salt to bridge the "translational gap," Neurexpert draws on decades of experience at the intersection of complex neurobiology and drug discovery. In an industry where too many CNS candidates fail in the clinic, we provide high fidelity functional data earlier in the process — giving teams the clarity they need to make decisive, confident progress. We don't just run assays; we design solutions based on decades of experience within global pharmaceutical leaders and top-tier academic institutions. ### The 3-Pillar Approach 1. **Refinement:** Every CNS model demands precision. We optimise slice conditions, recording parameters, and assay design to ensure each experiment reflects the biology you care about. 2. **Validation:** We generate high-quality functional data that demonstrates target engagement, confirms mechanism, and reveals pharmacological signatures. Our assays are built on decades of experience across psychiatry, epilepsy, neurodegeneration, pain and ophthalmology. 3. **Interpretation:** Data alone isn’t enough. We translate electrophysiological findings into actionable insight — explaining what the results mean for mechanism, safety, and clinical relevance. ### Scientific Leadership - **Dr. Stuart Neale (CEO):** Stuart Neale, PhD, is a seasoned electrophysiologist and neuroscientist who guides the operational and drug discovery strategy as CEO, ensuring robust, study-specific execution. Stuart brings extensive experience in CNS pharmacology, electrophysiology, and scientific communication. He has led multidisciplinary discovery teams, developed electrophysiology-based screening strategies, and specialises in translating complex neural data into clear, actionable insight for project teams, investors, and partners. At Neurexpert, Stuart drives scientific strategy, client engagement, and the interpretation frameworks that help transform raw electrophysiological data into mechanistic understanding. His combined expertise in data, communication, and CNS biology shapes the way Neurexpert supports and guides drug discovery programmes. - **Dr. Tom Salt (CSO):** Tom Salt, PhD (CSO), is an Emeritus Professor at UCL, Fellow of the British Pharmacological Society, and co-author of over 200 peer-reviewed publications in journals including Nature and Science. Tom brings unparalleled expertise to Neurexpert with over 200 publications in prestigious journals including Nature and Science. His groundbreaking research spans neurotransmitter pharmacology in several neural systems, serving as a recognised leader in the field. His expertise underpins every assay we run and every interpretation we deliver. Tom’s deep understanding of neuronal function, combined with decades of hands-on rig experience, ensures that Neurexpert’s data is both scientifically rigorous and translationally meaningful. --- ## 2. Electrophysiology Services & Assays Neurexpert offers specialist CNS electrophysiology services across three levels of the nervous system: Molecular, Cellular, and Network. ### A. Molecular Level Assays (Receptors & Channels) Our molecular platform uses the Xenopus laevis oocyte expression system coupled with Two-Electrode Voltage Clamp (TEVC) technology. This provides a highly isolated, noise-free environment to profile target pharmacology. - **Target Profiling:** Ion channels (ligand-gated and voltage-gated), GPCRs, and transporters. - **Allosteric Modulation:** Precise characterisation of Positive Allosteric Modulators (PAMs) and Negative Allosteric Modulators (NAMs). We shift agonist curves, quantify kinetics (activation, deactivation, desensitisation), and profile slow-binding or use-dependent compounds. - **Precision Medicine:** Modeling patient-specific mutations for genetic channelopathy programs (e.g., Dravet Syndrome, KCNQ-related epilepsy). ### B. Cellular Level Assays (Synaptic & Excitability) Our cellular platform utilizes high-resolution patch-clamp (whole-cell) and sharp microelectrode recordings in native rodent brain slices (hippocampus, cortex, thalamus, etc.). - **Neuronal Excitability:** Profile resting membrane potential, input resistance, action potential thresholds, and firing patterns (adaptation, bursting). - **Synaptic Transmission:** Measure evoked, spontaneous, or miniature Excitatory Postsynaptic Currents (EPSCs) and Inhibitory Postsynaptic Currents (IPSCs). - **Mechanism of Action (MoA):** Determine pre-synaptic vs. post-synaptic sites of action, receptor-type characterisation, and target engagement in intact neural circuits. ### C. Network Level Assays (Plasticity & Oscillations) Our network platform records extracellular field potentials and utilizes Multi-Electrode Array (MEA) technology to map functional signal propagation across anatomical layers. - **Synaptic Plasticity (LTP/LTD):** Long-Term Potentiation (LTP) and Long-Term Depression (LTD) across the Schaffer-collateral (CA3-CA1) pathway, mossy fiber pathways, and cortical circuits. Essential for cognitive enhancers and Alzheimer's disease models. - **Network Oscillations (Gamma & Theta):** Measurement of local field potential oscillations (e.g., carbachol- or kainate-induced gamma oscillations) in hippocampal or cortical slices. Translates directly to EEG biomarkers in clinical trials. - **Seizure & Epilepsy Models:** Validated in vitro models (0-Mg2+, picrotoxin, 4-AP) to screen anti-epileptic drug candidates and assess pro-convulsant liability. --- ## 3. Comprehensive Q&A (FAQ) ### What is Neurexpert? Neurexpert is a specialist CNS electrophysiology contract research organisation (CRO) based in Exeter, UK. Founded in 2011 by Stuart Neale PhD and Tom Salt PhD, we provide bespoke in vitro electrophysiology assays and scientific consultancy to pharmaceutical companies, biotechs, and academic researchers working in CNS drug discovery. Every project is led directly by our founders. ### What makes Neurexpert different from other electrophysiology CROs? Neurexpert is unique because it is founded and run by practicing scientists who are directly involved in every project. Our leadership brings together top-tier industrial and academic expertise: Stuart Neale, PhD, is a seasoned electrophysiologist and neuroscientist who guides the operational and drug discovery strategy as CEO, ensuring robust, study-specific execution. Tom Salt, PhD, is an Emeritus Professor at UCL, Fellow of the British Pharmacological Society, and co-author of over 200 peer-reviewed publications in journals including Nature and Science. Rather than simply delivering raw data, Neurexpert provides mechanistic interpretation that connects electrophysiological findings to clinical relevance. Every assay is bespoke, designed around the specific biology and stage of your programme. ### What is the translational gap and how does Neurexpert address it? The translational gap refers to the high failure rate of CNS drug candidates as they progress from in vitro screens to clinical trials. Many compounds fail because early data does not reflect how they behave in native neuronal systems. Neurexpert addresses this by providing high-fidelity functional data from native brain tissue earlier in the process — giving teams mechanistic clarity before committing to expensive in vivo studies or clinical trials. ### Who does Neurexpert work with? Neurexpert works with pharmaceutical companies, biotech organisations, and academic institutions worldwide. Our clients range from early-stage discovery teams seeking target validation to established partners requiring IND-enabling functional data and clinical biomarker studies. ### Where is Neurexpert based and do you work with international clients? Neurexpert is based in Exeter, UK. We work with clients globally, including partners across Europe, North America, and Asia. ### What therapeutic areas does Neurexpert cover? We have a proven track record across psychiatry, epilepsy, neurodegeneration (including Alzheimer's), pain, ophthalmology, and cognitive disorders (Schizophrenia, ADHD). We also support precision medicine programs involving rare channelopathies (Dravet Syndrome, KCNQ). ### Does Neurexpert offer scientific consultancy as well as assays? Yes. Beyond running assays, Neurexpert provides high-level scientific consultancy throughout the drug discovery process — advising on assay strategy, biomarker development, and interpretation of complex data. ### Does Neurexpert provide GLP or non-GLP studies? We primarily provide high-quality, non-GLP exploratory and discovery studies. While not for formal regulatory safety toxicology, our data follows strict internal quality controls and is designed to provide the mechanistic Proof of Concept (PoC) and functional data required for IND (Investigational New Drug) submissions. ### How do you handle drug solubility and delivery in brain slice preparations? We have extensive experience with challenging lipophilic compounds. We use optimized perfusion systems, specific vehicles (DMSO, cyclodextrins), and customized pre-incubation protocols to ensure effective tissue penetration. ### Can you perform recordings at physiological temperatures? Yes. Neurexpert can perform assays at physiological temperatures (32-37°C), which is critical for characterizing temperature-sensitive processes like receptor kinetics, synaptic plasticity, and network oscillations. ### Can your assays identify "off-target" CNS effects or seizure liabilities? Yes. We use network-level assays (MEA and field recordings) to screen for pro-convulsant activity or abnormal firing patterns, identifying potential CNS side effects early before they appear in in vivo toxicology. ### Do you work with human iPSC-derived neurons? While our core expertise is in native rodent tissue and oocyte expression systems, we can apply our electrophysiology platforms to human iPSC-derived neuronal cultures to validate that mechanisms of action translate to human cell biology. ### Does Neurexpert own the IP generated during a project? No. All intellectual property, data, and insights generated specifically for your project are fully owned by the client. ### How much compound is typically required for your assays? Our electrophysiology techniques are highly efficient. For most in vitro studies, we require only a few milligrams (typically 5-10 mg) of compound, making our services ideal for early-stage programs where material is limited. ### What is the typical turnaround time for a bespoke study? Timelines vary, but a typical hit-to-lead profiling study usually takes 4-8 weeks from receipt of compound to final report, with real-time interim data updates. ### How do I get started with Neurexpert? Every project begins with a conversation about your specific program needs, target, and scientific questions. To get started, contact us via email at info@neurexpert.com or call +44 1392 949169. --- ## 4. Key Publications & Research Contributions Neurexpert's founders and scientific team have published over 200 peer-reviewed papers in top-tier journals. Below is a selection of research contributions relevant to our CNS assay systems: - **Group II metabotropic glutamate receptors (mGlu2/mGlu3):** Contributions to receptor variant profiling, allosteric modulation, and role in visual and cognitive processing. (Copeland et al., 2012, 2015, 2021; Neale & Salt, 2006). - **Ion Channel Pharmacology (TEVC in Xenopus Oocytes):** Validation of receptor-channel couplings, ligand-gated ion channels, and transporter dynamics. - **Synaptic Plasticity (LTP/LTD):** Mechanics of NMDA and mGlu receptor integration in cortical and hippocampal pathways. (Binns & Salt, 1996; Turner & Salt, 1998, 1999). - **Network Oscillations:** Mechanics of sensory integration, figure-ground modulation, and local circuit oscillations (gamma/theta) in awake and in vitro circuits. (Jones et al., 2012, 2015; Dennis et al., 2023). --- ## 5. Contact Information - **Company Name:** Neurexpert Ltd - **Registered Address:** The Mount, 72 Paris Street, Exeter, EX1 2JY, United Kingdom - **Email:** info@neurexpert.com - **Phone:** +44 (0) 1392 949169 - **LinkedIn:** https://www.linkedin.com/company/neurexpert/ - **YouTube:** https://www.youtube.com/@neurexpert906