Casing the joint
Researchers have created a new animal model for rheumatoid arthritis that closely mimics the human disease. The KRN-CTM model exhibits chronic inflammation and cartilage damage similar to human cases.
American Journal of Pathology
Tips from the American Journal of Pathology
Researchers found that transforming growth factor-β1 contributes to kidney disease by inducing fibrosis and nephron degeneration. Meanwhile, a new diagnostic criteria for T-cell lymphoma was discovered using mast cells and Th17 cells. Additionally, a novel peptide ASARM may implicate in impaired dentin mineralization in rickets.
Morphine blocks tumor growth
Researchers found that chronic morphine use decreases levels of tumor angiogenesis, mediated by suppression of signaling induced by low oxygen concentrations. This effect suggests morphine may inhibit tumor growth and serve as an anti-angiogenic agent in cancer pain management.
Wining and dining your way to better eyesight
Researchers found resveratrol inhibits pathogenic new blood vessel growth, a central role in various cancers and eye disease. The compound may offer a novel therapeutic strategy to treat these diseases.
New diagnostic test for bladder cancer
Researchers have developed a novel assay to test for multiple tumor markers in bladder cancer using custom-designed MLPA with multiple short synthetic probes. The study found paired tumor and urine samples showed identical marker patterns, suggesting this assay may be used for non-invasive diagnosis.
Tips from the American Journal of Pathology
Researchers have made significant discoveries in the fields of atherosclerosis and Alzheimer's disease, revealing new insights into the role of neutrophils and hyperploidy. A study found that neutrophils contribute to atherosclerosis, while another discovered that hyperploid neurons are more prone to cell death in Alzheimer's disease.
Tips from the American Journal of Pathology
Researchers found that inflammasome activation increases muscle damage in muscular dystrophy, while galectin-7 expression levels are associated with metastasis in breast cancer. These findings provide new insights into disease mechanisms and potential therapeutic targets.
When helper cells aren't helpful
A new study suggests that T helper cells, previously thought to mediate autoimmunity, actually suppress the development of experimental immune encephalomyelitis in mice. The findings indicate that these cells can inhibit the growth of Th17 cells, which are believed to be responsible for causing multiple sclerosis.
Rapid prenatal test for alpha-thalassemia
Researchers at Mahidol University have created a rapid prenatal test for diagnosing alpha-thalassemia. The new assay boasts high sensitivity and specificity, as well as a decreased risk of contamination, making it suitable for large-scale screening in Southeast Asia.
Tips from the American Journal of Pathology
Intestinal ischemia/reperfusion damages the intestine's lining, allowing bacteria to enter the bloodstream. Caveolin-1 modulates endothelial nitric oxide synthase activity to regulate innate immunity. Development of intestinal lymphoid follicles relies on dendritic cell recruitment.
Self-help -- tumors promote their own metastasis
Researchers found that tumor-secreted exosomes increase myeloid-derived suppressor cells, inhibiting immune activation and accelerating tumor metastasis. The study identified the role of MyD88 in this process, suggesting potential strategies to develop immune-stimulating tumor vaccines.
Tips from the American Journal of Pathology
A preclinical model of human prostate cancer mimics primary tumors' genetic behavior, offering a platform for biomarker and drug discovery. High expression levels of delta-like ligand 4 in breast cancer predict poor prognosis.
Personalized medicine in warfarin therapy
Researchers at Ohio State University have developed a rapid and accurate method to genotype single nucleotide polymorphisms (SNPs) that affect warfarin dose, enabling personalized treatment for patients. This new approach has the potential to improve patient outcomes and reduce adverse effects associated with warfarin therapy.
Treating neonatal meningitis -- is nitric oxide a foe or a friend to bacteria?
A recent study suggests that nitric oxide synthase inhibition may be a promising approach to treating neonatal meningitis caused by Escherichia coli K1. The research found that inhibiting inducible nitric oxide synthase enhanced phagocytosis of the bacteria, reducing pathogen load and brain damage.
Tips from the American Journal of Pathology
Researchers found that toxin Paton-Valentine leukocidin does not affect MRSA-induced pneumonia. A novel inhibitor of tumor angiogenesis was discovered in the metalloprotease ADAMTS9. Additionally, Kallikrein-related peptidase 4 (KLK4) may activate protease-activated receptors promoting colon cancer development.
Of swine, birds and men -- pandemic H1N1 flu
The pandemic H1N1 influenza virus replicates efficiently in lung cells and infects conjunctiva, suggesting a potential route of transmission; however, it does not induce cytokine dysregulation like highly pathogenic avian flu viruses.
Double trouble: Bacterial super-infection after the flu
A new study suggests that flu can increase susceptibility to secondary bacterial super-infections, which can lead to high mortality rates. The research found a lethal synergy between the influenza virus and Haemophilus influenzae, mediated by innate immunity, and highlights the need for early antiviral and antibiotic treatment.
Tips from the American Journal of Pathology
Researchers have discovered that environmental cues can lead to breast cancer, while Wnt signaling plays a key role in a rare skin disease. Additionally, chronic morphine use has been found to delay wound healing due to immunosuppression and impaired immune cell recruitment.
Tips from the American Journal of Pathology
A study by Dr. Gregory A. Elder found that presenilin-1 plays a role in the vascular pathology associated with Alzheimer disease, while another study discovered that osteopontin contributes to allergic contact dermatitis. Weakened Plasmodium parasites also elicit a protective immune response.
The cancer 'TRAP'
Researchers found TRAP-1 to be highly expressed in prostate cancer cells, inhibiting cell death, while Gamitrinib treatment killed cancer cells but not healthy ones. This suggests targeting TRAP-1 may provide a new approach for treating advanced prostate cancer.
Rapid flu testing
Researchers at Medical College of Wisconsin develop rapid semi- and fully-automated multiplex real-time RT-PCR assays for detecting human H1N1, H3N2, and swine-origin H1N1 viruses. The tests can distinguish between influenza A, B, and RSV infections, reducing technician and assay time.
Tips from the American Journal of Pathology
Researchers discovered a link between Wnt signaling pathway activation and diabetic retinopathy. Pro-NGF may play a pathogenic role in Alzheimer disease through oxidative stress-induced modifications. Abnormal endothelial cells contribute to tumor progression and metastasis in cancer.
Factors from common human bacteria may trigger multiple sclerosis
Researchers found that common human bacteria, specifically Porphyromas gingivalis, produce unique lipids that can enhance inflammatory responses and exacerbate autoimmune diseases like multiple sclerosis. These lipids may serve as new markers of MS disease activity and targets for therapeutic intervention.
Tips from the American Journal of Pathology
Research from the American Journal of Pathology reveals that glycosaminoglycans contribute to skeletal abnormalities in patients with lysosomal storage diseases. Additionally, αvβ3-integrin expression improves ovarian cancer patient prognosis, while CpG DNA may be a therapeutic candidate for Alzheimer's disease treatment.
Classifying molar pregnancy
Classifying molar pregnancy is crucial for clinical treatment due to increased risk of persistent gestational trophoblastic disease. Researchers used STR genotyping and p57 immunohistochemistry to differentiate complete hydatidiform moles from partial moles and non-molar specimens.
The bowels of infection
Researchers found that latent CMV infection exacerbated intestinal inflammation and increased immune responses to normally harmless bacteria, contributing to IBD severity. Latent CMV infection may modulate mucosal immunity and predispose individuals to developing severe acute colitis and subsequently IBD.
Diabetes weakens your bones
Research suggests that diabetes accelerates bone loss and impairs fracture healing due to increased levels of inflammatory molecules like TNF-α. This can lead to delayed bone fracture healing and an increased risk of fractures in diabetics.
Tips from the American Journal of Pathology
Researchers found that SPAK silencing may promote cancer progression in B-cell lymphomas by crippling genotoxic stress signaling. In contrast, macrophage migration contributes to impaired peritoneal fluid drainage and lymphatic dysfunction in the diaphragm. Additionally, urokine plasminogen activator (uPA) is instrumental in the early ...
Predicting cancer prognosis
Researchers developed a novel methodology to extract microRNAs from cancer tissues, identifying 17 new and 53 known miRNAs. These miRNAs were well-preserved in long-preserved tissue samples, leading to improved predictions of disease prognosis and treatment response.
Tips from the American Journal of Pathology
Researchers have identified new targets for treating breast cancer metastasis by inhibiting Brk protein expression. Additionally, a study on Wnk1 revealed its critical role in angiogenesis and heart development. Furthermore, drug abuse has been found to worsen HIV-associated neurocognitive disorders through dopamine signaling.
Bird flu leaves the nest -- adapting to a new host
Researchers found that viral polymerase is a key target for preventing systemic flu in humans. The study discovered that avian influenza adapted to infect mice caused severe illness and death due to suppression of the immune system.
Tips from the American Journal of Pathology
Researchers at Keio University found that matrix metalloproteinases improve wound healing in mice, while a complement inhibitor FUT-175 delays autoimmune disease onset. Additionally, a new target for tumor angiogenesis inhibition and bone morphogenic protein-7 (BMP-7) have been identified as potential therapies for liver high blood pre...
The 'see food' diet
A diet high in omega-3 fatty acids has been found to protect against a variety of diseases, including age-related macular degeneration. The study suggests that a diet enriched in EPA and DHA can ameliorate the progression of retinal lesions in a mouse model of AMD.
Tummy troubles -- gastrin key in bacterial-induced stomach cancer
A recent study suggests that gastrin is an essential cofactor for Helicobacter-associated gastric corpus carcinogenesis in mice. High levels of gastrin lead to the development of stomach cancer, while absence of gastrin increases tumor numbers in the gastric antrum.
Tips from the American Journal of Pathology
Scientists have made significant discoveries in the fight against muscular dystrophy, identifying a potential gene therapy approach to overexpress Galgt2 protein. In another breakthrough, researchers have identified a stromal marker for breast cancer progression, highlighting the importance of examining stroma PDGF receptor expression ...
Measuring intellectual disability
Researchers have developed a specific and quantitative method to measure FMRP protein levels, which is mutated in fragile X syndrome. This test will help correlate protein levels with clinical severity of the disease.
TB -- hiding in plain sight
Researchers found that Mycobacterium tuberculosis evades the immune response by promoting regulatory T cells, which suppress the host response. This compartmentalization leads to chronic disease rather than complete eradication of the infection.
Tips from the American Journal of Pathology
Two studies in the American Journal of Pathology demonstrate stromal caveolin-1 as a prognostic marker for breast cancer progression, correlating with reduced metastasis levels. Additionally, researchers have identified novel biomarkers for chronic kidney disease progression, predicting progressive renal fibrosis and glomerular filtrat...
Cystic fibrosis testing -- next steps
Genetic screening for cystic fibrosis carrier mutations is universally recommended for the reproductive-age population. New reference materials have been developed to ensure accuracy in genetic testing, but some mutations may lead to false results due to large deletions or interference with laboratory methods.
New mediator of smoking recruits
Researchers found high osteopontin levels in patients with interstitial lung disease and healthy smokers, while healthy non-smokers produced no osteopontin. Osteopontin expression could be stimulated by nicotine treatment, leading to immune cell recruitment and symptoms similar to smoking-related lung diseases.
Tips from the American Journal of Pathology
Notch1 contributes to lung fibrosis by increasing myofibroblasts, while SOCS-1 inhibits prostate cancer growth. TIP30 prevents lung cancer metastasis, and SPARC accelerates kidney disease progression. These findings highlight potential new therapeutic targets.
Stopping autoimmunity before it strikes
Researchers track autoimmune disease development with bioluminescent imaging of NF-κB activation, revealing pathology in multiple organ systems. Early detection is critical for assessing new treatments and preventing disease progression.
Tips from the American Journal of Pathology
Researchers at the University of Tokyo identified a novel biomarker to monitor acute kidney injury, while a study found that the unfolded protein response contributes to nerve cell death in Alzheimer's Disease. Additionally, a bacterial toxin disrupts intestinal epithelial barrier function, leading to systemic infection.
Lowering your cholesterol may decrease your risk of cancer
Research suggests that lowering cholesterol levels can block the growth of prostate tumors and reduce cancer incidence. Ezetimibe, a cholesterol-lowering drug, has been shown to inhibit tumor angiogenesis, promoting less aggressive tumors.
Tips from the American Journal of Pathology
Researchers found that HAART contributes to pulmonary hypertension in HIV-infected patients by impairing blood vessel-lining endothelial cell function. A novel treatment for chronic hypoxic pulmonary hypertension (PHTN) involves neprilysin, which protects against PHTN by regulating neural signaling molecules.
New technique for cancer screening
Researchers have developed a new technique to determine tumor methylation status in archived tissue samples, providing a potential biomarker for early cancer diagnosis and risk assessment. The technique uses high-resolution melting analysis and has been validated on archival and fresh tissues.
Tips from the American Journal of Pathology
Two studies identified a novel biomarker for metastatic bladder cancer and discovered stem cell factor's role in airway remodeling in asthma. Additionally, researchers found that Staphlococcus aureus beta-toxin causes lung injury in pneumonia, while rosiglitazone may reduce the severity of scleroderma.
Inflammation worsens danger due to atherosclerosis
Research found that inflammation weakens collagen caps in atherosclerotic plaques, making them more prone to rupture. The study identifies lysyl-oxidase as a potential target for preventing plaque rupture and thrombosis.
Inflammation contributes to colon cancer
Researchers found that mice lacking Smad3 are acutely sensitive to bacterially-induced inflammation and cancer. Chronic inflammation stimulates cancer development.
Potential therapy for congenital muscular dystrophy
Researchers found that laminin-111 restored regenerative capacity in a mouse model for alpha 7 integrin congenital myopathy. The protein promotes muscle cell health and survival by interacting with the extracellular matrix.