go Sleep Apnea Might Raise Odds for Painful Gout By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Sleep Apnea Might Raise Odds for Painful GoutCategory: Health NewsCreated: 8/30/2018 12:00:00 AMLast Editorial Review: 8/30/2018 12:00:00 AM Full Article
go Goats Can Read Human Emotions, Prefer Happy Faces By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Goats Can Read Human Emotions, Prefer Happy FacesCategory: Health NewsCreated: 8/31/2018 12:00:00 AMLast Editorial Review: 8/31/2018 12:00:00 AM Full Article
go Millions of Contigo Kids Cleanable Water Bottles Recalled By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Millions of Contigo Kids Cleanable Water Bottles RecalledCategory: Health NewsCreated: 8/28/2019 12:00:00 AMLast Editorial Review: 8/28/2019 12:00:00 AM Full Article
go Exercise Is Good Medicine for Advanced Colon Cancer By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Exercise Is Good Medicine for Advanced Colon CancerCategory: Health NewsCreated: 8/28/2019 12:00:00 AMLast Editorial Review: 8/28/2019 12:00:00 AM Full Article
go CDC Boosts Efforts to Fight Congo Ebola Outbreak By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: CDC Boosts Efforts to Fight Congo Ebola OutbreakCategory: Health NewsCreated: 8/30/2019 12:00:00 AMLast Editorial Review: 8/30/2019 12:00:00 AM Full Article
go Pentagon to Make COVID Vaccination Mandatory for Military By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Pentagon to Make COVID Vaccination Mandatory for MilitaryCategory: Health NewsCreated: 8/23/2021 12:00:00 AMLast Editorial Review: 8/24/2021 12:00:00 AM Full Article
go Just Starting Exercise in Your 60s? It'll Still Do a World of Good By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Just Starting Exercise in Your 60s? It'll Still Do a World of GoodCategory: Health NewsCreated: 8/25/2021 12:00:00 AMLast Editorial Review: 8/25/2021 12:00:00 AM Full Article
go AHA News: He Got Help F.A.S.T. For His Stroke. His Mother Wasn't as Lucky. By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: AHA News: He Got Help F.A.S.T. For His Stroke. His Mother Wasn't as Lucky.Category: Health NewsCreated: 8/26/2021 12:00:00 AMLast Editorial Review: 8/26/2021 12:00:00 AM Full Article
go Pentagon Says Troops Must Start Lining Up Now for COVID Shots By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: Pentagon Says Troops Must Start Lining Up Now for COVID ShotsCategory: Health NewsCreated: 8/25/2021 12:00:00 AMLast Editorial Review: 8/26/2021 12:00:00 AM Full Article
go AHA News: What Goes Into a Mediterranean Diet, and How to Get Started By www.medicinenet.com Published On :: Mon, 29 Aug 2022 00:00:00 PDT Title: AHA News: What Goes Into a Mediterranean Diet, and How to Get StartedCategory: Health NewsCreated: 8/23/2022 12:00:00 AMLast Editorial Review: 8/23/2022 12:00:00 AM Full Article
go Gout Flare-Ups Could Raise Heart Risk for Weeks After By www.medicinenet.com Published On :: Thu, 4 Aug 2022 00:00:00 PDT Title: Gout Flare-Ups Could Raise Heart Risk for Weeks AfterCategory: Health NewsCreated: 8/3/2022 12:00:00 AMLast Editorial Review: 8/4/2022 12:00:00 AM Full Article
go Breakfast Might Be Good for a Child's Emotional Health, Too By www.medicinenet.com Published On :: Wed, 24 Aug 2022 00:00:00 PDT Title: Breakfast Might Be Good for a Child's Emotional Health, TooCategory: Health NewsCreated: 8/24/2022 12:00:00 AMLast Editorial Review: 8/24/2022 12:00:00 AM Full Article
go What Is Oolong Tea Good For? By www.medicinenet.com Published On :: Fri, 26 Aug 2022 00:00:00 PDT Title: What Is Oolong Tea Good For?Category: Health and LivingCreated: 8/26/2022 12:00:00 AMLast Editorial Review: 8/26/2022 12:00:00 AM Full Article
go Why Is Coconut Oil Good for Your Teeth? By www.medicinenet.com Published On :: Fri, 26 Aug 2022 00:00:00 PDT Title: Why Is Coconut Oil Good for Your Teeth?Category: Health and LivingCreated: 8/26/2022 12:00:00 AMLast Editorial Review: 8/26/2022 12:00:00 AM Full Article
go Are Green Mussels Good for You? By www.medicinenet.com Published On :: Fri, 26 Aug 2022 00:00:00 PDT Title: Are Green Mussels Good for You?Category: Health and LivingCreated: 8/26/2022 12:00:00 AMLast Editorial Review: 8/26/2022 12:00:00 AM Full Article
go U.S. Government Extends Baby Formula Waivers, Rebates for WIC Families By www.medicinenet.com Published On :: Sat, 27 Aug 2022 00:00:00 PDT Title: U.S. Government Extends Baby Formula Waivers, Rebates for WIC FamiliesCategory: Health NewsCreated: 8/25/2022 12:00:00 AMLast Editorial Review: 8/26/2022 12:00:00 AM Full Article
go Are Plant Sterols Good for Lowering Cholesterol? By www.medicinenet.com Published On :: Thu, 12 May 2022 00:00:00 PDT Title: Are Plant Sterols Good for Lowering Cholesterol?Category: Diseases and ConditionsCreated: 5/12/2022 12:00:00 AMLast Editorial Review: 5/12/2022 12:00:00 AM Full Article
go Too Few Psychiatric Beds: Psychiatrists' Group Takes Aim at Ongoing Crisis By www.medicinenet.com Published On :: Thu, 18 Aug 2022 00:00:00 PDT Title: Too Few Psychiatric Beds: Psychiatrists' Group Takes Aim at Ongoing CrisisCategory: Health NewsCreated: 8/17/2022 12:00:00 AMLast Editorial Review: 8/18/2022 12:00:00 AM Full Article
go Qigong Meditation for Beginners: Techniques, Benefits, and More By www.medicinenet.com Published On :: Wed, 24 Aug 2022 00:00:00 PDT Title: Qigong Meditation for Beginners: Techniques, Benefits, and MoreCategory: Health and LivingCreated: 8/24/2022 12:00:00 AMLast Editorial Review: 8/24/2022 12:00:00 AM Full Article
go Too Few U.S. Cities Have Good Hurricane Evacuation Plans By www.medicinenet.com Published On :: Fri, 26 Aug 2022 00:00:00 PDT Title: Too Few U.S. Cities Have Good Hurricane Evacuation PlansCategory: Health NewsCreated: 8/26/2022 12:00:00 AMLast Editorial Review: 8/26/2022 12:00:00 AM Full Article
go 7 Surprising Goat Milk Soap Benefits By www.medicinenet.com Published On :: Fri, 12 Aug 2022 00:00:00 PDT Title: 7 Surprising Goat Milk Soap BenefitsCategory: Health and LivingCreated: 8/12/2022 12:00:00 AMLast Editorial Review: 8/12/2022 12:00:00 AM Full Article
go What Is a Good Height for a Man? By www.medicinenet.com Published On :: Thu, 7 Jul 2022 00:00:00 PDT Title: What Is a Good Height for a Man?Category: Health and LivingCreated: 7/7/2022 12:00:00 AMLast Editorial Review: 7/7/2022 12:00:00 AM Full Article
go Does Tinnitus Ever Go Away? By www.medicinenet.com Published On :: Fri, 3 Jun 2022 00:00:00 PDT Title: Does Tinnitus Ever Go Away?Category: Diseases and ConditionsCreated: 6/3/2022 12:00:00 AMLast Editorial Review: 6/3/2022 12:00:00 AM Full Article
go Will Joint Pain From Menopause Go Away? By www.medicinenet.com Published On :: Tue, 24 May 2022 00:00:00 PDT Title: Will Joint Pain From Menopause Go Away?Category: Diseases and ConditionsCreated: 5/24/2022 12:00:00 AMLast Editorial Review: 5/24/2022 12:00:00 AM Full Article
go goldenseal By www.medicinenet.com Published On :: Thu, 18 Aug 2022 00:00:00 PDT Title: goldensealCategory: MedicationsCreated: 8/18/2022 12:00:00 AMLast Editorial Review: 8/18/2022 12:00:00 AM Full Article
go 'Virtual' Museum Visits Are Good Medicine for Seniors By www.medicinenet.com Published On :: Tue, 16 Aug 2022 00:00:00 PDT Title: 'Virtual' Museum Visits Are Good Medicine for SeniorsCategory: Health NewsCreated: 8/16/2022 12:00:00 AMLast Editorial Review: 8/16/2022 12:00:00 AM Full Article
go gotu kola By www.medicinenet.com Published On :: Thu, 18 Aug 2022 00:00:00 PDT Title: gotu kolaCategory: MedicationsCreated: 8/18/2022 12:00:00 AMLast Editorial Review: 8/18/2022 12:00:00 AM Full Article
go Most Post-Stroke Depression Still Goes Untreated By www.medicinenet.com Published On :: Mon, 25 Jul 2022 00:00:00 PDT Title: Most Post-Stroke Depression Still Goes UntreatedCategory: Health NewsCreated: 7/25/2022 12:00:00 AMLast Editorial Review: 7/25/2022 12:00:00 AM Full Article
go Treating central sleep apnoea in heart failure: is positive airway pressure and adaptive servo-ventilation in particular the gold standard? By err.ersjournals.com Published On :: 2024-10-30T01:30:15-07:00 Extract We read with great interest the review article by Randerath et al. [1] recently published in the European Respiratory Review. We would like to congratulate the authors on this clearly structured review, which emphasises the urgent need for an increasingly differentiated view of central sleep apnoea (CSA) in the context of precision medicine. Full Article
go Targeted and complete genomic sequencing of the major histocompatibility complex in haplotypic form of individual heterozygous samples [RESEARCH] By genome.cshlp.org Published On :: 2024-10-29T06:46:07-07:00 The human major histocompatibility complex (MHC) is a ~4 Mb genomic segment on Chromosome 6 that plays a pivotal role in the immune response. Despite its importance in various traits and diseases, its complex nature makes it challenging to accurately characterize on a routine basis. We present a novel approach allowing targeted sequencing and de novo haplotypic assembly of the MHC region in heterozygous samples, using long-read sequencing technologies. Our approach is validated using two reference samples, two family trios, and an African-American sample. We achieved excellent coverage (96.6%–99.9% with at least 30x depth) and high accuracy (99.89%–99.99%) for the different haplotypes. This methodology offers a reliable and cost-effective method for sequencing and fully characterizing the MHC without the need for whole-genome sequencing, facilitating broader studies on this important genomic segment and having significant implications in immunology, genetics, and medicine. Full Article
go How Early Career Family Medicine Women Physicians Negotiate Their First Job After Residency By www.jabfm.org Published On :: 2024-10-25T09:26:14-07:00 Background: Nested within a growing body of evidence of a gender pay gap in medicine are more alarming recent findings from family medicine: a gender pay gap of 16% can be detected at a very early career stage. This article explores qualitative evidence of women’s experiences negotiating for their first job out of residency to ascertain women’s engagement with and approach to the negotiation process. Methods: We recruited family physicians who graduated residency in 2019 and responded to the American Board of Family Medicine 2022 graduate survey. We developed a semistructured interview guide following a modified life history approach to uncover women’s experiences through the transitory stages from residency to workforce. A qualitative researcher used Zoom to interview 19 geographically and racially diverse early career women physicians. Interviews were transcribed verbatim and analyzed using NVivo software following an Inductive Content Analysis approach. Results: Three main themes emerged from the data. First, salary was found to be nonnegotiable, exemplified by participants’ inability to change initial salary offers. Second, the role of peer support throughout residency and early career was crucial to uncovering and rectifying salary inequity. Third, a pay expectation gap was identified among women from minority and low-income households. Conclusion: To rectify the gender pay gap in medicine, a systems-level approach is required. This can be achieved through various levels of interventions: societally expanding the use of and removing the stigma around parental leave, recognizing the importance of contributions not currently valued by productivity-based payment models, examining assumptions about leadership; and institutionally moving away from fee-for-service systems, encouraging flexible schedules, increasing salary transparency, and improving advancement transparency. Full Article
go The influence of categorical stimuli on relational memory binding [RESEARCH PAPERS] By learnmem.cshlp.org Published On :: 2024-10-31T09:40:31-07:00 Binding of arbitrary information into distinct memory representations that can be used to guide behavior is a hallmark of relational memory. What is and is not bound into a memory representation and how those things influence the organization of that representation remain topics of interest. While some information is intentionally and effortfully bound—often the information that is consistent with task goals or expectations about what information may be required later—other information appears to be bound automatically. The present set of experiments sought to investigate whether spatial memory would be systematically influenced by the presence and absence of distinct categories of stimuli on a spatial reconstruction task. In this task, participants must learn multiple item-location bindings and place each item back in its studied location after a short delay. Across three experiments, participants made significantly more within-category errors (i.e., misassigning one item to the location of a different item from the same category) than between-category errors (i.e., misassigning one item to the location of an item from a different category) when categories were perceptually or semantically distinct. These data reveal that category information contributed to the organization of the memory representation and influenced spatial reconstruction performance. Together, these results suggest that categorical information can influence memory organization, and not always to the benefit of overall task performance. Full Article
go Characterizing the Distribution of a Stimulator of Interferon Genes Agonist and Its Metabolites in Mouse Liver by Matrix-Assisted Laser Desorption/Ionization Imaging Mass Spectrometry [Special Section on New and Emerging Areas and Technologies in Drug Met By dmd.aspetjournals.org Published On :: 2024-10-16T09:02:03-07:00 A STING (stimulator of interferon genes) agonist GSK3996915 under investigation in early discovery for hepatitis B was orally dosed to a mouse model for understanding the parent drug distribution in liver, the target organ. Matrix-assisted laser desorption/ionization (MALDI) imaging mass spectrometry (IMS) was used to quantify the distribution of GSK3996915 in liver collected from mice administered a single oral dose at 90 mg/kg. GSK3996915 was detected with a zonal distribution localized in the portal triad and highly concentrated in the main bile ducts, indicating clearance through biliary excretion. High spatial resolution imaging showed the distribution of the parent drug localized to the cellular populations in the sinusoids, including the Kupffer cells. Additionally, a series of drug-related metabolites were observed to be localized in the central zones of the liver. These results exemplify the potential of utilizing MALDI IMS for measuring not only quantitative drug distribution and target exposure but also drug metabolism and elimination in a single suite of experiments. SIGNIFICANCE STATEMENT An integrated imaging approach utilizing matrix-assisted laser desorption/ionization imaging mass spectrometry (MALDI IMS) complemented with immunohistochemistry (IHC) and histology was used to address the question of target exposure at the cellular level. Localized quantification of the parent drug in the target organ and identification of potential metabolites in the context of tissue histology were also achieved in one experimental suite to support characterization of pharmacokinetic properties of the drug in the early discovery stage.: Full Article
go Exogenous Pregnane X Receptor Does Not Undergo Liquid-Liquid Phase Separation in Nucleus under Cell-Based In Vitro Conditions [Special Section on New and Emerging Areas and Technologies in Drug Metabolism and Disposition, Part II] By dmd.aspetjournals.org Published On :: 2024-10-16T09:02:03-07:00 Pregnane X receptor (PXR) belongs to the nuclear receptor superfamily that plays a crucial role in hepatic physiologic and pathologic conditions. Phase separation is a process in which biomacromolecules aggregate and condense into a dense phase as liquid condensates and coexist with a dilute phase, contributing to various cellular and biologic functions. Until now, whether PXR could undergo phase separation remains unclear. This study aimed to investigate whether PXR undergoes phase separation. Analysis of the intrinsically disordered regions (IDRs) using algorithm tools indicated a low propensity of PXR to undergo phase separation. Experimental assays such as hyperosmotic stress, agonist treatment, and optoDroplets assay demonstrated the absence of phase separation for PXR. OptoDroplets assay revealed the inability of the fusion protein of Cry2 with PXR to form condensates upon blue light stimulation. Moreover, phase separation of PXR did not occur even though the mRNA and protein expression levels of PXR target, cytochrome P450 3A4, changed after sorbitol treatment. In conclusion, for the first time, these findings suggested that exogenous PXR does not undergo phase separation following activation or under hyperosmotic stress in nucleus of cells. SIGNIFICANCE STATEMENT PXR plays a critical role in hepatic physiological and pathological processes. The present study clearly demonstrated that exogenous PXR does not undergo phase separation after activation by agonist or under hyperosmotic stress in nucleus. These findings may help understand PXR biology. Full Article
go Going Rogue: Mechanisms, Regulation, and Roles of Mutationally Activated G{alpha} in Human Cancer [Minireview] By molpharm.aspetjournals.org Published On :: 2024-10-17T05:12:59-07:00 G protein–coupled receptors (GPCRs) couple to heterotrimeric G proteins, comprised of α and β subunits, to convert extracellular signals into activation of intracellular signaling pathways. Canonically, GPCR-mediated activation results in the exchange of GDP for GTP on G protein α subunits (Gα) and the dissociation of Gα-GTP and G protein β subunits (Gβ), both of which can regulate a variety of signaling pathways. Hydrolysis of bound GTP by Gα returns the protein to Gα-GDP and allows reassociation with Gβ to reform the inactive heterotrimer. Naturally occurring mutations in Gα have been found at conserved glutamine and arginine amino acids that disrupt the canonical G protein cycle by inhibiting GTP hydrolysis, rendering these mutants constitutively active. Interestingly, these dysregulated Gα mutants are found in many different cancers due to their ability to sustain aberrant signaling without a need for activation by GPCRs. This review will highlight an increased recognition of the prevalence of such constitutively activating Gα mutations in cancers and the signaling pathways activated. In addition, we will discuss new knowledge regarding how these constitutively active Gα are regulated, how different mutations are biochemically distinct, and how mutationally activated Gα are unique compared with GPCR-activated Gα. Lastly, we will discuss recent progress in developing inhibitors directly targeting constitutively active Gα mutants. SIGNIFICANCE STATEMENT Constitutively activating mutations in G protein α subunits (Gα) widely occur in and contribute to the development of many human cancers. To develop ways to inhibit dysregulated, oncogenic signaling by these mutant Gα, it is crucial to better understand mechanisms that lead to constitutive Gα activation and unique mechanisms that regulate mutationally activated Gα in cells. The prevalence of activating mutations in Gα in various cancers makes Gα proteins compelling targets for the development of therapeutics. Full Article
go Family Planning, Reproductive Health, and Progress Toward the Sustainable Development Goals: Reflections and Directions on the 30th Anniversary of the International Conference on Population and Development By ghspjournal.org Published On :: 2024-10-29T12:28:39-07:00 Full Article
go Adapting the Social Norms Exploration Tool in the Democratic Republic of the Congo to Identify Social Norms for Behavior Change By ghspjournal.org Published On :: 2024-10-29T12:28:39-07:00 ABSTRACTIn the Democratic Republic of the Congo (DRC), male engagement, social norms, and social networks mitigate family planning behavior. We discuss the adaptation of the Social Norms Exploration Tool (SNET), which identifies relevant social norms and community members upholding these norms, to inform the development of family planning interventions in the DRC. The SNET provides activity tools and templates to guide users through the following steps: (1) plan and prepare, (2) identify reference groups, (3) explore social norms, (4) analyze results, and (5) apply findings.The SNET approach resulted in discussion of social norms, particularly around birth spacing and gender norms framing the man as the decision-maker. However, despite applying a methodology specifically designed to identify social norms, other factors limiting use of contraceptive methods were identified in the process, including lack of education, rumors, and misconceptions. Adaptations were needed to include the full range of reference groups due to narrow phrasing of primary questions, and some of the participatory methods were overly complicated. Feedback from experienced data collectors suggested that the social norms framework is not intuitive, is difficult to apply correctly, and may require that data collectors have a stronger foundation in the relevant concepts to produce valid and actionable results.Although the SNET provides language for discussing normative factors and techniques to identify reference groups and social norms, modifications to the implementation process are recommended when adapting the tool for research. Full Article
go A Cosmopolitan Argument for Temporary “Diagonal” Short-Term Surgical Missions as a Component of Surgical Systems Strengthening By ghspjournal.org Published On :: 2024-10-29T12:28:39-07:00 Full Article
go Gabapentinoids Increase the Potency of Fentanyl and Heroin and Decrease the Potency of Naloxone to Antagonize Fentanyl and Heroin in Rats Discriminating Fentanyl [Behavioral Pharmacology] By jpet.aspetjournals.org Published On :: 2024-10-18T07:04:15-07:00 Despite a significant decrease in the number of prescriptions for opioids, the opioid crisis continues, fueled in large part by the availability of the phenylpiperidine mu opioid receptor (MOR) agonist fentanyl. In contrast, the number of prescriptions for and the off-label use of gabapentinoids (gabapentin and pregabalin) has increased dramatically, with gabapentinoids commonly detected in opioid overdose victims. Although gabapentinoids can decrease the potency of the opioid receptor antagonist naloxone to reverse heroin-induced hypoventilation in male rats, the specificity and nature of interaction between gabapentinoids and MOR agonists and any potential sex difference in those interactions are not well characterized. Gabapentinoids were studied in female and male rats discriminating fentanyl (0.0032 mg/kg, i.p.) or cocaine (3.2 mg/kg, i.p.). Alone, neither gabapentin nor pregabalin significantly increased fentanyl- or cocaine-appropriate responding. In rats discriminating fentanyl, each gabapentinoid dose-dependently shifted the fentanyl and heroin discrimination dose-effect functions to the left, whereas naloxone dose-dependently shifted the fentanyl and heroin discrimination dose-effect functions to the right. Each gabapentinoid (100 mg/kg) significantly decreased the potency of naloxone to antagonize the discriminative stimulus effect of fentanyl or heroin. In contrast, each gabapentinoid dose-dependently shifted the cocaine and d-methamphetamine discrimination dose-effect functions to the right. There were no significant sex differences in this study. These results suggest that gabapentinoids impact the misuse of opioids, the co-use of opioids and stimulant drugs, and the increasing number of overdose deaths in individuals using opioids, stimulant drugs, and gabapentinoids in mixtures. SIGNIFICANCE STATEMENT The number of prescriptions for and the off-label use of gabapentinoids (gabapentin and pregabalin) has increased dramatically, with gabapentinoids commonly detected in opioid overdose victims. This study reports that in rats gabapentinoids increase the potency of fentanyl and heroin to produce discriminative stimulus effects while decreasing the potency of naloxone to antagonize those effects of fentanyl and heroin. These results can help guide policies for regulating gabapentinoids and treating opioid misuse and overdose. Full Article
go Alternative Reinforcers Enhance the Effects of Opioid Antagonists, but Not Agonists, on Oxycodone Choice Self-Administration in Nonhuman Primates [Behavioral Pharmacology] By jpet.aspetjournals.org Published On :: 2024-10-18T07:04:15-07:00 Clinical reports suggest that the most effective strategies for managing opioid use disorder comprise a comprehensive treatment program of both pharmacological and nonpharmacological approaches. However, the conditions under which these combinations are most effective are not well characterized. This study examined whether the presence of an alternative reinforcer could alter the efficacy of Food and Drug Administration–approved opioid antagonist or agonist medications, as well as the nonopioid flumazenil, in decreasing oxycodone choice self-administration in nonhuman primates. Adult squirrel monkeys (n = 7; four females) responded under concurrent second-order fixed-ratio (FR)-3(FR5:S);TO45s schedules of reinforcement for intravenous oxycodone (0.1 mg/kg) or saline on one lever and 30% sweetened condensed milk or water on the other. Doses of naltrexone (0.00032–1.0 mg/kg), nalbuphine (0.32–10 mg/kg), buprenorphine (0.0032–0.032 mg/kg), methadone (0.32–1.0 mg/kg), or flumazenil (1–3.2 mg/kg) were administered intramuscularly prior to oxycodone self-administration sessions that occurred with either milk or water as the alternative. Naltrexone, a μ-opioid receptor antagonist, was >30-fold more potent when milk was available compared with water and abolished oxycodone intake (injections/session) while concomitantly increasing milk deliveries at the highest dose tested. Pretreatment with the low-efficacy μ-agonist nalbuphine was most effective in the presence of milk compared with water, decreasing oxycodone preference to <50% of control values. The higher efficacy μ-agonists, methadone and buprenorphine, and the benzodiazepine antagonist flumazenil did not appreciably alter the reinforcing potency of oxycodone under either condition. These results suggest that antagonist medications used in combination with alternative reinforcers may be an effective strategy to curtail opioid abuse–related behaviors. SIGNIFICANCE STATEMENT Clinical treatment programs for opioid use disorder use a combination of pharmacological and nonpharmacological approaches. However, the conditions under which these combinations are most effective have not been fully characterized. This study examined whether the effectiveness of μ-opioid medications to decrease oxycodone self-administration is altered in the presence of an alternative reinforcer. The results suggest that alternative reinforcers enhance the effects of antagonist or low-efficacy partial agonists, suggesting they may be a more effective strategy to curtail opioid use. Full Article
go Evaluating the Abuse Potential of Lenabasum, a Selective Cannabinoid Receptor 2 Agonist [Special Section: Cannabinoid Signaling in Human Health and Disease] By jpet.aspetjournals.org Published On :: 2024-10-18T07:04:15-07:00 Endocannabinoids, which are present throughout the central nervous system (CNS), can activate cannabinoid receptors 1 and 2 (CB1 and CB2). CB1 and CB2 agonists exhibit broad anti-inflammatory properties, suggesting their potential to treat inflammatory diseases. However, careful evaluation of abuse potential is necessary. This study evaluated the abuse potential of lenabasum, a selective CB2 receptor agonist in participants (n = 56) endorsing recreational cannabis use. Three doses of lenabasum (20, 60, and 120 mg) were compared with placebo and nabilone (3 and 6 mg). The primary endpoint was the peak effect (Emax) on a bipolar Drug Liking visual analog scale (VAS). Secondary VAS and pharmacokinetic (PK) endpoints and adverse events were assessed. Lenabasum was safe and well tolerated. Compared with placebo, a 20-mg dose of lenabasum did not increase ratings of Drug Liking and had no distinguishable effect on other VAS endpoints. Dose-dependent increases in ratings of Drug Liking were observed with 60 and 120 mg lenabasum. Drug Liking and all other VAS outcomes were greatest for nabilone 3 mg and 6 mg, a medication currently approved by the US Food and Drug Administration (FDA). At a target therapeutic dose (20 mg), lenabasum did not elicit subjective ratings of Drug Liking. However, supratherapeutic doses of lenabasum (60 and 120 mg) did elicit subjective ratings of Drug Liking compared with placebo. Although both doses of lenabasum were associated with lower ratings of Drug Liking compared with 3 mg and 6 mg nabilone, lenabasum does have abuse potential and should be used cautiously in clinical settings. SIGNIFICANCE STATEMENT This work provides evidence that in people with a history of recreational cannabis use, lenabasum was safe and well tolerated, although it did demonstrate abuse potential. This work supports further development of lenabasum for potential therapeutic indications. Full Article
go Chronic Administration of Cannabinoid Agonists ACEA, AM1241, and CP55,940 Induce Sex-Specific Differences in Tolerance and Sex Hormone Changes in a Chemotherapy-Induced Peripheral Neuropathy [Special Section: Cannabinoid Signaling in Human Health and Dise By jpet.aspetjournals.org Published On :: 2024-10-18T07:04:15-07:00 Chemotherapy-induced peripheral neuropathy (CIPN) is a common side effect of chemotherapy treatment, routinely manifesting as increased pain sensitivity (allodynia) in distal extremities. Despite its prevalence, effective treatment options are limited. Cannabinoids are increasingly being evaluated for their ability to treat chronic pain conditions, including CIPN. While previous studies have revealed sex differences in cannabinoid-mediated antinociception in acute and chronic pain models, there is a paucity of studies addressing potential sex differences in the response of CIPN to cannabinoid treatment. Therefore, we evaluated the long-term antiallodynic efficacy of cannabinoid receptor type 1 (CB1)-selective, cannabinoid receptor type 2 (CB2)-selective, and CB1/CB2 mixed agonists in the cisplatin CIPN model, using both male and female mice. CB1 selective agonism was observed to have sex differences in the development of tolerance to antiallodynic effects, with females developing tolerance more rapidly than males, while the antiallodynic effects of selective CB2 agonism lacked tolerance development. Compound-specific changes to the female estrous cycle and female plasma estradiol levels were noted, with CB1 selective agonism decreasing plasma estradiol while CB2 selective agonism increased plasma estradiol. Chronic administration of a mixed CB1/CB2 agonist resulted in increased mRNA expression of proinflammatory cytokines and endocannabinoid regulatory enzymes in female spinal cord tissue. Ovarian tissue was noted to have proinflammatory cytokine mRNA expression following administration of a CB2 acting compound while selective CB1 agonism resulted in decreased proinflammatory cytokines and endocannabinoid regulatory enzymes in testes. These results support the need for further investigation into the role of sex and sex hormones signaling in pain and cannabinoid-mediated antinociceptive effects. SIGNIFICANCE STATEMENT CIPN is a common side effect of chemotherapy. We have found that both CB1 and CB2 receptor agonism produce antinociceptive effects in a cisplatin CIPN model. We observed that tolerance to CB1-mediated antinociception developed faster in females and did not develop for CB2-mediated antinociception. Additionally, we found contrasting roles for CB1/CB2 receptors in the regulation of plasma estradiol in females, with CB1 agonism attenuating estradiol and CB2 agonism enhancing estradiol. These findings support the exploration of cannabinoid agonists for CIPN. Full Article
go KLS-13019, a Novel Structural Analogue of Cannabidiol and GPR55 Receptor Antagonist, Prevents and Reverses Chemotherapy-Induced Peripheral Neuropathy in Rats [Special Section: Cannabinoid Signaling in Human Health and Disease] By jpet.aspetjournals.org Published On :: 2024-10-18T07:04:15-07:00 Neuropathic pain is a form of chronic pain that develops because of damage to the nervous system. Treatment of neuropathic pain is often incompletely effective, and most available therapeutics have only moderate efficacy and present side effects that limit their use. Opioids are commonly prescribed for the management of neuropathic pain despite equivocal results in clinical studies and significant abuse potential. Thus, neuropathic pain represents an area of critical unmet medical need, and novel classes of therapeutics with improved efficacy and safety profiles are urgently needed. The cannabidiol structural analog and novel antagonist of GPR55, KLS-13019, was screened in rat models of neuropathic pain. Tactile sensitivity associated with chemotherapy exposure was induced in rats with once-daily 1-mg/kg paclitaxel injections for 4 days or 5 mg/kg oxaliplatin every third day for 1 week. Rats were then administered KLS-13019 or comparator drugs on day 7 in an acute dosing paradigm or days 7–10 in a chronic dosing paradigm, and mechanical or cold allodynia was assessed. Allodynia was reversed in a dose-dependent manner in the rats treated with KLS-13019, with the highest dose reverting the response to prepaclitaxel injection baseline levels with both intraperitoneal and oral administration after acute dosing. In the chronic dosing paradigm, four consecutive doses of KLS-13019 completely reversed allodynia for the duration of the phenotype in control animals. Additionally, coadministration of KLS-13019 with paclitaxel prevented the allodynic phenotype from developing. Together, these data suggest that KLS-13019 represents a potential new drug for the treatment of neuropathic pain. SIGNIFICANCE STATEMENT Chemotherapy-induced peripheral neuropathy (CIPN) is a common, debilitating side effect of cancer treatment with no known cure. The GPR55 antagonist KLS-13019 represents a novel class of drug for this condition that is a potent, durable inhibitor of allodynia associated with CIPN in rats in both prevention and reversal-dosing paradigms. This novel therapeutic approach addresses a critical area of unmet medical need. Full Article
go Low-Efficacy Mu Opioid Agonists as Candidate Analgesics: Effects of Novel C-9 Substituted Phenylmorphans on Pain-Depressed Behavior in Mice [Behavioral Pharmacology] By jpet.aspetjournals.org Published On :: 2024-10-18T07:04:15-07:00 Low-efficacy mu opioid receptor (MOR) agonists may serve as novel candidate analgesics with improved safety relative to high-efficacy opioids. This study used a recently validated assay of pain-depressed behavior in mice to evaluate a novel series of MOR-selective C9-substituted phenylmorphan opioids with graded MOR efficacies. Intraperitoneal injection of dilute lactic acid (IP acid) served as a noxious stimulus to depress locomotor activity by mice in an activity chamber composed of two compartments connected by an obstructed door. Behavioral measures included (1) crosses between compartments (vertical activity over the obstruction) and (2) movement counts quantified as photobeam breaks summed across compartments (horizontal activity). Each drug was tested alone and as a pretreatment to IP acid. A charcoal-meal test and whole-body-plethysmography assessment of breathing in 5% CO2 were also used to assess gastrointestinal (GI) inhibition and respiratory depression, respectively. IP acid produced a concentration-dependent depression in crosses and movement that was optimally alleviated by intermediate- to low-efficacy phenylmorphans with sufficient efficacy to produce analgesia with minimal locomotor disruption. Follow-up studies with two low-efficacy phenylmorphans (JL-2-39 and DC-1-76.1) indicated that both drugs produced naltrexone-reversible antinociception with a rapid onset and a duration of ~1 h. Potency of both drugs increased when behavior was depressed by a lower IP-acid concentration, and neither drug alleviated behavioral depression by a non-pain stimulus (IP lithium chloride). Both drugs produced weaker GI inhibition and respiratory depression than fentanyl and attenuated fentanyl-induced GI inhibition and respiratory depression. Results support further consideration of selective, low-efficacy MOR agonists as candidate analgesics. SIGNIFICANCE STATEMENT This study used a novel set of mu opioid receptor (MOR)-selective opioids with graded MOR efficacies to examine the lower boundary of MOR efficacy sufficient to relieve pain-related behavioral depression in mice. Two novel low-efficacy opioids (JL-2-39, DC-1-76.1) produced effective antinociception with improved safety relative to higher- or lower-efficacy opioids, and results support further consideration of these and other low-efficacy opioids as candidate analgesics. Full Article
go Comparative Evaluation of Lower Gadolinium Doses for MR Imaging of Meningiomas: How Low Can We Go? [CLINICAL PRACTICE] By www.ajnr.org Published On :: 2024-11-07T15:14:12-08:00 BACKGROUND AND PURPOSE: Gadolinium-based contrast agents are widely used for meningioma imaging; however, concerns exist regarding their side effects, cost, and environmental impact. At the standard gadolinium dose, most meningiomas show avid contrast enhancement, suggesting that administering a smaller dose may be feasible. The purpose of this study was to evaluate the impact of a lower gadolinium dose on the differentiation between meningiomas and adjacent intracranial tissues. MATERIALS AND METHODS: One hundred eight patients with presumed or confirmed meningiomas who underwent a brain MRI at multiple doses of gadolinium were included in the study. The patients’ MRIs were categorized into 3 groups based on the gadolinium dose administered: micro (approximately 25% of the standard dose), low (approximately 62% of the standard dose), and standard dose. Multireader qualitative visual assessment and quantitative relative signal differences calculations were performed to evaluate tumor differentiation from the cortex and from the dural venous sinus. The relative signal differences for each dose were analyzed by using ANOVA for quantitative assessment and the McNemar test for qualitative assessment. Additionally, noninferiority testing was used to compare the low and micro doses to the standard dose. RESULTS: Decreasing the gadolinium dose to a low dose or micro dose resulted in a statistically significant decrease in signal difference between the tumor and the adjacent brain tissue (P < .02). However, on visual assessment, the low dose was noninferior to the standard dose. The proportion of cases with suboptimal differentiation was significantly higher for the micro dose than for the standard dose, both for the differentiation between the tumor and the cortex (P = .041) and the differentiation between the tumor and the sinus (P < .001). CONCLUSIONS: Reducing the gadolinium dose to 62% of the standard level still allows for sufficient visual delineation of meningiomas from surrounding tissues. However, further reduction to 25% substantially compromises the ability to distinguish the tumor from adjacent structures and is, therefore, not advisable. Full Article
go Taxman joins gold rush By www.theaustralian.com.au Published On :: Tue, 14 Jun 2016 14:00:00 GMT The Bank of Mum and Dad has been a major sponsor of Olympic athletes for more than a century, but may be about to be superseded. Full Article
go SNP ministers urged to 'mitigate' UK Government's ‘chilling’ anti-terror strategy By www.heraldscotland.com Published On :: Tue, 12 Nov 2024 05:00:00 +0000 Human rights campaigners are calling on SNP ministers to do all they can to “mitigate” Prevent, the UK Government's controversial anti-terror strategy. Full Article
go Sarwar: Scottish Government must follow Chancellor and extend rates relief By www.heraldscotland.com Published On :: Tue, 12 Nov 2024 17:43:29 +0000 Ministers must follow the UK Government and extend rates relief for businesses in Scotland, Anas Sarwar has said. Full Article
go Hundreds of houses on golf club land 'much-needed', claims developer By www.heraldscotland.com Published On :: Tue, 12 Nov 2024 04:34:00 +0000 Up to 650 houses could be built on land at the golf club Full Article