H B Lindsley

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Patients with rheumatoid arthritis who weren't adequately controlled on methotrexate alone were switched to a combination of methotrexate plus leflunomide and followed for up to 48 weeks. Those who had been on placebo and then switched to leflunomide without a loading dose caught up in response rates to those who had been on leflunomide from the start. Skipping the loading dose also meant fewer side effects like elevated liver enzymes, diarrhea, and nausea.

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This randomized controlled trial tested whether adding leflunomide to stable methotrexate therapy was better than adding placebo in patients with rheumatoid arthritis that wasn't well controlled. After 24 weeks, 46% of patients on the combination met the standard response threshold compared to only 20% on methotrexate plus placebo. The combination was generally well tolerated, supporting its use with appropriate monitoring.

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A woman with 35 years of progressive muscle weakness was found to carry a single mutated copy of the CPT2 gene, which normally helps muscles burn fat for fuel. Her father and son had the same mutation, but with widely different severity of symptoms across three generations. The findings show that even one abnormal copy of this gene can cause muscle disease, and that other genetic factors likely influence how severe that disease becomes.

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A woman taking methotrexate (a common arthritis drug) for five years developed abnormal lymph node swelling that initially shrank when the drug was stopped, but later came back and turned out to be Hodgkin's lymphoma, a type of blood cancer. This case shows that methotrexate can trigger lymph node problems that may look like they're going away but can actually transform into real cancer. Doctors need to keep monitoring patients who take this drug long-term, even if their swollen lymph nodes seem to improve, because cancer can develop silently without causing symptoms.

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A patient being treated for bladder cancer with BCG therapy developed joint inflammation in multiple joints and swollen toes resembling a type of arthritis called spondyloarthropathy. Lab tests showed abnormal levels of inflammatory signals, particularly elevated IL-6. This is one of a small number of reported cases where BCG treatment triggers this specific pattern of arthritis.

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This technical paper describes how to set up a cell-based version of the standard ELISA antibody test to measure proteins on the surface of joint lining cells. The method uses intact cells in a standard 96-well plate, making it cheaper and more scalable than flow cytometry. The authors identified several variables — including cell number, fixation method, and plate type — that need to be controlled carefully to get reliable results.

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Twenty-five adults with rheumatoid arthritis completed a 12-week low-impact aerobic exercise program and were tracked for another three weeks afterward. Participants who exercised more frequently had less fatigue, while those who exercised less frequently felt more fatigued over time. Across the group, aerobic fitness, grip strength, and pain all improved without any worsening of joint inflammation.

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When contents released from mast cells were added to blood vessel lining cells in the lab, they dramatically increased production of the inflammatory protein IL-6 in response to bacterial toxin. The mast cell contents were absorbed into the vessel cells and stayed intact for at least 24 hours. Proteins in the mast cell contents were responsible for the effect, pointing to a mechanism by which mast cells could amplify inflammation in blood vessel disease.

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Blood IL-6 levels were measured in 267 rheumatoid arthritis patients in a drug trial comparing placebo, naproxen, and an experimental drug called prinomide. IL-6 was elevated in 80% of patients at the start, but none of the three treatments significantly reduced it. Only prinomide lowered standard inflammation markers like CRP and ESR, suggesting IL-6 behaves differently from those markers and may not respond to common anti-inflammatory drugs.

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Blood levels of a circulating form of ICAM-1, a protein involved in immune cell trafficking, were significantly higher in rheumatoid arthritis patients than in people with other types of arthritis. Interestingly, levels in joint fluid were lower than in blood, suggesting the protein doesn't originate from the joint itself. Elevated circulating ICAM-1 likely reflects the broad systemic inflammation driven by cytokines in rheumatoid arthritis.

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Lab experiments showed that several inflammatory proteins can increase the display of ICAM-1, a cell-surface docking molecule, on joint lining cells, with IL-1 and TNF being the most potent. This increase allowed immune cells from the blood to stick more strongly to the joint lining cells. The finding suggests a way that inflammatory signals cause more immune cells to accumulate in arthritic joints.

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This study tested how different inflammatory proteins affect the production of ICAM-1 on the surface of joint lining cells. IL-1 beta was the most potent driver, followed by TNF-alpha and interferon-gamma, with IL-6 having the weakest effect. By boosting ICAM-1, these proteins can make joint lining cells more attractive to circulating immune cells, potentially worsening joint inflammation.

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MRI was compared to CT scanning for detecting sacroiliitis, an inflammation of the joints connecting the spine to the pelvis. MRI found sacroiliitis in 20% more joints than CT did, particularly by showing cartilage damage and erosions that CT missed. MRI is a more sensitive tool for diagnosing this condition, especially when other imaging results are inconclusive.

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Joint lining cells stimulated with inflammatory proteins were treated with three common anti-inflammatory drugs at doses ranging from very low to normal therapeutic levels. At low, sub-therapeutic doses, all three drugs actually increased the production of prostaglandin E2, a key inflammatory molecule, rather than reducing it. This paradoxical increase at low doses may help explain why arthritis symptoms sometimes flare when patients stop taking these medications.

Plain English
A patient with rheumatoid arthritis developed a dangerously low blood cell count just three weeks after starting low-dose methotrexate. She had mild kidney impairment and low blood protein levels before starting the drug, both of which raise the risk of methotrexate toxicity. Her bone marrow recovered within three weeks, but the case highlights the need for early blood monitoring in patients with risk factors for methotrexate toxicity.

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A young woman with Takayasu arteritis, a rare disease that inflames and narrows major arteries, presented with vision problems and strokes due to blockages in arteries feeding the brain. Despite aggressive treatment with high-dose steroids and chemotherapy, she developed severe eye pain after a stroke and ultimately died of infection. Autopsy found widespread artery blockage with little remaining active inflammation, showing how advanced the damage had become.

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Rats with experimentally induced arthritis were given whole-body radiation of immune tissues at different time points after being given collagen to trigger the disease. Radiation given early (day 9) slowed the development of joint erosions and temporarily reduced antibody levels, while radiation given later (day 21) had no effect. By four months, both irradiated groups looked the same as untreated controls, indicating the benefit was temporary.

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Two women were found to have painful lumps near the breastbone and collarbone joints, which turned out to be the first sign of ankylosing spondylitis, a form of inflammatory spinal arthritis. This is an uncommon initial presentation of the disease, and it was initially considered to be a tumor or infection. The report expands awareness that inflammatory arthritis can first appear as masses near joints rather than back pain.

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Rats given collagen injections to trigger inflammatory arthritis were tracked with serial X-rays to document how joint damage progresses. Joint swelling appeared within two weeks, and erosions and bone inflammation developed by week three, then stabilized by week six. This work established serial X-ray as a useful method for following disease progression and testing treatments in this animal model.

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Radiotracer bone scans of the sacroiliac joints were performed in 14 patients with active lupus, and elevated uptake was found in most of them. When the lupus became less active, the abnormal scan findings returned to normal in most patients. These findings suggest sacroiliac joint involvement is a real but underrecognized feature of active lupus.

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Rabbits infected with a human strain of the African sleeping sickness parasite developed kidney inflammation resembling immune complex glomerulonephritis. The kidneys showed a buildup of immune proteins and an accumulation of monocytes — immune cells that migrate from the blood — in the kidney's filtering units. This points to an active role for these immune cells in driving kidney damage during the infection.

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Tomographic X-rays of the sacroiliac joints were reviewed in 18 patients to see whether this technique added useful information beyond standard X-rays and other imaging. It detected erosions and sclerosis in six cases that standard X-rays had missed, and it ruled out sacroiliitis in ten cases where other tests had suggested it might be present. Despite its usefulness, the high radiation dose means it should be reserved for difficult diagnostic cases.

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The immune suppressor cells that normally dial back excessive immune responses were found to be defective in patients with very early rheumatoid arthritis, but were normal in patients with established or inactive disease. Antibodies directed against these suppressor cells were also found only in the early active group. These findings suggest that faulty immune regulation helps trigger rheumatoid arthritis at its onset, even if it is not responsible for keeping the disease going.

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Sera from lupus patients in remission were found to contain antibodies that could block other lupus antibodies from binding to DNA, a hallmark of the disease. These blocking antibodies were not found in active lupus or in healthy people without lupus exposure, and they acted specifically against anti-DNA antibodies rather than other immune targets. Anti-antibodies that form during remission may play a role in suppressing disease activity in lupus.

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One hundred sets of hand X-rays taken in a special angled view were reviewed to test whether this technique was better than standard views for detecting rheumatoid arthritis. The cortical blurring pattern that the angled view is known for was seen in 81% of rheumatoid patients, but it also appeared in other types of arthritis, making it nonspecific. True erosions were more specific for inflammatory arthritis but could usually be spotted on standard X-rays too.

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Rabbits infected with the African sleeping sickness parasite were monitored for circulating immune complexes and antibody responses over four weeks. Immune complexes appeared by day 10 and grew over time, containing antibodies against the parasite along with complement proteins. The results show that the immune response to the parasite generates immune complexes that could deposit in tissues and cause organ damage.

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Five strains of inbred rats were infected with the African sleeping sickness parasite to see how genetic background influences kidney disease severity. The BUF strain developed the worst kidney inflammation and also had the highest levels of IgM antibodies against the parasite. The findings show that host genetics strongly influence how severe parasite-driven kidney disease becomes.

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New Zealand White rabbits infected with the African sleeping sickness parasite developed widespread tissue damage over 30-44 days, including blood vessel inflammation, kidney disease with immune protein deposits, and enlarged lymph nodes and spleen. Electron microscopy found the parasites living outside blood vessels in the skin and testes. The pattern of damage resembles an immune-driven response rather than direct tissue invasion by the parasite.

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Rats infected with a human strain of the African sleeping sickness parasite developed mild kidney inflammation with deposits of immune proteins and antibodies to DNA within three weeks. Complement levels dropped, indicating immune system activation, and both the classical and alternative pathways were involved. The study established rats as a practical model for studying the kidney and immune effects of African trypanosomiasis.