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Wild River Collaborates with Cadence on CMP-70 Channel Modeling

Wild River Technology (WRT), the leading supplier of signal integrity measurement and optimization test fixtures for high-speed channels at data rates of up to 224G, has announced the availability of a new advanced channel modeling solution that helps achieve extreme signal integrity design to 70GHz. Read the press release. The CMP-70 program continues the industry-first simulation-to-measurement collaboration with Cadence that was initially established with the CMP-50. Significant resources were dedicated to the development of the CMP-70 by Cadence and WRT over almost three years. The CMP-70 will be on display at DesignCon 2025 , January 28-30, in Cadence booth 827 to benchmark the Cadence Clarity 3D Solver . “I am not a fan of hype-based programs that simply get attention,” remarked Alfred P. Neves, WRT’s co-founder and chief technical officer. “Both Cadence and Wild River brought substantial skills to the table in this project as we continued our industry-first simulation-to-measurement collaboration. The result is a proven, robust and accurate platform that brings extreme signal integrity to 70GHz designs. This application package has also been instrumental in demonstrating the robust 3D EM simulation capability of the Cadence Clarity solver.” “We’re delighted to continue the joint development and validation program with WRT that started with the CMP-50,” said Gary Lytle, product management director at Cadence. “The skilled and experienced signal integrity technologists that both companies bring to the program results in a superior signal integrity solution for our mutual customers.” CMP-70 Solution Features The solution is available both in a standard configuration and as a custom solution for customer-specific stackups and fabrication. The primary target application is to support a 3D EM solver analysis modeling versus the time- and frequency-domain measurement methodologies. The solution features include: The CMP-70 platform, assembled and 100% TDR NIST traceable tested, with custom stands Material Identification overview web-based meeting including anisotropic 3D material identification A cross-section PCB report and structures for using as-fabricated geometries Measured S-parameters, pre-tested for quality (passivity/causality and resampled for time domain simulations) A host of novel crosstalk structures suited for 112G HD level project analysis PCB layout design files (NDA required) An EDA starter library including loss models with industry-first accurate surface roughness models Comprehensive training available for 3D EM analysis – correspondence, material ID in X-Y and Z axis for a host of EDA tools Industry-First Hausdorff Technique The WRT application package also includes an industry-first modified Hausdorff (MHD) technique , included as MATLAB code. This algorithmic approach provides an accurate way to compare two sets of measurements in multi-dimensional space to determine how well they match. The technique is used to compare the results simulated by the Clarity solver with those measured on the CMP-70 platform. The methodology and initial results are shown in the figure below, where the figure of merit (FOM) is calculated from 10, 35, and finally to 50GHz. The MHD algorithm requires a MATLAB license, but WRT also accommodates customer data as another option, where WRT provides the comparison between measured and simulated data. Additional Resources If you are attending DesignCon 2025 , be sure to stop by Cadence booth 827 to see WRT’s CMP-70 advanced channel modeling solution in action with the Clarity 3D Solver. Check out our on-demand webinar, " Validating Clarity 3D Solver Accuracy Through Measurement Correlation ." Learn more about the CMP-70 solution and the Clarity 3D Solver . For more information about Cadence’s full suite of integrated multiphysics simulation solutions, download our Multiphysics System Analysis Solutions Portfolio .




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Collecting Coverage using Vmanager

Hi, 

I am running a regression in order to collect the coverage. However I have an issue. I am setting a signal to 0 when reset is de-asserted  then this signal takes a fixed value when the reset is asserted. 

if(!rst_n) 
init_val= 'b0;

else 

init_val31'h34013FF7

the issue is that I got 0%  coverage for the init_value since we only have a rising edge and the signal is not toggling during the simulation. is there an option to collect coverage when there is a rising edge or a falling edge? 




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IntelliGen Statistics Metrics Collection Utilility

As noted in white papers, posts on the Team Specman Blog, and the Specman documentation, IntelliGen is a totally new stimulus generator than the original "Pgen" and, as a result, there is some amount of effort needed to migrate an existing verification environment to fully leverage the power of IntelliGen.  One of the main steps in migrating code is running the linters on your code and adressing the issues highlighted. 

Included below is a simple utility you can include in your environment that allows you to collect some valuable statistics about your code base to allow you to better gauge the amount of work that might be required to migrate from Pgen to IntelliGen.  The ICFS statistics reported are of particular benefit as the utility not only identifies the approximate number of ICFSs in the environment, it also breaks the total number down according to generation contexts (structs/units and gen-on-the-fly statements) allowing you to better focus your migration efforts. 

IMPORTANT: Sometimes a given environment can trigger a large number of IntelliGen linting messages right off the bat.  Don't let this freak you out!  This does not mean that migration will be a long effort as quite often some slight changes to an environment remove a large number of identified issues.  I recently encountered a situation where a simple change to three locations in the environment, removed 500+ ICFSs!

The methods included in the utility can be used to report information on the following:
- Number of e modules
- Number of lines in the environment (including blanks and comments)
- Number and type of IntelliGen Guidelines linting messages
- Number of Inconsistently Connected Field Sets (ICFSs)
- Number of ICFS contexts and how many ICFSs per context
- Number of soft..select overlays found in the envioronment
- Number of Laces identified in the environment


To use the code below, simply load it before/after loading e-code and then
you can execute any of the following methods:

- sys.print_file_stats()             : prints # of lines and files
- sys.print_constraint_stats()   : prints # of constraints in the environment
- sys.print_guideline_stats()    : prints # of each type of linting message
- sys.print_icfs_stats()            : prints # of ICFSs, contexts and #ICFS/context
- sys.print_soft_select_stats() : prints # of soft select overlay issues
- sys.print_lace_stats()           : *Only works for SPMNv6.2s4 and later* prints # of laces identified in the environment

Each of the above calls to methods produces it's own log files (stored in the current working directory) containing relevant information for more detailed analysis.
- file_stats_log.elog : Output of "show modules" command
- constraint_log.elog : Output of the "show constraint" command
- guidelines_log.elog : Output of "gen lint -g" (with notification set to MAX_INT in order to get all warnings)
- icfs_log.elog       : Output of "gen lint -i" command
- soft_select_log.elog: Output of the "gen lint -s" command
- lace_log.elog       : Output of the "show lace" command


Happy generating!

Corey Goss




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East-West Center to Extend Collaboration in Pacific Islands Climate Resiliency Program

East-West Center to Extend Collaboration in Pacific Islands Climate Resiliency Program East-West Center to Extend Collaboration in Pacific Islands Climate Resiliency Program
venkatp

News Release

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Enugu orders arrest of students bullying colleague

The Enugu State Government has strongly condemned the bullying and physical assault of a student at the Federal Government College, Enugu, describing it as “deeply troubling and emotionally distressing.” The state Commissioner for Education, Prof Ndubueze Mbah, in a statement on Tuesday, emphasised the government’s zero-tolerance policy for bullying, abuse, and dehumanising treatment in all


Read More




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South Korea and the US: Collaborating to Aid Economic Recovery in Southeast Asia

South Korea and the US: Collaborating to Aid Economic Recovery in Southeast Asia South Korea and the US: Collaborating to Aid Economic Recovery in Southeast Asia
ferrard Thu, 01/06/2022 - 09:09

East-West Wire

Tagline
News, Commentary, and Analysis
East-West Wire

The East-West Wire is a news, commentary, and analysis service provided by the East-West Center in Honolulu. Any part or all of the Wire content may be used by media with attribution to the East-West Center or the person quoted. To receive East-West Center Wire media releases via email, subscribe here.

For links to all East-West Center media programs, fellowships and services, see www.eastwestcenter.org/journalists.

Explore

East-West Wire

Tagline
News, Commentary, and Analysis
East-West Wire

The East-West Wire is a news, commentary, and analysis service provided by the East-West Center in Honolulu. Any part or all of the Wire content may be used by media with attribution to the East-West Center or the person quoted. To receive East-West Center Wire media releases via email, subscribe here.

For links to all East-West Center media programs, fellowships and services, see www.eastwestcenter.org/journalists.

Explore




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Residents concerned over Mbokodweni River bridge collapse




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To survive Zuma’s wrath, Malema must return to the ANC - ANCYL leader Collen Malatji




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Mining site collapses in Plateau, kills 13

Not less than 13 persons have reportedly died after a mining site collapsed in Bassa local government area of Plateau State. Chairman of the local government, Joshua Riti, who confirmed ths incident, said it occurred on November 10. He added that seven of the deceased hail from Bassa LGA, NAN reports. “This is an unfortunate […]

The post Mining site collapses in Plateau, kills 13 first appeared on Business Hallmark.



  • Nation
  • Mining site collapses in Plateau kills 13


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Claim of plot to collapse union following mass dismissals of metro bus drivers




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Boity Thulo and Roiii collaborate on groundbreaking album ‘The Extra Mile’




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PVL: Collective effort gets it done for undermanned Chery Tiggo

MANILA, Philippines — After an exodus at Chery Tiggo, Ara Galang led the team’s collective effort to eke out a come-from-behind win over the gritty Capital1 and jumpstart their 2024-25 PVL All-Filipino Conference. The Crossovers were pushed to their limits right at the start of their post-Eya Laure era as they also missed key members Mylene Paat, Jen Nierva, and Jas Nabor leaving an undermanned team, which also lost EJ Laure and Buding Duremdes. But Galang and the Crossovers stuck to their collective effort to fight back from a 1-2 deficit before surviving the Solar Spikers, 20-25, 25-23, 22-25, 25-18, […]...

Keep on reading: PVL: Collective effort gets it done for undermanned Chery Tiggo




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Thousands of Serbians demand prime minister's resignation following deadly roof collapse

Thousands of Serbians demand prime minister's resignation following deadly roof collapse




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German opposition welcome snap-election news after ruling coalition's collapse

German opposition welcome snap-election news after ruling coalition's collapse




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to write a chapter summary for college

to write a chapter summary for college




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to write a college outline for paper

to write a college outline for paper




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to write a college paper format

to write a college paper format




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to write a college reflection paper

to write a college reflection paper




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to write a college outline for a paper

to write a college outline for a paper




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to write a good college paper

to write a good college paper




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Paramotorists collect rare plant species from Peruvian desert oases

Kew scientists use paramotorists to collect rare plant species from Peruvian desert oases




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See a dazzling collection of the year's best northern lights pictures

This spectacular selection of images is taken from the winners of the Northern Lights Photographer of the Year competition, run by Capture the Atlas




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In satire Rumours, diplomatic communiques collide with the end times

A stellar cast play leaders of G7 countries facing an existential crisis in Rumours, a smart film about communication, diplomatic nonsense and not coping, says Simon Ings




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Who were the enigmatic Sea Peoples blamed for the Bronze Age collapse?

Around 3000 years ago, several empires and kingdoms in the Mediterranean collapsed, with a group of sea-faring warriors implicated as the culprit. But new evidence shows that many of our ideas about this turbulent time need completely rethinking




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Nomads thrived in Greece after the collapse of the Roman Empire

Analysis of pollen in sediment cores from a large lake in Greece shows that nomadic livestock herders took over the region after the collapse of the Western Roman Empire




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Easter Island's legendary societal collapse didn't actually happen

Historians have claimed the people of Easter Island overexploited natural resources, causing a population crash, but new evidence suggests they lived sustainably for centuries




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Parenting 101: How to Let Go as Your Child Heads Off to College

Title: Parenting 101: How to Let Go as Your Child Heads Off to College
Category: Health News
Created: 8/21/2010 10:10:00 AM
Last Editorial Review: 8/23/2010 12:00:00 AM




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College Prep 101

Title: College Prep 101
Category: Health News
Created: 8/22/2014 12:36:00 PM
Last Editorial Review: 8/25/2014 12:00:00 AM




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Exercise Best Bet Against Diabetes for College Graduates

Title: Exercise Best Bet Against Diabetes for College Graduates
Category: Health News
Created: 8/24/2015 12:00:00 AM
Last Editorial Review: 8/24/2015 12:00:00 AM




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College Football Players Score More Injuries at Exam Time

Title: College Football Players Score More Injuries at Exam Time
Category: Health News
Created: 8/21/2015 12:00:00 AM
Last Editorial Review: 8/24/2015 12:00:00 AM




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Add Germ Fighters to College Packing List

Title: Add Germ Fighters to College Packing List
Category: Health News
Created: 8/21/2015 12:00:00 AM
Last Editorial Review: 8/24/2015 12:00:00 AM




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Summer Is High Time for College Kids Trying Illegal Substances

Title: Summer Is High Time for College Kids Trying Illegal Substances
Category: Health News
Created: 8/27/2015 12:00:00 AM
Last Editorial Review: 8/27/2015 12:00:00 AM




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Health Tip: Food Safety for College Students

Title: Health Tip: Food Safety for College Students
Category: Health News
Created: 9/1/2017 12:00:00 AM
Last Editorial Review: 9/1/2017 12:00:00 AM




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College Grades Low? Try a Different Seat in the Classroom

Title: College Grades Low? Try a Different Seat in the Classroom
Category: Health News
Created: 8/24/2018 12:00:00 AM
Last Editorial Review: 8/27/2018 12:00:00 AM




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How to Get Your College Years Off to a Healthy Start

Title: How to Get Your College Years Off to a Healthy Start
Category: Health News
Created: 8/23/2019 12:00:00 AM
Last Editorial Review: 8/26/2019 12:00:00 AM




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Thousands of COVID Cases Already on College Campuses

Title: Thousands of COVID Cases Already on College Campuses
Category: Health News
Created: 8/26/2020 12:00:00 AM
Last Editorial Review: 8/26/2020 12:00:00 AM




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Parents, Look Out for Mental Health Issues as College Kids Return to Class

Title: Parents, Look Out for Mental Health Issues as College Kids Return to Class
Category: Health News
Created: 8/24/2021 12:00:00 AM
Last Editorial Review: 8/24/2021 12:00:00 AM




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College Is Even More Stressful for Girls: Study

Title: College Is Even More Stressful for Girls: Study
Category: Health News
Created: 8/26/2021 12:00:00 AM
Last Editorial Review: 8/26/2021 12:00:00 AM




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Intraprofessional Education Experiences in Dentistry: Dental hygienists’ perceptions of collaboration with dentists

Purpose Health care professionals (HCPs) working collaboratively can improve patient outcomes and also increase their understanding of each other’s professional roles. This descriptive study aimed to explore dental hygienists’ perceptions of collaboration with dentists and intraprofessional educational (IntraPE) experiences.Methods A convenience sampling method was used to assess DHs perceptions of collaboration with dentists using the Interprofessional Collaboration Scale (ICS), a validated scale that measures perceptions of communication, accommodation, and isolation among HCPs. One open-ended question was added to explore IntraPE. Demographics, work characteristics and responses from the ICS were analyzed using frequency, mean, standard deviation, Pearson’s correlation, t-test, ANOVA, and multivariable regression. Responses from the open-ended question were transcribed, organized, and coded. Themes were identified using the Delve Qualitative Analysis Tool.Results Of the 264 participants, the average age was 38.9, and most identified as female (98.9%). Data analysis revealed that DHs had positive perceptions of collaboration with dentists. Significant relationships were found between ICS factor accommodation and the average number of patients treated per day (rs = −0.242, p<0.001), dentists’ age (rs = −.145, p<0.05). Isolation showed a significant negative correlation with the average number of patients treated per day (rs = −0.156, p<0.05). Most reported having no opportunities for IntraPE education experiences with dentists. Five categories of themes were identified from the open-ended question: shared academic setting, clinic dentist, externships, desire for more shared learning, and shared patient experiences.Conclusion Dental hygienists in this study had an overall more positive than negative perception of collaboration with dentists. Dental and dental hygiene programs should focus on intraprofessional education experiences to continue to enhance collaboration.




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50th Anniversary Celebration Collection Special Section on New and Emerging Areas and Technologies in Drug Metabolism and Disposition, Part II--Editorial [Special Section on New and Emerging Areas and Technologies in Drug Metabolism and Disposition, Part




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The Minor Phytocannabinoid Delta-8-Tetrahydrocannabinol Attenuates Collagen-Induced Arthritic Inflammation and Pain-Depressed Behaviors [Special Section: Cannabinoid Signaling in Human Health and Disease]

Patients with arthritis report using cannabis for pain management, and the major cannabinoid delta-9-tetrahydrocannabinol (9-THC) has anti-inflammatory properties, yet the effects of minor cannabinoids on arthritis are largely unknown. The goal of the present study was to determine the antiarthritic potential of the minor cannabinoid delta-8-tetrahydrocannabinol (8-THC) using the collagen-induced arthritis (CIA) mouse model. Adult male DBA/1J mice were immunized and boosted 21 days later with an emulsion of collagen and complete Freund’s adjuvant. Beginning on the day of the booster, mice were administered twice-daily injections of 8-THC (3 or 30 mg/kg), the steroid dexamethasone (2 mg/kg), or vehicle for two weeks. Dorsal-ventral paw thickness and qualitative measures of arthritis were recorded daily, and latency to fall from an inverted grid was measured on alternating days, to determine arthritis severity and functional impairment. On the final day of testing, spontaneous wire-climbing behavior and temperature preference in a thermal gradient ring were measured to assess CIA-depressed behavior. The 8-THC treatment (30 mg/kg) reduced paw swelling and qualitative signs of arthritis. 8-THC also blocked CIA-depressed climbing and CIA-induced preference for a heated floor without producing locomotor effects but did not affect latency to fall from a wire grid. In alignment with the morphologic and behavioral assessments in vivo, histology revealed that 8-THC reduced synovial inflammation, proteoglycan loss and cartilage and bone erosion in the foot joints in a dose-dependent manner. Together, these findings suggest that 8-THC not only blocked morphologic changes but also prevented functional loss caused by collagen-induced arthritis.

SIGNIFICANCE STATEMENT

Despite increasing use of cannabis products, the potential effects of minor cannabinoids are largely unknown. Here, the minor cannabinoid delta-8-tetrahydrocannabinol blocked the development of experimentally induced arthritis by preventing both pathophysiological as well as functional effects of the disease model. These data support the development of novel cannabinoid treatments for inflammatory arthritis.




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The 75-Year Anniversary of the Department of Physiology and Pharmacology at Karolinska Institutet--Examples of Recent Accomplishments and Future Perspectives [75th Anniversary Celebration Collection Special Section-Perspective]

Karolinska Institutet is a medical university encompassing 21 departments distributed across three departmental or campus groups. Pharmacological research has a long and successful tradition at the institute with a multitude of seminal findings in the areas of neuronal control of vasodilatation, cardiovascular pharmacology, neuropsychopharmacology, receptor pharmacology, and pharmacogenomics that resulted in, among many other recognitions, two Nobel prizes in Physiology and Medicine, one in 1970 to Ulf von Euler for his discovery of the processes involved in storage, release, and inactivation of neurotransmitters and the other in 1982 to Sune Bergström and Bengt Samuelsson for their work on prostaglandins and the discovery of leukotrienes. Pharmacology at Karolinska Institutet has over the last decade been ranked globally among the top 10 according to the QS World University Ranking. With the Department of Physiology and Pharmacology now celebrating its 75-year anniversary, we wanted to take this as an opportunity to showcase recent research achievements and how they paved the way for current activities at the department. We emphasize examples from preclinical and clinical research where the dpartment's integrative environment and robust infrastructure have successfully facilitated the translation of findings into clinical applications and patient benefits. The close collaboration between preclinical scientists and clinical researchers across various disciplines, along with a strong network of partnerships within the department and beyond, positions us to continue leading world-class pharmacological research at the Department of Physiology and Pharmacology for decades to come.

Significance Statement

Pharmacological research at Karolinska Institutet has a long and successful history. Given the 75-year anniversary of the Department of Physiology and Pharmacology, this perspective provides an overview of recent departmental achievements and future trajectories. For these developments, interdisciplinary and intersectoral collaborations and a clear focus on result translation are key elements to continue its legacy of world-leading pharmacological research.




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Pharmacological Approaches to Hearing Loss [75th Anniversary Celebration Collection Special Section]

Hearing disorders pose significant challenges to individuals experiencing them and their overall quality of life, emphasizing the critical need for advanced pharmacological approaches to address these conditions. Current treatment options often focus on amplification devices, cochlear implants, or other rehabilitative therapies, leaving a substantial gap regarding effective pharmacological interventions. Advancements in our understanding of the molecular and cellular mechanisms involved in hearing disorders induced by noise, aging, and ototoxicity have opened new avenues for drug development, some of which have led to numerous clinical trials, with promising results. The development of optimal drug delivery solutions in animals and humans can also enhance the targeted delivery of medications to the ear. Moreover, large genome studies contributing to a genetic understanding of hearing loss in humans combined with advanced molecular technologies in animal studies have shown a great potential to increase our understanding of the etiologies of hearing loss. The auditory system exhibits circadian rhythms and temporal variations in its physiology, its vulnerability to auditory insults, and its responsiveness to drug treatments. The cochlear clock rhythms are under the control of the glucocorticoid system, and preclinical evidence suggests that the risk/benefit profile of hearing disorder treatments using chronopharmacological approaches would be beneficial. If translatable to the bedside, such approaches may improve the outcome of clinical trials. Ongoing research into the molecular and genetic basis of auditory disorders, coupled with advancements in drug formulation and delivery as well as optimized timing of drug administration, holds great promise of more effective treatments.

Significance Statement

Hearing disorders pose significant challenges to individuals and their overall quality of life, emphasizing the critical need for advanced pharmacological approaches to address these conditions. Ongoing research into the molecular and genetic basis of auditory disorders, coupled with advancements in drug delivery procedures and optimized timing of drug administration, holds the promise of more effective treatments.




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Nitric Oxide Signaling and Regulation in the Cardiovascular System: Recent Advances [75th Anniversary Celebration Collection Special Section]

Nitric oxide (NO) from endothelial NO synthase importantly contributes to vascular homeostasis. Reduced NO production or increased scavenging during disease conditions with oxidative stress contribute to endothelial dysfunction and NO deficiency. In addition to the classical enzymatic NO synthases (NOS) system, NO can also be generated via the nitrate-nitrite-NO pathway. Dietary and pharmacological approaches aimed at increasing NO bioactivity, especially in the cardiovascular system, have been the focus of much research since the discovery of this small gaseous signaling molecule. Despite wide appreciation of the biological role of NOS/NO signaling, questions still remain about the chemical nature of NOS-derived bioactivity. Recent studies show that NO-like bioactivity can be efficiently transduced by mobile NO-ferroheme species, which can transfer between proteins, partition into a hydrophobic phase, and directly activate the soluble guanylyl cyclase-cGMP-protein kinase G pathway without intermediacy of free NO. Moreover, interaction between red blood cells and the endothelium in the regulation of vascular NO homeostasis have gained much attention, especially in conditions with cardiometabolic disease. In this review we discuss both classical and nonclassical pathways for NO generation in the cardiovascular system and how these can be modulated for therapeutic purposes.

Significance Statement

After four decades of intensive research, questions persist about the transduction and control of nitric oxide (NO) synthase bioactivity. Here we discuss NO signaling in cardiovascular health and disease, highlighting new findings, such as the important role of red blood cells in cardiovascular NO homeostasis. Nonclassical signaling modes, like the nitrate-nitrite-NO pathway, and therapeutic opportunities related to the NO system are discussed. Existing and potential pharmacological treatments/strategies, as well as dietary components influencing NO generation and signaling are covered.




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International Union of Basic and Clinical Pharmacology CXV: The Class F of G Protein-Coupled Receptors [75th Anniversary Celebration Collection Special Section]

The class F of G protein-coupled receptors (GPCRs) consists of 10 Frizzleds (FZD1–10) and Smoothened (SMO). FZDs bind and are activated by secreted lipoglycoproteins of the Wingless/Int-1 (WNT) family, and SMO is indirectly activated by the Hedgehog (Hh) family of morphogens acting on the transmembrane protein Patched. The advance of our understanding of FZDs and SMO as dynamic transmembrane receptors and molecular machines, which emerged during the past 14 years since the first-class F GPCR IUPHAR nomenclature report, justifies an update. This article focuses on the advances in molecular pharmacology and structural biology providing new mechanistic insight into ligand recognition, receptor activation mechanisms, signal initiation, and signal specification. Furthermore, class F GPCRs continue to develop as drug targets, and novel technologies and tools such as genetically encoded biosensors and CRISP/Cas9 edited cell systems have contributed to refined functional analysis of these receptors. Also, advances in crystal structure analysis and cryogenic electron microscopy contribute to the rapid development of our knowledge about structure-function relationships, providing a great starting point for drug development. Despite the progress, questions and challenges remain to fully understand the complexity of the WNT/FZD and Hh/SMO signaling systems.

Significance Statement

The recent years of research have brought about substantial functional and structural insight into mechanisms of activation of Frizzleds and Smoothened. While the advance furthers our mechanistic understanding of ligand recognition, receptor activation, signal specification, and initiation, broader opportunities emerge that allow targeting class F GPCRs for therapy and regenerative medicine employing both biologics and small molecule compounds.




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Neuroactive Kynurenines as Pharmacological Targets: New Experimental Tools and Exciting Therapeutic Opportunities [75th Anniversary Celebration Collection Special Section]

Both preclinical and clinical studies implicate functional impairments of several neuroactive metabolites of the kynurenine pathway (KP), the major degradative cascade of the essential amino acid tryptophan in mammals, in the pathophysiology of neurologic and psychiatric diseases. A number of KP enzymes, such as tryptophan 2,3-dioxygenase (TDO2), indoleamine 2,3-dioxygenases (IDO1 and IDO2), kynurenine aminotransferases (KATs), kynurenine 3-monooxygenase (KMO), 3-hydroxyanthranilic acid oxygenase (3-HAO), and quinolinic acid phosphoribosyltransferase (QPRT), control brain KP metabolism in health and disease and are therefore increasingly considered to be promising targets for the treatment of disorders of the nervous system. Understanding the distribution, cellular expression, and regulation of KP enzymes and KP metabolites in the brain is therefore critical for the conceptualization and implementation of successful therapeutic strategies.

Significance Statement

Studies have implicated the kynurenine pathway of tryptophan in the pathophysiology of neurologic and psychiatric diseases. Key enzymes of the kynurenine pathway regulate brain metabolism in both health and disease, making them promising targets for treating these disorders. Therefore, understanding the distribution, cellular expression, and regulation of these enzymes and metabolites in the brain is critical for developing effective therapeutic strategies. This review endeavors to describe these processes in detail.:




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Seventy-Five Years of Interactions: The Department of Physiology and Pharmacology at Karolinska Institutet and Pharmacological Reviews [75th Anniversary Celebration Collection Special Section-Editorial]




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Summing Up Pharmacological Reviews 75th Anniversary Year and a Look to the Future [75th Anniversary Celebration Collection Special Section-Editorial]