Posts classified under: Alphabetical

Ranmal Samarasignhe, M.D., Ph.D.

Biography

Dr. Ranmal Samarasinghe received his MD and PhD degrees from the University of Pittsburgh in 2013. He completed his residency in adult neurology at UCLA in 2017 and then completed an NIH funded post-doctoral research and clinical fellowship at UCLA from 2017-2020. During this period, Dr. Samarasinghe obtained clinical training in epilepsy and neurophysiologic intraoperative monitoring. He also performed research developing stem cell-based models of epilepsy and autism, which is the foundation of his own laboratory.

Dr. Samarasinghe’s laboratory seeks to understand the mechanisms of neural network formation and dysfunction in epilepsy and autism. His efforts are focused on 3D brain-like structures called human brain organoids that are grown in a laboratory dish and that are derived from stem cells. Brain organoids can be generated from the stem cells of individual patients and may provide unique insights into the causes of human neurological diseases such as epilepsy and autism. His laboratory is developing and utilizing multiple methodologies including whole-organoid multiphoton based calcium indicator imaging, voltage sensors, traditional extracellular recordings, high throughput genomic screens, and super-resolution synaptic imaging to interrogate the developmental trajectory of nascent neural networks in organoid models. Dr. Samarasinghe will also continue to manage patients with epilepsy and autism in his clinic and perform neurophysiologic intraoperative monitoring for surgical cases performed at UCLA and affiliated hospitals.

Ziva Cooper, Ph.D.

Publications

A selected list of publications:

Lake Stephanie, Walsh Zach, Kerr Thomas, Cooper Ziva D, Buxton Jane, Wood Evan, Ware Mark A, Milloy M J   Frequency of cannabis and illicit opioid use among people who use drugs and report chronic pain: A longitudinal analysis PLoS medicine, 2019; 16(11): e1002967.
Bedi Gillinder, Hao Xuejun, Van Dam Nicholas T, Cooper Ziva D, Rubin Eric, Vadhan Nehal P, Marino Leslie, Haney Margaret   Social motivational processing and interpersonal function in aging cocaine smokers Addiction biology, 2019; 24(5): 1044-1055.
Adinoff Bryon, Cooper Ziva D   Cannabis legalization: progress in harm reduction approaches for substance use and misuse The American journal of drug and alcohol abuse, 2019; 45(6): 707-712.
Chao Thomas, Haney Margaret, Cooper Ziva D, Vadhan Nehal P, Van Dam Nicholas T, Van Snellenberg Jared, Bedi Gillinder   Cognitive function in aging cocaine smokers Journal of psychopharmacology (Oxford, England), 2019; 33(7): 801-810.
Haney Margaret, Cooper Ziva D, Bedi Gillinder, Herrmann Evan, Comer Sandra D, Reed Stephanie Collins, Foltin Richard W, Levin Frances R   Guanfacine decreases symptoms of cannabis withdrawal in daily cannabis smokers Addiction biology, 2019; 24(4): 707-716.
Cooper Ziva D, Adinoff Bryon   Necessity of addressing motivations for cannabis use to guide research The American journal of drug and alcohol abuse, 2019; 45(6): 547-550.
Herrmann Evan S, Cooper Ziva D, Bedi Gillinder, Ramesh Divya, Reed Stephanie Collins, Comer Sandra D, Foltin Richard W, Haney Margaret   Varenicline and nabilone in tobacco and cannabis co-users: effects on tobacco abstinence, withdrawal and a laboratory model of cannabis relapse Addiction biology, 2019; 24(4): 765-776.
Cooper Ziva D, Bedi Gillinder, Ramesh Divya, Balter Rebecca, Comer Sandra D, Haney Margaret   Impact of co-administration of oxycodone and smoked cannabis on analgesia and abuse liability Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2018; 43(10): 2046-2055.
Piomelli Daniele, Weiss Susan, Boyd Graham, Pacula Rosalie Liccardo, Cooper Ziva   Cannabis and the Opioid Crisis Cannabis and cannabinoid research, 2018; 3(1): 108-116.
Cooper Ziva D, Poklis Justin L, Liu Fei   Methodology for controlled administration of smoked synthetic cannabinoids JWH-018 and JWH-073 Neuropharmacology, 2018; 134(Pt A): 92-100.
Cooper Ziva D, Craft Rebecca M   Sex-Dependent Effects of Cannabis and Cannabinoids: A Translational Perspective Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2018; 43(1): 34-51.
Piomelli Daniele, Cooper Ziva, Abrams Donald, Grant Igor, Patel Sachin   A Guide to the National Academy of Science Report on Cannabis: An Exclusive Discussion with Panel Members Cannabis and cannabinoid research, 2017; 2(1): 155-159.
Cooper Ziva D, Haney Margaret   Sex-dependent effects of cannabis-induced analgesia Drug and alcohol dependence, 2016; 167(1): 112-20.
Herrmann Evan S, Cooper Ziva D, Bedi Gillinder, Ramesh Divya, Reed Stephanie C, Comer Sandra D, Foltin Richard W, Haney Margaret   Effects of zolpidem alone and in combination with nabilone on cannabis withdrawal and a laboratory model of relapse in cannabis users Psychopharmacology, 2016; 233(13): 2469-78.
Haney Margaret, Malcolm Robert J, Babalonis Shanna, Nuzzo Paul A, Cooper Ziva D, Bedi Gillinder, Gray Kevin M, McRae-Clark Aimee, Lofwall Michelle R, Sparenborg Steven, Walsh Sharon L   Oral Cannabidiol does not Alter the Subjective, Reinforcing or Cardiovascular Effects of Smoked Cannabis Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2016; 41(8): 1974-82.
Cooper Ziva D, Johnson Kirk W, Pavlicova Martina, Glass Andrew, Vosburg Suzanne K, Sullivan Maria A, Manubay Jeanne M, Martinez Diana M, Jones Jermaine D, Saccone Phillip A, Comer Sandra D   The effects of ibudilast, a glial activation inhibitor, on opioid withdrawal symptoms in opioid-dependent volunteers Addiction biology, 2016; 21(4): 895-903.
Cooper Ziva D   Adverse Effects of Synthetic Cannabinoids: Management of Acute Toxicity and Withdrawal Current psychiatry reports, 2016; 18(5): 52.
Haney Margaret, Ramesh Divya, Glass Andrew, Pavlicova Martina, Bedi Gillinder, Cooper Ziva D   Naltrexone Maintenance Decreases Cannabis Self-Administration and Subjective Effects in Daily Cannabis Smokers Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2015; 40(11): 2489-98.
Balter Rebecca E, Cooper Ziva D, Haney Margaret   Novel Pharmacologic Approaches to Treating Cannabis Use Disorder Current addiction reports, 2014; 1(2): 137-143.