Tag Archives: anti-inflammatory

In search of a treatment for Alzheimer’s disease and potential immunonosuppresive therapeutic interventions.

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Abstract

“Alzheimer’s disease (AD) is a serious neurodegenerative disease of aging. Recent projections of the dramatic increase in AD incidence worldwide by 2050 reveal its magnitude as a world-wide health crisis and underscore the urgent need to understand the etiology of AD in order to develop therapeutic interventions. A popular debate among scientists has traditionally pitted those in support of Beta amyloid protein as a causative factor (“Baptists”) against others who implicate tau hyperphosphorylation (“Tauists”). Considering the significance of Beta amyloid protein and hyperphosphorlyated tau protein aggregates in AD pathology, this article delves into the nature of inflammation associated with these aggregates. Aspects of inflammation focus on microglia, resident immune cells of the CNS that are activated during AD inflammation and are known to play a significant role in pathogenesis. This article discusses the role of microglia, inflammation, and the immune response as a middle ground in the debate between the “Tauists” and the “Baptists” respective positions. It explores recent advances in immunotherapy and supports continued research in and use of immunosuppressive regimens as potential therapeutic interventions for AD.”

http://www.ncbi.nlm.nih.gov/pubmed/18766151

Cannabis May Cut Alzheimer’s Risk – Discovery News

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“For those who have inhaled, there may be some good news: Marijuana use may cut the risk of developing Alzheimer’s disease by reducing inflammation in the brain…

The findings may explain studies showing those who regularly used marijuana in the 1960s and 1970s are now less likely to develop Alzheimer’s disease than their non-smoking contemporaries.

Under a National Institutes of Health grant, researchers used a synthetic drug similar to marijuana to treat rats with brain inflammation typically associated with Alzheimer’s disease, a form of dementia that afflicts 4.5 million people in the United States alone.”

Read more: http://dsc.discovery.com/news/2006/10/19/marijuana_hea.html

Marijuana Ingredient May Help Alzheimer’s – WebMD

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“Chemical Counters Brain Problems in Alzheimer’s Disease, Says Spanish Study.
New clues about Alzheimer’s disease have emerged from a Spanish study of marijuana. The drug’s active ingredients — cannabinoids — help prevent brain problems seen in Alzheimer’s, say the scientists.

The findings showed that “cannabinoids work both to prevent inflammation and to protect the brain,” says researcher Maria de Ceballos in a news release. That “may set the stage for [cannabinoids’] use as a therapeutic approach for [Alzheimer’s disease].”

The cannabinoids completely prevented activation of cells that trigger inflammation. These cells gather near plaque and are believed to be involved in the development of Alzheimer’s disease.

“Our results indicate that cannabinoid receptors are important in the pathology of Alzheimer’s disease and that cannabinoids succeed in preventing the neurodegenerative process occurring in the disease,” write the researchers in the journal.”

Read more: http://www.webmd.com/alzheimers/news/20050223/marijuana-ingredient-may-help-alzheimers

Marijuana Ingredient May Help Alzheimer’s – FoxNews

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“New clues about Alzheimer’s disease have emerged from a Spanish study of marijuana. The drug’s active ingredients — cannabinoids — help prevent brain problems seen in Alzheimer’s, say the scientists. 

The new study didn’t test cannabinoids on people living with Alzheimer’s disease. Instead, the researchers focused on human brain tissue samples and conducted cannabinoid experiments on rats. 

The findings showed that “cannabinoids work both to prevent inflammation and to protect the brain,” says researcher Maria de Ceballos in a news release. That “may set the stage for [cannabinoids’] use as a therapeutic approach for [Alzheimer’s disease].””

Read more: http://www.foxnews.com/story/0,2933,148518,00.html

Read more: http://www.foxnews.com/story/0,2933,148518,00.html#ixzz2HIrp1uDH

Marijuana May Slow Alzheimer’s Memory Loss

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“New evidence from animal models suggests marijuana may contain compounds that slow the memory loss associated with Alzheimer’s disease. Older rats treated with a synthetic chemical similar to marijuana significantly improved their ability to navigate a maze. Researchers believe the strong anti-inflammatory effects of marijuana slow Alzheimer’s progression.”

marijuanaleaves

“The link between chronic inflammation and the progression of Alzheimer’s is compelling, said Gary Wenk, a study co-author and a professor of psychology at Ohio State University.

“Inflammation in the brain is part of aging,” Wenk said. “It happens to almost all of us as we age. But in some cases, this inflammation gets out of hand and causes serious damage.”

Treatment with a synthetic compound similar to marijuana reduced inflammation in older rats in addition to making the animals “smarter,” said Wenk, who is also a professor of neuroscience and molecular virology, immunology and medical genetics.

“The compound substantially improved the memories of the older rats,” he said. “These animals were able to hold on to key details of a specific task. Untreated older rats, on the other hand, were not.”

The researchers presented their findings at the annual Society for Neuroscience meeting.

Evidence suggests that people who regularly smoked marijuana in the 1960s and 1970s rarely develop Alzheimer’s disease, said Wenk, adding that researchers are eager to develop a drug with the anti-inflammatory properties of marijuana, but without the drug’s psychoactive effects.”

Read more: http://psychcentral.com/news/2006/10/23/marijuana-may-slow-alzheimers-memory-loss/350.html

The therapeutic potential of the endocannabinoid system for Alzheimer’s disease.

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“Based on the complex pathology of AD, a preventative, multimodal drug approach targeting a combination of pathological AD symptoms appears ideal. Importantly, cannabinoids show anti-inflammatory, neuroprotective and antioxidant properties and have immunosuppressive effects. Thus, the cannabinoid system should be a prime target for AD therapy. The cannabinoid receptor 2 appears to be a promising candidate but its role in AD has to be investigated cautiously. Furthermore, the phytocannabinoid cannabidiol is of particular interest as it lacks the psychoactive and cognition-impairing properties of other cannabinoids. In conclusion, future research should focus on the evaluation of the effects of manipulations to the endocannabinoid system in established animal models for AD, combined with early-phase studies in humans.”

http://www.ncbi.nlm.nih.gov/pubmed/22448595

Scientists are high on idea that marijuana reduces memory impairment

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“The more research they do, the more evidence Ohio State University scientists find that specific elements of marijuana can be good for the aging brain by reducing inflammation there and possibly even stimulating the formation of new brain cells.

The research suggests that the development of a legal drug that contains certain properties similar to those in marijuana might help prevent or delay the onset of Alzheimer’s disease. Though the exact cause of Alzheimer’s remains unknown, chronic inflammation in the brain is believed to contribute to memory impairment.

Any new drug’s properties would resemble those of tetrahydrocannabinol, or THC, the main psychoactive substance in the cannabis plant, but would not share its high-producing effects.

.”Could people smoke marijuana to prevent Alzheimer’s disease if the disease is in their family? We’re not saying that, but it might actually work. What we are saying is it appears that a safe, legal substance that mimics those important properties of marijuana can work on receptors in the brain to prevent memory impairments in aging. So that’s really hopeful,” Wenk said”

Read more: http://phys.org/news146320102.html

Medical Cannabis Helps ALS Patient Outlive her Own Doctors

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“In April, Cathy Jordan sat on a panel at the Cannabis Therapeutics Conference in Arizona. Before taking the stage, she discussed the medical use of cannabis for ALS with Jahan Marcu, the Philadelphia Medical Marijuana Examiner.

Cathy Jordan first noticed something was wrong in summer of 1985 when she couldn’t pick things up. Her muscles weren’t responding. In 1986, she was diagnosed with ALS (Amyotrophic Lateral Sclerosis). ALS, also known as Lou Gehrig’s disease, is characterized by the death of motor neurons leading to loss of limb control, breathing, swallowing, speech and widespread cellular dysfunction. Most cases of ALS are sporadic; it is not a viral or autoimmune disease.

Most people start using a feeding tube because they are afraid of choking to death”, says Cathy.

In 1986, she was given 3 – 5 years to live according to her neurologist. Nearly 3 decades later, she is still alive and living with ALS.

“All my docs are retiring or dead. I’ve outlived 5 support groups and 4 neurologists,” said Cathy. This actually posed a problem for Cathy who lost her social security benefits because she lived passed her expiration date. The state of Florida said her ID and regular documentation wasn’t good enough to prove she was alive and to continue to receive benefits. She had to ask her neurologist to fill out paperwork to prove she was still alive.

Mrs. Jordan began using Cannabis from a Florida grower to treat her ALS in the late 80’s. “Donny Clark provided my medicine, grown in the Myakka River Valley…he was busted and sentenced to life in prison, and that strain of Cannabis was lost.”

“You know, they say the fountain of youth is in Florida. Maybe it was something in the soil that made this plant helps me…and I don’t understand why doctors wouldn’t study me. But I still would like to know why this is helping me.”

At first, doctors wouldn’t accept that marijuana could be responsible for Cathy’s extended life span. Other doctors thought that smoking anything would impair her lung function and even threatened to have this paralyzed women committed, simply based on the fact that she thought Cannabis was actually helping her.

“I visited a neurologist at Duke University. When I told him that I was smoking Cannabis, he didn’t know what to do with me. He was afraid. He wouldn’t even take my blood pressure because I was using an illegal drug.”

Cathy adds:

“I asked my docs if they would take a drug if it was neuroprotective, an antioxidant and an anti-inflammatory. They say ‘yes’ and ask me if I know of one. Cannabis, I tell them.”

Nearly three decades later, the science has caught up with this miracle patient. Scientists created a mouse with ALS, which was very exciting for Cathy. Research has shown that THC and other cannabinoids can benefit mice with ALS. The mounting evidence of cannabinoids halting the progression of ALS has started to change the attitudes of doctors and prominent researchers have recently called for ALS clinical trials with Cannabis or cannabinoids.

“They all agree today that I should smoke Cannabis,” says Cathy. “Twenty six years later, my original neurologist fought [successfully] to make sure Cannabis is legal for patients in Delaware.”

Researchers think Cannabis may help ALS patients relieving pain, spasticity, drooling, appetite loss and has minimal drug-drug interactions and toxicity.

“There are ALS patients associations that fight for the right of patients to die with dignity. But what about my right to life?” asks Cathy. “Keeping my medicine illegal removes my right to life.””

By:

http://www.examiner.com/article/medical-cannabis-helps-als-patient-outlive-her-own-doctors

Cathy Jordan’s Story

 

Cannabis May Extend Life Expectancy Of Lou Gehrig’s Disease Patients, Study Says

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Cannabis therapy may reduce symptoms and prolong survival in patients diagnosed with amyotrophic lateral sclerosis (ALS aka Lou Gehrig’s disease), according to a scientific review published online last week by the American Journal of Hospice & Palliative Medicine.

Investigators at the University of Washington Medical Center in Seattle and Temple University in Pennsylvania reviewed preclinical and anecdotal data indicating that marijuana appears to treat symptoms of ALS as well as moderate the course of the disease.

Authors wrote: “Preclinical data indicate that cannabis has powerful antioxidative, anti-inflammatory, and neuroprotective effects. … Cannabis also has properties applicable to symptom management of ALS, including analgesia, muscle relaxation, bronchodilation, saliva reduction, appetite stimulation, and sleep induction. … From a pharmacological perspective, cannabis is remarkably safe with realistically no possibility of overdose or frank physical addiction. There is a valid, logical, scientifically grounded rationale to support the use of cannabis in the pharmacological management of ALS.”

They added, “Based on the currently available scientific data, it is reasonable to think that cannabis might significantly slow the progression of ALS, potentially extending life expectancy and substantially reducing the overall burden of the disease.”

Investigators concluded, “There is an overwhelming amount of preclinical and clinical evidence to warrant initiating a multicenter randomized, double-blind, placebo-controlled trial of cannabis as a disease-modifying compound in ALS.”

Writing in the March 2004 issue of the journal Amyotrophic Lateral Sclerosis & Other Motor Neuron Disorders, investigators at the California Pacific Medical Center in San Francisco reported that the administration of THC both before and after the onset of ALS symptoms staved disease progression and prolonged survival in animals compared to untreated controls. To date, however, no clinical trials have assessed the use of marijuana or any of the plant’s cannabinoids on patients diagnosed with ALS.

Lou Gehrig’s Disease is a fatal, progressive neurodegenerative disorder that is characterized by the selective loss of motor neurons in the spinal cord, brain stem, and motor cortex. An estimated 30,000 Americans are living with ALS, which often arises spontaneously and afflicts otherwise healthy adults. An estimated 70 to 80 percent of patients with ALS die within three to five years following the onset of disease symptoms.”

By: Paul Armentano, NORML Deputy Director

http://www.medicann.com/conditions-and-diseases/cannabis-may-extend-life-expectancy-of-lou-gehrig%e2%80%99s-disease-patients-study-says/

Article originally available at: http://blog.norml.org/2010/05/19/marijuana-may-extend-life-expectancy-of-lou-gehrig’s-disease-patients-study-says/

 

The CB2 cannabinoid agonist AM-1241 prolongs survival in a transgenic mouse model of amyotrophic lateral sclerosis when initiated at symptom onset.

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“Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease characterized by progressive motor neuron loss, paralysis and death within 2-5 years of diagnosis. Currently, no effective pharmacological agents exist for the treatment of this devastating disease. Neuroinflammation may accelerate the progression of ALS. Cannabinoids produce anti-inflammatory actions via cannabinoid receptor 1 (CB1) and cannabinoid receptor 2 (CB2), and delay the progression of neuroinflammatory diseases…

 …treatment with non-selective cannabinoid partial agonists prior to, or upon, symptom appearance minimally delays disease onset and prolongs survival through undefined mechanisms…

…Δ9-Tetrahydrocannabinol (Δ9-THC) is the main psychoactive constituent in the plant Cannabis sativa (marijuana) and produces its effects by activation of cannabinoid receptor 1 (CB1) and cannabinoid receptor 2 (CB2) cannabinoid receptors. CB1 receptors are expressed throughout the CNS, while CB2 receptors are expressed predominantly in immune cells and non-neuronal tissues. Therapeutic agents which modulate the cann-abinoid system are effective in treating a wide variety of disorders characterized by inflammation. More specifically, drugs which activate CB2 receptors successfully improve the symptoms of several inflammatory diseases…

More importantly, daily injections of the selective CB2 agonist AM-1241, initiated at symptom onset, increase the survival interval after disease onset by 56%. Therefore, CB2 agonists may slow motor neuron degeneration and preserve motor function, and represent a novel therapeutic modality for treatment of ALS.”

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2819701/