Articles tagged with Cell Pathology
Scientists have identified a critical genetic mechanism driving cardiac fibrosis and found a novel target for its reversal. The discovery sheds light on the role of transforming growth factor-beta (TGFβ) and ATP-citrate lyase (ACLY) in promoting excessive tissue scarring, providing hope for new heart failure treatments.
Researchers discuss the critical role of the retinal pigmented epithelium in human vision and its susceptibility to aging. The study highlights the importance of understanding molecular and cellular mechanisms driving age-related pathological changes in vision decline.
A new AI-powered approach identifies a distinct subset of endometrial cancer with poorer survival rates, but would otherwise go unrecognized. The discovery will help doctors identify patients at high risk of recurrence and death, enabling more comprehensive treatment.
A platform called Open-ST enables scientists to reconstruct gene expression in cells within a tissue in three dimensions, capturing molecular and (sub)cellular structures. The platform was used to study cell types at subcellular resolution in tissues from mice brains, tumor tissue, and healthy lymph nodes, providing insights into cance...
The 2022 WHO classification of kidney epithelial tumors introduces significant updates to renal tumor pathology, incorporating both morphological and molecular criteria. Key changes include the reorganization of established tumors and the introduction of a new category for molecularly defined tumors.
A new study found that nearly five percent of pancreatic adenocarcinoma patients achieve a pathological complete response (pCR) after treatment, leading to a 63% 5-year survival rate. The research highlights the importance of tailoring treatment based on factors such as chemotherapy regimens and radiation therapy.
The Association for Molecular Pathology has published guidelines for tumor mutational burden (TMB) testing, aiming to standardize calculation and reporting of TMB as a predictive biomarker for immune checkpoint inhibitor therapies. These recommendations emphasize the importance of comprehensive methodological descriptions in publications.
A comprehensive, user-friendly repository has been created to help study Alzheimer's disease. The ssREAD database encompasses 277 integrated datasets from 67 scRNA-seq & snRNA-seq studies, totaling 7,332,202 cells, and includes interactive visualizations for comprehensive analysis interpretations.
A new study using next-generation molecular sequencing and DNA methylation profile analysis identified a rare type of pediatric brain tumor with specific genetic alterations. The tumors were found to be clinically aggressive but some responded well to chemotherapy, highlighting the need for personalized treatment strategies.
Researchers developed Tripath to analyze 3D tissue samples, predicting clinical outcomes based on 3D morphological features. This approach outperformed traditional methods, providing promising potential for guiding critical treatment decisions.
Scientists have found an effective treatment for spitting cobra snakebites by blocking one of the major dermonecrosis-causing toxins with varespladib. The study suggests that this repurposed drug can prevent tissue damage and may become a valuable treatment against black-necked and red spitting cobra venoms.
Researchers at Weill Cornell Medicine have discovered a way to boost protective effects of sphingolipids in blood vessels, slowing the development and progression of coronary artery disease. The study suggests revising current views on ceramides' role in the disease, instead finding that their levels remain stable in endothelial cells.
A recent study revealed that phosphoinositide 3-kinase (PI3K) has a built-in brake mechanism that impedes cell migration, while also acting as an accelerator to prompt motility. The brake mechanism is specific to the p85β subunit and can be disrupted, leading to uncontrolled cell movement.
Researchers have identified CAR-T cell therapy as a potential treatment for autoimmune diseases such as rheumatoid arthritis, SLE, and type 1 Diabetes Mellitus. Early studies have shown promising results in reducing disease activity and improving patients' quality of life, but long-term data on safety and efficacy is limited.
A new study developed two machine learning models to quantify CD8+ cell positivity and classify the immunophenotype of cancer specimens in patients with non-small cell lung cancer. The models hold promise for identifying patients who may benefit from immunotherapy.
Researchers at the University of Geneva have successfully visualized and reconstructed the assembly of the human centriole, a critical structure in the cell skeleton. By combining high-resolution microscopy and kinematic reconstruction techniques, they were able to model the first 4D assembly of the centriole, providing new insights in...
Stanford researchers develop non-invasive 'virtual biopsy' using lasers and AI to create cell-by-cell reconstructions of skin or other tissue. The method mimics standard biopsies but provides rapid results and more information.
New findings in The American Journal of Pathology indicate that periostin promotes esophageal squamous cell carcinoma progression by enhancing cancer and stromal cell migration in cancer-associated fibroblasts. Periostin may be a promising therapeutic target for treating ESCC.
Two anti-inflammatory molecules, TGFβ1 and HpTGM, reduce the inflammatory response within the injured heart and scarring. Treatment with these proteins at the time of reperfusion reduces infarct size and mature scar size.
A new study published in Thyroid found that individuals with low-risk differentiated thyroid cancer (DTC) in the US experience lower mortality rates compared to the general population. The most common causes of death were malignancies and cardiovascular disease.
A new open-top light-sheet microscope with swept illumination enhances the technique for nondestructive 3D pathology. The improved design quadruples the field of view and doubles optical sectioning ability, making it suitable for analyzing complex tissue structures.
New data show that adding pembrolizumab to chemotherapy before and after surgery for breast cancer leads to better outcomes, with significant increases in pathological complete response rates across all age groups. The study also found similar rates of breast-conserving surgery and mastectomy, as well as lower residual cancer burdens.
Researchers have identified a potential therapeutic target for Borjeson-Forssman-Lehman Syndrome, a neurodevelopmental disorder characterized by seizures and intellectual disability. The study found that PHF6 gene mutations impair Ephrin receptor regulation, leading to neural stem cell misregulation.
Researchers have made progress in understanding atherosclerosis, identifying potential new approaches for early detection and therapy. The study found that TREM2 regulates the activity of macrophages, playing an important role in forming unstable plaques that increase heart attack and stroke risk.
The T2oFu method offers a new approach to quantitative phase and polarization-sensitive tomography, enabling high-contrast images of muscle fibers with implications for diagnosing skeletal myopathies. The technique has been successfully tested on heart tissue samples with cardiac amyloidosis, providing promising results.
Researchers at San Diego Zoo Wildlife Alliance have made a groundbreaking discovery that establishes individual baseline values for African elephant blood cell counts, enabling earlier detection and intervention of clinical EEHV infection. This study provides a tool for elephant care facilities to improve preventive medicine and lifesa...
Researchers decode underlying mechanisms of DCM, hippocampal neurotoxicity, and dysbiosis mediated AD progression using mass spectrometry imaging. The studies found metabolic changes in DCM rat hearts and regulation of CYPs in the hippocampus, providing new perspectives on treatment strategies.
Researchers found significantly higher levels of IL-18 expression in osteoarthritis patients and cells compared to healthy controls. IL-17 promoted IL-18 production through the MEK/ERK/miR-4492 axis, indicating potential therapeutic targets for OA treatment.
Researchers develop epigenetic clocks based on regional disorder of DNA methylation patterns, identifying common responses and critical differences from canonical clocks. These findings suggest a fundamental decoupling of epigenetic aging processes.
Researchers discovered that microRNA-29 can restore normal skin structure rather than producing a scar, promoting faster and more efficient wound healing. The release of microRNA-29 targets, particularly LAMC2, is crucial in this process, suggesting a potential new approach for treating large-area or deep wounds.
A new study funded by NIHR has led to the UK government approving digital pathology for cancer screening samples. This technology enables faster reporting and improved care for patients with bowel, breast, lung, and cervical cancers. The use of digital pathology will help reduce risk of sample loss or damage and allow pathologists to r...
Researchers found that the complement system remains activated in Long Covid patients, causing cell damage and tissue destruction. This abnormal activity can lead to thromboinflammation and other symptoms of the condition.
Researchers developed a novel test that detects single ⍺-synuclein fibrils in patient samples to identify patients with Parkinson's disease earlier. This breakthrough has the potential to create early applicable molecular diagnostics, improve clinical trials, and facilitate drug screening for neurodegenerative diseases.
Cancer immunotherapy can cause severe colitis due to hyper-activated immune T cells and deleted regulatory T cells. Researchers at Michigan Medicine have identified a new mouse model that develops colitis after treatment with antibodies used for tumor immunotherapy, revealing the mechanism behind this side effect.
A pioneering study published in The American Journal of Pathology reveals the cytoprotective and proregenerative effects of neuropeptide α-MSH in promoting corneal healing after eye injury. The treatment has shown impressive therapeutic potential in reducing the need for corneal transplants.
Researchers identified key proteins involved in the process, including mTOR and TSC2, which can be targeted to slow or halt disease progression. The study's findings suggest new therapeutic strategies to save dopaminergic neurons and alleviate motor and cognitive symptoms.
A novel study has implicated granulocyte colony-stimulating factor (G-CSF) in both bronchopulmonary dysplasia and retinopathy of prematurity, making it a promising therapeutic candidate. G-CSF deficiency was shown to protect against these diseases, suggesting wide-ranging protection.
A review article links pesticide exposure to an increased risk of developing Parkinson's disease through alterations in the gut microbiota. The authors recommend reducing or replacing agrochemicals and implementing coordinated efforts to develop standardized biomarkers for gut integrity and microbiome changes.
A study published in Nature Communications sheds light on the critical role of P4-ATPases, particularly ATP8B1-CDC50A, in maintaining lipid asymmetry in cell membranes. The research team used cryo-electron microscopy to determine the structure and function of the human flippase complex, revealing its regulation by phosphoinositides.
Researchers have discovered a root cause of Barth syndrome, a deadly metabolic illness, by analyzing faulty cardiolipin molecules and their interaction with cytochrome c. The study used solid-state NMR technology to demonstrate the structural changes that lead to toxic oxidation in mitochondrial membranes.
Researchers found that higher alcohol consumption is associated with biological age acceleration and hypertension in middle-aged and older adults, but not in young adults. The study suggests that alcohol consumption may mediate the association between alcohol intake and quantitative traits like hypertension.
A recent study found that transient inflammatory pain causes persistent mitochondrial and metabolic disturbances in sensory neurons, leading to failure in pain resolution. Targeting the cellular redox balance prevents and treats chronic inflammatory pain in rodents.
Yabing Chen has received two NIH grants totaling over $5 million to investigate vascular diseases and their link to dementia. Her research focuses on Runx2, a master transcription factor involved in both bone formation and calcification of arteries.
Researchers from Universitatsklinikum Bonn have found that a loss of the structural protein ACTL7B blocks spermatogenesis in male mice, leading to infertility. The study suggests that mutations in the Actl7b gene could be a cause of male infertility in humans.
Researchers mapped gene switches and brain cell types associated with various neuropsychiatric disorders, including schizophrenia and bipolar disorder. The study also developed AI tools to predict the influence of individual high-risk gene variants on disease.
Researchers identified abnormal keratin expression patterns in senescent ocular surface cells, which may contribute to severe ocular surface diseases. Gene expression profiles showed substantial differences between senescent and non-senescent cells, highlighting their potential role in pathology.
Five lung stem cell variants dominate CF lungs, causing inflammation, fibrosis, and mucin secretion. CFTR modulators fail to suppress these inflammatory variants, suggesting they as key targets for new drugs.
A new clinical and research partnership has created an AI model that can predict whether cancerous tissue has been fully removed from the body during breast cancer surgery. The model performed as well as humans in identifying positive margins, especially in patients with higher breast density.
An international team has decoded the TSPO protein to visualize neuroinflammation, revealing its relationship with microglial cells. The study's findings pave the way for optimizing observation of neuroinflammatory processes and re-reading previous studies.
A new study led by Dr. Armen Saghatelyan uncovered the migratory mechanisms of neuronal cells in a neurodevelopmental disorder. The team found that modulating autophagy with FDA-approved drug metformin restored the cells' migratory properties.
Researchers highlight microvascular contributions to white matter injury in Alzheimer's disease, sparking calls for exploration of connections between AD, WM injury and cerebral small vessel disease. The study emphasizes the critical need to define mechanisms and diagnostic features of mixed vascular and AD neuropathological change.
Researchers found that pregnant mice experiencing copy number variation (CNV) showed similarities to aging, with biomarkers and genetic effects appearing during pregnancy and reversing after delivery. This study aims to revolutionize aging treatment by investigating the mechanisms behind post-labor rejuvenation.
Researchers developed a new model of hereditary Alzheimer's disease in marmosets by introducing mutations into the PSEN1 gene, which causes early-onset disease in humans. The study aims to characterize and validate genetic, molecular, functional, and cognitive features of aging and Alzheimer's disease in these animals.
Researchers discovered that aging alters the pancreas's circadian rhythm by reorganizing its transcriptome. The study found that fibroblasts play a crucial role in regulating this reorganization, which affects the organ's resilience to aging-related pathologies.
The editorial discusses epigenetic mechanisms leading to oocyte quality loss, a significant factor in age-related fertility decline. Researchers highlight the importance of understanding this process to address the growing issue of advanced maternal age and its impact on reproduction.
Researchers found that a healthy diet from an early age can suppress senescence and loss of fitness in yeast, even late in life. The study proposes an alternative to calorie restriction for improving healthy ageing through dietary change.
A new study found that catheter ablation significantly lowers the incidence of cardiovascular events and death in very old patients with nonvalvular atrial fibrillation. The researchers compared 208 patients who underwent AF ablation with those who received medical therapy only, finding a lower risk of both cardiovascular events and de...
Imperial researchers have imaged Piezo1 channels in human cells and organs, revealing their role in regulating blood pressure, respiration, bladder control, and the immune system. This breakthrough could lead to a better understanding of their role in fundamental physiological processes and potentially new drug targets for diseases.
Researchers have identified a neoplastic fusion transcript RAD51AP1-DYRK4 in luminal B breast cancer, associated with higher ki67 expression and aggressive clinical characteristics. MEK inhibitor trametinib may be effective in blocking the MEK-ERK signaling driven by this fusion.
Researchers studied over 800 clinical assays on renal tumors with MiTF family genes TFE3 and TFEB. The findings show significant age differences between patients with TFEB amplification and those with TFE3 or TFEB translocation, with TFEB amplification being associated with poorer prognosis.