Life Extension Magazine March 2010
Optimal Arthritis Control
Multi-Targeted Compounds Combat Inflammation
By Julius Goepp, MD
According to the most recent scientific research, aging individuals afflicted with rheumatoid arthritis are at 60% great-er risk of dying from heart disease than the general population.1 The vascular damage seen in rheumatoid individuals appears to be an accelerated form of atherosclerosis.2
Similar analysis shows that over time, rheumatoid arthritis sufferers also sustain damage to the eyes, lungs, and skin.3-6
The common factor linking rheuma-toid arthritis to these potentially deadly conditions is system-wide, chronic inflammation in the body. The same systemic inflammatory events, especially those involving the potent cytokine known as TNF-alpha, contribute to atherosclerosis even in people who don’t have rheumatoid arthritis7—and that’s why we all need to pay special attention to limiting inflammatory changes throughout our lifetime.
Until recently, mainstream medicine’s focus on highly profitable single-target drugs (like Enbrel®) has left the 1.3
million rheumatoid arthritis sufferers in this country with few attractive options. While effective at controlling symptoms, these drugs are expensive and produce potentially life-threatening side effects associated with chronic suppression of immunity, such as serious infections and certain cancers.8-10
Fortunately, a novel set of multi-targeted natural agents has been identified that can disrupt the inflammatory cascade involved in rheumatoid arthritis at many stages. These agents have also been shown to reduce joint pain, stiffness, and deterioration of cartilage.
In this article, you will learn about the latest research on curcuminoids and andrographolides—natural compounds shown to specifically target the painful conditions associated with rheumatoid arthritis and the underlying genetic and biochemical factors that cause rheumatoid inflammation.
formof curcumin which early evidence shows may be as effective in alleviating the symptoms of rheumatoid arthritis as the non-steroidal anti-inflammatory (NSAID) drug diclofenac! Animal studies already demonstrate that curcumin relieves pain comparably to diclofenac, so this is an exciting and evolving field of research.11
Rheumatoid Arthritis—Inflammation Run Amok
While its causes are not fully understood, researchers have long known that rheumatoid arthritis (RA) is an autoimmune disorder.
An optimally functioning immune system remains on constant alert, patrolling for invading microbes and emerging cancer cells. When launched into action, various immunomodulating agents—including the cell-signaling proteins known as cytokines—provoke an inflammatory response in the body. In healthy individuals, the immune system keeps this inflammatory response under control to prevent injury to the body itself.12
For the unfortunate individuals stricken with rheumatoid arthritis, this balance is disrupted—the body mistakes some of its own tissue as “foreign,” resulting in a chronic inflammatory response. The immune system attacks the delicate synovial membranes that line the joints, producing pain, swelling, bone loss, and overgrowth of the membranes themselves. Eventually joints stiffen, limiting range of motion, accompanied by progressively worsening pain and a severe decline in quality of life.13
RA is one of a growing handful of diseases in which experts have recognized the central role of an inflammatory cytokine called tumor necrosis factor-alpha (TNF-alpha)—the “master regulator” of inflammation in many systems of the body. These conditions—which include psoriasis and inflammatory bowel disease—are collectively known as “TNF Related Chronic Inflammatory Diseases,” or TRECID.14
Mainstream medical research remains largely focused on various drugs that block TNF-alpha as a way to try to stop the damage involved in TRECID diseases.15 Though TNF-blockers like golimumab, infliximab, and adalimumab can be effective, there are some individuals for whom these interventions provide little or no relief.16-18 TNF-blockers can also be extremely expensive, requiring painful periodic injections, with an array of side effects, some of which may paradoxically exacerbate autoimmune disease.18-20
Another main class of pharmaceutical interventions for RA, known as disease-modifying anti-rheumatic drugs (DMARDs), include methotrexate, cyclosporine, and cytoxan.21 These drugs are often less costly, but generally no better in terms of efficacy and side effect profile.22,23
The truth is that tolerable, safe treatment of RA continues to elude pharmaceutical solutions—in large part because they are single-target therapies focused on a limited number (usually just one) of the underlying mechanisms behind RA. The powerful disruption of the immune system by those drugs often produces a comprehensive state of immune deficiency that opens the patient to potentially disastrous infections—the FDA has recently issued “Black Box” warnings for some of the biological agents in this class.10
A novel set of low-cost, natural compounds have emerged that specifically attack the inflammation associated with rheumatoid arthritis at multiple points in the inflammatory process. Together they provide the potential for multi-targeted relief, both “upstream” within the inflammatory cascade—at earlier stages than TNF-blocking drugs—and “downstream,” at later stages than traditional anti-rheumatic drugs (DMARDs).
Andrographis: A Multi-Modal Inflammation Fighter
Over the past 25 years, extracts of the Asian herb Andrographis paniculata have aroused considerable scientific interest owing to their apparent power to favorably modify immune system function.24-26 Its bioactive components, called andrographolides,27 are well absorbed after oral dosing28 and have been extensively tested as anti-inflammatory agents.29
Unlike the single-targeted action of TNF-blockers and anti-rheumatic drugs, andrographolides stimulate beneficial activity at multiple points in the inflammatory process, providing mutually reinforcing effects.29
Andrographolides inhibit activity of the pro-inflammatory compound known as inducible nitric oxide synthase (iNOS). This helps exert a powerful anti-inflammatory effect.30 Readers who are familiar with the vascular benefits of eNOS (endothelial NOS) should note that, unlike eNOS, iNOS is pro-inflammatory and often involved in disease states, where it is desirable to inhibit its actions.
Andrographolides suppress production of the pro-inflammatory cytokines TNF-alpha and prostaglandin E2 (PGE-2), preventing their gene expression at multiple levels.31,32 By doing so they downregulate the chemical signaling pathways that cells use to “tell” each other to initiate the inflammatory response that plays a key role in rheumatoid arthritis.33
Scientific analysis has further revealed that andrographolides operate “upstream” within the process of the inflammatory cascade by blocking the effects of the pro-inflammatory transcription factor nuclear factor-kappaB (NF-kB).34
NF-kB is found in almost all human cells. It plays a key role in cellular responses to stress, cytokines, free radicals, oxidized low-density lipoprotein (LDL), and bacterial or viral pathogens. Accordingly, its central role as a first-responder to oxidative damage, infection, and toxin-induced stress links it to inflammation, cancer, and chronic disease.35 NF-kB tightly regulates virtually all factors downstream in the inflammatory cascade, including cytokines known as interleukins, hormones known as prostaglandins, and TNF-alpha.
By blocking NF-kB, andrographolides inhibit production of a host of inflammatory mediators in one simple step.36 Just as critically, they permit normal activity of vital immune surveillance cells as they simultaneously suppress over-active inflammatory cells, as demonstrated in animal studies.37
This is a critical feature that distinguishes andrographolides from most anti-rheumatic drugs (DMARDS). While andrographolides suppress inflammatory immune factors,36 DMARDs can suppress immune function in general, resulting in an increased risk of infection.38
Andrographolides also act as powerful antioxidants, limiting the number of free radicals thrown off by inflammatory cells and reducing overall inflammation and pain in animal studies.39-43
Clinical Breakthroughs in Natural Arthritis Relief
In 2005, a group of researchers led by Dr. Raphael A. Burgos at the Universidad Austral in Valdivia, Chile, began publishing seminal work on the properties of a select formulation of andrographolides in countering the effects of rheumatoid arthritis.
Burgos’s group discovered that the formulation suppressed inflammatory mediators such as interferon-gamma and interleuklin-2 (IL-2), while protecting against cell death induced by corticosteroids.44 They further demonstrated that andrographolides directly prevent NF-kB from binding to DNA in inflammatory cells, thereby preventing it from activating production of dangerous inflammatory mediators.45
In 2009, Burgos’s team was able to demonstrate this andrographolide formulation’s dramatic anti-rheumatic effects for the first time in humans.
Just 200 mg daily for 18 weeks resolved RA-related anemia, restoring red blood cell levels to the normal range while lowering the inflammatory marker C-reactive protein (CRP) to normal.46
When rheumatoid arthritis sufferers were given 200 mg of andrographolides or the same dose of a non-steroidal anti-inflammatory drug (NSAID), the patients receiving the andrographolides had a significant drop in RA-specific auto-antibodies (antibodies directed against their own tissue), while the NSAID group saw a rise in some of those levels.47 Relief from joint pain and rigidity was seen in the andrographolide and the NSAID groups.
... Scientific advances in our understanding of curcumin’s molecular action have led to its application in the treatment of rheumatoid arthritis.
After these two preliminary, unpublished studies validated the efficacy of andrographolides, Dr. Burgos’s group subsequently performed a larger study: a prospective, randomized, double blind, placebo-controlled clinical trial. They published the results in late 2009.48 Significant improvements over placebo were found for joint pain and swelling as well as the number and severity of tender, swollen joints. Quality of life scores also improved significantly in the supplemented subjects, and levels of some biochemical markers of immune system activation were decreased in the group who took the active supplement.