Category Archives: Pain-Relief

Cannabis During Pregnancy May Have Long Term Mental Health Consequences for Children

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David-Baranger
Dr. Baranger

PainRelief.com Interview with:

David A. A. Baranger, PhD
Department of Psychological and Brain Sciences

Dr. Brogdan

Ryan Bogdan, PhD
Associate Professor of Psychological & Brain Sciences
Department of Psychiatry
Washington University in St Louis
St Louis, Missouri



PainRelief.com: What is the background for this study? What are the main findings?

David Baranger: Prenatal cannabis use is increasing in the United States. Prior work from our group found that prenatal cannabis exposure, particularly when it occurred after mothers learned they were pregnant, was associated with worse mental health outcomes in children aged 9-10.

In this study we followed up with this same group of children, who are now as old as 12, to ask whether anything has changed. Have they improved, or gotten worse? To our surprise, we found that children with prenatal cannabis exposure still had worse mental health outcomes – things had not gotten better, nor had they gotten worse.  

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Repurposing Old Drugs May Lead to Chronic Pain Relief Medications

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PainRelief.com Interview with:
Shane Cronin PhD
Staff scientist in the Penninger lab at IMBA
Former postdoc in the Woolf lab at Harvard Medical School and
F.M. Kirby Neurobiology Center, Boston Children’s Hospital

PainRelief.com: What is the background for this study?

Response: We and others have shown that the BH4 (tetrahydrobiopterin) metabolic pathway is upregulated in injured nerves and contributes to pain hypersensitivity in various rodent models of chronic pain. BH4 is a metabolite and an important cofactor for the aromatic amino acid hydroxylases for the production of dopamine and serotonin for example. it has also been previously shown to exert cofactor independent roles such as ROS scavenging and Fe3+ reduction in maintaining mitochondrial health.

Moreover, gene association studies in humans have also demonstrated a correlation between low levels of the bottleneck enzyme for BH4 biosynthesis, GCH1, and reduced severity of chronic pain (nicely reviewed here: PMID: 28667479). We believe that targeting this increase of BH4 after nerve injury is a viable strategy to reduce the ensuing pain. So, we set up a screening platform using transgenic mouse DRG neurons in which GFP is controlled by the Gch1 promoter – when Gch1 is turned on (as is in the case of nerve injury), GFP gets turned on as a proxy for BH4 activation and ‘in vitro cellular pain’. 

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Use of Nitrous Oxide for Pain Relief During Labor and Delivery Reevaluated in Light of Greenhouse Gas Emissions Concerns

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PainRelief.com Interview with:
Prof. Bernd Froessler MD, PhD, FANZCA
Department of Anaesthesia
Lyell McEwin Hospital
Clinical Professor
Discipline of Acute Care Medicine
University of Adelaide

Prof. Bernd Froessler

PainRelief.com: What is the background for this study?

Response: Nitrous oxide (N2O) is commonly used in Australia for labour analgesia. Its use in labour is potentially associated with aerosol generation. During the first wave of the COVID-19 pandemic of 2020, nitrous oxide was suspended on many birthing units to reduce the risk of transmission. This 19-day sudden disruption period at our hospital provided a ‘natural experiment’ and opportunity to re-evaluate the role and need for N2O, with the aim to determine the impact of withdrawing N2O on labour analgesia use and maternal and neonatal outcomes.

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Posture and Pill Shape Affect How Quickly Pain Relief Medications Dissolve and Work

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PainRelief.com Interview with:
Rajat Mittal Ph.D.
Professor of Mechanical Engineering 
Professor of Medicine (Secondary Appt.)
Johns Hopkins University

PainRelief.com: What is the background for this study?
What are the main findings?

Response: I have worked on the biomechanics and fluid dynamics associated with many different organ systems in the past including the cardiovascular system, the larynx and cerebral hemodynamics, and there is very extensive research being done on these organ systems by research groups all over the world. However, as I was looking to initiate research in some new directions, the implications of stomach biomechanics on important conditions such as diabetes, obesity, gastroparesis, malnutrition and GI infections etc. became apparent to me.

Furthermore, it was clear that bioengineering research in this arena lags other more established areas such as cardiovascular flows by at least 25 years and there seemed to be great opportunity to do impactful work. We focused on drug dissolution for our first project because it offered  “low-hanging fruit” in terms of new and impactful insights.

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Long Covid Symptoms Common, Especially Taste and Smell Issues

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PainRelief.com Interview with:
Elizabeth K. Rutkowski, MD MS
Associate Professor of Neurology
Director, Neurology Clerkship
Assistant Director, Adult Neurology Residency Program
Medical College of Georgia
Augusta University Medical Center

PainRelief.com: What is the background for this study?

Response We are looking at the long-term neurological effects of COVID-19. 80% of our subjects reported neurological symptoms with the most commonly reported symptoms being fatigue and headache.

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Headache: Clinical Trial Finds Oral Atogepant Reduced Monthly Migraine Days

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Dr. Trugman

PainRelief.com Interview with:

Joel M. Trugman, MD
Associate Vice President
Neuroscience Development
AbbVie

PainRelief.com:  What is the background for this study?  What are the main findings?

Response: Migraine is a disabling chronic disease characterized by recurrent headache attacks and associated symptoms, including nausea, phonophobia, or sensitivity to sound, and photophobia, or sensitivity to light.

The ADVANCE clinical trial is a phase 3, randomized, double-blind, placebo-controlled trial and examined the safety and efficacy of atogepant, an oral, small-molecule calcitonin gene-related peptide receptor antagonist in patients with episodic migraine. The primary efficacy endpoint was the change from baseline in mean monthly migraine days (MMD) across the 12-week treatment period. This analysis that was recently published examined the efficacy of atogepant using 4 levels of mean monthly migraine day (MMD) responder rates. 

This analysis found that all doses of atogepant significantly increased the proportion of participants who achieved a ≥25%, ≥50%, ≥75% and 100% reduction in mean monthly migraine days over 12 weeks of treatment.

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More Nonopioid Medications Prescribed for Pain Relief since CDC Released Chronic Pain Guidelines

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PainRelief.com Interview with:

JASON GOLDSTICK
Dr. Goldstick

Jason E. Goldstick, PhD
Injury Prevention Center
Department of Emergency Medicine
University of Michigan, Ann Arbor

PainRelief.com:  What is the background for this study?  What are the main findings?

Response: In 2016, the CDC released the Guideline for Prescribing Opioids for Chronic Pain. A primary goal of this voluntary guideline is that individuals should receive pain management care that provides the greatest overall benefit. Among other things, this may entail beginning opioid treatment only when the clinician determines that the expected benefits outweigh the risks.

Other research has shown reductions in opioid prescribing as reduced since the guideline release; this report examines whether there were changes in nonopioid pain medication prescribing.

Our overall findings were that nonopioid prescribing increased nationally following the guideline release, above and beyond what would’ve been predicted based on the pre-guideline trends, and this finding was generally consistent across patient subpopulations (e.g., those with vs. without prior opioid exposure).

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PTSD: Cognitive Behavioral Therapy for Pain Relief from PostTraumatic Headache

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PainRelief.com Interview with:
Don McGeary, PhD, ABPP
Vice Chair for Research, Rehab Medicine
Associate Professor, Rehab and Psychiatry
UT Health San Antonio

Don McGeary
Dr. McGeary

PainRelief.com:  What is the background for this study?  What are the main findings?

Response: This was a randomized clinical trial funded as part of the Consortium to Alleviate PTSD.  The primary aim of the study was to test the efficacy of a novel non-pharmacological intervention (called CBT for headache; CBTH) for posttraumatic headache (PTH) attributable to mild traumatic brain injury (mTBI). 

PTH is the most common and disabling consequence of mild traumatic brain injury and is a large concern for military service members and veterans in the post-9/11 deployment era because of the significant increase in head injury in this population over the last 20 years.  Posttraumatic headache has been recognized under various labels (including “shell shock” and “hero’s headache”) for over a century, but there are no proven, frontline treatments for PTH. PTH is unique among headache diagnoses because it is classified as a secondary headache (i.e., develops as a consequence of another medical phenomenon, mTBI) and because it is diagnosed based on the injury that led to the headache with no criteria for specific clinical characteristics.  Thus, the “phenotype” of posttraumatic headache is variable with the most frequent reports describing symptoms consistent with migraine AND tension type headaches. 

Unfortunately, because the underlying mechanisms of PTH differ from the primary headaches they resemble, frontline medications (abortive and prophylactic) may not have the same efficacy for PTH as they do for the primary headaches for which they are usually prescribed.  To complicate things further, PTH is often acquired in the context of a traumatic experience (blast, firearms overpressure, motor vehicle accident, other traumatic injury), so PTSD is highly comorbid with these headaches and there is an evolving body of research showing that PTSD can complicate, maintain and worsen pain.

Thus, our study sought to
(1) Test a novel non-pharmacological intervention tailored to PTH rehabilitation and
(2) Assess the relationship between PTSD and PTH to determine if preferred treatment pathways should include PTSD treatment as well. 

This resulted in a three-arm trial comparing CBTH to a gold-standard non-pharmacological treatment for PTSD and usual care in a large VA polytrauma center.

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Relivion Stimulator of Both Occipital and Trigeminal Nerves for Migraine Pain Relief

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PainRelief.com Interview with:
Oved Daniel MD
Headache and Facial Pain Clinic
Ramat-Aviv Medical Center
President of the Israeli Headache Association
Tel-Aviv, Israel

PainRelief.com:  What is the background for this study?  What are the main findings?

Response: Migraine patients experience disabling symptoms, which often left untreated or exasperated by currently available therapies, therefore, a significant unmet medical need for treating migraine pain remains.

Current external nerve stimulation devices only target one nerve and this study assessed the safety and performance of a new external nerve stimulation device that stimulates the two major nerve branches associate with pain (occipital and trigeminal) .

The Relivion MG is a non-invasive device that the patient can wear at home to treat their migraine pain and associate symptoms.

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Preclinical Trial Tests Combination of CBD:THC for Migraine Relief

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PainRelief.com Interview with:
Andrew F. Russo, Ph.D.
Professor, Dept. Molecular Physiology and Biophysics
University of Iowa
Iowa City, IA 52242

Dr. Russo

PainRelief.com:  What is the background for this study? 

Response: The company Schedule 1 Therapeutics approached us with an interest in testing a combination of CBD:THC in migraine. We thought the topic had tremendous public interest so we teamed up with them and won grants from the Migraine Research Foundation and from the National Institute on Drug Abuse.  

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