UCLA Study Finds Distinctive Vascular Eye Changes During Migraines

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PainRelief.com Interview with:
Katherine Podraza MD, PhD
Headache medicine specialist at Hartford HealthCare Headache Center
Assistant Professor of Neurology
University of Connecticut School of Medicine

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

Response: We know migraine is a complex and disabling neurovascular neurological disorder that has to do with the dysfunction of cortical networks in the brain. The eye given its direct connections to the brain through neuronal and vascular supply may also show changes related to migraine.

We studied changes in blood vessel structure and perfusion in the eye during migraine attacks using a non-invasive imaging technology called OCTA (Optical Coherence Tomography Angiography). As part of the study, patients with migraine (both with and without aura) were scanned both during an attack as well as between migraine attacks. In addition, we scanned healthy controls for comparison.

Our goal with the interictal scan (scans done when patients are not having an attack) was to find out if we can find imaging biomarkers for migraine. Our second goal was to use OCTA to find out if there are any changes in perfusion during a migraine attack. This could lead to a better understanding of the pathophysiology of migraine.

For the analysis, we specifically focused on two important regions in the retina, the fovea which processes our highest acuity vision and the parafovea which is the surrounding area and provides additional visual processing support. The fovea has the largest density of cone photoreceptors and also includes the foveal avascular zone which is devoid of blood vessels.

The parafovea surrounds the foveal region and is an area that has the thickest layer of retinal ganglion cells which transmit inputs from photoreceptors to various regions of the brain via the optic nerve. This region, given the complex interaction of neuronal cells and vascular inputs, was a perfect location to investigate migraine mechanisms.

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Gabapentinoids, Used for Epilepsy and Pain Relief, Associated with Exacerbation of Pulmonary Disease

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PainRelief.com Interview with:
Christel Renoux,  MD, PhD
Associate Professor
Dept. of Neurology & Neurosurgery
McGill University
Centre For Clinical Epidemiology H-416.1
Jewish General Hospital – Lady Davis Research Institute
Montreal Canada and
Alvi Rahman MSc
Pharmacoepidemiologist | HEOR Consulting
McGill University
Montreal, Quebec, Canada 

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

Response: . Gabapentinoids are anticonvulsant drugs that include the two drugs, gabapentin and pregabalin. They are indicated for the treatment of epilepsy and neuropathic pain, with minor variations between countries (pregabalin is also indicated for generalized anxiety disorders in some countries). However, they are often prescribed off-label for any type of pain, sometimes with the perception that they may be a safer alternative to opioids. Yet, gabapentinoids also may have serious adverse effects owing to the depressant effect they have on the central nervous system, which can lead to sedation or respiratory depression.

Several public health agencies have warned of breathing problems related to gabapentinoids, including the U.S. Food and Drug Administration (FDA), Health Canada, and the European Medicines Agency. Specifically, the FDA suggested that patients with respiratory risk factors, including those with chronic obstructive pulmonary disease (COPD) may be at higher risk. These warnings were based mainly on case reports, and there was a lack of large population-based studies on this topic, which led us to conduct this study assessing the association between gabapentinoid use and severe exacerbation of COPD (hospitalization).

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Prenatal Opioids Increase Risk of Multiple Adverse Health Effects

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PainRelief.com Interview with:
Erin Kelty PhD
Research Fellow
NHMRC Emerging Leader
School of Population & Global Health

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


Response: Recent research from Dr Lauren Jantzie at John Hopkins found that in mice prenatal opioid exposure altered the immune system.
Our research aimed to see if the same was true in children who had been exposed to opioids in utero.

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Cannabis for Chronic Pain Linked to Increased Risk of Arrhythmia

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PainRelief.com Interview with:
Anders Holt
Department of Cardiology
Copenhagen University Hospital—Herlev and Gentofte
Gentofte Hospitalsve
Hellerup, Denmark
Department of Epidemiology and Biostatistics
School of Population Health, University of Aucklan
Auckland, New Zealand

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

cannabis-marijuana

Response: The motivation for this study was the fact that medical cannabis is being made available as medical treatment for chronic pain in an increasing number of countries worldwide. Meanwhile, robust evidence on possible cardiovascular side-effects is very scarce. This could be worrisome since recreational cannabis previously have been associated with an elevated risk of arrhythmia and acute coronary syndromes.

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New Migraine Headaches Linked to Increased Motor Vehicle Crashes in Older Adults

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PainRelief.com Interview with:
Carolyn DiGuiseppi, MD, MPH, PhD
Professor of Epidemiology
Colorado School of Public Health
University of Colorado Denver
Aurora, CO 80045

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

Response: Migraine headache is a leading cause of disability worldwide and affects many older adults in the US and globally.

Some of the symptoms of an acute migraine, like fatigue, impaired concentration, headache, or dizziness, could affect older adults’ ability to drive safely.  In fact, past research has suggested that people with migraine are at higher risk of having injuries resulting from motor vehicle crashes (compared to people without this diagnosis). We wanted to learn whether the risk of crashes depends on whether people have had a migraine diagnosis for some time or have been recently diagnosed, and whether being treated with migraine medications affects the risk of crashes.

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Study Aims to Improve Responsiveness to Hypnosis, Better Able to Treat Pain and Other Conditions

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PainRelief.com Interview with:
Afik Faerman, PhD
NIMH T32 Postdoctoral Fellow
Psychiatry and Behavioral Sciences
Stanford University
President-elect
Division 30 (Psychological Hypnosis)
American Psychological Association

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

Response: Hypnosis offers an effective drug-free approach to treat a variety of psychophysiological symptoms, particularly pain. Unfortunately, not everyone benefits equally from hypnosis. The ability to experience suggestions in hypnosis (hypnotizability) is distributed in a bell-shaped curve across the population, with only about 20% considered highly hypnotizable. We wanted to test if we could make the brains of people who were not highly hypnotizable act and function as if they were, hoping such a possibility would open the door for improving therapy.

Several brain structures were previously linked to responsiveness to hypnosis, and modulating them could, theoretically, increase hypnotizability. Based on previous work, we created an approach (termed SHIFT) using individual brain scans to find the best part of the brain to stimulate.

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Rutgers Study Evaluates Telehealth Delivered Mindfulness Therapy in OUD Patients with Chronic Pain

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PainRelief.com Interview with:
Nina A. Cooperman, PsyD
Department of Psychiatry
Division of Addiction Psychiatry
Rutgers Robert Wood Johnson Medical School
Piscataway, New Jersey

Dr Nina Cooperman, Photo by John O’Boyle

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

Response: This study aimed to evaluate the impact of a novel intervention, Mindfulness Oriented Recovery Enhancement (MORE), on opioid use and chronic pain among individuals receiving methadone treatment (MT).

The main goal of this study was to conduct a clinical trial to assess online MORE, delivered remotely, through secure video or phone conferencing, with respect to a range of clinical outcomes.

This study will involve a 2-arm individually randomized controlled trial design that compares MORE and treatment as usual (TAU). 

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Opioid Use Disorder: Rutgers Study Demonstrates Improved Mood and Emotional Regulation with Guided Mindfulness

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PainRelief.com Interview with:
Suchismita Ray, Ph.D.
Associate Professor                                      
Department of Health Informatics            
Rutgers School of Health Professions
Rutgers Biomedical and Health Sciences
Rutgers, The State University of New Jersey
Newark, NJ 07101

Dr. Suchismita Ray
Photo by John O’Boyle

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

Response: In this pilot study, we examined longer-term changes after the Mindfulness-Oriented Recovery Enhancement (MORE) intervention and immediate effects of a brief MORE guided meditation session in women with opioid use disorder (OUD) who were on medications for OUD (MOUD). Participants completed the first assessment, then the 8-week MORE intervention (once weekly for two hours) during residential treatment, and then the second assessment.


The assessments were identical and conducted at Rutgers University Brain Imaging Center in Newark.

First, participants completed an emotion regulation questionnaire, and then they entered the magnetic resonance imaging (MRI) environment for scanning. Participants listened to a 10-minute guided MORE meditation in the scanner while viewing a picture of an outdoor garden, and brain images were recorded to measure functional connectivity (i.e., brain communication) during the meditation. We examined the immediate effects of a 10-minute guided MORE meditation on mood and craving. We further examined the effects of 8-week MORE intervention on changes in emotional regulation difficulty and brain communication.

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Cancer Doctors Prescribing Fewer Opioids Since Opioid Crisis

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PainRelief.com Interview with:
Joshua Kra, MD
Assistant Professor of Medicine, Rutgers NJMS
Division of Hematology/Oncology
Rutgers Cancer Institute of New Jersey at University Hospital

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

Response: We aimed to characterize pain management practices by medical oncologists to assess whether CDC guidelines from 2017 for nononcologic settings changed prescribing patterns for oncologists.

PainRelief.com: What are the main findings?

Response: There was a significant decrease in opioid prescriptions from medical oncologists starting in 2017, which coincided with the recognition of the opioid crisis as a national public health emergency and the publication of CDC guidelines for opiate prescribing in non-cancer settings. This would suggest these factors contributed to how oncologists changed their management of opioid prescriptions for cancer patients.

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Opioid Prescriptions by Surgeons for Post-Op Pain Relief Decline, but Progress Has Slowed

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PainRelief.com Interview with:
Kao-Ping Chua, MD, PhD
Susan B. Meister Child Health Evaluation and Research Center
Department of Pediatrics, University of Michigan Medical School
Ann Arbor MI 48109

Dr. Kao-Ping Chua
Dr. Kao-Ping Chua

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

Response: Surgery is one of the most common reasons for opioid prescribing. Ensuring the appropriateness of opioid prescribing by surgeons is important, as prescriptions that exceed patient need result in leftover pills that can be a source for misuse or diversion. Although there have been numerous recent policy and clinical efforts to improve opioid prescribing by surgeons, recent national data on this prescribing are unavailable.

In this study, we analyzed a comprehensive prescription dispensing database that captures 92% of prescriptions from U.S. pharmacies. From 2016 to 2022, we found that the rate of surgical opioid prescriptions at the population level declined by 36%, while the average amount of opioids in these prescriptions declined by 46%. As a result of these two changes, the total amount of opioids dispensed to surgical patients declined by 66%.

However, there were two caveats:

First, the decline in surgical opioid prescribing was most rapid before 2020 and has slowed since then.

Second, the average surgical opioid prescription in December 2022 still contained the equivalent of about 44 pills containing 5 milligrams of hydrocodone, far higher than most patients need after surgery.

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