# Differential Effects of Oleoyl Serine and HU-910 on Anxiety and Depression Behaviors > **Author:** Benjamin Caplan, MD (ABFM Board Certified, MA Lic. #240562, NPI: 1962722637) > **Publisher:** CED Clinic (https://cedclinic.com) > **Canonical URL:** https://cedclinic.com/oleoyl-serine-depression-anxiety-effects-wky-rats/ > **Published:** 2026-04-14T07:02:20-04:00 | **Last Modified / Clinically Audited:** 2026-09-28T15:56:19-04:00 > **Clinical Summary:** Explore oleoyl serine depression anxiety effects and HU-910 impacts on male and female WKY rats in this clinical study of endocannabinoid-like lipids. --- CED Clinical Relevance  #72Notable Clinical Interest  Emerging findings or policy developments worth monitoring closely. 🔬 Evidence Watch  |  CED Clinic Journal International journal of molecular sciences Study Type Clinical Study Population Human participants Why This Matters This item covers developments relevant to [cannabis medicine](https://cedclinic.com/essential-oils-industrial-hemp-antimicrobial-benefits/) and [clinical practice](https://cedclinic.com/cannabis-reproductive-health-women-clinical-evidence/). Clinicians monitoring evidence in this area should review the source material. Clinical Summary The role of the [endocannabinoid system](https://cedclinic.com/endocannabinoid-system-fear-extinction/) (ECS) in the development of depression and anxiety is being actively studied, with evidence suggesting that elevation of ECS signaling can have anxiolytic and antidepressant properties. The current study explored the therapeutic potential of Oleoyl Serine (OS), an endocannabinoid-like lipid, and HU-910, a synthetic selective Cannabinoid type 2 (CB2) receptors agonist, in depression and anxiety, using both sexes of the depressive-like genetic model: Wistar Kyoto (WKY) rats. The aim was to investigate behavioral and molecular mechanisms associated with acute and sub-chronic intraperitoneal administration of these compounds. We showed that, in females, acutely administered OS yielded antidepressant-like and anxiolytic-like effects in the Forced Swim Test (FST) and Open Field Test (OFT), respectively. In males, OS yielded acute and sub-chronic anxiolytic-like effects. HU-910 yielded an acute anxiolytic-like effect in females and an acute antidepressan Dr. Caplan’s Take “This is a development worth tracking. The clinical implications will become clearer as more evidence accumulates.” Clinical Perspective 🧠 Clinicians should review this item in the context of their current practice and patient population. 💬 Join the Conversation Have a question about how this applies to your situation? [Ask Dr. Caplan →](https://benjamincaplan.com/ask-dr-caplan) Want to discuss this topic with other patients and caregivers? [Join the forum discussion →](https://cedclinic.com/interact/discussion-forums/forum/cannabis-industry/) Have thoughts on this? Share it: [𝕏 Share on X](https://twitter.com/intent/tweet?text=Just%20read%20this%20on%20CEDclinic.com%3A%20Differential%20Effects%20of%20Oleoyl%20Serine%20and%20HU-910%20on%20Anxiety-like%20and%20Depression-...%20%40drcaplan&url=https%3A//pubmed.ncbi.nlm.nih.gov/41977358/)[in Share on LinkedIn](https://www.linkedin.com/sharing/share-offsite/?url=https%3A//pubmed.ncbi.nlm.nih.gov/41977358/)[🦥 Share on BlueSky](https://bsky.app/intent/compose?text=Just%20read%20this%3A%20Differential%20Effects%20of%20Oleoyl%20Serine%20and%20HU-910%20on%20Anxiety-like%20and%20Depression-...%20--%20via%20%40drcaplan.bsky.social%20https%3A//pubmed.ncbi.nlm.nih.gov/41977358/)[📷 Follow on Instagram](https://www.instagram.com/drbenjamincaplan/)[📝 Read more on Substack](https://substack.com/@doctorapproved)[🔔 Subscribe via RSS](https://cedclinic.com/category/cannabis-news/feed/) 📰 Source: [https://pubmed.ncbi.nlm.nih.gov/41977358/](https://pubmed.ncbi.nlm.nih.gov/41977358/) Table of Contents - [FAQ](#FAQ)[What are Oleoyl Serine and HU-910?](#What_are_Oleoyl_Serine_and_HU-910) - [Was this study done in people or in animals?](#Was_this_study_done_in_people_or_in_animals) - [Why are researchers studying the endocannabinoid system for depression and anxiety?](#Why_are_researchers_studying_the_endocannabinoid_system_for_depression_and_anxiety) - [Did Oleoyl Serine affect male and female rats differently?](#Did_Oleoyl_Serine_affect_male_and_female_rats_differently) - [Related](#Related) ## FAQ ### What are Oleoyl Serine and HU-910? Oleoyl Serine (OS) is an endocannabinoid-like lipid, and HU-910 is a synthetic compound that selectively activates cannabinoid type 2 (CB2) receptors. This study explored the therapeutic potential of both compounds for depression and anxiety in an animal model. ### Was this study done in people or in animals? It was done in animals. The experiments used both male and female Wistar Kyoto (WKY) rats, a genetic model of depressive-like behavior. Researchers examined the behavioral and molecular effects of acute and sub-chronic intraperitoneal administration of the compounds. The summary does not report any results in humans. ### Why are researchers studying the endocannabinoid system for depression and anxiety? The role of the [endocannabinoid system](https://cedclinic.com/endocannabinoid-system-fear-extinction/) in the development of depression and anxiety is being actively studied. According to the summary, evidence suggests that raising endocannabinoid system signaling can have anxiolytic and antidepressant properties, which is the rationale for testing compounds like these. ### Did Oleoyl Serine affect male and female rats differently? Yes. In females, acutely administered OS produced antidepressant-like effects in the Forced Swim Test and anxiolytic-like effects in the Open Field Test. In males, OS produced anxiolytic-like effects with both acute and sub-chronic administration. These are behavioral effects measured in rats. [https://cedclinic.com/contact/](https://cedclinic.com/contact/) Physician-Led, Whole-Person Care A doctor who takes the time to truly understand you. Personal care that starts with listening and is guided by experience and ingenuity. Health, Longevity, Wellness One-on-One Cannabis Guidance Metabolic Balance [Leave a Message](https://cedclinic.com/contact/) [Metabolic Care](https://cedclinic.com/metabolic/metabolic-how-it-works/) [Medical Consulting](https://cedclinic.com/book/) [Cannabis Care](https://cedclinic.com/book/) [https://cedclinic.com/contact/](https://cedclinic.com/contact/) RELATED READING AT CED CLINIC Continue exploring the evidence [New Clinical Insights on Cannabis and Patient Outcomes](https://cedclinic.com/new-clinical-insights-on-cannabis-and-patient-outcomes/) Explore recent clinical findings on cannabis and its impact on patient outcomes relevant to anxiety and depression. [Read More](https://cedclinic.com/new-clinical-insights-on-cannabis-and-patient-outcomes/) [What Cannabis Does to Your Brain in the First 24 Hours – Verywell Health](https://cedclinic.com/cannabis-brain-effects-evidence-first-24-hours/) Understand the acute effects of cannabis on brain function, relevant to mood and [anxiety disorders](https://cedclinic.com/adolescent-cannabis-use-and-anxiety-research/). [Learn More](https://cedclinic.com/cannabis-brain-effects-evidence-first-24-hours/) [Preoperative Cannabis Use and Postoperative Delirium in Older Adults Undergoing Major …](https://cedclinic.com/preoperative-cannabis-use-older-adults-postoperative-delirium/) Review clinical evidence on [cannabis use](https://cedclinic.com/cannabis-cardiovascular-health-insights-2024/) and its implications for mental health and cognitive outcomes in older adults. [Explore Study](https://cedclinic.com/preoperative-cannabis-use-older-adults-postoperative-delirium/) ### Related --- ### Verification & Medical Governance - **Lead Clinical Author:** Benjamin Caplan, MD - **Credentials:** Board Certified in Family Medicine (ABFM), Former CMO Canna Care Docs (250,000+ patients supervised), Founder & CMO CED Clinic & CED Foundation, Author of *The Doctor-Approved Cannabis Handbook* (Penguin Random House). - **Clinical Scale:** 350,000+ lifetime evaluations overseen; 81,008-patient Real-World Evidence Registry (`~/.ced_rwe_vault.db`); 125,000+ peer-reviewed study literature observatory (`http://localhost:8768/api/explorer/terminal`). - **License Verification:** Commonwealth of Massachusetts License #240562 (https://checkahealthlicense.mass.gov/). - **NPI Registry:** 1962722637 (https://npiregistry.cms.hhs.gov/provider-view/1962722637). - **Ethics & Data Privacy:** Clinical registry observations adhere strictly to HIPAA Safe Harbor de-identification (45 CFR § 164.514(b)) and criteria for secondary research exemption under 45 CFR § 46.104(d)(4).